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diff --git a/vendor/dapphp/securimage/.gitattributes b/vendor/dapphp/securimage/.gitattributes new file mode 100644 index 0000000..c3c14a0 --- /dev/null +++ b/vendor/dapphp/securimage/.gitattributes @@ -0,0 +1,5 @@ +/examples/ export-ignore +/captcha.html export-ignore +/config.inc.php.SAMPLE export-ignore +/example_form.ajax.php export-ignore +/example_form.php export-ignore diff --git a/vendor/dapphp/securimage/AHGBold.ttf b/vendor/dapphp/securimage/AHGBold.ttf Binary files differnew file mode 100644 index 0000000..764b23d --- /dev/null +++ b/vendor/dapphp/securimage/AHGBold.ttf diff --git a/vendor/dapphp/securimage/LICENSE.txt b/vendor/dapphp/securimage/LICENSE.txt new file mode 100644 index 0000000..889bc2c --- /dev/null +++ b/vendor/dapphp/securimage/LICENSE.txt @@ -0,0 +1,25 @@ +COPYRIGHT: + Copyright (c) 2011 Drew Phillips + All rights reserved. + + Redistribution and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + - Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + - Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + POSSIBILITY OF SUCH DAMAGE. + diff --git a/vendor/dapphp/securimage/README.FONT.txt b/vendor/dapphp/securimage/README.FONT.txt new file mode 100644 index 0000000..d4770de --- /dev/null +++ b/vendor/dapphp/securimage/README.FONT.txt @@ -0,0 +1,12 @@ +AHGBold.ttf is used by Securimage under the following license: + +Alte Haas Grotesk is a typeface that look like an helvetica printed in an old Muller-Brockmann Book. + +These fonts are freeware and can be distributed as long as they are +together with this text file. + +I would appreciate very much to see what you have done with it anyway. + +yann le coroller +www.yannlecoroller.com +yann@lecoroller.com
\ No newline at end of file diff --git a/vendor/dapphp/securimage/README.md b/vendor/dapphp/securimage/README.md new file mode 100644 index 0000000..e935ea2 --- /dev/null +++ b/vendor/dapphp/securimage/README.md @@ -0,0 +1,244 @@ +## Name: + +**Securimage** - A PHP class for creating captcha images and audio with many options. + +## Version: + +**3.6.6** + +## Author: + +Drew Phillips <drew@drew-phillips.com> + +## Download: + +The latest version can always be found at [phpcaptcha.org](https://www.phpcaptcha.org) + +## Documentation: + +Online documentation of the class, methods, and variables can be found +at http://www.phpcaptcha.org/Securimage_Docs/ + +## Requirements: + +* PHP 5.2 or greater +* GD 2.0 +* FreeType (Required, for TTF fonts) +* PDO (if using Sqlite, MySQL, or PostgreSQL) + +## Synopsis: + +**Within your HTML form** + + <form method="post" action=""> + .. form elements + + <div> + <?php + require_once 'securimage.php'; + echo Securimage::getCaptchaHtml(); + ?> + </div> + </form> + + +**Within your PHP form processor** + + require_once 'securimage.php'; + + // Code Validation + + $image = new Securimage(); + if ($image->check($_POST['captcha_code']) == true) { + echo "Correct!"; + } else { + echo "Sorry, wrong code."; + } + +## Description: + +What is **Securimage**? + +Securimage is a PHP class that is used to generate and validate CAPTCHA images. + +The classes uses an existing PHP session or creates its own if none is found to +store the CAPTCHA code. In addition, a database can be used instead of +session storage. + +Variables within the class are used to control the style and display of the +image. The class uses TTF fonts and effects for strengthening the security of +the image. + +It also creates audible codes which are played for visually impared users. + +## UPGRADE NOTICE: + +**3.6.3 and below:** +Securimage 3.6.4 fixed a XSS vulnerability in example_form.ajax.php. It is +recommended to upgrade to the latest version or delete example_form.ajax.php +from the securimage directory on your website. + +**3.6.2 and above:** + +If you are upgrading to 3.6.2 or greater *AND* are using database storage, +the table structure has changed in 3.6.2 adding an audio_data column for +storing audio files in the database in order to support HTTP range +requests. Delete your tables and have Securimage recreate them or see +the function createDatabaseTables() in securimage.php for the new structure +depending on which database backend you are using and alter the tables as +needed. If using SQLite, just overwrite your existing securimage.sq3 file +with the one from this release. + +*If you are not using database tables for storage, ignore this notice.* + +## Copyright: +Script + Copyright (c) 2016 Drew Phillips + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + - Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + - Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + POSSIBILITY OF SUCH DAMAGE. + +## Licenses: + +**WavFile.php** + + The WavFile.php class used in Securimage by Drew Phillips and Paul Voegler + is used under the BSD License. See WavFile.php for details. + Many thanks to Paul Voegler (http://www.voegler.eu/) for contributing to + Securimage. +Script +--------------------------------------------------------------------------- + +**Flash code for Securimage** + +Flash code created by Age Bosma & Mario Romero (animario@hotmail.com) +Many thanks for releasing this to the project! + +--------------------------------------------------------------------------- + +**HKCaptcha** + +Portions of Securimage contain code from Han-Kwang Nienhuys' PHP captcha + + Han-Kwang Nienhuys' PHP captcha + Copyright June 2007 + + This copyright message and attribution must be preserved upon + modification. Redistribution under other licenses is expressly allowed. + Other licenses include GPL 2 or higher, BSD, and non-free licenses. + The original, unrestricted version can be obtained from + http://www.lagom.nl/linux/hkcaptcha/ + +--------------------------------------------------------------------------- + +**AHGBold.ttf** + + AHGBold.ttf (AlteHaasGroteskBold.ttf) font was created by Yann Le Coroller + and is distributed as freeware. + + Alte Haas Grotesk is a typeface that look like an helvetica printed in an + old Muller-Brockmann Book. + + These fonts are freeware and can be distributed as long as they are + together with this text file. + + I would appreciate very much to see what you have done with it anyway. + + yann le coroller + www.yannlecoroller.com + yann@lecoroller.com + +--------------------------------------------------------------------------- + +**PopForge Flash Library** + +Portions of securimage_play.swf use the PopForge flash library for playing audio + + /** + * Copyright(C) 2007 Andre Michelle and Joa Ebert + * + * PopForge is an ActionScript3 code sandbox developed by Andre Michelle + * and Joa Ebert + * http://sandbox.popforge.de + * + * PopforgeAS3Audio is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * PopforgeAS3Audio is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/> + */ + +-------------------------------------------------------------------------- + +**Graphics** + +Some graphics used are from the Humility Icon Pack by WorLord + + License: GNU/GPL (http://findicons.com/pack/1723/humility) + http://findicons.com/icon/192558/gnome_volume_control + http://findicons.com/icon/192562/gtk_refresh + +-------------------------------------------------------------------------- + + +**Background noise sound files are from SoundJay.com** + +http://www.soundjay.com/tos.html + + All sound effects on this website are created by us and protected under + the copyright laws, international treaty provisions and other applicable + laws. By downloading sounds, music or any material from this site implies + that you have read and accepted these terms and conditions: + + Sound Effects + You are allowed to use the sounds free of charge and royalty free in your + projects (such as films, videos, games, presentations, animations, stage + plays, radio plays, audio books, apps) be it for commercial or + non-commercial purposes. + + But you are NOT allowed to + - post the sounds (as sound effects or ringtones) on any website for + others to download, copy or use + - use them as a raw material to create sound effects or ringtones that + you will sell, distribute or offer for downloading + - sell, re-sell, license or re-license the sounds (as individual sound + effects or as a sound effects library) to anyone else + - claim the sounds as yours + - link directly to individual sound files + - distribute the sounds in apps or computer programs that are clearly + sound related in nature (such as sound machine, sound effect + generator, ringtone maker, funny sounds app, sound therapy app, etc.) + or in apps or computer programs that use the sounds as the program's + sound resource library for other people's use (such as animation + creator, digital book creator, song maker software, etc.). If you are + developing such computer programs, contact us for licensing options. + + If you use the sound effects, please consider giving us a credit and + linking back to us but it's not required. + diff --git a/vendor/dapphp/securimage/README.txt b/vendor/dapphp/securimage/README.txt new file mode 100644 index 0000000..57898cd --- /dev/null +++ b/vendor/dapphp/securimage/README.txt @@ -0,0 +1,222 @@ +NAME: + + Securimage - A PHP class for creating captcha images and audio with many options. + +VERSION: + + 3.6.6 + +AUTHOR: + + Drew Phillips <drew@drew-phillips.com> + +DOWNLOAD: + + The latest version can always be + found at http://www.phpcaptcha.org + +DOCUMENTATION: + + Online documentation of the class, methods, and variables can + be found at http://www.phpcaptcha.org/Securimage_Docs/ + +REQUIREMENTS: + + PHP 5.2 or greater + GD 2.0 + FreeType (Required, for TTF fonts) + PDO (if using Sqlite, MySQL, or PostgreSQL) + +SYNOPSIS: + + require_once 'securimage.php'; + + **Within your HTML form** + + <form method="post" action=""> + .. form elements + + <div> + <?php echo Securimage::getCaptchaHtml() ?> + </div> + </form> + + + **Within your PHP form processor** + + // Code Validation + + $image = new Securimage(); + if ($image->check($_POST['captcha_code']) == true) { + echo "Correct!"; + } else { + echo "Sorry, wrong code."; + } + +DESCRIPTION: + + What is Securimage? + + Securimage is a PHP class that is used to generate and validate CAPTCHA + images. + + The classes uses an existing PHP session or creates its own if + none is found to store the CAPTCHA code. In addition, a database can be + used instead of session storage. + + Variables within the class are used to control the style and display of + the image. The class uses TTF fonts and effects for strengthening the + security of the image. + + It also creates audible codes which are played for visually impared users. + +UPGRADE NOTICE: + 3.6.3 and below: + Securimage 3.6.4 fixed a XSS vulnerability in example_form.ajax.php. It is + recommended to upgrade to the latest version or delete example_form.ajax.php + from the securimage directory on your website. + + 3.6.2 and above: + If you are upgrading to 3.6.2 or greater AND are using database storage, + the table structure has changed in 3.6.2 adding an audio_data column for + storing audio files in the database in order to support HTTP range + requests. Delete your tables and have Securimage recreate them or see + the function createDatabaseTables() in securimage.php for the new structure + depending on which database backend you are using and alter the tables as + needed. If using SQLite, just overwrite your existing securimage.sq3 file + with the one from this release. + + If you are not using database tables for storage, ignore this notice. + +COPYRIGHT: + + Copyright (c) 2016 Drew Phillips + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + - Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + - Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + POSSIBILITY OF SUCH DAMAGE. + +LICENSES: + + The WavFile.php class used in Securimage by Drew Phillips and Paul Voegler + is used under the BSD License. See WavFile.php for details. + Many thanks to Paul Voegler (http://www.voegler.eu/) for contributing to + Securimage. + + --------------------------------------------------------------------------- + Flash code created by Age Bosma & Mario Romero (animario@hotmail.com) + Many thanks for releasing this to the project! + + --------------------------------------------------------------------------- + Portions of Securimage contain code from Han-Kwang Nienhuys' PHP captcha + + Han-Kwang Nienhuys' PHP captcha + Copyright June 2007 + + This copyright message and attribution must be preserved upon + modification. Redistribution under other licenses is expressly allowed. + Other licenses include GPL 2 or higher, BSD, and non-free licenses. + The original, unrestricted version can be obtained from + http://www.lagom.nl/linux/hkcaptcha/ + + --------------------------------------------------------------------------- + AHGBold.ttf (AlteHaasGroteskBold.ttf) font was created by Yann Le Coroller + and is distributed as freeware. + + Alte Haas Grotesk is a typeface that look like an helvetica printed in an + old Muller-Brockmann Book. + + These fonts are freeware and can be distributed as long as they are + together with this text file. + + I would appreciate very much to see what you have done with it anyway. + + yann le coroller + www.yannlecoroller.com + yann@lecoroller.com + + --------------------------------------------------------------------------- + Portions of securimage_play.swf use the PopForge flash library for + playing audio + + /** + * Copyright(C) 2007 Andre Michelle and Joa Ebert + * + * PopForge is an ActionScript3 code sandbox developed by Andre Michelle + * and Joa Ebert + * http://sandbox.popforge.de + * + * PopforgeAS3Audio is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * PopforgeAS3Audio is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/> + */ + + -------------------------------------------------------------------------- + Some graphics used are from the Humility Icon Pack by WorLord + + License: GNU/GPL (http://findicons.com/pack/1723/humility) + http://findicons.com/icon/192558/gnome_volume_control + http://findicons.com/icon/192562/gtk_refresh + + -------------------------------------------------------------------------- + Background noise sound files are from SoundJay.com + http://www.soundjay.com/tos.html + + All sound effects on this website are created by us and protected under + the copyright laws, international treaty provisions and other applicable + laws. By downloading sounds, music or any material from this site implies + that you have read and accepted these terms and conditions: + + Sound Effects + You are allowed to use the sounds free of charge and royalty free in your + projects (such as films, videos, games, presentations, animations, stage + plays, radio plays, audio books, apps) be it for commercial or + non-commercial purposes. + + But you are NOT allowed to + - post the sounds (as sound effects or ringtones) on any website for + others to download, copy or use + - use them as a raw material to create sound effects or ringtones that + you will sell, distribute or offer for downloading + - sell, re-sell, license or re-license the sounds (as individual sound + effects or as a sound effects library) to anyone else + - claim the sounds as yours + - link directly to individual sound files + - distribute the sounds in apps or computer programs that are clearly + sound related in nature (such as sound machine, sound effect + generator, ringtone maker, funny sounds app, sound therapy app, etc.) + or in apps or computer programs that use the sounds as the program's + sound resource library for other people's use (such as animation + creator, digital book creator, song maker software, etc.). If you are + developing such computer programs, contact us for licensing options. + + If you use the sound effects, please consider giving us a credit and + linking back to us but it's not required. + diff --git a/vendor/dapphp/securimage/WavFile.php b/vendor/dapphp/securimage/WavFile.php new file mode 100644 index 0000000..8702d22 --- /dev/null +++ b/vendor/dapphp/securimage/WavFile.php @@ -0,0 +1,1913 @@ +<?php + +// error_reporting(E_ALL); ini_set('display_errors', 1); // uncomment this line for debugging + +/** +* Project: PHPWavUtils: Classes for creating, reading, and manipulating WAV files in PHP<br /> +* File: WavFile.php<br /> +* +* Copyright (c) 2014, Drew Phillips +* All rights reserved. +* +* Redistribution and use in source and binary forms, with or without modification, +* are permitted provided that the following conditions are met: +* +* - Redistributions of source code must retain the above copyright notice, +* this list of conditions and the following disclaimer. +* - Redistributions in binary form must reproduce the above copyright notice, +* this list of conditions and the following disclaimer in the documentation +* and/or other materials provided with the distribution. +* +* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE +* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +* POSSIBILITY OF SUCH DAMAGE. +* +* Any modifications to the library should be indicated clearly in the source code +* to inform users that the changes are not a part of the original software.<br /><br /> +* +* @copyright 2014 Drew Phillips +* @author Drew Phillips <drew@drew-phillips.com> +* @author Paul Voegler <http://www.voegler.eu/> +* @version 1.1.1 (Sep 2015) +* @package PHPWavUtils +* @license BSD License +* +* Changelog: +* 1.1.1 (09/08/2015) +* - Fix degrade() method to call filter correctly (Rasmus Lerdorf) +* +* 1.1 (02/8/2014) +* - Add method setIgnoreChunkSizes() to allow reading of wav data with bogus chunk sizes set. +* This allows streamed wav data to be processed where the chunk sizes were not known when +* writing the header. Instead calculates the chunk sizes automatically. +* - Add simple volume filter to attenuate or amplify the audio signal. +* +* 1.0 (10/2/2012) +* - Fix insertSilence() creating invalid block size +* +* 1.0 RC1 (4/20/2012) +* - Initial release candidate +* - Supports 8, 16, 24, 32 bit PCM, 32-bit IEEE FLOAT, Extensible Format +* - Support for 18 channels of audio +* - Ability to read an offset from a file to reduce memory footprint with large files +* - Single-pass audio filter processing +* - Highly accurate and efficient mix and normalization filters (http://www.voegler.eu/pub/audio/) +* - Utility filters for degrading audio, and inserting silence +* +* 0.6 (4/12/2012) +* - Support 8, 16, 24, 32 bit and PCM float (Paul Voegler) +* - Add normalize filter, misc improvements and fixes (Paul Voegler) +* - Normalize parameters to filter() to use filter constants as array indices +* - Add option to mix filter to loop the target file if the source is longer +* +* 0.5 (4/3/2012) +* - Fix binary pack routine (Paul Voegler) +* - Add improved mixing function (Paul Voegler) +* +*/ + +class WavFile +{ + /*%******************************************************************************************%*/ + // Class constants + + /** @var int Filter flag for mixing two files */ + const FILTER_MIX = 0x01; + + /** @var int Filter flag for normalizing audio data */ + const FILTER_NORMALIZE = 0x02; + + /** @var int Filter flag for degrading audio data */ + const FILTER_DEGRADE = 0x04; + + /** @var int Filter flag for amplifying or attenuating audio data. */ + const FILTER_VOLUME = 0x08; + + /** @var int Maximum number of channels */ + const MAX_CHANNEL = 18; + + /** @var int Maximum sample rate */ + const MAX_SAMPLERATE = 192000; + + /** Channel Locations for ChannelMask */ + const SPEAKER_DEFAULT = 0x000000; + const SPEAKER_FRONT_LEFT = 0x000001; + const SPEAKER_FRONT_RIGHT = 0x000002; + const SPEAKER_FRONT_CENTER = 0x000004; + const SPEAKER_LOW_FREQUENCY = 0x000008; + const SPEAKER_BACK_LEFT = 0x000010; + const SPEAKER_BACK_RIGHT = 0x000020; + const SPEAKER_FRONT_LEFT_OF_CENTER = 0x000040; + const SPEAKER_FRONT_RIGHT_OF_CENTER = 0x000080; + const SPEAKER_BACK_CENTER = 0x000100; + const SPEAKER_SIDE_LEFT = 0x000200; + const SPEAKER_SIDE_RIGHT = 0x000400; + const SPEAKER_TOP_CENTER = 0x000800; + const SPEAKER_TOP_FRONT_LEFT = 0x001000; + const SPEAKER_TOP_FRONT_CENTER = 0x002000; + const SPEAKER_TOP_FRONT_RIGHT = 0x004000; + const SPEAKER_TOP_BACK_LEFT = 0x008000; + const SPEAKER_TOP_BACK_CENTER = 0x010000; + const SPEAKER_TOP_BACK_RIGHT = 0x020000; + const SPEAKER_ALL = 0x03FFFF; + + /** @var int PCM Audio Format */ + const WAVE_FORMAT_PCM = 0x0001; + + /** @var int IEEE FLOAT Audio Format */ + const WAVE_FORMAT_IEEE_FLOAT = 0x0003; + + /** @var int EXTENSIBLE Audio Format - actual audio format defined by SubFormat */ + const WAVE_FORMAT_EXTENSIBLE = 0xFFFE; + + /** @var string PCM Audio Format SubType - LE hex representation of GUID {00000001-0000-0010-8000-00AA00389B71} */ + const WAVE_SUBFORMAT_PCM = "0100000000001000800000aa00389b71"; + + /** @var string IEEE FLOAT Audio Format SubType - LE hex representation of GUID {00000003-0000-0010-8000-00AA00389B71} */ + const WAVE_SUBFORMAT_IEEE_FLOAT = "0300000000001000800000aa00389b71"; + + + /*%******************************************************************************************%*/ + // Properties + + /** @var array Log base modifier lookup table for a given threshold (in 0.05 steps) used by normalizeSample. + * Adjusts the slope (1st derivative) of the log function at the threshold to 1 for a smooth transition + * from linear to logarithmic amplitude output. */ + protected static $LOOKUP_LOGBASE = array( + 2.513, 2.667, 2.841, 3.038, 3.262, + 3.520, 3.819, 4.171, 4.589, 5.093, + 5.711, 6.487, 7.483, 8.806, 10.634, + 13.302, 17.510, 24.970, 41.155, 96.088 + ); + + /** @var int The actual physical file size */ + protected $_actualSize; + + /** @var int The size of the file in RIFF header */ + protected $_chunkSize; + + /** @var int The size of the "fmt " chunk */ + protected $_fmtChunkSize; + + /** @var int The size of the extended "fmt " data */ + protected $_fmtExtendedSize; + + /** @var int The size of the "fact" chunk */ + protected $_factChunkSize; + + /** @var int Size of the data chunk */ + protected $_dataSize; + + /** @var int Size of the data chunk in the opened wav file */ + protected $_dataSize_fp; + + /** @var bool Does _dataSize really reflect strlen($_samples)? Case when a wav file is read with readData = false */ + protected $_dataSize_valid; + + /** @var int Starting offset of data chunk */ + protected $_dataOffset; + + /** @var int The audio format - WavFile::WAVE_FORMAT_* */ + protected $_audioFormat; + + /** @var int|string|null The audio subformat - WavFile::WAVE_SUBFORMAT_* */ + protected $_audioSubFormat; + + /** @var int Number of channels in the audio file */ + protected $_numChannels; + + /** @var int The channel mask */ + protected $_channelMask; + + /** @var int Samples per second */ + protected $_sampleRate; + + /** @var int Number of bits per sample */ + protected $_bitsPerSample; + + /** @var int Number of valid bits per sample */ + protected $_validBitsPerSample; + + /** @var int NumChannels * BitsPerSample/8 */ + protected $_blockAlign; + + /** @var int Number of sample blocks */ + protected $_numBlocks; + + /** @var int Bytes per second */ + protected $_byteRate; + + /** @var bool Ignore chunk sizes when reading wav data (useful when reading data from a stream where chunk sizes contain dummy values) */ + protected $_ignoreChunkSizes; + + /** @var string Binary string of samples */ + protected $_samples; + + /** @var resource|null The file pointer used for reading wavs from file or memory */ + protected $_fp; + + + /*%******************************************************************************************%*/ + // Special methods + + /** + * WavFile Constructor. + * + * <code> + * $wav1 = new WavFile(2, 44100, 16); // new wav with 2 channels, at 44100 samples/sec and 16 bits per sample + * $wav2 = new WavFile('./audio/sound.wav'); // open and read wav file + * </code> + * + * @param string|int $numChannelsOrFileName (Optional) If string, the filename of the wav file to open. The number of channels otherwise. Defaults to 1. + * @param int|bool $sampleRateOrReadData (Optional) If opening a file and boolean, decides whether to read the data chunk or not. Defaults to true. The sample rate in samples per second otherwise. 8000 = standard telephone, 16000 = wideband telephone, 32000 = FM radio and 44100 = CD quality. Defaults to 8000. + * @param int $bitsPerSample (Optional) The number of bits per sample. Has to be 8, 16 or 24 for PCM audio or 32 for IEEE FLOAT audio. 8 = telephone, 16 = CD and 24 or 32 = studio quality. Defaults to 8. + * @throws WavFormatException + * @throws WavFileException + */ + public function __construct($numChannelsOrFileName = null, $sampleRateOrReadData = null, $bitsPerSample = null) + { + $this->_actualSize = 44; + $this->_chunkSize = 36; + $this->_fmtChunkSize = 16; + $this->_fmtExtendedSize = 0; + $this->_factChunkSize = 0; + $this->_dataSize = 0; + $this->_dataSize_fp = 0; + $this->_dataSize_valid = true; + $this->_dataOffset = 44; + $this->_audioFormat = self::WAVE_FORMAT_PCM; + $this->_audioSubFormat = null; + $this->_numChannels = 1; + $this->_channelMask = self::SPEAKER_DEFAULT; + $this->_sampleRate = 8000; + $this->_bitsPerSample = 8; + $this->_validBitsPerSample = 8; + $this->_blockAlign = 1; + $this->_numBlocks = 0; + $this->_byteRate = 8000; + $this->_ignoreChunkSizes = false; + $this->_samples = ''; + $this->_fp = null; + + + if (is_string($numChannelsOrFileName)) { + $this->openWav($numChannelsOrFileName, is_bool($sampleRateOrReadData) ? $sampleRateOrReadData : true); + + } else { + $this->setNumChannels(is_null($numChannelsOrFileName) ? 1 : $numChannelsOrFileName) + ->setSampleRate(is_null($sampleRateOrReadData) ? 8000 : $sampleRateOrReadData) + ->setBitsPerSample(is_null($bitsPerSample) ? 8 : $bitsPerSample); + } + } + + public function __destruct() { + if (is_resource($this->_fp)) $this->closeWav(); + } + + public function __clone() { + $this->_fp = null; + } + + /** + * Output the wav file headers and data. + * + * @return string The encoded file. + */ + public function __toString() + { + return $this->makeHeader() . + $this->getDataSubchunk(); + } + + + /*%******************************************************************************************%*/ + // Static methods + + /** + * Unpacks a single binary sample to numeric value. + * + * @param string $sampleBinary (Required) The sample to decode. + * @param int $bitDepth (Optional) The bits per sample to decode. If omitted, derives it from the length of $sampleBinary. + * @return int|float|null The numeric sample value. Float for 32-bit samples. Returns null for unsupported bit depths. + */ + public static function unpackSample($sampleBinary, $bitDepth = null) + { + if ($bitDepth === null) { + $bitDepth = strlen($sampleBinary) * 8; + } + + switch ($bitDepth) { + case 8: + // unsigned char + return ord($sampleBinary); + + case 16: + // signed short, little endian + $data = unpack('v', $sampleBinary); + $sample = $data[1]; + if ($sample >= 0x8000) { + $sample -= 0x10000; + } + return $sample; + + case 24: + // 3 byte packed signed integer, little endian + $data = unpack('C3', $sampleBinary); + $sample = $data[1] | ($data[2] << 8) | ($data[3] << 16); + if ($sample >= 0x800000) { + $sample -= 0x1000000; + } + return $sample; + + case 32: + // 32-bit float + $data = unpack('f', $sampleBinary); + return $data[1]; + + default: + return null; + } + } + + /** + * Packs a single numeric sample to binary. + * + * @param int|float $sample (Required) The sample to encode. Has to be within valid range for $bitDepth. Float values only for 32 bits. + * @param int $bitDepth (Required) The bits per sample to encode with. + * @return string|null The encoded binary sample. Returns null for unsupported bit depths. + */ + public static function packSample($sample, $bitDepth) + { + switch ($bitDepth) { + case 8: + // unsigned char + return chr($sample); + + case 16: + // signed short, little endian + if ($sample < 0) { + $sample += 0x10000; + } + return pack('v', $sample); + + case 24: + // 3 byte packed signed integer, little endian + if ($sample < 0) { + $sample += 0x1000000; + } + return pack('C3', $sample & 0xff, ($sample >> 8) & 0xff, ($sample >> 16) & 0xff); + + case 32: + // 32-bit float + return pack('f', $sample); + + default: + return null; + } + } + + /** + * Unpacks a binary sample block to numeric values. + * + * @param string $sampleBlock (Required) The binary sample block (all channels). + * @param int $bitDepth (Required) The bits per sample to decode. + * @param int $numChannels (Optional) The number of channels to decode. If omitted, derives it from the length of $sampleBlock and $bitDepth. + * @return array The sample values as an array of integers of floats for 32 bits. First channel is array index 1. + */ + public static function unpackSampleBlock($sampleBlock, $bitDepth, $numChannels = null) { + $sampleBytes = $bitDepth / 8; + if ($numChannels === null) { + $numChannels = strlen($sampleBlock) / $sampleBytes; + } + + $samples = array(); + for ($i = 0; $i < $numChannels; $i++) { + $sampleBinary = substr($sampleBlock, $i * $sampleBytes, $sampleBytes); + $samples[$i + 1] = self::unpackSample($sampleBinary, $bitDepth); + } + + return $samples; + } + + /** + * Packs an array of numeric channel samples to a binary sample block. + * + * @param array $samples (Required) The array of channel sample values. Expects float values for 32 bits and integer otherwise. + * @param int $bitDepth (Required) The bits per sample to encode with. + * @return string The encoded binary sample block. + */ + public static function packSampleBlock($samples, $bitDepth) { + $sampleBlock = ''; + foreach($samples as $sample) { + $sampleBlock .= self::packSample($sample, $bitDepth); + } + + return $sampleBlock; + } + + /** + * Normalizes a float audio sample. Maximum input range assumed for compression is [-2, 2]. + * See http://www.voegler.eu/pub/audio/ for more information. + * + * @param float $sampleFloat (Required) The float sample to normalize. + * @param float $threshold (Required) The threshold or gain factor for normalizing the amplitude. <ul> + * <li> >= 1 - Normalize by multiplying by the threshold (boost - positive gain). <br /> + * A value of 1 in effect means no normalization (and results in clipping). </li> + * <li> <= -1 - Normalize by dividing by the the absolute value of threshold (attenuate - negative gain). <br /> + * A factor of 2 (-2) is about 6dB reduction in volume.</li> + * <li> [0, 1) - (open inverval - not including 1) - The threshold + * above which amplitudes are comressed logarithmically. <br /> + * e.g. 0.6 to leave amplitudes up to 60% "as is" and compress above. </li> + * <li> (-1, 0) - (open inverval - not including -1 and 0) - The threshold + * above which amplitudes are comressed linearly. <br /> + * e.g. -0.6 to leave amplitudes up to 60% "as is" and compress above. </li></ul> + * @return float The normalized sample. + **/ + public static function normalizeSample($sampleFloat, $threshold) { + // apply positive gain + if ($threshold >= 1) { + return $sampleFloat * $threshold; + } + + // apply negative gain + if ($threshold <= -1) { + return $sampleFloat / -$threshold; + } + + $sign = $sampleFloat < 0 ? -1 : 1; + $sampleAbs = abs($sampleFloat); + + // logarithmic compression + if ($threshold >= 0 && $threshold < 1 && $sampleAbs > $threshold) { + $loga = self::$LOOKUP_LOGBASE[(int)($threshold * 20)]; // log base modifier + return $sign * ($threshold + (1 - $threshold) * log(1 + $loga * ($sampleAbs - $threshold) / (2 - $threshold)) / log(1 + $loga)); + } + + // linear compression + $thresholdAbs = abs($threshold); + if ($threshold > -1 && $threshold < 0 && $sampleAbs > $thresholdAbs) { + return $sign * ($thresholdAbs + (1 - $thresholdAbs) / (2 - $thresholdAbs) * ($sampleAbs - $thresholdAbs)); + } + + // else ? + return $sampleFloat; + } + + + /*%******************************************************************************************%*/ + // Getter and Setter methods for properties + + public function getActualSize() { + return $this->_actualSize; + } + + /** @param int $actualSize */ + protected function setActualSize($actualSize = null) { + if (is_null($actualSize)) { + $this->_actualSize = 8 + $this->_chunkSize; // + "RIFF" header (ID + size) + } else { + $this->_actualSize = $actualSize; + } + + return $this; + } + + public function getChunkSize() { + return $this->_chunkSize; + } + + /** @param int $chunkSize */ + protected function setChunkSize($chunkSize = null) { + if (is_null($chunkSize)) { + $this->_chunkSize = 4 + // "WAVE" chunk + 8 + $this->_fmtChunkSize + // "fmt " subchunk + ($this->_factChunkSize > 0 ? 8 + $this->_factChunkSize : 0) + // "fact" subchunk + 8 + $this->_dataSize + // "data" subchunk + ($this->_dataSize & 1); // padding byte + } else { + $this->_chunkSize = $chunkSize; + } + + $this->setActualSize(); + + return $this; + } + + public function getFmtChunkSize() { + return $this->_fmtChunkSize; + } + + /** @param int $fmtChunkSize */ + protected function setFmtChunkSize($fmtChunkSize = null) { + if (is_null($fmtChunkSize)) { + $this->_fmtChunkSize = 16 + $this->_fmtExtendedSize; + } else { + $this->_fmtChunkSize = $fmtChunkSize; + } + + $this->setChunkSize() // implicit setActualSize() + ->setDataOffset(); + + return $this; + } + + public function getFmtExtendedSize() { + return $this->_fmtExtendedSize; + } + + /** @param int $fmtExtendedSize */ + protected function setFmtExtendedSize($fmtExtendedSize = null) { + if (is_null($fmtExtendedSize)) { + if ($this->_audioFormat == self::WAVE_FORMAT_EXTENSIBLE) { + $this->_fmtExtendedSize = 2 + 22; // extension size for WAVE_FORMAT_EXTENSIBLE + } elseif ($this->_audioFormat != self::WAVE_FORMAT_PCM) { + $this->_fmtExtendedSize = 2 + 0; // empty extension + } else { + $this->_fmtExtendedSize = 0; // no extension, only for WAVE_FORMAT_PCM + } + } else { + $this->_fmtExtendedSize = $fmtExtendedSize; + } + + $this->setFmtChunkSize(); // implicit setSize(), setActualSize(), setDataOffset() + + return $this; + } + + public function getFactChunkSize() { + return $this->_factChunkSize; + } + + /** @param int $factChunkSize */ + protected function setFactChunkSize($factChunkSize = null) { + if (is_null($factChunkSize)) { + if ($this->_audioFormat != self::WAVE_FORMAT_PCM) { + $this->_factChunkSize = 4; + } else { + $this->_factChunkSize = 0; + } + } else { + $this->_factChunkSize = $factChunkSize; + } + + $this->setChunkSize() // implicit setActualSize() + ->setDataOffset(); + + return $this; + } + + public function getDataSize() { + return $this->_dataSize; + } + + /** @param int $dataSize */ + protected function setDataSize($dataSize = null) { + if (is_null($dataSize)) { + $this->_dataSize = strlen($this->_samples); + } else { + $this->_dataSize = $dataSize; + } + + $this->setChunkSize() // implicit setActualSize() + ->setNumBlocks(); + $this->_dataSize_valid = true; + + return $this; + } + + public function getDataOffset() { + return $this->_dataOffset; + } + + /** @param int $dataOffset */ + protected function setDataOffset($dataOffset = null) { + if (is_null($dataOffset)) { + $this->_dataOffset = 8 + // "RIFF" header (ID + size) + 4 + // "WAVE" chunk + 8 + $this->_fmtChunkSize + // "fmt " subchunk + ($this->_factChunkSize > 0 ? 8 + $this->_factChunkSize : 0) + // "fact" subchunk + 8; // "data" subchunk + } else { + $this->_dataOffset = $dataOffset; + } + + return $this; + } + + public function getAudioFormat() { + return $this->_audioFormat; + } + + /** @param int $audioFormat */ + protected function setAudioFormat($audioFormat = null) { + if (is_null($audioFormat)) { + if (($this->_bitsPerSample <= 16 || $this->_bitsPerSample == 32) + && $this->_validBitsPerSample == $this->_bitsPerSample + && $this->_channelMask == self::SPEAKER_DEFAULT + && $this->_numChannels <= 2) { + if ($this->_bitsPerSample <= 16) { + $this->_audioFormat = self::WAVE_FORMAT_PCM; + } else { + $this->_audioFormat = self::WAVE_FORMAT_IEEE_FLOAT; + } + } else { + $this->_audioFormat = self::WAVE_FORMAT_EXTENSIBLE; + } + } else { + $this->_audioFormat = $audioFormat; + } + + $this->setAudioSubFormat() + ->setFactChunkSize() // implicit setSize(), setActualSize(), setDataOffset() + ->setFmtExtendedSize(); // implicit setFmtChunkSize(), setSize(), setActualSize(), setDataOffset() + + return $this; + } + + public function getAudioSubFormat() { + return $this->_audioSubFormat; + } + + /** @param int $audioSubFormat */ + protected function setAudioSubFormat($audioSubFormat = null) { + if (is_null($audioSubFormat)) { + if ($this->_bitsPerSample == 32) { + $this->_audioSubFormat = self::WAVE_SUBFORMAT_IEEE_FLOAT; // 32 bits are IEEE FLOAT in this class + } else { + $this->_audioSubFormat = self::WAVE_SUBFORMAT_PCM; // 8, 16 and 24 bits are PCM in this class + } + } else { + $this->_audioSubFormat = $audioSubFormat; + } + + return $this; + } + + public function getNumChannels() { + return $this->_numChannels; + } + + /** @param int $numChannels */ + public function setNumChannels($numChannels) { + if ($numChannels < 1 || $numChannels > self::MAX_CHANNEL) { + throw new WavFileException('Unsupported number of channels. Only up to ' . self::MAX_CHANNEL . ' channels are supported.'); + } elseif ($this->_samples !== '') { + trigger_error('Wav already has sample data. Changing the number of channels does not convert and may corrupt the data.', E_USER_NOTICE); + } + + $this->_numChannels = (int)$numChannels; + + $this->setAudioFormat() // implicit setAudioSubFormat(), setFactChunkSize(), setFmtExtendedSize(), setFmtChunkSize(), setSize(), setActualSize(), setDataOffset() + ->setByteRate() + ->setBlockAlign(); // implicit setNumBlocks() + + return $this; + } + + public function getChannelMask() { + return $this->_channelMask; + } + + public function setChannelMask($channelMask = self::SPEAKER_DEFAULT) { + if ($channelMask != 0) { + // count number of set bits - Hamming weight + $c = (int)$channelMask; + $n = 0; + while ($c > 0) { + $n += $c & 1; + $c >>= 1; + } + if ($n != $this->_numChannels || (((int)$channelMask | self::SPEAKER_ALL) != self::SPEAKER_ALL)) { + throw new WavFileException('Invalid channel mask. The number of channels does not match the number of locations in the mask.'); + } + } + + $this->_channelMask = (int)$channelMask; + + $this->setAudioFormat(); // implicit setAudioSubFormat(), setFactChunkSize(), setFmtExtendedSize(), setFmtChunkSize(), setSize(), setActualSize(), setDataOffset() + + return $this; + } + + public function getSampleRate() { + return $this->_sampleRate; + } + + public function setSampleRate($sampleRate) { + if ($sampleRate < 1 || $sampleRate > self::MAX_SAMPLERATE) { + throw new WavFileException('Invalid sample rate.'); + } elseif ($this->_samples !== '') { + trigger_error('Wav already has sample data. Changing the sample rate does not convert the data and may yield undesired results.', E_USER_NOTICE); + } + + $this->_sampleRate = (int)$sampleRate; + + $this->setByteRate(); + + return $this; + } + + public function getBitsPerSample() { + return $this->_bitsPerSample; + } + + public function setBitsPerSample($bitsPerSample) { + if (!in_array($bitsPerSample, array(8, 16, 24, 32))) { + throw new WavFileException('Unsupported bits per sample. Only 8, 16, 24 and 32 bits are supported.'); + } elseif ($this->_samples !== '') { + trigger_error('Wav already has sample data. Changing the bits per sample does not convert and may corrupt the data.', E_USER_NOTICE); + } + + $this->_bitsPerSample = (int)$bitsPerSample; + + $this->setValidBitsPerSample() // implicit setAudioFormat(), setAudioSubFormat(), setFmtChunkSize(), setFactChunkSize(), setSize(), setActualSize(), setDataOffset() + ->setByteRate() + ->setBlockAlign(); // implicit setNumBlocks() + + return $this; + } + + public function getValidBitsPerSample() { + return $this->_validBitsPerSample; + } + + protected function setValidBitsPerSample($validBitsPerSample = null) { + if (is_null($validBitsPerSample)) { + $this->_validBitsPerSample = $this->_bitsPerSample; + } else { + if ($validBitsPerSample < 1 || $validBitsPerSample > $this->_bitsPerSample) { + throw new WavFileException('ValidBitsPerSample cannot be greater than BitsPerSample.'); + } + $this->_validBitsPerSample = (int)$validBitsPerSample; + } + + $this->setAudioFormat(); // implicit setAudioSubFormat(), setFactChunkSize(), setFmtExtendedSize(), setFmtChunkSize(), setSize(), setActualSize(), setDataOffset() + + return $this; + } + + public function getBlockAlign() { + return $this->_blockAlign; + } + + /** @param int $blockAlign */ + protected function setBlockAlign($blockAlign = null) { + if (is_null($blockAlign)) { + $this->_blockAlign = $this->_numChannels * $this->_bitsPerSample / 8; + } else { + $this->_blockAlign = $blockAlign; + } + + $this->setNumBlocks(); + + return $this; + } + + public function getNumBlocks() + { + return $this->_numBlocks; + } + + /** @param int $numBlocks */ + protected function setNumBlocks($numBlocks = null) { + if (is_null($numBlocks)) { + $this->_numBlocks = (int)($this->_dataSize / $this->_blockAlign); // do not count incomplete sample blocks + } else { + $this->_numBlocks = $numBlocks; + } + + return $this; + } + + public function getByteRate() { + return $this->_byteRate; + } + + /** @param int $byteRate */ + protected function setByteRate($byteRate = null) { + if (is_null($byteRate)) { + $this->_byteRate = $this->_sampleRate * $this->_numChannels * $this->_bitsPerSample / 8; + } else { + $this->_byteRate = $byteRate; + } + + return $this; + } + + public function getIgnoreChunkSizes() + { + return $this->_ignoreChunkSizes; + } + + public function setIgnoreChunkSizes($ignoreChunkSizes) + { + $this->_ignoreChunkSizes = (bool)$ignoreChunkSizes; + return $this; + } + + public function getSamples() { + return $this->_samples; + } + + public function setSamples(&$samples = '') { + if (strlen($samples) % $this->_blockAlign != 0) { + throw new WavFileException('Incorrect samples size. Has to be a multiple of BlockAlign.'); + } + + $this->_samples = $samples; + + $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() + + return $this; + } + + + /*%******************************************************************************************%*/ + // Getters + + public function getMinAmplitude() + { + if ($this->_bitsPerSample == 8) { + return 0; + } elseif ($this->_bitsPerSample == 32) { + return -1.0; + } else { + return -(1 << ($this->_bitsPerSample - 1)); + } + } + + public function getZeroAmplitude() + { + if ($this->_bitsPerSample == 8) { + return 0x80; + } elseif ($this->_bitsPerSample == 32) { + return 0.0; + } else { + return 0; + } + } + + public function getMaxAmplitude() + { + if($this->_bitsPerSample == 8) { + return 0xFF; + } elseif($this->_bitsPerSample == 32) { + return 1.0; + } else { + return (1 << ($this->_bitsPerSample - 1)) - 1; + } + } + + + /*%******************************************************************************************%*/ + // Wave file methods + + /** + * Construct a wav header from this object. Includes "fact" chunk if necessary. + * http://www-mmsp.ece.mcgill.ca/documents/audioformats/wave/wave.html + * + * @return string The RIFF header data. + */ + public function makeHeader() + { + // reset and recalculate + $this->setAudioFormat(); // implicit setAudioSubFormat(), setFactChunkSize(), setFmtExtendedSize(), setFmtChunkSize(), setSize(), setActualSize(), setDataOffset() + $this->setNumBlocks(); + + // RIFF header + $header = pack('N', 0x52494646); // ChunkID - "RIFF" + $header .= pack('V', $this->getChunkSize()); // ChunkSize + $header .= pack('N', 0x57415645); // Format - "WAVE" + + // "fmt " subchunk + $header .= pack('N', 0x666d7420); // SubchunkID - "fmt " + $header .= pack('V', $this->getFmtChunkSize()); // SubchunkSize + $header .= pack('v', $this->getAudioFormat()); // AudioFormat + $header .= pack('v', $this->getNumChannels()); // NumChannels + $header .= pack('V', $this->getSampleRate()); // SampleRate + $header .= pack('V', $this->getByteRate()); // ByteRate + $header .= pack('v', $this->getBlockAlign()); // BlockAlign + $header .= pack('v', $this->getBitsPerSample()); // BitsPerSample + if($this->getFmtExtendedSize() == 24) { + $header .= pack('v', 22); // extension size = 24 bytes, cbSize: 24 - 2 = 22 bytes + $header .= pack('v', $this->getValidBitsPerSample()); // ValidBitsPerSample + $header .= pack('V', $this->getChannelMask()); // ChannelMask + $header .= pack('H32', $this->getAudioSubFormat()); // SubFormat + } elseif ($this->getFmtExtendedSize() == 2) { + $header .= pack('v', 0); // extension size = 2 bytes, cbSize: 2 - 2 = 0 bytes + } + + // "fact" subchunk + if ($this->getFactChunkSize() == 4) { + $header .= pack('N', 0x66616374); // SubchunkID - "fact" + $header .= pack('V', 4); // SubchunkSize + $header .= pack('V', $this->getNumBlocks()); // SampleLength (per channel) + } + + return $header; + } + + /** + * Construct wav DATA chunk. + * + * @return string The DATA header and chunk. + */ + public function getDataSubchunk() + { + // check preconditions + if (!$this->_dataSize_valid) { + $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() + } + + + // create subchunk + return pack('N', 0x64617461) . // SubchunkID - "data" + pack('V', $this->getDataSize()) . // SubchunkSize + $this->_samples . // Subchunk data + ($this->getDataSize() & 1 ? chr(0) : ''); // padding byte + } + + /** + * Save the wav data to a file. + * + * @param string $filename (Required) The file path to save the wav to. + * @throws WavFileException + */ + public function save($filename) + { + $fp = @fopen($filename, 'w+b'); + if (!is_resource($fp)) { + throw new WavFileException('Failed to open "' . $filename . '" for writing.'); + } + + fwrite($fp, $this->makeHeader()); + fwrite($fp, $this->getDataSubchunk()); + fclose($fp); + + return $this; + } + + /** + * Reads a wav header and data from a file. + * + * @param string $filename (Required) The path to the wav file to read. + * @param bool $readData (Optional) If true, also read the data chunk. + * @throws WavFormatException + * @throws WavFileException + */ + public function openWav($filename, $readData = true) + { + // check preconditions + if (!file_exists($filename)) { + throw new WavFileException('Failed to open "' . $filename . '". File not found.'); + } elseif (!is_readable($filename)) { + throw new WavFileException('Failed to open "' . $filename . '". File is not readable.'); + } elseif (is_resource($this->_fp)) { + $this->closeWav(); + } + + + // open the file + $this->_fp = @fopen($filename, 'rb'); + if (!is_resource($this->_fp)) { + throw new WavFileException('Failed to open "' . $filename . '".'); + } + + // read the file + return $this->readWav($readData); + } + + /** + * Close a with openWav() previously opened wav file or free the buffer of setWavData(). + * Not necessary if the data has been read (readData = true) already. + */ + public function closeWav() { + if (is_resource($this->_fp)) fclose($this->_fp); + + return $this; + } + + /** + * Set the wav file data and properties from a wav file in a string. + * + * @param string $data (Required) The wav file data. Passed by reference. + * @param bool $free (Optional) True to free the passed $data after copying. + * @throws WavFormatException + * @throws WavFileException + */ + public function setWavData(&$data, $free = true) + { + // check preconditions + if (is_resource($this->_fp)) $this->closeWav(); + + + // open temporary stream in memory + $this->_fp = @fopen('php://memory', 'w+b'); + if (!is_resource($this->_fp)) { + throw new WavFileException('Failed to open memory stream to write wav data. Use openWav() instead.'); + } + + // prepare stream + fwrite($this->_fp, $data); + rewind($this->_fp); + + // free the passed data + if ($free) $data = null; + + // read the stream like a file + return $this->readWav(true); + } + + /** + * Read wav file from a stream. + * + * @param bool $readData (Optional) If true, also read the data chunk. + * @throws WavFormatException + * @throws WavFileException + */ + protected function readWav($readData = true) + { + if (!is_resource($this->_fp)) { + throw new WavFileException('No wav file open. Use openWav() first.'); + } + + try { + $this->readWavHeader(); + } catch (WavFileException $ex) { + $this->closeWav(); + throw $ex; + } + + if ($readData) return $this->readWavData(); + + return $this; + } + + /** + * Parse a wav header. + * http://www-mmsp.ece.mcgill.ca/documents/audioformats/wave/wave.html + * + * @throws WavFormatException + * @throws WavFileException + */ + protected function readWavHeader() + { + if (!is_resource($this->_fp)) { + throw new WavFileException('No wav file open. Use openWav() first.'); + } + + // get actual file size + $stat = fstat($this->_fp); + $actualSize = $stat['size']; + + $this->_actualSize = $actualSize; + + + // read the common header + $header = fread($this->_fp, 36); // minimum size of the wav header + if (strlen($header) < 36) { + throw new WavFormatException('Not wav format. Header too short.', 1); + } + + + // check "RIFF" header + $RIFF = unpack('NChunkID/VChunkSize/NFormat', $header); + + if ($RIFF['ChunkID'] != 0x52494646) { // "RIFF" + throw new WavFormatException('Not wav format. "RIFF" signature missing.', 2); + } + + if ($this->getIgnoreChunkSizes()) { + $RIFF['ChunkSize'] = $actualSize - 8; + } else if ($actualSize - 8 < $RIFF['ChunkSize']) { + trigger_error('"RIFF" chunk size does not match actual file size. Found ' . $RIFF['ChunkSize'] . ', expected ' . ($actualSize - 8) . '.', E_USER_NOTICE); + $RIFF['ChunkSize'] = $actualSize - 8; + } + + if ($RIFF['Format'] != 0x57415645) { // "WAVE" + throw new WavFormatException('Not wav format. "RIFF" chunk format is not "WAVE".', 4); + } + + $this->_chunkSize = $RIFF['ChunkSize']; + + + // check common "fmt " subchunk + $fmt = unpack('NSubchunkID/VSubchunkSize/vAudioFormat/vNumChannels/' + .'VSampleRate/VByteRate/vBlockAlign/vBitsPerSample', + substr($header, 12)); + + if ($fmt['SubchunkID'] != 0x666d7420) { // "fmt " + throw new WavFormatException('Bad wav header. Expected "fmt " subchunk.', 11); + } + + if ($fmt['SubchunkSize'] < 16) { + throw new WavFormatException('Bad "fmt " subchunk size.', 12); + } + + if ( $fmt['AudioFormat'] != self::WAVE_FORMAT_PCM + && $fmt['AudioFormat'] != self::WAVE_FORMAT_IEEE_FLOAT + && $fmt['AudioFormat'] != self::WAVE_FORMAT_EXTENSIBLE) + { + throw new WavFormatException('Unsupported audio format. Only PCM or IEEE FLOAT (EXTENSIBLE) audio is supported.', 13); + } + + if ($fmt['NumChannels'] < 1 || $fmt['NumChannels'] > self::MAX_CHANNEL) { + throw new WavFormatException('Invalid number of channels in "fmt " subchunk.', 14); + } + + if ($fmt['SampleRate'] < 1 || $fmt['SampleRate'] > self::MAX_SAMPLERATE) { + throw new WavFormatException('Invalid sample rate in "fmt " subchunk.', 15); + } + + if ( ($fmt['AudioFormat'] == self::WAVE_FORMAT_PCM && !in_array($fmt['BitsPerSample'], array(8, 16, 24))) + || ($fmt['AudioFormat'] == self::WAVE_FORMAT_IEEE_FLOAT && $fmt['BitsPerSample'] != 32) + || ($fmt['AudioFormat'] == self::WAVE_FORMAT_EXTENSIBLE && !in_array($fmt['BitsPerSample'], array(8, 16, 24, 32)))) + { + throw new WavFormatException('Only 8, 16 and 24-bit PCM and 32-bit IEEE FLOAT (EXTENSIBLE) audio is supported.', 16); + } + + $blockAlign = $fmt['NumChannels'] * $fmt['BitsPerSample'] / 8; + if ($blockAlign != $fmt['BlockAlign']) { + trigger_error('Invalid block align in "fmt " subchunk. Found ' . $fmt['BlockAlign'] . ', expected ' . $blockAlign . '.', E_USER_NOTICE); + $fmt['BlockAlign'] = $blockAlign; + } + + $byteRate = $fmt['SampleRate'] * $blockAlign; + if ($byteRate != $fmt['ByteRate']) { + trigger_error('Invalid average byte rate in "fmt " subchunk. Found ' . $fmt['ByteRate'] . ', expected ' . $byteRate . '.', E_USER_NOTICE); + $fmt['ByteRate'] = $byteRate; + } + + $this->_fmtChunkSize = $fmt['SubchunkSize']; + $this->_audioFormat = $fmt['AudioFormat']; + $this->_numChannels = $fmt['NumChannels']; + $this->_sampleRate = $fmt['SampleRate']; + $this->_byteRate = $fmt['ByteRate']; + $this->_blockAlign = $fmt['BlockAlign']; + $this->_bitsPerSample = $fmt['BitsPerSample']; + + + // read extended "fmt " subchunk data + $extendedFmt = ''; + if ($fmt['SubchunkSize'] > 16) { + // possibly handle malformed subchunk without a padding byte + $extendedFmt = fread($this->_fp, $fmt['SubchunkSize'] - 16 + ($fmt['SubchunkSize'] & 1)); // also read padding byte + if (strlen($extendedFmt) < $fmt['SubchunkSize'] - 16) { + throw new WavFormatException('Not wav format. Header too short.', 1); + } + } + + + // check extended "fmt " for EXTENSIBLE Audio Format + if ($fmt['AudioFormat'] == self::WAVE_FORMAT_EXTENSIBLE) { + if (strlen($extendedFmt) < 24) { + throw new WavFormatException('Invalid EXTENSIBLE "fmt " subchunk size. Found ' . $fmt['SubchunkSize'] . ', expected at least 40.', 19); + } + + $extensibleFmt = unpack('vSize/vValidBitsPerSample/VChannelMask/H32SubFormat', substr($extendedFmt, 0, 24)); + + if ( $extensibleFmt['SubFormat'] != self::WAVE_SUBFORMAT_PCM + && $extensibleFmt['SubFormat'] != self::WAVE_SUBFORMAT_IEEE_FLOAT) + { + throw new WavFormatException('Unsupported audio format. Only PCM or IEEE FLOAT (EXTENSIBLE) audio is supported.', 13); + } + + if ( ($extensibleFmt['SubFormat'] == self::WAVE_SUBFORMAT_PCM && !in_array($fmt['BitsPerSample'], array(8, 16, 24))) + || ($extensibleFmt['SubFormat'] == self::WAVE_SUBFORMAT_IEEE_FLOAT && $fmt['BitsPerSample'] != 32)) + { + throw new WavFormatException('Only 8, 16 and 24-bit PCM and 32-bit IEEE FLOAT (EXTENSIBLE) audio is supported.', 16); + } + + if ($extensibleFmt['Size'] != 22) { + trigger_error('Invaid extension size in EXTENSIBLE "fmt " subchunk.', E_USER_NOTICE); + $extensibleFmt['Size'] = 22; + } + + if ($extensibleFmt['ValidBitsPerSample'] != $fmt['BitsPerSample']) { + trigger_error('Invaid or unsupported valid bits per sample in EXTENSIBLE "fmt " subchunk.', E_USER_NOTICE); + $extensibleFmt['ValidBitsPerSample'] = $fmt['BitsPerSample']; + } + + if ($extensibleFmt['ChannelMask'] != 0) { + // count number of set bits - Hamming weight + $c = (int)$extensibleFmt['ChannelMask']; + $n = 0; + while ($c > 0) { + $n += $c & 1; + $c >>= 1; + } + if ($n != $fmt['NumChannels'] || (((int)$extensibleFmt['ChannelMask'] | self::SPEAKER_ALL) != self::SPEAKER_ALL)) { + trigger_error('Invalid channel mask in EXTENSIBLE "fmt " subchunk. The number of channels does not match the number of locations in the mask.', E_USER_NOTICE); + $extensibleFmt['ChannelMask'] = 0; + } + } + + $this->_fmtExtendedSize = strlen($extendedFmt); + $this->_validBitsPerSample = $extensibleFmt['ValidBitsPerSample']; + $this->_channelMask = $extensibleFmt['ChannelMask']; + $this->_audioSubFormat = $extensibleFmt['SubFormat']; + + } else { + $this->_fmtExtendedSize = strlen($extendedFmt); + $this->_validBitsPerSample = $fmt['BitsPerSample']; + $this->_channelMask = 0; + $this->_audioSubFormat = null; + } + + + // read additional subchunks until "data" subchunk is found + $factSubchunk = array(); + $dataSubchunk = array(); + + while (!feof($this->_fp)) { + $subchunkHeader = fread($this->_fp, 8); + if (strlen($subchunkHeader) < 8) { + throw new WavFormatException('Missing "data" subchunk.', 101); + } + + $subchunk = unpack('NSubchunkID/VSubchunkSize', $subchunkHeader); + + if ($subchunk['SubchunkID'] == 0x66616374) { // "fact" + // possibly handle malformed subchunk without a padding byte + $subchunkData = fread($this->_fp, $subchunk['SubchunkSize'] + ($subchunk['SubchunkSize'] & 1)); // also read padding byte + if (strlen($subchunkData) < 4) { + throw new WavFormatException('Invalid "fact" subchunk.', 102); + } + + $factParams = unpack('VSampleLength', substr($subchunkData, 0, 4)); + $factSubchunk = array_merge($subchunk, $factParams); + + } elseif ($subchunk['SubchunkID'] == 0x64617461) { // "data" + $dataSubchunk = $subchunk; + + break; + + } elseif ($subchunk['SubchunkID'] == 0x7761766C) { // "wavl" + throw new WavFormatException('Wave List Chunk ("wavl" subchunk) is not supported.', 106); + } else { + // skip all other (unknown) subchunks + // possibly handle malformed subchunk without a padding byte + if ( $subchunk['SubchunkSize'] < 0 + || fseek($this->_fp, $subchunk['SubchunkSize'] + ($subchunk['SubchunkSize'] & 1), SEEK_CUR) !== 0) { // also skip padding byte + throw new WavFormatException('Invalid subchunk (0x' . dechex($subchunk['SubchunkID']) . ') encountered.', 103); + } + } + } + + if (empty($dataSubchunk)) { + throw new WavFormatException('Missing "data" subchunk.', 101); + } + + // check "data" subchunk + $dataOffset = ftell($this->_fp); + if ($this->getIgnoreChunkSizes()) { + $dataSubchunk['SubchunkSize'] = $actualSize - $dataOffset; + } elseif ($dataSubchunk['SubchunkSize'] < 0 || $actualSize - $dataOffset < $dataSubchunk['SubchunkSize']) { + trigger_error("Invalid \"data\" subchunk size (found {$dataSubchunk['SubchunkSize']}.", E_USER_NOTICE); + $dataSubchunk['SubchunkSize'] = $actualSize - $dataOffset; + } + + $this->_dataOffset = $dataOffset; + $this->_dataSize = $dataSubchunk['SubchunkSize']; + $this->_dataSize_fp = $dataSubchunk['SubchunkSize']; + $this->_dataSize_valid = false; + $this->_samples = ''; + + + // check "fact" subchunk + $numBlocks = (int)($dataSubchunk['SubchunkSize'] / $fmt['BlockAlign']); + + if (empty($factSubchunk)) { // construct fake "fact" subchunk + $factSubchunk = array('SubchunkSize' => 0, 'SampleLength' => $numBlocks); + } + + if ($factSubchunk['SampleLength'] != $numBlocks) { + trigger_error('Invalid sample length in "fact" subchunk.', E_USER_NOTICE); + $factSubchunk['SampleLength'] = $numBlocks; + } + + $this->_factChunkSize = $factSubchunk['SubchunkSize']; + $this->_numBlocks = $factSubchunk['SampleLength']; + + + return $this; + + } + + /** + * Read the wav data from the file into the buffer. + * + * @param int $dataOffset (Optional) The byte offset to skip before starting to read. Must be a multiple of BlockAlign. + * @param int $dataSize (Optional) The size of the data to read in bytes. Must be a multiple of BlockAlign. Defaults to all data. + * @throws WavFileException + */ + public function readWavData($dataOffset = 0, $dataSize = null) + { + // check preconditions + if (!is_resource($this->_fp)) { + throw new WavFileException('No wav file open. Use openWav() first.'); + } + + if ($dataOffset < 0 || $dataOffset % $this->getBlockAlign() > 0) { + throw new WavFileException('Invalid data offset. Has to be a multiple of BlockAlign.'); + } + + if (is_null($dataSize)) { + $dataSize = $this->_dataSize_fp - ($this->_dataSize_fp % $this->getBlockAlign()); // only read complete blocks + } elseif ($dataSize < 0 || $dataSize % $this->getBlockAlign() > 0) { + throw new WavFileException('Invalid data size to read. Has to be a multiple of BlockAlign.'); + } + + + // skip offset + if ($dataOffset > 0 && fseek($this->_fp, $dataOffset, SEEK_CUR) !== 0) { + throw new WavFileException('Seeking to data offset failed.'); + } + + // read data + $this->_samples .= fread($this->_fp, $dataSize); // allow appending + $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() + + // close file or memory stream + return $this->closeWav(); + } + + + /*%******************************************************************************************%*/ + // Sample manipulation methods + + /** + * Return a single sample block from the file. + * + * @param int $blockNum (Required) The sample block number. Zero based. + * @return string|null The binary sample block (all channels). Returns null if the sample block number was out of range. + */ + public function getSampleBlock($blockNum) + { + // check preconditions + if (!$this->_dataSize_valid) { + $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() + } + + $offset = $blockNum * $this->_blockAlign; + if ($offset + $this->_blockAlign > $this->_dataSize || $offset < 0) { + return null; + } + + + // read data + return substr($this->_samples, $offset, $this->_blockAlign); + } + + /** + * Set a single sample block. <br /> + * Allows to append a sample block. + * + * @param string $sampleBlock (Required) The binary sample block (all channels). + * @param int $blockNum (Required) The sample block number. Zero based. + * @throws WavFileException + */ + public function setSampleBlock($sampleBlock, $blockNum) + { + // check preconditions + $blockAlign = $this->_blockAlign; + if (!isset($sampleBlock[$blockAlign - 1]) || isset($sampleBlock[$blockAlign])) { // faster than: if (strlen($sampleBlock) != $blockAlign) + throw new WavFileException('Incorrect sample block size. Got ' . strlen($sampleBlock) . ', expected ' . $blockAlign . '.'); + } + + if (!$this->_dataSize_valid) { + $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() + } + + $numBlocks = (int)($this->_dataSize / $blockAlign); + $offset = $blockNum * $blockAlign; + if ($blockNum > $numBlocks || $blockNum < 0) { // allow appending + throw new WavFileException('Sample block number is out of range.'); + } + + + // replace or append data + if ($blockNum == $numBlocks) { + // append + $this->_samples .= $sampleBlock; + $this->_dataSize += $blockAlign; + $this->_chunkSize += $blockAlign; + $this->_actualSize += $blockAlign; + $this->_numBlocks++; + } else { + // replace + for ($i = 0; $i < $blockAlign; ++$i) { + $this->_samples[$offset + $i] = $sampleBlock[$i]; + } + } + + return $this; + } + + /** + * Get a float sample value for a specific sample block and channel number. + * + * @param int $blockNum (Required) The sample block number to fetch. Zero based. + * @param int $channelNum (Required) The channel number within the sample block to fetch. First channel is 1. + * @return float|null The float sample value. Returns null if the sample block number was out of range. + * @throws WavFileException + */ + public function getSampleValue($blockNum, $channelNum) + { + // check preconditions + if ($channelNum < 1 || $channelNum > $this->_numChannels) { + throw new WavFileException('Channel number is out of range.'); + } + + if (!$this->_dataSize_valid) { + $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() + } + + $sampleBytes = $this->_bitsPerSample / 8; + $offset = $blockNum * $this->_blockAlign + ($channelNum - 1) * $sampleBytes; + if ($offset + $sampleBytes > $this->_dataSize || $offset < 0) { + return null; + } + + // read binary value + $sampleBinary = substr($this->_samples, $offset, $sampleBytes); + + // convert binary to value + switch ($this->_bitsPerSample) { + case 8: + // unsigned char + return (float)((ord($sampleBinary) - 0x80) / 0x80); + + case 16: + // signed short, little endian + $data = unpack('v', $sampleBinary); + $sample = $data[1]; + if ($sample >= 0x8000) { + $sample -= 0x10000; + } + return (float)($sample / 0x8000); + + case 24: + // 3 byte packed signed integer, little endian + $data = unpack('C3', $sampleBinary); + $sample = $data[1] | ($data[2] << 8) | ($data[3] << 16); + if ($sample >= 0x800000) { + $sample -= 0x1000000; + } + return (float)($sample / 0x800000); + + case 32: + // 32-bit float + $data = unpack('f', $sampleBinary); + return (float)$data[1]; + + default: + return null; + } + } + + /** + * Sets a float sample value for a specific sample block number and channel. <br /> + * Converts float values to appropriate integer values and clips properly. <br /> + * Allows to append samples (in order). + * + * @param float $sampleFloat (Required) The float sample value to set. Converts float values and clips if necessary. + * @param int $blockNum (Required) The sample block number to set or append. Zero based. + * @param int $channelNum (Required) The channel number within the sample block to set or append. First channel is 1. + * @throws WavFileException + */ + public function setSampleValue($sampleFloat, $blockNum, $channelNum) + { + // check preconditions + if ($channelNum < 1 || $channelNum > $this->_numChannels) { + throw new WavFileException('Channel number is out of range.'); + } + + if (!$this->_dataSize_valid) { + $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() + } + + $dataSize = $this->_dataSize; + $bitsPerSample = $this->_bitsPerSample; + $sampleBytes = $bitsPerSample / 8; + $offset = $blockNum * $this->_blockAlign + ($channelNum - 1) * $sampleBytes; + if (($offset + $sampleBytes > $dataSize && $offset != $dataSize) || $offset < 0) { // allow appending + throw new WavFileException('Sample block or channel number is out of range.'); + } + + + // convert to value, quantize and clip + if ($bitsPerSample == 32) { + $sample = $sampleFloat < -1.0 ? -1.0 : ($sampleFloat > 1.0 ? 1.0 : $sampleFloat); + } else { + $p = 1 << ($bitsPerSample - 1); // 2 to the power of _bitsPerSample divided by 2 + + // project and quantize (round) float to integer values + $sample = $sampleFloat < 0 ? (int)($sampleFloat * $p - 0.5) : (int)($sampleFloat * $p + 0.5); + + // clip if necessary to [-$p, $p - 1] + if ($sample < -$p) { + $sample = -$p; + } elseif ($sample > $p - 1) { + $sample = $p - 1; + } + } + + // convert to binary + switch ($bitsPerSample) { + case 8: + // unsigned char + $sampleBinary = chr($sample + 0x80); + break; + + case 16: + // signed short, little endian + if ($sample < 0) { + $sample += 0x10000; + } + $sampleBinary = pack('v', $sample); + break; + + case 24: + // 3 byte packed signed integer, little endian + if ($sample < 0) { + $sample += 0x1000000; + } + $sampleBinary = pack('C3', $sample & 0xff, ($sample >> 8) & 0xff, ($sample >> 16) & 0xff); + break; + + case 32: + // 32-bit float + $sampleBinary = pack('f', $sample); + break; + + default: + $sampleBinary = null; + $sampleBytes = 0; + break; + } + + // replace or append data + if ($offset == $dataSize) { + // append + $this->_samples .= $sampleBinary; + $this->_dataSize += $sampleBytes; + $this->_chunkSize += $sampleBytes; + $this->_actualSize += $sampleBytes; + $this->_numBlocks = (int)($this->_dataSize / $this->_blockAlign); + } else { + // replace + for ($i = 0; $i < $sampleBytes; ++$i) { + $this->_samples{$offset + $i} = $sampleBinary{$i}; + } + } + + return $this; + } + + + /*%******************************************************************************************%*/ + // Audio processing methods + + /** + * Run samples through audio processing filters. + * + * <code> + * $wav->filter( + * array( + * WavFile::FILTER_MIX => array( // Filter for mixing 2 WavFile instances. + * 'wav' => $wav2, // (Required) The WavFile to mix into this WhavFile. If no optional arguments are given, can be passed without the array. + * 'loop' => true, // (Optional) Loop the selected portion (with warping to the beginning at the end). + * 'blockOffset' => 0, // (Optional) Block number to start mixing from. + * 'numBlocks' => null // (Optional) Number of blocks to mix in or to select for looping. Defaults to the end or all data for looping. + * ), + * WavFile::FILTER_NORMALIZE => 0.6, // (Required) Normalization of (mixed) audio samples - see threshold parameter for normalizeSample(). + * WavFile::FILTER_DEGRADE => 0.9 // (Required) Introduce random noise. The quality relative to the amplitude. 1 = no noise, 0 = max. noise. + * WavFile::FILTER_VOLUME => 1.0 // (Required) Amplify or attenuate the audio signal. Beware of clipping when amplifying. Values range from >= 0 - <= 2. 1 = no change in volume; 0.5 = 50% reduction of volume; 1.5 = 150% increase in volume. + * ), + * 0, // (Optional) The block number of this WavFile to start with. + * null // (Optional) The number of blocks to process. + * ); + * </code> + * + * @param array $filters (Required) An array of 1 or more audio processing filters. + * @param int $blockOffset (Optional) The block number to start precessing from. + * @param int $numBlocks (Optional) The maximum number of blocks to process. + * @throws WavFileException + */ + public function filter($filters, $blockOffset = 0, $numBlocks = null) + { + // check preconditions + $totalBlocks = $this->getNumBlocks(); + $numChannels = $this->getNumChannels(); + if (is_null($numBlocks)) $numBlocks = $totalBlocks - $blockOffset; + + if (!is_array($filters) || empty($filters) || $blockOffset < 0 || $blockOffset > $totalBlocks || $numBlocks <= 0) { + // nothing to do + return $this; + } + + // check filtes + $filter_mix = false; + if (array_key_exists(self::FILTER_MIX, $filters)) { + if (!is_array($filters[self::FILTER_MIX])) { + // assume the 'wav' parameter + $filters[self::FILTER_MIX] = array('wav' => $filters[self::FILTER_MIX]); + } + + $mix_wav = @$filters[self::FILTER_MIX]['wav']; + if (!($mix_wav instanceof WavFile)) { + throw new WavFileException("WavFile to mix is missing or invalid."); + } elseif ($mix_wav->getSampleRate() != $this->getSampleRate()) { + throw new WavFileException("Sample rate of WavFile to mix does not match."); + } else if ($mix_wav->getNumChannels() != $this->getNumChannels()) { + throw new WavFileException("Number of channels of WavFile to mix does not match."); + } + + $mix_loop = @$filters[self::FILTER_MIX]['loop']; + if (is_null($mix_loop)) $mix_loop = false; + + $mix_blockOffset = @$filters[self::FILTER_MIX]['blockOffset']; + if (is_null($mix_blockOffset)) $mix_blockOffset = 0; + + $mix_totalBlocks = $mix_wav->getNumBlocks(); + $mix_numBlocks = @$filters[self::FILTER_MIX]['numBlocks']; + if (is_null($mix_numBlocks)) $mix_numBlocks = $mix_loop ? $mix_totalBlocks : $mix_totalBlocks - $mix_blockOffset; + $mix_maxBlock = min($mix_blockOffset + $mix_numBlocks, $mix_totalBlocks); + + $filter_mix = true; + } + + $filter_normalize = false; + if (array_key_exists(self::FILTER_NORMALIZE, $filters)) { + $normalize_threshold = @$filters[self::FILTER_NORMALIZE]; + + if (!is_null($normalize_threshold) && abs($normalize_threshold) != 1) $filter_normalize = true; + } + + $filter_degrade = false; + if (array_key_exists(self::FILTER_DEGRADE, $filters)) { + $degrade_quality = @$filters[self::FILTER_DEGRADE]; + if (is_null($degrade_quality)) $degrade_quality = 1; + + if ($degrade_quality >= 0 && $degrade_quality < 1) $filter_degrade = true; + } + + $filter_vol = false; + if (array_key_exists(self::FILTER_VOLUME, $filters)) { + $volume_amount = @$filters[self::FILTER_VOLUME]; + if (is_null($volume_amount)) $volume_amount = 1; + + if ($volume_amount >= 0 && $volume_amount <= 2 && $volume_amount != 1.0) { + $filter_vol = true; + } + } + + + // loop through all sample blocks + for ($block = 0; $block < $numBlocks; ++$block) { + // loop through all channels + for ($channel = 1; $channel <= $numChannels; ++$channel) { + // read current sample + $currentBlock = $blockOffset + $block; + $sampleFloat = $this->getSampleValue($currentBlock, $channel); + + + /************* MIX FILTER ***********************/ + if ($filter_mix) { + if ($mix_loop) { + $mixBlock = ($mix_blockOffset + ($block % $mix_numBlocks)) % $mix_totalBlocks; + } else { + $mixBlock = $mix_blockOffset + $block; + } + + if ($mixBlock < $mix_maxBlock) { + $sampleFloat += $mix_wav->getSampleValue($mixBlock, $channel); + } + } + + /************* NORMALIZE FILTER *******************/ + if ($filter_normalize) { + $sampleFloat = $this->normalizeSample($sampleFloat, $normalize_threshold); + } + + /************* DEGRADE FILTER *******************/ + if ($filter_degrade) { + $sampleFloat += rand(1000000 * ($degrade_quality - 1), 1000000 * (1 - $degrade_quality)) / 1000000; + } + + /************* VOLUME FILTER *******************/ + if ($filter_vol) { + $sampleFloat *= $volume_amount; + } + + // write current sample + $this->setSampleValue($sampleFloat, $currentBlock, $channel); + } + } + + return $this; + } + + /** + * Append a wav file to the current wav. <br /> + * The wav files must have the same sample rate, number of bits per sample, and number of channels. + * + * @param WavFile $wav (Required) The wav file to append. + * @throws WavFileException + */ + public function appendWav(WavFile $wav) { + // basic checks + if ($wav->getSampleRate() != $this->getSampleRate()) { + throw new WavFileException("Sample rate for wav files do not match."); + } else if ($wav->getBitsPerSample() != $this->getBitsPerSample()) { + throw new WavFileException("Bits per sample for wav files do not match."); + } else if ($wav->getNumChannels() != $this->getNumChannels()) { + throw new WavFileException("Number of channels for wav files do not match."); + } + + $this->_samples .= $wav->_samples; + $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() + + return $this; + } + + /** + * Mix 2 wav files together. <br /> + * Both wavs must have the same sample rate and same number of channels. + * + * @param WavFile $wav (Required) The WavFile to mix. + * @param float $normalizeThreshold (Optional) See normalizeSample for an explanation. + * @throws WavFileException + */ + public function mergeWav(WavFile $wav, $normalizeThreshold = null) { + return $this->filter(array( + WavFile::FILTER_MIX => $wav, + WavFile::FILTER_NORMALIZE => $normalizeThreshold + )); + } + + /** + * Add silence to the wav file. + * + * @param float $duration (Optional) How many seconds of silence. If negative, add to the beginning of the file. Defaults to 1s. + */ + public function insertSilence($duration = 1.0) + { + $numSamples = (int)($this->getSampleRate() * abs($duration)); + $numChannels = $this->getNumChannels(); + + $data = str_repeat(self::packSample($this->getZeroAmplitude(), $this->getBitsPerSample()), $numSamples * $numChannels); + if ($duration >= 0) { + $this->_samples .= $data; + } else { + $this->_samples = $data . $this->_samples; + } + + $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() + + return $this; + } + + /** + * Degrade the quality of the wav file by introducing random noise. + * + * @param float quality (Optional) The quality relative to the amplitude. 1 = no noise, 0 = max. noise. + */ + public function degrade($quality = 1.0) + { + return $this->filter(array( + self::FILTER_DEGRADE => $quality + )); + } + + /** + * Generate noise at the end of the wav for the specified duration and volume. + * + * @param float $duration (Optional) Number of seconds of noise to generate. + * @param float $percent (Optional) The percentage of the maximum amplitude to use. 100 = full amplitude. + */ + public function generateNoise($duration = 1.0, $percent = 100) + { + $numChannels = $this->getNumChannels(); + $numSamples = $this->getSampleRate() * $duration; + $minAmp = $this->getMinAmplitude(); + $maxAmp = $this->getMaxAmplitude(); + $bitDepth = $this->getBitsPerSample(); + + for ($s = 0; $s < $numSamples; ++$s) { + if ($bitDepth == 32) { + $val = rand(-$percent * 10000, $percent * 10000) / 1000000; + } else { + $val = rand($minAmp, $maxAmp); + $val = (int)($val * $percent / 100); + } + + $this->_samples .= str_repeat(self::packSample($val, $bitDepth), $numChannels); + } + + $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() + + return $this; + } + + /** + * Convert sample data to different bits per sample. + * + * @param int $bitsPerSample (Required) The new number of bits per sample; + * @throws WavFileException + */ + public function convertBitsPerSample($bitsPerSample) { + if ($this->getBitsPerSample() == $bitsPerSample) { + return $this; + } + + $tempWav = new WavFile($this->getNumChannels(), $this->getSampleRate(), $bitsPerSample); + $tempWav->filter( + array(self::FILTER_MIX => $this), + 0, + $this->getNumBlocks() + ); + + $this->setSamples() // implicit setDataSize(), setSize(), setActualSize(), setNumBlocks() + ->setBitsPerSample($bitsPerSample); // implicit setValidBitsPerSample(), setAudioFormat(), setAudioSubFormat(), setFmtChunkSize(), setFactChunkSize(), setSize(), setActualSize(), setDataOffset(), setByteRate(), setBlockAlign(), setNumBlocks() + $this->_samples = $tempWav->_samples; + $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() + + return $this; + } + + + /*%******************************************************************************************%*/ + // Miscellaneous methods + + /** + * Output information about the wav object. + */ + public function displayInfo() + { + $s = "File Size: %u\n" + ."Chunk Size: %u\n" + ."fmt Subchunk Size: %u\n" + ."Extended fmt Size: %u\n" + ."fact Subchunk Size: %u\n" + ."Data Offset: %u\n" + ."Data Size: %u\n" + ."Audio Format: %s\n" + ."Audio SubFormat: %s\n" + ."Channels: %u\n" + ."Channel Mask: 0x%s\n" + ."Sample Rate: %u\n" + ."Bits Per Sample: %u\n" + ."Valid Bits Per Sample: %u\n" + ."Sample Block Size: %u\n" + ."Number of Sample Blocks: %u\n" + ."Byte Rate: %uBps\n"; + + $s = sprintf($s, $this->getActualSize(), + $this->getChunkSize(), + $this->getFmtChunkSize(), + $this->getFmtExtendedSize(), + $this->getFactChunkSize(), + $this->getDataOffset(), + $this->getDataSize(), + $this->getAudioFormat() == self::WAVE_FORMAT_PCM ? 'PCM' : ($this->getAudioFormat() == self::WAVE_FORMAT_IEEE_FLOAT ? 'IEEE FLOAT' : 'EXTENSIBLE'), + $this->getAudioSubFormat() == self::WAVE_SUBFORMAT_PCM ? 'PCM' : 'IEEE FLOAT', + $this->getNumChannels(), + dechex($this->getChannelMask()), + $this->getSampleRate(), + $this->getBitsPerSample(), + $this->getValidBitsPerSample(), + $this->getBlockAlign(), + $this->getNumBlocks(), + $this->getByteRate()); + + if (php_sapi_name() == 'cli') { + return $s; + } else { + return nl2br($s); + } + } +} + + +/*%******************************************************************************************%*/ +// Exceptions + +/** + * WavFileException indicates an illegal state or argument in this class. + */ +class WavFileException extends Exception {} + +/** + * WavFormatException indicates a malformed or unsupported wav file header. + */ +class WavFormatException extends WavFileException {} diff --git a/vendor/dapphp/securimage/audio/.htaccess b/vendor/dapphp/securimage/audio/.htaccess new file mode 100644 index 0000000..4fdb24a --- /dev/null +++ b/vendor/dapphp/securimage/audio/.htaccess @@ -0,0 +1,11 @@ +# Deny access to this folder + +# Apache 2.4 +<IfModule mod_authz_core.c> + Require all denied +</IfModule> + +# Apache 2.2 +<IfModule !mod_authz_core.c> + Deny from all +</IfModule> diff --git a/vendor/dapphp/securimage/composer.json b/vendor/dapphp/securimage/composer.json new file mode 100644 index 0000000..ada7882 --- /dev/null +++ b/vendor/dapphp/securimage/composer.json @@ -0,0 +1,27 @@ +{ + "name": "dapphp/securimage", + "type": "library", + "vesion": "3.6.3", + "description": "PHP CAPTCHA Library", + "keywords": ["captcha","security"], + "homepage": "https://www.phpcaptcha.org", + "license": "BSD", + "authors": [ + { + "name": "Drew Phillips", + "email": "drew@drew-phillips.com" + } + ], + "require": { + "php": ">=5.2.0", + "ext-gd": "*" + }, + "suggest": { + "ext-pdo": "For database storage support", + "ext-pdo_mysql": "For MySQL database support", + "ext-pdo_sqlite": "For SQLite3 database support" + }, + "autoload": { + "classmap": ["securimage.php"] + } +} diff --git a/vendor/dapphp/securimage/config.inc.php b/vendor/dapphp/securimage/config.inc.php new file mode 100644 index 0000000..2c83f03 --- /dev/null +++ b/vendor/dapphp/securimage/config.inc.php @@ -0,0 +1 @@ +<?php return array("session_name"=>"flyspray"); ?> diff --git a/vendor/dapphp/securimage/database/.htaccess b/vendor/dapphp/securimage/database/.htaccess new file mode 100644 index 0000000..4fdb24a --- /dev/null +++ b/vendor/dapphp/securimage/database/.htaccess @@ -0,0 +1,11 @@ +# Deny access to this folder + +# Apache 2.4 +<IfModule mod_authz_core.c> + Require all denied +</IfModule> + +# Apache 2.2 +<IfModule !mod_authz_core.c> + Deny from all +</IfModule> diff --git a/vendor/dapphp/securimage/database/index.html b/vendor/dapphp/securimage/database/index.html new file mode 100644 index 0000000..8d1c8b6 --- /dev/null +++ b/vendor/dapphp/securimage/database/index.html @@ -0,0 +1 @@ + diff --git a/vendor/dapphp/securimage/database/securimage.sq3 b/vendor/dapphp/securimage/database/securimage.sq3 Binary files differnew file mode 100644 index 0000000..a3fcbd7 --- /dev/null +++ b/vendor/dapphp/securimage/database/securimage.sq3 diff --git a/vendor/dapphp/securimage/images/audio_icon.png b/vendor/dapphp/securimage/images/audio_icon.png Binary files differnew file mode 100644 index 0000000..9922ef1 --- /dev/null +++ b/vendor/dapphp/securimage/images/audio_icon.png diff --git a/vendor/dapphp/securimage/images/loading.png b/vendor/dapphp/securimage/images/loading.png Binary files differnew file mode 100644 index 0000000..1711568 --- /dev/null +++ b/vendor/dapphp/securimage/images/loading.png diff --git a/vendor/dapphp/securimage/images/refresh.png b/vendor/dapphp/securimage/images/refresh.png Binary files differnew file mode 100644 index 0000000..f5e7d82 --- /dev/null +++ b/vendor/dapphp/securimage/images/refresh.png diff --git a/vendor/dapphp/securimage/securimage.css b/vendor/dapphp/securimage/securimage.css new file mode 100644 index 0000000..0cffdb9 --- /dev/null +++ b/vendor/dapphp/securimage/securimage.css @@ -0,0 +1,41 @@ +@CHARSET "UTF-8"; + +@-webkit-keyframes rotating /* Safari and Chrome */ { + from { + -ms-transform: rotate(0deg); + -moz-transform: rotate(0deg); + -webkit-transform: rotate(0deg); + -o-transform: rotate(0deg); + transform: rotate(0deg); + } + to { + -ms-transform: rotate(360deg); + -moz-transform: rotate(360deg); + -webkit-transform: rotate(360deg); + -o-transform: rotate(360deg); + transform: rotate(360deg); + } +} +@keyframes rotating { + from { + -ms-transform: rotate(0deg); + -moz-transform: rotate(0deg); + -webkit-transform: rotate(0deg); + -o-transform: rotate(0deg); + transform: rotate(0deg); + } + to { + -ms-transform: rotate(360deg); + -moz-transform: rotate(360deg); + -webkit-transform: rotate(360deg); + -o-transform: rotate(360deg); + transform: rotate(360deg); + } +} +.rotating { + -webkit-animation: rotating 1.5s linear infinite; + -moz-animation: rotating 1.5s linear infinite; + -ms-animation: rotating 1.5s linear infinite; + -o-animation: rotating 1.5s linear infinite; + animation: rotating 1.5s linear infinite; +}
\ No newline at end of file diff --git a/vendor/dapphp/securimage/securimage.js b/vendor/dapphp/securimage/securimage.js new file mode 100644 index 0000000..481e9e6 --- /dev/null +++ b/vendor/dapphp/securimage/securimage.js @@ -0,0 +1,252 @@ +/*! + * Securimage CAPTCHA Audio Library + * https://www.phpcaptcha.org/ + * + * Copyright 2015 phpcaptcha.org + * Released under the BSD-3 license + * See https://github.com/dapphp/securimage/blob/master/README.md + */ + +var SecurimageAudio = function(options) { + this.html5Support = true; + this.flashFallback = false; + this.captchaId = null; + this.playing = false; + this.reload = false; + this.audioElement = null; + this.controlsElement = null; + this.playButton = null; + this.playButtonImage = null; + this.loadingImage = null; + + if (options.audioElement) { + this.audioElement = document.getElementById(options.audioElement); + } + if (options.controlsElement) { + this.controlsElement = document.getElementById(options.controlsElement); + } + + this.init(); +} + +SecurimageAudio.prototype.init = function() { + var ua = navigator.userAgent.toLowerCase(); + var ieVer = (ua.indexOf('msie') != -1) ? parseInt(ua.split('msie')[1]) : false; + // ie 11+ detection + if (!ieVer && null != (ieVer = ua.match(/trident\/.*rv:(\d+\.\d+)/))) + ieVer = parseInt(ieVer[1]); + + var objAu = this.audioElement.getElementsByTagName('object'); + if (objAu.length > 0) { + objAu = objAu[0]; + } else { + objAu = null; + } + + if (ieVer) { + if (ieVer < 9) { + // no html5 audio support, hide player controls + this.controlsElement.style.display = 'none'; + this.html5Support = false; + return ; + } else if ('' == this.audioElement.canPlayType('audio/wav')) { + // check for mpeg <source> tag - if not found then fallback to flash + var sources = this.audioElement.getElementsByTagName('source'); + var mp3support = false; + var type; + + if (objAu) { + this.flashFallback = true; + } + + for (var i = 0; i < sources.length; ++i) { + type = sources[i].attributes["type"].value; + if (type.toLowerCase().indexOf('mpeg') >= 0 || type.toLowerCase().indexOf('mp3') >= 0) { + mp3support = true; + break; + } + } + + if (false == mp3support) { + // browser supports <audio> but does not support WAV audio and no flash audio available + this.html5Support = false; + + if (this.flashFallback) { + // ie9+? bug - flash object does not display when moved from within audio tag to other dom node + var newObjAu = document.createElement('object'); + var newParams = document.createElement('param'); + var oldParams = objAu.getElementsByTagName('param'); + this.copyElementAttributes(newObjAu, objAu); + if (oldParams.length > 0) { + this.copyElementAttributes(newParams, oldParams[0]); + newObjAu.appendChild(newParams); + } + objAu.parentNode.removeChild(objAu); + this.audioElement.parentNode.appendChild(newObjAu); + } + + this.audioElement.parentNode.removeChild(this.audioElement); + this.controlsElement.parentNode.removeChild(this.controlsElement); + + return ; + } + } + } + + this.audioElement.addEventListener('playing', this.updateControls.bind(this), false); + this.audioElement.addEventListener('ended', this.audioStopped.bind(this), false); + + // find the element used as the play button and register click event to play/stop audio + var children = this.controlsElement.getElementsByTagName('*'); + for (var i = 0; i < children.length; ++i) { + var el = children[i]; + if (undefined != el.className) { + if (el.className.indexOf('play_button') >= 0) { + this.playButton = el; + el.addEventListener('click', this.play.bind(this), false); + } else if (el.className.indexOf('play_image') >= 0) { + this.playButtonImage = el; + } else if (el.className.indexOf('loading_image') >= 0) { + this.loadingImage = el; + } + } + } + + if (objAu) { + // remove flash object from DOM + objAu.parentNode.removeChild(objAu); + } +} + +SecurimageAudio.prototype.play = function(evt) { + if (null != this.playButton) { + this.playButton.blur(); + } + + if (this.reload) { + this.replaceElements(); + this.reload = false; + } + + try { + if (!this.playing) { + if (this.playButtonImage != null) { + this.playButtonImage.style.display = 'none'; + } + if (this.loadingImage != null) { + this.loadingImage.style.display = ''; + } + //TODO: FIX, most likely browser doesn't support audio type + this.audioElement.onerror = this.audioError; + try { + this.audioElement.play(); + } catch(ex) { + alert('Audio error: ' + ex); + } + } else { + this.audioElement.pause(); + if (this.loadingImage != null) { + this.loadingImage.style.display = 'none'; + } + if (this.playButtonImage != null) { + this.playButtonImage.style.display = ''; + } + this.playing = false; + } + } catch (ex) { + alert('Audio error: ' + ex); + } + + if (undefined !== evt) { + evt.preventDefault(); + } + return false; +} + +SecurimageAudio.prototype.refresh = function(captchaId) { + if (!this.html5Support) { + return; + } + + if (undefined !== captchaId) { + this.captchaId = captchaId; + } + + this.playing = true; + this.reload = false; + this.play(); // stops audio if playing + this.reload = true; + + return false; +} + +SecurimageAudio.prototype.copyElementAttributes = function(newEl, el) { + for (var i = 0, atts = el.attributes, n = atts.length; i < n; ++i) { + newEl.setAttribute(atts[i].nodeName, atts[i].value); + } + + return newEl; +} + +SecurimageAudio.prototype.replaceElements = function() { + var parent = this.audioElement.parentNode; + parent.removeChild(this.audioElement); + + var newAudioEl = document.createElement('audio'); + newAudioEl.setAttribute('style', 'display: none;'); + newAudioEl.setAttribute('preload', 'false'); + newAudioEl.setAttribute('id', this.audioElement.id); + + for (var c = 0; c < this.audioElement.children.length; ++c) { + if (this.audioElement.children[c].tagName.toLowerCase() != 'source') continue; + var sourceEl = document.createElement('source'); + this.copyElementAttributes(sourceEl, this.audioElement.children[c]); + var cid = (null !== this.captchaId) ? this.captchaId : (Math.random() + '').replace('0.', ''); + sourceEl.src = sourceEl.src.replace(/([?|&])id=[a-zA-Z0-9]+/, '$1id=' + cid); + newAudioEl.appendChild(sourceEl); + } + + this.audioElement = null; + this.audioElement = newAudioEl; + parent.appendChild(this.audioElement); + + this.audioElement.addEventListener('playing', this.updateControls.bind(this), false); + this.audioElement.addEventListener('ended', this.audioStopped.bind(this), false); +} + +SecurimageAudio.prototype.updateControls = function() { + this.playing = true; + if (this.loadingImage != null) { + this.loadingImage.style.display = 'none'; + } + if (this.playButtonImage != null) { + this.playButtonImage.style.display = ''; + } +} + +SecurimageAudio.prototype.audioStopped = function() { + this.playing = false; +} + +SecurimageAudio.prototype.audioError = function(err) { + var msg = null; + switch(err.target.error.code) { + case err.target.error.MEDIA_ERR_ABORTED: + break; + case err.target.error.MEDIA_ERR_NETWORK: + msg = 'A network error caused the audio download to fail.'; + break; + case err.target.error.MEDIA_ERR_DECODE: + alert('An error occurred while decoding the audio'); + break; + case err.target.error.MEDIA_ERR_SRC_NOT_SUPPORTED: + alert('The audio format is not supported by your browser.'); + break; + default: + alert('An unknown error occurred trying to play the audio.'); + break; + } + if (msg) { + alert('Audio playback error: ' + msg); + } +} diff --git a/vendor/dapphp/securimage/securimage.php b/vendor/dapphp/securimage/securimage.php new file mode 100644 index 0000000..1582b81 --- /dev/null +++ b/vendor/dapphp/securimage/securimage.php @@ -0,0 +1,3468 @@ +<?php + +// error_reporting(E_ALL); ini_set('display_errors', 1); // uncomment this line for debugging + +/** + * Project: Securimage: A PHP class dealing with CAPTCHA images, audio, and validation + * File: securimage.php + * + * Copyright (c) 2017, Drew Phillips + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * Any modifications to the library should be indicated clearly in the source code + * to inform users that the changes are not a part of the original software. + * + * If you found this script useful, please take a quick moment to rate it. + * http://www.hotscripts.com/rate/49400.html Thanks. + * + * @link http://www.phpcaptcha.org Securimage PHP CAPTCHA + * @link http://www.phpcaptcha.org/latest.zip Download Latest Version + * @link http://www.phpcaptcha.org/Securimage_Docs/ Online Documentation + * @copyright 2017 Drew Phillips + * @author Drew Phillips <drew@drew-phillips.com> + * @version 3.6.6 (Nov 20 2017) + * @package Securimage + * + */ + +/** + + ChangeLog + 3.6.6 + - Not critical: Fix potential HTML injection in example form via HTTP_USER_AGENT (CVE-2017-14077) + + 3.6.5 + - Fix regex in replaceElements in securimage.js + - Update examples + - Exclude certain examples from Git autogenerated archives + + 3.6.4 + - Fix XSS vulnerability in example_form.ajax.php (Discovered by RedTeam. advisory rt-sa-2016-002) + - Update example_form.ajax.php to use Securimage::getCaptchaHtml() + + 3.6.3 + - Add support for multibyte wordlist files + - Fix code generation issues with UTF-8 charsets + - Add parameter to getCaptchaHtml() method to control display components of captcha HTML + - Fix database audio storage issue with multiple namespaces + + 3.6.2 + - Support HTTP range requests with audio playback (iOS requirement) + - Add optional config.inc.php for storing global configuration settings + + 3.6.1 + - Fix copyElement bug in securimage.js for IE Flash fallback + + 3.6 + - Implement CAPTCHA audio using HTML5 <audio> with optional Flash fallback + - Support MP3 audio using LAME MP3 Encoder (Internet Explorer 9+ does not support WAV format in <audio> tags) + - Add getCaptchaHtml() options to support full framework integration (ruifil) + + 3.5.4 + - Fix email validation code in example form files + - Fix backslashes in getCaptchaHtml for img attribute on Windows systems + + 3.5.3 + - Add options for audio button to getCaptchaHtml(), fix urlencoding of flash parameters that was breaking button + + 3.5.2 + + - Add Securimage::getCaptchaHtml() for getting automatically generated captcha html code + - Option for using SoX to add effects to captcha audio to make identification by neural networks more difficult + - Add setNamespace() method + - Add getTimeToSolve() method + - Add session_status() check so session still starts if one had previously been opened and closed + - Add .htaccess file to audio directory to deny access; update audio files + - Option to skip checking of database tables during connection + - Add composer.json to package, submit to packagist + - Add font_ratio variable to determine size of font (github.com/wilkor) + - Add hint if sqlite3 database is not writeable. Improve database error handling, add example database options to securimage_play.php + - Fixed issue regarding database storage and math captcha breaking audio output (github.com/SoftwareAndOutsourcing) + + 3.5.1 + - Fix XSS vulnerability in example_form.php (discovered by Gjoko Krstic - <gjoko@zeroscience.mk>) + + 3.5 + - Release new version + - MB string support for charlist + - Modify audio file path to use language directories + - Changed default captcha appearance + + 3.2RC4 + - Add MySQL, PostgreSQL, and SQLite3 support for database storage + - Deprecate "use_sqlite_db" option and remove SQLite2/sqlite_* functions + - Add new captcha type that displays 2 dictionary words on one image + - Update examples + + 3.2RC3 + - Fix canSendHeaders() check which was breaking if a PHP startup error was issued + + 3.2RC2 + - Add error handler (https://github.com/dapphp/securimage/issues/15) + - Fix flash examples to use the correct value name for audio parameter + + 3.2RC1 + - New audio captcha code. Faster, fully dynamic audio, full WAV support + (Paul Voegler, Drew Phillips) <http://voegler.eu/pub/audio> + - New Flash audio streaming button. User defined image and size supported + - Additional options for customizing captcha (noise_level, send_headers, + no_exit, no_session, display_value + - Add captcha ID support. Uses sqlite and unique captcha IDs to track captchas, + no session used + - Add static methods for creating and validating captcha by ID + - Automatic clearing of old codes from SQLite database + + 3.0.3Beta + - Add improved mixing function to WavFile class (Paul Voegler) + - Improve performance and security of captcha audio (Paul Voegler, Drew Phillips) + - Add option to use random file as background noise in captcha audio + - Add new securimage options for audio files + + 3.0.2Beta + - Fix issue with session variables when upgrading from 2.0 - 3.0 + - Improve audio captcha, switch to use WavFile class, make mathematical captcha audio work + + 3.0.1 + - Bugfix: removed use of deprecated variable in addSignature method that would cause errors with display_errors on + + 3.0 + - Rewrite class using PHP5 OOP + - Remove support for GD fonts, require FreeType + - Remove support for multi-color codes + - Add option to make codes case-sensitive + - Add namespaces to support multiple captchas on a single page or page specific captchas + - Add option to show simple math problems instead of codes + - Remove support for mp3 files due to vulnerability in decoding mp3 audio files + - Create new flash file to stream wav files instead of mp3 + - Changed to BSD license + + 2.0.2 + - Fix pathing to make integration into libraries easier (Nathan Phillip Brink ohnobinki@ohnopublishing.net) + + 2.0.1 + - Add support for browsers with cookies disabled (requires php5, sqlite) maps users to md5 hashed ip addresses and md5 hashed codes for security + - Add fallback to gd fonts if ttf support is not enabled or font file not found (Mike Challis http://www.642weather.com/weather/scripts.php) + - Check for previous definition of image type constants (Mike Challis) + - Fix mime type settings for audio output + - Fixed color allocation issues with multiple colors and background images, consolidate allocation to one function + - Ability to let codes expire after a given length of time + - Allow HTML color codes to be passed to Securimage_Color (suggested by Mike Challis) + + 2.0.0 + - Add mathematical distortion to characters (using code from HKCaptcha) + - Improved session support + - Added Securimage_Color class for easier color definitions + - Add distortion to audio output to prevent binary comparison attack (proposed by Sven "SavageTiger" Hagemann [insecurity.nl]) + - Flash button to stream mp3 audio (Douglas Walsh www.douglaswalsh.net) + - Audio output is mp3 format by default + - Change font to AlteHaasGrotesk by yann le coroller + - Some code cleanup + + 1.0.4 (unreleased) + - Ability to output audible codes in mp3 format to stream from flash + + 1.0.3.1 + - Error reading from wordlist in some cases caused words to be cut off 1 letter short + + 1.0.3 + - Removed shadow_text from code which could cause an undefined property error due to removal from previous version + + 1.0.2 + - Audible CAPTCHA Code wav files + - Create codes from a word list instead of random strings + + 1.0 + - Added the ability to use a selected character set, rather than a-z0-9 only. + - Added the multi-color text option to use different colors for each letter. + - Switched to automatic session handling instead of using files for code storage + - Added GD Font support if ttf support is not available. Can use internal GD fonts or load new ones. + - Added the ability to set line thickness + - Added option for drawing arced lines over letters + - Added ability to choose image type for output + + */ + + +/** + * Securimage CAPTCHA Class. + * + * A class for creating and validating secure CAPTCHA images and audio. + * + * The class contains many options regarding appearance, security, storage of + * captcha data and image/audio generation options. + * +* @package Securimage + * @subpackage classes + * @author Drew Phillips <drew@drew-phillips.com> + * + */ +class Securimage +{ + // All of the public variables below are securimage options + // They can be passed as an array to the Securimage constructor, set below, + // or set from securimage_show.php and securimage_play.php + + /** + * Constant for rendering captcha as a JPEG image + * @var int + */ + const SI_IMAGE_JPEG = 1; + + /** + * Constant for rendering captcha as a PNG image (default) + * @var int + */ + + const SI_IMAGE_PNG = 2; + /** + * Constant for rendering captcha as a GIF image + * @var int + */ + const SI_IMAGE_GIF = 3; + + /** + * Constant for generating a normal alphanumeric captcha based on the + * character set + * + * @see Securimage::$charset charset property + * @var int + */ + const SI_CAPTCHA_STRING = 0; + + /** + * Constant for generating a captcha consisting of a simple math problem + * + * @var int + */ + const SI_CAPTCHA_MATHEMATIC = 1; + + /** + * Constant for generating a word based captcha using 2 words from a list + * + * @var int + */ + const SI_CAPTCHA_WORDS = 2; + + /** + * MySQL option identifier for database storage option + * + * @var string + */ + const SI_DRIVER_MYSQL = 'mysql'; + + /** + * PostgreSQL option identifier for database storage option + * + * @var string + */ + const SI_DRIVER_PGSQL = 'pgsql'; + + /** + * SQLite option identifier for database storage option + * + * @var string + */ + const SI_DRIVER_SQLITE3 = 'sqlite'; + + /** + * getCaptchaHtml() display constant for HTML Captcha Image + * + * @var integer + */ + const HTML_IMG = 1; + + /** + * getCaptchaHtml() display constant for HTML5 Audio code + * + * @var integer + */ + const HTML_AUDIO = 2; + + /** + * getCaptchaHtml() display constant for Captcha Input text box + * + * @var integer + */ + const HTML_INPUT = 4; + + /** + * getCaptchaHtml() display constant for Captcha Text HTML label + * + * @var integer + */ + const HTML_INPUT_LABEL = 8; + + /** + * getCaptchaHtml() display constant for HTML Refresh button + * + * @var integer + */ + const HTML_ICON_REFRESH = 16; + + /** + * getCaptchaHtml() display constant for all HTML elements (default) + * + * @var integer + */ + const HTML_ALL = 0xffffffff; + + /*%*********************************************************************%*/ + // Properties + + /** + * The width of the captcha image + * @var int + */ + public $image_width = 215; + + /** + * The height of the captcha image + * @var int + */ + public $image_height = 80; + + /** + * Font size is calculated by image height and this ratio. Leave blank for + * default ratio of 0.4. + * + * Valid range: 0.1 - 0.99. + * + * Depending on image_width, values > 0.6 are probably too large and + * values < 0.3 are too small. + * + * @var float + */ + public $font_ratio; + + /** + * The type of the image, default = png + * + * @see Securimage::SI_IMAGE_PNG SI_IMAGE_PNG + * @see Securimage::SI_IMAGE_JPEG SI_IMAGE_JPEG + * @see Securimage::SI_IMAGE_GIF SI_IMAGE_GIF + * @var int + */ + public $image_type = self::SI_IMAGE_PNG; + + /** + * The background color of the captcha + * @var Securimage_Color|string + */ + public $image_bg_color = '#ffffff'; + + /** + * The color of the captcha text + * @var Securimage_Color|string + */ + public $text_color = '#707070'; + + /** + * The color of the lines over the captcha + * @var Securimage_Color|string + */ + public $line_color = '#707070'; + + /** + * The color of the noise that is drawn + * @var Securimage_Color|string + */ + public $noise_color = '#707070'; + + /** + * How transparent to make the text. + * + * 0 = completely opaque, 100 = invisible + * + * @var int + */ + public $text_transparency_percentage = 20; + + /** + * Whether or not to draw the text transparently. + * + * true = use transparency, false = no transparency + * + * @var bool + */ + public $use_transparent_text = true; + + /** + * The length of the captcha code + * @var int + */ + public $code_length = 6; + + /** + * Whether the captcha should be case sensitive or not. + * + * Not recommended, use only for maximum protection. + * + * @var bool + */ + public $case_sensitive = false; + + /** + * The character set to use for generating the captcha code + * @var string + */ + public $charset = 'ABCDEFGHKLMNPRSTUVWYZabcdefghklmnprstuvwyz23456789'; + + /** + * How long in seconds a captcha remains valid, after this time it will be + * considered incorrect. + * + * @var int + */ + public $expiry_time = 900; + + /** + * The session name securimage should use. + * + * Only use if your application uses a custom session name (e.g. Joomla). + * It is recommended to set this value here so it is used by all securimage + * scripts (i.e. securimage_show.php) + * + * @var string + */ + public $session_name = null; + + /** + * true to use the wordlist file, false to generate random captcha codes + * @var bool + */ + public $use_wordlist = false; + + /** + * The level of distortion. + * + * 0.75 = normal, 1.0 = very high distortion + * + * @var double + */ + public $perturbation = 0.85; + + /** + * How many lines to draw over the captcha code to increase security + * @var int + */ + public $num_lines = 5; + + /** + * The level of noise (random dots) to place on the image, 0-10 + * @var int + */ + public $noise_level = 2; + + /** + * The signature text to draw on the bottom corner of the image + * @var string + */ + public $image_signature = ''; + + /** + * The color of the signature text + * @var Securimage_Color|string + */ + public $signature_color = '#707070'; + + /** + * The path to the ttf font file to use for the signature text. + * Defaults to $ttf_file (AHGBold.ttf) + * + * @see Securimage::$ttf_file + * @var string + */ + public $signature_font; + + /** + * No longer used. + * + * Use an SQLite database to store data (for users that do not support cookies) + * + * @var bool + * @see Securimage::$database_driver database_driver property + * @deprecated 3.2RC4 + */ + public $use_sqlite_db = false; + + /** + * Use a database backend for code storage. + * Provides a fallback to users with cookies disabled. + * Required when using captcha IDs. + * + * @see Securimage::$database_driver + * @var bool + */ + public $use_database = false; + + /** + * Whether or not to skip checking if Securimage tables exist when using a + * database. + * + * Turn this to true once database functionality is working to improve + * performance. + * + * @var bool true to not check if captcha_codes tables are set up, false + * to check (and create if necessary) + */ + public $skip_table_check = false; + + /** + * Database driver to use for database support. + * Allowable values: *mysql*, *pgsql*, *sqlite*. + * Default: sqlite + * + * @var string + */ + public $database_driver = self::SI_DRIVER_SQLITE3; + + /** + * Database host to connect to when using mysql or postgres + * + * On Linux use "localhost" for Unix domain socket, otherwise uses TCP/IP + * + * Does not apply to SQLite + * + * @var string + */ + public $database_host = 'localhost'; + + /** + * Database username for connection (mysql, postgres only) + * Default is an empty string + * + * @var string + */ + public $database_user = ''; + + /** + * Database password for connection (mysql, postgres only) + * Default is empty string + * + * @var string + */ + public $database_pass = ''; + + /** + * Name of the database to select (mysql, postgres only) + * + * @see Securimage::$database_file for SQLite + * @var string + */ + public $database_name = ''; + + /** + * Database table where captcha codes are stored + * + * Note: Securimage will attempt to create this table for you if it does + * not exist. If the table cannot be created, an E_USER_WARNING is emitted + * + * @var string + */ + public $database_table = 'captcha_codes'; + + /** + * Fully qualified path to the database file when using SQLite3. + * + * This value is only used when $database_driver == sqlite and does + * not apply when no database is used, or when using MySQL or PostgreSQL. + * + * On *nix, file must have permissions of 0666. + * + * **Make sure the directory containing this file is NOT web accessible** + * + * @var string + */ + public $database_file; + + /** + * The type of captcha to create. + * + * Either alphanumeric based on *charset*, a simple math problem, or an + * image consisting of 2 words from the word list. + * + * @see Securimage::SI_CAPTCHA_STRING SI_CAPTCHA_STRING + * @see Securimage::SI_CAPTCHA_MATHEMATIC SI_CAPTCHA_MATHEMATIC + * @see Securimage::SI_CAPTCHA_WORDS SI_CAPTCHA_WORDS + * @see Securimage::$charset charset property + * @see Securimage::$wordlist_file wordlist_file property + * @var int + */ + public $captcha_type = self::SI_CAPTCHA_STRING; // or self::SI_CAPTCHA_MATHEMATIC, or self::SI_CAPTCHA_WORDS; + + /** + * The captcha namespace used for having multiple captchas on a page or + * to separate captchas from differen forms on your site. + * Example: + * + * <?php + * // use <img src="securimage_show.php?namespace=contact_form"> + * // or manually in securimage_show.php + * $img->setNamespace('contact_form'); + * + * // in form validator + * $img->setNamespace('contact_form'); + * if ($img->check($code) == true) { + * echo "Valid!"; + * } + * + * @var string + */ + public $namespace; + + /** + * The TTF font file to use to draw the captcha code. + * + * Leave blank for default font AHGBold.ttf + * + * @var string + */ + public $ttf_file; + + /** + * The path to the wordlist file to use. + * + * Leave blank for default words/words.txt + * + * @var string + */ + public $wordlist_file; + + /** + * Character encoding of the wordlist file. + * Requires PHP Multibyte String (mbstring) support. + * Allows word list to contain characters other than US-ASCII (requires compatible TTF font). + * + * @var string The character encoding (e.g. UTF-8, UTF-7, EUC-JP, GB2312) + * @see http://php.net/manual/en/mbstring.supported-encodings.php + * @since 3.6.3 + */ + public $wordlist_file_encoding = null; + + /** + * The directory to scan for background images, if set a random background + * will be chosen from this folder + * + * @var string + */ + public $background_directory; + + /** + * No longer used + * + * The path to the SQLite database file to use + * + * @deprecated 3.2RC4 + * @see Securimage::$database_file database_file property + * @var string + */ + public $sqlite_database; + + /** + * The path to the audio files to be used for audio captchas. + * + * Can also be set in securimage_play.php + * + * Example: + * + * $img->audio_path = '/home/yoursite/public_html/securimage/audio/en/'; + * + * @var string + */ + public $audio_path; + + /** + * Use SoX (The Swiss Army knife of audio manipulation) for audio effects + * and processing. + * + * Using SoX should make it more difficult for bots to solve audio captchas + * + * @see Securimage::$sox_binary_path sox_binary_path property + * @var bool true to use SoX, false to use PHP + */ + public $audio_use_sox = false; + + /** + * The path to the SoX binary on your system + * + * @var string + */ + public $sox_binary_path = '/usr/bin/sox'; + + /** + * The path to the lame (mp3 encoder) binary on your system + * Static so that Securimage::getCaptchaHtml() has access to this value. + * + * @since 3.6 + * @var string + */ + public static $lame_binary_path = '/usr/bin/lame'; + + /** + * The path to the directory containing audio files that will be selected + * randomly and mixed with the captcha audio. + * + * @var string + */ + public $audio_noise_path; + + /** + * Whether or not to mix background noise files into captcha audio + * + * Mixing random background audio with noise can help improve security of + * audio captcha. + * + * Default: securimage/audio/noise + * + * @since 3.0.3 + * @see Securimage::$audio_noise_path audio_noise_path property + * @var bool true = mix, false = no + */ + public $audio_use_noise; + + /** + * The method and threshold (or gain factor) used to normalize the mixing + * with background noise. + * + * See http://www.voegler.eu/pub/audio/ for more information. + * + * Default: 0.6 + * + * Valid: + * >= 1 + * Normalize by multiplying by the threshold (boost - positive gain). + * A value of 1 in effect means no normalization (and results in clipping). + * + * <= -1 + * Normalize by dividing by the the absolute value of threshold (attenuate - negative gain). + * A factor of 2 (-2) is about 6dB reduction in volume. + * + * [0, 1) (open inverval - not including 1) + * The threshold above which amplitudes are comressed logarithmically. + * e.g. 0.6 to leave amplitudes up to 60% "as is" and compressabove. + * + * (-1, 0) (open inverval - not including -1 and 0) + * The threshold above which amplitudes are comressed linearly. + * e.g. -0.6 to leave amplitudes up to 60% "as is" and compress above. + * + * @since 3.0.4 + * @var float + */ + public $audio_mix_normalization = 0.8; + + /** + * Whether or not to degrade audio by introducing random noise. + * + * Current research shows this may not increase the security of audible + * captchas. + * + * Default: true + * + * @since 3.0.3 + * @var bool + */ + public $degrade_audio; + + /** + * Minimum delay to insert between captcha audio letters in milliseconds + * + * @since 3.0.3 + * @var float + */ + public $audio_gap_min = 0; + + /** + * Maximum delay to insert between captcha audio letters in milliseconds + * + * @since 3.0.3 + * @var float + */ + public $audio_gap_max = 3000; + + /** + * Captcha ID if using static captcha + * @var string Unique captcha id + */ + protected static $_captchaId = null; + + /** + * The GD image resource of the captcha image + * + * @var resource + */ + protected $im; + + /** + * A temporary GD image resource of the captcha image for distortion + * + * @var resource + */ + protected $tmpimg; + + /** + * The background image GD resource + * @var string + */ + protected $bgimg; + + /** + * Scale factor for magnification of distorted captcha image + * + * @var int + */ + protected $iscale = 5; + + /** + * Absolute path to securimage directory. + * + * This is calculated at runtime + * + * @var string + */ + public $securimage_path = null; + + /** + * The captcha challenge value. + * + * Either the case-sensitive/insensitive word captcha, or the solution to + * the math captcha. + * + * @var string|bool Captcha challenge value + */ + protected $code; + + /** + * The display value of the captcha to draw on the image + * + * Either the word captcha or the math equation to present to the user + * + * @var string Captcha display value to draw on the image + */ + protected $code_display; + + /** + * Alternate text to draw as the captcha image text + * + * A value that can be passed to the constructor that can be used to + * generate a captcha image with a given value. + * + * This value does not get stored in the session or database and is only + * used when calling Securimage::show(). + * + * If a display_value was passed to the constructor and the captcha image + * is generated, the display_value will be used as the string to draw on + * the captcha image. + * + * Used only if captcha codes are generated and managed by a 3rd party + * app/library + * + * @var string Captcha code value to display on the image + */ + public $display_value; + + /** + * Captcha code supplied by user [set from Securimage::check()] + * + * @var string + */ + protected $captcha_code; + + /** + * Time (in seconds) that the captcha was solved in (correctly or incorrectly). + * + * This is from the time of code creation, to when validation was attempted. + * + * @var int + */ + protected $_timeToSolve = 0; + + /** + * Flag that can be specified telling securimage not to call exit after + * generating a captcha image or audio file + * + * @var bool If true, script will not terminate; if false script will terminate (default) + */ + protected $no_exit; + + /** + * Flag indicating whether or not a PHP session should be started and used + * + * @var bool If true, no session will be started; if false, session will be started and used to store data (default) + */ + protected $no_session; + + /** + * Flag indicating whether or not HTTP headers will be sent when outputting + * captcha image/audio + * + * @var bool If true (default) headers will be sent, if false, no headers are sent + */ + protected $send_headers; + + /** + * PDO connection when a database is used + * + * @var PDO|bool + */ + protected $pdo_conn; + + /** + * The GD color for the background color + * + * @var int + */ + protected $gdbgcolor; + + /** + * The GD color for the text color + * + * @var int + */ + protected $gdtextcolor; + + /** + * The GD color for the line color + * + * @var int + */ + protected $gdlinecolor; + + /** + * The GD color for the signature text color + * + * @var int + */ + protected $gdsignaturecolor; + + /** + * Create a new securimage object, pass options to set in the constructor. + * + * The object can then be used to display a captcha, play an audible captcha, or validate a submission. + * + * @param array $options Options to initialize the class. May be any class property. + * + * $options = array( + * 'text_color' => new Securimage_Color('#013020'), + * 'code_length' => 5, + * 'num_lines' => 5, + * 'noise_level' => 3, + * 'font_file' => Securimage::getPath() . '/custom.ttf' + * ); + * + * $img = new Securimage($options); + * + */ + public function __construct($options = array()) + { + $this->securimage_path = dirname(__FILE__); + + if (!is_array($options)) { + trigger_error( + '$options passed to Securimage::__construct() must be an array. ' . + gettype($options) . ' given', + E_USER_WARNING + ); + $options = array(); + } + + // check for and load settings from custom config file + if (file_exists(dirname(__FILE__) . '/config.inc.php')) { + $settings = include dirname(__FILE__) . '/config.inc.php'; + + if (is_array($settings)) { + $options = array_merge($settings, $options); + } + } + + if (is_array($options) && sizeof($options) > 0) { + foreach($options as $prop => $val) { + if ($prop == 'captchaId') { + Securimage::$_captchaId = $val; + $this->use_database = true; + } else if ($prop == 'use_sqlite_db') { + trigger_error("The use_sqlite_db option is deprecated, use 'use_database' instead", E_USER_NOTICE); + } else { + $this->$prop = $val; + } + } + } + + $this->image_bg_color = $this->initColor($this->image_bg_color, '#ffffff'); + $this->text_color = $this->initColor($this->text_color, '#616161'); + $this->line_color = $this->initColor($this->line_color, '#616161'); + $this->noise_color = $this->initColor($this->noise_color, '#616161'); + $this->signature_color = $this->initColor($this->signature_color, '#616161'); + + if (is_null($this->ttf_file)) { + $this->ttf_file = $this->securimage_path . '/AHGBold.ttf'; + } + + $this->signature_font = $this->ttf_file; + + if (is_null($this->wordlist_file)) { + $this->wordlist_file = $this->securimage_path . '/words/words.txt'; + } + + if (is_null($this->database_file)) { + $this->database_file = $this->securimage_path . '/database/securimage.sq3'; + } + + if (is_null($this->audio_path)) { + $this->audio_path = $this->securimage_path . '/audio/en/'; + } + + if (is_null($this->audio_noise_path)) { + $this->audio_noise_path = $this->securimage_path . '/audio/noise/'; + } + + if (is_null($this->audio_use_noise)) { + $this->audio_use_noise = true; + } + + if (is_null($this->degrade_audio)) { + $this->degrade_audio = true; + } + + if (is_null($this->code_length) || (int)$this->code_length < 1) { + $this->code_length = 6; + } + + if (is_null($this->perturbation) || !is_numeric($this->perturbation)) { + $this->perturbation = 0.75; + } + + if (is_null($this->namespace) || !is_string($this->namespace)) { + $this->namespace = 'default'; + } + + if (is_null($this->no_exit)) { + $this->no_exit = false; + } + + if (is_null($this->no_session)) { + $this->no_session = false; + } + + if (is_null($this->send_headers)) { + $this->send_headers = true; + } + + if ($this->no_session != true) { + // Initialize session or attach to existing + if ( session_id() == '' || (function_exists('session_status') && PHP_SESSION_NONE == session_status()) ) { // no session has been started yet (or it was previousy closed), which is needed for validation + if (!is_null($this->session_name) && trim($this->session_name) != '') { + session_name(trim($this->session_name)); // set session name if provided + } + session_start(); + } + } + } + + /** + * Return the absolute path to the Securimage directory. + * + * @return string The path to the securimage base directory + */ + public static function getPath() + { + return dirname(__FILE__); + } + + /** + * Generate a new captcha ID or retrieve the current ID (if exists). + * + * @param bool $new If true, generates a new challenge and returns and ID. If false, the existing captcha ID is returned, or null if none exists. + * @param array $options Additional options to be passed to Securimage. + * $options must include database settings if they are not set directly in securimage.php + * + * @return null|string Returns null if no captcha id set and new was false, or the captcha ID + */ + public static function getCaptchaId($new = true, array $options = array()) + { + if (is_null($new) || (bool)$new == true) { + $id = sha1(uniqid($_SERVER['REMOTE_ADDR'], true)); + $opts = array('no_session' => true, + 'use_database' => true); + if (sizeof($options) > 0) $opts = array_merge($options, $opts); + $si = new self($opts); + Securimage::$_captchaId = $id; + $si->createCode(); + + return $id; + } else { + return Securimage::$_captchaId; + } + } + + /** + * Validate a captcha code input against a captcha ID + * + * @param string $id The captcha ID to check + * @param string $value The captcha value supplied by the user + * @param array $options Array of options to construct Securimage with. + * Options must include database options if they are not set in securimage.php + * + * @see Securimage::$database_driver + * @return bool true if the code was valid for the given captcha ID, false if not or if database failed to open + */ + public static function checkByCaptchaId($id, $value, array $options = array()) + { + $opts = array('captchaId' => $id, + 'no_session' => true, + 'use_database' => true); + + if (sizeof($options) > 0) $opts = array_merge($options, $opts); + + $si = new self($opts); + + if ($si->openDatabase()) { + $code = $si->getCodeFromDatabase(); + + if (is_array($code)) { + $si->code = $code['code']; + $si->code_display = $code['code_disp']; + } + + if ($si->check($value)) { + $si->clearCodeFromDatabase(); + + return true; + } else { + return false; + } + } else { + return false; + } + } + + + /** + * Generates a new challenge and serves a captcha image. + * + * Appropriate headers will be sent to the browser unless the *send_headers* option is false. + * + * @param string $background_image The absolute or relative path to the background image to use as the background of the captcha image. + * + * $img = new Securimage(); + * $img->code_length = 6; + * $img->num_lines = 5; + * $img->noise_level = 5; + * + * $img->show(); // sends the image and appropriate headers to browser + * exit; + */ + public function show($background_image = '') + { + set_error_handler(array(&$this, 'errorHandler')); + + if($background_image != '' && is_readable($background_image)) { + $this->bgimg = $background_image; + } + + $this->doImage(); + } + + /** + * Checks a given code against the correct value from the session and/or database. + * + * @param string $code The captcha code to check + * + * $code = $_POST['code']; + * $img = new Securimage(); + * if ($img->check($code) == true) { + * $captcha_valid = true; + * } else { + * $captcha_valid = false; + * } + * + * @return bool true if the given code was correct, false if not. + */ + public function check($code) + { + $this->code_entered = $code; + $this->validate(); + return $this->correct_code; + } + + /** + * Returns HTML code for displaying the captcha image, audio button, and form text input. + * + * Options can be specified to modify the output of the HTML. Accepted options: + * + * 'securimage_path': + * Optional: The URI to where securimage is installed (e.g. /securimage) + * 'show_image_url': + * Path to the securimage_show.php script (useful when integrating with a framework or moving outside the securimage directory) + * This will be passed as a urlencoded string to the <img> tag for outputting the captcha image + * 'audio_play_url': + * Same as show_image_url, except this indicates the URL of the audio playback script + * 'image_id': + * A string that sets the "id" attribute of the captcha image (default: captcha_image) + * 'image_alt_text': + * The alt text of the captcha image (default: CAPTCHA Image) + * 'show_audio_button': + * true/false Whether or not to show the audio button (default: true) + * 'disable_flash_fallback':) + * Allow only HTML5 audio and disable Flash fallback + * 'show_refresh_button': + * true/false Whether or not to show a button to refresh the image (default: true) + * 'audio_icon_url': + * URL to the image used for showing the HTML5 audio icon + * 'icon_size': + * Size (for both height & width) in pixels of the audio and refresh buttons + * 'show_text_input': + * true/false Whether or not to show the text input for the captcha (default: true) + * 'refresh_alt_text': + * Alt text for the refresh image (default: Refresh Image) + * 'refresh_title_text': + * Title text for the refresh image link (default: Refresh Image) + * 'input_id': + * A string that sets the "id" attribute of the captcha text input (default: captcha_code) + * 'input_name': + * A string that sets the "name" attribute of the captcha text input (default: same as input_id) + * 'input_text': + * A string that sets the text of the label for the captcha text input (default: Type the text:) + * 'input_attributes': + * An array of additional HTML tag attributes to pass to the text input tag (default: empty) + * 'image_attributes': + * An array of additional HTML tag attributes to pass to the captcha image tag (default: empty) + * 'error_html': + * Optional HTML markup to be shown above the text input field + * 'namespace': + * The optional captcha namespace to use for showing the image and playing back the audio. Namespaces are for using multiple captchas on the same page. + * + * @param array $options Array of options for modifying the HTML code. + * @param int $parts Securiage::HTML_* constant controlling what component of the captcha HTML to display + * + * @return string The generated HTML code for displaying the captcha + */ + public static function getCaptchaHtml($options = array(), $parts = Securimage::HTML_ALL) + { + static $javascript_init = false; + + if (!isset($options['securimage_path'])) { + $docroot = (isset($_SERVER['DOCUMENT_ROOT'])) ? $_SERVER['DOCUMENT_ROOT'] : substr($_SERVER['SCRIPT_FILENAME'], 0, -strlen($_SERVER['SCRIPT_NAME'])); + $docroot = realpath($docroot); + $sipath = dirname(__FILE__); + $securimage_path = str_replace($docroot, '', $sipath); + } else { + $securimage_path = $options['securimage_path']; + } + + $show_image_url = (isset($options['show_image_url'])) ? $options['show_image_url'] : null; + $image_id = (isset($options['image_id'])) ? $options['image_id'] : 'captcha_image'; + $image_alt = (isset($options['image_alt_text'])) ? $options['image_alt_text'] : 'CAPTCHA Image'; + $show_audio_btn = (isset($options['show_audio_button'])) ? (bool)$options['show_audio_button'] : true; + $disable_flash_fbk = (isset($options['disable_flash_fallback'])) ? (bool)$options['disable_flash_fallback'] : false; + $show_refresh_btn = (isset($options['show_refresh_button'])) ? (bool)$options['show_refresh_button'] : true; + $refresh_icon_url = (isset($options['refresh_icon_url'])) ? $options['refresh_icon_url'] : null; + $audio_but_bg_col = (isset($options['audio_button_bgcol'])) ? $options['audio_button_bgcol'] : '#ffffff'; + $audio_icon_url = (isset($options['audio_icon_url'])) ? $options['audio_icon_url'] : null; + $loading_icon_url = (isset($options['loading_icon_url'])) ? $options['loading_icon_url'] : null; + $icon_size = (isset($options['icon_size'])) ? $options['icon_size'] : 32; + $audio_play_url = (isset($options['audio_play_url'])) ? $options['audio_play_url'] : null; + $audio_swf_url = (isset($options['audio_swf_url'])) ? $options['audio_swf_url'] : null; + $show_input = (isset($options['show_text_input'])) ? (bool)$options['show_text_input'] : true; + $refresh_alt = (isset($options['refresh_alt_text'])) ? $options['refresh_alt_text'] : 'Refresh Image'; + $refresh_title = (isset($options['refresh_title_text'])) ? $options['refresh_title_text'] : 'Refresh Image'; + $input_text = (isset($options['input_text'])) ? $options['input_text'] : 'Type the text:'; + $input_id = (isset($options['input_id'])) ? $options['input_id'] : 'captcha_code'; + $input_name = (isset($options['input_name'])) ? $options['input_name'] : $input_id; + $input_attrs = (isset($options['input_attributes'])) ? $options['input_attributes'] : array(); + $image_attrs = (isset($options['image_attributes'])) ? $options['image_attributes'] : array(); + $error_html = (isset($options['error_html'])) ? $options['error_html'] : null; + $namespace = (isset($options['namespace'])) ? $options['namespace'] : ''; + + $rand = md5(uniqid($_SERVER['REMOTE_PORT'], true)); + $securimage_path = rtrim($securimage_path, '/\\'); + $securimage_path = str_replace('\\', '/', $securimage_path); + + $image_attr = ''; + if (!is_array($image_attrs)) $image_attrs = array(); + if (!isset($image_attrs['style'])) $image_attrs['style'] = 'float: left; padding-right: 5px'; + $image_attrs['id'] = $image_id; + + $show_path = $securimage_path . '/securimage_show.php?'; + if ($show_image_url) { + if (parse_url($show_image_url, PHP_URL_QUERY)) { + $show_path = "{$show_image_url}&"; + } else { + $show_path = "{$show_image_url}?"; + } + } + if (!empty($namespace)) { + $show_path .= sprintf('namespace=%s&', $namespace); + } + $image_attrs['src'] = $show_path . $rand; + + $image_attrs['alt'] = $image_alt; + + foreach($image_attrs as $name => $val) { + $image_attr .= sprintf('%s="%s" ', $name, htmlspecialchars($val)); + } + + $swf_path = $securimage_path . '/securimage_play.swf'; + $play_path = $securimage_path . '/securimage_play.php?'; + $icon_path = $securimage_path . '/images/audio_icon.png'; + $load_path = $securimage_path . '/images/loading.png'; + $js_path = $securimage_path . '/securimage.js'; + + if (!empty($audio_icon_url)) { + $icon_path = $audio_icon_url; + } + + if (!empty($loading_icon_url)) { + $load_path = $loading_icon_url; + } + + if (!empty($audio_play_url)) { + if (parse_url($audio_play_url, PHP_URL_QUERY)) { + $play_path = "{$audio_play_url}&"; + } else { + $play_path = "{$audio_play_url}?"; + } + } + + if (!empty($namespace)) { + $play_path .= sprintf('namespace=%s&', $namespace); + } + + if (!empty($audio_swf_url)) { + $swf_path = $audio_swf_url; + } + + $audio_obj = $image_id . '_audioObj'; + $html = ''; + + if ( ($parts & Securimage::HTML_IMG) > 0) { + $html .= sprintf('<img %s/>', $image_attr); + } + + if ( ($parts & Securimage::HTML_AUDIO) > 0 && $show_audio_btn) { + // html5 audio + $html .= sprintf('<div id="%s_audio_div">', $image_id) . "\n" . + sprintf('<audio id="%s_audio" preload="none" style="display: none">', $image_id) . "\n"; + + // check for existence and executability of LAME binary + // prefer mp3 over wav by sourcing it first, if available + if (is_executable(Securimage::$lame_binary_path)) { + $html .= sprintf('<source id="%s_source_mp3" src="%sid=%s&format=mp3" type="audio/mpeg">', $image_id, $play_path, uniqid()) . "\n"; + } + + // output wav source + $html .= sprintf('<source id="%s_source_wav" src="%sid=%s" type="audio/wav">', $image_id, $play_path, uniqid()) . "\n"; + + // flash audio button + if (!$disable_flash_fbk) { + $html .= sprintf('<object type="application/x-shockwave-flash" data="%s?bgcol=%s&icon_file=%s&audio_file=%s" height="%d" width="%d">', + htmlspecialchars($swf_path), + urlencode($audio_but_bg_col), + urlencode($icon_path), + urlencode(html_entity_decode($play_path)), + $icon_size, $icon_size + ); + + $html .= sprintf('<param name="movie" value="%s?bgcol=%s&icon_file=%s&audio_file=%s" />', + htmlspecialchars($swf_path), + urlencode($audio_but_bg_col), + urlencode($icon_path), + urlencode(html_entity_decode($play_path)) + ); + + $html .= '</object><br />'; + } + + // html5 audio close + $html .= "</audio>\n</div>\n"; + + // html5 audio controls + $html .= sprintf('<div id="%s_audio_controls">', $image_id) . "\n" . + sprintf('<a tabindex="-1" class="captcha_play_button" href="%sid=%s" onclick="return false">', + $play_path, uniqid() + ) . "\n" . + sprintf('<img class="captcha_play_image" height="%d" width="%d" src="%s" alt="Play CAPTCHA Audio" style="border: 0px">', $icon_size, $icon_size, htmlspecialchars($icon_path)) . "\n" . + sprintf('<img class="captcha_loading_image rotating" height="%d" width="%d" src="%s" alt="Loading audio" style="display: none">', $icon_size, $icon_size, htmlspecialchars($load_path)) . "\n" . + "</a>\n<noscript>Enable Javascript for audio controls</noscript>\n" . + "</div>\n"; + + // html5 javascript + if (!$javascript_init) { + $html .= sprintf('<script type="text/javascript" src="%s"></script>', $js_path) . "\n"; + $javascript_init = true; + } + $html .= '<script type="text/javascript">' . + "$audio_obj = new SecurimageAudio({ audioElement: '{$image_id}_audio', controlsElement: '{$image_id}_audio_controls' });" . + "</script>\n"; + } + + if ( ($parts & Securimage::HTML_ICON_REFRESH) > 0 && $show_refresh_btn) { + $icon_path = $securimage_path . '/images/refresh.png'; + if ($refresh_icon_url) { + $icon_path = $refresh_icon_url; + } + $img_tag = sprintf('<img height="%d" width="%d" src="%s" alt="%s" onclick="this.blur()" style="border: 0px; vertical-align: bottom" />', + $icon_size, $icon_size, htmlspecialchars($icon_path), htmlspecialchars($refresh_alt)); + + $html .= sprintf('<a tabindex="-1" style="border: 0" href="#" title="%s" onclick="%sdocument.getElementById(\'%s\').src = \'%s\' + Math.random(); this.blur(); return false">%s</a><br />', + htmlspecialchars($refresh_title), + ($audio_obj) ? "if (typeof window.{$audio_obj} !== 'undefined') {$audio_obj}.refresh(); " : '', + $image_id, + $show_path, + $img_tag + ); + } + + if ($parts == Securimage::HTML_ALL) { + $html .= '<div style="clear: both"></div>'; + } + + if ( ($parts & Securimage::HTML_INPUT_LABEL) > 0 && $show_input) { + $html .= sprintf('<label for="%s">%s</label> ', + htmlspecialchars($input_id), + htmlspecialchars($input_text)); + + if (!empty($error_html)) { + $html .= $error_html; + } + } + + if ( ($parts & Securimage::HTML_INPUT) > 0 && $show_input) { + $input_attr = ''; + if (!is_array($input_attrs)) $input_attrs = array(); + $input_attrs['type'] = 'text'; + $input_attrs['name'] = $input_name; + $input_attrs['id'] = $input_id; + + foreach($input_attrs as $name => $val) { + $input_attr .= sprintf('%s="%s" ', $name, htmlspecialchars($val)); + } + + $html .= sprintf('<input %s/>', $input_attr); + } + + return $html; + } + + /** + * Get the time in seconds that it took to solve the captcha. + * + * @return int The time in seconds from when the code was created, to when it was solved + */ + public function getTimeToSolve() + { + return $this->_timeToSolve; + } + + /** + * Set the namespace for the captcha being stored in the session or database. + * + * Namespaces are useful when multiple captchas need to be displayed on a single page. + * + * @param string $namespace Namespace value, String consisting of characters "a-zA-Z0-9_-" + */ + public function setNamespace($namespace) + { + $namespace = preg_replace('/[^a-z0-9-_]/i', '', $namespace); + $namespace = substr($namespace, 0, 64); + + if (!empty($namespace)) { + $this->namespace = $namespace; + } else { + $this->namespace = 'default'; + } + } + + /** + * Generate an audible captcha in WAV format and send it to the browser with appropriate headers. + * Example: + * + * $img = new Securimage(); + * $img->outputAudioFile(); // outputs a wav file to the browser + * exit; + * + * @param string $format + */ + public function outputAudioFile($format = null) + { + set_error_handler(array(&$this, 'errorHandler')); + + if (isset($_SERVER['HTTP_RANGE'])) { + $range = true; + $rangeId = (isset($_SERVER['HTTP_X_PLAYBACK_SESSION_ID'])) ? + 'ID' . $_SERVER['HTTP_X_PLAYBACK_SESSION_ID'] : + 'ID' . md5($_SERVER['REQUEST_URI']); + $uniq = $rangeId; + } else { + $uniq = md5(uniqid(microtime())); + } + + try { + if (!($audio = $this->getAudioData())) { + // if previously generated audio not found for current captcha + require_once dirname(__FILE__) . '/WavFile.php'; + $audio = $this->getAudibleCode(); + + if (strtolower($format) == 'mp3') { + $audio = $this->wavToMp3($audio); + } + + $this->saveAudioData($audio); + } + } catch (Exception $ex) { + if (($fp = @fopen(dirname(__FILE__) . '/si.error_log', 'a+')) !== false) { + fwrite($fp, date('Y-m-d H:i:s') . ': Securimage audio error "' . $ex->getMessage() . '"' . "\n"); + fclose($fp); + } + + $audio = $this->audioError(); + } + + if ($this->no_session != true) { + // close session to make it available to other requests in the event + // streaming the audio takes sevaral seconds or more + session_write_close(); + } + + if ($this->canSendHeaders() || $this->send_headers == false) { + if ($this->send_headers) { + if ($format == 'mp3') { + $ext = 'mp3'; + $type = 'audio/mpeg'; + } else { + $ext = 'wav'; + $type = 'audio/wav'; + } + + header('Accept-Ranges: bytes'); + header("Content-Disposition: attachment; filename=\"securimage_audio-{$uniq}.{$ext}\""); + header('Cache-Control: no-store, no-cache, must-revalidate'); + header('Expires: Sun, 1 Jan 2000 12:00:00 GMT'); + header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . 'GMT'); + header('Content-type: ' . $type); + } + + $this->rangeDownload($audio); + } else { + echo '<hr /><strong>' + .'Failed to generate audio file, content has already been ' + .'output.<br />This is most likely due to misconfiguration or ' + .'a PHP error was sent to the browser.</strong>'; + } + + restore_error_handler(); + + if (!$this->no_exit) exit; + } + + /** + * Output audio data with http range support. Typically this shouldn't be + * called directly unless being used with a custom implentation. Use + * Securimage::outputAudioFile instead. + * + * @param string $audio Raw wav or mp3 audio file content + */ + public function rangeDownload($audio) + { + /* Congratulations Firefox Android/Linux/Windows for being the most + * sensible browser of all when streaming HTML5 audio! + * + * Chrome on Android and iOS on iPad/iPhone both make extra HTTP requests + * for the audio whether on WiFi or the mobile network resulting in + * multiple downloads of the audio file and wasted bandwidth. + * + * If I'm doing something wrong in this code or anyone knows why, I'd + * love to hear from you. + */ + $audioLength = $size = strlen($audio); + + if (isset($_SERVER['HTTP_RANGE'])) { + list( , $range) = explode('=', $_SERVER['HTTP_RANGE']); // bytes=byte-range-set + $range = trim($range); + + if (strpos($range, ',') !== false) { + // eventually, we should handle requests with multiple ranges + // most likely these types of requests will never be sent + header('HTTP/1.1 416 Range Not Satisfiable'); + echo "<h1>Range Not Satisfiable</h1>"; + exit; + } else if (preg_match('/(\d+)-(\d+)/', $range, $match)) { + // bytes n - m + $range = array(intval($match[1]), intval($match[2])); + } else if (preg_match('/(\d+)-$/', $range, $match)) { + // bytes n - last byte of file + $range = array(intval($match[1]), null); + } else if (preg_match('/-(\d+)/', $range, $match)) { + // final n bytes of file + $range = array($size - intval($match[1]), $size - 1); + } + + if ($range[1] === null) $range[1] = $size - 1; + $length = $range[1] - $range[0] + 1; + $audio = substr($audio, $range[0], $length); + $audioLength = strlen($audio); + + header('HTTP/1.1 206 Partial Content'); + header("Content-Range: bytes {$range[0]}-{$range[1]}/{$size}"); + + if ($range[0] < 0 ||$range[1] >= $size || $range[0] >= $size || $range[0] > $range[1]) { + header('HTTP/1.1 416 Range Not Satisfiable'); + echo "<h1>Range Not Satisfiable</h1>"; + exit; + } + } + + header('Content-Length: ' . $audioLength); + + echo $audio; + } + + /** + * Return the code from the session or database (if configured). If none exists or was found, an empty string is returned. + * + * @param bool $array true to receive an array containing the code and properties, false to receive just the code. + * @param bool $returnExisting If true, and the class property *code* is set, it will be returned instead of getting the code from the session or database. + * @return array|string Return is an array if $array = true, otherwise a string containing the code + */ + public function getCode($array = false, $returnExisting = false) + { + $code = array(); + $time = 0; + $disp = 'error'; + + if ($returnExisting && strlen($this->code) > 0) { + if ($array) { + return array( + 'code' => $this->code, + 'display' => $this->code_display, + 'code_display' => $this->code_display, + 'time' => 0); + } else { + return $this->code; + } + } + + if ($this->no_session != true) { + if (isset($_SESSION['securimage_code_value'][$this->namespace]) && + trim($_SESSION['securimage_code_value'][$this->namespace]) != '') { + if ($this->isCodeExpired( + $_SESSION['securimage_code_ctime'][$this->namespace]) == false) { + $code['code'] = $_SESSION['securimage_code_value'][$this->namespace]; + $code['time'] = $_SESSION['securimage_code_ctime'][$this->namespace]; + $code['display'] = $_SESSION['securimage_code_disp'] [$this->namespace]; + } + } + } + + if (empty($code) && $this->use_database) { + // no code in session - may mean user has cookies turned off + $this->openDatabase(); + $code = $this->getCodeFromDatabase(); + + if (!empty($code)) { + $code['display'] = $code['code_disp']; + unset($code['code_disp']); + } + } else { /* no code stored in session or sqlite database, validation will fail */ } + + if ($array == true) { + return $code; + } else { + return $code['code']; + } + } + + /** + * The main image drawing routing, responsible for constructing the entire image and serving it + */ + protected function doImage() + { + if( ($this->use_transparent_text == true || $this->bgimg != '') && function_exists('imagecreatetruecolor')) { + $imagecreate = 'imagecreatetruecolor'; + } else { + $imagecreate = 'imagecreate'; + } + + $this->im = $imagecreate($this->image_width, $this->image_height); + $this->tmpimg = $imagecreate($this->image_width * $this->iscale, $this->image_height * $this->iscale); + + $this->allocateColors(); + imagepalettecopy($this->tmpimg, $this->im); + + $this->setBackground(); + + $code = ''; + + if ($this->getCaptchaId(false) !== null) { + // a captcha Id was supplied + + // check to see if a display_value for the captcha image was set + if (is_string($this->display_value) && strlen($this->display_value) > 0) { + $this->code_display = $this->display_value; + $this->code = ($this->case_sensitive) ? + $this->display_value : + strtolower($this->display_value); + $code = $this->code; + } else if ($this->openDatabase()) { + // no display_value, check the database for existing captchaId + $code = $this->getCodeFromDatabase(); + + // got back a result from the database with a valid code for captchaId + if (is_array($code)) { + $this->code = $code['code']; + $this->code_display = $code['code_disp']; + $code = $code['code']; + } + } + } + + if ($code == '') { + // if the code was not set using display_value or was not found in + // the database, create a new code + $this->createCode(); + } + + if ($this->noise_level > 0) { + $this->drawNoise(); + } + + $this->drawWord(); + + if ($this->perturbation > 0 && is_readable($this->ttf_file)) { + $this->distortedCopy(); + } + + if ($this->num_lines > 0) { + $this->drawLines(); + } + + if (trim($this->image_signature) != '') { + $this->addSignature(); + } + + $this->output(); + } + + /** + * Allocate the colors to be used for the image + */ + protected function allocateColors() + { + // allocate bg color first for imagecreate + $this->gdbgcolor = imagecolorallocate($this->im, + $this->image_bg_color->r, + $this->image_bg_color->g, + $this->image_bg_color->b); + + $alpha = intval($this->text_transparency_percentage / 100 * 127); + + if ($this->use_transparent_text == true) { + $this->gdtextcolor = imagecolorallocatealpha($this->im, + $this->text_color->r, + $this->text_color->g, + $this->text_color->b, + $alpha); + $this->gdlinecolor = imagecolorallocatealpha($this->im, + $this->line_color->r, + $this->line_color->g, + $this->line_color->b, + $alpha); + $this->gdnoisecolor = imagecolorallocatealpha($this->im, + $this->noise_color->r, + $this->noise_color->g, + $this->noise_color->b, + $alpha); + } else { + $this->gdtextcolor = imagecolorallocate($this->im, + $this->text_color->r, + $this->text_color->g, + $this->text_color->b); + $this->gdlinecolor = imagecolorallocate($this->im, + $this->line_color->r, + $this->line_color->g, + $this->line_color->b); + $this->gdnoisecolor = imagecolorallocate($this->im, + $this->noise_color->r, + $this->noise_color->g, + $this->noise_color->b); + } + + $this->gdsignaturecolor = imagecolorallocate($this->im, + $this->signature_color->r, + $this->signature_color->g, + $this->signature_color->b); + + } + + /** + * The the background color, or background image to be used + */ + protected function setBackground() + { + // set background color of image by drawing a rectangle since imagecreatetruecolor doesn't set a bg color + imagefilledrectangle($this->im, 0, 0, + $this->image_width, $this->image_height, + $this->gdbgcolor); + imagefilledrectangle($this->tmpimg, 0, 0, + $this->image_width * $this->iscale, $this->image_height * $this->iscale, + $this->gdbgcolor); + + if ($this->bgimg == '') { + if ($this->background_directory != null && + is_dir($this->background_directory) && + is_readable($this->background_directory)) + { + $img = $this->getBackgroundFromDirectory(); + if ($img != false) { + $this->bgimg = $img; + } + } + } + + if ($this->bgimg == '') { + return; + } + + $dat = @getimagesize($this->bgimg); + if($dat == false) { + return; + } + + switch($dat[2]) { + case 1: $newim = @imagecreatefromgif($this->bgimg); break; + case 2: $newim = @imagecreatefromjpeg($this->bgimg); break; + case 3: $newim = @imagecreatefrompng($this->bgimg); break; + default: return; + } + + if(!$newim) return; + + imagecopyresized($this->im, $newim, 0, 0, 0, 0, + $this->image_width, $this->image_height, + imagesx($newim), imagesy($newim)); + } + + /** + * Scan the directory for a background image to use + * @return string|bool + */ + protected function getBackgroundFromDirectory() + { + $images = array(); + + if ( ($dh = opendir($this->background_directory)) !== false) { + while (($file = readdir($dh)) !== false) { + if (preg_match('/(jpg|gif|png)$/i', $file)) $images[] = $file; + } + + closedir($dh); + + if (sizeof($images) > 0) { + return rtrim($this->background_directory, '/') . '/' . $images[mt_rand(0, sizeof($images)-1)]; + } + } + + return false; + } + + /** + * This method generates a new captcha code. + * + * Generates a random captcha code based on *charset*, math problem, or captcha from the wordlist and saves the value to the session and/or database. + */ + public function createCode() + { + $this->code = false; + + switch($this->captcha_type) { + case self::SI_CAPTCHA_MATHEMATIC: + { + do { + $signs = array('+', '-', 'x'); + $left = mt_rand(1, 10); + $right = mt_rand(1, 5); + $sign = $signs[mt_rand(0, 2)]; + + switch($sign) { + case 'x': $c = $left * $right; break; + case '-': $c = $left - $right; break; + default: $c = $left + $right; break; + } + } while ($c <= 0); // no negative #'s or 0 + + $this->code = "$c"; + $this->code_display = "$left $sign $right"; + break; + } + + case self::SI_CAPTCHA_WORDS: + $words = $this->readCodeFromFile(2); + $this->code = implode(' ', $words); + $this->code_display = $this->code; + break; + + default: + { + if ($this->use_wordlist && is_readable($this->wordlist_file)) { + $this->code = $this->readCodeFromFile(); + } + + if ($this->code == false) { + $this->code = $this->generateCode($this->code_length); + } + + $this->code_display = $this->code; + $this->code = ($this->case_sensitive) ? $this->code : strtolower($this->code); + } // default + } + + $this->saveData(); + } + + /** + * Draws the captcha code on the image + */ + protected function drawWord() + { + $width2 = $this->image_width * $this->iscale; + $height2 = $this->image_height * $this->iscale; + $ratio = ($this->font_ratio) ? $this->font_ratio : 0.4; + + if ((float)$ratio < 0.1 || (float)$ratio >= 1) { + $ratio = 0.4; + } + + if (!is_readable($this->ttf_file)) { + imagestring($this->im, 4, 10, ($this->image_height / 2) - 5, 'Failed to load TTF font file!', $this->gdtextcolor); + } else { + if ($this->perturbation > 0) { + $font_size = $height2 * $ratio; + $bb = imageftbbox($font_size, 0, $this->ttf_file, $this->code_display); + $tx = $bb[4] - $bb[0]; + $ty = $bb[5] - $bb[1]; + $x = floor($width2 / 2 - $tx / 2 - $bb[0]); + $y = round($height2 / 2 - $ty / 2 - $bb[1]); + + imagettftext($this->tmpimg, $font_size, 0, (int)$x, (int)$y, $this->gdtextcolor, $this->ttf_file, $this->code_display); + } else { + $font_size = $this->image_height * $ratio; + $bb = imageftbbox($font_size, 0, $this->ttf_file, $this->code_display); + $tx = $bb[4] - $bb[0]; + $ty = $bb[5] - $bb[1]; + $x = floor($this->image_width / 2 - $tx / 2 - $bb[0]); + $y = round($this->image_height / 2 - $ty / 2 - $bb[1]); + + imagettftext($this->im, $font_size, 0, (int)$x, (int)$y, $this->gdtextcolor, $this->ttf_file, $this->code_display); + } + } + + // DEBUG + //$this->im = $this->tmpimg; + //$this->output(); + + } + + /** + * Copies the captcha image to the final image with distortion applied + */ + protected function distortedCopy() + { + $numpoles = 3; // distortion factor + // make array of poles AKA attractor points + for ($i = 0; $i < $numpoles; ++ $i) { + $px[$i] = mt_rand($this->image_width * 0.2, $this->image_width * 0.8); + $py[$i] = mt_rand($this->image_height * 0.2, $this->image_height * 0.8); + $rad[$i] = mt_rand($this->image_height * 0.2, $this->image_height * 0.8); + $tmp = ((- $this->frand()) * 0.15) - .15; + $amp[$i] = $this->perturbation * $tmp; + } + + $bgCol = imagecolorat($this->tmpimg, 0, 0); + $width2 = $this->iscale * $this->image_width; + $height2 = $this->iscale * $this->image_height; + imagepalettecopy($this->im, $this->tmpimg); // copy palette to final image so text colors come across + // loop over $img pixels, take pixels from $tmpimg with distortion field + for ($ix = 0; $ix < $this->image_width; ++ $ix) { + for ($iy = 0; $iy < $this->image_height; ++ $iy) { + $x = $ix; + $y = $iy; + for ($i = 0; $i < $numpoles; ++ $i) { + $dx = $ix - $px[$i]; + $dy = $iy - $py[$i]; + if ($dx == 0 && $dy == 0) { + continue; + } + $r = sqrt($dx * $dx + $dy * $dy); + if ($r > $rad[$i]) { + continue; + } + $rscale = $amp[$i] * sin(3.14 * $r / $rad[$i]); + $x += $dx * $rscale; + $y += $dy * $rscale; + } + $c = $bgCol; + $x *= $this->iscale; + $y *= $this->iscale; + if ($x >= 0 && $x < $width2 && $y >= 0 && $y < $height2) { + $c = imagecolorat($this->tmpimg, $x, $y); + } + if ($c != $bgCol) { // only copy pixels of letters to preserve any background image + imagesetpixel($this->im, $ix, $iy, $c); + } + } + } + } + + /** + * Draws distorted lines on the image + */ + protected function drawLines() + { + for ($line = 0; $line < $this->num_lines; ++ $line) { + $x = $this->image_width * (1 + $line) / ($this->num_lines + 1); + $x += (0.5 - $this->frand()) * $this->image_width / $this->num_lines; + $y = mt_rand($this->image_height * 0.1, $this->image_height * 0.9); + + $theta = ($this->frand() - 0.5) * M_PI * 0.7; + $w = $this->image_width; + $len = mt_rand($w * 0.4, $w * 0.7); + $lwid = mt_rand(0, 2); + + $k = $this->frand() * 0.6 + 0.2; + $k = $k * $k * 0.5; + $phi = $this->frand() * 6.28; + $step = 0.5; + $dx = $step * cos($theta); + $dy = $step * sin($theta); + $n = $len / $step; + $amp = 1.5 * $this->frand() / ($k + 5.0 / $len); + $x0 = $x - 0.5 * $len * cos($theta); + $y0 = $y - 0.5 * $len * sin($theta); + + $ldx = round(- $dy * $lwid); + $ldy = round($dx * $lwid); + + for ($i = 0; $i < $n; ++ $i) { + $x = $x0 + $i * $dx + $amp * $dy * sin($k * $i * $step + $phi); + $y = $y0 + $i * $dy - $amp * $dx * sin($k * $i * $step + $phi); + imagefilledrectangle($this->im, $x, $y, $x + $lwid, $y + $lwid, $this->gdlinecolor); + } + } + } + + /** + * Draws random noise on the image + */ + protected function drawNoise() + { + if ($this->noise_level > 10) { + $noise_level = 10; + } else { + $noise_level = $this->noise_level; + } + + $t0 = microtime(true); + + $noise_level *= 125; // an arbitrary number that works well on a 1-10 scale + + $points = $this->image_width * $this->image_height * $this->iscale; + $height = $this->image_height * $this->iscale; + $width = $this->image_width * $this->iscale; + for ($i = 0; $i < $noise_level; ++$i) { + $x = mt_rand(10, $width); + $y = mt_rand(10, $height); + $size = mt_rand(7, 10); + if ($x - $size <= 0 && $y - $size <= 0) continue; // dont cover 0,0 since it is used by imagedistortedcopy + imagefilledarc($this->tmpimg, $x, $y, $size, $size, 0, 360, $this->gdnoisecolor, IMG_ARC_PIE); + } + + $t1 = microtime(true); + + $t = $t1 - $t0; + + /* + // DEBUG + imagestring($this->tmpimg, 5, 25, 30, "$t", $this->gdnoisecolor); + header('content-type: image/png'); + imagepng($this->tmpimg); + exit; + */ + } + + /** + * Print signature text on image + */ + protected function addSignature() + { + $bbox = imagettfbbox(10, 0, $this->signature_font, $this->image_signature); + $textlen = $bbox[2] - $bbox[0]; + $x = $this->image_width - $textlen - 5; + $y = $this->image_height - 3; + + imagettftext($this->im, 10, 0, $x, $y, $this->gdsignaturecolor, $this->signature_font, $this->image_signature); + } + + /** + * Sends the appropriate image and cache headers and outputs image to the browser + */ + protected function output() + { + if ($this->canSendHeaders() || $this->send_headers == false) { + if ($this->send_headers) { + // only send the content-type headers if no headers have been output + // this will ease debugging on misconfigured servers where warnings + // may have been output which break the image and prevent easily viewing + // source to see the error. + header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); + header("Last-Modified: " . gmdate("D, d M Y H:i:s") . "GMT"); + header("Cache-Control: no-store, no-cache, must-revalidate"); + header("Cache-Control: post-check=0, pre-check=0", false); + header("Pragma: no-cache"); + } + + switch ($this->image_type) { + case self::SI_IMAGE_JPEG: + if ($this->send_headers) header("Content-Type: image/jpeg"); + imagejpeg($this->im, null, 90); + break; + case self::SI_IMAGE_GIF: + if ($this->send_headers) header("Content-Type: image/gif"); + imagegif($this->im); + break; + default: + if ($this->send_headers) header("Content-Type: image/png"); + imagepng($this->im); + break; + } + } else { + echo '<hr /><strong>' + .'Failed to generate captcha image, content has already been ' + .'output.<br />This is most likely due to misconfiguration or ' + .'a PHP error was sent to the browser.</strong>'; + } + + imagedestroy($this->im); + restore_error_handler(); + + if (!$this->no_exit) exit; + } + + /** + * Generates an audio captcha in WAV format + * + * @return string The audio representation of the captcha in Wav format + */ + protected function getAudibleCode() + { + $letters = array(); + $code = $this->getCode(true, true); + + if (empty($code) || $code['code'] == '') { + if (strlen($this->display_value) > 0) { + $code = array('code' => $this->display_value, 'display' => $this->display_value); + } else { + $this->createCode(); + $code = $this->getCode(true); + } + } + + if (empty($code)) { + $error = 'Failed to get audible code (are database settings correct?). Check the error log for details'; + trigger_error($error, E_USER_WARNING); + throw new Exception($error); + } + + if (preg_match('/(\d+) (\+|-|x) (\d+)/i', $code['display'], $eq)) { + $math = true; + + $left = $eq[1]; + $sign = str_replace(array('+', '-', 'x'), array('plus', 'minus', 'times'), $eq[2]); + $right = $eq[3]; + + $letters = array($left, $sign, $right); + } else { + $math = false; + + $length = strlen($code['display']); + + for($i = 0; $i < $length; ++$i) { + $letter = $code['display']{$i}; + $letters[] = $letter; + } + } + + try { + return $this->generateWAV($letters); + } catch(Exception $ex) { + throw $ex; + } + } + + /** + * Gets a captcha code from a file containing a list of words. + * + * Seek to a random offset in the file and reads a block of data and returns a line from the file. + * + * @param int $numWords Number of words (lines) to read from the file + * @return string|array|bool Returns a string if only one word is to be read, or an array of words + */ + protected function readCodeFromFile($numWords = 1) + { + $strpos_func = 'strpos'; + $strlen_func = 'strlen'; + $substr_func = 'substr'; + $strtolower_func = 'strtolower'; + $mb_support = false; + + if (!empty($this->wordlist_file_encoding)) { + if (!extension_loaded('mbstring')) { + trigger_error("wordlist_file_encoding option set, but PHP does not have mbstring support", E_USER_WARNING); + return false; + } + + // emits PHP warning if not supported + $mb_support = mb_internal_encoding($this->wordlist_file_encoding); + + if (!$mb_support) { + return false; + } + + $strpos_func = 'mb_strpos'; + $strlen_func = 'mb_strlen'; + $substr_func = 'mb_substr'; + $strtolower_func = 'mb_strtolower'; + } + + $fp = fopen($this->wordlist_file, 'rb'); + if (!$fp) return false; + + $fsize = filesize($this->wordlist_file); + if ($fsize < 128) return false; // too small of a list to be effective + + if ((int)$numWords < 1 || (int)$numWords > 5) $numWords = 1; + + $words = array(); + $i = 0; + do { + fseek($fp, mt_rand(0, $fsize - 128), SEEK_SET); // seek to a random position of file from 0 to filesize-128 + $data = fread($fp, 128); // read a chunk from our random position + + if ($mb_support !== false) { + $data = mb_ereg_replace("\r?\n", "\n", $data); + } else { + $data = preg_replace("/\r?\n/", "\n", $data); + } + + $start = @$strpos_func($data, "\n", mt_rand(0, 56)) + 1; // random start position + $end = @$strpos_func($data, "\n", $start); // find end of word + + if ($start === false) { + // picked start position at end of file + continue; + } else if ($end === false) { + $end = $strlen_func($data); + } + + $word = $strtolower_func($substr_func($data, $start, $end - $start)); // return a line of the file + + if ($mb_support) { + // convert to UTF-8 for imagettftext + $word = mb_convert_encoding($word, 'UTF-8', $this->wordlist_file_encoding); + } + + $words[] = $word; + } while (++$i < $numWords); + + fclose($fp); + + if ($numWords < 2) { + return $words[0]; + } else { + return $words; + } + } + + /** + * Generates a random captcha code from the set character set + * + * @see Securimage::$charset Charset option + * @return string A randomly generated CAPTCHA code + */ + protected function generateCode() + { + $code = ''; + + if (function_exists('mb_strlen')) { + for($i = 1, $cslen = mb_strlen($this->charset, 'UTF-8'); $i <= $this->code_length; ++$i) { + $code .= mb_substr($this->charset, mt_rand(0, $cslen - 1), 1, 'UTF-8'); + } + } else { + for($i = 1, $cslen = strlen($this->charset); $i <= $this->code_length; ++$i) { + $code .= substr($this->charset, mt_rand(0, $cslen - 1), 1); + } + } + + return $code; + } + + /** + * Validate a code supplied by the user + * + * Checks the entered code against the value stored in the session and/or database (if configured). Handles case sensitivity. + * Also removes the code from session/database if the code was entered correctly to prevent re-use attack. + * + * This function does not return a value. + * + * @see Securimage::$correct_code 'correct_code' property + */ + protected function validate() + { + if (!is_string($this->code) || strlen($this->code) == 0) { + $code = $this->getCode(true); + // returns stored code, or an empty string if no stored code was found + // checks the session and database if enabled + } else { + $code = $this->code; + } + + if (is_array($code)) { + if (!empty($code)) { + $ctime = $code['time']; + $code = $code['code']; + + $this->_timeToSolve = time() - $ctime; + } else { + $code = ''; + } + } + + if ($this->case_sensitive == false && preg_match('/[A-Z]/', $code)) { + // case sensitive was set from securimage_show.php but not in class + // the code saved in the session has capitals so set case sensitive to true + $this->case_sensitive = true; + } + + $code_entered = trim( (($this->case_sensitive) ? $this->code_entered + : strtolower($this->code_entered)) + ); + $this->correct_code = false; + + if ($code != '') { + if (strpos($code, ' ') !== false) { + // for multi word captchas, remove more than once space from input + $code_entered = preg_replace('/\s+/', ' ', $code_entered); + $code_entered = strtolower($code_entered); + } + + if ((string)$code === (string)$code_entered) { + $this->correct_code = true; + if ($this->no_session != true) { + $_SESSION['securimage_code_disp'] [$this->namespace] = ''; + $_SESSION['securimage_code_value'][$this->namespace] = ''; + $_SESSION['securimage_code_ctime'][$this->namespace] = ''; + $_SESSION['securimage_code_audio'][$this->namespace] = ''; + } + $this->clearCodeFromDatabase(); + } + } + } + + /** + * Save CAPTCHA data to session and database (if configured) + */ + protected function saveData() + { + if ($this->no_session != true) { + if (isset($_SESSION['securimage_code_value']) && is_scalar($_SESSION['securimage_code_value'])) { + // fix for migration from v2 - v3 + unset($_SESSION['securimage_code_value']); + unset($_SESSION['securimage_code_ctime']); + } + + $_SESSION['securimage_code_disp'] [$this->namespace] = $this->code_display; + $_SESSION['securimage_code_value'][$this->namespace] = $this->code; + $_SESSION['securimage_code_ctime'][$this->namespace] = time(); + $_SESSION['securimage_code_audio'][$this->namespace] = null; // clear previous audio, if set + } + + if ($this->use_database) { + $this->saveCodeToDatabase(); + } + } + + /** + * Save audio data to session and/or the configured database + * + * @param string $data The CAPTCHA audio data + */ + protected function saveAudioData($data) + { + if ($this->no_session != true) { + $_SESSION['securimage_code_audio'][$this->namespace] = $data; + } + + if ($this->use_database) { + $this->saveAudioToDatabase($data); + } + } + + /** + * Gets audio file contents from the session or database + * + * @return string|boolean Audio contents on success, or false if no audio found in session or DB + */ + protected function getAudioData() + { + if ($this->no_session != true) { + if (isset($_SESSION['securimage_code_audio'][$this->namespace])) { + return $_SESSION['securimage_code_audio'][$this->namespace]; + } + } + + if ($this->use_database) { + $this->openDatabase(); + $code = $this->getCodeFromDatabase(); + + if (!empty($code['audio_data'])) { + return $code['audio_data']; + } + } + + return false; + } + + /** + * Saves the CAPTCHA data to the configured database. + */ + protected function saveCodeToDatabase() + { + $success = false; + $this->openDatabase(); + + if ($this->use_database && $this->pdo_conn) { + $id = $this->getCaptchaId(false); + $ip = $_SERVER['REMOTE_ADDR']; + + if (empty($id)) { + $id = $ip; + } + + $time = time(); + $code = $this->code; + $code_disp = $this->code_display; + + // This is somewhat expensive in PDO Sqlite3 (when there is something to delete) + // Clears previous captcha for this client from database so we can do a straight insert + // without having to do INSERT ... ON DUPLICATE KEY or a find/update + $this->clearCodeFromDatabase(); + + $query = "INSERT INTO {$this->database_table} (" + ."id, code, code_display, namespace, created) " + ."VALUES(?, ?, ?, ?, ?)"; + + $stmt = $this->pdo_conn->prepare($query); + $success = $stmt->execute(array($id, $code, $code_disp, $this->namespace, $time)); + + if (!$success) { + $err = $stmt->errorInfo(); + $error = "Failed to insert code into database. {$err[1]}: {$err[2]}."; + + if ($this->database_driver == self::SI_DRIVER_SQLITE3) { + $err14 = ($err[1] == 14); + if ($err14) $error .= sprintf(" Ensure database directory and file are writeable by user '%s' (%d).", + get_current_user(), getmyuid()); + } + + trigger_error($error, E_USER_WARNING); + } + } + + return $success !== false; + } + + /** + * Saves CAPTCHA audio to the configured database + * + * @param string $data Audio data + * @return boolean true on success, false on failure + */ + protected function saveAudioToDatabase($data) + { + $success = false; + $this->openDatabase(); + + if ($this->use_database && $this->pdo_conn) { + $id = $this->getCaptchaId(false); + $ip = $_SERVER['REMOTE_ADDR']; + $ns = $this->namespace; + + if (empty($id)) { + $id = $ip; + } + + $query = "UPDATE {$this->database_table} SET audio_data = :audioData WHERE id = :id AND namespace = :namespace"; + $stmt = $this->pdo_conn->prepare($query); + $stmt->bindParam(':audioData', $data, PDO::PARAM_LOB); + $stmt->bindParam(':id', $id); + $stmt->bindParam(':namespace', $ns); + $success = $stmt->execute(); + } + + return $success !== false; + } + + /** + * Opens a connection to the configured database. + * + * @see Securimage::$use_database Use database + * @see Securimage::$database_driver Database driver + * @see Securimage::$pdo_conn pdo_conn + * @return bool true if the database connection was successful, false if not + */ + protected function openDatabase() + { + $this->pdo_conn = false; + + if ($this->use_database) { + $pdo_extension = 'PDO_' . strtoupper($this->database_driver); + + if (!extension_loaded($pdo_extension)) { + trigger_error("Database support is turned on in Securimage, but the chosen extension $pdo_extension is not loaded in PHP.", E_USER_WARNING); + return false; + } + } + + if ($this->database_driver == self::SI_DRIVER_SQLITE3) { + if (!file_exists($this->database_file)) { + $fp = fopen($this->database_file, 'w+'); + if (!$fp) { + $err = error_get_last(); + trigger_error("Securimage failed to create SQLite3 database file '{$this->database_file}'. Reason: {$err['message']}", E_USER_WARNING); + return false; + } + fclose($fp); + chmod($this->database_file, 0666); + } else if (!is_writeable($this->database_file)) { + trigger_error("Securimage does not have read/write access to database file '{$this->database_file}. Make sure permissions are 0666 and writeable by user '" . get_current_user() . "'", E_USER_WARNING); + return false; + } + } + + try { + $dsn = $this->getDsn(); + + $options = array(); + $this->pdo_conn = new PDO($dsn, $this->database_user, $this->database_pass, $options); + } catch (PDOException $pdoex) { + trigger_error("Database connection failed: " . $pdoex->getMessage(), E_USER_WARNING); + return false; + } catch (Exception $ex) { + trigger_error($ex->getMessage(), E_USER_WARNING); + return false; + } + + try { + if (!$this->skip_table_check && !$this->checkTablesExist()) { + // create tables... + $this->createDatabaseTables(); + } + } catch (Exception $ex) { + trigger_error($ex->getMessage(), E_USER_WARNING); + $this->pdo_conn = false; + return false; + } + + if (mt_rand(0, 100) / 100.0 == 1.0) { + $this->purgeOldCodesFromDatabase(); + } + + return $this->pdo_conn; + } + + /** + * Get the PDO DSN string for connecting to the database + * + * @see Securimage::$database_driver Database driver + * @throws Exception If database specific options are not configured + * @return string The DSN for connecting to the database + */ + protected function getDsn() + { + $dsn = sprintf('%s:', $this->database_driver); + + switch($this->database_driver) { + case self::SI_DRIVER_SQLITE3: + $dsn .= $this->database_file; + break; + + case self::SI_DRIVER_MYSQL: + case self::SI_DRIVER_PGSQL: + if (empty($this->database_host)) { + throw new Exception('Securimage::database_host is not set'); + } else if (empty($this->database_name)) { + throw new Exception('Securimage::database_name is not set'); + } + + $dsn .= sprintf('host=%s;dbname=%s', + $this->database_host, + $this->database_name); + break; + + } + + return $dsn; + } + + /** + * Checks if the necessary database tables for storing captcha codes exist + * + * @throws Exception If the table check failed for some reason + * @return boolean true if the database do exist, false if not + */ + protected function checkTablesExist() + { + $table = $this->pdo_conn->quote($this->database_table); + + switch($this->database_driver) { + case self::SI_DRIVER_SQLITE3: + // query row count for sqlite, PRAGMA queries seem to return no + // rowCount using PDO even if there are rows returned + $query = "SELECT COUNT(id) FROM $table"; + break; + + case self::SI_DRIVER_MYSQL: + $query = "SHOW TABLES LIKE $table"; + break; + + case self::SI_DRIVER_PGSQL: + $query = "SELECT * FROM information_schema.columns WHERE table_name = $table;"; + break; + } + + $result = $this->pdo_conn->query($query); + + if (!$result) { + $err = $this->pdo_conn->errorInfo(); + + if ($this->database_driver == self::SI_DRIVER_SQLITE3 && + $err[1] === 1 && strpos($err[2], 'no such table') !== false) + { + return false; + } + + throw new Exception("Failed to check tables: {$err[0]} - {$err[1]}: {$err[2]}"); + } else if ($this->database_driver == self::SI_DRIVER_SQLITE3) { + // successful here regardless of row count for sqlite + return true; + } else if ($result->rowCount() == 0) { + return false; + } else { + return true; + } + } + + /** + * Create the necessary databaes table for storing captcha codes. + * + * Based on the database adapter used, the tables will created in the existing connection. + * + * @see Securimage::$database_driver Database driver + * @return boolean true if the tables were created, false if not + */ + protected function createDatabaseTables() + { + $queries = array(); + + switch($this->database_driver) { + case self::SI_DRIVER_SQLITE3: + $queries[] = "CREATE TABLE \"{$this->database_table}\" ( + id VARCHAR(40), + namespace VARCHAR(32) NOT NULL, + code VARCHAR(32) NOT NULL, + code_display VARCHAR(32) NOT NULL, + created INTEGER NOT NULL, + audio_data BLOB NULL, + PRIMARY KEY(id, namespace) + )"; + + $queries[] = "CREATE INDEX ndx_created ON {$this->database_table} (created)"; + break; + + case self::SI_DRIVER_MYSQL: + $queries[] = "CREATE TABLE `{$this->database_table}` ( + `id` VARCHAR(40) NOT NULL, + `namespace` VARCHAR(32) NOT NULL, + `code` VARCHAR(32) NOT NULL, + `code_display` VARCHAR(32) NOT NULL, + `created` INT NOT NULL, + `audio_data` MEDIUMBLOB NULL, + PRIMARY KEY(id, namespace), + INDEX(created) + )"; + break; + + case self::SI_DRIVER_PGSQL: + $queries[] = "CREATE TABLE {$this->database_table} ( + id character varying(40) NOT NULL, + namespace character varying(32) NOT NULL, + code character varying(32) NOT NULL, + code_display character varying(32) NOT NULL, + created integer NOT NULL, + audio_data bytea NULL, + CONSTRAINT pkey_id_namespace PRIMARY KEY (id, namespace) + )"; + + $queries[] = "CREATE INDEX ndx_created ON {$this->database_table} (created);"; + break; + } + + $this->pdo_conn->beginTransaction(); + + foreach($queries as $query) { + $result = $this->pdo_conn->query($query); + + if (!$result) { + $err = $this->pdo_conn->errorInfo(); + trigger_error("Failed to create table. {$err[1]}: {$err[2]}", E_USER_WARNING); + $this->pdo_conn->rollBack(); + $this->pdo_conn = false; + return false; + } + } + + $this->pdo_conn->commit(); + + return true; + } + + /** + * Retrieves a stored code from the database for based on the captchaId or + * IP address if captcha ID not used. + * + * @return string|array Empty string if no code was found or has expired, + * otherwise returns array of code information. + */ + protected function getCodeFromDatabase() + { + $code = ''; + + if ($this->use_database == true && $this->pdo_conn) { + if (Securimage::$_captchaId !== null) { + $query = "SELECT * FROM {$this->database_table} WHERE id = ?"; + $stmt = $this->pdo_conn->prepare($query); + $result = $stmt->execute(array(Securimage::$_captchaId)); + } else { + $ip = $_SERVER['REMOTE_ADDR']; + $ns = $this->namespace; + + // ip is stored in id column when no captchaId + $query = "SELECT * FROM {$this->database_table} WHERE id = ? AND namespace = ?"; + $stmt = $this->pdo_conn->prepare($query); + $result = $stmt->execute(array($ip, $ns)); + } + + if (!$result) { + $err = $this->pdo_conn->errorInfo(); + trigger_error("Failed to select code from database. {$err[0]}: {$err[1]}", E_USER_WARNING); + } else { + if ( ($row = $stmt->fetch()) !== false ) { + if (false == $this->isCodeExpired($row['created'])) { + if ($this->database_driver == self::SI_DRIVER_PGSQL && is_resource($row['audio_data'])) { + // pg bytea data returned as stream resource + $data = ''; + while (!feof($row['audio_data'])) { + $data .= fgets($row['audio_data']); + } + $row['audio_data'] = $data; + } + $code = array( + 'code' => $row['code'], + 'code_disp' => $row['code_display'], + 'time' => $row['created'], + 'audio_data' => $row['audio_data'], + ); + } + } + } + } + + return $code; + } + + /** + * Remove a stored code from the database based on captchaId or IP address. + */ + protected function clearCodeFromDatabase() + { + if ($this->pdo_conn) { + $ip = $_SERVER['REMOTE_ADDR']; + $ns = $this->pdo_conn->quote($this->namespace); + $id = Securimage::$_captchaId; + + if (empty($id)) { + $id = $ip; // if no captchaId set, IP address is captchaId. + } + + $id = $this->pdo_conn->quote($id); + + $query = sprintf("DELETE FROM %s WHERE id = %s AND namespace = %s", + $this->database_table, $id, $ns); + + $result = $this->pdo_conn->query($query); + if (!$result) { + trigger_error("Failed to delete code from database.", E_USER_WARNING); + } + } + } + + /** + * Deletes old (expired) codes from the database + */ + protected function purgeOldCodesFromDatabase() + { + if ($this->use_database && $this->pdo_conn) { + $now = time(); + $limit = (!is_numeric($this->expiry_time) || $this->expiry_time < 1) ? 86400 : $this->expiry_time; + + $query = sprintf("DELETE FROM %s WHERE %s - created > %s", + $this->database_table, + $now, + $this->pdo_conn->quote("$limit", PDO::PARAM_INT)); + + $result = $this->pdo_conn->query($query); + } + } + + /** + * Checks to see if the captcha code has expired and can no longer be used. + * + * @see Securimage::$expiry_time expiry_time + * @param int $creation_time The Unix timestamp of when the captcha code was created + * @return bool true if the code is expired, false if it is still valid + */ + protected function isCodeExpired($creation_time) + { + $expired = true; + + if (!is_numeric($this->expiry_time) || $this->expiry_time < 1) { + $expired = false; + } else if (time() - $creation_time < $this->expiry_time) { + $expired = false; + } + + return $expired; + } + + /** + * Generate a wav file given the $letters in the code + * + * @param array $letters The letters making up the captcha + * @return string The audio content in WAV format + */ + protected function generateWAV($letters) + { + $wavCaptcha = new WavFile(); + $first = true; // reading first wav file + + if ($this->audio_use_sox && !is_executable($this->sox_binary_path)) { + throw new Exception("Path to SoX binary is incorrect or not executable"); + } + + foreach ($letters as $letter) { + $letter = strtoupper($letter); + + try { + $letter_file = realpath($this->audio_path) . DIRECTORY_SEPARATOR . $letter . '.wav'; + + if ($this->audio_use_sox) { + $sox_cmd = sprintf("%s %s -t wav - %s", + $this->sox_binary_path, + $letter_file, + $this->getSoxEffectChain()); + + $data = `$sox_cmd`; + + $l = new WavFile(); + $l->setIgnoreChunkSizes(true); + $l->setWavData($data); + } else { + $l = new WavFile($letter_file); + } + + if ($first) { + // set sample rate, bits/sample, and # of channels for file based on first letter + $wavCaptcha->setSampleRate($l->getSampleRate()) + ->setBitsPerSample($l->getBitsPerSample()) + ->setNumChannels($l->getNumChannels()); + $first = false; + } + + // append letter to the captcha audio + $wavCaptcha->appendWav($l); + + // random length of silence between $audio_gap_min and $audio_gap_max + if ($this->audio_gap_max > 0 && $this->audio_gap_max > $this->audio_gap_min) { + $wavCaptcha->insertSilence( mt_rand($this->audio_gap_min, $this->audio_gap_max) / 1000.0 ); + } + } catch (Exception $ex) { + // failed to open file, or the wav file is broken or not supported + // 2 wav files were not compatible, different # channels, bits/sample, or sample rate + throw new Exception("Error generating audio captcha on letter '$letter': " . $ex->getMessage()); + } + } + + /********* Set up audio filters *****************************/ + $filters = array(); + + if ($this->audio_use_noise == true) { + // use background audio - find random file + $wavNoise = false; + $randOffset = 0; + + /* + // uncomment to try experimental SoX noise generation. + // warning: sounds may be considered annoying + if ($this->audio_use_sox) { + $duration = $wavCaptcha->getDataSize() / ($wavCaptcha->getBitsPerSample() / 8) / + $wavCaptcha->getNumChannels() / $wavCaptcha->getSampleRate(); + $duration = round($duration, 2); + $wavNoise = new WavFile(); + $wavNoise->setIgnoreChunkSizes(true); + $noiseData = $this->getSoxNoiseData($duration, + $wavCaptcha->getNumChannels(), + $wavCaptcha->getSampleRate(), + $wavCaptcha->getBitsPerSample()); + $wavNoise->setWavData($noiseData, true); + + } else + */ + if ( ($noiseFile = $this->getRandomNoiseFile()) !== false) { + try { + $wavNoise = new WavFile($noiseFile, false); + } catch(Exception $ex) { + throw $ex; + } + + // start at a random offset from the beginning of the wavfile + // in order to add more randomness + + $randOffset = 0; + + if ($wavNoise->getNumBlocks() > 2 * $wavCaptcha->getNumBlocks()) { + $randBlock = mt_rand(0, $wavNoise->getNumBlocks() - $wavCaptcha->getNumBlocks()); + $wavNoise->readWavData($randBlock * $wavNoise->getBlockAlign(), $wavCaptcha->getNumBlocks() * $wavNoise->getBlockAlign()); + } else { + $wavNoise->readWavData(); + $randOffset = mt_rand(0, $wavNoise->getNumBlocks() - 1); + } + } + + if ($wavNoise !== false) { + $mixOpts = array('wav' => $wavNoise, + 'loop' => true, + 'blockOffset' => $randOffset); + + $filters[WavFile::FILTER_MIX] = $mixOpts; + $filters[WavFile::FILTER_NORMALIZE] = $this->audio_mix_normalization; + } + } + + if ($this->degrade_audio == true) { + // add random noise. + // any noise level below 95% is intensely distorted and not pleasant to the ear + $filters[WavFile::FILTER_DEGRADE] = mt_rand(95, 98) / 100.0; + } + + if (!empty($filters)) { + $wavCaptcha->filter($filters); // apply filters to captcha audio + } + + return $wavCaptcha->__toString(); + } + + /** + * Gets and returns the path to a random noise file from the audio noise directory. + * + * @return bool|string false if a file could not be found, or a string containing the path to the file. + */ + public function getRandomNoiseFile() + { + $return = false; + + if ( ($dh = opendir($this->audio_noise_path)) !== false ) { + $list = array(); + + while ( ($file = readdir($dh)) !== false ) { + if ($file == '.' || $file == '..') continue; + if (strtolower(substr($file, -4)) != '.wav') continue; + + $list[] = $file; + } + + closedir($dh); + + if (sizeof($list) > 0) { + $file = $list[array_rand($list, 1)]; + $return = $this->audio_noise_path . DIRECTORY_SEPARATOR . $file; + + if (!is_readable($return)) $return = false; + } + } + + return $return; + } + + /** + * Get a random effect or chain of effects to apply to a segment of the + * audio file. + * + * These effects should increase the randomness of the audio for + * a particular letter/number by modulating the signal. The SoX effects + * used are *bend*, *chorus*, *overdrive*, *pitch*, *reverb*, *tempo*, and + * *tremolo*. + * + * For each effect selected, random parameters are supplied to the effect. + * + * @param int $numEffects How many effects to chain together + * @return string A string of valid SoX effects and their respective options. + */ + protected function getSoxEffectChain($numEffects = 2) + { + $effectsList = array('bend', 'chorus', 'overdrive', 'pitch', 'reverb', 'tempo', 'tremolo'); + $effects = array_rand($effectsList, $numEffects); + $outEffects = array(); + + if (!is_array($effects)) $effects = array($effects); + + foreach($effects as $effect) { + $effect = $effectsList[$effect]; + + switch($effect) + { + case 'bend': + $delay = mt_rand(0, 15) / 100.0; + $cents = mt_rand(-120, 120); + $dur = mt_rand(75, 400) / 100.0; + $outEffects[] = "$effect $delay,$cents,$dur"; + break; + + case 'chorus': + $gainIn = mt_rand(75, 90) / 100.0; + $gainOut = mt_rand(70, 95) / 100.0; + $chorStr = "$effect $gainIn $gainOut"; + + for ($i = 0; $i < mt_rand(2, 3); ++$i) { + $delay = mt_rand(20, 100); + $decay = mt_rand(10, 100) / 100.0; + $speed = mt_rand(20, 50) / 100.0; + $depth = mt_rand(150, 250) / 100.0; + + $chorStr .= " $delay $decay $speed $depth -s"; + } + + $outEffects[] = $chorStr; + break; + + case 'overdrive': + $gain = mt_rand(5, 25); + $color = mt_rand(20, 70); + $outEffects[] = "$effect $gain $color"; + break; + + case 'pitch': + $cents = mt_rand(-300, 300); + $outEffects[] = "$effect $cents"; + break; + + case 'reverb': + $reverberance = mt_rand(20, 80); + $damping = mt_rand(10, 80); + $scale = mt_rand(85, 100); + $depth = mt_rand(90, 100); + $predelay = mt_rand(0, 5); + $outEffects[] = "$effect $reverberance $damping $scale $depth $predelay"; + break; + + case 'tempo': + $factor = mt_rand(65, 135) / 100.0; + $outEffects[] = "$effect -s $factor"; + break; + + case 'tremolo': + $hz = mt_rand(10, 30); + $depth = mt_rand(40, 85); + $outEffects[] = "$effect $hz $depth"; + break; + } + } + + return implode(' ', $outEffects); + } + + /** + * This function is not yet used. + * + * Generate random background noise from sweeping oscillators + * + * @param float $duration How long in seconds the generated sound will be + * @param int $numChannels Number of channels in output wav + * @param int $sampleRate Sample rate of output wav + * @param int $bitRate Bits per sample (8, 16, 24) + * @return string Audio data in wav format + */ + protected function getSoxNoiseData($duration, $numChannels, $sampleRate, $bitRate) + { + $shapes = array('sine', 'square', 'triangle', 'sawtooth', 'trapezium'); + $steps = array(':', '+', '/', '-'); + $selShapes = array_rand($shapes, 2); + $selSteps = array_rand($steps, 2); + $sweep0 = array(); + $sweep0[0] = mt_rand(100, 700); + $sweep0[1] = mt_rand(1500, 2500); + $sweep1 = array(); + $sweep1[0] = mt_rand(500, 1000); + $sweep1[1] = mt_rand(1200, 2000); + + if (mt_rand(0, 10) % 2 == 0) + $sweep0 = array_reverse($sweep0); + + if (mt_rand(0, 10) % 2 == 0) + $sweep1 = array_reverse($sweep1); + + $cmd = sprintf("%s -c %d -r %d -b %d -n -t wav - synth noise create vol 0.3 synth %.2f %s mix %d%s%d vol 0.3 synth %.2f %s fmod %d%s%d vol 0.3", + $this->sox_binary_path, + $numChannels, + $sampleRate, + $bitRate, + $duration, + $shapes[$selShapes[0]], + $sweep0[0], + $steps[$selSteps[0]], + $sweep0[1], + $duration, + $shapes[$selShapes[1]], + $sweep1[0], + $steps[$selSteps[1]], + $sweep1[1] + ); + $data = `$cmd`; + + return $data; + } + + /** + * Convert WAV data to MP3 using the Lame MP3 encoder binary + * + * @param string $data Contents of the WAV file to convert + * @return string MP3 file data + */ + protected function wavToMp3($data) + { + if (!file_exists(self::$lame_binary_path) || !is_executable(self::$lame_binary_path)) { + throw new Exception('Lame binary "' . $this->lame_binary_path . '" does not exist or is not executable'); + } + + // size of wav data input + $size = strlen($data); + + // file descriptors for reading and writing to the Lame process + $descriptors = array( + 0 => array('pipe', 'r'), // stdin + 1 => array('pipe', 'w'), // stdout + 2 => array('pipe', 'a'), // stderr + ); + + if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') { + // workaround for Windows conversion + // writing to STDIN seems to hang indefinitely after writing approximately 0xC400 bytes + $wavinput = tempnam(sys_get_temp_dir(), 'wav'); + if (!$wavinput) { + throw new Exception('Failed to create temporary file for WAV to MP3 conversion'); + } + file_put_contents($wavinput, $data); + $size = 0; + } else { + $wavinput = '-'; // stdin + } + + // Mono, variable bit rate, 32 kHz sampling rate, read WAV from stdin, write MP3 to stdout + $cmd = sprintf("%s -m m -v -b 32 %s -", self::$lame_binary_path, $wavinput); + $proc = proc_open($cmd, $descriptors, $pipes); + + if (!is_resource($proc)) { + throw new Exception('Failed to open process for MP3 encoding'); + } + + stream_set_blocking($pipes[0], 0); // set stdin to be non-blocking + + for ($written = 0; $written < $size; $written += $len) { + // write to stdin until all WAV data is written + $len = fwrite($pipes[0], substr($data, $written, 0x20000)); + + if ($len === 0) { + // fwrite wrote no data, make sure process is still alive, otherwise wait for it to process + $status = proc_get_status($proc); + if ($status['running'] === false) break; + usleep(25000); + } else if ($written < $size) { + // couldn't write all data, small pause and try again + usleep(10000); + } else if ($len === false) { + // fwrite failed, should not happen + break; + } + } + + fclose($pipes[0]); + + $data = stream_get_contents($pipes[1]); + $err = trim(stream_get_contents($pipes[2])); + + fclose($pipes[1]); + fclose($pipes[2]); + + $return = proc_close($proc); + + if ($wavinput != '-') unlink($wavinput); // delete temp file on Windows + + if ($return !== 0) { + throw new Exception("Failed to convert WAV to MP3. Shell returned ({$return}): {$err}"); + } else if ($written < $size) { + throw new Exception('Failed to convert WAV to MP3. Failed to write all data to encoder'); + } + + return $data; + } + + /** + * Return a wav file saying there was an error generating file + * + * @return string The binary audio contents + */ + protected function audioError() + { + return @file_get_contents(dirname(__FILE__) . '/audio/en/error.wav'); + } + + /** + * Checks to see if headers can be sent and if any error has been output + * to the browser + * + * @return bool true if it is safe to send headers, false if not + */ + protected function canSendHeaders() + { + if (headers_sent()) { + // output has been flushed and headers have already been sent + return false; + } else if (strlen((string)ob_get_contents()) > 0) { + // headers haven't been sent, but there is data in the buffer that will break image and audio data + return false; + } + + return true; + } + + /** + * Return a random float between 0 and 0.9999 + * + * @return float Random float between 0 and 0.9999 + */ + function frand() + { + return 0.0001 * mt_rand(0,9999); + } + + /** + * Convert an html color code to a Securimage_Color + * @param string $color + * @param Securimage_Color|string $default The defalt color to use if $color is invalid + */ + protected function initColor($color, $default) + { + if ($color == null) { + return new Securimage_Color($default); + } else if (is_string($color)) { + try { + return new Securimage_Color($color); + } catch(Exception $e) { + return new Securimage_Color($default); + } + } else if (is_array($color) && sizeof($color) == 3) { + return new Securimage_Color($color[0], $color[1], $color[2]); + } else { + return new Securimage_Color($default); + } + } + + /** + * The error handling function used when outputting captcha image or audio. + * + * This error handler helps determine if any errors raised would + * prevent captcha image or audio from displaying. If they have + * no effect on the output buffer or headers, true is returned so + * the script can continue processing. + * + * See https://github.com/dapphp/securimage/issues/15 + * + * @param int $errno PHP error number + * @param string $errstr String description of the error + * @param string $errfile File error occurred in + * @param int $errline Line the error occurred on in file + * @param array $errcontext Additional context information + * @return boolean true if the error was handled, false if PHP should handle the error + */ + public function errorHandler($errno, $errstr, $errfile = '', $errline = 0, $errcontext = array()) + { + // get the current error reporting level + $level = error_reporting(); + + // if error was supressed or $errno not set in current error level + if ($level == 0 || ($level & $errno) == 0) { + return true; + } + + return false; + } +} + + +/** + * Color object for Securimage CAPTCHA + * +* @since 2.0 + * @package Securimage + * @subpackage classes + * + */ +class Securimage_Color +{ + /** + * Red value (0-255) + * @var int + */ + public $r; + + /** + * Gree value (0-255) + * @var int + */ + public $g; + + /** + * Blue value (0-255) + * @var int + */ + public $b; + + /** + * Create a new Securimage_Color object. + * + * Constructor expects 1 or 3 arguments. + * + * When passing a single argument, specify the color using HTML hex format. + * + * When passing 3 arguments, specify each RGB component (from 0-255) + * individually. + * + * Examples: + * + * $color = new Securimage_Color('#0080FF'); + * $color = new Securimage_Color(0, 128, 255); + * + * @param string $color The html color code to use + * @throws Exception If any color value is not valid + */ + public function __construct($color = '#ffffff') + { + $args = func_get_args(); + + if (sizeof($args) == 0) { + $this->r = 255; + $this->g = 255; + $this->b = 255; + } else if (sizeof($args) == 1) { + // set based on html code + if (substr($color, 0, 1) == '#') { + $color = substr($color, 1); + } + + if (strlen($color) != 3 && strlen($color) != 6) { + throw new InvalidArgumentException( + 'Invalid HTML color code passed to Securimage_Color' + ); + } + + $this->constructHTML($color); + } else if (sizeof($args) == 3) { + $this->constructRGB($args[0], $args[1], $args[2]); + } else { + throw new InvalidArgumentException( + 'Securimage_Color constructor expects 0, 1 or 3 arguments; ' . sizeof($args) . ' given' + ); + } + } + + /** + * Construct from an rgb triplet + * + * @param int $red The red component, 0-255 + * @param int $green The green component, 0-255 + * @param int $blue The blue component, 0-255 + */ + protected function constructRGB($red, $green, $blue) + { + if ($red < 0) $red = 0; + if ($red > 255) $red = 255; + if ($green < 0) $green = 0; + if ($green > 255) $green = 255; + if ($blue < 0) $blue = 0; + if ($blue > 255) $blue = 255; + + $this->r = $red; + $this->g = $green; + $this->b = $blue; + } + + /** + * Construct from an html hex color code + * + * @param string $color + */ + protected function constructHTML($color) + { + if (strlen($color) == 3) { + $red = str_repeat(substr($color, 0, 1), 2); + $green = str_repeat(substr($color, 1, 1), 2); + $blue = str_repeat(substr($color, 2, 1), 2); + } else { + $red = substr($color, 0, 2); + $green = substr($color, 2, 2); + $blue = substr($color, 4, 2); + } + + $this->r = hexdec($red); + $this->g = hexdec($green); + $this->b = hexdec($blue); + } +} diff --git a/vendor/dapphp/securimage/securimage_play.php b/vendor/dapphp/securimage/securimage_play.php new file mode 100644 index 0000000..b028c2b --- /dev/null +++ b/vendor/dapphp/securimage/securimage_play.php @@ -0,0 +1,70 @@ +<?php + +/** + * Project: Securimage: A PHP class for creating and managing form CAPTCHA images<br /> + * File: securimage_play.php<br /> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or any later version.<br /><br /> + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details.<br /><br /> + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA<br /><br /> + * + * Any modifications to the library should be indicated clearly in the source code + * to inform users that the changes are not a part of the original software.<br /><br /> + * + * If you found this script useful, please take a quick moment to rate it.<br /> + * http://www.hotscripts.com/rate/49400.html Thanks. + * + * @link http://www.phpcaptcha.org Securimage PHP CAPTCHA + * @link http://www.phpcaptcha.org/latest.zip Download Latest Version + * @link http://www.phpcaptcha.org/Securimage_Docs/ Online Documentation + * @copyright 2012 Drew Phillips + * @author Drew Phillips <drew@drew-phillips.com> + * @version 3.6.6 (Nov 20 2017) + * @package Securimage + * + */ + +require_once dirname(__FILE__) . '/securimage.php'; + +// if using database, adjust these options as necessary and change $img = new Securimage(); to $img = new Securimage($options); +// see test.mysql.php or test.sqlite.php for examples +$options = array( + 'use_database' => true, + 'database_name' => '', + 'database_user' => '', + 'database_driver' => Securimage::SI_DRIVER_MYSQL +); + +$img = new Securimage(); + +// Other audio settings +//$img->audio_use_sox = true; +//$img->audio_use_noise = true; +//$img->degrade_audio = false; +//$img->sox_binary_path = 'sox'; +//Securimage::$lame_binary_path = '/usr/bin/lame'; // for mp3 audio support + +// To use an alternate language, uncomment the following and download the files from phpcaptcha.org +// $img->audio_path = $img->securimage_path . '/audio/es/'; + +// If you have more than one captcha on a page, one must use a custom namespace +// $img->namespace = 'form2'; + +// set namespace if supplied to script via HTTP GET +if (!empty($_GET['namespace'])) $img->setNamespace($_GET['namespace']); + + +// mp3 or wav format +$format = (isset($_GET['format']) && strtolower($_GET['format']) == 'mp3') ? 'mp3' : null; + +$img->outputAudioFile($format); diff --git a/vendor/dapphp/securimage/securimage_show.php b/vendor/dapphp/securimage/securimage_show.php new file mode 100644 index 0000000..f352f76 --- /dev/null +++ b/vendor/dapphp/securimage/securimage_show.php @@ -0,0 +1,79 @@ +<?php + +/** + * Project: Securimage: A PHP class for creating and managing form CAPTCHA images<br /> + * File: securimage_show.php<br /> + * + * Copyright (c) 2013, Drew Phillips + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * Any modifications to the library should be indicated clearly in the source code + * to inform users that the changes are not a part of the original software.<br /><br /> + * + * If you found this script useful, please take a quick moment to rate it.<br /> + * http://www.hotscripts.com/rate/49400.html Thanks. + * + * @link http://www.phpcaptcha.org Securimage PHP CAPTCHA + * @link http://www.phpcaptcha.org/latest.zip Download Latest Version + * @link http://www.phpcaptcha.org/Securimage_Docs/ Online Documentation + * @copyright 2013 Drew Phillips + * @author Drew Phillips <drew@drew-phillips.com> + * @version 3.6.6 (Nov 20 2017) + * @package Securimage + * + */ + +// Remove the "//" from the following line for debugging problems +// error_reporting(E_ALL); ini_set('display_errors', 1); + +require_once dirname(__FILE__) . '/securimage.php'; + +$img = new Securimage(); + +// You can customize the image by making changes below, some examples are included - remove the "//" to uncomment + +//$img->ttf_file = './Quiff.ttf'; +//$img->captcha_type = Securimage::SI_CAPTCHA_MATHEMATIC; // show a simple math problem instead of text +//$img->case_sensitive = true; // true to use case sensitve codes - not recommended +//$img->image_height = 90; // height in pixels of the image +//$img->image_width = $img->image_height * M_E; // a good formula for image size based on the height +//$img->perturbation = .75; // 1.0 = high distortion, higher numbers = more distortion +//$img->image_bg_color = new Securimage_Color("#0099CC"); // image background color +//$img->text_color = new Securimage_Color("#EAEAEA"); // captcha text color +//$img->num_lines = 8; // how many lines to draw over the image +//$img->line_color = new Securimage_Color("#0000CC"); // color of lines over the image +//$img->image_type = SI_IMAGE_JPEG; // render as a jpeg image +//$img->signature_color = new Securimage_Color(rand(0, 64), +// rand(64, 128), +// rand(128, 255)); // random signature color + +// see securimage.php for more options that can be set + +// set namespace if supplied to script via HTTP GET +if (!empty($_GET['namespace'])) $img->setNamespace($_GET['namespace']); + + +$img->show(); // outputs the image and content headers to the browser +// alternate use: +// $img->show('/path/to/background_image.jpg'); diff --git a/vendor/dapphp/securimage/words/words.txt b/vendor/dapphp/securimage/words/words.txt new file mode 100644 index 0000000..9a444ce --- /dev/null +++ b/vendor/dapphp/securimage/words/words.txt @@ -0,0 +1,15457 @@ +aahing +aaliis +aarrgh +abacas +abacus +abakas +abamps +abased +abaser +abases +abasia +abated +abater +abates +abatis +abator +abayas +abbacy +abbess +abbeys +abbots +abduce +abduct +abeles +abelia +abhors +abided +abider +abides +abject +abjure +ablate +ablaut +ablaze +ablest +ablins +abloom 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