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-rw-r--r--lib/libalpm/be_package.c292
1 files changed, 187 insertions, 105 deletions
diff --git a/lib/libalpm/be_package.c b/lib/libalpm/be_package.c
index 6dfddd61..41b1eb2d 100644
--- a/lib/libalpm/be_package.c
+++ b/lib/libalpm/be_package.c
@@ -1,5 +1,5 @@
/*
- * be_package.c
+ * be_package.c : backend for packages
*
* Copyright (c) 2006-2011 Pacman Development Team <pacman-dev@archlinux.org>
* Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
@@ -20,10 +20,8 @@
#include "config.h"
-#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <limits.h>
#include <errno.h>
/* libarchive */
@@ -32,8 +30,10 @@
/* libalpm */
#include "alpm_list.h"
+#include "alpm.h"
#include "util.h"
#include "log.h"
+#include "handle.h"
#include "package.h"
#include "deps.h" /* _alpm_splitdep */
@@ -43,40 +43,38 @@
* @param pkg the package (file) to read the changelog
* @return a 'file stream' to the package changelog
*/
-static void *_package_changelog_open(pmpkg_t *pkg)
+static void *_package_changelog_open(alpm_pkg_t *pkg)
{
- ALPM_LOG_FUNC;
-
- ASSERT(pkg != NULL, return(NULL));
+ ASSERT(pkg != NULL, return NULL);
struct archive *archive = NULL;
struct archive_entry *entry;
const char *pkgfile = pkg->origin_data.file;
if((archive = archive_read_new()) == NULL) {
- RET_ERR(PM_ERR_LIBARCHIVE, NULL);
+ RET_ERR(pkg->handle, ALPM_ERR_LIBARCHIVE, NULL);
}
archive_read_support_compression_all(archive);
archive_read_support_format_all(archive);
- if (archive_read_open_filename(archive, pkgfile,
+ if(archive_read_open_filename(archive, pkgfile,
ARCHIVE_DEFAULT_BYTES_PER_BLOCK) != ARCHIVE_OK) {
- RET_ERR(PM_ERR_PKG_OPEN, NULL);
+ RET_ERR(pkg->handle, ALPM_ERR_PKG_OPEN, NULL);
}
while(archive_read_next_header(archive, &entry) == ARCHIVE_OK) {
const char *entry_name = archive_entry_pathname(entry);
if(strcmp(entry_name, ".CHANGELOG") == 0) {
- return(archive);
+ return archive;
}
}
/* we didn't find a changelog */
archive_read_finish(archive);
errno = ENOENT;
- return(NULL);
+ return NULL;
}
/**
@@ -89,26 +87,17 @@ static void *_package_changelog_open(pmpkg_t *pkg)
* @return the number of characters read, or 0 if there is no more data
*/
static size_t _package_changelog_read(void *ptr, size_t size,
- const pmpkg_t *pkg, const void *fp)
+ const alpm_pkg_t UNUSED *pkg, const void *fp)
{
- ssize_t sret = archive_read_data((struct archive*)fp, ptr, size);
+ ssize_t sret = archive_read_data((struct archive *)fp, ptr, size);
/* Report error (negative values) */
if(sret < 0) {
- pm_errno = PM_ERR_LIBARCHIVE;
- return(0);
+ RET_ERR(pkg->handle, ALPM_ERR_LIBARCHIVE, 0);
} else {
- return((size_t)sret);
+ return (size_t)sret;
}
}
-/*
-static int _package_changelog_feof(const pmpkg_t *pkg, void *fp)
-{
- // note: this doesn't quite work, no feof in libarchive
- return( archive_read_data((struct archive*)fp, NULL, 0) );
-}
-*/
-
/**
* Close a package changelog for reading. Similar to fclose in functionality,
* except that the 'file stream' is from an archive.
@@ -116,9 +105,9 @@ static int _package_changelog_feof(const pmpkg_t *pkg, void *fp)
* @param fp a 'file stream' to the package changelog
* @return whether closing the package changelog stream was successful
*/
-static int _package_changelog_close(const pmpkg_t *pkg, void *fp)
+static int _package_changelog_close(const alpm_pkg_t UNUSED *pkg, void *fp)
{
- return( archive_read_finish((struct archive *)fp) );
+ return archive_read_finish((struct archive *)fp);
}
/** Package file operations struct accessor. We implement this as a method
@@ -137,72 +126,70 @@ static struct pkg_operations *get_file_pkg_ops(void)
file_pkg_ops.changelog_close = _package_changelog_close;
file_pkg_ops_initialized = 1;
}
- return(&file_pkg_ops);
+ return &file_pkg_ops;
}
/**
- * Parses the package description file for a package into a pmpkg_t struct.
+ * Parses the package description file for a package into a alpm_pkg_t struct.
* @param archive the archive to read from, pointed at the .PKGINFO entry
- * @param newpkg an empty pmpkg_t struct to fill with package info
+ * @param newpkg an empty alpm_pkg_t struct to fill with package info
*
- * @return 0 on success, 1 on error
+ * @return 0 on success, -1 on error
*/
-static int parse_descfile(struct archive *a, pmpkg_t *newpkg)
+static int parse_descfile(alpm_handle_t *handle, struct archive *a, alpm_pkg_t *newpkg)
{
char *ptr = NULL;
char *key = NULL;
- int linenum = 0;
+ int ret, linenum = 0;
struct archive_read_buffer buf;
- ALPM_LOG_FUNC;
-
memset(&buf, 0, sizeof(buf));
/* 512K for a line length seems reasonable */
buf.max_line_size = 512 * 1024;
/* loop until we reach EOF or other error */
- while(_alpm_archive_fgets(a, &buf) == ARCHIVE_OK) {
- char *line = _alpm_strtrim(buf.line);
+ while((ret = _alpm_archive_fgets(a, &buf)) == ARCHIVE_OK) {
+ size_t len = _alpm_strip_newline(buf.line);
linenum++;
- if(strlen(line) == 0 || line[0] == '#') {
+ if(len == 0 || buf.line[0] == '#') {
continue;
}
- ptr = line;
+ ptr = buf.line;
key = strsep(&ptr, "=");
if(key == NULL || ptr == NULL) {
- _alpm_log(PM_LOG_DEBUG, "%s: syntax error in description file line %d\n",
+ _alpm_log(handle, ALPM_LOG_DEBUG, "%s: syntax error in description file line %d\n",
newpkg->name ? newpkg->name : "error", linenum);
} else {
key = _alpm_strtrim(key);
while(*ptr == ' ') ptr++;
ptr = _alpm_strtrim(ptr);
if(strcmp(key, "pkgname") == 0) {
- STRDUP(newpkg->name, ptr, RET_ERR(PM_ERR_MEMORY, -1));
+ STRDUP(newpkg->name, ptr, return -1);
newpkg->name_hash = _alpm_hash_sdbm(newpkg->name);
} else if(strcmp(key, "pkgbase") == 0) {
/* not used atm */
} else if(strcmp(key, "pkgver") == 0) {
- STRDUP(newpkg->version, ptr, RET_ERR(PM_ERR_MEMORY, -1));
+ STRDUP(newpkg->version, ptr, return -1);
} else if(strcmp(key, "pkgdesc") == 0) {
- STRDUP(newpkg->desc, ptr, RET_ERR(PM_ERR_MEMORY, -1));
+ STRDUP(newpkg->desc, ptr, return -1);
} else if(strcmp(key, "group") == 0) {
newpkg->groups = alpm_list_add(newpkg->groups, strdup(ptr));
} else if(strcmp(key, "url") == 0) {
- STRDUP(newpkg->url, ptr, RET_ERR(PM_ERR_MEMORY, -1));
+ STRDUP(newpkg->url, ptr, return -1);
} else if(strcmp(key, "license") == 0) {
newpkg->licenses = alpm_list_add(newpkg->licenses, strdup(ptr));
} else if(strcmp(key, "builddate") == 0) {
newpkg->builddate = _alpm_parsedate(ptr);
} else if(strcmp(key, "packager") == 0) {
- STRDUP(newpkg->packager, ptr, RET_ERR(PM_ERR_MEMORY, -1));
+ STRDUP(newpkg->packager, ptr, return -1);
} else if(strcmp(key, "arch") == 0) {
- STRDUP(newpkg->arch, ptr, RET_ERR(PM_ERR_MEMORY, -1));
+ STRDUP(newpkg->arch, ptr, return -1);
} else if(strcmp(key, "size") == 0) {
/* size in the raw package is uncompressed (installed) size */
newpkg->isize = atol(ptr);
} else if(strcmp(key, "depend") == 0) {
- pmdepend_t *dep = _alpm_splitdep(ptr);
+ alpm_depend_t *dep = _alpm_splitdep(ptr);
newpkg->depends = alpm_list_add(newpkg->depends, dep);
} else if(strcmp(key, "optdepend") == 0) {
newpkg->optdepends = alpm_list_add(newpkg->optdepends, strdup(ptr));
@@ -213,70 +200,148 @@ static int parse_descfile(struct archive *a, pmpkg_t *newpkg)
} else if(strcmp(key, "provides") == 0) {
newpkg->provides = alpm_list_add(newpkg->provides, strdup(ptr));
} else if(strcmp(key, "backup") == 0) {
- newpkg->backup = alpm_list_add(newpkg->backup, strdup(ptr));
+ alpm_backup_t *backup;
+ CALLOC(backup, 1, sizeof(alpm_backup_t), return -1);
+ STRDUP(backup->name, ptr, return -1);
+ newpkg->backup = alpm_list_add(newpkg->backup, backup);
} else if(strcmp(key, "force") == 0) {
/* deprecated, skip it */
} else if(strcmp(key, "makepkgopt") == 0) {
/* not used atm */
} else {
- _alpm_log(PM_LOG_DEBUG, "%s: unknown key '%s' in description file line %d\n",
+ _alpm_log(handle, ALPM_LOG_DEBUG, "%s: unknown key '%s' in description file line %d\n",
newpkg->name ? newpkg->name : "error", key, linenum);
}
}
- line[0] = '\0';
}
+ if(ret != ARCHIVE_EOF) {
+ _alpm_log(handle, ALPM_LOG_DEBUG, "error parsing package descfile\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static void files_merge(alpm_file_t a[], alpm_file_t b[], alpm_file_t c[],
+ size_t m, size_t n)
+{
+ size_t i = 0, j = 0, k = 0;
+ while(i < m && j < n) {
+ if(strcmp(a[i].name, b[j].name) < 0) {
+ c[k++] = a[i++];
+ } else {
+ c[k++] = b[j++];
+ }
+ }
+ while(i < m) {
+ c[k++] = a[i++];
+ }
+ while(j < n) {
+ c[k++] = b[j++];
+ }
+}
- return(0);
+static alpm_file_t *files_msort(alpm_file_t *files, size_t n)
+{
+ alpm_file_t *work;
+ size_t blocksize = 1;
+
+ CALLOC(work, n, sizeof(alpm_file_t), return NULL);
+
+ for(blocksize = 1; blocksize < n; blocksize *= 2) {
+ size_t i, max_extent = 0;
+ for(i = 0; i < n - blocksize; i += 2 * blocksize) {
+ /* this limits our actual merge to the length of the array, since we will
+ * not likely be a perfect power of two. */
+ size_t right_blocksize = blocksize;
+ if(i + blocksize * 2 > n) {
+ right_blocksize = n - i - blocksize;
+ }
+ files_merge(files + i, files + i + blocksize, work + i,
+ blocksize, right_blocksize);
+ max_extent = i + blocksize + right_blocksize;
+ }
+ /* ensure we only copy what we actually touched on this merge pass,
+ * no more, no less */
+ memcpy(files, work, max_extent * sizeof(alpm_file_t));
+ }
+ free(work);
+ return files;
}
/**
- * Load a package and create the corresponding pmpkg_t struct.
+ * Load a package and create the corresponding alpm_pkg_t struct.
+ * @param handle the context handle
* @param pkgfile path to the package file
* @param full whether to stop the load after metadata is read or continue
* through the full archive
- * @return An information filled pmpkg_t struct
+ * @return An information filled alpm_pkg_t struct
*/
-static pmpkg_t *pkg_load(const char *pkgfile, int full)
+alpm_pkg_t *_alpm_pkg_load_internal(alpm_handle_t *handle, const char *pkgfile,
+ int full, const char *md5sum, const char *base64_sig,
+ alpm_siglevel_t level)
{
- int ret = ARCHIVE_OK;
+ int ret;
int config = 0;
struct archive *archive;
struct archive_entry *entry;
- pmpkg_t *newpkg = NULL;
+ alpm_pkg_t *newpkg = NULL;
struct stat st;
-
- ALPM_LOG_FUNC;
+ size_t files_count = 0, files_size = 0;
+ alpm_file_t *files = NULL;
if(pkgfile == NULL || strlen(pkgfile) == 0) {
- RET_ERR(PM_ERR_WRONG_ARGS, NULL);
+ RET_ERR(handle, ALPM_ERR_WRONG_ARGS, NULL);
}
- if(stat(pkgfile, &st) != 0) {
- RET_ERR(PM_ERR_PKG_OPEN, NULL);
+ /* attempt to stat the package file, ensure it exists */
+ if(stat(pkgfile, &st) == 0) {
+ newpkg = _alpm_pkg_new();
+ if(newpkg == NULL) {
+ RET_ERR(handle, ALPM_ERR_MEMORY, NULL);
+ }
+ newpkg->filename = strdup(pkgfile);
+ newpkg->size = st.st_size;
+ } else {
+ /* couldn't stat the pkgfile, return an error */
+ RET_ERR(handle, ALPM_ERR_PKG_OPEN, NULL);
}
+ /* first steps- validate the package file */
+ _alpm_log(handle, ALPM_LOG_DEBUG, "md5sum: %s\n", md5sum);
+ if(md5sum) {
+ _alpm_log(handle, ALPM_LOG_DEBUG, "checking md5sum for %s\n", pkgfile);
+ if(_alpm_test_md5sum(pkgfile, md5sum) != 0) {
+ alpm_pkg_free(newpkg);
+ RET_ERR(handle, ALPM_ERR_PKG_INVALID_CHECKSUM, NULL);
+ }
+ }
+
+ _alpm_log(handle, ALPM_LOG_DEBUG, "base64_sig: %s\n", base64_sig);
+ if(level & ALPM_SIG_PACKAGE &&
+ _alpm_check_pgp_helper(handle, pkgfile, base64_sig,
+ level & ALPM_SIG_PACKAGE_OPTIONAL, level & ALPM_SIG_PACKAGE_MARGINAL_OK,
+ level & ALPM_SIG_PACKAGE_UNKNOWN_OK, ALPM_ERR_PKG_INVALID_SIG)) {
+ _alpm_pkg_free(newpkg);
+ return NULL;
+ }
+
+ /* next- try to create an archive object to read in the package */
if((archive = archive_read_new()) == NULL) {
- RET_ERR(PM_ERR_LIBARCHIVE, NULL);
+ alpm_pkg_free(newpkg);
+ RET_ERR(handle, ALPM_ERR_LIBARCHIVE, NULL);
}
archive_read_support_compression_all(archive);
archive_read_support_format_all(archive);
- if (archive_read_open_filename(archive, pkgfile,
+ if(archive_read_open_filename(archive, pkgfile,
ARCHIVE_DEFAULT_BYTES_PER_BLOCK) != ARCHIVE_OK) {
- RET_ERR(PM_ERR_PKG_OPEN, NULL);
- }
-
- newpkg = _alpm_pkg_new();
- if(newpkg == NULL) {
- archive_read_finish(archive);
- RET_ERR(PM_ERR_MEMORY, NULL);
+ alpm_pkg_free(newpkg);
+ RET_ERR(handle, ALPM_ERR_PKG_OPEN, NULL);
}
- newpkg->filename = strdup(pkgfile);
- newpkg->size = st.st_size;
-
- _alpm_log(PM_LOG_DEBUG, "starting package load for %s\n", pkgfile);
+ _alpm_log(handle, ALPM_LOG_DEBUG, "starting package load for %s\n", pkgfile);
/* If full is false, only read through the archive until we find our needed
* metadata. If it is true, read through the entire archive, which serves
@@ -286,17 +351,17 @@ static pmpkg_t *pkg_load(const char *pkgfile, int full)
if(strcmp(entry_name, ".PKGINFO") == 0) {
/* parse the info file */
- if(parse_descfile(archive, newpkg) != 0) {
- _alpm_log(PM_LOG_ERROR, _("could not parse package description file in %s\n"),
+ if(parse_descfile(handle, archive, newpkg) != 0) {
+ _alpm_log(handle, ALPM_LOG_ERROR, _("could not parse package description file in %s\n"),
pkgfile);
goto pkg_invalid;
}
if(newpkg->name == NULL || strlen(newpkg->name) == 0) {
- _alpm_log(PM_LOG_ERROR, _("missing package name in %s\n"), pkgfile);
+ _alpm_log(handle, ALPM_LOG_ERROR, _("missing package name in %s\n"), pkgfile);
goto pkg_invalid;
}
if(newpkg->version == NULL || strlen(newpkg->version) == 0) {
- _alpm_log(PM_LOG_ERROR, _("missing package version in %s\n"), pkgfile);
+ _alpm_log(handle, ALPM_LOG_ERROR, _("missing package version in %s\n"), pkgfile);
goto pkg_invalid;
}
config = 1;
@@ -308,13 +373,33 @@ static pmpkg_t *pkg_load(const char *pkgfile, int full)
* already been handled (for future possibilities) */
} else if(full) {
/* Keep track of all files for filelist generation */
- newpkg->files = alpm_list_add(newpkg->files, strdup(entry_name));
+ if(files_count >= files_size) {
+ size_t old_size = files_size;
+ if(files_size == 0) {
+ files_size = 4;
+ } else {
+ files_size *= 2;
+ }
+ files = realloc(files, sizeof(alpm_file_t) * files_size);
+ if(!files) {
+ ALLOC_FAIL(sizeof(alpm_file_t) * files_size);
+ goto error;
+ }
+ /* ensure all new memory is zeroed out, in both the initial
+ * allocation and later reallocs */
+ memset(files + old_size, 0,
+ sizeof(alpm_file_t) * (files_size - old_size));
+ }
+ STRDUP(files[files_count].name, entry_name, goto error);
+ files[files_count].size = archive_entry_size(entry);
+ files[files_count].mode = archive_entry_mode(entry);
+ files_count++;
}
if(archive_read_data_skip(archive)) {
- _alpm_log(PM_LOG_ERROR, _("error while reading package %s: %s\n"),
+ _alpm_log(handle, ALPM_LOG_ERROR, _("error while reading package %s: %s\n"),
pkgfile, archive_error_string(archive));
- pm_errno = PM_ERR_LIBARCHIVE;
+ handle->pm_errno = ALPM_ERR_LIBARCHIVE;
goto error;
}
@@ -325,14 +410,14 @@ static pmpkg_t *pkg_load(const char *pkgfile, int full)
}
if(ret != ARCHIVE_EOF && ret != ARCHIVE_OK) { /* An error occured */
- _alpm_log(PM_LOG_ERROR, _("error while reading package %s: %s\n"),
+ _alpm_log(handle, ALPM_LOG_ERROR, _("error while reading package %s: %s\n"),
pkgfile, archive_error_string(archive));
- pm_errno = PM_ERR_LIBARCHIVE;
+ handle->pm_errno = ALPM_ERR_LIBARCHIVE;
goto error;
}
if(!config) {
- _alpm_log(PM_LOG_ERROR, _("missing package metadata in %s\n"), pkgfile);
+ _alpm_log(handle, ALPM_LOG_ERROR, _("missing package metadata in %s\n"), pkgfile);
goto pkg_invalid;
}
@@ -340,49 +425,46 @@ static pmpkg_t *pkg_load(const char *pkgfile, int full)
/* internal fields for package struct */
newpkg->origin = PKG_FROM_FILE;
- /* TODO eventually kill/move this? */
newpkg->origin_data.file = strdup(pkgfile);
newpkg->ops = get_file_pkg_ops();
+ newpkg->handle = handle;
if(full) {
+ /* attempt to hand back any memory we don't need */
+ files = realloc(files, sizeof(alpm_file_t) * files_count);
/* "checking for conflicts" requires a sorted list, ensure that here */
- _alpm_log(PM_LOG_DEBUG, "sorting package filelist for %s\n", pkgfile);
- newpkg->files = alpm_list_msort(newpkg->files, alpm_list_count(newpkg->files),
- _alpm_str_cmp);
- newpkg->infolevel = INFRQ_ALL;
+ _alpm_log(handle, ALPM_LOG_DEBUG, "sorting package filelist for %s\n", pkgfile);
+ newpkg->files.files = files_msort(files, files_count);
+ newpkg->files.count = files_count;
+ newpkg->infolevel = INFRQ_BASE | INFRQ_DESC | INFRQ_FILES | INFRQ_SCRIPTLET;
} else {
- /* get rid of any partial filelist we may have collected, it is invalid */
- FREELIST(newpkg->files);
- newpkg->infolevel = INFRQ_BASE | INFRQ_DESC;
+ newpkg->infolevel = INFRQ_BASE | INFRQ_DESC | INFRQ_SCRIPTLET;
}
- return(newpkg);
+ return newpkg;
pkg_invalid:
- pm_errno = PM_ERR_PKG_INVALID;
+ handle->pm_errno = ALPM_ERR_PKG_INVALID;
error:
_alpm_pkg_free(newpkg);
archive_read_finish(archive);
- return(NULL);
+ return NULL;
}
-int SYMEXPORT alpm_pkg_load(const char *filename, int full, pmpkg_t **pkg)
+int SYMEXPORT alpm_pkg_load(alpm_handle_t *handle, const char *filename, int full,
+ alpm_siglevel_t level, alpm_pkg_t **pkg)
{
- ALPM_LOG_FUNC;
-
- /* Sanity checks */
- ASSERT(filename != NULL && strlen(filename) != 0,
- RET_ERR(PM_ERR_WRONG_ARGS, -1));
- ASSERT(pkg != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
+ CHECK_HANDLE(handle, return -1);
+ ASSERT(pkg != NULL, RET_ERR(handle, ALPM_ERR_WRONG_ARGS, -1));
- *pkg = pkg_load(filename, full);
+ *pkg = _alpm_pkg_load_internal(handle, filename, full, NULL, NULL, level);
if(*pkg == NULL) {
/* pm_errno is set by pkg_load */
- return(-1);
+ return -1;
}
- return(0);
+ return 0;
}
/* vim: set ts=2 sw=2 noet: */

Copyright © 2002-2022 Judd Vinet and Aaron Griffin. Copyright © 2022 Erich Eckner.
The Arch Linux name and logo are recognized trademarks. Some rights reserved. The registered trademark Linux® is used pursuant to a sublicense from LMI, the exclusive licensee of Linus Torvalds, owner of the mark on a world-wide basis.