/* * util.c * * Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org> * Copyright (c) 2005 by Aurelien Foret <orelien@chez.com> * Copyright (c) 2005 by Christian Hamar <krics@linuxforum.hu> * Copyright (c) 2006 by David Kimpe <dnaku@frugalware.org> * Copyright (c) 2005, 2006 by Miklos Vajna <vmiklos@frugalware.org> * * This program 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 2 of the License, or * (at your option) any later version. * * This program 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, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, * USA. */ #include "config.h" #include <stdio.h> #include <stdlib.h> #include <string.h> #include <fcntl.h> #include <unistd.h> #include <ctype.h> #include <dirent.h> #include <time.h> #include <syslog.h> #include <errno.h> #include <sys/types.h> #include <sys/stat.h> /* libarchive */ #include <archive.h> #include <archive_entry.h> /* libalpm */ #include "util.h" #include "log.h" #include "error.h" #include "package.h" #include "alpm.h" #ifdef __sun__ /* This is a replacement for strsep which is not portable (missing on Solaris). * Copyright (c) 2001 by François Gouget <fgouget_at_codeweavers.com> */ char* strsep(char** str, const char* delims) { char* token; if (*str==NULL) { /* No more tokens */ return NULL; } token=*str; while (**str!='\0') { if (strchr(delims,**str)!=NULL) { **str='\0'; (*str)++; return token; } (*str)++; } /* There is no other token */ *str=NULL; return token; } /* Backported from Solaris Express 4/06 * Copyright (c) 2006 Sun Microsystems, Inc. */ char *mkdtemp(char *template) { char *t = alloca(strlen(template) + 1); char *r; /* Save template */ (void) strcpy(t, template); for (; ; ) { r = mkstemp(template); if (*r == '\0') return (NULL); if (mkdir(template, 0700) == 0) return (r); /* Other errors indicate persistent conditions. */ if (errno != EEXIST) return (NULL); /* Reset template */ (void) strcpy(template, t); } } #endif /* does the same thing as 'mkdir -p' */ int _alpm_makepath(const char *path) { char *orig, *str, *ptr; char full[PATH_MAX] = ""; mode_t oldmask; oldmask = umask(0000); orig = strdup(path); str = orig; while((ptr = strsep(&str, "/"))) { if(strlen(ptr)) { struct stat buf; strcat(full, "/"); strcat(full, ptr); if(stat(full, &buf)) { if(mkdir(full, 0755)) { FREE(orig); umask(oldmask); _alpm_log(PM_LOG_ERROR, _("failed to make path '%s' : %s"), path, strerror(errno)); return(1); } } } } FREE(orig); umask(oldmask); return(0); } int _alpm_copyfile(const char *src, const char *dest) { FILE *in, *out; size_t len; char buf[4097]; in = fopen(src, "r"); if(in == NULL) { return(1); } out = fopen(dest, "w"); if(out == NULL) { fclose(in); return(1); } /* do the actual file copy */ while((len = fread(buf, 1, 4096, in))) { fwrite(buf, 1, len, out); } fclose(in); /* chmod dest to permissions of src, as long as it is not a symlink */ struct stat statbuf; if(!stat(src, &statbuf)) { if(! S_ISLNK(statbuf.st_mode)) { fchmod(fileno(out), statbuf.st_mode); } } else { /* stat was unsuccessful */ fclose(out); return(1); } fclose(out); return(0); } /* Convert a string to uppercase */ char *_alpm_strtoupper(char *str) { char *ptr = str; while(*ptr) { (*ptr) = toupper(*ptr); ptr++; } return(str); } /* Trim whitespace and newlines from a string */ char *_alpm_strtrim(char *str) { char *pch = str; if(*str == '\0') { /* string is empty, so we're done. */ return(str); } while(isspace((int)*pch)) { pch++; } if(pch != str) { memmove(str, pch, (strlen(pch) + 1)); } /* check if there wasn't anything but whitespace in the string. */ if(*str == '\0') { return(str); } pch = (str + (strlen(str) - 1)); while(isspace((int)*pch)) { pch--; } *++pch = '\0'; return(str); } /* Helper function for _alpm_strreplace */ static void _strnadd(char **str, const char *append, unsigned int count) { if(*str) { *str = realloc(*str, strlen(*str) + count + 1); } else { *str = calloc(sizeof(char), count + 1); } strncat(*str, append, count); } /* Replace all occurances of 'needle' with 'replace' in 'str', returning * a new string (must be free'd) */ char *_alpm_strreplace(const char *str, const char *needle, const char *replace) { const char *p, *q; p = q = str; char *newstr = NULL; unsigned int needlesz = strlen(needle), replacesz = strlen(replace); while (1) { q = strstr(p, needle); if(!q) { /* not found */ if(*p) { /* add the rest of 'p' */ _strnadd(&newstr, p, strlen(p)); } break; } else { /* found match */ if(q > p){ /* add chars between this occurance and last occurance, if any */ _strnadd(&newstr, p, q - p); } _strnadd(&newstr, replace, replacesz); p = q + needlesz; } } return newstr; } /* Create a lock file */ int _alpm_lckmk() { int fd, count = 0; char *dir, *ptr; const char *file = alpm_option_get_lockfile(); /* create the dir of the lockfile first */ dir = strdup(file); ptr = strrchr(dir, '/'); if(ptr) { *ptr = '\0'; } _alpm_makepath(dir); while((fd = open(file, O_WRONLY | O_CREAT | O_EXCL, 0000)) == -1 && errno == EACCES) { if(++count < 1) { sleep(1); } else { return(-1); } } free(dir); return(fd > 0 ? fd : -1); } /* Remove a lock file */ int _alpm_lckrm() { const char *file = alpm_option_get_lockfile(); if(unlink(file) == -1 && errno != ENOENT) { return(-1); } return(0); } /* Compression functions */ int _alpm_unpack(const char *archive, const char *prefix, const char *fn) { register struct archive *_archive; struct archive_entry *entry; char expath[PATH_MAX]; const int archive_flags = ARCHIVE_EXTRACT_OWNER | ARCHIVE_EXTRACT_PERM | ARCHIVE_EXTRACT_TIME; ALPM_LOG_FUNC; if((_archive = archive_read_new()) == NULL) RET_ERR(PM_ERR_LIBARCHIVE_ERROR, -1); archive_read_support_compression_all(_archive); archive_read_support_format_all(_archive); if(archive_read_open_file(_archive, archive, ARCHIVE_DEFAULT_BYTES_PER_BLOCK) != ARCHIVE_OK) { _alpm_log(PM_LOG_ERROR, _("could not open %s: %s\n"), archive, archive_error_string(_archive)); RET_ERR(PM_ERR_PKG_OPEN, -1); } while(archive_read_next_header(_archive, &entry) == ARCHIVE_OK) { const char *entryname; /* the name of the file in the archive */ entryname = archive_entry_pathname(entry); if (fn && strcmp(fn, entryname)) { if (archive_read_data_skip(_archive) != ARCHIVE_OK) return(1); continue; } snprintf(expath, PATH_MAX, "%s/%s", prefix, entryname); archive_entry_set_pathname(entry, expath); int ret = archive_read_extract(_archive, entry, archive_flags); if(ret == ARCHIVE_WARN) { /* operation succeeded but a non-critical error was encountered */ _alpm_log(PM_LOG_DEBUG, _("warning extracting %s (%s)\n"), entryname, archive_error_string(_archive)); } else if(ret != ARCHIVE_OK) { _alpm_log(PM_LOG_ERROR, _("could not extract %s (%s)\n"), entryname, archive_error_string(_archive)); return(1); } if(fn) { break; } } archive_read_finish(_archive); return(0); } /* does the same thing as 'rm -rf' */ int _alpm_rmrf(const char *path) { int errflag = 0; struct dirent *dp; DIR *dirp; char name[PATH_MAX]; struct stat st; if(lstat(path, &st) == 0) { if(!S_ISDIR(st.st_mode)) { if(!unlink(path)) { return(0); } else { if(errno == ENOENT) { return(0); } else { return(1); } } } else { if((dirp = opendir(path)) == (DIR *)-1) { return(1); } for(dp = readdir(dirp); dp != NULL; dp = readdir(dirp)) { if(dp->d_ino) { sprintf(name, "%s/%s", path, dp->d_name); if(strcmp(dp->d_name, "..") && strcmp(dp->d_name, ".")) { errflag += _alpm_rmrf(name); } } } closedir(dirp); if(rmdir(path)) { errflag++; } } return(errflag); } return(0); } int _alpm_logaction(unsigned short usesyslog, FILE *f, const char *fmt, va_list args) { int ret = 0; if(usesyslog) { vsyslog(LOG_WARNING, fmt, args); } if(f) { time_t t; struct tm *tm; t = time(NULL); tm = localtime(&t); /* Use ISO-8601 date format */ fprintf(f, "[%04d-%02d-%02d %02d:%02d] ", tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday, tm->tm_hour, tm->tm_min); ret = vfprintf(f, fmt, args); fprintf(f, "\n"); fflush(f); } return(ret); } int _alpm_ldconfig(const char *root) { char line[PATH_MAX]; struct stat buf; snprintf(line, PATH_MAX, "%setc/ld.so.conf", root); if(stat(line, &buf) == 0) { snprintf(line, PATH_MAX, "%ssbin/ldconfig", root); if(stat(line, &buf) == 0) { char cmd[PATH_MAX]; snprintf(cmd, PATH_MAX, "%s -r %s", line, root); system(cmd); } } return(0); } /* convert a time_t to a string - buffer MUST be large enough for * YYYYMMDDHHMMSS - 15 chars */ void _alpm_time2string(time_t t, char *buffer) { if(buffer) { struct tm *lt; lt = localtime(&t); sprintf(buffer, "%4d%02d%02d%02d%02d%02d", lt->tm_year+1900, lt->tm_mon+1, lt->tm_mday, lt->tm_hour, lt->tm_min, lt->tm_sec); buffer[14] = '\0'; } } /* Helper function for comparing strings using the * alpm "compare func" signature */ int _alpm_str_cmp(const void *s1, const void *s2) { return(strcmp(s1, s2)); } /* vim: set ts=2 sw=2 noet: */