/* * 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. */ #if defined(__APPLE__) || defined(__OpenBSD__) #include <sys/syslimits.h> #endif #if defined(__APPLE__) || defined(__OpenBSD__) || defined(__sun__) #include <sys/stat.h> #endif #include "config.h" #include <stdio.h> #include <stdlib.h> #ifdef __sun__ #include <alloca.h> #endif #include <stdarg.h> #include <string.h> #include <unistd.h> #include <errno.h> #include <fcntl.h> #include <ctype.h> #include <dirent.h> #include <time.h> #include <syslog.h> #include <sys/wait.h> #include <libintl.h> #ifdef CYGWIN #include <limits.h> /* PATH_MAX */ #endif #include <sys/statvfs.h> #ifndef __sun__ #include <mntent.h> #endif #include <regex.h> /* pacman */ #include "log.h" #include "list.h" #include "trans.h" #include "sync.h" #include "util.h" #include "error.h" #include "alpm.h" #ifdef __sun__ /* This is a replacement for strsep which is not portable (missing on Solaris). * Copyright (c) 2001 by Fran�ois 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 = mktemp(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(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); return(1); } } } } FREE(orig); umask(oldmask); return(0); } int _alpm_copyfile(char *src, 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); } while((len = fread(buf, 1, 4096, in))) { fwrite(buf, 1, len, out); } fclose(in); 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 = (char *)(str + (strlen(str) - 1)); while(isspace((int)*pch)) { pch--; } *++pch = '\0'; return(str); } /* Create a lock file */ int _alpm_lckmk(char *file) { int fd, count = 0; char *dir, *ptr; /* 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); } } return(fd > 0 ? fd : -1); } /* Remove a lock file */ int _alpm_lckrm(char *file) { 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]; 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) RET_ERR(PM_ERR_PKG_OPEN, -1); while (archive_read_next_header (_archive, &entry) == ARCHIVE_OK) { if (fn && strcmp (fn, archive_entry_pathname (entry))) { if (archive_read_data_skip (_archive) != ARCHIVE_OK) return(1); continue; } snprintf(expath, PATH_MAX, "%s/%s", prefix, archive_entry_pathname (entry)); archive_entry_set_pathname (entry, expath); if (archive_read_extract (_archive, entry, ARCHIVE_EXTRACT_FLAGS) != ARCHIVE_OK) { fprintf(stderr, _("could not extract %s: %s\n"), archive_entry_pathname (entry), 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(char *path) { int errflag = 0; struct dirent *dp; DIR *dirp; char name[PATH_MAX]; struct stat st; if(stat(path, &st) == 0) { if(S_ISREG(st.st_mode)) { if(!unlink(path)) { return(0); } else { if(errno == ENOENT) { return(0); } else { /* not a directory */ return(1); } } } else if(S_ISDIR(st.st_mode)) { 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 char usesyslog, FILE *f, char *fmt, ...) { char msg[1024]; va_list args; va_start(args, fmt); vsnprintf(msg, 1024, fmt, args); va_end(args); if(usesyslog) { syslog(LOG_WARNING, "%s", msg); } if(f) { time_t t; struct tm *tm; t = time(NULL); tm = localtime(&t); fprintf(f, "[%02d/%02d/%02d %02d:%02d] %s\n", tm->tm_mon+1, tm->tm_mday, tm->tm_year-100, tm->tm_hour, tm->tm_min, msg); } return(0); } int _alpm_ldconfig(char *root) { char line[PATH_MAX]; struct stat buf; snprintf(line, PATH_MAX, "%setc/ld.so.conf", root); if(!stat(line, &buf)) { snprintf(line, PATH_MAX, "%ssbin/ldconfig", root); if(!stat(line, &buf)) { char cmd[PATH_MAX]; snprintf(cmd, PATH_MAX, "%s -r %s", line, root); system(cmd); } } return(0); } /* A cheap grep for text files, returns 1 if a substring * was found in the text file fn, 0 if it wasn't */ static int grep(const char *fn, const char *needle) { FILE *fp; if((fp = fopen(fn, "r")) == NULL) { return(0); } while(!feof(fp)) { char line[1024]; fgets(line, 1024, fp); if(feof(fp)) { continue; } if(strstr(line, needle)) { fclose(fp); return(1); } } fclose(fp); return(0); } int _alpm_runscriptlet(char *root, char *installfn, char *script, char *ver, char *oldver, pmtrans_t *trans) { char scriptfn[PATH_MAX]; char cmdline[PATH_MAX]; char tmpdir[PATH_MAX] = ""; char *scriptpath; struct stat buf; char cwd[PATH_MAX] = ""; pid_t pid; int retval = 0; if(stat(installfn, &buf)) { /* not found */ return(0); } if(!strcmp(script, "pre_upgrade") || !strcmp(script, "pre_install")) { snprintf(tmpdir, PATH_MAX, "%stmp/", root); if(stat(tmpdir, &buf)) { _alpm_makepath(tmpdir); } snprintf(tmpdir, PATH_MAX, "%stmp/alpm_XXXXXX", root); if(mkdtemp(tmpdir) == NULL) { _alpm_log(PM_LOG_ERROR, _("could not create temp directory")); return(1); } _alpm_unpack(installfn, tmpdir, ".INSTALL"); snprintf(scriptfn, PATH_MAX, "%s/.INSTALL", tmpdir); /* chop off the root so we can find the tmpdir in the chroot */ scriptpath = scriptfn + strlen(root) - 1; } else { STRNCPY(scriptfn, installfn, PATH_MAX); /* chop off the root so we can find the tmpdir in the chroot */ scriptpath = scriptfn + strlen(root) - 1; } if(!grep(scriptfn, script)) { /* script not found in scriptlet file */ goto cleanup; } /* save the cwd so we can restore it later */ if(getcwd(cwd, PATH_MAX) == NULL) { _alpm_log(PM_LOG_ERROR, _("could not get current working directory")); /* in case of error, cwd content is undefined: so we set it to something */ cwd[0] = 0; } /* just in case our cwd was removed in the upgrade operation */ if(chdir(root) != 0) { _alpm_log(PM_LOG_ERROR, _("could not change directory to %s (%s)"), root, strerror(errno)); } _alpm_log(PM_LOG_FLOW2, _("executing %s script..."), script); if(oldver) { snprintf(cmdline, PATH_MAX, "source %s %s %s %s", scriptpath, script, ver, oldver); } else { snprintf(cmdline, PATH_MAX, "source %s %s %s", scriptpath, script, ver); } _alpm_log(PM_LOG_DEBUG, "%s", cmdline); pid = fork(); if(pid == -1) { _alpm_log(PM_LOG_ERROR, _("could not fork a new process (%s)"), strerror(errno)); retval = 1; goto cleanup; } if(pid == 0) { FILE *pp; _alpm_log(PM_LOG_DEBUG, _("chrooting in %s"), root); if(chroot(root) != 0) { _alpm_log(PM_LOG_ERROR, _("could not change the root directory (%s)"), strerror(errno)); return(1); } if(chdir("/") != 0) { _alpm_log(PM_LOG_ERROR, _("could not change directory to / (%s)"), strerror(errno)); return(1); } umask(0022); _alpm_log(PM_LOG_DEBUG, _("executing \"%s\""), cmdline); pp = popen(cmdline, "r"); if(!pp) { _alpm_log(PM_LOG_ERROR, _("call to popen failed (%s)"), strerror(errno)); retval = 1; goto cleanup; } while(!feof(pp)) { char line[1024]; if(fgets(line, 1024, pp) == NULL) break; /* "START <event desc>" */ if((strlen(line) > strlen(STARTSTR)) && !strncmp(line, STARTSTR, strlen(STARTSTR))) { EVENT(trans, PM_TRANS_EVT_SCRIPTLET_START, _alpm_strtrim(line + strlen(STARTSTR)), NULL); /* "DONE <ret code>" */ } else if((strlen(line) > strlen(DONESTR)) && !strncmp(line, DONESTR, strlen(DONESTR))) { EVENT(trans, PM_TRANS_EVT_SCRIPTLET_DONE, (void*)atol(_alpm_strtrim(line + strlen(DONESTR))), NULL); } else { EVENT(trans, PM_TRANS_EVT_SCRIPTLET_INFO, _alpm_strtrim(line), NULL); } } pclose(pp); exit(0); } else { if(waitpid(pid, 0, 0) == -1) { _alpm_log(PM_LOG_ERROR, _("call to waitpid failed (%s)"), strerror(errno)); retval = 1; goto cleanup; } } cleanup: if(strlen(tmpdir) && _alpm_rmrf(tmpdir)) { _alpm_log(PM_LOG_WARNING, _("could not remove tmpdir %s"), tmpdir); } if(strlen(cwd)) { chdir(cwd); } return(retval); } #ifndef __sun__ static long long get_freespace() { struct mntent *mnt; char *table = MOUNTED; FILE *fp; long long ret=0; fp = setmntent (table, "r"); if(!fp) return(-1); while ((mnt = getmntent (fp))) { struct statvfs64 buf; statvfs64(mnt->mnt_dir, &buf); ret += buf.f_bavail * buf.f_bsize; } return(ret); } int _alpm_check_freespace(pmtrans_t *trans, pmlist_t **data) { pmlist_t *i; long long pkgsize=0, freespace; for(i = trans->packages; i; i = i->next) { if(trans->type == PM_TRANS_TYPE_SYNC) { pmsyncpkg_t *sync = i->data; if(sync->type != PM_SYNC_TYPE_REPLACE) { pmpkg_t *pkg = sync->pkg; pkgsize += pkg->usize; } } else { pmpkg_t *pkg = i->data; pkgsize += pkg->size; } } freespace = get_freespace(); _alpm_log(PM_LOG_DEBUG, _("check_freespace: total pkg size: %lld, disk space: %lld"), pkgsize, freespace); if(pkgsize > freespace) { if(data) { long long *ptr; if((ptr = (long long*)malloc(sizeof(long long)))==NULL) { _alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %d bytes"), sizeof(long long)); pm_errno = PM_ERR_MEMORY; return(-1); } *ptr = pkgsize; *data = _alpm_list_add(*data, ptr); if((ptr = (long long*)malloc(sizeof(long long)))==NULL) { _alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %d bytes"), sizeof(long long)); FREELIST(*data); pm_errno = PM_ERR_MEMORY; return(-1); } *ptr = freespace; *data = _alpm_list_add(*data, ptr); } pm_errno = PM_ERR_DISK_FULL; return(-1); } else { return(0); } } #endif /* match a string against a regular expression */ int _alpm_reg_match(char *string, char *pattern) { int result; regex_t reg; if(regcomp(®, pattern, REG_EXTENDED | REG_NOSUB | REG_ICASE) != 0) { RET_ERR(PM_ERR_INVALID_REGEX, -1); } result = regexec(®, string, 0, 0, 0); regfree(®); return(!(result)); } /* 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'; } } /* vim: set ts=2 sw=2 noet: */