/* * be_files.c * * Copyright (c) 2006 by Christian Hamar <krics@linuxforum.hu> * Copyright (c) 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, see <http://www.gnu.org/licenses/>. */ #include "config.h" #include <unistd.h> #include <stdio.h> #include <stdlib.h> #include <errno.h> #include <string.h> #include <stdint.h> /* uintmax_t */ #include <sys/stat.h> #include <dirent.h> #include <ctype.h> #include <time.h> #include <limits.h> /* PATH_MAX */ #include <locale.h> /* setlocale */ /* libalpm */ #include "db.h" #include "alpm_list.h" #include "log.h" #include "util.h" #include "alpm.h" #include "handle.h" #include "package.h" #include "delta.h" #include "deps.h" /* This function is used to convert the downloaded db file to the proper backend * format */ int _alpm_db_install(pmdb_t *db, const char *dbfile) { ALPM_LOG_FUNC; /* TODO we should not simply unpack the archive, but better parse it and * db_write each entry (see sync_load_dbarchive to get archive content) */ _alpm_log(PM_LOG_DEBUG, "unpacking database '%s'\n", dbfile); if(_alpm_unpack(dbfile, db->path, NULL)) { RET_ERR(PM_ERR_SYSTEM, -1); } return unlink(dbfile); } int _alpm_db_open(pmdb_t *db) { ALPM_LOG_FUNC; if(db == NULL) { RET_ERR(PM_ERR_DB_NULL, -1); } _alpm_log(PM_LOG_DEBUG, "opening database from path '%s'\n", db->path); db->handle = opendir(db->path); if(db->handle == NULL) { RET_ERR(PM_ERR_DB_OPEN, -1); } return(0); } void _alpm_db_close(pmdb_t *db) { ALPM_LOG_FUNC; if(db == NULL) { return; } if(db->handle) { closedir(db->handle); db->handle = NULL; } } void _alpm_db_rewind(pmdb_t *db) { ALPM_LOG_FUNC; if(db == NULL || db->handle == NULL) { return; } rewinddir(db->handle); } static int splitname(const char *target, pmpkg_t *pkg) { /* the format of a db entry is as follows: * package-version-rel/ * package name can contain hyphens, so parse from the back- go back * two hyphens and we have split the version from the name. */ char *tmp, *p, *q; if(target == NULL || pkg == NULL) { return(-1); } STRDUP(tmp, target, RET_ERR(PM_ERR_MEMORY, -1)); p = tmp + strlen(tmp); /* do the magic parsing- find the beginning of the version string * by doing two iterations of same loop to lop off two hyphens */ for(q = --p; *q && *q != '-'; q--); for(p = --q; *p && *p != '-'; p--); if(*p != '-' || p == tmp) { return(-1); } /* copy into fields and return */ if(pkg->version) { FREE(pkg->version); } STRDUP(pkg->version, p+1, RET_ERR(PM_ERR_MEMORY, -1)); /* insert a terminator at the end of the name (on hyphen)- then copy it */ *p = '\0'; if(pkg->name) { FREE(pkg->name); } STRDUP(pkg->name, tmp, RET_ERR(PM_ERR_MEMORY, -1)); free(tmp); return(0); } pmpkg_t *_alpm_db_scan(pmdb_t *db, const char *target) { struct dirent *ent = NULL; struct stat sbuf; char path[PATH_MAX]; char *ptr = NULL; int found = 0; pmpkg_t *pkg = NULL; ALPM_LOG_FUNC; if(db == NULL) { RET_ERR(PM_ERR_DB_NULL, NULL); } /* We loop here until we read a valid package. When an iteration of this loop * fails, it means alpm_db_read failed to read a valid package, so we'll read * the next so as not to abort whole-db operations early */ while(!pkg) { if(target != NULL) { /* search for a specific package (by name only) */ rewinddir(db->handle); while(!found && (ent = readdir(db->handle)) != NULL) { char *name; if(strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0) { continue; } /* stat the entry, make sure it's a directory */ snprintf(path, PATH_MAX, "%s/%s", db->path, ent->d_name); if(stat(path, &sbuf) || !S_ISDIR(sbuf.st_mode)) { continue; } STRDUP(name, ent->d_name, return(NULL)); /* truncate the string at the second-to-last hyphen, */ /* which will give us the package name */ if((ptr = rindex(name, '-'))) { *ptr = '\0'; } if((ptr = rindex(name, '-'))) { *ptr = '\0'; } if(strcmp(name, target) == 0) { found = 1; } FREE(name); } if(!found) { return(NULL); } } else { /* target == NULL, full scan */ int isdir = 0; while(!isdir) { ent = readdir(db->handle); if(ent == NULL) { return(NULL); } if(strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0) { isdir = 0; continue; } /* stat the entry, make sure it's a directory */ snprintf(path, PATH_MAX, "%s/%s", db->path, ent->d_name); if(!stat(path, &sbuf) && S_ISDIR(sbuf.st_mode)) { isdir = 1; } } } pkg = _alpm_pkg_new(NULL, NULL); if(pkg == NULL) { _alpm_log(PM_LOG_DEBUG, "db scan could not find package: %s\n", target); return(NULL); } /* split the db entry name */ if(splitname(ent->d_name, pkg) != 0) { _alpm_log(PM_LOG_ERROR, _("invalid name for database entry '%s'\n"), ent->d_name); alpm_pkg_free(pkg); pkg = NULL; continue; } /* explicitly read with only 'BASE' data, accessors will handle the rest */ if(_alpm_db_read(db, pkg, INFRQ_BASE) == -1) { /* TODO removed corrupt entry from the FS here */ _alpm_pkg_free(pkg); } else { pkg->origin = PKG_FROM_CACHE; pkg->origin_data.db = db; } } return(pkg); } int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq) { FILE *fp = NULL; struct stat buf; char path[PATH_MAX+1]; char line[513]; ALPM_LOG_FUNC; if(db == NULL) { RET_ERR(PM_ERR_DB_NULL, -1); } if(info == NULL || info->name == NULL || info->version == NULL) { _alpm_log(PM_LOG_DEBUG, "invalid package entry provided to _alpm_db_read, skipping\n"); return(-1); } if(info->origin == PKG_FROM_FILE) { _alpm_log(PM_LOG_DEBUG, "request to read database info for a file-based package '%s', skipping...\n", info->name); return(-1); } /* bitmask logic here: * infolevel: 00001111 * inforeq: 00010100 * & result: 00000100 * == to inforeq? nope, we need to load more info. */ if((info->infolevel & inforeq) == inforeq) { /* already loaded this info, do nothing */ return(0); } _alpm_log(PM_LOG_FUNCTION, "loading package data for %s : level=0x%x\n", info->name, inforeq); /* clear out 'line', to be certain - and to make valgrind happy */ memset(line, 0, 513); snprintf(path, PATH_MAX, "%s/%s-%s", db->path, info->name, info->version); if(stat(path, &buf)) { /* directory doesn't exist or can't be opened */ _alpm_log(PM_LOG_DEBUG, "cannot find '%s-%s' in db '%s'\n", info->name, info->version, db->treename); return(-1); } /* DESC */ if(inforeq & INFRQ_DESC) { snprintf(path, PATH_MAX, "%s/%s-%s/desc", db->path, info->name, info->version); if((fp = fopen(path, "r")) == NULL) { _alpm_log(PM_LOG_ERROR, _("could not open file %s: %s\n"), path, strerror(errno)); goto error; } while(!feof(fp)) { if(fgets(line, 256, fp) == NULL) { break; } _alpm_strtrim(line); if(strcmp(line, "%FILENAME%") == 0) { if(fgets(line, 512, fp) == NULL) { goto error; } STRDUP(info->filename, _alpm_strtrim(line), goto error); } else if(strcmp(line, "%DESC%") == 0) { if(fgets(line, 512, fp) == NULL) { goto error; } STRDUP(info->desc, _alpm_strtrim(line), goto error); } else if(strcmp(line, "%GROUPS%") == 0) { while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) { char *linedup; STRDUP(linedup, _alpm_strtrim(line), goto error); info->groups = alpm_list_add(info->groups, linedup); } } else if(strcmp(line, "%URL%") == 0) { if(fgets(line, 512, fp) == NULL) { goto error; } STRDUP(info->url, _alpm_strtrim(line), goto error); } else if(strcmp(line, "%LICENSE%") == 0) { while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) { char *linedup; STRDUP(linedup, _alpm_strtrim(line), goto error); info->licenses = alpm_list_add(info->licenses, linedup); } } else if(strcmp(line, "%ARCH%") == 0) { if(fgets(line, 512, fp) == NULL) { goto error; } STRDUP(info->arch, _alpm_strtrim(line), goto error); } else if(strcmp(line, "%BUILDDATE%") == 0) { if(fgets(line, 512, fp) == NULL) { goto error; } _alpm_strtrim(line); char first = tolower(line[0]); if(first > 'a' && first < 'z') { struct tm tmp_tm = {0}; //initialize to null incase of failure setlocale(LC_TIME, "C"); strptime(line, "%a %b %e %H:%M:%S %Y", &tmp_tm); info->builddate = mktime(&tmp_tm); setlocale(LC_TIME, ""); } else { info->builddate = atol(line); } } else if(strcmp(line, "%INSTALLDATE%") == 0) { if(fgets(line, 512, fp) == NULL) { goto error; } _alpm_strtrim(line); char first = tolower(line[0]); if(first > 'a' && first < 'z') { struct tm tmp_tm = {0}; //initialize to null incase of failure setlocale(LC_TIME, "C"); strptime(line, "%a %b %e %H:%M:%S %Y", &tmp_tm); info->installdate = mktime(&tmp_tm); setlocale(LC_TIME, ""); } else { info->installdate = atol(line); } } else if(strcmp(line, "%PACKAGER%") == 0) { if(fgets(line, 512, fp) == NULL) { goto error; } STRDUP(info->packager, _alpm_strtrim(line), goto error); } else if(strcmp(line, "%REASON%") == 0) { if(fgets(line, 512, fp) == NULL) { goto error; } info->reason = atol(_alpm_strtrim(line)); } else if(strcmp(line, "%SIZE%") == 0 || strcmp(line, "%CSIZE%") == 0) { /* NOTE: the CSIZE and SIZE fields both share the "size" field * in the pkginfo_t struct. This can be done b/c CSIZE * is currently only used in sync databases, and SIZE is * only used in local databases. */ if(fgets(line, 512, fp) == NULL) { goto error; } info->size = atol(_alpm_strtrim(line)); /* also store this value to isize if isize is unset */ if(info->isize == 0) { info->isize = info->size; } } else if(strcmp(line, "%ISIZE%") == 0) { /* ISIZE (installed size) tag only appears in sync repositories, * not the local one. */ if(fgets(line, 512, fp) == NULL) { goto error; } info->isize = atol(_alpm_strtrim(line)); } else if(strcmp(line, "%MD5SUM%") == 0) { /* MD5SUM tag only appears in sync repositories, * not the local one. */ if(fgets(line, 512, fp) == NULL) { goto error; } STRDUP(info->md5sum, _alpm_strtrim(line), goto error); } else if(strcmp(line, "%REPLACES%") == 0) { while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) { char *linedup; STRDUP(linedup, _alpm_strtrim(line), goto error); info->replaces = alpm_list_add(info->replaces, linedup); } } else if(strcmp(line, "%FORCE%") == 0) { info->force = 1; } } fclose(fp); fp = NULL; } /* FILES */ if(inforeq & INFRQ_FILES) { snprintf(path, PATH_MAX, "%s/%s-%s/files", db->path, info->name, info->version); if((fp = fopen(path, "r")) == NULL) { _alpm_log(PM_LOG_ERROR, _("could not open file %s: %s\n"), path, strerror(errno)); goto error; } while(fgets(line, 256, fp)) { _alpm_strtrim(line); if(strcmp(line, "%FILES%") == 0) { while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) { char *linedup; STRDUP(linedup, _alpm_strtrim(line), goto error); info->files = alpm_list_add(info->files, linedup); } } else if(strcmp(line, "%BACKUP%") == 0) { while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) { char *linedup; STRDUP(linedup, _alpm_strtrim(line), goto error); info->backup = alpm_list_add(info->backup, linedup); } } } fclose(fp); fp = NULL; } /* DEPENDS */ if(inforeq & INFRQ_DEPENDS) { snprintf(path, PATH_MAX, "%s/%s-%s/depends", db->path, info->name, info->version); if((fp = fopen(path, "r")) == NULL) { _alpm_log(PM_LOG_ERROR, _("could not open file %s: %s\n"), path, strerror(errno)); goto error; } while(!feof(fp)) { fgets(line, 255, fp); _alpm_strtrim(line); if(strcmp(line, "%DEPENDS%") == 0) { while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) { pmdepend_t *dep = _alpm_splitdep(_alpm_strtrim(line)); info->depends = alpm_list_add(info->depends, dep); } } else if(strcmp(line, "%OPTDEPENDS%") == 0) { while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) { char *linedup; STRDUP(linedup, _alpm_strtrim(line), goto error); info->optdepends = alpm_list_add(info->optdepends, linedup); } } else if(strcmp(line, "%CONFLICTS%") == 0) { while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) { char *linedup; STRDUP(linedup, _alpm_strtrim(line), goto error); info->conflicts = alpm_list_add(info->conflicts, linedup); } } else if(strcmp(line, "%PROVIDES%") == 0) { while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) { char *linedup; STRDUP(linedup, _alpm_strtrim(line), goto error); info->provides = alpm_list_add(info->provides, linedup); } } } fclose(fp); fp = NULL; } /* DELTAS */ if(inforeq & INFRQ_DELTAS) { snprintf(path, PATH_MAX, "%s/%s-%s/deltas", db->path, info->name, info->version); if((fp = fopen(path, "r"))) { while(!feof(fp)) { fgets(line, 255, fp); _alpm_strtrim(line); if(strcmp(line, "%DELTAS%") == 0) { while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) { info->deltas = alpm_list_add(info->deltas, _alpm_delta_parse(line)); } } } fclose(fp); fp = NULL; } } /* INSTALL */ if(inforeq & INFRQ_SCRIPTLET) { snprintf(path, PATH_MAX, "%s/%s-%s/install", db->path, info->name, info->version); if(!stat(path, &buf)) { info->scriptlet = 1; } } /* internal */ info->infolevel |= inforeq; return(0); error: if(fp) { fclose(fp); } return(-1); } int _alpm_db_write(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq) { FILE *fp = NULL; char path[PATH_MAX]; mode_t oldmask; alpm_list_t *lp = NULL; int retval = 0; int local = 0; ALPM_LOG_FUNC; if(db == NULL || info == NULL) { return(-1); } snprintf(path, PATH_MAX, "%s/%s-%s", db->path, info->name, info->version); oldmask = umask(0000); mkdir(path, 0755); /* make sure we have a sane umask */ umask(0022); if(strcmp(db->treename, "local") == 0) { local = 1; } /* DESC */ if(inforeq & INFRQ_DESC) { _alpm_log(PM_LOG_DEBUG, "writing %s-%s DESC information back to db\n", info->name, info->version); snprintf(path, PATH_MAX, "%s/%s-%s/desc", db->path, info->name, info->version); if((fp = fopen(path, "w")) == NULL) { _alpm_log(PM_LOG_ERROR, _("could not open file %s: %s\n"), path, strerror(errno)); retval = -1; goto cleanup; } fprintf(fp, "%%NAME%%\n%s\n\n" "%%VERSION%%\n%s\n\n", info->name, info->version); if(info->desc) { fprintf(fp, "%%DESC%%\n" "%s\n\n", info->desc); } if(info->groups) { fputs("%GROUPS%\n", fp); for(lp = info->groups; lp; lp = lp->next) { fprintf(fp, "%s\n", (char *)lp->data); } fprintf(fp, "\n"); } if(local) { if(info->url) { fprintf(fp, "%%URL%%\n" "%s\n\n", info->url); } if(info->licenses) { fputs("%LICENSE%\n", fp); for(lp = info->licenses; lp; lp = lp->next) { fprintf(fp, "%s\n", (char *)lp->data); } fprintf(fp, "\n"); } if(info->arch) { fprintf(fp, "%%ARCH%%\n" "%s\n\n", info->arch); } if(info->builddate) { fprintf(fp, "%%BUILDDATE%%\n" "%ju\n\n", (uintmax_t)info->builddate); } if(info->installdate) { fprintf(fp, "%%INSTALLDATE%%\n" "%ju\n\n", (uintmax_t)info->installdate); } if(info->packager) { fprintf(fp, "%%PACKAGER%%\n" "%s\n\n", info->packager); } if(info->size) { /* only write installed size, csize is irrelevant once installed */ fprintf(fp, "%%SIZE%%\n" "%lu\n\n", info->isize); } if(info->reason) { fprintf(fp, "%%REASON%%\n" "%u\n\n", info->reason); } } else { if(info->size) { fprintf(fp, "%%CSIZE%%\n" "%lu\n\n", info->size); } if(info->isize) { fprintf(fp, "%%ISIZE%%\n" "%lu\n\n", info->isize); } if(info->md5sum) { fprintf(fp, "%%MD5SUM%%\n" "%s\n\n", info->md5sum); } } fclose(fp); fp = NULL; } /* FILES */ if(local && (inforeq & INFRQ_FILES)) { _alpm_log(PM_LOG_DEBUG, "writing %s-%s FILES information back to db\n", info->name, info->version); snprintf(path, PATH_MAX, "%s/%s-%s/files", db->path, info->name, info->version); if((fp = fopen(path, "w")) == NULL) { _alpm_log(PM_LOG_ERROR, _("could not open file %s: %s\n"), path, strerror(errno)); retval = -1; goto cleanup; } if(info->files) { fprintf(fp, "%%FILES%%\n"); for(lp = info->files; lp; lp = lp->next) { fprintf(fp, "%s\n", (char *)lp->data); } fprintf(fp, "\n"); } if(info->backup) { fprintf(fp, "%%BACKUP%%\n"); for(lp = info->backup; lp; lp = lp->next) { fprintf(fp, "%s\n", (char *)lp->data); } fprintf(fp, "\n"); } fclose(fp); fp = NULL; } /* DEPENDS */ if(inforeq & INFRQ_DEPENDS) { _alpm_log(PM_LOG_DEBUG, "writing %s-%s DEPENDS information back to db\n", info->name, info->version); snprintf(path, PATH_MAX, "%s/%s-%s/depends", db->path, info->name, info->version); if((fp = fopen(path, "w")) == NULL) { _alpm_log(PM_LOG_ERROR, _("could not open file %s: %s\n"), path, strerror(errno)); retval = -1; goto cleanup; } if(info->depends) { fputs("%DEPENDS%\n", fp); for(lp = info->depends; lp; lp = lp->next) { char *depstring = alpm_dep_get_string(lp->data); fprintf(fp, "%s\n", depstring); free(depstring); } fprintf(fp, "\n"); } if(info->optdepends) { fputs("%OPTDEPENDS%\n", fp); for(lp = info->optdepends; lp; lp = lp->next) { fprintf(fp, "%s\n", (char *)lp->data); } fprintf(fp, "\n"); } if(info->conflicts) { fputs("%CONFLICTS%\n", fp); for(lp = info->conflicts; lp; lp = lp->next) { fprintf(fp, "%s\n", (char *)lp->data); } fprintf(fp, "\n"); } if(info->provides) { fputs("%PROVIDES%\n", fp); for(lp = info->provides; lp; lp = lp->next) { fprintf(fp, "%s\n", (char *)lp->data); } fprintf(fp, "\n"); } if(info->replaces) { fputs("%REPLACES%\n", fp); for(lp = info->replaces; lp; lp = lp->next) { fprintf(fp, "%s\n", (char *)lp->data); } fprintf(fp, "\n"); } if(info->force) { /* note the extra newline character, which is necessary! */ fprintf(fp, "%%FORCE%%\n\n"); } fclose(fp); fp = NULL; } /* INSTALL */ /* nothing needed here (script is automatically extracted) */ cleanup: umask(oldmask); if(fp) { fclose(fp); } return(retval); } int _alpm_db_remove(pmdb_t *db, pmpkg_t *info) { char path[PATH_MAX]; ALPM_LOG_FUNC; if(db == NULL || info == NULL) { RET_ERR(PM_ERR_DB_NULL, -1); } snprintf(path, PATH_MAX, "%s%s-%s", db->path, info->name, info->version); if(_alpm_rmrf(path) == -1) { return(-1); } return(0); } /* * Return the last update time as number of seconds from the epoch. * Returns 0 if the value is unknown or can't be read. */ time_t _alpm_db_getlastupdate(const pmdb_t *db) { FILE *fp; char file[PATH_MAX]; time_t ret = 0; ALPM_LOG_FUNC; if(db == NULL) { return(ret); } snprintf(file, PATH_MAX, "%s.lastupdate", db->path); /* get the last update time, if it's there */ if((fp = fopen(file, "r")) == NULL) { return(ret); } else { char line[64]; if(fgets(line, sizeof(line), fp)) { ret = atol(line); } } fclose(fp); return(ret); } /* * writes the dbpath/.lastupdate file with the value in time */ int _alpm_db_setlastupdate(const pmdb_t *db, time_t time) { FILE *fp; char file[PATH_MAX]; int ret = 0; ALPM_LOG_FUNC; if(db == NULL || time == 0) { return(-1); } snprintf(file, PATH_MAX, "%s.lastupdate", db->path); if((fp = fopen(file, "w")) == NULL) { return(-1); } if(fprintf(fp, "%ju", (uintmax_t)time) <= 0) { ret = -1; } fclose(fp); return(ret); } /* vim: set ts=2 sw=2 noet: */