This is the ideal place to do it as all clients should be checking the return value and ensuring there are no errors. This is similar to pkg_load().
We also add an additional step of validation after we download a new database; a subsequent '-y' operation can potentially invalidate the original check at registration time. Signed-off-by: Dan McGee <[email protected]> --- lib/libalpm/alpm.h | 5 +++- lib/libalpm/be_sync.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++- lib/libalpm/db.c | 5 ++- lib/libalpm/db.h | 3 +- src/pacman/conf.c | 16 ++----------- src/util/cleanupdelta.c | 2 +- src/util/testdb.c | 2 +- test/pacman/pactest.py | 7 ++--- 8 files changed, 72 insertions(+), 24 deletions(-) diff --git a/lib/libalpm/alpm.h b/lib/libalpm/alpm.h index d7ee7d1..1e1bfdd 100644 --- a/lib/libalpm/alpm.h +++ b/lib/libalpm/alpm.h @@ -276,9 +276,12 @@ alpm_list_t *alpm_option_get_syncdbs(pmhandle_t *handle); /** Register a sync database of packages. * @param handle the context handle * @param treename the name of the sync repository + * @param check_sig what level of signature checking to perform on the + * database; note that this must be a '.sig' file type verification * @return a pmdb_t* on success (the value), NULL on error */ -pmdb_t *alpm_db_register_sync(pmhandle_t *handle, const char *treename); +pmdb_t *alpm_db_register_sync(pmhandle_t *handle, const char *treename, + pgp_verify_t check_sig); /** Unregister a package database. * @param db pointer to the package database to unregister diff --git a/lib/libalpm/be_sync.c b/lib/libalpm/be_sync.c index ccc8fdb..c6fee84 100644 --- a/lib/libalpm/be_sync.c +++ b/lib/libalpm/be_sync.c @@ -20,7 +20,9 @@ #include "config.h" +#include <errno.h> #include <sys/stat.h> +#include <unistd.h> /* libarchive */ #include <archive.h> @@ -65,6 +67,37 @@ static char *get_sync_dir(pmhandle_t *handle) return syncpath; } +static int sync_db_validate(pmdb_t *db) +{ + /* this takes into account the default verification level if UNKNOWN + * was assigned to this db */ + pgp_verify_t check_sig = _alpm_db_get_sigverify_level(db); + + if(check_sig != PM_PGP_VERIFY_NEVER) { + int ret; + const char *dbpath = _alpm_db_path(db); + if(!dbpath) { + /* pm_errno set in _alpm_db_path() */ + return -1; + } + + /* we can skip any validation if the database doesn't exist */ + if(access(dbpath, R_OK) != 0 && errno == ENOENT) { + return 0; + } + + _alpm_log(db->handle, PM_LOG_DEBUG, "checking signature for %s\n", + db->treename); + ret = _alpm_gpgme_checksig(db->handle, dbpath, NULL); + if((check_sig == PM_PGP_VERIFY_ALWAYS && ret != 0) || + (check_sig == PM_PGP_VERIFY_OPTIONAL && ret == 1)) { + RET_ERR(db->handle, PM_ERR_SIG_INVALID, -1); + } + } + + return 0; +} + /** Update a package database * * An update of the package database \a db will be attempted. Unless @@ -143,6 +176,15 @@ int SYMEXPORT alpm_db_update(int force, pmdb_t *db) if(ret == 0 && (check_sig == PM_PGP_VERIFY_ALWAYS || check_sig == PM_PGP_VERIFY_OPTIONAL)) { + /* an existing sig file is no good at this point */ + char *sigpath = _alpm_db_sig_path(db); + if(!sigpath) { + ret = -1; + break; + } + unlink(sigpath); + free(sigpath); + int errors_ok = (check_sig == PM_PGP_VERIFY_OPTIONAL); /* if we downloaded a DB, we want the .sig from the same server */ snprintf(fileurl, len, "%s/%s.db.sig", server, db->treename); @@ -172,6 +214,11 @@ int SYMEXPORT alpm_db_update(int force, pmdb_t *db) /* Cache needs to be rebuilt */ _alpm_db_free_pkgcache(db); + if(sync_db_validate(db)) { + /* pm_errno should be set */ + ret = -1; + } + cleanup: free(syncpath); @@ -524,7 +571,8 @@ struct db_operations sync_db_ops = { .version = sync_db_version, }; -pmdb_t *_alpm_db_register_sync(pmhandle_t *handle, const char *treename) +pmdb_t *_alpm_db_register_sync(pmhandle_t *handle, const char *treename, + pgp_verify_t level) { pmdb_t *db; @@ -536,6 +584,12 @@ pmdb_t *_alpm_db_register_sync(pmhandle_t *handle, const char *treename) } db->ops = &sync_db_ops; db->handle = handle; + db->pgp_verify = level; + + if(sync_db_validate(db)) { + _alpm_db_free(db); + return NULL; + } handle->dbs_sync = alpm_list_add(handle->dbs_sync, db); return db; diff --git a/lib/libalpm/db.c b/lib/libalpm/db.c index f26eaae..9c974f5 100644 --- a/lib/libalpm/db.c +++ b/lib/libalpm/db.c @@ -45,7 +45,8 @@ */ /** Register a sync database of packages. */ -pmdb_t SYMEXPORT *alpm_db_register_sync(pmhandle_t *handle, const char *treename) +pmdb_t SYMEXPORT *alpm_db_register_sync(pmhandle_t *handle, const char *treename, + pgp_verify_t check_sig) { /* Sanity checks */ ASSERT(handle != NULL, return NULL); @@ -54,7 +55,7 @@ pmdb_t SYMEXPORT *alpm_db_register_sync(pmhandle_t *handle, const char *treename /* Do not register a database if a transaction is on-going */ ASSERT(handle->trans == NULL, RET_ERR(handle, PM_ERR_TRANS_NOT_NULL, NULL)); - return _alpm_db_register_sync(handle, treename); + return _alpm_db_register_sync(handle, treename, check_sig); } /* Helper function for alpm_db_unregister{_all} */ diff --git a/lib/libalpm/db.h b/lib/libalpm/db.h index e3faeeb..c5fcd5f 100644 --- a/lib/libalpm/db.h +++ b/lib/libalpm/db.h @@ -77,7 +77,8 @@ int _alpm_db_version(pmdb_t *db); int _alpm_db_cmp(const void *d1, const void *d2); alpm_list_t *_alpm_db_search(pmdb_t *db, const alpm_list_t *needles); pmdb_t *_alpm_db_register_local(pmhandle_t *handle); -pmdb_t *_alpm_db_register_sync(pmhandle_t *handle, const char *treename); +pmdb_t *_alpm_db_register_sync(pmhandle_t *handle, const char *treename, + pgp_verify_t level); void _alpm_db_unregister(pmdb_t *db); /* be_*.c, backend specific calls */ diff --git a/src/pacman/conf.c b/src/pacman/conf.c index a5bc148..33ac0b8 100644 --- a/src/pacman/conf.c +++ b/src/pacman/conf.c @@ -460,7 +460,7 @@ static int setup_libalpm(void) ret = alpm_option_set_logfile(handle, config->logfile); if(ret != 0) { pm_printf(PM_LOG_ERROR, _("problem setting logfile '%s' (%s)\n"), - config->logfile, alpm_strerror(alpm_errno(config->handle))); + config->logfile, alpm_strerror(alpm_errno(handle))); return ret; } @@ -470,7 +470,7 @@ static int setup_libalpm(void) ret = alpm_option_set_signaturedir(handle, config->gpgdir); if(ret != 0) { pm_printf(PM_LOG_ERROR, _("problem setting gpgdir '%s' (%s)\n"), - config->gpgdir, alpm_strerror(alpm_errno(config->handle))); + config->gpgdir, alpm_strerror(alpm_errno(handle))); return ret; } @@ -543,7 +543,7 @@ static int finish_section(struct section_t *section, int parse_options) } /* if we are not looking at options sections only, register a db */ - db = alpm_db_register_sync(config->handle, section->name); + db = alpm_db_register_sync(config->handle, section->name, section->sigverify); if(db == NULL) { pm_printf(PM_LOG_ERROR, _("could not register '%s' database (%s)\n"), section->name, alpm_strerror(alpm_errno(config->handle))); @@ -551,16 +551,6 @@ static int finish_section(struct section_t *section, int parse_options) goto cleanup; } - if(section->sigverify) { - if(alpm_db_set_pgp_verify(db, section->sigverify)) { - pm_printf(PM_LOG_ERROR, - _("could not set verify option for database '%s' (%s)\n"), - section->name, alpm_strerror(alpm_errno(config->handle))); - ret = 1; - goto cleanup; - } - } - for(i = section->servers; i; i = alpm_list_next(i)) { char *value = alpm_list_getdata(i); if(_add_mirror(db, value) != 0) { diff --git a/src/util/cleanupdelta.c b/src/util/cleanupdelta.c index 9829170..5ee59db 100644 --- a/src/util/cleanupdelta.c +++ b/src/util/cleanupdelta.c @@ -75,7 +75,7 @@ static void checkdbs(const char *dbpath, alpm_list_t *dbnames) { for(i = dbnames; i; i = alpm_list_next(i)) { char *dbname = alpm_list_getdata(i); snprintf(syncdbpath, PATH_MAX, "%s/sync/%s", dbpath, dbname); - db = alpm_db_register_sync(handle, dbname); + db = alpm_db_register_sync(handle, dbname, PM_PGP_VERIFY_OPTIONAL); if(db == NULL) { fprintf(stderr, "error: could not register sync database (%s)\n", alpm_strerror(alpm_errno(handle))); diff --git a/src/util/testdb.c b/src/util/testdb.c index 0bd7820..f45b4a9 100644 --- a/src/util/testdb.c +++ b/src/util/testdb.c @@ -152,7 +152,7 @@ static int check_syncdbs(alpm_list_t *dbnames) { for(i = dbnames; i; i = alpm_list_next(i)) { char *dbname = alpm_list_getdata(i); - db = alpm_db_register_sync(handle, dbname); + db = alpm_db_register_sync(handle, dbname, PM_PGP_VERIFY_OPTIONAL); if(db == NULL) { fprintf(stderr, "error: could not register sync database (%s)\n", alpm_strerror(alpm_errno(handle))); diff --git a/test/pacman/pactest.py b/test/pacman/pactest.py index 77f87da..deb338f 100755 --- a/test/pacman/pactest.py +++ b/test/pacman/pactest.py @@ -113,13 +113,12 @@ def createOptParser(): env.run() env.results() - if env.failed > 0: - print "pacman testing root saved: %s" % root_path - sys.exit(1) - if not opts.keeproot: shutil.rmtree(root_path) else: print "pacman testing root saved: %s" % root_path + if env.failed > 0: + sys.exit(1) + # vim: set ts=4 sw=4 et: -- 1.7.5.2
