From a8b22e16efbffee84ff8647846196958d871c64b Mon Sep 17 00:00:00 2001 From: Allan McRae Date: Wed, 24 Nov 2010 17:22:32 +1000 Subject: Do not reuse old signature After updating a database, remove the old signature to prevent it being used in validation if the new signature fails to download. Signed-off-by: Allan McRae --- lib/libalpm/be_sync.c | 11 +++++++++-- lib/libalpm/signing.c | 2 +- 2 files changed, 10 insertions(+), 3 deletions(-) (limited to 'lib/libalpm') diff --git a/lib/libalpm/be_sync.c b/lib/libalpm/be_sync.c index ed55b3bb..756f784f 100644 --- a/lib/libalpm/be_sync.c +++ b/lib/libalpm/be_sync.c @@ -139,14 +139,21 @@ int SYMEXPORT alpm_db_update(int force, pmdb_t *db) /* Download and check the signature of the database if needed */ if(db->pgp_verify != PM_PGP_VERIFY_NEVER) { - char *sigfile; + char *sigfile, *sigfilepath; int sigret; len = strlen(dbfile) + 5; MALLOC(sigfile, len, RET_ERR(PM_ERR_MEMORY, -1)); sprintf(sigfile, "%s.sig", dbfile); - sigret = _alpm_download_single_file(sigfile, db->servers, syncpath, 1); + /* prevent old signature being used if the following download fails */ + len = strlen(syncpath) + strlen(sigfile) + 1; + MALLOC(sigfilepath, len, RET_ERR(PM_ERR_MEMORY, -1)); + sprintf(sigfilepath, "%s%s", syncpath, sigfile); + _alpm_rmrf(sigfilepath); + free(sigfilepath); + + sigret = _alpm_download_single_file(sigfile, db->servers, syncpath, 0); free(sigfile); if(sigret == -1 && db->pgp_verify == PM_PGP_VERIFY_ALWAYS) { diff --git a/lib/libalpm/signing.c b/lib/libalpm/signing.c index 0434d996..c30650b1 100644 --- a/lib/libalpm/signing.c +++ b/lib/libalpm/signing.c @@ -147,7 +147,7 @@ int _alpm_gpgme_checksig(const char *path, const pmpgpsig_t *sig) err = gpgme_op_verify(ctx, sigdata, filedata, NULL); CHECK_ERR(); result = gpgme_op_verify_result(ctx); - gpgsig = result->signatures; + gpgsig = result->signatures; if (!gpgsig || gpgsig->next) { _alpm_log(PM_LOG_ERROR, _("Unexpected number of signatures\n")); ret = -1; -- cgit v1.2.3-70-g09d2