Do database signature checking at load time

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.

Note that this implementation is still a bit naive; if a signature is
invalid it is currently impossible to refresh and re-download the file
without manually deleting it first. Similarly, if one downloads a
database and the check fails, the database object is still there and can
be used. These shortcomings will be addressed in a future commit.

Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/lib/libalpm/db.c b/lib/libalpm/db.c
index c3a7abd2..2b50c064 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 */
 	CHECK_HANDLE(handle, 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} */