From 24abcddc574be22b82095ea647209e072080764a Mon Sep 17 00:00:00 2001 From: Dave Reisner Date: Sun, 7 Jul 2013 19:52:13 -0400 Subject: be_sync: avoid crashing on files in the root of a DB If a sync DB is malformed and contains entries in the root of the archive, load_pkg_for_entry will leave the 'filename' variable empty, leading to a crash in the ensuing strcmp() calls which determine the DB fragment being examined. While this isn't a read error, this should be reported to the user so that it can be addressed by the creator of the DB. As seen: https://bbs.archlinux.org/viewtopic.php?pid=1297766 Signed-off-by: Dave Reisner --- lib/libalpm/be_sync.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'lib') diff --git a/lib/libalpm/be_sync.c b/lib/libalpm/be_sync.c index bd68739f..0b996843 100644 --- a/lib/libalpm/be_sync.c +++ b/lib/libalpm/be_sync.c @@ -562,6 +562,14 @@ static int sync_db_read(alpm_db_t *db, struct archive *archive, return -1; } + if(filename == NULL) { + /* A file exists outside of a subdirectory. This isn't a read error, so return + * success and try to continue on. */ + _alpm_log(db->handle, ALPM_LOG_WARNING, _("unknown database file: %s\n"), + filename); + return 0; + } + if(strcmp(filename, "desc") == 0 || strcmp(filename, "depends") == 0 || (strcmp(filename, "deltas") == 0 && db->handle->deltaratio > 0.0) ) { int ret; -- cgit v1.2.3-24-g4f1b