From d5536d3eb382fa8a00d5d5820c3d0c947fb90e33 Mon Sep 17 00:00:00 2001 From: David Macek Date: Fri, 17 Apr 2015 17:31:01 +0200 Subject: libalpm: Do a sanity check before manipulating final DB URL The change in commit 9d96bed9d6b57 causes download errors for the .db.sig file in case the final URL for the .db file contains query strings or other unexpected stuff. This commit isn't intended to be a total solution, but it should eliminate the problem in the most obvious cases. Signed-off-by: Allan McRae --- lib/libalpm/be_sync.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) (limited to 'lib') diff --git a/lib/libalpm/be_sync.c b/lib/libalpm/be_sync.c index 45d47004..ea979e6d 100644 --- a/lib/libalpm/be_sync.c +++ b/lib/libalpm/be_sync.c @@ -241,9 +241,16 @@ int SYMEXPORT alpm_db_update(int force, alpm_db_t *db) unlink(sigpath); free(sigpath); - /* if we downloaded a DB, we want the .sig from the same server - - this information is only available from the internal downloader */ - if(handle->fetchcb == NULL) { + + /* check if the final URL from internal downloader looks reasonable */ + if(final_db_url != NULL) { + if(strlen(final_db_url) < 3 || strcmp(final_db_url + strlen(final_db_url) - 3, ".db") != 0) { + final_db_url = NULL; + } + } + + /* if we downloaded a DB, we want the .sig from the same server */ + if(final_db_url != NULL) { /* print final_db_url into a buffer (leave space for .sig) */ len = strlen(final_db_url) + 5; } else { @@ -254,7 +261,7 @@ int SYMEXPORT alpm_db_update(int force, alpm_db_t *db) /* TODO fix leak syncpath and umask unset */ MALLOC(payload.fileurl, len, RET_ERR(handle, ALPM_ERR_MEMORY, -1)); - if(handle->fetchcb == NULL) { + if(final_db_url != NULL) { snprintf(payload.fileurl, len, "%s.sig", final_db_url); } else { snprintf(payload.fileurl, len, "%s/%s.db.sig", server, db->treename); -- cgit v1.2.3-70-g09d2