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Fix crash when using external downloader

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Commit 9d96bed9 attempts to use the same effective URL for the db and its
signature download.  However, this information is not available when we use
an external downloader, resulting in a crash.

Fall back to the old method when the effective URL is unavailable.

Signed-off-by: Allan McRae <allan@archlinux.org>
This commit is contained in:
Allan McRae 2014-11-17 17:13:48 +10:00
parent 4c1f41a7c1
commit 8c00dd7341
1 changed files with 17 additions and 4 deletions
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21
lib/libalpm/be_sync.c
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@ -241,12 +241,25 @@ 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 */
/* print final_db_url into a buffer (leave space for .sig) */
len = strlen(final_db_url) + 5;
/* 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) {
/* print final_db_url into a buffer (leave space for .sig) */
len = strlen(final_db_url) + 5;
} else {
/* print server + filename into a buffer (leave space for .sig) */
len = strlen(server) + strlen(db->treename) + 9;
}
/* TODO fix leak syncpath and umask unset */
MALLOC(payload.fileurl, len, RET_ERR(handle, ALPM_ERR_MEMORY, -1));
snprintf(payload.fileurl, len, "%s.sig", final_db_url);
if(handle->fetchcb == NULL) {
snprintf(payload.fileurl, len, "%s.sig", final_db_url);
} else {
snprintf(payload.fileurl, len, "%s/%s.db.sig", server, db->treename);
}
payload.handle = handle;
payload.force = 1;
payload.errors_ok = (level & ALPM_SIG_DATABASE_OPTIONAL);