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-rw-r--r--lib/libalpm/be_files.c5
-rw-r--r--lib/libalpm/delta.c15
2 files changed, 19 insertions, 1 deletions
diff --git a/lib/libalpm/be_files.c b/lib/libalpm/be_files.c
index 0658a661..b9ff6464 100644
--- a/lib/libalpm/be_files.c
+++ b/lib/libalpm/be_files.c
@@ -618,7 +618,10 @@ int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq)
_alpm_strtrim(line);
if(strcmp(line, "%DELTAS%") == 0) {
while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) {
- info->deltas = alpm_list_add(info->deltas, _alpm_delta_parse(line));
+ pmdelta_t *delta = _alpm_delta_parse(line);
+ if(delta) {
+ info->deltas = alpm_list_add(info->deltas, delta);
+ }
}
}
}
diff --git a/lib/libalpm/delta.c b/lib/libalpm/delta.c
index 22d9beb4..8dce7e3b 100644
--- a/lib/libalpm/delta.c
+++ b/lib/libalpm/delta.c
@@ -22,6 +22,8 @@
#include <stdlib.h>
#include <string.h>
#include <limits.h>
+#include <sys/types.h>
+#include <regex.h>
/* libalpm */
#include "delta.h"
@@ -257,6 +259,19 @@ pmdelta_t *_alpm_delta_parse(char *line)
{
pmdelta_t *delta;
char *tmp = line, *tmp2;
+ regex_t reg;
+
+ regcomp(&reg,
+ "^[^[:space:]]* [[:xdigit:]]{32}"
+ " [^[:space:]]* [[:xdigit:]]{32}"
+ " [^[:space:]]* [[:xdigit:]]{32} [[:digit:]]*$",
+ REG_EXTENDED | REG_NOSUB | REG_NEWLINE);
+ if(regexec(&reg, line, 0, 0, 0) != 0) {
+ /* delta line is invalid, return NULL */
+ regfree(&reg);
+ return(NULL);
+ }
+ regfree(&reg);
CALLOC(delta, 1, sizeof(pmdelta_t), RET_ERR(PM_ERR_MEMORY, NULL));