eina log - handle possible overflow from high mem (last few bytes) or env

fixes CID 1361219
if you had an env var a few gb in size or we had stuff in the last bit
of memory address space this might be an issue, but that won't happen.

@fix

diff --git a/src/lib/eina/eina_log.c b/src/lib/eina/eina_log.c
index c08f93c..65bfbb8 100644 (file)
--- a/src/lib/eina/eina_log.c
+++ b/src/lib/eina/eina_log.c
@@ -1021,9 +1021,12 @@ eina_log_domain_parse_pending_globs(void)
         level = strtol((char *)(end + 1), &tmp, 10);
         if (tmp == (end + 1))
            goto parse_end;
-
+        // If the name of the log is more than 64k it's silly so give up
+        // as it's pointless and in theory could overflow pointer
+        if ((end - start) > 0xffff)
+           break;
         // Parse name
-        p = malloc(sizeof(Eina_Log_Domain_Level_Pending) + end - start + 1);
+        p = malloc(sizeof(Eina_Log_Domain_Level_Pending) + (end - start) + 1);
         if (!p)
            break;