compression: add logging for overflow condition

OpenSIPS · Sep 22, 2021 · a5b6d2e · a5b6d2e
1 parent 6ed68a5
commit a5b6d2e
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/modules/compression/compression.c b/modules/compression/compression.c
@@ -950,6 +950,10 @@ static int mc_compact_cb(char** buf_p, mc_whitelist_p wh_list, int type, int* ol
 	memcpy(*buf_p, new_buf.s, new_buf.len);
 	*olen = new_buf.len;
 
+	if (new_buf.len > msg_total_len)
+		LM_BUG("buffer overflow: "\
+			"calculated=%d, actual=%d\n", msg_total_len, new_buf.len);
+
 	/* Free the vector */
 	pkg_free(hdr_mask);