Fix crash in multipart handling

Close cesanta/dev#6974 PUBLISHED_FROM=4d4e4a46eceba10aec8dacb7f8f58bd078c92307

Fix crash in multipart handling
Close cesanta/dev#6974 PUBLISHED_FROM=4d4e4a46eceba10aec8dacb7f8f58bd078c92307
c60fe0c6 · Alexander Alashkin · Deomid Ryabkov · 17cfecc5 · c60fe0c6
Commit c60fe0c6 authored Apr 03, 2017 by Alexander Alashkin Committed by Deomid Ryabkov Apr 11, 2017
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mongoose.c mongoose.c +6 -0

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--- a/mongoose.c
+++ b/mongoose.c
@@ -5879,6 +5879,12 @@ static int mg_http_multipart_wait_for_boundary(struct mg_connection *c) {
  struct mbuf *io = &c->recv_mbuf;
  struct mg_http_proto_data *pd = mg_http_get_proto_data(c);

+  if (pd->mp_stream.boundary == NULL) {
+    pd->mp_stream.state = MPS_FINALIZE;
+    DBG(("Invalid request: boundary not initilaized"));
+    return 0;
+  }
+
  if ((int) io->len < pd->mp_stream.boundary_len + 2) {
    return 0;
  }