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autobahn detect disordered continuation

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Signed-off-by: Andy Green <andy.green@linaro.org>
This commit is contained in:
Andy Green 2015-12-28 16:51:08 +08:00
parent 44e0b088fa
commit 977734ee07
2 changed files with 14 additions and 0 deletions
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13
lib/client-parser.c
View file

@ -36,6 +36,16 @@ int lws_client_rx_sm(struct lws *wsi, unsigned char c)
wsi->u.ws.opcode = c & 0xf;
/* revisit if an extension wants them... */
switch (wsi->u.ws.opcode) {
case LWSWSOPC_TEXT_FRAME:
case LWSWSOPC_BINARY_FRAME:
wsi->u.ws.continuation_possible = 1;
break;
case LWSWSOPC_CONTINUATION:
if (!wsi->u.ws.continuation_possible) {
lwsl_info("disordered continuation\n");
return -1;
}
break;
case 3:
case 4:
case 5:
@ -62,6 +72,9 @@ int lws_client_rx_sm(struct lws *wsi, unsigned char c)
return -1;
}
wsi->u.ws.final = !!((c >> 7) & 1);
if (wsi->u.ws.final)
wsi->u.ws.continuation_possible = 0;
if ((wsi->u.ws.opcode & 8) && !wsi->u.ws.final) {
lwsl_info("control message cannot be fragmented\n");
return -1;

1
lib/private-libwebsockets.h
View file

@ -856,6 +856,7 @@ struct _lws_websocket_related {
unsigned int clean_buffer:1; /* buffer not rewritten by extension */
unsigned int payload_is_close:1; /* process as PONG, but it is close */
unsigned int ping_pending_flag:1;
unsigned int continuation_possible:1;
};
struct lws {