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ws: client: fail server link if masked

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This commit is contained in:
Andy Green 2021-11-10 16:26:18 +00:00
parent c182871358
commit d42a7900d6
1 changed files with 12 additions and 0 deletions
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12
lib/roles/ws/client-parser-ws.c
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@ -177,6 +177,8 @@ int lws_ws_client_rx_sm(struct lws *wsi, unsigned char c)
case LWS_RXPS_04_FRAME_HDR_LEN:
wsi->ws->this_frame_masked = !!(c & 0x80);
if (wsi->ws->this_frame_masked)
goto server_cannot_mask;
switch (c & 0x7f) {
case 126:
@ -674,6 +676,16 @@ already_done:
illegal_ctl_length:
lwsl_wsi_warn(wsi, "Control frame asking for extended length is illegal");
/* kill the connection */
return -1;
server_cannot_mask:
lws_close_reason(wsi,
LWS_CLOSE_STATUS_PROTOCOL_ERR,
(uint8_t *)"srv mask", 8);
lwsl_wsi_warn(wsi, "Server must not mask");
/* kill the connection */
return -1;
}