websocketsession添加防御代码

2019-09-25 13:48:33 +08:00 · 2019-09-25 13:48:33 +08:00 · 98af57041d
commit 98af57041d
parent ee4ceec3d9
1 changed files with 3 additions and 0 deletions
--- a/a8/websocketsession.cc
+++ b/a8/websocketsession.cc
@ -191,6 +191,9 @@ namespace a8

    void WebSocketSession::DecodeFrame(char* buf, int& offset, unsigned int buflen)
    {
+        if (offset + 2 < buflen) {
+            return;
+        }
        char* real_buf = buf + offset;
        unsigned int ava_len = buflen - offset;
        char header = real_buf[0];