mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-11-11 21:53:48 +01:00
27 lines
750 B
C
27 lines
750 B
C
/* Copyright (c) 2001 Matej Pfajfar.
|
|
* Copyright (c) 2001-2004, Roger Dingledine.
|
|
* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
|
|
* Copyright (c) 2007-2017, The Tor Project, Inc. */
|
|
/* See LICENSE for licensing information */
|
|
|
|
#include "or.h"
|
|
#include "buffers.h"
|
|
#include "proto_control0.h"
|
|
|
|
/** Return 1 iff buf looks more like it has an (obsolete) v0 controller
|
|
* command on it than any valid v1 controller command. */
|
|
int
|
|
peek_buf_has_control0_command(buf_t *buf)
|
|
{
|
|
if (buf_datalen(buf) >= 4) {
|
|
char header[4];
|
|
uint16_t cmd;
|
|
peek_from_buf(header, sizeof(header), buf);
|
|
cmd = ntohs(get_uint16(header+2));
|
|
if (cmd <= 0x14)
|
|
return 1; /* This is definitely not a v1 control command. */
|
|
}
|
|
return 0;
|
|
}
|
|
|