mirror of
https://gitee.com/openharmony/third_party_nghttp2
synced 2024-11-30 11:30:44 +00:00
58 lines
2.2 KiB
C
58 lines
2.2 KiB
C
/*
|
|
* nghttp2 - HTTP/2 C Library
|
|
*
|
|
* Copyright (c) 2012 Tatsuhiro Tsujikawa
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
#include "nghttp2_npn.h"
|
|
|
|
#include <string.h>
|
|
|
|
static int select_next_protocol(unsigned char **out, unsigned char *outlen,
|
|
const unsigned char *in, unsigned int inlen,
|
|
const char *key, unsigned int keylen) {
|
|
unsigned int i;
|
|
for (i = 0; i + keylen <= inlen; i += (unsigned int)(in[i] + 1)) {
|
|
if (memcmp(&in[i], key, keylen) == 0) {
|
|
*out = (unsigned char *)&in[i + 1];
|
|
*outlen = in[i];
|
|
return 0;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
#define NGHTTP2_HTTP_1_1_ALPN "\x8http/1.1"
|
|
#define NGHTTP2_HTTP_1_1_ALPN_LEN (sizeof(NGHTTP2_HTTP_1_1_ALPN) - 1)
|
|
|
|
int nghttp2_select_next_protocol(unsigned char **out, unsigned char *outlen,
|
|
const unsigned char *in, unsigned int inlen) {
|
|
if (select_next_protocol(out, outlen, in, inlen, NGHTTP2_PROTO_ALPN,
|
|
NGHTTP2_PROTO_ALPN_LEN) == 0) {
|
|
return 1;
|
|
}
|
|
if (select_next_protocol(out, outlen, in, inlen, NGHTTP2_HTTP_1_1_ALPN,
|
|
NGHTTP2_HTTP_1_1_ALPN_LEN) == 0) {
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|