nghttp2/lib/spdylay_helper.c

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/*
* Spdylay - SPDY 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 "spdylay_helper.h"
#include <string.h>
#include "spdylay_net.h"
void spdylay_put_uint16be(uint8_t *buf, uint16_t n)
{
uint16_t x = htons(n);
memcpy(buf, &x, sizeof(uint16_t));
}
void spdylay_put_uint32be(uint8_t *buf, uint32_t n)
{
uint32_t x = htonl(n);
memcpy(buf, &x, sizeof(uint32_t));
}
uint16_t spdylay_get_uint16(const uint8_t *data)
{
uint16_t n;
memcpy(&n, data, sizeof(uint16_t));
return ntohs(n);
}
uint32_t spdylay_get_uint32(const uint8_t *data)
{
uint32_t n;
memcpy(&n, data, sizeof(uint32_t));
return ntohl(n);
}
int spdylay_reserve_buffer(uint8_t **buf_ptr, size_t *buflen_ptr,
size_t min_length)
{
if(min_length > *buflen_ptr) {
uint8_t *temp;
min_length = (min_length+4095)/4096*4096;
temp = malloc(min_length);
if(temp == NULL) {
return SPDYLAY_ERR_NOMEM;
} else {
free(*buf_ptr);
*buf_ptr = temp;
*buflen_ptr = min_length;
}
}
return 0;
}
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const char* spdylay_strerror(int error_code)
{
switch(error_code) {
case SPDYLAY_ERR_INVALID_ARGUMENT:
return "Invalid argument";
case SPDYLAY_ERR_ZLIB:
return "Zlib error";
case SPDYLAY_ERR_UNSUPPORTED_VERSION:
return "Unsupported SPDY version";
case SPDYLAY_ERR_WOULDBLOCK:
return "Operation would block";
case SPDYLAY_ERR_PROTO:
return "Protocol error";
case SPDYLAY_ERR_INVALID_FRAME:
return "Invalid frame octets";
case SPDYLAY_ERR_EOF:
return "EOF";
case SPDYLAY_ERR_DEFERRED:
return "Data transfer deferred";
case SPDYLAY_ERR_STREAM_ID_NOT_AVAILABLE:
return "No more Stream ID available";
case SPDYLAY_ERR_STREAM_CLOSED:
return "Stream was already closed or invalid";
case SPDYLAY_ERR_STREAM_CLOSING:
return "Stream is closing";
case SPDYLAY_ERR_STREAM_SHUT_WR:
return "The transmission is not allowed for this stream";
case SPDYLAY_ERR_INVALID_STREAM_ID:
return "Stream ID is invalid";
case SPDYLAY_ERR_INVALID_STREAM_STATE:
return "Invalid stream state";
case SPDYLAY_ERR_DEFERRED_DATA_EXIST:
return "Another DATA frame has already been deferred";
case SPDYLAY_ERR_SYN_STREAM_NOT_ALLOWED:
return "SYN_STREAM is not allowed";
case SPDYLAY_ERR_GOAWAY_ALREADY_SENT:
return "GOAWAY has already been sent";
case SPDYLAY_ERR_INVALID_HEADER_BLOCK:
return "Invalid header block";
case SPDYLAY_ERR_INVALID_STATE:
return "Invalid state";
case SPDYLAY_ERR_GZIP:
return "Gzip error";
case SPDYLAY_ERR_NOMEM:
return "Out of memory";
case SPDYLAY_ERR_CALLBACK_FAILURE:
return "The user callback function failed";
default:
return "Unknown error code";
}
}