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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <axutil_http_chunked_stream.h>
#include <axutil_string.h>
#include <string.h>
#include <stdlib.h>
#define AXIS2_HTTP_CRLF "\r\n"
struct axutil_http_chunked_stream
{
axutil_stream_t *stream;
int current_chunk_size;
int unread_len;
axis2_bool_t end_of_chunks;
axis2_bool_t chunk_started;
};
static axis2_status_t
axutil_http_chunked_stream_start_chunk(
axutil_http_chunked_stream_t * chunked_stream,
const axutil_env_t *env);
AXIS2_EXTERN axutil_http_chunked_stream_t *AXIS2_CALL
axutil_http_chunked_stream_create(
const axutil_env_t *env,
axutil_stream_t *stream)
{
axutil_http_chunked_stream_t *chunked_stream = NULL;
AXIS2_PARAM_CHECK(env->error, stream, NULL);
chunked_stream = (axutil_http_chunked_stream_t *)AXIS2_MALLOC(env->allocator,
sizeof(axutil_http_chunked_stream_t));
if(!chunked_stream)
{
AXIS2_ERROR_SET(env->error, AXIS2_ERROR_NO_MEMORY, AXIS2_FAILURE);
AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI, "Out of memory");
return NULL;
}
chunked_stream->stream = stream;
chunked_stream->current_chunk_size = -1;
chunked_stream->unread_len = -1;
chunked_stream->end_of_chunks = AXIS2_FALSE;
chunked_stream->chunk_started = AXIS2_FALSE;
return chunked_stream;
}
AXIS2_EXTERN void AXIS2_CALL
axutil_http_chunked_stream_free(
axutil_http_chunked_stream_t *chunked_stream,
const axutil_env_t *env)
{
AXIS2_FREE(env->allocator, chunked_stream);
}
AXIS2_EXTERN int AXIS2_CALL
axutil_http_chunked_stream_read(
axutil_http_chunked_stream_t *chunked_stream,
const axutil_env_t *env,
void *buffer,
size_t count)
{
int len = -1;
int yet_to_read = 0;
axutil_stream_t *stream = chunked_stream->stream;
if(!buffer)
{
return -1;
}
if(!stream)
{
AXIS2_ERROR_SET(env->error, AXIS2_ERROR_NULL_STREAM_IN_CHUNKED_STREAM, AXIS2_FAILURE);
return -1;
}
if(AXIS2_TRUE == chunked_stream->end_of_chunks)
{
return 0;
}
if(AXIS2_FALSE == chunked_stream->chunk_started)
{
axutil_http_chunked_stream_start_chunk(chunked_stream, env);
}
yet_to_read = (int)count;
/* We are sure that the difference lies within the int range */
while(AXIS2_FALSE == chunked_stream->end_of_chunks && yet_to_read > 0)
{
if(chunked_stream->unread_len < yet_to_read)
{
len = axutil_stream_read(chunked_stream->stream, env, (axis2_char_t *)buffer + count
- yet_to_read, chunked_stream->unread_len);
yet_to_read -= len;
chunked_stream->unread_len -= len;
if(chunked_stream->unread_len <= 0)
{
axutil_http_chunked_stream_start_chunk(chunked_stream, env);
}
}
else
{
len = axutil_stream_read(chunked_stream->stream, env, (axis2_char_t *)buffer + count
- yet_to_read, yet_to_read);
yet_to_read -= len;
chunked_stream->unread_len -= len;
}
}
return ((int)count - yet_to_read);
/* We are sure that the difference lies within the int range */
}
AXIS2_EXTERN int AXIS2_CALL
axutil_http_chunked_stream_write(
axutil_http_chunked_stream_t *chunked_stream,
const axutil_env_t *env,
const void *buffer,
size_t count)
{
axutil_stream_t *stream = chunked_stream->stream;
int len = -1;
axis2_char_t tmp_buf[10];
if(!buffer)
{
return -1;
}
if(!stream)
{
AXIS2_ERROR_SET(env->error, AXIS2_ERROR_NULL_STREAM_IN_CHUNKED_STREAM, AXIS2_FAILURE);
return -1;
}
sprintf(tmp_buf, "%x%s", (unsigned int)count, AXIS2_HTTP_CRLF);
axutil_stream_write(stream, env, tmp_buf, axutil_strlen(tmp_buf));
len = axutil_stream_write(stream, env, buffer, count);
axutil_stream_write(stream, env, AXIS2_HTTP_CRLF, 2);
return len;
}
AXIS2_EXTERN int AXIS2_CALL
axutil_http_chunked_stream_get_current_chunk_size(
const axutil_http_chunked_stream_t *chunked_stream,
const axutil_env_t *env)
{
return chunked_stream->current_chunk_size;
}
static axis2_status_t
axutil_http_chunked_stream_start_chunk(
axutil_http_chunked_stream_t *chunked_stream,
const axutil_env_t *env)
{
axis2_char_t tmp_buf[3] = "";
axis2_char_t str_chunk_len[512] = "";
axis2_char_t *tmp = NULL;
int read = -1;
/* remove the last CRLF of the previous chunk if any */
if(AXIS2_TRUE == chunked_stream->chunk_started)
{
read = axutil_stream_read(chunked_stream->stream, env, tmp_buf, 2);
chunked_stream->chunk_started = AXIS2_FALSE;
}
/* read the len and chunk extension */
while((read = axutil_stream_read(chunked_stream->stream, env, tmp_buf, 1)) > 0)
{
tmp_buf[read] = '\0';
strcat(str_chunk_len, tmp_buf);
if(0 != strstr(str_chunk_len, AXIS2_HTTP_CRLF))
{
break;
}
}
/* check whether we have extensions */
tmp = strchr(str_chunk_len, ';');
if(tmp)
{
/* we don't use extensions right now */
*tmp = '\0';
}
chunked_stream->current_chunk_size = strtol(str_chunk_len, NULL, 16);
if(0 == chunked_stream->current_chunk_size)
{
/* Read the last CRLF */
read = axutil_stream_read(chunked_stream->stream, env, tmp_buf, 2);
chunked_stream->end_of_chunks = AXIS2_TRUE;
}
else
{
chunked_stream->chunk_started = AXIS2_TRUE;
chunked_stream->unread_len = chunked_stream->current_chunk_size;
}
return AXIS2_SUCCESS;
}
AXIS2_EXTERN axis2_status_t AXIS2_CALL
axutil_http_chunked_stream_write_last_chunk(
axutil_http_chunked_stream_t *chunked_stream,
const axutil_env_t *env)
{
axutil_stream_t *stream = NULL;
stream = chunked_stream->stream;
if(axutil_stream_write(stream, env, "0\r\n\r\n", 5) == 5)
{
return AXIS2_SUCCESS;
}
return AXIS2_FAILURE;
}
AXIS2_EXTERN axis2_bool_t AXIS2_CALL
axutil_http_chunked_stream_get_end_of_chunks(
axutil_http_chunked_stream_t *chunked_stream,
const axutil_env_t *env)
{
return chunked_stream->end_of_chunks;
}
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