/*
belle-sip - SIP (RFC3261) library.
Copyright (C) 2014 Belledonne Communications SARL
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see .
*/
#include "belle_sip_internal.h"
#include "bctoolbox/vfs.h"
#ifdef HAVE_ZLIB
#include "zlib.h"
#endif
/*
* Body handler base class implementation
*/
struct belle_sip_body_handler{
belle_sip_object_t base;
belle_sip_body_handler_progress_callback_t progress_cb;
size_t expected_size; /* 0 if unknown*/
size_t transfered_size;
belle_sip_list_t *headers; /**> used when this body is part of a multipart message to store the header of this part */
char *headerStringBuffer; /**> buffer populated with a string created from marshaling the headers */
void *user_data;
};
static void belle_sip_body_handler_clone(belle_sip_body_handler_t *obj, const belle_sip_body_handler_t *orig){
obj->progress_cb=orig->progress_cb;
obj->user_data=orig->user_data;
obj->expected_size=orig->expected_size;
obj->transfered_size=orig->transfered_size;
obj->headers=belle_sip_list_copy_with_data(orig->headers,(void *(*)(void*))belle_sip_object_clone_and_ref);
if (orig->headerStringBuffer!=NULL) {
obj->headerStringBuffer = strdup(orig->headerStringBuffer);
}
}
static void belle_sip_body_handler_destroy(belle_sip_body_handler_t *obj){
belle_sip_list_free_with_data(obj->headers,belle_sip_object_unref);
belle_sip_free(obj->headerStringBuffer);
}
static belle_sip_error_code belle_sip_body_handler_marshal(belle_sip_body_handler_t *obj, char *buff, size_t buff_size, size_t *offset) {
int ret;
size_t len;
if (*offset == 0) belle_sip_body_handler_begin_send_transfer(obj);
do {
len = buff_size - *offset;
ret = belle_sip_body_handler_send_chunk(obj, NULL, (uint8_t*)buff + *offset, &len);
*offset += len;
} while ((ret == BELLE_SIP_CONTINUE) && (len > 0));
if ((ret == BELLE_SIP_CONTINUE) || (ret == BELLE_SIP_BUFFER_OVERFLOW)) return BELLE_SIP_BUFFER_OVERFLOW;
if (ret == BELLE_SIP_STOP) belle_sip_body_handler_end_transfer(obj);
return BELLE_SIP_OK;
}
BELLE_SIP_DECLARE_NO_IMPLEMENTED_INTERFACES(belle_sip_body_handler_t);
BELLE_SIP_INSTANCIATE_CUSTOM_VPTR_BEGIN(belle_sip_body_handler_t)
{
BELLE_SIP_VPTR_INIT(belle_sip_body_handler_t,belle_sip_object_t,TRUE),
(belle_sip_object_destroy_t) belle_sip_body_handler_destroy,
(belle_sip_object_clone_t) belle_sip_body_handler_clone,
(belle_sip_object_marshal_t) belle_sip_body_handler_marshal,
(belle_sip_object_on_first_ref_t) NULL,
(belle_sip_object_on_last_ref_t) NULL,
BELLE_SIP_DEFAULT_BUFSIZE_HINT
},
NULL, /* begin_recv_transfer */
NULL, /* begin_send_transfer */
NULL, /* end_transfer */
NULL, /*chunk_recv*/
NULL /*chunk_send*/
BELLE_SIP_INSTANCIATE_CUSTOM_VPTR_END
void belle_sip_body_handler_init(belle_sip_body_handler_t *obj, belle_sip_body_handler_progress_callback_t progress_cb, void *user_data){
obj->user_data=user_data;
obj->progress_cb=progress_cb;
obj->headers = NULL; /* header is not used in most of the case, set it using a dedicated function if needed */
obj->headerStringBuffer = NULL; /* header string buffer is set when adding a body handler to a multipart body handler */
}
void belle_sip_body_handler_add_header(belle_sip_body_handler_t *obj, belle_sip_header_t *header) {
if (header != NULL) {
obj->headers=belle_sip_list_append(obj->headers,belle_sip_object_ref(header));
}
}
void belle_sip_body_handler_remove_header_from_ptr(belle_sip_body_handler_t *obj, belle_sip_header_t* header) {
belle_sip_list_t* it = belle_sip_list_find(obj->headers, header);
if (it) {
belle_sip_object_unref(header);
obj->headers = belle_sip_list_delete_link(obj->headers, it);
}
}
const belle_sip_list_t* belle_sip_body_handler_get_headers(const belle_sip_body_handler_t *obj) {
return obj->headers;
}
size_t belle_sip_body_handler_get_size(const belle_sip_body_handler_t *obj){
return obj->expected_size;
}
void belle_sip_body_handler_set_size(belle_sip_body_handler_t *obj, size_t size){
obj->expected_size=size;
}
size_t belle_sip_body_handler_get_transfered_size(const belle_sip_body_handler_t *obj){
return obj->transfered_size;
}
static void update_progress(belle_sip_body_handler_t *obj, belle_sip_message_t *msg){
belle_sip_debug("body handler [%p] : %llu bytes exchanged of %llu ", obj, (unsigned long long)obj->transfered_size, (unsigned long long)obj->expected_size);
if (obj->progress_cb)
obj->progress_cb(obj,msg,obj->user_data,obj->transfered_size,obj->expected_size);
}
void belle_sip_body_handler_begin_recv_transfer(belle_sip_body_handler_t *obj){
BELLE_SIP_OBJECT_VPTR_TYPE(belle_sip_body_handler_t) *vptr = BELLE_SIP_OBJECT_VPTR(obj, belle_sip_body_handler_t);
if (vptr->begin_recv_transfer != NULL) {
vptr->begin_recv_transfer(obj);
}
obj->transfered_size=0;
}
void belle_sip_body_handler_begin_send_transfer(belle_sip_body_handler_t *obj) {
BELLE_SIP_OBJECT_VPTR_TYPE(belle_sip_body_handler_t) *vptr = BELLE_SIP_OBJECT_VPTR(obj, belle_sip_body_handler_t);
if (vptr->begin_send_transfer != NULL) {
vptr->begin_send_transfer(obj);
}
obj->transfered_size = 0;
}
void belle_sip_body_handler_recv_chunk(belle_sip_body_handler_t *obj, belle_sip_message_t *msg, uint8_t *buf, size_t size){
BELLE_SIP_OBJECT_VPTR(obj,belle_sip_body_handler_t)->chunk_recv(obj,msg,(off_t)obj->transfered_size,buf,size);
obj->transfered_size+=size;
update_progress(obj,msg);
}
int belle_sip_body_handler_send_chunk(belle_sip_body_handler_t *obj, belle_sip_message_t *msg, uint8_t *buf, size_t *size){
int ret;
size_t to_send = *size;
if (obj->expected_size!=0){
to_send=MIN(*size,obj->expected_size-obj->transfered_size);
}
if (to_send==0 && obj->transfered_size==obj->expected_size) {
// An eWouldBlock error added a call to the function, nothing to send so return
// In some case to_send=0 because not buffer is available but sendings not finished.
belle_sip_message("body handler [%p] : Nothing to send",obj);
*size=0;
return BELLE_SIP_STOP;
}
ret=BELLE_SIP_OBJECT_VPTR(obj,belle_sip_body_handler_t)->chunk_send(obj,msg,(off_t)obj->transfered_size,buf,&to_send);
obj->transfered_size+=to_send;
*size=to_send;
update_progress(obj,msg);
if (obj->expected_size!=0){
if (obj->transfered_size==obj->expected_size) {
return BELLE_SIP_STOP;
}
if (ret==BELLE_SIP_STOP && obj->transfered_sizeexpected_size){
belle_sip_error("body handler [%p] transfered only [%i] bytes while [%i] were expected",obj,
(int)obj->transfered_size,(int)obj->expected_size);
}
}
return ret;
}
void belle_sip_body_handler_end_transfer(belle_sip_body_handler_t *obj){
BELLE_SIP_OBJECT_VPTR_TYPE(belle_sip_body_handler_t) *vptr = BELLE_SIP_OBJECT_VPTR(obj, belle_sip_body_handler_t);
if (vptr->end_transfer != NULL) {
vptr->end_transfer(obj);
}
if (obj->expected_size==0)
obj->expected_size=obj->transfered_size;
}
/*
* memory body handler implementation.
**/
struct belle_sip_memory_body_handler{
belle_sip_body_handler_t base;
uint8_t *buffer;
uint8_t encoding_applied;
};
static void belle_sip_memory_body_handler_destroy(belle_sip_memory_body_handler_t *obj){
if (obj->buffer) belle_sip_free(obj->buffer);
}
static void belle_sip_memory_body_handler_clone(belle_sip_memory_body_handler_t *obj, const belle_sip_memory_body_handler_t *orig){
if (orig->buffer) {
obj->buffer=belle_sip_malloc(orig->base.expected_size+1);
memcpy(obj->buffer,orig->buffer,orig->base.expected_size);
obj->buffer[orig->base.expected_size]='\0';
}
obj->encoding_applied = orig->encoding_applied;
}
static void belle_sip_memory_body_handler_recv_chunk(belle_sip_body_handler_t *base, belle_sip_message_t *msg, off_t offset, uint8_t *buf, size_t size){
belle_sip_memory_body_handler_t *obj=(belle_sip_memory_body_handler_t*)base;
obj->buffer=belle_sip_realloc(obj->buffer,offset+size+1);
memcpy(obj->buffer+offset,buf,size);
obj->buffer[offset+size]='\0';
}
static int belle_sip_memory_body_handler_send_chunk(belle_sip_body_handler_t *base, belle_sip_message_t *msg, off_t offset, uint8_t *buf, size_t *size){
belle_sip_memory_body_handler_t *obj=(belle_sip_memory_body_handler_t*)base;
size_t to_send=MIN(*size,obj->base.expected_size-offset);
if (obj->buffer == NULL) return BELLE_SIP_STOP;
memcpy(buf,obj->buffer+offset,to_send);
*size=to_send;
return (obj->base.expected_size-offset==*size) ? BELLE_SIP_STOP : BELLE_SIP_CONTINUE;
}
BELLE_SIP_DECLARE_NO_IMPLEMENTED_INTERFACES(belle_sip_memory_body_handler_t);
BELLE_SIP_INSTANCIATE_CUSTOM_VPTR_BEGIN(belle_sip_memory_body_handler_t)
{
{
BELLE_SIP_VPTR_INIT(belle_sip_memory_body_handler_t,belle_sip_body_handler_t,TRUE),
(belle_sip_object_destroy_t) belle_sip_memory_body_handler_destroy,
(belle_sip_object_clone_t)belle_sip_memory_body_handler_clone,
NULL,
BELLE_SIP_DEFAULT_BUFSIZE_HINT
},
NULL,
NULL,
NULL,
belle_sip_memory_body_handler_recv_chunk,
belle_sip_memory_body_handler_send_chunk
}
BELLE_SIP_INSTANCIATE_CUSTOM_VPTR_END
void *belle_sip_memory_body_handler_get_buffer(const belle_sip_memory_body_handler_t *obj){
return obj->buffer;
}
void belle_sip_memory_body_handler_set_buffer(belle_sip_memory_body_handler_t *obj, void *buffer) {
if (obj->buffer != NULL) belle_sip_free(obj->buffer);
obj->buffer = (uint8_t *)buffer;
}
#define BELLE_SIP_MEMORY_BODY_HANDLER_MINIMUM_DEFLATE_INPUT_SIZE 256
#define BELLE_SIP_MEMORY_BODY_HANDLER_ZLIB_INITIAL_SIZE 2048
int belle_sip_memory_body_handler_apply_encoding(belle_sip_memory_body_handler_t *obj, const char *encoding) {
if (obj->encoding_applied == TRUE)
return 0;
if (!obj->buffer || (belle_sip_body_handler_get_size(BELLE_SIP_BODY_HANDLER(obj)) < BELLE_SIP_MEMORY_BODY_HANDLER_MINIMUM_DEFLATE_INPUT_SIZE))
return -1;
#ifdef HAVE_ZLIB
if (strcmp(encoding, "deflate") == 0) {
z_stream strm;
size_t initial_size = belle_sip_body_handler_get_size(BELLE_SIP_BODY_HANDLER(obj));
size_t final_size;
unsigned int avail_out = BELLE_SIP_MEMORY_BODY_HANDLER_ZLIB_INITIAL_SIZE;
unsigned int outbuf_size = avail_out;
unsigned char *outbuf = belle_sip_malloc(outbuf_size);
unsigned char *outbuf_ptr = outbuf;
int ret;
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
ret = deflateInit(&strm, Z_DEFAULT_COMPRESSION);
if (ret != Z_OK) {
belle_sip_free(outbuf);
return -1;
}
strm.avail_in = (uInt)initial_size;
strm.next_in = obj->buffer;
do {
if (avail_out < BELLE_SIP_MEMORY_BODY_HANDLER_ZLIB_INITIAL_SIZE) {
unsigned int cursize = (unsigned int)(outbuf_ptr - outbuf);
outbuf_size *= 2;
outbuf = belle_sip_realloc(outbuf, outbuf_size);
outbuf_ptr = outbuf + cursize;
}
strm.avail_out = avail_out;
strm.next_out = outbuf_ptr;
deflate(&strm, Z_FINISH);
outbuf_ptr += avail_out - strm.avail_out;
avail_out = outbuf_size - (unsigned int)(outbuf_ptr - outbuf);
} while (strm.avail_out == 0);
deflateEnd(&strm);
final_size = outbuf_ptr - outbuf;
if ((final_size + 27) >= initial_size) { // 27 is the size of the Content-Encoding header
belle_sip_message("Body not compressed because its size would have increased");
belle_sip_free(outbuf);
return -1;
}
belle_sip_message("Body has been compressed: %u->%u:\n%s", (unsigned int)initial_size, (unsigned int)final_size, obj->buffer);
belle_sip_free(obj->buffer);
obj->buffer = outbuf;
belle_sip_body_handler_set_size(BELLE_SIP_BODY_HANDLER(obj), final_size);
obj->encoding_applied = TRUE;
return 0;
} else
#endif
{
belle_sip_warning("%s: unknown encoding '%s'", __FUNCTION__, encoding);
return -1;
}
}
int belle_sip_memory_body_handler_unapply_encoding(belle_sip_memory_body_handler_t *obj, const char *encoding) {
if (obj->buffer == NULL) return -1;
#ifdef HAVE_ZLIB
if (strcmp(encoding, "deflate") == 0) {
z_stream strm;
size_t initial_size = belle_sip_body_handler_get_size(BELLE_SIP_BODY_HANDLER(obj));
size_t final_size;
unsigned int avail_out = BELLE_SIP_MEMORY_BODY_HANDLER_ZLIB_INITIAL_SIZE;
unsigned int outbuf_size = avail_out;
unsigned char *outbuf = belle_sip_malloc(outbuf_size);
unsigned char *outbuf_ptr = outbuf;
bool_t outbuf_too_small = FALSE;
int ret;
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
strm.avail_in = 0;
strm.next_in = Z_NULL;
ret = inflateInit(&strm);
if (ret != Z_OK) return -1;
strm.avail_in = (uInt)initial_size;
strm.next_in = obj->buffer;
do {
if ((avail_out < BELLE_SIP_MEMORY_BODY_HANDLER_ZLIB_INITIAL_SIZE) || (outbuf_too_small == TRUE)) {
unsigned int cursize = (unsigned int)(outbuf_ptr - outbuf);
unsigned int increase = outbuf_size;
outbuf_size *= 2;
outbuf = belle_sip_realloc(outbuf, outbuf_size);
outbuf_ptr = outbuf + cursize;
avail_out += increase;
}
outbuf_too_small = FALSE;
strm.avail_out = avail_out;
strm.next_out = outbuf_ptr;
ret = inflate(&strm, Z_NO_FLUSH);
switch (ret) {
case Z_OK:
/* Error handling for truncated input buffer. Z_STREAM_END is not returned but there is no further input content */
if (strm.avail_out > 0) {
belle_sip_error("%s: truncated compressed body. Cannot uncompress it...", __FUNCTION__);
return -1;
}
break;
case Z_STREAM_END:
// Everything is ok, continue
break;
case Z_BUF_ERROR:
// Ask for more output space
outbuf_too_small = TRUE;
break;
case Z_NEED_DICT:
case Z_DATA_ERROR:
case Z_STREAM_ERROR:
case Z_MEM_ERROR:
default:
inflateEnd(&strm);
belle_sip_free(outbuf);
return -1;
}
outbuf_ptr += avail_out - strm.avail_out;
avail_out = outbuf_size - (unsigned int)(outbuf_ptr - outbuf);
} while (ret != Z_STREAM_END);
inflateEnd(&strm);
final_size = outbuf_ptr - outbuf;
if (final_size == outbuf_size) {
/* If not enough space get it to be able to put the final NULL character. */
outbuf = belle_sip_realloc(outbuf, outbuf_size + 1);
outbuf_ptr = outbuf + final_size;
}
*outbuf_ptr = '\0';
belle_sip_message("Body has been uncompressed: %u->%u:\n%s", (unsigned int)initial_size, (unsigned int)final_size, outbuf);
belle_sip_free(obj->buffer);
obj->buffer = outbuf;
belle_sip_body_handler_set_size(BELLE_SIP_BODY_HANDLER(obj), final_size);
return 0;
} else
#endif
{
belle_sip_warning("%s: unknown encoding '%s'", __FUNCTION__, encoding);
return -1;
}
}
belle_sip_memory_body_handler_t *belle_sip_memory_body_handler_new(belle_sip_body_handler_progress_callback_t cb, void *user_data){
belle_sip_memory_body_handler_t *obj=belle_sip_object_new(belle_sip_memory_body_handler_t);
belle_sip_body_handler_init((belle_sip_body_handler_t*)obj,cb,user_data);
return obj;
}
belle_sip_memory_body_handler_t *belle_sip_memory_body_handler_new_from_buffer(void *buffer, size_t bufsize, belle_sip_body_handler_progress_callback_t cb, void *user_data){
belle_sip_memory_body_handler_t *obj=belle_sip_object_new(belle_sip_memory_body_handler_t);
belle_sip_body_handler_init((belle_sip_body_handler_t*)obj,cb,user_data);
obj->buffer=(uint8_t*)buffer;
obj->base.expected_size=bufsize;
return obj;
}
belle_sip_memory_body_handler_t *belle_sip_memory_body_handler_new_copy_from_buffer(const void *buffer, size_t bufsize, belle_sip_body_handler_progress_callback_t cb, void *user_data){
belle_sip_memory_body_handler_t *obj=belle_sip_object_new(belle_sip_memory_body_handler_t);
belle_sip_body_handler_init((belle_sip_body_handler_t*)obj,cb,user_data);
obj->buffer=(uint8_t*)belle_sip_malloc(bufsize+1);
obj->buffer[bufsize]='\0';
obj->base.expected_size=bufsize;
memcpy(obj->buffer,buffer,bufsize);
return obj;
}
/*
* User body handler implementation
*/
struct belle_sip_user_body_handler{
belle_sip_body_handler_t base;
belle_sip_user_body_handler_start_callback_t start_cb;
belle_sip_user_body_handler_recv_callback_t recv_cb;
belle_sip_user_body_handler_send_callback_t send_cb;
belle_sip_user_body_handler_stop_callback_t stop_cb;
};
static void belle_sip_user_body_handler_begin_transfer(belle_sip_body_handler_t *base) {
belle_sip_user_body_handler_t *obj = (belle_sip_user_body_handler_t *)base;
if (obj->start_cb)
obj->start_cb((belle_sip_user_body_handler_t*)base, base->user_data);
}
static void belle_sip_user_body_handler_end_transfer(belle_sip_body_handler_t *base) {
belle_sip_user_body_handler_t *obj = (belle_sip_user_body_handler_t *)base;
if (obj->stop_cb)
obj->stop_cb((belle_sip_user_body_handler_t*)base, base->user_data);
}
static void belle_sip_user_body_handler_recv_chunk(belle_sip_body_handler_t *base, belle_sip_message_t *msg, off_t offset, uint8_t *buf, size_t size){
belle_sip_user_body_handler_t *obj=(belle_sip_user_body_handler_t*)base;
if (obj->recv_cb)
obj->recv_cb((belle_sip_user_body_handler_t*)base, msg, base->user_data, offset, buf, size);
else belle_sip_warning("belle_sip_user_body_handler_t ignoring received chunk.");
}
static int belle_sip_user_body_handler_send_chunk(belle_sip_body_handler_t *base, belle_sip_message_t *msg, off_t offset, uint8_t *buf, size_t *size){
belle_sip_user_body_handler_t *obj=(belle_sip_user_body_handler_t*)base;
if (obj->send_cb)
return obj->send_cb((belle_sip_user_body_handler_t*)base, msg, base->user_data, offset, buf, size);
else belle_sip_warning("belle_sip_user_body_handler_t ignoring send chunk.");
*size=0;
return BELLE_SIP_STOP;
}
static void belle_sip_user_body_handler_clone(belle_sip_user_body_handler_t *obj, const belle_sip_user_body_handler_t *orig){
obj->start_cb=orig->start_cb;
obj->recv_cb=orig->recv_cb;
obj->send_cb=orig->send_cb;
obj->stop_cb=orig->stop_cb;
}
BELLE_SIP_DECLARE_NO_IMPLEMENTED_INTERFACES(belle_sip_user_body_handler_t);
BELLE_SIP_INSTANCIATE_CUSTOM_VPTR_BEGIN(belle_sip_user_body_handler_t)
{
{
BELLE_SIP_VPTR_INIT(belle_sip_user_body_handler_t,belle_sip_body_handler_t,TRUE),
(belle_sip_object_destroy_t) NULL,
(belle_sip_object_clone_t)belle_sip_user_body_handler_clone,
NULL,
BELLE_SIP_DEFAULT_BUFSIZE_HINT
},
belle_sip_user_body_handler_begin_transfer,
belle_sip_user_body_handler_begin_transfer,
belle_sip_user_body_handler_end_transfer,
belle_sip_user_body_handler_recv_chunk,
belle_sip_user_body_handler_send_chunk
}
BELLE_SIP_INSTANCIATE_CUSTOM_VPTR_END
belle_sip_user_body_handler_t *belle_sip_user_body_handler_new(
size_t total_size,
belle_sip_body_handler_progress_callback_t progress_cb,
belle_sip_user_body_handler_start_callback_t start_cb,
belle_sip_user_body_handler_recv_callback_t recv_cb,
belle_sip_user_body_handler_send_callback_t send_cb,
belle_sip_user_body_handler_stop_callback_t stop_cb,
void *data){
belle_sip_user_body_handler_t * obj=belle_sip_object_new(belle_sip_user_body_handler_t);
belle_sip_body_handler_init((belle_sip_body_handler_t*)obj,progress_cb,data);
obj->base.expected_size=total_size;
obj->start_cb=start_cb;
obj->recv_cb=recv_cb;
obj->send_cb=send_cb;
obj->stop_cb=stop_cb;
return obj;
}
/**
* File body handler implementation
**/
struct belle_sip_file_body_handler{
belle_sip_body_handler_t base;
char *filepath;
bctbx_vfs_file_t *file;
belle_sip_user_body_handler_t *user_bh;
};
static void belle_sip_file_body_handler_destroy(belle_sip_file_body_handler_t *obj) {
if (obj->filepath) belle_sip_free(obj->filepath);
if (obj->file) {
ssize_t ret;
ret = bctbx_file_close(obj->file);
if (ret == BCTBX_VFS_ERROR) {
bctbx_error("Can't close file %s", obj->filepath);
}
obj->file = NULL;
}
if (obj->user_bh) {
belle_sip_object_unref(obj->user_bh);
obj->user_bh = NULL;
}
}
static void belle_sip_file_body_handler_clone(belle_sip_file_body_handler_t *obj, const belle_sip_file_body_handler_t *orig) {
obj->filepath = belle_sip_strdup(orig->filepath);
obj->file = orig->file;
obj->user_bh = orig->user_bh;
if (obj->user_bh) {
belle_sip_object_ref(obj->user_bh);
}
}
static void belle_sip_file_body_handler_begin_recv_transfer(belle_sip_body_handler_t *base) {
belle_sip_file_body_handler_t *obj = (belle_sip_file_body_handler_t *)base;
bctbx_vfs_t *vfs = bctbx_vfs_get_default();
if (obj->filepath == NULL) return;
obj->file = bctbx_file_open(vfs, obj->filepath, "r+");
if (!obj->file) {
bctbx_error("Can't open file %s", obj->filepath);
}
if (obj->user_bh && obj->user_bh->start_cb) {
obj->user_bh->start_cb((belle_sip_user_body_handler_t*)&(obj->user_bh->base), obj->user_bh->base.user_data);
}
}
static void belle_sip_file_body_handler_begin_send_transfer(belle_sip_body_handler_t *base) {
belle_sip_file_body_handler_t *obj = (belle_sip_file_body_handler_t *)base;
bctbx_vfs_t *vfs = bctbx_vfs_get_default();
if (obj->filepath == NULL) return;
obj->file = bctbx_file_open(vfs, obj->filepath, "r");
if (!obj->file) {
bctbx_error("Can't open file %s", obj->filepath);
}
if (obj->user_bh && obj->user_bh->start_cb) {
obj->user_bh->start_cb((belle_sip_user_body_handler_t*)&(obj->user_bh->base), obj->user_bh->base.user_data);
}
}
static void belle_sip_file_body_handler_end_transfer(belle_sip_body_handler_t *base) {
belle_sip_file_body_handler_t *obj = (belle_sip_file_body_handler_t *)base;
if (obj->user_bh && obj->user_bh->stop_cb) {
obj->user_bh->stop_cb((belle_sip_user_body_handler_t*)&(obj->user_bh->base), obj->user_bh->base.user_data);
}
if (obj->file) {
ssize_t ret;
ret = bctbx_file_close(obj->file);
if (ret == BCTBX_VFS_ERROR) {
bctbx_error("Can't close file %s", obj->filepath);
}
obj->file = NULL;
}
}
static void belle_sip_file_body_handler_recv_chunk(belle_sip_body_handler_t *base, belle_sip_message_t *msg, off_t offset, uint8_t *buf, size_t size) {
belle_sip_file_body_handler_t *obj = (belle_sip_file_body_handler_t *)base;
ssize_t ret;
if (obj->file == NULL) return;
if (obj->user_bh && obj->user_bh->recv_cb) {
obj->user_bh->recv_cb((belle_sip_user_body_handler_t*)&(obj->user_bh->base), msg, obj->user_bh->base.user_data, offset, buf, size);
}
ret = bctbx_file_write(obj->file, buf, size, offset);
if (ret == BCTBX_VFS_ERROR) {
bctbx_error("File body handler recv write error at offset %lu", (unsigned long)offset);
}
}
static int belle_sip_file_body_handler_send_chunk(belle_sip_body_handler_t *base, belle_sip_message_t *msg, off_t offset, uint8_t *buf, size_t *size) {
belle_sip_file_body_handler_t *obj = (belle_sip_file_body_handler_t *)base;
ssize_t size_t_ret;
size_t to_send = MIN(*size, obj->base.expected_size - offset);
if (obj->file == NULL) return BELLE_SIP_STOP;
size_t_ret = bctbx_file_read(obj->file, buf, to_send, offset);
if (size_t_ret == BCTBX_VFS_ERROR) {
bctbx_error("File body handler send read error at offset %lu", (unsigned long)offset);
return BELLE_SIP_STOP;
}
*size = (size_t)size_t_ret;
if (obj->user_bh && obj->user_bh->send_cb) {
int result = obj->user_bh->send_cb((belle_sip_user_body_handler_t*)&(obj->user_bh->base), msg, obj->user_bh->base.user_data, offset, buf, size);
if (result == BELLE_SIP_STOP) return result;
}
return (((obj->base.expected_size - offset) == (size_t)size_t_ret) || (*size == 0)) ? BELLE_SIP_STOP : BELLE_SIP_CONTINUE;
}
BELLE_SIP_DECLARE_NO_IMPLEMENTED_INTERFACES(belle_sip_file_body_handler_t);
BELLE_SIP_INSTANCIATE_CUSTOM_VPTR_BEGIN(belle_sip_file_body_handler_t)
{
{
BELLE_SIP_VPTR_INIT(belle_sip_file_body_handler_t,belle_sip_body_handler_t,TRUE),
(belle_sip_object_destroy_t) belle_sip_file_body_handler_destroy,
(belle_sip_object_clone_t)belle_sip_file_body_handler_clone,
NULL,
BELLE_SIP_DEFAULT_BUFSIZE_HINT
},
belle_sip_file_body_handler_begin_recv_transfer,
belle_sip_file_body_handler_begin_send_transfer,
belle_sip_file_body_handler_end_transfer,
belle_sip_file_body_handler_recv_chunk,
belle_sip_file_body_handler_send_chunk
}
BELLE_SIP_INSTANCIATE_CUSTOM_VPTR_END
belle_sip_file_body_handler_t *belle_sip_file_body_handler_new(const char *filepath, belle_sip_body_handler_progress_callback_t progress_cb, void *data) {
struct stat statbuf;
belle_sip_file_body_handler_t *obj = belle_sip_object_new(belle_sip_file_body_handler_t);
belle_sip_body_handler_init((belle_sip_body_handler_t*)obj, progress_cb, data);
obj->filepath = belle_sip_strdup(filepath);
obj->user_bh = NULL;
if (stat(obj->filepath, &statbuf) == 0) {
obj->base.expected_size = statbuf.st_size;
}
return obj;
}
size_t belle_sip_file_body_handler_get_file_size(belle_sip_file_body_handler_t *file_bh) {
return file_bh->base.expected_size;
}
void belle_sip_file_body_handler_set_user_body_handler(belle_sip_file_body_handler_t *file_bh, belle_sip_user_body_handler_t *user_bh) {
if (file_bh) {
file_bh->user_bh = user_bh;
belle_sip_object_ref(file_bh->user_bh);
}
}
/*
* Multipart body handler implementation
* TODO
**/
struct belle_sip_multipart_body_handler{
belle_sip_body_handler_t base;
belle_sip_list_t *parts;
belle_sip_list_t *transfer_current_part;
char *boundary;
uint8_t *buffer;
unsigned int related;
};
GET_SET_BOOL(belle_sip_multipart_body_handler,related,is);
static void belle_sip_multipart_body_handler_destroy(belle_sip_multipart_body_handler_t *obj){
belle_sip_list_free_with_data(obj->parts,belle_sip_object_unref);
if (obj->buffer != NULL) belle_sip_free(obj->buffer);
if (obj->boundary != NULL) belle_sip_free(obj->boundary);
}
static void belle_sip_multipart_body_handler_clone(belle_sip_multipart_body_handler_t *obj){
obj->parts=belle_sip_list_copy_with_data(obj->parts,(void *(*)(void*))belle_sip_object_clone_and_ref);
}
static void belle_sip_multipart_body_handler_begin_recv_transfer(belle_sip_body_handler_t *obj) {
const belle_sip_list_t *it;
belle_sip_multipart_body_handler_t *obj_multipart = (belle_sip_multipart_body_handler_t *)obj;
for (it = obj_multipart->parts; it != NULL; it = it->next) {
belle_sip_body_handler_t *bh = BELLE_SIP_BODY_HANDLER(it->data);
belle_sip_body_handler_begin_recv_transfer(bh);
}
obj_multipart->transfer_current_part = obj_multipart->parts;
}
static void belle_sip_multipart_body_handler_begin_send_transfer(belle_sip_body_handler_t *obj) {
const belle_sip_list_t *it;
belle_sip_multipart_body_handler_t *obj_multipart = (belle_sip_multipart_body_handler_t *)obj;
for (it = obj_multipart->parts; it != NULL; it = it->next) {
belle_sip_body_handler_t *bh = BELLE_SIP_BODY_HANDLER(it->data);
belle_sip_body_handler_begin_send_transfer(bh);
}
obj_multipart->transfer_current_part = obj_multipart->parts;
}
static void belle_sip_multipart_body_handler_end_transfer(belle_sip_body_handler_t *obj) {
const belle_sip_list_t *it;
belle_sip_multipart_body_handler_t *obj_multipart = (belle_sip_multipart_body_handler_t *)obj;
for (it = obj_multipart->parts; it != NULL; it = it->next) {
belle_sip_body_handler_t *bh = BELLE_SIP_BODY_HANDLER(it->data);
belle_sip_body_handler_end_transfer(bh);
}
obj_multipart->transfer_current_part = NULL;
}
static void belle_sip_multipart_body_handler_recv_chunk(belle_sip_body_handler_t *obj, belle_sip_message_t *msg, off_t offset,
uint8_t *buffer, size_t size){
/* Store the whole buffer, the parts will be split when belle_sip_multipart_body_handler_progress_cb() is called with transfered size equal to expected size. */
belle_sip_multipart_body_handler_t *obj_multipart = (belle_sip_multipart_body_handler_t *)obj;
obj_multipart->buffer = belle_sip_realloc(obj_multipart->buffer,offset + size + 1);
memcpy(obj_multipart->buffer + offset, buffer, size);
obj_multipart->buffer[offset + size] = '\0';
}
static int belle_sip_multipart_body_handler_send_chunk(belle_sip_body_handler_t *obj, belle_sip_message_t *msg, off_t offset,
uint8_t *buffer, size_t *size){
belle_sip_multipart_body_handler_t *obj_multipart=(belle_sip_multipart_body_handler_t*)obj;
if (obj_multipart->transfer_current_part->data) { /* we have a part, get its content from handler */
int retval = BELLE_SIP_STOP;
size_t offsetSize = 0; /* used to store size of data added by this function and not given by the body handler of current part */
size_t boundary_len = strlen(obj_multipart->boundary);
belle_sip_body_handler_t *current_part = (belle_sip_body_handler_t *)obj_multipart->transfer_current_part->data;
*size -= strlen(obj_multipart->boundary) + 8; /* just in case it will be the end of the message, ask for less characters than possible in order to be able to add the multipart message termination. 8 is for "\r\n--" and "--\r\n" */
if (current_part->transfered_size == 0) { /* Nothing transfered yet on this part, include a separator and the header if exists */
size_t headersSize = 0;
if (current_part != (belle_sip_body_handler_t *)obj_multipart->parts->data) {
offsetSize += 2; /*delimiter := CRLF dash-boundary*/
}
offsetSize += boundary_len + 4; /* 4 is for "--" and "\r\n" */
if (current_part->headerStringBuffer != NULL) {
headersSize = strlen(current_part->headerStringBuffer);
}
/* check if buffer is large enough to get the whole header + separtor and at least a byte of data */
if (*size < headersSize+offsetSize+1) {
return BELLE_SIP_BUFFER_OVERFLOW;
}
/* insert separator */
if (current_part != (belle_sip_body_handler_t *)obj_multipart->parts->data) {
snprintf((char*)buffer, *size, "\r\n--%s\r\n",obj_multipart->boundary); /*delimiter := CRLF dash-boundary*/
} else {
snprintf((char*)buffer, *size, "--%s\r\n",obj_multipart->boundary);
}
/* insert part header */
if (headersSize!=0) {
memcpy(buffer+offsetSize, current_part->headerStringBuffer, headersSize);
offsetSize += headersSize;
}
*size -=offsetSize; /* decrease data length requested to the current part handler */
}
retval = belle_sip_body_handler_send_chunk(current_part, msg, buffer+offsetSize, size); /* add offsetSize to the buffer address in order to point at the begining of free space (after header if included) */
*size +=offsetSize; /* restore total of data given including potential separator and header */
if (retval == BELLE_SIP_CONTINUE) {
return BELLE_SIP_CONTINUE; /* there is still data to be sent, continue */
} else { /* this part has reach the end, pass to next one if there is one */
if (obj_multipart->transfer_current_part->next!=NULL) { /* there is an other part to be sent */
obj_multipart->transfer_current_part = belle_sip_list_next(obj_multipart->transfer_current_part);
return BELLE_SIP_CONTINUE;
} else { /* there is nothing else, close the message and return STOP */
size_t boundary_len = strlen(obj_multipart->boundary);
memcpy(buffer + *size, "\r\n--", 4);
memcpy(buffer + *size + 4, obj_multipart->boundary, boundary_len);
memcpy(buffer + *size + 4 + boundary_len, "--\r\n", 4);
*size+=boundary_len + 8;
return BELLE_SIP_STOP;
}
}
}
return BELLE_SIP_STOP;
}
BELLE_SIP_DECLARE_NO_IMPLEMENTED_INTERFACES(belle_sip_multipart_body_handler_t);
BELLE_SIP_INSTANCIATE_CUSTOM_VPTR_BEGIN(belle_sip_multipart_body_handler_t)
{
{
BELLE_SIP_VPTR_INIT(belle_sip_multipart_body_handler_t,belle_sip_body_handler_t,TRUE),
(belle_sip_object_destroy_t) belle_sip_multipart_body_handler_destroy,
(belle_sip_object_clone_t)belle_sip_multipart_body_handler_clone,
NULL,
BELLE_SIP_DEFAULT_BUFSIZE_HINT
},
belle_sip_multipart_body_handler_begin_recv_transfer,
belle_sip_multipart_body_handler_begin_send_transfer,
belle_sip_multipart_body_handler_end_transfer,
belle_sip_multipart_body_handler_recv_chunk,
belle_sip_multipart_body_handler_send_chunk
}
BELLE_SIP_INSTANCIATE_CUSTOM_VPTR_END
static void belle_sip_multipart_body_handler_set_boundary(belle_sip_multipart_body_handler_t *obj, const char *boundary) {
if (obj->boundary != NULL) {
belle_sip_free(obj->boundary);
}
if (boundary != NULL) {
obj->boundary = belle_sip_strdup(boundary);
} else {
obj->boundary = belle_sip_strdup(BELLESIP_MULTIPART_BOUNDARY);
}
}
const char *belle_sip_multipart_body_handler_get_boundary(const belle_sip_multipart_body_handler_t *obj) {
return obj->boundary;
}
belle_sip_multipart_body_handler_t *belle_sip_multipart_body_handler_new(belle_sip_body_handler_progress_callback_t progress_cb, void *data,
belle_sip_body_handler_t *first_part, const char *boundary){
belle_sip_multipart_body_handler_t *obj=belle_sip_object_new(belle_sip_multipart_body_handler_t);
belle_sip_body_handler_init((belle_sip_body_handler_t*)obj,progress_cb,data);
belle_sip_multipart_body_handler_set_boundary(obj, boundary);
obj->base.expected_size = strlen(obj->boundary) + 8; /* body's length will be part length(including boundary) + multipart end. 8 is for "\r\n--" and "--\r\n" */
if (first_part) belle_sip_multipart_body_handler_add_part(obj,first_part);
return obj;
}
belle_sip_multipart_body_handler_t *belle_sip_multipart_body_handler_new_from_buffer(const void *buffer, size_t bufsize, const char *boundary) {
belle_sip_multipart_body_handler_t *obj_multipart = belle_sip_object_new(belle_sip_multipart_body_handler_t);
belle_sip_body_handler_t *obj = (belle_sip_body_handler_t *)obj_multipart;
belle_sip_body_handler_init((belle_sip_body_handler_t *)obj, belle_sip_multipart_body_handler_progress_cb, NULL);
belle_sip_multipart_body_handler_set_boundary(obj_multipart, boundary);
obj_multipart->base.expected_size = bufsize;
belle_sip_body_handler_begin_recv_transfer(obj);
belle_sip_body_handler_recv_chunk(obj, NULL, (uint8_t *)buffer, bufsize);
belle_sip_body_handler_end_transfer(obj);
return obj_multipart;
}
#define DEFAULT_HEADER_STRING_SIZE 512
void belle_sip_multipart_body_handler_add_part(belle_sip_multipart_body_handler_t *obj, belle_sip_body_handler_t *part){
if (obj->parts != NULL) {
obj->base.expected_size += 2; /*delimiter := CRLF dash-boundary*/
//add initial CRLF*/
}
obj->base.expected_size+=part->expected_size+strlen(obj->boundary) + 4; /* add the separator length to the body length as each part start with a separator. 4 is for "--" and "\r\n" */
if (part->headers != NULL) { /* there is a declared header for this part, add its length to the expected total length */
size_t headerStringBufferSize = DEFAULT_HEADER_STRING_SIZE;
size_t offset = 0;
belle_sip_list_t *headerList = part->headers;
part->headerStringBuffer = (char *)belle_sip_malloc(DEFAULT_HEADER_STRING_SIZE);
while (headerList != NULL) {
size_t offsetBackup=offset; /* we must backup the offset as it will be messed up by the marshal function in case of failure */
belle_sip_error_code returnCode = belle_sip_object_marshal(headerList->data, part->headerStringBuffer, headerStringBufferSize-5, &offset); /* -5 to leave room for carriage returns */
if (returnCode == BELLE_SIP_BUFFER_OVERFLOW) { /* increase buffer size */
offset=offsetBackup; /* restore the offset, no data were written to the buffer */
headerStringBufferSize+=DEFAULT_HEADER_STRING_SIZE;
part->headerStringBuffer = (char *)belle_sip_realloc(part->headerStringBuffer, headerStringBufferSize);
} else if (returnCode == BELLE_SIP_OK) { /* add the carriage return chars */
part->headerStringBuffer[offset++]='\r';
part->headerStringBuffer[offset++]='\n';
headerList = belle_sip_list_next(headerList);
}
}
part->headerStringBuffer[offset++]='\r';
part->headerStringBuffer[offset++]='\n';
obj->base.expected_size += offset;
part->headerStringBuffer[offset++]='\0'; /* null terminate the buffer in order to be able to get it length later using strlen */
}
obj->parts=belle_sip_list_append(obj->parts,belle_sip_object_ref(part));
}
const belle_sip_list_t* belle_sip_multipart_body_handler_get_parts(const belle_sip_multipart_body_handler_t *obj) {
return obj->parts;
}
void belle_sip_multipart_body_handler_progress_cb(belle_sip_body_handler_t *obj, belle_sip_message_t *msg, void *user_data, size_t transfered, size_t expected_total) {
if (transfered == expected_total) {
/* The full multipart body has been received, we can now parse it and split the different parts,
* creating a belle_sip_memory_body_handler for each part and adding them to the belle_sip_multipart_body_handler
* parts list. */
belle_sip_multipart_body_handler_t *obj_multipart = (belle_sip_multipart_body_handler_t *)obj;
belle_sip_memory_body_handler_t *memorypart;
belle_sip_header_t *header;
uint8_t *end_part_cursor;
uint8_t *end_headers_cursor;
uint8_t *end_header_cursor;
uint8_t *cursor = obj_multipart->buffer;
char *dash_boundary = belle_sip_strdup_printf("--%s", obj_multipart->boundary);
if (strncmp((char *)cursor, dash_boundary, strlen(dash_boundary))) {
belle_sip_warning("belle_sip_multipart_body_handler [%p]: body not starting by specified boundary '%s'", obj_multipart, obj_multipart->boundary);
belle_sip_free(dash_boundary);
return;
}
cursor += strlen(dash_boundary);
do {
bool_t delimiter_contains_crlf = FALSE;
if (strncmp((char *)cursor, "\r\n", 2)) {
belle_sip_warning("belle_sip_multipart_body_handler [%p]: no new-line after boundary", obj_multipart);
belle_sip_free(dash_boundary);
return;
}
cursor += 2;
end_part_cursor = (uint8_t *)strstr((char *)cursor, dash_boundary);
if (end_part_cursor == NULL) {
belle_sip_warning("belle_sip_multipart_body_handler [%p]: cannot find next boundary", obj_multipart);
belle_sip_free(dash_boundary);
return;
} else {
if (*(end_part_cursor-1) == '\n' && *(end_part_cursor-2) == '\r') {
end_part_cursor-=2; /* delimiter is well formed: delimiter := CRLF dash-boundary */
delimiter_contains_crlf = TRUE;
}
*end_part_cursor = 0;
end_headers_cursor = (uint8_t *)strstr((char *)cursor, "\r\n\r\n");
if (end_headers_cursor == NULL) {
memorypart = belle_sip_memory_body_handler_new_copy_from_buffer(cursor, strlen((char *)cursor), NULL, NULL);
} else {
uint8_t *begin_body_cursor = end_headers_cursor + 4;
memorypart = belle_sip_memory_body_handler_new_copy_from_buffer(begin_body_cursor, strlen((char *)begin_body_cursor), NULL, NULL);
do {
end_header_cursor = (uint8_t *)strstr((char *)cursor, "\r\n");
*end_header_cursor = 0;
header = belle_sip_header_parse((char *)cursor);
if (header != NULL) {
belle_sip_body_handler_add_header(BELLE_SIP_BODY_HANDLER(memorypart), header);
}
cursor = end_header_cursor + 2;
} while (end_header_cursor != end_headers_cursor);
}
belle_sip_multipart_body_handler_add_part(obj_multipart, BELLE_SIP_BODY_HANDLER(memorypart));
cursor = end_part_cursor + strlen(dash_boundary);
if (delimiter_contains_crlf)
cursor += 2;
}
} while (strcmp((char *)cursor, "--\r\n"));
belle_sip_free(dash_boundary);
}
}