bodyhandler.c 30.4 KB
Newer Older
1 2 3 4 5 6
/*
	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
7
    the Free Software Foundation, either version 2 of the License, or
8 9 10 11 12 13 14 15 16 17 18 19
    (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 <http://www.gnu.org/licenses/>.
*/

#include "belle_sip_internal.h"
Ghislain MARY's avatar
Ghislain MARY committed
20 21 22
#ifdef HAVE_ZLIB
#include "zlib.h"
#endif
23 24 25 26 27 28 29 30 31 32

/*
 * 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;
33 34
	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 */
35 36 37 38 39 40 41 42
	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;
43 44 45 46
	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);
	}
47 48
}

49
static void belle_sip_body_handler_destroy(belle_sip_body_handler_t *obj){
50 51
	belle_sip_list_free_with_data(obj->headers,belle_sip_object_unref);
	belle_sip_free(obj->headerStringBuffer);
52 53
}

54 55 56 57 58 59 60 61 62 63 64 65 66 67
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_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) return BELLE_SIP_BUFFER_OVERFLOW;
	if (ret == BELLE_SIP_STOP) belle_sip_body_handler_end_transfer(obj);
	return BELLE_SIP_OK;
}

68 69 70 71 72
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),
73
		(belle_sip_object_destroy_t) belle_sip_body_handler_destroy,
74
		(belle_sip_object_clone_t) belle_sip_body_handler_clone,
75
		(belle_sip_object_marshal_t) belle_sip_body_handler_marshal,
76
	},
77 78
	NULL, /* begin_transfer */
	NULL, /* end_transfer */
79 80 81 82 83 84 85
	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;
86 87
	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 */
88 89
}

90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107
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;
}

108 109 110 111
size_t belle_sip_body_handler_get_size(const belle_sip_body_handler_t *obj){
	return obj->expected_size;
}

112 113 114 115
void belle_sip_body_handler_set_size(belle_sip_body_handler_t *obj, size_t size){
	obj->expected_size=size;
}

116 117 118 119 120 121 122 123 124 125
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){
	if (obj->progress_cb)
		obj->progress_cb(obj,msg,obj->user_data,obj->transfered_size,obj->expected_size);
}

void belle_sip_body_handler_begin_transfer(belle_sip_body_handler_t *obj){
126 127 128 129
	BELLE_SIP_OBJECT_VPTR_TYPE(belle_sip_body_handler_t) *vptr = BELLE_SIP_OBJECT_VPTR(obj, belle_sip_body_handler_t);
	if (vptr->begin_transfer != NULL) {
		vptr->begin_transfer(obj);
	}
130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158
	obj->transfered_size=0;
}

void belle_sip_body_handler_recv_chunk(belle_sip_body_handler_t *obj, belle_sip_message_t *msg, const uint8_t *buf, size_t size){
	BELLE_SIP_OBJECT_VPTR(obj,belle_sip_body_handler_t)->chunk_recv(obj,msg,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;
	if (obj->expected_size!=0){
		*size=MIN(*size,obj->expected_size-obj->transfered_size);
	}
	ret=BELLE_SIP_OBJECT_VPTR(obj,belle_sip_body_handler_t)->chunk_send(obj,msg,obj->transfered_size,buf,size);
	obj->transfered_size+=*size;
	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_size<obj->expected_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){
159 160 161 162
	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);
	}
163 164 165 166 167 168 169 170 171 172 173
	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;
Ghislain MARY's avatar
Ghislain MARY committed
174
	uint8_t encoding_applied;
175 176 177 178 179 180 181 182
};

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) {
183 184 185
		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';
186
	}
Ghislain MARY's avatar
Ghislain MARY committed
187
	obj->encoding_applied = orig->encoding_applied;
188 189 190 191 192 193 194 195 196 197 198
}

static void belle_sip_memory_body_handler_recv_chunk(belle_sip_body_handler_t *base, belle_sip_message_t *msg, size_t offset, const 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, size_t offset, uint8_t *buf, size_t *size){
	belle_sip_memory_body_handler_t *obj=(belle_sip_memory_body_handler_t*)base;
199
	size_t to_send=MIN(*size,obj->base.expected_size-offset);
200 201
	memcpy(buf,obj->buffer+offset,to_send);
	*size=to_send;
202
	return (obj->base.expected_size-offset==*size) ? BELLE_SIP_STOP : BELLE_SIP_CONTINUE;
203 204 205 206 207 208 209 210 211 212 213
}

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
		},
214 215
		NULL,
		NULL,
216 217 218 219 220
		belle_sip_memory_body_handler_recv_chunk,
		belle_sip_memory_body_handler_send_chunk
	}
BELLE_SIP_INSTANCIATE_CUSTOM_VPTR_END

221
void *belle_sip_memory_body_handler_get_buffer(const belle_sip_memory_body_handler_t *obj){
222 223 224
	return obj->buffer;
}

225
void belle_sip_memory_body_handler_set_buffer(belle_sip_memory_body_handler_t *obj, void *buffer) {
226
	if (obj->buffer != NULL) belle_sip_free(obj->buffer);
227 228 229
	obj->buffer = (uint8_t *)buffer;
}

230
#define BELLE_SIP_MEMORY_BODY_HANDLER_ZLIB_INITIAL_SIZE 2048
Ghislain MARY's avatar
Ghislain MARY committed
231 232 233 234 235 236 237 238 239

void belle_sip_memory_body_handler_apply_encoding(belle_sip_memory_body_handler_t *obj, const char *encoding) {
	if ((obj->buffer == NULL) || (obj->encoding_applied == TRUE)) return;

#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;
240
		unsigned int avail_out = BELLE_SIP_MEMORY_BODY_HANDLER_ZLIB_INITIAL_SIZE;
Ghislain MARY's avatar
Ghislain MARY committed
241 242 243 244 245 246 247 248 249 250 251 252 253
		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) return;
		strm.avail_in = initial_size;
		strm.next_in = obj->buffer;
		do {
254
			if (avail_out < BELLE_SIP_MEMORY_BODY_HANDLER_ZLIB_INITIAL_SIZE) {
Ghislain MARY's avatar
Ghislain MARY committed
255
				unsigned int cursize = outbuf_ptr - outbuf;
256
				outbuf_size *= 2;
Ghislain MARY's avatar
Ghislain MARY committed
257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279
				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 - (outbuf_ptr - outbuf);
		} while (strm.avail_out == 0);
		deflateEnd(&strm);
		final_size = outbuf_ptr - outbuf;
		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;
	} else
#endif
	{
		belle_sip_warning("%s: unknown encoding '%s'", __FUNCTION__, encoding);
	}
}

280 281 282 283 284 285 286 287
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;
288
		unsigned int avail_out = BELLE_SIP_MEMORY_BODY_HANDLER_ZLIB_INITIAL_SIZE;
289 290 291 292 293 294 295 296 297 298 299 300 301 302 303
		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;
		strm.avail_in = 0;
		strm.next_in = Z_NULL;
		ret = inflateInit(&strm);
		if (ret != Z_OK) return -1;
		strm.avail_in = initial_size;
		strm.next_in = obj->buffer;
		do {
304
			if (avail_out < BELLE_SIP_MEMORY_BODY_HANDLER_ZLIB_INITIAL_SIZE) {
305
				unsigned int cursize = outbuf_ptr - outbuf;
306
				outbuf_size *= 2;
307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339
				outbuf = belle_sip_realloc(outbuf, outbuf_size);
				outbuf_ptr = outbuf + cursize;
			}
			strm.avail_out = avail_out;
			strm.next_out = outbuf_ptr;
			ret = inflate(&strm, Z_NO_FLUSH);
			switch (ret) {
				case Z_NEED_DICT:
					ret = Z_DATA_ERROR;
				case Z_DATA_ERROR:
				case Z_MEM_ERROR:
					inflateEnd(&strm);
					belle_sip_free(outbuf);
					return -1;
			}
			outbuf_ptr += avail_out - strm.avail_out;
			avail_out = outbuf_size - (outbuf_ptr - outbuf);
		} while (ret != Z_STREAM_END);
		inflateEnd(&strm);
		final_size = outbuf_ptr - outbuf;
		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;
	}
}

340 341 342 343 344 345 346 347 348 349
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;
350
	obj->base.expected_size=bufsize;
351 352 353 354 355 356 357 358
	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';
359
	obj->base.expected_size=bufsize;
360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403
	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_recv_callback_t recv_cb;
	belle_sip_user_body_handler_send_callback_t send_cb;
};

static void belle_sip_user_body_handler_recv_chunk(belle_sip_body_handler_t *base, belle_sip_message_t *msg, size_t offset, const 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, size_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->recv_cb=orig->recv_cb;
	obj->send_cb=orig->send_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
		},
404 405
		NULL,
		NULL,
406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425
		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_recv_callback_t recv_cb,
	belle_sip_user_body_handler_send_callback_t send_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->recv_cb=recv_cb;
	obj->send_cb=send_cb;
	return obj;
}


Ghislain MARY's avatar
Ghislain MARY committed
426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444
/**
 * File body handler implementation
**/

struct belle_sip_file_body_handler{
	belle_sip_body_handler_t base;
	char *filepath;
};

static void belle_sip_file_body_handler_destroy(belle_sip_file_body_handler_t *obj) {
	if (obj->filepath) belle_sip_free(obj->filepath);
}

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);
}

static void belle_sip_file_body_handler_recv_chunk(belle_sip_body_handler_t *base, belle_sip_message_t *msg, size_t offset, const uint8_t *buf, size_t size) {
	FILE *f;
445
	int ret;
Ghislain MARY's avatar
Ghislain MARY committed
446 447 448 449
	belle_sip_file_body_handler_t *obj = (belle_sip_file_body_handler_t *)base;
	if (obj->filepath == NULL) return;
	f = fopen(obj->filepath, "ab");
	if (f == NULL) return;
450 451 452 453 454
	ret = fwrite(buf, 1, size, f);
	if (ret != size) {
		fclose(f);
		return;
	}
Ghislain MARY's avatar
Ghislain MARY committed
455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489
	fclose(f);
}

static int belle_sip_file_body_handler_send_chunk(belle_sip_body_handler_t *base, belle_sip_message_t *msg, size_t offset, uint8_t *buf, size_t *size) {
	FILE *f;
	int ret;
	belle_sip_file_body_handler_t *obj = (belle_sip_file_body_handler_t *)base;
	size_t to_send = MIN(*size, obj->base.expected_size - offset);
	if (obj->filepath == NULL) return BELLE_SIP_STOP;
	f = fopen(obj->filepath, "rb");
	if (f == NULL) return BELLE_SIP_STOP;
	ret = fseek(f, offset, SEEK_SET);
	if (ret < 0) {
		fclose(f);
		return BELLE_SIP_STOP;
	}
	ret = fread(buf, 1, to_send, f);
	if (ret < 0) {
		fclose(f);
		return BELLE_SIP_STOP;
	}
	*size = ret;
	fclose(f);
	return (((obj->base.expected_size - offset) == *size) || (*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
		},
490 491
		NULL,
		NULL,
Ghislain MARY's avatar
Ghislain MARY committed
492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508
		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);
	if (stat(obj->filepath, &statbuf) == 0) {
		obj->base.expected_size = statbuf.st_size;
	}
	return obj;
}


509 510 511 512 513 514 515 516
/*
 * Multipart body handler implementation
 * TODO
**/

struct belle_sip_multipart_body_handler{
	belle_sip_body_handler_t base;
	belle_sip_list_t *parts;
517
	belle_sip_list_t *transfer_current_part;
518 519
	char *boundary;
	uint8_t *buffer;
520
	unsigned int related;
521
};
522
GET_SET_BOOL(belle_sip_multipart_body_handler,related,is);
523 524 525

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);
526 527
	if (obj->buffer != NULL) belle_sip_free(obj->buffer);
	if (obj->boundary != NULL) belle_sip_free(obj->boundary);
528 529 530 531 532 533
}

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);
}

534
static void belle_sip_multipart_body_handler_begin_transfer(belle_sip_body_handler_t *obj) {
jehan's avatar
jehan committed
535
	const belle_sip_list_t *it;
536
	belle_sip_multipart_body_handler_t *obj_multipart = (belle_sip_multipart_body_handler_t *)obj;
jehan's avatar
jehan committed
537
	for (it = obj_multipart->parts; it != NULL; it = it->next) {
538 539 540 541 542 543 544
		belle_sip_body_handler_t *bh = BELLE_SIP_BODY_HANDLER(it->data);
		belle_sip_body_handler_begin_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) {
jehan's avatar
jehan committed
545
	const belle_sip_list_t *it;
546
	belle_sip_multipart_body_handler_t *obj_multipart = (belle_sip_multipart_body_handler_t *)obj;
jehan's avatar
jehan committed
547
	for (it = obj_multipart->parts; it != NULL; it = it->next) {
548 549 550 551 552 553
		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;
}

554 555
static void belle_sip_multipart_body_handler_recv_chunk(belle_sip_body_handler_t *obj, belle_sip_message_t *msg, size_t offset,
							const uint8_t *buffer, size_t size){
556 557 558 559 560
	/* 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';
561 562 563 564
}

static int belle_sip_multipart_body_handler_send_chunk(belle_sip_body_handler_t *obj, belle_sip_message_t *msg, size_t offset,
							uint8_t *buffer, size_t *size){
565 566 567

	belle_sip_multipart_body_handler_t *obj_multipart=(belle_sip_multipart_body_handler_t*)obj;

568
	if (obj_multipart->transfer_current_part->data) { /* we have a part, get its content from handler */
569
		int retval = BELLE_SIP_STOP;
570
		size_t offsetSize = 0; /* used to store size of data added by this function and not given by the body handler of current part */
571
		size_t boundary_len = strlen(obj_multipart->boundary);
572
		belle_sip_body_handler_t *current_part = (belle_sip_body_handler_t *)obj_multipart->transfer_current_part->data;
573
		*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" */
574

575
		if (current_part->transfered_size == 0) { /* Nothing transfered yet on this part, include a separator and the header if exists */
576
			size_t headersSize = 0;
577
			offsetSize = strlen(obj_multipart->boundary) + 4; /* 4 is for "--" and "\r\n" */
578 579 580 581 582 583 584 585

			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;
586
			}
587 588

			/* insert separator */
589 590 591 592
			memcpy(buffer, "--", 2);
			memcpy(buffer + 2, obj_multipart->boundary, boundary_len);
			memcpy(buffer + 2 + boundary_len, "\r\n", 2);
			offsetSize = boundary_len + 4;
593 594 595 596 597 598 599
			/* 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 */
600 601
		}

602
		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) */
603 604

		*size +=offsetSize; /* restore total of data given including potential separator and header */
605

606

607 608 609
		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 */
610 611
			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);
612 613
				return BELLE_SIP_CONTINUE;
			} else { /* there is nothing else, close the message and return STOP */
614 615 616 617 618
				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;
619 620 621 622
				return BELLE_SIP_STOP;
			}
		}
	}
623 624 625 626 627 628 629 630 631 632 633 634
	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
		},
635 636
		belle_sip_multipart_body_handler_begin_transfer,
		belle_sip_multipart_body_handler_end_transfer,
637 638 639 640 641
		belle_sip_multipart_body_handler_recv_chunk,
		belle_sip_multipart_body_handler_send_chunk
	}
BELLE_SIP_INSTANCIATE_CUSTOM_VPTR_END

642 643 644 645
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);
	}
646 647 648 649 650
	if (boundary != NULL) {
		obj->boundary = belle_sip_strdup(boundary);
	} else {
		obj->boundary = belle_sip_strdup(BELLESIP_MULTIPART_BOUNDARY);
	}
651 652 653 654 655 656 657
}

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);
658
	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" */
659 660 661 662
	if (first_part) belle_sip_multipart_body_handler_add_part(obj,first_part);
	return obj;
}

663 664 665 666 667 668 669 670 671 672 673 674
belle_sip_multipart_body_handler_t *belle_sip_multipart_body_handler_new_from_buffer(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_transfer(obj);
	belle_sip_body_handler_recv_chunk(obj, NULL, (uint8_t *)buffer, bufsize);
	belle_sip_body_handler_end_transfer(obj);
	return obj_multipart;
}

675
#define DEFAULT_HEADER_STRING_SIZE 512
676
void belle_sip_multipart_body_handler_add_part(belle_sip_multipart_body_handler_t *obj, belle_sip_body_handler_t *part){
677
	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" */
678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700
	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 */
701
	}
702 703
	obj->parts=belle_sip_list_append(obj->parts,belle_sip_object_ref(part));
}
704 705 706
const belle_sip_list_t* belle_sip_multipart_body_handler_get_parts(const belle_sip_multipart_body_handler_t *obj) {
	return obj->parts;
}
707

708 709 710 711 712 713 714 715 716 717 718 719
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;
720 721
		char *boundary = belle_sip_strdup_printf("--%s", obj_multipart->boundary);
		if (strncmp((char *)cursor, boundary, strlen(boundary))) {
722
			belle_sip_warning("belle_sip_multipart_body_handler [%p]: body not starting by specified boundary '%s'", obj_multipart, obj_multipart->boundary);
723
			belle_sip_free(boundary);
724 725
			return;
		}
726
		cursor += strlen(boundary);
727 728 729 730 731 732
		do {
			if (strncmp((char *)cursor, "\r\n", 2)) {
				belle_sip_warning("belle_sip_multipart_body_handler [%p]: no new-line after boundary", obj_multipart);
				return;
			}
			cursor += 2;
733
			end_part_cursor = (uint8_t *)strstr((char *)cursor, boundary);
734 735 736 737 738 739 740
			if (end_part_cursor == NULL) {
				belle_sip_warning("belle_sip_multipart_body_handler [%p]: cannot find next boundary", obj_multipart);
				return;
			} else {
				*end_part_cursor = 0;
				end_headers_cursor = (uint8_t *)strstr((char *)cursor, "\r\n\r\n");
				if (end_headers_cursor == NULL) {
741
					memorypart = belle_sip_memory_body_handler_new_copy_from_buffer(cursor, strlen((char *)cursor), NULL, NULL);
742 743
				} else {
					uint8_t *begin_body_cursor = end_headers_cursor + 4;
744
					memorypart = belle_sip_memory_body_handler_new_copy_from_buffer(begin_body_cursor, strlen((char *)begin_body_cursor), NULL, NULL);
745 746 747 748 749 750 751 752 753 754 755
					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));
756
				cursor = end_part_cursor + strlen(boundary);
757 758
			}
		} while (strcmp((char *)cursor, "--\r\n"));
759
		belle_sip_free(boundary);
760 761
	}
}