http.c 18.8 KB
Newer Older
1
/*
schu committed
2
 * Copyright (C) 2009-2012 the libgit2 contributors
3
 *
4 5
 * This file is part of libgit2, distributed under the GNU GPL v2 with
 * a Linking Exception. For full terms see the included COPYING file.
6
 */
7 8
#ifndef GIT_WINHTTP

9 10 11
#include "git2.h"
#include "http_parser.h"
#include "buffer.h"
12
#include "netops.h"
13
#include "smart.h"
14 15 16 17 18 19

static const char *prefix_http = "http://";
static const char *prefix_https = "https://";
static const char *upload_pack_service = "upload-pack";
static const char *upload_pack_ls_service_url = "/info/refs?service=git-upload-pack";
static const char *upload_pack_service_url = "/git-upload-pack";
20 21 22
static const char *receive_pack_service = "receive-pack";
static const char *receive_pack_ls_service_url = "/info/refs?service=git-receive-pack";
static const char *receive_pack_service_url = "/git-receive-pack";
23 24
static const char *get_verb = "GET";
static const char *post_verb = "POST";
25
static const char *basic_authtype = "Basic";
26 27

#define OWNING_SUBTRANSPORT(s) ((http_subtransport *)(s)->parent.subtransport)
28

29 30 31
#define PARSE_ERROR_GENERIC	-1
#define PARSE_ERROR_REPLAY	-2

32 33
#define CHUNK_SIZE	4096

34
enum last_cb {
35 36 37
	NONE,
	FIELD,
	VALUE
38
};
39

40 41 42 43
typedef enum {
	GIT_HTTP_AUTH_BASIC = 1,
} http_authmechanism_t;

44
typedef struct {
45 46 47 48
	git_smart_subtransport_stream parent;
	const char *service;
	const char *service_url;
	const char *verb;
49 50 51 52 53
	char *chunk_buffer;
	unsigned chunk_buffer_len;
	unsigned sent_request : 1,
		received_response : 1,
		chunked : 1;
54 55 56 57
} http_stream;

typedef struct {
	git_smart_subtransport parent;
58
	transport_smart *owner;
59 60 61
	gitno_socket socket;
	const char *path;
	char *host;
62 63 64
	char *port;
	git_cred *cred;
	http_authmechanism_t auth_mechanism;
65
	unsigned connected : 1,
66
		use_ssl : 1;
67 68

	/* Parser structures */
69
	http_parser parser;
70 71
	http_parser_settings settings;
	gitno_buffer parse_buffer;
72 73
	git_buf parse_header_name;
	git_buf parse_header_value;
74
	char parse_buffer_data[2048];
75
	char *content_type;
76
	git_vector www_authenticate;
77
	enum last_cb last_cb;
78 79
	int parse_error;
	unsigned parse_finished : 1;
80 81 82 83 84 85 86 87 88 89 90
} http_subtransport;

typedef struct {
	http_stream *s;
	http_subtransport *t;

	/* Target buffer details from read() */
	char *buffer;
	size_t buf_size;
	size_t *bytes_read;
} parser_context;
91

92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117
static int apply_basic_credential(git_buf *buf, git_cred *cred)
{
	git_cred_userpass_plaintext *c = (git_cred_userpass_plaintext *)cred;
	git_buf raw = GIT_BUF_INIT;
	int error = -1;

	git_buf_printf(&raw, "%s:%s", c->username, c->password);

	if (git_buf_oom(&raw) ||
		git_buf_puts(buf, "Authorization: Basic ") < 0 ||
		git_buf_put_base64(buf, git_buf_cstr(&raw), raw.size) < 0 ||
		git_buf_puts(buf, "\r\n") < 0)
		goto on_error;

	error = 0;

on_error:
	if (raw.size)
		memset(raw.ptr, 0x0, raw.size);

	git_buf_free(&raw);
	return error;
}

static int gen_request(
	git_buf *buf,
118 119
	http_stream *s,
	size_t content_length)
120
{
121 122 123 124
	http_subtransport *t = OWNING_SUBTRANSPORT(s);

	if (!t->path)
		t->path = "/";
125

126
	git_buf_printf(buf, "%s %s%s HTTP/1.1\r\n", s->verb, t->path, s->service_url);
127
	git_buf_puts(buf, "User-Agent: git/1.0 (libgit2 " LIBGIT2_VERSION ")\r\n");
128 129 130 131 132 133 134 135 136 137 138
	git_buf_printf(buf, "Host: %s\r\n", t->host);

	if (s->chunked || content_length > 0) {
		git_buf_printf(buf, "Accept: application/x-git-%s-result\r\n", s->service);
		git_buf_printf(buf, "Content-Type: application/x-git-%s-request\r\n", s->service);

		if (s->chunked)
			git_buf_puts(buf, "Transfer-Encoding: chunked\r\n");
		else
			git_buf_printf(buf, "Content-Length: %"PRIuZ "\r\n", content_length);
	} else
139
		git_buf_puts(buf, "Accept: */*\r\n");
140 141

	/* Apply credentials to the request */
142 143 144
	if (t->cred && t->cred->credtype == GIT_CREDTYPE_USERPASS_PLAINTEXT &&
		t->auth_mechanism == GIT_HTTP_AUTH_BASIC &&
		apply_basic_credential(buf, t->cred) < 0)
145 146
		return -1;

147
	git_buf_puts(buf, "\r\n");
148

149
	if (git_buf_oom(buf))
150
		return -1;
151 152

	return 0;
153 154
}

155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179
static int parse_unauthorized_response(
	git_vector *www_authenticate,
	int *allowed_types,
	http_authmechanism_t *auth_mechanism)
{
	unsigned i;
	char *entry;

	git_vector_foreach(www_authenticate, i, entry) {
		if (!strncmp(entry, basic_authtype, 5) &&
			(entry[5] == '\0' || entry[5] == ' ')) {
			*allowed_types |= GIT_CREDTYPE_USERPASS_PLAINTEXT;
			*auth_mechanism = GIT_HTTP_AUTH_BASIC;
		}
	}

	return 0;
}

static int on_header_ready(http_subtransport *t)
{
	git_buf *name = &t->parse_header_name;
	git_buf *value = &t->parse_header_value;
	char *dup;

180
	if (!t->content_type && !strcasecmp("Content-Type", git_buf_cstr(name))) {
181 182 183 184 185 186 187 188 189 190 191 192
		t->content_type = git__strdup(git_buf_cstr(value));
		GITERR_CHECK_ALLOC(t->content_type);
	}
	else if (!strcmp("WWW-Authenticate", git_buf_cstr(name))) {
		dup = git__strdup(git_buf_cstr(value));
		GITERR_CHECK_ALLOC(dup);
		git_vector_insert(&t->www_authenticate, dup);
	}

	return 0;
}

193 194
static int on_header_field(http_parser *parser, const char *str, size_t len)
{
195 196
	parser_context *ctx = (parser_context *) parser->data;
	http_subtransport *t = ctx->t;
197

198 199 200 201 202
	/* Both parse_header_name and parse_header_value are populated
	 * and ready for consumption */
	if (VALUE == t->last_cb)
		if (on_header_ready(t) < 0)
			return t->parse_error = PARSE_ERROR_GENERIC;
203

204 205
	if (NONE == t->last_cb || VALUE == t->last_cb)
		git_buf_clear(&t->parse_header_name);
206

207 208
	if (git_buf_put(&t->parse_header_name, str, len) < 0)
		return t->parse_error = PARSE_ERROR_GENERIC;
209

210
	t->last_cb = FIELD;
211
	return 0;
212 213 214 215
}

static int on_header_value(http_parser *parser, const char *str, size_t len)
{
216 217
	parser_context *ctx = (parser_context *) parser->data;
	http_subtransport *t = ctx->t;
218

219
	assert(NONE != t->last_cb);
220

221 222
	if (FIELD == t->last_cb)
		git_buf_clear(&t->parse_header_value);
223

224 225
	if (git_buf_put(&t->parse_header_value, str, len) < 0)
		return t->parse_error = PARSE_ERROR_GENERIC;
226

227
	t->last_cb = VALUE;
228
	return 0;
229 230 231 232
}

static int on_headers_complete(http_parser *parser)
{
233 234
	parser_context *ctx = (parser_context *) parser->data;
	http_subtransport *t = ctx->t;
235 236
	http_stream *s = ctx->s;
	git_buf buf = GIT_BUF_INIT;
237

238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258
	/* Both parse_header_name and parse_header_value are populated
	 * and ready for consumption. */
	if (VALUE == t->last_cb)
		if (on_header_ready(t) < 0)
			return t->parse_error = PARSE_ERROR_GENERIC;

	/* Check for an authentication failure. */
	if (parser->status_code == 401 &&
		get_verb == s->verb &&
		t->owner->cred_acquire_cb) {
		int allowed_types = 0;

		if (parse_unauthorized_response(&t->www_authenticate,
			&allowed_types, &t->auth_mechanism) < 0)
			return t->parse_error = PARSE_ERROR_GENERIC;

		if (allowed_types &&
			(!t->cred || 0 == (t->cred->credtype & allowed_types))) {

			if (t->owner->cred_acquire_cb(&t->cred,
					t->owner->url,
259 260
					allowed_types,
					t->owner->cred_acquire_payload) < 0)
261 262 263 264 265 266 267
				return PARSE_ERROR_GENERIC;

			assert(t->cred);

			/* Successfully acquired a credential. */
			return t->parse_error = PARSE_ERROR_REPLAY;
		}
268 269
	}

270 271 272 273 274 275
	/* Check for a 200 HTTP status code. */
	if (parser->status_code != 200) {
		giterr_set(GITERR_NET,
			"Unexpected HTTP status code: %d",
			parser->status_code);
		return t->parse_error = PARSE_ERROR_GENERIC;
276 277
	}

278 279 280 281 282
	/* The response must contain a Content-Type header. */
	if (!t->content_type) {
		giterr_set(GITERR_NET, "No Content-Type header in response");
		return t->parse_error = PARSE_ERROR_GENERIC;
	}
283

284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302
	/* The Content-Type header must match our expectation. */
	if (get_verb == s->verb)
		git_buf_printf(&buf,
			"application/x-git-%s-advertisement",
			ctx->s->service);
	else
		git_buf_printf(&buf,
			"application/x-git-%s-result",
			ctx->s->service);

	if (git_buf_oom(&buf))
		return t->parse_error = PARSE_ERROR_GENERIC;

	if (strcmp(t->content_type, git_buf_cstr(&buf))) {
		git_buf_free(&buf);
		giterr_set(GITERR_NET,
			"Invalid Content-Type: %s",
			t->content_type);
		return t->parse_error = PARSE_ERROR_GENERIC;
303
	}
304

305 306
	git_buf_free(&buf);

307 308 309 310 311
	return 0;
}

static int on_message_complete(http_parser *parser)
{
312 313
	parser_context *ctx = (parser_context *) parser->data;
	http_subtransport *t = ctx->t;
314

315
	t->parse_finished = 1;
316

317 318 319
	return 0;
}

320
static int on_body_fill_buffer(http_parser *parser, const char *str, size_t len)
321
{
322 323
	parser_context *ctx = (parser_context *) parser->data;
	http_subtransport *t = ctx->t;
324

325
	if (ctx->buf_size < len) {
326
		giterr_set(GITERR_NET, "Can't fit data in the buffer");
327
		return t->parse_error = PARSE_ERROR_GENERIC;
328
	}
329

330 331 332 333
	memcpy(ctx->buffer, str, len);
	*(ctx->bytes_read) += len;
	ctx->buffer += len;
	ctx->buf_size -= len;
334

335 336
	return 0;
}
337

338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367
static void clear_parser_state(http_subtransport *t)
{
	unsigned i;
	char *entry;

	http_parser_init(&t->parser, HTTP_RESPONSE);
	gitno_buffer_setup(&t->socket,
		&t->parse_buffer,
		t->parse_buffer_data,
		sizeof(t->parse_buffer_data));

	t->last_cb = NONE;
	t->parse_error = 0;
	t->parse_finished = 0;

	git_buf_free(&t->parse_header_name);
	git_buf_init(&t->parse_header_name, 0);

	git_buf_free(&t->parse_header_value);
	git_buf_init(&t->parse_header_value, 0);

	git__free(t->content_type);
	t->content_type = NULL;

	git_vector_foreach(&t->www_authenticate, i, entry)
		git__free(entry);

	git_vector_free(&t->www_authenticate);
}

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
static int write_chunk(gitno_socket *socket, const char *buffer, size_t len)
{
	git_buf buf = GIT_BUF_INIT;

	/* Chunk header */
	git_buf_printf(&buf, "%X\r\n", (unsigned)len);

	if (git_buf_oom(&buf))
		return -1;

	if (gitno_send(socket, buf.ptr, buf.size, 0) < 0) {
		git_buf_free(&buf);
		return -1;
	}

	git_buf_free(&buf);

	/* Chunk body */
	if (len > 0 && gitno_send(socket, buffer, len, 0) < 0)
		return -1;

	/* Chunk footer */
	if (gitno_send(socket, "\r\n", 2, 0) < 0)
		return -1;

	return 0;
}

396 397 398 399 400
static int http_stream_read(
	git_smart_subtransport_stream *stream,
	char *buffer,
	size_t buf_size,
	size_t *bytes_read)
401
{
402
	http_stream *s = (http_stream *)stream;
403
	http_subtransport *t = OWNING_SUBTRANSPORT(s);
404
	parser_context ctx;
405
	size_t bytes_parsed;
406

407
replay:
408
	*bytes_read = 0;
409

410
	assert(t->connected);
411

412
	if (!s->sent_request) {
413 414
		git_buf request = GIT_BUF_INIT;

415 416
		clear_parser_state(t);

417
		if (gen_request(&request, s, 0) < 0) {
418
			giterr_set(GITERR_NET, "Failed to generate request");
419 420
			return -1;
		}
421

422 423 424 425 426 427
		if (gitno_send(&t->socket, request.ptr, request.size, 0) < 0) {
			git_buf_free(&request);
			return -1;
		}

		git_buf_free(&request);
428

429
		s->sent_request = 1;
430 431
	}

432 433 434
	if (!s->received_response) {
		if (s->chunked) {
			assert(s->verb == post_verb);
435

436 437 438 439
			/* Flush, if necessary */
			if (s->chunk_buffer_len > 0 &&
				write_chunk(&t->socket, s->chunk_buffer, s->chunk_buffer_len) < 0)
				return -1;
440

441
			s->chunk_buffer_len = 0;
442

443 444 445 446 447 448
			/* Write the final chunk. */
			if (gitno_send(&t->socket, "0\r\n\r\n", 5, 0) < 0)
				return -1;
		}

		s->received_response = 1;
449 450
	}

451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494
	while (!*bytes_read && !t->parse_finished) {
		t->parse_buffer.offset = 0;

		if (gitno_recv(&t->parse_buffer) < 0)
			return -1;

		/* This call to http_parser_execute will result in invocations of the
		 * on_* family of callbacks. The most interesting of these is
		 * on_body_fill_buffer, which is called when data is ready to be copied
		 * into the target buffer. We need to marshal the buffer, buf_size, and
		 * bytes_read parameters to this callback. */
		ctx.t = t;
		ctx.s = s;
		ctx.buffer = buffer;
		ctx.buf_size = buf_size;
		ctx.bytes_read = bytes_read;

		/* Set the context, call the parser, then unset the context. */
		t->parser.data = &ctx;

		bytes_parsed = http_parser_execute(&t->parser,
			&t->settings,
			t->parse_buffer.data,
			t->parse_buffer.offset);

		t->parser.data = NULL;

		/* If there was a handled authentication failure, then parse_error
		 * will have signaled us that we should replay the request. */
		if (PARSE_ERROR_REPLAY == t->parse_error) {
			s->sent_request = 0;
			goto replay;
		}

		if (t->parse_error < 0)
			return -1;

		if (bytes_parsed != t->parse_buffer.offset) {
			giterr_set(GITERR_NET,
				"HTTP parser error: %s",
				http_errno_description((enum http_errno)t->parser.http_errno));
			return -1;
		}
	}
495

496
	return 0;
497 498
}

499
static int http_stream_write_chunked(
500 501 502
	git_smart_subtransport_stream *stream,
	const char *buffer,
	size_t len)
503
{
504
	http_stream *s = (http_stream *)stream;
505
	http_subtransport *t = OWNING_SUBTRANSPORT(s);
506

507
	assert(t->connected);
508

509
	/* Send the request, if necessary */
510
	if (!s->sent_request) {
511 512
		git_buf request = GIT_BUF_INIT;

513 514
		clear_parser_state(t);

515
		if (gen_request(&request, s, 0) < 0) {
516 517 518
			giterr_set(GITERR_NET, "Failed to generate request");
			return -1;
		}
519

520 521 522 523
		if (gitno_send(&t->socket, request.ptr, request.size, 0) < 0) {
			git_buf_free(&request);
			return -1;
		}
524

525
		git_buf_free(&request);
526

527 528
		s->sent_request = 1;
	}
529

530 531 532 533 534 535 536 537 538 539 540 541 542 543 544
	if (len > CHUNK_SIZE) {
		/* Flush, if necessary */
		if (s->chunk_buffer_len > 0) {
			if (write_chunk(&t->socket, s->chunk_buffer, s->chunk_buffer_len) < 0)
				return -1;

			s->chunk_buffer_len = 0;
		}

		/* Write chunk directly */
		if (write_chunk(&t->socket, buffer, len) < 0)
			return -1;
	}
	else {
		/* Append as much to the buffer as we can */
545
		int count = min(CHUNK_SIZE - s->chunk_buffer_len, len);
546 547

		if (!s->chunk_buffer)
548
			s->chunk_buffer = git__malloc(CHUNK_SIZE);
549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603

		memcpy(s->chunk_buffer + s->chunk_buffer_len, buffer, count);
		s->chunk_buffer_len += count;
		buffer += count;
		len -= count;

		/* Is the buffer full? If so, then flush */
		if (CHUNK_SIZE == s->chunk_buffer_len) {
			if (write_chunk(&t->socket, s->chunk_buffer, s->chunk_buffer_len) < 0)
				return -1;

			s->chunk_buffer_len = 0;

			if (len > 0) {
				memcpy(s->chunk_buffer, buffer, len);
				s->chunk_buffer_len = len;
			}
		}
	}

	return 0;
}

static int http_stream_write_single(
	git_smart_subtransport_stream *stream,
	const char *buffer,
	size_t len)
{
	http_stream *s = (http_stream *)stream;
	http_subtransport *t = OWNING_SUBTRANSPORT(s);
	git_buf request = GIT_BUF_INIT;

	assert(t->connected);

	if (s->sent_request) {
		giterr_set(GITERR_NET, "Subtransport configured for only one write");
		return -1;
	}

	clear_parser_state(t);

	if (gen_request(&request, s, len) < 0) {
		giterr_set(GITERR_NET, "Failed to generate request");
		return -1;
	}

	if (gitno_send(&t->socket, request.ptr, request.size, 0) < 0)
		goto on_error;

	if (len && gitno_send(&t->socket, buffer, len, 0) < 0)
		goto on_error;

	git_buf_free(&request);
	s->sent_request = 1;

604 605 606 607 608 609
	return 0;

on_error:
	git_buf_free(&request);
	return -1;
}
610

611 612 613
static void http_stream_free(git_smart_subtransport_stream *stream)
{
	http_stream *s = (http_stream *)stream;
614

615 616 617
	if (s->chunk_buffer)
		git__free(s->chunk_buffer);

618 619
	git__free(s);
}
620

621 622
static int http_stream_alloc(http_subtransport *t,
	git_smart_subtransport_stream **stream)
623
{
624
	http_stream *s;
625

626 627
	if (!stream)
		return -1;
628

629
	s = git__calloc(sizeof(http_stream), 1);
630
	GITERR_CHECK_ALLOC(s);
631

632 633
	s->parent.subtransport = &t->parent;
	s->parent.read = http_stream_read;
634
	s->parent.write = http_stream_write_single;
635
	s->parent.free = http_stream_free;
636

637 638
	*stream = (git_smart_subtransport_stream *)s;
	return 0;
639 640
}

641 642 643
static int http_uploadpack_ls(
	http_subtransport *t,
	git_smart_subtransport_stream **stream)
644
{
645
	http_stream *s;
646

647
	if (http_stream_alloc(t, stream) < 0)
648 649
		return -1;

650
	s = (http_stream *)*stream;
651

652 653 654
	s->service = upload_pack_service;
	s->service_url = upload_pack_ls_service_url;
	s->verb = get_verb;
655

656
	return 0;
657 658
}

659 660 661
static int http_uploadpack(
	http_subtransport *t,
	git_smart_subtransport_stream **stream)
662
{
663
	http_stream *s;
664

665
	if (http_stream_alloc(t, stream) < 0)
666
		return -1;
667

668
	s = (http_stream *)*stream;
669

670 671 672
	s->service = upload_pack_service;
	s->service_url = upload_pack_service_url;
	s->verb = post_verb;
673

674
	return 0;
675 676
}

677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716
static int http_receivepack_ls(
	http_subtransport *t,
	git_smart_subtransport_stream **stream)
{
	http_stream *s;

	if (http_stream_alloc(t, stream) < 0)
		return -1;

	s = (http_stream *)*stream;

	s->service = receive_pack_service;
	s->service_url = receive_pack_ls_service_url;
	s->verb = get_verb;

	return 0;
}

static int http_receivepack(
	http_subtransport *t,
	git_smart_subtransport_stream **stream)
{
	http_stream *s;

	if (http_stream_alloc(t, stream) < 0)
		return -1;

	s = (http_stream *)*stream;

	/* Use Transfer-Encoding: chunked for this request */
	s->chunked = 1;
	s->parent.write = http_stream_write_chunked;

	s->service = receive_pack_service;
	s->service_url = receive_pack_service_url;
	s->verb = post_verb;

	return 0;
}

717 718
static int http_action(
	git_smart_subtransport_stream **stream,
719
	git_smart_subtransport *subtransport,
720 721
	const char *url,
	git_smart_service_t action)
722
{
723 724
	http_subtransport *t = (http_subtransport *)subtransport;
	const char *default_port = NULL;
725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741
	int flags = 0, ret;

	if (!stream)
		return -1;

	if (!t->host || !t->port || !t->path) {
		if (!git__prefixcmp(url, prefix_http)) {
			url = url + strlen(prefix_http);
			default_port = "80";
		}

		if (!git__prefixcmp(url, prefix_https)) {
			url += strlen(prefix_https);
			default_port = "443";
			t->use_ssl = 1;
		}

742 743 744
		if (!default_port)
			return -1;

745 746
		if ((ret = gitno_extract_host_and_port(&t->host, &t->port,
				url, default_port)) < 0)
747 748 749
			return ret;

		t->path = strchr(url, '/');
750
	}
751

752 753 754 755 756 757 758
	if (!t->connected ||
		!http_should_keep_alive(&t->parser) ||
		!http_body_is_final(&t->parser)) {

		if (t->socket.socket)
			gitno_close(&t->socket);

759
		if (t->use_ssl) {
760 761 762 763 764
			int transport_flags;

			if (t->owner->parent.read_flags(&t->owner->parent, &transport_flags) < 0)
				return -1;

765 766
			flags |= GITNO_CONNECT_SSL;

767
			if (GIT_TRANSPORTFLAGS_NO_CHECK_CERT & transport_flags)
768 769 770 771 772 773 774
				flags |= GITNO_CONNECT_SSL_NO_CHECK_CERT;
		}

		if (gitno_connect(&t->socket, t->host, t->port, flags) < 0)
			return -1;

		t->connected = 1;
775
	}
776

777 778 779 780 781 782 783
	switch (action)
	{
		case GIT_SERVICE_UPLOADPACK_LS:
			return http_uploadpack_ls(t, stream);

		case GIT_SERVICE_UPLOADPACK:
			return http_uploadpack(t, stream);
784 785 786 787 788 789

		case GIT_SERVICE_RECEIVEPACK_LS:
			return http_receivepack_ls(t, stream);

		case GIT_SERVICE_RECEIVEPACK:
			return http_receivepack(t, stream);
790
	}
791

792 793 794 795
	*stream = NULL;
	return -1;
}

796
static int http_close(git_smart_subtransport *subtransport)
797
{
798
	http_subtransport *t = (http_subtransport *) subtransport;
799

800 801
	clear_parser_state(t);

802
	if (t->socket.socket) {
803
		gitno_close(&t->socket);
804 805
		memset(&t->socket, 0x0, sizeof(gitno_socket));
	}
806

807 808 809 810 811
	if (t->cred) {
		t->cred->free(t->cred);
		t->cred = NULL;
	}

812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830
	if (t->host) {
		git__free(t->host);
		t->host = NULL;
	}

	if (t->port) {
		git__free(t->port);
		t->port = NULL;
	}

	return 0;
}

static void http_free(git_smart_subtransport *subtransport)
{
	http_subtransport *t = (http_subtransport *) subtransport;

	http_close(subtransport);

831
	git__free(t);
832 833
}

Vicent Marti committed
834
int git_smart_subtransport_http(git_smart_subtransport **out, git_transport *owner)
835
{
836
	http_subtransport *t;
837

838 839
	if (!out)
		return -1;
840

841
	t = git__calloc(sizeof(http_subtransport), 1);
842
	GITERR_CHECK_ALLOC(t);
843

844
	t->owner = (transport_smart *)owner;
845
	t->parent.action = http_action;
846
	t->parent.close = http_close;
847
	t->parent.free = http_free;
848

849 850 851 852 853
	t->settings.on_header_field = on_header_field;
	t->settings.on_header_value = on_header_value;
	t->settings.on_headers_complete = on_headers_complete;
	t->settings.on_body = on_body_fill_buffer;
	t->settings.on_message_complete = on_message_complete;
854

855
	*out = (git_smart_subtransport *) t;
856 857
	return 0;
}
858 859

#endif /* !GIT_WINHTTP */