Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * 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 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | |
| 20 | #include <pjlib-util/http_client.h> |
| 21 | #include <pj/activesock.h> |
| 22 | #include <pj/assert.h> |
| 23 | #include <pj/ctype.h> |
| 24 | #include <pj/errno.h> |
| 25 | #include <pj/except.h> |
| 26 | #include <pj/pool.h> |
| 27 | #include <pj/string.h> |
| 28 | #include <pj/timer.h> |
| 29 | #include <pj/rand.h> |
| 30 | #include <pjlib-util/base64.h> |
| 31 | #include <pjlib-util/errno.h> |
| 32 | #include <pjlib-util/md5.h> |
| 33 | #include <pjlib-util/scanner.h> |
| 34 | #include <pjlib-util/string.h> |
| 35 | |
| 36 | #define THIS_FILE "http_client.c" |
| 37 | |
| 38 | #if 0 |
| 39 | /* Enable some tracing */ |
| 40 | #define TRACE_(arg) PJ_LOG(3,arg) |
| 41 | #else |
| 42 | #define TRACE_(arg) |
| 43 | #endif |
| 44 | |
| 45 | #define NUM_PROTOCOL 2 |
| 46 | #define HTTP_1_0 "1.0" |
| 47 | #define HTTP_1_1 "1.1" |
| 48 | #define CONTENT_LENGTH "Content-Length" |
| 49 | /* Buffer size for sending/receiving messages. */ |
| 50 | #define BUF_SIZE 2048 |
| 51 | /* Initial data buffer size to store the data in case content- |
| 52 | * length is not specified in the server's response. |
| 53 | */ |
| 54 | #define INITIAL_DATA_BUF_SIZE 2048 |
| 55 | #define INITIAL_POOL_SIZE 1024 |
| 56 | #define POOL_INCREMENT_SIZE 512 |
| 57 | |
| 58 | enum http_protocol |
| 59 | { |
| 60 | PROTOCOL_HTTP, |
| 61 | PROTOCOL_HTTPS |
| 62 | }; |
| 63 | |
| 64 | static const char *http_protocol_names[NUM_PROTOCOL] = |
| 65 | { |
| 66 | "HTTP", |
| 67 | "HTTPS" |
| 68 | }; |
| 69 | |
| 70 | static const unsigned int http_default_port[NUM_PROTOCOL] = |
| 71 | { |
| 72 | 80, |
| 73 | 443 |
| 74 | }; |
| 75 | |
| 76 | enum http_method |
| 77 | { |
| 78 | HTTP_GET, |
| 79 | HTTP_PUT, |
| 80 | HTTP_DELETE |
| 81 | }; |
| 82 | |
| 83 | static const char *http_method_names[3] = |
| 84 | { |
| 85 | "GET", |
| 86 | "PUT", |
| 87 | "DELETE" |
| 88 | }; |
| 89 | |
| 90 | enum http_state |
| 91 | { |
| 92 | IDLE, |
| 93 | CONNECTING, |
| 94 | SENDING_REQUEST, |
| 95 | SENDING_REQUEST_BODY, |
| 96 | REQUEST_SENT, |
| 97 | READING_RESPONSE, |
| 98 | READING_DATA, |
| 99 | READING_COMPLETE, |
| 100 | ABORTING, |
| 101 | }; |
| 102 | |
| 103 | enum auth_state |
| 104 | { |
| 105 | AUTH_NONE, /* Not authenticating */ |
| 106 | AUTH_RETRYING, /* New request with auth has been submitted */ |
| 107 | AUTH_DONE /* Done retrying the request with auth. */ |
| 108 | }; |
| 109 | |
| 110 | struct pj_http_req |
| 111 | { |
| 112 | pj_str_t url; /* Request URL */ |
| 113 | pj_http_url hurl; /* Parsed request URL */ |
| 114 | pj_sockaddr addr; /* The host's socket address */ |
| 115 | pj_http_req_param param; /* HTTP request parameters */ |
| 116 | pj_pool_t *pool; /* Pool to allocate memory from */ |
| 117 | pj_timer_heap_t *timer; /* Timer for timeout management */ |
| 118 | pj_ioqueue_t *ioqueue; /* Ioqueue to use */ |
| 119 | pj_http_req_callback cb; /* Callbacks */ |
| 120 | pj_activesock_t *asock; /* Active socket */ |
| 121 | pj_status_t error; /* Error status */ |
| 122 | pj_str_t buffer; /* Buffer to send/receive msgs */ |
| 123 | enum http_state state; /* State of the HTTP request */ |
| 124 | enum auth_state auth_state; /* Authentication state */ |
| 125 | pj_timer_entry timer_entry;/* Timer entry */ |
| 126 | pj_bool_t resolved; /* Whether URL's host is resolved */ |
| 127 | pj_http_resp response; /* HTTP response */ |
| 128 | pj_ioqueue_op_key_t op_key; |
| 129 | struct tcp_state |
| 130 | { |
| 131 | /* Total data sent so far if the data is sent in segments (i.e. |
| 132 | * if on_send_data() is not NULL and if param.reqdata.total_size > 0) |
| 133 | */ |
| 134 | pj_size_t tot_chunk_size; |
| 135 | /* Size of data to be sent (in a single activesock operation).*/ |
| 136 | pj_size_t send_size; |
| 137 | /* Data size sent so far. */ |
| 138 | pj_size_t current_send_size; |
| 139 | /* Total data received so far. */ |
| 140 | pj_size_t current_read_size; |
| 141 | } tcp_state; |
| 142 | }; |
| 143 | |
| 144 | /* Start sending the request */ |
| 145 | static pj_status_t http_req_start_sending(pj_http_req *hreq); |
| 146 | /* Start reading the response */ |
| 147 | static pj_status_t http_req_start_reading(pj_http_req *hreq); |
| 148 | /* End the request */ |
| 149 | static pj_status_t http_req_end_request(pj_http_req *hreq); |
| 150 | /* Parse the header data and populate the header fields with the result. */ |
| 151 | static pj_status_t http_headers_parse(char *hdata, pj_size_t size, |
| 152 | pj_http_headers *headers); |
| 153 | /* Parse the response */ |
| 154 | static pj_status_t http_response_parse(pj_pool_t *pool, |
| 155 | pj_http_resp *response, |
| 156 | void *data, pj_size_t size, |
| 157 | pj_size_t *remainder); |
| 158 | /* Restart the request with authentication */ |
| 159 | static void restart_req_with_auth(pj_http_req *hreq); |
| 160 | /* Parse authentication challenge */ |
| 161 | static pj_status_t parse_auth_chal(pj_pool_t *pool, pj_str_t *input, |
| 162 | pj_http_auth_chal *chal); |
| 163 | |
| 164 | static pj_uint16_t get_http_default_port(const pj_str_t *protocol) |
| 165 | { |
| 166 | int i; |
| 167 | |
| 168 | for (i = 0; i < NUM_PROTOCOL; i++) { |
| 169 | if (!pj_stricmp2(protocol, http_protocol_names[i])) { |
| 170 | return (pj_uint16_t)http_default_port[i]; |
| 171 | } |
| 172 | } |
| 173 | return 0; |
| 174 | } |
| 175 | |
| 176 | static const char * get_protocol(const pj_str_t *protocol) |
| 177 | { |
| 178 | int i; |
| 179 | |
| 180 | for (i = 0; i < NUM_PROTOCOL; i++) { |
| 181 | if (!pj_stricmp2(protocol, http_protocol_names[i])) { |
| 182 | return http_protocol_names[i]; |
| 183 | } |
| 184 | } |
| 185 | |
| 186 | /* Should not happen */ |
| 187 | pj_assert(0); |
| 188 | return NULL; |
| 189 | } |
| 190 | |
| 191 | |
| 192 | /* Syntax error handler for parser. */ |
| 193 | static void on_syntax_error(pj_scanner *scanner) |
| 194 | { |
| 195 | PJ_UNUSED_ARG(scanner); |
| 196 | PJ_THROW(PJ_EINVAL); // syntax error |
| 197 | } |
| 198 | |
| 199 | /* Callback when connection is established to the server */ |
| 200 | static pj_bool_t http_on_connect(pj_activesock_t *asock, |
| 201 | pj_status_t status) |
| 202 | { |
| 203 | pj_http_req *hreq = (pj_http_req*) pj_activesock_get_user_data(asock); |
| 204 | |
| 205 | if (hreq->state == ABORTING || hreq->state == IDLE) |
| 206 | return PJ_FALSE; |
| 207 | |
| 208 | if (status != PJ_SUCCESS) { |
| 209 | hreq->error = status; |
| 210 | pj_http_req_cancel(hreq, PJ_TRUE); |
| 211 | return PJ_FALSE; |
| 212 | } |
| 213 | |
| 214 | /* OK, we are connected. Start sending the request */ |
| 215 | hreq->state = SENDING_REQUEST; |
| 216 | http_req_start_sending(hreq); |
| 217 | return PJ_TRUE; |
| 218 | } |
| 219 | |
| 220 | static pj_bool_t http_on_data_sent(pj_activesock_t *asock, |
| 221 | pj_ioqueue_op_key_t *op_key, |
| 222 | pj_ssize_t sent) |
| 223 | { |
| 224 | pj_http_req *hreq = (pj_http_req*) pj_activesock_get_user_data(asock); |
| 225 | |
| 226 | PJ_UNUSED_ARG(op_key); |
| 227 | |
| 228 | if (hreq->state == ABORTING || hreq->state == IDLE) |
| 229 | return PJ_FALSE; |
| 230 | |
| 231 | if (sent <= 0) { |
| 232 | hreq->error = (sent < 0 ? (pj_status_t)-sent : PJLIB_UTIL_EHTTPLOST); |
| 233 | pj_http_req_cancel(hreq, PJ_TRUE); |
| 234 | return PJ_FALSE; |
| 235 | } |
| 236 | |
| 237 | hreq->tcp_state.current_send_size += sent; |
| 238 | TRACE_((THIS_FILE, "\nData sent: %d out of %d bytes", |
| 239 | hreq->tcp_state.current_send_size, hreq->tcp_state.send_size)); |
| 240 | if (hreq->tcp_state.current_send_size == hreq->tcp_state.send_size) { |
| 241 | /* Find out whether there is a request body to send. */ |
| 242 | if (hreq->param.reqdata.total_size > 0 || |
| 243 | hreq->param.reqdata.size > 0) |
| 244 | { |
| 245 | if (hreq->state == SENDING_REQUEST) { |
| 246 | /* Start sending the request body */ |
| 247 | hreq->state = SENDING_REQUEST_BODY; |
| 248 | hreq->tcp_state.tot_chunk_size = 0; |
| 249 | pj_assert(hreq->param.reqdata.total_size == 0 || |
| 250 | (hreq->param.reqdata.total_size > 0 && |
| 251 | hreq->param.reqdata.size == 0)); |
| 252 | } else { |
| 253 | /* Continue sending the next chunk of the request body */ |
| 254 | hreq->tcp_state.tot_chunk_size += hreq->tcp_state.send_size; |
| 255 | if (hreq->tcp_state.tot_chunk_size == |
| 256 | hreq->param.reqdata.total_size || |
| 257 | hreq->param.reqdata.total_size == 0) |
| 258 | { |
| 259 | /* Finish sending all the chunks, start reading |
| 260 | * the response. |
| 261 | */ |
| 262 | hreq->state = REQUEST_SENT; |
| 263 | http_req_start_reading(hreq); |
| 264 | return PJ_TRUE; |
| 265 | } |
| 266 | } |
| 267 | if (hreq->param.reqdata.total_size > 0 && |
| 268 | hreq->cb.on_send_data) |
| 269 | { |
| 270 | /* Call the callback for the application to provide |
| 271 | * the next chunk of data to be sent. |
| 272 | */ |
| 273 | (*hreq->cb.on_send_data)(hreq, &hreq->param.reqdata.data, |
| 274 | &hreq->param.reqdata.size); |
| 275 | /* Make sure the total data size given by the user does not |
| 276 | * exceed what the user originally said. |
| 277 | */ |
| 278 | pj_assert(hreq->tcp_state.tot_chunk_size + |
| 279 | hreq->param.reqdata.size <= |
| 280 | hreq->param.reqdata.total_size); |
| 281 | } |
| 282 | http_req_start_sending(hreq); |
| 283 | } else { |
| 284 | /* No request body, proceed to reading the server's response. */ |
| 285 | hreq->state = REQUEST_SENT; |
| 286 | http_req_start_reading(hreq); |
| 287 | } |
| 288 | } |
| 289 | return PJ_TRUE; |
| 290 | } |
| 291 | |
| 292 | static pj_bool_t http_on_data_read(pj_activesock_t *asock, |
| 293 | void *data, |
| 294 | pj_size_t size, |
| 295 | pj_status_t status, |
| 296 | pj_size_t *remainder) |
| 297 | { |
| 298 | pj_http_req *hreq = (pj_http_req*) pj_activesock_get_user_data(asock); |
| 299 | |
| 300 | TRACE_((THIS_FILE, "\nData received: %d bytes", size)); |
| 301 | |
| 302 | if (hreq->state == ABORTING || hreq->state == IDLE) |
| 303 | return PJ_FALSE; |
| 304 | |
| 305 | if (hreq->state == READING_RESPONSE) { |
| 306 | pj_status_t st; |
| 307 | pj_size_t rem; |
| 308 | |
| 309 | if (status != PJ_SUCCESS && status != PJ_EPENDING) { |
| 310 | hreq->error = status; |
| 311 | pj_http_req_cancel(hreq, PJ_TRUE); |
| 312 | return PJ_FALSE; |
| 313 | } |
| 314 | |
| 315 | /* Parse the response. */ |
| 316 | st = http_response_parse(hreq->pool, &hreq->response, |
| 317 | data, size, &rem); |
| 318 | if (st == PJLIB_UTIL_EHTTPINCHDR) { |
| 319 | /* If we already use up all our buffer and still |
| 320 | * hasn't received the whole header, return error |
| 321 | */ |
| 322 | if (size == BUF_SIZE) { |
| 323 | hreq->error = PJ_ETOOBIG; // response header size is too big |
| 324 | pj_http_req_cancel(hreq, PJ_TRUE); |
| 325 | return PJ_FALSE; |
| 326 | } |
| 327 | /* Keep the data if we do not get the whole response header */ |
| 328 | *remainder = size; |
| 329 | } else { |
| 330 | hreq->state = READING_DATA; |
| 331 | if (st != PJ_SUCCESS) { |
| 332 | /* Server replied with an invalid (or unknown) response |
| 333 | * format. We'll just pass the whole (unparsed) response |
| 334 | * to the user. |
| 335 | */ |
| 336 | hreq->response.data = data; |
| 337 | hreq->response.size = size - rem; |
| 338 | } |
| 339 | |
| 340 | /* If code is 401 or 407, find and parse WWW-Authenticate or |
| 341 | * Proxy-Authenticate header |
| 342 | */ |
| 343 | if (hreq->response.status_code == 401 || |
| 344 | hreq->response.status_code == 407) |
| 345 | { |
| 346 | const pj_str_t STR_WWW_AUTH = { "WWW-Authenticate", 16 }; |
| 347 | const pj_str_t STR_PROXY_AUTH = { "Proxy-Authenticate", 18 }; |
| 348 | pj_http_resp *response = &hreq->response; |
| 349 | pj_http_headers *hdrs = &response->headers; |
| 350 | unsigned i; |
| 351 | |
| 352 | status = PJ_ENOTFOUND; |
| 353 | for (i = 0; i < hdrs->count; i++) { |
| 354 | if (!pj_stricmp(&hdrs->header[i].name, &STR_WWW_AUTH) || |
| 355 | !pj_stricmp(&hdrs->header[i].name, &STR_PROXY_AUTH)) |
| 356 | { |
| 357 | status = parse_auth_chal(hreq->pool, |
| 358 | &hdrs->header[i].value, |
| 359 | &response->auth_chal); |
| 360 | break; |
| 361 | } |
| 362 | } |
| 363 | |
| 364 | /* Check if we should perform authentication */ |
| 365 | if (status == PJ_SUCCESS && |
| 366 | hreq->auth_state == AUTH_NONE && |
| 367 | hreq->response.auth_chal.scheme.slen && |
| 368 | hreq->param.auth_cred.username.slen && |
| 369 | (hreq->param.auth_cred.scheme.slen == 0 || |
| 370 | !pj_stricmp(&hreq->response.auth_chal.scheme, |
| 371 | &hreq->param.auth_cred.scheme)) && |
| 372 | (hreq->param.auth_cred.realm.slen == 0 || |
| 373 | !pj_stricmp(&hreq->response.auth_chal.realm, |
| 374 | &hreq->param.auth_cred.realm)) |
| 375 | ) |
| 376 | { |
| 377 | /* Yes, authentication is required and we have been |
| 378 | * configured with credential. |
| 379 | */ |
| 380 | restart_req_with_auth(hreq); |
| 381 | if (hreq->auth_state == AUTH_RETRYING) { |
| 382 | /* We'll be resending the request with auth. This |
| 383 | * connection has been closed. |
| 384 | */ |
| 385 | return PJ_FALSE; |
| 386 | } |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | /* We already received the response header, call the |
| 391 | * appropriate callback. |
| 392 | */ |
| 393 | if (hreq->cb.on_response) |
| 394 | (*hreq->cb.on_response)(hreq, &hreq->response); |
| 395 | hreq->response.data = NULL; |
| 396 | hreq->response.size = 0; |
| 397 | |
| 398 | if (rem > 0 || hreq->response.content_length == 0) |
| 399 | return http_on_data_read(asock, (rem == 0 ? NULL: |
| 400 | (char *)data + size - rem), |
| 401 | rem, PJ_SUCCESS, NULL); |
| 402 | } |
| 403 | |
| 404 | return PJ_TRUE; |
| 405 | } |
| 406 | |
| 407 | if (hreq->state != READING_DATA) |
| 408 | return PJ_FALSE; |
| 409 | if (hreq->cb.on_data_read) { |
| 410 | /* If application wishes to receive the data once available, call |
| 411 | * its callback. |
| 412 | */ |
| 413 | if (size > 0) |
| 414 | (*hreq->cb.on_data_read)(hreq, data, size); |
| 415 | } else { |
| 416 | if (hreq->response.size == 0) { |
| 417 | /* If we know the content length, allocate the data based |
| 418 | * on that, otherwise we'll use initial buffer size and grow |
| 419 | * it later if necessary. |
| 420 | */ |
| 421 | hreq->response.size = (hreq->response.content_length == -1 ? |
| 422 | INITIAL_DATA_BUF_SIZE : |
| 423 | hreq->response.content_length); |
| 424 | hreq->response.data = pj_pool_alloc(hreq->pool, |
| 425 | hreq->response.size); |
| 426 | } |
| 427 | |
| 428 | /* If the size of data received exceeds its current size, |
| 429 | * grow the buffer by a factor of 2. |
| 430 | */ |
| 431 | if (hreq->tcp_state.current_read_size + size > |
| 432 | hreq->response.size) |
| 433 | { |
| 434 | void *olddata = hreq->response.data; |
| 435 | |
| 436 | hreq->response.data = pj_pool_alloc(hreq->pool, |
| 437 | hreq->response.size << 1); |
| 438 | pj_memcpy(hreq->response.data, olddata, hreq->response.size); |
| 439 | hreq->response.size <<= 1; |
| 440 | } |
| 441 | |
| 442 | /* Append the response data. */ |
| 443 | pj_memcpy((char *)hreq->response.data + |
| 444 | hreq->tcp_state.current_read_size, data, size); |
| 445 | } |
| 446 | hreq->tcp_state.current_read_size += size; |
| 447 | |
| 448 | /* If the total data received so far is equal to the content length |
| 449 | * or if it's already EOF. |
| 450 | */ |
| 451 | if ((hreq->response.content_length >=0 && |
| 452 | (pj_ssize_t)hreq->tcp_state.current_read_size >= |
| 453 | hreq->response.content_length) || |
| 454 | (status == PJ_EEOF && hreq->response.content_length == -1)) |
| 455 | { |
| 456 | /* Finish reading */ |
| 457 | http_req_end_request(hreq); |
| 458 | hreq->response.size = hreq->tcp_state.current_read_size; |
| 459 | |
| 460 | /* HTTP request is completed, call the callback. */ |
| 461 | if (hreq->cb.on_complete) { |
| 462 | (*hreq->cb.on_complete)(hreq, PJ_SUCCESS, &hreq->response); |
| 463 | } |
| 464 | |
| 465 | return PJ_FALSE; |
| 466 | } |
| 467 | |
| 468 | /* Error status or premature EOF. */ |
| 469 | if ((status != PJ_SUCCESS && status != PJ_EPENDING && status != PJ_EEOF) |
| 470 | || (status == PJ_EEOF && hreq->response.content_length > -1)) |
| 471 | { |
| 472 | hreq->error = status; |
| 473 | pj_http_req_cancel(hreq, PJ_TRUE); |
| 474 | return PJ_FALSE; |
| 475 | } |
| 476 | |
| 477 | return PJ_TRUE; |
| 478 | } |
| 479 | |
| 480 | /* Callback to be called when query has timed out */ |
| 481 | static void on_timeout( pj_timer_heap_t *timer_heap, |
| 482 | struct pj_timer_entry *entry) |
| 483 | { |
| 484 | pj_http_req *hreq = (pj_http_req *) entry->user_data; |
| 485 | |
| 486 | PJ_UNUSED_ARG(timer_heap); |
| 487 | |
| 488 | /* Recheck that the request is still not completed, since there is a |
| 489 | * slight possibility of race condition (timer elapsed while at the |
| 490 | * same time response arrives). |
| 491 | */ |
| 492 | if (hreq->state == READING_COMPLETE) { |
| 493 | /* Yeah, we finish on time */ |
| 494 | return; |
| 495 | } |
| 496 | |
| 497 | /* Invalidate id. */ |
| 498 | hreq->timer_entry.id = 0; |
| 499 | |
| 500 | /* Request timed out. */ |
| 501 | hreq->error = PJ_ETIMEDOUT; |
| 502 | pj_http_req_cancel(hreq, PJ_TRUE); |
| 503 | } |
| 504 | |
| 505 | /* Parse authentication challenge */ |
| 506 | static pj_status_t parse_auth_chal(pj_pool_t *pool, pj_str_t *input, |
| 507 | pj_http_auth_chal *chal) |
| 508 | { |
| 509 | pj_scanner scanner; |
| 510 | const pj_str_t REALM_STR = { "realm", 5}, |
| 511 | NONCE_STR = { "nonce", 5}, |
| 512 | ALGORITHM_STR = { "algorithm", 9 }, |
| 513 | STALE_STR = { "stale", 5}, |
| 514 | QOP_STR = { "qop", 3}, |
| 515 | OPAQUE_STR = { "opaque", 6}; |
| 516 | pj_status_t status = PJ_SUCCESS; |
| 517 | PJ_USE_EXCEPTION ; |
| 518 | |
| 519 | pj_scan_init(&scanner, input->ptr, input->slen, PJ_SCAN_AUTOSKIP_WS, |
| 520 | &on_syntax_error); |
| 521 | PJ_TRY { |
| 522 | /* Get auth scheme */ |
| 523 | if (*scanner.curptr == '"') { |
| 524 | pj_scan_get_quote(&scanner, '"', '"', &chal->scheme); |
| 525 | chal->scheme.ptr++; |
| 526 | chal->scheme.slen -= 2; |
| 527 | } else { |
| 528 | pj_scan_get_until_chr(&scanner, " \t\r\n", &chal->scheme); |
| 529 | } |
| 530 | |
| 531 | /* Loop parsing all parameters */ |
| 532 | for (;;) { |
| 533 | const char *end_param = ", \t\r\n;"; |
| 534 | pj_str_t name, value; |
| 535 | |
| 536 | /* Get pair of parameter name and value */ |
| 537 | value.ptr = NULL; |
| 538 | value.slen = 0; |
| 539 | pj_scan_get_until_chr(&scanner, "=, \t\r\n", &name); |
| 540 | if (*scanner.curptr == '=') { |
| 541 | pj_scan_get_char(&scanner); |
| 542 | if (!pj_scan_is_eof(&scanner)) { |
| 543 | if (*scanner.curptr == '"' || *scanner.curptr == '\'') { |
| 544 | int quote_char = *scanner.curptr; |
| 545 | pj_scan_get_quote(&scanner, quote_char, quote_char, |
| 546 | &value); |
| 547 | value.ptr++; |
| 548 | value.slen -= 2; |
| 549 | } else if (!strchr(end_param, *scanner.curptr)) { |
| 550 | pj_scan_get_until_chr(&scanner, end_param, &value); |
| 551 | } |
| 552 | } |
| 553 | value = pj_str_unescape(pool, &value); |
| 554 | } |
| 555 | |
| 556 | if (!pj_stricmp(&name, &REALM_STR)) { |
| 557 | chal->realm = value; |
| 558 | |
| 559 | } else if (!pj_stricmp(&name, &NONCE_STR)) { |
| 560 | chal->nonce = value; |
| 561 | |
| 562 | } else if (!pj_stricmp(&name, &ALGORITHM_STR)) { |
| 563 | chal->algorithm = value; |
| 564 | |
| 565 | } else if (!pj_stricmp(&name, &OPAQUE_STR)) { |
| 566 | chal->opaque = value; |
| 567 | |
| 568 | } else if (!pj_stricmp(&name, &QOP_STR)) { |
| 569 | chal->qop = value; |
| 570 | |
| 571 | } else if (!pj_stricmp(&name, &STALE_STR)) { |
| 572 | chal->stale = value.slen && |
| 573 | (*value.ptr != '0') && |
| 574 | (*value.ptr != 'f') && |
| 575 | (*value.ptr != 'F'); |
| 576 | |
| 577 | } |
| 578 | |
| 579 | /* Eat comma */ |
| 580 | if (!pj_scan_is_eof(&scanner) && *scanner.curptr == ',') |
| 581 | pj_scan_get_char(&scanner); |
| 582 | else |
| 583 | break; |
| 584 | } |
| 585 | |
| 586 | } |
| 587 | PJ_CATCH_ANY { |
| 588 | status = PJ_GET_EXCEPTION(); |
| 589 | pj_bzero(chal, sizeof(*chal)); |
| 590 | TRACE_((THIS_FILE, "Error: parsing of auth header failed")); |
| 591 | } |
| 592 | PJ_END; |
| 593 | pj_scan_fini(&scanner); |
| 594 | return status; |
| 595 | } |
| 596 | |
| 597 | /* The same as #pj_http_headers_add_elmt() with char * as |
| 598 | * its parameters. |
| 599 | */ |
| 600 | PJ_DEF(pj_status_t) pj_http_headers_add_elmt2(pj_http_headers *headers, |
| 601 | char *name, char *val) |
| 602 | { |
| 603 | pj_str_t f, v; |
| 604 | pj_cstr(&f, name); |
| 605 | pj_cstr(&v, val); |
| 606 | return pj_http_headers_add_elmt(headers, &f, &v); |
| 607 | } |
| 608 | |
| 609 | PJ_DEF(pj_status_t) pj_http_headers_add_elmt(pj_http_headers *headers, |
| 610 | pj_str_t *name, |
| 611 | pj_str_t *val) |
| 612 | { |
| 613 | PJ_ASSERT_RETURN(headers && name && val, PJ_FALSE); |
| 614 | if (headers->count >= PJ_HTTP_HEADER_SIZE) |
| 615 | return PJ_ETOOMANY; |
| 616 | pj_strassign(&headers->header[headers->count].name, name); |
| 617 | pj_strassign(&headers->header[headers->count++].value, val); |
| 618 | return PJ_SUCCESS; |
| 619 | } |
| 620 | |
| 621 | static pj_status_t http_response_parse(pj_pool_t *pool, |
| 622 | pj_http_resp *response, |
| 623 | void *data, pj_size_t size, |
| 624 | pj_size_t *remainder) |
| 625 | { |
| 626 | pj_size_t i; |
| 627 | char *cptr; |
| 628 | char *end_status, *newdata; |
| 629 | pj_scanner scanner; |
| 630 | pj_str_t s; |
| 631 | const pj_str_t STR_CONTENT_LENGTH = { CONTENT_LENGTH, 14 }; |
| 632 | pj_status_t status; |
| 633 | |
| 634 | PJ_USE_EXCEPTION; |
| 635 | |
| 636 | PJ_ASSERT_RETURN(response, PJ_EINVAL); |
| 637 | if (size < 2) |
| 638 | return PJLIB_UTIL_EHTTPINCHDR; |
| 639 | /* Detect whether we already receive the response's status-line |
| 640 | * and its headers. We're looking for a pair of CRLFs. A pair of |
| 641 | * LFs is also supported although it is not RFC standard. |
| 642 | */ |
| 643 | cptr = (char *)data; |
| 644 | for (i = 1, cptr++; i < size; i++, cptr++) { |
| 645 | if (*cptr == '\n') { |
| 646 | if (*(cptr - 1) == '\n') |
| 647 | break; |
| 648 | if (*(cptr - 1) == '\r') { |
| 649 | if (i >= 3 && *(cptr - 2) == '\n' && *(cptr - 3) == '\r') |
| 650 | break; |
| 651 | } |
| 652 | } |
| 653 | } |
| 654 | if (i == size) |
| 655 | return PJLIB_UTIL_EHTTPINCHDR; |
| 656 | *remainder = size - 1 - i; |
| 657 | |
| 658 | pj_bzero(response, sizeof(response)); |
| 659 | response->content_length = -1; |
| 660 | |
| 661 | newdata = (char*) pj_pool_alloc(pool, i); |
| 662 | pj_memcpy(newdata, data, i); |
| 663 | |
| 664 | /* Parse the status-line. */ |
| 665 | pj_scan_init(&scanner, newdata, i, 0, &on_syntax_error); |
| 666 | PJ_TRY { |
| 667 | pj_scan_get_until_ch(&scanner, ' ', &response->version); |
| 668 | pj_scan_advance_n(&scanner, 1, PJ_FALSE); |
| 669 | pj_scan_get_until_ch(&scanner, ' ', &s); |
| 670 | response->status_code = (pj_uint16_t)pj_strtoul(&s); |
| 671 | pj_scan_advance_n(&scanner, 1, PJ_FALSE); |
| 672 | pj_scan_get_until_ch(&scanner, '\n', &response->reason); |
| 673 | if (response->reason.ptr[response->reason.slen-1] == '\r') |
| 674 | response->reason.slen--; |
| 675 | } |
| 676 | PJ_CATCH_ANY { |
| 677 | pj_scan_fini(&scanner); |
| 678 | return PJ_GET_EXCEPTION(); |
| 679 | } |
| 680 | PJ_END; |
| 681 | |
| 682 | end_status = scanner.curptr; |
| 683 | pj_scan_fini(&scanner); |
| 684 | |
| 685 | /* Parse the response headers. */ |
| 686 | size = i - 2 - (end_status - newdata); |
| 687 | if (size > 0) { |
| 688 | status = http_headers_parse(end_status + 1, size, |
| 689 | &response->headers); |
| 690 | } else { |
| 691 | status = PJ_SUCCESS; |
| 692 | } |
| 693 | |
| 694 | /* Find content-length header field. */ |
| 695 | for (i = 0; i < response->headers.count; i++) { |
| 696 | if (!pj_stricmp(&response->headers.header[i].name, |
| 697 | &STR_CONTENT_LENGTH)) |
| 698 | { |
| 699 | response->content_length = |
| 700 | pj_strtoul(&response->headers.header[i].value); |
| 701 | /* If content length is zero, make sure that it is because the |
| 702 | * header value is really zero and not due to parsing error. |
| 703 | */ |
| 704 | if (response->content_length == 0) { |
| 705 | if (pj_strcmp2(&response->headers.header[i].value, "0")) { |
| 706 | response->content_length = -1; |
| 707 | } |
| 708 | } |
| 709 | break; |
| 710 | } |
| 711 | } |
| 712 | |
| 713 | return status; |
| 714 | } |
| 715 | |
| 716 | static pj_status_t http_headers_parse(char *hdata, pj_size_t size, |
| 717 | pj_http_headers *headers) |
| 718 | { |
| 719 | pj_scanner scanner; |
| 720 | pj_str_t s, s2; |
| 721 | pj_status_t status; |
| 722 | PJ_USE_EXCEPTION; |
| 723 | |
| 724 | PJ_ASSERT_RETURN(headers, PJ_EINVAL); |
| 725 | |
| 726 | pj_scan_init(&scanner, hdata, size, 0, &on_syntax_error); |
| 727 | |
| 728 | /* Parse each line of header field consisting of header field name and |
| 729 | * value, separated by ":" and any number of white spaces. |
| 730 | */ |
| 731 | PJ_TRY { |
| 732 | do { |
| 733 | pj_scan_get_until_chr(&scanner, ":\n", &s); |
| 734 | if (*scanner.curptr == ':') { |
| 735 | pj_scan_advance_n(&scanner, 1, PJ_TRUE); |
| 736 | pj_scan_get_until_ch(&scanner, '\n', &s2); |
| 737 | if (s2.ptr[s2.slen-1] == '\r') |
| 738 | s2.slen--; |
| 739 | status = pj_http_headers_add_elmt(headers, &s, &s2); |
| 740 | if (status != PJ_SUCCESS) |
| 741 | PJ_THROW(status); |
| 742 | } |
| 743 | pj_scan_advance_n(&scanner, 1, PJ_TRUE); |
| 744 | /* Finish parsing */ |
| 745 | if (pj_scan_is_eof(&scanner)) |
| 746 | break; |
| 747 | } while (1); |
| 748 | } |
| 749 | PJ_CATCH_ANY { |
| 750 | pj_scan_fini(&scanner); |
| 751 | return PJ_GET_EXCEPTION(); |
| 752 | } |
| 753 | PJ_END; |
| 754 | |
| 755 | pj_scan_fini(&scanner); |
| 756 | |
| 757 | return PJ_SUCCESS; |
| 758 | } |
| 759 | |
| 760 | PJ_DEF(void) pj_http_req_param_default(pj_http_req_param *param) |
| 761 | { |
| 762 | pj_assert(param); |
| 763 | pj_bzero(param, sizeof(*param)); |
| 764 | param->addr_family = pj_AF_INET(); |
| 765 | pj_strset2(¶m->method, (char*)http_method_names[HTTP_GET]); |
| 766 | pj_strset2(¶m->version, (char*)HTTP_1_0); |
| 767 | param->timeout.msec = PJ_HTTP_DEFAULT_TIMEOUT; |
| 768 | pj_time_val_normalize(¶m->timeout); |
| 769 | param->max_retries = 3; |
| 770 | } |
| 771 | |
| 772 | /* Get the location of '@' character to indicate the end of |
| 773 | * user:passwd part of an URI. If user:passwd part is not |
| 774 | * present, NULL will be returned. |
| 775 | */ |
| 776 | static char *get_url_at_pos(const char *str, pj_size_t len) |
| 777 | { |
| 778 | const char *end = str + len; |
| 779 | const char *p = str; |
| 780 | |
| 781 | /* skip scheme: */ |
| 782 | while (p!=end && *p!='/') ++p; |
| 783 | if (p!=end && *p=='/') ++p; |
| 784 | if (p!=end && *p=='/') ++p; |
| 785 | if (p==end) return NULL; |
| 786 | |
| 787 | for (; p!=end; ++p) { |
| 788 | switch (*p) { |
| 789 | case '/': |
| 790 | return NULL; |
| 791 | case '@': |
| 792 | return (char*)p; |
| 793 | } |
| 794 | } |
| 795 | |
| 796 | return NULL; |
| 797 | } |
| 798 | |
| 799 | |
| 800 | PJ_DEF(pj_status_t) pj_http_req_parse_url(const pj_str_t *url, |
| 801 | pj_http_url *hurl) |
| 802 | { |
| 803 | pj_scanner scanner; |
| 804 | pj_size_t len = url->slen; |
| 805 | PJ_USE_EXCEPTION; |
| 806 | |
| 807 | if (!len) return -1; |
| 808 | |
| 809 | pj_bzero(hurl, sizeof(*hurl)); |
| 810 | pj_scan_init(&scanner, url->ptr, url->slen, 0, &on_syntax_error); |
| 811 | |
| 812 | PJ_TRY { |
| 813 | pj_str_t s; |
| 814 | |
| 815 | /* Exhaust any whitespaces. */ |
| 816 | pj_scan_skip_whitespace(&scanner); |
| 817 | |
| 818 | /* Parse the protocol */ |
| 819 | pj_scan_get_until_ch(&scanner, ':', &s); |
| 820 | if (!pj_stricmp2(&s, http_protocol_names[PROTOCOL_HTTP])) { |
| 821 | pj_strset2(&hurl->protocol, |
| 822 | (char*)http_protocol_names[PROTOCOL_HTTP]); |
| 823 | } else if (!pj_stricmp2(&s, http_protocol_names[PROTOCOL_HTTPS])) { |
| 824 | pj_strset2(&hurl->protocol, |
| 825 | (char*)http_protocol_names[PROTOCOL_HTTPS]); |
| 826 | } else { |
| 827 | PJ_THROW(PJ_ENOTSUP); // unsupported protocol |
| 828 | } |
| 829 | |
| 830 | if (pj_scan_strcmp(&scanner, "://", 3)) { |
| 831 | PJ_THROW(PJLIB_UTIL_EHTTPINURL); // no "://" after protocol name |
| 832 | } |
| 833 | pj_scan_advance_n(&scanner, 3, PJ_FALSE); |
| 834 | |
| 835 | if (get_url_at_pos(url->ptr, url->slen)) { |
| 836 | /* Parse username and password */ |
| 837 | pj_scan_get_until_chr(&scanner, ":@", &hurl->username); |
| 838 | if (*scanner.curptr == ':') { |
| 839 | pj_scan_get_char(&scanner); |
| 840 | pj_scan_get_until_chr(&scanner, "@", &hurl->passwd); |
| 841 | } else { |
| 842 | hurl->passwd.slen = 0; |
| 843 | } |
| 844 | pj_scan_get_char(&scanner); |
| 845 | } |
| 846 | |
| 847 | /* Parse the host and port number (if any) */ |
| 848 | pj_scan_get_until_chr(&scanner, ":/", &s); |
| 849 | pj_strassign(&hurl->host, &s); |
| 850 | if (hurl->host.slen==0) |
| 851 | PJ_THROW(PJ_EINVAL); |
| 852 | if (pj_scan_is_eof(&scanner) || *scanner.curptr == '/') { |
| 853 | /* No port number specified */ |
| 854 | /* Assume default http/https port number */ |
| 855 | hurl->port = get_http_default_port(&hurl->protocol); |
| 856 | pj_assert(hurl->port > 0); |
| 857 | } else { |
| 858 | pj_scan_advance_n(&scanner, 1, PJ_FALSE); |
| 859 | pj_scan_get_until_ch(&scanner, '/', &s); |
| 860 | /* Parse the port number */ |
| 861 | hurl->port = (pj_uint16_t)pj_strtoul(&s); |
| 862 | if (!hurl->port) |
| 863 | PJ_THROW(PJLIB_UTIL_EHTTPINPORT); // invalid port number |
| 864 | } |
| 865 | |
| 866 | if (!pj_scan_is_eof(&scanner)) { |
| 867 | hurl->path.ptr = scanner.curptr; |
| 868 | hurl->path.slen = scanner.end - scanner.curptr; |
| 869 | } else { |
| 870 | /* no path, append '/' */ |
| 871 | pj_cstr(&hurl->path, "/"); |
| 872 | } |
| 873 | } |
| 874 | PJ_CATCH_ANY { |
| 875 | pj_scan_fini(&scanner); |
| 876 | return PJ_GET_EXCEPTION(); |
| 877 | } |
| 878 | PJ_END; |
| 879 | |
| 880 | pj_scan_fini(&scanner); |
| 881 | return PJ_SUCCESS; |
| 882 | } |
| 883 | |
| 884 | PJ_DEF(void) pj_http_req_set_timeout(pj_http_req *http_req, |
| 885 | const pj_time_val* timeout) |
| 886 | { |
| 887 | pj_memcpy(&http_req->param.timeout, timeout, sizeof(*timeout)); |
| 888 | } |
| 889 | |
| 890 | PJ_DEF(pj_status_t) pj_http_req_create(pj_pool_t *pool, |
| 891 | const pj_str_t *url, |
| 892 | pj_timer_heap_t *timer, |
| 893 | pj_ioqueue_t *ioqueue, |
| 894 | const pj_http_req_param *param, |
| 895 | const pj_http_req_callback *hcb, |
| 896 | pj_http_req **http_req) |
| 897 | { |
| 898 | pj_pool_t *own_pool; |
| 899 | pj_http_req *hreq; |
| 900 | char *at_pos; |
| 901 | pj_status_t status; |
| 902 | |
| 903 | PJ_ASSERT_RETURN(pool && url && timer && ioqueue && |
| 904 | hcb && http_req, PJ_EINVAL); |
| 905 | |
| 906 | *http_req = NULL; |
| 907 | own_pool = pj_pool_create(pool->factory, NULL, INITIAL_POOL_SIZE, |
| 908 | POOL_INCREMENT_SIZE, NULL); |
| 909 | hreq = PJ_POOL_ZALLOC_T(own_pool, struct pj_http_req); |
| 910 | if (!hreq) |
| 911 | return PJ_ENOMEM; |
| 912 | |
| 913 | /* Initialization */ |
| 914 | hreq->pool = own_pool; |
| 915 | hreq->ioqueue = ioqueue; |
| 916 | hreq->timer = timer; |
| 917 | hreq->asock = NULL; |
| 918 | pj_memcpy(&hreq->cb, hcb, sizeof(*hcb)); |
| 919 | hreq->state = IDLE; |
| 920 | hreq->resolved = PJ_FALSE; |
| 921 | hreq->buffer.ptr = NULL; |
| 922 | pj_timer_entry_init(&hreq->timer_entry, 0, hreq, &on_timeout); |
| 923 | |
| 924 | /* Initialize parameter */ |
| 925 | if (param) { |
| 926 | pj_memcpy(&hreq->param, param, sizeof(*param)); |
| 927 | /* TODO: validate the param here |
| 928 | * Should we validate the method as well? If yes, based on all HTTP |
| 929 | * methods or based on supported methods only? For the later, one |
| 930 | * drawback would be that you can't use this if the method is not |
| 931 | * officially supported |
| 932 | */ |
| 933 | PJ_ASSERT_RETURN(hreq->param.addr_family==PJ_AF_UNSPEC || |
| 934 | hreq->param.addr_family==PJ_AF_INET || |
| 935 | hreq->param.addr_family==PJ_AF_INET6, PJ_EAFNOTSUP); |
| 936 | PJ_ASSERT_RETURN(!pj_strcmp2(&hreq->param.version, HTTP_1_0) || |
| 937 | !pj_strcmp2(&hreq->param.version, HTTP_1_1), |
| 938 | PJ_ENOTSUP); |
| 939 | pj_time_val_normalize(&hreq->param.timeout); |
| 940 | } else { |
| 941 | pj_http_req_param_default(&hreq->param); |
| 942 | } |
| 943 | |
| 944 | /* Parse the URL */ |
| 945 | if (!pj_strdup_with_null(hreq->pool, &hreq->url, url)) { |
| 946 | pj_pool_release(hreq->pool); |
| 947 | return PJ_ENOMEM; |
| 948 | } |
| 949 | status = pj_http_req_parse_url(&hreq->url, &hreq->hurl); |
| 950 | if (status != PJ_SUCCESS) { |
| 951 | pj_pool_release(hreq->pool); |
| 952 | return status; // Invalid URL supplied |
| 953 | } |
| 954 | |
| 955 | /* If URL contains username/password, move them to credential and |
| 956 | * remove them from the URL. |
| 957 | */ |
| 958 | if ((at_pos=get_url_at_pos(hreq->url.ptr, hreq->url.slen)) != NULL) { |
| 959 | pj_str_t tmp; |
| 960 | char *user_pos = pj_strchr(&hreq->url, '/'); |
| 961 | int removed_len; |
| 962 | |
| 963 | /* Save credential first, unescape the string */ |
| 964 | tmp = pj_str_unescape(hreq->pool, &hreq->hurl.username);; |
| 965 | pj_strdup(hreq->pool, &hreq->param.auth_cred.username, &tmp); |
| 966 | |
| 967 | tmp = pj_str_unescape(hreq->pool, &hreq->hurl.passwd); |
| 968 | pj_strdup(hreq->pool, &hreq->param.auth_cred.data, &tmp); |
| 969 | |
| 970 | hreq->hurl.username.ptr = hreq->hurl.passwd.ptr = NULL; |
| 971 | hreq->hurl.username.slen = hreq->hurl.passwd.slen = 0; |
| 972 | |
| 973 | /* Remove "username:password@" from the URL */ |
| 974 | pj_assert(user_pos != 0 && user_pos < at_pos); |
| 975 | user_pos += 2; |
| 976 | removed_len = (int)(at_pos + 1 - user_pos); |
| 977 | pj_memmove(user_pos, at_pos+1, hreq->url.ptr+hreq->url.slen-at_pos-1); |
| 978 | hreq->url.slen -= removed_len; |
| 979 | |
| 980 | /* Need to adjust hostname and path pointers due to memmove*/ |
| 981 | if (hreq->hurl.host.ptr > user_pos && |
| 982 | hreq->hurl.host.ptr < user_pos + hreq->url.slen) |
| 983 | { |
| 984 | hreq->hurl.host.ptr -= removed_len; |
| 985 | } |
| 986 | /* path may come from a string constant, don't shift it if so */ |
| 987 | if (hreq->hurl.path.ptr > user_pos && |
| 988 | hreq->hurl.path.ptr < user_pos + hreq->url.slen) |
| 989 | { |
| 990 | hreq->hurl.path.ptr -= removed_len; |
| 991 | } |
| 992 | } |
| 993 | |
| 994 | *http_req = hreq; |
| 995 | return PJ_SUCCESS; |
| 996 | } |
| 997 | |
| 998 | PJ_DEF(pj_bool_t) pj_http_req_is_running(const pj_http_req *http_req) |
| 999 | { |
| 1000 | PJ_ASSERT_RETURN(http_req, PJ_FALSE); |
| 1001 | return (http_req->state != IDLE); |
| 1002 | } |
| 1003 | |
| 1004 | PJ_DEF(void*) pj_http_req_get_user_data(pj_http_req *http_req) |
| 1005 | { |
| 1006 | PJ_ASSERT_RETURN(http_req, NULL); |
| 1007 | return http_req->param.user_data; |
| 1008 | } |
| 1009 | |
| 1010 | static pj_status_t start_http_req(pj_http_req *http_req, |
| 1011 | pj_bool_t notify_on_fail) |
| 1012 | { |
| 1013 | pj_sock_t sock = PJ_INVALID_SOCKET; |
| 1014 | pj_status_t status; |
| 1015 | pj_activesock_cb asock_cb; |
| 1016 | int retry = 0; |
| 1017 | |
| 1018 | PJ_ASSERT_RETURN(http_req, PJ_EINVAL); |
| 1019 | /* Http request is not idle, a request was initiated before and |
| 1020 | * is still in progress |
| 1021 | */ |
| 1022 | PJ_ASSERT_RETURN(http_req->state == IDLE, PJ_EBUSY); |
| 1023 | |
| 1024 | /* Reset few things to make sure restarting works */ |
| 1025 | http_req->error = 0; |
| 1026 | http_req->response.headers.count = 0; |
| 1027 | pj_bzero(&http_req->tcp_state, sizeof(http_req->tcp_state)); |
| 1028 | |
| 1029 | if (!http_req->resolved) { |
| 1030 | /* Resolve the Internet address of the host */ |
| 1031 | status = pj_sockaddr_init(http_req->param.addr_family, |
| 1032 | &http_req->addr, &http_req->hurl.host, |
| 1033 | http_req->hurl.port); |
| 1034 | if (status != PJ_SUCCESS || |
| 1035 | !pj_sockaddr_has_addr(&http_req->addr) || |
| 1036 | (http_req->param.addr_family==pj_AF_INET() && |
| 1037 | http_req->addr.ipv4.sin_addr.s_addr==PJ_INADDR_NONE)) |
| 1038 | { |
| 1039 | goto on_return; |
| 1040 | } |
| 1041 | http_req->resolved = PJ_TRUE; |
| 1042 | } |
| 1043 | |
| 1044 | status = pj_sock_socket(http_req->param.addr_family, pj_SOCK_STREAM(), |
| 1045 | 0, &sock); |
| 1046 | if (status != PJ_SUCCESS) |
| 1047 | goto on_return; // error creating socket |
| 1048 | |
| 1049 | pj_bzero(&asock_cb, sizeof(asock_cb)); |
| 1050 | asock_cb.on_data_read = &http_on_data_read; |
| 1051 | asock_cb.on_data_sent = &http_on_data_sent; |
| 1052 | asock_cb.on_connect_complete = &http_on_connect; |
| 1053 | |
| 1054 | do |
| 1055 | { |
| 1056 | pj_sockaddr_in bound_addr; |
| 1057 | pj_uint16_t port = 0; |
| 1058 | |
| 1059 | /* If we are using port restriction. |
| 1060 | * Get a random port within the range |
| 1061 | */ |
| 1062 | if (http_req->param.source_port_range_start != 0) { |
| 1063 | port = (pj_uint16_t) |
| 1064 | (http_req->param.source_port_range_start + |
| 1065 | (pj_rand() % http_req->param.source_port_range_size)); |
| 1066 | } |
| 1067 | |
| 1068 | pj_sockaddr_in_init(&bound_addr, NULL, port); |
| 1069 | status = pj_sock_bind(sock, &bound_addr, sizeof(bound_addr)); |
| 1070 | |
| 1071 | } while (status != PJ_SUCCESS && (retry++ < http_req->param.max_retries)); |
| 1072 | |
| 1073 | if (status != PJ_SUCCESS) { |
| 1074 | PJ_PERROR(1,(THIS_FILE, status, |
| 1075 | "Unable to bind to the requested port")); |
| 1076 | pj_sock_close(sock); |
| 1077 | goto on_return; |
| 1078 | } |
| 1079 | |
| 1080 | // TODO: should we set whole data to 0 by default? |
| 1081 | // or add it in the param? |
| 1082 | status = pj_activesock_create(http_req->pool, sock, pj_SOCK_STREAM(), |
| 1083 | NULL, http_req->ioqueue, |
| 1084 | &asock_cb, http_req, &http_req->asock); |
| 1085 | if (status != PJ_SUCCESS) { |
| 1086 | pj_sock_close(sock); |
| 1087 | goto on_return; // error creating activesock |
| 1088 | } |
| 1089 | |
| 1090 | /* Schedule timeout timer for the request */ |
| 1091 | pj_assert(http_req->timer_entry.id == 0); |
| 1092 | http_req->timer_entry.id = 1; |
| 1093 | status = pj_timer_heap_schedule(http_req->timer, &http_req->timer_entry, |
| 1094 | &http_req->param.timeout); |
| 1095 | if (status != PJ_SUCCESS) { |
| 1096 | http_req->timer_entry.id = 0; |
| 1097 | goto on_return; // error scheduling timer |
| 1098 | } |
| 1099 | |
| 1100 | /* Connect to host */ |
| 1101 | http_req->state = CONNECTING; |
| 1102 | status = pj_activesock_start_connect(http_req->asock, http_req->pool, |
| 1103 | (pj_sock_t *)&(http_req->addr), |
| 1104 | pj_sockaddr_get_len(&http_req->addr)); |
| 1105 | if (status == PJ_SUCCESS) { |
| 1106 | http_req->state = SENDING_REQUEST; |
| 1107 | status = http_req_start_sending(http_req); |
| 1108 | if (status != PJ_SUCCESS) |
| 1109 | goto on_return; |
| 1110 | } else if (status != PJ_EPENDING) { |
| 1111 | goto on_return; // error connecting |
| 1112 | } |
| 1113 | |
| 1114 | return PJ_SUCCESS; |
| 1115 | |
| 1116 | on_return: |
| 1117 | http_req->error = status; |
| 1118 | if (notify_on_fail) |
| 1119 | pj_http_req_cancel(http_req, PJ_TRUE); |
| 1120 | else |
| 1121 | http_req_end_request(http_req); |
| 1122 | |
| 1123 | return status; |
| 1124 | } |
| 1125 | |
| 1126 | /* Starts an asynchronous HTTP request to the URL specified. */ |
| 1127 | PJ_DEF(pj_status_t) pj_http_req_start(pj_http_req *http_req) |
| 1128 | { |
| 1129 | return start_http_req(http_req, PJ_FALSE); |
| 1130 | } |
| 1131 | |
| 1132 | /* Respond to basic authentication challenge */ |
| 1133 | static pj_status_t auth_respond_basic(pj_http_req *hreq) |
| 1134 | { |
| 1135 | /* Basic authentication: |
| 1136 | * credentials = "Basic" basic-credentials |
| 1137 | * basic-credentials = base64-user-pass |
| 1138 | * base64-user-pass = <base64 [4] encoding of user-pass> |
| 1139 | * user-pass = userid ":" password |
| 1140 | * |
| 1141 | * Sample: |
| 1142 | * Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ== |
| 1143 | */ |
| 1144 | pj_str_t user_pass; |
| 1145 | pj_http_header_elmt *phdr; |
| 1146 | int len; |
| 1147 | |
| 1148 | /* Use send buffer to store userid ":" password */ |
| 1149 | user_pass.ptr = hreq->buffer.ptr; |
| 1150 | pj_strcpy(&user_pass, &hreq->param.auth_cred.username); |
| 1151 | pj_strcat2(&user_pass, ":"); |
| 1152 | pj_strcat(&user_pass, &hreq->param.auth_cred.data); |
| 1153 | |
| 1154 | /* Create Authorization header */ |
| 1155 | phdr = &hreq->param.headers.header[hreq->param.headers.count++]; |
| 1156 | pj_bzero(phdr, sizeof(*phdr)); |
| 1157 | if (hreq->response.status_code == 401) |
| 1158 | phdr->name = pj_str("Authorization"); |
| 1159 | else |
| 1160 | phdr->name = pj_str("Proxy-Authorization"); |
| 1161 | |
| 1162 | len = (int)(PJ_BASE256_TO_BASE64_LEN(user_pass.slen) + 10); |
| 1163 | phdr->value.ptr = (char*)pj_pool_alloc(hreq->pool, len); |
| 1164 | phdr->value.slen = 0; |
| 1165 | |
| 1166 | pj_strcpy2(&phdr->value, "Basic "); |
| 1167 | len -= (int)phdr->value.slen; |
| 1168 | pj_base64_encode((pj_uint8_t*)user_pass.ptr, (int)user_pass.slen, |
| 1169 | phdr->value.ptr + phdr->value.slen, &len); |
| 1170 | phdr->value.slen += len; |
| 1171 | |
| 1172 | return PJ_SUCCESS; |
| 1173 | } |
| 1174 | |
| 1175 | /** Length of digest string. */ |
| 1176 | #define MD5_STRLEN 32 |
| 1177 | /* A macro just to get rid of type mismatch between char and unsigned char */ |
| 1178 | #define MD5_APPEND(pms,buf,len) pj_md5_update(pms, (const pj_uint8_t*)buf, \ |
| 1179 | (unsigned)len) |
| 1180 | |
| 1181 | /* Transform digest to string. |
| 1182 | * output must be at least PJSIP_MD5STRLEN+1 bytes. |
| 1183 | * |
| 1184 | * NOTE: THE OUTPUT STRING IS NOT NULL TERMINATED! |
| 1185 | */ |
| 1186 | static void digest2str(const unsigned char digest[], char *output) |
| 1187 | { |
| 1188 | int i; |
| 1189 | for (i = 0; i<16; ++i) { |
| 1190 | pj_val_to_hex_digit(digest[i], output); |
| 1191 | output += 2; |
| 1192 | } |
| 1193 | } |
| 1194 | |
| 1195 | static void auth_create_digest_response(pj_str_t *result, |
| 1196 | const pj_http_auth_cred *cred, |
| 1197 | const pj_str_t *nonce, |
| 1198 | const pj_str_t *nc, |
| 1199 | const pj_str_t *cnonce, |
| 1200 | const pj_str_t *qop, |
| 1201 | const pj_str_t *uri, |
| 1202 | const pj_str_t *realm, |
| 1203 | const pj_str_t *method) |
| 1204 | { |
| 1205 | char ha1[MD5_STRLEN]; |
| 1206 | char ha2[MD5_STRLEN]; |
| 1207 | unsigned char digest[16]; |
| 1208 | pj_md5_context pms; |
| 1209 | |
| 1210 | pj_assert(result->slen >= MD5_STRLEN); |
| 1211 | |
| 1212 | TRACE_((THIS_FILE, "Begin creating digest")); |
| 1213 | |
| 1214 | if (cred->data_type == 0) { |
| 1215 | /*** |
| 1216 | *** ha1 = MD5(username ":" realm ":" password) |
| 1217 | ***/ |
| 1218 | pj_md5_init(&pms); |
| 1219 | MD5_APPEND( &pms, cred->username.ptr, cred->username.slen); |
| 1220 | MD5_APPEND( &pms, ":", 1); |
| 1221 | MD5_APPEND( &pms, realm->ptr, realm->slen); |
| 1222 | MD5_APPEND( &pms, ":", 1); |
| 1223 | MD5_APPEND( &pms, cred->data.ptr, cred->data.slen); |
| 1224 | pj_md5_final(&pms, digest); |
| 1225 | |
| 1226 | digest2str(digest, ha1); |
| 1227 | |
| 1228 | } else if (cred->data_type == 1) { |
| 1229 | pj_assert(cred->data.slen == 32); |
| 1230 | pj_memcpy( ha1, cred->data.ptr, cred->data.slen ); |
| 1231 | } else { |
| 1232 | pj_assert(!"Invalid data_type"); |
| 1233 | } |
| 1234 | |
| 1235 | TRACE_((THIS_FILE, " ha1=%.32s", ha1)); |
| 1236 | |
| 1237 | /*** |
| 1238 | *** ha2 = MD5(method ":" req_uri) |
| 1239 | ***/ |
| 1240 | pj_md5_init(&pms); |
| 1241 | MD5_APPEND( &pms, method->ptr, method->slen); |
| 1242 | MD5_APPEND( &pms, ":", 1); |
| 1243 | MD5_APPEND( &pms, uri->ptr, uri->slen); |
| 1244 | pj_md5_final(&pms, digest); |
| 1245 | digest2str(digest, ha2); |
| 1246 | |
| 1247 | TRACE_((THIS_FILE, " ha2=%.32s", ha2)); |
| 1248 | |
| 1249 | /*** |
| 1250 | *** When qop is not used: |
| 1251 | *** response = MD5(ha1 ":" nonce ":" ha2) |
| 1252 | *** |
| 1253 | *** When qop=auth is used: |
| 1254 | *** response = MD5(ha1 ":" nonce ":" nc ":" cnonce ":" qop ":" ha2) |
| 1255 | ***/ |
| 1256 | pj_md5_init(&pms); |
| 1257 | MD5_APPEND( &pms, ha1, MD5_STRLEN); |
| 1258 | MD5_APPEND( &pms, ":", 1); |
| 1259 | MD5_APPEND( &pms, nonce->ptr, nonce->slen); |
| 1260 | if (qop && qop->slen != 0) { |
| 1261 | MD5_APPEND( &pms, ":", 1); |
| 1262 | MD5_APPEND( &pms, nc->ptr, nc->slen); |
| 1263 | MD5_APPEND( &pms, ":", 1); |
| 1264 | MD5_APPEND( &pms, cnonce->ptr, cnonce->slen); |
| 1265 | MD5_APPEND( &pms, ":", 1); |
| 1266 | MD5_APPEND( &pms, qop->ptr, qop->slen); |
| 1267 | } |
| 1268 | MD5_APPEND( &pms, ":", 1); |
| 1269 | MD5_APPEND( &pms, ha2, MD5_STRLEN); |
| 1270 | |
| 1271 | /* This is the final response digest. */ |
| 1272 | pj_md5_final(&pms, digest); |
| 1273 | |
| 1274 | /* Convert digest to string and store in chal->response. */ |
| 1275 | result->slen = MD5_STRLEN; |
| 1276 | digest2str(digest, result->ptr); |
| 1277 | |
| 1278 | TRACE_((THIS_FILE, " digest=%.32s", result->ptr)); |
| 1279 | TRACE_((THIS_FILE, "Digest created")); |
| 1280 | } |
| 1281 | |
| 1282 | /* Find out if qop offer contains "auth" token */ |
| 1283 | static pj_bool_t auth_has_qop( pj_pool_t *pool, const pj_str_t *qop_offer) |
| 1284 | { |
| 1285 | pj_str_t qop; |
| 1286 | char *p; |
| 1287 | |
| 1288 | pj_strdup_with_null( pool, &qop, qop_offer); |
| 1289 | p = qop.ptr; |
| 1290 | while (*p) { |
| 1291 | *p = (char)pj_tolower(*p); |
| 1292 | ++p; |
| 1293 | } |
| 1294 | |
| 1295 | p = qop.ptr; |
| 1296 | while (*p) { |
| 1297 | if (*p=='a' && *(p+1)=='u' && *(p+2)=='t' && *(p+3)=='h') { |
| 1298 | int e = *(p+4); |
| 1299 | if (e=='"' || e==',' || e==0) |
| 1300 | return PJ_TRUE; |
| 1301 | else |
| 1302 | p += 4; |
| 1303 | } else { |
| 1304 | ++p; |
| 1305 | } |
| 1306 | } |
| 1307 | |
| 1308 | return PJ_FALSE; |
| 1309 | } |
| 1310 | |
| 1311 | #define STR_PREC(s) (int)(s).slen, (s).ptr |
| 1312 | |
| 1313 | /* Respond to digest authentication */ |
| 1314 | static pj_status_t auth_respond_digest(pj_http_req *hreq) |
| 1315 | { |
| 1316 | const pj_http_auth_chal *chal = &hreq->response.auth_chal; |
| 1317 | const pj_http_auth_cred *cred = &hreq->param.auth_cred; |
| 1318 | pj_http_header_elmt *phdr; |
| 1319 | char digest_response_buf[MD5_STRLEN]; |
| 1320 | int len; |
| 1321 | pj_str_t digest_response; |
| 1322 | |
| 1323 | /* Check algorithm is supported. We only support MD5 */ |
| 1324 | if (chal->algorithm.slen!=0 && |
| 1325 | pj_stricmp2(&chal->algorithm, "MD5")) |
| 1326 | { |
| 1327 | TRACE_((THIS_FILE, "Error: Unsupported digest algorithm \"%.*s\"", |
| 1328 | chal->algorithm.slen, chal->algorithm.ptr)); |
| 1329 | return PJ_ENOTSUP; |
| 1330 | } |
| 1331 | |
| 1332 | /* Add Authorization header */ |
| 1333 | phdr = &hreq->param.headers.header[hreq->param.headers.count++]; |
| 1334 | pj_bzero(phdr, sizeof(*phdr)); |
| 1335 | if (hreq->response.status_code == 401) |
| 1336 | phdr->name = pj_str("Authorization"); |
| 1337 | else |
| 1338 | phdr->name = pj_str("Proxy-Authorization"); |
| 1339 | |
| 1340 | /* Allocate space for the header */ |
| 1341 | len = (int)(8 + /* Digest */ |
| 1342 | 16 + hreq->param.auth_cred.username.slen + /* username= */ |
| 1343 | 12 + chal->realm.slen + /* realm= */ |
| 1344 | 12 + chal->nonce.slen + /* nonce= */ |
| 1345 | 8 + hreq->hurl.path.slen + /* uri= */ |
| 1346 | 16 + /* algorithm=MD5 */ |
| 1347 | 16 + MD5_STRLEN + /* response= */ |
| 1348 | 12 + /* qop=auth */ |
| 1349 | 8 + /* nc=.. */ |
| 1350 | 30 + /* cnonce= */ |
| 1351 | 12 + chal->opaque.slen + /* opaque=".." */ |
| 1352 | 0); |
| 1353 | phdr->value.ptr = (char*)pj_pool_alloc(hreq->pool, len); |
| 1354 | |
| 1355 | /* Configure buffer to temporarily store the digest */ |
| 1356 | digest_response.ptr = digest_response_buf; |
| 1357 | digest_response.slen = MD5_STRLEN; |
| 1358 | |
| 1359 | if (chal->qop.slen == 0) { |
| 1360 | const pj_str_t STR_MD5 = { "MD5", 3 }; |
| 1361 | |
| 1362 | /* Server doesn't require quality of protection. */ |
| 1363 | auth_create_digest_response(&digest_response, cred, |
| 1364 | &chal->nonce, NULL, NULL, NULL, |
| 1365 | &hreq->hurl.path, &chal->realm, |
| 1366 | &hreq->param.method); |
| 1367 | |
| 1368 | len = pj_ansi_snprintf( |
| 1369 | phdr->value.ptr, len, |
| 1370 | "Digest username=\"%.*s\", " |
| 1371 | "realm=\"%.*s\", " |
| 1372 | "nonce=\"%.*s\", " |
| 1373 | "uri=\"%.*s\", " |
| 1374 | "algorithm=%.*s, " |
| 1375 | "response=\"%.*s\"", |
| 1376 | STR_PREC(cred->username), |
| 1377 | STR_PREC(chal->realm), |
| 1378 | STR_PREC(chal->nonce), |
| 1379 | STR_PREC(hreq->hurl.path), |
| 1380 | STR_PREC(STR_MD5), |
| 1381 | STR_PREC(digest_response)); |
| 1382 | if (len < 0) |
| 1383 | return PJ_ETOOSMALL; |
| 1384 | phdr->value.slen = len; |
| 1385 | |
| 1386 | } else if (auth_has_qop(hreq->pool, &chal->qop)) { |
| 1387 | /* Server requires quality of protection. |
| 1388 | * We respond with selecting "qop=auth" protection. |
| 1389 | */ |
| 1390 | const pj_str_t STR_MD5 = { "MD5", 3 }; |
| 1391 | const pj_str_t qop = pj_str("auth"); |
| 1392 | const pj_str_t nc = pj_str("00000001"); |
| 1393 | const pj_str_t cnonce = pj_str("b39971"); |
| 1394 | |
| 1395 | auth_create_digest_response(&digest_response, cred, |
| 1396 | &chal->nonce, &nc, &cnonce, &qop, |
| 1397 | &hreq->hurl.path, &chal->realm, |
| 1398 | &hreq->param.method); |
| 1399 | len = pj_ansi_snprintf( |
| 1400 | phdr->value.ptr, len, |
| 1401 | "Digest username=\"%.*s\", " |
| 1402 | "realm=\"%.*s\", " |
| 1403 | "nonce=\"%.*s\", " |
| 1404 | "uri=\"%.*s\", " |
| 1405 | "algorithm=%.*s, " |
| 1406 | "response=\"%.*s\", " |
| 1407 | "qop=%.*s, " |
| 1408 | "nc=%.*s, " |
| 1409 | "cnonce=\"%.*s\"", |
| 1410 | STR_PREC(cred->username), |
| 1411 | STR_PREC(chal->realm), |
| 1412 | STR_PREC(chal->nonce), |
| 1413 | STR_PREC(hreq->hurl.path), |
| 1414 | STR_PREC(STR_MD5), |
| 1415 | STR_PREC(digest_response), |
| 1416 | STR_PREC(qop), |
| 1417 | STR_PREC(nc), |
| 1418 | STR_PREC(cnonce)); |
| 1419 | if (len < 0) |
| 1420 | return PJ_ETOOSMALL; |
| 1421 | phdr->value.slen = len; |
| 1422 | |
| 1423 | if (chal->opaque.slen) { |
| 1424 | pj_strcat2(&phdr->value, ", opaque=\""); |
| 1425 | pj_strcat(&phdr->value, &chal->opaque); |
| 1426 | pj_strcat2(&phdr->value, "\""); |
| 1427 | } |
| 1428 | |
| 1429 | } else { |
| 1430 | /* Server requires quality protection that we don't support. */ |
| 1431 | TRACE_((THIS_FILE, "Error: Unsupported qop offer %.*s", |
| 1432 | chal->qop.slen, chal->qop.ptr)); |
| 1433 | return PJ_ENOTSUP; |
| 1434 | } |
| 1435 | |
| 1436 | return PJ_SUCCESS; |
| 1437 | } |
| 1438 | |
| 1439 | |
| 1440 | static void restart_req_with_auth(pj_http_req *hreq) |
| 1441 | { |
| 1442 | pj_http_auth_chal *chal = &hreq->response.auth_chal; |
| 1443 | pj_http_auth_cred *cred = &hreq->param.auth_cred; |
| 1444 | pj_status_t status; |
| 1445 | |
| 1446 | if (hreq->param.headers.count >= PJ_HTTP_HEADER_SIZE) { |
| 1447 | TRACE_((THIS_FILE, "Error: no place to put Authorization header")); |
| 1448 | hreq->auth_state = AUTH_DONE; |
| 1449 | return; |
| 1450 | } |
| 1451 | |
| 1452 | /* If credential specifies specific scheme, make sure they match */ |
| 1453 | if (cred->scheme.slen && pj_stricmp(&chal->scheme, &cred->scheme)) { |
| 1454 | status = PJ_ENOTSUP; |
| 1455 | TRACE_((THIS_FILE, "Error: auth schemes mismatch")); |
| 1456 | goto on_error; |
| 1457 | } |
| 1458 | |
| 1459 | /* If credential specifies specific realm, make sure they match */ |
| 1460 | if (cred->realm.slen && pj_stricmp(&chal->realm, &cred->realm)) { |
| 1461 | status = PJ_ENOTSUP; |
| 1462 | TRACE_((THIS_FILE, "Error: auth realms mismatch")); |
| 1463 | goto on_error; |
| 1464 | } |
| 1465 | |
| 1466 | if (!pj_stricmp2(&chal->scheme, "basic")) { |
| 1467 | status = auth_respond_basic(hreq); |
| 1468 | } else if (!pj_stricmp2(&chal->scheme, "digest")) { |
| 1469 | status = auth_respond_digest(hreq); |
| 1470 | } else { |
| 1471 | TRACE_((THIS_FILE, "Error: unsupported HTTP auth scheme")); |
| 1472 | status = PJ_ENOTSUP; |
| 1473 | } |
| 1474 | |
| 1475 | if (status != PJ_SUCCESS) |
| 1476 | goto on_error; |
| 1477 | |
| 1478 | http_req_end_request(hreq); |
| 1479 | |
| 1480 | status = start_http_req(hreq, PJ_TRUE); |
| 1481 | if (status != PJ_SUCCESS) |
| 1482 | goto on_error; |
| 1483 | |
| 1484 | hreq->auth_state = AUTH_RETRYING; |
| 1485 | return; |
| 1486 | |
| 1487 | on_error: |
| 1488 | hreq->auth_state = AUTH_DONE; |
| 1489 | } |
| 1490 | |
| 1491 | |
| 1492 | /* snprintf() to a pj_str_t struct with an option to append the |
| 1493 | * result at the back of the string. |
| 1494 | */ |
| 1495 | void str_snprintf(pj_str_t *s, size_t size, |
| 1496 | pj_bool_t append, const char *format, ...) |
| 1497 | { |
| 1498 | va_list arg; |
| 1499 | int retval; |
| 1500 | |
| 1501 | va_start(arg, format); |
| 1502 | if (!append) |
| 1503 | s->slen = 0; |
| 1504 | size -= s->slen; |
| 1505 | retval = pj_ansi_vsnprintf(s->ptr + s->slen, |
| 1506 | size, format, arg); |
| 1507 | s->slen += ((retval < (int)size) ? retval : size - 1); |
| 1508 | va_end(arg); |
| 1509 | } |
| 1510 | |
| 1511 | static pj_status_t http_req_start_sending(pj_http_req *hreq) |
| 1512 | { |
| 1513 | pj_status_t status; |
| 1514 | pj_str_t pkt; |
| 1515 | pj_ssize_t len; |
| 1516 | pj_size_t i; |
| 1517 | |
| 1518 | PJ_ASSERT_RETURN(hreq->state == SENDING_REQUEST || |
| 1519 | hreq->state == SENDING_REQUEST_BODY, PJ_EBUG); |
| 1520 | |
| 1521 | if (hreq->state == SENDING_REQUEST) { |
| 1522 | /* Prepare the request data */ |
| 1523 | if (!hreq->buffer.ptr) |
| 1524 | hreq->buffer.ptr = (char*)pj_pool_alloc(hreq->pool, BUF_SIZE); |
| 1525 | pj_strassign(&pkt, &hreq->buffer); |
| 1526 | pkt.slen = 0; |
| 1527 | /* Start-line */ |
| 1528 | str_snprintf(&pkt, BUF_SIZE, PJ_TRUE, "%.*s %.*s %s/%.*s\r\n", |
| 1529 | STR_PREC(hreq->param.method), |
| 1530 | STR_PREC(hreq->hurl.path), |
| 1531 | get_protocol(&hreq->hurl.protocol), |
| 1532 | STR_PREC(hreq->param.version)); |
| 1533 | /* Header field "Host" */ |
| 1534 | str_snprintf(&pkt, BUF_SIZE, PJ_TRUE, "Host: %.*s:%d\r\n", |
| 1535 | STR_PREC(hreq->hurl.host), hreq->hurl.port); |
| 1536 | if (!pj_strcmp2(&hreq->param.method, http_method_names[HTTP_PUT])) { |
| 1537 | char buf[16]; |
| 1538 | |
| 1539 | /* Header field "Content-Length" */ |
| 1540 | pj_utoa(hreq->param.reqdata.total_size ? |
| 1541 | (unsigned long)hreq->param.reqdata.total_size: |
| 1542 | (unsigned long)hreq->param.reqdata.size, buf); |
| 1543 | str_snprintf(&pkt, BUF_SIZE, PJ_TRUE, "%s: %s\r\n", |
| 1544 | CONTENT_LENGTH, buf); |
| 1545 | } |
| 1546 | |
| 1547 | /* Append user-specified headers */ |
| 1548 | for (i = 0; i < hreq->param.headers.count; i++) { |
| 1549 | str_snprintf(&pkt, BUF_SIZE, PJ_TRUE, "%.*s: %.*s\r\n", |
| 1550 | STR_PREC(hreq->param.headers.header[i].name), |
| 1551 | STR_PREC(hreq->param.headers.header[i].value)); |
| 1552 | } |
| 1553 | if (pkt.slen >= BUF_SIZE - 1) { |
| 1554 | status = PJLIB_UTIL_EHTTPINSBUF; |
| 1555 | goto on_return; |
| 1556 | } |
| 1557 | |
| 1558 | pj_strcat2(&pkt, "\r\n"); |
| 1559 | pkt.ptr[pkt.slen] = 0; |
| 1560 | TRACE_((THIS_FILE, "%s", pkt.ptr)); |
| 1561 | } else { |
| 1562 | pkt.ptr = (char*)hreq->param.reqdata.data; |
| 1563 | pkt.slen = hreq->param.reqdata.size; |
| 1564 | } |
| 1565 | |
| 1566 | /* Send the request */ |
| 1567 | len = pj_strlen(&pkt); |
| 1568 | pj_ioqueue_op_key_init(&hreq->op_key, sizeof(hreq->op_key)); |
| 1569 | hreq->tcp_state.send_size = len; |
| 1570 | hreq->tcp_state.current_send_size = 0; |
| 1571 | status = pj_activesock_send(hreq->asock, &hreq->op_key, |
| 1572 | pkt.ptr, &len, 0); |
| 1573 | |
| 1574 | if (status == PJ_SUCCESS) { |
| 1575 | http_on_data_sent(hreq->asock, &hreq->op_key, len); |
| 1576 | } else if (status != PJ_EPENDING) { |
| 1577 | goto on_return; // error sending data |
| 1578 | } |
| 1579 | |
| 1580 | return PJ_SUCCESS; |
| 1581 | |
| 1582 | on_return: |
| 1583 | http_req_end_request(hreq); |
| 1584 | return status; |
| 1585 | } |
| 1586 | |
| 1587 | static pj_status_t http_req_start_reading(pj_http_req *hreq) |
| 1588 | { |
| 1589 | pj_status_t status; |
| 1590 | |
| 1591 | PJ_ASSERT_RETURN(hreq->state == REQUEST_SENT, PJ_EBUG); |
| 1592 | |
| 1593 | /* Receive the response */ |
| 1594 | hreq->state = READING_RESPONSE; |
| 1595 | hreq->tcp_state.current_read_size = 0; |
| 1596 | pj_assert(hreq->buffer.ptr); |
| 1597 | status = pj_activesock_start_read2(hreq->asock, hreq->pool, BUF_SIZE, |
| 1598 | (void**)&hreq->buffer.ptr, 0); |
| 1599 | if (status != PJ_SUCCESS) { |
| 1600 | /* Error reading */ |
| 1601 | http_req_end_request(hreq); |
| 1602 | return status; |
| 1603 | } |
| 1604 | |
| 1605 | return PJ_SUCCESS; |
| 1606 | } |
| 1607 | |
| 1608 | static pj_status_t http_req_end_request(pj_http_req *hreq) |
| 1609 | { |
| 1610 | if (hreq->asock) { |
| 1611 | pj_activesock_close(hreq->asock); |
| 1612 | hreq->asock = NULL; |
| 1613 | } |
| 1614 | |
| 1615 | /* Cancel query timeout timer. */ |
| 1616 | if (hreq->timer_entry.id != 0) { |
| 1617 | pj_timer_heap_cancel(hreq->timer, &hreq->timer_entry); |
| 1618 | /* Invalidate id. */ |
| 1619 | hreq->timer_entry.id = 0; |
| 1620 | } |
| 1621 | |
| 1622 | hreq->state = IDLE; |
| 1623 | |
| 1624 | return PJ_SUCCESS; |
| 1625 | } |
| 1626 | |
| 1627 | PJ_DEF(pj_status_t) pj_http_req_cancel(pj_http_req *http_req, |
| 1628 | pj_bool_t notify) |
| 1629 | { |
| 1630 | http_req->state = ABORTING; |
| 1631 | |
| 1632 | http_req_end_request(http_req); |
| 1633 | |
| 1634 | if (notify && http_req->cb.on_complete) { |
| 1635 | (*http_req->cb.on_complete)(http_req, (!http_req->error? |
| 1636 | PJ_ECANCELLED: http_req->error), NULL); |
| 1637 | } |
| 1638 | |
| 1639 | return PJ_SUCCESS; |
| 1640 | } |
| 1641 | |
| 1642 | |
| 1643 | PJ_DEF(pj_status_t) pj_http_req_destroy(pj_http_req *http_req) |
| 1644 | { |
| 1645 | PJ_ASSERT_RETURN(http_req, PJ_EINVAL); |
| 1646 | |
| 1647 | /* If there is any pending request, cancel it */ |
| 1648 | if (http_req->state != IDLE) { |
| 1649 | pj_http_req_cancel(http_req, PJ_FALSE); |
| 1650 | } |
| 1651 | |
| 1652 | pj_pool_release(http_req->pool); |
| 1653 | |
| 1654 | return PJ_SUCCESS; |
| 1655 | } |