git.m6w6.name Git - m6w6/ext-http/blob - http_message_api.c

   1 /*
   2    +----------------------------------------------------------------------+
   3    | PECL :: http                                                         |
   4    +----------------------------------------------------------------------+
   5    | This source file is subject to version 3.0 of the PHP license, that  |
   6    | is bundled with this package in the file LICENSE, and is available   |
   7    | through the world-wide-web at http://www.php.net/license/3_0.txt.    |
   8    | If you did not receive a copy of the PHP license and are unable to   |
   9    | obtain it through the world-wide-web, please send a note to          |
  10    | license@php.net so we can mail you a copy immediately.               |
  11    +----------------------------------------------------------------------+
  12    | Copyright (c) 2004-2005 Michael Wallner <mike@php.net>               |
  13    +----------------------------------------------------------------------+
  14 */
  15
  16 /* $Id$ */
  17
  18 #ifdef HAVE_CONFIG_H
  19 #       include "config.h"
  20 #endif
  21 #include "php.h"
  22
  23 #include "php_http.h"
  24 #include "php_http_std_defs.h"
  25 #include "php_http_api.h"
  26 #include "php_http_message_api.h"
  27 #include "php_http_headers_api.h"
  28 #include "php_http_send_api.h"
  29 #include "php_http_request_api.h"
  30 #include "php_http_url_api.h"
  31
  32 #include "phpstr/phpstr.h"
  33
  34 #define http_message_headers_cb _http_message_headers_cb
  35 static void _http_message_headers_cb(const char *http_line, HashTable **headers, void **message TSRMLS_DC)
  36 {
  37         size_t line_length;
  38         char *crlf = NULL;
  39         http_message *new, *old = (http_message *) *message;
  40
  41         if (crlf = strstr(http_line, HTTP_CRLF)) {
  42                 line_length = crlf - http_line;
  43         } else {
  44                 line_length = strlen(http_line);
  45         }
  46
  47         if (old->type || zend_hash_num_elements(&old->hdrs) || PHPSTR_LEN(old)) {
  48                 new = http_message_new();
  49
  50                 new->parent = old;
  51                 *message = new;
  52                 *headers = &new->hdrs;
  53         } else {
  54                 new = old;
  55         }
  56
  57         while (isspace(http_line[line_length-1])) --line_length;
  58
  59         // response
  60         if (!strncmp(http_line, "HTTP/1.", lenof("HTTP/1."))) {
  61                 new->type = HTTP_MSG_RESPONSE;
  62                 new->info.response.http_version = atof(http_line + lenof("HTTP/"));
  63                 new->info.response.code = atoi(http_line + lenof("HTTP/1.1 "));
  64         } else
  65         // request
  66         if (!strncmp(http_line + line_length - lenof("HTTP/1.1"), "HTTP/1.", lenof("HTTP/1."))) {
  67                 const char *method_sep_uri = strchr(http_line, ' ');
  68                 new->type = HTTP_MSG_REQUEST;
  69                 new->info.request.http_version = atof(http_line + line_length - lenof("1.1"));
  70                 new->info.request.method = estrndup(http_line, method_sep_uri - http_line);
  71                 new->info.request.URI = estrndup(method_sep_uri + 1, http_line + line_length - method_sep_uri - 1 - lenof(" HTTP/1.1"));
  72         }
  73 }
  74
  75 #define http_message_init_type _http_message_init_type
  76 static inline void _http_message_init_type(http_message *message, http_message_type type)
  77 {
  78         switch (message->type = type)
  79         {
  80                 case HTTP_MSG_RESPONSE:
  81                         message->info.response.http_version = .0;
  82                         message->info.response.code = 0;
  83                 break;
  84
  85                 case HTTP_MSG_REQUEST:
  86                         message->info.request.http_version = .0;
  87                         message->info.request.method = NULL;
  88                         message->info.request.URI = NULL;
  89                 break;
  90
  91                 case HTTP_MSG_NONE:
  92                 default:
  93                 break;
  94         }
  95 }
  96
  97 PHP_HTTP_API http_message *_http_message_init_ex(http_message *message, http_message_type type)
  98 {
  99         if (!message) {
 100                 message = ecalloc(1, sizeof(http_message));
 101         }
 102
 103         http_message_init_type(message, type);
 104         message->parent = NULL;
 105         phpstr_init(&message->body);
 106         zend_hash_init(&message->hdrs, 0, NULL, ZVAL_PTR_DTOR, 0);
 107
 108         return message;
 109 }
 110
 111
 112 PHP_HTTP_API void _http_message_set_type(http_message *message, http_message_type type)
 113 {
 114         /* just act if different */
 115         if (type != message->type) {
 116
 117                 /* free request info */
 118                 if (message->type == HTTP_MSG_REQUEST) {
 119                         if (message->info.request.method) {
 120                                 efree(message->info.request.method);
 121                         }
 122                         if (message->info.request.URI) {
 123                                 efree(message->info.request.URI);
 124                         }
 125                 }
 126
 127                 /* init */
 128                 http_message_init_type(message, type);
 129         }
 130 }
 131
 132 PHP_HTTP_API http_message *_http_message_parse_ex(http_message *msg, const char *message, size_t message_length TSRMLS_DC)
 133 {
 134         char *body = NULL;
 135         zend_bool free_msg = msg ? 0 : 1;
 136
 137         if (message_length < HTTP_MSG_MIN_SIZE) {
 138                 return NULL;
 139         }
 140
 141         if (!message) {
 142                 return NULL;
 143         }
 144
 145         msg = http_message_init(msg);
 146
 147         if (SUCCESS != http_parse_headers_cb(message, &msg->hdrs, 1, http_message_headers_cb, (void **) &msg)) {
 148                 if (free_msg) {
 149                         http_message_free(msg);
 150                 }
 151                 return NULL;
 152         }
 153
 154         /* header parsing stops at CRLF CRLF */
 155         if (body = strstr(message, HTTP_CRLF HTTP_CRLF)) {
 156                 zval *c;
 157                 const char *continue_at = NULL;
 158
 159                 body += lenof(HTTP_CRLF HTTP_CRLF);
 160
 161                 /* message has content-length header */
 162                 if (c = http_message_header(msg, "Content-Length")) {
 163                         long len = atol(Z_STRVAL_P(c));
 164                         phpstr_from_string_ex(PHPSTR(msg), body, len);
 165                         continue_at = body + len;
 166                 } else
 167
 168                 /* message has chunked transfer encoding */
 169                 if (c = http_message_header(msg, "Transfer-Encoding")) {
 170                         if (!strcasecmp("chunked", Z_STRVAL_P(c))) {
 171                                 char *decoded;
 172                                 size_t decoded_len;
 173
 174                                 /* decode and replace Transfer-Encoding with Content-Length header */
 175                                 if (continue_at = http_chunked_decode(body, message + message_length - body, &decoded, &decoded_len)) {
 176                                         phpstr_from_string_ex(PHPSTR(msg), decoded, decoded_len);
 177                                         efree(decoded);
 178                                         {
 179                                                 zval *len;
 180                                                 char *tmp;
 181
 182                                                 spprintf(&tmp, 0, "%lu", (ulong) decoded_len);
 183                                                 MAKE_STD_ZVAL(len);
 184                                                 ZVAL_STRING(len, tmp, 0);
 185
 186                                                 zend_hash_del(&msg->hdrs, "Transfer-Encoding", sizeof("Transfer-Encoding"));
 187                                                 zend_hash_add(&msg->hdrs, "Content-Length", sizeof("Content-Length"), (void *) &len, sizeof(zval *), NULL);
 188                                         }
 189                                 }
 190                         }
 191                 } else
 192
 193                 /* message has content-range header */
 194                 if (c = http_message_header(msg, "Content-Range")) {
 195                         ulong start = 0, end = 0;
 196
 197                         sscanf(Z_STRVAL_P(c), "bytes=%lu-%lu", &start, &end);
 198                         if (end > start) {
 199                                 phpstr_from_string_ex(PHPSTR(msg), body, (size_t) (end - start));
 200                                 continue_at = body + (end - start);
 201                         }
 202                 } else
 203
 204                 /* no headers that indicate content length */
 205                 if (HTTP_MSG_TYPE(RESPONSE, msg)) {
 206                         phpstr_from_string_ex(PHPSTR(msg), body, message + message_length - body);
 207                 } else {
 208                         continue_at = body;
 209                 }
 210
 211                 /* check for following messages */
 212                 if (continue_at) {
 213                         while (isspace(*continue_at)) ++continue_at;
 214                         if (continue_at < (message + message_length)) {
 215                                 http_message *next = NULL, *most = NULL;
 216
 217                                 /* set current message to parent of most parent following messages and return deepest */
 218                                 if (most = next = http_message_parse(continue_at, message + message_length - continue_at)) {
 219                                         while (most->parent) most = most->parent;
 220                                         most->parent = msg;
 221                                         msg = next;
 222                                 }
 223                         }
 224                 }
 225         }
 226
 227         return msg;
 228 }
 229
 230 PHP_HTTP_API void _http_message_tostring(http_message *msg, char **string, size_t *length)
 231 {
 232         phpstr str;
 233         char *key, *data;
 234         ulong idx;
 235         zval **header;
 236
 237         phpstr_init_ex(&str, 4096, 0);
 238
 239         switch (msg->type)
 240         {
 241                 case HTTP_MSG_REQUEST:
 242                         phpstr_appendf(&str, "%s %s HTTP/%1.1f" HTTP_CRLF,
 243                                 msg->info.request.method,
 244                                 msg->info.request.URI,
 245                                 msg->info.request.http_version);
 246                 break;
 247
 248                 case HTTP_MSG_RESPONSE:
 249                         phpstr_appendf(&str, "HTTP/%1.1f %d" HTTP_CRLF,
 250                                 msg->info.response.http_version,
 251                                 msg->info.response.code);
 252                 break;
 253
 254                 case HTTP_MSG_NONE:
 255                 default:
 256                 break;
 257         }
 258
 259         FOREACH_HASH_KEYVAL(&msg->hdrs, key, idx, header) {
 260                 if (key) {
 261                         zval **single_header;
 262
 263                         switch (Z_TYPE_PP(header))
 264                         {
 265                                 case IS_STRING:
 266                                         phpstr_appendf(&str, "%s: %s" HTTP_CRLF, key, Z_STRVAL_PP(header));
 267                                 break;
 268
 269                                 case IS_ARRAY:
 270                                         FOREACH_VAL(*header, single_header) {
 271                                                 phpstr_appendf(&str, "%s: %s" HTTP_CRLF, key, Z_STRVAL_PP(single_header));
 272                                         }
 273                                 break;
 274                         }
 275
 276                         key = NULL;
 277                 }
 278         }
 279
 280         if (PHPSTR_LEN(msg)) {
 281                 phpstr_appends(&str, HTTP_CRLF);
 282                 phpstr_append(&str, PHPSTR_VAL(msg), PHPSTR_LEN(msg));
 283                 phpstr_appends(&str, HTTP_CRLF);
 284         }
 285
 286         data = phpstr_data(&str, string, length);
 287         if (!string) {
 288                 efree(data);
 289         }
 290
 291         phpstr_dtor(&str);
 292 }
 293
 294 PHP_HTTP_API void _http_message_serialize(http_message *message, char **string, size_t *length)
 295 {
 296         char *buf;
 297         size_t len;
 298         phpstr str;
 299
 300         phpstr_init(&str);
 301
 302         do {
 303                 http_message_tostring(message, &buf, &len);
 304                 phpstr_prepend(&str, buf, len);
 305                 efree(buf);
 306         } while (message = message->parent);
 307
 308         buf = phpstr_data(&str, string, length);
 309         if (!string) {
 310                 efree(buf);
 311         }
 312
 313         phpstr_dtor(&str);
 314 }
 315
 316 PHP_HTTP_API STATUS _http_message_send(http_message *message TSRMLS_DC)
 317 {
 318         STATUS rs = FAILURE;
 319
 320         switch (message->type)
 321         {
 322                 case HTTP_MSG_RESPONSE:
 323                 {
 324                         char *key;
 325                         ulong idx;
 326                         zval **val;
 327
 328                         FOREACH_HASH_KEYVAL(&message->hdrs, key, idx, val) {
 329                                 if (key) {
 330                                         char *header;
 331                                         spprintf(&header, 0, "%s: %s", key, Z_STRVAL_PP(val));
 332                                         http_send_header(header);
 333                                         efree(header);
 334                                         key = NULL;
 335                                 }
 336                         }
 337                         rs =    SUCCESS == http_send_status(message->info.response.code) &&
 338                                         SUCCESS == http_send_data(PHPSTR_VAL(message), PHPSTR_LEN(message)) ?
 339                                         SUCCESS : FAILURE;
 340                 }
 341                 break;
 342
 343                 case HTTP_MSG_REQUEST:
 344                 {
 345 #ifdef HTTP_HAVE_CURL
 346                         char *uri = NULL;
 347                         zval **zhost, options, headers;
 348
 349                         array_init(&options);
 350                         array_init(&headers);
 351                         zend_hash_copy(Z_ARRVAL(headers), &message->hdrs, (copy_ctor_func_t) zval_add_ref, NULL, sizeof(zval *));
 352                         add_assoc_zval(&options, "headers", &headers);
 353
 354                         /* check host header */
 355                         if (SUCCESS == zend_hash_find(&message->hdrs, "Host", sizeof("Host"), (void **) &zhost)) {
 356                                 char *colon = NULL, *host = NULL;
 357                                 size_t host_len = 0;
 358                                 int port = 0;
 359
 360                                 /* check for port */
 361                                 if (colon = strchr(Z_STRVAL_PP(zhost), ':')) {
 362                                         port = atoi(colon + 1);
 363                                         host = estrndup(Z_STRVAL_PP(zhost), host_len = (Z_STRVAL_PP(zhost) - colon - 1));
 364                                 } else {
 365                                         host = estrndup(Z_STRVAL_PP(zhost), host_len = Z_STRLEN_PP(zhost));
 366                                 }
 367                                 uri = http_absolute_uri_ex(
 368                                         message->info.request.URI, strlen(message->info.request.URI),
 369                                         NULL, 0, host, host_len, port);
 370                                 efree(host);
 371                         } else {
 372                                 uri = http_absolute_uri(message->info.request.URI);
 373                         }
 374
 375                         if (!strcasecmp("POST", message->info.request.method)) {
 376                                 http_request_body body = {HTTP_REQUEST_BODY_CSTRING, PHPSTR_VAL(message), PHPSTR_LEN(message)};
 377                                 rs = http_post(uri, &body, Z_ARRVAL(options), NULL, NULL);
 378                         } else
 379                         if (!strcasecmp("GET", message->info.request.method)) {
 380                                 rs = http_get(uri, Z_ARRVAL(options), NULL, NULL);
 381                         } else
 382                         if (!strcasecmp("HEAD", message->info.request.method)) {
 383                                 rs = http_head(uri, Z_ARRVAL(options), NULL, NULL);
 384                         } else {
 385                                 http_error_ex(E_WARNING, HTTP_E_MSG,
 386                                         "Cannot send HttpMessage. Request method %s not supported",
 387                                         message->info.request.method);
 388                         }
 389
 390                         efree(uri);
 391 #else
 392                         http_error(E_WARNING, HTTP_E_MSG, "HTTP requests not supported - ext/http was not linked against libcurl.");
 393 #endif
 394                 }
 395                 break;
 396
 397                 case HTTP_MSG_NONE:
 398                 default:
 399                         http_error(E_WARNING, HTTP_E_MSG, "HttpMessage is neither of type HTTP_MSG_REQUEST nor HTTP_MSG_RESPONSE");
 400                 break;
 401         }
 402
 403         return rs;
 404 }
 405
 406 PHP_HTTP_API http_message *_http_message_dup(http_message *msg TSRMLS_DC)
 407 {
 408         /*
 409          * TODO: unroll
 410          */
 411         http_message *new;
 412         char *serialized_data;
 413         size_t serialized_length;
 414
 415         http_message_serialize(msg, &serialized_data, &serialized_length);
 416         new = http_message_parse(serialized_data, serialized_length);
 417         efree(serialized_data);
 418         return new;
 419 }
 420
 421 PHP_HTTP_API void _http_message_dtor(http_message *message)
 422 {
 423         if (message) {
 424                 zend_hash_destroy(&message->hdrs);
 425                 phpstr_dtor(PHPSTR(message));
 426                 if (HTTP_MSG_TYPE(REQUEST, message)) {
 427                         if (message->info.request.method) {
 428                                 efree(message->info.request.method);
 429                                 message->info.request.method = NULL;
 430                         }
 431                         if (message->info.request.URI) {
 432                                 efree(message->info.request.URI);
 433                                 message->info.request.URI = NULL;
 434                         }
 435                 }
 436         }
 437 }
 438
 439 PHP_HTTP_API void _http_message_free(http_message *message)
 440 {
 441         if (message) {
 442                 if (message->parent) {
 443                         http_message_free(message->parent);
 444                         message->parent = NULL;
 445                 }
 446                 http_message_dtor(message);
 447                 efree(message);
 448         }
 449 }
 450
 451 /*
 452  * Local variables:
 453  * tab-width: 4
 454  * c-basic-offset: 4
 455  * End:
 456  * vim600: noet sw=4 ts=4 fdm=marker
 457  * vim<600: noet sw=4 ts=4
 458  */