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 #define http_message_header(m, h) _http_message_header_ex((m), (h), sizeof(h))
  98 #define http_message_header_ex _http_message_header_ex
  99 static inline zval *_http_message_header_ex(http_message *msg, char *key_str, size_t key_len)
 100 {
 101         zval **header;
 102         if (SUCCESS == zend_hash_find(&msg->hdrs, key_str, key_len, (void **) &header)) {
 103                 return *header;
 104         }
 105         return NULL;
 106 }
 107
 108 PHP_HTTP_API http_message *_http_message_init_ex(http_message *message, http_message_type type)
 109 {
 110         if (!message) {
 111                 message = ecalloc(1, sizeof(http_message));
 112         }
 113
 114         http_message_init_type(message, type);
 115         message->parent = NULL;
 116         phpstr_init(&message->body);
 117         zend_hash_init(&message->hdrs, 0, NULL, ZVAL_PTR_DTOR, 0);
 118
 119         return message;
 120 }
 121
 122
 123 PHP_HTTP_API void _http_message_set_type(http_message *message, http_message_type type)
 124 {
 125         /* just act if different */
 126         if (type != message->type) {
 127
 128                 /* free request info */
 129                 if (message->type == HTTP_MSG_REQUEST) {
 130                         if (message->info.request.method) {
 131                                 efree(message->info.request.method);
 132                         }
 133                         if (message->info.request.URI) {
 134                                 efree(message->info.request.URI);
 135                         }
 136                 }
 137
 138                 /* init */
 139                 http_message_init_type(message, type);
 140         }
 141 }
 142
 143 PHP_HTTP_API http_message *_http_message_parse_ex(http_message *msg, const char *message, size_t message_length TSRMLS_DC)
 144 {
 145         char *body = NULL;
 146         zend_bool free_msg = msg ? 0 : 1;
 147
 148         if (message_length < HTTP_MSG_MIN_SIZE) {
 149                 return NULL;
 150         }
 151
 152         if (!message) {
 153                 return NULL;
 154         }
 155
 156         msg = http_message_init(msg);
 157
 158         if (SUCCESS != http_parse_headers_cb(message, &msg->hdrs, 1, http_message_headers_cb, (void **) &msg)) {
 159                 if (free_msg) {
 160                         http_message_free(msg);
 161                 }
 162                 return NULL;
 163         }
 164
 165         /* header parsing stops at CRLF CRLF */
 166         if (body = strstr(message, HTTP_CRLF HTTP_CRLF)) {
 167                 zval *c;
 168                 const char *continue_at = NULL;
 169
 170                 body += lenof(HTTP_CRLF HTTP_CRLF);
 171
 172                 /* message has content-length header */
 173                 if (c = http_message_header(msg, "Content-Length")) {
 174                         long len = atol(Z_STRVAL_P(c));
 175                         phpstr_from_string_ex(PHPSTR(msg), body, len);
 176                         continue_at = body + len;
 177                 } else
 178
 179                 /* message has chunked transfer encoding */
 180                 if (c = http_message_header(msg, "Transfer-Encoding")) {
 181                         if (!strcasecmp("chunked", Z_STRVAL_P(c))) {
 182                                 char *decoded;
 183                                 size_t decoded_len;
 184
 185                                 /* decode and replace Transfer-Encoding with Content-Length header */
 186                                 if (continue_at = http_chunked_decode(body, message + message_length - body, &decoded, &decoded_len)) {
 187                                         phpstr_from_string_ex(PHPSTR(msg), decoded, decoded_len);
 188                                         efree(decoded);
 189                                         {
 190                                                 zval *len;
 191                                                 char *tmp;
 192
 193                                                 spprintf(&tmp, 0, "%lu", (ulong) decoded_len);
 194                                                 MAKE_STD_ZVAL(len);
 195                                                 ZVAL_STRING(len, tmp, 0);
 196
 197                                                 zend_hash_del(&msg->hdrs, "Transfer-Encoding", sizeof("Transfer-Encoding"));
 198                                                 zend_hash_add(&msg->hdrs, "Content-Length", sizeof("Content-Length"), (void *) &len, sizeof(zval *), NULL);
 199                                         }
 200                                 }
 201                         }
 202                 } else
 203
 204                 /* message has content-range header */
 205                 if (c = http_message_header(msg, "Content-Range")) {
 206                         ulong start = 0, end = 0;
 207
 208                         sscanf(Z_STRVAL_P(c), "bytes=%lu-%lu", &start, &end);
 209                         if (end > start) {
 210                                 phpstr_from_string_ex(PHPSTR(msg), body, (size_t) (end - start));
 211                                 continue_at = body + (end - start);
 212                         }
 213                 } else
 214
 215                 /* no headers that indicate content length */
 216                 if (HTTP_MSG_TYPE(RESPONSE, msg)) {
 217                         phpstr_from_string_ex(PHPSTR(msg), body, message + message_length - body);
 218                 } else {
 219                         continue_at = body;
 220                 }
 221
 222                 /* check for following messages */
 223                 if (continue_at) {
 224                         while (isspace(*continue_at)) ++continue_at;
 225                         if (continue_at < (message + message_length)) {
 226                                 http_message *next = NULL, *most = NULL;
 227
 228                                 /* set current message to parent of most parent following messages and return deepest */
 229                                 if (most = next = http_message_parse(continue_at, message + message_length - continue_at)) {
 230                                         while (most->parent) most = most->parent;
 231                                         most->parent = msg;
 232                                         msg = next;
 233                                 }
 234                         }
 235                 }
 236         }
 237
 238         return msg;
 239 }
 240
 241 PHP_HTTP_API void _http_message_tostring(http_message *msg, char **string, size_t *length)
 242 {
 243         phpstr str;
 244         char *key, *data;
 245         ulong idx;
 246         zval **header;
 247
 248         phpstr_init_ex(&str, 4096, 0);
 249
 250         switch (msg->type)
 251         {
 252                 case HTTP_MSG_REQUEST:
 253                         phpstr_appendf(&str, "%s %s HTTP/%1.1f" HTTP_CRLF,
 254                                 msg->info.request.method,
 255                                 msg->info.request.URI,
 256                                 msg->info.request.http_version);
 257                 break;
 258
 259                 case HTTP_MSG_RESPONSE:
 260                         phpstr_appendf(&str, "HTTP/%1.1f %d" HTTP_CRLF,
 261                                 msg->info.response.http_version,
 262                                 msg->info.response.code);
 263                 break;
 264
 265                 case HTTP_MSG_NONE:
 266                 default:
 267                 break;
 268         }
 269
 270         FOREACH_HASH_KEYVAL(&msg->hdrs, key, idx, header) {
 271                 if (key) {
 272                         zval **single_header;
 273
 274                         switch (Z_TYPE_PP(header))
 275                         {
 276                                 case IS_STRING:
 277                                         phpstr_appendf(&str, "%s: %s" HTTP_CRLF, key, Z_STRVAL_PP(header));
 278                                 break;
 279
 280                                 case IS_ARRAY:
 281                                         FOREACH_VAL(*header, single_header) {
 282                                                 phpstr_appendf(&str, "%s: %s" HTTP_CRLF, key, Z_STRVAL_PP(single_header));
 283                                         }
 284                                 break;
 285                         }
 286
 287                         key = NULL;
 288                 }
 289         }
 290
 291         if (PHPSTR_LEN(msg)) {
 292                 phpstr_appends(&str, HTTP_CRLF);
 293                 phpstr_append(&str, PHPSTR_VAL(msg), PHPSTR_LEN(msg));
 294                 phpstr_appends(&str, HTTP_CRLF);
 295         }
 296
 297         data = phpstr_data(&str, string, length);
 298         if (!string) {
 299                 efree(data);
 300         }
 301
 302         phpstr_dtor(&str);
 303 }
 304
 305 PHP_HTTP_API void _http_message_serialize(http_message *message, char **string, size_t *length)
 306 {
 307         char *buf;
 308         size_t len;
 309         phpstr str;
 310
 311         phpstr_init(&str);
 312
 313         do {
 314                 http_message_tostring(message, &buf, &len);
 315                 phpstr_prepend(&str, buf, len);
 316                 efree(buf);
 317         } while (message = message->parent);
 318
 319         buf = phpstr_data(&str, string, length);
 320         if (!string) {
 321                 efree(buf);
 322         }
 323
 324         phpstr_dtor(&str);
 325 }
 326
 327 PHP_HTTP_API STATUS _http_message_send(http_message *message TSRMLS_DC)
 328 {
 329         STATUS rs = FAILURE;
 330
 331         switch (message->type)
 332         {
 333                 case HTTP_MSG_RESPONSE:
 334                 {
 335                         char *key;
 336                         ulong idx;
 337                         zval **val;
 338
 339                         FOREACH_HASH_KEYVAL(&message->hdrs, key, idx, val) {
 340                                 if (key) {
 341                                         char *header;
 342                                         spprintf(&header, 0, "%s: %s", key, Z_STRVAL_PP(val));
 343                                         http_send_header(header);
 344                                         efree(header);
 345                                         key = NULL;
 346                                 }
 347                         }
 348                         rs =    SUCCESS == http_send_status(message->info.response.code) &&
 349                                         SUCCESS == http_send_data(PHPSTR_VAL(message), PHPSTR_LEN(message)) ?
 350                                         SUCCESS : FAILURE;
 351                 }
 352                 break;
 353
 354                 case HTTP_MSG_REQUEST:
 355                 {
 356 #ifdef HTTP_HAVE_CURL
 357                         char *uri = NULL;
 358                         zval **zhost, options, headers;
 359
 360                         array_init(&options);
 361                         array_init(&headers);
 362                         zend_hash_copy(Z_ARRVAL(headers), &message->hdrs, (copy_ctor_func_t) zval_add_ref, NULL, sizeof(zval *));
 363                         add_assoc_zval(&options, "headers", &headers);
 364
 365                         /* check host header */
 366                         if (SUCCESS == zend_hash_find(&message->hdrs, "Host", sizeof("Host"), (void **) &zhost)) {
 367                                 char *colon = NULL, *host = NULL;
 368                                 size_t host_len = 0;
 369                                 int port = 0;
 370
 371                                 /* check for port */
 372                                 if (colon = strchr(Z_STRVAL_PP(zhost), ':')) {
 373                                         port = atoi(colon + 1);
 374                                         host = estrndup(Z_STRVAL_PP(zhost), host_len = (Z_STRVAL_PP(zhost) - colon - 1));
 375                                 } else {
 376                                         host = estrndup(Z_STRVAL_PP(zhost), host_len = Z_STRLEN_PP(zhost));
 377                                 }
 378                                 uri = http_absolute_uri_ex(
 379                                         message->info.request.URI, strlen(message->info.request.URI),
 380                                         NULL, 0, host, host_len, port);
 381                                 efree(host);
 382                         } else {
 383                                 uri = http_absolute_uri(message->info.request.URI);
 384                         }
 385
 386                         if (!strcasecmp("POST", message->info.request.method)) {
 387                                 http_request_body body = {HTTP_REQUEST_BODY_CSTRING, PHPSTR_VAL(message), PHPSTR_LEN(message)};
 388                                 rs = http_post(uri, &body, Z_ARRVAL(options), NULL, NULL);
 389                         } else
 390                         if (!strcasecmp("GET", message->info.request.method)) {
 391                                 rs = http_get(uri, Z_ARRVAL(options), NULL, NULL);
 392                         } else
 393                         if (!strcasecmp("HEAD", message->info.request.method)) {
 394                                 rs = http_head(uri, Z_ARRVAL(options), NULL, NULL);
 395                         } else {
 396                                 http_error_ex(E_WARNING, HTTP_E_MSG,
 397                                         "Cannot send HttpMessage. Request method %s not supported",
 398                                         message->info.request.method);
 399                         }
 400
 401                         efree(uri);
 402 #else
 403                         http_error(E_WARNING, HTTP_E_MSG, "HTTP requests not supported - ext/http was not linked against libcurl.");
 404 #endif
 405                 }
 406                 break;
 407
 408                 case HTTP_MSG_NONE:
 409                 default:
 410                         http_error(E_WARNING, HTTP_E_MSG, "HttpMessage is neither of type HTTP_MSG_REQUEST nor HTTP_MSG_RESPONSE");
 411                 break;
 412         }
 413
 414         return rs;
 415 }
 416
 417 PHP_HTTP_API http_message *_http_message_dup(http_message *msg TSRMLS_DC)
 418 {
 419         /*
 420          * TODO: unroll
 421          */
 422         http_message *new;
 423         char *serialized_data;
 424         size_t serialized_length;
 425
 426         http_message_serialize(msg, &serialized_data, &serialized_length);
 427         new = http_message_parse(serialized_data, serialized_length);
 428         efree(serialized_data);
 429         return new;
 430 }
 431
 432 PHP_HTTP_API void _http_message_dtor(http_message *message)
 433 {
 434         if (message) {
 435                 zend_hash_destroy(&message->hdrs);
 436                 phpstr_dtor(PHPSTR(message));
 437                 if (HTTP_MSG_TYPE(REQUEST, message)) {
 438                         if (message->info.request.method) {
 439                                 efree(message->info.request.method);
 440                                 message->info.request.method = NULL;
 441                         }
 442                         if (message->info.request.URI) {
 443                                 efree(message->info.request.URI);
 444                                 message->info.request.URI = NULL;
 445                         }
 446                 }
 447         }
 448 }
 449
 450 PHP_HTTP_API void _http_message_free(http_message *message)
 451 {
 452         if (message) {
 453                 if (message->parent) {
 454                         http_message_free(message->parent);
 455                         message->parent = NULL;
 456                 }
 457                 http_message_dtor(message);
 458                 efree(message);
 459         }
 460 }
 461
 462 /*
 463  * Local variables:
 464  * tab-width: 4
 465  * c-basic-offset: 4
 466  * End:
 467  * vim600: noet sw=4 ts=4 fdm=marker
 468  * vim<600: noet sw=4 ts=4
 469  */