git.m6w6.name Git - m6w6/ext-http/blob - http_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 "SAPI.h"
  24 #include "ext/standard/url.h"
  25
  26 #include "php_http.h"
  27 #include "php_http_std_defs.h"
  28 #include "php_http_api.h"
  29 #include "php_http_headers_api.h"
  30 #include "php_http_send_api.h"
  31
  32 #ifdef ZEND_ENGINE_2
  33 #       include "zend_exceptions.h"
  34 #       include "php_http_exception_object.h"
  35 #endif
  36
  37 #include <ctype.h>
  38
  39 #ifdef HTTP_HAVE_MAGIC
  40 #       if defined(PHP_WIN32) && !defined(USE_MAGIC_DLL) && !defined(USE_MAGIC_STATIC)
  41 #               define USE_MAGIC_STATIC
  42 #       endif
  43 #       include <magic.h>
  44 #endif
  45
  46 ZEND_EXTERN_MODULE_GLOBALS(http);
  47
  48 /* char *pretty_key(char *, size_t, zend_bool, zend_bool) */
  49 char *_http_pretty_key(char *key, size_t key_len, zend_bool uctitle, zend_bool xhyphen)
  50 {
  51         if (key && key_len) {
  52                 size_t i;
  53                 int wasalpha;
  54                 if (wasalpha = isalpha((int) key[0])) {
  55                         key[0] = (char) (uctitle ? toupper((int) key[0]) : tolower((int) key[0]));
  56                 }
  57                 for (i = 1; i < key_len; i++) {
  58                         if (isalpha((int) key[i])) {
  59                                 key[i] = (char) (((!wasalpha) && uctitle) ? toupper((int) key[i]) : tolower((int) key[i]));
  60                                 wasalpha = 1;
  61                         } else {
  62                                 if (xhyphen && (key[i] == '_')) {
  63                                         key[i] = '-';
  64                                 }
  65                                 wasalpha = 0;
  66                         }
  67                 }
  68         }
  69         return key;
  70 }
  71 /* }}} */
  72
  73 /* {{{ */
  74 void _http_key_list_default_decoder(const char *encoded, size_t encoded_len, char **decoded, size_t *decoded_len TSRMLS_DC)
  75 {
  76         *decoded = estrndup(encoded, encoded_len);
  77         *decoded_len = (size_t) php_url_decode(*decoded, encoded_len);
  78 }
  79 /* }}} */
  80
  81 /* {{{ */
  82 STATUS _http_parse_key_list(const char *list, HashTable *items, char separator, http_key_list_decode_t decode, zend_bool first_entry_is_name_value_pair TSRMLS_DC)
  83 {
  84         const char *key = list, *val = NULL;
  85         int vallen = 0, keylen = 0, done = 0;
  86         zval array;
  87
  88         INIT_ZARR(array, items);
  89
  90         if (!(val = strchr(list, '='))) {
  91                 return FAILURE;
  92         }
  93
  94 #define HTTP_KEYLIST_VAL(array, k, str, len) \
  95         { \
  96                 char *decoded; \
  97                 size_t decoded_len; \
  98                 if (decode) { \
  99                         decode(str, len, &decoded, &decoded_len TSRMLS_CC); \
 100                 } else { \
 101                         decoded_len = len; \
 102                         decoded = estrndup(str, decoded_len); \
 103                 } \
 104                 add_assoc_stringl(array, k, decoded, decoded_len, 0); \
 105         }
 106 #define HTTP_KEYLIST_FIXKEY() \
 107         { \
 108                         while (isspace(*key)) ++key; \
 109                         keylen = val - key; \
 110                         while (isspace(key[keylen - 1])) --keylen; \
 111         }
 112 #define HTTP_KEYLIST_FIXVAL() \
 113         { \
 114                         ++val; \
 115                         while (isspace(*val)) ++val; \
 116                         vallen = key - val; \
 117                         while (isspace(val[vallen - 1])) --vallen; \
 118         }
 119
 120         HTTP_KEYLIST_FIXKEY();
 121
 122         if (first_entry_is_name_value_pair) {
 123                 HTTP_KEYLIST_VAL(&array, "name", key, keylen);
 124
 125                 /* just one name=value */
 126                 if (!(key = strchr(val, separator))) {
 127                         key = val + strlen(val);
 128                         HTTP_KEYLIST_FIXVAL();
 129                         HTTP_KEYLIST_VAL(&array, "value", val, vallen);
 130                         return SUCCESS;
 131                 }
 132                 /* additional info appended */
 133                 else {
 134                         HTTP_KEYLIST_FIXVAL();
 135                         HTTP_KEYLIST_VAL(&array, "value", val, vallen);
 136                 }
 137         }
 138
 139         do {
 140                 char *keydup = NULL;
 141
 142                 if (!(val = strchr(key, '='))) {
 143                         break;
 144                 }
 145
 146                 /* start at 0 if first_entry_is_name_value_pair==0 */
 147                 if (zend_hash_num_elements(items)) {
 148                         ++key;
 149                 }
 150
 151                 HTTP_KEYLIST_FIXKEY();
 152                 keydup = estrndup(key, keylen);
 153                 if (!(key = strchr(val, separator))) {
 154                         done = 1;
 155                         key = val + strlen(val);
 156                 }
 157                 HTTP_KEYLIST_FIXVAL();
 158                 HTTP_KEYLIST_VAL(&array, keydup, val, vallen);
 159                 efree(keydup);
 160         } while (!done);
 161
 162         return SUCCESS;
 163 }
 164 /* }}} */
 165
 166 /* {{{ void http_error(long, long, char*) */
 167 void _http_error_ex(long type TSRMLS_DC, long code, const char *format, ...)
 168 {
 169         va_list args;
 170
 171         va_start(args, format);
 172 #ifdef ZEND_ENGINE_2
 173         if ((type == E_THROW) || (PG(error_handling) == EH_THROW)) {
 174                 char *message;
 175
 176                 vspprintf(&message, 0, format, args);
 177                 zend_throw_exception(http_exception_get_for_code(code), message, code TSRMLS_CC);
 178         } else
 179 #endif
 180         php_verror(NULL, "", type, format, args TSRMLS_CC);
 181         va_end(args);
 182 }
 183 /* }}} */
 184
 185 /* {{{ void http_log(char *, char *, char *) */
 186 void _http_log_ex(char *file, const char *ident, const char *message TSRMLS_DC)
 187 {
 188         time_t now;
 189         struct tm nowtm;
 190         char datetime[128];
 191
 192         time(&now);
 193         strftime(datetime, sizeof(datetime), "%Y-%m-%d %H:%M:%S", php_localtime_r(&now, &nowtm));
 194
 195 #define HTTP_LOG_WRITE(file, type, msg) \
 196         if (file && strlen(file)) { \
 197                 php_stream *log = php_stream_open_wrapper(file, "ab", REPORT_ERRORS|ENFORCE_SAFE_MODE, NULL); \
 198                  \
 199                 if (log) { \
 200                         php_stream_printf(log TSRMLS_CC, "%s\t[%s]\t%s\t<%s>%s", datetime, type, msg, SG(request_info).request_uri, PHP_EOL); \
 201                         php_stream_close(log); \
 202                 } \
 203          \
 204         }
 205
 206         HTTP_LOG_WRITE(file, ident, message);
 207         HTTP_LOG_WRITE(HTTP_G(log).composite, ident, message);
 208 }
 209 /* }}} */
 210
 211 /* {{{ STATUS http_exit(int, char*, char*) */
 212 STATUS _http_exit_ex(int status, char *header, char *body, zend_bool send_header TSRMLS_DC)
 213 {
 214         if (status || send_header) {
 215                 if (SUCCESS != http_send_status_header(status, send_header ? header : NULL)) {
 216                         http_error_ex(HE_WARNING, HTTP_E_HEADER, "Failed to exit with status/header: %d - %s", status, header ? header : "");
 217                         STR_FREE(header);
 218                         STR_FREE(body);
 219                         return FAILURE;
 220                 }
 221         }
 222
 223         if (body) {
 224                 PHPWRITE(body, strlen(body));
 225         }
 226
 227         switch (status)
 228         {
 229                 case 301:       http_log(HTTP_G(log).redirect, "301-REDIRECT", header);                 break;
 230                 case 302:       http_log(HTTP_G(log).redirect, "302-REDIRECT", header);                 break;
 231                 case 304:       http_log(HTTP_G(log).cache, "304-CACHE", header);                               break;
 232                 case 405:       http_log(HTTP_G(log).allowed_methods, "405-ALLOWED", header);   break;
 233                 default:        http_log(NULL, header, body);                                                                   break;
 234         }
 235
 236         STR_FREE(header);
 237         STR_FREE(body);
 238
 239         zend_bailout();
 240         /* fake */
 241         return SUCCESS;
 242 }
 243 /* }}} */
 244
 245 /* {{{ STATUS http_check_method(char *) */
 246 STATUS _http_check_method_ex(const char *method, const char *methods)
 247 {
 248         const char *found;
 249
 250         if (    (found = strstr(methods, method)) &&
 251                         (found == method || !isalpha(found[-1])) &&
 252                         (!isalpha(found[strlen(method) + 1]))) {
 253                 return SUCCESS;
 254         }
 255         return FAILURE;
 256 }
 257 /* }}} */
 258
 259 /* {{{ zval *http_get_server_var_ex(char *, size_t) */
 260 PHP_HTTP_API zval *_http_get_server_var_ex(const char *key, size_t key_size, zend_bool check TSRMLS_DC)
 261 {
 262         zval **hsv;
 263         zval **var;
 264
 265         if (SUCCESS != zend_hash_find(&EG(symbol_table), "_SERVER", sizeof("_SERVER"), (void **) &hsv)) {
 266                 return NULL;
 267         }
 268         if (SUCCESS != zend_hash_find(Z_ARRVAL_PP(hsv), (char *) key, key_size, (void **) &var)) {
 269                 return NULL;
 270         }
 271         if (check && !(Z_STRVAL_PP(var) && Z_STRLEN_PP(var))) {
 272                 return NULL;
 273         }
 274         return *var;
 275 }
 276 /* }}} */
 277
 278 /* {{{ STATUS http_get_request_body(char **, size_t *) */
 279 PHP_HTTP_API STATUS _http_get_request_body_ex(char **body, size_t *length, zend_bool dup TSRMLS_DC)
 280 {
 281         *length = 0;
 282         *body = NULL;
 283
 284         if (SG(request_info).raw_post_data) {
 285                 *length = SG(request_info).raw_post_data_length;
 286                 *body = (char *) (dup ? estrndup(SG(request_info).raw_post_data, *length) : SG(request_info).raw_post_data);
 287                 return SUCCESS;
 288         }
 289         return FAILURE;
 290 }
 291 /* }}} */
 292
 293 /* {{{ char *http_chunked_decode(char *, size_t, char **, size_t *) */
 294 PHP_HTTP_API const char *_http_chunked_decode(const char *encoded, size_t encoded_len, char **decoded, size_t *decoded_len TSRMLS_DC)
 295 {
 296         const char *e_ptr;
 297         char *d_ptr;
 298
 299         *decoded_len = 0;
 300         *decoded = ecalloc(1, encoded_len);
 301         d_ptr = *decoded;
 302         e_ptr = encoded;
 303
 304         while (((e_ptr - encoded) - encoded_len) > 0) {
 305                 size_t chunk_len = 0, EOL_len = 0;
 306                 int eol_mismatch = 0;
 307                 char *n_ptr;
 308
 309                 chunk_len = strtol(e_ptr, &n_ptr, 16);
 310
 311                 /* check if:
 312                  * - we could not read in chunk size
 313                  * - chunk size is not followed by (CR)LF|NUL
 314                  */
 315                 if ((n_ptr == e_ptr) || (*n_ptr && (eol_mismatch = n_ptr != http_locate_eol(e_ptr, &EOL_len)))) {
 316                         /* don't fail on apperently not encoded data */
 317                         if (e_ptr == encoded) {
 318                                 memcpy(*decoded, encoded, encoded_len);
 319                                 *decoded_len = encoded_len;
 320                                 return encoded + encoded_len;
 321                         } else {
 322                                 efree(*decoded);
 323                                 if (eol_mismatch) {
 324                                         if (EOL_len == 2) {
 325                                                 http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Invalid character (expected 0x0D 0x0A; got: 0x%X 0x%X)", *n_ptr, *(n_ptr + 1));
 326                                         } else {
 327                                                 http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Invalid character (expected 0x0A; got: 0x%X)", *n_ptr);
 328                                         }
 329                                 } else {
 330                                         char *error = estrndup(n_ptr, strcspn(n_ptr, "\r\n "));
 331                                         http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Invalid chunk size: '%s' at pos %d", error, n_ptr - encoded);
 332                                         efree(error);
 333                                 }
 334                                 return NULL;
 335                         }
 336                 } else {
 337                         e_ptr = n_ptr;
 338                 }
 339
 340                 /* reached the end */
 341                 if (!chunk_len) {
 342                         break;
 343                 }
 344
 345                 memcpy(d_ptr, e_ptr += EOL_len, chunk_len);
 346                 d_ptr += chunk_len;
 347                 e_ptr += chunk_len + EOL_len;
 348                 *decoded_len += chunk_len;
 349         }
 350
 351         return e_ptr;
 352 }
 353 /* }}} */
 354
 355 /* {{{ char *http_guess_content_type(char *magic_file, long magic_mode, void *data, size_t size, http_send_mode mode) */
 356 PHP_HTTP_API char *_http_guess_content_type(const char *magicfile, long magicmode, void *data_ptr, size_t data_len, http_send_mode data_mode TSRMLS_DC)
 357 {
 358         char *ct = NULL;
 359
 360 #ifdef HTTP_HAVE_MAGIC
 361         /*      magic_load() fails if MAGIC_MIME is set because it
 362                 cowardly adds .mime to the file name */
 363         struct magic_set *magic = magic_open(magicmode &~ MAGIC_MIME);
 364
 365         if (!magic) {
 366                 http_error_ex(HE_WARNING, HTTP_E_INVALID_PARAM, "Invalid magic mode: %ld", magicmode);
 367         } else if (-1 == magic_load(magic, magicfile)) {
 368                 http_error_ex(HE_WARNING, HTTP_E_RUNTIME, "Failed to load magic database '%s' (%s)", magicfile, magic_error(magic));
 369         } else {
 370                 const char *ctype = NULL;
 371
 372                 magic_setflags(magic, magicmode);
 373
 374                 switch (data_mode)
 375                 {
 376                         case SEND_RSRC:
 377                         {
 378                                 char *buffer;
 379                                 size_t b_len;
 380
 381                                 b_len = php_stream_copy_to_mem(data_ptr, &buffer, 65536, 0);
 382                                 ctype = magic_buffer(magic, buffer, b_len);
 383                                 efree(buffer);
 384                         }
 385                         break;
 386
 387                         case SEND_DATA:
 388                                 ctype = magic_buffer(magic, data_ptr, data_len);
 389                         break;
 390
 391                         default:
 392                                 ctype = magic_file(magic, data_ptr);
 393                         break;
 394                 }
 395
 396                 if (ctype) {
 397                         ct = estrdup(ctype);
 398                 } else {
 399                         http_error_ex(HE_WARNING, HTTP_E_RUNTIME, "Failed to guess Content-Type: %s", magic_error(magic));
 400                 }
 401         }
 402         if (magic) {
 403                 magic_close(magic);
 404         }
 405 #else
 406         http_error(HE_WARNING, HTTP_E_RUNTIME, "Cannot guess Content-Type; libmagic not available");
 407 #endif
 408
 409         return ct;
 410 }
 411 /* }}} */
 412 /*
 413  * Local variables:
 414  * tab-width: 4
 415  * c-basic-offset: 4
 416  * End:
 417  * vim600: noet sw=4 ts=4 fdm=marker
 418  * vim<600: noet sw=4 ts=4
 419  */
 420