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
  22 #include <ctype.h>
  23
  24 #include "php.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 ZEND_EXTERN_MODULE_GLOBALS(http);
  38
  39 /* char *pretty_key(char *, size_t, zend_bool, zebd_bool) */
  40 char *_http_pretty_key(char *key, size_t key_len, zend_bool uctitle, zend_bool xhyphen)
  41 {
  42         if (key && key_len) {
  43                 unsigned i, wasalpha;
  44                 if (wasalpha = isalpha(key[0])) {
  45                         key[0] = uctitle ? toupper(key[0]) : tolower(key[0]);
  46                 }
  47                 for (i = 1; i < key_len; i++) {
  48                         if (isalpha(key[i])) {
  49                                 key[i] = ((!wasalpha) && uctitle) ? toupper(key[i]) : tolower(key[i]);
  50                                 wasalpha = 1;
  51                         } else {
  52                                 if (xhyphen && (key[i] == '_')) {
  53                                         key[i] = '-';
  54                                 }
  55                                 wasalpha = 0;
  56                         }
  57                 }
  58         }
  59         return key;
  60 }
  61 /* }}} */
  62
  63 /* {{{ */
  64 void _http_key_list_default_decoder(const char *encoded, size_t encoded_len, char **decoded, size_t *decoded_len TSRMLS_DC)
  65 {
  66         *decoded = estrndup(encoded, encoded_len);
  67         *decoded_len = (size_t) php_url_decode(*decoded, encoded_len);
  68 }
  69 /* }}} */
  70
  71 /* {{{ */
  72 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)
  73 {
  74         const char *key = list, *val = NULL;
  75         int vallen = 0, keylen = 0, done = 0;
  76         zval array;
  77
  78         Z_ARRVAL(array) = items;
  79
  80         if (!(val = strchr(list, '='))) {
  81                 return FAILURE;
  82         }
  83
  84 #define HTTP_KEYLIST_VAL(array, k, str, len) \
  85         { \
  86                 char *decoded; \
  87                 size_t decoded_len; \
  88                 if (decode) { \
  89                         decode(str, len, &decoded, &decoded_len TSRMLS_CC); \
  90                 } else { \
  91                         decoded = estrdup(str); \
  92                         decoded_len = len; \
  93                 } \
  94                 add_assoc_stringl(array, k, decoded, decoded_len, 0); \
  95         }
  96 #define HTTP_KEYLIST_FIXKEY() \
  97         { \
  98                         while (isspace(*key)) ++key; \
  99                         keylen = val - key; \
 100                         while (isspace(key[keylen - 1])) --keylen; \
 101         }
 102 #define HTTP_KEYLIST_FIXVAL() \
 103         { \
 104                         ++val; \
 105                         while (isspace(*val)) ++val; \
 106                         vallen = key - val; \
 107                         while (isspace(val[vallen - 1])) --vallen; \
 108         }
 109
 110         HTTP_KEYLIST_FIXKEY();
 111
 112         if (first_entry_is_name_value_pair) {
 113                 HTTP_KEYLIST_VAL(&array, "name", key, keylen);
 114
 115                 /* just one name=value */
 116                 if (!(key = strchr(val, separator))) {
 117                         key = val + strlen(val);
 118                         HTTP_KEYLIST_FIXVAL();
 119                         HTTP_KEYLIST_VAL(&array, "value", val, vallen);
 120                         goto list_done;
 121                 }
 122                 /* additional info appended */
 123                 else {
 124                         HTTP_KEYLIST_FIXVAL();
 125                         HTTP_KEYLIST_VAL(&array, "value", val, vallen);
 126                 }
 127         }
 128
 129         do {
 130                 char *keydup = NULL;
 131
 132                 if (!(val = strchr(key, '='))) {
 133                         break;
 134                 }
 135
 136                 /* start at 0 if first_entry_is_name_value_pair==0 */
 137                 if (zend_hash_num_elements(items)) {
 138                         ++key;
 139                 }
 140
 141                 HTTP_KEYLIST_FIXKEY();
 142                 keydup = estrndup(key, keylen);
 143                 if (!(key = strchr(val, separator))) {
 144                         done = 1;
 145                         key = val + strlen(val);
 146                 }
 147                 HTTP_KEYLIST_FIXVAL();
 148                 HTTP_KEYLIST_VAL(&array, keydup, val, vallen);
 149                 efree(keydup);
 150         } while (!done);
 151
 152 list_done:
 153         return SUCCESS;
 154 }
 155
 156 /* {{{ void http_error(long, long, char*) */
 157 void _http_error_ex(long type, long code, const char *format, ...)
 158 {
 159         va_list args;
 160         TSRMLS_FETCH();
 161
 162         va_start(args, format);
 163         if (type == E_THROW) {
 164 #ifdef ZEND_ENGINE_2
 165                 char *message;
 166                 vspprintf(&message, 0, format, args);
 167                 zend_throw_exception(http_exception_get_for_code(code), message, code TSRMLS_CC);
 168 #else
 169                 type = E_WARNING;
 170 #endif
 171         }
 172         if (type != E_THROW) {
 173                 php_verror(NULL, "", type, format, args TSRMLS_CC);
 174         }
 175         va_end(args);
 176 }
 177 /* }}} */
 178
 179 /* {{{ STATUS http_exit(int, char*) */
 180 STATUS _http_exit_ex(int status, char *header, zend_bool free_header TSRMLS_DC)
 181 {
 182         if (SUCCESS != http_send_status_header(status, header)) {
 183                 http_error_ex(E_WARNING, HTTP_E_HEADER, "Failed to exit with status/header: %d - %s", status, header ? header : "");
 184                 if (free_header && header) {
 185                         efree(header);
 186                 }
 187                 return FAILURE;
 188         }
 189         if (free_header && header) {
 190                 efree(header);
 191         }
 192         zend_bailout();
 193         /* fake */
 194         return SUCCESS;
 195 }
 196 /* }}} */
 197
 198 /* {{{ STATUS http_check_method(char *) */
 199 STATUS _http_check_method_ex(const char *method, const char *methods)
 200 {
 201         const char *found;
 202
 203         if (    (found = strstr(methods, method)) &&
 204                         (found == method || !isalpha(found[-1])) &&
 205                         (!isalpha(found[strlen(method) + 1]))) {
 206                 return SUCCESS;
 207         }
 208         return FAILURE;
 209 }
 210 /* }}} */
 211
 212 /* {{{ zval *http_get_server_var_ex(char *, size_t) */
 213 PHP_HTTP_API zval *_http_get_server_var_ex(const char *key, size_t key_size, zend_bool check TSRMLS_DC)
 214 {
 215         zval **var;
 216         if (SUCCESS == zend_hash_find(HTTP_SERVER_VARS, (char *) key, key_size, (void **) &var)) {
 217                 if (check) {
 218                         return Z_STRVAL_PP(var) && Z_STRLEN_PP(var) ? *var : NULL;
 219                 } else {
 220                         return *var;
 221                 }
 222         }
 223         return NULL;
 224 }
 225 /* }}} */
 226
 227
 228 /* {{{ char *http_chunked_decode(char *, size_t, char **, size_t *) */
 229 PHP_HTTP_API const char *_http_chunked_decode(const char *encoded, size_t encoded_len,
 230         char **decoded, size_t *decoded_len TSRMLS_DC)
 231 {
 232         const char *e_ptr;
 233         char *d_ptr;
 234
 235         *decoded_len = 0;
 236         *decoded = ecalloc(1, encoded_len);
 237         d_ptr = *decoded;
 238         e_ptr = encoded;
 239
 240         while (((e_ptr - encoded) - encoded_len) > 0) {
 241                 int no_crlf = 0;
 242                 char *n_ptr;
 243                 size_t chunk_len = 0;
 244
 245                 chunk_len = strtol(e_ptr, &n_ptr, 16);
 246
 247                 /* check if:
 248                  * - we could not read in chunk size
 249                  * - chunk size is not followed by HTTP_CRLF|NUL
 250                  */
 251                 if ((n_ptr == e_ptr) || (*n_ptr && (no_crlf = strncmp(n_ptr, HTTP_CRLF, lenof(HTTP_CRLF))))) {
 252                         /* don't fail on apperently not encoded data */
 253                         if (e_ptr == encoded) {
 254                                 memcpy(*decoded, encoded, encoded_len);
 255                                 *decoded_len = encoded_len;
 256                                 return encoded + encoded_len;
 257                         } else {
 258                                 efree(*decoded);
 259                                 if (no_crlf) {
 260                                         http_error_ex(E_WARNING, HTTP_E_PARSE, "Invalid character (expected 0x0D 0x0A; got: 0x%x 0x%x)", *n_ptr, *(n_ptr + 1));
 261                                 } else {
 262                                         char *error = estrndup(n_ptr, strcspn(n_ptr, "\r\n \0"));
 263                                         http_error_ex(E_WARNING, HTTP_E_PARSE, "Invalid chunk size: '%s' at pos %d", error, n_ptr - encoded);
 264                                         efree(error);
 265                                 }
 266
 267                                 return NULL;
 268                         }
 269                 } else {
 270                         e_ptr = n_ptr;
 271                 }
 272
 273                 /* reached the end */
 274                 if (!chunk_len) {
 275                         break;
 276                 }
 277
 278                 memcpy(d_ptr, e_ptr += 2, chunk_len);
 279                 d_ptr += chunk_len;
 280                 e_ptr += chunk_len + 2;
 281                 *decoded_len += chunk_len;
 282         }
 283
 284         return e_ptr;
 285 }
 286 /* }}} */
 287
 288 /* {{{ STATUS http_split_response(zval *, zval *, zval *) */
 289 PHP_HTTP_API STATUS _http_split_response(zval *response, zval *headers, zval *body TSRMLS_DC)
 290 {
 291         char *b = NULL;
 292         size_t l = 0;
 293         STATUS status = http_split_response_ex(Z_STRVAL_P(response), Z_STRLEN_P(response), Z_ARRVAL_P(headers), &b, &l);
 294         ZVAL_STRINGL(body, b, l, 0);
 295         return status;
 296 }
 297 /* }}} */
 298
 299 /* {{{ STATUS http_split_response(char *, size_t, HashTable *, char **, size_t *) */
 300 PHP_HTTP_API STATUS _http_split_response_ex(char *response, size_t response_len,
 301         HashTable *headers, char **body, size_t *body_len TSRMLS_DC)
 302 {
 303         char *header = response, *real_body = NULL;
 304
 305         while (0 < (response_len - (response - header + 4))) {
 306                 if (    (*response++ == '\r') &&
 307                                 (*response++ == '\n') &&
 308                                 (*response++ == '\r') &&
 309                                 (*response++ == '\n')) {
 310                         real_body = response;
 311                         break;
 312                 }
 313         }
 314
 315         if (real_body && (*body_len = (response_len - (real_body - header)))) {
 316                 *body = ecalloc(1, *body_len + 1);
 317                 memcpy(*body, real_body, *body_len);
 318         }
 319
 320         return http_parse_headers_ex(header, headers, 1);
 321 }
 322 /* }}} */
 323
 324 /*
 325  * Local variables:
 326  * tab-width: 4
 327  * c-basic-offset: 4
 328  * End:
 329  * vim600: noet sw=4 ts=4 fdm=marker
 330  * vim<600: noet sw=4 ts=4
 331  */
 332