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 #include "php_output.h"
  26 #include "ext/standard/md5.h"
  27
  28 #include "php_http.h"
  29 #include "php_http_std_defs.h"
  30 #include "php_http_api.h"
  31 #include "php_http_send_api.h"
  32 #include "php_http_cache_api.h"
  33 #include "php_http_headers_api.h"
  34
  35 #ifdef ZEND_ENGINE_2
  36 #       include "php_http_exception_object.h"
  37 #endif
  38
  39 ZEND_EXTERN_MODULE_GLOBALS(http);
  40
  41 /* char *pretty_key(char *, size_t, zend_bool, zebd_bool) */
  42 char *_http_pretty_key(char *key, size_t key_len, zend_bool uctitle, zend_bool xhyphen)
  43 {
  44         if (key && key_len) {
  45                 unsigned i, wasalpha;
  46                 if (wasalpha = isalpha(key[0])) {
  47                         key[0] = uctitle ? toupper(key[0]) : tolower(key[0]);
  48                 }
  49                 for (i = 1; i < key_len; i++) {
  50                         if (isalpha(key[i])) {
  51                                 key[i] = ((!wasalpha) && uctitle) ? toupper(key[i]) : tolower(key[i]);
  52                                 wasalpha = 1;
  53                         } else {
  54                                 if (xhyphen && (key[i] == '_')) {
  55                                         key[i] = '-';
  56                                 }
  57                                 wasalpha = 0;
  58                         }
  59                 }
  60         }
  61         return key;
  62 }
  63 /* }}} */
  64
  65 /* {{{ void http_error(long, long, char*) */
  66 void _http_error_ex(long type, long code, const char *format, ...)
  67 {
  68         va_list args;
  69         TSRMLS_FETCH();
  70
  71         va_start(args, format);
  72         if (type == E_THROW) {
  73 #ifdef ZEND_ENGINE_2
  74                 char *message;
  75                 vspprintf(&message, 0, format, args);
  76                 zend_throw_exception(http_exception_get_default(), message, code TSRMLS_CC);
  77 #else
  78                 type = E_WARNING;
  79 #endif
  80         }
  81         if (type != E_THROW) {
  82                 php_verror(NULL, "", type, format, args TSRMLS_CC);
  83         }
  84         va_end(args);
  85 }
  86 /* }}} */
  87
  88 /* {{{ static STATUS http_ob_stack_get(php_ob_buffer *, php_ob_buffer **) */
  89 static STATUS http_ob_stack_get(php_ob_buffer *o, php_ob_buffer **s)
  90 {
  91         static int i = 0;
  92         php_ob_buffer *b = emalloc(sizeof(php_ob_buffer));
  93         b->handler_name = estrdup(o->handler_name);
  94         b->buffer = estrndup(o->buffer, o->text_length);
  95         b->text_length = o->text_length;
  96         b->chunk_size = o->chunk_size;
  97         b->erase = o->erase;
  98         s[i++] = b;
  99         return SUCCESS;
 100 }
 101 /* }}} */
 102
 103 /* {{{ zval *http_get_server_var_ex(char *, size_t) */
 104 PHP_HTTP_API zval *_http_get_server_var_ex(const char *key, size_t key_size, zend_bool check TSRMLS_DC)
 105 {
 106         zval **var;
 107         if (SUCCESS == zend_hash_find(HTTP_SERVER_VARS, (char *) key, key_size, (void **) &var)) {
 108                 if (check) {
 109                         return Z_STRVAL_PP(var) && Z_STRLEN_PP(var) ? *var : NULL;
 110                 } else {
 111                         return *var;
 112                 }
 113         }
 114         return NULL;
 115 }
 116 /* }}} */
 117
 118 /* {{{ void http_ob_etaghandler(char *, uint, char **, uint *, int) */
 119 PHP_HTTP_API void _http_ob_etaghandler(char *output, uint output_len,
 120         char **handled_output, uint *handled_output_len, int mode TSRMLS_DC)
 121 {
 122         char etag[33] = { 0 };
 123         unsigned char digest[16];
 124
 125         if (mode & PHP_OUTPUT_HANDLER_START) {
 126                 PHP_MD5Init(&HTTP_G(etag_md5));
 127         }
 128
 129         PHP_MD5Update(&HTTP_G(etag_md5), output, output_len);
 130
 131         if (mode & PHP_OUTPUT_HANDLER_END) {
 132                 PHP_MD5Final(digest, &HTTP_G(etag_md5));
 133
 134                 /* just do that if desired */
 135                 if (HTTP_G(etag_started)) {
 136                         make_digest(etag, digest);
 137
 138                         if (http_etag_match("HTTP_IF_NONE_MATCH", etag)) {
 139                                 http_send_status(304);
 140                                 zend_bailout();
 141                         } else {
 142                                 http_send_etag(etag, 32);
 143                         }
 144                 }
 145         }
 146
 147         *handled_output_len = output_len;
 148         *handled_output = estrndup(output, output_len);
 149 }
 150 /* }}} */
 151
 152 /* {{{ STATUS http_start_ob_handler(php_output_handler_func_t, char *, uint, zend_bool) */
 153 PHP_HTTP_API STATUS _http_start_ob_handler(php_output_handler_func_t handler_func,
 154         char *handler_name, uint chunk_size, zend_bool erase TSRMLS_DC)
 155 {
 156         php_ob_buffer **stack;
 157         int count, i;
 158
 159         if (count = OG(ob_nesting_level)) {
 160                 stack = ecalloc(count, sizeof(php_ob_buffer *));
 161
 162                 if (count > 1) {
 163                         zend_stack_apply_with_argument(&OG(ob_buffers), ZEND_STACK_APPLY_BOTTOMUP,
 164                                 (int (*)(void *elem, void *)) http_ob_stack_get, stack);
 165                 }
 166
 167                 if (count > 0) {
 168                         http_ob_stack_get(&OG(active_ob_buffer), stack);
 169                 }
 170
 171                 while (OG(ob_nesting_level)) {
 172                         php_end_ob_buffer(0, 0 TSRMLS_CC);
 173                 }
 174         }
 175
 176         php_ob_set_internal_handler(handler_func, chunk_size, handler_name, erase TSRMLS_CC);
 177
 178         for (i = 0; i < count; i++) {
 179                 php_ob_buffer *s = stack[i];
 180                 if (strcmp(s->handler_name, "default output handler")) {
 181                         php_start_ob_buffer_named(s->handler_name, s->chunk_size, s->erase TSRMLS_CC);
 182                 }
 183                 php_body_write(s->buffer, s->text_length TSRMLS_CC);
 184                 efree(s->handler_name);
 185                 efree(s->buffer);
 186                 efree(s);
 187         }
 188         if (count) {
 189                 efree(stack);
 190         }
 191
 192         return SUCCESS;
 193 }
 194 /* }}} */
 195
 196 /* {{{ STATUS http_chunked_decode(char *, size_t, char **, size_t *) */
 197 PHP_HTTP_API STATUS _http_chunked_decode(const char *encoded, size_t encoded_len,
 198         char **decoded, size_t *decoded_len TSRMLS_DC)
 199 {
 200         const char *e_ptr;
 201         char *d_ptr;
 202
 203         *decoded_len = 0;
 204         *decoded = ecalloc(1, encoded_len);
 205         d_ptr = *decoded;
 206         e_ptr = encoded;
 207
 208         while (((e_ptr - encoded) - encoded_len) > 0) {
 209                 char hex_len[9] = {0};
 210                 size_t chunk_len = 0;
 211                 int i = 0;
 212
 213                 /* read in chunk size */
 214                 while (isxdigit(*e_ptr)) {
 215                         if (i == 9) {
 216                                 http_error_ex(E_WARNING, HTTP_E_PARSE, "Chunk size is too long: 0x%s...", hex_len);
 217                                 efree(*decoded);
 218                                 return FAILURE;
 219                         }
 220                         hex_len[i++] = *e_ptr++;
 221                 }
 222
 223                 /* reached the end */
 224                 if (!strcmp(hex_len, "0")) {
 225                         break;
 226                 }
 227
 228                 /* new line */
 229                 if (strncmp(e_ptr, HTTP_CRLF, 2)) {
 230                         http_error_ex(E_WARNING, HTTP_E_PARSE, "Invalid character (expected 0x0D 0x0A; got: %x %x)", *e_ptr, *(e_ptr + 1));
 231                         efree(*decoded);
 232                         return FAILURE;
 233                 }
 234
 235                 /* hex to long */
 236                 {
 237                         char *error = NULL;
 238                         chunk_len = strtol(hex_len, &error, 16);
 239                         if (error == hex_len) {
 240                                 http_error_ex(E_WARNING, HTTP_E_PARSE, "Invalid chunk size string: '%s'", hex_len);
 241                                 efree(*decoded);
 242                                 return FAILURE;
 243                         }
 244                 }
 245
 246                 memcpy(d_ptr, e_ptr += 2, chunk_len);
 247                 d_ptr += chunk_len;
 248                 e_ptr += chunk_len + 2;
 249                 *decoded_len += chunk_len;
 250         }
 251
 252         return SUCCESS;
 253 }
 254 /* }}} */
 255
 256 /* {{{ STATUS http_split_response(zval *, zval *, zval *) */
 257 PHP_HTTP_API STATUS _http_split_response(zval *response, zval *headers, zval *body TSRMLS_DC)
 258 {
 259         char *b = NULL;
 260         size_t l = 0;
 261         STATUS status = http_split_response_ex(Z_STRVAL_P(response), Z_STRLEN_P(response), Z_ARRVAL_P(headers), &b, &l);
 262         ZVAL_STRINGL(body, b, l, 0);
 263         return status;
 264 }
 265 /* }}} */
 266
 267 /* {{{ STATUS http_split_response(char *, size_t, HashTable *, char **, size_t *) */
 268 PHP_HTTP_API STATUS _http_split_response_ex(char *response, size_t response_len,
 269         HashTable *headers, char **body, size_t *body_len TSRMLS_DC)
 270 {
 271         char *header = response, *real_body = NULL;
 272
 273         while (0 < (response_len - (response - header + 4))) {
 274                 if (    (*response++ == '\r') &&
 275                                 (*response++ == '\n') &&
 276                                 (*response++ == '\r') &&
 277                                 (*response++ == '\n')) {
 278                         real_body = response;
 279                         break;
 280                 }
 281         }
 282
 283         if (real_body && (*body_len = (response_len - (real_body - header)))) {
 284                 *body = ecalloc(1, *body_len + 1);
 285                 memcpy(*body, real_body, *body_len);
 286         }
 287
 288         return http_parse_headers_ex(header, real_body ? response_len - *body_len : response_len, headers, 1);
 289 }
 290 /* }}} */
 291
 292 /*
 293  * Local variables:
 294  * tab-width: 4
 295  * c-basic-offset: 4
 296  * End:
 297  * vim600: noet sw=4 ts=4 fdm=marker
 298  * vim<600: noet sw=4 ts=4
 299  */
 300