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

   1 /*
   2     +--------------------------------------------------------------------+
   3     | PECL :: http                                                       |
   4     +--------------------------------------------------------------------+
   5     | Redistribution and use in source and binary forms, with or without |
   6     | modification, are permitted provided that the conditions mentioned |
   7     | in the accompanying LICENSE file are met.                          |
   8     +--------------------------------------------------------------------+
   9     | Copyright (c) 2004-2007, Michael Wallner <mike@php.net>            |
  10     +--------------------------------------------------------------------+
  11 */
  12
  13 /* $Id$ */
  14
  15 #define HTTP_WANT_SAPI
  16 #define HTTP_WANT_ZLIB
  17 #define HTTP_WANT_MAGIC
  18 #include "php_http.h"
  19
  20 #include "php_streams.h"
  21
  22 #include "php_http_api.h"
  23 #include "php_http_cache_api.h"
  24 #include "php_http_date_api.h"
  25 #include "php_http_encoding_api.h"
  26 #include "php_http_headers_api.h"
  27 #include "php_http_send_api.h"
  28
  29 /* {{{ http_flush() */
  30 #define http_flush(d, l) _http_flush(NULL, (d), (l) TSRMLS_CC)
  31 static inline void _http_flush(void *nothing, const char *data, size_t data_len TSRMLS_DC)
  32 {
  33         PHPWRITE(data, data_len);
  34         /*      we really only need to flush when throttling is enabled,
  35                 because we push the data as fast as possible anyway if not */
  36         if (HTTP_G->send.throttle_delay >= HTTP_DIFFSEC) {
  37                 if (OG(ob_nesting_level)) {
  38                         php_end_ob_buffer(1, 1 TSRMLS_CC);
  39                 }
  40                 if (!OG(implicit_flush)) {
  41                         sapi_flush(TSRMLS_C);
  42                 }
  43                 http_sleep(HTTP_G->send.throttle_delay);
  44         }
  45 }
  46 /* }}} */
  47
  48 /* {{{ http_send_response_start */
  49 #define http_send_response_start(b, cl) _http_send_response_start((b), (cl) TSRMLS_CC)
  50 static inline void _http_send_response_start(void **buffer, size_t content_length TSRMLS_DC)
  51 {
  52         int encoding;
  53
  54         if ((encoding = http_encoding_response_start(content_length, 0))) {
  55 #ifdef HTTP_HAVE_ZLIB
  56                 *((http_encoding_stream **) buffer) = http_encoding_deflate_stream_init(NULL,
  57                         (encoding == HTTP_ENCODING_GZIP) ?
  58                                 HTTP_DEFLATE_TYPE_GZIP : HTTP_DEFLATE_TYPE_ZLIB);
  59 #endif
  60         }
  61         /* flush headers */
  62         sapi_flush(TSRMLS_C);
  63 }
  64 /* }}} */
  65
  66 /* {{{ http_send_response_data_plain */
  67 #define http_send_response_data_plain(b, d, dl) _http_send_response_data_plain((b), (d), (dl) TSRMLS_CC)
  68 static inline void _http_send_response_data_plain(void **buffer, const char *data, size_t data_len TSRMLS_DC)
  69 {
  70         if (HTTP_G->send.deflate.response && HTTP_G->send.deflate.encoding) {
  71 #ifdef HTTP_HAVE_ZLIB
  72                 char *encoded;
  73                 size_t encoded_len;
  74                 http_encoding_stream *s = *((http_encoding_stream **) buffer);
  75
  76                 http_encoding_deflate_stream_update(s, data, data_len, &encoded, &encoded_len);
  77                 if (HTTP_G->send.buffer_size) {
  78                         phpstr_chunked_output((phpstr **) &s->storage, encoded, encoded_len, HTTP_G->send.buffer_size, _http_flush, NULL TSRMLS_CC);
  79                 } else {
  80                         http_flush(encoded, encoded_len);
  81                 }
  82                 efree(encoded);
  83 #else
  84                 http_error(HE_ERROR, HTTP_E_RESPONSE, "Attempt to send GZIP response despite being able to do so; please report this bug");
  85 #endif
  86         } else if (HTTP_G->send.buffer_size) {
  87                 phpstr_chunked_output((phpstr **) buffer, data, data_len, HTTP_G->send.buffer_size, _http_flush, NULL TSRMLS_CC);
  88         } else {
  89                 http_flush(data, data_len);
  90         }
  91 }
  92 /* }}} */
  93
  94 /* {{{ http_send_response_data_fetch */
  95 #define http_send_response_data_fetch(b, d, l, m, s, e) _http_send_response_data_fetch((b), (d), (l), (m), (s), (e) TSRMLS_CC)
  96 static inline void _http_send_response_data_fetch(void **buffer, const void *data, size_t data_len, http_send_mode mode, size_t begin, size_t end TSRMLS_DC)
  97 {
  98         long bsz, got, len = end - begin;
  99
 100         if (!(bsz = HTTP_G->send.buffer_size)) {
 101                 bsz = HTTP_SENDBUF_SIZE;
 102         }
 103
 104         switch (mode) {
 105                 case SEND_RSRC: {
 106                         php_stream *s = (php_stream *) data;
 107                         if (SUCCESS == php_stream_seek(s, begin, SEEK_SET)) {
 108                                 char *buf = emalloc(bsz);
 109
 110                                 while (len > 0) {
 111                                         got = php_stream_read(s, buf, MIN(len, bsz));
 112                                         http_send_response_data_plain(buffer, buf, got);
 113                                         len -= got;
 114                                 }
 115
 116                                 efree(buf);
 117                         }
 118                         break;
 119                 }
 120                 case SEND_DATA: {
 121                         const char *buf = ((const char *) data) + begin;
 122                         while (len > 0) {
 123                                 got = MIN(len, bsz);
 124                                 http_send_response_data_plain(buffer, buf, got);
 125                                 len -= got;
 126                                 buf += got;
 127                         }
 128                         break;
 129                 }
 130                 EMPTY_SWITCH_DEFAULT_CASE();
 131         }
 132 }
 133 /* }}} */
 134
 135 /* {{{ http_send_response_finish */
 136 #define http_send_response_finish(b) _http_send_response_finish((b) TSRMLS_CC)
 137 static inline void _http_send_response_finish(void **buffer TSRMLS_DC)
 138 {
 139         if (HTTP_G->send.deflate.response && HTTP_G->send.deflate.encoding) {
 140 #ifdef HTTP_HAVE_ZLIB
 141                 char *encoded = NULL;
 142                 size_t encoded_len = 0;
 143                 http_encoding_stream *s = *((http_encoding_stream **) buffer);
 144
 145                 http_encoding_deflate_stream_finish(s, &encoded, &encoded_len);
 146                 if (HTTP_G->send.buffer_size) {
 147                         phpstr_chunked_output((phpstr **) &s->storage, encoded, encoded_len, 0, _http_flush, NULL TSRMLS_CC);
 148                 } else {
 149                         http_flush(encoded, encoded_len);
 150                 }
 151                 http_encoding_deflate_stream_free(&s);
 152                 STR_FREE(encoded);
 153 #else
 154                 http_error(HE_ERROR, HTTP_E_RESPONSE, "Attempt to send GZIP response despite being able to do so; please report this bug");
 155 #endif
 156         } else if (HTTP_G->send.buffer_size) {
 157                 phpstr_chunked_output((phpstr **) buffer, NULL, 0, 0, _http_flush, NULL TSRMLS_CC);
 158         }
 159 }
 160 /* }}} */
 161
 162 /* {{{ */
 163 PHP_MINIT_FUNCTION(http_send)
 164 {
 165         HTTP_LONG_CONSTANT("HTTP_REDIRECT", HTTP_REDIRECT);
 166         HTTP_LONG_CONSTANT("HTTP_REDIRECT_PERM", HTTP_REDIRECT_PERM);
 167         HTTP_LONG_CONSTANT("HTTP_REDIRECT_FOUND", HTTP_REDIRECT_FOUND);
 168         HTTP_LONG_CONSTANT("HTTP_REDIRECT_POST", HTTP_REDIRECT_POST);
 169         HTTP_LONG_CONSTANT("HTTP_REDIRECT_PROXY", HTTP_REDIRECT_PROXY);
 170         HTTP_LONG_CONSTANT("HTTP_REDIRECT_TEMP", HTTP_REDIRECT_TEMP);
 171
 172         return SUCCESS;
 173 }
 174 /* }}} */
 175
 176 /* {{{ http_find_header */
 177 typedef struct {
 178         const char *h;
 179         size_t l;
 180 } http_response_header_t;
 181
 182 static int http_find_header(void *data, void *arg)
 183 {
 184         http_response_header_t *h = arg;
 185         sapi_header_struct *s = data;
 186
 187         return (!strncasecmp(s->header, h->h, h->l)) && s->header[h->l] == ':';
 188 }
 189 /* }}} */
 190
 191 /* {{{ void http_hide_header(char *) */
 192 PHP_HTTP_API void _http_hide_header_ex(const char *name, size_t name_len TSRMLS_DC)
 193 {
 194         http_response_header_t h = {name, name_len};
 195         zend_llist_del_element(&SG(sapi_headers).headers, (void *) &h, http_find_header);
 196 }
 197 /* }}} */
 198
 199 /* {{{ void http_send_header_zval(char*, zval **, zend_bool) */
 200 PHP_HTTP_API void _http_send_header_zval_ex(const char *name, size_t name_len, zval **val, zend_bool replace TSRMLS_DC)
 201 {
 202         if (!val || !*val || Z_TYPE_PP(val) == IS_NULL || (Z_TYPE_PP(val) == IS_STRING && !Z_STRLEN_PP(val))) {
 203                 http_hide_header_ex(name, name_len);
 204         } else if (Z_TYPE_PP(val) == IS_ARRAY || Z_TYPE_PP(val) == IS_OBJECT) {
 205                 zend_bool first = replace;
 206                 zval **data_ptr;
 207                 HashPosition pos;
 208
 209                 FOREACH_HASH_VAL(pos, HASH_OF(*val), data_ptr) {
 210                         zval *data = http_zsep(IS_STRING, *data_ptr);
 211
 212                         http_send_header_ex(name, name_len, Z_STRVAL_P(data), Z_STRLEN_P(data), first, NULL);
 213                         zval_ptr_dtor(&data);
 214                         first = 0;
 215                 }
 216         } else {
 217                 zval *data = http_zsep(IS_STRING, *val);
 218
 219                 http_send_header_ex(name, name_len, Z_STRVAL_P(data), Z_STRLEN_P(data), replace, NULL);
 220                 zval_ptr_dtor(&data);
 221         }
 222 }
 223 /* }}} */
 224
 225 /* {{{ STATUS http_send_header(char *, char *, zend_bool) */
 226 PHP_HTTP_API STATUS _http_send_header_ex(const char *name, size_t name_len, const char *value, size_t value_len, zend_bool replace, char **sent_header TSRMLS_DC)
 227 {
 228         STATUS ret;
 229
 230         if (value && value_len) {
 231                 size_t header_len = sizeof(": ") + name_len + value_len + 1;
 232                 char *header = emalloc(header_len + 1);
 233
 234                 header[header_len] = '\0';
 235                 header_len = snprintf(header, header_len, "%s: %s", name, value);
 236                 ret = http_send_header_string_ex(header, header_len, replace);
 237                 if (sent_header) {
 238                         *sent_header = header;
 239                 } else {
 240                         efree(header);
 241                 }
 242         } else {
 243                 http_hide_header_ex(name, name_len);
 244                 ret = SUCCESS;
 245         }
 246         return ret;
 247 }
 248 /* }}} */
 249
 250 /* {{{ STATUS http_send_status_header(int, char *) */
 251 PHP_HTTP_API STATUS _http_send_status_header_ex(int status, const char *header, size_t header_len, zend_bool replace TSRMLS_DC)
 252 {
 253         STATUS ret;
 254         sapi_header_line h = {(char *) header, header_len, status};
 255         if (SUCCESS != (ret = sapi_header_op(replace ? SAPI_HEADER_REPLACE : SAPI_HEADER_ADD, &h TSRMLS_CC))) {
 256                 http_error_ex(HE_WARNING, HTTP_E_HEADER, "Could not send header: %s (%d)", header, status);
 257         }
 258         return ret;
 259 }
 260 /* }}} */
 261
 262 /* {{{ STATUS http_send_last_modified(int) */
 263 PHP_HTTP_API STATUS _http_send_last_modified_ex(time_t t, char **sent_header TSRMLS_DC)
 264 {
 265         STATUS ret;
 266         char *date = http_date(t);
 267
 268         if (!date) {
 269                 return FAILURE;
 270         }
 271
 272         ret = http_send_header_ex("Last-Modified", lenof("Last-Modified"), date, strlen(date), 1, sent_header);
 273         efree(date);
 274
 275         /* remember */
 276         HTTP_G->send.last_modified = t;
 277
 278         return ret;
 279 }
 280 /* }}} */
 281
 282 /* {{{ STATUS http_send_etag(char *, size_t) */
 283 PHP_HTTP_API STATUS _http_send_etag_ex(const char *etag, size_t etag_len, char **sent_header TSRMLS_DC)
 284 {
 285         STATUS status;
 286         char *etag_header;
 287         size_t etag_header_len;
 288
 289         if (!etag_len){
 290                 http_error_ex(HE_WARNING, HTTP_E_HEADER, "Attempt to send empty ETag (previous: %s)\n", HTTP_G->send.unquoted_etag);
 291                 return FAILURE;
 292         }
 293
 294         etag_header_len = spprintf(&etag_header, 0, "ETag: \"%s\"", etag);
 295         status = http_send_header_string_ex(etag_header, etag_header_len, 1);
 296
 297         /* remember */
 298         STR_SET(HTTP_G->send.unquoted_etag, estrndup(etag, etag_len));
 299
 300         if (sent_header) {
 301                 *sent_header = etag_header;
 302         } else {
 303                 efree(etag_header);
 304         }
 305
 306         return status;
 307 }
 308 /* }}} */
 309
 310 /* {{{ STATUS http_send_content_type(char *, size_t) */
 311 PHP_HTTP_API STATUS _http_send_content_type(const char *content_type, size_t ct_len TSRMLS_DC)
 312 {
 313         HTTP_CHECK_CONTENT_TYPE(content_type, return FAILURE);
 314
 315         /* remember for multiple ranges */
 316         STR_FREE(HTTP_G->send.content_type);
 317         HTTP_G->send.content_type = estrndup(content_type, ct_len);
 318
 319         return http_send_header_ex("Content-Type", lenof("Content-Type"), content_type, ct_len, 1, NULL);
 320 }
 321 /* }}} */
 322
 323 /* {{{ STATUS http_send_content_disposition(char *, size_t, zend_bool) */
 324 PHP_HTTP_API STATUS _http_send_content_disposition(const char *filename, size_t f_len, zend_bool send_inline TSRMLS_DC)
 325 {
 326         STATUS status;
 327         char *cd_header;
 328
 329         if (send_inline) {
 330                 cd_header = ecalloc(1, sizeof("Content-Disposition: inline; filename=\"\"") + f_len);
 331                 sprintf(cd_header, "Content-Disposition: inline; filename=\"%s\"", filename);
 332         } else {
 333                 cd_header = ecalloc(1, sizeof("Content-Disposition: attachment; filename=\"\"") + f_len);
 334                 sprintf(cd_header, "Content-Disposition: attachment; filename=\"%s\"", filename);
 335         }
 336
 337         status = http_send_header_string(cd_header);
 338         efree(cd_header);
 339         return status;
 340 }
 341 /* }}} */
 342
 343 /* {{{ STATUS http_send(void *, size_t, http_send_mode) */
 344 PHP_HTTP_API STATUS _http_send_ex(const void *data_ptr, size_t data_size, http_send_mode data_mode, zend_bool no_cache TSRMLS_DC)
 345 {
 346         void *s = NULL;
 347         HashTable ranges;
 348         http_range_status range_status;
 349
 350         if (!data_ptr) {
 351                 return FAILURE;
 352         }
 353         if (!data_size) {
 354                 return SUCCESS;
 355         }
 356
 357         /* enable partial dl and resume */
 358         http_send_header_string("Accept-Ranges: bytes");
 359
 360         zend_hash_init(&ranges, 0, NULL, ZVAL_PTR_DTOR, 0);
 361         range_status = http_get_request_ranges(&ranges, data_size);
 362
 363         switch (range_status) {
 364                 case RANGE_ERR:
 365                 {
 366                         zend_hash_destroy(&ranges);
 367                         http_send_status(416);
 368                         return FAILURE;
 369                 }
 370                 case RANGE_OK:
 371                 {
 372                         /* Range Request - only send ranges if entity hasn't changed */
 373                         if (    http_got_server_var("HTTP_IF_RANGE") &&
 374                                         !http_match_etag("HTTP_IF_RANGE", HTTP_G->send.unquoted_etag) &&
 375                                         !http_match_last_modified("HTTP_IF_RANGE", HTTP_G->send.last_modified)) {
 376                                 /* fallthrough to send full entity with 200 Ok */
 377                                 no_cache = 1;
 378                         } else if (     !http_match_etag_ex("HTTP_IF_MATCH", HTTP_G->send.unquoted_etag, 0) ||
 379                                                 !http_match_last_modified_ex("HTTP_IF_UNMODIFIED_SINCE", HTTP_G->send.last_modified, 0) ||
 380                                                 !http_match_last_modified_ex("HTTP_UNLESS_MODIFIED_SINCE", HTTP_G->send.last_modified, 0)) {
 381                                 /* 412 Precondition failed */
 382                                 zend_hash_destroy(&ranges);
 383                                 http_send_status(412);
 384                                 return FAILURE;
 385                         } else if (zend_hash_num_elements(&ranges) == 1) {
 386                                 /* single range */
 387                                 zval **range, **begin, **end;
 388
 389                                 if (    SUCCESS != zend_hash_index_find(&ranges, 0, (void *) &range) ||
 390                                                 SUCCESS != zend_hash_index_find(Z_ARRVAL_PP(range), 0, (void *) &begin) ||
 391                                                 SUCCESS != zend_hash_index_find(Z_ARRVAL_PP(range), 1, (void *) &end)) {
 392                                         /* this should never happen */
 393                                         zend_hash_destroy(&ranges);
 394                                         http_send_status(500);
 395                                         return FAILURE;
 396                                 } else {
 397                                         char range_header_str[256];
 398                                         size_t range_header_len;
 399
 400                                         range_header_len = snprintf(range_header_str, sizeof(range_header_str), "Content-Range: bytes %ld-%ld/%zu", Z_LVAL_PP(begin), Z_LVAL_PP(end), data_size);
 401                                         http_send_status_header_ex(206, range_header_str, range_header_len, 1);
 402                                         http_send_response_start(&s, Z_LVAL_PP(end)-Z_LVAL_PP(begin)+1);
 403                                         http_send_response_data_fetch(&s, data_ptr, data_size, data_mode, Z_LVAL_PP(begin), Z_LVAL_PP(end) + 1);
 404                                         http_send_response_finish(&s);
 405                                         zend_hash_destroy(&ranges);
 406                                         return SUCCESS;
 407                                 }
 408                         } else {
 409                                 /* multi range */
 410                                 HashPosition pos;
 411                                 zval **range, **begin, **end;
 412                                 const char *content_type = HTTP_G->send.content_type;
 413                                 char boundary_str[32], range_header_str[256];
 414                                 size_t boundary_len, range_header_len;
 415
 416                                 boundary_len = http_boundary(boundary_str, sizeof(boundary_str));
 417                                 range_header_len = snprintf(range_header_str, sizeof(range_header_str), "Content-Type: multipart/byteranges; boundary=%s", boundary_str);
 418
 419                                 http_send_status_header_ex(206, range_header_str, range_header_len, 1);
 420                                 http_send_response_start(&s, 0);
 421
 422                                 if (!content_type) {
 423                                         content_type = "application/x-octetstream";
 424                                 }
 425
 426                                 FOREACH_HASH_VAL(pos, &ranges, range) {
 427                                         if (    SUCCESS == zend_hash_index_find(Z_ARRVAL_PP(range), 0, (void *) &begin) &&
 428                                                         SUCCESS == zend_hash_index_find(Z_ARRVAL_PP(range), 1, (void *) &end)) {
 429                                                 char preface_str[512];
 430                                                 size_t preface_len;
 431
 432 #define HTTP_RANGE_PREFACE \
 433         HTTP_CRLF "--%s" \
 434         HTTP_CRLF "Content-Type: %s" \
 435         HTTP_CRLF "Content-Range: bytes %ld-%ld/%zu" \
 436         HTTP_CRLF HTTP_CRLF
 437
 438                                                 preface_len = snprintf(preface_str, sizeof(preface_str), HTTP_RANGE_PREFACE, boundary_str, content_type, Z_LVAL_PP(begin), Z_LVAL_PP(end), data_size);
 439                                                 http_send_response_data_plain(&s, preface_str, preface_len);
 440                                                 http_send_response_data_fetch(&s, data_ptr, data_size, data_mode, Z_LVAL_PP(begin), Z_LVAL_PP(end) + 1);
 441                                         }
 442                                 }
 443
 444                                 http_send_response_data_plain(&s, HTTP_CRLF "--", lenof(HTTP_CRLF "--"));
 445                                 http_send_response_data_plain(&s, boundary_str, boundary_len);
 446                                 http_send_response_data_plain(&s, "--", lenof("--"));
 447
 448                                 http_send_response_finish(&s);
 449                                 zend_hash_destroy(&ranges);
 450                                 return SUCCESS;
 451                         }
 452                 }
 453                 case RANGE_NO:
 454                 {
 455                         zend_hash_destroy(&ranges);
 456
 457                         /* send 304 Not Modified if etag matches - DON'T return on ETag generation failure */
 458                         if (!no_cache && (http_interrupt_ob_etaghandler() || (HTTP_G->send.unquoted_etag != NULL))) {
 459                                 char *etag = NULL;
 460
 461                                 if (HTTP_G->send.unquoted_etag) {
 462                                         etag = estrdup(HTTP_G->send.unquoted_etag);
 463                                 }
 464
 465                                 if (etag || (etag = http_etag(data_ptr, data_size, data_mode))) {
 466                                         char *sent_header = NULL;
 467
 468                                         http_send_etag_ex(etag, strlen(etag), &sent_header);
 469                                         if (http_match_etag("HTTP_IF_NONE_MATCH", etag)) {
 470                                                 return http_exit_ex(304, sent_header, NULL, 0);
 471                                         } else {
 472                                                 STR_FREE(sent_header);
 473                                                 /* no caching for Last-Modified if ETags really don't match */
 474                                                 no_cache = http_got_server_var("HTTP_IF_NONE_MATCH");
 475                                         }
 476                                         efree(etag);
 477                                 }
 478                         }
 479
 480                         /* send 304 Not Modified if last modified matches */
 481                         if (!no_cache && HTTP_G->send.last_modified && http_match_last_modified("HTTP_IF_MODIFIED_SINCE", HTTP_G->send.last_modified)) {
 482                                 char *sent_header = NULL;
 483                                 http_send_last_modified_ex(HTTP_G->send.last_modified, &sent_header);
 484                                 return http_exit_ex(304, sent_header, NULL, 0);
 485                         }
 486
 487                         /* send full response */
 488                         http_send_response_start(&s, data_size);
 489                         http_send_response_data_fetch(&s, data_ptr, data_size, data_mode, 0, data_size);
 490                         http_send_response_finish(&s);
 491                         return SUCCESS;
 492                 }
 493         }
 494         return FAILURE;
 495 }
 496 /* }}} */
 497
 498 /* {{{ STATUS http_send_stream(php_stream *) */
 499 PHP_HTTP_API STATUS _http_send_stream_ex(php_stream *file, zend_bool close_stream, zend_bool no_cache TSRMLS_DC)
 500 {
 501         STATUS status;
 502         php_stream_statbuf ssb;
 503         int orig_flags;
 504
 505         if ((!file) || php_stream_stat(file, &ssb)) {
 506                 char *defct = sapi_get_default_content_type(TSRMLS_C);
 507
 508                 http_hide_header("Content-Disposition");
 509                 http_send_content_type(defct, strlen(defct));
 510                 http_error(HE_WARNING, HTTP_E_RESPONSE, "File not found; stat failed");
 511                 STR_FREE(defct);
 512
 513                 if (HTTP_G->send.not_found_404) {
 514                         http_exit_ex(404, NULL, estrdup("File not found\n"), 0);
 515                 }
 516                 return FAILURE;
 517         }
 518
 519         orig_flags = file->flags;
 520         file->flags |= PHP_STREAM_FLAG_NO_BUFFER;
 521         status = http_send_ex(file, ssb.sb.st_size, SEND_RSRC, no_cache);
 522         file->flags = orig_flags;
 523
 524         if (close_stream) {
 525                 php_stream_close(file);
 526         }
 527
 528         return status;
 529 }
 530 /* }}} */
 531
 532 /* {{{ char *http_guess_content_type(char *magic_file, long magic_mode, void *data, size_t size, http_send_mode mode) */
 533 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)
 534 {
 535         char *ct = NULL;
 536
 537 #ifdef HTTP_HAVE_MAGIC
 538         struct magic_set *magic = NULL;
 539
 540         HTTP_CHECK_OPEN_BASEDIR(magicfile, return NULL);
 541
 542         if (!data_ptr) {
 543                 http_error(HE_WARNING, HTTP_E_INVALID_PARAM, "Supplied payload is empty");
 544         } else if (!(magic = magic_open(magicmode &~ MAGIC_MIME))) {
 545                 http_error_ex(HE_WARNING, HTTP_E_INVALID_PARAM, "Invalid magic mode: %ld", magicmode);
 546         } else if (-1 == magic_load(magic, magicfile)) {
 547                 http_error_ex(HE_WARNING, HTTP_E_RUNTIME, "Failed to load magic database '%s' (%s)", magicfile, magic_error(magic));
 548         } else {
 549                 const char *ctype = NULL;
 550
 551                 magic_setflags(magic, magicmode);
 552
 553                 switch (data_mode) {
 554                         case SEND_RSRC:
 555                         {
 556                                 char *buffer;
 557                                 size_t b_len;
 558
 559                                 b_len = php_stream_copy_to_mem(data_ptr, &buffer, 65536, 0);
 560                                 ctype = magic_buffer(magic, buffer, b_len);
 561                                 efree(buffer);
 562                                 break;
 563                         }
 564
 565                         case SEND_DATA:
 566                                 ctype = magic_buffer(magic, data_ptr, data_len);
 567                                 break;
 568
 569                         default:
 570                                 HTTP_CHECK_OPEN_BASEDIR(data_ptr, magic_close(magic); return NULL);
 571                                 ctype = magic_file(magic, data_ptr);
 572                                 break;
 573                 }
 574
 575                 if (ctype) {
 576                         ct = estrdup(ctype);
 577                 } else {
 578                         http_error_ex(HE_WARNING, HTTP_E_RUNTIME, "Failed to guess Content-Type: %s", magic_error(magic));
 579                 }
 580         }
 581         if (magic) {
 582                 magic_close(magic);
 583         }
 584 #else
 585         http_error(HE_WARNING, HTTP_E_RUNTIME, "Cannot guess Content-Type; libmagic not available");
 586 #endif
 587
 588         return ct;
 589 }
 590 /* }}} */
 591
 592 /*
 593  * Local variables:
 594  * tab-width: 4
 595  * c-basic-offset: 4
 596  * End:
 597  * vim600: sw=4 ts=4 fdm=marker
 598  * vim<600: sw=4 ts=4
 599  */
 600