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) 2004-2006, 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 #include "ext/standard/php_lcg.h"
  22
  23 #include "php_http_api.h"
  24 #include "php_http_cache_api.h"
  25 #include "php_http_date_api.h"
  26 #include "php_http_encoding_api.h"
  27 #include "php_http_headers_api.h"
  28 #include "php_http_send_api.h"
  29
  30 #define http_flush(d, l) _http_flush(NULL, (d), (l) TSRMLS_CC)
  31 /* {{{ static inline void http_flush() */
  32 static inline void _http_flush(void *nothing, const char *data, size_t data_len TSRMLS_DC)
  33 {
  34         PHPWRITE(data, data_len);
  35         php_end_ob_buffer(1, 1 TSRMLS_CC);
  36         sapi_flush(TSRMLS_C);
  37
  38 #define HTTP_MSEC(s) (s * 1000)
  39 #define HTTP_USEC(s) (HTTP_MSEC(s) * 1000)
  40 #define HTTP_NSEC(s) (HTTP_USEC(s) * 1000)
  41 #define HTTP_NANOSEC (1000 * 1000 * 1000)
  42 #define HTTP_DIFFSEC (0.001)
  43
  44         if (HTTP_G->send.throttle_delay >= HTTP_DIFFSEC) {
  45 #if defined(PHP_WIN32)
  46                 Sleep((DWORD) HTTP_MSEC(HTTP_G->send.throttle_delay));
  47 #elif defined(HAVE_USLEEP)
  48                 usleep(HTTP_USEC(HTTP_G->send.throttle_delay));
  49 #elif defined(HAVE_NANOSLEEP)
  50                 struct timespec req, rem;
  51
  52                 req.tv_sec = (time_t) HTTP_G->send.throttle_delay;
  53                 req.tv_nsec = HTTP_NSEC(HTTP_G->send.throttle_delay) % HTTP_NANOSEC;
  54
  55                 while (nanosleep(&req, &rem) && (errno == EINTR) && (HTTP_NSEC(rem.tv_sec) + rem.tv_nsec) > HTTP_NSEC(HTTP_DIFFSEC))) {
  56                         req.tv_sec = rem.tv_sec;
  57                         req.tv_nsec = rem.tv_nsec;
  58                 }
  59 #endif
  60         }
  61 }
  62 /* }}} */
  63
  64 /* {{{ http_send_response_start */
  65 #define http_send_response_start(b, cl) _http_send_response_start((b), (cl) TSRMLS_CC)
  66 static inline void _http_send_response_start(void **buffer, size_t content_length TSRMLS_DC)
  67 {
  68         int encoding;
  69
  70         if ((encoding = http_encoding_response_start(content_length))) {
  71 #ifdef HTTP_HAVE_ZLIB
  72                 *buffer = http_encoding_deflate_stream_init(NULL,
  73                         (encoding == HTTP_ENCODING_GZIP) ?
  74                                 HTTP_DEFLATE_TYPE_GZIP : HTTP_DEFLATE_TYPE_ZLIB);
  75 #endif
  76         }
  77 }
  78 /* }}} */
  79
  80 /* {{{ http_send_response_data_plain */
  81 #define http_send_response_data_plain(b, d, dl) _http_send_response_data_plain((b), (d), (dl) TSRMLS_CC)
  82 static inline void _http_send_response_data_plain(void **buffer, const char *data, size_t data_len TSRMLS_DC)
  83 {
  84         if (HTTP_G->send.deflate.encoding) {
  85 #ifdef HTTP_HAVE_ZLIB
  86                 char *encoded;
  87                 size_t encoded_len;
  88                 http_encoding_stream *s = *((http_encoding_stream **) buffer);
  89
  90                 http_encoding_deflate_stream_update(s, data, data_len, &encoded, &encoded_len);
  91                 phpstr_chunked_output((phpstr **) &s->storage, encoded, encoded_len, HTTP_G->send.buffer_size, _http_flush, NULL TSRMLS_CC);
  92                 efree(encoded);
  93 #else
  94                 http_error(HE_ERROR, HTTP_E_RESPONSE, "Attempt to send GZIP response despite being able to do so; please report this bug");
  95 #endif
  96         } else {
  97                 phpstr_chunked_output((phpstr **) buffer, data, data_len, HTTP_G->send.buffer_size, _http_flush, NULL TSRMLS_CC);
  98         }
  99 }
 100 /* }}} */
 101
 102 /* {{{ http_send_response_data_fetch */
 103 #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)
 104 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)
 105 {
 106         char *buf;
 107         long got, len = end - begin;
 108
 109         switch (mode) {
 110                 case SEND_RSRC:
 111                 {
 112                         php_stream *s = (php_stream *) data;
 113
 114                         if (SUCCESS == php_stream_seek(s, begin, SEEK_SET)) {
 115                                 buf = emalloc(HTTP_SENDBUF_SIZE);
 116
 117                                 while (len > 0) {
 118                                         got = php_stream_read(s, buf, MIN(len, HTTP_SENDBUF_SIZE));
 119                                         http_send_response_data_plain(buffer, buf, got);
 120                                         len -= got;
 121                                 }
 122
 123                                 efree(buf);
 124                         }
 125                         break;
 126                 }
 127
 128                 case SEND_DATA:
 129                 {
 130                         buf = (char *) data + begin;
 131
 132                         while (len > 0) {
 133                                 got = MIN(len, HTTP_SENDBUF_SIZE);
 134                                 http_send_response_data_plain(buffer, buf, got);
 135                                 len -= got;
 136                                 buf += got;
 137                         }
 138                         break;
 139                 }
 140
 141                 EMPTY_SWITCH_DEFAULT_CASE();
 142         }
 143 }
 144 /* }}} */
 145
 146 /* {{{ http_send_response_finish */
 147 #define http_send_response_finish(b) _http_send_response_finish((b) TSRMLS_CC)
 148 static inline void _http_send_response_finish(void **buffer TSRMLS_DC)
 149 {
 150         if (HTTP_G->send.deflate.encoding) {
 151 #ifdef HTTP_HAVE_ZLIB
 152                 char *encoded = NULL;
 153                 size_t encoded_len = 0;
 154                 http_encoding_stream *s = *((http_encoding_stream **) buffer);
 155
 156                 http_encoding_deflate_stream_finish(s, &encoded, &encoded_len);
 157                 phpstr_chunked_output((phpstr **) &s->storage, encoded, encoded_len, 0, _http_flush, NULL TSRMLS_CC);
 158                 http_encoding_deflate_stream_free(&s);
 159                 STR_FREE(encoded);
 160 #else
 161                 http_error(HE_ERROR, HTTP_E_RESPONSE, "Attempt to send GZIP response despite being able to do so; please report this bug");
 162 #endif
 163         } else {
 164                 phpstr_chunked_output((phpstr **) buffer, NULL, 0, 0, _http_flush, NULL TSRMLS_CC);
 165         }
 166 }
 167 /* }}} */
 168
 169 /* {{{ */
 170 PHP_MINIT_FUNCTION(http_send)
 171 {
 172         HTTP_LONG_CONSTANT("HTTP_REDIRECT", HTTP_REDIRECT);
 173         HTTP_LONG_CONSTANT("HTTP_REDIRECT_PERM", HTTP_REDIRECT_PERM);
 174         HTTP_LONG_CONSTANT("HTTP_REDIRECT_FOUND", HTTP_REDIRECT_FOUND);
 175         HTTP_LONG_CONSTANT("HTTP_REDIRECT_POST", HTTP_REDIRECT_POST);
 176         HTTP_LONG_CONSTANT("HTTP_REDIRECT_PROXY", HTTP_REDIRECT_PROXY);
 177         HTTP_LONG_CONSTANT("HTTP_REDIRECT_TEMP", HTTP_REDIRECT_TEMP);
 178
 179         return SUCCESS;
 180 }
 181 /* }}} */
 182
 183
 184 /* {{{ STATUS http_send_header(char *, char *, zend_bool) */
 185 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)
 186 {
 187         STATUS ret;
 188         size_t header_len = sizeof(": ") + name_len + value_len + 1;
 189         char *header = emalloc(header_len + 1);
 190
 191         header[header_len] = '\0';
 192         header_len = snprintf(header, header_len, "%s: %s", name, value);
 193         ret = http_send_header_string_ex(header, header_len, replace);
 194         if (sent_header) {
 195                 *sent_header = header;
 196         } else {
 197                 efree(header);
 198         }
 199         return ret;
 200 }
 201 /* }}} */
 202
 203 /* {{{ STATUS http_send_status_header(int, char *) */
 204 PHP_HTTP_API STATUS _http_send_status_header_ex(int status, const char *header, size_t header_len, zend_bool replace TSRMLS_DC)
 205 {
 206         STATUS ret;
 207         sapi_header_line h = {(char *) header, header_len, status};
 208         if (SUCCESS != (ret = sapi_header_op(replace ? SAPI_HEADER_REPLACE : SAPI_HEADER_ADD, &h TSRMLS_CC))) {
 209                 http_error_ex(HE_WARNING, HTTP_E_HEADER, "Could not send header: %s (%d)", header, status);
 210         }
 211         return ret;
 212 }
 213 /* }}} */
 214
 215 /* {{{ STATUS http_send_last_modified(int) */
 216 PHP_HTTP_API STATUS _http_send_last_modified_ex(time_t t, char **sent_header TSRMLS_DC)
 217 {
 218         STATUS ret;
 219         char *date = http_date(t);
 220
 221         if (!date) {
 222                 return FAILURE;
 223         }
 224
 225         ret = http_send_header_ex("Last-Modified", lenof("Last-Modified"), date, strlen(date), 1, sent_header);
 226         efree(date);
 227
 228         /* remember */
 229         HTTP_G->send.last_modified = t;
 230
 231         return ret;
 232 }
 233 /* }}} */
 234
 235 /* {{{ STATUS http_send_etag(char *, size_t) */
 236 PHP_HTTP_API STATUS _http_send_etag_ex(const char *etag, size_t etag_len, char **sent_header TSRMLS_DC)
 237 {
 238         STATUS status;
 239         char *etag_header;
 240         size_t etag_header_len;
 241
 242         if (!etag_len){
 243                 http_error_ex(HE_WARNING, HTTP_E_HEADER, "Attempt to send empty ETag (previous: %s)\n", HTTP_G->send.unquoted_etag);
 244                 return FAILURE;
 245         }
 246
 247         etag_header_len = spprintf(&etag_header, 0, "ETag: \"%s\"", etag);
 248         status = http_send_header_string_ex(etag_header, etag_header_len, 1);
 249
 250         /* remember */
 251         STR_SET(HTTP_G->send.unquoted_etag, estrndup(etag, etag_len));
 252
 253         if (sent_header) {
 254                 *sent_header = etag_header;
 255         } else {
 256                 efree(etag_header);
 257         }
 258
 259         return status;
 260 }
 261 /* }}} */
 262
 263 /* {{{ STATUS http_send_content_type(char *, size_t) */
 264 PHP_HTTP_API STATUS _http_send_content_type(const char *content_type, size_t ct_len TSRMLS_DC)
 265 {
 266         HTTP_CHECK_CONTENT_TYPE(content_type, return FAILURE);
 267
 268         /* remember for multiple ranges */
 269         STR_FREE(HTTP_G->send.content_type);
 270         HTTP_G->send.content_type = estrndup(content_type, ct_len);
 271
 272         return http_send_header_ex("Content-Type", lenof("Content-Type"), content_type, ct_len, 1, NULL);
 273 }
 274 /* }}} */
 275
 276 /* {{{ STATUS http_send_content_disposition(char *, size_t, zend_bool) */
 277 PHP_HTTP_API STATUS _http_send_content_disposition(const char *filename, size_t f_len, zend_bool send_inline TSRMLS_DC)
 278 {
 279         STATUS status;
 280         char *cd_header;
 281
 282         if (send_inline) {
 283                 cd_header = ecalloc(1, sizeof("Content-Disposition: inline; filename=\"\"") + f_len);
 284                 sprintf(cd_header, "Content-Disposition: inline; filename=\"%s\"", filename);
 285         } else {
 286                 cd_header = ecalloc(1, sizeof("Content-Disposition: attachment; filename=\"\"") + f_len);
 287                 sprintf(cd_header, "Content-Disposition: attachment; filename=\"%s\"", filename);
 288         }
 289
 290         status = http_send_header_string(cd_header);
 291         efree(cd_header);
 292         return status;
 293 }
 294 /* }}} */
 295
 296 /* {{{ STATUS http_send(void *, size_t, http_send_mode) */
 297 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)
 298 {
 299         void *s = NULL;
 300         HashTable ranges;
 301         http_range_status range_status;
 302
 303         if (!data_ptr) {
 304                 return FAILURE;
 305         }
 306         if (!data_size) {
 307                 return SUCCESS;
 308         }
 309
 310         /* enable partial dl and resume */
 311         http_send_header_string("Accept-Ranges: bytes");
 312
 313         zend_hash_init(&ranges, 0, NULL, ZVAL_PTR_DTOR, 0);
 314         range_status = http_get_request_ranges(&ranges, data_size);
 315
 316         switch (range_status) {
 317                 case RANGE_ERR:
 318                 {
 319                         zend_hash_destroy(&ranges);
 320                         http_send_status(416);
 321                         return FAILURE;
 322                 }
 323                 case RANGE_OK:
 324                 {
 325                         /* Range Request - only send ranges if entity hasn't changed */
 326                         if (    http_got_server_var("HTTP_IF_RANGE") &&
 327                                         !http_match_etag("HTTP_IF_RANGE", HTTP_G->send.unquoted_etag) &&
 328                                         !http_match_last_modified("HTTP_IF_RANGE", HTTP_G->send.last_modified)) {
 329                                 /* fallthrough to send full entity with 200 Ok */
 330                                 no_cache = 1;
 331                         } else if (     !http_match_etag_ex("HTTP_IF_MATCH", HTTP_G->send.unquoted_etag, 0) ||
 332                                                 !http_match_last_modified_ex("HTTP_IF_UNMODIFIED_SINCE", HTTP_G->send.last_modified, 0) ||
 333                                                 !http_match_last_modified_ex("HTTP_UNLESS_MODIFIED_SINCE", HTTP_G->send.last_modified, 0)) {
 334                                 /* 412 Precondition failed */
 335                                 zend_hash_destroy(&ranges);
 336                                 http_send_status(412);
 337                                 return FAILURE;
 338                         } else if (zend_hash_num_elements(&ranges) == 1) {
 339                                 /* single range */
 340                                 zval **range, **begin, **end;
 341
 342                                 if (    SUCCESS != zend_hash_index_find(&ranges, 0, (void *) &range) ||
 343                                                 SUCCESS != zend_hash_index_find(Z_ARRVAL_PP(range), 0, (void *) &begin) ||
 344                                                 SUCCESS != zend_hash_index_find(Z_ARRVAL_PP(range), 1, (void *) &end)) {
 345                                         /* this should never happen */
 346                                         zend_hash_destroy(&ranges);
 347                                         http_send_status(500);
 348                                         return FAILURE;
 349                                 } else {
 350                                         char range_header_str[256];
 351                                         size_t range_header_len;
 352
 353                                         range_header_len = snprintf(range_header_str, lenof(range_header_str), "Content-Range: bytes %ld-%ld/%zu", Z_LVAL_PP(begin), Z_LVAL_PP(end), data_size);
 354                                         http_send_status_header_ex(206, range_header_str, range_header_len, 1);
 355                                         http_send_response_start(&s, Z_LVAL_PP(end)-Z_LVAL_PP(begin)+1);
 356                                         http_send_response_data_fetch(&s, data_ptr, data_size, data_mode, Z_LVAL_PP(begin), Z_LVAL_PP(end) + 1);
 357                                         http_send_response_finish(&s);
 358                                         zend_hash_destroy(&ranges);
 359                                         return SUCCESS;
 360                                 }
 361                         } else {
 362                                 /* multi range */
 363                                 HashPosition pos;
 364                                 zval **range, **begin, **end;
 365                                 const char *content_type = HTTP_G->send.content_type;
 366                                 char boundary_str[32], range_header_str[256];
 367                                 size_t boundary_len, range_header_len;
 368
 369                                 boundary_len = snprintf(boundary_str, lenof(boundary_str), "%lu%0.9f", (ulong) HTTP_G->request.time, (float) php_combined_lcg(TSRMLS_C));
 370                                 range_header_len = snprintf(range_header_str, lenof(range_header_str), "Content-Type: multipart/byteranges; boundary=%s", boundary_str);
 371
 372                                 http_send_status_header_ex(206, range_header_str, range_header_len, 1);
 373                                 http_send_response_start(&s, 0);
 374
 375                                 if (!content_type) {
 376                                         content_type = "application/x-octetstream";
 377                                 }
 378
 379                                 FOREACH_HASH_VAL(pos, &ranges, range) {
 380                                         if (    SUCCESS == zend_hash_index_find(Z_ARRVAL_PP(range), 0, (void *) &begin) &&
 381                                                         SUCCESS == zend_hash_index_find(Z_ARRVAL_PP(range), 1, (void *) &end)) {
 382                                                 char preface_str[512];
 383                                                 size_t preface_len;
 384
 385 #define HTTP_RANGE_PREFACE \
 386         HTTP_CRLF "--%s" \
 387         HTTP_CRLF "Content-Type: %s" \
 388         HTTP_CRLF "Content-Range: bytes %ld-%ld/%zu" \
 389         HTTP_CRLF HTTP_CRLF
 390
 391                                                 preface_len = snprintf(preface_str, lenof(preface_str), HTTP_RANGE_PREFACE, boundary_str, content_type, Z_LVAL_PP(begin), Z_LVAL_PP(end), data_size);
 392                                                 http_send_response_data_plain(&s, preface_str, preface_len);
 393                                                 http_send_response_data_fetch(&s, data_ptr, data_size, data_mode, Z_LVAL_PP(begin), Z_LVAL_PP(end) + 1);
 394                                         }
 395                                 }
 396
 397                                 http_send_response_data_plain(&s, HTTP_CRLF "--", lenof(HTTP_CRLF "--"));
 398                                 http_send_response_data_plain(&s, boundary_str, boundary_len);
 399                                 http_send_response_data_plain(&s, "--", lenof("--"));
 400
 401                                 http_send_response_finish(&s);
 402                                 zend_hash_destroy(&ranges);
 403                                 return SUCCESS;
 404                         }
 405                 }
 406                 case RANGE_NO:
 407                 {
 408                         zend_hash_destroy(&ranges);
 409
 410                         /* send 304 Not Modified if etag matches - DON'T return on ETag generation failure */
 411                         if (!no_cache && (http_interrupt_ob_etaghandler() || (HTTP_G->send.unquoted_etag != NULL))) {
 412                                 char *etag = NULL;
 413
 414                                 if (HTTP_G->send.unquoted_etag) {
 415                                         etag = estrdup(HTTP_G->send.unquoted_etag);
 416                                 }
 417
 418                                 if (etag || (etag = http_etag(data_ptr, data_size, data_mode))) {
 419                                         char *sent_header = NULL;
 420
 421                                         http_send_etag_ex(etag, strlen(etag), &sent_header);
 422                                         if (http_match_etag("HTTP_IF_NONE_MATCH", etag)) {
 423                                                 return http_exit_ex(304, sent_header, NULL, 0);
 424                                         } else {
 425                                                 STR_FREE(sent_header);
 426                                                 /* no caching for Last-Modified if ETags really don't match */
 427                                                 no_cache = http_got_server_var("HTTP_IF_NONE_MATCH");
 428                                         }
 429                                         efree(etag);
 430                                 }
 431                         }
 432
 433                         /* send 304 Not Modified if last modified matches */
 434                         if (!no_cache && http_match_last_modified("HTTP_IF_MODIFIED_SINCE", HTTP_G->send.last_modified)) {
 435                                 char *sent_header = NULL;
 436                                 http_send_last_modified_ex(HTTP_G->send.last_modified, &sent_header);
 437                                 return http_exit_ex(304, sent_header, NULL, 0);
 438                         }
 439
 440                         /* send full response */
 441                         http_send_response_start(&s, data_size);
 442                         http_send_response_data_fetch(&s, data_ptr, data_size, data_mode, 0, data_size);
 443                         http_send_response_finish(&s);
 444                         return SUCCESS;
 445                 }
 446         }
 447         return FAILURE;
 448 }
 449 /* }}} */
 450
 451 /* {{{ STATUS http_send_stream(php_stream *) */
 452 PHP_HTTP_API STATUS _http_send_stream_ex(php_stream *file, zend_bool close_stream, zend_bool no_cache TSRMLS_DC)
 453 {
 454         STATUS status;
 455         php_stream_statbuf ssb;
 456
 457         if ((!file) || php_stream_stat(file, &ssb)) {
 458                 char *defct = sapi_get_default_content_type(TSRMLS_C);
 459
 460                 http_send_content_type(defct, strlen(defct));
 461                 http_send_header_string("Content-Disposition:");
 462                 http_error(HE_WARNING, HTTP_E_RESPONSE, "File not found; stat failed");
 463                 STR_FREE(defct);
 464
 465                 if (HTTP_G->send.not_found_404) {
 466                         http_exit_ex(404, NULL, estrdup("File not found\n"), 0);
 467                 }
 468                 return FAILURE;
 469         }
 470
 471         status = http_send_ex(file, ssb.sb.st_size, SEND_RSRC, no_cache);
 472
 473         if (close_stream) {
 474                 php_stream_close(file);
 475         }
 476
 477         return status;
 478 }
 479 /* }}} */
 480
 481 /* {{{ char *http_guess_content_type(char *magic_file, long magic_mode, void *data, size_t size, http_send_mode mode) */
 482 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)
 483 {
 484         char *ct = NULL;
 485
 486 #ifdef HTTP_HAVE_MAGIC
 487         struct magic_set *magic;
 488
 489         HTTP_CHECK_OPEN_BASEDIR(magicfile, return NULL);
 490
 491         /*      magic_load() fails if MAGIC_MIME is set because it
 492                 cowardly adds .mime to the file name */
 493         magic = magic_open(magicmode &~ MAGIC_MIME);
 494
 495         if (!magic) {
 496                 http_error_ex(HE_WARNING, HTTP_E_INVALID_PARAM, "Invalid magic mode: %ld", magicmode);
 497         } else if (-1 == magic_load(magic, magicfile)) {
 498                 http_error_ex(HE_WARNING, HTTP_E_RUNTIME, "Failed to load magic database '%s' (%s)", magicfile, magic_error(magic));
 499         } else {
 500                 const char *ctype = NULL;
 501
 502                 magic_setflags(magic, magicmode);
 503
 504                 switch (data_mode) {
 505                         case SEND_RSRC:
 506                         {
 507                                 char *buffer;
 508                                 size_t b_len;
 509
 510                                 b_len = php_stream_copy_to_mem(data_ptr, &buffer, 65536, 0);
 511                                 ctype = magic_buffer(magic, buffer, b_len);
 512                                 efree(buffer);
 513                                 break;
 514                         }
 515
 516                         case SEND_DATA:
 517                                 ctype = magic_buffer(magic, data_ptr, data_len);
 518                                 break;
 519
 520                         default:
 521                                 HTTP_CHECK_OPEN_BASEDIR(data_ptr, magic_close(magic); return NULL);
 522                                 ctype = magic_file(magic, data_ptr);
 523                                 break;
 524                 }
 525
 526                 if (ctype) {
 527                         ct = estrdup(ctype);
 528                 } else {
 529                         http_error_ex(HE_WARNING, HTTP_E_RUNTIME, "Failed to guess Content-Type: %s", magic_error(magic));
 530                 }
 531         }
 532         if (magic) {
 533                 magic_close(magic);
 534         }
 535 #else
 536         http_error(HE_WARNING, HTTP_E_RUNTIME, "Cannot guess Content-Type; libmagic not available");
 537 #endif
 538
 539         return ct;
 540 }
 541 /* }}} */
 542
 543 /*
 544  * Local variables:
 545  * tab-width: 4
 546  * c-basic-offset: 4
 547  * End:
 548  * vim600: sw=4 ts=4 fdm=marker
 549  * vim<600: sw=4 ts=4
 550  */
 551