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