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 #if 0
  39         fprintf(stderr, "Flushing after writing %u bytes\n", (uint) data_len);
  40 #endif
  41
  42 #define HTTP_MSEC(s) (s * 1000)
  43 #define HTTP_USEC(s) (HTTP_MSEC(s) * 1000)
  44 #define HTTP_NSEC(s) (HTTP_USEC(s) * 1000)
  45 #define HTTP_NANOSEC (1000 * 1000 * 1000)
  46 #define HTTP_DIFFSEC (0.001)
  47
  48         if (HTTP_G->send.throttle_delay >= HTTP_DIFFSEC) {
  49 #if defined(PHP_WIN32)
  50                 Sleep((DWORD) HTTP_MSEC(HTTP_G->send.throttle_delay));
  51 #elif defined(HAVE_USLEEP)
  52                 usleep(HTTP_USEC(HTTP_G->send.throttle_delay));
  53 #elif defined(HAVE_NANOSLEEP)
  54                 struct timespec req, rem;
  55
  56                 req.tv_sec = (time_t) HTTP_G->send.throttle_delay;
  57                 req.tv_nsec = HTTP_NSEC(HTTP_G->send.throttle_delay) % HTTP_NANOSEC;
  58
  59                 while (nanosleep(&req, &rem) && (errno == EINTR) && (HTTP_NSEC(rem.tv_sec) + rem.tv_nsec) > HTTP_NSEC(HTTP_DIFFSEC))) {
  60                         req.tv_sec = rem.tv_sec;
  61                         req.tv_nsec = rem.tv_nsec;
  62                 }
  63 #endif
  64         }
  65 }
  66 /* }}} */
  67
  68 /* {{{ http_send_response_start */
  69 #define http_send_response_start(b, cl) _http_send_response_start((b), (cl) TSRMLS_CC)
  70 static inline void _http_send_response_start(void **buffer, size_t content_length TSRMLS_DC)
  71 {
  72         int encoding;
  73
  74         if ((encoding = http_encoding_response_start(content_length))) {
  75 #ifdef HTTP_HAVE_ZLIB
  76                 *buffer = http_encoding_deflate_stream_init(NULL,
  77                         (encoding == HTTP_ENCODING_GZIP) ?
  78                                 HTTP_DEFLATE_TYPE_GZIP : HTTP_DEFLATE_TYPE_ZLIB);
  79 #endif
  80         }
  81 }
  82 /* }}} */
  83
  84 /* {{{ http_send_response_data_plain */
  85 #define http_send_response_data_plain(b, d, dl) _http_send_response_data_plain((b), (d), (dl) TSRMLS_CC)
  86 static inline void _http_send_response_data_plain(void **buffer, const char *data, size_t data_len TSRMLS_DC)
  87 {
  88         if (HTTP_G->send.deflate.encoding) {
  89 #ifdef HTTP_HAVE_ZLIB
  90                 char *encoded;
  91                 size_t encoded_len;
  92                 http_encoding_stream *s = *((http_encoding_stream **) buffer);
  93
  94                 http_encoding_deflate_stream_update(s, data, data_len, &encoded, &encoded_len);
  95                 if (HTTP_G->send.buffer_size) {
  96                         phpstr_chunked_output((phpstr **) &s->storage, encoded, encoded_len, HTTP_G->send.buffer_size, _http_flush, NULL TSRMLS_CC);
  97                 } else {
  98                         http_flush(encoded, encoded_len);
  99                 }
 100                 efree(encoded);
 101 #else
 102                 http_error(HE_ERROR, HTTP_E_RESPONSE, "Attempt to send GZIP response despite being able to do so; please report this bug");
 103 #endif
 104         } else if (HTTP_G->send.buffer_size) {
 105                 phpstr_chunked_output((phpstr **) buffer, data, data_len, HTTP_G->send.buffer_size, _http_flush, NULL TSRMLS_CC);
 106         } else {
 107                 http_flush(data, data_len);
 108         }
 109 }
 110 /* }}} */
 111
 112 /* {{{ http_send_response_data_fetch */
 113 #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)
 114 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)
 115 {
 116         char *buf;
 117         long got, len = end - begin;
 118
 119         switch (mode) {
 120                 case SEND_RSRC:
 121                 {
 122                         php_stream *s = (php_stream *) data;
 123
 124                         if (SUCCESS == php_stream_seek(s, begin, SEEK_SET)) {
 125                                 buf = emalloc(HTTP_SENDBUF_SIZE);
 126
 127                                 while (len > 0) {
 128                                         got = php_stream_read(s, buf, MIN(len, HTTP_SENDBUF_SIZE));
 129                                         http_send_response_data_plain(buffer, buf, got);
 130                                         len -= got;
 131                                 }
 132
 133                                 efree(buf);
 134                         }
 135                         break;
 136                 }
 137
 138                 case SEND_DATA:
 139                 {
 140                         buf = (char *) data + begin;
 141
 142                         while (len > 0) {
 143                                 got = MIN(len, HTTP_SENDBUF_SIZE);
 144                                 http_send_response_data_plain(buffer, buf, got);
 145                                 len -= got;
 146                                 buf += got;
 147                         }
 148                         break;
 149                 }
 150
 151                 EMPTY_SWITCH_DEFAULT_CASE();
 152         }
 153 }
 154 /* }}} */
 155
 156 /* {{{ http_send_response_finish */
 157 #define http_send_response_finish(b) _http_send_response_finish((b) TSRMLS_CC)
 158 static inline void _http_send_response_finish(void **buffer TSRMLS_DC)
 159 {
 160         if (HTTP_G->send.deflate.encoding) {
 161 #ifdef HTTP_HAVE_ZLIB
 162                 char *encoded = NULL;
 163                 size_t encoded_len = 0;
 164                 http_encoding_stream *s = *((http_encoding_stream **) buffer);
 165
 166                 http_encoding_deflate_stream_finish(s, &encoded, &encoded_len);
 167                 if (HTTP_G->send.buffer_size) {
 168                         phpstr_chunked_output((phpstr **) &s->storage, encoded, encoded_len, 0, _http_flush, NULL TSRMLS_CC);
 169                 } else {
 170                         http_flush(encoded, encoded_len);
 171                 }
 172                 http_encoding_deflate_stream_free(&s);
 173                 STR_FREE(encoded);
 174 #else
 175                 http_error(HE_ERROR, HTTP_E_RESPONSE, "Attempt to send GZIP response despite being able to do so; please report this bug");
 176 #endif
 177         } else if (HTTP_G->send.buffer_size) {
 178                 phpstr_chunked_output((phpstr **) buffer, NULL, 0, 0, _http_flush, NULL TSRMLS_CC);
 179         }
 180 }
 181 /* }}} */
 182
 183 /* {{{ */
 184 PHP_MINIT_FUNCTION(http_send)
 185 {
 186         HTTP_LONG_CONSTANT("HTTP_REDIRECT", HTTP_REDIRECT);
 187         HTTP_LONG_CONSTANT("HTTP_REDIRECT_PERM", HTTP_REDIRECT_PERM);
 188         HTTP_LONG_CONSTANT("HTTP_REDIRECT_FOUND", HTTP_REDIRECT_FOUND);
 189         HTTP_LONG_CONSTANT("HTTP_REDIRECT_POST", HTTP_REDIRECT_POST);
 190         HTTP_LONG_CONSTANT("HTTP_REDIRECT_PROXY", HTTP_REDIRECT_PROXY);
 191         HTTP_LONG_CONSTANT("HTTP_REDIRECT_TEMP", HTTP_REDIRECT_TEMP);
 192
 193         return SUCCESS;
 194 }
 195 /* }}} */
 196
 197
 198 /* {{{ STATUS http_send_header(char *, char *, zend_bool) */
 199 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)
 200 {
 201         STATUS ret;
 202         size_t header_len = sizeof(": ") + name_len + value_len + 1;
 203         char *header = emalloc(header_len + 1);
 204
 205         header[header_len] = '\0';
 206         header_len = snprintf(header, header_len, "%s: %s", name, value);
 207         ret = http_send_header_string_ex(header, header_len, replace);
 208         if (sent_header) {
 209                 *sent_header = header;
 210         } else {
 211                 efree(header);
 212         }
 213         return ret;
 214 }
 215 /* }}} */
 216
 217 /* {{{ STATUS http_send_status_header(int, char *) */
 218 PHP_HTTP_API STATUS _http_send_status_header_ex(int status, const char *header, size_t header_len, zend_bool replace TSRMLS_DC)
 219 {
 220         STATUS ret;
 221         sapi_header_line h = {(char *) header, header_len, status};
 222         if (SUCCESS != (ret = sapi_header_op(replace ? SAPI_HEADER_REPLACE : SAPI_HEADER_ADD, &h TSRMLS_CC))) {
 223                 http_error_ex(HE_WARNING, HTTP_E_HEADER, "Could not send header: %s (%d)", header, status);
 224         }
 225         return ret;
 226 }
 227 /* }}} */
 228
 229 /* {{{ STATUS http_send_last_modified(int) */
 230 PHP_HTTP_API STATUS _http_send_last_modified_ex(time_t t, char **sent_header TSRMLS_DC)
 231 {
 232         STATUS ret;
 233         char *date = http_date(t);
 234
 235         if (!date) {
 236                 return FAILURE;
 237         }
 238
 239         ret = http_send_header_ex("Last-Modified", lenof("Last-Modified"), date, strlen(date), 1, sent_header);
 240         efree(date);
 241
 242         /* remember */
 243         HTTP_G->send.last_modified = t;
 244
 245         return ret;
 246 }
 247 /* }}} */
 248
 249 /* {{{ STATUS http_send_etag(char *, size_t) */
 250 PHP_HTTP_API STATUS _http_send_etag_ex(const char *etag, size_t etag_len, char **sent_header TSRMLS_DC)
 251 {
 252         STATUS status;
 253         char *etag_header;
 254         size_t etag_header_len;
 255
 256         if (!etag_len){
 257                 http_error_ex(HE_WARNING, HTTP_E_HEADER, "Attempt to send empty ETag (previous: %s)\n", HTTP_G->send.unquoted_etag);
 258                 return FAILURE;
 259         }
 260
 261         etag_header_len = spprintf(&etag_header, 0, "ETag: \"%s\"", etag);
 262         status = http_send_header_string_ex(etag_header, etag_header_len, 1);
 263
 264         /* remember */
 265         STR_SET(HTTP_G->send.unquoted_etag, estrndup(etag, etag_len));
 266
 267         if (sent_header) {
 268                 *sent_header = etag_header;
 269         } else {
 270                 efree(etag_header);
 271         }
 272
 273         return status;
 274 }
 275 /* }}} */
 276
 277 /* {{{ STATUS http_send_content_type(char *, size_t) */
 278 PHP_HTTP_API STATUS _http_send_content_type(const char *content_type, size_t ct_len TSRMLS_DC)
 279 {
 280         HTTP_CHECK_CONTENT_TYPE(content_type, return FAILURE);
 281
 282         /* remember for multiple ranges */
 283         STR_FREE(HTTP_G->send.content_type);
 284         HTTP_G->send.content_type = estrndup(content_type, ct_len);
 285
 286         return http_send_header_ex("Content-Type", lenof("Content-Type"), content_type, ct_len, 1, NULL);
 287 }
 288 /* }}} */
 289
 290 /* {{{ STATUS http_send_content_disposition(char *, size_t, zend_bool) */
 291 PHP_HTTP_API STATUS _http_send_content_disposition(const char *filename, size_t f_len, zend_bool send_inline TSRMLS_DC)
 292 {
 293         STATUS status;
 294         char *cd_header;
 295
 296         if (send_inline) {
 297                 cd_header = ecalloc(1, sizeof("Content-Disposition: inline; filename=\"\"") + f_len);
 298                 sprintf(cd_header, "Content-Disposition: inline; filename=\"%s\"", filename);
 299         } else {
 300                 cd_header = ecalloc(1, sizeof("Content-Disposition: attachment; filename=\"\"") + f_len);
 301                 sprintf(cd_header, "Content-Disposition: attachment; filename=\"%s\"", filename);
 302         }
 303
 304         status = http_send_header_string(cd_header);
 305         efree(cd_header);
 306         return status;
 307 }
 308 /* }}} */
 309
 310 /* {{{ STATUS http_send(void *, size_t, http_send_mode) */
 311 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)
 312 {
 313         void *s = NULL;
 314         HashTable ranges;
 315         http_range_status range_status;
 316
 317         if (!data_ptr) {
 318                 return FAILURE;
 319         }
 320         if (!data_size) {
 321                 return SUCCESS;
 322         }
 323
 324         /* enable partial dl and resume */
 325         http_send_header_string("Accept-Ranges: bytes");
 326
 327         zend_hash_init(&ranges, 0, NULL, ZVAL_PTR_DTOR, 0);
 328         range_status = http_get_request_ranges(&ranges, data_size);
 329
 330         switch (range_status) {
 331                 case RANGE_ERR:
 332                 {
 333                         zend_hash_destroy(&ranges);
 334                         http_send_status(416);
 335                         return FAILURE;
 336                 }
 337                 case RANGE_OK:
 338                 {
 339                         /* Range Request - only send ranges if entity hasn't changed */
 340                         if (    http_got_server_var("HTTP_IF_RANGE") &&
 341                                         !http_match_etag("HTTP_IF_RANGE", HTTP_G->send.unquoted_etag) &&
 342                                         !http_match_last_modified("HTTP_IF_RANGE", HTTP_G->send.last_modified)) {
 343                                 /* fallthrough to send full entity with 200 Ok */
 344                                 no_cache = 1;
 345                         } else if (     !http_match_etag_ex("HTTP_IF_MATCH", HTTP_G->send.unquoted_etag, 0) ||
 346                                                 !http_match_last_modified_ex("HTTP_IF_UNMODIFIED_SINCE", HTTP_G->send.last_modified, 0) ||
 347                                                 !http_match_last_modified_ex("HTTP_UNLESS_MODIFIED_SINCE", HTTP_G->send.last_modified, 0)) {
 348                                 /* 412 Precondition failed */
 349                                 zend_hash_destroy(&ranges);
 350                                 http_send_status(412);
 351                                 return FAILURE;
 352                         } else if (zend_hash_num_elements(&ranges) == 1) {
 353                                 /* single range */
 354                                 zval **range, **begin, **end;
 355
 356                                 if (    SUCCESS != zend_hash_index_find(&ranges, 0, (void *) &range) ||
 357                                                 SUCCESS != zend_hash_index_find(Z_ARRVAL_PP(range), 0, (void *) &begin) ||
 358                                                 SUCCESS != zend_hash_index_find(Z_ARRVAL_PP(range), 1, (void *) &end)) {
 359                                         /* this should never happen */
 360                                         zend_hash_destroy(&ranges);
 361                                         http_send_status(500);
 362                                         return FAILURE;
 363                                 } else {
 364                                         char range_header_str[256];
 365                                         size_t range_header_len;
 366
 367                                         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);
 368                                         http_send_status_header_ex(206, range_header_str, range_header_len, 1);
 369                                         http_send_response_start(&s, Z_LVAL_PP(end)-Z_LVAL_PP(begin)+1);
 370                                         http_send_response_data_fetch(&s, data_ptr, data_size, data_mode, Z_LVAL_PP(begin), Z_LVAL_PP(end) + 1);
 371                                         http_send_response_finish(&s);
 372                                         zend_hash_destroy(&ranges);
 373                                         return SUCCESS;
 374                                 }
 375                         } else {
 376                                 /* multi range */
 377                                 HashPosition pos;
 378                                 zval **range, **begin, **end;
 379                                 const char *content_type = HTTP_G->send.content_type;
 380                                 char boundary_str[32], range_header_str[256];
 381                                 size_t boundary_len, range_header_len;
 382
 383                                 boundary_len = snprintf(boundary_str, lenof(boundary_str), "%lu%0.9f", (ulong) HTTP_G->request.time, (float) php_combined_lcg(TSRMLS_C));
 384                                 range_header_len = snprintf(range_header_str, lenof(range_header_str), "Content-Type: multipart/byteranges; boundary=%s", boundary_str);
 385
 386                                 http_send_status_header_ex(206, range_header_str, range_header_len, 1);
 387                                 http_send_response_start(&s, 0);
 388
 389                                 if (!content_type) {
 390                                         content_type = "application/x-octetstream";
 391                                 }
 392
 393                                 FOREACH_HASH_VAL(pos, &ranges, range) {
 394                                         if (    SUCCESS == zend_hash_index_find(Z_ARRVAL_PP(range), 0, (void *) &begin) &&
 395                                                         SUCCESS == zend_hash_index_find(Z_ARRVAL_PP(range), 1, (void *) &end)) {
 396                                                 char preface_str[512];
 397                                                 size_t preface_len;
 398
 399 #define HTTP_RANGE_PREFACE \
 400         HTTP_CRLF "--%s" \
 401         HTTP_CRLF "Content-Type: %s" \
 402         HTTP_CRLF "Content-Range: bytes %ld-%ld/%zu" \
 403         HTTP_CRLF HTTP_CRLF
 404
 405                                                 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);
 406                                                 http_send_response_data_plain(&s, preface_str, preface_len);
 407                                                 http_send_response_data_fetch(&s, data_ptr, data_size, data_mode, Z_LVAL_PP(begin), Z_LVAL_PP(end) + 1);
 408                                         }
 409                                 }
 410
 411                                 http_send_response_data_plain(&s, HTTP_CRLF "--", lenof(HTTP_CRLF "--"));
 412                                 http_send_response_data_plain(&s, boundary_str, boundary_len);
 413                                 http_send_response_data_plain(&s, "--", lenof("--"));
 414
 415                                 http_send_response_finish(&s);
 416                                 zend_hash_destroy(&ranges);
 417                                 return SUCCESS;
 418                         }
 419                 }
 420                 case RANGE_NO:
 421                 {
 422                         zend_hash_destroy(&ranges);
 423
 424                         /* send 304 Not Modified if etag matches - DON'T return on ETag generation failure */
 425                         if (!no_cache && (http_interrupt_ob_etaghandler() || (HTTP_G->send.unquoted_etag != NULL))) {
 426                                 char *etag = NULL;
 427
 428                                 if (HTTP_G->send.unquoted_etag) {
 429                                         etag = estrdup(HTTP_G->send.unquoted_etag);
 430                                 }
 431
 432                                 if (etag || (etag = http_etag(data_ptr, data_size, data_mode))) {
 433                                         char *sent_header = NULL;
 434
 435                                         http_send_etag_ex(etag, strlen(etag), &sent_header);
 436                                         if (http_match_etag("HTTP_IF_NONE_MATCH", etag)) {
 437                                                 return http_exit_ex(304, sent_header, NULL, 0);
 438                                         } else {
 439                                                 STR_FREE(sent_header);
 440                                                 /* no caching for Last-Modified if ETags really don't match */
 441                                                 no_cache = http_got_server_var("HTTP_IF_NONE_MATCH");
 442                                         }
 443                                         efree(etag);
 444                                 }
 445                         }
 446
 447                         /* send 304 Not Modified if last modified matches */
 448                         if (!no_cache && http_match_last_modified("HTTP_IF_MODIFIED_SINCE", HTTP_G->send.last_modified)) {
 449                                 char *sent_header = NULL;
 450                                 http_send_last_modified_ex(HTTP_G->send.last_modified, &sent_header);
 451                                 return http_exit_ex(304, sent_header, NULL, 0);
 452                         }
 453
 454                         /* send full response */
 455                         http_send_response_start(&s, data_size);
 456                         http_send_response_data_fetch(&s, data_ptr, data_size, data_mode, 0, data_size);
 457                         http_send_response_finish(&s);
 458                         return SUCCESS;
 459                 }
 460         }
 461         return FAILURE;
 462 }
 463 /* }}} */
 464
 465 /* {{{ STATUS http_send_stream(php_stream *) */
 466 PHP_HTTP_API STATUS _http_send_stream_ex(php_stream *file, zend_bool close_stream, zend_bool no_cache TSRMLS_DC)
 467 {
 468         STATUS status;
 469         php_stream_statbuf ssb;
 470
 471         if ((!file) || php_stream_stat(file, &ssb)) {
 472                 char *defct = sapi_get_default_content_type(TSRMLS_C);
 473
 474                 http_send_content_type(defct, strlen(defct));
 475                 http_send_header_string("Content-Disposition:");
 476                 http_error(HE_WARNING, HTTP_E_RESPONSE, "File not found; stat failed");
 477                 STR_FREE(defct);
 478
 479                 if (HTTP_G->send.not_found_404) {
 480                         http_exit_ex(404, NULL, estrdup("File not found\n"), 0);
 481                 }
 482                 return FAILURE;
 483         }
 484
 485         status = http_send_ex(file, ssb.sb.st_size, SEND_RSRC, no_cache);
 486
 487         if (close_stream) {
 488                 php_stream_close(file);
 489         }
 490
 491         return status;
 492 }
 493 /* }}} */
 494
 495 /* {{{ char *http_guess_content_type(char *magic_file, long magic_mode, void *data, size_t size, http_send_mode mode) */
 496 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)
 497 {
 498         char *ct = NULL;
 499
 500 #ifdef HTTP_HAVE_MAGIC
 501         struct magic_set *magic = NULL;
 502
 503         HTTP_CHECK_OPEN_BASEDIR(magicfile, return NULL);
 504
 505         if (!data_ptr) {
 506                 http_error(HE_WARNING, HTTP_E_INVALID_PARAM, "Supplied payload is empty");
 507         } else if (!(magic = magic_open(magicmode &~ MAGIC_MIME))) {
 508                 http_error_ex(HE_WARNING, HTTP_E_INVALID_PARAM, "Invalid magic mode: %ld", magicmode);
 509         } else if (-1 == magic_load(magic, magicfile)) {
 510                 http_error_ex(HE_WARNING, HTTP_E_RUNTIME, "Failed to load magic database '%s' (%s)", magicfile, magic_error(magic));
 511         } else {
 512                 const char *ctype = NULL;
 513
 514                 magic_setflags(magic, magicmode);
 515
 516                 switch (data_mode) {
 517                         case SEND_RSRC:
 518                         {
 519                                 char *buffer;
 520                                 size_t b_len;
 521
 522                                 b_len = php_stream_copy_to_mem(data_ptr, &buffer, 65536, 0);
 523                                 ctype = magic_buffer(magic, buffer, b_len);
 524                                 efree(buffer);
 525                                 break;
 526                         }
 527
 528                         case SEND_DATA:
 529                                 ctype = magic_buffer(magic, data_ptr, data_len);
 530                                 break;
 531
 532                         default:
 533                                 HTTP_CHECK_OPEN_BASEDIR(data_ptr, magic_close(magic); return NULL);
 534                                 ctype = magic_file(magic, data_ptr);
 535                                 break;
 536                 }
 537
 538                 if (ctype) {
 539                         ct = estrdup(ctype);
 540                 } else {
 541                         http_error_ex(HE_WARNING, HTTP_E_RUNTIME, "Failed to guess Content-Type: %s", magic_error(magic));
 542                 }
 543         }
 544         if (magic) {
 545                 magic_close(magic);
 546         }
 547 #else
 548         http_error(HE_WARNING, HTTP_E_RUNTIME, "Cannot guess Content-Type; libmagic not available");
 549 #endif
 550
 551         return ct;
 552 }
 553 /* }}} */
 554
 555 /*
 556  * Local variables:
 557  * tab-width: 4
 558  * c-basic-offset: 4
 559  * End:
 560  * vim600: sw=4 ts=4 fdm=marker
 561  * vim<600: sw=4 ts=4
 562  */
 563