2 +----------------------------------------------------------------------+
4 +----------------------------------------------------------------------+
5 | This source file is subject to version 3.0 of the PHP license, that |
6 | is bundled with this package in the file LICENSE, and is available |
7 | through the world-wide-web at http://www.php.net/license/3_0.txt. |
8 | If you did not receive a copy of the PHP license and are unable to |
9 | obtain it through the world-wide-web, please send a note to |
10 | license@php.net so we can mail you a copy immediately. |
11 +----------------------------------------------------------------------+
12 | Copyright (c) 2004-2005 Michael Wallner <mike@php.net> |
13 +----------------------------------------------------------------------+
23 #include "php_streams.h"
24 #include "ext/standard/php_lcg.h"
28 #include "php_http_std_defs.h"
29 #include "php_http_api.h"
30 #include "php_http_date_api.h"
31 #include "php_http_send_api.h"
32 #include "php_http_headers_api.h"
33 #include "php_http_date_api.h"
34 #include "php_http_cache_api.h"
36 ZEND_EXTERN_MODULE_GLOBALS(http
);
38 #define http_flush() _http_flush(TSRMLS_C)
39 /* {{{ static inline void http_flush() */
40 static inline void _http_flush(TSRMLS_D
)
42 php_end_ob_buffer(1, 1 TSRMLS_CC
);
47 #define http_sleep() _http_sleep(TSRMLS_C)
48 /* {{{ static inline void http_sleep() */
49 static inline void _http_sleep(TSRMLS_D
)
51 if (HTTP_G(send
).throttle_delay
>= 0.001) {
52 #if defined(PHP_WIN32)
53 Sleep((DWORD
) (HTTP_G(send
).throttle_delay
* 1000));
54 #elif defined(HAVE_USLEEP)
55 usleep(HTTP_G(send
).throttle_delay
* 1000000);
56 #elif defined(HAVE_NANOSLEEP)
57 struct timespec req
, rem
;
59 req
.tv_sec
= (time_t) HTTP_G(send
).throttle_delay
;
60 req
.tv_nsec
= (HTTP_G(send
).throttle_delay
* 1000000000) % 1000000000;
62 while (nanosleep(&req
, &rem
) && (errno
== EINTR
) && (rem
.tv_nsec
> 1000000)) {
63 req
.tv_sec
= rem
.tv_sec
;
64 req
.tv_nsec
= rem
.tv_nsec
;
71 #define HTTP_CHUNK_AVAIL(len) ((len -= HTTP_G(send).buffer_size) >= 0)
72 #define HTTP_CHUNK_WRITE(data, l, dofree, dosleep) \
74 long size = (long) l; \
76 if ((1 > size) || (size - PHPWRITE(data, size))) { \
89 #define http_send_chunk(d, b, e, m) _http_send_chunk((d), (b), (e), (m) TSRMLS_CC)
90 /* {{{ static STATUS http_send_chunk(const void *, size_t, size_t, http_send_mode) */
91 static STATUS
_http_send_chunk(const void *data
, size_t begin
, size_t end
, http_send_mode mode TSRMLS_DC
)
93 long len
= end
- begin
;
100 php_stream
*s
= (php_stream
*) data
;
102 if (php_stream_seek(s
, begin
, SEEK_SET
)) {
106 buf
= emalloc(HTTP_G(send
).buffer_size
);
108 while (HTTP_CHUNK_AVAIL(len
)) {
109 HTTP_CHUNK_WRITE(buf
, php_stream_read(s
, buf
, HTTP_G(send
).buffer_size
), 1, 1);
112 /* read & write left over */
114 HTTP_CHUNK_WRITE(buf
, php_stream_read(s
, buf
, HTTP_G(send
).buffer_size
+ len
), 1, 0);
123 char *s
= (char *) data
+ begin
;
125 while (HTTP_CHUNK_AVAIL(len
)) {
126 HTTP_CHUNK_WRITE(s
, HTTP_G(send
).buffer_size
, 0, 1);
127 s
+= HTTP_G(send
).buffer_size
;
130 /* write left over */
132 HTTP_CHUNK_WRITE(s
, HTTP_G(send
).buffer_size
+ len
, 0, 0);
146 /* {{{ STATUS http_send_status_header(int, char *) */
147 PHP_HTTP_API STATUS
_http_send_status_header_ex(int status
, const char *header
, zend_bool replace TSRMLS_DC
)
150 sapi_header_line h
= {(char *) header
, header
? strlen(header
) : 0, status
};
151 if (SUCCESS
!= (ret
= sapi_header_op(replace
? SAPI_HEADER_REPLACE
: SAPI_HEADER_ADD
, &h TSRMLS_CC
))) {
152 http_error_ex(E_WARNING
, HTTP_E_HEADER
, "Could not send header: %s (%d)", header
, status
);
158 /* {{{ STATUS http_send_last_modified(int) */
159 PHP_HTTP_API STATUS
_http_send_last_modified(time_t t TSRMLS_DC
)
162 if (date
= http_date(t
)) {
163 char modified
[96] = "Last-Modified: ";
164 strcat(modified
, date
);
168 HTTP_G(send
).last_modified
= t
;
170 return http_send_header(modified
);
176 /* {{{ STATUS http_send_etag(char *, size_t) */
177 PHP_HTTP_API STATUS
_http_send_etag(const char *etag
, size_t etag_len TSRMLS_DC
)
183 http_error_ex(E_WARNING
, HTTP_E_HEADER
, "Attempt to send empty ETag (previous: %s)\n", HTTP_G(send
).unquoted_etag
);
188 STR_FREE(HTTP_G(send
).unquoted_etag
);
189 HTTP_G(send
).unquoted_etag
= estrdup(etag
);
191 etag_header
= ecalloc(1, sizeof("ETag: \"\"") + etag_len
);
192 sprintf(etag_header
, "ETag: \"%s\"", etag
);
193 status
= http_send_header(etag_header
);
199 /* {{{ STATUS http_send_cache_control(char *, size_t) */
200 PHP_HTTP_API STATUS
_http_send_cache_control(const char *cache_control
, size_t cc_len TSRMLS_DC
)
203 char *cc_header
= ecalloc(1, sizeof("Cache-Control: ") + cc_len
);
205 sprintf(cc_header
, "Cache-Control: %s", cache_control
);
206 status
= http_send_header(cc_header
);
212 /* {{{ STATUS http_send_content_type(char *, size_t) */
213 PHP_HTTP_API STATUS
_http_send_content_type(const char *content_type
, size_t ct_len TSRMLS_DC
)
218 if (!strchr(content_type
, '/')) {
219 http_error_ex(E_WARNING
, HTTP_E_PARAM
, "Content-Type '%s' doesn't seem to consist of a primary and a secondary part", content_type
);
223 /* remember for multiple ranges */
224 STR_FREE(HTTP_G(send
).content_type
);
225 HTTP_G(send
).content_type
= estrndup(content_type
, ct_len
);
227 ct_header
= ecalloc(1, sizeof("Content-Type: ") + ct_len
);
228 sprintf(ct_header
, "Content-Type: %s", content_type
);
229 status
= http_send_header(ct_header
);
235 /* {{{ STATUS http_send_content_disposition(char *, size_t, zend_bool) */
236 PHP_HTTP_API STATUS
_http_send_content_disposition(const char *filename
, size_t f_len
, zend_bool send_inline TSRMLS_DC
)
242 cd_header
= ecalloc(1, sizeof("Content-Disposition: inline; filename=\"\"") + f_len
);
243 sprintf(cd_header
, "Content-Disposition: inline; filename=\"%s\"", filename
);
245 cd_header
= ecalloc(1, sizeof("Content-Disposition: attachment; filename=\"\"") + f_len
);
246 sprintf(cd_header
, "Content-Disposition: attachment; filename=\"%s\"", filename
);
249 status
= http_send_header(cd_header
);
255 /* {{{ STATUS http_send_ranges(HashTable *, void *, size_t, http_send_mode) */
256 PHP_HTTP_API STATUS
_http_send_ranges(HashTable
*ranges
, const void *data
, size_t size
, http_send_mode mode TSRMLS_DC
)
262 if (zend_hash_num_elements(ranges
) == 1) {
263 char range_header
[256] = {0};
265 if (SUCCESS
!= zend_hash_index_find(ranges
, 0, (void **) &zrange
) ||
266 SUCCESS
!= zend_hash_index_find(Z_ARRVAL_PP(zrange
), 0, (void **) &begin
) ||
267 SUCCESS
!= zend_hash_index_find(Z_ARRVAL_PP(zrange
), 1, (void **) &end
)) {
268 http_send_status(500);
272 /* Send HTTP 206 Partial Content */
273 http_send_status(206);
275 /* send content range header */
276 snprintf(range_header
, 255, "Content-Range: bytes %d-%d/%d", **begin
, **end
, size
);
277 http_send_header(range_header
);
279 /* send requested chunk */
280 return http_send_chunk(data
, **begin
, **end
+ 1, mode
);
285 char bound
[23] = {0}, preface
[1024] = {0},
286 multi_header
[68] = "Content-Type: multipart/byteranges; boundary=";
288 /* Send HTTP 206 Partial Content */
289 http_send_status(206);
291 /* send multipart/byteranges header */
292 snprintf(bound
, 22, "--%d%0.9f", time(NULL
), php_combined_lcg(TSRMLS_C
));
293 strncat(multi_header
, bound
+ 2, 21);
294 http_send_header(multi_header
);
296 /* send each requested chunk */
297 FOREACH_HASH_VAL(ranges
, zrange
) {
298 if (SUCCESS
!= zend_hash_index_find(Z_ARRVAL_PP(zrange
), 0, (void **) &begin
) ||
299 SUCCESS
!= zend_hash_index_find(Z_ARRVAL_PP(zrange
), 1, (void **) &end
)) {
303 snprintf(preface
, 1023,
305 HTTP_CRLF
"Content-Type: %s"
306 HTTP_CRLF
"Content-Range: bytes %ld-%ld/%ld"
311 HTTP_G(send
).content_type
? HTTP_G(send
).content_type
: "application/x-octetstream",
317 PHPWRITE(preface
, strlen(preface
));
318 http_send_chunk(data
, **begin
, **end
+ 1, mode
);
321 /* write boundary once more */
322 PHPWRITE(HTTP_CRLF
, lenof(HTTP_CRLF
));
323 PHPWRITE(bound
, strlen(bound
));
324 PHPWRITE("--", lenof("--"));
331 /* {{{ STATUS http_send(void *, size_t, http_send_mode) */
332 PHP_HTTP_API STATUS
_http_send(const void *data_ptr
, size_t data_size
, http_send_mode data_mode TSRMLS_DC
)
335 http_range_status range_status
;
345 /* stop on-the-fly etag generation */
346 if (cache_etag
= HTTP_G(etag
).started
) {
347 /* interrupt ob_etaghandler */
348 HTTP_G(etag
).started
= 0;
351 /* enable partial dl and resume */
352 http_send_header("Accept-Ranges: bytes");
354 zend_hash_init(&ranges
, 0, NULL
, ZVAL_PTR_DTOR
, 0);
355 range_status
= http_get_request_ranges(&ranges
, data_size
);
357 if (range_status
== RANGE_ERR
) {
358 zend_hash_destroy(&ranges
);
359 http_send_status(416);
363 /* Range Request - only send ranges if entity hasn't changed */
364 if ( range_status
== RANGE_OK
&&
365 http_match_etag_ex("HTTP_IF_MATCH", HTTP_G(send
).unquoted_etag
, 0) &&
366 http_match_last_modified_ex("HTTP_IF_UNMODIFIED_SINCE", HTTP_G(send
).last_modified
, 0)) {
367 STATUS result
= http_send_ranges(&ranges
, data_ptr
, data_size
, data_mode
);
368 zend_hash_destroy(&ranges
);
372 zend_hash_destroy(&ranges
);
374 /* send 304 Not Modified if etag matches - DON'T return on ETag generation failure */
378 if (!(etag
= http_etag(data_ptr
, data_size
, data_mode
))) {
379 http_error(E_NOTICE
, HTTP_E_PARAM
, "Failed to generate ETag for data source");
381 http_send_etag(etag
, 32);
382 if (http_match_etag("HTTP_IF_NONE_MATCH", etag
)) {
383 return http_cache_exit_ex(etag
, 1, 1);
389 /* send 304 Not Modified if last modified matches */
390 if (http_match_last_modified("HTTP_IF_MODIFIED_SINCE", HTTP_G(send
).last_modified
)) {
391 return http_cache_exit_ex(http_date(HTTP_G(send
).last_modified
), 0, 1);
394 /* send full entity */
395 return http_send_chunk(data_ptr
, 0, data_size
, data_mode
);
399 /* {{{ STATUS http_send_stream(php_stream *) */
400 PHP_HTTP_API STATUS
_http_send_stream_ex(php_stream
*file
, zend_bool close_stream TSRMLS_DC
)
403 php_stream_statbuf ssb
;
405 if ((!file
) || php_stream_stat(file
, &ssb
)) {
409 status
= http_send(file
, ssb
.sb
.st_size
, SEND_RSRC
);
412 php_stream_close(file
);
424 * vim600: sw=4 ts=4 fdm=marker