2 +--------------------------------------------------------------------+
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) 2004-2005, Michael Wallner <mike@php.net> |
10 +--------------------------------------------------------------------+
21 #include "php_streams.h"
22 #include "ext/standard/php_lcg.h"
25 #include "php_http_std_defs.h"
26 #include "php_http_api.h"
27 #include "php_http_date_api.h"
28 #include "php_http_send_api.h"
29 #include "php_http_headers_api.h"
30 #include "php_http_date_api.h"
31 #include "php_http_cache_api.h"
32 #include "php_http_encoding_api.h"
34 ZEND_EXTERN_MODULE_GLOBALS(http
);
36 #define http_flush(d, l) _http_flush((d), (l) SRMLS_CC)
37 /* {{{ static inline void http_flush() */
38 static inline void _http_flush(const char *data
, size_t data_len TSRMLS_DC
)
40 PHPWRITE(data
, data_len
);
41 php_end_ob_buffer(1, 1 TSRMLS_CC
);
44 #define HTTP_MSEC(s) (s * 1000)
45 #define HTTP_USEC(s) (HTTP_MSEC(s) * 1000)
46 #define HTTP_NSEC(s) (HTTP_USEC(s) * 1000)
47 #define HTTP_NANOSEC (1000 * 1000 * 1000)
48 #define HTTP_DIFFSEC (0.001)
50 if (HTTP_G(send
).throttle_delay
>= HTTP_DIFFSEC
) {
51 #if defined(PHP_WIN32)
52 Sleep((DWORD
) HTTP_MSEC(HTTP_G(send
).throttle_delay
));
53 #elif defined(HAVE_USLEEP)
54 usleep(HTTP_USEC(HTTP_G(send
).throttle_delay
));
55 #elif defined(HAVE_NANOSLEEP)
56 struct timespec req
, rem
;
58 req
.tv_sec
= (time_t) HTTP_G(send
).throttle_delay
;
59 req
.tv_nsec
= HTTP_NSEC(HTTP_G(send
).throttle_delay
) % HTTP_NANOSEC
;
61 while (nanosleep(&req
, &rem
) && (errno
== EINTR
) && (HTTP_NSEC(rem
.tv_sec
) + rem
.tv_nsec
) > HTTP_NSEC(HTTP_DIFFSEC
))) {
62 req
.tv_sec
= rem
.tv_sec
;
63 req
.tv_nsec
= rem
.tv_nsec
;
70 /* {{{ http_send_response_start */
71 #define http_send_response_start(b, cl) _http_send_response_start((b), (cl) TSRMLS_CC)
72 static inline void _http_send_response_start(void **buffer
, size_t content_length TSRMLS_DC
)
74 if (http_encoding_response_start(content_length
)) {
78 http_encoding_stream
*s
= emalloc(sizeof(http_encoding_stream
));
80 http_encoding_stream_init(s
, HTTP_G(send
).gzip_encoding
== HTTP_ENCODING_GZIP
, -1, &encoded
, &encoded_len
);
81 phpstr_chunked_output(&s
->storage
, encoded
, encoded_len
, HTTP_G(send
).buffer_size
, _http_flush TSRMLS_CC
);
89 /* {{{ http_send_response_data_plain */
90 #define http_send_response_data_plain(b, d, dl) _http_send_response_data_plain((b), (d), (dl) TSRMLS_CC)
91 static inline void _http_send_response_data_plain(void **buffer
, const char *data
, size_t data_len TSRMLS_DC
)
93 if (HTTP_G(send
).gzip_encoding
) {
97 http_encoding_stream
*s
= *((http_encoding_stream
**) buffer
);
99 http_encoding_stream_update(s
, data
, data_len
, &encoded
, &encoded_len
);
100 phpstr_chunked_output(&s
->storage
, encoded
, encoded_len
, HTTP_G(send
).buffer_size
, _http_flush TSRMLS_CC
);
103 http_error(HE_ERROR
, HTTP_E_RESPONSE
, "Attempt to send GZIP response despite being able to do so; please report this bug");
106 phpstr_chunked_output((phpstr
**) buffer
, data
, data_len
, HTTP_G(send
).buffer_size
, _http_flush TSRMLS_CC
);
111 #define HTTP_CHUNK_AVAIL(len, cs) ((len -= cs) >= 0)
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
)
116 long len
= end
- begin
, chunk_size
= 40960;
122 php_stream
*s
= (php_stream
*) data
;
124 if (SUCCESS
== php_stream_seek(s
, begin
, SEEK_SET
)) {
125 char *buf
= emalloc(chunk_size
);
127 while (HTTP_CHUNK_AVAIL(len
, chunk_size
)) {
128 http_send_response_data_plain(buffer
, buf
, php_stream_read(s
, buf
, chunk_size
));
130 /* read & write left over */
132 http_send_response_data_plain(buffer
, buf
, php_stream_read(s
, buf
, chunk_size
+ len
));
142 char *s
= (char *) data
+ begin
;
144 while (HTTP_CHUNK_AVAIL(len
, chunk_size
)) {
145 http_send_response_data_plain(buffer
, s
, chunk_size
);
148 /* write left over */
150 http_send_response_data_plain(buffer
, s
, chunk_size
+ len
);
155 EMPTY_SWITCH_DEFAULT_CASE();
160 /* {{{ http_send_response_finish */
161 #define http_send_response_finish(b) _http_send_response_finish((b) TSRMLS_CC)
162 static inline void _http_send_response_finish(void **buffer TSRMLS_DC
)
164 if (HTTP_G(send
).gzip_encoding
) {
165 #ifdef HTTP_HAVE_ZLIB
166 char *encoded
= NULL
;
167 size_t encoded_len
= 0;
168 http_encoding_stream
*s
= *((http_encoding_stream
**) buffer
);
170 http_encoding_stream_finish(s
, &encoded
, &encoded_len
);
171 phpstr_chunked_output(&s
->storage
, encoded
, encoded_len
, 0, _http_flush TSRMLS_CC
);
175 http_error(HE_ERROR
, HTTP_E_RESPONSE
, "Attempt to send GZIP response despite being able to do so; please report this bug");
178 phpstr_chunked_output((phpstr
**) buffer
, NULL
, 0, 0, _http_flush TSRMLS_CC
);
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
)
188 size_t header_len
= sizeof(": ") + name_len
+ value_len
+ 1;
189 char *header
= emalloc(header_len
+ 1);
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
);
195 *sent_header
= header
;
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
)
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
);
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
)
219 char *date
= http_date(t
);
225 ret
= http_send_header_ex("Last-Modified", lenof("Last-Modified"), date
, strlen(date
), 1, sent_header
);
229 HTTP_G(send
).last_modified
= t
;
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
)
242 http_error_ex(HE_WARNING
, HTTP_E_HEADER
, "Attempt to send empty ETag (previous: %s)\n", HTTP_G(send
).unquoted_etag
);
247 STR_SET(HTTP_G(send
).unquoted_etag
, estrndup(etag
, etag_len
));
249 etag_len
= spprintf(&etag_header
, 0, "ETag: \"%s\"", etag
);
250 status
= http_send_header_string_ex(etag_header
, etag_len
, 1);
253 *sent_header
= etag_header
;
262 /* {{{ STATUS http_send_content_type(char *, size_t) */
263 PHP_HTTP_API STATUS
_http_send_content_type(const char *content_type
, size_t ct_len TSRMLS_DC
)
265 HTTP_CHECK_CONTENT_TYPE(content_type
, return FAILURE
);
267 /* remember for multiple ranges */
268 STR_FREE(HTTP_G(send
).content_type
);
269 HTTP_G(send
).content_type
= estrndup(content_type
, ct_len
);
271 return http_send_header_ex("Content-Type", lenof("Content-Type"), content_type
, ct_len
, 1, NULL
);
275 /* {{{ STATUS http_send_content_disposition(char *, size_t, zend_bool) */
276 PHP_HTTP_API STATUS
_http_send_content_disposition(const char *filename
, size_t f_len
, zend_bool send_inline TSRMLS_DC
)
282 cd_header
= ecalloc(1, sizeof("Content-Disposition: inline; filename=\"\"") + f_len
);
283 sprintf(cd_header
, "Content-Disposition: inline; filename=\"%s\"", filename
);
285 cd_header
= ecalloc(1, sizeof("Content-Disposition: attachment; filename=\"\"") + f_len
);
286 sprintf(cd_header
, "Content-Disposition: attachment; filename=\"%s\"", filename
);
289 status
= http_send_header_string(cd_header
);
295 /* {{{ STATUS http_send(void *, size_t, http_send_mode) */
296 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
)
300 http_range_status range_status
;
301 int cache_etag
= http_interrupt_ob_etaghandler();
310 /* enable partial dl and resume */
311 http_send_header_string("Accept-Ranges: bytes");
313 zend_hash_init(&ranges
, 0, NULL
, ZVAL_PTR_DTOR
, 0);
314 range_status
= http_get_request_ranges(&ranges
, data_size
);
316 if (range_status
== RANGE_ERR
) {
317 zend_hash_destroy(&ranges
);
318 http_send_status(416);
322 switch (range_status
)
326 /* Range Request - only send ranges if entity hasn't changed */
327 if ( http_match_etag_ex("HTTP_IF_MATCH", HTTP_G(send
).unquoted_etag
, 0) &&
328 http_match_last_modified_ex("HTTP_IF_UNMODIFIED_SINCE", HTTP_G(send
).last_modified
, 0) &&
329 http_match_last_modified_ex("HTTP_UNLESS_MODIFIED_SINCE", HTTP_G(send
).last_modified
, 0)) {
331 if (zend_hash_num_elements(&ranges
) == 1) {
333 zval
**range
, **begin
, **end
;
335 if ( SUCCESS
== zend_hash_index_find(&ranges
, 0, (void **) &range
) &&
336 SUCCESS
== zend_hash_index_find(Z_ARRVAL_PP(range
), 0, (void **) &begin
) &&
337 SUCCESS
== zend_hash_index_find(Z_ARRVAL_PP(range
), 1, (void **) &end
)) {
338 char range_header_str
[256];
339 size_t range_header_len
;
341 range_header_len
= snprintf(range_header_str
, lenof(range_header_str
), "Content-Range: bytes %ld-%ld/%lu", Z_LVAL_PP(begin
), Z_LVAL_PP(end
), (unsigned long) data_size
);
342 http_send_status_header_ex(206, range_header_str
, range_header_len
, 1);
343 http_send_response_start(&s
, Z_LVAL_PP(end
)-Z_LVAL_PP(begin
)+1);
344 http_send_response_data_fetch(&s
, data_ptr
, data_size
, data_mode
, Z_LVAL_PP(begin
), Z_LVAL_PP(end
) + 1);
345 http_send_response_finish(&s
);
346 zend_hash_destroy(&ranges
);
351 zval
**range
, **begin
, **end
;
352 const char *content_type
= HTTP_G(send
).content_type
;
353 char boundary_str
[32], range_header_str
[256];
354 size_t boundary_len
, range_header_len
;
356 boundary_len
= snprintf(boundary_str
, lenof(boundary_str
), "%lu%0.9f", (unsigned long) time(NULL
), (float) php_combined_lcg(TSRMLS_C
));
357 range_header_len
= snprintf(range_header_str
, lenof(range_header_str
), "Content-Type: multipart/byteranges; boundary=%s", boundary_str
);
359 http_send_status_header_ex(206, range_header_str
, range_header_len
, 1);
360 http_send_response_start(&s
, 0);
363 content_type
= "application/x-octetstream";
366 FOREACH_HASH_VAL(&ranges
, range
) {
367 if ( SUCCESS
== zend_hash_index_find(Z_ARRVAL_PP(range
), 0, (void **) &begin
) &&
368 SUCCESS
== zend_hash_index_find(Z_ARRVAL_PP(range
), 1, (void **) &end
)) {
369 char preface_str
[512];
372 #define HTTP_RANGE_PREFACE \
374 HTTP_CRLF "Content-Type: %s" \
375 HTTP_CRLF "Content-Range: bytes %ld-%ld/%lu" \
378 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
);
379 http_send_response_data_plain(&s
, preface_str
, preface_len
);
380 http_send_response_data_fetch(&s
, data_ptr
, data_size
, data_mode
, Z_LVAL_PP(begin
), Z_LVAL_PP(end
) + 1);
384 http_send_response_data_plain(&s
, HTTP_CRLF
"--", lenof(HTTP_CRLF
"--"));
385 http_send_response_data_plain(&s
, boundary_str
, boundary_len
);
386 http_send_response_data_plain(&s
, "--", lenof("--"));
388 http_send_response_finish(&s
);
389 zend_hash_destroy(&ranges
);
396 zend_hash_destroy(&ranges
);
398 /* send 304 Not Modified if etag matches - DON'T return on ETag generation failure */
399 if (!no_cache
&& cache_etag
) {
402 if (etag
= http_etag(data_ptr
, data_size
, data_mode
)) {
403 char *sent_header
= NULL
;
405 http_send_etag_ex(etag
, strlen(etag
), &sent_header
);
406 if (http_match_etag("HTTP_IF_NONE_MATCH", etag
)) {
407 return http_exit_ex(304, sent_header
, NULL
, 0);
409 STR_FREE(sent_header
);
415 /* send 304 Not Modified if last modified matches */
416 if (!no_cache
&& http_match_last_modified("HTTP_IF_MODIFIED_SINCE", HTTP_G(send
).last_modified
)) {
417 char *sent_header
= NULL
;
418 http_send_last_modified_ex(HTTP_G(send
).last_modified
, &sent_header
);
419 return http_exit_ex(304, sent_header
, NULL
, 0);
422 /* send full response */
423 http_send_response_start(&s
, data_size
);
424 http_send_response_data_fetch(&s
, data_ptr
, data_size
, data_mode
, 0, data_size
);
425 http_send_response_finish(&s
);
433 /* {{{ STATUS http_send_stream(php_stream *) */
434 PHP_HTTP_API STATUS
_http_send_stream_ex(php_stream
*file
, zend_bool close_stream
, zend_bool no_cache TSRMLS_DC
)
437 php_stream_statbuf ssb
;
439 if ((!file
) || php_stream_stat(file
, &ssb
)) {
443 status
= http_send_ex(file
, ssb
.sb
.st_size
, SEND_RSRC
, no_cache
);
446 php_stream_close(file
);
458 * vim600: sw=4 ts=4 fdm=marker