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 +----------------------------------------------------------------------+
24 #include "php_streams.h"
25 #include "php_output.h"
26 #include "ext/standard/md5.h"
27 #include "ext/standard/sha1.h"
30 #include "php_http_std_defs.h"
31 #include "php_http_api.h"
32 #include "php_http_cache_api.h"
33 #include "php_http_send_api.h"
34 #include "php_http_date_api.h"
36 #ifdef HTTP_HAVE_MHASH
40 ZEND_EXTERN_MODULE_GLOBALS(http
);
42 PHP_MINIT_FUNCTION(http_cache
)
44 HTTP_LONG_CONSTANT("HTTP_ETAG_MD5", HTTP_ETAG_MD5
);
45 HTTP_LONG_CONSTANT("HTTP_ETAG_SHA1", HTTP_ETAG_SHA1
);
46 HTTP_LONG_CONSTANT("HTTP_ETAG_CRC32", HTTP_ETAG_CRC32
);
48 #ifdef HTTP_HAVE_MHASH
50 int l
, i
, c
= mhash_count();
52 for (i
= 0; i
<= c
; ++i
) {
53 char const_name
[256] = {0};
54 const char *hash_name
= mhash_get_hash_name_static(i
);
57 l
= snprintf(const_name
, 255, "HTTP_ETAG_MHASH_%s", hash_name
);
58 zend_register_long_constant(const_name
, l
+ 1, i
, CONST_CS
|CONST_PERSISTENT
, module_number TSRMLS_CC
);
67 /* {{{ char *http_etag(void *, size_t, http_send_mode) */
68 PHP_HTTP_API
char *_http_etag(const void *data_ptr
, size_t data_len
, http_send_mode data_mode TSRMLS_DC
)
70 void *ctx
= http_etag_init();
72 if (data_mode
== SEND_DATA
) {
73 http_etag_update(ctx
, data_ptr
, data_len
);
76 php_stream_statbuf ssb
;
78 if (data_mode
== SEND_RSRC
) {
79 ss
= php_stream_stat((php_stream
*) data_ptr
, &ssb
);
81 ss
= php_stream_stat_path((char *) data_ptr
, &ssb
);
89 char ssb_buf
[128] = {0};
91 ssb_len
= snprintf(ssb_buf
, 127, "%ld=%ld=%ld", (long) ssb
.sb
.st_mtime
,
93 (long) ssb
.sb
.st_size
);
94 http_etag_update(ctx
, ssb_buf
, ssb_len
);
98 return http_etag_finish(&ctx
);
102 /* {{{ time_t http_last_modified(void *, http_send_mode) */
103 PHP_HTTP_API
time_t _http_last_modified(const void *data_ptr
, http_send_mode data_mode TSRMLS_DC
)
105 php_stream_statbuf ssb
;
109 case SEND_DATA
: return time(NULL
);
110 case SEND_RSRC
: return php_stream_stat((php_stream
*) data_ptr
, &ssb
) ? 0 : ssb
.sb
.st_mtime
;
111 default: return php_stream_stat_path((char *) data_ptr
, &ssb
) ? 0 : ssb
.sb
.st_mtime
;
116 /* {{{ zend_bool http_match_last_modified(char *, time_t) */
117 PHP_HTTP_API zend_bool
_http_match_last_modified_ex(const char *entry
, time_t t
, zend_bool enforce_presence TSRMLS_DC
)
121 char *modified
, *chr_ptr
;
123 HTTP_GSC(zmodified
, entry
, !enforce_presence
);
125 modified
= estrndup(Z_STRVAL_P(zmodified
), Z_STRLEN_P(zmodified
));
126 if (chr_ptr
= strrchr(modified
, ';')) {
129 retval
= (t
<= http_parse_date(modified
));
135 /* {{{ zend_bool http_match_etag(char *, char *) */
136 PHP_HTTP_API zend_bool
_http_match_etag_ex(const char *entry
, const char *etag
, zend_bool enforce_presence TSRMLS_DC
)
142 HTTP_GSC(zetag
, entry
, !enforce_presence
);
144 if (NULL
!= strchr(Z_STRVAL_P(zetag
), '*')) {
148 spprintf("ed_etag
, 0, "\"%s\"", etag
);
149 if (!strchr(Z_STRVAL_P(zetag
), ',')) {
150 result
= !strcmp(Z_STRVAL_P(zetag
), quoted_etag
);
152 result
= (NULL
!= strstr(Z_STRVAL_P(zetag
), quoted_etag
));
160 /* {{{ STATUS http_cache_last_modified(time_t, time_t, char *, size_t) */
161 PHP_HTTP_API STATUS
_http_cache_last_modified(time_t last_modified
,
162 time_t send_modified
, const char *cache_control
, size_t cc_len TSRMLS_DC
)
164 char *sent_header
= NULL
;
166 if (cc_len
&& (SUCCESS
!= http_send_cache_control(cache_control
, cc_len
))) {
170 if (SUCCESS
!= http_send_last_modified_ex(send_modified
, &sent_header
)) {
174 if (http_match_last_modified("HTTP_IF_MODIFIED_SINCE", last_modified
)) {
175 http_exit_ex(304, sent_header
, NULL
, 0);
177 STR_FREE(sent_header
);
184 /* {{{ STATUS http_cache_etag(char *, size_t, char *, size_t) */
185 PHP_HTTP_API STATUS
_http_cache_etag(const char *etag
, size_t etag_len
,
186 const char *cache_control
, size_t cc_len TSRMLS_DC
)
188 char *sent_header
= NULL
;
190 if (cc_len
&& (SUCCESS
!= http_send_cache_control(cache_control
, cc_len
))) {
195 if (SUCCESS
!= http_send_etag_ex(etag
, etag_len
, &sent_header
)) {
198 if (http_match_etag("HTTP_IF_NONE_MATCH", etag
)) {
199 http_exit_ex(304, sent_header
, NULL
, 0);
201 STR_FREE(sent_header
);
206 /* start ob_etaghandler */
207 return http_start_ob_etaghandler();
211 PHP_HTTP_API STATUS
_http_start_ob_etaghandler(TSRMLS_D
)
213 /* already running? */
214 if (php_ob_handler_used("ob_etaghandler" TSRMLS_CC
)) {
215 http_error(HE_WARNING
, HTTP_E_RUNTIME
, "ob_etaghandler can only be used once");
219 HTTP_G(etag
).started
= 1;
220 return php_start_ob_buffer_named("ob_etaghandler", HTTP_G(send
).buffer_size
, 1 TSRMLS_CC
);
223 PHP_HTTP_API zend_bool
_http_interrupt_ob_etaghandler(TSRMLS_D
)
225 if (HTTP_G(etag
).started
) {
226 HTTP_G(etag
).started
= 0;
227 http_etag_free(&HTTP_G(etag
).ctx
);
233 /* {{{ void http_ob_etaghandler(char *, uint, char **, uint *, int) */
234 void _http_ob_etaghandler(char *output
, uint output_len
,
235 char **handled_output
, uint
*handled_output_len
, int mode TSRMLS_DC
)
238 *handled_output_len
= output_len
;
239 *handled_output
= estrndup(output
, output_len
);
241 /* are we supposed to run? */
242 if (HTTP_G(etag
).started
) {
243 /* initialize the etag context */
244 if (mode
& PHP_OUTPUT_HANDLER_START
) {
245 HTTP_G(etag
).ctx
= http_etag_init();
249 http_etag_update(HTTP_G(etag
).ctx
, output
, output_len
);
252 if (mode
& PHP_OUTPUT_HANDLER_END
) {
253 char *sent_header
= NULL
;
254 char *etag
= http_etag_finish(&HTTP_G(etag
).ctx
);
256 http_send_cache_control(HTTP_DEFAULT_CACHECONTROL
, lenof(HTTP_DEFAULT_CACHECONTROL
));
257 http_send_etag_ex(etag
, strlen(etag
), &sent_header
);
259 if (http_match_etag("HTTP_IF_NONE_MATCH", etag
)) {
260 http_exit_ex(304, sent_header
, etag
, 0);
263 STR_FREE(sent_header
);
275 * vim600: sw=4 ts=4 fdm=marker