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 "php_output.h"
25 #include "ext/standard/md5.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 ZEND_EXTERN_MODULE_GLOBALS(http
);
38 /* {{{ STATUS http_cache_exit(char *, zend_bool) */
39 STATUS
_http_cache_exit_ex(char *cache_token
, zend_bool etag
, zend_bool free_token TSRMLS_DC
)
41 if (HTTP_G(cache_log
) && strlen(HTTP_G(cache_log
))) {
42 php_stream
*log
= php_stream_open_wrapper(HTTP_G(cache_log
), "ab", REPORT_ERRORS
|ENFORCE_SAFE_MODE
, NULL
);
50 strftime(datetime
, sizeof(datetime
), "%Y-%m-%d %H:%M:%S", php_localtime_r(&now
, &nowtm
));
51 php_stream_printf(log TSRMLS_CC
, "%s [%s] %32s %s\n", datetime
, etag
? "ETAG":"LMOD", cache_token
, SG(request_info
).request_uri
);
52 php_stream_close(log
);
55 if (free_token
&& cache_token
) {
58 return http_exit_ex(304, NULL
, 0);
62 /* {{{ char *http_etag(void *, size_t, http_send_mode) */
63 PHP_HTTP_API
char *_http_etag(const void *data_ptr
, size_t data_len
, http_send_mode data_mode TSRMLS_DC
)
65 char ssb_buf
[128] = {0};
66 unsigned char digest
[16];
68 char *new_etag
= ecalloc(1, 33);
75 PHP_MD5Update(&ctx
, data_ptr
, data_len
);
79 if (!HTTP_G(ssb
).sb
.st_ino
) {
80 if (php_stream_stat((php_stream
*) data_ptr
, &HTTP_G(ssb
))) {
84 snprintf(ssb_buf
, 127, "%ld=%ld=%ld",
85 HTTP_G(ssb
).sb
.st_mtime
,
86 HTTP_G(ssb
).sb
.st_ino
,
87 HTTP_G(ssb
).sb
.st_size
89 PHP_MD5Update(&ctx
, ssb_buf
, strlen(ssb_buf
));
98 PHP_MD5Final(digest
, &ctx
);
99 make_digest(new_etag
, digest
);
105 /* {{{ time_t http_last_modified(void *, http_send_mode) */
106 PHP_HTTP_API
time_t _http_last_modified(const void *data_ptr
, http_send_mode data_mode TSRMLS_DC
)
117 php_stream_stat((php_stream
*) data_ptr
, &HTTP_G(ssb
));
118 return HTTP_G(ssb
).sb
.st_mtime
;
123 php_stream_stat_path(Z_STRVAL_P((zval
*) data_ptr
), &HTTP_G(ssb
));
124 return HTTP_G(ssb
).sb
.st_mtime
;
130 /* {{{ zend_bool http_match_last_modified(char *, time_t) */
131 PHP_HTTP_API zend_bool
_http_match_last_modified_ex(const char *entry
, time_t t
, zend_bool enforce_presence TSRMLS_DC
)
135 char *modified
, *chr_ptr
;
137 HTTP_GSC(zmodified
, entry
, !enforce_presence
);
139 modified
= estrndup(Z_STRVAL_P(zmodified
), Z_STRLEN_P(zmodified
));
140 if (chr_ptr
= strrchr(modified
, ';')) {
143 retval
= (t
<= http_parse_date(modified
));
149 /* {{{ zend_bool http_match_etag(char *, char *) */
150 PHP_HTTP_API zend_bool
_http_match_etag_ex(const char *entry
, const char *etag
, zend_bool enforce_presence TSRMLS_DC
)
156 HTTP_GSC(zetag
, entry
, !enforce_presence
);
158 if (NULL
!= strchr(Z_STRVAL_P(zetag
), '*')) {
162 quoted_etag
= (char *) emalloc(strlen(etag
) + 3);
163 sprintf(quoted_etag
, "\"%s\"", etag
);
165 if (!strchr(Z_STRVAL_P(zetag
), ',')) {
166 result
= !strcmp(Z_STRVAL_P(zetag
), quoted_etag
);
168 result
= (NULL
!= strstr(Z_STRVAL_P(zetag
), quoted_etag
));
175 /* {{{ STATUS http_cache_last_modified(time_t, time_t, char *, size_t) */
176 PHP_HTTP_API STATUS
_http_cache_last_modified(time_t last_modified
,
177 time_t send_modified
, const char *cache_control
, size_t cc_len TSRMLS_DC
)
179 if (cc_len
&& (SUCCESS
!= http_send_cache_control(cache_control
, cc_len
))) {
183 if (SUCCESS
!= http_send_last_modified(send_modified
)) {
187 if (http_match_last_modified("HTTP_IF_MODIFIED_SINCE", last_modified
)) {
188 return http_cache_exit(http_date(last_modified
), 0);
195 /* {{{ STATUS http_cache_etag(char *, size_t, char *, size_t) */
196 PHP_HTTP_API STATUS
_http_cache_etag(const char *etag
, size_t etag_len
,
197 const char *cache_control
, size_t cc_len TSRMLS_DC
)
199 if (cc_len
&& (SUCCESS
!= http_send_cache_control(cache_control
, cc_len
))) {
204 if (SUCCESS
!= http_send_etag(etag
, etag_len
)) {
207 if (!http_match_etag("HTTP_IF_NONE_MATCH", etag
)) {
210 return http_cache_exit_ex((char *)etag
, 1, 0);
213 /* if no etag is given and we didn't already start ob_etaghandler -- start it */
214 if (HTTP_G(etag_started
)) {
218 if (HTTP_G(etag_started
) = (SUCCESS
== php_start_ob_buffer_named("ob_etaghandler", HTTP_SENDBUF_SIZE
, 1 TSRMLS_CC
))) {
227 /* {{{ void http_ob_etaghandler(char *, uint, char **, uint *, int) */
228 PHP_HTTP_API
void _http_ob_etaghandler(char *output
, uint output_len
,
229 char **handled_output
, uint
*handled_output_len
, int mode TSRMLS_DC
)
231 char etag
[33] = { 0 };
232 unsigned char digest
[16];
234 if (mode
& PHP_OUTPUT_HANDLER_START
) {
235 HTTP_G(etag_started
) = 1;
236 PHP_MD5Init(&HTTP_G(etag_md5
));
239 PHP_MD5Update(&HTTP_G(etag_md5
), output
, output_len
);
241 if (mode
& PHP_OUTPUT_HANDLER_END
) {
242 PHP_MD5Final(digest
, &HTTP_G(etag_md5
));
244 /* just do that if desired */
245 if (HTTP_G(etag_started
)) {
246 make_digest(etag
, digest
);
247 http_send_header("Cache-Control: " HTTP_DEFAULT_CACHECONTROL
);
248 http_send_etag(etag
, 32);
250 if (http_match_etag("HTTP_IF_NONE_MATCH", etag
)) {
251 http_cache_exit_ex(etag
, 1, 0);
256 *handled_output_len
= output_len
;
257 *handled_output
= estrndup(output
, output_len
);
266 * vim600: sw=4 ts=4 fdm=marker