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(log
).cache
&& strlen(HTTP_G(log
).cache
)) {
42 php_stream
*log
= php_stream_open_wrapper(HTTP_G(log
).cache
, "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
);
80 php_stream_statbuf ssb
;
82 if (php_stream_stat((php_stream
*) data_ptr
, &ssb
)) {
85 snprintf(ssb_buf
, 127, "%ld=%ld=%ld", ssb
.sb
.st_mtime
, ssb
.sb
.st_ino
, ssb
.sb
.st_size
);
86 PHP_MD5Update(&ctx
, ssb_buf
, strlen(ssb_buf
));
96 PHP_MD5Final(digest
, &ctx
);
97 make_digest(new_etag
, digest
);
103 /* {{{ time_t http_last_modified(void *, http_send_mode) */
104 PHP_HTTP_API
time_t _http_last_modified(const void *data_ptr
, http_send_mode data_mode TSRMLS_DC
)
106 php_stream_statbuf ssb
;
110 case SEND_DATA
: return time(NULL
);
111 case SEND_RSRC
: return php_stream_stat((php_stream
*) data_ptr
, &ssb
) ? 0 : ssb
.sb
.st_mtime
;
112 default: return php_stream_stat_path(Z_STRVAL_P((zval
*) data_ptr
), &ssb
) ? 0 : ssb
.sb
.st_mtime
;
117 /* {{{ zend_bool http_match_last_modified(char *, time_t) */
118 PHP_HTTP_API zend_bool
_http_match_last_modified_ex(const char *entry
, time_t t
, zend_bool enforce_presence TSRMLS_DC
)
122 char *modified
, *chr_ptr
;
124 HTTP_GSC(zmodified
, entry
, !enforce_presence
);
126 modified
= estrndup(Z_STRVAL_P(zmodified
), Z_STRLEN_P(zmodified
));
127 if (chr_ptr
= strrchr(modified
, ';')) {
130 retval
= (t
<= http_parse_date(modified
));
136 /* {{{ zend_bool http_match_etag(char *, char *) */
137 PHP_HTTP_API zend_bool
_http_match_etag_ex(const char *entry
, const char *etag
, zend_bool enforce_presence TSRMLS_DC
)
143 HTTP_GSC(zetag
, entry
, !enforce_presence
);
145 if (NULL
!= strchr(Z_STRVAL_P(zetag
), '*')) {
149 quoted_etag
= (char *) emalloc(strlen(etag
) + 3);
150 sprintf(quoted_etag
, "\"%s\"", etag
);
152 if (!strchr(Z_STRVAL_P(zetag
), ',')) {
153 result
= !strcmp(Z_STRVAL_P(zetag
), quoted_etag
);
155 result
= (NULL
!= strstr(Z_STRVAL_P(zetag
), quoted_etag
));
162 /* {{{ STATUS http_cache_last_modified(time_t, time_t, char *, size_t) */
163 PHP_HTTP_API STATUS
_http_cache_last_modified(time_t last_modified
,
164 time_t send_modified
, const char *cache_control
, size_t cc_len TSRMLS_DC
)
166 if (cc_len
&& (SUCCESS
!= http_send_cache_control(cache_control
, cc_len
))) {
170 if (SUCCESS
!= http_send_last_modified(send_modified
)) {
174 if (http_match_last_modified("HTTP_IF_MODIFIED_SINCE", last_modified
)) {
175 return http_cache_exit(http_date(last_modified
), 0);
182 /* {{{ STATUS http_cache_etag(char *, size_t, char *, size_t) */
183 PHP_HTTP_API STATUS
_http_cache_etag(const char *etag
, size_t etag_len
,
184 const char *cache_control
, size_t cc_len TSRMLS_DC
)
186 if (cc_len
&& (SUCCESS
!= http_send_cache_control(cache_control
, cc_len
))) {
191 if (SUCCESS
!= http_send_etag(etag
, etag_len
)) {
194 if (!http_match_etag("HTTP_IF_NONE_MATCH", etag
)) {
197 return http_cache_exit_ex((char *)etag
, 1, 0);
200 /* if no etag is given and we didn't already start ob_etaghandler -- start it */
201 if (HTTP_G(etag
).started
) {
205 if (HTTP_G(etag
).started
= (SUCCESS
== php_start_ob_buffer_named("ob_etaghandler", HTTP_SENDBUF_SIZE
, 1 TSRMLS_CC
))) {
213 /* {{{ void http_ob_etaghandler(char *, uint, char **, uint *, int) */
214 PHP_HTTP_API
void _http_ob_etaghandler(char *output
, uint output_len
,
215 char **handled_output
, uint
*handled_output_len
, int mode TSRMLS_DC
)
217 char etag
[33] = { 0 };
218 unsigned char digest
[16];
220 if (mode
& PHP_OUTPUT_HANDLER_START
) {
221 HTTP_G(etag
).started
= 1;
222 PHP_MD5Init(&HTTP_G(etag
).md5ctx
);
225 PHP_MD5Update(&HTTP_G(etag
).md5ctx
, output
, output_len
);
227 if (mode
& PHP_OUTPUT_HANDLER_END
) {
228 PHP_MD5Final(digest
, &HTTP_G(etag
).md5ctx
);
230 /* just do that if desired */
231 if (HTTP_G(etag
).started
) {
232 make_digest(etag
, digest
);
233 http_send_header("Cache-Control: " HTTP_DEFAULT_CACHECONTROL
);
234 http_send_etag(etag
, 32);
236 if (http_match_etag("HTTP_IF_NONE_MATCH", etag
)) {
237 http_cache_exit_ex(etag
, 1, 0);
242 *handled_output_len
= output_len
;
243 *handled_output
= estrndup(output
, output_len
);
252 * vim600: sw=4 ts=4 fdm=marker