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 "php_output.h"
25 #include "php_http_std_defs.h"
26 #include "php_http_api.h"
27 #include "php_http_cache_api.h"
28 #include "php_http_send_api.h"
29 #include "php_http_date_api.h"
31 ZEND_EXTERN_MODULE_GLOBALS(http
);
33 /* {{{ char *http_etag(void *, size_t, http_send_mode) */
34 PHP_HTTP_API
char *_http_etag(const void *data_ptr
, size_t data_len
, http_send_mode data_mode TSRMLS_DC
)
36 void *ctx
= http_etag_init();
38 if (data_mode
== SEND_DATA
) {
39 http_etag_update(ctx
, data_ptr
, data_len
);
42 php_stream_statbuf ssb
;
44 if (data_mode
== SEND_RSRC
) {
45 ss
= php_stream_stat((php_stream
*) data_ptr
, &ssb
);
47 ss
= php_stream_stat_path((char *) data_ptr
, &ssb
);
55 char ssb_buf
[128] = {0};
57 ssb_len
= snprintf(ssb_buf
, 127, "%ld=%ld=%ld", (long) ssb
.sb
.st_mtime
,
59 (long) ssb
.sb
.st_size
);
60 http_etag_update(ctx
, ssb_buf
, ssb_len
);
64 return http_etag_finish(ctx
);
68 /* {{{ time_t http_last_modified(void *, http_send_mode) */
69 PHP_HTTP_API
time_t _http_last_modified(const void *data_ptr
, http_send_mode data_mode TSRMLS_DC
)
71 php_stream_statbuf ssb
;
75 case SEND_DATA
: return time(NULL
);
76 case SEND_RSRC
: return php_stream_stat((php_stream
*) data_ptr
, &ssb
) ? 0 : ssb
.sb
.st_mtime
;
77 default: return php_stream_stat_path((char *) data_ptr
, &ssb
) ? 0 : ssb
.sb
.st_mtime
;
82 /* {{{ zend_bool http_match_last_modified(char *, time_t) */
83 PHP_HTTP_API zend_bool
_http_match_last_modified_ex(const char *entry
, time_t t
, zend_bool enforce_presence TSRMLS_DC
)
87 char *modified
, *chr_ptr
;
89 HTTP_GSC(zmodified
, entry
, !enforce_presence
);
91 modified
= estrndup(Z_STRVAL_P(zmodified
), Z_STRLEN_P(zmodified
));
92 if ((chr_ptr
= strrchr(modified
, ';'))) {
95 retval
= (t
<= http_parse_date(modified
));
101 /* {{{ zend_bool http_match_etag(char *, char *) */
102 PHP_HTTP_API zend_bool
_http_match_etag_ex(const char *entry
, const char *etag
, zend_bool enforce_presence TSRMLS_DC
)
108 HTTP_GSC(zetag
, entry
, !enforce_presence
);
110 if (NULL
!= strchr(Z_STRVAL_P(zetag
), '*')) {
114 spprintf("ed_etag
, 0, "\"%s\"", etag
);
115 if (!strchr(Z_STRVAL_P(zetag
), ',')) {
116 result
= !strcmp(Z_STRVAL_P(zetag
), quoted_etag
);
118 result
= (NULL
!= strstr(Z_STRVAL_P(zetag
), quoted_etag
));
126 /* {{{ STATUS http_cache_last_modified(time_t, time_t, char *, size_t) */
127 PHP_HTTP_API STATUS
_http_cache_last_modified(time_t last_modified
,
128 time_t send_modified
, const char *cache_control
, size_t cc_len TSRMLS_DC
)
130 char *sent_header
= NULL
;
132 if (SG(headers_sent
)) {
136 if (cc_len
&& (SUCCESS
!= http_send_cache_control(cache_control
, cc_len
))) {
140 if (SUCCESS
!= http_send_last_modified_ex(send_modified
, &sent_header
)) {
144 if (http_match_last_modified("HTTP_IF_MODIFIED_SINCE", last_modified
)) {
145 http_exit_ex(304, sent_header
, NULL
, 0);
147 STR_FREE(sent_header
);
154 /* {{{ STATUS http_cache_etag(char *, size_t, char *, size_t) */
155 PHP_HTTP_API STATUS
_http_cache_etag(const char *etag
, size_t etag_len
,
156 const char *cache_control
, size_t cc_len TSRMLS_DC
)
158 char *sent_header
= NULL
;
160 if (SG(headers_sent
)) {
164 if (cc_len
&& (SUCCESS
!= http_send_cache_control(cache_control
, cc_len
))) {
169 if (SUCCESS
!= http_send_etag_ex(etag
, etag_len
, &sent_header
)) {
172 if (http_match_etag("HTTP_IF_NONE_MATCH", etag
)) {
173 http_exit_ex(304, sent_header
, NULL
, 0);
175 STR_FREE(sent_header
);
180 /* start ob_etaghandler */
181 return http_start_ob_etaghandler();
185 PHP_HTTP_API STATUS
_http_start_ob_etaghandler(TSRMLS_D
)
187 /* already running? */
188 if (php_ob_handler_used("ob_etaghandler" TSRMLS_CC
)) {
189 http_error(HE_WARNING
, HTTP_E_RUNTIME
, "ob_etaghandler can only be used once");
193 HTTP_G(etag
).started
= 1;
194 return php_start_ob_buffer_named("ob_etaghandler", HTTP_G(send
).buffer_size
, 1 TSRMLS_CC
);
197 PHP_HTTP_API zend_bool
_http_interrupt_ob_etaghandler(TSRMLS_D
)
199 if (HTTP_G(etag
).started
) {
200 HTTP_G(etag
).started
= 0;
201 if (HTTP_G(etag
).ctx
) {
202 efree(HTTP_G(etag
).ctx
);
203 HTTP_G(etag
).ctx
= NULL
;
210 /* {{{ void http_ob_etaghandler(char *, uint, char **, uint *, int) */
211 void _http_ob_etaghandler(char *output
, uint output_len
,
212 char **handled_output
, uint
*handled_output_len
, int mode TSRMLS_DC
)
215 *handled_output_len
= output_len
;
216 *handled_output
= estrndup(output
, output_len
);
218 /* are we supposed to run? */
219 if (HTTP_G(etag
).started
) {
220 /* initialize the etag context */
221 if (mode
& PHP_OUTPUT_HANDLER_START
) {
222 HTTP_G(etag
).ctx
= http_etag_init();
226 http_etag_update(HTTP_G(etag
).ctx
, output
, output_len
);
229 if (mode
& PHP_OUTPUT_HANDLER_END
) {
230 char *sent_header
= NULL
;
231 char *etag
= http_etag_finish(HTTP_G(etag
).ctx
);
233 HTTP_G(etag
).ctx
= NULL
;
235 http_send_cache_control(HTTP_DEFAULT_CACHECONTROL
, lenof(HTTP_DEFAULT_CACHECONTROL
));
236 http_send_etag_ex(etag
, strlen(etag
), &sent_header
);
238 if (http_match_etag("HTTP_IF_NONE_MATCH", etag
)) {
239 http_exit_ex(304, sent_header
, etag
, 0);
242 STR_FREE(sent_header
);
254 * vim600: sw=4 ts=4 fdm=marker