- simplify http_send_header API
[m6w6/ext-http] / http_cache_api.c
index 8df1ada23dbeafa9c75a4f40edcc52bd0ff810a7..43540b39de06a17d3bbf125e77cb51eeb7748cdd 100644 (file)
 #ifdef HAVE_CONFIG_H
 #      include "config.h"
 #endif
-
 #include "php.h"
+
+#include "SAPI.h"
 #include "php_streams.h"
+#include "php_output.h"
 #include "ext/standard/md5.h"
 
 #include "php_http.h"
 #include "php_http_std_defs.h"
+#include "php_http_api.h"
 #include "php_http_cache_api.h"
 #include "php_http_send_api.h"
-#include "php_http_api.h"
 #include "php_http_date_api.h"
 
 ZEND_EXTERN_MODULE_GLOBALS(http);
 
+/* {{{ STATUS http_cache_exit(char *, zend_bool) */
+STATUS _http_cache_exit_ex(char *cache_token, zend_bool etag, zend_bool free_token TSRMLS_DC)
+{
+       if (HTTP_G(log).cache && strlen(HTTP_G(log).cache)) {
+               php_stream *log = php_stream_open_wrapper(HTTP_G(log).cache, "ab", REPORT_ERRORS|ENFORCE_SAFE_MODE, NULL);
+
+               if (log) {
+                       time_t now;
+                       struct tm nowtm;
+                       char datetime[128];
+
+                       time(&now);
+                       strftime(datetime, sizeof(datetime), "%Y-%m-%d %H:%M:%S", php_localtime_r(&now, &nowtm));
+                       php_stream_printf(log TSRMLS_CC, "%s [%s] %32s %s\n", datetime, etag ? "ETAG":"LMOD", cache_token, SG(request_info).request_uri);
+                       php_stream_close(log);
+               }
+       }
+       if (free_token && cache_token) {
+               efree(cache_token);
+       }
+       return http_exit_ex(304, NULL, 0);
+}
+/* }}} */
+
 /* {{{ char *http_etag(void *, size_t, http_send_mode) */
 PHP_HTTP_API char *_http_etag(const void *data_ptr, size_t data_len, http_send_mode data_mode TSRMLS_DC)
 {
+       php_stream_statbuf ssb;
        char ssb_buf[128] = {0};
        unsigned char digest[16];
        PHP_MD5_CTX ctx;
@@ -49,22 +76,27 @@ PHP_HTTP_API char *_http_etag(const void *data_ptr, size_t data_len, http_send_m
                break;
 
                case SEND_RSRC:
-                       if (!HTTP_G(ssb).sb.st_ino) {
-                               if (php_stream_stat((php_stream *) data_ptr, &HTTP_G(ssb))) {
-                                       return NULL;
-                               }
+               {
+                       if (php_stream_stat((php_stream *) data_ptr, &ssb)) {
+                               efree(new_etag);
+                               return NULL;
                        }
-                       snprintf(ssb_buf, 127, "%ld=%ld=%ld",
-                               HTTP_G(ssb).sb.st_mtime,
-                               HTTP_G(ssb).sb.st_ino,
-                               HTTP_G(ssb).sb.st_size
-                       );
+
+                       snprintf(ssb_buf, 127, "%ld=%ld=%ld", ssb.sb.st_mtime, ssb.sb.st_ino, ssb.sb.st_size);
                        PHP_MD5Update(&ctx, ssb_buf, strlen(ssb_buf));
+               }
                break;
 
                default:
-                       efree(new_etag);
-                       return NULL;
+               {
+                       if (php_stream_stat_path(Z_STRVAL_P((zval *) data_ptr), &ssb)) {
+                               efree(new_etag);
+                               return NULL;
+                       }
+
+                       snprintf(ssb_buf, 127, "%ld=%ld=%ld", ssb.sb.st_mtime, ssb.sb.st_ino, ssb.sb.st_size);
+                       PHP_MD5Update(&ctx, ssb_buf, strlen(ssb_buf));
+               }
                break;
        }
 
@@ -75,33 +107,22 @@ PHP_HTTP_API char *_http_etag(const void *data_ptr, size_t data_len, http_send_m
 }
 /* }}} */
 
-/* {{{ time_t http_lmod(void *, http_send_mode) */
-PHP_HTTP_API time_t _http_lmod(const void *data_ptr, http_send_mode data_mode TSRMLS_DC)
+/* {{{ time_t http_last_modified(void *, http_send_mode) */
+PHP_HTTP_API time_t _http_last_modified(const void *data_ptr, http_send_mode data_mode TSRMLS_DC)
 {
+       php_stream_statbuf ssb;
+
        switch (data_mode)
        {
-               case SEND_DATA:
-               {
-                       return time(NULL);
-               }
-
-               case SEND_RSRC:
-               {
-                       php_stream_stat((php_stream *) data_ptr, &HTTP_G(ssb));
-                       return HTTP_G(ssb).sb.st_mtime;
-               }
-
-               default:
-               {
-                       php_stream_stat_path(Z_STRVAL_P((zval *) data_ptr), &HTTP_G(ssb));
-                       return HTTP_G(ssb).sb.st_mtime;
-               }
+               case SEND_DATA: return time(NULL);
+               case SEND_RSRC: return php_stream_stat((php_stream *) data_ptr, &ssb) ? 0 : ssb.sb.st_mtime;
+               default:                return php_stream_stat_path(Z_STRVAL_P((zval *) data_ptr), &ssb) ? 0 : ssb.sb.st_mtime;
        }
 }
 /* }}} */
 
-/* {{{ zend_bool http_modified_match(char *, time_t) */
-PHP_HTTP_API zend_bool _http_modified_match_ex(const char *entry, time_t t, zend_bool enforce_presence TSRMLS_DC)
+/* {{{ zend_bool http_match_last_modified(char *, time_t) */
+PHP_HTTP_API zend_bool _http_match_last_modified_ex(const char *entry, time_t t, zend_bool enforce_presence TSRMLS_DC)
 {
        zend_bool retval;
        zval *zmodified;
@@ -119,8 +140,8 @@ PHP_HTTP_API zend_bool _http_modified_match_ex(const char *entry, time_t t, zend
 }
 /* }}} */
 
-/* {{{ zend_bool http_etag_match(char *, char *) */
-PHP_HTTP_API zend_bool _http_etag_match_ex(const char *entry, const char *etag, zend_bool enforce_presence TSRMLS_DC)
+/* {{{ zend_bool http_match_etag(char *, char *) */
+PHP_HTTP_API zend_bool _http_match_etag_ex(const char *entry, const char *etag, zend_bool enforce_presence TSRMLS_DC)
 {
        zval *zetag;
        char *quoted_etag;
@@ -149,19 +170,19 @@ PHP_HTTP_API zend_bool _http_etag_match_ex(const char *entry, const char *etag,
 PHP_HTTP_API STATUS _http_cache_last_modified(time_t last_modified,
        time_t send_modified, const char *cache_control, size_t cc_len TSRMLS_DC)
 {
-       if (cc_len) {
-               http_send_cache_control(cache_control, cc_len);
+       if (cc_len && (SUCCESS != http_send_cache_control(cache_control, cc_len))) {
+               return FAILURE;
        }
 
-       if (http_modified_match("HTTP_IF_MODIFIED_SINCE", last_modified)) {
-               if (SUCCESS == http_send_status(304)) {
-                       zend_bailout();
-               } else {
-                       php_error_docref(NULL TSRMLS_CC, E_WARNING, "Could not send 304 Not Modified");
-                       return FAILURE;
-               }
+       if (SUCCESS != http_send_last_modified(send_modified)) {
+               return FAILURE;
+       }
+
+       if (http_match_last_modified("HTTP_IF_MODIFIED_SINCE", last_modified)) {
+               return http_cache_exit(http_date(last_modified), 0);
        }
-       return http_send_last_modified(send_modified);
+
+       return SUCCESS;
 }
 /* }}} */
 
@@ -169,36 +190,66 @@ PHP_HTTP_API STATUS _http_cache_last_modified(time_t last_modified,
 PHP_HTTP_API STATUS _http_cache_etag(const char *etag, size_t etag_len,
        const char *cache_control, size_t cc_len TSRMLS_DC)
 {
-       if (cc_len) {
-               http_send_cache_control(cache_control, cc_len);
+       if (cc_len && (SUCCESS != http_send_cache_control(cache_control, cc_len))) {
+               return FAILURE;
        }
 
        if (etag_len) {
-               http_send_etag(etag, etag_len);
-               if (http_etag_match("HTTP_IF_NONE_MATCH", etag)) {
-                       if (SUCCESS == http_send_status(304)) {
-                               zend_bailout();
-                       } else {
-                               php_error_docref(NULL TSRMLS_CC, E_WARNING, "Could not send 304 Not Modified");
-                               return FAILURE;
-                       }
+               if (SUCCESS != http_send_etag(etag, etag_len)) {
+                       return FAILURE;
+               }
+               if (!http_match_etag("HTTP_IF_NONE_MATCH", etag)) {
+                       return SUCCESS;
                }
+               return http_cache_exit_ex((char *)etag, 1, 0);
        }
 
        /* if no etag is given and we didn't already start ob_etaghandler -- start it */
-       if (!HTTP_G(etag_started)) {
-               if (SUCCESS == http_start_ob_handler(_http_ob_etaghandler, "ob_etaghandler", 4096, 1)) {
-                       HTTP_G(etag_started) = 1;
-                       return SUCCESS;
-               } else {
-                       php_error_docref(NULL TSRMLS_CC, E_WARNING, "Could not start ob_etaghandler");
-                       return FAILURE;
-               }
+       if (HTTP_G(etag).started) {
+               return SUCCESS;
+       }
+
+       if (HTTP_G(etag).started = (SUCCESS == php_start_ob_buffer_named("ob_etaghandler", HTTP_SENDBUF_SIZE, 1 TSRMLS_CC))) {
+               return SUCCESS;
+       } else {
+               return FAILURE;
        }
-       return SUCCESS;
 }
 /* }}} */
 
+/* {{{ void http_ob_etaghandler(char *, uint, char **, uint *, int) */
+PHP_HTTP_API void _http_ob_etaghandler(char *output, uint output_len,
+       char **handled_output, uint *handled_output_len, int mode TSRMLS_DC)
+{
+       char etag[33] = { 0 };
+       unsigned char digest[16];
+
+       if (mode & PHP_OUTPUT_HANDLER_START) {
+               HTTP_G(etag).started = 1;
+               PHP_MD5Init(&HTTP_G(etag).md5ctx);
+       }
+
+       PHP_MD5Update(&HTTP_G(etag).md5ctx, output, output_len);
+
+       if (mode & PHP_OUTPUT_HANDLER_END) {
+               PHP_MD5Final(digest, &HTTP_G(etag).md5ctx);
+
+               /* just do that if desired */
+               if (HTTP_G(etag).started) {
+                       make_digest(etag, digest);
+                       http_send_cache_control(HTTP_DEFAULT_CACHECONTROL, lenof(HTTP_DEFAULT_CACHECONTROL));
+                       http_send_etag(etag, 32);
+
+                       if (http_match_etag("HTTP_IF_NONE_MATCH", etag)) {
+                               http_cache_exit_ex(etag, 1, 0);
+                       }
+               }
+       }
+
+       *handled_output_len = output_len;
+       *handled_output = estrndup(output, output_len);
+}
+/* }}} */
 
 /*
  * Local variables: