git.m6w6.name Git - m6w6/ext-http/blob - php_http_cache_api.h

   1 /*
   2     +--------------------------------------------------------------------+
   3     | PECL :: http                                                       |
   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     +--------------------------------------------------------------------+
  11 */
  12
  13 /* $Id$ */
  14
  15 #ifndef PHP_HTTP_CACHE_API_H
  16 #define PHP_HTTP_CACHE_API_H
  17
  18 #include "zend_ini.h"
  19
  20 #include "ext/standard/crc32.h"
  21 #include "ext/standard/sha1.h"
  22 #include "ext/standard/md5.h"
  23
  24 #include "php_http_std_defs.h"
  25 #include "php_http.h"
  26 #include "php_http_api.h"
  27 #include "php_http_send_api.h"
  28
  29 #ifdef HTTP_HAVE_EXT_HASH
  30 #       include "php_hash.h"
  31 #endif
  32
  33 ZEND_EXTERN_MODULE_GLOBALS(http);
  34
  35 #define http_etag_digest(d, l) _http_etag_digest((d), (l))
  36 static inline char *_http_etag_digest(const unsigned char *digest, int len)
  37 {
  38         static const char hexdigits[16] = "0123456789abcdef";
  39         int i;
  40         char *hex = emalloc(len * 2 + 1);
  41         char *ptr = hex;
  42
  43         for (i = 0; i < len; ++i) {
  44                 *ptr++ = hexdigits[digest[i] >> 4];
  45                 *ptr++ = hexdigits[digest[i] & 0xF];
  46         }
  47         *ptr = '\0';
  48
  49         return hex;
  50 }
  51
  52 #define http_etag_init() _http_etag_init(TSRMLS_C)
  53 static inline void *_http_etag_init(TSRMLS_D)
  54 {
  55         void *ctx = NULL;
  56         char *mode = HTTP_G(etag).mode;
  57
  58 #ifdef HTTP_HAVE_EXT_HASH
  59         php_hash_ops *eho = NULL;
  60
  61         if (mode && (eho = php_hash_fetch_ops(mode, strlen(mode)))) {
  62                 ctx = emalloc(eho->context_size);
  63                 eho->hash_init(ctx);
  64         } else
  65 #endif
  66         if (mode && ((!strcasecmp(mode, "crc32")) || (!strcasecmp(mode, "crc32b")))) {
  67                 ctx = emalloc(sizeof(uint));
  68                 *((uint *) ctx) = ~0;
  69         } else if (mode && !strcasecmp(mode, "sha1")) {
  70                 PHP_SHA1Init(ctx = emalloc(sizeof(PHP_SHA1_CTX)));
  71         } else {
  72                 PHP_MD5Init(ctx = emalloc(sizeof(PHP_MD5_CTX)));
  73         }
  74
  75         return ctx;
  76 }
  77
  78 #define http_etag_finish(c) _http_etag_finish((c) TSRMLS_CC)
  79 static inline char *_http_etag_finish(void *ctx TSRMLS_DC)
  80 {
  81         unsigned char digest[128] = {0};
  82         char *etag = NULL, *mode = HTTP_G(etag).mode;
  83
  84 #ifdef HTTP_HAVE_EXT_HASH
  85         php_hash_ops *eho = NULL;
  86
  87         if (mode && (eho = php_hash_fetch_ops(mode, strlen(mode)))) {
  88                 eho->hash_final(digest, ctx);
  89                 etag = http_etag_digest(digest, eho->digest_size);
  90         } else
  91 #endif
  92         if (mode && ((!strcasecmp(mode, "crc32")) || (!strcasecmp(mode, "crc32b")))) {
  93                 *((uint *) ctx) = ~*((uint *) ctx);
  94                 etag = http_etag_digest((const unsigned char *) ctx, sizeof(uint));
  95         } else if (mode && (!strcasecmp(mode, "sha1"))) {
  96                 PHP_SHA1Final(digest, ctx);
  97                 etag = http_etag_digest(digest, 20);
  98         } else {
  99                 PHP_MD5Final(digest, ctx);
 100                 etag = http_etag_digest(digest, 16);
 101         }
 102         efree(ctx);
 103
 104         return etag;
 105 }
 106
 107 #define http_etag_update(c, d, l) _http_etag_update((c), (d), (l) TSRMLS_CC)
 108 static inline void _http_etag_update(void *ctx, const char *data_ptr, size_t data_len TSRMLS_DC)
 109 {
 110         char *mode = HTTP_G(etag).mode;
 111 #ifdef HTTP_HAVE_EXT_HASH
 112         php_hash_ops *eho = NULL;
 113
 114         if (mode && (eho = php_hash_fetch_ops(mode, strlen(mode)))) {
 115                 eho->hash_update(ctx, (const unsigned char *) data_ptr, data_len);
 116         } else
 117 #endif
 118         if (mode && ((!strcasecmp(mode, "crc32")) || (!strcasecmp(mode, "crc32b")))) {
 119                 uint i, c = *((uint *) ctx);
 120                 for (i = 0; i < data_len; ++i) {
 121                         c = CRC32(c, data_ptr[i]);
 122                 }
 123                 *((uint *)ctx) = c;
 124         } else if (mode && (!strcasecmp(mode, "sha1"))) {
 125                 PHP_SHA1Update(ctx, (const unsigned char *) data_ptr, data_len);
 126         } else {
 127                 PHP_MD5Update(ctx, (const unsigned char *) data_ptr, data_len);
 128         }
 129 }
 130
 131 #define http_ob_etaghandler(o, l, ho, hl, m) _http_ob_etaghandler((o), (l), (ho), (hl), (m) TSRMLS_CC)
 132 extern void _http_ob_etaghandler(char *output, uint output_len, char **handled_output, uint *handled_output_len, int mode TSRMLS_DC);
 133
 134 #define http_etag(p, l, m) _http_etag((p), (l), (m) TSRMLS_CC)
 135 PHP_HTTP_API char *_http_etag(const void *data_ptr, size_t data_len, http_send_mode data_mode TSRMLS_DC);
 136
 137 #define http_last_modified(p, m) _http_last_modified((p), (m) TSRMLS_CC)
 138 PHP_HTTP_API time_t _http_last_modified(const void *data_ptr, http_send_mode data_mode TSRMLS_DC);
 139
 140 #define http_match_last_modified(entry, modified) _http_match_last_modified_ex((entry), (modified), 1 TSRMLS_CC)
 141 #define http_match_last_modified_ex(entry, modified, ep) _http_match_last_modified_ex((entry), (modified), (ep) TSRMLS_CC)
 142 PHP_HTTP_API zend_bool _http_match_last_modified_ex(const char *entry, time_t t, zend_bool enforce_presence TSRMLS_DC);
 143
 144 #define http_match_etag(entry, etag) _http_match_etag_ex((entry), (etag), 1 TSRMLS_CC)
 145 #define http_match_etag_ex(entry, etag, ep) _http_match_etag_ex((entry), (etag), (ep) TSRMLS_CC)
 146 PHP_HTTP_API zend_bool _http_match_etag_ex(const char *entry, const char *etag, zend_bool enforce_presence TSRMLS_DC);
 147
 148 #define http_cache_last_modified(l, s, cc, ccl) _http_cache_last_modified((l), (s), (cc), (ccl) TSRMLS_CC)
 149 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);
 150
 151 #define http_cache_etag(e, el, cc, ccl) _http_cache_etag((e), (el), (cc), (ccl) TSRMLS_CC)
 152 PHP_HTTP_API STATUS _http_cache_etag(const char *etag, size_t etag_len, const char *cache_control, size_t cc_len TSRMLS_DC);
 153
 154 #define http_start_ob_etaghandler() _http_start_ob_etaghandler(TSRMLS_C)
 155 PHP_HTTP_API STATUS _http_start_ob_etaghandler(TSRMLS_D);
 156 #define http_interrupt_ob_etaghandler() _http_interrupt_ob_etaghandler(TSRMLS_C)
 157 PHP_HTTP_API zend_bool _http_interrupt_ob_etaghandler(TSRMLS_D);
 158
 159 #endif
 160
 161 /*
 162  * Local variables:
 163  * tab-width: 4
 164  * c-basic-offset: 4
 165  * End:
 166  * vim600: noet sw=4 ts=4 fdm=marker
 167  * vim<600: noet sw=4 ts=4
 168  */
 169