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) 2004-2006, 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 "php_http_send_api.h"
  19
  20 #include "ext/standard/crc32.h"
  21 #include "ext/standard/sha1.h"
  22 #include "ext/standard/md5.h"
  23
  24 #if defined(HTTP_HAVE_PHP_HASH_H) && HTTP_HAVE_EXT(HASH)
  25 #       define HTTP_HAVE_EXT_HASH 1
  26 #       include "php_hash.h"
  27 #else
  28 #       define HTTP_HAVE_EXT_HASH 0
  29 #endif
  30
  31 #define http_etag_digest(d, l) _http_etag_digest((d), (l))
  32 static inline char *_http_etag_digest(const unsigned char *digest, int len)
  33 {
  34         static const char hexdigits[17] = "0123456789abcdef";
  35         int i;
  36         char *hex = emalloc(len * 2 + 1);
  37         char *ptr = hex;
  38
  39         for (i = 0; i < len; ++i) {
  40                 *ptr++ = hexdigits[digest[i] >> 4];
  41                 *ptr++ = hexdigits[digest[i] & 0xF];
  42         }
  43         *ptr = '\0';
  44
  45         return hex;
  46 }
  47
  48 #define http_etag_init() _http_etag_init(TSRMLS_C)
  49 static inline void *_http_etag_init(TSRMLS_D)
  50 {
  51         void *ctx = NULL;
  52         char *mode = HTTP_G->etag.mode;
  53
  54 #if HTTP_HAVE_EXT_HASH
  55         php_hash_ops *eho = NULL;
  56
  57         if (mode && (eho = php_hash_fetch_ops(mode, strlen(mode)))) {
  58                 ctx = emalloc(eho->context_size);
  59                 eho->hash_init(ctx);
  60         } else
  61 #endif
  62         if (mode && ((!strcasecmp(mode, "crc32")) || (!strcasecmp(mode, "crc32b")))) {
  63                 ctx = emalloc(sizeof(uint));
  64                 *((uint *) ctx) = ~0;
  65         } else if (mode && !strcasecmp(mode, "sha1")) {
  66                 PHP_SHA1Init(ctx = emalloc(sizeof(PHP_SHA1_CTX)));
  67         } else {
  68                 PHP_MD5Init(ctx = emalloc(sizeof(PHP_MD5_CTX)));
  69         }
  70
  71         return ctx;
  72 }
  73
  74 #define http_etag_finish(c) _http_etag_finish((c) TSRMLS_CC)
  75 static inline char *_http_etag_finish(void *ctx TSRMLS_DC)
  76 {
  77         unsigned char digest[128] = {0};
  78         char *etag = NULL, *mode = HTTP_G->etag.mode;
  79
  80 #if HTTP_HAVE_EXT_HASH
  81         php_hash_ops *eho = NULL;
  82
  83         if (mode && (eho = php_hash_fetch_ops(mode, strlen(mode)))) {
  84                 eho->hash_final(digest, ctx);
  85                 etag = http_etag_digest(digest, eho->digest_size);
  86         } else
  87 #endif
  88         if (mode && ((!strcasecmp(mode, "crc32")) || (!strcasecmp(mode, "crc32b")))) {
  89                 *((uint *) ctx) = ~*((uint *) ctx);
  90                 etag = http_etag_digest((const unsigned char *) ctx, sizeof(uint));
  91         } else if (mode && (!strcasecmp(mode, "sha1"))) {
  92                 PHP_SHA1Final(digest, ctx);
  93                 etag = http_etag_digest(digest, 20);
  94         } else {
  95                 PHP_MD5Final(digest, ctx);
  96                 etag = http_etag_digest(digest, 16);
  97         }
  98         efree(ctx);
  99
 100         return etag;
 101 }
 102
 103 #define http_etag_update(c, d, l) _http_etag_update((c), (d), (l) TSRMLS_CC)
 104 static inline void _http_etag_update(void *ctx, const char *data_ptr, size_t data_len TSRMLS_DC)
 105 {
 106         char *mode = HTTP_G->etag.mode;
 107 #if HTTP_HAVE_EXT_HASH
 108         php_hash_ops *eho = NULL;
 109
 110         if (mode && (eho = php_hash_fetch_ops(mode, strlen(mode)))) {
 111                 eho->hash_update(ctx, (const unsigned char *) data_ptr, data_len);
 112         } else
 113 #endif
 114         if (mode && ((!strcasecmp(mode, "crc32")) || (!strcasecmp(mode, "crc32b")))) {
 115                 uint i, c = *((uint *) ctx);
 116                 for (i = 0; i < data_len; ++i) {
 117                         CRC32(c, data_ptr[i]);
 118                 }
 119                 *((uint *)ctx) = c;
 120         } else if (mode && (!strcasecmp(mode, "sha1"))) {
 121                 PHP_SHA1Update(ctx, (const unsigned char *) data_ptr, data_len);
 122         } else {
 123                 PHP_MD5Update(ctx, (const unsigned char *) data_ptr, data_len);
 124         }
 125 }
 126
 127 #define http_ob_etaghandler(o, l, ho, hl, m) _http_ob_etaghandler((o), (l), (ho), (hl), (m) TSRMLS_CC)
 128 extern void _http_ob_etaghandler(char *output, uint output_len, char **handled_output, uint *handled_output_len, int mode TSRMLS_DC);
 129
 130 #define http_etag(p, l, m) _http_etag((p), (l), (m) TSRMLS_CC)
 131 PHP_HTTP_API char *_http_etag(const void *data_ptr, size_t data_len, http_send_mode data_mode TSRMLS_DC);
 132
 133 #define http_last_modified(p, m) _http_last_modified((p), (m) TSRMLS_CC)
 134 PHP_HTTP_API time_t _http_last_modified(const void *data_ptr, http_send_mode data_mode TSRMLS_DC);
 135
 136 #define http_match_last_modified(entry, modified) _http_match_last_modified_ex((entry), (modified), 1 TSRMLS_CC)
 137 #define http_match_last_modified_ex(entry, modified, ep) _http_match_last_modified_ex((entry), (modified), (ep) TSRMLS_CC)
 138 PHP_HTTP_API zend_bool _http_match_last_modified_ex(const char *entry, time_t t, zend_bool enforce_presence TSRMLS_DC);
 139
 140 #define http_match_etag(entry, etag) _http_match_etag_ex((entry), (etag), 1 TSRMLS_CC)
 141 #define http_match_etag_ex(entry, etag, ep) _http_match_etag_ex((entry), (etag), (ep) TSRMLS_CC)
 142 PHP_HTTP_API zend_bool _http_match_etag_ex(const char *entry, const char *etag, zend_bool enforce_presence TSRMLS_DC);
 143
 144 #define http_cache_last_modified(l, s, cc, ccl) _http_cache_last_modified((l), (s), (cc), (ccl) TSRMLS_CC)
 145 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);
 146
 147 #define http_cache_etag(e, el, cc, ccl) _http_cache_etag((e), (el), (cc), (ccl) TSRMLS_CC)
 148 PHP_HTTP_API STATUS _http_cache_etag(const char *etag, size_t etag_len, const char *cache_control, size_t cc_len TSRMLS_DC);
 149
 150 #define http_start_ob_etaghandler() _http_start_ob_etaghandler(TSRMLS_C)
 151 PHP_HTTP_API STATUS _http_start_ob_etaghandler(TSRMLS_D);
 152 #define http_interrupt_ob_etaghandler() _http_interrupt_ob_etaghandler(TSRMLS_C)
 153 PHP_HTTP_API zend_bool _http_interrupt_ob_etaghandler(TSRMLS_D);
 154
 155 #endif
 156
 157 /*
 158  * Local variables:
 159  * tab-width: 4
 160  * c-basic-offset: 4
 161  * End:
 162  * vim600: noet sw=4 ts=4 fdm=marker
 163  * vim<600: noet sw=4 ts=4
 164  */
 165