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