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) 2004-2007, 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 #ifdef HTTP_HAVE_HASH
  25 #       include "php_hash.h"
  26 #endif
  27
  28 #define http_etag_digest(d, l) _http_etag_digest((d), (l))
  29 static inline char *_http_etag_digest(const unsigned char *digest, int len)
  30 {
  31         static const char hexdigits[17] = "0123456789abcdef";
  32         int i;
  33         char *hex = emalloc(len * 2 + 1);
  34         char *ptr = hex;
  35
  36         for (i = 0; i < len; ++i) {
  37                 *ptr++ = hexdigits[digest[i] >> 4];
  38                 *ptr++ = hexdigits[digest[i] & 0xF];
  39         }
  40         *ptr = '\0';
  41
  42         return hex;
  43 }
  44
  45 #define http_etag_init() _http_etag_init(TSRMLS_C)
  46 static inline void *_http_etag_init(TSRMLS_D)
  47 {
  48         void *ctx = NULL;
  49         char *mode = HTTP_G->etag.mode;
  50
  51 #ifdef HTTP_HAVE_HASH
  52         const php_hash_ops *eho = NULL;
  53
  54         if (mode && (eho = php_hash_fetch_ops(mode, strlen(mode)))) {
  55                 ctx = emalloc(eho->context_size);
  56                 eho->hash_init(ctx);
  57         } else
  58 #endif
  59         if (mode && ((!strcasecmp(mode, "crc32")) || (!strcasecmp(mode, "crc32b")))) {
  60                 ctx = emalloc(sizeof(uint));
  61                 *((uint *) ctx) = ~0;
  62         } else if (mode && !strcasecmp(mode, "sha1")) {
  63                 PHP_SHA1Init(ctx = emalloc(sizeof(PHP_SHA1_CTX)));
  64         } else {
  65                 PHP_MD5Init(ctx = emalloc(sizeof(PHP_MD5_CTX)));
  66         }
  67
  68         return ctx;
  69 }
  70
  71 #define http_etag_finish(c) _http_etag_finish((c) TSRMLS_CC)
  72 static inline char *_http_etag_finish(void *ctx TSRMLS_DC)
  73 {
  74         unsigned char digest[128] = {0};
  75         char *etag = NULL, *mode = HTTP_G->etag.mode;
  76
  77 #ifdef HTTP_HAVE_HASH
  78         const php_hash_ops *eho = NULL;
  79
  80         if (mode && (eho = php_hash_fetch_ops(mode, strlen(mode)))) {
  81                 eho->hash_final(digest, ctx);
  82                 etag = http_etag_digest(digest, eho->digest_size);
  83         } else
  84 #endif
  85         if (mode && ((!strcasecmp(mode, "crc32")) || (!strcasecmp(mode, "crc32b")))) {
  86                 *((uint *) ctx) = ~*((uint *) ctx);
  87                 etag = http_etag_digest((const unsigned char *) ctx, sizeof(uint));
  88         } else if (mode && (!strcasecmp(mode, "sha1"))) {
  89                 PHP_SHA1Final(digest, ctx);
  90                 etag = http_etag_digest(digest, 20);
  91         } else {
  92                 PHP_MD5Final(digest, ctx);
  93                 etag = http_etag_digest(digest, 16);
  94         }
  95         efree(ctx);
  96
  97         return etag;
  98 }
  99
 100 #define http_etag_update(c, d, l) _http_etag_update((c), (d), (l) TSRMLS_CC)
 101 static inline void _http_etag_update(void *ctx, const char *data_ptr, size_t data_len TSRMLS_DC)
 102 {
 103         char *mode = HTTP_G->etag.mode;
 104 #ifdef HTTP_HAVE_HASH
 105         const php_hash_ops *eho = NULL;
 106
 107         if (mode && (eho = php_hash_fetch_ops(mode, strlen(mode)))) {
 108                 eho->hash_update(ctx, (const unsigned char *) data_ptr, data_len);
 109         } else
 110 #endif
 111         if (mode && ((!strcasecmp(mode, "crc32")) || (!strcasecmp(mode, "crc32b")))) {
 112                 uint i, c = *((uint *) ctx);
 113                 for (i = 0; i < data_len; ++i) {
 114                         CRC32(c, data_ptr[i]);
 115                 }
 116                 *((uint *)ctx) = c;
 117         } else if (mode && (!strcasecmp(mode, "sha1"))) {
 118                 PHP_SHA1Update(ctx, (const unsigned char *) data_ptr, data_len);
 119         } else {
 120                 PHP_MD5Update(ctx, (const unsigned char *) data_ptr, data_len);
 121         }
 122 }
 123
 124 #define http_ob_etaghandler(o, l, ho, hl, m) _http_ob_etaghandler((o), (l), (ho), (hl), (m) TSRMLS_CC)
 125 extern void _http_ob_etaghandler(char *output, uint output_len, char **handled_output, uint *handled_output_len, int mode TSRMLS_DC);
 126
 127 #define http_etag(p, l, m) _http_etag((p), (l), (m) TSRMLS_CC)
 128 PHP_HTTP_API char *_http_etag(const void *data_ptr, size_t data_len, http_send_mode data_mode TSRMLS_DC);
 129
 130 #define http_last_modified(p, m) _http_last_modified((p), (m) TSRMLS_CC)
 131 PHP_HTTP_API time_t _http_last_modified(const void *data_ptr, http_send_mode data_mode TSRMLS_DC);
 132
 133 #define http_match_last_modified(entry, modified) _http_match_last_modified_ex((entry), (modified), 1 TSRMLS_CC)
 134 #define http_match_last_modified_ex(entry, modified, ep) _http_match_last_modified_ex((entry), (modified), (ep) TSRMLS_CC)
 135 PHP_HTTP_API zend_bool _http_match_last_modified_ex(const char *entry, time_t t, zend_bool enforce_presence TSRMLS_DC);
 136
 137 #define http_match_etag(entry, etag) _http_match_etag_ex((entry), (etag), 1 TSRMLS_CC)
 138 #define http_match_etag_ex(entry, etag, ep) _http_match_etag_ex((entry), (etag), (ep) TSRMLS_CC)
 139 PHP_HTTP_API zend_bool _http_match_etag_ex(const char *entry, const char *etag, zend_bool enforce_presence TSRMLS_DC);
 140
 141 #define http_cache_last_modified(l, s, cc, ccl) _http_cache_last_modified((l), (s), (cc), (ccl) TSRMLS_CC)
 142 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);
 143
 144 #define http_cache_etag(e, el, cc, ccl) _http_cache_etag((e), (el), (cc), (ccl) TSRMLS_CC)
 145 PHP_HTTP_API STATUS _http_cache_etag(const char *etag, size_t etag_len, const char *cache_control, size_t cc_len TSRMLS_DC);
 146
 147 #define http_start_ob_etaghandler() _http_start_ob_etaghandler(TSRMLS_C)
 148 PHP_HTTP_API STATUS _http_start_ob_etaghandler(TSRMLS_D);
 149 #define http_interrupt_ob_etaghandler() _http_interrupt_ob_etaghandler(TSRMLS_C)
 150 PHP_HTTP_API zend_bool _http_interrupt_ob_etaghandler(TSRMLS_D);
 151
 152 #endif
 153
 154 /*
 155  * Local variables:
 156  * tab-width: 4
 157  * c-basic-offset: 4
 158  * End:
 159  * vim600: noet sw=4 ts=4 fdm=marker
 160  * vim<600: noet sw=4 ts=4
 161  */
 162