git.m6w6.name Git - m6w6/ext-http/blob - src/php_http_etag.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) 2004-2014, Michael Wallner <mike@php.net>            |
  10     +--------------------------------------------------------------------+
  11 */
  12
  13 #ifndef PHP_HTTP_ETAG_H
  14 #define PHP_HTTP_ETAG_H
  15
  16 typedef struct php_http_etag {
  17         void *ctx;
  18         char *mode;
  19 } php_http_etag_t;
  20
  21 PHP_HTTP_API php_http_etag_t *php_http_etag_init(const char *mode);
  22 PHP_HTTP_API size_t php_http_etag_update(php_http_etag_t *e, const char *data_ptr, size_t data_len);
  23 PHP_HTTP_API char *php_http_etag_finish(php_http_etag_t *e);
  24
  25 static inline char *php_http_etag_digest(const unsigned char *digest, int len)
  26 {
  27         static const char hexdigits[17] = "0123456789abcdef";
  28         int i;
  29         char *hex = emalloc(len * 2 + 1);
  30         char *ptr = hex;
  31
  32         for (i = 0; i < len; ++i) {
  33                 *ptr++ = hexdigits[digest[i] >> 4];
  34                 *ptr++ = hexdigits[digest[i] & 0xF];
  35         }
  36         *ptr = '\0';
  37
  38         return hex;
  39 }
  40
  41 #endif /* PHP_HTTP_ETAG_H */
  42
  43 /*
  44  * Local variables:
  45  * tab-width: 4
  46  * c-basic-offset: 4
  47  * End:
  48  * vim600: noet sw=4 ts=4 fdm=marker
  49  * vim<600: noet sw=4 ts=4
  50  */
  51