git.m6w6.name Git - m6w6/ext-http/blob - src/php_http_etag.c

   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 #include "php_http_api.h"
  14
  15 #include "ext/hash/php_hash.h"
  16 #include "ext/standard/crc32.h"
  17 #include "ext/standard/sha1.h"
  18 #include "ext/standard/md5.h"
  19
  20 php_http_etag_t *php_http_etag_init(const char *mode)
  21 {
  22         php_http_etag_t *e;
  23         zend_string *mode_str = zend_string_init(mode, strlen(mode), 0);
  24         const php_hash_ops *eho = php_hash_fetch_ops(mode_str);
  25
  26         if (!eho) {
  27                 zend_string_release(mode_str);
  28                 return NULL;
  29         }
  30         zend_string_release(mode_str);
  31
  32         e = emalloc(sizeof(*e) + eho->context_size - 1);
  33         e->ops = eho;
  34         eho->hash_init(e->ctx);
  35
  36         return e;
  37 }
  38
  39 char *php_http_etag_finish(php_http_etag_t *e)
  40 {
  41         unsigned char digest[128] = {0};
  42         char *etag;
  43
  44         e->ops->hash_final(digest, e->ctx);
  45         etag = php_http_etag_digest(digest, e->ops->digest_size);
  46         efree(e);
  47
  48         return etag;
  49 }
  50
  51 size_t php_http_etag_update(php_http_etag_t *e, const char *data_ptr, size_t data_len)
  52 {
  53         e->ops->hash_update(e->ctx, (const unsigned char *) data_ptr, data_len);
  54
  55         return data_len;
  56 }
  57
  58
  59 /*
  60  * Local variables:
  61  * tab-width: 4
  62  * c-basic-offset: 4
  63  * End:
  64  * vim600: noet sw=4 ts=4 fdm=marker
  65  * vim<600: noet sw=4 ts=4
  66  */
  67