1/***************************************************************************
2 *                                  _   _ ____  _
3 *  Project                     ___| | | |  _ \| |
4 *                             / __| | | | |_) | |
5 *                            | (__| |_| |  _ <| |___
6 *                             \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 2010, 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at http://curl.haxx.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 ***************************************************************************/
22
23/* client-local setup.h */
24#include "setup.h"
25#include <curl/curl.h>
26#include "xattr.h"
27
28#ifdef HAVE_FSETXATTR
29#include <sys/types.h>
30#include <string.h>
31#include <sys/xattr.h> /* include header from libc, not from libattr */
32
33/* mapping table of curl metadata to extended attribute names */
34static const struct xattr_mapping {
35  const char *attr; /* name of the xattr */
36  CURLINFO info;
37} mappings[] = {
38  /* mappings proposed by
39   * http://freedesktop.org/wiki/CommonExtendedAttributes
40   */
41  { "user.xdg.origin.url", CURLINFO_EFFECTIVE_URL },
42  { "user.mime_type", CURLINFO_CONTENT_TYPE },
43  { NULL, CURLINFO_NONE } /* last element, abort loop here */
44};
45
46/* store metadata from the curl request alongside the downloaded
47 * file using extended attributes
48 */
49int fwrite_xattr(CURL *curl, int fd)
50{
51  int i = 0;
52  int err = 0;
53  /* loop through all xattr-curlinfo pairs and abort on a set error */
54  while(err == 0 && mappings[i].attr != NULL) {
55    char *value = NULL;
56    CURLcode rc = curl_easy_getinfo(curl, mappings[i].info, &value);
57    if(rc == CURLE_OK && value) {
58#ifdef HAVE_FSETXATTR_6
59      err = fsetxattr( fd, mappings[i].attr, value, strlen(value), 0, 0 );
60#elif defined(HAVE_FSETXATTR_5)
61      err = fsetxattr( fd, mappings[i].attr, value, strlen(value), 0 );
62#endif
63    }
64    i++;
65  }
66  return err;
67}
68#else
69int fwrite_xattr(CURL *curl, int fd)
70{
71  (void)curl;
72  (void)fd;
73  return 0;
74}
75#endif
76