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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
***************************************************************************/
#include "tool_setup.h"

#ifdef HAVE_FSETXATTR
# include <sys/xattr.h> /* header from libc, not from libattr */
#endif

#include "tool_xattr.h"

#include "memdebug.h" /* keep this as LAST include */

#ifdef HAVE_FSETXATTR

/* mapping table of curl metadata to extended attribute names */
static const struct xattr_mapping {
  const char *attr; /* name of the xattr */
  CURLINFO info;
} mappings[] = {
  /* mappings proposed by
* http://freedesktop.org/wiki/CommonExtendedAttributes
*/
  { "user.xdg.origin.url", CURLINFO_EFFECTIVE_URL },
  { "user.mime_type", CURLINFO_CONTENT_TYPE },
  { NULL, CURLINFO_NONE } /* last element, abort loop here */
};

/* store metadata from the curl request alongside the downloaded
* file using extended attributes
*/
int fwrite_xattr(CURL *curl, int fd)
{
  int i = 0;
  int err = 0;
  /* loop through all xattr-curlinfo pairs and abort on a set error */
  while(err == 0 && mappings[i].attr != NULL) {
    char *value = NULL;
    CURLcode rc = curl_easy_getinfo(curl, mappings[i].info, &value);
    if(rc == CURLE_OK && value) {
#ifdef HAVE_FSETXATTR_6
      err = fsetxattr(fd, mappings[i].attr, value, strlen(value), 0, 0);
#elif defined(HAVE_FSETXATTR_5)
      err = fsetxattr(fd, mappings[i].attr, value, strlen(value), 0);
#endif
    }
    i++;
  }
  return err;
}
#else
int fwrite_xattr(CURL *curl, int fd)
{
  (void)curl;
  (void)fd;
  return 0;
}
#endif
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