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#include <sys/types.h>
#include <sys/xattr.h> /* include header from libc, not from libattr */
#include <string.h>
#include <curl/curl.h>
#include "xattr.h"
/* mapping table of curl metadata to extended attribute names */
static struct xattr_mapping {
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, 0 } /* last element, abort loop here */
};
/* store metadata from the curl request alongside the downloaded
* file using extended attributes
*/
int write_xattr( CURL *curl, const char *filename )
{
int i = 0;
int err = 0;
/* loop through all xattr-curlinfo pairs and abort on error */
while ( err == 0 && mappings[i].attr != NULL ) {
char *value = NULL;
curl_easy_getinfo(curl, mappings[i].info, &value);
if (value) {
err = setxattr( filename, mappings[i].attr, value, strlen(value), 0 );
}
i++;
}
return err;
}
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