1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
/* xattr.h -- POSIX Extended Attribute support.
Copyright (C) 2016 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>. */
#include "wget.h"
#include <stdio.h>
#include <string.h>
#include "log.h"
#include "xattr.h"
#ifdef USE_XATTR
static int
write_xattr_metadata (const char *name, const char *value, FILE *fp)
{
int retval = -1;
if (name && value && fp)
{
retval = fsetxattr (fileno (fp), name, value, strlen (value), 0);
/* FreeBSD's extattr_set_fd returns the length of the extended attribute. */
retval = (retval < 0) ? retval : 0;
if (retval)
DEBUGP (("Failed to set xattr %s.\n", quote(name)));
}
return retval;
}
#else /* USE_XATTR */
static int
write_xattr_metadata (const char *name, const char *value, FILE *fp)
{
(void)name;
(void)value;
(void)fp;
return 0;
}
#endif /* USE_XATTR */
int
set_file_metadata (const char *origin_url, const char *referrer_url, FILE *fp)
{
/* Save metadata about where the file came from (requested, final URLs) to
* user POSIX Extended Attributes of retrieved file.
*
* For more details about the user namespace see
* [http://freedesktop.org/wiki/CommonExtendedAttributes] and
* [http://0pointer.de/lennart/projects/mod_mime_xattr/].
*/
int retval = -1;
if (!origin_url || !fp)
return retval;
retval = write_xattr_metadata ("user.xdg.origin.url", escnonprint_uri (origin_url), fp);
if ((!retval) && referrer_url)
retval = write_xattr_metadata ("user.xdg.referrer.url", escnonprint_uri (referrer_url), fp);
return retval;
}
|
