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comparison mupdf-source/thirdparty/curl/src/tool_xattr.c @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2019, 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 https://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 #include "tool_setup.h"
23
24 #ifdef HAVE_FSETXATTR
25 # include <sys/xattr.h> /* header from libc, not from libattr */
26 # define USE_XATTR
27 #elif defined(__FreeBSD_version) && (__FreeBSD_version > 500000)
28 # include <sys/types.h>
29 # include <sys/extattr.h>
30 # define USE_XATTR
31 #endif
32
33 #include "tool_xattr.h"
34
35 #include "memdebug.h" /* keep this as LAST include */
36
37 #ifdef USE_XATTR
38
39 /* mapping table of curl metadata to extended attribute names */
40 static const struct xattr_mapping {
41 const char *attr; /* name of the xattr */
42 CURLINFO info;
43 } mappings[] = {
44 /* mappings proposed by
45 * https://freedesktop.org/wiki/CommonExtendedAttributes/
46 */
47 { "user.xdg.origin.url", CURLINFO_EFFECTIVE_URL },
48 { "user.mime_type", CURLINFO_CONTENT_TYPE },
49 { NULL, CURLINFO_NONE } /* last element, abort loop here */
50 };
51
52 /* returns TRUE if a new URL is returned, that then needs to be freed */
53 /* @unittest: 1621 */
54 #ifdef UNITTESTS
55 bool stripcredentials(char **url);
56 #else
57 static
58 #endif
59 bool stripcredentials(char **url)
60 {
61 CURLU *u;
62 CURLUcode uc;
63 char *nurl;
64 u = curl_url();
65 if(u) {
66 uc = curl_url_set(u, CURLUPART_URL, *url, 0);
67 if(uc)
68 goto error;
69
70 uc = curl_url_set(u, CURLUPART_USER, NULL, 0);
71 if(uc)
72 goto error;
73
74 uc = curl_url_set(u, CURLUPART_PASSWORD, NULL, 0);
75 if(uc)
76 goto error;
77
78 uc = curl_url_get(u, CURLUPART_URL, &nurl, 0);
79 if(uc)
80 goto error;
81
82 curl_url_cleanup(u);
83
84 *url = nurl;
85 return TRUE;
86 }
87 error:
88 curl_url_cleanup(u);
89 return FALSE;
90 }
91
92 /* store metadata from the curl request alongside the downloaded
93 * file using extended attributes
94 */
95 int fwrite_xattr(CURL *curl, int fd)
96 {
97 int i = 0;
98 int err = 0;
99
100 /* loop through all xattr-curlinfo pairs and abort on a set error */
101 while(err == 0 && mappings[i].attr != NULL) {
102 char *value = NULL;
103 CURLcode result = curl_easy_getinfo(curl, mappings[i].info, &value);
104 if(!result && value) {
105 bool freeptr = FALSE;
106 if(CURLINFO_EFFECTIVE_URL == mappings[i].info)
107 freeptr = stripcredentials(&value);
108 if(value) {
109 #ifdef HAVE_FSETXATTR_6
110 err = fsetxattr(fd, mappings[i].attr, value, strlen(value), 0, 0);
111 #elif defined(HAVE_FSETXATTR_5)
112 err = fsetxattr(fd, mappings[i].attr, value, strlen(value), 0);
113 #elif defined(__FreeBSD_version)
114 {
115 ssize_t rc = extattr_set_fd(fd, EXTATTR_NAMESPACE_USER,
116 mappings[i].attr, value, strlen(value));
117 /* FreeBSD's extattr_set_fd returns the length of the extended
118 attribute */
119 err = (rc < 0 ? -1 : 0);
120 }
121 #endif
122 if(freeptr)
123 curl_free(value);
124 }
125 }
126 i++;
127 }
128
129 return err;
130 }
131 #else
132 int fwrite_xattr(CURL *curl, int fd)
133 {
134 (void)curl;
135 (void)fd;
136
137 return 0;
138 }
139 #endif