Line data Source code
1 : /* ks-engine-finger.c - Finger OpenPGP key access
2 : * Copyright (C) 2011 Free Software Foundation, Inc.
3 : *
4 : * This file is part of GnuPG.
5 : *
6 : * GnuPG is free software; you can redistribute it and/or modify
7 : * it under the terms of the GNU General Public License as published by
8 : * the Free Software Foundation; either version 3 of the License, or
9 : * (at your option) any later version.
10 : *
11 : * GnuPG is distributed in the hope that it will be useful,
12 : * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 : * GNU General Public License for more details.
15 : *
16 : * You should have received a copy of the GNU General Public License
17 : * along with this program; if not, see <http://www.gnu.org/licenses/>.
18 : */
19 :
20 : #include <config.h>
21 :
22 : #include <stdio.h>
23 : #include <stdlib.h>
24 : #include <string.h>
25 : #include <assert.h>
26 :
27 : #include "dirmngr.h"
28 : #include "misc.h"
29 : #include "userids.h"
30 : #include "ks-engine.h"
31 :
32 : /* Print a help output for the schemata supported by this module. */
33 : gpg_error_t
34 0 : ks_finger_help (ctrl_t ctrl, parsed_uri_t uri)
35 : {
36 0 : char const data[] =
37 : "Handler for FINGER:\n"
38 : " finger:<user>@<host>\n"
39 : "Supported methods: fetch\n"
40 : "Example:\n"
41 : " finger:joe@example.org\n";
42 : gpg_error_t err;
43 :
44 0 : if (!uri)
45 0 : err = ks_print_help (ctrl, " finger");
46 0 : else if (!strcmp (uri->scheme, "finger"))
47 0 : err = ks_print_help (ctrl, data);
48 : else
49 0 : err = 0;
50 :
51 0 : return err;
52 : }
53 :
54 :
55 : /* Get the key from URI which is expected to specify a finger scheme.
56 : On success R_FP has an open stream to read the data. */
57 : gpg_error_t
58 0 : ks_finger_fetch (ctrl_t ctrl, parsed_uri_t uri, estream_t *r_fp)
59 : {
60 : gpg_error_t err;
61 : estream_t fp;
62 : char *server;
63 : char *name;
64 : http_t http;
65 :
66 : (void)ctrl;
67 0 : *r_fp = NULL;
68 :
69 0 : if (strcmp (uri->scheme, "finger") || !uri->opaque || !uri->path)
70 0 : return gpg_error (GPG_ERR_INV_ARG);
71 :
72 0 : name = xtrystrdup (uri->path);
73 0 : if (!name)
74 0 : return gpg_error_from_syserror ();
75 :
76 0 : server = strchr (name, '@');
77 0 : if (!server)
78 : {
79 0 : err = gpg_error (GPG_ERR_INV_URI);
80 0 : xfree (name);
81 0 : return err;
82 : }
83 0 : *server++ = 0;
84 :
85 0 : err = http_raw_connect (&http, server, 79,
86 0 : (opt.use_tor? HTTP_FLAG_FORCE_TOR : 0), NULL);
87 0 : if (err)
88 : {
89 0 : xfree (name);
90 0 : return err;
91 : }
92 :
93 0 : fp = http_get_write_ptr (http);
94 0 : if (!fp)
95 : {
96 0 : err = gpg_error (GPG_ERR_INTERNAL);
97 0 : http_close (http, 0);
98 0 : xfree (name);
99 0 : return err;
100 : }
101 :
102 0 : if (es_fputs (name, fp) || es_fputs ("\r\n", fp) || es_fflush (fp))
103 : {
104 0 : err = gpg_error_from_syserror ();
105 0 : http_close (http, 0);
106 0 : xfree (name);
107 0 : return err;
108 : }
109 0 : xfree (name);
110 0 : es_fclose (fp);
111 :
112 0 : fp = http_get_read_ptr (http);
113 0 : if (!fp)
114 : {
115 0 : err = gpg_error (GPG_ERR_INTERNAL);
116 0 : http_close (http, 0);
117 0 : return err;
118 : }
119 :
120 0 : http_close (http, 1 /* Keep read ptr. */);
121 :
122 0 : *r_fp = fp;
123 0 : return 0;
124 : }
|