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
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
/*
* relay-network.c - network functions for relay plugin
*
* Copyright (C) 2003-2024 Sébastien Helleu <flashcode@flashtux.org>
*
* This file is part of WeeChat, the extensible chat client.
*
* WeeChat 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 of the License, or
* (at your option) any later version.
*
* WeeChat 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 WeeChat. If not, see <https://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <unistd.h>
#include <gnutls/gnutls.h>
#include "../weechat-plugin.h"
#include "relay.h"
#include "relay-network.h"
#include "relay-config.h"
int relay_network_init_ok = 0;
int relay_network_init_tls_cert_key_ok = 0;
gnutls_certificate_credentials_t relay_gnutls_x509_cred;
gnutls_priority_t *relay_gnutls_priority_cache = NULL;
gnutls_dh_params_t *relay_gnutls_dh_params = NULL;
/*
* Sets TLS certificate/key file.
*
* If verbose == 1, a message is displayed if successful, otherwise a warning
* (if no cert/key found in file).
*/
void
relay_network_set_tls_cert_key (int verbose)
{
const char *ptr_path;
char *certkey_path;
int ret;
struct t_hashtable *options;
gnutls_certificate_free_credentials (relay_gnutls_x509_cred);
gnutls_certificate_allocate_credentials (&relay_gnutls_x509_cred);
relay_network_init_tls_cert_key_ok = 0;
ptr_path = weechat_config_string (relay_config_network_tls_cert_key);
if (!ptr_path || !ptr_path[0])
{
if (verbose)
{
weechat_printf (NULL,
_("%s%s: no TLS certificate/key found (option "
"relay.network.tls_cert_key is empty)"),
weechat_prefix ("error"), RELAY_PLUGIN_NAME);
}
return;
}
options = weechat_hashtable_new (
32,
WEECHAT_HASHTABLE_STRING,
WEECHAT_HASHTABLE_STRING,
NULL, NULL);
if (options)
weechat_hashtable_set (options, "directory", "config");
certkey_path = weechat_string_eval_path_home (ptr_path,
NULL, NULL, options);
weechat_hashtable_free (options);
if (certkey_path && certkey_path[0])
{
if (access (certkey_path, R_OK) == 0)
{
ret = gnutls_certificate_set_x509_key_file (relay_gnutls_x509_cred,
certkey_path,
certkey_path,
GNUTLS_X509_FMT_PEM);
if (ret >= 0)
{
relay_network_init_tls_cert_key_ok = 1;
if (verbose)
{
weechat_printf (NULL,
_("%s: TLS certificate and key have been "
"set"),
RELAY_PLUGIN_NAME);
}
}
else
{
if (verbose)
{
weechat_printf (NULL,
_("%s%s: gnutls error: %s: %s "
"(option relay.network.tls_cert_key)"),
weechat_prefix ("error"),
RELAY_PLUGIN_NAME,
gnutls_strerror_name (ret),
gnutls_strerror (ret));
}
}
}
else
{
if (verbose)
{
weechat_printf (NULL,
_("%s%s: error: file with TLS certificate/key "
"is not readable: \"%s\" "
"(option relay.network.tls_cert_key)"),
weechat_prefix ("error"), RELAY_PLUGIN_NAME,
certkey_path);
}
}
}
free (certkey_path);
}
/*
* Sets gnutls priority cache.
*/
void
relay_network_set_priority ()
{
if (gnutls_priority_init (relay_gnutls_priority_cache,
weechat_config_string (
relay_config_network_tls_priorities),
NULL) != GNUTLS_E_SUCCESS)
{
weechat_printf (NULL,
_("%s%s: unable to initialize priority for TLS"),
weechat_prefix ("error"), RELAY_PLUGIN_NAME);
free (relay_gnutls_priority_cache);
relay_gnutls_priority_cache = NULL;
}
}
/*
* Initializes network for relay.
*/
void
relay_network_init ()
{
relay_network_init_ok = 0;
relay_network_init_tls_cert_key_ok = 0;
/* credentials */
gnutls_certificate_allocate_credentials (&relay_gnutls_x509_cred);
relay_network_set_tls_cert_key (0);
/* priority */
relay_gnutls_priority_cache = malloc (sizeof (*relay_gnutls_priority_cache));
if (relay_gnutls_priority_cache)
relay_network_set_priority ();
relay_network_init_ok = 1;
}
/*
* Ends network for relay.
*/
void
relay_network_end ()
{
if (relay_network_init_ok)
{
if (relay_gnutls_priority_cache)
{
gnutls_priority_deinit (*relay_gnutls_priority_cache);
free (relay_gnutls_priority_cache);
relay_gnutls_priority_cache = NULL;
}
if (relay_gnutls_dh_params)
{
gnutls_dh_params_deinit (*relay_gnutls_dh_params);
free (relay_gnutls_dh_params);
relay_gnutls_dh_params = NULL;
}
gnutls_certificate_free_credentials (relay_gnutls_x509_cred);
relay_network_init_ok = 0;
}
}
|
