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
|
/*
* Copyright (C) 1999-2001 Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
* INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $ISC: tsigconf.c,v 1.21 2001/08/03 18:39:50 bwelling Exp $ */
#include <config.h>
#include <isc/base64.h>
#include <isc/buffer.h>
#include <isc/mem.h>
#include <isc/string.h>
#include <isccfg/cfg.h>
#include <dns/tsig.h>
#include <dns/result.h>
#include <named/log.h>
#include <named/config.h>
#include <named/tsigconf.h>
static isc_result_t
add_initial_keys(cfg_obj_t *list, dns_tsig_keyring_t *ring, isc_mem_t *mctx) {
cfg_listelt_t *element;
cfg_obj_t *key = NULL;
char *keyid = NULL;
unsigned char *secret = NULL;
int secretalloc = 0;
int secretlen = 0;
isc_result_t ret;
isc_stdtime_t now;
for (element = cfg_list_first(list);
element != NULL;
element = cfg_list_next(element))
{
cfg_obj_t *algobj = NULL;
cfg_obj_t *secretobj = NULL;
dns_name_t keyname;
dns_name_t *alg;
char *algstr;
char keynamedata[1024];
isc_buffer_t keynamesrc, keynamebuf;
char *secretstr;
isc_buffer_t secretbuf;
key = cfg_listelt_value(element);
keyid = cfg_obj_asstring(cfg_map_getname(key));
algobj = NULL;
secretobj = NULL;
(void)cfg_map_get(key, "algorithm", &algobj);
(void)cfg_map_get(key, "secret", &secretobj);
INSIST(algobj != NULL && secretobj != NULL);
/*
* Create the key name.
*/
dns_name_init(&keyname, NULL);
isc_buffer_init(&keynamesrc, keyid, strlen(keyid));
isc_buffer_add(&keynamesrc, strlen(keyid));
isc_buffer_init(&keynamebuf, keynamedata, sizeof(keynamedata));
ret = dns_name_fromtext(&keyname, &keynamesrc, dns_rootname,
ISC_TRUE, &keynamebuf);
if (ret != ISC_R_SUCCESS)
goto failure;
/*
* Create the algorithm.
*/
algstr = cfg_obj_asstring(algobj);
if (ns_config_getkeyalgorithm(algstr, &alg) != ISC_R_SUCCESS) {
cfg_obj_log(algobj, ns_g_lctx, ISC_LOG_ERROR,
"key '%s': the only supported algorithm "
"is hmac-md5", keyid);
ret = DNS_R_BADALG;
goto failure;
}
secretstr = cfg_obj_asstring(secretobj);
secretalloc = secretlen = strlen(secretstr) * 3 / 4;
secret = isc_mem_get(mctx, secretlen);
if (secret == NULL) {
ret = ISC_R_NOMEMORY;
goto failure;
}
isc_buffer_init(&secretbuf, secret, secretlen);
ret = isc_base64_decodestring(secretstr, &secretbuf);
if (ret != ISC_R_SUCCESS)
goto failure;
secretlen = isc_buffer_usedlength(&secretbuf);
isc_stdtime_get(&now);
ret = dns_tsigkey_create(&keyname, alg, secret, secretlen,
ISC_FALSE, NULL, now, now,
mctx, ring, NULL);
isc_mem_put(mctx, secret, secretalloc);
secret = NULL;
if (ret != ISC_R_SUCCESS)
goto failure;
}
return (ISC_R_SUCCESS);
failure:
cfg_obj_log(key, ns_g_lctx, ISC_LOG_ERROR,
"configuring key '%s': %s", keyid,
isc_result_totext(ret));
if (secret != NULL)
isc_mem_put(mctx, secret, secretalloc);
return (ret);
}
isc_result_t
ns_tsigkeyring_fromconfig(cfg_obj_t *config, cfg_obj_t *vconfig,
isc_mem_t *mctx, dns_tsig_keyring_t **ringp)
{
cfg_obj_t *maps[3];
cfg_obj_t *keylist;
dns_tsig_keyring_t *ring = NULL;
isc_result_t result;
int i;
i = 0;
if (config != NULL)
maps[i++] = config;
if (vconfig != NULL)
maps[i++] = cfg_tuple_get(vconfig, "options");
maps[i] = NULL;
result = dns_tsigkeyring_create(mctx, &ring);
if (result != ISC_R_SUCCESS)
return (result);
for (i = 0; ; i++) {
if (maps[i] == NULL)
break;
keylist = NULL;
result = cfg_map_get(maps[i], "key", &keylist);
if (result != ISC_R_SUCCESS)
continue;
result = add_initial_keys(keylist, ring, mctx);
if (result != ISC_R_SUCCESS)
goto failure;
}
*ringp = ring;
return (ISC_R_SUCCESS);
failure:
dns_tsigkeyring_destroy(&ring);
return (result);
}
|
