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[FreeBSD/releng/9.2.git] / contrib / bind9 / bin / named / tkeyconf.c
1 /*
2  * Copyright (C) 2004-2007, 2009, 2010  Internet Systems Consortium, Inc. ("ISC")
3  * Copyright (C) 1999-2001  Internet Software Consortium.
4  *
5  * Permission to use, copy, modify, and/or distribute this software for any
6  * purpose with or without fee is hereby granted, provided that the above
7  * copyright notice and this permission notice appear in all copies.
8  *
9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15  * PERFORMANCE OF THIS SOFTWARE.
16  */
17
18 /* $Id: tkeyconf.c,v 1.33 2010/12/20 23:47:20 tbox Exp $ */
19
20 /*! \file */
21
22 #include <config.h>
23
24 #include <isc/buffer.h>
25 #include <isc/string.h>         /* Required for HP/UX (and others?) */
26 #include <isc/mem.h>
27
28 #include <isccfg/cfg.h>
29
30 #include <dns/fixedname.h>
31 #include <dns/keyvalues.h>
32 #include <dns/name.h>
33 #include <dns/tkey.h>
34
35 #include <dst/gssapi.h>
36
37 #include <named/tkeyconf.h>
38
39 #define RETERR(x) do { \
40         result = (x); \
41         if (result != ISC_R_SUCCESS) \
42                 goto failure; \
43         } while (0)
44
45 #include<named/log.h>
46 #define LOG(msg) \
47         isc_log_write(ns_g_lctx, \
48         NS_LOGCATEGORY_GENERAL, \
49         NS_LOGMODULE_SERVER, \
50         ISC_LOG_ERROR, \
51         "%s", msg)
52
53 isc_result_t
54 ns_tkeyctx_fromconfig(const cfg_obj_t *options, isc_mem_t *mctx,
55                       isc_entropy_t *ectx, dns_tkeyctx_t **tctxp)
56 {
57         isc_result_t result;
58         dns_tkeyctx_t *tctx = NULL;
59         const char *s;
60         isc_uint32_t n;
61         dns_fixedname_t fname;
62         dns_name_t *name;
63         isc_buffer_t b;
64         const cfg_obj_t *obj;
65         int type;
66
67         result = dns_tkeyctx_create(mctx, ectx, &tctx);
68         if (result != ISC_R_SUCCESS)
69                 return (result);
70
71         obj = NULL;
72         result = cfg_map_get(options, "tkey-dhkey", &obj);
73         if (result == ISC_R_SUCCESS) {
74                 s = cfg_obj_asstring(cfg_tuple_get(obj, "name"));
75                 n = cfg_obj_asuint32(cfg_tuple_get(obj, "keyid"));
76                 isc_buffer_init(&b, s, strlen(s));
77                 isc_buffer_add(&b, strlen(s));
78                 dns_fixedname_init(&fname);
79                 name = dns_fixedname_name(&fname);
80                 RETERR(dns_name_fromtext(name, &b, dns_rootname, 0, NULL));
81                 type = DST_TYPE_PUBLIC|DST_TYPE_PRIVATE|DST_TYPE_KEY;
82                 RETERR(dst_key_fromfile(name, (dns_keytag_t) n, DNS_KEYALG_DH,
83                                         type, NULL, mctx, &tctx->dhkey));
84         }
85
86         obj = NULL;
87         result = cfg_map_get(options, "tkey-domain", &obj);
88         if (result == ISC_R_SUCCESS) {
89                 s = cfg_obj_asstring(obj);
90                 isc_buffer_init(&b, s, strlen(s));
91                 isc_buffer_add(&b, strlen(s));
92                 dns_fixedname_init(&fname);
93                 name = dns_fixedname_name(&fname);
94                 RETERR(dns_name_fromtext(name, &b, dns_rootname, 0, NULL));
95                 tctx->domain = isc_mem_get(mctx, sizeof(dns_name_t));
96                 if (tctx->domain == NULL) {
97                         result = ISC_R_NOMEMORY;
98                         goto failure;
99                 }
100                 dns_name_init(tctx->domain, NULL);
101                 RETERR(dns_name_dup(name, mctx, tctx->domain));
102         }
103
104         obj = NULL;
105         result = cfg_map_get(options, "tkey-gssapi-credential", &obj);
106         if (result == ISC_R_SUCCESS) {
107                 s = cfg_obj_asstring(obj);
108
109                 isc_buffer_init(&b, s, strlen(s));
110                 isc_buffer_add(&b, strlen(s));
111                 dns_fixedname_init(&fname);
112                 name = dns_fixedname_name(&fname);
113                 RETERR(dns_name_fromtext(name, &b, dns_rootname, 0, NULL));
114                 RETERR(dst_gssapi_acquirecred(name, ISC_FALSE, &tctx->gsscred));
115         }
116
117         obj = NULL;
118         result = cfg_map_get(options, "tkey-gssapi-keytab", &obj);
119         if (result == ISC_R_SUCCESS) {
120                 s = cfg_obj_asstring(obj);
121                 tctx->gssapi_keytab = isc_mem_strdup(mctx, s);
122                 if (tctx->gssapi_keytab == NULL) {
123                         result = ISC_R_NOMEMORY;
124                         goto failure;
125                 }
126         }
127
128
129         *tctxp = tctx;
130         return (ISC_R_SUCCESS);
131
132  failure:
133         dns_tkeyctx_destroy(&tctx);
134         return (result);
135 }
136