2 * Copyright(c) 2009-2010,2013 by Internet Systems Consortium, Inc.("ISC")
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
14 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 * Internet Systems Consortium, Inc.
18 * Redwood City, CA 94063
24 /*Trying to figure out what we need to define to get things to work.
25 It looks like we want/need the export library but need the fdwatchcommand
26 which may be a problem */
33 dhcp_context_t dhcp_gbl_ctx
;
38 #if defined (NSUPDATE)
39 if (dhcp_gbl_ctx
.dnsclient
!= NULL
)
40 dns_client_destroy((dns_client_t
**)&dhcp_gbl_ctx
.dnsclient
);
43 if (dhcp_gbl_ctx
.task
!= NULL
) {
44 isc_task_shutdown(dhcp_gbl_ctx
.task
);
45 isc_task_detach(&dhcp_gbl_ctx
.task
);
48 if (dhcp_gbl_ctx
.timermgr
!= NULL
)
49 isc_timermgr_destroy(&dhcp_gbl_ctx
.timermgr
);
51 if (dhcp_gbl_ctx
.socketmgr
!= NULL
)
52 isc_socketmgr_destroy(&dhcp_gbl_ctx
.socketmgr
);
54 if (dhcp_gbl_ctx
.taskmgr
!= NULL
)
55 isc_taskmgr_destroy(&dhcp_gbl_ctx
.taskmgr
);
57 if (dhcp_gbl_ctx
.actx_started
!= ISC_FALSE
) {
58 isc_app_ctxfinish(dhcp_gbl_ctx
.actx
);
59 dhcp_gbl_ctx
.actx_started
= ISC_FALSE
;
62 if (dhcp_gbl_ctx
.actx
!= NULL
)
63 isc_appctx_destroy(&dhcp_gbl_ctx
.actx
);
65 if (dhcp_gbl_ctx
.mctx
!= NULL
)
66 isc_mem_detach(&dhcp_gbl_ctx
.mctx
);
72 dhcp_context_create(void) {
76 * Set up the error messages, this isn't the right place
77 * for this call but it is convienent for now.
79 result
= dhcp_result_register();
80 if (result
!= ISC_R_SUCCESS
) {
81 log_fatal("register_table() %s: %u", "failed", result
);
84 memset(&dhcp_gbl_ctx
, 0, sizeof (dhcp_gbl_ctx
));
88 /* get the current time for use as the random seed */
89 gettimeofday(&cur_tv
, (struct timezone
*)0);
90 isc_random_seed(cur_tv
.tv_sec
);
92 #if defined (NSUPDATE)
93 result
= dns_lib_init();
94 if (result
!= ISC_R_SUCCESS
)
98 result
= isc_mem_create(0, 0, &dhcp_gbl_ctx
.mctx
);
99 if (result
!= ISC_R_SUCCESS
)
102 result
= isc_appctx_create(dhcp_gbl_ctx
.mctx
, &dhcp_gbl_ctx
.actx
);
103 if (result
!= ISC_R_SUCCESS
)
106 result
= isc_app_ctxstart(dhcp_gbl_ctx
.actx
);
107 if (result
!= ISC_R_SUCCESS
)
109 dhcp_gbl_ctx
.actx_started
= ISC_TRUE
;
111 result
= isc_taskmgr_createinctx(dhcp_gbl_ctx
.mctx
,
114 &dhcp_gbl_ctx
.taskmgr
);
115 if (result
!= ISC_R_SUCCESS
)
118 result
= isc_socketmgr_createinctx(dhcp_gbl_ctx
.mctx
,
120 &dhcp_gbl_ctx
.socketmgr
);
121 if (result
!= ISC_R_SUCCESS
)
124 result
= isc_timermgr_createinctx(dhcp_gbl_ctx
.mctx
,
126 &dhcp_gbl_ctx
.timermgr
);
127 if (result
!= ISC_R_SUCCESS
)
130 result
= isc_task_create(dhcp_gbl_ctx
.taskmgr
, 0, &dhcp_gbl_ctx
.task
);
131 if (result
!= ISC_R_SUCCESS
)
134 #if defined (NSUPDATE)
135 result
= dns_client_createx(dhcp_gbl_ctx
.mctx
,
137 dhcp_gbl_ctx
.taskmgr
,
138 dhcp_gbl_ctx
.socketmgr
,
139 dhcp_gbl_ctx
.timermgr
,
141 &dhcp_gbl_ctx
.dnsclient
);
142 if (result
!= ISC_R_SUCCESS
)
145 /* The dst library is inited as part of dns_lib_init, we don't
146 * need it if NSUPDATE is enabled */
147 result
= dst_lib_init(dhcp_gbl_ctx
.mctx
, NULL
, 0);
148 if (result
!= ISC_R_SUCCESS
)
152 return(ISC_R_SUCCESS
);
156 * Currently we don't try and cleanup, just return an error
157 * expecting that our caller will log the error and exit.
164 * Convert a string name into the proper structure for the isc routines
166 * Previously we allowed names without a trailing '.' however the current
167 * dns and dst code requires the names to end in a period. If the
168 * name doesn't have a trailing period add one as part of creating
173 dhcp_isc_name(unsigned char *namestr
,
174 dns_fixedname_t
*namefix
,
181 namelen
= strlen((char *)namestr
);
182 isc_buffer_init(&b
, namestr
, namelen
);
183 isc_buffer_add(&b
, namelen
);
184 dns_fixedname_init(namefix
);
185 *name
= dns_fixedname_name(namefix
);
186 result
= dns_name_fromtext(*name
, &b
, dns_rootname
, 0, NULL
);
187 isc_buffer_invalidate(&b
);
192 isclib_make_dst_key(char *inname
,
194 unsigned char *secret
,
200 dns_fixedname_t name0
;
203 isc_buffer_init(&b
, secret
, length
);
204 isc_buffer_add(&b
, length
);
206 /* We only support HMAC_MD5 currently */
207 if (strcasecmp(algorithm
, DHCP_HMAC_MD5_NAME
) != 0) {
208 return(DHCP_R_INVALIDARG
);
211 result
= dhcp_isc_name((unsigned char *)inname
, &name0
, &name
);
212 if (result
!= ISC_R_SUCCESS
) {
216 return(dst_key_frombuffer(name
, DST_ALG_HMACMD5
, DNS_KEYOWNER_ENTITY
,
217 DNS_KEYPROTO_DNSSEC
, dns_rdataclass_in
,
218 &b
, dhcp_gbl_ctx
.mctx
, dstkey
));
222 * signal handler that initiates server shutdown
224 * @param signal signal code that we received
226 void dhcp_signal_handler(int signal
) {
227 isc_appctx_t
*ctx
= dhcp_gbl_ctx
.actx
;
228 if (ctx
&& ctx
->methods
&& ctx
->methods
->ctxshutdown
) {
230 * Let's not use standard log facilities here. They may not be
231 * signal safe, e.g. we could get the signal in the middle of
234 printf("Received signal %d, initiating shutdown.\n", signal
);
235 ctx
->methods
->ctxshutdown(ctx
);