ISC DHCP  4.4.2b1
A reference DHCPv4 and DHCPv6 implementation
isclib.h
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1 /* isclib.h
2 
3  connections to the isc and dns libraries */
4 
5 /*
6  * Copyright (c) 2009-2019 by Internet Systems Consortium, Inc. ("ISC")
7  *
8  * This Source Code Form is subject to the terms of the Mozilla Public
9  * License, v. 2.0. If a copy of the MPL was not distributed with this
10  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
11  *
12  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
13  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
15  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
18  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19  *
20  * Internet Systems Consortium, Inc.
21  * 950 Charter Street
22  * Redwood City, CA 94063
23  * <info@isc.org>
24  * http://www.isc.org/
25  *
26  */
27 
28 #ifndef ISCLIB_H
29 #define ISCLIB_H
30 
31 #include "config.h"
32 
33 #include <syslog.h>
34 
35 #define MAXWIRE 256
36 
37 #include <sys/types.h>
38 #include <sys/socket.h>
39 
40 #include <netinet/in.h>
41 
42 #include <arpa/inet.h>
43 
44 #include <unistd.h>
45 #include <ctype.h>
46 #include <stdio.h>
47 #include <stdlib.h>
48 #include <string.h>
49 #include <netdb.h>
50 
51 #include <isc/boolean.h>
52 #include <isc/int.h>
53 
54 #include <isc/buffer.h>
55 #include <isc/lex.h>
56 #include <isc/lib.h>
57 #include <isc/app.h>
58 #include <isc/mem.h>
59 #include <isc/parseint.h>
60 #include <isc/socket.h>
61 #include <isc/sockaddr.h>
62 #include <isc/task.h>
63 #include <isc/timer.h>
64 #include <isc/heap.h>
65 #include <isc/random.h>
66 
67 #include <irs/resconf.h>
68 
69 #include <dns/client.h>
70 #include <dns/fixedname.h>
71 #include <dns/keyvalues.h>
72 #include <dns/lib.h>
73 #include <dns/name.h>
74 #include <dns/rdata.h>
75 #include <dns/rdataclass.h>
76 #include <dns/rdatalist.h>
77 #include <dns/rdataset.h>
78 #include <dns/rdatastruct.h>
79 #include <dns/rdatatype.h>
80 #include <dns/result.h>
81 #include <dns/secalg.h>
82 #include <dns/tsec.h>
83 
84 #include <dst/dst.h>
85 
86 #include "result.h"
87 
88 
89 /*
90  * DHCP context structure
91  * This holds the libisc information for a dhcp entity
92  */
93 
94 typedef struct dhcp_context {
95  isc_mem_t *mctx;
96  isc_appctx_t *actx;
97  int actx_started; // ISC_TRUE if ctxstart has been called
98  int actx_running; // ISC_TRUE if ctxrun has been called
99  isc_taskmgr_t *taskmgr;
100  isc_task_t *task;
101  isc_socketmgr_t *socketmgr;
102  isc_timermgr_t *timermgr;
103 #if defined (NSUPDATE)
104  dns_client_t *dnsclient;
105  int use_local4;
106  isc_sockaddr_t local4_sockaddr;
107  int use_local6;
108  isc_sockaddr_t local6_sockaddr;
109 #endif
111 
113 
114 #define DHCP_MAXDNS_WIRE 256
115 #define DHCP_MAXNS 3
116 #define DHCP_HMAC_MD5_NAME "HMAC-MD5.SIG-ALG.REG.INT."
117 #define DHCP_HMAC_SHA1_NAME "HMAC-SHA1.SIG-ALG.REG.INT."
118 #define DHCP_HMAC_SHA224_NAME "HMAC-SHA224.SIG-ALG.REG.INT."
119 #define DHCP_HMAC_SHA256_NAME "HMAC-SHA256.SIG-ALG.REG.INT."
120 #define DHCP_HMAC_SHA384_NAME "HMAC-SHA384.SIG-ALG.REG.INT."
121 #define DHCP_HMAC_SHA512_NAME "HMAC-SHA512.SIG-ALG.REG.INT."
122 
123 isc_result_t dhcp_isc_name(unsigned char *namestr,
124  dns_fixedname_t *namefix,
125  dns_name_t **name);
126 
127 isc_result_t
128 isclib_make_dst_key(char *inname,
129  char *algorithm,
130  unsigned char *secret,
131  int length,
132  dst_key_t **dstkey);
133 
134 #define DHCP_CONTEXT_PRE_DB 1
135 #define DHCP_CONTEXT_POST_DB 2
136 #define DHCP_DNS_CLIENT_LAZY_INIT 4
137 isc_result_t dhcp_context_create(int flags,
138  struct in_addr *local4,
139  struct in6_addr *local6);
140 void isclib_cleanup(void);
141 
142 void dhcp_signal_handler(int signal);
143 extern int shutdown_signal;
144 
145 #if defined (NSUPDATE)
146 isc_result_t dns_client_init();
147 #endif /* defined NSUPDATE */
148 
149 
150 #endif /* ISCLIB_H */
dhcp_context_t
struct dhcp_context dhcp_context_t
dhcp_signal_handler
void dhcp_signal_handler(int signal)
Definition: isclib.c:378
dhcp_context::mctx
isc_mem_t * mctx
Definition: isclib.h:95
dhcp_context_create
isc_result_t dhcp_context_create(int flags, struct in_addr *local4, struct in6_addr *local6)
Definition: isclib.c:167
isclib_make_dst_key
isc_result_t isclib_make_dst_key(char *inname, char *algorithm, unsigned char *secret, int length, dst_key_t **dstkey)
Definition: isclib.c:332
dhcp_isc_name
isc_result_t dhcp_isc_name(unsigned char *namestr, dns_fixedname_t *namefix, dns_name_t **name)
Definition: isclib.c:313
dhcp_context::task
isc_task_t * task
Definition: isclib.h:100
isclib_cleanup
void isclib_cleanup(void)
Definition: isclib.c:88
dhcp_gbl_ctx
dhcp_context_t dhcp_gbl_ctx
Definition: isclib.c:33
shutdown_signal
int shutdown_signal
Definition: isclib.c:34
dhcp_context::taskmgr
isc_taskmgr_t * taskmgr
Definition: isclib.h:99
dhcp_context::timermgr
isc_timermgr_t * timermgr
Definition: isclib.h:102
result.h
dhcp_context::actx
isc_appctx_t * actx
Definition: isclib.h:96
dhcp_context::actx_running
int actx_running
Definition: isclib.h:98
dhcp_context::socketmgr
isc_socketmgr_t * socketmgr
Definition: isclib.h:101
dhcp_context
Definition: isclib.h:94
config.h
dhcp_context::actx_started
int actx_started
Definition: isclib.h:97