starter: No special handling for left|rightsubnet, just pass it on as string.
[strongswan.git] / src / starter / starterstroke.c
1 /*
2 * Copyright (C) 2006 Martin Willi
3 * Hochschule fuer Technik Rapperswil
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * for more details.
14 */
15
16 #include <sys/types.h>
17 #include <sys/socket.h>
18 #include <sys/un.h>
19 #include <stddef.h>
20 #include <unistd.h>
21 #include <stdlib.h>
22 #include <string.h>
23 #include <errno.h>
24 #include <netinet/in.h>
25 #include <arpa/inet.h>
26
27 #include <credentials/auth_cfg.h>
28
29 #include <library.h>
30 #include <debug.h>
31
32 #include <constants.h>
33 #include <defs.h>
34
35 #include <stroke_msg.h>
36
37 #include "starterstroke.h"
38 #include "confread.h"
39 #include "files.h"
40
41 #define IPV4_LEN 4
42 #define IPV6_LEN 16
43
44 static char* push_string(stroke_msg_t *msg, char *string)
45 {
46 unsigned long string_start = msg->length;
47
48 if (string == NULL || msg->length + strlen(string) >= sizeof(stroke_msg_t))
49 {
50 return NULL;
51 }
52 else
53 {
54 msg->length += strlen(string) + 1;
55 strcpy((char*)msg + string_start, string);
56 return (char*)string_start;
57 }
58 }
59
60 static int send_stroke_msg (stroke_msg_t *msg)
61 {
62 struct sockaddr_un ctl_addr;
63 int byte_count;
64 char buffer[64];
65
66 ctl_addr.sun_family = AF_UNIX;
67 strcpy(ctl_addr.sun_path, CHARON_CTL_FILE);
68
69 /* starter is not called from commandline, and therefore absolutely silent */
70 msg->output_verbosity = -1;
71
72 int sock = socket(AF_UNIX, SOCK_STREAM, 0);
73
74 if (sock < 0)
75 {
76 DBG1(DBG_APP, "socket() failed: %s", strerror(errno));
77 return -1;
78 }
79 if (connect(sock, (struct sockaddr *)&ctl_addr, offsetof(struct sockaddr_un, sun_path) + strlen(ctl_addr.sun_path)) < 0)
80 {
81 DBG1(DBG_APP, "connect(charon_ctl) failed: %s", strerror(errno));
82 close(sock);
83 return -1;
84 }
85
86 /* send message */
87 if (write(sock, msg, msg->length) != msg->length)
88 {
89 DBG1(DBG_APP, "write(charon_ctl) failed: %s", strerror(errno));
90 close(sock);
91 return -1;
92 }
93 while ((byte_count = read(sock, buffer, sizeof(buffer)-1)) > 0)
94 {
95 buffer[byte_count] = '\0';
96 DBG1(DBG_APP, "%s", buffer);
97 }
98 if (byte_count < 0)
99 {
100 DBG1(DBG_APP, "read() failed: %s", strerror(errno));
101 }
102
103 close(sock);
104 return 0;
105 }
106
107 static char* connection_name(starter_conn_t *conn)
108 {
109 /* if connection name is '%auto', create a new name like conn_xxxxx */
110 static char buf[32];
111
112 if (streq(conn->name, "%auto"))
113 {
114 sprintf(buf, "conn_%lu", conn->id);
115 return buf;
116 }
117 return conn->name;
118 }
119
120 static void starter_stroke_add_end(stroke_msg_t *msg, stroke_end_t *msg_end, starter_end_t *conn_end)
121 {
122 msg_end->auth = push_string(msg, conn_end->auth);
123 msg_end->auth2 = push_string(msg, conn_end->auth2);
124 msg_end->id = push_string(msg, conn_end->id);
125 msg_end->id2 = push_string(msg, conn_end->id2);
126 msg_end->rsakey = push_string(msg, conn_end->rsakey);
127 msg_end->cert = push_string(msg, conn_end->cert);
128 msg_end->cert2 = push_string(msg, conn_end->cert2);
129 msg_end->cert_policy = push_string(msg, conn_end->cert_policy);
130 msg_end->ca = push_string(msg, conn_end->ca);
131 msg_end->ca2 = push_string(msg, conn_end->ca2);
132 msg_end->groups = push_string(msg, conn_end->groups);
133 msg_end->updown = push_string(msg, conn_end->updown);
134 if (conn_end->host)
135 {
136 msg_end->address = push_string(msg, conn_end->host);
137 }
138 else
139 {
140 msg_end->address = push_string(msg, "%any");
141 }
142 msg_end->ikeport = conn_end->ikeport;
143 msg_end->subnets = push_string(msg, conn_end->subnet);
144 msg_end->sourceip = push_string(msg, conn_end->sourceip);
145 msg_end->sourceip_mask = conn_end->sourceip_mask;
146 msg_end->sendcert = conn_end->sendcert;
147 msg_end->hostaccess = conn_end->hostaccess;
148 msg_end->tohost = !conn_end->subnet;
149 msg_end->allow_any = conn_end->allow_any;
150 msg_end->protocol = conn_end->protocol;
151 msg_end->port = conn_end->port;
152 }
153
154 int starter_stroke_add_conn(starter_config_t *cfg, starter_conn_t *conn)
155 {
156 stroke_msg_t msg;
157
158 memset(&msg, 0, sizeof(msg));
159 msg.type = STR_ADD_CONN;
160 msg.length = offsetof(stroke_msg_t, buffer);
161 msg.add_conn.version = conn->keyexchange;
162 msg.add_conn.name = push_string(&msg, connection_name(conn));
163 msg.add_conn.eap_identity = push_string(&msg, conn->eap_identity);
164 msg.add_conn.aaa_identity = push_string(&msg, conn->aaa_identity);
165 msg.add_conn.xauth_identity = push_string(&msg, conn->xauth_identity);
166
167 msg.add_conn.mode = conn->mode;
168 msg.add_conn.proxy_mode = conn->proxy_mode;
169
170 if (!(conn->policy & POLICY_DONT_REKEY))
171 {
172 msg.add_conn.rekey.reauth = (conn->policy & POLICY_DONT_REAUTH) == LEMPTY;
173 msg.add_conn.rekey.ipsec_lifetime = conn->sa_ipsec_life_seconds;
174 msg.add_conn.rekey.ike_lifetime = conn->sa_ike_life_seconds;
175 msg.add_conn.rekey.margin = conn->sa_rekey_margin;
176 msg.add_conn.rekey.life_bytes = conn->sa_ipsec_life_bytes;
177 msg.add_conn.rekey.margin_bytes = conn->sa_ipsec_margin_bytes;
178 msg.add_conn.rekey.life_packets = conn->sa_ipsec_life_packets;
179 msg.add_conn.rekey.margin_packets = conn->sa_ipsec_margin_packets;
180 msg.add_conn.rekey.tries = conn->sa_keying_tries;
181 msg.add_conn.rekey.fuzz = conn->sa_rekey_fuzz;
182 }
183 msg.add_conn.mobike = (conn->policy & POLICY_MOBIKE) != 0;
184 msg.add_conn.force_encap = (conn->policy & POLICY_FORCE_ENCAP) != 0;
185 msg.add_conn.ipcomp = (conn->policy & POLICY_COMPRESS) != 0;
186 msg.add_conn.install_policy = conn->install_policy;
187 msg.add_conn.aggressive = conn->aggressive;
188 msg.add_conn.crl_policy = (crl_policy_t)cfg->setup.strictcrlpolicy;
189 msg.add_conn.unique = cfg->setup.uniqueids;
190 msg.add_conn.algorithms.ike = push_string(&msg, conn->ike);
191 msg.add_conn.algorithms.esp = push_string(&msg, conn->esp);
192 msg.add_conn.dpd.delay = conn->dpd_delay;
193 msg.add_conn.dpd.timeout = conn->dpd_timeout;
194 msg.add_conn.dpd.action = conn->dpd_action;
195 msg.add_conn.close_action = conn->close_action;
196 msg.add_conn.inactivity = conn->inactivity;
197 msg.add_conn.ikeme.mediation = conn->me_mediation;
198 msg.add_conn.ikeme.mediated_by = push_string(&msg, conn->me_mediated_by);
199 msg.add_conn.ikeme.peerid = push_string(&msg, conn->me_peerid);
200 msg.add_conn.reqid = conn->reqid;
201 msg.add_conn.mark_in.value = conn->mark_in.value;
202 msg.add_conn.mark_in.mask = conn->mark_in.mask;
203 msg.add_conn.mark_out.value = conn->mark_out.value;
204 msg.add_conn.mark_out.mask = conn->mark_out.mask;
205 msg.add_conn.tfc = conn->tfc;
206
207 starter_stroke_add_end(&msg, &msg.add_conn.me, &conn->left);
208 starter_stroke_add_end(&msg, &msg.add_conn.other, &conn->right);
209
210 if (!msg.add_conn.me.auth && !msg.add_conn.other.auth &&
211 conn->authby)
212 { /* leftauth/rightauth not set, use legacy options */
213 if (streq(conn->authby, "rsa") || streq(conn->authby, "rsasig") ||
214 streq(conn->authby, "ecdsa") || streq(conn->authby, "ecdsasig") ||
215 streq(conn->authby, "pubkey"))
216 {
217 msg.add_conn.me.auth = push_string(&msg, "pubkey");
218 msg.add_conn.other.auth = push_string(&msg, "pubkey");
219 }
220 else if (streq(conn->authby, "secret") || streq(conn->authby, "psk"))
221 {
222 msg.add_conn.me.auth = push_string(&msg, "psk");
223 msg.add_conn.other.auth = push_string(&msg, "psk");
224 }
225 else if (streq(conn->authby, "xauthrsasig"))
226 {
227 msg.add_conn.me.auth = push_string(&msg, "pubkey");
228 msg.add_conn.other.auth = push_string(&msg, "pubkey");
229 if (conn->policy & POLICY_XAUTH_SERVER)
230 {
231 msg.add_conn.other.auth2 = push_string(&msg, "xauth");
232 }
233 else
234 {
235 msg.add_conn.me.auth2 = push_string(&msg, "xauth");
236 }
237 }
238 else if (streq(conn->authby, "xauthpsk"))
239 {
240 msg.add_conn.me.auth = push_string(&msg, "psk");
241 msg.add_conn.other.auth = push_string(&msg, "psk");
242 if (conn->policy & POLICY_XAUTH_SERVER)
243 {
244 msg.add_conn.other.auth2 = push_string(&msg, "xauth");
245 }
246 else
247 {
248 msg.add_conn.me.auth2 = push_string(&msg, "xauth");
249 }
250 }
251 }
252 return send_stroke_msg(&msg);
253 }
254
255 int starter_stroke_del_conn(starter_conn_t *conn)
256 {
257 stroke_msg_t msg;
258
259 msg.type = STR_DEL_CONN;
260 msg.length = offsetof(stroke_msg_t, buffer);
261 msg.del_conn.name = push_string(&msg, connection_name(conn));
262 return send_stroke_msg(&msg);
263 }
264
265 int starter_stroke_route_conn(starter_conn_t *conn)
266 {
267 stroke_msg_t msg;
268
269 msg.type = STR_ROUTE;
270 msg.length = offsetof(stroke_msg_t, buffer);
271 msg.route.name = push_string(&msg, connection_name(conn));
272 return send_stroke_msg(&msg);
273 }
274
275 int starter_stroke_initiate_conn(starter_conn_t *conn)
276 {
277 stroke_msg_t msg;
278
279 msg.type = STR_INITIATE;
280 msg.length = offsetof(stroke_msg_t, buffer);
281 msg.initiate.name = push_string(&msg, connection_name(conn));
282 return send_stroke_msg(&msg);
283 }
284
285 int starter_stroke_add_ca(starter_ca_t *ca)
286 {
287 stroke_msg_t msg;
288
289 msg.type = STR_ADD_CA;
290 msg.length = offsetof(stroke_msg_t, buffer);
291 msg.add_ca.name = push_string(&msg, ca->name);
292 msg.add_ca.cacert = push_string(&msg, ca->cacert);
293 msg.add_ca.crluri = push_string(&msg, ca->crluri);
294 msg.add_ca.crluri2 = push_string(&msg, ca->crluri2);
295 msg.add_ca.ocspuri = push_string(&msg, ca->ocspuri);
296 msg.add_ca.ocspuri2 = push_string(&msg, ca->ocspuri2);
297 msg.add_ca.certuribase = push_string(&msg, ca->certuribase);
298 return send_stroke_msg(&msg);
299 }
300
301 int starter_stroke_del_ca(starter_ca_t *ca)
302 {
303 stroke_msg_t msg;
304
305 msg.type = STR_DEL_CA;
306 msg.length = offsetof(stroke_msg_t, buffer);
307 msg.del_ca.name = push_string(&msg, ca->name);
308 return send_stroke_msg(&msg);
309 }
310
311 int starter_stroke_configure(starter_config_t *cfg)
312 {
313 stroke_msg_t msg;
314
315 if (cfg->setup.cachecrls)
316 {
317 msg.type = STR_CONFIG;
318 msg.length = offsetof(stroke_msg_t, buffer);
319 msg.config.cachecrl = 1;
320 return send_stroke_msg(&msg);
321 }
322 return 0;
323 }
324