1: /* $NetBSD: localconf.c,v 1.7 2008/12/23 14:04:42 tteras Exp $ */
2:
3: /* $KAME: localconf.c,v 1.33 2001/08/09 07:32:19 sakane Exp $ */
4:
5: /*
6: * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
7: * All rights reserved.
8: *
9: * Redistribution and use in source and binary forms, with or without
10: * modification, are permitted provided that the following conditions
11: * are met:
12: * 1. Redistributions of source code must retain the above copyright
13: * notice, this list of conditions and the following disclaimer.
14: * 2. Redistributions in binary form must reproduce the above copyright
15: * notice, this list of conditions and the following disclaimer in the
16: * documentation and/or other materials provided with the distribution.
17: * 3. Neither the name of the project nor the names of its contributors
18: * may be used to endorse or promote products derived from this software
19: * without specific prior written permission.
20: *
21: * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24: * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31: * SUCH DAMAGE.
32: */
33:
34: #include "config.h"
35:
36: #include <sys/types.h>
37: #include <sys/param.h>
38:
39: #include <stdlib.h>
40: #include <stdio.h>
41: #include <string.h>
42: #include <errno.h>
43: #include <ctype.h>
44: #include <err.h>
45:
46: #include "var.h"
47: #include "misc.h"
48: #include "vmbuf.h"
49: #include "plog.h"
50: #include "debug.h"
51:
52: #include "localconf.h"
53: #include "algorithm.h"
54: #include "admin.h"
55: #include "privsep.h"
56: #include "isakmp_var.h"
57: #include "isakmp.h"
58: #include "ipsec_doi.h"
59: #include "grabmyaddr.h"
60: #include "vendorid.h"
61: #include "str2val.h"
62: #include "safefile.h"
63: #include "admin.h"
64: #include "gcmalloc.h"
65:
66: struct localconf *lcconf;
67:
68: static void setdefault __P((void));
69:
70: void
71: initlcconf()
72: {
73: lcconf = racoon_calloc(1, sizeof(*lcconf));
74: if (lcconf == NULL)
75: errx(1, "failed to allocate local conf.");
76:
77: setdefault();
78:
79: lcconf->racoon_conf = LC_DEFAULT_CF;
80: }
81:
82: void
83: flushlcconf()
84: {
85: int i;
86:
87: setdefault();
88: myaddr_flush();
89:
90: for (i = 0; i < LC_PATHTYPE_MAX; i++) {
91: if (lcconf->pathinfo[i]) {
92: racoon_free(lcconf->pathinfo[i]);
93: lcconf->pathinfo[i] = NULL;
94: }
95: }
96: }
97:
98: static void
99: setdefault()
100: {
101: lcconf->uid = 0;
102: lcconf->gid = 0;
103: lcconf->chroot = NULL;
104: lcconf->port_isakmp = PORT_ISAKMP;
105: lcconf->port_isakmp_natt = PORT_ISAKMP_NATT;
106: lcconf->default_af = AF_INET;
107: lcconf->pad_random = LC_DEFAULT_PAD_RANDOM;
108: lcconf->pad_randomlen = LC_DEFAULT_PAD_RANDOMLEN;
109: lcconf->pad_maxsize = LC_DEFAULT_PAD_MAXSIZE;
110: lcconf->pad_strict = LC_DEFAULT_PAD_STRICT;
111: lcconf->pad_excltail = LC_DEFAULT_PAD_EXCLTAIL;
112: lcconf->retry_counter = LC_DEFAULT_RETRY_COUNTER;
113: lcconf->retry_interval = LC_DEFAULT_RETRY_INTERVAL;
114: lcconf->count_persend = LC_DEFAULT_COUNT_PERSEND;
115: lcconf->secret_size = LC_DEFAULT_SECRETSIZE;
116: lcconf->retry_checkph1 = LC_DEFAULT_RETRY_CHECKPH1;
117: lcconf->wait_ph2complete = LC_DEFAULT_WAIT_PH2COMPLETE;
118: lcconf->strict_address = FALSE;
119: lcconf->complex_bundle = TRUE; /*XXX FALSE;*/
120: lcconf->gss_id_enc = LC_GSSENC_UTF16LE; /* Windows compatibility */
121: lcconf->natt_ka_interval = LC_DEFAULT_NATT_KA_INTERVAL;
122: lcconf->pfkey_buffer_size = LC_DEFAULT_PFKEY_BUFFER_SIZE;
123: }
124:
125: /*
126: * get PSK by string.
127: */
128: vchar_t *
129: getpskbyname(id0)
130: vchar_t *id0;
131: {
132: char *id;
133: vchar_t *key = NULL;
134:
135: id = racoon_calloc(1, 1 + id0->l - sizeof(struct ipsecdoi_id_b));
136: if (id == NULL) {
137: plog(LLV_ERROR, LOCATION, NULL,
138: "failed to get psk buffer.\n");
139: goto end;
140: }
141: memcpy(id, id0->v + sizeof(struct ipsecdoi_id_b),
142: id0->l - sizeof(struct ipsecdoi_id_b));
143: id[id0->l - sizeof(struct ipsecdoi_id_b)] = '\0';
144:
145: key = privsep_getpsk(id, id0->l - sizeof(struct ipsecdoi_id_b));
146:
147: end:
148: if (id)
149: racoon_free(id);
150: return key;
151: }
152:
153: /*
154: * get PSK by address.
155: */
156: vchar_t *
157: getpskbyaddr(remote)
158: struct sockaddr *remote;
159: {
160: vchar_t *key = NULL;
161: char addr[NI_MAXHOST], port[NI_MAXSERV];
162:
163: GETNAMEINFO(remote, addr, port);
164:
165: key = privsep_getpsk(addr, strlen(addr));
166:
167: return key;
168: }
169:
170: vchar_t *
171: getpsk(str, len)
172: const char *str;
173: const int len;
174: {
175: FILE *fp;
176: char buf[1024]; /* XXX how is variable length ? */
177: vchar_t *key = NULL;
178: char *p, *q;
179: size_t keylen;
180: char *k = NULL;
181:
182: if (safefile(lcconf->pathinfo[LC_PATHTYPE_PSK], 1) == 0)
183: fp = fopen(lcconf->pathinfo[LC_PATHTYPE_PSK], "r");
184: else
185: fp = NULL;
186: if (fp == NULL) {
187: plog(LLV_ERROR, LOCATION, NULL,
188: "failed to open pre_share_key file %s\n",
189: lcconf->pathinfo[LC_PATHTYPE_PSK]);
190: return NULL;
191: }
192:
193: while (fgets(buf, sizeof(buf), fp) != NULL) {
194: /* comment line */
195: if (buf[0] == '#')
196: continue;
197:
198: /* search the end of 1st string. */
199: for (p = buf; *p != '\0' && !isspace((int)*p); p++)
200: ;
201: if (*p == '\0')
202: continue; /* no 2nd parameter */
203: *p = '\0';
204: /* search the 1st of 2nd string. */
205: while (isspace((int)*++p))
206: ;
207: if (*p == '\0')
208: continue; /* no 2nd parameter */
209: p--;
210: if (strncmp(buf, str, len) == 0 && buf[len] == '\0') {
211: p++;
212: keylen = 0;
213: for (q = p; *q != '\0' && *q != '\n'; q++)
214: keylen++;
215: *q = '\0';
216:
217: /* fix key if hex string */
218: if (strncmp(p, "0x", 2) == 0) {
219: k = str2val(p + 2, 16, &keylen);
220: if (k == NULL) {
221: plog(LLV_ERROR, LOCATION, NULL,
222: "failed to get psk buffer.\n");
223: goto end;
224: }
225: p = k;
226: }
227:
228: key = vmalloc(keylen);
229: if (key == NULL) {
230: plog(LLV_ERROR, LOCATION, NULL,
231: "failed to allocate key buffer.\n");
232: goto end;
233: }
234: memcpy(key->v, p, key->l);
235: if (k)
236: racoon_free(k);
237: goto end;
238: }
239: }
240:
241: end:
242: fclose(fp);
243: return key;
244: }
245:
246: /*
247: * get a file name of a type specified.
248: */
249: void
250: getpathname(path, len, type, name)
251: char *path;
252: int len, type;
253: const char *name;
254: {
255: snprintf(path, len, "%s%s%s",
256: name[0] == '/' ? "" : lcconf->pathinfo[type],
257: name[0] == '/' ? "" : "/",
258: name);
259:
260: plog(LLV_DEBUG, LOCATION, NULL, "filename: %s\n", path);
261: }
262:
263: #if 0 /* DELETEIT */
264: static int lc_doi2idtype[] = {
265: -1,
266: -1,
267: LC_IDENTTYPE_FQDN,
268: LC_IDENTTYPE_USERFQDN,
269: -1,
270: -1,
271: -1,
272: -1,
273: -1,
274: LC_IDENTTYPE_CERTNAME,
275: -1,
276: LC_IDENTTYPE_KEYID,
277: };
278:
279: /*
280: * convert DOI value to idtype
281: * OUT -1 : NG
282: * other: converted.
283: */
284: int
285: doi2idtype(idtype)
286: int idtype;
287: {
288: if (ARRAYLEN(lc_doi2idtype) > idtype)
289: return lc_doi2idtype[idtype];
290: return -1;
291: }
292: #endif
293:
294: static int lc_sittype2doi[] = {
295: IPSECDOI_SIT_IDENTITY_ONLY,
296: IPSECDOI_SIT_SECRECY,
297: IPSECDOI_SIT_INTEGRITY,
298: };
299:
300: /*
301: * convert sittype to DOI value.
302: * OUT -1 : NG
303: * other: converted.
304: */
305: int
306: sittype2doi(sittype)
307: int sittype;
308: {
309: if (ARRAYLEN(lc_sittype2doi) > sittype)
310: return lc_sittype2doi[sittype];
311: return -1;
312: }
313:
314: static int lc_doitype2doi[] = {
315: IPSEC_DOI,
316: };
317:
318: /*
319: * convert doitype to DOI value.
320: * OUT -1 : NG
321: * other: converted.
322: */
323: int
324: doitype2doi(doitype)
325: int doitype;
326: {
327: if (ARRAYLEN(lc_doitype2doi) > doitype)
328: return lc_doitype2doi[doitype];
329: return -1;
330: }
331:
332:
333:
334: static void
335: saverestore_params(f)
336: int f;
337: {
338: static u_int16_t s_port_isakmp;
339:
340: /* 0: save, 1: restore */
341: if (f) {
342: lcconf->port_isakmp = s_port_isakmp;
343: } else {
344: s_port_isakmp = lcconf->port_isakmp;
345: }
346: }
347:
348: void
349: restore_params()
350: {
351: saverestore_params(1);
352: }
353:
354: void
355: save_params()
356: {
357: saverestore_params(0);
358: }
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