gvpe/src/conf.C

/*
    conf.c -- configuration code
    Copyright (C) 1998 Robert van der Meulen
                  1998-2002 Ivo Timmermans <ivo@o2w.nl>
                  2000-2002 Guus Sliepen <guus@sliepen.eu.org>
                  2000 Cris van Pelt <tribbel@arise.dhs.org>
                  2003 Marc Lehmann <pcg@goof.com>
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#include "config.h"

#include <cstdio>
#include <cstdlib>
#include <cstring>

#include <errno.h>
#include <netdb.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

#include <netinet/in.h>

#include <openssl/err.h>
#include <openssl/pem.h>
#include <openssl/rsa.h>
#include <openssl/rand.h>

#include "gettext.h"

#include "conf.h"
#include "slog.h"
#include "util.h"

char *confbase;
char *thisnode;
char *identname;
char *pidfilename;

struct configuration conf;

configuration::configuration ()
{
  init ();
}

configuration::~configuration ()
{
  cleanup ();
}

void configuration::init ()
{
  memset (this, 0, sizeof (*this));

  rekey     = DEFAULT_REKEY;
  keepalive = DEFAULT_KEEPALIVE;
  llevel    = L_INFO;
  ip_proto  = IPPROTO_GRE;

  default_node.udp_port    = DEFAULT_UDPPORT;
  default_node.connectmode = conf_node::C_ALWAYS;
  default_node.compress    = true;
  default_node.can_send    = PROT_UDPv4;
  default_node.can_recv    = PROT_IPv4;
}

void configuration::cleanup()
{
  if (rsa_key)
    RSA_free (rsa_key);

  free (ifname);

  rsa_key = 0;
  ifname = 0;
}

void
configuration::clear_config ()
{
  for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
    delete *i;

  nodes.clear ();

  cleanup ();
  init ();
}

#define parse_bool(target,name,trueval,falseval)                \
  if (!strcmp (val, "yes"))             target = trueval;       \
  else if (!strcmp (val, "no"))         target = falseval;      \
  else if (!strcmp (val, "true"))       target = trueval;       \
  else if (!strcmp (val, "false"))      target = falseval;      \
  else if (!strcmp (val, "on"))         target = trueval;       \
  else if (!strcmp (val, "off"))        target = falseval;      \
  else                                                          \
    slog (L_WARN,                                               \
            _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \
            name, var, fname, lineno);

void configuration::read_config (bool need_keys)
{
  char *fname;
  FILE *f;

  clear_config ();

  asprintf (&fname, "%s/vped.conf", confbase);
  f = fopen (fname, "r");

  if (f)
    {
      char line[16384];
      int lineno = 0;
      char *var, *val;
      conf_node *node = &default_node;

      while (fgets (line, sizeof (line), f))
        {
          lineno++;

          {
            char *end = line + strlen (line);

            while (*end < ' ' && end >= line)
              end--;

            *++end = 0;
          }

          char *tok = line;

retry:
          var = strtok (tok, "\t =");
          tok = 0;

          if (!var || !var[0])
            continue;           /* no tokens on this line */

          if (var[0] == '#')
            continue;           /* comment: ignore */

          val = strtok (NULL, "\t\n\r =");

          if (!val || val[0] == '#')
            {
              slog (L_WARN,
                      _("no value for variable `%s', at '%s' line %d"),
                      var, fname, lineno);
              break;
            }

          if (!strcmp (var, "on"))
            {
              if (!::thisnode
                  || (val[0] == '!' && strcmp (val + 1, ::thisnode))
                  || !strcmp (val, ::thisnode))
                goto retry;

              continue;
            }

          // truly global
          if (!strcmp (var, "loglevel"))
            {
              loglevel l = string_to_loglevel (val);

              if (l != L_NONE)
                llevel = l;
              else
                slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
            }
          else if (!strcmp (var, "ip-proto"))
            ip_proto = atoi (val);

          // per config
          else if (!strcmp (var, "node"))
            {
              default_node.id++;

              node = new conf_node (default_node);

              nodes.push_back (node);

              node->nodename = strdup (val);

              {
                char *fname;
                FILE *f;

                asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);

                f = fopen (fname, "r");
                if (f)
                  {
                    node->rsa_key = RSA_new ();

                    if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
                      {
                        ERR_load_RSA_strings (); ERR_load_PEM_strings ();
                        slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
                        exit (1);
                      }

                    RSA_blinding_on (node->rsa_key, 0);

                    fclose (f);
                  }
                else
                  {
                    slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));

                    if (need_keys)
                      exit (1);
                  }

                free (fname);
              }

              if (!::thisnode || !strcmp (node->nodename, ::thisnode))
                thisnode = node;
            }
          else if (!strcmp (var, "private-key"))
            prikeyfile = strdup (val);
          else if (!strcmp (var, "ifpersist"))
            {
              parse_bool (ifpersist, "ifpersist", true, false);
            }
          else if (!strcmp (var, "ifname"))
            ifname = strdup (val);
          else if (!strcmp (var, "rekey"))
            rekey = atoi (val);
          else if (!strcmp (var, "keepalive"))
            keepalive = atoi (val);
          else if (!strcmp (var, "mtu"))
            mtu = atoi (val);
          else if (!strcmp (var, "if-up"))
            script_if_up = strdup (val);
          else if (!strcmp (var, "node-up"))
            script_node_up = strdup (val);
          else if (!strcmp (var, "node-down"))
            script_node_down = strdup (val);

          /* node-specific, non-defaultable */
          else if (node != &default_node && !strcmp (var, "hostname"))
            {
              free (node->hostname);
              node->hostname = strdup (val);
            }

          /* node-specific, defaultable */
          else if (!strcmp (var, "udp-port"))
            node->udp_port = atoi (val);
          else if (!strcmp (var, "router-priority"))
            node->routerprio = atoi (val);
          else if (!strcmp (var, "connect"))
            {
              if (!strcmp (val, "ondemand"))
                node->connectmode = conf_node::C_ONDEMAND;
              else if (!strcmp (val, "never"))
                node->connectmode = conf_node::C_NEVER;
              else if (!strcmp (val, "always"))
                node->connectmode = conf_node::C_ALWAYS;
              else if (!strcmp (val, "disabled"))
                node->connectmode = conf_node::C_DISABLED;
              else
                slog (L_WARN,
                        _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
                        var, fname, lineno);
            }
          else if (!strcmp (var, "inherit-tos"))
            {
              parse_bool (node->inherit_tos, "inherit-tos", true, false);
            }
          else if (!strcmp (var, "compress"))
            {
              parse_bool (node->compress, "compress", true, false);
            }
          // all these bool options really really cost a lot of executable size!
          else if (!strcmp (var, "can-send-udp"))
            {
              u8 v; parse_bool (v, "can-send-udp", PROT_UDPv4, 0); node->can_send = (node->can_send & ~PROT_UDPv4) | v;
            }
          else if (!strcmp (var, "can-recv-udp"))
            {
              u8 v; parse_bool (v, "can-recv-udp", PROT_UDPv4, 0); node->can_recv = (node->can_recv & ~PROT_UDPv4) | v;
            }
          else if (!strcmp (var, "can-send-rawip"))
            {
              u8 v; parse_bool (v, "can-send-rawip", PROT_IPv4, 0); node->can_send = (node->can_send & ~PROT_IPv4) | v;
            }
          else if (!strcmp (var, "can-recv-rawip"))
            {
              u8 v; parse_bool (v, "can-recv-rawip", PROT_IPv4, 0); node->can_recv = (node->can_recv & ~PROT_IPv4) | v;
            }

          // unknown or misplaced
          else
            {
              slog (L_WARN,
                      _("unknown or misplaced variable `%s', at '%s' line %d"),
                      var, fname, lineno);
            }
        }

      fclose (f);
    }
  else
    {
      slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
      exit (1);
    }

  free (fname);

  fname = config_filename (prikeyfile, "hostkey");

  f = fopen (fname, "r");
  if (f)
    {
      rsa_key = RSA_new ();

      if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
        {
          ERR_load_RSA_strings (); ERR_load_PEM_strings ();
          slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
          exit (1);
        }

      RSA_blinding_on (rsa_key, 0);

      fclose (f);
    }
  else
    {
      slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));

      if (need_keys)
        exit (1);
    }

  free (fname);
}

char *configuration::config_filename (const char *name, const char *dflt)
{
  char *fname;

  asprintf (&fname, name ? name : dflt, ::thisnode);

  if (!ABSOLUTE_PATH (fname))
    {
      char *rname = fname;
      asprintf (&fname, "%s/%s", confbase, rname);
      free (rname);
    }

  return fname;
}

void
configuration::print ()
{
  printf (_("\nConfiguration\n\n"));
  printf (_("# of nodes:         %d\n"), nodes.size ());
  printf (_("this node:          %s\n"), thisnode ? thisnode->nodename : "<unset>");
  printf (_("MTU:                %d\n"), mtu);
  printf (_("rekeying interval:  %d\n"), rekey);
  printf (_("keepalive interval: %d\n"), keepalive);
  printf (_("interface:          %s\n"), ifname);
  printf (_("primary rsa key:    %s\n"), prikeyfile ? prikeyfile : "<default>");
  printf (_("rsa key size:       %d\n"), rsa_key ? RSA_size (rsa_key) : -1);
  printf ("\n");

  printf ("%4s  %-17s %s %-8.8s  %-10.10s  %s\n",
          _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));

  for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
    (*i)->print ();

  printf ("\n");
}

void
conf_node::print ()
{
  printf ("%4d  fe:fd:80:00:0%1x:%02x  %c  %-8.8s  %-10.10s  %s%s%d\n",
          id,
          id >> 8, id & 0xff,
          compress ? 'Y' : 'N',
          connectmode   == C_ONDEMAND ? "ondemand" :
            connectmode == C_NEVER    ? "never" :
            connectmode == C_ALWAYS   ? "always" : "",
          nodename,
          hostname ? hostname : "",
          hostname ? ":" : "",
          hostname ? udp_port : 0
          );
}

Revision:	1.5
Committed:	Fri Mar 28 04:05:10 2003 UTC (21 years, 2 months ago) by pcg
Content type:	text/plain
Branch:	MAIN
Changes since 1.4:	+42 -30 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	pcg	1.1	/*
2			conf.c -- configuration code
3			Copyright (C) 1998 Robert van der Meulen
4			1998-2002 Ivo Timmermans <ivo@o2w.nl>
5			2000-2002 Guus Sliepen <guus@sliepen.eu.org>
6			2000 Cris van Pelt <tribbel@arise.dhs.org>
7			2003 Marc Lehmann <pcg@goof.com>
8
9			This program is free software; you can redistribute it and/or modify
10			it under the terms of the GNU General Public License as published by
11			the Free Software Foundation; either version 2 of the License, or
12			(at your option) any later version.
13
14			This program is distributed in the hope that it will be useful,
15			but WITHOUT ANY WARRANTY; without even the implied warranty of
16			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17			GNU General Public License for more details.
18
19			You should have received a copy of the GNU General Public License
20			along with this program; if not, write to the Free Software
21			Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22			*/
23
24			#include "config.h"
25
26			#include <cstdio>
27			#include <cstdlib>
28			#include <cstring>
29
30			#include <errno.h>
31			#include <netdb.h>
32			#include <sys/stat.h>
33			#include <sys/types.h>
34			#include <unistd.h>
35
36	pcg	1.5	#include <netinet/in.h>
37
38	pcg	1.1	#include <openssl/err.h>
39			#include <openssl/pem.h>
40			#include <openssl/rsa.h>
41			#include <openssl/rand.h>
42
43			#include "gettext.h"
44
45			#include "conf.h"
46			#include "slog.h"
47			#include "util.h"
48
49			char *confbase;
50			char *thisnode;
51			char *identname;
52			char *pidfilename;
53
54			struct configuration conf;
55
56			configuration::configuration ()
57			{
58			init ();
59			}
60
61			configuration::~configuration ()
62			{
63			cleanup ();
64			}
65
66			void configuration::init ()
67			{
68			memset (this, 0, sizeof (*this));
69
70			rekey = DEFAULT_REKEY;
71			keepalive = DEFAULT_KEEPALIVE;
72	pcg	1.2	llevel = L_INFO;
73	pcg	1.5	ip_proto = IPPROTO_GRE;
74	pcg	1.1
75	pcg	1.5	default_node.udp_port = DEFAULT_UDPPORT;
76	pcg	1.1	default_node.connectmode = conf_node::C_ALWAYS;
77			default_node.compress = true;
78	pcg	1.5	default_node.can_send = PROT_UDPv4;
79			default_node.can_recv = PROT_IPv4;
80	pcg	1.1	}
81
82			void configuration::cleanup()
83			{
84			if (rsa_key)
85			RSA_free (rsa_key);
86
87			free (ifname);
88
89			rsa_key = 0;
90			ifname = 0;
91			}
92
93			void
94			configuration::clear_config ()
95			{
96			for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
97			delete *i;
98
99			nodes.clear ();
100
101			cleanup ();
102			init ();
103			}
104
105	pcg	1.5	#define parse_bool(target,name,trueval,falseval) \
106			if (!strcmp (val, "yes")) target = trueval; \
107			else if (!strcmp (val, "no")) target = falseval; \
108			else if (!strcmp (val, "true")) target = trueval; \
109			else if (!strcmp (val, "false")) target = falseval; \
110			else if (!strcmp (val, "on")) target = trueval; \
111			else if (!strcmp (val, "off")) target = falseval; \
112			else \
113			slog (L_WARN, \
114			_("illegal value for '%s', only 'yes\|true\|on' or 'no\|false\|off' allowed, at '%s' line %d"), \
115			name, var, fname, lineno);
116
117	pcg	1.1	void configuration::read_config (bool need_keys)
118			{
119			char *fname;
120			FILE *f;
121
122			clear_config ();
123
124			asprintf (&fname, "%s/vped.conf", confbase);
125			f = fopen (fname, "r");
126
127			if (f)
128			{
129			char line[16384];
130			int lineno = 0;
131			char var, val;
132			conf_node *node = &default_node;
133
134			while (fgets (line, sizeof (line), f))
135			{
136			lineno++;
137
138			{
139			char *end = line + strlen (line);
140
141			while (*end < ' ' && end >= line)
142			end--;
143
144			*++end = 0;
145			}
146
147			char *tok = line;
148
149			retry:
150			var = strtok (tok, "\t =");
151			tok = 0;
152
153			if (!var \|\| !var[0])
154			continue; /* no tokens on this line */
155
156			if (var[0] == '#')
157			continue; /* comment: ignore */
158
159			val = strtok (NULL, "\t\n\r =");
160
161			if (!val \|\| val[0] == '#')
162			{
163			slog (L_WARN,
164			_("no value for variable `%s', at '%s' line %d"),
165			var, fname, lineno);
166			break;
167			}
168
169			if (!strcmp (var, "on"))
170			{
171			if (!::thisnode
172			\|\| (val[0] == '!' && strcmp (val + 1, ::thisnode))
173			\|\| !strcmp (val, ::thisnode))
174			goto retry;
175
176			continue;
177			}
178
179			// truly global
180			if (!strcmp (var, "loglevel"))
181			{
182			loglevel l = string_to_loglevel (val);
183
184			if (l != L_NONE)
185	pcg	1.2	llevel = l;
186	pcg	1.1	else
187			slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
188			}
189	pcg	1.5	else if (!strcmp (var, "ip-proto"))
190			ip_proto = atoi (val);
191	pcg	1.1
192			// per config
193			else if (!strcmp (var, "node"))
194			{
195			default_node.id++;
196
197			node = new conf_node (default_node);
198
199			nodes.push_back (node);
200
201			node->nodename = strdup (val);
202
203			{
204			char *fname;
205			FILE *f;
206
207			asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
208
209			f = fopen (fname, "r");
210			if (f)
211			{
212			node->rsa_key = RSA_new ();
213
214			if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
215			{
216			ERR_load_RSA_strings (); ERR_load_PEM_strings ();
217			slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
218			exit (1);
219			}
220
221			RSA_blinding_on (node->rsa_key, 0);
222
223			fclose (f);
224			}
225			else
226			{
227			slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
228
229			if (need_keys)
230			exit (1);
231			}
232
233			free (fname);
234			}
235
236			if (!::thisnode \|\| !strcmp (node->nodename, ::thisnode))
237			thisnode = node;
238			}
239			else if (!strcmp (var, "private-key"))
240			prikeyfile = strdup (val);
241			else if (!strcmp (var, "ifpersist"))
242			{
243	pcg	1.5	parse_bool (ifpersist, "ifpersist", true, false);
244	pcg	1.1	}
245			else if (!strcmp (var, "ifname"))
246			ifname = strdup (val);
247			else if (!strcmp (var, "rekey"))
248			rekey = atoi (val);
249			else if (!strcmp (var, "keepalive"))
250			keepalive = atoi (val);
251			else if (!strcmp (var, "mtu"))
252			mtu = atoi (val);
253			else if (!strcmp (var, "if-up"))
254			script_if_up = strdup (val);
255			else if (!strcmp (var, "node-up"))
256			script_node_up = strdup (val);
257			else if (!strcmp (var, "node-down"))
258			script_node_down = strdup (val);
259
260			/* node-specific, non-defaultable */
261			else if (node != &default_node && !strcmp (var, "hostname"))
262			{
263			free (node->hostname);
264			node->hostname = strdup (val);
265			}
266
267			/* node-specific, defaultable */
268	pcg	1.4	else if (!strcmp (var, "udp-port"))
269	pcg	1.5	node->udp_port = atoi (val);
270	pcg	1.1	else if (!strcmp (var, "router-priority"))
271			node->routerprio = atoi (val);
272			else if (!strcmp (var, "connect"))
273			{
274			if (!strcmp (val, "ondemand"))
275			node->connectmode = conf_node::C_ONDEMAND;
276			else if (!strcmp (val, "never"))
277			node->connectmode = conf_node::C_NEVER;
278			else if (!strcmp (val, "always"))
279			node->connectmode = conf_node::C_ALWAYS;
280	pcg	1.4	else if (!strcmp (val, "disabled"))
281			node->connectmode = conf_node::C_DISABLED;
282	pcg	1.1	else
283			slog (L_WARN,
284	pcg	1.4	_("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
285	pcg	1.1	var, fname, lineno);
286			}
287	pcg	1.3	else if (!strcmp (var, "inherit-tos"))
288			{
289	pcg	1.5	parse_bool (node->inherit_tos, "inherit-tos", true, false);
290	pcg	1.3	}
291	pcg	1.1	else if (!strcmp (var, "compress"))
292			{
293	pcg	1.5	parse_bool (node->compress, "compress", true, false);
294			}
295			// all these bool options really really cost a lot of executable size!
296			else if (!strcmp (var, "can-send-udp"))
297			{
298			u8 v; parse_bool (v, "can-send-udp", PROT_UDPv4, 0); node->can_send = (node->can_send & ~PROT_UDPv4) \| v;
299			}
300			else if (!strcmp (var, "can-recv-udp"))
301			{
302			u8 v; parse_bool (v, "can-recv-udp", PROT_UDPv4, 0); node->can_recv = (node->can_recv & ~PROT_UDPv4) \| v;
303			}
304			else if (!strcmp (var, "can-send-rawip"))
305			{
306			u8 v; parse_bool (v, "can-send-rawip", PROT_IPv4, 0); node->can_send = (node->can_send & ~PROT_IPv4) \| v;
307			}
308			else if (!strcmp (var, "can-recv-rawip"))
309			{
310			u8 v; parse_bool (v, "can-recv-rawip", PROT_IPv4, 0); node->can_recv = (node->can_recv & ~PROT_IPv4) \| v;
311	pcg	1.1	}
312
313			// unknown or misplaced
314			else
315			{
316			slog (L_WARN,
317			_("unknown or misplaced variable `%s', at '%s' line %d"),
318			var, fname, lineno);
319			}
320			}
321
322			fclose (f);
323			}
324			else
325			{
326			slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
327			exit (1);
328			}
329
330			free (fname);
331
332			fname = config_filename (prikeyfile, "hostkey");
333
334			f = fopen (fname, "r");
335			if (f)
336			{
337			rsa_key = RSA_new ();
338
339			if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
340			{
341			ERR_load_RSA_strings (); ERR_load_PEM_strings ();
342			slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
343			exit (1);
344			}
345
346			RSA_blinding_on (rsa_key, 0);
347
348			fclose (f);
349			}
350			else
351			{
352			slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
353
354			if (need_keys)
355			exit (1);
356			}
357
358			free (fname);
359			}
360
361			char configuration::config_filename (const char name, const char *dflt)
362			{
363			char *fname;
364
365			asprintf (&fname, name ? name : dflt, ::thisnode);
366
367			if (!ABSOLUTE_PATH (fname))
368			{
369			char *rname = fname;
370			asprintf (&fname, "%s/%s", confbase, rname);
371			free (rname);
372			}
373
374			return fname;
375			}
376
377			void
378			configuration::print ()
379			{
380			printf (_("\nConfiguration\n\n"));
381			printf (_("# of nodes: %d\n"), nodes.size ());
382			printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
383			printf (_("MTU: %d\n"), mtu);
384			printf (_("rekeying interval: %d\n"), rekey);
385			printf (_("keepalive interval: %d\n"), keepalive);
386			printf (_("interface: %s\n"), ifname);
387			printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
388			printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1);
389			printf ("\n");
390
391			printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
392			_("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
393
394			for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
395			(*i)->print ();
396
397			printf ("\n");
398			}
399
400			void
401			conf_node::print ()
402			{
403			printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n",
404			id,
405			id >> 8, id & 0xff,
406			compress ? 'Y' : 'N',
407			connectmode == C_ONDEMAND ? "ondemand" :
408			connectmode == C_NEVER ? "never" :
409			connectmode == C_ALWAYS ? "always" : "",
410			nodename,
411			hostname ? hostname : "",
412			hostname ? ":" : "",
413	pcg	1.5	hostname ? udp_port : 0
414	pcg	1.1	);
415			}
416