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;

u8 best_protocol (u8 protset)
{
  if (protset & PROT_IPv4 ) return PROT_IPv4;
  if (protset & PROT_UDPv4) return PROT_UDPv4;
  if (protset & PROT_TCPv4) return PROT_TCPv4;

  return 0;
}

const char *strprotocol (u8 protocol)
{
  if (protocol & PROT_IPv4 ) return "rawip";
  if (protocol & PROT_UDPv4) return "udp";

  return "<unknown>";
}

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.tcp_port    = DEFAULT_UDPPORT;
  default_node.connectmode = conf_node::C_ALWAYS;
  default_node.compress    = true;
  default_node.protocols   = PROT_UDPv4;
}

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, "tcp-port"))
            node->tcp_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, "enable-tcp"))
            {
              u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
            }
          else if (!strcmp (var, "enable-udp"))
            {
              u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
            }
          else if (!strcmp (var, "enable-rawip"))
            {
              u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~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:	1.9
Committed:	Wed Apr 2 05:14:59 2003 UTC (21 years, 1 month ago) by pcg
Content type:	text/plain
Branch:	MAIN
Changes since 1.8:	+4 -3 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	pcg	1.7	u8 best_protocol (u8 protset)
57			{
58	pcg	1.9	if (protset & PROT_IPv4 ) return PROT_IPv4;
59			if (protset & PROT_UDPv4) return PROT_UDPv4;
60			if (protset & PROT_TCPv4) return PROT_TCPv4;
61	pcg	1.7
62	pcg	1.9	return 0;
63	pcg	1.7	}
64
65			const char *strprotocol (u8 protocol)
66			{
67			if (protocol & PROT_IPv4 ) return "rawip";
68			if (protocol & PROT_UDPv4) return "udp";
69
70			return "<unknown>";
71			}
72
73	pcg	1.1	configuration::configuration ()
74			{
75			init ();
76			}
77
78			configuration::~configuration ()
79			{
80			cleanup ();
81			}
82
83			void configuration::init ()
84			{
85			memset (this, 0, sizeof (*this));
86
87			rekey = DEFAULT_REKEY;
88			keepalive = DEFAULT_KEEPALIVE;
89	pcg	1.2	llevel = L_INFO;
90	pcg	1.5	ip_proto = IPPROTO_GRE;
91	pcg	1.1
92	pcg	1.5	default_node.udp_port = DEFAULT_UDPPORT;
93	pcg	1.8	default_node.tcp_port = DEFAULT_UDPPORT;
94	pcg	1.1	default_node.connectmode = conf_node::C_ALWAYS;
95			default_node.compress = true;
96	pcg	1.6	default_node.protocols = PROT_UDPv4;
97	pcg	1.1	}
98
99			void configuration::cleanup()
100			{
101			if (rsa_key)
102			RSA_free (rsa_key);
103
104			free (ifname);
105
106			rsa_key = 0;
107			ifname = 0;
108			}
109
110			void
111			configuration::clear_config ()
112			{
113			for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
114			delete *i;
115
116			nodes.clear ();
117
118			cleanup ();
119			init ();
120			}
121
122	pcg	1.5	#define parse_bool(target,name,trueval,falseval) \
123			if (!strcmp (val, "yes")) target = trueval; \
124			else if (!strcmp (val, "no")) target = falseval; \
125			else if (!strcmp (val, "true")) target = trueval; \
126			else if (!strcmp (val, "false")) target = falseval; \
127			else if (!strcmp (val, "on")) target = trueval; \
128			else if (!strcmp (val, "off")) target = falseval; \
129			else \
130			slog (L_WARN, \
131			_("illegal value for '%s', only 'yes\|true\|on' or 'no\|false\|off' allowed, at '%s' line %d"), \
132			name, var, fname, lineno);
133
134	pcg	1.1	void configuration::read_config (bool need_keys)
135			{
136			char *fname;
137			FILE *f;
138
139			clear_config ();
140
141			asprintf (&fname, "%s/vped.conf", confbase);
142			f = fopen (fname, "r");
143
144			if (f)
145			{
146			char line[16384];
147			int lineno = 0;
148			char var, val;
149			conf_node *node = &default_node;
150
151			while (fgets (line, sizeof (line), f))
152			{
153			lineno++;
154
155			{
156			char *end = line + strlen (line);
157
158			while (*end < ' ' && end >= line)
159			end--;
160
161			*++end = 0;
162			}
163
164			char *tok = line;
165
166			retry:
167			var = strtok (tok, "\t =");
168			tok = 0;
169
170			if (!var \|\| !var[0])
171			continue; /* no tokens on this line */
172
173			if (var[0] == '#')
174			continue; /* comment: ignore */
175
176			val = strtok (NULL, "\t\n\r =");
177
178			if (!val \|\| val[0] == '#')
179			{
180			slog (L_WARN,
181			_("no value for variable `%s', at '%s' line %d"),
182			var, fname, lineno);
183			break;
184			}
185
186			if (!strcmp (var, "on"))
187			{
188			if (!::thisnode
189			\|\| (val[0] == '!' && strcmp (val + 1, ::thisnode))
190			\|\| !strcmp (val, ::thisnode))
191			goto retry;
192
193			continue;
194			}
195
196			// truly global
197			if (!strcmp (var, "loglevel"))
198			{
199			loglevel l = string_to_loglevel (val);
200
201			if (l != L_NONE)
202	pcg	1.2	llevel = l;
203	pcg	1.1	else
204			slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
205			}
206	pcg	1.5	else if (!strcmp (var, "ip-proto"))
207			ip_proto = atoi (val);
208	pcg	1.1
209			// per config
210			else if (!strcmp (var, "node"))
211			{
212			default_node.id++;
213
214			node = new conf_node (default_node);
215
216			nodes.push_back (node);
217
218			node->nodename = strdup (val);
219
220			{
221			char *fname;
222			FILE *f;
223
224			asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
225
226			f = fopen (fname, "r");
227			if (f)
228			{
229			node->rsa_key = RSA_new ();
230
231			if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
232			{
233			ERR_load_RSA_strings (); ERR_load_PEM_strings ();
234			slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
235			exit (1);
236			}
237
238			RSA_blinding_on (node->rsa_key, 0);
239
240			fclose (f);
241			}
242			else
243			{
244			slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
245
246			if (need_keys)
247			exit (1);
248			}
249
250			free (fname);
251			}
252
253			if (!::thisnode \|\| !strcmp (node->nodename, ::thisnode))
254			thisnode = node;
255			}
256			else if (!strcmp (var, "private-key"))
257			prikeyfile = strdup (val);
258			else if (!strcmp (var, "ifpersist"))
259			{
260	pcg	1.5	parse_bool (ifpersist, "ifpersist", true, false);
261	pcg	1.1	}
262			else if (!strcmp (var, "ifname"))
263			ifname = strdup (val);
264			else if (!strcmp (var, "rekey"))
265			rekey = atoi (val);
266			else if (!strcmp (var, "keepalive"))
267			keepalive = atoi (val);
268			else if (!strcmp (var, "mtu"))
269			mtu = atoi (val);
270			else if (!strcmp (var, "if-up"))
271			script_if_up = strdup (val);
272			else if (!strcmp (var, "node-up"))
273			script_node_up = strdup (val);
274			else if (!strcmp (var, "node-down"))
275			script_node_down = strdup (val);
276
277			/* node-specific, non-defaultable */
278			else if (node != &default_node && !strcmp (var, "hostname"))
279			{
280			free (node->hostname);
281			node->hostname = strdup (val);
282			}
283
284			/* node-specific, defaultable */
285	pcg	1.4	else if (!strcmp (var, "udp-port"))
286	pcg	1.5	node->udp_port = atoi (val);
287	pcg	1.8	else if (!strcmp (var, "tcp-port"))
288			node->tcp_port = atoi (val);
289	pcg	1.1	else if (!strcmp (var, "router-priority"))
290			node->routerprio = atoi (val);
291			else if (!strcmp (var, "connect"))
292			{
293			if (!strcmp (val, "ondemand"))
294			node->connectmode = conf_node::C_ONDEMAND;
295			else if (!strcmp (val, "never"))
296			node->connectmode = conf_node::C_NEVER;
297			else if (!strcmp (val, "always"))
298			node->connectmode = conf_node::C_ALWAYS;
299	pcg	1.4	else if (!strcmp (val, "disabled"))
300			node->connectmode = conf_node::C_DISABLED;
301	pcg	1.1	else
302			slog (L_WARN,
303	pcg	1.4	_("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
304	pcg	1.1	var, fname, lineno);
305			}
306	pcg	1.3	else if (!strcmp (var, "inherit-tos"))
307			{
308	pcg	1.5	parse_bool (node->inherit_tos, "inherit-tos", true, false);
309	pcg	1.3	}
310	pcg	1.1	else if (!strcmp (var, "compress"))
311			{
312	pcg	1.5	parse_bool (node->compress, "compress", true, false);
313			}
314			// all these bool options really really cost a lot of executable size!
315	pcg	1.8	else if (!strcmp (var, "enable-tcp"))
316			{
317			u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) \| v;
318			}
319	pcg	1.6	else if (!strcmp (var, "enable-udp"))
320	pcg	1.5	{
321	pcg	1.6	u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) \| v;
322	pcg	1.5	}
323	pcg	1.6	else if (!strcmp (var, "enable-rawip"))
324	pcg	1.5	{
325	pcg	1.6	u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) \| v;
326	pcg	1.1	}
327
328			// unknown or misplaced
329			else
330			{
331			slog (L_WARN,
332			_("unknown or misplaced variable `%s', at '%s' line %d"),
333			var, fname, lineno);
334			}
335			}
336
337			fclose (f);
338			}
339			else
340			{
341			slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
342			exit (1);
343			}
344
345			free (fname);
346
347			fname = config_filename (prikeyfile, "hostkey");
348
349			f = fopen (fname, "r");
350			if (f)
351			{
352			rsa_key = RSA_new ();
353
354			if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
355			{
356			ERR_load_RSA_strings (); ERR_load_PEM_strings ();
357			slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
358			exit (1);
359			}
360
361			RSA_blinding_on (rsa_key, 0);
362
363			fclose (f);
364			}
365			else
366			{
367			slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
368
369			if (need_keys)
370			exit (1);
371			}
372
373			free (fname);
374			}
375
376			char configuration::config_filename (const char name, const char *dflt)
377			{
378			char *fname;
379
380			asprintf (&fname, name ? name : dflt, ::thisnode);
381
382			if (!ABSOLUTE_PATH (fname))
383			{
384			char *rname = fname;
385			asprintf (&fname, "%s/%s", confbase, rname);
386			free (rname);
387			}
388
389			return fname;
390			}
391
392			void
393			configuration::print ()
394			{
395			printf (_("\nConfiguration\n\n"));
396			printf (_("# of nodes: %d\n"), nodes.size ());
397			printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
398			printf (_("MTU: %d\n"), mtu);
399			printf (_("rekeying interval: %d\n"), rekey);
400			printf (_("keepalive interval: %d\n"), keepalive);
401			printf (_("interface: %s\n"), ifname);
402			printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
403			printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1);
404			printf ("\n");
405
406			printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
407			_("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
408
409			for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
410			(*i)->print ();
411
412			printf ("\n");
413			}
414
415			void
416			conf_node::print ()
417			{
418			printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n",
419			id,
420			id >> 8, id & 0xff,
421			compress ? 'Y' : 'N',
422			connectmode == C_ONDEMAND ? "ondemand" :
423			connectmode == C_NEVER ? "never" :
424			connectmode == C_ALWAYS ? "always" : "",
425			nodename,
426			hostname ? hostname : "",
427			hostname ? ":" : "",
428	pcg	1.5	hostname ? udp_port : 0
429	pcg	1.1	);
430			}
431