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 "netcompat.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_ICMPv4) return PROT_ICMPv4;
  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_ICMPv4) return "icmp";
  if (protocol & PROT_UDPv4 ) return "udp";
  if (protocol & PROT_TCPv4 ) return "tcp";

  return "<unknown>";
}

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
          );
}

conf_node::~conf_node ()
{
  if (rsa_key)
    RSA_free (rsa_key);

  free (nodename);
  free (hostname);
}

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

  rekey     = DEFAULT_REKEY;
  keepalive = DEFAULT_KEEPALIVE;
  llevel    = L_INFO;
  ip_proto  = IPPROTO_GRE;
#if ENABLE_ICMP
  icmp_type = ICMP_ECHOREPLY;
#endif

  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);

  rsa_key = 0;

  free (ifname);     ifname     = 0;
#if ENABLE_HTTP_PROXY
  free (proxy_host); proxy_host = 0;
  free (proxy_auth); proxy_auth = 0;
#endif
}

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);
#if ENABLE_ICMP
          //TODO: error message
          else if (!strcmp (var, "icmp-type"))
            icmp_type = atoi (val);
#endif

          // 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);
#if ENABLE_HTTP_PROXY
          else if (!strcmp (var, "http-proxy-host"))
            proxy_host = strdup (val);
          else if (!strcmp (var, "http-proxy-port"))
            proxy_port = atoi (val);
          else if (!strcmp (var, "http-proxy-auth"))
            proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
#endif

          /* 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"))
            {
#if ENABLE_TCP
              u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
#endif
            }
          else if (!strcmp (var, "enable-icmp"))
            {
#if ENABLE_ICMP
              u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
#endif
            }
          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) * 8 : -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");
}

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

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


Revision:	1.17
Committed:	Tue Oct 14 15:48:15 2003 UTC (20 years, 7 months ago) by pcg
Content type:	text/plain
Branch:	MAIN
Changes since 1.16:	+1 -11 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	1.17	#include "netcompat.h"
37	pcg	1.5
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	1.13	if (protset & PROT_IPv4 ) return PROT_IPv4;
59			if (protset & PROT_ICMPv4) return PROT_ICMPv4;
60			if (protset & PROT_UDPv4 ) return PROT_UDPv4;
61			if (protset & PROT_TCPv4 ) return PROT_TCPv4;
62	pcg	1.7
63	pcg	1.9	return 0;
64	pcg	1.7	}
65
66			const char *strprotocol (u8 protocol)
67			{
68	pcg	1.13	if (protocol & PROT_IPv4 ) return "rawip";
69			if (protocol & PROT_ICMPv4) return "icmp";
70			if (protocol & PROT_UDPv4 ) return "udp";
71			if (protocol & PROT_TCPv4 ) return "tcp";
72	pcg	1.7
73			return "<unknown>";
74			}
75
76	pcg	1.12	void
77			conf_node::print ()
78	pcg	1.1	{
79	pcg	1.12	printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n",
80			id,
81			id >> 8, id & 0xff,
82			compress ? 'Y' : 'N',
83			connectmode == C_ONDEMAND ? "ondemand" :
84			connectmode == C_NEVER ? "never" :
85			connectmode == C_ALWAYS ? "always" : "",
86			nodename,
87			hostname ? hostname : "",
88			hostname ? ":" : "",
89			hostname ? udp_port : 0
90			);
91	pcg	1.1	}
92
93	pcg	1.12	conf_node::~conf_node ()
94	pcg	1.1	{
95	pcg	1.12	if (rsa_key)
96			RSA_free (rsa_key);
97
98			free (nodename);
99			free (hostname);
100	pcg	1.1	}
101
102			void configuration::init ()
103			{
104			memset (this, 0, sizeof (*this));
105
106			rekey = DEFAULT_REKEY;
107			keepalive = DEFAULT_KEEPALIVE;
108	pcg	1.2	llevel = L_INFO;
109	pcg	1.5	ip_proto = IPPROTO_GRE;
110	pcg	1.16	#if ENABLE_ICMP
111	pcg	1.13	icmp_type = ICMP_ECHOREPLY;
112	pcg	1.16	#endif
113	pcg	1.1
114	pcg	1.5	default_node.udp_port = DEFAULT_UDPPORT;
115	pcg	1.8	default_node.tcp_port = DEFAULT_UDPPORT;
116	pcg	1.1	default_node.connectmode = conf_node::C_ALWAYS;
117			default_node.compress = true;
118	pcg	1.6	default_node.protocols = PROT_UDPv4;
119	pcg	1.1	}
120
121			void configuration::cleanup()
122			{
123			if (rsa_key)
124			RSA_free (rsa_key);
125
126	pcg	1.12	rsa_key = 0;
127	pcg	1.1
128	pcg	1.12	free (ifname); ifname = 0;
129			#if ENABLE_HTTP_PROXY
130			free (proxy_host); proxy_host = 0;
131			free (proxy_auth); proxy_auth = 0;
132			#endif
133	pcg	1.1	}
134
135			void
136			configuration::clear_config ()
137			{
138			for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
139			delete *i;
140
141			nodes.clear ();
142
143			cleanup ();
144			init ();
145			}
146
147	pcg	1.5	#define parse_bool(target,name,trueval,falseval) \
148			if (!strcmp (val, "yes")) target = trueval; \
149			else if (!strcmp (val, "no")) target = falseval; \
150			else if (!strcmp (val, "true")) target = trueval; \
151			else if (!strcmp (val, "false")) target = falseval; \
152			else if (!strcmp (val, "on")) target = trueval; \
153			else if (!strcmp (val, "off")) target = falseval; \
154			else \
155			slog (L_WARN, \
156			_("illegal value for '%s', only 'yes\|true\|on' or 'no\|false\|off' allowed, at '%s' line %d"), \
157			name, var, fname, lineno);
158
159	pcg	1.1	void configuration::read_config (bool need_keys)
160			{
161			char *fname;
162			FILE *f;
163
164			clear_config ();
165
166			asprintf (&fname, "%s/vped.conf", confbase);
167			f = fopen (fname, "r");
168
169			if (f)
170			{
171			char line[16384];
172			int lineno = 0;
173			char var, val;
174			conf_node *node = &default_node;
175
176			while (fgets (line, sizeof (line), f))
177			{
178			lineno++;
179
180			{
181			char *end = line + strlen (line);
182
183			while (*end < ' ' && end >= line)
184			end--;
185
186			*++end = 0;
187			}
188
189			char *tok = line;
190
191			retry:
192			var = strtok (tok, "\t =");
193			tok = 0;
194
195			if (!var \|\| !var[0])
196			continue; /* no tokens on this line */
197
198			if (var[0] == '#')
199			continue; /* comment: ignore */
200
201			val = strtok (NULL, "\t\n\r =");
202
203			if (!val \|\| val[0] == '#')
204			{
205			slog (L_WARN,
206			_("no value for variable `%s', at '%s' line %d"),
207			var, fname, lineno);
208			break;
209			}
210
211			if (!strcmp (var, "on"))
212			{
213			if (!::thisnode
214			\|\| (val[0] == '!' && strcmp (val + 1, ::thisnode))
215			\|\| !strcmp (val, ::thisnode))
216			goto retry;
217
218			continue;
219			}
220
221			// truly global
222			if (!strcmp (var, "loglevel"))
223			{
224			loglevel l = string_to_loglevel (val);
225
226			if (l != L_NONE)
227	pcg	1.2	llevel = l;
228	pcg	1.1	else
229			slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
230			}
231	pcg	1.5	else if (!strcmp (var, "ip-proto"))
232			ip_proto = atoi (val);
233	pcg	1.16	#if ENABLE_ICMP
234			//TODO: error message
235	pcg	1.13	else if (!strcmp (var, "icmp-type"))
236			icmp_type = atoi (val);
237	pcg	1.16	#endif
238	pcg	1.1
239			// per config
240			else if (!strcmp (var, "node"))
241			{
242			default_node.id++;
243
244			node = new conf_node (default_node);
245
246			nodes.push_back (node);
247
248			node->nodename = strdup (val);
249
250			{
251			char *fname;
252			FILE *f;
253
254			asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
255
256			f = fopen (fname, "r");
257			if (f)
258			{
259			node->rsa_key = RSA_new ();
260
261			if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
262			{
263			ERR_load_RSA_strings (); ERR_load_PEM_strings ();
264			slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
265			exit (1);
266			}
267
268			RSA_blinding_on (node->rsa_key, 0);
269
270			fclose (f);
271			}
272			else
273			{
274			slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
275
276			if (need_keys)
277			exit (1);
278			}
279
280			free (fname);
281			}
282
283			if (!::thisnode \|\| !strcmp (node->nodename, ::thisnode))
284			thisnode = node;
285			}
286			else if (!strcmp (var, "private-key"))
287			prikeyfile = strdup (val);
288			else if (!strcmp (var, "ifpersist"))
289			{
290	pcg	1.5	parse_bool (ifpersist, "ifpersist", true, false);
291	pcg	1.1	}
292			else if (!strcmp (var, "ifname"))
293			ifname = strdup (val);
294			else if (!strcmp (var, "rekey"))
295			rekey = atoi (val);
296			else if (!strcmp (var, "keepalive"))
297			keepalive = atoi (val);
298			else if (!strcmp (var, "mtu"))
299			mtu = atoi (val);
300			else if (!strcmp (var, "if-up"))
301			script_if_up = strdup (val);
302			else if (!strcmp (var, "node-up"))
303			script_node_up = strdup (val);
304			else if (!strcmp (var, "node-down"))
305			script_node_down = strdup (val);
306	pcg	1.12	#if ENABLE_HTTP_PROXY
307			else if (!strcmp (var, "http-proxy-host"))
308			proxy_host = strdup (val);
309			else if (!strcmp (var, "http-proxy-port"))
310			proxy_port = atoi (val);
311			else if (!strcmp (var, "http-proxy-auth"))
312			proxy_auth = (char )base64_encode ((const u8 )val, strlen (val));
313			#endif
314	pcg	1.1
315			/* node-specific, non-defaultable */
316			else if (node != &default_node && !strcmp (var, "hostname"))
317			{
318			free (node->hostname);
319			node->hostname = strdup (val);
320			}
321
322			/* node-specific, defaultable */
323	pcg	1.4	else if (!strcmp (var, "udp-port"))
324	pcg	1.5	node->udp_port = atoi (val);
325	pcg	1.8	else if (!strcmp (var, "tcp-port"))
326			node->tcp_port = atoi (val);
327	pcg	1.1	else if (!strcmp (var, "router-priority"))
328			node->routerprio = atoi (val);
329			else if (!strcmp (var, "connect"))
330			{
331			if (!strcmp (val, "ondemand"))
332			node->connectmode = conf_node::C_ONDEMAND;
333			else if (!strcmp (val, "never"))
334			node->connectmode = conf_node::C_NEVER;
335			else if (!strcmp (val, "always"))
336			node->connectmode = conf_node::C_ALWAYS;
337	pcg	1.4	else if (!strcmp (val, "disabled"))
338			node->connectmode = conf_node::C_DISABLED;
339	pcg	1.1	else
340			slog (L_WARN,
341	pcg	1.4	_("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
342	pcg	1.1	var, fname, lineno);
343			}
344	pcg	1.3	else if (!strcmp (var, "inherit-tos"))
345			{
346	pcg	1.5	parse_bool (node->inherit_tos, "inherit-tos", true, false);
347	pcg	1.3	}
348	pcg	1.1	else if (!strcmp (var, "compress"))
349			{
350	pcg	1.5	parse_bool (node->compress, "compress", true, false);
351			}
352			// all these bool options really really cost a lot of executable size!
353	pcg	1.8	else if (!strcmp (var, "enable-tcp"))
354			{
355	pcg	1.11	#if ENABLE_TCP
356	pcg	1.8	u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) \| v;
357	pcg	1.13	#endif
358			}
359			else if (!strcmp (var, "enable-icmp"))
360			{
361			#if ENABLE_ICMP
362			u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) \| v;
363	pcg	1.11	#endif
364	pcg	1.8	}
365	pcg	1.6	else if (!strcmp (var, "enable-udp"))
366	pcg	1.5	{
367	pcg	1.6	u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) \| v;
368	pcg	1.5	}
369	pcg	1.6	else if (!strcmp (var, "enable-rawip"))
370	pcg	1.5	{
371	pcg	1.6	u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) \| v;
372	pcg	1.1	}
373
374			// unknown or misplaced
375			else
376	pcg	1.12	slog (L_WARN,
377			_("unknown or misplaced variable `%s', at '%s' line %d"),
378			var, fname, lineno);
379	pcg	1.1	}
380
381			fclose (f);
382			}
383			else
384			{
385			slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
386			exit (1);
387			}
388
389			free (fname);
390
391			fname = config_filename (prikeyfile, "hostkey");
392
393			f = fopen (fname, "r");
394			if (f)
395			{
396			rsa_key = RSA_new ();
397
398			if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
399			{
400			ERR_load_RSA_strings (); ERR_load_PEM_strings ();
401			slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
402			exit (1);
403			}
404
405			RSA_blinding_on (rsa_key, 0);
406
407			fclose (f);
408			}
409			else
410			{
411			slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
412
413			if (need_keys)
414			exit (1);
415			}
416
417			free (fname);
418			}
419
420			char configuration::config_filename (const char name, const char *dflt)
421			{
422			char *fname;
423
424			asprintf (&fname, name ? name : dflt, ::thisnode);
425
426			if (!ABSOLUTE_PATH (fname))
427			{
428			char *rname = fname;
429			asprintf (&fname, "%s/%s", confbase, rname);
430			free (rname);
431			}
432
433			return fname;
434			}
435
436			void
437			configuration::print ()
438			{
439			printf (_("\nConfiguration\n\n"));
440			printf (_("# of nodes: %d\n"), nodes.size ());
441			printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
442			printf (_("MTU: %d\n"), mtu);
443			printf (_("rekeying interval: %d\n"), rekey);
444			printf (_("keepalive interval: %d\n"), keepalive);
445			printf (_("interface: %s\n"), ifname);
446			printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
447	pcg	1.15	printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
448	pcg	1.1	printf ("\n");
449
450			printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
451			_("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
452
453			for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
454			(*i)->print ();
455
456			printf ("\n");
457			}
458
459	pcg	1.12	configuration::configuration ()
460			{
461			init ();
462			}
463
464			configuration::~configuration ()
465	pcg	1.1	{
466	pcg	1.12	cleanup ();
467	pcg	1.1	}
468	pcg	1.12
469	pcg	1.1