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 <netinet/icmp.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;
  icmp_type = ICMP_ECHOREPLY;

  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);
          else if (!strcmp (var, "icmp-type"))
            icmp_type = 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);
#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) : -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:	1.13
Committed:	Tue Apr 8 02:00:54 2003 UTC (21 years, 1 month ago) by pcg
Content type:	text/plain
Branch:	MAIN
Changes since 1.12:	+18 -6 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	pcg	1.13	#include <netinet/icmp.h>
38	pcg	1.5
39	pcg	1.1	#include <openssl/err.h>
40			#include <openssl/pem.h>
41			#include <openssl/rsa.h>
42			#include <openssl/rand.h>
43
44			#include "gettext.h"
45
46			#include "conf.h"
47			#include "slog.h"
48			#include "util.h"
49
50			char *confbase;
51			char *thisnode;
52			char *identname;
53			char *pidfilename;
54
55			struct configuration conf;
56
57	pcg	1.7	u8 best_protocol (u8 protset)
58			{
59	pcg	1.13	if (protset & PROT_IPv4 ) return PROT_IPv4;
60			if (protset & PROT_ICMPv4) return PROT_ICMPv4;
61			if (protset & PROT_UDPv4 ) return PROT_UDPv4;
62			if (protset & PROT_TCPv4 ) return PROT_TCPv4;
63	pcg	1.7
64	pcg	1.9	return 0;
65	pcg	1.7	}
66
67			const char *strprotocol (u8 protocol)
68			{
69	pcg	1.13	if (protocol & PROT_IPv4 ) return "rawip";
70			if (protocol & PROT_ICMPv4) return "icmp";
71			if (protocol & PROT_UDPv4 ) return "udp";
72			if (protocol & PROT_TCPv4 ) return "tcp";
73	pcg	1.7
74			return "<unknown>";
75			}
76
77	pcg	1.12	void
78			conf_node::print ()
79	pcg	1.1	{
80	pcg	1.12	printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n",
81			id,
82			id >> 8, id & 0xff,
83			compress ? 'Y' : 'N',
84			connectmode == C_ONDEMAND ? "ondemand" :
85			connectmode == C_NEVER ? "never" :
86			connectmode == C_ALWAYS ? "always" : "",
87			nodename,
88			hostname ? hostname : "",
89			hostname ? ":" : "",
90			hostname ? udp_port : 0
91			);
92	pcg	1.1	}
93
94	pcg	1.12	conf_node::~conf_node ()
95	pcg	1.1	{
96	pcg	1.12	if (rsa_key)
97			RSA_free (rsa_key);
98
99			free (nodename);
100			free (hostname);
101	pcg	1.1	}
102
103			void configuration::init ()
104			{
105			memset (this, 0, sizeof (*this));
106
107			rekey = DEFAULT_REKEY;
108			keepalive = DEFAULT_KEEPALIVE;
109	pcg	1.2	llevel = L_INFO;
110	pcg	1.5	ip_proto = IPPROTO_GRE;
111	pcg	1.13	icmp_type = ICMP_ECHOREPLY;
112	pcg	1.1
113	pcg	1.5	default_node.udp_port = DEFAULT_UDPPORT;
114	pcg	1.8	default_node.tcp_port = DEFAULT_UDPPORT;
115	pcg	1.1	default_node.connectmode = conf_node::C_ALWAYS;
116			default_node.compress = true;
117	pcg	1.6	default_node.protocols = PROT_UDPv4;
118	pcg	1.1	}
119
120			void configuration::cleanup()
121			{
122			if (rsa_key)
123			RSA_free (rsa_key);
124
125	pcg	1.12	rsa_key = 0;
126	pcg	1.1
127	pcg	1.12	free (ifname); ifname = 0;
128			#if ENABLE_HTTP_PROXY
129			free (proxy_host); proxy_host = 0;
130			free (proxy_auth); proxy_auth = 0;
131			#endif
132	pcg	1.1	}
133
134			void
135			configuration::clear_config ()
136			{
137			for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
138			delete *i;
139
140			nodes.clear ();
141
142			cleanup ();
143			init ();
144			}
145
146	pcg	1.5	#define parse_bool(target,name,trueval,falseval) \
147			if (!strcmp (val, "yes")) target = trueval; \
148			else if (!strcmp (val, "no")) target = falseval; \
149			else if (!strcmp (val, "true")) target = trueval; \
150			else if (!strcmp (val, "false")) target = falseval; \
151			else if (!strcmp (val, "on")) target = trueval; \
152			else if (!strcmp (val, "off")) target = falseval; \
153			else \
154			slog (L_WARN, \
155			_("illegal value for '%s', only 'yes\|true\|on' or 'no\|false\|off' allowed, at '%s' line %d"), \
156			name, var, fname, lineno);
157
158	pcg	1.1	void configuration::read_config (bool need_keys)
159			{
160			char *fname;
161			FILE *f;
162
163			clear_config ();
164
165			asprintf (&fname, "%s/vped.conf", confbase);
166			f = fopen (fname, "r");
167
168			if (f)
169			{
170			char line[16384];
171			int lineno = 0;
172			char var, val;
173			conf_node *node = &default_node;
174
175			while (fgets (line, sizeof (line), f))
176			{
177			lineno++;
178
179			{
180			char *end = line + strlen (line);
181
182			while (*end < ' ' && end >= line)
183			end--;
184
185			*++end = 0;
186			}
187
188			char *tok = line;
189
190			retry:
191			var = strtok (tok, "\t =");
192			tok = 0;
193
194			if (!var \|\| !var[0])
195			continue; /* no tokens on this line */
196
197			if (var[0] == '#')
198			continue; /* comment: ignore */
199
200			val = strtok (NULL, "\t\n\r =");
201
202			if (!val \|\| val[0] == '#')
203			{
204			slog (L_WARN,
205			_("no value for variable `%s', at '%s' line %d"),
206			var, fname, lineno);
207			break;
208			}
209
210			if (!strcmp (var, "on"))
211			{
212			if (!::thisnode
213			\|\| (val[0] == '!' && strcmp (val + 1, ::thisnode))
214			\|\| !strcmp (val, ::thisnode))
215			goto retry;
216
217			continue;
218			}
219
220			// truly global
221			if (!strcmp (var, "loglevel"))
222			{
223			loglevel l = string_to_loglevel (val);
224
225			if (l != L_NONE)
226	pcg	1.2	llevel = l;
227	pcg	1.1	else
228			slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
229			}
230	pcg	1.5	else if (!strcmp (var, "ip-proto"))
231			ip_proto = atoi (val);
232	pcg	1.13	else if (!strcmp (var, "icmp-type"))
233			icmp_type = atoi (val);
234	pcg	1.1
235			// per config
236			else if (!strcmp (var, "node"))
237			{
238			default_node.id++;
239
240			node = new conf_node (default_node);
241
242			nodes.push_back (node);
243
244			node->nodename = strdup (val);
245
246			{
247			char *fname;
248			FILE *f;
249
250			asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
251
252			f = fopen (fname, "r");
253			if (f)
254			{
255			node->rsa_key = RSA_new ();
256
257			if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
258			{
259			ERR_load_RSA_strings (); ERR_load_PEM_strings ();
260			slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
261			exit (1);
262			}
263
264			RSA_blinding_on (node->rsa_key, 0);
265
266			fclose (f);
267			}
268			else
269			{
270			slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
271
272			if (need_keys)
273			exit (1);
274			}
275
276			free (fname);
277			}
278
279			if (!::thisnode \|\| !strcmp (node->nodename, ::thisnode))
280			thisnode = node;
281			}
282			else if (!strcmp (var, "private-key"))
283			prikeyfile = strdup (val);
284			else if (!strcmp (var, "ifpersist"))
285			{
286	pcg	1.5	parse_bool (ifpersist, "ifpersist", true, false);
287	pcg	1.1	}
288			else if (!strcmp (var, "ifname"))
289			ifname = strdup (val);
290			else if (!strcmp (var, "rekey"))
291			rekey = atoi (val);
292			else if (!strcmp (var, "keepalive"))
293			keepalive = atoi (val);
294			else if (!strcmp (var, "mtu"))
295			mtu = atoi (val);
296			else if (!strcmp (var, "if-up"))
297			script_if_up = strdup (val);
298			else if (!strcmp (var, "node-up"))
299			script_node_up = strdup (val);
300			else if (!strcmp (var, "node-down"))
301			script_node_down = strdup (val);
302	pcg	1.12	#if ENABLE_HTTP_PROXY
303			else if (!strcmp (var, "http-proxy-host"))
304			proxy_host = strdup (val);
305			else if (!strcmp (var, "http-proxy-port"))
306			proxy_port = atoi (val);
307			else if (!strcmp (var, "http-proxy-auth"))
308			proxy_auth = (char )base64_encode ((const u8 )val, strlen (val));
309			#endif
310	pcg	1.1
311			/* node-specific, non-defaultable */
312			else if (node != &default_node && !strcmp (var, "hostname"))
313			{
314			free (node->hostname);
315			node->hostname = strdup (val);
316			}
317
318			/* node-specific, defaultable */
319	pcg	1.4	else if (!strcmp (var, "udp-port"))
320	pcg	1.5	node->udp_port = atoi (val);
321	pcg	1.8	else if (!strcmp (var, "tcp-port"))
322			node->tcp_port = atoi (val);
323	pcg	1.1	else if (!strcmp (var, "router-priority"))
324			node->routerprio = atoi (val);
325			else if (!strcmp (var, "connect"))
326			{
327			if (!strcmp (val, "ondemand"))
328			node->connectmode = conf_node::C_ONDEMAND;
329			else if (!strcmp (val, "never"))
330			node->connectmode = conf_node::C_NEVER;
331			else if (!strcmp (val, "always"))
332			node->connectmode = conf_node::C_ALWAYS;
333	pcg	1.4	else if (!strcmp (val, "disabled"))
334			node->connectmode = conf_node::C_DISABLED;
335	pcg	1.1	else
336			slog (L_WARN,
337	pcg	1.4	_("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
338	pcg	1.1	var, fname, lineno);
339			}
340	pcg	1.3	else if (!strcmp (var, "inherit-tos"))
341			{
342	pcg	1.5	parse_bool (node->inherit_tos, "inherit-tos", true, false);
343	pcg	1.3	}
344	pcg	1.1	else if (!strcmp (var, "compress"))
345			{
346	pcg	1.5	parse_bool (node->compress, "compress", true, false);
347			}
348			// all these bool options really really cost a lot of executable size!
349	pcg	1.8	else if (!strcmp (var, "enable-tcp"))
350			{
351	pcg	1.11	#if ENABLE_TCP
352	pcg	1.8	u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) \| v;
353	pcg	1.13	#endif
354			}
355			else if (!strcmp (var, "enable-icmp"))
356			{
357			#if ENABLE_ICMP
358			u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) \| v;
359	pcg	1.11	#endif
360	pcg	1.8	}
361	pcg	1.6	else if (!strcmp (var, "enable-udp"))
362	pcg	1.5	{
363	pcg	1.6	u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) \| v;
364	pcg	1.5	}
365	pcg	1.6	else if (!strcmp (var, "enable-rawip"))
366	pcg	1.5	{
367	pcg	1.6	u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) \| v;
368	pcg	1.1	}
369
370			// unknown or misplaced
371			else
372	pcg	1.12	slog (L_WARN,
373			_("unknown or misplaced variable `%s', at '%s' line %d"),
374			var, fname, lineno);
375	pcg	1.1	}
376
377			fclose (f);
378			}
379			else
380			{
381			slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
382			exit (1);
383			}
384
385			free (fname);
386
387			fname = config_filename (prikeyfile, "hostkey");
388
389			f = fopen (fname, "r");
390			if (f)
391			{
392			rsa_key = RSA_new ();
393
394			if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
395			{
396			ERR_load_RSA_strings (); ERR_load_PEM_strings ();
397			slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
398			exit (1);
399			}
400
401			RSA_blinding_on (rsa_key, 0);
402
403			fclose (f);
404			}
405			else
406			{
407			slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
408
409			if (need_keys)
410			exit (1);
411			}
412
413			free (fname);
414			}
415
416			char configuration::config_filename (const char name, const char *dflt)
417			{
418			char *fname;
419
420			asprintf (&fname, name ? name : dflt, ::thisnode);
421
422			if (!ABSOLUTE_PATH (fname))
423			{
424			char *rname = fname;
425			asprintf (&fname, "%s/%s", confbase, rname);
426			free (rname);
427			}
428
429			return fname;
430			}
431
432			void
433			configuration::print ()
434			{
435			printf (_("\nConfiguration\n\n"));
436			printf (_("# of nodes: %d\n"), nodes.size ());
437			printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
438			printf (_("MTU: %d\n"), mtu);
439			printf (_("rekeying interval: %d\n"), rekey);
440			printf (_("keepalive interval: %d\n"), keepalive);
441			printf (_("interface: %s\n"), ifname);
442			printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
443			printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1);
444			printf ("\n");
445
446			printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
447			_("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
448
449			for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
450			(*i)->print ();
451
452			printf ("\n");
453			}
454
455	pcg	1.12	configuration::configuration ()
456			{
457			init ();
458			}
459
460			configuration::~configuration ()
461	pcg	1.1	{
462	pcg	1.12	cleanup ();
463	pcg	1.1	}
464	pcg	1.12
465	pcg	1.1