gvpe/src/conf.C

/*
    conf.c -- configuration code
    Copyright (C) 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));

  mtu       = DEFAULT_MTU;
  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:	1.19
Committed:	Thu Oct 16 20:35:14 2003 UTC (20 years, 7 months ago) by pcg
Content type:	text/plain
Branch:	MAIN
Changes since 1.18:	+1 -0 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	pcg	1.1	/*
2			conf.c -- configuration code
3	pcg	1.18	Copyright (C) 2003 Marc Lehmann <pcg@goof.com>
4	pcg	1.1
5			This program is free software; you can redistribute it and/or modify
6			it under the terms of the GNU General Public License as published by
7			the Free Software Foundation; either version 2 of the License, or
8			(at your option) any later version.
9
10			This program is distributed in the hope that it will be useful,
11			but WITHOUT ANY WARRANTY; without even the implied warranty of
12			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13			GNU General Public License for more details.
14
15			You should have received a copy of the GNU General Public License
16			along with this program; if not, write to the Free Software
17			Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18			*/
19
20			#include "config.h"
21
22			#include <cstdio>
23			#include <cstdlib>
24			#include <cstring>
25
26			#include <errno.h>
27			#include <netdb.h>
28			#include <sys/stat.h>
29			#include <sys/types.h>
30			#include <unistd.h>
31
32	pcg	1.17	#include "netcompat.h"
33	pcg	1.5
34	pcg	1.1	#include <openssl/err.h>
35			#include <openssl/pem.h>
36			#include <openssl/rsa.h>
37			#include <openssl/rand.h>
38
39			#include "gettext.h"
40
41			#include "conf.h"
42			#include "slog.h"
43			#include "util.h"
44
45			char *confbase;
46			char *thisnode;
47			char *identname;
48			char *pidfilename;
49
50			struct configuration conf;
51
52	pcg	1.7	u8 best_protocol (u8 protset)
53			{
54	pcg	1.13	if (protset & PROT_IPv4 ) return PROT_IPv4;
55			if (protset & PROT_ICMPv4) return PROT_ICMPv4;
56			if (protset & PROT_UDPv4 ) return PROT_UDPv4;
57			if (protset & PROT_TCPv4 ) return PROT_TCPv4;
58	pcg	1.7
59	pcg	1.9	return 0;
60	pcg	1.7	}
61
62			const char *strprotocol (u8 protocol)
63			{
64	pcg	1.13	if (protocol & PROT_IPv4 ) return "rawip";
65			if (protocol & PROT_ICMPv4) return "icmp";
66			if (protocol & PROT_UDPv4 ) return "udp";
67			if (protocol & PROT_TCPv4 ) return "tcp";
68	pcg	1.7
69			return "<unknown>";
70			}
71
72	pcg	1.12	void
73			conf_node::print ()
74	pcg	1.1	{
75	pcg	1.12	printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n",
76			id,
77			id >> 8, id & 0xff,
78			compress ? 'Y' : 'N',
79			connectmode == C_ONDEMAND ? "ondemand" :
80			connectmode == C_NEVER ? "never" :
81			connectmode == C_ALWAYS ? "always" : "",
82			nodename,
83			hostname ? hostname : "",
84			hostname ? ":" : "",
85			hostname ? udp_port : 0
86			);
87	pcg	1.1	}
88
89	pcg	1.12	conf_node::~conf_node ()
90	pcg	1.1	{
91	pcg	1.12	if (rsa_key)
92			RSA_free (rsa_key);
93
94			free (nodename);
95			free (hostname);
96	pcg	1.1	}
97
98			void configuration::init ()
99			{
100			memset (this, 0, sizeof (*this));
101
102	pcg	1.19	mtu = DEFAULT_MTU;
103	pcg	1.1	rekey = DEFAULT_REKEY;
104			keepalive = DEFAULT_KEEPALIVE;
105	pcg	1.2	llevel = L_INFO;
106	pcg	1.5	ip_proto = IPPROTO_GRE;
107	pcg	1.16	#if ENABLE_ICMP
108	pcg	1.13	icmp_type = ICMP_ECHOREPLY;
109	pcg	1.16	#endif
110	pcg	1.1
111	pcg	1.5	default_node.udp_port = DEFAULT_UDPPORT;
112	pcg	1.8	default_node.tcp_port = DEFAULT_UDPPORT;
113	pcg	1.1	default_node.connectmode = conf_node::C_ALWAYS;
114			default_node.compress = true;
115	pcg	1.6	default_node.protocols = PROT_UDPv4;
116	pcg	1.1	}
117
118			void configuration::cleanup()
119			{
120			if (rsa_key)
121			RSA_free (rsa_key);
122
123	pcg	1.12	rsa_key = 0;
124	pcg	1.1
125	pcg	1.12	free (ifname); ifname = 0;
126			#if ENABLE_HTTP_PROXY
127			free (proxy_host); proxy_host = 0;
128			free (proxy_auth); proxy_auth = 0;
129			#endif
130	pcg	1.1	}
131
132			void
133			configuration::clear_config ()
134			{
135			for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
136			delete *i;
137
138			nodes.clear ();
139
140			cleanup ();
141			init ();
142			}
143
144	pcg	1.5	#define parse_bool(target,name,trueval,falseval) \
145			if (!strcmp (val, "yes")) target = trueval; \
146			else if (!strcmp (val, "no")) target = falseval; \
147			else if (!strcmp (val, "true")) target = trueval; \
148			else if (!strcmp (val, "false")) target = falseval; \
149			else if (!strcmp (val, "on")) target = trueval; \
150			else if (!strcmp (val, "off")) target = falseval; \
151			else \
152			slog (L_WARN, \
153			_("illegal value for '%s', only 'yes\|true\|on' or 'no\|false\|off' allowed, at '%s' line %d"), \
154			name, var, fname, lineno);
155
156	pcg	1.1	void configuration::read_config (bool need_keys)
157			{
158			char *fname;
159			FILE *f;
160
161			clear_config ();
162
163			asprintf (&fname, "%s/vped.conf", confbase);
164			f = fopen (fname, "r");
165
166			if (f)
167			{
168			char line[16384];
169			int lineno = 0;
170			char var, val;
171			conf_node *node = &default_node;
172
173			while (fgets (line, sizeof (line), f))
174			{
175			lineno++;
176
177			{
178			char *end = line + strlen (line);
179
180			while (*end < ' ' && end >= line)
181			end--;
182
183			*++end = 0;
184			}
185
186			char *tok = line;
187
188			retry:
189			var = strtok (tok, "\t =");
190			tok = 0;
191
192			if (!var \|\| !var[0])
193			continue; /* no tokens on this line */
194
195			if (var[0] == '#')
196			continue; /* comment: ignore */
197
198			val = strtok (NULL, "\t\n\r =");
199
200			if (!val \|\| val[0] == '#')
201			{
202			slog (L_WARN,
203			_("no value for variable `%s', at '%s' line %d"),
204			var, fname, lineno);
205			break;
206			}
207
208			if (!strcmp (var, "on"))
209			{
210			if (!::thisnode
211			\|\| (val[0] == '!' && strcmp (val + 1, ::thisnode))
212			\|\| !strcmp (val, ::thisnode))
213			goto retry;
214
215			continue;
216			}
217
218			// truly global
219			if (!strcmp (var, "loglevel"))
220			{
221			loglevel l = string_to_loglevel (val);
222
223			if (l != L_NONE)
224	pcg	1.2	llevel = l;
225	pcg	1.1	else
226			slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
227			}
228	pcg	1.5	else if (!strcmp (var, "ip-proto"))
229			ip_proto = atoi (val);
230	pcg	1.16	#if ENABLE_ICMP
231			//TODO: error message
232	pcg	1.13	else if (!strcmp (var, "icmp-type"))
233			icmp_type = atoi (val);
234	pcg	1.16	#endif
235	pcg	1.1
236			// per config
237			else if (!strcmp (var, "node"))
238			{
239			default_node.id++;
240
241			node = new conf_node (default_node);
242
243			nodes.push_back (node);
244
245			node->nodename = strdup (val);
246
247			{
248			char *fname;
249			FILE *f;
250
251			asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
252
253			f = fopen (fname, "r");
254			if (f)
255			{
256			node->rsa_key = RSA_new ();
257
258			if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
259			{
260			ERR_load_RSA_strings (); ERR_load_PEM_strings ();
261			slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
262			exit (1);
263			}
264
265			RSA_blinding_on (node->rsa_key, 0);
266
267			fclose (f);
268			}
269			else
270			{
271			slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
272
273			if (need_keys)
274			exit (1);
275			}
276
277			free (fname);
278			}
279
280			if (!::thisnode \|\| !strcmp (node->nodename, ::thisnode))
281			thisnode = node;
282			}
283			else if (!strcmp (var, "private-key"))
284			prikeyfile = strdup (val);
285			else if (!strcmp (var, "ifpersist"))
286			{
287	pcg	1.5	parse_bool (ifpersist, "ifpersist", true, false);
288	pcg	1.1	}
289			else if (!strcmp (var, "ifname"))
290			ifname = strdup (val);
291			else if (!strcmp (var, "rekey"))
292			rekey = atoi (val);
293			else if (!strcmp (var, "keepalive"))
294			keepalive = atoi (val);
295			else if (!strcmp (var, "mtu"))
296			mtu = atoi (val);
297			else if (!strcmp (var, "if-up"))
298			script_if_up = strdup (val);
299			else if (!strcmp (var, "node-up"))
300			script_node_up = strdup (val);
301			else if (!strcmp (var, "node-down"))
302			script_node_down = strdup (val);
303	pcg	1.12	#if ENABLE_HTTP_PROXY
304			else if (!strcmp (var, "http-proxy-host"))
305			proxy_host = strdup (val);
306			else if (!strcmp (var, "http-proxy-port"))
307			proxy_port = atoi (val);
308			else if (!strcmp (var, "http-proxy-auth"))
309			proxy_auth = (char )base64_encode ((const u8 )val, strlen (val));
310			#endif
311	pcg	1.1
312			/* node-specific, non-defaultable */
313			else if (node != &default_node && !strcmp (var, "hostname"))
314			{
315			free (node->hostname);
316			node->hostname = strdup (val);
317			}
318
319			/* node-specific, defaultable */
320	pcg	1.4	else if (!strcmp (var, "udp-port"))
321	pcg	1.5	node->udp_port = atoi (val);
322	pcg	1.8	else if (!strcmp (var, "tcp-port"))
323			node->tcp_port = atoi (val);
324	pcg	1.1	else if (!strcmp (var, "router-priority"))
325			node->routerprio = atoi (val);
326			else if (!strcmp (var, "connect"))
327			{
328			if (!strcmp (val, "ondemand"))
329			node->connectmode = conf_node::C_ONDEMAND;
330			else if (!strcmp (val, "never"))
331			node->connectmode = conf_node::C_NEVER;
332			else if (!strcmp (val, "always"))
333			node->connectmode = conf_node::C_ALWAYS;
334	pcg	1.4	else if (!strcmp (val, "disabled"))
335			node->connectmode = conf_node::C_DISABLED;
336	pcg	1.1	else
337			slog (L_WARN,
338	pcg	1.4	_("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
339	pcg	1.1	var, fname, lineno);
340			}
341	pcg	1.3	else if (!strcmp (var, "inherit-tos"))
342			{
343	pcg	1.5	parse_bool (node->inherit_tos, "inherit-tos", true, false);
344	pcg	1.3	}
345	pcg	1.1	else if (!strcmp (var, "compress"))
346			{
347	pcg	1.5	parse_bool (node->compress, "compress", true, false);
348			}
349			// all these bool options really really cost a lot of executable size!
350	pcg	1.8	else if (!strcmp (var, "enable-tcp"))
351			{
352	pcg	1.11	#if ENABLE_TCP
353	pcg	1.8	u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) \| v;
354	pcg	1.13	#endif
355			}
356			else if (!strcmp (var, "enable-icmp"))
357			{
358			#if ENABLE_ICMP
359			u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) \| v;
360	pcg	1.11	#endif
361	pcg	1.8	}
362	pcg	1.6	else if (!strcmp (var, "enable-udp"))
363	pcg	1.5	{
364	pcg	1.6	u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) \| v;
365	pcg	1.5	}
366	pcg	1.6	else if (!strcmp (var, "enable-rawip"))
367	pcg	1.5	{
368	pcg	1.6	u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) \| v;
369	pcg	1.1	}
370
371			// unknown or misplaced
372			else
373	pcg	1.12	slog (L_WARN,
374			_("unknown or misplaced variable `%s', at '%s' line %d"),
375			var, fname, lineno);
376	pcg	1.1	}
377
378			fclose (f);
379			}
380			else
381			{
382			slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
383			exit (1);
384			}
385
386			free (fname);
387
388			fname = config_filename (prikeyfile, "hostkey");
389
390			f = fopen (fname, "r");
391			if (f)
392			{
393			rsa_key = RSA_new ();
394
395			if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
396			{
397			ERR_load_RSA_strings (); ERR_load_PEM_strings ();
398			slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
399			exit (1);
400			}
401
402			RSA_blinding_on (rsa_key, 0);
403
404			fclose (f);
405			}
406			else
407			{
408			slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
409
410			if (need_keys)
411			exit (1);
412			}
413
414			free (fname);
415			}
416
417			char configuration::config_filename (const char name, const char *dflt)
418			{
419			char *fname;
420
421			asprintf (&fname, name ? name : dflt, ::thisnode);
422
423			if (!ABSOLUTE_PATH (fname))
424			{
425			char *rname = fname;
426			asprintf (&fname, "%s/%s", confbase, rname);
427			free (rname);
428			}
429
430			return fname;
431			}
432
433			void
434			configuration::print ()
435			{
436			printf (_("\nConfiguration\n\n"));
437			printf (_("# of nodes: %d\n"), nodes.size ());
438			printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
439			printf (_("MTU: %d\n"), mtu);
440			printf (_("rekeying interval: %d\n"), rekey);
441			printf (_("keepalive interval: %d\n"), keepalive);
442			printf (_("interface: %s\n"), ifname);
443			printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
444	pcg	1.15	printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
445	pcg	1.1	printf ("\n");
446
447			printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
448			_("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
449
450			for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
451			(*i)->print ();
452
453			printf ("\n");
454			}
455
456	pcg	1.12	configuration::configuration ()
457			{
458			init ();
459			}
460
461			configuration::~configuration ()
462	pcg	1.1	{
463	pcg	1.12	cleanup ();
464	pcg	1.1	}
465	pcg	1.12
466	pcg	1.1