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";
  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;

  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);

          // 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-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:	1.12
Committed:	Mon Apr 7 01:12:56 2003 UTC (21 years, 1 month ago) by pcg
Content type:	text/plain
Branch:	MAIN
Changes since 1.11:	+45 -26 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	pcg	1.10	if (protocol & PROT_TCPv4) return "tcp";
70	pcg	1.7
71			return "<unknown>";
72			}
73
74	pcg	1.12	void
75			conf_node::print ()
76	pcg	1.1	{
77	pcg	1.12	printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n",
78			id,
79			id >> 8, id & 0xff,
80			compress ? 'Y' : 'N',
81			connectmode == C_ONDEMAND ? "ondemand" :
82			connectmode == C_NEVER ? "never" :
83			connectmode == C_ALWAYS ? "always" : "",
84			nodename,
85			hostname ? hostname : "",
86			hostname ? ":" : "",
87			hostname ? udp_port : 0
88			);
89	pcg	1.1	}
90
91	pcg	1.12	conf_node::~conf_node ()
92	pcg	1.1	{
93	pcg	1.12	if (rsa_key)
94			RSA_free (rsa_key);
95
96			free (nodename);
97			free (hostname);
98	pcg	1.1	}
99
100			void configuration::init ()
101			{
102			memset (this, 0, sizeof (*this));
103
104			rekey = DEFAULT_REKEY;
105			keepalive = DEFAULT_KEEPALIVE;
106	pcg	1.2	llevel = L_INFO;
107	pcg	1.5	ip_proto = IPPROTO_GRE;
108	pcg	1.1
109	pcg	1.5	default_node.udp_port = DEFAULT_UDPPORT;
110	pcg	1.8	default_node.tcp_port = DEFAULT_UDPPORT;
111	pcg	1.1	default_node.connectmode = conf_node::C_ALWAYS;
112			default_node.compress = true;
113	pcg	1.6	default_node.protocols = PROT_UDPv4;
114	pcg	1.1	}
115
116			void configuration::cleanup()
117			{
118			if (rsa_key)
119			RSA_free (rsa_key);
120
121	pcg	1.12	rsa_key = 0;
122	pcg	1.1
123	pcg	1.12	free (ifname); ifname = 0;
124			#if ENABLE_HTTP_PROXY
125			free (proxy_host); proxy_host = 0;
126			free (proxy_auth); proxy_auth = 0;
127			#endif
128	pcg	1.1	}
129
130			void
131			configuration::clear_config ()
132			{
133			for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
134			delete *i;
135
136			nodes.clear ();
137
138			cleanup ();
139			init ();
140			}
141
142	pcg	1.5	#define parse_bool(target,name,trueval,falseval) \
143			if (!strcmp (val, "yes")) target = trueval; \
144			else if (!strcmp (val, "no")) target = falseval; \
145			else if (!strcmp (val, "true")) target = trueval; \
146			else if (!strcmp (val, "false")) target = falseval; \
147			else if (!strcmp (val, "on")) target = trueval; \
148			else if (!strcmp (val, "off")) target = falseval; \
149			else \
150			slog (L_WARN, \
151			_("illegal value for '%s', only 'yes\|true\|on' or 'no\|false\|off' allowed, at '%s' line %d"), \
152			name, var, fname, lineno);
153
154	pcg	1.1	void configuration::read_config (bool need_keys)
155			{
156			char *fname;
157			FILE *f;
158
159			clear_config ();
160
161			asprintf (&fname, "%s/vped.conf", confbase);
162			f = fopen (fname, "r");
163
164			if (f)
165			{
166			char line[16384];
167			int lineno = 0;
168			char var, val;
169			conf_node *node = &default_node;
170
171			while (fgets (line, sizeof (line), f))
172			{
173			lineno++;
174
175			{
176			char *end = line + strlen (line);
177
178			while (*end < ' ' && end >= line)
179			end--;
180
181			*++end = 0;
182			}
183
184			char *tok = line;
185
186			retry:
187			var = strtok (tok, "\t =");
188			tok = 0;
189
190			if (!var \|\| !var[0])
191			continue; /* no tokens on this line */
192
193			if (var[0] == '#')
194			continue; /* comment: ignore */
195
196			val = strtok (NULL, "\t\n\r =");
197
198			if (!val \|\| val[0] == '#')
199			{
200			slog (L_WARN,
201			_("no value for variable `%s', at '%s' line %d"),
202			var, fname, lineno);
203			break;
204			}
205
206			if (!strcmp (var, "on"))
207			{
208			if (!::thisnode
209			\|\| (val[0] == '!' && strcmp (val + 1, ::thisnode))
210			\|\| !strcmp (val, ::thisnode))
211			goto retry;
212
213			continue;
214			}
215
216			// truly global
217			if (!strcmp (var, "loglevel"))
218			{
219			loglevel l = string_to_loglevel (val);
220
221			if (l != L_NONE)
222	pcg	1.2	llevel = l;
223	pcg	1.1	else
224			slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
225			}
226	pcg	1.5	else if (!strcmp (var, "ip-proto"))
227			ip_proto = atoi (val);
228	pcg	1.1
229			// per config
230			else if (!strcmp (var, "node"))
231			{
232			default_node.id++;
233
234			node = new conf_node (default_node);
235
236			nodes.push_back (node);
237
238			node->nodename = strdup (val);
239
240			{
241			char *fname;
242			FILE *f;
243
244			asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
245
246			f = fopen (fname, "r");
247			if (f)
248			{
249			node->rsa_key = RSA_new ();
250
251			if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
252			{
253			ERR_load_RSA_strings (); ERR_load_PEM_strings ();
254			slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
255			exit (1);
256			}
257
258			RSA_blinding_on (node->rsa_key, 0);
259
260			fclose (f);
261			}
262			else
263			{
264			slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
265
266			if (need_keys)
267			exit (1);
268			}
269
270			free (fname);
271			}
272
273			if (!::thisnode \|\| !strcmp (node->nodename, ::thisnode))
274			thisnode = node;
275			}
276			else if (!strcmp (var, "private-key"))
277			prikeyfile = strdup (val);
278			else if (!strcmp (var, "ifpersist"))
279			{
280	pcg	1.5	parse_bool (ifpersist, "ifpersist", true, false);
281	pcg	1.1	}
282			else if (!strcmp (var, "ifname"))
283			ifname = strdup (val);
284			else if (!strcmp (var, "rekey"))
285			rekey = atoi (val);
286			else if (!strcmp (var, "keepalive"))
287			keepalive = atoi (val);
288			else if (!strcmp (var, "mtu"))
289			mtu = atoi (val);
290			else if (!strcmp (var, "if-up"))
291			script_if_up = strdup (val);
292			else if (!strcmp (var, "node-up"))
293			script_node_up = strdup (val);
294			else if (!strcmp (var, "node-down"))
295			script_node_down = strdup (val);
296	pcg	1.12	#if ENABLE_HTTP_PROXY
297			else if (!strcmp (var, "http-proxy-host"))
298			proxy_host = strdup (val);
299			else if (!strcmp (var, "http-proxy-port"))
300			proxy_port = atoi (val);
301			else if (!strcmp (var, "http-proxy-auth"))
302			proxy_auth = (char )base64_encode ((const u8 )val, strlen (val));
303			#endif
304	pcg	1.1
305			/* node-specific, non-defaultable */
306			else if (node != &default_node && !strcmp (var, "hostname"))
307			{
308			free (node->hostname);
309			node->hostname = strdup (val);
310			}
311
312			/* node-specific, defaultable */
313	pcg	1.4	else if (!strcmp (var, "udp-port"))
314	pcg	1.5	node->udp_port = atoi (val);
315	pcg	1.8	else if (!strcmp (var, "tcp-port"))
316			node->tcp_port = atoi (val);
317	pcg	1.1	else if (!strcmp (var, "router-priority"))
318			node->routerprio = atoi (val);
319			else if (!strcmp (var, "connect"))
320			{
321			if (!strcmp (val, "ondemand"))
322			node->connectmode = conf_node::C_ONDEMAND;
323			else if (!strcmp (val, "never"))
324			node->connectmode = conf_node::C_NEVER;
325			else if (!strcmp (val, "always"))
326			node->connectmode = conf_node::C_ALWAYS;
327	pcg	1.4	else if (!strcmp (val, "disabled"))
328			node->connectmode = conf_node::C_DISABLED;
329	pcg	1.1	else
330			slog (L_WARN,
331	pcg	1.4	_("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
332	pcg	1.1	var, fname, lineno);
333			}
334	pcg	1.3	else if (!strcmp (var, "inherit-tos"))
335			{
336	pcg	1.5	parse_bool (node->inherit_tos, "inherit-tos", true, false);
337	pcg	1.3	}
338	pcg	1.1	else if (!strcmp (var, "compress"))
339			{
340	pcg	1.5	parse_bool (node->compress, "compress", true, false);
341			}
342			// all these bool options really really cost a lot of executable size!
343	pcg	1.8	else if (!strcmp (var, "enable-tcp"))
344			{
345	pcg	1.11	#if ENABLE_TCP
346	pcg	1.8	u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) \| v;
347	pcg	1.11	#endif
348	pcg	1.8	}
349	pcg	1.6	else if (!strcmp (var, "enable-udp"))
350	pcg	1.5	{
351	pcg	1.6	u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) \| v;
352	pcg	1.5	}
353	pcg	1.6	else if (!strcmp (var, "enable-rawip"))
354	pcg	1.5	{
355	pcg	1.6	u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) \| v;
356	pcg	1.1	}
357
358			// unknown or misplaced
359			else
360	pcg	1.12	slog (L_WARN,
361			_("unknown or misplaced variable `%s', at '%s' line %d"),
362			var, fname, lineno);
363	pcg	1.1	}
364
365			fclose (f);
366			}
367			else
368			{
369			slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
370			exit (1);
371			}
372
373			free (fname);
374
375			fname = config_filename (prikeyfile, "hostkey");
376
377			f = fopen (fname, "r");
378			if (f)
379			{
380			rsa_key = RSA_new ();
381
382			if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
383			{
384			ERR_load_RSA_strings (); ERR_load_PEM_strings ();
385			slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
386			exit (1);
387			}
388
389			RSA_blinding_on (rsa_key, 0);
390
391			fclose (f);
392			}
393			else
394			{
395			slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
396
397			if (need_keys)
398			exit (1);
399			}
400
401			free (fname);
402			}
403
404			char configuration::config_filename (const char name, const char *dflt)
405			{
406			char *fname;
407
408			asprintf (&fname, name ? name : dflt, ::thisnode);
409
410			if (!ABSOLUTE_PATH (fname))
411			{
412			char *rname = fname;
413			asprintf (&fname, "%s/%s", confbase, rname);
414			free (rname);
415			}
416
417			return fname;
418			}
419
420			void
421			configuration::print ()
422			{
423			printf (_("\nConfiguration\n\n"));
424			printf (_("# of nodes: %d\n"), nodes.size ());
425			printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
426			printf (_("MTU: %d\n"), mtu);
427			printf (_("rekeying interval: %d\n"), rekey);
428			printf (_("keepalive interval: %d\n"), keepalive);
429			printf (_("interface: %s\n"), ifname);
430			printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
431			printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1);
432			printf ("\n");
433
434			printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
435			_("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
436
437			for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
438			(*i)->print ();
439
440			printf ("\n");
441			}
442
443	pcg	1.12	configuration::configuration ()
444			{
445			init ();
446			}
447
448			configuration::~configuration ()
449	pcg	1.1	{
450	pcg	1.12	cleanup ();
451	pcg	1.1	}
452	pcg	1.12
453	pcg	1.1