gvpe/src/conf.C

/*
    conf.c -- configuration code
    Copyright (C) 2003-2004 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);
          else if (!strcmp (var, "icmp-type"))
            {
#if ENABLE_ICMP
              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);
          else if (!strcmp (var, "http-proxy-host"))
            {
#if ENABLE_HTTP_PROXY
              proxy_host = strdup (val);
#endif
            }
          else if (!strcmp (var, "http-proxy-port"))
            {
#if ENABLE_HTTP_PROXY
              proxy_port = atoi (val);
#endif
            }
          else if (!strcmp (var, "http-proxy-auth"))
            {
#if ENABLE_HTTP_PROXY
              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:	1.21
Committed:	Sat Jan 17 01:18:36 2004 UTC (20 years, 4 months ago) by pcg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	VPE_1_4
Changes since 1.20:	+1 -1 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	pcg	1.1	/*
2			conf.c -- configuration code
3	pcg	1.21	Copyright (C) 2003-2004 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	1.20	else if (!strcmp (var, "icmp-type"))
231			{
232	pcg	1.16	#if ENABLE_ICMP
233	pcg	1.20	icmp_type = atoi (val);
234	pcg	1.16	#endif
235	pcg	1.20	}
236	pcg	1.1
237			// per config
238			else if (!strcmp (var, "node"))
239			{
240			default_node.id++;
241
242			node = new conf_node (default_node);
243
244			nodes.push_back (node);
245
246			node->nodename = strdup (val);
247
248			{
249			char *fname;
250			FILE *f;
251
252			asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
253
254			f = fopen (fname, "r");
255			if (f)
256			{
257			node->rsa_key = RSA_new ();
258
259			if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
260			{
261			ERR_load_RSA_strings (); ERR_load_PEM_strings ();
262			slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
263			exit (1);
264			}
265
266			RSA_blinding_on (node->rsa_key, 0);
267
268			fclose (f);
269			}
270			else
271			{
272			slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
273
274			if (need_keys)
275			exit (1);
276			}
277
278			free (fname);
279			}
280
281			if (!::thisnode \|\| !strcmp (node->nodename, ::thisnode))
282			thisnode = node;
283			}
284			else if (!strcmp (var, "private-key"))
285			prikeyfile = strdup (val);
286			else if (!strcmp (var, "ifpersist"))
287			{
288	pcg	1.5	parse_bool (ifpersist, "ifpersist", true, false);
289	pcg	1.1	}
290			else if (!strcmp (var, "ifname"))
291			ifname = strdup (val);
292			else if (!strcmp (var, "rekey"))
293			rekey = atoi (val);
294			else if (!strcmp (var, "keepalive"))
295			keepalive = atoi (val);
296			else if (!strcmp (var, "mtu"))
297			mtu = atoi (val);
298			else if (!strcmp (var, "if-up"))
299			script_if_up = strdup (val);
300			else if (!strcmp (var, "node-up"))
301			script_node_up = strdup (val);
302			else if (!strcmp (var, "node-down"))
303			script_node_down = strdup (val);
304	pcg	1.20	else if (!strcmp (var, "http-proxy-host"))
305			{
306	pcg	1.12	#if ENABLE_HTTP_PROXY
307	pcg	1.20	proxy_host = strdup (val);
308			#endif
309			}
310	pcg	1.12	else if (!strcmp (var, "http-proxy-port"))
311	pcg	1.20	{
312			#if ENABLE_HTTP_PROXY
313			proxy_port = atoi (val);
314			#endif
315			}
316	pcg	1.12	else if (!strcmp (var, "http-proxy-auth"))
317	pcg	1.20	{
318			#if ENABLE_HTTP_PROXY
319			proxy_auth = (char )base64_encode ((const u8 )val, strlen (val));
320	pcg	1.12	#endif
321	pcg	1.20	}
322	pcg	1.1
323			/* node-specific, non-defaultable */
324			else if (node != &default_node && !strcmp (var, "hostname"))
325			{
326			free (node->hostname);
327			node->hostname = strdup (val);
328			}
329
330			/* node-specific, defaultable */
331	pcg	1.4	else if (!strcmp (var, "udp-port"))
332	pcg	1.5	node->udp_port = atoi (val);
333	pcg	1.8	else if (!strcmp (var, "tcp-port"))
334			node->tcp_port = atoi (val);
335	pcg	1.1	else if (!strcmp (var, "router-priority"))
336			node->routerprio = atoi (val);
337			else if (!strcmp (var, "connect"))
338			{
339			if (!strcmp (val, "ondemand"))
340			node->connectmode = conf_node::C_ONDEMAND;
341			else if (!strcmp (val, "never"))
342			node->connectmode = conf_node::C_NEVER;
343			else if (!strcmp (val, "always"))
344			node->connectmode = conf_node::C_ALWAYS;
345	pcg	1.4	else if (!strcmp (val, "disabled"))
346			node->connectmode = conf_node::C_DISABLED;
347	pcg	1.1	else
348			slog (L_WARN,
349	pcg	1.4	_("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
350	pcg	1.1	var, fname, lineno);
351			}
352	pcg	1.3	else if (!strcmp (var, "inherit-tos"))
353			{
354	pcg	1.5	parse_bool (node->inherit_tos, "inherit-tos", true, false);
355	pcg	1.3	}
356	pcg	1.1	else if (!strcmp (var, "compress"))
357			{
358	pcg	1.5	parse_bool (node->compress, "compress", true, false);
359			}
360			// all these bool options really really cost a lot of executable size!
361	pcg	1.8	else if (!strcmp (var, "enable-tcp"))
362			{
363	pcg	1.11	#if ENABLE_TCP
364	pcg	1.8	u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) \| v;
365	pcg	1.13	#endif
366			}
367			else if (!strcmp (var, "enable-icmp"))
368			{
369			#if ENABLE_ICMP
370			u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) \| v;
371	pcg	1.11	#endif
372	pcg	1.8	}
373	pcg	1.6	else if (!strcmp (var, "enable-udp"))
374	pcg	1.5	{
375	pcg	1.6	u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) \| v;
376	pcg	1.5	}
377	pcg	1.6	else if (!strcmp (var, "enable-rawip"))
378	pcg	1.5	{
379	pcg	1.6	u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) \| v;
380	pcg	1.1	}
381
382			// unknown or misplaced
383			else
384	pcg	1.12	slog (L_WARN,
385			_("unknown or misplaced variable `%s', at '%s' line %d"),
386			var, fname, lineno);
387	pcg	1.1	}
388
389			fclose (f);
390			}
391			else
392			{
393			slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
394			exit (1);
395			}
396
397			free (fname);
398
399			fname = config_filename (prikeyfile, "hostkey");
400
401			f = fopen (fname, "r");
402			if (f)
403			{
404			rsa_key = RSA_new ();
405
406			if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
407			{
408			ERR_load_RSA_strings (); ERR_load_PEM_strings ();
409			slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
410			exit (1);
411			}
412
413			RSA_blinding_on (rsa_key, 0);
414
415			fclose (f);
416			}
417			else
418			{
419			slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
420
421			if (need_keys)
422			exit (1);
423			}
424
425			free (fname);
426			}
427
428			char configuration::config_filename (const char name, const char *dflt)
429			{
430			char *fname;
431
432			asprintf (&fname, name ? name : dflt, ::thisnode);
433
434			if (!ABSOLUTE_PATH (fname))
435			{
436			char *rname = fname;
437			asprintf (&fname, "%s/%s", confbase, rname);
438			free (rname);
439			}
440
441			return fname;
442			}
443
444			void
445			configuration::print ()
446			{
447			printf (_("\nConfiguration\n\n"));
448			printf (_("# of nodes: %d\n"), nodes.size ());
449			printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
450			printf (_("MTU: %d\n"), mtu);
451			printf (_("rekeying interval: %d\n"), rekey);
452			printf (_("keepalive interval: %d\n"), keepalive);
453			printf (_("interface: %s\n"), ifname);
454			printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
455	pcg	1.15	printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
456	pcg	1.1	printf ("\n");
457
458			printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
459			_("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
460
461			for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
462			(*i)->print ();
463
464			printf ("\n");
465			}
466
467	pcg	1.12	configuration::configuration ()
468			{
469			init ();
470			}
471
472			configuration::~configuration ()
473	pcg	1.1	{
474	pcg	1.12	cleanup ();
475	pcg	1.1	}
476	pcg	1.12
477	pcg	1.1