[ViewVC] Diff of: cvs/gvpe/src/conf.C

Comparing gvpe/src/conf.C (file contents):
Revision 1.20 by pcg, Thu Oct 16 21:57:54 2003 UTC vs.
Revision 1.61 by root, Tue Jul 16 16:44:36 2013 UTC

…		…
1	/*	1	/*
2	conf.c -- configuration code	2	conf.C -- configuration code
3	Copyright (C) 2003 Marc Lehmann <pcg@goof.com>	3	Copyright (C) 2003-2008,2011 Marc Lehmann <gvpe@schmorp.de>
4		4
		5	This file is part of GVPE.
		6
5	This program is free software; you can redistribute it and/or modify	7	GVPE is free software; you can redistribute it and/or modify it
6	it under the terms of the GNU General Public License as published by	8	under the terms of the GNU General Public License as published by the
7	the Free Software Foundation; either version 2 of the License, or	9	Free Software Foundation; either version 3 of the License, or (at your
8	(at your option) any later version.	10	option) any later version.
9		11
10	This program is distributed in the hope that it will be useful,	12	This program is distributed in the hope that it will be useful, but
11	but WITHOUT ANY WARRANTY; without even the implied warranty of	13	WITHOUT ANY WARRANTY; without even the implied warranty of
12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
13	GNU General Public License for more details.	15	Public License for more details.
14		16
15	You should have received a copy of the GNU General Public License	17	You should have received a copy of the GNU General Public License along
16	along with this program; if not, write to the Free Software	18	with this program; if not, see <http://www.gnu.org/licenses/>.
17	Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA	19
		20	Additional permission under GNU GPL version 3 section 7
		21
		22	If you modify this Program, or any covered work, by linking or
		23	combining it with the OpenSSL project's OpenSSL library (or a modified
		24	version of that library), containing parts covered by the terms of the
		25	OpenSSL or SSLeay licenses, the licensors of this Program grant you
		26	additional permission to convey the resulting work. Corresponding
		27	Source for a non-source form of such a combination shall include the
		28	source code for the parts of OpenSSL used as well as that of the
		29	covered work.
18	*/	30	*/
19		31
20	#include "config.h"	32	#include "config.h"
21		33
22	#include <cstdio>	34	#include <cstdio>
26	#include <errno.h>	38	#include <errno.h>
27	#include <netdb.h>	39	#include <netdb.h>
28	#include <sys/stat.h>	40	#include <sys/stat.h>
29	#include <sys/types.h>	41	#include <sys/types.h>
30	#include <unistd.h>	42	#include <unistd.h>
		43	#include <pwd.h>
31		44
32	#include "netcompat.h"	45	#include "netcompat.h"
33		46
34	#include <openssl/err.h>	47	#include <openssl/err.h>
35	#include <openssl/pem.h>	48	#include <openssl/pem.h>
36	#include <openssl/rsa.h>	49	#include <openssl/rsa.h>
37	#include <openssl/rand.h>	50	#include <openssl/rand.h>
38		51	#include <openssl/bn.h>
39	#include "gettext.h"
40		52
41	#include "conf.h"	53	#include "conf.h"
42	#include "slog.h"	54	#include "slog.h"
43	#include "util.h"	55	#include "util.h"
44		56
45	char *confbase;	57	char *confbase;
46	char *thisnode;	58	char *thisnode;
47	char *identname;	59	char *identname;
48	char *pidfilename;
49		60
50	struct configuration conf;	61	struct configuration conf;
51		62
		63	u8
52	u8 best_protocol (u8 protset)	64	best_protocol (u8 protset)
53	{	65	{
54	if (protset & PROT_IPv4 ) return PROT_IPv4;	66	if (protset & PROT_IPv4 ) return PROT_IPv4;
55	if (protset & PROT_ICMPv4) return PROT_ICMPv4;	67	if (protset & PROT_ICMPv4) return PROT_ICMPv4;
56	if (protset & PROT_UDPv4 ) return PROT_UDPv4;	68	if (protset & PROT_UDPv4 ) return PROT_UDPv4;
57	if (protset & PROT_TCPv4 ) return PROT_TCPv4;	69	if (protset & PROT_TCPv4 ) return PROT_TCPv4;
		70	if (protset & PROT_DNSv4 ) return PROT_DNSv4;
58		71
59	return 0;	72	return 0;
60	}	73	}
61		74
		75	const char *
62	const char *strprotocol (u8 protocol)	76	strprotocol (u8 protocol)
63	{	77	{
64	if (protocol & PROT_IPv4 ) return "rawip";	78	if (protocol & PROT_IPv4 ) return "rawip";
65	if (protocol & PROT_ICMPv4) return "icmp";	79	if (protocol & PROT_ICMPv4) return "icmp";
66	if (protocol & PROT_UDPv4 ) return "udp";	80	if (protocol & PROT_UDPv4 ) return "udp";
67	if (protocol & PROT_TCPv4 ) return "tcp";	81	if (protocol & PROT_TCPv4 ) return "tcp";
		82	if (protocol & PROT_DNSv4 ) return "dns";
68		83
69	return "<unknown>";	84	return "<unknown>";
70	}	85	}
71		86
72	void	87	static bool
73	conf_node::print ()	88	match_list (const vector<const char > &list, const char str)
74	{	89	{
75	printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n",	90	for (vector<const char *>::const_iterator i = list.end (); i-- > list.begin (); )
76	id,	91	if ((i)[0] == '' && !(*i)[1])
77	id >> 8, id & 0xff,	92	return true;
78	compress ? 'Y' : 'N',	93	else if (!strcmp (*i, str))
79	connectmode == C_ONDEMAND ? "ondemand" :	94	return true;
80	connectmode == C_NEVER ? "never" :	95
81	connectmode == C_ALWAYS ? "always" : "",	96	return false;
82	nodename,	97	}
83	hostname ? hostname : "",	98
84	hostname ? ":" : "",	99	bool
85	hostname ? udp_port : 0	100	conf_node::may_direct (struct conf_node *other)
86	);	101	{
		102	if (match_list (allow_direct, other->nodename))
		103	return true;
		104
		105	if (match_list (deny_direct, other->nodename))
		106	return false;
		107
		108	return true;
87	}	109	}
88		110
89	conf_node::~conf_node ()	111	conf_node::~conf_node ()
90	{	112	{
		113	#if 0
		114	// does not work, because string pointers etc. are shared
		115	// is not called, however
91	if (rsa_key)	116	if (rsa_key)
92	RSA_free (rsa_key);	117	RSA_free (rsa_key);
93		118
94	free (nodename);	119	free (nodename);
95	free (hostname);	120	free (hostname);
		121	free (if_up_data);
		122	#if ENABLE_DNS
		123	free (domain);
		124	free (dns_hostname);
		125	#endif
		126	#endif
96	}	127	}
97		128
		129	void
98	void configuration::init ()	130	configuration::init ()
99	{	131	{
100	memset (this, 0, sizeof (*this));	132	memset (this, 0, sizeof (*this));
101		133
102	mtu = DEFAULT_MTU;	134	mtu = DEFAULT_MTU;
		135	nfmark = 0;
103	rekey = DEFAULT_REKEY;	136	rekey = DEFAULT_REKEY;
104	keepalive = DEFAULT_KEEPALIVE;	137	keepalive = DEFAULT_KEEPALIVE;
105	llevel = L_INFO;	138	llevel = L_INFO;
106	ip_proto = IPPROTO_GRE;	139	ip_proto = IPPROTO_GRE;
107	#if ENABLE_ICMP	140	#if ENABLE_ICMP
108	icmp_type = ICMP_ECHOREPLY;	141	icmp_type = ICMP_ECHOREPLY;
109	#endif	142	#endif
110		143
111	default_node.udp_port = DEFAULT_UDPPORT;	144	default_node.udp_port = DEFAULT_UDPPORT;
112	default_node.tcp_port = DEFAULT_UDPPORT;	145	default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
113	default_node.connectmode = conf_node::C_ALWAYS;	146	default_node.connectmode = conf_node::C_ALWAYS;
114	default_node.compress = true;	147	default_node.compress = true;
115	default_node.protocols = PROT_UDPv4;	148	default_node.protocols = 0;
116	}	149	default_node.max_retry = DEFAULT_MAX_RETRY;
		150	default_node.max_ttl = DEFAULT_MAX_TTL;
		151	default_node.max_queue = DEFAULT_MAX_QUEUE;
		152	default_node.if_up_data = strdup ("");
117		153
		154	#if ENABLE_DNS
		155	default_node.dns_port = 0; // default is 0 == client
		156
		157	dns_case_preserving = true;
		158	dns_forw_host = strdup ("127.0.0.1");
		159	dns_forw_port = 53;
		160	dns_timeout_factor = DEFAULT_DNS_TIMEOUT_FACTOR;
		161	dns_send_interval = DEFAULT_DNS_SEND_INTERVAL;
		162	dns_overlap_factor = DEFAULT_DNS_OVERLAP_FACTOR;
		163	dns_max_outstanding = DEFAULT_DNS_MAX_OUTSTANDING;
		164	#endif
		165
		166	pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
		167	seed_dev = strdup ("/dev/urandom");
		168	reseed = DEFAULT_RESEED;
		169	}
		170
		171	void
118	void configuration::cleanup()	172	configuration::cleanup ()
119	{	173	{
120	if (rsa_key)	174	if (rsa_key)
121	RSA_free (rsa_key);	175	RSA_free (rsa_key);
122		176
123	rsa_key = 0;	177	rsa_key = 0;
124		178
		179	free (seed_dev); seed_dev = 0;
125	free (ifname); ifname = 0;	180	free (pidfilename); pidfilename = 0;
		181	free (ifname); ifname = 0;
126	#if ENABLE_HTTP_PROXY	182	#if ENABLE_HTTP_PROXY
127	free (proxy_host); proxy_host = 0;	183	free (proxy_host); proxy_host = 0;
128	free (proxy_auth); proxy_auth = 0;	184	free (proxy_auth); proxy_auth = 0;
129	#endif	185	#endif
		186	#if ENABLE_DNS
		187	free (dns_forw_host); dns_forw_host = 0;
		188	#endif
		189	free (change_root); change_root = 0;
		190	free (script_if_up); script_if_up = 0;
		191	free (script_node_up); script_node_up = 0;
		192	free (script_node_change); script_node_change = 0;
		193	free (script_node_down); script_node_down = 0;
130	}	194	}
131		195
132	void	196	void
133	configuration::clear_config ()	197	configuration::clear ()
134	{	198	{
135	for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)	199	for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
136	delete *i;	200	delete *i;
137		201
138	nodes.clear ();	202	nodes.clear ();
139		203
140	cleanup ();	204	cleanup ();
141	init ();	205	init ();
142	}	206	}
143		207
		208	//static bool
		209	//is_true (const char *name)
		210	//{
		211	//re
		212	//}
		213
144	#define parse_bool(target,name,trueval,falseval) \	214	#define parse_bool(target,name,trueval,falseval) do { \
145	if (!strcmp (val, "yes")) target = trueval; \	215	if (!strcmp (val, "yes")) target = trueval; \
146	else if (!strcmp (val, "no")) target = falseval; \	216	else if (!strcmp (val, "no")) target = falseval; \
147	else if (!strcmp (val, "true")) target = trueval; \	217	else if (!strcmp (val, "true")) target = trueval; \
148	else if (!strcmp (val, "false")) target = falseval; \	218	else if (!strcmp (val, "false")) target = falseval; \
149	else if (!strcmp (val, "on")) target = trueval; \	219	else if (!strcmp (val, "on")) target = trueval; \
150	else if (!strcmp (val, "off")) target = falseval; \	220	else if (!strcmp (val, "off")) target = falseval; \
151	else \	221	else \
152	slog (L_WARN, \
153	_("illegal value for '%s', only 'yes\|true\|on' or 'no\|false\|off' allowed, at '%s' line %d"), \	222	return _("illegal boolean value, only 'yes\|true\|on' or 'no\|false\|off' allowed, ignored"); \
154	name, var, fname, lineno);	223	} while (0)
155		224
156	void configuration::read_config (bool need_keys)	225	const char *
		226	configuration_parser::parse_line (char *line)
157	{	227	{
		228	{
		229	char *end = line + strlen (line);
		230
		231	while (*end < ' ' && end >= line)
		232	end--;
		233
		234	*++end = 0;
		235	}
		236
		237	char *tok = line;
		238	const char *var = strtok (tok, "\t =");
		239	tok = 0;
		240
		241	if (!var \|\| !var[0])
		242	return 0; /* no tokens on this line */
		243
		244	if (var[0] == '#')
		245	return 0; /* comment: ignore */
		246
		247	char *val = strtok (NULL, "\t\n\r =");
		248
		249	if (!val \|\| val[0] == '#')
		250	return _("no value given for variable, ignored");
		251
		252	else if (!strcmp (var, "on"))
		253	{
		254	if (::thisnode
		255	&& ((val[0] == '!' && strcmp (val + 1, ::thisnode))
		256	\|\| !strcmp (val, ::thisnode)))
		257	return parse_line (strtok (NULL, "\n\r"));
		258	}
		259
		260	else if (!strcmp (var, "include"))
		261	{
		262	char *fname = conf.config_filename (val);
		263	parse_file (fname);
		264	free (fname);
		265	}
		266
		267	// truly global
		268	else if (!strcmp (var, "loglevel"))
		269	{
		270	loglevel l = string_to_loglevel (val);
		271
		272	if (l == L_NONE)
		273	return _("unknown loglevel, ignored");
		274	}
		275	else if (!strcmp (var, "ip-proto"))
		276	conf.ip_proto = atoi (val);
		277	else if (!strcmp (var, "icmp-type"))
		278	{
		279	#if ENABLE_ICMP
		280	conf.icmp_type = atoi (val);
		281	#endif
		282	}
		283	else if (!strcmp (var, "chuser"))
		284	{
		285	struct passwd *pw = getpwnam (val);
		286	if (!pw)
		287	return _("user specified for chuser not found");
		288
		289	conf.change_uid = pw->pw_uid;
		290	conf.change_gid = pw->pw_gid;
		291	}
		292	else if (!strcmp (var, "chuid"))
		293	conf.change_uid = atoi (val);
		294	else if (!strcmp (var, "chgid"))
		295	conf.change_gid = atoi (val);
		296	else if (!strcmp (var, "chroot"))
		297	free (conf.change_root), conf.change_root = strdup (val);
		298
		299	// per node
		300	else if (!strcmp (var, "node"))
		301	{
		302	parse_argv ();
		303
		304	conf.default_node.id++;
		305	node = new conf_node (conf.default_node);
		306	conf.nodes.push_back (node);
		307	node->nodename = strdup (val);
		308
		309	{
158	char *fname;	310	char *fname;
159	FILE *f;	311	FILE *f;
160		312
161	clear_config ();	313	asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
162		314
163	asprintf (&fname, "%s/vped.conf", confbase);
164	f = fopen (fname, "r");	315	f = fopen (fname, "r");
		316	if (f)
		317	{
		318	node->rsa_key = RSA_new ();
165		319
166	if (f)	320	if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
		321	{
		322	ERR_load_RSA_strings (); ERR_load_PEM_strings ();
		323	slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
		324	exit (EXIT_FAILURE);
		325	}
		326
		327	require (RSA_blinding_on (node->rsa_key, 0));
		328
		329	fclose (f);
		330	}
		331	else
		332	{
		333	slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
		334
		335	if (need_keys)
		336	exit (EXIT_FAILURE);
		337	}
		338
		339	free (fname);
		340	}
		341
		342	if (::thisnode && !strcmp (node->nodename, ::thisnode))
		343	conf.thisnode = node;
167	{	344	}
		345	else if (!strcmp (var, "private-key"))
		346	free (conf.prikeyfile), conf.prikeyfile = strdup (val);
		347	else if (!strcmp (var, "ifpersist"))
		348	parse_bool (conf.ifpersist, "ifpersist", true, false);
		349	else if (!strcmp (var, "ifname"))
		350	free (conf.ifname), conf.ifname = strdup (val);
		351	else if (!strcmp (var, "rekey"))
		352	conf.rekey = atoi (val);
		353	else if (!strcmp (var, "keepalive"))
		354	conf.keepalive = atoi (val);
		355	else if (!strcmp (var, "mtu"))
		356	conf.mtu = atoi (val);
		357	else if (!strcmp (var, "nfmark"))
		358	conf.nfmark = atoi (val);
		359	else if (!strcmp (var, "seed-device"))
		360	free (conf.seed_dev), conf.seed_dev = strdup (val);
		361	else if (!strcmp (var, "seed-interval"))
		362	conf.reseed = atoi (val);
		363	else if (!strcmp (var, "if-up"))
		364	free (conf.script_if_up), conf.script_if_up = strdup (val);
		365	else if (!strcmp (var, "node-up"))
		366	free (conf.script_node_up), conf.script_node_up = strdup (val);
		367	else if (!strcmp (var, "node-change"))
		368	free (conf.script_node_change), conf.script_node_change = strdup (val);
		369	else if (!strcmp (var, "node-down"))
		370	free (conf.script_node_down), conf.script_node_down = strdup (val);
		371	else if (!strcmp (var, "pid-file"))
		372	free (conf.pidfilename), conf.pidfilename = strdup (val);
		373	else if (!strcmp (var, "dns-forw-host"))
		374	{
		375	#if ENABLE_DNS
		376	free (conf.dns_forw_host), conf.dns_forw_host = strdup (val);
		377	#endif
		378	}
		379	else if (!strcmp (var, "dns-forw-port"))
		380	{
		381	#if ENABLE_DNS
		382	conf.dns_forw_port = atoi (val);
		383	#endif
		384	}
		385	else if (!strcmp (var, "dns-timeout-factor"))
		386	{
		387	#if ENABLE_DNS
		388	conf.dns_timeout_factor = atof (val);
		389	#endif
		390	}
		391	else if (!strcmp (var, "dns-send-interval"))
		392	{
		393	#if ENABLE_DNS
		394	conf.dns_send_interval = atoi (val);
		395	#endif
		396	}
		397	else if (!strcmp (var, "dns-overlap-factor"))
		398	{
		399	#if ENABLE_DNS
		400	conf.dns_overlap_factor = atof (val);
		401	#endif
		402	}
		403	else if (!strcmp (var, "dns-max-outstanding"))
		404	{
		405	#if ENABLE_DNS
		406	conf.dns_max_outstanding = atoi (val);
		407	#endif
		408	}
		409	else if (!strcmp (var, "dns-case-preserving"))
		410	{
		411	#if ENABLE_DNS
		412	parse_bool (conf.dns_case_preserving, "dns-case-preserving", true, false);
		413	#endif
		414	}
		415	else if (!strcmp (var, "http-proxy-host"))
		416	{
		417	#if ENABLE_HTTP_PROXY
		418	free (conf.proxy_host), conf.proxy_host = strdup (val);
		419	#endif
		420	}
		421	else if (!strcmp (var, "http-proxy-port"))
		422	{
		423	#if ENABLE_HTTP_PROXY
		424	conf.proxy_port = atoi (val);
		425	#endif
		426	}
		427	else if (!strcmp (var, "http-proxy-auth"))
		428	{
		429	#if ENABLE_HTTP_PROXY
		430	conf.proxy_auth = (char )base64_encode ((const u8 )val, strlen (val));
		431	#endif
		432	}
		433
		434	/* node-specific, non-defaultable */
		435	else if (node != &conf.default_node && !strcmp (var, "hostname"))
		436	free (node->hostname), node->hostname = strdup (val);
		437
		438	/* node-specific, defaultable */
		439	else if (!strcmp (var, "udp-port"))
		440	node->udp_port = atoi (val);
		441	else if (!strcmp (var, "tcp-port"))
		442	node->tcp_port = atoi (val);
		443	else if (!strcmp (var, "dns-hostname"))
		444	{
		445	#if ENABLE_DNS
		446	free (node->dns_hostname), node->dns_hostname = strdup (val);
		447	#endif
		448	}
		449	else if (!strcmp (var, "dns-port"))
		450	{
		451	#if ENABLE_DNS
		452	node->dns_port = atoi (val);
		453	#endif
		454	}
		455	else if (!strcmp (var, "dns-domain"))
		456	{
		457	#if ENABLE_DNS
		458	free (node->domain), node->domain = strdup (val);
		459	#endif
		460	}
		461	else if (!strcmp (var, "if-up-data"))
		462	free (node->if_up_data), node->if_up_data = strdup (val);
		463	else if (!strcmp (var, "router-priority"))
		464	node->routerprio = atoi (val);
		465	else if (!strcmp (var, "max-retry"))
		466	node->max_retry = atoi (val);
		467	else if (!strcmp (var, "connect"))
		468	{
		469	if (!strcmp (val, "ondemand"))
		470	node->connectmode = conf_node::C_ONDEMAND;
		471	else if (!strcmp (val, "never"))
		472	node->connectmode = conf_node::C_NEVER;
		473	else if (!strcmp (val, "always"))
		474	node->connectmode = conf_node::C_ALWAYS;
		475	else if (!strcmp (val, "disabled"))
		476	node->connectmode = conf_node::C_DISABLED;
		477	else
		478	return _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', ignored");
		479	}
		480	else if (!strcmp (var, "inherit-tos"))
		481	parse_bool (node->inherit_tos, "inherit-tos", true, false);
		482	else if (!strcmp (var, "compress"))
		483	parse_bool (node->compress, "compress", true, false);
		484	// all these bool options really really cost a lot of executable size!
		485	else if (!strcmp (var, "enable-tcp"))
		486	{
		487	#if ENABLE_TCP
		488	u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) \| v;
		489	#endif
		490	}
		491	else if (!strcmp (var, "enable-icmp"))
		492	{
		493	#if ENABLE_ICMP
		494	u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) \| v;
		495	#endif
		496	}
		497	else if (!strcmp (var, "enable-dns"))
		498	{
		499	#if ENABLE_DNS
		500	u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) \| v;
		501	#endif
		502	}
		503	else if (!strcmp (var, "enable-udp"))
		504	{
		505	u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) \| v;
		506	}
		507	else if (!strcmp (var, "enable-rawip"))
		508	{
		509	u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) \| v;
		510	}
		511	else if (!strcmp (var, "allow-direct"))
		512	node->allow_direct.push_back (strdup (val));
		513	else if (!strcmp (var, "deny-direct"))
		514	node->deny_direct.push_back (strdup (val));
		515	else if (!strcmp (var, "max-ttl"))
		516	node->max_ttl = atof (val);
		517	else if (!strcmp (var, "max-queue"))
		518	node->max_queue = atoi (val);
		519
		520	// unknown or misplaced
		521	else
		522	return _("unknown configuration directive - ignored");
		523
		524	return 0;
		525	}
		526
		527	void
		528	conf_node::finalise ()
		529	{
		530	if (max_queue < 1)
		531	{
		532	slog (L_WARN, _("%s: max-queue value invalid, setting it to 1."), nodename);
		533	max_queue = 1;
		534	}
		535
		536	if (routerprio > 1 && (connectmode != C_ALWAYS && connectmode != C_DISABLED))
		537	{
		538	//slog (L_WARN, _("%s: has non-zero router-priority but either 'never' or 'ondemand' as connectmode, setting it to 'always'."), nodename);
		539	connectmode = C_ALWAYS;
		540	}
		541	}
		542
		543	void
		544	configuration_parser::parse_argv ()
		545	{
		546	for (int i = 0; i < argc; ++i)
		547	{
		548	char *v = argv [i];
		549
		550	if (!*v)
		551	continue;
		552
		553	char *enode = v;
		554
		555	while (enode != '.' && enode > ' ' && enode != '=' && enode)
		556	enode++;
		557
		558	if (*enode != '.')
		559	enode = 0;
		560
		561	char *wnode = node == &conf.default_node
		562	? 0
		563	: node->nodename;
		564
		565	if ((!wnode && !enode)
		566	\|\| (wnode && enode && !strncmp (wnode, v, enode - v)))
		567	{
		568	const char *warn = parse_line (enode ? enode + 1 : v);
		569
		570	if (warn)
		571	slog (L_WARN, _("%s, while parsing command line option '%s'."), warn, v);
		572
		573	*v = 0;
		574	}
		575	}
		576	}
		577
		578	void
		579	configuration_parser::parse_file (const char *fname)
		580	{
		581	if (FILE *f = fopen (fname, "r"))
		582	{
168	char line[16384];	583	char line [2048];
169	int lineno = 0;	584	int lineno = 0;
170	char var, val;
171	conf_node *node = &default_node;
172		585
173	while (fgets (line, sizeof (line), f))	586	while (fgets (line, sizeof (line), f))
174	{	587	{
175	lineno++;	588	lineno++;
176		589
177	{	590	const char *warn = parse_line (line);
178	char *end = line + strlen (line);
179		591
180	while (*end < ' ' && end >= line)	592	if (warn)
181	end--;	593	slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno);
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	llevel = l;
225	else
226	slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
227	}
228	else if (!strcmp (var, "ip-proto"))
229	ip_proto = atoi (val);
230	else if (!strcmp (var, "icmp-type"))
231	{
232	#if ENABLE_ICMP
233	icmp_type = atoi (val);
234	#endif
235	}
236
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	parse_bool (ifpersist, "ifpersist", true, false);
289	}
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	else if (!strcmp (var, "http-proxy-host"))
305	{
306	#if ENABLE_HTTP_PROXY
307	proxy_host = strdup (val);
308	#endif
309	}
310	else if (!strcmp (var, "http-proxy-port"))
311	{
312	#if ENABLE_HTTP_PROXY
313	proxy_port = atoi (val);
314	#endif
315	}
316	else if (!strcmp (var, "http-proxy-auth"))
317	{
318	#if ENABLE_HTTP_PROXY
319	proxy_auth = (char )base64_encode ((const u8 )val, strlen (val));
320	#endif
321	}
322
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	else if (!strcmp (var, "udp-port"))
332	node->udp_port = atoi (val);
333	else if (!strcmp (var, "tcp-port"))
334	node->tcp_port = atoi (val);
335	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	else if (!strcmp (val, "disabled"))
346	node->connectmode = conf_node::C_DISABLED;
347	else
348	slog (L_WARN,
349	_("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
350	var, fname, lineno);
351	}
352	else if (!strcmp (var, "inherit-tos"))
353	{
354	parse_bool (node->inherit_tos, "inherit-tos", true, false);
355	}
356	else if (!strcmp (var, "compress"))
357	{
358	parse_bool (node->compress, "compress", true, false);
359	}
360	// all these bool options really really cost a lot of executable size!
361	else if (!strcmp (var, "enable-tcp"))
362	{
363	#if ENABLE_TCP
364	u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) \| v;
365	#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	#endif
372	}
373	else if (!strcmp (var, "enable-udp"))
374	{
375	u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) \| v;
376	}
377	else if (!strcmp (var, "enable-rawip"))
378	{
379	u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) \| v;
380	}
381
382	// unknown or misplaced
383	else
384	slog (L_WARN,
385	_("unknown or misplaced variable `%s', at '%s' line %d"),
386	var, fname, lineno);
387	}	594	}
388		595
389	fclose (f);	596	fclose (f);
		597
		598	parse_argv ();
390	}	599	}
391	else	600	else
392	{	601	{
393	slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));	602	slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
394	exit (1);	603	exit (EXIT_FAILURE);
395	}	604	}
		605	}
396		606
		607	configuration_parser::configuration_parser (configuration &conf,
		608	bool need_keys,
		609	int argc,
		610	char **argv)
		611	: conf (conf),need_keys (need_keys), argc (argc), argv (argv)
		612	{
		613	char *fname;
		614
		615	conf.clear ();
		616	node = &conf.default_node;
		617
		618	asprintf (&fname, "%s/gvpe.conf", confbase);
		619	parse_file (fname);
397	free (fname);	620	free (fname);
398		621
399	fname = config_filename (prikeyfile, "hostkey");	622	fname = conf.config_filename (conf.prikeyfile, "hostkey");
400		623
401	f = fopen (fname, "r");	624	if (FILE *f = fopen (fname, "r"))
402	if (f)
403	{	625	{
404	rsa_key = RSA_new ();	626	conf.rsa_key = RSA_new ();
405		627
406	if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))	628	if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL))
407	{	629	{
408	ERR_load_RSA_strings (); ERR_load_PEM_strings ();	630	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));	631	slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
410	exit (1);	632	exit (EXIT_FAILURE);
411	}	633	}
412		634
413	RSA_blinding_on (rsa_key, 0);	635	require (RSA_blinding_on (conf.rsa_key, 0));
414		636
415	fclose (f);	637	fclose (f);
416	}	638	}
417	else	639	else
418	{	640	{
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)	641	if (need_keys)
422	exit (1);	642	{
		643	slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
		644	exit (EXIT_FAILURE);
		645	}
423	}	646	}
424		647
425	free (fname);	648	free (fname);
426	}
427		649
		650	if (need_keys && ::thisnode
		651	&& conf.rsa_key && conf.thisnode && conf.thisnode->rsa_key)
		652	if (BN_cmp (conf.rsa_key->n, conf.thisnode->rsa_key->n) != 0
		653	\|\| BN_cmp (conf.rsa_key->e, conf.thisnode->rsa_key->e) != 0)
		654	{
		655	slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
		656	exit (EXIT_FAILURE);
		657	}
		658
		659	fname = conf.config_filename (conf.pidfilename);
		660	free (conf.pidfilename); conf.pidfilename = fname;
		661
		662	for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i)
		663	(*i)->finalise ();
		664	}
		665
		666	char *
428	char configuration::config_filename (const char name, const char *dflt)	667	configuration::config_filename (const char name, const char dflt)
429	{	668	{
430	char *fname;	669	char *fname;
431		670
432	asprintf (&fname, name ? name : dflt, ::thisnode);	671	asprintf (&fname, name ? name : dflt, ::thisnode ? ::thisnode : "<unset>");
433		672
434	if (!ABSOLUTE_PATH (fname))	673	if (!ABSOLUTE_PATH (fname))
435	{	674	{
436	char *rname = fname;	675	char *rname = fname;
437	asprintf (&fname, "%s/%s", confbase, rname);	676	asprintf (&fname, "%s/%s", confbase, rname);
438	free (rname);	677	free (rname);
439	}	678	}
440		679
441	return fname;	680	return fname;
		681	}
		682
		683	void
		684	conf_node::print ()
		685	{
		686	printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %02x %s%s%d\n",
		687	id,
		688	id >> 8, id & 0xff,
		689	compress ? 'Y' : 'N',
		690	connectmode == C_ONDEMAND ? "ondemand"
		691	: connectmode == C_NEVER ? "never"
		692	: connectmode == C_ALWAYS ? "always"
		693	: connectmode == C_DISABLED ? "disabled"
		694	: "",
		695	nodename,
		696	protocols,
		697	hostname ? hostname : "",
		698	hostname ? ":" : "",
		699	hostname ? udp_port : 0
		700	);
442	}	701	}
443		702
444	void	703	void
445	configuration::print ()	704	configuration::print ()
446	{	705	{
…		…
453	printf (_("interface: %s\n"), ifname);	712	printf (_("interface: %s\n"), ifname);
454	printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");	713	printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
455	printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);	714	printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
456	printf ("\n");	715	printf ("\n");
457		716
458	printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",	717	printf ("%4s %-17s %s %-8.8s %-10.10s %04s %s\n",
459	_("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));	718	_("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Prot"), _("Host:Port"));
460		719
461	for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)	720	for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
462	(*i)->print ();	721	(*i)->print ();
463		722
464	printf ("\n");	723	printf ("\n");
465	}	724	}
466		725
467	configuration::configuration ()	726	configuration::configuration ()
468	{	727	{
		728	asprintf (&confbase, "%s/gvpe", CONFDIR);
		729
469	init ();	730	init ();
470	}	731	}
471		732
472	configuration::~configuration ()	733	configuration::~configuration ()
473	{	734	{
474	cleanup ();	735	cleanup ();
475	}	736	}
476		737
477

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Comparing gvpe/src/conf.C (file contents): Revision 1.20 by pcg, Thu Oct 16 21:57:54 2003 UTC vs. Revision 1.61 by root, Tue Jul 16 16:44:36 2013 UTC

Diff Legend

Comparing gvpe/src/conf.C (file contents):
Revision 1.20 by pcg, Thu Oct 16 21:57:54 2003 UTC vs.
Revision 1.61 by root, Tue Jul 16 16:44:36 2013 UTC