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

Comparing gvpe/src/conf.C (file contents):
Revision 1.26 by pcg, Wed May 12 13:32:13 2004 UTC vs.
Revision 1.59 by root, Tue Dec 4 10:29:43 2012 UTC

…		…
1	/*	1	/*
2	conf.c -- configuration code	2	conf.C -- configuration code
3	Copyright (C) 2003-2004 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	#include <openssl/bn.h>	51	#include <openssl/bn.h>
39		52
40	#include "gettext.h"
41
42	#include "conf.h"	53	#include "conf.h"
43	#include "slog.h"	54	#include "slog.h"
44	#include "util.h"	55	#include "util.h"
45		56
46	char *confbase;	57	char *confbase;
47	char *thisnode;	58	char *thisnode;
48	char *identname;	59	char *identname;
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;
58	if (protset & PROT_DNSv4 ) return PROT_DNSv4;	70	if (protset & PROT_DNSv4 ) return PROT_DNSv4;
59		71
60	return 0;	72	return 0;
61	}	73	}
62		74
		75	const char *
63	const char *strprotocol (u8 protocol)	76	strprotocol (u8 protocol)
64	{	77	{
65	if (protocol & PROT_IPv4 ) return "rawip";	78	if (protocol & PROT_IPv4 ) return "rawip";
66	if (protocol & PROT_ICMPv4) return "icmp";	79	if (protocol & PROT_ICMPv4) return "icmp";
67	if (protocol & PROT_UDPv4 ) return "udp";	80	if (protocol & PROT_UDPv4 ) return "udp";
68	if (protocol & PROT_TCPv4 ) return "tcp";	81	if (protocol & PROT_TCPv4 ) return "tcp";
69	if (protocol & PROT_DNSv4 ) return "dns";	82	if (protocol & PROT_DNSv4 ) return "dns";
70		83
71	return "<unknown>";	84	return "<unknown>";
72	}	85	}
73		86
74	void	87	static bool
75	conf_node::print ()	88	match_list (const vector<const char > &list, const char str)
76	{	89	{
77	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 (); )
78	id,	91	if ((i)[0] == '' && !(*i)[1])
79	id >> 8, id & 0xff,	92	return true;
80	compress ? 'Y' : 'N',	93	else if (!strcmp (*i, str))
81	connectmode == C_ONDEMAND ? "ondemand" :	94	return true;
82	connectmode == C_NEVER ? "never" :	95
83	connectmode == C_ALWAYS ? "always" : "",	96	return false;
84	nodename,	97	}
85	hostname ? hostname : "",	98
86	hostname ? ":" : "",	99	bool
87	hostname ? udp_port : 0	100	conf_node::may_direct (struct conf_node *other)
88	);	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;
89	}	109	}
90		110
91	conf_node::~conf_node ()	111	conf_node::~conf_node ()
92	{	112	{
		113	#if 0
		114	// does not work, because string pointers etc. are shared
		115	// is not called, however
93	if (rsa_key)	116	if (rsa_key)
94	RSA_free (rsa_key);	117	RSA_free (rsa_key);
95		118
96	free (nodename);	119	free (nodename);
97	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
98	}	127	}
99		128
		129	void
100	void configuration::init ()	130	configuration::init ()
101	{	131	{
102	memset (this, 0, sizeof (*this));	132	memset (this, 0, sizeof (*this));
103		133
104	mtu = DEFAULT_MTU;	134	mtu = DEFAULT_MTU;
		135	nfmark = 0;
105	rekey = DEFAULT_REKEY;	136	rekey = DEFAULT_REKEY;
106	keepalive = DEFAULT_KEEPALIVE;	137	keepalive = DEFAULT_KEEPALIVE;
107	llevel = L_INFO;	138	llevel = L_INFO;
108	ip_proto = IPPROTO_GRE;	139	ip_proto = IPPROTO_GRE;
109	#if ENABLE_ICMP	140	#if ENABLE_ICMP
…		…
112		143
113	default_node.udp_port = DEFAULT_UDPPORT;	144	default_node.udp_port = DEFAULT_UDPPORT;
114	default_node.tcp_port = DEFAULT_UDPPORT; // ehrm	145	default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
115	default_node.connectmode = conf_node::C_ALWAYS;	146	default_node.connectmode = conf_node::C_ALWAYS;
116	default_node.compress = true;	147	default_node.compress = true;
117	default_node.protocols = PROT_UDPv4;	148	default_node.protocols = 0;
		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 ("");
118		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
119	conf.pidfilename = strdup (LOCALSTATEDIR "/run/vped.pid");	166	conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
120	}	167	}
121		168
		169	void
122	void configuration::cleanup()	170	configuration::cleanup ()
123	{	171	{
124	if (rsa_key)	172	if (rsa_key)
125	RSA_free (rsa_key);	173	RSA_free (rsa_key);
126		174
127	rsa_key = 0;	175	rsa_key = 0;
128		176
129	free (pidfilename); pidfilename = 0;	177	free (pidfilename); pidfilename = 0;
130	free (ifname); ifname = 0;	178	free (ifname); ifname = 0;
131	#if ENABLE_HTTP_PROXY	179	#if ENABLE_HTTP_PROXY
132	free (proxy_host); proxy_host = 0;	180	free (proxy_host); proxy_host = 0;
133	free (proxy_auth); proxy_auth = 0;	181	free (proxy_auth); proxy_auth = 0;
134	#endif	182	#endif
		183	#if ENABLE_DNS
		184	free (dns_forw_host); dns_forw_host = 0;
		185	#endif
		186	free (change_root); change_root = 0;
		187	free (script_if_up); script_if_up = 0;
		188	free (script_node_up); script_node_up = 0;
		189	free (script_node_change); script_node_change = 0;
		190	free (script_node_down); script_node_down = 0;
135	}	191	}
136		192
137	void	193	void
138	configuration::clear_config ()	194	configuration::clear ()
139	{	195	{
140	for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)	196	for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
141	delete *i;	197	delete *i;
142		198
143	nodes.clear ();	199	nodes.clear ();
144		200
145	cleanup ();	201	cleanup ();
146	init ();	202	init ();
147	}	203	}
148		204
		205	//static bool
		206	//is_true (const char *name)
		207	//{
		208	//re
		209	//}
		210
149	#define parse_bool(target,name,trueval,falseval) \	211	#define parse_bool(target,name,trueval,falseval) do { \
150	if (!strcmp (val, "yes")) target = trueval; \	212	if (!strcmp (val, "yes")) target = trueval; \
151	else if (!strcmp (val, "no")) target = falseval; \	213	else if (!strcmp (val, "no")) target = falseval; \
152	else if (!strcmp (val, "true")) target = trueval; \	214	else if (!strcmp (val, "true")) target = trueval; \
153	else if (!strcmp (val, "false")) target = falseval; \	215	else if (!strcmp (val, "false")) target = falseval; \
154	else if (!strcmp (val, "on")) target = trueval; \	216	else if (!strcmp (val, "on")) target = trueval; \
155	else if (!strcmp (val, "off")) target = falseval; \	217	else if (!strcmp (val, "off")) target = falseval; \
156	else \	218	else \
157	slog (L_WARN, \
158	_("illegal value for '%s', only 'yes\|true\|on' or 'no\|false\|off' allowed, at '%s' line %d"), \	219	return _("illegal boolean value, only 'yes\|true\|on' or 'no\|false\|off' allowed, ignored"); \
159	name, var, fname, lineno);	220	} while (0)
160		221
161	void configuration::read_config (bool need_keys)	222	const char *
		223	configuration_parser::parse_line (char *line)
162	{	224	{
		225	{
		226	char *end = line + strlen (line);
		227
		228	while (*end < ' ' && end >= line)
		229	end--;
		230
		231	*++end = 0;
		232	}
		233
		234	char *tok = line;
		235	const char *var = strtok (tok, "\t =");
		236	tok = 0;
		237
		238	if (!var \|\| !var[0])
		239	return 0; /* no tokens on this line */
		240
		241	if (var[0] == '#')
		242	return 0; /* comment: ignore */
		243
		244	char *val = strtok (NULL, "\t\n\r =");
		245
		246	if (!val \|\| val[0] == '#')
		247	return _("no value given for variable, ignored");
		248
		249	else if (!strcmp (var, "on"))
		250	{
		251	if (::thisnode
		252	&& ((val[0] == '!' && strcmp (val + 1, ::thisnode))
		253	\|\| !strcmp (val, ::thisnode)))
		254	return parse_line (strtok (NULL, "\n\r"));
		255	}
		256
		257	else if (!strcmp (var, "include"))
		258	{
		259	char *fname = conf.config_filename (val);
		260	parse_file (fname);
		261	free (fname);
		262	}
		263
		264	// truly global
		265	else if (!strcmp (var, "loglevel"))
		266	{
		267	loglevel l = string_to_loglevel (val);
		268
		269	if (l == L_NONE)
		270	return _("unknown loglevel, ignored");
		271	}
		272	else if (!strcmp (var, "ip-proto"))
		273	conf.ip_proto = atoi (val);
		274	else if (!strcmp (var, "icmp-type"))
		275	{
		276	#if ENABLE_ICMP
		277	conf.icmp_type = atoi (val);
		278	#endif
		279	}
		280	else if (!strcmp (var, "chuser"))
		281	{
		282	struct passwd *pw = getpwnam (val);
		283	if (!pw)
		284	return _("user specified for chuser not found");
		285
		286	conf.change_uid = pw->pw_uid;
		287	conf.change_gid = pw->pw_gid;
		288	}
		289	else if (!strcmp (var, "chuid"))
		290	conf.change_uid = atoi (val);
		291	else if (!strcmp (var, "chgid"))
		292	conf.change_gid = atoi (val);
		293	else if (!strcmp (var, "chroot"))
		294	free (conf.change_root), conf.change_root = strdup (val);
		295
		296	// per node
		297	else if (!strcmp (var, "node"))
		298	{
		299	parse_argv ();
		300
		301	conf.default_node.id++;
		302	node = new conf_node (conf.default_node);
		303	conf.nodes.push_back (node);
		304	node->nodename = strdup (val);
		305
		306	{
163	char *fname;	307	char *fname;
164	FILE *f;	308	FILE *f;
165		309
166	clear_config ();	310	asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
167		311
168	asprintf (&fname, "%s/vped.conf", confbase);
169	f = fopen (fname, "r");	312	f = fopen (fname, "r");
		313	if (f)
		314	{
		315	node->rsa_key = RSA_new ();
170		316
171	if (f)	317	if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
		318	{
		319	ERR_load_RSA_strings (); ERR_load_PEM_strings ();
		320	slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
		321	exit (EXIT_FAILURE);
		322	}
		323
		324	require (RSA_blinding_on (node->rsa_key, 0));
		325
		326	fclose (f);
		327	}
		328	else
		329	{
		330	slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
		331
		332	if (need_keys)
		333	exit (EXIT_FAILURE);
		334	}
		335
		336	free (fname);
		337	}
		338
		339	if (::thisnode && !strcmp (node->nodename, ::thisnode))
		340	conf.thisnode = node;
172	{	341	}
		342	else if (!strcmp (var, "private-key"))
		343	free (conf.prikeyfile), conf.prikeyfile = strdup (val);
		344	else if (!strcmp (var, "ifpersist"))
		345	parse_bool (conf.ifpersist, "ifpersist", true, false);
		346	else if (!strcmp (var, "ifname"))
		347	free (conf.ifname), conf.ifname = strdup (val);
		348	else if (!strcmp (var, "rekey"))
		349	conf.rekey = atoi (val);
		350	else if (!strcmp (var, "keepalive"))
		351	conf.keepalive = atoi (val);
		352	else if (!strcmp (var, "mtu"))
		353	conf.mtu = atoi (val);
		354	else if (!strcmp (var, "nfmark"))
		355	conf.nfmark = atoi (val);
		356	else if (!strcmp (var, "if-up"))
		357	free (conf.script_if_up), conf.script_if_up = strdup (val);
		358	else if (!strcmp (var, "node-up"))
		359	free (conf.script_node_up), conf.script_node_up = strdup (val);
		360	else if (!strcmp (var, "node-change"))
		361	free (conf.script_node_change), conf.script_node_change = strdup (val);
		362	else if (!strcmp (var, "node-down"))
		363	free (conf.script_node_down), conf.script_node_down = strdup (val);
		364	else if (!strcmp (var, "pid-file"))
		365	free (conf.pidfilename), conf.pidfilename = strdup (val);
		366	else if (!strcmp (var, "dns-forw-host"))
		367	{
		368	#if ENABLE_DNS
		369	free (conf.dns_forw_host), conf.dns_forw_host = strdup (val);
		370	#endif
		371	}
		372	else if (!strcmp (var, "dns-forw-port"))
		373	{
		374	#if ENABLE_DNS
		375	conf.dns_forw_port = atoi (val);
		376	#endif
		377	}
		378	else if (!strcmp (var, "dns-timeout-factor"))
		379	{
		380	#if ENABLE_DNS
		381	conf.dns_timeout_factor = atof (val);
		382	#endif
		383	}
		384	else if (!strcmp (var, "dns-send-interval"))
		385	{
		386	#if ENABLE_DNS
		387	conf.dns_send_interval = atoi (val);
		388	#endif
		389	}
		390	else if (!strcmp (var, "dns-overlap-factor"))
		391	{
		392	#if ENABLE_DNS
		393	conf.dns_overlap_factor = atof (val);
		394	#endif
		395	}
		396	else if (!strcmp (var, "dns-max-outstanding"))
		397	{
		398	#if ENABLE_DNS
		399	conf.dns_max_outstanding = atoi (val);
		400	#endif
		401	}
		402	else if (!strcmp (var, "dns-case-preserving"))
		403	{
		404	#if ENABLE_DNS
		405	parse_bool (conf.dns_case_preserving, "dns-case-preserving", true, false);
		406	#endif
		407	}
		408	else if (!strcmp (var, "http-proxy-host"))
		409	{
		410	#if ENABLE_HTTP_PROXY
		411	free (conf.proxy_host), conf.proxy_host = strdup (val);
		412	#endif
		413	}
		414	else if (!strcmp (var, "http-proxy-port"))
		415	{
		416	#if ENABLE_HTTP_PROXY
		417	conf.proxy_port = atoi (val);
		418	#endif
		419	}
		420	else if (!strcmp (var, "http-proxy-auth"))
		421	{
		422	#if ENABLE_HTTP_PROXY
		423	conf.proxy_auth = (char )base64_encode ((const u8 )val, strlen (val));
		424	#endif
		425	}
		426
		427	/* node-specific, non-defaultable */
		428	else if (node != &conf.default_node && !strcmp (var, "hostname"))
		429	free (node->hostname), node->hostname = strdup (val);
		430
		431	/* node-specific, defaultable */
		432	else if (!strcmp (var, "udp-port"))
		433	node->udp_port = atoi (val);
		434	else if (!strcmp (var, "tcp-port"))
		435	node->tcp_port = atoi (val);
		436	else if (!strcmp (var, "dns-hostname"))
		437	{
		438	#if ENABLE_DNS
		439	free (node->dns_hostname), node->dns_hostname = strdup (val);
		440	#endif
		441	}
		442	else if (!strcmp (var, "dns-port"))
		443	{
		444	#if ENABLE_DNS
		445	node->dns_port = atoi (val);
		446	#endif
		447	}
		448	else if (!strcmp (var, "dns-domain"))
		449	{
		450	#if ENABLE_DNS
		451	free (node->domain), node->domain = strdup (val);
		452	#endif
		453	}
		454	else if (!strcmp (var, "if-up-data"))
		455	free (node->if_up_data), node->if_up_data = strdup (val);
		456	else if (!strcmp (var, "router-priority"))
		457	node->routerprio = atoi (val);
		458	else if (!strcmp (var, "max-retry"))
		459	node->max_retry = atoi (val);
		460	else if (!strcmp (var, "connect"))
		461	{
		462	if (!strcmp (val, "ondemand"))
		463	node->connectmode = conf_node::C_ONDEMAND;
		464	else if (!strcmp (val, "never"))
		465	node->connectmode = conf_node::C_NEVER;
		466	else if (!strcmp (val, "always"))
		467	node->connectmode = conf_node::C_ALWAYS;
		468	else if (!strcmp (val, "disabled"))
		469	node->connectmode = conf_node::C_DISABLED;
		470	else
		471	return _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', ignored");
		472	}
		473	else if (!strcmp (var, "inherit-tos"))
		474	parse_bool (node->inherit_tos, "inherit-tos", true, false);
		475	else if (!strcmp (var, "compress"))
		476	parse_bool (node->compress, "compress", true, false);
		477	// all these bool options really really cost a lot of executable size!
		478	else if (!strcmp (var, "enable-tcp"))
		479	{
		480	#if ENABLE_TCP
		481	u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) \| v;
		482	#endif
		483	}
		484	else if (!strcmp (var, "enable-icmp"))
		485	{
		486	#if ENABLE_ICMP
		487	u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) \| v;
		488	#endif
		489	}
		490	else if (!strcmp (var, "enable-dns"))
		491	{
		492	#if ENABLE_DNS
		493	u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) \| v;
		494	#endif
		495	}
		496	else if (!strcmp (var, "enable-udp"))
		497	{
		498	u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) \| v;
		499	}
		500	else if (!strcmp (var, "enable-rawip"))
		501	{
		502	u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) \| v;
		503	}
		504	else if (!strcmp (var, "allow-direct"))
		505	node->allow_direct.push_back (strdup (val));
		506	else if (!strcmp (var, "deny-direct"))
		507	node->deny_direct.push_back (strdup (val));
		508	else if (!strcmp (var, "max-ttl"))
		509	node->max_ttl = atof (val);
		510	else if (!strcmp (var, "max-queue"))
		511	node->max_queue = atoi (val);
		512
		513	// unknown or misplaced
		514	else
		515	return _("unknown configuration directive - ignored");
		516
		517	return 0;
		518	}
		519
		520	void
		521	conf_node::finalise ()
		522	{
		523	if (max_queue < 1)
		524	{
		525	slog (L_WARN, _("%s: max-queue value invalid, setting it to 1."), nodename);
		526	max_queue = 1;
		527	}
		528
		529	if (routerprio > 1 && (connectmode != C_ALWAYS && connectmode != C_DISABLED))
		530	{
		531	//slog (L_WARN, _("%s: has non-zero router-priority but either 'never' or 'ondemand' as connectmode, setting it to 'always'."), nodename);
		532	connectmode = C_ALWAYS;
		533	}
		534	}
		535
		536	void
		537	configuration_parser::parse_argv ()
		538	{
		539	for (int i = 0; i < argc; ++i)
		540	{
		541	char *v = argv [i];
		542
		543	if (!*v)
		544	continue;
		545
		546	char *enode = v;
		547
		548	while (enode != '.' && enode > ' ' && enode != '=' && enode)
		549	enode++;
		550
		551	if (*enode != '.')
		552	enode = 0;
		553
		554	char *wnode = node == &conf.default_node
		555	? 0
		556	: node->nodename;
		557
		558	if ((!wnode && !enode)
		559	\|\| (wnode && enode && !strncmp (wnode, v, enode - v)))
		560	{
		561	const char *warn = parse_line (enode ? enode + 1 : v);
		562
		563	if (warn)
		564	slog (L_WARN, _("%s, while parsing command line option '%s'."), warn, v);
		565
		566	*v = 0;
		567	}
		568	}
		569	}
		570
		571	void
		572	configuration_parser::parse_file (const char *fname)
		573	{
		574	if (FILE *f = fopen (fname, "r"))
		575	{
173	char line[16384];	576	char line [2048];
174	int lineno = 0;	577	int lineno = 0;
175	char var, val;
176	conf_node *node = &default_node;
177		578
178	while (fgets (line, sizeof (line), f))	579	while (fgets (line, sizeof (line), f))
179	{	580	{
180	lineno++;	581	lineno++;
181		582
182	{	583	const char *warn = parse_line (line);
183	char *end = line + strlen (line);
184		584
185	while (*end < ' ' && end >= line)	585	if (warn)
186	end--;	586	slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno);
187
188	*++end = 0;
189	}
190
191	char *tok = line;
192
193	retry:
194	var = strtok (tok, "\t =");
195	tok = 0;
196
197	if (!var \|\| !var[0])
198	continue; /* no tokens on this line */
199
200	if (var[0] == '#')
201	continue; /* comment: ignore */
202
203	val = strtok (NULL, "\t\n\r =");
204
205	if (!val \|\| val[0] == '#')
206	{
207	slog (L_WARN,
208	_("no value for variable `%s', at '%s' line %d"),
209	var, fname, lineno);
210	break;
211	}
212
213	if (!strcmp (var, "on"))
214	{
215	if (!::thisnode
216	\|\| (val[0] == '!' && strcmp (val + 1, ::thisnode))
217	\|\| !strcmp (val, ::thisnode))
218	goto retry;
219
220	continue;
221	}
222
223	// truly global
224	if (!strcmp (var, "loglevel"))
225	{
226	loglevel l = string_to_loglevel (val);
227
228	if (l != L_NONE)
229	llevel = l;
230	else
231	slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
232	}
233	else if (!strcmp (var, "ip-proto"))
234	ip_proto = atoi (val);
235	else if (!strcmp (var, "icmp-type"))
236	{
237	#if ENABLE_ICMP
238	icmp_type = atoi (val);
239	#endif
240	}
241
242	// per config
243	else if (!strcmp (var, "node"))
244	{
245	default_node.id++;
246
247	node = new conf_node (default_node);
248
249	nodes.push_back (node);
250
251	node->nodename = strdup (val);
252
253	{
254	char *fname;
255	FILE *f;
256
257	asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
258
259	f = fopen (fname, "r");
260	if (f)
261	{
262	node->rsa_key = RSA_new ();
263
264	if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
265	{
266	ERR_load_RSA_strings (); ERR_load_PEM_strings ();
267	slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
268	exit (EXIT_FAILURE);
269	}
270
271	require (RSA_blinding_on (node->rsa_key, 0));
272
273	fclose (f);
274	}
275	else
276	{
277	slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
278
279	if (need_keys)
280	exit (EXIT_FAILURE);
281	}
282
283	free (fname);
284	}
285
286	if (::thisnode && !strcmp (node->nodename, ::thisnode))
287	thisnode = node;
288	}
289	else if (!strcmp (var, "private-key"))
290	free (prikeyfile), prikeyfile = strdup (val);
291	else if (!strcmp (var, "ifpersist"))
292	{
293	parse_bool (ifpersist, "ifpersist", true, false);
294	}
295	else if (!strcmp (var, "ifname"))
296	free (ifname), ifname = strdup (val);
297	else if (!strcmp (var, "rekey"))
298	rekey = atoi (val);
299	else if (!strcmp (var, "keepalive"))
300	keepalive = atoi (val);
301	else if (!strcmp (var, "mtu"))
302	mtu = atoi (val);
303	else if (!strcmp (var, "if-up"))
304	free (script_if_up), script_if_up = strdup (val);
305	else if (!strcmp (var, "node-up"))
306	free (script_node_up), script_node_up = strdup (val);
307	else if (!strcmp (var, "node-down"))
308	free (script_node_down), script_node_down = strdup (val);
309	else if (!strcmp (var, "pid-file"))
310	free (pidfilename), pidfilename = strdup (val);
311	else if (!strcmp (var, "http-proxy-host"))
312	{
313	#if ENABLE_HTTP_PROXY
314	free (proxy_host), proxy_host = strdup (val);
315	#endif
316	}
317	else if (!strcmp (var, "http-proxy-port"))
318	{
319	#if ENABLE_HTTP_PROXY
320	proxy_port = atoi (val);
321	#endif
322	}
323	else if (!strcmp (var, "http-proxy-auth"))
324	{
325	#if ENABLE_HTTP_PROXY
326	proxy_auth = (char )base64_encode ((const u8 )val, strlen (val));
327	#endif
328	}
329
330	/* node-specific, non-defaultable */
331	else if (node != &default_node && !strcmp (var, "hostname"))
332	free (node->hostname), node->hostname = strdup (val);
333
334	/* node-specific, defaultable */
335	else if (!strcmp (var, "udp-port"))
336	node->udp_port = atoi (val);
337	else if (!strcmp (var, "tcp-port"))
338	node->tcp_port = atoi (val);
339	else if (!strcmp (var, "dns-port"))
340	node->dns_port = atoi (val);
341	else if (!strcmp (var, "router-priority"))
342	node->routerprio = atoi (val);
343	else if (!strcmp (var, "connect"))
344	{
345	if (!strcmp (val, "ondemand"))
346	node->connectmode = conf_node::C_ONDEMAND;
347	else if (!strcmp (val, "never"))
348	node->connectmode = conf_node::C_NEVER;
349	else if (!strcmp (val, "always"))
350	node->connectmode = conf_node::C_ALWAYS;
351	else if (!strcmp (val, "disabled"))
352	node->connectmode = conf_node::C_DISABLED;
353	else
354	slog (L_WARN,
355	_("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
356	var, fname, lineno);
357	}
358	else if (!strcmp (var, "inherit-tos"))
359	{
360	parse_bool (node->inherit_tos, "inherit-tos", true, false);
361	}
362	else if (!strcmp (var, "compress"))
363	{
364	parse_bool (node->compress, "compress", true, false);
365	}
366	// all these bool options really really cost a lot of executable size!
367	else if (!strcmp (var, "enable-tcp"))
368	{
369	#if ENABLE_TCP
370	u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) \| v;
371	#endif
372	}
373	else if (!strcmp (var, "enable-icmp"))
374	{
375	#if ENABLE_ICMP
376	u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) \| v;
377	#endif
378	}
379	else if (!strcmp (var, "enable-dns"))
380	{
381	#if ENABLE_DNS
382	u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) \| v;
383	#endif
384	}
385	else if (!strcmp (var, "enable-udp"))
386	{
387	u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) \| v;
388	}
389	else if (!strcmp (var, "enable-rawip"))
390	{;
391	u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) \| v;
392	}
393
394	// unknown or misplaced
395	else
396	slog (L_WARN,
397	_("unknown or misplaced variable `%s', at '%s' line %d"),
398	var, fname, lineno);
399	}	587	}
400		588
401	fclose (f);	589	fclose (f);
		590
		591	parse_argv ();
402	}	592	}
403	else	593	else
404	{	594	{
405	slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));	595	slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
406	exit (EXIT_FAILURE);	596	exit (EXIT_FAILURE);
407	}	597	}
		598	}
408		599
		600	configuration_parser::configuration_parser (configuration &conf,
		601	bool need_keys,
		602	int argc,
		603	char **argv)
		604	: conf (conf),need_keys (need_keys), argc (argc), argv (argv)
		605	{
		606	char *fname;
		607
		608	conf.clear ();
		609	node = &conf.default_node;
		610
		611	asprintf (&fname, "%s/gvpe.conf", confbase);
		612	parse_file (fname);
409	free (fname);	613	free (fname);
410		614
411	fname = config_filename (prikeyfile, "hostkey");	615	fname = conf.config_filename (conf.prikeyfile, "hostkey");
412		616
413	f = fopen (fname, "r");	617	if (FILE *f = fopen (fname, "r"))
414	if (f)
415	{	618	{
416	rsa_key = RSA_new ();	619	conf.rsa_key = RSA_new ();
417		620
418	if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))	621	if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL))
419	{	622	{
420	ERR_load_RSA_strings (); ERR_load_PEM_strings ();	623	ERR_load_RSA_strings (); ERR_load_PEM_strings ();
421	slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));	624	slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
422	exit (EXIT_FAILURE);	625	exit (EXIT_FAILURE);
423	}	626	}
424		627
425	require (RSA_blinding_on (rsa_key, 0));	628	require (RSA_blinding_on (conf.rsa_key, 0));
426		629
427	fclose (f);	630	fclose (f);
428	}	631	}
429	else	632	else
430	{	633	{
…		…
432		635
433	if (need_keys)	636	if (need_keys)
434	exit (EXIT_FAILURE);	637	exit (EXIT_FAILURE);
435	}	638	}
436		639
		640	free (fname);
		641
437	if (need_keys && ::thisnode	642	if (need_keys && ::thisnode
438	&& rsa_key && thisnode && thisnode->rsa_key)	643	&& conf.rsa_key && conf.thisnode && conf.thisnode->rsa_key)
439	if (BN_cmp (rsa_key->n, thisnode->rsa_key->n) != 0	644	if (BN_cmp (conf.rsa_key->n, conf.thisnode->rsa_key->n) != 0
440	\|\| BN_cmp (rsa_key->e, thisnode->rsa_key->e) != 0)	645	\|\| BN_cmp (conf.rsa_key->e, conf.thisnode->rsa_key->e) != 0)
441	{	646	{
442	slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);	647	slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
443	exit (EXIT_FAILURE);	648	exit (EXIT_FAILURE);
444	}	649	}
445		650
446	free (fname);	651	for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i)
		652	(*i)->finalise ();
447	}	653	}
448		654
		655	char *
449	char configuration::config_filename (const char name, const char *dflt)	656	configuration::config_filename (const char name, const char dflt)
450	{	657	{
451	char *fname;	658	char *fname;
452		659
453	asprintf (&fname, name ? name : dflt, ::thisnode);	660	asprintf (&fname, name ? name : dflt, ::thisnode);
454		661
…		…
458	asprintf (&fname, "%s/%s", confbase, rname);	665	asprintf (&fname, "%s/%s", confbase, rname);
459	free (rname);	666	free (rname);
460	}	667	}
461		668
462	return fname;	669	return fname;
		670	}
		671
		672	void
		673	conf_node::print ()
		674	{
		675	printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %02x %s%s%d\n",
		676	id,
		677	id >> 8, id & 0xff,
		678	compress ? 'Y' : 'N',
		679	connectmode == C_ONDEMAND ? "ondemand"
		680	: connectmode == C_NEVER ? "never"
		681	: connectmode == C_ALWAYS ? "always"
		682	: connectmode == C_DISABLED ? "disabled"
		683	: "",
		684	nodename,
		685	protocols,
		686	hostname ? hostname : "",
		687	hostname ? ":" : "",
		688	hostname ? udp_port : 0
		689	);
463	}	690	}
464		691
465	void	692	void
466	configuration::print ()	693	configuration::print ()
467	{	694	{
…		…
474	printf (_("interface: %s\n"), ifname);	701	printf (_("interface: %s\n"), ifname);
475	printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");	702	printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
476	printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);	703	printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
477	printf ("\n");	704	printf ("\n");
478		705
479	printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",	706	printf ("%4s %-17s %s %-8.8s %-10.10s %04s %s\n",
480	_("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));	707	_("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Prot"), _("Host:Port"));
481		708
482	for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)	709	for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
483	(*i)->print ();	710	(*i)->print ();
484		711
485	printf ("\n");	712	printf ("\n");
486	}	713	}
487		714
488	configuration::configuration ()	715	configuration::configuration ()
489	{	716	{
490	asprintf (&confbase, "%s/vpe", CONFDIR);	717	asprintf (&confbase, "%s/gvpe", CONFDIR);
491		718
492	init ();	719	init ();
493	}	720	}
494		721
495	configuration::~configuration ()	722	configuration::~configuration ()
496	{	723	{
497	cleanup ();	724	cleanup ();
498	}	725	}
499		726
500

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Comparing gvpe/src/conf.C (file contents): Revision 1.26 by pcg, Wed May 12 13:32:13 2004 UTC vs. Revision 1.59 by root, Tue Dec 4 10:29:43 2012 UTC

Diff Legend

Comparing gvpe/src/conf.C (file contents):
Revision 1.26 by pcg, Wed May 12 13:32:13 2004 UTC vs.
Revision 1.59 by root, Tue Dec 4 10:29:43 2012 UTC