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

Comparing gvpe/src/conf.C (file contents):
Revision 1.33 by pcg, Sun Mar 6 18:34:46 2005 UTC vs.
Revision 1.64 by root, Thu Jul 18 17:35:10 2013 UTC

…		…
1	/*	1	/*
2	conf.c -- configuration code	2	conf.C -- configuration code
3	Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de>	3	Copyright (C) 2003-2008,2011 Marc Lehmann <gvpe@schmorp.de>
4		4
5	This file is part of GVPE.	5	This file is part of GVPE.
6		6
7	GVPE is free software; you can redistribute it and/or modify	7	GVPE is free software; you can redistribute it and/or modify it
8	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
9	the Free Software Foundation; either version 2 of the License, or	9	Free Software Foundation; either version 3 of the License, or (at your
10	(at your option) any later version.	10	option) any later version.
11		11
12	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
13	but WITHOUT ANY WARRANTY; without even the implied warranty of	13	WITHOUT ANY WARRANTY; without even the implied warranty of
14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
15	GNU General Public License for more details.	15	Public License for more details.
16		16
17	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
18	along with gvpe; if not, write to the Free Software	18	with this program; if not, see <http://www.gnu.org/licenses/>.
19	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.
20	*/	30	*/
21		31
22	#include "config.h"	32	#include "config.h"
23		33
24	#include <cstdio>	34	#include <cstdio>
28	#include <errno.h>	38	#include <errno.h>
29	#include <netdb.h>	39	#include <netdb.h>
30	#include <sys/stat.h>	40	#include <sys/stat.h>
31	#include <sys/types.h>	41	#include <sys/types.h>
32	#include <unistd.h>	42	#include <unistd.h>
		43	#include <pwd.h>
33		44
34	#include "netcompat.h"	45	#include "netcompat.h"
35		46
36	#include <openssl/err.h>	47	#include <openssl/err.h>
37	#include <openssl/pem.h>	48	#include <openssl/pem.h>
38	#include <openssl/rsa.h>	49	#include <openssl/rsa.h>
39	#include <openssl/rand.h>	50	#include <openssl/rand.h>
40	#include <openssl/bn.h>	51	#include <openssl/bn.h>
41		52
42	#include "gettext.h"
43
44	#include "conf.h"	53	#include "conf.h"
45	#include "slog.h"	54	#include "slog.h"
46	#include "util.h"	55	#include "util.h"
47		56
48	char *confbase;	57	char *confbase;
49	char *thisnode;	58	char *thisnode;
50	char *identname;	59	char *identname;
51		60
52	struct configuration conf;	61	struct configuration conf;
53		62
		63	u8
54	u8 best_protocol (u8 protset)	64	best_protocol (u8 protset)
55	{	65	{
56	if (protset & PROT_IPv4 ) return PROT_IPv4;	66	if (protset & PROT_IPv4 ) return PROT_IPv4;
57	if (protset & PROT_ICMPv4) return PROT_ICMPv4;	67	if (protset & PROT_ICMPv4) return PROT_ICMPv4;
58	if (protset & PROT_UDPv4 ) return PROT_UDPv4;	68	if (protset & PROT_UDPv4 ) return PROT_UDPv4;
59	if (protset & PROT_TCPv4 ) return PROT_TCPv4;	69	if (protset & PROT_TCPv4 ) return PROT_TCPv4;
60	if (protset & PROT_DNSv4 ) return PROT_DNSv4;	70	if (protset & PROT_DNSv4 ) return PROT_DNSv4;
61		71
62	return 0;	72	return 0;
63	}	73	}
64		74
		75	const char *
65	const char *strprotocol (u8 protocol)	76	strprotocol (u8 protocol)
66	{	77	{
67	if (protocol & PROT_IPv4 ) return "rawip";	78	if (protocol & PROT_IPv4 ) return "rawip";
68	if (protocol & PROT_ICMPv4) return "icmp";	79	if (protocol & PROT_ICMPv4) return "icmp";
69	if (protocol & PROT_UDPv4 ) return "udp";	80	if (protocol & PROT_UDPv4 ) return "udp";
70	if (protocol & PROT_TCPv4 ) return "tcp";	81	if (protocol & PROT_TCPv4 ) return "tcp";
71	if (protocol & PROT_DNSv4 ) return "dns";	82	if (protocol & PROT_DNSv4 ) return "dns";
72		83
73	return "<unknown>";	84	return "<unknown>";
74	}	85	}
75		86
76	void	87	static bool
77	conf_node::print ()	88	match_list (const vector<const char > &list, const char str)
78	{	89	{
79	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 (); )
80	id,	91	if ((i)[0] == '' && !(*i)[1])
81	id >> 8, id & 0xff,	92	return true;
82	compress ? 'Y' : 'N',	93	else if (!strcmp (*i, str))
83	connectmode == C_ONDEMAND ? "ondemand" :	94	return true;
84	connectmode == C_NEVER ? "never" :	95
85	connectmode == C_ALWAYS ? "always" : "",	96	return false;
86	nodename,	97	}
87	hostname ? hostname : "",	98
88	hostname ? ":" : "",	99	bool
89	hostname ? udp_port : 0	100	conf_node::may_direct (struct conf_node *other)
90	);	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;
91	}	109	}
92		110
93	conf_node::~conf_node ()	111	conf_node::~conf_node ()
94	{	112	{
		113	#if 0
		114	// does not work, because string pointers etc. are shared
		115	// is not called, however
95	if (rsa_key)	116	if (rsa_key)
96	RSA_free (rsa_key);	117	RSA_free (rsa_key);
97		118
98	free (nodename);	119	free (nodename);
99	free (hostname);	120	free (hostname);
		121	free (if_up_data);
100	#if ENABLE_DNS	122	#if ENABLE_DNS
101	free (domain);	123	free (domain);
102	free (dns_hostname);	124	free (dns_hostname);
103	#endif	125	#endif
		126	#endif
104	}	127	}
105		128
		129	void
106	void configuration::init ()	130	configuration::init ()
107	{	131	{
108	memset (this, 0, sizeof (*this));	132	memset (this, 0, sizeof (*this));
109		133
110	mtu = DEFAULT_MTU;	134	mtu = DEFAULT_MTU;
		135	nfmark = 0;
111	rekey = DEFAULT_REKEY;	136	rekey = DEFAULT_REKEY;
112	keepalive = DEFAULT_KEEPALIVE;	137	keepalive = DEFAULT_KEEPALIVE;
113	llevel = L_INFO;	138	llevel = L_INFO;
114	ip_proto = IPPROTO_GRE;	139	ip_proto = IPPROTO_GRE;
115	#if ENABLE_ICMP	140	#if ENABLE_ICMP
…		…
120	default_node.tcp_port = DEFAULT_UDPPORT; // ehrm	145	default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
121	default_node.connectmode = conf_node::C_ALWAYS;	146	default_node.connectmode = conf_node::C_ALWAYS;
122	default_node.compress = true;	147	default_node.compress = true;
123	default_node.protocols = 0;	148	default_node.protocols = 0;
124	default_node.max_retry = DEFAULT_MAX_RETRY;	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 ("");
125		153
126	#if ENABLE_DNS	154	#if ENABLE_DNS
127	default_node.dns_port = 0; // default is 0 == client	155	default_node.dns_port = 0; // default is 0 == client
		156
		157	dns_case_preserving = true;
128	dns_forw_host = strdup ("127.0.0.1");	158	dns_forw_host = strdup ("127.0.0.1");
129	dns_forw_port = 53;	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;
130	#endif	164	#endif
131		165
132	conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");	166	pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
		167	seed_dev = strdup ("/dev/urandom");
		168	reseed = DEFAULT_RESEED;
133	}	169	}
134		170
		171	void
135	void configuration::cleanup()	172	configuration::cleanup ()
136	{	173	{
137	if (rsa_key)	174	if (rsa_key)
138	RSA_free (rsa_key);	175	RSA_free (rsa_key);
139		176
140	rsa_key = 0;	177	rsa_key = 0;
141		178
		179	free (seed_dev); seed_dev = 0;
142	free (pidfilename); pidfilename = 0;	180	free (pidfilename); pidfilename = 0;
143	free (ifname); ifname = 0;	181	free (ifname); ifname = 0;
144	#if ENABLE_HTTP_PROXY	182	#if ENABLE_HTTP_PROXY
145	free (proxy_host); proxy_host = 0;	183	free (proxy_host); proxy_host = 0;
146	free (proxy_auth); proxy_auth = 0;	184	free (proxy_auth); proxy_auth = 0;
147	#endif	185	#endif
148	#if ENABLE_DNS	186	#if ENABLE_DNS
149	free (dns_forw_host); dns_forw_host = 0;	187	free (dns_forw_host); dns_forw_host = 0;
150	#endif	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;
151	}	194	}
152		195
153	void	196	void
154	configuration::clear_config ()	197	configuration::clear ()
155	{	198	{
156	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)
157	delete *i;	200	delete *i;
158		201
159	nodes.clear ();	202	nodes.clear ();
160		203
161	cleanup ();	204	cleanup ();
162	init ();	205	init ();
163	}	206	}
164		207
		208	conf_node *
		209	configuration::find_node (const char *name)
		210	{
		211	for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i)
		212	if (!strcmp ((*i)->nodename, name))
		213	return *i;
		214
		215	return 0;
		216	}
		217
		218	//static bool
		219	//is_true (const char *name)
		220	//{
		221	//re
		222	//}
		223
165	#define parse_bool(target,name,trueval,falseval) \	224	#define parse_bool(target,name,trueval,falseval) do { \
166	if (!strcmp (val, "yes")) target = trueval; \	225	if (!strcmp (val, "yes")) target = trueval; \
167	else if (!strcmp (val, "no")) target = falseval; \	226	else if (!strcmp (val, "no")) target = falseval; \
168	else if (!strcmp (val, "true")) target = trueval; \	227	else if (!strcmp (val, "true")) target = trueval; \
169	else if (!strcmp (val, "false")) target = falseval; \	228	else if (!strcmp (val, "false")) target = falseval; \
170	else if (!strcmp (val, "on")) target = trueval; \	229	else if (!strcmp (val, "on")) target = trueval; \
171	else if (!strcmp (val, "off")) target = falseval; \	230	else if (!strcmp (val, "off")) target = falseval; \
172	else \	231	else \
173	slog (L_WARN, \
174	_("illegal value for '%s', only 'yes\|true\|on' or 'no\|false\|off' allowed, at '%s' line %d"), \	232	return _("illegal boolean value, only 'yes\|true\|on' or 'no\|false\|off' allowed, ignored"); \
175	name, var, fname, lineno);	233	} while (0)
176		234
177	void configuration::read_config (bool need_keys)	235	const char *
		236	configuration_parser::parse_line (char *line)
178	{	237	{
179	char *fname;	238	{
180	FILE *f;	239	char *end = line + strlen (line);
181		240
182	clear_config ();	241	while (*end < ' ' && end >= line)
		242	end--;
183		243
184	asprintf (&fname, "%s/gvpe.conf", confbase);	244	*++end = 0;
185	f = fopen (fname, "r");	245	}
186		246
187	if (f)	247	char *tok = line;
		248	const char *var = strtok (tok, "\t =");
		249	tok = 0;
		250
		251	if (!var \|\| !var[0])
		252	return 0; /* no tokens on this line */
		253
		254	if (var[0] == '#')
		255	return 0; /* comment: ignore */
		256
		257	if (!strcmp (var, "global"))
		258	{
		259	node = &conf.default_node;
		260	return 0;
188	{	261	}
		262
		263	char *val = strtok (NULL, "\t\n\r =");
		264
		265	if (!val \|\| val[0] == '#')
		266	return _("no value given for variable, ignored");
		267
		268	else if (!strcmp (var, "on"))
		269	{
		270	if (::thisnode
		271	&& ((val[0] == '!' && strcmp (val + 1, ::thisnode))
		272	\|\| !strcmp (val, ::thisnode)))
		273	return parse_line (strtok (NULL, "\n\r"));
		274	}
		275
		276	else if (!strcmp (var, "include"))
		277	{
		278	char *fname = conf.config_filename (val);
		279	parse_file (fname);
		280	free (fname);
		281	}
		282
		283	// truly global
		284	else if (!strcmp (var, "loglevel"))
		285	{
		286	loglevel l = string_to_loglevel (val);
		287
		288	if (l == L_NONE)
		289	return _("unknown loglevel, ignored");
		290	}
		291	else if (!strcmp (var, "serial"))
		292	strncpy (conf.serial, val, sizeof (conf.serial));
		293	else if (!strcmp (var, "ip-proto"))
		294	conf.ip_proto = atoi (val);
		295	else if (!strcmp (var, "icmp-type"))
		296	{
		297	#if ENABLE_ICMP
		298	conf.icmp_type = atoi (val);
		299	#endif
		300	}
		301	else if (!strcmp (var, "chuser"))
		302	{
		303	struct passwd *pw = getpwnam (val);
		304	if (!pw)
		305	return _("user specified for chuser not found");
		306
		307	conf.change_uid = pw->pw_uid;
		308	conf.change_gid = pw->pw_gid;
		309	}
		310	else if (!strcmp (var, "chuid"))
		311	conf.change_uid = atoi (val);
		312	else if (!strcmp (var, "chgid"))
		313	conf.change_gid = atoi (val);
		314	else if (!strcmp (var, "chroot"))
		315	free (conf.change_root), conf.change_root = strdup (val);
		316
		317	// per node
		318	else if (!strcmp (var, "node"))
		319	{
		320	node = conf.find_node (val);
		321
		322	if (!node)
		323	{
		324	conf.default_node.id++;
		325	node = new conf_node (conf.default_node);
		326	conf.nodes.push_back (node);
		327	node->nodename = strdup (val);
		328	}
		329	}
		330	else if (!strcmp (var, "private-key"))
		331	free (conf.prikeyfile), conf.prikeyfile = strdup (val);
		332	else if (!strcmp (var, "ifpersist"))
		333	parse_bool (conf.ifpersist, "ifpersist", true, false);
		334	else if (!strcmp (var, "ifname"))
		335	free (conf.ifname), conf.ifname = strdup (val);
		336	else if (!strcmp (var, "rekey"))
		337	conf.rekey = atoi (val);
		338	else if (!strcmp (var, "keepalive"))
		339	conf.keepalive = atoi (val);
		340	else if (!strcmp (var, "mtu"))
		341	conf.mtu = atoi (val);
		342	else if (!strcmp (var, "nfmark"))
		343	conf.nfmark = atoi (val);
		344	else if (!strcmp (var, "seed-device"))
		345	free (conf.seed_dev), conf.seed_dev = strdup (val);
		346	else if (!strcmp (var, "seed-interval"))
		347	conf.reseed = atoi (val);
		348	else if (!strcmp (var, "if-up"))
		349	free (conf.script_if_up), conf.script_if_up = strdup (val);
		350	else if (!strcmp (var, "node-up"))
		351	free (conf.script_node_up), conf.script_node_up = strdup (val);
		352	else if (!strcmp (var, "node-change"))
		353	free (conf.script_node_change), conf.script_node_change = strdup (val);
		354	else if (!strcmp (var, "node-down"))
		355	free (conf.script_node_down), conf.script_node_down = strdup (val);
		356	else if (!strcmp (var, "pid-file"))
		357	free (conf.pidfilename), conf.pidfilename = strdup (val);
		358	else if (!strcmp (var, "dns-forw-host"))
		359	{
		360	#if ENABLE_DNS
		361	free (conf.dns_forw_host), conf.dns_forw_host = strdup (val);
		362	#endif
		363	}
		364	else if (!strcmp (var, "dns-forw-port"))
		365	{
		366	#if ENABLE_DNS
		367	conf.dns_forw_port = atoi (val);
		368	#endif
		369	}
		370	else if (!strcmp (var, "dns-timeout-factor"))
		371	{
		372	#if ENABLE_DNS
		373	conf.dns_timeout_factor = atof (val);
		374	#endif
		375	}
		376	else if (!strcmp (var, "dns-send-interval"))
		377	{
		378	#if ENABLE_DNS
		379	conf.dns_send_interval = atoi (val);
		380	#endif
		381	}
		382	else if (!strcmp (var, "dns-overlap-factor"))
		383	{
		384	#if ENABLE_DNS
		385	conf.dns_overlap_factor = atof (val);
		386	#endif
		387	}
		388	else if (!strcmp (var, "dns-max-outstanding"))
		389	{
		390	#if ENABLE_DNS
		391	conf.dns_max_outstanding = atoi (val);
		392	#endif
		393	}
		394	else if (!strcmp (var, "dns-case-preserving"))
		395	{
		396	#if ENABLE_DNS
		397	parse_bool (conf.dns_case_preserving, "dns-case-preserving", true, false);
		398	#endif
		399	}
		400	else if (!strcmp (var, "http-proxy-host"))
		401	{
		402	#if ENABLE_HTTP_PROXY
		403	free (conf.proxy_host), conf.proxy_host = strdup (val);
		404	#endif
		405	}
		406	else if (!strcmp (var, "http-proxy-port"))
		407	{
		408	#if ENABLE_HTTP_PROXY
		409	conf.proxy_port = atoi (val);
		410	#endif
		411	}
		412	else if (!strcmp (var, "http-proxy-auth"))
		413	{
		414	#if ENABLE_HTTP_PROXY
		415	conf.proxy_auth = (char )base64_encode ((const u8 )val, strlen (val));
		416	#endif
		417	}
		418
		419	/* node-specific, non-defaultable */
		420	else if (node != &conf.default_node && !strcmp (var, "hostname"))
		421	free (node->hostname), node->hostname = strdup (val);
		422
		423	/* node-specific, defaultable */
		424	else if (!strcmp (var, "udp-port"))
		425	node->udp_port = atoi (val);
		426	else if (!strcmp (var, "tcp-port"))
		427	node->tcp_port = atoi (val);
		428	else if (!strcmp (var, "dns-hostname"))
		429	{
		430	#if ENABLE_DNS
		431	free (node->dns_hostname), node->dns_hostname = strdup (val);
		432	#endif
		433	}
		434	else if (!strcmp (var, "dns-port"))
		435	{
		436	#if ENABLE_DNS
		437	node->dns_port = atoi (val);
		438	#endif
		439	}
		440	else if (!strcmp (var, "dns-domain"))
		441	{
		442	#if ENABLE_DNS
		443	free (node->domain), node->domain = strdup (val);
		444	#endif
		445	}
		446	else if (!strcmp (var, "if-up-data"))
		447	free (node->if_up_data), node->if_up_data = strdup (val);
		448	else if (!strcmp (var, "router-priority"))
		449	node->routerprio = atoi (val);
		450	else if (!strcmp (var, "max-retry"))
		451	node->max_retry = atoi (val);
		452	else if (!strcmp (var, "connect"))
		453	{
		454	if (!strcmp (val, "ondemand"))
		455	node->connectmode = conf_node::C_ONDEMAND;
		456	else if (!strcmp (val, "never"))
		457	node->connectmode = conf_node::C_NEVER;
		458	else if (!strcmp (val, "always"))
		459	node->connectmode = conf_node::C_ALWAYS;
		460	else if (!strcmp (val, "disabled"))
		461	node->connectmode = conf_node::C_DISABLED;
		462	else
		463	return _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', ignored");
		464	}
		465	else if (!strcmp (var, "inherit-tos"))
		466	parse_bool (node->inherit_tos, "inherit-tos", true, false);
		467	else if (!strcmp (var, "compress"))
		468	parse_bool (node->compress, "compress", true, false);
		469	// all these bool options really really cost a lot of executable size!
		470	else if (!strcmp (var, "enable-tcp"))
		471	{
		472	#if ENABLE_TCP
		473	u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) \| v;
		474	#endif
		475	}
		476	else if (!strcmp (var, "enable-icmp"))
		477	{
		478	#if ENABLE_ICMP
		479	u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) \| v;
		480	#endif
		481	}
		482	else if (!strcmp (var, "enable-dns"))
		483	{
		484	#if ENABLE_DNS
		485	u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) \| v;
		486	#endif
		487	}
		488	else if (!strcmp (var, "enable-udp"))
		489	{
		490	u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) \| v;
		491	}
		492	else if (!strcmp (var, "enable-rawip"))
		493	{
		494	u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) \| v;
		495	}
		496	else if (!strcmp (var, "allow-direct"))
		497	node->allow_direct.push_back (strdup (val));
		498	else if (!strcmp (var, "deny-direct"))
		499	node->deny_direct.push_back (strdup (val));
		500	else if (!strcmp (var, "max-ttl"))
		501	node->max_ttl = atof (val);
		502	else if (!strcmp (var, "max-queue"))
		503	node->max_queue = atoi (val);
		504
		505	// unknown or misplaced
		506	else
		507	return _("unknown configuration directive - ignored");
		508
		509	return 0;
		510	}
		511
		512	void
		513	conf_node::finalise ()
		514	{
		515	if (max_queue < 1)
		516	{
		517	slog (L_WARN, _("%s: max-queue value invalid, setting it to 1."), nodename);
		518	max_queue = 1;
		519	}
		520
		521	if (routerprio > 1 && (connectmode != C_ALWAYS && connectmode != C_DISABLED))
		522	{
		523	//slog (L_WARN, _("%s: has non-zero router-priority but either 'never' or 'ondemand' as connectmode, setting it to 'always'."), nodename);
		524	connectmode = C_ALWAYS;
		525	}
		526	}
		527
		528	void
		529	configuration_parser::parse_file (const char *fname)
		530	{
		531	if (FILE *f = fopen (fname, "r"))
		532	{
189	char line[16384];	533	char line [2048];
190	int lineno = 0;	534	int lineno = 0;
191	char var, val;
192	conf_node *node = &default_node;
193		535
194	while (fgets (line, sizeof (line), f))	536	while (fgets (line, sizeof (line), f))
195	{	537	{
196	lineno++;	538	lineno++;
197		539
198	{	540	const char *warn = parse_line (line);
199	char *end = line + strlen (line);
200		541
201	while (*end < ' ' && end >= line)	542	if (warn)
202	end--;	543	slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno);
203
204	*++end = 0;
205	}
206
207	char *tok = line;
208
209	retry:
210	var = strtok (tok, "\t =");
211	tok = 0;
212
213	if (!var \|\| !var[0])
214	continue; /* no tokens on this line */
215
216	if (var[0] == '#')
217	continue; /* comment: ignore */
218
219	val = strtok (NULL, "\t\n\r =");
220
221	if (!val \|\| val[0] == '#')
222	{
223	slog (L_WARN,
224	_("no value for variable `%s', at '%s' line %d"),
225	var, fname, lineno);
226	break;
227	}
228
229	if (!strcmp (var, "on"))
230	{
231	if (!::thisnode
232	\|\| (val[0] == '!' && strcmp (val + 1, ::thisnode))
233	\|\| !strcmp (val, ::thisnode))
234	goto retry;
235
236	continue;
237	}
238
239	// truly global
240	if (!strcmp (var, "loglevel"))
241	{
242	loglevel l = string_to_loglevel (val);
243
244	if (l != L_NONE)
245	llevel = l;
246	else
247	slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
248	}
249	else if (!strcmp (var, "ip-proto"))
250	ip_proto = atoi (val);
251	else if (!strcmp (var, "icmp-type"))
252	{
253	#if ENABLE_ICMP
254	icmp_type = atoi (val);
255	#endif
256	}
257
258	// per config
259	else if (!strcmp (var, "node"))
260	{
261	default_node.id++;
262
263	node = new conf_node (default_node);
264
265	nodes.push_back (node);
266
267	node->nodename = strdup (val);
268
269	{
270	char *fname;
271	FILE *f;
272
273	asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
274
275	f = fopen (fname, "r");
276	if (f)
277	{
278	node->rsa_key = RSA_new ();
279
280	if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
281	{
282	ERR_load_RSA_strings (); ERR_load_PEM_strings ();
283	slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
284	exit (EXIT_FAILURE);
285	}
286
287	require (RSA_blinding_on (node->rsa_key, 0));
288
289	fclose (f);
290	}
291	else
292	{
293	slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
294
295	if (need_keys)
296	exit (EXIT_FAILURE);
297	}
298
299	free (fname);
300	}
301
302	if (::thisnode && !strcmp (node->nodename, ::thisnode))
303	thisnode = node;
304	}
305	else if (!strcmp (var, "private-key"))
306	free (prikeyfile), prikeyfile = strdup (val);
307	else if (!strcmp (var, "ifpersist"))
308	{
309	parse_bool (ifpersist, "ifpersist", true, false);
310	}
311	else if (!strcmp (var, "ifname"))
312	free (ifname), ifname = strdup (val);
313	else if (!strcmp (var, "rekey"))
314	rekey = atoi (val);
315	else if (!strcmp (var, "keepalive"))
316	keepalive = atoi (val);
317	else if (!strcmp (var, "mtu"))
318	mtu = atoi (val);
319	else if (!strcmp (var, "if-up"))
320	free (script_if_up), script_if_up = strdup (val);
321	else if (!strcmp (var, "node-up"))
322	free (script_node_up), script_node_up = strdup (val);
323	else if (!strcmp (var, "node-down"))
324	free (script_node_down), script_node_down = strdup (val);
325	else if (!strcmp (var, "pid-file"))
326	free (pidfilename), pidfilename = strdup (val);
327	#if ENABLE_DNS
328	else if (!strcmp (var, "dns-forw-host"))
329	free (dns_forw_host), dns_forw_host = strdup (val);
330	else if (!strcmp (var, "dns-forw-port"))
331	dns_forw_port = atoi (val);
332	#endif
333	else if (!strcmp (var, "http-proxy-host"))
334	{
335	#if ENABLE_HTTP_PROXY
336	free (proxy_host), proxy_host = strdup (val);
337	#endif
338	}
339	else if (!strcmp (var, "http-proxy-port"))
340	{
341	#if ENABLE_HTTP_PROXY
342	proxy_port = atoi (val);
343	#endif
344	}
345	else if (!strcmp (var, "http-proxy-auth"))
346	{
347	#if ENABLE_HTTP_PROXY
348	proxy_auth = (char )base64_encode ((const u8 )val, strlen (val));
349	#endif
350	}
351
352	/* node-specific, non-defaultable */
353	else if (node != &default_node && !strcmp (var, "hostname"))
354	free (node->hostname), node->hostname = strdup (val);
355
356	/* node-specific, defaultable */
357	else if (!strcmp (var, "udp-port"))
358	node->udp_port = atoi (val);
359	else if (!strcmp (var, "tcp-port"))
360	node->tcp_port = atoi (val);
361	#if ENABLE_DNS
362	else if (!strcmp (var, "dns-hostname"))
363	free (node->dns_hostname), node->dns_hostname = strdup (val);
364	else if (!strcmp (var, "dns-port"))
365	node->dns_port = atoi (val);
366	else if (!strcmp (var, "dns-domain"))
367	free (node->domain), node->domain = strdup (val);
368	#endif
369	else if (!strcmp (var, "router-priority"))
370	node->routerprio = atoi (val);
371	else if (!strcmp (var, "max-retry"))
372	node->max_retry = atoi (val);
373	else if (!strcmp (var, "connect"))
374	{
375	if (!strcmp (val, "ondemand"))
376	node->connectmode = conf_node::C_ONDEMAND;
377	else if (!strcmp (val, "never"))
378	node->connectmode = conf_node::C_NEVER;
379	else if (!strcmp (val, "always"))
380	node->connectmode = conf_node::C_ALWAYS;
381	else if (!strcmp (val, "disabled"))
382	node->connectmode = conf_node::C_DISABLED;
383	else
384	slog (L_WARN,
385	_("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
386	var, fname, lineno);
387	}
388	else if (!strcmp (var, "inherit-tos"))
389	{
390	parse_bool (node->inherit_tos, "inherit-tos", true, false);
391	}
392	else if (!strcmp (var, "compress"))
393	{
394	parse_bool (node->compress, "compress", true, false);
395	}
396	// all these bool options really really cost a lot of executable size!
397	else if (!strcmp (var, "enable-tcp"))
398	{
399	#if ENABLE_TCP
400	u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) \| v;
401	#endif
402	}
403	else if (!strcmp (var, "enable-icmp"))
404	{
405	#if ENABLE_ICMP
406	u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) \| v;
407	#endif
408	}
409	else if (!strcmp (var, "enable-dns"))
410	{
411	#if ENABLE_DNS
412	u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) \| v;
413	#endif
414	}
415	else if (!strcmp (var, "enable-udp"))
416	{
417	u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) \| v;
418	}
419	else if (!strcmp (var, "enable-rawip"))
420	{
421	u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) \| v;
422	}
423
424	// unknown or misplaced
425	else
426	slog (L_WARN,
427	_("unknown or misplaced variable `%s', at '%s' line %d"),
428	var, fname, lineno);
429	}	544	}
430		545
431	fclose (f);	546	fclose (f);
432	}	547	}
433	else	548	else
434	{	549	{
435	slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));	550	slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
436	exit (EXIT_FAILURE);	551	exit (EXIT_FAILURE);
437	}	552	}
		553	}
438		554
		555	configuration_parser::configuration_parser (configuration &conf,
		556	bool need_keys,
		557	int argc,
		558	char **argv)
		559	: conf (conf), need_keys (need_keys), argc (argc), argv (argv)
		560	{
		561	char *fname;
		562
		563	conf.clear ();
		564	node = &conf.default_node;
		565
		566	asprintf (&fname, "%s/gvpe.conf", confbase);
		567	parse_file (fname);
439	free (fname);	568	free (fname);
440		569
441	fname = config_filename (prikeyfile, "hostkey");	570	fname = conf.config_filename (conf.prikeyfile, "hostkey");
442		571
443	f = fopen (fname, "r");	572	if (FILE *f = fopen (fname, "r"))
444	if (f)
445	{	573	{
446	rsa_key = RSA_new ();	574	conf.rsa_key = RSA_new ();
447		575
448	if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))	576	if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL))
449	{	577	{
450	ERR_load_RSA_strings (); ERR_load_PEM_strings ();	578	ERR_load_RSA_strings (); ERR_load_PEM_strings ();
451	slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));	579	slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
452	exit (EXIT_FAILURE);	580	exit (EXIT_FAILURE);
453	}	581	}
454		582
455	require (RSA_blinding_on (rsa_key, 0));	583	require (RSA_blinding_on (conf.rsa_key, 0));
456		584
457	fclose (f);	585	fclose (f);
458	}	586	}
459	else	587	else
460	{	588	{
461	slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
462
463	if (need_keys)	589	if (need_keys)
		590	{
		591	slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
464	exit (EXIT_FAILURE);	592	exit (EXIT_FAILURE);
465	}
466
467	if (need_keys && ::thisnode
468	&& rsa_key && thisnode && thisnode->rsa_key)
469	if (BN_cmp (rsa_key->n, thisnode->rsa_key->n) != 0
470	\|\| BN_cmp (rsa_key->e, thisnode->rsa_key->e) != 0)
471	{
472	slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
473	exit (EXIT_FAILURE);
474	}	593	}
		594	}
475		595
476	free (fname);	596	free (fname);
477	}
478		597
		598	fname = conf.config_filename (conf.pidfilename);
		599	free (conf.pidfilename); conf.pidfilename = fname;
		600
		601	for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i)
		602	{
		603	conf_node node = i;
		604	char *fname;
		605	FILE *f;
		606
		607	asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
		608
		609	f = fopen (fname, "r");
		610	if (f)
		611	{
		612	node->rsa_key = RSA_new ();
		613
		614	if (!PEM_read_RSAPublicKey (f, &node->rsa_key, NULL, NULL))
		615	{
		616	ERR_load_RSA_strings (); ERR_load_PEM_strings ();
		617	slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
		618	exit (EXIT_FAILURE);
		619	}
		620
		621	require (RSA_blinding_on (node->rsa_key, 0));
		622
		623	fclose (f);
		624	}
		625	else
		626	{
		627	slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
		628
		629	if (need_keys)
		630	exit (EXIT_FAILURE);
		631	}
		632
		633	free (fname);
		634
		635	(*i)->finalise ();
		636	}
		637
		638	if (::thisnode)
		639	{
		640	conf.thisnode = conf.find_node (::thisnode);
		641
		642	if (need_keys)
		643	{
		644	if (!conf.thisnode)
		645	{
		646	slog (L_NOTICE, _("local node ('%s') not found in config file, aborting."), ::thisnode);
		647	exit (EXIT_FAILURE);
		648	}
		649
		650	if (conf.rsa_key && conf.thisnode->rsa_key)
		651	if (BN_cmp (conf.rsa_key->n, conf.thisnode->rsa_key->n) != 0
		652	\|\| BN_cmp (conf.rsa_key->e, conf.thisnode->rsa_key->e) != 0)
		653	{
		654	slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
		655	exit (EXIT_FAILURE);
		656	}
		657	}
		658	}
		659
		660	parse_argv ();
		661	}
		662
		663	void
		664	configuration_parser::parse_argv ()
		665	{
		666	for (int i = 0; i < argc; ++i)
		667	{
		668	char *v = argv [i];
		669
		670	if (!*v)
		671	continue;
		672
		673	char *enode = v;
		674
		675	while (enode != '.' && enode > ' ' && enode != '=' && enode)
		676	enode++;
		677
		678	if (*enode != '.')
		679	enode = 0;
		680
		681	if (enode)
		682	{
		683	char *val = strdup (v);
		684	val [enode - v] = 0;
		685	node = conf.find_node (val);
		686	free (val);
		687
		688	if (!node)
		689	{
		690	slog (L_WARN, _("command line option '%s' refers to unknown node, ignoring."), v);
		691	continue;
		692	}
		693	}
		694	else
		695	node = &conf.default_node;
		696
		697	const char *warn = parse_line (enode ? enode + 1 : v);
		698
		699	if (warn)
		700	slog (L_WARN, _("%s, while parsing command line option '%s'."), warn, v);
		701	}
		702	}
		703
		704	char *
479	char configuration::config_filename (const char name, const char *dflt)	705	configuration::config_filename (const char name, const char dflt)
480	{	706	{
481	char *fname;	707	char *fname;
482		708
483	asprintf (&fname, name ? name : dflt, ::thisnode);	709	asprintf (&fname, name ? name : dflt, ::thisnode ? ::thisnode : "<unset>");
484		710
485	if (!ABSOLUTE_PATH (fname))	711	if (!ABSOLUTE_PATH (fname))
486	{	712	{
487	char *rname = fname;	713	char *rname = fname;
488	asprintf (&fname, "%s/%s", confbase, rname);	714	asprintf (&fname, "%s/%s", confbase, rname);
489	free (rname);	715	free (rname);
490	}	716	}
491		717
492	return fname;	718	return fname;
		719	}
		720
		721	void
		722	conf_node::print ()
		723	{
		724	printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %02x %s%s%d\n",
		725	id,
		726	id >> 8, id & 0xff,
		727	compress ? 'Y' : 'N',
		728	connectmode == C_ONDEMAND ? "ondemand"
		729	: connectmode == C_NEVER ? "never"
		730	: connectmode == C_ALWAYS ? "always"
		731	: connectmode == C_DISABLED ? "disabled"
		732	: "",
		733	nodename,
		734	protocols,
		735	hostname ? hostname : "",
		736	hostname ? ":" : "",
		737	hostname ? udp_port : 0
		738	);
493	}	739	}
494		740
495	void	741	void
496	configuration::print ()	742	configuration::print ()
497	{	743	{
…		…
504	printf (_("interface: %s\n"), ifname);	750	printf (_("interface: %s\n"), ifname);
505	printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");	751	printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
506	printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);	752	printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
507	printf ("\n");	753	printf ("\n");
508		754
509	printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",	755	printf ("%4s %-17s %s %-8.8s %-10.10s %04s %s\n",
510	_("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));	756	_("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Prot"), _("Host:Port"));
511		757
512	for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)	758	for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
513	(*i)->print ();	759	(*i)->print ();
514		760
515	printf ("\n");	761	printf ("\n");
…		…
525	configuration::~configuration ()	771	configuration::~configuration ()
526	{	772	{
527	cleanup ();	773	cleanup ();
528	}	774	}
529		775
530

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Comparing gvpe/src/conf.C (file contents): Revision 1.33 by pcg, Sun Mar 6 18:34:46 2005 UTC vs. Revision 1.64 by root, Thu Jul 18 17:35:10 2013 UTC

Diff Legend

Comparing gvpe/src/conf.C (file contents):
Revision 1.33 by pcg, Sun Mar 6 18:34:46 2005 UTC vs.
Revision 1.64 by root, Thu Jul 18 17:35:10 2013 UTC