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

Comparing gvpe/src/conf.C (file contents):
Revision 1.34 by pcg, Thu Mar 17 23:59:37 2005 UTC vs.
Revision 1.63 by root, Thu Jul 18 13:35:16 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, "ip-proto"))
		292	conf.ip_proto = atoi (val);
		293	else if (!strcmp (var, "icmp-type"))
		294	{
		295	#if ENABLE_ICMP
		296	conf.icmp_type = atoi (val);
		297	#endif
		298	}
		299	else if (!strcmp (var, "chuser"))
		300	{
		301	struct passwd *pw = getpwnam (val);
		302	if (!pw)
		303	return _("user specified for chuser not found");
		304
		305	conf.change_uid = pw->pw_uid;
		306	conf.change_gid = pw->pw_gid;
		307	}
		308	else if (!strcmp (var, "chuid"))
		309	conf.change_uid = atoi (val);
		310	else if (!strcmp (var, "chgid"))
		311	conf.change_gid = atoi (val);
		312	else if (!strcmp (var, "chroot"))
		313	free (conf.change_root), conf.change_root = strdup (val);
		314
		315	// per node
		316	else if (!strcmp (var, "node"))
		317	{
		318	node = conf.find_node (val);
		319
		320	if (!node)
		321	{
		322	conf.default_node.id++;
		323	node = new conf_node (conf.default_node);
		324	conf.nodes.push_back (node);
		325	node->nodename = strdup (val);
		326	}
		327	}
		328	else if (!strcmp (var, "private-key"))
		329	free (conf.prikeyfile), conf.prikeyfile = strdup (val);
		330	else if (!strcmp (var, "ifpersist"))
		331	parse_bool (conf.ifpersist, "ifpersist", true, false);
		332	else if (!strcmp (var, "ifname"))
		333	free (conf.ifname), conf.ifname = strdup (val);
		334	else if (!strcmp (var, "rekey"))
		335	conf.rekey = atoi (val);
		336	else if (!strcmp (var, "keepalive"))
		337	conf.keepalive = atoi (val);
		338	else if (!strcmp (var, "mtu"))
		339	conf.mtu = atoi (val);
		340	else if (!strcmp (var, "nfmark"))
		341	conf.nfmark = atoi (val);
		342	else if (!strcmp (var, "seed-device"))
		343	free (conf.seed_dev), conf.seed_dev = strdup (val);
		344	else if (!strcmp (var, "seed-interval"))
		345	conf.reseed = atoi (val);
		346	else if (!strcmp (var, "if-up"))
		347	free (conf.script_if_up), conf.script_if_up = strdup (val);
		348	else if (!strcmp (var, "node-up"))
		349	free (conf.script_node_up), conf.script_node_up = strdup (val);
		350	else if (!strcmp (var, "node-change"))
		351	free (conf.script_node_change), conf.script_node_change = strdup (val);
		352	else if (!strcmp (var, "node-down"))
		353	free (conf.script_node_down), conf.script_node_down = strdup (val);
		354	else if (!strcmp (var, "pid-file"))
		355	free (conf.pidfilename), conf.pidfilename = strdup (val);
		356	else if (!strcmp (var, "dns-forw-host"))
		357	{
		358	#if ENABLE_DNS
		359	free (conf.dns_forw_host), conf.dns_forw_host = strdup (val);
		360	#endif
		361	}
		362	else if (!strcmp (var, "dns-forw-port"))
		363	{
		364	#if ENABLE_DNS
		365	conf.dns_forw_port = atoi (val);
		366	#endif
		367	}
		368	else if (!strcmp (var, "dns-timeout-factor"))
		369	{
		370	#if ENABLE_DNS
		371	conf.dns_timeout_factor = atof (val);
		372	#endif
		373	}
		374	else if (!strcmp (var, "dns-send-interval"))
		375	{
		376	#if ENABLE_DNS
		377	conf.dns_send_interval = atoi (val);
		378	#endif
		379	}
		380	else if (!strcmp (var, "dns-overlap-factor"))
		381	{
		382	#if ENABLE_DNS
		383	conf.dns_overlap_factor = atof (val);
		384	#endif
		385	}
		386	else if (!strcmp (var, "dns-max-outstanding"))
		387	{
		388	#if ENABLE_DNS
		389	conf.dns_max_outstanding = atoi (val);
		390	#endif
		391	}
		392	else if (!strcmp (var, "dns-case-preserving"))
		393	{
		394	#if ENABLE_DNS
		395	parse_bool (conf.dns_case_preserving, "dns-case-preserving", true, false);
		396	#endif
		397	}
		398	else if (!strcmp (var, "http-proxy-host"))
		399	{
		400	#if ENABLE_HTTP_PROXY
		401	free (conf.proxy_host), conf.proxy_host = strdup (val);
		402	#endif
		403	}
		404	else if (!strcmp (var, "http-proxy-port"))
		405	{
		406	#if ENABLE_HTTP_PROXY
		407	conf.proxy_port = atoi (val);
		408	#endif
		409	}
		410	else if (!strcmp (var, "http-proxy-auth"))
		411	{
		412	#if ENABLE_HTTP_PROXY
		413	conf.proxy_auth = (char )base64_encode ((const u8 )val, strlen (val));
		414	#endif
		415	}
		416
		417	/* node-specific, non-defaultable */
		418	else if (node != &conf.default_node && !strcmp (var, "hostname"))
		419	free (node->hostname), node->hostname = strdup (val);
		420
		421	/* node-specific, defaultable */
		422	else if (!strcmp (var, "udp-port"))
		423	node->udp_port = atoi (val);
		424	else if (!strcmp (var, "tcp-port"))
		425	node->tcp_port = atoi (val);
		426	else if (!strcmp (var, "dns-hostname"))
		427	{
		428	#if ENABLE_DNS
		429	free (node->dns_hostname), node->dns_hostname = strdup (val);
		430	#endif
		431	}
		432	else if (!strcmp (var, "dns-port"))
		433	{
		434	#if ENABLE_DNS
		435	node->dns_port = atoi (val);
		436	#endif
		437	}
		438	else if (!strcmp (var, "dns-domain"))
		439	{
		440	#if ENABLE_DNS
		441	free (node->domain), node->domain = strdup (val);
		442	#endif
		443	}
		444	else if (!strcmp (var, "if-up-data"))
		445	free (node->if_up_data), node->if_up_data = strdup (val);
		446	else if (!strcmp (var, "router-priority"))
		447	node->routerprio = atoi (val);
		448	else if (!strcmp (var, "max-retry"))
		449	node->max_retry = atoi (val);
		450	else if (!strcmp (var, "connect"))
		451	{
		452	if (!strcmp (val, "ondemand"))
		453	node->connectmode = conf_node::C_ONDEMAND;
		454	else if (!strcmp (val, "never"))
		455	node->connectmode = conf_node::C_NEVER;
		456	else if (!strcmp (val, "always"))
		457	node->connectmode = conf_node::C_ALWAYS;
		458	else if (!strcmp (val, "disabled"))
		459	node->connectmode = conf_node::C_DISABLED;
		460	else
		461	return _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', ignored");
		462	}
		463	else if (!strcmp (var, "inherit-tos"))
		464	parse_bool (node->inherit_tos, "inherit-tos", true, false);
		465	else if (!strcmp (var, "compress"))
		466	parse_bool (node->compress, "compress", true, false);
		467	// all these bool options really really cost a lot of executable size!
		468	else if (!strcmp (var, "enable-tcp"))
		469	{
		470	#if ENABLE_TCP
		471	u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) \| v;
		472	#endif
		473	}
		474	else if (!strcmp (var, "enable-icmp"))
		475	{
		476	#if ENABLE_ICMP
		477	u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) \| v;
		478	#endif
		479	}
		480	else if (!strcmp (var, "enable-dns"))
		481	{
		482	#if ENABLE_DNS
		483	u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) \| v;
		484	#endif
		485	}
		486	else if (!strcmp (var, "enable-udp"))
		487	{
		488	u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) \| v;
		489	}
		490	else if (!strcmp (var, "enable-rawip"))
		491	{
		492	u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) \| v;
		493	}
		494	else if (!strcmp (var, "allow-direct"))
		495	node->allow_direct.push_back (strdup (val));
		496	else if (!strcmp (var, "deny-direct"))
		497	node->deny_direct.push_back (strdup (val));
		498	else if (!strcmp (var, "max-ttl"))
		499	node->max_ttl = atof (val);
		500	else if (!strcmp (var, "max-queue"))
		501	node->max_queue = atoi (val);
		502
		503	// unknown or misplaced
		504	else
		505	return _("unknown configuration directive - ignored");
		506
		507	return 0;
		508	}
		509
		510	void
		511	conf_node::finalise ()
		512	{
		513	if (max_queue < 1)
		514	{
		515	slog (L_WARN, _("%s: max-queue value invalid, setting it to 1."), nodename);
		516	max_queue = 1;
		517	}
		518
		519	if (routerprio > 1 && (connectmode != C_ALWAYS && connectmode != C_DISABLED))
		520	{
		521	//slog (L_WARN, _("%s: has non-zero router-priority but either 'never' or 'ondemand' as connectmode, setting it to 'always'."), nodename);
		522	connectmode = C_ALWAYS;
		523	}
		524	}
		525
		526	void
		527	configuration_parser::parse_file (const char *fname)
		528	{
		529	if (FILE *f = fopen (fname, "r"))
		530	{
189	char line[16384];	531	char line [2048];
190	int lineno = 0;	532	int lineno = 0;
191	char var, val;
192	conf_node *node = &default_node;
193		533
194	while (fgets (line, sizeof (line), f))	534	while (fgets (line, sizeof (line), f))
195	{	535	{
196	lineno++;	536	lineno++;
197		537
198	{	538	const char *warn = parse_line (line);
199	char *end = line + strlen (line);
200		539
201	while (*end < ' ' && end >= line)	540	if (warn)
202	end--;	541	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	else if (!strcmp (var, "dns-forw-host"))
328	{
329	#if ENABLE_DNS
330	free (dns_forw_host), dns_forw_host = strdup (val);
331	#endif
332	}
333	else if (!strcmp (var, "dns-forw-port"))
334	{
335	#if ENABLE_DNS
336	dns_forw_port = atoi (val);
337	#endif
338	}
339	else if (!strcmp (var, "http-proxy-host"))
340	{
341	#if ENABLE_HTTP_PROXY
342	free (proxy_host), proxy_host = strdup (val);
343	#endif
344	}
345	else if (!strcmp (var, "http-proxy-port"))
346	{
347	#if ENABLE_HTTP_PROXY
348	proxy_port = atoi (val);
349	#endif
350	}
351	else if (!strcmp (var, "http-proxy-auth"))
352	{
353	#if ENABLE_HTTP_PROXY
354	proxy_auth = (char )base64_encode ((const u8 )val, strlen (val));
355	#endif
356	}
357
358	/* node-specific, non-defaultable */
359	else if (node != &default_node && !strcmp (var, "hostname"))
360	free (node->hostname), node->hostname = strdup (val);
361
362	/* node-specific, defaultable */
363	else if (!strcmp (var, "udp-port"))
364	node->udp_port = atoi (val);
365	else if (!strcmp (var, "tcp-port"))
366	node->tcp_port = atoi (val);
367	else if (!strcmp (var, "dns-hostname"))
368	{
369	#if ENABLE_DNS
370	free (node->dns_hostname), node->dns_hostname = strdup (val);
371	#endif
372	}
373	else if (!strcmp (var, "dns-port"))
374	{
375	#if ENABLE_DNS
376	node->dns_port = atoi (val);
377	#endif
378	}
379	else if (!strcmp (var, "dns-domain"))
380	{
381	#if ENABLE_DNS
382	free (node->domain), node->domain = strdup (val);
383	#endif
384	}
385	else if (!strcmp (var, "router-priority"))
386	node->routerprio = atoi (val);
387	else if (!strcmp (var, "max-retry"))
388	node->max_retry = atoi (val);
389	else if (!strcmp (var, "connect"))
390	{
391	if (!strcmp (val, "ondemand"))
392	node->connectmode = conf_node::C_ONDEMAND;
393	else if (!strcmp (val, "never"))
394	node->connectmode = conf_node::C_NEVER;
395	else if (!strcmp (val, "always"))
396	node->connectmode = conf_node::C_ALWAYS;
397	else if (!strcmp (val, "disabled"))
398	node->connectmode = conf_node::C_DISABLED;
399	else
400	slog (L_WARN,
401	_("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
402	var, fname, lineno);
403	}
404	else if (!strcmp (var, "inherit-tos"))
405	{
406	parse_bool (node->inherit_tos, "inherit-tos", true, false);
407	}
408	else if (!strcmp (var, "compress"))
409	{
410	parse_bool (node->compress, "compress", true, false);
411	}
412	// all these bool options really really cost a lot of executable size!
413	else if (!strcmp (var, "enable-tcp"))
414	{
415	#if ENABLE_TCP
416	u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) \| v;
417	#endif
418	}
419	else if (!strcmp (var, "enable-icmp"))
420	{
421	#if ENABLE_ICMP
422	u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) \| v;
423	#endif
424	}
425	else if (!strcmp (var, "enable-dns"))
426	{
427	#if ENABLE_DNS
428	u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) \| v;
429	#endif
430	}
431	else if (!strcmp (var, "enable-udp"))
432	{
433	u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) \| v;
434	}
435	else if (!strcmp (var, "enable-rawip"))
436	{
437	u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) \| v;
438	}
439
440	// unknown or misplaced
441	else
442	slog (L_WARN,
443	_("unknown or misplaced variable `%s', at '%s' line %d"),
444	var, fname, lineno);
445	}	542	}
446		543
447	fclose (f);	544	fclose (f);
448	}	545	}
449	else	546	else
450	{	547	{
451	slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));	548	slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
452	exit (EXIT_FAILURE);	549	exit (EXIT_FAILURE);
453	}	550	}
		551	}
454		552
		553	configuration_parser::configuration_parser (configuration &conf,
		554	bool need_keys,
		555	int argc,
		556	char **argv)
		557	: conf (conf), need_keys (need_keys), argc (argc), argv (argv)
		558	{
		559	char *fname;
		560
		561	conf.clear ();
		562	node = &conf.default_node;
		563
		564	asprintf (&fname, "%s/gvpe.conf", confbase);
		565	parse_file (fname);
455	free (fname);	566	free (fname);
456		567
457	fname = config_filename (prikeyfile, "hostkey");	568	fname = conf.config_filename (conf.prikeyfile, "hostkey");
458		569
459	f = fopen (fname, "r");	570	if (FILE *f = fopen (fname, "r"))
460	if (f)
461	{	571	{
462	rsa_key = RSA_new ();	572	conf.rsa_key = RSA_new ();
463		573
464	if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))	574	if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL))
465	{	575	{
466	ERR_load_RSA_strings (); ERR_load_PEM_strings ();	576	ERR_load_RSA_strings (); ERR_load_PEM_strings ();
467	slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));	577	slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
468	exit (EXIT_FAILURE);	578	exit (EXIT_FAILURE);
469	}	579	}
470		580
471	require (RSA_blinding_on (rsa_key, 0));	581	require (RSA_blinding_on (conf.rsa_key, 0));
472		582
473	fclose (f);	583	fclose (f);
474	}	584	}
475	else	585	else
476	{	586	{
477	slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
478
479	if (need_keys)	587	if (need_keys)
		588	{
		589	slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
480	exit (EXIT_FAILURE);	590	exit (EXIT_FAILURE);
481	}
482
483	if (need_keys && ::thisnode
484	&& rsa_key && thisnode && thisnode->rsa_key)
485	if (BN_cmp (rsa_key->n, thisnode->rsa_key->n) != 0
486	\|\| BN_cmp (rsa_key->e, thisnode->rsa_key->e) != 0)
487	{
488	slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
489	exit (EXIT_FAILURE);
490	}	591	}
		592	}
491		593
492	free (fname);	594	free (fname);
493	}
494		595
		596	fname = conf.config_filename (conf.pidfilename);
		597	free (conf.pidfilename); conf.pidfilename = fname;
		598
		599	for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i)
		600	{
		601	conf_node node = i;
		602	char *fname;
		603	FILE *f;
		604
		605	asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
		606
		607	f = fopen (fname, "r");
		608	if (f)
		609	{
		610	node->rsa_key = RSA_new ();
		611
		612	if (!PEM_read_RSAPublicKey (f, &node->rsa_key, NULL, NULL))
		613	{
		614	ERR_load_RSA_strings (); ERR_load_PEM_strings ();
		615	slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
		616	exit (EXIT_FAILURE);
		617	}
		618
		619	require (RSA_blinding_on (node->rsa_key, 0));
		620
		621	fclose (f);
		622	}
		623	else
		624	{
		625	slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
		626
		627	if (need_keys)
		628	exit (EXIT_FAILURE);
		629	}
		630
		631	free (fname);
		632
		633	(*i)->finalise ();
		634	}
		635
		636	if (::thisnode)
		637	{
		638	conf.thisnode = conf.find_node (::thisnode);
		639
		640	if (need_keys)
		641	{
		642	if (!conf.thisnode)
		643	{
		644	slog (L_NOTICE, _("local node ('%s') not found in config file, aborting."), ::thisnode);
		645	exit (EXIT_FAILURE);
		646	}
		647
		648	if (conf.rsa_key && conf.thisnode->rsa_key)
		649	if (BN_cmp (conf.rsa_key->n, conf.thisnode->rsa_key->n) != 0
		650	\|\| BN_cmp (conf.rsa_key->e, conf.thisnode->rsa_key->e) != 0)
		651	{
		652	slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
		653	exit (EXIT_FAILURE);
		654	}
		655	}
		656	}
		657
		658	parse_argv ();
		659	}
		660
		661	void
		662	configuration_parser::parse_argv ()
		663	{
		664	for (int i = 0; i < argc; ++i)
		665	{
		666	char *v = argv [i];
		667
		668	if (!*v)
		669	continue;
		670
		671	char *enode = v;
		672
		673	while (enode != '.' && enode > ' ' && enode != '=' && enode)
		674	enode++;
		675
		676	if (*enode != '.')
		677	enode = 0;
		678
		679	if (enode)
		680	{
		681	char *val = strdup (v);
		682	val [enode - v] = 0;
		683	node = conf.find_node (val);
		684	free (val);
		685
		686	if (!node)
		687	{
		688	slog (L_WARN, _("command line option '%s' refers to unknown node, ignoring."), v);
		689	continue;
		690	}
		691	}
		692	else
		693	node = &conf.default_node;
		694
		695	const char *warn = parse_line (enode ? enode + 1 : v);
		696
		697	if (warn)
		698	slog (L_WARN, _("%s, while parsing command line option '%s'."), warn, v);
		699	}
		700	}
		701
		702	char *
495	char configuration::config_filename (const char name, const char *dflt)	703	configuration::config_filename (const char name, const char dflt)
496	{	704	{
497	char *fname;	705	char *fname;
498		706
499	asprintf (&fname, name ? name : dflt, ::thisnode);	707	asprintf (&fname, name ? name : dflt, ::thisnode ? ::thisnode : "<unset>");
500		708
501	if (!ABSOLUTE_PATH (fname))	709	if (!ABSOLUTE_PATH (fname))
502	{	710	{
503	char *rname = fname;	711	char *rname = fname;
504	asprintf (&fname, "%s/%s", confbase, rname);	712	asprintf (&fname, "%s/%s", confbase, rname);
505	free (rname);	713	free (rname);
506	}	714	}
507		715
508	return fname;	716	return fname;
		717	}
		718
		719	void
		720	conf_node::print ()
		721	{
		722	printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %02x %s%s%d\n",
		723	id,
		724	id >> 8, id & 0xff,
		725	compress ? 'Y' : 'N',
		726	connectmode == C_ONDEMAND ? "ondemand"
		727	: connectmode == C_NEVER ? "never"
		728	: connectmode == C_ALWAYS ? "always"
		729	: connectmode == C_DISABLED ? "disabled"
		730	: "",
		731	nodename,
		732	protocols,
		733	hostname ? hostname : "",
		734	hostname ? ":" : "",
		735	hostname ? udp_port : 0
		736	);
509	}	737	}
510		738
511	void	739	void
512	configuration::print ()	740	configuration::print ()
513	{	741	{
…		…
520	printf (_("interface: %s\n"), ifname);	748	printf (_("interface: %s\n"), ifname);
521	printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");	749	printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
522	printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);	750	printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
523	printf ("\n");	751	printf ("\n");
524		752
525	printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",	753	printf ("%4s %-17s %s %-8.8s %-10.10s %04s %s\n",
526	_("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));	754	_("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Prot"), _("Host:Port"));
527		755
528	for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)	756	for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
529	(*i)->print ();	757	(*i)->print ();
530		758
531	printf ("\n");	759	printf ("\n");
…		…
541	configuration::~configuration ()	769	configuration::~configuration ()
542	{	770	{
543	cleanup ();	771	cleanup ();
544	}	772	}
545		773
546

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Comparing gvpe/src/conf.C (file contents): Revision 1.34 by pcg, Thu Mar 17 23:59:37 2005 UTC vs. Revision 1.63 by root, Thu Jul 18 13:35:16 2013 UTC

Diff Legend

Comparing gvpe/src/conf.C (file contents):
Revision 1.34 by pcg, Thu Mar 17 23:59:37 2005 UTC vs.
Revision 1.63 by root, Thu Jul 18 13:35:16 2013 UTC