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

Comparing gvpe/src/conf.C (file contents):
Revision 1.21 by pcg, Sat Jan 17 01:18:36 2004 UTC vs.
Revision 1.67 by root, Thu Oct 25 04:32:27 2018 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) 2003-2008,2011,2018 Marc Lehmann <gvpe@schmorp.de>
4		4
		5	This file is part of GVPE.
		6
5	This program is free software; you can redistribute it and/or modify	7	GVPE is free software; you can redistribute it and/or modify it
6	it under the terms of the GNU General Public License as published by	8	under the terms of the GNU General Public License as published by the
7	the Free Software Foundation; either version 2 of the License, or	9	Free Software Foundation; either version 3 of the License, or (at your
8	(at your option) any later version.	10	option) any later version.
9		11
10	This program is distributed in the hope that it will be useful,	12	This program is distributed in the hope that it will be useful, but
11	but WITHOUT ANY WARRANTY; without even the implied warranty of	13	WITHOUT ANY WARRANTY; without even the implied warranty of
12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
13	GNU General Public License for more details.	15	Public License for more details.
14		16
15	You should have received a copy of the GNU General Public License	17	You should have received a copy of the GNU General Public License along
16	along with this program; if not, write to the Free Software	18	with this program; if not, see <http://www.gnu.org/licenses/>.
17	Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA	19
		20	Additional permission under GNU GPL version 3 section 7
		21
		22	If you modify this Program, or any covered work, by linking or
		23	combining it with the OpenSSL project's OpenSSL library (or a modified
		24	version of that library), containing parts covered by the terms of the
		25	OpenSSL or SSLeay licenses, the licensors of this Program grant you
		26	additional permission to convey the resulting work. Corresponding
		27	Source for a non-source form of such a combination shall include the
		28	source code for the parts of OpenSSL used as well as that of the
		29	covered work.
18	*/	30	*/
19		31
20	#include "config.h"	32	#include "config.h"
21		33
22	#include <cstdio>	34	#include <cstdio>
26	#include <errno.h>	38	#include <errno.h>
27	#include <netdb.h>	39	#include <netdb.h>
28	#include <sys/stat.h>	40	#include <sys/stat.h>
29	#include <sys/types.h>	41	#include <sys/types.h>
30	#include <unistd.h>	42	#include <unistd.h>
		43	#include <pwd.h>
31		44
32	#include "netcompat.h"	45	#include "netcompat.h"
33		46
34	#include <openssl/err.h>	47	#include <openssl/err.h>
35	#include <openssl/pem.h>	48	#include <openssl/pem.h>
36	#include <openssl/rsa.h>	49	#include <openssl/rsa.h>
37	#include <openssl/rand.h>	50	#include <openssl/rand.h>
38		51	#include <openssl/bn.h>
39	#include "gettext.h"
40		52
41	#include "conf.h"	53	#include "conf.h"
42	#include "slog.h"	54	#include "slog.h"
43	#include "util.h"	55	#include "util.h"
44		56
45	char *confbase;	57	char *confbase;
46	char *thisnode;	58	char *thisnode;
47	char *identname;	59	char *identname;
48	char *pidfilename;
49		60
50	struct configuration conf;	61	struct configuration conf;
51		62
		63	u8
52	u8 best_protocol (u8 protset)	64	best_protocol (u8 protset)
53	{	65	{
54	if (protset & PROT_IPv4 ) return PROT_IPv4;	66	if (protset & PROT_IPv4 ) return PROT_IPv4;
55	if (protset & PROT_ICMPv4) return PROT_ICMPv4;	67	if (protset & PROT_ICMPv4) return PROT_ICMPv4;
56	if (protset & PROT_UDPv4 ) return PROT_UDPv4;	68	if (protset & PROT_UDPv4 ) return PROT_UDPv4;
57	if (protset & PROT_TCPv4 ) return PROT_TCPv4;	69	if (protset & PROT_TCPv4 ) return PROT_TCPv4;
		70	if (protset & PROT_DNSv4 ) return PROT_DNSv4;
58		71
59	return 0;	72	return 0;
60	}	73	}
61		74
		75	const char *
62	const char *strprotocol (u8 protocol)	76	strprotocol (u8 protocol)
63	{	77	{
64	if (protocol & PROT_IPv4 ) return "rawip";	78	if (protocol & PROT_IPv4 ) return "rawip";
65	if (protocol & PROT_ICMPv4) return "icmp";	79	if (protocol & PROT_ICMPv4) return "icmp";
66	if (protocol & PROT_UDPv4 ) return "udp";	80	if (protocol & PROT_UDPv4 ) return "udp";
67	if (protocol & PROT_TCPv4 ) return "tcp";	81	if (protocol & PROT_TCPv4 ) return "tcp";
		82	if (protocol & PROT_DNSv4 ) return "dns";
68		83
69	return "<unknown>";	84	return "<unknown>";
70	}	85	}
71		86
72	void	87	static bool
73	conf_node::print ()	88	match_list (const vector<const char > &list, const char str)
74	{	89	{
75	printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n",	90	for (vector<const char *>::const_iterator i = list.end (); i-- > list.begin (); )
76	id,	91	if ((i)[0] == '' && !(*i)[1])
77	id >> 8, id & 0xff,	92	return true;
78	compress ? 'Y' : 'N',	93	else if (!strcmp (*i, str))
79	connectmode == C_ONDEMAND ? "ondemand" :	94	return true;
80	connectmode == C_NEVER ? "never" :	95
81	connectmode == C_ALWAYS ? "always" : "",	96	return false;
82	nodename,	97	}
83	hostname ? hostname : "",	98
84	hostname ? ":" : "",	99	bool
85	hostname ? udp_port : 0	100	conf_node::may_direct (struct conf_node *other)
86	);	101	{
		102	if (match_list (allow_direct, other->nodename))
		103	return true;
		104
		105	if (match_list (deny_direct, other->nodename))
		106	return false;
		107
		108	return true;
87	}	109	}
88		110
89	conf_node::~conf_node ()	111	conf_node::~conf_node ()
90	{	112	{
		113	#if 0
		114	// does not work, because string pointers etc. are shared
		115	// is not called, however
91	if (rsa_key)	116	if (rsa_key)
92	RSA_free (rsa_key);	117	RSA_free (rsa_key);
93		118
94	free (nodename);	119	free (nodename);
95	free (hostname);	120	free (hostname);
		121	free (if_up_data);
		122	#if ENABLE_DNS
		123	free (domain);
		124	free (dns_hostname);
		125	#endif
		126	#endif
96	}	127	}
97		128
		129	void
98	void configuration::init ()	130	configuration::init ()
99	{	131	{
100	memset (this, 0, sizeof (*this));	132	memset (this, 0, sizeof (*this));
101		133
102	mtu = DEFAULT_MTU;	134	mtu = DEFAULT_MTU;
		135	nfmark = 0;
103	rekey = DEFAULT_REKEY;	136	rekey = DEFAULT_REKEY;
104	keepalive = DEFAULT_KEEPALIVE;	137	keepalive = DEFAULT_KEEPALIVE;
105	llevel = L_INFO;	138	llevel = L_INFO;
106	ip_proto = IPPROTO_GRE;	139	ip_proto = IPPROTO_GRE;
107	#if ENABLE_ICMP	140	#if ENABLE_ICMP
108	icmp_type = ICMP_ECHOREPLY;	141	icmp_type = ICMP_ECHOREPLY;
109	#endif	142	#endif
110		143
111	default_node.udp_port = DEFAULT_UDPPORT;	144	default_node.udp_port = DEFAULT_UDPPORT;
112	default_node.tcp_port = DEFAULT_UDPPORT;	145	default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
113	default_node.connectmode = conf_node::C_ALWAYS;	146	default_node.connectmode = conf_node::C_ALWAYS;
114	default_node.compress = true;	147	default_node.compress = true;
115	default_node.protocols = PROT_UDPv4;	148	default_node.protocols = 0;
116	}	149	default_node.max_retry = DEFAULT_MAX_RETRY;
		150	default_node.max_ttl = DEFAULT_MAX_TTL;
		151	default_node.max_queue = DEFAULT_MAX_QUEUE;
		152	default_node.if_up_data = strdup ("");
117		153
		154	#if ENABLE_DNS
		155	default_node.dns_port = 0; // default is 0 == client
		156
		157	dns_case_preserving = true;
		158	dns_forw_host = strdup ("127.0.0.1");
		159	dns_forw_port = 53;
		160	dns_timeout_factor = DEFAULT_DNS_TIMEOUT_FACTOR;
		161	dns_send_interval = DEFAULT_DNS_SEND_INTERVAL;
		162	dns_overlap_factor = DEFAULT_DNS_OVERLAP_FACTOR;
		163	dns_max_outstanding = DEFAULT_DNS_MAX_OUTSTANDING;
		164	#endif
		165
		166	pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
		167	seed_dev = strdup ("/dev/urandom");
		168	reseed = DEFAULT_RESEED;
		169	}
		170
		171	void
118	void configuration::cleanup()	172	configuration::cleanup ()
119	{	173	{
120	if (rsa_key)	174	if (rsa_key)
121	RSA_free (rsa_key);	175	RSA_free (rsa_key);
122		176
123	rsa_key = 0;	177	rsa_key = 0;
124		178
		179	free (seed_dev); seed_dev = 0;
125	free (ifname); ifname = 0;	180	free (pidfilename); pidfilename = 0;
		181	free (ifname); ifname = 0;
126	#if ENABLE_HTTP_PROXY	182	#if ENABLE_HTTP_PROXY
127	free (proxy_host); proxy_host = 0;	183	free (proxy_host); proxy_host = 0;
128	free (proxy_auth); proxy_auth = 0;	184	free (proxy_auth); proxy_auth = 0;
129	#endif	185	#endif
		186	#if ENABLE_DNS
		187	free (dns_forw_host); dns_forw_host = 0;
		188	#endif
		189	free (change_root); change_root = 0;
		190	free (script_if_up); script_if_up = 0;
		191	free (script_node_up); script_node_up = 0;
		192	free (script_node_change); script_node_change = 0;
		193	free (script_node_down); script_node_down = 0;
130	}	194	}
131		195
132	void	196	void
133	configuration::clear_config ()	197	configuration::clear ()
134	{	198	{
135	for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)	199	for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
136	delete *i;	200	delete *i;
137		201
138	nodes.clear ();	202	nodes.clear ();
139		203
140	cleanup ();	204	cleanup ();
141	init ();	205	init ();
142	}	206	}
143		207
		208	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
144	#define parse_bool(target,name,trueval,falseval) \	224	#define parse_bool(target,name,trueval,falseval) do { \
145	if (!strcmp (val, "yes")) target = trueval; \	225	if (!strcmp (val, "yes")) target = trueval; \
146	else if (!strcmp (val, "no")) target = falseval; \	226	else if (!strcmp (val, "no")) target = falseval; \
147	else if (!strcmp (val, "true")) target = trueval; \	227	else if (!strcmp (val, "true")) target = trueval; \
148	else if (!strcmp (val, "false")) target = falseval; \	228	else if (!strcmp (val, "false")) target = falseval; \
149	else if (!strcmp (val, "on")) target = trueval; \	229	else if (!strcmp (val, "on")) target = trueval; \
150	else if (!strcmp (val, "off")) target = falseval; \	230	else if (!strcmp (val, "off")) target = falseval; \
151	else \	231	else \
152	slog (L_WARN, \
153	_("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"); \
154	name, var, fname, lineno);	233	} while (0)
155		234
156	void configuration::read_config (bool need_keys)	235	const char *
		236	configuration_parser::parse_line (char *line)
157	{	237	{
158	char *fname;	238	{
159	FILE *f;	239	char *end = line + strlen (line);
160		240
161	clear_config ();	241	while (end >= line && *end < ' ')
		242	end--;
162		243
163	asprintf (&fname, "%s/vped.conf", confbase);	244	*++end = 0;
164	f = fopen (fname, "r");	245	}
165		246
166	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;
167	{	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	else if (!strcmp (var, "low-power"))
		470	parse_bool (node->low_power, "low-power", true, false);
		471	// all these bool options really really cost a lot of executable size!
		472	else if (!strcmp (var, "enable-tcp"))
		473	{
		474	#if ENABLE_TCP
		475	u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) \| v;
		476	#endif
		477	}
		478	else if (!strcmp (var, "enable-icmp"))
		479	{
		480	#if ENABLE_ICMP
		481	u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) \| v;
		482	#endif
		483	}
		484	else if (!strcmp (var, "enable-dns"))
		485	{
		486	#if ENABLE_DNS
		487	u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) \| v;
		488	#endif
		489	}
		490	else if (!strcmp (var, "enable-udp"))
		491	{
		492	u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) \| v;
		493	}
		494	else if (!strcmp (var, "enable-rawip"))
		495	{
		496	u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) \| v;
		497	}
		498	else if (!strcmp (var, "allow-direct"))
		499	node->allow_direct.push_back (strdup (val));
		500	else if (!strcmp (var, "deny-direct"))
		501	node->deny_direct.push_back (strdup (val));
		502	else if (!strcmp (var, "max-ttl"))
		503	node->max_ttl = atof (val);
		504	else if (!strcmp (var, "max-queue"))
		505	node->max_queue = atoi (val);
		506
		507	// unknown or misplaced
		508	else
		509	return _("unknown configuration directive - ignored");
		510
		511	return 0;
		512	}
		513
		514	void
		515	conf_node::finalise ()
		516	{
		517	if (max_queue < 1)
		518	{
		519	slog (L_WARN, _("%s: max-queue value invalid, setting it to 1."), nodename);
		520	max_queue = 1;
		521	}
		522
		523	if (routerprio > 1 && (connectmode != C_ALWAYS && connectmode != C_DISABLED))
		524	{
		525	//slog (L_WARN, _("%s: has non-zero router-priority but either 'never' or 'ondemand' as connectmode, setting it to 'always'."), nodename);
		526	connectmode = C_ALWAYS;
		527	}
		528	}
		529
		530	void
		531	configuration_parser::parse_file (const char *fname)
		532	{
		533	if (FILE *f = fopen (fname, "r"))
		534	{
168	char line[16384];	535	char line [2048];
169	int lineno = 0;	536	int lineno = 0;
170	char var, val;
171	conf_node *node = &default_node;
172		537
173	while (fgets (line, sizeof (line), f))	538	while (fgets (line, sizeof (line), f))
174	{	539	{
175	lineno++;	540	lineno++;
176		541
177	{	542	const char *warn = parse_line (line);
178	char *end = line + strlen (line);
179		543
180	while (*end < ' ' && end >= line)	544	if (warn)
181	end--;	545	slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno);
182
183	*++end = 0;
184	}
185
186	char *tok = line;
187
188	retry:
189	var = strtok (tok, "\t =");
190	tok = 0;
191
192	if (!var \|\| !var[0])
193	continue; /* no tokens on this line */
194
195	if (var[0] == '#')
196	continue; /* comment: ignore */
197
198	val = strtok (NULL, "\t\n\r =");
199
200	if (!val \|\| val[0] == '#')
201	{
202	slog (L_WARN,
203	_("no value for variable `%s', at '%s' line %d"),
204	var, fname, lineno);
205	break;
206	}
207
208	if (!strcmp (var, "on"))
209	{
210	if (!::thisnode
211	\|\| (val[0] == '!' && strcmp (val + 1, ::thisnode))
212	\|\| !strcmp (val, ::thisnode))
213	goto retry;
214
215	continue;
216	}
217
218	// truly global
219	if (!strcmp (var, "loglevel"))
220	{
221	loglevel l = string_to_loglevel (val);
222
223	if (l != L_NONE)
224	llevel = l;
225	else
226	slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
227	}
228	else if (!strcmp (var, "ip-proto"))
229	ip_proto = atoi (val);
230	else if (!strcmp (var, "icmp-type"))
231	{
232	#if ENABLE_ICMP
233	icmp_type = atoi (val);
234	#endif
235	}
236
237	// per config
238	else if (!strcmp (var, "node"))
239	{
240	default_node.id++;
241
242	node = new conf_node (default_node);
243
244	nodes.push_back (node);
245
246	node->nodename = strdup (val);
247
248	{
249	char *fname;
250	FILE *f;
251
252	asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
253
254	f = fopen (fname, "r");
255	if (f)
256	{
257	node->rsa_key = RSA_new ();
258
259	if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
260	{
261	ERR_load_RSA_strings (); ERR_load_PEM_strings ();
262	slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
263	exit (1);
264	}
265
266	RSA_blinding_on (node->rsa_key, 0);
267
268	fclose (f);
269	}
270	else
271	{
272	slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
273
274	if (need_keys)
275	exit (1);
276	}
277
278	free (fname);
279	}
280
281	if (!::thisnode \|\| !strcmp (node->nodename, ::thisnode))
282	thisnode = node;
283	}
284	else if (!strcmp (var, "private-key"))
285	prikeyfile = strdup (val);
286	else if (!strcmp (var, "ifpersist"))
287	{
288	parse_bool (ifpersist, "ifpersist", true, false);
289	}
290	else if (!strcmp (var, "ifname"))
291	ifname = strdup (val);
292	else if (!strcmp (var, "rekey"))
293	rekey = atoi (val);
294	else if (!strcmp (var, "keepalive"))
295	keepalive = atoi (val);
296	else if (!strcmp (var, "mtu"))
297	mtu = atoi (val);
298	else if (!strcmp (var, "if-up"))
299	script_if_up = strdup (val);
300	else if (!strcmp (var, "node-up"))
301	script_node_up = strdup (val);
302	else if (!strcmp (var, "node-down"))
303	script_node_down = strdup (val);
304	else if (!strcmp (var, "http-proxy-host"))
305	{
306	#if ENABLE_HTTP_PROXY
307	proxy_host = strdup (val);
308	#endif
309	}
310	else if (!strcmp (var, "http-proxy-port"))
311	{
312	#if ENABLE_HTTP_PROXY
313	proxy_port = atoi (val);
314	#endif
315	}
316	else if (!strcmp (var, "http-proxy-auth"))
317	{
318	#if ENABLE_HTTP_PROXY
319	proxy_auth = (char )base64_encode ((const u8 )val, strlen (val));
320	#endif
321	}
322
323	/* node-specific, non-defaultable */
324	else if (node != &default_node && !strcmp (var, "hostname"))
325	{
326	free (node->hostname);
327	node->hostname = strdup (val);
328	}
329
330	/* node-specific, defaultable */
331	else if (!strcmp (var, "udp-port"))
332	node->udp_port = atoi (val);
333	else if (!strcmp (var, "tcp-port"))
334	node->tcp_port = atoi (val);
335	else if (!strcmp (var, "router-priority"))
336	node->routerprio = atoi (val);
337	else if (!strcmp (var, "connect"))
338	{
339	if (!strcmp (val, "ondemand"))
340	node->connectmode = conf_node::C_ONDEMAND;
341	else if (!strcmp (val, "never"))
342	node->connectmode = conf_node::C_NEVER;
343	else if (!strcmp (val, "always"))
344	node->connectmode = conf_node::C_ALWAYS;
345	else if (!strcmp (val, "disabled"))
346	node->connectmode = conf_node::C_DISABLED;
347	else
348	slog (L_WARN,
349	_("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
350	var, fname, lineno);
351	}
352	else if (!strcmp (var, "inherit-tos"))
353	{
354	parse_bool (node->inherit_tos, "inherit-tos", true, false);
355	}
356	else if (!strcmp (var, "compress"))
357	{
358	parse_bool (node->compress, "compress", true, false);
359	}
360	// all these bool options really really cost a lot of executable size!
361	else if (!strcmp (var, "enable-tcp"))
362	{
363	#if ENABLE_TCP
364	u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) \| v;
365	#endif
366	}
367	else if (!strcmp (var, "enable-icmp"))
368	{
369	#if ENABLE_ICMP
370	u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) \| v;
371	#endif
372	}
373	else if (!strcmp (var, "enable-udp"))
374	{
375	u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) \| v;
376	}
377	else if (!strcmp (var, "enable-rawip"))
378	{
379	u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) \| v;
380	}
381
382	// unknown or misplaced
383	else
384	slog (L_WARN,
385	_("unknown or misplaced variable `%s', at '%s' line %d"),
386	var, fname, lineno);
387	}	546	}
388		547
389	fclose (f);	548	fclose (f);
390	}	549	}
391	else	550	else
392	{	551	{
393	slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));	552	slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
394	exit (1);	553	exit (EXIT_FAILURE);
395	}	554	}
		555	}
396		556
		557	configuration_parser::configuration_parser (configuration &conf,
		558	bool need_keys,
		559	int argc,
		560	char **argv)
		561	: conf (conf), need_keys (need_keys), argc (argc), argv (argv)
		562	{
		563	char *fname;
		564
		565	conf.clear ();
		566	node = &conf.default_node;
		567
		568	asprintf (&fname, "%s/gvpe.conf", confbase);
		569	parse_file (fname);
397	free (fname);	570	free (fname);
398		571
399	fname = config_filename (prikeyfile, "hostkey");	572	fname = conf.config_filename (conf.prikeyfile, "hostkey");
400		573
401	f = fopen (fname, "r");	574	if (FILE *f = fopen (fname, "r"))
402	if (f)
403	{	575	{
404	rsa_key = RSA_new ();	576	conf.rsa_key = RSA_new ();
405		577
406	if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))	578	if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL))
407	{	579	{
408	ERR_load_RSA_strings (); ERR_load_PEM_strings ();	580	ERR_load_RSA_strings (); ERR_load_PEM_strings ();
409	slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));	581	slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
410	exit (1);	582	exit (EXIT_FAILURE);
411	}	583	}
412		584
413	RSA_blinding_on (rsa_key, 0);	585	require (RSA_blinding_on (conf.rsa_key, 0));
414		586
415	fclose (f);	587	fclose (f);
416	}	588	}
417	else	589	else
418	{	590	{
419	slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
420
421	if (need_keys)	591	if (need_keys)
422	exit (1);	592	{
		593	slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
		594	exit (EXIT_FAILURE);
		595	}
423	}	596	}
424		597
425	free (fname);	598	free (fname);
426	}
427		599
		600	fname = conf.config_filename (conf.pidfilename);
		601	free (conf.pidfilename); conf.pidfilename = fname;
		602
		603	for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i)
		604	{
		605	conf_node node = i;
		606	char *fname;
		607	FILE *f;
		608
		609	asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
		610
		611	f = fopen (fname, "r");
		612	if (f)
		613	{
		614	node->rsa_key = RSA_new ();
		615
		616	if (!PEM_read_RSAPublicKey (f, &node->rsa_key, NULL, NULL))
		617	{
		618	ERR_load_RSA_strings (); ERR_load_PEM_strings ();
		619	slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
		620	exit (EXIT_FAILURE);
		621	}
		622
		623	require (RSA_blinding_on (node->rsa_key, 0));
		624
		625	fclose (f);
		626	}
		627	else
		628	{
		629	slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
		630
		631	if (need_keys)
		632	exit (EXIT_FAILURE);
		633	}
		634
		635	free (fname);
		636
		637	(*i)->finalise ();
		638	}
		639
		640	if (::thisnode)
		641	{
		642	conf.thisnode = conf.find_node (::thisnode);
		643
		644	if (need_keys)
		645	{
		646	if (!conf.thisnode)
		647	{
		648	slog (L_NOTICE, _("local node ('%s') not found in config file, aborting."), ::thisnode);
		649	exit (EXIT_FAILURE);
		650	}
		651
		652	if (conf.rsa_key && conf.thisnode->rsa_key)
		653	{
		654	const BIGNUM conf_n, conf_e, thisnode_n, thisnode_e;
		655
		656	#if OPENSSL_VERSION_NUMBER >= 0x10100000 && !LIBRESSL_VERSION_NUMBER
		657	RSA_get0_key (conf.rsa_key, &conf_n, &conf_e, 0);
		658	RSA_get0_key (conf.thisnode->rsa_key, &thisnode_n, &thisnode_e, 0);
		659	#else
		660	conf_n = conf.thisnode->rsa_key->n;
		661	conf_e = conf.thisnode->rsa_key->e;
		662	thisnode_n = conf.rsa_key->n;
		663	thisnode_e = conf.rsa_key->e;
		664	#endif
		665	if (BN_cmp (conf_n, thisnode_n) != 0 \|\| BN_cmp (conf_e, thisnode_e) != 0)
		666	{
		667	slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
		668	exit (EXIT_FAILURE);
		669	}
		670	}
		671	}
		672	}
		673
		674	parse_argv ();
		675	}
		676
		677	void
		678	configuration_parser::parse_argv ()
		679	{
		680	for (int i = 0; i < argc; ++i)
		681	{
		682	char *v = argv [i];
		683
		684	if (!*v)
		685	continue;
		686
		687	char *enode = v;
		688
		689	while (enode != '.' && enode > ' ' && enode != '=' && enode)
		690	enode++;
		691
		692	if (*enode != '.')
		693	enode = 0;
		694
		695	if (enode)
		696	{
		697	char *val = strdup (v);
		698	val [enode - v] = 0;
		699	node = conf.find_node (val);
		700	free (val);
		701
		702	if (!node)
		703	{
		704	slog (L_WARN, _("command line option '%s' refers to unknown node, ignoring."), v);
		705	continue;
		706	}
		707	}
		708	else
		709	node = &conf.default_node;
		710
		711	const char *warn = parse_line (enode ? enode + 1 : v);
		712
		713	if (warn)
		714	slog (L_WARN, _("%s, while parsing command line option '%s'."), warn, v);
		715	}
		716	}
		717
		718	char *
428	char configuration::config_filename (const char name, const char *dflt)	719	configuration::config_filename (const char name, const char dflt)
429	{	720	{
430	char *fname;	721	char *fname;
431		722
432	asprintf (&fname, name ? name : dflt, ::thisnode);	723	asprintf (&fname, name ? name : dflt, ::thisnode ? ::thisnode : "<unset>");
433		724
434	if (!ABSOLUTE_PATH (fname))	725	if (!ABSOLUTE_PATH (fname))
435	{	726	{
436	char *rname = fname;	727	char *rname = fname;
437	asprintf (&fname, "%s/%s", confbase, rname);	728	asprintf (&fname, "%s/%s", confbase, rname);
438	free (rname);	729	free (rname);
439	}	730	}
440		731
441	return fname;	732	return fname;
		733	}
		734
		735	void
		736	conf_node::print ()
		737	{
		738	printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %02x %s%s%d\n",
		739	id,
		740	id >> 8, id & 0xff,
		741	compress ? 'Y' : 'N',
		742	connectmode == C_ONDEMAND ? "ondemand"
		743	: connectmode == C_NEVER ? "never"
		744	: connectmode == C_ALWAYS ? "always"
		745	: connectmode == C_DISABLED ? "disabled"
		746	: "",
		747	nodename,
		748	protocols,
		749	hostname ? hostname : "",
		750	hostname ? ":" : "",
		751	hostname ? udp_port : 0
		752	);
442	}	753	}
443		754
444	void	755	void
445	configuration::print ()	756	configuration::print ()
446	{	757	{
…		…
453	printf (_("interface: %s\n"), ifname);	764	printf (_("interface: %s\n"), ifname);
454	printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");	765	printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
455	printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);	766	printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
456	printf ("\n");	767	printf ("\n");
457		768
458	printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",	769	printf ("%4s %-17s %s %-8.8s %-10.10s %04s %s\n",
459	_("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));	770	_("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Prot"), _("Host:Port"));
460		771
461	for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)	772	for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
462	(*i)->print ();	773	(*i)->print ();
463		774
464	printf ("\n");	775	printf ("\n");
465	}	776	}
466		777
467	configuration::configuration ()	778	configuration::configuration ()
468	{	779	{
		780	asprintf (&confbase, "%s/gvpe", CONFDIR);
		781
469	init ();	782	init ();
470	}	783	}
471		784
472	configuration::~configuration ()	785	configuration::~configuration ()
473	{	786	{
474	cleanup ();	787	cleanup ();
475	}	788	}
476		789
477

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Comparing gvpe/src/conf.C (file contents): Revision 1.21 by pcg, Sat Jan 17 01:18:36 2004 UTC vs. Revision 1.67 by root, Thu Oct 25 04:32:27 2018 UTC

Diff Legend

Comparing gvpe/src/conf.C (file contents):
Revision 1.21 by pcg, Sat Jan 17 01:18:36 2004 UTC vs.
Revision 1.67 by root, Thu Oct 25 04:32:27 2018 UTC