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

Comparing gvpe/src/conf.C (file contents):
Revision 1.25 by pcg, Mon May 10 20:13:09 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	#include <openssl/bn.h>	51	#include <openssl/bn.h>
39		52
40	#include "gettext.h"
41
42	#include "conf.h"	53	#include "conf.h"
43	#include "slog.h"	54	#include "slog.h"
44	#include "util.h"	55	#include "util.h"
45		56
46	char *confbase;	57	char *confbase;
47	char *thisnode;	58	char *thisnode;
48	char *identname;	59	char *identname;
49		60
50	struct configuration conf;	61	struct configuration conf;
51		62
		63	u8
52	u8 best_protocol (u8 protset)	64	best_protocol (u8 protset)
53	{	65	{
54	if (protset & PROT_IPv4 ) return PROT_IPv4;	66	if (protset & PROT_IPv4 ) return PROT_IPv4;
55	if (protset & PROT_ICMPv4) return PROT_ICMPv4;	67	if (protset & PROT_ICMPv4) return PROT_ICMPv4;
56	if (protset & PROT_UDPv4 ) return PROT_UDPv4;	68	if (protset & PROT_UDPv4 ) return PROT_UDPv4;
57	if (protset & PROT_TCPv4 ) return PROT_TCPv4;	69	if (protset & PROT_TCPv4 ) return PROT_TCPv4;
58	if (protset & PROT_DNSv4 ) return PROT_DNSv4;	70	if (protset & PROT_DNSv4 ) return PROT_DNSv4;
59		71
60	return 0;	72	return 0;
61	}	73	}
62		74
		75	const char *
63	const char *strprotocol (u8 protocol)	76	strprotocol (u8 protocol)
64	{	77	{
65	if (protocol & PROT_IPv4 ) return "rawip";	78	if (protocol & PROT_IPv4 ) return "rawip";
66	if (protocol & PROT_ICMPv4) return "icmp";	79	if (protocol & PROT_ICMPv4) return "icmp";
67	if (protocol & PROT_UDPv4 ) return "udp";	80	if (protocol & PROT_UDPv4 ) return "udp";
68	if (protocol & PROT_TCPv4 ) return "tcp";	81	if (protocol & PROT_TCPv4 ) return "tcp";
69	if (protocol & PROT_DNSv4 ) return "dns";	82	if (protocol & PROT_DNSv4 ) return "dns";
70		83
71	return "<unknown>";	84	return "<unknown>";
72	}	85	}
73		86
74	void	87	static bool
75	conf_node::print ()	88	match_list (const vector<const char > &list, const char str)
76	{	89	{
77	printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n",	90	for (vector<const char *>::const_iterator i = list.end (); i-- > list.begin (); )
78	id,	91	if ((i)[0] == '' && !(*i)[1])
79	id >> 8, id & 0xff,	92	return true;
80	compress ? 'Y' : 'N',	93	else if (!strcmp (*i, str))
81	connectmode == C_ONDEMAND ? "ondemand" :	94	return true;
82	connectmode == C_NEVER ? "never" :	95
83	connectmode == C_ALWAYS ? "always" : "",	96	return false;
84	nodename,	97	}
85	hostname ? hostname : "",	98
86	hostname ? ":" : "",	99	bool
87	hostname ? udp_port : 0	100	conf_node::may_direct (struct conf_node *other)
88	);	101	{
		102	if (match_list (allow_direct, other->nodename))
		103	return true;
		104
		105	if (match_list (deny_direct, other->nodename))
		106	return false;
		107
		108	return true;
89	}	109	}
90		110
91	conf_node::~conf_node ()	111	conf_node::~conf_node ()
92	{	112	{
		113	#if 0
		114	// does not work, because string pointers etc. are shared
		115	// is not called, however
93	if (rsa_key)	116	if (rsa_key)
94	RSA_free (rsa_key);	117	RSA_free (rsa_key);
95		118
96	free (nodename);	119	free (nodename);
97	free (hostname);	120	free (hostname);
		121	free (if_up_data);
		122	#if ENABLE_DNS
		123	free (domain);
		124	free (dns_hostname);
		125	#endif
		126	#endif
98	}	127	}
99		128
		129	void
100	void configuration::init ()	130	configuration::init ()
101	{	131	{
102	asprintf (&confbase, "%s/vpe", CONFDIR);
103
104	memset (this, 0, sizeof (*this));	132	memset (this, 0, sizeof (*this));
105		133
106	mtu = DEFAULT_MTU;	134	mtu = DEFAULT_MTU;
		135	nfmark = 0;
107	rekey = DEFAULT_REKEY;	136	rekey = DEFAULT_REKEY;
108	keepalive = DEFAULT_KEEPALIVE;	137	keepalive = DEFAULT_KEEPALIVE;
109	llevel = L_INFO;	138	llevel = L_INFO;
110	ip_proto = IPPROTO_GRE;	139	ip_proto = IPPROTO_GRE;
111	#if ENABLE_ICMP	140	#if ENABLE_ICMP
…		…
114		143
115	default_node.udp_port = DEFAULT_UDPPORT;	144	default_node.udp_port = DEFAULT_UDPPORT;
116	default_node.tcp_port = DEFAULT_UDPPORT; // ehrm	145	default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
117	default_node.connectmode = conf_node::C_ALWAYS;	146	default_node.connectmode = conf_node::C_ALWAYS;
118	default_node.compress = true;	147	default_node.compress = true;
119	default_node.protocols = PROT_UDPv4;	148	default_node.protocols = 0;
		149	default_node.max_retry = DEFAULT_MAX_RETRY;
		150	default_node.max_ttl = DEFAULT_MAX_TTL;
		151	default_node.max_queue = DEFAULT_MAX_QUEUE;
		152	default_node.if_up_data = strdup ("");
120		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
121	conf.pidfilename = strdup (LOCALSTATEDIR "/run/vped.pid");	166	pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
		167	seed_dev = strdup ("/dev/urandom");
		168	reseed = DEFAULT_RESEED;
122	}	169	}
123		170
		171	void
124	void configuration::cleanup()	172	configuration::cleanup ()
125	{	173	{
126	if (rsa_key)	174	if (rsa_key)
127	RSA_free (rsa_key);	175	RSA_free (rsa_key);
128		176
129	rsa_key = 0;	177	rsa_key = 0;
130		178
		179	free (seed_dev); seed_dev = 0;
131	free (pidfilename); pidfilename = 0;	180	free (pidfilename); pidfilename = 0;
132	free (ifname); ifname = 0;	181	free (ifname); ifname = 0;
133	#if ENABLE_HTTP_PROXY	182	#if ENABLE_HTTP_PROXY
134	free (proxy_host); proxy_host = 0;	183	free (proxy_host); proxy_host = 0;
135	free (proxy_auth); proxy_auth = 0;	184	free (proxy_auth); proxy_auth = 0;
136	#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;
137	}	194	}
138		195
139	void	196	void
140	configuration::clear_config ()	197	configuration::clear ()
141	{	198	{
142	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)
143	delete *i;	200	delete *i;
144		201
145	nodes.clear ();	202	nodes.clear ();
146		203
147	cleanup ();	204	cleanup ();
148	init ();	205	init ();
149	}	206	}
150		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
151	#define parse_bool(target,name,trueval,falseval) \	224	#define parse_bool(target,name,trueval,falseval) do { \
152	if (!strcmp (val, "yes")) target = trueval; \	225	if (!strcmp (val, "yes")) target = trueval; \
153	else if (!strcmp (val, "no")) target = falseval; \	226	else if (!strcmp (val, "no")) target = falseval; \
154	else if (!strcmp (val, "true")) target = trueval; \	227	else if (!strcmp (val, "true")) target = trueval; \
155	else if (!strcmp (val, "false")) target = falseval; \	228	else if (!strcmp (val, "false")) target = falseval; \
156	else if (!strcmp (val, "on")) target = trueval; \	229	else if (!strcmp (val, "on")) target = trueval; \
157	else if (!strcmp (val, "off")) target = falseval; \	230	else if (!strcmp (val, "off")) target = falseval; \
158	else \	231	else \
159	slog (L_WARN, \
160	_("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"); \
161	name, var, fname, lineno);	233	} while (0)
162		234
163	void configuration::read_config (bool need_keys)	235	const char *
		236	configuration_parser::parse_line (char *line)
164	{	237	{
165	char *fname;	238	{
166	FILE *f;	239	char *end = line + strlen (line);
167		240
168	clear_config ();	241	while (end >= line && *end < ' ')
		242	end--;
169		243
170	asprintf (&fname, "%s/vped.conf", confbase);	244	*++end = 0;
171	f = fopen (fname, "r");	245	}
172		246
173	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;
174	{	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	{
175	char line[16384];	535	char line [2048];
176	int lineno = 0;	536	int lineno = 0;
177	char var, val;
178	conf_node *node = &default_node;
179		537
180	while (fgets (line, sizeof (line), f))	538	while (fgets (line, sizeof (line), f))
181	{	539	{
182	lineno++;	540	lineno++;
183		541
184	{	542	const char *warn = parse_line (line);
185	char *end = line + strlen (line);
186		543
187	while (*end < ' ' && end >= line)	544	if (warn)
188	end--;	545	slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno);
189
190	*++end = 0;
191	}
192
193	char *tok = line;
194
195	retry:
196	var = strtok (tok, "\t =");
197	tok = 0;
198
199	if (!var \|\| !var[0])
200	continue; /* no tokens on this line */
201
202	if (var[0] == '#')
203	continue; /* comment: ignore */
204
205	val = strtok (NULL, "\t\n\r =");
206
207	if (!val \|\| val[0] == '#')
208	{
209	slog (L_WARN,
210	_("no value for variable `%s', at '%s' line %d"),
211	var, fname, lineno);
212	break;
213	}
214
215	if (!strcmp (var, "on"))
216	{
217	if (!::thisnode
218	\|\| (val[0] == '!' && strcmp (val + 1, ::thisnode))
219	\|\| !strcmp (val, ::thisnode))
220	goto retry;
221
222	continue;
223	}
224
225	// truly global
226	if (!strcmp (var, "loglevel"))
227	{
228	loglevel l = string_to_loglevel (val);
229
230	if (l != L_NONE)
231	llevel = l;
232	else
233	slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
234	}
235	else if (!strcmp (var, "ip-proto"))
236	ip_proto = atoi (val);
237	else if (!strcmp (var, "icmp-type"))
238	{
239	#if ENABLE_ICMP
240	icmp_type = atoi (val);
241	#endif
242	}
243
244	// per config
245	else if (!strcmp (var, "node"))
246	{
247	default_node.id++;
248
249	node = new conf_node (default_node);
250
251	nodes.push_back (node);
252
253	node->nodename = strdup (val);
254
255	{
256	char *fname;
257	FILE *f;
258
259	asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
260
261	f = fopen (fname, "r");
262	if (f)
263	{
264	node->rsa_key = RSA_new ();
265
266	if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
267	{
268	ERR_load_RSA_strings (); ERR_load_PEM_strings ();
269	slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
270	exit (EXIT_FAILURE);
271	}
272
273	require (RSA_blinding_on (node->rsa_key, 0));
274
275	fclose (f);
276	}
277	else
278	{
279	slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
280
281	if (need_keys)
282	exit (EXIT_FAILURE);
283	}
284
285	free (fname);
286	}
287
288	if (::thisnode && !strcmp (node->nodename, ::thisnode))
289	thisnode = node;
290	}
291	else if (!strcmp (var, "private-key"))
292	free (prikeyfile), prikeyfile = strdup (val);
293	else if (!strcmp (var, "ifpersist"))
294	{
295	parse_bool (ifpersist, "ifpersist", true, false);
296	}
297	else if (!strcmp (var, "ifname"))
298	free (ifname), ifname = strdup (val);
299	else if (!strcmp (var, "rekey"))
300	rekey = atoi (val);
301	else if (!strcmp (var, "keepalive"))
302	keepalive = atoi (val);
303	else if (!strcmp (var, "mtu"))
304	mtu = atoi (val);
305	else if (!strcmp (var, "if-up"))
306	free (script_if_up), script_if_up = strdup (val);
307	else if (!strcmp (var, "node-up"))
308	free (script_node_up), script_node_up = strdup (val);
309	else if (!strcmp (var, "node-down"))
310	free (script_node_down), script_node_down = strdup (val);
311	else if (!strcmp (var, "pid-file"))
312	free (pidfilename), pidfilename = strdup (val);
313	else if (!strcmp (var, "http-proxy-host"))
314	{
315	#if ENABLE_HTTP_PROXY
316	free (proxy_host), proxy_host = strdup (val);
317	#endif
318	}
319	else if (!strcmp (var, "http-proxy-port"))
320	{
321	#if ENABLE_HTTP_PROXY
322	proxy_port = atoi (val);
323	#endif
324	}
325	else if (!strcmp (var, "http-proxy-auth"))
326	{
327	#if ENABLE_HTTP_PROXY
328	proxy_auth = (char )base64_encode ((const u8 )val, strlen (val));
329	#endif
330	}
331
332	/* node-specific, non-defaultable */
333	else if (node != &default_node && !strcmp (var, "hostname"))
334	free (node->hostname), node->hostname = strdup (val);
335
336	/* node-specific, defaultable */
337	else if (!strcmp (var, "udp-port"))
338	node->udp_port = atoi (val);
339	else if (!strcmp (var, "tcp-port"))
340	node->tcp_port = atoi (val);
341	else if (!strcmp (var, "dns-port"))
342	node->dns_port = atoi (val);
343	else if (!strcmp (var, "router-priority"))
344	node->routerprio = atoi (val);
345	else if (!strcmp (var, "connect"))
346	{
347	if (!strcmp (val, "ondemand"))
348	node->connectmode = conf_node::C_ONDEMAND;
349	else if (!strcmp (val, "never"))
350	node->connectmode = conf_node::C_NEVER;
351	else if (!strcmp (val, "always"))
352	node->connectmode = conf_node::C_ALWAYS;
353	else if (!strcmp (val, "disabled"))
354	node->connectmode = conf_node::C_DISABLED;
355	else
356	slog (L_WARN,
357	_("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
358	var, fname, lineno);
359	}
360	else if (!strcmp (var, "inherit-tos"))
361	{
362	parse_bool (node->inherit_tos, "inherit-tos", true, false);
363	}
364	else if (!strcmp (var, "compress"))
365	{
366	parse_bool (node->compress, "compress", true, false);
367	}
368	// all these bool options really really cost a lot of executable size!
369	else if (!strcmp (var, "enable-tcp"))
370	{
371	#if ENABLE_TCP
372	u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) \| v;
373	#endif
374	}
375	else if (!strcmp (var, "enable-icmp"))
376	{
377	#if ENABLE_ICMP
378	u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) \| v;
379	#endif
380	}
381	else if (!strcmp (var, "enable-dns"))
382	{
383	#if ENABLE_DNS
384	u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) \| v;
385	#endif
386	}
387	else if (!strcmp (var, "enable-udp"))
388	{
389	u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) \| v;
390	}
391	else if (!strcmp (var, "enable-rawip"))
392	{;
393	u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) \| v;
394	}
395
396	// unknown or misplaced
397	else
398	slog (L_WARN,
399	_("unknown or misplaced variable `%s', at '%s' line %d"),
400	var, fname, lineno);
401	}	546	}
402		547
403	fclose (f);	548	fclose (f);
404	}	549	}
405	else	550	else
406	{	551	{
407	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));
408	exit (EXIT_FAILURE);	553	exit (EXIT_FAILURE);
409	}	554	}
		555	}
410		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);
411	free (fname);	570	free (fname);
412		571
413	fname = config_filename (prikeyfile, "hostkey");	572	fname = conf.config_filename (conf.prikeyfile, "hostkey");
414		573
415	f = fopen (fname, "r");	574	if (FILE *f = fopen (fname, "r"))
416	if (f)
417	{	575	{
418	rsa_key = RSA_new ();	576	conf.rsa_key = RSA_new ();
419		577
420	if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))	578	if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL))
421	{	579	{
422	ERR_load_RSA_strings (); ERR_load_PEM_strings ();	580	ERR_load_RSA_strings (); ERR_load_PEM_strings ();
423	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));
424	exit (EXIT_FAILURE);	582	exit (EXIT_FAILURE);
425	}	583	}
426		584
427	require (RSA_blinding_on (rsa_key, 0));	585	require (RSA_blinding_on (conf.rsa_key, 0));
428		586
429	fclose (f);	587	fclose (f);
430	}	588	}
431	else	589	else
432	{	590	{
433	slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
434
435	if (need_keys)	591	if (need_keys)
		592	{
		593	slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
436	exit (EXIT_FAILURE);	594	exit (EXIT_FAILURE);
437	}
438
439	if (need_keys && ::thisnode
440	&& rsa_key && thisnode && thisnode->rsa_key)
441	if (BN_cmp (rsa_key->n, thisnode->rsa_key->n) != 0
442	\|\| BN_cmp (rsa_key->e, thisnode->rsa_key->e) != 0)
443	{
444	slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
445	exit (EXIT_FAILURE);
446	}	595	}
		596	}
447		597
448	free (fname);	598	free (fname);
449	}
450		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 *
451	char configuration::config_filename (const char name, const char *dflt)	719	configuration::config_filename (const char name, const char dflt)
452	{	720	{
453	char *fname;	721	char *fname;
454		722
455	asprintf (&fname, name ? name : dflt, ::thisnode);	723	asprintf (&fname, name ? name : dflt, ::thisnode ? ::thisnode : "<unset>");
456		724
457	if (!ABSOLUTE_PATH (fname))	725	if (!ABSOLUTE_PATH (fname))
458	{	726	{
459	char *rname = fname;	727	char *rname = fname;
460	asprintf (&fname, "%s/%s", confbase, rname);	728	asprintf (&fname, "%s/%s", confbase, rname);
461	free (rname);	729	free (rname);
462	}	730	}
463		731
464	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	);
465	}	753	}
466		754
467	void	755	void
468	configuration::print ()	756	configuration::print ()
469	{	757	{
…		…
476	printf (_("interface: %s\n"), ifname);	764	printf (_("interface: %s\n"), ifname);
477	printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");	765	printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
478	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);
479	printf ("\n");	767	printf ("\n");
480		768
481	printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",	769	printf ("%4s %-17s %s %-8.8s %-10.10s %04s %s\n",
482	_("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));	770	_("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Prot"), _("Host:Port"));
483		771
484	for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)	772	for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
485	(*i)->print ();	773	(*i)->print ();
486		774
487	printf ("\n");	775	printf ("\n");
488	}	776	}
489		777
490	configuration::configuration ()	778	configuration::configuration ()
491	{	779	{
		780	asprintf (&confbase, "%s/gvpe", CONFDIR);
		781
492	init ();	782	init ();
493	}	783	}
494		784
495	configuration::~configuration ()	785	configuration::~configuration ()
496	{	786	{
497	cleanup ();	787	cleanup ();
498	}	788	}
499		789
500

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Comparing gvpe/src/conf.C (file contents): Revision 1.25 by pcg, Mon May 10 20:13:09 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 1.25 by pcg, Mon May 10 20:13:09 2004 UTC vs.
Revision 1.67 by root, Thu Oct 25 04:32:27 2018 UTC