gvpe/src/conf.h

/*
    conf.h -- configuration database
    Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de>
 
    This file is part of GVPE.

    GVPE is free software; you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by the
    Free Software Foundation; either version 3 of the License, or (at your
    option) any later version.
   
    This program is distributed in the hope that it will be useful, but
    WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
    Public License for more details.
   
    You should have received a copy of the GNU General Public License along
    with this program; if not, see <http://www.gnu.org/licenses/>.
   
    Additional permission under GNU GPL version 3 section 7
   
    If you modify this Program, or any covered work, by linking or
    combining it with the OpenSSL project's OpenSSL library (or a modified
    version of that library), containing parts covered by the terms of the
    OpenSSL or SSLeay licenses, the licensors of this Program grant you
    additional permission to convey the resulting work.  Corresponding
    Source for a non-source form of such a combination shall include the
    source code for the parts of OpenSSL used as well as that of the
    covered work.
*/

#ifndef GVPE_CONF_H__
#define GVPE_CONF_H__

#include <vector>

#include <openssl/rsa.h>

#include "slog.h"
#include "global.h"

#define DEFAULT_REKEY                   3600
#define DEFAULT_KEEPALIVE               60      // one keepalive/minute (it's just 8 bytes...)
#define DEFAULT_UDPPORT                 655     // same as tinc, conflicts would be rare
#define DEFAULT_MTU                     1500    // let's ether-net
#define DEFAULT_MAX_RETRY               3600    // retry at least this often
#define DEFAULT_MAX_TTL                 60      // packets expire after this many seconds
#define DEFAULT_MAX_QUEUE               512     // never queue more than this many packets
 
#define DEFAULT_DNS_TIMEOUT_FACTOR      8.F     // initial retry timeout multiple
#define DEFAULT_DNS_SEND_INTERVAL       .01F    // minimum send interval
#define DEFAULT_DNS_OVERLAP_FACTOR      .5F     // RTT * LATENCY_FACTOR == sending rate
#define DEFAULT_DNS_MAX_OUTSTANDING     100     // max. number of outstanding requests

enum
{
  PROT_UDPv4  = 0x01, // udp over ipv4
  PROT_IPv4   = 0x02, // generic ip protocol
  PROT_TCPv4  = 0x04, // tcp over ipv4 (server)
  PROT_ICMPv4 = 0x08, // icmp over ipv4
  PROT_DNSv4  = 0x10, // dns tunnel ipv4 (server)
};

#define PROT_RELIABLE (PROT_TCPv4 | PROT_DNSv4)
#define PROT_SLOW     PROT_DNSv4

// select the "best" protocol of the available ones
u8 best_protocol (u8 protset);
const char *strprotocol (u8 protocol);

struct conf_node
{
  int id;         // the id of this node, a 12-bit-number

  RSA *rsa_key;   // his public key
  char *nodename; // nodename, an internal nickname.
  char *hostname; // hostname, if known, or NULL.
  char *if_up_data;
#if ENABLE_DNS
  char *domain;   // dns tunnel domain
#endif
  char *dns_hostname;
  u16 dns_port;

  u8 protocols;   // protocols this host can send & receive
  u16 udp_port, tcp_port;   // the port to bind to
  int max_retry;
  double max_ttl;   // packets expire after this many seconds
  int max_queue;    // maixmum send queue length

  enum connectmode { C_ONDEMAND, C_NEVER, C_ALWAYS, C_DISABLED } connectmode;
  bool compress;
  bool inherit_tos; // inherit TOS in packets send to this destination

  vector<const char *> allow_direct;
  vector<const char *> deny_direct;

  u32 routerprio;

  u8 connectable_protocols () const
  {
    u8 protocols = this->protocols;

    // mask out endpoints we can't connect to
    if (!udp_port) protocols &= ~PROT_UDPv4;
    if (!tcp_port) protocols &= ~PROT_TCPv4;
    if (!dns_port) protocols &= ~PROT_DNSv4;

    return protocols;
  }

  bool may_direct (struct conf_node *other);
  void finalise ();

  void print ();

  ~conf_node ();
};

struct configuration
{
  typedef vector<conf_node *> node_vector;
  node_vector nodes;
  conf_node default_node;
  conf_node *thisnode;
  int mtu;          // the mtu used for outgoing tunnel packets
  double rekey;     // rekey interval
  double keepalive; // keepalive probes interval
  char *ifname;     // the interface name (tap0 ...)
  bool ifpersist;   // should the interface be persistent
  char *prikeyfile;
  RSA *rsa_key;     // our private rsa key
  loglevel llevel;
  u8 ip_proto;      // the ip protocol to use
#if ENABLE_ICMP
  u8 icmp_type;     // the icmp type for the icmp-protocol
#endif

  char *script_if_up;
  char *script_node_up;
  char *script_node_down;
  char *pidfilename;

#if ENABLE_HTTP_PROXY
  char *proxy_auth;     // login:password
  char *proxy_host;     // the proxy hostname, e.g. proxy1.example.net
  u16 proxy_port;       // the proxy port, e.g. 3128
#endif

#if ENABLE_DNS
  char *dns_forw_host;
  u16 dns_forw_port;
  float dns_timeout_factor;
  float dns_send_interval;
  float dns_overlap_factor;
  int dns_max_outstanding;
#endif

  void init ();
  void cleanup ();
  void clear ();

  // create a filename from string, replacing %s by the nodename
  // and using relative paths under confbase.
  char *config_filename (const char *name, const char *dflt);

  void print ();

  configuration ();
  ~configuration ();
};

struct configuration_parser
{
  configuration &conf;

  bool need_keys;
  conf_node *node;

  int argc;
  char **argv;

  configuration_parser (configuration &conf, bool need_keys, int argc, char **argv);

  const char *parse_line (char *line);
  void parse_argv ();
};

extern struct configuration conf;

#define THISNODE ::conf.thisnode

#endif

Revision:	1.35
Committed:	Sun Aug 10 01:34:36 2008 UTC (15 years, 9 months ago) by pcg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-2_2, rel-2_21, rel-2_22
Changes since 1.34:	+14 -1 lines
Log Message:	lots tuning
#	User	Rev	Content
1	pcg	1.1	/*
2			conf.h -- configuration database
3	pcg	1.34	Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de>
4	pcg	1.1
5	pcg	1.25	This file is part of GVPE.
6
7	pcg	1.34	GVPE is free software; you can redistribute it and/or modify it
8			under the terms of the GNU General Public License as published by the
9			Free Software Foundation; either version 3 of the License, or (at your
10			option) any later version.
11
12			This program is distributed in the hope that it will be useful, but
13			WITHOUT ANY WARRANTY; without even the implied warranty of
14			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
15			Public License for more details.
16
17			You should have received a copy of the GNU General Public License along
18			with this program; if not, see <http://www.gnu.org/licenses/>.
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.
30	pcg	1.1	*/
31
32	pcg	1.27	#ifndef GVPE_CONF_H__
33			#define GVPE_CONF_H__
34	pcg	1.1
35	pcg	1.19	#include <vector>
36
37	pcg	1.11	#include <openssl/rsa.h>
38	pcg	1.1
39	pcg	1.2	#include "slog.h"
40	pcg	1.1	#include "global.h"
41
42	pcg	1.28	#define DEFAULT_REKEY 3600
43			#define DEFAULT_KEEPALIVE 60 // one keepalive/minute (it's just 8 bytes...)
44			#define DEFAULT_UDPPORT 655 // same as tinc, conflicts would be rare
45			#define DEFAULT_MTU 1500 // let's ether-net
46			#define DEFAULT_MAX_RETRY 3600 // retry at least this often
47	pcg	1.33	#define DEFAULT_MAX_TTL 60 // packets expire after this many seconds
48			#define DEFAULT_MAX_QUEUE 512 // never queue more than this many packets
49	pcg	1.28
50			#define DEFAULT_DNS_TIMEOUT_FACTOR 8.F // initial retry timeout multiple
51			#define DEFAULT_DNS_SEND_INTERVAL .01F // minimum send interval
52			#define DEFAULT_DNS_OVERLAP_FACTOR .5F // RTT * LATENCY_FACTOR == sending rate
53			#define DEFAULT_DNS_MAX_OUTSTANDING 100 // max. number of outstanding requests
54	pcg	1.8
55	pcg	1.30	enum
56			{
57	pcg	1.13	PROT_UDPv4 = 0x01, // udp over ipv4
58			PROT_IPv4 = 0x02, // generic ip protocol
59	pcg	1.22	PROT_TCPv4 = 0x04, // tcp over ipv4 (server)
60	pcg	1.14	PROT_ICMPv4 = 0x08, // icmp over ipv4
61	pcg	1.22	PROT_DNSv4 = 0x10, // dns tunnel ipv4 (server)
62	pcg	1.8	};
63	pcg	1.1
64	pcg	1.26	#define PROT_RELIABLE (PROT_TCPv4 \| PROT_DNSv4)
65			#define PROT_SLOW PROT_DNSv4
66
67	pcg	1.10	// select the "best" protocol of the available ones
68			u8 best_protocol (u8 protset);
69			const char *strprotocol (u8 protocol);
70
71	pcg	1.30	struct conf_node
72			{
73	pcg	1.1	int id; // the id of this node, a 12-bit-number
74
75			RSA *rsa_key; // his public key
76			char *nodename; // nodename, an internal nickname.
77			char *hostname; // hostname, if known, or NULL.
78	pcg	1.29	char *if_up_data;
79	pcg	1.22	#if ENABLE_DNS
80			char *domain; // dns tunnel domain
81	pcg	1.24	#endif
82			char *dns_hostname;
83	pcg	1.22	u16 dns_port;
84	pcg	1.8
85	pcg	1.9	u8 protocols; // protocols this host can send & receive
86	pcg	1.22	u16 udp_port, tcp_port; // the port to bind to
87	pcg	1.21	int max_retry;
88	pcg	1.33	double max_ttl; // packets expire after this many seconds
89			int max_queue; // maixmum send queue length
90	pcg	1.1
91	pcg	1.7	enum connectmode { C_ONDEMAND, C_NEVER, C_ALWAYS, C_DISABLED } connectmode;
92	pcg	1.1	bool compress;
93	pcg	1.4	bool inherit_tos; // inherit TOS in packets send to this destination
94	pcg	1.1
95	pcg	1.32	vector<const char *> allow_direct;
96			vector<const char *> deny_direct;
97
98	pcg	1.1	u32 routerprio;
99	pcg	1.32
100	pcg	1.35	u8 connectable_protocols () const
101			{
102			u8 protocols = this->protocols;
103
104			// mask out endpoints we can't connect to
105			if (!udp_port) protocols &= ~PROT_UDPv4;
106			if (!tcp_port) protocols &= ~PROT_TCPv4;
107			if (!dns_port) protocols &= ~PROT_DNSv4;
108
109			return protocols;
110			}
111
112			bool may_direct (struct conf_node *other);
113			void finalise ();
114	pcg	1.1
115			void print ();
116
117	pcg	1.12	~conf_node ();
118	pcg	1.1	};
119
120	pcg	1.30	struct configuration
121			{
122	pcg	1.1	typedef vector<conf_node *> node_vector;
123			node_vector nodes;
124			conf_node default_node;
125			conf_node *thisnode;
126	pcg	1.6	int mtu; // the mtu used for outgoing tunnel packets
127			double rekey; // rekey interval
128			double keepalive; // keepalive probes interval
129			char *ifname; // the interface name (tap0 ...)
130			bool ifpersist; // should the interface be persistent
131	pcg	1.1	char *prikeyfile;
132	pcg	1.9	RSA *rsa_key; // our private rsa key
133	pcg	1.2	loglevel llevel;
134	pcg	1.13	u8 ip_proto; // the ip protocol to use
135	pcg	1.15	#if ENABLE_ICMP
136	pcg	1.13	u8 icmp_type; // the icmp type for the icmp-protocol
137	pcg	1.15	#endif
138	pcg	1.1
139			char *script_if_up;
140			char *script_node_up;
141			char *script_node_down;
142	pcg	1.20	char *pidfilename;
143	pcg	1.12
144			#if ENABLE_HTTP_PROXY
145			char *proxy_auth; // login:password
146			char *proxy_host; // the proxy hostname, e.g. proxy1.example.net
147			u16 proxy_port; // the proxy port, e.g. 3128
148			#endif
149	pcg	1.23
150	pcg	1.24	#if ENABLE_DNS
151	pcg	1.22	char *dns_forw_host;
152			u16 dns_forw_port;
153	pcg	1.28	float dns_timeout_factor;
154			float dns_send_interval;
155			float dns_overlap_factor;
156			int dns_max_outstanding;
157	pcg	1.24	#endif
158	pcg	1.1
159			void init ();
160			void cleanup ();
161	pcg	1.30	void clear ();
162	pcg	1.1
163			// create a filename from string, replacing %s by the nodename
164			// and using relative paths under confbase.
165			char config_filename (const char name, const char *dflt);
166
167			void print ();
168
169			configuration ();
170			~configuration ();
171			};
172
173	pcg	1.30	struct configuration_parser
174			{
175			configuration &conf;
176
177			bool need_keys;
178			conf_node *node;
179
180			int argc;
181			char **argv;
182
183			configuration_parser (configuration &conf, bool need_keys, int argc, char **argv);
184
185			const char parse_line (char line);
186			void parse_argv ();
187			};
188
189	pcg	1.1	extern struct configuration conf;
190
191			#define THISNODE ::conf.thisnode
192
193			#endif
194