gvpe/src/conf.h

/*
    conf.h -- configuration database
    Copyright (C) 2003-2005 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 2 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 gvpe; if not, write to the Free Software
    Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/

#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_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;

  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;

  bool can_direct (struct conf_node *other);

  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:	1.32
Committed:	Mon Dec 5 12:58:09 2005 UTC (18 years, 5 months ago) by pcg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-2_01, rel-2_0
Changes since 1.31:	+5 -0 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	pcg	1.1	/*
2			conf.h -- configuration database
3	pcg	1.25	Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de>
4	pcg	1.1
5	pcg	1.25	This file is part of GVPE.
6
7			GVPE is free software; you can redistribute it and/or modify
8	pcg	1.1	it under the terms of the GNU General Public License as published by
9			the Free Software Foundation; either version 2 of the License, or
10			(at your option) any later version.
11
12			This program is distributed in the hope that it will be useful,
13			but WITHOUT ANY WARRANTY; without even the implied warranty of
14			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			GNU General Public License for more details.
16
17			You should have received a copy of the GNU General Public License
18	pcg	1.25	along with gvpe; if not, write to the Free Software
19	pcg	1.31	Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20	pcg	1.1	*/
21
22	pcg	1.27	#ifndef GVPE_CONF_H__
23			#define GVPE_CONF_H__
24	pcg	1.1
25	pcg	1.19	#include <vector>
26
27	pcg	1.11	#include <openssl/rsa.h>
28	pcg	1.1
29	pcg	1.2	#include "slog.h"
30	pcg	1.1	#include "global.h"
31
32	pcg	1.28	#define DEFAULT_REKEY 3600
33			#define DEFAULT_KEEPALIVE 60 // one keepalive/minute (it's just 8 bytes...)
34			#define DEFAULT_UDPPORT 655 // same as tinc, conflicts would be rare
35			#define DEFAULT_MTU 1500 // let's ether-net
36			#define DEFAULT_MAX_RETRY 3600 // retry at least this often
37
38			#define DEFAULT_DNS_TIMEOUT_FACTOR 8.F // initial retry timeout multiple
39			#define DEFAULT_DNS_SEND_INTERVAL .01F // minimum send interval
40			#define DEFAULT_DNS_OVERLAP_FACTOR .5F // RTT * LATENCY_FACTOR == sending rate
41			#define DEFAULT_DNS_MAX_OUTSTANDING 100 // max. number of outstanding requests
42	pcg	1.8
43	pcg	1.30	enum
44			{
45	pcg	1.13	PROT_UDPv4 = 0x01, // udp over ipv4
46			PROT_IPv4 = 0x02, // generic ip protocol
47	pcg	1.22	PROT_TCPv4 = 0x04, // tcp over ipv4 (server)
48	pcg	1.14	PROT_ICMPv4 = 0x08, // icmp over ipv4
49	pcg	1.22	PROT_DNSv4 = 0x10, // dns tunnel ipv4 (server)
50	pcg	1.8	};
51	pcg	1.1
52	pcg	1.26	#define PROT_RELIABLE (PROT_TCPv4 \| PROT_DNSv4)
53			#define PROT_SLOW PROT_DNSv4
54
55	pcg	1.10	// select the "best" protocol of the available ones
56			u8 best_protocol (u8 protset);
57			const char *strprotocol (u8 protocol);
58
59	pcg	1.30	struct conf_node
60			{
61	pcg	1.1	int id; // the id of this node, a 12-bit-number
62
63			RSA *rsa_key; // his public key
64			char *nodename; // nodename, an internal nickname.
65			char *hostname; // hostname, if known, or NULL.
66	pcg	1.29	char *if_up_data;
67	pcg	1.22	#if ENABLE_DNS
68			char *domain; // dns tunnel domain
69	pcg	1.24	#endif
70			char *dns_hostname;
71	pcg	1.22	u16 dns_port;
72	pcg	1.8
73	pcg	1.9	u8 protocols; // protocols this host can send & receive
74	pcg	1.22	u16 udp_port, tcp_port; // the port to bind to
75	pcg	1.21	int max_retry;
76	pcg	1.1
77	pcg	1.7	enum connectmode { C_ONDEMAND, C_NEVER, C_ALWAYS, C_DISABLED } connectmode;
78	pcg	1.1	bool compress;
79	pcg	1.4	bool inherit_tos; // inherit TOS in packets send to this destination
80	pcg	1.1
81	pcg	1.32	vector<const char *> allow_direct;
82			vector<const char *> deny_direct;
83
84	pcg	1.1	u32 routerprio;
85	pcg	1.32
86			bool can_direct (struct conf_node *other);
87	pcg	1.1
88			void print ();
89
90	pcg	1.12	~conf_node ();
91	pcg	1.1	};
92
93	pcg	1.30	struct configuration
94			{
95	pcg	1.1	typedef vector<conf_node *> node_vector;
96			node_vector nodes;
97			conf_node default_node;
98			conf_node *thisnode;
99	pcg	1.6	int mtu; // the mtu used for outgoing tunnel packets
100			double rekey; // rekey interval
101			double keepalive; // keepalive probes interval
102			char *ifname; // the interface name (tap0 ...)
103			bool ifpersist; // should the interface be persistent
104	pcg	1.1	char *prikeyfile;
105	pcg	1.9	RSA *rsa_key; // our private rsa key
106	pcg	1.2	loglevel llevel;
107	pcg	1.13	u8 ip_proto; // the ip protocol to use
108	pcg	1.15	#if ENABLE_ICMP
109	pcg	1.13	u8 icmp_type; // the icmp type for the icmp-protocol
110	pcg	1.15	#endif
111	pcg	1.1
112			char *script_if_up;
113			char *script_node_up;
114			char *script_node_down;
115	pcg	1.20	char *pidfilename;
116	pcg	1.12
117			#if ENABLE_HTTP_PROXY
118			char *proxy_auth; // login:password
119			char *proxy_host; // the proxy hostname, e.g. proxy1.example.net
120			u16 proxy_port; // the proxy port, e.g. 3128
121			#endif
122	pcg	1.23
123	pcg	1.24	#if ENABLE_DNS
124	pcg	1.22	char *dns_forw_host;
125			u16 dns_forw_port;
126	pcg	1.28	float dns_timeout_factor;
127			float dns_send_interval;
128			float dns_overlap_factor;
129			int dns_max_outstanding;
130	pcg	1.24	#endif
131	pcg	1.1
132			void init ();
133			void cleanup ();
134	pcg	1.30	void clear ();
135	pcg	1.1
136			// create a filename from string, replacing %s by the nodename
137			// and using relative paths under confbase.
138			char config_filename (const char name, const char *dflt);
139
140			void print ();
141
142			configuration ();
143			~configuration ();
144			};
145
146	pcg	1.30	struct configuration_parser
147			{
148			configuration &conf;
149
150			bool need_keys;
151			conf_node *node;
152
153			int argc;
154			char **argv;
155
156			configuration_parser (configuration &conf, bool need_keys, int argc, char **argv);
157
158			const char parse_line (char line);
159			void parse_argv ();
160			};
161
162	pcg	1.1	extern struct configuration conf;
163
164			#define THISNODE ::conf.thisnode
165
166			#endif
167