1 | /* |
1 | /* |
2 | conf.h -- configuration database |
2 | conf.h -- configuration database |
3 | Copyright (C) 2003-2004 Marc Lehmann <pcg@goof.com> |
3 | Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de> |
4 | |
4 | |
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5 | This file is part of GVPE. |
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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 | |
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20 | Additional permission under GNU GPL version 3 section 7 |
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21 | |
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22 | If you modify this Program, or any covered work, by linking or |
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23 | combining it with the OpenSSL project's OpenSSL library (or a modified |
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24 | version of that library), containing parts covered by the terms of the |
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25 | OpenSSL or SSLeay licenses, the licensors of this Program grant you |
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26 | additional permission to convey the resulting work. Corresponding |
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27 | Source for a non-source form of such a combination shall include the |
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28 | source code for the parts of OpenSSL used as well as that of the |
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29 | covered work. |
18 | */ |
30 | */ |
19 | |
31 | |
20 | #ifndef VPE_CONF_H__ |
32 | #ifndef GVPE_CONF_H__ |
21 | #define VPE_CONF_H__ |
33 | #define GVPE_CONF_H__ |
22 | |
34 | |
23 | #include <vector> |
35 | #include <vector> |
24 | |
36 | |
25 | #include <openssl/rsa.h> |
37 | #include <openssl/rsa.h> |
26 | |
38 | |
27 | #include "slog.h" |
39 | #include "slog.h" |
28 | #include "global.h" |
40 | #include "global.h" |
29 | |
41 | |
30 | #define DEFAULT_REKEY 3600 |
42 | #define DEFAULT_REKEY 3600 |
31 | #define DEFAULT_KEEPALIVE 60 // one keepalive/minute (it's just 8 bytes...) |
43 | #define DEFAULT_KEEPALIVE 60 // one keepalive/minute (it's just 8 bytes...) |
32 | #define DEFAULT_UDPPORT 655 // same as tinc, conflicts would be rare |
44 | #define DEFAULT_UDPPORT 655 // same as tinc, conflicts would be rare |
33 | #define DEFAULT_MTU 1500 // let's ether-net |
45 | #define DEFAULT_MTU 1500 // let's ether-net |
34 | #define DEFAULT_MAX_RETRY 28800 // retry at least this often |
46 | #define DEFAULT_MAX_RETRY 3600 // retry at least this often |
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47 | #define DEFAULT_MAX_TTL 60 // packets expire after this many seconds |
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48 | #define DEFAULT_MAX_QUEUE 512 // never queue more than this many packets |
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49 | |
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50 | #define DEFAULT_DNS_TIMEOUT_FACTOR 8.F // initial retry timeout multiple |
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51 | #define DEFAULT_DNS_SEND_INTERVAL .01F // minimum send interval |
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52 | #define DEFAULT_DNS_OVERLAP_FACTOR .5F // RTT * LATENCY_FACTOR == sending rate |
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53 | #define DEFAULT_DNS_MAX_OUTSTANDING 100 // max. number of outstanding requests |
35 | |
54 | |
36 | enum { |
55 | enum |
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56 | { |
37 | PROT_UDPv4 = 0x01, // udp over ipv4 |
57 | PROT_UDPv4 = 0x01, // udp over ipv4 |
38 | PROT_IPv4 = 0x02, // generic ip protocol |
58 | PROT_IPv4 = 0x02, // generic ip protocol |
39 | PROT_TCPv4 = 0x04, // tcp over ipv4 |
59 | PROT_TCPv4 = 0x04, // tcp over ipv4 (server) |
40 | PROT_ICMPv4 = 0x08, // icmp over ipv4 |
60 | PROT_ICMPv4 = 0x08, // icmp over ipv4 |
41 | PROT_DNSv4 = 0x10, // dns tunnel over ipv4 |
61 | PROT_DNSv4 = 0x10, // dns tunnel ipv4 (server) |
42 | }; |
62 | }; |
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63 | |
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64 | #define PROT_RELIABLE (PROT_TCPv4 | PROT_DNSv4) |
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65 | #define PROT_SLOW PROT_DNSv4 |
43 | |
66 | |
44 | // select the "best" protocol of the available ones |
67 | // select the "best" protocol of the available ones |
45 | u8 best_protocol (u8 protset); |
68 | u8 best_protocol (u8 protset); |
46 | const char *strprotocol (u8 protocol); |
69 | const char *strprotocol (u8 protocol); |
47 | |
70 | |
48 | struct conf_node { |
71 | struct conf_node |
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72 | { |
49 | int id; // the id of this node, a 12-bit-number |
73 | int id; // the id of this node, a 12-bit-number |
50 | |
74 | |
51 | RSA *rsa_key; // his public key |
75 | RSA *rsa_key; // his public key |
52 | char *nodename; // nodename, an internal nickname. |
76 | char *nodename; // nodename, an internal nickname. |
53 | |
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54 | char *hostname; // hostname, if known, or NULL. |
77 | char *hostname; // hostname, if known, or NULL. |
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78 | char *if_up_data; |
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79 | #if ENABLE_DNS |
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80 | char *domain; // dns tunnel domain |
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81 | #endif |
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82 | char *dns_hostname; |
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83 | u16 dns_port; |
55 | |
84 | |
56 | u8 protocols; // protocols this host can send & receive |
85 | u8 protocols; // protocols this host can send & receive |
57 | u16 udp_port, tcp_port, dns_port; // the port to bind to |
86 | u16 udp_port, tcp_port; // the port to bind to |
58 | int max_retry; |
87 | int max_retry; |
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88 | double max_ttl; // packets expire after this many seconds |
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89 | int max_queue; // maixmum send queue length |
59 | |
90 | |
60 | enum connectmode { C_ONDEMAND, C_NEVER, C_ALWAYS, C_DISABLED } connectmode; |
91 | enum connectmode { C_ONDEMAND, C_NEVER, C_ALWAYS, C_DISABLED } connectmode; |
61 | bool compress; |
92 | bool compress; |
62 | bool inherit_tos; // inherit TOS in packets send to this destination |
93 | bool inherit_tos; // inherit TOS in packets send to this destination |
63 | |
94 | |
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95 | vector<const char *> allow_direct; |
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96 | vector<const char *> deny_direct; |
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97 | |
64 | u32 routerprio; |
98 | u32 routerprio; |
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99 | |
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100 | u8 connectable_protocols () const |
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101 | { |
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102 | u8 protocols = this->protocols; |
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103 | |
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104 | // mask out endpoints we can't connect to |
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105 | if (!udp_port) protocols &= ~PROT_UDPv4; |
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106 | if (!tcp_port) protocols &= ~PROT_TCPv4; |
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107 | if (!dns_port) protocols &= ~PROT_DNSv4; |
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108 | |
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109 | return protocols; |
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110 | } |
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111 | |
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112 | bool may_direct (struct conf_node *other); |
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113 | void finalise (); |
65 | |
114 | |
66 | void print (); |
115 | void print (); |
67 | |
116 | |
68 | ~conf_node (); |
117 | ~conf_node (); |
69 | }; |
118 | }; |
70 | |
119 | |
71 | struct configuration { |
120 | struct configuration |
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121 | { |
72 | typedef vector<conf_node *> node_vector; |
122 | typedef vector<conf_node *> node_vector; |
73 | node_vector nodes; |
123 | node_vector nodes; |
74 | conf_node default_node; |
124 | conf_node default_node; |
75 | conf_node *thisnode; |
125 | conf_node *thisnode; |
76 | int mtu; // the mtu used for outgoing tunnel packets |
126 | int mtu; // the mtu used for outgoing tunnel packets |
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127 | int nfmark; // the SO_MARK // netfilter mark // fwmark |
77 | double rekey; // rekey interval |
128 | double rekey; // rekey interval |
78 | double keepalive; // keepalive probes interval |
129 | double keepalive; // keepalive probes interval |
79 | char *ifname; // the interface name (tap0 ...) |
130 | char *ifname; // the interface name (tap0 ...) |
80 | bool ifpersist; // should the interface be persistent |
131 | bool ifpersist; // should the interface be persistent |
81 | char *prikeyfile; |
132 | char *prikeyfile; |
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95 | char *proxy_auth; // login:password |
146 | char *proxy_auth; // login:password |
96 | char *proxy_host; // the proxy hostname, e.g. proxy1.example.net |
147 | char *proxy_host; // the proxy hostname, e.g. proxy1.example.net |
97 | u16 proxy_port; // the proxy port, e.g. 3128 |
148 | u16 proxy_port; // the proxy port, e.g. 3128 |
98 | #endif |
149 | #endif |
99 | |
150 | |
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151 | #if ENABLE_DNS |
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152 | char *dns_forw_host; |
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153 | u16 dns_forw_port; |
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154 | float dns_timeout_factor; |
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155 | float dns_send_interval; |
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156 | float dns_overlap_factor; |
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157 | int dns_max_outstanding; |
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158 | #endif |
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159 | |
100 | void init (); |
160 | void init (); |
101 | void cleanup (); |
161 | void cleanup (); |
102 | void read_config (bool need_keys); |
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103 | void clear_config (); |
162 | void clear (); |
104 | |
163 | |
105 | // create a filename from string, replacing %s by the nodename |
164 | // create a filename from string, replacing %s by the nodename |
106 | // and using relative paths under confbase. |
165 | // and using relative paths under confbase. |
107 | char *config_filename (const char *name, const char *dflt); |
166 | char *config_filename (const char *name, const char *dflt); |
108 | |
167 | |
… | |
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110 | |
169 | |
111 | configuration (); |
170 | configuration (); |
112 | ~configuration (); |
171 | ~configuration (); |
113 | }; |
172 | }; |
114 | |
173 | |
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174 | struct configuration_parser |
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175 | { |
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176 | configuration &conf; |
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177 | |
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178 | bool need_keys; |
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179 | conf_node *node; |
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180 | |
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181 | int argc; |
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182 | char **argv; |
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183 | |
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184 | configuration_parser (configuration &conf, bool need_keys, int argc, char **argv); |
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185 | |
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186 | const char *parse_line (char *line); |
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187 | void parse_argv (); |
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188 | }; |
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189 | |
115 | extern struct configuration conf; |
190 | extern struct configuration conf; |
116 | |
191 | |
117 | #define THISNODE ::conf.thisnode |
192 | #define THISNODE ::conf.thisnode |
118 | |
193 | |
119 | #endif |
194 | #endif |