1 | /* |
1 | /* |
2 | conf.h -- configuration database |
2 | conf.h -- configuration database |
3 | Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de> |
3 | Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de> |
4 | |
4 | |
5 | This file is part of GVPE. |
5 | This file is part of GVPE. |
6 | |
6 | |
7 | GVPE is free software; you can redistribute it and/or modify |
7 | GVPE is free software; you can redistribute it and/or modify it |
8 | 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 |
9 | the Free Software Foundation; either version 2 of the License, or |
9 | Free Software Foundation; either version 3 of the License, or (at your |
10 | (at your option) any later version. |
10 | option) any later version. |
11 | |
11 | |
12 | 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 |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
15 | GNU General Public License for more details. |
15 | Public License for more details. |
16 | |
16 | |
17 | 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 |
18 | along with gvpe; if not, write to the Free Software |
18 | with this program; if not, see <http://www.gnu.org/licenses/>. |
19 | 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. |
20 | */ |
30 | */ |
21 | |
31 | |
22 | #ifndef VPE_CONF_H__ |
32 | #ifndef GVPE_CONF_H__ |
23 | #define VPE_CONF_H__ |
33 | #define GVPE_CONF_H__ |
24 | |
34 | |
25 | #include <vector> |
35 | #include <vector> |
26 | |
36 | |
27 | #include <openssl/rsa.h> |
37 | #include <openssl/rsa.h> |
28 | |
38 | |
29 | #include "slog.h" |
39 | #include "slog.h" |
30 | #include "global.h" |
40 | #include "global.h" |
31 | |
41 | |
32 | #define DEFAULT_REKEY 3600 |
42 | #define DEFAULT_REKEY 3607 // interval between rekeys |
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43 | #define DEFAULT_RESEED 3613 // interval between rng reseeds |
33 | #define DEFAULT_KEEPALIVE 60 // one keepalive/minute (it's just 8 bytes...) |
44 | #define DEFAULT_KEEPALIVE 60 // one keepalive/minute (it's just 8 bytes...) |
34 | #define DEFAULT_UDPPORT 655 // same as tinc, conflicts would be rare |
45 | #define DEFAULT_UDPPORT 655 // same as tinc, conflicts would be rare |
35 | #define DEFAULT_MTU 1500 // let's ether-net |
46 | #define DEFAULT_MTU 1500 // let's ether-net |
36 | #define DEFAULT_MAX_RETRY 28800 // retry at least this often |
47 | #define DEFAULT_MAX_RETRY 3600 // retry at least this often |
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48 | #define DEFAULT_MAX_TTL 60 // packets expire after this many seconds |
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49 | #define DEFAULT_MAX_QUEUE 512 // never queue more than this many packets |
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50 | |
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51 | #define DEFAULT_DNS_TIMEOUT_FACTOR 8.F // initial retry timeout multiple |
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52 | #define DEFAULT_DNS_SEND_INTERVAL .01F // minimum send interval |
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53 | #define DEFAULT_DNS_OVERLAP_FACTOR .5F // RTT * LATENCY_FACTOR == sending rate |
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54 | #define DEFAULT_DNS_MAX_OUTSTANDING 100 // max. number of outstanding requests |
37 | |
55 | |
38 | enum { |
56 | enum |
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57 | { |
39 | PROT_UDPv4 = 0x01, // udp over ipv4 |
58 | PROT_UDPv4 = 0x01, // udp over ipv4 |
40 | PROT_IPv4 = 0x02, // generic ip protocol |
59 | PROT_IPv4 = 0x02, // generic ip protocol |
41 | PROT_TCPv4 = 0x04, // tcp over ipv4 (server) |
60 | PROT_TCPv4 = 0x04, // tcp over ipv4 (server) |
42 | PROT_ICMPv4 = 0x08, // icmp over ipv4 |
61 | PROT_ICMPv4 = 0x08, // icmp over ipv4 |
43 | PROT_DNSv4 = 0x10, // dns tunnel ipv4 (server) |
62 | PROT_DNSv4 = 0x10, // dns tunnel ipv4 (server) |
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63 | PROT_ALL = 0x1f |
44 | }; |
64 | }; |
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65 | |
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66 | #define PROT_RELIABLE (PROT_TCPv4 | PROT_DNSv4) |
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67 | #define PROT_SLOW PROT_DNSv4 |
45 | |
68 | |
46 | // select the "best" protocol of the available ones |
69 | // select the "best" protocol of the available ones |
47 | u8 best_protocol (u8 protset); |
70 | u8 best_protocol (u8 protset); |
48 | const char *strprotocol (u8 protocol); |
71 | const char *strprotocol (u8 protocol); |
49 | |
72 | |
50 | struct conf_node { |
73 | struct conf_node |
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74 | { |
51 | int id; // the id of this node, a 12-bit-number |
75 | int id; // the id of this node, a 12-bit-number |
52 | |
76 | |
53 | RSA *rsa_key; // his public key |
77 | RSA *rsa_key; // his public key |
54 | char *nodename; // nodename, an internal nickname. |
78 | char *nodename; // nodename, an internal nickname. |
55 | char *hostname; // hostname, if known, or NULL. |
79 | char *hostname; // hostname, if known, or NULL. |
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80 | char *if_up_data; |
56 | #if ENABLE_DNS |
81 | #if ENABLE_DNS |
57 | char *domain; // dns tunnel domain |
82 | char *domain; // dns tunnel domain |
58 | #endif |
83 | #endif |
59 | char *dns_hostname; |
84 | char *dns_hostname; |
60 | u16 dns_port; |
85 | u16 dns_port; |
61 | |
86 | |
62 | u8 protocols; // protocols this host can send & receive |
87 | u8 protocols; // protocols this host can send & receive |
63 | u16 udp_port, tcp_port; // the port to bind to |
88 | u16 udp_port, tcp_port; // the port to bind to |
64 | int max_retry; |
89 | int max_retry; |
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90 | double max_ttl; // packets expire after this many seconds |
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91 | int max_queue; // maixmum send queue length |
65 | |
92 | |
66 | enum connectmode { C_ONDEMAND, C_NEVER, C_ALWAYS, C_DISABLED } connectmode; |
93 | enum connectmode { C_ONDEMAND, C_NEVER, C_ALWAYS, C_DISABLED } connectmode; |
67 | bool compress; |
94 | bool compress; |
68 | bool inherit_tos; // inherit TOS in packets send to this destination |
95 | bool inherit_tos; // inherit TOS in packets send to this destination |
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96 | bool low_power; // node is a low-power node (reduce cpu usage, wakeups and assume higher latency) |
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97 | |
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98 | vector<const char *> allow_direct; |
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99 | vector<const char *> deny_direct; |
69 | |
100 | |
70 | u32 routerprio; |
101 | u32 routerprio; |
71 | |
102 | |
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103 | u8 connectable_protocols () const |
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104 | { |
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105 | u8 protocols = this->protocols; |
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106 | |
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107 | // mask out endpoints we can't connect to |
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108 | if (!udp_port) protocols &= ~PROT_UDPv4; |
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109 | if (!tcp_port) protocols &= ~PROT_TCPv4; |
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110 | if (!dns_port) protocols &= ~PROT_DNSv4; |
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111 | |
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112 | return protocols; |
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113 | } |
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114 | |
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115 | bool may_direct (struct conf_node *other); |
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116 | void finalise (); |
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117 | |
72 | void print (); |
118 | void print (); |
73 | |
119 | |
74 | ~conf_node (); |
120 | ~conf_node (); |
75 | }; |
121 | }; |
76 | |
122 | |
77 | struct configuration { |
123 | struct configuration |
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124 | { |
78 | typedef vector<conf_node *> node_vector; |
125 | typedef vector<conf_node *> node_vector; |
79 | node_vector nodes; |
126 | node_vector nodes; |
80 | conf_node default_node; |
127 | conf_node default_node; |
81 | conf_node *thisnode; |
128 | conf_node *thisnode; |
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129 | char serial[SERIAL_SIZE]; |
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130 | char *seed_dev; // the randomd evice to use for seeding |
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131 | double reseed; // the interval between additional seeds |
82 | int mtu; // the mtu used for outgoing tunnel packets |
132 | int mtu; // the mtu used for outgoing tunnel packets |
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133 | int nfmark; // the SO_MARK // netfilter mark // fwmark |
83 | double rekey; // rekey interval |
134 | double rekey; // rekey interval |
84 | double keepalive; // keepalive probes interval |
135 | double keepalive; // keepalive probes interval |
85 | char *ifname; // the interface name (tap0 ...) |
136 | char *ifname; // the interface name (tap0 ...) |
86 | bool ifpersist; // should the interface be persistent |
137 | bool ifpersist; // should the interface be persistent |
87 | char *prikeyfile; |
138 | char *prikeyfile; |
88 | RSA *rsa_key; // our private rsa key |
139 | RSA *rsa_key; // our private rsa key |
89 | loglevel llevel; |
140 | loglevel llevel; |
90 | u8 ip_proto; // the ip protocol to use |
141 | u8 ip_proto; // the ip protocol to use |
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142 | uid_t change_uid; // the uid of the user to switch to, or 0 |
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143 | gid_t change_gid; // the gid of the user to switch to, or 0 |
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144 | char *change_root;// the path to chroot to, "/" == anonymous |
91 | #if ENABLE_ICMP |
145 | #if ENABLE_ICMP |
92 | u8 icmp_type; // the icmp type for the icmp-protocol |
146 | u8 icmp_type; // the icmp type for the icmp-protocol |
93 | #endif |
147 | #endif |
94 | |
148 | |
95 | char *script_if_up; |
149 | char *script_if_up; |
96 | char *script_node_up; |
150 | char *script_node_up; |
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151 | char *script_node_change; |
97 | char *script_node_down; |
152 | char *script_node_down; |
98 | char *pidfilename; |
153 | char *pidfilename; |
99 | |
154 | |
100 | #if ENABLE_HTTP_PROXY |
155 | #if ENABLE_HTTP_PROXY |
101 | char *proxy_auth; // login:password |
156 | char *proxy_auth; // login:password |
… | |
… | |
103 | u16 proxy_port; // the proxy port, e.g. 3128 |
158 | u16 proxy_port; // the proxy port, e.g. 3128 |
104 | #endif |
159 | #endif |
105 | |
160 | |
106 | #if ENABLE_DNS |
161 | #if ENABLE_DNS |
107 | char *dns_forw_host; |
162 | char *dns_forw_host; |
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163 | bool dns_case_preserving; |
108 | u16 dns_forw_port; |
164 | u16 dns_forw_port; |
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165 | float dns_timeout_factor; |
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166 | float dns_send_interval; |
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167 | float dns_overlap_factor; |
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168 | int dns_max_outstanding; |
109 | #endif |
169 | #endif |
110 | |
170 | |
111 | void init (); |
171 | void init (); |
112 | void cleanup (); |
172 | void cleanup (); |
113 | void read_config (bool need_keys); |
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114 | void clear_config (); |
173 | void clear (); |
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174 | |
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175 | conf_node *find_node (const char *name); |
115 | |
176 | |
116 | // create a filename from string, replacing %s by the nodename |
177 | // create a filename from string, replacing %s by the nodename |
117 | // and using relative paths under confbase. |
178 | // and using relative paths under confbase. |
118 | char *config_filename (const char *name, const char *dflt); |
179 | char *config_filename (const char *name, const char *dflt = 0); |
119 | |
180 | |
120 | void print (); |
181 | void print (); |
121 | |
182 | |
122 | configuration (); |
183 | configuration (); |
123 | ~configuration (); |
184 | ~configuration (); |
124 | }; |
185 | }; |
125 | |
186 | |
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187 | struct configuration_parser |
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188 | { |
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189 | configuration &conf; |
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190 | |
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191 | bool need_keys; |
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192 | conf_node *node; |
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193 | |
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194 | int argc; |
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195 | char **argv; |
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196 | |
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197 | configuration_parser (configuration &conf, bool need_keys, int argc, char **argv); |
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198 | |
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199 | void parse_file (const char *fname); |
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200 | const char *parse_line (char *line); |
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201 | void parse_argv (); |
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202 | }; |
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203 | |
126 | extern struct configuration conf; |
204 | extern struct configuration conf; |
127 | |
205 | |
128 | #define THISNODE ::conf.thisnode |
206 | #define THISNODE ::conf.thisnode |
129 | |
207 | |
130 | #endif |
208 | #endif |