1 | /* |
1 | /* |
2 | conf.h -- configuration database |
2 | conf.h -- configuration database |
3 | Copyright (C) 2003 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__ |
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34 | |
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35 | #include <vector> |
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36 | |
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37 | #include <sys/types.h> |
22 | |
38 | |
23 | #include <openssl/rsa.h> |
39 | #include <openssl/rsa.h> |
24 | |
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25 | #include <vector> |
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26 | |
40 | |
27 | #include "slog.h" |
41 | #include "slog.h" |
28 | #include "global.h" |
42 | #include "global.h" |
29 | |
43 | |
30 | #define DEFAULT_REKEY 3600 |
44 | #define DEFAULT_REKEY 3607 // interval between rekeys |
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45 | #define DEFAULT_RESEED 3613 // interval between rng reseeds |
31 | #define DEFAULT_KEEPALIVE 60 // one keepalive/minute (it's just 8 bytes...) |
46 | #define DEFAULT_KEEPALIVE 60 // one keepalive/minute (it's just 8 bytes...) |
32 | #define DEFAULT_UDPPORT 655 // same as tinc, conflicts would be rare |
47 | #define DEFAULT_UDPPORT 655 // same as tinc, conflicts would be rare |
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48 | #define DEFAULT_MTU 1500 // let's ether-net |
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49 | #define DEFAULT_MAX_RETRY 3600 // retry at least this often |
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50 | #define DEFAULT_MAX_TTL 60 // packets expire after this many seconds |
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51 | #define DEFAULT_MAX_QUEUE 512 // never queue more than this many packets |
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52 | |
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53 | #define DEFAULT_DNS_TIMEOUT_FACTOR 8.F // initial retry timeout multiple |
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54 | #define DEFAULT_DNS_SEND_INTERVAL .01F // minimum send interval |
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55 | #define DEFAULT_DNS_OVERLAP_FACTOR .5F // RTT * LATENCY_FACTOR == sending rate |
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56 | #define DEFAULT_DNS_MAX_OUTSTANDING 100 // max. number of outstanding requests |
33 | |
57 | |
34 | enum { |
58 | enum |
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59 | { |
35 | PROT_UDPv4 = 0x01, // udp over ipv4 |
60 | PROT_UDPv4 = 0x01, // udp over ipv4 |
36 | PROT_IPv4 = 0x02, // generic ip protocol |
61 | PROT_IPv4 = 0x02, // generic ip protocol |
37 | PROT_TCPv4 = 0x04, // tcp over ipv4 |
62 | PROT_TCPv4 = 0x04, // tcp over ipv4 (server) |
38 | PROT_ICMPv4 = 0x08, // icmp over ipv4 |
63 | PROT_ICMPv4 = 0x08, // icmp over ipv4 |
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64 | PROT_DNSv4 = 0x10, // dns tunnel ipv4 (server) |
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65 | PROT_ALL = 0x1f |
39 | }; |
66 | }; |
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67 | |
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68 | #define PROT_RELIABLE (PROT_TCPv4 | PROT_DNSv4) |
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69 | #define PROT_SLOW PROT_DNSv4 |
40 | |
70 | |
41 | // select the "best" protocol of the available ones |
71 | // select the "best" protocol of the available ones |
42 | u8 best_protocol (u8 protset); |
72 | u8 best_protocol (u8 protset); |
43 | const char *strprotocol (u8 protocol); |
73 | const char *strprotocol (u8 protocol); |
44 | |
74 | |
45 | struct conf_node { |
75 | struct conf_node |
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76 | { |
46 | int id; // the id of this node, a 12-bit-number |
77 | int id; // the id of this node, a 12-bit-number |
47 | |
78 | |
48 | RSA *rsa_key; // his public key |
79 | RSA *rsa_key; // his public key |
49 | char *nodename; // nodename, an internal nickname. |
80 | char *nodename; // nodename, an internal nickname. |
50 | |
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51 | char *hostname; // hostname, if known, or NULL. |
81 | char *hostname; // hostname, if known, or NULL. |
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82 | char *if_up_data; |
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83 | #if ENABLE_DNS |
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84 | char *domain; // dns tunnel domain |
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85 | #endif |
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86 | char *dns_hostname; |
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87 | u16 dns_port; |
52 | |
88 | |
53 | u8 protocols; // protocols this host can send & receive |
89 | u8 protocols; // protocols this host can send & receive |
54 | u16 udp_port, tcp_port; // the port to bind to |
90 | u16 udp_port, tcp_port; // the port to bind to |
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91 | int max_retry; |
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92 | double max_ttl; // packets expire after this many seconds |
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93 | int max_queue; // maixmum send queue length |
55 | |
94 | |
56 | enum connectmode { C_ONDEMAND, C_NEVER, C_ALWAYS, C_DISABLED } connectmode; |
95 | enum connectmode { C_ONDEMAND, C_NEVER, C_ALWAYS, C_DISABLED } connectmode; |
57 | bool compress; |
96 | bool compress; |
58 | bool inherit_tos; // inherit TOS in packets send to this destination |
97 | bool inherit_tos; // inherit TOS in packets send to this destination |
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98 | bool low_power; // node is a low-power node (reduce cpu usage, wakeups and assume higher latency) |
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99 | |
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100 | vector<const char *> allow_direct; |
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101 | vector<const char *> deny_direct; |
59 | |
102 | |
60 | u32 routerprio; |
103 | u32 routerprio; |
61 | |
104 | |
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105 | u8 connectable_protocols () const |
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106 | { |
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107 | u8 protocols = this->protocols; |
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108 | |
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109 | // mask out endpoints we can't connect to |
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110 | if (!udp_port) protocols &= ~PROT_UDPv4; |
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111 | if (!tcp_port) protocols &= ~PROT_TCPv4; |
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112 | if (!dns_port) protocols &= ~PROT_DNSv4; |
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113 | |
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114 | return protocols; |
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115 | } |
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116 | |
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117 | bool may_direct (struct conf_node *other); |
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118 | void finalise (); |
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119 | |
62 | void print (); |
120 | void print (); |
63 | |
121 | |
64 | ~conf_node (); |
122 | ~conf_node (); |
65 | }; |
123 | }; |
66 | |
124 | |
67 | struct configuration { |
125 | struct configuration |
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126 | { |
68 | typedef vector<conf_node *> node_vector; |
127 | typedef vector<conf_node *> node_vector; |
69 | node_vector nodes; |
128 | node_vector nodes; |
70 | conf_node default_node; |
129 | conf_node default_node; |
71 | conf_node *thisnode; |
130 | conf_node *thisnode; |
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131 | char serial[SERIAL_SIZE]; |
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132 | char *seed_dev; // the randomd evice to use for seeding |
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133 | double reseed; // the interval between additional seeds |
72 | int mtu; // the mtu used for outgoing tunnel packets |
134 | int mtu; // the mtu used for outgoing tunnel packets |
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135 | int nfmark; // the SO_MARK // netfilter mark // fwmark |
73 | double rekey; // rekey interval |
136 | double rekey; // rekey interval |
74 | double keepalive; // keepalive probes interval |
137 | double keepalive; // keepalive probes interval |
75 | char *ifname; // the interface name (tap0 ...) |
138 | char *ifname; // the interface name (tap0 ...) |
76 | bool ifpersist; // should the interface be persistent |
139 | bool ifpersist; // should the interface be persistent |
77 | char *prikeyfile; |
140 | char *prikeyfile; |
78 | RSA *rsa_key; // our private rsa key |
141 | RSA *rsa_key; // our private rsa key |
79 | loglevel llevel; |
142 | loglevel llevel; |
80 | u8 ip_proto; // the ip protocol to use |
143 | u8 ip_proto; // the ip protocol to use |
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144 | uid_t change_uid; // the uid of the user to switch to, or 0 |
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145 | gid_t change_gid; // the gid of the user to switch to, or 0 |
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146 | char *change_root;// the path to chroot to, "/" == anonymous |
81 | #if ENABLE_ICMP |
147 | #if ENABLE_ICMP |
82 | u8 icmp_type; // the icmp type for the icmp-protocol |
148 | u8 icmp_type; // the icmp type for the icmp-protocol |
83 | #endif |
149 | #endif |
84 | |
150 | |
85 | char *script_if_up; |
151 | char *script_if_up; |
86 | char *script_node_up; |
152 | char *script_node_up; |
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153 | char *script_node_change; |
87 | char *script_node_down; |
154 | char *script_node_down; |
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155 | char *pidfilename; |
88 | |
156 | |
89 | #if ENABLE_HTTP_PROXY |
157 | #if ENABLE_HTTP_PROXY |
90 | char *proxy_auth; // login:password |
158 | char *proxy_auth; // login:password |
91 | char *proxy_host; // the proxy hostname, e.g. proxy1.example.net |
159 | char *proxy_host; // the proxy hostname, e.g. proxy1.example.net |
92 | u16 proxy_port; // the proxy port, e.g. 3128 |
160 | u16 proxy_port; // the proxy port, e.g. 3128 |
93 | #endif |
161 | #endif |
94 | |
162 | |
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163 | #if ENABLE_DNS |
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164 | char *dns_forw_host; |
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165 | bool dns_case_preserving; |
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166 | u16 dns_forw_port; |
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167 | float dns_timeout_factor; |
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168 | float dns_send_interval; |
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169 | float dns_overlap_factor; |
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170 | int dns_max_outstanding; |
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171 | #endif |
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172 | |
95 | void init (); |
173 | void init (); |
96 | void cleanup (); |
174 | void cleanup (); |
97 | void read_config (bool need_keys); |
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98 | void clear_config (); |
175 | void clear (); |
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176 | |
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177 | conf_node *find_node (const char *name); |
99 | |
178 | |
100 | // create a filename from string, replacing %s by the nodename |
179 | // create a filename from string, replacing %s by the nodename |
101 | // and using relative paths under confbase. |
180 | // and using relative paths under confbase. |
102 | char *config_filename (const char *name, const char *dflt); |
181 | char *config_filename (const char *name, const char *dflt = 0); |
103 | |
182 | |
104 | void print (); |
183 | void print (); |
105 | |
184 | |
106 | configuration (); |
185 | configuration (); |
107 | ~configuration (); |
186 | ~configuration (); |
108 | }; |
187 | }; |
109 | |
188 | |
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189 | struct configuration_parser |
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190 | { |
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191 | configuration &conf; |
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192 | |
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193 | bool need_keys; |
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194 | conf_node *node; |
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195 | |
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196 | int argc; |
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197 | char **argv; |
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198 | |
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199 | configuration_parser (configuration &conf, bool need_keys, int argc, char **argv); |
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200 | |
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201 | void parse_file (const char *fname); |
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202 | const char *parse_line (char *line); |
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203 | void parse_argv (); |
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204 | }; |
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205 | |
110 | extern struct configuration conf; |
206 | extern struct configuration conf; |
111 | |
207 | |
112 | #define THISNODE ::conf.thisnode |
208 | #define THISNODE ::conf.thisnode |
113 | |
209 | |
114 | #endif |
210 | #endif |