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