1 | /* |
1 | /* |
2 | conf.h -- configuration database |
2 | conf.h -- configuration database |
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3 | Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de> |
3 | |
4 | |
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5 | This file is part of GVPE. |
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6 | |
4 | 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 |
5 | 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 |
6 | the Free Software Foundation; either version 2 of the License, or |
9 | Free Software Foundation; either version 3 of the License, or (at your |
7 | (at your option) any later version. |
10 | option) any later version. |
8 | |
11 | |
9 | 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 |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
12 | GNU General Public License for more details. |
15 | Public License for more details. |
13 | |
16 | |
14 | 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 |
15 | along with this program; if not, write to the Free Software |
18 | with this program; if not, see <http://www.gnu.org/licenses/>. |
16 | 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. |
17 | */ |
30 | */ |
18 | |
31 | |
19 | #ifndef VPE_CONF_H__ |
32 | #ifndef GVPE_CONF_H__ |
20 | #define VPE_CONF_H__ |
33 | #define GVPE_CONF_H__ |
21 | |
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22 | #include <sys/types.h> |
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23 | #include <sys/socket.h> |
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24 | #include <netdb.h> |
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25 | |
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26 | #ifdef HAVE_OPENSSL_RSA_H |
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27 | # include <openssl/rsa.h> |
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28 | #else |
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29 | # include <rsa.h> |
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30 | #endif |
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31 | |
34 | |
32 | #include <vector> |
35 | #include <vector> |
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36 | |
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37 | #include <openssl/rsa.h> |
33 | |
38 | |
34 | #include "slog.h" |
39 | #include "slog.h" |
35 | #include "global.h" |
40 | #include "global.h" |
36 | |
41 | |
37 | #define DEFAULT_REKEY 3600 |
42 | #define DEFAULT_REKEY 3600 |
38 | #define DEFAULT_KEEPALIVE 60 // one keepalive/minute (it's just 48 bytes...) |
43 | #define DEFAULT_KEEPALIVE 60 // one keepalive/minute (it's just 8 bytes...) |
39 | #define DEFAULT_PORT 655 // same as tinc, conflicts would be rara |
44 | #define DEFAULT_UDPPORT 655 // same as tinc, conflicts would be rare |
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45 | #define DEFAULT_MTU 1500 // let's ether-net |
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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 |
40 | |
54 | |
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55 | enum |
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56 | { |
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57 | PROT_UDPv4 = 0x01, // udp over ipv4 |
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58 | PROT_IPv4 = 0x02, // generic ip protocol |
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59 | PROT_TCPv4 = 0x04, // tcp over ipv4 (server) |
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60 | PROT_ICMPv4 = 0x08, // icmp over ipv4 |
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61 | PROT_DNSv4 = 0x10, // dns tunnel ipv4 (server) |
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62 | PROT_IPv42 = 0x20, // temporary hack to invetsigate packet loss |
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63 | PROT_EMPTY = 0x00 // not used |
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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 |
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68 | |
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69 | // select the "best" protocol of the available ones |
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70 | u8 best_protocol (u8 protset); |
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71 | const char *strprotocol (u8 protocol); |
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72 | |
41 | struct conf_node { |
73 | struct conf_node |
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74 | { |
42 | int id; // the id of this node, a 12-bit-number |
75 | int id; // the id of this node, a 12-bit-number |
43 | |
76 | |
44 | RSA *rsa_key; // his public key |
77 | RSA *rsa_key; // his public key |
45 | char *nodename; // nodename, an internal nickname. |
78 | char *nodename; // nodename, an internal nickname. |
46 | |
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47 | char *hostname; // hostname, if known, or NULL. |
79 | char *hostname; // hostname, if known, or NULL. |
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80 | char *if_up_data; |
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81 | #if ENABLE_DNS |
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82 | char *domain; // dns tunnel domain |
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83 | #endif |
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84 | char *dns_hostname; |
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85 | u16 dns_port; |
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86 | |
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87 | u8 protocols; // protocols this host can send & receive |
48 | u16 port; // the port to bind to |
88 | u16 udp_port, tcp_port; // the port to bind to |
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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 |
49 | |
92 | |
50 | enum connectmode { C_ONDEMAND, C_NEVER, C_ALWAYS } connectmode; |
93 | enum connectmode { C_ONDEMAND, C_NEVER, C_ALWAYS, C_DISABLED } connectmode; |
51 | bool compress; |
94 | bool compress; |
52 | bool inherit_tos; // inherit TOS in packets send to this destination |
95 | bool inherit_tos; // inherit TOS in packets send to this destination |
53 | u32 can_recv, can_send; |
96 | |
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97 | vector<const char *> allow_direct; |
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98 | vector<const char *> deny_direct; |
54 | |
99 | |
55 | u32 routerprio; |
100 | u32 routerprio; |
56 | |
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 | |
57 | void print (); |
117 | void print (); |
58 | |
118 | |
59 | conf_node() |
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60 | { |
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61 | memset (this, 0, sizeof *this); |
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62 | } |
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63 | |
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64 | ~conf_node () |
119 | ~conf_node (); |
65 | { |
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66 | if (rsa_key) |
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67 | RSA_free (rsa_key); |
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68 | |
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69 | free (nodename); |
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70 | free (hostname); |
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71 | } |
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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; |
79 | int mtu; // the mtu used for outgoing tunnel packets |
128 | int mtu; // the mtu used for outgoing tunnel packets |
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129 | int nfmark; // the SO_MARK // netfilter mark // fwmark |
80 | int rekey; // rekey interval |
130 | double rekey; // rekey interval |
81 | int keepalive; // keepalive probes interval |
131 | double keepalive; // keepalive probes interval |
82 | char *ifname; // the interface name (tap0 ...) |
132 | char *ifname; // the interface name (tap0 ...) |
83 | bool ifpersist; // should the interface be persistent |
133 | bool ifpersist; // should the interface be persistent |
84 | char *prikeyfile; |
134 | char *prikeyfile; |
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135 | RSA *rsa_key; // our private rsa key |
85 | loglevel llevel; |
136 | loglevel llevel; |
86 | RSA *rsa_key; // our private rsa key |
137 | u8 ip_proto; // the ip protocol to use |
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138 | #if 1//D2 |
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139 | u8 ip2_proto; // the ip protocol to use |
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140 | #endif |
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141 | #if ENABLE_ICMP |
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142 | u8 icmp_type; // the icmp type for the icmp-protocol |
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143 | #endif |
87 | |
144 | |
88 | char *script_if_up; |
145 | char *script_if_up; |
89 | char *script_node_up; |
146 | char *script_node_up; |
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147 | char *script_node_change; |
90 | char *script_node_down; |
148 | char *script_node_down; |
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149 | char *pidfilename; |
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150 | |
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151 | #if ENABLE_HTTP_PROXY |
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152 | char *proxy_auth; // login:password |
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153 | char *proxy_host; // the proxy hostname, e.g. proxy1.example.net |
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154 | u16 proxy_port; // the proxy port, e.g. 3128 |
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155 | #endif |
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156 | |
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157 | #if ENABLE_DNS |
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158 | char *dns_forw_host; |
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159 | bool dns_case_preserving; |
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160 | u16 dns_forw_port; |
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161 | float dns_timeout_factor; |
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162 | float dns_send_interval; |
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163 | float dns_overlap_factor; |
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164 | int dns_max_outstanding; |
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165 | #endif |
91 | |
166 | |
92 | void init (); |
167 | void init (); |
93 | void cleanup (); |
168 | void cleanup (); |
94 | void read_config (bool need_keys); |
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95 | void clear_config (); |
169 | void clear (); |
96 | |
170 | |
97 | // create a filename from string, replacing %s by the nodename |
171 | // create a filename from string, replacing %s by the nodename |
98 | // and using relative paths under confbase. |
172 | // and using relative paths under confbase. |
99 | char *config_filename (const char *name, const char *dflt); |
173 | char *config_filename (const char *name, const char *dflt = 0); |
100 | |
174 | |
101 | void print (); |
175 | void print (); |
102 | |
176 | |
103 | configuration (); |
177 | configuration (); |
104 | ~configuration (); |
178 | ~configuration (); |
105 | }; |
179 | }; |
106 | |
180 | |
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181 | struct configuration_parser |
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182 | { |
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183 | configuration &conf; |
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184 | |
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185 | bool need_keys; |
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186 | conf_node *node; |
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187 | |
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188 | int argc; |
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189 | char **argv; |
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190 | |
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191 | configuration_parser (configuration &conf, bool need_keys, int argc, char **argv); |
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192 | |
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193 | void parse_file (const char *fname); |
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194 | const char *parse_line (char *line); |
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195 | void parse_argv (); |
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196 | }; |
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197 | |
107 | extern struct configuration conf; |
198 | extern struct configuration conf; |
108 | |
199 | |
109 | #define THISNODE ::conf.thisnode |
200 | #define THISNODE ::conf.thisnode |
110 | |
201 | |
111 | #endif |
202 | #endif |