1 | /* |
1 | /* |
2 | conf.h -- configuration database |
2 | conf.h -- configuration database |
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3 | Copyright (C) 2003-2005 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 |
5 | it under the terms of the GNU General Public License as published by |
8 | it under the terms of the GNU General Public License as published by |
6 | the Free Software Foundation; either version 2 of the License, or |
9 | the Free Software Foundation; either version 2 of the License, or |
7 | (at your option) any later version. |
10 | (at your 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, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | but 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 |
12 | GNU General Public License for more details. |
15 | GNU General 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 |
15 | along with this program; if not, write to the Free Software |
18 | along with gvpe; if not, write to the Free Software |
16 | Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
17 | */ |
20 | */ |
18 | |
21 | |
19 | #ifndef VPE_CONF_H__ |
22 | #ifndef GVPE_CONF_H__ |
20 | #define VPE_CONF_H__ |
23 | #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 | |
24 | |
32 | #include <vector> |
25 | #include <vector> |
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26 | |
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27 | #include <openssl/rsa.h> |
33 | |
28 | |
34 | #include "slog.h" |
29 | #include "slog.h" |
35 | #include "global.h" |
30 | #include "global.h" |
36 | |
31 | |
37 | #define DEFAULT_REKEY 3600 |
32 | #define DEFAULT_REKEY 3600 |
38 | #define DEFAULT_KEEPALIVE 60 // one keepalive/minute (it's just 8 bytes...) |
33 | #define DEFAULT_KEEPALIVE 60 // one keepalive/minute (it's just 8 bytes...) |
39 | #define DEFAULT_UDPPORT 655 // same as tinc, conflicts would be rare |
34 | #define DEFAULT_UDPPORT 655 // same as tinc, conflicts would be rare |
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35 | #define DEFAULT_MTU 1500 // let's ether-net |
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36 | #define DEFAULT_MAX_RETRY 3600 // retry at least this often |
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37 | #define DEFAULT_MAX_TTL 60 // packets expire after this many seconds |
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38 | #define DEFAULT_MAX_QUEUE 512 // never queue more than this many packets |
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39 | |
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40 | #define DEFAULT_DNS_TIMEOUT_FACTOR 8.F // initial retry timeout multiple |
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41 | #define DEFAULT_DNS_SEND_INTERVAL .01F // minimum send interval |
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42 | #define DEFAULT_DNS_OVERLAP_FACTOR .5F // RTT * LATENCY_FACTOR == sending rate |
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43 | #define DEFAULT_DNS_MAX_OUTSTANDING 100 // max. number of outstanding requests |
40 | |
44 | |
41 | enum { |
45 | enum |
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46 | { |
42 | PROT_UDPv4 = 1, // udp over ipv4 |
47 | PROT_UDPv4 = 0x01, // udp over ipv4 |
43 | PROT_IPv4 = 2, // generic ip protocol |
48 | PROT_IPv4 = 0x02, // generic ip protocol |
44 | PROT_TCPv4 = 4, // tcp over ipv4 (NYI) |
49 | PROT_TCPv4 = 0x04, // tcp over ipv4 (server) |
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50 | PROT_ICMPv4 = 0x08, // icmp over ipv4 |
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51 | PROT_DNSv4 = 0x10, // dns tunnel ipv4 (server) |
45 | }; |
52 | }; |
46 | |
53 | |
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54 | #define PROT_RELIABLE (PROT_TCPv4 | PROT_DNSv4) |
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55 | #define PROT_SLOW PROT_DNSv4 |
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56 | |
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57 | // select the "best" protocol of the available ones |
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58 | u8 best_protocol (u8 protset); |
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59 | const char *strprotocol (u8 protocol); |
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60 | |
47 | struct conf_node { |
61 | struct conf_node |
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62 | { |
48 | int id; // the id of this node, a 12-bit-number |
63 | int id; // the id of this node, a 12-bit-number |
49 | |
64 | |
50 | RSA *rsa_key; // his public key |
65 | RSA *rsa_key; // his public key |
51 | char *nodename; // nodename, an internal nickname. |
66 | char *nodename; // nodename, an internal nickname. |
52 | |
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53 | char *hostname; // hostname, if known, or NULL. |
67 | char *hostname; // hostname, if known, or NULL. |
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68 | char *if_up_data; |
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69 | #if ENABLE_DNS |
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70 | char *domain; // dns tunnel domain |
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71 | #endif |
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72 | char *dns_hostname; |
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73 | u16 dns_port; |
54 | |
74 | |
55 | u8 protocols; // protocols this host can send & receive |
75 | u8 protocols; // protocols this host can send & receive |
56 | u16 udp_port; // the port to bind to |
76 | u16 udp_port, tcp_port; // the port to bind to |
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77 | int max_retry; |
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78 | double max_ttl; // packets expire after this many seconds |
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79 | int max_queue; // maixmum send queue length |
57 | |
80 | |
58 | enum connectmode { C_ONDEMAND, C_NEVER, C_ALWAYS, C_DISABLED } connectmode; |
81 | enum connectmode { C_ONDEMAND, C_NEVER, C_ALWAYS, C_DISABLED } connectmode; |
59 | bool compress; |
82 | bool compress; |
60 | bool inherit_tos; // inherit TOS in packets send to this destination |
83 | bool inherit_tos; // inherit TOS in packets send to this destination |
61 | |
84 | |
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85 | vector<const char *> allow_direct; |
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86 | vector<const char *> deny_direct; |
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87 | |
62 | u32 routerprio; |
88 | u32 routerprio; |
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89 | |
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90 | bool can_direct (struct conf_node *other); |
63 | |
91 | |
64 | void print (); |
92 | void print (); |
65 | |
93 | |
66 | ~conf_node () |
94 | ~conf_node (); |
67 | { |
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68 | if (rsa_key) |
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69 | RSA_free (rsa_key); |
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70 | |
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71 | free (nodename); |
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72 | free (hostname); |
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73 | } |
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74 | }; |
95 | }; |
75 | |
96 | |
76 | struct configuration { |
97 | struct configuration |
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98 | { |
77 | typedef vector<conf_node *> node_vector; |
99 | typedef vector<conf_node *> node_vector; |
78 | node_vector nodes; |
100 | node_vector nodes; |
79 | conf_node default_node; |
101 | conf_node default_node; |
80 | conf_node *thisnode; |
102 | conf_node *thisnode; |
81 | int mtu; // the mtu used for outgoing tunnel packets |
103 | int mtu; // the mtu used for outgoing tunnel packets |
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84 | char *ifname; // the interface name (tap0 ...) |
106 | char *ifname; // the interface name (tap0 ...) |
85 | bool ifpersist; // should the interface be persistent |
107 | bool ifpersist; // should the interface be persistent |
86 | char *prikeyfile; |
108 | char *prikeyfile; |
87 | RSA *rsa_key; // our private rsa key |
109 | RSA *rsa_key; // our private rsa key |
88 | loglevel llevel; |
110 | loglevel llevel; |
89 | u8 ip_proto; // the ip protocol to use |
111 | u8 ip_proto; // the ip protocol to use |
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112 | #if ENABLE_ICMP |
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113 | u8 icmp_type; // the icmp type for the icmp-protocol |
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114 | #endif |
90 | |
115 | |
91 | char *script_if_up; |
116 | char *script_if_up; |
92 | char *script_node_up; |
117 | char *script_node_up; |
93 | char *script_node_down; |
118 | char *script_node_down; |
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119 | char *pidfilename; |
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120 | |
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121 | #if ENABLE_HTTP_PROXY |
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122 | char *proxy_auth; // login:password |
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123 | char *proxy_host; // the proxy hostname, e.g. proxy1.example.net |
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124 | u16 proxy_port; // the proxy port, e.g. 3128 |
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125 | #endif |
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126 | |
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127 | #if ENABLE_DNS |
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128 | char *dns_forw_host; |
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129 | u16 dns_forw_port; |
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130 | float dns_timeout_factor; |
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131 | float dns_send_interval; |
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132 | float dns_overlap_factor; |
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133 | int dns_max_outstanding; |
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134 | #endif |
94 | |
135 | |
95 | void init (); |
136 | void init (); |
96 | void cleanup (); |
137 | void cleanup (); |
97 | void read_config (bool need_keys); |
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98 | void clear_config (); |
138 | void clear (); |
99 | |
139 | |
100 | // create a filename from string, replacing %s by the nodename |
140 | // create a filename from string, replacing %s by the nodename |
101 | // and using relative paths under confbase. |
141 | // and using relative paths under confbase. |
102 | char *config_filename (const char *name, const char *dflt); |
142 | char *config_filename (const char *name, const char *dflt); |
103 | |
143 | |
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105 | |
145 | |
106 | configuration (); |
146 | configuration (); |
107 | ~configuration (); |
147 | ~configuration (); |
108 | }; |
148 | }; |
109 | |
149 | |
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150 | struct configuration_parser |
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151 | { |
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152 | configuration &conf; |
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153 | |
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154 | bool need_keys; |
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155 | conf_node *node; |
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156 | |
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157 | int argc; |
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158 | char **argv; |
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159 | |
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160 | configuration_parser (configuration &conf, bool need_keys, int argc, char **argv); |
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161 | |
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162 | const char *parse_line (char *line); |
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163 | void parse_argv (); |
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164 | }; |
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165 | |
110 | extern struct configuration conf; |
166 | extern struct configuration conf; |
111 | |
167 | |
112 | #define THISNODE ::conf.thisnode |
168 | #define THISNODE ::conf.thisnode |
113 | |
169 | |
114 | #endif |
170 | #endif |