1 | /* |
1 | /* |
2 | conf.c -- configuration code |
2 | conf.C -- configuration code |
3 | Copyright (C) 1998 Robert van der Meulen |
3 | Copyright (C) 2003-2008,2011 Marc Lehmann <gvpe@schmorp.de> |
4 | 1998-2002 Ivo Timmermans <ivo@o2w.nl> |
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5 | 2000-2002 Guus Sliepen <guus@sliepen.eu.org> |
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6 | 2000 Cris van Pelt <tribbel@arise.dhs.org> |
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7 | 2003 Marc Lehmann <pcg@goof.com> |
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8 | |
4 | |
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5 | This file is part of GVPE. |
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6 | |
9 | 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 |
10 | 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 |
11 | the Free Software Foundation; either version 2 of the License, or |
9 | Free Software Foundation; either version 3 of the License, or (at your |
12 | (at your option) any later version. |
10 | option) any later version. |
13 | |
11 | |
14 | 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 |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
17 | GNU General Public License for more details. |
15 | Public License for more details. |
18 | |
16 | |
19 | 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 |
20 | along with this program; if not, write to the Free Software |
18 | with this program; if not, see <http://www.gnu.org/licenses/>. |
21 | 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. |
22 | */ |
30 | */ |
23 | |
31 | |
24 | #include "config.h" |
32 | #include "config.h" |
25 | |
33 | |
26 | #include <cstdio> |
34 | #include <cstdio> |
… | |
… | |
30 | #include <errno.h> |
38 | #include <errno.h> |
31 | #include <netdb.h> |
39 | #include <netdb.h> |
32 | #include <sys/stat.h> |
40 | #include <sys/stat.h> |
33 | #include <sys/types.h> |
41 | #include <sys/types.h> |
34 | #include <unistd.h> |
42 | #include <unistd.h> |
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43 | #include <pwd.h> |
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44 | |
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45 | #include "netcompat.h" |
35 | |
46 | |
36 | #include <openssl/err.h> |
47 | #include <openssl/err.h> |
37 | #include <openssl/pem.h> |
48 | #include <openssl/pem.h> |
38 | #include <openssl/rsa.h> |
49 | #include <openssl/rsa.h> |
39 | #include <openssl/rand.h> |
50 | #include <openssl/rand.h> |
40 | |
51 | #include <openssl/bn.h> |
41 | #include "gettext.h" |
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42 | |
52 | |
43 | #include "conf.h" |
53 | #include "conf.h" |
44 | #include "slog.h" |
54 | #include "slog.h" |
45 | #include "util.h" |
55 | #include "util.h" |
46 | |
56 | |
47 | char *confbase; |
57 | char *confbase; |
48 | char *thisnode; |
58 | char *thisnode; |
49 | char *identname; |
59 | char *identname; |
50 | char *pidfilename; |
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51 | |
60 | |
52 | struct configuration conf; |
61 | struct configuration conf; |
53 | |
62 | |
54 | configuration::configuration () |
63 | u8 |
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64 | best_protocol (u8 protset) |
55 | { |
65 | { |
56 | init (); |
66 | if (protset & PROT_IPv4 ) return PROT_IPv4; |
57 | } |
67 | if (protset & PROT_ICMPv4) return PROT_ICMPv4; |
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68 | if (protset & PROT_UDPv4 ) return PROT_UDPv4; |
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69 | if (protset & PROT_TCPv4 ) return PROT_TCPv4; |
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70 | if (protset & PROT_DNSv4 ) return PROT_DNSv4; |
58 | |
71 | |
59 | configuration::~configuration () |
72 | return 0; |
60 | { |
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61 | cleanup (); |
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62 | } |
73 | } |
63 | |
74 | |
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75 | const char * |
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76 | strprotocol (u8 protocol) |
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77 | { |
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78 | if (protocol & PROT_IPv4 ) return "rawip"; |
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79 | if (protocol & PROT_ICMPv4) return "icmp"; |
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80 | if (protocol & PROT_UDPv4 ) return "udp"; |
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81 | if (protocol & PROT_TCPv4 ) return "tcp"; |
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82 | if (protocol & PROT_DNSv4 ) return "dns"; |
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83 | |
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84 | return "<unknown>"; |
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85 | } |
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86 | |
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87 | static bool |
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88 | match_list (const vector<const char *> &list, const char *str) |
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89 | { |
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90 | for (vector<const char *>::const_iterator i = list.end (); i-- > list.begin (); ) |
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91 | if ((*i)[0] == '*' && !(*i)[1]) |
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92 | return true; |
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93 | else if (!strcmp (*i, str)) |
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94 | return true; |
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95 | |
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96 | return false; |
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97 | } |
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98 | |
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99 | bool |
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100 | conf_node::may_direct (struct conf_node *other) |
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101 | { |
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102 | if (match_list (allow_direct, other->nodename)) |
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103 | return true; |
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104 | |
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105 | if (match_list (deny_direct, other->nodename)) |
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106 | return false; |
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107 | |
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108 | return true; |
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109 | } |
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110 | |
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111 | conf_node::~conf_node () |
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112 | { |
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113 | #if 0 |
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114 | // does not work, because string pointers etc. are shared |
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115 | // is not called, however |
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116 | if (rsa_key) |
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117 | RSA_free (rsa_key); |
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118 | |
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119 | free (nodename); |
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120 | free (hostname); |
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121 | free (if_up_data); |
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122 | #if ENABLE_DNS |
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123 | free (domain); |
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124 | free (dns_hostname); |
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125 | #endif |
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126 | #endif |
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127 | } |
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128 | |
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129 | void |
64 | void configuration::init () |
130 | configuration::init () |
65 | { |
131 | { |
66 | memset (this, 0, sizeof (*this)); |
132 | memset (this, 0, sizeof (*this)); |
67 | |
133 | |
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134 | mtu = DEFAULT_MTU; |
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135 | nfmark = 0; |
68 | rekey = DEFAULT_REKEY; |
136 | rekey = DEFAULT_REKEY; |
69 | keepalive = DEFAULT_KEEPALIVE; |
137 | keepalive = DEFAULT_KEEPALIVE; |
70 | llevel = L_INFO; |
138 | llevel = L_INFO; |
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139 | ip_proto = IPPROTO_GRE; |
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140 | #if ENABLE_ICMP |
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141 | icmp_type = ICMP_ECHOREPLY; |
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142 | #endif |
71 | |
143 | |
72 | default_node.port = DEFAULT_PORT; |
144 | default_node.udp_port = DEFAULT_UDPPORT; |
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145 | default_node.tcp_port = DEFAULT_UDPPORT; // ehrm |
73 | default_node.connectmode = conf_node::C_ALWAYS; |
146 | default_node.connectmode = conf_node::C_ALWAYS; |
74 | default_node.compress = true; |
147 | default_node.compress = true; |
75 | } |
148 | default_node.protocols = 0; |
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149 | default_node.max_retry = DEFAULT_MAX_RETRY; |
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150 | default_node.max_ttl = DEFAULT_MAX_TTL; |
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151 | default_node.max_queue = DEFAULT_MAX_QUEUE; |
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152 | default_node.if_up_data = strdup (""); |
76 | |
153 | |
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154 | #if ENABLE_DNS |
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155 | default_node.dns_port = 0; // default is 0 == client |
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156 | |
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157 | dns_case_preserving = true; |
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158 | dns_forw_host = strdup ("127.0.0.1"); |
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159 | dns_forw_port = 53; |
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160 | dns_timeout_factor = DEFAULT_DNS_TIMEOUT_FACTOR; |
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161 | dns_send_interval = DEFAULT_DNS_SEND_INTERVAL; |
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162 | dns_overlap_factor = DEFAULT_DNS_OVERLAP_FACTOR; |
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163 | dns_max_outstanding = DEFAULT_DNS_MAX_OUTSTANDING; |
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164 | #endif |
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165 | |
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166 | pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid"); |
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167 | seed_dev = strdup ("/dev/urandom"); |
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168 | reseed = DEFAULT_RESEED; |
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169 | } |
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170 | |
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171 | void |
77 | void configuration::cleanup() |
172 | configuration::cleanup () |
78 | { |
173 | { |
79 | if (rsa_key) |
174 | if (rsa_key) |
80 | RSA_free (rsa_key); |
175 | RSA_free (rsa_key); |
81 | |
176 | |
82 | free (ifname); |
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83 | |
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84 | rsa_key = 0; |
177 | rsa_key = 0; |
85 | ifname = 0; |
178 | |
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179 | free (seed_dev); seed_dev = 0; |
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180 | free (pidfilename); pidfilename = 0; |
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181 | free (ifname); ifname = 0; |
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182 | #if ENABLE_HTTP_PROXY |
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183 | free (proxy_host); proxy_host = 0; |
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184 | free (proxy_auth); proxy_auth = 0; |
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185 | #endif |
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186 | #if ENABLE_DNS |
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187 | free (dns_forw_host); dns_forw_host = 0; |
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188 | #endif |
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189 | free (change_root); change_root = 0; |
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190 | free (script_if_up); script_if_up = 0; |
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191 | free (script_node_up); script_node_up = 0; |
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192 | free (script_node_change); script_node_change = 0; |
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193 | free (script_node_down); script_node_down = 0; |
86 | } |
194 | } |
87 | |
195 | |
88 | void |
196 | void |
89 | configuration::clear_config () |
197 | configuration::clear () |
90 | { |
198 | { |
91 | for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i) |
199 | for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i) |
92 | delete *i; |
200 | delete *i; |
93 | |
201 | |
94 | nodes.clear (); |
202 | nodes.clear (); |
95 | |
203 | |
96 | cleanup (); |
204 | cleanup (); |
97 | init (); |
205 | init (); |
98 | } |
206 | } |
99 | |
207 | |
100 | void configuration::read_config (bool need_keys) |
208 | conf_node * |
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209 | configuration::find_node (const char *name) |
101 | { |
210 | { |
102 | char *fname; |
211 | for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i) |
103 | FILE *f; |
212 | if (!strcmp ((*i)->nodename, name)) |
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213 | return *i; |
104 | |
214 | |
105 | clear_config (); |
215 | return 0; |
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216 | } |
106 | |
217 | |
107 | asprintf (&fname, "%s/vped.conf", confbase); |
218 | //static bool |
108 | f = fopen (fname, "r"); |
219 | //is_true (const char *name) |
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220 | //{ |
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221 | //re |
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222 | //} |
109 | |
223 | |
110 | if (f) |
224 | #define parse_bool(target,name,trueval,falseval) do { \ |
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225 | if (!strcmp (val, "yes")) target = trueval; \ |
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226 | else if (!strcmp (val, "no")) target = falseval; \ |
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227 | else if (!strcmp (val, "true")) target = trueval; \ |
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228 | else if (!strcmp (val, "false")) target = falseval; \ |
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229 | else if (!strcmp (val, "on")) target = trueval; \ |
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230 | else if (!strcmp (val, "off")) target = falseval; \ |
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231 | else \ |
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232 | return _("illegal boolean value, only 'yes|true|on' or 'no|false|off' allowed, ignored"); \ |
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233 | } while (0) |
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234 | |
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235 | const char * |
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236 | configuration_parser::parse_line (char *line) |
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237 | { |
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238 | { |
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239 | char *end = line + strlen (line); |
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240 | |
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241 | while (*end < ' ' && end >= line) |
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242 | end--; |
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243 | |
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244 | *++end = 0; |
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245 | } |
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246 | |
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247 | char *tok = line; |
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248 | const char *var = strtok (tok, "\t ="); |
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249 | tok = 0; |
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250 | |
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251 | if (!var || !var[0]) |
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252 | return 0; /* no tokens on this line */ |
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253 | |
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254 | if (var[0] == '#') |
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255 | return 0; /* comment: ignore */ |
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256 | |
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257 | if (!strcmp (var, "global")) |
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258 | { |
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259 | node = &conf.default_node; |
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260 | return 0; |
111 | { |
261 | } |
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262 | |
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263 | char *val = strtok (NULL, "\t\n\r ="); |
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264 | |
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265 | if (!val || val[0] == '#') |
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266 | return _("no value given for variable, ignored"); |
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267 | |
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268 | else if (!strcmp (var, "on")) |
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269 | { |
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270 | if (::thisnode |
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271 | && ((val[0] == '!' && strcmp (val + 1, ::thisnode)) |
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272 | || !strcmp (val, ::thisnode))) |
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273 | return parse_line (strtok (NULL, "\n\r")); |
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274 | } |
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275 | |
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276 | else if (!strcmp (var, "include")) |
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277 | { |
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278 | char *fname = conf.config_filename (val); |
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279 | parse_file (fname); |
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280 | free (fname); |
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281 | } |
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282 | |
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283 | // truly global |
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284 | else if (!strcmp (var, "loglevel")) |
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285 | { |
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286 | loglevel l = string_to_loglevel (val); |
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287 | |
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288 | if (l == L_NONE) |
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289 | return _("unknown loglevel, ignored"); |
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290 | } |
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291 | else if (!strcmp (var, "serial")) |
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292 | strncpy (conf.serial, val, sizeof (conf.serial)); |
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293 | else if (!strcmp (var, "ip-proto")) |
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294 | conf.ip_proto = atoi (val); |
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295 | else if (!strcmp (var, "icmp-type")) |
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296 | { |
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297 | #if ENABLE_ICMP |
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298 | conf.icmp_type = atoi (val); |
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299 | #endif |
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300 | } |
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301 | else if (!strcmp (var, "chuser")) |
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302 | { |
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303 | struct passwd *pw = getpwnam (val); |
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304 | if (!pw) |
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305 | return _("user specified for chuser not found"); |
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306 | |
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307 | conf.change_uid = pw->pw_uid; |
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308 | conf.change_gid = pw->pw_gid; |
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309 | } |
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310 | else if (!strcmp (var, "chuid")) |
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311 | conf.change_uid = atoi (val); |
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312 | else if (!strcmp (var, "chgid")) |
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313 | conf.change_gid = atoi (val); |
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314 | else if (!strcmp (var, "chroot")) |
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315 | free (conf.change_root), conf.change_root = strdup (val); |
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316 | |
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317 | // per node |
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318 | else if (!strcmp (var, "node")) |
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319 | { |
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320 | node = conf.find_node (val); |
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321 | |
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322 | if (!node) |
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323 | { |
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324 | conf.default_node.id++; |
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325 | node = new conf_node (conf.default_node); |
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326 | conf.nodes.push_back (node); |
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327 | node->nodename = strdup (val); |
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328 | } |
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329 | } |
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330 | else if (!strcmp (var, "private-key")) |
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331 | free (conf.prikeyfile), conf.prikeyfile = strdup (val); |
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332 | else if (!strcmp (var, "ifpersist")) |
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333 | parse_bool (conf.ifpersist, "ifpersist", true, false); |
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334 | else if (!strcmp (var, "ifname")) |
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335 | free (conf.ifname), conf.ifname = strdup (val); |
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336 | else if (!strcmp (var, "rekey")) |
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337 | conf.rekey = atoi (val); |
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338 | else if (!strcmp (var, "keepalive")) |
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339 | conf.keepalive = atoi (val); |
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340 | else if (!strcmp (var, "mtu")) |
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341 | conf.mtu = atoi (val); |
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342 | else if (!strcmp (var, "nfmark")) |
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343 | conf.nfmark = atoi (val); |
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344 | else if (!strcmp (var, "seed-device")) |
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345 | free (conf.seed_dev), conf.seed_dev = strdup (val); |
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346 | else if (!strcmp (var, "seed-interval")) |
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347 | conf.reseed = atoi (val); |
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348 | else if (!strcmp (var, "if-up")) |
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349 | free (conf.script_if_up), conf.script_if_up = strdup (val); |
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350 | else if (!strcmp (var, "node-up")) |
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351 | free (conf.script_node_up), conf.script_node_up = strdup (val); |
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352 | else if (!strcmp (var, "node-change")) |
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353 | free (conf.script_node_change), conf.script_node_change = strdup (val); |
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354 | else if (!strcmp (var, "node-down")) |
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355 | free (conf.script_node_down), conf.script_node_down = strdup (val); |
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356 | else if (!strcmp (var, "pid-file")) |
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357 | free (conf.pidfilename), conf.pidfilename = strdup (val); |
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358 | else if (!strcmp (var, "dns-forw-host")) |
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359 | { |
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360 | #if ENABLE_DNS |
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361 | free (conf.dns_forw_host), conf.dns_forw_host = strdup (val); |
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362 | #endif |
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363 | } |
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364 | else if (!strcmp (var, "dns-forw-port")) |
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365 | { |
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366 | #if ENABLE_DNS |
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367 | conf.dns_forw_port = atoi (val); |
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368 | #endif |
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369 | } |
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370 | else if (!strcmp (var, "dns-timeout-factor")) |
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371 | { |
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372 | #if ENABLE_DNS |
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373 | conf.dns_timeout_factor = atof (val); |
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374 | #endif |
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375 | } |
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376 | else if (!strcmp (var, "dns-send-interval")) |
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377 | { |
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378 | #if ENABLE_DNS |
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379 | conf.dns_send_interval = atoi (val); |
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380 | #endif |
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381 | } |
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382 | else if (!strcmp (var, "dns-overlap-factor")) |
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383 | { |
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384 | #if ENABLE_DNS |
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385 | conf.dns_overlap_factor = atof (val); |
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386 | #endif |
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387 | } |
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388 | else if (!strcmp (var, "dns-max-outstanding")) |
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389 | { |
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390 | #if ENABLE_DNS |
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391 | conf.dns_max_outstanding = atoi (val); |
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392 | #endif |
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393 | } |
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394 | else if (!strcmp (var, "dns-case-preserving")) |
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395 | { |
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396 | #if ENABLE_DNS |
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397 | parse_bool (conf.dns_case_preserving, "dns-case-preserving", true, false); |
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398 | #endif |
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399 | } |
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400 | else if (!strcmp (var, "http-proxy-host")) |
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401 | { |
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402 | #if ENABLE_HTTP_PROXY |
|
|
403 | free (conf.proxy_host), conf.proxy_host = strdup (val); |
|
|
404 | #endif |
|
|
405 | } |
|
|
406 | else if (!strcmp (var, "http-proxy-port")) |
|
|
407 | { |
|
|
408 | #if ENABLE_HTTP_PROXY |
|
|
409 | conf.proxy_port = atoi (val); |
|
|
410 | #endif |
|
|
411 | } |
|
|
412 | else if (!strcmp (var, "http-proxy-auth")) |
|
|
413 | { |
|
|
414 | #if ENABLE_HTTP_PROXY |
|
|
415 | conf.proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val)); |
|
|
416 | #endif |
|
|
417 | } |
|
|
418 | |
|
|
419 | /* node-specific, non-defaultable */ |
|
|
420 | else if (node != &conf.default_node && !strcmp (var, "hostname")) |
|
|
421 | free (node->hostname), node->hostname = strdup (val); |
|
|
422 | |
|
|
423 | /* node-specific, defaultable */ |
|
|
424 | else if (!strcmp (var, "udp-port")) |
|
|
425 | node->udp_port = atoi (val); |
|
|
426 | else if (!strcmp (var, "tcp-port")) |
|
|
427 | node->tcp_port = atoi (val); |
|
|
428 | else if (!strcmp (var, "dns-hostname")) |
|
|
429 | { |
|
|
430 | #if ENABLE_DNS |
|
|
431 | free (node->dns_hostname), node->dns_hostname = strdup (val); |
|
|
432 | #endif |
|
|
433 | } |
|
|
434 | else if (!strcmp (var, "dns-port")) |
|
|
435 | { |
|
|
436 | #if ENABLE_DNS |
|
|
437 | node->dns_port = atoi (val); |
|
|
438 | #endif |
|
|
439 | } |
|
|
440 | else if (!strcmp (var, "dns-domain")) |
|
|
441 | { |
|
|
442 | #if ENABLE_DNS |
|
|
443 | free (node->domain), node->domain = strdup (val); |
|
|
444 | #endif |
|
|
445 | } |
|
|
446 | else if (!strcmp (var, "if-up-data")) |
|
|
447 | free (node->if_up_data), node->if_up_data = strdup (val); |
|
|
448 | else if (!strcmp (var, "router-priority")) |
|
|
449 | node->routerprio = atoi (val); |
|
|
450 | else if (!strcmp (var, "max-retry")) |
|
|
451 | node->max_retry = atoi (val); |
|
|
452 | else if (!strcmp (var, "connect")) |
|
|
453 | { |
|
|
454 | if (!strcmp (val, "ondemand")) |
|
|
455 | node->connectmode = conf_node::C_ONDEMAND; |
|
|
456 | else if (!strcmp (val, "never")) |
|
|
457 | node->connectmode = conf_node::C_NEVER; |
|
|
458 | else if (!strcmp (val, "always")) |
|
|
459 | node->connectmode = conf_node::C_ALWAYS; |
|
|
460 | else if (!strcmp (val, "disabled")) |
|
|
461 | node->connectmode = conf_node::C_DISABLED; |
|
|
462 | else |
|
|
463 | return _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', ignored"); |
|
|
464 | } |
|
|
465 | else if (!strcmp (var, "inherit-tos")) |
|
|
466 | parse_bool (node->inherit_tos, "inherit-tos", true, false); |
|
|
467 | else if (!strcmp (var, "compress")) |
|
|
468 | parse_bool (node->compress, "compress", true, false); |
|
|
469 | // all these bool options really really cost a lot of executable size! |
|
|
470 | else if (!strcmp (var, "enable-tcp")) |
|
|
471 | { |
|
|
472 | #if ENABLE_TCP |
|
|
473 | u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v; |
|
|
474 | #endif |
|
|
475 | } |
|
|
476 | else if (!strcmp (var, "enable-icmp")) |
|
|
477 | { |
|
|
478 | #if ENABLE_ICMP |
|
|
479 | u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v; |
|
|
480 | #endif |
|
|
481 | } |
|
|
482 | else if (!strcmp (var, "enable-dns")) |
|
|
483 | { |
|
|
484 | #if ENABLE_DNS |
|
|
485 | u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v; |
|
|
486 | #endif |
|
|
487 | } |
|
|
488 | else if (!strcmp (var, "enable-udp")) |
|
|
489 | { |
|
|
490 | u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v; |
|
|
491 | } |
|
|
492 | else if (!strcmp (var, "enable-rawip")) |
|
|
493 | { |
|
|
494 | u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v; |
|
|
495 | } |
|
|
496 | else if (!strcmp (var, "allow-direct")) |
|
|
497 | node->allow_direct.push_back (strdup (val)); |
|
|
498 | else if (!strcmp (var, "deny-direct")) |
|
|
499 | node->deny_direct.push_back (strdup (val)); |
|
|
500 | else if (!strcmp (var, "max-ttl")) |
|
|
501 | node->max_ttl = atof (val); |
|
|
502 | else if (!strcmp (var, "max-queue")) |
|
|
503 | node->max_queue = atoi (val); |
|
|
504 | |
|
|
505 | // unknown or misplaced |
|
|
506 | else |
|
|
507 | return _("unknown configuration directive - ignored"); |
|
|
508 | |
|
|
509 | return 0; |
|
|
510 | } |
|
|
511 | |
|
|
512 | void |
|
|
513 | conf_node::finalise () |
|
|
514 | { |
|
|
515 | if (max_queue < 1) |
|
|
516 | { |
|
|
517 | slog (L_WARN, _("%s: max-queue value invalid, setting it to 1."), nodename); |
|
|
518 | max_queue = 1; |
|
|
519 | } |
|
|
520 | |
|
|
521 | if (routerprio > 1 && (connectmode != C_ALWAYS && connectmode != C_DISABLED)) |
|
|
522 | { |
|
|
523 | //slog (L_WARN, _("%s: has non-zero router-priority but either 'never' or 'ondemand' as connectmode, setting it to 'always'."), nodename); |
|
|
524 | connectmode = C_ALWAYS; |
|
|
525 | } |
|
|
526 | } |
|
|
527 | |
|
|
528 | void |
|
|
529 | configuration_parser::parse_file (const char *fname) |
|
|
530 | { |
|
|
531 | if (FILE *f = fopen (fname, "r")) |
|
|
532 | { |
112 | char line[16384]; |
533 | char line [2048]; |
113 | int lineno = 0; |
534 | int lineno = 0; |
114 | char *var, *val; |
|
|
115 | conf_node *node = &default_node; |
|
|
116 | |
535 | |
117 | while (fgets (line, sizeof (line), f)) |
536 | while (fgets (line, sizeof (line), f)) |
118 | { |
537 | { |
119 | lineno++; |
538 | lineno++; |
120 | |
539 | |
121 | { |
540 | const char *warn = parse_line (line); |
122 | char *end = line + strlen (line); |
|
|
123 | |
541 | |
124 | while (*end < ' ' && end >= line) |
542 | if (warn) |
125 | end--; |
543 | slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno); |
126 | |
|
|
127 | *++end = 0; |
|
|
128 | } |
|
|
129 | |
|
|
130 | char *tok = line; |
|
|
131 | |
|
|
132 | retry: |
|
|
133 | var = strtok (tok, "\t ="); |
|
|
134 | tok = 0; |
|
|
135 | |
|
|
136 | if (!var || !var[0]) |
|
|
137 | continue; /* no tokens on this line */ |
|
|
138 | |
|
|
139 | if (var[0] == '#') |
|
|
140 | continue; /* comment: ignore */ |
|
|
141 | |
|
|
142 | val = strtok (NULL, "\t\n\r ="); |
|
|
143 | |
|
|
144 | if (!val || val[0] == '#') |
|
|
145 | { |
|
|
146 | slog (L_WARN, |
|
|
147 | _("no value for variable `%s', at '%s' line %d"), |
|
|
148 | var, fname, lineno); |
|
|
149 | break; |
|
|
150 | } |
|
|
151 | |
|
|
152 | if (!strcmp (var, "on")) |
|
|
153 | { |
|
|
154 | if (!::thisnode |
|
|
155 | || (val[0] == '!' && strcmp (val + 1, ::thisnode)) |
|
|
156 | || !strcmp (val, ::thisnode)) |
|
|
157 | goto retry; |
|
|
158 | |
|
|
159 | continue; |
|
|
160 | } |
|
|
161 | |
|
|
162 | // truly global |
|
|
163 | if (!strcmp (var, "loglevel")) |
|
|
164 | { |
|
|
165 | loglevel l = string_to_loglevel (val); |
|
|
166 | |
|
|
167 | if (l != L_NONE) |
|
|
168 | llevel = l; |
|
|
169 | else |
|
|
170 | slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line); |
|
|
171 | } |
|
|
172 | |
|
|
173 | // per config |
|
|
174 | else if (!strcmp (var, "node")) |
|
|
175 | { |
|
|
176 | default_node.id++; |
|
|
177 | |
|
|
178 | node = new conf_node (default_node); |
|
|
179 | |
|
|
180 | nodes.push_back (node); |
|
|
181 | |
|
|
182 | node->nodename = strdup (val); |
|
|
183 | |
|
|
184 | { |
|
|
185 | char *fname; |
|
|
186 | FILE *f; |
|
|
187 | |
|
|
188 | asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename); |
|
|
189 | |
|
|
190 | f = fopen (fname, "r"); |
|
|
191 | if (f) |
|
|
192 | { |
|
|
193 | node->rsa_key = RSA_new (); |
|
|
194 | |
|
|
195 | if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL)) |
|
|
196 | { |
|
|
197 | ERR_load_RSA_strings (); ERR_load_PEM_strings (); |
|
|
198 | slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); |
|
|
199 | exit (1); |
|
|
200 | } |
|
|
201 | |
|
|
202 | RSA_blinding_on (node->rsa_key, 0); |
|
|
203 | |
|
|
204 | fclose (f); |
|
|
205 | } |
|
|
206 | else |
|
|
207 | { |
|
|
208 | slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno)); |
|
|
209 | |
|
|
210 | if (need_keys) |
|
|
211 | exit (1); |
|
|
212 | } |
|
|
213 | |
|
|
214 | free (fname); |
|
|
215 | } |
|
|
216 | |
|
|
217 | if (!::thisnode || !strcmp (node->nodename, ::thisnode)) |
|
|
218 | thisnode = node; |
|
|
219 | } |
|
|
220 | else if (!strcmp (var, "private-key")) |
|
|
221 | prikeyfile = strdup (val); |
|
|
222 | else if (!strcmp (var, "ifpersist")) |
|
|
223 | { |
|
|
224 | if (!strcmp (val, "yes")) |
|
|
225 | ifpersist = true; |
|
|
226 | else if (!strcmp (val, "no")) |
|
|
227 | ifpersist = false; |
|
|
228 | else |
|
|
229 | slog (L_WARN, |
|
|
230 | _("illegal value for 'ifpersist', only 'yes' or 'no' allowed, at '%s' line %d"), |
|
|
231 | var, fname, lineno); |
|
|
232 | } |
|
|
233 | else if (!strcmp (var, "ifname")) |
|
|
234 | ifname = strdup (val); |
|
|
235 | else if (!strcmp (var, "rekey")) |
|
|
236 | rekey = atoi (val); |
|
|
237 | else if (!strcmp (var, "keepalive")) |
|
|
238 | keepalive = atoi (val); |
|
|
239 | else if (!strcmp (var, "mtu")) |
|
|
240 | mtu = atoi (val); |
|
|
241 | else if (!strcmp (var, "if-up")) |
|
|
242 | script_if_up = strdup (val); |
|
|
243 | else if (!strcmp (var, "node-up")) |
|
|
244 | script_node_up = strdup (val); |
|
|
245 | else if (!strcmp (var, "node-down")) |
|
|
246 | script_node_down = strdup (val); |
|
|
247 | |
|
|
248 | /* node-specific, non-defaultable */ |
|
|
249 | else if (node != &default_node && !strcmp (var, "hostname")) |
|
|
250 | { |
|
|
251 | free (node->hostname); |
|
|
252 | node->hostname = strdup (val); |
|
|
253 | } |
|
|
254 | |
|
|
255 | /* node-specific, defaultable */ |
|
|
256 | else if (!strcmp (var, "udp-port")) |
|
|
257 | node->port = atoi (val); |
|
|
258 | else if (!strcmp (var, "port")) //deprecated |
|
|
259 | node->port = atoi (val); |
|
|
260 | else if (!strcmp (var, "router-priority")) |
|
|
261 | node->routerprio = atoi (val); |
|
|
262 | else if (!strcmp (var, "connect")) |
|
|
263 | { |
|
|
264 | if (!strcmp (val, "ondemand")) |
|
|
265 | node->connectmode = conf_node::C_ONDEMAND; |
|
|
266 | else if (!strcmp (val, "never")) |
|
|
267 | node->connectmode = conf_node::C_NEVER; |
|
|
268 | else if (!strcmp (val, "always")) |
|
|
269 | node->connectmode = conf_node::C_ALWAYS; |
|
|
270 | else if (!strcmp (val, "disabled")) |
|
|
271 | node->connectmode = conf_node::C_DISABLED; |
|
|
272 | else |
|
|
273 | slog (L_WARN, |
|
|
274 | _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"), |
|
|
275 | var, fname, lineno); |
|
|
276 | } |
|
|
277 | else if (!strcmp (var, "inherit-tos")) |
|
|
278 | { |
|
|
279 | if (!strcmp (val, "yes")) |
|
|
280 | node->inherit_tos = true; |
|
|
281 | else if (!strcmp (val, "no")) |
|
|
282 | node->inherit_tos = false; |
|
|
283 | else |
|
|
284 | slog (L_WARN, |
|
|
285 | _("illegal value for 'compress', only 'yes' or 'no' allowed, at '%s' line %d"), |
|
|
286 | var, fname, lineno); |
|
|
287 | } |
|
|
288 | |
|
|
289 | else if (!strcmp (var, "compress")) |
|
|
290 | { |
|
|
291 | if (!strcmp (val, "yes")) |
|
|
292 | node->compress = true; |
|
|
293 | else if (!strcmp (val, "no")) |
|
|
294 | node->compress = false; |
|
|
295 | else |
|
|
296 | slog (L_WARN, |
|
|
297 | _("illegal value for 'compress', only 'yes' or 'no' allowed, at '%s' line %d"), |
|
|
298 | var, fname, lineno); |
|
|
299 | } |
|
|
300 | |
|
|
301 | // unknown or misplaced |
|
|
302 | else |
|
|
303 | { |
|
|
304 | slog (L_WARN, |
|
|
305 | _("unknown or misplaced variable `%s', at '%s' line %d"), |
|
|
306 | var, fname, lineno); |
|
|
307 | } |
|
|
308 | } |
544 | } |
309 | |
545 | |
310 | fclose (f); |
546 | fclose (f); |
311 | } |
547 | } |
312 | else |
548 | else |
313 | { |
549 | { |
314 | slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); |
550 | slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); |
315 | exit (1); |
551 | exit (EXIT_FAILURE); |
316 | } |
552 | } |
|
|
553 | } |
317 | |
554 | |
|
|
555 | configuration_parser::configuration_parser (configuration &conf, |
|
|
556 | bool need_keys, |
|
|
557 | int argc, |
|
|
558 | char **argv) |
|
|
559 | : conf (conf), need_keys (need_keys), argc (argc), argv (argv) |
|
|
560 | { |
|
|
561 | char *fname; |
|
|
562 | |
|
|
563 | conf.clear (); |
|
|
564 | node = &conf.default_node; |
|
|
565 | |
|
|
566 | asprintf (&fname, "%s/gvpe.conf", confbase); |
|
|
567 | parse_file (fname); |
318 | free (fname); |
568 | free (fname); |
319 | |
569 | |
320 | fname = config_filename (prikeyfile, "hostkey"); |
570 | fname = conf.config_filename (conf.prikeyfile, "hostkey"); |
321 | |
571 | |
322 | f = fopen (fname, "r"); |
572 | if (FILE *f = fopen (fname, "r")) |
323 | if (f) |
|
|
324 | { |
573 | { |
325 | rsa_key = RSA_new (); |
574 | conf.rsa_key = RSA_new (); |
326 | |
575 | |
327 | if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) |
576 | if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL)) |
328 | { |
577 | { |
329 | ERR_load_RSA_strings (); ERR_load_PEM_strings (); |
578 | ERR_load_RSA_strings (); ERR_load_PEM_strings (); |
330 | slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); |
579 | slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); |
331 | exit (1); |
580 | exit (EXIT_FAILURE); |
332 | } |
581 | } |
333 | |
582 | |
334 | RSA_blinding_on (rsa_key, 0); |
583 | require (RSA_blinding_on (conf.rsa_key, 0)); |
335 | |
584 | |
336 | fclose (f); |
585 | fclose (f); |
337 | } |
586 | } |
338 | else |
587 | else |
339 | { |
588 | { |
340 | slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno)); |
|
|
341 | |
|
|
342 | if (need_keys) |
589 | if (need_keys) |
343 | exit (1); |
590 | { |
|
|
591 | slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno)); |
|
|
592 | exit (EXIT_FAILURE); |
|
|
593 | } |
344 | } |
594 | } |
345 | |
595 | |
346 | free (fname); |
596 | free (fname); |
347 | } |
|
|
348 | |
597 | |
|
|
598 | fname = conf.config_filename (conf.pidfilename); |
|
|
599 | free (conf.pidfilename); conf.pidfilename = fname; |
|
|
600 | |
|
|
601 | for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i) |
|
|
602 | { |
|
|
603 | conf_node *node = *i; |
|
|
604 | char *fname; |
|
|
605 | FILE *f; |
|
|
606 | |
|
|
607 | asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename); |
|
|
608 | |
|
|
609 | f = fopen (fname, "r"); |
|
|
610 | if (f) |
|
|
611 | { |
|
|
612 | node->rsa_key = RSA_new (); |
|
|
613 | |
|
|
614 | if (!PEM_read_RSAPublicKey (f, &node->rsa_key, NULL, NULL)) |
|
|
615 | { |
|
|
616 | ERR_load_RSA_strings (); ERR_load_PEM_strings (); |
|
|
617 | slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); |
|
|
618 | exit (EXIT_FAILURE); |
|
|
619 | } |
|
|
620 | |
|
|
621 | require (RSA_blinding_on (node->rsa_key, 0)); |
|
|
622 | |
|
|
623 | fclose (f); |
|
|
624 | } |
|
|
625 | else |
|
|
626 | { |
|
|
627 | slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno)); |
|
|
628 | |
|
|
629 | if (need_keys) |
|
|
630 | exit (EXIT_FAILURE); |
|
|
631 | } |
|
|
632 | |
|
|
633 | free (fname); |
|
|
634 | |
|
|
635 | (*i)->finalise (); |
|
|
636 | } |
|
|
637 | |
|
|
638 | if (::thisnode) |
|
|
639 | { |
|
|
640 | conf.thisnode = conf.find_node (::thisnode); |
|
|
641 | |
|
|
642 | if (need_keys) |
|
|
643 | { |
|
|
644 | if (!conf.thisnode) |
|
|
645 | { |
|
|
646 | slog (L_NOTICE, _("local node ('%s') not found in config file, aborting."), ::thisnode); |
|
|
647 | exit (EXIT_FAILURE); |
|
|
648 | } |
|
|
649 | |
|
|
650 | if (conf.rsa_key && conf.thisnode->rsa_key) |
|
|
651 | if (BN_cmp (conf.rsa_key->n, conf.thisnode->rsa_key->n) != 0 |
|
|
652 | || BN_cmp (conf.rsa_key->e, conf.thisnode->rsa_key->e) != 0) |
|
|
653 | { |
|
|
654 | slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode); |
|
|
655 | exit (EXIT_FAILURE); |
|
|
656 | } |
|
|
657 | } |
|
|
658 | } |
|
|
659 | |
|
|
660 | parse_argv (); |
|
|
661 | } |
|
|
662 | |
|
|
663 | void |
|
|
664 | configuration_parser::parse_argv () |
|
|
665 | { |
|
|
666 | for (int i = 0; i < argc; ++i) |
|
|
667 | { |
|
|
668 | char *v = argv [i]; |
|
|
669 | |
|
|
670 | if (!*v) |
|
|
671 | continue; |
|
|
672 | |
|
|
673 | char *enode = v; |
|
|
674 | |
|
|
675 | while (*enode != '.' && *enode > ' ' && *enode != '=' && *enode) |
|
|
676 | enode++; |
|
|
677 | |
|
|
678 | if (*enode != '.') |
|
|
679 | enode = 0; |
|
|
680 | |
|
|
681 | if (enode) |
|
|
682 | { |
|
|
683 | char *val = strdup (v); |
|
|
684 | val [enode - v] = 0; |
|
|
685 | node = conf.find_node (val); |
|
|
686 | free (val); |
|
|
687 | |
|
|
688 | if (!node) |
|
|
689 | { |
|
|
690 | slog (L_WARN, _("command line option '%s' refers to unknown node, ignoring."), v); |
|
|
691 | continue; |
|
|
692 | } |
|
|
693 | } |
|
|
694 | else |
|
|
695 | node = &conf.default_node; |
|
|
696 | |
|
|
697 | const char *warn = parse_line (enode ? enode + 1 : v); |
|
|
698 | |
|
|
699 | if (warn) |
|
|
700 | slog (L_WARN, _("%s, while parsing command line option '%s'."), warn, v); |
|
|
701 | } |
|
|
702 | } |
|
|
703 | |
|
|
704 | char * |
349 | char *configuration::config_filename (const char *name, const char *dflt) |
705 | configuration::config_filename (const char *name, const char *dflt) |
350 | { |
706 | { |
351 | char *fname; |
707 | char *fname; |
352 | |
708 | |
353 | asprintf (&fname, name ? name : dflt, ::thisnode); |
709 | asprintf (&fname, name ? name : dflt, ::thisnode ? ::thisnode : "<unset>"); |
354 | |
710 | |
355 | if (!ABSOLUTE_PATH (fname)) |
711 | if (!ABSOLUTE_PATH (fname)) |
356 | { |
712 | { |
357 | char *rname = fname; |
713 | char *rname = fname; |
358 | asprintf (&fname, "%s/%s", confbase, rname); |
714 | asprintf (&fname, "%s/%s", confbase, rname); |
359 | free (rname); |
715 | free (rname); |
360 | } |
716 | } |
361 | |
717 | |
362 | return fname; |
718 | return fname; |
|
|
719 | } |
|
|
720 | |
|
|
721 | void |
|
|
722 | conf_node::print () |
|
|
723 | { |
|
|
724 | printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %02x %s%s%d\n", |
|
|
725 | id, |
|
|
726 | id >> 8, id & 0xff, |
|
|
727 | compress ? 'Y' : 'N', |
|
|
728 | connectmode == C_ONDEMAND ? "ondemand" |
|
|
729 | : connectmode == C_NEVER ? "never" |
|
|
730 | : connectmode == C_ALWAYS ? "always" |
|
|
731 | : connectmode == C_DISABLED ? "disabled" |
|
|
732 | : "", |
|
|
733 | nodename, |
|
|
734 | protocols, |
|
|
735 | hostname ? hostname : "", |
|
|
736 | hostname ? ":" : "", |
|
|
737 | hostname ? udp_port : 0 |
|
|
738 | ); |
363 | } |
739 | } |
364 | |
740 | |
365 | void |
741 | void |
366 | configuration::print () |
742 | configuration::print () |
367 | { |
743 | { |
… | |
… | |
371 | printf (_("MTU: %d\n"), mtu); |
747 | printf (_("MTU: %d\n"), mtu); |
372 | printf (_("rekeying interval: %d\n"), rekey); |
748 | printf (_("rekeying interval: %d\n"), rekey); |
373 | printf (_("keepalive interval: %d\n"), keepalive); |
749 | printf (_("keepalive interval: %d\n"), keepalive); |
374 | printf (_("interface: %s\n"), ifname); |
750 | printf (_("interface: %s\n"), ifname); |
375 | printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>"); |
751 | printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>"); |
376 | printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1); |
752 | printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1); |
377 | printf ("\n"); |
753 | printf ("\n"); |
378 | |
754 | |
379 | printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", |
755 | printf ("%4s %-17s %s %-8.8s %-10.10s %04s %s\n", |
380 | _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port")); |
756 | _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Prot"), _("Host:Port")); |
381 | |
757 | |
382 | for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i) |
758 | for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i) |
383 | (*i)->print (); |
759 | (*i)->print (); |
384 | |
760 | |
385 | printf ("\n"); |
761 | printf ("\n"); |
386 | } |
762 | } |
387 | |
763 | |
388 | void |
764 | configuration::configuration () |
389 | conf_node::print () |
|
|
390 | { |
765 | { |
391 | printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n", |
766 | asprintf (&confbase, "%s/gvpe", CONFDIR); |
392 | id, |
|
|
393 | id >> 8, id & 0xff, |
|
|
394 | compress ? 'Y' : 'N', |
|
|
395 | connectmode == C_ONDEMAND ? "ondemand" : |
|
|
396 | connectmode == C_NEVER ? "never" : |
|
|
397 | connectmode == C_ALWAYS ? "always" : "", |
|
|
398 | nodename, |
|
|
399 | hostname ? hostname : "", |
|
|
400 | hostname ? ":" : "", |
|
|
401 | hostname ? port : 0 |
|
|
402 | ); |
|
|
403 | } |
|
|
404 | |
767 | |
|
|
768 | init (); |
|
|
769 | } |
|
|
770 | |
|
|
771 | configuration::~configuration () |
|
|
772 | { |
|
|
773 | cleanup (); |
|
|
774 | } |
|
|
775 | |