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 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> |
… | |
… | |
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> |
35 | |
43 | |
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44 | #include "netcompat.h" |
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45 | |
36 | #include <openssl/err.h> |
46 | #include <openssl/err.h> |
37 | #include <openssl/pem.h> |
47 | #include <openssl/pem.h> |
38 | #include <openssl/rsa.h> |
48 | #include <openssl/rsa.h> |
39 | #include <openssl/rand.h> |
49 | #include <openssl/rand.h> |
40 | |
50 | #include <openssl/bn.h> |
41 | #include "gettext.h" |
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42 | |
51 | |
43 | #include "conf.h" |
52 | #include "conf.h" |
44 | #include "slog.h" |
53 | #include "slog.h" |
45 | #include "util.h" |
54 | #include "util.h" |
46 | |
55 | |
47 | char *confbase; |
56 | char *confbase; |
48 | char *thisnode; |
57 | char *thisnode; |
49 | char *identname; |
58 | char *identname; |
50 | char *pidfilename; |
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51 | |
59 | |
52 | struct configuration conf; |
60 | struct configuration conf; |
53 | |
61 | |
54 | configuration::configuration () |
62 | u8 best_protocol (u8 protset) |
55 | { |
63 | { |
56 | init (); |
64 | if (protset & PROT_IPv4 ) return PROT_IPv4; |
57 | } |
65 | if (protset & PROT_ICMPv4) return PROT_ICMPv4; |
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66 | if (protset & PROT_UDPv4 ) return PROT_UDPv4; |
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67 | if (protset & PROT_TCPv4 ) return PROT_TCPv4; |
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68 | if (protset & PROT_DNSv4 ) return PROT_DNSv4; |
58 | |
69 | |
59 | configuration::~configuration () |
70 | return 0; |
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71 | } |
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72 | |
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73 | const char *strprotocol (u8 protocol) |
60 | { |
74 | { |
61 | cleanup (); |
75 | if (protocol & PROT_IPv4 ) return "rawip"; |
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76 | if (protocol & PROT_ICMPv4) return "icmp"; |
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77 | if (protocol & PROT_UDPv4 ) return "udp"; |
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78 | if (protocol & PROT_TCPv4 ) return "tcp"; |
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79 | if (protocol & PROT_DNSv4 ) return "dns"; |
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80 | |
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81 | return "<unknown>"; |
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82 | } |
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83 | |
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84 | static bool |
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85 | match_list (const vector<const char *> &list, const char *str) |
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86 | { |
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87 | for (vector<const char *>::const_iterator i = list.end (); i-- > list.begin (); ) |
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88 | if ((*i)[0] == '*' && !(*i)[1]) |
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89 | return true; |
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90 | else if (!strcmp (*i, str)) |
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91 | return true; |
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92 | |
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93 | return false; |
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94 | } |
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95 | |
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96 | bool |
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97 | conf_node::may_direct (struct conf_node *other) |
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98 | { |
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99 | if (match_list (allow_direct, other->nodename)) |
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100 | return true; |
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101 | |
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102 | if (match_list (deny_direct, other->nodename)) |
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103 | return false; |
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104 | |
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105 | return true; |
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106 | } |
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107 | |
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108 | void |
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109 | conf_node::print () |
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110 | { |
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111 | printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n", |
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112 | id, |
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113 | id >> 8, id & 0xff, |
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114 | compress ? 'Y' : 'N', |
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115 | connectmode == C_ONDEMAND ? "ondemand" |
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116 | : connectmode == C_NEVER ? "never" |
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117 | : connectmode == C_ALWAYS ? "always" |
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118 | : connectmode == C_DISABLED ? "disabled" |
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119 | : "", |
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120 | nodename, |
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121 | hostname ? hostname : "", |
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122 | hostname ? ":" : "", |
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123 | hostname ? udp_port : 0 |
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124 | ); |
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125 | } |
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126 | |
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127 | conf_node::~conf_node () |
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128 | { |
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129 | #if 0 |
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130 | // does not work, because string pointers etc. are shared |
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131 | // is not called, however |
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132 | if (rsa_key) |
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133 | RSA_free (rsa_key); |
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134 | |
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135 | free (nodename); |
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136 | free (hostname); |
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137 | free (if_up_data); |
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138 | #if ENABLE_DNS |
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139 | free (domain); |
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140 | free (dns_hostname); |
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141 | #endif |
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142 | #endif |
62 | } |
143 | } |
63 | |
144 | |
64 | void configuration::init () |
145 | void configuration::init () |
65 | { |
146 | { |
66 | memset (this, 0, sizeof (*this)); |
147 | memset (this, 0, sizeof (*this)); |
67 | |
148 | |
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149 | mtu = DEFAULT_MTU; |
68 | rekey = DEFAULT_REKEY; |
150 | rekey = DEFAULT_REKEY; |
69 | keepalive = DEFAULT_KEEPALIVE; |
151 | keepalive = DEFAULT_KEEPALIVE; |
70 | llevel = L_INFO; |
152 | llevel = L_INFO; |
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153 | ip_proto = IPPROTO_GRE; |
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154 | #if ENABLE_ICMP |
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155 | icmp_type = ICMP_ECHOREPLY; |
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156 | #endif |
71 | |
157 | |
72 | default_node.port = DEFAULT_PORT; |
158 | default_node.udp_port = DEFAULT_UDPPORT; |
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159 | default_node.tcp_port = DEFAULT_UDPPORT; // ehrm |
73 | default_node.connectmode = conf_node::C_ALWAYS; |
160 | default_node.connectmode = conf_node::C_ALWAYS; |
74 | default_node.compress = true; |
161 | default_node.compress = true; |
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162 | default_node.protocols = 0; |
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163 | default_node.max_retry = DEFAULT_MAX_RETRY; |
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164 | default_node.max_ttl = DEFAULT_MAX_TTL; |
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165 | default_node.max_queue = DEFAULT_MAX_QUEUE; |
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166 | default_node.if_up_data = strdup (""); |
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167 | |
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168 | #if ENABLE_DNS |
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169 | default_node.dns_port = 0; // default is 0 == client |
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170 | |
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171 | dns_forw_host = strdup ("127.0.0.1"); |
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172 | dns_forw_port = 53; |
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173 | dns_timeout_factor = DEFAULT_DNS_TIMEOUT_FACTOR; |
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174 | dns_send_interval = DEFAULT_DNS_SEND_INTERVAL; |
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175 | dns_overlap_factor = DEFAULT_DNS_OVERLAP_FACTOR; |
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176 | dns_max_outstanding = DEFAULT_DNS_MAX_OUTSTANDING; |
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177 | #endif |
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178 | |
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179 | conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid"); |
75 | } |
180 | } |
76 | |
181 | |
77 | void configuration::cleanup() |
182 | void configuration::cleanup() |
78 | { |
183 | { |
79 | if (rsa_key) |
184 | if (rsa_key) |
80 | RSA_free (rsa_key); |
185 | RSA_free (rsa_key); |
81 | |
186 | |
82 | free (ifname); |
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83 | |
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84 | rsa_key = 0; |
187 | rsa_key = 0; |
85 | ifname = 0; |
188 | |
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189 | free (pidfilename); pidfilename = 0; |
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190 | free (ifname); ifname = 0; |
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191 | #if ENABLE_HTTP_PROXY |
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192 | free (proxy_host); proxy_host = 0; |
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193 | free (proxy_auth); proxy_auth = 0; |
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194 | #endif |
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195 | #if ENABLE_DNS |
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196 | free (dns_forw_host); dns_forw_host = 0; |
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197 | #endif |
86 | } |
198 | } |
87 | |
199 | |
88 | void |
200 | void |
89 | configuration::clear_config () |
201 | configuration::clear () |
90 | { |
202 | { |
91 | for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i) |
203 | for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i) |
92 | delete *i; |
204 | delete *i; |
93 | |
205 | |
94 | nodes.clear (); |
206 | nodes.clear (); |
95 | |
207 | |
96 | cleanup (); |
208 | cleanup (); |
97 | init (); |
209 | init (); |
98 | } |
210 | } |
99 | |
211 | |
100 | void configuration::read_config (bool need_keys) |
212 | #define parse_bool(target,name,trueval,falseval) do { \ |
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213 | if (!strcmp (val, "yes")) target = trueval; \ |
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214 | else if (!strcmp (val, "no")) target = falseval; \ |
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215 | else if (!strcmp (val, "true")) target = trueval; \ |
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216 | else if (!strcmp (val, "false")) target = falseval; \ |
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217 | else if (!strcmp (val, "on")) target = trueval; \ |
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218 | else if (!strcmp (val, "off")) target = falseval; \ |
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219 | else \ |
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220 | return _("illegal boolean value, only 'yes|true|on' or 'no|false|off' allowed. (ignored)"); \ |
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221 | } while (0) |
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222 | |
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223 | const char * |
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224 | configuration_parser::parse_line (char *line) |
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225 | { |
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226 | { |
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227 | char *end = line + strlen (line); |
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228 | |
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229 | while (*end < ' ' && end >= line) |
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230 | end--; |
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231 | |
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232 | *++end = 0; |
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233 | } |
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234 | |
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235 | char *tok = line; |
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236 | const char *var = strtok (tok, "\t ="); |
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237 | tok = 0; |
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238 | |
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239 | if (!var || !var[0]) |
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240 | return 0; /* no tokens on this line */ |
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241 | |
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242 | if (var[0] == '#') |
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243 | return 0; /* comment: ignore */ |
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244 | |
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245 | char *val = strtok (NULL, "\t\n\r ="); |
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246 | |
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247 | if (!val || val[0] == '#') |
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248 | return _("no value given for variable. (ignored)"); |
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249 | |
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250 | if (!strcmp (var, "on")) |
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251 | { |
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252 | if (!::thisnode |
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253 | || (val[0] == '!' && strcmp (val + 1, ::thisnode)) |
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254 | || !strcmp (val, ::thisnode)) |
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255 | return parse_line (strtok (NULL, "\n\r")); |
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256 | else |
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257 | return 0; |
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258 | } |
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259 | |
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260 | // truly global |
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261 | if (!strcmp (var, "loglevel")) |
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262 | { |
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263 | loglevel l = string_to_loglevel (val); |
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264 | |
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265 | if (l == L_NONE) |
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266 | return _("unknown loglevel. (skipping)"); |
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267 | } |
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268 | else if (!strcmp (var, "ip-proto")) |
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269 | conf.ip_proto = atoi (val); |
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270 | else if (!strcmp (var, "icmp-type")) |
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271 | { |
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272 | #if ENABLE_ICMP |
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273 | conf.icmp_type = atoi (val); |
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274 | #endif |
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275 | } |
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276 | |
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277 | // per config |
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278 | else if (!strcmp (var, "node")) |
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279 | { |
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280 | parse_argv (); |
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281 | |
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282 | conf.default_node.id++; |
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283 | node = new conf_node (conf.default_node); |
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284 | conf.nodes.push_back (node); |
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285 | node->nodename = strdup (val); |
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286 | |
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287 | { |
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288 | char *fname; |
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289 | FILE *f; |
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290 | |
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291 | asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename); |
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292 | |
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293 | f = fopen (fname, "r"); |
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294 | if (f) |
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295 | { |
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296 | node->rsa_key = RSA_new (); |
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297 | |
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298 | if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL)) |
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299 | { |
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300 | ERR_load_RSA_strings (); ERR_load_PEM_strings (); |
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301 | slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); |
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302 | exit (EXIT_FAILURE); |
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303 | } |
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304 | |
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305 | require (RSA_blinding_on (node->rsa_key, 0)); |
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306 | |
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307 | fclose (f); |
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308 | } |
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309 | else |
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310 | { |
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311 | slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno)); |
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312 | |
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313 | if (need_keys) |
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314 | exit (EXIT_FAILURE); |
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315 | } |
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316 | |
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317 | free (fname); |
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318 | } |
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319 | |
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320 | if (::thisnode && !strcmp (node->nodename, ::thisnode)) |
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321 | conf.thisnode = node; |
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322 | } |
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323 | else if (!strcmp (var, "private-key")) |
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324 | free (conf.prikeyfile), conf.prikeyfile = strdup (val); |
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325 | else if (!strcmp (var, "ifpersist")) |
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326 | parse_bool (conf.ifpersist, "ifpersist", true, false); |
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327 | else if (!strcmp (var, "ifname")) |
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328 | free (conf.ifname), conf.ifname = strdup (val); |
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329 | else if (!strcmp (var, "rekey")) |
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330 | conf.rekey = atoi (val); |
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331 | else if (!strcmp (var, "keepalive")) |
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332 | conf.keepalive = atoi (val); |
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333 | else if (!strcmp (var, "mtu")) |
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334 | conf.mtu = atoi (val); |
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335 | else if (!strcmp (var, "if-up")) |
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336 | free (conf.script_if_up), conf.script_if_up = strdup (val); |
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337 | else if (!strcmp (var, "node-up")) |
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338 | free (conf.script_node_up), conf.script_node_up = strdup (val); |
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339 | else if (!strcmp (var, "node-down")) |
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340 | free (conf.script_node_down), conf.script_node_down = strdup (val); |
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341 | else if (!strcmp (var, "pid-file")) |
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342 | free (conf.pidfilename), conf.pidfilename = strdup (val); |
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343 | else if (!strcmp (var, "dns-forw-host")) |
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344 | { |
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345 | #if ENABLE_DNS |
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346 | free (conf.dns_forw_host), conf.dns_forw_host = strdup (val); |
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347 | #endif |
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348 | } |
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349 | else if (!strcmp (var, "dns-forw-port")) |
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350 | { |
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351 | #if ENABLE_DNS |
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352 | conf.dns_forw_port = atoi (val); |
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353 | #endif |
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354 | } |
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355 | else if (!strcmp (var, "dns-timeout-factor")) |
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356 | { |
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357 | #if ENABLE_DNS |
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358 | conf.dns_timeout_factor = atof (val); |
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359 | #endif |
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360 | } |
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361 | else if (!strcmp (var, "dns-send-interval")) |
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362 | { |
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363 | #if ENABLE_DNS |
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364 | conf.dns_send_interval = atoi (val); |
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365 | #endif |
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366 | } |
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367 | else if (!strcmp (var, "dns-overlap-factor")) |
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368 | { |
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369 | #if ENABLE_DNS |
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370 | conf.dns_overlap_factor = atof (val); |
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371 | #endif |
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372 | } |
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373 | else if (!strcmp (var, "dns-max-outstanding")) |
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374 | { |
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375 | #if ENABLE_DNS |
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376 | conf.dns_max_outstanding = atoi (val); |
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377 | #endif |
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378 | } |
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379 | else if (!strcmp (var, "http-proxy-host")) |
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380 | { |
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381 | #if ENABLE_HTTP_PROXY |
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382 | free (conf.proxy_host), conf.proxy_host = strdup (val); |
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383 | #endif |
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384 | } |
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385 | else if (!strcmp (var, "http-proxy-port")) |
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386 | { |
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387 | #if ENABLE_HTTP_PROXY |
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388 | conf.proxy_port = atoi (val); |
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389 | #endif |
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390 | } |
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391 | else if (!strcmp (var, "http-proxy-auth")) |
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392 | { |
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393 | #if ENABLE_HTTP_PROXY |
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394 | conf.proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val)); |
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395 | #endif |
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396 | } |
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397 | |
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398 | /* node-specific, non-defaultable */ |
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399 | else if (node != &conf.default_node && !strcmp (var, "hostname")) |
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400 | free (node->hostname), node->hostname = strdup (val); |
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401 | |
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402 | /* node-specific, defaultable */ |
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403 | else if (!strcmp (var, "udp-port")) |
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404 | node->udp_port = atoi (val); |
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405 | else if (!strcmp (var, "tcp-port")) |
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406 | node->tcp_port = atoi (val); |
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|
407 | else if (!strcmp (var, "dns-hostname")) |
|
|
408 | { |
|
|
409 | #if ENABLE_DNS |
|
|
410 | free (node->dns_hostname), node->dns_hostname = strdup (val); |
|
|
411 | #endif |
|
|
412 | } |
|
|
413 | else if (!strcmp (var, "dns-port")) |
|
|
414 | { |
|
|
415 | #if ENABLE_DNS |
|
|
416 | node->dns_port = atoi (val); |
|
|
417 | #endif |
|
|
418 | } |
|
|
419 | else if (!strcmp (var, "dns-domain")) |
|
|
420 | { |
|
|
421 | #if ENABLE_DNS |
|
|
422 | free (node->domain), node->domain = strdup (val); |
|
|
423 | #endif |
|
|
424 | } |
|
|
425 | else if (!strcmp (var, "if-up-data")) |
|
|
426 | free (node->if_up_data), node->if_up_data = strdup (val); |
|
|
427 | else if (!strcmp (var, "router-priority")) |
|
|
428 | node->routerprio = atoi (val); |
|
|
429 | else if (!strcmp (var, "max-retry")) |
|
|
430 | node->max_retry = atoi (val); |
|
|
431 | else if (!strcmp (var, "connect")) |
|
|
432 | { |
|
|
433 | if (!strcmp (val, "ondemand")) |
|
|
434 | node->connectmode = conf_node::C_ONDEMAND; |
|
|
435 | else if (!strcmp (val, "never")) |
|
|
436 | node->connectmode = conf_node::C_NEVER; |
|
|
437 | else if (!strcmp (val, "always")) |
|
|
438 | node->connectmode = conf_node::C_ALWAYS; |
|
|
439 | else if (!strcmp (val, "disabled")) |
|
|
440 | node->connectmode = conf_node::C_DISABLED; |
|
|
441 | else |
|
|
442 | return _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled'. (ignored)"); |
|
|
443 | } |
|
|
444 | else if (!strcmp (var, "inherit-tos")) |
|
|
445 | parse_bool (node->inherit_tos, "inherit-tos", true, false); |
|
|
446 | else if (!strcmp (var, "compress")) |
|
|
447 | parse_bool (node->compress, "compress", true, false); |
|
|
448 | // all these bool options really really cost a lot of executable size! |
|
|
449 | else if (!strcmp (var, "enable-tcp")) |
|
|
450 | { |
|
|
451 | #if ENABLE_TCP |
|
|
452 | u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v; |
|
|
453 | #endif |
|
|
454 | } |
|
|
455 | else if (!strcmp (var, "enable-icmp")) |
|
|
456 | { |
|
|
457 | #if ENABLE_ICMP |
|
|
458 | u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v; |
|
|
459 | #endif |
|
|
460 | } |
|
|
461 | else if (!strcmp (var, "enable-dns")) |
|
|
462 | { |
|
|
463 | #if ENABLE_DNS |
|
|
464 | u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v; |
|
|
465 | #endif |
|
|
466 | } |
|
|
467 | else if (!strcmp (var, "enable-udp")) |
|
|
468 | { |
|
|
469 | u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v; |
|
|
470 | } |
|
|
471 | else if (!strcmp (var, "enable-rawip")) |
|
|
472 | { |
|
|
473 | u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v; |
|
|
474 | } |
|
|
475 | else if (!strcmp (var, "allow-direct")) |
|
|
476 | node->allow_direct.push_back (strdup (val)); |
|
|
477 | else if (!strcmp (var, "deny-direct")) |
|
|
478 | node->deny_direct.push_back (strdup (val)); |
|
|
479 | else if (!strcmp (var, "max-ttl")) |
|
|
480 | node->max_ttl = atof (val); |
|
|
481 | else if (!strcmp (var, "max-queue")) |
|
|
482 | node->max_queue = atoi (val); |
|
|
483 | |
|
|
484 | // unknown or misplaced |
|
|
485 | else |
|
|
486 | return _("unknown configuration directive. (ignored)"); |
|
|
487 | |
|
|
488 | return 0; |
|
|
489 | } |
|
|
490 | |
|
|
491 | void conf_node::finalise () |
|
|
492 | { |
|
|
493 | if (max_queue < 1) |
|
|
494 | { |
|
|
495 | slog (L_WARN, _("%s: max-queue value invalid, setting it to 1."), nodename); |
|
|
496 | max_queue = 1; |
|
|
497 | } |
|
|
498 | |
|
|
499 | if (routerprio && (connectmode != C_ALWAYS && connectmode != C_DISABLED)) |
|
|
500 | { |
|
|
501 | slog (L_WARN, _("%s: has non-zero router-priority but either 'never' or 'ondemand' as connectmode, setting it to 'always'."), nodename); |
|
|
502 | connectmode = C_ALWAYS; |
|
|
503 | } |
|
|
504 | } |
|
|
505 | |
|
|
506 | void configuration_parser::parse_argv () |
|
|
507 | { |
|
|
508 | for (int i = 0; i < argc; ++i) |
|
|
509 | { |
|
|
510 | char *v = argv [i]; |
|
|
511 | |
|
|
512 | if (!*v) |
|
|
513 | continue; |
|
|
514 | |
|
|
515 | char *enode = v; |
|
|
516 | |
|
|
517 | while (*enode != '.' && *enode > ' ' && *enode != '=' && *enode) |
|
|
518 | enode++; |
|
|
519 | |
|
|
520 | if (*enode != '.') |
|
|
521 | enode = 0; |
|
|
522 | |
|
|
523 | char *wnode = node == &conf.default_node |
|
|
524 | ? 0 |
|
|
525 | : node->nodename; |
|
|
526 | |
|
|
527 | if ((!wnode && !enode) |
|
|
528 | || (wnode && enode && !strncmp (wnode, v, enode - v))) |
|
|
529 | { |
|
|
530 | const char *warn = parse_line (enode ? enode + 1 : v); |
|
|
531 | |
|
|
532 | if (warn) |
|
|
533 | slog (L_WARN, _("%s, while parsing command line option '%s'."), warn, v); |
|
|
534 | |
|
|
535 | *v = 0; |
|
|
536 | } |
|
|
537 | } |
|
|
538 | } |
|
|
539 | |
|
|
540 | configuration_parser::configuration_parser (configuration &conf, |
|
|
541 | bool need_keys, |
|
|
542 | int argc, |
|
|
543 | char **argv) |
|
|
544 | : conf (conf),need_keys (need_keys), argc (argc), argv (argv) |
101 | { |
545 | { |
102 | char *fname; |
546 | char *fname; |
103 | FILE *f; |
547 | FILE *f; |
104 | |
548 | |
105 | clear_config (); |
549 | conf.clear (); |
106 | |
550 | |
107 | asprintf (&fname, "%s/vped.conf", confbase); |
551 | asprintf (&fname, "%s/gvpe.conf", confbase); |
108 | f = fopen (fname, "r"); |
552 | f = fopen (fname, "r"); |
109 | |
553 | |
110 | if (f) |
554 | if (f) |
111 | { |
555 | { |
112 | char line[16384]; |
556 | char line[16384]; |
113 | int lineno = 0; |
557 | int lineno = 0; |
114 | char *var, *val; |
558 | node = &conf.default_node; |
115 | conf_node *node = &default_node; |
|
|
116 | |
559 | |
117 | while (fgets (line, sizeof (line), f)) |
560 | while (fgets (line, sizeof (line), f)) |
118 | { |
561 | { |
119 | lineno++; |
562 | lineno++; |
120 | |
563 | |
121 | { |
564 | const char *warn = parse_line (line); |
122 | char *end = line + strlen (line); |
|
|
123 | |
565 | |
124 | while (*end < ' ' && end >= line) |
566 | if (warn) |
125 | end--; |
567 | 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, "port")) |
|
|
257 | node->port = atoi (val); |
|
|
258 | else if (!strcmp (var, "router-priority")) |
|
|
259 | node->routerprio = atoi (val); |
|
|
260 | else if (!strcmp (var, "connect")) |
|
|
261 | { |
|
|
262 | if (!strcmp (val, "ondemand")) |
|
|
263 | node->connectmode = conf_node::C_ONDEMAND; |
|
|
264 | else if (!strcmp (val, "never")) |
|
|
265 | node->connectmode = conf_node::C_NEVER; |
|
|
266 | else if (!strcmp (val, "always")) |
|
|
267 | node->connectmode = conf_node::C_ALWAYS; |
|
|
268 | else |
|
|
269 | slog (L_WARN, |
|
|
270 | _("illegal value for 'connectmode', use one of 'ondemand', 'never' or 'always', at '%s' line %d"), |
|
|
271 | var, fname, lineno); |
|
|
272 | } |
|
|
273 | else if (!strcmp (var, "compress")) |
|
|
274 | { |
|
|
275 | if (!strcmp (val, "yes")) |
|
|
276 | node->compress = true; |
|
|
277 | else if (!strcmp (val, "no")) |
|
|
278 | node->compress = false; |
|
|
279 | else |
|
|
280 | slog (L_WARN, |
|
|
281 | _("illegal value for 'compress', only 'yes' or 'no' allowed, at '%s' line %d"), |
|
|
282 | var, fname, lineno); |
|
|
283 | } |
|
|
284 | |
|
|
285 | // unknown or misplaced |
|
|
286 | else |
|
|
287 | { |
|
|
288 | slog (L_WARN, |
|
|
289 | _("unknown or misplaced variable `%s', at '%s' line %d"), |
|
|
290 | var, fname, lineno); |
|
|
291 | } |
|
|
292 | } |
568 | } |
293 | |
569 | |
294 | fclose (f); |
570 | fclose (f); |
|
|
571 | |
|
|
572 | parse_argv (); |
295 | } |
573 | } |
296 | else |
574 | else |
297 | { |
575 | { |
298 | slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); |
576 | slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); |
299 | exit (1); |
577 | exit (EXIT_FAILURE); |
300 | } |
578 | } |
301 | |
579 | |
302 | free (fname); |
580 | free (fname); |
303 | |
581 | |
304 | fname = config_filename (prikeyfile, "hostkey"); |
582 | fname = conf.config_filename (conf.prikeyfile, "hostkey"); |
305 | |
583 | |
306 | f = fopen (fname, "r"); |
584 | f = fopen (fname, "r"); |
307 | if (f) |
585 | if (f) |
308 | { |
586 | { |
309 | rsa_key = RSA_new (); |
587 | conf.rsa_key = RSA_new (); |
310 | |
588 | |
311 | if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) |
589 | if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL)) |
312 | { |
590 | { |
313 | ERR_load_RSA_strings (); ERR_load_PEM_strings (); |
591 | ERR_load_RSA_strings (); ERR_load_PEM_strings (); |
314 | slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); |
592 | slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); |
315 | exit (1); |
593 | exit (EXIT_FAILURE); |
316 | } |
594 | } |
317 | |
595 | |
318 | RSA_blinding_on (rsa_key, 0); |
596 | require (RSA_blinding_on (conf.rsa_key, 0)); |
319 | |
597 | |
320 | fclose (f); |
598 | fclose (f); |
321 | } |
599 | } |
322 | else |
600 | else |
323 | { |
601 | { |
324 | slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno)); |
602 | slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno)); |
325 | |
603 | |
326 | if (need_keys) |
604 | if (need_keys) |
327 | exit (1); |
605 | exit (EXIT_FAILURE); |
|
|
606 | } |
|
|
607 | |
|
|
608 | if (need_keys && ::thisnode |
|
|
609 | && conf.rsa_key && conf.thisnode && conf.thisnode->rsa_key) |
|
|
610 | if (BN_cmp (conf.rsa_key->n, conf.thisnode->rsa_key->n) != 0 |
|
|
611 | || BN_cmp (conf.rsa_key->e, conf.thisnode->rsa_key->e) != 0) |
|
|
612 | { |
|
|
613 | slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode); |
|
|
614 | exit (EXIT_FAILURE); |
328 | } |
615 | } |
329 | |
616 | |
330 | free (fname); |
617 | free (fname); |
|
|
618 | |
|
|
619 | for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i) |
|
|
620 | (*i)->finalise (); |
331 | } |
621 | } |
332 | |
622 | |
333 | char *configuration::config_filename (const char *name, const char *dflt) |
623 | char *configuration::config_filename (const char *name, const char *dflt) |
334 | { |
624 | { |
335 | char *fname; |
625 | char *fname; |
… | |
… | |
355 | printf (_("MTU: %d\n"), mtu); |
645 | printf (_("MTU: %d\n"), mtu); |
356 | printf (_("rekeying interval: %d\n"), rekey); |
646 | printf (_("rekeying interval: %d\n"), rekey); |
357 | printf (_("keepalive interval: %d\n"), keepalive); |
647 | printf (_("keepalive interval: %d\n"), keepalive); |
358 | printf (_("interface: %s\n"), ifname); |
648 | printf (_("interface: %s\n"), ifname); |
359 | printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>"); |
649 | printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>"); |
360 | printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1); |
650 | printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1); |
361 | printf ("\n"); |
651 | printf ("\n"); |
362 | |
652 | |
363 | printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", |
653 | printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", |
364 | _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port")); |
654 | _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port")); |
365 | |
655 | |
… | |
… | |
367 | (*i)->print (); |
657 | (*i)->print (); |
368 | |
658 | |
369 | printf ("\n"); |
659 | printf ("\n"); |
370 | } |
660 | } |
371 | |
661 | |
372 | void |
662 | configuration::configuration () |
373 | conf_node::print () |
|
|
374 | { |
663 | { |
375 | printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n", |
664 | asprintf (&confbase, "%s/gvpe", CONFDIR); |
376 | id, |
|
|
377 | id >> 8, id & 0xff, |
|
|
378 | compress ? 'Y' : 'N', |
|
|
379 | connectmode == C_ONDEMAND ? "ondemand" : |
|
|
380 | connectmode == C_NEVER ? "never" : |
|
|
381 | connectmode == C_ALWAYS ? "always" : "", |
|
|
382 | nodename, |
|
|
383 | hostname ? hostname : "", |
|
|
384 | hostname ? ":" : "", |
|
|
385 | hostname ? port : 0 |
|
|
386 | ); |
|
|
387 | } |
|
|
388 | |
665 | |
|
|
666 | init (); |
|
|
667 | } |
|
|
668 | |
|
|
669 | configuration::~configuration () |
|
|
670 | { |
|
|
671 | cleanup (); |
|
|
672 | } |
|
|
673 | |
|
|
674 | |