1 | /* |
1 | /* |
2 | conf.c -- configuration code |
2 | conf.c -- configuration code |
3 | Copyright (C) 2003-2004 Marc Lehmann <pcg@goof.com> |
3 | Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de> |
4 | |
4 | |
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5 | This file is part of GVPE. |
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6 | |
5 | This program is free software; you can redistribute it and/or modify |
7 | GVPE is free software; you can redistribute it and/or modify it |
6 | it under the terms of the GNU General Public License as published by |
8 | under the terms of the GNU General Public License as published by the |
7 | the Free Software Foundation; either version 2 of the License, or |
9 | Free Software Foundation; either version 3 of the License, or (at your |
8 | (at your option) any later version. |
10 | option) any later version. |
9 | |
11 | |
10 | This program is distributed in the hope that it will be useful, |
12 | This program is distributed in the hope that it will be useful, but |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
13 | GNU General Public License for more details. |
15 | Public License for more details. |
14 | |
16 | |
15 | You should have received a copy of the GNU General Public License |
17 | You should have received a copy of the GNU General Public License along |
16 | along with this program; if not, write to the Free Software |
18 | with this program; if not, see <http://www.gnu.org/licenses/>. |
17 | Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | |
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20 | Additional permission under GNU GPL version 3 section 7 |
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21 | |
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22 | If you modify this Program, or any covered work, by linking or |
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23 | combining it with the OpenSSL project's OpenSSL library (or a modified |
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24 | version of that library), containing parts covered by the terms of the |
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25 | OpenSSL or SSLeay licenses, the licensors of this Program grant you |
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26 | additional permission to convey the resulting work. Corresponding |
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27 | Source for a non-source form of such a combination shall include the |
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28 | source code for the parts of OpenSSL used as well as that of the |
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29 | covered work. |
18 | */ |
30 | */ |
19 | |
31 | |
20 | #include "config.h" |
32 | #include "config.h" |
21 | |
33 | |
22 | #include <cstdio> |
34 | #include <cstdio> |
… | |
… | |
35 | #include <openssl/pem.h> |
47 | #include <openssl/pem.h> |
36 | #include <openssl/rsa.h> |
48 | #include <openssl/rsa.h> |
37 | #include <openssl/rand.h> |
49 | #include <openssl/rand.h> |
38 | #include <openssl/bn.h> |
50 | #include <openssl/bn.h> |
39 | |
51 | |
40 | #include "gettext.h" |
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41 | |
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42 | #include "conf.h" |
52 | #include "conf.h" |
43 | #include "slog.h" |
53 | #include "slog.h" |
44 | #include "util.h" |
54 | #include "util.h" |
45 | |
55 | |
46 | char *confbase; |
56 | char *confbase; |
47 | char *thisnode; |
57 | char *thisnode; |
48 | char *identname; |
58 | char *identname; |
49 | char *pidfilename; |
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50 | |
59 | |
51 | struct configuration conf; |
60 | struct configuration conf; |
52 | |
61 | |
53 | u8 best_protocol (u8 protset) |
62 | u8 best_protocol (u8 protset) |
54 | { |
63 | { |
55 | if (protset & PROT_IPv4 ) return PROT_IPv4; |
64 | if (protset & PROT_IPv4 ) return PROT_IPv4; |
56 | if (protset & PROT_ICMPv4) return PROT_ICMPv4; |
65 | if (protset & PROT_ICMPv4) return PROT_ICMPv4; |
57 | if (protset & PROT_UDPv4 ) return PROT_UDPv4; |
66 | if (protset & PROT_UDPv4 ) return PROT_UDPv4; |
58 | if (protset & PROT_TCPv4 ) return PROT_TCPv4; |
67 | if (protset & PROT_TCPv4 ) return PROT_TCPv4; |
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68 | if (protset & PROT_DNSv4 ) return PROT_DNSv4; |
59 | |
69 | |
60 | return 0; |
70 | return 0; |
61 | } |
71 | } |
62 | |
72 | |
63 | const char *strprotocol (u8 protocol) |
73 | const char *strprotocol (u8 protocol) |
64 | { |
74 | { |
65 | if (protocol & PROT_IPv4 ) return "rawip"; |
75 | if (protocol & PROT_IPv4 ) return "rawip"; |
66 | if (protocol & PROT_ICMPv4) return "icmp"; |
76 | if (protocol & PROT_ICMPv4) return "icmp"; |
67 | if (protocol & PROT_UDPv4 ) return "udp"; |
77 | if (protocol & PROT_UDPv4 ) return "udp"; |
68 | if (protocol & PROT_TCPv4 ) return "tcp"; |
78 | if (protocol & PROT_TCPv4 ) return "tcp"; |
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79 | if (protocol & PROT_DNSv4 ) return "dns"; |
69 | |
80 | |
70 | return "<unknown>"; |
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; |
71 | } |
106 | } |
72 | |
107 | |
73 | void |
108 | void |
74 | conf_node::print () |
109 | conf_node::print () |
75 | { |
110 | { |
76 | printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n", |
111 | printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n", |
77 | id, |
112 | id, |
78 | id >> 8, id & 0xff, |
113 | id >> 8, id & 0xff, |
79 | compress ? 'Y' : 'N', |
114 | compress ? 'Y' : 'N', |
80 | connectmode == C_ONDEMAND ? "ondemand" : |
115 | connectmode == C_ONDEMAND ? "ondemand" |
81 | connectmode == C_NEVER ? "never" : |
116 | : connectmode == C_NEVER ? "never" |
82 | connectmode == C_ALWAYS ? "always" : "", |
117 | : connectmode == C_ALWAYS ? "always" |
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118 | : connectmode == C_DISABLED ? "disabled" |
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119 | : "", |
83 | nodename, |
120 | nodename, |
84 | hostname ? hostname : "", |
121 | hostname ? hostname : "", |
85 | hostname ? ":" : "", |
122 | hostname ? ":" : "", |
86 | hostname ? udp_port : 0 |
123 | hostname ? udp_port : 0 |
87 | ); |
124 | ); |
88 | } |
125 | } |
89 | |
126 | |
90 | conf_node::~conf_node () |
127 | conf_node::~conf_node () |
91 | { |
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 |
92 | if (rsa_key) |
132 | if (rsa_key) |
93 | RSA_free (rsa_key); |
133 | RSA_free (rsa_key); |
94 | |
134 | |
95 | free (nodename); |
135 | free (nodename); |
96 | free (hostname); |
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 |
97 | } |
143 | } |
98 | |
144 | |
99 | void configuration::init () |
145 | void configuration::init () |
100 | { |
146 | { |
101 | memset (this, 0, sizeof (*this)); |
147 | memset (this, 0, sizeof (*this)); |
102 | |
148 | |
103 | mtu = DEFAULT_MTU; |
149 | mtu = DEFAULT_MTU; |
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150 | nfmark = 0; |
104 | rekey = DEFAULT_REKEY; |
151 | rekey = DEFAULT_REKEY; |
105 | keepalive = DEFAULT_KEEPALIVE; |
152 | keepalive = DEFAULT_KEEPALIVE; |
106 | llevel = L_INFO; |
153 | llevel = L_INFO; |
107 | ip_proto = IPPROTO_GRE; |
154 | ip_proto = IPPROTO_GRE; |
108 | #if ENABLE_ICMP |
155 | #if ENABLE_ICMP |
109 | icmp_type = ICMP_ECHOREPLY; |
156 | icmp_type = ICMP_ECHOREPLY; |
110 | #endif |
157 | #endif |
111 | |
158 | |
112 | default_node.udp_port = DEFAULT_UDPPORT; |
159 | default_node.udp_port = DEFAULT_UDPPORT; |
113 | default_node.tcp_port = DEFAULT_UDPPORT; |
160 | default_node.tcp_port = DEFAULT_UDPPORT; // ehrm |
114 | default_node.connectmode = conf_node::C_ALWAYS; |
161 | default_node.connectmode = conf_node::C_ALWAYS; |
115 | default_node.compress = true; |
162 | default_node.compress = true; |
116 | default_node.protocols = PROT_UDPv4; |
163 | default_node.protocols = 0; |
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164 | default_node.max_retry = DEFAULT_MAX_RETRY; |
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165 | default_node.max_ttl = DEFAULT_MAX_TTL; |
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166 | default_node.max_queue = DEFAULT_MAX_QUEUE; |
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167 | default_node.if_up_data = strdup (""); |
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168 | |
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169 | #if ENABLE_DNS |
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170 | default_node.dns_port = 0; // default is 0 == client |
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171 | |
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172 | dns_forw_host = strdup ("127.0.0.1"); |
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173 | dns_forw_port = 53; |
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174 | dns_timeout_factor = DEFAULT_DNS_TIMEOUT_FACTOR; |
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175 | dns_send_interval = DEFAULT_DNS_SEND_INTERVAL; |
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176 | dns_overlap_factor = DEFAULT_DNS_OVERLAP_FACTOR; |
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177 | dns_max_outstanding = DEFAULT_DNS_MAX_OUTSTANDING; |
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178 | #endif |
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179 | |
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180 | conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid"); |
117 | } |
181 | } |
118 | |
182 | |
119 | void configuration::cleanup() |
183 | void configuration::cleanup() |
120 | { |
184 | { |
121 | if (rsa_key) |
185 | if (rsa_key) |
122 | RSA_free (rsa_key); |
186 | RSA_free (rsa_key); |
123 | |
187 | |
124 | rsa_key = 0; |
188 | rsa_key = 0; |
125 | |
189 | |
126 | free (ifname); ifname = 0; |
190 | free (pidfilename); pidfilename = 0; |
127 | #if ENABLE_HTTP_PROXY |
191 | free (ifname); ifname = 0; |
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192 | #if ENABLE_HTTP_PROXY |
128 | free (proxy_host); proxy_host = 0; |
193 | free (proxy_host); proxy_host = 0; |
129 | free (proxy_auth); proxy_auth = 0; |
194 | free (proxy_auth); proxy_auth = 0; |
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195 | #endif |
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196 | #if ENABLE_DNS |
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197 | free (dns_forw_host); dns_forw_host = 0; |
130 | #endif |
198 | #endif |
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199 | free (script_if_up); script_if_up = 0; |
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200 | free (script_node_up); script_node_up = 0; |
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201 | free (script_node_change); script_node_change = 0; |
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202 | free (script_node_down); script_node_down = 0; |
131 | } |
203 | } |
132 | |
204 | |
133 | void |
205 | void |
134 | configuration::clear_config () |
206 | configuration::clear () |
135 | { |
207 | { |
136 | for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i) |
208 | for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i) |
137 | delete *i; |
209 | delete *i; |
138 | |
210 | |
139 | nodes.clear (); |
211 | nodes.clear (); |
140 | |
212 | |
141 | cleanup (); |
213 | cleanup (); |
142 | init (); |
214 | init (); |
143 | } |
215 | } |
144 | |
216 | |
145 | #define parse_bool(target,name,trueval,falseval) \ |
217 | #define parse_bool(target,name,trueval,falseval) do { \ |
146 | if (!strcmp (val, "yes")) target = trueval; \ |
218 | if (!strcmp (val, "yes")) target = trueval; \ |
147 | else if (!strcmp (val, "no")) target = falseval; \ |
219 | else if (!strcmp (val, "no")) target = falseval; \ |
148 | else if (!strcmp (val, "true")) target = trueval; \ |
220 | else if (!strcmp (val, "true")) target = trueval; \ |
149 | else if (!strcmp (val, "false")) target = falseval; \ |
221 | else if (!strcmp (val, "false")) target = falseval; \ |
150 | else if (!strcmp (val, "on")) target = trueval; \ |
222 | else if (!strcmp (val, "on")) target = trueval; \ |
151 | else if (!strcmp (val, "off")) target = falseval; \ |
223 | else if (!strcmp (val, "off")) target = falseval; \ |
152 | else \ |
224 | else \ |
153 | slog (L_WARN, \ |
225 | return _("illegal boolean value, only 'yes|true|on' or 'no|false|off' allowed. (ignored)"); \ |
154 | _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \ |
226 | } while (0) |
155 | name, var, fname, lineno); |
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156 | |
227 | |
157 | void configuration::read_config (bool need_keys) |
228 | const char * |
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229 | configuration_parser::parse_line (char *line) |
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230 | { |
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231 | { |
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232 | char *end = line + strlen (line); |
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233 | |
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234 | while (*end < ' ' && end >= line) |
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235 | end--; |
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236 | |
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237 | *++end = 0; |
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238 | } |
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239 | |
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240 | char *tok = line; |
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241 | const char *var = strtok (tok, "\t ="); |
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242 | tok = 0; |
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243 | |
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244 | if (!var || !var[0]) |
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245 | return 0; /* no tokens on this line */ |
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246 | |
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247 | if (var[0] == '#') |
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248 | return 0; /* comment: ignore */ |
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249 | |
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250 | char *val = strtok (NULL, "\t\n\r ="); |
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251 | |
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252 | if (!val || val[0] == '#') |
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253 | return _("no value given for variable. (ignored)"); |
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254 | |
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255 | if (!strcmp (var, "on")) |
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256 | { |
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257 | if (!::thisnode |
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258 | || (val[0] == '!' && strcmp (val + 1, ::thisnode)) |
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259 | || !strcmp (val, ::thisnode)) |
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260 | return parse_line (strtok (NULL, "\n\r")); |
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261 | else |
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262 | return 0; |
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263 | } |
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264 | |
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265 | // truly global |
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266 | if (!strcmp (var, "loglevel")) |
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267 | { |
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268 | loglevel l = string_to_loglevel (val); |
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269 | |
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270 | if (l == L_NONE) |
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271 | return _("unknown loglevel. (skipping)"); |
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272 | } |
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273 | else if (!strcmp (var, "ip-proto")) |
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274 | conf.ip_proto = atoi (val); |
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275 | else if (!strcmp (var, "icmp-type")) |
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276 | { |
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277 | #if ENABLE_ICMP |
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278 | conf.icmp_type = atoi (val); |
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279 | #endif |
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280 | } |
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281 | |
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282 | // per config |
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283 | else if (!strcmp (var, "node")) |
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284 | { |
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285 | parse_argv (); |
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286 | |
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287 | conf.default_node.id++; |
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288 | node = new conf_node (conf.default_node); |
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289 | conf.nodes.push_back (node); |
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290 | node->nodename = strdup (val); |
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291 | |
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292 | { |
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293 | char *fname; |
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294 | FILE *f; |
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295 | |
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296 | asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename); |
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297 | |
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298 | f = fopen (fname, "r"); |
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299 | if (f) |
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300 | { |
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301 | node->rsa_key = RSA_new (); |
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302 | |
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303 | if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL)) |
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304 | { |
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305 | ERR_load_RSA_strings (); ERR_load_PEM_strings (); |
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306 | slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); |
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307 | exit (EXIT_FAILURE); |
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308 | } |
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309 | |
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310 | require (RSA_blinding_on (node->rsa_key, 0)); |
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311 | |
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312 | fclose (f); |
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313 | } |
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314 | else |
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315 | { |
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316 | slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno)); |
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317 | |
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318 | if (need_keys) |
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319 | exit (EXIT_FAILURE); |
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320 | } |
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321 | |
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322 | free (fname); |
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323 | } |
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324 | |
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325 | if (::thisnode && !strcmp (node->nodename, ::thisnode)) |
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326 | conf.thisnode = node; |
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327 | } |
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328 | else if (!strcmp (var, "private-key")) |
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329 | free (conf.prikeyfile), conf.prikeyfile = strdup (val); |
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330 | else if (!strcmp (var, "ifpersist")) |
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331 | parse_bool (conf.ifpersist, "ifpersist", true, false); |
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332 | else if (!strcmp (var, "ifname")) |
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333 | free (conf.ifname), conf.ifname = strdup (val); |
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334 | else if (!strcmp (var, "rekey")) |
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335 | conf.rekey = atoi (val); |
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336 | else if (!strcmp (var, "keepalive")) |
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337 | conf.keepalive = atoi (val); |
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338 | else if (!strcmp (var, "mtu")) |
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339 | conf.mtu = atoi (val); |
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340 | else if (!strcmp (var, "nfmark")) |
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341 | conf.nfmark = atoi (val); |
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342 | else if (!strcmp (var, "if-up")) |
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343 | free (conf.script_if_up), conf.script_if_up = strdup (val); |
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344 | else if (!strcmp (var, "node-up")) |
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345 | free (conf.script_node_up), conf.script_node_up = strdup (val); |
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346 | else if (!strcmp (var, "node-change")) |
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347 | free (conf.script_node_change), conf.script_node_change = strdup (val); |
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348 | else if (!strcmp (var, "node-down")) |
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349 | free (conf.script_node_down), conf.script_node_down = strdup (val); |
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350 | else if (!strcmp (var, "pid-file")) |
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351 | free (conf.pidfilename), conf.pidfilename = strdup (val); |
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352 | else if (!strcmp (var, "dns-forw-host")) |
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353 | { |
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354 | #if ENABLE_DNS |
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355 | free (conf.dns_forw_host), conf.dns_forw_host = strdup (val); |
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356 | #endif |
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357 | } |
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358 | else if (!strcmp (var, "dns-forw-port")) |
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359 | { |
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360 | #if ENABLE_DNS |
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361 | conf.dns_forw_port = atoi (val); |
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362 | #endif |
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363 | } |
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364 | else if (!strcmp (var, "dns-timeout-factor")) |
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365 | { |
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366 | #if ENABLE_DNS |
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367 | conf.dns_timeout_factor = atof (val); |
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368 | #endif |
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369 | } |
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370 | else if (!strcmp (var, "dns-send-interval")) |
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371 | { |
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372 | #if ENABLE_DNS |
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373 | conf.dns_send_interval = atoi (val); |
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374 | #endif |
|
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375 | } |
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376 | else if (!strcmp (var, "dns-overlap-factor")) |
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377 | { |
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378 | #if ENABLE_DNS |
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379 | conf.dns_overlap_factor = atof (val); |
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380 | #endif |
|
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381 | } |
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382 | else if (!strcmp (var, "dns-max-outstanding")) |
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383 | { |
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384 | #if ENABLE_DNS |
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385 | conf.dns_max_outstanding = atoi (val); |
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386 | #endif |
|
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387 | } |
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388 | else if (!strcmp (var, "http-proxy-host")) |
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389 | { |
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390 | #if ENABLE_HTTP_PROXY |
|
|
391 | free (conf.proxy_host), conf.proxy_host = strdup (val); |
|
|
392 | #endif |
|
|
393 | } |
|
|
394 | else if (!strcmp (var, "http-proxy-port")) |
|
|
395 | { |
|
|
396 | #if ENABLE_HTTP_PROXY |
|
|
397 | conf.proxy_port = atoi (val); |
|
|
398 | #endif |
|
|
399 | } |
|
|
400 | else if (!strcmp (var, "http-proxy-auth")) |
|
|
401 | { |
|
|
402 | #if ENABLE_HTTP_PROXY |
|
|
403 | conf.proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val)); |
|
|
404 | #endif |
|
|
405 | } |
|
|
406 | |
|
|
407 | /* node-specific, non-defaultable */ |
|
|
408 | else if (node != &conf.default_node && !strcmp (var, "hostname")) |
|
|
409 | free (node->hostname), node->hostname = strdup (val); |
|
|
410 | |
|
|
411 | /* node-specific, defaultable */ |
|
|
412 | else if (!strcmp (var, "udp-port")) |
|
|
413 | node->udp_port = atoi (val); |
|
|
414 | else if (!strcmp (var, "tcp-port")) |
|
|
415 | node->tcp_port = atoi (val); |
|
|
416 | else if (!strcmp (var, "dns-hostname")) |
|
|
417 | { |
|
|
418 | #if ENABLE_DNS |
|
|
419 | free (node->dns_hostname), node->dns_hostname = strdup (val); |
|
|
420 | #endif |
|
|
421 | } |
|
|
422 | else if (!strcmp (var, "dns-port")) |
|
|
423 | { |
|
|
424 | #if ENABLE_DNS |
|
|
425 | node->dns_port = atoi (val); |
|
|
426 | #endif |
|
|
427 | } |
|
|
428 | else if (!strcmp (var, "dns-domain")) |
|
|
429 | { |
|
|
430 | #if ENABLE_DNS |
|
|
431 | free (node->domain), node->domain = strdup (val); |
|
|
432 | #endif |
|
|
433 | } |
|
|
434 | else if (!strcmp (var, "if-up-data")) |
|
|
435 | free (node->if_up_data), node->if_up_data = strdup (val); |
|
|
436 | else if (!strcmp (var, "router-priority")) |
|
|
437 | node->routerprio = atoi (val); |
|
|
438 | else if (!strcmp (var, "max-retry")) |
|
|
439 | node->max_retry = atoi (val); |
|
|
440 | else if (!strcmp (var, "connect")) |
|
|
441 | { |
|
|
442 | if (!strcmp (val, "ondemand")) |
|
|
443 | node->connectmode = conf_node::C_ONDEMAND; |
|
|
444 | else if (!strcmp (val, "never")) |
|
|
445 | node->connectmode = conf_node::C_NEVER; |
|
|
446 | else if (!strcmp (val, "always")) |
|
|
447 | node->connectmode = conf_node::C_ALWAYS; |
|
|
448 | else if (!strcmp (val, "disabled")) |
|
|
449 | node->connectmode = conf_node::C_DISABLED; |
|
|
450 | else |
|
|
451 | return _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled'. (ignored)"); |
|
|
452 | } |
|
|
453 | else if (!strcmp (var, "inherit-tos")) |
|
|
454 | parse_bool (node->inherit_tos, "inherit-tos", true, false); |
|
|
455 | else if (!strcmp (var, "compress")) |
|
|
456 | parse_bool (node->compress, "compress", true, false); |
|
|
457 | // all these bool options really really cost a lot of executable size! |
|
|
458 | else if (!strcmp (var, "enable-tcp")) |
|
|
459 | { |
|
|
460 | #if ENABLE_TCP |
|
|
461 | u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v; |
|
|
462 | #endif |
|
|
463 | } |
|
|
464 | else if (!strcmp (var, "enable-icmp")) |
|
|
465 | { |
|
|
466 | #if ENABLE_ICMP |
|
|
467 | u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v; |
|
|
468 | #endif |
|
|
469 | } |
|
|
470 | else if (!strcmp (var, "enable-dns")) |
|
|
471 | { |
|
|
472 | #if ENABLE_DNS |
|
|
473 | u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v; |
|
|
474 | #endif |
|
|
475 | } |
|
|
476 | else if (!strcmp (var, "enable-udp")) |
|
|
477 | { |
|
|
478 | u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v; |
|
|
479 | } |
|
|
480 | else if (!strcmp (var, "enable-rawip")) |
|
|
481 | { |
|
|
482 | u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v; |
|
|
483 | } |
|
|
484 | else if (!strcmp (var, "allow-direct")) |
|
|
485 | node->allow_direct.push_back (strdup (val)); |
|
|
486 | else if (!strcmp (var, "deny-direct")) |
|
|
487 | node->deny_direct.push_back (strdup (val)); |
|
|
488 | else if (!strcmp (var, "max-ttl")) |
|
|
489 | node->max_ttl = atof (val); |
|
|
490 | else if (!strcmp (var, "max-queue")) |
|
|
491 | node->max_queue = atoi (val); |
|
|
492 | |
|
|
493 | // unknown or misplaced |
|
|
494 | else |
|
|
495 | return _("unknown configuration directive. (ignored)"); |
|
|
496 | |
|
|
497 | return 0; |
|
|
498 | } |
|
|
499 | |
|
|
500 | void conf_node::finalise () |
|
|
501 | { |
|
|
502 | if (max_queue < 1) |
|
|
503 | { |
|
|
504 | slog (L_WARN, _("%s: max-queue value invalid, setting it to 1."), nodename); |
|
|
505 | max_queue = 1; |
|
|
506 | } |
|
|
507 | |
|
|
508 | if (routerprio > 1 && (connectmode != C_ALWAYS && connectmode != C_DISABLED)) |
|
|
509 | { |
|
|
510 | //slog (L_WARN, _("%s: has non-zero router-priority but either 'never' or 'ondemand' as connectmode, setting it to 'always'."), nodename); |
|
|
511 | connectmode = C_ALWAYS; |
|
|
512 | } |
|
|
513 | } |
|
|
514 | |
|
|
515 | void configuration_parser::parse_argv () |
|
|
516 | { |
|
|
517 | for (int i = 0; i < argc; ++i) |
|
|
518 | { |
|
|
519 | char *v = argv [i]; |
|
|
520 | |
|
|
521 | if (!*v) |
|
|
522 | continue; |
|
|
523 | |
|
|
524 | char *enode = v; |
|
|
525 | |
|
|
526 | while (*enode != '.' && *enode > ' ' && *enode != '=' && *enode) |
|
|
527 | enode++; |
|
|
528 | |
|
|
529 | if (*enode != '.') |
|
|
530 | enode = 0; |
|
|
531 | |
|
|
532 | char *wnode = node == &conf.default_node |
|
|
533 | ? 0 |
|
|
534 | : node->nodename; |
|
|
535 | |
|
|
536 | if ((!wnode && !enode) |
|
|
537 | || (wnode && enode && !strncmp (wnode, v, enode - v))) |
|
|
538 | { |
|
|
539 | const char *warn = parse_line (enode ? enode + 1 : v); |
|
|
540 | |
|
|
541 | if (warn) |
|
|
542 | slog (L_WARN, _("%s, while parsing command line option '%s'."), warn, v); |
|
|
543 | |
|
|
544 | *v = 0; |
|
|
545 | } |
|
|
546 | } |
|
|
547 | } |
|
|
548 | |
|
|
549 | configuration_parser::configuration_parser (configuration &conf, |
|
|
550 | bool need_keys, |
|
|
551 | int argc, |
|
|
552 | char **argv) |
|
|
553 | : conf (conf),need_keys (need_keys), argc (argc), argv (argv) |
158 | { |
554 | { |
159 | char *fname; |
555 | char *fname; |
160 | FILE *f; |
556 | FILE *f; |
161 | |
557 | |
162 | clear_config (); |
558 | conf.clear (); |
163 | |
559 | |
164 | asprintf (&fname, "%s/vped.conf", confbase); |
560 | asprintf (&fname, "%s/gvpe.conf", confbase); |
165 | f = fopen (fname, "r"); |
561 | f = fopen (fname, "r"); |
166 | |
562 | |
167 | if (f) |
563 | if (f) |
168 | { |
564 | { |
169 | char line[16384]; |
565 | char line[16384]; |
170 | int lineno = 0; |
566 | int lineno = 0; |
171 | char *var, *val; |
567 | node = &conf.default_node; |
172 | conf_node *node = &default_node; |
|
|
173 | |
568 | |
174 | while (fgets (line, sizeof (line), f)) |
569 | while (fgets (line, sizeof (line), f)) |
175 | { |
570 | { |
176 | lineno++; |
571 | lineno++; |
177 | |
572 | |
178 | { |
573 | const char *warn = parse_line (line); |
179 | char *end = line + strlen (line); |
|
|
180 | |
574 | |
181 | while (*end < ' ' && end >= line) |
575 | if (warn) |
182 | end--; |
576 | slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno); |
183 | |
|
|
184 | *++end = 0; |
|
|
185 | } |
|
|
186 | |
|
|
187 | char *tok = line; |
|
|
188 | |
|
|
189 | retry: |
|
|
190 | var = strtok (tok, "\t ="); |
|
|
191 | tok = 0; |
|
|
192 | |
|
|
193 | if (!var || !var[0]) |
|
|
194 | continue; /* no tokens on this line */ |
|
|
195 | |
|
|
196 | if (var[0] == '#') |
|
|
197 | continue; /* comment: ignore */ |
|
|
198 | |
|
|
199 | val = strtok (NULL, "\t\n\r ="); |
|
|
200 | |
|
|
201 | if (!val || val[0] == '#') |
|
|
202 | { |
|
|
203 | slog (L_WARN, |
|
|
204 | _("no value for variable `%s', at '%s' line %d"), |
|
|
205 | var, fname, lineno); |
|
|
206 | break; |
|
|
207 | } |
|
|
208 | |
|
|
209 | if (!strcmp (var, "on")) |
|
|
210 | { |
|
|
211 | if (!::thisnode |
|
|
212 | || (val[0] == '!' && strcmp (val + 1, ::thisnode)) |
|
|
213 | || !strcmp (val, ::thisnode)) |
|
|
214 | goto retry; |
|
|
215 | |
|
|
216 | continue; |
|
|
217 | } |
|
|
218 | |
|
|
219 | // truly global |
|
|
220 | if (!strcmp (var, "loglevel")) |
|
|
221 | { |
|
|
222 | loglevel l = string_to_loglevel (val); |
|
|
223 | |
|
|
224 | if (l != L_NONE) |
|
|
225 | llevel = l; |
|
|
226 | else |
|
|
227 | slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line); |
|
|
228 | } |
|
|
229 | else if (!strcmp (var, "ip-proto")) |
|
|
230 | ip_proto = atoi (val); |
|
|
231 | else if (!strcmp (var, "icmp-type")) |
|
|
232 | { |
|
|
233 | #if ENABLE_ICMP |
|
|
234 | icmp_type = atoi (val); |
|
|
235 | #endif |
|
|
236 | } |
|
|
237 | |
|
|
238 | // per config |
|
|
239 | else if (!strcmp (var, "node")) |
|
|
240 | { |
|
|
241 | default_node.id++; |
|
|
242 | |
|
|
243 | node = new conf_node (default_node); |
|
|
244 | |
|
|
245 | nodes.push_back (node); |
|
|
246 | |
|
|
247 | node->nodename = strdup (val); |
|
|
248 | |
|
|
249 | { |
|
|
250 | char *fname; |
|
|
251 | FILE *f; |
|
|
252 | |
|
|
253 | asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename); |
|
|
254 | |
|
|
255 | f = fopen (fname, "r"); |
|
|
256 | if (f) |
|
|
257 | { |
|
|
258 | node->rsa_key = RSA_new (); |
|
|
259 | |
|
|
260 | if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL)) |
|
|
261 | { |
|
|
262 | ERR_load_RSA_strings (); ERR_load_PEM_strings (); |
|
|
263 | slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); |
|
|
264 | exit (EXIT_FAILURE); |
|
|
265 | } |
|
|
266 | |
|
|
267 | require (RSA_blinding_on (node->rsa_key, 0)); |
|
|
268 | |
|
|
269 | fclose (f); |
|
|
270 | } |
|
|
271 | else |
|
|
272 | { |
|
|
273 | slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno)); |
|
|
274 | |
|
|
275 | if (need_keys) |
|
|
276 | exit (EXIT_FAILURE); |
|
|
277 | } |
|
|
278 | |
|
|
279 | free (fname); |
|
|
280 | } |
|
|
281 | |
|
|
282 | if (::thisnode && !strcmp (node->nodename, ::thisnode)) |
|
|
283 | thisnode = node; |
|
|
284 | } |
|
|
285 | else if (!strcmp (var, "private-key")) |
|
|
286 | prikeyfile = strdup (val); |
|
|
287 | else if (!strcmp (var, "ifpersist")) |
|
|
288 | { |
|
|
289 | parse_bool (ifpersist, "ifpersist", true, false); |
|
|
290 | } |
|
|
291 | else if (!strcmp (var, "ifname")) |
|
|
292 | ifname = strdup (val); |
|
|
293 | else if (!strcmp (var, "rekey")) |
|
|
294 | rekey = atoi (val); |
|
|
295 | else if (!strcmp (var, "keepalive")) |
|
|
296 | keepalive = atoi (val); |
|
|
297 | else if (!strcmp (var, "mtu")) |
|
|
298 | mtu = atoi (val); |
|
|
299 | else if (!strcmp (var, "if-up")) |
|
|
300 | script_if_up = strdup (val); |
|
|
301 | else if (!strcmp (var, "node-up")) |
|
|
302 | script_node_up = strdup (val); |
|
|
303 | else if (!strcmp (var, "node-down")) |
|
|
304 | script_node_down = strdup (val); |
|
|
305 | else if (!strcmp (var, "http-proxy-host")) |
|
|
306 | { |
|
|
307 | #if ENABLE_HTTP_PROXY |
|
|
308 | proxy_host = strdup (val); |
|
|
309 | #endif |
|
|
310 | } |
|
|
311 | else if (!strcmp (var, "http-proxy-port")) |
|
|
312 | { |
|
|
313 | #if ENABLE_HTTP_PROXY |
|
|
314 | proxy_port = atoi (val); |
|
|
315 | #endif |
|
|
316 | } |
|
|
317 | else if (!strcmp (var, "http-proxy-auth")) |
|
|
318 | { |
|
|
319 | #if ENABLE_HTTP_PROXY |
|
|
320 | proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val)); |
|
|
321 | #endif |
|
|
322 | } |
|
|
323 | |
|
|
324 | /* node-specific, non-defaultable */ |
|
|
325 | else if (node != &default_node && !strcmp (var, "hostname")) |
|
|
326 | { |
|
|
327 | free (node->hostname); |
|
|
328 | node->hostname = strdup (val); |
|
|
329 | } |
|
|
330 | |
|
|
331 | /* node-specific, defaultable */ |
|
|
332 | else if (!strcmp (var, "udp-port")) |
|
|
333 | node->udp_port = atoi (val); |
|
|
334 | else if (!strcmp (var, "tcp-port")) |
|
|
335 | node->tcp_port = atoi (val); |
|
|
336 | else if (!strcmp (var, "router-priority")) |
|
|
337 | node->routerprio = atoi (val); |
|
|
338 | else if (!strcmp (var, "connect")) |
|
|
339 | { |
|
|
340 | if (!strcmp (val, "ondemand")) |
|
|
341 | node->connectmode = conf_node::C_ONDEMAND; |
|
|
342 | else if (!strcmp (val, "never")) |
|
|
343 | node->connectmode = conf_node::C_NEVER; |
|
|
344 | else if (!strcmp (val, "always")) |
|
|
345 | node->connectmode = conf_node::C_ALWAYS; |
|
|
346 | else if (!strcmp (val, "disabled")) |
|
|
347 | node->connectmode = conf_node::C_DISABLED; |
|
|
348 | else |
|
|
349 | slog (L_WARN, |
|
|
350 | _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"), |
|
|
351 | var, fname, lineno); |
|
|
352 | } |
|
|
353 | else if (!strcmp (var, "inherit-tos")) |
|
|
354 | { |
|
|
355 | parse_bool (node->inherit_tos, "inherit-tos", true, false); |
|
|
356 | } |
|
|
357 | else if (!strcmp (var, "compress")) |
|
|
358 | { |
|
|
359 | parse_bool (node->compress, "compress", true, false); |
|
|
360 | } |
|
|
361 | // all these bool options really really cost a lot of executable size! |
|
|
362 | else if (!strcmp (var, "enable-tcp")) |
|
|
363 | { |
|
|
364 | #if ENABLE_TCP |
|
|
365 | u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v; |
|
|
366 | #endif |
|
|
367 | } |
|
|
368 | else if (!strcmp (var, "enable-icmp")) |
|
|
369 | { |
|
|
370 | #if ENABLE_ICMP |
|
|
371 | u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v; |
|
|
372 | #endif |
|
|
373 | } |
|
|
374 | else if (!strcmp (var, "enable-udp")) |
|
|
375 | { |
|
|
376 | u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v; |
|
|
377 | } |
|
|
378 | else if (!strcmp (var, "enable-rawip")) |
|
|
379 | { |
|
|
380 | u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v; |
|
|
381 | } |
|
|
382 | |
|
|
383 | // unknown or misplaced |
|
|
384 | else |
|
|
385 | slog (L_WARN, |
|
|
386 | _("unknown or misplaced variable `%s', at '%s' line %d"), |
|
|
387 | var, fname, lineno); |
|
|
388 | } |
577 | } |
389 | |
578 | |
390 | fclose (f); |
579 | fclose (f); |
|
|
580 | |
|
|
581 | parse_argv (); |
391 | } |
582 | } |
392 | else |
583 | else |
393 | { |
584 | { |
394 | slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); |
585 | slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); |
395 | exit (EXIT_FAILURE); |
586 | exit (EXIT_FAILURE); |
396 | } |
587 | } |
397 | |
588 | |
398 | free (fname); |
589 | free (fname); |
399 | |
590 | |
400 | fname = config_filename (prikeyfile, "hostkey"); |
591 | fname = conf.config_filename (conf.prikeyfile, "hostkey"); |
401 | |
592 | |
402 | f = fopen (fname, "r"); |
593 | f = fopen (fname, "r"); |
403 | if (f) |
594 | if (f) |
404 | { |
595 | { |
405 | rsa_key = RSA_new (); |
596 | conf.rsa_key = RSA_new (); |
406 | |
597 | |
407 | if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) |
598 | if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL)) |
408 | { |
599 | { |
409 | ERR_load_RSA_strings (); ERR_load_PEM_strings (); |
600 | ERR_load_RSA_strings (); ERR_load_PEM_strings (); |
410 | slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); |
601 | slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); |
411 | exit (EXIT_FAILURE); |
602 | exit (EXIT_FAILURE); |
412 | } |
603 | } |
413 | |
604 | |
414 | require (RSA_blinding_on (rsa_key, 0)); |
605 | require (RSA_blinding_on (conf.rsa_key, 0)); |
415 | |
606 | |
416 | fclose (f); |
607 | fclose (f); |
417 | } |
608 | } |
418 | else |
609 | else |
419 | { |
610 | { |
… | |
… | |
422 | if (need_keys) |
613 | if (need_keys) |
423 | exit (EXIT_FAILURE); |
614 | exit (EXIT_FAILURE); |
424 | } |
615 | } |
425 | |
616 | |
426 | if (need_keys && ::thisnode |
617 | if (need_keys && ::thisnode |
427 | && rsa_key && thisnode && thisnode->rsa_key) |
618 | && conf.rsa_key && conf.thisnode && conf.thisnode->rsa_key) |
428 | if (BN_cmp (rsa_key->n, thisnode->rsa_key->n) != 0 |
619 | if (BN_cmp (conf.rsa_key->n, conf.thisnode->rsa_key->n) != 0 |
429 | || BN_cmp (rsa_key->e, thisnode->rsa_key->e) != 0) |
620 | || BN_cmp (conf.rsa_key->e, conf.thisnode->rsa_key->e) != 0) |
430 | { |
621 | { |
431 | slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode); |
622 | slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode); |
432 | exit (EXIT_FAILURE); |
623 | exit (EXIT_FAILURE); |
433 | } |
624 | } |
434 | |
625 | |
435 | free (fname); |
626 | free (fname); |
|
|
627 | |
|
|
628 | for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i) |
|
|
629 | (*i)->finalise (); |
436 | } |
630 | } |
437 | |
631 | |
438 | char *configuration::config_filename (const char *name, const char *dflt) |
632 | char *configuration::config_filename (const char *name, const char *dflt) |
439 | { |
633 | { |
440 | char *fname; |
634 | char *fname; |
… | |
… | |
474 | printf ("\n"); |
668 | printf ("\n"); |
475 | } |
669 | } |
476 | |
670 | |
477 | configuration::configuration () |
671 | configuration::configuration () |
478 | { |
672 | { |
|
|
673 | asprintf (&confbase, "%s/gvpe", CONFDIR); |
|
|
674 | |
479 | init (); |
675 | init (); |
480 | } |
676 | } |
481 | |
677 | |
482 | configuration::~configuration () |
678 | configuration::~configuration () |
483 | { |
679 | { |