1 | /* |
1 | /* |
2 | sockinfo.c -- socket address management |
2 | sockinfo.C -- socket address management |
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3 | Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de> |
3 | |
4 | |
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5 | This file is part of GVPE. |
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6 | |
4 | This program is free software; you can redistribute it and/or modify |
7 | GVPE is free software; you can redistribute it and/or modify it |
5 | it under the terms of the GNU General Public License as published by |
8 | under the terms of the GNU General Public License as published by the |
6 | the Free Software Foundation; either version 2 of the License, or |
9 | Free Software Foundation; either version 3 of the License, or (at your |
7 | (at your option) any later version. |
10 | option) any later version. |
8 | |
11 | |
9 | This program is distributed in the hope that it will be useful, |
12 | This program is distributed in the hope that it will be useful, but |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
12 | GNU General Public License for more details. |
15 | Public License for more details. |
13 | |
16 | |
14 | You should have received a copy of the GNU General Public License |
17 | You should have received a copy of the GNU General Public License along |
15 | along with this program; if not, write to the Free Software |
18 | with this program; if not, see <http://www.gnu.org/licenses/>. |
16 | Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | |
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20 | Additional permission under GNU GPL version 3 section 7 |
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21 | |
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22 | If you modify this Program, or any covered work, by linking or |
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23 | combining it with the OpenSSL project's OpenSSL library (or a modified |
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24 | version of that library), containing parts covered by the terms of the |
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25 | OpenSSL or SSLeay licenses, the licensors of this Program grant you |
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26 | additional permission to convey the resulting work. Corresponding |
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27 | Source for a non-source form of such a combination shall include the |
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28 | source code for the parts of OpenSSL used as well as that of the |
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29 | covered work. |
17 | */ |
30 | */ |
18 | |
31 | |
19 | #include "config.h" |
32 | #include "config.h" |
20 | |
33 | |
21 | #include <arpa/inet.h> |
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22 | #include <netdb.h> |
34 | #include <netdb.h> |
23 | |
35 | |
24 | #include "gettext.h" |
36 | #include "gettext.h" |
25 | |
37 | |
26 | #include "sockinfo.h" |
38 | #include "sockinfo.h" |
27 | #include "slog.h" |
39 | #include "slog.h" |
28 | |
40 | |
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41 | #include <cstring> |
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42 | #include <cstdio> |
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43 | |
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44 | // all ipv4-based protocols |
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45 | #define PROTv4 (PROT_UDPv4 | PROT_TCPv4 | PROT_ICMPv4 | PROT_IPv4 | PROT_DNSv4) |
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46 | |
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47 | void |
29 | void sockinfo::set (const sockaddr_in *sa, u8 prot_) |
48 | sockinfo::set (const sockaddr_in *sa, u8 prot_) |
30 | { |
49 | { |
31 | host = sa->sin_addr.s_addr; |
50 | host = sa->sin_addr.s_addr; |
32 | port = prot_ == PROT_IPv4 ? 0 : sa->sin_port; |
51 | port = prot_ & (PROT_IPv4 | PROT_ICMPv4) ? 0 : sa->sin_port; |
33 | prot = prot_; |
52 | prot = prot_; |
34 | } |
53 | } |
35 | |
54 | |
36 | void |
55 | void |
37 | sockinfo::set (const conf_node *conf) |
56 | sockinfo::set (const char *hostname, u16 port_, u8 prot_) |
38 | { |
57 | { |
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58 | prot = prot_; |
39 | host = 0; |
59 | host = 0; |
40 | port = htons (conf->udp_port); |
60 | port = htons (port_); |
41 | |
61 | |
42 | if (conf->hostname) |
62 | if (prot & PROTv4 |
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63 | && hostname) |
43 | { |
64 | { |
44 | struct hostent *he = gethostbyname (conf->hostname); |
65 | struct hostent *he = gethostbyname (hostname); |
45 | |
66 | |
46 | if (he |
67 | if (he |
47 | && he->h_addrtype == AF_INET && he->h_length == 4 && he->h_addr_list[0]) |
68 | && he->h_addrtype == AF_INET && he->h_length == 4 && he->h_addr_list[0]) |
48 | { |
69 | { |
49 | //sa->sin_family = he->h_addrtype; |
70 | //sa->sin_family = he->h_addrtype; |
50 | memcpy (&host, he->h_addr_list[0], 4); |
71 | memcpy (&host, he->h_addr_list[0], 4); |
51 | |
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52 | prot = PROT_UDPv4 | PROT_IPv4; |
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53 | } |
72 | } |
54 | else |
73 | else |
55 | slog (L_NOTICE, _("unable to resolve host '%s'"), conf->hostname); |
74 | slog (L_NOTICE, _("unable to resolve host '%s'"), hostname); |
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75 | } |
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76 | } |
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77 | |
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78 | void |
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79 | sockinfo::set (const conf_node *conf, u8 prot_) |
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80 | { |
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81 | if (prot_ == PROT_DNSv4) |
56 | } |
82 | { |
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83 | host = htonl (conf->id); port = 0; prot = prot_; |
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84 | } |
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85 | else |
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86 | set (conf->hostname, |
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87 | prot_ == PROT_UDPv4 ? conf->udp_port |
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88 | : prot_ == PROT_TCPv4 ? conf->tcp_port |
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89 | : prot_ == PROT_DNSv4 ? conf->dns_port |
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90 | : 0, |
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91 | prot_); |
57 | } |
92 | } |
58 | |
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59 | |
93 | |
60 | const sockaddr * |
94 | const sockaddr * |
61 | sockinfo::sav4() const |
95 | sockinfo::sav4() const |
62 | { |
96 | { |
63 | static sockaddr_in sa; |
97 | static sockaddr_in sa; |
… | |
… | |
67 | sa.sin_addr.s_addr = host; |
101 | sa.sin_addr.s_addr = host; |
68 | |
102 | |
69 | return (const sockaddr *)&sa; |
103 | return (const sockaddr *)&sa; |
70 | } |
104 | } |
71 | |
105 | |
72 | static char hostport[15 + 1 + 5 + 1]; // IPv4 : port |
106 | static char hostport[10 + 15 + 1 + 5 + 1]; // proto / IPv4 : port |
73 | |
107 | |
74 | const char * |
108 | const char * |
75 | sockinfo::ntoa () const |
109 | sockinfo::ntoa () const |
76 | { |
110 | { |
77 | in_addr ia = { host }; |
111 | in_addr ia = { host }; |
… | |
… | |
83 | |
117 | |
84 | sockinfo::operator const char *() const |
118 | sockinfo::operator const char *() const |
85 | { |
119 | { |
86 | in_addr ia = { host }; |
120 | in_addr ia = { host }; |
87 | |
121 | |
88 | sprintf (hostport, "%.15s:%d", inet_ntoa (ia), ntohs (port) & 0xffff); |
122 | sprintf (hostport, "%s/%.15s:%d", strprotocol (prot), inet_ntoa (ia), ntohs (port) & 0xffff); |
89 | |
123 | |
90 | return hostport; |
124 | return hostport; |
91 | } |
125 | } |
92 | |
126 | |
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127 | u8 |
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128 | sockinfo::supported_protocols (conf_node *conf) |
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129 | { |
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130 | u8 protocols = prot; |
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131 | |
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132 | if (prot & (PROT_IPv4 | PROT_ICMPv4 | PROT_UDPv4 | PROT_TCPv4)) |
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133 | protocols |= PROT_IPv4 | PROT_ICMPv4; |
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134 | |
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135 | if (conf && prot & PROTv4) |
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136 | { |
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137 | if (conf->protocols & PROT_UDPv4 && conf->udp_port) |
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138 | protocols |= PROT_UDPv4; |
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139 | |
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140 | if (conf->protocols & PROT_TCPv4 && conf->tcp_port) |
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141 | protocols |= PROT_TCPv4; |
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142 | |
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143 | if (conf->protocols & PROT_DNSv4 && conf->dns_port) |
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144 | protocols |= PROT_DNSv4; |
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145 | } |
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146 | |
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147 | return protocols; |
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148 | } |
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149 | |
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150 | bool |
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151 | sockinfo::upgrade_protocol (u8 prot_, conf_node *conf) |
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152 | { |
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153 | if (prot_ == prot) |
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154 | return true; |
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155 | |
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156 | if (prot & PROTv4 |
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157 | && prot_ & PROTv4) |
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158 | { |
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159 | if (prot_ & (PROT_IPv4 | PROT_ICMPv4)) |
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160 | { |
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161 | prot = prot_; |
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162 | port = 0; |
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163 | return true; |
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164 | } |
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165 | |
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166 | if (conf |
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167 | && prot_ & PROT_UDPv4 |
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168 | && conf->protocols & PROT_UDPv4 |
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169 | && conf->udp_port) |
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170 | { |
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171 | prot = prot_; |
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172 | port = htons (conf->udp_port); |
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173 | return true; |
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174 | } |
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175 | |
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176 | if (conf |
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177 | && prot_ & PROT_TCPv4 |
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178 | && conf->protocols & PROT_TCPv4 |
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179 | && conf->tcp_port) |
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180 | { |
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181 | prot = prot_; |
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182 | port = htons (conf->tcp_port); |
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183 | return true; |
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184 | } |
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185 | } |
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186 | |
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187 | return false; |
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188 | } |
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189 | |
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190 | bool |
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191 | operator == (const sockinfo &a, const sockinfo &b) |
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192 | { |
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193 | return a.host == b.host && a.port == b.port && a.prot == b.prot; |
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194 | } |
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195 | |
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196 | bool |
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197 | operator < (const sockinfo &a, const sockinfo &b) |
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198 | { |
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199 | return a.host < b.host |
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200 | || (a.host == b.host && (a.port < b.port |
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201 | || (a.port == b.port && a.prot < b.prot))); |
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202 | } |
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203 | |