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 | |
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34 | // for gethostbyname |
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35 | #include <netdb.h> |
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36 | |
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37 | // for inet_aton |
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38 | #include <sys/socket.h> |
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39 | #include <netinet/in.h> |
21 | #include <arpa/inet.h> |
40 | #include <arpa/inet.h> |
22 | #include <netdb.h> |
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23 | |
41 | |
24 | #include "gettext.h" |
42 | #include "gettext.h" |
25 | |
43 | |
26 | #include "sockinfo.h" |
44 | #include "sockinfo.h" |
27 | #include "slog.h" |
45 | #include "slog.h" |
28 | |
46 | |
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47 | #include <cstring> |
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48 | #include <cstdio> |
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49 | |
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50 | // all ipv4-based protocols |
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51 | #define PROTv4 (PROT_UDPv4 | PROT_TCPv4 | PROT_ICMPv4 | PROT_IPv4 | PROT_DNSv4) |
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52 | |
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53 | void |
29 | void sockinfo::set (const sockaddr_in *sa, u8 prot_) |
54 | sockinfo::set (const sockaddr_in *sa, u8 prot_) |
30 | { |
55 | { |
31 | host = sa->sin_addr.s_addr; |
56 | host = sa->sin_addr.s_addr; |
32 | port = prot_ == PROT_IPv4 ? 0 : sa->sin_port; |
57 | port = prot_ & (PROT_IPv4 | PROT_ICMPv4) ? 0 : sa->sin_port; |
33 | prot = prot_; |
58 | prot = prot_; |
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59 | } |
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60 | |
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61 | void |
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62 | sockinfo::set (const char *hostname, u16 port_, u8 prot_) |
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63 | { |
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64 | prot = prot_; |
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65 | host = 0; |
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66 | port = htons (port_); |
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67 | |
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68 | if (prot & PROTv4 |
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69 | && hostname) |
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70 | { |
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71 | struct in_addr in; |
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72 | struct hostent *he; |
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73 | |
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74 | if (inet_aton (hostname, &in)) |
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75 | { |
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76 | host = in.s_addr; |
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77 | } |
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78 | else if ((he = gethostbyname (hostname)) |
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79 | && he->h_addrtype == AF_INET |
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80 | && he->h_length == 4 |
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81 | && he->h_addr_list[0]) |
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82 | { |
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83 | //sa->sin_family = he->h_addrtype; |
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84 | memcpy (&host, he->h_addr_list[0], 4); |
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85 | } |
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86 | else |
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87 | slog (L_NOTICE, _("unable to resolve host '%s'"), hostname); |
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88 | } |
34 | } |
89 | } |
35 | |
90 | |
36 | void |
91 | void |
37 | sockinfo::set (const conf_node *conf, u8 prot_) |
92 | sockinfo::set (const conf_node *conf, u8 prot_) |
38 | { |
93 | { |
39 | prot = prot_; |
94 | if (prot_ == PROT_DNSv4) |
40 | host = 0; |
95 | { |
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96 | host = htonl (conf->id); port = 0; prot = prot_; |
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97 | } |
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98 | else |
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99 | set (conf->hostname, |
41 | port = prot == PROT_UDPv4 ? htons (conf->udp_port) |
100 | prot_ == PROT_UDPv4 ? conf->udp_port |
42 | : prot == PROT_TCPv4 ? htons (conf->tcp_port) |
101 | : prot_ == PROT_TCPv4 ? conf->tcp_port |
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102 | : prot_ == PROT_DNSv4 ? conf->dns_port |
43 | : 0; |
103 | : 0, |
44 | |
104 | prot_); |
45 | if (prot && conf->hostname) |
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46 | { |
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47 | struct hostent *he = gethostbyname (conf->hostname); |
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48 | |
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49 | if (he |
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50 | && he->h_addrtype == AF_INET && he->h_length == 4 && he->h_addr_list[0]) |
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51 | { |
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52 | //sa->sin_family = he->h_addrtype; |
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53 | memcpy (&host, he->h_addr_list[0], 4); |
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54 | |
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55 | } |
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56 | else |
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57 | slog (L_NOTICE, _("unable to resolve host '%s'"), conf->hostname); |
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58 | } |
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59 | } |
105 | } |
60 | |
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61 | |
106 | |
62 | const sockaddr * |
107 | const sockaddr * |
63 | sockinfo::sav4() const |
108 | sockinfo::sav4() const |
64 | { |
109 | { |
65 | static sockaddr_in sa; |
110 | static sockaddr_in sa; |
… | |
… | |
69 | sa.sin_addr.s_addr = host; |
114 | sa.sin_addr.s_addr = host; |
70 | |
115 | |
71 | return (const sockaddr *)&sa; |
116 | return (const sockaddr *)&sa; |
72 | } |
117 | } |
73 | |
118 | |
74 | static char hostport[10 + 15 + 1 + 5 + 1]; // protype / IPv4 : port |
119 | static char hostport[10 + 15 + 1 + 5 + 1]; // proto / IPv4 : port |
75 | |
120 | |
76 | const char * |
121 | const char * |
77 | sockinfo::ntoa () const |
122 | sockinfo::ntoa () const |
78 | { |
123 | { |
79 | in_addr ia = { host }; |
124 | in_addr ia = { host }; |
… | |
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81 | sprintf (hostport, "%.15s", inet_ntoa (ia)); |
126 | sprintf (hostport, "%.15s", inet_ntoa (ia)); |
82 | |
127 | |
83 | return hostport; |
128 | return hostport; |
84 | } |
129 | } |
85 | |
130 | |
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131 | bool |
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132 | sockinfo::valid () const |
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133 | { |
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134 | return (prot & THISNODE->protocols) && host; |
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135 | } |
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136 | |
86 | sockinfo::operator const char *() const |
137 | sockinfo::operator const char *() const |
87 | { |
138 | { |
88 | in_addr ia = { host }; |
139 | in_addr ia = { host }; |
89 | |
140 | |
90 | sprintf (hostport, "%s/%.15s:%d", strprotocol (prot), inet_ntoa (ia), ntohs (port) & 0xffff); |
141 | sprintf (hostport, "%s/%.15s:%d", strprotocol (prot), inet_ntoa (ia), ntohs (port) & 0xffff); |
91 | |
142 | |
92 | return hostport; |
143 | return hostport; |
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144 | } |
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145 | |
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146 | u8 |
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147 | sockinfo::supported_protocols (conf_node *conf) |
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148 | { |
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149 | u8 protocols = prot; |
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150 | |
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151 | if (prot & (PROT_IPv4 | PROT_ICMPv4 | PROT_UDPv4 | PROT_TCPv4)) |
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152 | protocols |= PROT_IPv4 | PROT_ICMPv4; |
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153 | |
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154 | if (conf && prot & PROTv4) |
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155 | { |
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156 | if (conf->protocols & PROT_UDPv4 && conf->udp_port) |
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157 | protocols |= PROT_UDPv4; |
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158 | |
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159 | if (conf->protocols & PROT_TCPv4 && conf->tcp_port) |
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160 | protocols |= PROT_TCPv4; |
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161 | |
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162 | if (conf->protocols & PROT_DNSv4 && conf->dns_port) |
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163 | protocols |= PROT_DNSv4; |
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164 | } |
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165 | |
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166 | return protocols; |
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167 | } |
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168 | |
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169 | bool |
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170 | sockinfo::upgrade_protocol (u8 prot_, conf_node *conf) |
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171 | { |
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172 | if (prot_ == prot) |
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173 | return true; |
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174 | |
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175 | if (prot & PROTv4 |
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176 | && prot_ & PROTv4) |
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177 | { |
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178 | if (prot_ & (PROT_IPv4 | PROT_ICMPv4)) |
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179 | { |
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180 | prot = prot_; |
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181 | port = 0; |
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182 | return true; |
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183 | } |
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184 | |
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185 | if (conf |
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186 | && prot_ & PROT_UDPv4 |
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187 | && conf->protocols & PROT_UDPv4 |
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188 | && conf->udp_port) |
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189 | { |
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190 | prot = prot_; |
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191 | port = htons (conf->udp_port); |
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192 | return true; |
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193 | } |
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194 | |
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195 | if (conf |
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196 | && prot_ & PROT_TCPv4 |
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197 | && conf->protocols & PROT_TCPv4 |
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198 | && conf->tcp_port) |
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199 | { |
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200 | prot = prot_; |
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201 | port = htons (conf->tcp_port); |
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202 | return true; |
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203 | } |
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204 | } |
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205 | |
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206 | return false; |
93 | } |
207 | } |
94 | |
208 | |
95 | bool |
209 | bool |
96 | operator == (const sockinfo &a, const sockinfo &b) |
210 | operator == (const sockinfo &a, const sockinfo &b) |
97 | { |
211 | { |