1 | /* |
1 | /* |
2 | sockinfo.c -- socket address management |
2 | sockinfo.C -- socket address management |
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3 | Copyright (C) 2003 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 |
5 | it under the terms of the GNU General Public License as published by |
8 | it under the terms of the GNU General Public License as published by |
6 | the Free Software Foundation; either version 2 of the License, or |
9 | the Free Software Foundation; either version 2 of the License, or |
7 | (at your option) any later version. |
10 | (at your 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, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | but 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 |
12 | GNU General Public License for more details. |
15 | GNU General 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 |
15 | along with this program; if not, write to the Free Software |
18 | along with gvpe; if not, write to the Free Software |
16 | Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
17 | */ |
20 | */ |
18 | |
21 | |
19 | #include "config.h" |
22 | #include "config.h" |
20 | |
23 | |
21 | #include <arpa/inet.h> |
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22 | #include <netdb.h> |
24 | #include <netdb.h> |
23 | |
25 | |
24 | #include "gettext.h" |
26 | #include "gettext.h" |
25 | |
27 | |
26 | #include "sockinfo.h" |
28 | #include "sockinfo.h" |
27 | #include "slog.h" |
29 | #include "slog.h" |
28 | |
30 | |
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31 | #include <cstring> |
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32 | #include <cstdio> |
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33 | |
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34 | // all ipv4-based protocols |
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35 | #define PROTv4 (PROT_UDPv4 | PROT_TCPv4 | PROT_ICMPv4 | PROT_IPv4 | PROT_DNSv4) |
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36 | |
29 | void sockinfo::set (const sockaddr_in *sa, u8 prot_) |
37 | void sockinfo::set (const sockaddr_in *sa, u8 prot_) |
30 | { |
38 | { |
31 | host = sa->sin_addr.s_addr; |
39 | host = sa->sin_addr.s_addr; |
32 | port = prot_ == PROT_IPv4 ? 0 : sa->sin_port; |
40 | port = prot_ & (PROT_IPv4 | PROT_ICMPv4) ? 0 : sa->sin_port; |
33 | prot = prot_; |
41 | prot = prot_; |
34 | } |
42 | } |
35 | |
43 | |
36 | void |
44 | void sockinfo::set (const char *hostname, u16 port_, u8 prot_) |
37 | sockinfo::set (const conf_node *conf, u8 prot_) |
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38 | { |
45 | { |
39 | prot = prot_; |
46 | prot = prot_; |
40 | host = 0; |
47 | host = 0; |
41 | port = prot_ == PROT_UDPv4 ? htons (conf->udp_port) |
48 | port = htons (port_); |
42 | : prot_ == PROT_TCPv4 ? htons (conf->tcp_port) |
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43 | : 0; |
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44 | |
49 | |
45 | if (conf->hostname) |
50 | if (prot & PROTv4 |
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51 | && hostname) |
46 | { |
52 | { |
47 | struct hostent *he = gethostbyname (conf->hostname); |
53 | struct hostent *he = gethostbyname (hostname); |
48 | |
54 | |
49 | if (he |
55 | if (he |
50 | && he->h_addrtype == AF_INET && he->h_length == 4 && he->h_addr_list[0]) |
56 | && he->h_addrtype == AF_INET && he->h_length == 4 && he->h_addr_list[0]) |
51 | { |
57 | { |
52 | //sa->sin_family = he->h_addrtype; |
58 | //sa->sin_family = he->h_addrtype; |
53 | memcpy (&host, he->h_addr_list[0], 4); |
59 | memcpy (&host, he->h_addr_list[0], 4); |
54 | |
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55 | } |
60 | } |
56 | else |
61 | else |
57 | slog (L_NOTICE, _("unable to resolve host '%s'"), conf->hostname); |
62 | slog (L_NOTICE, _("unable to resolve host '%s'"), hostname); |
58 | } |
63 | } |
59 | } |
64 | } |
60 | |
65 | |
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66 | void |
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67 | sockinfo::set (const conf_node *conf, u8 prot_) |
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68 | { |
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69 | if (prot_ == PROT_DNSv4) |
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70 | { |
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71 | host = htonl (conf->id); port = 0; prot = prot_; |
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72 | } |
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73 | else |
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74 | set (conf->hostname, |
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75 | prot_ == PROT_UDPv4 ? conf->udp_port |
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76 | : prot_ == PROT_TCPv4 ? conf->tcp_port |
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77 | : prot_ == PROT_DNSv4 ? conf->dns_port |
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78 | : 0, |
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79 | prot_); |
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80 | } |
61 | |
81 | |
62 | const sockaddr * |
82 | const sockaddr * |
63 | sockinfo::sav4() const |
83 | sockinfo::sav4() const |
64 | { |
84 | { |
65 | static sockaddr_in sa; |
85 | static sockaddr_in sa; |
… | |
… | |
69 | sa.sin_addr.s_addr = host; |
89 | sa.sin_addr.s_addr = host; |
70 | |
90 | |
71 | return (const sockaddr *)&sa; |
91 | return (const sockaddr *)&sa; |
72 | } |
92 | } |
73 | |
93 | |
74 | static char hostport[15 + 1 + 5 + 1]; // IPv4 : port |
94 | static char hostport[10 + 15 + 1 + 5 + 1]; // proto / IPv4 : port |
75 | |
95 | |
76 | const char * |
96 | const char * |
77 | sockinfo::ntoa () const |
97 | sockinfo::ntoa () const |
78 | { |
98 | { |
79 | in_addr ia = { host }; |
99 | in_addr ia = { host }; |
… | |
… | |
85 | |
105 | |
86 | sockinfo::operator const char *() const |
106 | sockinfo::operator const char *() const |
87 | { |
107 | { |
88 | in_addr ia = { host }; |
108 | in_addr ia = { host }; |
89 | |
109 | |
90 | sprintf (hostport, "%.15s:%d", inet_ntoa (ia), ntohs (port) & 0xffff); |
110 | sprintf (hostport, "%s/%.15s:%d", strprotocol (prot), inet_ntoa (ia), ntohs (port) & 0xffff); |
91 | |
111 | |
92 | return hostport; |
112 | return hostport; |
93 | } |
113 | } |
94 | |
114 | |
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115 | u8 |
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116 | sockinfo::supported_protocols (conf_node *conf) |
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117 | { |
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118 | u8 protocols = prot; |
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119 | |
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120 | if (prot & (PROT_UDPv4 | PROT_TCPv4)) |
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121 | protocols |= PROT_IPv4 | PROT_ICMPv4; |
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122 | |
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123 | if (conf |
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124 | && prot & PROTv4 |
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125 | && conf->protocols & PROT_UDPv4 |
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126 | && conf->udp_port) |
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127 | protocols |= PROT_UDPv4; |
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128 | |
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129 | if (conf |
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130 | && prot & PROTv4 |
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131 | && conf->protocols & PROT_TCPv4 |
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132 | && conf->tcp_port) |
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133 | protocols |= PROT_TCPv4; |
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134 | |
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135 | if (conf |
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136 | && prot & PROTv4 |
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137 | && conf->protocols & PROT_DNSv4 |
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138 | && conf->dns_port) |
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139 | protocols |= PROT_DNSv4; |
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140 | |
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141 | return protocols; |
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142 | } |
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143 | |
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144 | bool |
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145 | sockinfo::upgrade_protocol (u8 prot_, conf_node *conf) |
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146 | { |
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147 | if (prot_ == prot) |
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148 | return true; |
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149 | |
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150 | if (prot & PROTv4 |
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151 | && prot_ & PROTv4) |
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152 | { |
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153 | if (prot_ & (PROT_IPv4 | PROT_ICMPv4)) |
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154 | { |
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155 | prot = prot_; |
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156 | port = 0; |
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157 | return true; |
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158 | } |
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159 | |
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160 | if (conf |
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161 | && prot_ & PROT_UDPv4 |
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162 | && conf->protocols & PROT_UDPv4 |
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163 | && conf->udp_port) |
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164 | { |
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165 | prot = prot_; |
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166 | port = htons (conf->udp_port); |
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167 | return true; |
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168 | } |
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169 | |
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170 | if (conf |
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171 | && prot_ & PROT_TCPv4 |
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172 | && conf->protocols & PROT_TCPv4 |
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173 | && conf->tcp_port) |
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174 | { |
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175 | prot = prot_; |
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176 | port = htons (conf->tcp_port); |
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177 | return true; |
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178 | } |
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179 | } |
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180 | |
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181 | return false; |
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182 | } |
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183 | |
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184 | bool |
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185 | operator == (const sockinfo &a, const sockinfo &b) |
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186 | { |
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187 | return a.host == b.host && a.port == b.port && a.prot == b.prot; |
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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 |
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194 | || (a.host == b.host && (a.port < b.port |
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195 | || (a.port == b.port && a.prot < b.prot))); |
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196 | } |
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197 | |