| 1 | /* |
1 | /* |
| 2 | sockinfo.c -- socket address management |
2 | sockinfo.C -- socket address management |
|
|
3 | Copyright (C) 2003 Marc Lehmann <pcg@goof.com> |
| 3 | |
4 | |
| 4 | This program is free software; you can redistribute it and/or modify |
5 | This program is free software; you can redistribute it and/or modify |
| 5 | it under the terms of the GNU General Public License as published by |
6 | 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 |
7 | the Free Software Foundation; either version 2 of the License, or |
| 7 | (at your option) any later version. |
8 | (at your option) any later version. |
| … | |
… | |
| 16 | Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
17 | Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 17 | */ |
18 | */ |
| 18 | |
19 | |
| 19 | #include "config.h" |
20 | #include "config.h" |
| 20 | |
21 | |
| 21 | #include "arpa/inet.h" |
22 | #include <netdb.h> |
| 22 | |
23 | |
| 23 | #include "gettext.h" |
24 | #include "gettext.h" |
| 24 | |
25 | |
| 25 | #include "sockinfo.h" |
26 | #include "sockinfo.h" |
| 26 | #include "slog.h" |
27 | #include "slog.h" |
| 27 | |
28 | |
|
|
29 | // all ipv4-based protocols |
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30 | #define PROTv4 (PROT_UDPv4 | PROT_TCPv4 | PROT_ICMPv4 | PROT_IPv4 | PROT_DNSv4) |
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31 | |
| 28 | void sockinfo::set (const sockaddr_in *sa, u8 prot_) |
32 | void sockinfo::set (const sockaddr_in *sa, u8 prot_) |
| 29 | { |
33 | { |
| 30 | host = sa->sin_addr.s_addr; |
34 | host = sa->sin_addr.s_addr; |
| 31 | port = prot_ == PROT_IPv4 ? 0 : sa->sin_port; |
35 | port = prot_ & (PROT_IPv4 | PROT_ICMPv4) ? 0 : sa->sin_port; |
| 32 | prot = prot_; |
36 | prot = prot_; |
| 33 | } |
37 | } |
| 34 | |
38 | |
| 35 | void |
39 | void sockinfo::set (const char *hostname, u16 port_, u8 prot_) |
| 36 | sockinfo::set (const conf_node *conf) |
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|
| 37 | { |
40 | { |
|
|
41 | prot = prot_; |
| 38 | host = 0; |
42 | host = 0; |
| 39 | port = htons (conf->udp_port); |
43 | port = htons (port_); |
| 40 | |
44 | |
| 41 | if (conf->hostname) |
45 | if (prot & PROTv4 |
|
|
46 | && hostname) |
| 42 | { |
47 | { |
| 43 | struct hostent *he = gethostbyname (conf->hostname); |
48 | struct hostent *he = gethostbyname (hostname); |
| 44 | |
49 | |
| 45 | if (he |
50 | if (he |
| 46 | && he->h_addrtype == AF_INET && he->h_length == 4 && he->h_addr_list[0]) |
51 | && he->h_addrtype == AF_INET && he->h_length == 4 && he->h_addr_list[0]) |
| 47 | { |
52 | { |
| 48 | //sa->sin_family = he->h_addrtype; |
53 | //sa->sin_family = he->h_addrtype; |
| 49 | memcpy (&host, he->h_addr_list[0], 4); |
54 | memcpy (&host, he->h_addr_list[0], 4); |
| 50 | |
|
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| 51 | prot = PROT_UDPv4 | PROT_IPv4; |
|
|
| 52 | } |
55 | } |
| 53 | else |
56 | else |
| 54 | slog (L_NOTICE, _("unable to resolve host '%s'"), conf->hostname); |
57 | slog (L_NOTICE, _("unable to resolve host '%s'"), hostname); |
| 55 | } |
58 | } |
| 56 | } |
59 | } |
| 57 | |
60 | |
|
|
61 | void |
|
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62 | sockinfo::set (const conf_node *conf, u8 prot_) |
|
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63 | { |
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64 | if (prot_ == PROT_DNSv4) |
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65 | set (conf->dns_hostname, conf->dns_hostname ? conf->dns_port : 0, prot_); |
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66 | else |
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67 | set (conf->hostname, |
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68 | prot_ == PROT_UDPv4 ? conf->udp_port |
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69 | : prot_ == PROT_TCPv4 ? conf->tcp_port |
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70 | : prot_ == PROT_DNSv4 ? conf->dns_port |
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71 | : 0, |
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72 | prot_); |
|
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73 | } |
| 58 | |
74 | |
| 59 | const sockaddr * |
75 | const sockaddr * |
| 60 | sockinfo::sav4() const |
76 | sockinfo::sav4() const |
| 61 | { |
77 | { |
| 62 | static sockaddr_in sa; |
78 | static sockaddr_in sa; |
| … | |
… | |
| 66 | sa.sin_addr.s_addr = host; |
82 | sa.sin_addr.s_addr = host; |
| 67 | |
83 | |
| 68 | return (const sockaddr *)&sa; |
84 | return (const sockaddr *)&sa; |
| 69 | } |
85 | } |
| 70 | |
86 | |
| 71 | static char hostport[15 + 1 + 5 + 1]; // IPv4 : port |
87 | static char hostport[10 + 15 + 1 + 5 + 1]; // proto / IPv4 : port |
| 72 | |
88 | |
| 73 | const char * |
89 | const char * |
| 74 | sockinfo::ntoa () const |
90 | sockinfo::ntoa () const |
| 75 | { |
91 | { |
| 76 | in_addr ia = { host }; |
92 | in_addr ia = { host }; |
| … | |
… | |
| 82 | |
98 | |
| 83 | sockinfo::operator const char *() const |
99 | sockinfo::operator const char *() const |
| 84 | { |
100 | { |
| 85 | in_addr ia = { host }; |
101 | in_addr ia = { host }; |
| 86 | |
102 | |
| 87 | sprintf (hostport, "%.15s:%d", inet_ntoa (ia), ntohs (port) & 0xffff); |
103 | sprintf (hostport, "%s/%.15s:%d", strprotocol (prot), inet_ntoa (ia), ntohs (port) & 0xffff); |
| 88 | |
104 | |
| 89 | return hostport; |
105 | return hostport; |
| 90 | } |
106 | } |
| 91 | |
107 | |
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108 | u8 |
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109 | sockinfo::supported_protocols (conf_node *conf) |
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110 | { |
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111 | u8 protocols = prot; |
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112 | |
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113 | if (prot & (PROT_UDPv4 | PROT_TCPv4)) |
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114 | protocols |= PROT_IPv4 | PROT_ICMPv4; |
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115 | |
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116 | if (conf |
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117 | && prot & PROTv4 |
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118 | && conf->protocols & PROT_UDPv4 |
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119 | && conf->udp_port) |
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120 | protocols |= PROT_UDPv4; |
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121 | |
|
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122 | if (conf |
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123 | && prot & PROTv4 |
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124 | && conf->protocols & PROT_TCPv4 |
|
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125 | && conf->tcp_port) |
|
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126 | protocols |= PROT_TCPv4; |
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127 | |
|
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128 | if (conf |
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129 | && prot & PROTv4 |
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130 | && conf->protocols & PROT_DNSv4 |
|
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131 | && conf->dns_port) |
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132 | protocols |= PROT_DNSv4; |
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133 | |
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134 | return protocols; |
|
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135 | } |
|
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136 | |
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137 | bool |
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138 | sockinfo::upgrade_protocol (u8 prot_, conf_node *conf) |
|
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139 | { |
|
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140 | if (prot_ == prot) |
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141 | return true; |
|
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142 | |
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143 | if (prot & PROTv4 |
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144 | && prot_ & PROTv4) |
|
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145 | { |
|
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146 | if (prot_ & (PROT_IPv4 | PROT_ICMPv4)) |
|
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147 | { |
|
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148 | prot = prot_; |
|
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149 | port = 0; |
|
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150 | return true; |
|
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151 | } |
|
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152 | |
|
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153 | if (conf |
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154 | && prot_ & PROT_UDPv4 |
|
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155 | && conf->protocols & PROT_UDPv4 |
|
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156 | && conf->udp_port) |
|
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157 | { |
|
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158 | prot = prot_; |
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159 | port = htons (conf->udp_port); |
|
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160 | return true; |
|
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161 | } |
|
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162 | |
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163 | if (conf |
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164 | && prot_ & PROT_TCPv4 |
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165 | && conf->protocols & PROT_TCPv4 |
|
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166 | && conf->tcp_port) |
|
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167 | { |
|
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168 | prot = prot_; |
|
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169 | port = htons (conf->tcp_port); |
|
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170 | return true; |
|
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171 | } |
|
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172 | |
|
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173 | #if ENABLE_DNS |
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174 | if (conf |
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175 | && prot_ & PROT_DNSv4 |
|
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176 | && conf->protocols & PROT_DNSv4 |
|
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177 | && conf->dns_port) |
|
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178 | { |
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179 | set (::conf.dns_forw_host, ::conf.dns_forw_port, prot_); |
|
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180 | return true; |
|
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181 | } |
|
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182 | #endif |
|
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183 | } |
|
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184 | |
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185 | return false; |
|
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186 | } |
|
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187 | |
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188 | bool |
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189 | operator == (const sockinfo &a, const sockinfo &b) |
|
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190 | { |
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191 | return a.host == b.host && a.port == b.port && a.prot == b.prot; |
|
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192 | } |
|
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193 | |
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194 | bool |
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195 | operator < (const sockinfo &a, const sockinfo &b) |
|
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196 | { |
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197 | return a.host < b.host |
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198 | || (a.host == b.host && (a.port < b.port |
|
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199 | || (a.port == b.port && a.prot < b.prot))); |
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200 | } |
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201 | |
