|
0
|
1 /* Distributed Checksum Clearinghouse |
|
|
2 * |
|
|
3 * Copyright (c) 2008 by Rhyolite Software, LLC |
|
|
4 * |
|
|
5 * This agreement is not applicable to any entity which sells anti-spam |
|
|
6 * solutions to others or provides an anti-spam solution as part of a |
|
|
7 * security solution sold to other entities, or to a private network |
|
|
8 * which employs the DCC or uses data provided by operation of the DCC |
|
|
9 * but does not provide corresponding data to other users. |
|
|
10 * |
|
|
11 * Permission to use, copy, modify, and distribute this software without |
|
|
12 * changes for any purpose with or without fee is hereby granted, provided |
|
|
13 * that the above copyright notice and this permission notice appear in all |
|
|
14 * copies and any distributed versions or copies are either unchanged |
|
|
15 * or not called anything similar to "DCC" or "Distributed Checksum |
|
|
16 * Clearinghouse". |
|
|
17 * |
|
|
18 * Parties not eligible to receive a license under this agreement can |
|
|
19 * obtain a commercial license to use DCC by contacting Rhyolite Software |
|
|
20 * at sales@rhyolite.com. |
|
|
21 * |
|
|
22 * A commercial license would be for Distributed Checksum and Reputation |
|
|
23 * Clearinghouse software. That software includes additional features. This |
|
|
24 * free license for Distributed ChecksumClearinghouse Software does not in any |
|
|
25 * way grant permision to use Distributed Checksum and Reputation Clearinghouse |
|
|
26 * software |
|
|
27 * |
|
|
28 * THE SOFTWARE IS PROVIDED "AS IS" AND RHYOLITE SOFTWARE, LLC DISCLAIMS ALL |
|
|
29 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES |
|
|
30 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL RHYOLITE SOFTWARE, LLC |
|
|
31 * BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES |
|
|
32 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, |
|
|
33 * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, |
|
|
34 * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
|
|
35 * SOFTWARE. |
|
|
36 * |
|
|
37 * Rhyolite Software DCC 1.3.103-1.42 $Revision$ |
|
|
38 */ |
|
|
39 |
|
|
40 #include "dcc_defs.h" |
|
|
41 #ifndef DCC_WIN32 |
|
|
42 #include <arpa/inet.h> |
|
|
43 #endif |
|
|
44 |
|
|
45 #if !defined(HAVE_INET_NTOP) || defined(NO_IPV6) |
|
|
46 #define DCC_INET_NTOP dcc_inet_ntop |
|
|
47 extern const char *DCC_INET_NTOP(int, const void *, char *, size_t); |
|
|
48 #else |
|
|
49 #define DCC_INET_NTOP inet_ntop |
|
|
50 #endif |
|
|
51 |
|
|
52 |
|
|
53 |
|
|
54 /* strip IPv6 prefix from ::ffff:10.2.3.4 */ |
|
|
55 const char * |
|
|
56 dcc_trim_ffff(const char *str) |
|
|
57 { |
|
|
58 return strncmp("::ffff:", str, 7) ? str : (str+7); |
|
|
59 } |
|
|
60 |
|
|
61 |
|
|
62 |
|
|
63 const char * |
|
|
64 dcc_ipv4tostr(char *buf, int buf_len, const struct in_addr *addr4) |
|
|
65 { |
|
|
66 if (!DCC_INET_NTOP(AF_INET, addr4, buf, buf_len)) |
|
|
67 STRLCPY(buf, "???", buf_len); |
|
|
68 return buf; |
|
|
69 } |
|
|
70 |
|
|
71 |
|
|
72 |
|
|
73 const char * |
|
|
74 dcc_ipv6tostr(char *buf, int buf_len, const struct in6_addr *addr6) |
|
|
75 { |
|
|
76 if (!DCC_INET_NTOP(AF_INET6, addr6, buf, buf_len)) |
|
|
77 STRLCPY(buf, "???", buf_len); |
|
|
78 return buf; |
|
|
79 } |
|
|
80 |
|
|
81 |
|
|
82 |
|
|
83 const char * |
|
|
84 dcc_ipv6tostr2(char *buf, int buf_len, const struct in6_addr *addr6) |
|
|
85 { |
|
|
86 struct in_addr addr4; |
|
|
87 |
|
|
88 if (dcc_ipv6toipv4(&addr4, addr6)) |
|
|
89 return dcc_ipv4tostr(buf, buf_len, &addr4); |
|
|
90 |
|
|
91 if (!DCC_INET_NTOP(AF_INET6, addr6, buf, buf_len)) |
|
|
92 STRLCPY(buf, "???", buf_len); |
|
|
93 return buf; |
|
|
94 } |
|
|
95 |
|
|
96 |
|
|
97 |
|
|
98 const char * |
|
|
99 dcc_ip2str(char *buf, int buf_len, const DCC_IP *ip) |
|
|
100 { |
|
|
101 if (ip->family == AF_INET) |
|
|
102 return dcc_ipv4tostr(buf, buf_len, &ip->u.v4); |
|
|
103 else |
|
|
104 return dcc_ipv6tostr(buf, buf_len, &ip->u.v6); |
|
|
105 } |
|
|
106 |
|
|
107 |
|
|
108 |
|
|
109 /* convert to a string including the port number. |
|
|
110 * try to make a short IPv4 string */ |
|
|
111 const char * |
|
|
112 dcc_su2str(char *buf, int buf_len, const DCC_SOCKU *su) |
|
|
113 { |
|
|
114 int i; |
|
|
115 |
|
|
116 if (su->sa.sa_family == AF_INET) { |
|
|
117 dcc_ipv4tostr(buf, buf_len, &su->ipv4.sin_addr); |
|
|
118 } else { |
|
|
119 dcc_ipv6tostr2(buf, buf_len, &su->ipv6.sin6_addr); |
|
|
120 } |
|
|
121 i = strlen(buf); |
|
|
122 snprintf(buf+i, buf_len-i, ",%d", ntohs(*DCC_SU_PORTP(su))); |
|
|
123 return buf; |
|
|
124 } |
|
|
125 |
|
|
126 |
|
|
127 |
|
|
128 /* convert to a string without the port number. |
|
|
129 * try to make a short IPv4 string */ |
|
|
130 const char * |
|
|
131 dcc_su2str2(char *buf, int buf_len, const DCC_SOCKU *su) |
|
|
132 { |
|
|
133 if (su->sa.sa_family == AF_INET) |
|
|
134 return dcc_ipv4tostr(buf, buf_len, &su->ipv4.sin_addr); |
|
|
135 |
|
|
136 return dcc_ipv6tostr2(buf, buf_len, &su->ipv6.sin6_addr); |
|
|
137 } |
|
|
138 |
|
|
139 |
|
|
140 |
|
|
141 /* convert to a string without a boring port number |
|
|
142 * try to make a short IPv4 string */ |
|
|
143 const char * |
|
|
144 dcc_su2str3(char *buf, int buf_len, const DCC_SOCKU *su, u_short port) |
|
|
145 { |
|
|
146 if (*DCC_SU_PORTP(su) != port) { |
|
|
147 return dcc_su2str(buf, buf_len, su); |
|
|
148 } else { |
|
|
149 return dcc_su2str2(buf, buf_len, su); |
|
|
150 } |
|
|
151 } |
|
|
152 |
|
|
153 |
|
|
154 |
|
|
155 /* Convert IP address to a string, but not into a single buffer |
|
|
156 * This is not thread safe but good enough for error messages */ |
|
|
157 const char * |
|
|
158 dcc_su2str_err(const DCC_SOCKU *su) |
|
|
159 { |
|
|
160 static int bufno; |
|
|
161 static struct { |
|
|
162 char str[DCC_SU2STR_SIZE]; |
|
|
163 } bufs[4]; |
|
|
164 char *s; |
|
|
165 |
|
|
166 s = bufs[bufno].str; |
|
|
167 bufno = (bufno+1) % DIM(bufs); |
|
|
168 return dcc_su2str(s, sizeof(bufs[0].str), su); |
|
|
169 } |
|
|
170 |
|
|
171 |
|
|
172 |
|
|
173 const char * |
|
|
174 dcc_host_portname(char *buf, int buf_len, |
|
|
175 const char *hostname, const char *portname) |
|
|
176 { |
|
|
177 if (!portname || *portname == '\0' || !strcmp(portname, "-")) { |
|
|
178 STRLCPY(buf, hostname, buf_len); |
|
|
179 } else { |
|
|
180 snprintf(buf, buf_len, "%s,%s", hostname, portname); |
|
|
181 } |
|
|
182 return buf; |
|
|
183 } |
|
|
184 |
|
|
185 |
|
|
186 |
|
|
187 /* Convert IP address to a name */ |
|
|
188 const char * |
|
|
189 dcc_su2name(char *name, int name_len, const DCC_SOCKU *su) |
|
|
190 { |
|
|
191 #undef EXPANDED |
|
|
192 #if defined(USE_GETIPNODEBYNAME) && !defined(EXPANDED) && !defined(NO_IPV6) |
|
|
193 #define EXPANDED |
|
|
194 struct hostent *hp; |
|
|
195 int error; |
|
|
196 |
|
|
197 dcc_host_lock(); |
|
|
198 if (su->sa.sa_family == AF_INET) |
|
|
199 hp = getipnodebyaddr(&su->ipv4.sin_addr, |
|
|
200 sizeof(su->ipv4.sin_addr), |
|
|
201 su->sa.sa_family, &error); |
|
|
202 else |
|
|
203 hp = getipnodebyaddr(&su->ipv6.sin6_addr, |
|
|
204 sizeof(su->ipv6.sin6_addr), |
|
|
205 su->sa.sa_family, &error); |
|
|
206 if (!hp) { |
|
|
207 if (name_len > 0) |
|
|
208 *name = '\0'; |
|
|
209 } else { |
|
|
210 if (name_len > 0) |
|
|
211 STRLCPY(name, hp->h_name, name_len); |
|
|
212 freehostent(hp); |
|
|
213 } |
|
|
214 dcc_host_unlock(); |
|
|
215 #endif |
|
|
216 #if defined(USE_GETADDRINFO) && !defined(EXPANDED) && !defined(NO_IPV6) |
|
|
217 #define EXPANDED |
|
|
218 int error; |
|
|
219 |
|
|
220 dcc_host_lock(); |
|
|
221 error = getnameinfo(&su->sa, DCC_SU_LEN(su), |
|
|
222 name, name_len, 0, 0, NI_NAMEREQD); |
|
|
223 dcc_host_unlock(); |
|
|
224 if (error && name_len > 0) |
|
|
225 *name = '\0'; |
|
|
226 #endif |
|
|
227 #ifndef EXPANDED |
|
|
228 struct hostent *hp; |
|
|
229 DCC_SOCKU su4; |
|
|
230 |
|
|
231 dcc_host_lock(); |
|
|
232 if (dcc_ipv6sutoipv4(&su4, su)) { |
|
|
233 hp = gethostbyaddr((char *)&su4.ipv4.sin_addr, |
|
|
234 sizeof(su4.ipv4.sin_addr), |
|
|
235 AF_INET); |
|
|
236 } else { |
|
|
237 hp = 0; |
|
|
238 } |
|
|
239 if (name_len > 0) |
|
|
240 STRLCPY(name, hp ? hp->h_name : "", name_len); |
|
|
241 dcc_host_unlock(); |
|
|
242 #endif |
|
|
243 return name; |
|
|
244 #undef EXPANDED |
|
|
245 } |
