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25697a35 | 1 | /* |
94ff9470 | 2 | * SARG Squid Analysis Report Generator http://sarg.sourceforge.net |
61d965f3 | 3 | * 1998, 2012 |
25697a35 GS |
4 | * |
5 | * SARG donations: | |
6 | * please look at http://sarg.sourceforge.net/donations.php | |
1164c474 FM |
7 | * Support: |
8 | * http://sourceforge.net/projects/sarg/forums/forum/363374 | |
25697a35 GS |
9 | * --------------------------------------------------------------------- |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. | |
24 | * | |
25 | */ | |
26 | ||
27 | #include "include/conf.h" | |
5f3cfd1d | 28 | #include "include/defs.h" |
e9b33b57 | 29 | #ifdef HAVE_WS2TCPIP_H |
9bd92830 | 30 | #include <ws2tcpip.h> //define getnameinfo on windows |
e9b33b57 | 31 | #endif |
25697a35 | 32 | |
a1c55d8c | 33 | void ip2name(char *ip,int ip_len) |
9c7c6346 | 34 | { |
72c27633 | 35 | #ifdef HAVE_GETNAMEINFO |
9bd92830 | 36 | struct sockaddr_storage sa; |
a50c6319 | 37 | int sockaddr_size; |
9bd92830 FM |
38 | char host[NI_MAXHOST]; |
39 | int n1,n2,n3,n4,next=0; | |
40 | int error; | |
72c27633 | 41 | |
9bd92830 FM |
42 | memset(&sa,0,sizeof(sa)); |
43 | if (sscanf(ip,"%d.%d.%d.%d%n",&n1,&n2,&n3,&n4,&next)==4 && ip[next]=='\0') { | |
44 | struct sockaddr_in *s4=(struct sockaddr_in *)&sa; | |
45 | if (inet_pton(AF_INET,ip,&s4->sin_addr)!=1) return; | |
46 | sa.ss_family=AF_INET; | |
a50c6319 | 47 | sockaddr_size=sizeof(*s4); |
9bd92830 FM |
48 | } else { |
49 | struct sockaddr_in6 *s6=(struct sockaddr_in6 *)&sa; | |
50 | if (inet_pton(AF_INET6,ip,&s6->sin6_addr)!=1) return; | |
51 | sa.ss_family=AF_INET6; | |
a50c6319 | 52 | sockaddr_size=sizeof(*s6); |
9bd92830 | 53 | } |
a50c6319 FM |
54 | #ifdef HAVE_SOCKADDR_SA_LEN |
55 | sa.ss_len=sockaddr_size; | |
56 | #endif | |
57 | error=getnameinfo((struct sockaddr *)&sa,sockaddr_size,host,sizeof(host),NULL,0,0); | |
8fa27cb0 FM |
58 | if (error==EAI_AGAIN) { |
59 | /* | |
60 | This is a temporary failure. According to the man page we should try again but | |
61 | it doesn't say if the program should wait before trying again nor how many attempts | |
62 | before it becomes a fatal error. I could find no clues on internet so I try once and | |
63 | leave it at that. Considering the number of IP addresses to resolve and the absence | |
64 | of serious consequences should some IP fail to be resolved properly, it is best | |
65 | not waste too much time on this. | |
66 | */ | |
67 | error=getnameinfo((struct sockaddr *)&sa,sizeof(sa),host,sizeof(host),NULL,0,0); | |
68 | } | |
69 | if (error==0) { | |
a87d4d11 | 70 | safe_strcpy(ip,host,ip_len); |
9bd92830 FM |
71 | } else { |
72 | debuga(_("IP to name resolution (getnameinfo) on IP address %s failed with error %d - %s\n"),ip,error,gai_strerror(error)); | |
73 | } | |
72c27633 | 74 | #else |
9bd92830 FM |
75 | struct in_addr addr; |
76 | struct hostent *hp; | |
77 | char **p; | |
25697a35 | 78 | |
e9b33b57 | 79 | #ifdef HAVE_INET_ATON |
9bd92830 FM |
80 | if (inet_aton(ip,&addr) == 0) |
81 | return; | |
e9b33b57 | 82 | #else |
9bd92830 FM |
83 | addr.s_addr=inet_addr(ip); |
84 | if (addr.s_addr==-1) return; | |
e9b33b57 | 85 | #endif |
25697a35 | 86 | |
9bd92830 FM |
87 | hp = gethostbyaddr((void *)&addr, sizeof (addr), AF_INET); |
88 | if (hp == NULL) | |
89 | return; | |
25697a35 | 90 | |
9bd92830 FM |
91 | for (p = hp->h_addr_list; *p != 0; p++) { |
92 | struct in_addr in; | |
25697a35 | 93 | |
9bd92830 | 94 | (void) memcpy(&in.s_addr, *p, sizeof (in.s_addr)); |
a87d4d11 | 95 | safe_strcpy(ip,hp->h_name,ip_len); |
9bd92830 | 96 | } |
72c27633 | 97 | #endif |
9bd92830 | 98 | return; |
936c9905 | 99 | } |
25697a35 | 100 | |
4afbb7a5 | 101 | void name2ip(char *name,int name_size) |
9c7c6346 | 102 | { |
4afbb7a5 FM |
103 | #ifdef HAVE_GETADDRINFO |
104 | int error; | |
105 | char *port; | |
106 | struct addrinfo *res; | |
107 | char *addr; | |
108 | ||
109 | addr=name; | |
110 | if (name[0]=='[') { //IPv6 address | |
111 | port=strchr(name,']'); | |
112 | if (port) { //confirmed IPv6 address | |
113 | *port='\0'; | |
114 | addr++; | |
115 | } | |
116 | } else { //IPv4 address | |
117 | port=strchr(name,':'); | |
118 | if (port) *port='\0'; | |
119 | } | |
120 | ||
121 | error=getaddrinfo(addr,NULL,NULL,&res); | |
122 | if (error) { | |
123 | freeaddrinfo(res); | |
124 | debuga(_("Cannot resolve host name %s: %s\n"),name,gai_strerror(error)); | |
125 | exit(EXIT_FAILURE); | |
126 | } | |
127 | if (res->ai_family==AF_INET) { | |
128 | struct sockaddr_in *s4=(struct sockaddr_in *)res->ai_addr; | |
129 | struct in_addr *sa=&s4->sin_addr; | |
130 | if (res->ai_addrlen<sizeof(*s4)) { | |
45d00862 | 131 | debuga(_("Short structure returned by getaddrinfo for an IPv4 address: %d bytes instead of %d\n"),res->ai_addrlen,(int)sizeof(*s4)); |
4afbb7a5 FM |
132 | exit(EXIT_FAILURE); |
133 | } | |
134 | inet_ntop(res->ai_family,sa,name,name_size); | |
135 | } else if (res->ai_family==AF_INET6) { | |
136 | struct sockaddr_in6 *s6=(struct sockaddr_in6 *)res->ai_addr; | |
137 | struct in6_addr *sa6=&s6->sin6_addr; | |
138 | if (res->ai_addrlen<sizeof(*s6)) { | |
45d00862 | 139 | debuga(_("Short structure returned by getaddrinfo for an IPv6 address: %d bytes instead of %d\n"),res->ai_addrlen,(int)sizeof(*s6)); |
4afbb7a5 FM |
140 | exit(EXIT_FAILURE); |
141 | } | |
142 | inet_ntop(res->ai_family,sa6,name,name_size); | |
143 | } else { | |
144 | debuga(_("Invalid address type %d returned when resolving host name \"%s\"\n"),res->ai_family,name); | |
145 | } | |
146 | freeaddrinfo(res); | |
147 | #else | |
9bd92830 FM |
148 | struct in_addr ia; |
149 | struct hostent *hp; | |
150 | char *port; | |
151 | char n1[4]; | |
152 | char n2[4]; | |
153 | char n3[4]; | |
154 | char n4[4]; | |
155 | struct getwordstruct gwarea; | |
25697a35 | 156 | |
9bd92830 | 157 | port=strchr(name,':'); |
4afbb7a5 | 158 | if (port) *port='\0'; |
25697a35 | 159 | |
9bd92830 FM |
160 | if((hp=gethostbyname(name))==NULL) |
161 | return; | |
9c7c6346 | 162 | |
9bd92830 FM |
163 | memcpy(&ia.s_addr,hp->h_addr_list[0],sizeof(ia.s_addr)); |
164 | ia.s_addr=ntohl(ia.s_addr); | |
165 | getword_start(&gwarea,inet_ntoa(ia)); | |
166 | if (getword(n4,sizeof(n4),&gwarea,'.')<0 || getword(n3,sizeof(n3),&gwarea,'.')<0 || | |
007905af | 167 | getword(n2,sizeof(n2),&gwarea,'.')<0 || getword(n1,sizeof(n1),&gwarea,0)<0) { |
9bd92830 FM |
168 | printf("SARG: Maybe you have a broken record or garbage in your %s ip address.\n",gwarea.beginning); |
169 | exit(EXIT_FAILURE); | |
170 | } | |
4afbb7a5 FM |
171 | snprintf(name,name_size,"%s.%s.%s.%s",n1,n2,n3,n4); |
172 | #endif | |
25697a35 | 173 | |
9bd92830 | 174 | return; |
9c7c6346 | 175 | } |