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NetBSD/usr.bin/whois/whois.c

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/* $NetBSD: whois.c,v 1.18 2002/06/13 23:26:43 wiz Exp $ */
/*
* RIPE version marten@ripe.net
* many changes & networkupdate by david@ripe.net
* cosmetics by steven@dante.org.uk -- gcc stopped complaining mostly,
* code is still messy, though.
*
* 1.15 94/09/07
*
* 1.2 9705/02
* "-v" option added; ambrose@ripe.net
* "whois.ripe.net" replaced by "bsdbase.ripe.net"; ambrose@ripe.net
* "bsdbase.ripe.net" replaced by "joshua.ripe.net"; marek@ripe.net
* "joshua.ripe.net" replaced by "whois.ripe.net"; roman@ripe.net 981105
*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\
The Regents of the University of California. All rights reserved.\n");
#endif /* not lint */
#ifndef RIPE
#ifndef lint
#if 0
static char sccsid[] = "@(#)whois.c 8.1 (Berkeley) 6/6/93";
#else
__RCSID("$NetBSD: whois.c,v 1.18 2002/06/13 23:26:43 wiz Exp $");
#endif
#endif /* not lint */
#endif /* not RIPE */
#ifdef RIPE
#ifndef lint
char sccsid[] =
"@(#)whois.c 5.11 (Berkeley) 3/2/91 - RIPE 1.15 94/09/07 marten@ripe.net";
#endif /* not lint */
#endif /* RIPE */
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/param.h>
#include <netinet/in.h>
#include <err.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <pwd.h>
#include <signal.h>
#define index(s,c) strchr((const char*)(s),(int)(c))
#define rindex(s,c) strrchr((const char*)(s),(int)(c))
#define bzero(s,n) memset((void*)s,0,(size_t)n)
#ifdef HASMEMMOVE
# define bcopy(s,d,n) memmove((void*)(d),(void*)(s),(size_t)(n))
#else
# define bcopy(s,d,n) memcpy((void*)(d),(void*)(s),(size_t)(n))
#endif /* HASMEMMOVE */
/*
# the following defines can be used but are not fully functional anymore...
#
# CLEVER- Use a educated guess of the whereabouts of the nearest server
# This is done by taking the top-level domain of the current
# machine, and looking for a CNAME record for a server with name
# <top-level-domain>-whois.ripe.net
# If this machine does not exsist or the current machine's top-level
# domain could not be found,it will fall back to whois.ripe.net
# the default for this RIPE version of whois
# The CLEVER option implies the RIPE option.
# TOPDOMAIN=\"<top-level-domain>\"
# - This option will fix the default host to be
# <top-level-domain>-whois.ripe.net, which may point to a secondary
# server inside your top-level domain. If there is no such secondary
# server, it will point to whois.ripe.net, the default. This option
# overrules the CLEVER option.
# The TOPDOMAIN option implies the RIPE option.
*/
#if defined(TOPDOMAIN) || defined(CLEVER)
#ifndef RIPE
#define RIPE
#endif /* !RIPE */
#endif /* TOPDOMAIN || CLEVER */
#define NICHOST "whois.internic.net"
int main(int, char **);
static void usage(void);
static void closesocket(int, int);
static void termhandler(int);
void
usage(void)
{
#ifdef RIPE
#ifdef NETWORKUPDATE
(void)fprintf(stderr, "\nUsage: networkupdate [-46] [-h hostname] [-p port]");
#else
(void)fprintf(stderr, "\nUsage: whois [-46aFLmMrSvR] [-h hostname] [-s sources] [-T types] [-i attr] keys\n");
(void)fprintf(stderr, " whois -t type");
(void)fprintf(stderr, " whois -v type");
#endif
#else
(void)fprintf(stderr, "\nUsage: whois [-46] [-h hostname] [-p port] name ...");
#endif
(void)fprintf(stderr, "\n\nWhere:\n\n");
(void)fprintf(stderr, "-4 Use IPv4 Only\n");
(void)fprintf(stderr, "-6 Use IPv6 Only\n");
#ifdef RIPE
#ifndef NETWORKUPDATE
(void)fprintf(stderr, "-a search all databases\n");
(void)fprintf(stderr, "-F fast raw output\n");
#endif
#endif
(void)fprintf(stderr, "-h hostname search alternate server\n");
#ifdef RIPE
#ifndef NETWORKUPDATE
(void)fprintf(stderr, "-i [attr][[,attr] ... ] do an inverse lookup for specified attributes\n");
(void)fprintf(stderr, "-L find all Less specific matches\n");
(void)fprintf(stderr, "-m find first level more specific matches\n");
(void)fprintf(stderr, "-M find all More specific matches\n");
#endif
#endif
(void)fprintf(stderr, "-p port port to connect to\n");
#ifdef RIPE
#ifndef NETWORKUPDATE
(void)fprintf(stderr, "-r turn off recursive lookups\n");
(void)fprintf(stderr, "-s source[[,source] ... ] search databases with source 'source'\n");
(void)fprintf(stderr, "-S tell server to leave out 'syntactic sugar'\n");
(void)fprintf(stderr, "-t type requests template for object of type 'type'\n");
(void)fprintf(stderr, "-v type requests verbose template for object of type 'type'\n");
(void)fprintf(stderr, "-R force to show local copy of the domain object even if it contains referral\n");
(void)fprintf(stderr, "-T type[[,type] ... ] only look for objects of type 'type'\n\n");
(void)fprintf(stderr, "Please note that most of these flags are NOT understood by\n");
(void)fprintf(stderr, "non RIPE whois servers\n");
#endif
#endif
(void)fprintf(stderr, "\n");
exit(1);
}
int s;
void
closesocket(int s, int child)
{
/* printf("close connection child=%i\n", child); */
close(s);
#ifdef NETWORKUPDATE
if (child==0) {
kill(getppid(), SIGTERM);
}
#endif
exit(0);
}
void
termhandler(int sig)
{
closesocket(s,1);
}
#ifdef RIPE
#define occurs(str,pat) ((int) strstr((str),(pat)))
#endif
int
main(int argc, char *argv[])
{
extern char *optarg;
extern int optind;
FILE *sfi;
FILE *sfo;
int ch;
struct addrinfo *dst, hints;
int af=PF_UNSPEC;
int error;
char *host, *whoishost;
int optp=0;
char *optport="whois";
#ifdef DEBUG
int verb=1;
#else /*DEBUG */
int verb=0;
#endif
#ifdef RIPE
int opthost=0;
#ifndef NETWORKUPDATE
/* normal whois client */
char *string;
int alldatabases=0;
int optsource=0, optrecur=0, optfast=0, opttempl=0, optverbose=0;
int optobjtype=0, optsugar=0, optinverselookup=0, optgetupdates=0;
int optL=0, optm=0, optM=0, optchanged=0, optnonreferral=0;
char *source=NULL, *templ=NULL, *verbose=NULL, *objtype=NULL,
*inverselookup=NULL, *getupdates=NULL;
#else /* NETWORKUPDATE */
/* networkupdate client */
int prev;
char domainname[64]; /* that's what sys/param.h says */
struct passwd *passwdentry;
int child;
#endif
#ifdef CLEVER
int myerror;
char *mytoplevel;
char *myhost;
#endif
#endif
#ifdef TOPDOMAIN
char topdomain[] = TOPDOMAIN "-whois.ripe.net";
host = topdomain;
#else
host = NICHOST;
#endif
#ifdef RIPE
#ifdef NETWORKUPDATE
while ((ch = getopt(argc, argv, "46h:p:")) != -1)
#else
while ((ch = getopt(argc, argv, "46acFg:h:i:LmMp:rs:SRt:T:v:")) != -1)
#endif
#else
while ((ch = getopt(argc, argv, "46h:p:")) != -1)
#endif
switch((char)ch) {
case '4':
af = PF_INET;
break;
case '6':
af = PF_INET6;
break;
case 'h':
host = optarg;
opthost = 1;
break;
case 'p':
optport=optarg;
optp =1;
break;
#ifdef RIPE
#ifndef NETWORKUPDATE
case 'a':
alldatabases=1;
break;
case 'c':
optchanged=1;
break;
case 'F':
optfast = 1;
break;
case 'g':
getupdates=optarg;
optgetupdates=1;
break;
case 'i':
inverselookup=optarg;
optinverselookup = 1;
break;
case 'L':
if (optM || optm) {
fprintf(stderr, "Only one of -L, -m or -M allowed\n\n");
usage();
}
optL=1;
break;
case 'm':
if (optM || optL) {
fprintf(stderr, "Only one of -L, -m or -M allowed\n\n");
usage();
}
optm=1;
break;
case 'M':
if (optL || optm) {
fprintf(stderr, "Only one of -L, -m or -M allowed\n\n");
usage();
}
optM=1;
break;
case 's':
source = optarg;
optsource=1;
break;
case 'S':
optsugar=1;
break;
case 'R':
optnonreferral=1;
break;
case 'r':
optrecur=1;
break;
case 't':
templ=optarg;
opttempl=1;
break;
case 'v':
verbose=optarg;
optverbose=1;
break;
case 'T':
objtype=optarg;
optobjtype=1;
break;
#endif
#endif
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
#ifdef RIPE
#ifdef NETWORKUPDATE
if (argc>0)
usage();
#else
if ((argc<=0) && !opttempl && !optverbose && !optgetupdates && (!(opttempl && optgetupdates)))
usage();
#endif
#else
if (argc<=0)
usage();
#endif
if (!opthost) {
#ifdef CLEVER
whoishost=(char *)calloc(MAXHOSTNAMELEN, sizeof(char));
myhost =(char *)calloc(MAXHOSTNAMELEN, sizeof(char));
myerror = gethostname(myhost, MAXHOSTNAMELEN);
if (myerror >= 0) {
if (occurs(myhost, ".")) {
mytoplevel = rindex(myhost,'.');
mytoplevel++;
(void) sprintf(whoishost, "%s-whois.ripe.net", mytoplevel);
if (verb) fprintf(stderr, "Clever guess: %s\n", whoishost);
}
}
memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_CANONNAME;
hints.ai_family = af;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = 0;
error = getaddrinfo(host, optport, &hints, &dst);
if ((error) && (verb))
fprintf(stderr,"No such host: %s\n", whoishost);
if (error) {
#endif
whoishost=NICHOST;
if (verb)
fprintf(stderr, "Default host: %s\n\n", whoishost);
memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_CANONNAME;
hints.ai_family = af;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = 0;
error = getaddrinfo(host, optport , &hints, &dst);
if (error) {
fprintf(stderr,"No such host: %s\n", whoishost);
if (verb) fprintf(stderr, "Now I give up ...\n");
perror("Unknown host");
exit(1);
}
#ifdef CLEVER
}
#endif
}
else {
if (verb)
fprintf(stderr, "Trying: %s\n\n", host);
memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_CANONNAME;
hints.ai_family = af;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = 0;
error = getaddrinfo(host, optport, &hints, &dst);
if (error) {
(void)fprintf(stderr, "whois: %s: ", host);
perror("Unknown host");
exit(1);
}
}
for (/*nothing*/; dst; dst = dst->ai_next) {
s = socket(dst->ai_family, dst->ai_socktype, dst->ai_protocol);
if (s < 0)
continue;
if (connect(s, dst->ai_addr, dst->ai_addrlen) < 0) {
close(s);
if (verb) (void)fprintf(stderr, "whois: connect miss\n");
continue;
}
/*okay*/
break;
}
if (dst == NULL) {
perror("whois: connect");
exit(1);
}
if (verb) (void)fprintf(stderr, "whois: connect success\n");
#ifndef NETWORKUPDATE
sfi = fdopen(s, "r");
sfo = fdopen(s, "w");
if (sfi == NULL || sfo == NULL) {
perror("whois: fdopen");
(void)close(s);
exit(1);
}
#endif
signal(SIGTERM, termhandler);
#ifdef RIPE
#ifdef NETWORKUPDATE
if ((child=fork())==0) {
sfo = fdopen(s, "w");
if (sfo == NULL) {
perror("whois: fdopen");
(void)close(s);
exit(1);
}
if (gethostname(domainname, sizeof(domainname))) {
fprintf(stderr, "error when doing gethostname()");
exit(1);
}
passwdentry=getpwuid(getuid());
fprintf(sfo, "-Vnc2.0 -U %s %s\n", passwdentry->pw_name, domainname);
fflush(sfo);
prev='\0';
while ((ch=getchar()) != EOF) {
fputc(ch, sfo);
if (ch=='\n') fflush(sfo);
if (feof(sfo)) closesocket(s, child);
if ((ch=='.') && (prev=='\n')) closesocket(s, child);
if (!isspace(ch) || ((!isspace(prev)) && (ch=='\n'))) prev=ch;
}
closesocket(s, child);
}
sfi = fdopen(s, "r");
if (sfi == NULL) {
perror("whois: fdopen");
(void)close(s);
exit(1);
}
#else
if (alldatabases)
(void)fprintf(sfo, "-a ");
if (optchanged)
(void)fprintf(sfo, "-c ");
if (optfast)
(void)fprintf(sfo, "-F ");
if (optgetupdates)
(void)fprintf(sfo, "-g %s ", getupdates);
if (optinverselookup)
(void)fprintf(sfo, "-i %s ", inverselookup);
if (optL)
(void)fprintf(sfo, "-L ");
if (optm)
(void)fprintf(sfo, "-m ");
if (optM)
(void)fprintf(sfo, "-M ");
if (optrecur)
(void)fprintf(sfo, "-r ");
if (optsource)
(void)fprintf(sfo, "-s %s ", source);
if (optsugar)
(void)fprintf(sfo, "-S ");
if (optnonreferral)
(void)fprintf(sfo, "-R ");
if (opttempl)
(void)fprintf(sfo, "-t %s ", templ);
if (optverbose)
(void)fprintf(sfo, "-v %s ", verbose);
if (optobjtype)
(void)fprintf(sfo, "-T %s ", objtype);
/* we can only send the -V when we are sure that we are dealing with
a RIPE whois server :-( */
whoishost=(char *)calloc(strlen(host)+1, sizeof(char));
strcpy(whoishost, host);
for (string=whoishost;(*string=(char)tolower(*string));string++);
if (strstr(whoishost, "ripe.net") ||
strstr(whoishost, "ra.net") ||
strstr(whoishost, "apnic.net") ||
strstr(whoishost, "mci.net") ||
strstr(whoishost, "isi.edu") ||
strstr(whoishost, "garr.it") ||
strstr(whoishost, "ans.net") ||
alldatabases || optfast || optgetupdates || optinverselookup ||
optL || optm || optM || optrecur || optsugar || optsource ||
opttempl || optverbose || optobjtype)
(void)fprintf(sfo, "-VwC2.0 ");
#endif
#endif
#ifndef NETWORKUPDATE
while (argc-- > 1)
(void)fprintf(sfo, "%s ", *argv++);
if (*argv) (void)fputs(*argv, sfo);
(void)fputs("\r\n", sfo);
(void)fflush(sfo);
#endif
while ((ch = getc(sfi)) != EOF)
putchar(ch);
closesocket(s, 1);
exit(0);
}
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