/* $OpenBSD: whois.c,v 1.11 2000/07/12 18:01:57 itojun Exp $ */ /* * Copyright (c) 1980, 1993 * The 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. */ #ifndef lint static char copyright[] = "@(#) Copyright (c) 1980, 1993\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)whois.c 8.1 (Berkeley) 6/6/93"; #else static char rcsid[] = "$OpenBSD: whois.c,v 1.11 2000/07/12 18:01:57 itojun Exp $"; #endif #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #define NICHOST "whois.crsnic.net" #define INICHOST "whois.internic.net" #define DNICHOST "whois.nic.mil" #define GNICHOST "whois.nic.gov" #define ANICHOST "whois.arin.net" #define RNICHOST "whois.ripe.net" #define PNICHOST "whois.apnic.net" #define RUNICHOST "whois.ripn.net" #define MNICHOST "whois.ra.net" #define QNICHOST_TAIL ".whois-servers.net" #define WHOIS_PORT 43 #define WHOIS_RECURSE 0x01 #define WHOIS_INIC_FALLBACK 0x02 #define WHOIS_QUICK 0x04 static void usage __P((void)); static void whois __P((char *, struct addrinfo *, int)); int main(argc, argv) int argc; char **argv; { int ch, i, j, error; int use_qnichost, flags; char *host; char *qnichost; struct addrinfo hints, *res; #ifdef SOCKS SOCKSinit(argv[0]); #endif host = NULL; qnichost = NULL; flags = 0; use_qnichost = 0; while ((ch = getopt(argc, argv, "adgh:impqQrR")) != -1) switch((char)ch) { case 'a': host = ANICHOST; break; case 'd': host = DNICHOST; break; case 'g': host = GNICHOST; break; case 'h': host = optarg; break; case 'i': host = INICHOST; break; case 'm': host = MNICHOST; break; case 'p': host = PNICHOST; break; case 'q': /* default */ break; case 'Q': flags |= WHOIS_QUICK; break; case 'r': host = RNICHOST; break; case 'R': host = RUNICHOST; break; case '?': default: usage(); } argc -= optind; argv += optind; if (!argc) usage(); /* * If no nic host is specified, use whois-servers.net * if there is a '.' in the name, else fall back to NICHOST. */ if (host == NULL) { use_qnichost = 1; host = NICHOST; if (!(flags & WHOIS_QUICK)) flags |= WHOIS_INIC_FALLBACK | WHOIS_RECURSE; } while (argc--) { if (use_qnichost) { if (qnichost) { free(qnichost); qnichost = NULL; } for (i = j = 0; (*argv)[i]; i++) if ((*argv)[i] == '.') j = i; if (j != 0) { qnichost = (char *) calloc(i - j + 1 + strlen(QNICHOST_TAIL), sizeof(char)); if (!qnichost) err(1, "malloc"); strcpy(qnichost, *argv + j + 1); strcat(qnichost, QNICHOST_TAIL); memset(&hints, 0, sizeof(hints)); hints.ai_flags = 0; hints.ai_family = AF_UNSPEC; hints.ai_socktype = SOCK_STREAM; error = getaddrinfo(qnichost, "whois", &hints, &res); if (error != 0) errx(EX_NOHOST, "%s: %s", qnichost, gai_strerror(error)); } } if (!qnichost) { memset(&hints, 0, sizeof(hints)); hints.ai_flags = 0; hints.ai_family = AF_UNSPEC; hints.ai_socktype = SOCK_STREAM; error = getaddrinfo(host, "whois", &hints, &res); if (error != 0) errx(EX_NOHOST, "%s: %s", host, gai_strerror(error)); } whois(*argv++, res, flags); freeaddrinfo(res); } exit(0); } static void whois(name, res, flags) char *name; struct addrinfo *res; int flags; { FILE *sfi, *sfo; char *buf, *p, *nhost; size_t len; int s, nomatch; const char *reason = NULL; s = -1; for (/*nothing*/; res; res = res->ai_next) { s = socket(res->ai_family, res->ai_socktype, res->ai_protocol); if (s < 0) { reason = "socket"; continue; } if (connect(s, res->ai_addr, res->ai_addrlen) < 0) { reason = "connect"; close(s); s = -1; continue; } break; /*okay*/ } if (s < 0) { if (reason) err(EX_OSERR, "%s", reason); else errx(EX_OSERR, "unknown error in connection attempt"); } sfi = fdopen(s, "r"); sfo = fdopen(s, "w"); if (sfi == NULL || sfo == NULL) err(EX_OSERR, "fdopen"); (void)fprintf(sfo, "%s\r\n", name); (void)fflush(sfo); nhost = NULL; nomatch = 0; while ((buf = fgetln(sfi, &len))) { if (buf[len - 2] == '\r') buf[len - 2] = '\0'; else buf[len - 1] = '\0'; if ((flags & WHOIS_RECURSE) && !nhost && (p = strstr(buf, "Whois Server: "))) { p += sizeof("Whois Server: ") - 1; if ((len = strcspn(p, " \t\n\r"))) { if ((nhost = malloc(len + 1)) == NULL) err(1, "malloc"); memcpy(nhost, p, len); nhost[len] = '\0'; } } if ((flags & WHOIS_INIC_FALLBACK) && !nhost && !nomatch && (p = strstr(buf, "No match for \""))) { p += sizeof("No match for \"") - 1; if ((len = strcspn(p, "\"")) && len == strlen(name) && strncasecmp(name, p, len) == 0) nomatch = 1; } (void)puts(buf); } /* Do second lookup as needed */ if (nomatch && !nhost) { (void)printf("Looking up %s at %s.\n\n", name, INICHOST); nhost = INICHOST; } if (nhost) { struct addrinfo hints, *res2; int error; memset(&hints, 0, sizeof(hints)); hints.ai_flags = 0; hints.ai_family = AF_UNSPEC; hints.ai_socktype = SOCK_STREAM; error = getaddrinfo(nhost, "whois", &hints, &res2); if (error != 0) { warnx("%s: %s", nhost, gai_strerror(error)); return; } if (!nomatch) free(nhost); whois(name, res2, 0); freeaddrinfo(res2); } } static void usage() { (void)fprintf(stderr, "usage: whois [-adgimpqQrR6] [-h hostname] name ...\n"); exit(EX_USAGE); }