LXR busybox/networking/whois.c

   1/* vi: set sw=4 ts=4: */
   2/*
   3 * whois - tiny client for the whois directory service
   4 *
   5 * Copyright (c) 2011 Pere Orga <gotrunks@gmail.com>
   6 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
   7 */
   8/* TODO
   9 * Add ipv6 support
  10 * Add proxy support
  11 */
  12
  13//config:config WHOIS
  14//config:       bool "whois"
  15//config:       default y
  16//config:       help
  17//config:         whois is a client for the whois directory service
  18
  19//applet:IF_WHOIS(APPLET(whois, BB_DIR_USR_BIN, BB_SUID_DROP))
  20
  21//kbuild:lib-$(CONFIG_WHOIS) += whois.o
  22
  23//usage:#define whois_trivial_usage
  24//usage:       "[-h SERVER] [-p PORT] NAME..."
  25//usage:#define whois_full_usage "\n\n"
  26//usage:       "Query WHOIS info about NAME\n"
  27//usage:     "\n        -h,-p   Server to query"
  28
  29#include "libbb.h"
  30
  31static void pipe_out(int fd)
  32{
  33        FILE *fp;
  34        char buf[1024];
  35
  36        fp = xfdopen_for_read(fd);
  37        while (fgets(buf, sizeof(buf), fp)) {
  38                char *p = strpbrk(buf, "\r\n");
  39                if (p)
  40                        *p = '\0';
  41                puts(buf);
  42        }
  43
  44        fclose(fp); /* closes fd too */
  45}
  46
  47int whois_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
  48int whois_main(int argc UNUSED_PARAM, char **argv)
  49{
  50        int port = 43;
  51        const char *host = "whois-servers.net";
  52
  53        opt_complementary = "-1:p+";
  54        getopt32(argv, "h:p:", &host, &port);
  55
  56        argv += optind;
  57        do {
  58                int fd = create_and_connect_stream_or_die(host, port);
  59                fdprintf(fd, "%s\r\n", *argv);
  60                pipe_out(fd);
  61        }
  62        while (*++argv);
  63
  64        return EXIT_SUCCESS;
  65}
  66