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Diffstat (limited to 'extra/resolveip.c')
| -rw-r--r-- | extra/resolveip.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/extra/resolveip.c b/extra/resolveip.c new file mode 100644 index 00000000000..d739f8de244 --- /dev/null +++ b/extra/resolveip.c @@ -0,0 +1,204 @@ +/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, + MA 02111-1307, USA */ + +/* Resolves IP's to hostname and hostnames to IP's */ + +#define RESOLVE_VERSION "2.0" + +#include <global.h> +#include <sys/types.h> +#include <sys/socket.h> +#ifndef HAVE_BROKEN_NETINET_INCLUDES +#include <netinet/in.h> +#endif +#include <arpa/inet.h> +#include <netdb.h> +#include <m_ctype.h> +#include <my_sys.h> +#include <getopt.h> + +#if !defined(_AIX) && !defined(HAVE_UNIXWARE7_THREADS) && !defined(HAVE_UNIXWARE7_POSIX) && !defined(h_errno) +extern int h_errno; +#endif + +static int silent=0; + +static struct option long_options[] = +{ + {"help", no_argument, 0, '?'}, + {"info", no_argument, 0, 'I'}, + {"silent", no_argument, 0, 's'}, + {"version", no_argument, 0, 'V'}, + {0, 0, 0, 0} +}; + + +static void print_version(void) +{ + printf("%s Ver %s, for %s (%s)\n",my_progname,RESOLVE_VERSION, + SYSTEM_TYPE,MACHINE_TYPE); +} + + +static void usage(void) +{ + print_version(); + puts("This software comes with ABSOLUTELY NO WARRANTY. This is free software,\nand you are welcome to modify and redistribute it under the GPL license\n"); + puts("Get hostname based on IP-address or IP-address based on hostname.\n"); + printf("Usage: %s [OPTIONS] hostname or IP-address\n",my_progname); + printf("\n\ + -?, --help Displays this help and exits.\n\ + -I, --info Synonym for the above.\n\ + -s, --silent Be more silent.\n\ + -V, --version Displays version information and exits.\n"); +} + +/*static my_string load_default_groups[]= { "resolveip","client",0 }; */ + +static int get_options(int *argc,char ***argv) +{ + int c,option_index; + + /* load_defaults("my",load_default_groups,argc,argv); */ + while ((c=getopt_long(*argc,*argv,"?IsV", + long_options, &option_index)) != EOF) + { + switch (c) { + case 's': + silent=1; + break; + case 'V': print_version(); exit(0); + case 'I': + case '?': + usage(); + exit(0); + default: + fprintf(stderr,"%s: Illegal option character '%c'\n", + my_progname,opterr); + return(1); + break; + } + } + (*argc)-=optind; + (*argv)+=optind; + if (*argc == 0) + { + usage(); + return 1; + } + return 0; +} /* get_options */ + + + +int main(int argc, char **argv) +{ + struct hostent *hpaddr; + u_long taddr; + char *ip,**q; + int error=0; + + MY_INIT(argv[0]); + + if (get_options(&argc,&argv)) + exit(1); + + while (argc--) + { + ip = *argv++; + + if (isdigit(ip[0])) + { + taddr = inet_addr(ip); + if (taddr == htonl(INADDR_BROADCAST)) + { + puts("Broadcast"); + continue; + } + if (taddr == htonl(INADDR_ANY)) + { + if (!taddr) + puts("Null-IP-Addr"); + else + puts("Old-Bcast"); + continue; + } + + hpaddr = gethostbyaddr((char*) &(taddr), sizeof(struct in_addr),AF_INET); + if (hpaddr) + { + if (silent) + puts(hpaddr->h_name); + else + { + printf ("Host name of %s is %s", ip,hpaddr->h_name); + for (q = hpaddr->h_aliases; *q != 0; q++) + (void) printf(", %s", *q); + puts(""); + } + } + else + { + error=2; + fprintf(stderr,"%s: Unable to find hostname for '%s'\n",my_progname, + ip); + } + } + else + { + hpaddr = gethostbyname(ip); + if (!hpaddr) + { + const char *err; + fprintf(stderr,"%s: Unable to find hostid for '%s'",my_progname,ip); + switch (h_errno) { + case HOST_NOT_FOUND: err="host not found"; break; + case TRY_AGAIN: err="try again"; break; + case NO_RECOVERY: err="no recovery"; break; + case NO_DATA: err="no_data"; break; + default: err=0; + } + if (err) + fprintf(stderr,": %s\n",err); + else + fprintf(stderr,"\n"); + error=2; + } + else if (silent) + { + struct in_addr in; + memcpy((char*) &in.s_addr, (char*) *hpaddr->h_addr_list, + sizeof (in.s_addr)); + puts(inet_ntoa(in)); + } + else + { + char **p; + for (p = hpaddr->h_addr_list; *p != 0; p++) + { + struct in_addr in; + memcpy(&in.s_addr, *p, sizeof (in.s_addr)); + printf ("IP address of %s is %s\n",ip,inet_ntoa(in)); + } + } + } + } + exit(error); +} + + + |