| 1 | /* |
| 2 | * This file is part of DisOrder |
| 3 | * Copyright (C) 2007 Richard Kettlewell |
| 4 | * |
| 5 | * This program is free software: you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation, either version 3 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | */ |
| 18 | /** @file lib/hostname.c |
| 19 | * @brief Get the local hostname |
| 20 | */ |
| 21 | |
| 22 | #include "common.h" |
| 23 | |
| 24 | #include <sys/utsname.h> |
| 25 | #include <errno.h> |
| 26 | #include <netdb.h> |
| 27 | |
| 28 | #include "mem.h" |
| 29 | #include "hostname.h" |
| 30 | #include "log.h" |
| 31 | |
| 32 | static const char *hostname; |
| 33 | |
| 34 | /** @brief Return the local hostname |
| 35 | * @return Hostname |
| 36 | */ |
| 37 | const char *local_hostname(void) { |
| 38 | if(!hostname) { |
| 39 | struct utsname u; |
| 40 | struct hostent *he; |
| 41 | |
| 42 | if(uname(&u) < 0) |
| 43 | disorder_fatal(errno, "error calling uname"); |
| 44 | if(!(he = gethostbyname(u.nodename))) |
| 45 | disorder_fatal(0, "cannot resolve '%s'", u.nodename); |
| 46 | hostname = xstrdup(he->h_name); |
| 47 | } |
| 48 | return hostname; |
| 49 | } |
| 50 | |
| 51 | |
| 52 | /* |
| 53 | Local Variables: |
| 54 | c-basic-offset:2 |
| 55 | comment-column:40 |
| 56 | fill-column:79 |
| 57 | indent-tabs-mode:nil |
| 58 | End: |
| 59 | */ |