diff options
Diffstat (limited to 'src/nm-policy-hostname.c')
-rw-r--r-- | src/nm-policy-hostname.c | 264 |
1 files changed, 0 insertions, 264 deletions
diff --git a/src/nm-policy-hostname.c b/src/nm-policy-hostname.c deleted file mode 100644 index 0ea161585..000000000 --- a/src/nm-policy-hostname.c +++ /dev/null @@ -1,264 +0,0 @@ -/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */ -/* NetworkManager -- Network link manager - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - * - * Copyright (C) 2004 - 2012 Red Hat, Inc. - * Copyright (C) 2007 - 2008 Novell, Inc. - */ - -#include <string.h> -#include <unistd.h> -#include <errno.h> -#include <netdb.h> -#include <arpa/inet.h> - -#include <glib.h> - -#include "nm-logging.h" -#include "nm-policy-hostname.h" - -/************************************************************************/ - -struct HostnameThread { - GThread *thread; - -#if GLIB_CHECK_VERSION (2,31,0) - GMutex lock; -#else - GMutex *lock; -#endif - gboolean dead; - int ret; - - struct sockaddr_in addr4; - struct sockaddr_in6 addr6; - struct sockaddr *addr; - size_t addr_size; - char hostname[NI_MAXHOST + 1]; - - HostnameThreadCallback callback; - gpointer user_data; -}; - -/* - * GMutex API has changed: - * http://developer.gnome.org/glib/2.31/glib-Threads.html#GMutex - * http://developer.gnome.org/glib/2.31/glib-Deprecated-Thread-APIs.html -*/ -#if GLIB_CHECK_VERSION (2,31,0) -#define X_MUTEX_LOCK(mutex) g_mutex_lock (&(mutex)) -#define X_MUTEX_UNLOCK(mutex) g_mutex_unlock (&(mutex)) -#define X_MUTEX_INIT(mutex) g_mutex_init (&(mutex)) -#define X_MUTEX_CLEAR(mutex) g_mutex_clear (&(mutex)) -#define X_THREAD_CREATE(func,data) g_thread_try_new ("hostname-thread", func, data, NULL); -#else -#define X_MUTEX_LOCK(mutex) g_mutex_lock (mutex) -#define X_MUTEX_UNLOCK(mutex) g_mutex_unlock (mutex) -#define X_MUTEX_INIT(mutex) mutex = g_mutex_new () -#define X_MUTEX_CLEAR(mutex) g_mutex_free (mutex) -#define X_THREAD_CREATE(func,data) g_thread_create (func, data, FALSE, NULL); -#endif - -static gboolean -hostname_thread_run_cb (gpointer user_data) -{ - HostnameThread *ht = (HostnameThread *) user_data; - const char *hostname = NULL; - - if (strlen (ht->hostname) && strcmp (ht->hostname, ".")) - hostname = ht->hostname; - - nm_log_dbg (LOGD_DNS, "(%p) calling address reverse-lookup result handler", ht); - (*ht->callback) (ht, ht->ret, hostname, ht->user_data); - return FALSE; -} - -static gpointer -hostname_thread_worker (gpointer data) -{ - HostnameThread *ht = (HostnameThread *) data; - int i; - - nm_log_dbg (LOGD_DNS, "(%p) starting address reverse-lookup", ht); - - X_MUTEX_LOCK (ht->lock); - if (ht->dead) { - X_MUTEX_UNLOCK (ht->lock); - return (gpointer) NULL; - } - X_MUTEX_UNLOCK (ht->lock); - - ht->ret = getnameinfo (ht->addr, ht->addr_size, ht->hostname, NI_MAXHOST, NULL, 0, NI_NAMEREQD); - if (ht->ret == 0) { - nm_log_dbg (LOGD_DNS, "(%p) address reverse-lookup returned hostname '%s'", - ht, ht->hostname); - for (i = 0; i < strlen (ht->hostname); i++) - ht->hostname[i] = g_ascii_tolower (ht->hostname[i]); - } else { - nm_log_dbg (LOGD_DNS, "(%p) address reverse-lookup failed: (%d) %s", - ht, ht->ret, gai_strerror (ht->ret)); - } - - /* Don't track the idle handler ID because by the time the g_idle_add() - * returns the ID, the handler may already have run and freed the - * HostnameThread. - */ - nm_log_dbg (LOGD_DNS, "(%p) scheduling address reverse-lookup result handler", ht); - g_idle_add (hostname_thread_run_cb, ht); - return (gpointer) TRUE; -} - -void -hostname_thread_free (HostnameThread *ht) -{ - g_return_if_fail (ht != NULL); - - nm_log_dbg (LOGD_DNS, "(%p) freeing reverse-lookup thread", ht); - - X_MUTEX_CLEAR (ht->lock); - memset (ht, 0, sizeof (HostnameThread)); - g_free (ht); -} - -HostnameThread * -hostname4_thread_new (guint32 ip4_addr, - HostnameThreadCallback callback, - gpointer user_data) -{ - HostnameThread *ht; - char buf[INET_ADDRSTRLEN + 1]; - - ht = g_malloc0 (sizeof (HostnameThread)); - g_assert (ht); - - X_MUTEX_INIT (ht->lock); - ht->callback = callback; - ht->user_data = user_data; - - ht->addr4.sin_family = AF_INET; - ht->addr4.sin_addr.s_addr = ip4_addr; - ht->addr = (struct sockaddr *) &ht->addr4; - ht->addr_size = sizeof (ht->addr4); - - ht->thread = X_THREAD_CREATE (hostname_thread_worker, ht); - if (!ht->thread) { - hostname_thread_free (ht); - return NULL; - } - - if (!inet_ntop (AF_INET, &ht->addr4.sin_addr, buf, sizeof (buf))) - strcpy (buf, "(unknown)"); - - nm_log_dbg (LOGD_DNS, "(%p) started IPv4 reverse-lookup thread for address '%s'", - ht, buf); - - return ht; -} - -HostnameThread * -hostname6_thread_new (const struct in6_addr *ip6_addr, - HostnameThreadCallback callback, - gpointer user_data) -{ - HostnameThread *ht; - char buf[INET6_ADDRSTRLEN + 1]; - - ht = g_malloc0 (sizeof (HostnameThread)); - g_assert (ht); - - X_MUTEX_INIT (ht->lock); - ht->callback = callback; - ht->user_data = user_data; - - ht->addr6.sin6_family = AF_INET6; - ht->addr6.sin6_addr = *ip6_addr; - ht->addr = (struct sockaddr *) &ht->addr6; - ht->addr_size = sizeof (ht->addr6); - - ht->thread = X_THREAD_CREATE (hostname_thread_worker, ht); - if (!ht->thread) { - hostname_thread_free (ht); - return NULL; - } - - if (!inet_ntop (AF_INET, ip6_addr, buf, sizeof (buf))) - strcpy (buf, "(unknown)"); - - nm_log_dbg (LOGD_DNS, "(%p) started IPv6 reverse-lookup thread for address '%s'", - ht, buf); - - return ht; -} - -void -hostname_thread_kill (HostnameThread *ht) -{ - g_return_if_fail (ht != NULL); - - nm_log_dbg (LOGD_DNS, "(%p) stopping reverse-lookup thread", ht); - - X_MUTEX_LOCK (ht->lock); - ht->dead = TRUE; - X_MUTEX_UNLOCK (ht->lock); -} - -gboolean -hostname_thread_is_dead (HostnameThread *ht) -{ - g_return_val_if_fail (ht != NULL, TRUE); - - return ht->dead; -} - -/************************************************************************/ - -#define FALLBACK_HOSTNAME4 "localhost.localdomain" - -gboolean -nm_policy_set_system_hostname (const char *new_hostname, const char *msg) -{ - char old_hostname[HOST_NAME_MAX + 1]; - const char *name; - int ret; - - if (new_hostname) - g_warn_if_fail (strlen (new_hostname)); - - old_hostname[HOST_NAME_MAX] = '\0'; - errno = 0; - ret = gethostname (old_hostname, HOST_NAME_MAX); - if (ret != 0) { - nm_log_warn (LOGD_DNS, "couldn't get the system hostname: (%d) %s", - errno, strerror (errno)); - } else { - /* Don't set the hostname if it isn't actually changing */ - if ( (new_hostname && !strcmp (old_hostname, new_hostname)) - || (!new_hostname && !strcmp (old_hostname, FALLBACK_HOSTNAME4))) - return FALSE; - } - - name = (new_hostname && strlen (new_hostname)) ? new_hostname : FALLBACK_HOSTNAME4; - - nm_log_info (LOGD_DNS, "Setting system hostname to '%s' (%s)", name, msg); - ret = sethostname (name, strlen (name)); - if (ret != 0) { - nm_log_warn (LOGD_DNS, "couldn't set the system hostname to '%s': (%d) %s", - name, errno, strerror (errno)); - } - - return (ret == 0); -} - |