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authorMichael Biebl <biebl@debian.org>2014-07-06 02:16:10 +0200
committerMichael Biebl <biebl@debian.org>2014-07-06 02:16:10 +0200
commit33491bc4279481db8ae47213e34a6d695a0e8830 (patch)
tree097d2b0fdff3fae6885381ae5e57a182cd8cbbba /src/nm-netlink-utils.c
parent59c3714a494c3b3765657c0551ad82842d98a7d2 (diff)
Imported Upstream version 0.9.10.0 upstream/0.9.10.0
Diffstat (limited to 'src/nm-netlink-utils.c')
-rw-r--r--src/nm-netlink-utils.c465
1 files changed, 0 insertions, 465 deletions
diff --git a/src/nm-netlink-utils.c b/src/nm-netlink-utils.c
deleted file mode 100644
index 0ec53897..00000000
--- a/src/nm-netlink-utils.c
+++ /dev/null
@@ -1,465 +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) 2011 Red Hat, Inc.
- */
-
-#include "logging/nm-logging.h"
-#include "nm-netlink-utils.h"
-#include "nm-netlink-monitor.h"
-#include "nm-netlink-compat.h"
-
-#include <arpa/inet.h>
-#include <netinet/in.h>
-#include <netlink/route/addr.h>
-
-typedef struct {
-	int ifindex;
-	int family;
-	void *addr;
-	int addrlen;
-	int prefix;
-	gboolean found;
-} FindAddrInfo;
-
-static void
-find_one_address (struct nl_object *object, void *user_data)
-{
-	FindAddrInfo *info = user_data;
-	struct rtnl_addr *addr = (struct rtnl_addr *) object;
-	struct nl_addr *local;
-	void *binaddr;
-
-	if (info->found)
-		return;
-
-	if (rtnl_addr_get_ifindex (addr) != info->ifindex)
-		return;
-	if (rtnl_addr_get_family (addr) != info->family)
-		return;
-
-	if (rtnl_addr_get_prefixlen (addr) != info->prefix)
-		return;
-
-	local = rtnl_addr_get_local (addr);
-	if (nl_addr_get_family (local) != info->family)
-		return;
-	if (nl_addr_get_len (local) != info->addrlen)
-		return;
-	binaddr = nl_addr_get_binary_addr (local);
-	if (binaddr) {
-		if (memcmp (binaddr, info->addr, info->addrlen) == 0)
-			info->found = TRUE; /* Yay, found it */
-	}
-}
-
-/**
- * nm_netlink_find_address:
- * @ifindex: interface index
- * @family: address family, either AF_INET or AF_INET6
- * @addr: binary address, either struct in_addr* or struct in6_addr*
- * @prefix: prefix length
- *
- * Searches for a matching address on the given interface.
- *
- * Returns: %TRUE if the given address was found on the interface, %FALSE if it
- * was not found or an error occurred.
- **/
-gboolean
-nm_netlink_find_address (int ifindex,
-                         int family,
-                         void *addr,  /* struct in_addr or struct in6_addr */
-                         int prefix)
-{
-	struct nl_sock *nlh = NULL;
-	struct nl_cache *cache = NULL;
-	FindAddrInfo info;
-
-	g_return_val_if_fail (ifindex > 0, FALSE);
-	g_return_val_if_fail (family == AF_INET || family == AF_INET6, FALSE);
-	g_return_val_if_fail (addr != NULL, FALSE);
-	g_return_val_if_fail (prefix >= 0, FALSE);
-
-	memset (&info, 0, sizeof (info));
-	info.ifindex = ifindex;
-	info.family = family;
-	info.prefix = prefix;
-	info.addr = addr;
-	if (family == AF_INET)
-		info.addrlen = sizeof (struct in_addr);
-	else if (family == AF_INET6)
-		info.addrlen = sizeof (struct in6_addr);
-	else
-		g_assert_not_reached ();
-
-	nlh = nm_netlink_get_default_handle ();
-	if (nlh) {
-		rtnl_addr_alloc_cache(nlh, &cache);
-		if (cache) {
-			nl_cache_mngt_provide (cache);
-			nl_cache_foreach (cache, find_one_address, &info);
-			nl_cache_free (cache);
-		}
-	}
-	return info.found;
-}
-
-struct rtnl_route *
-nm_netlink_route_new (int ifindex,
-                      int family,
-                      int mss,
-                      ...)
-{
-	va_list var_args;
-	struct rtnl_route *route;
-	NmNlProp prop = NMNL_PROP_INVALID;
-	int value;
-
-	route = rtnl_route_alloc ();
-	g_return_val_if_fail (route != NULL, NULL);
-
-	if (ifindex > 0)
-		rtnl_route_set_oif (route, ifindex);
-	if (family != AF_UNSPEC)
-		rtnl_route_set_family (route, family);
-	if (mss > 0)
-		rtnl_route_set_metric (route, RTAX_ADVMSS, mss);
-
-	va_start (var_args, mss);
-	prop = va_arg (var_args, NmNlProp);
-	while (prop != NMNL_PROP_INVALID) {
-		value = va_arg (var_args, int);
-
-		if (prop == NMNL_PROP_PROT && value != RTPROT_UNSPEC)
-			rtnl_route_set_protocol (route, value);
-		else if (prop == NMNL_PROP_TABLE && value != RT_TABLE_UNSPEC)
-			rtnl_route_set_table (route, value);
-		else if (prop == NMNL_PROP_SCOPE && value != RT_SCOPE_NOWHERE)
-			rtnl_route_set_scope (route, value);
-		else if (prop == NMNL_PROP_PRIO && value > 0)
-			rtnl_route_set_priority (route, value);
-
-		prop = va_arg (var_args, NmNlProp);
-	}
-	va_end (var_args);
-
-	return route;
-}
-
-/**
- * _route_add:
- * @route: the route to add
- * @family: address family, either %AF_INET or %AF_INET6
- * @dest: the route destination address, either a struct in_addr or a struct
- *   in6_addr depending on @family
- * @dest_prefix: the CIDR prefix of @dest
- * @gateway: the gateway through which to reach @dest, if any; given as a
- *   struct in_addr or struct in6_addr depending on @family
- * @flags: flags to pass to rtnl_route_add(), eg %NLM_F_REPLACE
- *
- * Returns: zero if succeeded or the netlink error otherwise.
- **/
-static int
-_route_add (struct rtnl_route *route,
-            int family,
-            const void *dest, /* in_addr or in6_addr */
-            int dest_prefix,
-            const void *gateway, /* in_addr or in6_addr */
-            int flags)
-{
-	struct nl_sock *sk;
-	struct nl_addr *dest_addr, *gw_addr;
-	void *tmp_addr;
-	int addrlen, err, log;
-
-	if (family == AF_INET) {
-		addrlen = sizeof (struct in_addr);
-		log = LOGD_IP4;
-	} else if (family == AF_INET6) {
-		addrlen = sizeof (struct in6_addr);
-		log = LOGD_IP6;
-	} else
-		g_assert_not_reached ();
-
-	sk = nm_netlink_get_default_handle ();
-
-	/* Build up the destination address */
-	if (dest) {
-		/* Copy to preserve const */
-		tmp_addr = g_malloc0 (addrlen);
-		memcpy (tmp_addr, dest, addrlen);
-
-		dest_addr = nl_addr_build (family, tmp_addr, addrlen);
-		g_free (tmp_addr);
-
-		g_return_val_if_fail (dest_addr != NULL, -NLE_INVAL);
-		nl_addr_set_prefixlen (dest_addr, dest_prefix);
-
-		rtnl_route_set_dst (route, dest_addr);
-		nl_addr_put (dest_addr);
-	}
-
-	/* Build up the gateway address */
-	if (gateway) {
-		tmp_addr = g_malloc0 (addrlen);
-		memcpy (tmp_addr, gateway, addrlen);
-
-		gw_addr = nl_addr_build (family, tmp_addr, addrlen);
-		g_free (tmp_addr);
-
-		if (gw_addr) {
-			nl_addr_set_prefixlen (gw_addr, 0);
-			rtnl_route_set_gateway (route, gw_addr);
-			rtnl_route_set_scope (route, RT_SCOPE_UNIVERSE);
-			nl_addr_put (gw_addr);
-		} else
-			nm_log_err (LOGD_DEVICE | log, "Invalid gateway");
-	}
-
-	err = rtnl_route_add (sk, route, flags);
-
-	/* LIBNL Bug: Aliased ESRCH */
-	if (err == -NLE_FAILURE)
-		err = -NLE_OBJ_NOTFOUND;
-
-	return err;
-}
-
-/**
- * nm_netlink_route4_add:
- * @route: the route to add
- * @dest: the route destination address in network byte order
- * @dest_prefix: the CIDR prefix of @dest
- * @gateway: the gateway through which to reach @dest, if any, in network byte order
- * @flags: flags to pass to rtnl_route_add(), eg %NLM_F_REPLACE
- *
- * Adds an IPv4 route with the given parameters.
- *
- * Returns: zero if succeeded or the netlink error otherwise.
- **/
-int
-nm_netlink_route4_add (struct rtnl_route *route,
-                       guint32 *dst,
-                       int prefix,
-                       guint32 *gw,
-                       int flags)
-{
-	return _route_add (route, AF_INET, dst, prefix, gw, flags);
-}
-
-/**
- * nm_netlink_route6_add:
- * @route: the route to add
- * @dest: the route destination address
- * @dest_prefix: the CIDR prefix of @dest
- * @gateway: the gateway through which to reach @dest, if any
- * @flags: flags to pass to rtnl_route_add(), eg %NLM_F_REPLACE
- *
- * Adds an IPv6 route with the given parameters.
- *
- * Returns: zero if succeeded or the netlink error otherwise.
- **/
-int
-nm_netlink_route6_add (struct rtnl_route *route,
-                       const struct in6_addr *dst,
-                       int prefix,
-                       const struct in6_addr *gw,
-                       int flags)
-{
-	return _route_add (route, AF_INET6, dst, prefix, gw, flags);
-}
-
-/**
- * nm_netlink_route_delete:
- * @route: the route to delete
- *
- * Returns: %TRUE if the request was successful, %FALSE if it failed
- **/
-gboolean
-nm_netlink_route_delete (struct rtnl_route *route)
-{
-	struct nl_sock *nlh;
-	int err = 0;
-
-	g_return_val_if_fail (route != NULL, FALSE);
-
-	nlh = nm_netlink_get_default_handle ();
-	err = rtnl_route_delete (nlh, route, 0);
-
-	if (err)
-		nm_log_dbg (LOGD_IP4 | LOGD_IP6, "%s (%d)", nl_geterror(err), err);
-
-	/* Workaround libnl BUG: ESRCH is aliased to generic NLE_FAILURE
-	 * See: http://git.kernel.org/?p=libs/netlink/libnl.git;a=commit;h=7e9d5f */
-	if (err == -NLE_FAILURE)
-		err = -NLE_OBJ_NOTFOUND;
-
-	return (err && (err != -NLE_OBJ_NOTFOUND) && (err != -NLE_RANGE) ) ? FALSE : TRUE;
-}
-
-
-static void
-dump_route (struct rtnl_route *route)
-{
-	char buf6[INET6_ADDRSTRLEN];
-	char buf4[INET_ADDRSTRLEN];
-	struct nl_addr *nl;
-	struct in6_addr *addr6 = NULL;
-	struct in_addr *addr4 = NULL;
-	int prefixlen = 0;
-	const char *sf = "UNSPEC";
-	int family = rtnl_route_get_family (route);
-	guint32 log_level = LOGD_IP4 | LOGD_IP6;
-
-	memset (buf6, 0, sizeof (buf6));
-	memset (buf4, 0, sizeof (buf4));
-	nl = rtnl_route_get_dst (route);
-	if (nl) {
-		if (nl_addr_get_family (nl) == AF_INET) {
-			addr4 = nl_addr_get_binary_addr (nl);
-			if (addr4)
-				inet_ntop (AF_INET, addr4, &buf4[0], sizeof (buf4));
-		} else if (nl_addr_get_family (nl) == AF_INET6) {
-			addr6 = nl_addr_get_binary_addr (nl);
-			if (addr6)
-				inet_ntop (AF_INET6, addr6, &buf6[0], sizeof (buf6));
-		}
-		prefixlen = nl_addr_get_prefixlen (nl);
-	}
-
-	if (family == AF_INET) {
-		sf = "INET";
-		log_level = LOGD_IP4;
-	} else if (family == AF_INET6) {
-		sf = "INET6";
-		log_level = LOGD_IP6;
-	}
-
-	nm_log_dbg (log_level, "  route idx %d family %s (%d) addr %s/%d",
-	            rtnl_route_get_oif (route),
-	            sf, family,
-	            strlen (buf4) ? buf4 : (strlen (buf6) ? buf6 : "<unknown>"),
-	            prefixlen);
-}
-
-
-typedef struct {
-	int ifindex;
-	int family;
-	int scope;
-	gboolean ignore_inet6_ll_mc;
-	char *iface;
-	NlRouteForeachFunc callback;
-	gpointer user_data;
-	struct rtnl_route *out_route;
-} ForeachRouteInfo;
-
-static void
-foreach_route_cb (struct nl_object *object, void *user_data)
-{
-	ForeachRouteInfo *info = user_data;
-	struct rtnl_route *route = (struct rtnl_route *) object;
-	struct nl_addr *dst;
-
-	if (info->out_route)
-		return;
-
-	if (nm_logging_level_enabled (LOGL_DEBUG))
-		dump_route (route);
-
-	if (   info->ifindex > 0
-	    && rtnl_route_get_oif (route) != info->ifindex)
-		return;
-
-	if (   info->scope != RT_SCOPE_UNIVERSE
-	    && rtnl_route_get_scope (route) != info->scope)
-		return;
-
-	if (   info->family != AF_UNSPEC
-	    && rtnl_route_get_family (route) != info->family)
-		return;
-
-	dst = rtnl_route_get_dst (route);
-
-	/* Check for IPv6 LL and MC routes that might need to be ignored */
-	if (   (info->family == AF_INET6 || info->family == AF_UNSPEC)
-	    && (rtnl_route_get_family (route) == AF_INET6)) {
-		struct in6_addr *addr = NULL;
-
-		if (dst)
-			addr = nl_addr_get_binary_addr (dst);
-		if (addr) {
-			if (   IN6_IS_ADDR_LINKLOCAL (addr)
-			    || IN6_IS_ADDR_MC_LINKLOCAL (addr)
-			    || (IN6_IS_ADDR_MULTICAST (addr) && (nl_addr_get_prefixlen (dst) == 8)))
-				return;
-		}
-	}
-
-	info->out_route = info->callback (route, dst, info->iface, info->user_data);
-	if (info->out_route) {
-		/* Ref the route so it sticks around after the cache is cleared */
-		rtnl_route_get (info->out_route);
-	}
-}
-
-/**
- * nm_netlink_foreach_route:
- * @ifindex: the interface index to filter routes for
- * @family: the address family to filter routes for
- * @scope: route scope, eg RT_SCOPE_LINK
- * @ignore_inet6_ll_mc: if %TRUE ignore IPv6 link-local and multi-cast routes
- * @callback: function called when a route matches the filter
- * @user_data: data passed to @callback
- *
- * Filters each route in the routing table against the given @ifindex and
- * @family (if given) and calls @callback for each matching route.
- *
- * Returns: a route if @callback returned one; the caller must dispose of the
- * route using rtnl_route_put() when it is no longer required.
- **/
-struct rtnl_route *
-nm_netlink_foreach_route (int ifindex,
-                          int family,
-                          int scope,
-                          gboolean ignore_inet6_ll_mc,
-                          NlRouteForeachFunc callback,
-                          gpointer user_data)
-{
-	struct nl_cache *cache;
-	ForeachRouteInfo info;
-
-	memset (&info, 0, sizeof (info));
-	info.ifindex = ifindex;
-	info.family = family;
-	info.scope = scope;
-	info.ignore_inet6_ll_mc = ignore_inet6_ll_mc;
-	info.callback = callback;
-	info.user_data = user_data;
-	info.iface = nm_netlink_index_to_iface (ifindex);
-
-	rtnl_route_alloc_cache (nm_netlink_get_default_handle (), family, 0, &cache);
-	g_warn_if_fail (cache != NULL);
-	if (cache) {
-		nl_cache_foreach (cache, foreach_route_cb, &info);
-		nl_cache_free (cache);
-	}
-	g_free (info.iface);
-	return info.out_route;
-}
-
-