/* * net/tipc/addr.c: TIPC address utility routines * * Copyright (c) 2000-2006, 2018, Ericsson AB * Copyright (c) 2004-2005, 2010-2011, Wind River Systems * Copyright (c) 2020-2021, Red Hat Inc * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright *    notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright *    notice, this list of conditions and the following disclaimer in the *    documentation and/or other materials provided with the distribution. * 3. Neither the names of the copyright holders nor the names of its *    contributors may be used to endorse or promote products derived from *    this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include "addr.h"#include "core.h" bool tipc_in_scope(bool legacy_format, u32 domain, u32 addr){	if (!domain || (domain == addr))		return true;	if (!legacy_format)		return false;	if (domain == tipc_cluster_mask(addr)) /* domain <Z.C.0> */		return true;	if (domain == (addr & TIPC_ZONE_CLUSTER_MASK)) /* domain <Z.C.0> */		return true;	if (domain == (addr & TIPC_ZONE_MASK)) /* domain <Z.0.0> */		return true;	return false;} void tipc_set_node_id(struct net *net, u8 *id){	struct tipc_net *tn = tipc_net(net); 	memcpy(tn->node_id, id, NODE_ID_LEN);	tipc_nodeid2string(tn->node_id_string, id);	tn->trial_addr = hash128to32(id);	pr_info("Node identity %s, cluster identity %u\n",		tipc_own_id_string(net), tn->net_id);} void tipc_set_node_addr(struct net *net, u32 addr){	struct tipc_net *tn = tipc_net(net);	u8 node_id[NODE_ID_LEN] = {0,}; 	tn->node_addr = addr;	if (!tipc_own_id(net)) {		sprintf(node_id, "%x", addr);		tipc_set_node_id(net, node_id);	}	tn->trial_addr = addr;	tn->addr_trial_end = jiffies;	pr_info("Node number set to %u\n", addr);} int tipc_nodeid2string(char *str, u8 *id){	int i;	u8 c; 	/* Already a string ? */	for (i = 0; i < NODE_ID_LEN; i++) {		c = id[i];		if (c >= '0' && c <= '9')			continue;		if (c >= 'A' && c <= 'Z')			continue;		if (c >= 'a' && c <= 'z')			continue;		if (c == '.')			continue;		if (c == ':')			continue;		if (c == '_')			continue;		if (c == '-')			continue;		if (c == '@')			continue;		if (c != 0)			break;	}	if (i == NODE_ID_LEN) {		memcpy(str, id, NODE_ID_LEN);		str[NODE_ID_LEN] = 0;		return i;	} 	/* Translate to hex string */	for (i = 0; i < NODE_ID_LEN; i++)		sprintf(&str[2 * i], "%02x", id[i]); 	/* Strip off trailing zeroes */	for (i = NODE_ID_STR_LEN - 2; str[i] == '0'; i--)		str[i] = 0; 	return i + 1;}