X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;ds=sidebyside;f=src%2Fprotocol_subnet.c;fp=src%2Fprotocol_subnet.c;h=0000000000000000000000000000000000000000;hb=1ffa0e102dc0d036241ee1ea2a13df42526c0872;hp=06dafbc78c47467385856d881996a79e440019d9;hpb=b3b89e46b1b84fa6cf1726fabe9e9c7bb0d3d831;p=meshlink diff --git a/src/protocol_subnet.c b/src/protocol_subnet.c deleted file mode 100644 index 06dafbc7..00000000 --- a/src/protocol_subnet.c +++ /dev/null @@ -1,243 +0,0 @@ -/* - protocol_subnet.c -- handle the meta-protocol, subnets - Copyright (C) 1999-2005 Ivo Timmermans, - 2000-2012 Guus Sliepen - 2009 Michael Tokarev - - 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. -*/ - -#include "system.h" - -#include "conf.h" -#include "connection.h" -#include "logger.h" -#include "net.h" -#include "netutl.h" -#include "node.h" -#include "protocol.h" -#include "subnet.h" -#include "utils.h" -#include "xalloc.h" - -bool send_add_subnet(connection_t *c, const subnet_t *subnet) { - char netstr[MAXNETSTR]; - - if(!net2str(netstr, sizeof netstr, subnet)) - return false; - - return send_request(c, "%d %x %s %s", ADD_SUBNET, rand(), subnet->owner->name, netstr); -} - -bool add_subnet_h(connection_t *c, const char *request) { - char subnetstr[MAX_STRING_SIZE]; - char name[MAX_STRING_SIZE]; - node_t *owner; - subnet_t s = {NULL}, *new, *old; - - if(sscanf(request, "%*d %*x " MAX_STRING " " MAX_STRING, name, subnetstr) != 2) { - logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s)", "ADD_SUBNET", c->name, - c->hostname); - return false; - } - - /* Check if owner name is valid */ - - if(!check_id(name)) { - logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s): %s", "ADD_SUBNET", c->name, - c->hostname, "invalid name"); - return false; - } - - /* Check if subnet string is valid */ - - if(!str2net(&s, subnetstr)) { - logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s): %s", "ADD_SUBNET", c->name, - c->hostname, "invalid subnet string"); - return false; - } - - if(seen_request(request)) - return true; - - /* Check if the owner of the new subnet is in the connection list */ - - owner = lookup_node(name); - - if(tunnelserver && owner != myself && owner != c->node) { - /* in case of tunnelserver, ignore indirect subnet registrations */ - logger(DEBUG_PROTOCOL, LOG_WARNING, "Ignoring indirect %s from %s (%s) for %s", - "ADD_SUBNET", c->name, c->hostname, subnetstr); - return true; - } - - if(!owner) { - owner = new_node(); - owner->name = xstrdup(name); - node_add(owner); - } - - /* Check if we already know this subnet */ - - if(lookup_subnet(owner, &s)) - return true; - - /* If we don't know this subnet, but we are the owner, retaliate with a DEL_SUBNET */ - - if(owner == myself) { - logger(DEBUG_PROTOCOL, LOG_WARNING, "Got %s from %s (%s) for ourself", - "ADD_SUBNET", c->name, c->hostname); - s.owner = myself; - send_del_subnet(c, &s); - return true; - } - - /* In tunnel server mode, we should already know all allowed subnets */ - - if(tunnelserver) { - logger(DEBUG_ALWAYS, LOG_WARNING, "Ignoring unauthorized %s from %s (%s): %s", - "ADD_SUBNET", c->name, c->hostname, subnetstr); - return true; - } - - /* Ignore if strictsubnets is true, but forward it to others */ - - if(strictsubnets) { - logger(DEBUG_ALWAYS, LOG_WARNING, "Ignoring unauthorized %s from %s (%s): %s", - "ADD_SUBNET", c->name, c->hostname, subnetstr); - forward_request(c, request); - return true; - } - - /* If everything is correct, add the subnet to the list of the owner */ - - *(new = new_subnet()) = s; - subnet_add(owner, new); - - if(owner->status.reachable) - subnet_update(owner, new, true); - - /* Tell the rest */ - - if(!tunnelserver) - forward_request(c, request); - - /* Fast handoff of roaming MAC addresses */ - - if(s.type == SUBNET_MAC && owner != myself && (old = lookup_subnet(myself, &s)) && old->expires) - old->expires = 1; - - return true; -} - -bool send_del_subnet(connection_t *c, const subnet_t *s) { - char netstr[MAXNETSTR]; - - if(!net2str(netstr, sizeof netstr, s)) - return false; - - return send_request(c, "%d %x %s %s", DEL_SUBNET, rand(), s->owner->name, netstr); -} - -bool del_subnet_h(connection_t *c, const char *request) { - char subnetstr[MAX_STRING_SIZE]; - char name[MAX_STRING_SIZE]; - node_t *owner; - subnet_t s = {NULL}, *find; - - if(sscanf(request, "%*d %*x " MAX_STRING " " MAX_STRING, name, subnetstr) != 2) { - logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s)", "DEL_SUBNET", c->name, - c->hostname); - return false; - } - - /* Check if owner name is valid */ - - if(!check_id(name)) { - logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s): %s", "DEL_SUBNET", c->name, - c->hostname, "invalid name"); - return false; - } - - /* Check if subnet string is valid */ - - if(!str2net(&s, subnetstr)) { - logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s): %s", "DEL_SUBNET", c->name, - c->hostname, "invalid subnet string"); - return false; - } - - if(seen_request(request)) - return true; - - /* Check if the owner of the subnet being deleted is in the connection list */ - - owner = lookup_node(name); - - if(tunnelserver && owner != myself && owner != c->node) { - /* in case of tunnelserver, ignore indirect subnet deletion */ - logger(DEBUG_PROTOCOL, LOG_WARNING, "Ignoring indirect %s from %s (%s) for %s", - "DEL_SUBNET", c->name, c->hostname, subnetstr); - return true; - } - - if(!owner) { - logger(DEBUG_PROTOCOL, LOG_WARNING, "Got %s from %s (%s) for %s which is not in our node tree", - "DEL_SUBNET", c->name, c->hostname, name); - return true; - } - - /* If everything is correct, delete the subnet from the list of the owner */ - - s.owner = owner; - - find = lookup_subnet(owner, &s); - - if(!find) { - logger(DEBUG_PROTOCOL, LOG_WARNING, "Got %s from %s (%s) for %s which does not appear in his subnet tree", - "DEL_SUBNET", c->name, c->hostname, name); - if(strictsubnets) - forward_request(c, request); - return true; - } - - /* If we are the owner of this subnet, retaliate with an ADD_SUBNET */ - - if(owner == myself) { - logger(DEBUG_PROTOCOL, LOG_WARNING, "Got %s from %s (%s) for ourself", - "DEL_SUBNET", c->name, c->hostname); - send_add_subnet(c, find); - return true; - } - - if(tunnelserver) - return true; - - /* Tell the rest */ - - if(!tunnelserver) - forward_request(c, request); - if(strictsubnets) - return true; - - /* Finally, delete it. */ - - if(owner->status.reachable) - subnet_update(owner, find, false); - - subnet_del(owner, find); - - return true; -}