X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fprotocol_subnet.c;h=cdfcb6d0c33f95313d8847d20561af9e27747fab;hp=76cdd49ab03a81893065efe5e7b71add5c9e894b;hb=a227843b739d279b63adcf3736ebb03d856080c4;hpb=5a1406adefd8b51981af0da5ac0ebec830eb43b4 diff --git a/src/protocol_subnet.c b/src/protocol_subnet.c index 76cdd49a..cdfcb6d0 100644 --- a/src/protocol_subnet.c +++ b/src/protocol_subnet.c @@ -1,7 +1,8 @@ /* protocol_subnet.c -- handle the meta-protocol, subnets - Copyright (C) 1999-2003 Ivo Timmermans , - 2000-2003 Guus Sliepen + Copyright (C) 1999-2005 Ivo Timmermans, + 2000-2009 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 @@ -13,11 +14,9 @@ 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., 675 Mass Ave, Cambridge, MA 02139, USA. - - $Id: protocol_subnet.c,v 1.1.4.18 2003/12/12 19:52:25 guus Exp $ + 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" @@ -33,34 +32,28 @@ #include "utils.h" #include "xalloc.h" -bool send_add_subnet(connection_t *c, const subnet_t *subnet) -{ +bool send_add_subnet(connection_t *c, const subnet_t *subnet) { char netstr[MAXNETSTR]; - cp(); - if(!net2str(netstr, sizeof netstr, subnet)) return false; - return send_request(c, "%d %lx %s %s", ADD_SUBNET, random(), subnet->owner->name, netstr); + return send_request(c, "%d %x %s %s", ADD_SUBNET, rand(), subnet->owner->name, netstr); } -bool add_subnet_h(connection_t *c) -{ +bool add_subnet_h(connection_t *c) { char subnetstr[MAX_STRING_SIZE]; char name[MAX_STRING_SIZE]; node_t *owner; subnet_t s = {0}, *new; - cp(); - if(sscanf(c->buffer, "%*d %*x " MAX_STRING " " MAX_STRING, name, subnetstr) != 2) { logger(LOG_ERR, _("Got bad %s from %s (%s)"), "ADD_SUBNET", c->name, c->hostname); return false; } - /* Check if owner name is a valid */ + /* Check if owner name is valid */ if(!check_id(name)) { logger(LOG_ERR, _("Got bad %s from %s (%s): %s"), "ADD_SUBNET", c->name, @@ -83,15 +76,19 @@ bool add_subnet_h(connection_t *c) owner = lookup_node(name); + if(tunnelserver && owner != myself && owner != c->node) { + /* in case of tunnelserver, ignore indirect subnet registrations */ + ifdebug(PROTOCOL) logger(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); } - if(tunnelserver && owner != myself && owner != c->node) - return false; - /* Check if we already know this subnet */ if(lookup_subnet(owner, &s)) @@ -123,8 +120,11 @@ bool add_subnet_h(connection_t *c) free_subnet(allowed); } - if(!cfg) + if(!cfg) { + logger(LOG_WARNING, _("Unauthorized %s from %s (%s) for %s"), + "ADD_SUBNET", c->name, c->hostname, subnetstr); return false; + } free_subnet(allowed); } @@ -134,6 +134,9 @@ bool add_subnet_h(connection_t *c) *(new = new_subnet()) = s; subnet_add(owner, new); + if(owner->status.reachable) + subnet_update(owner, new, true); + /* Tell the rest */ if(!tunnelserver) @@ -142,34 +145,28 @@ bool add_subnet_h(connection_t *c) return true; } -bool send_del_subnet(connection_t *c, const subnet_t *s) -{ +bool send_del_subnet(connection_t *c, const subnet_t *s) { char netstr[MAXNETSTR]; - cp(); - if(!net2str(netstr, sizeof netstr, s)) return false; - return send_request(c, "%d %lx %s %s", DEL_SUBNET, random(), s->owner->name, netstr); + return send_request(c, "%d %x %s %s", DEL_SUBNET, rand(), s->owner->name, netstr); } -bool del_subnet_h(connection_t *c) -{ +bool del_subnet_h(connection_t *c) { char subnetstr[MAX_STRING_SIZE]; char name[MAX_STRING_SIZE]; node_t *owner; subnet_t s = {0}, *find; - cp(); - if(sscanf(c->buffer, "%*d %*x " MAX_STRING " " MAX_STRING, name, subnetstr) != 2) { logger(LOG_ERR, _("Got bad %s from %s (%s)"), "DEL_SUBNET", c->name, c->hostname); return false; } - /* Check if owner name is a valid */ + /* Check if owner name is valid */ if(!check_id(name)) { logger(LOG_ERR, _("Got bad %s from %s (%s): %s"), "DEL_SUBNET", c->name, @@ -177,19 +174,6 @@ bool del_subnet_h(connection_t *c) return false; } - /* Check if the owner of the new subnet is in the connection list */ - - owner = lookup_node(name); - - if(!owner) { - ifdebug(PROTOCOL) logger(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(tunnelserver && owner != myself && owner != c->node) - return false; - /* Check if subnet string is valid */ if(!str2net(&s, subnetstr)) { @@ -201,6 +185,23 @@ bool del_subnet_h(connection_t *c) if(seen_request(c->buffer)) 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 */ + ifdebug(PROTOCOL) logger(LOG_WARNING, _("Ignoring indirect %s from %s (%s) for %s"), + "DEL_SUBNET", c->name, c->hostname, subnetstr); + return true; + } + + if(!owner) { + ifdebug(PROTOCOL) logger(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; @@ -229,6 +230,9 @@ bool del_subnet_h(connection_t *c) /* Finally, delete it. */ + if(owner->status.reachable) + subnet_update(owner, find, false); + subnet_del(owner, find); return true;