X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=src%2Fsubnet.c;fp=src%2Fsubnet.c;h=0000000000000000000000000000000000000000;hb=1ffa0e102dc0d036241ee1ea2a13df42526c0872;hp=e45d0045235f59802253d2d2add3bb61586b74eb;hpb=b3b89e46b1b84fa6cf1726fabe9e9c7bb0d3d831;p=meshlink diff --git a/src/subnet.c b/src/subnet.c deleted file mode 100644 index e45d0045..00000000 --- a/src/subnet.c +++ /dev/null @@ -1,279 +0,0 @@ -/* - subnet.c -- handle subnet lookups and lists - Copyright (C) 2000-2013 Guus Sliepen , - 2000-2005 Ivo Timmermans - - 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 "splay_tree.h" -#include "control_common.h" -#include "hash.h" -#include "logger.h" -#include "names.h" -#include "net.h" -#include "netutl.h" -#include "node.h" -#include "script.h" -#include "subnet.h" -#include "utils.h" -#include "xalloc.h" - -/* lists type of subnet */ - -splay_tree_t *subnet_tree; - -/* Subnet lookup cache */ - -hash_t *ipv4_cache; -hash_t *ipv6_cache; -hash_t *mac_cache; - -void subnet_cache_flush(void) { - hash_clear(ipv4_cache); - hash_clear(ipv6_cache); - hash_clear(mac_cache); -} - -/* Initialising trees */ - -void init_subnets(void) { - subnet_tree = splay_alloc_tree((splay_compare_t) subnet_compare, (splay_action_t) free_subnet); - - ipv4_cache = hash_alloc(0x100, sizeof(ipv4_t)); - ipv6_cache = hash_alloc(0x100, sizeof(ipv6_t)); - mac_cache = hash_alloc(0x100, sizeof(mac_t)); -} - -void exit_subnets(void) { - splay_delete_tree(subnet_tree); - - hash_free(ipv4_cache); - hash_free(ipv6_cache); - hash_free(mac_cache); -} - -splay_tree_t *new_subnet_tree(void) { - return splay_alloc_tree((splay_compare_t) subnet_compare, NULL); -} - -void free_subnet_tree(splay_tree_t *subnet_tree) { - splay_delete_tree(subnet_tree); -} - -/* Allocating and freeing space for subnets */ - -subnet_t *new_subnet(void) { - return xzalloc(sizeof(subnet_t)); -} - -void free_subnet(subnet_t *subnet) { - free(subnet); -} - -/* Adding and removing subnets */ - -void subnet_add(node_t *n, subnet_t *subnet) { - subnet->owner = n; - - splay_insert(subnet_tree, subnet); - splay_insert(n->subnet_tree, subnet); - - subnet_cache_flush(); -} - -void subnet_del(node_t *n, subnet_t *subnet) { - splay_delete(n->subnet_tree, subnet); - splay_delete(subnet_tree, subnet); - - subnet_cache_flush(); -} - -/* Subnet lookup routines */ - -subnet_t *lookup_subnet(const node_t *owner, const subnet_t *subnet) { - return splay_search(owner->subnet_tree, subnet); -} - -subnet_t *lookup_subnet_mac(const node_t *owner, const mac_t *address) { - subnet_t *r = NULL; - - // Check if this address is cached - - if((r = hash_search(mac_cache, address))) - return r; - - // Search all subnets for a matching one - - for splay_each(subnet_t, p, owner ? owner->subnet_tree : subnet_tree) { - if(!p || p->type != SUBNET_MAC) - continue; - - if(!memcmp(address, &p->net.mac.address, sizeof *address)) { - r = p; - if(p->owner->status.reachable) - break; - } - } - - // Cache the result - - if(r) - hash_insert(mac_cache, address, r); - - return r; -} - -subnet_t *lookup_subnet_ipv4(const ipv4_t *address) { - subnet_t *r = NULL; - - // Check if this address is cached - - if((r = hash_search(ipv4_cache, address))) - return r; - - // Search all subnets for a matching one - - for splay_each(subnet_t, p, subnet_tree) { - if(!p || p->type != SUBNET_IPV4) - continue; - - if(!maskcmp(address, &p->net.ipv4.address, p->net.ipv4.prefixlength)) { - r = p; - if(p->owner->status.reachable) - break; - } - } - - // Cache the result - - if(r) - hash_insert(ipv4_cache, address, r); - - return r; -} - -subnet_t *lookup_subnet_ipv6(const ipv6_t *address) { - subnet_t *r = NULL; - - // Check if this address is cached - - if((r = hash_search(ipv6_cache, address))) - return r; - - // Search all subnets for a matching one - - for splay_each(subnet_t, p, subnet_tree) { - if(!p || p->type != SUBNET_IPV6) - continue; - - if(!maskcmp(address, &p->net.ipv6.address, p->net.ipv6.prefixlength)) { - r = p; - if(p->owner->status.reachable) - break; - } - } - - // Cache the result - - if(r) - hash_insert(ipv6_cache, address, r); - - return r; -} - -void subnet_update(node_t *owner, subnet_t *subnet, bool up) { - char netstr[MAXNETSTR]; - char *name, *address, *port; - char empty[] = ""; - - // Prepare environment variables to be passed to the script - - char *envp[10] = {NULL}; - xasprintf(&envp[0], "NETNAME=%s", netname ? : ""); - xasprintf(&envp[3], "NODE=%s", owner->name); - - if(owner != myself) { - sockaddr2str(&owner->address, &address, &port); - // 4 and 5 are reserved for SUBNET and WEIGHT - xasprintf(&envp[6], "REMOTEADDRESS=%s", address); - xasprintf(&envp[7], "REMOTEPORT=%s", port); - free(port); - free(address); - } - - xasprintf(&envp[8], "NAME=%s", myself->name); - - name = up ? "subnet-up" : "subnet-down"; - - if(!subnet) { - for splay_each(subnet_t, subnet, owner->subnet_tree) { - if(!net2str(netstr, sizeof netstr, subnet)) - continue; - - // Strip the weight from the subnet, and put it in its own environment variable - char *weight = strchr(netstr, '#'); - if(weight) - *weight++ = 0; - else - weight = empty; - - // Prepare the SUBNET and WEIGHT variables - if(envp[4]) - free(envp[4]); - if(envp[5]) - free(envp[5]); - xasprintf(&envp[4], "SUBNET=%s", netstr); - xasprintf(&envp[5], "WEIGHT=%s", weight); - - execute_script(name, envp); - } - } else { - if(net2str(netstr, sizeof netstr, subnet)) { - // Strip the weight from the subnet, and put it in its own environment variable - char *weight = strchr(netstr, '#'); - if(weight) - *weight++ = 0; - else - weight = empty; - - // Prepare the SUBNET and WEIGHT variables - xasprintf(&envp[4], "SUBNET=%s", netstr); - xasprintf(&envp[5], "WEIGHT=%s", weight); - - execute_script(name, envp); - } - } - - for(int i = 0; envp[i] && i < 9; i++) - free(envp[i]); -} - -bool dump_subnets(connection_t *c) { - for splay_each(subnet_t, subnet, subnet_tree) { - char netstr[MAXNETSTR]; - - if(!net2str(netstr, sizeof netstr, subnet)) - continue; - - send_request(c, "%d %d %s %s", - CONTROL, REQ_DUMP_SUBNETS, - netstr, subnet->owner->name); - } - - return send_request(c, "%d %d", CONTROL, REQ_DUMP_SUBNETS); -}