X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fsubnet.c;h=154fd8048b16285ff79c8d8b3665ff72a5f84db4;hp=ab881f47de495cfe373aaccd914f19b890c483a4;hb=HEAD;hpb=d3f889c8076dff9c00ebfe1459cb36425f8da41d diff --git a/src/subnet.c b/src/subnet.c index ab881f47..da69810c 100644 --- a/src/subnet.c +++ b/src/subnet.c @@ -1,7 +1,7 @@ /* subnet.c -- handle subnet lookups and lists - Copyright (C) 2000,2001 Guus Sliepen , - 2000,2001 Ivo Timmermans + Copyright (C) 2000-2019 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 @@ -13,306 +13,599 @@ 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: subnet.c,v 1.1.2.17 2001/01/07 17:09:06 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 "config.h" - -#include -#include +#include "system.h" -#include "conf.h" +#include "avl_tree.h" +#include "device.h" +#include "logger.h" #include "net.h" -#include "connection.h" +#include "netutl.h" +#include "node.h" +#include "process.h" #include "subnet.h" -#include "system.h" - -#include -#include -#include +#include "utils.h" +#include "xalloc.h" /* lists type of subnet */ avl_tree_t *subnet_tree; -void init_subnets(void) -{ -cp - subnet_tree = avl_alloc_tree((avl_compare_t)subnet_compare, (avl_action_t)free_subnet); -cp +/* Subnet lookup cache */ + +static ipv4_t cache_ipv4_address[2]; +static subnet_t *cache_ipv4_subnet[2]; +static bool cache_ipv4_valid[2]; +static int cache_ipv4_slot; + +static ipv6_t cache_ipv6_address[2]; +static subnet_t *cache_ipv6_subnet[2]; +static bool cache_ipv6_valid[2]; +static int cache_ipv6_slot; + +static mac_t cache_mac_address[2]; +static subnet_t *cache_mac_subnet[2]; +static bool cache_mac_valid[2]; +static int cache_mac_slot; + +void subnet_cache_flush(void) { + cache_ipv4_valid[0] = cache_ipv4_valid[1] = false; + cache_ipv6_valid[0] = cache_ipv6_valid[1] = false; + cache_mac_valid[0] = cache_mac_valid[1] = false; } /* Subnet comparison */ -int subnet_compare_mac(subnet_t *a, subnet_t *b) -{ -cp - return memcmp(&a->net.mac.address, &b->net.mac.address, sizeof(mac_t)); +static int subnet_compare_mac(const subnet_t *a, const subnet_t *b) { + int result; + + result = memcmp(&a->net.mac.address, &b->net.mac.address, sizeof(mac_t)); + + if(result) { + return result; + } + + result = a->weight - b->weight; + + if(result || !a->owner || !b->owner) { + return result; + } + + return strcmp(a->owner->name, b->owner->name); +} + +static int subnet_compare_ipv4(const subnet_t *a, const subnet_t *b) { + int result; + + result = b->net.ipv4.prefixlength - a->net.ipv4.prefixlength; + + if(result) { + return result; + } + + result = memcmp(&a->net.ipv4.address, &b->net.ipv4.address, sizeof(ipv4_t)); + + if(result) { + return result; + } + + result = a->weight - b->weight; + + if(result || !a->owner || !b->owner) { + return result; + } + + return strcmp(a->owner->name, b->owner->name); +} + +static int subnet_compare_ipv6(const subnet_t *a, const subnet_t *b) { + int result; + + result = b->net.ipv6.prefixlength - a->net.ipv6.prefixlength; + + if(result) { + return result; + } + + result = memcmp(&a->net.ipv6.address, &b->net.ipv6.address, sizeof(ipv6_t)); + + if(result) { + return result; + } + + result = a->weight - b->weight; + + if(result || !a->owner || !b->owner) { + return result; + } + + return strcmp(a->owner->name, b->owner->name); } -int subnet_compare_ipv4(subnet_t *a, subnet_t *b) -{ -cp - /* If the subnet of a falls within the range of subnet b, - then we consider a smaller then b. - Otherwise, the addresses alone (and not the subnet masks) will be compared. - */ - - if(a->net.ipv4.mask > b->net.ipv4.mask) - if((a->net.ipv4.address & b->net.ipv4.mask) == b->net.ipv4.address) - return -1; - - return a->net.ipv4.address - b->net.ipv4.address; +int subnet_compare(const subnet_t *a, const subnet_t *b) { + int result; + + result = a->type - b->type; + + if(result) { + return result; + } + + switch(a->type) { + case SUBNET_MAC: + return subnet_compare_mac(a, b); + + case SUBNET_IPV4: + return subnet_compare_ipv4(a, b); + + case SUBNET_IPV6: + return subnet_compare_ipv6(a, b); + + default: + logger(LOG_ERR, "subnet_compare() was called with unknown subnet type %d, exitting!", + a->type); + exit(0); + } + + return 0; } -int subnet_compare_ipv6(subnet_t *a, subnet_t *b) -{ -cp - /* Same as ipv4 case, but with nasty 128 bit addresses */ - - if(memcmp(&a->net.ipv6.mask, &b->net.ipv6.mask, sizeof(ipv6_t)) > 0) - if((a->net.ipv6.address.x[0] & b->net.ipv6.mask.x[0]) == b->net.ipv6.address.x[0] && - (a->net.ipv6.address.x[1] & b->net.ipv6.mask.x[1]) == b->net.ipv6.address.x[1] && - (a->net.ipv6.address.x[2] & b->net.ipv6.mask.x[2]) == b->net.ipv6.address.x[2] && - (a->net.ipv6.address.x[3] & b->net.ipv6.mask.x[3]) == b->net.ipv6.address.x[3] && - (a->net.ipv6.address.x[4] & b->net.ipv6.mask.x[4]) == b->net.ipv6.address.x[4] && - (a->net.ipv6.address.x[5] & b->net.ipv6.mask.x[5]) == b->net.ipv6.address.x[5] && - (a->net.ipv6.address.x[6] & b->net.ipv6.mask.x[6]) == b->net.ipv6.address.x[6] && - (a->net.ipv6.address.x[7] & b->net.ipv6.mask.x[7]) == b->net.ipv6.address.x[7]) - return -1; - - return memcmp(&a->net.ipv6.address, &b->net.ipv6.address, sizeof(ipv6_t)); +/* Initialising trees */ + +void init_subnets(void) { + subnet_tree = avl_alloc_tree((avl_compare_t) subnet_compare, (avl_action_t) free_subnet); + + subnet_cache_flush(); } -int subnet_compare(subnet_t *a, subnet_t *b) -{ - int x; -cp - x = a->type - b->type; - if(x) - return x; - - switch(a->type) - { - case SUBNET_MAC: - return subnet_compare_mac(a, b); - case SUBNET_IPV4: - return subnet_compare_ipv4(a, b); - case SUBNET_IPV6: - return subnet_compare_ipv6(a, b); - default: - syslog(LOG_ERR, _("subnet_compare() was called with unknown subnet type %d, restarting!"), a->type); - sighup = 1; - return 0; - } +void exit_subnets(void) { + avl_delete_tree(subnet_tree); +} + +avl_tree_t *new_subnet_tree(void) { + return avl_alloc_tree((avl_compare_t) subnet_compare, NULL); +} + +void free_subnet_tree(avl_tree_t *subnet_tree) { + avl_delete_tree(subnet_tree); } /* Allocating and freeing space for subnets */ -subnet_t *new_subnet(void) -{ -cp - return (subnet_t *)xmalloc(sizeof(subnet_t)); +subnet_t *new_subnet(void) { + return xmalloc_and_zero(sizeof(subnet_t)); } -void free_subnet(subnet_t *subnet) -{ -cp - free(subnet); +void free_subnet(subnet_t *subnet) { + free(subnet); } -/* Linked list management */ +/* Adding and removing subnets */ + +void subnet_add(node_t *n, subnet_t *subnet) { + subnet->owner = n; -void subnet_add(connection_t *cl, subnet_t *subnet) -{ -cp - subnet->owner = cl; - avl_insert(subnet_tree, subnet); - avl_insert(cl->subnet_tree, subnet); -cp + avl_insert(subnet_tree, subnet); + avl_insert(n->subnet_tree, subnet); + + subnet_cache_flush(); } -void subnet_del(subnet_t *subnet) -{ -cp - avl_delete(subnet->owner->subnet_tree, subnet); -cp - avl_delete(subnet_tree, subnet); -cp +void subnet_del(node_t *n, subnet_t *subnet) { + avl_delete(n->subnet_tree, subnet); + avl_delete(subnet_tree, subnet); + + subnet_cache_flush(); } /* Ascii representation of subnets */ -subnet_t *str2net(char *subnetstr) -{ - int type; - subnet_t *subnet; -cp - if(sscanf(subnetstr, "%d,", &type) != 1) - return NULL; -cp - subnet = new_subnet(); -cp - switch(type) - { - case SUBNET_MAC: - if(sscanf(subnetstr, "%d,%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", &subnet->type, - &subnet->net.mac.address.x[0], - &subnet->net.mac.address.x[1], - &subnet->net.mac.address.x[2], - &subnet->net.mac.address.x[3], - &subnet->net.mac.address.x[4], - &subnet->net.mac.address.x[5]) != 7) - { - free_subnet(subnet); - return NULL; - } - break; - case SUBNET_IPV4: - if(sscanf(subnetstr, "%d,%lx/%lx", &subnet->type, &subnet->net.ipv4.address, &subnet->net.ipv4.mask) != 3) - { - free_subnet(subnet); - return NULL; - } - break; - case SUBNET_IPV6: - if(sscanf(subnetstr, "%d,%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx/%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx", &subnet->type, - &subnet->net.ipv6.address.x[0], - &subnet->net.ipv6.address.x[1], - &subnet->net.ipv6.address.x[2], - &subnet->net.ipv6.address.x[3], - &subnet->net.ipv6.address.x[4], - &subnet->net.ipv6.address.x[5], - &subnet->net.ipv6.address.x[6], - &subnet->net.ipv6.address.x[7], - &subnet->net.ipv6.mask.x[0], - &subnet->net.ipv6.mask.x[1], - &subnet->net.ipv6.mask.x[2], - &subnet->net.ipv6.mask.x[3], - &subnet->net.ipv6.mask.x[4], - &subnet->net.ipv6.mask.x[5], - &subnet->net.ipv6.mask.x[6], - &subnet->net.ipv6.mask.x[7]) != 17) - { - free_subnet(subnet); - return NULL; - } - break; - default: - free_subnet(subnet); - return NULL; - } -cp - return subnet; +bool str2net(subnet_t *subnet, const char *subnetstr) { + char str[64]; + strncpy(str, subnetstr, sizeof(str)); + str[sizeof(str) - 1] = 0; + int consumed; + + int weight = 10; + char *weight_separator = strchr(str, '#'); + + if(weight_separator) { + char *weight_str = weight_separator + 1; + + if(sscanf(weight_str, "%d%n", &weight, &consumed) < 1) { + return false; + } + + if(weight_str[consumed]) { + return false; + } + + *weight_separator = 0; + } + + int prefixlength = -1; + char *prefixlength_separator = strchr(str, '/'); + + if(prefixlength_separator) { + char *prefixlength_str = prefixlength_separator + 1; + + if(sscanf(prefixlength_str, "%d%n", &prefixlength, &consumed) < 1) { + return false; + } + + if(prefixlength_str[consumed]) { + return false; + } + + *prefixlength_separator = 0; + + if(prefixlength < 0) { + return false; + } + } + + uint16_t x[8]; + + if(sscanf(str, "%hx:%hx:%hx:%hx:%hx:%hx%n", &x[0], &x[1], &x[2], &x[3], &x[4], &x[5], &consumed) >= 6 && !str[consumed]) { + /* + Normally we should check that each part has two digits to prevent ambiguities. + However, in old tinc versions net2str() will aggressively return MAC addresses with one-digit parts, + so we have to accept them otherwise we would be unable to parse ADD_SUBNET messages. + */ + if(prefixlength >= 0) { + return false; + } + + subnet->type = SUBNET_MAC; + subnet->weight = weight; + + for(int i = 0; i < 6; i++) { + subnet->net.mac.address.x[i] = x[i]; + } + + return true; + } + + if(inet_pton(AF_INET, str, &subnet->net.ipv4.address)) { + if(prefixlength == -1) { + prefixlength = 32; + } + + if(prefixlength > 32) { + return false; + } + + subnet->type = SUBNET_IPV4; + subnet->net.ipv4.prefixlength = prefixlength; + subnet->weight = weight; + + return true; + } + + if(inet_pton(AF_INET6, str, &subnet->net.ipv6.address)) { + if(prefixlength == -1) { + prefixlength = 128; + } + + if(prefixlength > 128) { + return false; + } + + subnet->type = SUBNET_IPV6; + subnet->net.ipv6.prefixlength = prefixlength; + subnet->weight = weight; + + return true; + } + + return false; } -char *net2str(subnet_t *subnet) -{ - char *netstr; -cp - switch(subnet->type) - { - case SUBNET_MAC: - asprintf(&netstr, "%d,%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", subnet->type, - subnet->net.mac.address.x[0], - subnet->net.mac.address.x[1], - subnet->net.mac.address.x[2], - subnet->net.mac.address.x[3], - subnet->net.mac.address.x[4], - subnet->net.mac.address.x[5]); - break; - case SUBNET_IPV4: - asprintf(&netstr, "%d,%lx/%lx", subnet->type, subnet->net.ipv4.address, subnet->net.ipv4.mask); - break; - case SUBNET_IPV6: - asprintf(&netstr, "%d,%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx/%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx", subnet->type, - subnet->net.ipv6.address.x[0], - subnet->net.ipv6.address.x[1], - subnet->net.ipv6.address.x[2], - subnet->net.ipv6.address.x[3], - subnet->net.ipv6.address.x[4], - subnet->net.ipv6.address.x[5], - subnet->net.ipv6.address.x[6], - subnet->net.ipv6.address.x[7], - subnet->net.ipv6.mask.x[0], - subnet->net.ipv6.mask.x[1], - subnet->net.ipv6.mask.x[2], - subnet->net.ipv6.mask.x[3], - subnet->net.ipv6.mask.x[4], - subnet->net.ipv6.mask.x[5], - subnet->net.ipv6.mask.x[6], - subnet->net.ipv6.mask.x[7]); - break; - default: - asprintf(&netstr, _("unknown")); - } -cp - return netstr; +bool net2str(char *netstr, int len, const subnet_t *subnet) { + if(!netstr || !subnet) { + logger(LOG_ERR, "net2str() was called with netstr=%p, subnet=%p!", (void *)netstr, (void *)subnet); + return false; + } + + int result; + int prefixlength = -1; + + switch(subnet->type) { + case SUBNET_MAC: + snprintf(netstr, len, "%02x:%02x:%02x:%02x:%02x:%02x", + subnet->net.mac.address.x[0], + subnet->net.mac.address.x[1], + subnet->net.mac.address.x[2], + subnet->net.mac.address.x[3], + subnet->net.mac.address.x[4], + subnet->net.mac.address.x[5]); + break; + + case SUBNET_IPV4: + inet_ntop(AF_INET, &subnet->net.ipv4.address, netstr, len); + prefixlength = subnet->net.ipv4.prefixlength; + + if(prefixlength == 32) { + prefixlength = -1; + } + + break; + + case SUBNET_IPV6: { + inet_ntop(AF_INET6, &subnet->net.ipv6.address, netstr, len); + prefixlength = subnet->net.ipv6.prefixlength; + + if(prefixlength == 128) { + prefixlength = -1; + } + + break; + } + + default: + logger(LOG_ERR, "net2str() was called with unknown subnet type %d, exiting!", subnet->type); + exit(1); + } + + size_t used = strlen(netstr); + netstr += used; + len -= used; + + if(prefixlength >= 0) { + result = snprintf(netstr, len, "/%d", prefixlength); + netstr += result; + len -= result; + } + + if(subnet->weight != 10) { + snprintf(netstr, len, "#%d", subnet->weight); + } + + return true; } /* Subnet lookup routines */ -subnet_t *lookup_subnet_mac(mac_t *address) -{ - subnet_t subnet, *p; -cp - subnet.type = SUBNET_MAC; - memcpy(&subnet.net.mac.address, address, sizeof(mac_t)); +subnet_t *lookup_subnet(const node_t *owner, const subnet_t *subnet) { + return avl_search(owner->subnet_tree, subnet); +} + +subnet_t *lookup_subnet_mac(const node_t *owner, const mac_t *address) { + subnet_t *p, *r = NULL; + avl_node_t *n; + int i; + + // Check if this address is cached + + for(i = 0; i < 2; i++) { + if(!cache_mac_valid[i]) { + continue; + } + + if(owner && cache_mac_subnet[i] && cache_mac_subnet[i]->owner != owner) { + continue; + } + + if(!memcmp(address, &cache_mac_address[i], sizeof(*address))) { + return cache_mac_subnet[i]; + } + } + + // Search all subnets for a matching one - p = (subnet_t *)avl_search(subnet_tree, &subnet); -cp - return p; + for(n = owner ? owner->subnet_tree->head : subnet_tree->head; n; n = n->next) { + p = n->data; + + 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 + + cache_mac_slot = !cache_mac_slot; + memcpy(&cache_mac_address[cache_mac_slot], address, sizeof(*address)); + cache_mac_subnet[cache_mac_slot] = r; + cache_mac_valid[cache_mac_slot] = true; + + return r; } -subnet_t *lookup_subnet_ipv4(ipv4_t *address) -{ - subnet_t subnet, *p; -cp - subnet.type = SUBNET_IPV4; - subnet.net.ipv4.address = *address; - subnet.net.ipv4.mask = 0xFFFFFFFF; - - p = (subnet_t *)avl_search_closest_greater(subnet_tree, &subnet); - - /* Check if the found subnet REALLY matches */ -cp - if(p && ((*address & p->net.ipv4.mask) == p->net.ipv4.address)) - return p; - else - return NULL; +subnet_t *lookup_subnet_ipv4(const ipv4_t *address) { + subnet_t *p, *r = NULL; + avl_node_t *n; + int i; + + // Check if this address is cached + + for(i = 0; i < 2; i++) { + if(!cache_ipv4_valid[i]) { + continue; + } + + if(!memcmp(address, &cache_ipv4_address[i], sizeof(*address))) { + return cache_ipv4_subnet[i]; + } + } + + // Search all subnets for a matching one + + for(n = subnet_tree->head; n; n = n->next) { + p = n->data; + + 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 + + cache_ipv4_slot = !cache_ipv4_slot; + memcpy(&cache_ipv4_address[cache_ipv4_slot], address, sizeof(*address)); + cache_ipv4_subnet[cache_ipv4_slot] = r; + cache_ipv4_valid[cache_ipv4_slot] = true; + + return r; +} + +subnet_t *lookup_subnet_ipv6(const ipv6_t *address) { + subnet_t *p, *r = NULL; + avl_node_t *n; + int i; + + // Check if this address is cached + + for(i = 0; i < 2; i++) { + if(!cache_ipv6_valid[i]) { + continue; + } + + if(!memcmp(address, &cache_ipv6_address[i], sizeof(*address))) { + return cache_ipv6_subnet[i]; + } + } + + // Search all subnets for a matching one + + for(n = subnet_tree->head; n; n = n->next) { + p = n->data; + + 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 + + cache_ipv6_slot = !cache_ipv6_slot; + memcpy(&cache_ipv6_address[cache_ipv6_slot], address, sizeof(*address)); + cache_ipv6_subnet[cache_ipv6_slot] = r; + cache_ipv6_valid[cache_ipv6_slot] = true; + + return r; } -subnet_t *lookup_subnet_ipv6(ipv6_t *address) -{ - subnet_t subnet; -cp - subnet.type = SUBNET_IPV6; - memcpy(&subnet.net.ipv6.address, address, sizeof(ipv6_t)); - memset(&subnet.net.ipv6.mask, 0xFF, 16); - -/* FIXME: check if it REALLY matches */ - - return (subnet_t *)avl_search_closest_greater(subnet_tree, &subnet); +void subnet_update(node_t *owner, subnet_t *subnet, bool up) { + avl_node_t *node; + int i; + char *envp[10] = {NULL}; + char netstr[MAXNETSTR]; + char *name, *address, *port; + char empty[] = ""; + + // Prepare environment variables to be passed to the script + + xasprintf(&envp[0], "NETNAME=%s", netname ? netname : ""); + xasprintf(&envp[1], "DEVICE=%s", device ? device : ""); + xasprintf(&envp[2], "INTERFACE=%s", iface ? iface : ""); + xasprintf(&envp[3], "NODE=%s", owner->name); + xasprintf(&envp[4], "NAME=%s", myself->name); + + if(owner != myself) { + sockaddr2str(&owner->address, &address, &port); + // 5 and 6 are reserved for SUBNET and WEIGHT + xasprintf(&envp[7], "REMOTEADDRESS=%s", address); + xasprintf(&envp[8], "REMOTEPORT=%s", port); + free(port); + free(address); + } + + name = up ? "subnet-up" : "subnet-down"; + + if(!subnet) { + for(node = owner->subnet_tree->head; node; node = node->next) { + subnet = node->data; + + 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 + free(envp[5]); + free(envp[6]); + + xasprintf(&envp[5], "SUBNET=%s", netstr); + xasprintf(&envp[6], "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[5], "SUBNET=%s", netstr); + xasprintf(&envp[6], "WEIGHT=%s", weight); + + execute_script(name, envp); + } + } + + for(i = 0; i < 9; i++) { + free(envp[i]); + } } -void dump_subnet_list(void) -{ - char *netstr; - subnet_t *subnet; - avl_node_t *node; -cp - syslog(LOG_DEBUG, _("Subnet list:")); - for(node = subnet_tree->head; node; node = node->next) - { - subnet = (subnet_t *)node->data; - netstr = net2str(subnet); - syslog(LOG_DEBUG, " %s owner %s", netstr, subnet->owner->name); - free(netstr); - } - syslog(LOG_DEBUG, _("End of subnet list.")); -cp +void dump_subnets(void) { + char netstr[MAXNETSTR]; + subnet_t *subnet; + avl_node_t *node; + + logger(LOG_DEBUG, "Subnet list:"); + + for(node = subnet_tree->head; node; node = node->next) { + subnet = node->data; + + if(!net2str(netstr, sizeof(netstr), subnet)) { + continue; + } + + logger(LOG_DEBUG, " %s owner %s", netstr, subnet->owner->name); + } + + logger(LOG_DEBUG, "End of subnet list."); }