/*
subnet.c -- handle subnet lookups and lists
- Copyright (C) 2000-2009 Guus Sliepen <guus@tinc-vpn.org>,
+ Copyright (C) 2000-2010 Guus Sliepen <guus@tinc-vpn.org>,
2000-2005 Ivo Timmermans
This program is free software; you can redistribute it and/or modify
#include "system.h"
-#include "avl_tree.h"
+#include "splay_tree.h"
+#include "control_common.h"
#include "device.h"
#include "logger.h"
#include "net.h"
/* lists type of subnet */
-avl_tree_t *subnet_tree;
+splay_tree_t *subnet_tree;
/* Subnet lookup cache */
static bool cache_mac_valid[2];
static int cache_mac_slot;
-void subnet_cache_flush() {
+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;
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));
+ result = memcmp(&a->net.mac.address, &b->net.mac.address, sizeof a->net.mac.address);
if(result)
return result;
case SUBNET_IPV6:
return subnet_compare_ipv6(a, b);
default:
- logger(LOG_ERR, "subnet_compare() was called with unknown subnet type %d, exitting!",
+ logger(DEBUG_ALWAYS, LOG_ERR, "subnet_compare() was called with unknown subnet type %d, exitting!",
a->type);
exit(0);
}
/* Initialising trees */
void init_subnets(void) {
- subnet_tree = avl_alloc_tree((avl_compare_t) subnet_compare, (avl_action_t) free_subnet);
+ subnet_tree = splay_alloc_tree((splay_compare_t) subnet_compare, (splay_action_t) free_subnet);
subnet_cache_flush();
}
void exit_subnets(void) {
- avl_delete_tree(subnet_tree);
+ splay_delete_tree(subnet_tree);
}
-avl_tree_t *new_subnet_tree(void) {
- return avl_alloc_tree((avl_compare_t) subnet_compare, NULL);
+splay_tree_t *new_subnet_tree(void) {
+ return splay_alloc_tree((splay_compare_t) subnet_compare, NULL);
}
-void free_subnet_tree(avl_tree_t *subnet_tree) {
- avl_delete_tree(subnet_tree);
+void free_subnet_tree(splay_tree_t *subnet_tree) {
+ splay_delete_tree(subnet_tree);
}
/* Allocating and freeing space for subnets */
void subnet_add(node_t *n, subnet_t *subnet) {
subnet->owner = n;
- avl_insert(subnet_tree, subnet);
- avl_insert(n->subnet_tree, subnet);
+ splay_insert(subnet_tree, subnet);
+ splay_insert(n->subnet_tree, subnet);
subnet_cache_flush();
}
void subnet_del(node_t *n, subnet_t *subnet) {
- avl_delete(n->subnet_tree, subnet);
- avl_delete(subnet_tree, subnet);
+ splay_delete(n->subnet_tree, subnet);
+ splay_delete(subnet_tree, subnet);
subnet_cache_flush();
}
return true;
}
+ // IPv6 short form
+ if(strstr(subnetstr, "::")) {
+ const char *p;
+ char *q;
+ int colons = 0;
+
+ // Count number of colons
+ for(p = subnetstr; *p; p++)
+ if(*p == ':')
+ colons++;
+
+ if(colons > 7)
+ return false;
+
+ // Scan numbers before the double colon
+ p = subnetstr;
+ for(i = 0; i < colons; i++) {
+ if(*p == ':')
+ break;
+ x[i] = strtoul(p, &q, 0x10);
+ if(!q || p == q || *q != ':')
+ return false;
+ p = ++q;
+ }
+
+ p++;
+ colons -= i;
+ if(!i) {
+ p++;
+ colons--;
+ }
+
+ if(!*p || *p == '/' || *p == '#')
+ colons--;
+
+ // Fill in the blanks
+ for(; i < 8 - colons; i++)
+ x[i] = 0;
+
+ // Scan the remaining numbers
+ for(; i < 8; i++) {
+ x[i] = strtoul(p, &q, 0x10);
+ if(!q || p == q)
+ return false;
+ if(i == 7) {
+ p = q;
+ break;
+ }
+ if(*q != ':')
+ return false;
+ p = ++q;
+ }
+
+ l = 128;
+ if(*p == '/')
+ sscanf(p, "/%d#%d", &l, &weight);
+ else if(*p == '#')
+ sscanf(p, "#%d", &weight);
+
+ if(l < 0 || l > 128)
+ return false;
+
+ subnet->type = SUBNET_IPV6;
+ subnet->net.ipv6.prefixlength = l;
+ subnet->weight = weight;
+
+ for(i = 0; i < 8; i++)
+ subnet->net.ipv6.address.x[i] = htons(x[i]);
+
+ return true;
+ }
+
return false;
}
bool net2str(char *netstr, int len, const subnet_t *subnet) {
if(!netstr || !subnet) {
- logger(LOG_ERR, "net2str() was called with netstr=%p, subnet=%p!\n", netstr, subnet);
+ logger(DEBUG_ALWAYS, LOG_ERR, "net2str() was called with netstr=%p, subnet=%p!", netstr, subnet);
return false;
}
break;
default:
- logger(LOG_ERR,
+ logger(DEBUG_ALWAYS, LOG_ERR,
"net2str() was called with unknown subnet type %d, exiting!",
subnet->type);
exit(0);
/* Subnet lookup routines */
subnet_t *lookup_subnet(const node_t *owner, const subnet_t *subnet) {
- return avl_search(owner->subnet_tree, subnet);
+ return splay_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;
+ splay_node_t *n;
int i;
// Check if this address is cached
subnet_t *lookup_subnet_ipv4(const ipv4_t *address) {
subnet_t *p, *r = NULL;
- avl_node_t *n;
+ splay_node_t *n;
int i;
// Check if this address is cached
subnet_t *lookup_subnet_ipv6(const ipv6_t *address) {
subnet_t *p, *r = NULL;
- avl_node_t *n;
+ splay_node_t *n;
int i;
// Check if this address is cached
}
void subnet_update(node_t *owner, subnet_t *subnet, bool up) {
- avl_node_t *node;
+ splay_node_t *node;
int i;
- char *envp[9] = {0};
+ char *envp[9] = {NULL};
char netstr[MAXNETSTR];
char *name, *address, *port;
char empty[] = "";
// 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);
}
name = up ? "subnet-up" : "subnet-down";
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 + 7, '#');
+ char *weight = strchr(netstr, '#');
if(weight)
*weight++ = 0;
else
execute_script(name, envp);
}
} else {
- if(net2str(netstr + 7, sizeof netstr - 7, subnet)) {
+ if(net2str(netstr, sizeof netstr, subnet)) {
// Strip the weight from the subnet, and put it in its own environment variable
- char *weight = strchr(netstr + 7, '#');
+ char *weight = strchr(netstr, '#');
if(weight)
*weight++ = 0;
else
}
}
- for(i = 0; envp[i] && i < 9; i++)
+ for(i = 0; envp[i] && i < 8; i++)
free(envp[i]);
}
-void dump_subnets(void) {
+bool dump_subnets(connection_t *c) {
char netstr[MAXNETSTR];
subnet_t *subnet;
- avl_node_t *node;
-
- logger(LOG_DEBUG, "Subnet list:");
+ splay_node_t *node;
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);
+ send_request(c, "%d %d %s owner %s",
+ CONTROL, REQ_DUMP_SUBNETS,
+ netstr, subnet->owner->name);
}
- logger(LOG_DEBUG, "End of subnet list.");
+ return send_request(c, "%d %d", CONTROL, REQ_DUMP_SUBNETS);
}
projects / tinc / blobdiff