/*
subnet.c -- handle subnet lookups and lists
- Copyright (C) 2000-2013 Guus Sliepen <guus@tinc-vpn.org>,
+ Copyright (C) 2000-2017 Guus Sliepen <guus@tinc-vpn.org>,
2000-2005 Ivo Timmermans
This program is free software; you can redistribute it and/or modify
/* Subnet lookup cache */
-hash_t *ipv4_cache;
-hash_t *ipv6_cache;
-hash_t *mac_cache;
+static hash_t *ipv4_cache;
+static hash_t *ipv6_cache;
+static hash_t *mac_cache;
void subnet_cache_flush(void) {
hash_clear(ipv4_cache);
// Prepare environment variables to be passed to the script
- char *envp[10] = {NULL};
- xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
- xasprintf(&envp[1], "DEVICE=%s", device ? : "");
- xasprintf(&envp[2], "INTERFACE=%s", iface ? : "");
- xasprintf(&envp[3], "NODE=%s", owner->name);
+ environment_t env;
+ environment_init(&env);
+ environment_add(&env, "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);
+ environment_add(&env, "REMOTEADDRESS=%s", address);
+ environment_add(&env, "REMOTEPORT=%s", port);
free(port);
free(address);
}
- xasprintf(&envp[8], "NAME=%s", myself->name);
+ int env_subnet = environment_add(&env, NULL);
+ int env_weight = environment_add(&env, NULL);
name = up ? "subnet-up" : "subnet-down";
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);
+ environment_update(&env, env_subnet, "SUBNET=%s", netstr);
+ environment_update(&env, env_weight, "WEIGHT=%s", weight);
+
+ execute_script(name, &env);
}
} else {
if(net2str(netstr, sizeof netstr, subnet)) {
weight = empty;
// Prepare the SUBNET and WEIGHT variables
- xasprintf(&envp[4], "SUBNET=%s", netstr);
- xasprintf(&envp[5], "WEIGHT=%s", weight);
+ environment_update(&env, env_subnet, "SUBNET=%s", netstr);
+ environment_update(&env, env_weight, "WEIGHT=%s", weight);
- execute_script(name, envp);
+ execute_script(name, &env);
}
}
- for(int i = 0; envp[i] && i < 9; i++)
- free(envp[i]);
+ environment_exit(&env);
}
bool dump_subnets(connection_t *c) {
send_request(c, "%d %d %s %s",
CONTROL, REQ_DUMP_SUBNETS,
- netstr, subnet->owner->name);
+ netstr, subnet->owner ? subnet->owner->name : "(broadcast)");
}
return send_request(c, "%d %d", CONTROL, REQ_DUMP_SUBNETS);