X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fnet.c;h=a04ba005b67fc616e8291a4f80dddb9ff9c50af8;hp=da5be4e60b824e141d492c4ea944223e863dbb6c;hb=4708f2c89edea4be2562256544cf35309cf1ea89;hpb=a227843b739d279b63adcf3736ebb03d856080c4 diff --git a/src/net.c b/src/net.c index da5be4e6..a04ba005 100644 --- a/src/net.c +++ b/src/net.c @@ -1,7 +1,8 @@ /* net.c -- most of the network code Copyright (C) 1998-2005 Ivo Timmermans, - 2000-2009 Guus Sliepen + 2000-2010 Guus Sliepen + 2006 Scott Lamb 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 @@ -52,7 +53,7 @@ static void purge(void) { edge_t *e; subnet_t *s; - ifdebug(PROTOCOL) logger(LOG_DEBUG, _("Purging unreachable nodes")); + ifdebug(PROTOCOL) logger(LOG_DEBUG, "Purging unreachable nodes"); /* Remove all edges and subnets owned by unreachable nodes. */ @@ -61,15 +62,15 @@ static void purge(void) { n = nnode->data; if(!n->status.reachable) { - ifdebug(SCARY_THINGS) logger(LOG_DEBUG, _("Purging node %s (%s)"), n->name, + ifdebug(SCARY_THINGS) logger(LOG_DEBUG, "Purging node %s (%s)", n->name, n->hostname); for(snode = n->subnet_tree->head; snode; snode = snext) { snext = snode->next; s = snode->data; - if(!tunnelserver) - send_del_subnet(broadcast, s); - subnet_del(n, s); + send_del_subnet(broadcast, s); + if(!strictsubnets) + subnet_del(n, s); } for(enode = n->edge_tree->head; enode; enode = enext) { @@ -97,7 +98,8 @@ static void purge(void) { break; } - if(!enode) + if(!enode && (!strictsubnets || !n->subnet_tree->head)) + /* in strictsubnets mode do not delete nodes with subnets */ node_del(n); } } @@ -160,7 +162,7 @@ void terminate_connection(connection_t *c, bool report) { if(c->status.remove) return; - ifdebug(CONNECTIONS) logger(LOG_NOTICE, _("Closing connection with %s (%s)"), + ifdebug(CONNECTIONS) logger(LOG_NOTICE, "Closing connection with %s (%s)", c->name, c->hostname); c->status.remove = true; @@ -228,7 +230,7 @@ static void check_dead_connections(void) { if(c->last_ping_time + pingtimeout < now) { if(c->status.active) { if(c->status.pinged) { - ifdebug(CONNECTIONS) logger(LOG_INFO, _("%s (%s) didn't respond to PING in %ld seconds"), + ifdebug(CONNECTIONS) logger(LOG_INFO, "%s (%s) didn't respond to PING in %ld seconds", c->name, c->hostname, now - c->last_ping_time); c->status.timeout = true; terminate_connection(c, true); @@ -237,12 +239,12 @@ static void check_dead_connections(void) { } } else { if(c->status.remove) { - logger(LOG_WARNING, _("Old connection_t for %s (%s) status %04x still lingering, deleting..."), + logger(LOG_WARNING, "Old connection_t for %s (%s) status %04x still lingering, deleting...", c->name, c->hostname, bitfield_to_int(&c->status, sizeof c->status)); connection_del(c); continue; } - ifdebug(CONNECTIONS) logger(LOG_WARNING, _("Timeout from %s (%s) during authentication"), + ifdebug(CONNECTIONS) logger(LOG_WARNING, "Timeout from %s (%s) during authentication", c->name, c->hostname); if(c->status.connecting) { c->status.connecting = false; @@ -257,7 +259,7 @@ static void check_dead_connections(void) { if(c->outbuflen > 0 && c->last_flushed_time + pingtimeout < now) { if(c->status.active) { ifdebug(CONNECTIONS) logger(LOG_INFO, - _("%s (%s) could not flush for %ld seconds (%d bytes remaining)"), + "%s (%s) could not flush for %ld seconds (%d bytes remaining)", c->name, c->hostname, now - c->last_flushed_time, c->outbuflen); c->status.timeout = true; terminate_connection(c, true); @@ -301,8 +303,8 @@ static void check_network_activity(fd_set * readset, fd_set * writeset) { finish_connecting(c); else { ifdebug(CONNECTIONS) logger(LOG_DEBUG, - _("Error while connecting to %s (%s): %s"), - c->name, c->hostname, strerror(result)); + "Error while connecting to %s (%s): %s", + c->name, c->hostname, sockstrerror(result)); closesocket(c->socket); do_outgoing_connection(c); continue; @@ -368,17 +370,15 @@ int main_loop(void) { #endif if(r < 0) { - if(errno != EINTR && errno != EAGAIN) { - logger(LOG_ERR, _("Error while waiting for input: %s"), - strerror(errno)); + if(!sockwouldblock(sockerrno)) { + logger(LOG_ERR, "Error while waiting for input: %s", sockstrerror(sockerrno)); dump_connections(); return 1; } - - continue; } - check_network_activity(&readset, &writeset); + if(r > 0) + check_network_activity(&readset, &writeset); if(do_purge) { purge(); @@ -402,7 +402,7 @@ int main_loop(void) { avl_node_t *node; node_t *n; - ifdebug(STATUS) logger(LOG_INFO, _("Expiring symmetric keys")); + ifdebug(STATUS) logger(LOG_INFO, "Expiring symmetric keys"); for(node = node_tree->head; node; node = node->next) { n = node->data; @@ -418,8 +418,13 @@ int main_loop(void) { } if(sigalrm) { - logger(LOG_INFO, _("Flushing event queue")); + avl_node_t *node; + logger(LOG_INFO, "Flushing event queue"); expire_events(); + for(node = connection_tree->head; node; node = node->next) { + connection_t *c = node->data; + send_ping(c); + } sigalrm = false; } @@ -430,7 +435,7 @@ int main_loop(void) { if(sighup) { connection_t *c; - avl_node_t *node; + avl_node_t *node, *next; char *fname; struct stat s; @@ -442,10 +447,35 @@ int main_loop(void) { init_configuration(&config_tree); if(!read_server_config()) { - logger(LOG_ERR, _("Unable to reread configuration file, exitting.")); + logger(LOG_ERR, "Unable to reread configuration file, exitting."); return 1; } + /* Cancel non-active outgoing connections */ + + for(node = connection_tree->head; node; node = next) { + next = node->next; + c = node->data; + + c->outgoing = NULL; + + if(c->status.connecting) { + terminate_connection(c, false); + connection_del(c); + } + } + + /* Wipe list of outgoing connections */ + + for(list_node_t *node = outgoing_list->head; node; node = node->next) { + outgoing_t *outgoing = node->data; + + if(outgoing->event) + event_del(outgoing->event); + } + + list_delete_list(outgoing_list); + /* Close connections to hosts that have a changed or deleted host config file */ for(node = connection_tree->head; node; node = node->next) { @@ -459,6 +489,36 @@ int main_loop(void) { last_config_check = now; + /* If StrictSubnet is set, expire deleted Subnets and read new ones in */ + + if(strictsubnets) { + subnet_t *subnet; + + for(node = subnet_tree->head; node; node = node->next) { + subnet = node->data; + subnet->expires = 1; + } + + load_all_subnets(); + + for(node = subnet_tree->head; node; node = next) { + next = node->next; + subnet = node->data; + if(subnet->expires == 1) { + send_del_subnet(broadcast, subnet); + if(subnet->owner->status.reachable) + subnet_update(subnet->owner, subnet, false); + subnet_del(subnet->owner, subnet); + } else if(subnet->expires == -1) { + subnet->expires = 0; + } else { + send_add_subnet(broadcast, subnet); + if(subnet->owner->status.reachable) + subnet_update(subnet->owner, subnet, true); + } + } + } + /* Try to make outgoing connections */ try_outgoing_connections();