X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fnet_setup.c;h=c4337ccc35021a702bc58b0dfedbd1f702d78cb0;hp=cad84ccb26d2865157d0289e1de359eda5284ecc;hb=e838289683c0039fac0ae6172d40b4177c17911b;hpb=9fed0ec34b9208611a7e96a595f23fa04e60a5c0 diff --git a/src/net_setup.c b/src/net_setup.c index cad84ccb..c4337ccc 100644 --- a/src/net_setup.c +++ b/src/net_setup.c @@ -3,6 +3,7 @@ Copyright (C) 1998-2005 Ivo Timmermans, 2000-2010 Guus Sliepen 2006 Scott Lamb + 2010 Brandon Black 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 @@ -112,11 +113,14 @@ bool read_rsa_public_key(connection_t *c) { xasprintf(&fname, "%s/hosts/%s", confbase, c->name); fp = fopen(fname, "r"); - if(fp) { - c->rsa_key = PEM_read_RSAPublicKey(fp, &c->rsa_key, NULL, NULL); - fclose(fp); + if(!fp) { + logger(LOG_ERR, "Error reading RSA public key file `%s': %s", fname, strerror(errno)); + free(fname); + return; } + c->rsa_key = PEM_read_RSAPublicKey(fp, &c->rsa_key, NULL, NULL); + fclose(fp); free(fname); if(c->rsa_key) @@ -127,12 +131,15 @@ bool read_rsa_public_key(connection_t *c) { xasprintf(&fname, "%s/hosts/%s", confbase, c->name); fp = fopen(fname, "r"); - if(fp) { - c->rsa_key = PEM_read_RSA_PUBKEY(fp, &c->rsa_key, NULL, NULL); -// RSA_blinding_on(c->rsa_key, NULL); - fclose(fp); + if(!fp) { + logger(LOG_ERR, "Error reading RSA public key file `%s': %s", fname, strerror(errno)); + free(fname); + return; } + c->rsa_key = PEM_read_RSA_PUBKEY(fp, &c->rsa_key, NULL, NULL); +// RSA_blinding_on(c->rsa_key, NULL); + fclose(fp); free(fname); if(c->rsa_key) @@ -143,13 +150,13 @@ bool read_rsa_public_key(connection_t *c) { return false; } -bool read_rsa_private_key(void) { +static bool read_rsa_private_key(void) { FILE *fp; char *fname, *key, *pubkey; struct stat s; if(get_config_string(lookup_config(config_tree, "PrivateKey"), &key)) { - if(!get_config_string(lookup_config(myself->connection->config_tree, "PublicKey"), &pubkey)) { + if(!get_config_string(lookup_config(config_tree, "PublicKey"), &pubkey)) { logger(LOG_ERR, "PrivateKey used but no PublicKey found!"); return false; } @@ -204,14 +211,14 @@ bool read_rsa_private_key(void) { /* Read Subnets from all host config files */ -static void load_all_subnets(void) { +void load_all_subnets(void) { DIR *dir; struct dirent *ent; char *dname; char *fname; avl_tree_t *config_tree; config_t *cfg; - subnet_t *s; + subnet_t *s, *s2; node_t *n; bool result; @@ -228,9 +235,6 @@ static void load_all_subnets(void) { continue; n = lookup_node(ent->d_name); - if(n) - continue; - #ifdef _DIRENT_HAVE_D_TYPE //if(ent->d_type != DT_REG) // continue; @@ -243,15 +247,21 @@ static void load_all_subnets(void) { if(!result) continue; - n = new_node(); - n->name = xstrdup(ent->d_name); - node_add(n); + if(!n) { + n = new_node(); + n->name = xstrdup(ent->d_name); + node_add(n); + } for(cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) { if(!get_config_subnet(cfg, &s)) continue; - subnet_add(n, s); + if((s2 = lookup_subnet(n, s))) { + s2->expires = -1; + } else { + subnet_add(n, s); + } } exit_configuration(&config_tree); @@ -263,19 +273,20 @@ static void load_all_subnets(void) { /* Configure node_t myself and set up the local sockets (listen only) */ -bool setup_myself(void) { +static bool setup_myself(void) { config_t *cfg; subnet_t *subnet; char *name, *hostname, *mode, *afname, *cipher, *digest; + char *fname = NULL; char *address = NULL; char *envp[5]; struct addrinfo *ai, *aip, hint = {0}; bool choice; int i, err; + int replaywin_int; myself = new_node(); myself->connection = new_connection(); - init_configuration(&myself->connection->config_tree); myself->hostname = xstrdup("MYSELF"); myself->connection->hostname = xstrdup("MYSELF"); @@ -296,22 +307,30 @@ bool setup_myself(void) { myself->name = name; myself->connection->name = xstrdup(name); - - if(!read_connection_config(myself->connection)) { - logger(LOG_ERR, "Cannot open host configuration file for myself!"); - return false; - } + xasprintf(&fname, "%s/hosts/%s", confbase, name); + read_config_options(config_tree, name); + read_config_file(config_tree, fname); + free(fname); if(!read_rsa_private_key()) return false; - if(!get_config_string(lookup_config(config_tree, "Port"), &myport) - && !get_config_string(lookup_config(myself->connection->config_tree, "Port"), &myport)) + if(!get_config_string(lookup_config(config_tree, "Port"), &myport)) myport = xstrdup("655"); + if(!atoi(myport)) { + struct addrinfo *ai = str2addrinfo("localhost", myport, SOCK_DGRAM); + sockaddr_t sa; + if(!ai || !ai->ai_addr) + return false; + free(myport); + memcpy(&sa, ai->ai_addr, ai->ai_addrlen); + sockaddr2str(&sa, NULL, &myport); + } + /* Read in all the subnets specified in the host configuration file */ - cfg = lookup_config(myself->connection->config_tree, "Subnet"); + cfg = lookup_config(config_tree, "Subnet"); while(cfg) { if(!get_config_subnet(cfg, &subnet)) @@ -319,7 +338,7 @@ bool setup_myself(void) { subnet_add(myself, subnet); - cfg = lookup_config_next(myself->connection->config_tree, cfg); + cfg = lookup_config_next(config_tree, cfg); } /* Check some options */ @@ -330,16 +349,13 @@ bool setup_myself(void) { if(get_config_bool(lookup_config(config_tree, "TCPOnly"), &choice) && choice) myself->options |= OPTION_TCPONLY; - if(get_config_bool(lookup_config(myself->connection->config_tree, "IndirectData"), &choice) && choice) - myself->options |= OPTION_INDIRECT; - - if(get_config_bool(lookup_config(myself->connection->config_tree, "TCPOnly"), &choice) && choice) - myself->options |= OPTION_TCPONLY; - if(myself->options & OPTION_TCPONLY) myself->options |= OPTION_INDIRECT; + get_config_bool(lookup_config(config_tree, "DirectOnly"), &directonly); + get_config_bool(lookup_config(config_tree, "StrictSubnets"), &strictsubnets); get_config_bool(lookup_config(config_tree, "TunnelServer"), &tunnelserver); + strictsubnets |= tunnelserver; if(get_config_string(lookup_config(config_tree, "Mode"), &mode)) { if(!strcasecmp(mode, "router")) @@ -353,18 +369,29 @@ bool setup_myself(void) { return false; } free(mode); - } else - routing_mode = RMODE_ROUTER; + } + + if(get_config_string(lookup_config(config_tree, "Forwarding"), &mode)) { + if(!strcasecmp(mode, "off")) + forwarding_mode = FMODE_OFF; + else if(!strcasecmp(mode, "internal")) + forwarding_mode = FMODE_INTERNAL; + else if(!strcasecmp(mode, "kernel")) + forwarding_mode = FMODE_KERNEL; + else { + logger(LOG_ERR, "Invalid forwarding mode!"); + return false; + } + free(mode); + } choice = true; - get_config_bool(lookup_config(myself->connection->config_tree, "PMTUDiscovery"), &choice); get_config_bool(lookup_config(config_tree, "PMTUDiscovery"), &choice); if(choice) myself->options |= OPTION_PMTU_DISCOVERY; choice = true; get_config_bool(lookup_config(config_tree, "ClampMSS"), &choice); - get_config_bool(lookup_config(myself->connection->config_tree, "ClampMSS"), &choice); if(choice) myself->options |= OPTION_CLAMP_MSS; @@ -386,6 +413,28 @@ bool setup_myself(void) { } else maxtimeout = 900; + if(get_config_int(lookup_config(config_tree, "UDPRcvBuf"), &udp_rcvbuf)) { + if(udp_rcvbuf <= 0) { + logger(LOG_ERR, "UDPRcvBuf cannot be negative!"); + return false; + } + } + + if(get_config_int(lookup_config(config_tree, "UDPSndBuf"), &udp_sndbuf)) { + if(udp_sndbuf <= 0) { + logger(LOG_ERR, "UDPSndBuf cannot be negative!"); + return false; + } + } + + if(get_config_int(lookup_config(config_tree, "ReplayWindow"), &replaywin_int)) { + if(replaywin_int < 0) { + logger(LOG_ERR, "ReplayWindow cannot be negative!"); + return false; + } + replaywin = (unsigned)replaywin_int; + } + if(get_config_string(lookup_config(config_tree, "AddressFamily"), &afname)) { if(!strcasecmp(afname, "IPv4")) addressfamily = AF_INET; @@ -405,7 +454,7 @@ bool setup_myself(void) { /* Generate packet encryption key */ if(get_config_string - (lookup_config(myself->connection->config_tree, "Cipher"), &cipher)) { + (lookup_config(config_tree, "Cipher"), &cipher)) { if(!strcasecmp(cipher, "none")) { myself->incipher = NULL; } else { @@ -433,7 +482,7 @@ bool setup_myself(void) { /* Check if we want to use message authentication codes... */ - if(get_config_string(lookup_config(myself->connection->config_tree, "Digest"), &digest)) { + if(get_config_string(lookup_config(config_tree, "Digest"), &digest)) { if(!strcasecmp(digest, "none")) { myself->indigest = NULL; } else { @@ -449,7 +498,7 @@ bool setup_myself(void) { myself->connection->outdigest = EVP_sha1(); - if(get_config_int(lookup_config(myself->connection->config_tree, "MACLength"), &myself->inmaclength)) { + if(get_config_int(lookup_config(config_tree, "MACLength"), &myself->inmaclength)) { if(myself->indigest) { if(myself->inmaclength > myself->indigest->md_size) { logger(LOG_ERR, "MAC length exceeds size of digest!"); @@ -466,7 +515,7 @@ bool setup_myself(void) { /* Compression */ - if(get_config_int(lookup_config(myself->connection->config_tree, "Compression"), &myself->incompression)) { + if(get_config_int(lookup_config(config_tree, "Compression"), &myself->incompression)) { if(myself->incompression < 0 || myself->incompression > 11) { logger(LOG_ERR, "Bogus compression level!"); return false; @@ -485,7 +534,7 @@ bool setup_myself(void) { graph(); - if(tunnelserver) + if(strictsubnets) load_all_subnets(); /* Open device */