2 ifconfig.c -- Generate platform specific interface configuration commands
3 Copyright (C) 2016 Guus Sliepen <guus@tinc-vpn.org>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
29 void ifconfig_header(FILE *out) {
30 fprintf(out, "#!/bin/sh\n");
34 void ifconfig_dhcp(FILE *out) {
35 fprintf(out, "dhclient -nw \"$INTERFACE\"\n");
38 void ifconfig_dhcp6(FILE *out) {
39 fprintf(out, "dhclient -6 -nw \"$INTERFACE\"\n");
42 void ifconfig_slaac(FILE *out) {
44 fprintf(out, "echo 1 >\"/proc/sys/net/ipv6/conf/$INTERFACE/accept_ra\"\n");
45 fprintf(out, "echo 1 >\"/proc/sys/net/ipv6/conf/$INTERFACE/autoconf\"\n");
47 fprintf(out, "rtsol \"$INTERFACE\" &\n");
51 bool ifconfig_footer(FILE *out) {
52 if(ftell(out) == start) {
53 fprintf(out, "echo 'Unconfigured tinc-up script, please edit '$0'!'\n\n#ifconfig $INTERFACE <your vpn IP address> netmask <netmask of whole VPN>\n");
57 fprintf(out, "ip link set \"$INTERFACE\" up\n");
59 fprintf(out, "ifconfig \"$INTERFACE\" up\n");
65 void ifconfig_header(FILE *out) {
69 void ifconfig_dhcp(FILE *out) {
70 fprintf(out, "netsh interface ipv4 set address \"%%INTERFACE%%\" dhcp\n");
73 void ifconfig_dhcp6(FILE *out) {
74 fprintf(stderr, "DHCPv6 requested, but not supported by tinc on this platform\n");
77 void ifconfig_slaac(FILE *out) {
81 bool ifconfig_footer(FILE *out) {
82 return ftell(out) != start;
86 static subnet_t ipv4, ipv6;
88 void ifconfig_address(FILE *out, const char *value) {
89 subnet_t address = {};
90 char address_str[MAXNETSTR];
91 if(!str2net(&address, value) || !net2str(address_str, sizeof address_str, &address)) {
92 fprintf(stderr, "Could not parse address in Ifconfig statement\n");
95 switch(address.type) {
96 case SUBNET_IPV4: ipv4 = address; break;
97 case SUBNET_IPV6: ipv6 = address; break;
100 #if defined(HAVE_LINUX)
101 switch(address.type) {
102 case SUBNET_MAC: fprintf(out, "ip link set \"$INTERFACE\" address %s\n", address_str); break;
103 case SUBNET_IPV4: fprintf(out, "ip addr replace %s dev \"$INTERFACE\"\n", address_str); break;
104 case SUBNET_IPV6: fprintf(out, "ip addr replace %s dev \"$INTERFACE\"\n", address_str); break;
107 #elif defined(HAVE_MINGW) || defined(HAVE_CYGWIN)
108 switch(address.type) {
109 case SUBNET_MAC: fprintf(out, "ip link set \"$INTERFACE\" address %s\n", address_str); break;
110 case SUBNET_IPV4: fprintf(out, "netsh inetface ipv4 set address \"$INTERFACE\" static %s\n", address_str); break;
111 case SUBNET_IPV6: fprintf(out, "netsh inetface ipv6 set address \"$INTERFACE\" static %s\n", address_str); break;
115 switch(address.type) {
116 case SUBNET_MAC: fprintf(out, "ifconfig \"$INTERFACE\" link %s\n", address_str); break;
117 case SUBNET_IPV4: fprintf(out, "ifconfig \"$INTERFACE\" %s\n", address_str); break;
118 case SUBNET_IPV6: fprintf(out, "ifconfig \"$INTERFACE\" inet6 %s\n", address_str); break;
124 void ifconfig_route(FILE *out, const char *value) {
125 subnet_t subnet = {}, gateway = {};
126 char subnet_str[MAXNETSTR] = "", gateway_str[MAXNETSTR] = "";
127 char *sep = strchr(value, ' ');
130 if(!str2net(&subnet, value) || !net2str(subnet_str, sizeof subnet_str, &subnet) || subnet.type == SUBNET_MAC) {
131 fprintf(stderr, "Could not parse subnet in Route statement\n");
135 if(!str2net(&gateway, sep) || !net2str(gateway_str, sizeof gateway_str, &gateway) || gateway.type != subnet.type) {
136 fprintf(stderr, "Could not parse gateway in Route statement\n");
139 char *slash = strchr(gateway_str, '/'); if(slash) *slash = 0;
141 #if defined(HAVE_LINUX)
143 switch(subnet.type) {
144 case SUBNET_IPV4: fprintf(out, "ip route add %s via %s dev \"$INTERFACE\"\n", subnet_str, gateway_str); break;
145 case SUBNET_IPV6: fprintf(out, "ip route add %s via %s dev \"$INTERFACE\"\n", subnet_str, gateway_str); break;
149 switch(subnet.type) {
150 case SUBNET_IPV4: fprintf(out, "ip route add %s dev \"$INTERFACE\"\n", subnet_str); break;
151 case SUBNET_IPV6: fprintf(out, "ip route add %s dev \"$INTERFACE\"\n", subnet_str); break;
155 #elif defined(HAVE_MINGW) || defined(HAVE_CYGWIN)
157 switch(subnet.type) {
158 case SUBNET_IPV4: fprintf(out, "netsh inetface ipv4 add route %s \"%%INTERFACE%%\" %s\n", subnet_str, gateway_str); break;
159 case SUBNET_IPV6: fprintf(out, "netsh inetface ipv6 add route %s \"%%INTERFACE%%\" %s\n", subnet_str, gateway_str); break;
163 switch(subnet.type) {
164 case SUBNET_IPV4: fprintf(out, "netsh inetface ipv4 add route %s \"%%INTERFACE%%\"\n", subnet_str); break;
165 case SUBNET_IPV6: fprintf(out, "netsh inetface ipv6 add route %s \"%%INTERFACE%%\"\n", subnet_str); break;
171 switch(subnet.type) {
174 fprintf(stderr, "Route requested but no Ifconfig\n");
177 net2str(gateway_str, sizeof gateway_str, &ipv4);
181 fprintf(stderr, "Route requested but no Ifconfig\n");
184 net2str(gateway_str, sizeof gateway_str, &ipv6);
188 char *slash = strchr(gateway_str, '/'); if(slash) *slash = 0;
191 switch(subnet.type) {
192 case SUBNET_IPV4: fprintf(out, "route add %s %s\n", subnet_str, gateway_str); break;
193 case SUBNET_IPV6: fprintf(out, "route add -inet6 %s %s\n", subnet_str, gateway_str); break;