2 ifconfig.c -- Generate platform specific interface configuration commands
3 Copyright (C) 2016-2018 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 \"$INTERFACE\" up\n");
65 void ifconfig_header(FILE *out) {
69 void ifconfig_dhcp(FILE *out) {
70 fprintf(out, "netsh interface ipv4 set address \"%%INTERFACE%%\" dhcp\n");
73 void ifconfig_dhcp6(FILE *out) {
75 fprintf(stderr, "DHCPv6 requested, but not supported by tinc on this platform\n");
78 void ifconfig_slaac(FILE *out) {
83 bool ifconfig_footer(FILE *out) {
84 return ftell(out) != start;
88 static subnet_t ipv4, ipv6;
90 void ifconfig_address(FILE *out, const char *value) {
91 subnet_t address = {0};
92 char address_str[MAXNETSTR];
94 if(!str2net(&address, value) || !net2str(address_str, sizeof(address_str), &address)) {
95 fprintf(stderr, "Could not parse address in Ifconfig statement\n");
99 switch(address.type) {
112 #if defined(HAVE_LINUX)
114 switch(address.type) {
116 fprintf(out, "ip link set \"$INTERFACE\" address %s\n", address_str);
120 fprintf(out, "ip addr replace %s dev \"$INTERFACE\"\n", address_str);
124 fprintf(out, "ip addr replace %s dev \"$INTERFACE\"\n", address_str);
131 #elif defined(HAVE_WINDOWS)
133 switch(address.type) {
135 fprintf(out, "ip link set \"$INTERFACE\" address %s\n", address_str);
139 fprintf(out, "netsh interface ipv4 set address \"%%INTERFACE%%\" static %s\n", address_str);
143 fprintf(out, "netsh interface ipv6 set address \"%%INTERFACE%%\" %s\n", address_str);
152 switch(address.type) {
154 fprintf(out, "ifconfig \"$INTERFACE\" link %s\n", address_str);
158 fprintf(out, "ifconfig \"$INTERFACE\" %s\n", address_str);
162 fprintf(out, "ifconfig \"$INTERFACE\" inet6 %s\n", address_str);
172 void ifconfig_route(FILE *out, const char *value) {
173 subnet_t subnet = {0}, gateway = {0};
174 char subnet_str[MAXNETSTR] = "", gateway_str[MAXNETSTR] = "";
175 char *sep = strchr(value, ' ');
181 if(!str2net(&subnet, value) || !net2str(subnet_str, sizeof(subnet_str), &subnet) || subnet.type == SUBNET_MAC) {
182 fprintf(stderr, "Could not parse subnet in Route statement\n");
187 if(!str2net(&gateway, sep) || !net2str(gateway_str, sizeof(gateway_str), &gateway) || gateway.type != subnet.type) {
188 fprintf(stderr, "Could not parse gateway in Route statement\n");
192 char *slash = strchr(gateway_str, '/');
199 #if defined(HAVE_LINUX)
202 switch(subnet.type) {
204 fprintf(out, "ip route add %s via %s dev \"$INTERFACE\" onlink\n", subnet_str, gateway_str);
208 fprintf(out, "ip route add %s via %s dev \"$INTERFACE\" onlink\n", subnet_str, gateway_str);
215 switch(subnet.type) {
217 fprintf(out, "ip route add %s dev \"$INTERFACE\"\n", subnet_str);
221 fprintf(out, "ip route add %s dev \"$INTERFACE\"\n", subnet_str);
229 #elif defined(HAVE_WINDOWS)
232 switch(subnet.type) {
234 fprintf(out, "netsh interface ipv4 add route %s \"%%INTERFACE%%\" %s\n", subnet_str, gateway_str);
238 fprintf(out, "netsh interface ipv6 add route %s \"%%INTERFACE%%\" %s\n", subnet_str, gateway_str);
245 switch(subnet.type) {
247 fprintf(out, "netsh interface ipv4 add route %s \"%%INTERFACE%%\"\n", subnet_str);
251 fprintf(out, "netsh interface ipv6 add route %s \"%%INTERFACE%%\"\n", subnet_str);
262 switch(subnet.type) {
265 fprintf(stderr, "Route requested but no Ifconfig\n");
269 net2str(gateway_str, sizeof(gateway_str), &ipv4);
274 fprintf(stderr, "Route requested but no Ifconfig\n");
278 net2str(gateway_str, sizeof(gateway_str), &ipv6);
285 char *slash = strchr(gateway_str, '/');
292 switch(subnet.type) {
294 fprintf(out, "route add %s %s\n", subnet_str, gateway_str);
298 fprintf(out, "route add -inet6 %s %s\n", subnet_str, gateway_str);