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Allow choosing only IPv4 or IPv6 in server

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IPv6 might still allow IPv4 since V6_ONLY is not set by the server.
This commit is contained in:
Erik Ekman
2015-06-30 21:32:21 +02:00
parent e7d253b1c1
commit 4d03ee7786
3 changed files with 28 additions and 13 deletions
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22
src/iodined.c
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@@ -2290,7 +2290,8 @@ static void
print_usage() {
extern char *__progname;
fprintf(stderr, "Usage: %s [-v] [-h] [-c] [-s] [-f] [-D] [-u user] "
fprintf(stderr, "Usage: %s [-v] [-h] "
"[-4] [-6] [-c] [-s] [-f] [-D] [-u user] "
"[-t chrootdir] [-d device] [-m mtu] [-z context] "
"[-l ipv4 listen address] [-L ipv6 listen address] "
"[-p port] [-n external ip] [-b dnsport] "
@@ -2310,6 +2311,8 @@ help() {
print_usage();
fprintf(stderr, " -v to print version info and exit\n");
fprintf(stderr, " -h to print this help and exit\n");
fprintf(stderr, " -4 to listen only on IPv4\n");
fprintf(stderr, " -6 to listen only on IPv6\n");
fprintf(stderr, " -c to disable check of client IP/port on each request\n");
fprintf(stderr, " -s to skip creating and configuring the tun device, "
"which then has to be created manually\n");
@@ -2378,6 +2381,7 @@ main(int argc, char **argv)
char *context;
char *device;
char *pidfile;
int addrfamily;
struct dnsfd dns_fds;
int tun_fd;
@@ -2420,6 +2424,7 @@ main(int argc, char **argv)
port = 53;
ns_ip = INADDR_ANY;
ns_get_externalip = 0;
addrfamily = AF_UNSPEC;
check_ip = 1;
skipipconfig = 0;
debug = 0;
@@ -2449,8 +2454,14 @@ main(int argc, char **argv)
srand(time(NULL));
fw_query_init();
while ((choice = getopt(argc, argv, "vcsfhDu:t:d:m:l:L:p:n:b:P:z:F:i:")) != -1) {
while ((choice = getopt(argc, argv, "46vcsfhDu:t:d:m:l:L:p:n:b:P:z:F:i:")) != -1) {
switch(choice) {
case '4':
addrfamily = AF_INET;
break;
case '6':
addrfamily = AF_INET6;
break;
case 'v':
version();
break;
@@ -2669,11 +2680,14 @@ main(int argc, char **argv)
dns_fds.v4fd = SD_LISTEN_FDS_START;
} else {
#endif
if ((dns_fds.v4fd = open_dns(&dns4addr, dns4addr_len)) < 0) {
if ((addrfamily == AF_UNSPEC || addrfamily == AF_INET) &&
(dns_fds.v4fd = open_dns(&dns4addr, dns4addr_len)) < 0) {
retval = 1;
goto cleanup;
}
if ((dns_fds.v6fd = open_dns(&dns6addr, dns6addr_len)) < 0) {
if ((addrfamily == AF_UNSPEC || addrfamily == AF_INET6) &&
(dns_fds.v6fd = open_dns(&dns6addr, dns6addr_len)) < 0) {
retval = 1;
goto cleanup;
}