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add option to bind socket to specified interface (e.g. localhost) only
author
Michael Gernoth
<michael@gernoth.net>
Sat, 8 Jun 2013 21:15:31 +0000
(23:15 +0200)
committer
Michael Gernoth
<michael@gernoth.net>
Sat, 8 Jun 2013 21:15:31 +0000
(23:15 +0200)
hmland.c
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diff --git
a/hmland.c
b/hmland.c
index 24fa34e4c28925c674e6871fad856fecfc2eac2c..c3981ab4e912f8f14298f09b84b33e479817793a 100644
(file)
--- a/
hmland.c
+++ b/
hmland.c
@@
-379,7
+379,7
@@
static int comm(int fd_in, int fd_out, int master_socket)
return 1;
}
return 1;
}
-static int socket_server(int port, int daemon)
+static int socket_server(
char *iface,
int port, int daemon)
{
struct sigaction sact;
struct sockaddr_in sin;
{
struct sigaction sact;
struct sockaddr_in sin;
@@
-423,7
+423,14
@@
static int socket_server(int port, int daemon)
memset(&sin, 0, sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_port = htons(port);
memset(&sin, 0, sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_port = htons(port);
- sin.sin_addr.s_addr = htonl(INADDR_ANY);
+ if (!iface) {
+ sin.sin_addr.s_addr = htonl(INADDR_ANY);
+ } else {
+ if (inet_pton(AF_INET, iface, &(sin.sin_addr.s_addr)) != 1) {
+ perror("inet_ntop");
+ return EXIT_FAILURE;
+ }
+ }
if (bind(sock, (struct sockaddr*)&sin, sizeof(sin)) == -1) {
perror("Can't bind socket");
if (bind(sock, (struct sockaddr*)&sin, sizeof(sin)) == -1) {
perror("Can't bind socket");
@@
-494,6
+501,7
@@
void hmlan_syntax(char *prog)
fprintf(stderr, "\t-d\tdaemon mode\n");
fprintf(stderr, "\t-h\tthis help\n");
fprintf(stderr, "\t-i\tinteractive mode (connect HM-CFG-USB to terminal)\n");
fprintf(stderr, "\t-d\tdaemon mode\n");
fprintf(stderr, "\t-h\tthis help\n");
fprintf(stderr, "\t-i\tinteractive mode (connect HM-CFG-USB to terminal)\n");
+ fprintf(stderr, "\t-l ip\tlisten on given IP address only (for example 127.0.0.1)\n");
fprintf(stderr, "\t-p n\tlisten on port n (default 1000)\n");
fprintf(stderr, "\t-v\tverbose mode\n");
fprintf(stderr, "\t-p n\tlisten on port n (default 1000)\n");
fprintf(stderr, "\t-v\tverbose mode\n");
@@
-502,12
+510,13
@@
void hmlan_syntax(char *prog)
int main(int argc, char **argv)
{
int port = 1000;
int main(int argc, char **argv)
{
int port = 1000;
+ char *iface = NULL;
int interactive = 0;
int daemon = 0;
char *ep;
int opt;
int interactive = 0;
int daemon = 0;
char *ep;
int opt;
- while((opt = getopt(argc, argv, "Ddhip:v")) != -1) {
+ while((opt = getopt(argc, argv, "Ddhip:
l:
v")) != -1) {
switch (opt) {
case 'D':
debug = 1;
switch (opt) {
case 'D':
debug = 1;
@@
-526,6
+535,9
@@
int main(int argc, char **argv)
exit(EXIT_FAILURE);
}
break;
exit(EXIT_FAILURE);
}
break;
+ case 'l':
+ iface = optarg;
+ break;
case 'v':
verbose = 1;
break;
case 'v':
verbose = 1;
break;
@@
-542,6
+554,6
@@
int main(int argc, char **argv)
if (interactive) {
return interactive_server();
} else {
if (interactive) {
return interactive_server();
} else {
- return socket_server(port, daemon);
+ return socket_server(
iface,
port, daemon);
}
}
}
}
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