#include <limits.h>
#include <netinet/in.h>
#include <netdb.h>
+#include <sys/un.h>
#include <string.h>
#include <pwd.h>
#include <errno.h>
/*
* This is a generic function to set up a master socket for listening on
* a TCP port. The server shuts down if the bind fails.
+ *
+ * If a negative number is specified, a Unix domain socket is created.
*/
int ig_tcp_server(int port_number, int queue_len)
{
struct sockaddr_in sin;
+ struct sockaddr_un addr;
int s, i;
+ int is_unix = 0;
- memset(&sin, 0, sizeof(sin));
- sin.sin_family = AF_INET;
- sin.sin_addr.s_addr = INADDR_ANY;
+ if (port_number < 0) {
+ is_unix = 1;
+ }
- if (port_number == 0) {
- lprintf(1, "citserver: illegal port number specified\n");
- return(-1);
+ if (is_unix) {
+ memset(&addr, 0, sizeof(addr));
+ addr.sun_family = AF_UNIX;
+ sprintf(addr.sun_path, USOCKPATH, 0-port_number);
+ }
+ else {
+ memset(&sin, 0, sizeof(sin));
+ sin.sin_family = AF_INET;
+ sin.sin_addr.s_addr = INADDR_ANY;
+ sin.sin_port = htons((u_short)port_number);
+ }
+
+ if (is_unix) {
+ s = socket(AF_UNIX, SOCK_STREAM, 0);
+ }
+ else {
+ s = socket(PF_INET, SOCK_STREAM,
+ (getprotobyname("tcp")->p_proto));
}
-
- sin.sin_port = htons((u_short)port_number);
- s = socket(PF_INET, SOCK_STREAM, (getprotobyname("tcp")->p_proto));
if (s < 0) {
lprintf(1, "citserver: Can't create a socket: %s\n",
strerror(errno));
}
/* Set the SO_REUSEADDR socket option, because it makes sense. */
- i = 1;
- setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i));
+ if (!is_unix) {
+ i = 1;
+ setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i));
+ }
- if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
- lprintf(1, "citserver: Can't bind: %s\n", strerror(errno));
- return(-1);
+ if (is_unix) {
+ if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
+ lprintf(1, "citserver: Can't bind: %s\n",
+ strerror(errno));
+ return(-1);
+ }
+ }
+ else {
+ if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
+ lprintf(1, "citserver: Can't bind: %s\n",
+ strerror(errno));
+ return(-1);
+ }
}
if (listen(s, queue_len) < 0) {
*/
void sysdep_master_cleanup(void) {
struct ServiceFunctionHook *serviceptr;
+ char sockpath[256];
/*
* close all protocol master sockets
lprintf(3, "Closing listener on port %d\n",
serviceptr->tcp_port);
close(serviceptr->msock);
+
+ /* If it's a Unix domain socket, remove the file. */
+ if (serviceptr->tcp_port < 0) {
+ sprintf(sockpath, USOCKPATH, 0-(serviceptr->tcp_port));
+ lprintf(9, "Removing <%s>\n", sockpath);
+ unlink(sockpath);
+ }
}
}
/*
* Bind the server to our favorite ports.
*/
- CtdlRegisterServiceHook(config.c_port_number,
+ CtdlRegisterServiceHook(config.c_port_number, /* TCP */
+ citproto_begin_session,
+ do_command_loop);
+ CtdlRegisterServiceHook(0-config.c_port_number, /* Unix */
citproto_begin_session,
do_command_loop);