}
-int start_accept_loop(int port, int (*fn)(int ))
+void start_accept_loop(int port, int (*fn)(int ))
{
int s;
- signal(SIGCLD, SIG_IGN);
+ signal(SIGCHLD, SIG_IGN);
/* open an incoming socket */
s = open_socket_in(SOCK_STREAM, port);
if (s == -1)
- return(-1);
+ exit_cleanup(1);
/* ready to listen */
if (listen(s, 5) == -1) {
close(s);
- return -1;
+ exit_cleanup(1);
}
close(fd);
}
- return 0;
}
void set_socket_options(int fd, char *options)
{
char *tok;
+ if (!options || !*options) return;
+
options = strdup(options);
if (!options) out_of_memory("set_socket_options");
close(1);
close(2);
}
+
+/*******************************************************************
+ return the IP addr of the client as a string
+ ******************************************************************/
+char *client_addr(int fd)
+{
+ struct sockaddr sa;
+ struct sockaddr_in *sockin = (struct sockaddr_in *) (&sa);
+ int length = sizeof(sa);
+ static char addr_buf[100];
+
+ if (getpeername(fd, &sa, &length)) {
+ exit_cleanup(1);
+ }
+
+ strlcpy(addr_buf,(char *)inet_ntoa(sockin->sin_addr), sizeof(addr_buf)-1);
+
+ return addr_buf;
+}
+
+
+/*******************************************************************
+ return the DNS name of the client
+ ******************************************************************/
+char *client_name(int fd)
+{
+ struct sockaddr sa;
+ struct sockaddr_in *sockin = (struct sockaddr_in *) (&sa);
+ int length = sizeof(sa);
+ static char name_buf[100];
+ struct hostent *hp;
+ char **p;
+ char *def = "UNKNOWN";
+
+ strcpy(name_buf,def);
+
+ if (getpeername(fd, &sa, &length)) {
+ exit_cleanup(1);
+ }
+
+ /* Look up the remote host name. */
+ if ((hp = gethostbyaddr((char *) &sockin->sin_addr,
+ sizeof(sockin->sin_addr),
+ AF_INET))) {
+ strlcpy(name_buf,(char *)hp->h_name,sizeof(name_buf) - 1);
+ }
+
+
+ /* do a forward lookup as well to prevent spoofing */
+ hp = gethostbyname(name_buf);
+ if (!hp) {
+ strcpy(name_buf,def);
+ rprintf(FERROR,"reverse name lookup failed\n");
+ } else {
+ for (p=hp->h_addr_list;*p;p++) {
+ if (memcmp(*p, &sockin->sin_addr, hp->h_length) == 0) {
+ break;
+ }
+ }
+ if (!*p) {
+ strcpy(name_buf,def);
+ rprintf(FERROR,"reverse name lookup mismatch - spoofed address?\n");
+ }
+ }
+
+ return name_buf;
+}