X-Git-Url: https://gapil.gnulinux.it/gitweb/?p=gapil.git;a=blobdiff_plain;f=listati%2FTCP_echod_first_init.c;fp=listati%2FTCP_echod_first_init.c;h=02e99adfe78082052ca778dad4c8d291eb54f46e;hp=0000000000000000000000000000000000000000;hb=541dec587ab21a1e01342784a803ab6404b98d1e;hpb=5077cb02e6a65499d7fddcd01d68e8800c73a6fa

diff --git a/listati/TCP_echod_first_init.c b/listati/TCP_echod_first_init.c
new file mode 100644
index 0000000..02e99ad
--- /dev/null
+++ b/listati/TCP_echod_first_init.c
@@ -0,0 +1,36 @@
+int main(int argc, char *argv[])
+{
+    int list_fd, conn_fd; 
+    pid_t pid;
+    struct sockaddr_in serv_add;
+    ...
+    /* create and init socket */
+    if ( (list_fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
+	perror("Socket creation error");
+	exit(1);
+    }
+    memset((void *)&serv_add, 0, sizeof(serv_add)); /* clear server address */
+    serv_add.sin_family = AF_INET;                  /* address type is INET */
+    serv_add.sin_port = htons(7);                   /* echo port is 7 */
+    serv_add.sin_addr.s_addr = htonl(INADDR_ANY);   /* connect from anywhere */
+    if (bind(list_fd, (struct sockaddr *)&serv_add, sizeof(serv_add)) < 0) {
+	perror("bind error");
+	exit(1);
+    }
+    /* give away privileges and go daemon */
+    if (setgid(65534) !=0) { /* first give away group privileges */
+	perror("cannot give away group privileges");
+	exit(1);
+    }
+    if (setuid(65534) !=0) { /* and only after user ... */
+	perror("cannot give away user privileges");
+	exit(1);
+    }
+    if (demonize) {          /* go daemon */
+        openlog(argv[0], 0, LOG_DAEMON); /* open logging */
+ 	if (daemon(0, 0) != 0) {
+	    perror("cannot start as daemon");
+	    exit(1);
+	}
+    }
+    ...