X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=networking%2Fnc.c;h=63d8c5b19db9b70b8f16527ac4a3f6e8ed7b5104;hb=3d2405cfb30ccc8113839c1be3ee265597b857a6;hp=b58bd6a12f38219357e1df67430cdc5f91cf0698;hpb=be9f44a7dfb225f03b68ad9c94539528458c84ff;p=oweals%2Fbusybox.git

diff --git a/networking/nc.c b/networking/nc.c
index b58bd6a12..63d8c5b19 100644
--- a/networking/nc.c
+++ b/networking/nc.c
@@ -40,17 +40,22 @@
 #include <sys/ioctl.h>
 #include "busybox.h"
 
+#define GAPING_SECURITY_HOLE
+
 int nc_main(int argc, char **argv)
 {
-	int do_listen = 0, lport = 0, tmpfd, opt, sfd;
+	int do_listen = 0, lport = 0, delay = 0, tmpfd, opt, sfd, x;
 	char buf[BUFSIZ];
+#ifdef GAPING_SECURITY_HOLE
+	char * pr00gie = NULL;                  
+#endif
 
 	struct sockaddr_in address;
 	struct hostent *hostinfo;
 
 	fd_set readfds, testfds;
 
-	while ((opt = getopt(argc, argv, "lp:")) > 0) {
+	while ((opt = getopt(argc, argv, "lp:i:e:")) > 0) {
 		switch (opt) {
 			case 'l':
 				do_listen++;
@@ -58,17 +63,35 @@ int nc_main(int argc, char **argv)
 			case 'p':
 				lport = atoi(optarg);
 				break;
+			case 'i':
+				delay = atoi(optarg);
+				break;
+#ifdef GAPING_SECURITY_HOLE
+			case 'e':
+				pr00gie = optarg;
+				break;
+#endif
 			default:
 				show_usage();
 		}
 	}
 
+#ifdef GAPING_SECURITY_HOLE
+	if (pr00gie) {
+		/* won't need stdin */
+		close (fileno(stdin));                          
+	}
+#endif /* GAPING_SECURITY_HOLE */
+
+
 	if ((do_listen && optind != argc) || (!do_listen && optind + 2 != argc))
 		show_usage();
 
 	if ((sfd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
 		perror_msg_and_die("socket");
-
+	x = 1;
+	if (setsockopt (sfd, SOL_SOCKET, SO_REUSEADDR, &x, sizeof (x)) == -1)
+		perror_msg_and_die ("reuseaddr failed");
 	address.sin_family = AF_INET;
 
 	if (lport != 0) {
@@ -91,8 +114,7 @@ int nc_main(int argc, char **argv)
 		close(sfd);
 		sfd = tmpfd;
 	} else {
-		if ((hostinfo = gethostbyname(argv[optind])) == NULL)
-			error_msg_and_die("cannot resolve %s\n", argv[optind]);
+		hostinfo = xgethostbyname(argv[optind]);
 
 		address.sin_addr = *(struct in_addr *) *hostinfo->h_addr_list;
 		address.sin_port = htons(atoi(argv[optind+1]));
@@ -101,6 +123,20 @@ int nc_main(int argc, char **argv)
 			perror_msg_and_die("connect");
 	}
 
+#ifdef GAPING_SECURITY_HOLE
+	/* -e given? */
+	if (pr00gie) {
+		dup2(sfd, 0);
+		close(sfd);
+		dup2 (0, 1);
+		dup2 (0, 2);
+		execl (pr00gie, pr00gie, NULL);
+		/* Don't print stuff or it will go over the wire.... */
+		_exit(-1);
+	}
+#endif /* GAPING_SECURITY_HOLE */
+
+
 	FD_ZERO(&readfds);
 	FD_SET(sfd, &readfds);
 	FD_SET(STDIN_FILENO, &readfds);
@@ -132,6 +168,9 @@ int nc_main(int argc, char **argv)
 
 				if (full_write(ofd, buf, nread) < 0)
 					perror_msg_and_die("write");
+				if (delay > 0) {
+					sleep(delay);
+				}
 			}
 		}
 	}