Use data ports in the range 40000..44999 by default to enhance FTP usability

in a firewall environment.  Original idea by Mark Tracy (?).

Reviewed by:	wollman
Submitted by:	pst

1 files changed, 6 insertions, 1 deletions

diff --git a/usr.bin/ftp/main.c b/usr.bin/ftp/main.c
index 7df165c..cca7a919 100644
--- a/usr.bin/ftp/main.c
+++ b/usr.bin/ftp/main.c
@@ -82,13 +82,14 @@ main(argc, argv)
 	interactive = 1;
 	autologin = 1;
 	passivemode = 0;
+	restricted_data_ports = 1;
 
 	cp = strrchr(argv[0], '/');
 	cp = (cp == NULL) ? argv[0] : cp+1;
 	if (strcmp(cp, "pftp") == 0)
 	    passivemode = 1;
 
-	while ((ch = getopt(argc, argv, "dginptv")) != EOF) {
+	while ((ch = getopt(argc, argv, "dginptvU")) != EOF) {
 		switch (ch) {
 		case 'd':
 			options |= SO_DEBUG;
@@ -119,6 +120,10 @@ main(argc, argv)
 			verbose++;
 			break;
 
+		case 'U':
+			restricted_data_ports = 0;
+			break;
+
 		default:
 			(void)fprintf(stderr,
 				"usage: ftp [-dginptv] [host [port]]\n");