1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
--- appl/ftp/ftpd/ftpd.c.ORIG Fri Jun 29 09:41:46 2001
+++ appl/ftp/ftpd/ftpd.c Fri Jun 29 09:42:04 2001
@@ -68,6 +68,7 @@
int debug = 0;
int ftpd_timeout = 900; /* timeout after 15 minutes of inactivity */
int maxtimeout = 7200;/* don't allow idle time to be set beyond 2 hours */
+int restricted_data_ports = 1;
int logging;
int guest;
int dochroot;
@@ -217,6 +218,7 @@
{ NULL, 't', arg_integer, &ftpd_timeout, "initial timeout" },
{ NULL, 'T', arg_integer, &maxtimeout, "max timeout" },
{ NULL, 'u', arg_string, &umask_string, "umask for user logins" },
+ { NULL, 'U', arg_negative_flag, &restricted_data_ports, "don't use high data ports" },
{ NULL, 'd', arg_flag, &debug, "enable debugging" },
{ NULL, 'v', arg_flag, &debug, "enable debugging" },
{ "builtin-ls", 'B', arg_flag, &use_builtin_ls, "use built-in ls to list files" },
@@ -1951,6 +1953,8 @@
socket_set_address_and_port (pasv_addr,
socket_get_address (ctrl_addr),
0);
+ socket_set_portrange(pdata, restricted_data_ports,
+ pasv_addr->sa_family);
seteuid(0);
if (bind(pdata, pasv_addr, socket_sockaddr_size (pasv_addr)) < 0) {
seteuid(pw->pw_uid);
@@ -1993,6 +1997,8 @@
socket_set_address_and_port (pasv_addr,
socket_get_address (ctrl_addr),
0);
+ socket_set_portrange(pdata, restricted_data_ports,
+ pasv_addr->sa_family);
seteuid(0);
if (bind(pdata, pasv_addr, socket_sockaddr_size (pasv_addr)) < 0) {
seteuid(pw->pw_uid);
|
