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authorEric Andersen2002-04-26 23:59:12 +0000
committerEric Andersen2002-04-26 23:59:12 +0000
commit1323c940fd651a818e133f5c13f28b708998420a (patch)
treea73ac5d076263be38e8e419ea07b565a1acf0296 /networking/nc.c
parent00a6a750357d49d3e9cedf3edee7ae2aceae6748 (diff)
downloadbusybox-1323c940fd651a818e133f5c13f28b708998420a.zip
busybox-1323c940fd651a818e133f5c13f28b708998420a.tar.gz
Add netcat -i option, per patch from Cristian Ionescu-Idbohrn
<cristian.ionescu-idbohrn@axis.com>
Diffstat (limited to 'networking/nc.c')
-rw-r--r--networking/nc.c42
1 files changed, 40 insertions, 2 deletions
diff --git a/networking/nc.c b/networking/nc.c
index 5335872..e1741cd 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;
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++;
@@ -58,11 +63,27 @@ 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();
@@ -100,6 +121,20 @@ 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);
@@ -131,6 +166,9 @@ int nc_main(int argc, char **argv)
if (full_write(ofd, buf, nread) < 0)
perror_msg_and_die("write");
+ if (delay > 0) {
+ sleep(delay);
+ }
}
}
}