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Diffstat (limited to 'networking/nc.c')
-rw-r--r--networking/nc.c89
1 files changed, 84 insertions, 5 deletions
diff --git a/networking/nc.c b/networking/nc.c
index 243c479..5fd8bd7 100644
--- a/networking/nc.c
+++ b/networking/nc.c
@@ -9,10 +9,89 @@
#include "libbb.h"
-#if ENABLE_DESKTOP
-#include "nc_bloaty.c"
+//config:config NC
+//config: bool "nc"
+//config: default y
+//config: help
+//config: A simple Unix utility which reads and writes data across network
+//config: connections.
+//config:
+//config:config NC_SERVER
+//config: bool "Netcat server options (-l)"
+//config: default y
+//config: depends on NC
+//config: help
+//config: Allow netcat to act as a server.
+//config:
+//config:config NC_EXTRA
+//config: bool "Netcat extensions (-eiw and filename)"
+//config: default y
+//config: depends on NC
+//config: help
+//config: Add -e (support for executing the rest of the command line after
+//config: making or receiving a successful connection), -i (delay interval for
+//config: lines sent), -w (timeout for initial connection).
+//config:
+//config:config NC_110_COMPAT
+//config: bool "Netcat 1.10 compatibility (+2.5k)"
+//config: default y
+//config: depends on NC
+//config: help
+//config: This option makes nc closely follow original nc-1.10.
+//config: The code is about 2.5k bigger. It enables
+//config: -s ADDR, -n, -u, -v, -o FILE, -z options, but loses
+//config: busybox-specific extensions: -f FILE and -ll.
+
+#if ENABLE_NC_110_COMPAT
+# include "nc_bloaty.c"
#else
+//usage:#if !ENABLE_NC_110_COMPAT
+//usage:
+//usage:#if ENABLE_NC_SERVER || ENABLE_NC_EXTRA
+//usage:#define NC_OPTIONS_STR "\n\nOptions:"
+//usage:#else
+//usage:#define NC_OPTIONS_STR
+//usage:#endif
+//usage:
+//usage:#define nc_trivial_usage
+//usage: IF_NC_EXTRA("[-iN] [-wN] ")IF_NC_SERVER("[-l] [-p PORT] ")
+//usage: "["IF_NC_EXTRA("-f FILE|")"IPADDR PORT]"IF_NC_EXTRA(" [-e PROG]")
+//usage:#define nc_full_usage "\n\n"
+//usage: "Open a pipe to IP:PORT" IF_NC_EXTRA(" or FILE")
+//usage: NC_OPTIONS_STR
+//usage: IF_NC_EXTRA(
+//usage: "\n -e PROG Run PROG after connect"
+//usage: IF_NC_SERVER(
+//usage: "\n -l Listen mode, for inbound connects"
+//usage: IF_NC_EXTRA(
+//usage: "\n (use -l twice with -e for persistent server)")
+//usage: "\n -p PORT Local port"
+//usage: )
+//usage: "\n -w SEC Timeout for connect"
+//usage: "\n -i SEC Delay interval for lines sent"
+//usage: "\n -f FILE Use file (ala /dev/ttyS0) instead of network"
+//usage: )
+//usage:
+//usage:#define nc_notes_usage ""
+//usage: IF_NC_EXTRA(
+//usage: "To use netcat as a terminal emulator on a serial port:\n\n"
+//usage: "$ stty 115200 -F /dev/ttyS0\n"
+//usage: "$ stty raw -echo -ctlecho && nc -f /dev/ttyS0\n"
+//usage: )
+//usage:
+//usage:#define nc_example_usage
+//usage: "$ nc foobar.somedomain.com 25\n"
+//usage: "220 foobar ESMTP Exim 3.12 #1 Sat, 15 Apr 2000 00:03:02 -0600\n"
+//usage: "help\n"
+//usage: "214-Commands supported:\n"
+//usage: "214- HELO EHLO MAIL RCPT DATA AUTH\n"
+//usage: "214 NOOP QUIT RSET HELP\n"
+//usage: "quit\n"
+//usage: "221 foobar closing connection\n"
+//usage:
+//usage:#endif
+
/* Lots of small differences in features
* when compared to "standard" nc
*/
@@ -39,7 +118,7 @@ int nc_main(int argc, char **argv)
if (ENABLE_NC_SERVER || ENABLE_NC_EXTRA) {
/* getopt32 is _almost_ usable:
- ** it cannot handle "... -e prog -prog-opt" */
+ ** it cannot handle "... -e PROG -prog-opt" */
while ((opt = getopt(argc, argv,
"" IF_NC_SERVER("lp:") IF_NC_EXTRA("w:i:f:e:") )) > 0
) {
@@ -57,7 +136,7 @@ int nc_main(int argc, char **argv)
/* We cannot just 'break'. We should let getopt finish.
** Or else we won't be able to find where
** 'host' and 'port' params are
- ** (think "nc -w 60 host port -e prog"). */
+ ** (think "nc -w 60 host port -e PROG"). */
IF_NC_EXTRA(
char **p;
// +2: one for progname (optarg) and one for NULL
@@ -70,7 +149,7 @@ int nc_main(int argc, char **argv)
)
/* optind points to argv[arvc] (NULL) now.
** FIXME: we assume that getopt will not count options
- ** possibly present on "-e prog args" and will not
+ ** possibly present on "-e PROG ARGS" and will not
** include them into final value of optind
** which is to be used ... */
} else bb_show_usage();