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authorDenys Vlasenko <vda.linux@googlemail.com>2010-06-27 02:22:02 (GMT)
committer Denys Vlasenko <vda.linux@googlemail.com>2010-06-27 02:22:02 (GMT)
commit77cc2c5738d780b97b56af49510ed64d61ad2e2d (patch)
treecbb8bd5787da4cfb0fca2710e35bd649d77b1371
parenta73b87e9343df2a6f14e328a977e7b70eb3ed707 (diff)
downloadbusybox-77cc2c5738d780b97b56af49510ed64d61ad2e2d.tar.gz
busybox-77cc2c5738d780b97b56af49510ed64d61ad2e2d.tar.bz2
nc: introduce CONFIG_NC_110_COMPAT option.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--include/usage.src.h78
-rw-r--r--networking/Config.src23
-rw-r--r--networking/nc.c89
-rw-r--r--networking/nc_bloaty.c40
4 files changed, 122 insertions, 108 deletions
diff --git a/include/usage.src.h b/include/usage.src.h
index f84bb93..6d17ab5 100644
--- a/include/usage.src.h
+++ b/include/usage.src.h
@@ -2954,84 +2954,6 @@ INSERT
" or\n" \
"$ nameif -c /etc/my_mactab_file\n" \
-#if !ENABLE_DESKTOP
-
-#if ENABLE_NC_SERVER || ENABLE_NC_EXTRA
-#define NC_OPTIONS_STR "\n\nOptions:"
-#else
-#define NC_OPTIONS_STR
-#endif
-
-#define nc_trivial_usage \
- IF_NC_EXTRA("[-iN] [-wN] ")IF_NC_SERVER("[-l] [-p PORT] ") \
- "["IF_NC_EXTRA("-f FILENAME|")"IPADDR PORT]"IF_NC_EXTRA(" [-e PROG]")
-#define nc_full_usage "\n\n" \
- "Open a pipe to IP:port" IF_NC_EXTRA(" or file") \
- NC_OPTIONS_STR \
- IF_NC_EXTRA( \
- "\n -e PROG Run PROG after connect" \
- "\n -i SEC Delay interval for lines sent" \
- "\n -w SEC Timeout for connect" \
- "\n -f FILE Use file (ala /dev/ttyS0) instead of network" \
- ) \
- IF_NC_SERVER( \
- "\n -l Listen mode, for inbound connects" \
- IF_NC_EXTRA( \
- "\n (use -l twice with -e for persistent server)") \
- "\n -p PORT Local port" \
- )
-
-#define nc_notes_usage "" \
- IF_NC_EXTRA( \
- "To use netcat as a terminal emulator on a serial port:\n\n" \
- "$ stty 115200 -F /dev/ttyS0\n" \
- "$ stty raw -echo -ctlecho && nc -f /dev/ttyS0\n" \
- )
-
-#define nc_example_usage \
- "$ nc foobar.somedomain.com 25\n" \
- "220 foobar ESMTP Exim 3.12 #1 Sat, 15 Apr 2000 00:03:02 -0600\n" \
- "help\n" \
- "214-Commands supported:\n" \
- "214- HELO EHLO MAIL RCPT DATA AUTH\n" \
- "214 NOOP QUIT RSET HELP\n" \
- "quit\n" \
- "221 foobar closing connection\n"
-
-#else /* DESKTOP nc - much more compatible with nc 1.10 */
-
-#define nc_trivial_usage \
- "[OPTIONS] HOST PORT - connect" \
- IF_NC_SERVER("\n" \
- "nc [OPTIONS] -l -p PORT [HOST] [PORT] - listen")
-#define nc_full_usage "\n\n" \
- "Options:" \
- "\n -e PROG Run PROG after connect (must be last)" \
- IF_NC_SERVER( \
- "\n -l Listen mode, for inbound connects" \
- ) \
- "\n -n Don't do DNS resolution" \
- "\n -s ADDR Local address" \
- "\n -p PORT Local port" \
- "\n -u UDP mode" \
- "\n -v Verbose" \
- "\n -w SEC Timeout for connects and final net reads" \
- IF_NC_EXTRA( \
- "\n -i SEC Delay interval for lines sent" /* ", ports scanned" */ \
- "\n -o FILE Hex dump traffic" \
- "\n -z Zero-I/O mode (scanning)" \
- ) \
-/* "\n -r Randomize local and remote ports" */
-/* "\n -g gateway Source-routing hop point[s], up to 8" */
-/* "\n -G num Source-routing pointer: 4, 8, 12, ..." */
-/* "\nport numbers can be individual or ranges: lo-hi [inclusive]" */
-
-/* -e PROG can take ARGS too: "nc ... -e ls -l", but we don't document it
- * in help text: nc 1.10 does not allow that. We don't want to entice
- * users to use this incompatibility */
-
-#endif
-
#define netstat_trivial_usage \
"[-laentuwxr"IF_FEATURE_NETSTAT_WIDE("W")IF_FEATURE_NETSTAT_PRG("p")"]"
#define netstat_full_usage "\n\n" \
diff --git a/networking/Config.src b/networking/Config.src
index ebad9e5..4494362 100644
--- a/networking/Config.src
+++ b/networking/Config.src
@@ -623,29 +623,6 @@ config FEATURE_NAMEIF_EXTENDED
new_interface_name mac=00:80:C8:38:91:B5
new_interface_name 00:80:C8:38:91:B5
-config NC
- bool "nc"
- default y
- help
- A simple Unix utility which reads and writes data across network
- connections.
-
-config NC_SERVER
- bool "Netcat server options (-l)"
- default y
- depends on NC
- help
- Allow netcat to act as a server.
-
-config NC_EXTRA
- bool "Netcat extensions (-eiw and filename)"
- default y
- depends on NC
- help
- Add -e (support for executing the rest of the command line after
- making or receiving a successful connection), -i (delay interval for
- lines sent), -w (timeout for initial connection).
-
config NETSTAT
bool "netstat"
default y
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();
diff --git a/networking/nc_bloaty.c b/networking/nc_bloaty.c
index 8d27e96..c44133b 100644
--- a/networking/nc_bloaty.c
+++ b/networking/nc_bloaty.c
@@ -36,9 +36,9 @@
* - source routing
* - multiple DNS checks
* Functionalty which is different from nc 1.10:
- * - Prog in '-e prog' can have prog's parameters and options.
+ * - Prog in '-e PROG' can have prog's parameters and options.
* Because of this -e option must be last.
- * - nc doesn't redirect stderr to the network socket for the -e prog.
+ * - nc doesn't redirect stderr to the network socket for the -e PROG.
* - numeric addresses are printed in (), not [] (IPv6 looks better),
* port numbers are inside (): (1.2.3.4:5678)
* - network read errors are reported on verbose levels > 1
@@ -50,6 +50,42 @@
/* done in nc.c: #include "libbb.h" */
+//usage:#if ENABLE_NC_110_COMPAT
+//usage:
+//usage:#define nc_trivial_usage
+//usage: "[OPTIONS] HOST PORT - connect"
+//usage: IF_NC_SERVER("\n"
+//usage: "nc [OPTIONS] -l -p PORT [HOST] [PORT] - listen")
+//usage:#define nc_full_usage "\n\n"
+//usage: "Options:"
+//usage: "\n -e PROG Run PROG after connect (must be last)"
+//usage: IF_NC_SERVER(
+//usage: "\n -l Listen mode, for inbound connects"
+//usage: )
+//usage: "\n -p PORT Local port"
+//usage: "\n -s ADDR Local address"
+//usage: "\n -w SEC Timeout for connects and final net reads"
+//usage: IF_NC_EXTRA(
+//usage: "\n -i SEC Delay interval for lines sent" /* ", ports scanned" */
+//usage: )
+//usage: "\n -n Don't do DNS resolution"
+//usage: "\n -u UDP mode"
+//usage: "\n -v Verbose"
+//usage: IF_NC_EXTRA(
+//usage: "\n -o FILE Hex dump traffic"
+//usage: "\n -z Zero-I/O mode (scanning)"
+//usage: )
+//usage:#endif
+
+/* "\n -r Randomize local and remote ports" */
+/* "\n -g gateway Source-routing hop point[s], up to 8" */
+/* "\n -G num Source-routing pointer: 4, 8, 12, ..." */
+/* "\nport numbers can be individual or ranges: lo-hi [inclusive]" */
+
+/* -e PROG can take ARGS too: "nc ... -e ls -l", but we don't document it
+ * in help text: nc 1.10 does not allow that. We don't want to entice
+ * users to use this incompatibility */
+
enum {
SLEAZE_PORT = 31337, /* for UDP-scan RTT trick, change if ya want */
BIGSIZ = 8192, /* big buffers */