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nc: introduce CONFIG_NC_110_COMPAT option.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
parent
a73b87e934
commit
77cc2c5738
@ -2954,84 +2954,6 @@ INSERT
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" or\n" \
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"$ nameif -c /etc/my_mactab_file\n" \
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#if !ENABLE_DESKTOP
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#if ENABLE_NC_SERVER || ENABLE_NC_EXTRA
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#define NC_OPTIONS_STR "\n\nOptions:"
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#else
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#define NC_OPTIONS_STR
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#endif
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#define nc_trivial_usage \
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IF_NC_EXTRA("[-iN] [-wN] ")IF_NC_SERVER("[-l] [-p PORT] ") \
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"["IF_NC_EXTRA("-f FILENAME|")"IPADDR PORT]"IF_NC_EXTRA(" [-e PROG]")
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#define nc_full_usage "\n\n" \
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"Open a pipe to IP:port" IF_NC_EXTRA(" or file") \
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NC_OPTIONS_STR \
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IF_NC_EXTRA( \
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"\n -e PROG Run PROG after connect" \
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"\n -i SEC Delay interval for lines sent" \
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"\n -w SEC Timeout for connect" \
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"\n -f FILE Use file (ala /dev/ttyS0) instead of network" \
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) \
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IF_NC_SERVER( \
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"\n -l Listen mode, for inbound connects" \
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IF_NC_EXTRA( \
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"\n (use -l twice with -e for persistent server)") \
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"\n -p PORT Local port" \
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)
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#define nc_notes_usage "" \
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IF_NC_EXTRA( \
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"To use netcat as a terminal emulator on a serial port:\n\n" \
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"$ stty 115200 -F /dev/ttyS0\n" \
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"$ stty raw -echo -ctlecho && nc -f /dev/ttyS0\n" \
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)
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#define nc_example_usage \
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"$ nc foobar.somedomain.com 25\n" \
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"220 foobar ESMTP Exim 3.12 #1 Sat, 15 Apr 2000 00:03:02 -0600\n" \
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"help\n" \
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"214-Commands supported:\n" \
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"214- HELO EHLO MAIL RCPT DATA AUTH\n" \
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"214 NOOP QUIT RSET HELP\n" \
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"quit\n" \
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"221 foobar closing connection\n"
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#else /* DESKTOP nc - much more compatible with nc 1.10 */
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#define nc_trivial_usage \
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"[OPTIONS] HOST PORT - connect" \
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IF_NC_SERVER("\n" \
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"nc [OPTIONS] -l -p PORT [HOST] [PORT] - listen")
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#define nc_full_usage "\n\n" \
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"Options:" \
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"\n -e PROG Run PROG after connect (must be last)" \
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IF_NC_SERVER( \
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"\n -l Listen mode, for inbound connects" \
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) \
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"\n -n Don't do DNS resolution" \
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"\n -s ADDR Local address" \
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"\n -p PORT Local port" \
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"\n -u UDP mode" \
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"\n -v Verbose" \
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"\n -w SEC Timeout for connects and final net reads" \
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IF_NC_EXTRA( \
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"\n -i SEC Delay interval for lines sent" /* ", ports scanned" */ \
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"\n -o FILE Hex dump traffic" \
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"\n -z Zero-I/O mode (scanning)" \
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) \
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/* "\n -r Randomize local and remote ports" */
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/* "\n -g gateway Source-routing hop point[s], up to 8" */
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/* "\n -G num Source-routing pointer: 4, 8, 12, ..." */
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/* "\nport numbers can be individual or ranges: lo-hi [inclusive]" */
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/* -e PROG can take ARGS too: "nc ... -e ls -l", but we don't document it
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* in help text: nc 1.10 does not allow that. We don't want to entice
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* users to use this incompatibility */
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#endif
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#define netstat_trivial_usage \
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"[-laentuwxr"IF_FEATURE_NETSTAT_WIDE("W")IF_FEATURE_NETSTAT_PRG("p")"]"
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#define netstat_full_usage "\n\n" \
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@ -623,29 +623,6 @@ config FEATURE_NAMEIF_EXTENDED
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new_interface_name mac=00:80:C8:38:91:B5
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new_interface_name 00:80:C8:38:91:B5
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config NC
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bool "nc"
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default y
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help
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A simple Unix utility which reads and writes data across network
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connections.
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config NC_SERVER
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bool "Netcat server options (-l)"
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default y
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depends on NC
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help
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Allow netcat to act as a server.
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config NC_EXTRA
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bool "Netcat extensions (-eiw and filename)"
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default y
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depends on NC
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help
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Add -e (support for executing the rest of the command line after
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making or receiving a successful connection), -i (delay interval for
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lines sent), -w (timeout for initial connection).
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config NETSTAT
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bool "netstat"
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default y
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@ -9,10 +9,89 @@
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#include "libbb.h"
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#if ENABLE_DESKTOP
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#include "nc_bloaty.c"
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//config:config NC
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//config: bool "nc"
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//config: default y
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//config: help
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//config: A simple Unix utility which reads and writes data across network
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//config: connections.
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//config:
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//config:config NC_SERVER
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//config: bool "Netcat server options (-l)"
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//config: default y
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//config: depends on NC
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//config: help
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//config: Allow netcat to act as a server.
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//config:
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//config:config NC_EXTRA
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//config: bool "Netcat extensions (-eiw and filename)"
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//config: default y
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//config: depends on NC
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//config: help
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//config: Add -e (support for executing the rest of the command line after
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//config: making or receiving a successful connection), -i (delay interval for
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//config: lines sent), -w (timeout for initial connection).
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//config:
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//config:config NC_110_COMPAT
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//config: bool "Netcat 1.10 compatibility (+2.5k)"
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//config: default y
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//config: depends on NC
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//config: help
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//config: This option makes nc closely follow original nc-1.10.
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//config: The code is about 2.5k bigger. It enables
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//config: -s ADDR, -n, -u, -v, -o FILE, -z options, but loses
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//config: busybox-specific extensions: -f FILE and -ll.
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#if ENABLE_NC_110_COMPAT
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# include "nc_bloaty.c"
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#else
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//usage:#if !ENABLE_NC_110_COMPAT
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//usage:
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//usage:#if ENABLE_NC_SERVER || ENABLE_NC_EXTRA
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//usage:#define NC_OPTIONS_STR "\n\nOptions:"
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//usage:#else
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//usage:#define NC_OPTIONS_STR
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//usage:#endif
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//usage:
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//usage:#define nc_trivial_usage
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//usage: IF_NC_EXTRA("[-iN] [-wN] ")IF_NC_SERVER("[-l] [-p PORT] ")
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//usage: "["IF_NC_EXTRA("-f FILE|")"IPADDR PORT]"IF_NC_EXTRA(" [-e PROG]")
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//usage:#define nc_full_usage "\n\n"
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//usage: "Open a pipe to IP:PORT" IF_NC_EXTRA(" or FILE")
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//usage: NC_OPTIONS_STR
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//usage: IF_NC_EXTRA(
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//usage: "\n -e PROG Run PROG after connect"
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//usage: IF_NC_SERVER(
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//usage: "\n -l Listen mode, for inbound connects"
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//usage: IF_NC_EXTRA(
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//usage: "\n (use -l twice with -e for persistent server)")
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//usage: "\n -p PORT Local port"
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//usage: )
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//usage: "\n -w SEC Timeout for connect"
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//usage: "\n -i SEC Delay interval for lines sent"
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//usage: "\n -f FILE Use file (ala /dev/ttyS0) instead of network"
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//usage: )
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//usage:
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//usage:#define nc_notes_usage ""
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//usage: IF_NC_EXTRA(
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//usage: "To use netcat as a terminal emulator on a serial port:\n\n"
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//usage: "$ stty 115200 -F /dev/ttyS0\n"
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//usage: "$ stty raw -echo -ctlecho && nc -f /dev/ttyS0\n"
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//usage: )
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//usage:
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//usage:#define nc_example_usage
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//usage: "$ nc foobar.somedomain.com 25\n"
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//usage: "220 foobar ESMTP Exim 3.12 #1 Sat, 15 Apr 2000 00:03:02 -0600\n"
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//usage: "help\n"
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//usage: "214-Commands supported:\n"
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//usage: "214- HELO EHLO MAIL RCPT DATA AUTH\n"
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//usage: "214 NOOP QUIT RSET HELP\n"
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//usage: "quit\n"
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//usage: "221 foobar closing connection\n"
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//usage:
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//usage:#endif
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/* Lots of small differences in features
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* when compared to "standard" nc
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*/
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@ -39,7 +118,7 @@ int nc_main(int argc, char **argv)
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if (ENABLE_NC_SERVER || ENABLE_NC_EXTRA) {
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/* getopt32 is _almost_ usable:
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** it cannot handle "... -e prog -prog-opt" */
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** it cannot handle "... -e PROG -prog-opt" */
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while ((opt = getopt(argc, argv,
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"" IF_NC_SERVER("lp:") IF_NC_EXTRA("w:i:f:e:") )) > 0
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) {
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@ -57,7 +136,7 @@ int nc_main(int argc, char **argv)
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/* We cannot just 'break'. We should let getopt finish.
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** Or else we won't be able to find where
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** 'host' and 'port' params are
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** (think "nc -w 60 host port -e prog"). */
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** (think "nc -w 60 host port -e PROG"). */
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IF_NC_EXTRA(
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char **p;
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// +2: one for progname (optarg) and one for NULL
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@ -70,7 +149,7 @@ int nc_main(int argc, char **argv)
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)
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/* optind points to argv[arvc] (NULL) now.
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** FIXME: we assume that getopt will not count options
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** possibly present on "-e prog args" and will not
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** possibly present on "-e PROG ARGS" and will not
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** include them into final value of optind
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** which is to be used ... */
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} else bb_show_usage();
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@ -36,9 +36,9 @@
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* - source routing
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* - multiple DNS checks
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* Functionalty which is different from nc 1.10:
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* - Prog in '-e prog' can have prog's parameters and options.
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* - Prog in '-e PROG' can have prog's parameters and options.
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* Because of this -e option must be last.
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* - nc doesn't redirect stderr to the network socket for the -e prog.
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* - nc doesn't redirect stderr to the network socket for the -e PROG.
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* - numeric addresses are printed in (), not [] (IPv6 looks better),
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* port numbers are inside (): (1.2.3.4:5678)
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* - network read errors are reported on verbose levels > 1
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@ -50,6 +50,42 @@
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/* done in nc.c: #include "libbb.h" */
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//usage:#if ENABLE_NC_110_COMPAT
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//usage:
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//usage:#define nc_trivial_usage
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//usage: "[OPTIONS] HOST PORT - connect"
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//usage: IF_NC_SERVER("\n"
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//usage: "nc [OPTIONS] -l -p PORT [HOST] [PORT] - listen")
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//usage:#define nc_full_usage "\n\n"
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//usage: "Options:"
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//usage: "\n -e PROG Run PROG after connect (must be last)"
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//usage: IF_NC_SERVER(
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//usage: "\n -l Listen mode, for inbound connects"
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//usage: )
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//usage: "\n -p PORT Local port"
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//usage: "\n -s ADDR Local address"
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//usage: "\n -w SEC Timeout for connects and final net reads"
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//usage: IF_NC_EXTRA(
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//usage: "\n -i SEC Delay interval for lines sent" /* ", ports scanned" */
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//usage: )
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//usage: "\n -n Don't do DNS resolution"
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//usage: "\n -u UDP mode"
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//usage: "\n -v Verbose"
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//usage: IF_NC_EXTRA(
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//usage: "\n -o FILE Hex dump traffic"
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//usage: "\n -z Zero-I/O mode (scanning)"
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//usage: )
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//usage:#endif
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/* "\n -r Randomize local and remote ports" */
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/* "\n -g gateway Source-routing hop point[s], up to 8" */
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/* "\n -G num Source-routing pointer: 4, 8, 12, ..." */
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/* "\nport numbers can be individual or ranges: lo-hi [inclusive]" */
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/* -e PROG can take ARGS too: "nc ... -e ls -l", but we don't document it
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* in help text: nc 1.10 does not allow that. We don't want to entice
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* users to use this incompatibility */
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enum {
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SLEAZE_PORT = 31337, /* for UDP-scan RTT trick, change if ya want */
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BIGSIZ = 8192, /* big buffers */
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