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Upgrade netcat a lot. Make -e able to take the rest of the command line as

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what to exec.  Add -f mode and a brief explanation of how to use it to replace
minicom.  Add -l -l mode so you can turn any command into a server.  And group
all of netcat's command line options under two CONFIG entries, so if you
disable both it doesn't use getopt at all.
This commit is contained in:
Rob Landley
2006-07-10 19:45:20 +00:00
parent 5d8843e451
commit 1cca9484db
4 changed files with 146 additions and 117 deletions
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42
include/usage.h
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@ -2105,23 +2105,41 @@ USE_FEATURE_MDEV_CONFIG( \
" or\n" \
"$ nameif -c /etc/my_mactab_file\n" \
#ifdef CONFIG_NC_GAPING_SECURITY_HOLE
# define USAGE_NC_EXEC(a) a
#if ENABLE_NC_SERVER || ENABLE_NC_EXTRA
#define NC_BR1 "["
#define NC_BR2 "]"
#else
# define USAGE_NC_EXEC(a)
#define NC_BR1
#define NC_BR2
#endif
#define nc_trivial_usage \
"[OPTIONS] [IP] [port]"
"[" \
NC_BR1 USE_NC_SERVER("-lp")USE_NC_EXTRA("iwf") NC_BR2 \
" ["USE_NC_EXTRA("FILENAME|")"{IPADDR PORTNUM}]"USE_NC_EXTRA(" [-e COMMAND]")
#define nc_full_usage \
"Netcat opens a pipe to IP:port\n\n" \
"Options:\n" \
"\t-l\t\tlisten mode, for inbound connects\n" \
"\t-p PORT\t\tlocal port number\n" \
"\t-i SECS\t\tdelay interval for lines sent\n" \
USAGE_NC_EXEC( \
"\t-e PROG\t\tprogram to exec after connect (dangerous!)\n" \
"Netcat opens a pipe, either to IP:port\n\n" \
"Options:" \
USE_NC_EXTRA( \
"\n\t-e\t\texec rest of command line after connect\n" \
"\t-i SECS\t\tdelay interval for lines sent\n" \
"\t-w SECS\t\ttimeout for connect\n" \
"\t-f filename\tuse file (ala /dev/ttyS0) instead of network" \
) \
"\t-w SECS\t\ttimeout for connects and final net reads"
USE_NC_SERVER( \
"\n\t-l\t\tlisten mode, for inbound connects\n" \
USE_NC_EXTRA("\t\t\t(use -l twice with -e for persistent server)\n") \
"\t-p PORT\t\tlocal port number" \
)
#define nc_notes_usage "" \
USE_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" \