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merging in the --lua-exec feature for ncat.

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This commit is contained in:
d33tah
2013-07-02 16:56:03 +00:00
parent 085d4ccfb2
commit b62709eb20
25 changed files with 1594 additions and 31 deletions
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2
nbase/nbase.h
View File

@@ -436,6 +436,8 @@ char *mkstr(const char *start, const char *end);
int alloc_vsprintf(char **strp, const char *fmt, va_list va) int alloc_vsprintf(char **strp, const char *fmt, va_list va)
__attribute__ ((format (printf, 2, 0))); __attribute__ ((format (printf, 2, 0)));
char *escape_windows_command_arg(const char *arg);
/* Trivial function that returns nonzero if all characters in str of /* Trivial function that returns nonzero if all characters in str of
length strlength are printable (as defined by isprint()) */ length strlength are printable (as defined by isprint()) */
int stringisprintable(const char *str, int strlength); int stringisprintable(const char *str, int strlength);

70
nbase/nbase_str.c
View File

@@ -216,6 +216,76 @@ int alloc_vsprintf(char **strp, const char *fmt, va_list va) {
return n; return n;
} }
/* Used by escape_windows_command_arg to append a character to the given buffer
at a given position, resizing the buffer if necessary. The position gets
moved by one byte after the call. */
static char* safe_append_char(char* buf, char byte, unsigned int *rpos, unsigned int *rsize)
{
if (*rpos >= *rsize) {
*rsize += 512;
buf = (char*) safe_realloc(buf, *rsize);
}
buf[(*rpos)++] = byte;
return buf;
}
/* Escape a string so that it can be round-tripped into a command line string
and retrieved by the default C/C++ command line parser. You can escape a list
of strings with this function, join them with spaces, pass them to
CreateProcess, and the new process will get the same list of strings in its
argv array.
http://msdn.microsoft.com/en-us/library/17w5ykft%28v=vs.85%29.aspx
http://blogs.msdn.com/b/twistylittlepassagesallalike/archive/2011/04/23/everyone-quotes-arguments-the-wrong-way.aspx
Returns a dynamically allocated string.
This function has a test program in test/test-escape_windows_command_arg.c.
Run that program after making any changes. */
char *escape_windows_command_arg(const char *arg)
{
const char *p;
char *ret;
unsigned int rpos = 0, rsize = 1;
ret = (char *) safe_malloc(rsize);
ret = safe_append_char(ret, '"', &rpos, &rsize);
for (p = arg; *p != '\0'; p++) {
unsigned int num_backslashes;
unsigned int i;
num_backslashes = 0;
for (; *p == '\\'; p++)
num_backslashes++;
if (*p == '\0') {
/* Escape all backslashes, but let the terminating double quotation
mark we add below be interpreted as a metacharacter. */
for (i = 0; i < num_backslashes*2; i++)
ret = safe_append_char(ret, '\\', &rpos, &rsize);
break;
} else if (*p == '"') {
/* Escape all backslashes and the following double quotation
mark. */
for (i = 0; i < num_backslashes*2 + 1; i++)
ret = safe_append_char(ret, '\\', &rpos, &rsize);
ret[rpos++] = *p;
} else {
/* Backslashes aren't special here. */
for (i = 0; i < num_backslashes; i++)
ret = safe_append_char(ret, '\\', &rpos, &rsize);
ret = safe_append_char(ret, *p, &rpos, &rsize);
}
}
ret = safe_append_char(ret, '"', &rpos, &rsize);
ret = safe_append_char(ret, '\0', &rpos, &rsize);
return ret;
}
/* Trivial function that returns nonzero if all characters in str of length strlength are /* Trivial function that returns nonzero if all characters in str of length strlength are
printable (as defined by isprint()) */ printable (as defined by isprint()) */
int stringisprintable(const char *str, int strlength) { int stringisprintable(const char *str, int strlength) {

13
nbase/test/nmakefile Normal file
View File

@@ -0,0 +1,13 @@
# Build nbase in Visual C++ (so ..\nbase.lib exists). Then open a Visual
# Studio Command Prompt (from the Start menu), and run:
# nmake /F nmakefile
!include <win32.mak>
all: test-escape_windows_command_arg
.c.obj:
$(cc) /c /D WIN32=1 /I .. $*.c
test-escape_windows_command_arg: test-escape_windows_command_arg.obj
$(link) /OUT:test-escape_windows_command_arg.exe test-escape_windows_command_arg.obj /NODEFAULTLIB:LIBCMT ..\nbase.lib shell32.lib

204
nbase/test/test-escape_windows_command_arg.c Normal file
View File

@@ -0,0 +1,204 @@
/*
Usage: test-escape_windows_command_arg.exe
This is a test program for the escape_windows_command_arg function from
nbase_str.c. Its code is strictly Windows-specific. Basically, it performs
escape_windows_command_arg on arrays of strings merging its results with spaces
and tests if an attempt to decode them with CommandLineToArgvW results in the
same strings.
*/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include "nbase.h"
#include <shellapi.h>
const char *TESTS[][5] = {
{ NULL },
{"", NULL},
{"", "", NULL},
{"1", "2", "3", "4", NULL},
{"a", "b", "c", NULL},
{"a b", "c", NULL},
{"a b c", NULL},
{" a b c ", NULL},
{"\"quote\"", NULL},
{"back\\slash", NULL},
{"backslash at end\\", NULL},
{"double\"\"quote", NULL},
{" a\nb\tc\rd\ne", NULL},
{"..\\test\\toupper.lua", NULL},
{"backslash at end\\", "som\\ething\"af\\te\\r", NULL},
{"three\\\\\\backslashes", "som\\ething\"af\\te\\r", NULL},
{"three\"\"\"quotes", "som\\ething\"af\\te\\r", NULL},
};
static LPWSTR utf8_to_wchar(const char *s)
{
LPWSTR result;
int size, ret;
/* Get needed buffer size. */
size = MultiByteToWideChar(CP_UTF8, 0, s, -1, NULL, 0);
if (size == 0) {
fprintf(stderr, "MultiByteToWideChar 1 failed: %d\n", GetLastError());
exit(1);
}
result = (LPWSTR) malloc(sizeof(*result) * size);
ret = MultiByteToWideChar(CP_UTF8, 0, s, -1, result, size);
if (ret == 0) {
fprintf(stderr, "MultiByteToWideChar 2 failed: %d\n", GetLastError());
exit(1);
}
return result;
}
static char *wchar_to_utf8(const LPWSTR s)
{
char *result;
int size, ret;
/* Get needed buffer size. */
size = WideCharToMultiByte(CP_UTF8, 0, s, -1, NULL, 0, NULL, NULL);
if (size == 0) {
fprintf(stderr, "WideCharToMultiByte 1 failed: %d\n", GetLastError());
exit(1);
}
result = (char *) malloc(size);
ret = WideCharToMultiByte(CP_UTF8, 0, s, -1, result, size, NULL, NULL);
if (ret == 0) {
fprintf(stderr, "WideCharToMultiByte 2 failed: %d\n", GetLastError());
exit(1);
}
return result;
}
static char **wchar_to_utf8_array(const LPWSTR a[], unsigned int len)
{
char **result;
unsigned int i;
result = (char **) malloc(sizeof(*result) * len);
if (result == NULL)
return NULL;
for (i = 0; i < len; i++)
result[i] = wchar_to_utf8(a[i]);
return result;
}
static unsigned int nullarray_length(const char *a[])
{
unsigned int i;
for (i = 0; a[i] != NULL; i++)
;
return i;
}
static char *append(char *p, const char *s)
{
size_t plen, slen;
plen = strlen(p);
slen = strlen(s);
p = (char *) realloc(p, plen + slen + 1);
if (p == NULL)
return NULL;
return strncat(p, s, plen+slen);
}
/* Turns an array of strings into an escaped flat command line. */
static LPWSTR build_commandline(const char *args[], unsigned int len)
{
unsigned int i;
char *result;
result = strdup("progname");
for (i = 0; i < len; i++) {
result = append(result, " ");
result = append(result, escape_windows_command_arg(args[i]));
}
return utf8_to_wchar(result);
}
static int arrays_equal(const char **a, unsigned int alen, const char **b, unsigned int blen)
{
unsigned int i;
if (alen != blen)
return 0;
for (i = 0; i < alen; i++) {
if (strcmp(a[i], b[i]) != 0)
return 0;
}
return 1;
}
static char *format_array(const char **args, unsigned int len)
{
char *result;
unsigned int i;
result = strdup("");
result = append(result, "{");
for (i = 0; i < len; i++) {
if (i > 0)
result = append(result, ", ");
result = append(result, "[");
result = append(result, args[i]);
result = append(result, "]");
}
result = append(result, "}");
return result;
}
static int run_test(const char *args[])
{
LPWSTR *argvw;
char **result;
int args_len, argvw_len, result_len;
args_len = nullarray_length(args);
argvw = CommandLineToArgvW(build_commandline(args, args_len), &argvw_len);
/* Account for added argv[0] in argvw. */
result = wchar_to_utf8_array(argvw+1, argvw_len-1);
result_len = argvw_len - 1;
if (arrays_equal((const char **) result, result_len, args, args_len)) {
printf("PASS %s\n", format_array(args, args_len));
return 1;
} else {
printf("FAIL got %s\n", format_array((const char **) result, result_len));
printf("expected %s\n", format_array(args, args_len));
return 0;
}
}
int main(int argc, char *argv[])
{
unsigned int num_tests, num_passed;
unsigned int i;
num_tests = 0;
num_passed = 0;
for (i = 0; i < sizeof(TESTS) / sizeof(*TESTS); i++) {
num_tests++;
if (run_test(TESTS[i]))
num_passed++;
}
printf("%ld / %ld tests passed.\n", num_passed, num_tests);
return num_passed == num_tests ? 0 : 1;
}

57
ncat/Makefile.in
View File

@@ -59,6 +59,10 @@ STRIP = @STRIP@
OPENSSL_LIBS = @OPENSSL_LIBS@ OPENSSL_LIBS = @OPENSSL_LIBS@
HAVE_OPENSSL = @HAVE_OPENSSL@ HAVE_OPENSSL = @HAVE_OPENSSL@
PCAP_LIBS = @PCAP_LIBS@ PCAP_LIBS = @PCAP_LIBS@
HAVE_LUA = @LIBLUA_LIBS@
LIBLUADIR = @LIBLUADIR@
LUA_CFLAGS = @LUA_CFLAGS@
CPPFLAGS += $(DEFS) $(INCLS) CPPFLAGS += $(DEFS) $(INCLS)
@@ -78,6 +82,21 @@ OBJS += http_digest.o
DATAFILES = certs/ca-bundle.crt DATAFILES = certs/ca-bundle.crt
endif endif
ifneq ($(HAVE_LUA),)
LUA_SRCS = ncat_lua.c
LUA_OBJS = ncat_lua.o
LUA_LIBS = @LIBLUA_LIBS@ -lm
LUA_CFLAGS += -DHAVE_LUA=1 -I../liblua
else
LUA_SRCS =
LUA_OBJS =
LUA_LIBS =
LUA_CFLAGS =
endif
SRCS += $(LUA_SRCS)
OBJS += $(LUA_OBJS)
TARGET = ncat TARGET = ncat
mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
CONFIG_HEADER = config.h CONFIG_HEADER = config.h
@@ -88,13 +107,17 @@ ifneq ($(HAVE_OPENSSL),)
TEST_PROGS += test/test-wildcard TEST_PROGS += test/test-wildcard
endif endif
all: $(TARGET) $(TEST_PROGS) all: @LUA_BUILD@ $(TARGET) $(TEST_PROGS)
$(TARGET): $(OBJS) $(NSOCKLIB) lua_build: $(LIBLUADIR)/Makefile
$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(OBJS) $(NSOCKLIB) $(NBASELIB) $(OPENSSL_LIBS) $(PCAP_LIBS) $(LIBS) @echo Compiling liblua; cd $(LIBLUADIR) && $(MAKE) liblua.a CC="$(CC)" MYCFLAGS="$(CFLAGS) $(LUA_CFLAGS)"
$(TARGET): @LUA_DEPENDS@ $(OBJS) $(NSOCKLIB)
$(CC) -o $@ $(CFLAGS) $(lua_cflags) $(LDFLAGS) $(OBJS) $(NSOCKLIB) $(NBASELIB) $(OPENSSL_LIBS) $(PCAP_LIBS) $(LUA_LIBS) $(LIBS)
%.o: %.c %.o: %.c
$(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@ $(CC) $(CPPFLAGS) $(LUA_CFLAGS) $(CFLAGS) -c $< -o $@
Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
cd $(top_builddir) \ cd $(top_builddir) \
@@ -112,17 +135,17 @@ config.h:
$(SHELL) ./config.status; \ $(SHELL) ./config.status; \
fi fi
test/addrset: test/addrset.o ncat_core.o sys_wrap.o util.o test/addrset: test/addrset.o ncat_core.o sys_wrap.o util.o $(LUA_OBJS)
$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $^ $(LIBS) $(NSOCKLIB) $(NBASELIB) $(OPENSSL_LIBS) $(PCAP_LIBS) $(CC) -o $@ $(CFLAGS) $(LDFLAGS) $^ $(LIBS) $(NSOCKLIB) $(NBASELIB) $(OPENSSL_LIBS) $(PCAP_LIBS) $(LUA_LIBS)
test/test-uri: test/test-uri.o base64.o http.o ncat_core.o sys_wrap.o util.o test/test-uri: test/test-uri.o base64.o http.o ncat_core.o sys_wrap.o util.o $(LUA_OBJS)
$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $^ $(LIBS) $(NSOCKLIB) $(NBASELIB) $(OPENSSL_LIBS) $(PCAP_LIBS) $(CC) -o $@ $(CFLAGS) $(LDFLAGS) $^ $(LIBS) $(NSOCKLIB) $(NBASELIB) $(OPENSSL_LIBS) $(PCAP_LIBS) $(LUA_LIBS)
test/test-cmdline-split: test/test-cmdline-split.o ncat_posix.o ncat_core.o sys_wrap.o util.o test/test-cmdline-split: test/test-cmdline-split.o ncat_posix.o ncat_core.o sys_wrap.o util.o $(LUA_OBJS)
$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $^ $(LIBS) $(NSOCKLIB) $(NBASELIB) $(OPENSSL_LIBS) $(PCAP_LIBS) $(CC) -o $@ $(CFLAGS) $(LDFLAGS) $^ $(LIBS) $(NSOCKLIB) $(NBASELIB) $(OPENSSL_LIBS) $(PCAP_LIBS) $(LUA_LIBS)
test/test-wildcard: test/test-wildcard.o ncat_core.o ncat_ssl.o sys_wrap.o util.o test/test-wildcard: test/test-wildcard.o ncat_core.o ncat_ssl.o sys_wrap.o util.o $(LUA_OBJS)
$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $^ $(LIBS) $(NSOCKLIB) $(NBASELIB) $(OPENSSL_LIBS) $(PCAP_LIBS) $(CC) -o $@ $(CFLAGS) $(LDFLAGS) $^ $(LIBS) $(NSOCKLIB) $(NBASELIB) $(OPENSSL_LIBS) $(PCAP_LIBS) $(LUA_LIBS)
.PHONY: uninstall all clean distclean .PHONY: uninstall all clean distclean
@@ -158,9 +181,15 @@ uninstall:
ncat_clean: ncat_clean:
$(RM) -f *.o test/*.o $(TARGET) $(TEST_PROGS) $(RM) -f *.o test/*.o $(TARGET) $(TEST_PROGS)
clean: ncat_clean clean: ncat_clean @LUA_CLEAN@
distclean: clean lua_clean:
-cd $(LIBLUADIR) && $(MAKE) clean
lua_dist_clean:
-cd $(LIBLUADIR) && $(MAKE) clean
distclean: clean @LUA_DIST_CLEAN@
-rm -f Makefile makefile.dep $(CONFIG_CLEAN_FILES) -rm -f Makefile makefile.dep $(CONFIG_CLEAN_FILES)
TESTS = ./test-addrset.sh ./test-cmdline-split ./test-uri TESTS = ./test-addrset.sh ./test-cmdline-split ./test-uri

1
ncat/config_win.h
View File

@@ -93,3 +93,4 @@
#define HAVE_OPENSSL 1 #define HAVE_OPENSSL 1
#define HAVE_HTTP_DIGEST 1 #define HAVE_HTTP_DIGEST 1
#define HAVE_LUA 1

682
ncat/configure vendored
View File

@@ -601,6 +601,16 @@ ac_includes_default="\
ac_subst_vars='LTLIBOBJS ac_subst_vars='LTLIBOBJS
LIBOBJS LIBOBJS
LUA_DIST_CLEAN
LUA_CLEAN
LUA_BUILD
LUA_DEPENDS
LIBLUADIR
LIBLUA_LIBS
ac_ct_CXX
CXXFLAGS
CXX
LUA_CFLAGS
PCAP_LIBS PCAP_LIBS
PCAP_DIST_CLEAN PCAP_DIST_CLEAN
PCAP_CLEAN PCAP_CLEAN
@@ -674,6 +684,7 @@ ac_user_opts='
enable_option_checking enable_option_checking
with_openssl with_openssl
with_libpcap with_libpcap
with_liblua
' '
ac_precious_vars='build_alias ac_precious_vars='build_alias
host_alias host_alias
@@ -683,7 +694,10 @@ CFLAGS
LDFLAGS LDFLAGS
LIBS LIBS
CPPFLAGS CPPFLAGS
CPP' CPP
CXX
CXXFLAGS
CCC'
# Initialize some variables set by options. # Initialize some variables set by options.
@@ -1299,6 +1313,11 @@ Optional Packages:
--with-openssl=DIR Use optional openssl libs and includes from DIR/lib/ and DIR/include/openssl/ --with-openssl=DIR Use optional openssl libs and includes from DIR/lib/ and DIR/include/openssl/
--with-libpcap=DIR Look for pcap in DIR/include and DIR/libs. --with-libpcap=DIR Look for pcap in DIR/include and DIR/libs.
--with-libpcap=included Always use version included with Nmap --with-libpcap=included Always use version included with Nmap
--with-liblua=DIR Use an existing (compiled) lua lib from DIR/include
and DIR/lib.
--with-liblua=included Use the liblua version included with Nmap
--without-liblua Compile without lua (this will exclude all of NSE
from compilation)
Some influential environment variables: Some influential environment variables:
CC C compiler command CC C compiler command
@@ -1309,6 +1328,8 @@ Some influential environment variables:
CPPFLAGS (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if CPPFLAGS (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
you have headers in a nonstandard directory <include dir> you have headers in a nonstandard directory <include dir>
CPP C preprocessor CPP C preprocessor
CXX C++ compiler command
CXXFLAGS C++ compiler flags
Use these variables to override the choices made by `configure' or to help Use these variables to override the choices made by `configure' or to help
it to find libraries and programs with nonstandard names/locations. it to find libraries and programs with nonstandard names/locations.
@@ -1837,6 +1858,86 @@ $as_echo "$ac_res" >&6; }
eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
} # ac_fn_c_check_decl } # ac_fn_c_check_decl
# ac_fn_cxx_try_compile LINENO
# ----------------------------
# Try to compile conftest.$ac_ext, and return whether this succeeded.
ac_fn_cxx_try_compile ()
{
as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
rm -f conftest.$ac_objext
if { { ac_try="$ac_compile"
case "(($ac_try" in
*\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
*) ac_try_echo=$ac_try;;
esac
eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
$as_echo "$ac_try_echo"; } >&5
(eval "$ac_compile") 2>conftest.err
ac_status=$?
if test -s conftest.err; then
grep -v '^ *+' conftest.err >conftest.er1
cat conftest.er1 >&5
mv -f conftest.er1 conftest.err
fi
$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; } && {
test -z "$ac_cxx_werror_flag" ||
test ! -s conftest.err
} && test -s conftest.$ac_objext; then :
ac_retval=0
else
$as_echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
ac_retval=1
fi
eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
as_fn_set_status $ac_retval
} # ac_fn_cxx_try_compile
# ac_fn_cxx_try_run LINENO
# ------------------------
# Try to link conftest.$ac_ext, and return whether this succeeded. Assumes
# that executables *can* be run.
ac_fn_cxx_try_run ()
{
as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
if { { ac_try="$ac_link"
case "(($ac_try" in
*\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
*) ac_try_echo=$ac_try;;
esac
eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
$as_echo "$ac_try_echo"; } >&5
(eval "$ac_link") 2>&5
ac_status=$?
$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; } && { ac_try='./conftest$ac_exeext'
{ { case "(($ac_try" in
*\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
*) ac_try_echo=$ac_try;;
esac
eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
$as_echo "$ac_try_echo"; } >&5
(eval "$ac_try") 2>&5
ac_status=$?
$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; }; then :
ac_retval=0
else
$as_echo "$as_me: program exited with status $ac_status" >&5
$as_echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
ac_retval=$ac_status
fi
rm -rf conftest.dSYM conftest_ipa8_conftest.oo
eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
as_fn_set_status $ac_retval
} # ac_fn_cxx_try_run
cat >config.log <<_ACEOF cat >config.log <<_ACEOF
This file contains any messages produced by compilers while This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake. running configure, to aid debugging if configure makes a mistake.
@@ -5052,6 +5153,584 @@ _ACEOF
fi fi
LIBLUADIR=../liblua
have_lua=no
requested_included_lua=no
no_lua=no
# First we test whether they specified liblua explicitly
# Check whether --with-liblua was given.
if test "${with_liblua+set}" = set; then :
withval=$with_liblua; case "$with_liblua" in
yes)
;;
included)
CPPFLAGS="-I\$(top_srcdir)/$LIBLUADIR $CPPFLAGS"
LIBLUA_LIBS="\$(top_srcdir)/$LIBLUADIR/liblua.a"
LUA_DEPENDS="\$(top_srcdir)/$LIBLUADIR/liblua.a"
LUA_BUILD="lua_build"
LUA_CLEAN="lua_clean"
LUA_DIST_CLEAN="lua_dist_clean"
have_lua="yes"
;;
no)
no_lua="yes"
;;
*)
CPPFLAGS="-I$with_liblua/include $CPPFLAGS"
LDFLAGS="-L$with_liblua/lib $LDFLAGS"
;;
esac
fi
LUA_CFLAGS="-DLUA_USE_POSIX -DLUA_USE_DLOPEN"
# OpenSSL and NSE C modules can require dlopen
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing dlopen" >&5
$as_echo_n "checking for library containing dlopen... " >&6; }
if ${ac_cv_search_dlopen+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_func_search_save_LIBS=$LIBS
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
/* Override any GCC internal prototype to avoid an error.
Use char because int might match the return type of a GCC
builtin and then its argument prototype would still apply. */
#ifdef __cplusplus
extern "C"
#endif
char dlopen ();
int
main ()
{
return dlopen ();
;
return 0;
}
_ACEOF
for ac_lib in '' dl; do
if test -z "$ac_lib"; then
ac_res="none required"
else
ac_res=-l$ac_lib
LIBS="-l$ac_lib $ac_func_search_save_LIBS"
fi
if ac_fn_c_try_link "$LINENO"; then :
ac_cv_search_dlopen=$ac_res
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext
if ${ac_cv_search_dlopen+:} false; then :
break
fi
done
if ${ac_cv_search_dlopen+:} false; then :
else
ac_cv_search_dlopen=no
fi
rm conftest.$ac_ext
LIBS=$ac_func_search_save_LIBS
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_dlopen" >&5
$as_echo "$ac_cv_search_dlopen" >&6; }
ac_res=$ac_cv_search_dlopen
if test "$ac_res" != no; then :
test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
fi
# They don't want lua
if test "$no_lua" = "yes"; then
CPPFLAGS="-DNOLUA $CPPFLAGS"
LIBLUA_LIBS=""
LUA_DEPENDS=""
LUA_BUILD=""
LUA_CLEAN=""
LUA_DIST_CLEAN=""
INSTALLNSE=""
else
# If they didn't specify it, we try to find it
if test $have_lua != yes; then
for ac_header in lua.h lua/lua.h lua5.2/lua.h
do :
as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
cat >>confdefs.h <<_ACEOF
#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
_ACEOF
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for lua_yieldk in -llua" >&5
$as_echo_n "checking for lua_yieldk in -llua... " >&6; }
if ${ac_cv_lib_lua_lua_yieldk+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_check_lib_save_LIBS=$LIBS
LIBS="-llua -lm $LIBS"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
/* Override any GCC internal prototype to avoid an error.
Use char because int might match the return type of a GCC
builtin and then its argument prototype would still apply. */
#ifdef __cplusplus
extern "C"
#endif
char lua_yieldk ();
int
main ()
{
return lua_yieldk ();
;
return 0;
}
_ACEOF
if ac_fn_c_try_link "$LINENO"; then :
ac_cv_lib_lua_lua_yieldk=yes
else
ac_cv_lib_lua_lua_yieldk=no
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
LIBS=$ac_check_lib_save_LIBS
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_lua_lua_yieldk" >&5
$as_echo "$ac_cv_lib_lua_lua_yieldk" >&6; }
if test "x$ac_cv_lib_lua_lua_yieldk" = xyes; then :
have_lua=yes; LIBLUA_LIBS="-llua"; CPPFLAGS="-I/usr/include/lua $CPPFLAGS"; break
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for lua_yieldk in -llua52" >&5
$as_echo_n "checking for lua_yieldk in -llua52... " >&6; }
if ${ac_cv_lib_lua52_lua_yieldk+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_check_lib_save_LIBS=$LIBS
LIBS="-llua52 -lm $LIBS"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
/* Override any GCC internal prototype to avoid an error.
Use char because int might match the return type of a GCC
builtin and then its argument prototype would still apply. */
#ifdef __cplusplus
extern "C"
#endif
char lua_yieldk ();
int
main ()
{
return lua_yieldk ();
;
return 0;
}
_ACEOF
if ac_fn_c_try_link "$LINENO"; then :
ac_cv_lib_lua52_lua_yieldk=yes
else
ac_cv_lib_lua52_lua_yieldk=no
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
LIBS=$ac_check_lib_save_LIBS
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_lua52_lua_yieldk" >&5
$as_echo "$ac_cv_lib_lua52_lua_yieldk" >&6; }
if test "x$ac_cv_lib_lua52_lua_yieldk" = xyes; then :
have_lua=yes; LIBLUA_LIBS="-llua52"; CPPFLAGS="-I/usr/include/lua52 $CPPFLAGS"; break
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for lua_yieldk in -llua5.2" >&5
$as_echo_n "checking for lua_yieldk in -llua5.2... " >&6; }
if ${ac_cv_lib_lua5_2_lua_yieldk+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_check_lib_save_LIBS=$LIBS
LIBS="-llua5.2 -lm $LIBS"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
/* Override any GCC internal prototype to avoid an error.
Use char because int might match the return type of a GCC
builtin and then its argument prototype would still apply. */
#ifdef __cplusplus
extern "C"
#endif
char lua_yieldk ();
int
main ()
{
return lua_yieldk ();
;
return 0;
}
_ACEOF
if ac_fn_c_try_link "$LINENO"; then :
ac_cv_lib_lua5_2_lua_yieldk=yes
else
ac_cv_lib_lua5_2_lua_yieldk=no
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
LIBS=$ac_check_lib_save_LIBS
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_lua5_2_lua_yieldk" >&5
$as_echo "$ac_cv_lib_lua5_2_lua_yieldk" >&6; }
if test "x$ac_cv_lib_lua5_2_lua_yieldk" = xyes; then :
have_lua=yes; LIBLUA_LIBS="-llua5.2"; CPPFLAGS="-I/usr/include/lua5.2 $CPPFLAGS"; break
fi
fi
done
ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for lua version >= 502" >&5
$as_echo_n "checking for lua version >= 502... " >&6; }
ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
if test -z "$CXX"; then
if test -n "$CCC"; then
CXX=$CCC
else
if test -n "$ac_tool_prefix"; then
for ac_prog in g++ c++ gpp aCC CC cxx cc++ cl.exe FCC KCC RCC xlC_r xlC
do
# Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
set dummy $ac_tool_prefix$ac_prog; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
if ${ac_cv_prog_CXX+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$CXX"; then
ac_cv_prog_CXX="$CXX" # Let the user override the test.
else
as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
for as_dir in $PATH
do
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
ac_cv_prog_CXX="$ac_tool_prefix$ac_prog"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
fi
done
done
IFS=$as_save_IFS
fi
fi
CXX=$ac_cv_prog_CXX
if test -n "$CXX"; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CXX" >&5
$as_echo "$CXX" >&6; }
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
fi
test -n "$CXX" && break
done
fi
if test -z "$CXX"; then
ac_ct_CXX=$CXX
for ac_prog in g++ c++ gpp aCC CC cxx cc++ cl.exe FCC KCC RCC xlC_r xlC
do
# Extract the first word of "$ac_prog", so it can be a program name with args.
set dummy $ac_prog; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
if ${ac_cv_prog_ac_ct_CXX+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$ac_ct_CXX"; then
ac_cv_prog_ac_ct_CXX="$ac_ct_CXX" # Let the user override the test.
else
as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
for as_dir in $PATH
do
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
ac_cv_prog_ac_ct_CXX="$ac_prog"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
fi
done
done
IFS=$as_save_IFS
fi
fi
ac_ct_CXX=$ac_cv_prog_ac_ct_CXX
if test -n "$ac_ct_CXX"; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CXX" >&5
$as_echo "$ac_ct_CXX" >&6; }
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
fi
test -n "$ac_ct_CXX" && break
done
if test "x$ac_ct_CXX" = x; then
CXX="g++"
else
case $cross_compiling:$ac_tool_warned in
yes:)
{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
ac_tool_warned=yes ;;
esac
CXX=$ac_ct_CXX
fi
fi
fi
fi
# Provide some information about the compiler.
$as_echo "$as_me:${as_lineno-$LINENO}: checking for C++ compiler version" >&5
set X $ac_compile
ac_compiler=$2
for ac_option in --version -v -V -qversion; do
{ { ac_try="$ac_compiler $ac_option >&5"
case "(($ac_try" in
*\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
*) ac_try_echo=$ac_try;;
esac
eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
$as_echo "$ac_try_echo"; } >&5
(eval "$ac_compiler $ac_option >&5") 2>conftest.err
ac_status=$?
if test -s conftest.err; then
sed '10a\
... rest of stderr output deleted ...
10q' conftest.err >conftest.er1
cat conftest.er1 >&5
fi
rm -f conftest.er1 conftest.err
$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }
done
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C++ compiler" >&5
$as_echo_n "checking whether we are using the GNU C++ compiler... " >&6; }
if ${ac_cv_cxx_compiler_gnu+:} false; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int
main ()
{
#ifndef __GNUC__
choke me
#endif
;
return 0;
}
_ACEOF
if ac_fn_cxx_try_compile "$LINENO"; then :
ac_compiler_gnu=yes
else
ac_compiler_gnu=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
ac_cv_cxx_compiler_gnu=$ac_compiler_gnu
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cxx_compiler_gnu" >&5
$as_echo "$ac_cv_cxx_compiler_gnu" >&6; }
if test $ac_compiler_gnu = yes; then
GXX=yes
else
GXX=
fi
ac_test_CXXFLAGS=${CXXFLAGS+set}
ac_save_CXXFLAGS=$CXXFLAGS
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CXX accepts -g" >&5
$as_echo_n "checking whether $CXX accepts -g... " >&6; }
if ${ac_cv_prog_cxx_g+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_save_cxx_werror_flag=$ac_cxx_werror_flag
ac_cxx_werror_flag=yes
ac_cv_prog_cxx_g=no
CXXFLAGS="-g"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int
main ()
{
;
return 0;
}
_ACEOF
if ac_fn_cxx_try_compile "$LINENO"; then :
ac_cv_prog_cxx_g=yes
else
CXXFLAGS=""
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int
main ()
{
;
return 0;
}
_ACEOF
if ac_fn_cxx_try_compile "$LINENO"; then :
else
ac_cxx_werror_flag=$ac_save_cxx_werror_flag
CXXFLAGS="-g"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int
main ()
{
;
return 0;
}
_ACEOF
if ac_fn_cxx_try_compile "$LINENO"; then :
ac_cv_prog_cxx_g=yes
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
ac_cxx_werror_flag=$ac_save_cxx_werror_flag
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cxx_g" >&5
$as_echo "$ac_cv_prog_cxx_g" >&6; }
if test "$ac_test_CXXFLAGS" = set; then
CXXFLAGS=$ac_save_CXXFLAGS
elif test $ac_cv_prog_cxx_g = yes; then
if test "$GXX" = yes; then
CXXFLAGS="-g -O2"
else
CXXFLAGS="-g"
fi
else
if test "$GXX" = yes; then
CXXFLAGS="-O2"
else
CXXFLAGS=
fi
fi
ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
if test "$cross_compiling" = yes; then :
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: cross-compiling -- assuming yes" >&5
$as_echo "cross-compiling -- assuming yes" >&6; }; have_lua=yes
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <lua.h>
int
main ()
{
if(LUA_VERSION_NUM < 502) return 1;
;
return 0;
}
_ACEOF
if ac_fn_cxx_try_run "$LINENO"; then :
have_lua=yes
else
have_lua=no
fi
rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
conftest.$ac_objext conftest.beam conftest.$ac_ext
fi
ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_c_compiler_gnu
LUA_DEPENDS=""
LUA_BUILD=""
LUA_CLEAN=""
LUA_DIST_CLEAN=""
fi
# if we didn't find we use our own
if test $have_lua != yes; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
CPPFLAGS="-I\$(top_srcdir)/$LIBLUADIR $CPPFLAGS"
LIBLUA_LIBS="\$(top_srcdir)/$LIBLUADIR/liblua.a"
LUA_DEPENDS="\$(top_srcdir)/$LIBLUADIR/liblua.a"
LUA_BUILD="lua_build"
LUA_CLEAN="lua_clean"
LUA_DIST_CLEAN="lua_dist_clean"
$as_echo "#define LUA_INCLUDED 1" >>confdefs.h
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
fi
INSTALLNSE="install-nse"
fi
ac_config_files="$ac_config_files Makefile" ac_config_files="$ac_config_files Makefile"
cat >confcache <<\_ACEOF cat >confcache <<\_ACEOF
@@ -6348,4 +7027,5 @@ fi
if test -f docs/ncat-ascii-art.txt; then if test -f docs/ncat-ascii-art.txt; then
cat docs/ncat-ascii-art.txt cat docs/ncat-ascii-art.txt
fi fi
echo "Configuration complete." echo "Configuration complete."

103
ncat/configure.ac
View File

@@ -203,10 +203,113 @@ AC_CHECK_LIB(odm, odm_initialize)
AC_CHECK_LIB(odm, odm_initialize) AC_CHECK_LIB(odm, odm_initialize)
AC_CHECK_LIB(cfg, _system_configuration) AC_CHECK_LIB(cfg, _system_configuration)
LIBLUADIR=../liblua
have_lua=no
requested_included_lua=no
no_lua=no
# First we test whether they specified liblua explicitly
AC_ARG_WITH(liblua,
AC_HELP_STRING([--with-liblua=DIR], [Use an existing (compiled) lua lib from DIR/include and DIR/lib.])
AC_HELP_STRING([--with-liblua=included], [Use the liblua version included with Nmap])
AC_HELP_STRING([--without-liblua], [Compile without lua (this will exclude all of NSE from compilation)]),
[ case "$with_liblua" in
yes)
;;
included)
CPPFLAGS="-I\$(top_srcdir)/$LIBLUADIR $CPPFLAGS"
LIBLUA_LIBS="\$(top_srcdir)/$LIBLUADIR/liblua.a"
LUA_DEPENDS="\$(top_srcdir)/$LIBLUADIR/liblua.a"
LUA_BUILD="lua_build"
LUA_CLEAN="lua_clean"
LUA_DIST_CLEAN="lua_dist_clean"
have_lua="yes"
;;
no)
no_lua="yes"
;;
*)
CPPFLAGS="-I$with_liblua/include $CPPFLAGS"
LDFLAGS="-L$with_liblua/lib $LDFLAGS"
;;
esac]
)
LUA_CFLAGS="-DLUA_USE_POSIX -DLUA_USE_DLOPEN"
AC_SUBST(LUA_CFLAGS)
# OpenSSL and NSE C modules can require dlopen
AC_SEARCH_LIBS(dlopen, dl)
# They don't want lua
if test "$no_lua" = "yes"; then
CPPFLAGS="-DNOLUA $CPPFLAGS"
LIBLUA_LIBS=""
LUA_DEPENDS=""
LUA_BUILD=""
LUA_CLEAN=""
LUA_DIST_CLEAN=""
INSTALLNSE=""
else
# If they didn't specify it, we try to find it
if test $have_lua != yes; then
AC_CHECK_HEADERS([lua.h lua/lua.h lua5.2/lua.h],
AC_CHECK_LIB(lua, lua_yieldk, [have_lua=yes; LIBLUA_LIBS="-llua"; CPPFLAGS="-I/usr/include/lua $CPPFLAGS"; break],, [-lm])
AC_CHECK_LIB(lua52, lua_yieldk, [have_lua=yes; LIBLUA_LIBS="-llua52"; CPPFLAGS="-I/usr/include/lua52 $CPPFLAGS"; break],, [-lm])
AC_CHECK_LIB(lua5.2, lua_yieldk, [have_lua=yes; LIBLUA_LIBS="-llua5.2"; CPPFLAGS="-I/usr/include/lua5.2 $CPPFLAGS"; break],, [-lm])
)
AC_LANG_PUSH(C++)
AC_MSG_CHECKING([for lua version >= 502])
AC_RUN_IFELSE([ AC_LANG_PROGRAM(
[[#include <lua.h>]],
[[if(LUA_VERSION_NUM < 502) return 1;]])],
have_lua=yes, have_lua=no, AC_MSG_RESULT(cross-compiling -- assuming yes); have_lua=yes)
AC_LANG_POP(C++)
LUA_DEPENDS=""
LUA_BUILD=""
LUA_CLEAN=""
LUA_DIST_CLEAN=""
fi
# if we didn't find we use our own
if test $have_lua != yes; then
AC_MSG_RESULT(no)
CPPFLAGS="-I\$(top_srcdir)/$LIBLUADIR $CPPFLAGS"
LIBLUA_LIBS="\$(top_srcdir)/$LIBLUADIR/liblua.a"
LUA_DEPENDS="\$(top_srcdir)/$LIBLUADIR/liblua.a"
LUA_BUILD="lua_build"
LUA_CLEAN="lua_clean"
LUA_DIST_CLEAN="lua_dist_clean"
AC_DEFINE(LUA_INCLUDED)
else
AC_MSG_RESULT(yes)
fi
INSTALLNSE="install-nse"
fi
AC_SUBST(LIBLUA_LIBS)
AC_SUBST(LIBLUADIR)
AC_SUBST(LUA_DEPENDS)
AC_SUBST(LUA_BUILD)
AC_SUBST(LUA_CLEAN)
AC_SUBST(LUA_DIST_CLEAN)
AC_CONFIG_FILES(Makefile) AC_CONFIG_FILES(Makefile)
AC_OUTPUT AC_OUTPUT
# NCAT ASCII ART # NCAT ASCII ART
if test -f docs/ncat-ascii-art.txt; then if test -f docs/ncat-ascii-art.txt; then
cat docs/ncat-ascii-art.txt cat docs/ncat-ascii-art.txt
fi fi
echo "Configuration complete." echo "Configuration complete."

1
ncat/docs/ncat.usage.txt
View File

@@ -44,6 +44,7 @@ Options taking a time assume seconds. Append 'ms' for milliseconds,
--ssl-key Specify SSL private key (PEM) for listening --ssl-key Specify SSL private key (PEM) for listening
--ssl-verify Verify trust and domain name of certificates --ssl-verify Verify trust and domain name of certificates
--ssl-trustfile PEM file containing trusted SSL certificates --ssl-trustfile PEM file containing trusted SSL certificates
--lua-exec Execute a .lua Ncat script
--version Display Ncat's version information and exit --version Display Ncat's version information and exit
See the ncat(1) manpage for full options, descriptions and usage examples See the ncat(1) manpage for full options, descriptions and usage examples

13
ncat/docs/ncat.xml
View File

@@ -479,6 +479,19 @@
like environment variables are available.</para> like environment variables are available.</para>
</listitem> </listitem>
</varlistentry> </varlistentry>
<varlistentry>
<term>
<option>--lua-exec <replaceable>file</replaceable></option> (Execute a .lua script)
<indexterm><primary><option>--lua-exec</option> (Ncat option)</primary></indexterm>
</term>
<listitem>
<para>Runs the specified file as a Lua script after a connection has been
established, using a built-in interpreter. Both the script's standard input and
the standard output are redirected to the connection data streams.</para>
</listitem>
</varlistentry>
</variablelist> </variablelist>
</refsect1> </refsect1>

13
ncat/ncat.vcxproj
View File

@@ -70,7 +70,7 @@
</Midl> </Midl>
<ClCompile> <ClCompile>
<Optimization>Disabled</Optimization> <Optimization>Disabled</Optimization>
<AdditionalIncludeDirectories>.;..;../nbase;..\nsock\include;..\mswin32\pcap-include;..\..\nmap-mswin32-aux\OpenSSL\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories> <AdditionalIncludeDirectories>.;..;../nbase;..\nsock\include;..\mswin32\pcap-include;..\..\nmap-mswin32-aux\OpenSSL\include;..\liblua;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<PreprocessorDefinitions>WIN32;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions> <PreprocessorDefinitions>WIN32;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks> <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
<RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary> <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -90,10 +90,10 @@
</ResourceOutputFileName> </ResourceOutputFileName>
</ResourceCompile> </ResourceCompile>
<Link> <Link>
<AdditionalDependencies>nbase.lib;ws2_32.lib;IPHlpAPI.Lib;wpcap.lib;nsock.lib;advapi32.lib;libeay32.lib;ssleay32.lib</AdditionalDependencies> <AdditionalDependencies>nbase.lib;ws2_32.lib;IPHlpAPI.Lib;wpcap.lib;nsock.lib;advapi32.lib;libeay32.lib;ssleay32.lib;liblua.lib</AdditionalDependencies>
<OutputFile>.\Debug\ncat.exe</OutputFile> <OutputFile>.\Debug\ncat.exe</OutputFile>
<SuppressStartupBanner>true</SuppressStartupBanner> <SuppressStartupBanner>true</SuppressStartupBanner>
<AdditionalLibraryDirectories>..\mswin32\lib;..\nsock;..\nbase;..\..\nmap-mswin32-aux\OpenSSL\lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories> <AdditionalLibraryDirectories>..\mswin32\lib;..\nsock;..\nbase;..\..\nmap-mswin32-aux\OpenSSL\lib;..\liblua;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
<IgnoreSpecificDefaultLibraries>%(IgnoreSpecificDefaultLibraries)</IgnoreSpecificDefaultLibraries> <IgnoreSpecificDefaultLibraries>%(IgnoreSpecificDefaultLibraries)</IgnoreSpecificDefaultLibraries>
<DelayLoadDLLs>wpcap.dll;%(DelayLoadDLLs)</DelayLoadDLLs> <DelayLoadDLLs>wpcap.dll;%(DelayLoadDLLs)</DelayLoadDLLs>
<GenerateDebugInformation>true</GenerateDebugInformation> <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -117,7 +117,7 @@
<ClCompile> <ClCompile>
<Optimization>MaxSpeed</Optimization> <Optimization>MaxSpeed</Optimization>
<InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion> <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
<AdditionalIncludeDirectories>.;..;../nbase;..\nsock\include;..\mswin32\pcap-include;..\..\nmap-mswin32-aux\OpenSSL\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories> <AdditionalIncludeDirectories>.;..;../nbase;..\nsock\include;..\mswin32\pcap-include;..\..\nmap-mswin32-aux\OpenSSL\include;..\liblua;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<PreprocessorDefinitions>WIN32;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions> <PreprocessorDefinitions>WIN32;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<StringPooling>true</StringPooling> <StringPooling>true</StringPooling>
<FunctionLevelLinking>true</FunctionLevelLinking> <FunctionLevelLinking>true</FunctionLevelLinking>
@@ -198,6 +198,7 @@
<ClCompile Include="ncat_core.c" /> <ClCompile Include="ncat_core.c" />
<ClCompile Include="ncat_exec_win.c" /> <ClCompile Include="ncat_exec_win.c" />
<ClCompile Include="ncat_listen.c" /> <ClCompile Include="ncat_listen.c" />
<ClCompile Include="ncat_lua.c" />
<ClCompile Include="ncat_main.c" /> <ClCompile Include="ncat_main.c" />
<ClCompile Include="ncat_proxy.c" /> <ClCompile Include="ncat_proxy.c" />
<ClCompile Include="ncat_ssl.c" /> <ClCompile Include="ncat_ssl.c" />
@@ -215,6 +216,7 @@
<ClInclude Include="ncat_core.h" /> <ClInclude Include="ncat_core.h" />
<ClInclude Include="ncat_exec.h" /> <ClInclude Include="ncat_exec.h" />
<ClInclude Include="ncat_listen.h" /> <ClInclude Include="ncat_listen.h" />
<ClInclude Include="ncat_lua.h" />
<ClInclude Include="ncat_proxy.h" /> <ClInclude Include="ncat_proxy.h" />
<ClInclude Include="ncat_ssl.h" /> <ClInclude Include="ncat_ssl.h" />
<ClInclude Include="..\mswin32\packet_types.h" /> <ClInclude Include="..\mswin32\packet_types.h" />
@@ -240,6 +242,9 @@
</CustomBuild> </CustomBuild>
</ItemGroup> </ItemGroup>
<ItemGroup> <ItemGroup>
<ProjectReference Include="..\liblua\liblua.vcxproj">
<Project>{31fb0767-a71f-4575-8379-002d72b8af86}</Project>
</ProjectReference>
<ProjectReference Include="..\nbase\nbase.vcxproj"> <ProjectReference Include="..\nbase\nbase.vcxproj">
<Project>{b630c8f7-3138-43e8-89ed-78742fa2ac5f}</Project> <Project>{b630c8f7-3138-43e8-89ed-78742fa2ac5f}</Project>
<ReferenceOutputAssembly>false</ReferenceOutputAssembly> <ReferenceOutputAssembly>false</ReferenceOutputAssembly>

2
ncat/ncat_core.c
View File

@@ -166,7 +166,7 @@ void options_init(void)
o.conntimeout = DEFAULT_CONNECT_TIMEOUT; o.conntimeout = DEFAULT_CONNECT_TIMEOUT;
o.cmdexec = NULL; o.cmdexec = NULL;
o.shellexec = 0; o.execmode = EXEC_PLAIN;
o.proxy_auth = NULL; o.proxy_auth = NULL;
o.proxytype = NULL; o.proxytype = NULL;

9
ncat/ncat_core.h
View File

@@ -110,6 +110,12 @@ extern size_t targetsslen;
extern union sockaddr_u httpconnect, socksconnect; extern union sockaddr_u httpconnect, socksconnect;
extern size_t httpconnectlen, socksconnectlen; extern size_t httpconnectlen, socksconnectlen;
enum exec_mode {
EXEC_PLAIN,
EXEC_SHELL,
EXEC_LUA,
};
struct options { struct options {
unsigned short portno; unsigned short portno;
@@ -152,8 +158,9 @@ struct options {
int conn_limit; int conn_limit;
int conntimeout; int conntimeout;
/* When execmode == EXEC_LUA, cmdexec is the name of the file to run. */
char *cmdexec; char *cmdexec;
int shellexec; enum exec_mode execmode;
char *proxy_auth; char *proxy_auth;
char *proxytype; char *proxytype;

28
ncat/ncat_exec_win.c
View File

@@ -315,7 +315,7 @@ static int start_subprocess(char *cmdexec, struct subprocess_info *info)
char *cmdbuf; char *cmdbuf;
int pid; int pid;
if (o.shellexec) { if (o.execmode == EXEC_SHELL) {
/* Run with cmd.exe. */ /* Run with cmd.exe. */
const char *shell; const char *shell;
size_t cmdlen; size_t cmdlen;
@@ -324,6 +324,32 @@ static int start_subprocess(char *cmdexec, struct subprocess_info *info)
cmdlen = strlen(shell) + strlen(cmdexec) + 32; cmdlen = strlen(shell) + strlen(cmdexec) + 32;
cmdbuf = (char *) safe_malloc(cmdlen); cmdbuf = (char *) safe_malloc(cmdlen);
Snprintf(cmdbuf, cmdlen, "%s /C %s", shell, cmdexec); Snprintf(cmdbuf, cmdlen, "%s /C %s", shell, cmdexec);
#ifdef HAVE_LUA
} else if (o.execmode == EXEC_LUA) {
char exepath[8192];
char *cmdexec_escaped, *exepath_escaped;
int n;
n = GetModuleFileName(GetModuleHandle(0), exepath, sizeof(exepath));
if (n == 0 || n == sizeof(exepath))
return -1;
cmdexec_escaped = escape_windows_command_arg(cmdexec);
if (cmdexec_escaped == NULL)
return -1;
exepath_escaped = escape_windows_command_arg(exepath);
if (exepath_escaped == NULL) {
free(cmdexec_escaped);
return -1;
}
n = asprintf(&cmdbuf, "%s --lua-exec-internal %s", exepath_escaped, cmdexec_escaped);
free(cmdexec_escaped);
free(exepath_escaped);
if (n < 0)
return -1;
#endif
} else { } else {
cmdbuf = cmdexec; cmdbuf = cmdexec;
} }

150
ncat/ncat_lua.c Normal file
View File

@@ -0,0 +1,150 @@
/***************************************************************************
* ncat_lua.c -- ncat lua facilities *
***********************IMPORTANT NMAP LICENSE TERMS************************
* *
* The Nmap Security Scanner is (C) 1996-2012 Insecure.Com LLC. Nmap is *
* also a registered trademark of Insecure.Com LLC. This program is free *
* software; you may redistribute and/or modify it under the terms of the *
* GNU General Public License as published by the Free Software *
* Foundation; Version 2 with the clarifications and exceptions described *
* below. This guarantees your right to use, modify, and redistribute *
* this software under certain conditions. If you wish to embed Nmap *
* technology into proprietary software, we sell alternative licenses *
* (contact sales@insecure.com). Dozens of software vendors already *
* license Nmap technology such as host discovery, port scanning, OS *
* detection, version detection, and the Nmap Scripting Engine. *
* *
* Note that the GPL places important restrictions on "derived works", yet *
* it does not provide a detailed definition of that term. To avoid *
* misunderstandings, we interpret that term as broadly as copyright law *
* allows. For example, we consider an application to constitute a *
* "derivative work" for the purpose of this license if it does any of the *
* following: *
* o Integrates source code from Nmap *
* o Reads or includes Nmap copyrighted data files, such as *
* nmap-os-db or nmap-service-probes. *
* o Executes Nmap and parses the results (as opposed to typical shell or *
* execution-menu apps, which simply display raw Nmap output and so are *
* not derivative works.) *
* o Integrates/includes/aggregates Nmap into a proprietary executable *
* installer, such as those produced by InstallShield. *
* o Links to a library or executes a program that does any of the above *
* *
* The term "Nmap" should be taken to also include any portions or derived *
* works of Nmap, as well as other software we distribute under this *
* license such as Zenmap, Ncat, and Nping. This list is not exclusive, *
* but is meant to clarify our interpretation of derived works with some *
* common examples. Our interpretation applies only to Nmap--we don't *
* speak for other people's GPL works. *
* *
* If you have any questions about the GPL licensing restrictions on using *
* Nmap in non-GPL works, we would be happy to help. As mentioned above, *
* we also offer alternative license to integrate Nmap into proprietary *
* applications and appliances. These contracts have been sold to dozens *
* of software vendors, and generally include a perpetual license as well *
* as providing for priority support and updates. They also fund the *
* continued development of Nmap. Please email sales@insecure.com for *
* further information. *
* *
* As a special exception to the GPL terms, Insecure.Com LLC grants *
* permission to link the code of this program with any version of the *
* OpenSSL library which is distributed under a license identical to that *
* listed in the included docs/licenses/OpenSSL.txt file, and distribute *
* linked combinations including the two. You must obey the GNU GPL in all *
* respects for all of the code used other than OpenSSL. If you modify *
* this file, you may extend this exception to your version of the file, *
* but you are not obligated to do so. *
* *
* If you received these files with a written license agreement or *
* contract stating terms other than the terms above, then that *
* alternative license agreement takes precedence over these comments. *
* *
* Source is provided to this software because we believe users have a *
* right to know exactly what a program is going to do before they run it. *
* This also allows you to audit the software for security holes (none *
* have been found so far). *
* *
* Source code also allows you to port Nmap to new platforms, fix bugs, *
* and add new features. You are highly encouraged to send your changes *
* to the dev@nmap.org mailing list for possible incorporation into the *
* main distribution. By sending these changes to Fyodor or one of the *
* Insecure.Org development mailing lists, or checking them into the Nmap *
* source code repository, it is understood (unless you specify otherwise) *
* that you are offering the Nmap Project (Insecure.Com LLC) the *
* unlimited, non-exclusive right to reuse, modify, and relicense the *
* code. Nmap will always be available Open Source, but this is important *
* because the inability to relicense code has caused devastating problems *
* for other Free Software projects (such as KDE and NASM). We also *
* occasionally relicense the code to third parties as discussed above. *
* If you wish to specify special license conditions of your *
* contributions, just say so when you send them. *
* *
* This program is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the Nmap *
* license file for more details (it's in a COPYING file included with *
* Nmap, and also available from https://svn.nmap.org/nmap/COPYING *
* *
***************************************************************************/
/* $Id$ */
#include "ncat.h"
#include "ncat_lua.h"
static lua_State *L;
static int last_function_number;
static void report(char *prefix)
{
const char *errormsg;
errormsg = lua_tostring(L, -1);
if (errormsg == NULL)
errormsg = "(error object is not a string)";
bye("%s: %s.", prefix, errormsg);
}
static int traceback (lua_State *L)
{
const char *msg;
msg = lua_tostring(L, 1);
if (msg) {
luaL_traceback(L, L, msg, 1);
} else {
if (!lua_isnoneornil(L, 1)) { /* is there an error object? */
if (!luaL_callmeta(L, 1, "__tostring")) /* try its 'tostring' metamethod */
lua_pushliteral(L, "(no error message)");
}
}
return 1;
}
void lua_setup(void)
{
ncat_assert(o.cmdexec!=NULL);
L = luaL_newstate();
luaL_openlibs(L);
if (luaL_loadfile(L,o.cmdexec) != 0)
report("Error loading the Lua script");
/* install the traceback function */
last_function_number = lua_gettop(L);
lua_pushcfunction(L, traceback);
lua_insert(L, last_function_number);
}
void lua_run(void)
{
if (lua_pcall(L, 0, 0, last_function_number) != LUA_OK && !lua_isnil(L, -1)) {
/* handle the error; the code below is taken from lua.c, Lua source code */
lua_remove(L, last_function_number);
report("Error running the Lua script");
} else {
if (o.debug)
logdebug("%s returned successfully.\n", o.cmdexec);
lua_close(L);
exit(EXIT_SUCCESS);
}
}

112
ncat/ncat_lua.h Normal file
View File

@@ -0,0 +1,112 @@
/***************************************************************************
* ncat_lua.h -- ncat lua facilities header file *
***********************IMPORTANT NMAP LICENSE TERMS************************
* *
* The Nmap Security Scanner is (C) 1996-2012 Insecure.Com LLC. Nmap is *
* also a registered trademark of Insecure.Com LLC. This program is free *
* software; you may redistribute and/or modify it under the terms of the *
* GNU General Public License as published by the Free Software *
* Foundation; Version 2 with the clarifications and exceptions described *
* below. This guarantees your right to use, modify, and redistribute *
* this software under certain conditions. If you wish to embed Nmap *
* technology into proprietary software, we sell alternative licenses *
* (contact sales@insecure.com). Dozens of software vendors already *
* license Nmap technology such as host discovery, port scanning, OS *
* detection, version detection, and the Nmap Scripting Engine. *
* *
* Note that the GPL places important restrictions on "derived works", yet *
* it does not provide a detailed definition of that term. To avoid *
* misunderstandings, we interpret that term as broadly as copyright law *
* allows. For example, we consider an application to constitute a *
* "derivative work" for the purpose of this license if it does any of the *
* following: *
* o Integrates source code from Nmap *
* o Reads or includes Nmap copyrighted data files, such as *
* nmap-os-db or nmap-service-probes. *
* o Executes Nmap and parses the results (as opposed to typical shell or *
* execution-menu apps, which simply display raw Nmap output and so are *
* not derivative works.) *
* o Integrates/includes/aggregates Nmap into a proprietary executable *
* installer, such as those produced by InstallShield. *
* o Links to a library or executes a program that does any of the above *
* *
* The term "Nmap" should be taken to also include any portions or derived *
* works of Nmap, as well as other software we distribute under this *
* license such as Zenmap, Ncat, and Nping. This list is not exclusive, *
* but is meant to clarify our interpretation of derived works with some *
* common examples. Our interpretation applies only to Nmap--we don't *
* speak for other people's GPL works. *
* *
* If you have any questions about the GPL licensing restrictions on using *
* Nmap in non-GPL works, we would be happy to help. As mentioned above, *
* we also offer alternative license to integrate Nmap into proprietary *
* applications and appliances. These contracts have been sold to dozens *
* of software vendors, and generally include a perpetual license as well *
* as providing for priority support and updates. They also fund the *
* continued development of Nmap. Please email sales@insecure.com for *
* further information. *
* *
* As a special exception to the GPL terms, Insecure.Com LLC grants *
* permission to link the code of this program with any version of the *
* OpenSSL library which is distributed under a license identical to that *
* listed in the included docs/licenses/OpenSSL.txt file, and distribute *
* linked combinations including the two. You must obey the GNU GPL in all *
* respects for all of the code used other than OpenSSL. If you modify *
* this file, you may extend this exception to your version of the file, *
* but you are not obligated to do so. *
* *
* If you received these files with a written license agreement or *
* contract stating terms other than the terms above, then that *
* alternative license agreement takes precedence over these comments. *
* *
* Source is provided to this software because we believe users have a *
* right to know exactly what a program is going to do before they run it. *
* This also allows you to audit the software for security holes (none *
* have been found so far). *
* *
* Source code also allows you to port Nmap to new platforms, fix bugs, *
* and add new features. You are highly encouraged to send your changes *
* to the dev@nmap.org mailing list for possible incorporation into the *
* main distribution. By sending these changes to Fyodor or one of the *
* Insecure.Org development mailing lists, or checking them into the Nmap *
* source code repository, it is understood (unless you specify otherwise) *
* that you are offering the Nmap Project (Insecure.Com LLC) the *
* unlimited, non-exclusive right to reuse, modify, and relicense the *
* code. Nmap will always be available Open Source, but this is important *
* because the inability to relicense code has caused devastating problems *
* for other Free Software projects (such as KDE and NASM). We also *
* occasionally relicense the code to third parties as discussed above. *
* If you wish to specify special license conditions of your *
* contributions, just say so when you send them. *
* *
* This program is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the Nmap *
* license file for more details (it's in a COPYING file included with *
* Nmap, and also available from https://svn.nmap.org/nmap/COPYING *
* *
***************************************************************************/
/* $Id$ */
#ifndef _NCAT_LUA_H
#define _NCAT_LUA_H
#include "ncat.h"
#ifdef __cplusplus
extern "C" {
#endif
#include "lua.h"
#include "lualib.h"
#include "lauxlib.h"
#ifdef __cplusplus
}
#endif
void lua_setup(void);
void lua_run(void);
#endif

48
ncat/ncat_main.c
View File

@@ -114,6 +114,10 @@
#include <openssl/err.h> #include <openssl/err.h>
#endif #endif
#ifdef HAVE_LUA
#include "ncat_lua.h"
#endif
static int ncat_connect_mode(void); static int ncat_connect_mode(void);
static int ncat_listen_mode(void); static int ncat_listen_mode(void);
@@ -238,6 +242,10 @@ int main(int argc, char *argv[])
{"G", required_argument, NULL, 'G'}, {"G", required_argument, NULL, 'G'},
{"exec", required_argument, NULL, 'e'}, {"exec", required_argument, NULL, 'e'},
{"sh-exec", required_argument, NULL, 'c'}, {"sh-exec", required_argument, NULL, 'c'},
#ifdef HAVE_LUA
{"lua-exec", required_argument, NULL, 0},
{"lua-exec-internal",required_argument, NULL, 0},
#endif
{"max-conns", required_argument, NULL, 'm'}, {"max-conns", required_argument, NULL, 'm'},
{"help", no_argument, NULL, 'h'}, {"help", no_argument, NULL, 'h'},
{"delay", required_argument, NULL, 'd'}, {"delay", required_argument, NULL, 'd'},
@@ -317,11 +325,16 @@ int main(int argc, char *argv[])
o.crlf = 1; o.crlf = 1;
break; break;
case 'c': case 'c':
if (o.cmdexec != NULL)
bye("Only one of --exec, --sh-exec, and --lua-exec is allowed.");
o.cmdexec = optarg; o.cmdexec = optarg;
o.shellexec = 1; o.execmode = EXEC_SHELL;
break; break;
case 'e': case 'e':
if (o.cmdexec != NULL)
bye("Only one of --exec, --sh-exec, and --lua-exec is allowed.");
o.cmdexec = optarg; o.cmdexec = optarg;
o.execmode = EXEC_PLAIN;
break; break;
case 'g': { case 'g': {
char *a = strtok(optarg, ","); char *a = strtok(optarg, ",");
@@ -470,6 +483,29 @@ int main(int argc, char *argv[])
verification. */ verification. */
o.sslverify = 1; o.sslverify = 1;
} }
#endif
#ifdef HAVE_LUA
else if (strcmp(long_options[option_index].name, "lua-exec") == 0) {
if (o.cmdexec != NULL)
bye("Only one of --exec, --sh-exec, and --lua-exec is allowed.");
o.cmdexec = optarg;
o.execmode = EXEC_LUA;
}
else if (strcmp(long_options[option_index].name, "lua-exec-internal") == 0) {
/* This command-line switch is undocumented on purpose. Do NOT use it
explicitly as its behavior might differ between Ncat releases.
Its goal is to switch the Ncat process to the Lua interpreter state
so that its standard output and input can be redirected to
particular connection's streams. Although it is implemented by
forking in POSIX builds, Windows does not have the fork() system
call and thus requires this workaround. More info here:
http://seclists.org/nmap-dev/2013/q2/492 */
ncat_assert(argc == 3);
o.cmdexec = argv[2];
lua_setup();
lua_run();
}
#endif #endif
break; break;
case 'h': case 'h':
@@ -487,6 +523,9 @@ int main(int argc, char *argv[])
" -C, --crlf Use CRLF for EOL sequence\n" " -C, --crlf Use CRLF for EOL sequence\n"
" -c, --sh-exec <command> Executes the given command via /bin/sh\n" " -c, --sh-exec <command> Executes the given command via /bin/sh\n"
" -e, --exec <command> Executes the given command\n" " -e, --exec <command> Executes the given command\n"
#ifdef HAVE_LUA
" --lua-exec <filename> Executes the given Lua script\n"
#endif
" -g hop1[,hop2,...] Loose source routing hop points (8 max)\n" " -g hop1[,hop2,...] Loose source routing hop points (8 max)\n"
" -G <n> Loose source routing hop pointer (4, 8, 12, ...)\n" " -G <n> Loose source routing hop pointer (4, 8, 12, ...)\n"
" -m, --max-conns <n> Maximum <n> simultaneous connections\n" " -m, --max-conns <n> Maximum <n> simultaneous connections\n"
@@ -787,6 +826,11 @@ connection brokering should work.");
the console. A no-op on Unix. */ the console. A no-op on Unix. */
set_lf_mode(); set_lf_mode();
#ifdef HAVE_LUA
if (o.execmode == EXEC_LUA)
lua_setup();
#endif
if (o.listen) if (o.listen)
return ncat_listen_mode(); return ncat_listen_mode();
else else
@@ -838,7 +882,7 @@ static int ncat_listen_mode(void)
#ifndef WIN32 #ifndef WIN32
/* See if the shell is executable before we get deep into this */ /* See if the shell is executable before we get deep into this */
if (o.shellexec && access("/bin/sh", X_OK) == -1) if (o.execmode == EXEC_SHELL && access("/bin/sh", X_OK) == -1)
bye("/bin/sh is not executable, so `-c' won't work."); bye("/bin/sh is not executable, so `-c' won't work.");
#endif #endif

28
ncat/ncat_posix.c
View File

@@ -90,6 +90,7 @@
/* $Id$ */ /* $Id$ */
#include "ncat.h" #include "ncat.h"
#include "ncat_lua.h"
char **cmdline_split(const char *cmdexec); char **cmdline_split(const char *cmdexec);
@@ -153,10 +154,19 @@ void netexec(struct fdinfo *info, char *cmdexec)
int maxfd; int maxfd;
if (o.debug) { if (o.debug) {
if (o.shellexec) switch (o.execmode) {
case EXEC_SHELL:
logdebug("Executing with shell: %s\n", cmdexec); logdebug("Executing with shell: %s\n", cmdexec);
else break;
#ifdef HAVE_LUA
case EXEC_LUA:
logdebug("Executing as lua script: %s\n", cmdexec);
break;
#endif
default:
logdebug("Executing: %s\n", cmdexec); logdebug("Executing: %s\n", cmdexec);
break;
}
} }
if (pipe(child_stdin) == -1 || pipe(child_stdout) == -1) if (pipe(child_stdin) == -1 || pipe(child_stdout) == -1)
@@ -174,13 +184,21 @@ void netexec(struct fdinfo *info, char *cmdexec)
Dup2(child_stdin[0], STDIN_FILENO); Dup2(child_stdin[0], STDIN_FILENO);
Dup2(child_stdout[1], STDOUT_FILENO); Dup2(child_stdout[1], STDOUT_FILENO);
if (o.shellexec) { switch (o.execmode) {
execl("/bin/sh", "sh", "-c", cmdexec, (void *) NULL);
} else {
char **cmdargs; char **cmdargs;
case EXEC_SHELL:
execl("/bin/sh", "sh", "-c", cmdexec, (void *) NULL);
break;
#ifdef HAVE_LUA
case EXEC_LUA:
lua_run();
break;
#endif
default:
cmdargs = cmdline_split(cmdexec); cmdargs = cmdline_split(cmdexec);
execv(cmdargs[0], cmdargs); execv(cmdargs[0], cmdargs);
break;
} }
/* exec failed. */ /* exec failed. */

33
ncat/scripts/conditional.lua Normal file
View File

@@ -0,0 +1,33 @@
--This is another --lua-exec demo. It displays a menu to a user, waits for her
--input and makes a decision according to what the user entered. All happens
--in an infinite loop.
while true do
print("Here's a menu for you: ")
print("1. Repeat the menu.")
print("0. Exit.")
io.write("Please enter your choice: ")
io.flush(io.stdout)
i = io.read()
--WARNING! Without this line, the script will go into an infinite loop
--that keeps consuming system resources when the connection gets broken.
--Ncat's subprocesses are NOT killed in this case!
if i == nil then
break
end
print("You wrote: ",i,".")
if i == "0" then
break
elseif i == "1" then
print("As you wish.")
else
print("No idea what you meant. Please try again.")
end
print() --print a newline
end

3
ncat/scripts/date.lua Normal file
View File

@@ -0,0 +1,3 @@
--Emulates the daytime service (RFC 867).
print(os.date())

11
ncat/scripts/discard.lua Normal file
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@@ -0,0 +1,11 @@
--This script reads data from the standard input and discards them.
while true do
data = io.stdin:read(512)
if data == nil then
break
end
end

14
ncat/scripts/echo.lua Normal file
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@@ -0,0 +1,14 @@
--Emulates the RFC 862 echo service, behaving like Unix's "cat" tool.
while true do
data = io.stdin:read(512)
if data == nil then
break
end
io.stdout:write(data)
io.stdout:flush()
end

4
ncat/scripts/hello-luaexec.lua Normal file
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@@ -0,0 +1,4 @@
--This is a --lua-exec "Hello world" example. In order to send to a client,
--all you need to do is output it to the standard output.
print("Hello, world!")

9
ncat/test/ncat-test.pl
View File

@@ -1041,7 +1041,7 @@ sub {
}; };
kill_children; kill_children;
# Test --exec and --sh-exec. # Test --exec, --sh-exec and --lua-exec.
server_client_test_all "--exec", server_client_test_all "--exec",
["--exec", "/usr/bin/perl -e \$|=1;while(<>){tr/a-z/A-Z/;print}"], [], sub { ["--exec", "/usr/bin/perl -e \$|=1;while(<>){tr/a-z/A-Z/;print}"], [], sub {
@@ -1077,6 +1077,13 @@ proxy_test "--exec through proxy",
$resp eq "abc\n" or die "Server received " . d($resp) . ", not " . d("abc\n"); $resp eq "abc\n" or die "Server received " . d($resp) . ", not " . d("abc\n");
}; };
server_client_test_all "--lua-exec",
["--lua-exec", "toupper.lua"], [], sub {
syswrite($c_in, "abc\n");
my $resp = timeout_read($c_out) or die "Read timeout";
$resp eq "ABC\n" or die "Client received " . d($resp) . ", not " . d("ABC\n");
};
# Do a syswrite and then a delay to force separate reads in the subprocess. # Do a syswrite and then a delay to force separate reads in the subprocess.
sub delaywrite { sub delaywrite {
my ($handle, $data) = @_; my ($handle, $data) = @_;

13
ncat/test/toupper.lua Normal file
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@@ -0,0 +1,13 @@
--Emulates the RFC 862 echo service, behaving like Unix's "cat" tool.
while true do
data = io.stdin:read(1024)
if data == nil then
break
end
io.write(data:upper())
end