mirror of
https://github.com/nmap/nmap.git
synced 2026-01-01 04:19:02 +00:00
Add script loading facilities.
This commit is contained in:
david
@@ -83,8 +83,8 @@ DATAFILES = certs/ca-bundle.crt
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endif
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ifneq ($(HAVE_LUA),)
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LUA_SRCS = ncat_lua_exec.c ncat_lua.c
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LUA_OBJS = ncat_lua_exec.o ncat_lua.o
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LUA_SRCS = ncat_lua_exec.c ncat_lua.c ncat_lua_filters.c
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LUA_OBJS = ncat_lua_exec.o ncat_lua.o ncat_lua_filters.o
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LUA_LIBS = @LIBLUA_LIBS@ -lm
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LUA_CFLAGS += -DHAVE_LUA=1 -I../liblua
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else
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@@ -200,6 +200,7 @@
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<ClCompile Include="ncat_listen.c" />
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<ClCompile Include="ncat_lua.c" />
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<ClCompile Include="ncat_lua_exec.c" />
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<ClCompile Include="ncat_lua_filters.c" />
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<ClCompile Include="ncat_main.c" />
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<ClCompile Include="ncat_proxy.c" />
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<ClCompile Include="ncat_ssl.c" />
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@@ -219,6 +220,7 @@
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<ClInclude Include="ncat_listen.h" />
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<ClInclude Include="ncat_lua.h" />
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<ClInclude Include="ncat_lua_exec.h" />
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<ClInclude Include="ncat_lua_filters.h" />
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<ClInclude Include="ncat_proxy.h" />
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<ClInclude Include="ncat_ssl.h" />
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<ClInclude Include="..\mswin32\packet_types.h" />
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@@ -123,7 +123,9 @@
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#include "ncat.h"
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#include "ncat_lua.h"
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#include "ncat_lua_filters.h"
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lua_State *filters_L = NULL;
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lua_State *luaexec_L = NULL;
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int error_handler_idx = -1;
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@@ -168,9 +170,8 @@ static int traceback (lua_State *L)
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void lua_setup(char *cmdexec, int script)
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{
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ncat_assert(cmdexec != NULL);
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ncat_assert(script == 0); //TODO
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lua_State **L = &luaexec_L;
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lua_State **L = script ? &filters_L : &luaexec_L;
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if (*L == NULL) {
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*L = luaL_newstate();
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@@ -182,8 +183,14 @@ void lua_setup(char *cmdexec, int script)
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lua_pushcfunction(*L, traceback);
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lua_insert(*L, error_handler_idx);
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}
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if (script)
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lua_filters_setup();
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}
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if (luaL_loadfile(*L, cmdexec) != 0)
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lua_report(*L, "Error loading the Lua script", 1);
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if (script)
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lua_run_filter(cmdexec);
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}
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@@ -137,6 +137,7 @@ extern "C" {
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#endif
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extern lua_State *luaexec_L;
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extern lua_State *filters_L;
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extern int error_handler_idx;
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231
ncat/ncat_lua_filters.c
Normal file
231
ncat/ncat_lua_filters.c
Normal file
@@ -0,0 +1,231 @@
|
||||
/***************************************************************************
|
||||
* ncat_lua_filters.c -- Ncat Lua filters shared code *
|
||||
***********************IMPORTANT NMAP LICENSE TERMS************************
|
||||
* *
|
||||
* The Nmap Security Scanner is (C) 1996-2013 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 ("GPL"), BUT ONLY WITH ALL OF THE CLARIFICATIONS *
|
||||
* AND EXCEPTIONS DESCRIBED HEREIN. 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@nmap.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 "derivative 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 with any software or content covered by this license *
|
||||
* ("Covered Software"): *
|
||||
* *
|
||||
* o Integrates source code from Covered Software. *
|
||||
* *
|
||||
* o Reads or includes copyrighted data files, such as Nmap's nmap-os-db *
|
||||
* or nmap-service-probes. *
|
||||
* *
|
||||
* o Is designed specifically to execute Covered Software and parse the *
|
||||
* results (as opposed to typical shell or execution-menu apps, which will *
|
||||
* execute anything you tell them to). *
|
||||
* *
|
||||
* o Includes Covered Software in a proprietary executable installer. The *
|
||||
* installers produced by InstallShield are an example of this. Including *
|
||||
* Nmap with other software in compressed or archival form does not *
|
||||
* trigger this provision, provided appropriate open source decompression *
|
||||
* or de-archiving software is widely available for no charge. For the *
|
||||
* purposes of this license, an installer is considered to include Covered *
|
||||
* Software even if it actually retrieves a copy of Covered Software from *
|
||||
* another source during runtime (such as by downloading it from the *
|
||||
* Internet). *
|
||||
* *
|
||||
* o Links (statically or dynamically) to a library which does any of the *
|
||||
* above. *
|
||||
* *
|
||||
* o Executes a helper program, module, or script to do any of the above. *
|
||||
* *
|
||||
* This list is not exclusive, but is meant to clarify our interpretation *
|
||||
* of derived works with some common examples. Other people may interpret *
|
||||
* the plain GPL differently, so we consider this a special exception to *
|
||||
* the GPL that we apply to Covered Software. Works which meet any of *
|
||||
* these conditions must conform to all of the terms of this license, *
|
||||
* particularly including the GPL Section 3 requirements of providing *
|
||||
* source code and allowing free redistribution of the work as a whole. *
|
||||
* *
|
||||
* As another 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. *
|
||||
* *
|
||||
* Any redistribution of Covered Software, including any derived works, *
|
||||
* must obey and carry forward all of the terms of this license, including *
|
||||
* obeying all GPL rules and restrictions. For example, source code of *
|
||||
* the whole work must be provided and free redistribution must be *
|
||||
* allowed. All GPL references to "this License", are to be treated as *
|
||||
* including the terms and conditions of this license text as well. *
|
||||
* *
|
||||
* Because this license imposes special exceptions to the GPL, Covered *
|
||||
* Work may not be combined (even as part of a larger work) with plain GPL *
|
||||
* software. The terms, conditions, and exceptions of this license must *
|
||||
* be included as well. This license is incompatible with some other open *
|
||||
* source licenses as well. In some cases we can relicense portions of *
|
||||
* Nmap or grant special permissions to use it in other open source *
|
||||
* software. Please contact fyodor@nmap.org with any such requests. *
|
||||
* Similarly, we don't incorporate incompatible open source software into *
|
||||
* Covered Software without special permission from the copyright holders. *
|
||||
* *
|
||||
* If you have any questions about the licensing restrictions on using *
|
||||
* Nmap in other works, are 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@nmap.com for further *
|
||||
* information. *
|
||||
* *
|
||||
* If you have received a written license agreement or contract for *
|
||||
* Covered Software stating terms other than these, you may choose to use *
|
||||
* and redistribute Covered Software under those terms instead of these. *
|
||||
* *
|
||||
* 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 *
|
||||
* *
|
||||
***************************************************************************/
|
||||
|
||||
/* $Id$ */
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||||
|
||||
#include "ncat.h"
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||||
#include "ncat_lua.h"
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||||
#include "ncat_lua_filters.h"
|
||||
|
||||
static int make_socket_function_idx;
|
||||
|
||||
static void lua_set_registry(const char *key);
|
||||
|
||||
static int lua_do_nothing(lua_State *L)
|
||||
{
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||||
return 0;
|
||||
}
|
||||
|
||||
static void lua_create_supersocket()
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||||
{
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lua_newtable(filters_L);
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||||
|
||||
lua_pushstring(filters_L, "recv");
|
||||
lua_pushcfunction(filters_L, lua_do_nothing);
|
||||
lua_settable(filters_L, -3);
|
||||
|
||||
lua_pushstring(filters_L, "send");
|
||||
lua_pushcfunction(filters_L, lua_do_nothing);
|
||||
lua_settable(filters_L, -3);
|
||||
|
||||
lua_set_registry("socket");
|
||||
}
|
||||
|
||||
void lua_filters_setup()
|
||||
{
|
||||
/* Initialize the registry. */
|
||||
lua_pushlightuserdata(filters_L, filters_L);
|
||||
lua_newtable(filters_L);
|
||||
lua_settable(filters_L, LUA_REGISTRYINDEX);
|
||||
|
||||
lua_newtable(filters_L);
|
||||
lua_set_registry("connections");
|
||||
|
||||
lua_newtable(filters_L);
|
||||
lua_set_registry("connection_roots");
|
||||
|
||||
lua_create_supersocket();
|
||||
|
||||
luaL_loadstring(filters_L, "return function(function_self, self, arg2) "
|
||||
"local super = arg2 or self.super "
|
||||
"local ret "
|
||||
"if super then "
|
||||
"ret = {} "
|
||||
"for _, m in pairs({'send','recv'}) do "
|
||||
/* Set the method to one that calls super and passes it
|
||||
all the arguments we got, returning everything we'd get.
|
||||
*/
|
||||
"ret[m] = function(self, ...) "
|
||||
"return table.unpack({self.super[m](self.super, ...)}) "
|
||||
"end "
|
||||
"end "
|
||||
"else "
|
||||
"ret = {} "
|
||||
"end "
|
||||
"for k, v in pairs(self) do "
|
||||
"ret[k] = v "
|
||||
"end "
|
||||
"if super then "
|
||||
"ret.super = function_self(function_self, super) "
|
||||
"end "
|
||||
"return ret "
|
||||
"end ");
|
||||
lua_pcall(filters_L, 0, 1, error_handler_idx);
|
||||
make_socket_function_idx = lua_gettop(filters_L);
|
||||
}
|
||||
|
||||
void lua_fetch_registry(const char *key)
|
||||
{
|
||||
lua_pushlightuserdata(filters_L, filters_L);
|
||||
lua_gettable(filters_L, LUA_REGISTRYINDEX);
|
||||
lua_pushstring(filters_L, key);
|
||||
lua_gettable(filters_L, -2);
|
||||
lua_insert(filters_L, -2);
|
||||
lua_pop(filters_L, 1);
|
||||
}
|
||||
|
||||
static void lua_set_registry(const char *key)
|
||||
{
|
||||
lua_pushlightuserdata(filters_L, filters_L);
|
||||
lua_gettable(filters_L, LUA_REGISTRYINDEX);
|
||||
lua_insert(filters_L, -2);
|
||||
lua_pushstring(filters_L, key);
|
||||
lua_insert(filters_L, -2);
|
||||
lua_settable(filters_L, -3);
|
||||
lua_pop(filters_L, 1);
|
||||
}
|
||||
|
||||
void lua_run_filter(char *cmdexec)
|
||||
{
|
||||
lua_pcall(filters_L, 0, 1, error_handler_idx);
|
||||
if (!lua_istable(filters_L, -1))
|
||||
bye("%s did not return a table.", cmdexec);
|
||||
/* Overwrite the socket variable with new_socket(socket_from_file,
|
||||
socket). */
|
||||
lua_pushvalue(filters_L, make_socket_function_idx);
|
||||
lua_insert(filters_L, -2);
|
||||
lua_pushvalue(filters_L, make_socket_function_idx);
|
||||
lua_insert(filters_L, -3);
|
||||
lua_fetch_registry("socket");
|
||||
if (lua_pcall(filters_L, 3, 1, error_handler_idx) != LUA_OK)
|
||||
lua_report(filters_L, cmdexec, 1);
|
||||
lua_set_registry("socket");
|
||||
}
|
||||
137
ncat/ncat_lua_filters.h
Normal file
137
ncat/ncat_lua_filters.h
Normal file
@@ -0,0 +1,137 @@
|
||||
/***************************************************************************
|
||||
* ncat_lua_filters.h -- Ncat Lua filters shared code headers *
|
||||
***********************IMPORTANT NMAP LICENSE TERMS************************
|
||||
* *
|
||||
* The Nmap Security Scanner is (C) 1996-2013 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 ("GPL"), BUT ONLY WITH ALL OF THE CLARIFICATIONS *
|
||||
* AND EXCEPTIONS DESCRIBED HEREIN. 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@nmap.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 "derivative 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 with any software or content covered by this license *
|
||||
* ("Covered Software"): *
|
||||
* *
|
||||
* o Integrates source code from Covered Software. *
|
||||
* *
|
||||
* o Reads or includes copyrighted data files, such as Nmap's nmap-os-db *
|
||||
* or nmap-service-probes. *
|
||||
* *
|
||||
* o Is designed specifically to execute Covered Software and parse the *
|
||||
* results (as opposed to typical shell or execution-menu apps, which will *
|
||||
* execute anything you tell them to). *
|
||||
* *
|
||||
* o Includes Covered Software in a proprietary executable installer. The *
|
||||
* installers produced by InstallShield are an example of this. Including *
|
||||
* Nmap with other software in compressed or archival form does not *
|
||||
* trigger this provision, provided appropriate open source decompression *
|
||||
* or de-archiving software is widely available for no charge. For the *
|
||||
* purposes of this license, an installer is considered to include Covered *
|
||||
* Software even if it actually retrieves a copy of Covered Software from *
|
||||
* another source during runtime (such as by downloading it from the *
|
||||
* Internet). *
|
||||
* *
|
||||
* o Links (statically or dynamically) to a library which does any of the *
|
||||
* above. *
|
||||
* *
|
||||
* o Executes a helper program, module, or script to do any of the above. *
|
||||
* *
|
||||
* This list is not exclusive, but is meant to clarify our interpretation *
|
||||
* of derived works with some common examples. Other people may interpret *
|
||||
* the plain GPL differently, so we consider this a special exception to *
|
||||
* the GPL that we apply to Covered Software. Works which meet any of *
|
||||
* these conditions must conform to all of the terms of this license, *
|
||||
* particularly including the GPL Section 3 requirements of providing *
|
||||
* source code and allowing free redistribution of the work as a whole. *
|
||||
* *
|
||||
* As another 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. *
|
||||
* *
|
||||
* Any redistribution of Covered Software, including any derived works, *
|
||||
* must obey and carry forward all of the terms of this license, including *
|
||||
* obeying all GPL rules and restrictions. For example, source code of *
|
||||
* the whole work must be provided and free redistribution must be *
|
||||
* allowed. All GPL references to "this License", are to be treated as *
|
||||
* including the terms and conditions of this license text as well. *
|
||||
* *
|
||||
* Because this license imposes special exceptions to the GPL, Covered *
|
||||
* Work may not be combined (even as part of a larger work) with plain GPL *
|
||||
* software. The terms, conditions, and exceptions of this license must *
|
||||
* be included as well. This license is incompatible with some other open *
|
||||
* source licenses as well. In some cases we can relicense portions of *
|
||||
* Nmap or grant special permissions to use it in other open source *
|
||||
* software. Please contact fyodor@nmap.org with any such requests. *
|
||||
* Similarly, we don't incorporate incompatible open source software into *
|
||||
* Covered Software without special permission from the copyright holders. *
|
||||
* *
|
||||
* If you have any questions about the licensing restrictions on using *
|
||||
* Nmap in other works, are 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@nmap.com for further *
|
||||
* information. *
|
||||
* *
|
||||
* If you have received a written license agreement or contract for *
|
||||
* Covered Software stating terms other than these, you may choose to use *
|
||||
* and redistribute Covered Software under those terms instead of these. *
|
||||
* *
|
||||
* 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_FILTERS_H
|
||||
#define _NCAT_LUA_FILTERS_H
|
||||
|
||||
struct ncat_lua_state {
|
||||
struct fdinfo fdn;
|
||||
};
|
||||
|
||||
void lua_fetch_registry(const char *key);
|
||||
void lua_run_filter(char *cmdexec);
|
||||
void lua_filters_setup();
|
||||
struct ncat_lua_state* get_connection(struct fdinfo *fdn, int *created);
|
||||
struct ncat_lua_state* lua_fetch_userdata(lua_State *L, int idx, int *ret);
|
||||
|
||||
#endif
|
||||
Reference in New Issue
Block a user