| 1 | /* $Id: kWorker.c 2831 2016-08-18 22:10:08Z bird $ */
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| 2 | /** @file
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| 3 | * kWorker - experimental process reuse worker for Windows.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (c) 2016 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
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| 8 | *
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| 9 | * This file is part of kBuild.
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| 10 | *
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| 11 | * kBuild is free software; you can redistribute it and/or modify
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| 12 | * it under the terms of the GNU General Public License as published by
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| 13 | * the Free Software Foundation; either version 3 of the License, or
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| 14 | * (at your option) any later version.
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| 15 | *
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| 16 | * kBuild is distributed in the hope that it will be useful,
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| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 19 | * GNU General Public License for more details.
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| 20 | *
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| 21 | * You should have received a copy of the GNU General Public License
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| 22 | * along with kBuild. If not, see <http://www.gnu.org/licenses/>
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| 23 | *
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| 24 | */
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| 25 |
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| 26 |
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| 27 | /*********************************************************************************************************************************
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| 28 | * Header Files *
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| 29 | *********************************************************************************************************************************/
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| 30 | #include <k/kHlp.h>
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| 31 | #include <k/kLdr.h>
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| 32 |
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| 33 | #include <stdio.h>
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| 34 | #include <intrin.h>
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| 35 | #include <setjmp.h>
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| 36 |
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| 37 | #include <nt/ntstat.h>
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| 38 | /* lib/nt_fullpath.c */
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| 39 | extern void nt_fullpath(const char *pszPath, char *pszFull, size_t cchFull);
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| 40 | #include <Windows.h>
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| 41 |
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| 42 |
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| 43 | /*********************************************************************************************************************************
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| 44 | * Structures and Typedefs *
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| 45 | *********************************************************************************************************************************/
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| 46 | typedef enum KWLOCATION
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| 47 | {
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| 48 | KWLOCATION_INVALID = 0,
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| 49 | KWLOCATION_EXE_DIR,
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| 50 | KWLOCATION_IMPORTER_DIR,
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| 51 | KWLOCATION_SYSTEM32
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| 52 | } KWLOCATION;
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| 53 |
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| 54 | typedef enum KWMODSTATE
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| 55 | {
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| 56 | KWMODSTATE_INVALID = 0,
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| 57 | KWMODSTATE_NEEDS_BITS,
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| 58 | KWMODSTATE_NEEDS_INIT,
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| 59 | KWMODSTATE_BEING_INITED,
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| 60 | KWMODSTATE_INIT_FAILED,
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| 61 | KWMODSTATE_READY,
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| 62 | } KWMODSTATE;
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| 63 |
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| 64 | typedef struct KWMODULE *PKWMODULE;
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| 65 | typedef struct KWMODULE
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| 66 | {
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| 67 | /** Pointer to the next image. */
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| 68 | PKWMODULE pNext;
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| 69 | /** The normalized path to the image. */
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| 70 | const char *pszPath;
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| 71 | /** The hash of the program path. */
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| 72 | KU32 uHashPath;
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| 73 | /** Number of references. */
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| 74 | KU32 cRefs;
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| 75 | /** The offset of the filename in pszPath. */
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| 76 | KU16 offFilename;
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| 77 | /** Set if executable. */
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| 78 | KBOOL fExe;
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| 79 | /** Set if native module entry. */
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| 80 | KBOOL fNative;
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| 81 | /** Loader module handle. */
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| 82 | PKLDRMOD pLdrMod;
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| 83 |
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| 84 | union
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| 85 | {
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| 86 | /** Data for a manually loaded image. */
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| 87 | struct
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| 88 | {
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| 89 | /** The of the loaded image bits. */
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| 90 | size_t cbImage;
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| 91 | /** Where we load the image. */
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| 92 | void *pvLoad;
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| 93 | /** Virgin copy of the image. */
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| 94 | void *pvCopy;
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| 95 | /** Ldr pvBits argument. This is NULL till we've successfully resolved
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| 96 | * the imports. */
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| 97 | void *pvBits;
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| 98 | /** The state. */
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| 99 | KWMODSTATE enmState;
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| 100 | /** Number of imported modules. */
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| 101 | size_t cImpMods;
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| 102 | /** Import array (variable size). */
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| 103 | PKWMODULE apImpMods[1];
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| 104 | } Manual;
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| 105 | } u;
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| 106 | } KWMODULE;
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| 107 |
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| 108 | typedef enum KWTOOLTYPE
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| 109 | {
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| 110 | KWTOOLTYPE_INVALID = 0,
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| 111 | KWTOOLTYPE_SANDBOXED,
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| 112 | KWTOOLTYPE_WATCOM,
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| 113 | KWTOOLTYPE_EXEC,
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| 114 | KWTOOLTYPE_END
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| 115 | } KWTOOLTYPE;
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| 116 |
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| 117 | typedef struct KWTOOL *PKWTOOL;
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| 118 | typedef struct KWTOOL
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| 119 | {
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| 120 | /** Pointer to the next in the hash collision chain. */
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| 121 | PKWTOOL pNext;
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| 122 | /** The normalized path to the program. */
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| 123 | const char *pszPath;
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| 124 | /** The hash of the program path. */
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| 125 | KU32 uHashPath;
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| 126 | /** The kind of tool. */
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| 127 | KWTOOLTYPE enmType;
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| 128 |
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| 129 | union
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| 130 | {
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| 131 | struct
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| 132 | {
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| 133 | /** The executable. */
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| 134 | PKWMODULE pExe;
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| 135 | } Sandboxed;
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| 136 | } u;
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| 137 | } KWTOOL;
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| 138 |
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| 139 |
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| 140 | typedef struct KWSANDBOX *PKWSANDBOX;
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| 141 | typedef struct KWSANDBOX
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| 142 | {
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| 143 | /** The tool currently running in the sandbox. */
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| 144 | PKWTOOL pTool;
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| 145 | /** Jump buffer. */
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| 146 | jmp_buf JmpBuf;
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| 147 | /** The thread ID of the main thread (owner of JmpBuf). */
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| 148 | DWORD idMainThread;
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| 149 | /** The exit code in case of longjmp. */
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| 150 | int rcExitCode;
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| 151 |
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| 152 |
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| 153 | } KWSANDBOX;
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| 154 |
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| 155 | /** Replacement function entry. */
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| 156 | typedef struct KWREPLACEMENTFUNCTION
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| 157 | {
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| 158 | /** The function name. */
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| 159 | const char *pszFunction;
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| 160 | /** The length of the function name. */
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| 161 | KSIZE cchFunction;
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| 162 | /** The module name (optional). */
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| 163 | const char *pszModule;
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| 164 | /** The replacement function. */
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| 165 | KUPTR pfnReplacement;
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| 166 | } KWREPLACEMENTFUNCTION;
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| 167 | typedef KWREPLACEMENTFUNCTION const *PCKWREPLACEMENTFUNCTION;
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| 168 |
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| 169 |
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| 170 | /*********************************************************************************************************************************
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| 171 | * Global Variables *
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| 172 | *********************************************************************************************************************************/
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| 173 | /** The currently active sandbox. */
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| 174 | static PKWSANDBOX g_pSandbox;
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| 175 |
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| 176 | /** Module hash table. */
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| 177 | static PKWMODULE g_apModules[127];
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| 178 |
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| 179 | /** Tool hash table. */
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| 180 | static PKWTOOL g_apTools[63];
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| 181 |
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| 182 | /** Create a larget BSS blob that with help of /IMAGEBASE:0x10000 should
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| 183 | * cover the default executable link address of 0x400000. */
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| 184 | #pragma section("DefLdBuf", write, execute, read)
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| 185 | __declspec(allocate("DefLdBuf"))
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| 186 | static KU8 g_abDefLdBuf[16*1024*1024];
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| 187 |
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| 188 | /* Further down. */
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| 189 | extern KWREPLACEMENTFUNCTION const g_aSandboxReplacements[];
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| 190 | extern KU32 const g_cSandboxReplacements;
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| 191 |
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| 192 |
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| 193 | /*********************************************************************************************************************************
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| 194 | * Internal Functions *
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| 195 | *********************************************************************************************************************************/
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| 196 | static FNKLDRMODGETIMPORT kwLdrModuleGetImportCallback;
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| 197 | static int kwLdrModuleResolveAndLookup(const char *pszName, PKWMODULE pExe, PKWMODULE pImporter, PKWMODULE *ppMod);
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| 198 |
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| 199 |
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| 200 | /**
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| 201 | * Normalizes the path so we get a consistent hash.
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| 202 | *
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| 203 | * @returns status code.
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| 204 | * @param pszPath The path.
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| 205 | * @param pszNormPath The output buffer.
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| 206 | * @param cbNormPath The size of the output buffer.
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| 207 | */
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| 208 | static int kwPathNormalize(const char *pszPath, char *pszNormPath, size_t cbNormPath)
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| 209 | {
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| 210 | char *pchSlash;
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| 211 | nt_fullpath(pszPath, pszNormPath, cbNormPath);
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| 212 |
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| 213 | pchSlash = kHlpStrChr(pszNormPath, '/');
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| 214 | while (pchSlash)
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| 215 | {
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| 216 | *pchSlash = '\\';
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| 217 | pchSlash = kHlpStrChr(pchSlash + 1, '/');
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| 218 | }
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| 219 |
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| 220 | return 0;
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| 221 | }
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| 222 |
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| 223 |
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| 224 | /**
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| 225 | * Hashes a string.
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| 226 | *
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| 227 | * @returns 32-bit string hash.
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| 228 | * @param pszString String to hash.
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| 229 | */
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| 230 | static KU32 kwStrHash(const char *pszString)
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| 231 | {
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| 232 | /* This algorithm was created for sdbm (a public-domain reimplementation of
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| 233 | ndbm) database library. it was found to do well in scrambling bits,
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| 234 | causing better distribution of the keys and fewer splits. it also happens
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| 235 | to be a good general hashing function with good distribution. the actual
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| 236 | function is hash(i) = hash(i - 1) * 65599 + str[i]; what is included below
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| 237 | is the faster version used in gawk. [there is even a faster, duff-device
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| 238 | version] the magic constant 65599 was picked out of thin air while
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| 239 | experimenting with different constants, and turns out to be a prime.
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| 240 | this is one of the algorithms used in berkeley db (see sleepycat) and
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| 241 | elsewhere. */
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| 242 | KU32 uHash = 0;
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| 243 | KU32 uChar;
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| 244 | while ((uChar = (unsigned char)*pszString++) != 0)
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| 245 | uHash = uChar + (uHash << 6) + (uHash << 16) - uHash;
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| 246 | return uHash;
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| 247 | }
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| 248 |
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| 249 |
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| 250 |
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| 251 |
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| 252 | /**
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| 253 | * Retains a new reference to the given module
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| 254 | * @returns pMod
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| 255 | * @param pMod The module to retain.
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| 256 | */
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| 257 | static PKWMODULE kwLdrModuleRetain(PKWMODULE pMod)
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| 258 | {
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| 259 | kHlpAssert(pMod->cRefs > 0);
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| 260 | kHlpAssert(pMod->cRefs < 64);
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| 261 | pMod->cRefs++;
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| 262 | return pMod;
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| 263 | }
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| 264 |
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| 265 |
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| 266 | /**
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| 267 | * Releases a module reference.
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| 268 | *
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| 269 | * @param pMod The module to release.
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| 270 | */
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| 271 | static void kwLdrModuleRelease(PKWMODULE pMod)
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| 272 | {
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| 273 | if (--pMod->cRefs == 0)
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| 274 | {
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| 275 | /* Unlink it. */
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| 276 | if (!pMod->fExe)
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| 277 | {
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| 278 | PKWMODULE pPrev = NULL;
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| 279 | unsigned idx = pMod->uHashPath % K_ELEMENTS(g_apModules);
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| 280 | if (g_apModules[idx] == pMod)
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| 281 | g_apModules[idx] = pMod->pNext;
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| 282 | else
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| 283 | {
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| 284 | PKWMODULE pPrev = g_apModules[idx];
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| 285 | kHlpAssert(pPrev != NULL);
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| 286 | while (pPrev->pNext != pMod)
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| 287 | {
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| 288 | pPrev = pPrev->pNext;
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| 289 | kHlpAssert(pPrev != NULL);
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| 290 | }
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| 291 | pPrev->pNext = pMod->pNext;
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| 292 | }
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| 293 | }
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| 294 |
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| 295 | /* Release import modules. */
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| 296 | if (!pMod->fNative)
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| 297 | {
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| 298 | KSIZE idx = pMod->u.Manual.cImpMods;
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| 299 | while (idx-- > 0)
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| 300 | {
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| 301 | kwLdrModuleRelease(pMod->u.Manual.apImpMods[idx]);
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| 302 | pMod->u.Manual.apImpMods[idx] = NULL;
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| 303 | }
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| 304 | }
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| 305 |
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| 306 | /* Free our resources. */
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| 307 | kLdrModClose(pMod->pLdrMod);
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| 308 | pMod->pLdrMod = NULL;
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| 309 |
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| 310 | if (!pMod->fNative)
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| 311 | {
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| 312 | kHlpPageFree(pMod->u.Manual.pvCopy, pMod->u.Manual.cbImage);
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| 313 | kHlpPageFree(pMod->u.Manual.pvLoad, pMod->u.Manual.cbImage);
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| 314 | }
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| 315 |
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| 316 | kHlpFree(pMod);
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| 317 | }
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| 318 | else
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| 319 | kHlpAssert(pMod->cRefs < 64);
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| 320 | }
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| 321 |
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| 322 |
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| 323 | /**
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| 324 | * Links the module into the module hash table.
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| 325 | *
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| 326 | * @returns pMod
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| 327 | * @param pMod The module to link.
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| 328 | */
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| 329 | static PKWMODULE kwLdrModuleLink(PKWMODULE pMod)
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| 330 | {
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| 331 | unsigned idx = pMod->uHashPath % K_ELEMENTS(g_apModules);
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| 332 | pMod->pNext = g_apModules[idx];
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| 333 | g_apModules[idx] = pMod;
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| 334 | return pMod;
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| 335 | }
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| 336 |
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| 337 |
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| 338 | /**
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| 339 | * Creates a module using the native loader.
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| 340 | *
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| 341 | * @returns Module w/ 1 reference on success, NULL on failure.
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| 342 | * @param pszPath The normalized path to the module.
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| 343 | * @param uHashPath The module path hash.
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| 344 | */
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| 345 | static PKWMODULE kwLdrModuleCreateNative(const char *pszPath, KU32 uHashPath)
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| 346 | {
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| 347 | /*
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| 348 | * Open the module and check the type.
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| 349 | */
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| 350 | PKLDRMOD pLdrMod;
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| 351 | int rc = kLdrModOpenNative(pszPath, &pLdrMod);
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| 352 | if (rc == 0)
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| 353 | {
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| 354 | /*
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| 355 | * Create the entry.
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| 356 | */
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| 357 | KSIZE cbPath = kHlpStrLen(pszPath) + 1;
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| 358 | PKWMODULE pMod = (PKWMODULE)kHlpAllocZ(sizeof(*pMod) + cbPath);
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| 359 | if (pMod)
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| 360 | {
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| 361 | pMod->pszPath = (char *)kHlpMemCopy(pMod + 1, pszPath, cbPath);
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| 362 | pMod->uHashPath = uHashPath;
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| 363 | pMod->cRefs = 1;
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| 364 | pMod->offFilename = (KU16)(kHlpGetFilename(pszPath) - pszPath);
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| 365 | pMod->fExe = K_FALSE;
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| 366 | pMod->fNative = K_TRUE;
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| 367 | pMod->pLdrMod = pLdrMod;
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| 368 | return kwLdrModuleLink(pMod);
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| 369 | }
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| 370 | //kLdrModClose(pLdrMod);
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| 371 | }
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| 372 | return NULL;
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| 373 | }
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| 374 |
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| 375 |
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| 376 | /**
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| 377 | * Creates a module using the our own loader.
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| 378 | *
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| 379 | * @returns Module w/ 1 reference on success, NULL on failure.
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| 380 | * @param pszPath The normalized path to the module.
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| 381 | * @param uHashPath The module path hash.
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| 382 | * @param fExe K_TRUE if this is an executable image, K_FALSE
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| 383 | * if not. Executable images does not get entered
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| 384 | * into the global module table.
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| 385 | * @param pExeMod The executable module of the process (for
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| 386 | * resolving imports). NULL if fExe is set.
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| 387 | */
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| 388 | static PKWMODULE kwLdrModuleCreateNonNative(const char *pszPath, KU32 uHashPath, KBOOL fExe, PKWMODULE pExeMod)
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| 389 | {
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| 390 | /*
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| 391 | * Open the module and check the type.
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| 392 | */
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| 393 | PKLDRMOD pLdrMod;
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| 394 | int rc = kLdrModOpen(pszPath, 0 /*fFlags*/, (KCPUARCH)K_ARCH, &pLdrMod);
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| 395 | if (rc == 0)
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| 396 | {
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| 397 | switch (pLdrMod->enmType)
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| 398 | {
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| 399 | case KLDRTYPE_EXECUTABLE_FIXED:
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| 400 | case KLDRTYPE_EXECUTABLE_RELOCATABLE:
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| 401 | case KLDRTYPE_EXECUTABLE_PIC:
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| 402 | if (!fExe)
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| 403 | rc = KERR_GENERAL_FAILURE;
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| 404 | break;
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| 405 |
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| 406 | case KLDRTYPE_SHARED_LIBRARY_RELOCATABLE:
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| 407 | case KLDRTYPE_SHARED_LIBRARY_PIC:
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| 408 | case KLDRTYPE_SHARED_LIBRARY_FIXED:
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| 409 | if (fExe)
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| 410 | rc = KERR_GENERAL_FAILURE;
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| 411 | break;
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| 412 |
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| 413 | default:
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| 414 | rc = KERR_GENERAL_FAILURE;
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| 415 | break;
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| 416 | }
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| 417 | if (rc == 0)
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| 418 | {
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| 419 | KI32 cImports = kLdrModNumberOfImports(pLdrMod, NULL /*pvBits*/);
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| 420 | if (cImports >= 0)
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| 421 | {
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| 422 | /*
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| 423 | * Create the entry.
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| 424 | */
|
|---|
| 425 | KSIZE cbPath = kHlpStrLen(pszPath) + 1;
|
|---|
| 426 | PKWMODULE pMod = (PKWMODULE)kHlpAllocZ(sizeof(*pMod) + cbPath + sizeof(pMod) * cImports);
|
|---|
| 427 | if (pMod)
|
|---|
| 428 | {
|
|---|
| 429 | KBOOL fFixed;
|
|---|
| 430 |
|
|---|
| 431 | pMod->cRefs = 1;
|
|---|
| 432 | pMod->offFilename = (KU16)(kHlpGetFilename(pszPath) - pszPath);
|
|---|
| 433 | pMod->fExe = fExe;
|
|---|
| 434 | pMod->fNative = K_FALSE;
|
|---|
| 435 | pMod->pLdrMod = pLdrMod;
|
|---|
| 436 | pMod->u.Manual.cImpMods = (KU32)cImports;
|
|---|
| 437 | pMod->pszPath = (char *)kHlpMemCopy(&pMod->u.Manual.apImpMods[cImports + 1], pszPath, cbPath);
|
|---|
| 438 |
|
|---|
| 439 | /*
|
|---|
| 440 | * Figure out where to load it and get memory there.
|
|---|
| 441 | */
|
|---|
| 442 | fFixed = pLdrMod->enmType == KLDRTYPE_EXECUTABLE_FIXED
|
|---|
| 443 | || pLdrMod->enmType == KLDRTYPE_SHARED_LIBRARY_FIXED;
|
|---|
| 444 | pMod->u.Manual.pvLoad = fFixed ? (void *)(KUPTR)pLdrMod->aSegments[0].LinkAddress : NULL;
|
|---|
| 445 | pMod->u.Manual.cbImage = kLdrModSize(pLdrMod);
|
|---|
| 446 | if ( !fFixed
|
|---|
| 447 | || (KUPTR)pMod->u.Manual.pvLoad - (KUPTR)g_abDefLdBuf >= sizeof(g_abDefLdBuf)
|
|---|
| 448 | || sizeof(g_abDefLdBuf) - (KUPTR)pMod->u.Manual.pvLoad - (KUPTR)g_abDefLdBuf < pMod->u.Manual.cbImage)
|
|---|
| 449 | rc = kHlpPageAlloc(&pMod->u.Manual.pvLoad, pMod->u.Manual.cbImage, KPROT_EXECUTE_READWRITE, fFixed);
|
|---|
| 450 | if (rc == 0)
|
|---|
| 451 | {
|
|---|
| 452 | rc = kHlpPageAlloc(&pMod->u.Manual.pvCopy, pMod->u.Manual.cbImage, KPROT_READWRITE, K_FALSE);
|
|---|
| 453 | if (rc == 0)
|
|---|
| 454 | {
|
|---|
| 455 |
|
|---|
| 456 | KI32 iImp;
|
|---|
| 457 |
|
|---|
| 458 | /*
|
|---|
| 459 | * Link the module (unless it's an executable image) and process the imports.
|
|---|
| 460 | */
|
|---|
| 461 | if (!fExe)
|
|---|
| 462 | kwLdrModuleLink(pMod);
|
|---|
| 463 |
|
|---|
| 464 | for (iImp = 0; iImp < cImports; iImp++)
|
|---|
| 465 | {
|
|---|
| 466 | char szName[1024];
|
|---|
| 467 | rc = kLdrModGetImport(pMod->pLdrMod, NULL /*pvBits*/, iImp, szName, sizeof(szName));
|
|---|
| 468 | if (rc == 0)
|
|---|
| 469 | {
|
|---|
| 470 | rc = kwLdrModuleResolveAndLookup(szName, pExeMod, pMod, &pMod->u.Manual.apImpMods[iImp]);
|
|---|
| 471 | if (rc == 0)
|
|---|
| 472 | continue;
|
|---|
| 473 | }
|
|---|
| 474 | break;
|
|---|
| 475 | }
|
|---|
| 476 |
|
|---|
| 477 | if (rc == 0)
|
|---|
| 478 | {
|
|---|
| 479 | rc = kLdrModGetBits(pLdrMod, pMod->u.Manual.pvCopy, (KUPTR)pMod->u.Manual.pvLoad,
|
|---|
| 480 | kwLdrModuleGetImportCallback, pMod);
|
|---|
| 481 | if (rc == 0)
|
|---|
| 482 | {
|
|---|
| 483 | pMod->u.Manual.pvBits = pMod->u.Manual.pvCopy;
|
|---|
| 484 | pMod->u.Manual.enmState = KWMODSTATE_NEEDS_BITS;
|
|---|
| 485 | return pMod;
|
|---|
| 486 | }
|
|---|
| 487 | }
|
|---|
| 488 |
|
|---|
| 489 | kwLdrModuleRelease(pMod);
|
|---|
| 490 | return NULL;
|
|---|
| 491 |
|
|---|
| 492 | //kHlpPageFree(pMod->u.Manual.pvCopy, pMod->u.Manual.cbImage);
|
|---|
| 493 | }
|
|---|
| 494 | kHlpPageFree(pMod->u.Manual.pvLoad, pMod->u.Manual.cbImage);
|
|---|
| 495 | }
|
|---|
| 496 | }
|
|---|
| 497 | }
|
|---|
| 498 | }
|
|---|
| 499 | kLdrModClose(pLdrMod);
|
|---|
| 500 | }
|
|---|
| 501 | return NULL;
|
|---|
| 502 | }
|
|---|
| 503 |
|
|---|
| 504 |
|
|---|
| 505 | /** Implements FNKLDRMODGETIMPORT, used by kwLdrModuleCreate. */
|
|---|
| 506 | static int kwLdrModuleGetImportCallback(PKLDRMOD pMod, KU32 iImport, KU32 iSymbol, const char *pchSymbol, KSIZE cchSymbol,
|
|---|
| 507 | const char *pszVersion, PKLDRADDR puValue, KU32 *pfKind, void *pvUser)
|
|---|
| 508 | {
|
|---|
| 509 | PKWMODULE pCurMod = (PKWMODULE)pvUser;
|
|---|
| 510 | PKWMODULE pImpMod = pCurMod->u.Manual.apImpMods[iImport];
|
|---|
| 511 | int rc;
|
|---|
| 512 | K_NOREF(pMod);
|
|---|
| 513 |
|
|---|
| 514 | if (pImpMod->fNative)
|
|---|
| 515 | rc = kLdrModQuerySymbol(pImpMod->pLdrMod, NULL /*pvBits*/, KLDRMOD_BASEADDRESS_MAP,
|
|---|
| 516 | iSymbol, pchSymbol, cchSymbol, pszVersion,
|
|---|
| 517 | NULL /*pfnGetForwarder*/, NULL /*pvUSer*/,
|
|---|
| 518 | puValue, pfKind);
|
|---|
| 519 | else
|
|---|
| 520 | rc = kLdrModQuerySymbol(pImpMod->pLdrMod, pImpMod->u.Manual.pvBits, (KUPTR)pImpMod->u.Manual.pvLoad,
|
|---|
| 521 | iSymbol, pchSymbol, cchSymbol, pszVersion,
|
|---|
| 522 | NULL /*pfnGetForwarder*/, NULL /*pvUSer*/,
|
|---|
| 523 | puValue, pfKind);
|
|---|
| 524 | if (rc == 0)
|
|---|
| 525 | {
|
|---|
| 526 | KU32 i = g_cSandboxReplacements;
|
|---|
| 527 | while (i-- > 0)
|
|---|
| 528 | if ( g_aSandboxReplacements[i].cchFunction == cchSymbol
|
|---|
| 529 | && kHlpMemComp(g_aSandboxReplacements[i].pszFunction, pchSymbol, cchSymbol) == 0)
|
|---|
| 530 | {
|
|---|
| 531 | if ( !g_aSandboxReplacements[i].pszModule
|
|---|
| 532 | || kHlpStrICompAscii(g_aSandboxReplacements[i].pszModule, &pImpMod->pszPath[pImpMod->offFilename]) == 0)
|
|---|
| 533 | {
|
|---|
| 534 | printf("replacing %s!%s\n", &pImpMod->pszPath[pImpMod->offFilename], g_aSandboxReplacements[i].pszFunction);
|
|---|
| 535 | *puValue = g_aSandboxReplacements[i].pfnReplacement;
|
|---|
| 536 | }
|
|---|
| 537 | }
|
|---|
| 538 | }
|
|---|
| 539 |
|
|---|
| 540 | printf("iImport=%u (%s) %*.*s rc=%d\n", iImport, &pImpMod->pszPath[pImpMod->offFilename], cchSymbol, cchSymbol, pchSymbol, rc);
|
|---|
| 541 | return rc;
|
|---|
| 542 |
|
|---|
| 543 | }
|
|---|
| 544 |
|
|---|
| 545 |
|
|---|
| 546 | /**
|
|---|
| 547 | * Gets the main entrypoint for a module.
|
|---|
| 548 | *
|
|---|
| 549 | * @returns 0 on success, KERR on failure
|
|---|
| 550 | * @param pMod The module.
|
|---|
| 551 | * @param puAddrMain Where to return the address.
|
|---|
| 552 | */
|
|---|
| 553 | static int kwLdrModuleQueryMainEntrypoint(PKWMODULE pMod, KUPTR *puAddrMain)
|
|---|
| 554 | {
|
|---|
| 555 | KLDRADDR uLdrAddrMain;
|
|---|
| 556 | int rc = kLdrModQueryMainEntrypoint(pMod->pLdrMod, pMod->u.Manual.pvBits, (KUPTR)pMod->u.Manual.pvLoad, &uLdrAddrMain);
|
|---|
| 557 | if (rc == 0)
|
|---|
| 558 | {
|
|---|
| 559 | *puAddrMain = (KUPTR)uLdrAddrMain;
|
|---|
| 560 | return 0;
|
|---|
| 561 | }
|
|---|
| 562 | return rc;
|
|---|
| 563 | }
|
|---|
| 564 |
|
|---|
| 565 |
|
|---|
| 566 | static KBOOL kwLdrModuleCanLoadNatively(const char *pszFilename, KWLOCATION enmLocation)
|
|---|
| 567 | {
|
|---|
| 568 | if (enmLocation == KWLOCATION_SYSTEM32)
|
|---|
| 569 | return K_TRUE;
|
|---|
| 570 | return kHlpStrICompAscii(pszFilename, "msvcrt.dll") == 0
|
|---|
| 571 | || kHlpStrNICompAscii(pszFilename, "msvc", 4) == 0;
|
|---|
| 572 | }
|
|---|
| 573 |
|
|---|
| 574 |
|
|---|
| 575 | /**
|
|---|
| 576 | * Worker for kwLdrModuleResolveAndLookup that checks out one possibility.
|
|---|
| 577 | *
|
|---|
| 578 | * If the file exists, we consult the module hash table before trying to load it
|
|---|
| 579 | * off the disk.
|
|---|
| 580 | *
|
|---|
| 581 | * @returns Pointer to module on success, NULL if not found, ~(KUPTR)0 on
|
|---|
| 582 | * failure.
|
|---|
| 583 | * @param pszPath The name of the import module.
|
|---|
| 584 | * @param enmLocation The location we're searching. This is used in
|
|---|
| 585 | * the heuristics for determining if we can use the
|
|---|
| 586 | * native loader or need to sandbox the DLL.
|
|---|
| 587 | * @param pExe The executable (optional).
|
|---|
| 588 | */
|
|---|
| 589 | static PKWMODULE kwLdrModuleTryLoadDll(const char *pszPath, KWLOCATION enmLocation, PKWMODULE pExeMod)
|
|---|
| 590 | {
|
|---|
| 591 | /*
|
|---|
| 592 | * Does the file exists and is it a regular file?
|
|---|
| 593 | */
|
|---|
| 594 | BirdStat_T Stat;
|
|---|
| 595 | int rc = birdStatFollowLink(pszPath, &Stat);
|
|---|
| 596 | if (rc == 0)
|
|---|
| 597 | {
|
|---|
| 598 | if (S_ISREG(Stat.st_mode))
|
|---|
| 599 | {
|
|---|
| 600 | /*
|
|---|
| 601 | * Yes! Normalize it and look it up in the hash table.
|
|---|
| 602 | */
|
|---|
| 603 | char szNormPath[1024];
|
|---|
| 604 | rc = kwPathNormalize(pszPath, szNormPath, sizeof(szNormPath));
|
|---|
| 605 | if (rc == 0)
|
|---|
| 606 | {
|
|---|
| 607 | KU32 const uHashPath = kwStrHash(szNormPath);
|
|---|
| 608 | unsigned idxHash = uHashPath % K_ELEMENTS(g_apModules);
|
|---|
| 609 | PKWMODULE pMod = g_apModules[idxHash];
|
|---|
| 610 | if (pMod)
|
|---|
| 611 | {
|
|---|
| 612 | do
|
|---|
| 613 | {
|
|---|
| 614 | if ( pMod->uHashPath == uHashPath
|
|---|
| 615 | && kHlpStrComp(pMod->pszPath, szNormPath) == 0)
|
|---|
| 616 | return kwLdrModuleRetain(pMod);
|
|---|
| 617 | pMod = pMod->pNext;
|
|---|
| 618 | } while (pMod);
|
|---|
| 619 | }
|
|---|
| 620 |
|
|---|
| 621 | /*
|
|---|
| 622 | * Not in the hash table, so we have to load it from scratch.
|
|---|
| 623 | */
|
|---|
| 624 | if (kwLdrModuleCanLoadNatively(kHlpGetFilename(szNormPath), enmLocation))
|
|---|
| 625 | pMod = kwLdrModuleCreateNative(szNormPath, uHashPath);
|
|---|
| 626 | else
|
|---|
| 627 | pMod = kwLdrModuleCreateNonNative(szNormPath, uHashPath, K_FALSE /*fExe*/, pExeMod);
|
|---|
| 628 | if (pMod)
|
|---|
| 629 | return pMod;
|
|---|
| 630 | return (PKWMODULE)~(KUPTR)0;
|
|---|
| 631 | }
|
|---|
| 632 | }
|
|---|
| 633 | }
|
|---|
| 634 | return NULL;
|
|---|
| 635 | }
|
|---|
| 636 |
|
|---|
| 637 |
|
|---|
| 638 | /**
|
|---|
| 639 | * Gets a reference to the module by the given name.
|
|---|
| 640 | *
|
|---|
| 641 | * We must do the search path thing, as our hash table may multiple DLLs with
|
|---|
| 642 | * the same base name due to different tools version and similar. We'll use a
|
|---|
| 643 | * modified search sequence, though. No point in searching the current
|
|---|
| 644 | * directory for instance.
|
|---|
| 645 | *
|
|---|
| 646 | * @returns 0 on success, KERR on failure.
|
|---|
| 647 | * @param pszName The name of the import module.
|
|---|
| 648 | * @param pExe The executable (optional).
|
|---|
| 649 | * @param pImporter The module doing the importing (optional).
|
|---|
| 650 | * @param ppMod Where to return the module pointer w/ reference.
|
|---|
| 651 | */
|
|---|
| 652 | static int kwLdrModuleResolveAndLookup(const char *pszName, PKWMODULE pExe, PKWMODULE pImporter, PKWMODULE *ppMod)
|
|---|
| 653 | {
|
|---|
| 654 | KSIZE const cchName = kHlpStrLen(pszName);
|
|---|
| 655 | char szPath[1024];
|
|---|
| 656 | PKWMODULE pMod = NULL;
|
|---|
| 657 |
|
|---|
| 658 |
|
|---|
| 659 | /* The import path. */
|
|---|
| 660 | if (pMod == NULL && pImporter != NULL)
|
|---|
| 661 | {
|
|---|
| 662 | if (pImporter->offFilename + cchName >= sizeof(szPath))
|
|---|
| 663 | return KERR_BUFFER_OVERFLOW;
|
|---|
| 664 | kHlpMemCopy(kHlpMemPCopy(szPath, pImporter->pszPath, pImporter->offFilename), pszName, cchName + 1);
|
|---|
| 665 | pMod = kwLdrModuleTryLoadDll(szPath, KWLOCATION_IMPORTER_DIR, pExe);
|
|---|
| 666 | }
|
|---|
| 667 |
|
|---|
| 668 | /* Application directory first. */
|
|---|
| 669 | if (pMod == NULL && pExe != NULL && pExe != pImporter)
|
|---|
| 670 | {
|
|---|
| 671 | if (pExe->offFilename + cchName >= sizeof(szPath))
|
|---|
| 672 | return KERR_BUFFER_OVERFLOW;
|
|---|
| 673 | kHlpMemCopy(kHlpMemPCopy(szPath, pExe->pszPath, pExe->offFilename), pszName, cchName + 1);
|
|---|
| 674 | pMod = kwLdrModuleTryLoadDll(szPath, KWLOCATION_EXE_DIR, pExe);
|
|---|
| 675 | }
|
|---|
| 676 |
|
|---|
| 677 | /* The windows directory. */
|
|---|
| 678 | if (pMod == NULL)
|
|---|
| 679 | {
|
|---|
| 680 | UINT cchDir = GetSystemDirectoryA(szPath, sizeof(szPath));
|
|---|
| 681 | if ( cchDir <= 2
|
|---|
| 682 | || cchDir + 1 + cchName >= sizeof(szPath))
|
|---|
| 683 | return KERR_BUFFER_OVERFLOW;
|
|---|
| 684 | szPath[cchDir++] = '\\';
|
|---|
| 685 | kHlpMemCopy(&szPath[cchDir], pszName, cchName + 1);
|
|---|
| 686 | pMod = kwLdrModuleTryLoadDll(szPath, KWLOCATION_SYSTEM32, pExe);
|
|---|
| 687 | }
|
|---|
| 688 |
|
|---|
| 689 | /* Return. */
|
|---|
| 690 | if (pMod != NULL && pMod != (PKWMODULE)~(KUPTR)0)
|
|---|
| 691 | {
|
|---|
| 692 | *ppMod = pMod;
|
|---|
| 693 | return 0;
|
|---|
| 694 | }
|
|---|
| 695 | *ppMod = NULL;
|
|---|
| 696 | return KERR_GENERAL_FAILURE;
|
|---|
| 697 | }
|
|---|
| 698 |
|
|---|
| 699 |
|
|---|
| 700 |
|
|---|
| 701 | /**
|
|---|
| 702 | * Creates a tool entry and inserts it.
|
|---|
| 703 | *
|
|---|
| 704 | * @returns Pointer to the tool entry. NULL on failure.
|
|---|
| 705 | * @param pszTool The normalized path to the tool.
|
|---|
| 706 | * @param uHashPath The hash of the tool path.
|
|---|
| 707 | * @param idxHashTab The hash table index of the tool.
|
|---|
| 708 | */
|
|---|
| 709 | static PKWTOOL kwToolEntryCreate(const char *pszTool, KU32 uHashPath, unsigned idxHashTab)
|
|---|
| 710 | {
|
|---|
| 711 | KSIZE cbTool = kHlpStrLen(pszTool) + 1;
|
|---|
| 712 | PKWTOOL pTool = (PKWTOOL)kHlpAllocZ(sizeof(*pTool) + cbTool);
|
|---|
| 713 | if (pTool)
|
|---|
| 714 | {
|
|---|
| 715 | pTool->pszPath = (char *)kHlpMemCopy(pTool + 1, pszTool, cbTool);
|
|---|
| 716 | pTool->uHashPath = uHashPath;
|
|---|
| 717 | pTool->enmType = KWTOOLTYPE_SANDBOXED;
|
|---|
| 718 |
|
|---|
| 719 | pTool->u.Sandboxed.pExe = kwLdrModuleCreateNonNative(pszTool, uHashPath, K_TRUE /*fExe*/, NULL);
|
|---|
| 720 | if (!pTool->u.Sandboxed.pExe)
|
|---|
| 721 | pTool->enmType = KWTOOLTYPE_EXEC;
|
|---|
| 722 |
|
|---|
| 723 | /* Link the tool. */
|
|---|
| 724 | pTool->pNext = g_apTools[idxHashTab];
|
|---|
| 725 | g_apTools[idxHashTab] = pTool;
|
|---|
| 726 | return pTool;
|
|---|
| 727 | }
|
|---|
| 728 | return NULL;
|
|---|
| 729 | }
|
|---|
| 730 |
|
|---|
| 731 |
|
|---|
| 732 | /**
|
|---|
| 733 | * Looks up the given tool, creating a new tool table entry if necessary.
|
|---|
| 734 | *
|
|---|
| 735 | * @returns Pointer to the tool entry. NULL on failure.
|
|---|
| 736 | * @param pszExe The executable for the tool (not normalized).
|
|---|
| 737 | */
|
|---|
| 738 | static PKWTOOL kwToolLookup(const char *pszExe)
|
|---|
| 739 | {
|
|---|
| 740 | /*
|
|---|
| 741 | * Normalize the path and look up the tool in the g_apTools hash table.
|
|---|
| 742 | */
|
|---|
| 743 | char szNormPath[4096];
|
|---|
| 744 | int rc = kwPathNormalize(pszExe, szNormPath, sizeof(szNormPath));
|
|---|
| 745 | if (rc == 0)
|
|---|
| 746 | {
|
|---|
| 747 | KU32 uHashPath = kwStrHash(szNormPath);
|
|---|
| 748 | unsigned idxHash = uHashPath % K_ELEMENTS(g_apTools);
|
|---|
| 749 | PKWTOOL pTool = g_apTools[idxHash];
|
|---|
| 750 | if (pTool)
|
|---|
| 751 | {
|
|---|
| 752 | do
|
|---|
| 753 | {
|
|---|
| 754 | if ( pTool->uHashPath == uHashPath
|
|---|
| 755 | && kHlpStrComp(pTool->pszPath, szNormPath) == 0)
|
|---|
| 756 | return pTool;
|
|---|
| 757 | pTool = pTool->pNext;
|
|---|
| 758 | } while (pTool);
|
|---|
| 759 | }
|
|---|
| 760 |
|
|---|
| 761 | /*
|
|---|
| 762 | * Not found, create new entry.
|
|---|
| 763 | */
|
|---|
| 764 | return kwToolEntryCreate(szNormPath, uHashPath, idxHash);
|
|---|
| 765 | }
|
|---|
| 766 | return NULL;
|
|---|
| 767 | }
|
|---|
| 768 |
|
|---|
| 769 |
|
|---|
| 770 |
|
|---|
| 771 | /*
|
|---|
| 772 | *
|
|---|
| 773 | * Kernel32 API replacements.
|
|---|
| 774 | * Kernel32 API replacements.
|
|---|
| 775 | * Kernel32 API replacements.
|
|---|
| 776 | *
|
|---|
| 777 | */
|
|---|
| 778 |
|
|---|
| 779 | /** ExitProcess replacement. */
|
|---|
| 780 | static void WINAPI kwSandbox_Kernel32_ExitProcess(UINT uExitCode)
|
|---|
| 781 | {
|
|---|
| 782 | if (g_pSandbox->idMainThread == GetCurrentThreadId())
|
|---|
| 783 | {
|
|---|
| 784 | g_pSandbox->rcExitCode = (int)uExitCode;
|
|---|
| 785 | longjmp(g_pSandbox->JmpBuf, 1);
|
|---|
| 786 | }
|
|---|
| 787 | __debugbreak();
|
|---|
| 788 | }
|
|---|
| 789 |
|
|---|
| 790 | /** ExitProcess replacement. */
|
|---|
| 791 | static BOOL WINAPI kwSandbox_Kernel32_TerminateProcess(HANDLE hProcess, UINT uExitCode)
|
|---|
| 792 | {
|
|---|
| 793 | if (hProcess == GetCurrentProcess())
|
|---|
| 794 | kwSandbox_Kernel32_ExitProcess(uExitCode);
|
|---|
| 795 | __debugbreak();
|
|---|
| 796 | return TerminateProcess(hProcess, uExitCode);
|
|---|
| 797 | }
|
|---|
| 798 |
|
|---|
| 799 |
|
|---|
| 800 |
|
|---|
| 801 | /*
|
|---|
| 802 | *
|
|---|
| 803 | * MS Visual C++ CRT replacements.
|
|---|
| 804 | * MS Visual C++ CRT replacements.
|
|---|
| 805 | * MS Visual C++ CRT replacements.
|
|---|
| 806 | *
|
|---|
| 807 | */
|
|---|
| 808 |
|
|---|
| 809 | /** Normal CRT exit(). */
|
|---|
| 810 | static void __cdecl kwSandbox_msvcrt_exit(int rcExitCode)
|
|---|
| 811 | {
|
|---|
| 812 | fprintf(stderr, "kwSandbox_msvcrt_exit\n");
|
|---|
| 813 | kwSandbox_Kernel32_ExitProcess(rcExitCode);
|
|---|
| 814 | }
|
|---|
| 815 |
|
|---|
| 816 |
|
|---|
| 817 | /** Quick CRT _exit(). */
|
|---|
| 818 | static void __cdecl kwSandbox_msvcrt__exit(int rcExitCode)
|
|---|
| 819 | {
|
|---|
| 820 | /* Quick. */
|
|---|
| 821 | fprintf(stderr, "kwSandbox_msvcrt__exit\n");
|
|---|
| 822 | kwSandbox_Kernel32_ExitProcess(rcExitCode);
|
|---|
| 823 | }
|
|---|
| 824 |
|
|---|
| 825 |
|
|---|
| 826 | /** Return to caller CRT _cexit(). */
|
|---|
| 827 | static void __cdecl kwSandbox_msvcrt__cexit(int rcExitCode)
|
|---|
| 828 | {
|
|---|
| 829 | fprintf(stderr, "kwSandbox_msvcrt__cexit\n");
|
|---|
| 830 | kwSandbox_Kernel32_ExitProcess(rcExitCode);
|
|---|
| 831 | }
|
|---|
| 832 |
|
|---|
| 833 |
|
|---|
| 834 | /** Quick return to caller CRT _c_exit(). */
|
|---|
| 835 | static void __cdecl kwSandbox_msvcrt__c_exit(int rcExitCode)
|
|---|
| 836 | {
|
|---|
| 837 | fprintf(stderr, "kwSandbox_msvcrt__c_exit\n");
|
|---|
| 838 | kwSandbox_Kernel32_ExitProcess(rcExitCode);
|
|---|
| 839 | }
|
|---|
| 840 |
|
|---|
| 841 |
|
|---|
| 842 | /** Runtime error and exit. */
|
|---|
| 843 | static void __cdecl kwSandbox_msvcrt__amsg_exit(int iMsgNo)
|
|---|
| 844 | {
|
|---|
| 845 | fprintf(stderr, "\nRuntime error #%u!\n", iMsgNo);
|
|---|
| 846 | kwSandbox_Kernel32_ExitProcess(255);
|
|---|
| 847 | }
|
|---|
| 848 |
|
|---|
| 849 |
|
|---|
| 850 | /** The CRT internal __getmainargs() API. */
|
|---|
| 851 | static int __cdecl kwSandbox_msvcrt___getmainargs(int *pargc, char ***pargv, char ***penvp,
|
|---|
| 852 | int dowildcard, /*_startupinfo*/ void *startinfo)
|
|---|
| 853 | {
|
|---|
| 854 | /** @todo startinfo points at a newmode (setmode) value. */
|
|---|
| 855 |
|
|---|
| 856 | *pargc = 2;
|
|---|
| 857 | *pargv = (char **)kHlpAllocZ(sizeof(char *) * 3);
|
|---|
| 858 | (*pargv)[0] = "nasm.exe";
|
|---|
| 859 | (*pargv)[1] = "-h";
|
|---|
| 860 | *penvp = (char **)kHlpAllocZ(sizeof(char *) * 1);
|
|---|
| 861 | return 0;
|
|---|
| 862 | }
|
|---|
| 863 |
|
|---|
| 864 |
|
|---|
| 865 | /**
|
|---|
| 866 | * Functions that needs replacing for sandboxed execution.
|
|---|
| 867 | */
|
|---|
| 868 | KWREPLACEMENTFUNCTION const g_aSandboxReplacements[] =
|
|---|
| 869 | {
|
|---|
| 870 | #define TUPLE(a_sz) a_sz, sizeof(a_sz) - 1
|
|---|
| 871 | { TUPLE("ExitProcess"), NULL, (KUPTR)kwSandbox_Kernel32_ExitProcess },
|
|---|
| 872 | { TUPLE("TerminateProcess"), NULL, (KUPTR)kwSandbox_Kernel32_TerminateProcess },
|
|---|
| 873 | { TUPLE("exit"), NULL, (KUPTR)kwSandbox_msvcrt_exit },
|
|---|
| 874 | { TUPLE("_exit"), NULL, (KUPTR)kwSandbox_msvcrt__exit },
|
|---|
| 875 | { TUPLE("_cexit"), NULL, (KUPTR)kwSandbox_msvcrt__cexit },
|
|---|
| 876 | { TUPLE("_c_exit"), NULL, (KUPTR)kwSandbox_msvcrt__c_exit },
|
|---|
| 877 | { TUPLE("_amsg_exit"), NULL, (KUPTR)kwSandbox_msvcrt__amsg_exit },
|
|---|
| 878 | { TUPLE("__getmainargs"), NULL, (KUPTR)kwSandbox_msvcrt___getmainargs},
|
|---|
| 879 | };
|
|---|
| 880 | /** Number of entries in g_aReplacements. */
|
|---|
| 881 | KU32 const g_cSandboxReplacements = K_ELEMENTS(g_aSandboxReplacements);
|
|---|
| 882 |
|
|---|
| 883 |
|
|---|
| 884 | /**
|
|---|
| 885 | * Used by kwSandboxExec to reset the state of the module tree.
|
|---|
| 886 | *
|
|---|
| 887 | * This is done recursively.
|
|---|
| 888 | *
|
|---|
| 889 | * @param pMod The root of the tree to consider.
|
|---|
| 890 | */
|
|---|
| 891 | static void kwSandboxResetModuleState(PKWMODULE pMod)
|
|---|
| 892 | {
|
|---|
| 893 | if ( !pMod->fNative
|
|---|
| 894 | && pMod->u.Manual.enmState != KWMODSTATE_NEEDS_BITS)
|
|---|
| 895 | {
|
|---|
| 896 | KSIZE iImp;
|
|---|
| 897 | pMod->u.Manual.enmState = KWMODSTATE_NEEDS_BITS;
|
|---|
| 898 | iImp = pMod->u.Manual.cImpMods;
|
|---|
| 899 | while (iImp-- > 0)
|
|---|
| 900 | kwSandboxResetModuleState(pMod->u.Manual.apImpMods[iImp]);
|
|---|
| 901 | }
|
|---|
| 902 | }
|
|---|
| 903 |
|
|---|
| 904 |
|
|---|
| 905 | /**
|
|---|
| 906 | * Does module initialization starting at @a pMod.
|
|---|
| 907 | *
|
|---|
| 908 | * This is initially used on the executable. Later it is used by the
|
|---|
| 909 | * LoadLibrary interceptor.
|
|---|
| 910 | *
|
|---|
| 911 | * @returns 0 on success, error on failure.
|
|---|
| 912 | * @param pMod The module to initialize.
|
|---|
| 913 | */
|
|---|
| 914 | static int kwSandboxInitModuleTree(PKWMODULE pMod)
|
|---|
| 915 | {
|
|---|
| 916 | int rc = 0;
|
|---|
| 917 | if (!pMod->fNative)
|
|---|
| 918 | {
|
|---|
| 919 | /* Need to copy bits? */
|
|---|
| 920 | if (pMod->u.Manual.enmState == KWMODSTATE_NEEDS_BITS)
|
|---|
| 921 | {
|
|---|
| 922 | kHlpMemCopy(pMod->u.Manual.pvLoad, pMod->u.Manual.pvCopy, pMod->u.Manual.cbImage);
|
|---|
| 923 | pMod->u.Manual.enmState = KWMODSTATE_NEEDS_INIT;
|
|---|
| 924 | }
|
|---|
| 925 |
|
|---|
| 926 | if (pMod->u.Manual.enmState == KWMODSTATE_NEEDS_INIT)
|
|---|
| 927 | {
|
|---|
| 928 | /* Must do imports first, but mark our module as being initialized to avoid
|
|---|
| 929 | endless recursion should there be a dependency loop. */
|
|---|
| 930 | KSIZE iImp;
|
|---|
| 931 | pMod->u.Manual.enmState = KWMODSTATE_BEING_INITED;
|
|---|
| 932 |
|
|---|
| 933 | for (iImp = 0; iImp < pMod->u.Manual.cImpMods; iImp++)
|
|---|
| 934 | {
|
|---|
| 935 | rc = kwSandboxInitModuleTree(pMod->u.Manual.apImpMods[iImp]);
|
|---|
| 936 | if (rc != 0)
|
|---|
| 937 | return rc;
|
|---|
| 938 | }
|
|---|
| 939 |
|
|---|
| 940 | rc = kLdrModCallInit(pMod->pLdrMod, pMod->u.Manual.pvLoad, (KUPTR)pMod->u.Manual.pvLoad);
|
|---|
| 941 | if (rc == 0)
|
|---|
| 942 | pMod->u.Manual.enmState = KWMODSTATE_READY;
|
|---|
| 943 | else
|
|---|
| 944 | pMod->u.Manual.enmState = KWMODSTATE_INIT_FAILED;
|
|---|
| 945 | }
|
|---|
| 946 | }
|
|---|
| 947 | return rc;
|
|---|
| 948 | }
|
|---|
| 949 |
|
|---|
| 950 |
|
|---|
| 951 | static void *kwSandboxGetProcessEnvironmentBlock(void)
|
|---|
| 952 | {
|
|---|
| 953 | #if K_ARCH == K_ARCH_X86_32
|
|---|
| 954 | return (void *)__readfsdword(0x030 /* offset of ProcessEnvironmentBlock in TEB */);
|
|---|
| 955 | #elif K_ARCH == K_ARCH_AMD64
|
|---|
| 956 | return (void *)__readgsqword(0x060 /* offset of ProcessEnvironmentBlock in TEB */);
|
|---|
| 957 | #else
|
|---|
| 958 | # error "Port me!"
|
|---|
| 959 | #endif
|
|---|
| 960 | }
|
|---|
| 961 |
|
|---|
| 962 |
|
|---|
| 963 | static int kwSandboxExec(PKWTOOL pTool, const char *pszCmdLine, int *prcExitCode)
|
|---|
| 964 | {
|
|---|
| 965 | int rc;
|
|---|
| 966 | KWSANDBOX Sandbox;
|
|---|
| 967 |
|
|---|
| 968 | /*
|
|---|
| 969 | * Initialize the sandbox environment.
|
|---|
| 970 | */
|
|---|
| 971 | Sandbox.pTool = pTool;
|
|---|
| 972 | Sandbox.rcExitCode = *prcExitCode = 256;
|
|---|
| 973 | Sandbox.idMainThread = GetCurrentThreadId();
|
|---|
| 974 | g_pSandbox = &Sandbox;
|
|---|
| 975 |
|
|---|
| 976 | /*
|
|---|
| 977 | * Do module initialization.
|
|---|
| 978 | */
|
|---|
| 979 | kwSandboxResetModuleState(pTool->u.Sandboxed.pExe);
|
|---|
| 980 | rc = kwSandboxInitModuleTree(pTool->u.Sandboxed.pExe);
|
|---|
| 981 | if (rc == 0)
|
|---|
| 982 | {
|
|---|
| 983 | /*
|
|---|
| 984 | * Call the main function.
|
|---|
| 985 | */
|
|---|
| 986 | KUPTR uAddrMain;
|
|---|
| 987 | rc = kwLdrModuleQueryMainEntrypoint(pTool->u.Sandboxed.pExe, &uAddrMain);
|
|---|
| 988 | if (rc == 0)
|
|---|
| 989 | {
|
|---|
| 990 | int rcExitCode;
|
|---|
| 991 | int (*pfnWin64Entrypoint)(void *pvPeb, void *, void *, void *);
|
|---|
| 992 | *(KUPTR *)&pfnWin64Entrypoint = uAddrMain;
|
|---|
| 993 |
|
|---|
| 994 | __try
|
|---|
| 995 | {
|
|---|
| 996 | if (setjmp(Sandbox.JmpBuf) == 0)
|
|---|
| 997 | {
|
|---|
| 998 | *(KU64*)(Sandbox.JmpBuf) = 0; /** @todo find other way to prevent longjmp from doing unwind! */
|
|---|
| 999 | rcExitCode = pfnWin64Entrypoint(kwSandboxGetProcessEnvironmentBlock, NULL, NULL, NULL);
|
|---|
| 1000 | }
|
|---|
| 1001 | else
|
|---|
| 1002 | rcExitCode = Sandbox.rcExitCode;
|
|---|
| 1003 | }
|
|---|
| 1004 | __except (EXCEPTION_EXECUTE_HANDLER)
|
|---|
| 1005 | {
|
|---|
| 1006 | rcExitCode = 512;
|
|---|
| 1007 | }
|
|---|
| 1008 | *prcExitCode = rcExitCode;
|
|---|
| 1009 | }
|
|---|
| 1010 | }
|
|---|
| 1011 | return rc;
|
|---|
| 1012 | }
|
|---|
| 1013 |
|
|---|
| 1014 |
|
|---|
| 1015 | static int kwExecCmdLine(const char *pszExe, const char *pszCmdLine)
|
|---|
| 1016 | {
|
|---|
| 1017 | int rc;
|
|---|
| 1018 | PKWTOOL pTool = kwToolLookup(pszExe);
|
|---|
| 1019 | if (pTool)
|
|---|
| 1020 | {
|
|---|
| 1021 | int rc;
|
|---|
| 1022 | int rcExitExit;
|
|---|
| 1023 | switch (pTool->enmType)
|
|---|
| 1024 | {
|
|---|
| 1025 | case KWTOOLTYPE_SANDBOXED:
|
|---|
| 1026 | rc = kwSandboxExec(pTool, pszCmdLine, &rcExitExit);
|
|---|
| 1027 | break;
|
|---|
| 1028 |
|
|---|
| 1029 | default:
|
|---|
| 1030 | kHlpAssertFailed();
|
|---|
| 1031 | case KWTOOLTYPE_WATCOM:
|
|---|
| 1032 | case KWTOOLTYPE_EXEC:
|
|---|
| 1033 | rc = 2;
|
|---|
| 1034 | break;
|
|---|
| 1035 | }
|
|---|
| 1036 | }
|
|---|
| 1037 | else
|
|---|
| 1038 | rc = 1;
|
|---|
| 1039 | return rc;
|
|---|
| 1040 | }
|
|---|
| 1041 |
|
|---|
| 1042 |
|
|---|
| 1043 | int main(int argc, char **argv)
|
|---|
| 1044 | {
|
|---|
| 1045 | int rc = kwExecCmdLine(argv[1], argv[2]);
|
|---|
| 1046 | rc = kwExecCmdLine(argv[1], argv[2]);
|
|---|
| 1047 | return rc;
|
|---|
| 1048 | }
|
|---|
| 1049 |
|
|---|