1 | /* $Id: DBGPlugInWinNt.cpp 45994 2013-05-12 19:16:16Z vboxsync $ */
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2 | /** @file
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3 | * DBGPlugInWindows - Debugger and Guest OS Digger Plugin For Windows NT.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2009-2013 Oracle Corporation
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | */
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17 |
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18 |
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19 | /*******************************************************************************
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20 | * Header Files *
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21 | *******************************************************************************/
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22 | #define LOG_GROUP LOG_GROUP_DBGF ///@todo add new log group.
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23 | #include "DBGPlugIns.h"
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24 | #include <VBox/vmm/dbgf.h>
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25 | #include <VBox/err.h>
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26 | #include <VBox/param.h>
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27 | #include <iprt/string.h>
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28 | #include <iprt/mem.h>
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29 | #include <iprt/stream.h>
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30 |
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31 | #include "../Runtime/include/internal/ldrMZ.h" /* ugly */
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32 | #include "../Runtime/include/internal/ldrPE.h" /* ugly */
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33 |
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34 |
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35 | /*******************************************************************************
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36 | * Structures and Typedefs *
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37 | *******************************************************************************/
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38 |
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39 | /** @name Internal WinNT structures
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40 | * @{ */
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41 | /**
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42 | * PsLoadedModuleList entry for 32-bit NT aka LDR_DATA_TABLE_ENTRY.
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43 | * Tested with XP.
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44 | */
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45 | typedef struct NTMTE32
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46 | {
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47 | struct
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48 | {
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49 | uint32_t Flink;
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50 | uint32_t Blink;
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51 | } InLoadOrderLinks,
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52 | InMemoryOrderModuleList,
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53 | InInitializationOrderModuleList;
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54 | uint32_t DllBase;
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55 | uint32_t EntryPoint;
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56 | uint32_t SizeOfImage;
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57 | struct
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58 | {
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59 | uint16_t Length;
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60 | uint16_t MaximumLength;
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61 | uint32_t Buffer;
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62 | } FullDllName,
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63 | BaseDllName;
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64 | uint32_t Flags;
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65 | uint16_t LoadCount;
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66 | uint16_t TlsIndex;
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67 | /* ... there is more ... */
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68 | } NTMTE32;
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69 | typedef NTMTE32 *PNTMTE32;
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70 |
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71 | /**
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72 | * PsLoadedModuleList entry for 32-bit NT aka LDR_DATA_TABLE_ENTRY.
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73 | * Tested with XP.
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74 | *
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75 | * @todo This is incomplete and just to get rid of warnings.
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76 | */
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77 | typedef struct NTMTE64
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78 | {
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79 | struct
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80 | {
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81 | uint64_t Flink;
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82 | uint64_t Blink;
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83 | } InLoadOrderLinks,
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84 | InMemoryOrderModuleList,
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85 | InInitializationOrderModuleList;
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86 | uint64_t DllBase;
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87 | uint64_t EntryPoint;
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88 | uint32_t SizeOfImage;
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89 | uint32_t Alignment;
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90 | struct
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91 | {
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92 | uint16_t Length;
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93 | uint16_t MaximumLength;
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94 | uint32_t Alignment;
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95 | uint64_t Buffer;
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96 | } FullDllName,
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97 | BaseDllName;
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98 | uint32_t Flags;
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99 | uint16_t LoadCount;
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100 | uint16_t TlsIndex;
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101 | /* ... there is more ... */
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102 | } NTMTE64;
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103 | typedef NTMTE64 *PNTMTE64;
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104 |
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105 | /** MTE union. */
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106 | typedef union NTMTE
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107 | {
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108 | NTMTE32 vX_32;
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109 | NTMTE64 vX_64;
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110 | } NTMTE;
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111 | typedef NTMTE *PNTMTE;
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112 |
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113 |
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114 | /**
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115 | * The essential bits of the KUSER_SHARED_DATA structure.
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116 | */
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117 | typedef struct NTKUSERSHAREDDATA
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118 | {
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119 | uint32_t TickCountLowDeprecated;
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120 | uint32_t TickCountMultiplier;
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121 | struct
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122 | {
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123 | uint32_t LowPart;
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124 | int32_t High1Time;
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125 | int32_t High2Time;
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126 |
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127 | } InterruptTime,
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128 | SystemTime,
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129 | TimeZoneBias;
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130 | uint16_t ImageNumberLow;
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131 | uint16_t ImageNumberHigh;
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132 | RTUTF16 NtSystemRoot[260];
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133 | uint32_t MaxStackTraceDepth;
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134 | uint32_t CryptoExponent;
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135 | uint32_t TimeZoneId;
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136 | uint32_t LargePageMinimum;
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137 | uint32_t Reserved2[7];
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138 | uint32_t NtProductType;
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139 | uint8_t ProductTypeIsValid;
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140 | uint8_t abPadding[3];
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141 | uint32_t NtMajorVersion;
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142 | uint32_t NtMinorVersion;
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143 | /* uint8_t ProcessorFeatures[64];
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144 | ...
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145 | */
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146 | } NTKUSERSHAREDDATA;
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147 | typedef NTKUSERSHAREDDATA *PNTKUSERSHAREDDATA;
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148 |
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149 | /** KI_USER_SHARED_DATA for i386 */
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150 | #define NTKUSERSHAREDDATA_WINNT32 UINT32_C(0xffdf0000)
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151 | /** KI_USER_SHARED_DATA for AMD64 */
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152 | #define NTKUSERSHAREDDATA_WINNT64 UINT64_C(0xfffff78000000000)
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153 |
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154 | /** NTKUSERSHAREDDATA::NtProductType */
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155 | typedef enum NTPRODUCTTYPE
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156 | {
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157 | kNtProductType_Invalid = 0,
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158 | kNtProductType_WinNt = 1,
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159 | kNtProductType_LanManNt,
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160 | kNtProductType_Server
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161 | } NTPRODUCTTYPE;
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162 |
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163 | /**
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164 | * PDB v2.0 in image debug info.
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165 | * The URL is constructed from the timestamp and the %02x age?
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166 | */
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167 | typedef struct CV_INFO_PDB20
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168 | {
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169 | uint32_t Signature; /**< CV_SIGNATURE_PDB70. */
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170 | int32_t Offset; /**< Always 0. Used to be the offset to the real debug info. */
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171 | uint32_t TimeDateStamp;
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172 | uint32_t Age;
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173 | uint8_t PdbFilename[4];
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174 | } CV_INFO_PDB20;
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175 | /** The CV_INFO_PDB20 signature. */
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176 | #define CV_SIGNATURE_PDB20 RT_MAKE_U32_FROM_U8('N','B','1','0')
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177 |
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178 | /**
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179 | * PDB v7.0 in image debug info.
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180 | * The URL is constructed from the signature and the %02x age.
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181 | */
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182 | #pragma pack(4)
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183 | typedef struct CV_INFO_PDB70
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184 | {
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185 | uint32_t CvSignature; /**< CV_SIGNATURE_PDB70. */
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186 | RTUUID Signature;
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187 | uint32_t Age;
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188 | uint8_t PdbFilename[4];
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189 | } CV_INFO_PDB70;
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190 | #pragma pack()
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191 | AssertCompileMemberOffset(CV_INFO_PDB70, Signature, 4);
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192 | AssertCompileMemberOffset(CV_INFO_PDB70, Age, 4 + 16);
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193 | /** The CV_INFO_PDB70 signature. */
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194 | #define CV_SIGNATURE_PDB70 RT_MAKE_U32_FROM_U8('R','S','D','S')
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195 |
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196 | /** @} */
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197 |
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198 |
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199 | typedef enum DBGDIGGERWINNTVER
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200 | {
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201 | DBGDIGGERWINNTVER_UNKNOWN,
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202 | DBGDIGGERWINNTVER_3_1,
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203 | DBGDIGGERWINNTVER_3_5,
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204 | DBGDIGGERWINNTVER_4_0,
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205 | DBGDIGGERWINNTVER_5_0,
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206 | DBGDIGGERWINNTVER_5_1,
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207 | DBGDIGGERWINNTVER_6_0
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208 | } DBGDIGGERWINNTVER;
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209 |
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210 | /**
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211 | * WinNT guest OS digger instance data.
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212 | */
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213 | typedef struct DBGDIGGERWINNT
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214 | {
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215 | /** Whether the information is valid or not.
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216 | * (For fending off illegal interface method calls.) */
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217 | bool fValid;
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218 | /** 32-bit (true) or 64-bit (false) */
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219 | bool f32Bit;
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220 |
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221 | /** The NT version. */
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222 | DBGDIGGERWINNTVER enmVer;
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223 | /** NTKUSERSHAREDDATA::NtProductType */
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224 | NTPRODUCTTYPE NtProductType;
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225 | /** NTKUSERSHAREDDATA::NtMajorVersion */
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226 | uint32_t NtMajorVersion;
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227 | /** NTKUSERSHAREDDATA::NtMinorVersion */
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228 | uint32_t NtMinorVersion;
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229 |
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230 | /** The address of the ntoskrnl.exe image. */
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231 | DBGFADDRESS KernelAddr;
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232 | /** The address of the ntoskrnl.exe module table entry. */
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233 | DBGFADDRESS KernelMteAddr;
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234 | /** The address of PsLoadedModuleList. */
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235 | DBGFADDRESS PsLoadedModuleListAddr;
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236 | } DBGDIGGERWINNT;
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237 | /** Pointer to the linux guest OS digger instance data. */
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238 | typedef DBGDIGGERWINNT *PDBGDIGGERWINNT;
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239 |
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240 |
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241 | /*******************************************************************************
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242 | * Defined Constants And Macros *
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243 | *******************************************************************************/
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244 | /** Validates a 32-bit Windows NT kernel address */
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245 | #define WINNT32_VALID_ADDRESS(Addr) ((Addr) > UINT32_C(0x80000000) && (Addr) < UINT32_C(0xfffff000))
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246 | /** Validates a 64-bit Windows NT kernel address */
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247 | #define WINNT64_VALID_ADDRESS(Addr) ((Addr) > UINT64_C(0xffffffff80000000) && (Addr) < UINT64_C(0xfffffffffffff000))
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248 | /** Validates a kernel address. */
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249 | #define WINNT_VALID_ADDRESS(pThis, Addr) ((pThis)->f32Bit ? WINNT32_VALID_ADDRESS(Addr) : WINNT64_VALID_ADDRESS(Addr))
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250 | /** Versioned and bitness wrapper. */
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251 | #define WINNT_UNION(pThis, pUnion, Member) ((pThis)->f32Bit ? (pUnion)->vX_32. Member : (pUnion)->vX_64. Member )
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252 |
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253 | /** The length (in chars) of the kernel file name (no path). */
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254 | #define WINNT_KERNEL_BASE_NAME_LEN 12
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255 |
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256 | /** WindowsNT on little endian ASCII systems. */
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257 | #define DIG_WINNT_MOD_TAG UINT64_C(0x54696e646f774e54)
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258 |
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259 |
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260 | /*******************************************************************************
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261 | * Internal Functions *
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262 | *******************************************************************************/
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263 | static DECLCALLBACK(int) dbgDiggerWinNtInit(PUVM pUVM, void *pvData);
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264 |
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265 |
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266 | /*******************************************************************************
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267 | * Global Variables *
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268 | *******************************************************************************/
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269 | /** Kernel names. */
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270 | static const RTUTF16 g_wszKernelNames[][WINNT_KERNEL_BASE_NAME_LEN + 1] =
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271 | {
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272 | { 'n', 't', 'o', 's', 'k', 'r', 'n', 'l', '.', 'e', 'x', 'e' }
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273 | };
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274 |
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275 |
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276 | /**
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277 | * Process a PE image found in guest memory.
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278 | *
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279 | * @param pThis The instance data.
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280 | * @param pUVM The user mode VM handle.
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281 | * @param pszName The image name.
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282 | * @param pImageAddr The image address.
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283 | * @param cbImage The size of the image.
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284 | * @param pbBuf Scratch buffer containing the first
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285 | * RT_MIN(cbBuf, cbImage) bytes of the image.
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286 | * @param cbBuf The scratch buffer size.
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287 | */
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288 | static void dbgDiggerWinNtProcessImage(PDBGDIGGERWINNT pThis, PUVM pUVM, const char *pszName,
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289 | PCDBGFADDRESS pImageAddr, uint32_t cbImage,
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290 | uint8_t *pbBuf, size_t cbBuf)
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291 | {
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292 | LogFlow(("DigWinNt: %RGp %#x %s\n", pImageAddr->FlatPtr, cbImage, pszName));
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293 |
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294 | /*
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295 | * Do some basic validation first.
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296 | * This is the usual exteremely verbose and messy code...
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297 | */
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298 | Assert(cbBuf >= sizeof(IMAGE_NT_HEADERS64));
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299 | if ( cbImage < sizeof(IMAGE_NT_HEADERS64)
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300 | || cbImage >= _1M * 256)
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301 | {
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302 | Log(("DigWinNt: %s: Bad image size: %#x\n", pszName, cbImage));
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303 | return;
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304 | }
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305 |
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306 | /* Dig out the NT/PE headers. */
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307 | IMAGE_DOS_HEADER const *pMzHdr = (IMAGE_DOS_HEADER const *)pbBuf;
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308 | typedef union NTHDRSU
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309 | {
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310 | IMAGE_NT_HEADERS32 vX_32;
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311 | IMAGE_NT_HEADERS64 vX_64;
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312 | } NTHDRS;
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313 | NTHDRS const *pHdrs;
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314 | uint32_t offHdrs;
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315 | if (pMzHdr->e_magic != IMAGE_DOS_SIGNATURE)
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316 | {
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317 | offHdrs = 0;
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318 | pHdrs = (NTHDRS const *)pbBuf;
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319 | }
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320 | else if ( pMzHdr->e_lfanew >= cbImage
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321 | || pMzHdr->e_lfanew < sizeof(*pMzHdr)
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322 | || pMzHdr->e_lfanew + sizeof(IMAGE_NT_HEADERS64) > cbImage)
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323 | {
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324 | Log(("DigWinNt: %s: PE header to far into image: %#x cbImage=%#x\n", pMzHdr->e_lfanew, cbImage));
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325 | return;
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326 | }
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327 | else if ( pMzHdr->e_lfanew < cbBuf
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328 | && pMzHdr->e_lfanew + sizeof(IMAGE_NT_HEADERS64) <= cbBuf)
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329 | {
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330 | offHdrs = pMzHdr->e_lfanew;
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331 | pHdrs = (NTHDRS const *)(pbBuf + offHdrs);
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332 | }
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333 | else
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334 | {
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335 | Log(("DigWinNt: %s: PE header to far into image (lazy bird): %#x\n", pMzHdr->e_lfanew));
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336 | return;
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337 | }
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338 | if (pHdrs->vX_32.Signature != IMAGE_NT_SIGNATURE)
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339 | {
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340 | Log(("DigWinNt: %s: Bad PE signature: %#x\n", pszName, pHdrs->vX_32.Signature));
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341 | return;
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342 | }
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343 |
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344 | /* The file header is the same on both archs */
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345 | if (pHdrs->vX_32.FileHeader.Machine != (pThis->f32Bit ? IMAGE_FILE_MACHINE_I386 : IMAGE_FILE_MACHINE_AMD64))
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346 | {
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347 | Log(("DigWinNt: %s: Invalid FH.Machine: %#x\n", pszName, pHdrs->vX_32.FileHeader.Machine));
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348 | return;
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349 | }
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350 | if (pHdrs->vX_32.FileHeader.SizeOfOptionalHeader != (pThis->f32Bit ? sizeof(IMAGE_OPTIONAL_HEADER32) : sizeof(IMAGE_OPTIONAL_HEADER64)))
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351 | {
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352 | Log(("DigWinNt: %s: Invalid FH.SizeOfOptionalHeader: %#x\n", pszName, pHdrs->vX_32.FileHeader.SizeOfOptionalHeader));
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353 | return;
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354 | }
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355 | const uint32_t TimeDateStamp = pHdrs->vX_32.FileHeader.TimeDateStamp;
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356 |
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357 | /* The optional header is not... */
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358 | if (WINNT_UNION(pThis, pHdrs, OptionalHeader.Magic) != (pThis->f32Bit ? IMAGE_NT_OPTIONAL_HDR32_MAGIC : IMAGE_NT_OPTIONAL_HDR64_MAGIC))
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359 | {
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360 | Log(("DigWinNt: %s: Invalid OH.Magic: %#x\n", pszName, WINNT_UNION(pThis, pHdrs, OptionalHeader.Magic)));
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361 | return;
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362 | }
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363 | uint32_t cbImageFromHdr = WINNT_UNION(pThis, pHdrs, OptionalHeader.SizeOfImage);
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364 | if (RT_ALIGN(cbImageFromHdr, _4K) != RT_ALIGN(cbImage, _4K))
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365 | {
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366 | Log(("DigWinNt: %s: Invalid OH.SizeOfImage: %#x, expected %#x\n", pszName, cbImageFromHdr, cbImage));
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367 | return;
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368 | }
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369 | if (WINNT_UNION(pThis, pHdrs, OptionalHeader.NumberOfRvaAndSizes) != IMAGE_NUMBEROF_DIRECTORY_ENTRIES)
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370 | {
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371 | Log(("DigWinNt: %s: Invalid OH.NumberOfRvaAndSizes: %#x\n", pszName, WINNT_UNION(pThis, pHdrs, OptionalHeader.NumberOfRvaAndSizes)));
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372 | return;
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373 | }
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374 |
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375 | uint32_t uRvaDebugDir = 0;
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376 | uint32_t cbDebugDir = 0;
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377 | IMAGE_DATA_DIRECTORY const *pDir = &WINNT_UNION(pThis, pHdrs, OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_DEBUG]);
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378 | if ( pDir->VirtualAddress > offHdrs
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379 | && pDir->VirtualAddress < cbImage
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380 | && pDir->Size >= sizeof(IMAGE_DEBUG_DIRECTORY)
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381 | && pDir->Size < cbImage
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382 | && pDir->VirtualAddress + pDir->Size <= cbImage
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383 | )
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384 | {
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385 | uRvaDebugDir = pDir->VirtualAddress;
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386 | cbDebugDir = pDir->Size;
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387 | }
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388 |
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389 | /*
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390 | * Create the module.
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391 | */
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392 | bool fPeImageMod = true;
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393 | RTDBGMOD hMod;
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394 | int rc = RTDbgModCreateFromPeImage(&hMod, pszName, NULL, cbImageFromHdr, TimeDateStamp, DBGFR3AsGetConfig(pUVM));
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395 | if (RT_FAILURE(rc))
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396 | {
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397 | rc = RTDbgModCreate(&hMod, pszName, cbImage, 0);
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398 | if (RT_FAILURE(rc))
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399 | return;
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400 | fPeImageMod = false;
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401 | }
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402 | rc = RTDbgModSetTag(hMod, DIG_WINNT_MOD_TAG); AssertRC(rc);
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403 |
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404 | if (fPeImageMod)
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405 | {
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406 | rc = RTDbgModSymbolAdd(hMod, "Headers", 0 /*iSeg*/, 0, cbImage, 0 /*fFlags*/, NULL);
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407 | AssertRC(rc);
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408 | /** @todo add sections? */
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409 | }
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410 |
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411 | /*
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412 | * Dig out debug info if possible. What we're after is the CODEVIEW part.
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413 | */
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414 | /** @todo do we really need this? */
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415 | if (uRvaDebugDir != 0)
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416 | {
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417 | DBGFADDRESS Addr = *pImageAddr;
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418 | DBGFR3AddrAdd(&Addr, uRvaDebugDir);
|
---|
419 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &Addr, pbBuf, RT_MIN(cbDebugDir, cbBuf));
|
---|
420 | if (RT_SUCCESS(rc))
|
---|
421 | {
|
---|
422 | IMAGE_DEBUG_DIRECTORY const *pa = (IMAGE_DEBUG_DIRECTORY const *)pbBuf;
|
---|
423 | size_t c = RT_MIN(RT_MIN(cbDebugDir, cbBuf) / sizeof(*pa), 10);
|
---|
424 | for (uint32_t i = 0; i < c; i++)
|
---|
425 | if ( pa[i].AddressOfRawData > offHdrs
|
---|
426 | && pa[i].AddressOfRawData < cbImage
|
---|
427 | && pa[i].SizeOfData < cbImage
|
---|
428 | && pa[i].AddressOfRawData + pa[i].SizeOfData <= cbImage
|
---|
429 | && pa[i].TimeDateStamp == TimeDateStamp /* too paranoid? */
|
---|
430 | && pa[i].Type == IMAGE_DEBUG_TYPE_CODEVIEW
|
---|
431 | )
|
---|
432 | {
|
---|
433 | }
|
---|
434 | }
|
---|
435 | }
|
---|
436 |
|
---|
437 | /*
|
---|
438 | * Link the module.
|
---|
439 | */
|
---|
440 | RTDBGAS hAs = DBGFR3AsResolveAndRetain(pUVM, DBGF_AS_KERNEL);
|
---|
441 | if (hAs != NIL_RTDBGAS)
|
---|
442 | rc = RTDbgAsModuleLink(hAs, hMod, pImageAddr->FlatPtr, RTDBGASLINK_FLAGS_REPLACE /*fFlags*/);
|
---|
443 | else
|
---|
444 | rc = VERR_INTERNAL_ERROR;
|
---|
445 | RTDbgModRelease(hMod);
|
---|
446 | RTDbgAsRelease(hAs);
|
---|
447 | }
|
---|
448 |
|
---|
449 |
|
---|
450 | /**
|
---|
451 | * @copydoc DBGFOSREG::pfnQueryInterface
|
---|
452 | */
|
---|
453 | static DECLCALLBACK(void *) dbgDiggerWinNtQueryInterface(PUVM pUVM, void *pvData, DBGFOSINTERFACE enmIf)
|
---|
454 | {
|
---|
455 | return NULL;
|
---|
456 | }
|
---|
457 |
|
---|
458 |
|
---|
459 | /**
|
---|
460 | * @copydoc DBGFOSREG::pfnQueryVersion
|
---|
461 | */
|
---|
462 | static DECLCALLBACK(int) dbgDiggerWinNtQueryVersion(PUVM pUVM, void *pvData, char *pszVersion, size_t cchVersion)
|
---|
463 | {
|
---|
464 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
465 | Assert(pThis->fValid);
|
---|
466 | const char *pszNtProductType;
|
---|
467 | switch (pThis->NtProductType)
|
---|
468 | {
|
---|
469 | case kNtProductType_WinNt: pszNtProductType = "-WinNT"; break;
|
---|
470 | case kNtProductType_LanManNt: pszNtProductType = "-LanManNT"; break;
|
---|
471 | case kNtProductType_Server: pszNtProductType = "-Server"; break;
|
---|
472 | default: pszNtProductType = ""; break;
|
---|
473 | }
|
---|
474 | RTStrPrintf(pszVersion, cchVersion, "%u.%u%s", pThis->NtMajorVersion, pThis->NtMinorVersion, pszNtProductType);
|
---|
475 | return VINF_SUCCESS;
|
---|
476 | }
|
---|
477 |
|
---|
478 |
|
---|
479 | /**
|
---|
480 | * @copydoc DBGFOSREG::pfnTerm
|
---|
481 | */
|
---|
482 | static DECLCALLBACK(void) dbgDiggerWinNtTerm(PUVM pUVM, void *pvData)
|
---|
483 | {
|
---|
484 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
485 | Assert(pThis->fValid);
|
---|
486 |
|
---|
487 | pThis->fValid = false;
|
---|
488 | }
|
---|
489 |
|
---|
490 |
|
---|
491 | /**
|
---|
492 | * @copydoc DBGFOSREG::pfnRefresh
|
---|
493 | */
|
---|
494 | static DECLCALLBACK(int) dbgDiggerWinNtRefresh(PUVM pUVM, void *pvData)
|
---|
495 | {
|
---|
496 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
497 | NOREF(pThis);
|
---|
498 | Assert(pThis->fValid);
|
---|
499 |
|
---|
500 | /*
|
---|
501 | * For now we'll flush and reload everything.
|
---|
502 | */
|
---|
503 | RTDBGAS hDbgAs = DBGFR3AsResolveAndRetain(pUVM, DBGF_AS_KERNEL);
|
---|
504 | if (hDbgAs != NIL_RTDBGAS)
|
---|
505 | {
|
---|
506 | uint32_t iMod = RTDbgAsModuleCount(hDbgAs);
|
---|
507 | while (iMod-- > 0)
|
---|
508 | {
|
---|
509 | RTDBGMOD hMod = RTDbgAsModuleByIndex(hDbgAs, iMod);
|
---|
510 | if (hMod != NIL_RTDBGMOD)
|
---|
511 | {
|
---|
512 | if (RTDbgModGetTag(hMod) == DIG_WINNT_MOD_TAG)
|
---|
513 | {
|
---|
514 | int rc = RTDbgAsModuleUnlink(hDbgAs, hMod);
|
---|
515 | AssertRC(rc);
|
---|
516 | }
|
---|
517 | RTDbgModRelease(hMod);
|
---|
518 | }
|
---|
519 | }
|
---|
520 | RTDbgAsRelease(hDbgAs);
|
---|
521 | }
|
---|
522 |
|
---|
523 | dbgDiggerWinNtTerm(pUVM, pvData);
|
---|
524 | return dbgDiggerWinNtInit(pUVM, pvData);
|
---|
525 | }
|
---|
526 |
|
---|
527 |
|
---|
528 | /**
|
---|
529 | * @copydoc DBGFOSREG::pfnInit
|
---|
530 | */
|
---|
531 | static DECLCALLBACK(int) dbgDiggerWinNtInit(PUVM pUVM, void *pvData)
|
---|
532 | {
|
---|
533 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
534 | Assert(!pThis->fValid);
|
---|
535 |
|
---|
536 | union
|
---|
537 | {
|
---|
538 | uint8_t au8[0x2000];
|
---|
539 | RTUTF16 wsz[0x2000/2];
|
---|
540 | NTKUSERSHAREDDATA UserSharedData;
|
---|
541 | } u;
|
---|
542 | DBGFADDRESS Addr;
|
---|
543 | int rc;
|
---|
544 |
|
---|
545 | /*
|
---|
546 | * Figure the NT version.
|
---|
547 | */
|
---|
548 | DBGFR3AddrFromFlat(pUVM, &Addr, pThis->f32Bit ? NTKUSERSHAREDDATA_WINNT32 : NTKUSERSHAREDDATA_WINNT64);
|
---|
549 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &Addr, &u, PAGE_SIZE);
|
---|
550 | if (RT_FAILURE(rc))
|
---|
551 | return rc;
|
---|
552 | pThis->NtProductType = u.UserSharedData.ProductTypeIsValid && u.UserSharedData.NtProductType <= kNtProductType_Server
|
---|
553 | ? (NTPRODUCTTYPE)u.UserSharedData.NtProductType
|
---|
554 | : kNtProductType_Invalid;
|
---|
555 | pThis->NtMajorVersion = u.UserSharedData.NtMajorVersion;
|
---|
556 | pThis->NtMinorVersion = u.UserSharedData.NtMinorVersion;
|
---|
557 |
|
---|
558 | /*
|
---|
559 | * Dig out the module chain.
|
---|
560 | */
|
---|
561 | DBGFADDRESS AddrPrev = pThis->PsLoadedModuleListAddr;
|
---|
562 | Addr = pThis->KernelMteAddr;
|
---|
563 | do
|
---|
564 | {
|
---|
565 | /* Read the validate the MTE. */
|
---|
566 | NTMTE Mte;
|
---|
567 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &Addr, &Mte, pThis->f32Bit ? sizeof(Mte.vX_32) : sizeof(Mte.vX_64));
|
---|
568 | if (RT_FAILURE(rc))
|
---|
569 | break;
|
---|
570 | if (WINNT_UNION(pThis, &Mte, InLoadOrderLinks.Blink) != AddrPrev.FlatPtr)
|
---|
571 | {
|
---|
572 | Log(("DigWinNt: Bad Mte At %RGv - backpointer\n", Addr.FlatPtr));
|
---|
573 | break;
|
---|
574 | }
|
---|
575 | if (!WINNT_VALID_ADDRESS(pThis, WINNT_UNION(pThis, &Mte, InLoadOrderLinks.Flink)) )
|
---|
576 | {
|
---|
577 | Log(("DigWinNt: Bad Mte at %RGv - forward pointer\n", Addr.FlatPtr));
|
---|
578 | break;
|
---|
579 | }
|
---|
580 | if (!WINNT_VALID_ADDRESS(pThis, WINNT_UNION(pThis, &Mte, BaseDllName.Buffer)))
|
---|
581 | {
|
---|
582 | Log(("DigWinNt: Bad Mte at %RGv - BaseDllName=%llx\n", Addr.FlatPtr, WINNT_UNION(pThis, &Mte, BaseDllName.Buffer)));
|
---|
583 | break;
|
---|
584 | }
|
---|
585 | if (!WINNT_VALID_ADDRESS(pThis, WINNT_UNION(pThis, &Mte, FullDllName.Buffer)))
|
---|
586 | {
|
---|
587 | Log(("DigWinNt: Bad Mte at %RGv - FullDllName=%llx\n", Addr.FlatPtr, WINNT_UNION(pThis, &Mte, FullDllName.Buffer)));
|
---|
588 | break;
|
---|
589 | }
|
---|
590 | if ( !WINNT_VALID_ADDRESS(pThis, WINNT_UNION(pThis, &Mte, DllBase))
|
---|
591 | || WINNT_UNION(pThis, &Mte, SizeOfImage) > _1M*256
|
---|
592 | || WINNT_UNION(pThis, &Mte, EntryPoint) - WINNT_UNION(pThis, &Mte, DllBase) > WINNT_UNION(pThis, &Mte, SizeOfImage) )
|
---|
593 | {
|
---|
594 | Log(("DigWinNt: Bad Mte at %RGv - EntryPoint=%llx SizeOfImage=%x DllBase=%llx\n",
|
---|
595 | Addr.FlatPtr, WINNT_UNION(pThis, &Mte, EntryPoint), WINNT_UNION(pThis, &Mte, SizeOfImage), WINNT_UNION(pThis, &Mte, DllBase)));
|
---|
596 | break;
|
---|
597 | }
|
---|
598 |
|
---|
599 | /* Read the full name. */
|
---|
600 | DBGFADDRESS AddrName;
|
---|
601 | DBGFR3AddrFromFlat(pUVM, &AddrName, WINNT_UNION(pThis, &Mte, FullDllName.Buffer));
|
---|
602 | uint16_t cbName = WINNT_UNION(pThis, &Mte, FullDllName.Length);
|
---|
603 | if (cbName < sizeof(u))
|
---|
604 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &AddrName, &u, cbName);
|
---|
605 | else
|
---|
606 | rc = VERR_OUT_OF_RANGE;
|
---|
607 | if (RT_FAILURE(rc))
|
---|
608 | {
|
---|
609 | DBGFR3AddrFromFlat(pUVM, &AddrName, WINNT_UNION(pThis, &Mte, BaseDllName.Buffer));
|
---|
610 | cbName = WINNT_UNION(pThis, &Mte, BaseDllName.Length);
|
---|
611 | if (cbName < sizeof(u))
|
---|
612 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &AddrName, &u, cbName);
|
---|
613 | else
|
---|
614 | rc = VERR_OUT_OF_RANGE;
|
---|
615 | }
|
---|
616 | if (RT_SUCCESS(rc))
|
---|
617 | {
|
---|
618 | u.wsz[cbName/2] = '\0';
|
---|
619 | char *pszName;
|
---|
620 | rc = RTUtf16ToUtf8(u.wsz, &pszName);
|
---|
621 | if (RT_SUCCESS(rc))
|
---|
622 | {
|
---|
623 | /* Read the start of the PE image and pass it along to a worker. */
|
---|
624 | DBGFADDRESS ImageAddr;
|
---|
625 | DBGFR3AddrFromFlat(pUVM, &ImageAddr, WINNT_UNION(pThis, &Mte, DllBase));
|
---|
626 | uint32_t cbImageBuf = RT_MIN(sizeof(u), WINNT_UNION(pThis, &Mte, SizeOfImage));
|
---|
627 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &ImageAddr, &u, cbImageBuf);
|
---|
628 | if (RT_SUCCESS(rc))
|
---|
629 | dbgDiggerWinNtProcessImage(pThis,
|
---|
630 | pUVM,
|
---|
631 | pszName,
|
---|
632 | &ImageAddr,
|
---|
633 | WINNT_UNION(pThis, &Mte, SizeOfImage),
|
---|
634 | &u.au8[0],
|
---|
635 | sizeof(u));
|
---|
636 | RTStrFree(pszName);
|
---|
637 | }
|
---|
638 | }
|
---|
639 |
|
---|
640 | /* next */
|
---|
641 | AddrPrev = Addr;
|
---|
642 | DBGFR3AddrFromFlat(pUVM, &Addr, WINNT_UNION(pThis, &Mte, InLoadOrderLinks.Flink));
|
---|
643 | } while ( Addr.FlatPtr != pThis->KernelMteAddr.FlatPtr
|
---|
644 | && Addr.FlatPtr != pThis->PsLoadedModuleListAddr.FlatPtr);
|
---|
645 |
|
---|
646 | pThis->fValid = true;
|
---|
647 | return VINF_SUCCESS;
|
---|
648 | }
|
---|
649 |
|
---|
650 |
|
---|
651 | /**
|
---|
652 | * @copydoc DBGFOSREG::pfnProbe
|
---|
653 | */
|
---|
654 | static DECLCALLBACK(bool) dbgDiggerWinNtProbe(PUVM pUVM, void *pvData)
|
---|
655 | {
|
---|
656 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
657 | DBGFADDRESS Addr;
|
---|
658 | union
|
---|
659 | {
|
---|
660 | uint8_t au8[8192];
|
---|
661 | uint16_t au16[8192/2];
|
---|
662 | uint32_t au32[8192/4];
|
---|
663 | IMAGE_DOS_HEADER MzHdr;
|
---|
664 | RTUTF16 wsz[8192/2];
|
---|
665 | } u;
|
---|
666 |
|
---|
667 | /*
|
---|
668 | * Look for the PAGELK section name that seems to be a part of all kernels.
|
---|
669 | * Then try find the module table entry for it. Since it's the first entry
|
---|
670 | * in the PsLoadedModuleList we can easily validate the list head and report
|
---|
671 | * success.
|
---|
672 | */
|
---|
673 | CPUMMODE enmMode = DBGFR3CpuGetMode(pUVM, 0 /*idCpu*/);
|
---|
674 | if (enmMode == CPUMMODE_LONG)
|
---|
675 | {
|
---|
676 | /** @todo when 32-bit is working, add support for 64-bit windows nt. */
|
---|
677 | }
|
---|
678 | else
|
---|
679 | {
|
---|
680 | DBGFADDRESS KernelAddr;
|
---|
681 | for (DBGFR3AddrFromFlat(pUVM, &KernelAddr, UINT32_C(0x80001000));
|
---|
682 | KernelAddr.FlatPtr < UINT32_C(0xffff0000);
|
---|
683 | KernelAddr.FlatPtr += PAGE_SIZE)
|
---|
684 | {
|
---|
685 | int rc = DBGFR3MemScan(pUVM, 0 /*idCpu*/, &KernelAddr, UINT32_C(0xffff0000) - KernelAddr.FlatPtr,
|
---|
686 | 1, "PAGELK\0", sizeof("PAGELK\0"), &KernelAddr);
|
---|
687 | if (RT_FAILURE(rc))
|
---|
688 | break;
|
---|
689 | DBGFR3AddrSub(&KernelAddr, KernelAddr.FlatPtr & PAGE_OFFSET_MASK);
|
---|
690 |
|
---|
691 | /* MZ + PE header. */
|
---|
692 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &KernelAddr, &u, sizeof(u));
|
---|
693 | if ( RT_SUCCESS(rc)
|
---|
694 | && u.MzHdr.e_magic == IMAGE_DOS_SIGNATURE
|
---|
695 | && !(u.MzHdr.e_lfanew & 0x7)
|
---|
696 | && u.MzHdr.e_lfanew >= 0x080
|
---|
697 | && u.MzHdr.e_lfanew <= 0x200)
|
---|
698 | {
|
---|
699 | IMAGE_NT_HEADERS32 const *pHdrs = (IMAGE_NT_HEADERS32 const *)&u.au8[u.MzHdr.e_lfanew];
|
---|
700 | if ( pHdrs->Signature == IMAGE_NT_SIGNATURE
|
---|
701 | && pHdrs->FileHeader.Machine == IMAGE_FILE_MACHINE_I386
|
---|
702 | && pHdrs->FileHeader.SizeOfOptionalHeader == sizeof(pHdrs->OptionalHeader)
|
---|
703 | && pHdrs->FileHeader.NumberOfSections >= 10 /* the kernel has lots */
|
---|
704 | && (pHdrs->FileHeader.Characteristics & (IMAGE_FILE_EXECUTABLE_IMAGE | IMAGE_FILE_DLL)) == IMAGE_FILE_EXECUTABLE_IMAGE
|
---|
705 | && pHdrs->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC
|
---|
706 | && pHdrs->OptionalHeader.NumberOfRvaAndSizes == IMAGE_NUMBEROF_DIRECTORY_ENTRIES
|
---|
707 | /** @todo need more ntoskrnl signs? */
|
---|
708 | )
|
---|
709 | {
|
---|
710 | /* Find the MTE. */
|
---|
711 | NTMTE32 Mte;
|
---|
712 | RT_ZERO(Mte);
|
---|
713 | Mte.DllBase = KernelAddr.FlatPtr;
|
---|
714 | Mte.EntryPoint = KernelAddr.FlatPtr + pHdrs->OptionalHeader.AddressOfEntryPoint;
|
---|
715 | Mte.SizeOfImage = pHdrs->OptionalHeader.SizeOfImage;
|
---|
716 | DBGFADDRESS HitAddr;
|
---|
717 | rc = DBGFR3MemScan(pUVM, 0 /*idCpu*/, &KernelAddr, UINT32_MAX - KernelAddr.FlatPtr,
|
---|
718 | 4 /*align*/, &Mte.DllBase, 3 * sizeof(uint32_t), &HitAddr);
|
---|
719 | while (RT_SUCCESS(rc))
|
---|
720 | {
|
---|
721 | /* check the name. */
|
---|
722 | NTMTE32 Mte2;
|
---|
723 | DBGFADDRESS MteAddr = HitAddr;
|
---|
724 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, DBGFR3AddrSub(&MteAddr, RT_OFFSETOF(NTMTE32, DllBase)),
|
---|
725 | &Mte2, sizeof(Mte2));
|
---|
726 | if ( RT_SUCCESS(rc)
|
---|
727 | && Mte2.DllBase == Mte.DllBase
|
---|
728 | && Mte2.EntryPoint == Mte.EntryPoint
|
---|
729 | && Mte2.SizeOfImage == Mte.SizeOfImage
|
---|
730 | && WINNT32_VALID_ADDRESS(Mte2.InLoadOrderLinks.Flink)
|
---|
731 | && Mte2.InLoadOrderLinks.Blink > KernelAddr.FlatPtr /* list head inside ntoskrnl */
|
---|
732 | && Mte2.InLoadOrderLinks.Blink < KernelAddr.FlatPtr + Mte.SizeOfImage
|
---|
733 | && WINNT32_VALID_ADDRESS(Mte2.BaseDllName.Buffer)
|
---|
734 | && WINNT32_VALID_ADDRESS(Mte2.FullDllName.Buffer)
|
---|
735 | && Mte2.BaseDllName.Length <= Mte2.BaseDllName.MaximumLength
|
---|
736 | && Mte2.BaseDllName.Length == WINNT_KERNEL_BASE_NAME_LEN * 2
|
---|
737 | && Mte2.FullDllName.Length <= Mte2.FullDllName.MaximumLength
|
---|
738 | && Mte2.FullDllName.Length <= 256
|
---|
739 | )
|
---|
740 | {
|
---|
741 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, DBGFR3AddrFromFlat(pUVM, &Addr, Mte2.BaseDllName.Buffer),
|
---|
742 | u.wsz, Mte2.BaseDllName.Length);
|
---|
743 | u.wsz[Mte2.BaseDllName.Length / 2] = '\0';
|
---|
744 | if ( RT_SUCCESS(rc)
|
---|
745 | && ( !RTUtf16ICmp(u.wsz, g_wszKernelNames[0])
|
---|
746 | /* || !RTUtf16ICmp(u.wsz, g_wszKernelNames[1]) */
|
---|
747 | )
|
---|
748 | )
|
---|
749 | {
|
---|
750 | NTMTE32 Mte3;
|
---|
751 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, DBGFR3AddrFromFlat(pUVM, &Addr, Mte2.InLoadOrderLinks.Blink),
|
---|
752 | &Mte3, RT_SIZEOFMEMB(NTMTE32, InLoadOrderLinks));
|
---|
753 | if ( RT_SUCCESS(rc)
|
---|
754 | && Mte3.InLoadOrderLinks.Flink == MteAddr.FlatPtr
|
---|
755 | && WINNT32_VALID_ADDRESS(Mte3.InLoadOrderLinks.Blink) )
|
---|
756 | {
|
---|
757 | Log(("DigWinNt: MteAddr=%RGv KernelAddr=%RGv SizeOfImage=%x &PsLoadedModuleList=%RGv (32-bit)\n",
|
---|
758 | MteAddr.FlatPtr, KernelAddr.FlatPtr, Mte2.SizeOfImage, Addr.FlatPtr));
|
---|
759 | pThis->KernelAddr = KernelAddr;
|
---|
760 | pThis->KernelMteAddr = MteAddr;
|
---|
761 | pThis->PsLoadedModuleListAddr = Addr;
|
---|
762 | pThis->f32Bit = true;
|
---|
763 | return true;
|
---|
764 | }
|
---|
765 | }
|
---|
766 | }
|
---|
767 |
|
---|
768 | /* next */
|
---|
769 | DBGFR3AddrAdd(&HitAddr, 4);
|
---|
770 | if (HitAddr.FlatPtr <= UINT32_C(0xfffff000))
|
---|
771 | rc = DBGFR3MemScan(pUVM, 0 /*idCpu*/, &HitAddr, UINT32_MAX - HitAddr.FlatPtr,
|
---|
772 | 4 /*align*/, &Mte.DllBase, 3 * sizeof(uint32_t), &HitAddr);
|
---|
773 | else
|
---|
774 | rc = VERR_DBGF_MEM_NOT_FOUND;
|
---|
775 | }
|
---|
776 | }
|
---|
777 | }
|
---|
778 | }
|
---|
779 | }
|
---|
780 | return false;
|
---|
781 | }
|
---|
782 |
|
---|
783 |
|
---|
784 | /**
|
---|
785 | * @copydoc DBGFOSREG::pfnDestruct
|
---|
786 | */
|
---|
787 | static DECLCALLBACK(void) dbgDiggerWinNtDestruct(PUVM pUVM, void *pvData)
|
---|
788 | {
|
---|
789 |
|
---|
790 | }
|
---|
791 |
|
---|
792 |
|
---|
793 | /**
|
---|
794 | * @copydoc DBGFOSREG::pfnConstruct
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795 | */
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796 | static DECLCALLBACK(int) dbgDiggerWinNtConstruct(PUVM pUVM, void *pvData)
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797 | {
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798 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
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799 | pThis->fValid = false;
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800 | pThis->f32Bit = false;
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801 | pThis->enmVer = DBGDIGGERWINNTVER_UNKNOWN;
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802 | return VINF_SUCCESS;
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803 | }
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804 |
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805 |
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806 | const DBGFOSREG g_DBGDiggerWinNt =
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807 | {
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808 | /* .u32Magic = */ DBGFOSREG_MAGIC,
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809 | /* .fFlags = */ 0,
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810 | /* .cbData = */ sizeof(DBGDIGGERWINNT),
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811 | /* .szName = */ "WinNT",
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812 | /* .pfnConstruct = */ dbgDiggerWinNtConstruct,
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813 | /* .pfnDestruct = */ dbgDiggerWinNtDestruct,
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814 | /* .pfnProbe = */ dbgDiggerWinNtProbe,
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815 | /* .pfnInit = */ dbgDiggerWinNtInit,
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816 | /* .pfnRefresh = */ dbgDiggerWinNtRefresh,
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817 | /* .pfnTerm = */ dbgDiggerWinNtTerm,
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818 | /* .pfnQueryVersion = */ dbgDiggerWinNtQueryVersion,
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819 | /* .pfnQueryInterface = */ dbgDiggerWinNtQueryInterface,
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820 | /* .u32EndMagic = */ DBGFOSREG_MAGIC
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821 | };
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822 |
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