| 1 | /* $Id: pe2lx.h,v 1.7 2000-01-22 18:21:01 bird Exp $
|
|---|
| 2 | *
|
|---|
| 3 | * Pe2Lx class declarations. Ring 0 and Ring 3
|
|---|
| 4 | *
|
|---|
| 5 | * Copyright (c) 1998-1999 knut st. osmundsen (knut.stange.osmundsen@pmsc.no)
|
|---|
| 6 | * Copyright (c) 1998 Sander van Leeuwen (sandervl@xs4all.nl)
|
|---|
| 7 | * Copyright (c) 1998 Peter Fitzsimmons
|
|---|
| 8 | *
|
|---|
| 9 | * Project Odin Software License can be found in LICENSE.TXT
|
|---|
| 10 | *
|
|---|
| 11 | */
|
|---|
| 12 | #ifndef _PE2LX_H_
|
|---|
| 13 | #define _PE2LX_H_
|
|---|
| 14 |
|
|---|
| 15 |
|
|---|
| 16 | /*******************************************************************************
|
|---|
| 17 | * Defined Constants And Macros *
|
|---|
| 18 | *******************************************************************************/
|
|---|
| 19 | /*
|
|---|
| 20 | * BufferedRVAReader config
|
|---|
| 21 | */
|
|---|
| 22 | #define BUFFEREDRVAREADER_BUFFERSIZE PAGESIZE /* reader code assumes this size... */
|
|---|
| 23 |
|
|---|
| 24 |
|
|---|
| 25 |
|
|---|
| 26 | /*******************************************************************************
|
|---|
| 27 | * Structures and Typedefs *
|
|---|
| 28 | *******************************************************************************/
|
|---|
| 29 | /**
|
|---|
| 30 | * LXObject is use to store objects in the virtual LX file.
|
|---|
| 31 | */
|
|---|
| 32 | typedef struct LXObject
|
|---|
| 33 | {
|
|---|
| 34 | ULONG ulRVA; /* Object relative virtual address */
|
|---|
| 35 | ULONG cbPhysical; /* Physical size */
|
|---|
| 36 | ULONG cbVirtual; /* Virtual size */
|
|---|
| 37 | ULONG flFlags; /* LX flags! */
|
|---|
| 38 | struct
|
|---|
| 39 | {
|
|---|
| 40 | ULONG offTIBFix : 30; /* TIBfix offset (from the object start) */
|
|---|
| 41 | ULONG fTIBFixObject : 1;/* Set: The object contains the tibfix. Clear: not tib fix object. */
|
|---|
| 42 | ULONG fStackObject : 1; /* Set: The object is the stack object. Clear: not the stack object. */
|
|---|
| 43 | } Misc;
|
|---|
| 44 | ULONG offPEFile; /* section offset into real PE file. */
|
|---|
| 45 | ULONG offLXFile; /* object offset into virtual LX file. */
|
|---|
| 46 | } LXOBJECT, *PLXOBJECT;
|
|---|
| 47 | typedef const LXOBJECT *PCLXOBJECT;
|
|---|
| 48 |
|
|---|
| 49 |
|
|---|
| 50 |
|
|---|
| 51 | /**
|
|---|
| 52 | * Pe2Lx class. Reads a PE executable image and creates a virtual LX file which
|
|---|
| 53 | * can be read from and (RING3) dumped to file.
|
|---|
| 54 | *
|
|---|
| 55 | * @author knut st. osmundsen
|
|---|
| 56 | * @approval knut st. osmundsen
|
|---|
| 57 | */
|
|---|
| 58 | class Pe2Lx : public ModuleBase
|
|---|
| 59 | {
|
|---|
| 60 | public:
|
|---|
| 61 | /** @cat Constructor/Destructor */
|
|---|
| 62 | Pe2Lx(SFN hFile);
|
|---|
| 63 | ~Pe2Lx();
|
|---|
| 64 |
|
|---|
| 65 | /** @cat Public Main methods */
|
|---|
| 66 | ULONG init(PCSZ pszFilename);
|
|---|
| 67 | ULONG read(ULONG offLXFile, PVOID pvBuffer, ULONG cbToRead, ULONG flFlags, PMTE pMTE);
|
|---|
| 68 | ULONG applyFixups(PMTE pMTE, ULONG iObject, ULONG iPageTable, PVOID pvPage,
|
|---|
| 69 | ULONG ulPageAddress, PVOID pvPTDA); /*(ldrEnum32bitRelRecs)*/
|
|---|
| 70 |
|
|---|
| 71 | #ifndef RING0
|
|---|
| 72 | ULONG writeLxFile(PCSZ pszLXFilename);
|
|---|
| 73 | #endif
|
|---|
| 74 |
|
|---|
| 75 | /** @cat public Helper methods */
|
|---|
| 76 | ULONG querySizeOfLxFile();
|
|---|
| 77 | VOID dumpVirtualLxFile();
|
|---|
| 78 |
|
|---|
| 79 | private:
|
|---|
| 80 | /** @cat conversion methods */
|
|---|
| 81 | ULONG makeObjectTable();
|
|---|
| 82 | ULONG makeObjectPageTable();
|
|---|
| 83 | ULONG makeFixups();
|
|---|
| 84 | ULONG makeExports();
|
|---|
| 85 |
|
|---|
| 86 | /** @cat conversion helper(s) */
|
|---|
| 87 | ULONG loadNtHeaders();
|
|---|
| 88 | VOID releaseNtHeaders();
|
|---|
| 89 |
|
|---|
| 90 | /** @cat init() helper methods - may only be called at init time! */
|
|---|
| 91 | ULONG addObject(ULONG ulRVA, ULONG cbPhysical, ULONG cbVirtual, ULONG flFlags, ULONG offPEFile);
|
|---|
| 92 | ULONG addTIBFixObject();
|
|---|
| 93 | ULONG addStackObject(ULONG cbStack);
|
|---|
| 94 |
|
|---|
| 95 | /** @cat PE helper methods */
|
|---|
| 96 |
|
|---|
| 97 | /** @cat Fixups Helpers - calls allowed from makeFixups only! */
|
|---|
| 98 | ULONG initFixups();
|
|---|
| 99 | ULONG addPageFixupEntry(BOOL fLast = FALSE);
|
|---|
| 100 | ULONG add32OffsetFixup(WORD offSource, ULONG ulTarget);
|
|---|
| 101 | ULONG add32OrdImportFixup(WORD offSource, ULONG ulModuleOrdinal, ULONG ulFunctionOrdinal);
|
|---|
| 102 | ULONG add32NameImportFixup(WORD offSource, ULONG ulModuleOrdinal, PCSZ pszFnName);
|
|---|
| 103 | ULONG addModule(PCSZ pszModuleName, PULONG pulModuleOrdinal);
|
|---|
| 104 | ULONG addImportFunctionName(PCSZ pszFnName, PULONG poffFnName);
|
|---|
| 105 | VOID finalizeFixups();
|
|---|
| 106 | VOID finalizeImportNames();
|
|---|
| 107 |
|
|---|
| 108 | /** @cat Entry table / Resident nametable helpers */
|
|---|
| 109 | ULONG initEntry();
|
|---|
| 110 | ULONG addResName(ULONG ulOrdinal, PCSZ pszName, ULONG cchName);
|
|---|
| 111 | ULONG addEntry(ULONG ulOrdinal, ULONG ulRVA);
|
|---|
| 112 | ULONG addForwarderEntry(ULONG ulOrdinal, PCSZ pszDllName, PCSZ pszFnNameOrOrd);
|
|---|
| 113 | ULONG addLastEntry();
|
|---|
| 114 | VOID finalizeExports();
|
|---|
| 115 |
|
|---|
| 116 | /** @cat Misc helpers */
|
|---|
| 117 | ULONG getCountOfPages();
|
|---|
| 118 | ULONG queryObjectAndOffset(ULONG ulRVA, PULONG pulObject, PULONG poffObject);
|
|---|
| 119 |
|
|---|
| 120 | /** @cat static helpers */
|
|---|
| 121 | static PCSZ queryOdin32ModuleName(PCSZ pszWin32ModuleName);
|
|---|
| 122 |
|
|---|
| 123 | /** @cat static dump methods */
|
|---|
| 124 | static VOID dumpNtHeaders(PIMAGE_NT_HEADERS pNtHdrs);
|
|---|
| 125 | static VOID dumpSectionHeader(PIMAGE_SECTION_HEADER pSection);
|
|---|
| 126 |
|
|---|
| 127 | private:
|
|---|
| 128 | /** @cat private data members - allways present. */
|
|---|
| 129 | BOOL fAllInOneObject; /* The All-in-object fix will be or is applied. */
|
|---|
| 130 | PLXOBJECT paObjects; /* Pointer to object array. */
|
|---|
| 131 | USHORT cObjects; /* Count of elements in the object array. */
|
|---|
| 132 | USHORT cObjectsAllocated; /* Size of the object array. */
|
|---|
| 133 |
|
|---|
| 134 | /**
|
|---|
| 135 | * @cat LX structures
|
|---|
| 136 | */
|
|---|
| 137 | struct e32_exe LXHdr; /* Lxheader */
|
|---|
| 138 |
|
|---|
| 139 | struct o32_obj *paObjTab; /* Pointer to object table - if null check cObjects > 0 and generate it using makeObjectTable */
|
|---|
| 140 | struct o32_map *paObjPageTab; /* Pointer to object page table - if null check cObjects > 0 and generate it using makeObjectPageTable */
|
|---|
| 141 |
|
|---|
| 142 | PCHAR pachResNameTable; /* Pointer to resident name table. */
|
|---|
| 143 | ULONG offCurResName; /* Offset of the next entry in the resident name table. */
|
|---|
| 144 | ULONG cchRNTAllocated; /* Count of char allocated for the resident name table. */
|
|---|
| 145 |
|
|---|
| 146 | struct b32_bundle *pEntryBundles; /* Pointer to entry bundles. (exports) */
|
|---|
| 147 | ULONG offCurEntryBundle; /* Offset of the next bundle. */
|
|---|
| 148 | ULONG offLastEntryBundle; /* Offset of the last entry bundle. */
|
|---|
| 149 | ULONG ulLastOrdinal; /* Ordinal number of last entry which was added. */
|
|---|
| 150 | ULONG cbEBAllocated; /* Count of bytes allocate for entry bundles. */
|
|---|
| 151 | BOOL fForwarders; /* Set if forwarders are present. */
|
|---|
| 152 |
|
|---|
| 153 | PULONG paulFixupPageTable; /* Pointer to fixup pagetable. If null generate it using makeFixups. */
|
|---|
| 154 | ULONG cFixupPTEntries; /* Number of entries in the fixup page table. */
|
|---|
| 155 | ULONG cFPTEAllocated; /* Number of page table entries allocated. */
|
|---|
| 156 |
|
|---|
| 157 | PVOID pFixupRecords; /* Pointer to fixup records. If null generate it using makeFixups. */
|
|---|
| 158 | ULONG offCurFixupRec; /* Offset of next fixup. */
|
|---|
| 159 | ULONG cbFRAllocated; /* Count of bytes allocated for Fixup records. */
|
|---|
| 160 |
|
|---|
| 161 | PVOID pvCrossPageFixup; /* Pointer to cross page fixup. */
|
|---|
| 162 | ULONG cbCrossPageFixup; /* Fixup size in bytes. */
|
|---|
| 163 |
|
|---|
| 164 | PCHAR pachImpModuleNames; /* Pointer to list of module names. */
|
|---|
| 165 | ULONG offCurImpModuleName; /* Offset of next modulename. */
|
|---|
| 166 | ULONG cchIMNAllocated; /* Count of chars allocated for pachImpModuleNames. */
|
|---|
| 167 |
|
|---|
| 168 | PCHAR pachImpFunctionNames; /* Pointer to list of function names. */
|
|---|
| 169 | ULONG offCurImpFunctionName; /* Offset of next functionname. */
|
|---|
| 170 | ULONG cchIFNAllocated; /* Count of chars allocated for pachImpFunctionNames. */
|
|---|
| 171 |
|
|---|
| 172 | /**
|
|---|
| 173 | * @cat PE structues
|
|---|
| 174 | */
|
|---|
| 175 | ULONG offNtHeaders; /* Fileoffset of the PE\0\0 signature. */
|
|---|
| 176 | PIMAGE_NT_HEADERS pNtHdrs; /* Pointer to NT-Headers. If null load it using loadNtHeaders. */
|
|---|
| 177 | ULONG ulImageBase; /* Image base address. */
|
|---|
| 178 |
|
|---|
| 179 | /**
|
|---|
| 180 | * @cat static data.
|
|---|
| 181 | */
|
|---|
| 182 | static struct LieListEntry /* Dll Name lie table. */
|
|---|
| 183 | {
|
|---|
| 184 | PCSZ pszWin32Name; /* Win32 dll name. */
|
|---|
| 185 | PCSZ pszOdin32Name; /* Odin32 dll name. */
|
|---|
| 186 | } paLieList[];
|
|---|
| 187 |
|
|---|
| 188 | static struct PeCharacteristicsToLxFlags/* section characteristics to object flags */
|
|---|
| 189 | {
|
|---|
| 190 | unsigned int Characteristics; /* set of section characteristics */
|
|---|
| 191 | ULONG flFlags; /* equivalent object flags */
|
|---|
| 192 | } paSecChars2Flags[];
|
|---|
| 193 | };
|
|---|
| 194 |
|
|---|
| 195 |
|
|---|
| 196 | /**
|
|---|
| 197 | * BufferedRVARead - read at RVA with buffering.
|
|---|
| 198 | * @author knut st. osmundsen
|
|---|
| 199 | * @approval knut st. osmundsen
|
|---|
| 200 | */
|
|---|
| 201 | class BufferedRVARead
|
|---|
| 202 | {
|
|---|
| 203 | public:
|
|---|
| 204 | BufferedRVARead(SFN hFile, ULONG cObjects, PCLXOBJECT paObjects);
|
|---|
| 205 | #if 0
|
|---|
| 206 | ULONG readAtRVA(ULONG ulRVA, PVOID pvBuffer, ULONG cbBuffer)
|
|---|
| 207 | #else
|
|---|
| 208 | /**
|
|---|
| 209 | * Reads a chunk of data at the spcified RVA.
|
|---|
| 210 | * @returns NO_ERROR on success.
|
|---|
| 211 | * ERROR_INVALID_PARAMETER
|
|---|
| 212 | * <Whatever rc ReadAt returns>
|
|---|
| 213 | * @param ulRVA RVA to read from. Within the filesize.
|
|---|
| 214 | * @param pvBuffer Pointer to output buffer. pvBuffer > 64KB
|
|---|
| 215 | * @param cbBuffer Number of bytes to read. 0 < cbBuffer > 256MB
|
|---|
| 216 | * @status completely
|
|---|
| 217 | * @author knut st. osmundsen
|
|---|
| 218 | */
|
|---|
| 219 | inline ULONG readAtRVA(ULONG ulRVA, PVOID pvBuffer, ULONG cbBuffer)
|
|---|
| 220 | {
|
|---|
| 221 | /*
|
|---|
| 222 | * five cases:
|
|---|
| 223 | * 1) entire area is within the buffer.
|
|---|
| 224 | * 2) start of area is within the buffer.
|
|---|
| 225 | * 3) end of area is within the buffer.
|
|---|
| 226 | * 4) the area is larger than the buffer, covering it.
|
|---|
| 227 | * 5) the area is outside the buffer.
|
|---|
| 228 | *
|
|---|
| 229 | * these are optimal: 1, 2, and 5.
|
|---|
| 230 | * The request is allways process from start to end. This will make case 3 and 4 less effecient.
|
|---|
| 231 | */
|
|---|
| 232 | #ifdef DEBUG
|
|---|
| 233 | if (ulRVA == ~0UL || (ULONG)pvBuffer < 0x10000UL || cbBuffer == 0UL || cbBuffer >= 0x10000000UL)
|
|---|
| 234 | return ERROR_INVALID_PARAMETER;
|
|---|
| 235 | #endif
|
|---|
| 236 |
|
|---|
| 237 | do
|
|---|
| 238 | {
|
|---|
| 239 | if (ulRVA >= this->ulRVA && ulRVA < this->ulRVA + sizeof(achBuffer))
|
|---|
| 240 | { /* in buffer */
|
|---|
| 241 | register ULONG cbRead = sizeof(achBuffer) - (ulRVA - this->ulRVA);
|
|---|
| 242 | cbRead = min(cbRead, cbBuffer);
|
|---|
| 243 | memcpy(pvBuffer, &achBuffer[ulRVA - this->ulRVA], (size_t)cbRead);
|
|---|
| 244 | if (cbBuffer == cbRead)
|
|---|
| 245 | return NO_ERROR;
|
|---|
| 246 | cbBuffer -= cbRead;
|
|---|
| 247 | pvBuffer = (PVOID)((ULONG)pvBuffer + cbRead);
|
|---|
| 248 | ulRVA += cbRead;
|
|---|
| 249 | }
|
|---|
| 250 | else
|
|---|
| 251 | { /* not in buffer, then read it into the buffer! */
|
|---|
| 252 | APIRET rc = readToBuffer(ulRVA);
|
|---|
| 253 | if (rc != NO_ERROR)
|
|---|
| 254 | return rc;
|
|---|
| 255 | }
|
|---|
| 256 | } while (cbBuffer != 0UL);
|
|---|
| 257 |
|
|---|
| 258 | return NO_ERROR;
|
|---|
| 259 | }
|
|---|
| 260 | #endif
|
|---|
| 261 |
|
|---|
| 262 | ULONG dupString(ULONG ulRVA, PSZ *ppsz);
|
|---|
| 263 | BufferedRVARead & operator =(BufferedRVARead &SrcObj);
|
|---|
| 264 |
|
|---|
| 265 | private:
|
|---|
| 266 | ULONG readToBuffer(ULONG ulRVA);
|
|---|
| 267 |
|
|---|
| 268 | private:
|
|---|
| 269 | SFN hFile; /* Filehandle. */
|
|---|
| 270 | ULONG cObjects; /* Count of objects */
|
|---|
| 271 | PCLXOBJECT paObjects; /* Pointer to a readonly array of objects. */
|
|---|
| 272 | ULONG ulRVA; /* RVA for the buffer start */
|
|---|
| 273 | CHAR achBuffer[BUFFEREDRVAREADER_BUFFERSIZE]; /* Buffer. NOTE! Code assumes that it is a page. */
|
|---|
| 274 | };
|
|---|
| 275 |
|
|---|
| 276 | #endif
|
|---|
