source: trunk/src/kernel32/winimagepeldr.cpp@ 5545

Last change on this file since 5545 was 5545, checked in by sandervl, 24 years ago

fail properly when dll can't be loaded
File size: 72.3 KB
Line 
1/* $Id: winimagepeldr.cpp,v 1.74 2001-04-19 08:32:49 sandervl Exp $ */
2
3/*
4 * Win32 PE loader Image base class
5 *
6 * Copyright 1998-2000 Sander van Leeuwen (sandervl@xs4all.nl)
7 * Copyright 1998 Knut St. Osmundsen
8 *
9 * Project Odin Software License can be found in LICENSE.TXT
10 *
11 * TODO: Check psh[i].Characteristics for more than only the code section
12 * TODO: Make resource section readonly when GDI32 is fixed
13 * TODO: Loading of forwarder dlls before handling imports might not be correct
14 * (circular dependencies; have to check what NT does)
15 * TODO: Two LoadLibrary calls in two threads at the same time won't be handled properly (rare but possible)
16 *
17 * NOTE: FLAG_PELDR_LOADASDATAFILE is a special flag to only load the resource directory
18 * of a PE image. Processing imports, sections etc is not done.
19 * This is useful for GetVersionSize/Resource in case it wants to
20 * get version info of an image that is not loaded.
21 * So an instance of this type can't be used for anything but resource lookup!
22 *
23 *
24 */
25#define INCL_DOSFILEMGR /* File Manager values */
26#define INCL_DOSMODULEMGR
27#define INCL_DOSERRORS /* DOS Error values */
28#define INCL_DOSPROCESS /* DOS Process values */
29#define INCL_DOSMISC /* DOS Miscellanous values */
30#define INCL_WIN
31#define INCL_BASE
32#include <os2wrap.h> //Odin32 OS/2 api wrappers
33
34#include <stdio.h>
35#include <string.h>
36#include <stdlib.h>
37
38#include <assert.h>
39//use a different logfile
40#define PRIVATE_LOGGING
41#include <misc.h>
42#include <win32api.h>
43#include "winimagebase.h"
44#include "winimagepeldr.h"
45#include "windllpeldr.h"
46#include "windlllx.h"
47#include "winexebase.h"
48#include <pefile.h>
49#include <unicode.h>
50#include "oslibmisc.h"
51#include "initterm.h"
52#include <win\virtual.h>
53#include "oslibdos.h"
54#include "mmap.h"
55#include <wprocess.h>
56
57//Define COMMIT_ALL to let the pe loader commit all sections of the image
58//This is very useful during debugging as you'll get lots of exceptions
59//otherwise.
60//#ifdef DEBUG
61#define COMMIT_ALL
62//#endif
63
64char szErrorTitle[] = "Odin";
65char szMemErrorMsg[] = "Memory allocation failure";
66char szFileErrorMsg[] = "File IO error";
67char szPEErrorMsg[] = "Not a valid win32 exe. (perhaps 16 bits windows)";
68char szCPUErrorMsg[] = "Executable doesn't run on x86 machines";
69char szExeErrorMsg[] = "File isn't an executable";
70char szInteralErrorMsg[]= "Internal Error";
71char szErrorModule[128] = "";
72
73#ifdef DEBUG
74static FILE *_privateLogFile = NULL;
75#endif
76
77ULONG MissingApi();
78
79//******************************************************************************
80//******************************************************************************
81void OpenPrivateLogFilePE()
82{
83#ifdef DEBUG
84 char logname[CCHMAXPATH];
85
86 sprintf(logname, "pe_%d.log", loadNr);
87 _privateLogFile = fopen(logname, "w");
88 if(_privateLogFile == NULL) {
89 sprintf(logname, "%spe_%d.log", kernel32Path, loadNr);
90 _privateLogFile = fopen(logname, "w");
91 }
92 dprintfGlobal(("PE LOGFILE : %s", logname));
93#endif
94}
95//******************************************************************************
96//******************************************************************************
97void ClosePrivateLogFilePE()
98{
99#ifdef DEBUG
100 if(_privateLogFile) {
101 fclose(_privateLogFile);
102 _privateLogFile = NULL;
103 }
104#endif
105}
106//******************************************************************************
107//******************************************************************************
108Win32PeLdrImage::Win32PeLdrImage(char *pszFileName, BOOL isExe) :
109 Win32ImageBase(-1),
110 nrsections(0), imageSize(0), dwFlags(0), section(NULL),
111 imageVirtBase(-1), realBaseAddress(0), imageVirtEnd(0),
112 nrNameExports(0), nrOrdExports(0), nameexports(NULL), ordexports(NULL),
113 memmap(NULL), pFixups(NULL), dwFixupSize(0), curnameexport(NULL), curordexport(NULL)
114{
115 HFILE dllfile;
116
117 strcpy(szFileName, pszFileName);
118 strupr(szFileName);
119 if(isExe) {
120 if(!strchr(szFileName, '.')) {
121 strcat(szFileName,".EXE");
122 }
123 dllfile = OSLibDosOpen(szFileName, OSLIB_ACCESS_READONLY|OSLIB_ACCESS_SHAREDENYNONE);
124 if(dllfile == NULL) {
125 if(!strstr(szFileName, ".EXE")) {
126 strcat(szFileName,".EXE");
127 }
128 dllfile = OSLibDosOpen(szFileName, OSLIB_ACCESS_READONLY|OSLIB_ACCESS_SHAREDENYNONE);
129 if(dllfile == NULL) {
130 OSLibDosSearchPath(OSLIB_SEARCHENV, "PATH", szFileName, szFileName, sizeof(szFileName));
131 }
132 }
133 else OSLibDosClose(dllfile);
134 }
135 else {
136 findDll(szFileName, szModule, sizeof(szModule));
137 strcpy(szFileName, szModule);
138 }
139 strcpy(szModule, OSLibStripPath(szFileName));
140 strupr(szModule);
141}
142//******************************************************************************
143//******************************************************************************
144Win32PeLdrImage::~Win32PeLdrImage()
145{
146 if(memmap)
147 delete memmap;
148
149 if(hFile) {
150 OSLibDosClose(hFile);
151 hFile = 0;
152 }
153
154 if(realBaseAddress)
155 DosFreeMem((PVOID)realBaseAddress);
156
157 if(nameexports)
158 free(nameexports);
159
160 if(ordexports)
161 free(ordexports);
162
163 if(section)
164 free(section);
165}
166//******************************************************************************
167//******************************************************************************
168BOOL Win32PeLdrImage::init(ULONG reservedMem)
169{
170 LPVOID win32file = NULL;
171 ULONG filesize, ulRead, ulNewPos;
172 PIMAGE_SECTION_HEADER psh;
173 IMAGE_SECTION_HEADER sh;
174 IMAGE_TLS_DIRECTORY *tlsDir = NULL;
175 int nSections, i;
176 char szFullPath[CCHMAXPATH] = "";
177 IMAGE_DOS_HEADER doshdr;
178 ULONG signature;
179
180 hFile = OSLibDosOpen(szFileName, OSLIB_ACCESS_READONLY|OSLIB_ACCESS_SHAREDENYNONE);
181
182 //default error:
183 strcpy(szErrorModule, OSLibStripPath(szFileName));
184 if(hFile == NULL) {
185 goto failure;
186 }
187 //read dos header
188 if(DosRead(hFile, (LPVOID)&doshdr, sizeof(doshdr), &ulRead)) {
189 goto failure;
190 }
191 if(OSLibDosSetFilePtr(hFile, doshdr.e_lfanew, OSLIB_SETPTR_FILE_BEGIN) == -1) {
192 goto failure;
193 }
194 //read signature dword
195 if(DosRead(hFile, (LPVOID)&signature, sizeof(signature), &ulRead)) {
196 goto failure;
197 }
198 //read pe header
199 if(DosRead(hFile, (LPVOID)&fh, sizeof(fh), &ulRead)) {
200 goto failure;
201 }
202 //read optional header
203 if(DosRead(hFile, (LPVOID)&oh, sizeof(oh), &ulRead)) {
204 goto failure;
205 }
206 if(doshdr.e_magic != IMAGE_DOS_SIGNATURE || signature != IMAGE_NT_SIGNATURE) {
207 dprintf((LOG, "Not a valid PE file (probably a 16 bits windows exe/dll)!"));
208 WinMessageBox(HWND_DESKTOP, HWND_DESKTOP, szPEErrorMsg, szErrorTitle, 0, MB_OK | MB_ERROR | MB_MOVEABLE);
209 goto failure;
210 }
211
212 if(oh.SizeOfImage == 0) {//just in case
213 oh.SizeOfImage = OSLibDosGetFileSize(hFile, NULL);
214 }
215
216 imageSize = oh.SizeOfImage;
217 //Allocate memory to hold the entire image
218 if(allocSections(reservedMem) == FALSE) {
219 dprintf((LOG, "Failed to allocate image memory for %s at %x, rc %d", szFileName, oh.ImageBase, errorState));;
220 goto failure;
221 }
222
223 memmap = new Win32MemMap(this, realBaseAddress, imageSize);
224 if(memmap == NULL || !memmap->Init()) {
225 goto failure;
226 }
227 win32file = memmap->mapViewOfFile(0, 0, 2);
228
229 if(DosQueryPathInfo(szFileName, FIL_QUERYFULLNAME, szFullPath, sizeof(szFullPath)) == 0) {
230 setFullPath(szFullPath);
231 }
232
233 if(!(fh.Characteristics & IMAGE_FILE_EXECUTABLE_IMAGE)) {//not valid
234 dprintf((LOG, "Not a valid PE file!"));
235 WinMessageBox(HWND_DESKTOP, HWND_DESKTOP, szPEErrorMsg, szErrorTitle, 0, MB_OK | MB_ERROR | MB_MOVEABLE);
236 goto failure;
237 }
238 if(fh.Machine != IMAGE_FILE_MACHINE_I386) {
239 dprintf((LOG, "Doesn't run on x86 processors!"));
240 WinMessageBox(HWND_DESKTOP, HWND_DESKTOP, szCPUErrorMsg, szErrorTitle, 0, MB_OK | MB_ERROR | MB_MOVEABLE);
241 goto failure;
242 }
243 //IMAGE_FILE_SYSTEM == only drivers (device/file system/video etc)?
244 if(fh.Characteristics & IMAGE_FILE_SYSTEM) {
245 dprintf((LOG, "Can't convert system files"));
246 WinMessageBox(HWND_DESKTOP, HWND_DESKTOP, szExeErrorMsg, szErrorTitle, 0, MB_OK | MB_ERROR | MB_MOVEABLE);
247 goto failure;
248 }
249
250 if(fh.Characteristics & IMAGE_FILE_RELOCS_STRIPPED) {
251 dprintf((LOG, "No fixups, might not run!"));
252 }
253
254 dprintf((LOG, "PE file : %s", szFileName));
255 dprintf((LOG, "PE Optional header: "));
256 dprintf((LOG, "Preferred address : %d", oh.ImageBase ));
257 dprintf((LOG, "Base Of Code : %d", oh.BaseOfCode ));
258 dprintf((LOG, "CodeSize : %d", oh.SizeOfCode ));
259 dprintf((LOG, "Base Of Data : %d", oh.BaseOfData ));
260 dprintf((LOG, "Data Size (uninit): %d", oh.SizeOfUninitializedData ));
261 dprintf((LOG, "Data Size (init) : %d", oh.SizeOfInitializedData ));
262 dprintf((LOG, "Entry Point : %d", oh.AddressOfEntryPoint ));
263 dprintf((LOG, "Section Alignment : %d", oh.SectionAlignment ));
264 dprintf((LOG, "Stack Reserve size: %d", oh.SizeOfStackReserve ));
265 dprintf((LOG, "Stack Commit size : %d", oh.SizeOfStackCommit ));
266 dprintf((LOG, "SizeOfHeapReserve : %d", oh.SizeOfHeapReserve ));
267 dprintf((LOG, "SizeOfHeapCommit : %d", oh.SizeOfHeapCommit ));
268 dprintf((LOG, "FileAlignment : %d", oh.FileAlignment ));
269 dprintf((LOG, "Subsystem : %d", oh.Subsystem ));
270 dprintf((LOG, "Image Size : %d", oh.SizeOfImage ));
271 dprintf((LOG, "Header Size : %d", oh.SizeOfHeaders ));
272 dprintf((LOG, "MajorImageVersion : %d", oh.MajorImageVersion ));
273 dprintf((LOG, "MinorImageVersion : %d", oh.MinorImageVersion ));
274
275 //get header page
276 commitPage(realBaseAddress, FALSE);
277
278 nSections = NR_SECTIONS(win32file);
279 section = (Section *)malloc(nSections*sizeof(Section));
280 if(section == NULL) {
281 DebugInt3();
282 goto failure;
283 }
284 memset(section, 0, nSections*sizeof(Section));
285
286 if(!(dwFlags & FLAG_PELDR_LOADASDATAFILE))
287 {
288 imageSize = 0;
289 if ((psh = (PIMAGE_SECTION_HEADER)SECTIONHDROFF (win32file)) != NULL)
290 {
291 dprintf((LOG, "*************************PE SECTIONS START**************************" ));
292 for (i=0; i<nSections; i++)
293 {
294 dprintf((LOG, "Raw data size: %x", psh[i].SizeOfRawData ));
295 dprintf((LOG, "Virtual Address: %x", psh[i].VirtualAddress ));
296 dprintf((LOG, "Virtual Address Start:%x", psh[i].VirtualAddress+oh.ImageBase ));
297 dprintf((LOG, "Virtual Address End: %x", psh[i].VirtualAddress+oh.ImageBase+psh[i].Misc.VirtualSize ));
298 dprintf((LOG, "Virtual Size: %x", psh[i].Misc.VirtualSize ));
299 dprintf((LOG, "Pointer to raw data: %x", psh[i].PointerToRawData ));
300 dprintf((LOG, "Section flags: %x\n\n", psh[i].Characteristics ));
301
302 if(IsSectionType(win32file, &psh[i], IMAGE_DIRECTORY_ENTRY_BASERELOC))
303 {
304 dprintf((LOG, ".reloc" ));
305 addSection(SECTION_RELOC, psh[i].PointerToRawData,
306 psh[i].SizeOfRawData, psh[i].VirtualAddress + oh.ImageBase,
307 psh[i].Misc.VirtualSize, psh[i].Characteristics);
308 continue;
309 }
310 if(IsSectionType(win32file, &psh[i], IMAGE_DIRECTORY_ENTRY_EXPORT))
311 {
312 //SvL: Angus.exe has empty export section that's really an
313 // uninitialized data section
314 if(psh[i].SizeOfRawData) {
315 dprintf((LOG, ".edata" ));
316 addSection(SECTION_EXPORT, psh[i].PointerToRawData,
317 psh[i].SizeOfRawData, psh[i].VirtualAddress + oh.ImageBase,
318 psh[i].Misc.VirtualSize, psh[i].Characteristics);
319 continue;
320 }
321 }
322 if(IsSectionType(win32file, &psh[i], IMAGE_DIRECTORY_ENTRY_RESOURCE))
323 {
324 dprintf((LOG, ".rsrc" ));
325 addSection(SECTION_RESOURCE, psh[i].PointerToRawData,
326 psh[i].SizeOfRawData, psh[i].VirtualAddress + oh.ImageBase,
327 psh[i].Misc.VirtualSize, psh[i].Characteristics);
328 continue;
329 }
330 if(IsSectionType(win32file, &psh[i], IMAGE_DIRECTORY_ENTRY_TLS))
331 {
332 dprintf((LOG, "TLS section"));
333 tlsDir = (IMAGE_TLS_DIRECTORY *)ImageDirectoryOffset(win32file, IMAGE_DIRECTORY_ENTRY_TLS);
334 if(tlsDir) {
335 addSection(SECTION_TLS, psh[i].PointerToRawData,
336 psh[i].SizeOfRawData, psh[i].VirtualAddress + oh.ImageBase,
337 psh[i].Misc.VirtualSize, psh[i].Characteristics);
338 }
339 continue;
340 }
341 if(IsSectionType(win32file, &psh[i], IMAGE_DIRECTORY_ENTRY_DEBUG))
342 {
343 dprintf((LOG, ".rdebug" ));
344 addSection(SECTION_DEBUG, psh[i].PointerToRawData,
345 psh[i].SizeOfRawData, psh[i].VirtualAddress + oh.ImageBase,
346 psh[i].Misc.VirtualSize, psh[i].Characteristics);
347 continue;
348 }
349 if(IsSectionType(win32file, &psh[i], IMAGE_DIRECTORY_ENTRY_IMPORT))
350 {
351 int type = SECTION_IMPORT;
352
353 dprintf((LOG, "Import Data Section" ));
354 if(psh[i].Characteristics & IMAGE_SCN_CNT_CODE) {
355 dprintf((LOG, "Also Code Section"));
356 type |= SECTION_CODE;
357 }
358 addSection(type, psh[i].PointerToRawData,
359 psh[i].SizeOfRawData, psh[i].VirtualAddress + oh.ImageBase,
360 psh[i].Misc.VirtualSize, psh[i].Characteristics);
361 continue;
362 }
363
364 //KSO Sun 1998-08-09: Borland does not alway set the CODE flag for its "CODE" section
365 if(psh[i].Characteristics & IMAGE_SCN_CNT_CODE ||
366 (psh[i].Characteristics & IMAGE_SCN_MEM_EXECUTE &&
367 !(psh[i].Characteristics & (IMAGE_SCN_CNT_UNINITIALIZED_DATA | IMAGE_SCN_CNT_INITIALIZED_DATA))) //KSO: make sure its not marked as a datasection
368 )
369 {
370 dprintf((LOG, "Code Section"));
371 addSection(SECTION_CODE, psh[i].PointerToRawData,
372 psh[i].SizeOfRawData, psh[i].VirtualAddress + oh.ImageBase,
373 psh[i].Misc.VirtualSize, psh[i].Characteristics);
374 continue;
375 }
376 if(!(psh[i].Characteristics & IMAGE_SCN_MEM_WRITE)) { //read only data section
377 dprintf((LOG, "Read Only Data Section" ));
378 addSection(SECTION_READONLYDATA, psh[i].PointerToRawData,
379 psh[i].SizeOfRawData, psh[i].VirtualAddress + oh.ImageBase,
380 psh[i].Misc.VirtualSize, psh[i].Characteristics);
381 continue;
382 }
383 if(psh[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA) {
384 dprintf((LOG, "Uninitialized Data Section" ));
385 addSection(SECTION_UNINITDATA, psh[i].PointerToRawData,
386 psh[i].SizeOfRawData, psh[i].VirtualAddress + oh.ImageBase,
387 psh[i].Misc.VirtualSize, psh[i].Characteristics);
388 continue;
389 }
390 if(psh[i].Characteristics & IMAGE_SCN_CNT_INITIALIZED_DATA) {
391 dprintf((LOG, "Initialized Data Section" ));
392 addSection(SECTION_INITDATA, psh[i].PointerToRawData,
393 psh[i].SizeOfRawData, psh[i].VirtualAddress + oh.ImageBase,
394 psh[i].Misc.VirtualSize, psh[i].Characteristics);
395 continue;
396 }
397 if(psh[i].Characteristics & (IMAGE_SCN_MEM_WRITE | IMAGE_SCN_MEM_READ)) {
398 dprintf((LOG, "Other Section, stored as read/write uninit data" ));
399 addSection(SECTION_UNINITDATA, psh[i].PointerToRawData,
400 psh[i].SizeOfRawData, psh[i].VirtualAddress + oh.ImageBase,
401 psh[i].Misc.VirtualSize, psh[i].Characteristics);
402 continue;
403 }
404 dprintf((LOG, "Unknown section" ));
405 goto failure;
406 }
407 }
408 }
409 else {
410 if(GetSectionHdrByImageDir(win32file, IMAGE_DIRECTORY_ENTRY_RESOURCE, &sh))
411 {
412 dprintf((LOG, "*************************PE SECTIONS START**************************" ));
413 dprintf((LOG, "Raw data size: %x", sh.SizeOfRawData ));
414 dprintf((LOG, "Virtual Address: %x", sh.VirtualAddress ));
415 dprintf((LOG, "Virtual Address Start:%x", sh.VirtualAddress+oh.ImageBase ));
416 dprintf((LOG, "Virtual Address End: %x", sh.VirtualAddress+oh.ImageBase+sh.Misc.VirtualSize ));
417 dprintf((LOG, "Virtual Size: %x", sh.Misc.VirtualSize ));
418 dprintf((LOG, "Pointer to raw data: %x", sh.PointerToRawData ));
419 dprintf((LOG, "Section flags: %x\n\n", sh.Characteristics ));
420 addSection(SECTION_RESOURCE, sh.PointerToRawData,
421 sh.SizeOfRawData, sh.VirtualAddress + oh.ImageBase,
422 sh.Misc.VirtualSize, sh.Characteristics);
423 }
424 }
425 dprintf((LOG, "*************************PE SECTIONS END **************************" ));
426
427 imageSize += imageVirtBase - oh.ImageBase;
428 dprintf((LOG, "Total size of Image %x", imageSize ));
429 dprintf((LOG, "imageVirtBase %x", imageVirtBase ));
430 dprintf((LOG, "imageVirtEnd %x", imageVirtEnd ));
431
432 //In case there are any gaps between sections, adjust size
433 if(imageSize != imageVirtEnd - oh.ImageBase)
434 {
435 dprintf((LOG, "imageSize != imageVirtEnd - oh.ImageBase!" ));
436 imageSize = imageVirtEnd - oh.ImageBase;
437 }
438 if(imageSize < oh.SizeOfImage) {
439 imageSize = oh.SizeOfImage;
440 }
441
442 dprintf((LOG, "OS/2 base address %x", realBaseAddress ));
443 if(oh.AddressOfEntryPoint) {
444 entryPoint = realBaseAddress + oh.AddressOfEntryPoint;
445 }
446 else {
447 dprintf((LOG, "EntryPoint == NULL" ));
448 entryPoint = NULL;
449 }
450
451 //set memory protection flags
452 if(setMemFlags() == FALSE) {
453 dprintf((LOG, "Failed to set memory protection" ));
454 goto failure;
455 }
456
457 if(realBaseAddress != oh.ImageBase && !(dwFlags & FLAG_PELDR_LOADASDATAFILE)) {
458 pFixups = (PIMAGE_BASE_RELOCATION)ImageDirectoryOffset(win32file, IMAGE_DIRECTORY_ENTRY_BASERELOC);
459 dwFixupSize = ImageDirectorySize(win32file, IMAGE_DIRECTORY_ENTRY_BASERELOC);
460 commitPage((ULONG)pFixups, FALSE);
461 }
462
463 if(!(dwFlags & FLAG_PELDR_LOADASDATAFILE))
464 {
465 if(tlsDir = (IMAGE_TLS_DIRECTORY *)ImageDirectoryOffset(win32file, IMAGE_DIRECTORY_ENTRY_TLS))
466 {
467 Section *sect;
468 BOOL fTLSFixups = FALSE;
469
470 sect = findSectionByAddr(tlsDir->StartAddressOfRawData);
471 //There might be fixups for the TLS structure, so search the sections
472 //by the OS/2 virtual address too
473 if(sect == NULL) {
474 sect = findSectionByOS2Addr(tlsDir->StartAddressOfRawData);
475 fTLSFixups = TRUE;
476 }
477
478 dprintf((LOG, "TLS Directory" ));
479 dprintf((LOG, "TLS Address of Index %x", tlsDir->AddressOfIndex ));
480 dprintf((LOG, "TLS Address of Callbacks %x", tlsDir->AddressOfCallBacks ));
481 dprintf((LOG, "TLS SizeOfZeroFill %x", tlsDir->SizeOfZeroFill ));
482 dprintf((LOG, "TLS Characteristics %x", tlsDir->Characteristics ));
483 if(sect == NULL) {
484 dprintf((LOG, "Couldn't find TLS section!!" ));
485 goto failure;
486 }
487 setTLSAddress((char *)sect->realvirtaddr);
488 setTLSInitSize(tlsDir->EndAddressOfRawData - tlsDir->StartAddressOfRawData);
489 setTLSTotalSize(tlsDir->EndAddressOfRawData - tlsDir->StartAddressOfRawData + tlsDir->SizeOfZeroFill);
490
491 fTLSFixups = FALSE;
492 sect = findSectionByAddr((ULONG)tlsDir->AddressOfIndex);
493 //There might be fixups for the TLS structure, so search the sections
494 //by the OS/2 virtual address too
495 if(sect == NULL) {
496 sect = findSectionByOS2Addr((ULONG)tlsDir->AddressOfIndex);
497 fTLSFixups = TRUE;
498 }
499 if(sect == NULL) {
500 dprintf((LOG, "Couldn't find TLS AddressOfIndex section!!" ));
501 goto failure;
502 }
503 if(fTLSFixups) {
504 setTLSIndexAddr((LPDWORD)tlsDir->AddressOfIndex); //no fixup required
505 }
506 else {//need to add a manual fixup
507 setTLSIndexAddr((LPDWORD)(sect->realvirtaddr + ((ULONG)tlsDir->AddressOfIndex - sect->virtaddr)));
508 }
509
510 if((ULONG)tlsDir->AddressOfCallBacks != 0)
511 {
512 fTLSFixups = FALSE;
513
514 sect = findSectionByAddr((ULONG)tlsDir->AddressOfCallBacks);
515 //There might be fixups for the TLS structure, so search the sections
516 //by the OS/2 virtual address too
517 if(sect == NULL) {
518 sect = findSectionByOS2Addr((ULONG)tlsDir->AddressOfIndex);
519 fTLSFixups = TRUE;
520 }
521 if(sect == NULL) {
522 dprintf((LOG, "Couldn't find TLS AddressOfCallBacks section!!" ));
523 goto failure;
524 }
525 if(fTLSFixups) {
526 setTLSCallBackAddr((PIMAGE_TLS_CALLBACK *)tlsDir->AddressOfCallBacks); //no fixup required
527 }
528 else {//need to add a manual fixup
529 setTLSCallBackAddr((PIMAGE_TLS_CALLBACK *)(sect->realvirtaddr + ((ULONG)tlsDir->AddressOfCallBacks - sect->virtaddr)));
530 }
531 //modify tls callback pointers for new image base address
532 int i = 0;
533 while(tlsCallBackAddr[i])
534 {
535 fTLSFixups = FALSE;
536
537 sect = findSectionByAddr((ULONG)tlsCallBackAddr[i]);
538 //There might be fixups for the TLS structure, so search the sections
539 //by the OS/2 virtual address too
540 if(sect == NULL) {
541 sect = findSectionByOS2Addr((ULONG)tlsCallBackAddr[i]);
542 fTLSFixups = TRUE;
543 }
544 if(sect == NULL) {
545 dprintf((LOG, "Couldn't find TLS callback section!!" ));
546 goto failure;
547 }
548 if(fTLSFixups) {
549 tlsCallBackAddr[i] = tlsCallBackAddr[i];
550 }
551 else tlsCallBackAddr[i] = (PIMAGE_TLS_CALLBACK)(realBaseAddress + ((ULONG)tlsCallBackAddr[i] - oh.ImageBase));
552 i++;
553 }
554 }
555 }
556
557#ifdef DEBUG
558 dprintf((LOG, "Image directories: "));
559 for (i = 0; i < IMAGE_NUMBEROF_DIRECTORY_ENTRIES; i++)
560 {
561 char *pszName;
562
563 if(oh.DataDirectory[i].VirtualAddress && oh.DataDirectory[i].Size) {
564 switch (i)
565 {
566 case IMAGE_DIRECTORY_ENTRY_EXPORT: pszName = "Export Directory (IMAGE_DIRECTORY_ENTRY_EXPORT)"; break;
567 case IMAGE_DIRECTORY_ENTRY_IMPORT: pszName = "Import Directory (IMAGE_DIRECTORY_ENTRY_IMPORT)"; break;
568 case IMAGE_DIRECTORY_ENTRY_RESOURCE: pszName = "Resource Directory (IMAGE_DIRECTORY_ENTRY_RESOURCE)"; break;
569 case IMAGE_DIRECTORY_ENTRY_EXCEPTION: pszName = "Exception Directory (IMAGE_DIRECTORY_ENTRY_EXCEPTION)"; break;
570 case IMAGE_DIRECTORY_ENTRY_SECURITY: pszName = "Security Directory (IMAGE_DIRECTORY_ENTRY_SECURITY)"; break;
571 case IMAGE_DIRECTORY_ENTRY_BASERELOC: pszName = "Base Relocation Table (IMAGE_DIRECTORY_ENTRY_BASERELOC)"; break;
572 case IMAGE_DIRECTORY_ENTRY_DEBUG: pszName = "Debug Directory (IMAGE_DIRECTORY_ENTRY_DEBUG)"; break;
573 case IMAGE_DIRECTORY_ENTRY_COPYRIGHT: pszName = "Description String (IMAGE_DIRECTORY_ENTRY_COPYRIGHT)"; break;
574 case IMAGE_DIRECTORY_ENTRY_GLOBALPTR: pszName = "Machine Value (MIPS GP) (IMAGE_DIRECTORY_ENTRY_GLOBALPTR)"; break;
575 case IMAGE_DIRECTORY_ENTRY_TLS: pszName = "TLS Directory (IMAGE_DIRECTORY_ENTRY_TLS)"; break;
576 case IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG: pszName = "Load Configuration Directory (IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG)"; break;
577 case IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT:pszName = "Bound Import Directory in headers (IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT)"; break;
578 case IMAGE_DIRECTORY_ENTRY_IAT: pszName = "Import Address Table (IMAGE_DIRECTORY_ENTRY_IAT)"; break;
579 default:
580 pszName = "unknown";
581 }
582 dprintf((LOG, "directory %s", pszName));
583 dprintf((LOG, " Address 0x%08x", oh.DataDirectory[i].VirtualAddress));
584 dprintf((LOG, " Size 0x%08x", oh.DataDirectory[i].Size));
585 }
586 }
587 dprintf((LOG, "\n\n"));
588#endif
589
590#ifdef COMMIT_ALL
591 for (i=0; i<nSections; i++) {
592 commitPage((ULONG)section[i].realvirtaddr, FALSE, COMPLETE_SECTION);
593 }
594#else
595 for (i=0; i<nSections; i++) {
596 switch(section[i].type)
597 {
598 case SECTION_IMPORT:
599 case SECTION_RELOC:
600 case SECTION_EXPORT:
601 commitPage((ULONG)section[i].realvirtaddr, FALSE, COMPLETE_SECTION);
602 break;
603 }
604 }
605#endif
606 if(processExports((char *)win32file) == FALSE) {
607 dprintf((LOG, "Failed to process exported apis" ));
608 goto failure;
609 }
610 }
611#ifdef COMMIT_ALL
612 else {
613 commitPage((ULONG)section[0].realvirtaddr, FALSE, COMPLETE_SECTION);
614 }
615#endif
616
617#ifndef COMMIT_ALL
618 if(entryPoint) {
619 //commit code at entrypoint, since we going to call it anyway
620 commitPage((ULONG)entryPoint, FALSE);
621 }
622#endif
623
624 //SvL: Use pointer to image header as module handle now. Some apps needs this
625 hinstance = (HINSTANCE)realBaseAddress;
626
627 //SvL: Set instance handle in process database structure
628 SetPDBInstance(hinstance);
629
630 //PH: get pResRootDir pointer correct first, since processImports may
631 // implicitly call functions depending on it.
632 if(oh.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress && oh.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE].Size)
633 {
634 //get offset in resource object of directory entry
635 pResRootDir = (PIMAGE_RESOURCE_DIRECTORY)(oh.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress + realBaseAddress);
636 ulRVAResourceSection = oh.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress;
637 }
638
639 //Allocate TLS index for this module
640 //Must do this before dlls are loaded for this module. Some apps assume
641 //they get TLS index 0 for their main executable
642 tlsAlloc();
643 tlsAttachThread(); //setup TLS (main thread)
644
645 if(!(dwFlags & (FLAG_PELDR_LOADASDATAFILE | FLAG_PELDR_SKIPIMPORTS)))
646 {
647 if(processImports((char *)win32file) == FALSE) {
648 dprintf((LOG, "Failed to process imports!" ));
649 goto failure;
650 }
651 }
652 return(TRUE);
653
654failure:
655 if(memmap) {
656 delete memmap;
657 memmap = NULL;
658 }
659 if(hFile) {
660 OSLibDosClose(hFile);
661 hFile = 0;
662 }
663 errorState = ERROR_INTERNAL;
664 return FALSE;
665}
666//******************************************************************************
667// commitPage:
668// commits image page(s) when an access violation exception is received
669// (usually called from exception.cpp; also from other methods in this file)
670//
671// Parameters:
672// virtAddress - address of exception (rounded down to page boundary)
673// fWriteAccess - type of access violation (read or write)
674// fPageCmd - SINGLE_PAGE -> commit single page
675// SECTION_PAGES -> commit default nr of pages
676// COMPLETE_SECTION -> commit entire section
677//
678// Remarks:
679// DosEnterCritSec/DosExitCritSec is used to make sure the other threads in
680// the application can't touch the pages before they are loaded from disk and
681// fixups are applied.
682//
683// TODO:
684// SECTION_PAGES: - don't load pages starting at access violation address, but
685// a region surrounding it (e.g. -32k -> + 32k)
686// this will prevent many pagefaults when the app uses
687// pages with a lower addr.
688//
689//******************************************************************************
690BOOL Win32PeLdrImage::commitPage(ULONG virtAddress, BOOL fWriteAccess, int fPageCmd)
691{
692 Section *section;
693 ULONG offset, size, sectionsize, protflags, fileoffset, range, attr;
694 ULONG ulNewPos, ulRead, orgVirtAddress = virtAddress;
695 APIRET rc;
696
697 //Round down to nearest page boundary
698 virtAddress = virtAddress & ~0xFFF;
699
700 section = findSectionByOS2Addr(virtAddress);
701 if(section == NULL) {
702 section = findSectionByOS2Addr(orgVirtAddress);
703 if(section) {
704 virtAddress = orgVirtAddress;
705 }
706 }
707 if(section == NULL) {
708 size = 4096;
709 sectionsize = 4096;
710 protflags = PAG_READ|PAG_WRITE; //readonly?
711 section = findPreviousSectionByOS2Addr(virtAddress);
712 if(section == NULL) {//access to header
713 offset = 0;
714 fileoffset = virtAddress - realBaseAddress;
715 }
716 else {
717 offset = virtAddress - (section->realvirtaddr + section->virtualsize);
718 fileoffset = section->rawoffset + section->rawsize + offset;
719 }
720 }
721 else {
722 protflags = section->pageflags;
723 offset = virtAddress - section->realvirtaddr;
724 sectionsize = section->virtualsize - offset;
725
726 if(offset > section->rawsize || section->type == SECTION_UNINITDATA) {
727 //unintialized data (set to 0)
728 size = 0;
729 fileoffset = -1;
730 }
731 else {
732 size = section->rawsize-offset;
733 fileoffset = section->rawoffset + offset;
734 }
735 if(fWriteAccess & !(section->pageflags & PAG_WRITE)) {
736 dprintf((LOG, "Win32PeLdrImage::commitPage: No write access to 0%x!", virtAddress));
737 return FALSE;
738 }
739 }
740 //Check range of pages with the same attributes starting at virtAddress
741 //(some pages might already have been loaded)
742 range = sectionsize;
743 rc = DosQueryMem((PVOID)virtAddress, &range, &attr);
744 if(rc) {
745 dprintf((LOG, "Win32PeLdrImage::commitPage: DosQueryMem for %x returned %d", virtAddress, rc));
746 return FALSE;
747 }
748 if(attr & PAG_COMMIT) {
749 dprintf((LOG, "Win32PeLdrImage::commitPage: Memory at 0x%x already committed!", virtAddress));
750 return FALSE;
751 }
752
753 if(fPageCmd == SINGLE_PAGE) {
754 size = min(size, PAGE_SIZE);
755 sectionsize = min(sectionsize, PAGE_SIZE);
756 }
757 else
758 if(fPageCmd == SECTION_PAGES) {
759 size = min(size, DEFAULT_NR_PAGES*PAGE_SIZE);
760 sectionsize = min(sectionsize, DEFAULT_NR_PAGES*PAGE_SIZE);
761 }
762 //else complete section
763
764 size = min(size, range);
765 sectionsize = min(sectionsize, range);
766
767 if(fileoffset != -1) {
768 rc = DosEnterCritSec();
769 if(rc) {
770 dprintf((LOG, "DosEnterCritSec failed with rc %d", rc));
771 goto fail;
772 }
773 rc = DosSetMem((PVOID)virtAddress, sectionsize, PAG_READ|PAG_WRITE|PAG_COMMIT);
774 if(rc) {
775 DosExitCritSec();
776 dprintf((LOG, "Win32PeLdrImage::commitPage: DosSetMem failed (%d)!", rc));
777 goto fail;
778 }
779
780 if(DosSetFilePtr(hFile, fileoffset, FILE_BEGIN, &ulNewPos) == -1) {
781 DosExitCritSec();
782 dprintf((LOG, "Win32PeLdrImage::commitPage: DosSetFilePtr failed for 0x%x!", fileoffset));
783 goto fail;
784 }
785 rc = DosRead(hFile, (PVOID)virtAddress, size, &ulRead);
786 if(rc) {
787 DosExitCritSec();
788 dprintf((LOG, "Win32PeLdrImage::commitPage: DosRead failed for 0x%x %x %x %x (rc=%d)!", virtAddress, size, ulRead, fileoffset, rc));
789 goto fail;
790 }
791 if(ulRead != size) {
792 DosExitCritSec();
793 dprintf((LOG, "Win32PeLdrImage::commitPage: DosRead failed to read %x (%x) bytes at %x for 0x%x!", size, ulRead, fileoffset, virtAddress));
794 goto fail;
795 }
796 setFixups(virtAddress, sectionsize);
797
798 rc = DosSetMem((PVOID)virtAddress, sectionsize, protflags);
799 DosExitCritSec();
800 if(rc) {
801 dprintf((LOG, "Win32PeLdrImage::commitPage: DosSetMem failed (%d)!", rc));
802 goto fail;
803 }
804 }
805 else {
806 rc = DosEnterCritSec();
807 if(rc) {
808 dprintf((LOG, "DosEnterCritSec failed with rc %d", rc));
809 goto fail;
810 }
811
812 rc = DosSetMem((PVOID)virtAddress, sectionsize, PAG_READ|PAG_WRITE|PAG_COMMIT);
813 if(rc) {
814 DosExitCritSec();
815 dprintf((LOG, "Win32PeLdrImage::commitPage: DosSetMem failed (%d)!", rc));
816 goto fail;
817 }
818 setFixups(virtAddress, sectionsize);
819
820 rc = DosSetMem((PVOID)virtAddress, sectionsize, protflags);
821 DosExitCritSec();
822 if(rc) {
823 dprintf((LOG, "Win32PeLdrImage::commitPage: DosSetMem failed (%d)!", rc));
824 goto fail;
825 }
826 }
827 return TRUE;
828
829fail:
830 return FALSE;
831}
832//******************************************************************************
833//******************************************************************************
834void Win32PeLdrImage::addSection(ULONG type, ULONG rawoffset, ULONG rawsize, ULONG virtaddress, ULONG virtsize, ULONG flags)
835{
836 virtsize = max(rawsize, virtsize);
837
838 section[nrsections].rawoffset = rawoffset;
839 section[nrsections].type = type;
840 section[nrsections].rawsize = rawsize;
841 section[nrsections].virtaddr = virtaddress;
842 section[nrsections].flags = flags;
843
844 virtsize = ((virtsize - 1) & ~0xFFF) + PAGE_SIZE;
845 imageSize += virtsize;
846 section[nrsections].virtualsize = virtsize;
847
848 if(virtaddress < imageVirtBase)
849 imageVirtBase = virtaddress;
850 if(virtaddress + virtsize > imageVirtEnd)
851 imageVirtEnd = virtaddress + virtsize;
852
853 nrsections++;
854}
855//******************************************************************************
856//******************************************************************************
857BOOL Win32PeLdrImage::allocSections(ULONG reservedMem)
858{
859 APIRET rc;
860 ULONG baseAddress;
861
862 realBaseAddress = 0;
863
864 //Allocated in by pe.exe
865 if(reservedMem && reservedMem == oh.ImageBase) {
866 realBaseAddress = oh.ImageBase;
867 return TRUE;
868 }
869
870 //SvL: We don't care where the image is loaded for resource lookup
871 if(fh.Characteristics & IMAGE_FILE_RELOCS_STRIPPED && !(dwFlags & FLAG_PELDR_LOADASDATAFILE)) {
872 return allocFixedMem(reservedMem);
873 }
874 rc = DosAllocMem((PPVOID)&baseAddress, imageSize, PAG_READ | PAG_WRITE | flAllocMem);
875 if(rc) {
876 dprintf((LOG, "Win32PeLdrImage::allocSections, DosAllocMem returned %d", rc));
877 errorState = rc;
878 return(FALSE);
879 }
880 realBaseAddress = baseAddress;
881 return(TRUE);
882}
883//******************************************************************************
884//******************************************************************************
885Section *Win32PeLdrImage::findSection(ULONG type)
886{
887 for(int i=0;i<nrsections;i++) {
888 if(section[i].type == type) {
889 return &section[i];
890 }
891 }
892 return NULL;
893}
894//******************************************************************************
895//******************************************************************************
896Section *Win32PeLdrImage::findSectionByAddr(ULONG addr)
897{
898 for(int i=0;i<nrsections;i++) {
899 if(section[i].virtaddr <= addr && section[i].virtaddr + section[i].virtualsize > addr) {
900 return &section[i];
901 }
902 }
903 return NULL;
904}
905//******************************************************************************
906//******************************************************************************
907Section *Win32PeLdrImage::findSectionByOS2Addr(ULONG addr)
908{
909 for(int i=0;i<nrsections;i++) {
910 if(section[i].realvirtaddr <= addr && section[i].realvirtaddr + section[i].virtualsize > addr) {
911 return &section[i];
912 }
913 }
914 return NULL;
915}
916//******************************************************************************
917//******************************************************************************
918Section *Win32PeLdrImage::findPreviousSectionByOS2Addr(ULONG addr)
919{
920 ULONG lowestAddr = 0xffffffff;
921 ULONG index = -1;
922
923 for(int i=0;i<nrsections;i++) {
924 if(section[i].realvirtaddr > addr) {
925 if(section[i].realvirtaddr < lowestAddr) {
926 lowestAddr = section[i].realvirtaddr;
927 index = i;
928 }
929 }
930 }
931 if(index == -1)
932 return NULL;
933
934 return &section[index];
935}
936//******************************************************************************
937#define FALLOC_SIZE (1024*1024)
938//NOTE: Needs testing (while loop)
939//TODO: Free unused (parts of) reservedMem
940//******************************************************************************
941BOOL Win32PeLdrImage::allocFixedMem(ULONG reservedMem)
942{
943 ULONG address = 0;
944 ULONG *memallocs;
945 ULONG alloccnt = 0;
946 ULONG diff, i, baseAddress;
947 APIRET rc;
948 BOOL allocFlags = flAllocMem;
949
950 //Reserve enough space to store 4096 pointers to 1MB memory chunks
951 memallocs = (ULONG *)malloc(4096*sizeof(ULONG *));
952 if(memallocs == NULL) {
953 dprintf((LOG, "allocFixedMem: MALLOC FAILED for memallocs" ));
954 return FALSE;
955 }
956
957 if(oh.ImageBase < 512*1024*1024) {
958 allocFlags = 0;
959 }
960 while(TRUE) {
961 rc = DosAllocMem((PPVOID)&address, FALLOC_SIZE, PAG_READ | allocFlags);
962 if(rc) break;
963
964 dprintf((LOG, "DosAllocMem returned %x", address ));
965 if(address + FALLOC_SIZE >= oh.ImageBase) {
966 if(address > oh.ImageBase) {//we've passed it!
967 DosFreeMem((PVOID)address);
968 break;
969 }
970 //found the right address
971 DosFreeMem((PVOID)address);
972
973 diff = oh.ImageBase - address;
974 if(diff) {
975 rc = DosAllocMem((PPVOID)&address, diff, PAG_READ | allocFlags);
976 if(rc) break;
977 }
978 rc = DosAllocMem((PPVOID)&baseAddress, imageSize, PAG_READ | PAG_WRITE | allocFlags);
979 if(rc) break;
980
981 if(diff) DosFreeMem((PVOID)address);
982
983 realBaseAddress = baseAddress;
984 break;
985 }
986 memallocs[alloccnt++] = address;
987 }
988 for(i=0;i<alloccnt;i++) {
989 DosFreeMem((PVOID)memallocs[i]);
990 }
991 free(memallocs);
992
993 if(realBaseAddress == 0) //Let me guess.. MS Office app?
994 return(FALSE);
995
996 return(TRUE);
997}
998//******************************************************************************
999//******************************************************************************
1000BOOL Win32PeLdrImage::setMemFlags()
1001{
1002 int i;
1003 WINIMAGE_LOOKUP *imgLookup;
1004
1005 imgLookup = WINIMAGE_LOOKUPADDR(realBaseAddress);
1006 imgLookup->magic1 = MAGIC_WINIMAGE;
1007 imgLookup->image = this;
1008 imgLookup->magic2 = MAGIC_WINIMAGE;
1009
1010 // Process all the image sections
1011 for(i=0;i<nrsections;i++) {
1012 section[i].realvirtaddr = realBaseAddress + (section[i].virtaddr - oh.ImageBase);
1013 }
1014
1015 for(i=0;i<nrsections;i++) {
1016 switch(section[i].type)
1017 {
1018 case SECTION_CODE:
1019 case (SECTION_CODE | SECTION_IMPORT):
1020 section[i].pageflags = PAG_EXECUTE | PAG_READ;
1021 if(section[i].flags & IMAGE_SCN_MEM_WRITE)
1022 section[i].pageflags |= PAG_WRITE;
1023 break;
1024 case SECTION_INITDATA:
1025 case SECTION_UNINITDATA:
1026 case SECTION_IMPORT:
1027 case SECTION_TLS:
1028 section[i].pageflags = PAG_WRITE | PAG_READ;
1029 break;
1030
1031 case SECTION_RESOURCE:
1032 //TODO: GDI32 changes some bitmap structures to avoid problems in Open32
1033 // -> causes crashes if resource section is readonly
1034 // -> make it readonly again when gdi32 has been rewritten
1035 section[i].pageflags = PAG_WRITE | PAG_READ;
1036 break;
1037
1038 case SECTION_READONLYDATA:
1039 case SECTION_EXPORT:
1040 default:
1041 section[i].pageflags = PAG_READ;
1042 break;
1043 }
1044 if(section[i].flags & (IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_CNT_UNINITIALIZED_DATA)) {
1045 //SvL: sometimes i.e. import/export sections also contain data
1046 // must make them read/write
1047 section[i].pageflags = PAG_WRITE;
1048 }
1049 }
1050 return(TRUE);
1051}
1052//******************************************************************************
1053//******************************************************************************
1054BOOL Win32PeLdrImage::setFixups(ULONG virtAddress, ULONG size)
1055{
1056 int i, j;
1057 char *page;
1058 ULONG count, newpage;
1059 Section *section;
1060 PIMAGE_BASE_RELOCATION prel = pFixups;
1061
1062 if(realBaseAddress == oh.ImageBase || fh.Characteristics & IMAGE_FILE_RELOCS_STRIPPED) {
1063 return(TRUE);
1064 }
1065
1066 virtAddress -= realBaseAddress;
1067 //round size to next page boundary
1068 size = (size-1) & ~0xFFF;
1069 size += PAGE_SIZE;
1070
1071 if(prel) {
1072 j = 1;
1073 while(((ULONG)prel < (ULONG)pFixups+dwFixupSize) &&
1074 prel->VirtualAddress && prel->VirtualAddress < virtAddress)
1075 {
1076 prel = (PIMAGE_BASE_RELOCATION)((char*)prel + prel->SizeOfBlock);
1077 }
1078 while(((ULONG)prel < (ULONG)pFixups+dwFixupSize) &&
1079 prel->VirtualAddress && prel->VirtualAddress < virtAddress + size)
1080 {
1081 page = (char *)((char *)prel + (ULONG)prel->VirtualAddress);
1082 count = (prel->SizeOfBlock - 8)/2;
1083 j++;
1084 for(i=0;i<count;i++) {
1085 int type = prel->TypeOffset[i] >> 12;
1086 int offset = prel->TypeOffset[i] & 0xFFF;
1087 int fixupsize = 0;
1088
1089 switch(type)
1090 {
1091 case IMAGE_REL_BASED_HIGHLOW:
1092 fixupsize = 4;
1093 break;
1094 case IMAGE_REL_BASED_HIGH:
1095 case IMAGE_REL_BASED_LOW:
1096 fixupsize = 2;
1097 break;
1098 }
1099 //If the fixup crosses the final page boundary,
1100 //then we have to load another page
1101 if(prel->VirtualAddress + offset + fixupsize > virtAddress + size)
1102 {
1103 newpage = realBaseAddress + prel->VirtualAddress + offset + fixupsize;
1104 newpage &= ~0xFFF;
1105
1106 section = findSectionByOS2Addr(newpage);
1107 if(section == NULL) {
1108 //should never happen
1109 dprintf((LOG, "::setFixups -> section == NULL!!"));
1110 return FALSE;
1111 }
1112 //SvL: Read page from disk
1113 commitPage(newpage, FALSE, SINGLE_PAGE);
1114
1115 //SvL: Enable write access (TODO: may need to prevent other threads from being active)
1116 DosSetMem((PVOID)newpage, PAGE_SIZE, PAG_READ|PAG_WRITE);
1117 }
1118
1119 switch(type)
1120 {
1121 case IMAGE_REL_BASED_ABSOLUTE:
1122 break; //skip
1123 case IMAGE_REL_BASED_HIGHLOW:
1124 AddOff32Fixup(prel->VirtualAddress + offset);
1125 break;
1126 case IMAGE_REL_BASED_HIGH:
1127 AddOff16Fixup(prel->VirtualAddress + offset, TRUE);
1128 break;
1129 case IMAGE_REL_BASED_LOW:
1130 AddOff16Fixup(prel->VirtualAddress + offset, FALSE);
1131 break;
1132 case IMAGE_REL_BASED_HIGHADJ:
1133 case IMAGE_REL_BASED_MIPS_JMPADDR:
1134 default:
1135 break;
1136 }
1137 if(prel->VirtualAddress + offset + fixupsize > virtAddress + size)
1138 {
1139 //SvL: Restore original page protection flags (TODO: may need to prevent other threads from being active)
1140 DosSetMem((PVOID)newpage, PAGE_SIZE, section->pageflags);
1141 }
1142 }
1143 prel = (PIMAGE_BASE_RELOCATION)((char*)prel + prel->SizeOfBlock);
1144 }//while
1145 }
1146 else {
1147 dprintf((LOG, "Win32PeLdrImage::setFixups, no fixups at %x, %d", virtAddress, size));
1148 return(FALSE);
1149 }
1150 return(TRUE);
1151}
1152//******************************************************************************
1153//******************************************************************************
1154BOOL Win32PeLdrImage::setFixups(PIMAGE_BASE_RELOCATION prel)
1155{
1156 int i, j;
1157 char *page;
1158 ULONG count;
1159
1160 if(fh.Characteristics & IMAGE_FILE_RELOCS_STRIPPED) {
1161 return(TRUE);
1162 }
1163
1164 if(prel) {
1165 j = 1;
1166 while(prel->VirtualAddress) {
1167 page = (char *)((char *)prel + (ULONG)prel->VirtualAddress);
1168 count = (prel->SizeOfBlock - 8)/2;
1169 dprintf((LOG, "Page %d Address %x Count %d", j, prel->VirtualAddress, count ));
1170 j++;
1171 for(i=0;i<count;i++) {
1172 int type = prel->TypeOffset[i] >> 12;
1173 int offset = prel->TypeOffset[i] & 0xFFF;
1174 switch(type) {
1175 case IMAGE_REL_BASED_ABSOLUTE:
1176//// dprintf((LOG, "absolute fixup; unused" ));
1177 break; //skip
1178 case IMAGE_REL_BASED_HIGHLOW:
1179//// dprintf((LOG, "address ", offset << " type ", type ));
1180 AddOff32Fixup(prel->VirtualAddress + offset);
1181 break;
1182 case IMAGE_REL_BASED_HIGH:
1183 AddOff16Fixup(prel->VirtualAddress + offset, TRUE);
1184 break;
1185 case IMAGE_REL_BASED_LOW:
1186 AddOff16Fixup(prel->VirtualAddress + offset, FALSE);
1187 break;
1188 case IMAGE_REL_BASED_HIGHADJ:
1189 case IMAGE_REL_BASED_MIPS_JMPADDR:
1190 default:
1191 dprintf((LOG, "Unknown/unsupported fixup type!" ));
1192 break;
1193 }
1194 }
1195 prel = (PIMAGE_BASE_RELOCATION)((char*)prel + prel->SizeOfBlock);
1196 }//while
1197 }
1198 else {
1199 dprintf((LOG, "No internal fixups found!" ));
1200 errorState = ERROR_INTERNAL;
1201 return(FALSE);
1202 }
1203 return(TRUE);
1204}
1205//******************************************************************************
1206//******************************************************************************
1207void Win32PeLdrImage::AddOff32Fixup(ULONG fixupaddr)
1208{
1209 ULONG orgaddr;
1210 ULONG *fixup;
1211
1212 fixup = (ULONG *)(fixupaddr + realBaseAddress);
1213 orgaddr = *fixup;
1214// dprintf((LOG, "AddOff32Fixup 0x%x org 0x%x -> new 0x%x", fixup, orgaddr, realBaseAddress + (*fixup - oh.ImageBase)));
1215 *fixup = realBaseAddress + (*fixup - oh.ImageBase);
1216}
1217//******************************************************************************
1218//******************************************************************************
1219void Win32PeLdrImage::AddOff16Fixup(ULONG fixupaddr, BOOL fHighFixup)
1220{
1221 ULONG orgaddr;
1222 USHORT *fixup;
1223
1224 fixup = (USHORT *)(fixupaddr + realBaseAddress);
1225 orgaddr = *fixup;
1226 if(fHighFixup) {
1227 *fixup += (USHORT)((realBaseAddress - oh.ImageBase) >> 16);
1228// dprintf((LOG, "AddOff16FixupH 0x%x org 0x%x -> new 0x%x", fixup, orgaddr, *fixup));
1229 }
1230 else {
1231 *fixup += (USHORT)((realBaseAddress - oh.ImageBase) & 0xFFFF);
1232// dprintf((LOG, "AddOff16FixupL 0x%x org 0x%x -> new 0x%x", fixup, orgaddr, *fixup));
1233 }
1234}
1235//******************************************************************************
1236//******************************************************************************
1237void Win32PeLdrImage::StoreImportByOrd(Win32ImageBase *WinImage, ULONG ordinal, ULONG impaddr)
1238{
1239 ULONG *import;
1240 ULONG apiaddr;
1241
1242 import = (ULONG *)impaddr;
1243 apiaddr = WinImage->getApi(ordinal);
1244 if(apiaddr == 0)
1245 {
1246 dprintf((LOG, "KERNEL32:Win32PeLdrImage - %s.%u not found\n",
1247 WinImage->getModuleName(),
1248 ordinal));
1249
1250 dprintf((LOG, "--->>> NOT FOUND!" ));
1251 *import = (ULONG)MissingApi;
1252 }
1253 else *import = apiaddr;
1254}
1255//******************************************************************************
1256//******************************************************************************
1257void Win32PeLdrImage::StoreImportByName(Win32ImageBase *WinImage, char *impname, ULONG impaddr)
1258{
1259 ULONG *import;
1260 ULONG apiaddr;
1261
1262 import = (ULONG *)impaddr;
1263 apiaddr = WinImage->getApi(impname);
1264 if(apiaddr == 0)
1265 {
1266 dprintf((LOG, "KERNEL32:Win32PeLdrImage - %s.%s not found\n",
1267 WinImage->getModuleName(),
1268 impname));
1269
1270 dprintf((LOG, "--->>> NOT FOUND!" ));
1271 *import = (ULONG)MissingApi;
1272 }
1273 else *import = apiaddr;
1274}
1275//******************************************************************************
1276//******************************************************************************
1277BOOL Win32PeLdrImage::processExports(char *win32file)
1278{
1279 IMAGE_SECTION_HEADER sh;
1280 PIMAGE_EXPORT_DIRECTORY ped;
1281 ULONG *ptrNames, *ptrAddress;
1282 USHORT *ptrOrd;
1283 BOOL fForwarder;
1284 int i;
1285
1286 /* get section header and pointer to data directory for .edata section */
1287 if((ped = (PIMAGE_EXPORT_DIRECTORY)ImageDirectoryOffset
1288 (win32file, IMAGE_DIRECTORY_ENTRY_EXPORT)) != NULL &&
1289 GetSectionHdrByImageDir(win32file, IMAGE_DIRECTORY_ENTRY_EXPORT, &sh) ) {
1290
1291 dprintf((LOG, "Exported Functions: " ));
1292 ptrOrd = (USHORT *)((ULONG)ped->AddressOfNameOrdinals +
1293 (ULONG)win32file);
1294 ptrNames = (ULONG *)((ULONG)ped->AddressOfNames +
1295 (ULONG)win32file);
1296 ptrAddress = (ULONG *)((ULONG)ped->AddressOfFunctions +
1297 (ULONG)win32file);
1298 nrOrdExports = ped->NumberOfFunctions;
1299 nrNameExports = ped->NumberOfNames;
1300
1301 int ord, RVAExport;
1302 char *name;
1303 for(i=0;i<ped->NumberOfNames;i++)
1304 {
1305 fForwarder = FALSE;
1306 ord = ptrOrd[i] + ped->Base;
1307 name = (char *)((ULONG)ptrNames[i] + (ULONG)win32file);
1308 RVAExport = ptrAddress[ptrOrd[i]];
1309
1310 /* forwarder? ulRVA within export directory. */
1311 if(RVAExport > oh.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress &&
1312 RVAExport < oh.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress
1313 + oh.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size)
1314 {
1315 fForwarder = AddForwarder(oh.ImageBase + RVAExport, name, ord);
1316 }
1317 if(!fForwarder) {
1318 //points to code (virtual address relative to oh.ImageBase
1319 AddNameExport(oh.ImageBase + RVAExport, name, ord);
1320 dprintf((LOG, "address 0x%x %s @%d (0x%08x)", RVAExport, name, ord, realBaseAddress + RVAExport));
1321 }
1322 }
1323 for(i=0;i<max(ped->NumberOfNames,ped->NumberOfFunctions);i++)
1324 {
1325 fForwarder = FALSE;
1326 ord = ped->Base + i; //Correct??
1327 RVAExport = ptrAddress[i];
1328 /* forwarder? ulRVA within export directory. */
1329 if(RVAExport > oh.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress &&
1330 RVAExport < oh.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress
1331 + oh.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size)
1332 {
1333 fForwarder = AddForwarder(oh.ImageBase + RVAExport, NULL, ord);
1334 }
1335 if(!fForwarder && RVAExport) {
1336 //points to code (virtual address relative to oh.ImageBase
1337 dprintf((LOG, "ord %d at 0x%08x (0x%08x)", ord, RVAExport, realBaseAddress + RVAExport));
1338 AddOrdExport(oh.ImageBase + RVAExport, ord);
1339 }
1340 }
1341 }
1342 return(TRUE);
1343}
1344//******************************************************************************
1345//******************************************************************************
1346void Win32PeLdrImage::AddNameExport(ULONG virtaddr, char *apiname, ULONG ordinal, BOOL fAbsoluteAddress)
1347{
1348 ULONG nsize;
1349
1350 if(nameexports == NULL) {
1351 nameExportSize= 4096;
1352 nameexports = (NameExport *)malloc(nameExportSize);
1353 curnameexport = nameexports;
1354 }
1355 nsize = (ULONG)curnameexport - (ULONG)nameexports;
1356 if(nsize + sizeof(NameExport) + strlen(apiname) > nameExportSize) {
1357 nameExportSize += 4096;
1358 char *tmp = (char *)nameexports;
1359 nameexports = (NameExport *)malloc(nameExportSize);
1360 memcpy(nameexports, tmp, nsize);
1361 curnameexport = (NameExport *)((ULONG)nameexports + nsize);
1362 free(tmp);
1363 }
1364 if(fAbsoluteAddress) {//forwarders use absolute address
1365 curnameexport->virtaddr = virtaddr;
1366 }
1367 else curnameexport->virtaddr = realBaseAddress + (virtaddr - oh.ImageBase);
1368 curnameexport->ordinal = ordinal;
1369 *(ULONG *)curnameexport->name = 0;
1370 strcpy(curnameexport->name, apiname);
1371
1372 curnameexport->nlength = strlen(apiname) + 1;
1373 if(curnameexport->nlength < sizeof(curnameexport->name))
1374 curnameexport->nlength = sizeof(curnameexport->name);
1375
1376 curnameexport = (NameExport *)((ULONG)curnameexport->name + curnameexport->nlength);
1377}
1378//******************************************************************************
1379//******************************************************************************
1380void Win32PeLdrImage::AddOrdExport(ULONG virtaddr, ULONG ordinal, BOOL fAbsoluteAddress)
1381{
1382 if(ordexports == NULL) {
1383 ordexports = (OrdExport *)malloc(nrOrdExports * sizeof(OrdExport));
1384 curordexport = ordexports;
1385 }
1386 if(fAbsoluteAddress) {//forwarders use absolute address
1387 curordexport->virtaddr = virtaddr;
1388 }
1389 else curordexport->virtaddr = realBaseAddress + (virtaddr - oh.ImageBase);
1390
1391 curordexport->ordinal = ordinal;
1392 curordexport++;
1393}
1394//******************************************************************************
1395//******************************************************************************
1396BOOL Win32PeLdrImage::AddForwarder(ULONG virtaddr, char *apiname, ULONG ordinal)
1397{
1398 char *forward = (char *)(realBaseAddress + (virtaddr - oh.ImageBase));
1399 char *forwarddll, *forwardapi;
1400 Win32DllBase *WinDll;
1401 DWORD exportaddr;
1402 int forwardord;
1403
1404 forwarddll = strdup(forward);
1405 if(forwarddll == NULL) {
1406 return FALSE;
1407 }
1408 forwardapi = strchr(forwarddll, '.');
1409 if(forwardapi == NULL) {
1410 goto fail;
1411 }
1412 *forwardapi++ = 0;
1413 if(strlen(forwarddll) == 0 || strlen(forwardapi) == 0) {
1414 goto fail;
1415 }
1416 WinDll = Win32DllBase::findModule(forwarddll);
1417 if(WinDll == NULL) {
1418 WinDll = loadDll(forwarddll);
1419 if(WinDll == NULL) {
1420 dprintf((LOG, "ERROR: couldn't find forwarder %s.%s", forwarddll, forwardapi));
1421 goto fail;
1422 }
1423 }
1424 //check if name or ordinal forwarder
1425 forwardord = 0;
1426 if(*forwardapi >= '0' && *forwardapi <= '9') {
1427 forwardord = atoi(forwardapi);
1428 }
1429 if(forwardord != 0 || (strlen(forwardapi) == 1 && *forwardapi == '0')) {
1430 exportaddr = WinDll->getApi(forwardord);
1431 }
1432 else exportaddr = WinDll->getApi(forwardapi);
1433
1434 if(apiname) {
1435 dprintf((LOG, "address 0x%x %s @%d (0x%08x) forwarder %s.%s", virtaddr - oh.ImageBase, apiname, ordinal, virtaddr, forwarddll, forwardapi));
1436 AddNameExport(exportaddr, apiname, ordinal, TRUE);
1437 }
1438 else {
1439 dprintf((LOG, "address 0x%x @%d (0x%08x) forwarder %s.%s", virtaddr - oh.ImageBase, ordinal, virtaddr, forwarddll, forwardapi));
1440 AddOrdExport(exportaddr, ordinal, TRUE);
1441 }
1442 free(forwarddll);
1443 return TRUE;
1444
1445fail:
1446 free(forwarddll);
1447 return FALSE;
1448}
1449//******************************************************************************
1450//******************************************************************************
1451Win32DllBase *Win32PeLdrImage::loadDll(char *pszCurModule)
1452{
1453 Win32DllBase *WinDll = NULL;
1454 char modname[CCHMAXPATH];
1455
1456 strcpy(modname, pszCurModule);
1457
1458 //rename dll if necessary (i.e. OLE32 -> OLE32OS2)
1459 Win32DllBase::renameDll(modname);
1460
1461 char szModName2[CCHMAXPATH];
1462 strcpy(szModName2, modname);
1463 if (!Win32ImageBase::findDll(szModName2, modname, sizeof(modname)))
1464 {
1465 dprintf((LOG, "Module %s not found!", modname));
1466 sprintf(szErrorModule, "%s", modname);
1467 errorState = 2;
1468 return NULL;
1469 }
1470
1471 if(isPEImage(modname, NULL) != ERROR_SUCCESS_W)
1472 {//LX image, so let OS/2 do all the work for us
1473 APIRET rc;
1474 char szModuleFailure[CCHMAXPATH] = "";
1475 ULONG hInstanceNewDll;
1476 Win32LxDll *lxdll;
1477
1478 char *dot = strchr(modname, '.');
1479 if(dot == NULL) {
1480 strcat(modname, DLL_EXTENSION);
1481 }
1482 rc = DosLoadModule(szModuleFailure, sizeof(szModuleFailure), modname, (HMODULE *)&hInstanceNewDll);
1483 if(rc) {
1484 dprintf((LOG, "DosLoadModule returned %X for %s", rc, szModuleFailure));
1485 sprintf(szErrorModule, "%s", szModuleFailure);
1486 errorState = rc;
1487 return NULL;
1488 }
1489 lxdll = Win32LxDll::findModuleByOS2Handle(hInstanceNewDll);
1490 if(lxdll == NULL) {//shouldn't happen!
1491 dprintf((LOG, "Just loaded the dll, but can't find it anywhere?!!?"));
1492 errorState = ERROR_INTERNAL;
1493 return NULL;
1494 }
1495 lxdll->setDllHandleOS2(hInstanceNewDll);
1496 if(lxdll->AddRef() == -1) {//-1 -> load failed (attachProcess)
1497 dprintf((LOG, "Dll %s refused to be loaded; aborting", modname));
1498 delete lxdll;
1499 errorState = ERROR_INTERNAL;
1500 return NULL;
1501 }
1502 WinDll = (Win32DllBase*)lxdll;
1503 }
1504 else {
1505 Win32PeLdrDll *pedll;
1506
1507 pedll = new Win32PeLdrDll(modname, this);
1508 if(pedll == NULL) {
1509 dprintf((LOG, "pedll: Error allocating memory" ));
1510 WinMessageBox(HWND_DESKTOP, HWND_DESKTOP, szMemErrorMsg, szErrorTitle, 0, MB_OK | MB_ERROR | MB_MOVEABLE);
1511 errorState = ERROR_INTERNAL;
1512 return NULL;
1513 }
1514 dprintf((LOG, "**********************************************************************" ));
1515 dprintf((LOG, "********************** Loading Module *********************" ));
1516 dprintf((LOG, "**********************************************************************" ));
1517 if(pedll->init(0) == FALSE) {
1518 dprintf((LOG, "Internal WinDll error ", pedll->getError() ));
1519 delete pedll;
1520 return NULL;
1521 }
1522#ifdef DEBUG
1523 pedll->AddRef(getModuleName());
1524#else
1525 pedll->AddRef();
1526#endif
1527 if(pedll->attachProcess() == FALSE) {
1528 dprintf((LOG, "attachProcess failed!" ));
1529 delete pedll;
1530 errorState = ERROR_INTERNAL;
1531 return NULL;
1532 }
1533 WinDll = (Win32DllBase*)pedll;
1534 }
1535
1536 dprintf((LOG, "**********************************************************************" ));
1537 dprintf((LOG, "********************** Finished Loading Module %s ", modname ));
1538 dprintf((LOG, "**********************************************************************" ));
1539
1540 return WinDll;
1541}
1542//******************************************************************************
1543/** All initial processing of imports is done here
1544 * Should now detect most Borland styled files including the GifCon32.exe and
1545 * loader32 from SoftIce. (Stupid Borland!!!)
1546 *
1547 * knut [Jul 22 1998 2:44am]
1548 **/
1549//******************************************************************************
1550BOOL Win32PeLdrImage::processImports(char *win32file)
1551{
1552 PIMAGE_IMPORT_DESCRIPTOR pID;
1553 IMAGE_SECTION_HEADER shID;
1554 IMAGE_SECTION_HEADER shExtra = {0};
1555 PIMAGE_OPTIONAL_HEADER pOH;
1556 int i,j, nrPages;
1557 BOOL fBorland = 0;
1558 int cModules;
1559 char *pszModules;
1560 char *pszCurModule;
1561 char *pszTmp;
1562 ULONG *pulImport;
1563 ULONG ulCurFixup;
1564 int Size;
1565 Win32DllBase *WinDll;
1566 Win32ImageBase *WinImage = NULL;
1567 Section *section;
1568
1569/* "algorithm:"
1570 * 1) get module names and store them
1571 * a) check dwRVAModuleName is within .idata seg - if not find section
1572 * 2) iterate thru functions of each module
1573 * a) check OriginalFirstThunk is not 0 and that it points to a RVA.
1574 * b) if not a) borland-styled PE-file - ARG!!!
1575 * check FirstThunk
1576 * c) check OriginalFirstThunk/FirstThunk ok RVAs and find right section
1577 * d) store ordinal/name import
1578 * 3) finished
1579 */
1580
1581 /* 1) get module names */
1582 pID = (PIMAGE_IMPORT_DESCRIPTOR)ImageDirectoryOffset(win32file, IMAGE_DIRECTORY_ENTRY_IMPORT);
1583 if (pID == NULL)
1584 return TRUE;
1585 if (!GetSectionHdrByImageDir(win32file, IMAGE_DIRECTORY_ENTRY_IMPORT, &shID))
1586 return TRUE;
1587
1588 //calc size of module list
1589 i = Size = cModules = 0;
1590 while (pID[i].Name != 0)
1591 {
1592 //test RVA inside ID-Section
1593 if (pID[i].Name >= shID.VirtualAddress && pID[i].Name < shID.VirtualAddress + max(shID.Misc.VirtualSize, shID.SizeOfRawData)) {
1594 pszTmp = (char*)(pID[i].Name + (ULONG)win32file);
1595 }
1596 else {
1597 //is the "Extra"-section already found or do we have to find it?
1598 if (pID[i].Name < shExtra.VirtualAddress || pID[i].Name >= shExtra.VirtualAddress + max(shExtra.Misc.VirtualSize, shExtra.SizeOfRawData)) {
1599 if (!GetSectionHdrByRVA(win32file, &shExtra, pID[i].Name))
1600 return FALSE;
1601 }
1602 pszTmp = (char*)(pID[i].Name + (ULONG)win32file);
1603 }
1604 Size += strlen(pszTmp) + 1;
1605 i++;
1606 cModules++;
1607 }
1608
1609 pszModules = (char*)malloc(Size);
1610 assert(pszModules != NULL);
1611 j = 0;
1612 for (i = 0; i < cModules; i++)
1613 {
1614 //test RVA inside ID-Section
1615 if (pID[i].Name >= shID.VirtualAddress && pID[i].Name < shID.VirtualAddress + max(shID.Misc.VirtualSize, shID.SizeOfRawData)) {
1616 pszTmp = (char*)(pID[i].Name + (ULONG)win32file);
1617 }
1618 else {
1619 fBorland = TRUE;
1620 //is the "Extra"-section already found or do we have to find it?
1621 if (pID[i].Name < shExtra.VirtualAddress || pID[i].Name >= shExtra.VirtualAddress + max(shExtra.Misc.VirtualSize, shExtra.SizeOfRawData))
1622 {
1623 if (GetSectionHdrByRVA(win32file, &shExtra, pID[i].Name)) {
1624 free(pszModules);
1625 return FALSE;
1626 }
1627 }
1628 pszTmp = (char*)(pID[i].Name + (ULONG)win32file);
1629 }
1630
1631 strcpy(pszModules+j, pszTmp);
1632 j += strlen(pszTmp) + 1;
1633 }
1634 if (fBorland)
1635 dprintf((LOG, "Borland-styled PE-File." ));
1636
1637 //Store modules
1638 dprintf((LOG, "%d imported Modules: ", cModules ));
1639
1640 /* 2) functions */
1641 pszCurModule = pszModules;
1642 pOH = (PIMAGE_OPTIONAL_HEADER)OPTHEADEROFF(win32file);
1643 for (i = 0; i < cModules; i++)
1644 {
1645 dprintf((LOG, "Module %s", pszCurModule ));
1646 if(pID[i].ForwarderChain) {
1647 dprintf((LOG, "ForwarderChain: %x", pID[i].ForwarderChain));
1648 }
1649 // a) check that OriginalFirstThunk not is 0 and look for Borland-styled PE
1650 if (i == 0)
1651 {
1652 //heavy borland-style test - assume array of thunks is within that style does not change
1653 if((ULONG)pID[i].u.OriginalFirstThunk == 0 ||
1654 (ULONG)pID[i].u.OriginalFirstThunk < shID.VirtualAddress ||
1655 (ULONG)pID[i].u.OriginalFirstThunk >= shID.VirtualAddress + max(shID.Misc.VirtualSize, shID.SizeOfRawData) ||
1656 (ULONG)pID[i].u.OriginalFirstThunk >= pOH->DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress &&
1657 (ULONG)pID[i].u.OriginalFirstThunk < sizeof(*pID)*cModules + pOH->DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress)
1658 {
1659 fBorland = TRUE;
1660 }
1661 }
1662 //light borland-style test
1663 if (pID[i].u.OriginalFirstThunk == 0 || fBorland) {
1664 pulImport = (ULONG*)pID[i].FirstThunk;
1665 }
1666 else pulImport = (ULONG*)pID[i].u.OriginalFirstThunk;
1667
1668 // b) check if RVA ok
1669 if (!(pulImport > 0 && (ULONG)pulImport < pOH->SizeOfImage)) {
1670 dprintf((LOG, "Invalid RVA %x", pulImport ));
1671 break;
1672 }
1673 // check section
1674 if ((ULONG)pulImport < shExtra.VirtualAddress || (ULONG)pulImport >= shExtra.VirtualAddress + max(shExtra.Misc.VirtualSize, shExtra.SizeOfRawData))
1675 {
1676 if (!GetSectionHdrByRVA(win32file, &shExtra, (ULONG)pulImport))
1677 {
1678 dprintf((LOG, "warning: could not find section for Thunk RVA %x", pulImport ));
1679 break;
1680 }
1681 }
1682
1683 //SvL: Load dll if needed
1684 dprintf((LOG, "**********************************************************************" ));
1685 dprintf((LOG, "************** Import Module %s ", pszCurModule ));
1686 dprintf((LOG, "**********************************************************************" ));
1687 WinDll = Win32DllBase::findModule(pszCurModule);
1688
1689 if(WinDll == NULL)
1690 { //not found, so load it
1691 if (WinExe != NULL && WinExe->matchModName(pszCurModule)) {
1692 WinImage = (Win32ImageBase *)WinExe;
1693 }
1694 else {
1695 WinDll = loadDll(pszCurModule);
1696 if(WinDll == NULL) {
1697 return FALSE;
1698 }
1699 }
1700 }
1701 else {
1702 WinDll->AddRef();
1703 dprintf((LOG, "Already found ", pszCurModule));
1704 }
1705 if(WinDll != NULL) {
1706 //add the dll we just loaded to dependency list for this image
1707 addDependency(WinDll);
1708
1709 //Make sure the dependency list is correct (already done
1710 //in the ctor of Win32DllBase, but for LX dlls the parent is
1711 //then set to NULL; so change it here again
1712 WinDll->setUnloadOrder(this);
1713 WinImage = (Win32ImageBase *)WinDll;
1714 }
1715 else
1716 if(WinImage == NULL) {
1717 dprintf((LOG, "Unable to load dll %s", pszCurModule ));
1718 return FALSE;
1719 }
1720
1721 pulImport = (PULONG)((ULONG)pulImport + (ULONG)win32file);
1722 j = 0;
1723 ulCurFixup = (ULONG)pID[i].FirstThunk + (ULONG)win32file;
1724
1725 section = findSectionByOS2Addr(ulCurFixup);
1726 if(section == NULL) {
1727 dprintf((LOG, "Unable to find section for %x", ulCurFixup ));
1728 return FALSE;
1729 }
1730 //SvL: Read page from disk
1731 commitPage(ulCurFixup & ~0xfff, FALSE, SINGLE_PAGE);
1732 //SvL: Enable write access
1733 DosSetMem((PVOID)(ulCurFixup & ~0xfff), PAGE_SIZE, PAG_READ|PAG_WRITE);
1734 nrPages = 1;
1735
1736 while (pulImport[j] != 0) {
1737 if (pulImport[j] & IMAGE_ORDINAL_FLAG) { //ordinal
1738 dprintf((LOG, "0x%08x Imported function %s @%d", ulCurFixup , pszCurModule, (pulImport[j] & ~IMAGE_ORDINAL_FLAG) ));
1739 StoreImportByOrd(WinImage, pulImport[j] & ~IMAGE_ORDINAL_FLAG, ulCurFixup);
1740 }
1741 else { //name
1742 //check
1743 if (pulImport[j] < shExtra.VirtualAddress || pulImport[j] >= shExtra.VirtualAddress + max(shExtra.Misc.VirtualSize, shExtra.SizeOfRawData)) {
1744 if (!GetSectionHdrByRVA(win32file, &shExtra, pulImport[j]))
1745 {
1746 dprintf((LOG, "warning: could not find section for Import Name RVA ", pulImport[j] ));
1747 break;
1748 }
1749 }
1750 //KSO - Aug 6 1998 1:15am:this eases comparing...
1751 char *pszFunctionName = (char*)(pulImport[j] + (ULONG)win32file + 2);
1752 dprintf((LOG, "0x%08x Imported function %s (0x%08x)", ulCurFixup, pszFunctionName, WinImage->getApi(pszFunctionName)));
1753 StoreImportByName(WinImage, pszFunctionName, ulCurFixup);
1754 }
1755 ulCurFixup += sizeof(IMAGE_THUNK_DATA);
1756 j++;
1757 if((ulCurFixup & 0xfff) == 0) {
1758 commitPage(ulCurFixup & ~0xfff, FALSE, SINGLE_PAGE);
1759 DosSetMem((PVOID)(ulCurFixup & ~0xfff), PAGE_SIZE, PAG_READ|PAG_WRITE);
1760 nrPages++;
1761 }
1762 }
1763 //SvL: And restore original protection flags
1764 ulCurFixup = (ULONG)pID[i].FirstThunk + pOH->ImageBase;
1765 DosSetMem((PVOID)(ulCurFixup & ~0xfff), PAGE_SIZE*nrPages, section->pageflags);
1766
1767 dprintf((LOG, "**********************************************************************" ));
1768 dprintf((LOG, "************** End Import Module %s ", pszCurModule ));
1769 dprintf((LOG, "**********************************************************************" ));
1770
1771 pszCurModule += strlen(pszCurModule) + 1;
1772 }//for (i = 0; i < cModules; i++)
1773
1774 free(pszModules);
1775 return TRUE;
1776}
1777//******************************************************************************
1778//******************************************************************************
1779BOOL Win32PeLdrImage::insideModule(ULONG address)
1780{
1781 if((address >= realBaseAddress) && (address < realBaseAddress + imageSize)) {
1782 return TRUE;
1783 }
1784 return FALSE;
1785}
1786//******************************************************************************
1787//******************************************************************************
1788BOOL Win32PeLdrImage::insideModuleCode(ULONG address)
1789{
1790 Section *sect;
1791
1792 sect = findSectionByOS2Addr(address);
1793 if(sect && (sect->pageflags & PAG_EXECUTE)) {
1794 return TRUE;
1795 }
1796 return FALSE;
1797}
1798//******************************************************************************
1799//******************************************************************************
1800ULONG Win32PeLdrImage::getImageSize()
1801{
1802 return imageSize;
1803}
1804//******************************************************************************
1805//******************************************************************************
1806ULONG Win32PeLdrImage::getApi(char *name)
1807{
1808 ULONG apiaddr, i, apilen;
1809 char *apiname;
1810 char tmp[4];
1811 NameExport *curexport;
1812 ULONG ulAPIOrdinal; /* api requested by ordinal */
1813
1814 apilen = strlen(name) + 1;
1815 if(apilen < 4)
1816 {
1817 *(ULONG *)tmp = 0;
1818 strcpy(tmp, name);
1819 apiname = tmp;
1820 apilen = 4;
1821 }
1822 else apiname = name;
1823
1824 curexport = nameexports;
1825 for(i=0; i<nrNameExports; i++)
1826 {
1827 if(apilen == curexport->nlength &&
1828 *(ULONG *)curexport->name == *(ULONG *)apiname)
1829 {
1830 if(strcmp(curexport->name, apiname) == 0)
1831 return(curexport->virtaddr);
1832 }
1833 curexport = (NameExport *)((ULONG)curexport->name + curexport->nlength);
1834 }
1835 return(0);
1836}
1837//******************************************************************************
1838//******************************************************************************
1839ULONG Win32PeLdrImage::getApi(int ordinal)
1840{
1841 ULONG apiaddr, i;
1842 OrdExport *curexport;
1843 NameExport *nexport;
1844
1845 curexport = ordexports;
1846 for(i=0;i<nrOrdExports;i++) {
1847 if(curexport->ordinal == ordinal)
1848 return(curexport->virtaddr);
1849 curexport++;
1850 }
1851 //Name exports also contain an ordinal, so check this
1852 nexport = nameexports;
1853 for(i=0;i<nrNameExports;i++) {
1854 if(nexport->ordinal == ordinal)
1855 return(nexport->virtaddr);
1856
1857 nexport = (NameExport *)((ULONG)nexport->name + nexport->nlength);
1858 }
1859 return(0);
1860}
1861//******************************************************************************
1862//Returns required OS version for this image
1863//******************************************************************************
1864ULONG Win32PeLdrImage::getVersion()
1865{
1866 return (oh.MajorOperatingSystemVersion << 16) | oh.MinorOperatingSystemVersion;
1867}
1868//******************************************************************************
1869//******************************************************************************
1870ULONG MissingApi()
1871{
1872 static BOOL fIgnore = FALSE;
1873 int r;
1874
1875 dprintf((LOG, "Missing api called!\n"));
1876 if(fIgnore)
1877 return(0);
1878
1879 do {
1880 r = WinMessageBox(HWND_DESKTOP, NULLHANDLE, "The application has called a non-existing api\n",
1881 "Internal Odin Error", 0, MB_ABORTRETRYIGNORE | MB_ICONEXCLAMATION | MB_MOVEABLE);
1882 }
1883 while(r == MBID_RETRY); //giggle
1884
1885 if( r != MBID_IGNORE )
1886 ExitProcess(987);
1887
1888 fIgnore = TRUE;
1889 return(0);
1890}
1891/******************************************************************************/
1892/******************************************************************************/
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