Context Navigation

source: trunk/src/helpers/exeh.c@ 252

Visit:

Last change on this file since 252 was 242, checked in by umoeller, 23 years ago
First attempt at new container contol.
Property svn:eol-style set to `CRLF` Property svn:keywords set to `Author Date Id Revision`
File size: 126.0 KB

Line
1
2	/*
3	*@@sourcefile exeh.c:
4	* contains code to load and parse executable headers
5	* and resources. See exehOpen for details.
6	*
7	* This file is new with V0.9.16 (2002-01-05) [umoeller]
8	* and contains code formerly in dosh2.c.
9	*
10	* Function prefixes:
11	* -- exe* executable helper functions.
12	*
13	* Note: Version numbering in this file relates to XWorkplace version
14	* numbering.
15	*
16	*@@header "helpers\exeh.h"
17	*/
18
19	/*
20	* This file Copyright (C) 2000-2002 Ulrich Mller,
21	* Martin Lafaix.
22	* This file is part of the "XWorkplace helpers" source package.
23	* This is free software; you can redistribute it and/or modify
24	* it under the terms of the GNU General Public License as published
25	* by the Free Software Foundation, in version 2 as it comes in the
26	* "COPYING" file of the XWorkplace main distribution.
27	* This program is distributed in the hope that it will be useful,
28	* but WITHOUT ANY WARRANTY; without even the implied warranty of
29	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30	* GNU General Public License for more details.
31	*/
32
33	#define OS2EMX_PLAIN_CHAR
34	// this is needed for "os2emx.h"; if this is defined,
35	// emx will define PSZ as _signed_ char, otherwise
36	// as unsigned char
37
38	#define INCL_DOSMODULEMGR
39	#define INCL_DOSPROCESS
40	#define INCL_DOSEXCEPTIONS
41	#define INCL_DOSSESMGR
42	#define INCL_DOSQUEUES
43	#define INCL_DOSMISC
44	#define INCL_DOSDEVICES
45	#define INCL_DOSDEVIOCTL
46	#define INCL_DOSERRORS
47
48	#define INCL_WINPROGRAMLIST
49	#include <os2.h>
50
51	// #include <stdlib.h>
52	#include <string.h>
53	#include <stdio.h>
54	#include <setjmp.h>
55
56	#include "setup.h" // code generation and debugging options
57
58	#include "helpers\dosh.h"
59	#include "helpers\ensure.h"
60	#include "helpers\except.h"
61	#include "helpers\exeh.h"
62	#include "helpers\standards.h"
63	#include "helpers\stringh.h"
64
65	#pragma hdrstop
66
67	/*
68	*@@category: Helpers\Control program helpers\Executable info
69	* these functions can retrieve BLDLEVEL information,
70	* imported modules information, exported functions information,
71	* and resources information from any executable module. See
72	* exehOpen.
73	*/
74
75	/********************************************************************
76	*
77	* Executable functions
78	*
79	********************************************************************/
80
81	/*
82	*@@ exehOpen:
83	* this opens the specified executable file
84	* (which can be an .EXE, .COM, .DLL, or
85	* driver file) for use with the other
86	* exeh* functions.
87	*
88	* Basically this does a plain DosOpen on the
89	* executable file and reads in the various
90	* executable headers manually. Since DosLoadModule
91	* et al is never used, the OS/2 executable loader
92	* is completely circumvented. (Side note:
93	* DosLoadModule cannot be used on EXE files in
94	* the first place.)
95	*
96	* To be more precise, this uses doshOpen internally
97	* and can thus profit from the caching that is
98	* implemented there (V0.9.16).
99	*
100	* If no error occurs, NO_ERROR is returned
101	* and a pointer to a new EXECUTABLE structure
102	* is stored in *ppExec. Consider this pointer a
103	* handle and pass it to exehClose to clean up.
104	*
105	* If NO_ERROR is returned, all the fields through
106	* ulOS are set in EXECUTABLE. The psz* fields
107	* which follow afterwards require an additional
108	* call to exehQueryBldLevel.
109	*
110	* NOTE: If NO_ERROR is returned, the executable
111	* file is kept open by this function. It will
112	* only be closed when you call exehClose.
113	*
114	* If errors occur, this function returns the
115	* following error codes:
116	*
117	* -- ERROR_NOT_ENOUGH_MEMORY: malloc() failed.
118	*
119	* -- ERROR_INVALID_EXE_SIGNATURE (191): header is
120	* neither plain DOS, nor NE, nor LX, nor PE.
121	* The given file probably isn't even an
122	* executable.
123	*
124	* -- ERROR_BAD_EXE_FORMAT (193): header was
125	* recognized, but the header data was
126	* not understood. Also this might be
127	* returned for .COM files which are
128	* not recognized.
129	*
130	* -- ERROR_INVALID_PARAMETER: ppExec is NULL.
131	*
132	* plus those of doshOpen and doshReadAt.
133	*
134	* The following executable types are supported
135	* (see EXECUTABLE for details):
136	*
137	* -- Plain DOS 3.x executable without new header.
138	*
139	* -- New Executable (NE), used by Win16 and
140	* 16-bit OS/2 and still many of today's drivers.
141	*
142	* -- Linear Executable (LX), OS/2 2.x and above.
143	*
144	* -- Portable Executable (PE), used by Win32.
145	*
146	* -- For files with the .COM, .BAT, or .CMD
147	* extensions, this will _not_ open the
148	* executable file, but set flags in EXECUTABLE
149	* only. Most importantly, EXECUTABLE.pDosExeHeader
150	* will be NULL.
151	*
152	* V0.9.12 adds support for NOSTUB executables,
153	* which are new-style executables (NE or LX)
154	* without a leading DOS header. JFS.IFS uses that
155	* format, for example. The executable then starts
156	* directly with the NE or LX header. I am not sure
157	* whether PE supports such beasts as well... if
158	* so, it should be supported too.
159	*
160	* Note that not all of the other exeh* functions
161	* support all of the executable types. See the
162	* respective function descriptions for remarks.
163	*
164	* @@todo:
165	*
166	* win95 \WINDOWS\extract.exe is NE with a non-standard format
167	* win16 \WINDOWS\EXPAND.EXE
168	* win16 \WINDOWS\MSD.EXE"
169	*
170	*@@added V0.9.0 [umoeller]
171	*@@changed V0.9.1 (2000-02-13) [umoeller]: fixed 32-bits flag
172	*@@changed V0.9.7 (2000-12-20) [lafaix]: fixed ulNewHeaderOfs
173	*@@changed V0.9.10 (2001-04-08) [lafaix]: added PE support
174	*@@changed V0.9.10 (2001-04-08) [umoeller]: now setting ppExec only if NO_ERROR is returned
175	*@@changed V0.9.12 (2001-05-03) [umoeller]: added support for NOSTUB newstyle executables
176	*@@changed V0.9.16 (2001-12-08) [umoeller]: now using OPEN_SHARE_DENYWRITE
177	*@@changed V0.9.16 (2001-12-08) [umoeller]: fLibrary was never set, works for LX, NE, and PE now
178	*@@changed V0.9.16 (2001-12-08) [umoeller]: speed optimizations, changed some return codes
179	*@@changed V0.9.16 (2002-01-04) [umoeller]: added fixes for COM, BAT, CMD extensions
180	*@@changed V1.0.0 (2002-08-18) [umoeller]: this was completely broken for files without extensions (os2krnl)
181	*/
182
183	APIRET exehOpen(const char* pcszExecutable,
184	PEXECUTABLE* ppExec)
185	{
186	APIRET arc = NO_ERROR;
187
188	PEXECUTABLE pExec = NULL;
189
190	PXFILE pFile = NULL;
191	ULONG cbFile = 0;
192	PCSZ pExt;
193	BOOL fOpenFile = FALSE;
194	BOOL fLoadNewHeader = FALSE;
195	ULONG ulNewHeaderOfs = 0; // V0.9.12 (2001-05-03) [umoeller]
196
197	if (!ppExec)
198	return ERROR_INVALID_PARAMETER;
199
200	if (!(pExec = (PEXECUTABLE)malloc(sizeof(EXECUTABLE))))
201	return ERROR_NOT_ENOUGH_MEMORY;
202
203	memset(pExec, 0, sizeof(EXECUTABLE));
204
205	// check some of the default extensions
206	// V0.9.16 (2002-01-04) [umoeller]
207	if (!(pExt = doshGetExtension(pcszExecutable)))
208	{
209	// has no extension: then open file!
210	// fixed V1.0.0 (2002-08-18) [umoeller]
211	fOpenFile = TRUE;
212	}
213	else
214	{
215	// has extension:
216	if (!stricmp(pExt, "COM"))
217	{
218	// I am not willing to find out more about the
219	// .COM executable format, so for this one case,
220	// let OS/2 determine what we have here
221	// (otherwise we do _not_ use DosQueryAppType
222	// because it's quite an expensive call)
223	ULONG ulDosAppType = 0;
224	if (!(arc = DosQueryAppType((PSZ)pcszExecutable, &ulDosAppType)))
225	{
226	if (ulDosAppType & FAPPTYP_DOS) // 0x20
227	pExec->ulOS = EXEOS_DOS3;
228	else
229	{
230	ULONG fl = ulDosAppType & FAPPTYP_WINDOWAPI; // 0x03
231	if ( (fl == FAPPTYP_WINDOWCOMPAT) // 0x02)
232	\|\| (fl == FAPPTYP_NOTWINDOWCOMPAT) // 0x01)
233	)
234	pExec->ulOS = EXEOS_OS2;
235	else
236	arc = ERROR_BAD_EXE_FORMAT;
237	}
238
239	pExec->ulExeFormat = EXEFORMAT_COM;
240	}
241	}
242	else if (!stricmp(pExt, "BAT"))
243	{
244	pExec->ulOS = EXEOS_DOS3;
245	pExec->ulExeFormat = EXEFORMAT_TEXT_BATCH;
246	}
247	else if (!stricmp(pExt, "CMD"))
248	{
249	pExec->ulOS = EXEOS_OS2;
250	pExec->ulExeFormat = EXEFORMAT_TEXT_CMD;
251	}
252	else
253	fOpenFile = TRUE;
254	}
255
256	if ( (fOpenFile) // none of the above
257	&& (!(arc = doshOpen((PSZ)pcszExecutable,
258	XOPEN_READ_EXISTING,
259	&cbFile,
260	&pFile)))
261	)
262	{
263	// file opened successfully:
264	pExec->pFile = pFile;
265	pExec->cbDosExeHeader = sizeof(DOSEXEHEADER);
266
267	// read old DOS EXE header
268	if (!(pExec->pDosExeHeader = (PDOSEXEHEADER)malloc(sizeof(DOSEXEHEADER))))
269	arc = ERROR_NOT_ENOUGH_MEMORY;
270	else if (!(arc = doshReadAt(pFile,
271	0,
272	&pExec->cbDosExeHeader, // in/out
273	(PBYTE)pExec->pDosExeHeader,
274	DRFL_FAILIFLESS)))
275	{
276	// now check if we really have a DOS header
277	if (pExec->pDosExeHeader->usDosExeID != 0x5a4d)
278	{
279	// arc = ERROR_INVALID_EXE_SIGNATURE;
280
281	// V0.9.12 (2001-05-03) [umoeller]
282	// try loading new header directly; there are
283	// drivers which were built with NOSTUB, and
284	// the exe image starts out with the NE or LX
285	// image directly (try JFS.IFS)
286	fLoadNewHeader = TRUE;
287	// ulNewHeaderOfs is 0 now
288
289	// remove the DOS header info, since we have none
290	// V0.9.12 (2001-05-03) [umoeller]
291	FREE(pExec->pDosExeHeader);
292	pExec->cbDosExeHeader = 0;
293	}
294	else
295	{
296	// we have a DOS header:
297	if (pExec->pDosExeHeader->usRelocTableOfs < 0x40)
298	{
299	// neither LX nor PE nor NE:
300	pExec->ulOS = EXEOS_DOS3;
301	pExec->ulExeFormat = EXEFORMAT_OLDDOS;
302	}
303	else
304	{
305	// we have a new header offset:
306	fLoadNewHeader = TRUE;
307	ulNewHeaderOfs = pExec->pDosExeHeader->ulNewHeaderOfs;
308	}
309	}
310	}
311	}
312
313	if (fLoadNewHeader)
314	{
315	// either LX or PE or NE:
316	// read in new header...
317	// ulNewHeaderOfs is now either 0 (if no DOS header
318	// was found) or pDosExeHeader->ulNewHeaderOfs
319	// V0.9.12 (2001-05-03) [umoeller]
320
321	// read in the first two bytes to find out
322	// what extended header type we have; note,
323	// PE uses four bytes here
324	CHAR achNewHeaderType[4] = "???";
325	ULONG cbRead = 4;
326
327	if (!(arc = doshReadAt(pFile,
328	ulNewHeaderOfs,
329	&cbRead,
330	achNewHeaderType,
331	DRFL_FAILIFLESS)))
332	{
333	PBYTE pbCheckOS = NULL;
334
335	if (!memcmp(achNewHeaderType, "NE", 2))
336	{
337	// New Executable:
338	pExec->ulExeFormat = EXEFORMAT_NE;
339	cbRead = sizeof(NEHEADER);
340
341	// go read in the complete header then
342	// (doshReadAt has this in the cache)
343	if (!(pExec->pNEHeader = (PNEHEADER)malloc(cbRead)))
344	arc = ERROR_NOT_ENOUGH_MEMORY;
345	else if (!(arc = doshReadAt(pFile,
346	ulNewHeaderOfs,
347	&cbRead,
348	(PBYTE)pExec->pNEHeader,
349	0)))
350	{
351	if (cbRead < sizeof(NEHEADER))
352	arc = ERROR_BAD_EXE_FORMAT;
353	else
354	{
355	pExec->cbNEHeader = cbRead;
356	pbCheckOS = &pExec->pNEHeader->bTargetOS;
357	// set library flag V0.9.16 (2001-12-08) [umoeller]
358	if (pExec->pNEHeader->usFlags & 0x8000)
359	// library:
360	pExec->fLibrary = TRUE;
361	}
362	}
363	}
364	else if ( (!memcmp(achNewHeaderType, "LX", 2))
365	\|\| (!memcmp(achNewHeaderType, "LE", 2))
366	// this is used by SMARTDRV.EXE
367	)
368	{
369	// OS/2 Linear Executable:
370	pExec->ulExeFormat = EXEFORMAT_LX;
371	cbRead = sizeof(LXHEADER);
372
373	// go read in the complete header then
374	// (doshReadAt has this in the cache)
375	if (!(pExec->pLXHeader = (PLXHEADER)malloc(cbRead)))
376	arc = ERROR_NOT_ENOUGH_MEMORY;
377	else if (!(arc = doshReadAt(pFile,
378	ulNewHeaderOfs,
379	&cbRead,
380	(PBYTE)pExec->pLXHeader,
381	0)))
382	{
383	if (cbRead < sizeof(LXHEADER))
384	arc = ERROR_BAD_EXE_FORMAT;
385	else
386	{
387	pExec->cbLXHeader = cbRead;
388	pbCheckOS = (PBYTE)(&pExec->pLXHeader->usTargetOS);
389	// set library flag V0.9.16 (2001-12-08) [umoeller]
390	if (pExec->pLXHeader->ulFlags & 0x8000)
391	// library:
392	pExec->fLibrary = TRUE;
393	}
394	}
395	}
396	else if (!memcmp(achNewHeaderType, "PE\0\0", 4))
397	{
398	pExec->ulExeFormat = EXEFORMAT_PE;
399
400	// PE has a standard header of 24 bytes
401	// plus an extended header, so check
402	// what we've got
403	if (!(pExec->pPEHeader = (PPEHEADER)malloc(sizeof(PEHEADER))))
404	arc = ERROR_NOT_ENOUGH_MEMORY;
405	else
406	{
407	ULONG ulOfs = ulNewHeaderOfs + 4;
408	PPEHEADER pPEHeader = pExec->pPEHeader;
409
410	// null the entire header
411	memset(pExec->pPEHeader,
412	0,
413	sizeof(PEHEADER));
414
415	// copy sig
416	pPEHeader->ulSignature = *((PULONG)&achNewHeaderType);
417
418	// read standard header
419	cbRead = sizeof(IMAGE_FILE_HEADER);
420	if (!(arc = doshReadAt(pFile,
421	ulOfs,
422	&cbRead,
423	(PBYTE)&pPEHeader->FileHeader,
424	0)))
425	{
426	if (cbRead < sizeof(IMAGE_FILE_HEADER))
427	// only if we don't even have the
428	// standard header, return an error
429	arc = ERROR_BAD_EXE_FORMAT;
430	else
431	{
432	pExec->f32Bits = TRUE;
433	pExec->cbPEHeader = 4 + sizeof(PEHEADER); // for now
434
435	if (pPEHeader->FileHeader.fsCharacteristics & IMAGE_FILE_DLL)
436	pExec->fLibrary = TRUE;
437
438	// try extended header
439	ulOfs += sizeof(IMAGE_FILE_HEADER);
440	if ( (cbRead = pPEHeader->FileHeader.usSizeOfOptionalHeader)
441	&& (cbRead <= sizeof(IMAGE_OPTIONAL_HEADER))
442	)
443	{
444	if (!(arc = doshReadAt(pFile,
445	ulOfs,
446	&cbRead,
447	(PBYTE)&pPEHeader->OptionalHeader,
448	0)))
449	{
450	if (cbRead != sizeof(IMAGE_OPTIONAL_HEADER))
451	arc = ERROR_BAD_EXE_FORMAT;
452	else switch (pPEHeader->OptionalHeader.usSubsystem)
453	{
454	// case IMAGE_SUBSYSTEM_UNKNOWN: // 0
455	// case IMAGE_SUBSYSTEM_NATIVE: // 1
456	// case IMAGE_SUBSYSTEM_OS2_CUI: // 5
457	// case IMAGE_SUBSYSTEM_POSIX_CUI: // 7
458	// for these we shouldn't set win32
459
460	case IMAGE_SUBSYSTEM_WINDOWS_GUI: // 2 // Windows GUI subsystem
461	pExec->ulOS = EXEOS_WIN32_GUI;
462	break;
463
464	case IMAGE_SUBSYSTEM_WINDOWS_CUI: // 3 // Windows character subsystem
465	pExec->ulOS = EXEOS_WIN32_CLI;
466	break;
467	}
468
469	pExec->cbPEHeader = sizeof(PEHEADER);
470	}
471	}
472	} // end else if (cbRead < sizeof(IMAGE_FILE_HEADER))
473	} // end if (!(arc = doshReadAt(pFile,
474	} // end else if (!(pExec->pPEHeader = (PPEHEADER)malloc(sizeof(PEHEADER))))
475	} // end else if (!memcmp(achNewHeaderType, "PE\0\0", 4))
476	else
477	// strange type:
478	arc = ERROR_INVALID_EXE_SIGNATURE;
479
480	if ((!arc) && (pbCheckOS))
481	{
482	// BYTE to check for operating system
483	// (NE and LX):
484	switch (*pbCheckOS)
485	{
486	case NEOS_OS2:
487	pExec->ulOS = EXEOS_OS2;
488	if (pExec->ulExeFormat == EXEFORMAT_LX)
489	pExec->f32Bits = TRUE;
490	break;
491
492	case NEOS_WIN16:
493	pExec->ulOS = EXEOS_WIN16;
494	break;
495
496	case NEOS_DOS4:
497	pExec->ulOS = EXEOS_DOS4;
498	break;
499
500	case NEOS_WIN386:
501	pExec->ulOS = EXEOS_WIN386;
502	pExec->f32Bits = TRUE;
503	break;
504	}
505	}
506	} // end if (!(arc = doshReadAt(hFile,
507	} // end if (fLoadNewHeader)
508
509	if (arc)
510	// error: clean up
511	exehClose(&pExec);
512	else
513	*ppExec = pExec;
514
515	return arc;
516	}
517
518	/*
519	*@@ ParseBldLevel:
520	* called from exehQueryBldLevel to parse the BLDLEVEL string.
521	*
522	* On entry, caller has copied the string into pExec->pszDescription.
523	* The string is null-terminated.
524	*
525	* The BLDLEVEL string comes in at least two basic flavors.
526	*
527	* -- The standard format is:
528	*
529	+ @#VENDOR:VERSION#@DESCRIPTION
530	*
531	* DESCRIPTION can have leading spaces, but
532	* need to have them.
533	*
534	* -- However, there is an extended version in that the DESCRIPTION field
535	* is split up even more.
536	*
537	* I have seen two subformats for this.
538	*
539	* -- DANIS506.ADD and some IBM programs have a marker that seems
540	* to be that the description starts out with "##1##".
541	*
542	+ ##1## DATETIME BUILDMACHINE:ASD:LANG:CTRY:REVISION:UNKNOWN:FIXPAK@@DESCRIPTION
543	*
544	* The problem is that the DATETIME field comes
545	* in several flavors. IBM uses things like
546	*
547	+ "Thu Nov 30 15:30:37 2000 BWBLD228"
548	*
549	* while DANIS506.ADD has
550	*
551	+ "15.12.2000 18:22:57 Nachtigall"
552	*
553	* Looks like the date/time string is standardized to have 24 characters then.
554	*
555	* -- IBM TCP/IP executables (try INETD.EXE) have something yet different on.
556	* We now try to parse that format as well, even though bldlevel.exe can't
557	* handle it. (Isn't that utility from IBM too?)
558	*
559	* Here's what I get for inetd.exe:
560	*
561	+ ##built 09:16:27 Mon Sep 17 2001 -- On AURORA43;0.1@@ TCP/IP for OS/2: INETD
562	*
563	*@@added V0.9.12 (2001-05-18) [umoeller]
564	*@@changed V0.9.12 (2001-05-19) [umoeller]: added extended BLDLEVEL support
565	*@@changed V1.0.0 (2002-08-18) [umoeller]: added support for IBM TCP/IP format
566	*@@changed V1.0.0 (2002-08-18) [umoeller]: fixed DANIS506 format when an extended field had only one character
567	*/
568
569	STATIC VOID ParseBldLevel(PEXECUTABLE pExec)
570	{
571	PCSZ pStartOfVendor,
572	pStartOfInfo,
573	pEndOfVendor;
574
575	// @#VENDOR:VERSION#@ DESCRIPTION
576	if ( (pStartOfVendor = strstr(pExec->pszDescription, "@#"))
577	&& (pStartOfInfo = strstr(pStartOfVendor + 2, "#@"))
578	&& (pEndOfVendor = strchr(pStartOfVendor + 2, ':'))
579	)
580	{
581	pExec->pszVendor = strhSubstr(pStartOfVendor + 2,
582	pEndOfVendor);
583	pExec->pszVersion = strhSubstr(pEndOfVendor + 1,
584	pStartOfInfo);
585	// skip "@#" in DESCRIPTION string
586	pStartOfInfo += 2;
587
588	// now check if we have extended DESCRIPTION V0.9.12 (2001-05-19) [umoeller]
589	if (strlen(pStartOfInfo) > 6)
590	{
591	if (!memcmp(pStartOfInfo, "##1##", 5))
592	{
593	// DANIS506.ADD format:
594	// "##1## 2.7.2002 19:32:34 Nachtigall::::6::@@..."
595
596	// parse that beast
597	PCSZ p = pStartOfInfo + 5;
598
599	// get build date/time
600	if (strlen(p) > 24)
601	{
602	// skip leading and trailing spaces
603	// V1.0.0 (2002-08-18) [umoeller]
604	PCSZ pStartOfDT = p,
605	pEndOfDT = p + 24;
606	// date/time seems to be fixed 24 chars in length
607
608	while (*pStartOfDT == ' ')
609	++pStartOfDT;
610
611	while ( (*pEndOfDT == ' ')
612	&& (pEndOfDT > pStartOfDT)
613	)
614	--pEndOfDT;
615
616	pExec->pszBuildDateTime = strhSubstr(pStartOfDT, pEndOfDT + 1);
617
618	/* memcpy(pExec->pszBuildDateTime,
619	p,
620	24);
621	pExec->pszBuildDateTime[24] = '\0';
622	*/
623
624	// date/time seems to be fixed 24 chars in length
625	p += 24;
626
627	// now we're at the colon-separated
628	// strings, first of which is the build machine;
629	// skip leading spaces
630	while (*p == ' ')
631	p++;
632
633	if (*p)
634	{
635	char **papsz[] =
636	{
637	&pExec->pszBuildMachine,
638	&pExec->pszASD,
639	&pExec->pszLanguage,
640	&pExec->pszCountry,
641	&pExec->pszRevision,
642	&pExec->pszUnknown,
643	&pExec->pszFixpak
644	};
645	ULONG ul;
646
647	for (ul = 0;
648	ul < sizeof(papsz) / sizeof(papsz[0]);
649	ul++)
650	{
651	BOOL fStop = FALSE;
652	PCSZ pNextColon = strchr(p, ':'),
653	pDoubleAt = strstr(p, "@@");
654	if (!pNextColon)
655	{
656	// last item:
657	if (pDoubleAt)
658	pNextColon = pDoubleAt;
659	else
660	pNextColon = p + strlen(p);
661
662	fStop = TRUE;
663	}
664
665	if ( (fStop)
666	\|\| ( (pNextColon)
667	&& ( (!pDoubleAt)
668	\|\| (pNextColon < pDoubleAt)
669	)
670	)
671	)
672	{
673	// if (pNextColon > p + 1)
674	// fixed V1.0.0 (2002-08-18) [umoeller]
675	// this failed on fields like "revision"
676	// which only had one character
677	if (pNextColon > p)
678	*(papsz[ul]) = strhSubstr(p, pNextColon);
679	}
680	else
681	break;
682
683	if (fStop)
684	break;
685
686	p = pNextColon + 1;
687	}
688	}
689	}
690
691	if (pStartOfInfo = strstr(p,
692	"@@"))
693	pStartOfInfo += 2;
694	} // end if (!memcmp(pStartOfInfo, "##1##", 5))
695	else if (!memcmp(pStartOfInfo, "##built", 7))
696	{
697	// IBM TCP/IP format:
698	// V1.0.0 (2002-08-18) [umoeller]
699
700	// ##built 09:16:27 Mon Sep 17 2001 -- On AURORA43;0.1@@ TCP/IP for OS/2: INETD
701
702	PCSZ p = pStartOfInfo + 7,
703	p2,
704	p3;
705
706	if (p3 = strchr(p, ';'))
707	{
708	while (*p == ' ')
709	++p;
710
711	// ##built 09:16:27 Mon Sep 17 2001 -- On AURORA43;0.1@@ TCP/IP for OS/2: INETD
712	// ^ p ^ p3
713	// ^ p2
714
715	if ( (p2 = strstr(p, " -- On "))
716	&& (p2 < p3)
717	)
718	{
719	pExec->pszBuildMachine = strhSubstr(p2 + 7, p3);
720	pExec->pszBuildDateTime = strhSubstr(p, p2);
721	}
722	else
723	pExec->pszBuildDateTime = strhSubstr(p, p3);
724
725	p = p3 + 1;
726	}
727
728	if (pStartOfInfo = strstr(p,
729	"@@"))
730	{
731	if (pStartOfInfo > p3)
732	{
733	// p3 points to this "0.1" string; I assume this is
734	// a "revision.fixpak" format since inetver reports
735	// four digits with this revision
736	PCSZ p4;
737	if ( (p4 = strchr(p3, '.'))
738	&& (p4 < pStartOfInfo)
739	)
740	{
741	pExec->pszRevision = strhSubstr(p3 + 1, p4);
742	pExec->pszFixpak = strhSubstr(p4 + 1, pStartOfInfo);
743	}
744	else
745	pExec->pszRevision = strhSubstr(p3 + 1, pStartOfInfo);
746	}
747
748	pStartOfInfo += 2;
749	}
750	}
751	}
752
753	// -- if we had no extended DESCRIPTION,
754	// pStartOfInfo points to regular description now
755	// -- if we parse the extended DESCRIPTION above,
756	// pStartOfInfo points to after @@ now
757	// -- if we had an error, pStartOfInfo is NULL
758	if (pStartOfInfo)
759	{
760	// add the regular DESCRIPTION then
761	// skip leading spaces in info string
762	while (*pStartOfInfo == ' ')
763	++pStartOfInfo;
764
765	if (*pStartOfInfo) // V0.9.9 (2001-04-04) [umoeller]
766	// and copy until end of string
767	pExec->pszInfo = strdup(pStartOfInfo);
768	}
769	}
770	}
771
772	/*
773	*@@ exehQueryBldLevel:
774	* this retrieves buildlevel information for an
775	* LX or NE executable previously opened with
776	* exehOpen.
777	*
778	* BuildLevel information must be contained in the
779	* DESCRIPTION field of an executable's module
780	* definition (.DEF) file. In order to be readable
781	* by BLDLEVEL.EXE (which ships with OS/2), this
782	* string must have the following format:
783	*
784	+ Description '@#AUTHOR:VERSION#@ DESCRIPTION'
785	*
786	* Example:
787	*
788	+ Description '@#Ulrich Mller:0.9.0#@ XWorkplace Sound Support Module'
789	*
790	* The "Description" entry always ends up as the
791	* very first entry in the non-resident name table
792	* in LX and NE executables. So this is what we retrieve
793	* here.
794	*
795	* If the first entry in that table exists, NO_ERROR is
796	* returned and at least the pszDescription field in
797	* EXECUTABLE is set to that information.
798	*
799	* If that string is in IBM BLDLEVEL format, the string
800	* is automatically parsed, and the pszVendor, pszVersion,
801	* and pszInfo fields are also set. In the above examples,
802	* this would return the following information:
803	*
804	+ pszVendor = "Ulrich Mller"
805	+ pszVersion = "0.9.0"
806	+ pszInfo = "XWorkplace Sound Support Module"
807	*
808	* See ParseBldLevel for extended formats.
809	*
810	* If that string is not in BLDLEVEL format, only
811	* pszDescription will be set. The other fields remain
812	* NULL. Still, NO_ERROR is returned.
813	*
814	* This returns the following errors:
815	*
816	* -- ERROR_INVALID_PARAMETER: pExec is NULL.
817	*
818	* -- ERROR_INVALID_EXE_SIGNATURE (191): pExec is not in
819	* LX or NE format.
820	*
821	* -- ERROR_INVALID_DATA (13): non-resident name table not found,
822	* or table is empty.
823	*
824	* -- ERROR_NOT_ENOUGH_MEMORY: malloc() failed.
825	*
826	* plus the error codes of doshReadAt.
827	*
828	*@@added V0.9.0 [umoeller]
829	*@@changed V0.9.0 (99-10-22) [umoeller]: NE format now supported
830	*@@changed V0.9.1 (99-12-06): fixed memory leak
831	*@@changed V0.9.9 (2001-04-04) [umoeller]: added more error checking
832	*@@changed V0.9.12 (2001-05-18) [umoeller]: extracted ParseBldLevel
833	*@@changed V0.9.16 (2002-01-05) [umoeller]: optimizations
834	*/
835
836	APIRET exehQueryBldLevel(PEXECUTABLE pExec)
837	{
838	APIRET arc = NO_ERROR;
839	PXFILE pFile;
840	ULONG ulNRNTOfs = 0;
841
842	if (!pExec)
843	return ERROR_INVALID_PARAMETER;
844
845	pFile = pExec->pFile;
846	if (pExec->ulExeFormat == EXEFORMAT_LX)
847	{
848	// OK, LX format:
849	// check if we have a non-resident name table
850	if (pExec->pLXHeader == NULL)
851	arc = ERROR_INVALID_DATA;
852	else if (pExec->pLXHeader->ulNonResdNameTblOfs == 0)
853	arc = ERROR_INVALID_DATA;
854	else
855	ulNRNTOfs = pExec->pLXHeader->ulNonResdNameTblOfs;
856	}
857	else if (pExec->ulExeFormat == EXEFORMAT_NE)
858	{
859	// OK, NE format:
860	// check if we have a non-resident name table
861	if (pExec->pNEHeader == NULL)
862	arc = ERROR_INVALID_DATA;
863	else if (pExec->pNEHeader->ulNonResdTblOfs == 0)
864	arc = ERROR_INVALID_DATA;
865	else
866	ulNRNTOfs = pExec->pNEHeader->ulNonResdTblOfs;
867	}
868	else
869	// neither LX nor NE: stop
870	arc = ERROR_INVALID_EXE_SIGNATURE;
871
872	if ( (!arc)
873	&& (ulNRNTOfs)
874	)
875	{
876	ULONG cb = 2000;
877
878	PSZ pszNameTable;
879
880	if (!(pszNameTable = (PSZ)malloc(2001)))
881	arc = ERROR_NOT_ENOUGH_MEMORY;
882	else
883	{
884	// V0.9.16 (2002-01-05) [umoeller]: rewrote the following
885
886	// read from offset of non-resident name table
887	if (!(arc = doshReadAt(pFile, // file is still open
888	ulNRNTOfs, // ofs determined above
889	&cb, // 2000
890	pszNameTable,
891	0)))
892	{
893	// the string is in Pascal format, so the
894	// first byte has the length
895	BYTE bLen;
896	if (!(bLen = *pszNameTable))
897	// length byte is null:
898	arc = ERROR_INVALID_DATA;
899	else
900	{
901	// now copy the string
902	if (!(pExec->pszDescription = (PSZ)malloc(bLen + 1)))
903	arc = ERROR_NOT_ENOUGH_MEMORY;
904	else
905	{
906	memcpy(pExec->pszDescription,
907	pszNameTable + 1, // skip length byte
908	bLen); // length byte
909	// terminate string
910	pExec->pszDescription[bLen] = 0;
911
912	ParseBldLevel(pExec);
913	}
914	}
915	}
916
917	free(pszNameTable);
918	}
919	}
920
921	return arc;
922	}
923
924	/*
925	*@@ exehQueryProgType:
926	* attempts to sets *pulProgType to a PROGTYPE constant.
927	*
928	* Returns:
929	*
930	* -- NO_ERROR
931	*
932	* -- ERROR_INVALID_PARAMETER;
933	*
934	*@@added V1.0.1 (2003-01-17) [umoeller]
935	*@@changed V1.0.1 (2003-01-17) [umoeller]: now correctly returning PROG_PDD/VDD for NE and LX @@fixes 343
936	*/
937
938	APIRET exehQueryProgType(const EXECUTABLE *pExec,
939	PROGCATEGORY *pulProgType)
940	{
941	APIRET arc = NO_ERROR;
942
943	if (!pExec)
944	return ERROR_INVALID_PARAMETER;
945
946	// now we have the PEXECUTABLE:
947	// check what we found
948	switch (pExec->ulOS)
949	{
950	case EXEOS_DOS3:
951	case EXEOS_DOS4:
952	*pulProgType = PROG_WINDOWEDVDM;
953	break;
954
955	case EXEOS_OS2:
956	switch (pExec->ulExeFormat)
957	{
958	case EXEFORMAT_LX:
959	switch (pExec->pLXHeader->ulFlags & E32MODMASK)
960	{
961	case E32MODPDEV:
962	*pulProgType = PROG_PDD;
963	break;
964
965	case E32MODVDEV:
966	*pulProgType = PROG_VDD;
967	break;
968
969	case E32MODDLL:
970	case E32MODPROTDLL:
971	*pulProgType = PROG_DLL;
972	break;
973
974	default:
975	// all bits clear: --> real executable
976	switch (pExec->pLXHeader->ulFlags & E32APPMASK)
977	{
978	case E32PMAPI:
979	// _Pmpf((" LX OS2 PM"));
980	*pulProgType = PROG_PM;
981	break;
982
983	case E32PMW:
984	// _Pmpf((" LX OS2 VIO"));
985	*pulProgType = PROG_WINDOWABLEVIO;
986	break;
987
988	case E32NOPMW:
989	// _Pmpf((" LX OS2 FULLSCREEN"));
990	*pulProgType = PROG_FULLSCREEN;
991	break;
992
993	default:
994	// _Pmpf((" LX OS2 FULLSCREEN"));
995	*pulProgType = PROG_FULLSCREEN;
996	break;
997	}
998	break; // executable
999	}
1000	break;
1001
1002	case EXEFORMAT_NE:
1003	if (pExec->fLibrary)
1004	{
1005	// there is no flag in the NE header for whether
1006	// this is a device driver, so rely on extension
1007	// V1.0.1 (2003-01-17) [umoeller]
1008	PSZ p;
1009	if ( (p = doshGetExtension(pExec->pFile->pszFilename))
1010	&& ( (!stricmp(p, "ADD"))
1011	\|\| (!stricmp(p, "DMD"))
1012	\|\| (!stricmp(p, "FLT"))
1013	\|\| (!stricmp(p, "IFS"))
1014	\|\| (!stricmp(p, "SNP"))
1015	\|\| (!stricmp(p, "SYS"))
1016	)
1017	)
1018	*pulProgType = PROG_PDD;
1019	// there can be no 16-bit VDDs, so this must be a PDD
1020	else
1021	*pulProgType = PROG_DLL;
1022	}
1023	else switch (pExec->pNEHeader->usFlags & NEAPPTYP)
1024	{
1025	case NEWINCOMPAT:
1026	// _Pmpf((" NE OS2 VIO"));
1027	*pulProgType = PROG_WINDOWABLEVIO;
1028	break;
1029
1030	case NEWINAPI:
1031	// _Pmpf((" NE OS2 PM"));
1032	*pulProgType = PROG_PM;
1033	break;
1034
1035	case NENOTWINCOMPAT:
1036	default:
1037	// _Pmpf((" NE OS2 FULLSCREEN"));
1038	*pulProgType = PROG_FULLSCREEN;
1039	break;
1040	}
1041	break;
1042
1043	case EXEFORMAT_COM:
1044	*pulProgType = PROG_WINDOWABLEVIO;
1045	break;
1046
1047	default:
1048	arc = ERROR_INVALID_EXE_SIGNATURE;
1049	}
1050	break;
1051
1052	case EXEOS_WIN16:
1053	case EXEOS_WIN386:
1054	// _Pmpf((" WIN16"));
1055	*pulProgType = PROG_31_ENHSEAMLESSCOMMON;
1056	break;
1057
1058	case EXEOS_WIN32_GUI:
1059	case EXEOS_WIN32_CLI:
1060	// _Pmpf((" WIN32"));
1061	*pulProgType = PROG_WIN32;
1062	break;
1063
1064	default:
1065	arc = ERROR_INVALID_EXE_SIGNATURE;
1066	}
1067
1068	return arc;
1069	}
1070
1071	/*
1072	*@@ PROGTYPESTRING:
1073	*
1074	*@@added V0.9.16 (2002-01-13) [umoeller]
1075	*/
1076
1077	typedef struct _PROGTYPESTRING
1078	{
1079	PROGCATEGORY progc;
1080	PCSZ pcsz;
1081	} PROGTYPESTRING, *PPROGTYPESTRING;
1082
1083	PROGTYPESTRING G_aProgTypes[] =
1084	{
1085	PROG_DEFAULT, "PROG_DEFAULT",
1086	PROG_FULLSCREEN, "PROG_FULLSCREEN",
1087	PROG_WINDOWABLEVIO, "PROG_WINDOWABLEVIO",
1088	PROG_PM, "PROG_PM",
1089	PROG_GROUP, "PROG_GROUP",
1090	PROG_VDM, "PROG_VDM",
1091	// same as PROG_REAL, "PROG_REAL",
1092	PROG_WINDOWEDVDM, "PROG_WINDOWEDVDM",
1093	PROG_DLL, "PROG_DLL",
1094	PROG_PDD, "PROG_PDD",
1095	PROG_VDD, "PROG_VDD",
1096	PROG_WINDOW_REAL, "PROG_WINDOW_REAL",
1097	PROG_30_STD, "PROG_30_STD",
1098	// same as PROG_WINDOW_PROT, "PROG_WINDOW_PROT",
1099	PROG_WINDOW_AUTO, "PROG_WINDOW_AUTO",
1100	PROG_30_STDSEAMLESSVDM, "PROG_30_STDSEAMLESSVDM",
1101	// same as PROG_SEAMLESSVDM, "PROG_SEAMLESSVDM",
1102	PROG_30_STDSEAMLESSCOMMON, "PROG_30_STDSEAMLESSCOMMON",
1103	// same as PROG_SEAMLESSCOMMON, "PROG_SEAMLESSCOMMON",
1104	PROG_31_STDSEAMLESSVDM, "PROG_31_STDSEAMLESSVDM",
1105	PROG_31_STDSEAMLESSCOMMON, "PROG_31_STDSEAMLESSCOMMON",
1106	PROG_31_ENHSEAMLESSVDM, "PROG_31_ENHSEAMLESSVDM",
1107	PROG_31_ENHSEAMLESSCOMMON, "PROG_31_ENHSEAMLESSCOMMON",
1108	PROG_31_ENH, "PROG_31_ENH",
1109	PROG_31_STD, "PROG_31_STD",
1110
1111	// Warp 4 toolkit defines, whatever these were designed for...
1112	#ifndef PROG_DOS_GAME
1113	#define PROG_DOS_GAME (PROGCATEGORY)21
1114	#endif
1115	#ifndef PROG_WIN_GAME
1116	#define PROG_WIN_GAME (PROGCATEGORY)22
1117	#endif
1118	#ifndef PROG_DOS_MODE
1119	#define PROG_DOS_MODE (PROGCATEGORY)23
1120	#endif
1121
1122	PROG_DOS_GAME, "PROG_DOS_GAME",
1123	PROG_WIN_GAME, "PROG_WIN_GAME",
1124	PROG_DOS_MODE, "PROG_DOS_MODE",
1125
1126	// added this V0.9.16 (2001-12-08) [umoeller]
1127	PROG_WIN32, "PROG_WIN32"
1128	};
1129
1130	/*
1131	*@@ exehDescribeProgType:
1132	* returns a "PROG_*" string for the given
1133	* program type. Useful for WPProgram setup
1134	* strings and such.
1135	*
1136	*@@added V0.9.16 (2001-10-06)
1137	*@@changed V1.0.1 (2003-01-17) [umoeller]: moved this here from apps.c
1138	*/
1139
1140	PCSZ exehDescribeProgType(PROGCATEGORY progc) // in: from PROGDETAILS.progc
1141	{
1142	ULONG ul;
1143	for (ul = 0;
1144	ul < ARRAYITEMCOUNT(G_aProgTypes);
1145	ul++)
1146	{
1147	if (G_aProgTypes[ul].progc == progc)
1148	return G_aProgTypes[ul].pcsz;
1149	}
1150
1151	return NULL;
1152	}
1153
1154	/*
1155	*@@ exehQueryImportedModules:
1156	* returns an array of FSYSMODULE structure describing all
1157	* imported modules.
1158	*
1159	* *pcModules receives the # of items in the array (not the
1160	* array size!). Use doshFreeImportedModules to clean up.
1161	*
1162	* This returns a standard OS/2 error code, which might be
1163	* any of the codes returned by DosSetFilePtr and DosRead.
1164	* In addition, this may return:
1165	*
1166	* -- ERROR_NOT_ENOUGH_MEMORY
1167	*
1168	* -- ERROR_INVALID_EXE_SIGNATURE: exe is in a format other
1169	* than LX or NE, which is not understood by this function.
1170	*
1171	* Even if NO_ERROR is returned, the array pointer might still
1172	* be NULL if the module contains no such data.
1173	*
1174	*@@added V0.9.9 (2001-03-11) [lafaix]
1175	*@@changed V0.9.9 (2001-04-03) [umoeller]: added tons of error checking, changed prototype to return APIRET
1176	*@@changed V0.9.9 (2001-04-05) [lafaix]: rewritten error checking code
1177	*@@changed V0.9.10 (2001-04-10) [lafaix]: added Win16 and Win386 support
1178	*@@changed V0.9.10 (2001-04-13) [lafaix]: removed 127 characters limit
1179	*@@changed V0.9.12 (2001-05-03) [umoeller]: adjusted for new NOSTUB support
1180	*/
1181
1182	APIRET exehQueryImportedModules(PEXECUTABLE pExec,
1183	PFSYSMODULE *ppaModules, // out: modules array
1184	PULONG pcModules) // out: array item count
1185	{
1186	if ( (pExec)
1187	&& ( (pExec->ulOS == EXEOS_OS2)
1188	\|\| (pExec->ulOS == EXEOS_WIN16)
1189	\|\| (pExec->ulOS == EXEOS_WIN386)
1190	)
1191	)
1192	{
1193	ENSURE_BEGIN;
1194	ULONG cModules = 0;
1195	PFSYSMODULE paModules = NULL;
1196	int i;
1197	HFILE hfExe = pExec->pFile->hf;
1198
1199	ULONG ulNewHeaderOfs = 0; // V0.9.12 (2001-05-03) [umoeller]
1200
1201	if (pExec->pDosExeHeader)
1202	// executable has DOS stub: V0.9.12 (2001-05-03) [umoeller]
1203	ulNewHeaderOfs = pExec->pDosExeHeader->ulNewHeaderOfs;
1204
1205	if (pExec->ulExeFormat == EXEFORMAT_LX)
1206	{
1207	// 32-bit OS/2 executable:
1208	cModules = pExec->pLXHeader->ulImportModTblCnt;
1209
1210	if (cModules)
1211	{
1212	ULONG cb = sizeof(FSYSMODULE) * cModules; // V0.9.9 (2001-04-03) [umoeller]
1213	ULONG ulDummy;
1214
1215	paModules = (PFSYSMODULE)malloc(cb);
1216	if (!paModules)
1217	ENSURE_FAIL(ERROR_NOT_ENOUGH_MEMORY); // V0.9.9 (2001-04-03) [umoeller]
1218
1219	memset(paModules, 0, cb); // V0.9.9 (2001-04-03) [umoeller]
1220
1221	ENSURE_SAFE(DosSetFilePtr(hfExe,
1222	pExec->pLXHeader->ulImportModTblOfs
1223	+ ulNewHeaderOfs, // V0.9.12 (2001-05-03) [umoeller]
1224	FILE_BEGIN,
1225	&ulDummy));
1226
1227	for (i = 0; i < cModules; i++)
1228	{
1229	BYTE bLen = 0;
1230
1231	// reading the length of the module name
1232	ENSURE_SAFE(DosRead(hfExe, &bLen, 1, &ulDummy));
1233
1234	// reading the module name
1235	ENSURE_SAFE(DosRead(hfExe,
1236	paModules[i].achModuleName,
1237	bLen,
1238	&ulDummy));
1239
1240	// module names are not null terminated, so we must
1241	// do it now
1242	paModules[i].achModuleName[bLen] = 0;
1243	} // end for
1244	}
1245	} // end LX
1246	else if (pExec->ulExeFormat == EXEFORMAT_NE)
1247	{
1248	// 16-bit executable:
1249	cModules = pExec->pNEHeader->usModuleTblEntries;
1250
1251	if (cModules)
1252	{
1253	ULONG cb = sizeof(FSYSMODULE) * cModules;
1254
1255	paModules = (PFSYSMODULE)malloc(cb);
1256	if (!paModules)
1257	ENSURE_FAIL(ERROR_NOT_ENOUGH_MEMORY); // V0.9.9 (2001-04-03) [umoeller]
1258
1259	memset(paModules, 0, cb); // V0.9.9 (2001-04-03) [umoeller]
1260
1261	for (i = 0; i < cModules; i ++)
1262	{
1263	BYTE bLen;
1264	USHORT usOfs;
1265	ULONG ulDummy;
1266
1267	// the module reference table contains offsets
1268	// relative to the import table; we hence read
1269	// the offset in the module reference table, and
1270	// then we read the name in the import table
1271
1272	ENSURE_SAFE(DosSetFilePtr(hfExe,
1273	pExec->pNEHeader->usModRefTblOfs
1274	+ ulNewHeaderOfs // V0.9.12 (2001-05-03) [umoeller]
1275	+ sizeof(usOfs) * i,
1276	FILE_BEGIN,
1277	&ulDummy));
1278
1279	ENSURE_SAFE(DosRead(hfExe, &usOfs, 2, &ulDummy));
1280
1281	ENSURE_SAFE(DosSetFilePtr(hfExe,
1282	pExec->pNEHeader->usImportTblOfs
1283	+ ulNewHeaderOfs // V0.9.12 (2001-05-03) [umoeller]
1284	+ usOfs,
1285	FILE_BEGIN,
1286	&ulDummy));
1287
1288	ENSURE_SAFE(DosRead(hfExe, &bLen, 1, &ulDummy));
1289
1290	ENSURE_SAFE(DosRead(hfExe,
1291	paModules[i].achModuleName,
1292	bLen,
1293	&ulDummy));
1294
1295	paModules[i].achModuleName[bLen] = 0;
1296	} // end for
1297	}
1298	} // end NE
1299	else
1300	ENSURE_FAIL(ERROR_INVALID_EXE_SIGNATURE); // V0.9.9 (2001-04-03) [umoeller]
1301
1302	// no error: output data
1303	*ppaModules = paModules;
1304	*pcModules = cModules;
1305
1306	ENSURE_FINALLY;
1307	// if we had an error above, clean up
1308	free(paModules);
1309	ENSURE_END;
1310	}
1311	else
1312	ENSURE_FAIL(ERROR_INVALID_EXE_SIGNATURE); // V0.9.9 (2001-04-03) [umoeller]
1313
1314	ENSURE_OK;
1315	}
1316
1317	/*
1318	*@@ exehFreeImportedModules:
1319	* frees resources allocated by exehQueryImportedModules.
1320	*
1321	*@@added V0.9.9 (2001-03-11)
1322	*/
1323
1324	APIRET exehFreeImportedModules(PFSYSMODULE paModules)
1325	{
1326	free(paModules);
1327	return NO_ERROR;
1328	}
1329
1330	/*
1331	*@@ ScanLXEntryTable:
1332	* returns the number of exported entries in the entry table.
1333	*
1334	* If paFunctions is not NULL, then successive entries are
1335	* filled with the found type and ordinal values.
1336	*
1337	*@@added V0.9.9 (2001-03-30) [lafaix]
1338	*@@changed V0.9.9 (2001-04-03) [umoeller]: added tons of error checking, changed prototype to return APIRET
1339	*@@changed V0.9.9 (2001-04-05) [lafaix]: rewritten error checking code
1340	*@@changed V0.9.12 (2001-05-03) [umoeller]: adjusted for new NOSTUB support
1341	*/
1342
1343	STATIC APIRET ScanLXEntryTable(PEXECUTABLE pExec,
1344	PFSYSFUNCTION paFunctions,
1345	PULONG pcEntries) // out: entry table entry count; ptr can be NULL
1346	{
1347	ULONG ulDummy;
1348	USHORT usOrdinal = 1,
1349	usCurrent = 0;
1350	int i;
1351
1352	ULONG ulNewHeaderOfs = 0; // V0.9.12 (2001-05-03) [umoeller]
1353	HFILE hfExe = pExec->pFile->hf;
1354
1355	if (pExec->pDosExeHeader)
1356	// executable has DOS stub: V0.9.12 (2001-05-03) [umoeller]
1357	ulNewHeaderOfs = pExec->pDosExeHeader->ulNewHeaderOfs;
1358
1359	ENSURE(DosSetFilePtr(hfExe,
1360	pExec->pLXHeader->ulEntryTblOfs
1361	+ ulNewHeaderOfs, // V0.9.12 (2001-05-03) [umoeller]
1362	FILE_BEGIN,
1363	&ulDummy));
1364
1365	while (TRUE)
1366	{
1367	BYTE bCnt,
1368	bType,
1369	bFlag;
1370
1371	ENSURE(DosRead(hfExe, &bCnt, 1, &ulDummy));
1372
1373	if (bCnt == 0)
1374	// end of the entry table
1375	break;
1376
1377	ENSURE(DosRead(hfExe, &bType, 1, &ulDummy));
1378
1379	switch (bType & 0x7F)
1380	{
1381	/*
1382	* unused entries
1383	*
1384	*/
1385
1386	case 0:
1387	usOrdinal += bCnt;
1388	break;
1389
1390	/*
1391	* 16-bit entries
1392	*
1393	* the bundle type is followed by the object number
1394	* and by bCnt bFlag+usOffset entries
1395	*
1396	*/
1397
1398	case 1:
1399	ENSURE(DosSetFilePtr(hfExe,
1400	sizeof(USHORT),
1401	FILE_CURRENT,
1402	&ulDummy));
1403
1404	for (i = 0; i < bCnt; i ++)
1405	{
1406	ENSURE(DosRead(hfExe, &bFlag, 1, &ulDummy));
1407
1408	if (bFlag & 0x01)
1409	{
1410	if (paFunctions)
1411	{
1412	paFunctions[usCurrent].ulOrdinal = usOrdinal;
1413	paFunctions[usCurrent].ulType = 1;
1414	paFunctions[usCurrent].achFunctionName[0] = 0;
1415	}
1416	usCurrent++;
1417	}
1418
1419	usOrdinal++;
1420
1421	ENSURE(DosSetFilePtr(hfExe,
1422	sizeof(USHORT),
1423	FILE_CURRENT,
1424	&ulDummy));
1425
1426	} // end for
1427	break;
1428
1429	/*
1430	* 286 call gate entries
1431	*
1432	* the bundle type is followed by the object number
1433	* and by bCnt bFlag+usOffset+usCallGate entries
1434	*
1435	*/
1436
1437	case 2:
1438	ENSURE(DosSetFilePtr(hfExe,
1439	sizeof(USHORT),
1440	FILE_CURRENT,
1441	&ulDummy));
1442
1443	for (i = 0; i < bCnt; i ++)
1444	{
1445	ENSURE(DosRead(hfExe, &bFlag, 1, &ulDummy));
1446
1447	if (bFlag & 0x01)
1448	{
1449	if (paFunctions)
1450	{
1451	paFunctions[usCurrent].ulOrdinal = usOrdinal;
1452	paFunctions[usCurrent].ulType = 2;
1453	paFunctions[usCurrent].achFunctionName[0] = 0;
1454	}
1455	usCurrent++;
1456	}
1457
1458	usOrdinal++;
1459
1460	ENSURE(DosSetFilePtr(hfExe,
1461	sizeof(USHORT) + sizeof(USHORT),
1462	FILE_CURRENT,
1463	&ulDummy));
1464
1465	} // end for
1466	break;
1467
1468	/*
1469	* 32-bit entries
1470	*
1471	* the bundle type is followed by the object number
1472	* and by bCnt bFlag+ulOffset entries
1473	*
1474	*/
1475
1476	case 3:
1477	ENSURE(DosSetFilePtr(hfExe,
1478	sizeof(USHORT),
1479	FILE_CURRENT,
1480	&ulDummy));
1481
1482	for (i = 0; i < bCnt; i ++)
1483	{
1484	ENSURE(DosRead(hfExe, &bFlag, 1, &ulDummy));
1485
1486	if (bFlag & 0x01)
1487	{
1488	if (paFunctions)
1489	{
1490	paFunctions[usCurrent].ulOrdinal = usOrdinal;
1491	paFunctions[usCurrent].ulType = 3;
1492	paFunctions[usCurrent].achFunctionName[0] = 0;
1493	}
1494	usCurrent++;
1495	}
1496
1497	usOrdinal++;
1498
1499	ENSURE(DosSetFilePtr(hfExe,
1500	sizeof(ULONG),
1501	FILE_CURRENT,
1502	&ulDummy));
1503	} // end for
1504	break;
1505
1506	/*
1507	* forwarder entries
1508	*
1509	* the bundle type is followed by a reserved word
1510	* and by bCnt bFlag+usModOrd+ulOffsOrdNum entries
1511	*
1512	*/
1513
1514	case 4:
1515	ENSURE(DosSetFilePtr(hfExe,
1516	sizeof(USHORT),
1517	FILE_CURRENT,
1518	&ulDummy));
1519
1520	for (i = 0; i < bCnt; i ++)
1521	{
1522	ENSURE(DosSetFilePtr(hfExe,
1523	sizeof(BYTE) + sizeof(USHORT) + sizeof(ULONG),
1524	FILE_CURRENT,
1525	&ulDummy));
1526
1527	if (paFunctions)
1528	{
1529	paFunctions[usCurrent].ulOrdinal = usOrdinal;
1530	paFunctions[usCurrent].ulType = 4;
1531	paFunctions[usCurrent].achFunctionName[0] = 0;
1532	}
1533	usCurrent++;
1534
1535	usOrdinal++;
1536	} // end for
1537	break;
1538
1539	/*
1540	* unknown bundle type
1541	*
1542	* we don't know how to handle this bundle, so we must
1543	* stop parsing the entry table here (as we don't know the
1544	* bundle size); if paFunctions is not null, we fill it with
1545	* informative data
1546	*/
1547
1548	default:
1549	if (paFunctions)
1550	{
1551	paFunctions[usCurrent].ulOrdinal = usOrdinal;
1552	paFunctions[usCurrent].ulType = bType;
1553	sprintf(paFunctions[usCurrent].achFunctionName,
1554	"Unknown bundle type encountered (%d). Aborting entry table scan.",
1555	bType);
1556
1557	usCurrent++;
1558	}
1559	ENSURE_FAIL(ERROR_INVALID_LIST_FORMAT);
1560	// whatever
1561	// V0.9.9 (2001-04-03) [umoeller]
1562	} // end switch (bType & 0x7F)
1563	} // end while (TRUE)
1564
1565	if (pcEntries)
1566	*pcEntries = usCurrent;
1567
1568	ENSURE_OK;
1569	}
1570
1571	/*
1572	*@@ ScanNEEntryTable:
1573	* returns the number of exported entries in the entry table.
1574	*
1575	* if paFunctions is not NULL, then successive entries are
1576	* filled with the found type and ordinal values.
1577	*
1578	*@@added V0.9.9 (2001-03-30) [lafaix]
1579	*@@changed V0.9.9 (2001-04-03) [umoeller]: added tons of error checking, changed prototype to return APIRET
1580	*@@changed V0.9.9 (2001-04-05) [lafaix]: rewritten error checking code
1581	*@@changed V0.9.12 (2001-05-03) [umoeller]: adjusted for new NOSTUB support
1582	*/
1583
1584	STATIC APIRET ScanNEEntryTable(PEXECUTABLE pExec,
1585	PFSYSFUNCTION paFunctions,
1586	PULONG pcEntries) // out: entry table entry count; ptr can be NULL
1587	{
1588	ULONG ulDummy;
1589	USHORT usOrdinal = 1,
1590	usCurrent = 0;
1591	int i;
1592
1593	ULONG ulNewHeaderOfs = 0;
1594	HFILE hfExe = pExec->pFile->hf;
1595
1596	if (pExec->pDosExeHeader)
1597	// executable has DOS stub: V0.9.12 (2001-05-03) [umoeller]
1598	ulNewHeaderOfs = pExec->pDosExeHeader->ulNewHeaderOfs;
1599
1600	ENSURE(DosSetFilePtr(hfExe,
1601	pExec->pNEHeader->usEntryTblOfs
1602	+ ulNewHeaderOfs, // V0.9.12 (2001-05-03) [umoeller]
1603	FILE_BEGIN,
1604	&ulDummy));
1605
1606	while (TRUE)
1607	{
1608	BYTE bCnt,
1609	bType,
1610	bFlag;
1611
1612	ENSURE(DosRead(hfExe, &bCnt, 1, &ulDummy));
1613
1614	if (bCnt == 0)
1615	// end of the entry table
1616	break;
1617
1618	ENSURE(DosRead(hfExe, &bType, 1, &ulDummy));
1619
1620	if (bType)
1621	{
1622	for (i = 0; i < bCnt; i++)
1623	{
1624	ENSURE(DosRead(hfExe,
1625	&bFlag,
1626	1,
1627	&ulDummy));
1628
1629	if (bFlag & 0x01)
1630	{
1631	if (paFunctions)
1632	{
1633	paFunctions[usCurrent].ulOrdinal = usOrdinal;
1634	paFunctions[usCurrent].ulType = 1; // 16-bit entry
1635	paFunctions[usCurrent].achFunctionName[0] = 0;
1636	}
1637	usCurrent++;
1638	}
1639
1640	usOrdinal++;
1641
1642	if (bType == 0xFF)
1643	{
1644	// moveable segment
1645	ENSURE(DosSetFilePtr(hfExe,
1646	5,
1647	FILE_CURRENT,
1648	&ulDummy));
1649	}
1650	else
1651	{
1652	// fixed segment or constant (0xFE)
1653	ENSURE(DosSetFilePtr(hfExe,
1654	2,
1655	FILE_CURRENT,
1656	&ulDummy));
1657	}
1658
1659	} // end for
1660	}
1661	else
1662	usOrdinal += bCnt;
1663	} // end while (TRUE)
1664
1665	if (pcEntries)
1666	*pcEntries = usCurrent;
1667
1668	ENSURE_OK;
1669	}
1670
1671	/*
1672	*@@ Compare:
1673	* binary search helper
1674	*
1675	*@@added V0.9.9 (2001-04-01) [lafaix]
1676	*@@changed V0.9.9 (2001-04-07) [umoeller]: added _Optlink, or this won't compile as C++
1677	*/
1678
1679	STATIC int _Optlink Compare(const void *key,
1680	const void *element)
1681	{
1682	USHORT usOrdinal = *((PUSHORT) key);
1683	PFSYSFUNCTION pFunction = (PFSYSFUNCTION)element;
1684
1685	if (usOrdinal > pFunction->ulOrdinal)
1686	return 1;
1687	else if (usOrdinal < pFunction->ulOrdinal)
1688	return -1;
1689
1690	return 0;
1691	}
1692
1693	/*
1694	*@@ ScanNameTable:
1695	* scans a resident or non-resident name table, and fills the
1696	* appropriate paFunctions entries when it encounters exported
1697	* entries names.
1698	*
1699	* This functions works for both NE and LX executables.
1700	*
1701	*@@added V0.9.9 (2001-03-30) [lafaix]
1702	*@@changed V0.9.9 (2001-04-02) [lafaix]: the first entry is special
1703	*@@changed V0.9.9 (2001-04-03) [umoeller]: added tons of error checking, changed prototype to return APIRET
1704	*@@changed V0.9.9 (2001-04-05) [lafaix]: removed the 127 char limit
1705	*@@changed V0.9.9 (2001-04-05) [lafaix]: rewritten error checking code
1706	*/
1707
1708	STATIC APIRET ScanNameTable(PEXECUTABLE pExec,
1709	ULONG cFunctions,
1710	PFSYSFUNCTION paFunctions)
1711	{
1712	ULONG ulDummy;
1713
1714	USHORT usOrdinal;
1715	PFSYSFUNCTION pFunction;
1716	HFILE hfExe = pExec->pFile->hf;
1717
1718	while (TRUE)
1719	{
1720	BYTE bLen;
1721	CHAR achName[256];
1722	// int i;
1723
1724	ENSURE(DosRead(hfExe, &bLen, 1, &ulDummy));
1725
1726	if (bLen == 0)
1727	// end of the name table
1728	break;
1729
1730	ENSURE(DosRead(hfExe, &achName, bLen, &ulDummy));
1731	achName[bLen] = 0;
1732
1733	ENSURE(DosRead(hfExe, &usOrdinal, sizeof(USHORT), &ulDummy));
1734
1735	if ((pFunction = (PFSYSFUNCTION)bsearch(&usOrdinal,
1736	paFunctions,
1737	cFunctions,
1738	sizeof(FSYSFUNCTION),
1739	Compare)))
1740	{
1741	memcpy(pFunction->achFunctionName,
1742	achName,
1743	bLen+1);
1744	}
1745	}
1746
1747	ENSURE_OK;
1748	}
1749
1750	/*
1751	*@@ exehQueryExportedFunctions:
1752	* returns an array of FSYSFUNCTION structure describing all
1753	* exported functions.
1754	*
1755	* *pcFunctions receives the # of items in the array (not the
1756	* array size!). Use doshFreeExportedFunctions to clean up.
1757	*
1758	* Note that the returned array only contains entry for exported
1759	* functions. Empty export entries are _not_ included.
1760	*
1761	* This returns a standard OS/2 error code, which might be
1762	* any of the codes returned by DosSetFilePtr and DosRead.
1763	* In addition, this may return:
1764	*
1765	* -- ERROR_NOT_ENOUGH_MEMORY
1766	*
1767	* -- ERROR_INVALID_EXE_SIGNATURE: exe is in a format other
1768	* than LX or NE, which is not understood by this function.
1769	*
1770	* -- If ERROR_INVALID_LIST_FORMAT is returned, the format of an
1771	* export entry wasn't understood here.
1772	*
1773	* Even if NO_ERROR is returned, the array pointer might still
1774	* be NULL if the module contains no such data.
1775	*
1776	*@@added V0.9.9 (2001-03-11) [lafaix]
1777	*@@changed V0.9.9 (2001-04-03) [umoeller]: added tons of error checking, changed prototype to return APIRET
1778	*@@changed V0.9.9 (2001-04-05) [lafaix]: rewritten error checking code
1779	*@@changed V0.9.10 (2001-04-10) [lafaix]: added Win16 and Win386 support
1780	*@@changed V0.9.12 (2001-05-03) [umoeller]: adjusted for new NOSTUB support
1781	*/
1782
1783	APIRET exehQueryExportedFunctions(PEXECUTABLE pExec,
1784	PFSYSFUNCTION *ppaFunctions, // out: functions array
1785	PULONG pcFunctions) // out: array item count
1786	{
1787	if ( (pExec)
1788	&& ( (pExec->ulOS == EXEOS_OS2)
1789	\|\| (pExec->ulOS == EXEOS_WIN16)
1790	\|\| (pExec->ulOS == EXEOS_WIN386)
1791	)
1792	)
1793	{
1794	ENSURE_BEGIN;
1795	ULONG cFunctions = 0;
1796	PFSYSFUNCTION paFunctions = NULL;
1797
1798	ULONG ulDummy;
1799
1800	HFILE hfExe = pExec->pFile->hf;
1801	ULONG ulNewHeaderOfs = 0; // V0.9.12 (2001-05-03) [umoeller]
1802
1803	if (pExec->pDosExeHeader)
1804	// executable has DOS stub: V0.9.12 (2001-05-03) [umoeller]
1805	ulNewHeaderOfs = pExec->pDosExeHeader->ulNewHeaderOfs;
1806
1807	if (pExec->ulExeFormat == EXEFORMAT_LX)
1808	{
1809	// It's a 32bit OS/2 executable
1810
1811	// the number of exported entry points is not stored
1812	// in the executable header; we have to count them in
1813	// the entry table
1814
1815	ENSURE(ScanLXEntryTable(pExec, NULL, &cFunctions));
1816
1817	// we now have the number of exported entries; let us
1818	// build them
1819
1820	if (cFunctions)
1821	{
1822	ULONG cb = sizeof(FSYSFUNCTION) * cFunctions;
1823
1824	paFunctions = (PFSYSFUNCTION)malloc(cb);
1825	if (!paFunctions)
1826	ENSURE_FAIL(ERROR_NOT_ENOUGH_MEMORY);
1827
1828	// we rescan the entry table (the cost is not as bad
1829	// as it may seem, due to disk caching)
1830
1831	ENSURE_SAFE(ScanLXEntryTable(pExec, paFunctions, NULL));
1832
1833	// we now scan the resident name table entries
1834
1835	ENSURE_SAFE(DosSetFilePtr(hfExe,
1836	pExec->pLXHeader->ulResdNameTblOfs
1837	+ ulNewHeaderOfs, // V0.9.12 (2001-05-03) [umoeller]
1838	FILE_BEGIN,
1839	&ulDummy));
1840
1841	ENSURE_SAFE(ScanNameTable(pExec, cFunctions, paFunctions));
1842
1843	// we now scan the non-resident name table entries,
1844	// whose offset is _from the begining of the file_
1845
1846	ENSURE_SAFE(DosSetFilePtr(hfExe,
1847	pExec->pLXHeader->ulNonResdNameTblOfs,
1848	FILE_BEGIN,
1849	&ulDummy));
1850
1851	ENSURE_SAFE(ScanNameTable(pExec, cFunctions, paFunctions));
1852	} // end if (cFunctions)
1853	}
1854	else if (pExec->ulExeFormat == EXEFORMAT_NE)
1855	{
1856	// it's a "new" segmented 16bit executable
1857
1858	// here too the number of exported entry points
1859	// is not stored in the executable header; we
1860	// have to count them in the entry table
1861
1862	ENSURE(ScanNEEntryTable(pExec, NULL, &cFunctions));
1863
1864	// we now have the number of exported entries; let us
1865	// build them
1866
1867	if (cFunctions)
1868	{
1869	// USHORT usOrdinal = 1;
1870	// usCurrent = 0;
1871
1872	paFunctions = (PFSYSFUNCTION)malloc(sizeof(FSYSFUNCTION) * cFunctions);
1873	if (!paFunctions)
1874	ENSURE_FAIL(ERROR_NOT_ENOUGH_MEMORY);
1875
1876	// we rescan the entry table (the cost is not as bad
1877	// as it may seem, due to disk caching)
1878
1879	ENSURE_SAFE(ScanNEEntryTable(pExec, paFunctions, NULL));
1880
1881	// we now scan the resident name table entries
1882
1883	ENSURE_SAFE(DosSetFilePtr(hfExe,
1884	pExec->pNEHeader->usResdNameTblOfs
1885	+ ulNewHeaderOfs, // V0.9.12 (2001-05-03) [umoeller]
1886	FILE_BEGIN,
1887	&ulDummy));
1888
1889	ENSURE_SAFE(ScanNameTable(pExec, cFunctions, paFunctions));
1890
1891	// we now scan the non-resident name table entries,
1892	// whose offset is _from the begining of the file_
1893
1894	ENSURE_SAFE(DosSetFilePtr(hfExe,
1895	pExec->pNEHeader->ulNonResdTblOfs,
1896	FILE_BEGIN,
1897	&ulDummy));
1898
1899	ENSURE_SAFE(ScanNameTable(pExec, cFunctions, paFunctions));
1900	}
1901	}
1902	else
1903	ENSURE_FAIL(ERROR_INVALID_EXE_SIGNATURE); // V0.9.9 (2001-04-03) [umoeller]
1904
1905	// no error: output data
1906	*ppaFunctions = paFunctions;
1907	*pcFunctions = cFunctions;
1908
1909	ENSURE_FINALLY;
1910	// if we had an error above, clean up
1911	free(paFunctions);
1912	ENSURE_END;
1913	}
1914	else
1915	ENSURE_FAIL(ERROR_INVALID_EXE_SIGNATURE); // V0.9.9 (2001-04-03) [umoeller]
1916
1917	ENSURE_OK;
1918	}
1919
1920	/*
1921	*@@ exehFreeExportedFunctions:
1922	* frees resources allocated by exehQueryExportedFunctions.
1923	*
1924	*@@added V0.9.9 (2001-03-11)
1925	*/
1926
1927	APIRET exehFreeExportedFunctions(PFSYSFUNCTION paFunctions)
1928	{
1929	free(paFunctions);
1930
1931	return NO_ERROR;
1932	}
1933
1934	/*
1935	*@@ exehQueryResources:
1936	* returns an array of FSYSRESOURCE structures describing all
1937	* available resources in the module.
1938	*
1939	* *pcResources receives the no. of items in the array
1940	* (not the array size!). Use exehFreeResources to clean up.
1941	*
1942	* This returns a standard OS/2 error code, which might be
1943	* any of the codes returned by DosSetFilePtr and DosRead.
1944	* In addition, this may return:
1945	*
1946	* -- ERROR_NOT_ENOUGH_MEMORY
1947	*
1948	* -- ERROR_INVALID_EXE_SIGNATURE: exe is in a format other
1949	* than LX or NE, which is not understood by this function.
1950	*
1951	* Even if NO_ERROR is returned, the array pointer might still
1952	* be NULL if the module contains no such data.
1953	*
1954	*@@added V0.9.7 (2000-12-18) [lafaix]
1955	*@@changed V0.9.9 (2001-04-03) [umoeller]: added tons of error checking, changed prototype to return APIRET
1956	*@@changed V0.9.10 (2001-04-10) [lafaix]: added Win16 and Win386 support
1957	*@@changed V0.9.12 (2001-05-03) [umoeller]: adjusted for new NOSTUB support
1958	*/
1959
1960	APIRET exehQueryResources(PEXECUTABLE pExec, // in: executable from exehOpen
1961	PFSYSRESOURCE *ppaResources, // out: res's array
1962	PULONG pcResources) // out: array item count
1963	{
1964	if ( (pExec)
1965	&& ( (pExec->ulOS == EXEOS_OS2)
1966	\|\| (pExec->ulOS == EXEOS_WIN16)
1967	\|\| (pExec->ulOS == EXEOS_WIN386)
1968	)
1969	)
1970	{
1971	ENSURE_BEGIN;
1972	ULONG cResources = 0;
1973	PFSYSRESOURCE paResources = NULL;
1974
1975	HFILE hfExe = pExec->pFile->hf;
1976	ULONG ulNewHeaderOfs = 0; // V0.9.12 (2001-05-03) [umoeller]
1977
1978	if (pExec->pDosExeHeader)
1979	// executable has DOS stub: V0.9.12 (2001-05-03) [umoeller]
1980	ulNewHeaderOfs = pExec->pDosExeHeader->ulNewHeaderOfs;
1981
1982	if (pExec->ulExeFormat == EXEFORMAT_LX)
1983	{
1984	// 32-bit OS/2 executable:
1985	PLXHEADER pLXHeader = pExec->pLXHeader;
1986	if (cResources = pLXHeader->ulResTblCnt)
1987	{
1988	#pragma pack(1) // V0.9.9 (2001-04-02) [umoeller]
1989	struct rsrc32 // Resource Table Entry
1990	{
1991	unsigned short type; // Resource type
1992	unsigned short name; // Resource name
1993	unsigned long cb; // Resource size
1994	unsigned short obj; // Object number
1995	unsigned long offset; // Offset within object
1996	} rs;
1997
1998	struct o32_obj // Flat .EXE object table entry
1999	{
2000	unsigned long o32_size; // Object virtual size
2001	unsigned long o32_base; // Object base virtual address
2002	unsigned long o32_flags; // Attribute flags
2003	unsigned long o32_pagemap; // Object page map index
2004	unsigned long o32_mapsize; // Number of entries in object page map
2005	unsigned long o32_reserved; // Reserved
2006	} ot;
2007	#pragma pack() // V0.9.9 (2001-04-03) [umoeller]
2008
2009	ULONG cb = sizeof(FSYSRESOURCE) * cResources;
2010	ULONG ulDummy;
2011	int i;
2012	ULONG ulCurOfs;
2013
2014	paResources = (PFSYSRESOURCE)malloc(cb);
2015	if (!paResources)
2016	ENSURE_FAIL(ERROR_NOT_ENOUGH_MEMORY);
2017
2018	memset(paResources, 0, cb); // V0.9.9 (2001-04-03) [umoeller]
2019
2020	ENSURE_SAFE(DosSetFilePtr(hfExe,
2021	pLXHeader->ulResTblOfs
2022	+ ulNewHeaderOfs, // V0.9.12 (2001-05-03) [umoeller]
2023	FILE_BEGIN,
2024	&ulDummy));
2025
2026	for (i = 0; i < cResources; i++)
2027	{
2028	ENSURE_SAFE(DosRead(hfExe, &rs, 14, &ulDummy));
2029
2030	paResources[i].ulID = rs.name;
2031	paResources[i].ulType = rs.type;
2032	paResources[i].ulSize = rs.cb;
2033	paResources[i].ulFlag = rs.obj; // Temp storage for Object
2034	// number. Will be filled
2035	// with resource flag
2036	// later.
2037	}
2038
2039	for (i = 0; i < cResources; i++)
2040	{
2041	ULONG ulOfsThis = pLXHeader->ulObjTblOfs
2042	+ ulNewHeaderOfs // V0.9.12 (2001-05-03) [umoeller]
2043	+ ( sizeof(ot)
2044	* (paResources[i].ulFlag - 1));
2045
2046	ENSURE_SAFE(DosSetFilePtr(hfExe,
2047	ulOfsThis,
2048	FILE_BEGIN,
2049	&ulDummy));
2050
2051	ENSURE_SAFE(DosRead(hfExe, &ot, sizeof(ot), &ulDummy));
2052
2053	paResources[i].ulFlag = ((ot.o32_flags & OBJWRITE)
2054	? 0
2055	: RNPURE);
2056	paResources[i].ulFlag \|= ((ot.o32_flags & OBJDISCARD)
2057	? 4096
2058	: 0);
2059	paResources[i].ulFlag \|= ((ot.o32_flags & OBJSHARED)
2060	? RNMOVE
2061	: 0);
2062	paResources[i].ulFlag \|= ((ot.o32_flags & OBJPRELOAD)
2063	? RNPRELOAD
2064	: 0);
2065	} // end for
2066	} // end if (cResources)
2067	} // end if (pExec->ulExeFormat == EXEFORMAT_LX)
2068	else if (pExec->ulExeFormat == EXEFORMAT_NE)
2069	{
2070	PNEHEADER pNEHeader = pExec->pNEHeader;
2071
2072	if (pExec->ulOS == EXEOS_OS2)
2073	{
2074	// 16-bit OS/2 executable:
2075	cResources = pNEHeader->usResSegmCount;
2076
2077	if (cResources)
2078	{
2079	#pragma pack(1) // V0.9.9 (2001-04-02) [umoeller]
2080	struct {unsigned short type; unsigned short name;} rti;
2081	struct new_seg // New .EXE segment table entry
2082	{
2083	unsigned short ns_sector; // File sector of start of segment
2084	unsigned short ns_cbseg; // Number of bytes in file
2085	unsigned short ns_flags; // Attribute flags
2086	unsigned short ns_minalloc; // Minimum allocation in bytes
2087	} ns;
2088	#pragma pack()
2089
2090	ULONG cb = sizeof(FSYSRESOURCE) * cResources;
2091	ULONG ulDummy;
2092	int i;
2093
2094	paResources = (PFSYSRESOURCE)malloc(cb);
2095	if (!paResources)
2096	ENSURE_FAIL(ERROR_NOT_ENOUGH_MEMORY);
2097
2098	memset(paResources, 0, cb); // V0.9.9 (2001-04-03) [umoeller]
2099
2100	// we first read the resources IDs and types
2101
2102	ENSURE_SAFE(DosSetFilePtr(hfExe,
2103	pNEHeader->usResTblOfs
2104	+ ulNewHeaderOfs, // V0.9.12 (2001-05-03) [umoeller]
2105	FILE_BEGIN,
2106	&ulDummy));
2107
2108	for (i = 0; i < cResources; i++)
2109	{
2110	ENSURE_SAFE(DosRead(hfExe, &rti, sizeof(rti), &ulDummy));
2111
2112	paResources[i].ulID = rti.name;
2113	paResources[i].ulType = rti.type;
2114	}
2115
2116	// we then read their sizes and flags
2117
2118	for (i = 0; i < cResources; i++)
2119	{
2120	ENSURE_SAFE(DosSetFilePtr(hfExe,
2121	ulNewHeaderOfs // V0.9.12 (2001-05-03) [umoeller]
2122	+ pNEHeader->usSegTblOfs
2123	+ (sizeof(ns)
2124	* ( pNEHeader->usSegTblEntries
2125	- pNEHeader->usResSegmCount
2126	+ i)),
2127	FILE_BEGIN,
2128	&ulDummy));
2129
2130	ENSURE_SAFE(DosRead(hfExe, &ns, sizeof(ns), &ulDummy));
2131
2132	paResources[i].ulSize = ns.ns_cbseg;
2133
2134	paResources[i].ulFlag = (ns.ns_flags & OBJPRELOAD) ? RNPRELOAD : 0;
2135	paResources[i].ulFlag \|= (ns.ns_flags & OBJSHARED) ? RNPURE : 0;
2136	paResources[i].ulFlag \|= (ns.ns_flags & OBJDISCARD) ? RNMOVE : 0;
2137	paResources[i].ulFlag \|= (ns.ns_flags & OBJDISCARD) ? 4096 : 0;
2138	}
2139	} // end if (cResources)
2140	}
2141	else
2142	{
2143	// 16-bit Windows executable
2144	USHORT usAlignShift;
2145	ULONG ulDummy;
2146
2147	ENSURE(DosSetFilePtr(hfExe,
2148	pNEHeader->usResTblOfs
2149	+ ulNewHeaderOfs, // V0.9.12 (2001-05-03) [umoeller]
2150	FILE_BEGIN,
2151	&ulDummy));
2152
2153	ENSURE(DosRead(hfExe,
2154	&usAlignShift,
2155	sizeof(usAlignShift),
2156	&ulDummy));
2157
2158	while (TRUE)
2159	{
2160	USHORT usTypeID;
2161	USHORT usCount;
2162
2163	ENSURE(DosRead(hfExe,
2164	&usTypeID,
2165	sizeof(usTypeID),
2166	&ulDummy));
2167
2168	if (usTypeID == 0)
2169	break;
2170
2171	ENSURE(DosRead(hfExe,
2172	&usCount,
2173	sizeof(usCount),
2174	&ulDummy));
2175
2176	ENSURE(DosSetFilePtr(hfExe,
2177	sizeof(ULONG),
2178	FILE_CURRENT,
2179	&ulDummy));
2180
2181	cResources += usCount;
2182
2183	// first pass, skip NAMEINFO table
2184	ENSURE(DosSetFilePtr(hfExe,
2185	usCount6sizeof(USHORT),
2186	FILE_CURRENT,
2187	&ulDummy));
2188	}
2189
2190	if (cResources)
2191	{
2192	USHORT usCurrent = 0;
2193	ULONG cb = sizeof(FSYSRESOURCE) * cResources;
2194
2195	paResources = (PFSYSRESOURCE)malloc(cb);
2196	if (!paResources)
2197	ENSURE_FAIL(ERROR_NOT_ENOUGH_MEMORY);
2198
2199	memset(paResources, 0, cb);
2200
2201	ENSURE_SAFE(DosSetFilePtr(hfExe,
2202	pNEHeader->usResTblOfs
2203	+ ulNewHeaderOfs,
2204	FILE_BEGIN,
2205	&ulDummy));
2206
2207	ENSURE_SAFE(DosRead(hfExe,
2208	&usAlignShift,
2209	sizeof(usAlignShift),
2210	&ulDummy));
2211
2212	while (TRUE)
2213	{
2214	USHORT usTypeID;
2215	USHORT usCount;
2216	int i;
2217
2218	ENSURE_SAFE(DosRead(hfExe,
2219	&usTypeID,
2220	sizeof(usTypeID),
2221	&ulDummy));
2222
2223	if (usTypeID == 0)
2224	break;
2225
2226	ENSURE_SAFE(DosRead(hfExe,
2227	&usCount,
2228	sizeof(usCount),
2229	&ulDummy));
2230
2231	ENSURE_SAFE(DosSetFilePtr(hfExe,
2232	sizeof(ULONG),
2233	FILE_CURRENT,
2234	&ulDummy));
2235
2236	// second pass, read NAMEINFO table
2237	for (i = 0; i < usCount; i++)
2238	{
2239	USHORT usLength,
2240	usFlags,
2241	usID;
2242
2243	ENSURE_SAFE(DosSetFilePtr(hfExe,
2244	sizeof(USHORT),
2245	FILE_CURRENT,
2246	&ulDummy));
2247
2248	ENSURE_SAFE(DosRead(hfExe,
2249	&usLength,
2250	sizeof(USHORT),
2251	&ulDummy));
2252	ENSURE_SAFE(DosRead(hfExe,
2253	&usFlags,
2254	sizeof(USHORT),
2255	&ulDummy));
2256	ENSURE_SAFE(DosRead(hfExe,
2257	&usID,
2258	sizeof(USHORT),
2259	&ulDummy));
2260
2261	ENSURE_SAFE(DosSetFilePtr(hfExe,
2262	2*sizeof(USHORT),
2263	FILE_CURRENT,
2264	&ulDummy));
2265
2266	// !!! strings ids and types not handled yet
2267	// !!! 15th bit is used to denotes strings
2268	// !!! offsets [lafaix]
2269	paResources[usCurrent].ulType = usTypeID ^ 0x8000;
2270	paResources[usCurrent].ulID = usID ^ 0x8000;
2271	paResources[usCurrent].ulSize = usLength << usAlignShift;
2272	paResources[usCurrent].ulFlag = usFlags & 0x70;
2273
2274	usCurrent++;
2275	}
2276	}
2277	}
2278	}
2279	} // end else if (pExec->ulExeFormat == EXEFORMAT_NE)
2280	else
2281	ENSURE_FAIL(ERROR_INVALID_EXE_SIGNATURE); // V0.9.9 (2001-04-03) [umoeller]
2282
2283	*ppaResources = paResources;
2284	*pcResources = cResources;
2285
2286	ENSURE_FINALLY;
2287	// if we had an error above, clean up
2288	free(paResources);
2289	ENSURE_END;
2290	}
2291	else
2292	ENSURE_FAIL(ERROR_INVALID_EXE_SIGNATURE); // V0.9.9 (2001-04-03) [umoeller]
2293
2294	ENSURE_OK;
2295	}
2296
2297	/*
2298	*@@ exehFreeResources:
2299	* frees resources allocated by exehQueryResources.
2300	*
2301	*@@added V0.9.7 (2000-12-18) [lafaix]
2302	*/
2303
2304	APIRET exehFreeResources(PFSYSRESOURCE paResources)
2305	{
2306	free(paResources);
2307	return NO_ERROR;
2308	}
2309
2310	/*
2311	*@@ exehLoadLXMaps:
2312	* loads the three main LX maps into the given
2313	* EXECUTABLE structure.
2314	*
2315	* This loads:
2316	*
2317	* 1) the LX resource table;
2318	*
2319	* 2) the LX object table;
2320	*
2321	* 3) the LX object _page_ table (object map).
2322	*
2323	* Note that this is not automatically called
2324	* by exehOpen to save time, since the LX
2325	* maps are not needed for all the other exe
2326	* functions. However, this does get called
2327	* from exehLoadLXResource if needed.
2328	*
2329	* This returns:
2330	*
2331	* -- NO_ERROR: all three LX maps were loaded,
2332	* and pExec->fLXMapsLoaded was set to TRUE.
2333	*
2334	* -- ERROR_INVALID_PARAMETER
2335	*
2336	* -- ERROR_INVALID_EXE_SIGNATURE: pExec does
2337	* not specify an LX executable.
2338	*
2339	* -- ERROR_NO_DATA: at least one of the structs
2340	* does not exist.
2341	*
2342	* -- ERROR_NOT_ENOUGH_MEMORY
2343	*
2344	* plus the error codes of doshReadAt.
2345	*
2346	* Call exehFreeLXMaps to clean up explicitly, but
2347	* that func automatically gets called by exehClose.
2348	*
2349	*@@added V0.9.16 (2001-12-08) [umoeller]
2350	*/
2351
2352	APIRET exehLoadLXMaps(PEXECUTABLE pExec)
2353	{
2354	APIRET arc;
2355
2356	PLXHEADER pLXHeader;
2357
2358	if (!pExec)
2359	arc = ERROR_INVALID_PARAMETER;
2360	else if (pExec->fLXMapsLoaded)
2361	// already loaded:
2362	arc = NO_ERROR;
2363	else if ( (pExec->ulExeFormat != EXEFORMAT_LX)
2364	\|\| (!(pLXHeader = pExec->pLXHeader))
2365	)
2366	arc = ERROR_INVALID_EXE_SIGNATURE;
2367	else
2368	{
2369	PXFILE pFile = pExec->pFile;
2370	ULONG ulNewHeaderOfs = 0;
2371	ULONG cb;
2372
2373	if (pExec->pDosExeHeader)
2374	// executable has DOS stub: V0.9.12 (2001-05-03) [umoeller]
2375	ulNewHeaderOfs = pExec->pDosExeHeader->ulNewHeaderOfs;
2376
2377	// resource table
2378	if ( (!(arc = doshAllocArray(pLXHeader->ulResTblCnt,
2379	sizeof(RESOURCETABLEENTRY),
2380	(PBYTE*)&pExec->pRsTbl,
2381	&cb)))
2382	&& (!(arc = doshReadAt(pFile,
2383	pLXHeader->ulResTblOfs
2384	+ ulNewHeaderOfs,
2385	&cb,
2386	(PBYTE)pExec->pRsTbl,
2387	DRFL_FAILIFLESS)))
2388	)
2389	{
2390	// object table
2391	if ( (!(arc = doshAllocArray(pLXHeader->ulObjCount,
2392	sizeof(OBJECTTABLEENTRY),
2393	(PBYTE*)&pExec->pObjTbl,
2394	&cb)))
2395	&& (!(arc = doshReadAt(pFile,
2396	pLXHeader->ulObjTblOfs
2397	+ ulNewHeaderOfs,
2398	&cb,
2399	(PBYTE)pExec->pObjTbl,
2400	DRFL_FAILIFLESS)))
2401	)
2402	{
2403	// object page table
2404	if ( (!(arc = doshAllocArray(pLXHeader->ulPageCount,
2405	sizeof(OBJECTPAGETABLEENTRY),
2406	(PBYTE*)&pExec->pObjPageTbl,
2407	&cb)))
2408	&& (!(arc = doshReadAt(pFile,
2409	pLXHeader->ulObjPageTblOfs
2410	+ ulNewHeaderOfs,
2411	&cb,
2412	(PBYTE)pExec->pObjPageTbl,
2413	DRFL_FAILIFLESS)))
2414	)
2415	{
2416	}
2417	}
2418	}
2419
2420	if (!arc)
2421	pExec->fLXMapsLoaded = TRUE;
2422	else
2423	exehFreeLXMaps(pExec);
2424	}
2425
2426	return arc;
2427	}
2428
2429	/*
2430	*@@ exehFreeLXMaps:
2431	* frees data allocated by exehLoadLXMaps.
2432	* Gets called automatically by exehClose.
2433	*
2434	*@@added V0.9.16 (2001-12-08) [umoeller]
2435	*/
2436
2437	VOID exehFreeLXMaps(PEXECUTABLE pExec)
2438	{
2439	FREE(pExec->pRsTbl);
2440	FREE(pExec->pObjTbl);
2441	FREE(pExec->pObjPageTbl);
2442	pExec->fLXMapsLoaded = FALSE;
2443	}
2444
2445	// page flags (OBJECTPAGETABLEENTRY.o32_pageflags)
2446	#define VALID 0x0000 // Valid Physical Page in .EXE
2447	#define ITERDATA 0x0001 // Iterated Data Page
2448	#define INVALID 0x0002 // Invalid Page
2449	#define ZEROED 0x0003 // Zero Filled Page
2450	#define RANGE 0x0004 // Range of pages
2451	#define ITERDATA2 0x0005 // Iterated Data Page Type II
2452
2453	/*
2454	*@@ ExpandIterdata1:
2455	* expands a page compressed with the old exepack
2456	* method introduced with OS/2 2.0 (plain /EXEPACK).
2457	*
2458	* Returns either ERROR_BAD_FORMAT or NO_ERROR.
2459	*
2460	* (C) Knut Stange Osmundsen. Used with permission.
2461	*
2462	*@@added V0.9.16 (2001-12-08) [umoeller]
2463	*/
2464
2465	STATIC APIRET ExpandIterdata1(char *pabTarget, // out: page data (pagesize as in lx spec)
2466	int cbTarget, // in: sizeof *pabTarget (pagesize as in lx spec)
2467	PCSZ pabSource, // in: compressed source data in EXEPACK:1 format
2468	int cbSource) // in: sizeof *pabSource
2469	{
2470	PLXITER pIter = (PLXITER)pabSource;
2471	// store the pointer for boundary checking
2472	char *pabTargetOriginal = pabTarget;
2473
2474	// validate size of data
2475	if (cbSource >= cbTarget - 2)
2476	return ERROR_BAD_FORMAT;
2477
2478	// expand the page
2479	while ( (pIter->LX_nIter)
2480	&& (cbSource > 0)
2481	)
2482	{
2483	// check if we're out of bound
2484	ULONG nIter = pIter->LX_nIter,
2485	nBytes = pIter->LX_nBytes;
2486
2487	if ( (pabTarget - pabTargetOriginal + nIter * nBytes > cbTarget)
2488	\|\| (cbSource <= 0)
2489	)
2490	return ERROR_BAD_FORMAT;
2491
2492	if (nBytes == 1)
2493	{
2494	// one databyte
2495	memset(pabTarget, pIter->LX_Iterdata, nIter);
2496	pabTarget += nIter;
2497	cbSource -= 4 + 1;
2498	pIter++;
2499	}
2500	else
2501	{
2502	int i;
2503	for (i = nIter;
2504	i > 0;
2505	i--, pabTarget += nBytes)
2506	memcpy(pabTarget, &pIter->LX_Iterdata, nBytes);
2507	cbSource -= 4 + nBytes;
2508	pIter = (PLXITER)((char*)pIter + 4 + nBytes);
2509	}
2510	}
2511
2512	// zero remaining part of the page
2513	if (pabTarget - pabTargetOriginal < cbTarget)
2514	memset(pabTarget, 0, cbTarget - (pabTarget - pabTargetOriginal));
2515
2516	return NO_ERROR;
2517	}
2518
2519	/*
2520	*@@ memcpyw:
2521	* a special memcpy for expandPage2 which performs a
2522	* word based copy. The difference between this, memmove
2523	* and memcpy is that we'll allways read words.
2524	*
2525	* (C) Knut Stange Osmundsen. Used with permission.
2526	*
2527	*@@added V0.9.16 (2001-12-08) [umoeller]
2528	*/
2529
2530	STATIC void memcpyw(char *pch1, PCSZ pch2, size_t cch)
2531	{
2532	/*
2533	* Use memcpy if possible.
2534	*/
2535	if ((pch2 > pch1 ? pch2 - pch1 : pch1 - pch2) >= 4)
2536	{
2537	memcpy(pch1, pch2, cch); /* BUGBUG! ASSUMES that memcpy move NO more than 4 bytes at the time! */
2538	return;
2539	}
2540
2541	/*
2542	* Difference is less than 3 bytes.
2543	*/
2544	if (cch & 1)
2545	pch1++ = pch2++;
2546
2547	for (cch >>= 1;
2548	cch > 0;
2549	cch--, pch1 += 2, pch2 += 2)
2550	(PUSHORT)pch1 = (PUSHORT)pch2;
2551	}
2552
2553	/*
2554	*@@ memcpyb:
2555	* a special memcpy for expandPage2 which performs a memmove
2556	* operation. The difference between this and memmove is that
2557	* this one works.
2558	*
2559	* (C) Knut Stange Osmundsen. Used with permission.
2560	*
2561	*@@added V0.9.16 (2001-12-08) [umoeller]
2562	*/
2563
2564	STATIC void memcpyb(char *pch1, PCSZ pch2, size_t cch)
2565	{
2566	/*
2567	* Use memcpy if possible.
2568	*/
2569	if ((pch2 > pch1 ? pch2 - pch1 : pch1 - pch2) >= 4)
2570	{
2571	memcpy(pch1, pch2, cch);
2572	return;
2573	}
2574
2575	/*
2576	* Difference is less than 3 bytes.
2577	*/
2578	while(cch--)
2579	pch1++ = pch2++;
2580	}
2581
2582	/*
2583	*@@ ExpandIterdata2:
2584	* expands a page compressed with the new exepack
2585	* method introduced with OS/2 Warp 3.0 (/EXEPACK:2).
2586	*
2587	* Returns either ERROR_BAD_FORMAT or NO_ERROR.
2588	*
2589	* (C) Knut Stange Osmundsen. Used with permission.
2590	*
2591	* Note that we call special (slow) memcpy versions
2592	* here because the standard memcpy will fail on
2593	* certain bit combinations here for some unknown
2594	* reason.
2595	*
2596	*@@added V0.9.16 (2001-12-08) [umoeller]
2597	*/
2598
2599	STATIC APIRET ExpandIterdata2(char *pachPage, // out: page data (pagesize as in lx spec)
2600	int cchPage, // in: sizeof *pachPage (pagesize as in lx spec)
2601	PCSZ pachSrcPage, // in: compressed source data in EXEPACK:1 format
2602	int cchSrcPage) // in: size of source buf
2603	{
2604	char pachDestPage = pachPage; / Store the pointer for boundrary checking. */
2605
2606	while (cchSrcPage > 0)
2607	{
2608	/*
2609	* Bit 0 and 1 is the encoding type.
2610	*/
2611
2612	char cSrc = *pachSrcPage;
2613
2614	switch (cSrc & 0x03)
2615	{
2616	/*
2617	*
2618	* 0 1 2 3 4 5 6 7
2619	* type \| \|
2620	* ----------------
2621	* cch <cch bytes of data>
2622	*
2623	* Bits 2-7 is, if not zero, the length of an uncompressed run
2624	* starting at the following byte.
2625	*
2626	* 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
2627	* type \| \| \| \| \| \|
2628	* ---------------- ---------------------- -----------------------
2629	* zero cch char to multiply
2630	*
2631	* If the bits are zero, the following two bytes describes a
2632	* 1 byte interation run. First byte is count, second is the byte to copy.
2633	* A count of zero is means end of data, and we simply stops. In that case
2634	* the rest of the data should be zero.
2635	*/
2636
2637	case 0:
2638	{
2639	if (cSrc)
2640	{
2641	int cch = cSrc >> 2;
2642	if ( (cchPage >= cch)
2643	&& (cchSrcPage >= cch + 1)
2644	)
2645	{
2646	memcpy(pachPage, pachSrcPage + 1, cch);
2647	pachPage += cch, cchPage -= cch;
2648	pachSrcPage += cch + 1, cchSrcPage -= cch + 1;
2649	break; // switch (cSrc & 0x03)
2650	}
2651	return ERROR_BAD_FORMAT;
2652	}
2653
2654	if (cchSrcPage >= 2)
2655	{
2656	int cch;
2657	if (cch = pachSrcPage[1])
2658	{
2659	if ( (cchSrcPage >= 3)
2660	&& (cchPage >= cch)
2661	)
2662	{
2663	memset(pachPage, pachSrcPage[2], cch);
2664	pachPage += cch, cchPage -= cch;
2665	pachSrcPage += 3, cchSrcPage -= 3;
2666	break; // switch (cSrc & 0x03)
2667	}
2668	}
2669	else
2670	goto endloop;
2671	}
2672
2673	return ERROR_BAD_FORMAT;
2674	}
2675
2676	/*
2677	* 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
2678	* type \| \| \| \| \| \|
2679	* ---- ------- -------------------------
2680	* cch1 cch2 - 3 offset <cch1 bytes of data>
2681	*
2682	* Two bytes layed out as described above, followed by cch1 bytes of data to be copied.
2683	* The cch2(+3) and offset describes an amount of data to be copied from the expanded
2684	* data relative to the current position. The data copied as you would expect it to be.
2685	*/
2686
2687	case 1:
2688	{
2689	if (cchSrcPage >= 2)
2690	{
2691	int off = *(PUSHORT)pachSrcPage >> 7;
2692	int cch1 = cSrc >> 2 & 3;
2693	int cch2 = (cSrc >> 4 & 7) + 3;
2694	pachSrcPage += 2, cchSrcPage -= 2;
2695	if ( (cchSrcPage >= cch1)
2696	&& (cchPage >= cch1 + cch2)
2697	&& (pachPage + cch1 - off >= pachDestPage)
2698	)
2699	{
2700	memcpy(pachPage, pachSrcPage, cch1);
2701	pachPage += cch1, cchPage -= cch1;
2702	pachSrcPage += cch1, cchSrcPage -= cch1;
2703	memcpyb(pachPage, pachPage - off, cch2); //memmove doesn't do a good job here for some stupid reason.
2704	pachPage += cch2, cchPage -= cch2;
2705	break; // switch (cSrc & 0x03)
2706	}
2707	}
2708	return ERROR_BAD_FORMAT;
2709	}
2710
2711	/*
2712	* 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
2713	* type \| \| \| \|
2714	* ---- ----------------------------------
2715	* cch-3 offset
2716	*
2717	* Two bytes layed out as described above.
2718	* The cch(+3) and offset describes an amount of data to be copied from the expanded
2719	* data relative to the current position.
2720	*
2721	* If offset == 1 the data is not copied as expected, but in the memcpyw manner.
2722	*/
2723
2724	case 2:
2725	{
2726	if (cchSrcPage >= 2)
2727	{
2728	int off = *(PUSHORT)pachSrcPage >> 4;
2729	int cch = (cSrc >> 2 & 3) + 3;
2730	pachSrcPage += 2, cchSrcPage -= 2;
2731	if ( (cchPage >= cch)
2732	&& (pachPage - off >= pachDestPage)
2733	)
2734	{
2735	memcpyw(pachPage, pachPage - off, cch);
2736	pachPage += cch, cchPage -= cch;
2737	break; // switch (cSrc & 0x03)
2738	}
2739	}
2740	return ERROR_BAD_FORMAT;
2741	}
2742
2743	/*
2744	* 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
2745	* type \| \| \| \| \| \|
2746	* ---------- ---------------- ----------------------------------
2747	* cch1 cch2 offset <cch1 bytes of data>
2748	*
2749	* Three bytes layed out as described above, followed by cch1 bytes of data to be copied.
2750	* The cch2 and offset describes an amount of data to be copied from the expanded
2751	* data relative to the current position.
2752	*
2753	* If offset == 1 the data is not copied as expected, but in the memcpyw manner.
2754	*/
2755
2756	case 3:
2757	{
2758	if (cchSrcPage >= 3)
2759	{
2760	int cch1 = cSrc >> 2 & 0x000f;
2761	int cch2 = *(PUSHORT)pachSrcPage >> 6 & 0x003f;
2762	int off = *(PUSHORT)(pachSrcPage + 1) >> 4;
2763	pachSrcPage += 3, cchSrcPage -= 3;
2764	if ( (cchSrcPage >= cch1)
2765	&& (cchPage >= cch1 + cch2)
2766	&& (pachPage - off + cch1 >= pachDestPage)
2767	)
2768	{
2769	memcpy(pachPage, pachSrcPage, cch1);
2770	pachPage += cch1, cchPage -= cch1;
2771	pachSrcPage += cch1, cchSrcPage -= cch1;
2772	memcpyw(pachPage, pachPage - off, cch2);
2773	pachPage += cch2, cchPage -= cch2;
2774	break; // switch (cSrc & 0x03)
2775	}
2776	}
2777	return ERROR_BAD_FORMAT;
2778	}
2779	} // end switch (cSrc & 0x03)
2780	}
2781
2782	endloop:;
2783
2784	/*
2785	* Zero the rest of the page.
2786	*/
2787	if (cchPage > 0)
2788	memset(pachPage, 0, cchPage);
2789
2790	return 0;
2791	}
2792
2793	/*
2794	*@@ GetOfsFromPageTableIndex:
2795	* returns the offset from the executable start
2796	* for the given page table index. This checks
2797	* the given index and returns ERROR_INVALID_SEGMENT_NUMBER
2798	* if it is invalid (for safety).
2799	*
2800	* Otherwise this returns NO_ERROR and sets
2801	* pulPageOfs, pulFlags, and *pulSize to
2802	* the respective fields from the page table
2803	* entry automatically.
2804	*
2805	* Note that the caller must manually add the
2806	* page data offset for resources (or whatever
2807	* other offset from the LX header is applicable).
2808	*
2809	*@@added V0.9.16 (2001-12-08) [umoeller]
2810	*/
2811
2812	STATIC APIRET GetOfsFromPageTableIndex(PEXECUTABLE pExec, // in: executable from exehOpen
2813	ULONG ulObjPageTblIndexThis, // in: object page table index to look for
2814	PULONG pulFlags, // out: page flags
2815	PULONG pulSize, // out: page size
2816	PULONG pulPageOfs) // out: page ofs (add pLXHeader->ulDataPagesOfs to this)
2817	{
2818	OBJECTPAGETABLEENTRY *pObjPageTblEntry;
2819
2820	// watch out for out of range, or we'll trap
2821	if (ulObjPageTblIndexThis - 1 >= pExec->pLXHeader->ulPageCount)
2822	{
2823	// _Pmpf(("ulObjPageTblIndexThis %d is too large", ulObjPageTblIndexThis));
2824	return ERROR_INVALID_SEGMENT_NUMBER; // 180
2825	}
2826
2827	pObjPageTblEntry = &pExec->pObjPageTbl[ulObjPageTblIndexThis - 1];
2828
2829	// page offset: shift left by what was specified in LX header
2830	*pulPageOfs = pObjPageTblEntry->o32_pagedataoffset
2831	<< pExec->pLXHeader->ulPageLeftShift;
2832	*pulFlags = pObjPageTblEntry->o32_pageflags;
2833	*pulSize = pObjPageTblEntry->o32_pagesize;
2834
2835	return NO_ERROR;
2836	}
2837
2838	/*
2839	*@@ exehReadLXPage:
2840	* loads and possibly unpacks one LX page.
2841	*
2842	* In order to reduce memory allocations, the
2843	* caller is responsible for allocating a temp
2844	* buffer, which must be passed in with
2845	* pabCompressed.
2846	*
2847	* Returns:
2848	*
2849	* -- NO_ERROR: pbData was filled with data,
2850	* which is pLXHeader->ulPageSize in size.
2851	*
2852	* -- ERROR_INVALID_SEGMENT_NUMBER: segment
2853	* number is out of range.
2854	*
2855	* -- ERROR_BAD_FORMAT: compressed page data
2856	* is screwed somehow, or page size is
2857	* too large.
2858	*
2859	* plus the error codes of doshReadAt.
2860	*
2861	*@@added V0.9.16 (2002-01-05) [umoeller]
2862	*/
2863
2864	APIRET exehReadLXPage(PEXECUTABLE pExec, // in: executable from exehOpen
2865	ULONG ulObjPageTblIndex, // in: page table index to read
2866	ULONG ulExeOffset, // in: for resources, pLXHeader->ulDataPagesOfs
2867	PBYTE pabCompressed, // in: ptr to temp buffer which must be
2868	// pLXHeader->ulPageSize + 4 bytes in size
2869	PBYTE pbData) // out: ptr to buffer which receives actual
2870	// uncompressed page data (pLXHeader->ulPageSize)
2871	{
2872	APIRET arc;
2873	ULONG ulFlags,
2874	ulSize,
2875	ulOffset;
2876
2877	if (!(arc = GetOfsFromPageTableIndex(pExec,
2878	ulObjPageTblIndex,
2879	&ulFlags,
2880	&ulSize,
2881	&ulOffset)))
2882	{
2883	ULONG ulPageSize = pExec->pLXHeader->ulPageSize;
2884
2885	ulOffset += ulExeOffset;
2886
2887	/* _Pmpf((" reading pgtbl %d, ofs %d, type %s",
2888	ulObjPageTblIndex,
2889	ulOffset,
2890	(ulFlags == 0x0001) ? "ITERDATA"
2891	: (ulFlags == 0x0005) ? "ITERDATA2"
2892	: "uncompressed")); */
2893
2894	if (ulSize > ulPageSize)
2895	arc = ERROR_BAD_FORMAT;
2896	// go read the page data (might be compressed)
2897	else if (!(arc = doshReadAt(pExec->pFile,
2898	ulOffset,
2899	&ulSize,
2900	pabCompressed,
2901	0)))
2902	{
2903	// _Pmpf((" %d bytes read", ulSize));
2904
2905	// terminate buffer for decompress
2906	*(PULONG)(pabCompressed + ulSize) = 0;
2907
2908	switch (ulFlags)
2909	{
2910	case ITERDATA:
2911	// OS/2 2.x:
2912	arc = ExpandIterdata1(pbData,
2913	ulPageSize,
2914	pabCompressed,
2915	ulSize); // this page's size
2916	break;
2917
2918	case ITERDATA2:
2919	// Warp 3:
2920	arc = ExpandIterdata2(pbData,
2921	ulPageSize,
2922	pabCompressed,
2923	ulSize); // this page's size
2924	break;
2925
2926	case VALID:
2927	// uncompressed
2928	memcpy(pbData,
2929	pabCompressed,
2930	ulPageSize);
2931	break;
2932	}
2933	}
2934	}
2935
2936	return arc;
2937	}
2938
2939	/*
2940	*@@ exehLoadLXResource:
2941	* attempts to load the data of the resource
2942	* with the specified type and id from an LX
2943	* executable.
2944	*
2945	* If (idResource == 0), the first resource of
2946	* the specified type is loaded. Otherwise we
2947	* try to find the resource of the specified
2948	* type _and_ ID.
2949	*
2950	* If NO_ERROR is returned, *ppbResData receives
2951	* a new buffer with the raw resource data, and
2952	* *pcbResData receives the size of that buffer.
2953	* The caller must then free() that buffer.
2954	*
2955	* This code will properly unpack compressed
2956	* pages in the executable so the returned
2957	* data is always unpacked and can be used
2958	* directly.
2959	*
2960	* Otherwise this returns:
2961	*
2962	* -- ERROR_INVALID_EXE_SIGNATURE: pExec is not
2963	* LX format.
2964	*
2965	* -- ERROR_NO_DATA: resource not found.
2966	*
2967	* -- ERROR_NOT_ENOUGH_MEMORY
2968	*
2969	* plus the error codes from exehReadLXPage.
2970	*
2971	*@@added V0.9.16 (2001-12-08) [umoeller]
2972	*@@changed V0.9.16 (2002-01-05) [umoeller]: largely rewritten to handle non-first icons properly
2973	*/
2974
2975	APIRET exehLoadLXResource(PEXECUTABLE pExec, // in: executable from exehOpen
2976	ULONG ulType, // in: RT_* type (e.g. RT_POINTER)
2977	ULONG idResource, // in: resource ID or 0 for first
2978	PBYTE *ppbResData, // out: resource data (to be free()'d)
2979	PULONG pcbResData) // out: size of resource data (ptr can be NULL)
2980	{
2981	APIRET arc = NO_ERROR;
2982	ULONG cResources = 0;
2983
2984	ULONG ulNewHeaderOfs = 0; // V0.9.12 (2001-05-03) [umoeller]
2985
2986	PLXHEADER pLXHeader;
2987
2988	*ppbResData = 0;
2989
2990	/* _Pmpf((__FUNCTION__ " %s: ulType = %d, idResource %d",
2991	pExec->pFile->pszFilename,
2992	ulType, idResource)); */
2993
2994	if (!(pLXHeader = pExec->pLXHeader))
2995	return ERROR_INVALID_EXE_SIGNATURE;
2996
2997	if (pExec->pDosExeHeader)
2998	// executable has DOS stub: V0.9.12 (2001-05-03) [umoeller]
2999	ulNewHeaderOfs = pExec->pDosExeHeader->ulNewHeaderOfs;
3000
3001	if (!(cResources = pLXHeader->ulResTblCnt))
3002	// no resources at all:
3003	return ERROR_NO_DATA;
3004
3005	if (!pExec->fLXMapsLoaded)
3006	arc = exehLoadLXMaps(pExec);
3007
3008	if (!arc)
3009	{
3010	// alright, we're in:
3011
3012	// run thru the resources
3013	PXFILE pFile = pExec->pFile;
3014	BOOL fPtrFound = FALSE;
3015
3016	ULONG i;
3017	for (i = 0;
3018	i < cResources;
3019	i++)
3020	{
3021	// ptr to resource table entry
3022	RESOURCETABLEENTRY *pRsEntry = &pExec->pRsTbl[i];
3023
3024	// check resource type and ID
3025	if ( (pRsEntry->type == ulType)
3026	&& ( (idResource == 0)
3027	\|\| (idResource == pRsEntry->name)
3028	)
3029	)
3030	{
3031	// hooray, found it: that was the easy part...
3032	// finding the actual resource data isn't that
3033	// trivial:
3034
3035	// first find the object that the resource
3036	// resides in, but check the bounds
3037	if (pRsEntry->obj - 1 >= pLXHeader->ulObjCount)
3038	{
3039	// _Pmpf(("pRsEntry->obj %d is too large", pRsEntry->obj));
3040	arc = ERROR_INVALID_SEGMENT_NUMBER; // 180
3041	}
3042	else
3043	{
3044	// get the object table entry from the index
3045	OBJECTTABLEENTRY *pObjTblEntry = &pExec->pObjTbl[pRsEntry->obj - 1];
3046
3047	// get the object page table index for the
3048	// first resource entry in this object; to
3049	// this index we will need to add something
3050	// which depends on pRsEntry->offset
3051	ULONG ulObjPageTblIndex = pObjTblEntry->o32_pagemap;
3052
3053	ULONG ulPageSize = pLXHeader->ulPageSize;
3054
3055	// if this resource has specified an
3056	// offset into the object, this offset
3057	// specifies the offset in the uncompressed
3058	// data of the whole object:
3059	// for example:
3060	// res 0 ofs 0 cb 9808
3061	// res 1 ofs 9808 cb 3344
3062	// res 2 ofs 13152 cb ...
3063	// and so on.
3064	// So what we need to do is read in the page
3065	// where the resource offset points into (which
3066	// might be somewhere in the middle):
3067	ULONG ulFirstPage = pRsEntry->offset
3068	/ ulPageSize;
3069
3070	// get the offset of the resource data into
3071	// that first page:
3072	ULONG ulResOffsetInFirstPage = pRsEntry->offset % ulPageSize;
3073
3074	ULONG ulLastPage = (pRsEntry->offset + pRsEntry->cb - 1)
3075	/ ulPageSize;
3076
3077	// and we need as many pages as the resource occupies:
3078	ULONG cPages = ulLastPage - ulFirstPage + 1;
3079
3080	ULONG cbAlloc = 0;
3081
3082	// now allocate temporary buffers
3083	PBYTE pabCompressed = NULL,
3084	pabUncompressed = NULL;
3085
3086	// 4096 bytes for each page that is read in
3087	// plus 4 extra bytes to terminate for decompression
3088	if (!(pabCompressed = (PBYTE)malloc(ulPageSize + 4)))
3089	arc = ERROR_NOT_ENOUGH_MEMORY;
3090	// 4096 * cPages for the data that is composed from that
3091	else if (!(arc = doshAllocArray(cPages,
3092	ulPageSize,
3093	&pabUncompressed,
3094	&cbAlloc)))
3095	{
3096	// current pointer into pabUncompressed
3097	PBYTE pbCurrent = pabUncompressed;
3098
3099	ULONG ul,
3100	ulPageThis;
3101
3102	/* _Pmpf((" found RT_POINTER %d, size %d, resofs %d",
3103	pRsEntry->name,
3104	pRsEntry->cb,
3105	pRsEntry->offset));
3106	_Pmpf((" ulFirstPage %d, ulResOffsetInFirstPage %d, cPages %d",
3107	ulFirstPage, ulResOffsetInFirstPage, cPages)); */
3108
3109	ulPageThis = ulObjPageTblIndex + ulFirstPage;
3110
3111	// now go for each page:
3112	for (ul = 0;
3113	(ul < cPages) && (!arc);
3114	ul++, ulPageThis++)
3115	{
3116	if (!(arc = exehReadLXPage(pExec,
3117	ulPageThis,
3118	pLXHeader->ulDataPagesOfs,
3119	pabCompressed,
3120	pbCurrent)))
3121	{
3122	// got the data:
3123	// advance target buffer pointer for
3124	// next page
3125	pbCurrent += ulPageSize;
3126
3127	// make sure we don't write too far away
3128	if (pbCurrent > pabUncompressed + cbAlloc)
3129	arc = ERROR_BAD_FORMAT;
3130	}
3131	} // end for
3132
3133	// ok, now we got all the pages that do contain
3134	// data for this resource:
3135
3136	if (!arc)
3137	{
3138	// allocate a new buffer for caller
3139	if (!(*ppbResData = (PBYTE)malloc(pRsEntry->cb)))
3140	arc = ERROR_NOT_ENOUGH_MEMORY;
3141	else
3142	{
3143	// copy into that buffer from the offset
3144	// into the first page and the data from
3145	// the subsequent pages too
3146	memcpy(*ppbResData,
3147	pabUncompressed + ulResOffsetInFirstPage,
3148	pRsEntry->cb);
3149
3150	if (pcbResData)
3151	*pcbResData = pRsEntry->cb;
3152	}
3153
3154	fPtrFound = TRUE;
3155	}
3156
3157	FREE(pabUncompressed);
3158	FREE(pabCompressed);
3159	}
3160	}
3161	}
3162
3163	if (fPtrFound \|\| arc)
3164	break;
3165
3166	} // end for
3167
3168	if ((!fPtrFound) && (!arc))
3169	arc = ERROR_NO_DATA;
3170	}
3171
3172	// _Pmpf((__FUNCTION__ ": returning %d", arc));
3173
3174	return arc;
3175	}
3176
3177	/*
3178	*@@ exehLoadOS2NEMaps:
3179	* loads the the two main OS/2 NE maps into the
3180	* given EXECUTABLE structure.
3181	*
3182	* This loads:
3183	*
3184	* 1) the OS/2 NE resource table;
3185	*
3186	* 2) the OS/2 NE segment table.
3187	*
3188	* Note that this is not automatically called
3189	* by exehOpen to save time, since the NE
3190	* maps are not needed for all the other exe
3191	* functions. However, this does get called
3192	* from exehLoadOS2NEResource if needed.
3193	*
3194	* This returns:
3195	*
3196	* -- NO_ERROR: both maps were loaded,
3197	* and pExec->fOS2NEMapsLoaded was set to TRUE.
3198	*
3199	* -- ERROR_INVALID_PARAMETER
3200	*
3201	* -- ERROR_INVALID_EXE_SIGNATURE: pExec does
3202	* not specify an NE executable, or the OS
3203	* flag is != OS/2. This func does not work
3204	* for Win16 executables.
3205	*
3206	* -- ERROR_NO_DATA: at least one of the structs
3207	* does not exist.
3208	*
3209	* -- ERROR_NOT_ENOUGH_MEMORY
3210	*
3211	* plus the error codes of doshReadAt.
3212	*
3213	* Call exehFreeNEMaps to clean up explicitly, but
3214	* that func automatically gets called by exehClose.
3215	*
3216	*@@added V0.9.16 (2001-12-08) [umoeller]
3217	*/
3218
3219	APIRET exehLoadOS2NEMaps(PEXECUTABLE pExec)
3220	{
3221	APIRET arc;
3222
3223	PNEHEADER pNEHeader;
3224
3225	if (!pExec)
3226	arc = ERROR_INVALID_PARAMETER;
3227	else if (pExec->fOS2NEMapsLoaded)
3228	// already loaded:
3229	arc = NO_ERROR;
3230	else if ( (pExec->ulExeFormat != EXEFORMAT_NE)
3231	\|\| (pExec->ulOS != EXEOS_OS2)
3232	\|\| (!(pNEHeader = pExec->pNEHeader))
3233	)
3234	arc = ERROR_INVALID_EXE_SIGNATURE;
3235	else
3236	{
3237	PXFILE pFile = pExec->pFile;
3238	ULONG ulNewHeaderOfs = 0;
3239	ULONG cb;
3240
3241	if (pExec->pDosExeHeader)
3242	// executable has DOS stub: V0.9.12 (2001-05-03) [umoeller]
3243	ulNewHeaderOfs = pExec->pDosExeHeader->ulNewHeaderOfs;
3244
3245	// resource table
3246	if ( (!(arc = doshAllocArray(pNEHeader->usResSegmCount,
3247	sizeof(OS2NERESTBLENTRY),
3248	(PBYTE*)&pExec->paOS2NEResTblEntry,
3249	&cb)))
3250	&& (!(arc = doshReadAt(pFile,
3251	pNEHeader->usResTblOfs
3252	+ ulNewHeaderOfs,
3253	&cb,
3254	(PBYTE)pExec->paOS2NEResTblEntry,
3255	DRFL_FAILIFLESS)))
3256	)
3257	{
3258	// resource segments
3259	if ( (!(arc = doshAllocArray(pNEHeader->usResSegmCount,
3260	sizeof(OS2NESEGMENT),
3261	(PBYTE*)&pExec->paOS2NESegments,
3262	&cb)))
3263	&& (!(arc = doshReadAt(pFile,
3264	pNEHeader->usResTblOfs
3265	+ ulNewHeaderOfs
3266	- cb,
3267	&cb,
3268	(PBYTE)pExec->paOS2NESegments,
3269	DRFL_FAILIFLESS)))
3270	)
3271	{
3272	}
3273	}
3274
3275	if (!arc)
3276	pExec->fOS2NEMapsLoaded = TRUE;
3277	else
3278	exehFreeNEMaps(pExec);
3279	}
3280
3281	return arc;
3282	}
3283
3284	/*
3285	*@@ exehFreeNEMaps:
3286	* frees data allocated by exehLoadOS2NEMaps.
3287	* Gets called automatically by exehClose.
3288	*
3289	*@@added V0.9.16 (2001-12-08) [umoeller]
3290	*/
3291
3292	VOID exehFreeNEMaps(PEXECUTABLE pExec)
3293	{
3294	FREE(pExec->paOS2NEResTblEntry);
3295	FREE(pExec->paOS2NESegments);
3296	pExec->fOS2NEMapsLoaded = FALSE;
3297	}
3298
3299	/*
3300	*@@ exehLoadOS2NEResource:
3301	* attempts to load the data of the resource
3302	* with the specified type and id from an OS/2
3303	* NE executable.
3304	*
3305	* Note that NE executables with resources in
3306	* OS/2 format are very, very rare. The
3307	* only OS/2 NE executables with resources I
3308	* could find at this point were in an old 1.3
3309	* Toolkit, but with them, this code works.
3310	*
3311	* If (idResource == 0), the first resource of
3312	* the specified type is loaded. Otherwise we
3313	* try to find the resource of the specified
3314	* type _and_ ID.
3315	*
3316	* If NO_ERROR is returned, *ppbResData receives
3317	* a new buffer with the raw resource data, and
3318	* *pcbResData receives the size of that buffer.
3319	* The caller must then free() that buffer.
3320	*
3321	* Since NE doesn't support packing, the data is
3322	* unpacked always and can be used directly.
3323	*
3324	* Otherwise this returns:
3325	*
3326	* -- ERROR_INVALID_EXE_SIGNATURE: pExec is not
3327	* NE or not OS/2. This func does not work
3328	* for Win16 executables.
3329	*
3330	* -- ERROR_NO_DATA: resource not found.
3331	*
3332	* -- ERROR_BAD_FORMAT: cannot handle resource format.
3333	*
3334	*@@added V0.9.16 (2001-12-08) [umoeller]
3335	*/
3336
3337	APIRET exehLoadOS2NEResource(PEXECUTABLE pExec, // in: executable from exehOpen
3338	ULONG ulType, // in: RT_* type (e.g. RT_POINTER)
3339	ULONG idResource, // in: resource ID or 0 for first
3340	PBYTE *ppbResData, // out: resource data (to be free()'d)
3341	PULONG pcbResData) // out: size of resource data (ptr can be NULL)
3342	{
3343	APIRET arc = NO_ERROR;
3344	ULONG cResources = 0;
3345
3346	ULONG ulNewHeaderOfs = 0; // V0.9.12 (2001-05-03) [umoeller]
3347
3348	PNEHEADER pNEHeader;
3349
3350	if (!(pNEHeader = pExec->pNEHeader))
3351	return ERROR_INVALID_EXE_SIGNATURE;
3352
3353	if (pExec->pDosExeHeader)
3354	// executable has DOS stub: V0.9.12 (2001-05-03) [umoeller]
3355	ulNewHeaderOfs = pExec->pDosExeHeader->ulNewHeaderOfs;
3356
3357	// _Pmpf((__FUNCTION__ ": entering, checking %d resources", pNEHeader->usResSegmCount));
3358
3359	if (!(cResources = pNEHeader->usResSegmCount))
3360	// no resources at all:
3361	return ERROR_NO_DATA;
3362
3363	if (!pExec->fOS2NEMapsLoaded)
3364	arc = exehLoadOS2NEMaps(pExec);
3365
3366	if (!arc)
3367	{
3368	// alright, we're in:
3369	PXFILE pFile = pExec->pFile;
3370
3371	// run thru the resources
3372	BOOL fPtrFound = FALSE;
3373
3374	ULONG i;
3375	POS2NERESTBLENTRY pResTblEntryThis = pExec->paOS2NEResTblEntry;
3376	POS2NESEGMENT pSegThis = pExec->paOS2NESegments;
3377	for (i = 0;
3378	i < cResources;
3379	i++, pResTblEntryThis++, pSegThis++)
3380	{
3381	// check resource type and ID
3382	if ( (pResTblEntryThis->usType == ulType)
3383	&& ( (idResource == 0)
3384	\|\| (idResource == pResTblEntryThis->usID)
3385	)
3386	)
3387	{
3388	// hooray, we found the resource...
3389
3390	// look up the corresponding segment
3391
3392	ULONG ulOffset = ( (ULONG)pSegThis->ns_sector
3393	<< pNEHeader->usLogicalSectShift
3394	);
3395
3396	ULONG cb = pSegThis->ns_cbseg; // resource size
3397	PBYTE pb;
3398	if (!(*ppbResData = (PBYTE)malloc(cb)))
3399	arc = ERROR_NOT_ENOUGH_MEMORY;
3400	else
3401	{
3402	if (!(arc = doshReadAt(pFile,
3403	ulOffset,
3404	&cb,
3405	*ppbResData,
3406	DRFL_FAILIFLESS)))
3407	{
3408	if (pcbResData)
3409	*pcbResData = cb;
3410	fPtrFound = TRUE;
3411	}
3412	else
3413	// error reading:
3414	free(*ppbResData);
3415	}
3416	}
3417
3418	if (fPtrFound \|\| arc)
3419	break;
3420
3421	} // end for
3422
3423	if ((!fPtrFound) && (!arc))
3424	arc = ERROR_NO_DATA;
3425	}
3426	// else
3427	// _Pmpf(("exehLoadOS2NEMaps returned %d"));
3428
3429	return arc;
3430	}
3431
3432	/*
3433	*@@ exehClose:
3434	* this closes an executable opened with exehOpen.
3435	* Always call this function if NO_ERROR was returned by
3436	* exehOpen.
3437	*
3438	* This automaticall calls exehFreeLXMaps and
3439	* exehFreeNEMaps.
3440	*
3441	*@@added V0.9.0 [umoeller]
3442	*@@changed V0.9.16 (2001-12-08) [umoeller]: fixed memory leaks
3443	*@@changed V0.9.16 (2001-12-08) [umoeller]: changed prototype to null the pExec ptr
3444	*/
3445
3446	APIRET exehClose(PEXECUTABLE *ppExec)
3447	{
3448	APIRET arc = NO_ERROR;
3449	PEXECUTABLE pExec;
3450	if ( (ppExec)
3451	&& (pExec = *ppExec)
3452	)
3453	{
3454	char **papsz[] =
3455	{
3456	(char**)&pExec->pDosExeHeader,
3457	(char**)&pExec->pNEHeader,
3458	(char**)&pExec->pLXHeader,
3459	(char**)&pExec->pPEHeader,
3460
3461	&pExec->pszDescription,
3462	&pExec->pszVendor,
3463	&pExec->pszVersion,
3464	&pExec->pszInfo,
3465
3466	&pExec->pszBuildDateTime,
3467	&pExec->pszBuildMachine,
3468	&pExec->pszASD,
3469	&pExec->pszLanguage,
3470	&pExec->pszCountry,
3471	&pExec->pszRevision,
3472	&pExec->pszUnknown,
3473	&pExec->pszFixpak
3474	};
3475	ULONG ul;
3476
3477	exehFreeLXMaps(pExec);
3478	exehFreeNEMaps(pExec);
3479
3480	// fixed the memory leaks with the missing fields,
3481	// turned this into a loop
3482	for (ul = 0;
3483	ul < sizeof(papsz) / sizeof(papsz[0]);
3484	ul++)
3485	{
3486	PSZ pThis;
3487	if (pThis = *papsz[ul])
3488	{
3489	free(pThis);
3490	*papsz[ul] = NULL;
3491	}
3492	}
3493
3494	doshClose(&pExec->pFile);
3495
3496	free(pExec);
3497	*ppExec = NULL;
3498	}
3499	else
3500	arc = ERROR_INVALID_PARAMETER;
3501
3502	return arc;
3503	}
3504
3505

Note: See TracBrowser for help on using the repository browser.

Download in other formats: