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Fixed TLB_Read (can easily get count!=bytesread at the end of the file). 

Fixed TLB_FindTlb (strstr on binary data will not work).
This commit is contained in:
Marcus Meissner 1999-06-07 17:41:37 +00:00 committed by Alexandre Julliard
parent c5ef0cedf9
commit c137ba6ee2
1 changed files with 46 additions and 41 deletions
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87
ole/typelib.c
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@ -522,13 +522,14 @@ DWORD TLB_Read(void *buffer, DWORD count, TLBContext *pcx, long where )
{
DWORD bytesread=0;
if((where!=DO_NOT_SEEK &&
0xffffffff== SetFilePointer((HANDLE)pcx->hFile, where, 0, FILE_BEGIN))||
!ReadFile((HANDLE)pcx->hFile, buffer, count, &bytesread, NULL) ||
count != bytesread){
if (( where != DO_NOT_SEEK &&
(0xffffffff == SetFilePointer( pcx->hFile, where, 0,FILE_BEGIN))
) ||
!ReadFile(pcx->hFile, buffer, count, &bytesread, NULL)
) {
/* FIXME */
ERR( typelib, "read error is 0x%lx reading %ld bytes at 0x%lx\n",
GetLastError(), count, where);
ERR(typelib,"read error is 0x%lx reading %ld bytes at 0x%lx\n",
GetLastError(), count, where);
TLB_abort();
exit(1);
}
@ -983,66 +984,69 @@ long TLB_FindTlb(TLBContext *pcx)
*/
#define TLBBUFSZ 1024
char buff[TLBBUFSZ+1]; /* room for a trailing '\0' */
long ret=0;
long ret=0,found=0;
int count;
char *pChr;
count=TLB_Read(buff, TLBBUFSZ, pcx, 0);
do {
buff[count]='\0';
if((pChr=strstr(buff,TLBMAGIC2))){
ret += pChr-buff;
break;
}
ret+=count;
count=TLB_Read(buff, TLBBUFSZ, pcx, DO_NOT_SEEK);
#define LOOK_FOR_MAGIC(magic) \
count=TLB_Read(buff, TLBBUFSZ, pcx, 0); \
do { \
buff[count]='\0'; \
pChr = buff; \
while (pChr) { \
pChr = memchr(pChr,magic[0],count-(pChr-buff));\
if (pChr) { \
if (!memcmp(pChr,magic,4)) { \
ret+= pChr-buff; \
found = 1; \
break; \
} \
pChr++; \
} \
} \
if (found) break; \
ret+=count; \
count=TLB_Read(buff, TLBBUFSZ, pcx, DO_NOT_SEEK);\
} while(count>0);
LOOK_FOR_MAGIC(TLBMAGIC2);
if(count)
return ret;
/* try again for the other format */
ret=0;
count=TLB_Read(buff, TLBBUFSZ, pcx, 0);
do {
buff[count]='\0';
if((pChr=strstr(buff,TLBMAGIC1))){
ret += pChr-buff;
break;
}
ret+=count;
count=TLB_Read(buff, TLBBUFSZ, pcx, DO_NOT_SEEK);
} while(count>0);
LOOK_FOR_MAGIC(TLBMAGIC1);
if(count)
ERR(ole,"type library format not (yet) implemented\n");
else
ERR(ole,"not type library found in this file\n");
return -1;
}
#undef LOOK_FOR_MAGIC
int TLB_ReadTypeLib(PCHAR file, ITypeLib **ppTypeLib)
{
TLBContext cx;
OFSTRUCT ofStruct;
OFSTRUCT ofStruct;
long oStart,lPSegDir;
TLBLibInfo* pLibInfo=NULL;
TLB2Header tlbHeader;
TLBSegDir tlbSegDir;
if((cx.hFile=(HANDLE)OpenFile(file, &ofStruct, OF_READWRITE))
==(HANDLE)HFILE_ERROR){
ERR( typelib,"cannot open %s error 0x%lx\n",file, GetLastError());
exit(1);
}
if((cx.hFile=OpenFile(file, &ofStruct, OF_READWRITE))==HFILE_ERROR) {
ERR( typelib,"cannot open %s error 0x%lx\n",file, GetLastError());
return E_FAIL;
}
/* get pointer to beginning of typelib data */
if((oStart=TLB_FindTlb(&cx))<0){
if(oStart==-1)
ERR( typelib,"cannot locate typelib in %s\n",file);
else
ERR( typelib,"unsupported typelib format in %s\n",file);
exit(1);
return E_FAIL;
}
cx.oStart=oStart;
if((pLibInfo=HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,
sizeof(TLBLibInfo)))==NULL){
CloseHandle(cx.hFile);
pLibInfo=HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(TLBLibInfo));
if (!pLibInfo){
CloseHandle(cx.hFile);
return E_OUTOFMEMORY;
}
pLibInfo->lpvtbl = &tlbvt;
@ -1060,8 +1064,9 @@ int TLB_ReadTypeLib(PCHAR file, ITypeLib **ppTypeLib)
TLB_Read((void*)&tlbSegDir, sizeof(tlbSegDir), &cx, lPSegDir);
cx.pTblDir=&tlbSegDir;
/* just check two entries */
if(tlbSegDir.pTypeInfoTab.res0c != 0x0F ||
tlbSegDir.pImpInfo.res0c != 0x0F){
if ( tlbSegDir.pTypeInfoTab.res0c != 0x0F ||
tlbSegDir.pImpInfo.res0c != 0x0F
) {
ERR( typelib,"cannot find the table directory, ptr=0x%lx\n",lPSegDir);
}
/* now fill our internal data */