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Treat missing MSI tables as empty.

This commit is contained in:
Mike McCormack 2003-10-28 21:49:06 +00:00 committed by Alexandre Julliard
parent f0831227d0
commit 367462798a
1 changed files with 40 additions and 37 deletions
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77
dlls/msi/table.c
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@ -152,26 +152,22 @@ static BOOL decode_streamname(LPWSTR in, LPWSTR out)
}
#endif
UINT read_table_from_storage(IStorage *stg, LPCWSTR name, MSITABLE **ptable)
static BOOL read_stream_data( IStorage *stg, LPWSTR stname,
USHORT **pdata, UINT *psz )
{
WCHAR buffer[0x20];
HRESULT r;
IStream *stm = NULL;
STATSTG stat;
UINT ret = ERROR_FUNCTION_FAILED;
VOID *data;
ULONG sz, count;
MSITABLE *t;
IStream *stm = NULL;
STATSTG stat;
encode_streamname(TRUE, name, buffer);
TRACE("%s -> %s\n",debugstr_w(name),debugstr_w(buffer));
r = IStorage_OpenStream(stg, buffer, NULL, STGM_READ | STGM_SHARE_EXCLUSIVE, 0, &stm);
r = IStorage_OpenStream(stg, stname, NULL,
STGM_READ | STGM_SHARE_EXCLUSIVE, 0, &stm);
if( FAILED( r ) )
{
ERR("open stream failed r = %08lx!\n",r);
return r;
WARN("open stream failed r = %08lx - empty table?\n",r);
return ret;
}
r = IStream_Stat(stm, &stat, STATFLAG_NONAME );
@ -192,47 +188,54 @@ UINT read_table_from_storage(IStorage *stg, LPCWSTR name, MSITABLE **ptable)
if( !data )
{
ERR("couldn't allocate memory r=%08lx!\n",r);
ret = ERROR_NOT_ENOUGH_MEMORY;
goto end;
}
r = IStream_Read(stm, data, sz, &count );
if( FAILED( r ) )
if( FAILED( r ) || ( count != sz ) )
{
HeapFree( GetProcessHeap(), 0, data );
ERR("read stream failed r = %08lx!\n",r);
goto end;
}
t = HeapAlloc( GetProcessHeap(), 0, sizeof (MSITABLE) + lstrlenW(name)*sizeof (WCHAR) );
if( !t )
{
HeapFree( GetProcessHeap(), 0, data );
ERR("malloc failed!\n");
goto end;
}
if( count == sz )
{
ret = ERROR_SUCCESS;
t->size = sz;
t->data = data;
lstrcpyW( t->name, name );
t->ref_count = 1;
*ptable = t;
}
else
{
HeapFree( GetProcessHeap(), 0, data );
ERR("Count != sz\n");
}
*pdata = data;
*psz = sz;
ret = ERROR_SUCCESS;
end:
if( stm )
IStream_Release( stm );
IStream_Release( stm );
return ret;
}
UINT read_table_from_storage(IStorage *stg, LPCWSTR name, MSITABLE **ptable)
{
WCHAR buffer[0x20];
MSITABLE *t;
TRACE("%s -> %s\n",debugstr_w(name),debugstr_w(buffer));
/* non-existing tables should be interpretted as empty tables */
t = HeapAlloc( GetProcessHeap(), 0,
sizeof (MSITABLE) + lstrlenW(name)*sizeof (WCHAR) );
if( !t )
return ERROR_NOT_ENOUGH_MEMORY;
t->size = 0;
t->data = NULL;
lstrcpyW( t->name, name );
t->ref_count = 1;
*ptable = t;
/* if we can't read the table, just assume that it's empty */
encode_streamname(TRUE, name, buffer);
read_stream_data( stg, buffer, &t->data, &t->size );
return ERROR_SUCCESS;
}
/* add this table to the list of cached tables in the database */
void add_table(MSIDATABASE *db, MSITABLE *table)
{