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Sweden-Number/dlls/msi/table.c

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/*
* Implementation of the Microsoft Installer (msi.dll)
*
* Copyright 2002-2005 Mike McCormack for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#define COBJMACROS
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "wine/debug.h"
#include "msi.h"
#include "msiquery.h"
#include "objbase.h"
#include "objidl.h"
#include "msipriv.h"
#include "winnls.h"
#include "query.h"
WINE_DEFAULT_DEBUG_CHANNEL(msidb);
#define MSITABLE_HASH_TABLE_SIZE 37
typedef struct tagMSICOLUMNHASHENTRY
{
struct tagMSICOLUMNHASHENTRY *next;
UINT value;
UINT row;
} MSICOLUMNHASHENTRY;
typedef struct tagMSICOLUMNINFO
{
LPCWSTR tablename;
UINT number;
LPCWSTR colname;
UINT type;
UINT offset;
MSICOLUMNHASHENTRY **hash_table;
} MSICOLUMNINFO;
struct tagMSITABLE
{
USHORT **data;
UINT row_count;
struct list entry;
WCHAR name[1];
};
typedef struct tagMSITRANSFORM {
struct list entry;
IStorage *stg;
} MSITRANSFORM;
static const WCHAR szStringData[] = {
'_','S','t','r','i','n','g','D','a','t','a',0 };
static const WCHAR szStringPool[] = {
'_','S','t','r','i','n','g','P','o','o','l',0 };
#define MAX_STREAM_NAME 0x1f
static UINT table_get_column_info( MSIDATABASE *db, LPCWSTR name,
MSICOLUMNINFO **pcols, UINT *pcount );
static UINT get_tablecolumns( MSIDATABASE *db,
LPCWSTR szTableName, MSICOLUMNINFO *colinfo, UINT *sz);
static void msi_free_colinfo( MSICOLUMNINFO *colinfo, UINT count );
static inline UINT bytes_per_column( const MSICOLUMNINFO *col )
{
if( col->type & MSITYPE_STRING )
return 2;
if( (col->type & 0xff) > 4 )
ERR("Invalid column size!\n");
return col->type & 0xff;
}
static int utf2mime(int x)
{
if( (x>='0') && (x<='9') )
return x-'0';
if( (x>='A') && (x<='Z') )
return x-'A'+10;
if( (x>='a') && (x<='z') )
return x-'a'+10+26;
if( x=='.' )
return 10+26+26;
if( x=='_' )
return 10+26+26+1;
return -1;
}
static LPWSTR encode_streamname(BOOL bTable, LPCWSTR in)
{
DWORD count = MAX_STREAM_NAME;
DWORD ch, next;
LPWSTR out, p;
if( !bTable )
count = lstrlenW( in )+2;
out = msi_alloc( count*sizeof(WCHAR) );
p = out;
if( bTable )
{
*p++ = 0x4840;
count --;
}
while( count -- )
{
ch = *in++;
if( !ch )
{
*p = ch;
return out;
}
if( ( ch < 0x80 ) && ( utf2mime(ch) >= 0 ) )
{
ch = utf2mime(ch) + 0x4800;
next = *in;
if( next && (next<0x80) )
{
next = utf2mime(next);
if( next >= 0 )
{
next += 0x3ffffc0;
ch += (next<<6);
in++;
}
}
}
*p++ = ch;
}
ERR("Failed to encode stream name (%s)\n",debugstr_w(in));
msi_free( out );
return NULL;
}
static int mime2utf(int x)
{
if( x<10 )
return x + '0';
if( x<(10+26))
return x - 10 + 'A';
if( x<(10+26+26))
return x - 10 - 26 + 'a';
if( x == (10+26+26) )
return '.';
return '_';
}
static BOOL decode_streamname(LPWSTR in, LPWSTR out)
{
WCHAR ch;
DWORD count = 0;
while ( (ch = *in++) )
{
if( (ch >= 0x3800 ) && (ch < 0x4840 ) )
{
if( ch >= 0x4800 )
ch = mime2utf(ch-0x4800);
else
{
ch -= 0x3800;
*out++ = mime2utf(ch&0x3f);
count++;
ch = mime2utf((ch>>6)&0x3f);
}
}
*out++ = ch;
count++;
}
*out = 0;
return count;
}
void enum_stream_names( IStorage *stg )
{
IEnumSTATSTG *stgenum = NULL;
HRESULT r;
STATSTG stat;
ULONG n, count;
WCHAR name[0x40];
r = IStorage_EnumElements( stg, 0, NULL, 0, &stgenum );
if( FAILED( r ) )
return;
n = 0;
while( 1 )
{
count = 0;
r = IEnumSTATSTG_Next( stgenum, 1, &stat, &count );
if( FAILED( r ) || !count )
break;
decode_streamname( stat.pwcsName, name );
TRACE("stream %2d -> %s %s\n", n,
debugstr_w(stat.pwcsName), debugstr_w(name) );
n++;
}
IEnumSTATSTG_Release( stgenum );
}
static UINT read_stream_data( IStorage *stg, LPCWSTR stname,
USHORT **pdata, UINT *psz )
{
HRESULT r;
UINT ret = ERROR_FUNCTION_FAILED;
VOID *data;
ULONG sz, count;
IStream *stm = NULL;
STATSTG stat;
LPWSTR encname;
encname = encode_streamname(TRUE, stname);
TRACE("%s -> %s\n",debugstr_w(stname),debugstr_w(encname));
r = IStorage_OpenStream(stg, encname, NULL,
STGM_READ | STGM_SHARE_EXCLUSIVE, 0, &stm);
msi_free( encname );
if( FAILED( r ) )
{
WARN("open stream failed r = %08x - empty table?\n", r);
return ret;
}
r = IStream_Stat(stm, &stat, STATFLAG_NONAME );
if( FAILED( r ) )
{
WARN("open stream failed r = %08x!\n", r);
goto end;
}
if( stat.cbSize.QuadPart >> 32 )
{
WARN("Too big!\n");
goto end;
}
sz = stat.cbSize.QuadPart;
data = msi_alloc( sz );
if( !data )
{
WARN("couldn't allocate memory r=%08x!\n", r);
ret = ERROR_NOT_ENOUGH_MEMORY;
goto end;
}
r = IStream_Read(stm, data, sz, &count );
if( FAILED( r ) || ( count != sz ) )
{
msi_free( data );
WARN("read stream failed r = %08x!\n", r);
goto end;
}
*pdata = data;
*psz = sz;
ret = ERROR_SUCCESS;
end:
IStream_Release( stm );
return ret;
}
UINT db_get_raw_stream( MSIDATABASE *db, LPCWSTR stname, IStream **stm )
{
LPWSTR encname;
HRESULT r;
encname = encode_streamname(FALSE, stname);
TRACE("%s -> %s\n",debugstr_w(stname),debugstr_w(encname));
r = IStorage_OpenStream(db->storage, encname, NULL,
STGM_READ | STGM_SHARE_EXCLUSIVE, 0, stm);
if( FAILED( r ) )
{
MSITRANSFORM *transform;
LIST_FOR_EACH_ENTRY( transform, &db->transforms, MSITRANSFORM, entry )
{
TRACE("looking for %s in transform storage\n", debugstr_w(stname) );
r = IStorage_OpenStream( transform->stg, encname, NULL,
STGM_READ | STGM_SHARE_EXCLUSIVE, 0, stm );
if (SUCCEEDED(r))
break;
}
}
msi_free( encname );
return SUCCEEDED(r) ? ERROR_SUCCESS : ERROR_FUNCTION_FAILED;
}
UINT read_raw_stream_data( MSIDATABASE *db, LPCWSTR stname,
USHORT **pdata, UINT *psz )
{
HRESULT r;
UINT ret = ERROR_FUNCTION_FAILED;
VOID *data;
ULONG sz, count;
IStream *stm = NULL;
STATSTG stat;
r = db_get_raw_stream( db, stname, &stm );
if( r != ERROR_SUCCESS)
return ret;
r = IStream_Stat(stm, &stat, STATFLAG_NONAME );
if( FAILED( r ) )
{
WARN("open stream failed r = %08x!\n", r);
goto end;
}
if( stat.cbSize.QuadPart >> 32 )
{
WARN("Too big!\n");
goto end;
}
sz = stat.cbSize.QuadPart;
data = msi_alloc( sz );
if( !data )
{
WARN("couldn't allocate memory r=%08x!\n", r);
ret = ERROR_NOT_ENOUGH_MEMORY;
goto end;
}
r = IStream_Read(stm, data, sz, &count );
if( FAILED( r ) || ( count != sz ) )
{
msi_free( data );
WARN("read stream failed r = %08x!\n", r);
goto end;
}
*pdata = data;
*psz = sz;
ret = ERROR_SUCCESS;
end:
IStream_Release( stm );
return ret;
}
static UINT write_stream_data( IStorage *stg, LPCWSTR stname,
LPVOID data, UINT sz )
{
HRESULT r;
UINT ret = ERROR_FUNCTION_FAILED;
ULONG count;
IStream *stm = NULL;
ULARGE_INTEGER size;
LARGE_INTEGER pos;
LPWSTR encname;
encname = encode_streamname(TRUE, stname );
r = IStorage_OpenStream( stg, encname, NULL,
STGM_WRITE | STGM_SHARE_EXCLUSIVE, 0, &stm);
if( FAILED(r) )
{
r = IStorage_CreateStream( stg, encname,
STGM_WRITE | STGM_SHARE_EXCLUSIVE, 0, 0, &stm);
}
msi_free( encname );
if( FAILED( r ) )
{
WARN("open stream failed r = %08x\n", r);
return ret;
}
size.QuadPart = sz;
r = IStream_SetSize( stm, size );
if( FAILED( r ) )
{
WARN("Failed to SetSize\n");
goto end;
}
pos.QuadPart = 0;
r = IStream_Seek( stm, pos, STREAM_SEEK_SET, NULL );
if( FAILED( r ) )
{
WARN("Failed to Seek\n");
goto end;
}
r = IStream_Write(stm, data, sz, &count );
if( FAILED( r ) || ( count != sz ) )
{
WARN("Failed to Write\n");
goto end;
}
ret = ERROR_SUCCESS;
end:
IStream_Release( stm );
return ret;
}
static void free_table( MSITABLE *table )
{
int i;
for( i=0; i<table->row_count; i++ )
msi_free( table->data[i] );
msi_free( table->data );
msi_free( table );
}
static UINT msi_table_get_row_size( const MSICOLUMNINFO *cols, UINT count )
{
const MSICOLUMNINFO *last_col = &cols[count-1];
if (!count)
return 0;
return last_col->offset + bytes_per_column( last_col );
}
/* add this table to the list of cached tables in the database */
static MSITABLE *read_table_from_storage( IStorage *stg, LPCWSTR name,
const MSICOLUMNINFO *cols, UINT num_cols )
{
MSITABLE *t;
USHORT *rawdata = NULL;
UINT rawsize = 0, i, j, row_size = 0;
TRACE("%s\n",debugstr_w(name));
/* nonexistent tables should be interpreted as empty tables */
t = msi_alloc( sizeof (MSITABLE) + lstrlenW(name)*sizeof (WCHAR) );
if( !t )
return t;
row_size = msi_table_get_row_size( cols, num_cols );
t->row_count = 0;
t->data = NULL;
lstrcpyW( t->name, name );
/* if we can't read the table, just assume that it's empty */
read_stream_data( stg, name, &rawdata, &rawsize );
if( !rawdata )
return t;
TRACE("Read %d bytes\n", rawsize );
if( rawsize % row_size )
{
WARN("Table size is invalid %d/%d\n", rawsize, row_size );
goto err;
}
t->row_count = rawsize / row_size;
t->data = msi_alloc_zero( t->row_count * sizeof (USHORT*) );
if( !t->data )
goto err;
/* transpose all the data */
TRACE("Transposing data from %d rows\n", t->row_count );
for( i=0; i<t->row_count; i++ )
{
t->data[i] = msi_alloc( row_size );
if( !t->data[i] )
goto err;
for( j=0; j<num_cols; j++ )
{
UINT ofs = cols[j].offset/2;
UINT n = bytes_per_column( &cols[j] );
switch( n )
{
case 2:
t->data[i][ofs] = rawdata[ofs*t->row_count + i ];
break;
case 4:
t->data[i][ofs] = rawdata[ofs*t->row_count + i*2 ];
t->data[i][ofs+1] = rawdata[ofs*t->row_count + i*2 + 1];
break;
default:
ERR("oops - unknown column width %d\n", n);
goto err;
}
}
}
msi_free( rawdata );
return t;
err:
msi_free( rawdata );
free_table( t );
return NULL;
}
void free_cached_tables( MSIDATABASE *db )
{
while( !list_empty( &db->tables ) )
{
MSITABLE *t = LIST_ENTRY( list_head( &db->tables ), MSITABLE, entry );
list_remove( &t->entry );
free_table( t );
}
}
static MSITABLE *find_cached_table( MSIDATABASE *db, LPCWSTR name )
{
MSITABLE *t;
LIST_FOR_EACH_ENTRY( t, &db->tables, MSITABLE, entry )
if( !lstrcmpW( name, t->name ) )
return t;
return NULL;
}
static UINT table_get_column_info( MSIDATABASE *db, LPCWSTR name, MSICOLUMNINFO **pcols, UINT *pcount )
{
UINT r, column_count = 0;
MSICOLUMNINFO *columns;
/* get the number of columns in this table */
column_count = 0;
r = get_tablecolumns( db, name, NULL, &column_count );
if( r != ERROR_SUCCESS )
return r;
/* if there's no columns, there's no table */
if( column_count == 0 )
return ERROR_INVALID_PARAMETER;
TRACE("Table %s found\n", debugstr_w(name) );
columns = msi_alloc( column_count*sizeof (MSICOLUMNINFO) );
if( !columns )
return ERROR_FUNCTION_FAILED;
r = get_tablecolumns( db, name, columns, &column_count );
if( r != ERROR_SUCCESS )
{
msi_free( columns );
return ERROR_FUNCTION_FAILED;
}
*pcols = columns;
*pcount = column_count;
return r;
}
static MSITABLE *get_table( MSIDATABASE *db, LPCWSTR name,
const MSICOLUMNINFO *cols, UINT num_cols )
{
MSITABLE *table;
/* first, see if the table is cached */
table = find_cached_table( db, name );
if( table )
return table;
table = read_table_from_storage( db->storage, name, cols, num_cols );
if( table )
list_add_head( &db->tables, &table->entry );
return table;
}
static UINT save_table( MSIDATABASE *db, MSITABLE *t )
{
USHORT *rawdata = NULL, *p;
UINT rawsize, r, i, j, row_size, num_cols = 0;
MSICOLUMNINFO *cols = NULL;
TRACE("Saving %s\n", debugstr_w( t->name ) );
r = table_get_column_info( db, t->name, &cols, &num_cols );
if( r != ERROR_SUCCESS )
return r;
row_size = msi_table_get_row_size( cols, num_cols );
rawsize = t->row_count * row_size;
rawdata = msi_alloc_zero( rawsize );
if( !rawdata )
{
r = ERROR_NOT_ENOUGH_MEMORY;
goto err;
}
p = rawdata;
for( i=0; i<num_cols; i++ )
{
for( j=0; j<t->row_count; j++ )
{
UINT offset = cols[i].offset;
*p++ = t->data[j][offset/2];
if( 4 == bytes_per_column( &cols[i] ) )
*p++ = t->data[j][offset/2+1];
}
}
TRACE("writing %d bytes\n", rawsize);
r = write_stream_data( db->storage, t->name, rawdata, rawsize );
err:
msi_free_colinfo( cols, num_cols );
msi_free( cols );
msi_free( rawdata );
return r;
}
HRESULT init_string_table( IStorage *stg )
{
HRESULT r;
USHORT zero[2] = { 0, 0 };
ULONG count = 0;
IStream *stm = NULL;
LPWSTR encname;
encname = encode_streamname(TRUE, szStringPool );
/* create the StringPool stream... add the zero string to it*/
r = IStorage_CreateStream( stg, encname,
STGM_WRITE | STGM_SHARE_EXCLUSIVE, 0, 0, &stm);
msi_free( encname );
if( r )
{
TRACE("Failed\n");
return r;
}
r = IStream_Write(stm, zero, sizeof zero, &count );
IStream_Release( stm );
if( FAILED( r ) || ( count != sizeof zero ) )
{
TRACE("Failed\n");
return E_FAIL;
}
/* create the StringData stream... make it zero length */
encname = encode_streamname(TRUE, szStringData );
r = IStorage_CreateStream( stg, encname,
STGM_WRITE | STGM_SHARE_EXCLUSIVE, 0, 0, &stm);
msi_free( encname );
if( r )
{
TRACE("Failed\n");
return E_FAIL;
}
IStream_Release( stm );
return r;
}
string_table *load_string_table( IStorage *stg )
{
string_table *st = NULL;
CHAR *data = NULL;
USHORT *pool = NULL;
UINT r, datasize = 0, poolsize = 0, codepage;
DWORD i, count, offset, len, n, refs;
r = read_stream_data( stg, szStringPool, &pool, &poolsize );
if( r != ERROR_SUCCESS)
goto end;
r = read_stream_data( stg, szStringData, (USHORT**)&data, &datasize );
if( r != ERROR_SUCCESS)
goto end;
count = poolsize/4;
if( poolsize > 4 )
codepage = pool[0] | ( pool[1] << 16 );
else
codepage = CP_ACP;
st = msi_init_stringtable( count, codepage );
offset = 0;
n = 1;
i = 1;
while( i<count )
{
/* the string reference count is always the second word */
refs = pool[i*2+1];
/* empty entries have two zeros, still have a string id */
if (pool[i*2] == 0 && refs == 0)
{
i++;
n++;
continue;
}
/*
* If a string is over 64k, the previous string entry is made null
* and its the high word of the length is inserted in the null string's
* reference count field.
*/
if( pool[i*2] == 0)
{
len = (pool[i*2+3] << 16) + pool[i*2+2];
i += 2;
}
else
{
len = pool[i*2];
i += 1;
}
if ( (offset + len) > datasize )
{
ERR("string table corrupt?\n");
break;
}
r = msi_addstring( st, n, data+offset, len, refs );
if( r != n )
ERR("Failed to add string %d\n", n );
n++;
offset += len;
}
if ( datasize != offset )
ERR("string table load failed! (%08x != %08x), please report\n", datasize, offset );
TRACE("Loaded %d strings\n", count);
end:
msi_free( pool );
msi_free( data );
return st;
}
static UINT save_string_table( MSIDATABASE *db )
{
UINT i, count, datasize = 0, poolsize = 0, sz, used, r, codepage, n;
UINT ret = ERROR_FUNCTION_FAILED;
CHAR *data = NULL;
USHORT *pool = NULL;
TRACE("\n");
/* construct the new table in memory first */
count = msi_string_totalsize( db->strings, &datasize, &poolsize );
TRACE("%u %u %u\n", count, datasize, poolsize );
pool = msi_alloc( poolsize );
if( ! pool )
{
WARN("Failed to alloc pool %d bytes\n", poolsize );
goto err;
}
data = msi_alloc( datasize );
if( ! data )
{
WARN("Failed to alloc data %d bytes\n", poolsize );
goto err;
}
used = 0;
codepage = msi_string_get_codepage( db->strings );
pool[0]=codepage&0xffff;
pool[1]=(codepage>>16);
n = 1;
for( i=1; i<count; i++ )
{
sz = datasize - used;
r = msi_id2stringA( db->strings, i, data+used, &sz );
if( r != ERROR_SUCCESS )
{
ERR("failed to fetch string\n");
sz = 0;
}
if( sz && (sz < (datasize - used ) ) )
sz--;
pool[ n*2 + 1 ] = msi_id_refcount( db->strings, i );
if (sz < 0x10000)
{
pool[ n*2 ] = sz;
n++;
}
else
{
pool[ n*2 ] = 0;
pool[ n*2 + 2 ] = sz&0xffff;
pool[ n*2 + 3 ] = (sz>>16);
n += 2;
}
used += sz;
if( used > datasize )
{
ERR("oops overran %d >= %d\n", used, datasize);
goto err;
}
}
if( used != datasize )
{
ERR("oops used %d != datasize %d\n", used, datasize);
goto err;
}
/* write the streams */
r = write_stream_data( db->storage, szStringData, data, datasize );
TRACE("Wrote StringData r=%08x\n", r);
if( r )
goto err;
r = write_stream_data( db->storage, szStringPool, pool, poolsize );
TRACE("Wrote StringPool r=%08x\n", r);
if( r )
goto err;
ret = ERROR_SUCCESS;
err:
msi_free( data );
msi_free( pool );
return ret;
}
/* information for default tables */
static const WCHAR szTables[] = { '_','T','a','b','l','e','s',0 };
static const WCHAR szTable[] = { 'T','a','b','l','e',0 };
static const WCHAR szName[] = { 'N','a','m','e',0 };
static const WCHAR szColumns[] = { '_','C','o','l','u','m','n','s',0 };
static const WCHAR szColumn[] = { 'C','o','l','u','m','n',0 };
static const WCHAR szNumber[] = { 'N','u','m','b','e','r',0 };
static const WCHAR szType[] = { 'T','y','p','e',0 };
static const MSICOLUMNINFO _Columns_cols[4] = {
{ szColumns, 1, szTable, MSITYPE_VALID | MSITYPE_STRING | 64, 0 },
{ szColumns, 2, szNumber, MSITYPE_VALID | 2, 2 },
{ szColumns, 3, szName, MSITYPE_VALID | MSITYPE_STRING | 64, 4 },
{ szColumns, 4, szType, MSITYPE_VALID | 2, 6 },
};
static const MSICOLUMNINFO _Tables_cols[1] = {
{ szTables, 1, szName, MSITYPE_VALID | MSITYPE_STRING | 64, 0 },
};
static UINT get_defaulttablecolumns( LPCWSTR name, MSICOLUMNINFO *colinfo, UINT *sz)
{
const MSICOLUMNINFO *p;
DWORD i, n;
TRACE("%s\n", debugstr_w(name));
if (!lstrcmpW( name, szTables ))
{
p = _Tables_cols;
n = 1;
}
else if (!lstrcmpW( name, szColumns ))
{
p = _Columns_cols;
n = 4;
}
else
return ERROR_FUNCTION_FAILED;
/* duplicate the string data so we can free it in msi_free_colinfo */
for (i=0; i<n; i++)
{
if (colinfo && (i < *sz) )
{
memcpy( &colinfo[i], &p[i], sizeof(MSICOLUMNINFO) );
colinfo[i].tablename = strdupW( p[i].tablename );
colinfo[i].colname = strdupW( p[i].colname );
}
if( colinfo && (i >= *sz) )
break;
}
*sz = n;
return ERROR_SUCCESS;
}
static void msi_free_colinfo( MSICOLUMNINFO *colinfo, UINT count )
{
UINT i;
for( i=0; i<count; i++ )
{
msi_free( (LPWSTR) colinfo[i].tablename );
msi_free( (LPWSTR) colinfo[i].colname );
msi_free( colinfo[i].hash_table );
}
}
LPWSTR MSI_makestring( MSIDATABASE *db, UINT stringid)
{
return strdupW(msi_string_lookup_id( db->strings, stringid ));
}
static UINT get_tablecolumns( MSIDATABASE *db,
LPCWSTR szTableName, MSICOLUMNINFO *colinfo, UINT *sz)
{
UINT r, i, n=0, table_id, count, maxcount = *sz;
MSITABLE *table = NULL;
/* first check if there is a default table with that name */
r = get_defaulttablecolumns( szTableName, colinfo, sz );
if( ( r == ERROR_SUCCESS ) && *sz )
return r;
table = get_table( db, szColumns, _Columns_cols, 4 );
if( !table )
{
ERR("couldn't load _Columns table\n");
return ERROR_FUNCTION_FAILED;
}
/* convert table and column names to IDs from the string table */
r = msi_string2idW( db->strings, szTableName, &table_id );
if( r != ERROR_SUCCESS )
{
WARN("Couldn't find id for %s\n", debugstr_w(szTableName));
return r;
}
TRACE("Table id is %d, row count is %d\n", table_id, table->row_count);
count = table->row_count;
for( i=0; i<count; i++ )
{
if( table->data[ i ][ 0 ] != table_id )
continue;
if( colinfo )
{
UINT id = table->data[ i ] [ 2 ];
colinfo[n].tablename = MSI_makestring( db, table_id );
colinfo[n].number = table->data[ i ][ 1 ] - (1<<15);
colinfo[n].colname = MSI_makestring( db, id );
colinfo[n].type = table->data[ i ] [ 3 ] ^ 0x8000;
colinfo[n].hash_table = NULL;
/* this assumes that columns are in order in the table */
if( n )
colinfo[n].offset = colinfo[n-1].offset
+ bytes_per_column( &colinfo[n-1] );
else
colinfo[n].offset = 0;
TRACE("table %s column %d is [%s] (%d) with type %08x "
"offset %d at row %d\n", debugstr_w(szTableName),
colinfo[n].number, debugstr_w(colinfo[n].colname),
id, colinfo[n].type, colinfo[n].offset, i);
if( n != (colinfo[n].number-1) )
{
ERR("oops. data in the _Columns table isn't in the right "
"order for table %s\n", debugstr_w(szTableName));
return ERROR_FUNCTION_FAILED;
}
}
n++;
if( colinfo && ( n >= maxcount ) )
break;
}
*sz = n;
return ERROR_SUCCESS;
}
/* try to find the table name in the _Tables table */
BOOL TABLE_Exists( MSIDATABASE *db, LPWSTR name )
{
UINT r, table_id = 0, i, count;
MSITABLE *table = NULL;
if( !lstrcmpW( name, szTables ) )
return TRUE;
if( !lstrcmpW( name, szColumns ) )
return TRUE;
r = msi_string2idW( db->strings, name, &table_id );
if( r != ERROR_SUCCESS )
{
TRACE("Couldn't find id for %s\n", debugstr_w(name));
return FALSE;
}
table = get_table( db, szTables, _Tables_cols, 1 );
if( !table )
{
TRACE("table %s not available\n", debugstr_w(szTables));
return FALSE;
}
/* count = table->size/2; */
count = table->row_count;
for( i=0; i<count; i++ )
if( table->data[ i ][ 0 ] == table_id )
break;
if (i!=count)
return TRUE;
TRACE("Searched %d tables, but %d was not found\n", count, table_id );
return FALSE;
}
/* below is the query interface to a table */
typedef struct tagMSITABLEVIEW
{
MSIVIEW view;
MSIDATABASE *db;
MSITABLE *table;
MSICOLUMNINFO *columns;
UINT num_cols;
UINT row_size;
WCHAR name[1];
} MSITABLEVIEW;
static UINT TABLE_fetch_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT *val )
{
MSITABLEVIEW *tv = (MSITABLEVIEW*)view;
UINT offset, num_rows, n;
if( !tv->table )
return ERROR_INVALID_PARAMETER;
if( (col==0) || (col>tv->num_cols) )
return ERROR_INVALID_PARAMETER;
/* how many rows are there ? */
num_rows = tv->table->row_count;
if( row >= num_rows )
return ERROR_NO_MORE_ITEMS;
if( tv->columns[col-1].offset >= tv->row_size )
{
ERR("Stuffed up %d >= %d\n", tv->columns[col-1].offset, tv->row_size );
ERR("%p %p\n", tv, tv->columns );
return ERROR_FUNCTION_FAILED;
}
offset = row + (tv->columns[col-1].offset/2) * num_rows;
n = bytes_per_column( &tv->columns[col-1] );
switch( n )
{
case 4:
offset = tv->columns[col-1].offset/2;
*val = tv->table->data[row][offset] +
(tv->table->data[row][offset + 1] << 16);
break;
case 2:
offset = tv->columns[col-1].offset/2;
*val = tv->table->data[row][offset];
break;
default:
ERR("oops! what is %d bytes per column?\n", n );
return ERROR_FUNCTION_FAILED;
}
/* TRACE("Data [%d][%d] = %d\n", row, col, *val ); */
return ERROR_SUCCESS;
}
/*
* We need a special case for streams, as we need to reference column with
* the name of the stream in the same table, and the table name
* which may not be available at higher levels of the query
*/
static UINT TABLE_fetch_stream( struct tagMSIVIEW *view, UINT row, UINT col, IStream **stm )
{
MSITABLEVIEW *tv = (MSITABLEVIEW*)view;
UINT ival = 0, refcol = 0, r;
LPCWSTR sval;
LPWSTR full_name;
DWORD len;
static const WCHAR szDot[] = { '.', 0 };
if( !view->ops->fetch_int )
return ERROR_INVALID_PARAMETER;
/*
* The column marked with the type stream data seems to have a single number
* which references the column containing the name of the stream data
*
* Fetch the column to reference first.
*/
r = view->ops->fetch_int( view, row, col, &ival );
if( r != ERROR_SUCCESS )
return r;
/* now get the column with the name of the stream */
r = view->ops->fetch_int( view, row, ival, &refcol );
if( r != ERROR_SUCCESS )
return r;
/* lookup the string value from the string table */
sval = msi_string_lookup_id( tv->db->strings, refcol );
if( !sval )
return ERROR_INVALID_PARAMETER;
len = lstrlenW( tv->name ) + 2 + lstrlenW( sval );
full_name = msi_alloc( len*sizeof(WCHAR) );
lstrcpyW( full_name, tv->name );
lstrcatW( full_name, szDot );
lstrcatW( full_name, sval );
r = db_get_raw_stream( tv->db, full_name, stm );
if( r )
ERR("fetching stream %s, error = %d\n",debugstr_w(full_name), r);
msi_free( full_name );
return r;
}
static UINT TABLE_set_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT val )
{
MSITABLEVIEW *tv = (MSITABLEVIEW*)view;
UINT offset, n;
if( !tv->table )
return ERROR_INVALID_PARAMETER;
if( (col==0) || (col>tv->num_cols) )
return ERROR_INVALID_PARAMETER;
if( tv->columns[col-1].offset >= tv->row_size )
{
ERR("Stuffed up %d >= %d\n", tv->columns[col-1].offset, tv->row_size );
ERR("%p %p\n", tv, tv->columns );
return ERROR_FUNCTION_FAILED;
}
n = bytes_per_column( &tv->columns[col-1] );
switch( n )
{
case 4:
offset = tv->columns[col-1].offset/2;
tv->table->data[row][offset] = val & 0xffff;
tv->table->data[row][offset + 1] = (val>>16)&0xffff;
break;
case 2:
offset = tv->columns[col-1].offset/2;
tv->table->data[row][offset] = val;
break;
default:
ERR("oops! what is %d bytes per column?\n", n );
return ERROR_FUNCTION_FAILED;
}
return ERROR_SUCCESS;
}
static UINT table_create_new_row( struct tagMSIVIEW *view, UINT *num )
{
MSITABLEVIEW *tv = (MSITABLEVIEW*)view;
USHORT **p, *row;
UINT sz;
TRACE("%p\n", view);
if( !tv->table )
return ERROR_INVALID_PARAMETER;
row = msi_alloc_zero( tv->row_size );
if( !row )
return ERROR_NOT_ENOUGH_MEMORY;
sz = (tv->table->row_count + 1) * sizeof (UINT*);
if( tv->table->data )
p = msi_realloc( tv->table->data, sz );
else
p = msi_alloc( sz );
if( !p )
{
msi_free( row );
return ERROR_NOT_ENOUGH_MEMORY;
}
tv->table->data = p;
tv->table->data[tv->table->row_count] = row;
*num = tv->table->row_count;
tv->table->row_count++;
return ERROR_SUCCESS;
}
static UINT TABLE_execute( struct tagMSIVIEW *view, MSIRECORD *record )
{
MSITABLEVIEW *tv = (MSITABLEVIEW*)view;
TRACE("%p %p\n", tv, record);
TRACE("There are %d columns\n", tv->num_cols );
tv->table = get_table( tv->db, tv->name, tv->columns, tv->num_cols );
if( !tv->table )
return ERROR_FUNCTION_FAILED;
return ERROR_SUCCESS;
}
static UINT TABLE_close( struct tagMSIVIEW *view )
{
MSITABLEVIEW *tv = (MSITABLEVIEW*)view;
TRACE("%p\n", view );
if( !tv->table )
return ERROR_FUNCTION_FAILED;
tv->table = NULL;
return ERROR_SUCCESS;
}
static UINT TABLE_get_dimensions( struct tagMSIVIEW *view, UINT *rows, UINT *cols)
{
MSITABLEVIEW *tv = (MSITABLEVIEW*)view;
TRACE("%p %p %p\n", view, rows, cols );
if( cols )
*cols = tv->num_cols;
if( rows )
{
if( !tv->table )
return ERROR_INVALID_PARAMETER;
*rows = tv->table->row_count;
}
return ERROR_SUCCESS;
}
static UINT TABLE_get_column_info( struct tagMSIVIEW *view,
UINT n, LPWSTR *name, UINT *type )
{
MSITABLEVIEW *tv = (MSITABLEVIEW*)view;
TRACE("%p %d %p %p\n", tv, n, name, type );
if( ( n == 0 ) || ( n > tv->num_cols ) )
return ERROR_INVALID_PARAMETER;
if( name )
{
*name = strdupW( tv->columns[n-1].colname );
if( !*name )
return ERROR_FUNCTION_FAILED;
}
if( type )
*type = tv->columns[n-1].type;
return ERROR_SUCCESS;
}
static UINT msi_table_find_row( MSITABLEVIEW *tv, MSIRECORD *rec, UINT *row );
static UINT table_validate_new( MSITABLEVIEW *tv, MSIRECORD *rec )
{
UINT r, row, i;
/* check there's no null values where they're not allowed */
for( i = 0; i < tv->num_cols; i++ )
{
if ( tv->columns[i].type & MSITYPE_NULLABLE )
continue;
if ( tv->columns[i].type & MSITYPE_STRING )
{
LPCWSTR str;
str = MSI_RecordGetString( rec, i+1 );
if (str == NULL || str[0] == 0)
return ERROR_INVALID_DATA;
}
else
{
UINT n;
n = MSI_RecordGetInteger( rec, i+1 );
if (n == MSI_NULL_INTEGER)
return ERROR_INVALID_DATA;
}
}
/* check there's no duplicate keys */
r = msi_table_find_row( tv, rec, &row );
if (r == ERROR_SUCCESS)
return ERROR_INVALID_DATA;
return ERROR_SUCCESS;
}
static UINT msi_table_modify_row( MSITABLEVIEW *tv, MSIRECORD *rec,
UINT row, UINT mask )
{
UINT i, val, r = ERROR_SUCCESS;
TRACE("%p %p %u %08x\n", tv, rec, row, mask );
for( i = 0; i < tv->num_cols; i++ )
{
/* set keys or values specified in the mask */
if( (~tv->columns[i].type & MSITYPE_KEY) && (~mask & (1<<i)) )
continue;
if( (tv->columns[i].type & MSITYPE_STRING) &&
! MSITYPE_IS_BINARY(tv->columns[i].type) )
{
const WCHAR *str = MSI_RecordGetString( rec, i+1 );
val = msi_addstringW( tv->db->strings, 0, str, -1, 1 );
}
else
{
val = MSI_RecordGetInteger( rec, i+1 );
if ( 2 == bytes_per_column( &tv->columns[i] ) )
val ^= 0x8000;
else
val ^= 0x80000000;
}
r = TABLE_set_int( &tv->view, row, i+1, val );
if( r )
break;
}
return r;
}
static UINT TABLE_insert_row( struct tagMSIVIEW *view, MSIRECORD *rec )
{
MSITABLEVIEW *tv = (MSITABLEVIEW*)view;
UINT r, row = -1;
TRACE("%p %p\n", tv, rec );
/* check that the key is unique - can we find a matching row? */
r = table_validate_new( tv, rec );
if( r != ERROR_SUCCESS )
return ERROR_FUNCTION_FAILED;
r = table_create_new_row( view, &row );
TRACE("insert_row returned %08x\n", r);
if( r != ERROR_SUCCESS )
return r;
return msi_table_modify_row( tv, rec, row, ~0 );
}
static UINT TABLE_modify( struct tagMSIVIEW *view, MSIMODIFY eModifyMode,
MSIRECORD *rec)
{
MSITABLEVIEW *tv = (MSITABLEVIEW*)view;
UINT r;
TRACE("%p %d %p\n", view, eModifyMode, rec );
if (!tv->table)
{
r = TABLE_execute( view, NULL );
if( r )
return r;
}
switch (eModifyMode)
{
case MSIMODIFY_VALIDATE_NEW:
r = table_validate_new( tv, rec );
break;
case MSIMODIFY_INSERT_TEMPORARY:
r = table_validate_new( tv, rec );
if (r != ERROR_SUCCESS)
break;
r = TABLE_insert_row( view, rec );
break;
case MSIMODIFY_REFRESH:
case MSIMODIFY_INSERT:
case MSIMODIFY_UPDATE:
case MSIMODIFY_ASSIGN:
case MSIMODIFY_REPLACE:
case MSIMODIFY_MERGE:
case MSIMODIFY_DELETE:
case MSIMODIFY_VALIDATE:
case MSIMODIFY_VALIDATE_FIELD:
case MSIMODIFY_VALIDATE_DELETE:
FIXME("%p %d %p - mode not implemented\n", view, eModifyMode, rec );
r = ERROR_CALL_NOT_IMPLEMENTED;
break;
default:
r = ERROR_INVALID_DATA;
}
return r;
}
static UINT TABLE_delete( struct tagMSIVIEW *view )
{
MSITABLEVIEW *tv = (MSITABLEVIEW*)view;
TRACE("%p\n", view );
tv->table = NULL;
if( tv->columns )
{
msi_free_colinfo( tv->columns, tv->num_cols );
msi_free( tv->columns );
}
tv->columns = NULL;
msi_free( tv );
return ERROR_SUCCESS;
}
static UINT TABLE_find_matching_rows( struct tagMSIVIEW *view, UINT col,
UINT val, UINT *row, MSIITERHANDLE *handle )
{
MSITABLEVIEW *tv = (MSITABLEVIEW*)view;
const MSICOLUMNHASHENTRY *entry;
TRACE("%p, %d, %u, %p\n", view, col, val, *handle);
if( !tv->table )
return ERROR_INVALID_PARAMETER;
if( (col==0) || (col > tv->num_cols) )
return ERROR_INVALID_PARAMETER;
if( !tv->columns[col-1].hash_table )
{
UINT i;
UINT num_rows = tv->table->row_count;
MSICOLUMNHASHENTRY **hash_table;
MSICOLUMNHASHENTRY *new_entry;
if( tv->columns[col-1].offset >= tv->row_size )
{
ERR("Stuffed up %d >= %d\n", tv->columns[col-1].offset, tv->row_size );
ERR("%p %p\n", tv, tv->columns );
return ERROR_FUNCTION_FAILED;
}
/* allocate contiguous memory for the table and its entries so we
* don't have to do an expensive cleanup */
hash_table = msi_alloc(MSITABLE_HASH_TABLE_SIZE * sizeof(MSICOLUMNHASHENTRY*) +
num_rows * sizeof(MSICOLUMNHASHENTRY));
if (!hash_table)
return ERROR_OUTOFMEMORY;
memset(hash_table, 0, MSITABLE_HASH_TABLE_SIZE * sizeof(MSICOLUMNHASHENTRY*));
tv->columns[col-1].hash_table = hash_table;
new_entry = (MSICOLUMNHASHENTRY *)(hash_table + MSITABLE_HASH_TABLE_SIZE);
for (i = 0; i < num_rows; i++, new_entry++)
{
UINT row_value, n;
UINT offset = i + (tv->columns[col-1].offset/2) * num_rows;
n = bytes_per_column( &tv->columns[col-1] );
switch( n )
{
case 4:
offset = tv->columns[col-1].offset/2;
row_value = tv->table->data[i][offset] +
(tv->table->data[i][offset + 1] << 16);
break;
case 2:
offset = tv->columns[col-1].offset/2;
row_value = tv->table->data[i][offset];
break;
default:
ERR("oops! what is %d bytes per column?\n", n );
continue;
}
new_entry->next = NULL;
new_entry->value = row_value;
new_entry->row = i;
if (hash_table[row_value % MSITABLE_HASH_TABLE_SIZE])
{
MSICOLUMNHASHENTRY *prev_entry = hash_table[row_value % MSITABLE_HASH_TABLE_SIZE];
while (prev_entry->next)
prev_entry = prev_entry->next;
prev_entry->next = new_entry;
}
else
hash_table[row_value % MSITABLE_HASH_TABLE_SIZE] = new_entry;
}
}
if( !*handle )
entry = tv->columns[col-1].hash_table[val % MSITABLE_HASH_TABLE_SIZE];
else
entry = ((const MSICOLUMNHASHENTRY *)*handle)->next;
while (entry && entry->value != val)
entry = entry->next;
*handle = (MSIITERHANDLE)entry;
if (!entry)
return ERROR_NO_MORE_ITEMS;
*row = entry->row;
return ERROR_SUCCESS;
}
static const MSIVIEWOPS table_ops =
{
TABLE_fetch_int,
TABLE_fetch_stream,
TABLE_set_int,
TABLE_insert_row,
TABLE_execute,
TABLE_close,
TABLE_get_dimensions,
TABLE_get_column_info,
TABLE_modify,
TABLE_delete,
TABLE_find_matching_rows
};
UINT TABLE_CreateView( MSIDATABASE *db, LPCWSTR name, MSIVIEW **view )
{
MSITABLEVIEW *tv ;
UINT r, sz, column_count;
MSICOLUMNINFO *columns;
TRACE("%p %s %p\n", db, debugstr_w(name), view );
/* get the number of columns in this table */
column_count = 0;
r = get_tablecolumns( db, name, NULL, &column_count );
if( r != ERROR_SUCCESS )
return r;
/* if there's no columns, there's no table */
if( column_count == 0 )
return ERROR_INVALID_PARAMETER;
TRACE("Table found\n");
sz = sizeof *tv + lstrlenW(name)*sizeof name[0] ;
tv = msi_alloc_zero( sz );
if( !tv )
return ERROR_FUNCTION_FAILED;
columns = msi_alloc( column_count*sizeof (MSICOLUMNINFO));
if( !columns )
{
msi_free( tv );
return ERROR_FUNCTION_FAILED;
}
r = get_tablecolumns( db, name, columns, &column_count );
if( r != ERROR_SUCCESS )
{
msi_free( columns );
msi_free( tv );
return ERROR_FUNCTION_FAILED;
}
TRACE("Table has %d columns\n", column_count);
/* fill the structure */
tv->view.ops = &table_ops;
tv->db = db;
tv->columns = columns;
tv->num_cols = column_count;
tv->table = NULL;
tv->row_size = msi_table_get_row_size( columns, column_count );
TRACE("%s one row is %d bytes\n", debugstr_w(name), tv->row_size );
*view = (MSIVIEW*) tv;
lstrcpyW( tv->name, name );
return ERROR_SUCCESS;
}
UINT MSI_CommitTables( MSIDATABASE *db )
{
UINT r;
MSITABLE *table = NULL;
TRACE("%p\n",db);
r = save_string_table( db );
if( r != ERROR_SUCCESS )
{
WARN("failed to save string table r=%08x\n",r);
return r;
}
LIST_FOR_EACH_ENTRY( table, &db->tables, MSITABLE, entry )
{
r = save_table( db, table );
if( r != ERROR_SUCCESS )
{
WARN("failed to save table %s (r=%08x)\n",
debugstr_w(table->name), r);
return r;
}
}
/* force everything to reload next time */
free_cached_tables( db );
return ERROR_SUCCESS;
}
MSICONDITION MSI_DatabaseIsTablePersistent( MSIDATABASE *db, LPCWSTR table )
{
if (!table)
return MSICONDITION_ERROR;
return MSICONDITION_FALSE;
}
static MSIRECORD *msi_get_transform_record( MSITABLEVIEW *tv, string_table *st, USHORT *rawdata )
{
UINT i, val, ofs = 0;
USHORT mask = *rawdata++;
MSICOLUMNINFO *columns = tv->columns;
MSIRECORD *rec;
rec = MSI_CreateRecord( tv->num_cols );
if( !rec )
return rec;
TRACE("row -> ");
for( i=0; i<tv->num_cols; i++ )
{
UINT n = bytes_per_column( &columns[i] );
if ( (mask&1) && (i>=(mask>>8)) )
break;
/* all keys must be present */
if ( (~mask&1) && (~columns[i].type & MSITYPE_KEY) && ((1<<i) & ~mask) )
continue;
switch( n )
{
case 2:
val = rawdata[ofs];
if( (columns[i].type & MSITYPE_STRING) &&
! MSITYPE_IS_BINARY(tv->columns[i].type) )
{
LPCWSTR sval = msi_string_lookup_id( st, val );
MSI_RecordSetStringW( rec, i+1, sval );
TRACE("[%s]", debugstr_w(sval));
}
else
{
val ^= 0x8000;
MSI_RecordSetInteger( rec, i+1, val );
TRACE("[0x%04x]", val );
}
break;
case 4:
val = rawdata[ofs] + (rawdata[ofs + 1]<<16);
/* val ^= 0x80000000; */
MSI_RecordSetInteger( rec, i+1, val );
TRACE("[0x%08x]", val );
break;
default:
ERR("oops - unknown column width %d\n", n);
break;
}
ofs += n/2;
}
TRACE("\n");
return rec;
}
static void dump_record( MSIRECORD *rec )
{
UINT i, n;
n = MSI_RecordGetFieldCount( rec );
for( i=1; i<=n; i++ )
{
LPCWSTR sval = MSI_RecordGetString( rec, i );
if( MSI_RecordIsNull( rec, i ) )
TRACE("row -> []\n");
else if( (sval = MSI_RecordGetString( rec, i )) )
TRACE("row -> [%s]\n", debugstr_w(sval));
else
TRACE("row -> [0x%08x]\n", MSI_RecordGetInteger( rec, i ) );
}
}
static void dump_table( string_table *st, USHORT *rawdata, UINT rawsize )
{
LPCWSTR sval;
UINT i;
for( i=0; i<(rawsize/2); i++ )
{
sval = msi_string_lookup_id( st, rawdata[i] );
MESSAGE(" %04x %s\n", rawdata[i], debugstr_w(sval) );
}
}
static UINT* msi_record_to_row( MSITABLEVIEW *tv, MSIRECORD *rec )
{
LPCWSTR str;
UINT i, r, *data;
data = msi_alloc( tv->num_cols *sizeof (UINT) );
for( i=0; i<tv->num_cols; i++ )
{
data[i] = 0;
if ( ~tv->columns[i].type & MSITYPE_KEY )
continue;
/* turn the transform column value into a row value */
if ( ( tv->columns[i].type & MSITYPE_STRING ) &&
! MSITYPE_IS_BINARY(tv->columns[i].type) )
{
str = MSI_RecordGetString( rec, i+1 );
r = msi_string2idW( tv->db->strings, str, &data[i] );
/* if there's no matching string in the string table,
these keys can't match any record, so fail now. */
if( ERROR_SUCCESS != r )
{
msi_free( data );
return NULL;
}
}
else
data[i] = MSI_RecordGetInteger( rec, i+1 );
}
return data;
}
static UINT msi_row_matches( MSITABLEVIEW *tv, UINT row, UINT *data )
{
UINT i, r, x, ret = ERROR_FUNCTION_FAILED;
for( i=0; i<tv->num_cols; i++ )
{
if ( ~tv->columns[i].type & MSITYPE_KEY )
continue;
/* turn the transform column value into a row value */
r = TABLE_fetch_int( &tv->view, row, i+1, &x );
if ( r != ERROR_SUCCESS )
{
ERR("TABLE_fetch_int shouldn't fail here\n");
break;
}
/* if this key matches, move to the next column */
if ( x != data[i] )
{
ret = ERROR_FUNCTION_FAILED;
break;
}
ret = ERROR_SUCCESS;
}
return ret;
}
static UINT msi_table_find_row( MSITABLEVIEW *tv, MSIRECORD *rec, UINT *row )
{
UINT i, r = ERROR_FUNCTION_FAILED, *data;
data = msi_record_to_row( tv, rec );
if( !data )
return r;
for( i=0; i<tv->table->row_count; i++ )
{
r = msi_row_matches( tv, i, data );
if( r == ERROR_SUCCESS )
{
*row = i;
break;
}
}
msi_free( data );
return r;
}
static UINT msi_delete_row( MSITABLEVIEW *tv, UINT row )
{
UINT i;
for( i=1; i<=tv->num_cols; i++ )
tv->view.ops->set_int( &tv->view, row, i, 0 );
return ERROR_SUCCESS;
}
static UINT msi_table_load_transform( MSIDATABASE *db, IStorage *stg,
string_table *st, LPCWSTR name )
{
UINT rawsize = 0;
USHORT *rawdata = NULL;
MSITABLEVIEW *tv = NULL;
UINT r, n, sz, i, mask;
MSIRECORD *rec = NULL;
TRACE("%p %p %p %s\n", db, stg, st, debugstr_w(name) );
/* create a table view */
r = TABLE_CreateView( db, name, (MSIVIEW**) &tv );
if( r != ERROR_SUCCESS )
goto err;
r = tv->view.ops->execute( &tv->view, NULL );
if( r != ERROR_SUCCESS )
goto err;
/* read the transform data */
r = ERROR_FUNCTION_FAILED;
read_stream_data( stg, name, &rawdata, &rawsize );
if( !rawdata || (rawsize < 2) )
{
ERR("odd sized transform for table %s\n", debugstr_w(name));
goto err;
}
TRACE("name = %s columns = %u row_size = %u raw size = %u\n",
debugstr_w(name), tv->num_cols, tv->row_size, rawsize );
/* interpret the data */
r = ERROR_SUCCESS;
for( n=0; n < (rawsize/2); )
{
mask = rawdata[n];
if (mask&1)
{
/*
* if the low bit is set, columns are continuous and
* the number of columns is specified in the high byte
*/
sz = 2 + tv->row_size;
}
else
{
/*
* If the low bit is not set, rowdata[n] is a bitmask.
* Excepting for key fields, which are always present,
* each bit indicates that a field is present in the transform record.
*
* rawdata[n] == 0 is a special case ... only the keys will be present
* and it means that this row should be deleted.
*/
sz = 2;
for( i=0; i<tv->num_cols; i++ )
{
if( (tv->columns[i].type & MSITYPE_KEY) || ((1<<i)&mask))
sz += bytes_per_column( &tv->columns[i] );
}
}
/* check we didn't run of the end of the table */
if ( (n+sz) > rawsize )
{
ERR("borked.\n");
dump_table( st, rawdata, rawsize );
break;
}
rec = msi_get_transform_record( tv, st, &rawdata[n] );
if (rec)
{
UINT row = 0;
r = msi_table_find_row( tv, rec, &row );
if( rawdata[n] & 1)
{
TRACE("insert [%d]: ", row);
TABLE_insert_row( &tv->view, rec );
}
else if( mask & 0xff )
{
TRACE("modify [%d]: ", row);
msi_table_modify_row( tv, rec, row, mask );
}
else
{
TRACE("delete [%d]: ", row);
msi_delete_row( tv, row );
}
if( TRACE_ON(msidb) ) dump_record( rec );
msiobj_release( &rec->hdr );
}
n += sz/2;
}
err:
/* no need to free the table, it's associated with the database */
msi_free( rawdata );
if( tv )
tv->view.ops->delete( &tv->view );
return ERROR_SUCCESS;
}
/*
* msi_table_apply_transform
*
* Enumerate the table transforms in a transform storage and apply each one.
*/
UINT msi_table_apply_transform( MSIDATABASE *db, IStorage *stg )
{
IEnumSTATSTG *stgenum = NULL;
HRESULT r;
STATSTG stat;
ULONG count;
WCHAR name[0x40];
string_table *strings;
UINT ret = ERROR_FUNCTION_FAILED;
TRACE("%p %p\n", db, stg );
strings = load_string_table( stg );
if( !strings )
goto end;
r = IStorage_EnumElements( stg, 0, NULL, 0, &stgenum );
if( FAILED( r ) )
goto end;
ret = ERROR_SUCCESS;
while( r == ERROR_SUCCESS )
{
count = 0;
r = IEnumSTATSTG_Next( stgenum, 1, &stat, &count );
if( FAILED( r ) || !count )
break;
decode_streamname( stat.pwcsName, name );
TRACE("transform contains stream %s\n", debugstr_w(name));
if ( name[0] != 0x4840 )
continue;
if ( !lstrcmpW(name+1, szStringPool ) || !lstrcmpW(name+1, szStringData) )
continue;
ret = msi_table_load_transform( db, stg, strings, name+1 );
}
if ( ret == ERROR_SUCCESS )
{
MSITRANSFORM *t;
t = msi_alloc( sizeof *t );
t->stg = stg;
IStorage_AddRef( stg );
list_add_tail( &db->transforms, &t->entry );
}
end:
if ( stgenum )
IEnumSTATSTG_Release( stgenum );
if ( strings )
msi_destroy_stringtable( strings );
return ret;
}
void msi_free_transforms( MSIDATABASE *db )
{
while( !list_empty( &db->transforms ) )
{
MSITRANSFORM *t = LIST_ENTRY( list_head( &db->transforms ),
MSITRANSFORM, entry );
list_remove( &t->entry );
IStorage_Release( t->stg );
msi_free( t );
}
}
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