/*
 * Oleaut32 hash functions
 *
 * Copyright 1999 Corel Corporation
 *           2001 Jon Griffiths
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * FIXME: Not all locales are supported yet.
 */
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "winnls.h"
#include "ole2.h"
#include "olectl.h"
#include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(ole);

static const unsigned char Lookup405[128 * 3] = {
 /* Common */
 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C,
 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19,
 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26,
 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x00, 0x30, 0x31, 0x32, 0x33,
 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, 0x40,
 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D,
 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A,
 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, 0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54,
 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F,

 /* Windows */
 0x7F, 0x7F, 0x82, 0x7F, 0x84, 0x85, 0x86, 0x87, 0x7F, 0x89, 0x53, 0x8B, 0x53,
 0x54, 0x5A, 0x5A, 0x7F, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x96, 0x7F, 0x99,
 0x53, 0x9B, 0x53, 0x54, 0x5A, 0x5A, 0xA0, 0x7F, 0xA2, 0x4C, 0xA4, 0x41, 0xA6,
 0xA7, 0xA8, 0xA9, 0x53, 0xAB, 0xAC, 0x96, 0xAE, 0x5A, 0xB0, 0xB1, 0xB2, 0x4C,
 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0x41, 0x53, 0xBB, 0x4C, 0xBD, 0x4C, 0x5A, 0x52,
 0x41, 0x41, 0x41, 0x41, 0x4C, 0x43, 0x43, 0x43, 0x45, 0x45, 0x45, 0x45, 0x49,
 0x49, 0x44, 0xD0, 0x4E, 0x4E, 0x4F, 0x4F, 0x4F, 0x4F, 0xD7, 0x52, 0x55, 0x55,
 0x55, 0x55, 0x59, 0x54, 0xDF, 0x52, 0x41, 0x41, 0x41, 0x41, 0x4C, 0x43, 0x43,
 0x43, 0x45, 0x45, 0x45, 0x45, 0x49, 0x49, 0x44, 0xD0, 0x4E, 0x4E, 0x4F, 0x4F,
 0x4F, 0x4F, 0xF7, 0x52, 0x55, 0x55, 0x55, 0x55, 0x59, 0x54, 0xFF,

 /* Mac */
 0x41, 0x41, 0x41, 0x45, 0x41, 0x4F, 0x55, 0x41, 0x41, 0x43, 0x41, 0x43, 0x43,
 0x43, 0x45, 0x5A, 0x5A, 0x44, 0x49, 0x44, 0x45, 0x45, 0x45, 0x4F, 0x45, 0x4F,
 0x4F, 0x4F, 0x55, 0x45, 0x45, 0x55, 0xA0, 0xA1, 0x45, 0xA3, 0xA4, 0xA5, 0xA6,
 0xA7, 0xA8, 0xA9, 0xAA, 0x45, 0xAC, 0xAD, 0x47, 0x49, 0x49, 0x49, 0xB2, 0xB3,
 0x49, 0x4B, 0xB6, 0xB7, 0x4C, 0x4C, 0x4C, 0x4C, 0x4C, 0x4C, 0x4C, 0x4E, 0x4E,
 0x4E, 0xC2, 0xC3, 0x4E, 0x4E, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0x4E, 0x4F, 0x4F,
 0x4F, 0x4F, 0xD0, 0xD0, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0x4F, 0x52, 0x52,
 0x52, 0xDC, 0xDD, 0x52, 0x52, 0x52, 0x53, 0xE2, 0xE3, 0x53, 0x53, 0x53, 0x41,
 0x54, 0x54, 0x49, 0x5A, 0x5A, 0x55, 0x4F, 0x4F, 0x55, 0x55, 0x55, 0x55, 0x55,
 0x55, 0x55, 0x55, 0x59, 0x59, 0x4B, 0x5A, 0x4C, 0x4C, 0x47, 0xFF
};

static const unsigned char Lookup409[128 * 3] = {
 /* Common */
 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C,
 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19,
 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26,
 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x00, 0x30, 0x31, 0x32, 0x33,
 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, 0x40,
 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D,
 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x56, 0x58, 0x55, 0x5A,
 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, 0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54,
 0x55, 0x56, 0x56, 0x58, 0x55, 0x5A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F,

 /* Windows */
 0x7F, 0x7F, 0x82, 0x46, 0x84, 0x85, 0x86, 0x87, 0x7F, 0x89, 0x53, 0x8B, 0x8C,
 0x7F, 0x7F, 0x7F, 0x7F, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x96, 0x98, 0x99,
 0x53, 0x9B, 0x8C, 0x7F, 0x7F, 0x55, 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6,
 0xA7, 0xA8, 0xA9, 0x41, 0xAB, 0xAC, 0x96, 0xAE, 0xAF, 0xB0, 0xB1, 0x32, 0x33,
 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0x31, 0x4F, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF, 0x41,
 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x43, 0x45, 0x45, 0x45, 0x45, 0x49, 0x49,
 0x49, 0x49, 0x44, 0x4E, 0x4F, 0x4F, 0x4F, 0x4F, 0x4F, 0xD7, 0x4F, 0x55, 0x55,
 0x55, 0x55, 0x55, 0xDE, 0xDF, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x43,
 0x45, 0x45, 0x45, 0x45, 0x49, 0x49, 0x49, 0x49, 0x44, 0x4E, 0x4F, 0x4F, 0x4F,
 0x4F, 0x4F, 0xF7, 0x4F, 0x55, 0x55, 0x55, 0x55, 0x55, 0xDE, 0x55,

 /* Mac */
 0x41, 0x41, 0x43, 0x45, 0x4E, 0x4F, 0x55, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
 0x43, 0x45, 0x45, 0x45, 0x45, 0x49, 0x49, 0x49, 0x49, 0x4E, 0x4F, 0x4F, 0x4F,
 0x4F, 0x4F, 0x55, 0x55, 0x55, 0x55, 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6,
 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0x41, 0x4F, 0xB0, 0xB1, 0xB2, 0xB3,
 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0x41, 0x4F, 0xBD, 0x41, 0x4F, 0xC0,
 0xC1, 0xC2, 0xC3, 0x46, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0x41, 0x41, 0x4F,
 0xCE, 0xCE, 0xD0, 0xD0, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0x55, 0x55, 0xDA,
 0xDB, 0xDC, 0xDD, 0x3F, 0x3F, 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0x41, 0x45, 0x41,
 0x45, 0x45, 0x49, 0x49, 0x49, 0x49, 0x4F, 0x4F, 0x3F, 0x4F, 0x55, 0x55, 0x55,
 0x49, 0x7F, 0xF7, 0x7F, 0xF9, 0xFA, 0xFB, 0x3F, 0xFD, 0xFE, 0x7F
};

static const unsigned char Lookup419[128 * 3] = {
 /* Common */
 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C,
 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19,
 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26,
 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x00, 0x30, 0x31, 0x32, 0x33,
 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, 0x40,
 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D,
 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A,
 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, 0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54,
 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F,

 /* Windows */
 0x7F, 0x7F, 0x82, 0x46, 0x84, 0x85, 0x86, 0x87, 0x7F, 0x89, 0x53, 0x8B, 0x8C,
 0x7F, 0x7F, 0x7F, 0x7F, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x96, 0x98, 0x99,
 0x53, 0x9B, 0x8C, 0x7F, 0x7F, 0x59, 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6,
 0xA7, 0xA8, 0xA9, 0x41, 0xAB, 0xAC, 0x96, 0xAE, 0xAF, 0xB0, 0xB1, 0x32, 0x33,
 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0x31, 0x4F, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF, 0x41,
 0x41, 0x41, 0x41, 0x41, 0x41, 0xC6, 0x43, 0x45, 0x45, 0x45, 0x45, 0x49, 0x49,
 0x49, 0x49, 0xD0, 0x4E, 0x4F, 0x4F, 0x4F, 0x4F, 0x4F, 0xD7, 0x4F, 0x55, 0x55,
 0x55, 0x55, 0x59, 0xDE, 0xDF, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0xC6, 0x43,
 0x45, 0x45, 0x45, 0x45, 0x49, 0x49, 0x49, 0x49, 0xD0, 0x4E, 0x4F, 0x4F, 0x4F,
 0x4F, 0x4F, 0xF7, 0x4F, 0x55, 0x55, 0x55, 0x55, 0x59, 0xDE, 0x59,

 /* Mac */
 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C,
 0x8D, 0x8E, 0x8F, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99,
 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F, 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6,
 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAB, 0xAD, 0xAE, 0xAE, 0xB0, 0xB1, 0xB2, 0xB3,
 0xA7, 0xB5, 0xB6, 0xB7, 0xB8, 0xB8, 0xBA, 0xBA, 0xBC, 0xBC, 0xBE, 0xBE, 0xB7,
 0xC1, 0xC2, 0xC3, 0x46, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCB, 0xCD,
 0xCD, 0xC1, 0xD0, 0xD0, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD8, 0xDA,
 0xDA, 0xDC, 0xDD, 0xDD, 0x9F, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x90, 0x91, 0x92, 0x93, 0x94,
 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F
};

static const unsigned char Lookup814[128 * 3] = {
 /* Common */
 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C,
 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19,
 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26,
 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33,
 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, 0x40,
 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D,
 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A,
 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, 0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54,
 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x7B, 0x7C, 0x7D, 0x7E, 0x00,

 /* Windows */
 0x00, 0x00, 0x82, 0x46, 0x84, 0x85, 0x86, 0x87, 0x00, 0x89, 0x53, 0x8B, 0x8C,
 0x00, 0x00, 0x00, 0x00, 0x91, 0x92, 0x93, 0x94, 0x95, 0x2D, 0x2D, 0x98, 0x99,
 0x53, 0x9B, 0x8C, 0x00, 0x00, 0x59, 0x09, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6,
 0xA7, 0xA8, 0xA9, 0x41, 0xAB, 0xAC, 0x2D, 0xAE, 0xAF, 0xB0, 0xB1, 0x32, 0x33,
 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0x31, 0x4F, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF, 0x41,
 0x41, 0x41, 0x41, 0xC4, 0xC5, 0xC4, 0x43, 0x45, 0x45, 0x45, 0x45, 0x49, 0x49,
 0x49, 0x49, 0x44, 0x4E, 0x4F, 0x4F, 0x4F, 0x4F, 0xD6, 0xD7, 0xD6, 0x55, 0x55,
 0x55, 0x59, 0x59, 0xDE, 0xDF, 0x41, 0x41, 0x41, 0x41, 0xC4, 0xC5, 0xC4, 0x43,
 0x45, 0x45, 0x45, 0x45, 0x49, 0x49, 0x49, 0x49, 0x44, 0x4E, 0x4F, 0x4F, 0x4F,
 0x4F, 0xD6, 0xF7, 0xD6, 0x55, 0x55, 0x55, 0x59, 0x59, 0xDE, 0x59,

 /* Mac */
 0x80, 0x81, 0x43, 0x45, 0x4E, 0x85, 0x59, 0x41, 0x41, 0x41, 0x80, 0x41, 0x81,
 0x43, 0x45, 0x45, 0x45, 0x45, 0x49, 0x49, 0x49, 0x49, 0x4E, 0x4F, 0x4F, 0x4F,
 0x85, 0x4F, 0x55, 0x55, 0x55, 0x59, 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6,
 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0x80, 0x85, 0xB0, 0xB1, 0xB2, 0xB3,
 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0x41, 0x4F, 0xBD, 0x80, 0x85, 0xC0,
 0xC1, 0xC2, 0xC3, 0x46, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0x09, 0x41, 0x41, 0x4F,
 0xCE, 0xCE, 0x2D, 0x2D, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0x59, 0x59, 0xDA,
 0xDB, 0xDC, 0xDD, 0x3F, 0x3F, 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0x41, 0x45, 0x41,
 0x45, 0x45, 0x49, 0x49, 0x49, 0x49, 0x4F, 0x4F, 0x3F, 0x4F, 0x55, 0x55, 0x55,
 0x49, 0x00, 0xF7, 0x00, 0xF9, 0xFA, 0xFB, 0x3F, 0xFD, 0xFE, 0x00
};

/***********************************************************************
 *		LHashValOfNameSysA (OLEAUT32.166)
 *
 * Produce a two part hash: The high word is based on skind and lcid,
 * the low word is based on a repeated string hash of skind/str.
 */
ULONG WINAPI LHashValOfNameSysA( SYSKIND skind, LCID lcid, LPCSTR lpStr)
{
  ULONG nOffset, nMask = skind == SYS_MAC ? 1 : 0;
  ULONG nHiWord, nLoWord = 0x0deadbee;
  const unsigned char *str = (const unsigned char *)lpStr, *pnLookup = NULL;

  if (!str)
    return 0;

  switch (lcid)
  {
  case 0x405:
    nOffset = 32;
    pnLookup = Lookup405;
    break;
  case 0x409:
    nOffset = 16;
    pnLookup = Lookup409;
    break;
  case 0x419:
    nOffset = 48;
    pnLookup = Lookup419;
    break;
  case 0x814:
    nOffset = 176;
    pnLookup = Lookup814;
    break;
  default:
    ERR("No hash for LCID %x, returning '0x00424242', please report\n", (unsigned)lcid);
    return 0x00424242;
  }

  nHiWord = (nOffset | nMask) << 16;

  while (*str)
  {
    ULONG newLoWord = 0, i;

    /* Cumulative prime multiplication (*37) with modulo 2^32 wrap-around */
    for (i = 0; i < 37; i++)
      newLoWord += nLoWord;

    nLoWord = newLoWord + pnLookup[*str > 0x7f && nMask ? *str + 0x80 : *str];
    str++;
  }
  /* Constrain to a prime modulo and sizeof(WORD) */
  nLoWord = (nLoWord % 65599) & 0xffff;

  return nHiWord | nLoWord;
}

/***********************************************************************
 *		LHashValOfNameSys (OLEAUT32.165)
 */
ULONG WINAPI LHashValOfNameSys( SYSKIND skind, LCID lcid, LPCOLESTR str)
{
    LPSTR	strA;
    ULONG	res;
    INT len;

    if (!str) return 0;
    len = WideCharToMultiByte( CP_ACP, 0, str, -1, NULL, 0, NULL, NULL );
    strA = HeapAlloc( GetProcessHeap(), 0, len );
    WideCharToMultiByte( CP_ACP, 0, str, -1, strA, len, NULL, NULL );
    res = LHashValOfNameSysA(skind, lcid, strA);
    HeapFree(GetProcessHeap(), 0, strA);
    return res;
}