WebKitTools/DumpRenderTree/win/MD5.cpp
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     1 /*
       
     2  * Copyright (C) 2007 Apple, Inc. All rights reserved.
       
     3  *
       
     4  * Redistribution and use in source and binary forms, with or without
       
     5  * modification, are permitted provided that the following conditions
       
     6  * are met:
       
     7  *
       
     8  * 1.  Redistributions of source code must retain the above copyright
       
     9  *     notice, this list of conditions and the following disclaimer.
       
    10  * 2.  Redistributions in binary form must reproduce the above copyright
       
    11  *     notice, this list of conditions and the following disclaimer in the
       
    12  *     documentation and/or other materials provided with the distribution.
       
    13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
       
    14  *     its contributors may be used to endorse or promote products derived
       
    15  *     from this software without specific prior written permission.
       
    16  *
       
    17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
       
    18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
       
    19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
       
    20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
       
    21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
       
    22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
       
    23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
       
    24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
       
    25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
       
    26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
       
    27  */
       
    28 
       
    29 #include "config.h"
       
    30 #include "MD5.h"
       
    31 
       
    32 #include <windows.h>
       
    33 
       
    34 typedef void (WINAPI*initPtr)(MD5_CTX*);
       
    35 typedef void (WINAPI*updatePtr)(MD5_CTX*, unsigned char*, unsigned);
       
    36 typedef void (WINAPI*finalPtr)(MD5_CTX*);
       
    37 
       
    38 static HMODULE cryptDLL()
       
    39 {
       
    40     static HMODULE module = LoadLibraryW(L"Cryptdll.dll");
       
    41     return module;
       
    42 }
       
    43 
       
    44 static initPtr init()
       
    45 {
       
    46     static initPtr ptr = reinterpret_cast<initPtr>(GetProcAddress(cryptDLL(), "MD5Init"));
       
    47     return ptr;
       
    48 }
       
    49 
       
    50 static updatePtr update()
       
    51 {
       
    52     static updatePtr ptr = reinterpret_cast<updatePtr>(GetProcAddress(cryptDLL(), "MD5Update"));
       
    53     return ptr;
       
    54 }
       
    55 
       
    56 static finalPtr final()
       
    57 {
       
    58     static finalPtr ptr = reinterpret_cast<finalPtr>(GetProcAddress(cryptDLL(), "MD5Final"));
       
    59     return ptr;
       
    60 }
       
    61 
       
    62 void MD5_Init(MD5_CTX* context)
       
    63 {
       
    64     init()(context);
       
    65 }
       
    66 
       
    67 void MD5_Update(MD5_CTX* context, unsigned char* input, unsigned length)
       
    68 {
       
    69     update()(context, input, length);
       
    70 }
       
    71 
       
    72 void MD5_Final(unsigned char hash[16], MD5_CTX* context)
       
    73 {
       
    74     final()(context);
       
    75 
       
    76     for (int i = 0; i < 16; ++i)
       
    77         hash[i] = context->digest[i];
       
    78 }