calmd5.cpp

来自「包含客户和服务器的升级程序,在linux下可以运行的.」· C++ 代码 · 共 34 行

/*
 * Copyright (C) 2006, Binary Ma
 * Licence: GNU GPL 1991 - version 2
 * Bug report: [e-mail]
*/

#include <unistd.h>
#include "calmd5.h"
#include "mdc.h"
#include "binary.h"

const char* calculate_md5( const char* file )
{
    if( NULL == file )
        return NULL;

    static mdmethod mdc( MDC_MD5 );
    const char* md5 = "0";
    if( 0 == isreg( file ) )
    {
        md5 = mdc.sum_file( file );
    }
   	else
   	if( 0 == islink( file ) )
   	{
        char buflink[1024];
        bzero( buflink, sizeof( buflink ) );
   	    if( -1 != readlink( file, buflink, sizeof( buflink ) - 1 ) )
   	        md5 = mdc.sum_data( buflink, strlen( buflink ) );
   	}

   	return md5;
}