// security.cpp

#include "stdafx.h"
#include "security.h"
#include "../util/md5.hpp"

namespace mongo {

    extern "C" int do_md5_test(void);

    boost::thread_specific_ptr<AuthenticationInfo> authInfo;

    Security::Security(){
#if defined(__linux__)
        devrandom = new ifstream("/dev/urandom", ios::binary|ios::in);
        massert( "can't open dev/urandom", devrandom->is_open() );
#elif defined(_WIN32)
        srand(curTimeMicros());
#else
        srandomdev();
#endif
        assert( sizeof(nonce) == 8 );
        
        if ( do_md5_test() )
            massert("md5 unit test fails", false);
    }

    nonce Security::getNonce(){
        nonce n;
#if defined(__linux__)
        devrandom->read((char*)&n, sizeof(n));
        massert("devrandom failed", !devrandom->fail());
#elif defined(_WIN32)
        n = ((unsigned long long)rand())<<32 | rand();
#else
        n = random();
#endif
        return n;
    }

    Security security;

} // namespace mongo


#include "commands.h"
#include "jsobj.h"

namespace mongo {

    class CmdGetNonce : public Command {
    public:
        virtual bool logTheOp() {
            return false;
        }
        virtual bool slaveOk() {
            return true;
        }
        CmdGetNonce() : Command("getnonce") {}
        bool run(const char *ns, BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool fromRepl) {
            result.append("nonce", (double) security.getNonce());
            return true;
        }
    } cmdGetNonce;

    class CmdAuthenticate : public Command {
    public:
        virtual bool logTheOp() {
            return false;
        }
        virtual bool slaveOk() {
            return true;
        }
        CmdAuthenticate() : Command("authenticate") {}
        bool run(const char *ns, BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool fromRepl) {
            return false;
        }
    } cmdAuthenticate;


} // namespace mongo