nKrawall Class Reference

base class for authentication, unaware of armagetron network messages More...

#include <nKrawall.h>

Inheritance diagram for nKrawall:

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List of all members.

Public Types
typedef nScrambledPassword	nSalt
Static Public Member Functions
static tString	EncodeScrambledPassword (nScrambledPassword const &scrambled)
static tString	EncodeString (tString const &original)
static void	WriteScrambledPassword (const nScrambledPassword &scrambled, nMessage &m)
static void	ReadScrambledPassword (nMessage &m, nScrambledPassword &scrambled)
static void	WriteScrambledPassword (const nScrambledPassword &scrambled, std::ostream &s)
static void	ReadScrambledPassword (std::istream &s, nScrambledPassword &scrambled)
static void	WriteSalt (const nSalt &salt, nMessage &m)
static void	ReadSalt (nMessage &m, nSalt &salt)
static bool	ArePasswordsEqual (const nScrambledPassword &a, const nScrambledPassword &b)
static void	ScramblePassword (const tString &password, nScrambledPassword &scrambled)
static void	BrokenScramblePassword (const tString &password, nScrambledPassword &scrambled)
static void	ScrambleWithSalt2 (const nScrambledPassword &source, const nSalt &salt, nScrambledPassword &dest)
static void	RandomSalt (nSalt &salt)
Classes
struct	nCheckResult
struct	nCheckResultBase
struct	nMethod
	authentication method information More...
struct	nPasswordAnswer
struct	nPasswordCheckData
struct	nPasswordRequest
class	nScrambledPassword
struct	nScrambleInfo
	extra information for password scrambling More...

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Detailed Description

base class for authentication, unaware of armagetron network messages

Definition at line 61 of file nKrawall.h.

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Member Typedef Documentation

typedef nScrambledPassword nKrawall::nSalt

Definition at line 89 of file nKrawall.h.

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Member Function Documentation

tString nKrawall::EncodeScrambledPassword

(

nScrambledPassword const &

scrambled

)

[static]

Definition at line 319 of file nKrawall.cpp.

References sn_WriteHexByte().

{
    std::ostringstream s;
    for( int i = 0; i < 16; ++i )
    {
        unsigned int val = scrambled[i];
        sn_WriteHexByte( s, val );
    }

    return tString( s.str().c_str() );

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tString nKrawall::EncodeString

(

tString const &

original

)

[static]

Definition at line 332 of file nKrawall.cpp.

References c, in, and sn_WriteHexByte().

{
    std::istringstream in( static_cast< char const * >( original ) );
    std::ostringstream out;

    char c = in.get();
    while ( !in.eof() )
    {
        if ( c == ' ' )
        {
            out.put( '+' );
        }
        else if ( isalnum( c ) )
        {
            out.put( c );
        }
        else
        {
            out.put('%');
            out << std::uppercase;
            sn_WriteHexByte( out, c );
        }
        c = in.get();
    }

    return tString( out.str().c_str() );

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void nKrawall::WriteScrambledPassword	(	const nScrambledPassword &	scrambled,
		nMessage &	m
	)			[static]

Definition at line 361 of file nKrawall.cpp.

References nMessage::Write().

Referenced by FinishHandlePasswordRequest(), WriteSalt(), and tConfItemPassword::WriteVal().

{
    for (int i = 7; i>=0; i--)
        m.Write(scrambled[i << 1] + (scrambled[(i << 1) + 1] << 8));

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void nKrawall::ReadScrambledPassword	(	nMessage &	m,
		nScrambledPassword &	scrambled
	)			[static]

Definition at line 368 of file nKrawall.cpp.

References nMessage::Read(), and x.

Referenced by login_accept_handler(), ReadSalt(), and tConfItemPassword::ReadVal().

{
    for (int i = 7; i>=0; i--)
    {
        unsigned short x;
        m.Read(x);
        unsigned char low  = x & 255;
        unsigned char high = (x - low) >> 8;

        scrambled[ i << 1     ] = low;
        scrambled[(i << 1) + 1] = high;
    }

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void nKrawall::WriteScrambledPassword	(	const nScrambledPassword &	scrambled,
		std::ostream &	s
	)			[static]

Definition at line 384 of file nKrawall.cpp.

{
    for (int i = 15; i>=0; i--)
        s << (int)scrambled[i] << ' ';

void nKrawall::ReadScrambledPassword	(	std::istream &	s,
		nScrambledPassword &	scrambled
	)			[static]

Definition at line 391 of file nKrawall.cpp.

References x.

{
    for (int i = 15; i>=0; i--)
    {
        int x;
        s >> x;
        scrambled[i] = x;
    }

static void nKrawall::WriteSalt	(	const nSalt &	salt,
		nMessage &	m
	)			[inline, static]

Definition at line 221 of file nKrawall.h.

References WriteScrambledPassword().

    {
        WriteScrambledPassword(salt, m);
    }

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static void nKrawall::ReadSalt	(	nMessage &	m,
		nSalt &	salt
	)			[inline, static]

Definition at line 227 of file nKrawall.h.

References ReadScrambledPassword().

Referenced by nAuthentication::HandlePasswordRequest().

    {
        ReadScrambledPassword(m, salt);
    }

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bool nKrawall::ArePasswordsEqual	(	const nScrambledPassword &	a,
		const nScrambledPassword &	b
	)			[static]

Definition at line 290 of file nKrawall.cpp.

{
    for (int i=15; i>=0; i--)
        if (a[i] != b[i])
            return false;

    return true;

void nKrawall::ScramblePassword	(	const tString &	password,
		nScrambledPassword &	scrambled
	)			[static]

Definition at line 405 of file nKrawall.cpp.

References nKrawall::nScrambledPassword::content, md5_append(), md5_finish(), and md5_init().

Referenced by nKrawall::nMethod::ScramblePassword().

{
    md5_state_t state;
    md5_init(&state);
    md5_append(&state, (md5_byte_t const *)(password.c_str()), password.size());
    md5_finish(&state, scrambled.content);

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void nKrawall::BrokenScramblePassword	(	const tString &	password,
		nScrambledPassword &	scrambled
	)			[static]

Definition at line 415 of file nKrawall.cpp.

References nKrawall::nScrambledPassword::content, tString::Len(), md5_append(), md5_finish(), and md5_init().

Referenced by nKrawall::nMethod::ScramblePassword().

{
    md5_state_t state;
    md5_init(&state);
    md5_append(&state, (md5_byte_t const *)(password.c_str()), password.Len());
    md5_finish(&state, scrambled.content);

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void nKrawall::ScrambleWithSalt2	(	const nScrambledPassword &	source,
		const nSalt &	salt,
		nScrambledPassword &	dest
	)			[static]

Definition at line 426 of file nKrawall.cpp.

References nKrawall::nScrambledPassword::content, md5_append(), md5_finish(), and md5_init().

Referenced by nKrawall::nMethod::ScrambleWithSalt().

{
    md5_state_t state;
    md5_init(&state);
    md5_append(&state, source.content, 16);
    md5_append(&state, salt.content  , 16);
    md5_finish(&state, dest.content);

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void nKrawall::RandomSalt

(

nSalt &

salt

)

[static]

Definition at line 446 of file nKrawall.cpp.

References tRandomizer::Get(), and tRandomizer::GetInstance().

{
    // oh dear. getting a random salt value with this method is EVIL...
    tRandomizer & randomizer = tRandomizer::GetInstance();
    for (int i=15; i>=0; i--)
        salt[i] = randomizer.Get( 256 );
    //        salt[i] = (int)(256.0 * rand() / (RAND_MAX + 1.0));

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The documentation for this class was generated from the following files:

• src/network/nKrawall.h
• src/network/nKrawall.cpp

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