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|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
* E-mail:
* <brain@chatspike.net>
* <Craig@chatspike.net>
*
* Written by Craig Edwards, Craig McLure, and others.
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#ifndef __MD5_H__
#define __MD5_H__
#include "modules.h"
/** MD5Request is the base class used to send MD5 requests to m_md5.so.
* You should not instantiate classes of type MD5Request directly, instead
* you should instantiate classes of type MD5ResetRequest, MD5SumRequest,
* MD5KeyRequest and MD5HexRequest, shown below.
*/
class MD5Request : public Request
{
/** The keys (IV) to use */
unsigned int* keys;
/** The output characters (hex sequence) to use */
const char* outputs;
/** The string to hash */
std::string tohash;
public:
/** Initialize MD5Request as an MD5_RESET message */
MD5Request(Module* Me, Module* Target) : Request(Me, Target, "MD5_RESET")
{
}
/** Initialize MD5Request as an MD5_SUM message */
MD5Request(Module* Me, Module* Target, const std::string &hashable) : Request(Me, Target, "MD5_SUM"), keys(NULL), outputs(NULL), tohash(hashable)
{
}
/** Initialize MD5Request as an MD5_KEY message */
MD5Request(Module* Me, Module* Target, unsigned int* k) : Request(Me, Target, "MD5_KEY"), keys(k), outputs(NULL), tohash("")
{
}
/** Initialize MD5Request as an MD5_HEX message */
MD5Request(Module* Me, Module* Target, const char* out) : Request(Me, Target, "MD5_HEX"), keys(NULL), outputs(out), tohash("")
{
}
/** Get data to be hashed */
const char* GetHashData()
{
return tohash.c_str();
}
/** Get keys (IVs) to be used */
unsigned int* GetKeyData()
{
return keys;
}
/** Get output characters (hex sequence) to be used */
const char* GetOutputs()
{
return outputs;
}
};
/** Send this class to m_md5.so to reset the MD5 module to a known state.
* This will reset the IV to the defaults specified by the MD5 spec,
* and reset the hex sequence to "0123456789abcdef". It should be sent before
* ANY other Request types.
*
* Example:
* \code
* // Reset the MD5 module.
* MD5ResetRequest(this, MD5Module).Send();
* \endcode
*/
class MD5ResetRequest : public MD5Request
{
public:
/** Initialize MD5ResetRequest for sending.
* @param Me A pointer to the sending module
* @param Target A pointer to the m_md5.so module
*/
MD5ResetRequest(Module* Me, Module* Target) : MD5Request(Me, Target)
{
}
};
/** Send this class to m_md5.so to MD5SUM a std::string.
* You should make sure you know the state of the module before you send this
* class, e.g. by first sending an MD5ResetRequest class. The hash will be
* returned when you call Send().
*
* Example:
* \code
* // ALWAYS ALWAYS reset first, or set your own IV and hex chars.
* MD5ResetRequest(this, MD5Module).Send();
* // Get the MD5 sum of the string 'doodads'.
* std::string result = MD5SumRequest(this, MD5Module, "doodads").Send();
* \endcode
*/
class MD5SumRequest : public MD5Request
{
public:
/** Initialize MD5SumRequest for sending.
* @param Me A pointer to the sending module
* @param Target A pointer to the m_md5.so module
* @param data The data to be hashed
*/
MD5SumRequest(Module* Me, Module* Target, const std::string &data) : MD5Request(Me, Target, data)
{
}
};
/** Send this class to m_md5.so to change the IVs (keys) to use for hashing.
* You should make sure you know the state of the module before you send this
* class, e.g. by first sending an MD5ResetRequest class. The default values for
* the IV's are those specified in the MD5 specification. Only in very special
* circumstances should you need to change the IV's (see for example m_cloaking.cpp)
*
* Example:
* \code
* unsigned int iv[] = { 0xFFFFFFFF, 0x00000000, 0xAAAAAAAA, 0xCCCCCCCC };
* MD5KeyRequest(this, MD5Module, iv);
* \endcode
*/
class MD5KeyRequest : public MD5Request
{
public:
/** Initialize MD5KeyRequest for sending.
* @param Me A pointer to the sending module
* @param Target A pointer to the m_md5.so module
* @param data The new IV's. This should be an array of exactly four 32 bit values.
* On 64-bit architectures, the upper 32 bits of the values will be discarded.
*/
MD5KeyRequest(Module* Me, Module* Target, unsigned int* data) : MD5Request(Me, Target, data)
{
}
};
/** Send this class to m_md5.so to change the hex sequence to use for generating the returned value.
* You should make sure you know the state of the module before you send this
* class, e.g. by first sending an MD5ResetRequest class. The default value for
* the hex sequence is "0123456789abcdef". Only in very special circumstances should
* you need to change the hex sequence (see for example m_cloaking.cpp).
*
* Example:
* \code
* static const char tab[] = "fedcba9876543210";
* MD5HexRequest(this, MD5Module, tab);
* \endcode
*/
class MD5HexRequest : public MD5Request
{
public:
/** Initialize MD5HexRequest for sending.
* @param Me A pointer to the sending module
* @param Target A pointer to the m_md5.so module
* @param data The hex sequence to use. This should contain exactly 16 ASCII characters,
* terminated by a NULL char.
*/
MD5HexRequest(Module* Me, Module* Target, const char* data) : MD5Request(Me, Target, data)
{
}
};
#endif
|
