* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
- * InspIRCd: (C) 2002-2007 InspIRCd Development Team
- * See: http://www.inspircd.org/wiki/index.php/Credits
+ * InspIRCd: (C) 2002-2010 InspIRCd Development Team
+ * See: http://wiki.inspircd.org/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
#define SHA256_DIGEST_SIZE (256 / 8)
#define SHA256_BLOCK_SIZE (512 / 8)
-/** HashRequest is the base class used to send Hash requests to hashing.so.
- * You should not instantiate classes of type HashRequest directly, instead
- * you should instantiate classes of type HashResetRequest, HashSumRequest,
- * HashKeyRequest and HashHexRequest, shown below.
- */
-class HashRequest : public Request
+class HashProvider : public DataProvider
{
- /** 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 HashRequest as an Hash_RESET message */
- HashRequest(const char* req, Module* Me, Module* Target) : Request(Me, Target, req)
- {
- }
-
- /** Initialize HashRequest as an Hash_SUM message */
- HashRequest(Module* Me, Module* Target, const std::string &hashable) : Request(Me, Target, "SUM"), keys(NULL), outputs(NULL), tohash(hashable)
- {
- }
-
- /** Initialize HashRequest as an Hash_KEY message */
- HashRequest(Module* Me, Module* Target, unsigned int* k) : Request(Me, Target, "KEY"), keys(k), outputs(NULL), tohash("")
- {
- }
-
- /** Initialize HashRequest as an Hash_HEX message */
- HashRequest(Module* Me, Module* Target, const char* out) : Request(Me, Target, "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 the hashing module to query for its name.
- *
- * Example:
- * \code
- * cout << "Using hash algorithm: " << HashNameRequest(this, HashModule).Send();
- * \endcode
- */
-class HashNameRequest : public HashRequest
-{
- public:
- /** Initialize HashNameRequest for sending.
- * @param Me A pointer to the sending module
- * @param Target A pointer to the hashing module
+ HashProvider(Module* mod, const std::string& Name) : DataProvider(mod, Name) {}
+ virtual std::string sum(const std::string& data) = 0;
+ inline std::string hexsum(const std::string& data)
+ {
+ return BinToHex(sum(data));
+ }
+
+ /** Allows the IVs for the hash to be specified. As the choice of initial IV is
+ * important for the security of a hash, this should not be used except to
+ * maintain backwards compatability. This also allows you to change the hex
+ * sequence from its default of "0123456789abcdef", which does not improve the
+ * strength of the output, but helps confuse those attempting to implement it.
+ *
+ * Only m_md5 implements this request; only m_cloaking should use it.
+ *
+ * Example:
+ * \code
+ * unsigned int iv[] = { 0xFFFFFFFF, 0x00000000, 0xAAAAAAAA, 0xCCCCCCCC };
+ * std::string result = Hash.sumIV(iv, "0123456789abcdef", "data");
+ * \endcode
*/
- HashNameRequest(Module* Me, Module* Target) : HashRequest("NAME", Me, Target)
- {
- }
-};
-
-/** Send this class to the hashing module to reset the Hash module to a known state.
- * This will reset the IV to the defaults specified by the Hash spec,
- * and reset the hex sequence to "0123456789abcdef". It should be sent before
- * ANY other Request types.
- *
- * Example:
- * \code
- * // Reset the Hash module.
- * HashResetRequest(this, HashModule).Send();
- * \endcode
- */
-class HashResetRequest : public HashRequest
-{
- public:
- /** Initialize HashResetRequest for sending.
- * @param Me A pointer to the sending module
- * @param Target A pointer to the hashing module
- */
- HashResetRequest(Module* Me, Module* Target) : HashRequest("RESET", Me, Target)
- {
- }
-};
-
-/** Send this class to the hashing module to HashSUM 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 HashResetRequest class. The hash will be
- * returned when you call Send().
- *
- * Example:
- * \code
- * // ALWAYS ALWAYS reset first, or set your own IV and hex chars.
- * HashResetRequest(this, HashModule).Send();
- * // Get the Hash sum of the string 'doodads'.
- * std::string result = HashSumRequest(this, HashModule, "doodads").Send();
- * \endcode
- */
-class HashSumRequest : public HashRequest
-{
- public:
- /** Initialize HashSumRequest for sending.
- * @param Me A pointer to the sending module
- * @param Target A pointer to the hashing module
- * @param data The data to be hashed
- */
- HashSumRequest(Module* Me, Module* Target, const std::string &data) : HashRequest(Me, Target, data)
- {
- }
-};
-
-/** Send this class to hashing module 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 HashResetRequest class. The default values for
- * the IV's are those specified in the Hash 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 };
- * HashKeyRequest(this, HashModule, iv);
- * \endcode
- */
-class HashKeyRequest : public HashRequest
-{
- public:
- /** Initialize HashKeyRequest for sending.
- * @param Me A pointer to the sending module
- * @param Target A pointer to the hashing 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.
- */
- HashKeyRequest(Module* Me, Module* Target, unsigned int* data) : HashRequest(Me, Target, data)
- {
- }
-};
-
-/** Send this class to the hashing module 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 HashResetRequest 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";
- * HashHexRequest(this, HashModule, tab);
- * \endcode
- */
-class HashHexRequest : public HashRequest
-{
- public:
- /** Initialize HashHexRequest for sending.
- * @param Me A pointer to the sending module
- * @param Target A pointer to the hashing module
- * @param data The hex sequence to use. This should contain exactly 16 ASCII characters,
- * terminated by a NULL char.
- */
- HashHexRequest(Module* Me, Module* Target, const char* data) : HashRequest(Me, Target, data)
- {
- }
+ virtual std::string sumIV(unsigned int* IV, const char* HexMap, const std::string &sdata) = 0;
};
#endif
projects / user / henk / code / inspircd.git / blobdiff