Untested update to the new plugin API.

Various other changes to the plugin as well.

source/Library/Crypt/AES.cpp

@@ -0,0 +1,160 @@
+// ------------------------------------------------------------------------------------------------
+#include "Library/Crypt/AES.hpp"
+#include "Base/Shared.hpp"
+#include "Base/Stack.hpp"
+
+// ------------------------------------------------------------------------------------------------
+#include <cstdlib>
+#include <cstring>
+
+// ------------------------------------------------------------------------------------------------
+namespace SqMod {
+
+// ------------------------------------------------------------------------------------------------
+SQInteger AES256::Typename(HSQUIRRELVM vm)
+{
+    static SQChar name[] = _SC("SqAES256");
+    sq_pushstring(vm, name, sizeof(name));
+    return 1;
+}
+
+// ------------------------------------------------------------------------------------------------
+AES256::AES256()
+    : m_Context(), m_Buffer()
+{
+    aes256_done(&m_Context);
+}
+
+// ------------------------------------------------------------------------------------------------
+AES256::AES256(CSStr key)
+    : m_Context(), m_Buffer()
+{
+    Init(key);
+}
+
+// ------------------------------------------------------------------------------------------------
+Int32 AES256::Cmp(const AES256 & o) const
+{
+    return std::memcmp(m_Buffer, o.m_Buffer, sizeof(m_Buffer));
+}
+
+// ------------------------------------------------------------------------------------------------
+CSStr AES256::ToString() const
+{
+    return ToStrF("%s", m_Buffer);
+}
+
+// ------------------------------------------------------------------------------------------------
+CSStr AES256::GetKey() const
+{
+    return reinterpret_cast< CSStr >(m_Buffer);
+}
+
+// ------------------------------------------------------------------------------------------------
+bool AES256::Init(CSStr key)
+{
+    // Clear current key, if any
+    aes256_done(&m_Context);
+    // Is the specified key empty?
+    if (!key || *key == '\0')
+    {
+        return false; // Leave the context with an empty key
+    }
+    // Obtain the specified key size
+    const Uint32 size = (std::strlen(key) * sizeof(SQChar));
+    // See if the key size is accepted
+    if (size > sizeof(m_Buffer))
+    {
+        STHROWF("The specified key is out of bounds: %u > %u", size, sizeof(m_Buffer));
+    }
+    // Initialize the key buffer to 0
+    std::memset(m_Buffer, 0, sizeof(m_Buffer));
+    // Copy the key into the key buffer
+    std::memcpy(m_Buffer, key, size);
+    // Initialize the context with the specified key
+    aes256_init(&m_Context, m_Buffer);
+    // This context was successfully initialized
+    return true;
+}
+
+// ------------------------------------------------------------------------------------------------
+void AES256::Done()
+{
+    aes256_done(&m_Context);
+}
+
+// ------------------------------------------------------------------------------------------------
+String AES256::Encrypt(CSStr data)
+{
+    // Is there any data to encrypt?
+    if (!data || *data == 0)
+    {
+        return String();
+    }
+    // Copy the data into an editable string
+    String str(data);
+    // Make sure that we have a size with a multiple of 16
+    if ((str.size() % 16) != 0)
+    {
+        str.resize(str.size() - (str.size() % 16) + 16);
+    }
+    // Encrypt in chunks of 16 characters
+    for (Uint32 n = 0; n < str.size(); n += 16)
+    {
+        aes256_encrypt_ecb(&m_Context, reinterpret_cast< Uint8 * >(&str[n]));
+    }
+    // Return ownership of the encrypted string
+    return std::move(str);
+}
+
+// ------------------------------------------------------------------------------------------------
+String AES256::Decrypt(CSStr data)
+{
+    // Is there any data to decrypt?
+    if (!data || *data == 0)
+    {
+        return String();
+    }
+    // Copy the data into an editable string
+    String str(data);
+    // Make sure that we have a size with a multiple of 16
+    if ((str.size() % 16) != 0)
+    {
+        str.resize(str.size() - (str.size() % 16) + 16);
+    }
+    // Decrypt inc chunks of 16 characters
+    for (Uint32 n = 0; n < str.size(); n += 16)
+    {
+        aes256_decrypt_ecb(&m_Context, reinterpret_cast< Uint8 * >(&str[n]));
+    }
+    // Remove null characters in case the string was not a multiple of 16 when encrypted
+    while (!str.empty() && str.back() == 0)
+    {
+        str.pop_back();
+    }
+    // Return ownership of the encrypted string
+    return std::move(str);
+}
+
+// ================================================================================================
+void Register_AES(HSQUIRRELVM vm)
+{
+    RootTable(vm).Bind("SqAES256", Class< AES256 >(vm, "SqAES256")
+        // Constructors
+        .Ctor()
+        .Ctor< CSStr >()
+        // Metamethods
+        .Func(_SC("_cmp"), &AES256::Cmp)
+        .SquirrelFunc(_SC("_typename"), &AES256::Typename)
+        .Func(_SC("_tostring"), &AES256::ToString)
+        /* Properties */
+        .Prop(_SC("Key"), &AES256::GetKey)
+        /* Functions */
+        .Func(_SC("Init"), &AES256::Init)
+        .Func(_SC("Done"), &AES256::Done)
+        .Func(_SC("Encrypt"), &AES256::Encrypt)
+        .Func(_SC("Decrypt"), &AES256::Decrypt)
+    );
+}
+
+} // Namespace:: SqMod

source/Library/Crypt/AES.hpp

@@ -0,0 +1,110 @@
+#ifndef _LIBRARY_CRYPT_AES_HPP_
+#define _LIBRARY_CRYPT_AES_HPP_
+
+// ------------------------------------------------------------------------------------------------
+#include "SqBase.hpp"
+
+// ------------------------------------------------------------------------------------------------
+#include <aes256.h>
+
+// ------------------------------------------------------------------------------------------------
+namespace SqMod {
+
+/* ------------------------------------------------------------------------------------------------
+ * Simple wrapper around a the AES encryption context.
+*/
+class AES256
+{
+public:
+
+    /* --------------------------------------------------------------------------------------------
+     * Default constructor.
+    */
+    AES256();
+
+    /* --------------------------------------------------------------------------------------------
+     * Construct with an explicit key.
+    */
+    AES256(CSStr key);
+
+    /* --------------------------------------------------------------------------------------------
+     * Copy constructor.
+    */
+    AES256(const AES256 & o) = default;
+
+    /* --------------------------------------------------------------------------------------------
+     * Move constructor.
+    */
+    AES256(AES256 && o) = default;
+
+    /* --------------------------------------------------------------------------------------------
+     * Destructor.
+    */
+    ~AES256() = default;
+
+    /* --------------------------------------------------------------------------------------------
+     * Copy assignment operator.
+    */
+    AES256 & operator = (const AES256 & o) = default;
+
+    /* --------------------------------------------------------------------------------------------
+     * Move assignment operator.
+    */
+    AES256 & operator = (AES256 && o) = default;
+
+    /* --------------------------------------------------------------------------------------------
+     * Used by the script engine to compare two instances of this type.
+    */
+    Int32 Cmp(const AES256 & o) const;
+
+    /* --------------------------------------------------------------------------------------------
+     * Used by the script engine to convert an instance of this type to a string.
+    */
+    CSStr ToString() const;
+
+    /* --------------------------------------------------------------------------------------------
+     * Used by the script engine to retrieve the name from instances of this type.
+    */
+    static SQInteger Typename(HSQUIRRELVM vm);
+
+    /* --------------------------------------------------------------------------------------------
+     * Retrieve the associated key.
+    */
+    CSStr GetKey() const;
+
+    /* --------------------------------------------------------------------------------------------
+     * Initialize the context key.
+    */
+    bool Init(CSStr key);
+
+    /* --------------------------------------------------------------------------------------------
+     * Reset the associated context.
+    */
+    void Done();
+
+    /* --------------------------------------------------------------------------------------------
+     * Encrypt the specified string.
+    */
+    String Encrypt(CSStr data);
+
+    /* --------------------------------------------------------------------------------------------
+     * Decrypt the specified string.
+    */
+    String Decrypt(CSStr data);
+
+private:
+
+    /* --------------------------------------------------------------------------------------------
+     * The managed encryption context.
+    */
+    aes256_context  m_Context;
+
+    /* --------------------------------------------------------------------------------------------
+     * The key used to encrypt data.
+    */
+    Uint8           m_Buffer[32]{0};
+};
+
+} // Namespace:: SqMod
+
+#endif // _LIBRARY_CRYPT_AES_HPP_

source/Library/Crypt/Hash.cpp

@@ -0,0 +1,94 @@
+// ------------------------------------------------------------------------------------------------
+#include "Library/Crypt/Hash.hpp"
+#include "Base/Shared.hpp"
+#include "Base/Stack.hpp"
+
+// ------------------------------------------------------------------------------------------------
+#include <crc32.h>
+#include <keccak.h>
+#include <md5.h>
+#include <sha1.h>
+#include <sha256.h>
+#include <sha3.h>
+
+// ------------------------------------------------------------------------------------------------
+#include <cstdlib>
+#include <cstring>
+
+// ------------------------------------------------------------------------------------------------
+namespace SqMod {
+
+/* ------------------------------------------------------------------------------------------------
+ * Utility to avoid creating encoder instances for each call.
+*/
+template < class T > struct BaseHash
+{
+    static T Algo;
+};
+
+// ------------------------------------------------------------------------------------------------
+template < class T > T BaseHash< T >::Algo;
+
+/* ------------------------------------------------------------------------------------------------
+ * Hash the specified value or the result of a formatted string.
+*/
+template < class T > static SQInteger HashF(HSQUIRRELVM vm)
+{
+    // Attempt to retrieve the value from the stack as a string
+    StackStrF val(vm, 2);
+    // Have we failed to retrieve the string?
+    if (SQ_FAILED(val.mRes))
+    {
+        return val.mRes; // Propagate the error!
+    }
+    // Forward the call to the actual implementation and store the string
+    String str(BaseHash< T >::Algo(val.mPtr));
+    // Push the string on the stack
+    sq_pushstring(vm, str.data(), str.size());
+    // At this point we have a valid string on the stack
+    return 1;
+}
+
+// ================================================================================================
+template < class T > static void RegisterWrapper(Table & hashns, CCStr cname)
+{
+    typedef HashWrapper< T > Hash;
+    hashns.Bind(cname, Class< Hash >(hashns.GetVM(), cname)
+        // Constructors
+        .Ctor()
+        // Metamethods
+        .Func(_SC("_tostring"), &Hash::ToString)
+        // Properties
+        .Prop(_SC("Hash"), &Hash::GetHash)
+        // Functions
+        .Func(_SC("Reset"), &Hash::Reset)
+        .Func(_SC("Compute"), &Hash::Compute)
+        .Func(_SC("GetHash"), &Hash::GetHash)
+        .Func(_SC("Add"), &Hash::AddStr)
+        .Func(_SC("AddStr"), &Hash::AddStr)
+    );
+}
+
+// ================================================================================================
+void Register_Hash(HSQUIRRELVM vm)
+{
+    Table hashns(vm);
+
+    RegisterWrapper< CRC32 >(hashns, _SC("CRC32"));
+    RegisterWrapper< Keccak >(hashns, _SC("Keccak"));
+    RegisterWrapper< MD5 >(hashns, _SC("MD5"));
+    RegisterWrapper< SHA1 >(hashns, _SC("SHA1"));
+    RegisterWrapper< SHA256 >(hashns, _SC("SHA256"));
+    RegisterWrapper< SHA3 >(hashns, _SC("SHA3"));
+
+    hashns.SquirrelFunc(_SC("GetCRC32"), &HashF< CRC32 >);
+    hashns.SquirrelFunc(_SC("GetKeccak"), &HashF< Keccak >);
+    hashns.SquirrelFunc(_SC("GetMD5"), &HashF< MD5 >);
+    hashns.SquirrelFunc(_SC("GetSHA1"), &HashF< SHA1 >);
+    hashns.SquirrelFunc(_SC("GetSHA256"), &HashF< SHA256 >);
+    hashns.SquirrelFunc(_SC("GetSHA3"), &HashF< SHA3 >);
+
+    RootTable(vm).Bind(_SC("SqHash"), hashns);
+}
+
+} // Namespace:: SqMod

source/Library/Crypt/Hash.hpp

@@ -0,0 +1,102 @@
+#ifndef _LIBRARY_CRYPT_HASH_HPP_
+#define _LIBRARY_CRYPT_HASH_HPP_
+
+// ------------------------------------------------------------------------------------------------
+#include "SqBase.hpp"
+
+// ------------------------------------------------------------------------------------------------
+namespace SqMod {
+
+/* ------------------------------------------------------------------------------------------------
+ * Simple class to maintain the state of an encoder.
+*/
+template < class T > class HashWrapper
+{
+public:
+
+    /* --------------------------------------------------------------------------------------------
+     * Default constructor.
+    */
+    HashWrapper()
+        : m_Encoder()
+    {
+        /* ... */
+    }
+
+    /* --------------------------------------------------------------------------------------------
+     * Copy operator.
+    */
+    HashWrapper(const HashWrapper & o)
+        : m_Encoder(o.m_Encoder)
+    {
+        /* ... */
+    }
+
+    /* --------------------------------------------------------------------------------------------
+     * Destructor.
+    */
+    ~HashWrapper()
+    {
+        /* ... */
+    }
+
+    /* --------------------------------------------------------------------------------------------
+     * Copy assignment operator.
+    */
+    HashWrapper & operator = (const HashWrapper & o)
+    {
+        m_Encoder = o.m_Encoder;
+        return *this;
+    }
+
+    /* --------------------------------------------------------------------------------------------
+     * Used by the script engine to convert an instance of this type to a string.
+    */
+    String ToString()
+    {
+        return m_Encoder.getHash();
+    }
+
+    /* --------------------------------------------------------------------------------------------
+     * Reset the encoder state.
+    */
+    void Reset()
+    {
+        m_Encoder.reset();
+    }
+
+    /* --------------------------------------------------------------------------------------------
+     * Compute the hash of the specified string.
+    */
+    String Compute(const String & str)
+    {
+        return m_Encoder(str);
+    }
+
+    /* --------------------------------------------------------------------------------------------
+     * Retrieve the hash value of the data hashed so far.
+    */
+    String GetHash()
+    {
+        return m_Encoder.getHash();
+    }
+
+    /* --------------------------------------------------------------------------------------------
+     * Add a string value to be hashed.
+    */
+    void AddStr(const String & str)
+    {
+        m_Encoder.add(str.data(), str.length() * sizeof(String::value_type));
+    }
+
+private:
+
+    /* --------------------------------------------------------------------------------------------
+     * The managed encoder state.
+    */
+    T m_Encoder;
+};
+
+} // Namespace:: SqMod
+
+#endif // _LIBRARY_CRYPT_HASH_HPP_