feat(Core/Packets): Port packet handling from TrinityCore (#5617)

* feat(Core/Packets): Port packet handling from TrinityCore

* 1

* 2

* 3

* 1

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* #3670

* 3

* 1

* codestyle

* fix msvc warnings

src/server/game/Server/Packets/PacketUtilities.cpp

@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU AGPL v3 license: https://github.com/azerothcore/azerothcore-wotlk/blob/master/LICENSE-AGPL3
+ * Copyright (C) 2021+ WarheadCore <https://github.com/WarheadCore>
+ */
+
+#include "PacketUtilities.h"
+//#include "Hyperlinks.h"
+#include "Errors.h"
+#include <utf8.h>
+#include <sstream>
+#include <array>
+
+WorldPackets::InvalidStringValueException::InvalidStringValueException(std::string const& value) :
+    ByteBufferInvalidValueException("string", value.c_str()) { }
+
+WorldPackets::InvalidUtf8ValueException::InvalidUtf8ValueException(std::string const& value) :
+    InvalidStringValueException(value) { }
+
+WorldPackets::InvalidHyperlinkException::InvalidHyperlinkException(std::string const& value) :
+    InvalidStringValueException(value) { }
+
+WorldPackets::IllegalHyperlinkException::IllegalHyperlinkException(std::string const& value) :
+    InvalidStringValueException(value) { }
+
+bool WorldPackets::Strings::Utf8::Validate(std::string const& value)
+{
+    if (!utf8::is_valid(value.begin(), value.end()))
+        throw InvalidUtf8ValueException(value);
+
+    return true;
+}
+
+//bool WorldPackets::Strings::Hyperlinks::Validate(std::string const& value)
+//{
+//    if (!Warhead::Hyperlinks::CheckAllLinks(value))
+//        throw InvalidHyperlinkException(value);
+//
+//    return true;
+//}
+
+bool WorldPackets::Strings::NoHyperlinks::Validate(std::string const& value)
+{
+    if (value.find('|') != std::string::npos)
+        throw IllegalHyperlinkException(value);
+
+    return true;
+}
+
+WorldPackets::PacketArrayMaxCapacityException::PacketArrayMaxCapacityException(std::size_t requestedSize, std::size_t sizeLimit)
+{
+    std::ostringstream builder;
+    builder << "Attempted to read more array elements from packet " << requestedSize << " than allowed " << sizeLimit;
+    message().assign(builder.str());
+}
+
+void WorldPackets::CheckCompactArrayMaskOverflow(std::size_t index, std::size_t limit)
+{
+    ASSERT(index < limit, "Attempted to insert " SZFMTD " values into CompactArray but it can only hold " SZFMTD, index, limit);
+}