flewkey/cuberite-2a
1
0
Fork 0
Code Releases Activity

Add cUUID class (#3871)

Browse Source
This commit is contained in:
peterbell10
2017-08-25 13:43:18 +01:00
committed by Alexander Harkness
parent 86d52c3e17
commit f4f2fc7c3d
54 changed files with 1339 additions and 508 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
src/ClientHandle.cpp
View File

@@ -274,55 +274,28 @@ AString cClientHandle::FormatMessageType(bool ShouldAppendChatPrefixes, eMessage
AString cClientHandle::GenerateOfflineUUID(const AString & a_Username)
cUUID cClientHandle::GenerateOfflineUUID(const AString & a_Username)
{
// Online UUIDs are always version 4 (random)
// We use Version 3 (MD5 hash) UUIDs for the offline UUIDs
// This guarantees that they will never collide with an online UUID and can be distinguished.
// Proper format for a version 3 UUID is:
// xxxxxxxx-xxxx-3xxx-yxxx-xxxxxxxxxxxx where x is any hexadecimal digit and y is one of 8, 9, A, or B
// Note that we generate a short UUID (without the dashes)
// First make the username lowercase:
AString lcUsername = StrToLower(a_Username);
// Generate an md5 checksum, and use it as base for the ID:
unsigned char MD5[16];
md5(reinterpret_cast<const unsigned char *>(lcUsername.c_str()), lcUsername.length(), MD5);
MD5[6] &= 0x0f; // Need to trim to 4 bits only...
MD5[8] &= 0x0f; // ... otherwise %01x overflows into two chars
return Printf("%02x%02x%02x%02x%02x%02x3%01x%02x8%01x%02x%02x%02x%02x%02x%02x%02x",
MD5[0], MD5[1], MD5[2], MD5[3],
MD5[4], MD5[5], MD5[6], MD5[7],
MD5[8], MD5[9], MD5[10], MD5[11],
MD5[12], MD5[13], MD5[14], MD5[15]
);
return cUUID::GenerateVersion3(lcUsername);
}
bool cClientHandle::IsUUIDOnline(const AString & a_UUID)
bool cClientHandle::IsUUIDOnline(const cUUID & a_UUID)
{
// Online UUIDs are always version 4 (random)
// We use Version 3 (MD5 hash) UUIDs for the offline UUIDs
// This guarantees that they will never collide with an online UUID and can be distinguished.
// The version-specifying char is at pos #12 of raw UUID, pos #14 in dashed-UUID.
switch (a_UUID.size())
{
case 32:
{
// This is the UUID format without dashes, the version char is at pos #12:
return (a_UUID[12] == '4');
}
case 36:
{
// This is the UUID format with dashes, the version char is at pos #14:
return (a_UUID[14] == '4');
}
}
return false;
return (a_UUID.Version() == 4);
}
@@ -342,7 +315,7 @@ void cClientHandle::Kick(const AString & a_Reason)
void cClientHandle::Authenticate(const AString & a_Name, const AString & a_UUID, const Json::Value & a_Properties)
void cClientHandle::Authenticate(const AString & a_Name, const cUUID & a_UUID, const Json::Value & a_Properties)
{
// Atomically increment player count (in server thread)
cRoot::Get()->GetServer()->PlayerCreated();
@@ -366,7 +339,7 @@ void cClientHandle::Authenticate(const AString & a_Name, const AString & a_UUID,
m_Username = a_Name;
// Only assign UUID and properties if not already pre-assigned (BungeeCord sends those in the Handshake packet):
if (m_UUID.empty())
if (m_UUID.IsNil())
{
m_UUID = a_UUID;
}
@@ -1661,7 +1634,7 @@ void cClientHandle::HandleSlotSelected(Int16 a_SlotNum)
void cClientHandle::HandleSpectate(const AString & a_PlayerUUID)
void cClientHandle::HandleSpectate(const cUUID & a_PlayerUUID)
{
m_Player->GetWorld()->DoWithPlayerByUUID(a_PlayerUUID, [=](cPlayer * a_ToSpectate)
{