From 843f31ecbace5b78486cb72df9404e0bfec900df Mon Sep 17 00:00:00 2001 From: madmaxoft Date: Thu, 25 Sep 2014 18:33:01 +0200 Subject: HangingEntity: Silenced a crash. Vanilla worlds sometimes contain data that this was asserting upon. Changed into a log. --- src/Entities/HangingEntity.cpp | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/src/Entities/HangingEntity.cpp b/src/Entities/HangingEntity.cpp index 8c70c606e..6e9a89550 100644 --- a/src/Entities/HangingEntity.cpp +++ b/src/Entities/HangingEntity.cpp @@ -28,11 +28,17 @@ void cHangingEntity::SpawnOn(cClientHandle & a_ClientHandle) // The client uses different values for item frame directions and block faces. Our constants are for the block faces, so we convert them here to item frame faces switch (m_BlockFace) { - case BLOCK_FACE_ZP: break; // Initialised to zero + case BLOCK_FACE_ZP: Dir = 0; break; case BLOCK_FACE_ZM: Dir = 2; break; case BLOCK_FACE_XM: Dir = 1; break; case BLOCK_FACE_XP: Dir = 3; break; - default: ASSERT(!"Unhandled block face when trying to spawn item frame!"); return; + default: + { + LOGINFO("Invalid face (%d) in a cHangingEntity at {%d, %d, %d}, adjusting to BLOCK_FACE_XP.", + m_BlockFace, (int)GetPosX(), (int)GetPosY(), (int)GetPosZ() + ); + Dir = 3; + } } if ((Dir == 0) || (Dir == 2)) // Probably a client bug, but two directions are flipped and contrary to the norm, so we do -180 -- cgit v1.2.3 From a518a83c258897d5f2e0d769aa7fce8c30befafb Mon Sep 17 00:00:00 2001 From: madmaxoft Date: Thu, 25 Sep 2014 18:33:34 +0200 Subject: 1.7 Protocol: fixed potential problems with no-payload packets. --- src/Protocol/Protocol17x.cpp | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/src/Protocol/Protocol17x.cpp b/src/Protocol/Protocol17x.cpp index 67a4c47a7..73d2a74f9 100644 --- a/src/Protocol/Protocol17x.cpp +++ b/src/Protocol/Protocol17x.cpp @@ -1519,9 +1519,6 @@ void cProtocol172::AddReceivedData(const char * a_Data, size_t a_Size) VERIFY(m_ReceivedData.ReadToByteBuffer(bb, (int)PacketLen)); m_ReceivedData.CommitRead(); - // Write one NUL extra, so that we can detect over-reads - bb.Write("\0", 1); - UInt32 PacketType; if (!bb.ReadVarInt(PacketType)) { @@ -1529,6 +1526,9 @@ void cProtocol172::AddReceivedData(const char * a_Data, size_t a_Size) break; } + // Write one NUL extra, so that we can detect over-reads + bb.Write("\0", 1); + // Log the packet info into the comm log file: if (g_ShouldLogCommIn) { @@ -1536,7 +1536,7 @@ void cProtocol172::AddReceivedData(const char * a_Data, size_t a_Size) bb.ReadAll(PacketData); bb.ResetRead(); bb.ReadVarInt(PacketType); - ASSERT(PacketData.size() > 0); + ASSERT(PacketData.size() > 0); // We have written an extra NUL, so there had to be at least one byte read PacketData.resize(PacketData.size() - 1); AString PacketDataHex; CreateHexDump(PacketDataHex, PacketData.data(), PacketData.size(), 16); -- cgit v1.2.3 From aeabc4ff6b19384df47031fc995cd8ac988c2e0a Mon Sep 17 00:00:00 2001 From: madmaxoft Date: Thu, 25 Sep 2014 18:34:40 +0200 Subject: 1.8 Protocol: Fixed problems with no-payload packets. --- src/Protocol/Protocol18x.cpp | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/src/Protocol/Protocol18x.cpp b/src/Protocol/Protocol18x.cpp index f62d350fe..94eaa43db 100644 --- a/src/Protocol/Protocol18x.cpp +++ b/src/Protocol/Protocol18x.cpp @@ -1711,7 +1711,7 @@ void cProtocol180::AddReceivedData(const char * a_Data, size_t a_Size) m_ReceivedData.ResetRead(); break; } - cByteBuffer bb(PacketLen); + cByteBuffer bb(PacketLen + 1); VERIFY(m_ReceivedData.ReadToByteBuffer(bb, (int)PacketLen)); m_ReceivedData.CommitRead(); @@ -1726,9 +1726,6 @@ void cProtocol180::AddReceivedData(const char * a_Data, size_t a_Size) } } - // Write one NUL extra, so that we can detect over-reads - bb.Write("\0", 1); - UInt32 PacketType; if (!bb.ReadVarInt(PacketType)) { @@ -1736,6 +1733,9 @@ void cProtocol180::AddReceivedData(const char * a_Data, size_t a_Size) break; } + // Write one NUL extra, so that we can detect over-reads + bb.Write("\0", 1); + // Log the packet info into the comm log file: if (g_ShouldLogCommIn) { @@ -1743,7 +1743,7 @@ void cProtocol180::AddReceivedData(const char * a_Data, size_t a_Size) bb.ReadAll(PacketData); bb.ResetRead(); bb.ReadVarInt(PacketType); - ASSERT(PacketData.size() > 0); + ASSERT(PacketData.size() > 0); // We have written an extra NUL, so there had to be at least one byte read PacketData.resize(PacketData.size() - 1); AString PacketDataHex; CreateHexDump(PacketDataHex, PacketData.data(), PacketData.size(), 16); @@ -1777,7 +1777,8 @@ void cProtocol180::AddReceivedData(const char * a_Data, size_t a_Size) return; } - if (bb.GetReadableSpace() != 0) + // The packet should have 1 byte left in the buffer - the NUL we had added + if (bb.GetReadableSpace() != 1) { // Read more or less than packet length, report as error LOGWARNING("Protocol 1.8: Wrong number of bytes read for packet 0x%x, state %d. Read " SIZE_T_FMT " bytes, packet contained %u bytes", -- cgit v1.2.3 From c6f78d516b356c9ea1137331fbd5eff0762aa1a9 Mon Sep 17 00:00:00 2001 From: madmaxoft Date: Thu, 25 Sep 2014 18:35:41 +0200 Subject: Redstone: Fixed a crash with repeaters on a chunk border. --- src/Simulator/IncrementalRedstoneSimulator.cpp | 35 ++++++++++++++++---------- 1 file changed, 22 insertions(+), 13 deletions(-) diff --git a/src/Simulator/IncrementalRedstoneSimulator.cpp b/src/Simulator/IncrementalRedstoneSimulator.cpp index 7b3a2c2fa..8649a1841 100644 --- a/src/Simulator/IncrementalRedstoneSimulator.cpp +++ b/src/Simulator/IncrementalRedstoneSimulator.cpp @@ -1619,17 +1619,22 @@ bool cIncrementalRedstoneSimulator::IsRepeaterLocked(int a_RelBlockX, int a_RelB { // Check if eastern(right) neighbor is a powered on repeater who is facing us BLOCKTYPE Block = 0; - if (m_Chunk->UnboundedRelGetBlockType(a_RelBlockX + 1, a_RelBlockY, a_RelBlockZ, Block) && (Block == E_BLOCK_REDSTONE_REPEATER_ON)) // Is right neighbor a powered repeater? + NIBBLETYPE OtherRepeaterDir = 0; + if (m_Chunk->UnboundedRelGetBlock(a_RelBlockX + 1, a_RelBlockY, a_RelBlockZ, Block, OtherRepeaterDir) && (Block == E_BLOCK_REDSTONE_REPEATER_ON)) // Is right neighbor a powered repeater? { - NIBBLETYPE OtherRepeaterDir = m_Chunk->GetMeta(a_RelBlockX + 1, a_RelBlockY, a_RelBlockZ) & 0x3; - if (OtherRepeaterDir == 0x3) { return true; } // If so, I am latched/locked + if ((OtherRepeaterDir & 0x03) == 0x03) + { + return true; + } // If so, I am latched/locked } // Check if western(left) neighbor is a powered on repeater who is facing us - if (m_Chunk->UnboundedRelGetBlockType(a_RelBlockX - 1, a_RelBlockY, a_RelBlockZ, Block) && (Block == E_BLOCK_REDSTONE_REPEATER_ON)) + if (m_Chunk->UnboundedRelGetBlock(a_RelBlockX - 1, a_RelBlockY, a_RelBlockZ, Block, OtherRepeaterDir) && (Block == E_BLOCK_REDSTONE_REPEATER_ON)) { - NIBBLETYPE OtherRepeaterDir = m_Chunk->GetMeta(a_RelBlockX -1, a_RelBlockY, a_RelBlockZ) & 0x3; - if (OtherRepeaterDir == 0x1) { return true; } // If so, I am latched/locked + if ((OtherRepeaterDir & 0x03) == 0x01) + { + return true; + } // If so, I am latched/locked } break; @@ -1641,19 +1646,23 @@ bool cIncrementalRedstoneSimulator::IsRepeaterLocked(int a_RelBlockX, int a_RelB { // Check if southern(down) neighbor is a powered on repeater who is facing us BLOCKTYPE Block = 0; - if (m_Chunk->UnboundedRelGetBlockType(a_RelBlockX, a_RelBlockY, a_RelBlockZ + 1, Block) && (Block == E_BLOCK_REDSTONE_REPEATER_ON)) + NIBBLETYPE OtherRepeaterDir = 0; + if (m_Chunk->UnboundedRelGetBlock(a_RelBlockX, a_RelBlockY, a_RelBlockZ + 1, Block, OtherRepeaterDir) && (Block == E_BLOCK_REDSTONE_REPEATER_ON)) { - NIBBLETYPE OtherRepeaterDir = m_Chunk->GetMeta(a_RelBlockX, a_RelBlockY, a_RelBlockZ + 1) & 0x3; - if (OtherRepeaterDir == 0x0) { return true; } // If so, am latched/locked + if ((OtherRepeaterDir & 0x03) == 0x00) + { + return true; + } // If so, am latched/locked } // Check if northern(up) neighbor is a powered on repeater who is facing us - if (m_Chunk->UnboundedRelGetBlockType(a_RelBlockX, a_RelBlockY, a_RelBlockZ - 1, Block) && (Block == E_BLOCK_REDSTONE_REPEATER_ON)) + if (m_Chunk->UnboundedRelGetBlock(a_RelBlockX, a_RelBlockY, a_RelBlockZ - 1, Block, OtherRepeaterDir) && (Block == E_BLOCK_REDSTONE_REPEATER_ON)) { - NIBBLETYPE OtherRepeaterDir = m_Chunk->GetMeta(a_RelBlockX, a_RelBlockY, a_RelBlockZ - 1) & 0x3; - if (OtherRepeaterDir == 0x2) { return true; } // If so, I am latched/locked + if ((OtherRepeaterDir & 0x03) == 0x02) + { + return true; + } // If so, I am latched/locked } - break; } } -- cgit v1.2.3