From: Lars Op den Kamp Date: Wed, 30 Nov 2011 19:35:30 +0000 (+0100) Subject: cec: fixed possible segfault when switching the command handler after a vendor id... X-Git-Tag: upstream/2.2.0~1^2~44^2~72 X-Git-Url: https://git.piment-noir.org/?a=commitdiff_plain;h=fcf10e27f023e8e128d407331d0156f9a6f1baa5;p=deb_libcec.git cec: fixed possible segfault when switching the command handler after a vendor id changed --- diff --git a/src/lib/implementations/CECCommandHandler.cpp b/src/lib/implementations/CECCommandHandler.cpp index f53a5e8..a33a577 100644 --- a/src/lib/implementations/CECCommandHandler.cpp +++ b/src/lib/implementations/CECCommandHandler.cpp @@ -42,6 +42,7 @@ using namespace std; CCECCommandHandler::CCECCommandHandler(CCECBusDevice *busDevice) { m_busDevice = busDevice; + m_processor = m_busDevice->GetProcessor(); } bool CCECCommandHandler::HandleCommand(const cec_command &command) @@ -49,7 +50,7 @@ bool CCECCommandHandler::HandleCommand(const cec_command &command) bool bHandled(true); CStdString strLog; - strLog.Format(">> %s (%X) -> %s (%X): %s (%2X)", m_busDevice->GetProcessor()->ToString(command.initiator), command.initiator, m_busDevice->GetProcessor()->ToString(command.destination), command.destination, m_busDevice->GetProcessor()->ToString(command.opcode), command.opcode); + strLog.Format(">> %s (%X) -> %s (%X): %s (%2X)", m_processor->ToString(command.initiator), command.initiator, m_processor->ToString(command.destination), command.destination, m_processor->ToString(command.opcode), command.opcode); m_busDevice->AddLog(CEC_LOG_NOTICE, strLog); switch(command.opcode) @@ -153,7 +154,7 @@ bool CCECCommandHandler::HandleCommand(const cec_command &command) break; } - m_busDevice->GetProcessor()->AddCommand(command); + m_processor->AddCommand(command); return bHandled; } @@ -162,7 +163,7 @@ bool CCECCommandHandler::HandleActiveSource(const cec_command &command) if (command.parameters.size == 2) { uint16_t iAddress = ((uint16_t)command.parameters[0] << 8) | ((uint16_t)command.parameters[1]); - return m_busDevice->GetProcessor()->SetStreamPath(iAddress); + return m_processor->SetStreamPath(iAddress); } return true; @@ -195,7 +196,7 @@ bool CCECCommandHandler::HandleDeviceCecVersion(const cec_command &command) bool CCECCommandHandler::HandleDeviceVendorCommandWithId(const cec_command &command) { if (m_busDevice->MyLogicalAddressContains(command.destination)) - m_busDevice->GetProcessor()->TransmitAbort(command.initiator, command.opcode, CEC_ABORT_REASON_REFUSED); + m_processor->TransmitAbort(command.initiator, command.opcode, CEC_ABORT_REASON_REFUSED); return true; } @@ -304,7 +305,7 @@ bool CCECCommandHandler::HandleGiveSystemAudioModeStatus(const cec_command &comm bool CCECCommandHandler::HandleImageViewOn(const cec_command &command) { - m_busDevice->GetProcessor()->SetActiveSource(command.initiator); + m_processor->SetActiveSource(command.initiator); return true; } @@ -390,7 +391,7 @@ bool CCECCommandHandler::HandleRoutingInformation(const cec_command &command) if (command.parameters.size == 2) { uint16_t iNewAddress = ((uint16_t)command.parameters[0] << 8) | ((uint16_t)command.parameters[1]); - m_busDevice->GetProcessor()->SetStreamPath(iNewAddress); + m_processor->SetStreamPath(iNewAddress); } return false; @@ -445,7 +446,7 @@ bool CCECCommandHandler::HandleSetStreamPath(const cec_command &command) strLog.Format(">> %i sets stream path to physical address %04x", command.initiator, iStreamAddress); m_busDevice->AddLog(CEC_LOG_DEBUG, strLog.c_str()); - if (m_busDevice->GetProcessor()->SetStreamPath(iStreamAddress)) + if (m_processor->SetStreamPath(iStreamAddress)) { CCECBusDevice *device = GetDeviceByPhysicalAddress(iStreamAddress); if (device) @@ -472,7 +473,7 @@ bool CCECCommandHandler::HandleSystemAudioModeRequest(const cec_command &command uint16_t iNewAddress = ((uint16_t)command.parameters[0] << 8) | ((uint16_t)command.parameters[1]); CCECBusDevice *newActiveDevice = GetDeviceByPhysicalAddress(iNewAddress); if (newActiveDevice) - m_busDevice->GetProcessor()->SetActiveSource(newActiveDevice->GetLogicalAddress()); + m_processor->SetActiveSource(newActiveDevice->GetLogicalAddress()); return ((CCECAudioSystem *) device)->TransmitSetSystemAudioMode(command.initiator); } else @@ -526,7 +527,7 @@ bool CCECCommandHandler::HandleSetSystemAudioMode(const cec_command &command) bool CCECCommandHandler::HandleTextViewOn(const cec_command &command) { - m_busDevice->GetProcessor()->SetActiveSource(command.initiator); + m_processor->SetActiveSource(command.initiator); return true; } @@ -534,7 +535,7 @@ bool CCECCommandHandler::HandleUserControlPressed(const cec_command &command) { if (m_busDevice->MyLogicalAddressContains(command.destination) && command.parameters.size > 0) { - m_busDevice->GetProcessor()->AddKey(); + m_processor->AddKey(); if (command.parameters[0] <= CEC_USER_CONTROL_CODE_MAX) { @@ -550,7 +551,7 @@ bool CCECCommandHandler::HandleUserControlPressed(const cec_command &command) device->SetPowerStatus(CEC_POWER_STATUS_ON); } - m_busDevice->GetProcessor()->SetCurrentButton((cec_user_control_code) command.parameters[0]); + m_processor->SetCurrentButton((cec_user_control_code) command.parameters[0]); return true; } } @@ -560,7 +561,7 @@ bool CCECCommandHandler::HandleUserControlPressed(const cec_command &command) bool CCECCommandHandler::HandleUserControlRelease(const cec_command &command) { if (m_busDevice->MyLogicalAddressContains(command.destination)) - m_busDevice->GetProcessor()->AddKey(); + m_processor->AddKey(); return true; } @@ -576,7 +577,7 @@ unsigned int CCECCommandHandler::GetMyDevices(vector &devices) { unsigned int iReturn(0); - cec_logical_addresses addresses = m_busDevice->GetProcessor()->GetLogicalAddresses(); + cec_logical_addresses addresses = m_processor->GetLogicalAddresses(); for (uint8_t iPtr = 0; iPtr < 16; iPtr++) { if (addresses[iPtr]) @@ -594,19 +595,19 @@ CCECBusDevice *CCECCommandHandler::GetDevice(cec_logical_address iLogicalAddress CCECBusDevice *device = NULL; if (iLogicalAddress >= CECDEVICE_TV && iLogicalAddress <= CECDEVICE_BROADCAST) - device = m_busDevice->GetProcessor()->m_busDevices[iLogicalAddress]; + device = m_processor->m_busDevices[iLogicalAddress]; return device; } CCECBusDevice *CCECCommandHandler::GetDeviceByPhysicalAddress(uint16_t iPhysicalAddress) const { - return m_busDevice->GetProcessor()->GetDeviceByPhysicalAddress(iPhysicalAddress); + return m_processor->GetDeviceByPhysicalAddress(iPhysicalAddress); } CCECBusDevice *CCECCommandHandler::GetDeviceByType(cec_device_type type) const { - return m_busDevice->GetProcessor()->GetDeviceByType(type); + return m_processor->GetDeviceByType(type); } void CCECCommandHandler::SetVendorId(const cec_command &command) @@ -630,14 +631,14 @@ void CCECCommandHandler::SetPhysicalAddress(cec_logical_address iAddress, uint16 { if (!m_busDevice->MyLogicalAddressContains(iAddress)) { - bool bOurAddress(m_busDevice->GetProcessor()->GetPhysicalAddress() == iNewAddress); + bool bOurAddress(m_processor->GetPhysicalAddress() == iNewAddress); GetDevice(iAddress)->SetPhysicalAddress(iNewAddress); if (bOurAddress) { /* another device reported the same physical address as ours * since we don't have physical address detection yet, we'll just use the * given address, increased by 0x100 for now */ - m_busDevice->GetProcessor()->SetPhysicalAddress(iNewAddress + 0x100); + m_processor->SetPhysicalAddress(iNewAddress + 0x100); } } } diff --git a/src/lib/implementations/CECCommandHandler.h b/src/lib/implementations/CECCommandHandler.h index 4d9a021..8fb9446 100644 --- a/src/lib/implementations/CECCommandHandler.h +++ b/src/lib/implementations/CECCommandHandler.h @@ -36,6 +36,7 @@ namespace CEC { + class CCECProcessor; class CCECBusDevice; class CCECCommandHandler @@ -89,6 +90,7 @@ namespace CEC virtual void SetVendorId(const cec_command &command); virtual void SetPhysicalAddress(cec_logical_address iAddress, uint16_t iNewAddress); + CCECProcessor *m_processor; CCECBusDevice *m_busDevice; }; };