#include "precomp.h" // // CONTROL.CPP // Control by us, control of us // // Copyright(c) Microsoft 1997- // #define MLZ_FILE_ZONE ZONE_CORE // // CA_ReceivedPacket() // void ASShare::CA_ReceivedPacket ( ASPerson * pasFrom, PS20DATAPACKET pPacket ) { PCAPACKET pCAPacket; DebugEntry(ASShare::CA_ReceivedPacket); ValidatePerson(pasFrom); pCAPacket = (PCAPACKET)pPacket; switch (pCAPacket->msg) { case CA_MSG_NOTIFY_STATE: CAHandleNewState(pasFrom, (PCANOTPACKET)pPacket); break; default: // Ignore for now -- old 2.x messages break; } DebugExitVOID(ASShare::CA_ReceivedPacket); } // // CA30_ReceivedPacket() // void ASShare::CA30_ReceivedPacket ( ASPerson * pasFrom, PS20DATAPACKET pPacket ) { LPBYTE pCAPacket; DebugEntry(ASShare::CA30_ReceivedPacket); pCAPacket = (LPBYTE)pPacket + sizeof(CA30PACKETHEADER); switch (((PCA30PACKETHEADER)pPacket)->msg) { // From VIEWER (remote) to HOST (us) case CA_REQUEST_TAKECONTROL: { CAHandleRequestTakeControl(pasFrom, (PCA_RTC_PACKET)pCAPacket); break; } // From HOST (remote) to VIEWER (us) case CA_REPLY_REQUEST_TAKECONTROL: { CAHandleReplyRequestTakeControl(pasFrom, (PCA_REPLY_RTC_PACKET)pCAPacket); break; } // From HOST (remote) to VIEWER (us) case CA_REQUEST_GIVECONTROL: { CAHandleRequestGiveControl(pasFrom, (PCA_RGC_PACKET)pCAPacket); break; } // From VIEWER (remote) to HOST (us) case CA_REPLY_REQUEST_GIVECONTROL: { CAHandleReplyRequestGiveControl(pasFrom, (PCA_REPLY_RGC_PACKET)pCAPacket); break; } // From CONTROLLER (remote) to HOST (us) case CA_PREFER_PASSCONTROL: { CAHandlePreferPassControl(pasFrom, (PCA_PPC_PACKET)pCAPacket); break; } // From CONTROLLER (remote) to HOST (us) case CA_INFORM_RELEASEDCONTROL: { CAHandleInformReleasedControl(pasFrom, (PCA_INFORM_PACKET)pCAPacket); break; } // From HOST (remote) to CONTROLLER (us) case CA_INFORM_REVOKEDCONTROL: { CAHandleInformRevokedControl(pasFrom, (PCA_INFORM_PACKET)pCAPacket); break; } default: { WARNING_OUT(("CA30_ReceivedPacket: unrecognized message %d", ((PCA30PACKETHEADER)pPacket)->msg)); break; } } DebugExitVOID(ASShare::CA30_ReceivedPacket); } // // CANewRequestID() // // Returns a new token. It uses the current value, fills in the new one, and // also returns the new one. We wrap around if necessary. ZERO is never // valid. Note that this is a unique identifier only to us. // // It is a stamp for the control operation. Since you can't be controlling // and controlled at the same time, we have one stamp for all ops. // UINT ASShare::CANewRequestID(void) { DebugEntry(ASShare::CANewRequestID); ++(m_pasLocal->m_caControlID); if (m_pasLocal->m_caControlID == 0) { ++(m_pasLocal->m_caControlID); } DebugExitDWORD(ASShare::CANewRequestID, m_pasLocal->m_caControlID); return(m_pasLocal->m_caControlID); } // // CA_ViewStarting() // Called when a REMOTE starts hosting // // We only do anything if it's a 2.x node since they could be cooperating // but not hosting. // BOOL ASShare::CA_ViewStarting(ASPerson * pasPerson) { DebugEntry(ASShare::CA_ViewStarting); DebugExitBOOL(ASShare::CA_ViewStarting, TRUE); return(TRUE); } // // CA_ViewEnded() // Called when a REMOTE stopped hosting // void ASShare::CA_ViewEnded(ASPerson * pasPerson) { PCAREQUEST pRequest; PCAREQUEST pNext; DebugEntry(ASShare::CA_ViewEnded); // // Clear any control stuff we are a part of where they are the host // CA_ClearLocalState(CACLEAR_VIEW, pasPerson, FALSE); // // Clear any control stuff involving remotes // if (pasPerson->m_caControlledBy) { ASSERT(pasPerson->m_caControlledBy != m_pasLocal); CAClearHostState(pasPerson, NULL); ASSERT(!pasPerson->m_caControlledBy); } pasPerson->m_caAllowControl = FALSE; // // Clean up outstanding control packets to this person // pRequest = (PCAREQUEST)COM_BasedListFirst(&m_caQueuedMsgs, FIELD_OFFSET(CAREQUEST, chain)); while (pRequest) { pNext = (PCAREQUEST)COM_BasedListNext(&m_caQueuedMsgs, pRequest, FIELD_OFFSET(CAREQUEST, chain)); if (pRequest->destID == pasPerson->mcsID) { // // Delete messages sent by us to this person who is hosting // switch (pRequest->msg) { case CA_REQUEST_TAKECONTROL: case CA_PREFER_PASSCONTROL: case CA_REPLY_REQUEST_GIVECONTROL: WARNING_OUT(("Deleting viewer control message %d, person [%d] stopped hosting", pRequest->msg, pasPerson->mcsID)); COM_BasedListRemove(&pRequest->chain); delete pRequest; break; } } pRequest = pNext; } DebugExitVOID(ASView::CA_ViewEnded); } // // CA_PartyLeftShare() // void ASShare::CA_PartyLeftShare(ASPerson * pasPerson) { DebugEntry(ASShare::CA_PartyLeftShare); ValidatePerson(pasPerson); // // We must have cleaned up hosting info for this person already. // So it can't be controlled or controllable. // ASSERT(!pasPerson->m_caAllowControl); ASSERT(!pasPerson->m_caControlledBy); if (pasPerson != m_pasLocal) { PCAREQUEST pRequest; PCAREQUEST pNext; // // Clear any control stuff we are a part of where they are the // viewer. // CA_ClearLocalState(CACLEAR_HOST, pasPerson, FALSE); // // Clear any control stuff involving remotes // if (pasPerson->m_caInControlOf) { ASSERT(pasPerson->m_caInControlOf != m_pasLocal); CAClearHostState(pasPerson->m_caInControlOf, NULL); } // // Clean up outgoing packets meant for this person. // pRequest = (PCAREQUEST)COM_BasedListFirst(&m_caQueuedMsgs, FIELD_OFFSET(CAREQUEST, chain)); while (pRequest) { pNext = (PCAREQUEST)COM_BasedListNext(&m_caQueuedMsgs, pRequest, FIELD_OFFSET(CAREQUEST, chain)); // // This doesn't need to know if it's a 2.x or 3.0 request, // simply remove queued packets intended for somebody leaving. // // Only GRANTED_CONTROL requests will have non-zero destIDs of // the 2.x packets. // if (pRequest->destID == pasPerson->mcsID) { WARNING_OUT(("Freeing outgoing RESPONSE to node [%d]", pasPerson->mcsID)); COM_BasedListRemove(&(pRequest->chain)); delete pRequest; } pRequest = pNext; } ASSERT(m_caWaitingForReplyFrom != pasPerson); } else { // // When our waiting for/controlled dude stopped sharing, we should // have cleaned this goop up. // ASSERT(!pasPerson->m_caInControlOf); ASSERT(!pasPerson->m_caControlledBy); ASSERT(!m_caWaitingForReplyFrom); ASSERT(!m_caWaitingForReplyMsg); // // There should be NO outgoing control requests // ASSERT(COM_BasedListIsEmpty(&(m_caQueuedMsgs))); } DebugExitVOID(ASShare::CA_PartyLeftShare); } // // CA_Periodic() -> SHARE STUFF // void ASShare::CA_Periodic(void) { DebugEntry(ASShare::CA_Periodic); // // Flush as many queued outgoing messages as we can // CAFlushOutgoingPackets(); DebugExitVOID(ASShare::CA_Periodic); } // // CA_SyncAlreadyHosting() // void ASHost::CA_SyncAlreadyHosting(void) { DebugEntry(ASHost::CA_SyncAlreadyHosting); m_caRetrySendState = TRUE; DebugExitVOID(ASHost::CA_SyncAlreadyHosting); } // // CA_Periodic() -> HOSTING STUFF // void ASHost::CA_Periodic(void) { DebugEntry(ASHost::CA_Periodic); if (m_caRetrySendState) { PCANOTPACKET pPacket; #ifdef _DEBUG UINT sentSize; #endif // _DEBUG pPacket = (PCANOTPACKET)m_pShare->SC_AllocPkt(PROT_STR_MISC, g_s20BroadcastID, sizeof(*pPacket)); if (!pPacket) { WARNING_OUT(("CA_Periodic: couldn't broadcast new state")); } else { pPacket->header.data.dataType = DT_CA; pPacket->msg = CA_MSG_NOTIFY_STATE; pPacket->state = 0; if (m_pShare->m_pasLocal->m_caAllowControl) pPacket->state |= CASTATE_ALLOWCONTROL; if (m_pShare->m_pasLocal->m_caControlledBy) pPacket->controllerID = m_pShare->m_pasLocal->m_caControlledBy->mcsID; else pPacket->controllerID = 0; #ifdef _DEBUG sentSize = #endif // _DEBUG m_pShare->DCS_CompressAndSendPacket(PROT_STR_MISC, g_s20BroadcastID, &(pPacket->header), sizeof(*pPacket)); m_caRetrySendState = FALSE; } } DebugExitVOID(ASHost::CA_Periodic); } // // CAFlushOutgoingPackets() // // This tries to send private packets (not broadcast notifications) that // we have accumulated. It returns TRUE if the outgoing queue is empty. // BOOL ASShare::CAFlushOutgoingPackets(void) { BOOL fEmpty = TRUE; PCAREQUEST pRequest; // // If we're hosting and haven't yet flushed the HET or CA state, // force queueing. // if (m_hetRetrySendState || (m_pHost && m_pHost->m_caRetrySendState)) { TRACE_OUT(("CAFlushOutgoingPackets: force queuing, pending HET/CA state broadcast")); fEmpty = FALSE; DC_QUIT; } while (pRequest = (PCAREQUEST)COM_BasedListFirst(&m_caQueuedMsgs, FIELD_OFFSET(CAREQUEST, chain))) { // // Allocate/send packet // if (!CASendPacket(pRequest->destID, pRequest->msg, &pRequest->req30.packet)) { WARNING_OUT(("CAFlushOutgoingPackets: couldn't send request")); fEmpty = FALSE; break; } // // Do we do state transitions here or when things are added to queue? // requestID, results are calculated when put on queue. Results can // change though based on a future action. // COM_BasedListRemove(&(pRequest->chain)); delete pRequest; } DC_EXIT_POINT: DebugExitBOOL(CAFlushOutgoingPackets, fEmpty); return(fEmpty); } // // CASendPacket() // This sends a private message (request or response) to the destination. // If there are queued private messages in front of this one, or we can't // send it, we add it to the pending queue. // // This TRUE if sent. // // It's up to the caller to change state info appropriately. // BOOL ASShare::CASendPacket ( UINT destID, UINT msg, PCA30P pData ) { BOOL fSent = FALSE; PCA30PACKETHEADER pPacket; #ifdef _DEBUG UINT sentSize; #endif // _DEBUG DebugEntry(ASShare::CASendPacket); // // Note that CA30P does not include size of header. // pPacket = (PCA30PACKETHEADER)SC_AllocPkt(PROT_STR_INPUT, destID, sizeof(CA30PACKETHEADER) + sizeof(*pData)); if (!pPacket) { WARNING_OUT(("CASendPacket: no memory to send %d packet to [%d]", msg, destID)); DC_QUIT; } pPacket->header.data.dataType = DT_CA30; pPacket->msg = msg; memcpy(pPacket+1, pData, sizeof(*pData)); #ifdef _DEBUG sentSize = #endif // _DEBUG DCS_CompressAndSendPacket(PROT_STR_INPUT, destID, &(pPacket->header), sizeof(*pPacket)); TRACE_OUT(("CA30 request packet size: %08d, sent %08d", sizeof(*pPacket), sentSize)); fSent = TRUE; DC_EXIT_POINT: DebugExitBOOL(ASShare::CASendPacket, fSent); return(fSent); } // // CAQueueSendPacket() // This flushes pending queued requests if there are any, then tries to // send this one. If it can't, we add it to the queue. If there's not any // memory even for that, we return an error about it. // BOOL ASShare::CAQueueSendPacket ( UINT destID, UINT msg, PCA30P pPacketSend ) { BOOL rc = TRUE; PCAREQUEST pCARequest; DebugEntry(ASShare::CAQueueSendPacket); // // These must go out in order. So if any queued messages are still // present, those must be sent first. // if (!CAFlushOutgoingPackets() || !CASendPacket(destID, msg, pPacketSend)) { // // We must queue this. // TRACE_OUT(("CAQueueSendPacket: queuing request for send later")); pCARequest = new CAREQUEST; if (!pCARequest) { ERROR_OUT(("CAQueueSendPacket: can't even allocate memory to queue request; must fail")); rc = FALSE; } else { SET_STAMP(pCARequest, CAREQUEST); pCARequest->destID = destID; pCARequest->msg = msg; pCARequest->req30.packet = *pPacketSend; // // Stick this at the end of the queue // COM_BasedListInsertBefore(&(m_caQueuedMsgs), &(pCARequest->chain)); } } DebugExitBOOL(ASShare::CAQueueSendPacket, rc); return(rc); } // // CALangToggle() // // This temporarily turns off the keyboard language toggle key, so that a // remote controlling us doesn't inadvertently change it. When we stop being // controlled, we put it back. // void ASShare::CALangToggle(BOOL fBackOn) { // // Local Variables // LONG rc; HKEY hkeyToggle; BYTE regValue[2]; DWORD cbRegValue; DWORD dwType; LPCSTR szValue; DebugEntry(ASShare::CALangToggle); szValue = (g_asWin95) ? NULL : LANGUAGE_TOGGLE_KEY_VAL; if (fBackOn) { // // We are gaining control of our local keyboard again - we restore the // language togging functionality. // // We must directly access the registry to accomplish this. // if (m_caToggle != LANGUAGE_TOGGLE_NOT_PRESENT) { rc = RegOpenKey(HKEY_CURRENT_USER, LANGUAGE_TOGGLE_KEY, &hkeyToggle); if (rc == ERROR_SUCCESS) { // // Clear the value for this key. // regValue[0] = m_caToggle; regValue[1] = '\0'; // ensure NUL termination // // Restore the value. // RegSetValueEx(hkeyToggle, szValue, 0, REG_SZ, regValue, sizeof(regValue)); // // We need to inform the system about this change. We do not // tell any other apps about this (ie do not set any of the // notification flags as the last parm) // SystemParametersInfo(SPI_SETLANGTOGGLE, 0, 0, 0); } RegCloseKey(hkeyToggle); } } else { // // We are losing control of our keyboard - ensure that remote key // events will not change our local keyboard settings by disabling the // keyboard language toggle. // // We must directly access the registry to accomplish this. // rc = RegOpenKey(HKEY_CURRENT_USER, LANGUAGE_TOGGLE_KEY, &hkeyToggle); if (rc == ERROR_SUCCESS) { cbRegValue = sizeof(regValue); rc = RegQueryValueEx(hkeyToggle, szValue, NULL, &dwType, regValue, &cbRegValue); if (rc == ERROR_SUCCESS) { m_caToggle = regValue[0]; // // Clear the value for this key. // regValue[0] = '3'; regValue[1] = '\0'; // ensure NUL termination // // Clear the value. // RegSetValueEx(hkeyToggle, szValue, 0, REG_SZ, regValue, sizeof(regValue)); // // We need to inform the system about this change. We do not // tell any other apps about this (ie do not set any of the // notification flags as the last parm) // SystemParametersInfo(SPI_SETLANGTOGGLE, 0, 0, 0); } else { m_caToggle = LANGUAGE_TOGGLE_NOT_PRESENT; } RegCloseKey(hkeyToggle); } } DebugExitVOID(ASShare::CALangToggle); } // // CAStartControlled() // void ASShare::CAStartControlled ( ASPerson * pasInControl, UINT controlID ) { DebugEntry(ASShare::CAStartControlled); ValidatePerson(pasInControl); // // Undo last known state of remote // CAClearRemoteState(pasInControl); // // Get any VIEW frame UI out of the way // VIEWStartControlled(TRUE); ASSERT(!m_pasLocal->m_caControlledBy); m_pasLocal->m_caControlledBy = pasInControl; ASSERT(!pasInControl->m_caInControlOf); pasInControl->m_caInControlOf = m_pasLocal; ASSERT(!pasInControl->m_caControlID); ASSERT(controlID); pasInControl->m_caControlID = controlID; // // Notify IM. // IM_Controlled(pasInControl); // // Disable language toggling. // CALangToggle(FALSE); ASSERT(m_pHost); m_pHost->CM_Controlled(pasInControl); // // Notify the UI. Pass GCCID of controller // DCS_NotifyUI(SH_EVT_STARTCONTROLLED, pasInControl->cpcCaps.share.gccID, 0); // // Broadcast new state // m_pHost->m_caRetrySendState = TRUE; m_pHost->CA_Periodic(); DebugExitVOID(ASShare::CAStartControlled); } // // CAStopControlled() // void ASShare::CAStopControlled(void) { ASPerson * pasControlledBy; DebugEntry(ASShare::CAStopControlled); pasControlledBy = m_pasLocal->m_caControlledBy; ValidatePerson(pasControlledBy); m_pasLocal->m_caControlledBy = NULL; ASSERT(pasControlledBy->m_caInControlOf == m_pasLocal); pasControlledBy->m_caInControlOf = NULL; ASSERT(pasControlledBy->m_caControlID); pasControlledBy->m_caControlID = 0; // // Notify IM. // IM_Controlled(NULL); // // Restore language toggling functionality. // CALangToggle(TRUE); ASSERT(m_pHost); m_pHost->CM_Controlled(NULL); VIEWStartControlled(FALSE); // // Notify the UI // DCS_NotifyUI(SH_EVT_STOPCONTROLLED, pasControlledBy->cpcCaps.share.gccID, 0); // // Broadcast the new state // m_pHost->m_caRetrySendState = TRUE; m_pHost->CA_Periodic(); DebugExitVOID(ASShare::CAStopControlled); } // // CAStartInControl() // void ASShare::CAStartInControl ( ASPerson * pasControlled, UINT controlID ) { DebugEntry(ASShare::CAStartInControl); ValidatePerson(pasControlled); // // Undo last known state of host // CAClearRemoteState(pasControlled); ASSERT(!m_pasLocal->m_caInControlOf); m_pasLocal->m_caInControlOf = pasControlled; ASSERT(!pasControlled->m_caControlledBy); pasControlled->m_caControlledBy = m_pasLocal; ASSERT(!pasControlled->m_caControlID); ASSERT(controlID); pasControlled->m_caControlID = controlID; ASSERT(!g_lpimSharedData->imControlled); IM_InControl(pasControlled); VIEW_InControl(pasControlled, TRUE); // // Pass GCC ID of node we're controlling // DCS_NotifyUI(SH_EVT_STARTINCONTROL, pasControlled->cpcCaps.share.gccID, 0); DebugExitVOID(ASShare::CAStartInControl); } // // CAStopInControl() // void ASShare::CAStopInControl(void) { ASPerson * pasInControlOf; DebugEntry(ASShare::CAStopInControl); pasInControlOf = m_pasLocal->m_caInControlOf; ValidatePerson(pasInControlOf); m_pasLocal->m_caInControlOf = NULL; ASSERT(pasInControlOf->m_caControlledBy == m_pasLocal); pasInControlOf->m_caControlledBy = NULL; ASSERT(pasInControlOf->m_caControlID); pasInControlOf->m_caControlID = 0; ASSERT(!g_lpimSharedData->imControlled); IM_InControl(NULL); VIEW_InControl(pasInControlOf, FALSE); DCS_NotifyUI(SH_EVT_STOPINCONTROL, pasInControlOf->cpcCaps.share.gccID, 0); DebugExitVOID(ASShare::CAStopInControl); } // // CA_AllowControl() // Allows/disallows remotes from controlling us. // void ASShare::CA_AllowControl(BOOL fAllow) { DebugEntry(ASShare::CA_AllowControl); if (!m_pHost) { WARNING_OUT(("CA_AllowControl: ignoring, we aren't hosting")); DC_QUIT; } if (fAllow != m_pasLocal->m_caAllowControl) { if (!fAllow) { // Undo pending control/control queries/being controlled stuff CA_ClearLocalState(CACLEAR_HOST, NULL, TRUE); } m_pasLocal->m_caAllowControl = fAllow; DCS_NotifyUI(SH_EVT_CONTROLLABLE, fAllow, 0); m_pHost->m_caRetrySendState = TRUE; } DC_EXIT_POINT: DebugExitVOID(ASShare::CA_AllowControl); } // // CA_HostEnded() // // When we stop hosting, we do not need to flush queued control // responses. But we need to delete them! // void ASHost::CA_HostEnded(void) { PCAREQUEST pCARequest; PCAREQUEST pCANext; DebugEntry(ASHost::CA_HostEnded); m_pShare->CA_ClearLocalState(CACLEAR_HOST, NULL, FALSE); // // Delete now obsolete messages originating from us as host. // pCARequest = (PCAREQUEST)COM_BasedListFirst(&m_pShare->m_caQueuedMsgs, FIELD_OFFSET(CAREQUEST, chain)); while (pCARequest) { pCANext = (PCAREQUEST)COM_BasedListNext(&m_pShare->m_caQueuedMsgs, pCARequest, FIELD_OFFSET(CAREQUEST, chain)); switch (pCARequest->msg) { // // Delete messages sent by us when we are hosting. // case CA_INFORM_PAUSEDCONTROL: case CA_INFORM_UNPAUSEDCONTROL: case CA_REPLY_REQUEST_TAKECONTROL: case CA_REQUEST_GIVECONTROL: WARNING_OUT(("Deleting host control message %d, we stopped hosting", pCARequest->msg)); COM_BasedListRemove(&pCARequest->chain); delete pCARequest; break; } pCARequest = pCANext; } if (m_pShare->m_pasLocal->m_caAllowControl) { m_pShare->m_pasLocal->m_caAllowControl = FALSE; DCS_NotifyUI(SH_EVT_CONTROLLABLE, FALSE, 0); } DebugExitVOID(ASHost::CA_HostEnded); } // // CA_TakeControl() // // Called by viewer to ask to take control of host. Note parallels to // CA_GiveControl(), which is called by host to get same result. // void ASShare::CA_TakeControl(ASPerson * pasHost) { DebugEntry(ASShare::CA_TakeControl); ValidatePerson(pasHost); ASSERT(pasHost != m_pasLocal); // // If this person isn't hosting or controllable, fail. // if (!pasHost->m_pView) { WARNING_OUT(("CA_TakeControl: failing, person [%d] not hosting", pasHost->mcsID)); DC_QUIT; } if (!pasHost->m_caAllowControl) { WARNING_OUT(("CA_TakeControl: failing, host [%d] not controllable", pasHost->mcsID)); DC_QUIT; } // // Undo current state. // CA_ClearLocalState(CACLEAR_ALL, NULL, TRUE); // // Now take control. // { // // 3.0 host // CA30P packetSend; ZeroMemory(&packetSend, sizeof(packetSend)); packetSend.rtc.viewerControlID = CANewRequestID(); if (CAQueueSendPacket(pasHost->mcsID, CA_REQUEST_TAKECONTROL, &packetSend)) { // // Now we're in waiting state. // CAStartWaiting(pasHost, CA_REPLY_REQUEST_TAKECONTROL); VIEW_UpdateStatus(pasHost, IDS_STATUS_WAITINGFORCONTROL); } else { WARNING_OUT(("CA_TakeControl of [%d]: failing, out of memory", pasHost->mcsID)); } } DC_EXIT_POINT: DebugExitVOID(ASShare::CA_TakeControl); } // // CA_CancelTakeControl() // void ASShare::CA_CancelTakeControl ( ASPerson * pasHost, BOOL fPacket ) { DebugEntry(ASShare::CA_CancelTakeControl); ValidatePerson(pasHost); ASSERT(pasHost != m_pasLocal); if ((m_caWaitingForReplyFrom != pasHost) || (m_caWaitingForReplyMsg != CA_REPLY_REQUEST_TAKECONTROL)) { // We're not waiting for control of this host. WARNING_OUT(("CA_CancelTakeControl failing; not waiting to take control of [%d]", pasHost->mcsID)); DC_QUIT; } ASSERT(pasHost->m_caControlID == 0); if (fPacket) { CA30P packetSend; ZeroMemory(&packetSend, sizeof(packetSend)); packetSend.inform.viewerControlID = m_pasLocal->m_caControlID; packetSend.inform.hostControlID = pasHost->m_caControlID; if (!CAQueueSendPacket(pasHost->mcsID, CA_INFORM_RELEASEDCONTROL, &packetSend)) { WARNING_OUT(("Couldn't tell node [%d] we're no longer waiting for control", pasHost->mcsID)); } } m_caWaitingForReplyFrom = NULL; m_caWaitingForReplyMsg = 0; VIEW_UpdateStatus(pasHost, IDS_STATUS_NONE); DC_EXIT_POINT: DebugExitVOID(ASShare::CA_CancelTakeControl); } // // CA_ReleaseControl() // void ASShare::CA_ReleaseControl ( ASPerson * pasHost, BOOL fPacket ) { DebugEntry(ASShare::CA_ReleaseControl); ValidatePerson(pasHost); ASSERT(pasHost != m_pasLocal); if (pasHost->m_caControlledBy != m_pasLocal) { // We're not in control of this dude, nothing to do. WARNING_OUT(("CA_ReleaseControl failing; not in control of [%d]", pasHost->mcsID)); DC_QUIT; } ASSERT(!m_caWaitingForReplyFrom); ASSERT(!m_caWaitingForReplyMsg); if (fPacket) { CA30P packetSend; ZeroMemory(&packetSend, sizeof(packetSend)); packetSend.inform.viewerControlID = m_pasLocal->m_caControlID; packetSend.inform.hostControlID = pasHost->m_caControlID; if (!CAQueueSendPacket(pasHost->mcsID, CA_INFORM_RELEASEDCONTROL, &packetSend)) { WARNING_OUT(("Couldn't tell node [%d] they're no longer controlled", pasHost->mcsID)); } } CAStopInControl(); DC_EXIT_POINT: DebugExitVOID(ASShare::CA_ReleaseControl); } // // CA_PassControl() // void ASShare::CA_PassControl(ASPerson * pasHost, ASPerson * pasViewer) { CA30P packetSend; DebugEntry(ASShare::CA_PassControl); ValidatePerson(pasHost); ValidatePerson(pasViewer); ASSERT(pasHost != pasViewer); ASSERT(pasHost != m_pasLocal); ASSERT(pasViewer != m_pasLocal); if (pasHost->m_caControlledBy != m_pasLocal) { WARNING_OUT(("CA_PassControl: failing, we're not in control of [%d]", pasHost->mcsID)); DC_QUIT; } ASSERT(!m_caWaitingForReplyFrom); ASSERT(!m_caWaitingForReplyMsg); ZeroMemory(&packetSend, sizeof(packetSend)); packetSend.ppc.viewerControlID = m_pasLocal->m_caControlID; packetSend.ppc.hostControlID = pasHost->m_caControlID; packetSend.ppc.mcsPassTo = pasViewer->mcsID; if (CAQueueSendPacket(pasHost->mcsID, CA_PREFER_PASSCONTROL, &packetSend)) { CAStopInControl(); } else { WARNING_OUT(("Couldn't tell node [%d] we want them to pass control to [%d]", pasHost->mcsID, pasViewer->mcsID)); } DC_EXIT_POINT: DebugExitVOID(ASShare::CA_PassControl); } // // CA_GiveControl() // // Called by host to ask to grant control to viewer. Note parallels to // CA_TakeControl(), which is called by viewer to get same result. // void ASShare::CA_GiveControl(ASPerson * pasTo) { CA30P packetSend; DebugEntry(ASShare::CA_GiveControl); ValidatePerson(pasTo); ASSERT(pasTo != m_pasLocal); // // If we aren't hosting or controllable, fail. // if (!m_pHost) { WARNING_OUT(("CA_GiveControl: failing, we're not hosting")); DC_QUIT; } if (!m_pasLocal->m_caAllowControl) { WARNING_OUT(("CA_GiveControl: failing, we're not controllable")); DC_QUIT; } // // Undo our control state. // CA_ClearLocalState(CACLEAR_ALL, NULL, TRUE); // // Now invite control. // ZeroMemory(&packetSend, sizeof(packetSend)); packetSend.rgc.hostControlID = CANewRequestID(); packetSend.rgc.mcsPassFrom = 0; if (CAQueueSendPacket(pasTo->mcsID, CA_REQUEST_GIVECONTROL, &packetSend)) { // // Now we're in waiting state. // CAStartWaiting(pasTo, CA_REPLY_REQUEST_GIVECONTROL); } else { WARNING_OUT(("CA_GiveControl of [%d]: failing, out of memory", pasTo->mcsID)); } DC_EXIT_POINT: DebugExitVOID(ASShare::CA_GiveControl); } // // CA_CancelGiveControl() // Cancels an invite TAKE or PASS request. // void ASShare::CA_CancelGiveControl ( ASPerson * pasTo, BOOL fPacket ) { DebugEntry(ASShare::CA_CancelGiveControl); ValidatePerson(pasTo); ASSERT(pasTo != m_pasLocal); // // Have we invited this person, and are we now waiting for a response? // if ((m_caWaitingForReplyFrom != pasTo) || (m_caWaitingForReplyMsg != CA_REPLY_REQUEST_GIVECONTROL)) { // We're not waiting to be controlled by this viewer. WARNING_OUT(("CA_CancelGiveControl failing; not waiting to give control to [%d]", pasTo->mcsID)); DC_QUIT; } ASSERT(!pasTo->m_caControlID); if (fPacket) { CA30P packetSend; ZeroMemory(&packetSend, sizeof(packetSend)); packetSend.inform.viewerControlID = pasTo->m_caControlID; packetSend.inform.hostControlID = m_pasLocal->m_caControlID; if (!CAQueueSendPacket(pasTo->mcsID, CA_INFORM_REVOKEDCONTROL, &packetSend)) { WARNING_OUT(("Couldn't tell node [%d] they're no longer invited to control us", pasTo->mcsID)); } } m_caWaitingForReplyFrom = NULL; m_caWaitingForReplyMsg = 0; DC_EXIT_POINT: DebugExitVOID(ASShare::CA_CancelGiveControl); } // // CA_RevokeControl() // Takes control back. If we're cleaning up (we've stopped hosting or // // void ASShare::CA_RevokeControl ( ASPerson * pasInControl, BOOL fPacket ) { CA30P packetSend; PCAREQUEST pRequest; DebugEntry(ASShare::CA_RevokeControl); // // If the response to pasController is still queued, simply delete it. // There should NOT be any CARESULT_CONFIRMED responses left. // // Otherwise, if it wasn't found, we must send a packet. // ValidatePerson(pasInControl); ASSERT(pasInControl != m_pasLocal); if (pasInControl != m_pasLocal->m_caControlledBy) { WARNING_OUT(("CA_RevokeControl: node [%d] not in control of us", pasInControl->mcsID)); DC_QUIT; } // // Take control back if we're being controlled // if (fPacket) { // // Regardless of whether we can queue or not, we get control back! // Note that we use the controller's request ID, so he knows if // this is still applicable. // ZeroMemory(&packetSend, sizeof(packetSend)); packetSend.inform.viewerControlID = pasInControl->m_caControlID; packetSend.inform.hostControlID = m_pasLocal->m_caControlID; if (!CAQueueSendPacket(pasInControl->mcsID, CA_INFORM_REVOKEDCONTROL, &packetSend)) { WARNING_OUT(("Couldn't tell node [%d] they're no longer in control", pasInControl->mcsID)); } } CAStopControlled(); DC_EXIT_POINT: DebugExitVOID(ASShare::CA_RevokeControl); } // // CAHandleRequestTakeControl() // WE are HOST, REMOTE is VIEWER // Handles incoming take control request. If our state is good, we accept. // void ASShare::CAHandleRequestTakeControl ( ASPerson * pasViewer, PCA_RTC_PACKET pPacketRecv ) { UINT result = CARESULT_CONFIRMED; DebugEntry(ASShare::CAHandleRequestTakeControl); ValidatePerson(pasViewer); // // If we aren't hosting, or haven't turned allow control on, we're // not controllable. // if (!m_pHost || !m_pasLocal->m_caAllowControl) { result = CARESULT_DENIED_WRONGSTATE; goto RESPOND_PACKET; } // // Are we doing something else right now? Waiting to hear back about // something? // if (m_caWaitingForReplyFrom) { result = CARESULT_DENIED_BUSY; goto RESPOND_PACKET; } if (m_caQueryDlg) { result = CARESULT_DENIED_BUSY; goto RESPOND_PACKET; } // // LAURABU TEMPORARY: // In a bit, if we're controlled when a new control request comes in, // pause control then allow host to handle it. // if (m_pasLocal->m_caControlledBy) { result = CARESULT_DENIED_BUSY; goto RESPOND_PACKET; } // // Try to put up query dialog // if (!CAStartQuery(pasViewer, CA_REQUEST_TAKECONTROL, (PCA30P)pPacketRecv)) { result = CARESULT_DENIED; } RESPOND_PACKET: if (result != CARESULT_CONFIRMED) { // Instant failure. CACompleteRequestTakeControl(pasViewer, pPacketRecv, result); } else { // // We're in a waiting state. CACompleteRequestTakeControl() will // complete later or the request will just go away. // } DebugExitVOID(ASShare::CAHandleRequestTakeControl); } // // CACompleteRequestTakeControl() // WE are HOST, REMOTE is VIEWER // Completes the take control request. // void ASShare::CACompleteRequestTakeControl ( ASPerson * pasFrom, PCA_RTC_PACKET pPacketRecv, UINT result ) { CA30P packetSend; DebugEntry(ASShare::CACompleteRequestTakeControl); ValidatePerson(pasFrom); ZeroMemory(&packetSend, sizeof(packetSend)); packetSend.rrtc.viewerControlID = pPacketRecv->viewerControlID; packetSend.rrtc.result = result; if (result == CARESULT_CONFIRMED) { packetSend.rrtc.hostControlID = CANewRequestID(); } if (CAQueueSendPacket(pasFrom->mcsID, CA_REPLY_REQUEST_TAKECONTROL, &packetSend)) { if (result == CARESULT_CONFIRMED) { // Clear current state, whatever that is. CA_ClearLocalState(CACLEAR_ALL, NULL, TRUE); // We are now controlled by the sender. CAStartControlled(pasFrom, pPacketRecv->viewerControlID); } else { WARNING_OUT(("Denying REQUEST TAKE CONTROL from [%d] with reason %d", pasFrom->mcsID, result)); } } else { WARNING_OUT(("Reply to REQUEST TAKE CONTROL from [%d] failing, out of memory", pasFrom->mcsID)); } DebugExitVOID(ASShare::CACompleteRequestTakeControl); } // // CAHandleReplyRequestTakeControl() // WE are VIEWER, REMOTE is HOST // Handles reply to previous take control request. // void ASShare::CAHandleReplyRequestTakeControl ( ASPerson * pasHost, PCA_REPLY_RTC_PACKET pPacketRecv ) { DebugEntry(ASShare::CAHandleReplyRequestTakeControl); ValidatePerson(pasHost); if (pPacketRecv->result == CARESULT_CONFIRMED) { // On success, should have valid op ID. ASSERT(pPacketRecv->hostControlID); } else { // On failure, should have invalid op ID. ASSERT(!pPacketRecv->hostControlID); } // // Is this response for the current control op? // if ((m_caWaitingForReplyFrom != pasHost) || (m_caWaitingForReplyMsg != CA_REPLY_REQUEST_TAKECONTROL)) { WARNING_OUT(("Ignoring TAKE CONTROL REPLY from [%d], not waiting for one", pasHost->mcsID)); DC_QUIT; } if (pPacketRecv->viewerControlID != m_pasLocal->m_caControlID) { WARNING_OUT(("Ignoring TAKE CONTROL REPLY from [%d], request %d is out of date", pasHost->mcsID, pPacketRecv->viewerControlID)); DC_QUIT; } ASSERT(!m_caQueryDlg); // // Cleanup waiting state (for both failure & success) // CA_CancelTakeControl(pasHost, FALSE); ASSERT(!m_caWaitingForReplyFrom); ASSERT(!m_caWaitingForReplyMsg); if (pPacketRecv->result == CARESULT_CONFIRMED) { // Success! We're now in control of the host. // Make sure our own state is OK ASSERT(!m_pasLocal->m_caControlledBy); ASSERT(!m_pasLocal->m_caInControlOf); CAStartInControl(pasHost, pPacketRecv->hostControlID); } else { UINT ids; WARNING_OUT(("TAKE CONTROL REPLY from host [%d] is failure %d", pasHost->mcsID, pPacketRecv->result)); ids = IDS_ERR_TAKECONTROL_MIN + pPacketRecv->result; if ((ids < IDS_ERR_TAKECONTROL_FIRST) || (ids > IDS_ERR_TAKECONTROL_LAST)) ids = IDS_ERR_TAKECONTROL_LAST; VIEW_Message(pasHost, ids); } DC_EXIT_POINT: DebugExitVOID(ASShare::CAHandleReplyRequestTakeControl); } // // CAHandleRequestGiveControl() // WE are VIEWER, REMOTE is HOST // Handles incoming take control invite. If our state is good, we accept. // // NOTE how similar this routine is to CAHandleRequestTakeControl(). They // are inverses of each other. With RequestTake/Reply sequence, viewer // initiates, host finishes. With RequestGive/Reply sequence, host initiates, // viewer finishes. Both end up with viewer in control of host when // completed successfully. // void ASShare::CAHandleRequestGiveControl ( ASPerson * pasHost, PCA_RGC_PACKET pPacketRecv ) { UINT result = CARESULT_CONFIRMED; DebugEntry(ASShare::CAHandleRequestGiveControl); ValidatePerson(pasHost); // // Is this node hosting as far as we know. If not, or has not turned // on allow control, we can't do it. // if (!pasHost->m_pView) { WARNING_OUT(("GIVE CONTROL went ahead of HOSTING, that's bad")); result = CARESULT_DENIED_WRONGSTATE; goto RESPOND_PACKET; } if (!pasHost->m_caAllowControl) { // // We haven't got an AllowControl notification yet, this info is // more up to-date. Make use of it. // WARNING_OUT(("GIVE CONTROL went ahead of ALLOW CONTROL, that's kind of bad")); result = CARESULT_DENIED_WRONGSTATE; goto RESPOND_PACKET; } // // Are we doing something else right now? Waiting to hear back about // something? // if (m_caWaitingForReplyFrom) { result = CARESULT_DENIED_BUSY; goto RESPOND_PACKET; } if (m_caQueryDlg) { result = CARESULT_DENIED_BUSY; goto RESPOND_PACKET; } // // LAURABU TEMPORARY: // In a bit, if we're controlled when a new control request comes in, // pause control then allow host to handle it. // if (m_pasLocal->m_caControlledBy) { result = CARESULT_DENIED_BUSY; goto RESPOND_PACKET; } // // Try to put up query dialog // if (!CAStartQuery(pasHost, CA_REQUEST_GIVECONTROL, (PCA30P)pPacketRecv)) { result = CARESULT_DENIED; } RESPOND_PACKET: if (result != CARESULT_CONFIRMED) { // Instant failure. CACompleteRequestGiveControl(pasHost, pPacketRecv, result); } else { // // We're in a waiting state. CACompleteRequestGiveControl() will // complete later or the request will just go away. // } DebugExitVOID(ASShare::CAHandleRequestGiveControl); } // // CACompleteRequestGiveControl() // WE are VIEWER, REMOTE is HOST // Completes the invite control request. // void ASShare::CACompleteRequestGiveControl ( ASPerson * pasFrom, PCA_RGC_PACKET pPacketRecv, UINT result ) { CA30P packetSend; DebugEntry(ASShare::CACompleteRequestGiveControl); ValidatePerson(pasFrom); ZeroMemory(&packetSend, sizeof(packetSend)); packetSend.rrgc.hostControlID = pPacketRecv->hostControlID; packetSend.rrgc.result = result; if (result == CARESULT_CONFIRMED) { packetSend.rrgc.viewerControlID = CANewRequestID(); } if (CAQueueSendPacket(pasFrom->mcsID, CA_REPLY_REQUEST_GIVECONTROL, &packetSend)) { // // If this is successful, change our state. We're now in control. // if (result == CARESULT_CONFIRMED) { // Clear current state, whatever that is. CA_ClearLocalState(CACLEAR_ALL, NULL, TRUE); CAStartInControl(pasFrom, pPacketRecv->hostControlID); } else { WARNING_OUT(("Denying GIVE CONTROL from [%d] with reason %d", pasFrom->mcsID, result)); } } else { WARNING_OUT(("Reply to GIVE CONTROL from [%d] failing, out of memory", pasFrom->mcsID)); } DebugExitVOID(ASShare::CACompleteRequestGiveControl); } // // CAHandleReplyRequestGiveControl() // WE are HOST, REMOTE is VIEWER // Handles reply to previous take control invite. // void ASShare::CAHandleReplyRequestGiveControl ( ASPerson * pasViewer, PCA_REPLY_RGC_PACKET pPacketRecv ) { DebugEntry(ASShare::CAHandleReplyRequestGiveControl); ValidatePerson(pasViewer); if (pPacketRecv->result == CARESULT_CONFIRMED) { // On success, should have valid op ID. ASSERT(pPacketRecv->viewerControlID); } else { // On failure, should have invalid op ID. ASSERT(!pPacketRecv->viewerControlID); } // // Is this response for the latest control op? // if ((m_caWaitingForReplyFrom != pasViewer) || (m_caWaitingForReplyMsg != CA_REPLY_REQUEST_GIVECONTROL)) { WARNING_OUT(("Ignoring GIVE CONTROL REPLY from [%d], not waiting for one", pasViewer->mcsID)); DC_QUIT; } if (pPacketRecv->hostControlID != m_pasLocal->m_caControlID) { WARNING_OUT(("Ignoring GIVE CONTROL REPLY from [%d], request %d is out of date", pasViewer->mcsID, pPacketRecv->hostControlID)); DC_QUIT; } ASSERT(!m_caQueryDlg); ASSERT(m_pHost); ASSERT(m_pasLocal->m_caAllowControl); // // Cleanup waiting state (for both failure & success) // CA_CancelGiveControl(pasViewer, FALSE); ASSERT(!m_caWaitingForReplyFrom); ASSERT(!m_caWaitingForReplyMsg); if (pPacketRecv->result == CARESULT_CONFIRMED) { // Success! We are now controlled by the viewer // Make sure our own state is OK ASSERT(!m_pasLocal->m_caControlledBy); ASSERT(!m_pasLocal->m_caInControlOf); CAStartControlled(pasViewer, pPacketRecv->viewerControlID); } else { WARNING_OUT(("GIVE CONTROL to viewer [%d] was denied", pasViewer->mcsID)); } DC_EXIT_POINT: DebugExitVOID(ASShare::CAHandleReplyRequestGiveControl); } // // CAHandlePreferPassControl() // WE are HOST, REMOTE is CONTROLLER // Handles incoming pass control request. If we are controlled by the // remote, and end user is cool with it, accept. // void ASShare::CAHandlePreferPassControl ( ASPerson * pasController, PCA_PPC_PACKET pPacketRecv ) { ASPerson * pasNewController; DebugEntry(ASShare::CAHandlePreferPassControl); ValidatePerson(pasController); // // If we're not controlled by the requester, ignore it. // if (m_pasLocal->m_caControlledBy != pasController) { WARNING_OUT(("Ignoring PASS CONTROL from [%d], not controlled by him", pasController->mcsID)); DC_QUIT; } if ((pPacketRecv->viewerControlID != pasController->m_caControlID) || (pPacketRecv->hostControlID != m_pasLocal->m_caControlID)) { WARNING_OUT(("Ignoring PASS CONTROL from [%d], request %d %d out of date", pasController->mcsID, pPacketRecv->viewerControlID, pPacketRecv->hostControlID)); DC_QUIT; } ASSERT(!m_caQueryDlg); ASSERT(!m_caWaitingForReplyFrom); ASSERT(!m_caWaitingForReplyMsg); // // OK, the sender is not in control of us anymore. // CA_RevokeControl(pasController, FALSE); // Is the pass to person specified valid? pasNewController = SC_PersonFromNetID(pPacketRecv->mcsPassTo); if (!pasNewController || (pasNewController == pasController) || (pasNewController == m_pasLocal)) { WARNING_OUT(("PASS CONTROL to [%d] failing, not valid person to pass to", pPacketRecv->mcsPassTo)); DC_QUIT; } // // Try to put up query dialog // if (!CAStartQuery(pasController, CA_PREFER_PASSCONTROL, (PCA30P)pPacketRecv)) { // Instant failure. In this case, no packet. WARNING_OUT(("Denying PREFER PASS CONTROL from [%d], out of memory", pasController->mcsID)); } else { // // We're in a waiting state. CACompletePreferPassControl() will // complete later or the request will just go away. // } DC_EXIT_POINT: DebugExitVOID(ASShare::CAHandlePreferPassControl); } // // CACompletePreferPassControl() // WE are HOST, REMOTE is new potential CONTROLLER // Completes the prefer pass control request. // void ASShare::CACompletePreferPassControl ( ASPerson * pasTo, UINT mcsOrg, PCA_PPC_PACKET pPacketRecv, UINT result ) { CA30P packetSend; DebugEntry(ASShare::CACompletePreferPassControl); ValidatePerson(pasTo); if (result == CARESULT_CONFIRMED) { ZeroMemory(&packetSend, sizeof(packetSend)); packetSend.rgc.hostControlID = CANewRequestID(); packetSend.rgc.mcsPassFrom = mcsOrg; if (CAQueueSendPacket(pasTo->mcsID, CA_REQUEST_GIVECONTROL, &packetSend)) { CA_ClearLocalState(CACLEAR_HOST, NULL, TRUE); CAStartWaiting(pasTo, CA_REPLY_REQUEST_GIVECONTROL); } else { WARNING_OUT(("Reply to PREFER PASS CONTROL from [%d] to [%d] failing, out of memory", mcsOrg, pasTo->mcsID)); } } else { WARNING_OUT(("Denying PREFER PASS CONTROL from [%d] to [%d] with reason %d", mcsOrg, pasTo->mcsID, result)); } DebugExitVOID(ASShare::CACompletePreferPassControl); } // // CAHandleInformReleasedControl() // WE are HOST, REMOTE is CONTROLLER // void ASShare::CAHandleInformReleasedControl ( ASPerson * pasController, PCA_INFORM_PACKET pPacketRecv ) { DebugEntry(ASShare::CAHandleInformReleasedControl); ValidatePerson(pasController); // // Do we currently have a TakeControl dialog up for this request? If so, // take it down but don't send a packet. // if (m_caQueryDlg && (m_caQuery.pasReplyTo == pasController) && (m_caQuery.msg == CA_REQUEST_TAKECONTROL) && (m_caQuery.request.rtc.viewerControlID == pPacketRecv->viewerControlID)) { ASSERT(!pPacketRecv->hostControlID); CACancelQuery(pasController, FALSE); DC_QUIT; } // // If this person isn't in control of us or the control op referred to // isn't the current one, ignore. NULL hostControlID means the person // cancelled a request before they heard back from us. // if (pasController->m_caInControlOf != m_pasLocal) { WARNING_OUT(("Ignoring RELEASE CONTROL from [%d], we're not controlled by them", pasController->mcsID)); DC_QUIT; } if (pPacketRecv->viewerControlID != pasController->m_caControlID) { WARNING_OUT(("Ignoring RELEASE CONTROL from [%d], viewer ID out of date", pasController->mcsID, pPacketRecv->viewerControlID)); DC_QUIT; } if (pPacketRecv->hostControlID && (pPacketRecv->hostControlID != m_pasLocal->m_caControlID)) { WARNING_OUT(("Ignoring RELEASE CONTROL from [%d], host ID out of date", pasController->mcsID, pPacketRecv->hostControlID)); DC_QUIT; } // Undo control, but no packet gets sent, we're just cleaning up. CA_RevokeControl(pasController, FALSE); DC_EXIT_POINT: DebugExitVOID(ASShare::CAHandleInformReleasedControl); } // // CAHandleInformRevokedControl() // WE are CONTROLLER, REMOTE is HOST // void ASShare::CAHandleInformRevokedControl ( ASPerson * pasHost, PCA_INFORM_PACKET pPacketRecv ) { DebugEntry(ASShare::CAHandleInformRevokedControl); ValidatePerson(pasHost); // // Do we currently have a GiveControl dialog up for this request? If so, // take it down but don't send a packet. // if (m_caQueryDlg && (m_caQuery.pasReplyTo == pasHost) && (m_caQuery.msg == CA_REQUEST_GIVECONTROL) && (m_caQuery.request.rgc.hostControlID == pPacketRecv->hostControlID)) { ASSERT(!pPacketRecv->viewerControlID); CACancelQuery(pasHost, FALSE); DC_QUIT; } // // If this person isn't controlled by us or the control op referred to // isn't the current one, ignore. // if (pasHost->m_caControlledBy != m_pasLocal) { WARNING_OUT(("Ignoring REVOKE CONTROL from [%d], not in control of them", pasHost->mcsID)); DC_QUIT; } if (pPacketRecv->hostControlID != pasHost->m_caControlID) { WARNING_OUT(("Ignoring REVOKE CONTROL from [%d], host ID out of date", pasHost->mcsID, pPacketRecv->hostControlID)); DC_QUIT; } if (pPacketRecv->viewerControlID && (pPacketRecv->viewerControlID != m_pasLocal->m_caControlID)) { WARNING_OUT(("Ignoring REVOKE CONTROL from [%d], viewer ID out of date", pasHost->mcsID, pPacketRecv->viewerControlID)); DC_QUIT; } // Undo control, but no packet gets sent, we're just cleaning up. CA_ReleaseControl(pasHost, FALSE); DC_EXIT_POINT: DebugExitVOID(ASShare::CAHandleInformRevokedControl); } void ASShare::CAHandleNewState ( ASPerson * pasHost, PCANOTPACKET pPacket ) { BOOL caOldAllowControl; BOOL caNewAllowControl; ASPerson * pasController; DebugEntry(ASShare::CAHandleNewState); // // If this node isn't hosting, ignore this. // ValidatePerson(pasHost); ASSERT(pasHost->hetCount); // // Update controllable state FIRST, so view window changes will // reflect it. // caOldAllowControl = pasHost->m_caAllowControl; caNewAllowControl = ((pPacket->state & CASTATE_ALLOWCONTROL) != 0); if (!caNewAllowControl && (pasHost->m_caControlledBy == m_pasLocal)) { // // Fix up bogus notification // ERROR_OUT(("CA_STATE notification error! We're in control of [%d] but he says he's not controllable.", pasHost->mcsID)); CA_ReleaseControl(pasHost, FALSE); } pasHost->m_caAllowControl = caNewAllowControl; // Update/clear controller if (!pPacket->controllerID) { pasController = NULL; } else { pasController = SC_PersonFromNetID(pPacket->controllerID); if (pasController == pasHost) { ERROR_OUT(("Bogus controller, same as host [%d]", pPacket->controllerID)); pasController = NULL; } } if (!CAClearHostState(pasHost, pasController)) { // This failed. Put back old controllable state. pasHost->m_caAllowControl = caOldAllowControl; } // Force a state change if the allow state has altered if (caOldAllowControl != pasHost->m_caAllowControl) { VIEW_HostStateChange(pasHost); } DebugExitVOID(ASShare::CAHandleNewState); } // // CAStartWaiting() // Sets up vars for waiting state. // void ASShare::CAStartWaiting ( ASPerson * pasWaitForReplyFrom, UINT msgWaitForReplyFrom ) { DebugEntry(ASShare::CAStartWaiting); ValidatePerson(pasWaitForReplyFrom); ASSERT(msgWaitForReplyFrom); ASSERT(!m_caWaitingForReplyFrom); ASSERT(!m_caWaitingForReplyMsg); m_caWaitingForReplyFrom = pasWaitForReplyFrom; m_caWaitingForReplyMsg = msgWaitForReplyFrom; DebugExitVOID(ASShare::CAStartWaiting); } // // CA_ClearLocalState() // // Called to reset control state for LOCAL dude. // void ASShare::CA_ClearLocalState ( UINT flags, ASPerson * pasRemote, BOOL fPacket ) { DebugEntry(ASShare::CA_ClearLocalState); // // Clear HOST stuff // if (flags & CACLEAR_HOST) { if (m_caWaitingForReplyMsg == CA_REPLY_REQUEST_GIVECONTROL) { if (!pasRemote || (pasRemote == m_caWaitingForReplyFrom)) { // Kill the outstanding invitation to the remote CA_CancelGiveControl(m_caWaitingForReplyFrom, fPacket); } } if (m_caQueryDlg && ((m_caQuery.msg == CA_REQUEST_TAKECONTROL) || (m_caQuery.msg == CA_PREFER_PASSCONTROL))) { if (!pasRemote || (pasRemote == m_caQuery.pasReplyTo)) { // Kill the user query dialog that's up CACancelQuery(m_caQuery.pasReplyTo, fPacket); } } if (m_pasLocal->m_caControlledBy) { if (!pasRemote || (pasRemote == m_pasLocal->m_caControlledBy)) { CA_RevokeControl(m_pasLocal->m_caControlledBy, fPacket); ASSERT(!m_pasLocal->m_caControlledBy); } } } // // Clear VIEW stuff // if (flags & CACLEAR_VIEW) { if (m_caWaitingForReplyMsg == CA_REPLY_REQUEST_TAKECONTROL) { if (!pasRemote || (pasRemote == m_caWaitingForReplyFrom)) { CA_CancelTakeControl(m_caWaitingForReplyFrom, fPacket); } } if (m_caQueryDlg && (m_caQuery.msg == CA_REQUEST_GIVECONTROL)) { if (!pasRemote || (pasRemote == m_caQuery.pasReplyTo)) { // Kill the user query dialog that's up CACancelQuery(m_caQuery.pasReplyTo, fPacket); } } if (m_pasLocal->m_caInControlOf) { if (!pasRemote || (pasRemote == m_pasLocal->m_caInControlOf)) { CA_ReleaseControl(m_pasLocal->m_caInControlOf, fPacket); ASSERT(!m_pasLocal->m_caInControlOf); } } } DebugExitVOID(ASShare::CA_ClearLocalState); } // // CAClearRemoteState() // // Called to reset all control state for a REMOTE node // void ASShare::CAClearRemoteState(ASPerson * pasClear) { DebugEntry(ASShare::CAClearRemoteState); if (pasClear->m_caInControlOf) { CAClearHostState(pasClear->m_caInControlOf, NULL); ASSERT(!pasClear->m_caInControlOf); ASSERT(!pasClear->m_caControlledBy); } else if (pasClear->m_caControlledBy) { CAClearHostState(pasClear, NULL); ASSERT(!pasClear->m_caControlledBy); ASSERT(!pasClear->m_caInControlOf); } DebugExitVOID(ASShare:CAClearRemoteState); } // // CAClearHostState() // // Called to clean up the mutual pointers when undoing a node's host state. // We need to undo the previous states: // * Clear the previous controller of the host // * Clear the previous controller of the controller // * Clear the previous controllee of the controller // // This may be recursive. // // It returns TRUE if the change takes effect, FALSE if it's ignored because // it involves us and we have more recent information. // BOOL ASShare::CAClearHostState ( ASPerson * pasHost, ASPerson * pasController ) { BOOL rc = FALSE; UINT gccID; DebugEntry(ASShare::CAClearHostState); ValidatePerson(pasHost); // // If nothing is changing, do nothing // if (pasHost->m_caControlledBy == pasController) { TRACE_OUT(("Ignoring control change; nothing's changing")); rc = TRUE; DC_QUIT; } // // If the host is us, ignore. // Also, if the host isn't hosting yet we got an in control change, // ignore it too. // if ((pasHost == m_pasLocal) || (pasController && !pasHost->hetCount)) { WARNING_OUT(("Ignoring control change; host is us or not sharing")); DC_QUIT; } // // UNDO any old state of the controller // if (pasController) { if (pasController == m_pasLocal) { TRACE_OUT(("Ignoring control with us as controller")); DC_QUIT; } else if (pasController->m_caInControlOf) { ASSERT(!pasController->m_caControlledBy); ASSERT(pasController->m_caInControlOf->m_caControlledBy == pasController); rc = CAClearHostState(pasController->m_caInControlOf, NULL); if (!rc) { DC_QUIT; } ASSERT(!pasController->m_caInControlOf); } else if (pasController->m_caControlledBy) { ASSERT(!pasController->m_caInControlOf); ASSERT(pasController->m_caControlledBy->m_caInControlOf == pasController); rc = CAClearHostState(pasController, NULL); if (!rc) { DC_QUIT; } ASSERT(!pasController->m_caControlledBy); } } // // UNDO any old IN CONTROL state of the host // if (pasHost->m_caInControlOf) { ASSERT(!pasHost->m_caControlledBy); ASSERT(pasHost->m_caInControlOf->m_caControlledBy == pasHost); rc = CAClearHostState(pasHost->m_caInControlOf, NULL); if (!rc) { DC_QUIT; } ASSERT(!pasHost->m_caInControlOf); } // // FINALLY! Update CONTROLLED BY state of the host // // Clear OLD ControlledBy if (pasHost->m_caControlledBy) { ASSERT(pasHost->m_caControlledBy->m_caInControlOf == pasHost); pasHost->m_caControlledBy->m_caInControlOf = NULL; } // Set NEW ControlledBy pasHost->m_caControlledBy = pasController; if (pasController) { pasController->m_caInControlOf = pasHost; gccID = pasController->cpcCaps.share.gccID; } else { gccID = 0; } VIEW_HostStateChange(pasHost); // // The hosts' controller has changed. Repaint the shadow cursor with/wo // the new initials. // CM_UpdateShadowCursor(pasHost, pasHost->cmShadowOff, pasHost->cmPos.x, pasHost->cmPos.y, pasHost->cmHotSpot.x, pasHost->cmHotSpot.y); rc = TRUE; DC_EXIT_POINT: DebugExitBOOL(ASShare::CAClearHostState, rc); return(rc); } // // CAStartQuery() // // This puts up the modeless dialog to query the user about a control // request. It will timeout if not handled. // BOOL ASShare::CAStartQuery ( ASPerson * pasFrom, UINT msg, PCA30P pReq ) { BOOL rc = FALSE; DebugEntry(ASShare::CAStartQuery); ValidatePerson(pasFrom); // // We have no stacked queries. If another comes in while the current // one is up, it gets an immediate failure busy. // ASSERT(!m_caQueryDlg); ASSERT(!m_caQuery.pasReplyTo); ASSERT(!m_caQuery.msg); // // Setup for new query // if (msg == CA_PREFER_PASSCONTROL) { // // With forwarding, the person we're going to send a packet to // if accepted is not the person who sent us the request. It's the // person we're forwarding to. // m_caQuery.pasReplyTo = SC_PersonFromNetID(pReq->ppc.mcsPassTo); ValidatePerson(m_caQuery.pasReplyTo); } else { m_caQuery.pasReplyTo = pasFrom; } m_caQuery.mcsOrg = pasFrom->mcsID; m_caQuery.msg = msg; m_caQuery.request = *pReq; // // If we are unattended, or the requester is unattended, instantly // confirm. That's why we show the window after creating the dialog. // if ((m_pasLocal->cpcCaps.general.typeFlags & AS_UNATTENDED) || (pasFrom->cpcCaps.general.typeFlags & AS_UNATTENDED)) { CAFinishQuery(CARESULT_CONFIRMED); rc = TRUE; } else { // // If this is a request to us && we're hosting, check auto-accept/ // auto-reject settings. // if (m_pHost && ((msg == CA_REQUEST_TAKECONTROL) || (msg == CA_PREFER_PASSCONTROL))) { if (m_pHost->m_caTempRejectRequests) { CAFinishQuery(CARESULT_DENIED_BUSY); rc = TRUE; DC_QUIT; } else if (m_pHost->m_caAutoAcceptRequests) { CAFinishQuery(CARESULT_CONFIRMED); rc = TRUE; DC_QUIT; } } m_caQueryDlg = CreateDialogParam(g_asInstance, MAKEINTRESOURCE(IDD_QUERY), NULL, CAQueryDlgProc, 0); if (!m_caQueryDlg) { ERROR_OUT(("Failed to create query message box from [%d]", pasFrom->mcsID)); m_caQuery.pasReplyTo = NULL; m_caQuery.mcsOrg = 0; m_caQuery.msg = 0; } else { // Success rc = TRUE; } } DC_EXIT_POINT: DebugExitBOOL(ASShare::CAStartQuery, rc); return(rc); } // // CAFinishQuery() // // Called to finish the query we started, either because of UI or because // we or the remote are unattended. // void ASShare::CAFinishQuery(UINT result) { CA30PENDING request; DebugEntry(ASShare::CAFinishQuery); ValidatePerson(m_caQuery.pasReplyTo); // Make a copy of our request request = m_caQuery; // // If we have a dialog up, destroy it NOW. Completing the request // may cause us to be controlled or whatever. So get the dialog // out of the way immediately. // // Note that destroying ourself will clear the request vars, hence the // copy above. // if (m_caQueryDlg) { DestroyWindow(m_caQueryDlg); } else { m_caQuery.pasReplyTo = NULL; m_caQuery.mcsOrg = 0; m_caQuery.msg = 0; } switch (request.msg) { case CA_REQUEST_TAKECONTROL: { CACompleteRequestTakeControl(request.pasReplyTo, &request.request.rtc, result); break; } case CA_REQUEST_GIVECONTROL: { CACompleteRequestGiveControl(request.pasReplyTo, &request.request.rgc, result); break; } case CA_PREFER_PASSCONTROL: { CACompletePreferPassControl(request.pasReplyTo, request.mcsOrg, &request.request.ppc, result); break; } default: { ERROR_OUT(("Unrecognized query msg %d", request.msg)); break; } } DebugExitVOID(ASShare::CAFinishQuery); } // // CA_QueryDlgProc() // // Handles querying user dialog // INT_PTR CALLBACK CAQueryDlgProc ( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam ) { return(g_asSession.pShare->CA_QueryDlgProc(hwnd, message, wParam, lParam)); } BOOL ASShare::CA_QueryDlgProc ( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam ) { BOOL rc = TRUE; DebugEntry(CA_QueryDlgProc); switch (message) { case WM_INITDIALOG: { char szT[256]; char szRes[512]; char szShared[64]; UINT idsTitle; ASPerson * pasT; HDC hdc; HFONT hfn; RECT rc; RECT rcOwner; ValidatePerson(m_caQuery.pasReplyTo); pasT = NULL; // Set title. ASSERT(m_caQuery.msg); switch (m_caQuery.msg) { case CA_REQUEST_TAKECONTROL: { idsTitle = IDS_TITLE_QUERY_TAKECONTROL; if (m_pasLocal->hetCount == HET_DESKTOPSHARED) LoadString(g_asInstance, IDS_DESKTOP_LOWER, szShared, sizeof(szShared)); else LoadString(g_asInstance, IDS_PROGRAMS_LOWER, szShared, sizeof(szShared)); LoadString(g_asInstance, IDS_MSG_QUERY_TAKECONTROL, szT, sizeof(szT)); wsprintf(szRes, szT, m_caQuery.pasReplyTo->scName, szShared); break; } case CA_REQUEST_GIVECONTROL: { if (m_caQuery.pasReplyTo->hetCount == HET_DESKTOPSHARED) LoadString(g_asInstance, IDS_DESKTOP_LOWER, szShared, sizeof(szShared)); else LoadString(g_asInstance, IDS_PROGRAMS_LOWER, szShared, sizeof(szShared)); if (m_caQuery.request.rgc.mcsPassFrom) { pasT = SC_PersonFromNetID(m_caQuery.request.rgc.mcsPassFrom); } if (pasT) { idsTitle = IDS_TITLE_QUERY_YIELDCONTROL; LoadString(g_asInstance, IDS_MSG_QUERY_YIELDCONTROL, szT, sizeof(szT)); wsprintf(szRes, szT, pasT->scName, m_caQuery.pasReplyTo->scName, szShared); } else { idsTitle = IDS_TITLE_QUERY_GIVECONTROL; LoadString(g_asInstance, IDS_MSG_QUERY_GIVECONTROL, szT, sizeof(szT)); wsprintf(szRes, szT, m_caQuery.pasReplyTo->scName, szShared); } break; } case CA_PREFER_PASSCONTROL: { pasT = SC_PersonFromNetID(m_caQuery.mcsOrg); ValidatePerson(pasT); idsTitle = IDS_TITLE_QUERY_FORWARDCONTROL; if (m_pasLocal->hetCount == HET_DESKTOPSHARED) LoadString(g_asInstance, IDS_DESKTOP_LOWER, szShared, sizeof(szShared)); else LoadString(g_asInstance, IDS_PROGRAMS_LOWER, szShared, sizeof(szShared)); LoadString(g_asInstance, IDS_MSG_QUERY_FORWARDCONTROL, szT, sizeof(szT)); wsprintf(szRes, szT, pasT->scName, szShared, m_caQuery.pasReplyTo->scName); break; } default: { ERROR_OUT(("Bogus m_caQuery.msg %d", m_caQuery.msg)); break; } } LoadString(g_asInstance, idsTitle, szT, sizeof(szT)); SetWindowText(hwnd, szT); // Set message. SetDlgItemText(hwnd, CTRL_QUERY, szRes); // Center the message vertically GetWindowRect(GetDlgItem(hwnd, CTRL_QUERY), &rcOwner); MapWindowPoints(NULL, hwnd, (LPPOINT)&rcOwner, 2); rc = rcOwner; hdc = GetDC(hwnd); hfn = (HFONT)SendDlgItemMessage(hwnd, CTRL_QUERY, WM_GETFONT, 0, 0); hfn = SelectFont(hdc, hfn); DrawText(hdc, szRes, -1, &rc, DT_NOCLIP | DT_EXPANDTABS | DT_NOPREFIX | DT_WORDBREAK | DT_CALCRECT); SelectFont(hdc, hfn); ReleaseDC(hwnd, hdc); ASSERT((rc.bottom - rc.top) <= (rcOwner.bottom - rcOwner.top)); SetWindowPos(GetDlgItem(hwnd, CTRL_QUERY), NULL, rcOwner.left, ((rcOwner.top + rcOwner.bottom) - (rc.bottom - rc.top)) / 2, (rcOwner.right - rcOwner.left), rc.bottom - rc.top, SWP_NOACTIVATE | SWP_NOZORDER); SetTimer(hwnd, IDT_CAQUERY, PERIOD_CAQUERY, 0); // // Show window, the user will handle // ShowWindow(hwnd, SW_SHOWNORMAL); SetForegroundWindow(hwnd); UpdateWindow(hwnd); break; } case WM_COMMAND: { switch (GET_WM_COMMAND_ID(wParam, lParam)) { case IDOK: { CAFinishQuery(CARESULT_CONFIRMED); break; } case IDCANCEL: { CAFinishQuery(CARESULT_DENIED_USER); break; } } break; } case WM_TIMER: { if (wParam != IDT_CAQUERY) { rc = FALSE; } else { KillTimer(hwnd, IDT_CAQUERY); // Timed out failure. CAFinishQuery(CARESULT_DENIED_TIMEDOUT); } break; } case WM_DESTROY: { // // Clear pending info // m_caQueryDlg = NULL; m_caQuery.pasReplyTo = NULL; m_caQuery.mcsOrg = 0; m_caQuery.msg = 0; break; } default: { rc = FALSE; break; } } DebugExitBOOL(CA_QueryDlgProc, rc); return(rc); } // // CACancelQuery() // // If a dialog is up for a take control request, it hasn't been handled yet, // and we get a cancel notification from the viewer, we need to take the // dialog down WITHOUT generating a response packet. // void ASShare::CACancelQuery ( ASPerson * pasFrom, BOOL fPacket ) { DebugEntry(ASShare::CACancelQuery); ASSERT(m_caQueryDlg); ASSERT(m_caQuery.pasReplyTo == pasFrom); if (fPacket) { // This will send a packet then destroy the dialog CAFinishQuery(CARESULT_DENIED); } else { // Destroy the dialog DestroyWindow(m_caQueryDlg); } ASSERT(!m_caQueryDlg); ASSERT(!m_caQuery.pasReplyTo); ASSERT(!m_caQuery.msg); DebugExitVOID(ASShare::CACancelQuery); }