/** * Function description * * @return 0 on success, otherwise a Win32 error code */ static UINT drdynvc_process_capability_request(drdynvcPlugin* drdynvc, int Sp, int cbChId, wStream* s) { UINT status; if (!drdynvc) return CHANNEL_RC_BAD_INIT_HANDLE; if (Stream_GetRemainingLength(s) < 3) return ERROR_INVALID_DATA; WLog_Print(drdynvc->log, WLOG_TRACE, "capability_request Sp=%d cbChId=%d", Sp, cbChId); Stream_Seek(s, 1); /* pad */ Stream_Read_UINT16(s, drdynvc->version); /* RDP8 servers offer version 3, though Microsoft forgot to document it * in their early documents. It behaves the same as version 2. */ if ((drdynvc->version == 2) || (drdynvc->version == 3)) { if (Stream_GetRemainingLength(s) < 8) return ERROR_INVALID_DATA; Stream_Read_UINT16(s, drdynvc->PriorityCharge0); Stream_Read_UINT16(s, drdynvc->PriorityCharge1); Stream_Read_UINT16(s, drdynvc->PriorityCharge2); Stream_Read_UINT16(s, drdynvc->PriorityCharge3); } status = drdynvc_send_capability_response(drdynvc); drdynvc->state = DRDYNVC_STATE_READY; return status; }
static int drdynvc_process_capability_request(drdynvcPlugin* drdynvc, int Sp, int cbChId, wStream* s) { int status; DEBUG_DVC("Sp=%d cbChId=%d", Sp, cbChId); Stream_Seek(s, 1); /* pad */ Stream_Read_UINT16(s, drdynvc->version); /* RDP8 servers offer version 3, though Microsoft forgot to document it * in their early documents. It behaves the same as version 2. */ if ((drdynvc->version == 2) || (drdynvc->version == 3)) { Stream_Read_UINT16(s, drdynvc->PriorityCharge0); Stream_Read_UINT16(s, drdynvc->PriorityCharge1); Stream_Read_UINT16(s, drdynvc->PriorityCharge2); Stream_Read_UINT16(s, drdynvc->PriorityCharge3); } status = drdynvc_send_capability_response(drdynvc); drdynvc->channel_error = status; drdynvc->state = DRDYNVC_STATE_READY; return 0; }
static int drdynvc_process_create_request(drdynvcPlugin* drdynvc, int Sp, int cbChId, wStream* s) { int pos; int status; UINT32 ChannelId; wStream* data_out; int channel_status; if (drdynvc->state == DRDYNVC_STATE_CAPABILITIES) { /** * For some reason the server does not always send the * capabilities pdu as it should. When this happens, * send a capabilities response. */ drdynvc->version = 3; drdynvc_send_capability_response(drdynvc); drdynvc->state = DRDYNVC_STATE_READY; } ChannelId = drdynvc_read_variable_uint(s, cbChId); pos = Stream_GetPosition(s); DEBUG_DVC("ChannelId=%d ChannelName=%s", ChannelId, Stream_Pointer(s)); channel_status = dvcman_create_channel(drdynvc->channel_mgr, ChannelId, (char*) Stream_Pointer(s)); data_out = Stream_New(NULL, pos + 4); Stream_Write_UINT8(data_out, 0x10 | cbChId); Stream_SetPosition(s, 1); Stream_Copy(data_out, s, pos - 1); if (channel_status == 0) { DEBUG_DVC("channel created"); Stream_Write_UINT32(data_out, 0); } else { DEBUG_DVC("no listener"); Stream_Write_UINT32(data_out, (UINT32)(-1)); } status = svc_plugin_send((rdpSvcPlugin*) drdynvc, data_out); if (status != CHANNEL_RC_OK) { DEBUG_WARN("VirtualChannelWrite failed %d", status); return 1; } if (channel_status == 0) { dvcman_open_channel(drdynvc->channel_mgr, ChannelId); } return 0; }
/** * Function description * * @return 0 on success, otherwise a Win32 error code */ static UINT drdynvc_process_create_request(drdynvcPlugin* drdynvc, int Sp, int cbChId, wStream* s) { size_t pos; UINT status; UINT32 ChannelId; wStream* data_out; UINT channel_status; char* name; size_t length; if (!drdynvc) return CHANNEL_RC_BAD_CHANNEL_HANDLE; if (drdynvc->state == DRDYNVC_STATE_CAPABILITIES) { /** * For some reason the server does not always send the * capabilities pdu as it should. When this happens, * send a capabilities response. */ drdynvc->version = 3; if ((status = drdynvc_send_capability_response(drdynvc))) { WLog_Print(drdynvc->log, WLOG_ERROR, "drdynvc_send_capability_response failed!"); return status; } drdynvc->state = DRDYNVC_STATE_READY; } if (Stream_GetRemainingLength(s) < drdynvc_cblen_to_bytes(cbChId)) return ERROR_INVALID_DATA; ChannelId = drdynvc_read_variable_uint(s, cbChId); pos = Stream_GetPosition(s); name = (char*)Stream_Pointer(s); length = Stream_GetRemainingLength(s); if (strnlen(name, length) >= length) return ERROR_INVALID_DATA; WLog_Print(drdynvc->log, WLOG_DEBUG, "process_create_request: ChannelId=%"PRIu32" ChannelName=%s", ChannelId, name); channel_status = dvcman_create_channel(drdynvc, drdynvc->channel_mgr, ChannelId, name); data_out = Stream_New(NULL, pos + 4); if (!data_out) { WLog_Print(drdynvc->log, WLOG_ERROR, "Stream_New failed!"); return CHANNEL_RC_NO_MEMORY; } Stream_Write_UINT8(data_out, 0x10 | cbChId); Stream_SetPosition(s, 1); Stream_Copy(s, data_out, pos - 1); if (channel_status == CHANNEL_RC_OK) { WLog_Print(drdynvc->log, WLOG_DEBUG, "channel created"); Stream_Write_UINT32(data_out, 0); } else { WLog_Print(drdynvc->log, WLOG_DEBUG, "no listener"); Stream_Write_UINT32(data_out, (UINT32)0xC0000001); /* same code used by mstsc */ } status = drdynvc_send(drdynvc, data_out); if (status != CHANNEL_RC_OK) { WLog_Print(drdynvc->log, WLOG_ERROR, "VirtualChannelWriteEx failed with %s [%08"PRIX32"]", WTSErrorToString(status), status); return status; } if (channel_status == CHANNEL_RC_OK) { if ((status = dvcman_open_channel(drdynvc, drdynvc->channel_mgr, ChannelId))) { WLog_Print(drdynvc->log, WLOG_ERROR, "dvcman_open_channel failed with error %"PRIu32"!", status); return status; } } else { if ((status = dvcman_close_channel(drdynvc->channel_mgr, ChannelId))) WLog_Print(drdynvc->log, WLOG_ERROR, "dvcman_close_channel failed with error %"PRIu32"!", status); } return status; }
/** * Function description * * @return 0 on success, otherwise a Win32 error code */ static UINT drdynvc_process_create_request(drdynvcPlugin* drdynvc, int Sp, int cbChId, wStream* s) { unsigned long pos; UINT status; UINT32 ChannelId; wStream* data_out; UINT channel_status; if (drdynvc->state == DRDYNVC_STATE_CAPABILITIES) { /** * For some reason the server does not always send the * capabilities pdu as it should. When this happens, * send a capabilities response. */ drdynvc->version = 3; if ((status = drdynvc_send_capability_response(drdynvc))) { WLog_ERR(TAG, "drdynvc_send_capability_response failed!"); return status; } drdynvc->state = DRDYNVC_STATE_READY; } ChannelId = drdynvc_read_variable_uint(s, cbChId); pos = Stream_GetPosition(s); WLog_DBG(TAG, "process_create_request: ChannelId=%d ChannelName=%s", ChannelId, Stream_Pointer(s)); channel_status = dvcman_create_channel(drdynvc->channel_mgr, ChannelId, (char*) Stream_Pointer(s)); data_out = Stream_New(NULL, pos + 4); if (!s) { WLog_ERR(TAG, "Stream_New failed!"); return CHANNEL_RC_NO_MEMORY; } Stream_Write_UINT8(data_out, 0x10 | cbChId); Stream_SetPosition(s, 1); Stream_Copy(s, data_out, pos - 1); if (channel_status == CHANNEL_RC_OK) { WLog_DBG(TAG, "channel created"); Stream_Write_UINT32(data_out, 0); } else { WLog_DBG(TAG, "no listener"); Stream_Write_UINT32(data_out, (UINT32) 0xC0000001); /* same code used by mstsc */ } status = drdynvc_send(drdynvc, data_out); if (status != CHANNEL_RC_OK) { WLog_ERR(TAG, "VirtualChannelWrite failed with %s [%08X]", WTSErrorToString(status), status); return status; } if (channel_status == CHANNEL_RC_OK) { if ((status = dvcman_open_channel(drdynvc->channel_mgr, ChannelId))) { WLog_ERR(TAG, "dvcman_open_channel failed with error %lu!", status); return status; } } else { if ((status = dvcman_close_channel(drdynvc->channel_mgr, ChannelId))) WLog_ERR(TAG, "dvcman_close_channel failed with error %lu!", status); } return status; }