| 1 | /* $Id: */
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| 2 | /** @file
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| 3 | * VBoxWatchdogUtils - Misc. utility functions for modules.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2011-2022 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 |
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| 19 | /*********************************************************************************************************************************
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| 20 | * Header Files *
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| 21 | *********************************************************************************************************************************/
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| 22 | #include <VBox/com/array.h>
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| 23 | #include "VBoxWatchdogInternal.h"
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| 24 |
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| 25 | #include <iprt/sanitized/sstream>
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| 26 | #include <algorithm>
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| 27 |
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| 28 |
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| 29 | /**
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| 30 | * Adds a group / a set of groups to the specified map.
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| 31 | * If a group in the group map exists there will be no action.
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| 32 | *
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| 33 | * @return IPRT status code.
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| 34 | * @param groups Map to add group(s) to.
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| 35 | * @param pszGroupsToAdd Comma-separated string of one or more groups to add.
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| 36 | * @param fFlags Flags to set to the groups added.
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| 37 | */
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| 38 | int groupAdd(mapGroups &groups, const char *pszGroupsToAdd, uint32_t fFlags)
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| 39 | {
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| 40 | AssertPtrReturn(pszGroupsToAdd, VERR_INVALID_POINTER);
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| 41 |
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| 42 | try
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| 43 | {
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| 44 | std::istringstream strGroups(pszGroupsToAdd);
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| 45 | for(std::string strToken; getline(strGroups, strToken, ','); )
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| 46 | {
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| 47 | strToken.erase(remove_if(strToken.begin(), strToken.end(), isspace), strToken.end());
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| 48 |
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| 49 | Utf8Str strTokenUtf8(strToken.c_str());
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| 50 | mapGroupsIterConst it = groups.find(strTokenUtf8);
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| 51 |
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| 52 | if (it == groups.end())
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| 53 | groups.insert(std::make_pair(strTokenUtf8, fFlags));
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| 54 | }
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| 55 | }
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| 56 | catch (...)
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| 57 | {
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| 58 | AssertFailed();
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| 59 | }
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| 60 |
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| 61 | return VINF_SUCCESS;
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| 62 | }
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| 63 |
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| 64 | /**
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| 65 | * Retrieves a metric from a specified machine.
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| 66 | *
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| 67 | * @return IPRT status code.
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| 68 | * @param pMachine Pointer to the machine's internal structure.
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| 69 | * @param strName Name of metric to retrieve.
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| 70 | * @param pulData Pointer to value to retrieve the actual metric value.
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| 71 | */
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| 72 | int getMetric(PVBOXWATCHDOG_MACHINE pMachine, const Bstr& strName, LONG *pulData)
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| 73 | {
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| 74 | AssertPtrReturn(pMachine, VERR_INVALID_POINTER);
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| 75 | AssertPtrReturn(pulData, VERR_INVALID_POINTER);
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| 76 |
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| 77 | /* Input. */
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| 78 | com::SafeArray<BSTR> metricNames(1);
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| 79 | com::SafeIfaceArray<IUnknown> metricObjects(1);
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| 80 | pMachine->machine.queryInterfaceTo(&metricObjects[0]);
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| 81 |
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| 82 | /* Output. */
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| 83 | com::SafeArray<BSTR> retNames;
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| 84 | com::SafeIfaceArray<IUnknown> retObjects;
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| 85 | com::SafeArray<BSTR> retUnits;
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| 86 | com::SafeArray<ULONG> retScales;
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| 87 | com::SafeArray<ULONG> retSequenceNumbers;
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| 88 | com::SafeArray<ULONG> retIndices;
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| 89 | com::SafeArray<ULONG> retLengths;
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| 90 | com::SafeArray<LONG> retData;
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| 91 |
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| 92 | /* Query current memory free. */
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| 93 | strName.cloneTo(&metricNames[0]);
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| 94 | #ifdef VBOX_WATCHDOG_GLOBAL_PERFCOL
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| 95 | Assert(!g_pPerfCollector.isNull());
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| 96 | HRESULT hrc = g_pPerfCollector->QueryMetricsData(
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| 97 | #else
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| 98 | Assert(!pMachine->collector.isNull());
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| 99 | HRESULT hrc = pMachine->collector->QueryMetricsData(
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| 100 | #endif
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| 101 | ComSafeArrayAsInParam(metricNames),
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| 102 | ComSafeArrayAsInParam(metricObjects),
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| 103 | ComSafeArrayAsOutParam(retNames),
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| 104 | ComSafeArrayAsOutParam(retObjects),
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| 105 | ComSafeArrayAsOutParam(retUnits),
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| 106 | ComSafeArrayAsOutParam(retScales),
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| 107 | ComSafeArrayAsOutParam(retSequenceNumbers),
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| 108 | ComSafeArrayAsOutParam(retIndices),
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| 109 | ComSafeArrayAsOutParam(retLengths),
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| 110 | ComSafeArrayAsOutParam(retData));
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| 111 | #if 0
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| 112 | /* Useful for metrics debugging. */
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| 113 | for (unsigned j = 0; j < retNames.size(); j++)
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| 114 | {
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| 115 | Bstr metricUnit(retUnits[j]);
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| 116 | Bstr metricName(retNames[j]);
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| 117 | RTPrintf("%-20ls ", metricName.raw());
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| 118 | const char *separator = "";
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| 119 | for (unsigned k = 0; k < retLengths[j]; k++)
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| 120 | {
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| 121 | if (retScales[j] == 1)
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| 122 | RTPrintf("%s%d %ls", separator, retData[retIndices[j] + k], metricUnit.raw());
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| 123 | else
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| 124 | RTPrintf("%s%d.%02d%ls", separator, retData[retIndices[j] + k] / retScales[j],
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| 125 | (retData[retIndices[j] + k] * 100 / retScales[j]) % 100, metricUnit.raw());
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| 126 | separator = ", ";
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| 127 | }
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| 128 | RTPrintf("\n");
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| 129 | }
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| 130 | #endif
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| 131 |
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| 132 | if (SUCCEEDED(hrc))
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| 133 | *pulData = retData.size() ? retData[retIndices[0]] : 0;
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| 134 |
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| 135 | return SUCCEEDED(hrc) ? VINF_SUCCESS : VINF_NOT_SUPPORTED;
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| 136 | }
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| 137 |
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| 138 | /**
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| 139 | * Returns the payload of a machine.
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| 140 | *
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| 141 | * @return void* Pointer to payload data. Mutable!
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| 142 | * @param pMachine Machine to get payload for.
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| 143 | * @param pszModule Module name to get payload from.
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| 144 | */
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| 145 | void* payloadFrom(PVBOXWATCHDOG_MACHINE pMachine, const char *pszModule)
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| 146 | {
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| 147 | AssertPtrReturn(pMachine, NULL);
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| 148 | AssertPtrReturn(pszModule, NULL);
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| 149 | mapPayloadIter it = pMachine->payload.find(pszModule);
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| 150 | if (it == pMachine->payload.end())
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| 151 | return NULL;
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| 152 | Assert(it->second.cbData);
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| 153 | return it->second.pvData;
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| 154 | }
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| 155 |
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| 156 | int payloadAlloc(PVBOXWATCHDOG_MACHINE pMachine, const char *pszModule,
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| 157 | size_t cbSize, void **ppszPayload)
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| 158 | {
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| 159 | AssertPtrReturn(pMachine, VERR_INVALID_POINTER);
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| 160 | AssertPtrReturn(pszModule, VERR_INVALID_POINTER);
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| 161 | AssertReturn(cbSize, VERR_INVALID_PARAMETER);
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| 162 |
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| 163 | void *pvData = RTMemAllocZ(cbSize);
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| 164 | AssertPtrReturn(pvData, VERR_NO_MEMORY);
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| 165 |
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| 166 | mapPayloadIter it = pMachine->payload.find(pszModule);
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| 167 | AssertReturn(it == pMachine->payload.end(), VERR_INVALID_PARAMETER);
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| 168 |
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| 169 | VBOXWATCHDOG_MODULE_PAYLOAD p;
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| 170 | p.pvData = pvData;
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| 171 | p.cbData = cbSize;
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| 172 |
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| 173 | if (ppszPayload)
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| 174 | *ppszPayload = p.pvData;
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| 175 |
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| 176 | pMachine->payload.insert(std::make_pair(pszModule, p));
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| 177 |
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| 178 | return VINF_SUCCESS;
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| 179 | }
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| 180 |
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| 181 | void payloadFree(PVBOXWATCHDOG_MACHINE pMachine, const char *pszModule)
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| 182 | {
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| 183 | AssertPtrReturnVoid(pMachine);
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| 184 | AssertPtrReturnVoid(pszModule);
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| 185 |
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| 186 | mapPayloadIter it = pMachine->payload.find(pszModule);
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| 187 | if (it != pMachine->payload.end())
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| 188 | {
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| 189 | RTMemFree(it->second.pvData);
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| 190 | pMachine->payload.erase(it);
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| 191 | }
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| 192 | }
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| 193 |
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| 194 | PVBOXWATCHDOG_MACHINE getMachine(const Bstr& strUuid)
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| 195 | {
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| 196 | mapVMIter it = g_mapVM.find(strUuid);
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| 197 | if (it != g_mapVM.end())
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| 198 | return &it->second;
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| 199 | return NULL;
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| 200 | }
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| 201 |
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| 202 | MachineState_T getMachineState(const PVBOXWATCHDOG_MACHINE pMachine)
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| 203 | {
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| 204 | AssertPtrReturn(pMachine, MachineState_Null);
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| 205 | MachineState_T machineState;
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| 206 | Assert(!pMachine->machine.isNull());
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| 207 | HRESULT rc = pMachine->machine->COMGETTER(State)(&machineState);
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| 208 | if (SUCCEEDED(rc))
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| 209 | return machineState;
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| 210 | return MachineState_Null;
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| 211 | }
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| 212 |
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| 213 | int cfgGetValueStr(const ComPtr<IVirtualBox> &rptrVBox, const ComPtr<IMachine> &rptrMachine,
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| 214 | const char *pszGlobal, const char *pszVM, Utf8Str &strValue, Utf8Str strDefault)
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| 215 | {
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| 216 | AssertReturn(!rptrVBox.isNull(), VERR_INVALID_POINTER);
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| 217 |
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| 218 |
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| 219 | /* Try per-VM approach. */
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| 220 | Bstr strTemp;
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| 221 | HRESULT hr;
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| 222 | if (!rptrMachine.isNull())
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| 223 | {
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| 224 | AssertPtr(pszVM);
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| 225 | hr = rptrMachine->GetExtraData(Bstr(pszVM).raw(),
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| 226 | strTemp.asOutParam());
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| 227 | if ( SUCCEEDED(hr)
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| 228 | && !strTemp.isEmpty())
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| 229 | {
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| 230 | strValue = Utf8Str(strTemp);
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| 231 | }
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| 232 | }
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| 233 |
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| 234 | if (strValue.isEmpty()) /* Not set by per-VM value? */
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| 235 | {
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| 236 | AssertPtr(pszGlobal);
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| 237 |
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| 238 | /* Try global approach. */
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| 239 | hr = rptrVBox->GetExtraData(Bstr(pszGlobal).raw(),
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| 240 | strTemp.asOutParam());
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| 241 | if ( SUCCEEDED(hr)
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| 242 | && !strTemp.isEmpty())
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| 243 | {
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| 244 | strValue = Utf8Str(strTemp);
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| 245 | }
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| 246 | }
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| 247 |
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| 248 | if (strValue.isEmpty())
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| 249 | {
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| 250 | strValue = strDefault;
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| 251 | return VERR_NOT_FOUND;
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| 252 | }
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| 253 |
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| 254 | return VINF_SUCCESS;
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| 255 | }
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| 256 |
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| 257 | int cfgGetValueU32(const ComPtr<IVirtualBox> &rptrVBox, const ComPtr<IMachine> &rptrMachine,
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| 258 | const char *pszGlobal, const char *pszVM, uint32_t *puValue, uint32_t uDefault)
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| 259 | {
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| 260 | Utf8Str strValue;
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| 261 | int rc = cfgGetValueStr(rptrVBox, rptrMachine, pszGlobal, pszVM, strValue, "" /* Default */);
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| 262 | if (RT_SUCCESS(rc))
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| 263 | *puValue = strValue.toUInt32();
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| 264 | else
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| 265 | *puValue = uDefault;
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| 266 | return rc;
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| 267 | }
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| 268 |
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