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113 lines
3.5 KiB
C++
113 lines
3.5 KiB
C++
/**
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* Copyright (C) 2017-2018, U.S. Government
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*/
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#ifndef HIRS_PROVISIONERTPM2_INCLUDE_TPM2TOOLSUTILS_H_
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#define HIRS_PROVISIONERTPM2_INCLUDE_TPM2TOOLSUTILS_H_
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#include <string>
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#include <unordered_map>
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namespace hirs {
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namespace tpm2_tools_utils {
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/**
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* Enum class that provides list of supported tpm2_tools versions
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*/
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enum class Tpm2ToolsVersion {
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VERSION_1_1_0,
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VERSION_2_1_0,
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VERSION_3
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};
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/**
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* Utility class that determines the version of tpm2_tools present on the
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* system.
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*/
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class Tpm2ToolsVersionChecker {
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private:
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static const std::unordered_map<std::string, Tpm2ToolsVersion> kVersionMap;
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static const std::unordered_map<std::string,
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Tpm2ToolsVersion> kMaxSupportedVersionMap;
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static std::string getDistribution();
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public:
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/**
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* Makes a simple tpm2-tools call to determine the version available on the
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* current system.
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*
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* @return enum specifying the version of tpm2-tools available locally
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*/
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static Tpm2ToolsVersion findTpm2ToolsVersion();
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};
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/**
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* Utility class that provides functions to parse information from tpm2_tools
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* output.
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*/
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class Tpm2ToolsOutputParser {
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public:
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/**
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* Parses the provided Non-volatile (NV) Index List for the data size of
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* the index at the prescribed NV handle. Expects output from tpm2_nvlist.
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*
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* @param nvHandle memory address to search the nvListOutput for
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* @param nvListOutput the NV Index List to search for the data size
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* @return the size of the desired NV index or 0 if the index isn't found
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*/
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static uint16_t parseNvDataSize(const std::string& nvHandle,
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const std::string& nvListOutput);
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/**
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* Pulls the data out of the output from a tpm2_nvread command.
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*
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* @param nvReadOutput the output from a call to tpm2_nvread
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* @return the data serialized as bytes, or an empty string if
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* nvReadOutput improperly formatted
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*/
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static std::string parseNvReadOutput(const std::string& nvReadOutput);
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/**
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* Parses the provided Persistent Object List for the provided handle.
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*
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* @param handle memory address to search the nvListPersistentOutput for
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* @param listPersistentOutput the Persistent Object list to search
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* @return true, if handle is found / false, otherwise
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*/
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static bool parsePersistentObjectExists(const std::string& handle,
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const std::string& listPersistentOutput);
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/**
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* Parses the provided tpm2-tool output for a TPM Error Code.
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*
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* @param toolOutput the output from a call to any of the tpm2-tools
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* @return a TPM error code if found, or an empty string, otherwise
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*/
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static std::string parseTpmErrorCode(const std::string& toolOutput);
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/**
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* Parses the provided tpm2-tool output for a tpm2_tools version.
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*
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* @param toolOutput the output from a call to any of the tpm2-tools
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* @return a tpm2_tools version if found, or an empty string, otherwise
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*/
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static std::string parseTpm2ToolsVersion(const std::string& toolOutput);
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/**
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* Parses the provided tpm2-tool version for the major version.
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*
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* @param toolVersion the output from a call to parseTpm2ToolsVersion
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* @return tpm2_tools major version if found, or an empty string, otherwise
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*/
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static std::string parseTpm2ToolsMajorVersion(
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const std::string& toolVersion);
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};
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} // namespace tpm2_tools_utils
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} // namespace hirs
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#endif // HIRS_PROVISIONERTPM2_INCLUDE_TPM2TOOLSUTILS_H_
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