| /** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #pragma once |
| |
| #include "core/Core.h" |
| #include "FlowFileRecord.h" |
| #include "concurrentqueue.h" |
| #include "core/Processor.h" |
| #include "core/ProcessSession.h" |
| #include <pugixml.hpp> |
| #include <winevt.h> |
| #include <sstream> |
| #include <regex> |
| #include <codecvt> |
| #include "utils/OsUtils.h" |
| |
| |
| |
| namespace org { |
| namespace apache { |
| namespace nifi { |
| namespace minifi { |
| namespace wel { |
| |
| |
| enum METADATA { |
| LOG_NAME, |
| SOURCE, |
| TIME_CREATED, |
| EVENTID, |
| OPCODE, |
| EVENT_RECORDID, |
| EVENT_TYPE, |
| TASK_CATEGORY, |
| LEVEL, |
| KEYWORDS, |
| USER, |
| COMPUTER, |
| UNKNOWN |
| }; |
| |
| |
| // this is a continuous enum so we can rely on the array |
| |
| typedef std::vector<std::pair<METADATA, std::string>> METADATA_NAMES; |
| |
| class WindowsEventLogHandler |
| { |
| public: |
| WindowsEventLogHandler() : metadata_provider_(nullptr) { |
| } |
| |
| explicit WindowsEventLogHandler(EVT_HANDLE metadataProvider) : metadata_provider_(metadataProvider) { |
| } |
| |
| std::string getEventMessage(EVT_HANDLE eventHandle) const; |
| |
| |
| EVT_HANDLE getMetadata() const; |
| |
| private: |
| EVT_HANDLE metadata_provider_; |
| }; |
| |
| class WindowsEventLogMetadata { |
| public: |
| virtual ~WindowsEventLogMetadata() = default; |
| virtual std::string getEventData(EVT_FORMAT_MESSAGE_FLAGS flags) const = 0; |
| virtual std::string getEventTimestamp() const = 0; |
| virtual short getEventTypeIndex() const = 0; |
| |
| static std::string getMetadataString(METADATA val) { |
| static std::map< METADATA, std::string> map = { |
| {LOG_NAME, "LOG_NAME" }, |
| {SOURCE,"SOURCE"}, |
| {TIME_CREATED,"TIME_CREATED" }, |
| {EVENTID,"EVENTID"}, |
| {OPCODE,"OPCODE"}, |
| {EVENT_RECORDID,"EVENT_RECORDID"}, |
| {EVENT_TYPE,"EVENT_TYPE"}, |
| {TASK_CATEGORY, "TASK_CATEGORY"}, |
| {LEVEL,"LEVEL"}, |
| {KEYWORDS,"KEYWORDS"}, |
| {USER,"USER"}, |
| {COMPUTER,"COMPUTER"} |
| }; |
| |
| return map[val]; |
| } |
| |
| static METADATA getMetadataFromString(const std::string &val) { |
| static std::map< std::string, METADATA> map = { |
| {"LOG_NAME",LOG_NAME}, |
| {"SOURCE",SOURCE}, |
| {"TIME_CREATED",TIME_CREATED }, |
| {"EVENTID",EVENTID}, |
| {"OPCODE",OPCODE}, |
| {"EVENT_RECORDID",EVENT_RECORDID}, |
| {"TASK_CATEGORY", TASK_CATEGORY}, |
| {"EVENT_TYPE",EVENT_TYPE}, |
| {"LEVEL",LEVEL}, |
| {"KEYWORDS",KEYWORDS}, |
| {"USER",USER}, |
| {"COMPUTER",COMPUTER} |
| }; |
| |
| auto enumVal = map.find(val); |
| if (enumVal != std::end(map)) { |
| return enumVal->second; |
| } |
| else { |
| return METADATA::UNKNOWN; |
| } |
| } |
| |
| static std::string getComputerName() { |
| static std::string computer_name; |
| if (computer_name.empty()) { |
| char buff[10248]; |
| DWORD size = sizeof(buff); |
| if (GetComputerNameExA(ComputerNameDnsFullyQualified, buff, &size)) { |
| computer_name = buff; |
| } |
| else { |
| computer_name = "N/A"; |
| } |
| } |
| return computer_name; |
| } |
| }; |
| |
| class WindowsEventLogMetadataImpl : public WindowsEventLogMetadata { |
| public: |
| WindowsEventLogMetadataImpl(EVT_HANDLE metadataProvider, EVT_HANDLE event_ptr) : metadata_ptr_(metadataProvider), event_timestamp_(0), event_ptr_(event_ptr) { |
| renderMetadata(); |
| } |
| |
| std::string getEventData(EVT_FORMAT_MESSAGE_FLAGS flags) const override; |
| |
| std::string getEventTimestamp() const override { return event_timestamp_str_; } |
| |
| short getEventTypeIndex() const override { return event_type_index_; } |
| |
| private: |
| void renderMetadata(); |
| |
| uint64_t event_timestamp_; |
| std::string event_type_; |
| short event_type_index_; |
| std::string event_timestamp_str_; |
| EVT_HANDLE event_ptr_; |
| EVT_HANDLE metadata_ptr_; |
| }; |
| |
| class WindowsEventLogHeader { |
| public: |
| explicit WindowsEventLogHeader(METADATA_NAMES header_names) : header_names_(header_names) {} |
| |
| void setDelimiter(const std::string &delim); |
| |
| template<typename MetadataCollection> |
| std::string getEventHeader(const MetadataCollection& metadata_collection) const; |
| |
| private: |
| std::string createDefaultDelimiter(size_t max, size_t length) const; |
| |
| std::string delimiter_; |
| METADATA_NAMES header_names_; |
| }; |
| |
| template<typename MetadataCollection> |
| std::string WindowsEventLogHeader::getEventHeader(const MetadataCollection& metadata_collection) const { |
| std::stringstream eventHeader; |
| size_t max = 1; |
| for (const auto &option : header_names_) { |
| max = (std::max(max, option.second.size())); |
| } |
| ++max; // increment by one to get space. |
| for (const auto &option : header_names_) { |
| auto name = option.second; |
| if (!name.empty()) { |
| eventHeader << name << (delimiter_.empty() ? createDefaultDelimiter(max, name.size()) : delimiter_); |
| } |
| eventHeader << utils::StringUtils::trim(metadata_collection(option.first)) << std::endl; |
| } |
| |
| return eventHeader.str(); |
| } |
| |
| } /* namespace wel */ |
| } /* namespace minifi */ |
| } /* namespace nifi */ |
| } /* namespace apache */ |
| } /* namespace org */ |
| |