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+'use strict';
+// @ts-check
+// ==================================================================================
+// users.js
+// ----------------------------------------------------------------------------------
+// Description:   System Information - library
+//                for Node.js
+// Copyright:     (c) 2014 - 2022
+// Author:        Sebastian Hildebrandt
+// ----------------------------------------------------------------------------------
+// License:       MIT
+// ==================================================================================
+// 11. Users/Sessions
+// ----------------------------------------------------------------------------------
+
+const exec = require('child_process').exec;
+const util = require('./util');
+
+let _platform = process.platform;
+
+const _linux = (_platform === 'linux' || _platform === 'android');
+const _darwin = (_platform === 'darwin');
+const _windows = (_platform === 'win32');
+const _freebsd = (_platform === 'freebsd');
+const _openbsd = (_platform === 'openbsd');
+const _netbsd = (_platform === 'netbsd');
+const _sunos = (_platform === 'sunos');
+
+// let _winDateFormat = {
+//   dateFormat: '',
+//   dateSeperator: '',
+//   timeFormat: '',
+//   timeSeperator: '',
+//   amDesignator: '',
+//   pmDesignator: ''
+// };
+
+// --------------------------
+// array of users online = sessions
+
+// function getWinCulture() {
+//   return new Promise((resolve) => {
+//     process.nextTick(() => {
+//       if (!_winDateFormat.dateFormat) {
+//         util.powerShell('(get-culture).DateTimeFormat')
+//           .then(data => {
+//             let lines = data.toString().split('\r\n');
+//             _winDateFormat.dateFormat = util.getValue(lines, 'ShortDatePattern', ':');
+//             _winDateFormat.dateSeperator = util.getValue(lines, 'DateSeparator', ':');
+//             _winDateFormat.timeFormat = util.getValue(lines, 'ShortTimePattern', ':');
+//             _winDateFormat.timeSeperator = util.getValue(lines, 'TimeSeparator', ':');
+//             _winDateFormat.amDesignator = util.getValue(lines, 'AMDesignator', ':');
+//             _winDateFormat.pmDesignator = util.getValue(lines, 'PMDesignator', ':');
+
+//             resolve(_winDateFormat);
+//           })
+//           .catch(() => {
+//             resolve(_winDateFormat);
+//           });
+//       } else {
+//         resolve(_winDateFormat);
+//       }
+//     });
+//   });
+// }
+
+function parseUsersLinux(lines, phase) {
+  let result = [];
+  let result_who = [];
+  let result_w = {};
+  let w_first = true;
+  let w_header = [];
+  let w_pos = [];
+  let who_line = {};
+
+  let is_whopart = true;
+  lines.forEach(function (line) {
+    if (line === '---') {
+      is_whopart = false;
+    } else {
+      let l = line.replace(/ +/g, ' ').split(' ');
+
+      // who part
+      if (is_whopart) {
+        result_who.push({
+          user: l[0],
+          tty: l[1],
+          date: l[2],
+          time: l[3],
+          ip: (l && l.length > 4) ? l[4].replace(/\(/g, '').replace(/\)/g, '') : ''
+        });
+      } else {
+        // w part
+        if (w_first) {    // header
+          w_header = l;
+          w_header.forEach(function (item) {
+            w_pos.push(line.indexOf(item));
+          });
+          w_first = false;
+        } else {
+          // split by w_pos
+          result_w.user = line.substring(w_pos[0], w_pos[1] - 1).trim();
+          result_w.tty = line.substring(w_pos[1], w_pos[2] - 1).trim();
+          result_w.ip = line.substring(w_pos[2], w_pos[3] - 1).replace(/\(/g, '').replace(/\)/g, '').trim();
+          result_w.command = line.substring(w_pos[7], 1000).trim();
+          // find corresponding 'who' line
+          who_line = result_who.filter(function (obj) {
+            return (obj.user.substring(0, 8).trim() === result_w.user && obj.tty === result_w.tty);
+          });
+          if (who_line.length === 1) {
+            result.push({
+              user: who_line[0].user,
+              tty: who_line[0].tty,
+              date: who_line[0].date,
+              time: who_line[0].time,
+              ip: who_line[0].ip,
+              command: result_w.command
+            });
+          }
+        }
+      }
+    }
+  });
+  if (result.length === 0 && phase === 2) {
+    return result_who;
+  } else {
+    return result;
+  }
+}
+
+function parseUsersDarwin(lines) {
+  let result = [];
+  let result_who = [];
+  let result_w = {};
+  let who_line = {};
+
+  let is_whopart = true;
+  lines.forEach(function (line) {
+    if (line === '---') {
+      is_whopart = false;
+    } else {
+      let l = line.replace(/ +/g, ' ').split(' ');
+
+      // who part
+      if (is_whopart) {
+        result_who.push({
+          user: l[0],
+          tty: l[1],
+          date: ('' + new Date().getFullYear()) + '-' + ('0' + ('JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC'.indexOf(l[2].toUpperCase()) / 3 + 1)).slice(-2) + '-' + ('0' + l[3]).slice(-2),
+          time: l[4],
+        });
+      } else {
+        // w part
+        // split by w_pos
+        result_w.user = l[0];
+        result_w.tty = l[1];
+        result_w.ip = (l[2] !== '-') ? l[2] : '';
+        result_w.command = l.slice(5, 1000).join(' ');
+        // find corresponding 'who' line
+        who_line = result_who.filter(function (obj) {
+          return (obj.user === result_w.user && (obj.tty.substring(3, 1000) === result_w.tty || obj.tty === result_w.tty));
+        });
+        if (who_line.length === 1) {
+          result.push({
+            user: who_line[0].user,
+            tty: who_line[0].tty,
+            date: who_line[0].date,
+            time: who_line[0].time,
+            ip: result_w.ip,
+            command: result_w.command
+          });
+        }
+      }
+    }
+  });
+  return result;
+}
+
+function users(callback) {
+
+  return new Promise((resolve) => {
+    process.nextTick(() => {
+      let result = [];
+
+      // linux
+      if (_linux) {
+        exec('who --ips; echo "---"; w | tail -n +2', function (error, stdout) {
+          if (!error) {
+            // lines / split
+            let lines = stdout.toString().split('\n');
+            result = parseUsersLinux(lines, 1);
+            if (result.length === 0) {
+              exec('who; echo "---"; w | tail -n +2', function (error, stdout) {
+                if (!error) {
+                  // lines / split
+                  lines = stdout.toString().split('\n');
+                  result = parseUsersLinux(lines, 2);
+                }
+                if (callback) { callback(result); }
+                resolve(result);
+              });
+            } else {
+              if (callback) { callback(result); }
+              resolve(result);
+            }
+          } else {
+            if (callback) { callback(result); }
+            resolve(result);
+          }
+        });
+      }
+      if (_freebsd || _openbsd || _netbsd) {
+        exec('who; echo "---"; w -ih', function (error, stdout) {
+          if (!error) {
+            // lines / split
+            let lines = stdout.toString().split('\n');
+            result = parseUsersDarwin(lines);
+          }
+          if (callback) { callback(result); }
+          resolve(result);
+        });
+      }
+      if (_sunos) {
+        exec('who; echo "---"; w -h', function (error, stdout) {
+          if (!error) {
+            // lines / split
+            let lines = stdout.toString().split('\n');
+            result = parseUsersDarwin(lines);
+          }
+          if (callback) { callback(result); }
+          resolve(result);
+        });
+      }
+
+      if (_darwin) {
+        exec('who; echo "---"; w -ih', function (error, stdout) {
+          if (!error) {
+            // lines / split
+            let lines = stdout.toString().split('\n');
+            result = parseUsersDarwin(lines);
+          }
+          if (callback) { callback(result); }
+          resolve(result);
+        });
+      }
+      if (_windows) {
+        try {
+          // const workload = [];
+          // // workload.push(util.powerShell('Get-CimInstance -ClassName Win32_Account | fl *'));
+          // workload.push(util.powerShell('Get-WmiObject Win32_LogonSession | fl *'));
+          // workload.push(util.powerShell('Get-WmiObject Win32_LoggedOnUser | fl *'));
+          // workload.push(util.powerShell('Get-WmiObject Win32_Process -Filter "name=\'explorer.exe\'" | Select @{Name="domain";Expression={$_.GetOwner().Domain}}, @{Name="username";Expression={$_.GetOwner().User}} | fl'));
+          // Promise.all(
+          //   workload
+          // ).then(data => {
+          let cmd = 'Get-WmiObject Win32_LogonSession | select LogonId,StartTime | fl' + '; echo \'#-#-#-#\';';
+          cmd += 'Get-WmiObject Win32_LoggedOnUser | select antecedent,dependent | fl ' + '; echo \'#-#-#-#\';';
+          cmd += 'Get-WmiObject Win32_Process -Filter "name=\'explorer.exe\'" | Select @{Name="sessionid";Expression={$_.SessionId}}, @{Name="domain";Expression={$_.GetOwner().Domain}}, @{Name="username";Expression={$_.GetOwner().User}} | fl' + '; echo \'#-#-#-#\';';
+          cmd += 'query user';
+          util.powerShell(cmd).then(data => {
+            // controller + vram
+            // let accounts = parseWinAccounts(data[0].split(/\n\s*\n/));
+            if (data) {
+              data = data.split('#-#-#-#');
+              let sessions = parseWinSessions((data[0] || '').split(/\n\s*\n/));
+              let loggedons = parseWinLoggedOn((data[1] || '').split(/\n\s*\n/));
+              let queryUser = parseWinUsersQuery((data[3] || '').split('\r\n'));
+              let users = parseWinUsers((data[2] || '').split(/\n\s*\n/), queryUser);
+              for (let id in loggedons) {
+                if ({}.hasOwnProperty.call(loggedons, id)) {
+                  loggedons[id].dateTime = {}.hasOwnProperty.call(sessions, id) ? sessions[id] : '';
+                }
+              }
+              users.forEach(user => {
+                let dateTime = '';
+                for (let id in loggedons) {
+                  if ({}.hasOwnProperty.call(loggedons, id)) {
+                    if (loggedons[id].user === user.user && (!dateTime || dateTime < loggedons[id].dateTime)) {
+                      dateTime = loggedons[id].dateTime;
+                    }
+                  }
+                }
+
+                result.push({
+                  user: user.user,
+                  tty: user.tty,
+                  date: `${dateTime.substr(0, 4)}-${dateTime.substr(4, 2)}-${dateTime.substr(6, 2)}`,
+                  time: `${dateTime.substr(8, 2)}:${dateTime.substr(10, 2)}`,
+                  ip: '',
+                  command: ''
+                });
+              });
+            }
+            if (callback) { callback(result); }
+            resolve(result);
+
+          });
+          // util.powerShell('query user').then(stdout => {
+          //   if (stdout) {
+          //     // lines / split
+          //     let lines = stdout.toString().split('\r\n');
+          //     getWinCulture()
+          //       .then(culture => {
+          //         result = parseUsersWin(lines, culture);
+          //         if (callback) { callback(result); }
+          //         resolve(result);
+          //       });
+          //   } else {
+          //     if (callback) { callback(result); }
+          //     resolve(result);
+          //   }
+          // });
+        } catch (e) {
+          if (callback) { callback(result); }
+          resolve(result);
+        }
+      }
+
+    });
+  });
+}
+
+// function parseWinAccounts(accountParts) {
+//   const accounts = [];
+//   accountParts.forEach(account => {
+//     const lines = account.split('\r\n');
+//     const name = util.getValue(lines, 'name', ':', true);
+//     const domain = util.getValue(lines, 'domain', ':', true);
+//     accounts.push(`${domain}\${name}`);
+//   });
+//   return accounts;
+// }
+
+function parseWinSessions(sessionParts) {
+  const sessions = {};
+  sessionParts.forEach(session => {
+    const lines = session.split('\r\n');
+    const id = util.getValue(lines, 'LogonId');
+    const starttime = util.getValue(lines, 'starttime');
+    if (id) {
+      sessions[id] = starttime;
+    }
+  });
+  return sessions;
+}
+
+function fuzzyMatch(name1, name2) {
+  name1 = name1.toLowerCase();
+  name2 = name2.toLowerCase();
+  let eq = 0;
+  let len = name1.length;
+  if (name2.length > len) { len = name2.length; }
+
+  for (let i = 0; i < len; i++) {
+    const c1 = name1[i] || '';
+    const c2 = name2[i] || '';
+    if (c1 === c2) { eq++; }
+  }
+  return (len > 10 ? eq / len > 0.9 : (len > 0 ? eq / len > 0.8 : false));
+}
+
+function parseWinUsers(userParts, userQuery) {
+  const users = [];
+  userParts.forEach(user => {
+    const lines = user.split('\r\n');
+
+    const domain = util.getValue(lines, 'domain', ':', true);
+    const username = util.getValue(lines, 'username', ':', true);
+    const sessionid = util.getValue(lines, 'sessionid', ':', true);
+
+    if (username) {
+      const quser = userQuery.filter(item => fuzzyMatch(item.user, username));
+      users.push({
+        domain,
+        user: username,
+        tty: quser && quser[0] && quser[0].tty ? quser[0].tty : sessionid
+      });
+    }
+  });
+  return users;
+}
+
+function parseWinLoggedOn(loggedonParts) {
+  const loggedons = {};
+  loggedonParts.forEach(loggedon => {
+    const lines = loggedon.split('\r\n');
+
+    const antecendent = util.getValue(lines, 'antecedent', ':', true);
+    let parts = antecendent.split(',');
+    const domainParts = parts.length > 1 ? parts[0].split('=') : [];
+    const nameParts = parts.length > 1 ? parts[1].split('=') : [];
+    const domain = domainParts.length > 1 ? domainParts[1].replace(/"/g, '') : '';
+    const name = nameParts.length > 1 ? nameParts[1].replace(/"/g, '') : '';
+    const dependent = util.getValue(lines, 'dependent', ':', true);
+    parts = dependent.split('=');
+    const id = parts.length > 1 ? parts[1].replace(/"/g, '') : '';
+    if (id) {
+      loggedons[id] = {
+        domain,
+        user: name
+      };
+    }
+  });
+  return loggedons;
+}
+
+function parseWinUsersQuery(lines) {
+  lines = lines.filter(item => item);
+  let result = [];
+  const header = lines[0];
+  const headerDelimiter = [];
+  if (header) {
+    const start = (header[0] === ' ') ? 1 : 0;
+    headerDelimiter.push(start - 1);
+    let nextSpace = 0;
+    for (let i = start + 1; i < header.length; i++) {
+      if (header[i] === ' ' && ((header[i - 1] === ' ') || (header[i - 1] === '.'))) {
+        nextSpace = i;
+      } else {
+        if (nextSpace) {
+          headerDelimiter.push(nextSpace);
+          nextSpace = 0;
+        }
+      }
+    }
+    for (let i = 1; i < lines.length; i++) {
+      if (lines[i].trim()) {
+        const user = lines[i].substring(headerDelimiter[0] + 1, headerDelimiter[1]).trim() || '';
+        const tty = lines[i].substring(headerDelimiter[1] + 1, headerDelimiter[2] - 2).trim() || '';
+        // const dateTime = util.parseDateTime(lines[i].substring(headerDelimiter[5] + 1, 2000).trim(), culture) || '';
+        result.push({
+          user: user,
+          tty: tty,
+        });
+      }
+    }
+  }
+  return result;
+}
+
+exports.users = users;