UserGroupInfo

java.lang.Object

oshi.util.UserGroupInfo

@ThreadSafe public final class UserGroupInfo extends Object

Utility class to temporarily cache the userID and group maps in *nix, for parsing process ownership. Cache expires after one minute.

Field Summary

Fields

Modifier and Type

Field

Description

private static final boolean

ELEVATED

private static final Supplier<Map<String,String>>

GROUPS_ID_MAP

private static final Supplier<Map<String,String>>

USERS_ID_MAP
Constructor Summary

Constructors

Modifier

Constructor

Description

private

UserGroupInfo()
Method Summary

Modifier and Type

Method

Description

private static String

getentGroup(String groupId)

private static String

getentPasswd(String userId)

private static Map<String,String>

getGroupMap()

static String

getGroupName(String groupId)

Gets the group name for a given ID

static String

getUser(String userId)

Gets a user from their ID

private static Map<String,String>

getUserMap()

static boolean

isElevated()

Determine whether the current process has elevated permissions such as sudo / Administrator

private static Map<String,String>

parseGroup(List<String> group)

private static Map<String,String>

parsePasswd(List<String> passwd)

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details
- USERS_ID_MAP
  
  private static final Supplier<Map<String,String>> USERS_ID_MAP
- GROUPS_ID_MAP
  
  private static final Supplier<Map<String,String>> GROUPS_ID_MAP
- ELEVATED
  
  private static final boolean ELEVATED
Constructor Details
- UserGroupInfo
  
  private UserGroupInfo()
Method Details
- isElevated
  
  public static boolean isElevated()
  
  Determine whether the current process has elevated permissions such as sudo / Administrator
  
  Returns:
  
  True if this process has elevated permissions
- getUser
  
  public static String getUser(String userId)
  
  Gets a user from their ID
  
  Parameters:
  
  userId - a user ID
  
  Returns:
  
  a pair containing that user id as the first element and the user name as the second
- getGroupName
  
  public static String getGroupName(String groupId)
  
  Gets the group name for a given ID
  
  Parameters:
  
  groupId - a String object.
  
  Returns:
  
  a String object.
- getUserMap
  
  private static Map<String,String> getUserMap()
- getentPasswd
  
  private static String getentPasswd(String userId)
- parsePasswd
  
  private static Map<String,String> parsePasswd(List<String> passwd)
- getGroupMap
  
  private static Map<String,String> getGroupMap()
- getentGroup
  
  private static String getentGroup(String groupId)
- parseGroup
  
  private static Map<String,String> parseGroup(List<String> group)