RDProcess — you're now as knowledgeable as Activity Monitor is

RDProcess is an Objective-C class that's an improved version of NSProcessInformation and NSRunningApplication: it gives you as many information about any running process in your system as it even possible to collect.
My favorite thing about RDProcesss is that it handle Sandbox-related information: it can check if a process is even sandboxed, search for the its containter path, etc.
RDProcesss's built on top of Launch Services, AppKit and some old-school POSIX things.

Interface

The library has only one class: RDProcess which implements the methods listed below:

Initialization via PID

- (instancetype)initWithPID: (pid_t)aPid;
Initializes a process with a PID, and collects the following information about it:

• PID value
• Process name (using either LunchServices API or argv[0]-based technique)
• Bundle ID (if the process is a bundled application, this value will be nil otherwise)
• An executable path (using either LaunchServices API or proc_pidpath(), or agrv[0]-based technique)

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Bundle ID-based initialization

• + (NSArray *)allProcessesWithBundleID: (NSString *)bundleID;
  Returns an array of all launched processes with a specifed Bundle ID; each item is initialized using -initWithPID:

• + (void)enumerateProcessesWithBundleID: (NSString *)bundleID usingBlock: (RDProcessEnumerator)block; Iterates a list of launched processes with a specifed Bundle ID using a block; RDProcessEnumerator type's definition is folowing:

  typedef void (^RDProcessEnumerator)(id process, NSString *bundleID, BOOL *stop);

• + (instancetype)youngestProcessWithBundleID: (NSString *)bundleID
  Returns the most recently launched process with a Bundle ID.

• + (instancetype)oldestProcessWithBundleID: (NSString *)bundleID;
  Returns the most oldest process with a Bundle ID.

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Setters

• - (BOOL)setProcessName: (NSString *)new_proc_name;
  This method sets a new value for LaunchServices' «Display Name» key of the process.

Note that some utils like ps or top rather depend on an argv[0] value than on the «Display Name», so the process name may remain unchanged there.

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Getters

General information

• - (pid_t)pid;
  Just a PID of the process. This value if fetched from LaunchService database each time you call this method.

• - (NSString *)processName;
  A name of the process (using either LaunchServices API or argv[0]-based value).

Note, that this method won't return nil value, but a result value may be invalid in any other way, so it's up to you to verify it.
This should only happen for processes that weren't launched via Launch Services and have a currupted argv array.

Bundles and executables

• - (NSString *)bundleID
  A Bundle ID of the process (or nil for non-bundled applications).

• - (NSURL *)bundleURL
  An URL of the process' bundle (or nil for non-bundled applications).

• - (NSString *)bundlePath
  A path of the process' bundle (or nil for non-bundled applications).

• - (NSURL *)executableURL
  An URL of the process' main executable file.

• - (NSString *)executablePath;
  A path of the process' main executable file.

Users and groups

• - (uid_t)ownerUserID; An ID (UID) of a user who owns this process.

• - (NSString *)ownerUserName
  A «short» name of the user who owns this process.

• - (NSString *)ownerFullUserName;
  A full name of the user who owns this process.

• - (NSDictionary *)ownerGroups;
  A list of which the owner user is member of. The result dictionary has the following format: keys are groupd IDs, values are groups names.

Sandbox

• - (BOOL)isSandboxedByOSX;
  Checks if the the process was launched inside the Sandbox environment, i.e. it's sandboxed by OS X.

Note: this method returns YES for any process with invalid PID, so you should also check if -sandboxContainerPath isn't nil.

• - (NSString *)sandboxContainerPath;
  A path of the process' sandbox container directory (or nil if it's not sanboxed).

• - (NSURL *)sandboxContainerURL;
  An URL of the process's sandbox containter directory (or nil of it's not sandboxed).

• - (BOOL)canWriteToFileAtPath: (NSString *)file_path;
- (BOOL)canWriteToFileAtURL: (NSURL *)file_url;
  Checks if the process can write to a specified file.

• - (BOOL)canReadFileAtPath: (NSString *)file_path;
- (BOOL)canReadFileAtURL: (NSURL *)file_url;
  Checks if the process can read a specifed file.

Launch arguments and environment variables

Until the current user is a member of procmod group, these methods will work only for processes owned by this user (for other's processes they just return nil).

• - (NSArray *)launchArguments;
  An Objective-C representaion of the process' argv array.

• - (NSDictionary *)environmentVariables;
  A dictionary containing all the environment variables.

Note: all values are percent escaped.

TODO

• Check if process was sandboxed by user
• Enable\Disable sandbox for the process
• Description of the process' executable architecture (smth like "Intel (64-bit)")
• Check for 64 bit
• CPU usage information
• Memory usage information
• Threads information (active, idle, count)

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If you found any bug(s) or something, please open an issue or a pull request — I'd appreciate your help! (^,,^)

Dmitry Rodionov, 2014
i.am.rodionovd@gmail.com