java - Get running processes using JNA -


i trying obtain list of running processes on windows machine.

i trying winapi calls via jna enumprocesses -> openprocess -> getmodulebasenamew -> closehandle fails @ openprocess call. getlasterror returns 5 (error_access_denied).

this code:

public static final int process_query_information = 0x0400; public static final int process_vm_read = 0x0010; public static final int process_vm_write = 0x0020; public static final int process_vm_operation = 0x0008;   public interface psapi extends stdcalllibrary {     psapi instance = (psapi) native.loadlibrary("psapi", psapi.class);      boolean enumprocesses(int[] processidsout, int size, int[] bytesreturned);      dword getmodulebasenamew(pointer hprocess, pointer hmodule, byte[] lpbasename, int nsize);  }  public interface kernel32 extends stdcalllibrary {     kernel32 instance = (kernel32) native.loadlibrary("kernel32", kernel32.class);      pointer openprocess(int dwdesiredaccess, boolean binherithandle, int dwprocessid);      boolean closehandle(pointer hobject);  }  public static void main(string[] args) {     int[] processlist = new int[1024];     int[] dummylist = new int[1024];     psapi.instance.enumprocesses(processlist, 1024, dummylist);      (int pid : processlist) {         system.out.println(pid);         pointer ph = kernel32.instance.openprocess(process_vm_read, false, pid);          try {             thread.sleep(1000);         } catch (exception ignore) {         }          system.err.println(com.sun.jna.platform.win32.kernel32.instance.getlasterror()); // <- 5         system.err.println(ph); // <- null         if (ph != null) {             byte[] filename = new byte[512];             psapi.instance.getmodulebasenamew(ph, new pointer(0), filename, 512);              try {                 thread.sleep(1000);             } catch (exception ignore) {             }              system.err.println(native.tostring(filename));             kernel32.instance.closehandle(ph);         }      }  }

calling openprocess process_vm_read means want read memory of process. this, need se_debug_privlege. application doesn't have privilege why getting access denied.

check msdn article readprocessmemory. there community content on how acquire privilege.


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