Check Security context flags

sec_context.py

from ctypes import CDLL, byref, c_uint32
Security = CDLL('/System/Library/Frameworks/Security.framework/Versions/Current/Security')

kcallerSecuritySession = c_uint32(-1)
my_session   = c_uint32(0)
session_bits = c_uint32(0)

result = Security.SessionGetInfo(kcallerSecuritySession, byref(my_session), byref(session_bits))

flags = session_bits.value

print "sessionIsRoot:",           bool(flags & 0x0001)
print "sessionHasGraphicAccess:", bool(flags & 0x0010)
print "sessionHasTTY:",           bool(flags & 0x0020)
print "sessionIsRemote:",         bool(flags & 0x1000)