NULL mag Issue 08 27 Better access() mpy function

eZine lover (@eZine)

Published in 

null magazine

 · 26 Dec 2020

  

 

 
    mystics mpy language has a function to check if an acs string is valid, 
    depending the current users level. while trying to use it, i think i  
    found an abnormal behavior... or at least, that the function is not  
    100% accurate implemented. 
     
    the problem was, that when you try to use the access() function, of  
    mpy, with an acs string like "g1s20", even if the user level is  
    greater than 20, it will return a false value. the reason is that the  
    function expects only a "s20" type string, with only the security  
    level code and not other acs codes. 
     
    so i wrote another function that can manipulate any type of acs  
    string. the function will only tell you about the users security level  
    and other types of acs codes, like if a user has chosen a specific  
    file/msg base etc. 
     
    the syntax is simple:  isacs(useracs,otheracs) 
     
    where useracs, is the acs level of the user we want to check ex.20 and  
    otheracs is any type of an acs string ex."z1g2s40" etc. for example: 
     
    isacs('20','g1s40'), will return False cause 20 is less than 40. 
     
    the complete function is this:    
                           

def isacs(useracs,otheracs): 
  if otheracs == "": 
    return True 
  val = "" 
  inacs = False 
  s = otheracs 
  i = 0 
  while i <= len(s)-1: 
    if inacs: 
      if s[i].isdigit(): 
        val = val + s[i] 
      else: 
        break 
    if s[i] == 's': 
      inacs = True 
    i += 1 

  if useracs >= int(val): 
    return True 
  else: 
    return False 
     
     

 
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