Prevent duplicates in port list about blocklypropclient

[PropGit]

As it relates to Issue #94, a history list will be used to retain the original Name (as well as IP and MAC) of a wireless port and will contain also a UID and Life field used by this issue to form a more stable and unique list of wireless port identifiers.

The process of making a new entry unique is as follows:

• Compare new item's MAC against the MAC of all items in history list
• If a MAC match is found:
  • Compare Names
    • If they match, simply set Life to 4
    • If they don't match, remove entry and treat as a new non-MAC match item (below)
• If no MAC match is found:
  • Search list for matching Name
    • If no Name match found:
      • Create new entry with Name, IP, MAC, UID=Name, and Life = 4
    • If a Name match found:
      • Repeat Name search for Name=Name+'-#' where # is progressively more right-most MAC digits until no Name match is found (or it's used all possible MAC digits), then create new entry with Name, IP, MAC, a UID (from Name mangling above), and a Life = 4

Return Wi-Fi Identifier list as a sorted list of UID values appended to the wired ports list.

NOTE: Issue #94 describes the trimming of the history list; an important part where the Life field comes into play.

[PropGit]

Solved and merged via PR #96!

The official process of generating a port list (including features of Issue #86 and Issue #94) is:
wiredMaxLife is 2
wirelessMaxLife is 4
portRec is a list containing fields UID, Name, IP, MAC, and Life

• Retrieve list of wired and wireless ports from PropLoader
  • For each port
    • Is it a wired port?
      • If wired port identifier matches an existing UID from the portRec (history list)
        • Reset matching portRec's Life field to wiredMaxLife
      • Else (no wired port match)
        • Create new portRec entry (wired_port_identifier, n/a, n/a, n/a, wiredMaxLife)
    • Else (wireless port)
      • If wireless port's MAC does not match an existing MAC from the portRec (history list)
        • Create new portRec entry (UID=Unique_Name, Name, IP, MAC, wirelessMaxLife)
      • Else (found MAC match)
        • If Name hasn't changed
          • Update portRec's matching entry to IP and wirelessMaxLife
        • Else (Name has changed)
          • Delete old portRec entry
          • Create new portRec entry (UID=Unique_Name, Name, IP, MAC, wirelessMaxLife)
  • Age records (subtract 1 from Life filed)
  • Remove ancients (delete records with Life = 0)

Return Wi-Fi Identifier list as a sorted list of UID values appended to the wired ports list.

For each "Create new portRec entry..." step:
MAC = entry's MAC address stripped of colons (:)
UID = Name
Size = 1

• while UID matches a UID in portRec
  • Set UID to Name + Size rightmost characters from MAC
  • Increment Size
  • If Size = length MAC
    • Prep to repeat MAC further
      • Name = UID
      • Size = 1
• Create new portRec entry (UID, Name, IP, actual_MAC, wirelessMaxLife)