Jump to content
Sign in to follow this  
BrewManNH

IPv4 Validator function

Recommended Posts

BrewManNH

I have created a function that I hope will validate an IP address sent to it. I have searched the site for one but I wasn't able to find one that was bullet-proof from all the ones I have run up against here. This one will not only validate that the values are in the right range, but will also tell you what Class the IP address falls under. It will check for the invalid number ranges, 0.xx.xx.xx or 127.xx.xx.xx for example, as well as for the reserved ranges above 239.xxx. I've seen a lot of attempts with RegEx but I didn't find one that would correctly validate that all 4 octets are within the valid IPv4 range, most will check to see if the values are above 255 or below 0 or contain anything that isn't a number, but that doesn't validate an IP address it just validates whether the numbers look right.

This will spit back an error if there are any non-numeric characters in the string, or you send it an IP address with less than all 4 octets. Or if your IP address is outside the valid class A-D ranges.

Please beat this function up as much as you can so that I can tell if I missed something, and if there's anyone out there that understands the IPv4 standards that this function misses, please let me know so I can fix it. Thanks for looking.

Global $IPAddress = "192.168.0.122"
$Return = _ValidIP($IPAddress)
If $Return < 0 Then
    Switch @error
        Case 1
            MsgBox(64, "", "Error in IP address." & @LF & "Error code is: 1 - IP address starts with an invalid number = 0, 127 , 169 or is > 239")
        Case 2
            MsgBox(64, "", "Error in IP address." & @LF & "Error code is: 2 - one of the octets of the IP address is out of the range 0-255 or contains invalid characters")
        Case 3
            MsgBox(64, "", "Error in IP address." & @LF & "Error code is: 3 - IP Address is not a valid dotted IP address (ex. valid address 190.40.100.20)")
    EndSwitch
Else
    MsgBox(48, "", $IPAddress & " is a valid Class " & Chr(@error) & " IP address")
EndIf
; #FUNCTION# ====================================================================================================================
; Name...........: _ValidIP
; Description ...: Verifies that an IP address is a valid IPv4 address or not
; Syntax.........: _ValidIP($sIP)
; Parameters ....: $sIP - IP address to validate
;
; Return values .: Success - String containing IP Address in Hex, @error is ASC value of the Class of the IP address
;                 Failure - -1, sets @error
;                 |1 - IP address starts with an invalid number = 0, 127 , 169 or is > 239
;                 |2 - one of the octets of the IP address is out of the range 0-255 or contains invalid characters
;                 |3 - IP Address is not a valid dotted IP address (ex. valid address 190.40.100.20)
; Author ........: BrewManNH
; Modified.......:
; Remarks .......: Class A networks can't start with 0.xx.xx.xx. 127.xx.xx.xx isn't a valid IP address range. 169.xx.xx.xx is reserved and is invalid
;                 and any address that starts above 239, ex. 240.xx.xx.xx is reserved and should never be used or seen out in "the wild".
;                 The address range 224-239 1s reserved as well for Multicast  groups but can be a valid IP address range if you're
;                 using it as such.
;                 This will validate an IP address that is 4 octets long, and contains only numbers and falls within valid IP address values.
;                 Anything else sent to it should fail the test and return -1.
; Related .......:
; Link ..........: _GetIP
; Example .......: No
; ===============================================================================================================================
Func _ValidIP($sIP)
    $Array = StringSplit($sIP, ".", 2)
    If Not IsArray($Array) Or UBound($Array) <> 4 Then Return SetError(3, 0, -1)
    $String = "0x"
    If $Array[0] <= 0 Or $Array[0] > 239 Or $Array[0] = 127 Or $Array[0] = 169 Then
        Return SetError(1, 0, -1)
    EndIf
    For $I = 0 To 3
        If $Array[$I] < 0 Or $Array[$I] > 255 Or Not StringIsDigit($Array[$I]) Then
            Return SetError(2, 0, -1)
        EndIf
        $String &= StringRight(Hex($Array[$I]), 2)
    Next
    Switch $Array[0]
        Case 1 To 126
            SetError(65)
            Return $String
        Case 128 To 191
            SetError(66)
            Return $String
        Case 192 To 223
            SetError(67)
            Return $String
        Case 224 To 239
           SetError(68)
           Return $String
    EndSwitch
EndFunc   ;==>_ValidIP
Edited by BrewManNH

If I posted any code, assume that code was written using the latest release version unless stated otherwise. Also, if it doesn't work on XP I can't help with that because I don't have access to XP, and I'm not going to.
Give a programmer the correct code and he can do his work for a day. Teach a programmer to debug and he can do his work for a lifetime - by Chirag Gude
How to ask questions the smart way!

I hereby grant any person the right to use any code I post, that I am the original author of, on the autoitscript.com forums, unless I've specifically stated otherwise in the code or the thread post. If you do use my code all I ask, as a courtesy, is to make note of where you got it from.

Back up and restore Windows user files _Array.au3 - Modified array functions that include support for 2D arrays.  -  ColorChooser - An add-on for SciTE that pops up a color dialog so you can select and paste a color code into a script.  -  Customizable Splashscreen GUI w/Progress Bar - Create a custom "splash screen" GUI with a progress bar and custom label.  -  _FileGetProperty - Retrieve the properties of a file  -  SciTE Toolbar - A toolbar demo for use with the SciTE editor  -  GUIRegisterMsg demo - Demo script to show how to use the Windows messages to interact with controls and your GUI.  -   Latin Square password generator

Share this post


Link to post
Share on other sites
guinness

This has always had a good results >>


UDF List:

 
_AdapterConnections()_AlwaysRun()_AppMon()_AppMonEx()_ArrayFilter/_ArrayReduce_BinaryBin()_CheckMsgBox()_CmdLineRaw()_ContextMenu()_ConvertLHWebColor()/_ConvertSHWebColor()_DesktopDimensions()_DisplayPassword()_DotNet_Load()/_DotNet_Unload()_Fibonacci()_FileCompare()_FileCompareContents()_FileNameByHandle()_FilePrefix/SRE()_FindInFile()_GetBackgroundColor()/_SetBackgroundColor()_GetConrolID()_GetCtrlClass()_GetDirectoryFormat()_GetDriveMediaType()_GetFilename()/_GetFilenameExt()_GetHardwareID()_GetIP()_GetIP_Country()_GetOSLanguage()_GetSavedSource()_GetStringSize()_GetSystemPaths()_GetURLImage()_GIFImage()_GoogleWeather()_GUICtrlCreateGroup()_GUICtrlListBox_CreateArray()_GUICtrlListView_CreateArray()_GUICtrlListView_SaveCSV()_GUICtrlListView_SaveHTML()_GUICtrlListView_SaveTxt()_GUICtrlListView_SaveXML()_GUICtrlMenu_Recent()_GUICtrlMenu_SetItemImage()_GUICtrlTreeView_CreateArray()_GUIDisable()_GUIImageList_SetIconFromHandle()_GUIRegisterMsg()_GUISetIcon()_Icon_Clear()/_Icon_Set()_IdleTime()_InetGet()_InetGetGUI()_InetGetProgress()_IPDetails()_IsFileOlder()_IsGUID()_IsHex()_IsPalindrome()_IsRegKey()_IsStringRegExp()_IsSystemDrive()_IsUPX()_IsValidType()_IsWebColor()_Language()_Log()_MicrosoftInternetConnectivity()_MSDNDataType()_PathFull/GetRelative/Split()_PathSplitEx()_PrintFromArray()_ProgressSetMarquee()_ReDim()_RockPaperScissors()/_RockPaperScissorsLizardSpock()_ScrollingCredits_SelfDelete()_SelfRename()_SelfUpdate()_SendTo()_ShellAll()_ShellFile()_ShellFolder()_SingletonHWID()_SingletonPID()_Startup()_StringCompact()_StringIsValid()_StringRegExpMetaCharacters()_StringReplaceWholeWord()_StringStripChars()_Temperature()_TrialPeriod()_UKToUSDate()/_USToUKDate()_WinAPI_Create_CTL_CODE()_WinAPI_CreateGUID()_WMIDateStringToDate()/_DateToWMIDateString()Au3 script parsingAutoIt SearchAutoIt3 PortableAutoIt3WrapperToPragmaAutoItWinGetTitle()/AutoItWinSetTitle()CodingDirToHTML5FileInstallrFileReadLastChars()GeoIP databaseGUI - Only Close ButtonGUI ExamplesGUICtrlDeleteImage()GUICtrlGetBkColor()GUICtrlGetStyle()GUIEventsGUIGetBkColor()Int_Parse() & Int_TryParse()IsISBN()LockFile()Mapping CtrlIDsOOP in AutoItParseHeadersToSciTE()PasswordValidPasteBinPosts Per DayPreExpandProtect GlobalsQueue()Resource UpdateResourcesExSciTE JumpSettings INISHELLHOOKShunting-YardSignature CreatorStack()Stopwatch()StringAddLF()/StringStripLF()StringEOLToCRLF()VSCROLLWM_COPYDATAMore Examples...

Updated: 22/04/2018

Share this post


Link to post
Share on other sites
BrewManNH

This has always had a good results >>

That RegEx returns 255.1.1.1 as a valid IP address, it's not because any number over 239 is a reserved IP address and is almost never seen. It might work as a netmask validator, but not as an IP address validator. To be totally correct, any IP address that starts with the first octet being over 223 is also not a valid IP address, but in special cases 224-239 are reserved for multicast groups and can be valid if used for that.

I should have also excluded any IP address that ends in .0 or .255 as they aren't usually valid for an IP address either.


If I posted any code, assume that code was written using the latest release version unless stated otherwise. Also, if it doesn't work on XP I can't help with that because I don't have access to XP, and I'm not going to.
Give a programmer the correct code and he can do his work for a day. Teach a programmer to debug and he can do his work for a lifetime - by Chirag Gude
How to ask questions the smart way!

I hereby grant any person the right to use any code I post, that I am the original author of, on the autoitscript.com forums, unless I've specifically stated otherwise in the code or the thread post. If you do use my code all I ask, as a courtesy, is to make note of where you got it from.

Back up and restore Windows user files _Array.au3 - Modified array functions that include support for 2D arrays.  -  ColorChooser - An add-on for SciTE that pops up a color dialog so you can select and paste a color code into a script.  -  Customizable Splashscreen GUI w/Progress Bar - Create a custom "splash screen" GUI with a progress bar and custom label.  -  _FileGetProperty - Retrieve the properties of a file  -  SciTE Toolbar - A toolbar demo for use with the SciTE editor  -  GUIRegisterMsg demo - Demo script to show how to use the Windows messages to interact with controls and your GUI.  -   Latin Square password generator

Share this post


Link to post
Share on other sites
jchd

Try I won't pretend it's perfect but I tried to make it work for most "standard" ranges


This wonderful site allows debugging and testing regular expressions (many flavors available). An absolute must have in your bookmarks.
Another excellent RegExp tutorial. Don't forget downloading your copy of up-to-date pcretest.exe and pcregrep.exe here
RegExp tutorial: enough to get started
PCRE v8.33 regexp documentation latest available release and currently implemented in AutoIt beta.

SQLitespeed is another feature-rich premier SQLite manager (includes import/export). Well worth a try.
SQLite Expert (freeware Personal Edition or payware Pro version) is a very useful SQLite database manager.
An excellent eBook covering almost every aspect of SQLite3: a must-read for anyone doing serious work.
SQL tutorial (covers "generic" SQL, but most of it applies to SQLite as well)
A work-in-progress SQLite3 tutorial. Don't miss other LxyzTHW pages!
SQLite official website with full documentation (may be newer than the SQLite library that comes standard with AutoIt)

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

  • Similar Content

    • algiuxas
      By algiuxas
      Hello, I have a problem, I downloaded example of TCP Server and Client, but client doesn't work, It shows TCPConnect 10060 error (timeout), I tried to turn on two servers, I think server work, because one server show 10048 error(Address already in use) I don't know why it doesn't work, I edited that script, but it doesn't work still. I tried TCPConnect and TCPAccept from AutoIt3\Examples\Helpfile, but TCPConnect shows error 10060(timeout)... Anybody knows how to fix it? Thanks
      ; SERVER #include <Array.au3> TCPStartup() Dim $Socket_Data[1] $Socket_Data[0] = 0 $Listen = TCPListen(@IPAddress1, 1018, 500) If @error Then ConsoleWrite('!-->['&@Hour&":"&@MIN&":"&@SEC&'] TCPListen error. ( ' & @error & ' )' & @CRLF) Exit EndIf While 1 For $x = $Socket_Data[0] To 1 Step -1 $Recv = TCPRecv($Socket_Data[$x], 1000000) If $Recv Then MsgBox(0, 'Client Number ' & $x & ' with connected socket identifier ' & $Socket_Data[$x], "["&@Hour&":"&@MIN&":"&@SEC&"]"&' Recived msg from Client: ' & @CRLF & $Recv, 5) TCPSend($Socket_Data[$x], 'bye') TCPCloseSocket($Socket_Data[$x]) _ArrayDelete($Socket_Data, $x) $Socket_Data[0] -= 1 EndIf Next _Accept() WEnd Func _Accept() Local $Accept = TCPAccept($Listen) If $Accept <> -1 Then _ArrayAdd($Socket_Data, $Accept) $Socket_Data[0] += 1 EndIf EndFunc ;==>_Accept exit ; CLIENT $Connected = False TCPStartup() ; Start TCP. $timespentconnecting = TimerInit( ) Do $Socket = TCPConnect(@IPAddress1, 1018) ; Connect to server. $nERROR = @error ; TCPConnect @error. If not $nERROR Then ; If client connected to server. $Connected = True Else ; If TCPConnect didn't connected to server. ConsoleWrite( "["&@Hour&":"&@MIN&":"&@SEC&"] TCPConnect error. {CODE:" & $nERROR & "}"&@CRLF ) ; Show error. EndIf sleep(100) ; Sleep 0.1 secounds. Until $Connected = True or TimerDiff( $timespentconnecting ) > 10000 ; If client connected or timer > 10 secounds, stop trying connect to server. If $Connected = False then exit ; If client didn't connected to server, exit. TCPSend($Socket, 'Hi there. My computer name is' & ", " & @ComputerName & ", and its drive serial is " & DriveGetSerial(@HomeDrive)); Send to server data. Do ; Loop until client recives data from server. $Recv = TCPRecv($Socket, 1000000) ; Recive data from server. Until $Recv ; Stop looping when data recived from server. MsgBox(0, "["&@Hour&":"&@MIN&":"&@SEC&"] Recived from server:", $Recv); Show recived data from server. Exit(0) ; Exit.  
×