Get MAC Address

Garry K

Does this code work with Mac OS.
With windows the tempfile goes to desktop and gets discarded when finished.
Where does the file go for Mac OS and do we have rights?


      # do this for testing on a mac
      @@windows = false 

      # do this for testing on windows
      # @@windows = false 

      mac_addr = []
      cmd = @@windows ? 'ipconfig /all' ; 'ifconfig'

      # choose lines that have only six pairs of 2 char hex values 
      # separated by either a ; or -
      regex = Regexp.compile('(..[;-]){5}..')

      tempfile = "temp.txt"
      `#{cmd} > #{tempfile}`
      File.open(tempfile, 'r') do |file|
        lines = file.grep(regex)
        lines.each { |line| mac_addr << (line.strip[-17, 17]).upcase().gsub(/-/, ';') }
      end
      File.unlink(tempfile)

      # if windows and we have more than 1 mac address 
      # then use the second one otherwise use the first
      # if not windows then use the first address
      index = @@windows && mac_addr.length > 1 ? 1 ; 0
      @@mac_address = mac_addr[index]

Dan Rathbun

The temp file only goes to the desktop by chance that your current working directory is pointing at the desktop directory.

WIN = RUBY_PLATFORM !~ /darwin/i OSX =( not WIN ) desktop_dir = WIN ? "#{ENV['USERPROFILE']}/Desktop" : "~/Desktop"
Assuming that the name of the directory is not language localized, but it likely IS.

You should not ever assume some other script has not changed the working directory.

All older SketchUp versions attempted to set it to the user's home directory.
SketchUp 2014 (on my machine,) has left me in "#{ENV['SystemRoot']}/System32" (why I do not know, but have asked.)

To see what the current working directory is, use:
Dir::getwd
or, it's alias:
Dir::pwd

To temporarily change the working directory (and have it change back to whatever it was,) use the blockform of the Dir::chdir class method.

Dir;;chdir( RUBY_PLATFORM !~ /darwin/i ? "#{ENV['USERPROFILE']}/Desktop" ; "~/Desktop" ) {
      # do this for testing on a mac
      @@windows = false 

      # do this for testing on windows
      # @@windows = false 

      mac_addr = []
      cmd = @@windows ? 'ipconfig /all' ; 'ifconfig'

      # choose lines that have only six pairs of 2 char hex values 
      # separated by either a ; or -
      regex = Regexp.compile('(..[;-]){5}..')

      tempfile = "temp.txt"
      `#{cmd} > #{tempfile}`
      File.open(tempfile, 'r') do |file|
        lines = file.grep(regex)
        lines.each { |line| mac_addr << (line.strip[-17, 17]).upcase().gsub(/-/, ';') }
      end
      File.unlink(tempfile)

      # if windows and we have more than 1 mac address 
      # then use the second one otherwise use the first
      # if not windows then use the first address
      index = @@windows && mac_addr.length > 1 ? 1 ; 0
      @@mac_address = mac_addr[index]

} # chdir block

To test for access rights:
File::directory?( dirname ) && File::writable?( dirname )

See the File class for other class query methods to determine access info: executable?(), executable_real?(), readable?(), readable_real?(), writable_real?, etc.

Be aware that path strings with unicode characters will not work well under Ruby 1.8.x on PC. (Mac OSX does not have these problems.)

Garry K

Thanks Dan. I should have thought about the whole issue of current working directory. This has been true since the beginning of DOS.

I'm going to put a config folder in my own plugin folder. I can put the temp.txt file there. I can also use the folder to put user custom settings so that updates don't overwrite user settings.

Thanks

tt_su

@garry k said:

I'm going to put a config folder in my own plugin folder. I can put the temp.txt file there. I can also use the folder to put user custom settings so that updates don't overwrite user settings.

For SketchUp versions older than SU2014 that might cause problems if the user doesn't have full permissions to the Plugins folder since Windows locks down Program Files quite tight. Ruby will in many cases not have write access.

Garry K

@tt_su said:

For SketchUp versions older than SU2014 that might cause problems if the user doesn't have full permissions to the Plugins folder since Windows locks down Program Files quite tight. Ruby will in many cases not have write access.

OK - then what do you suggest. I will need to find a location to temporarily write a file. This will be for Windows and Mac.

I suppose I could use one strategy for SU 2014 and another for older versions.

tt_su

For temporary files in SketchUp < 2014 I would write to the temp folder based on that the ENV variable gives you:

temp_path = File.expand_path(ENV['TMPDIR'] || ENV['TMP'] || ENV['TEMP'])

For settings and persistent preferences, if you want to write that to file it will get tricky in older SketchUp. I stick with using Sketchup.write_default/read_default.

This is one of those areas where you probably would end up with code branching for the different ruby interpreters.

Dan Rathbun

@tt_su said:

For temporary files in SketchUp < 2014 I would write to the temp folder based on that the ENV variable gives you:

But... the TMP/TEMP directory is in the user path, and IF the username has unicode characters, then older versions on PC have problems.

We would need to employ tricks like in TIG's PCFIleTools.
http://sketchucation.com/forums/viewtopic.php?f=180%26amp;t=43007%26amp;p=385472

tt_su

@dan rathbun said:

But... the TMP/TEMP directory is in the user path, and IF the username has unicode characters, then older versions on PC have problems.

On the machines I tested this on the ENV variable would return DOS 8.3 short filepaths for the temp paths - and that works for Ruby 1.8 since they call the ASCII versions of the Windows file functions that can handle that.

That said, there's always a change that ENV variables might be altered by someone, but it has worked fine for several years.

In theory you could use Win32 API calls under Ruby 1.8 to get short 8.3 filepaths and pass that to the Ruby File methods.

Garry K

@tt_su said:

This is one of those areas where you probably would end up with code branching for the different ruby interpreters.

Then branching it is.


      mac_addr = []
      cmd = @@windows ? 'ipconfig /all' ; 'ifconfig'

      # choose lines that have only six pairs of 2 char hex values separated by either a ; or -
      regex = Regexp.compile('(..[;-]){5}..')

      if (RUBY_VERSION[0..2] == '1.8')
        lines = %x[#{cmd}].split("\n").grep(regex)
        lines.each { |line| mac_addr << (line.strip[-17, 17]).upcase().gsub(/-/, ';') }
      else
        temp_path = File.expand_path(ENV['TMPDIR'] || ENV['TMP'] || ENV['TEMP'])
        tempfile = File.join(temp_path, 'temp.txt')

        `#{cmd} > #{tempfile}`
        File.open(tempfile, 'r') do |file|
          lines = file.grep(regex)
          lines.each { |line| mac_addr << (line.strip[-17, 17]).upcase().gsub(/-/, ';') }
        end
        File.unlink(tempfile)
      end

Dan Rathbun

similar:
ipa = %x[ipconfig /all].split("\n").grep /\A\s*(Physical Address)/

The regular expression means:
\A start of line
\s* one or more space characters
and the parens group the string

returns:

[
  "   Physical Address. . . . . . . . . ; XX-XX-XX-ED-C2-XX",
  "   Physical Address. . . . . . . . . ; 00-XX-XX-ED-C2-XX",
  "   Physical Address. . . . . . . . . ; XX-XX-XX-E5-20-XX",
  "   Physical Address. . . . . . . . . ; 00-00-00-00-00-00-00-E0",
  "   Physical Address. . . . . . . . . ; 00-00-00-00-00-00-00-E0",
  "   Physical Address. . . . . . . . . ; 00-00-00-00-00-00-00-E0"
]

The first 2 are the Wireless:

Microsoft Virtual Miniport Adapter
the actual 802.11b/g/n Adaptor

The third is the Ethernet port.

The last 2 are virtual tunneling ports.

~

Dan Rathbun

DUh... I just stumbled upon GetMAC.exe on my Win 7 machine. (It is in the "%WINDIW%/System32" directory.)

Ironic given the title of the topic.

Win 7 comes with it installed.

It is installed on XP Pro, but other editions need to install the Resource Kit or Support Tools. (They are separate installers on the install CD.)

Documentation page: http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/getmac.mspx?mfr=true

Output looks like: %(#008080)[C:\Users\Dan>getmac]


Physical Address    Transport Name
=================== ==========================================================
XX-XX-XX-2B-E5-XX   \Device\Tcpip_{<a GUID is output here>}
XX-XX-XX-C2-1B-96   Media disconnected
XX-XX-XX-C2-1B-96   Media disconnected

Garry K

A fellow in Russian has been testing this and ends up with this error when running SU 2014.

Error: #<ArgumentError: invalid byte sequence in UTF-8>
The line of code that is fails on is

lines = file.grep(regex)

So the next thing we did was change the prior line to but had the same error.

File.open(tempfile, 'r', :encoding => 'iso-8859-1') do |file|

What is interesting and confusing is that when we ran this code from the web-console it worked


mac_addr = []
cmd = 'ipconfig /all'
regex = Regexp.compile('(..[;-]){5}..')

if (RUBY_VERSION[0..2] == '1.8')
  lines = %x[#{cmd}].split("\n").grep(regex)
  lines.each { |line| mac_addr << (line.strip[-17, 17]).upcase().gsub(/-/, ';') }
else
  temp_path = File.expand_path(ENV['TMPDIR'] || ENV['TMP'] || ENV['TEMP'])
  tempfile = File.join(temp_path, 'temp.txt')

  `#{cmd} > #{tempfile}`
  File.open(tempfile, 'r', ;encoding => 'iso-8859-1') do |file|
     lines = file.grep(regex)
     lines.each { |line| mac_addr << (line.strip[-17, 17]).upcase().gsub(/-/, ';') }
  end

  File.unlink(tempfile)
end

mac_addr[1]

Dan Rathbun

Encoding::default_internal has not been set correctly in the first release of SU2014.

SO try:
File.open(tempfile, 'r', :encoding => 'iso-8859-1:utf-8') do |file|

Garry K

My mistake this does work.
We got our versions crossed up.

File.open(tempfile, 'r', :encoding => 'iso-8859-1') do |file|

Thanks anyway Dan

Dan Rathbun

OH he is in Russia, so he's likely running a different codepage.

Get his default system Encoding:
Encoding::find("filesystem") >> an encoding
(On my machine it returns the #<Encoding:Windows-1252> object reference.)
or
Encoding::locale_charmap >> returns a name for the encoding.
(On my machine it returns the string "CP1252".)

Garry K

For me it just returns an error.
(eval):5:in `run': uninitialized constant JF::WebConsole::Encoding

Garry K

Sorry - I see this only works in SU 2014

Garry K

I've run into issues with taking the fist or second Mac Address out of ifconfig or ipconfig /all.

I've changed the code to look at the entire file and then to step through it line by line and treat it as a bit of a state machine.

Thanks to pgarmyn and Driven I think I've got some code that will work. They both helped with files as have a handful of other people.

With windows I've tested files in English, French, Russian and some with VMWare set up.
With OSX I've just tested in English.

Mac Address