how to get mac address, gem uuidtools 1.0.2 not working
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Key: JRUBY-1857
URL: http://jira.codehaus.org/browse/JRUBY-1857
Project: JRuby
Issue Type: Bug
Affects Versions: JRuby 1.1
Environment: MacOS X 10.4.11, JRuby trunk r5456, Java 1.5.0_13
Reporter: Stephen Bannasch
Assignee: Thomas E Enebo
Fix For: JRuby 1.1
The gen uuidtools produces uuids of various types and one of the inputs is the
local computer's MAC address.
Using this gem produces an error
{code}
irb(main):001:0> require 'uuidtools'
=> true
irb(main):002:0> UUID.timestamp_create().to_s
ifconfig: interface 2>&1 does not exist
usage: ifconfig [-L] interface address_family [address [dest_address]]
[parameters]
ifconfig interface create
ifconfig -a [-L] [-d] [-m] [-u] [address_family]
ifconfig -l [-d] [-u] [address_family]
ifconfig [-L] [-d] [-m] [-u]
ifconfig: interface | does not exist
StandardError: MAC address could not be autodetected. Set the MAC address
manually.
from
/Users/stephen/dev/jruby_trunk/jruby/lib/ruby/gems/1.8/gems/uuidtools-1.0.2/lib/uuidtools.rb:238:in
`timestamp_create'
from
/Users/stephen/dev/jruby_trunk/jruby/lib/ruby/gems/1.8/gems/uuidtools-1.0.2/lib/uuidtools.rb:226:in
`synchronize'
from
/Users/stephen/dev/jruby_trunk/jruby/lib/ruby/gems/1.8/gems/uuidtools-1.0.2/lib/uuidtools.rb:226:in
`timestamp_create'
from
/Users/stephen/dev/jruby_trunk/jruby/lib/ruby/gems/1.8/gems/uuidtools-1.0.2/lib/uuidtools.rb:226:in
`signal_status'
irb(main):003:0> RUBY_PLATFORM
=> "java"
{code}
The gem itself uses a platform-dependent call to ifconfig to determine the MAC
address. Currently the gem does not check for:
{code}
RUBY_PLATFORM == "java"
{code}
What mechanism can be used from JRuby to get the MAC address?
UUIDTools home page: http://sporkmonger.com/projects/uuidtools
See [JRUBY-1676] and [JRUBY-1557] for descriptions of problems passing
parameters to shell commands like ifconfig.
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