Firmware Updates Redux

Mac firmware updates generally need some sort of user intervention in order to apply them.

This makes it very difficult to automate the process. I did manage at one point to automate SMC updates, but EFI updates and other hardware (keyboards, trackpads, graphics) each have their own issues.

So I finally decided to just punt on the issue. Here’s what I do now: a script runs at login and checks softwareupdate, looking for available firmware updates. If there are any, the user is notified to call the help desk.

The script follows.

#!/usr/bin/perl -w

use strict;

# change 'com.myorg' to your organization name
my $prefs = "com.myorg.firmwareupdatecheck";

# check the last time we ran on this machine; 
# exit if we already ran today so we don't annoy too much
my $now = time;
my $lastChecked = 
   `defaults -currentHost read $prefs lastChecked 2>/dev/null`;
chomp $lastChecked;
if ($lastChecked ne "") {
  my $daysSinceLastChecked = 
     int(($now-$lastChecked)/(60*60*24));
  exit if ($daysSinceLastChecked < 1);
}

# get list of available updates from softwareupdate
my $allupdates = `softwareupdate -l | grep '^   \\* '`;
chomp $allupdates;
my @updates = split /\n/, $allupdates;
my $firmwareupdates = "";
my $firmwarelist = "";
my $otherupdates = "";

# walk through the list looking for firmware updates
for my $update (@updates) {
  $update = substr($update,5);
  if ((     $update =~ /[F|f]irmware/) 
        || ($update =~ /EFI/) 
        || ($update =~ /SMC/)) {
    $firmwareupdates .= "$update ";
    $firmwarelist .= "   $update\n";
  } else {
    $otherupdates .= "$update ";
  }
}

# record when we checked and what we found
system "defaults -currentHost write $prefs lastChecked -int $now";
system "defaults -currentHost write $prefs availableUpdates '$firmwareupdates'";

if ($firmwareupdates) {
  # there are available firmware updates
  if ($otherupdates) {
    # hide the non-firmware updates since I don't want users tempted to install them
    system "softwareupdate --ignore $otherupdates >/dev/null 2>&1";
  }
  
  # are we running under an admin account?
  my $checkAdmin = `dseditgroup -o checkmember admin`;
  if ($checkAdmin =~ /^yes/) {
     # user is an admin, prompt them to install
           my $result = `osascript<<EOFA
try
  tell application "System Events"
    activate
    display alert "Firmware updates available" message "There are firmware updates available for this Mac:" & return & "$firmwarelist" as warning buttons {"Later", "Install"} default button "Install" cancel button "Later" giving up after 120
  end tell
  if button returned of the result is "Install" then
    do shell script "open '/System/Library/CoreServices/Software Update.app'"
  end if
end try
EOFA`;

  } else {
    # user is not an admin, tell them to call help desk
    my $result = `osascript<<EOFB
try
  tell application "System Events"
    activate
    display alert "Firmware updates available" message "There are firmware updates available for this Mac:" & return & "$firmwarelist" & return & "Please call Tech Support at 555-1212 for help in installing these updates." as warning buttons {"OK"} default button "OK" cancel button "OK" giving up after 120
  end tell
end try
EOFB`;
  }
}

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