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https://github.com/donl/homebrew-cask-versions.git
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8ca2b12e92
* Similar to `:sudo`, gives the ability to run an external command within a given context. * Exposes `:bsexec` in DSL; not yet documented * Fixes #7132 (mount dmg image fails if user does not have StartupItemContext(8))
78 lines
2.5 KiB
Ruby
78 lines
2.5 KiB
Ruby
class Cask::Container::Dmg < Cask::Container::Base
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def self.me?(criteria)
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criteria.imageinfo != ''
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end
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attr_reader :mounts
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def initialize(*args)
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super(*args)
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@mounts = []
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end
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def extract
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mount!
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assert_mounts_found
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@mounts.each do |mount|
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@command.run('/usr/bin/ditto',
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# todo
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# per https://github.com/caskroom/homebrew-cask/issues/6382, ditto
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# complains to stderr about unreadable .Trashes directories, so all
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# stderr output is silenced for now. But better solutions would be
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# - use the --bom option to ditto to selectively avoid certain files
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# - .Trashes
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# - symlinks to Applications
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# - or support some type of text filter to be passed to
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# :print_stderr instead of true/false
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:print_stderr => false,
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:args => ['--', mount, @cask.staged_path])
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end
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ensure
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eject!
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end
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def mount!
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plist = @command.run('/usr/bin/hdiutil',
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# :startup may not be the minimum necessary privileges
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:bsexec => :startup,
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# realpath is a failsafe against unusual filenames
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:args => %w[mount -plist -nobrowse -readonly -noidme -mountrandom /tmp] + [Pathname.new(@path).realpath],
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:input => %w[y]
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).plist
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@mounts = mounts_from_plist(plist)
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end
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def mounts_from_plist(plist)
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return [] unless plist.respond_to?(:fetch)
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plist.fetch('system-entities', []).map do |entity|
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entity['mount-point']
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end.compact
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end
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def assert_mounts_found
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if @mounts.empty?
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raise CaskError.new %Q{No mounts found in '#{@path}'; perhaps it is a bad DMG?}
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end
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end
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def eject!
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@mounts.each do |mount|
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# realpath is a failsafe against unusual filenames
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mountpath = Pathname.new(mount).realpath
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next unless mountpath.exist?
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@command.run('/usr/sbin/diskutil',
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# :startup may not be the minimum necessary privileges
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:bsexec => :startup,
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:args => ['eject', mountpath],
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:print_stderr => false)
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next unless mountpath.exist?
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sleep 1
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@command.run('/usr/sbin/diskutil',
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# :startup may not be the minimum necessary privileges
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:bsexec => :startup,
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:args => ['eject', mountpath],
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:print_stderr => false)
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next unless mountpath.exist?
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raise CaskError.new "Failed to eject #{mountpath}"
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end
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end
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end
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