55 lines
1.2 KiB
Ruby
55 lines
1.2 KiB
Ruby
#!/usr/bin/env ruby
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# This file is part of Metasm, the Ruby assembly manipulation suite
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# Copyright (C) 2006-2009 Yoann GUILLOT
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#
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# Licence is LGPL, see LICENCE in the top-level directory
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#
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# this script scans directories recursively for ELF files which have a PT_GNU_STACK rwe or absent
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# usage : scan_pt_gnu_stack.rb <dir> [<dir>]
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#
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require 'metasm'
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def _puts(a)
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puts a.to_s.ljust(60)
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end
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def _printadv(a)
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$stderr.print a.to_s.ljust(60)[-60, 60] + "\r"
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end
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# the recursive scanning procedure
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iter = lambda { |f|
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if File.symlink? f
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elsif File.directory? f
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# show where we are & recurse
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_printadv f
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Dir[ File.join(f, '*') ].each { |ff|
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iter[ff]
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}
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else
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# interpret any file as a ELF
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begin
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elf = Metasm::ELF.decode_file_header(f)
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next if not elf.segments or elf.header.type == 'REL'
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seg = elf.segments.find { |seg_| seg_.type == 'GNU_STACK' }
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if not seg
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_puts "PT_GNU_STACK absent : #{f}"
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elsif seg.flags.include? 'X'
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_puts "PT_GNU_STACK RWE : #{f}"
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else
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_puts "#{f} : #{seg.inspect}" if $VERBOSE
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end
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rescue
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# the file is not a valid ELF
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_puts "E: #{f} #{$!}" if $VERBOSE
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end
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end
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}
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# go
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ARGV.each { |dir| iter[dir] }
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_printadv ''
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