141 lines
2.9 KiB
Ruby
141 lines
2.9 KiB
Ruby
module Rex
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###
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#
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# Text
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# ----
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#
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# This class formats text in various fashions and also provides
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# a mechanism for wrapping text at a given column.
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#
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###
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module Text
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DefaultWrap = 60
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#
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# Converts a raw string into a ruby buffer
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#
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def self.to_ruby(str, wrap = DefaultWrap)
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return hexify(str, wrap, '"', '" +', '', '"')
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end
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#
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# Creates a ruby-style comment
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#
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def self.to_ruby_comment(str, wrap = DefaultWrap)
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return wordwrap(str, 0, wrap, '', '# ')
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end
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#
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# Converts a raw string into a C buffer
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#
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def self.to_c(str, wrap = DefaultWrap, name = "buf")
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return hexify(str, wrap, '"', '"', "unsigned char #{name}[] = \n", '";')
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end
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#
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# Creates a c-style comment
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#
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def self.to_c_comment(str, wrap = DefaultWrap)
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return "/*\n" + wordwrap(str, 0, wrap, '', ' * ') + " */\n"
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end
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#
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# Converts a raw string into a perl buffer
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#
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def self.to_perl(str, wrap = DefaultWrap)
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return hexify(str, wrap, '"', '" .', '', '";')
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end
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#
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# Creates a perl-style comment
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#
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def self.to_perl_comment(str, wrap = DefaultWrap)
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return wordwrap(str, 0, wrap, '', '# ')
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end
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#
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# Returns the raw string
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#
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def self.to_raw(str)
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return str
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end
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#
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# Returns the hex version of the supplied string
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#
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def self.to_hex(str)
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return str.gsub(/./) { |s| puts sprintf("\\x%.2x", s[0]) }
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end
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#
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# Converts a hex string to a raw string
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#
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def self.hex_to_raw(str)
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[ str.downcase.gsub(/'/,'').gsub(/\\x([a-f0-9][a-f0-9])/, '\1') ].pack("H*")
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end
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#
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# Wraps text at a given column using a supplied indention
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#
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def self.wordwrap(str, indent = 0, col = DefaultWrap, append = '', prepend = '')
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return str.gsub(/.{1,#{col - indent}}(?:\s|\Z)/){
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( (" " * indent) + prepend + $& + append + 5.chr).gsub(/\n\005/,"\n").gsub(/\005/,"\n")}
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end
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#
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# Converts a string to a hex version with wrapping support
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#
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def self.hexify(str, col = DefaultWrap, line_start = '', line_end = '', buf_start = '', buf_end = '')
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output = buf_start
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cur = 0
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count = 0
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new_line = true
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# Go through each byte in the string
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str.each_byte { |byte|
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count += 1
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append = ''
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# If this is a new line, prepend with the
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# line start text
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if (new_line == true)
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append += line_start
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new_line = false
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end
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# Append the hexified version of the byte
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append += sprintf("\\x%.2x", byte)
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cur += append.length
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# If we're about to hit the column or have gone past it,
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# time to finish up this line
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if ((cur + line_end.length >= col) or
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(cur + buf_end.length >= col))
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new_line = true
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cur = 0
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# If this is the last byte, use the buf_end instead of
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# line_end
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if (count == str.length)
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append += buf_end + "\n"
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else
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append += line_end + "\n"
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end
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end
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output += append
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}
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# If we were in the middle of a line, finish the buffer at this point
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if (new_line == false)
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output += buf_end + "\n"
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end
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return output
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end
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end
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end
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