2f97336b7f
git-svn-id: https://beef.googlecode.com/svn/trunk@725 b87d56ec-f9c0-11de-8c8a-61c5e9addfc9
96 lines
2.6 KiB
Ruby
96 lines
2.6 KiB
Ruby
module BeEF
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module Filter
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# check if the string is not empty and not nil
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def self.is_non_empty_string?(str)
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return false if str.nil?
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return false if not str.is_a? String
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return false if str.empty?
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true
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end
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# check if only the characters in 'chars' are in 'str'
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def self.only?(chars, str)
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regex = Regexp.new('[^' + chars + ']')
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regex.match(str).nil?
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end
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# check if one or more characters in 'chars' are in 'str'
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def self.exists?(chars, str)
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regex = Regexp.new(chars)
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not regex.match(str).nil?
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end
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# check for null char
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def self.has_null? (str)
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return false if not is_non_empty_string?(str)
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exists?('\x00', str)
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end
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# check for non-printalbe char
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def self.has_non_printable_char?(str)
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return false if not is_non_empty_string?(str)
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not only?('[:print:]', str)
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end
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# check if num chars only
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def self.nums_only?(str)
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return false if not is_non_empty_string?(str)
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only?('0-9', str)
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end
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# check if valid float
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def self.is_valid_float?(str)
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return false if not is_non_empty_string?(str)
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return false if not only?('0-9\.', str)
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not (str =~ /^[\d]+\.[\d]+$/).nil?
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end
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# check if hex chars only
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def self.hexs_only?(str)
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return false if not is_non_empty_string?(str)
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only?('0123456789ABCDEFabcdef', str)
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end
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# check if first char is a num
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def self.first_char_is_num?(str)
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return false if not is_non_empty_string?(str)
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not (str =~ /^\d.*/).nil?
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end
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# check for space chars: \t\n\r\f
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def self.has_whitespace_char?(str)
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return false if not is_non_empty_string?(str)
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exists?('\s', str)
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end
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# check for non word chars: a-zA-Z0-9
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def self.alphanums_only?(str)
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return false if not is_non_empty_string?(str)
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only?("a-zA-Z0-9", str)
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end
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# check if valid ip address string
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def self.is_valid_ip?(ip)
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return true if ip =~ /^(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})?$/
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false
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end
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# check for valid browser details chars
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def self.has_valid_browser_details_chars?(str)
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return false if not is_non_empty_string?(str)
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not (str =~ /[^\w\d\s()-.,;:_\/!\302\256]/).nil? # \302\256 is the (r) character
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end
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# check for valid base details chars
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# this is for basic flitering where possible all specific filters must be implemented
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def self.has_valid_base_chars?(str)
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return false if not is_non_empty_string?(str)
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(str =~ /[^\302\256[:print:]]/).nil? # \302\256 is the (r) character
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end
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end
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end
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