133 lines
3.6 KiB
CoffeeScript
133 lines
3.6 KiB
CoffeeScript
###
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# Copyright 2013 Fanoos Telecom
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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###
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# Credit to Netanel Rubin from Check Point Software Technologies for discovering
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# vulnerability caused by use of eval to generate regex from user input.
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common = require './common'
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parameters = require './parameters'
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stringToRegexp = (input, flags) ->
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if (input.indexOf('*') == -1)
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return false
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output = input.replace(/[\[\]\\\^\$\.\|\?\+\(\)]/, "\\$&")
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if output[0] == '*'
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output = output.replace(/^\*+/g, '')
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else
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output = '^' + output
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if output[output.length - 1] == '*'
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output = output.replace(/\*+$/g, '')
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else
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output = output + '$'
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output = output.replace(/[\*]/, '.*')
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return new RegExp(output, flags)
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normalizers = {}
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normalizers.default = (input, normType) ->
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if normType is 'query' and common.typeOf(input) is common.STRING_TYPE
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vals = []
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str = normalizers.string(input, normType)
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if common.typeOf(str) == common.ARRAY_TYPE
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vals = vals.concat(str)
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else
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vals.push(str)
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f = parseFloat(input)
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if not isNaN(f)
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vals.push(f)
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d = new Date(input)
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if input.length >= 8 and d.getFullYear() > 1983
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vals.push(d)
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r = stringToRegexp(input)
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if r isnt false
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vals.push({'$regex' : r})
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return vals
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return input
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FLOAT_REGEX = /^([\-\+]?[0-9\.]+)/
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normalizers.float = (input, normType) ->
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res = FLOAT_REGEX.exec(input)
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if res != null
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parseFloat(res[1])
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else
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null
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normalizers.date = (input, normType) ->
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return new Date(input)
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normalizers.string = (input, normType) ->
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if normType is 'query'
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if (m = /^\/(.*?)\/(g?i?m?y?)$/.exec(input))
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return [{'$regex' : new RegExp(m[1], m[2])}, input]
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return input
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colonizeMac = (input) ->
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if (i = input.indexOf(':')) != -1
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i = if (i % 2) == 0 then 0 else 1
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while i < input.length
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if input[i-1] != ':' and input[i-2] != ':'
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if input[i] != ':' and i != 0
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input = input.substring(0, i) + ':' + input.substring(i)
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++i
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++i
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++ i
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return input
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else
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return input.replace(/[0-9A-F]{1}(?!$)/g, '$&:?')
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normalizers.mac = (input, normType) ->
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if normType isnt 'query'
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return input
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input = input.trim().toUpperCase().replace(/[^0-9A-F\*\-\:]/g, '').replace(/[\-\:]/g, ':')
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if input.indexOf('*') != -1
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input = (colonizeMac(a) for a in input.split('*')).join('*')
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return stringToRegexp(input, 'i')
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input = colonizeMac(input)
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if input.length == 17
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return [input, input.toLowerCase()]
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return {'$regex' : new RegExp(input, 'i')}
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exports.normalize = (path, value, normType) ->
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type = parameters.getType(path) ? 'default'
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normalizers[type](value, normType)
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