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47 lines
1.4 KiB
CoffeeScript
47 lines
1.4 KiB
CoffeeScript
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# This file is shared between the frontend and server code of web, so that
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# filename validation is the same in both implementations.
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# Both copies must be kept in sync:
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# app/coffee/Features/Project/SafePath.coffee
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# public/coffee/ide/directives/SafePath.coffee
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load = () ->
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BADCHAR_RX = ///
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[
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\/ # no slashes
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\* # no asterisk
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\u0000-\u001F # no control characters (0-31)
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\u007F # no delete
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\u0080-\u009F # no unicode control characters (C1)
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\uD800-\uDFFF # no unicode surrogate characters
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]
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///g
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BADFILE_RX = ///
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(^\.$) # reject . as a filename
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| (^\.\.$) # reject .. as a filename
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| (^\s+) # reject leading space
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| (\s+$) # reject trailing space
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///g
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MAX_PATH = 1024 # Maximum path length, in characters. This is fairly arbitrary.
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SafePath =
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clean: (filename) ->
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filename = filename.replace BADCHAR_RX, '_'
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# for BADFILE_RX replace any matches with an equal number of underscores
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filename = filename.replace BADFILE_RX, (match) ->
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return new Array(match.length + 1).join("_")
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return filename
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isCleanFilename: (filename) ->
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return SafePath.isAllowedLength(filename) &&
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not filename.match(BADCHAR_RX) &&
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not filename.match(BADFILE_RX)
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isAllowedLength: (pathname) ->
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return pathname.length > 0 && pathname.length <= MAX_PATH
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if define?
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define [], load
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else
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module.exports = load()
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