90 lines
3.6 KiB
Ruby
Executable file
90 lines
3.6 KiB
Ruby
Executable file
# adapted from feedvalidator, original copyright license is
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#
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# Copyright (c) 2002-2006, Sam Ruby, Mark Pilgrim, Joseph Walton, and Phil Ringnalda
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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 all
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# 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 THE
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# SOFTWARE.
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iana_schemes = [ # http://www.iana.org/assignments/uri-schemes.html
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"ftp", "http", "gopher", "mailto", "news", "nntp", "telnet", "wais",
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"file", "prospero", "z39.50s", "z39.50r", "cid", "mid", "vemmi",
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"service", "imap", "nfs", "acap", "rtsp", "tip", "pop", "data", "dav",
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"opaquelocktoken", "sip", "sips", "tel", "fax", "modem", "ldap",
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"https", "soap.beep", "soap.beeps", "xmlrpc.beep", "xmlrpc.beeps",
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"urn", "go", "h323", "ipp", "tftp", "mupdate", "pres", "im", "mtqp",
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"iris.beep", "dict", "snmp", "crid", "tag", "dns", "info"
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]
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ALLOWED_SCHEMES = iana_schemes + ['javascript']
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RFC2396 = Regexp.new("^([a-zA-Z][0-9a-zA-Z+\\-\\.]*:)?/{0,2}[0-9a-zA-Z;/?:@&=+$\\.\\-_!~*'()%,#]*$", Regexp::MULTILINE)
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rfc2396_full = Regexp.new("[a-zA-Z][0-9a-zA-Z+\\-\\.]*:(//)?[0-9a-zA-Z;/?:@&=+$\\.\\-_!~*'()%,#]+$")
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URN = Regexp.new("^[Uu][Rr][Nn]:[a-zA-Z0-9][a-zA-Z0-9-]{1,31}:([a-zA-Z0-9()+,\.:=@;$_!*'\-]|%[0-9A-Fa-f]{2})+$")
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TAG = Regexp.new("^tag:([a-z0-9\\-\._]+?@)?[a-z0-9\.\-]+?,\d{4}(-\d{2}(-\d{2})?)?:[0-9a-zA-Z;/\?:@&=+$\.\-_!~*'\(\)%,]*(#[0-9a-zA-Z;/\?:@&=+$\.\-_!~*'\(\)%,]*)?$")
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def is_valid_uri(value, uri_pattern = RFC2396)
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scheme = value.split(':').first
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scheme.downcase! if scheme
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if scheme == 'tag'
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if !TAG.match(value)
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return false, "invalid-tag-uri"
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end
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elsif scheme == "urn"
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if !URN.match(value)
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return false, "invalid-urn"
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end
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elsif uri_pattern.match(value).to_a.reject{|i| i == ''}.compact.length == 0 || uri_pattern.match(value)[0] != value
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urichars = Regexp.new("^[0-9a-zA-Z;/?:@&=+$\\.\\-_!~*'()%,#]$", Regexp::MULTILINE)
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if value.length > 0
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value.each_byte do |b|
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if b < 128 and !urichars.match([b].pack('c*'))
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return false, "invalid-uri-char"
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end
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end
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else
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begin
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if uri_pattern.match(value.encode('idna'))
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return false, "uri-not-iri"
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end
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rescue
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end
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return false, "invalid-uri"
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end
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elsif ['http','ftp'].include?(scheme)
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if !value.match(%r{^\w+://[^/].*})
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return false, "invalid-http-or-ftp-uri"
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end
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elsif value.index(':') && scheme.match(/^[a-z]+$/) && !ALLOWED_SCHEMES.include?(scheme)
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return false, "invalid-scheme"
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end
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return true, ""
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end
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def is_valid_iri(value)
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begin
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if value.length > 0
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value = value.encode('idna')
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end
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rescue
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end
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is_valid_uri(value)
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end
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def is_valid_fully_qualified_uri(value)
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is_valid_uri(value, rfc2396_full)
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end
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