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Edit File: mailto.rb
# frozen_string_literal: false # = uri/mailto.rb # # Author:: Akira Yamada <akira@ruby-lang.org> # License:: You can redistribute it and/or modify it under the same term as Ruby. # Revision:: $Id: mailto.rb 57066 2016-12-12 15:24:28Z naruse $ # # See URI for general documentation # require 'uri/generic' module URI # # RFC6068, The mailto URL scheme # class MailTo < Generic include REGEXP # A Default port of nil for URI::MailTo DEFAULT_PORT = nil # An Array of the available components for URI::MailTo COMPONENT = [ :scheme, :to, :headers ].freeze # :stopdoc: # "hname" and "hvalue" are encodings of an RFC 822 header name and # value, respectively. As with "to", all URL reserved characters must # be encoded. # # "#mailbox" is as specified in RFC 822 [RFC822]. This means that it # consists of zero or more comma-separated mail addresses, possibly # including "phrase" and "comment" components. Note that all URL # reserved characters in "to" must be encoded: in particular, # parentheses, commas, and the percent sign ("%"), which commonly occur # in the "mailbox" syntax. # # Within mailto URLs, the characters "?", "=", "&" are reserved. # ; RFC 6068 # hfields = "?" hfield *( "&" hfield ) # hfield = hfname "=" hfvalue # hfname = *qchar # hfvalue = *qchar # qchar = unreserved / pct-encoded / some-delims # some-delims = "!" / "$" / "'" / "(" / ")" / "*" # / "+" / "," / ";" / ":" / "@" # # ; RFC3986 # unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~" # pct-encoded = "%" HEXDIG HEXDIG HEADER_REGEXP = /\A(?<hfield>(?:%\h\h|[!$'-.0-;@-Z_a-z~])*=(?:%\h\h|[!$'-.0-;@-Z_a-z~])*)(?:&\g<hfield>)*\z/ # practical regexp for email address # http://www.whatwg.org/specs/web-apps/current-work/multipage/states-of-the-type-attribute.html#valid-e-mail-address EMAIL_REGEXP = /\A[a-zA-Z0-9.!\#$%&'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*\z/ # :startdoc: # # == Description # # Creates a new URI::MailTo object from components, with syntax checking. # # Components can be provided as an Array or Hash. If an Array is used, # the components must be supplied as [to, headers]. # # If a Hash is used, the keys are the component names preceded by colons. # # The headers can be supplied as a pre-encoded string, such as # "subject=subscribe&cc=address", or as an Array of Arrays like # [['subject', 'subscribe'], ['cc', 'address']] # # Examples: # # require 'uri' # # m1 = URI::MailTo.build(['joe@example.com', 'subject=Ruby']) # puts m1.to_s -> mailto:joe@example.com?subject=Ruby # # m2 = URI::MailTo.build(['john@example.com', [['Subject', 'Ruby'], ['Cc', 'jack@example.com']]]) # puts m2.to_s -> mailto:john@example.com?Subject=Ruby&Cc=jack@example.com # # m3 = URI::MailTo.build({:to => 'listman@example.com', :headers => [['subject', 'subscribe']]}) # puts m3.to_s -> mailto:listman@example.com?subject=subscribe # def self.build(args) tmp = Util.make_components_hash(self, args) case tmp[:to] when Array tmp[:opaque] = tmp[:to].join(',') when String tmp[:opaque] = tmp[:to].dup else tmp[:opaque] = '' end if tmp[:headers] query = case tmp[:headers] when Array tmp[:headers].collect { |x| if x.kind_of?(Array) x[0] + '=' + x[1..-1].join else x.to_s end }.join('&') when Hash tmp[:headers].collect { |h,v| h + '=' + v }.join('&') else tmp[:headers].to_s end unless query.empty? tmp[:opaque] << '?' << query end end super(tmp) end # # == Description # # Creates a new URI::MailTo object from generic URL components with # no syntax checking. # # This method is usually called from URI::parse, which checks # the validity of each component. # def initialize(*arg) super(*arg) @to = nil @headers = [] # The RFC3986 parser does not normally populate opaque @opaque = "?#{@query}" if @query && !@opaque unless @opaque raise InvalidComponentError, "missing opaque part for mailto URL" end to, header = @opaque.split('?', 2) # allow semicolon as a addr-spec separator # http://support.microsoft.com/kb/820868 unless /\A(?:[^@,;]+@[^@,;]+(?:\z|[,;]))*\z/ =~ to raise InvalidComponentError, "unrecognised opaque part for mailtoURL: #{@opaque}" end if arg[10] # arg_check self.to = to self.headers = header else set_to(to) set_headers(header) end end # The primary e-mail address of the URL, as a String attr_reader :to # E-mail headers set by the URL, as an Array of Arrays attr_reader :headers # check the to +v+ component def check_to(v) return true unless v return true if v.size == 0 v.split(/[,;]/).each do |addr| # check url safety as path-rootless if /\A(?:%\h\h|[!$&-.0-;=@-Z_a-z~])*\z/ !~ addr raise InvalidComponentError, "an address in 'to' is invalid as URI #{addr.dump}" end # check addr-spec # don't s/\+/ /g addr.gsub!(/%\h\h/, URI::TBLDECWWWCOMP_) if EMAIL_REGEXP !~ addr raise InvalidComponentError, "an address in 'to' is invalid as uri-escaped addr-spec #{addr.dump}" end end true end private :check_to # private setter for to +v+ def set_to(v) @to = v end protected :set_to # setter for to +v+ def to=(v) check_to(v) set_to(v) v end # check the headers +v+ component against either # * HEADER_REGEXP def check_headers(v) return true unless v return true if v.size == 0 if HEADER_REGEXP !~ v raise InvalidComponentError, "bad component(expected opaque component): #{v}" end true end private :check_headers # private setter for headers +v+ def set_headers(v) @headers = [] if v v.split('&').each do |x| @headers << x.split(/=/, 2) end end end protected :set_headers # setter for headers +v+ def headers=(v) check_headers(v) set_headers(v) v end # Constructs String from URI def to_s @scheme + ':' + if @to @to else '' end + if @headers.size > 0 '?' + @headers.collect{|x| x.join('=')}.join('&') else '' end + if @fragment '#' + @fragment else '' end end # Returns the RFC822 e-mail text equivalent of the URL, as a String. # # Example: # # require 'uri' # # uri = URI.parse("mailto:ruby-list@ruby-lang.org?Subject=subscribe&cc=myaddr") # uri.to_mailtext # # => "To: ruby-list@ruby-lang.org\nSubject: subscribe\nCc: myaddr\n\n\n" # def to_mailtext to = URI.decode_www_form_component(@to) head = '' body = '' @headers.each do |x| case x[0] when 'body' body = URI.decode_www_form_component(x[1]) when 'to' to << ', ' + URI.decode_www_form_component(x[1]) else head << URI.decode_www_form_component(x[0]).capitalize + ': ' + URI.decode_www_form_component(x[1]) + "\n" end end "To: #{to} #{head} #{body} " end alias to_rfc822text to_mailtext end @@schemes['MAILTO'] = MailTo end