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|
=begin
= net/pop.rb
written by Minero Aoki <aamine@dp.u-netsurf.ne.jp>
This library is distributed under the terms of the Ruby license.
You can freely distribute/modify this library.
=end
require 'net/session'
require 'md5'
module Net
=begin
== Net::POP3
=== Super Class
Net::Protocol
=== Class Methods
: new( address = 'localhost', port = 110 )
This method create a new POP3 object.
This will not open connection yet.
=== Methods
: start( account, password )
This method start POP3.
: each{|popmail| ...}
This method is equals to "pop3.mails.each"
: mails
This method returns an array of ((URL:#POPMail)).
This array is renewed when login.
=end
class POP3 < Protocol
protocol_param :port, '110'
protocol_param :command_type, '::Net::POP3Command'
protocol_param :mail_type, '::Net::POPMail'
def initialize( addr = nil, port = nil )
super
@mails = [].freeze
end
attr :mails
def each
@mails.each {|m| yield m }
end
private
def do_start( acnt, pwd )
@command.auth( acnt, pwd )
t = self.type.mail_type
@mails = []
@command.list.each_with_index do |size,idx|
if size then
@mails.push t.new( idx, size, @command )
end
end
@mails.freeze
end
end
POP = POP3
POPSession = POP3
POP3Session = POP3
=begin
== Net::POPMail
A class of mail which exists on POP server.
=== Super Class
Object
=== Method
: all
: pop
: mail
This method fetches a mail and return it.
: header
This method fetches only mail header.
: top( lines )
This method fetches mail header and 'lines' lines body.
: delete
: delete!
This method deletes mail.
: size
size of mail(bytes)
: deleted?
true if mail was deleted
=end
class POPMail
def initialize( n, s, cmd )
@num = n
@size = s
@command = cmd
@deleted = false
end
attr :size
def all( dest = '' )
@command.retr( @num, dest )
end
alias pop all
alias mail all
def top( lines, dest = '' )
@command.top( @num, lines, dest )
end
def header( dest = '' )
top( 0, dest )
end
def delete
@command.dele( @num )
@deleted = true
end
alias delete! delete
def deleted?
@deleted
end
def uidl
@command.uidl @num
end
end
=begin
== Net::APOP
This class has no new methods. Only way of authetication is changed.
=== Super Class
Net::POP3
=end
class APOP < POP3
protocol_param :command_type, 'Net::APOPCommand'
end
APOPSession = APOP
=begin
== Net::POP3Command
POP3 command class.
=== Super Class
Net::Command
=== Class Methods
: new( socket )
This method creates new POP3Command object. 'socket' must be ProtocolSocket.
=== Methods
: auth( account, password )
This method do POP authorization (no RPOP)
In case of failed authorization, raises Protocol::ProtocolError exception.
: list
a list of mails which existing on server.
The list is an array like "array[ number ] = size".
ex:
The list from server is
1 2452
2 3355
4 9842
:
then, an array is
[ nil, 2452, 3355, nil, 9842, ... ]
: quit
This method ends POP using 'QUIT' commmand.
: rset
This method reset all changes done in current session,
by sending 'RSET' command.
: top( num, lines = 0 )
This method gets all mail header and 'lines' lines body
by sending 'TOP' command. 'num' is mail number.
WARNING: the TOP command is 'Optional' in RFC1939 (POP3)
: retr( num : Integer )
This method gets a mail by 'RETR' command. 'num' is mail number.
: dele( num : Integer )
This method deletes a mail on server by 'DELE'.
=end
class POP3Command < Command
def initialize( sock )
super
check_reply SuccessCode
end
def auth( acnt, pass )
@socket.writeline 'USER ' + acnt
check_reply_auth
@socket.writeline( 'PASS ' + pass )
ret = check_reply_auth
return ret
end
def list
getok 'LIST'
arr = []
@socket.read_pendlist do |line|
num, siz = line.split( / +/o )
arr[ num.to_i ] = siz.to_i
end
return arr
end
def rset
getok 'RSET'
end
def top( num, lines = 0, dest = '' )
getok sprintf( 'TOP %d %d', num, lines )
@socket.read_pendstr( dest )
end
def retr( num, dest = '', &block )
getok sprintf( 'RETR %d', num )
@socket.read_pendstr( dest, &block )
end
def dele( num )
getok sprintf( 'DELE %d', num )
end
def uidl( num )
rep = getok( sprintf 'UIDL %d', num )
uid = rep.msg.split(' ')[1]
uid
end
private
def do_quit
getok 'QUIT'
end
def check_reply_auth
begin
cod = check_reply( SuccessCode )
rescue ProtocolError
raise ProtoAuthError, 'Fail to POP authentication'
end
return cod
end
def get_reply
str = @socket.readline
if /\A\+/ === str then
return SuccessCode.new( str[0,3], str[3, str.size - 3].strip )
else
return ErrorCode.new( str[0,4], str[4, str.size - 4].strip )
end
end
end
=begin
== APOPCommand
=== Super Class
POP3Command
=== Methods
: auth( account, password )
This method do authorization by sending 'APOP' command.
If server is not APOP server, this raises Net::ProtoAuthError exception.
On other errors, raises Net::ProtocolError.
=end
class APOPCommand < POP3Command
def initialize( sock )
rep = super( sock )
/<[^@]+@[^@>]+>/o === rep.msg
@stamp = $&
unless @stamp then
raise ProtoAuthError, "This is not APOP server: can't login"
end
end
def auth( acnt, pass )
@socket.writeline( "APOP #{acnt} #{digest(@stamp + pass)}" )
return check_reply_auth
end
def digest( str )
temp = MD5.new( str ).digest
ret = ''
temp.each_byte do |i|
ret << sprintf( '%02x', i )
end
return ret
end
end
end
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