#!/usr/bin/env ruby<\/span>\n#<\/span>\n# unknown source :(<\/span>\n\nrequire<\/span> 'socket'<\/span>\n\nDEBUG<\/span> =<\/span> false<\/span>\n\ndef<\/span> data<\/span>(<\/span>sock<\/span>)<\/span>\n s<\/span> =<\/span> ""<\/span>\n\n sock<\/span>.<\/span>print<\/span> "354 End data with <CR><LF>.<CR><LF><\/span>\\r\\n<\/span>"<\/span>\n while<\/span>(<\/span>line<\/span> =<\/span> sock<\/span>.<\/span>gets<\/span>)<\/span>\n puts<\/span> line<\/span> if<\/span> DEBUG<\/span>\n break<\/span> if<\/span> line<\/span> =~<\/span> /^\\.\\r?\\n?$/<\/span>\n s<\/span> +=<\/span> line<\/span>\n end<\/span>\n s<\/span>\nend<\/span>\n\ndef<\/span> session<\/span>(<\/span>sock<\/span>)<\/span>\n sock<\/span>.<\/span>print<\/span> "220 localhost SMTP mockmail<\/span>\\r\\n<\/span>"<\/span>\n from<\/span> =<\/span> nil<\/span>\n to<\/span> =<\/span> []<\/span>\n body<\/span> =<\/span> nil<\/span>\n while<\/span>(<\/span>line<\/span> =<\/span> sock<\/span>.<\/span>gets<\/span>)<\/span>\n line<\/span>.<\/span>chomp!<\/span>\n puts<\/span> line<\/span> if<\/span> DEBUG<\/span>\n sock<\/span>.<\/span>print<\/span> case<\/span> line<\/span>\n when<\/span> /HELO/<\/span>:<\/span> "250 localhost<\/span>\\r\\n<\/span>"<\/span>\n when<\/span> /RSET/<\/span>:<\/span> "250 Ok<\/span>\\r\\n<\/span>"<\/span>\n when<\/span> /VRFY/<\/span>:<\/span><\/span>\n /VRFY [^\\s]/<\/span> =~<\/span> line<\/span>\n "252 <\/span>#{<\/span>$1<\/span>}<\/span>\\r\\n<\/span>"<\/span>\n when<\/span> /MAIL FROM/<\/span>:<\/span><\/span>\n /MAIL FROM:\\s*\\<?([^\\s<>]+)\\>?/<\/span> =~<\/span> line<\/span>\n from<\/span> =<\/span> $1<\/span>\n puts<\/span> from<\/span> if<\/span> DEBUG<\/span>\n "250 Ok<\/span>\\r\\n<\/span>"<\/span>\n when<\/span> /RCPT TO/<\/span>:<\/span><\/span>\n /RCPT TO:\\s*\\<?([^\\s\\r\\n\\t\\f<>]+)\\>?/<\/span> =~<\/span> line<\/span>\n to<\/span> <<<\/span> $1<\/span>\n puts<\/span> to<\/span> if<\/span> DEBUG<\/span>\n "250 Ok<\/span>\\r\\n<\/span>"<\/span>\n when<\/span> /DATA/<\/span>:<\/span>\n body<\/span> =<\/span> data<\/span>(<\/span>sock<\/span>)<\/span>\n "250 Ok<\/span>\\r\\n<\/span>"<\/span>\n when<\/span> /QUIT/<\/span>:<\/span>\n sock<\/span>.<\/span>print<\/span> "221 Bye<\/span>\\r\\n<\/span>"<\/span>\n break<\/span>\n else<\/span> "500 Err<\/span>\\r\\n<\/span>"<\/span>\n end<\/span>\n end<\/span>\n puts<\/span> "from: <\/span>#{<\/span>from<\/span>}<\/span>"<\/span>\n puts<\/span> "to: <\/span>#{<\/span>to<\/span>.<\/span>join<\/span> '; '<\/span>}<\/span>"<\/span>\n puts<\/span> "---"<\/span>\n puts<\/span> body<\/span>\n puts<\/span> "==="<\/span>\n open<\/span>(<\/span>"mockmail.txt"<\/span>,<\/span> "a"<\/span>)<\/span> {<\/span> |<\/span>f<\/span>|<\/span>\n f<\/span>.<\/span>puts<\/span> "from: <\/span>#{<\/span>from<\/span>}<\/span>"<\/span>\n f<\/span>.<\/span>puts<\/span> "to: <\/span>#{<\/span>to<\/span>.<\/span>join<\/span> '; '<\/span>}<\/span>"<\/span>\n f<\/span>.<\/span>puts<\/span> "---"<\/span>\n f<\/span>.<\/span>puts<\/span> body<\/span>\n f<\/span>.<\/span>puts<\/span> "==="<\/span>\n }<\/span>\n sock<\/span>.<\/span>close<\/span>\nend<\/span>\n\ndef<\/span> main<\/span>\n begin<\/span>\n server<\/span> =<\/span> TCPServer<\/span>.<\/span>new<\/span>(<\/span>'localhost'<\/span>,<\/span>