mirror of
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1bcc5eb922
nobu.nakada@nifty.ne.jp git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@1744 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
599 lines
19 KiB
Ruby
599 lines
19 KiB
Ruby
=begin
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== NAME
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net/telnet.rb - simple telnet client library
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Wakou Aoyama <wakou@fsinet.or.jp>
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=== MAKE NEW TELNET OBJECT
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host = Net::Telnet::new({
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"Binmode" => false, # default: false
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"Host" => "localhost", # default: "localhost"
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"Output_log" => "output_log", # default: nil (no output)
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"Dump_log" => "dump_log", # default: nil (no output)
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"Port" => 23, # default: 23
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"Prompt" => /[$%#>] \z/n, # default: /[$%#>] \z/n
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"Telnetmode" => true, # default: true
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"Timeout" => 10, # default: 10
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# if ignore timeout then set "Timeout" to false.
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"Waittime" => 0, # default: 0
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"Proxy" => proxy # default: nil
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# proxy is Net::Telnet or IO object
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})
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Telnet object has socket class methods.
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if set "Telnetmode" option to false. not telnet command interpretation.
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"Waittime" is time to confirm "Prompt". There is a possibility that
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the same character as "Prompt" is included in the data, and, when
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the network or the host is very heavy, the value is enlarged.
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=== STATUS OUTPUT
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host = Net::Telnet::new({"Host" => "localhost"}){|c| print c }
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connection status output.
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example:
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Trying localhost...
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Connected to localhost.
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=== WAIT FOR MATCH
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line = host.waitfor(/match/)
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line = host.waitfor({"Match" => /match/,
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"String" => "string",
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"Timeout" => secs})
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# if ignore timeout then set "Timeout" to false.
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if set "String" option, then Match == Regexp.new(quote("string"))
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==== REALTIME OUTPUT
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host.waitfor(/match/){|c| print c }
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host.waitfor({"Match" => /match/,
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"String" => "string",
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"Timeout" => secs}){|c| print c}
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of cource, set sync=true or flush is necessary.
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=== SEND STRING AND WAIT PROMPT
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line = host.cmd("string")
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line = host.cmd({"String" => "string",
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"Match" => /[$%#>] \z/n,
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"Timeout" => 10})
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==== REALTIME OUTPUT
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host.cmd("string"){|c| print c }
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host.cmd({"String" => "string",
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"Match" => /[$%#>] \z/n,
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"Timeout" => 10}){|c| print c }
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of cource, set sync=true or flush is necessary.
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=== SEND STRING
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host.print("string")
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host.puts("string")
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Telnet#puts() adds "\n" to the last of "string".
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WARNING: Telnet#print() NOT adds "\n" to the last of "string", in the future.
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If "Telnetmode" option is true, then escape IAC code ("\xFF"). If
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"Binmode" option is false, then convert "\n" to EOL(end of line) code.
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If "WILL SGA" and "DO BIN", then EOL is CR. If "WILL SGA", then EOL is
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CR + NULL. If the other cases, EOL is CR + LF.
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=== TOGGLE TELNET COMMAND INTERPRETATION
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host.telnetmode # return the current status (true or false)
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host.telnetmode = true # do telnet command interpretation (default)
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host.telnetmode = false # don't telnet command interpretation
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=== TOGGLE NEWLINE TRANSLATION
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host.binmode # return the current status (true or false)
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host.binmode = true # no translate newline
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host.binmode = false # translate newline (default)
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=== LOGIN
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host.login("username", "password")
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host.login({"Name" => "username",
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"Password" => "password"})
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if no password prompt:
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host.login("username")
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host.login({"Name" => "username"})
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==== REALTIME OUTPUT
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host.login("username", "password"){|c| print c }
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host.login({"Name" => "username",
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"Password" => "password"}){|c| print c }
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of cource, set sync=true or flush is necessary.
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== EXAMPLE
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=== LOGIN AND SEND COMMAND
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localhost = Net::Telnet::new({"Host" => "localhost",
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"Timeout" => 10,
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"Prompt" => /[$%#>] \z/n})
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localhost.login("username", "password"){|c| print c }
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localhost.cmd("command"){|c| print c }
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localhost.close
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=== CHECKS A POP SERVER TO SEE IF YOU HAVE MAIL
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pop = Net::Telnet::new({"Host" => "your_destination_host_here",
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"Port" => 110,
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"Telnetmode" => false,
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"Prompt" => /^\+OK/n})
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pop.cmd("user " + "your_username_here"){|c| print c}
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pop.cmd("pass " + "your_password_here"){|c| print c}
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pop.cmd("list"){|c| print c}
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=end
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require "socket"
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require "delegate"
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require "timeout"
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require "English"
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module Net
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class Telnet < SimpleDelegator
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IAC = 255.chr # "\377" # "\xff" # interpret as command:
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DONT = 254.chr # "\376" # "\xfe" # you are not to use option
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DO = 253.chr # "\375" # "\xfd" # please, you use option
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WONT = 252.chr # "\374" # "\xfc" # I won't use option
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WILL = 251.chr # "\373" # "\xfb" # I will use option
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SB = 250.chr # "\372" # "\xfa" # interpret as subnegotiation
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GA = 249.chr # "\371" # "\xf9" # you may reverse the line
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EL = 248.chr # "\370" # "\xf8" # erase the current line
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EC = 247.chr # "\367" # "\xf7" # erase the current character
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AYT = 246.chr # "\366" # "\xf6" # are you there
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AO = 245.chr # "\365" # "\xf5" # abort output--but let prog finish
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IP = 244.chr # "\364" # "\xf4" # interrupt process--permanently
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BREAK = 243.chr # "\363" # "\xf3" # break
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DM = 242.chr # "\362" # "\xf2" # data mark--for connect. cleaning
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NOP = 241.chr # "\361" # "\xf1" # nop
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SE = 240.chr # "\360" # "\xf0" # end sub negotiation
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EOR = 239.chr # "\357" # "\xef" # end of record (transparent mode)
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ABORT = 238.chr # "\356" # "\xee" # Abort process
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SUSP = 237.chr # "\355" # "\xed" # Suspend process
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EOF = 236.chr # "\354" # "\xec" # End of file
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SYNCH = 242.chr # "\362" # "\xf2" # for telfunc calls
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OPT_BINARY = 0.chr # "\000" # "\x00" # Binary Transmission
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OPT_ECHO = 1.chr # "\001" # "\x01" # Echo
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OPT_RCP = 2.chr # "\002" # "\x02" # Reconnection
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OPT_SGA = 3.chr # "\003" # "\x03" # Suppress Go Ahead
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OPT_NAMS = 4.chr # "\004" # "\x04" # Approx Message Size Negotiation
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OPT_STATUS = 5.chr # "\005" # "\x05" # Status
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OPT_TM = 6.chr # "\006" # "\x06" # Timing Mark
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OPT_RCTE = 7.chr # "\a" # "\x07" # Remote Controlled Trans and Echo
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OPT_NAOL = 8.chr # "\010" # "\x08" # Output Line Width
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OPT_NAOP = 9.chr # "\t" # "\x09" # Output Page Size
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OPT_NAOCRD = 10.chr # "\n" # "\x0a" # Output Carriage-Return Disposition
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OPT_NAOHTS = 11.chr # "\v" # "\x0b" # Output Horizontal Tab Stops
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OPT_NAOHTD = 12.chr # "\f" # "\x0c" # Output Horizontal Tab Disposition
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OPT_NAOFFD = 13.chr # "\r" # "\x0d" # Output Formfeed Disposition
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OPT_NAOVTS = 14.chr # "\016" # "\x0e" # Output Vertical Tabstops
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OPT_NAOVTD = 15.chr # "\017" # "\x0f" # Output Vertical Tab Disposition
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OPT_NAOLFD = 16.chr # "\020" # "\x10" # Output Linefeed Disposition
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OPT_XASCII = 17.chr # "\021" # "\x11" # Extended ASCII
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OPT_LOGOUT = 18.chr # "\022" # "\x12" # Logout
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OPT_BM = 19.chr # "\023" # "\x13" # Byte Macro
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OPT_DET = 20.chr # "\024" # "\x14" # Data Entry Terminal
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OPT_SUPDUP = 21.chr # "\025" # "\x15" # SUPDUP
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OPT_SUPDUPOUTPUT = 22.chr # "\026" # "\x16" # SUPDUP Output
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OPT_SNDLOC = 23.chr # "\027" # "\x17" # Send Location
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OPT_TTYPE = 24.chr # "\030" # "\x18" # Terminal Type
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OPT_EOR = 25.chr # "\031" # "\x19" # End of Record
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OPT_TUID = 26.chr # "\032" # "\x1a" # TACACS User Identification
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OPT_OUTMRK = 27.chr # "\e" # "\x1b" # Output Marking
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OPT_TTYLOC = 28.chr # "\034" # "\x1c" # Terminal Location Number
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OPT_3270REGIME = 29.chr # "\035" # "\x1d" # Telnet 3270 Regime
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OPT_X3PAD = 30.chr # "\036" # "\x1e" # X.3 PAD
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OPT_NAWS = 31.chr # "\037" # "\x1f" # Negotiate About Window Size
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OPT_TSPEED = 32.chr # " " # "\x20" # Terminal Speed
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OPT_LFLOW = 33.chr # "!" # "\x21" # Remote Flow Control
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OPT_LINEMODE = 34.chr # "\"" # "\x22" # Linemode
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OPT_XDISPLOC = 35.chr # "#" # "\x23" # X Display Location
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OPT_OLD_ENVIRON = 36.chr # "$" # "\x24" # Environment Option
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OPT_AUTHENTICATION = 37.chr # "%" # "\x25" # Authentication Option
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OPT_ENCRYPT = 38.chr # "&" # "\x26" # Encryption Option
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OPT_NEW_ENVIRON = 39.chr # "'" # "\x27" # New Environment Option
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OPT_EXOPL = 255.chr # "\377" # "\xff" # Extended-Options-List
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NULL = "\000"
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CR = "\015"
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LF = "\012"
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EOL = CR + LF
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REVISION = '$Id$'
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def initialize(options)
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@options = options
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@options["Host"] = "localhost" unless @options.has_key?("Host")
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@options["Port"] = 23 unless @options.has_key?("Port")
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@options["Prompt"] = /[$%#>] \z/n unless @options.has_key?("Prompt")
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@options["Timeout"] = 10 unless @options.has_key?("Timeout")
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@options["Waittime"] = 0 unless @options.has_key?("Waittime")
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unless @options.has_key?("Binmode")
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@options["Binmode"] = false
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else
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unless (true == @options["Binmode"] or false == @options["Binmode"])
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raise ArgumentError, "Binmode option required true or false"
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end
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end
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unless @options.has_key?("Telnetmode")
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@options["Telnetmode"] = true
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else
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unless (true == @options["Telnetmode"] or false == @options["Telnetmode"])
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raise ArgumentError, "Telnetmode option required true or false"
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end
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end
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@telnet_option = { "SGA" => false, "BINARY" => false }
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if @options.has_key?("Output_log")
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@log = File.open(@options["Output_log"], 'a+')
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@log.sync = true
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@log.binmode
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end
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if @options.has_key?("Dump_log")
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@dumplog = File.open(@options["Dump_log"], 'a+')
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@dumplog.sync = true
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@dumplog.binmode
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def @dumplog.log_dump(dir, x)
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len = x.length
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addr = 0
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offset = 0
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while 0 < len
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if len < 16
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line = x[offset, len]
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else
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line = x[offset, 16]
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end
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hexvals = line.unpack('H*')[0]
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hexvals += ' ' * (32 - hexvals.length)
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hexvals = format "%s %s %s %s " * 4, *hexvals.unpack('a2' * 16)
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line = line.gsub(/[\000-\037\177-\377]/n, '.')
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printf "%s 0x%5.5x: %s%s\n", dir, addr, hexvals, line
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addr += 16
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offset += 16
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len -= 16
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end
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print "\n"
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end
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end
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if @options.has_key?("Proxy")
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if @options["Proxy"].kind_of?(Net::Telnet)
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@sock = @options["Proxy"].sock
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elsif @options["Proxy"].kind_of?(IO)
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@sock = @options["Proxy"]
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else
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raise "Error; Proxy is Net::Telnet or IO object."
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end
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else
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message = "Trying " + @options["Host"] + "...\n"
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yield(message) if block_given?
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@log.write(message) if @options.has_key?("Output_log")
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@dumplog.log_dump('#', message) if @options.has_key?("Dump_log")
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begin
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if @options["Timeout"] == false
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@sock = TCPsocket.open(@options["Host"], @options["Port"])
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else
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timeout(@options["Timeout"]) do
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@sock = TCPsocket.open(@options["Host"], @options["Port"])
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end
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end
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rescue TimeoutError
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raise TimeoutError, "timed-out; opening of the host"
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rescue
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@log.write($ERROR_INFO.to_s + "\n") if @options.has_key?("Output_log")
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@dumplog.log_dump('#', $ERROR_INFO.to_s + "\n") if @options.has_key?("Dump_log")
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raise
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end
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@sock.sync = true
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@sock.binmode
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message = "Connected to " + @options["Host"] + ".\n"
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yield(message) if block_given?
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@log.write(message) if @options.has_key?("Output_log")
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@dumplog.log_dump('#', message) if @options.has_key?("Dump_log")
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end
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super(@sock)
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end # initialize
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attr :sock
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def telnetmode(mode = nil)
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case mode
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when nil
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@options["Telnetmode"]
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when true, false
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@options["Telnetmode"] = mode
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else
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raise ArgumentError, "required true or false"
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end
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end
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def telnetmode=(mode)
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if (true == mode or false == mode)
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@options["Telnetmode"] = mode
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else
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raise ArgumentError, "required true or false"
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end
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end
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def binmode(mode = nil)
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case mode
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when nil
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@options["Binmode"]
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when true, false
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@options["Binmode"] = mode
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else
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raise ArgumentError, "required true or false"
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end
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end
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def binmode=(mode)
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if (true == mode or false == mode)
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@options["Binmode"] = mode
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else
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raise ArgumentError, "required true or false"
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end
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end
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def preprocess(string)
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# combine CR+NULL into CR
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string = string.gsub(/#{CR}#{NULL}/no, CR) if @options["Telnetmode"]
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# combine EOL into "\n"
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string = string.gsub(/#{EOL}/no, "\n") unless @options["Binmode"]
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string.gsub(/#{IAC}(
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[#{IAC}#{AO}#{AYT}#{DM}#{IP}#{NOP}]|
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[#{DO}#{DONT}#{WILL}#{WONT}]
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[#{OPT_BINARY}-#{OPT_NEW_ENVIRON}#{OPT_EXOPL}]|
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#{SB}[^#{IAC}]*#{IAC}#{SE}
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)/xno) do
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if IAC == $1 # handle escaped IAC characters
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IAC
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elsif AYT == $1 # respond to "IAC AYT" (are you there)
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self.write("nobody here but us pigeons" + EOL)
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''
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elsif DO[0] == $1[0] # respond to "IAC DO x"
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if OPT_BINARY[0] == $1[1]
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@telnet_option["BINARY"] = true
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self.write(IAC + WILL + OPT_BINARY)
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else
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self.write(IAC + WONT + $1[1..1])
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end
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''
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elsif DONT[0] == $1[0] # respond to "IAC DON'T x" with "IAC WON'T x"
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self.write(IAC + WONT + $1[1..1])
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''
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elsif WILL[0] == $1[0] # respond to "IAC WILL x"
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if OPT_BINARY[0] == $1[1]
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self.write(IAC + DO + OPT_BINARY)
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elsif OPT_ECHO[0] == $1[1]
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self.write(IAC + DO + OPT_ECHO)
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elsif OPT_SGA[0] == $1[1]
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@telnet_option["SGA"] = true
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self.write(IAC + DO + OPT_SGA)
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else
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self.write(IAC + DONT + $1[1..1])
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end
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''
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elsif WONT[0] == $1[0] # respond to "IAC WON'T x"
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if OPT_ECHO[0] == $1[1]
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self.write(IAC + DONT + OPT_ECHO)
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elsif OPT_SGA[0] == $1[1]
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@telnet_option["SGA"] = false
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self.write(IAC + DONT + OPT_SGA)
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else
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self.write(IAC + DONT + $1[1..1])
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end
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''
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else
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''
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end
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end
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end # preprocess
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def waitfor(options)
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time_out = @options["Timeout"]
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waittime = @options["Waittime"]
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if options.kind_of?(Hash)
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prompt = if options.has_key?("Match")
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options["Match"]
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elsif options.has_key?("Prompt")
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options["Prompt"]
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elsif options.has_key?("String")
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Regexp.new( Regexp.quote(options["String"]) )
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end
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time_out = options["Timeout"] if options.has_key?("Timeout")
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waittime = options["Waittime"] if options.has_key?("Waittime")
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else
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prompt = options
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end
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if time_out == false
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time_out = nil
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end
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line = ''
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buf = ''
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rest = ''
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until(prompt === line and not IO::select([@sock], nil, nil, waittime))
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unless IO::select([@sock], nil, nil, time_out)
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raise TimeoutError, "timed-out; wait for the next data"
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end
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begin
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c = @sock.sysread(1024 * 1024)
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@dumplog.log_dump('<', c) if @options.has_key?("Dump_log")
|
|
if @options["Telnetmode"]
|
|
c = rest + c
|
|
if Integer(c.rindex(/#{IAC}#{SE}/no)) <
|
|
Integer(c.rindex(/#{IAC}#{SB}/no))
|
|
buf = preprocess(c[0 ... c.rindex(/#{IAC}#{SB}/no)])
|
|
rest = c[c.rindex(/#{IAC}#{SB}/no) .. -1]
|
|
elsif pt = c.rindex(/#{IAC}[^#{IAC}#{AO}#{AYT}#{DM}#{IP}#{NOP}]?\z/no)
|
|
buf = preprocess(c[0 ... pt])
|
|
rest = c[pt .. -1]
|
|
else
|
|
buf = preprocess(c)
|
|
rest = ''
|
|
end
|
|
end
|
|
@log.print(buf) if @options.has_key?("Output_log")
|
|
line += buf
|
|
yield buf if block_given?
|
|
rescue EOFError # End of file reached
|
|
if line == ''
|
|
line = nil
|
|
yield nil if block_given?
|
|
end
|
|
break
|
|
end
|
|
end
|
|
line
|
|
end
|
|
|
|
def write(string)
|
|
length = string.length
|
|
while 0 < length
|
|
IO::select(nil, [@sock])
|
|
@dumplog.log_dump('>', string[-length..-1]) if @options.has_key?("Dump_log")
|
|
length -= @sock.syswrite(string[-length..-1])
|
|
end
|
|
end
|
|
|
|
def _print(string)
|
|
string = string.gsub(/#{IAC}/no, IAC + IAC) if @options["Telnetmode"]
|
|
|
|
if @options["Binmode"]
|
|
self.write(string)
|
|
else
|
|
if @telnet_option["BINARY"] and @telnet_option["SGA"]
|
|
# IAC WILL SGA IAC DO BIN send EOL --> CR
|
|
self.write(string.gsub(/\n/n, CR))
|
|
elsif @telnet_option["SGA"]
|
|
# IAC WILL SGA send EOL --> CR+NULL
|
|
self.write(string.gsub(/\n/n, CR + NULL))
|
|
else
|
|
# NONE send EOL --> CR+LF
|
|
self.write(string.gsub(/\n/n, EOL))
|
|
end
|
|
end
|
|
end
|
|
|
|
def puts(string)
|
|
self._print(string + "\n")
|
|
end
|
|
|
|
def print(string)
|
|
if $VERBOSE
|
|
$stderr.puts 'WARNING: Telnet#print("string") NOT adds "\n" to the last of "string", in the future.'
|
|
$stderr.puts ' cf. Telnet#puts().'
|
|
end
|
|
self.puts(string)
|
|
end
|
|
|
|
def cmd(options)
|
|
match = @options["Prompt"]
|
|
time_out = @options["Timeout"]
|
|
|
|
if options.kind_of?(Hash)
|
|
string = options["String"]
|
|
match = options["Match"] if options.has_key?("Match")
|
|
time_out = options["Timeout"] if options.has_key?("Timeout")
|
|
else
|
|
string = options
|
|
end
|
|
|
|
self.puts(string)
|
|
if block_given?
|
|
waitfor({"Prompt" => match, "Timeout" => time_out}){|c| yield c }
|
|
else
|
|
waitfor({"Prompt" => match, "Timeout" => time_out})
|
|
end
|
|
end
|
|
|
|
def login(options, password = nil)
|
|
if options.kind_of?(Hash)
|
|
username = options["Name"]
|
|
password = options["Password"]
|
|
else
|
|
username = options
|
|
end
|
|
|
|
if block_given?
|
|
line = waitfor(/login[: ]*\z/n){|c| yield c }
|
|
if password
|
|
line += cmd({"String" => username,
|
|
"Match" => /Password[: ]*\z/n}){|c| yield c }
|
|
line += cmd(password){|c| yield c }
|
|
else
|
|
line += cmd(username){|c| yield c }
|
|
end
|
|
else
|
|
line = waitfor(/login[: ]*\z/n)
|
|
if password
|
|
line += cmd({"String" => username,
|
|
"Match" => /Password[: ]*\z/n})
|
|
line += cmd(password)
|
|
else
|
|
line += cmd(username)
|
|
end
|
|
end
|
|
line
|
|
end
|
|
|
|
end
|
|
end
|
|
|
|
|
|
=begin
|
|
|
|
== HISTORY
|
|
|
|
delete. see cvs log.
|
|
|
|
|
|
=end
|