1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
module Oxidized
require 'net/telnet'
require 'oxidized/input/cli'
class Telnet < Input
RescueFail = {}
include Input::CLI
attr_reader :telnet
def connect node
@node = node
@timeout = CFG.timeout
@node.model.cfg['telnet'].each { |cb| instance_exec(&cb) }
@telnet = Net::Telnet.new 'Host' => @node.ip, 'Timeout' => @timeout,
'Model' => @node.model
expect username
@telnet.puts @node.auth[:username]
expect password
@telnet.puts @node.auth[:password]
expect @node.prompt
end
def connected?
@telnet and not @telnet.sock.closed?
end
def cmd cmd, expect=@node.prompt
Log.debug "Telnet: #{cmd} @#{@node.name}"
args = { 'String' => cmd }
args.merge!({ 'Match' => expect, 'Timeout' => @timeout }) if expect
@telnet.cmd args
end
def send data
@telnet.write data
end
def output
@telnet.output
end
private
def expect re
@telnet.waitfor 'Match' => re, 'Timeout' => @timeout
end
def disconnect
begin
disconnect_cli
@telnet.close
rescue Errno::ECONNRESET
end
end
end
end
class Net::Telnet
## FIXME: we just need 'line = model.expects line' to handle pager
## how to do this, without redefining the whole damn thing
## FIXME: we also need output (not sure I'm going to support this)
attr_reader :output
def waitfor(options) # :yield: recvdata
time_out = @options["Timeout"]
waittime = @options["Waittime"]
fail_eof = @options["FailEOF"]
model = @options["Model"]
if options.kind_of?(Hash)
prompt = if options.has_key?("Match")
options["Match"]
elsif options.has_key?("Prompt")
options["Prompt"]
elsif options.has_key?("String")
Regexp.new( Regexp.quote(options["String"]) )
end
time_out = options["Timeout"] if options.has_key?("Timeout")
waittime = options["Waittime"] if options.has_key?("Waittime")
fail_eof = options["FailEOF"] if options.has_key?("FailEOF")
else
prompt = options
end
if time_out == false
time_out = nil
end
line = ''
buf = ''
rest = ''
until(prompt === line and not IO::select([@sock], nil, nil, waittime))
unless IO::select([@sock], nil, nil, time_out)
raise TimeoutError, "timed out while waiting for more data"
end
begin
c = @sock.readpartial(1024 * 1024)
@output = c
@dumplog.log_dump('<', c) if @options.has_key?("Dump_log")
if @options["Telnetmode"]
c = rest + c
if Integer(c.rindex(/#{IAC}#{SE}/no) || 0) <
Integer(c.rindex(/#{IAC}#{SB}/no) || 0)
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) ||
c.rindex(/\r\z/no)
buf = preprocess(c[0 ... pt])
rest = c[pt .. -1]
else
buf = preprocess(c)
rest = ''
end
else
# Not Telnetmode.
#
# We cannot use preprocess() on this data, because that
# method makes some Telnetmode-specific assumptions.
buf = rest + c
rest = ''
unless @options["Binmode"]
if pt = buf.rindex(/\r\z/no)
buf = buf[0 ... pt]
rest = buf[pt .. -1]
end
buf.gsub!(/#{EOL}/no, "\n")
end
end
@log.print(buf) if @options.has_key?("Output_log")
line += buf
line = model.expects line
line = yield line if block_given?
yield buf if block_given?
rescue EOFError # End of file reached
raise if fail_eof
if line == ''
line = nil
yield nil if block_given?
end
break
end
end
line
end
end
|
