Support creating session log of telnet/ssh

If you have
input:
  debug: session_log

Then session_log-telnet and session_log-ssh will be created showing what
the telnet/ssh saw. Helpful in model development.

3 files changed, 11 insertions, 3 deletions

diff --git a/lib/oxidized/config.rb b/lib/oxidized/config.rb
index b7fd008..ddfde81 100644
--- a/lib/oxidized/config.rb
+++ b/lib/oxidized/config.rb
@@ -29,7 +29,8 @@ module Oxidized
   CFGS.default.vars          = {}             # could be 'enable'=>'enablePW'
   CFGS.default.groups        = {}             # group level configuration
 
-  CFGS.default.input.default = 'ssh, telnet'
+  CFGS.default.input.default    = 'ssh, telnet'
+  CFGS.default.input.debug      = false # or String for session log file
   CFGS.default.input.ssh.secure = false # complain about changed certs
 
   CFGS.default.output.default = 'file'  # file, git
diff --git a/lib/oxidized/input/ssh.rb b/lib/oxidized/input/ssh.rb
index e3fcede..62a31eb 100644
--- a/lib/oxidized/input/ssh.rb
+++ b/lib/oxidized/input/ssh.rb
@@ -20,6 +20,7 @@ module Oxidized
       @output     = ''
       @node.model.cfg['ssh'].each { |cb| instance_exec(&cb) }
       secure = CFG.input.ssh.secure
+      @log = File.open(CFG.input.debug?.to_s + '-ssh', 'w') if CFG.input.debug?
       @ssh = Net::SSH.start @node.ip, @node.auth[:username],
                             :password => @node.auth[:password], :timeout => CFG.timeout,
                             :paranoid => secure
@@ -59,12 +60,14 @@ module Oxidized
       Timeout::timeout(CFG.timeout) { @ssh.loop }
     rescue Errno::ECONNRESET, Net::SSH::Disconnect, IOError
     ensure
+      @log.close if CFG.input.debug?
       (@ssh.close rescue true) unless @ssh.closed?
     end
 
     def shell_open ssh
       @ses = ssh.open_channel do |ch|
         ch.on_data do |_ch, data|
+          @log.print data if CFG.input.debug?
           @output << data
           @output = @node.model.expects @output
         end
diff --git a/lib/oxidized/input/telnet.rb b/lib/oxidized/input/telnet.rb
index d52ebf0..62f361e 100644
--- a/lib/oxidized/input/telnet.rb
+++ b/lib/oxidized/input/telnet.rb
@@ -10,8 +10,12 @@ module Oxidized
       @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
+
+      opt = { 'Host' => @node.ip, 'Timeout' => @timeout,
+              'Model' => @node.model }
+      opt['Output_log'] = CFG.input.debug?.to_s + '-telnet' if CFG.input.debug?
+
+      @telnet  = Net::Telnet.new opt
       expect username
       @telnet.puts @node.auth[:username]
       expect password