Looking for a bit more detail in using module I think this needs expect.interact just not clear how to implement it! Examples needed

[Thomas Campion]

I am trying to migrate from Perl expect to Java and am having trouble grasping how to write similar logic with expectit. I'm writing automation application that logs onto a network device and I'm trying to come up with universal method for doing it. I need to be able to match multiple things and respond accordingly.

here is Perl code, Im trying to do similar in java using expectit.

                     $exp-> spawn("ssh -l $username $device_ip\n");
                     $exp->expect(10,                                                                                            <- default timeout if no matches below found
                         [ qr/ssh -l $username $device_ip\r/ => sub { exp_continue; } ],                        <- regex match echoed command, continue matching
                         [ qr/\(yes\/no\)\?\s*$/ => sub { $exp->send("yes\n"); exp_continue; } ],            <- regex match some devices ask a question before presenting login prompt answer and continue matching
                         [ qr/[Pp]assword:\s*$/ => sub { $exp->send("$password\n"); exp_continue;} ], <- regex match password prompt, send password, and continue matching
                         [ qr/User/ => sub { $exp->send("$username\n"); exp_continue;} ],              <- regex username prompt, send username , and continue matching
                         [ qr/Login invalid/ => sub { $log .= 'bad un/pw';} ],                                      <- regex bad credentials, log it and end expect matching
                         [ qr/Press any key to continue/ => sub { $exp->send("\n"); exp_continue;} ], <- regex match some devices ask a question before presenting login prompt answer and continue matching
                         [ qr/#/ => sub {  $this_login_priv_mode = 'enable'; } ],                                   <- got enable prompt good news end this expect move onto the next thing
                         [ qr/>$/ => sub {
                                $exp->send("en\n");
                                $exp->expect(10, -re, "[Pp]assword:");                                                <- regex see user mode prompt try getting to privileged mode, and continue expect matching
                                $exp->send("$password}\n");
                                exp_continue; } ],
                         [ qr/closed/  } ],
                         [ qr/Connection refused/} ],
                         [ qr/Permission denied/ } ],                                                            <- regex matching other fault conditions, discontinue matching
                         [ qr/Access denied/ } ],
                         [ timeout => } ],
                     );


The above gives me a universal expect to log into several different vendor devices ultimately getting me to an enable prompt on a device to do config changes or show other output. I would like to construct expectit code to provide similar functionality. other things I do which are not clear for example I clear the capture buffer and send carriage return and collect everything before the # this gives me the device prompt which I capture to use in other expects. I found I needed to be more accurate with the device prompt to know when a command has finished executing. If I just used a single "#" for example I would sometimes get false positive matches when # appeared in a device where i wasn't expecting it.

I think expecit probably does all I need to do just not enough examples to cobble something together. I appreciate anyone who responds with some tips on how to move this forward. and thank you Alexey for all you effort on this project.

[Thomas Campion]

[Alexey Gavrilov]

Thomas, thank you for your feedback.

I’m a bit busy at the moment but I’ll try to give some tips later this week.  

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[Thomas Campion]

Awesome! thanks for looking at this.

[tcof...@gmail.com]

On Wednesday, September 14, 2016 at 2:32:30 PM UTC-5, Alexey Gavrilov wrote:

Hi Alex,

Hope you are doing well. My schedule has gotten free for me and was hoping to take a look at this again. Please let me know if you are able to provide some examples of what I described above.

[Alexey Gavrilov]

Hope you are doing well. My schedule has gotten free for me and was hoping to take a look at this again. Please let me know if you are able to provide some examples of what I described above. 

Still quite busy, sorry.

At this point I can only promise to release a new ExpectIt version on Christmas in which I plan to document all capabilities of Expect#interact()  method that would be used in your case. For now I have only this example:

https://github.com/Alexey1Gavrilov/ExpectIt/blob/master/expect-java8/src/main/java/net/sf/expectit/java8/Java8Example.java

Regards,

Alexey

[Thomas Campion]

Alexey,

 

 

I understand and Christmas timeline is totally OK. I hope to take deeper dive into what your tool does as it is a critical piece in the application I will be writing. Looking forward to thorough documentation. If I can be of any help testing or whatever please reach out. I appreciate the level of effort you have provided. I’m hoping once I get some more java experience I can contribute to this development community as well.

 

I work at Verizon and anticipate using your tool heavily to preform network management tasks and automating our processes aligned with that activity.

 

Thanks again for your timely support.

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[Alexey Gavrilov]

Hi Thomas,

On 14 Sep 2016, at 21:42, Thomas Campion <tc1...@gmail.com> wrote:

here is Perl code, Im trying to do similar in java using expectit.

                     $exp-> spawn("ssh -l $username $device_ip\n");
                     $exp->expect(10,                                                                                            <- default timeout if no matches below found
                         [ qr/ssh -l $username $device_ip\r/ => sub { exp_continue; } ],                        <- regex match echoed command, continue matching
                         [ qr/\(yes\/no\)\?\s*$/ => sub { $exp->send("yes\n"); exp_continue; } ],            <- regex match some devices ask a question before presenting login prompt answer and continue matching 
                         [ qr/[Pp]assword:\s*$/ => sub { $exp->send("$password\n"); exp_continue;} ], <- regex match password prompt, send password, and continue matching 
                         [ qr/User/ => sub { $exp->send("$username\n"); exp_continue;} ],              <- regex username prompt, send username , and continue matching 
                         [ qr/Login invalid/ => sub { $log .= 'bad un/pw';} ],                                      <- regex bad credentials, log it and end expect matching 
                         [ qr/Press any key to continue/ => sub { $exp->send("\n"); exp_continue;} ], <- regex match some devices ask a question before presenting login prompt answer and continue matching 
                         [ qr/#/ => sub {  $this_login_priv_mode = 'enable'; } ],                                   <- got enable prompt good news end this expect move onto the next thing 
                         [ qr/>$/ => sub {
                                $exp->send("en\n");
                                $exp->expect(10, -re, "[Pp]assword:");                                                <- regex see user mode prompt try getting to privileged mode, and continue expect matching 
                                $exp->send("$password}\n");
                                exp_continue; } ],
                         [ qr/closed/  } ],
                         [ qr/Connection refused/} ],
                         [ qr/Permission denied/ } ],                                                            <- regex matching other fault conditions, discontinue matching
                         [ qr/Access denied/ } ],
                         [ timeout => } ],
                     );

I don’t have a good way to test but some like the following may work for you (make sure you bump the ExpectIt version to 0.8.2):

final Result result = expect.interact()
         .when(contains("yes/no")).then((r) -> expect.sendLine("yes"))
         .when(contains("Press any key to continue")).then((r) -> expect.sendLine())
         .when(regexp("[Pp]assword:\\s")).then((r) -> expect.sendLine("SECRET"))
         .when(regexp("User")).then((r) -> expect.sendLine("USERNAME"))
         .when(regexp(">$")).then((r) -> expect.sendLine("en"))
         .until(
                 anyOf(
                         contains("#"),
                         contains("closed"),
                         contains("Login invalid"),
                         contains("Connection refused"),
                         contains("Permission denied"),
                         contains("Access denied")));
if ("#".equals(result.group())) {
    System.out.println("this_login_priv_mode");
} else if ("Login invalid".equals(result.group())) {
    System.out.println("bad un/pw");
}

Regards,

Alexey