asterisk users - Jun 2015 - RES: How to invoke a binary file from the dial plan?

Ok. Thanks for the hint.

But, what exactly is a "System() dialplan application"? Is it a kind
of command that i can call in dial plan?

I will look for System() related to dial plans.

Thanks.

RODRIGO PIMENTA CARVALHO
Inatel Competence Center
Software
Ph: +55 35 3471 9200 RAMAL 979
________________________________________
De: asterisk-users-bounces at lists.digium.com [asterisk-users-bounces at
lists.digium.com] em Nome de Kevin Larsen [kevin.larsen at pioneerballoon.com]
Enviado: ter?a-feira, 2 de junho de 2015 17:31
Para: Asterisk Users Mailing List - Non-Commercial Discussion
Assunto: Re: [asterisk-users] How to invoke a binary file from the dial plan?
> Hi everyone.
>
> I'm new with Asterisk and I have to create a dial plan that will
> invoke a binary code. That is, asterisk will execute a program in
> the same machine. How to do it?
>
> Let me explain what I have to do:
>
> In the project that I am currently working, there is smartphones,
> SIP servers and doors/gates to be unlocked remotely. When the user
> executes an application on his/her phone, it will presents a button
> to unlock a remote gate or door.
> By  pressing such button, the application will send a SIP INVITE to
> the SIP server (Asterisk). In this moment, a existing dial plan
> should call an executable hosted in the current machine. In this
> case I need to know how to program my extensions.conf to let
> Asterisk invoke another software to me.
> The another software is the one responsible for unlocking a gate or door.
>
> So, how to codify my extensions.conf in order to make Asterisk
> invoke another software?
> Is another better way (idea) to implement my project using Asterisk
> and SIP? If so, comment, please!
>
> Any hint will be very helpful!
Look into the System() dialplan application. It will execute a command on the
system for you. Be aware that it will execute it as the user your Asterisk
instance is running as, so permissions can sometimes be a bit finicky to get
correct. I do something similar to pop my gate open. It is using nc to make a
connection to the device, but same general idea as what you are doing.

> Ok. Thanks for the hint.
> 
> But, what exactly is a "System() dialplan application"? Is it a
kind
> of command that i can call in dial plan? 
> 
> I will look for System() related to dial plans.
>From the Asterisk CLI type:
core show application System

It will print out the syntax for the command. One of the easier dialplan 
applications. 

exten => 1234,1,System(echo "This is a test" >> 
/var/log/asterisk/test.txt)

That line would use the Linux echo command to place the text "This is a 
test" into a file named test.txt located in the /var/log/asterisk 
directory.
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Hi Kevin.

Thank you very much for the hint! It worked very well!

Your example     ' exten => 1234,1,System(echo "This is a test"
>> /var/log/asterisk/test.txt) '     executes when the SIP client (my
softphone Jitsi) sends  a SIP INVITE to asterisk.  So, the softphone tries to
establish a session with target 1234.

Now, lets suppose my softphone rings and I answer a call. During the call, the
caller asks me to execute a command (ex: to open a door or gate). In this case,
what have I to program in dial plan to Asterisk execute System() again? Is it
possible to execute a dial plan even during an ongoing call?

Finally, lets suppose I want to use my softphone to execute a dial plan, even
without establishing a call (no session with target 1234). For example, If I
decide to open a dor or gate using my softphone, without existing an ongoing
call, what have I to program in dial plan to Asterisk executes System(). Is this
idea possible?

Any hint will be very hepful!

Best regards.


RODRIGO PIMENTA CARVALHO
Inatel Competence Center
Software
Ph: +55 35 3471 9200 RAMAL 979
________________________________________
De: asterisk-users-bounces at lists.digium.com [asterisk-users-bounces at
lists.digium.com] em Nome de Kevin Larsen [kevin.larsen at pioneerballoon.com]
Enviado: ter?a-feira, 2 de junho de 2015 17:50
Para: Asterisk Users Mailing List - Non-Commercial Discussion
Assunto: Re: [asterisk-users] RES: How to invoke a binary file from the dial   
plan?
> Ok. Thanks for the hint.
>
> But, what exactly is a "System() dialplan application"? Is it a
kind
> of command that i can call in dial plan?
>
> I will look for System() related to dial plans.
>From the Asterisk CLI type:
core show application System

It will print out the syntax for the command. One of the easier dialplan
applications.

exten => 1234,1,System(echo "This is a test" >>
/var/log/asterisk/test.txt)

That line would use the Linux echo command to place the text "This is a
test" into a file named test.txt located in the /var/log/asterisk
directory.