[Icecast] <on-connect> / <on-disconnect> not working

[Jack Elliott]

Hello Petr,


On 7/14/22 22:10, Petr Pisar wrote:
> V Thu, Jul 14, 2022 at 01:17:04PM -0700, Jack Elliott napsal(a):
>> Thank you, Petr!
>>
>> Yes, error.log is not very helpful. With loglevel set to 4 (debug) I
>> find that the server does claim to run the commands, but there is
>> nothing to indicate what the problem might be:
>>
>> [2022-07-14  13:05:13] DBUG source/source_run_script Starting command /home/my_username/bin/email_onconnect.sh
>> [2022-07-14  13:05:13] DBUG source/source_update_settings disconnect script "/home/my_username/bin/email_ondisconnect.sh"
>>
> I really recommend using the strace tool to verify the script is successfully
> executed.
>
> I suspect that a problem is in your script. E.g. it does not work without
> a terminal or with /dev/null connected to standard input and output. Icecast
> changes file descriptors for the executed commands.
>
> Does you script work when executed from a shell like this?
>
>      /home/my_username/bin/email_onconnect.sh </dev/null >/dev/null 2>/dev/null

Yes it does.

I don't know how to interpret the output of strace.

Here is what your suggested command gave when I connected to the 
mountpoint on the Icecast server, then disconnected from it (username 
and target email addresses anonymized):

$ sudo strace -fq -e execve -p 673
[sudo] password for my_username:
[pid 20973] +++ exited with 0 +++
[pid 20992] +++ exited with 0 +++
[pid 20994] +++ exited with 0 +++
[pid 20993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20994, si_uid=112, si_status=0, si_utime=0, si_stime=1} ---
[pid 20995] execve("/home/my_username/bin/email_onconnect.sh", ["/home/my_username/bin/email_onconnec"..., "/stream"], [/* 5 vars */]) = 0
[pid 20996] execve("/usr/bin/msmtp", ["msmtp", "my_address at org"], [/* 7 vars */]) = 0
[pid 20996] +++ exited with 78 +++
[pid 20995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20996, si_uid=112, si_status=78, si_utime=0, si_stime=1} ---
[pid 20995] +++ exited with 78 +++
[pid 20997] +++ exited with 0 +++
[pid 20993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20997, si_uid=112, si_status=0, si_utime=0, si_stime=1} ---
[pid 20993] +++ exited with 0 +++
[pid 20998] execve("/home/my_username/bin/email_ondisconnect.sh", ["/home/my_username/bin/email_ondiscon"..., "/stream"], [/* 5 vars */]) = 0
[pid 20999] execve("/usr/bin/msmtp", ["msmtp", "my_address at org"], [/* 7 vars */]) = 0
[pid 20999] +++ exited with 78 +++
[pid 20998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20999, si_uid=112, si_status=78, si_utime=0, si_stime=1} ---
[pid 20998] +++ exited with 78 +++
[pid 21000] +++ exited with 0 +++

This thread is getting a little messy.

Thank you for looking at this!

>
>> This with Icecast 2.4.0 -- I am waiting for some help with a question I
>> have posted in this mailing list to confirm I have the right repo
>> selected before I attempt upgrading Icecast. It is a running,
>> in-operation service for our radio station and I don't want to break
>> anything.
>>
> While Icecast developers have a good relationship with Debian, I would recommend
> you to contact vendor of the repository in question. Icecast developers cannot
> be responsible for packaging Icecast by someone else.
>
> -- Petr
>
>
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