Hi haukex,

in my private environment I follow some logfiles by File::Tail and report lines of interest to some TELEGRAM Channel via WWW::Telegram::BotAPI. The TELEGRAM API knows some forms of limited formatting of the string to send. One of the formatting options is called "HTML", although there are only 3 or 4 fomatting tags similar to the HTML tags.

One e.g. is:

<strong>xxx</strong>
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The example I gave is very much the same as a real logfile line. But if you wish I can give a real example:

$av_tmp_LINE = "Jun  3 23:20:05 f42252s5 postfix/pickup[204714]: E1E63
+A045C: uid=33 from=<www-data>"
$av_tmp_STRING = "Logfile: " . "<strong>" . $av_obj_TMP->{input} . "</
+strong>" . " " . $av_tmp_LINE;
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Now the string $av_tmp_STRING should be sent to the TELEGRAM Channel using "HTML" formatting. But unfotunately inside the string there is the "<www-data>" which looks like a formatting string, but is unsupported.

This causes the module to abort, although eval is used.

Messge:

"Request failed with error 'ERROR: code 400: Bad Request: can't parse 
+entities: Unsupported start tag "www" at byte offset 53 at /usr/share
+/perl5/WWW/Telegram/BotAPI.pm line 224. WWW::Telegram::BotAPI::api_re
+quest(undef, undef, HASH(0x55e57ea8da98)) called at ./av_perlre.pl li
+ne 268 eval {...} called at ./av_perlre.pl line 266 ', but I'm still 
+alive! at ./av_perlre.pl line 266."
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Since I am not a very experience programmer, I probably have done something wrong. I have already reported the issue to the module creator.

My Code:

$av_std_RETVAL = eval 
{
  $av_obj_TGRAM->sendMessage (
    {
        chat_id => $av_loc_tgram_CHATID,
        text    => $av_tmp_STRING,
        disable_notification => 'false',
        parse_mode => 'HTML',
    }
  )
}
or warn "Request failed with error '$@', but I'm still alive!";
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This is according to the docu. The docu says, by using eval the way above, the program will not abort - but it does.

My fault!

I ran the test-script in debug mode. The debug stopped and I assumed this aborted the script - but did not!

The eval works

Anyhow! I have to find a way to catch the unsupported formatting codes and eliminate them. I guess the regex will do! I will see!

Regards Kallewirsch