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Summary:ASTERISK-30248: ast_get_digit_str adds bogus initial delimiter if first character not to be spoken
Reporter:David Woolley (david55)Labels:
Date Opened:2022-09-27 16:39:41Date Closed:2022-10-26 09:00:46
Priority:MinorRegression?
Status:Closed/CompleteComponents:Applications/app_saynumber Applications/app_voicemail
Versions:GIT 16.28.0 Frequency of
Occurrence
Constant
Related
Issues:
is caused byASTERISK-29531 Add SAYFILES function
is duplicated byASTERISK-30266 Voicemail aborts when playing caller ID that includes + before digits
is duplicated byASTERISK-30403 VoiceMailMain. Problem with pronouncing CallerID Number.
Environment:Observed by third party on FreePBX 15.0.23.25, when trying to speak envelope with caller ID beginning with +, but diagnosed from github source code.Attachments:
Description:ast_get_digit_str() is used to construct a playback type filename sequence for speaking the digits of a number.  It tries to produce an & delimited string, with no initial &.  To decide whether to suppress the initial & it checks the index into the source array for zero.  However, if the first input character is not one it understands, the first output file name doesn't correspond to input character 0, and so does get an & prefix, This gets parsed as an empty file name in subsequent processing, which in the specific case where this was found caused the voicemail processing to abort at the point in announcing the envelope where it would have given the caller ID.

It appears to me that the same problem exists in at least ast_get_phonetic_str, and ast_get_character_str as well.

I'm retired myself, and don't have an Asterisk development and test environment to hand, any longer, so I'll just describe my suggested fix, rather than providing a patch.

My suggestion is to replace (num == 0 ? "%s" : "&%s") in the ast_str_append call with a const char * variable that is intialised to "%s", and changed to "&%s" after a file name is successfully added.

The problem can be avoided by replacing the + with the actual digits it represents.
Comments:By: Asterisk Team (asteriskteam) 2022-09-27 16:39:48.500-0500

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By: Joshua C. Colp (jcolp) 2022-09-27 17:12:00.827-0500

I think this is a regression introduced by ASTERISK-29531.

By: Joshua C. Colp (jcolp) 2022-09-27 17:12:58.052-0500

[~InterLinked] Will you look at this since it seems like you introduced it?

By: Friendly Automation (friendly-automation) 2022-10-26 09:00:48.861-0500

Change 19482 merged by Friendly Automation:
say: Don't prepend ampersand erroneously.

[https://gerrit.asterisk.org/c/asterisk/+/19482|https://gerrit.asterisk.org/c/asterisk/+/19482]

By: Friendly Automation (friendly-automation) 2022-10-26 09:01:19.065-0500

Change 19483 merged by Friendly Automation:
say: Don't prepend ampersand erroneously.

[https://gerrit.asterisk.org/c/asterisk/+/19483|https://gerrit.asterisk.org/c/asterisk/+/19483]

By: Friendly Automation (friendly-automation) 2022-10-26 09:52:41.606-0500

Change 19316 merged by Friendly Automation:
say: Don't prepend ampersand erroneously.

[https://gerrit.asterisk.org/c/asterisk/+/19316|https://gerrit.asterisk.org/c/asterisk/+/19316]

By: Friendly Automation (friendly-automation) 2022-10-26 10:07:25.784-0500

Change 19481 merged by George Joseph:
say: Don't prepend ampersand erroneously.

[https://gerrit.asterisk.org/c/asterisk/+/19481|https://gerrit.asterisk.org/c/asterisk/+/19481]

By: Friendly Automation (friendly-automation) 2023-01-04 06:01:42.997-0600

Change 19812 merged by Friendly Automation:
say: Don't prepend ampersand erroneously.

[https://gerrit.asterisk.org/c/asterisk/+/19812|https://gerrit.asterisk.org/c/asterisk/+/19812]

By: Friendly Automation (friendly-automation) 2023-01-04 06:38:26.970-0600

Change 19813 merged by George Joseph:
say: Don't prepend ampersand erroneously.

[https://gerrit.asterisk.org/c/asterisk/+/19813|https://gerrit.asterisk.org/c/asterisk/+/19813]