[Asterisk-code-review] res_pjsip: Replace invalid UTF-8 sequences in callerid name (asterisk[18])

[George Joseph]

Attention is currently required from: Sean Bright, George Joseph.

Hello Sean Bright, Joshua Colp, Friendly Automation, Benjamin Keith Ford, 

I'd like you to reexamine a change. Please visit

    https://gerrit.asterisk.org/c/asterisk/+/19898

to look at the new patch set (#10).

Change subject: res_pjsip: Replace invalid UTF-8 sequences in callerid name
......................................................................

res_pjsip: Replace invalid UTF-8 sequences in callerid name

* Added a new function ast_utf8_replace_invalid_chars() to
  utf8.c that copies a string replacing any invalid UTF-8
  sequences with the Unicode specified U+FFFD replacement
  character.  For example:  "abc\xffdef" becomes "abc\uFFFDdef".
  Any UTF-8 compliant implementation will show that character
  as a � character.

* Updated res_pjsip:set_id_from_hdr() to use
  ast_utf8_replace_invalid_chars and print a warning if any
  invalid sequences were found during the copy.

* Updated stasis_channels:ast_channel_publish_varset to use
  ast_utf8_replace_invalid_chars and print a warning if any
  invalid sequences were found during the copy.

ASTERISK-27830

Change-Id: I4ffbdb19c80bf0efc675d40078a3ca4f85c567d8
---
M include/asterisk/utf8.h
M main/stasis_channels.c
M main/utf8.c
M res/res_pjsip.c
4 files changed, 690 insertions(+), 7 deletions(-)


  git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/98/19898/10
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Gerrit-Project: asterisk
Gerrit-Branch: 18
Gerrit-Change-Id: I4ffbdb19c80bf0efc675d40078a3ca4f85c567d8
Gerrit-Change-Number: 19898
Gerrit-PatchSet: 10
Gerrit-Owner: George Joseph <gjoseph at digium.com>
Gerrit-Reviewer: Benjamin Keith Ford <bford at digium.com>
Gerrit-Reviewer: Friendly Automation
Gerrit-Reviewer: George Joseph <gjoseph at digium.com>
Gerrit-Reviewer: Joshua Colp <jcolp at sangoma.com>
Gerrit-Reviewer: Sean Bright <sean at seanbright.com>
Gerrit-Attention: Sean Bright <sean at seanbright.com>
Gerrit-Attention: George Joseph <gjoseph at digium.com>
Gerrit-MessageType: newpatchset
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