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scripts: add wrapper to update Postfix configuration safely (#3484)

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The new function can

1. update/append
2. update/prepend
3. initialize if non-existent

options in `/etc/postfix/main.cf` in a safe and secure manner. When the
container is improperly restarted, the option is not applied twice.

---

Co-authored-by: Casper <casperklein@users.noreply.github.com>
Co-authored-by: Brennan Kinney <5098581+polarathene@users.noreply.github.com>
This commit is contained in:
Georg Lauterbach 2023-08-22 10:03:41 +02:00 • committed by GitHub
parent 758fd9c913
commit cf9eb8278a
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6 changed files with 55 additions and 16 deletions
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7
target/scripts/helpers/aliases.sh
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@ -30,12 +30,7 @@ function _handle_postfix_regexp_config() {
_log 'trace' "Adding regexp alias file postfix-regexp.cf"
cp -f /tmp/docker-mailserver/postfix-regexp.cf /etc/postfix/regexp
if ! grep 'virtual_alias_maps.*pcre:/etc/postfix/regexp' /etc/postfix/main.cf; then
sed -i -E \
's|virtual_alias_maps(.*)|virtual_alias_maps\1 pcre:/etc/postfix/regexp|g' \
/etc/postfix/main.cf
fi
_add_to_or_update_postfix_main 'virtual_alias_maps' 'pcre:/etc/postfix/regexp'
fi
}