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fix: Ensure configs are sanitized for parsing (#3819)

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* chore: Detect missing final newline in configs read

These lines will be not be processed by `read`, emit a warning to raise awareness.

* fix: Ensure parsed config has final newline appended (when possible)

This functionality was handled in `accounts.sh` via a similar sed command (that the linked references also offer).

`printf` is better for this, no shellcheck comment required either.

We additionally don't attempt to modify files that are read-only.

* fix: Ensure parsed configs have CRLF to LF corrected (where possible)

Likewise, this runtime fix was only covering two config files. It now applies to all callers of this method.

* fix: Sanitize `postfix-master.cf` via helper

This feature should have been using the helper to avoid user error from their config updates accidentally introducing subtle breakage implicitly (due to CRLF or missing final newline).

* tests: Add test cases for new helpers

* tests:  `rm` is redundant when using `BATS_TEST_TMPDIR`

This temporary directory is created and removed implicitly. Even after a test failure.

* chore: Remove old `postfix-virtual.cf` migration logic

This was introduced in 2018, there should be no one needing to rely on this anymore?

* tests: Remove comment on sed failure concern

* chore: Add entry to `CHANGELOG.md`

* Apply suggestions from code review

Co-authored-by: Georg Lauterbach <44545919+georglauterbach@users.noreply.github.com>

---------

Co-authored-by: Georg Lauterbach <44545919+georglauterbach@users.noreply.github.com>
This commit is contained in:
Brennan Kinney 2024-01-26 10:28:26 +13:00 • committed by GitHub
parent 22c6daee32
commit 47f8d50beb
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7 changed files with 92 additions and 31 deletions
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5
target/scripts/helpers/aliases.sh
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@ -12,11 +12,6 @@ function _handle_postfix_virtual_config() {
local DATABASE_VIRTUAL=/tmp/docker-mailserver/postfix-virtual.cf
if [[ -f ${DATABASE_VIRTUAL} ]]; then
# fixing old virtual user file
if grep -q ",$" "${DATABASE_VIRTUAL}"; then
sed -i -e "s|, |,|g" -e "s|,$||g" "${DATABASE_VIRTUAL}"
fi
cp -f "${DATABASE_VIRTUAL}" /etc/postfix/virtual
else
_log 'debug' "'${DATABASE_VIRTUAL}' not provided - no mail alias/forward created"