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entrypoint: no link followed at the DMARC maps (audit I2)

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Security audit 2026-10-17, finding I2 (= M4), stage 0. drop_links listed
the outbound maps, sasldb2, the key tree and mail.log but not the three
DMARC maps that postfix-config.sh creates as root with `[ -e ] || : >`
when DMARC_REPORTS_ENABLE=true; -e is false for a dangling link and the
redirect follows it, and /data/postfix is the panel's. Now the three are in
drop_links, and both map loops refuse to create through a link
(`[ -e ] || [ -L ] || : >`).

e2e: TestStartsOnA28Data plants a dangling /data/postfix/dmarc_transport
with DMARC reports on and expects the "removing the symbolic link" line,
no file at the link's target, and a regular map. To be run on the server
with the stage.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
mix
2026-10-17 21:30:03 +03:00
co-authored by Claude Opus 5.5
parent a37aba6594
commit f2ef705470
5 changed files with 28 additions and 5 deletions
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build/entrypoint.sh
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@@ -91,6 +91,7 @@ drop_links /data/dkim /data/dkim.new /data/opendkim /data/sasl /data/postfix /da
/data/sasl/sasldb2 /data/postfix/queue \
/data/postfix/sender_login_maps /data/postfix/relay_domains \
/data/postfix/transport /data/postfix/relay_recipients /data/postfix/tls_policy \
/data/postfix/dmarc_recipients /data/postfix/dmarc_transport /data/postfix/dmarc_relay_domains \
/data/log/mail.log
# Restored backups or previously-created state may contain panel-owned files
# under /data; make sure they stay writable without disturbing anything that a