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postfixadmin: fix db owner

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Robin Gloster 2021-08-23 20:16:23 +02:00 committed by Maximilian Bosch
parent 862dd4ef58
commit 8a0b6a42ee
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1 changed files with 38 additions and 4 deletions
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42
nixos/modules/services/mail/postfixadmin.nix
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@ -125,14 +125,48 @@ in
services.postgresql = mkIf localDB {
enable = true;
ensureDatabases = [ cfg.database.dbname ];
ensureUsers = [ {
name = cfg.database.username;
ensurePermissions = {
"DATABASE ${cfg.database.username}" = "ALL PRIVILEGES";
};
} ];
};
# The postgresql module doesn't currently support concepts like
# objects owners and extensions; for now we tack on what's needed
# here.
systemd.services.postfixadmin-postgres = let pgsql = config.services.postgresql; in mkIf localDB {
after = [ "postgresql.service" ];
bindsTo = [ "postgresql.service" ];
wantedBy = [ "multi-user.target" ];
path = [
pgsql.package
pkgs.utillinux
];
script = ''
set -eu
PSQL() {
psql --port=${toString pgsql.port} "$@"
}
PSQL -tAc "SELECT 1 FROM pg_database WHERE datname = '${cfg.database.dbname}'" | grep -q 1 || PSQL -tAc 'CREATE DATABASE "${cfg.database.dbname}" OWNER "${cfg.database.username}"'
current_owner=$(PSQL -tAc "SELECT pg_catalog.pg_get_userbyid(datdba) FROM pg_catalog.pg_database WHERE datname = '${cfg.database.dbname}'")
if [[ "$current_owner" != "${cfg.database.username}" ]]; then
PSQL -tAc 'ALTER DATABASE "${cfg.database.dbname}" OWNER TO "${cfg.database.username}"'
if [[ -e "${config.services.postgresql.dataDir}/.reassigning_${cfg.database.dbname}" ]]; then
echo "Reassigning ownership of database ${cfg.database.dbname} to user ${cfg.database.username} failed on last boot. Failing..."
exit 1
fi
touch "${config.services.postgresql.dataDir}/.reassigning_${cfg.database.dbname}"
PSQL "${cfg.database.dbname}" -tAc "REASSIGN OWNED BY \"$current_owner\" TO \"${cfg.database.username}\""
rm "${config.services.postgresql.dataDir}/.reassigning_${cfg.database.dbname}"
fi
'';
serviceConfig = {
User = pgsql.superUser;
Type = "oneshot";
RemainAfterExit = true;
};
};
users.users.${user} = mkIf localDB {
group = user;