260 lines
9.6 KiB
Rust
260 lines
9.6 KiB
Rust
/*
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* Copyright (c) 2023 Stalwart Labs Ltd.
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*
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* This file is part of Stalwart Mail Server.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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* in the LICENSE file at the top-level directory of this distribution.
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* You can be released from the requirements of the AGPLv3 license by
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* purchasing a commercial license. Please contact licensing@stalw.art
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* for more details.
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*/
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use std::time::Duration;
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use crate::core::eval::*;
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use utils::{
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config::{
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if_block::IfBlock,
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utils::{AsKey, ConstantValue, NoConstants, ParseValue},
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Config,
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},
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expr::{Constant, Variable},
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};
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use super::{
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map_expr_token, AddressMatch, AggregateFrequency, AggregateReport, Report, ReportAnalysis,
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ReportConfig,
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};
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pub trait ConfigReport {
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fn parse_reports(&self) -> super::Result<ReportConfig>;
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fn parse_report(
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&self,
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id: &str,
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default_hostname: &str,
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available_keys: &[u32],
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) -> super::Result<Report>;
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fn parse_aggregate_report(
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&self,
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id: &str,
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default_hostname: &str,
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available_keys: &[u32],
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) -> super::Result<AggregateReport>;
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}
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impl ConfigReport for Config {
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fn parse_reports(&self) -> super::Result<ReportConfig> {
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let sender_envelope_keys = &[
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V_SENDER,
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V_SENDER_DOMAIN,
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V_PRIORITY,
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V_AUTHENTICATED_AS,
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V_LISTENER,
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V_REMOTE_IP,
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V_LOCAL_IP,
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];
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let rcpt_envelope_keys = &[
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V_SENDER,
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V_SENDER_DOMAIN,
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V_PRIORITY,
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V_REMOTE_IP,
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V_LOCAL_IP,
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V_RECIPIENT_DOMAIN,
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];
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let mut addresses = Vec::new();
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for address in self.properties::<AddressMatch>("report.analysis.addresses") {
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addresses.push(address?.1);
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}
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let default_hostname = self.value_require("server.hostname")?;
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Ok(ReportConfig {
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dkim: self.parse_report("dkim", default_hostname, sender_envelope_keys)?,
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spf: self.parse_report("spf", default_hostname, sender_envelope_keys)?,
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dmarc: self.parse_report("dmarc", default_hostname, sender_envelope_keys)?,
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dmarc_aggregate: self.parse_aggregate_report(
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"dmarc",
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default_hostname,
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sender_envelope_keys,
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)?,
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tls: self.parse_aggregate_report("tls", default_hostname, rcpt_envelope_keys)?,
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path: self.property_require("report.path")?,
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submitter: self
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.parse_if_block("report.submitter", |name| {
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map_expr_token::<NoConstants>(name, &[V_RECIPIENT_DOMAIN])
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})?
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.unwrap_or_else(|| IfBlock::new(default_hostname.to_string())),
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hash: self
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.parse_if_block("report.hash", |name| {
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map_expr_token::<NoConstants>(name, sender_envelope_keys)
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})?
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.unwrap_or_else(|| IfBlock::new(32)),
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analysis: ReportAnalysis {
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addresses,
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forward: self.property("report.analysis.forward")?.unwrap_or(false),
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store: self.property("report.analysis.store")?,
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report_id: 0.into(),
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},
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})
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}
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fn parse_report(
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&self,
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id: &str,
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default_hostname: &str,
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available_keys: &[u32],
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) -> super::Result<Report> {
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Ok(Report {
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name: self
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.parse_if_block(("report", id, "from-name"), |name| {
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map_expr_token::<NoConstants>(name, available_keys)
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})?
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.unwrap_or_else(|| IfBlock::new("Mail Delivery Subsystem".to_string())),
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address: self
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.parse_if_block(("report", id, "from-address"), |name| {
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map_expr_token::<NoConstants>(name, available_keys)
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})?
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.unwrap_or_else(|| IfBlock::new(format!("MAILER-DAEMON@{default_hostname}"))),
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subject: self
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.parse_if_block(("report", id, "subject"), |name| {
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map_expr_token::<NoConstants>(name, available_keys)
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})?
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.unwrap_or_else(|| IfBlock::new(format!("{} Report", id.to_ascii_uppercase()))),
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sign: self
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.parse_if_block(("report", id, "sign"), |name| {
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map_expr_token::<NoConstants>(name, available_keys)
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})?
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.unwrap_or_default(),
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send: self
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.parse_if_block(("report", id, "send"), |name| {
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map_expr_token::<Duration>(name, available_keys)
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})?
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.unwrap_or_default(),
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})
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}
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fn parse_aggregate_report(
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&self,
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id: &str,
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default_hostname: &str,
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available_keys: &[u32],
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) -> super::Result<AggregateReport> {
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let rcpt_envelope_keys = &[V_RECIPIENT_DOMAIN];
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Ok(AggregateReport {
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name: self
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.parse_if_block(("report", id, "aggregate.from-name"), |name| {
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map_expr_token::<NoConstants>(name, rcpt_envelope_keys)
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})?
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.unwrap_or_else(|| {
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IfBlock::new(format!("{} Aggregate Report", id.to_ascii_uppercase()))
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}),
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address: self
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.parse_if_block(("report", id, "aggregate.from-address"), |name| {
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map_expr_token::<NoConstants>(name, rcpt_envelope_keys)
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})?
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.unwrap_or_else(|| IfBlock::new(format!("noreply-{id}@{default_hostname}"))),
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org_name: self
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.parse_if_block(("report", id, "aggregate.org-name"), |name| {
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map_expr_token::<NoConstants>(name, rcpt_envelope_keys)
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})?
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.unwrap_or_default(),
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contact_info: self
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.parse_if_block(("report", id, "aggregate.contact-info"), |name| {
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map_expr_token::<NoConstants>(name, rcpt_envelope_keys)
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})?
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.unwrap_or_default(),
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send: self
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.parse_if_block(("report", id, "aggregate.send"), |name| {
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map_expr_token::<AggregateFrequency>(name, available_keys)
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})?
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.unwrap_or_else(|| IfBlock::new(AggregateFrequency::Never)),
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sign: self
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.parse_if_block(("report", id, "aggregate.sign"), |name| {
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map_expr_token::<NoConstants>(name, rcpt_envelope_keys)
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})?
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.unwrap_or_default(),
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max_size: self
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.parse_if_block(("report", id, "aggregate.max-size"), |name| {
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map_expr_token::<NoConstants>(name, rcpt_envelope_keys)
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})?
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.unwrap_or_else(|| IfBlock::new(25 * 1024 * 1024)),
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})
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}
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}
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impl ParseValue for AggregateFrequency {
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fn parse_value(key: impl AsKey, value: &str) -> super::Result<Self> {
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match value {
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"daily" | "day" => Ok(AggregateFrequency::Daily),
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"hourly" | "hour" => Ok(AggregateFrequency::Hourly),
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"weekly" | "week" => Ok(AggregateFrequency::Weekly),
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"never" | "disable" | "false" => Ok(AggregateFrequency::Never),
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_ => Err(format!(
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"Invalid aggregate frequency value {:?} for key {:?}.",
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value,
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key.as_key()
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)),
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}
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}
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}
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impl From<AggregateFrequency> for Constant {
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fn from(value: AggregateFrequency) -> Self {
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match value {
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AggregateFrequency::Never => 0.into(),
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AggregateFrequency::Hourly => 2.into(),
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AggregateFrequency::Daily => 3.into(),
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AggregateFrequency::Weekly => 4.into(),
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}
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}
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}
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impl<'x> TryFrom<Variable<'x>> for AggregateFrequency {
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type Error = ();
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fn try_from(value: Variable<'x>) -> Result<Self, Self::Error> {
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match value {
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Variable::Integer(0) => Ok(AggregateFrequency::Never),
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Variable::Integer(2) => Ok(AggregateFrequency::Hourly),
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Variable::Integer(3) => Ok(AggregateFrequency::Daily),
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Variable::Integer(4) => Ok(AggregateFrequency::Weekly),
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_ => Err(()),
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}
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}
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}
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impl ConstantValue for AggregateFrequency {}
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impl ParseValue for AddressMatch {
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fn parse_value(key: impl AsKey, value: &str) -> super::Result<Self> {
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if let Some(value) = value.strip_prefix('*').map(|v| v.trim()) {
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if !value.is_empty() {
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return Ok(AddressMatch::EndsWith(value.to_lowercase()));
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}
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} else if let Some(value) = value.strip_suffix('*').map(|v| v.trim()) {
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if !value.is_empty() {
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return Ok(AddressMatch::StartsWith(value.to_lowercase()));
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}
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} else if value.contains('@') {
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return Ok(AddressMatch::Equals(value.trim().to_lowercase()));
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}
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Err(format!(
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"Invalid address match value {:?} for key {:?}.",
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value,
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key.as_key()
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))
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}
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}
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