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|
use std::{cmp::Ordering, net::IpAddr, vec::IntoIter};
use mail_auth::IpLookupStrategy;
use store::{Deserialize, Rows, Value};
use trc::AddContext;
use crate::Core;
use super::*;
impl Core {
pub(crate) async fn eval_fnc<'x>(
&self,
fnc_id: u32,
params: Vec<Variable<'x>>,
session_id: u64,
) -> trc::Result<Variable<'x>> {
let mut params = FncParams::new(params);
match fnc_id {
F_IS_LOCAL_DOMAIN => {
let directory = params.next_as_string();
let domain = params.next_as_string();
self.get_directory_or_default(directory.as_ref(), session_id)
.is_local_domain(domain.as_ref())
.await
.caused_by(trc::location!())
.map(|v| v.into())
}
F_IS_LOCAL_ADDRESS => {
let directory = params.next_as_string();
let address = params.next_as_string();
self.get_directory_or_default(directory.as_ref(), session_id)
.rcpt(address.as_ref())
.await
.caused_by(trc::location!())
.map(|v| v.into())
}
F_KEY_GET => {
let store = params.next_as_string();
let key = params.next_as_string();
self.get_lookup_store(store.as_ref(), session_id)
.key_get::<VariableWrapper>(key.into_owned().into_bytes())
.await
.map(|value| value.map(|v| v.into_inner()).unwrap_or_default())
.caused_by(trc::location!())
}
F_KEY_EXISTS => {
let store = params.next_as_string();
let key = params.next_as_string();
self.get_lookup_store(store.as_ref(), session_id)
.key_exists(key.into_owned().into_bytes())
.await
.caused_by(trc::location!())
.map(|v| v.into())
}
F_KEY_SET => {
let store = params.next_as_string();
let key = params.next_as_string();
let value = params.next_as_string();
self.get_lookup_store(store.as_ref(), session_id)
.key_set(
key.into_owned().into_bytes(),
value.into_owned().into_bytes(),
None,
)
.await
.map(|_| true)
.caused_by(trc::location!())
.map(|v| v.into())
}
F_COUNTER_INCR => {
let store = params.next_as_string();
let key = params.next_as_string();
let value = params.next_as_integer();
self.get_lookup_store(store.as_ref(), session_id)
.counter_incr(key.into_owned().into_bytes(), value, None, true)
.await
.map(Variable::Integer)
.caused_by(trc::location!())
}
F_COUNTER_GET => {
let store = params.next_as_string();
let key = params.next_as_string();
self.get_lookup_store(store.as_ref(), session_id)
.counter_get(key.into_owned().into_bytes())
.await
.map(Variable::Integer)
.caused_by(trc::location!())
}
F_DNS_QUERY => self.dns_query(params).await,
F_SQL_QUERY => self.sql_query(params, session_id).await,
_ => Ok(Variable::default()),
}
}
async fn sql_query<'x>(
&self,
mut arguments: FncParams<'x>,
session_id: u64,
) -> trc::Result<Variable<'x>> {
let store = self.get_lookup_store(arguments.next_as_string().as_ref(), session_id);
let query = arguments.next_as_string();
if query.is_empty() {
return Err(trc::EventType::Eval(trc::EvalEvent::Error)
.into_err()
.details("Empty query string"));
}
// Obtain arguments
let arguments = match arguments.next() {
Variable::Array(l) => l.into_iter().map(to_store_value).collect(),
v => vec![to_store_value(v)],
};
// Run query
if query
.as_bytes()
.get(..6)
.map_or(false, |q| q.eq_ignore_ascii_case(b"SELECT"))
{
let mut rows = store
.query::<Rows>(&query, arguments)
.await
.caused_by(trc::location!())?;
Ok(match rows.rows.len().cmp(&1) {
Ordering::Equal => {
let mut row = rows.rows.pop().unwrap().values;
match row.len().cmp(&1) {
Ordering::Equal if !matches!(row.first(), Some(Value::Null)) => {
row.pop().map(into_variable).unwrap()
}
Ordering::Less => Variable::default(),
_ => {
Variable::Array(row.into_iter().map(into_variable).collect::<Vec<_>>())
}
}
}
Ordering::Less => Variable::default(),
Ordering::Greater => rows
.rows
.into_iter()
.map(|r| {
Variable::Array(r.values.into_iter().map(into_variable).collect::<Vec<_>>())
})
.collect::<Vec<_>>()
.into(),
})
} else {
store
.query::<usize>(&query, arguments)
.await
.caused_by(trc::location!())
.map(|v| v.into())
}
}
async fn dns_query<'x>(&self, mut arguments: FncParams<'x>) -> trc::Result<Variable<'x>> {
let entry = arguments.next_as_string();
let record_type = arguments.next_as_string();
if record_type.eq_ignore_ascii_case("ip") {
self.smtp
.resolvers
.dns
.ip_lookup(entry.as_ref(), IpLookupStrategy::Ipv4thenIpv6, 10)
.await
.map_err(|err| trc::Error::from(err).caused_by(trc::location!()))
.map(|result| {
result
.iter()
.map(|ip| Variable::from(ip.to_string()))
.collect::<Vec<_>>()
.into()
})
} else if record_type.eq_ignore_ascii_case("mx") {
self.smtp
.resolvers
.dns
.mx_lookup(entry.as_ref())
.await
.map_err(|err| trc::Error::from(err).caused_by(trc::location!()))
.map(|result| {
result
.iter()
.flat_map(|mx| {
mx.exchanges.iter().map(|host| {
Variable::String(
host.strip_suffix('.')
.unwrap_or(host.as_str())
.to_string()
.into(),
)
})
})
.collect::<Vec<_>>()
.into()
})
} else if record_type.eq_ignore_ascii_case("txt") {
self.smtp
.resolvers
.dns
.txt_raw_lookup(entry.as_ref())
.await
.map_err(|err| trc::Error::from(err).caused_by(trc::location!()))
.map(|result| Variable::from(String::from_utf8(result).unwrap_or_default()))
} else if record_type.eq_ignore_ascii_case("ptr") {
self.smtp
.resolvers
.dns
.ptr_lookup(entry.parse::<IpAddr>().map_err(|err| {
trc::EventType::Eval(trc::EvalEvent::Error)
.into_err()
.details("Failed to parse IP address")
.reason(err)
})?)
.await
.map_err(|err| trc::Error::from(err).caused_by(trc::location!()))
.map(|result| {
result
.iter()
.map(|host| Variable::from(host.to_string()))
.collect::<Vec<_>>()
.into()
})
} else if record_type.eq_ignore_ascii_case("ipv4") {
self.smtp
.resolvers
.dns
.ipv4_lookup(entry.as_ref())
.await
.map_err(|err| trc::Error::from(err).caused_by(trc::location!()))
.map(|result| {
result
.iter()
.map(|ip| Variable::from(ip.to_string()))
.collect::<Vec<_>>()
.into()
})
} else if record_type.eq_ignore_ascii_case("ipv6") {
self.smtp
.resolvers
.dns
.ipv6_lookup(entry.as_ref())
.await
.map_err(|err| trc::Error::from(err).caused_by(trc::location!()))
.map(|result| {
result
.iter()
.map(|ip| Variable::from(ip.to_string()))
.collect::<Vec<_>>()
.into()
})
} else {
Ok(Variable::default())
}
}
}
struct FncParams<'x> {
params: IntoIter<Variable<'x>>,
}
impl<'x> FncParams<'x> {
pub fn new(params: Vec<Variable<'x>>) -> Self {
Self {
params: params.into_iter(),
}
}
pub fn next_as_string(&mut self) -> Cow<'x, str> {
self.params.next().unwrap().into_string()
}
pub fn next_as_integer(&mut self) -> i64 {
self.params.next().unwrap().to_integer().unwrap_or_default()
}
pub fn next(&mut self) -> Variable<'x> {
self.params.next().unwrap()
}
}
#[derive(Debug)]
struct VariableWrapper(Variable<'static>);
impl From<i64> for VariableWrapper {
fn from(value: i64) -> Self {
VariableWrapper(Variable::Integer(value))
}
}
impl Deserialize for VariableWrapper {
fn deserialize(bytes: &[u8]) -> trc::Result<Self> {
String::deserialize(bytes).map(|v| VariableWrapper(Variable::String(v.into())))
}
}
impl From<store::Value<'static>> for VariableWrapper {
fn from(value: store::Value<'static>) -> Self {
VariableWrapper(match value {
Value::Integer(v) => Variable::Integer(v),
Value::Bool(v) => Variable::Integer(v as i64),
Value::Float(v) => Variable::Float(v),
Value::Text(v) => Variable::String(v),
Value::Blob(v) => Variable::String(match v {
std::borrow::Cow::Borrowed(v) => String::from_utf8_lossy(v),
std::borrow::Cow::Owned(v) => String::from_utf8_lossy(&v).into_owned().into(),
}),
Value::Null => Variable::String("".into()),
})
}
}
impl VariableWrapper {
pub fn into_inner(self) -> Variable<'static> {
self.0
}
}
fn to_store_value(value: Variable) -> Value {
match value {
Variable::String(v) => Value::Text(v),
Variable::Integer(v) => Value::Integer(v),
Variable::Float(v) => Value::Float(v),
v => Value::Text(v.to_string().into_owned().into()),
}
}
fn into_variable(value: Value) -> Variable {
match value {
Value::Integer(v) => Variable::Integer(v),
Value::Bool(v) => Variable::Integer(i64::from(v)),
Value::Float(v) => Variable::Float(v),
Value::Text(v) => Variable::String(v),
Value::Blob(v) => Variable::String(
String::from_utf8(v.into_owned())
.unwrap_or_else(|err| String::from_utf8_lossy(err.as_bytes()).into_owned())
.into(),
),
Value::Null => Variable::default(),
}
}
|
