109 lines
3.4 KiB
Rust
109 lines
3.4 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 sieve::{runtime::Variable, Context};
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use unicode_security::MixedScript;
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pub fn fn_is_ascii<'x>(_: &'x Context<'x>, v: Vec<Variable>) -> Variable {
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match &v[0] {
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Variable::String(s) => s.chars().all(|c| c.is_ascii()),
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Variable::Integer(_) | Variable::Float(_) => true,
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Variable::Array(a) => a.iter().all(|v| match v {
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Variable::String(s) => s.chars().all(|c| c.is_ascii()),
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_ => true,
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}),
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}
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.into()
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}
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pub fn fn_has_zwsp<'x>(_: &'x Context<'x>, v: Vec<Variable>) -> Variable {
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match &v[0] {
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Variable::String(s) => s.chars().any(|c| c.is_zwsp()),
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Variable::Array(a) => a.iter().any(|v| match v {
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Variable::String(s) => s.chars().any(|c| c.is_zwsp()),
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_ => true,
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}),
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Variable::Integer(_) | Variable::Float(_) => false,
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}
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.into()
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}
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pub fn fn_has_obscured<'x>(_: &'x Context<'x>, v: Vec<Variable>) -> Variable {
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match &v[0] {
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Variable::String(s) => s.chars().any(|c| c.is_obscured()),
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Variable::Array(a) => a.iter().any(|v| match v {
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Variable::String(s) => s.chars().any(|c| c.is_obscured()),
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_ => true,
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}),
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Variable::Integer(_) | Variable::Float(_) => false,
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}
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.into()
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}
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trait CharUtils {
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fn is_zwsp(&self) -> bool;
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fn is_obscured(&self) -> bool;
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}
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impl CharUtils for char {
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fn is_zwsp(&self) -> bool {
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matches!(
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self,
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'\u{200B}' | '\u{200C}' | '\u{200D}' | '\u{FEFF}' | '\u{00AD}'
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)
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}
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fn is_obscured(&self) -> bool {
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matches!(
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self,
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'\u{200B}'..='\u{200F}'
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| '\u{2028}'..='\u{202F}'
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| '\u{205F}'..='\u{206F}'
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| '\u{FEFF}'
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)
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}
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}
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pub fn fn_cure_text<'x>(_: &'x Context<'x>, v: Vec<Variable>) -> Variable {
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decancer::cure(v[0].to_string().as_ref(), decancer::Options::default())
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.map(String::from)
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.unwrap_or_default()
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.into()
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}
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pub fn fn_unicode_skeleton<'x>(_: &'x Context<'x>, v: Vec<Variable>) -> Variable {
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unicode_security::skeleton(v[0].to_string().as_ref())
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.collect::<String>()
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.into()
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}
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pub fn fn_is_single_script<'x>(_: &'x Context<'x>, v: Vec<Variable>) -> Variable {
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let text = v[0].to_string();
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if !text.is_empty() {
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text.as_ref().is_single_script()
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} else {
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true
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}
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.into()
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}
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