create new type SafeString to sanitise and store unsafe html
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@ -42,6 +42,7 @@ mod models;
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mod schema;
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mod routes;
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mod utils;
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mod safe_string;
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lazy_static! {
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pub static ref BASE_URL: String = env::var("BASE_URL")
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103
src/safe_string.rs
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103
src/safe_string.rs
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@ -0,0 +1,103 @@
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use ammonia::clean;
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use serde::{self, Serialize, Deserialize,
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Serializer, Deserializer, de::Visitor};
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use std::{fmt::{self, Display},
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borrow::Borrow, io::Write,
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ops::Deref};
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use diesel::{self, deserialize::Queryable,
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types::ToSql,
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sql_types::Text,
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serialize::{self, Output}};
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#[derive(Debug,Clone,AsExpression,FromSqlRow)]
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#[sql_type = "Text"]
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pub struct SafeString{
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value: String,
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}
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impl SafeString{
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pub fn new(value: &str) -> Self {
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SafeString{
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value: clean(&value),
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}
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}
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pub fn set(&mut self, value: &str) {
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self.value = clean(value);
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}
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pub fn get(&self) -> &String {
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&self.value
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}
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}
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impl Serialize for SafeString {
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
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where S: Serializer, {
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serializer.serialize_str(&self.value)
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}
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}
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struct SafeStringVisitor;
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impl<'de> Visitor<'de> for SafeStringVisitor {
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type Value = SafeString;
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fn expecting(&self, formatter:&mut fmt::Formatter) -> fmt::Result {
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formatter.write_str("a string")
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}
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fn visit_str<E>(self, value: &str) -> Result<SafeString, E>
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where E: serde::de::Error{
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Ok(SafeString::new(value))
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}
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}
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impl<'de> Deserialize<'de> for SafeString {
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fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
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where D: Deserializer<'de>, {
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Ok(
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deserializer.deserialize_string(SafeStringVisitor)?
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)
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}
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}
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impl Queryable<Text, diesel::pg::Pg> for SafeString {
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type Row = String;
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fn build(value: Self::Row) -> Self {
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SafeString::new(&value)
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}
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}
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impl<DB> ToSql<diesel::sql_types::Text, DB> for SafeString
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where
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DB: diesel::backend::Backend,
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str: ToSql<diesel::sql_types::Text, DB>, {
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fn to_sql<W: Write>(&self, out: &mut Output<W, DB>) -> serialize::Result {
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str::to_sql(&self.value, out)
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}
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}
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impl Borrow<str> for SafeString {
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fn borrow(&self) -> &str {
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&self.value
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}
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}
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impl Display for SafeString {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "{}", self.value)
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}
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}
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impl Deref for SafeString {
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type Target = str;
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fn deref(&self) -> &str {
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&self.value
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}
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}
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impl AsRef<str> for SafeString {
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fn as_ref(&self) -> &str {
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&self.value
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}
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}
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