Add email validation

Cargo.lock

@@ -571,6 +571,12 @@ dependencies = [
  "unicode-normalization",
 ]
 
+[[package]]
+name = "if_chain"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb56e1aa765b4b4f3aadfab769793b7087bb03a4ea4920644a6d238e2df5b9ed"
+
 [[package]]
 name = "indexmap"
 version = "1.9.1"
@@ -809,6 +815,30 @@ version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "eb9f9e6e233e5c4a35559a617bf40a4ec447db2e84c20b55a6f83167b7e57872"
 
+[[package]]
+name = "proc-macro-error"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
+dependencies = [
+ "proc-macro-error-attr",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "version_check",
+]
+
+[[package]]
+name = "proc-macro-error-attr"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "version_check",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.40"
@@ -1184,6 +1214,33 @@ dependencies = [
  "serde_derive",
  "serde_json",
  "url",
+ "validator_derive",
+]
+
+[[package]]
+name = "validator_derive"
+version = "0.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ea7ed5e8cf2b6bdd64a6c4ce851da25388a89327b17b88424ceced6bd5017923"
+dependencies = [
+ "if_chain",
+ "lazy_static",
+ "proc-macro-error",
+ "proc-macro2",
+ "quote",
+ "regex",
+ "syn",
+ "validator_types",
+]
+
+[[package]]
+name = "validator_types"
+version = "0.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2ddf34293296847abfc1493b15c6e2f5d3cd19f57ad7d22673bf4c6278da329"
+dependencies = [
+ "proc-macro2",
+ "syn",
 ]
 
 [[package]]

Cargo.toml

@@ -10,6 +10,6 @@ actix-web = "4"
 rusqlite = { version = "0.27.0", features = ["chrono"] }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
-validator = "0.15.0"
+validator = { version = "0.15.0", features = ["derive"] }
 md5 = "0.7.0"
 chrono = "0.4.19"

src/comment.rs

@@ -1,5 +1,6 @@
 use chrono::NaiveDateTime;
 use serde::{Deserialize, Serialize};
+use validator::Validate;
 
 // Master comment type that is stored in database
 pub struct Comment {
@@ -33,9 +34,10 @@ pub struct CommentSend {
 }
 
 // Comment type received containing new comment data
-#[derive(Deserialize)]
+#[derive(Deserialize, Validate)]
 pub struct CommentReceive {
     pub author: Option<String>,
+    #[validate(email)]
     pub email: Option<String>,
     pub text: String,
 }

src/main.rs

@@ -6,6 +6,7 @@ pub use database::Database;
 
 use actix_web::{get, post, web, App, HttpResponse, HttpServer, Responder};
 use std::sync::Mutex;
+use validator::Validate;
 
 struct AppState {
     db: Mutex<Database>,
@@ -32,6 +33,9 @@ async fn post_comment(data: web::Data<AppState>, bytes: web::Bytes) -> impl Resp
                 Ok(comment) => comment,
                 Err(_) => return HttpResponse::BadRequest(),
             };
+            if comment.validate().is_err() {
+                return HttpResponse::BadRequest();
+            }
             db.create_comment(&comment.to_master()).unwrap();
             HttpResponse::Ok()
         }