From cf40041946626b105102e3dab2515d2ef2fb0506 Mon Sep 17 00:00:00 2001
From: Yves Fischer <yvesf-git@xapek.org>
Date: Mon, 26 Nov 2018 21:15:23 +0100
Subject: Implement logout

---
 src/request_handler/mod.rs   | 16 +++++++++++++---
 src/request_handler/views.rs | 15 ++++++++++++++-
 2 files changed, 27 insertions(+), 4 deletions(-)

(limited to 'src/request_handler')

diff --git a/src/request_handler/mod.rs b/src/request_handler/mod.rs
index 72e9142..6812bb4 100644
--- a/src/request_handler/mod.rs
+++ b/src/request_handler/mod.rs
@@ -13,6 +13,7 @@ use std::cell::RefCell;
 use time;
 use http::{Request, Response, StatusCode, Method};
 use http::response::Builder;
+use http::header::SET_COOKIE;
 use tokio::prelude::*;
 use horrorshow;
 use cookie::{Cookie, CookieBuilder};
@@ -141,18 +142,24 @@ fn login<'a>(state: &super::ApplicationState, req: &Request<Bytes>, path_rest: &
     }
 }
 
-// unimplemented
 fn logout<'a>(state: &super::ApplicationState, req: &Request<Bytes>, path_rest: &'a str,
 ) -> Response<String> {
     let header_infos = match parse_header_infos(req) {
         Ok(infos) => infos,
         Err(message) => return error_handler_internal(message),
     };
+
+    let cookie_delete = CookieBuilder::new(COOKIE_NAME, "")
+        .http_only(true)
+        .path("/")
+        .expires(time::at_utc(time::Timespec::new(0, 0)))
+        .finish();
+
     Response::builder().set_defaults()
-        .body(format!("Rest: {}", path_rest)).unwrap()
+        .header(SET_COOKIE, cookie_delete.to_string())
+        .body(views::logout()).unwrap()
 }
 
-
 fn check<'a>(state: &super::ApplicationState, req: &Request<Bytes>, path_rest: &'a str) -> Response<String> {
     let header_infos = match parse_header_infos(req) {
         Ok(infos) => infos,
@@ -180,6 +187,9 @@ fn parse_header_infos(req: &Request<Bytes>) -> Result<HeaderExtract, String> {
     for header_value in req.headers().get_all(::http::header::COOKIE) {
         let value = header_value.to_str().or(Err("Failed to read cookie value"))?;
         for cookie_part in value.split("; ") {
+            if cookie_part.is_empty() {
+                continue;
+            }
             let cookie = Cookie::parse(cookie_part).or(Err("Failed to parse cookie value"))?;
             cookies.push(cookie);
         }
diff --git a/src/request_handler/views.rs b/src/request_handler/views.rs
index 1a239a4..bdd7999 100644
--- a/src/request_handler/views.rs
+++ b/src/request_handler/views.rs
@@ -61,6 +61,9 @@ pub(in super) fn login_is_logged_in() -> String {
         h1(id = "heading") {
             : "Currently logged in"
         }
+        a(href="logout") {
+            : "Go to logout";
+        }
     })
 }
 
@@ -102,7 +105,6 @@ pub(in super) fn login_auth_success(redirect: &String) -> String {
     })
 }
 
-
 pub(in super) fn login_auth_fail() -> String {
     render_base_template("Login failed", box_html! {
         h1(id = "heading") {
@@ -112,4 +114,15 @@ pub(in super) fn login_auth_fail() -> String {
             : "Try again... "
         }
     })
+}
+
+pub(in super) fn logout() -> String {
+    render_base_template("Logout", box_html! {
+        h1(id = "heading") {
+            : "Logout applied"
+        }
+        a(href="login") {
+            : "go to login again..."
+        }
+    })
 }
\ No newline at end of file
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