matthew
/
locality
1
0
Fork 0
Code Issues 10 Pull Requests Packages Projects Releases Wiki Activity

Compare commits

base: matthew:54350e3919e63d0c2e924e73603e50967e89c86e
Branches Tags
matthew:main
..
compare: matthew:d18ce42938eb995c8b73a79770aae5fbccdc69a1
Branches Tags
matthew:main

No commits in common. "54350e3919e63d0c2e924e73603e50967e89c86e" and "d18ce42938eb995c8b73a79770aae5fbccdc69a1" have entirely different histories.
54350e3919 ... d18ce42938

16 changed files with 83 additions and 671 deletions
Show Stats Expand all files Collapse all files

2
.cargo/config.toml
View File

@ -1,2 +1,2 @@
[env] [env]
LOCALITY_STATIC_FILE_PATH = { value = "static", relative = true } LOCALHUB_STATIC_FILE_PATH = { value = "static", relative = true }

13
Cargo.toml
View File

@ -1,5 +1,5 @@
[package] [package]
name = "locality" name = "localhub"
version = "0.1.0" version = "0.1.0"
edition = "2021" edition = "2021"
@ -7,12 +7,11 @@ edition = "2021"
[dependencies] [dependencies]
tokio = { version = "1", features = ["rt-multi-thread"]} tokio = { version = "1", features = ["rt-multi-thread"]}
axum = { version = "0.7", default_features = false, features = ["http1", "form", "tokio"] } axum = "0.7"
askama = "0.12" askama = "0.12"
askama_axum = "0.4" askama_axum = "0.4"
tower-http = { version = "0.5", features = ["fs"] } tower-http = { version = "0.5", features = ["fs"] }
deadpool-postgres = { version = "0.12", features = ["rt_tokio_1"] } r2d2_postgres = "0.18"
tokio-postgres = { version = "0.7", features = ["with-chrono-0_4"] } deadpool-r2d2 = {version = "0.3", features = ["rt_tokio_1"]}
thiserror = "1.0" deadpool = "0.10"
argon2 = { version = "0.5", features = ["password-hash", "std"] } thiserror = "1.0"
serde = { version = "1.0", features = ["derive"] }

69
src/admin.rs
View File

@ -1,69 +0,0 @@
use {
crate::{
authentication::{authenticate_user, Password},
db::Database,
error::Error,
},
askama::Template,
askama_axum::{IntoResponse, Response},
axum::{
extract::State,
routing::{get, post},
Form, Router,
},
serde::Deserialize,
};
pub fn routes() -> Router<Database> {
Router::new()
.route("/", get(root))
.route("/create_initial_admin_user", post(create_first_admin_user))
}
#[derive(Template)]
#[template(path = "admin/create_first_user.html")]
struct CreateFirstUserTemplate {}
#[derive(Template)]
#[template(path = "admin/first_login.html")]
struct FirstLoginTemplate {}
#[derive(Template)]
#[template(path = "admin/index.html")]
struct IndexTemplate {}
async fn root(State(db): State<Database>) -> Result<Response, Error> {
Ok(if !db.has_admin_users().await? {
CreateFirstUserTemplate {}.into_response()
} else {
IndexTemplate {}.into_response()
})
}
#[derive(Deserialize)]
struct CreateFirstUserParameters {
real_name: String,
email: String,
password: String,
}
async fn create_first_admin_user(
State(db): State<Database>,
Form(params): Form<CreateFirstUserParameters>,
) -> Result<FirstLoginTemplate, Error> {
let user = db
.create_first_admin_user(
&params.real_name,
&params.email,
&Password::new(&params.password)?.into(),
)
.await?;
if let Some(_user) = authenticate_user(&db, user, &params.password).await? {
// Store cookie and display configuration page
todo!();
} else {
// Report failure
todo!();
}
Ok(FirstLoginTemplate {})
}

7
src/app.rs
View File

@ -1,7 +1,7 @@
use { use {
crate::db::Database, crate::db::Database,
askama::Template, askama::Template,
axum::{routing::get, Router}, axum::{extract::State, routing::get, Router},
}; };
pub fn routes() -> Router<Database> { pub fn routes() -> Router<Database> {
@ -14,6 +14,7 @@ struct IndexTemplate<'a> {
title: &'a str, title: &'a str,
} }
async fn root<'a>() -> IndexTemplate<'a> { async fn root<'a>(State(database): State<Database>) -> IndexTemplate<'a> {
IndexTemplate { title: "Locality" } println!("Found {} users", database.log_num_users().await);
IndexTemplate { title: "LocalHub" }
} }

95
src/authentication.rs
View File

@ -1,95 +0,0 @@
use {
crate::{db, db::Database},
argon2::{
password_hash::{
rand_core::OsRng, PasswordHash, PasswordHasher, PasswordVerifier, SaltString,
},
Argon2,
},
std::ops::Deref,
};
#[derive(thiserror::Error, Debug)]
pub enum AuthenticationError {
#[error("Could not get password hash from database: {}", .0.to_string())]
DatabaseError(#[from] db::Error),
#[error("{}", .0.to_string())]
HashError(#[from] argon2::password_hash::Error),
}
#[derive(Debug)]
pub struct AuthenticatedUser {
user: db::User,
}
impl Deref for AuthenticatedUser {
type Target = db::User;
fn deref(&self) -> &db::User {
&self.user
}
}
#[derive(Debug)]
pub struct AuthenticatedAdminUser {
user: db::User,
}
impl Deref for AuthenticatedAdminUser {
type Target = db::User;
fn deref(&self) -> &db::User {
&self.user
}
}
pub struct Password {
hash: String,
}
impl Password {
pub fn new(password: &str) -> Result<Password, AuthenticationError> {
let salt = SaltString::generate(&mut OsRng);
let argon2 = Argon2::default();
Ok(Password {
hash: argon2
.hash_password(password.as_bytes(), &salt)?
.to_string(),
})
}
pub fn check(&self, password: &str) -> Result<bool, AuthenticationError> {
let hash = PasswordHash::new(&self.hash)?;
Ok(Argon2::default()
.verify_password(password.as_bytes(), &hash)
.is_ok())
}
}
impl From<db::PasswordHash> for Password {
fn from(password: db::PasswordHash) -> Self {
Password {
hash: password.to_string(),
}
}
}
impl From<Password> for db::PasswordHash {
fn from(password: Password) -> Self {
db::PasswordHash(password.hash)
}
}
pub async fn authenticate_user(
db: &Database,
user: db::User,
supplied_password: &str,
) -> Result<Option<AuthenticatedUser>, AuthenticationError> {
let password: Password = db.get_password_for_user(&user).await?.into();
Ok(if password.check(supplied_password)? {
Some(AuthenticatedUser { user })
} else {
None
})
}

2
src/config.rs
View File

@ -1,6 +1,6 @@
use {std::env, thiserror::Error}; use {std::env, thiserror::Error};
const ENV_VAR_PREFIX: &str = "LOCALITY_"; const ENV_VAR_PREFIX: &str = "LOCALHUB_";
#[derive(Error, Debug)] #[derive(Error, Debug)]
pub enum Error { pub enum Error {

47
src/db.rs Normal file
View File

@ -0,0 +1,47 @@
use {
deadpool, deadpool_r2d2::Runtime, thiserror::Error,
};
type PgManager = deadpool_r2d2::Manager<
r2d2_postgres::PostgresConnectionManager<r2d2_postgres::postgres::NoTls>,
>;
type PgPool = deadpool_r2d2::Pool<PgManager>;
#[derive(Error, Debug)]
pub enum Error {
#[error("Could not initialize DB connection pool.")]
ConnectionPoolError(#[from] deadpool::managed::BuildError),
#[error("Error with Postgres database")]
PostrgesError(#[from] r2d2_postgres::postgres::Error)
}
#[derive(Clone)]
pub struct Database {
pg_pool: PgPool,
}
impl Database {
pub fn create_pool(connection_url: &str, max_size: usize) -> Result<Database, Error> {
let pg_config: r2d2_postgres::postgres::Config = connection_url.parse()?;
let r2d2_manager = r2d2_postgres::PostgresConnectionManager::new(
pg_config,
r2d2_postgres::postgres::NoTls,
);
let manager = PgManager::new(r2d2_manager, Runtime::Tokio1);
let pg_pool = PgPool::builder(manager).max_size(max_size).build()?;
Ok(Database { pg_pool })
}
pub async fn log_num_users(&self) -> usize {
self.pg_pool
.get()
.await
.unwrap()
.interact(|conn| {
let results = conn.query("SELECT * FROM users;", &[]).unwrap();
results.len()
})
.await
.unwrap()
}
}

244
src/db/migrations.rs
View File

@ -1,244 +0,0 @@
//! Database schema migrations and the code to manage them.
//!
//! - [MIGRATIONS] stores a list of schema migrations defined in SQL.
//!
//! - [CURRENT_VERSION] is the schema version used by the current app
//! version.
//!
//! - [get_db_version()] returns the schema version of the database
//! itself.
//! - [migrate_to_current_version()] Applies whatever migrations are
//! needed to that the database schema version (as returned by
//! [get_db_version()]) matches [CURRENT_VERSION].
use super::{Database, Error};
/// Defines a database schema migration
#[derive(Debug)]
struct Migration {
/// The schema version that `up` will migrate to.
version: i32,
/// SQL to migrate to [version](Migration::version) from the
/// previous schema version.
///
/// May contain multiple SQL statements: they will be wrapped in a
/// `DO $$BEGIN`...`END$$;` block when executed.
up: &'static str,
/// SQL to migrate from [version](Migration::version) to the
/// previous schema version.
///
/// May contain multiple SQL statements: they will be wrapped in a
/// `DO $$BEGIN`...`END$$;` block when executed.
down: &'static str,
}
/// A list of all the schema migrations.
///
/// The [version](Migration::version) field should always correspond to the
/// [Migration]'s position in the list, starting at 0 and working up
/// sequentially.
///
/// New versions should normally only ever add to the end of this
/// list, never change or add things in the middle or at the
/// beginning.
static MIGRATIONS: &[Migration] = &[
Migration {
version: 0,
up: r#"
CREATE TABLE users (
id SERIAL PRIMARY KEY,
real_name TEXT NOT NULL,
email TEXT UNIQUE NOT NULL,
-- 43 characters is enought to base64-encode 32 bits
password_salt CHARACTER(43) NOT NULL,
password_hash CHARACTER(43) NOT NULL);"#,
down: r#"DROP TABLE users;"#,
},
Migration {
version: 1,
up: r#"
CREATE TABLE admin_users (
id INTEGER PRIMARY KEY REFERENCES users);"#,
down: r#"
DROP TABLE admin_users;"#,
},
Migration {
// The original password_salt and password_hash fields were
// never used, and when I implemented passwords I ended up
// storing both in a single row.
version: 2,
up: r#"
ALTER TABLE users DROP COLUMN IF EXISTS password_salt;
ALTER TABLE users DROP COLUMN IF EXISTS password_hash;
ALTER TABLE users ADD COLUMN password TEXT NOT NULL;"#,
down: "ALTER TABLE users DROP COLUMN password;"
}
];
/// The current schema version. Normally this will be the
/// [version](Migration::version) of the list item in [MIGRATIONS].
///
/// This is the the current version *as specified by the
/// application*. It may not be the actual schema of the database. If
/// it is not the current database schema, then running
/// [migrate_to_current_version()] will migrate the database to this
/// version.
static CURRENT_VERSION: i32 = 2;
/// If the database is not already using the most recent schema, apply
/// one migration to bring it to the next newest version.
///
/// E.g. If [CURRENT_VERSION] is 10 but the database is on version 4,
/// then running this function will apply [Migration] 5 to bring the
/// database up to schema version 5.
async fn migrate_up(db: &Database) -> Result<i32, Error> {
let current_version = get_db_version(db).await?;
if let Some(migration) = MIGRATIONS.iter().find(|m| m.version > current_version) {
let client = db.connection_pool.get().await?;
client
.execute(&format!("DO $$BEGIN\n{}\nEND$$;", migration.up), &[])
.await?;
client
.execute(
"UPDATE migration_info SET migration_version = $1;",
&[&migration.version],
)
.await?;
Ok(migration.version)
} else {
eprintln!("ERROR: Attempted to migrate up past last migration.");
Ok(current_version)
}
}
/// Revert back to the previous schema version by running the
/// [down](Migration::down) SQL of the current `Migration`
async fn migrate_down(db: &Database) -> Result<i32, Error> {
let current_version = get_db_version(db).await?;
let mut migration_iter = MIGRATIONS
.iter()
.rev()
.skip_while(|m| m.version != current_version);
if let Some(migration) = migration_iter.next() {
let client = db.connection_pool.get().await?;
client
.execute(&format!("DO $$BEGIN\n{}\nEND$$;", migration.down), &[])
.await?;
let version = migration_iter.next().map_or(-1, |m| m.version);
client
.execute(
"UPDATE migration_info SET migration_version = $1;",
&[&version],
)
.await?;
Ok(version)
} else {
eprintln!("ERROR: Attempted to migrate down past first migration.");
Ok(current_version)
}
}
/// Apply whatever migrations are necessary to bring the database
/// schema to the same version is [CURRENT_VERSION].
pub async fn migrate_to_current_version(db: &Database) -> Result<(), Error> {
migrate_to_version(db, CURRENT_VERSION).await
}
/// Apply whatever migrations are necessary to bring the database
/// schema to the same version as `target_version`.
///
/// This may migrate up or down as required.
async fn migrate_to_version(db: &Database, target_version: i32) -> Result<(), Error> {
let mut version = get_db_version(db).await?;
while version != target_version {
if version < target_version {
version = migrate_up(db).await?;
} else {
version = migrate_down(db).await?;
}
}
Ok(())
}
/// Get the current schema version of the database.
pub async fn get_db_version(db: &Database) -> Result<i32, Error> {
let client = db.connection_pool.get().await?;
client
.execute(
r#"
DO $$BEGIN
IF NOT EXISTS
( SELECT 1
FROM information_schema.tables
WHERE table_schema = 'public'
AND table_name = 'migration_info'
)
THEN
CREATE TABLE migration_info (
onerow_id BOOL PRIMARY KEY DEFAULT true,
migration_version INTEGER,
CONSTRAINT onerow_unique CHECK (onerow_id));
INSERT
INTO migration_info (migration_version)
VALUES (-1);
END IF;
END$$;"#,
&[],
)
.await?;
Ok(client
.query_one(r#"SELECT migration_version FROM migration_info;"#, &[])
.await?
.get(0))
}
#[cfg(test)]
mod tests {
use super::super::Database;
use super::*;
async fn test_db() -> Database {
let url = std::env::var("LOCALITY_TEST_DATABASE_URL").unwrap();
Database::new(&url)
.unwrap()
.connection_pool
.get()
.await
.unwrap()
.execute(
r#"
DO $$BEGIN
DROP TABlE IF EXISTS admin_users;
DROP TABlE IF EXISTS users;
DROP TABLE IF EXISTS migration_info;
END$$;"#,
&[],
)
.await
.unwrap();
Database::new(&url).unwrap()
}
#[test]
fn migrations_have_sequential_versions() {
for i in 0..MIGRATIONS.len() {
assert_eq!(i as i32, MIGRATIONS[i].version);
}
}
#[tokio::test]
async fn migrate_up_and_down_all() {
let db = test_db().await;
assert_eq!(-1, get_db_version(&db).await.unwrap());
migrate_to_version(&db, MIGRATIONS.last().unwrap().version)
.await
.unwrap();
assert_eq!(
MIGRATIONS.last().unwrap().version,
get_db_version(&db).await.unwrap()
);
migrate_to_version(&db, -1).await.unwrap();
assert_eq!(-1, get_db_version(&db).await.unwrap());
}
}

144
src/db/mod.rs
View File

@ -1,144 +0,0 @@
//! Code for managing the main database.
//!
//! The database schema is defined via a series of migrations in
//! [migrations].
mod migrations;
use {
deadpool_postgres::{CreatePoolError, Pool, Runtime},
tokio_postgres::NoTls,
std::ops::Deref
};
/// Errors that may occur during module initialization
#[derive(thiserror::Error, Debug)]
pub enum InitialisationError {
#[error("Could not initialize DB connection pool: {}", .0.to_string())]
ConnectionPoolError(#[from] CreatePoolError),
}
/// Errors that may occur during normal app operation
#[derive(thiserror::Error, Debug)]
pub enum Error {
#[error("{}", .0.to_string())]
Pool(#[from] deadpool_postgres::PoolError),
#[error("{}", .0.to_string())]
Postgres(#[from] tokio_postgres::Error),
#[error("Not allowed.")]
NotAllowed
}
/// Object that manages the database.
///
/// All database access happens through this struct.
#[derive(Clone, Debug)]
pub struct Database {
connection_pool: Pool,
}
#[derive(Debug)]
pub struct UserId(i32);
#[derive(Debug)]
pub struct User {
id: UserId,
pub real_name: String,
}
pub struct PasswordHash(pub String);
impl Deref for PasswordHash {
type Target = str;
fn deref(&self) -> &str {
&self.0
}
}
impl Database {
/// Create a connection pool and return the [Database].
pub fn new(connection_url: &str) -> Result<Database, InitialisationError> {
let mut config = deadpool_postgres::Config::new();
config.url = Some(connection_url.to_string());
let pg_pool = config.create_pool(Some(Runtime::Tokio1), NoTls)?;
Ok(Database {
connection_pool: pg_pool,
})
}
/// Run migrations as needed to ensure the database schema version
/// match the one used by the current version of the application.
pub async fn migrate_to_current_version(&self) -> Result<(), Error> {
migrations::migrate_to_current_version(self).await
}
async fn get_client(&self) -> Result<deadpool_postgres::Client, Error> {
Ok(self.connection_pool.get().await?)
}
pub async fn has_admin_users(&self) -> Result<bool, Error> {
let client = self.get_client().await?;
Ok(client
.query_one("SELECT EXISTS(SELECT 1 FROM admin_users);", &[])
.await?
.get(0))
}
pub async fn create_user(
&self,
real_name: &str,
email: &str,
password: &PasswordHash,
) -> Result<User, Error> {
let client = self.get_client().await?;
let id = client
.query_one(
r#"
INSERT INTO users
(real_name, email, password)
VALUES $1, $1, $3, $4
RETURNING id;"#,
&[&real_name, &email, &password.0],
)
.await?
.get(0);
Ok(User {
id: UserId(id),
real_name: real_name.to_string(),
})
}
pub async fn get_password_for_user(&self, user: &User) -> Result<PasswordHash, Error> {
let client = self.get_client().await?;
let row = client
.query_one(
"SELECT password FROM users WHERE id = $1;",
&[&user.id.0],
)
.await?;
Ok(PasswordHash(row.get(0)))
}
pub async fn create_first_admin_user(
&self,
real_name: &str,
email: &str,
password: &PasswordHash,
) -> Result<User, Error> {
if self.has_admin_users().await? {
return Err(Error::NotAllowed)
}
let user = self.create_user(real_name, email, password).await?;
let client = self.get_client().await?;
client
.execute("INSERT INTO admin_users (id) VALUES $1", &[&user.id.0])
.await?;
Ok(User {
id: user.id,
real_name: user.real_name,
})
}
}

34
src/error.rs
View File

@ -1,34 +0,0 @@
use {
crate::{authentication, db},
askama_axum::{IntoResponse, Response},
};
#[derive(thiserror::Error, Debug)]
pub enum Error {
#[error("Database Error: {}", 0.to_string())]
DatabaseError(#[from] db::Error),
#[error("Authentication error")]
AuthenticationError(#[from] authentication::AuthenticationError)
}
impl IntoResponse for Error {
fn into_response(self) -> Response {
match self {
Error::DatabaseError(db::Error::Pool(pool_error)) => {
eprintln!("Database connection pool error: {}", pool_error);
todo!()
}
Error::DatabaseError(db::Error::Postgres(postgres_error)) => {
eprintln!("Database error: {}", postgres_error);
todo!()
}
Error::DatabaseError(db::Error::NotAllowed) => {
todo!()
}
Error::AuthenticationError(_) => {
todo!()
}
}
}
}

14
src/main.rs
View File

@ -1,11 +1,8 @@
use {thiserror::Error, tower_http::services::ServeDir}; use {thiserror::Error, tower_http::services::ServeDir};
mod admin;
mod authentication;
mod app; mod app;
mod config; mod config;
mod db; mod db;
mod error;
use config::get_config; use config::get_config;
use db::Database; use db::Database;
@ -16,7 +13,7 @@ pub enum Error {
MissingConfigError(#[from] config::Error), MissingConfigError(#[from] config::Error),
#[error("Database error: {0}")] #[error("Database error: {0}")]
DatabaseError(#[from] db::InitialisationError), DatabaseError(#[from] db::Error),
#[error("{0}")] #[error("{0}")]
IOError(#[from] std::io::Error), IOError(#[from] std::io::Error),
@ -24,7 +21,7 @@ pub enum Error {
fn main() { fn main() {
let runtime = tokio::runtime::Runtime::new().unwrap(); let runtime = tokio::runtime::Runtime::new().unwrap();
std::process::exit(match runtime.block_on(locality_main()) { std::process::exit(match runtime.block_on(localhub_main()) {
Ok(()) => 0, Ok(()) => 0,
Err(err) => { Err(err) => {
eprintln!("ERROR: {}", err); eprintln!("ERROR: {}", err);
@ -33,15 +30,12 @@ fn main() {
}) })
} }
async fn locality_main() -> Result<(), Error> { async fn localhub_main() -> Result<(), Error> {
let config = get_config()?; let config = get_config()?;
let db_pool = Database::new(&config.database_url)?; let db_pool = Database::create_pool(&config.database_url, 2)?;
db_pool.migrate_to_current_version().await.unwrap();
let app = app::routes() let app = app::routes()
.nest("/admin", admin::routes())
.with_state(db_pool) .with_state(db_pool)
.nest_service("/static", ServeDir::new(&config.static_file_path)); .nest_service("/static", ServeDir::new(&config.static_file_path));

26
templates/admin/create_first_user.html
View File

@ -1,26 +0,0 @@
{% extends "base.html" %}
{% block title %}First-time Setup - Locality Administration{% endblock %}
{% block content %}
<h1>Please create an administrator account:</h1>
<form action="/create-initial-admin-user" method="post">>
<ul>
<li>
<label for="real_name">Name:</label>
<input type="text" id="real_name" name="real_name" />
</li>
<li>
<label for="email">Email:</label>
<input type="email" id="email" name="email" />
</li>
<li>
<label for="password">Password:</label>
<input type="password" id="password" name="password" />
</li>
<li>
<button type="submit">Create Account</button>
</li>
</ul>
</form>
{% endblock %}

7
templates/admin/first_login.html
View File

@ -1,7 +0,0 @@
{% extends "base.html" %}
{% block title %}First-time Setup - Locality Administration{% endblock %}
{% block content %}
TODO: first_login.html
{% endblock %}

5
templates/admin/index.html
View File

@ -1,5 +0,0 @@
{% extends "base.html" %}
{% block title %}Locality Administration{% endblock %}
{% block content %}admin{% endblock %}

23
templates/base.html
View File

@ -1,23 +0,0 @@
<!DOCTYPE html>
<html lang="en-US">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width" />
<title>{% block title %}{{title}} - Locality{% endblock %}</title>
<link rel="icon" type="image/png" sizes="32x32" href="static/favicon-32.png">
<link rel="icon" type="image/png" sizes="16x16" href="static/favicon-16.png">
<!-- For Google and Android -->
<link rel="icon" type="image/png" sizes="48x48" href="static/favicon-48.png">
<link rel="icon" type="image/png" sizes="192x192" href="static/favicon-192.png">
<!-- For iPad -->
<link rel="apple-touch-icon" type="image/png" sizes="167x167" href="static/favicon-167.png">
<!-- For iPhone -->
<link rel="apple-touch-icon" type="image/png" sizes="180x180" href="static/favicon-180.png">
{% block head %}{% endblock %}
</head>
<body>
{% block content %}{% endblock %}
</body>
</html>

22
templates/index.html
View File

@ -1,3 +1,21 @@
{% extends "base.html" %} <!DOCTYPE html>
<html lang="en-US">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width" />
<title>{{title}}</title>
{% block content %}It still works!{% endblock %} <link rel="icon" type="image/png" sizes="32x32" href="static/favicon-32.png">
<link rel="icon" type="image/png" sizes="16x16" href="static/favicon-16.png">
<!-- For Google and Android -->
<link rel="icon" type="image/png" sizes="48x48" href="static/favicon-48.png">
<link rel="icon" type="image/png" sizes="192x192" href="static/favicon-192.png">
<!-- For iPad -->
<link rel="apple-touch-icon" type="image/png" sizes="167x167" href="static/favicon-167.png">
<!-- For iPhone -->
<link rel="apple-touch-icon" type="image/png" sizes="180x180" href="static/favicon-180.png">
</head>
<body>
It still works!
</body>
</html>