1 files changed, 160 insertions, 0 deletions
diff --git a/web/pwcrypt/src/main.rs b/web/pwcrypt/src/main.rs
new file mode 100644
index 000000000000..2b9b82abb022
--- /dev/null
+++ b/web/pwcrypt/src/main.rs
@@ -0,0 +1,160 @@
+use argon2::password_hash::{PasswordHasher, SaltString};
+use argon2::Argon2;
+use gloo::console::log;
+use rand_core::OsRng;
+use web_sys::HtmlInputElement;
+use yew::prelude::*;
+
+fn hash_password(pw: &str) -> String {
+    let salt = SaltString::generate(&mut OsRng);
+    let argon2 = Argon2::default();
+    argon2
+        .hash_password(pw.as_bytes(), &salt)
+        .expect("failed to hash pw")
+        .to_string()
+}
+
+enum Msg {
+    NoOp,
+    SetEmail(String),
+    SetPassword(String),
+    SetUsername(String),
+    UpdateCredentials,
+}
+
+#[derive(Default)]
+struct App {
+    email: Option<String>,
+    password: Option<String>,
+    username: Option<String>,
+    hashed: Option<String>,
+}
+
+impl App {
+    fn whats_missing(&self) -> Option<String> {
+        let mut missing = vec![];
+
+        if self.username.is_none() {
+            missing.push("username");
+        }
+
+        if self.email.is_none() {
+            missing.push("email");
+        }
+
+        if self.password.is_none() {
+            missing.push("password");
+        }
+
+        match missing.len() {
+            0 => None,
+            1 => Some(missing[0].to_string()),
+            2 => Some(format!("{} and {}", missing[0], missing[1])),
+            3 => Some(format!("{}, {} and {}", missing[0], missing[1], missing[2])),
+            _ => unreachable!(),
+        }
+    }
+
+    fn update_credentials(&mut self) {
+        if self.password.is_none() {
+            log!("error: password unset, but credentials requested");
+            return;
+        }
+
+        let pw = self.password.as_ref().unwrap();
+        let hashed = hash_password(pw);
+        log!("hashed password to", &hashed);
+        self.hashed = Some(hashed);
+    }
+
+    fn display_credentials(&self) -> Html {
+        if let (Some(username), Some(email), Some(hash)) =
+            (&self.username, &self.email, &self.hashed)
+        {
+            html! {
+              <>
+                <hr />
+                <p>{"Your credentials are as follows: "}</p>
+                <pre>
+                  {"  {\n"}
+                  {"    username = \""}{username}{"\";\n"}
+                  {"    email = \""}{email}{"\";\n"}
+                  {"    password = \"{ARGON2}"}{hash}{"\";\n"}
+                  {"  }"}
+                </pre>
+                <p>
+                  {"Please propose a CL to "}
+                  <a href="https://at.tvl.fyi/?q=//ops/users/default.nix">
+                    <code>{"//ops/users/default.nix"}</code>
+                  </a>
+                  {", or submit your patch via email to "}
+                  <a href="mailto:depot@tvl.su">{"depot@tvl.su"}</a>
+                  {"."}
+                </p>
+              </>
+            }
+        } else {
+            html! {}
+        }
+    }
+}
+
+fn input_to_message(event: InputEvent, msg: fn(String) -> Msg) -> Msg {
+    let input = event.target_unchecked_into::<HtmlInputElement>();
+    if input.check_validity() {
+        msg(input.value())
+    } else {
+        Msg::NoOp
+    }
+}
+
+fn set_if_present(s: String, target: &mut Option<String>) {
+    if s.is_empty() {
+        *target = None;
+    } else {
+        *target = Some(s);
+    }
+}
+
+impl Component for App {
+    type Message = Msg;
+    type Properties = ();
+
+    fn create(_: &Context<Self>) -> Self {
+        Self::default()
+    }
+
+    fn update(&mut self, _: &Context<Self>, msg: Self::Message) -> bool {
+        log!(
+            "handling message ",
+            match msg {
+                Msg::NoOp => "NoOp",
+                Msg::SetEmail(_) => "SetEmail",
+                Msg::SetUsername(_) => "SetUsername",
+                Msg::SetPassword(_) => "SetPassword",
+                Msg::UpdateCredentials => "UpdateCredentials",
+            }
+        );
+
+        match msg {
+            Msg::NoOp => return false,
+            Msg::SetEmail(email) => set_if_present(email, &mut self.email),
+            Msg::SetUsername(username) => set_if_present(username, &mut self.username),
+            Msg::SetPassword(password) => set_if_present(password, &mut self.password),
+            Msg::UpdateCredentials => {
+                self.update_credentials();
+            }
+        }
+
+        true
+    }
+
+    fn view(&self, ctx: &Context<Self>) -> Html {
+        let link = ctx.link();
+        include!("main.html")
+    }
+}
+
+fn main() {
+    yew::Renderer::<App>::new().render();
+}