merge fun

src/methods/mod.rs

@@ -1,3 +1,4 @@
 pub mod account_new;
 pub mod account_recover;
 pub mod account_update;
+pub mod password_reset;

src/methods/password_reset.rs

@@ -0,0 +1,302 @@
+use crate::{get_now_iso, random_string, uid_to_dn, Accounts, AccountsReset, Config, State};
+use chrono::{Duration, SecondsFormat, Utc};
+use ldap3::{exop::PasswordModify, LdapConn};
+use lettre::{
+    message::{header, MultiPart, SinglePart},
+    transport::smtp::{authentication::Credentials, response::Response, Error},
+    Message, SmtpTransport, Transport,
+};
+use maud::html;
+use sqlx::{Pool, Sqlite};
+use tide::{
+    prelude::{json, Deserialize},
+    Request,
+};
+
+#[derive(Debug, Deserialize)]
+pub struct PassReset {
+    user: Option<String>,
+    email: Option<String>,
+}
+
+/// Handles password resets
+/// All responses are success, never want to leak info
+pub async fn post_password_reset(mut req: Request<State>) -> tide::Result {
+    let PassReset {
+        user,
+        email,
+    } = req.body_json().await?;
+
+    // check that any mail is not using @skynet.ie
+    if let Some(mail) = &email {
+        if mail.trim().ends_with("@skynet.ie") {
+            // all responses from this are a success
+            return Ok(json!({"result": "success"}).into());
+        }
+    }
+
+    let config = &req.state().config;
+    let db = &req.state().db;
+
+    // considering the local db is updated hourly (or less) use that instead of teh ldap for lookups
+    let user_details = match db_get_user(db, &user, &email).await {
+        None => {
+            return Ok(json!({"result": "success"}).into());
+        }
+        Some(x) => x,
+    };
+
+    // user does not have a different email address set
+    if user_details.mail.trim().ends_with("@skynet.ie") {
+        return Ok(json!({"result": "success"}).into());
+    }
+
+    // check if a recent password reset request happened lately
+    db_pending_clear_expired(db).await?;
+
+    if db_get_user_reset(db, &user_details.user).await.is_some() {
+        // reset already requested within timeframe
+        return Ok(json!({"result": "success"}).into());
+    }
+
+    // send mail
+    let auth = random_string(50);
+
+    if send_mail(config, &user_details, &auth).is_ok() {
+        // save to db
+
+        save_to_db(db, &user_details, &auth).await?;
+    }
+
+    Ok(json!({"result": "success"}).into())
+}
+
+#[derive(Debug, Deserialize)]
+pub struct PassResetAuth {
+    auth: String,
+    pass: String,
+}
+
+pub async fn post_password_auth(mut req: Request<State>) -> tide::Result {
+    let PassResetAuth {
+        auth,
+        pass,
+    } = req.body_json().await?;
+
+    let config = &req.state().config;
+    let db = &req.state().db;
+
+    if db_pending_clear_expired(db).await.is_err() {
+        return Ok(json!({"result": "error"}).into());
+    }
+
+    // check if auth exists
+    let details = match db_get_user_reset_auth(db, &auth).await {
+        None => {
+            return Ok(json!({"result": "error"}).into());
+        }
+        Some(x) => x,
+    };
+
+    if ldap_reset_pw(config, &details, &pass).await.is_err() {
+        return Ok(json!({"result": "error", "error": "ldap error"}).into());
+    };
+
+    Ok(json!({"result": "success", "success": "Password set"}).into())
+}
+
+async fn db_get_user(pool: &Pool<Sqlite>, user_in: &Option<String>, mail_in: &Option<String>) -> Option<Accounts> {
+    let user = match user_in {
+        None => "",
+        Some(x) => x,
+    };
+    let mail = match mail_in {
+        None => "",
+        Some(x) => x,
+    };
+
+    if let Ok(res) = sqlx::query_as::<_, Accounts>(
+        r#"
+        SELECT *
+        FROM accounts
+        WHERE user == ? OR mail ==?
+        "#,
+    )
+    .bind(user)
+    .bind(mail)
+    .fetch_all(pool)
+    .await
+    {
+        if !res.is_empty() {
+            return Some(res[0].to_owned());
+        }
+    }
+
+    None
+}
+
+async fn db_pending_clear_expired(pool: &Pool<Sqlite>) -> Result<Vec<AccountsReset>, sqlx::Error> {
+    sqlx::query_as::<_, AccountsReset>(
+        r#"
+        DELETE 
+        FROM accounts_reset
+        WHERE date_expiry < ?
+        "#,
+    )
+    .bind(get_now_iso(false))
+    .fetch_all(pool)
+    .await
+}
+
+async fn db_get_user_reset(pool: &Pool<Sqlite>, user: &str) -> Option<AccountsReset> {
+    if let Ok(res) = sqlx::query_as::<_, AccountsReset>(
+        r#"
+        SELECT *
+        FROM accounts_reset
+        WHERE user == ?
+        "#,
+    )
+    .bind(user)
+    .fetch_all(pool)
+    .await
+    {
+        if !res.is_empty() {
+            return Some(res[0].to_owned());
+        }
+    }
+
+    None
+}
+
+async fn db_get_user_reset_auth(pool: &Pool<Sqlite>, auth: &str) -> Option<AccountsReset> {
+    if let Ok(res) = sqlx::query_as::<_, AccountsReset>(
+        r#"
+        SELECT *
+        FROM accounts_reset
+        WHERE auth == ?
+        "#,
+    )
+    .bind(auth)
+    .fetch_all(pool)
+    .await
+    {
+        if !res.is_empty() {
+            return Some(res[0].to_owned());
+        }
+    }
+
+    None
+}
+
+async fn ldap_reset_pw(config: &Config, details: &AccountsReset, pass: &str) -> Result<(), ldap3::LdapError> {
+    let mut ldap = LdapConn::new(&config.ldap_host)?;
+    ldap.simple_bind(&config.ldap_admin, &config.ldap_admin_pw)?.success()?;
+
+    let dn = uid_to_dn(&details.user);
+
+    // if so then set password
+    let tmp = PasswordModify {
+        // none as we are staying on the same connection
+        user_id: Some(&dn),
+        old_pass: None,
+        new_pass: Some(pass),
+    };
+
+    ldap.extended(tmp)?.success()?;
+    ldap.unbind()?;
+
+    Ok(())
+}
+
+fn send_mail(config: &Config, record: &Accounts, auth: &str) -> Result<Response, Error> {
+    let recipient = &record.user;
+    let mail = &record.mail;
+    let url_base = "https://sso.skynet.ie";
+    let link_new = format!("{url_base}/recovery_pass?auth={auth}");
+    let discord = "https://discord.gg/mkuKJkCuyM";
+    let sender = format!("UL Computer Society <{}>", &config.mail_user);
+
+    // Create the html we want to send.
+    let html = html! {
+        head {
+            title { "Hello from Skynet!" }
+            style type="text/css" {
+                "h2, h4 { font-family: Arial, Helvetica, sans-serif; }"
+            }
+        }
+        div style="display: flex; flex-direction: column; align-items: center;" {
+            h2 { "Hello from Skynet!" }
+            // Substitute in the name of our recipient.
+            p { "Hi " (recipient) "," }
+            p {
+                "Here is your password reset link:"
+                br;
+                a href=(link_new) { (link_new) }
+            }
+            p {
+                "If did not request this please ignore."
+            }
+            p {
+                "UL Computer Society"
+                br;
+                "Skynet Team"
+                br;
+                a href=(discord) { (discord) }
+            }
+        }
+    };
+
+    let body_text = format!(
+        r#"
+        Hi {recipient}
+        
+        Here is your password reset link:
+        {link_new}
+        
+        If did not request this please ignore.
+        
+        UL Computer Society
+        Skynet Team
+        {discord}
+        "#
+    );
+
+    // Build the message.
+    let email = Message::builder()
+        .from(sender.parse().unwrap())
+        .to(mail.parse().unwrap())
+        .subject("Skynet: Password Reset")
+        .multipart(
+            // This is composed of two parts.
+            // also helps not trip spam settings (uneven number of url's
+            MultiPart::alternative()
+                .singlepart(SinglePart::builder().header(header::ContentType::TEXT_PLAIN).body(body_text))
+                .singlepart(SinglePart::builder().header(header::ContentType::TEXT_HTML).body(html.into_string())),
+        )
+        .expect("failed to build email");
+
+    let creds = Credentials::new(config.mail_user.clone(), config.mail_pass.clone());
+
+    // Open a remote connection to gmail using STARTTLS
+    let mailer = SmtpTransport::starttls_relay(&config.mail_smtp).unwrap().credentials(creds).build();
+
+    // Send the email
+    mailer.send(&email)
+}
+
+async fn save_to_db(db: &Pool<Sqlite>, record: &Accounts, auth: &str) -> Result<Option<AccountsReset>, sqlx::Error> {
+    // lets start off a 4 hour timeout on password resets
+    let offset = Utc::now() + Duration::hours(4);
+
+    sqlx::query_as::<_, AccountsReset>(
+        "
+        INSERT OR REPLACE INTO accounts_reset (user, auth_code, date_expiry)
+        VALUES (?1, ?2, ?3)
+        ",
+    )
+    .bind(record.user.to_owned())
+    .bind(auth.to_owned())
+    .bind(offset.to_rfc3339_opts(SecondsFormat::Millis, true))
+    .fetch_optional(db)
+    .await
+}