feat: added verification for the ssh keys

Closes #15

Cargo.lock

@@ -2690,9 +2690,9 @@ dependencies = [
 
 [[package]]
 name = "ssh-key"
-version = "0.6.0"
+version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b0a17fec6ea344bfa1cda3aed2f0696fddc6295cfcc8c454a3bf58b8ffaabeb"
+checksum = "728fdf5286c394f12d83eaad51190af629aade5494813ce6b57f7425f1ca51b7"
 dependencies = [
  "dsa",
  "ed25519-dalek",

Cargo.toml

@@ -42,5 +42,4 @@ lettre = "0.10.4"
 maud = "0.25.0"
 
 # verifying ssh keys
-ssh-key  = { version = "0.6.0", features = ["ecdsa", "rand_core", "std", "dsa", "ed25519", "rsa" ] }
-
+ssh-key = { version = "0.6.1", features = ["crypto", "dsa"] }

silver/.ssh/authorized_keys

@@ -0,0 +1,3 @@
+# --- BEGIN PVE ---
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIBHbsOjxIcLasz+CHA8gUg1pvc8dPHwMKdWoIwNvPxLp Desktop_WSL
+# --- END PVE ---

src/main.rs

@@ -32,6 +32,7 @@ async fn main() -> tide::Result<()> {
     app.at("/ldap/recover/password/auth").post(account_recover::password::auth);
     app.at("/ldap/recover/username").post(account_recover::username::submit);
     app.at("/ldap/recover/ssh/request").post(account_recover::ssh::request);
+    app.at("/ldap/recover/ssh/verify").post(account_recover::ssh::verify);
 
     app.listen(host_port).await?;
     Ok(())

src/methods/account_recover.rs

@@ -426,7 +426,9 @@ pub mod username {
 pub mod ssh {
     use super::*;
     use crate::AccountsSSH;
-    use ssh_key::AuthorizedKeys;
+    use ldap3::Mod;
+    use ssh_key::{AuthorizedKeys, SshSig};
+    use std::collections::HashSet;
     use std::fs;
 
     // this is for a legacy member who has forgotten their account password to be able to set an email.
@@ -479,7 +481,7 @@ pub mod ssh {
 
         // check if there is ane listing entry, use that auth if exists
         if let Ok(result) = sqlx::query_as::<_, AccountsSSH>(
-          r#"
+            r#"
           SELECT *
           FROM accounts_ssh
           WHERE user == ?
@@ -495,7 +497,7 @@ pub mod ssh {
         // not in db, generate auth and save
         let auth = random_string(50);
         if sqlx::query_as::<_, AccountsSSH>(
-          "
+            "
           INSERT OR REPLACE INTO accounts_ssh (user, auth_code, email)
           VALUES (?1, ?2, ?3)
           ",
@@ -514,4 +516,96 @@ pub mod ssh {
         // return the full thing
         Ok(json!({"result": "success","success": { "auth": auth,"keys": keys }}).into())
     }
+
+    #[derive(Debug, Deserialize)]
+    struct RequestVerify {
+        user: String,
+        auth_signed: String,
+    }
+
+    // echo "auth code" | ssh-keygen -Y sign -n file -f /path/to/key
+    pub async fn verify(mut req: Request<State>) -> tide::Result {
+        let RequestVerify {
+            user,
+            auth_signed,
+        } = req.body_json().await?;
+
+        let db = &req.state().db;
+        let config = &req.state().config;
+        let details = if let Ok(result) = sqlx::query_as::<_, AccountsSSH>(
+            r#"
+          SELECT *
+          FROM accounts_ssh
+          WHERE user == ?
+          "#,
+        )
+        .bind(&user)
+        .fetch_one(db)
+        .await
+        {
+            result
+        } else {
+            return Ok(json!({ "result": "error"}).into());
+        };
+
+        // check if <root>/<user>/.ssh/authorized_keys exists
+        //let root = "/skynet_old";
+        let root = ".";
+        let path = format!("{}/{}/.ssh/authorized_keys", root, user);
+
+        let sig = match SshSig::from_pem(auth_signed) {
+            Ok(x) => x,
+            Err(_) => {
+                return Ok(json!({ "result": "error", "error": "Incorrect signed format"}).into());
+            }
+        };
+
+        // when ye echo it adds a newline to the end of the "file", need to duplicate it here.
+        let msg_tmp = format!("{}\n", details.auth_code);
+        let msg = msg_tmp.as_bytes();
+
+        let mut valid = false;
+        if fs::read_to_string(&path).is_ok() {
+            if let Ok(x) = AuthorizedKeys::read_file(path) {
+                for entry in x {
+                    let key = entry.public_key();
+                    match key.verify("file", msg, &sig) {
+                        Ok(_) => {
+                            valid = true;
+                            break;
+                        }
+                        Err(_) => {}
+                    }
+                }
+            }
+        }
+
+        if !valid {
+            return Ok(json!({"result": "error", "error": "no valid key"}).into());
+        }
+
+        // add to ldap
+        let mut ldap = LdapConn::new(&config.ldap_host)?;
+        ldap.simple_bind(&config.ldap_admin, &config.ldap_admin_pw)?.success()?;
+
+        let mods = vec![Mod::Replace(String::from("mail"), HashSet::from([details.email]))];
+
+        let dn = format!("uid={},ou=users,dc=skynet,dc=ie", &user);
+        ldap.modify(&dn, mods)?.success()?;
+        ldap.unbind()?;
+
+        // delete from tmp
+        sqlx::query_as::<_, AccountsSSH>(
+            r#"
+          DELETE FROM accounts_ssh
+          WHERE user == ?
+          "#,
+        )
+        .bind(&user)
+        .fetch_optional(db)
+        .await?;
+
+        // return the full thing
+        Ok(json!({"result": "success", "success": "key valid"}).into())
+    }
 }