Rewrite Google Authenticator converter

core/Cargo.toml

@@ -27,6 +27,7 @@ keyring = "1.2.0"
 once_cell = "1.15.0"
 tauri-plugin-single-instance = { git = "https://github.com/tauri-apps/tauri-plugin-single-instance" }
 rand = "0.8.5"
+google_authenticator_converter = { path = "crates/google_authenticator_converter" }
 
 [features]
 # by default Tauri runs in production mode
@@ -41,3 +42,9 @@ panic = "abort" # Strip expensive panic clean-up logic
 codegen-units = 1 # Compile crates one after another so the compiler can optimize better
 lto = true # Enables link to optimizations
 opt-level = "s" # Optimize for binary size
+
+[workspace]
+
+members = [
+    "crates/*",
+]

core/crates/google_authenticator_converter/.gitignore

@@ -0,0 +1 @@
+/target

core/crates/google_authenticator_converter/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "google_authenticator_converter"
+version = "0.1.0"
+edition = "2021"
+license = "MIT"
+description= "Extract name, secret and issuer from a Google Authenticator migration QR code"
+
+[dependencies]
+base32 = "0.4.0"
+base64 = "0.21.0"
+urlencoding = "2.1.2"
+protobuf = { version = "2" }
+serde_json = { version = "1"}
+serde = {version = "1", features = ["derive"] }

core/crates/google_authenticator_converter/LICENSE.md

@@ -0,0 +1,7 @@
+Copyright 2023 Lőrik Levente
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

core/crates/google_authenticator_converter/README.md

@@ -0,0 +1,8 @@
+# google_authenticator_converter
+
+-   Extract name, secret and issuer from a Google Authenticator migration QR code
+
+### Based on:
+
+[google-authenticator-extractor
+](https://github.com/zhangyuan/google-authenticator-extractor)

core/crates/google_authenticator_converter/src/lib.rs

@@ -0,0 +1,62 @@
+use base64::{engine::general_purpose, Engine as _};
+use protobuf::Message;
+use serde::Serialize;
+
+mod proto;
+#[derive(Debug, Serialize)]
+pub struct Account {
+    name: String,
+    secret: String,
+    issuer: String,
+}
+
+impl Account {
+    pub fn new(name: String, secret: String, mut issuer: String) -> Account {
+        // If the issuer is empty, use the name as the issuer.
+        if issuer.is_empty() {
+            issuer = name.clone()
+        }
+
+        Account {
+            name,
+            secret,
+            issuer,
+        }
+    }
+}
+
+pub fn process_data(string: &str) -> Vec<Account> {
+    let encoded_data = extract_data_from_uri(string).unwrap();
+    let decoded_data = general_purpose::STANDARD.decode(encoded_data).unwrap();
+
+    let migration_payload =
+        proto::google_auth::MigrationPayload::parse_from_bytes(decoded_data.as_slice()).unwrap();
+
+    let otp_parameters = migration_payload.otp_parameters.into_vec();
+
+    let alphabet = base32::Alphabet::RFC4648 { padding: false };
+
+    let payloads: Vec<Account> = otp_parameters
+        .into_iter()
+        .map(|a| {
+            Account::new(
+                a.name,
+                base32::encode(alphabet, a.secret.as_slice()),
+                a.issuer,
+            )
+        })
+        .collect();
+
+    return payloads;
+}
+
+pub fn extract_data_from_uri(raw: &str) -> Result<String, Box<dyn std::error::Error>> {
+    let mut split = raw.split("data=");
+
+    if let Some(encoded_data) = split.next() {
+        let s = urlencoding::decode(encoded_data)?;
+        Ok(s.to_string())
+    } else {
+        Err("No data found in URI".into())
+    }
+}