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https://github.com/rustdesk/rustdesk.git
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Signed-off-by: 21pages <pages21@163.com>
219 lines
6.9 KiB
Rust
219 lines
6.9 KiB
Rust
use crate::config::Config;
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use sodiumoxide::base64;
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use std::sync::{Arc, RwLock};
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lazy_static::lazy_static! {
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pub static ref TEMPORARY_PASSWORD:Arc<RwLock<String>> = Arc::new(RwLock::new(Config::get_auto_password(temporary_password_length())));
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}
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#[derive(Debug, Clone, Copy, PartialEq, Eq)]
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enum VerificationMethod {
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OnlyUseTemporaryPassword,
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OnlyUsePermanentPassword,
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UseBothPasswords,
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}
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// Should only be called in server
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pub fn update_temporary_password() {
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*TEMPORARY_PASSWORD.write().unwrap() = Config::get_auto_password(temporary_password_length());
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}
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// Should only be called in server
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pub fn temporary_password() -> String {
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TEMPORARY_PASSWORD.read().unwrap().clone()
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}
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fn verification_method() -> VerificationMethod {
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let method = Config::get_option("verification-method");
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if method == "use-temporary-password" {
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VerificationMethod::OnlyUseTemporaryPassword
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} else if method == "use-permanent-password" {
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VerificationMethod::OnlyUsePermanentPassword
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} else {
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VerificationMethod::UseBothPasswords // default
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}
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}
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pub fn temporary_password_length() -> usize {
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let length = Config::get_option("temporary-password-length");
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if length == "8" {
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8
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} else if length == "10" {
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10
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} else {
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6 // default
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}
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}
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pub fn temporary_enabled() -> bool {
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verification_method() != VerificationMethod::OnlyUsePermanentPassword
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}
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pub fn permanent_enabled() -> bool {
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verification_method() != VerificationMethod::OnlyUseTemporaryPassword
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}
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pub fn has_valid_password() -> bool {
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temporary_enabled() && !temporary_password().is_empty()
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|| permanent_enabled() && !Config::get_permanent_password().is_empty()
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}
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const VERSION_LEN: usize = 2;
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pub fn encrypt_str_or_original(s: &str, version: &str) -> String {
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if decrypt_str_or_original(s, version).1 {
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log::error!("Duplicate encryption!");
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return s.to_owned();
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}
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if version == "00" {
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if let Ok(s) = encrypt(s.as_bytes()) {
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return version.to_owned() + &s;
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}
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}
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s.to_owned()
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}
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// String: password
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// bool: whether decryption is successful
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// bool: whether should store to re-encrypt when load
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pub fn decrypt_str_or_original(s: &str, current_version: &str) -> (String, bool, bool) {
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if s.len() > VERSION_LEN {
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let version = &s[..VERSION_LEN];
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if version == "00" {
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if let Ok(v) = decrypt(&s[VERSION_LEN..].as_bytes()) {
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return (
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String::from_utf8_lossy(&v).to_string(),
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true,
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version != current_version,
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);
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}
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}
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}
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(s.to_owned(), false, !s.is_empty())
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}
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pub fn encrypt_vec_or_original(v: &[u8], version: &str) -> Vec<u8> {
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if decrypt_vec_or_original(v, version).1 {
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log::error!("Duplicate encryption!");
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return v.to_owned();
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}
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if version == "00" {
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if let Ok(s) = encrypt(v) {
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let mut version = version.to_owned().into_bytes();
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version.append(&mut s.into_bytes());
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return version;
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}
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}
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v.to_owned()
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}
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// Vec<u8>: password
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// bool: whether decryption is successful
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// bool: whether should store to re-encrypt when load
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pub fn decrypt_vec_or_original(v: &[u8], current_version: &str) -> (Vec<u8>, bool, bool) {
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if v.len() > VERSION_LEN {
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let version = String::from_utf8_lossy(&v[..VERSION_LEN]);
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if version == "00" {
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if let Ok(v) = decrypt(&v[VERSION_LEN..]) {
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return (v, true, version != current_version);
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}
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}
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}
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(v.to_owned(), false, !v.is_empty())
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}
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fn encrypt(v: &[u8]) -> Result<String, ()> {
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if v.len() > 0 {
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symmetric_crypt(v, true).map(|v| base64::encode(v, base64::Variant::Original))
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} else {
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Err(())
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}
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}
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fn decrypt(v: &[u8]) -> Result<Vec<u8>, ()> {
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if v.len() > 0 {
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base64::decode(v, base64::Variant::Original).and_then(|v| symmetric_crypt(&v, false))
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} else {
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Err(())
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}
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}
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fn symmetric_crypt(data: &[u8], encrypt: bool) -> Result<Vec<u8>, ()> {
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use sodiumoxide::crypto::secretbox;
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use std::convert::TryInto;
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let mut keybuf = crate::get_uuid();
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keybuf.resize(secretbox::KEYBYTES, 0);
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let key = secretbox::Key(keybuf.try_into().map_err(|_| ())?);
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let nonce = secretbox::Nonce([0; secretbox::NONCEBYTES]);
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if encrypt {
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Ok(secretbox::seal(data, &nonce, &key))
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} else {
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secretbox::open(data, &nonce, &key)
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}
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}
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mod test {
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#[test]
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fn test() {
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use super::*;
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let version = "00";
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println!("test str");
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let data = "Hello World";
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let encrypted = encrypt_str_or_original(data, version);
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let (decrypted, succ, store) = decrypt_str_or_original(&encrypted, version);
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println!("data: {}", data);
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println!("encrypted: {}", encrypted);
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println!("decrypted: {}", decrypted);
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assert_eq!(data, decrypted);
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assert_eq!(version, &encrypted[..2]);
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assert_eq!(succ, true);
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assert_eq!(store, false);
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let (_, _, store) = decrypt_str_or_original(&encrypted, "99");
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assert_eq!(store, true);
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assert_eq!(decrypt_str_or_original(&decrypted, version).1, false);
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assert_eq!(encrypt_str_or_original(&encrypted, version), encrypted);
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println!("test vec");
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let data: Vec<u8> = vec![1, 2, 3, 4, 5, 6];
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let encrypted = encrypt_vec_or_original(&data, version);
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let (decrypted, succ, store) = decrypt_vec_or_original(&encrypted, version);
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println!("data: {:?}", data);
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println!("encrypted: {:?}", encrypted);
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println!("decrypted: {:?}", decrypted);
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assert_eq!(data, decrypted);
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assert_eq!(version.as_bytes(), &encrypted[..2]);
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assert_eq!(store, false);
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assert_eq!(succ, true);
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let (_, _, store) = decrypt_vec_or_original(&encrypted, "99");
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assert_eq!(store, true);
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assert_eq!(decrypt_vec_or_original(&decrypted, version).1, false);
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assert_eq!(encrypt_vec_or_original(&encrypted, version), encrypted);
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println!("test original");
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let data = version.to_string() + "Hello World";
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let (decrypted, succ, store) = decrypt_str_or_original(&data, version);
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assert_eq!(data, decrypted);
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assert_eq!(store, true);
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assert_eq!(succ, false);
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let verbytes = version.as_bytes();
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let data: Vec<u8> = vec![verbytes[0] as u8, verbytes[1] as u8, 1, 2, 3, 4, 5, 6];
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let (decrypted, succ, store) = decrypt_vec_or_original(&data, version);
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assert_eq!(data, decrypted);
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assert_eq!(store, true);
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assert_eq!(succ, false);
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let (_, succ, store) = decrypt_str_or_original("", version);
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assert_eq!(store, false);
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assert_eq!(succ, false);
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let (_, succ, store) = decrypt_vec_or_original(&vec![], version);
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assert_eq!(store, false);
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assert_eq!(succ, false);
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}
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}
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