Can login user

src/utils/crypt_utils.rs

@@ -5,6 +5,8 @@
 extern crate sha1;
 
 use crate::data::error::{ResultBoxError, ExecError};
+use rand::{thread_rng, Rng};
+use rand::distributions::Alphanumeric;
 
 /// Generate a new sha1 string
 ///
@@ -44,4 +46,20 @@ pub fn crypt_pass(pass: &str) -> ResultBoxError<String> {
     }
 
     Ok(String::from_utf8(result.stdout)?)
+}
+
+/// Generate a random string of a given size
+///
+/// ```
+/// use comunic_server::utils::crypt_utils::rand_str;
+///
+/// let size = 10;
+/// let rand = rand_str(size);
+/// assert_eq!(size, rand.len());
+/// ```
+pub fn rand_str(len: usize) -> String {
+    thread_rng()
+        .sample_iter(&Alphanumeric)
+        .take(len)
+        .collect()
 }