51 lines
2.0 KiB
Rust
51 lines
2.0 KiB
Rust
use std::env;
|
|
|
|
fn main() {
|
|
// Take in two command line arguments, one i32 and one optional String
|
|
let args: Vec<String> = env::args().collect();
|
|
if args.len() < 2 { // Make sure at least one argument is provided
|
|
println!("Error: First argument must be a valid integer (Ex. 32)");
|
|
println!("Argument not supplied");
|
|
return;
|
|
}
|
|
|
|
let new_password_length: Option<i32> = args[1].parse().ok();
|
|
if new_password_length.is_none() { // Make sure i32 parsed correctly
|
|
println!("Error: First argument must be a valid integer (Ex. 32)");
|
|
return;
|
|
}
|
|
|
|
// Disallowed_chars is an optional argument
|
|
let disallowed_chars: Option<&String> = args.get(2);
|
|
|
|
let mut allowed_chars: String = String::from("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890-=`~!@#$%^&*()_+[]\\{}|;':,./<>?");
|
|
|
|
// Remove disallowed characters from allowed_characters if disallowed_chars is specified
|
|
if let Some(disallowed_chars) = disallowed_chars {
|
|
for disallowed_char in disallowed_chars.chars() {
|
|
allowed_chars = allowed_chars.replace(disallowed_char, "");
|
|
}
|
|
|
|
if allowed_chars.len() == 0 { // Make sure there are still characters left to use
|
|
println!("Error: You have disallowed all characters");
|
|
println!("The allowed character set includes: abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890-=`~!@#$%^&*()_+[]\\{{}}|;':,./<>?");
|
|
return;
|
|
}
|
|
}
|
|
|
|
if let Some(new_password_length) = new_password_length { // Unwrap Option in i32
|
|
// Generate a random string of length n
|
|
let mut new_password = String::new();
|
|
for _ in 0..new_password_length {
|
|
new_password.push(
|
|
allowed_chars.chars()
|
|
.nth(rand::random::<usize>() % allowed_chars.len())
|
|
.unwrap()
|
|
);
|
|
}
|
|
|
|
// Print the new password
|
|
println!("{}", new_password);
|
|
}
|
|
}
|