Removed " character from allowed_chars, allow second optional argument for disallowed characters, error handling for missing or incorrect arguments

This commit is contained in:
Maximilian 2023-01-10 18:35:22 -06:00
parent 273b0204d4
commit 4c31581d39
2 changed files with 44 additions and 15 deletions

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@ -1,6 +1,6 @@
[package]
name = "rust_pass"
version = "0.1.0"
version = "1.0.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

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@ -1,21 +1,50 @@
use std::env;
fn main() {
// Take in two command line arguments, one i32 and one str
// Take in two command line arguments, one i32 and one optional String
let args: Vec<String> = env::args().collect();
let new_password_length: i32 = args[1].parse().unwrap();
let allowed_chars: &str = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890-=`~!@#$%^&*()_+[]\\{}|;':\",./<>?";
// Generate a random string of length n
let mut new_password = String::new();
for _ in 0..new_password_length {
new_password.push(
allowed_chars.chars()
.nth(rand::random::<usize>() % allowed_chars.len())
.unwrap()
);
if args.len() < 2 { // Make sure at least one argument is provided
println!("Error: First argument must be a valid integer (Ex. 32)");
println!("Argument not supplied");
return;
}
// Print the new password
println!("{}", new_password);
let new_password_length: Option<i32> = args[1].parse().ok();
if new_password_length.is_none() { // Make sure i32 parsed correctly
println!("Error: First argument must be a valid integer (Ex. 32)");
return;
}
// Disallowed_chars is an optional argument
let disallowed_chars: Option<&String> = args.get(2);
let mut allowed_chars: String = String::from("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890-=`~!@#$%^&*()_+[]\\{}|;':,./<>?");
// 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);
}
}