265 lines
7.4 KiB
Rust
265 lines
7.4 KiB
Rust
use std::{fs, io};
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use std::io::Write;
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use std::path::{Path, PathBuf};
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use base64::Engine;
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use base64::engine::general_purpose;
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use rand::random;
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use rust_util::{information, opt_result, print_ex, simple_error, util_term, warning, XResult};
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use zeroize::Zeroize;
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use crate::consts::TINY_ENC_FILE_EXT;
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use crate::util_digest::DigestWrite;
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pub struct SecVec(pub Vec<u8>);
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impl Drop for SecVec {
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fn drop(&mut self) {
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self.0.zeroize()
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}
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}
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impl AsRef<[u8]> for SecVec {
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fn as_ref(&self) -> &[u8] {
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&self.0
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}
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}
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pub fn read_pin(pin: &Option<String>) -> String {
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match pin {
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Some(pin) => pin.to_string(),
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None => if util_term::read_yes_no("Use default PIN 123456, please confirm") {
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"123456".into()
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} else {
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rpassword::prompt_password("Please input PIN: ").expect("Read PIN failed")
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}
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}
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}
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pub fn remove_file_with_msg(path: &PathBuf) {
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match fs::remove_file(path) {
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Err(e) => warning!("Remove file: {} failed: {}", path.display(), e),
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Ok(_) => information!("Remove file: {} succeed", path.display()),
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}
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}
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pub fn get_file_name(path: &Path) -> String {
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let path_display = format!("{}", path.display());
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if path_display.contains('/') {
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if let Some(p) = path_display.split('/').last() {
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return p.to_string();
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}
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}
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path_display
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}
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pub fn require_tiny_enc_file_and_exists(path: impl AsRef<Path>) -> XResult<()> {
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let path = path.as_ref();
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let path_display = format!("{}", path.display());
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if !path_display.ends_with(TINY_ENC_FILE_EXT) {
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return simple_error!("File is not tiny encrypt file: {}", &path_display);
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}
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require_file_exists(path)?;
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Ok(())
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}
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pub fn require_file_exists(path: impl AsRef<Path>) -> XResult<()> {
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let path = path.as_ref();
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let metadata = match fs::metadata(path) {
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Ok(metadata) => metadata,
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Err(_) => return simple_error!("File: {} not exists", path.display()),
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};
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if !metadata.is_file() {
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return simple_error!("Path: {} is not a file", path.display());
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}
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Ok(())
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}
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pub fn require_file_not_exists(path: impl AsRef<Path>) -> XResult<()> {
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let path = path.as_ref();
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match fs::metadata(path) {
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Ok(_) => simple_error!("File: {} exists", path.display()),
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Err(_) => Ok(()),
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}
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}
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pub fn make_nonce() -> SecVec {
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let (_, nonce) = make_key256_and_nonce();
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nonce
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}
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pub fn make_key256_and_nonce() -> (SecVec, SecVec) {
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let key: [u8; 32] = random();
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let nonce: [u8; 12] = random();
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let key_vec: Vec<u8> = key.into();
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let nonce_vec: Vec<u8> = nonce.into();
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let (mut key, mut nonce) = (key, nonce);
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key.zeroize();
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nonce.zeroize();
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(SecVec(key_vec), SecVec(nonce_vec))
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}
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pub fn simple_kdf(input: &[u8]) -> Vec<u8> {
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let mut input = input.to_vec();
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for _ in 0..8 {
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let mut sha256 = DigestWrite::sha256();
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sha256.write_all(&input).expect("SHOULD NOT HAPPEN");
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input = sha256.digest();
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}
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input
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}
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pub fn parse_pem(pem: &str) -> XResult<Vec<u8>> {
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let mut pem = pem.trim().to_owned();
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if pem.starts_with("-----BEGIN") {
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let mut filter_lines = vec![];
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let lines = pem.lines().skip(1);
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for ln in lines {
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if ln.starts_with("-----END") {
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break;
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} else {
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filter_lines.push(ln.to_string());
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}
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}
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pem = filter_lines.join("");
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}
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pem = pem.chars().filter(|c| *c != '\n' && *c != '\r').clone().collect::<String>();
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Ok(opt_result!(decode_base64(&pem), "Decode PEM failed: {}"))
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}
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pub fn to_pem(bs: &[u8], name: &str) -> String {
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let bs_base64 = encode_base64(bs);
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let mut pem = String::with_capacity(bs.len() + 64);
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pem.push_str(&format!("-----BEGIN {}-----", name));
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for (i, c) in bs_base64.chars().enumerate() {
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if i % 64 == 0 { pem.push('\n'); }
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pem.push(c);
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}
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if !pem.ends_with('\n') { pem.push('\n'); }
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pem.push_str(&format!("-----END {}-----", name));
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pem
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}
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pub fn decode_base64(input: &str) -> XResult<Vec<u8>> {
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Ok(general_purpose::STANDARD.decode(input)?)
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}
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pub fn encode_base64(input: &[u8]) -> String {
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general_purpose::STANDARD.encode(input)
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}
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pub fn encode_base64_url_no_pad(input: &[u8]) -> String {
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general_purpose::URL_SAFE_NO_PAD.encode(input)
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}
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pub fn decode_base64_url_no_pad(input: &str) -> XResult<Vec<u8>> {
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Ok(general_purpose::URL_SAFE_NO_PAD.decode(input)?)
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}
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pub fn read_number(hint: &str, from: usize, to: usize) -> usize {
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loop {
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print_ex!("{} ({}-{}): ", hint, from, to);
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io::stdout().flush().ok();
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let mut buff = String::new();
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let _ = io::stdin().read_line(&mut buff).expect("Read line from stdin");
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let buff = buff.trim();
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match buff.parse() {
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Err(_) => warning!("Input number error!"),
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Ok(number) => if number < from || number > to {
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warning!("Input number is not in range.");
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} else {
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return number;
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},
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}
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}
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}
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pub fn get_user_agent() -> String {
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format!("TinyEncrypt-rs v{}@{}-{}",
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env!("CARGO_PKG_VERSION"),
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get_os(), get_arch(),
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)
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}
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pub fn get_os() -> String {
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if cfg!(target_os = "macos") {
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"macOS"
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} else if cfg!(target_os = "ios") {
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"iOS"
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} else if cfg!(target_os = "android") {
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"Android"
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} else if cfg!(target_os = "windows") {
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"Windows"
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} else if cfg!(target_os = "linux") {
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"Linux"
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} else if cfg!(target_os = "freebsd") {
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"FreeBSD"
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} else if cfg!(target_os = "dragonfly") {
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"Dragonfly"
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} else if cfg!(target_os = "openbsd") {
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"OpenBSD"
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} else if cfg!(target_os = "netbsd") {
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"NetBSD"
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} else {
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"UnknownOS"
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}.to_string()
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}
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pub fn get_arch() -> String {
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if cfg!(target_arch = "x86_64") {
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"x86-64"
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} else if cfg!(target_arch = "x86") {
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"x86"
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} else if cfg!(target_arch = "aarch64") {
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"aarch64"
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} else if cfg!(target_arch = "arm") {
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"arm"
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} else if cfg!(target_arch = "riscv64") {
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"riscv64"
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} else if cfg!(target_arch = "riscv32") {
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"riscv32"
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} else if cfg!(target_arch = "mips64") {
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"mips64"
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} else if cfg!(target_arch = "mips") {
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"mips"
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} else if cfg!(target_arch = "powerpc64") {
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"powerpc64"
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} else if cfg!(target_arch = "powerpc") {
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"powerpc"
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} else {
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"unknown"
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}.to_string()
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}
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pub fn zeroize(object: impl Zeroize) {
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let mut object = object;
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object.zeroize();
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}
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pub fn read_line(ln: &str) {
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print_ex!("{}", ln);
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io::stdout().flush().ok();
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let mut buff = String::new();
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let _ = io::stdin().read_line(&mut buff).expect("Read line from stdin");
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}
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pub fn ratio(numerator: u64, denominator: u64) -> String {
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if denominator == 0 {
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return "∞".to_string();
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}
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let r = (numerator * 10000) / denominator;
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format!("{:.2}", r as f64 / 100f64)
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}
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#[test]
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fn test_simple_kdf() {
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assert_eq!("30edbc354e8cf656adcddbeefbf3f5073372cdc42e4eca2e797bda8abebb6a05",
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hex::encode(simple_kdf(b"")));
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assert_eq!("0624d2a57bcb50f70aa19bab9fa75af1ca66cc701c341df865d430e2e6d9d936",
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hex::encode(simple_kdf(b"hello")));
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assert_eq!("43367d255eddedc3c84b692b68de6d3d21da28caad6abd20ed85a4f2c89706ad",
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hex::encode(simple_kdf(b"hello world")));
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}
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