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use std::env;
use std::io;
use std::fs;
use std::os::unix::fs::PermissionsExt;
use std::os::linux::fs::MetadataExt;
use std::io::prelude::*;
extern crate walkdir;
use walkdir::{WalkDir, DirEntry};
extern crate users;
extern crate chrono;
use chrono::prelude::DateTime;
use chrono::{Utc};
extern crate crypto_hash;
use crypto_hash::{Algorithm, Hasher};
extern crate hex;
fn main() -> io::Result<()> {
for dirname in env::args().skip(1) {
for e in WalkDir::new(&dirname).into_iter().filter_map(|e| e.ok()) {
write_info(&e);
}
}
Ok(())
}
fn write_info(e: &DirEntry) {
println!("Name: {}", format_name(e));
println!("Mtime: {}", format_mtime(e));
println!("Mode: {}", format_mode(e));
println!("Ino: {}", format_inode(e));
println!("Dev: {}", format_dev(e));
println!("Nlink: {}", format_nlink(e));
println!("Size: {}", format_size(e));
println!("Uid: {}", format_uid(e));
println!("Username: {}", format_username(e));
println!("Gid: {}", format_gid(e));
println!("Group: {}", format_group(e));
println!("SHA256: {}", format_sha256(e));
println!("");
}
fn format_name(e: &DirEntry) -> String {
e.path().to_string_lossy().to_string()
}
fn format_mtime(e: &DirEntry) -> String {
let meta = e.metadata().unwrap();
let mtime = meta.modified().unwrap();
let datetime = DateTime::<Utc>::from(mtime);
datetime.format("%Y-%m-%d %H:%M:%S.%f %z").to_string()
}
fn format_mode(e: &DirEntry) -> String {
let meta = e.metadata().unwrap();
let mode = meta.permissions().mode();
format!("{:06o}", mode)
}
fn format_inode(e: &DirEntry) -> String {
let meta = e.metadata().unwrap();
format!("{}", meta.st_ino())
}
fn format_dev(e: &DirEntry) -> String {
let meta = e.metadata().unwrap();
format!("{}", meta.st_dev())
}
fn format_nlink(e: &DirEntry) -> String {
let meta = e.metadata().unwrap();
format!("{}", meta.st_nlink())
}
fn format_size(e: &DirEntry) -> String {
let meta = e.metadata().unwrap();
format!("{}", meta.len())
}
fn format_uid(e: &DirEntry) -> String {
let meta = e.metadata().unwrap();
format!("{}", meta.st_uid())
}
fn format_gid(e: &DirEntry) -> String {
let meta = e.metadata().unwrap();
format!("{}", meta.st_gid())
}
fn format_username(e: &DirEntry) -> String {
let meta = e.metadata().unwrap();
if let Some(u) = users::get_user_by_uid(meta.st_uid()) {
format!("{}", u.name())
} else {
format!("unknown user")
}
}
fn format_group(e: &DirEntry) -> String {
let meta = e.metadata().unwrap();
if let Some(g) = users::get_group_by_gid(meta.st_gid()) {
format!("{}", g.name())
} else {
format!("unknown group")
}
}
fn format_sha256(e: &DirEntry) -> String {
let mut ok = true;
let mut hasher = Hasher::new(Algorithm::SHA256);
if let Ok(file) = fs::File::open(e.path()) {
let mut reader = io::BufReader::new(file);
let mut buf = [0; 1024 * 1024];
let mut done = false;
while ok && !done{
if let Ok(n) = reader.read(&mut buf) {
if n == 0 {
done = true;
} else if let Err(_) = hasher.write(&buf[0..n]) {
ok = false;
}
} else {
ok = false;
}
}
} else {
ok = false;
}
if ok {
let digest = hasher.finish();
hex::encode(digest)
} else {
format!("can't read file")
}
}
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