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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 users;
extern crate chrono;
use chrono::prelude::DateTime;
use chrono::{Utc};
extern crate crypto_hash;
use crypto_hash::{Algorithm, Hasher};
extern crate hex;
mod fswalk;
use fswalk::DirTree;
// Command line args are names of dirs, recursively list all files and
// dirs them
fn main() -> io::Result<()> {
for dirname in env::args().skip(1) {
let tree = DirTree::new(&dirname);
for entry in tree {
write_info(&entry.path(), &entry.metadata());
}
}
Ok(())
}
fn write_info(path: &str, meta: &fs::Metadata) {
println!("Name: {}", path);
println!("Mtime: {}", format_mtime(meta));
println!("Mode: {}", format_mode(meta));
println!("Ino: {}", format_inode(meta));
println!("Dev: {}", format_dev(meta));
println!("Nlink: {}", format_nlink(meta));
println!("Size: {}", format_size(meta));
println!("Uid: {}", format_uid(meta));
println!("Username: {}", format_username(meta));
println!("Gid: {}", format_gid(meta));
println!("Group: {}", format_group(meta));
println!("SHA256: {}", format_sha256(path));
println!("");
}
fn format_mtime(meta: &fs::Metadata) -> String {
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(meta: &fs::Metadata) -> String {
let mode = meta.permissions().mode();
format!("{:06o}", mode)
}
fn format_inode(meta: &fs::Metadata) -> String {
format!("{}", meta.st_ino())
}
fn format_dev(meta: &fs::Metadata) -> String {
format!("{}", meta.st_dev())
}
fn format_nlink(meta: &fs::Metadata) -> String {
format!("{}", meta.st_nlink())
}
fn format_size(meta: &fs::Metadata) -> String {
format!("{}", meta.len())
}
fn format_uid(meta: &fs::Metadata) -> String {
format!("{}", meta.st_uid())
}
fn format_gid(meta: &fs::Metadata) -> String {
format!("{}", meta.st_gid())
}
fn format_username(meta: &fs::Metadata) -> String {
if let Some(u) = users::get_user_by_uid(meta.st_uid()) {
format!("{}", u.name())
} else {
format!("unknown user")
}
}
fn format_group(meta: &fs::Metadata) -> String {
if let Some(g) = users::get_group_by_gid(meta.st_gid()) {
format!("{}", g.name())
} else {
format!("unknown group")
}
}
fn format_sha256(filename: &str) -> String {
let mut ok = true;
let mut hasher = Hasher::new(Algorithm::SHA256);
if let Ok(file) = fs::File::open(filename) {
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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