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extern crate users;
extern crate hex;
use std::io;
use std::fs;
use std::os::unix::fs::PermissionsExt;
use std::os::linux::fs::MetadataExt;
use std::io::prelude::*;
use walkdir::DirEntry;
use chrono::prelude::DateTime;
use chrono::{Utc};
use crypto_hash::{Algorithm, Hasher};
use serde_yaml;
fn str_value(s: &str) -> serde_yaml::Value {
serde_yaml::to_value(s).unwrap()
}
fn int_value(i: u64) -> serde_yaml::Value {
serde_yaml::to_value(i).unwrap()
}
pub fn name(e: &DirEntry) -> serde_yaml::Value {
str_value(&e.path().to_string_lossy())
}
pub fn mtime(e: &DirEntry) -> serde_yaml::Value {
let meta = e.metadata().unwrap();
let mtime = meta.modified().unwrap();
let datetime = DateTime::<Utc>::from(mtime);
let mtime = datetime.format("%Y-%m-%d %H:%M:%S.%f %z").to_string();
str_value(&mtime)
}
pub fn mode(e: &DirEntry) -> serde_yaml::Value {
let meta = e.metadata().unwrap();
str_value(&format!("{:o}", meta.permissions().mode()))
}
pub fn inode(e: &DirEntry) -> serde_yaml::Value {
let meta = e.metadata().unwrap();
int_value(meta.st_ino())
}
pub fn dev(e: &DirEntry) -> serde_yaml::Value {
let meta = e.metadata().unwrap();
int_value(meta.st_dev())
}
pub fn nlink(e: &DirEntry) -> serde_yaml::Value {
let meta = e.metadata().unwrap();
int_value(meta.st_nlink())
}
pub fn size(e: &DirEntry) -> serde_yaml::Value {
let meta = e.metadata().unwrap();
int_value(meta.len())
}
pub fn uid(e: &DirEntry) -> serde_yaml::Value {
let meta = e.metadata().unwrap();
int_value(meta.st_uid() as u64)
}
pub fn gid(e: &DirEntry) -> serde_yaml::Value {
let meta = e.metadata().unwrap();
int_value(meta.st_gid() as u64)
}
pub fn username(e: &DirEntry) -> serde_yaml::Value {
let meta = e.metadata().unwrap();
if let Some(u) = users::get_user_by_uid(meta.st_uid()) {
str_value(u.name())
} else {
str_value("unknown user")
}
}
pub fn group(e: &DirEntry) -> serde_yaml::Value {
let meta = e.metadata().unwrap();
if let Some(g) = users::get_group_by_gid(meta.st_gid()) {
str_value(g.name())
} else {
str_value("unknown group")
}
}
pub fn sha256(e: &DirEntry) -> serde_yaml::Value {
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();
str_value(&hex::encode(digest))
} else {
str_value("can't read file")
}
}
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