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use serde::{Deserialize, Serialize};
use std::fs::Metadata;
#[derive(
Debug, PartialEq, Eq, Copy, Clone, Serialize, Deserialize, Hash, Default,
)]
pub struct Permissions {
pub user_read: bool,
pub user_write: bool,
pub user_execute: bool,
pub group_read: bool,
pub group_write: bool,
pub group_execute: bool,
pub other_read: bool,
pub other_write: bool,
pub other_execute: bool,
pub sticky: bool,
pub setgid: bool,
pub setuid: bool,
}
impl<'a> From<&'a Metadata> for Permissions {
#[cfg(unix)]
fn from(meta: &Metadata) -> Self {
use std::os::unix::fs::PermissionsExt;
let bits = meta.permissions().mode();
let has_bit = |bit| bits & bit == bit;
Self {
user_read: has_bit(modes::USER_READ),
user_write: has_bit(modes::USER_WRITE),
user_execute: has_bit(modes::USER_EXECUTE),
group_read: has_bit(modes::GROUP_READ),
group_write: has_bit(modes::GROUP_WRITE),
group_execute: has_bit(modes::GROUP_EXECUTE),
other_read: has_bit(modes::OTHER_READ),
other_write: has_bit(modes::OTHER_WRITE),
other_execute: has_bit(modes::OTHER_EXECUTE),
sticky: has_bit(modes::STICKY),
setgid: has_bit(modes::SETGID),
setuid: has_bit(modes::SETUID),
}
}
#[cfg(windows)]
fn from(_: &Metadata) -> Self {
panic!("Cannot get permissions from metadata on Windows")
}
}
#[allow(trivial_numeric_casts)]
#[cfg(unix)]
mod modes {
pub type Mode = u32;
pub const USER_READ: Mode = libc::S_IRUSR as Mode;
pub const USER_WRITE: Mode = libc::S_IWUSR as Mode;
pub const USER_EXECUTE: Mode = libc::S_IXUSR as Mode;
pub const GROUP_READ: Mode = libc::S_IRGRP as Mode;
pub const GROUP_WRITE: Mode = libc::S_IWGRP as Mode;
pub const GROUP_EXECUTE: Mode = libc::S_IXGRP as Mode;
pub const OTHER_READ: Mode = libc::S_IROTH as Mode;
pub const OTHER_WRITE: Mode = libc::S_IWOTH as Mode;
pub const OTHER_EXECUTE: Mode = libc::S_IXOTH as Mode;
pub const STICKY: Mode = libc::S_ISVTX as Mode;
pub const SETGID: Mode = libc::S_ISGID as Mode;
pub const SETUID: Mode = libc::S_ISUID as Mode;
}