Files
drawer/src/open_operation.rs
T
2026-05-14 19:30:28 -05:00

86 lines
2.8 KiB
Rust

use std::path::PathBuf;
use flate2::read::GzDecoder;
use clap::Parser;
use crate::error::DrawerError;
use crate::operation::Operation;
use crate::utils::*;
#[derive(Parser, Debug, PartialEq)]
pub struct OpenOperation {
pub drawer_file: PathBuf,
pub target_path: Option<PathBuf>,
#[arg(short = 'i')]
pub key: Option<PathBuf>,
#[arg(short = 'f')]
pub force: bool,
}
fn single_file_entry(data: &[u8]) -> Option<PathBuf> {
let cursor = std::io::Cursor::new(data);
let gz = GzDecoder::new(cursor);
let mut archive = tar::Archive::new(gz);
let mut entries = archive.entries().ok()?;
let entry = entries.next()?.ok()?;
if !entry.header().entry_type().is_file() {
return None;
}
if entries.next().is_some() {
return None;
}
Some(entry.path().ok()?.into_owned())
}
impl Operation for OpenOperation {
fn validate(&self) -> Result<(), DrawerError> {
validate_drawer_extension(&self.drawer_file)?;
validate_ssh_key(&self.key)?;
validate_drawer_file_exists(&self.drawer_file)?;
Ok(())
}
fn perform(&self) -> Result<(), DrawerError> {
self.validate()?;
let encrypted = std::fs::read(&self.drawer_file)
.map_err(|_| DrawerError::DrawerFileNotFound(self.drawer_file.clone()))?;
let decrypted = decrypt(encrypted, &self.key, &self.drawer_file)?;
let sf = single_file_entry(&decrypted);
let target = self.target_path.as_ref().cloned()
.unwrap_or_else(|| default_target(&self.drawer_file, sf.as_deref()));
if self.target_path.is_none() {
println!("(assuming into {})", target.display());
}
if !self.force && target.exists() {
if target.is_file() {
return Err(DrawerError::TargetNotEmpty(target.clone()));
}
let mut entries = std::fs::read_dir(&target)
.map_err(|_| DrawerError::TargetInvalid(target.clone()))?;
if entries.next().is_some() {
return Err(DrawerError::TargetNotEmpty(target.clone()));
}
}
if sf.is_some() {
let cursor = std::io::Cursor::new(&decrypted);
let gz = GzDecoder::new(cursor);
let mut archive = tar::Archive::new(gz);
let mut entry = archive.entries()
.map_err(|_| DrawerError::UntarFailed)?
.next()
.ok_or(DrawerError::UntarFailed)?
.map_err(|_| DrawerError::UntarFailed)?;
entry.unpack(&target).map_err(|_| DrawerError::UntarFailed)?;
} else {
let cursor = std::io::Cursor::new(decrypted);
let gz = GzDecoder::new(cursor);
let mut archive = tar::Archive::new(gz);
archive.unpack(&target).map_err(|_| DrawerError::UntarFailed)?;
}
Ok(())
}
}