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use crate::config::typ::{EndecConfig, Extension};
use crate::files::checksum::calculate_checksum;
use crate::files::compress::compress_file;
use crate::files::delete::delete_input_file;
use crate::files::file_meta::inspect_files;
use crate::files::reading::{open_reader, read_file};
use crate::files::write_output::write_output_file;
use crate::header::strategy::get_current_version_strategy;
use crate::header::Header;
use crate::key::stretch::stretch_key;
use crate::key::Salt;
use crate::progress::indicatif::IndicatifProgress;
use crate::progress::log::LogProgress;
use crate::progress::silent::SilentProgress;
use crate::progress::Progress;
use crate::symmetric::encrypt::encrypt_file;
use crate::util::version::get_current_version;
use crate::{EncryptConfig, FedResult, Verbosity};
pub fn encrypt(config: &EncryptConfig) -> FedResult<()> {
let version = get_current_version();
let strategy = get_current_version_strategy(config.debug());
let files_info = inspect_files(
config.files(),
config.verbosity(),
config.overwrite(),
Extension::Add(config.output_extension()),
config.output_dir(),
)?;
let mut progress: Box<dyn Progress> = match config.verbosity() {
Verbosity::Quiet => Box::new(SilentProgress::new()),
Verbosity::Normal => Box::new(IndicatifProgress::new_enc_strategy(
&strategy,
&files_info,
config.delete_input(),
config.verbosity(),
)),
Verbosity::Debug => Box::new(LogProgress::new()),
};
let salt = Salt::generate_random()?;
let stretched_key = stretch_key(
config.raw_key(),
&salt,
strategy.stretch_count,
&strategy.key_hash_algorithms,
&mut |alg| progress.start_stretch_alg(&alg, None),
);
for file in &files_info {
let mut reader = open_reader(&file, config.verbosity())?;
let data = read_file(
&mut reader,
&file.path_str(),
file.size_kb,
config.verbosity(),
&mut || progress.start_read_for_file(&file),
)?;
let checksum = calculate_checksum(&data, &mut || progress.start_checksum_for_file(&file));
let small = compress_file(data, &strategy.compression_algorithm, &mut |alg| {
progress.start_compress_alg_for_file(&alg, &file)
})?;
let secret = encrypt_file(
small,
&stretched_key,
&salt,
&strategy.symmetric_algorithms,
&mut |alg| progress.start_sym_alg_for_file(&alg, &file),
);
let header = Header::new(version.clone(), salt.clone(), checksum)?;
if !config.dry_run() {
write_output_file(config, &file, &secret, Some(&header), &mut || {
progress.start_write_for_file(&file)
})?;
delete_input_file(
config.delete_input(),
file,
&mut || progress.start_shred_input_for_file(&file),
config.verbosity(),
)?;
} else if !config.quiet() {
progress.start_write_for_file(&file);
println!(
"successfully encrypted '{}' ({} kb); not saving to '{}' because of dry-run",
file.path_str(),
secret.len() / 1024,
&file.out_pth.to_string_lossy(),
);
}
}
progress.finish();
if !config.quiet() {
println!("encrypted {} files", files_info.len());
}
Ok(())
}
#[cfg(test)]
mod tests {
use ::std::fs;
use ::lazy_static::lazy_static;
use ::regex::Regex;
use tempfile::tempdir;
use crate::config::EncryptConfig;
use crate::encrypt;
use crate::files::scan::TEST_FILE_DIR;
use crate::header::strategy::Verbosity;
use crate::key::key::Key;
use crate::util::version::get_current_version;
lazy_static! {
static ref COMPAT_KEY: Key = Key::new(" LP0y#shbogtwhGjM=*jFFZPmNd&qBO+ ");
static ref COMPAT_FILE_RE: Regex = Regex::new(r"^original_v(\d+\.\d+\.\d+).png$").unwrap();
}
#[test]
fn store_current_version() {
let dir = tempdir().unwrap();
let version = get_current_version();
let in_pth = {
let mut p = TEST_FILE_DIR.clone();
p.push("original.png");
p
};
assert!(in_pth.exists());
let conf = EncryptConfig::new(
vec![in_pth],
COMPAT_KEY.clone(),
Verbosity::Debug,
true,
false,
Some(dir.path().to_owned()),
".enc".to_string(),
false,
);
let tmp_pth = {
let mut p = dir.into_path();
p.push("original.png.enc");
p
};
encrypt(&conf).unwrap();
assert!(tmp_pth.is_file(), "encrypted file was not created");
let store_pth = {
let mut p = TEST_FILE_DIR.clone();
p.push(format!("original_v{}.png.enc", version));
p
};
if !store_pth.exists() {
println!("storing file for new version {} as part of backward compatibility test files:\n{} -> {}",
version, &tmp_pth.to_string_lossy(), &store_pth.to_string_lossy());
fs::copy(&tmp_pth, &store_pth).unwrap();
}
println!(
"removing temporary file {} for version {}",
&tmp_pth.to_string_lossy(),
version
);
}
}