Files
oss-backupd/src/main.rs
2020-03-30 00:48:57 +08:00

275 lines
11 KiB
Rust

#[macro_use]
extern crate lazy_static;
extern crate sequoia_openpgp as openpgp;
pub mod oss_util;
pub mod pgp_util;
pub mod config_util;
pub mod zip_util;
pub mod opt;
use std::{
fs::{self, File},
time::SystemTime,
};
use rust_util::{
XResult,
util_msg::*,
iff,
};
use oss_util::*;
use config_util::*;
use pgp_util::OpenPGPTool;
use opt::{
Options,
};
// https://docs.sequoia-pgp.org/sequoia_openpgp/serialize/stream/struct.Encryptor.html
// https://gitlab.com/sequoia-pgp/sequoia/blob/master/openpgp/examples/generate-encrypt-decrypt.rs
fn main() -> XResult<()> {
let options = Options::new_and_parse_args()?;
if options.version {
print_message(MessageType::INFO, "ossbackupd v0.1.0");
return Ok(());
}
if options.verbose {
print_message(MessageType::DEBUG, &format!("Config is: {}", &options.config));
}
let config_json = match get_config_json(iff!(options.config.is_empty(), None, Some(&options.config)), options.verbose) {
None => return Ok(()),
Some(c) => c,
};
let oss_backupd_config = parse_config(&config_json);
if options.verbose {
print_message(MessageType::DEBUG, &format!("OSS backup config: {:?}", &oss_backupd_config));
}
let mut item_index = -1;
for config_item in &oss_backupd_config.items {
item_index += 1;
if options.verbose {
print_message(MessageType::DEBUG, &format!("Process config item index: {}, config: {:?}", item_index, config_item));
}
let encrypt_pubkey_file = match &config_item.encrypt_pubkey_file {
None => {
print_message(MessageType::ERROR, &format!("Config encrypt_pubkey_file not found, at item index: {}", item_index));
continue;
},
Some(encrypt_pubkey_file) => encrypt_pubkey_file,
};
if options.verbose {
print_message(MessageType::DEBUG, &format!("Encrypt pubkey file: {}", encrypt_pubkey_file));
}
let target = match &config_item.target {
None => {
print_message(MessageType::ERROR, &format!("Config target not found, at item index: {}", item_index));
continue;
},
Some(target) => target,
};
if options.verbose {
print_message(MessageType::DEBUG, &format!("Target file: {}", iff!(target.is_empty(), "<empty>", target)));
}
let oss_config = match &config_item.oss_config {
None => {
print_message(MessageType::ERROR, &format!("Config oss_config not found, at item index: {}", item_index));
continue;
},
Some(oss_config) => oss_config,
};
let endpoint = match &oss_config.endpoint {
None => {
print_message(MessageType::ERROR, &format!("Config oss_config#endpoint not found, at item index: {}", item_index));
continue;
}
Some(endpoint) => endpoint,
};
if options.verbose {
print_message(MessageType::DEBUG, &format!("Endpoint: {}", endpoint));
}
let access_key_id = match &oss_config.access_key_id {
None => {
print_message(MessageType::ERROR, &format!("Config oss_config#access_key_id not found, at item index: {}", item_index));
continue;
},
Some(access_key_id) => access_key_id,
};
if options.verbose {
print_message(MessageType::DEBUG, &format!("Access key id: {}", access_key_id));
}
let access_key_secret = match &oss_config.access_key_secret {
None => {
print_message(MessageType::ERROR, &format!("Config oss_config#access_key_secret not found, at item index: {}", item_index));
continue;
},
Some(access_key_secret) => access_key_secret,
};
let bucket = match &oss_config.bucket {
None => {
print_message(MessageType::ERROR, &format!("Config oss_config#bucket not found, at item index: {}", item_index));
continue;
},
Some(bucket) => bucket,
};
if options.verbose {
print_message(MessageType::DEBUG, &format!("Bucket: {}", bucket));
}
let path = &match &oss_config.path {
None => format!("default_path_at_{}", item_index),
Some(path) => path.to_owned(),
};
if options.verbose {
print_message(MessageType::DEBUG, &format!("Path: {}", path));
}
let oss_client = OSSClient::new(endpoint, access_key_id, access_key_secret);
let default_limit = 10_usize; // TODO read from config!
let meta_file_name = &format!("{}/ossbackupd_meta_{}_{}.json", &oss_backupd_config.get_prefix(), &oss_backupd_config.get_host(), &config_item.get_file_name());
let new_file = format!("{}/{}", path, config_item.make_oss_key(&oss_backupd_config, "gpg"));
if options.verbose {
print_message(MessageType::DEBUG, &format!("Default limit: {}", default_limit));
print_message(MessageType::DEBUG, &format!("Meta file name: {}", meta_file_name));
print_message(MessageType::DEBUG, &format!("New backup file: {}", new_file));
}
let open_pgp_tool = match OpenPGPTool::from_file(encrypt_pubkey_file) {
Err(e) => {
print_message(MessageType::ERROR, &format!("Error in load pgp file: {}, at item index: {}", e, item_index));
continue;
},
Ok(open_pgp_tool) => open_pgp_tool,
};
let temp_zip_file = &format!("temp_file_{}.zip", SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap().as_secs());
let temp_pgp_file = &format!("temp_file_{}.gpg", SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap().as_secs());
if options.verbose {
print_message(MessageType::DEBUG, &format!("Compress file: {} -> {}", target, temp_zip_file));
}
if let Err(e) = zip_util::zip_file(target, temp_zip_file) {
print_message(MessageType::ERROR, &format!("Error in zip file: {}, at item index: {}", e, item_index));
continue;
};
if options.verbose {
print_message(MessageType::DEBUG, &format!("Encrypt file: {} -> {}", temp_zip_file, temp_pgp_file));
}
if let Err(e) = open_pgp_tool.encrypt_file(temp_zip_file, temp_pgp_file, false) {
print_message(MessageType::ERROR, &format!("Error in encrypt file: {}, at item index: {}", e, item_index));
fs::remove_file(temp_zip_file).ok();
continue;
};
let file_temp_pgp_file = match File::open(temp_pgp_file) {
Err(e) => {
print_message(MessageType::ERROR, &format!("Error in open file: {}, at item index: {}", e, item_index));
fs::remove_file(temp_zip_file).ok();
fs::remove_file(temp_pgp_file).ok();
continue;},
Ok(file_temp_pgp_file) => file_temp_pgp_file,
};
if options.verbose {
print_message(MessageType::DEBUG, &format!("Upload file: {}", temp_pgp_file));
}
if let Err(e) = oss_client.put_file(bucket, &new_file, 1000, file_temp_pgp_file) {
print_message(MessageType::ERROR, &format!("Error in encrypt file: {}, at item index: {}", e, item_index));
fs::remove_file(temp_zip_file).ok();
fs::remove_file(temp_pgp_file).ok();
continue;
}
if options.verbose {
print_message(MessageType::DEBUG, &format!("Processing meta file: {}", meta_file_name));
}
match process_oss_files(&oss_client, bucket, path, meta_file_name, &new_file, default_limit) {
Err(e) => {
print_message(MessageType::ERROR, &format!("Error: {}, at item index: {}", e, item_index));
},
Ok(_) => {
print_message(MessageType::OK, &format!("Success, at item index: {}", item_index));
},
};
fs::remove_file(temp_zip_file).ok();
fs::remove_file(temp_pgp_file).ok();
}
print_message(MessageType::OK, "Backup all file(s) finished!");
Ok(())
}
pub fn process_oss_files(oss_client: &OSSClient, bucket_name: &str, path: &str, meta_file_name: &str, new_file: &str, limit: usize) -> XResult<()> {
let meta_file_key = &format!("{}/{}", path, meta_file_name);
if *opt::IS_DEBUG {
print_message(MessageType::DEBUG, &format!("Read meta file: {}", meta_file_key));
}
let meta_file_content = match oss_client.get_file_content(bucket_name, meta_file_key)? {
None => "[]".to_string(),
Some(c) => c,
};
if *opt::IS_DEBUG {
print_message(MessageType::DEBUG, &format!("Read meta file content: {}", &meta_file_content));
}
let (removed_file, new_meta_file_content) = process_new_backup_file(&meta_file_content, new_file, limit)?;
if *opt::IS_DEBUG {
print_message(MessageType::DEBUG, &format!("Processed meta file content: {}", &new_meta_file_content));
}
oss_client.put_file_content(bucket_name, meta_file_key, &new_meta_file_content)?;
if !removed_file.is_empty() {
for rm_file in removed_file {
print_message(MessageType::INFO, &format!("Remove OSS key: {}", &rm_file));
oss_client.delete_file(bucket_name, &rm_file)?;
}
}
Ok(())
}
pub fn process_new_backup_file(backup_content_json: &str, new_item: &str, limit: usize) -> XResult<(Vec<String>, String)> {
let mut removed_vec: Vec<String> = vec![];
let mut parsed_vec = parse_json_array(backup_content_json)?;
while parsed_vec.len() + 1 > limit {
removed_vec.push(parsed_vec.remove(0));
}
parsed_vec.push(new_item.to_string());
let stringifyed_json = stringity_json_array(&parsed_vec)?;
Ok((removed_vec, stringifyed_json.to_string()))
}
// stringify JSON array
pub fn stringity_json_array(vec: &Vec<String>) -> XResult<String> {
let mut json_arr = json::JsonValue::new_array();
for v in vec {
json_arr.push(json::JsonValue::from(v.as_str()))?;
}
Ok(json::stringify_pretty(json_arr, 4))
}
// parse JSON array
pub fn parse_json_array(arr: &str) -> XResult<Vec<String>> {
let mut vec: Vec<String> = vec![];
if arr != "" {
let json_arr = &json::parse(&arr)?;
if json_arr.is_array() {
for a in json_arr.members() {
match a.as_str() {
None => (),
Some(s) => vec.push(s.to_string()),
};
}
}
}
Ok(vec)
}