168 lines
5.6 KiB
Rust
168 lines
5.6 KiB
Rust
/*
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* This file is part of mailpot
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*
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* Copyright 2020 - Manos Pitsidianakis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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use std::{
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io::{Read, Write},
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os::unix::fs::PermissionsExt,
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path::{Path, PathBuf},
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};
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use chrono::prelude::*;
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use super::errors::*;
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/// How to send e-mail.
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#[derive(Debug, Serialize, Deserialize, Clone)]
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#[serde(tag = "type", content = "value")]
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pub enum SendMail {
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/// A `melib` configuration for talking to an SMTP server.
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Smtp(melib::smtp::SmtpServerConf),
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/// A plain shell command passed to `sh -c` with the e-mail passed in the
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/// stdin.
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ShellCommand(String),
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}
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/// The configuration for the mailpot database and the mail server.
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#[derive(Debug, Serialize, Deserialize, Clone)]
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pub struct Configuration {
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/// How to send e-mail.
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pub send_mail: SendMail,
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/// The location of the sqlite3 file.
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pub db_path: PathBuf,
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/// The directory where data are stored.
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pub data_path: PathBuf,
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/// Instance administrators (List of e-mail addresses). Optional.
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#[serde(default)]
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pub administrators: Vec<String>,
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}
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impl Configuration {
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/// Create a new configuration value from a given database path value.
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///
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/// If you wish to create a new database with this configuration, use
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/// [`Connection::open_or_create_db`](crate::Connection::open_or_create_db).
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/// To open an existing database, use
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/// [`Database::open_db`](crate::Connection::open_db).
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pub fn new(db_path: impl Into<PathBuf>) -> Self {
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let db_path = db_path.into();
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Self {
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send_mail: SendMail::ShellCommand("/usr/bin/false".to_string()),
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data_path: db_path
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.parent()
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.map(Path::to_path_buf)
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.unwrap_or_else(|| db_path.clone()),
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administrators: vec![],
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db_path,
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}
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}
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/// Deserialize configuration from TOML file.
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pub fn from_file<P: AsRef<Path>>(path: P) -> Result<Self> {
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let path = path.as_ref();
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let mut s = String::new();
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let mut file = std::fs::File::open(path)
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.with_context(|| format!("Configuration file {} not found.", path.display()))?;
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file.read_to_string(&mut s)
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.with_context(|| format!("Could not read from file {}.", path.display()))?;
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let config: Self = toml::from_str(&s)
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.map_err(anyhow::Error::from)
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.with_context(|| {
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format!(
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"Could not parse configuration file `{}` successfully: ",
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path.display()
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)
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})?;
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Ok(config)
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}
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/// The saved data path.
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pub fn data_directory(&self) -> &Path {
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self.data_path.as_path()
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}
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/// The sqlite3 database path.
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pub fn db_path(&self) -> &Path {
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self.db_path.as_path()
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}
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/// Save message to a custom path.
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pub fn save_message_to_path(&self, msg: &str, mut path: PathBuf) -> Result<PathBuf> {
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if path.is_dir() {
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let now = Local::now().timestamp();
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path.push(format!("{}-failed.eml", now));
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}
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debug_assert!(path != self.db_path());
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let mut file = std::fs::File::create(&path)
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.with_context(|| format!("Could not create file {}.", path.display()))?;
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let metadata = file
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.metadata()
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.with_context(|| format!("Could not fstat file {}.", path.display()))?;
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let mut permissions = metadata.permissions();
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permissions.set_mode(0o600); // Read/write for owner only.
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file.set_permissions(permissions)
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.with_context(|| format!("Could not chmod 600 file {}.", path.display()))?;
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file.write_all(msg.as_bytes())
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.with_context(|| format!("Could not write message to file {}.", path.display()))?;
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file.flush()
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.with_context(|| format!("Could not flush message I/O to file {}.", path.display()))?;
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Ok(path)
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}
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/// Save message to the data directory.
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pub fn save_message(&self, msg: String) -> Result<PathBuf> {
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self.save_message_to_path(&msg, self.data_directory().to_path_buf())
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}
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/// Serialize configuration to a TOML string.
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pub fn to_toml(&self) -> String {
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toml::Value::try_from(self)
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.expect("Could not serialize config to TOML")
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.to_string()
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}
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}
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#[cfg(test)]
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mod tests {
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use tempfile::TempDir;
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use super::*;
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#[test]
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fn test_config_parse_error() {
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let tmp_dir = TempDir::new().unwrap();
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let conf_path = tmp_dir.path().join("conf.toml");
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std::fs::write(&conf_path, b"afjsad skas as a as\n\n\n\n\t\x11\n").unwrap();
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assert_eq!(
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Configuration::from_file(&conf_path)
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.unwrap_err()
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.display_chain()
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.to_string(),
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format!(
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"[1] Could not parse configuration file `{}` successfully: Caused by:\n[2] \
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Error: expected an equals, found an identifier at line 1 column 8\n",
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conf_path.display()
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),
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);
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}
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}
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