166 lines
4.2 KiB
Rust
166 lines
4.2 KiB
Rust
use std::{
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collections::HashMap,
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error::Error,
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fs::{read_dir, DirEntry},
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net::TcpStream,
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path::PathBuf,
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vec::IntoIter,
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};
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use imap::Session;
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use rustls_connector::RustlsConnector;
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use crate::Message;
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pub(crate) trait EmailReader {
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fn read_rfc822_messages(&mut self) -> Box<IntoIter<Message>>;
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}
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pub(crate) struct DataDirectoryMessageReader {
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path: PathBuf,
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}
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impl DataDirectoryMessageReader {
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pub fn new(path: PathBuf) -> Self {
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DataDirectoryMessageReader { path }
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}
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}
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impl EmailReader for DataDirectoryMessageReader {
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fn read_rfc822_messages(&mut self) -> Box<IntoIter<Message>> {
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println!("Reading files in {}", &self.path.display());
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let reader = match read_dir(&self.path) {
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Ok(r) => r,
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Err(e) => {
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dbg!(e);
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return Box::new(Vec::new().into_iter());
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}
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};
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let items = reader
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.filter(|i| i.is_ok())
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.map(|i| i.unwrap() as DirEntry)
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.filter(|d| match d.path().extension() {
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Some(ext) => ext == "eml",
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None => false,
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})
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.filter_map(|i| {
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let uid = i
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.path()
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.file_stem()
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.unwrap()
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.to_owned()
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.into_string()
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.expect("Could not convert filename to string.")
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.split('_')
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.collect::<Vec<&str>>()[0]
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.trim_start_matches('0')
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.to_string();
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if let Ok(data) = std::fs::read(i.path()) {
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Some((uid, data))
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} else {
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None
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}
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})
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.map(|i| Message::new(i.0, i.1));
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let iter = items.collect::<Vec<Message>>().into_iter();
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Box::new(iter)
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}
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}
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pub struct ImapReader {
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host: String,
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port: u16,
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username: String,
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password: String,
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}
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impl ImapReader {
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pub fn new(host: String, port: u16, username: String, password: String) -> Self {
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ImapReader {
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host,
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port,
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username,
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password,
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}
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}
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fn connect(&self) -> Result<HashMap<String, Vec<u8>>, Box<dyn Error>> {
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let mut session = self.open_session()?;
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session.examine("INBOX")?;
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let items = match session.uid_search("ALL") {
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Ok(i) => i,
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Err(e) => return Err(Box::new(e)),
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};
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let mut msgs = HashMap::<String, Vec<u8>>::with_capacity(items.len());
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//println!("# of messages: {}", &items.len());
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for item in items {
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let msg = session.uid_fetch(&item.to_string(), "(BODY.PEEK[] UID)")?;
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let message = if let Some(m) = msg.iter().next() {
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m
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} else {
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continue;
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};
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let body = message.body().expect("Message did not have a body.");
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msgs.insert(item.to_string(), body.to_owned());
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}
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session.logout().expect("Could not log out");
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Ok(msgs)
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}
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fn open_session(
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&self,
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) -> Result<
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Session<
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rustls_connector::rustls::StreamOwned<
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rustls_connector::rustls::ClientConnection,
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TcpStream,
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>,
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>,
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Box<dyn Error + 'static>,
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> {
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let stream = TcpStream::connect((self.host.as_ref(), self.port))?;
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let tls = RustlsConnector::new_with_webpki_roots_certs();
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let tls_stream = tls.connect(&self.host, stream)?;
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let client = imap::Client::new(tls_stream);
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Ok(client
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.login(&self.username, &self.password)
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.map_err(|e| e.0)?)
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}
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}
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impl EmailReader for ImapReader {
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fn read_rfc822_messages(&mut self) -> Box<IntoIter<Message>> {
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let msgs = match self.connect() {
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Ok(m) => m,
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Err(e) => {
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dbg!(e);
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return Box::new(Vec::new().into_iter());
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}
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};
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let items = msgs
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.iter()
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.map(|i| Message::new(i.0.to_owned(), i.1.to_owned()));
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let iter = items.collect::<Vec<Message>>().into_iter();
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Box::new(iter)
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}
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}
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