use std::error::Error; use native_tls::{Protocol, TlsConnector}; use lettre::{EmailTransport, SmtpTransport, ClientTlsParameters, ClientSecurity}; use lettre::smtp::{ConnectionReuseParameters, SmtpTransportBuilder}; use lettre::smtp::authentication::Credentials; use lettre_email::EmailBuilder; use MailConfig; fn mailer(config: &MailConfig) -> SmtpTransport { let client_security = if config.smtp_ssl { let mut tls_builder = TlsConnector::builder().unwrap(); tls_builder.supported_protocols(&[Protocol::Tlsv11, Protocol::Tlsv12]).unwrap(); ClientSecurity::Required( ClientTlsParameters::new(config.smtp_host.to_owned(), tls_builder.build().unwrap()) ) } else { ClientSecurity::None }; let smtp_transport = SmtpTransportBuilder::new( (config.smtp_host.to_owned().as_str(), config.smtp_port), client_security ).unwrap(); let smtp_transport = match (&config.smtp_username, &config.smtp_password) { (Some(username), Some(password)) => { smtp_transport.credentials(Credentials::new(username.to_owned(), password.to_owned())) }, (_, _) => smtp_transport, }; smtp_transport .smtp_utf8(true) .connection_reuse(ConnectionReuseParameters::NoReuse) .build() } pub fn send_password_hint(address: &str, hint: &str, config: &MailConfig) -> Result<(), String> { let body = format!( "You (or someone) recently requested your master password hint.\n\n\ Your hint is: \"{}\"\n\n\ If you did not request your master password hint you can safely ignore this email.\n", hint); let email = EmailBuilder::new() .to(address) .from((config.smtp_from.to_owned(), "Bitwarden-rs")) .subject("Your Master Password Hint") .body(body) .build().unwrap(); match mailer(config).send(&email) { Ok(_) => Ok(()), Err(e) => Err(e.description().to_string()), } }