use lettre::smtp::authentication::Credentials; use lettre::smtp::ConnectionReuseParameters; use lettre::{ClientSecurity, ClientTlsParameters, SmtpClient, SmtpTransport, Transport}; use lettre_email::EmailBuilder; use native_tls::{Protocol, TlsConnector}; use crate::api::EmptyResult; use crate::auth::{encode_jwt, generate_invite_claims}; use crate::config::MailConfig; use crate::error::Error; use crate::CONFIG; fn mailer(config: &MailConfig) -> SmtpTransport { let client_security = if config.smtp_ssl { let tls = TlsConnector::builder() .min_protocol_version(Some(Protocol::Tlsv11)) .build() .unwrap(); ClientSecurity::Required(ClientTlsParameters::new(config.smtp_host.clone(), tls)) } else { ClientSecurity::None }; let smtp_client = SmtpClient::new((config.smtp_host.as_str(), config.smtp_port), client_security).unwrap(); let smtp_client = match (&config.smtp_username, &config.smtp_password) { (Some(user), Some(pass)) => smtp_client.credentials(Credentials::new(user.clone(), pass.clone())), _ => smtp_client, }; smtp_client .smtp_utf8(true) .connection_reuse(ConnectionReuseParameters::NoReuse) .transport() } fn get_text(template_name: &'static str, data: serde_json::Value) -> Result<(String, String), Error> { let text = CONFIG.render_template(template_name, &data)?; let mut text_split = text.split(""); let subject = match text_split.next() { Some(s) => s.trim().to_string(), None => err!("Template doesn't contain subject"), }; let body = match text_split.next() { Some(s) => s.trim().to_string(), None => err!("Template doesn't contain body"), }; Ok((subject, body)) } pub fn send_password_hint(address: &str, hint: Option, config: &MailConfig) -> EmptyResult { let template_name = if hint.is_some() { "email/pw_hint_some" } else { "email/pw_hint_none" }; let (subject, body) = get_text(template_name, json!({ "hint": hint }))?; send_email(&address, &subject, &body, &config) } pub fn send_invite( address: &str, uuid: &str, org_id: Option, org_user_id: Option, org_name: &str, invited_by_email: Option, config: &MailConfig, ) -> EmptyResult { let claims = generate_invite_claims( uuid.to_string(), String::from(address), org_id.clone(), org_user_id.clone(), invited_by_email.clone(), ); let invite_token = encode_jwt(&claims); let (subject, body) = get_text( "email/send_org_invite", json!({ "url": CONFIG.domain(), "org_id": org_id.unwrap_or("_".to_string()), "org_user_id": org_user_id.unwrap_or("_".to_string()), "email": address, "org_name": org_name, "token": invite_token, }), )?; send_email(&address, &subject, &body, &config) } pub fn send_invite_accepted(new_user_email: &str, address: &str, org_name: &str, config: &MailConfig) -> EmptyResult { let (subject, body) = get_text( "email/invite_accepted", json!({ "url": CONFIG.domain(), "email": new_user_email, "org_name": org_name, }), )?; send_email(&address, &subject, &body, &config) } pub fn send_invite_confirmed(address: &str, org_name: &str, config: &MailConfig) -> EmptyResult { let (subject, body) = get_text( "email/invite_confirmed", json!({ "url": CONFIG.domain(), "org_name": org_name, }), )?; send_email(&address, &subject, &body, &config) } fn send_email(address: &str, subject: &str, body: &str, config: &MailConfig) -> EmptyResult { let email = EmailBuilder::new() .to(address) .from((config.smtp_from.clone(), config.smtp_from_name.clone())) .subject(subject) .header(("Content-Type", "text/html")) .body(body) .build() .map_err(|e| Error::new("Error building email", e.to_string()))?; mailer(config) .send(email.into()) .map_err(|e| Error::new("Error sending email", e.to_string())) .and(Ok(())) }