vaultwarden/src/mail.rs

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use lettre::smtp::authentication::Credentials;
use lettre::smtp::ConnectionReuseParameters;
use lettre::{ClientSecurity, ClientTlsParameters, SmtpClient, SmtpTransport, Transport};
use lettre_email::{EmailBuilder,PartBuilder,MimeMultipartType};
use native_tls::{Protocol, TlsConnector};
use quoted_printable::encode_to_str;
use crate::api::EmptyResult;
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use crate::auth::{encode_jwt, generate_invite_claims};
use crate::error::Error;
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use crate::CONFIG;
fn mailer() -> SmtpTransport {
let host = CONFIG.smtp_host().unwrap();
let client_security = if CONFIG.smtp_ssl() {
let tls = TlsConnector::builder()
.min_protocol_version(Some(Protocol::Tlsv11))
.build()
.unwrap();
let params = ClientTlsParameters::new(host.clone(), tls);
if CONFIG.smtp_explicit_tls() {
ClientSecurity::Wrapper(params)
} else {
ClientSecurity::Required(params)
}
} else {
ClientSecurity::None
};
let smtp_client = SmtpClient::new((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, String), Error> {
let (subject_html, body_html) = get_template(&format!("{}.html", template_name), &data)?;
let (_subject_text, body_text) = get_template(template_name, &data)?;
Ok((subject_html, body_html, body_text))
}
fn get_template(template_name: &str, data: &serde_json::Value) -> Result<(String, String), Error> {
let text = CONFIG.render_template(template_name, data)?;
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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<String>) -> EmptyResult {
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let template_name = if hint.is_some() {
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"email/pw_hint_some"
} else {
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"email/pw_hint_none"
};
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let (subject, body_html, body_text) = get_text(template_name, json!({ "hint": hint, "url": CONFIG.domain() }))?;
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send_email(&address, &subject, &body_html, &body_text)
}
pub fn send_invite(
address: &str,
uuid: &str,
org_id: Option<String>,
org_user_id: Option<String>,
org_name: &str,
invited_by_email: Option<String>,
) -> EmptyResult {
let claims = generate_invite_claims(
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uuid.to_string(),
String::from(address),
org_id.clone(),
org_user_id.clone(),
invited_by_email.clone(),
);
let invite_token = encode_jwt(&claims);
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let (subject, body_html, body_text) = get_text(
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"email/send_org_invite",
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json!({
"url": CONFIG.domain(),
"org_id": org_id.unwrap_or_else(|| "_".to_string()),
"org_user_id": org_user_id.unwrap_or_else(|| "_".to_string()),
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"email": address,
"org_name": org_name,
"token": invite_token,
}),
)?;
send_email(&address, &subject, &body_html, &body_text)
}
pub fn send_invite_accepted(new_user_email: &str, address: &str, org_name: &str) -> EmptyResult {
let (subject, body_html, body_text) = get_text(
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"email/invite_accepted",
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json!({
"url": CONFIG.domain(),
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"email": new_user_email,
"org_name": org_name,
}),
)?;
send_email(&address, &subject, &body_html, &body_text)
}
pub fn send_invite_confirmed(address: &str, org_name: &str) -> EmptyResult {
let (subject, body_html, body_text) = get_text(
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"email/invite_confirmed",
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json!({
"url": CONFIG.domain(),
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"org_name": org_name,
}),
)?;
send_email(&address, &subject, &body_html, &body_text)
}
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fn send_email(address: &str, subject: &str, body_html: &str, body_text: &str) -> EmptyResult {
let html = PartBuilder::new()
.body(encode_to_str(body_html))
.header(("Content-Type", "text/html; charset=utf-8"))
.header(("Content-Transfer-Encoding", "quoted-printable"))
.build();
let text = PartBuilder::new()
.body(encode_to_str(body_text))
.header(("Content-Type", "text/plain; charset=utf-8"))
.header(("Content-Transfer-Encoding", "quoted-printable"))
.build();
let alternative = PartBuilder::new()
.message_type(MimeMultipartType::Alternative)
.child(text)
.child(html);
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let email = EmailBuilder::new()
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.to(address)
.from((CONFIG.smtp_from().as_str(), CONFIG.smtp_from_name().as_str()))
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.subject(subject)
.child(alternative.build())
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.build()
.map_err(|e| Error::new("Error building email", e.to_string()))?;
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let mut transport = mailer();
let result = transport
.send(email.into())
.map_err(|e| Error::new("Error sending email", e.to_string()))
.and(Ok(()));
// Explicitly close the connection, in case of error
transport.close();
result
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}