vaultwarden/src/mail.rs
2020-03-19 13:56:53 +01:00

321 lines
9.8 KiB
Rust

use lettre::smtp::authentication::Credentials;
use lettre::smtp::authentication::Mechanism as SmtpAuthMechanism;
use lettre::smtp::ConnectionReuseParameters;
use lettre::{
builder::{EmailBuilder, MimeMultipartType, PartBuilder},
ClientSecurity, ClientTlsParameters, SmtpClient, SmtpTransport, Transport,
};
use native_tls::{Protocol, TlsConnector};
use percent_encoding::{percent_encode, NON_ALPHANUMERIC};
use quoted_printable::encode_to_str;
use crate::api::EmptyResult;
use crate::auth::{encode_jwt, generate_delete_claims, generate_invite_claims, generate_verify_email_claims};
use crate::error::Error;
use crate::CONFIG;
use chrono::NaiveDateTime;
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
};
use std::time::Duration;
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,
};
let smtp_client = match CONFIG.smtp_auth_mechanism() {
Some(mechanism) => {
let correct_mechanism = format!("\"{}\"", crate::util::upcase_first(&mechanism.trim_matches('"')));
match serde_json::from_str::<SmtpAuthMechanism>(&correct_mechanism) {
Ok(auth_mechanism) => smtp_client.authentication_mechanism(auth_mechanism),
_ => panic!("Failure to parse mechanism. Is it proper Json? Eg. `\"Plain\"` not `Plain`"),
}
}
_ => smtp_client,
};
smtp_client
.smtp_utf8(true)
.timeout(Some(Duration::from_secs(CONFIG.smtp_timeout())))
.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)?;
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 {
let template_name = if hint.is_some() {
"email/pw_hint_some"
} else {
"email/pw_hint_none"
};
let (subject, body_html, body_text) = get_text(template_name, json!({ "hint": hint, "url": CONFIG.domain() }))?;
send_email(&address, &subject, &body_html, &body_text)
}
pub fn send_delete_account(address: &str, uuid: &str) -> EmptyResult {
let claims = generate_delete_claims(uuid.to_string());
let delete_token = encode_jwt(&claims);
let (subject, body_html, body_text) = get_text(
"email/delete_account",
json!({
"url": CONFIG.domain(),
"user_id": uuid,
"email": percent_encode(address.as_bytes(), NON_ALPHANUMERIC).to_string(),
"token": delete_token,
}),
)?;
send_email(&address, &subject, &body_html, &body_text)
}
pub fn send_verify_email(address: &str, uuid: &str) -> EmptyResult {
let claims = generate_verify_email_claims(uuid.to_string());
let verify_email_token = encode_jwt(&claims);
let (subject, body_html, body_text) = get_text(
"email/verify_email",
json!({
"url": CONFIG.domain(),
"user_id": uuid,
"email": percent_encode(address.as_bytes(), NON_ALPHANUMERIC).to_string(),
"token": verify_email_token,
}),
)?;
send_email(&address, &subject, &body_html, &body_text)
}
pub fn send_welcome(address: &str) -> EmptyResult {
let (subject, body_html, body_text) = get_text(
"email/welcome",
json!({
"url": CONFIG.domain(),
}),
)?;
send_email(&address, &subject, &body_html, &body_text)
}
pub fn send_welcome_must_verify(address: &str, uuid: &str) -> EmptyResult {
let claims = generate_verify_email_claims(uuid.to_string());
let verify_email_token = encode_jwt(&claims);
let (subject, body_html, body_text) = get_text(
"email/welcome_must_verify",
json!({
"url": CONFIG.domain(),
"user_id": uuid,
"token": verify_email_token,
}),
)?;
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(
uuid.to_string(),
String::from(address),
org_id.clone(),
org_user_id.clone(),
invited_by_email,
);
let invite_token = encode_jwt(&claims);
let (subject, body_html, body_text) = get_text(
"email/send_org_invite",
json!({
"url": CONFIG.domain(),
"org_id": org_id.unwrap_or_else(|| "_".to_string()),
"org_user_id": org_user_id.unwrap_or_else(|| "_".to_string()),
"email": percent_encode(address.as_bytes(), NON_ALPHANUMERIC).to_string(),
"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(
"email/invite_accepted",
json!({
"url": CONFIG.domain(),
"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(
"email/invite_confirmed",
json!({
"url": CONFIG.domain(),
"org_name": org_name,
}),
)?;
send_email(&address, &subject, &body_html, &body_text)
}
pub fn send_new_device_logged_in(address: &str, ip: &str, dt: &NaiveDateTime, device: &str) -> EmptyResult {
use crate::util::upcase_first;
let device = upcase_first(device);
let datetime = dt.format("%A, %B %_d, %Y at %H:%M").to_string();
let (subject, body_html, body_text) = get_text(
"email/new_device_logged_in",
json!({
"url": CONFIG.domain(),
"ip": ip,
"device": device,
"datetime": datetime,
}),
)?;
send_email(&address, &subject, &body_html, &body_text)
}
pub fn send_token(address: &str, token: &str) -> EmptyResult {
let (subject, body_html, body_text) = get_text(
"email/twofactor_email",
json!({
"url": CONFIG.domain(),
"token": token,
}),
)?;
send_email(&address, &subject, &body_html, &body_text)
}
pub fn send_change_email(address: &str, token: &str) -> EmptyResult {
let (subject, body_html, body_text) = get_text(
"email/change_email",
json!({
"url": CONFIG.domain(),
"token": token,
}),
)?;
send_email(&address, &subject, &body_html, &body_text)
}
pub fn send_test(address: &str) -> EmptyResult {
let (subject, body_html, body_text) = get_text(
"email/smtp_test",
json!({
"url": CONFIG.domain(),
}),
)?;
send_email(&address, &subject, &body_html, &body_text)
}
fn send_email(address: &str, subject: &str, body_html: &str, body_text: &str) -> EmptyResult {
let address_split: Vec<&str> = address.rsplitn(2, '@').collect();
if address_split.len() != 2 {
err!("Invalid email address (no @)");
}
let domain_puny = match idna::domain_to_ascii_strict(address_split[0]) {
Ok(d) => d,
Err(_) => err!("Can't convert email domain to ASCII representation"),
};
let address = format!("{}@{}", address_split[1], domain_puny);
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);
let email = EmailBuilder::new()
.to(address)
.from((CONFIG.smtp_from().as_str(), CONFIG.smtp_from_name().as_str()))
.subject(subject)
.child(alternative.build())
.build()
.map_err(|e| Error::new("Error building email", e.to_string()))?;
let mut transport = mailer();
let result = transport.send(email);
// Explicitly close the connection, in case of error
transport.close();
result?;
Ok(())
}