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Merge pull request #1137 from BlackDex/smtp-multi-auth-mechanism

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Allow multiple SMTP Auth meganisms.
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Daniel García 2020-09-13 15:09:58 +02:00 committed by GitHub
commit 3c377d97dc
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3 changed files with 24 additions and 11 deletions
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3
.env.template
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@ -210,6 +210,9 @@
# SMTP_EXPLICIT_TLS=true # N.B. This variable configures Implicit TLS. It's currently mislabelled (see bug #851)
# SMTP_USERNAME=username
# SMTP_PASSWORD=password
## Defaults for SSL is "Plain" and "Login" and nothing for Non-SSL connections.
## Possible values: ["Plain", "Login", "Xoauth2"].
## Multiple options need to be separated by a comma ','.
# SMTP_AUTH_MECHANISM="Plain"
# SMTP_TIMEOUT=15

2
src/config.rs
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@ -400,7 +400,7 @@ make_config! {
smtp_username: String, true, option;
/// Password
smtp_password: Pass, true, option;
/// Json form auth mechanism |> Defaults for ssl is "Plain" and "Login" and nothing for non-ssl connections. Possible values: ["Plain", "Login", "Xoauth2"]
/// Json form auth mechanism |> Defaults for ssl is "Plain" and "Login" and nothing for non-ssl connections. Possible values: ["Plain", "Login", "Xoauth2"]. Multiple options need to be separated by a comma.
smtp_auth_mechanism: String, true, option;
/// SMTP connection timeout |> Number of seconds when to stop trying to connect to the SMTP server
smtp_timeout: u64, true, def, 15;

20
src/mail.rs
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@ -49,12 +49,22 @@ fn mailer() -> SmtpTransport {
let smtp_client = match CONFIG.smtp_auth_mechanism() {
Some(mechanism) => {
let correct_mechanism = format!("\"{}\"", crate::util::upcase_first(mechanism.trim_matches('"')));
let allowed_mechanisms = vec![SmtpAuthMechanism::Plain, SmtpAuthMechanism::Login, SmtpAuthMechanism::Xoauth2];
let mut selected_mechanisms = vec![];
for wanted_mechanism in mechanism.split(',') {
for m in &allowed_mechanisms {
if m.to_string().to_lowercase() == wanted_mechanism.trim_matches(|c| c == '"' || c == '\'' || c == ' ').to_lowercase() {
selected_mechanisms.push(m.clone());
}
}
};
// TODO: Allow more than one mechanism
match serde_json::from_str::<SmtpAuthMechanism>(&correct_mechanism) {
Ok(auth_mechanism) => smtp_client.authentication(vec![auth_mechanism]),
_ => panic!("Failure to parse mechanism. Is it proper Json? Eg. `\"Plain\"` not `Plain`"),
if !selected_mechanisms.is_empty() {
smtp_client.authentication(selected_mechanisms)
} else {
// Only show a warning, and return without setting an actual authentication mechanism
warn!("No valid SMTP Auth mechanism found for '{}', using default values", mechanism);
smtp_client
}
}
_ => smtp_client,