Updated email processing.
- Added an option to enable smtp debugging via SMTP_DEBUG. This will trigger a trace of the smtp commands sent/received to/from the mail server. Useful when troubleshooting. - Added two options to ignore invalid certificates which either do not match at all, or only doesn't match the hostname. - Updated lettre to the latest alpha.4 version.
This commit is contained in:
BlackDex
parent
3fed323385
commit
6faaeaae66
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@ -242,9 +242,9 @@
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# SMTP_HOST=smtp.domain.tld
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# SMTP_FROM=bitwarden-rs@domain.tld
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# SMTP_FROM_NAME=Bitwarden_RS
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# SMTP_PORT=587
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# SMTP_SSL=true # (Explicit) - This variable by default configures Explicit STARTTLS, it will upgrade an insecure connection to a secure one. Unless SMTP_EXPLICIT_TLS is set to true.
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# SMTP_EXPLICIT_TLS=true # (Implicit) - N.B. This variable configures Implicit TLS. It's currently mislabelled (see bug #851) - SMTP_SSL Needs to be set to true for this option to work.
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# SMTP_PORT=587 # Ports 587 (submission) and 25 (smtp) are standard without encryption and with encryption via STARTTLS (Explicit TLS). Port 465 is outdated and used with Implicit TLS.
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# SMTP_SSL=true # (Explicit) - This variable by default configures Explicit STARTTLS, it will upgrade an insecure connection to a secure one. Unless SMTP_EXPLICIT_TLS is set to true. Either port 587 or 25 are default.
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# SMTP_EXPLICIT_TLS=true # (Implicit) - N.B. This variable configures Implicit TLS. It's currently mislabelled (see bug #851) - SMTP_SSL Needs to be set to true for this option to work. Usually port 465 is used here.
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# SMTP_USERNAME=username
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# SMTP_PASSWORD=password
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# SMTP_TIMEOUT=15
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@ -259,6 +259,22 @@
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## but might need to be changed in case it trips some anti-spam filters
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# HELO_NAME=
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## SMTP debugging
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## When set to true this will output very detailed SMTP messages.
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## WARNING: This could contain sensitive information like passwords and usernames! Only enable this during troubleshooting!
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# SMTP_DEBUG=false
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## Accept Invalid Hostnames
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## DANGEROUS: This option introduces significant vulnerabilities to man-in-the-middle attacks!
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## Only use this as a last resort if you are not able to use a valid certificate.
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# SMTP_ACCEPT_INVALID_HOSTNAMES=false
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## Accept Invalid Certificates
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## DANGEROUS: This option introduces significant vulnerabilities to man-in-the-middle attacks!
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## Only use this as a last resort if you are not able to use a valid certificate.
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## If the Certificate is valid but the hostname doesn't match, please use SMTP_ACCEPT_INVALID_HOSTNAMES instead.
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# SMTP_ACCEPT_INVALID_CERTS=false
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## Require new device emails. When a user logs in an email is required to be sent.
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## If sending the email fails the login attempt will fail!!
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# REQUIRE_DEVICE_EMAIL=false
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@ -33,12 +33,6 @@ dependencies = [
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"winapi 0.3.9",
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]
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[[package]]
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name = "arrayvec"
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version = "0.5.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "23b62fc65de8e4e7f52534fb52b0f3ed04746ae267519eef2a83941e8085068b"
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[[package]]
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name = "atty"
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version = "0.2.14"
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@ -131,6 +125,18 @@ version = "1.2.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
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[[package]]
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name = "bitvec"
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version = "0.19.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a7ba35e9565969edb811639dbebfe34edc0368e472c5018474c8eb2543397f81"
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dependencies = [
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"funty",
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"radium",
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"tap",
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"wyz",
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]
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[[package]]
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name = "bitwarden_rs"
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version = "1.0.0"
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@ -638,6 +644,12 @@ version = "0.3.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
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[[package]]
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name = "funty"
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version = "1.0.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "0ba62103ce691c2fd80fbae2213dfdda9ce60804973ac6b6e97de818ea7f52c8"
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[[package]]
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name = "futf"
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version = "0.1.4"
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@ -1144,9 +1156,9 @@ checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
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[[package]]
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name = "lettre"
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version = "0.10.0-alpha.3"
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version = "0.10.0-alpha.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e422b6c03563bc47db09bb61a8ece4f1462de131455beb96c091e2998fa316a2"
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checksum = "dc8c2fc7873920aca23647e5e86d44ff3f40bbc5a5efaab445c9eb0e001c9f71"
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dependencies = [
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"base64 0.13.0",
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"hostname",
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@ -1160,22 +1172,10 @@ dependencies = [
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"rand 0.7.3",
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"regex",
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"serde",
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"tracing",
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"uuid",
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]
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[[package]]
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name = "lexical-core"
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version = "0.7.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "db65c6da02e61f55dae90a0ae427b2a5f6b3e8db09f58d10efab23af92592616"
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dependencies = [
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"arrayvec",
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"bitflags",
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"cfg-if 0.1.10",
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"ryu",
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"static_assertions",
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]
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[[package]]
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name = "libc"
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version = "0.2.80"
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@ -1448,11 +1448,11 @@ checksum = "72ef4a56884ca558e5ddb05a1d1e7e1bfd9a68d9ed024c21704cc98872dae1bb"
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[[package]]
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name = "nom"
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version = "5.1.2"
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version = "6.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ffb4262d26ed83a1c0a33a38fe2bb15797329c85770da05e6b828ddb782627af"
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checksum = "4489ccc7d668957ddf64af7cd027c081728903afa6479d35da7e99bf5728f75f"
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dependencies = [
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"lexical-core",
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"bitvec",
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"memchr",
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"version_check 0.9.2",
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]
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@ -1978,6 +1978,12 @@ dependencies = [
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"scheduled-thread-pool",
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]
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[[package]]
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name = "radium"
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version = "0.5.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "941ba9d78d8e2f7ce474c015eea4d9c6d25b6a3327f9832ee29a4de27f91bbb8"
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[[package]]
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name = "rand"
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version = "0.4.6"
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@ -2617,12 +2623,6 @@ version = "0.4.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3015a7d0a5fd5105c91c3710d42f9ccf0abfb287d62206484dcc67f9569a6483"
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[[package]]
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name = "static_assertions"
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version = "1.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
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[[package]]
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name = "stdweb"
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version = "0.4.20"
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@ -2782,6 +2782,12 @@ dependencies = [
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"time 0.1.44",
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]
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[[package]]
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name = "tap"
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version = "1.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "36474e732d1affd3a6ed582781b3683df3d0563714c59c39591e8ff707cf078e"
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[[package]]
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name = "tempfile"
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version = "3.1.0"
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@ -3371,6 +3377,12 @@ dependencies = [
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"winapi-build",
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]
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[[package]]
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name = "wyz"
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version = "0.2.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "85e60b0d1b5f99db2556934e21937020776a5d31520bf169e851ac44e6420214"
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[[package]]
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name = "yansi"
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version = "0.5.0"
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@ -100,7 +100,7 @@ num-traits = "0.2.14"
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num-derive = "0.3.3"
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# Email libraries
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lettre = { version = "0.10.0-alpha.3", features = ["smtp-transport", "builder", "serde", "native-tls", "hostname"], default-features = false }
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lettre = { version = "0.10.0-alpha.4", features = ["smtp-transport", "builder", "serde", "native-tls", "hostname", "tracing"], default-features = false }
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newline-converter = "0.1.0"
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# Template library
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@ -413,29 +413,35 @@ make_config! {
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/// SMTP Email Settings
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smtp: _enable_smtp {
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/// Enabled
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_enable_smtp: bool, true, def, true;
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_enable_smtp: bool, true, def, true;
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/// Host
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smtp_host: String, true, option;
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smtp_host: String, true, option;
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/// Enable Secure SMTP |> (Explicit) - Enabling this by default would use STARTTLS (Standard ports 587 or 25)
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smtp_ssl: bool, true, def, true;
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smtp_ssl: bool, true, def, true;
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/// Force TLS |> (Implicit) - Enabling this would force the use of an SSL/TLS connection, instead of upgrading an insecure one with STARTTLS (Standard port 465)
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smtp_explicit_tls: bool, true, def, false;
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smtp_explicit_tls: bool, true, def, false;
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/// Port
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smtp_port: u16, true, auto, |c| if c.smtp_explicit_tls {465} else if c.smtp_ssl {587} else {25};
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smtp_port: u16, true, auto, |c| if c.smtp_explicit_tls {465} else if c.smtp_ssl {587} else {25};
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/// From Address
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smtp_from: String, true, def, String::new();
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smtp_from: String, true, def, String::new();
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/// From Name
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smtp_from_name: String, true, def, "Bitwarden_RS".to_string();
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smtp_from_name: String, true, def, "Bitwarden_RS".to_string();
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/// Username
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smtp_username: String, true, option;
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smtp_username: String, true, option;
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/// Password
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smtp_password: Pass, true, option;
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smtp_password: Pass, true, option;
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/// SMTP 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 ','.
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smtp_auth_mechanism: String, true, option;
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smtp_auth_mechanism: String, true, option;
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/// SMTP connection timeout |> Number of seconds when to stop trying to connect to the SMTP server
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smtp_timeout: u64, true, def, 15;
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smtp_timeout: u64, true, def, 15;
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/// Server name sent during HELO |> By default this value should be is on the machine's hostname, but might need to be changed in case it trips some anti-spam filters
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helo_name: String, true, option;
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helo_name: String, true, option;
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/// Enable SMTP debugging (Know the risks!) |> DANGEROUS: Enabling this will output very detailed SMTP messages. This could contain sensitive information like passwords and usernames! Only enable this during troubleshooting!
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smtp_debug: bool, true, def, false;
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/// Accept Invalid Certs (Know the risks!) |> DANGEROUS: Allow invalid certificates. This option introduces significant vulnerabilities to man-in-the-middle attacks!
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smtp_accept_invalid_certs: bool, true, def, false;
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/// Accept Invalid Hostnames (Know the risks!) |> DANGEROUS: Allow invalid hostnames. This option introduces significant vulnerabilities to man-in-the-middle attacks!
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smtp_accept_invalid_hostnames: bool, true, def, false;
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},
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/// Email 2FA Settings
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41
src/mail.rs
41
src/mail.rs
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@ -7,6 +7,7 @@ use percent_encoding::{percent_encode, NON_ALPHANUMERIC};
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use lettre::{
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message::{header, Mailbox, Message, MultiPart, SinglePart},
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transport::smtp::authentication::{Credentials, Mechanism as SmtpAuthMechanism},
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transport::smtp::client::{Tls, TlsParameters},
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transport::smtp::extension::ClientId,
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Address, SmtpTransport, Transport,
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};
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@ -22,21 +23,30 @@ fn mailer() -> SmtpTransport {
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use std::time::Duration;
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let host = CONFIG.smtp_host().unwrap();
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// Determine security
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let smtp_client = if CONFIG.smtp_ssl() {
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if CONFIG.smtp_explicit_tls() {
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SmtpTransport::relay(host.as_str())
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} else {
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SmtpTransport::starttls_relay(host.as_str())
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}
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} else {
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Ok(SmtpTransport::builder_dangerous(host.as_str()))
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};
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let smtp_client = smtp_client.unwrap()
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let smtp_client = SmtpTransport::builder_dangerous(host.as_str())
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.port(CONFIG.smtp_port())
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.timeout(Some(Duration::from_secs(CONFIG.smtp_timeout())));
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// Determine security
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let smtp_client = if CONFIG.smtp_ssl() {
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let mut tls_parameters = TlsParameters::builder(host);
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if CONFIG.smtp_accept_invalid_hostnames() {
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tls_parameters.dangerous_accept_invalid_hostnames(true);
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}
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if CONFIG.smtp_accept_invalid_certs() {
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tls_parameters.dangerous_accept_invalid_certs(true);
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}
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let tls_parameters = tls_parameters.build().unwrap();
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if CONFIG.smtp_explicit_tls() {
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smtp_client.tls(Tls::Wrapper(tls_parameters))
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} else {
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smtp_client.tls(Tls::Required(tls_parameters))
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}
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} else {
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smtp_client
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};
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let smtp_client = match (CONFIG.smtp_username(), CONFIG.smtp_password()) {
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(Some(user), Some(pass)) => smtp_client.credentials(Credentials::new(user, pass)),
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_ => smtp_client,
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@ -318,14 +328,17 @@ fn send_email(address: &str, subject: &str, body_html: &str, body_text: &str) ->
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// The boundary generated by Lettre it self is mostly too large based on the RFC822, so we generate one our selfs.
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use uuid::Uuid;
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let boundary = format!("_Part_{}_", Uuid::new_v4().to_simple());
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let unique_id = Uuid::new_v4().to_simple();
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let boundary = format!("_Part_{}_", unique_id);
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let alternative = MultiPart::alternative().boundary(boundary).singlepart(text).singlepart(html);
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let smtp_from = &CONFIG.smtp_from();
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let email = Message::builder()
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.message_id(Some(format!("<{}.{}>", unique_id, smtp_from)))
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.to(Mailbox::new(None, Address::from_str(&address)?))
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.from(Mailbox::new(
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Some(CONFIG.smtp_from_name()),
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Address::from_str(&CONFIG.smtp_from())?,
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Address::from_str(smtp_from)?,
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))
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.subject(subject)
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.multipart(alternative)?;
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|
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10
src/main.rs
10
src/main.rs
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@ -115,6 +115,16 @@ fn init_logging(level: log::LevelFilter) -> Result<(), fern::InitError> {
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.level_for("rocket::fairing", log::LevelFilter::Off)
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.chain(std::io::stdout());
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// Enable smtp debug logging only specifically for smtp when need.
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// This can contain sensitive information we do not want in the default debug/trace logging.
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if CONFIG.smtp_debug() {
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println!("[WARNING] SMTP Debugging is enabled (SMTP_DEBUG=true). Sensitive information could be disclosed via logs!");
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println!("[WARNING] Only enable SMTP_DEBUG during troubleshooting!\n");
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logger = logger.level_for("lettre::transport::smtp", log::LevelFilter::Debug)
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} else {
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logger = logger.level_for("lettre::transport::smtp", log::LevelFilter::Off)
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}
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if CONFIG.extended_logging() {
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logger = logger.format(|out, message, record| {
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out.finish(format_args!(
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|
|
|
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Loading…
Reference in New Issue