Support for setting client certificate and key from bytes (#2646)

* Support for setting client certificate and key from bytes

* Rename ssh_client_*_from_bytes to ssl_client_*_from_pem

* doc: clarify client_*_from_pem docs and add examples

* doc: apply missed suggestions from previous commit

* fix: run `cargo fmt`

---------

Co-authored-by: Austin Bonander <austin.bonander@gmail.com>
Co-authored-by: Austin Bonander <austin@launchbadge.com>

sqlx-mysql/src/options/mod.rs

@@ -215,6 +215,31 @@ impl MySqlConnectOptions {
         self
     }
 
+    /// Sets the SSL client certificate as a PEM-encoded byte slice.
+    ///
+    /// This should be an ASCII-encoded blob that starts with `-----BEGIN CERTIFICATE-----`.
+    ///
+    /// # Example
+    /// Note: embedding SSL certificates and keys in the binary is not advised.
+    /// This is for illustration purposes only.
+    ///
+    /// ```rust
+    /// # use sqlx_core::mysql::{MySqlSslMode, MySqlConnectOptions};
+    ///
+    /// const CERT: &[u8] = b"\
+    /// -----BEGIN CERTIFICATE-----
+    /// <Certificate data here.>
+    /// -----END CERTIFICATE-----";
+    ///
+    /// let options = MySqlConnectOptions::new()
+    ///     .ssl_mode(MySqlSslMode::VerifyCa)
+    ///     .ssl_client_cert_from_pem(CERT);
+    /// ```
+    pub fn ssl_client_cert_from_pem(mut self, cert: impl AsRef<[u8]>) -> Self {
+        self.ssl_client_cert = Some(CertificateInput::Inline(cert.as_ref().to_vec()));
+        self
+    }
+
     /// Sets the name of a file containing SSL client key.
     ///
     /// # Example
@@ -230,6 +255,31 @@ impl MySqlConnectOptions {
         self
     }
 
+    /// Sets the SSL client key as a PEM-encoded byte slice.
+    ///
+    /// This should be an ASCII-encoded blob that starts with `-----BEGIN PRIVATE KEY-----`.
+    ///
+    /// # Example
+    /// Note: embedding SSL certificates and keys in the binary is not advised.
+    /// This is for illustration purposes only.
+    ///
+    /// ```rust
+    /// # use sqlx_core::mysql::{MySqlSslMode, MySqlConnectOptions};
+    ///
+    /// const KEY: &[u8] = b"\
+    /// -----BEGIN PRIVATE KEY-----
+    /// <Private key data here.>
+    /// -----END PRIVATE KEY-----";
+    ///
+    /// let options = MySqlConnectOptions::new()
+    ///     .ssl_mode(MySqlSslMode::VerifyCa)
+    ///     .ssl_client_key_from_pem(KEY);
+    /// ```
+    pub fn ssl_client_key_from_pem(mut self, key: impl AsRef<[u8]>) -> Self {
+        self.ssl_client_key = Some(CertificateInput::Inline(key.as_ref().to_vec()));
+        self
+    }
+
     /// Sets the capacity of the connection's statement cache in a number of stored
     /// distinct statements. Caching is handled using LRU, meaning when the
     /// amount of queries hits the defined limit, the oldest statement will get

sqlx-postgres/src/options/mod.rs

@@ -344,6 +344,32 @@ impl PgConnectOptions {
         self
     }
 
+    /// Sets the SSL client certificate as a PEM-encoded byte slice.
+    ///
+    /// This should be an ASCII-encoded blob that starts with `-----BEGIN CERTIFICATE-----`.
+    ///
+    /// # Example
+    /// Note: embedding SSL certificates and keys in the binary is not advised.
+    /// This is for illustration purposes only.
+    ///
+    /// ```rust
+    /// # use sqlx_core::postgres::{PgSslMode, PgConnectOptions};
+    ///
+    /// const CERT: &[u8] = b"\
+    /// -----BEGIN CERTIFICATE-----
+    /// <Certificate data here.>
+    /// -----END CERTIFICATE-----";
+    ///    
+    /// let options = PgConnectOptions::new()
+    ///     // Providing a CA certificate with less than VerifyCa is pointless
+    ///     .ssl_mode(PgSslMode::VerifyCa)
+    ///     .ssl_client_cert_from_pem(CERT);
+    /// ```
+    pub fn ssl_client_cert_from_pem(mut self, cert: impl AsRef<[u8]>) -> Self {
+        self.ssl_client_cert = Some(CertificateInput::Inline(cert.as_ref().to_vec()));
+        self
+    }
+
     /// Sets the name of a file containing SSL client key.
     ///
     /// # Example
@@ -360,6 +386,32 @@ impl PgConnectOptions {
         self
     }
 
+    /// Sets the SSL client key as a PEM-encoded byte slice.
+    ///
+    /// This should be an ASCII-encoded blob that starts with `-----BEGIN PRIVATE KEY-----`.
+    ///
+    /// # Example
+    /// Note: embedding SSL certificates and keys in the binary is not advised.
+    /// This is for illustration purposes only.
+    ///
+    /// ```rust
+    /// # use sqlx_core::postgres::{PgSslMode, PgConnectOptions};
+    ///
+    /// const KEY: &[u8] = b"\
+    /// -----BEGIN PRIVATE KEY-----
+    /// <Private key data here.>
+    /// -----END PRIVATE KEY-----";
+    ///
+    /// let options = PgConnectOptions::new()
+    ///     // Providing a CA certificate with less than VerifyCa is pointless
+    ///     .ssl_mode(PgSslMode::VerifyCa)
+    ///     .ssl_client_key_from_pem(KEY);
+    /// ```
+    pub fn ssl_client_key_from_pem(mut self, key: impl AsRef<[u8]>) -> Self {
+        self.ssl_client_key = Some(CertificateInput::Inline(key.as_ref().to_vec()));
+        self
+    }
+
     /// Sets PEM encoded trusted SSL Certificate Authorities (CA).
     ///
     /// # Example