Add support for loading existing accounts from key

[djc]

Obsoletes #94, fixes #93.

cc @axos88

[djc]

This seems surprising. @cpu have you seen this before? I guess it might have something to do with running two environments in the same test?

---- account_from_private_key stdout ----
Error: Other(hyper_util::client::legacy::Error(Connect, Custom { kind: Other, error: Custom { kind: InvalidData, error: InvalidCertificate(UnknownIssuer) } })

[cpu]

This seems surprising. @cpu have you seen this before? I guess it might have something to do with running two environments in the same test?

The issue here is that you need to use Account::builder_with_http() and provide the Environment's preconfigured client. The Pebble ACME HTTPS interface uses its own PKI and the default HTTP client is expecting a server-chain from the web PKI.

This diff fixes it for me locally:

diff --git a/tests/pebble.rs b/tests/pebble.rs
index 91f66ec..3216b8f 100644
--- a/tests/pebble.rs
+++ b/tests/pebble.rs
@@ -381,7 +381,7 @@ async fn account_from_key() -> Result<(), Box<dyn StdError>> {
     let env = Environment::new(EnvironmentConfig::default()).await?;
     let server_url = format!("https://{}/dir", &env.config.pebble.listen_address);
 
-    let (account1, credentials) = Account::builder()?
+    let (account1, credentials) = Account::builder_with_http(Box::new(env.client.clone()))
         .create(
             &NewAccount {
                 contact: &[],
@@ -403,7 +403,7 @@ async fn account_from_key() -> Result<(), Box<dyn StdError>> {
     let key_der = BASE64_URL_SAFE_NO_PAD.decode(json_key.key_pkcs8)?;
     let key = Key::from_pkcs8_der(PrivatePkcs8KeyDer::from(key_der.clone()))?;
 
-    let (account2, credentials2) = Account::builder()?
+    let (account2, credentials2) = Account::builder_with_http(Box::new(env.client.clone()))
         .from_key((key, PrivateKeyDer::try_from(key_der.clone())?), server_url)
         .await?;
 
@@ -419,7 +419,7 @@ async fn account_from_key() -> Result<(), Box<dyn StdError>> {
     let server_url = format!("https://{}/dir", &env.config.pebble.listen_address);
 
     let key = Key::from_pkcs8_der(PrivatePkcs8KeyDer::from(key_der.clone()))?;
-    let result = Account::builder()?
+    let result = Account::builder_with_http(Box::new(env.client.clone()))
         .from_key((key, PrivateKeyDer::try_from(key_der)?), server_url)
         .await;