[pve-devel] [PATCH installer v3 1/8] common: convert `InstallRootPassword` into an enum

[Christoph Heiss]

It's more appropriate for that type of data, since only one of both
variants is ever allowed to be set. Makes it also a bit more ergonomic
to handle.

Signed-off-by: Christoph Heiss <c.heiss at proxmox.com>
---
Changes v2 -> v3:
  * added rustdoc for `InstallRootPassword`

Changes v1 -> v2:
  * new patch

 proxmox-auto-installer/src/utils.rs   | 15 +++++++++++----
 proxmox-installer-common/src/setup.rs | 12 +++++++-----
 proxmox-tui-installer/src/setup.rs    |  5 +----
 3 files changed, 19 insertions(+), 13 deletions(-)

diff --git a/proxmox-auto-installer/src/utils.rs b/proxmox-auto-installer/src/utils.rs
index fbf874e..3aae474 100644
--- a/proxmox-auto-installer/src/utils.rs
+++ b/proxmox-auto-installer/src/utils.rs
@@ -368,6 +368,16 @@ pub fn parse_answer(
     verify_email_and_root_password_settings(answer)?;
     verify_first_boot_settings(answer)?;
 
+    let root_password = match (
+        &answer.global.root_password,
+        &answer.global.root_password_hashed,
+    ) {
+        (Some(password), None) => InstallRootPassword::Plain(password.to_owned()),
+        (None, Some(hashed)) => InstallRootPassword::Hashed(hashed.to_owned()),
+        // Make the compiler happy, won't be reached anyway due to above checks
+        _ => bail!("invalid root password setting"),
+    };
+
     let mut config = InstallConfig {
         autoreboot: 1_usize,
         filesys: filesystem,
@@ -386,10 +396,7 @@ pub fn parse_answer(
         timezone: answer.global.timezone.clone(),
         keymap: answer.global.keyboard.to_string(),
 
-        root_password: InstallRootPassword {
-            plain: answer.global.root_password.clone(),
-            hashed: answer.global.root_password_hashed.clone(),
-        },
+        root_password,
         mailto: answer.global.mailto.clone(),
         root_ssh_keys: answer.global.root_ssh_keys.clone(),
 
diff --git a/proxmox-installer-common/src/setup.rs b/proxmox-installer-common/src/setup.rs
index 0ef47d2..26a8755 100644
--- a/proxmox-installer-common/src/setup.rs
+++ b/proxmox-installer-common/src/setup.rs
@@ -479,12 +479,14 @@ impl Interface {
     }
 }
 
+/// Root password which can either be in plain-text or hashed format.
+///
+/// The serialized format is suitable for passing to the low-level installer.
 #[derive(Clone, Deserialize, Serialize)]
-pub struct InstallRootPassword {
-    #[serde(skip_serializing_if = "Option::is_none")]
-    pub plain: Option<String>,
-    #[serde(skip_serializing_if = "Option::is_none")]
-    pub hashed: Option<String>,
+#[serde(rename_all = "lowercase")]
+pub enum InstallRootPassword {
+    Plain(String),
+    Hashed(String),
 }
 
 #[derive(Clone, Default, Deserialize, Serialize)]
diff --git a/proxmox-tui-installer/src/setup.rs b/proxmox-tui-installer/src/setup.rs
index b2a3511..b90c7dc 100644
--- a/proxmox-tui-installer/src/setup.rs
+++ b/proxmox-tui-installer/src/setup.rs
@@ -27,10 +27,7 @@ impl From<InstallerOptions> for InstallConfig {
             timezone: options.timezone.timezone,
             keymap: options.timezone.kb_layout,
 
-            root_password: InstallRootPassword {
-                plain: Some(options.password.root_password),
-                hashed: None,
-            },
+            root_password: InstallRootPassword::Plain(options.password.root_password),
             mailto: options.password.email,
             root_ssh_keys: vec![],
 
-- 
2.47.0