From 223c8484f727451d15ad23ffb0133a1858b56b5c Mon Sep 17 00:00:00 2001
From: Daniel Mueller <deso@posteo.net>
Date: Tue, 25 Aug 2020 19:04:50 -0700
Subject: Introduce support for user-provided extensions

This change introduces support for discovering and executing
user-provided extensions to the program. Extensions are useful for
allowing users to provide additional functionality on top of the
nitrocli proper. Implementation wise we stick to an approach similar to
git or cargo subcommands in nature: we search the directories listed in
the PATH environment variable for a file that starts with "nitrocli-",
followed by the extension name. This file is then executed. It is
assumed that the extension recognizes (or at least not prohibits) the
following arguments: --nitrocli (providing the path to the nitrocli
binary), --model (with the model passed to the main program), and
--verbosity (the verbosity level).
---
 src/tests/mod.rs | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'src/tests/mod.rs')

diff --git a/src/tests/mod.rs b/src/tests/mod.rs
index e86f42f..e0ee876 100644
--- a/src/tests/mod.rs
+++ b/src/tests/mod.rs
@@ -24,6 +24,7 @@ use nitrokey_test::test as test_device;
 
 mod config;
 mod encrypted;
+mod extensions;
 mod hidden;
 mod list;
 mod lock;
@@ -93,6 +94,15 @@ impl Builder {
     self
   }
 
+  /// Set the `PATH` used for looking up extensions.
+  fn path<P>(mut self, path: P) -> Self
+  where
+    P: Into<ffi::OsString>,
+  {
+    self.0.path = Some(path.into());
+    self
+  }
+
   /// Set the password to use for certain operations.
   fn password<P>(mut self, password: P) -> Self
   where
@@ -110,6 +120,7 @@ impl Builder {
 
 struct Nitrocli {
   model: Option<nitrokey::Model>,
+  path: Option<ffi::OsString>,
   admin_pin: Option<ffi::OsString>,
   user_pin: Option<ffi::OsString>,
   new_admin_pin: Option<ffi::OsString>,
@@ -121,6 +132,7 @@ impl Nitrocli {
   pub fn new() -> Self {
     Self {
       model: None,
+      path: None,
       admin_pin: Some(nitrokey::DEFAULT_ADMIN_PIN.into()),
       user_pin: Some(nitrokey::DEFAULT_USER_PIN.into()),
       new_admin_pin: None,
@@ -174,6 +186,7 @@ impl Nitrocli {
     let ctx = &mut crate::RunCtx {
       stdout: &mut stdout,
       stderr: &mut stderr,
+      path: self.path.clone(),
       admin_pin: self.admin_pin.clone(),
       user_pin: self.user_pin.clone(),
       new_admin_pin: self.new_admin_pin.clone(),
-- 
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