From 446e78b95a2d2b74afb9ab7c39bf135ee5e8ab32 Mon Sep 17 00:00:00 2001
From: Robin Krahl <robin.krahl@ireas.org>
Date: Thu, 27 Aug 2020 13:13:54 +0200
Subject: Add otp-cache extension

---
 extensions/otp-cache/src/ext.rs | 110 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 extensions/otp-cache/src/ext.rs

(limited to 'extensions/otp-cache/src/ext.rs')

diff --git a/extensions/otp-cache/src/ext.rs b/extensions/otp-cache/src/ext.rs
new file mode 100644
index 0000000..ccebd39
--- /dev/null
+++ b/extensions/otp-cache/src/ext.rs
@@ -0,0 +1,110 @@
+use std::ffi;
+use std::fmt;
+use std::process;
+use std::str;
+
+#[derive(Debug, structopt::StructOpt)]
+pub struct Args {
+  #[structopt(long, hidden(true))]
+  pub nitrocli: String,
+
+  #[structopt(long, hidden(true))]
+  pub verbosity: Option<String>,
+}
+
+#[derive(Debug)]
+pub struct Nitrocli {
+  cmd: process::Command,
+}
+
+#[derive(Clone, Copy, Debug, Eq, Ord, PartialEq, PartialOrd)]
+pub enum OtpAlgorithm {
+  Hotp,
+  Totp,
+}
+
+impl Args {
+  pub fn nitrocli(&self) -> Nitrocli {
+    // TODO: set verbosity args
+    Nitrocli::new(&self.nitrocli)
+  }
+}
+
+impl Nitrocli {
+  pub fn new(nitrocli: &str) -> Nitrocli {
+    Nitrocli {
+      cmd: process::Command::new(nitrocli),
+    }
+  }
+
+  pub fn arg(&mut self, arg: impl AsRef<ffi::OsStr>) -> &mut Nitrocli {
+    self.cmd.arg(arg);
+    self
+  }
+
+  pub fn args<I, S>(&mut self, args: I) -> &mut Nitrocli
+  where
+    I: IntoIterator<Item = S>,
+    S: AsRef<ffi::OsStr>,
+  {
+    self.cmd.args(args);
+    self
+  }
+
+  pub fn text(&mut self) -> anyhow::Result<String> {
+    let output = self.cmd.output()?;
+    if output.status.success() {
+      String::from_utf8(output.stdout).map_err(From::from)
+    } else {
+      Err(anyhow::anyhow!(
+        "nitrocli call failed: {}",
+        String::from_utf8_lossy(&output.stderr)
+      ))
+    }
+  }
+}
+
+impl fmt::Display for OtpAlgorithm {
+  fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+    write!(
+      f,
+      "{}",
+      match self {
+        OtpAlgorithm::Hotp => "hotp",
+        OtpAlgorithm::Totp => "totp",
+      }
+    )
+  }
+}
+
+impl str::FromStr for OtpAlgorithm {
+  type Err = anyhow::Error;
+
+  fn from_str(s: &str) -> Result<OtpAlgorithm, Self::Err> {
+    match s {
+      "hotp" => Ok(OtpAlgorithm::Hotp),
+      "totp" => Ok(OtpAlgorithm::Totp),
+      _ => Err(anyhow::anyhow!("Unexpected OTP algorithm: {}", s)),
+    }
+  }
+}
+
+impl<'de> serde::Deserialize<'de> for OtpAlgorithm {
+  fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+  where
+    D: serde::Deserializer<'de>,
+  {
+    use serde::de::Error as _;
+
+    str::FromStr::from_str(&String::deserialize(deserializer)?).map_err(D::Error::custom)
+  }
+}
+
+impl serde::Serialize for OtpAlgorithm {
+  fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+  where
+    S: serde::Serializer,
+  {
+    self.to_string().serialize(serializer)
+  }
+}
-- 
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