feat: add openpgp card list

src/pgpcardlist.rs

@@ -0,0 +1,40 @@
+use clap::{ArgMatches, SubCommand, App, Arg};
+use crate::cmd::{Command, CommandError};
+use openpgp_card::OpenPGPCard;
+
+pub struct CommandImpl;
+
+impl Command for CommandImpl {
+    fn name(&self) -> &str { "pgp-card-list" }
+
+    fn subcommand<'a>(&self) -> App<'a, 'a> {
+        SubCommand::with_name(self.name()).about("OpenPGP Card List subcommand")
+            // .arg(Arg::with_name("app-id").long("app-id").default_value("https://example.com").help("App id"))
+            // .arg(Arg::with_name("timeout").long("timeout").default_value("10").help("Timeout in seconds"))
+            .arg(Arg::with_name("json").long("json").help("JSON output"))
+    }
+
+    fn run(&self, _arg_matches: &ArgMatches, _sub_arg_matches: &ArgMatches) -> CommandError {
+        match OpenPGPCard::list_cards() {
+            Err(e) => return simple_error!("Failed to list OpenPGP cards: {}", e),
+            Ok(list) => {
+                information!("Found {} card(s)", list.len());
+                for (i, card) in list.iter().enumerate() {
+                    success!("Found card {}: {:?}", i, card.get_aid());
+                    if let Ok(fingerprints) = card.get_fingerprints() {
+                        if let Some(a) = fingerprints.authentication() {
+                            information!("Authentication fingerprint: {}", a);
+                        }
+                        if let Some(d) = fingerprints.decryption() {
+                            information!("Authentication fingerprint: {}", d);
+                        }
+                        if let Some(s) = fingerprints.signature() {
+                            information!("Authentication fingerprint: {}", s);
+                        }
+                    }
+                }
+            }
+        }
+        Ok(())
+    }
+}