program: --sign-only (offline signing)

clap-utils/src/input_parsers.rs

@@ -1,7 +1,8 @@
 use {
     crate::keypair::{
         keypair_from_seed_phrase, pubkey_from_path, resolve_signer_from_path, signer_from_path,
-        ASK_KEYWORD, SKIP_SEED_PHRASE_VALIDATION_ARG,
+        signer_from_path_with_config, SignerFromPathConfig, ASK_KEYWORD,
+        SKIP_SEED_PHRASE_VALIDATION_ARG,
     },
     chrono::DateTime,
     clap::ArgMatches,
@@ -118,7 +119,7 @@ pub fn pubkeys_sigs_of(matches: &ArgMatches<'_>, name: &str) -> Option<Vec<(Pubk
     })
 }
 
-// Return a signer from matches at `name`
+// Return a signer from matches at `name` (returns error if signer is NullSigner).
 #[allow(clippy::type_complexity)]
 pub fn signer_of(
     matches: &ArgMatches<'_>,
@@ -134,6 +135,27 @@ pub fn signer_of(
     }
 }
 
+// Return a signer from matches at `name` (returns NullSigner and doesn't error).
+#[allow(clippy::type_complexity)]
+pub fn signer_of_allow_null_signer(
+    matches: &ArgMatches<'_>,
+    name: &str,
+    wallet_manager: &mut Option<Rc<RemoteWalletManager>>,
+) -> Result<(Option<Box<dyn Signer>>, Option<Pubkey>), Box<dyn std::error::Error>> {
+    if let Some(location) = matches.value_of(name) {
+        // Allow pubkey signers without accompanying signatures
+        let config = SignerFromPathConfig {
+            allow_null_signer: true,
+        };
+        let signer =
+            signer_from_path_with_config(matches, location, name, wallet_manager, &config)?;
+        let signer_pubkey = signer.pubkey();
+        Ok((Some(signer), Some(signer_pubkey)))
+    } else {
+        Ok((None, None))
+    }
+}
+
 pub fn pubkey_of_signer(
     matches: &ArgMatches<'_>,
     name: &str,

clap-utils/src/keypair.rs

@@ -66,6 +66,7 @@ impl SignOnly {
 }
 pub type CliSigners = Vec<Box<dyn Signer>>;
 pub type SignerIndex = usize;
+#[derive(Debug)]
 pub struct CliSignerInfo {
     pub signers: CliSigners,
 }

cli-output/src/cli_output.rs

@@ -2090,14 +2090,26 @@ impl fmt::Display for CliProgramId {
 #[serde(rename_all = "camelCase")]
 pub struct CliProgramBuffer {
     pub buffer: String,
+    pub program_data_max_len: usize,
+    pub min_rent_exempt_program_balance: u64,
 }
 
 impl QuietDisplay for CliProgramBuffer {}
 impl VerboseDisplay for CliProgramBuffer {}
 
 impl fmt::Display for CliProgramBuffer {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        writeln_name_value(f, "Buffer:", &self.buffer)
+        writeln_name_value(f, "Buffer:", &self.buffer)?;
+        writeln_name_value(
+            f,
+            "Program data max length:",
+            &format!("{:?}", self.program_data_max_len),
+        )?;
+        writeln_name_value(
+            f,
+            "Min rent-exempt program balance:",
+            &format!("{:?}", self.min_rent_exempt_program_balance),
+        )
     }
 }