From 43efc3e79a7cbfd28466ea67ce9a0621f0c2f722 Mon Sep 17 00:00:00 2001
From: Steven Roose <steven@stevenroose.org>
Date: Thu, 28 Mar 2019 16:23:12 +0000
Subject: [PATCH] Fix getrawtransaction for coinbase transactions

---
 client/src/client.rs |  2 +-
 json/src/lib.rs      | 37 +++++++++++++++++++++++++++++--------
 2 files changed, 30 insertions(+), 9 deletions(-)

diff --git a/client/src/client.rs b/client/src/client.rs
index 5e9a4674..ff537eb3 100644
--- a/client/src/client.rs
+++ b/client/src/client.rs
@@ -259,7 +259,7 @@ pub trait RpcApi: Sized {
         include_watchonly: Option<bool>,
     ) -> Result<json::GetTransactionResult> {
         let mut args = [into_json(txid)?, opt_into_json(include_watchonly)?];
-        self.call("getrawtransaction", handle_defaults(&mut args, &[null()]))
+        self.call("gettransaction", handle_defaults(&mut args, &[null()]))
     }
 
     fn get_tx_out(
diff --git a/json/src/lib.rs b/json/src/lib.rs
index b3f78669..26d50554 100644
--- a/json/src/lib.rs
+++ b/json/src/lib.rs
@@ -166,14 +166,29 @@ impl GetRawTransactionResultVinScriptSig {
 #[derive(Clone, PartialEq, Eq, Debug, Deserialize, Serialize)]
 #[serde(rename_all = "camelCase")]
 pub struct GetRawTransactionResultVin {
-    pub txid: sha256d::Hash,
-    pub vout: u32,
-    pub script_sig: GetRawTransactionResultVinScriptSig,
     pub sequence: u32,
+    /// The raw scriptSig in case of a coinbase tx.
+    pub coinbase: Option<String>,
+    /// Not provided for coinbase txs.
+    pub txid: Option<sha256d::Hash>,
+    /// Not provided for coinbase txs.
+    pub vout: Option<u32>,
+    /// The scriptSig in case of a non-coinbase tx.
+    pub script_sig: Option<GetRawTransactionResultVinScriptSig>,
+    /// Not provided for coinbase txs.
     #[serde(default, deserialize_with = "deserialize_hex_array_opt")]
     pub txinwitness: Option<Vec<Vec<u8>>>,
 }
 
+impl GetRawTransactionResultVin {
+    /// Whether this input is from a coinbase tx.
+    /// The [txid], [vout] and [script_sig] fields are not provided
+    /// for coinbase transactions.
+    pub fn is_coinbase(&self) -> bool {
+        self.coinbase.is_some()
+    }
+}
+
 #[derive(Clone, PartialEq, Eq, Debug, Deserialize, Serialize)]
 #[serde(rename_all = "camelCase")]
 pub struct GetRawTransactionResultVoutScriptPubKey {
@@ -223,6 +238,11 @@ pub struct GetRawTransactionResult {
 }
 
 impl GetRawTransactionResult {
+    /// Whether this tx is a coinbase tx.
+    pub fn is_coinbase(&self) -> bool {
+        self.vin.len() == 1 && self.vin[0].is_coinbase()
+    }
+
     pub fn transaction(&self) -> Result<Transaction, encode::Error> {
         Ok(encode::deserialize(&self.hex)?)
     }
@@ -869,12 +889,13 @@ mod tests {
 			version: 2,
 			locktime: 1384957,
 			vin: vec![GetRawTransactionResultVin{
-				txid: hash!("f04a336cb0fac5611e625827bd89e0be5dd2504e6a98ecbfaa5fcf1528d06b58"),
-				vout: 0,
-				script_sig: GetRawTransactionResultVinScriptSig{
+				txid: Some(hash!("f04a336cb0fac5611e625827bd89e0be5dd2504e6a98ecbfaa5fcf1528d06b58")),
+				vout: Some(0),
+				coinbase: None,
+				script_sig: Some(GetRawTransactionResultVinScriptSig{
 					asm: "3045022100e85425f6d7c589972ee061413bcf08dc8c8e589ce37b217535a42af924f0e4d602205c9ba9cb14ef15513c9d946fa1c4b797883e748e8c32171bdf6166583946e35c[ALL] 03dae30a4d7870cd87b45dd53e6012f71318fdd059c1c2623b8cc73f8af287bb2d".into(),
 					hex: hex!("483045022100e85425f6d7c589972ee061413bcf08dc8c8e589ce37b217535a42af924f0e4d602205c9ba9cb14ef15513c9d946fa1c4b797883e748e8c32171bdf6166583946e35c012103dae30a4d7870cd87b45dd53e6012f71318fdd059c1c2623b8cc73f8af287bb2d"),
-				},
+				}),
 				sequence: 4294967294,
 				txinwitness: None,
 
@@ -966,7 +987,7 @@ mod tests {
             expected.transaction().unwrap().input[0].previous_output.txid,
             hash!("f04a336cb0fac5611e625827bd89e0be5dd2504e6a98ecbfaa5fcf1528d06b58")
         );
-        assert!(expected.vin[0].script_sig.script().is_ok());
+        assert!(expected.vin[0].script_sig.as_ref().unwrap().script().is_ok());
         assert!(expected.vout[0].script_pub_key.script().is_ok());
     }