From 39df8497e33ede0d69e0338c315c6ce36f248c8f Mon Sep 17 00:00:00 2001
From: moneroexamples <moneroexamples@tuta.io>
Date: Fri, 5 May 2017 07:32:02 +0800
Subject: [PATCH] mixins public keys added to api/transactions

---
 README.md  | 29 ++++++++++++++++++++++++-----
 src/page.h | 39 ++++++++++++++++++++++++++++++++++++---
 2 files changed, 60 insertions(+), 8 deletions(-)

diff --git a/README.md b/README.md
index cc2936c..67467d5 100644
--- a/README.md
+++ b/README.md
@@ -226,19 +226,33 @@ The explorer has JSON api. For the API, it uses conventions defined by [JSend](h
 curl  -w "\n" -X GET "http://139.162.32.245:8081/api/transaction/6093260dbe79fd6277694d14789dc8718f1bd54457df8bab338c2efa3bb0f03d"
 ```
 
+Partial results shown:
+
 ```json
 {
   "data": {
     "block_height": 1268252,
-    "coinbase": 0,
+    "coinbase": false,
     "confirmations": 1,
-    "fee": 12517785574,
+    "current_height": 1268253,
+    "extra": "01be23e277aed6b5f41f66b05244bf994c13108347366ec678ae16657f0fc3a22b",
     "inputs": [
       {
         "amount": 0,
-        "key_image": "67838fd0ffd79f13e735830d3ec60412aed59e53e1f997feb6f73d088b949611"
+        "key_image": "67838fd0ffd79f13e735830d3ec60412aed59e53e1f997feb6f73d088b949611",
+        "mixins": [
+          {
+            "block_no": 1238623,
+            "public_key": "0a5b853c55303c10e1326acfb085b9e246e088b1ccac7e37f7a810d46a28a914"
+          },
+          {
+            "block_no": 1246942,
+            "public_key": "527cf86f5abbfb006c970f7c6eb40493786d4751306f8985c6a43f98a88c0dff"
+          }
+        ]
       }
     ],
+    "mixin": 9,
     "outputs": [
       {
         "amount": 0,
@@ -249,12 +263,17 @@ curl  -w "\n" -X GET "http://139.162.32.245:8081/api/transaction/6093260dbe79fd6
         "public_key": "e25f00fceb77af841d780b68647618812695b4ca6ebe338faba6e077f758ac30"
       }
     ],
+    "payment_id": "",
+    "payment_id8": "",
     "rct_type": 1,
-    "size": 13323000000000000,
     "timestamp": 1489753456,
     "timestamp_utc": "2017-03-17 12:24:16",
+    "tx_fee": 12517785574,
     "tx_hash": "6093260dbe79fd6277694d14789dc8718f1bd54457df8bab338c2efa3bb0f03d",
-    "version": 2
+    "tx_size": 13323,
+    "tx_version": 2,
+    "xmr_inputs": 0,
+    "xmr_outputs": 0
   },
   "status": "success"
 }
diff --git a/src/page.h b/src/page.h
index 491b2c0..0682394 100644
--- a/src/page.h
+++ b/src/page.h
@@ -3962,12 +3962,45 @@ namespace xmreg
 
             json inputs;
 
-            for (const auto& input: txd.input_key_imgs)
+            for (const txin_to_key &in_key: txd.input_key_imgs)
             {
+
+                // get absolute offsets of mixins
+                std::vector<uint64_t> absolute_offsets
+                        = cryptonote::relative_output_offsets_to_absolute(
+                                in_key.key_offsets);
+
+                // get public keys of outputs used in the mixins that match to the offests
+                std::vector<output_data_t> outputs;
+
+                try
+                {
+                    core_storage->get_db().get_output_key(in_key.amount,
+                                                          absolute_offsets,
+                                                          outputs);
+                }
+                catch (const OUTPUT_DNE &e)
+                {
+                    j_response["status"]  = "error";
+                    j_response["message"] = "Failed to retrive outputs (mixins) used in key images";
+                    return j_response;
+                }
+
                 inputs.push_back(json {
-                        {"key_image"  , pod_to_hex(input.k_image)},
-                        {"amount"     , input.amount}
+                        {"key_image"  , pod_to_hex(in_key.k_image)},
+                        {"amount"     , in_key.amount},
+                        {"mixins"     , json {}}
                 });
+
+                json& mixins = inputs.back()["mixins"];
+
+                for (const output_data_t& output_data: outputs)
+                {
+                    mixins.push_back(json {
+                            {"public_key"  , pod_to_hex(output_data.pubkey)},
+                            {"block_no"    , output_data.height},
+                    });
+                }
             }
 
             if (found_in_mempool == false)