From c45c7ea0fa38fda453c596bd3161c9362d689381 Mon Sep 17 00:00:00 2001
From: Jonas Schnelli <jonas.schnelli@include7.ch>
Date: Tue, 16 Dec 2014 10:50:44 +0100
Subject: [REST] add JSON support for /rest/headers/

---
 src/rest.cpp | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

(limited to 'src/rest.cpp')

diff --git a/src/rest.cpp b/src/rest.cpp
index a1bd893bec..dfe01495f7 100644
--- a/src/rest.cpp
+++ b/src/rest.cpp
@@ -65,6 +65,7 @@ public:
 extern void TxToJSON(const CTransaction& tx, const uint256 hashBlock, UniValue& entry);
 extern UniValue blockToJSON(const CBlock& block, const CBlockIndex* blockindex, bool txDetails = false);
 extern void ScriptPubKeyToJSON(const CScript& scriptPubKey, UniValue& out, bool fIncludeHex);
+extern UniValue blockheaderToJSON(const CBlockIndex* blockindex);
 
 static RestErr RESTERR(enum HTTPStatusCode status, string message)
 {
@@ -134,14 +135,14 @@ static bool rest_headers(AcceptedConnection* conn,
     if (!ParseHashStr(hashStr, hash))
         throw RESTERR(HTTP_BAD_REQUEST, "Invalid hash: " + hashStr);
 
-    std::vector<CBlockHeader> headers;
+    std::vector<const CBlockIndex *> headers;
     headers.reserve(count);
     {
         LOCK(cs_main);
         BlockMap::const_iterator it = mapBlockIndex.find(hash);
         const CBlockIndex *pindex = (it != mapBlockIndex.end()) ? it->second : NULL;
         while (pindex != NULL && chainActive.Contains(pindex)) {
-            headers.push_back(pindex->GetBlockHeader());
+            headers.push_back(pindex);
             if (headers.size() == (unsigned long)count)
                 break;
             pindex = chainActive.Next(pindex);
@@ -149,8 +150,8 @@ static bool rest_headers(AcceptedConnection* conn,
     }
 
     CDataStream ssHeader(SER_NETWORK, PROTOCOL_VERSION);
-    BOOST_FOREACH(const CBlockHeader &header, headers) {
-        ssHeader << header;
+    BOOST_FOREACH(const CBlockIndex *pindex, headers) {
+        ssHeader << pindex->GetBlockHeader();
     }
 
     switch (rf) {
@@ -166,6 +167,16 @@ static bool rest_headers(AcceptedConnection* conn,
         return true;
     }
 
+    case RF_JSON: {
+        UniValue jsonHeaders(UniValue::VARR);
+        BOOST_FOREACH(const CBlockIndex *pindex, headers) {
+            jsonHeaders.push_back(blockheaderToJSON(pindex));
+        }
+        string strJSON = jsonHeaders.write() + "\n";
+        conn->stream() << HTTPReply(HTTP_OK, strJSON, fRun) << std::flush;
+        return true;
+    }
+
     default: {
         throw RESTERR(HTTP_NOT_FOUND, "output format not found (available: .bin, .hex)");
     }
-- 
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