Show BIP65 soft-fork progress in getblockchaininfo

Signed-off-by: observerdev <dev@obsr.org>

src/rpc/blockchain.cpp

@@ -579,6 +579,34 @@ UniValue verifychain(const UniValue& params, bool fHelp)
     return fVerified;
 }
 
+/** Implementation of IsSuperMajority with better feedback */
+static UniValue SoftForkMajorityDesc(int minVersion, CBlockIndex* pindex, int nRequired)
+{
+    int nFound = 0;
+    CBlockIndex* pstart = pindex;
+    for (int i = 0; i < Params().ToCheckBlockUpgradeMajority() && pstart != NULL; i++)
+    {
+        if (pstart->nVersion >= minVersion)
+            ++nFound;
+        pstart = pstart->pprev;
+    }
+    UniValue rv(UniValue::VOBJ);
+    rv.push_back(Pair("status", nFound >= nRequired));
+    rv.push_back(Pair("found", nFound));
+    rv.push_back(Pair("required", nRequired));
+    rv.push_back(Pair("window", Params().ToCheckBlockUpgradeMajority()));
+    return rv;
+}
+static UniValue SoftForkDesc(const std::string &name, int version, CBlockIndex* pindex)
+{
+    UniValue rv(UniValue::VOBJ);
+    rv.push_back(Pair("id", name));
+    rv.push_back(Pair("version", version));
+    rv.push_back(Pair("enforce", SoftForkMajorityDesc(version, pindex, Params().EnforceBlockUpgradeMajority())));
+    rv.push_back(Pair("reject", SoftForkMajorityDesc(version, pindex, Params().RejectBlockOutdatedMajority())));
+    return rv;
+}
+
 UniValue getblockchaininfo(const UniValue& params, bool fHelp)
 {
     if (fHelp || params.size() != 0)
@@ -595,6 +623,19 @@ UniValue getblockchaininfo(const UniValue& params, bool fHelp)
             "  \"difficulty\": xxxxxx,     (numeric) the current difficulty\n"
             "  \"verificationprogress\": xxxx, (numeric) estimate of verification progress [0..1]\n"
             "  \"chainwork\": \"xxxx\"     (string) total amount of work in active chain, in hexadecimal\n"
+            "  \"softforks\": [            (array) status of softforks in progress\n"
+            "     {\n"
+            "        \"id\": \"xxxx\",        (string) name of softfork\n"
+            "        \"version\": xx,         (numeric) block version\n"
+            "        \"enforce\": {           (object) progress toward enforcing the softfork rules for new-version blocks\n"
+            "           \"status\": xx,       (boolean) true if threshold reached\n"
+            "           \"found\": xx,        (numeric) number of blocks with the new version found\n"
+            "           \"required\": xx,     (numeric) number of blocks required to trigger\n"
+            "           \"window\": xx,       (numeric) maximum size of examined window of recent blocks\n"
+            "        },\n"
+            "        \"reject\": { ... }      (object) progress toward rejecting pre-softfork blocks (same fields as \"enforce\")\n"
+            "     }, ...\n"
+            "  ]\n"
             "}\n"
 
             "\nExamples:\n" +
@@ -610,6 +651,10 @@ UniValue getblockchaininfo(const UniValue& params, bool fHelp)
     obj.push_back(Pair("difficulty", (double)GetDifficulty()));
     obj.push_back(Pair("verificationprogress", Checkpoints::GuessVerificationProgress(chainActive.Tip())));
     obj.push_back(Pair("chainwork", chainActive.Tip()->nChainWork.GetHex()));
+    CBlockIndex* tip = chainActive.Tip();
+    UniValue softforks(UniValue::VARR);
+    softforks.push_back(SoftForkDesc("bip65", 5, tip));
+    obj.push_back(Pair("softforks",             softforks));
     return obj;
 }