From bf66d77a8d86faa4cbbc22147b24ebc9581ebb5d Mon Sep 17 00:00:00 2001
From: Gregory Sanders <gsanders87@gmail.com>
Date: Mon, 17 Dec 2018 11:37:44 -0500
Subject: [PATCH] Add Read/Write functions to txdb for PAK lists

---
 src/txdb.cpp | 11 +++++++++++
 src/txdb.h   |  2 ++
 2 files changed, 13 insertions(+)

diff --git a/src/txdb.cpp b/src/txdb.cpp
index 4a2a5502fe..da4a63a905 100644
--- a/src/txdb.cpp
+++ b/src/txdb.cpp
@@ -35,6 +35,7 @@ static const char DB_LAST_BLOCK = 'l';
 // ELEMENTS:
 static const char DB_PEGIN_FLAG = 'w';
 static const char DB_INVALID_BLOCK_Q = 'q';
+static const char DB_PAK = 'p';
 
 namespace {
 
@@ -279,6 +280,16 @@ bool CBlockTreeDB::WriteInvalidBlockQueue(const std::vector<uint256> &vBlocks) {
     return Write(std::make_pair(DB_INVALID_BLOCK_Q, uint256S("0")), vBlocks);
 }
 
+bool CBlockTreeDB::ReadPAKList(std::vector<std::vector<unsigned char> >& offline_list, std::vector<std::vector<unsigned char> >& online_list, bool& reject)
+{
+        return Read(std::make_pair(DB_PAK, uint256S("1")), offline_list) && Read(std::make_pair(DB_PAK, uint256S("2")), online_list) && Read(std::make_pair(DB_PAK, uint256S("3")), reject);
+}
+
+bool CBlockTreeDB::WritePAKList(const std::vector<std::vector<unsigned char> >& offline_list, const std::vector<std::vector<unsigned char> >& online_list, bool reject)
+{
+        return Write(std::make_pair(DB_PAK, uint256S("1")), offline_list) && Write(std::make_pair(DB_PAK, uint256S("2")), online_list) && Write(std::make_pair(DB_PAK, uint256S("3")), reject);
+}
+
 bool CBlockTreeDB::LoadBlockIndexGuts(const Consensus::Params& consensusParams, std::function<CBlockIndex*(const uint256&)> insertBlockIndex)
 {
     std::unique_ptr<CDBIterator> pcursor(NewIterator());
diff --git a/src/txdb.h b/src/txdb.h
index 52117dce2a..19eec51587 100644
--- a/src/txdb.h
+++ b/src/txdb.h
@@ -101,6 +101,8 @@ public:
     // ELEMENTS:
     bool ReadInvalidBlockQueue(std::vector<uint256> &vBlocks);
     bool WriteInvalidBlockQueue(const std::vector<uint256> &vBlocks);
+    bool ReadPAKList(std::vector<std::vector<unsigned char> >& offline_list, std::vector<std::vector<unsigned char> >& online_list, bool& reject);
+    bool WritePAKList(const std::vector<std::vector<unsigned char> >& offline_list, const std::vector<std::vector<unsigned char> >& online_list, bool reject);
 };
 
 #endif // BITCOIN_TXDB_H