Adding support for orphan blocks

* Adjusted blockupdate cronjob
 * Fetch block information via `gettransaction`
* Adjusted block class
 * Only getAllUnconfirmed where confirmations > -1
* Adjusted transaction class
 * added setOrphan method to mark orphaned transactions
* If block is orphaned
 * Mark all related transactions as Orphan_*type*
 * Set confirmations of block to -1 so it is ignored and marked as orphan
* Change transaction template, added listing for orphan transactions
* Add orphan status to block listings template

cronjobs/blockupdate.php

@@ -33,7 +33,18 @@ $aAllBlocks = $block->getAllUnconfirmed($config['confirmations']);
 verbose("ID\tBlockhash\tConfirmations\t\n");
 foreach ($aAllBlocks as $iIndex => $aBlock) {
   $aBlockInfo = $bitcoin->query('getblock', $aBlock['blockhash']);
+  // Fetch this blocks transaction details to find orphan blocks
+  $aTxDetails = $bitcoin->query('gettransaction', $aBlockInfo['merkleroot']);
   verbose($aBlock['id'] . "\t" . $aBlock['blockhash'] . "\t" . $aBlock['confirmations'] . " -> " . $aBlockInfo['confirmations'] . "\t");
+  if ($aTxDetails['details'][0]['category'] == 'orphan') {
+    // We have an orphaned block, we need to invalidate all transactions for this one
+    if ($transaction->setOrphan($aBlock['id']) && $block->setConfirmations($aBlock['id'], -1)) {
+      verbose("ORPHAN\n");
+    } else {
+      verbose("ORPHAN_ERR");
+    }
+    continue;
+  }
   if ($aBlock['confirmations'] == $aBlockInfo['confirmations']) {
     verbose("SKIPPED\n");
   } else if ($block->setConfirmations($aBlock['id'], $aBlockInfo['confirmations'])) {

public/include/classes/block.class.php

@@ -50,7 +50,7 @@ class Block {
   }
 
   public function getAllUnconfirmed($confirmations='120') {
-    $stmt = $this->mysqli->prepare("SELECT id, blockhash, confirmations FROM $this->table WHERE confirmations < ?");
+    $stmt = $this->mysqli->prepare("SELECT id, blockhash, confirmations FROM $this->table WHERE confirmations < ? AND confirmations > -1");
     if ($this->checkStmt($stmt)) {
       $stmt->bind_param("i", $confirmations);
       $stmt->execute();

public/include/classes/transaction.class.php

@@ -38,6 +38,41 @@ class Transaction {
     return false;
   }
 
+  public function setOrphan($block_id) {
+    $this->debug->append("STA " . __METHOD__, 4);
+    $stmt = $this->mysqli->prepare("
+      UPDATE $this->table
+      SET type = 'Orphan_Credit'
+      WHERE type = 'Credit'
+      AND block_id = ?
+      ");
+    if (!($this->checkStmt($stmt) && $stmt->bind_param('i', $block_id) && $stmt->execute())) {
+      $this->debug->append("Failed to set orphan credit transactions for $block_id");
+      return false;
+    }
+    $stmt = $this->mysqli->prepare("
+      UPDATE $this->table
+      SET type = 'Orphan_Fee'
+      WHERE type = 'Fee'
+      AND block_id = ?
+      ");
+    if (!($this->checkStmt($stmt) && $stmt->bind_param('i', $block_id) && $stmt->execute())) {
+      $this->debug->append("Failed to set orphan fee transactions for $block_id");
+      return false;
+    }
+    $stmt = $this->mysqli->prepare("
+      UPDATE $this->table
+      SET type = 'Orphan_Donation'
+      WHERE type = 'Donation'
+      AND block_id = ?
+      ");
+    if (!($this->checkStmt($stmt) && $stmt->bind_param('i', $block_id) && $stmt->execute())) {
+      $this->debug->append("Failed to set orphan donation transactions for $block_id");
+      return false;
+    }
+    return true;
+  }
+
   public function getTransactions($account_id, $start=0) {
     $this->debug->append("STA " . __METHOD__, 4);
     $stmt = $this->mysqli->prepare("

public/templates/mmcFE/account/transactions/default.tpl

@@ -1,4 +1,4 @@
-{include file="global/block_header.tpl" BLOCK_HEADER="Transaction Log" BUTTONS=array(Confirmed,Unconfirmed)}
+{include file="global/block_header.tpl" BLOCK_HEADER="Transaction Log" BUTTONS=array(Confirmed,Unconfirmed,Orphan)}
 <div class="block_content tab_content" id="Confirmed" style="clear:;">
   <center>
     <table cellpadding="1" cellspacing="1" width="98%" class="sortable">
@@ -84,4 +84,48 @@
     <p><font color="" sizeze="1">Listed are your estimated rewards and donations/fees for all blocks awaiting {$GLOBAL.confirmations} confirmations.</font></p>
   </center>
 </div>
+<div class="block_content tab_content" id="Orphan" style="">
+  <center>
+    <table cellpadding="1" cellspacing="1" width="98%" class="sortable">
+      <thead style="font-size:13px;">
+        <tr>
+          <th class="header" style="cursor: pointer;">TX #</th>
+          <th class="header" style="cursor: pointer;">Date</th>
+          <th class="header" style="cursor: pointer;">TX Type</th>
+          <th class="header" style="cursor: pointer;">Payment Address</th>
+          <th class="header" style="cursor: pointer;">Block #</th>
+          <th class="header" style="cursor: pointer;">Amount</th>
+        </tr>
+      </thead>
+      <tbody style="font-size:12px;">
+{section transaction $TRANSACTIONS}
+        {if (
+          $TRANSACTIONS[transaction].type == 'Orphan_Credit'
+          or $TRANSACTIONS[transaction].type == 'Orphan_Donation'
+          or $TRANSACTIONS[transaction].type == 'Orphan_Fee'
+        )}
+        <tr class="{cycle values="odd,even"}">
+          <td>{$TRANSACTIONS[transaction].id}</td>
+          <td>{$TRANSACTIONS[transaction].timestamp}</td>
+          <td>{$TRANSACTIONS[transaction].type}</td>
+          <td>{$TRANSACTIONS[transaction].coin_address}</td>
+          <td>{if $TRANSACTIONS[transaction].height == 0}n/a{else}{$TRANSACTIONS[transaction].height}{/if}</td>
+          <td><font color="{if $TRANSACTIONS[transaction].type == Orphan_Credit}green{else}red{/if}">{$TRANSACTIONS[transaction].amount}</td>
+        </tr>
+          {if $TRANSACTIONS[transaction].type == Orphan_Credit}
+            {assign var="orphan_credits" value="`$orphan_credits+$TRANSACTIONS[transaction].amount`"}
+          {else}
+            {assign var="orphan_debits" value="`$orphan_debits+$TRANSACTIONS[transaction].amount`"}
+          {/if}
+        {/if}
+{/section}
+        <tr>
+          <td colspan="5"><b>Orphaned Totals:</b></td>
+          <td><b>{$orphan_credits - $orphan_debits}</b></td>
+        </tr>
+      </tbody>
+    </table>
+    <p><font color="" sizeze="1">Listed are your orphaned transactions for blocks not part of the main blockchain.</font></p>
+  </center>
+</div>
 {include file="global/block_footer.tpl"}

public/templates/mmcFE/statistics/blocks/blocks_found.tpl

@@ -16,7 +16,12 @@
 {section block $BLOCKSFOUND}
       <tr class="{cycle values="odd,even"}">
         <td><a href="{$GLOBAL.blockexplorer}{$BLOCKSFOUND[block].height}" target="_blank">{$BLOCKSFOUND[block].height}</a></td>
-        <td>{if $BLOCKSFOUND[block].confirmations >= $GLOBAL.confirmations}<font color="green">Confirmed</font>{else}{$GLOBAL.confirmations - $BLOCKSFOUND[block].confirmations} left{/if}</td>
+        <td>
+        {if $BLOCKSFOUND[block].confirmations >= $GLOBAL.confirmations}
+          <font color="green">Confirmed</font>
+        {else if $BLOCKSFOUND[block].confirmations == -1}
+          <font color="red">Orphan</font>
+        {else}{$GLOBAL.confirmations - $BLOCKSFOUND[block].confirmations} left{/if}</td>
         <td>{$BLOCKSFOUND[block].finder|default:"unknown"}</td>
         <td>{$BLOCKSFOUND[block].time|date_format:"%d/%m/%Y %H:%M:%S"}</td>
         <td class="right">{$BLOCKSFOUND[block].difficulty|number_format:"8"}</td>