From d95961b47030a7d75ebccb3738bbb0d7303958a5 Mon Sep 17 00:00:00 2001
From: Sebastian Grewe <sebastian@grewe.ca>
Date: Sat, 16 Nov 2013 20:39:41 +0100
Subject: [PATCH] [FIX] Coins without nethashrate in getmininginfo

Fixes issues with coins that did not implement a proper array index into
their `getmininginfo` output. Currently supported keys are

* networkhashps
* hashespersec
* netmhashps

If none of there are found or `getmininginfo` fails itself, we now
default to `0` to ensure the webfrontend still works.

Fixes #847 and also fixes #834 which has not reported back the
required information.
---
 .../include/classes/bitcoinwrapper.class.php  | 20 ++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/public/include/classes/bitcoinwrapper.class.php b/public/include/classes/bitcoinwrapper.class.php
index 6881babc..2ce5056b 100644
--- a/public/include/classes/bitcoinwrapper.class.php
+++ b/public/include/classes/bitcoinwrapper.class.php
@@ -48,15 +48,21 @@ class BitcoinWrapper extends BitcoinClient {
     if ($data = $this->memcache->get(__FUNCTION__)) return $data;
     try {
       $dNetworkHashrate = $this->query('getmininginfo');
-      if (is_array($dNetworkHashrate) && array_key_exists('networkhashps', $dNetworkHashrate)) {
-        $dNetworkHashrate = $dNetworkHashrate['networkhashps'];
-      } else if (is_array($dNetworkHashrate) && array_key_exists('hashespersec', $dNetworkHashrate)) {
-        $dNetworkHashrate = $dNetworkHashrate['hashespersec'];
-      } else if (is_array($dNetworkHashrate) && array_key_exists('netmhashps', $dNetworkHashrate)) {
-        $dNetworkHashrate = $dNetworkHashrate['netmhashps'] * 1000 * 1000;
+      if (is_array($dNetworkHashrate)) {
+        if (array_key_exists('networkhashps', $dNetworkHashrate)) {
+          $dNetworkHashrate = $dNetworkHashrate['networkhashps'];
+        } else if (array_key_exists('hashespersec', $dNetworkHashrate)) {
+          $dNetworkHashrate = $dNetworkHashrate['hashespersec'];
+        } else if (array_key_exists('netmhashps', $dNetworkHashrate)) {
+          $dNetworkHashrate = $dNetworkHashrate['netmhashps'] * 1000 * 1000;
+        } else {
+          // Unsupported implementation
+          $dNetworkHashrate = 0;
+        }
       }
     } catch (Exception $e) {
-      return false;
+      // getmininginfo does not exist, cache for an hour
+      return $this->memcache->setCache(__FUNCTION__, 0, 3600);
     }
     return $this->memcache->setCache(__FUNCTION__, $dNetworkHashrate, 30);
   }