initial commit of a working API page

public/include/classes/user.class.php

@@ -225,6 +225,19 @@ class User {
     return false;
   }
 
+  /**
+   * Check API key for authentication
+   * @param key string API key hash
+   * @return bool
+   **/
+  public function checkApiKey($key) {
+    $this->debug->append("STA " . __METHOD__, 4);
+    $stmt = $this->mysqli->prepare("SELECT api_key FROM $this->table WHERE api_key = ?");
+    if ($this->checkStmt($stmt) && $stmt->bind_param("s", $key) && $stmt->execute() && $stmt->bind_result($api_key) && $stmt->fetch())
+      return $key === $api_key;
+    return false;
+  }
+
   private function checkUserPassword($username, $password) {
     $this->debug->append("STA " . __METHOD__, 4);
     $user = array();

public/include/pages/api.inc.php

@@ -0,0 +1,57 @@
+<?php
+
+// Make sure we are called from index.php
+if (!defined('SECURITY'))
+    die('Hacking attempt');
+
+if (!$user->checkApiKey($_REQUEST['api_key'])) {
+  header("HTTP/1.1 401 Unauthorized");
+  die();
+}
+
+// Fetch data from litecoind
+if ($bitcoin->can_connect() === true){
+  if (!$dDifficulty = $memcache->get('dDifficulty')) {
+    $dDifficulty = $bitcoin->query('getdifficulty');
+    $memcache->set('dDifficulty', $dDifficulty);
+  }
+  if (!$iBlock = $memcache->get('iBlock')) {
+    $iBlock = $bitcoin->query('getblockcount');
+    $memcache->set('iBlock', $iBlock);
+  }
+} else {
+  $iDifficulty = 1;
+  $iBlock = 0;
+  $_SESSION['POPUP'][] = array('CONTENT' => 'Unable to connect to pushpool service: ' . $bitcoin->can_connect(), 'TYPE' => 'errormsg');
+}
+
+// Grab the last 10 blocks found
+$iLimit = 10;
+$aBlocksFoundData = $statistics->getBlocksFound($iLimit);
+$aBlockData = $aBlocksFoundData[0];
+
+// Estimated time to find the next block
+$iCurrentPoolHashrate =  $statistics->getCurrentHashrate();
+// Time in seconds, not hours, using modifier in smarty to translate
+$iEstTime = $dDifficulty * pow(2,32) / ($iCurrentPoolHashrate * 1000);
+
+// Time since last block
+$now = new DateTime( "now" );
+if (!empty($aBlockData)) {
+  $dTimeSinceLast = ($now->getTimestamp() - $aBlockData['time']);
+} else {
+  $dTimeSinceLast = 0;
+}
+
+$aData = array(
+  'est_time' => $iEstTime,
+  'time_last' => $dTimeSinceLast,
+  'blocks_found' => $aBlocksFoundData,
+  'cur_block' => $iBlock,
+  'last_block' => $aBlockData['height'],
+  'difficulty' => $iDifficulty,
+);
+
+$supress_master = 1;
+echo json_encode($aData);
+?>