Add in-app purchases

buyitem.php

@@ -0,0 +1,27 @@
+<?php
+
+require 'required.php';
+require 'onlyloggedin.php';
+
+if (!$database->has('shopitems', ['merchid' => $VARS['merchid']])) {
+    sendError("That item is not available at this time.", true);
+}
+
+$shopitem = $database->select('shopitems', ['merchid', 'itemid', 'quantity', 'cost'], ['merchid' => $VARS['merchid']])[0];
+
+if (!is_empty($VARS['cost']) && !($shopitem['cost'] == $VARS['cost'])) {
+    sendError("That item is no longer available at that price.", true);
+}
+
+$credits = $database->select('players', ['credits'], ['uuid' => $_SESSION['uuid']])[0]['credits'];
+if ($credits < $shopitem['cost']) {
+    sendError("You don't have enough money!", true);
+}
+
+for ($i = 0; $i < $shopitem['quantity']; $i++) {
+    $database->insert('inventory', ['playeruuid' => $_SESSION['uuid'], 'itemid' => $shopitem['itemid']]);
+}
+
+$database->update('players', ['credits' => ($credits - $shopitem['cost'])], ['uuid' => $_SESSION['uuid']]);
+
+sendOK("Thanks for your purchase!");

processiap.php

@@ -0,0 +1,88 @@
+<?php
+
+require 'required.php';
+require 'onlyloggedin.php';
+
+function verify_market_in_app($signed_data, $signature, $public_key_base64) {
+    $key = "-----BEGIN PUBLIC KEY-----\n" .
+            chunk_split($public_key_base64, 64, "\n") .
+            '-----END PUBLIC KEY-----';
+    //using PHP to create an RSA key
+    $key = openssl_get_publickey($key);
+    //$signature should be in binary format, but it comes as BASE64. 
+    //So, I'll convert it.
+    $signature = base64_decode($signature);
+    //using PHP's native support to verify the signature
+    $result = openssl_verify(
+            $signed_data, $signature, $key, OPENSSL_ALGO_SHA1);
+    if (0 === $result) {
+        return false;
+    } else if (1 !== $result) {
+        return false;
+    } else {
+        return true;
+    }
+}
+
+function verify_app_store_in_app($receipt, $is_sandbox) {
+    //$sandbox should be TRUE if you want to test against itunes sandbox servers
+    if ($is_sandbox) {
+        $verify_host = "ssl://sandbox.itunes.apple.com";
+    } else {
+        $verify_host = "ssl://buy.itunes.apple.com";
+    }
+
+    $json = '{"receipt-data" : "' . $receipt . '" }';
+    //opening socket to itunes
+    $fp = fsockopen($verify_host, 443, $errno, $errstr, 30);
+    if (!$fp) {
+        // HTTP ERROR
+        return false;
+    } else {
+        //iTune's request url is /verifyReceipt     
+        $header = "POST /verifyReceipt HTTP/1.0\r\n";
+        $header .= "Content-Type: application/x-www-form-urlencoded\r\n";
+        $header .= "Content-Length: " . strlen($json) . "\r\n\r\n";
+        fputs($fp, $header . $json);
+        $res = '';
+        while (!feof($fp)) {
+            $step_res = fgets($fp, 1024);
+            $res = $res . $step_res;
+        }
+        fclose($fp);
+        //taking the JSON response
+        $json_source = substr($res, stripos($res, "\r\n\r\n{") + 4);
+        //decoding
+        $app_store_response_map = json_decode($json_source);
+        $app_store_response_status = $app_store_response_map->{'status'};
+        if ($app_store_response_status == 0) {//eithr OK or expired and needs to synch
+            //here are some fields from the json, btw.
+            $json_receipt = $app_store_response_map->{'receipt'};
+            $transaction_id = $json_receipt->{'transaction_id'};
+            $original_transaction_id = $json_receipt->{'original_transaction_id'};
+            $json_latest_receipt = $app_store_response_map->{'latest_receipt_info'};
+            return true;
+        } else {
+            return false;
+        }
+    }
+}
+
+$purchase_valid = false;
+
+switch ($VARS['os']) {
+    case 'android':
+        $purchase_valid = verify_market_in_app($VARS['data'], $VARS['sig'], GOOGLEPLAY_PUBLICKEY);
+        break;
+    case 'ios':
+        $purchase_valid = verify_app_store_in_app($VARS['data'], APP_STORE_SANDBOX);
+        break;
+}
+
+if ($purchase_valid) {
+    $creditstoadd = $database->select('shopcoins', ['coins'], ['merchid' => $VARS['id']])[0]['coins'];
+    $database->update('players', ['credits[+]' => $creditstoadd], ['uuid' => $_SESSION['uuid']]);
+    sendOK();
+} else {
+    sendError("Purchase not valid!", true);
+}

settings.template.php

@@ -18,3 +18,6 @@ define("PDB_CHARSET", "latin1");
 define("GEOCACHE_KEY", "");
 define("MUNZEE_KEY", "");
 define("MUNZEE_SECRET", "");
+
+define("GOOGLEPLAY_PUBLICKEY", "");
+define("APP_STORE_SANDBOX", true);

shopitems.php

@@ -0,0 +1,21 @@
+<?php
+
+require 'required.php';
+
+$shop = $database->select('shopitems', '*');
+$coins = $database->select('shopcoins', '*');
+
+if ($_SESSION['loggedin']) {
+    $balance = $database->select('players', ['credits'], ['uuid' => $_SESSION['uuid']])[0]['credits'];
+} else {
+    $balance = null;
+}
+
+$out = [
+    "status" => "OK",
+    "items" => $shop,
+    "coins" => $coins,
+    "balance" => $balance
+];
+
+echo json_encode($out);