From 39e8fb2036945303836c461a61f133b0059c8991 Mon Sep 17 00:00:00 2001
From: Christian Cleberg <hello@cleberg.net>
Date: Mon, 22 May 2023 15:19:08 -0500
Subject: initial commit

---
 action.php | 171 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 171 insertions(+)
 create mode 100644 action.php

(limited to 'action.php')

diff --git a/action.php b/action.php
new file mode 100644
index 0000000..b6bb2da
--- /dev/null
+++ b/action.php
@@ -0,0 +1,171 @@
+<?php
+    require __DIR__ . '/vendor/autoload.php';
+
+    session_start();
+
+    $consumer_key = getenv('CONSUMER_KEY');
+    $consumer_secret = getenv('CONSUMER_SECRET');
+    $client = new Tumblr\API\Client($consumer_key, $consumer_secret);
+    $requestHandler = $client->getRequestHandler();
+    $requestHandler->setBaseUrl('https://www.tumblr.com/');
+
+    // Check if the user has already authenticated
+    if(isset($_SESSION['perm_token']) && !empty($_SESSION['perm_token']) && isset($_SESSION['perm_secret']) && !empty($_SESSION['perm_secret'])) {
+        $token = $_SESSION['perm_token'];
+        $token_secret = $_SESSION['perm_secret'];
+    }
+    // Check if the user was here earlier by checking cookies
+    else if (isset($_COOKIE['perm_token']) && !empty($_COOKIE['perm_token']) && isset($_COOKIE['perm_secret']) && !empty($_COOKIE['perm_secret'])) {
+        $token = $_COOKIE['perm_token'];
+        $token_secret = $_COOKIE['perm_secret'];
+    }
+    // Check if this is the user's first visit
+    else if (!isset($_GET['oauth_verifier'])) {
+
+        // Grab the oauth token
+        $resp = $requestHandler->request('POST', 'oauth/request_token', array());
+        $out = $result = $resp->body;
+        $data = array();
+        parse_str($out, $data);
+
+        // Save temporary tokens to session
+        $_SESSION['tmp_token'] = $data['oauth_token'];
+        $_SESSION['tmp_secret'] = $data['oauth_token_secret'];
+
+        // Redirect user to Tumblr auth page
+        session_regenerate_id(true);
+        $header_url = 'https://www.tumblr.com/oauth/authorize?oauth_token=' . $data['oauth_token'];
+        header('Location: ' . $header_url);
+        die();
+
+    }
+    // Check if the user was just sent back from the Tumblr authentication site
+    else {
+
+        $verifier = $_GET['oauth_verifier'];
+
+        // Use the stored temporary tokens
+        $client->setToken($_SESSION['tmp_token'], $_SESSION['tmp_secret']);
+
+        // Access the permanent tokens
+        $resp = $requestHandler->request('POST', 'oauth/access_token', array('oauth_verifier' => $verifier));
+        $out = $result = $resp->body;
+        $data = array();
+        parse_str($out, $data);
+
+        // Set permanent tokens
+        $token = $data['oauth_token'];
+        $token_secret = $data['oauth_token_secret'];;
+        $_SESSION['perm_token'] = $data['oauth_token'];
+        $_SESSION['perm_secret'] = $data['oauth_token_secret'];
+
+        // Set cookies in case the user comes back later
+        setcookie("perm_token", $_SESSION['perm_token']);
+        setcookie("perm_secret", $_SESSION['perm_secret']);
+
+        // Redirect user to homepage for a clean URL
+        session_regenerate_id(true);
+        $header_url = 'https://example.com/vox-populi/';
+        header('Location: ' . $header_url);
+        die();
+
+    }
+
+    // Authenticate via OAuth
+    $client = new Tumblr\API\Client(
+        $consumer_key,
+        $consumer_secret,
+        $token,
+        $token_secret
+    );
+
+    // Set up a function to check if variables are blank later (this function accepts 0, 0.0, and "0" as valid)
+    function not_blank($value) {
+        return !empty($value) && isset($value) && $value !== '';
+    }
+
+    // Grab the callback URL
+    $url = $_GET['callback'];
+    if (!not_blank($url)) {
+        $url = 'Location: https://example.com/vox-populi/';
+    }
+
+    // See what action we need to do
+    $action = $_GET['action'];
+    if (!not_blank($action)) {
+        header('Location: ' . $url);
+        die();
+    }
+
+    // Follow a new blog
+    if ($action == "follow") {
+        $blogName = $_GET['blog_name'];
+        if(not_blank($blogName)) {
+            $client->follow($blogName);
+            print 'success';
+        } else {
+            print 'failure';
+        }
+    }
+
+    // Unfollow a blog
+    if ($action == "unfollow") {
+        $blogName = $_GET['blog_name'];
+        if(not_blank($blogName)) {
+            $client->unfollow($blogName);
+            print 'success';
+        } else {
+            print 'failure';
+        }
+    }
+
+    // Like a post
+    if ($action == "like") {
+        $postId = $_GET['post_id'];
+        $reblogKey = $_GET['reblog_key'];
+        if(not_blank($postId) && not_blank($reblogKey)) {
+            $client->like($postId, $reblogKey);
+            print 'success';
+        } else {
+            print 'failure';
+        }
+    }
+
+    // Unlike a post
+    if ($action == "unlike") {
+        $postId = $_GET['post_id'];
+        $reblogKey = $_GET['reblog_key'];
+        if(not_blank($postId) && not_blank($reblogKey)) {
+            $client->unlike($postId, $reblogKey);
+            print 'success';
+        } else {
+            print 'failure';
+        }
+    }
+
+    // Reblog a post
+    if ($action == "reblog") {
+        $blogName = $_GET['blog_name'];
+        $id = $_GET['id'];
+        $reblogKey = $_GET['reblog_key'];
+        if(not_blank($blogName) && not_blank($id) && not_blank($reblogKey)) {
+            $client->reblogPost($blogName, $id, $reblogKey);
+            print 'success';
+        } else {
+            print 'failure';
+        }
+    }
+
+    // Unreblog a post
+    if ($action == "reblog") {
+        $blogName = $_GET['blog_name'];
+        $id = $_GET['id'];
+        $reblogKey = $_GET['reblog_key'];
+        if(not_blank($blogName) && not_blank($id) && not_blank($reblogKey)) {
+            $client->deletePost($blogName, $id, $reblogKey);
+            print 'success';
+        } else {
+            print 'failure';
+        }
+    }
+?>
-- 
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