From 265b85d489986d805cc9f5791df1478e374202a1 Mon Sep 17 00:00:00 2001
From: Floorb <132411956+Neetpone@users.noreply.github.com>
Date: Wed, 5 Jul 2023 03:22:09 -0400
Subject: [PATCH] chore: move paste actions to paste_action.php to require
 admin authentication

---
 includes/Models/AdminLog.php  |  8 +++--
 includes/common.php           | 12 ++++---
 includes/functions.php        | 13 ++++++++
 public/admin/common.php       | 17 ++++------
 public/admin/dashboard.php    |  2 ++
 public/admin/index.php        | 20 ++++++------
 public/admin/paste_action.php | 60 +++++++++++++++++++++++++++++++++++
 public/paste.php              | 37 ---------------------
 theme/bulma/view.php          |  3 +-
 9 files changed, 106 insertions(+), 66 deletions(-)
 create mode 100644 public/admin/paste_action.php

diff --git a/includes/Models/AdminLog.php b/includes/Models/AdminLog.php
index f50f797..750d08a 100644
--- a/includes/Models/AdminLog.php
+++ b/includes/Models/AdminLog.php
@@ -7,15 +7,19 @@ class AdminLog extends Model {
     public const ACTION_LOGIN = 0;
     public const ACTION_FAIL_LOGIN = 1;
     public const ACTION_EDIT_CONFIG = 2;
+    public const ACTION_HIDE_PASTE = 3;
+    public const ACTION_BLANK_PASTE = 4;
 
     public const ACTION_NAMES = [
         'Login',
         'Failed Login',
-        'Edit Config'
+        'Edit Config',
+        'Hide Paste',
+        'Blank Paste'
     ];
 
     protected $table = 'admin_logs';
-    protected $fillable = ['user_id', 'action', 'ip', 'time'];
+    protected $fillable = ['user_id', 'action', 'ip', 'time', 'message'];
 
     public $timestamps = false;
 
diff --git a/includes/common.php b/includes/common.php
index 2e16c0f..e738d98 100644
--- a/includes/common.php
+++ b/includes/common.php
@@ -33,12 +33,16 @@ function urlForPage($page = '') : string {
     return (isset($_SERVER['HTTPS']) ? 'https://' : 'http://') . $_SERVER['HTTP_HOST'] . rtrim(dirname($_SERVER['PHP_SELF']), '/\\') . '/' . $page;
 }
 
-function urlForPaste(Paste $paste) : string {
-    if (PP_MOD_REWRITE) {
-        return "/{$paste->id}";
+function urlForPaste(int | Paste $paste) : string {
+    if (!is_int($paste)) {
+        $paste = $paste->id;
     }
 
-    return "/paste.php?id={$paste->id}";
+    if (PP_MOD_REWRITE) {
+        return "/{$paste}";
+    }
+
+    return "/paste.php?id={$paste}";
 }
 
 function urlForReport(Paste $paste) : string {
diff --git a/includes/functions.php b/includes/functions.php
index c698bab..4fc8fe6 100644
--- a/includes/functions.php
+++ b/includes/functions.php
@@ -1,6 +1,8 @@
 <?php
 use Illuminate\Database\Eloquent\Collection;
+use PonePaste\Models\AdminLog;
 use PonePaste\Models\Paste;
+use PonePaste\Models\User;
 
 function tagsToHtml(array | Collection $tags) : string {
     $output = "";
@@ -332,4 +334,15 @@ function pp_setup_pagination() : array {
 
 function pp_output_paginator(int $per_page, int $current_page) : void {
 
+}
+
+function updateAdminHistory(User $admin, int $action, string $message = null) : void {
+    $log = new AdminLog([
+        'user_id' => $admin->id,
+        'action' => $action,
+        'ip' => $_SERVER['REMOTE_ADDR'],
+        'message' => $message
+    ]);
+
+    $log->save();
 }
\ No newline at end of file
diff --git a/public/admin/common.php b/public/admin/common.php
index 94f0dfe..9762837 100644
--- a/public/admin/common.php
+++ b/public/admin/common.php
@@ -5,25 +5,20 @@ if (!defined('IN_PONEPASTE')) {
 
 require_once('../../includes/common.php');
 
-use PonePaste\Models\AdminLog;
 use PonePaste\Models\User;
 
-function updateAdminHistory(User $admin, int $action) : void {
-    $log = new AdminLog([
-        'user_id' => $admin->id,
-        'action' => $action,
-        'ip' => $_SERVER['REMOTE_ADDR']
-    ]);
-
-    $log->save();
-}
-
 if ($current_user === null || $current_user->role < User::ROLE_MODERATOR) {
     header('Location: ..');
     die();
 }
 
 if (!isset($_SESSION['admin_login'])) {
+    // this is a hack, paste_id is set when POSTing to admin/paste_action.php, which we can only arrive at from a paste page
+    if (isset($_POST['paste_id'])) {
+        flashError('You must authenticate to perform that action.');
+        $_SESSION['redirect_back'] = urlForPaste($_POST['paste_id']);
+    }
+
     header('Location: .');
     exit();
 }
diff --git a/public/admin/dashboard.php b/public/admin/dashboard.php
index 15a0fc4..c86e2b5 100644
--- a/public/admin/dashboard.php
+++ b/public/admin/dashboard.php
@@ -231,6 +231,7 @@ $is_admin = $current_user->role >= User::ROLE_ADMIN;
                                 <td>Username</td>
                                 <td>Date</td>
                                 <td>Action</td>
+                                <td>Information</td>
                                 <td>IP Address</td>
                             </tr>
                             </thead>
@@ -240,6 +241,7 @@ $is_admin = $current_user->role >= User::ROLE_ADMIN;
                                     <td><?= pp_html_escape($entry->user->username); ?></td>
                                     <td><?= pp_html_escape($entry->time); ?></td>
                                     <td><?= pp_html_escape(AdminLog::ACTION_NAMES[$entry->action]); ?></td>
+                                    <td><?= !empty($entry->message) ? pp_html_escape($entry->message) : '[none]' ?></td>
                                     <td><?= $is_admin ? pp_html_escape($entry->ip) : '[masked]' ?></td>
                                 </tr>
                             <?php endforeach; ?>
diff --git a/public/admin/index.php b/public/admin/index.php
index 6ffa202..06ec3a8 100644
--- a/public/admin/index.php
+++ b/public/admin/index.php
@@ -5,16 +5,6 @@ require_once(__DIR__ . '/../../includes/common.php');
 use PonePaste\Models\User;
 use PonePaste\Models\AdminLog;
 
-function updateAdminHistory(User $admin, int $action) : void {
-    $log = new AdminLog([
-        'user_id' => $admin->id,
-        'action' => $action,
-        'ip' => $_SERVER['REMOTE_ADDR']
-    ]);
-
-    $log->save();
-}
-
 if ($current_user === null || $current_user->role < User::ROLE_MODERATOR) {
     header('Location: ..');
     die();
@@ -25,11 +15,18 @@ if (isset($_SESSION['admin_login']) && $_SESSION['admin_login']) {
     exit();
 }
 
+$flashes = getFlashes();
+
 if ($_SERVER['REQUEST_METHOD'] == 'POST') {
     if (pp_password_verify($_POST['password'], $current_user->admin_password_hash)) {
         updateAdminHistory($current_user, AdminLog::ACTION_LOGIN);
         $_SESSION['admin_login'] = true;
-        header("Location: dashboard.php");
+        if (isset($_SESSION['redirect_back'])) {
+            flashSuccess('You have been logged in. Please try your action again.');
+            header('Location: ' . $_SESSION['redirect_back']);
+        } else {
+            header("Location: dashboard.php");
+        }
         exit();
     } else {
         updateAdminHistory($current_user, AdminLog::ACTION_FAIL_LOGIN);
@@ -60,6 +57,7 @@ if ($_SERVER['REQUEST_METHOD'] == 'POST') {
         echo $msg;
     }
     ?>
+    <?php outputFlashes($flashes); ?>
     <form action="." method="post">
         <div class="top">
             <h1>PonePaste Admin Authentication</h1>
diff --git a/public/admin/paste_action.php b/public/admin/paste_action.php
new file mode 100644
index 0000000..ab44a37
--- /dev/null
+++ b/public/admin/paste_action.php
@@ -0,0 +1,60 @@
+<?php
+define('IN_PONEPASTE', 1);
+require_once(__DIR__ . '/common.php');
+
+use PonePaste\Models\AdminLog;
+use PonePaste\Models\Paste;
+
+if (empty($_POST['paste_id'])) {
+    echo "Error: No paste ID specified.";
+    die();
+}
+
+$paste = Paste::find((int) $_POST['paste_id']);
+
+if (!$paste) {
+    echo "Error: Paste not found.";
+    die();
+}
+
+if (isset($_POST['hide'])) {
+    if (!can('hide', $paste)) {
+        flashError('You do not have permission to hide this paste.');
+    } else {
+        $is_hidden = !$paste->is_hidden;
+
+        if ($is_hidden) {
+            $paste->reports()->update(['open' => false]);
+        }
+
+        $paste->is_hidden = $is_hidden;
+        $paste->save();
+        $redis->del('ajax_pastes'); /* Expire from Redis so it doesn't show up anymore */
+
+        updateAdminHistory($current_user, AdminLog::ACTION_HIDE_PASTE, 'Paste ' . $paste->id . ' ' . ($is_hidden ? 'hidden' : 'unhidden') . '.');
+        flashSuccess('Paste ' . ($is_hidden ? 'hidden' : 'unhidden') . '.');
+    }
+
+    header('Location: ' . urlForPaste($paste));
+    die();
+} elseif (isset($_POST['blank'])) {
+    if (!can('blank', $paste)) {
+        flashError('You do not have permission to blank this paste.');
+    } else {
+        $paste->content = '';
+        $paste->title = 'Removed by moderator';
+        $paste->tags()->detach();
+
+        $paste->save();
+        $redis->del('ajax_pastes'); /* Expire from Redis so it doesn't show up anymore */
+        updateAdminHistory($current_user, AdminLog::ACTION_BLANK_PASTE, 'Paste ' . $paste->id . 'blanked.');
+
+        flashSuccess('Paste contents blanked.');
+    }
+
+    header('Location: ' . urlForPaste($paste));
+    die();
+} else {
+    flashError('Internal Error: No action specified.');
+    header('Location: ' . urlForPaste($paste));
+}
diff --git a/public/paste.php b/public/paste.php
index 017198e..ecbaeed 100644
--- a/public/paste.php
+++ b/public/paste.php
@@ -102,43 +102,6 @@ if (isset($_POST['delete'])) {
     die();
 }
 
-if (isset($_POST['hide'])) {
-    if (!can('hide', $paste)) {
-        $error = 'You do not have permission to hide this paste.';
-        goto Not_Valid_Paste;
-    }
-
-    $is_hidden = !$paste->is_hidden;
-
-    if ($is_hidden) {
-        $paste->reports()->update(['open' => false]);
-    }
-
-    $paste->is_hidden = $is_hidden;
-    $paste->save();
-    $redis->del('ajax_pastes'); /* Expire from Redis so it doesn't show up anymore */
-    flashSuccess('Paste ' . ($is_hidden ? 'hidden' : 'unhidden') . '.');
-    header('Location: ' . urlForPaste($paste));
-    die();
-}
-
-if (isset($_POST['blank'])) {
-    if (!can('blank', $paste)) {
-        $error = 'You do not have permission to blank this paste.';
-        goto Not_Valid_Paste;
-    }
-
-    $paste->content = '';
-    $paste->title = 'Removed by moderator';
-    $paste->tags()->detach();
-
-    $paste->save();
-    $redis->del('ajax_pastes'); /* Expire from Redis so it doesn't show up anymore */
-    flashSuccess('Paste contents blanked.');
-    header('Location: ' . urlForPaste($paste));
-    die();
-}
-
 /* Verify paste password */
 $password_required = $p_password !== null && $p_password !== 'NONE';
 $password_valid = true;
diff --git a/theme/bulma/view.php b/theme/bulma/view.php
index e631604..28ee3fc 100644
--- a/theme/bulma/view.php
+++ b/theme/bulma/view.php
@@ -149,7 +149,8 @@
                 <?php if (can('hide', $paste)): ?>
                     <div class="mod-tools">
                         <p>Moderation Tools</p>
-                        <form method="post">
+                        <form action="/admin/paste_action.php" method="post">
+                            <input type="hidden" name="paste_id" value="<?= $paste->id ?>" />
                             <?php if (isset($csrf_token)): ?>
                                 <input type="hidden" name="csrf_token" value="<?= $csrf_token ?>"/>
                             <?php endif; ?>