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pay-to-view-all.php
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pay-to-view-all.php
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<?php
/*
Plugin Name: Pay to view all
Plugin URI: https://github.com/bestony/pay-to-view-all
Description: 本插件(Pay to view all)可以隐藏文章中的任意部分内容，当访客支付后即可浏览隐藏的内容
Version: 0.0.1
Author: Bestony
Author URI: https://www.ixiqin.com
Function Prefix: ptva_
*/
/* Copyright 2018 Bestony xiqingongzi@gmail.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* Include Payjs Class
*/
include_once "payjs/Payjs.php";
use \Payjs\Payjs;
/**
* add submenu to general menu
*/
add_action('admin_menu', 'ptva_add_submenu_page');
function ptva_add_submenu_page(){
add_submenu_page( 'options-general.php','付费阅读', '付费阅读设置', 'manage_options', 'pay-to-view-all-setting', 'ptva_submenu_page_callback' );
}
/**
* submenu page callback, use to show options
*/
function ptva_submenu_page_callback(){
?> <div class="wrap">
<h2>付费阅读配置</h2>
<?php
if ($_POST['update_options']=='true') {//若提交了表单，则保存变量
update_option('ptva_merchant_id', sanitize_text_field($_POST['ptva_merchant_id']));
update_option('ptva_merchant_key', sanitize_text_field($_POST['ptva_merchant_key']));
update_option('ptva_post_fee', sanitize_text_field($_POST['ptva_post_fee']));
update_option('ptva_summary_number', sanitize_text_field($_POST['ptva_summary_number']));
update_option('ptva_mode', sanitize_text_field($_POST['ptva_mode']));
update_option('ptva_order_prefix',sanitize_text_field($_POST['ptva_order_prefix']));
wp_verify_nonce( $_POST['pay_to_view_all_field'] );
echo '<div id="message" class="updated below-h2"><p>设置保存成功!</p></div>';//保存完毕显示文字提示
}
$mode = get_option('ptva_mode')?get_option('ptva_mode'):"white";
$prefix = get_option('ptva_order_prefix')?get_option('ptva_order_prefix'):"pay_to_view_all";
?>
<form method="POST" action="">
<input type="hidden" name="update_options" value="true" />
<?php wp_nonce_field( 'pay_to_view_all_field' );?>
<table class="form-table">
<tr>
<th scope="row">模式:</th>
<td>
<select name="ptva_mode">
<option value="white" <?php selected($mode,'white') ?>>「白名单模式」：全站付费，指定文章免费</option>
<option value="black" <?php selected($mode,'black') ?>>「黑名单模式」：全站免费，指定文章付费</option>
</select>
</td>
</tr>
<tr>
<th scope="row">商户ID:</th>
<td><input type="text" name="ptva_merchant_id" id="ptva_merchant_id" value="<?php esc_attr_e(get_option('ptva_merchant_id')); ?>" /></td>
</tr>
<tr>
<th scope="row">商户 Key:</th>
<td><input type="text" name="ptva_merchant_key" id="ptva_merchant_key" value="<?php esc_attr_e(get_option('ptva_merchant_key')); ?>" /></td>
</tr>
<tr>
<th scope="row">文章单价(单位为分，最小值为1):</th>
<td><input type="text" name="ptva_post_fee" id="ptva_post_fee" value="<?php esc_attr_e(get_option('ptva_post_fee')); ?>" /></td>
</tr>
<tr>
<th scope="row">截断长短（单位为字，建议200-300）:</th>
<td><input type="text" name="ptva_summary_number" id="ptva_summary_number" value="<?php esc_attr_e(get_option('ptva_summary_number')); ?>" /></td>
</tr>
<tr>
<th scope="row">订单前缀（仅支持英文）:</th>
<td><input type="text" name="ptva_order_prefix" id="ptva_order_prefix" value="<?php esc_attr_e($prefix); ?>" /></td>
</tr>
</table>
<p><input type="submit" class="button-primary" name="admin_options" value="保存配置"/></p>
</form>
</div>
<?php
}
/**
* Core Function , Use to protect post form unpay visitor
*/
function ptva_prevent_unpay_user( $content ) {
$summary_number = get_option('ptva_summary_number');
$mode = get_option('ptva_mode');
$user_id = get_current_user_id();
if ($mode == 'white'){
if(is_home()){
return wp_trim_words($content,$summary_number,"...<hr>请<strong><a href='/wp-login.php'>登陆</a></strong>并支付后查看更多内容");
}else{
if(is_user_logged_in()){
if(ptva_check_user_pay() || $user_id == 1){
return $content;
}else{
return wp_trim_words($content,$summary_number,"...<hr>".ptva_get_qrcode()."");
}
}else{
return wp_trim_words($content,$summary_number,"...<hr>请<strong>支付</strong>后查看更多内容");
}
}
}else{
return $content;
}
}
add_filter( 'the_content', 'ptva_prevent_unpay_user' );
/**
* Core Function : Check user pay record
*/
function ptva_check_user_pay(){
$id = get_the_ID();
$user = get_current_user_id();
$postData = get_post_meta($id,'post_paid_user',true);
$userArray = explode(",",$postData);
if (in_array($user,$userArray)){
return true;
}else{
return false;
}
}
/**
* Generate QRCode From Payjs
*/
function ptva_request_qrcode($id,$user){
$mid = get_option('ptva_merchant_id');
$mkey = get_option('ptva_merchant_key');
$amount = get_option('ptva_post_fee');
$path = get_site_url()."/pay_to_view_all";
$prefix = get_option('ptva_order_prefix');
$payjs = new Payjs([
'merchantid' => $mid,
'merchantkey' => $mkey,
'notifyurl' => $path,
'toobject' => true
]);
$order_id = $prefix.'_'.$id.'_'.time();
$order_title ='付费阅读-文章编号：'.($id);
$attach = $id ."+".$user;
$image = $payjs->QRPay($order_id,$amount,$order_title,$attach)->qrcode;
return $image;
}
/**
* Get QRCode from Post Meta.
* Use Post meta to save QRCode
*/
function ptva_get_qrcode(){
$id = get_the_ID();
$user = get_current_user_id();
$cacheData = get_post_meta($id,'paid_qrcode_cache_'.$user,true);
if($cacheData === '0'){
$image = ptva_request_qrcode($id,$user);
update_post_meta($id,'paid_qrcode_cache_'.$user,$image.",".time());
}else{
$data = explode(",",$cacheData);
if ((time()-$data[1]) > 5400){
$image = ptva_request_qrcode($id,$user);
update_post_meta($id,'paid_qrcode_cache_'.$user,$image.",".time());
}else{
$image = $data[0];
}
}
if ($image == ''){
update_post_meta($id,'paid_qrcode_cache_'.$user,'0');
return ptva_get_qrcode();
}
return '<div id="ptva_secure_area" data-id="'.$id.'" data-user="'.$user.'" style="text-align:center"><P>支付查看剩下的内容</p><img src="'.$image.'" alt="付费码"><P>支付完成后，刷新页面即可查看全文。</p></div>';
}
/**
* get options from request to check pay status
*/
add_action('init', 'ptva_pay_check');
function ptva_pay_check() {
if($_SERVER["REQUEST_URI"] == '/pay_to_view_all') {
if(ptva_checkSign($_POST)){
$query_string = sanitize_text_field($_POST['attach']);
$array = explode("+",$query_string);
$postData = get_post_meta($array[0],'post_paid_user',true);
$postData = $postData.",".$array[1];
update_post_meta($array[0],'post_paid_user',$postData);
update_post_meta($array[0],'paid_qrcode_cache_'.$array[1],'0');
echo "ok";
}else{
echo "off";
}
exit();
}
}
function ptva_checkSign($array){
$key = get_option('ptva_merchant_key');
$old_sign = $array['sign'];
unset($array['sign']);
ksort($array);
$new_sign = strtoupper(md5(urldecode(http_build_query($array)).'&key='.$key));
if ($old_sign == $new_sign){
return true;
}else{
return false;
}
}
/**
* Add Init Meta To every post
*/
function ptva_add_meta_to_all_post() {
$args = array(
'posts_per_page' => -1,
'post_type' => 'post',
'suppress_filters' => true
);
$posts_array = get_posts( $args );
foreach($posts_array as $post_array)
{
add_post_meta($post_array->ID, 'post_paid_user', '0',true);
}
}
register_activation_hook( __FILE__, 'ptva_add_meta_to_all_post' );