s2member / includes / classes / paypal-notify-in.inc.php

paypal-notify-in.inc.php in s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions 110731, at includes/classes/paypal-notify-in.inc.php

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1	<?php
2	/**
3	* s2Member's PayPal® IPN handler ( inner processing routines ).
4	*
5	* Copyright: © 2009-2011
6	* {@link http://www.websharks-inc.com/ WebSharks, Inc.}
7	* ( coded in the USA )
8	*
9	* Released under the terms of the GNU General Public License.
10	* You should have received a copy of the GNU General Public License,
11	* along with this software. In the main directory, see: /licensing/
12	* If not, see: {@link http://www.gnu.org/licenses/}.
13	*
14	* @package s2Member\PayPal
15	* @since 3.5
16	*/
17	if (realpath (__FILE__) === realpath ($_SERVER["SCRIPT_FILENAME"]))
18	exit ("Do not access this file directly.");
19	/**/
20	if (!class_exists ("c_ws_plugin__s2member_paypal_notify_in"))
21	{
22	/**
23	* s2Member's PayPal® IPN handler ( inner processing routines ).
24	*
25	* @package s2Member\PayPal
26	* @since 3.5
27	*/
28	class c_ws_plugin__s2member_paypal_notify_in
29	{
30	/**
31	* Handles PayPal® IPN processing.
32	*
33	* These same routines also handle s2Member Pro/PayPal® Pro operations;
34	* giving you the ability ( as needed ) to Hook into these routines using
35	* WordPress® Hooks/Filters; as seen in the source code below.
36	*
37	* Please do NOT modify the source code directly.
38	* Instead, use WordPress® Hooks/Filters.
39	*
40	* For example, if you'd like to add your own custom conditionals, use:
41	* ``add_filter ("ws_plugin__s2member_during_paypal_notify_conditionals", "your_function");``
42	*
43	* @package s2Member\PayPal
44	* @since 3.5
45	*
46	* @attaches-to: ``add_action("init");``
47	*
48	* @return null Or exits script execution after handling IPN procesing.
49	*/
50	public static function paypal_notify ()
51	{
52	global $current_site, $current_blog; /* For Multisite support. */
53	/**/
54	do_action ("ws_plugin__s2member_before_paypal_notify", get_defined_vars ());
55	/**/
56	if (!empty ($_GET["s2member_paypal_notify"]) && ($GLOBALS["WS_PLUGIN__"]["s2member"]["o"]["paypal_business"] \|\| !empty ($_GET["s2member_paypal_proxy"])))
57	{
58	@ignore_user_abort (true); /* Important. Continue processing even if/when the connection is broken by the sending party. */
59	/**/
60	include_once ABSPATH . "wp-admin/includes/admin.php"; /* Get administrative functions. Needed for `wp_delete_user()`. */
61	/**/
62	c_ws_plugin__s2member_email_configs::email_config_release (); /* Release Filters on wp_mail() / From: headers. */
63	/**/
64	if (is_array ($paypal = c_ws_plugin__s2member_paypal_utilities::paypal_postvars ()) && ($_paypal = $paypal) && ($_paypal_s = serialize ($_paypal)))
65	{
66	$paypal["s2member_log"][] = "IPN received on: " . date ("D M j, Y g:i:s a T");
67	$paypal["s2member_log"][] = "s2Member POST vars verified " . ((!empty ($paypal["proxy_verified"])) ? "with a Proxy Key" : "through a POST back to PayPal®.");
68	/**/
69	$payment_status_issues = "/^(failed\|denied\|expired\|refunded\|partially_refunded\|reversed\|reversal\|canceled_reversal\|voided)$/i";
70	/**/
71	$paypal["subscr_gateway"] = (!empty ($_GET["s2member_paypal_proxy"])) ? esc_html (trim (stripslashes ($_GET["s2member_paypal_proxy"]))) : "paypal";
72	/**/
73	if (empty ($paypal["custom"]) && !empty ($paypal["recurring_payment_id"])) /* Lookup on Recurring Profiles? */
74	$paypal["custom"] = c_ws_plugin__s2member_utils_users::get_user_custom_with ($paypal["recurring_payment_id"]);
75	/**/
76	if (!empty ($paypal["custom"]) && preg_match ("/^" . preg_quote (preg_replace ("/\:([0-9]+)$/", "", $_SERVER["HTTP_HOST"]), "/") . "/i", $paypal["custom"]))
77	{
78	$paypal["s2member_log"][] = "s2Member originating domain ( `\$_SERVER[\"HTTP_HOST\"]` ) validated.";
79	/**/
80	eval ('foreach(array_keys(get_defined_vars())as$__v)$__refs[$__v]=&$$__v;');
81	if (!apply_filters ("ws_plugin__s2member_during_paypal_notify_conditionals", false, get_defined_vars ()))
82	{
83	unset ($__refs, $__v); /* Unset defined __refs, __v. */
84	/**/
85	if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_virtual_terminal::cp (get_defined_vars ())))
86	$paypal = $_paypal_cp;
87	/**/
88	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_express_checkout::cp (get_defined_vars ())))
89	$paypal = $_paypal_cp;
90	/**/
91	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_cart::cp (get_defined_vars ())))
92	$paypal = $_paypal_cp;
93	/**/
94	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_send_money::cp (get_defined_vars ())))
95	$paypal = $_paypal_cp;
96	/**/
97	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_web_accept_sp::cp (get_defined_vars ())))
98	$paypal = $_paypal_cp;
99	/**/
100	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_subscr_or_wa_w_level::cp (get_defined_vars ())))
101	$paypal = $_paypal_cp;
102	/**/
103	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_rec_profile_creation_w_level::cp (get_defined_vars ())))
104	$paypal = $_paypal_cp;
105	/**/
106	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_subscr_modify_w_level::cp (get_defined_vars ())))
107	$paypal = $_paypal_cp;
108	/**/
109	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_subscr_or_rp_payment_w_level::cp (get_defined_vars ())))
110	$paypal = $_paypal_cp;
111	/**/
112	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_subscr_or_rp_payment_failed_w_level::cp (get_defined_vars ())))
113	$paypal = $_paypal_cp;
114	/**/
115	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_subscr_or_rp_cancellation_w_level::cp (get_defined_vars ())))
116	$paypal = $_paypal_cp;
117	/**/
118	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_subscr_or_rp_eots_w_level::cp (get_defined_vars ())))
119	$paypal = $_paypal_cp;
120	/**/
121	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_sp_refund_reversal::cp (get_defined_vars ())))
122	$paypal = $_paypal_cp;
123	/**/
124	else /* Ignoring this IPN request. The txn_type/status does NOT require any action. */
125	$paypal["s2member_log"][] = "Ignoring this IPN request. The `txn_type/status` does NOT require any action on the part of s2Member.";
126	}
127	else /* Else a custom conditional has been applied by Filters. */
128	unset ($__refs, $__v); /* Unset defined __refs, __v. */
129	}
130	/**/
131	else if (!empty ($paypal["txn_type"]) && preg_match ("/^recurring_payment_profile_cancel$/i", $paypal["txn_type"]))
132	{
133	$paypal["s2member_log"][] = "Transaction type ( `recurring_payment_profile_cancel` ), but there is no match to an existing account; so verification of `\$_SERVER[\"HTTP_HOST\"]` was not possible.";
134	$paypal["s2member_log"][] = "It's likely this account was just upgraded/downgraded by s2Member Pro; so the Subscr. ID has probably been updated on-site; nothing to worry about here.";
135	}
136	/**/
137	else if (!empty ($paypal["txn_type"]) && preg_match ("/^recurring_/i", $paypal["txn_type"])) /* Otherwise, is this a ^recurring_ txn_type? */
138	$paypal["s2member_log"][] = "Transaction type ( `^recurring_?` ), but there is no match to an existing account; so verification of `\$_SERVER[\"HTTP_HOST\"]` was not possible.";
139	/**/
140	else /* Else, use the default ``$_SERVER["HTTP_HOST"]`` error. */
141	$paypal["s2member_log"][] = "Unable to verify `\$_SERVER[\"HTTP_HOST\"]`. Please check the `custom` value in your Button Code. It MUST start with your domain name.";
142	}
143	/**/
144	else /* Extensive log reporting here. This is an area where many site owners find trouble. Depending on server configuration; remote HTTPS connections may fail. */
145	{
146	$paypal["s2member_log"][] = "Unable to verify \$_POST vars. This is most likely related to an invalid configuration of s2Member, or a problem with server compatibility.";
147	$paypal["s2member_log"][] = "If you're absolutely SURE that your configuration is valid, you may want to run some tests on your server, just to be sure \$_POST variables are populated, and that your server is able to connect/communicate with your Payment Gateway over an HTTPS connection.";
148	$paypal["s2member_log"][] = "s2Member uses the `WP_Http` class for remote connections; which will try to use `cURL` first, and then fall back on the `FOPEN` method when `cURL` is not available. On a Windows® server, you may have to disable your `cURL` extension; and instead, set `allow_url_fopen = yes` in your php.ini file. The `cURL` extension (usually) does NOT support SSL connections on a Windows® server.";
149	$paypal["s2member_log"][] = "Please see this thread: `http://www.primothemes.com/forums/viewtopic.php?f=36&t=2636` for details regarding the ideal server configuration for s2Member.";
150	$paypal["s2member_log"][] = var_export ($_REQUEST, true); /* Recording _POST + _GET vars for analysis and debugging. */
151	}
152	/*
153	Add IPN proxy ( when available ) to the ``$paypal`` array.
154	*/
155	if (!empty ($_GET["s2member_paypal_proxy"]))
156	$paypal["s2member_paypal_proxy"] = $_GET["s2member_paypal_proxy"];
157	/*
158	Add IPN proxy use vars ( when available ) to the ``$paypal`` array.
159	*/
160	if (!empty ($_GET["s2member_paypal_proxy_use"]))
161	$paypal["s2member_paypal_proxy_use"] = $_GET["s2member_paypal_proxy_use"];
162	/*
163	Also add IPN proxy self-verification ( when available ) to the ``$paypal`` array.
164	*/
165	if (!empty ($_GET["s2member_paypal_proxy_verification"]))
166	$paypal["s2member_paypal_proxy_verification"] = $_GET["s2member_paypal_proxy_verification"];
167	/*
168	If debugging/logging is enabled; we need to append ``$paypal`` to the log file.
169	Logging now supports Multisite Networking as well.
170	*/
171	$logv = c_ws_plugin__s2member_utilities::ver_details ();
172	$log4 = $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"] . "\nUser-Agent: " . $_SERVER["HTTP_USER_AGENT"];
173	$log4 = (is_multisite () && !is_main_site ()) ? ($_log4 = $current_blog->domain . $current_blog->path) . "\n" . $log4 : $log4;
174	$log2 = (is_multisite () && !is_main_site ()) ? "paypal-ipn-4-" . trim (preg_replace ("/[^a-z0-9]/i", "-", $_log4), "-") . ".log" : "paypal-ipn.log";
175	/**/
176	if ($GLOBALS["WS_PLUGIN__"]["s2member"]["o"]["gateway_debug_logs"])
177	if (is_dir ($logs_dir = $GLOBALS["WS_PLUGIN__"]["s2member"]["c"]["logs_dir"]))
178	if (is_writable ($logs_dir) && c_ws_plugin__s2member_utils_logs::archive_oversize_log_files ())
179	file_put_contents ($logs_dir . "/" . $log2, $logv . "\n" . $log4 . "\n" . var_export ($paypal, true) . "\n\n", FILE_APPEND);
180	/**/
181	eval ('foreach(array_keys(get_defined_vars())as$__v)$__refs[$__v]=&$$__v;');
182	do_action ("ws_plugin__s2member_during_paypal_notify", get_defined_vars ());
183	unset ($__refs, $__v); /* Unset defined __refs, __v. */
184	/**/
185	header ("HTTP/1.0 200 OK"); /* Send a 200 OK status header. */
186	header ("Content-Type: text/plain; charset=utf-8"); /* With text/plain ( supporting a possible return URL ). */
187	exit (((!empty ($paypal["s2member_paypal_proxy_return_url"])) ? $paypal["s2member_paypal_proxy_return_url"] : ""));
188	}
189	/**/
190	eval ('foreach(array_keys(get_defined_vars())as$__v)$__refs[$__v]=&$$__v;');
191	do_action ("ws_plugin__s2member_after_paypal_notify", get_defined_vars ());
192	unset ($__refs, $__v); /* Unset defined __refs, __v. */
193	}
194	}
195	}
196	?>