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 111017, 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	$email_configs_were_on = c_ws_plugin__s2member_email_configs::email_config_status (); /* Filters on? */
63	c_ws_plugin__s2member_email_configs::email_config_release (); /* Release s2Member Filters. */
64	/**/
65	if (is_array ($paypal = c_ws_plugin__s2member_paypal_utilities::paypal_postvars ()) && ($_paypal = $paypal) && ($_paypal_s = serialize ($_paypal)))
66	{
67	$paypal["s2member_log"][] = "IPN received on: " . date ("D M j, Y g:i:s a T");
68	$paypal["s2member_log"][] = "s2Member POST vars verified " . ((!empty ($paypal["proxy_verified"])) ? "with a Proxy Key" : "through a POST back to PayPal®.");
69	/**/
70	$payment_status_issues = "/^(failed\|denied\|expired\|refunded\|partially_refunded\|reversed\|reversal\|canceled_reversal\|voided)$/i";
71	/**/
72	$paypal["subscr_gateway"] = (!empty ($_GET["s2member_paypal_proxy"])) ? esc_html (trim (stripslashes ($_GET["s2member_paypal_proxy"]))) : "paypal";
73	/**/
74	if (empty ($paypal["custom"]) && !empty ($paypal["recurring_payment_id"])) /* Lookup on Recurring Profiles? */
75	$paypal["custom"] = c_ws_plugin__s2member_utils_users::get_user_custom_with ($paypal["recurring_payment_id"]);
76	/**/
77	if (!empty ($paypal["custom"]) && preg_match ("/^" . preg_quote (preg_replace ("/\:([0-9]+)$/", "", $_SERVER["HTTP_HOST"]), "/") . "/i", $paypal["custom"]))
78	{
79	$paypal["s2member_log"][] = "s2Member originating domain ( `\$_SERVER[\"HTTP_HOST\"]` ) validated.";
80	/**/
81	eval ('foreach(array_keys(get_defined_vars())as$__v)$__refs[$__v]=&$$__v;');
82	if (!apply_filters ("ws_plugin__s2member_during_paypal_notify_conditionals", false, get_defined_vars ()))
83	{
84	unset ($__refs, $__v); /* Unset defined __refs, __v. */
85	/**/
86	if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_virtual_terminal::cp (get_defined_vars ())))
87	$paypal = $_paypal_cp;
88	/**/
89	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_express_checkout::cp (get_defined_vars ())))
90	$paypal = $_paypal_cp;
91	/**/
92	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_cart::cp (get_defined_vars ())))
93	$paypal = $_paypal_cp;
94	/**/
95	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_send_money::cp (get_defined_vars ())))
96	$paypal = $_paypal_cp;
97	/**/
98	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_web_accept_sp::cp (get_defined_vars ())))
99	$paypal = $_paypal_cp;
100	/**/
101	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_wa_ccaps_wo_level::cp (get_defined_vars ())))
102	$paypal = $_paypal_cp;
103	/**/
104	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_subscr_or_wa_w_level::cp (get_defined_vars ())))
105	$paypal = $_paypal_cp;
106	/**/
107	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_rec_profile_creation_w_level::cp (get_defined_vars ())))
108	$paypal = $_paypal_cp;
109	/**/
110	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_subscr_modify_w_level::cp (get_defined_vars ())))
111	$paypal = $_paypal_cp;
112	/**/
113	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_subscr_or_rp_payment_w_level::cp (get_defined_vars ())))
114	$paypal = $_paypal_cp;
115	/**/
116	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_subscr_or_rp_payment_failed_w_level::cp (get_defined_vars ())))
117	$paypal = $_paypal_cp;
118	/**/
119	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_subscr_or_rp_cancellation_w_level::cp (get_defined_vars ())))
120	$paypal = $_paypal_cp;
121	/**/
122	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_subscr_or_rp_eots_w_level::cp (get_defined_vars ())))
123	$paypal = $_paypal_cp;
124	/**/
125	else if (($_paypal_cp = c_ws_plugin__s2member_paypal_notify_in_sp_refund_reversal::cp (get_defined_vars ())))
126	$paypal = $_paypal_cp;
127	/**/
128	else /* Ignoring this IPN request. The txn_type/status does NOT require any action. */
129	$paypal["s2member_log"][] = "Ignoring this IPN request. The `txn_type/status` does NOT require any action on the part of s2Member.";
130	}
131	else /* Else a custom conditional has been applied by Filters. */
132	unset ($__refs, $__v); /* Unset defined __refs, __v. */
133	}
134	/**/
135	else if (!empty ($paypal["txn_type"]) && preg_match ("/^recurring_payment_profile_cancel$/i", $paypal["txn_type"]))
136	{
137	$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.";
138	$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.";
139	}
140	/**/
141	else if (!empty ($paypal["txn_type"]) && preg_match ("/^recurring_/i", $paypal["txn_type"])) /* Otherwise, is this a ^recurring_ txn_type? */
142	$paypal["s2member_log"][] = "Transaction type ( `^recurring_?` ), but there is no match to an existing account; so verification of `\$_SERVER[\"HTTP_HOST\"]` was not possible.";
143	/**/
144	else /* Else, use the default ``$_SERVER["HTTP_HOST"]`` error. */
145	$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.";
146	}
147	/**/
148	else /* Extensive log reporting here. This is an area where many site owners find trouble. Depending on server configuration; remote HTTPS connections may fail. */
149	{
150	$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.";
151	$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.";
152	$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.";
153	$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.";
154	$paypal["s2member_log"][] = var_export ($_REQUEST, true); /* Recording _POST + _GET vars for analysis and debugging. */
155	}
156	/**/
157	if ($email_configs_were_on) /* Back on? */
158	c_ws_plugin__s2member_email_configs::email_config ();
159	/*
160	Add IPN proxy ( when available ) to the ``$paypal`` array.
161	*/
162	if (!empty ($_GET["s2member_paypal_proxy"]))
163	$paypal["s2member_paypal_proxy"] = $_GET["s2member_paypal_proxy"];
164	/*
165	Add IPN proxy use vars ( when available ) to the ``$paypal`` array.
166	*/
167	if (!empty ($_GET["s2member_paypal_proxy_use"]))
168	$paypal["s2member_paypal_proxy_use"] = $_GET["s2member_paypal_proxy_use"];
169	/*
170	Also add IPN proxy self-verification ( when available ) to the ``$paypal`` array.
171	*/
172	if (!empty ($_GET["s2member_paypal_proxy_verification"]))
173	$paypal["s2member_paypal_proxy_verification"] = $_GET["s2member_paypal_proxy_verification"];
174	/*
175	If debugging/logging is enabled; we need to append ``$paypal`` to the log file.
176	Logging now supports Multisite Networking as well.
177	*/
178	$logv = c_ws_plugin__s2member_utilities::ver_details ();
179	$logm = c_ws_plugin__s2member_utilities::mem_details ();
180	$log4 = $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"] . "\nUser-Agent: " . $_SERVER["HTTP_USER_AGENT"];
181	$log4 = (is_multisite () && !is_main_site ()) ? ($_log4 = $current_blog->domain . $current_blog->path) . "\n" . $log4 : $log4;
182	$log2 = (is_multisite () && !is_main_site ()) ? "paypal-ipn-4-" . trim (preg_replace ("/[^a-z0-9]/i", "-", $_log4), "-") . ".log" : "paypal-ipn.log";
183	/**/
184	if ($GLOBALS["WS_PLUGIN__"]["s2member"]["o"]["gateway_debug_logs"])
185	if (is_dir ($logs_dir = $GLOBALS["WS_PLUGIN__"]["s2member"]["c"]["logs_dir"]))
186	if (is_writable ($logs_dir) && c_ws_plugin__s2member_utils_logs::archive_oversize_log_files ())
187	file_put_contents ($logs_dir . "/" . $log2, $logv . "\n" . $logm . "\n" . $log4 . "\n" . var_export ($paypal, true) . "\n\n", FILE_APPEND);
188	/**/
189	eval ('foreach(array_keys(get_defined_vars())as$__v)$__refs[$__v]=&$$__v;');
190	do_action ("ws_plugin__s2member_during_paypal_notify", get_defined_vars ());
191	unset ($__refs, $__v); /* Unset defined __refs, __v. */
192	/**/
193	status_header (200); /* Send a 200 OK status header. */
194	header ("Content-Type: text/plain; charset=utf-8"); /* Content-Type text/plain with UTF-8. */
195	eval ('while (@ob_end_clean ());'); /* End/clean all output buffers that may or may not exist. */
196	/**/
197	exit (((!empty ($paypal["s2member_paypal_proxy_return_url"])) ? $paypal["s2member_paypal_proxy_return_url"] : ""));
198	}
199	/**/
200	eval ('foreach(array_keys(get_defined_vars())as$__v)$__refs[$__v]=&$$__v;');
201	do_action ("ws_plugin__s2member_after_paypal_notify", get_defined_vars ());
202	unset ($__refs, $__v); /* Unset defined __refs, __v. */
203	}
204	}
205	}
206	?>