wp-email / uninstall.php

uninstall.php in WP-EMail trunk, at uninstall.php

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1	<?php
2	/**
3	* Uninstall WP-EMail.
4	*
5	* Runs with the plugin inactive, so nothing here may assume the plugin has
6	* booted. The three class files it needs are required explicitly and declare
7	* nothing but a class, which is also what keeps the table work -- and the
8	* query that finds the flood records, whose names are hashes -- inside
9	* includes/ where the rest of the plugin's schema lives.
10	*
11	* @package WP-EMail
12	*/
13
14	defined( 'WP_UNINSTALL_PLUGIN' ) \|\| exit;
15
16	require_once __DIR__ . '/includes/class-wp-email-admin.php';
17	require_once __DIR__ . '/includes/class-wp-email-logs.php';
18	require_once __DIR__ . '/includes/class-wp-email-form.php';
19
20	/**
21	* Delete the plugin's options for the current site.
22	*
23	* The list is longer than the plugin now writes: 3.0.0 folded eighteen rows
24	* into wp_email_options and wp_email_version, but an install that never reached
25	* the migration still has the originals, and uninstall has to clear those too.
26	*
27	* The two WP-Stats rows this plugin used to read -- stats_display and
28	* stats_mostlimit -- are deliberately absent. They were shared with six other
29	* plugins rather than owned, so removing WP-EMail must not clear a setting a
30	* sibling is still reading. The migration deletes them once it has folded them
31	* in; uninstall never touches them.
32	*
33	* @return void
34	*/
35	function wp_email_delete_options() {
36	$option_names = array(
37	'wp_email_options',
38	'wp_email_version',
39	'widget_email',
40	'widget_email_most_emailed',
41	// Pre-3.0.0 rows.
42	'email_options',
43	'email_db_version',
44	'email_contenttype',
45	'email_snippet',
46	'email_interval',
47	'email_multiple',
48	'email_imageverify',
49	'email_fields',
50	'email_template_title',
51	'email_template_subtitle',
52	'email_template_subject',
53	'email_template_body',
54	'email_template_bodyalt',
55	'email_template_sentsuccess',
56	'email_template_sentfailed',
57	'email_template_error',
58	'email_smtp',
59	'email_mailer',
60	);
61
62	foreach ( $option_names as $option_name ) {
63	delete_option( $option_name );
64	}
65
66	WP_Email_Form::delete_flood_records();
67	}
68
69
70	/**
71	* Take the plugin's capability back off every role that has it.
72	*
73	* @return void
74	*/
75	function wp_email_remove_capability() {
76	// One expression, asked and answered: the capability the screens check is
77	// the one granted and the one taken back. Testing the constant while
78	// removing the filtered value would walk straight past a site that filters
79	// wp_email_capability, leaving a capability nothing removes.
80	$capability = WP_Email_Admin::capability();
81
82	foreach ( wp_roles()->role_objects as $role ) {
83	if ( $role->has_cap( $capability ) ) {
84	$role->remove_cap( $capability );
85	}
86	}
87	}
88
89	if ( is_multisite() ) {
90	// 'number' => 0 lifts WP_Site_Query's default cap of 100, which would
91	// otherwise leave the options and the table behind on every site past the
92	// hundredth while still reporting a clean uninstall.
93	$wp_email_site_ids = get_sites(
94	array(
95	'fields' => 'ids',
96	'number' => 0,
97	)
98	);
99
100	foreach ( $wp_email_site_ids as $wp_email_site_id ) {
101	switch_to_blog( (int) $wp_email_site_id );
102
103	wp_email_delete_options();
104	WP_Email_Logs::drop_table();
105	wp_email_remove_capability();
106
107	// Inside the loop: switch_to_blog() pushes onto a stack, so restoring
108	// once after the loop leaves it unwound by exactly one.
109	restore_current_blog();
110	}
111	} else {
112	wp_email_delete_options();
113	WP_Email_Logs::drop_table();
114	wp_email_remove_capability();
115	}
116