mikeselander /
dummybot
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| 1 | <?php |
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| 2 | namespace DummyPress; |
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| 3 | |||
| 4 | /** |
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| 5 | * ConnectionTest |
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| 6 | * |
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| 7 | * A more intelligent check to see if we can connect to Splashbase or not. |
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| 8 | * |
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| 9 | * This class checks whether or not we can connect to the Internet, and |
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| 10 | * if we can, whether we can connect to Splashbase itself. This is used by |
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| 11 | * our admin notice function to check whether or not we should display a notice |
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| 12 | * to users warning them of issues with Splashbase. |
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| 13 | * |
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| 14 | * The purpose of this is to avoid useless bug-hunting when images don't work. |
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| 15 | * |
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| 16 | * @package WordPress |
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| 17 | * @subpackage Evans |
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| 18 | * @author Mike Selander |
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| 19 | */ |
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| 20 | class ConnectionTest { |
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| 21 | |||
| 22 | /** |
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| 23 | * Run all of our connection tests. |
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| 24 | * |
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| 25 | * @see check_admin_page, check_airplane_mode, check_internet, check_splashbase |
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| 26 | * |
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| 27 | * @return boolean Status of connection to Internet/Splashbase. |
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| 28 | */ |
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| 29 | public function test() { |
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| 30 | |||
| 31 | /* |
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| 32 | * Make sure that we're looking at the correct admin page |
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| 33 | */ |
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| 34 | if ( ! $this->check_admin_page() ) { |
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| 35 | return; |
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| 36 | } |
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| 37 | |||
| 38 | /* |
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| 39 | * Test #1 - Check for Airplane Mode plugin status |
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| 40 | */ |
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| 41 | if ( ! $this->check_airplane_mode() ) { |
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| 42 | return false; |
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| 43 | } |
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| 44 | |||
| 45 | /* |
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| 46 | * Test #2 - Check Internet connection in general |
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| 47 | */ |
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| 48 | if ( ! $this->check_internet() ) { |
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| 49 | return false; |
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| 50 | } |
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| 51 | |||
| 52 | /* |
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| 53 | * Test #3 - Check External URL itself (Splashbase here) |
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| 54 | */ |
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| 55 | if ( ! $this->check_external_url( 'http://www.splashbase.co/api/v1/images/' ) ) { |
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| 56 | return false; |
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| 57 | } |
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| 58 | |||
| 59 | // We've made it this far, looks like everything checks out OK! |
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| 60 | return true; |
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| 61 | |||
| 62 | } |
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| 63 | |||
| 64 | |||
| 65 | /** |
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| 66 | * Check to make sure that we're only running this check in the correct place. |
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| 67 | * |
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| 68 | * We only want these (relatively)expensive checks to run on a single admin |
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| 69 | * page, so we need to run some checks first and verify that we're on the |
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| 70 | * right screen. |
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| 71 | * |
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| 72 | * @access private |
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| 73 | * |
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| 74 | * @global object $current_screen Current admin screen info. |
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| 75 | * |
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| 76 | * @return boolean Whether or not we're in the right place. |
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| 77 | */ |
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| 78 | private function check_admin_page() { |
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0 ignored issues
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| 79 | global $current_screen; |
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| 80 | |||
| 81 | // Only run if we're in the admin page |
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| 82 | if ( ! is_admin() ) { |
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| 83 | return false; |
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| 84 | } |
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| 85 | |||
| 86 | // Get the current admin screen & verify that we're on the right one |
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| 87 | // before continuing. |
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| 88 | if ( isset ( $current_screen ) && 'tools_page_create-test-data' != $current_screen->base ) { |
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| 89 | return false; |
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| 90 | } |
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| 91 | |||
| 92 | $last_uri_bit = explode( '=', $_SERVER['REQUEST_URI'] ); |
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| 93 | if ( 'create-test-data' != end( $last_uri_bit ) ) { |
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| 94 | return false; |
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| 95 | } |
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| 96 | |||
| 97 | return true; |
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| 98 | |||
| 99 | } |
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| 100 | |||
| 101 | |||
| 102 | /** |
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| 103 | * Check if we have Airplane Mode and if it's turned on or not. |
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| 104 | * |
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| 105 | * @access private |
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| 106 | * |
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| 107 | * @see get_site_option |
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| 108 | * |
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| 109 | * @return boolean Connected or not. |
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| 110 | */ |
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| 111 | private function check_airplane_mode() { |
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| 112 | |||
| 113 | if ( class_exists( 'Airplane_Mode_Core' ) ) { |
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| 114 | // Is airplane mode active? |
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| 115 | $airplane_mode = get_site_option( 'airplane-mode' ); |
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| 116 | |||
| 117 | if ( $airplane_mode === 'on' ) { |
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| 118 | return false; |
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| 119 | } |
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| 120 | } |
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| 121 | |||
| 122 | return true; |
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| 123 | |||
| 124 | } |
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| 125 | |||
| 126 | |||
| 127 | /** |
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| 128 | * Attempt to open a socket to a popular, compact to check overall connectivity. |
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| 129 | * |
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| 130 | * @access private |
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| 131 | * |
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| 132 | * @see fsockopen, fsockclose |
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| 133 | * |
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| 134 | * @return boolean Connected or not. |
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| 135 | */ |
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| 136 | private function check_internet() { |
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| 137 | |||
| 138 | // Attempt to open a socket connection to Google |
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| 139 | $connected = @fsockopen( "www.google.com", 80 ); |
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| 140 | |||
| 141 | if ( ! $connected ) { |
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| 142 | return false; |
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| 143 | } |
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| 144 | |||
| 145 | // Close out our 1st test |
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| 146 | fclose( $connected ); |
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| 147 | |||
| 148 | return true; |
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| 149 | |||
| 150 | } |
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| 151 | |||
| 152 | |||
| 153 | /** |
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| 154 | * Check an external API to see if it's reachable or not. |
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| 155 | * |
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| 156 | * @access private |
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| 157 | * |
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| 158 | * @see wp_remote_get |
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| 159 | * |
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| 160 | * @param string $url External URL to attempt to reach. |
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| 161 | * @return boolean Connected or not. |
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| 162 | */ |
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| 163 | private function check_external_url( $url ) { |
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| 164 | |||
| 165 | $test_url = esc_url( $url ); |
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| 166 | $response = wp_remote_get( $test_url ); |
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| 167 | |||
| 168 | if ( ! is_array( $response ) ) { |
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| 169 | return false; |
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| 170 | } |
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| 171 | |||
| 172 | return true; |
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| 173 | |||
| 174 | } |
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| 175 | |||
| 176 | } |
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| 177 |
Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: