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   1  <?php
   2  /**
   3   * WP_Importer base class
   4   */
   5  class WP_Importer {
   6      /**
   7       * Class Constructor
   8       */
   9  	public function __construct() {}
  10  
  11      /**
  12       * Returns array with imported permalinks from WordPress database
  13       *
  14       * @global wpdb $wpdb WordPress database abstraction object.
  15       *
  16       * @param string $importer_name
  17       * @param string $bid
  18       * @return array
  19       */
  20  	public function get_imported_posts( $importer_name, $bid ) {
  21          global $wpdb;
  22  
  23          $hashtable = array();
  24  
  25          $limit  = 100;
  26          $offset = 0;
  27  
  28          // Grab all posts in chunks.
  29          do {
  30              $meta_key = $importer_name . '_' . $bid . '_permalink';
  31              $sql      = $wpdb->prepare( "SELECT post_id, meta_value FROM $wpdb->postmeta WHERE meta_key = %s LIMIT %d,%d", $meta_key, $offset, $limit );
  32              $results  = $wpdb->get_results( $sql );
  33  
  34              // Increment offset.
  35              $offset = ( $limit + $offset );
  36  
  37              if ( ! empty( $results ) ) {
  38                  foreach ( $results as $r ) {
  39                      // Set permalinks into array.
  40                      $hashtable[ $r->meta_value ] = (int) $r->post_id;
  41                  }
  42              }
  43          } while ( count( $results ) == $limit );
  44  
  45          // Unset to save memory.
  46          unset( $results, $r );
  47  
  48          return $hashtable;
  49      }
  50  
  51      /**
  52       * Return count of imported permalinks from WordPress database
  53       *
  54       * @global wpdb $wpdb WordPress database abstraction object.
  55       *
  56       * @param string $importer_name
  57       * @param string $bid
  58       * @return int
  59       */
  60  	public function count_imported_posts( $importer_name, $bid ) {
  61          global $wpdb;
  62  
  63          $count = 0;
  64  
  65          // Get count of permalinks.
  66          $meta_key = $importer_name . '_' . $bid . '_permalink';
  67          $sql      = $wpdb->prepare( "SELECT COUNT( post_id ) AS cnt FROM $wpdb->postmeta WHERE meta_key = %s", $meta_key );
  68  
  69          $result = $wpdb->get_results( $sql );
  70  
  71          if ( ! empty( $result ) ) {
  72              $count = (int) $result[0]->cnt;
  73          }
  74  
  75          // Unset to save memory.
  76          unset( $results );
  77  
  78          return $count;
  79      }
  80  
  81      /**
  82       * Set array with imported comments from WordPress database
  83       *
  84       * @global wpdb $wpdb WordPress database abstraction object.
  85       *
  86       * @param string $bid
  87       * @return array
  88       */
  89  	public function get_imported_comments( $bid ) {
  90          global $wpdb;
  91  
  92          $hashtable = array();
  93  
  94          $limit  = 100;
  95          $offset = 0;
  96  
  97          // Grab all comments in chunks.
  98          do {
  99              $sql     = $wpdb->prepare( "SELECT comment_ID, comment_agent FROM $wpdb->comments LIMIT %d,%d", $offset, $limit );
 100              $results = $wpdb->get_results( $sql );
 101  
 102              // Increment offset.
 103              $offset = ( $limit + $offset );
 104  
 105              if ( ! empty( $results ) ) {
 106                  foreach ( $results as $r ) {
 107                      // Explode comment_agent key.
 108                      list ( $ca_bid, $source_comment_id ) = explode( '-', $r->comment_agent );
 109                      $source_comment_id                   = (int) $source_comment_id;
 110  
 111                      // Check if this comment came from this blog.
 112                      if ( $bid == $ca_bid ) {
 113                          $hashtable[ $source_comment_id ] = (int) $r->comment_ID;
 114                      }
 115                  }
 116              }
 117          } while ( count( $results ) == $limit );
 118  
 119          // Unset to save memory.
 120          unset( $results, $r );
 121  
 122          return $hashtable;
 123      }
 124  
 125      /**
 126       * @param int $blog_id
 127       * @return int|void
 128       */
 129  	public function set_blog( $blog_id ) {
 130          if ( is_numeric( $blog_id ) ) {
 131              $blog_id = (int) $blog_id;
 132          } else {
 133              $blog   = 'http://' . preg_replace( '#^https?://#', '', $blog_id );
 134              $parsed = parse_url( $blog );
 135              if ( ! $parsed || empty( $parsed['host'] ) ) {
 136                  fwrite( STDERR, "Error: can not determine blog_id from $blog_id\n" );
 137                  exit;
 138              }
 139              if ( empty( $parsed['path'] ) ) {
 140                  $parsed['path'] = '/';
 141              }
 142              $blogs = get_sites(
 143                  array(
 144                      'domain' => $parsed['host'],
 145                      'number' => 1,
 146                      'path'   => $parsed['path'],
 147                  )
 148              );
 149              if ( ! $blogs ) {
 150                  fwrite( STDERR, "Error: Could not find blog\n" );
 151                  exit;
 152              }
 153              $blog    = array_shift( $blogs );
 154              $blog_id = (int) $blog->blog_id;
 155          }
 156  
 157          if ( function_exists( 'is_multisite' ) ) {
 158              if ( is_multisite() ) {
 159                  switch_to_blog( $blog_id );
 160              }
 161          }
 162  
 163          return $blog_id;
 164      }
 165  
 166      /**
 167       * @param int $user_id
 168       * @return int|void
 169       */
 170  	public function set_user( $user_id ) {
 171          if ( is_numeric( $user_id ) ) {
 172              $user_id = (int) $user_id;
 173          } else {
 174              $user_id = (int) username_exists( $user_id );
 175          }
 176  
 177          if ( ! $user_id || ! wp_set_current_user( $user_id ) ) {
 178              fwrite( STDERR, "Error: can not find user\n" );
 179              exit;
 180          }
 181  
 182          return $user_id;
 183      }
 184  
 185      /**
 186       * Sort by strlen, longest string first
 187       *
 188       * @param string $a
 189       * @param string $b
 190       * @return int
 191       */
 192  	public function cmpr_strlen( $a, $b ) {
 193          return strlen( $b ) - strlen( $a );
 194      }
 195  
 196      /**
 197       * GET URL
 198       *
 199       * @param string $url
 200       * @param string $username
 201       * @param string $password
 202       * @param bool   $head
 203       * @return array
 204       */
 205  	public function get_page( $url, $username = '', $password = '', $head = false ) {
 206          // Increase the timeout.
 207          add_filter( 'http_request_timeout', array( $this, 'bump_request_timeout' ) );
 208  
 209          $headers = array();
 210          $args    = array();
 211          if ( true === $head ) {
 212              $args['method'] = 'HEAD';
 213          }
 214          if ( ! empty( $username ) && ! empty( $password ) ) {
 215              $headers['Authorization'] = 'Basic ' . base64_encode( "$username:$password" );
 216          }
 217  
 218          $args['headers'] = $headers;
 219  
 220          return wp_safe_remote_request( $url, $args );
 221      }
 222  
 223      /**
 224       * Bump up the request timeout for http requests
 225       *
 226       * @param int $val
 227       * @return int
 228       */
 229  	public function bump_request_timeout( $val ) {
 230          return 60;
 231      }
 232  
 233      /**
 234       * Check if user has exceeded disk quota
 235       *
 236       * @return bool
 237       */
 238  	public function is_user_over_quota() {
 239          if ( function_exists( 'upload_is_user_over_quota' ) ) {
 240              if ( upload_is_user_over_quota() ) {
 241                  return true;
 242              }
 243          }
 244  
 245          return false;
 246      }
 247  
 248      /**
 249       * Replace newlines, tabs, and multiple spaces with a single space
 250       *
 251       * @param string $string
 252       * @return string
 253       */
 254  	public function min_whitespace( $string ) {
 255          return preg_replace( '|[\r\n\t ]+|', ' ', $string );
 256      }
 257  
 258      /**
 259       * Resets global variables that grow out of control during imports.
 260       *
 261       * @since 3.0.0
 262       *
 263       * @global wpdb  $wpdb       WordPress database abstraction object.
 264       * @global int[] $wp_actions
 265       */
 266  	public function stop_the_insanity() {
 267          global $wpdb, $wp_actions;
 268          // Or define( 'WP_IMPORTING', true );
 269          $wpdb->queries = array();
 270          // Reset $wp_actions to keep it from growing out of control.
 271          $wp_actions = array();
 272      }
 273  }
 274  
 275  /**
 276   * Returns value of command line params.
 277   * Exits when a required param is not set.
 278   *
 279   * @param string $param
 280   * @param bool   $required
 281   * @return mixed
 282   */
 283  function get_cli_args( $param, $required = false ) {
 284      $args = $_SERVER['argv'];
 285      if ( ! is_array( $args ) ) {
 286          $args = array();
 287      }
 288  
 289      $out = array();
 290  
 291      $last_arg = null;
 292      $return   = null;
 293  
 294      $il = count( $args );
 295  
 296      for ( $i = 1, $il; $i < $il; $i++ ) {
 297          if ( (bool) preg_match( '/^--(.+)/', $args[ $i ], $match ) ) {
 298              $parts = explode( '=', $match[1] );
 299              $key   = preg_replace( '/[^a-z0-9]+/', '', $parts[0] );
 300  
 301              if ( isset( $parts[1] ) ) {
 302                  $out[ $key ] = $parts[1];
 303              } else {
 304                  $out[ $key ] = true;
 305              }
 306  
 307              $last_arg = $key;
 308          } elseif ( (bool) preg_match( '/^-([a-zA-Z0-9]+)/', $args[ $i ], $match ) ) {
 309              for ( $j = 0, $jl = strlen( $match[1] ); $j < $jl; $j++ ) {
 310                  $key         = $match[1][ $j ];
 311                  $out[ $key ] = true;
 312              }
 313  
 314              $last_arg = $key;
 315          } elseif ( null !== $last_arg ) {
 316              $out[ $last_arg ] = $args[ $i ];
 317          }
 318      }
 319  
 320      // Check array for specified param.
 321      if ( isset( $out[ $param ] ) ) {
 322          // Set return value.
 323          $return = $out[ $param ];
 324      }
 325  
 326      // Check for missing required param.
 327      if ( ! isset( $out[ $param ] ) && $required ) {
 328          // Display message and exit.
 329          echo "\"$param\" parameter is required but was not specified\n";
 330          exit;
 331      }
 332  
 333      return $return;
 334  }