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