root/tags/1.3/wp-admin/includes/post.php

<?php

// Update an existing post with values provided in $_POST.
function edit_post() {
    global $user_ID;

    $post_ID = (int) $_POST['post_ID'];

    if ( 'page' == $_POST['post_type'] ) {
        if ( !current_user_can( 'edit_page', $post_ID ) )
            wp_die( __('You are not allowed to edit this page.' ));
    } else {
        if ( !current_user_can( 'edit_post', $post_ID ) )
            wp_die( __('You are not allowed to edit this post.' ));
    }

    // Autosave shouldn't save too soon after a real save
    if ( 'autosave' == $_POST['action'] ) {
        $post =& get_post( $post_ID );
        $now = time();
        $then = strtotime($post->post_date_gmt . ' +0000');
        // Keep autosave_interval in sync with autosave-js.php.
        $delta = apply_filters( 'autosave_interval', 120 ) / 2;
        if ( ($now - $then) < $delta )
            return $post_ID;
    }

    // Rename.
    $_POST['ID'] = (int) $_POST['post_ID'];
    $_POST['post_content'] = $_POST['content'];
    $_POST['post_excerpt'] = $_POST['excerpt'];
    $_POST['post_parent'] = $_POST['parent_id'];
    $_POST['to_ping'] = $_POST['trackback_url'];

    if (!empty ( $_POST['post_author_override'] ) ) {
        $_POST['post_author'] = (int) $_POST['post_author_override'];
    } else
        if (!empty ( $_POST['post_author'] ) ) {
            $_POST['post_author'] = (int) $_POST['post_author'];
        } else {
            $_POST['post_author'] = (int) $_POST['user_ID'];
        }

    if ( $_POST['post_author'] != $_POST['user_ID'] ) {
        if ( 'page' == $_POST['post_type'] ) {
            if ( !current_user_can( 'edit_others_pages' ) )
                wp_die( __('You are not allowed to edit pages as this user.' ));
        } else {
            if ( !current_user_can( 'edit_others_posts' ) )
                wp_die( __('You are not allowed to edit posts as this user.' ));

        }
    }

    // What to do based on which button they pressed
    if ('' != $_POST['saveasdraft'] )
        $_POST['post_status'] = 'draft';
    if ('' != $_POST['saveasprivate'] )
        $_POST['post_status'] = 'private';
    if ('' != $_POST['publish'] )
        $_POST['post_status'] = 'publish';
    if ('' != $_POST['advanced'] )
        $_POST['post_status'] = 'draft';

    if ( 'page' == $_POST['post_type'] ) {
        if ('publish' == $_POST['post_status'] && !current_user_can( 'edit_published_pages' ))
            $_POST['post_status'] = 'pending';
    } else {
        if ('publish' == $_POST['post_status'] && !current_user_can( 'edit_published_posts' ))
            $_POST['post_status'] = 'pending';
    }

    if (!isset( $_POST['comment_status'] ))
        $_POST['comment_status'] = 'closed';

    if (!isset( $_POST['ping_status'] ))
        $_POST['ping_status'] = 'closed';

    if (!empty ( $_POST['edit_date'] ) ) {
        $aa = $_POST['aa'];
        $mm = $_POST['mm'];
        $jj = $_POST['jj'];
        $hh = $_POST['hh'];
        $mn = $_POST['mn'];
        $ss = $_POST['ss'];
        $jj = ($jj > 31 ) ? 31 : $jj;
        $hh = ($hh > 23 ) ? $hh -24 : $hh;
        $mn = ($mn > 59 ) ? $mn -60 : $mn;
        $ss = ($ss > 59 ) ? $ss -60 : $ss;
        $_POST['post_date'] = "$aa-$mm-$jj $hh:$mn:$ss";
        $_POST['post_date_gmt'] = get_gmt_from_date( "$aa-$mm-$jj $hh:$mn:$ss" );
    }

    // Meta Stuff
    if ( $_POST['meta'] ) {
        foreach ( $_POST['meta'] as $key => $value )
            update_meta( $key, $value['key'], $value['value'] );
    }

    if ( $_POST['deletemeta'] ) {
        foreach ( $_POST['deletemeta'] as $key => $value )
            delete_meta( $key );
    }

    add_meta( $post_ID );

    wp_update_post( $_POST );

    // Reunite any orphaned attachments with their parent
    if ( !$draft_ids = get_user_option( 'autosave_draft_ids' ) )
        $draft_ids = array();
    if ( $draft_temp_id = (int) array_search( $post_ID, $draft_ids ) )
        _relocate_children( $draft_temp_id, $post_ID );

    // Now that we have an ID we can fix any attachment anchor hrefs
    _fix_attachment_links( $post_ID );

    return $post_ID;
}

// Default post information to use when populating the "Write Post" form.
function get_default_post_to_edit() {
    if ( !empty( $_REQUEST['post_title'] ) )
        $post_title = wp_specialchars( stripslashes( $_REQUEST['post_title'] ));
    else if ( !empty( $_REQUEST['popuptitle'] ) ) {
        $post_title = wp_specialchars( stripslashes( $_REQUEST['popuptitle'] ));
        $post_title = funky_javascript_fix( $post_title );
    } else {
        $post_title = '';
    }

    if ( !empty( $_REQUEST['content'] ) )
        $post_content = wp_specialchars( stripslashes( $_REQUEST['content'] ));
    else if ( !empty( $post_title ) ) {
        $text       = wp_specialchars( stripslashes( urldecode( $_REQUEST['text'] ) ) );
        $text       = funky_javascript_fix( $text);
        $popupurl   = clean_url($_REQUEST['popupurl']);
        $post_content = '<a href="'.$popupurl.'">'.$post_title.'</a>'."\n$text";
    }

    if ( !empty( $_REQUEST['excerpt'] ) )
        $post_excerpt = wp_specialchars( stripslashes( $_REQUEST['excerpt'] ));
    else
        $post_excerpt = '';

    $post->post_status = 'draft';
    $post->comment_status = get_option( 'default_comment_status' );
    $post->ping_status = get_option( 'default_ping_status' );
    $post->post_pingback = get_option( 'default_pingback_flag' );
    $post->post_category = get_option( 'default_category' );
    $post->post_content = apply_filters( 'default_content', $post_content);
    $post->post_title = apply_filters( 'default_title', $post_title );
    $post->post_excerpt = apply_filters( 'default_excerpt', $post_excerpt);
    $post->page_template = 'default';
    $post->post_parent = 0;
    $post->menu_order = 0;

    return $post;
}

// Get an existing post and format it for editing.
function get_post_to_edit( $id ) {

    $post = get_post( $id, OBJECT, 'edit' );

    if ( $post->post_type == 'page' )
        $post->page_template = get_post_meta( $id, '_wp_page_template', true );

    return $post;
}

function post_exists($title, $content = '', $post_date = '') {
    global $wpdb;

    if (!empty ($post_date))
        $post_date = "AND post_date = '$post_date'";

    if (!empty ($title))
        return $wpdb->get_var("SELECT ID FROM $wpdb->posts WHERE post_title = '$title' $post_date");
    else
        if (!empty ($content))
            return $wpdb->get_var("SELECT ID FROM $wpdb->posts WHERE post_content = '$content' $post_date");

    return 0;
}

// Creates a new post from the "Write Post" form using $_POST information.
function wp_write_post() {
    global $user_ID;

    if ( 'page' == $_POST['post_type'] ) {
        if ( !current_user_can( 'edit_pages' ) )
            return new WP_Error( 'edit_pages', __( 'You are not allowed to create pages on this blog.' ) );
    } else {
        if ( !current_user_can( 'edit_posts' ) )
            return new WP_Error( 'edit_posts', __( 'You are not allowed to create posts or drafts on this blog.' ) );
    }


    // Check for autosave collisions
    $temp_id = false;
    if ( isset($_POST['temp_ID']) ) {
        $temp_id = (int) $_POST['temp_ID'];
        if ( !$draft_ids = get_user_option( 'autosave_draft_ids' ) )
            $draft_ids = array();
        foreach ( $draft_ids as $temp => $real )
            if ( time() + $temp > 86400 ) // 1 day: $temp is equal to -1 * time( then )
                unset($draft_ids[$temp]);

        if ( isset($draft_ids[$temp_id]) ) { // Edit, don't write
            $_POST['post_ID'] = $draft_ids[$temp_id];
            unset($_POST['temp_ID']);
            update_user_option( $user_ID, 'autosave_draft_ids', $draft_ids );
            return edit_post();
        }
    }

    // Rename.
    $_POST['post_content'] = $_POST['content'];
    $_POST['post_excerpt'] = $_POST['excerpt'];
    $_POST['post_parent'] = $_POST['parent_id'];
    $_POST['to_ping'] = $_POST['trackback_url'];

    if (!empty ( $_POST['post_author_override'] ) ) {
        $_POST['post_author'] = (int) $_POST['post_author_override'];
    } else {
        if (!empty ( $_POST['post_author'] ) ) {
            $_POST['post_author'] = (int) $_POST['post_author'];
        } else {
            $_POST['post_author'] = (int) $_POST['user_ID'];
        }

    }

    if ( $_POST['post_author'] != $_POST['user_ID'] ) {
        if ( 'page' == $_POST['post_type'] ) {
            if ( !current_user_can( 'edit_others_pages' ) )
                return new WP_Error( 'edit_others_pages', __( 'You are not allowed to create pages as this user.' ) );
        } else {
            if ( !current_user_can( 'edit_others_posts' ) )
                return new WP_Error( 'edit_others_posts', __( 'You are not allowed to post as this user.' ) );

        }
    }

    // What to do based on which button they pressed
    if ('' != $_POST['saveasdraft'] )
        $_POST['post_status'] = 'draft';
    if ('' != $_POST['saveasprivate'] )
        $_POST['post_status'] = 'private';
    if ('' != $_POST['publish'] )
        $_POST['post_status'] = 'publish';
    if ('' != $_POST['advanced'] )
        $_POST['post_status'] = 'draft';

    if ( 'page' == $_POST['post_type'] ) {
        if ('publish' == $_POST['post_status'] && !current_user_can( 'publish_pages' ) )
            $_POST['post_status'] = 'pending';
    } else {
        if ('publish' == $_POST['post_status'] && !current_user_can( 'publish_posts' ) )
            $_POST['post_status'] = 'pending';
    }

    if (!isset( $_POST['comment_status'] ))
        $_POST['comment_status'] = 'closed';

    if (!isset( $_POST['ping_status'] ))
        $_POST['ping_status'] = 'closed';

    if (!empty ( $_POST['edit_date'] ) ) {
        $aa = $_POST['aa'];
        $mm = $_POST['mm'];
        $jj = $_POST['jj'];
        $hh = $_POST['hh'];
        $mn = $_POST['mn'];
        $ss = $_POST['ss'];
        $jj = ($jj > 31 ) ? 31 : $jj;
        $hh = ($hh > 23 ) ? $hh -24 : $hh;
        $mn = ($mn > 59 ) ? $mn -60 : $mn;
        $ss = ($ss > 59 ) ? $ss -60 : $ss;
        $_POST['post_date'] = sprintf( "%04d-%02d-%02d %02d:%02d:%02d", $aa, $mm, $jj, $hh, $mn, $ss );
        $_POST['post_date_gmt'] = get_gmt_from_date( $_POST['post_date'] );
    }

    // Create the post.
    $post_ID = wp_insert_post( $_POST );
    if ( is_wp_error( $post_ID ) )
        return $post_ID;

    if ( empty($post_ID) )
        return 0;

    add_meta( $post_ID );

    // Reunite any orphaned attachments with their parent
    if ( !$draft_ids = get_user_option( 'autosave_draft_ids' ) )
        $draft_ids = array();
    if ( $draft_temp_id = (int) array_search( $post_ID, $draft_ids ) )
        _relocate_children( $draft_temp_id, $post_ID );
    if ( $temp_id && $temp_id != $draft_temp_id )
        _relocate_children( $temp_id, $post_ID );

    // Update autosave collision detection
    if ( $temp_id ) {
        $draft_ids[$temp_id] = $post_ID;
        update_user_option( $user_ID, 'autosave_draft_ids', $draft_ids );
    }

    // Now that we have an ID we can fix any attachment anchor hrefs
    _fix_attachment_links( $post_ID );

    return $post_ID;
}

function write_post() {
    $result = wp_write_post();
    if( is_wp_error( $result ) )
        wp_die( $result->get_error_message() );
    else
        return $result;
}

//
// Post Meta
//

function add_meta( $post_ID ) {
    global $wpdb;
    $post_ID = (int) $post_ID;

    $protected = array( '_wp_attached_file', '_wp_attachment_metadata', '_wp_old_slug', '_wp_page_template' );

    $metakeyselect = $wpdb->escape( stripslashes( trim( $_POST['metakeyselect'] ) ) );
    $metakeyinput = $wpdb->escape( stripslashes( trim( $_POST['metakeyinput'] ) ) );
    $metavalue = maybe_serialize( stripslashes( (trim( $_POST['metavalue'] ) ) ));
    $metavalue = $wpdb->escape( $metavalue );

    if ( ('0' === $metavalue || !empty ( $metavalue ) ) && ((('#NONE#' != $metakeyselect) && !empty ( $metakeyselect) ) || !empty ( $metakeyinput) ) ) {
        // We have a key/value pair. If both the select and the
        // input for the key have data, the input takes precedence:

         if ('#NONE#' != $metakeyselect)
            $metakey = $metakeyselect;

        if ( $metakeyinput)
            $metakey = $metakeyinput; // default

        if ( in_array($metakey, $protected) )
            return false;

        $result = $wpdb->query( "
                        INSERT INTO $wpdb->postmeta
                        (post_id,meta_key,meta_value )
                        VALUES ('$post_ID','$metakey','$metavalue' )
                    " );
        return $wpdb->insert_id;
    }
    return false;
} // add_meta

function delete_meta( $mid ) {
    global $wpdb;
    $mid = (int) $mid;

    return $wpdb->query( "DELETE FROM $wpdb->postmeta WHERE meta_id = '$mid'" );
}

// Get a list of previously defined keys
function get_meta_keys() {
    global $wpdb;

    $keys = $wpdb->get_col( "
            SELECT meta_key
            FROM $wpdb->postmeta
            GROUP BY meta_key
            ORDER BY meta_key" );

    return $keys;
}

function get_post_meta_by_id( $mid ) {
    global $wpdb;
    $mid = (int) $mid;

    $meta = $wpdb->get_row( "SELECT * FROM $wpdb->postmeta WHERE meta_id = '$mid'" );
    if ( is_serialized_string( $meta->meta_value ) )
        $meta->meta_value = maybe_unserialize( $meta->meta_value );
    return $meta;
}

// Some postmeta stuff
function has_meta( $postid ) {
    global $wpdb;

    return $wpdb->get_results( "
            SELECT meta_key, meta_value, meta_id, post_id
            FROM $wpdb->postmeta
            WHERE post_id = '$postid'
            ORDER BY meta_key,meta_id", ARRAY_A );

}

function update_meta( $mid, $mkey, $mvalue ) {
    global $wpdb;

    $protected = array( '_wp_attached_file', '_wp_attachment_metadata', '_wp_old_slug', '_wp_page_template' );

    if ( in_array($mkey, $protected) )
        return false;

    $mvalue = maybe_serialize( stripslashes( $mvalue ));
    $mvalue = $wpdb->escape( $mvalue );
    $mid = (int) $mid;
    return $wpdb->query( "UPDATE $wpdb->postmeta SET meta_key = '$mkey', meta_value = '$mvalue' WHERE meta_id = '$mid'" );
}

//
// Private
//

// Replace hrefs of attachment anchors with up-to-date permalinks.
function _fix_attachment_links( $post_ID ) {
    global $wp_rewrite;

    $post = & get_post( $post_ID, ARRAY_A );

    $search = "#<a[^>]+rel=('|\")[^'\"]*attachment[^>]*>#ie";

    // See if we have any rel="attachment" links
    if ( 0 == preg_match_all( $search, $post['post_content'], $anchor_matches, PREG_PATTERN_ORDER ) )
        return;

    $i = 0;
    $search = "#[\s]+rel=(\"|')(.*?)wp-att-(\d+)\\1#i";
    foreach ( $anchor_matches[0] as $anchor ) {
        if ( 0 == preg_match( $search, $anchor, $id_matches ) )
            continue;

        $id = (int) $id_matches[3];

        // While we have the attachment ID, let's adopt any orphans.
        $attachment = & get_post( $id, ARRAY_A );
        if ( ! empty( $attachment) && ! is_object( get_post( $attachment['post_parent'] ) ) ) {
            $attachment['post_parent'] = $post_ID;
            // Escape data pulled from DB.
            $attachment = add_magic_quotes( $attachment);
            wp_update_post( $attachment);
        }

        $post_search[$i] = $anchor;
        $post_replace[$i] = preg_replace( "#href=(\"|')[^'\"]*\\1#e", "stripslashes( 'href=\\1' ).get_attachment_link( $id ).stripslashes( '\\1' )", $anchor );
        ++$i;
    }

    $post['post_content'] = str_replace( $post_search, $post_replace, $post['post_content'] );

    // Escape data pulled from DB.
    $post = add_magic_quotes( $post);

    return wp_update_post( $post);
}

// Move child posts to a new parent
function _relocate_children( $old_ID, $new_ID ) {
    global $wpdb;
    $old_ID = (int) $old_ID;
    $new_ID = (int) $new_ID;
    return $wpdb->query( "UPDATE $wpdb->posts SET post_parent = $new_ID WHERE post_parent = $old_ID" );
}

?>