init.nofollow.php

1. 记录每个帖子的访问人情况

<?php
# $Id: init.nofollow.php 11331 2005-04-15 00:02:51Z bchoate $
# Released under the Artistic License
# SCRiPTMAFiA 2005 - THE DiRTY HANDS ON YOUR SCRiPTS

global $mt;
$ctx = &$mt->context();

# override handler for the following tags.  the overridden version
# will, in turn call the MT native handlers...
$ctx->register_function('MTCommentBody', 'mtcommentbody_nofollowfy');
$ctx->register_function('MTCommentAuthorLink', 'mtcommentauthorlink_nofollowfy');
$ctx->register_block('MTPings', 'mtpings_nofollowfy');

# disable MT-forced sanitization for these tags. we'll handle it ourselves...
unset($ctx->sanitized['MTCommentAuthorLink']);
unset($ctx->sanitized['MTCommentBody']);
$ctx->add_global_filter('nofollowfy', 'nofollowfy');

function nofollow_config(&$ctx) {
    $config = $ctx->stash('nofollow_config');
    if ($config)
        return $config;

    $rows = $ctx->mt->db->get_results("select plugindata_key, plugindata_data from mt_plugindata where plugindata_plugin='Nofollow' and plugindata_key like 'configuration/%'", ARRAY_A);
    $config = array();
    if ($rows) {
        foreach ($rows as $option) {
            $param = $option['plugindata_key'];
            $param = preg_replace('!^configuration/!', '', $param);
            $value = $option['plugindata_data'];
            $config[$param] = $value;
        }
    }

    isset($config['nofollow_enabled']) or $config['nofollow_enabled'] = 1;
    isset($config['follow_auth_links']) or $config['follow_auth_links'] = 0;
    $ctx->stash('nofollow_config', $config);

    return $config;
}

function sanitize_nofollowfy($str, $arg = 1) {
    if (!isset($arg)) $arg = '1';
    if ($arg) {
        require_once("modifier.sanitize.php");
        $str = smarty_modifier_sanitize($str, $arg);
    }
    return nofollowfy($str);
}

function nofollowfy($str, $arg = 1) {
    # manipulate hyperlinks in $str...
    if (!isset($str)) return $str;
    if (!$arg) return $str;
    return preg_replace_callback('#<a\s([^>]*\s*href\s*=[^>]*)>#i', 'nofollowfy_cb', $str);
}

function nofollowfy_cb($matches) {
    $str = $matches[1];
    preg_match_all('/[^=[:space:]]*\s*=\s*"[^"]*"|[^=[:space:]]*\s*=\s*\'[^\']*\'|[^=[:space:]]*\s*=[^[:space:]]*/', $str, $attr);
    $rel_arr = preg_grep('/^rel\s*=/i', $attr[0]);
    if (count($rel_arr) > 0)
        $rel = array_pop($rel_arr);
    if ($rel) {
        $rel = preg_replace('/^(rel\s*=\s*[\'"]?)/i', '\1nofollow ', $rel);
    } else {
        $rel = 'rel="nofollow"';
    }
    $attr = preg_grep('/^rel\s*=/i', $attr[0], PREG_GREP_INVERT);
    return '<a ' . join(' ', $attr) . ' ' . $rel . '>';
}

function mtcommentbody_nofollowfy($args, &$ctx) {
    require_once("function.MTCommentBody.php");
    $comment = $ctx->stash('comment');
    $body = smarty_function_MTCommentBody($args, $ctx);
    $config = nofollow_config($ctx);
    if (!$config['nofollow_enabled']) {
        require_once("modifier.sanitize.php");
        if (!isset($args['sanitize'])) $args['sanitize'] = '1';
        return smarty_modifier_sanitize($body, $args['sanitize']);
    }
    if ($comment['comment_commenter_id']) {
        // is an authenticated comment
        $auth = $ctx->mt->db->fetch_author($comment['comment_commenter_id']);
        if ($auth && $config['follow_auth_links'])
            return $body;
    }
    return sanitize_nofollowfy($body, $args['sanitize']);
}
function mtcommentauthorlink_nofollowfy($args, &$ctx) {
    require_once("function.MTCommentAuthorLink.php");
    if (!isset($args['no_redirect'])) $args['no_redirect'] = 1;
    $link = smarty_function_MTCommentAuthorLink($args, $ctx);
    $config = nofollow_config($ctx);
    if (!$config['nofollow_enabled']) {
        require_once("modifier.sanitize.php");
        if (!isset($args['sanitize'])) $args['sanitize'] = '1';
        return smarty_modifier_sanitize($link, $args['sanitize']);
    }
    $comment = $ctx->stash('comment');
    if ($comment['comment_commenter_id']) {
        // is an authenticated comment
        $auth = $ctx->mt->db->fetch_author($comment['comment_commenter_id']);
        if ($auth && $config['follow_auth_links'])
            return $link;
    }
    return sanitize_nofollowfy($link, $args['sanitize']);
}
function mtpings_nofollowfy($args, $content, &$ctx, &$repeat) {
    if (!isset($content)) require_once("block.MTPings.php");
    $out = smarty_block_MTPings($args, $content, $ctx, $repeat);
    $config = nofollow_config($ctx);
    if ($config['nofollow_enabled'])
        $out = nofollowfy($out);
    return $out;
}
?>