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This page explains how to discourage "link spamming" on your wiki site using PmWiki's urlapprove.php script. This script is already included in PmWiki files, but not activated by default.
Occasionally spammers may try to add large number of (sometimes hidden) URLs to pages because they think it will improve their search engine rankings -- which it probably won't. The urlapprove.php script works against these spammers' purpose by
To enable urlapprove.php, add the following line to a configuration file:
By default, unapproved links display what ever should be displayed normally (the URL or a text), but not linked and next to it a link (approve links). A click on the link will approve all unapproved URLs on the page, but only if you are authorized to edit the SiteAdmin.ApprovedUrls? page. You may also pre-approve sites by by adding them directly to the SiteAdmin.ApprovedUrls? page.
Limiting unapproved urls per page
You can limit the number of unapproved links per page. If the limit is exceeded, the page cannot be saved. This is useful because spammers like to write long link lists, which is rare for normal authors.
Example: To set the limit to 5 unapproved links, add the following line to a configuration file:
Note that $UnapprovedLinkCountMax must be set before including the urlapprove.php script.
Handling of Unapproved Links
You can also change the disapproval message defined in the $UnapprovedLinkFmt variable, for example:
include_once('scripts/urlapprove.php'); $UnapprovedLinkFmt = "[$[Link requires approval]]<a class='apprlink' href='\$PageUrl?action=approvesites'>$[(approve)]</a>";
"Link requires approval" is whatever you want to see in place of the unapproved link and "(approve)" is the blue text. Using this feature may prove usefull if you want to always hide the unapproved link.
If you wish to totally forbid unapproved links you can use
Please note that in general you need to go to the sidebar, header, footer pages in order to approve links in them. If pages or sections with unapproved links are included in other pages, or transcluded via a pagelist or a page text variable, you need to approve the links in the original pages. The reason for this is that the approve mechanism only approves links on the current page.
After initial setup all existing links become unapproved. You need to visit your pages and approve all links, where needed. See AllRecentChanges? for a list of all pages that were created on your wiki.
Urls can also be approved by adding them to a "white list",
defined in the variable
$WhiteUrlPatterns = "(http://example.com|http://example.net|http://example.org)";
To add all urls from, say New Zealand and Australia, use:
$WhiteUrlPatterns = 'http://[^/]+\\.nz'; $WhiteUrlPatterns = 'http://[^/]+\\.au';
Previewing the unapproved URL
To see what link is to be approved without editing the page a tool tip can be displayed when the cursor hovers over the (approve links) link that displays the URL. e.g. Example.
Add the following setting in your local/config.php:
$UnapprovedLinkFmt = "\$LinkText<a class='apprlink' href='\$PageUrl?action=approvesites' title='\$LinkUrl'>$[(approve links)]</a>";
Some browsers show only the link and not the tooltip title. In this case, you can use the following code to see the unapproved link at the end of the tooltip :
$UnapprovedLinkFmt = "\$LinkText<a class='apprlink' href='\$PageUrl?action=approvesites&XES_url=\$LinkUrl' title='\$LinkUrl'>$[(approve sites)]</a>";
By default, PmWiki creates external links that are not followed by search engines. Here are release notes from pmwiki-2.0.beta20 (30-Jan-2005):
Page last modified on September 04, 2017, at 08:24 AM
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