| 开发者 |
pfefferle
mrose17 |
|---|---|
| 更新时间 | 2016年11月3日 21:20 |
| 捐献地址: | 去捐款 |
| PHP版本: | 3.5.1 及以上 |
| WordPress版本: | 4.6.1 |
| 版权: | MPL2 |
It is increasingly common for Web-based protocols to require the discovery of policy or other information about a host ("site-wide metadata") before making a request. For example, the Robots Exclusion Protocol http://www.robotstxt.org/ specifies a way for automated processes to obtain permission to access resources; likewise, the Platform for Privacy Preferences tells user-agents how to discover privacy policy beforehand. While there are several ways to access per-resource metadata (e.g., HTTP headers, WebDAV's PROPFIND [RFC4918]), the perceived overhead (either in terms of client-perceived latency and/or deployment difficulties) associated with them often precludes their use in these scenarios. When this happens, it is common to designate a "well-known location" for such data, so that it can be easily located. However, this approach has the drawback of risking collisions, both with other such designated "well-known locations" and with pre-existing resources. To address this, this memo defines a path prefix in HTTP(S) URIs for these "well-known locations", "/.well-known/". Future specifications that need to define a resource for such site-wide metadata can register their use to avoid collisions and minimise impingement upon sites' URI space.You will need 'manage_options' capability in order to use the Settings page for this plugin.
well-known-folder to the /wp-content/plugins/ directoryPath: /.well-known/
robots.txt
Content-Type:
text/plain; charset=utf-8
URI contents:
User-agent: *
Allow: /
1. If you want to configure a Well-Known URI that returns dynamic output,
first, edit the plugin source to define a function invoked by
do_action for the action "well_known_uri_" + $path. That function
will be invoked when /.well-known/${path} is requested.Set a callback for an URI (e.g., "/.well-known/robots.txt"),
identified by "well_known_uri_" + $path (e.g., "well_known_uri_robots.txt").
add_action('well_known_uri_robots.txt', 'robots_txt');
In the callback, do whatever processing is appropriate, e.g.,
`function robots_txt($query) {
header('Content-Type: text/plain; charset=' . get_option('blog_charset'), TRUE);
echo "User-agent: *";
echo "Allow: /";
exit;
}`
This code defines a URI that returns static output, as shown in Step 3 above.
(For static output, you will want to use Settings > Well-Known URIs page to
avoid writing any code.)
Yes, you can find an example plugin, which defines a Well-Known URI, here: http://wordpress.org/extend/plugins/host-meta/