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annotate mod_auth_http_cookie/README.markdown @ 5461:06640647d193

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mod_http_oauth2: Fix use of arbitrary ports in loopback redirect URIs Per draft-ietf-oauth-v2-1-08#section-8.4.2 > The authorization server MUST allow any port to be specified at the > time of the request for loopback IP redirect URIs, to accommodate > clients that obtain an available ephemeral port from the operating > system at the time of the request. Uncertain if it should normalize the host part, but it also seems harmless to treat IPv6 and IPv4 the same here. One thing is that "localhost" is NOT RECOMMENDED because it can sometimes be pointed to non-loopback interfaces via DNS or hosts file.
author Kim Alvefur <zash@zash.se>
date Wed, 17 May 2023 13:51:30 +0200
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1 ---
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2 labels:
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3 - Stage-Alpha
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4 ...
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5
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6 Introduction
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7 ============
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8
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9 This is an experimental authentication module that does an asynchronous
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10 HTTP call to verify username and password.
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12 This is a (possibly temporary) fork of mod_http_auth_async that adds
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13 support for authentication using a cookie and SASL EXTERNAL.
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15 Details
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16 =======
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18 When a user attempts to authenticate to Prosody, this module takes the
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19 username and password and does a HTTP GET request with [Basic
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20 authentication][rfc7617] to the configured `http_auth_url`.
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22 Configuration
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23 =============
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24
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25 ``` lua
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26 VirtualHost "example.com"
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27 authentication = "http_auth_cookie"
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28 http_auth_url = "http://example.com/auth"
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29 http_cookie_auth_url = "https://example.com/testcookie.php?user=$user"
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30 ```
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31
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32 Cookie Authentication
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33 =====================
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35 It is possible to link authentication to an existing web application. This
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36 has the benefit that the user logging into the web application in their
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37 browser will automatically log them into their XMPP account.
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38
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39 There are some prerequisites for this to work:
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41 - The BOSH or Websocket requests must include the application's cookie in
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42 the headers sent to Prosody. This typically means the web chat code needs
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43 to be served from the same domain as the web application.
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45 - The web application must have a URL that returns 200 OK when called with
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46 a valid cookie, and returns a different status code if the cookie is invalid
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47 or not currently logged in.
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49 - The XMPP username for the user must be passed to Prosody by the client, or
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50 returned in the 200 response from the web application.
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52 Set `http_cookie_auth_url` to the web application URL that is used to check the
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53 cookie. You may use the variables `$host` for the XMPP host and `$user` for the
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54 XMPP username.
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56 If the `$user` variable is included in the URL, the client must provide the username
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57 via the "authzid" in the SASL EXTERNAL authentication mechanism.
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59 If the `$user` variable is *not* included in the URL, Prosody expects the web application's response to be the username instead, as UTF-8 text/plain.
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60
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61 Compatibility
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62 =============
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63
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64 Requires Prosody trunk