103 lines
3.2 KiB
Markdown
103 lines
3.2 KiB
Markdown
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# Introduction
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Passport 1.4, or "Tweener", as it's sometimes called,
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is an HTTP-based authentication system that was introduced with [MSNP8](../versions/msnp8.md).
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For [MSNP12](../versions/msnp12.md) and above, read Passport 3.0.
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# Nexus
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The Passport Nexus is a server that provides information to other parties about how to use Passport.
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It's default domain is `nexus.passport.com`.
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## pprdr.asp
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The Passport Redirection service returns the `PassportURLs` header, which contains the `DALogin` parameter
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that is used to specify which server to attempt Passport 1.4 authentication with.
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### Client/Request
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```
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GET /rdr/pprdr.asp HTTP/1.1
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Host: nexus.passport.com
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```
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### Server/Response
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```
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HTTP/1.1 200 OK
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Cache-Control: private
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Content-Type: text/html
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Content-Length: 0
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PassportURLs: DARealm=Passport.Net,DALogin=login.passport.com/login2.srf,ConfigVersion=15
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```
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Where `PassportURLs` (case-sensitive) contains the following parameters:
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* `DARealm`: The Domain Authority's realm name.
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* `DALogin`: The Domain Authority's login endpoint.
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* `ConfigVersion`: Increases by 1 every time that PassportURLs is updated to flush the URL cache.
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# Passport Login
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The Passport Login server is a HTTPS server that provides the login service (default is `login2.srf`)
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specified in `DALogin` from the [Nexus](#nexus) response.
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## login2.srf
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The `login2.srf` endpoint is used for programmatic authentication.
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### Client/Request
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```
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GET /login2.srf HTTP/1.1
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Authorization: Passport1.4 Passport1.4 OrgVerb=GET,OrgURL=http%3A%2F%2Fmessenger%2Emsn%2Ecom,sign-in={user-handle},pwd={password},{server-args}
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User-Agent: MSMSGS
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Host: login.passport.com
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Connection: Keep-Alive
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Cache-Control: no-cache
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```
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Where `user-handle` is the URL-encoded user handle of the user to authenticate.
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Where `password` is the URL-encoded password of the user to authenticate.
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Where `server-args` is the parameter given to the server's response to the Initial [USR](../commands/usr.md).
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### Server/Response
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#### Authentication Redirection
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If the server you are authenticating to does not support your account type,
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but knows a server that does, this is used, otherwise [Authentication Successful](#authentication-successful) is.
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If you are redirected, you have to send the `Authorization` header again to the new server specified in `Location`.
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```
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HTTP/1.1 302 Found
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Cache-Control: no-cache
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cachecontrol: no-store
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Connection: close
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Authentication-Info: Passport1.4 da-status=redir
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Location: https://loginnet.passport.com/login2.srf?lc=1033
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```
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#### Authentication Successful
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```
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HTTP/1.1 200 OK
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Cache-Control: no-cache
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cachecontrol: no-store
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Connection: close
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Content-Type: text/html
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Authentication-Info: Passport1.4 dastatus=success,from-PP='t=token&p=profile',ru=http://messenger.msn.com
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Content-Length: 0
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```
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#### Authentication Failure
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The `dastatus` may instead be `failed-noretry`.
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```
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HTTP/1.1 Unauthorized
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Cache-Control: no-cache
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cachecontrol: no-store
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WWW-Authenticate Passport1.4 dastatus=failed,srealm=Passport.NET,ts=-1,prompt,cburl=http://www.passportimages.com/XPPassportLogo.gif
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Content-Length: 154
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<HTML><HEAD><META HTTP-EQUIV="REFRESH" CONTENT="0; URL=https://login.passport.com/pp25/login2.srf?f=11"><script>function OnBack(){}</script></HEAD></HTML>
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```
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