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| <h1 class="page">Distributed James Server — jmap.properties</h1> |
| <div id="preamble"> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p><a href="https://jmap.io/">JMAP</a> is intended to be a new standard for email clients to connect to mail |
| stores. It therefore intends to primarily replace IMAP + SMTP submission. It is also designed to be more |
| generic. It does not replace MTA-to-MTA SMTP transmission.</p> |
| </div> |
| <div class="paragraph"> |
| <p>Consult this <a href="https://github.com/apache/james-project/blob/master/dockerfiles/run/guice/cassandra-rabbitmq/destination/conf/jmap.properties">example</a> |
| to get some examples and hints.</p> |
| </div> |
| <table class="tableblock frame-all grid-all stretch"> |
| <caption class="title">Table 1. jmap.properties content</caption> |
| <colgroup> |
| <col style="width: 50%;"> |
| <col style="width: 50%;"> |
| </colgroup> |
| <thead> |
| <tr> |
| <th class="tableblock halign-left valign-top">Property name</th> |
| <th class="tableblock halign-left valign-top">explanation</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">enabled</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">true/false. Governs whether JMAP should be enabled</p></td> |
| </tr> |
| <tr> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">jmap.port</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">Optional. Defaults to 80. The port this server will be listening on. This value must be a valid |
| port, ranging between 1 and 65535 (inclusive)</p></td> |
| </tr> |
| <tr> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">tls.keystoreURL</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">Keystore to be used for generating authentication tokens for password authentication mechanism. |
| This should not be the same keystore than the ones used by TLS based protocols.</p></td> |
| </tr> |
| <tr> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">tls.secret</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">Password used to read the keystore</p></td> |
| </tr> |
| <tr> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">jwt.publickeypem.url</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">Optional. JWT tokens allow request to bypass authentication</p></td> |
| </tr> |
| <tr> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">url.prefix</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">Optional. Configuration urlPrefix for JMAP routes.</p></td> |
| </tr> |
| <tr> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">Default value: <a href="http://localhost" class="bare">http://localhost</a>.</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">upload.max.size</p></td> |
| </tr> |
| <tr> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">Optional. Configuration max size Upload in new JMAP-RFC-8621.</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">Default value: 30M. Supported units are B (bytes) K (KB) M (MB) G (GB).</p></td> |
| </tr> |
| <tr> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">view.email.query.enabled</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">Optional boolean. Defaults to false.</p></td> |
| </tr> |
| <tr> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">Should simple Email/query be resolved against a Cassandra projection, or should we resolve them against ElasticSearch? |
| This enables a higher resilience, but the projection needs to be correctly populated.</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">jmap.version.default</p></td> |
| </tr> |
| <tr> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">Optional string. Defaults to draft. Allowed values: draft, rfc-8621.</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">Which version of the JMAP protocol should be served when none supplied in the Accept header. |
| Defaults to draft for legacy reasons (avoid breaking changes) but setting the value to |
| rfc-8621 allow compatibility with other third party apps.</p></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_wire_tapping"><a class="anchor" href="#_wire_tapping"></a>Wire tapping</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>Enabling <strong>TRACE</strong> on <code>org.apache.james.jmap.wire</code> enables reactor-netty wiretap, logging of |
| all incoming and outgoing requests, outgoing requests. This will log also potentially sensible information |
| like authentication credentials.</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_generating_a_jwt_key_pair"><a class="anchor" href="#_generating_a_jwt_key_pair"></a>Generating a JWT key pair</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>The Distributed server enforces the use of RSA-SHA-256.</p> |
| </div> |
| <div class="paragraph"> |
| <p>One can use OpenSSL to generate a JWT key pair :</p> |
| </div> |
| <div class="literalblock"> |
| <div class="content"> |
| <pre># private key |
| openssl genrsa -out rs256-4096-private.rsa 4096 |
| # public key |
| openssl rsa -in rs256-4096-private.rsa -pubout > rs256-4096-public.pem</pre> |
| </div> |
| </div> |
| <div class="paragraph"> |
| <p>The private key can be used to generate JWT tokens, for instance |
| using <a href="https://github.com/vandium-io/jwtgen">jwtgen</a>:</p> |
| </div> |
| <div class="literalblock"> |
| <div class="content"> |
| <pre>jwtgen -a RS256 -p rs256-4096-private.rsa 4096 -c "sub=bob@domain.tld" -e 3600 -V</pre> |
| </div> |
| </div> |
| <div class="paragraph"> |
| <p>This token can then be passed as <code>Bearer</code> of the <code>Authorization</code> header :</p> |
| </div> |
| <div class="literalblock"> |
| <div class="content"> |
| <pre>curl -H "Authorization: Bearer $token" -XPOST http://127.0.0.1:80/jmap -d '...'</pre> |
| </div> |
| </div> |
| <div class="paragraph"> |
| <p>The public key can be referenced as <code>jwt.publickeypem.url</code> of the <code>jmap.properties</code> configuration file.</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_annotated_specification"><a class="anchor" href="#_annotated_specification"></a>Annotated specification</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>The [annotated documentation](<a href="https://github.com/apache/james-project/tree/master/server/protocols/jmap-rfc-8621/doc/specs/spec" class="bare">https://github.com/apache/james-project/tree/master/server/protocols/jmap-rfc-8621/doc/specs/spec</a>) |
| presents the limits of the JMAP RFC-8621 implementation part of the Apache James project. We furthermore implement |
| [JSON Meta Application Protocol (JMAP) Subprotocol for WebSocket](<a href="https://tools.ietf.org/html/rfc8887" class="bare">https://tools.ietf.org/html/rfc8887</a>).</p> |
| </div> |
| <div class="paragraph"> |
| <p>Some methods / types are not yet implemented, some implementations are naive, and the PUSH is not supported yet.</p> |
| </div> |
| <div class="paragraph"> |
| <p>Users are invited to read these limitations before using actively the JMAP RFC-8621 implementation, and should ensure their |
| client applications only uses supported operations.</p> |
| </div> |
| <div class="paragraph"> |
| <p>Contributions enhancing support are furthermore welcomed.</p> |
| </div> |
| <div class="paragraph"> |
| <p>The list of tested JMAP clients are:</p> |
| </div> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>[OpenPaaS](<a href="https://open-paas.org/" class="bare">https://open-paas.org/</a>) is actively using the draft version of the JMAP implementation. Migration to |
| RFC-8621 is planned.</p> |
| </li> |
| <li> |
| <p>Experiments had been run on top of [LTT.RS](<a href="https://github.com/iNPUTmice/lttrs-android" class="bare">https://github.com/iNPUTmice/lttrs-android</a>). Version in the Accept |
| headers needs to be explicitly set to <code>rfc-8621</code>. [Read more](<a href="https://github.com/linagora/james-project/pull/4089" class="bare">https://github.com/linagora/james-project/pull/4089</a>).</p> |
| </li> |
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