Deployed 69360d1 with MkDocs version: 1.6.1

2026-11-12 12:05:07 +00:00 · 2026-09-25 18:33:50 +00:00
parent cfe6d407c0
commit a1e65b3e4b
6 changed files with 738 additions and 631 deletions
@@ -2556,8 +2556,8 @@
 <p>If a user entry omits <code>playready_devices</code>, the server gives that API key <strong>no</strong> PlayReady access, and logs a warning at startup. You must name the PlayReady devices explicitly for any API key that needs them. Widevine and PlayReady device files themselves are auto-loaded from your WVDs and PRDs directories.</p>
 </div>
 <div class="admonition note">
-<p class="admonition-title">Device lists <em>are</em> the server-side-decryption switch</p>
-<p>There is no separate tier, capability flag, or permission toggle for whether the server will hand back content keys (<code>KID:KEY</code>) for a remote session download. The presence of devices on the calling API key decides it. With <strong>empty</strong> <code>devices</code> and <code>playready_devices</code>, the server can only proxy CDM challenges, so the client must operate its own CDM. Once those lists are <strong>populated</strong>, the client may request <code>mode:server_cdm</code> and receive content keys back. Do not look for a tier setting. The devices you configure are what enables server-side decryption.</p>
+<p class="admonition-title">Grants decide whether the server returns content keys</p>
+<p>The devices on an API key decide which CDM the server can use. Two grants in the same user entry decide whether the server returns content keys (<code>KID:KEY</code>) for a remote session. <code>server_cdm</code> lets the server license with those devices. <code>server_vault</code> lets a remote session that the client's own device licenses read the server vault, and the server then makes no live licence. Without either grant, the server can only proxy CDM challenges, so the client must operate its own CDM. See <a href="../../../reference/configuration/services/"><code>serve</code></a> for both grants.</p>
 </div>
 <h3 id="disabling-authentication">Disabling authentication<a class="headerlink" href="#disabling-authentication" title="Permanent link">&para;</a></h3>
 <p>The <code>--no-key</code> flag turns authentication off entirely. The server allows every request, ignores <code>X-Secret-Key</code>, and needs no API key in your configuration.</p>
@@ -2444,7 +2444,7 @@ but the defaults hold for the overwhelming majority of responses.</p>
 <tr>
 <td><code>SERVER_CDM_CAPPED</code></td>
 <td>403</td>
-<td>The server CDM does not license live above the <code>server_cdm_max_height</code> of the API key. <code>details.reason</code> is <code>server_cdm_max_height</code> (with <code>details.max_height</code>) or <code>client_device</code>, for a remote session where the client's own device licenses. A remote client licenses the track with its own device.</td>
+<td>The server CDM does not license live above the <code>server_cdm_max_height</code> of the API key. <code>details.reason</code> is <code>server_cdm_max_height</code> (with <code>details.max_height</code>), <code>client_device</code>, for a remote session where the client's own device licenses, or <code>server_device</code>, for a remote session that runs on the server's device. A remote client licenses the track with its own device, except for <code>server_device</code>: then only its own vaults can supply the key.</td>
 </tr>
 <tr>
 <td><code>GEOFENCE</code></td>
@@ -1737,6 +1737,23 @@
    </span>
  </a>
  
+    <nav class="md-nav" aria-label="Server-side vs. proxied CDM">
+      <ul class="md-nav__list">
+        
+          <li class="md-nav__item">
+  <a href="#your-own-device-identity" class="md-nav__link">
+    <span class="md-ellipsis">
+      
+        Your own device identity
+      
+    </span>
+  </a>
+  
+</li>
+        
+      </ul>
+    </nav>
+  
 </li>
      
        <li class="md-nav__item">
@@ -2214,6 +2231,23 @@
    </span>
  </a>
  
+    <nav class="md-nav" aria-label="Server-side vs. proxied CDM">
+      <ul class="md-nav__list">
+        
+          <li class="md-nav__item">
+  <a href="#your-own-device-identity" class="md-nav__link">
+    <span class="md-ellipsis">
+      
+        Your own device identity
+      
+    </span>
+  </a>
+  
+</li>
+        
+      </ul>
+    </nav>
+  
 </li>
      
        <li class="md-nav__item">
@@ -2574,7 +2608,8 @@ request returns the updated cache files (for example a refreshed token) and the
 client saves them locally, so the <strong>next</strong> remote session can skip interactive
 authentication. The login belongs to the client when the client sent
 cookies, credentials, or cache files, or answered a login prompt (a device code
-or an OTP) that led to a successful login. A server-account login never does.
+or an OTP) that led to a successful login. A server-account login never does,
+and neither does a remote session on the server's device (see below).
 The client saves only the returned files that pass the same profile check it
 applies before it sends them, so a file for another profile cannot overwrite
 that profile's local file.</p>
@@ -2604,6 +2639,10 @@ the raw license bytes come back for your local CDM to parse.</p>
 <ul>
 <li>Keeps your CDM local. The server only relays the license request.</li>
 <li>Used when <code>server_cdm</code> is <code>false</code> (the default).</li>
+<li>The service on the server sees your device, not the server's: its DRM system,
+  security level, system ID and device type. A CDM call that the service makes
+  (for example a session-key exchange at login) goes to your client as a <code>cdm_call</code>,
+  and your local CDM answers it. See <a href="#your-own-device-identity">Your own device identity</a>.</li>
 </ul>
 </div>
 <div class="tabbed-block">
@@ -2640,6 +2679,47 @@ server CDM licence answers <code>403 SERVER_CDM_CAPPED</code> for such a track.
 licenses those tracks in proxy mode with its own local CDM. See
 <a href="../../../reference/configuration/services/"><code>server_cdm_max_height</code></a>.</p>
 </div>
+<h3 id="your-own-device-identity">Your own device identity<a class="headerlink" href="#your-own-device-identity" title="Permanent link">&para;</a></h3>
+<p>A service can need more than a licence challenge from your device: an ESN, model keys, or a
+session-key exchange that runs on the CDM. The device never leaves your machine. Only these cross
+the wire:</p>
+<ul>
+<li><strong>Device facts.</strong> When it creates the remote session, the client sends its DRM system, security level,
+  system ID and device type. The service sees a stand-in with these facts.</li>
+<li><strong>CDM calls.</strong> When the service calls the CDM, the server sends a <code>cdm_call</code> to the client
+  and waits. The client makes the challenge, or parses the licence, on its own CDM. When
+  the service closes a CDM session, the server sends a <code>close</code> call, because a CDM holds
+  only a few sessions. The client polls for calls during login and while one of its own
+  requests runs service code, so an idle remote session sends nothing extra.</li>
+<li><strong>Session keys only.</strong> A <code>keys</code> call returns Widevine <code>OPERATOR_SESSION</code> and <code>SIGNING</code>
+  keys. It never returns a content key, and the client refuses a PlayReady <code>keys</code> call.
+  So a server cannot use your device to license titles for itself.</li>
+<li><strong>Identity config.</strong> A service names the config keys a client may send (for example
+  <code>esn</code>, <code>Kpe</code>, <code>Kph</code>, <code>esn_map</code>). The server lists them in the service listing as
+  <code>client_config</code>. The client sends only those keys, from its own <code>services: &lt;TAG&gt;:</code>
+  block in <code>unshackle.yaml</code>. When the client sends an identity, the server drops its own
+  value for each of those keys, so the two identities never mix. A mapping (such as
+  <code>esn_map</code>) merges the client's entries over the server's. A client entry replaces a
+  server entry with the same key, also when the server's key is a number. The server keeps
+  these values in the remote session's memory only.</li>
+</ul>
+<p>A service can also offer an option that builds the remote session on the server's own
+device and identity, for the quality that device reaches. The session then makes no live
+licence at all: each content key comes from the server vault or the client's own vaults,
+and a content key that no vault holds stops the download with an error. The create
+response sets <code>server_device</code> to <code>true</code> for such a remote session. The service then uses
+the server's own config: the client's identity values do not apply. The client reads the
+server vault only when the API key has the <code>server_vault</code> grant (or <code>server_cdm</code>); without
+it, the client reads only its own vaults. The login tokens of such a remote session hold the
+server's device identity, so the server keeps them: <code>DELETE</code> returns no cache files, and the
+HTTP session headers and <code>track.data</code> lose their secret-looking keys, as for a server login.</p>
+<div class="admonition note">
+<p class="admonition-title">The server vault in a session your device licenses</p>
+<p>With the <code>server_vault</code> grant (or <code>server_cdm</code>) on the API key, a remote session that your own
+device licenses still takes content keys from the server vault. The server tries the
+vault first. A track that no server vault holds goes back to your device. See
+<a href="../../../reference/configuration/services/"><code>server_vault</code></a>.</p>
+</div>
 <hr />
 <h2 id="remote-session-lifecycle-and-expiry">Remote session lifecycle and expiry<a class="headerlink" href="#remote-session-lifecycle-and-expiry" title="Permanent link">&para;</a></h2>
 <p>Remote sessions live in an <strong>in-memory store on the server</strong> and expire on a timer. You
@@ -2799,8 +2879,10 @@ from a browser origin, not when you want only the local HTTP API.</p>
 <p><code>POST /api/session/create</code> requires <code>service</code> and <code>title_id</code>. It also accepts
 <code>credentials</code>, <code>cookies</code> (base64 of zlib-compressed Netscape cookie file), <code>proxy</code>,
 <code>no_proxy</code>, <code>profile</code>, <code>cache</code> (a map of <code>filename → base64(zlib(bytes))</code>),
-<code>client_region</code>, <code>cdm_type</code>, <code>client</code> (a freeform identity object the dashboard
-shows as sent), and the track-selection hints <code>range_</code>, <code>vcodec</code>,
+<code>client_region</code>, <code>cdm_type</code>, <code>cdm_security_level</code>, <code>cdm_relay</code> (<code>true</code> when the client
+answers CDM calls), <code>cdm_system_id</code> and <code>cdm_device_type</code> (Widevine only), <code>service_config</code>
+(the identity config keys the service lists in <code>client_config</code>), <code>client</code> (a freeform identity
+object the dashboard shows as sent), and the track-selection hints <code>range_</code>, <code>vcodec</code>,
 <code>quality</code>, <code>best_available</code>, plus arbitrary service CLI options
 (<code>additionalProperties: true</code>).</p>
 <p><code>dl_params</code> holds the <code>dl</code> track selection: <code>lang</code>, <code>v_lang</code> and <code>a_lang</code>
@@ -2823,8 +2905,12 @@ the client sends and gets back belong to that profile. A service can also use
 the name to select per-profile entries in the server's service config, such as
 a per-profile ESN.</p>
 <p>The response returns <strong>before</strong> authentication finishes:</p>
-<div class="language-json highlight"><pre><span></span><code><span id="__span-6-1"><a id="__codelineno-6-1" name="__codelineno-6-1" href="#__codelineno-6-1"></a><span class="p">{</span><span class="w"> </span><span class="nt">"session_id"</span><span class="p">:</span><span class="w"> </span><span class="s2">"...uuid4..."</span><span class="p">,</span><span class="w"> </span><span class="nt">"service"</span><span class="p">:</span><span class="w"> </span><span class="s2">"EXAMPLE"</span><span class="p">,</span><span class="w"> </span><span class="nt">"status"</span><span class="p">:</span><span class="w"> </span><span class="s2">"authenticating"</span><span class="w"> </span><span class="p">}</span>
+<div class="language-json highlight"><pre><span></span><code><span id="__span-6-1"><a id="__codelineno-6-1" name="__codelineno-6-1" href="#__codelineno-6-1"></a><span class="p">{</span><span class="w"> </span><span class="nt">"session_id"</span><span class="p">:</span><span class="w"> </span><span class="s2">"...uuid4..."</span><span class="p">,</span><span class="w"> </span><span class="nt">"service"</span><span class="p">:</span><span class="w"> </span><span class="s2">"EXAMPLE"</span><span class="p">,</span><span class="w"> </span><span class="nt">"status"</span><span class="p">:</span><span class="w"> </span><span class="s2">"authenticating"</span><span class="p">,</span>
+</span><span id="__span-6-2"><a id="__codelineno-6-2" name="__codelineno-6-2" href="#__codelineno-6-2"></a><span class="w">  </span><span class="nt">"server_cdm"</span><span class="p">:</span><span class="w"> </span><span class="kc">false</span><span class="p">,</span><span class="w"> </span><span class="nt">"server_cdm_max_height"</span><span class="p">:</span><span class="w"> </span><span class="kc">null</span><span class="p">,</span><span class="w"> </span><span class="nt">"server_vault"</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span><span class="w"> </span><span class="nt">"server_device"</span><span class="p">:</span><span class="w"> </span><span class="kc">false</span><span class="w"> </span><span class="p">}</span>
 </span></code></pre></div>
+<p><code>server_vault</code> tells the client that the server vault serves a remote session its own device
+licenses. <code>server_device</code> tells it that the service runs on the server's device, so every
+content key comes from a vault.</p>
 <p>Authentication runs on a background thread (<code>asyncio.to_thread(authenticate, ...)</code>).
 The remote session starts in <code>AUTHENTICATING</code>. The client must poll the prompt
 endpoint until it reaches <code>authenticated</code> (or <code>failed</code>).</p>
@@ -2840,6 +2926,10 @@ layer.</p>
 <li>A prompt after authentication (in <code>get_titles()</code>, <code>get_tracks()</code> or licensing) raises
  <code>RuntimeError</code> at once. The client polls for prompts only during authentication, so
  no answer can come.</li>
+<li>A CDM call (<code>InputBridge.request_cdm</code>) works during and after authentication, because the
+  client also polls while its own requests run. A call that no client fetches within 10 seconds
+  fails then, because no client is listening. A fetched call waits 60 seconds for its answer.
+  The call leaves the auth status as it was. An answer never marks the remote session as client-authenticated.</li>
 <li><code>AUTH_INPUT_TIMEOUT = 600.0</code> seconds. This is also the TTL granted to
  <code>AUTHENTICATING</code> / <code>PENDING_INPUT</code> sessions in the store.</li>
 </ul>
@@ -2847,8 +2937,15 @@ layer.</p>
 <div class="language-json highlight"><pre><span></span><code><span id="__span-7-1"><a id="__codelineno-7-1" name="__codelineno-7-1" href="#__codelineno-7-1"></a><span class="p">{</span><span class="w"> </span><span class="nt">"status"</span><span class="p">:</span><span class="w"> </span><span class="s2">"authenticated"</span><span class="w"> </span><span class="p">}</span>
 </span><span id="__span-7-2"><a id="__codelineno-7-2" name="__codelineno-7-2" href="#__codelineno-7-2"></a><span class="p">{</span><span class="w"> </span><span class="nt">"status"</span><span class="p">:</span><span class="w"> </span><span class="s2">"authenticating"</span><span class="w"> </span><span class="p">}</span>
 </span><span id="__span-7-3"><a id="__codelineno-7-3" name="__codelineno-7-3" href="#__codelineno-7-3"></a><span class="p">{</span><span class="w"> </span><span class="nt">"status"</span><span class="p">:</span><span class="w"> </span><span class="s2">"pending_input"</span><span class="p">,</span><span class="w"> </span><span class="nt">"prompt"</span><span class="p">:</span><span class="w"> </span><span class="s2">"Enter code: "</span><span class="w"> </span><span class="p">}</span>
-</span><span id="__span-7-4"><a id="__codelineno-7-4" name="__codelineno-7-4" href="#__codelineno-7-4"></a><span class="p">{</span><span class="w"> </span><span class="nt">"status"</span><span class="p">:</span><span class="w"> </span><span class="s2">"failed"</span><span class="p">,</span><span class="w"> </span><span class="nt">"error"</span><span class="p">:</span><span class="w"> </span><span class="s2">"...message..."</span><span class="w"> </span><span class="p">}</span>
+</span><span id="__span-7-4"><a id="__codelineno-7-4" name="__codelineno-7-4" href="#__codelineno-7-4"></a><span class="p">{</span><span class="w"> </span><span class="nt">"status"</span><span class="p">:</span><span class="w"> </span><span class="s2">"pending_input"</span><span class="p">,</span><span class="w"> </span><span class="nt">"prompt"</span><span class="p">:</span><span class="w"> </span><span class="s2">"..."</span><span class="p">,</span><span class="w"> </span><span class="nt">"cdm_call"</span><span class="p">:</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nt">"op"</span><span class="p">:</span><span class="w"> </span><span class="s2">"challenge"</span><span class="p">,</span><span class="w"> </span><span class="nt">"drm"</span><span class="p">:</span><span class="w"> </span><span class="s2">"widevine"</span><span class="p">,</span><span class="w"> </span><span class="nt">"init_data"</span><span class="p">:</span><span class="w"> </span><span class="s2">"..."</span><span class="p">,</span><span class="w"> </span><span class="nt">"license_type"</span><span class="p">:</span><span class="w"> </span><span class="s2">"OFFLINE"</span><span class="p">,</span><span class="w"> </span><span class="nt">"privacy_mode"</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span><span class="w"> </span><span class="nt">"service_certificate"</span><span class="p">:</span><span class="w"> </span><span class="s2">"..."</span><span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="p">}</span>
+</span><span id="__span-7-5"><a id="__codelineno-7-5" name="__codelineno-7-5" href="#__codelineno-7-5"></a><span class="p">{</span><span class="w"> </span><span class="nt">"status"</span><span class="p">:</span><span class="w"> </span><span class="s2">"failed"</span><span class="p">,</span><span class="w"> </span><span class="nt">"error"</span><span class="p">:</span><span class="w"> </span><span class="s2">"...message..."</span><span class="w"> </span><span class="p">}</span>
 </span></code></pre></div>
+<p>A <code>cdm_call</code> comes first, in any auth state. The client answers it with a JSON object in
+<code>response</code>: <code>{"session": "...", "challenge": "&lt;base64&gt;"}</code> for <code>challenge</code>,
+<code>{"keys": [{"kid", "type", "key", "permissions"}]}</code> for <code>keys</code>, <code>{}</code> for <code>close</code>, or
+<code>{"error": "..."}</code> when its CDM refuses. An older client refuses <code>close</code>, and the server
+ignores that refusal. An answered call stops being pending at once, so a client that polls again
+straight away does not see it twice.</p>
 <p>A missing remote session returns <code>404 SESSION_NOT_FOUND</code>. An IP mismatch returns
 <code>403 FORBIDDEN</code>. <code>POST /api/session/{id}/prompt</code> takes <code>{ "response": "..." }</code> and
 returns <code>{ "status": "accepted" }</code>. A post with no pending prompt is an
@@ -2929,8 +3026,8 @@ returns <code>{ "status": "accepted" }</code>. A post with no pending prompt is
 <div class="language-text highlight"><pre><span></span><code><span id="__span-8-1"><a id="__codelineno-8-1" name="__codelineno-8-1" href="#__codelineno-8-1"></a>_sessions/&lt;pbkdf2_hmac(sha256, X-Secret-Key, "unshackle-session-ns", 100000)[:12]&gt;/&lt;session_id&gt;/&lt;service&gt;
 </span></code></pre></div>
 <p>The handler writes forwarded <code>cache</code> files into that directory before authentication.
-On <code>DELETE</code>, when the login belongs to the client (<code>client_auth</code>), the handler
-harvests updated cache files from the whole directory tree (compressing each
+On <code>DELETE</code>, when the login belongs to the client (<code>client_auth</code>) and the remote
+session does not run on the server's device, the handler harvests updated cache files from the whole directory tree (compressing each
 with zlib and base64-encoding, <strong>excluding</strong> <code>titles_*</code> files) and returns them
 under a <code>cache</code> field, so the client can keep refreshed tokens. Each cache key
 is the file path relative to that directory, with <code>/</code> separators and no <code>.json</code>
@@ -2358,6 +2358,13 @@ the limit it always goes to the client's device. A licence for a lower track can
 content key of a higher track when the service shares one content key between them. With server
 accounts enabled, a client that reports a stronger device than it holds makes the server's
 account request those manifests; the licence server still refuses its challenge.</p>
+<p><code>server_vault</code> lets a remote session that the client's own device licenses take content keys
+from the server vault. Set it to <code>true</code> for every service, or to a list of service tags. It is
+<code>false</code> unless the entry sets it, and <code>server_cdm</code> for a service implies it. The server looks up
+every KID of the track in its vault and makes no live licence. A track that the vault does not
+hold goes back to the client's device. When the service runs the remote session on the server's
+own device (a service option, such as a server-identity flag), the client's own vaults, and the
+server vault with this grant, are the only source, and a missing content key stops the download.</p>
 <p><code>admin</code> is a boolean that lets the API key run the maintenance endpoints (clear-cache, clear-temp, refresh-services). It is <code>false</code> unless the entry sets it. Keys that have no <code>users</code> entry, such as <code>api_secret</code>, keep that access.</p>
 <p>A <code>tier</code> names an entry under <code>serve.tiers</code>, which holds the settings that several API keys
 share. Today a tier carries <code>rate_limit</code>, the requests per hour that API key may make; an API
@@ -2441,6 +2448,9 @@ region; a client that reports none is not blocked.</p>
 </span><span id="__span-3-20"><a id="__codelineno-3-20" name="__codelineno-3-20" href="#__codelineno-3-20"></a><span class="w">      </span><span class="nt">server_cdm</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="nv">EXAMPLE1</span><span class="p p-Indicator">]</span><span class="w">      </span><span class="c1"># the server licenses only EXAMPLE1; EXAMPLE2 needs a local CDM</span>
 </span><span id="__span-3-21"><a id="__codelineno-3-21" name="__codelineno-3-21" href="#__codelineno-3-21"></a><span class="w">      </span><span class="nt">server_accounts</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="nv">EXAMPLE1</span><span class="p p-Indicator">]</span><span class="w"> </span><span class="c1"># may authenticate EXAMPLE1 with one of the server's own accounts</span>
 </span><span id="__span-3-22"><a id="__codelineno-3-22" name="__codelineno-3-22" href="#__codelineno-3-22"></a><span class="w">      </span><span class="nt">server_proxy</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">true</span><span class="w">          </span><span class="c1"># this key may also use the server's proxy providers</span>
+</span><span id="__span-3-23"><a id="__codelineno-3-23" name="__codelineno-3-23" href="#__codelineno-3-23"></a><span class="w">    </span><span class="nt">f3a4b5c6</span><span class="p">:</span>
+</span><span id="__span-3-24"><a id="__codelineno-3-24" name="__codelineno-3-24" href="#__codelineno-3-24"></a><span class="w">      </span><span class="nt">services</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="nv">EXAMPLE1</span><span class="p p-Indicator">]</span>
+</span><span id="__span-3-25"><a id="__codelineno-3-25" name="__codelineno-3-25" href="#__codelineno-3-25"></a><span class="w">      </span><span class="nt">server_vault</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="nv">EXAMPLE1</span><span class="p p-Indicator">]</span><span class="w">    </span><span class="c1"># the client's device licenses; the server vault still serves keys</span>
 </span></code></pre></div>
 <div class="admonition note">
 <p class="admonition-title"><code>dl</code> keys inside <code>serve</code></p>