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-rw-r--r--synapse/rest/client/v2_alpha/devices.py134
-rw-r--r--synapse/rest/client/v2_alpha/keys.py37
2 files changed, 156 insertions, 15 deletions
diff --git a/synapse/rest/client/v2_alpha/devices.py b/synapse/rest/client/v2_alpha/devices.py
index 7e174de692..af117cb27c 100644
--- a/synapse/rest/client/v2_alpha/devices.py
+++ b/synapse/rest/client/v2_alpha/devices.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2015, 2016 OpenMarket Ltd
+# Copyright 2020 The Matrix.org Foundation C.I.C.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -21,6 +22,7 @@ from synapse.http.servlet import (
     assert_params_in_dict,
     parse_json_object_from_request,
 )
+from synapse.http.site import SynapseRequest
 
 from ._base import client_patterns, interactive_auth_handler
 
@@ -151,7 +153,139 @@ class DeviceRestServlet(RestServlet):
         return 200, {}
 
 
+class DehydratedDeviceServlet(RestServlet):
+    """Retrieve or store a dehydrated device.
+
+    GET /org.matrix.msc2697.v2/dehydrated_device
+
+    HTTP/1.1 200 OK
+    Content-Type: application/json
+
+    {
+      "device_id": "dehydrated_device_id",
+      "device_data": {
+        "algorithm": "org.matrix.msc2697.v1.dehydration.v1.olm",
+        "account": "dehydrated_device"
+      }
+    }
+
+    PUT /org.matrix.msc2697/dehydrated_device
+    Content-Type: application/json
+
+    {
+      "device_data": {
+        "algorithm": "org.matrix.msc2697.v1.dehydration.v1.olm",
+        "account": "dehydrated_device"
+      }
+    }
+
+    HTTP/1.1 200 OK
+    Content-Type: application/json
+
+    {
+      "device_id": "dehydrated_device_id"
+    }
+
+    """
+
+    PATTERNS = client_patterns("/org.matrix.msc2697.v2/dehydrated_device", releases=())
+
+    def __init__(self, hs):
+        super().__init__()
+        self.hs = hs
+        self.auth = hs.get_auth()
+        self.device_handler = hs.get_device_handler()
+
+    async def on_GET(self, request: SynapseRequest):
+        requester = await self.auth.get_user_by_req(request)
+        dehydrated_device = await self.device_handler.get_dehydrated_device(
+            requester.user.to_string()
+        )
+        if dehydrated_device is not None:
+            (device_id, device_data) = dehydrated_device
+            result = {"device_id": device_id, "device_data": device_data}
+            return (200, result)
+        else:
+            raise errors.NotFoundError("No dehydrated device available")
+
+    async def on_PUT(self, request: SynapseRequest):
+        submission = parse_json_object_from_request(request)
+        requester = await self.auth.get_user_by_req(request)
+
+        if "device_data" not in submission:
+            raise errors.SynapseError(
+                400, "device_data missing", errcode=errors.Codes.MISSING_PARAM,
+            )
+        elif not isinstance(submission["device_data"], dict):
+            raise errors.SynapseError(
+                400,
+                "device_data must be an object",
+                errcode=errors.Codes.INVALID_PARAM,
+            )
+
+        device_id = await self.device_handler.store_dehydrated_device(
+            requester.user.to_string(),
+            submission["device_data"],
+            submission.get("initial_device_display_name", None),
+        )
+        return 200, {"device_id": device_id}
+
+
+class ClaimDehydratedDeviceServlet(RestServlet):
+    """Claim a dehydrated device.
+
+    POST /org.matrix.msc2697.v2/dehydrated_device/claim
+    Content-Type: application/json
+
+    {
+      "device_id": "dehydrated_device_id"
+    }
+
+    HTTP/1.1 200 OK
+    Content-Type: application/json
+
+    {
+      "success": true,
+    }
+
+    """
+
+    PATTERNS = client_patterns(
+        "/org.matrix.msc2697.v2/dehydrated_device/claim", releases=()
+    )
+
+    def __init__(self, hs):
+        super().__init__()
+        self.hs = hs
+        self.auth = hs.get_auth()
+        self.device_handler = hs.get_device_handler()
+
+    async def on_POST(self, request: SynapseRequest):
+        requester = await self.auth.get_user_by_req(request)
+
+        submission = parse_json_object_from_request(request)
+
+        if "device_id" not in submission:
+            raise errors.SynapseError(
+                400, "device_id missing", errcode=errors.Codes.MISSING_PARAM,
+            )
+        elif not isinstance(submission["device_id"], str):
+            raise errors.SynapseError(
+                400, "device_id must be a string", errcode=errors.Codes.INVALID_PARAM,
+            )
+
+        result = await self.device_handler.rehydrate_device(
+            requester.user.to_string(),
+            self.auth.get_access_token_from_request(request),
+            submission["device_id"],
+        )
+
+        return (200, result)
+
+
 def register_servlets(hs, http_server):
     DeleteDevicesRestServlet(hs).register(http_server)
     DevicesRestServlet(hs).register(http_server)
     DeviceRestServlet(hs).register(http_server)
+    DehydratedDeviceServlet(hs).register(http_server)
+    ClaimDehydratedDeviceServlet(hs).register(http_server)
diff --git a/synapse/rest/client/v2_alpha/keys.py b/synapse/rest/client/v2_alpha/keys.py
index 55c4606569..b91996c738 100644
--- a/synapse/rest/client/v2_alpha/keys.py
+++ b/synapse/rest/client/v2_alpha/keys.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Copyright 2015, 2016 OpenMarket Ltd
 # Copyright 2019 New Vector Ltd
+# Copyright 2020 The Matrix.org Foundation C.I.C.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -67,6 +68,7 @@ class KeyUploadServlet(RestServlet):
         super().__init__()
         self.auth = hs.get_auth()
         self.e2e_keys_handler = hs.get_e2e_keys_handler()
+        self.device_handler = hs.get_device_handler()
 
     @trace(opname="upload_keys")
     async def on_POST(self, request, device_id):
@@ -75,23 +77,28 @@ class KeyUploadServlet(RestServlet):
         body = parse_json_object_from_request(request)
 
         if device_id is not None:
-            # passing the device_id here is deprecated; however, we allow it
-            # for now for compatibility with older clients.
+            # Providing the device_id should only be done for setting keys
+            # for dehydrated devices; however, we allow it for any device for
+            # compatibility with older clients.
             if requester.device_id is not None and device_id != requester.device_id:
-                set_tag("error", True)
-                log_kv(
-                    {
-                        "message": "Client uploading keys for a different device",
-                        "logged_in_id": requester.device_id,
-                        "key_being_uploaded": device_id,
-                    }
-                )
-                logger.warning(
-                    "Client uploading keys for a different device "
-                    "(logged in as %s, uploading for %s)",
-                    requester.device_id,
-                    device_id,
+                dehydrated_device = await self.device_handler.get_dehydrated_device(
+                    user_id
                 )
+                if dehydrated_device is not None and device_id != dehydrated_device[0]:
+                    set_tag("error", True)
+                    log_kv(
+                        {
+                            "message": "Client uploading keys for a different device",
+                            "logged_in_id": requester.device_id,
+                            "key_being_uploaded": device_id,
+                        }
+                    )
+                    logger.warning(
+                        "Client uploading keys for a different device "
+                        "(logged in as %s, uploading for %s)",
+                        requester.device_id,
+                        device_id,
+                    )
         else:
             device_id = requester.device_id