don't unwrap UserId from state key

src/base_client.rs

@@ -50,17 +50,6 @@ use ruma_identifiers::DeviceId;
 
 pub type Token = String;
 
-#[derive(Debug, Default)]
-/// `RoomName` allows the calculation of a text room name.
-pub struct RoomName {
-    /// The displayed name of the room.
-    name: Option<String>,
-    /// The canonical alias of the room ex. `#room-name:example.com` and port number.
-    canonical_alias: Option<RoomAliasId>,
-    /// List of `RoomAliasId`s the room has been given.
-    aliases: Vec<RoomAliasId>,
-}
-
 /// A no IO Client implementation.
 ///
 /// This Client is a state machine that receives responses and events and

src/models/room.rs

@@ -156,7 +156,7 @@ impl Room {
         }
 
         let member = RoomMember::new(event);
-
+        
         self.members
             .insert(UserId::try_from(event.state_key.as_str()).unwrap(), member);
 
@@ -187,9 +187,14 @@ impl Room {
         match event.membership_change() {
             MembershipChange::Invited | MembershipChange::Joined => self.add_member(event),
             _ => {
+                let user = if let Ok(id) = UserId::try_from(event.state_key.as_str()) {
+                    id
+                } else {
+                    return false;
+                };
                 if let Some(member) = self
                     .members
-                    .get_mut(&UserId::try_from(event.state_key.as_str()).unwrap())
+                    .get_mut(&user)
                 {
                     member.update_member(event)
                 } else {
@@ -234,9 +239,17 @@ impl Room {
     ///
     /// Returns true if the room name changed, false otherwise.
     pub fn handle_power_level(&mut self, event: &PowerLevelsEvent) -> bool {
+        // when getting a response from the actual matrix server `state_key`
+        // was empty, the spec says "state_key: A zero-length string."
+        // for `m.room.power_levels` events
+        let user = if let Ok(id) = UserId::try_from(event.state_key.as_str()) {
+            id
+        } else {
+            return false;
+        };
         if let Some(member) = self
             .members
-            .get_mut(&UserId::try_from(event.state_key.as_str()).unwrap())
+            .get_mut(&user)
         {
             member.update_power(event)
         } else {
@@ -260,7 +273,7 @@ impl Room {
         match event {
             // update to the current members of the room
             RoomEvent::RoomMember(m) => self.handle_membership(m),
-            // finds all events related to the name of the room for later calculation
+            // finds all events related to the name of the room for later use
             RoomEvent::RoomName(n) => self.handle_room_name(n),
             RoomEvent::RoomCanonicalAlias(ca) => self.handle_canonical(ca),
             RoomEvent::RoomAliases(a) => self.handle_room_aliases(a),

tests/data/sync2.json

@@ -0,0 +1,160 @@
+{
+    "next_batch": "s72595_4483_1934",
+    "presence": {
+      "events": [
+        {
+          "content": {
+            "avatar_url": "mxc://localhost:wefuiwegh8742w",
+            "last_active_ago": 2478593,
+            "presence": "online",
+            "currently_active": false,
+            "status_msg": "Making cupcakes"
+          },
+          "type": "m.presence",
+          "sender": "@example:localhost"
+        }
+      ]
+    },
+    "account_data": {
+      "events": [
+        {
+          "type": "org.example.custom.config",
+          "content": {
+            "custom_config_key": "custom_config_value"
+          }
+        }
+      ]
+    },
+    "rooms": {
+      "join": {
+        "!726s6s6q:example.com": {
+          "summary": {
+            "m.heroes": [
+              "@alice:example.com",
+              "@bob:example.com"
+            ],
+            "m.joined_member_count": 2,
+            "m.invited_member_count": 0
+          },
+          "state": {
+            "events": [
+              {
+                "content": {
+                  "membership": "join",
+                  "avatar_url": "mxc://example.org/SEsfnsuifSDFSSEF",
+                  "displayname": "Alice Margatroid"
+                },
+                "type": "m.room.member",
+                "event_id": "$143273582443PhrSn:example.org",
+                "room_id": "!726s6s6q:example.com",
+                "sender": "@example:example.org",
+                "origin_server_ts": 1432735824653,
+                "unsigned": {
+                  "age": 1234
+                },
+                "state_key": "@alice:example.org"
+              }
+            ]
+          },
+          "timeline": {
+            "events": [
+              {
+                "content": {
+                  "membership": "join",
+                  "avatar_url": "mxc://example.org/SEsfnsuifSDFSSEF",
+                  "displayname": "Alice Margatroid"
+                },
+                "type": "m.room.member",
+                "event_id": "$143273582443PhrSn:example.org",
+                "room_id": "!726s6s6q:example.com",
+                "sender": "@example:example.org",
+                "origin_server_ts": 1432735824653,
+                "unsigned": {
+                  "age": 1234
+                },
+                "state_key": "@alice:example.org"
+              },
+              {
+                "content": {
+                  "body": "This is an example text message",
+                  "msgtype": "m.text",
+                  "format": "org.matrix.custom.html",
+                  "formatted_body": "<b>This is an example text message</b>"
+                },
+                "type": "m.room.message",
+                "event_id": "$143273582443PhrSn:example.org",
+                "room_id": "!726s6s6q:example.com",
+                "sender": "@example:example.org",
+                "origin_server_ts": 1432735824653,
+                "unsigned": {
+                  "age": 1234
+                }
+              }
+            ],
+            "limited": true,
+            "prev_batch": "t34-23535_0_0"
+          },
+          "ephemeral": {
+            "events": [
+              {
+                "content": {
+                  "user_ids": [
+                    "@alice:matrix.org",
+                    "@bob:example.com"
+                  ]
+                },
+                "type": "m.typing",
+                "room_id": "!jEsUZKDJdhlrceRyVU:example.org"
+              }
+            ]
+          },
+          "account_data": {
+            "events": [
+              {
+                "content": {
+                  "tags": {
+                    "u.work": {
+                      "order": 0.9
+                    }
+                  }
+                },
+                "type": "m.tag"
+              },
+              {
+                "type": "org.example.custom.room.config",
+                "content": {
+                  "custom_config_key": "custom_config_value"
+                }
+              }
+            ]
+          }
+        }
+      },
+      "invite": {
+        "!696r7674:example.com": {
+          "invite_state": {
+            "events": [
+              {
+                "sender": "@alice:example.com",
+                "type": "m.room.name",
+                "state_key": "",
+                "content": {
+                  "name": "My Room Name"
+                }
+              },
+              {
+                "sender": "@alice:example.com",
+                "type": "m.room.member",
+                "state_key": "@bob:example.com",
+                "content": {
+                  "membership": "invite"
+                }
+              }
+            ]
+          }
+        }
+      },
+      "leave": {}
+    }
+  }
+