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-rw-r--r--synapse/api/auth.py113
-rw-r--r--synapse/api/errors.py15
-rw-r--r--synapse/api/events/__init__.py7
-rw-r--r--synapse/api/events/factory.py5
-rw-r--r--synapse/api/events/room.py7
5 files changed, 140 insertions, 7 deletions
diff --git a/synapse/api/auth.py b/synapse/api/auth.py
index b4eda3df01..8f32191b57 100644
--- a/synapse/api/auth.py
+++ b/synapse/api/auth.py
@@ -18,8 +18,8 @@
 from twisted.internet import defer
 
 from synapse.api.constants import Membership, JoinRules
-from synapse.api.errors import AuthError, StoreError, Codes
-from synapse.api.events.room import RoomMemberEvent
+from synapse.api.errors import AuthError, StoreError, Codes, SynapseError
+from synapse.api.events.room import RoomMemberEvent, RoomPowerLevelsEvent
 from synapse.util.logutils import log_function
 
 import logging
@@ -67,6 +67,9 @@ class Auth(object):
                 else:
                     yield self._can_send_event(event)
 
+                if event.type == RoomPowerLevelsEvent.TYPE:
+                    yield self._check_power_levels(event)
+
                 defer.returnValue(True)
             else:
                 raise AuthError(500, "Unknown event: %s" % event)
@@ -172,7 +175,7 @@ class Auth(object):
                 if kick_level:
                     kick_level = int(kick_level)
                 else:
-                    kick_level = 5
+                    kick_level = 50
 
                 if user_level < kick_level:
                     raise AuthError(
@@ -189,7 +192,7 @@ class Auth(object):
             if ban_level:
                 ban_level = int(ban_level)
             else:
-                ban_level = 5  # FIXME (erikj): What should we do here?
+                ban_level = 50  # FIXME (erikj): What should we do here?
 
             if user_level < ban_level:
                 raise AuthError(403, "You don't have permission to ban")
@@ -305,7 +308,9 @@ class Auth(object):
         else:
             user_level = 0
 
-        logger.debug("Checking power level for %s, %s", event.user_id, user_level)
+        logger.debug(
+            "Checking power level for %s, %s", event.user_id, user_level
+        )
         if current_state and hasattr(current_state, "required_power_level"):
             req = current_state.required_power_level
 
@@ -315,3 +320,101 @@ class Auth(object):
                     403,
                     "You don't have permission to change that state"
                 )
+
+    @defer.inlineCallbacks
+    def _check_power_levels(self, event):
+        for k, v in event.content.items():
+            if k == "default":
+                continue
+
+            # FIXME (erikj): We don't want hsob_Ts in content.
+            if k == "hsob_ts":
+                continue
+
+            try:
+                self.hs.parse_userid(k)
+            except:
+                raise SynapseError(400, "Not a valid user_id: %s" % (k,))
+
+            try:
+                int(v)
+            except:
+                raise SynapseError(400, "Not a valid power level: %s" % (v,))
+
+        current_state = yield self.store.get_current_state(
+            event.room_id,
+            event.type,
+            event.state_key,
+        )
+
+        if not current_state:
+            return
+        else:
+            current_state = current_state[0]
+
+        user_level = yield self.store.get_power_level(
+            event.room_id,
+            event.user_id,
+        )
+
+        if user_level:
+            user_level = int(user_level)
+        else:
+            user_level = 0
+
+        old_list = current_state.content
+
+        # FIXME (erikj)
+        old_people = {k: v for k, v in old_list.items() if k.startswith("@")}
+        new_people = {
+            k: v for k, v in event.content.items()
+            if k.startswith("@")
+        }
+
+        removed = set(old_people.keys()) - set(new_people.keys())
+        added = set(old_people.keys()) - set(new_people.keys())
+        same = set(old_people.keys()) & set(new_people.keys())
+
+        for r in removed:
+            if int(old_list.content[r]) > user_level:
+                raise AuthError(
+                    403,
+                    "You don't have permission to remove user: %s" % (r, )
+                )
+
+        for n in added:
+            if int(event.content[n]) > user_level:
+                raise AuthError(
+                    403,
+                    "You don't have permission to add ops level greater "
+                    "than your own"
+                )
+
+        for s in same:
+            if int(event.content[s]) != int(old_list[s]):
+                if int(event.content[s]) > user_level:
+                    raise AuthError(
+                        403,
+                        "You don't have permission to add ops level greater "
+                        "than your own"
+                    )
+
+        if "default" in old_list:
+            old_default = int(old_list["default"])
+
+            if old_default > user_level:
+                raise AuthError(
+                    403,
+                    "You don't have permission to add ops level greater than "
+                    "your own"
+                )
+
+            if "default" in event.content:
+                new_default = int(event.content["default"])
+
+                if new_default > user_level:
+                    raise AuthError(
+                        403,
+                        "You don't have permission to add ops level greater "
+                        "than your own"
+                    )
diff --git a/synapse/api/errors.py b/synapse/api/errors.py
index 84afe4fa37..88175602c4 100644
--- a/synapse/api/errors.py
+++ b/synapse/api/errors.py
@@ -29,6 +29,8 @@ class Codes(object):
     NOT_FOUND = "M_NOT_FOUND"
     UNKNOWN_TOKEN = "M_UNKNOWN_TOKEN"
     LIMIT_EXCEEDED = "M_LIMIT_EXCEEDED"
+    CAPTCHA_NEEDED = "M_CAPTCHA_NEEDED"
+    CAPTCHA_INVALID = "M_CAPTCHA_INVALID"
 
 
 class CodeMessageException(Exception):
@@ -101,6 +103,19 @@ class StoreError(SynapseError):
     pass
 
 
+class InvalidCaptchaError(SynapseError):
+    def __init__(self, code=400, msg="Invalid captcha.", error_url=None,
+                 errcode=Codes.CAPTCHA_INVALID):
+        super(InvalidCaptchaError, self).__init__(code, msg, errcode)
+        self.error_url = error_url
+
+    def error_dict(self):
+        return cs_error(
+            self.msg,
+            self.errcode,
+            error_url=self.error_url,
+        )
+
 class LimitExceededError(SynapseError):
     """A client has sent too many requests and is being throttled.
     """
diff --git a/synapse/api/events/__init__.py b/synapse/api/events/__init__.py
index f95468fc65..5f300de108 100644
--- a/synapse/api/events/__init__.py
+++ b/synapse/api/events/__init__.py
@@ -157,7 +157,12 @@ class SynapseEvent(JsonEncodedObject):
 
 
 class SynapseStateEvent(SynapseEvent):
-     def __init__(self, **kwargs):
+
+    valid_keys = SynapseEvent.valid_keys + [
+        "prev_content",
+    ]
+
+    def __init__(self, **kwargs):
         if "state_key" not in kwargs:
             kwargs["state_key"] = ""
         super(SynapseStateEvent, self).__init__(**kwargs)
diff --git a/synapse/api/events/factory.py b/synapse/api/events/factory.py
index a3b293e024..5e38cdbc44 100644
--- a/synapse/api/events/factory.py
+++ b/synapse/api/events/factory.py
@@ -47,11 +47,14 @@ class EventFactory(object):
             self._event_list[event_class.TYPE] = event_class
 
         self.clock = hs.get_clock()
+        self.hs = hs
 
     def create_event(self, etype=None, **kwargs):
         kwargs["type"] = etype
         if "event_id" not in kwargs:
-            kwargs["event_id"] = random_string(10)
+            kwargs["event_id"] = "%s@%s" % (
+                random_string(10), self.hs.hostname
+            )
 
         if "ts" not in kwargs:
             kwargs["ts"] = int(self.clock.time_msec())
diff --git a/synapse/api/events/room.py b/synapse/api/events/room.py
index 33f0f0cb99..3a4dbc58ce 100644
--- a/synapse/api/events/room.py
+++ b/synapse/api/events/room.py
@@ -173,3 +173,10 @@ class RoomOpsPowerLevelsEvent(SynapseStateEvent):
 
     def get_content_template(self):
         return {}
+
+
+class RoomAliasesEvent(SynapseStateEvent):
+    TYPE = "m.room.aliases"
+
+    def get_content_template(self):
+        return {}