Revert "Revert "Merge pull request #7315 from matrix-org/babolivier/request_token""

This reverts commit 1adf6a55870aa08de272591ff49db9dc49738076.

2 files changed, 27 insertions, 2 deletions

diff --git a/synapse/rest/client/v2_alpha/account.py b/synapse/rest/client/v2_alpha/account.py
index 31435b1e1c..1bd0234779 100644
--- a/synapse/rest/client/v2_alpha/account.py
+++ b/synapse/rest/client/v2_alpha/account.py
@@ -30,7 +30,7 @@ from synapse.http.servlet import (
 )
 from synapse.push.mailer import Mailer, load_jinja2_templates
 from synapse.util.msisdn import phone_number_to_msisdn
-from synapse.util.stringutils import assert_valid_client_secret
+from synapse.util.stringutils import assert_valid_client_secret, random_string
 from synapse.util.threepids import check_3pid_allowed
 
 from ._base import client_patterns, interactive_auth_handler
@@ -100,6 +100,11 @@ class EmailPasswordRequestTokenRestServlet(RestServlet):
         )
 
         if existing_user_id is None:
+            if self.config.request_token_inhibit_3pid_errors:
+                # Make the client think the operation succeeded. See the rationale in the
+                # comments for request_token_inhibit_3pid_errors.
+                return 200, {"sid": random_string(16)}
+
             raise SynapseError(400, "Email not found", Codes.THREEPID_NOT_FOUND)
 
         if self.config.threepid_behaviour_email == ThreepidBehaviour.REMOTE:
@@ -390,6 +395,11 @@ class EmailThreepidRequestTokenRestServlet(RestServlet):
         )
 
         if existing_user_id is not None:
+            if self.config.request_token_inhibit_3pid_errors:
+                # Make the client think the operation succeeded. See the rationale in the
+                # comments for request_token_inhibit_3pid_errors.
+                return 200, {"sid": random_string(16)}
+
             raise SynapseError(400, "Email is already in use", Codes.THREEPID_IN_USE)
 
         if self.config.threepid_behaviour_email == ThreepidBehaviour.REMOTE:
@@ -453,6 +463,11 @@ class MsisdnThreepidRequestTokenRestServlet(RestServlet):
         existing_user_id = await self.store.get_user_id_by_threepid("msisdn", msisdn)
 
         if existing_user_id is not None:
+            if self.hs.config.request_token_inhibit_3pid_errors:
+                # Make the client think the operation succeeded. See the rationale in the
+                # comments for request_token_inhibit_3pid_errors.
+                return 200, {"sid": random_string(16)}
+
             raise SynapseError(400, "MSISDN is already in use", Codes.THREEPID_IN_USE)
 
         if not self.hs.config.account_threepid_delegate_msisdn:
diff --git a/synapse/rest/client/v2_alpha/register.py b/synapse/rest/client/v2_alpha/register.py
index 431ecf4f84..d1b5c49989 100644
--- a/synapse/rest/client/v2_alpha/register.py
+++ b/synapse/rest/client/v2_alpha/register.py
@@ -49,7 +49,7 @@ from synapse.http.servlet import (
 from synapse.push.mailer import load_jinja2_templates
 from synapse.util.msisdn import phone_number_to_msisdn
 from synapse.util.ratelimitutils import FederationRateLimiter
-from synapse.util.stringutils import assert_valid_client_secret
+from synapse.util.stringutils import assert_valid_client_secret, random_string
 from synapse.util.threepids import check_3pid_allowed
 
 from ._base import client_patterns, interactive_auth_handler
@@ -135,6 +135,11 @@ class EmailRegisterRequestTokenRestServlet(RestServlet):
         )
 
         if existing_user_id is not None:
+            if self.hs.config.request_token_inhibit_3pid_errors:
+                # Make the client think the operation succeeded. See the rationale in the
+                # comments for request_token_inhibit_3pid_errors.
+                return 200, {"sid": random_string(16)}
+
             raise SynapseError(400, "Email is already in use", Codes.THREEPID_IN_USE)
 
         if self.config.threepid_behaviour_email == ThreepidBehaviour.REMOTE:
@@ -202,6 +207,11 @@ class MsisdnRegisterRequestTokenRestServlet(RestServlet):
         )
 
         if existing_user_id is not None:
+            if self.hs.config.request_token_inhibit_3pid_errors:
+                # Make the client think the operation succeeded. See the rationale in the
+                # comments for request_token_inhibit_3pid_errors.
+                return 200, {"sid": random_string(16)}
+
             raise SynapseError(
                 400, "Phone number is already in use", Codes.THREEPID_IN_USE
             )