From 854de9bab8969eecd78107c6ae516d8595bab2d3 Mon Sep 17 00:00:00 2001
From: Matt Benjamin <mbenjamin@redhat.com>
Date: Thu, 30 May 2019 11:15:23 -0400
Subject: [PATCH] rgw: conditionally allow non-unique email addresses

Conditionally allow non-unique email address values for builtin
RGW users.

Fixes: http://tracker.ceph.com/issues/40089

Signed-off-by: Matt Benjamin <mbenjamin@redhat.com>
(cherry picked from commit 974791522007cca6d8fb30e83677f0ddd7c4e71d)
---
 src/common/options.cc | 8 ++++++++
 src/rgw/rgw_user.cc   | 8 +++++---
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/common/options.cc b/src/common/options.cc
index fa1e8007352..0ec275b9075 100644
--- a/src/common/options.cc
+++ b/src/common/options.cc
@@ -6591,6 +6591,14 @@ std::vector<Option> get_rgw_options() {
         "server static websites if s3website hostnames are configured, and unrelated to "
         "this configurable."),
 
+     Option("rgw_user_unique_email", Option::TYPE_BOOL, Option::LEVEL_BASIC)
+    .set_default(true)
+    .set_description("Require local RGW users to have unique email addresses")
+    .set_long_description(
+        "Enforce builtin user accounts to have unique email addresses.  This "
+	"setting is historical.  In future, non-enforcement of email address "
+        "uniqueness is likely to become the default."),
+
     Option("rgw_log_http_headers", Option::TYPE_STR, Option::LEVEL_BASIC)
     .set_default("")
     .set_description("List of HTTP headers to log")
diff --git a/src/rgw/rgw_user.cc b/src/rgw/rgw_user.cc
index 7cecbbee26c..df93659d39c 100644
--- a/src/rgw/rgw_user.cc
+++ b/src/rgw/rgw_user.cc
@@ -1804,9 +1804,11 @@ int RGWUser::init(RGWUserAdminOpState& op_state)
     found = (rgw_get_user_info_by_uid(store, user_id, user_info, &op_state.objv) >= 0);
     op_state.found_by_uid = found;
   }
-  if (!user_email.empty() && !found) {
-    found = (rgw_get_user_info_by_email(store, user_email, user_info, &op_state.objv) >= 0);
-    op_state.found_by_email = found;
+  if (store->ctx()->_conf.get_val<bool>("rgw_user_unique_email")) {
+    if (!user_email.empty() && !found) {
+      found = (rgw_get_user_info_by_email(store, user_email, user_info, &op_state.objv) >= 0);
+      op_state.found_by_email = found;
+    }
   }
   if (!swift_user.empty() && !found) {
     found = (rgw_get_user_info_by_swift(store, swift_user, user_info, &op_state.objv) >= 0);
-- 
2.47.3