2 files changed, 18 insertions, 0 deletions

diff --git a/src/core/hle/service/acc/profile_manager.cpp b/src/core/hle/service/acc/profile_manager.cpp
index 683f44e27..29a10ad13 100644
--- a/src/core/hle/service/acc/profile_manager.cpp
+++ b/src/core/hle/service/acc/profile_manager.cpp
@@ -11,6 +11,7 @@
 #include "common/fs/path_util.h"
 #include "common/polyfill_ranges.h"
 #include "common/settings.h"
+#include "common/string_util.h"
 #include "core/hle/service/acc/profile_manager.h"
 
 namespace Service::Account {
@@ -164,6 +165,22 @@ std::optional<std::size_t> ProfileManager::GetUserIndex(const ProfileInfo& user)
     return GetUserIndex(user.user_uuid);
 }
 
+/// Returns the first user profile seen based on username (which does not enforce uniqueness)
+std::optional<std::size_t> ProfileManager::GetUserIndex(const std::string& username) const {
+    const auto iter =
+        std::find_if(profiles.begin(), profiles.end(), [&username](const ProfileInfo& p) {
+            const std::string profile_username = Common::StringFromFixedZeroTerminatedBuffer(
+                reinterpret_cast<const char*>(p.username.data()), p.username.size());
+
+            return username.compare(profile_username) == 0;
+        });
+    if (iter == profiles.end()) {
+        return std::nullopt;
+    }
+
+    return static_cast<std::size_t>(std::distance(profiles.begin(), iter));
+}
+
 /// Returns the data structure used by the switch when GetProfileBase is called on acc:*
 bool ProfileManager::GetProfileBase(std::optional<std::size_t> index, ProfileBase& profile) const {
     if (!index || index >= MAX_USERS) {
diff --git a/src/core/hle/service/acc/profile_manager.h b/src/core/hle/service/acc/profile_manager.h
index e21863e64..f94157300 100644
--- a/src/core/hle/service/acc/profile_manager.h
+++ b/src/core/hle/service/acc/profile_manager.h
@@ -70,6 +70,7 @@ public:
     std::optional<Common::UUID> GetUser(std::size_t index) const;
     std::optional<std::size_t> GetUserIndex(const Common::UUID& uuid) const;
     std::optional<std::size_t> GetUserIndex(const ProfileInfo& user) const;
+    std::optional<std::size_t> GetUserIndex(const std::string& username) const;
     bool GetProfileBase(std::optional<std::size_t> index, ProfileBase& profile) const;
     bool GetProfileBase(Common::UUID uuid, ProfileBase& profile) const;
     bool GetProfileBase(const ProfileInfo& user, ProfileBase& profile) const;