add vendoring

vendor/maunium.net/go/mautrix/bridge/bridgeconfig/permissions.go

@@ -0,0 +1,71 @@
+// Copyright (c) 2022 Tulir Asokan
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package bridgeconfig
+
+import (
+	"strconv"
+	"strings"
+
+	"maunium.net/go/mautrix/id"
+)
+
+type PermissionConfig map[string]PermissionLevel
+
+type PermissionLevel int
+
+const (
+	PermissionLevelBlock PermissionLevel = 0
+	PermissionLevelRelay PermissionLevel = 5
+	PermissionLevelUser  PermissionLevel = 10
+	PermissionLevelAdmin PermissionLevel = 100
+)
+
+var namesToLevels = map[string]PermissionLevel{
+	"block": PermissionLevelBlock,
+	"relay": PermissionLevelRelay,
+	"user":  PermissionLevelUser,
+	"admin": PermissionLevelAdmin,
+}
+
+func RegisterPermissionLevel(name string, level PermissionLevel) {
+	namesToLevels[name] = level
+}
+
+func (pc *PermissionConfig) UnmarshalYAML(unmarshal func(interface{}) error) error {
+	rawPC := make(map[string]string)
+	err := unmarshal(&rawPC)
+	if err != nil {
+		return err
+	}
+
+	if *pc == nil {
+		*pc = make(map[string]PermissionLevel)
+	}
+	for key, value := range rawPC {
+		level, ok := namesToLevels[strings.ToLower(value)]
+		if ok {
+			(*pc)[key] = level
+		} else if val, err := strconv.Atoi(value); err == nil {
+			(*pc)[key] = PermissionLevel(val)
+		} else {
+			(*pc)[key] = PermissionLevelBlock
+		}
+	}
+	return nil
+}
+
+func (pc PermissionConfig) Get(userID id.UserID) PermissionLevel {
+	if level, ok := pc[string(userID)]; ok {
+		return level
+	} else if level, ok = pc[userID.Homeserver()]; len(userID.Homeserver()) > 0 && ok {
+		return level
+	} else if level, ok = pc["*"]; ok {
+		return level
+	} else {
+		return PermissionLevelBlock
+	}
+}