This changes the BEP protocol to use protocol buffer serialization instead of XDR, and therefore also the database format. The local discovery protocol is also updated to be protocol buffer format. GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3276 LGTM: AudriusButkevicius
132 lines
4.9 KiB
Go
132 lines
4.9 KiB
Go
// Copyright (c) 2013, Vastech SA (PTY) LTD. All rights reserved.
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// http://github.com/gogo/protobuf
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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/*
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The defaultcheck plugin is used to check whether nullable is not used incorrectly.
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For instance:
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An error is caused if a nullable field:
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- has a default value,
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- is an enum which does not start at zero,
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- is used for an extension,
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- is used for a native proto3 type,
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- is used for a repeated native type.
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An error is also caused if a field with a default value is used in a message:
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- which is a face.
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- without getters.
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It is enabled by the following extensions:
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- nullable
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For incorrect usage of nullable with tests see:
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github.com/gogo/protobuf/test/nullableconflict
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*/
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package defaultcheck
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import (
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"fmt"
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"github.com/gogo/protobuf/gogoproto"
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"github.com/gogo/protobuf/protoc-gen-gogo/generator"
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"os"
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)
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type plugin struct {
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*generator.Generator
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}
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func NewPlugin() *plugin {
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return &plugin{}
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}
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func (p *plugin) Name() string {
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return "defaultcheck"
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}
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func (p *plugin) Init(g *generator.Generator) {
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p.Generator = g
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}
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func (p *plugin) Generate(file *generator.FileDescriptor) {
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proto3 := gogoproto.IsProto3(file.FileDescriptorProto)
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for _, msg := range file.Messages() {
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getters := gogoproto.HasGoGetters(file.FileDescriptorProto, msg.DescriptorProto)
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face := gogoproto.IsFace(file.FileDescriptorProto, msg.DescriptorProto)
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for _, field := range msg.GetField() {
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if len(field.GetDefaultValue()) > 0 {
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if !getters {
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fmt.Fprintf(os.Stderr, "ERROR: field %v.%v cannot have a default value and not have a getter method", generator.CamelCase(*msg.Name), generator.CamelCase(*field.Name))
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os.Exit(1)
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}
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if face {
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fmt.Fprintf(os.Stderr, "ERROR: field %v.%v cannot have a default value be in a face", generator.CamelCase(*msg.Name), generator.CamelCase(*field.Name))
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os.Exit(1)
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}
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}
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if gogoproto.IsNullable(field) {
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continue
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}
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if len(field.GetDefaultValue()) > 0 {
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fmt.Fprintf(os.Stderr, "ERROR: field %v.%v cannot be non-nullable and have a default value", generator.CamelCase(*msg.Name), generator.CamelCase(*field.Name))
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os.Exit(1)
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}
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if !field.IsMessage() && !gogoproto.IsCustomType(field) {
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if field.IsRepeated() {
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fmt.Fprintf(os.Stderr, "WARNING: field %v.%v is a repeated non-nullable native type, nullable=false has no effect\n", generator.CamelCase(*msg.Name), generator.CamelCase(*field.Name))
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} else if proto3 {
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fmt.Fprintf(os.Stderr, "ERROR: field %v.%v is a native type and in proto3 syntax with nullable=false there exists conflicting implementations when encoding zero values", generator.CamelCase(*msg.Name), generator.CamelCase(*field.Name))
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os.Exit(1)
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}
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if field.IsBytes() {
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fmt.Fprintf(os.Stderr, "WARNING: field %v.%v is a non-nullable bytes type, nullable=false has no effect\n", generator.CamelCase(*msg.Name), generator.CamelCase(*field.Name))
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}
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}
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if !field.IsEnum() {
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continue
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}
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enum := p.ObjectNamed(field.GetTypeName()).(*generator.EnumDescriptor)
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if len(enum.Value) == 0 || enum.Value[0].GetNumber() != 0 {
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fmt.Fprintf(os.Stderr, "ERROR: field %v.%v cannot be non-nullable and be an enum type %v which does not start with zero", generator.CamelCase(*msg.Name), generator.CamelCase(*field.Name), enum.GetName())
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os.Exit(1)
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}
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}
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}
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for _, e := range file.GetExtension() {
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if !gogoproto.IsNullable(e) {
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fmt.Fprintf(os.Stderr, "ERROR: extended field %v cannot be nullable %v", generator.CamelCase(e.GetName()), generator.CamelCase(*e.Name))
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os.Exit(1)
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}
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}
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}
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func (p *plugin) GenerateImports(*generator.FileDescriptor) {}
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func init() {
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generator.RegisterPlugin(NewPlugin())
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}
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