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
198 lines
5.8 KiB
Go
198 lines
5.8 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 embedcheck plugin is used to check whether embed is not used incorrectly.
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For instance:
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An embedded message has a generated string method, but the is a member of a message which does not.
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This causes a warning.
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An error is caused by a namespace conflict.
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It is enabled by the following extensions:
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- embed
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- embed_all
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For incorrect usage of embed with tests see:
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github.com/gogo/protobuf/test/embedconflict
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*/
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package embedcheck
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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 "embedcheck"
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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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var overwriters []map[string]gogoproto.EnableFunc = []map[string]gogoproto.EnableFunc{
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{
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"stringer": gogoproto.IsStringer,
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},
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{
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"gostring": gogoproto.HasGoString,
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},
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{
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"equal": gogoproto.HasEqual,
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},
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{
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"verboseequal": gogoproto.HasVerboseEqual,
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},
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{
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"size": gogoproto.IsSizer,
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"protosizer": gogoproto.IsProtoSizer,
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},
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{
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"unmarshaler": gogoproto.IsUnmarshaler,
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"unsafe_unmarshaler": gogoproto.IsUnsafeUnmarshaler,
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},
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{
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"marshaler": gogoproto.IsMarshaler,
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"unsafe_marshaler": gogoproto.IsUnsafeMarshaler,
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},
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}
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func (p *plugin) Generate(file *generator.FileDescriptor) {
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for _, msg := range file.Messages() {
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for _, os := range overwriters {
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possible := true
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for _, overwriter := range os {
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if overwriter(file.FileDescriptorProto, msg.DescriptorProto) {
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possible = false
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}
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}
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if possible {
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p.checkOverwrite(msg, os)
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}
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}
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p.checkNameSpace(msg)
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for _, field := range msg.GetField() {
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if gogoproto.IsEmbed(field) && gogoproto.IsCustomName(field) {
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fmt.Fprintf(os.Stderr, "ERROR: field %v with custom name %v cannot be embedded", *field.Name, gogoproto.GetCustomName(field))
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os.Exit(1)
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}
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}
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p.checkRepeated(msg)
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}
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for _, e := range file.GetExtension() {
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if gogoproto.IsEmbed(e) {
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fmt.Fprintf(os.Stderr, "ERROR: extended field %v cannot be embedded", 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) checkNameSpace(message *generator.Descriptor) map[string]bool {
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ccTypeName := generator.CamelCaseSlice(message.TypeName())
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names := make(map[string]bool)
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for _, field := range message.Field {
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fieldname := generator.CamelCase(*field.Name)
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if field.IsMessage() && gogoproto.IsEmbed(field) {
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desc := p.ObjectNamed(field.GetTypeName())
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moreNames := p.checkNameSpace(desc.(*generator.Descriptor))
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for another := range moreNames {
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if names[another] {
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fmt.Fprintf(os.Stderr, "ERROR: duplicate embedded fieldname %v in type %v\n", fieldname, ccTypeName)
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os.Exit(1)
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}
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names[another] = true
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}
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} else {
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if names[fieldname] {
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fmt.Fprintf(os.Stderr, "ERROR: duplicate embedded fieldname %v in type %v\n", fieldname, ccTypeName)
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os.Exit(1)
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}
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names[fieldname] = true
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}
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}
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return names
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}
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func (p *plugin) checkOverwrite(message *generator.Descriptor, enablers map[string]gogoproto.EnableFunc) {
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ccTypeName := generator.CamelCaseSlice(message.TypeName())
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names := []string{}
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for name := range enablers {
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names = append(names, name)
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}
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for _, field := range message.Field {
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if field.IsMessage() && gogoproto.IsEmbed(field) {
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fieldname := generator.CamelCase(*field.Name)
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desc := p.ObjectNamed(field.GetTypeName())
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msg := desc.(*generator.Descriptor)
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for errStr, enabled := range enablers {
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if enabled(msg.File(), msg.DescriptorProto) {
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fmt.Fprintf(os.Stderr, "WARNING: found non-%v %v with embedded %v %v\n", names, ccTypeName, errStr, fieldname)
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}
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}
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p.checkOverwrite(msg, enablers)
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}
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}
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}
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func (p *plugin) checkRepeated(message *generator.Descriptor) {
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ccTypeName := generator.CamelCaseSlice(message.TypeName())
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for _, field := range message.Field {
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if !gogoproto.IsEmbed(field) {
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continue
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}
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if field.IsBytes() {
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fieldname := generator.CamelCase(*field.Name)
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fmt.Fprintf(os.Stderr, "ERROR: found embedded bytes field %s in message %s\n", fieldname, ccTypeName)
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os.Exit(1)
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}
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if !field.IsRepeated() {
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continue
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}
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fieldname := generator.CamelCase(*field.Name)
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fmt.Fprintf(os.Stderr, "ERROR: found repeated embedded field %s in message %s\n", fieldname, ccTypeName)
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os.Exit(1)
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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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