fa0101bd60
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
356 lines
9.7 KiB
Go
356 lines
9.7 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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package descriptor
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import (
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"strings"
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)
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func (msg *DescriptorProto) GetMapFields() (*FieldDescriptorProto, *FieldDescriptorProto) {
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if !msg.GetOptions().GetMapEntry() {
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return nil, nil
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}
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return msg.GetField()[0], msg.GetField()[1]
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}
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func dotToUnderscore(r rune) rune {
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if r == '.' {
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return '_'
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}
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return r
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}
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func (field *FieldDescriptorProto) WireType() (wire int) {
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switch *field.Type {
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case FieldDescriptorProto_TYPE_DOUBLE:
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return 1
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case FieldDescriptorProto_TYPE_FLOAT:
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return 5
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case FieldDescriptorProto_TYPE_INT64:
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return 0
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case FieldDescriptorProto_TYPE_UINT64:
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return 0
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case FieldDescriptorProto_TYPE_INT32:
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return 0
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case FieldDescriptorProto_TYPE_UINT32:
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return 0
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case FieldDescriptorProto_TYPE_FIXED64:
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return 1
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case FieldDescriptorProto_TYPE_FIXED32:
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return 5
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case FieldDescriptorProto_TYPE_BOOL:
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return 0
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case FieldDescriptorProto_TYPE_STRING:
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return 2
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case FieldDescriptorProto_TYPE_GROUP:
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return 2
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case FieldDescriptorProto_TYPE_MESSAGE:
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return 2
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case FieldDescriptorProto_TYPE_BYTES:
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return 2
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case FieldDescriptorProto_TYPE_ENUM:
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return 0
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case FieldDescriptorProto_TYPE_SFIXED32:
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return 5
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case FieldDescriptorProto_TYPE_SFIXED64:
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return 1
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case FieldDescriptorProto_TYPE_SINT32:
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return 0
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case FieldDescriptorProto_TYPE_SINT64:
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return 0
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}
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panic("unreachable")
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}
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func (field *FieldDescriptorProto) GetKeyUint64() (x uint64) {
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packed := field.IsPacked()
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wireType := field.WireType()
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fieldNumber := field.GetNumber()
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if packed {
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wireType = 2
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}
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x = uint64(uint32(fieldNumber)<<3 | uint32(wireType))
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return x
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}
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func (field *FieldDescriptorProto) GetKey() []byte {
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x := field.GetKeyUint64()
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i := 0
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keybuf := make([]byte, 0)
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for i = 0; x > 127; i++ {
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keybuf = append(keybuf, 0x80|uint8(x&0x7F))
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x >>= 7
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}
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keybuf = append(keybuf, uint8(x))
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return keybuf
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}
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func (desc *FileDescriptorSet) GetField(packageName, messageName, fieldName string) *FieldDescriptorProto {
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msg := desc.GetMessage(packageName, messageName)
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if msg == nil {
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return nil
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}
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for _, field := range msg.GetField() {
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if field.GetName() == fieldName {
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return field
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}
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}
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return nil
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}
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func (file *FileDescriptorProto) GetMessage(typeName string) *DescriptorProto {
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for _, msg := range file.GetMessageType() {
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if msg.GetName() == typeName {
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return msg
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}
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nes := file.GetNestedMessage(msg, strings.TrimPrefix(typeName, msg.GetName()+"."))
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if nes != nil {
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return nes
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}
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}
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return nil
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}
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func (file *FileDescriptorProto) GetNestedMessage(msg *DescriptorProto, typeName string) *DescriptorProto {
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for _, nes := range msg.GetNestedType() {
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if nes.GetName() == typeName {
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return nes
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}
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res := file.GetNestedMessage(nes, strings.TrimPrefix(typeName, nes.GetName()+"."))
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if res != nil {
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return res
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}
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}
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return nil
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}
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func (desc *FileDescriptorSet) GetMessage(packageName string, typeName string) *DescriptorProto {
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for _, file := range desc.GetFile() {
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if strings.Map(dotToUnderscore, file.GetPackage()) != strings.Map(dotToUnderscore, packageName) {
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continue
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}
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for _, msg := range file.GetMessageType() {
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if msg.GetName() == typeName {
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return msg
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}
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}
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for _, msg := range file.GetMessageType() {
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for _, nes := range msg.GetNestedType() {
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if nes.GetName() == typeName {
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return nes
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}
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if msg.GetName()+"."+nes.GetName() == typeName {
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return nes
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}
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}
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}
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}
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return nil
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}
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func (desc *FileDescriptorSet) IsProto3(packageName string, typeName string) bool {
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for _, file := range desc.GetFile() {
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if strings.Map(dotToUnderscore, file.GetPackage()) != strings.Map(dotToUnderscore, packageName) {
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continue
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}
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for _, msg := range file.GetMessageType() {
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if msg.GetName() == typeName {
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return file.GetSyntax() == "proto3"
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}
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}
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for _, msg := range file.GetMessageType() {
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for _, nes := range msg.GetNestedType() {
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if nes.GetName() == typeName {
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return file.GetSyntax() == "proto3"
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}
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if msg.GetName()+"."+nes.GetName() == typeName {
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return file.GetSyntax() == "proto3"
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}
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}
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}
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}
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return false
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}
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func (msg *DescriptorProto) IsExtendable() bool {
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return len(msg.GetExtensionRange()) > 0
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}
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func (desc *FileDescriptorSet) FindExtension(packageName string, typeName string, fieldName string) (extPackageName string, field *FieldDescriptorProto) {
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parent := desc.GetMessage(packageName, typeName)
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if parent == nil {
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return "", nil
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}
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if !parent.IsExtendable() {
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return "", nil
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}
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extendee := "." + packageName + "." + typeName
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for _, file := range desc.GetFile() {
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for _, ext := range file.GetExtension() {
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if strings.Map(dotToUnderscore, file.GetPackage()) == strings.Map(dotToUnderscore, packageName) {
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if !(ext.GetExtendee() == typeName || ext.GetExtendee() == extendee) {
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continue
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}
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} else {
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if ext.GetExtendee() != extendee {
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continue
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}
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}
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if ext.GetName() == fieldName {
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return file.GetPackage(), ext
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}
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}
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}
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return "", nil
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}
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func (desc *FileDescriptorSet) FindExtensionByFieldNumber(packageName string, typeName string, fieldNum int32) (extPackageName string, field *FieldDescriptorProto) {
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parent := desc.GetMessage(packageName, typeName)
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if parent == nil {
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return "", nil
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}
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if !parent.IsExtendable() {
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return "", nil
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}
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extendee := "." + packageName + "." + typeName
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for _, file := range desc.GetFile() {
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for _, ext := range file.GetExtension() {
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if strings.Map(dotToUnderscore, file.GetPackage()) == strings.Map(dotToUnderscore, packageName) {
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if !(ext.GetExtendee() == typeName || ext.GetExtendee() == extendee) {
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continue
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}
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} else {
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if ext.GetExtendee() != extendee {
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continue
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}
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}
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if ext.GetNumber() == fieldNum {
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return file.GetPackage(), ext
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}
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}
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}
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return "", nil
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}
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func (desc *FileDescriptorSet) FindMessage(packageName string, typeName string, fieldName string) (msgPackageName string, msgName string) {
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parent := desc.GetMessage(packageName, typeName)
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if parent == nil {
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return "", ""
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}
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field := parent.GetFieldDescriptor(fieldName)
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if field == nil {
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var extPackageName string
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extPackageName, field = desc.FindExtension(packageName, typeName, fieldName)
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if field == nil {
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return "", ""
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}
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packageName = extPackageName
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}
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typeNames := strings.Split(field.GetTypeName(), ".")
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if len(typeNames) == 1 {
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msg := desc.GetMessage(packageName, typeName)
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if msg == nil {
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return "", ""
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}
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return packageName, msg.GetName()
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}
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if len(typeNames) > 2 {
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for i := 1; i < len(typeNames)-1; i++ {
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packageName = strings.Join(typeNames[1:len(typeNames)-i], ".")
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typeName = strings.Join(typeNames[len(typeNames)-i:], ".")
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msg := desc.GetMessage(packageName, typeName)
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if msg != nil {
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typeNames := strings.Split(msg.GetName(), ".")
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if len(typeNames) == 1 {
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return packageName, msg.GetName()
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}
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return strings.Join(typeNames[1:len(typeNames)-1], "."), typeNames[len(typeNames)-1]
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}
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}
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}
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return "", ""
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}
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func (msg *DescriptorProto) GetFieldDescriptor(fieldName string) *FieldDescriptorProto {
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for _, field := range msg.GetField() {
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if field.GetName() == fieldName {
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return field
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}
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}
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return nil
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}
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func (desc *FileDescriptorSet) GetEnum(packageName string, typeName string) *EnumDescriptorProto {
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for _, file := range desc.GetFile() {
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if strings.Map(dotToUnderscore, file.GetPackage()) != strings.Map(dotToUnderscore, packageName) {
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continue
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}
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for _, enum := range file.GetEnumType() {
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if enum.GetName() == typeName {
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return enum
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}
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}
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}
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return nil
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}
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func (f *FieldDescriptorProto) IsEnum() bool {
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return *f.Type == FieldDescriptorProto_TYPE_ENUM
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}
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func (f *FieldDescriptorProto) IsMessage() bool {
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return *f.Type == FieldDescriptorProto_TYPE_MESSAGE
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}
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func (f *FieldDescriptorProto) IsBytes() bool {
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return *f.Type == FieldDescriptorProto_TYPE_BYTES
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}
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func (f *FieldDescriptorProto) IsRepeated() bool {
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return f.Label != nil && *f.Label == FieldDescriptorProto_LABEL_REPEATED
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}
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func (f *FieldDescriptorProto) IsString() bool {
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return *f.Type == FieldDescriptorProto_TYPE_STRING
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}
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func (f *FieldDescriptorProto) IsBool() bool {
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return *f.Type == FieldDescriptorProto_TYPE_BOOL
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}
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func (f *FieldDescriptorProto) IsRequired() bool {
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return f.Label != nil && *f.Label == FieldDescriptorProto_LABEL_REQUIRED
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}
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func (f *FieldDescriptorProto) IsPacked() bool {
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return f.Options != nil && f.GetOptions().GetPacked()
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}
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func (m *DescriptorProto) HasExtension() bool {
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return len(m.ExtensionRange) > 0
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}
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