michael/mcstatus
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refactoring again, moved tcp client to pacakge

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Signed-off-by: Michael <michael.lindman@gmail.com>
This commit is contained in:
Michael 2020-12-15 21:13:50 +00:00
parent b33b6bee1d
commit 344de847c7
6 changed files with 171 additions and 88 deletions
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3
Makefile
View File

@ -24,5 +24,4 @@ clean:
proto:
protoc --go_out=/home/michael/go/src response.proto
.PHONY: run doc build debs update-debs fmt proto
.PHONY: run doc build debs update-debs fmt proto

58
client.go → client/client.go
View File

@ -1,4 +1,4 @@
package main
package client
import (
"bytes"
@ -11,50 +11,48 @@ import (
"github.com/golang/protobuf/jsonpb"
)
type client struct {
cmd *cmd
conn net.Conn
// Client TCP client
type Client struct {
Addr string
Port int
Version uint64
Conn net.Conn
}
func newConn(cmd *cmd) (*client, error) {
conn, err := net.Dial("tcp", cmd.addr+":"+strconv.Itoa(cmd.port))
// New client connection
func New(addr string, port int, ver uint64) (*Client, error) {
conn, err := net.Dial("tcp", addr+":"+strconv.Itoa(port))
if err != nil {
return nil, err
}
return &client{
cmd: cmd,
conn: conn,
return &Client{
Addr: addr,
Port: port,
Version: ver,
Conn: conn,
}, nil
}
func (client *client) write() error {
if err := client.conn.SetWriteDeadline(time.Now().Add(10 * time.Second)); err != nil {
client.conn.Close()
func (client *Client) write() error {
if err := client.Conn.SetWriteDeadline(time.Now().Add(10 * time.Second)); err != nil {
return err
}
client.conn.Write(handshake(client.cmd.addr, client.cmd.port, client.cmd.version))
client.conn.Write([]byte{0x01, 0x00})
client.Conn.Write(handshake(client.Addr, client.Port, client.Version))
return nil
}
func (client *client) read() (*pb.Response, error) {
func (client *Client) read() (*pb.Response, error) {
var response pb.Response
if err := client.conn.SetReadDeadline(time.Now().Add(10 * time.Second)); err != nil {
client.conn.Close()
return nil, err
}
recvBuf := make([]byte, 512)
n, err := client.conn.Read(recvBuf)
buf := make([]byte, 1024)
n, err := client.Conn.Read(buf)
if err != nil {
if netErr, ok := err.(net.Error); ok && netErr.Timeout() {
client.conn.Close()
return nil, err
}
client.conn.Close()
return nil, err
}
b := bytes.Split(recvBuf[:n], []byte("{"))
ne := bytes.SplitAfterN(recvBuf[:n], b[0], 2)
b := bytes.Split(buf[:n], []byte("{"))
ne := bytes.SplitAfterN(buf[:n], b[0], 2)
trim := bytes.TrimSuffix(ne[1], []byte("\x00"))
js := &jsonpb.Unmarshaler{AllowUnknownFields: true}
if err := js.Unmarshal(bytes.NewBuffer(trim), &response); err != nil {
@ -63,15 +61,6 @@ func (client *client) read() (*pb.Response, error) {
return &response, nil
}
func (client *client) pingServer() time.Duration {
ping := make([]byte, 1)
start := time.Now()
client.conn.Write([]byte{0x01, 0x00})
_, _ = client.conn.Read(ping[:])
diff := time.Now().Sub(start)
return diff
}
func packetlength(b ...[]byte) (length int) {
for _, bytes := range b {
length += len(bytes)
@ -97,5 +86,6 @@ func handshake(addr string, port int, ver uint64) []byte {
handshake.WriteString(addr)
handshake.Write(p)
handshake.Write(state)
handshake.Write([]byte{0x01, 0x00})
return handshake.Bytes()
}

31
client/status.go Normal file
View File

@ -0,0 +1,31 @@
package client
import (
"time"
"git.0cd.xyz/michael/mcstatus/pb"
)
// GetStatus gets minecraft server status
func (client *Client) GetStatus() (*pb.Response, error) {
for {
if err := client.write(); err != nil {
return nil, err
}
resp, err := client.read()
if err != nil {
return nil, err
}
return resp, nil
}
}
// PingServer pings Minecraft server
func (client *Client) PingServer() time.Duration {
ping := make([]byte, 1)
start := time.Now()
client.Conn.Write([]byte{0x01, 0x00})
_, _ = client.Conn.Read(ping[:])
diff := time.Now().Sub(start)
return diff
}

40
main.go
View File

@ -4,6 +4,8 @@ import (
"encoding/json"
"fmt"
"os"
"git.0cd.xyz/michael/mcstatus/client"
)
func main() {
@ -15,52 +17,40 @@ func main() {
func run() error {
cmd := ui()
conn, err := newConn(cmd)
client, err := client.New(cmd.addr, cmd.port, cmd.version)
if err != nil {
return err
}
defer client.Conn.Close()
for {
if err := conn.write(); err != nil {
return err
}
resp, err := conn.read()
status, err := client.GetStatus()
if err != nil {
return err
}
if cmd.ping {
fmt.Printf("Ping: %+v\n", conn.pingServer())
if err = conn.conn.Close(); err != nil {
conn.conn.Close()
return err
}
fmt.Printf("Ping: %+v\n", client.PingServer())
return nil
}
if cmd.raw {
json, err := json.MarshalIndent(&resp, "", " ")
json, err := json.MarshalIndent(&status, "", " ")
if err != nil {
conn.conn.Close()
return err
}
fmt.Printf("%s\n", string(json))
conn.conn.Close()
return err
return nil
}
fmt.Printf("Name: %s\nPlayers: %d/%d\nVersion: %s\n",
resp.Description.Text,
resp.Players.Online,
resp.Players.Max,
resp.Version.Name)
if resp.Players.Online >= 1 {
status.Description.Text,
status.Players.Online,
status.Players.Max,
status.Version.Name)
if status.Players.Online >= 1 {
fmt.Println("Online:")
for _, player := range resp.Players.Sample {
for _, player := range status.Players.Sample {
fmt.Printf("\t%s\n", player.Name)
}
}
fmt.Printf("Ping: %+v\n", conn.pingServer())
if err = conn.conn.Close(); err != nil {
conn.conn.Close()
return err
}
fmt.Printf("Ping: %+v\n", client.PingServer())
return nil
}
}

121
pb/response.pb.go
View File

@ -1,13 +1,12 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.25.0-devel
// protoc v3.7.1
// protoc v3.14.0
// source: response.proto
package pb
import (
proto "github.com/golang/protobuf/proto"
protoreflect "google.golang.org/protobuf/reflect/protoreflect"
protoimpl "google.golang.org/protobuf/runtime/protoimpl"
reflect "reflect"
@ -21,10 +20,6 @@ const (
_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
)
// This is a compile-time assertion that a sufficiently up-to-date version
// of the legacy proto package is being used.
const _ = proto.ProtoPackageIsVersion4
type Response struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@ -219,7 +214,8 @@ type Response_Description struct {
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
Text string `protobuf:"bytes,1,opt,name=text,proto3" json:"text,omitempty"`
Extra []*Response_Description_Extra `protobuf:"bytes,1,rep,name=extra,proto3" json:"extra,omitempty"`
Text string `protobuf:"bytes,2,opt,name=text,proto3" json:"text,omitempty"`
}
func (x *Response_Description) Reset() {
@ -254,6 +250,13 @@ func (*Response_Description) Descriptor() ([]byte, []int) {
return file_response_proto_rawDescGZIP(), []int{0, 2}
}
func (x *Response_Description) GetExtra() []*Response_Description_Extra {
if x != nil {
return x.Extra
}
return nil
}
func (x *Response_Description) GetText() string {
if x != nil {
return x.Text
@ -316,11 +319,58 @@ func (x *Response_Players_Sample) GetId() string {
return ""
}
type Response_Description_Extra struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
Text string `protobuf:"bytes,1,opt,name=text,proto3" json:"text,omitempty"`
}
func (x *Response_Description_Extra) Reset() {
*x = Response_Description_Extra{}
if protoimpl.UnsafeEnabled {
mi := &file_response_proto_msgTypes[5]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *Response_Description_Extra) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*Response_Description_Extra) ProtoMessage() {}
func (x *Response_Description_Extra) ProtoReflect() protoreflect.Message {
mi := &file_response_proto_msgTypes[5]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use Response_Description_Extra.ProtoReflect.Descriptor instead.
func (*Response_Description_Extra) Descriptor() ([]byte, []int) {
return file_response_proto_rawDescGZIP(), []int{0, 2, 0}
}
func (x *Response_Description_Extra) GetText() string {
if x != nil {
return x.Text
}
return ""
}
var File_response_proto protoreflect.FileDescriptor
var file_response_proto_rawDesc = []byte{
0x0a, 0x0e, 0x72, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f,
0x12, 0x02, 0x70, 0x62, 0x22, 0xb7, 0x03, 0x0a, 0x08, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73,
0x12, 0x02, 0x70, 0x62, 0x22, 0x8a, 0x04, 0x0a, 0x08, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73,
0x65, 0x12, 0x2e, 0x0a, 0x07, 0x76, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x18, 0x01, 0x20, 0x01,
0x28, 0x0b, 0x32, 0x14, 0x2e, 0x70, 0x62, 0x2e, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65,
0x2e, 0x56, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x52, 0x07, 0x76, 0x65, 0x72, 0x73, 0x69, 0x6f,
@ -345,12 +395,17 @@ var file_response_proto_rawDesc = []byte{
0x61, 0x6d, 0x70, 0x6c, 0x65, 0x52, 0x06, 0x73, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x1a, 0x2c, 0x0a,
0x06, 0x53, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x12, 0x12, 0x0a, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x18,
0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x12, 0x0e, 0x0a, 0x02, 0x69,
0x64, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x02, 0x69, 0x64, 0x1a, 0x21, 0x0a, 0x0b, 0x44,
0x65, 0x73, 0x63, 0x72, 0x69, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x12, 0x0a, 0x04, 0x74, 0x65,
0x78, 0x74, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x74, 0x65, 0x78, 0x74, 0x42, 0x21,
0x5a, 0x1f, 0x67, 0x69, 0x74, 0x2e, 0x30, 0x63, 0x64, 0x2e, 0x78, 0x79, 0x7a, 0x2f, 0x6d, 0x69,
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0x74, 0x42, 0x21, 0x5a, 0x1f, 0x67, 0x69, 0x74, 0x2e, 0x30, 0x63, 0x64, 0x2e, 0x78, 0x79, 0x7a,
0x2f, 0x6d, 0x69, 0x63, 0x68, 0x61, 0x65, 0x6c, 0x2f, 0x6d, 0x63, 0x73, 0x74, 0x61, 0x74, 0x75,
0x73, 0x2f, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
}
var (
@ -365,24 +420,26 @@ func file_response_proto_rawDescGZIP() []byte {
return file_response_proto_rawDescData
}
var file_response_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
var file_response_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
var file_response_proto_goTypes = []interface{}{
(*Response)(nil), // 0: pb.Response
(*Response_Version)(nil), // 1: pb.Response.Version
(*Response_Players)(nil), // 2: pb.Response.Players
(*Response_Description)(nil), // 3: pb.Response.Description
(*Response_Players_Sample)(nil), // 4: pb.Response.Players.Sample
(*Response)(nil), // 0: pb.Response
(*Response_Version)(nil), // 1: pb.Response.Version
(*Response_Players)(nil), // 2: pb.Response.Players
(*Response_Description)(nil), // 3: pb.Response.Description
(*Response_Players_Sample)(nil), // 4: pb.Response.Players.Sample
(*Response_Description_Extra)(nil), // 5: pb.Response.Description.Extra
}
var file_response_proto_depIdxs = []int32{
1, // 0: pb.Response.version:type_name -> pb.Response.Version
2, // 1: pb.Response.players:type_name -> pb.Response.Players
3, // 2: pb.Response.description:type_name -> pb.Response.Description
4, // 3: pb.Response.Players.sample:type_name -> pb.Response.Players.Sample
4, // [4:4] is the sub-list for method output_type
4, // [4:4] is the sub-list for method input_type
4, // [4:4] is the sub-list for extension type_name
4, // [4:4] is the sub-list for extension extendee
0, // [0:4] is the sub-list for field type_name
5, // 4: pb.Response.Description.extra:type_name -> pb.Response.Description.Extra
5, // [5:5] is the sub-list for method output_type
5, // [5:5] is the sub-list for method input_type
5, // [5:5] is the sub-list for extension type_name
5, // [5:5] is the sub-list for extension extendee
0, // [0:5] is the sub-list for field type_name
}
func init() { file_response_proto_init() }
@ -451,6 +508,18 @@ func file_response_proto_init() {
return nil
}
}
file_response_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*Response_Description_Extra); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
}
type x struct{}
out := protoimpl.TypeBuilder{
@ -458,7 +527,7 @@ func file_response_proto_init() {
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_response_proto_rawDesc,
NumEnums: 0,
NumMessages: 5,
NumMessages: 6,
NumExtensions: 0,
NumServices: 0,
},

6
response.proto
View File

@ -21,7 +21,11 @@ message Response {
}
Players players = 2;
message Description {
string text = 1;
message Extra {
string text = 1;
}
repeated Extra extra = 1;
string text = 2;
}
Description description = 3;
string favicon = 4;