justin/openttd-admin
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Make it easier to extract strings, and pull more data out of the welcome packet.

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This commit is contained in:
Justin Hawkins 2020-11-22 12:53:23 +10:30
parent 207d5b32e0
commit 3e8ccf3df1
1 changed files with 43 additions and 14 deletions
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57
pkg/admin/admin.go
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@ -20,7 +20,15 @@ import (
// OpenTTDServer - an object representing the server connection
type OpenTTDServer struct {
connection net.Conn
serverName string
ServerName string
ServerVersion string
ServerDedicated bool // is this a dedicated server?
MapName string
MapSeed uint32
MapLandscape byte
MapX uint16
MapY uint16
rconDaily []string
rconMonthly []string
rconYearly []string
@ -296,8 +304,28 @@ SocketLoop:
// fmt.Print(" - Got a adminPacketServerPROTOCOL packet\n")
} else if packetType == adminPacketServerWELCOME {
log.Println("received welcome packet")
server.serverName = extractString(packetData[0:])
// fmt.Printf(" * server name: %s\n", serverName)
fmt.Printf("packet: %+v?\n", packetData[:])
var next int
server.ServerName, next = extractString(packetData[:], 0)
server.ServerVersion, next = extractString(packetData[:], next)
if (packetData[next] == 0000) {
server.ServerDedicated = false
} else if (packetData[next] == 0001) {
server.ServerDedicated = true
} else {
fmt.Printf("not bool %v?\n", packetData[next])
}
server.MapName, next = extractString(packetData[:], next+1)
server.MapSeed = binary.LittleEndian.Uint32(packetData[next:next+4])
server.MapLandscape = packetData[next+4]
// todo
// p->Send_uint32(ConvertYMDToDate(_settings_game.game_creation.starting_year, 0, 1));
server.MapX = binary.LittleEndian.Uint16(packetData[next+9:next+11])
server.MapY = binary.LittleEndian.Uint16(packetData[next+11:next+13])
log.Printf("server: %s version: %s dedicated: %v map: %s %d/%d size\n", server.ServerName, server.ServerVersion, server.ServerDedicated, server.MapName, server.MapX, server.MapY)
// fmt.Printf(" * server name: %s\n", ServerName)
} else if packetType == adminPacketServerSHUTDOWN {
log.Println("server shutting down - will try to reconnect")
server.connection = nil
@ -318,16 +346,17 @@ SocketLoop:
chatAction := int8(packetData[0])
chatDestType := int8(packetData[1])
chatClientID := binary.LittleEndian.Uint32(packetData[2:6])
chatMsg := extractString(packetData[6:])
// var chatMsg string
chatMsg, _ := extractString(packetData[:], 6)
chatData := binary.LittleEndian.Uint64(packetData[len(packetData)-8:])
log.Printf("chat message: action %v desttype %v, client id %v msg %v data %v\n", chatAction, chatDestType, chatClientID, string(chatMsg), chatData)
} else if packetType == adminPacketServerRCON {
colour := binary.LittleEndian.Uint16(packetData[0:2])
string := extractString(packetData[2:])
log.Printf("rcon: colour %v : %s\n", colour, string)
rconRecvString, _ := extractString(packetData[:], 2)
log.Printf("rcon: colour %v : %s\n", colour, rconRecvString)
} else if packetType == adminPacketServerRCON_END {
string := extractString(packetData[0:])
log.Printf("rcon end : %s\n", string)
rconEndRecvString, _ := extractString(packetData[:], 0)
log.Printf("rcon end : %s\n", rconEndRecvString)
} else {
log.Printf("unknown packet received from server: %v [%v]\n", string(packetData), packetData)
}
@ -348,13 +377,13 @@ SocketLoop:
}
func extractString(bytes []byte) string {
var str []byte
for i := 0; i <= len(bytes); i++ {
func extractString(bytes []byte, start int) (string, int) {
var buildString []byte
for i := start; i <= len(bytes); i++ {
if bytes[i] == 0 {
return string(str)
return string(buildString), i+1
}
str = append(str, bytes[i])
buildString = append(buildString, bytes[i])
}
return ""
return "", -1
}