IPMSG协议中文Word文档格式.docx
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IPMSG协议中文Word文档格式.docx
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IPMSG_SENDMSG
发送消息
IPMSG_RECVMSG
通报收到消息
IPMSG_GETFILEDATA
请求通过TCP传输文件
IPMSG_RELEASEFILES
停止接收文件
IPMSG_GETDIRFILES
请求传输文件夹
2)
选项位(32位命令字的高24位)
IPMSG_SENDCHECKOPT
传送检查(需要对方返回确认信息)
IPMSG_FILEATTACHOPT
传送文件选项
3)
附件类型命令(文件类型命令字的低8位)
IPMSG_FILE_REGULAR
普通文件
IPMSG_FILE_DIR
目录文件
IPMSG_FILE_RETPARENT
返回上一级目录
2、
数据包格式(使用字符串):
数据包格式(版本1的格式)
版本号
(1):
包编号:
发送者姓名:
发送者主机名:
命令字:
附加信息
举例如下
“1:
100:
shirouzu:
Jupiter:
32:
Hello”
3、
数据包处理总述:
用户识别
当IPMSG启动时,命令IPMSG_BR_ENTRY被广播到网络中,向所有在线的用户提示一个新用户的到达(即表示“我来了”);
所有在线用户将把该新上线用户添加到自己的用户列表中,并向该新上线用户发送IPMSG_ANSENTRY命令(即表示“我在线”);
该新上线用户接收到IPMSG_ANSENTRY命令后即将在线用户添加到自己的用户列表中。
收发消息
使用IPMSG_SENDMSG命令发送消息,消息内容添加在附加信息中;
在接收消息时,如果对方要求回信确认(IPMSG_SENDCHECKOPT位打开),则需发送IPMSG_RECVMSG命令并将对方发送的数据包的编号放在附加信息中一同发送至发送消息方
附加文件的扩充(添加于第9版)
带有IPMSG_FILEATTACHOPT位的IPMSG_SENDMSG命令可用来传输文件,文件属性及内容添加在附加信息中,文件内容添加在消息内容后并以’\0’与之分隔开。
传输文件时以下信息将被添加到消息内容之后(包括格式):
文件序号:
文件名:
大小(单位:
字节):
最后修改时间:
文件属性[:
附加属性=val1[,val2…][:
附加信息=…]]:
\a:
文件序号…
(文件大小、最后修改时间和文件属性为十六进制数,如果文件名中包含’:
’则使用“:
:
”代替)。
接收端开始接收文件时,请求传输文件命令IPMSG_GETFILEDATA将发送到发送端的TCP端口(和UDP的发送端口相同),并将发送端发送的包编号:
偏移量(全为十六进制格式)写到附加信息区一同发送,文件发送端接收到该请求信息并进行校验正确后即开始发送文件(不使用任何格式,亦不进行加密)。
当接收端接收到目录文件时,将发送附加信息区为发送端发送的包编号:
偏移量(全为十六进制格式)的IPMSG_GETDIRFILES命令,以用来请求传输目录文件;
发送端则将头信息长度:
文件大小:
文件属性:
文件内容添加到附加信息区(除了文件名和文件内容外,其余皆为十六进制),头信息长度是从头信息长度开始到文件内容前的‘:
’分割符为止的字符个数。
当文件属性为IPMSG_FILE_DIR时,IPMsg能够自动识别其为目录,下一个文件的数据在该目录之后。
当文件属性为IPMSG_FILE_RETPARENT时,IPMsg识别其动作为返回上一级目录,在这种情况下,文件名为‘.’其属性为当前目录的值。
附IPMSG协议英文版:
QUOTE:
OriginalipmsgprotocolspecificationiswritteninJapanese.
ThisdocumentwastranslatedbyMr.Kanazawa.
Thisdocumentisnotverifiedyet.
----------------------------------------------------------------------
IPMessengercommunicationprotocol(Draft-9)
Modified2003/01/14
H.Shirouzu
AboutIPMessenger
ThisisaSend/ReceivemessageserviceusingtheTCP/UDPPort.
Characteristics
IPMessengercanbeinstalledinanyOSifTCP/IPisusedonyourmachine.
Dynamicmemberrecognitioncanbedonewithinyournetworkorspecifiednetwork.
YoucanexchangemessagesbetweenallIPMsgmembers.
Functiondescription
UseTCP/UDPport(default:
2425).Seethefollowingdescriptions
(MessageSend/Receive:
UDP,FileSend/Receive:
TCP)
1.Command
1)Commandfunctions(Low8bitsfromcommandnumber32bits)
NoOperation
Entrytoservice(Start-upwithaBroadcastcommand)
Exitfromservice(EndwithaBroadcastcommand)
Notifyanewentry
IPMSG_BR_ABSENCE
Changeabsencemode
IPMSG_BR_ISGETLIST
Searchvalidsendinghostmembers
IPMSG_OKGETLIST
Hostlistsendingnotice
IPMSG_GETLIST
Hostlistsendingrequest
IPMSG_ANSLIST
Hostlistsending
Messagetransmission
Messagereceivingcheck
IPMSG_READMSG
Messageopennotice
IPMSG_DELMSG
Messagediscardednotice
IPMSG_ANSREADMSG
Messageopenconfirmationnotice(addedfromversion-8)
FileTransferrequestbyTCP
Discardattachmentfile
Attachmenthierarchicalfilerequest
IPMSG_GETINFO
GetIPMSGversioninfo.
IPMSG_SENDINFO
SendIPMSGversioninfo.
IPMSG_GETABSENCEINFO
Getabsencesentence
IPMSG_SENDABSENCEINFO
Sendabsencesentence
IPMSG_GETPUBKEY
RSAPublicKeyAcquisition
IPMSG_ANSPUBKEY
RSAPublicKeyResponse
2)Optionflag(High24bitsfromcommandnumber32bits)
IPMSG_ABSENCEOPT
Absencemode(Memberrecognitioncommand)
IPMSG_SERVEROPT
Server(Reserved)
IPMSG_DIALUPOPT
Sendindividualmemberrecognitioncommand
IPMSG_SENDCHECKOPT
Transmissioncheck
IPMSG_SECRETOPT
Sealedmessage
IPMSG_READCHECKOPT
Sealedmessagecheck(addedfromver8)
IPMSG_PASSWORDOPT
Lock
IPMSG_BROADCASTOPT
Broadcastmessage
IPMSG_MULTICASTOPT
Multi-cast(Multiplecastsselection)
IPMSG_NEWMUTIOPT
Newversionmulti-cast(reserved)
IPMSG_AUTORETOPT
Automaticresponse(Ping-pongprotection)
IPMSG_NOLOGOPT
Nologfiles
IPMSG_NOADDLISTOPT
NoticetothemembersoutsideofBR_ENTRY
IPMSG_FILEATTACHOPT
Fileattachment
IPMSG_ENCRYPTOPT
Code
IPMSG_NOPOPUPOPT
(Nolongervalid)
IPMSG_RETRYOPT
Re-sendflag(UsewhenacquiringHOSTLIST)
3)Extendedcodeflag(hexformatcombination)
IPMSG_RSA_512
IPMSG_RSA_1024
IPMSG_RSA_2048
IPMSG_RC2_40
IPMSG_RC2_128
IPMSG_RC2_256
IPMSG_BLOWFISH_128
IPMSG_BLOWFISH_256
IPMSG_SIGN_MD5
4)Extendedfilesforattachment(fileattrlow8bits)
IPMSG_FILE_REGULAR
IPMSG_FILE_DIR
IPMSG_FILE_RETPARENT
IPMSG_FILE_SYMLINK
IPMSG_FILE_CDEV
IPMSG_FILE_BDEV
IPMSG_FILE_FIFO
IPMSG_FILE_RESFORK
5)Attachmentfileextendedattribute(fileattrhigh24bits)
IPMSG_FILE_RONLYOPT
IPMSG_FILE_HIDDENOPT
IPMSG_FILE_EXHIDDENOPT
IPMSG_FILE_ARCHIVEOPT
IPMSG_FILE_SYSTEMOPT
6)Extendedfileattributeforattachmentfile
IPMSG_FILE_UID
IPMSG_FILE_USERNAME
IPMSG_FILE_GID
IPMSG_FILE_GROUPNAME
IPMSG_FILE_PERM
IPMSG_FILE_MAJORNO
IPMSG_FILE_MINORNO
IPMSG_FILE_CTIME
IPMSG_FILE_MTIME
IPMSG_FILE_ATIME
IPMSG_FILE_CREATETIME
IPMSG_FILE_CREATOR
IPMSG_FILE_FILETYPE
IPMSG_FILE_FINDERINFO
IPMSG_FILE_ACL
IPMSG_FILE_ALIASFNAME
IPMSG_FILE_UNICODEFNAME
2.Commandformat(Useallcharacterstrings)
1)Command(Formatversion-1)
Ver
(1):
PacketNo:
SenderName:
SenderHost:
CommandNo:
AdditionalSection
2)AnexampleforMessageSend/Receivebyusingthecurrentcommandformat
"
1:
jupiter:
Hello"
3.Commandprocessoverview
1)Memberrecognition
AnIPMSG_BR_ENTRYcommandnotifiesanewentrytothecurrent
membersatstart-up.
Allmembersaddthenewmembertotheirlistaftergettinganotificationmessage.
AnIPMSG_ANSENTRYcommandsendsamessagebacktothenewmember.
Thenewmembergetsthecurrentmemberdatabya
IPMSG_ANSENTRYcommand.Allmemberscancommunicateaslongasan
IPpacketexists.
AnIPMSG_BR_ABSENCEcommandbroadcastsabsencemodecancelor
nicknamechangetoallmembers.However,anIPMSG_ANSENTRYcommand
doesnotsendamessageback,whichisdifferentfromanIPMSG_BR_ENTRY
command.
IPMSG_BR_ENTRY,IPMSG_ANSENTRY,andIPMSG_BR_ABSENCEcommands
useanIPMSG_ABSENCEOPTflagforabsencemode.Inputanicknameto
additionalcommand.
AddanIPMSG_DIALUPOPTflagfordial-upuserswhocan'
tbereachedby
abroadcastcommand.Amemberrecognitioncommandneedstobe
sentindividuallytothememberswiththisoptionalflag.
(Extendedgroup)IPMSG_BR_ENTRYandIPMSG_BR_ABSENCEcommands
sendsagroupnamebyaddingthenewgroupnameafterthecurrent
commandformatcharacterstrings(Input'
\0'
betweenthecurrent
commandandextendedname).
2)Send/ReceiveMessage
SendMessageusesanIPMSG_SENDMSGcommandthatcaninputamessage
intheextendedarea.
ReceiveMessagesendsbackanIPMSG_RECVMSGcommandonly
ifanIPMSG_SENDCHECKOPTflagisON.Inputtheoriginalpacketnumber
totheextendedarea.
BroadcastMessageSendusesanIPMSG_BOADCASTOPTcommand
andanIPMSG_SENDMSGflagshouldbeON.
Auto-Sendpacket(absencenotice)needstobeaddedtoIPMSG_AUTORETOPT
forping-pongprotection.IfeitheroneoranotherpacketisON,then
confirmation/auto-sendpacketisnotsentback.
SendMessageSealingneedstobeanIPMSG_SECRETOPTpacketON.
Inthiscase,ReceiveMessagesendsanIPMSG_READMSGcommand.
Inputtheoriginalpacketnumbertotheextendedarea.
(AdditionalIPMSG_NOADDLISTOPT)
WhenreceivinganIPMSG_SENDMSGpacketfromahostthatis
notonyourSend/Receivelist,IPMsgwilleitherconfirmahostby
sendinganIPMSG_BR_ENTRYcommandoraddahostnameto
theSend/Receivelist.
However,single-shotMessageSend/Receiveactionneedstobeavoided.
AddanIPMSG_NOADDLISTOPTflagtoanIPMSG_SENDMSGcommand.
(AdditionalIPMSG_READCHECKOPTfromversion-8)
WhenanIPMSG_READMSGcommandcontainsanIPMSG_READCHECKOPTflag,
IPMsgprocessisthesameasIPMSG_SENDMSGwithan
IPMSG_SENDCHECKOPTflag.
However,SendMessageusesanIPMSG_ANSREADMSGcommand,
notIPMSG_RECVMSG.
3)MessageSend/Receive亅encryptedextension(Added
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