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How the thing works(WIP!):
Packets have been moved to more meaningful pages.
At the beginning, the WoW Client sends an [[Packets#AuthLogonChallenge_Client|Authentication]] Packet to the Server.
Then the Server checks if the Account is banned etc. and ,if not, sends an [[Packets#AuthLogonChallenge_Server|Packet]] containing information for the [http://srp.stanford.edu/ SRP-6] algorithm.


=Logon=
Login:
The authentication server (and the WoW client) utilizes the [https://en.wikipedia.org/wiki/Secure_Remote_Password_protocol SRP-protocol] for secure authentication.


 
* [[Login|How to login to a server?]]
==Build 4125 (1.1.2)==
* [[:Category:Packet/Login|Login packets]]
 
It's worth noting that, for this build, the client automatically disconnect after a successful login challenge and proof exchange and sends a reconnect packet right away instead of asking for the realm list.
 
===AuthLogonChallenge_Client===
 
{|style="background:#FCFCFC; color:black"
|
! width="70" | Offset
! width="70" | Type
! width="100" | Name
! width="200"| Description
|-
|||0x0||uint8||Command||0x0
|-
|||0x1||uint8||Error||
|-
|||0x2||uint16||Size||
|-
|||0x4||char[4]||GameName||'WoW'
|-
|||0x8||uint8[3]||Version||0x00 0x08 0x00
|-
|||0xB||uint16||Build||aka [[Rev|Revision]]
|-
|||0xD||char[4]||Platform|| eg 'x86'
|-
|||0x11||char[4]||OS|| eg 'Win'
|-
|||0x15||char[4]||Country|| eg 'enUS'
|-
|||0x19||uint32||WorldRegion_bias||?
|-
|||0x1D||uint32||IP||Client-IP
|-
|||0x21||uint8||AccountName_Length||The length of the account name
|-
|||0x22||char[]||AccountName||
|}
 
===AuthLogonChallenge_Server===
 
{|style="background:#FCFCFC; color:black"
|
! width="70" | Offset
! width="70" | Type
! width="100" | Name
! width="200"| Description
|-
|||0x1||uint8||Command||0x0
|-
|||0x2||uint8||unk||
|-
|||0x3||uint8||error||
|-
|||0x4||char[32]||B||SRP public server ephemeral
|-
|||0x24||uint8||g_len||0x1
|-
|||0x25||uint8||g||SRP generator
|-
|||0x26||uint8||N_len||0x20||
|-
|||0x27||char[32]||N||SRP modulus
|-
|||0x47||char[32]||srp_salt||SRP user's salt
|-
|||0x47||char[16]||crc_salt||A salt to be used in AuthLogonProof_Client.CRC_Hash
|}
 
===AuthLogonProof_Client===
 
{|style="background:#FCFCFC; color:black"
|
! width="70" | Offset
! width="70" | Type
! width="100" | Name
! width="200"| Description
|-
|||0x0||uint8||Command||0x1
|-
|||0x01||uint8[32]||A||
|-
|||0x21||uint8[20]||M1||
|-
|||0x35||uint8[20]||CRC_Hash||
|-
|||0x49||uint8||nKeys||
|}
 
===AuthLogonProof_Server===
 
{|style="background:#FCFCFC; color:black"
|
! width="70" | Offset
! width="70" | Type
! width="100" | Name
! width="200"| Description
|-
|||0x0||uint8||Command||0x1
|-
|||0x1||uint8||Error||
|-
|||0x2||uint8[20]||M2||
|-
|||0x16||uint32||unk||
|}
 
===AuthReconnectionChallenge_Client===
 
It is the same structure as AuthLogonChallenge_Client, except that the command is 0x2.
 
===AuthReconnectionChallenge_Server===
 
{|style="background:#FCFCFC; color:black"
|
! width="70" | Offset
! width="70" | Type
! width="100" | Name
! width="200"| Description
|-
|||0x0||uint8||Command||0x2
|-
|||0x1||uint8||Error||
|-
|||0x2||char[16]||challenge_data||random data, used as a challenge
|-
|||0x12||uint64||unk1||
|-
|||0x1A||uint64||unk2||
|}
 
===AuthReconnectionProof_Client===
 
{|style="background:#FCFCFC; color:black"
|
! width="70" | Offset
! width="70" | Type
! width="100" | Name
! width="200"| Description
|-
|||0x0||uint8||Command||0x3
|-
|||0x1||char[16]||proof_data||
|-
|||0x11||char[20]||client_proof||
|-
|||0x25||char[20]||unk_hash||
|-
|||0x39||uint8||unk||
|}
 
To check if the client proof is correct, the server must calculate SHA1(account_name | proof_data | challenge_data | session_key) and compare it to client_proof.
 
===AuthReconnectionProof_Server===
 
{|style="background:#FCFCFC; color:black"
|
! width="70" | Offset
! width="70" | Type
! width="100" | Name
! width="200"| Description
|-
|||0x0||uint8||Command||0x3
|-
|||0x1||uint8||Error||
|}
 
==Builds 5875, 6005, 6141 (1.12.x)==
===Constants===
===AuthLogonChallenge===
====Client====
====Server====
 
===AuthLogonProof===
====Client====
====Server====
 
===RealmList===
====Client====
====Server====
 
==Builds 8606, 10505, 11159, 11403, 11723, 12340 (2.4.3 to 3.x)==
==Unknown build==
===AuthLogonChallenge_Client===
{|style="background:#FCFCFC; color:black"
|
! width="70" | Offset
! width="70" | Type
! width="100" | Name
! width="200"| Description
|-
|||0x0||uint8||Command||
|-
|||0x1||uint8||Error||
|-
|||0x2||uint16||Size||
|-
|||0x4||char[4]||GameName||'WoW'
|-
|||0x8||uint8[3]||Version||0x00 0x08 0x00
|-
|||0xB||uint16||Build||aka [[Rev|Revision]]
|-
|||0xD||char[4]||Platform|| eg 'x86'
|-
|||0x11||char[4]||OS|| eg 'Win'
|-
|||0x15||char[4]||Country|| eg 'enUS'
|-
|||0x19||uint32||WorldRegion_bias||?
|-
|||0x1D||uint32||IP||Client-IP
|-
|||0x21||uint8||AccountName_Length||The Lenght of the Account-Name
|-
|||0x22||char[]||AccountName||
|}
 
===AuthLogonChallenge_Server===
{|style="background:#FCFCFC; color:black"
|
! width="70" | Offset
! width="70" | Type
! width="100" | Name
! width="200"| Description
|-
|||0x1||uint8||cmd||
|-
|||0x2||uint8||unk||
|-
|||0x3||uint8||error||
|-
|||0x4||char[32]||B||Public ephemeral value(SRP)
|-
|||0x24||uint8||g_len||0x1
|-
|||0x25||uint8||g||A generator modulo N(SRP)
|-
|||0x26||uint8||N_len||0x20||
|-
|||0x27||char[32]||N||A large safe prime (N = 2q+1, where q is prime). All arithmetic is done modulo N.(SRP)
|-
|||0x47||char[32]||s||User's salt
|-
|||0x67||char[16]||unk2||
|}
===AuthLogonProof_Client===
{|style="background:#FCFCFC; color:black"
|
! width="70" | Offset
! width="70" | Type
! width="100" | Name
! width="200"| Description
|-
|||0x0||uint8||Command||
|-
|||0x01||uint8[32]||A||
|-
|||0x21||uint8[20]||M1||
|-
|||0x35||uint8[20]||CRC_Hash||
|-
|||0x49||uint8||nKeys||
|-
|||0x4A||uint8||unk||Added in 1.12.x client branch
|}
===AuthLogonProof_Server===
{|style="background:#FCFCFC; color:black"
|
! width="70" | Offset
! width="70" | Type
! width="100" | Name
! width="200"| Description
|-
|||0x0||uint8||Command||
|-
|||0x1||uint8||Error||
|-
|||0x2||uint8[20]||M2||
|-
|||0x16||uint32||unk1||
|-
|||0x1A||uint32||unk2||
|-
|||0x1E||uint16||unk3||
|}
 
===Logon Errors===
{|style="background:#FCFCFC; color:black"
|
! width="100" | Name
! width="70" | Value
|-
|||LOGIN_OK||0x00
|-
|||LOGIN_FAILED||0x01
|-
|||LOGIN_FAILED2||0x02
|-
|||LOGIN_BANNED||0x03
|-
|||LOGIN_UNKNOWN_ACCOUNT||0x04
|-
|||LOGIN_UNKNOWN_ACCOUNT3||0x05
|-
|||LOGIN_ALREADYONLINE||0x06
|-
||| LOGIN_NOTIME||0x07
|-
|||LOGIN_DBBUSY||0x08
|-
|||LOGIN_BADVERSION||0x09
|-
|||LOGIN_DOWNLOAD_FILE||0x0A
|-
|||LOGIN_FAILED3 ||0x0B
|-
|||LOGIN_SUSPENDED ||0x0C
|-
|||LOGIN_FAILED4||0x0D
|-
|||LOGIN_CONNECTED||0x0E
|-
|||LOGIN_PARENTALCONTROL||0x0F
|-
|||LOGIN_LOCKED_ENFORCED||0x10
|}
 
=Realm List=
 
==Vanilla (4125 to 5875)==
 
===RealmList_C===
 
{|style="background:#FCFCFC; color:black"
|
! width="70" | Offset
! width="70" | Type
! width="100" | Name
! width="200"| Description
|-
|||0x0||uint8||cmd||OP code = CMD_REALM_LIST
|-
|||0x1||uint32||unknown||0x00 00 00 00
|-
|}
 
===RealmHeader_S===
 
The server answers with a packet composed of this header, as many RealmInfo_S,
and a RealmFooter_S.
 
{|style="background:#FCFCFC; color:black"
|
! width="70" | Offset
! width="70" | Type
! width="100" | Name
! width="200"| Description
|-
|||0x0||uint8||cmd||OP code = CMD_REALM_LIST
|-
|||0x1||uint16||size||size of the rest of packet, without these 3 first bytes
|-
|||0x3||uint32||unknown||0x00 00 00 00
|-
|||0x7||uint8||nRealm||Number of realms
|-
|}
 
The size value can be computed with the part of the header taken into account
plus the footer (5+2 bytes) and the size of every RealmInfo_S which is variable.
 
===RealmInfo_S===
 
{|style="background:#FCFCFC; color:black"
|
! width="110" | Offset
! width="60" | Type
! width="100" | Name
! width="200"| Description
|-
|||0x0||uint32||icon||icon near realm
|-
|||0x4||uint8||flags||
|-
|||0x5||string||name||Zero terminated string; name of the Realm
|-
|||0x5+name.length()||string||addr_port||Zero terminated string; address of the Realm ("ip:port")
|-
|||0x5+name.length()+addr_port.length()||float||population||Population value. 0 is low, 1 is medium, 2 is high.
|-
|||0x9+name.length()+addr_port.length()||uint8||nCharacters||the Number of Chars you have on that server
|-
|||0xA+name.length()+addr_port.length()||uint8||TimeZone||
|-
|||0xB+name.length()+addr_port.length()||uint8||unknown
|-
|}
 
===RealmFooter_S ===
 
{|style="background:#FCFCFC; color:black"
|
! width="70" | Offset
! width="70" | Type
! width="100" | Name
! width="200"| Description
|-
|||0x0||uint16||unk||
|-
|}
 
==Unknown build==
 
===SRealmHeader===
 
{|style="background:#FCFCFC; color:black"
|
! width="70" | Offset
! width="70" | Type
! width="100" | Name
! width="200"| Description
|-
|||0x0||uint8||cmd||OP code = CMD_REALM_LIST
|-
|||0x1||uint16||size||size of the rest of packet, without this part
|-
|||0x3||uint32||unknown||0x00 00 00 00
|-
|||0x7||uint8||nRealm||Number of realms
|-
|}
 
===SRealmInfo===
 
{|style="background:#FCFCFC; color:black"
|
! width="110" | Offset
! width="60" | Type
! width="100" | Name
! width="200"| Description
|-
|||0x0||uint8||icon||icon near realm
|-
|||0x1||uint8||locked||added in 2.0.x
|-
|||0x2||uint8||color||color of record
|-
|||0x3||string||name||Zero terminated string; name of the Realm
|-
|||0x3+name.length()||string||addr_port||Zero terminated string;address of the Realm ("ip:port")
|-
|||0x3+name.length()+addr_port.length()||float||population||1.6 -> population value. lower == lower population and vice versa
|-
|||0x7+name.length()+addr_port.length()||uint8||nCharacters||the Number of Chars you have on that server
|-
|||0x8+name.length()+addr_port.length()||uint8||TimeZone||
|-
|||0x9+name.length()+addr_port.length()||uint8||unknown
|-
|}
 
=Char Creation=
==CMSG_CHAR_CREATE==
Upon creating a character, the client sends CMSG_CHAR_CREATE to the server with all the details
that makeup the newly created character.
 
{|style="background:#FCFCFC; color:black"
|
! width="80" | Name
! width="50" | Type
! width="200" | Value
|-
|||Name||String||Name of the Character
|-
|||[[ChrRaces.dbc|Race]]||uint8||
|-
|||[[ChrClasses.dbc|Class]]||uint8||
|-
|||Gender||uint8|| 0 - Male; 1 - Female
|-
|||[[CharSections.dbc|Skin]]||uint8||I think it's CharSections.dbc
|-
|||[[CharSections.dbc|Face]]||uint8||but I'm not sure about this
|-
|||[[CharSections.dbc|HairStyle]]||uint8||
|-
|||[[CharSections.dbc|HairColor]]||uint8||
|-
|||[[CharSections.dbc|FacialHair]]||uint8||
|-
|||[[CharStartOutfit.dbc|OutfitID]]||uint8||
|-
|}
 
 
[[Category:Client]]

Latest revision as of 00:26, 7 February 2016

Packets have been moved to more meaningful pages.

Login:

Retrieved from "https://wowdev.wiki/index.php?title=Packets&oldid=19432"