Packets/Login/Vanilla: Difference between revisions
(Reorganize packets to be linear instead of split by version. The small amount of changes for 1.12 meant that it was jarring having them in different headers instead of under the same header differentiated by a subheader.) |
(→Opcodes and Errors: Add description to existing opcodes and add patching opcodes) |
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! Name | ! Name | ||
! Value | ! Value | ||
! Description | |||
|- | |- | ||
| | !colspan="3"| Authentication | ||
|- | |- | ||
| | | LOGIN_CHALL || 0x00 || Intial information sent by client and then challenge by server. | ||
|- | |- | ||
| | | LOGIN_PROOF || 0x01 || Proof sent by client and then server. | ||
|- | |- | ||
| | | RECON_CHALL || 0x02 || Reconnect challenge sent by client and then server. | ||
|- | |- | ||
| | | RECON_PROOF || 0x03 || Reconnect proof sent by client and then server. | ||
|- | |- | ||
| | | SURVEY_RESULT || 0x04 || Used for hardware survey. | ||
|- | |- | ||
| XFER_DATA || 0x31 | !colspan="3"| Realmlist | ||
|- | |||
| REALMLIST || 0x10 || Realmlist request sent by client and realmlist information sent by server. | |||
|- | |||
!colspan="3"| Patching | |||
|- | |||
| XFER_INITIATE || 0x30 || Used for patching. | |||
|- | |||
| XFER_DATA || 0x31 || Used for patching. | |||
|- | |||
| XFER_ACCEPT || 0x32 || Used for patching. | |||
|- | |||
| XFER_RESUME || 0x33 || Used for patching. | |||
|- | |||
| XFER_CANCEL || 0x34 || Used for patching. | |||
|} | |} | ||
Revision as of 15:10, 30 April 2021
It's worth noting that, for build (1.1.2.4125), the client automatically disconnects after a successful login challenge and proof exchange and sends a reconnect packet right away instead of asking for the realm list.
Opcodes and Errors
Name | Value | Description |
---|---|---|
Authentication | ||
LOGIN_CHALL | 0x00 | Intial information sent by client and then challenge by server. |
LOGIN_PROOF | 0x01 | Proof sent by client and then server. |
RECON_CHALL | 0x02 | Reconnect challenge sent by client and then server. |
RECON_PROOF | 0x03 | Reconnect proof sent by client and then server. |
SURVEY_RESULT | 0x04 | Used for hardware survey. |
Realmlist | ||
REALMLIST | 0x10 | Realmlist request sent by client and realmlist information sent by server. |
Patching | ||
XFER_INITIATE | 0x30 | Used for patching. |
XFER_DATA | 0x31 | Used for patching. |
XFER_ACCEPT | 0x32 | Used for patching. |
XFER_RESUME | 0x33 | Used for patching. |
XFER_CANCEL | 0x34 | Used for patching. |
Name | 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 |
Challenge packets
Offset | Type | Name | Description |
---|---|---|---|
0x0 | uint8 | command | LOGIN_CHALL (0x0) |
0x1 | uint8 | protocol_version | 3 for 1.12, unknown for 1.1. |
0x2 | uint16 | size | length of package minus the size of the command, protocol_version and size fields (4 bytes). |
0x4 | char[4] | gamename | 'WoW' |
0x8 | uint8[3] | version | 0x01 0x01 0x02 |
0xB | uint16 | build | 4125, aka Revision |
0xD | char[4] | platform | eg 'x86' |
0x11 | char[4] | os | eg 'Win' |
0x15 | char[4] | country | eg 'enUS' |
0x19 | uint32 | worldregion_bias | offset in minutes from UTC time , eg. 180 means 180 minutes |
0x1D | uint32 | ip | client_ip |
0x21 | uint8 | account_name_len | Length of the account_name field in bytes. The client can only send 16 characters, but this can still be more than 16 bytes if non-ASCII characters are used. |
0x22 | char[account_name_len] | account_name | UTF-8 encoded uppercase string of the username. Not all unicode characters are uppercased correctly. |
(1.1.2.4125)
Offset | Type | Name | Description |
---|---|---|---|
0x1 | uint8 | command | LOGIN_CHALL (0x0) |
0x2 | uint8 | protocol_version | Must be 0. |
0x3 | uint8 | result | |
0x4 | char[32] | B | SRP public server ephemeral |
0x24 | uint8 | g_len | SRP generator length |
0x25 | uint8 | g | SRP generator |
0x26 | uint8 | n_len | SRP modulus length |
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 |
(1.12.1.5875)
The AuthLogonChallenge_Server packet has added the two_factor_authentication field and will hang waiting for it to be sent.
Offset | Type | Name | Description |
---|---|---|---|
0x1 | uint8 | command | LOGIN_CHALL (0x0) |
0x2 | uint8 | protocol_version | Must be 0. |
0x3 | uint8 | result | |
0x4 | char[32] | B | SRP public server ephemeral |
0x24 | uint8 | g_len | SRP generator length |
0x25 | uint8 | g | SRP generator |
0x26 | uint8 | n_len | SRP modulus length |
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 |
0x57 | bool (size 1 byte) | two_factor_authentication | 0 for disabled. |
Proof packets
(1.1.2.4125)
Offset | Type | Name | Description |
---|---|---|---|
0x0 | uint8 | command | 0x1 |
0x1 | uint8[32] | a | |
0x21 | uint8[20] | m1 | |
0x35 | uint8[20] | crc_hash | |
0x49 | uint8 | num_keys |
Offset | Type | Name | Description |
---|---|---|---|
0x0 | uint8 | command | 0x1 |
0x1 | uint8 | error | |
0x2 | uint8[20] | m2 | |
0x16 | uint32 | unk |
(1.12.1.5875)
Proof packets changed during Vanilla:
Offset | Type | Name | Description |
---|---|---|---|
0x0 | uint8 | command | LOGIN_PROOF (0x1) |
0x1 | uint8[32] | a | Client public key. |
0x21 | uint8[20] | m1 | Client proof. |
0x35 | uint8[20] | crc_hash | |
0x49 | uint8 | num_keys | Used for unknown telemetry. Can be expected to always be 0. |
0x4A | bool (size 1 byte) | two_factor_enabled | If false the packet ends here, if true the two fields below are included. Added in 1.12.x client branch. |
uint8[16] | pin_salt | Salt used for PIN. Only included if two_factor_enabled is true. | |
uint8[20] | pin_hash | Hash used for PIN. Only included if two_factor_enabled is true. |
Offset | Type | Name | Description |
---|---|---|---|
0x0 | uint8 | command | LOGIN_PROOF (0x1) |
0x1 | uint8 | error | |
0x2 | uint8[20] | m2 | Server proof. |
0x16 | uint32 | hardware_survey_id | ID of a hardware survey that the client should perform. Set to 0 to not use. |
Reconnection challenge packets
AuthReconnectionChallenge_Client has the same structure as AuthLogonChallenge_Client, except that the command is 0x2.
Offset | Type | Name | 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 |
Reconnection proof packets
Offset | Type | Name | 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.
Offset | Type | Name | Description |
---|---|---|---|
0x0 | uint8 | command | 0x3 |
0x1 | uint8 | error |
Realm list packets
Offset | Type | Name | Description |
---|---|---|---|
0x0 | uint8 | cmd | REALMLIST |
0x1 | uint32 | unknown | null |
The server answers with a packet composed of a RealmHeader_Server, as many RealmInfo_Server as specified and a RealmFooter_Server.
Offset | Type | Name | Description |
---|---|---|---|
0x0 | uint8 | cmd | REALMLIST |
0x1 | uint16 | size | size of the rest of packet, without these 3 first bytes |
0x3 | uint32 | unknown | null |
0x7 | uint8 | num_realms | Number of RealmInfo_Server |
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_Server which is variable.
Offset | Type | Name | Description |
---|---|---|---|
0x0 | uint32 | type | realm type? 0 is normal, 1 is PVP |
0x4 | uint8 | flags | see below |
0x5 | char[] | name | Zero terminated string; name of the Realm |
char[] | addr_port | Zero terminated string; address of the Realm ("ip:port") | |
float | population | Population value. 0 is low, 1 is medium, 2 is high. | |
uint8 | num_chars | The number of chars you have on that server | |
uint8 | time_zone | really? | |
uint8 | unknown |
Flags Meaning 0x01 Color the realm name in red (can't create char?) 0x02 Realm is offline
Offset | Type | Name | Description |
---|---|---|---|
0x0 | uint16 | unk |