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galene/group/client.go
Juliusz Chroboczek f53276b89e Simplify the protocol and the protocol interface.
Split the id field into id and source, where source indicates the sender
of the message and id the entity being sent.  Remove the label request,
just use the offerer's username.  Maintain the username within the
ServerConnection, this removes a parameter from some methods.
2021-01-03 12:17:30 +01:00

107 lines
2.2 KiB
Go

package group
import (
"bytes"
"crypto/sha256"
"encoding/hex"
"encoding/json"
"errors"
"hash"
"golang.org/x/crypto/pbkdf2"
"github.com/jech/galene/conn"
)
type RawPassword struct {
Type string `json:"type,omitempty"`
Hash string `json:"hash,omitempty"`
Key string `json:"key"`
Salt string `json:"salt,omitempty"`
Iterations int `json:"iterations,omitempty"`
}
type Password RawPassword
func (p Password) Match(pw string) (bool, error) {
switch p.Type {
case "":
return p.Key == pw, nil
case "pbkdf2":
key, err := hex.DecodeString(p.Key)
if err != nil {
return false, err
}
salt, err := hex.DecodeString(p.Salt)
if err != nil {
return false, err
}
var h func() hash.Hash
switch p.Hash {
case "sha-256":
h = sha256.New
default:
return false, errors.New("unknown hash type")
}
theirKey := pbkdf2.Key(
[]byte(pw), salt, p.Iterations, len(key), h,
)
return bytes.Compare(key, theirKey) == 0, nil
default:
return false, errors.New("unknown password type")
}
}
func (p *Password) UnmarshalJSON(b []byte) error {
var k string
err := json.Unmarshal(b, &k)
if err == nil {
*p = Password{
Key: k,
}
return nil
}
var r RawPassword
err = json.Unmarshal(b, &r)
if err == nil {
*p = Password(r)
}
return err
}
func (p Password) MarshalJSON() ([]byte, error) {
if p.Type == "" && p.Hash == "" && p.Salt == "" && p.Iterations == 0 {
return json.Marshal(p.Key)
}
return json.Marshal(RawPassword(p))
}
type ClientCredentials struct {
Username string `json:"username,omitempty"`
Password *Password `json:"password,omitempty"`
}
type ClientPermissions struct {
Op bool `json:"op,omitempty"`
Present bool `json:"present,omitempty"`
Record bool `json:"record,omitempty"`
}
type Challengeable interface {
Username() string
Challenge(string, ClientCredentials) bool
}
type Client interface {
Group() *Group
Id() string
Challengeable
SetPermissions(ClientPermissions)
OverridePermissions(*Group) bool
PushConn(g *Group, id string, conn conn.Up, tracks []conn.UpTrack) error
PushClient(id, username string, add bool) error
}
type Kickable interface {
Kick(id, user, message string) error
}