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https://github.com/jech/galene.git
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14a4303664
We used to signal connection replacement by reusing the same connection id. This turned out to be racy, as we couldn't reliably discard old answers after a connection id was refused. We now use a new id for every new connection, and explicitly signal stream replacement in the offer message. This requires maintaining a local id on the client side.
108 lines
2.2 KiB
Go
108 lines
2.2 KiB
Go
package group
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import (
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"bytes"
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"crypto/sha256"
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"encoding/hex"
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"encoding/json"
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"errors"
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"hash"
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"golang.org/x/crypto/pbkdf2"
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"github.com/jech/galene/conn"
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)
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type RawPassword struct {
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Type string `json:"type,omitempty"`
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Hash string `json:"hash,omitempty"`
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Key string `json:"key"`
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Salt string `json:"salt,omitempty"`
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Iterations int `json:"iterations,omitempty"`
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}
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type Password RawPassword
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func (p Password) Match(pw string) (bool, error) {
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switch p.Type {
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case "":
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return p.Key == pw, nil
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case "pbkdf2":
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key, err := hex.DecodeString(p.Key)
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if err != nil {
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return false, err
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}
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salt, err := hex.DecodeString(p.Salt)
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if err != nil {
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return false, err
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}
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var h func() hash.Hash
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switch p.Hash {
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case "sha-256":
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h = sha256.New
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default:
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return false, errors.New("unknown hash type")
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}
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theirKey := pbkdf2.Key(
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[]byte(pw), salt, p.Iterations, len(key), h,
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)
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return bytes.Compare(key, theirKey) == 0, nil
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default:
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return false, errors.New("unknown password type")
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}
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}
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func (p *Password) UnmarshalJSON(b []byte) error {
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var k string
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err := json.Unmarshal(b, &k)
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if err == nil {
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*p = Password{
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Key: k,
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}
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return nil
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}
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var r RawPassword
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err = json.Unmarshal(b, &r)
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if err == nil {
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*p = Password(r)
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}
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return err
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}
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func (p Password) MarshalJSON() ([]byte, error) {
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if p.Type == "" && p.Hash == "" && p.Salt == "" && p.Iterations == 0 {
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return json.Marshal(p.Key)
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}
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return json.Marshal(RawPassword(p))
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}
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type ClientCredentials struct {
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Username string `json:"username,omitempty"`
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Password *Password `json:"password,omitempty"`
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}
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type ClientPermissions struct {
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Op bool `json:"op,omitempty"`
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Present bool `json:"present,omitempty"`
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Record bool `json:"record,omitempty"`
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}
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type Challengeable interface {
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Username() string
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Challenge(string, ClientCredentials) bool
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}
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type Client interface {
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Group() *Group
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Id() string
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Challengeable
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Permissions() ClientPermissions
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SetPermissions(ClientPermissions)
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OverridePermissions(*Group) bool
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PushConn(g *Group, id string, conn conn.Up, tracks []conn.UpTrack, replace string) error
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PushClient(id, username string, add bool) error
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}
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type Kickable interface {
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Kick(id, user, message string) error
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}
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