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Add Config.{Force,PreferNo}Encryption

This commit is contained in:
Matt Joiner 2016-09-16 12:42:41 +10:00
parent 69f4c5a7e9
commit 9126db177b
2 changed files with 16 additions and 8 deletions
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17
client.go
View File

@ -582,7 +582,8 @@ func (cl *Client) establishOutgoingConn(t *Torrent, addr string) (c *connection,
if nc == nil {
return
}
c, err = cl.handshakesConnection(nc, t, !cl.config.DisableEncryption, utp)
encryptFirst := !cl.config.DisableEncryption && !cl.config.PreferNoEncryption
c, err = cl.handshakesConnection(nc, t, encryptFirst, utp)
if err != nil {
nc.Close()
return
@ -590,12 +591,12 @@ func (cl *Client) establishOutgoingConn(t *Torrent, addr string) (c *connection,
return
}
nc.Close()
if cl.config.DisableEncryption {
// We already tried without encryption.
if cl.config.DisableEncryption || cl.config.ForceEncryption {
// There's no alternate encryption case to try.
return
}
// Try again without encryption, using whichever protocol type worked last
// time.
// Try again with encryption if we didn't earlier, or without if we did,
// using whichever protocol type worked last time.
if utp {
nc, err = cl.dialUTP(addr, t)
} else {
@ -605,7 +606,7 @@ func (cl *Client) establishOutgoingConn(t *Torrent, addr string) (c *connection,
err = fmt.Errorf("error dialing for unencrypted connection: %s", err)
return
}
c, err = cl.handshakesConnection(nc, t, false, utp)
c, err = cl.handshakesConnection(nc, t, !encryptFirst, utp)
if err != nil || c == nil {
nc.Close()
}
@ -852,6 +853,10 @@ func (cl *Client) receiveHandshakes(c *connection) (t *Torrent, err error) {
return
}
}
if cl.config.ForceEncryption && !c.encrypted {
err = errors.New("connection not encrypted")
return
}
ih, ok, err := cl.connBTHandshake(c, nil)
if err != nil {
err = fmt.Errorf("error during bt handshake: %s", err)

3
config.go
View File

@ -37,7 +37,10 @@ type Config struct {
// are in the storage package. If not set, the "file" implementation is
// used.
DefaultStorage storage.ClientImpl
DisableEncryption bool `long:"disable-encryption"`
ForceEncryption bool // Don't allow unobfuscated connections.
PreferNoEncryption bool
IPBlocklist iplist.Ranger
DisableIPv6 bool `long:"disable-ipv6"`