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Diffstat (limited to 'swarm/pss/pss.go')
-rw-r--r--swarm/pss/pss.go74
1 files changed, 43 insertions, 31 deletions
diff --git a/swarm/pss/pss.go b/swarm/pss/pss.go
index d0986d280..1bc28890f 100644
--- a/swarm/pss/pss.go
+++ b/swarm/pss/pss.go
@@ -81,7 +81,7 @@ type senderPeer interface {
// member `protected` prevents garbage collection of the instance
type pssPeer struct {
lastSeen time.Time
- address *PssAddress
+ address PssAddress
protected bool
}
@@ -396,9 +396,11 @@ func (p *Pss) handlePssMsg(ctx context.Context, msg interface{}) error {
// raw is simplest handler contingency to check, so check that first
var isRaw bool
if pssmsg.isRaw() {
- if !p.topicHandlerCaps[psstopic].raw {
- log.Debug("No handler for raw message", "topic", psstopic)
- return nil
+ if _, ok := p.topicHandlerCaps[psstopic]; ok {
+ if !p.topicHandlerCaps[psstopic].raw {
+ log.Debug("No handler for raw message", "topic", psstopic)
+ return nil
+ }
}
isRaw = true
}
@@ -437,10 +439,10 @@ func (p *Pss) process(pssmsg *PssMsg, raw bool, prox bool) error {
var err error
var recvmsg *whisper.ReceivedMessage
var payload []byte
- var from *PssAddress
+ var from PssAddress
var asymmetric bool
var keyid string
- var keyFunc func(envelope *whisper.Envelope) (*whisper.ReceivedMessage, string, *PssAddress, error)
+ var keyFunc func(envelope *whisper.Envelope) (*whisper.ReceivedMessage, string, PssAddress, error)
envelope := pssmsg.Payload
psstopic := Topic(envelope.Topic)
@@ -473,7 +475,7 @@ func (p *Pss) process(pssmsg *PssMsg, raw bool, prox bool) error {
}
-func (p *Pss) executeHandlers(topic Topic, payload []byte, from *PssAddress, raw bool, prox bool, asymmetric bool, keyid string) {
+func (p *Pss) executeHandlers(topic Topic, payload []byte, from PssAddress, raw bool, prox bool, asymmetric bool, keyid string) {
handlers := p.getHandlers(topic)
peer := p2p.NewPeer(enode.ID{}, fmt.Sprintf("%x", from), []p2p.Cap{})
for h := range handlers {
@@ -528,7 +530,10 @@ func (p *Pss) isSelfPossibleRecipient(msg *PssMsg, prox bool) bool {
//
// The value in `address` will be used as a routing hint for the
// public key / topic association
-func (p *Pss) SetPeerPublicKey(pubkey *ecdsa.PublicKey, topic Topic, address *PssAddress) error {
+func (p *Pss) SetPeerPublicKey(pubkey *ecdsa.PublicKey, topic Topic, address PssAddress) error {
+ if err := validateAddress(address); err != nil {
+ return err
+ }
pubkeybytes := crypto.FromECDSAPub(pubkey)
if len(pubkeybytes) == 0 {
return fmt.Errorf("invalid public key: %v", pubkey)
@@ -543,12 +548,12 @@ func (p *Pss) SetPeerPublicKey(pubkey *ecdsa.PublicKey, topic Topic, address *Ps
}
p.pubKeyPool[pubkeyid][topic] = psp
p.pubKeyPoolMu.Unlock()
- log.Trace("added pubkey", "pubkeyid", pubkeyid, "topic", topic, "address", common.ToHex(*address))
+ log.Trace("added pubkey", "pubkeyid", pubkeyid, "topic", topic, "address", address)
return nil
}
// Automatically generate a new symkey for a topic and address hint
-func (p *Pss) GenerateSymmetricKey(topic Topic, address *PssAddress, addToCache bool) (string, error) {
+func (p *Pss) GenerateSymmetricKey(topic Topic, address PssAddress, addToCache bool) (string, error) {
keyid, err := p.w.GenerateSymKey()
if err != nil {
return "", err
@@ -569,11 +574,14 @@ func (p *Pss) GenerateSymmetricKey(topic Topic, address *PssAddress, addToCache
//
// Returns a string id that can be used to retrieve the key bytes
// from the whisper backend (see pss.GetSymmetricKey())
-func (p *Pss) SetSymmetricKey(key []byte, topic Topic, address *PssAddress, addtocache bool) (string, error) {
+func (p *Pss) SetSymmetricKey(key []byte, topic Topic, address PssAddress, addtocache bool) (string, error) {
+ if err := validateAddress(address); err != nil {
+ return "", err
+ }
return p.setSymmetricKey(key, topic, address, addtocache, true)
}
-func (p *Pss) setSymmetricKey(key []byte, topic Topic, address *PssAddress, addtocache bool, protected bool) (string, error) {
+func (p *Pss) setSymmetricKey(key []byte, topic Topic, address PssAddress, addtocache bool, protected bool) (string, error) {
keyid, err := p.w.AddSymKeyDirect(key)
if err != nil {
return "", err
@@ -585,7 +593,7 @@ func (p *Pss) setSymmetricKey(key []byte, topic Topic, address *PssAddress, addt
// adds a symmetric key to the pss key pool, and optionally adds the key
// to the collection of keys used to attempt symmetric decryption of
// incoming messages
-func (p *Pss) addSymmetricKeyToPool(keyid string, topic Topic, address *PssAddress, addtocache bool, protected bool) {
+func (p *Pss) addSymmetricKeyToPool(keyid string, topic Topic, address PssAddress, addtocache bool, protected bool) {
psp := &pssPeer{
address: address,
protected: protected,
@@ -601,7 +609,7 @@ func (p *Pss) addSymmetricKeyToPool(keyid string, topic Topic, address *PssAddre
p.symKeyDecryptCache[p.symKeyDecryptCacheCursor%cap(p.symKeyDecryptCache)] = &keyid
}
key, _ := p.GetSymmetricKey(keyid)
- log.Trace("added symkey", "symkeyid", keyid, "symkey", common.ToHex(key), "topic", topic, "address", fmt.Sprintf("%p", address), "cache", addtocache)
+ log.Trace("added symkey", "symkeyid", keyid, "symkey", common.ToHex(key), "topic", topic, "address", address, "cache", addtocache)
}
// Returns a symmetric key byte seqyence stored in the whisper backend
@@ -622,7 +630,7 @@ func (p *Pss) GetPublickeyPeers(keyid string) (topic []Topic, address []PssAddre
defer p.pubKeyPoolMu.RUnlock()
for t, peer := range p.pubKeyPool[keyid] {
topic = append(topic, t)
- address = append(address, *peer.address)
+ address = append(address, peer.address)
}
return topic, address, nil
@@ -633,7 +641,7 @@ func (p *Pss) getPeerAddress(keyid string, topic Topic) (PssAddress, error) {
defer p.pubKeyPoolMu.RUnlock()
if peers, ok := p.pubKeyPool[keyid]; ok {
if t, ok := peers[topic]; ok {
- return *t.address, nil
+ return t.address, nil
}
}
return nil, fmt.Errorf("peer with pubkey %s, topic %x not found", keyid, topic)
@@ -645,7 +653,7 @@ func (p *Pss) getPeerAddress(keyid string, topic Topic) (PssAddress, error) {
// encapsulating the decrypted message, and the whisper backend id
// of the symmetric key used to decrypt the message.
// It fails if decryption of the message fails or if the message is corrupted
-func (p *Pss) processSym(envelope *whisper.Envelope) (*whisper.ReceivedMessage, string, *PssAddress, error) {
+func (p *Pss) processSym(envelope *whisper.Envelope) (*whisper.ReceivedMessage, string, PssAddress, error) {
metrics.GetOrRegisterCounter("pss.process.sym", nil).Inc(1)
for i := p.symKeyDecryptCacheCursor; i > p.symKeyDecryptCacheCursor-cap(p.symKeyDecryptCache) && i > 0; i-- {
@@ -677,7 +685,7 @@ func (p *Pss) processSym(envelope *whisper.Envelope) (*whisper.ReceivedMessage,
// encapsulating the decrypted message, and the byte representation of
// the public key used to decrypt the message.
// It fails if decryption of message fails, or if the message is corrupted
-func (p *Pss) processAsym(envelope *whisper.Envelope) (*whisper.ReceivedMessage, string, *PssAddress, error) {
+func (p *Pss) processAsym(envelope *whisper.Envelope) (*whisper.ReceivedMessage, string, PssAddress, error) {
metrics.GetOrRegisterCounter("pss.process.asym", nil).Inc(1)
recvmsg, err := envelope.OpenAsymmetric(p.privateKey)
@@ -689,7 +697,7 @@ func (p *Pss) processAsym(envelope *whisper.Envelope) (*whisper.ReceivedMessage,
return nil, "", nil, fmt.Errorf("invalid message")
}
pubkeyid := common.ToHex(crypto.FromECDSAPub(recvmsg.Src))
- var from *PssAddress
+ var from PssAddress
p.pubKeyPoolMu.Lock()
if p.pubKeyPool[pubkeyid][Topic(envelope.Topic)] != nil {
from = p.pubKeyPool[pubkeyid][Topic(envelope.Topic)].address
@@ -751,6 +759,9 @@ func (p *Pss) enqueue(msg *PssMsg) error {
//
// Will fail if raw messages are disallowed
func (p *Pss) SendRaw(address PssAddress, topic Topic, msg []byte) error {
+ if err := validateAddress(address); err != nil {
+ return err
+ }
pssMsgParams := &msgParams{
raw: true,
}
@@ -770,8 +781,10 @@ func (p *Pss) SendRaw(address PssAddress, topic Topic, msg []byte) error {
// if we have a proxhandler on this topic
// also deliver message to ourselves
- if p.isSelfPossibleRecipient(pssMsg, true) && p.topicHandlerCaps[topic].prox {
- return p.process(pssMsg, true, true)
+ if _, ok := p.topicHandlerCaps[topic]; ok {
+ if p.isSelfPossibleRecipient(pssMsg, true) && p.topicHandlerCaps[topic].prox {
+ return p.process(pssMsg, true, true)
+ }
}
return nil
}
@@ -789,11 +802,8 @@ func (p *Pss) SendSym(symkeyid string, topic Topic, msg []byte) error {
p.symKeyPoolMu.Unlock()
if !ok {
return fmt.Errorf("invalid topic '%s' for symkey '%s'", topic.String(), symkeyid)
- } else if psp.address == nil {
- return fmt.Errorf("no address hint for topic '%s' symkey '%s'", topic.String(), symkeyid)
}
- err = p.send(*psp.address, topic, msg, false, symkey)
- return err
+ return p.send(psp.address, topic, msg, false, symkey)
}
// Send a message using asymmetric encryption
@@ -808,13 +818,8 @@ func (p *Pss) SendAsym(pubkeyid string, topic Topic, msg []byte) error {
p.pubKeyPoolMu.Unlock()
if !ok {
return fmt.Errorf("invalid topic '%s' for pubkey '%s'", topic.String(), pubkeyid)
- } else if psp.address == nil {
- return fmt.Errorf("no address hint for topic '%s' pubkey '%s'", topic.String(), pubkeyid)
}
- go func() {
- p.send(*psp.address, topic, msg, true, common.FromHex(pubkeyid))
- }()
- return nil
+ return p.send(psp.address, topic, msg, true, common.FromHex(pubkeyid))
}
// Send is payload agnostic, and will accept any byte slice as payload
@@ -1034,3 +1039,10 @@ func (p *Pss) digestBytes(msg []byte) pssDigest {
copy(digest[:], key[:digestLength])
return digest
}
+
+func validateAddress(addr PssAddress) error {
+ if len(addr) > addressLength {
+ return errors.New("address too long")
+ }
+ return nil
+}
generated by cgit (git 2.34.1) at 2024-11-14 06:14:52 +0800