libp2p/go-libp2p-resource-manager
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Only use allowlist if the normal resource scopes would have failed

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This commit is contained in:
Marco Munizaga 2022-06-27 15:04:27 -07:00
parent fd82a9fe01
commit 61008b316c
1 changed files with 34 additions and 19 deletions
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53
rcmgr.go
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@ -271,16 +271,22 @@ func (r *resourceManager) nextStreamId() int64 {
}
func (r *resourceManager) OpenConnection(dir network.Direction, usefd bool, endpoint multiaddr.Multiaddr) (network.ConnManagementScope, error) {
allowed := r.allowlist.Allowed(endpoint)
var conn *connectionScope
if allowed {
conn = newAllowListedConnectionScope(dir, usefd, r.limits.GetConnLimits(), r)
} else {
conn = newConnectionScope(dir, usefd, r.limits.GetConnLimits(), r)
}
conn.endpoint = endpoint
conn = newConnectionScope(dir, usefd, r.limits.GetConnLimits(), r, endpoint)
if err := conn.AddConn(dir, usefd); err != nil {
err := conn.AddConn(dir, usefd)
if err != nil {
// Try again if this is an allowlisted connection
// Failed to open connection, let's see if this was allowlisted and try again
allowed := r.allowlist.Allowed(endpoint)
if allowed {
conn.Done()
conn = newAllowListedConnectionScope(dir, usefd, r.limits.GetConnLimits(), r, endpoint)
err = conn.AddConn(dir, usefd)
}
}
if err != nil {
conn.Done()
r.metrics.BlockConn(dir, usefd)
return nil, err
@ -430,25 +436,28 @@ func newPeerScope(p peer.ID, limit Limit, rcmgr *resourceManager) *peerScope {
}
}
func newConnectionScope(dir network.Direction, usefd bool, limit Limit, rcmgr *resourceManager) *connectionScope {
func newConnectionScope(dir network.Direction, usefd bool, limit Limit, rcmgr *resourceManager, endpoint multiaddr.Multiaddr) *connectionScope {
return &connectionScope{
resourceScope: newResourceScope(limit,
[]*resourceScope{rcmgr.transient.resourceScope, rcmgr.system.resourceScope},
fmt.Sprintf("conn-%d", rcmgr.nextConnId()), rcmgr.trace, rcmgr.metrics),
dir: dir,
usefd: usefd,
rcmgr: rcmgr,
dir: dir,
usefd: usefd,
rcmgr: rcmgr,
endpoint: endpoint,
}
}
func newAllowListedConnectionScope(dir network.Direction, usefd bool, limit Limit, rcmgr *resourceManager) *connectionScope {
func newAllowListedConnectionScope(dir network.Direction, usefd bool, limit Limit, rcmgr *resourceManager, endpoint multiaddr.Multiaddr) *connectionScope {
return &connectionScope{
resourceScope: newResourceScope(limit,
[]*resourceScope{rcmgr.allowlistedTransient.resourceScope, rcmgr.allowlistedSystem.resourceScope},
fmt.Sprintf("conn-%d", rcmgr.nextConnId()), rcmgr.trace, rcmgr.metrics),
dir: dir,
usefd: usefd,
rcmgr: rcmgr,
dir: dir,
usefd: usefd,
rcmgr: rcmgr,
endpoint: endpoint,
isAllowlisted: true,
}
}
@ -533,14 +542,14 @@ func (s *connectionScope) PeerScope() network.PeerScope {
return s.peer
}
// transferAllowedToStandard Transfers this connection scope from being part of
// transferAllowedToStandard transfers this connection scope from being part of
// the allowlist set of scopes to being part of the standard set of scopes.
// Happens when we first allowlisted this connection due to its IP, but later
// discovered that the peer id not what we expected.
func (s *connectionScope) transferAllowedToStandard() (err error) {
systemScope := s.rcmgr.system.resourceScope
transientScope := s.rcmgr.system.resourceScope
transientScope := s.rcmgr.transient.resourceScope
stat := s.resourceScope.rc.stat()
@ -589,9 +598,11 @@ func (s *connectionScope) SetPeer(p peer.ID) error {
if s.isAllowlisted {
system = s.rcmgr.allowlistedSystem
transient = s.rcmgr.transient
transient = s.rcmgr.allowlistedTransient
if !s.rcmgr.allowlist.AllowedPeerAndMultiaddr(p, s.endpoint) {
s.isAllowlisted = false
// This is not an allowed peer + multiaddr combination. We need to
// transfer this connection to the general scope. We'll do this first by
// transferring the connection to the system and transient scopes, then
@ -602,6 +613,10 @@ func (s *connectionScope) SetPeer(p peer.ID) error {
// Failed to transfer this connection to the standard scopes
return err
}
// set the system and transient scopes to the non-allowlisted ones
system = s.rcmgr.system
transient = s.rcmgr.transient
}
}