Disable CGO

.goreleaser.yml

@@ -12,13 +12,16 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+project_name: outline-ss-server
+
 # Build for macOS, Linux, and Windows.
 # Skip 32 bit macOS builds.
 builds:
   -
+    env:
+      - CGO_ENABLED=0
     goos:
-      # Disable macOS while the build is broken: https://github.com/golang/go/issues/29170
-      # - darwin
+      - darwin
       - windows
       - linux
     ignore:

shadowsocks/cipher_cache.go

@@ -0,0 +1,81 @@
+// Copyright 2018 Jigsaw Operations LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package shadowsocks
+
+import (
+	"container/list"
+	"time"
+)
+
+type CipherCache struct {
+	ipCiphers map[string]*list.List
+}
+
+type CachedItem struct {
+	itemsList *list.List
+	element   *list.Element
+}
+
+func (c *CipherCache) GetCiphers(ip string) []*CachedItem {
+	cipherList, ok := c.ipCiphers[ip]
+	if !ok {
+		return []*CachedItem{}
+	}
+	items := make([]*CachedItem, cipherList.Len())
+	pos := 0
+	for el := cipherList.Front(); el != nil; el = el.Next() {
+		items[pos] = &CachedItem{cipherList, el}
+	}
+	return items
+}
+
+type cipherTime struct {
+	CipherID  string
+	Timestamp time.Time
+}
+
+// WARNING
+// TODO: All of this needs a MUTEX!!!!!!!
+// WARNING
+func (cc *CipherCache) AddCipher(ip string, cipherId string) {
+	cipherList, ok := cc.ipCiphers[ip]
+	if !ok {
+		cipherList = list.New()
+		cc.ipCiphers[ip] = cipherList
+	}
+	cipherList.PushFront(cipherTime{CipherID: cipherId, Timestamp: time.Now()})
+}
+
+func (cc *CipherCache) ExpireOlderThan(oldestTime time.Time) {
+	for key, itemList := range cc.ipCiphers {
+		// Remove expired items
+		for item := itemList.Back(); item != nil && item.Value.(*cipherTime).Timestamp.Sub(oldestTime) < 0; item = itemList.Back() {
+			itemList.Remove(item)
+		}
+		if itemList.Len() == 0 {
+			// TODO: Make this not break the loop
+			delete(cc.ipCiphers, key)
+		}
+	}
+}
+
+func (ci *CachedItem) Refresh() {
+	ci.element.Value.(*cipherTime).Timestamp = time.Now()
+	ci.itemsList.MoveToFront(ci.element)
+}
+
+func (ci *CachedItem) CipherId() string {
+	return ci.element.Value.(*cipherTime).CipherID
+}