From 6d81009b26b7e10d4f74ef1be0bd05585c2e503f Mon Sep 17 00:00:00 2001
From: Xiang Li <xiang.li@coreos.com>
Date: Sat, 28 Feb 2015 15:02:47 -0800
Subject: [PATCH] acl: remove acl pkg

---
 acl/acl.go      | 144 ------------------------------------------------
 acl/acl_test.go |  81 ---------------------------
 2 files changed, 225 deletions(-)
 delete mode 100644 acl/acl.go
 delete mode 100644 acl/acl_test.go

diff --git a/acl/acl.go b/acl/acl.go
deleted file mode 100644
index 43658dd59..000000000
--- a/acl/acl.go
+++ /dev/null
@@ -1,144 +0,0 @@
-package acl
-
-import (
-	"bytes"
-	"log"
-)
-
-const (
-	read   = "read"
-	write  = "write"
-	manage = "manage"
-)
-
-type ACL interface {
-	// Read checks the permission to read the prefix.
-	// Read permission can read the value of the prefix as a key or list the keys under prefix.
-	Read(prefix []byte) bool
-	// Write checks the permission to write the prefix.
-	// Write permission can write a key under the given prefix (including the prefix as a key).
-	Write(prefix []byte) bool
-	// Manage checks the permission to grant /revoke permission for the prefix.
-	Manage(prefix []byte) bool
-
-	// Manage the ACL
-	// Before call these functions, the caller must check the management permission on its own.
-	// For example, A wants to grant B read permission for prefix "foo". A must check its own manage
-	// permission before calling GrantRead("foo") on B.
-	GrantRead(prefix []byte)
-	GrantWrite(prefix []byte)
-	GrantManage(prefix []byte)
-	RevokeRead(prefix []byte)
-	RevokeWrite(prefix []byte)
-	RevokeManage(prefix []byte)
-	Clear()
-}
-
-type acl struct {
-	write  [][]byte
-	read   [][]byte
-	manage [][]byte
-
-	parent ACL
-}
-
-func (a *acl) Read(prefix []byte) bool {
-	if a.check(read, prefix) {
-		return true
-	}
-	if a.parent != nil {
-		return a.parent.Read(prefix)
-	}
-	return false
-}
-
-func (a *acl) Write(prefix []byte) bool {
-	if a.check(write, prefix) {
-		return true
-	}
-	if a.parent != nil {
-		return a.parent.Write(prefix)
-	}
-	return false
-}
-
-func (a *acl) Manage(prefix []byte) bool {
-	if a.check(manage, prefix) {
-		return true
-	}
-	if a.parent != nil {
-		return a.parent.Manage(prefix)
-	}
-	return false
-}
-
-func (a *acl) GrantRead(prefix []byte)   { a.grant(read, prefix) }
-func (a *acl) GrantWrite(prefix []byte)  { a.grant(write, prefix) }
-func (a *acl) GrantManage(prefix []byte) { a.grant(manage, prefix) }
-
-func (a *acl) RevokeRead(prefix []byte)   { a.revoke(read, prefix) }
-func (a *acl) RevokeWrite(prefix []byte)  { a.revoke(write, prefix) }
-func (a *acl) RevokeManage(prefix []byte) { a.revoke(manage, prefix) }
-
-func (a *acl) Clear() {
-	a.read = nil
-	a.write = nil
-	a.manage = nil
-}
-
-func (a *acl) check(op string, prefix []byte) bool {
-	list := a.list(op)
-	for _, pp := range list {
-		if len(pp) == 0 {
-			continue
-		}
-		if bytes.HasPrefix(prefix, pp) {
-			return true
-		}
-	}
-	return false
-}
-
-func (a *acl) grant(op string, prefix []byte) {
-	list := a.list(op)
-	for _, pp := range list {
-		if bytes.Equal(prefix, pp) {
-			return
-		}
-	}
-
-	switch op {
-	case read:
-		a.read = append(a.read, prefix)
-	case write:
-		a.write = append(a.write, prefix)
-	case manage:
-		a.manage = append(a.manage, prefix)
-	default:
-		log.Panicf("acl: unexpected check operation %s", op)
-	}
-	return
-}
-
-func (a *acl) revoke(op string, prefix []byte) {
-	list := a.list(op)
-	for i, pp := range list {
-		if bytes.Equal(prefix, pp) {
-			list[i] = nil
-		}
-	}
-}
-
-func (a *acl) list(op string) [][]byte {
-	switch op {
-	case read:
-		return a.read
-	case write:
-		return a.write
-	case manage:
-		return a.manage
-	default:
-		log.Panicf("acl: unexpected check operation %s", op)
-	}
-	return nil
-}
diff --git a/acl/acl_test.go b/acl/acl_test.go
deleted file mode 100644
index ab25a066f..000000000
--- a/acl/acl_test.go
+++ /dev/null
@@ -1,81 +0,0 @@
-package acl
-
-import "testing"
-
-func TestACLRead(t *testing.T) {
-	readp := []byte("foobar")
-	acl := newTestEmpty()
-	acl.GrantRead(readp)
-
-	for i := 0; i < len(readp); i++ {
-		r := acl.Read(readp[:i])
-		if r == true {
-			t.Errorf("#%d.deny: r = %t, want %t", i, r, false)
-		}
-	}
-
-	for i := 0; i < len(readp); i++ {
-		r := acl.Read(append(readp, readp[:i]...))
-		if r == false {
-			t.Errorf("#%d.allow: r = %t, want %t", i, r, true)
-		}
-	}
-}
-
-func TestACLWrite(t *testing.T) {
-	writep := []byte("foobar")
-	acl := newTestEmpty()
-	acl.GrantWrite(writep)
-
-	for i := 0; i < len(writep); i++ {
-		w := acl.Write(writep[:i])
-		if w == true {
-			t.Errorf("#%d.deny: w = %t, want %t", i, w, false)
-		}
-	}
-
-	for i := 0; i < len(writep); i++ {
-		w := acl.Write(append(writep, writep[:i]...))
-		if w == false {
-			t.Errorf("#%d.allow: w = %t, want %t", i, w, true)
-		}
-	}
-}
-
-func TestACLManage(t *testing.T) {
-	managep := []byte("foobar")
-	acl := newTestEmpty()
-	acl.GrantManage(managep)
-
-	for i := 0; i < len(managep); i++ {
-		m := acl.Manage(managep[:i])
-		if m == true {
-			t.Errorf("#%d.deny: m = %t, want %t", i, m, false)
-		}
-	}
-
-	for i := 0; i < len(managep); i++ {
-		m := acl.Manage(append(managep, managep[:i]...))
-		if m == false {
-			t.Errorf("#%d.allow: m = %t, want %t", i, m, true)
-		}
-	}
-}
-
-func TestACLRevoke(t *testing.T) {
-	readp := []byte("foobar")
-	acl := newTestEmpty()
-	acl.GrantRead(readp)
-	if !acl.Read(readp) {
-		t.Errorf("r = %t, want %t", false, true)
-	}
-
-	acl.RevokeRead(readp)
-	if acl.Read(readp) {
-		t.Errorf("r = %t, want %t", true, false)
-	}
-}
-
-func newTestEmpty() ACL {
-	return &acl{}
-}