Initial QSfera import

Server/vendor/github.com/maxymania/go-system/posix_acl/posix_acl.go

@@ -0,0 +1,107 @@
+/*
+ * Copyright(C) 2015 Simon Schmidt
+ * 
+ * This Source Code Form is subject to the terms of the
+ * Mozilla Public License, v. 2.0. If a copy of the MPL
+ * was not distributed with this file, You can obtain one at
+ * http://mozilla.org/MPL/2.0/.
+ */
+
+/*
+ This Package models POSIX-ACLs including their representation as Xattrs.
+ */
+package posix_acl
+
+import "bytes"
+import "encoding/binary"
+import "fmt"
+
+const ACL_USER_OWNER  = 0x0001
+const ACL_USER        = 0x0002
+const ACL_GROUP_OWNER = 0x0004
+const ACL_GROUP       = 0x0008
+const ACL_MASK        = 0x0010
+const ACL_OTHERS      = 0x0020
+
+type AclSID uint64
+func (a *AclSID) SetUid(uid uint32) {
+	*a = AclSID(uid)|(ACL_USER<<32)
+}
+func (a *AclSID) SetGid(gid uint32) {
+	*a = AclSID(gid)|(ACL_GROUP<<32)
+}
+// One of ACL_* (Except ACL_ACCESS/ACL_DEFAULTS)
+func (a *AclSID) SetType(tp int) {
+	*a = AclSID(tp)<<32
+}
+// One of ACL_* (Except ACL_ACCESS/ACL_DEFAULTS)
+func (a AclSID) GetType() int {
+	return int(a>>32)
+}
+func (a AclSID) GetID() uint32 {
+	return uint32(a&0xffffffff)
+}
+func (a AclSID) String() string {
+	switch(a>>32){
+	case ACL_USER_OWNER:return "u::"
+	case ACL_USER:return fmt.Sprintf("u:%v:",a.GetID())
+	case ACL_GROUP_OWNER:return "g::"
+	case ACL_GROUP:return fmt.Sprintf("g:%v:",a.GetID())
+	case ACL_MASK:return "m::"
+	case ACL_OTHERS:return "o::"
+	}
+	return "?:"
+}
+
+type AclElement struct{
+	AclSID
+	Perm uint16
+}
+func (a AclElement) String() string {
+	str := ""
+	if (a.Perm&4)!=0 { str+="r" }
+	if (a.Perm&2)!=0 { str+="w" }
+	if (a.Perm&1)!=0 { str+="x" }
+	return fmt.Sprintf("%v%v",a.AclSID,str)
+}
+
+type Acl struct{
+	Version uint32
+	List []AclElement
+}
+func (a *Acl)Decode(xattr []byte) {
+	var elem AclElement
+	ae := new(aclElem)
+	nr := bytes.NewReader(xattr)
+	e := binary.Read(nr,binary.LittleEndian,&a.Version)
+	if e!=nil { a.Version=0; return }
+	if len(a.List)>0 {
+		a.List=a.List[:0]
+	}
+	for binary.Read(nr,binary.LittleEndian,ae)==nil {
+		elem.AclSID = (AclSID(ae.Tag)<<32) | AclSID(ae.Id)
+		elem.Perm = ae.Perm
+		a.List = append(a.List,elem)
+	}
+}
+func (a *Acl)Encode() []byte {
+	buf := new(bytes.Buffer)
+	ae := new(aclElem)
+	binary.Write(buf,binary.LittleEndian,&a.Version)
+	for _,elem := range a.List {
+		ae.Tag = uint16(elem.GetType())
+		ae.Perm = elem.Perm
+		ae.Id = elem.GetID()
+		binary.Write(buf,binary.LittleEndian,ae)
+	}
+	return buf.Bytes()
+}
+
+type aclElem struct{
+	Tag uint16
+	Perm uint16
+	Id uint32
+}
+
+
+

Server/vendor/github.com/maxymania/go-system/posix_acl/xattrs.go

@@ -0,0 +1,53 @@
+/*
+ * Copyright(C) 2015 Simon Schmidt
+ * 
+ * This Source Code Form is subject to the terms of the
+ * Mozilla Public License, v. 2.0. If a copy of the MPL
+ * was not distributed with this file, You can obtain one at
+ * http://mozilla.org/MPL/2.0/.
+ */
+
+package posix_acl
+
+import "syscall"
+import "github.com/maxymania/go-system/syscall_x"
+
+type AclType string
+
+const ACL_ACCESS = AclType("system.posix_acl_access")
+const ACL_DEFAULTS = AclType("system.posix_acl_default")
+
+// t: ACL_ACCESS or ACL_DEFAULTS
+func (a *Acl)LoadF(fd int, t AclType) error {
+	sz,err := syscall_x.Fgetxattr(fd,string(t),nil)
+	if err!=nil { return err }
+	buffer := make([]byte,sz)
+	sz,err = syscall_x.Fgetxattr(fd,string(t),buffer)
+	if err!=nil { return err }
+	a.Decode(buffer[:sz])
+	return nil
+}
+// t: ACL_ACCESS or ACL_DEFAULTS
+func (a *Acl)StoreF(fd int, t AclType) error {
+	data := a.Encode()
+	err := syscall_x.Fsetxattr(fd,string(t),data,0)
+	return err
+}
+// t: ACL_ACCESS or ACL_DEFAULTS
+func (a *Acl)Load(fn string, t AclType) error {
+	sz,err := syscall.Getxattr(fn,string(t),nil)
+	if err!=nil { return err }
+	buffer := make([]byte,sz)
+	sz,err = syscall.Getxattr(fn,string(t),buffer)
+	if err!=nil { return err }
+	a.Decode(buffer[:sz])
+	return nil
+}
+// t: ACL_ACCESS or ACL_DEFAULTS
+func (a *Acl)Store(fn string, t AclType) error {
+	data := a.Encode()
+	err := syscall.Setxattr(fn,string(t),data,0)
+	return err
+}
+
+