rebase: vendor dependencies for Vault API

Uses github.com/libopenstorage/secrets to communicate with Vault. This
removes the need for maintaining our own limited Vault APIs.

By adding the new dependency, several other packages got updated in the
process. Unused indirect dependencies have been removed from go.mod.

Signed-off-by: Niels de Vos <ndevos@redhat.com>

vendor/golang.org/x/sys/windows/dll_windows.go

@@ -104,6 +104,35 @@ func (d *DLL) MustFindProc(name string) *Proc {
 	return p
 }
 
+// FindProcByOrdinal searches DLL d for procedure by ordinal and returns *Proc
+// if found. It returns an error if search fails.
+func (d *DLL) FindProcByOrdinal(ordinal uintptr) (proc *Proc, err error) {
+	a, e := GetProcAddressByOrdinal(d.Handle, ordinal)
+	name := "#" + itoa(int(ordinal))
+	if e != nil {
+		return nil, &DLLError{
+			Err:     e,
+			ObjName: name,
+			Msg:     "Failed to find " + name + " procedure in " + d.Name + ": " + e.Error(),
+		}
+	}
+	p := &Proc{
+		Dll:  d,
+		Name: name,
+		addr: a,
+	}
+	return p, nil
+}
+
+// MustFindProcByOrdinal is like FindProcByOrdinal but panics if search fails.
+func (d *DLL) MustFindProcByOrdinal(ordinal uintptr) *Proc {
+	p, e := d.FindProcByOrdinal(ordinal)
+	if e != nil {
+		panic(e)
+	}
+	return p
+}
+
 // Release unloads DLL d from memory.
 func (d *DLL) Release() (err error) {
 	return FreeLibrary(d.Handle)

vendor/golang.org/x/sys/windows/env_windows.go

@@ -8,7 +8,6 @@ package windows
 
 import (
 	"syscall"
-	"unicode/utf16"
 	"unsafe"
 )
 
@@ -40,17 +39,11 @@ func (token Token) Environ(inheritExisting bool) (env []string, err error) {
 	defer DestroyEnvironmentBlock(block)
 	blockp := uintptr(unsafe.Pointer(block))
 	for {
-		entry := (*[(1 << 30) - 1]uint16)(unsafe.Pointer(blockp))[:]
-		for i, v := range entry {
-			if v == 0 {
-				entry = entry[:i]
-				break
-			}
-		}
+		entry := UTF16PtrToString((*uint16)(unsafe.Pointer(blockp)))
 		if len(entry) == 0 {
 			break
 		}
-		env = append(env, string(utf16.Decode(entry)))
+		env = append(env, entry)
 		blockp += 2 * (uintptr(len(entry)) + 1)
 	}
 	return env, nil

vendor/golang.org/x/sys/windows/security_windows.go

@@ -7,6 +7,8 @@ package windows
 import (
 	"syscall"
 	"unsafe"
+
+	"golang.org/x/sys/internal/unsafeheader"
 )
 
 const (
@@ -1229,7 +1231,7 @@ func (sd *SECURITY_DESCRIPTOR) String() string {
 		return ""
 	}
 	defer LocalFree(Handle(unsafe.Pointer(sddl)))
-	return UTF16ToString((*[(1 << 30) - 1]uint16)(unsafe.Pointer(sddl))[:])
+	return UTF16PtrToString(sddl)
 }
 
 // ToAbsolute converts a self-relative security descriptor into an absolute one.
@@ -1307,9 +1309,17 @@ func (absoluteSD *SECURITY_DESCRIPTOR) ToSelfRelative() (selfRelativeSD *SECURIT
 }
 
 func (selfRelativeSD *SECURITY_DESCRIPTOR) copySelfRelativeSecurityDescriptor() *SECURITY_DESCRIPTOR {
-	sdBytes := make([]byte, selfRelativeSD.Length())
-	copy(sdBytes, (*[(1 << 31) - 1]byte)(unsafe.Pointer(selfRelativeSD))[:len(sdBytes)])
-	return (*SECURITY_DESCRIPTOR)(unsafe.Pointer(&sdBytes[0]))
+	sdLen := (int)(selfRelativeSD.Length())
+
+	var src []byte
+	h := (*unsafeheader.Slice)(unsafe.Pointer(&src))
+	h.Data = unsafe.Pointer(selfRelativeSD)
+	h.Len = sdLen
+	h.Cap = sdLen
+
+	dst := make([]byte, sdLen)
+	copy(dst, src)
+	return (*SECURITY_DESCRIPTOR)(unsafe.Pointer(&dst[0]))
 }
 
 // SecurityDescriptorFromString converts an SDDL string describing a security descriptor into a
@@ -1391,6 +1401,6 @@ func ACLFromEntries(explicitEntries []EXPLICIT_ACCESS, mergedACL *ACL) (acl *ACL
 	}
 	defer LocalFree(Handle(unsafe.Pointer(winHeapACL)))
 	aclBytes := make([]byte, winHeapACL.aclSize)
-	copy(aclBytes, (*[(1 << 31) - 1]byte)(unsafe.Pointer(winHeapACL))[:len(aclBytes)])
+	copy(aclBytes, (*[(1 << 31) - 1]byte)(unsafe.Pointer(winHeapACL))[:len(aclBytes):len(aclBytes)])
 	return (*ACL)(unsafe.Pointer(&aclBytes[0])), nil
 }

vendor/golang.org/x/sys/windows/syscall_windows.go

@@ -13,6 +13,8 @@ import (
 	"time"
 	"unicode/utf16"
 	"unsafe"
+
+	"golang.org/x/sys/internal/unsafeheader"
 )
 
 type Handle uintptr
@@ -117,6 +119,32 @@ func UTF16PtrFromString(s string) (*uint16, error) {
 	return &a[0], nil
 }
 
+// UTF16PtrToString takes a pointer to a UTF-16 sequence and returns the corresponding UTF-8 encoded string.
+// If the pointer is nil, this returns the empty string. This assumes that the UTF-16 sequence is terminated
+// at a zero word; if the zero word is not present, the program may crash.
+func UTF16PtrToString(p *uint16) string {
+	if p == nil {
+		return ""
+	}
+	if *p == 0 {
+		return ""
+	}
+
+	// Find NUL terminator.
+	n := 0
+	for ptr := unsafe.Pointer(p); *(*uint16)(ptr) != 0; n++ {
+		ptr = unsafe.Pointer(uintptr(ptr) + unsafe.Sizeof(*p))
+	}
+
+	var s []uint16
+	h := (*unsafeheader.Slice)(unsafe.Pointer(&s))
+	h.Data = unsafe.Pointer(p)
+	h.Len = n
+	h.Cap = n
+
+	return string(utf16.Decode(s))
+}
+
 func Getpagesize() int { return 4096 }
 
 // NewCallback converts a Go function to a function pointer conforming to the stdcall calling convention.
@@ -1181,7 +1209,12 @@ type IPv6Mreq struct {
 	Interface uint32
 }
 
-func GetsockoptInt(fd Handle, level, opt int) (int, error) { return -1, syscall.EWINDOWS }
+func GetsockoptInt(fd Handle, level, opt int) (int, error) {
+	v := int32(0)
+	l := int32(unsafe.Sizeof(v))
+	err := Getsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&v)), &l)
+	return int(v), err
+}
 
 func SetsockoptLinger(fd Handle, level, opt int, l *Linger) (err error) {
 	sys := sysLinger{Onoff: uint16(l.Onoff), Linger: uint16(l.Linger)}
@@ -1378,7 +1411,7 @@ func (t Token) KnownFolderPath(folderID *KNOWNFOLDERID, flags uint32) (string, e
 		return "", err
 	}
 	defer CoTaskMemFree(unsafe.Pointer(p))
-	return UTF16ToString((*[(1 << 30) - 1]uint16)(unsafe.Pointer(p))[:]), nil
+	return UTF16PtrToString(p), nil
 }
 
 // RtlGetVersion returns the version of the underlying operating system, ignoring