vendor: update wincred to v1.1.0

Signed-off-by: Tibor Vass <tibor@docker.com>

vendor/github.com/danieljoos/wincred/sys.go

@@ -0,0 +1,143 @@
+// +build windows
+
+package wincred
+
+import (
+	"reflect"
+	"syscall"
+	"unsafe"
+)
+
+var (
+	modadvapi32 = syscall.NewLazyDLL("advapi32.dll")
+
+	procCredRead      proc = modadvapi32.NewProc("CredReadW")
+	procCredWrite     proc = modadvapi32.NewProc("CredWriteW")
+	procCredDelete    proc = modadvapi32.NewProc("CredDeleteW")
+	procCredFree      proc = modadvapi32.NewProc("CredFree")
+	procCredEnumerate proc = modadvapi32.NewProc("CredEnumerateW")
+)
+
+// Interface for syscall.Proc: helps testing
+type proc interface {
+	Call(a ...uintptr) (r1, r2 uintptr, lastErr error)
+}
+
+// https://docs.microsoft.com/en-us/windows/desktop/api/wincred/ns-wincred-_credentialw
+type sysCREDENTIAL struct {
+	Flags              uint32
+	Type               uint32
+	TargetName         *uint16
+	Comment            *uint16
+	LastWritten        syscall.Filetime
+	CredentialBlobSize uint32
+	CredentialBlob     uintptr
+	Persist            uint32
+	AttributeCount     uint32
+	Attributes         uintptr
+	TargetAlias        *uint16
+	UserName           *uint16
+}
+
+// https://docs.microsoft.com/en-us/windows/desktop/api/wincred/ns-wincred-_credential_attributew
+type sysCREDENTIAL_ATTRIBUTE struct {
+	Keyword   *uint16
+	Flags     uint32
+	ValueSize uint32
+	Value     uintptr
+}
+
+// https://docs.microsoft.com/en-us/windows/desktop/api/wincred/ns-wincred-_credentialw
+type sysCRED_TYPE uint32
+
+const (
+	sysCRED_TYPE_GENERIC                 sysCRED_TYPE = 0x1
+	sysCRED_TYPE_DOMAIN_PASSWORD         sysCRED_TYPE = 0x2
+	sysCRED_TYPE_DOMAIN_CERTIFICATE      sysCRED_TYPE = 0x3
+	sysCRED_TYPE_DOMAIN_VISIBLE_PASSWORD sysCRED_TYPE = 0x4
+	sysCRED_TYPE_GENERIC_CERTIFICATE     sysCRED_TYPE = 0x5
+	sysCRED_TYPE_DOMAIN_EXTENDED         sysCRED_TYPE = 0x6
+
+	// https://docs.microsoft.com/en-us/windows/desktop/Debug/system-error-codes
+	sysERROR_NOT_FOUND         = syscall.Errno(1168)
+	sysERROR_INVALID_PARAMETER = syscall.Errno(87)
+)
+
+// https://docs.microsoft.com/en-us/windows/desktop/api/wincred/nf-wincred-credreadw
+func sysCredRead(targetName string, typ sysCRED_TYPE) (*Credential, error) {
+	var pcred *sysCREDENTIAL
+	targetNamePtr, _ := syscall.UTF16PtrFromString(targetName)
+	ret, _, err := procCredRead.Call(
+		uintptr(unsafe.Pointer(targetNamePtr)),
+		uintptr(typ),
+		0,
+		uintptr(unsafe.Pointer(&pcred)),
+	)
+	if ret == 0 {
+		return nil, err
+	}
+	defer procCredFree.Call(uintptr(unsafe.Pointer(pcred)))
+
+	return sysToCredential(pcred), nil
+}
+
+// https://docs.microsoft.com/en-us/windows/desktop/api/wincred/nf-wincred-credwritew
+func sysCredWrite(cred *Credential, typ sysCRED_TYPE) error {
+	ncred := sysFromCredential(cred)
+	ncred.Type = uint32(typ)
+	ret, _, err := procCredWrite.Call(
+		uintptr(unsafe.Pointer(ncred)),
+		0,
+	)
+	if ret == 0 {
+		return err
+	}
+
+	return nil
+}
+
+// https://docs.microsoft.com/en-us/windows/desktop/api/wincred/nf-wincred-creddeletew
+func sysCredDelete(cred *Credential, typ sysCRED_TYPE) error {
+	targetNamePtr, _ := syscall.UTF16PtrFromString(cred.TargetName)
+	ret, _, err := procCredDelete.Call(
+		uintptr(unsafe.Pointer(targetNamePtr)),
+		uintptr(typ),
+		0,
+	)
+	if ret == 0 {
+		return err
+	}
+
+	return nil
+}
+
+// https://docs.microsoft.com/en-us/windows/desktop/api/wincred/nf-wincred-credenumeratew
+func sysCredEnumerate(filter string, all bool) ([]*Credential, error) {
+	var count int
+	var pcreds uintptr
+	var filterPtr *uint16
+	if !all {
+		filterPtr, _ = syscall.UTF16PtrFromString(filter)
+	}
+	ret, _, err := procCredEnumerate.Call(
+		uintptr(unsafe.Pointer(filterPtr)),
+		0,
+		uintptr(unsafe.Pointer(&count)),
+		uintptr(unsafe.Pointer(&pcreds)),
+	)
+	if ret == 0 {
+		return nil, err
+	}
+	defer procCredFree.Call(pcreds)
+	credsSlice := *(*[]*sysCREDENTIAL)(unsafe.Pointer(&reflect.SliceHeader{
+		Data: pcreds,
+		Len:  count,
+		Cap:  count,
+	}))
+	creds := make([]*Credential, count, count)
+	for i, cred := range credsSlice {
+		creds[i] = sysToCredential(cred)
+	}
+
+	return creds, nil
+}