update kubernetes dependencies to v1.25.0

Signed-off-by: Humble Chirammal <hchiramm@redhat.com>

vendor/google.golang.org/grpc/internal/metadata/metadata.go

@@ -22,6 +22,9 @@
 package metadata
 
 import (
+	"fmt"
+	"strings"
+
 	"google.golang.org/grpc/metadata"
 	"google.golang.org/grpc/resolver"
 )
@@ -30,14 +33,38 @@ type mdKeyType string
 
 const mdKey = mdKeyType("grpc.internal.address.metadata")
 
+type mdValue metadata.MD
+
+func (m mdValue) Equal(o interface{}) bool {
+	om, ok := o.(mdValue)
+	if !ok {
+		return false
+	}
+	if len(m) != len(om) {
+		return false
+	}
+	for k, v := range m {
+		ov := om[k]
+		if len(ov) != len(v) {
+			return false
+		}
+		for i, ve := range v {
+			if ov[i] != ve {
+				return false
+			}
+		}
+	}
+	return true
+}
+
 // Get returns the metadata of addr.
 func Get(addr resolver.Address) metadata.MD {
 	attrs := addr.Attributes
 	if attrs == nil {
 		return nil
 	}
-	md, _ := attrs.Value(mdKey).(metadata.MD)
-	return md
+	md, _ := attrs.Value(mdKey).(mdValue)
+	return metadata.MD(md)
 }
 
 // Set sets (overrides) the metadata in addr.
@@ -45,6 +72,49 @@ func Get(addr resolver.Address) metadata.MD {
 // When a SubConn is created with this address, the RPCs sent on it will all
 // have this metadata.
 func Set(addr resolver.Address, md metadata.MD) resolver.Address {
-	addr.Attributes = addr.Attributes.WithValues(mdKey, md)
+	addr.Attributes = addr.Attributes.WithValue(mdKey, mdValue(md))
 	return addr
 }
+
+// Validate returns an error if the input md contains invalid keys or values.
+//
+// If the header is not a pseudo-header, the following items are checked:
+// - header names must contain one or more characters from this set [0-9 a-z _ - .].
+// - if the header-name ends with a "-bin" suffix, no validation of the header value is performed.
+// - otherwise, the header value must contain one or more characters from the set [%x20-%x7E].
+func Validate(md metadata.MD) error {
+	for k, vals := range md {
+		// pseudo-header will be ignored
+		if k[0] == ':' {
+			continue
+		}
+		// check key, for i that saving a conversion if not using for range
+		for i := 0; i < len(k); i++ {
+			r := k[i]
+			if !(r >= 'a' && r <= 'z') && !(r >= '0' && r <= '9') && r != '.' && r != '-' && r != '_' {
+				return fmt.Errorf("header key %q contains illegal characters not in [0-9a-z-_.]", k)
+			}
+		}
+		if strings.HasSuffix(k, "-bin") {
+			continue
+		}
+		// check value
+		for _, val := range vals {
+			if hasNotPrintable(val) {
+				return fmt.Errorf("header key %q contains value with non-printable ASCII characters", k)
+			}
+		}
+	}
+	return nil
+}
+
+// hasNotPrintable return true if msg contains any characters which are not in %x20-%x7E
+func hasNotPrintable(msg string) bool {
+	// for i that saving a conversion if not using for range
+	for i := 0; i < len(msg); i++ {
+		if msg[i] < 0x20 || msg[i] > 0x7E {
+			return true
+		}
+	}
+	return false
+}