Mirror Zhanlu client: GLM tool_stream, shared v4 UUID request id, drop chat state:ERROR

internal/util/util.go

@@ -2,7 +2,12 @@
 // avoid divergent same-named copies.
 package util
 
-import "strings"
+import (
+	"crypto/rand"
+	"fmt"
+	"strings"
+	"time"
+)
 
 // FirstNonEmpty returns the first trimmed-non-empty value, or "" when none of
 // the values are non-empty. Callers that need a specific fallback for the
@@ -15,3 +20,17 @@ func FirstNonEmpty(values ...string) string {
 	}
 	return ""
 }
+
+// RandomRequestID returns a random v4 UUID string, matching the format the
+// Zhanlu plugin sends in the `request` header of every gateway call
+// (crypto.randomUUID()). Extracted so the login and phone-code paths share
+// one implementation.
+func RandomRequestID() string {
+	b := make([]byte, 16)
+	if _, err := rand.Read(b); err != nil {
+		return fmt.Sprintf("%d", time.Now().UnixNano())
+	}
+	b[6] = (b[6] & 0x0f) | 0x40
+	b[8] = (b[8] & 0x3f) | 0x80
+	return fmt.Sprintf("%x-%x-%x-%x-%x", b[0:4], b[4:6], b[6:8], b[8:10], b[10:])
+}