From 2e13f97a62cea02ccff182847ed50644c89efad4 Mon Sep 17 00:00:00 2001
From: Eric Kohl <eric.kohl@reactos.org>
Date: Sun, 24 May 2026 10:57:35 +0200
Subject: [PATCH] [DHCPCSVC][REACTOS] Pass the SendParams parameter to the
 RequestParams server function

---
 base/services/dhcpcsvc/dhcp/api.c    | 13 +++++++++----
 base/services/dhcpcsvc/dhcpcsvc.c    |  2 +-
 sdk/include/reactos/idl/dhcpcsvc.idl | 27 ++++++++++++++++++++++++++-
 3 files changed, 36 insertions(+), 6 deletions(-)

diff --git a/base/services/dhcpcsvc/dhcp/api.c b/base/services/dhcpcsvc/dhcp/api.c
index f9bc794cee3..1abaf57763b 100644
--- a/base/services/dhcpcsvc/dhcp/api.c
+++ b/base/services/dhcpcsvc/dhcp/api.c
@@ -348,7 +348,6 @@ Server_RemoveDNSRegistrations(
     return ERROR_SUCCESS;
 }
 
-
 /* Function 7 */
 DWORD
 __stdcall
@@ -356,11 +355,17 @@ Server_RequestParams(
     _In_ PDHCP_SERVER_NAME ServerName,
     _In_ LPWSTR AdapterName,
     _In_ DHCPCAPI_CLASSID *ClassId,
-    _In_ DWORD Unknown4,
+    _In_ DHCPCAPI_PARAMS_ARRAY *SendParams,
     _In_ DWORD Unknown5,
     _In_ DWORD Unknown6)
 {
-    DPRINT1("Server_RequestParams(%S %p)\n", AdapterName, ClassId);
-    UNIMPLEMENTED;
+    DPRINT1("Server_RequestParams(%S %p %p %lx %lx)\n",
+            AdapterName, ClassId, SendParams, Unknown5, Unknown6);
+
+    if (SendParams != NULL)
+    {
+        DPRINT1("SendParams nParams %lu  Params %p\n", SendParams->nParams, SendParams->Params);
+    }
+
     return ERROR_SUCCESS;
 }
diff --git a/base/services/dhcpcsvc/dhcpcsvc.c b/base/services/dhcpcsvc/dhcpcsvc.c
index 0908394b885..4016e0b0e2b 100644
--- a/base/services/dhcpcsvc/dhcpcsvc.c
+++ b/base/services/dhcpcsvc/dhcpcsvc.c
@@ -701,7 +701,7 @@ DhcpRequestParams(
         ret = Client_RequestParams(NULL,
                                    AdapterName,
                                    ClassId,
-                                   0,
+                                   &SendParams,
                                    0,
                                    0);
     }
diff --git a/sdk/include/reactos/idl/dhcpcsvc.idl b/sdk/include/reactos/idl/dhcpcsvc.idl
index 4db71233a57..f6717016154 100644
--- a/sdk/include/reactos/idl/dhcpcsvc.idl
+++ b/sdk/include/reactos/idl/dhcpcsvc.idl
@@ -7,6 +7,31 @@
 typedef [handle] wchar_t *PDHCP_SERVER_NAME;
 
 cpp_quote("#ifndef _DHCPCSDK_")
+typedef struct _DHCPAPI_PARAMS
+{
+    ULONG  Flags;
+    ULONG  OptionId;
+    BOOL   IsVendor;
+#if defined(__midl) || defined(__WIDL__)
+    [size_is(nBytesData), unique] LPBYTE Data;
+#else
+    LPBYTE Data;
+#endif
+    DWORD  nBytesData;
+} DHCPAPI_PARAMS, *PDHCPAPI_PARAMS, *LPDHCPAPI_PARAMS;
+
+typedef struct _DHCPAPI_PARAMS DHCPCAPI_PARAMS, *PDHCPCAPI_PARAMS, *LPDHCPCAPI_PARAMS;
+
+typedef struct _DHCPCAPI_PARAMS_ARARAY
+{
+    ULONG             nParams;
+#if defined(__midl) || defined(__WIDL__)
+    [size_is(nParams), unique] LPDHCPCAPI_PARAMS Params;
+#else
+    LPDHCPCAPI_PARAMS Params;
+#endif
+} DHCPCAPI_PARAMS_ARRAY, *PDHCPCAPI_PARAMS_ARRAY, *LPDHCPCAPI_PARAMS_ARRAY;
+
 typedef struct _DHCPCAPI_CLASSID
 {
     ULONG  Flags;
@@ -91,7 +116,7 @@ interface dhcpcsvc
         [in, unique, string] PDHCP_SERVER_NAME ServerName,
         [in, string] LPWSTR AdapterName,
         [in, unique] DHCPCAPI_CLASSID *ClassId,
-        [in] DWORD Unknown4,
+        [in, unique] DHCPCAPI_PARAMS_ARRAY *SendParams,
         [in] DWORD Unknown5,
         [in] DWORD Unknown6);
 }