From 420799228d8e4e2d9dcd588110f2bde77a2cd837 Mon Sep 17 00:00:00 2001
From: Eric Kohl <eric.kohl@reactos.org>
Date: Sun, 2 Nov 2025 22:37:16 +0100
Subject: [PATCH] [NETSH] Implement the -r (remote) option and set machine
 command

Also:
- Start all usage texts with a newline.
- Add some error messages.
- Fix a bug in the command interpreter.
---
 base/applications/network/netsh/context.c     | 49 +++++++++++++++++--
 base/applications/network/netsh/interpreter.c | 13 +++--
 base/applications/network/netsh/lang/en-US.rc | 35 +++++++------
 base/applications/network/netsh/netsh.c       | 31 ++++++++++--
 base/applications/network/netsh/precomp.h     |  3 ++
 base/applications/network/netsh/resource.h    | 14 +++---
 6 files changed, 111 insertions(+), 34 deletions(-)

diff --git a/base/applications/network/netsh/context.c b/base/applications/network/netsh/context.c
index 86f17cf1ee2..379415d407b 100644
--- a/base/applications/network/netsh/context.c
+++ b/base/applications/network/netsh/context.c
@@ -29,6 +29,8 @@ PCONTEXT_ENTRY pCurrentContext = NULL;
 PCONTEXT_STACK_ENTRY pContextStackHead = NULL;
 PCONTEXT_STACK_ENTRY pContextStackTail = NULL;
 
+PWSTR pszMachine = NULL;
+
 static BOOL bOnline = TRUE; 
 
 /* FUNCTIONS ******************************************************************/
@@ -707,6 +709,43 @@ PushdCommand(
 }
 
 
+DWORD
+WINAPI
+SetMachineCommand(
+    _In_ LPCWSTR pwszMachine,
+    _In_ LPWSTR *argv,
+    _In_ DWORD dwCurrentIndex,
+    _In_ DWORD dwArgCount,
+    _In_ DWORD dwFlags,
+    _In_ LPCVOID pvData,
+    _Out_ BOOL *pbDone)
+{
+    DWORD dwError = ERROR_SUCCESS;
+
+    DPRINT("SetMachineCommand(pwszMachine %S  dwCurrentIndex %lu  dwArgCount %lu)\n",
+           pwszMachine, dwCurrentIndex, dwArgCount);
+
+    if ((dwArgCount - dwCurrentIndex) > 1)
+        return ERROR_SHOW_USAGE;
+
+    if (pszMachine != NULL)
+    {
+        HeapFree(GetProcessHeap(), 0, pszMachine);
+        pszMachine = NULL;
+    }
+
+    if ((dwArgCount - dwCurrentIndex) == 1)
+    {
+        pszMachine = HeapAlloc(GetProcessHeap(), 0, (sizeof(argv[dwCurrentIndex]) + 1) * sizeof(WCHAR));
+        if (pszMachine == NULL)
+            return ERROR_NOT_ENOUGH_MEMORY;
+        wcscpy(pszMachine, argv[dwCurrentIndex]);
+    }
+
+    return dwError;
+}
+
+
 DWORD
 WINAPI
 SetModeCommand(
@@ -720,9 +759,10 @@ SetModeCommand(
 {
     DWORD dwError = ERROR_SUCCESS;
 
-    DPRINT("SetModeCommand()\n");
+    DPRINT("SetModeCommand(pwszMachine %S  dwCurrentIndex %lu  dwArgCount %lu)\n",
+           pwszMachine, dwCurrentIndex, dwArgCount);
 
-    if (dwArgCount != 3)
+    if ((dwArgCount - dwCurrentIndex) != 1)
         return ERROR_SHOW_USAGE;
 
     if (!_wcsicmp(argv[dwCurrentIndex], L"offline"))
@@ -771,7 +811,7 @@ CreateRootContext(VOID)
     if (pRootContext == NULL)
         return FALSE;
 
-    pRootContext->hModule = GetModuleHandle(NULL);
+    pRootContext->hModule = hModule;
 
     AddContextCommand(pRootContext, L"..",      UpCommand,      IDS_HLP_UP,      IDS_HLP_UP_EX, 0);
     AddContextCommand(pRootContext, L"?",       NULL,           IDS_HLP_HELP,    IDS_HLP_HELP_EX, 0);
@@ -803,7 +843,8 @@ CreateRootContext(VOID)
     pGroup = AddCommandGroup(pRootContext, L"set", IDS_HLP_GROUP_SET, 0);
     if (pGroup)
     {
-        AddGroupCommand(pGroup, L"mode",   SetModeCommand,   IDS_HLP_SET_MODE,   IDS_HLP_SET_MODE_EX, 0);
+        AddGroupCommand(pGroup, L"machine", SetMachineCommand, IDS_HLP_SET_MACHINE, IDS_HLP_SET_MACHINE_EX, 0);
+        AddGroupCommand(pGroup, L"mode",    SetModeCommand,    IDS_HLP_SET_MODE,    IDS_HLP_SET_MODE_EX, 0);
     }
 
     pGroup = AddCommandGroup(pRootContext, L"show", IDS_HLP_GROUP_SHOW, 0);
diff --git a/base/applications/network/netsh/interpreter.c b/base/applications/network/netsh/interpreter.c
index f3e039e4563..d5503fc7592 100644
--- a/base/applications/network/netsh/interpreter.c
+++ b/base/applications/network/netsh/interpreter.c
@@ -205,7 +205,7 @@ InterpretCommand(
                 if (pCommand->pfnCmdHandler != NULL)
                 {
                     dwArgIndex++;
-                    dwError = pCommand->pfnCmdHandler(NULL, argv, dwArgIndex, dwArgCount, 0, NULL, bDone);
+                    dwError = pCommand->pfnCmdHandler(pszMachine, argv, dwArgIndex, dwArgCount, 0, NULL, bDone);
                     if (dwError != ERROR_SUCCESS)
                     {
                         if (dwError == ERROR_SHOW_USAGE)
@@ -317,7 +317,8 @@ InterpretCommand(
         }
     }
 
-    return ERROR_CMD_NOT_FOUND;
+    /* Done */
+    return ERROR_SUCCESS;
 } 
 
 
@@ -365,7 +366,7 @@ InterpretLine(
 
 VOID
 PrintPrompt(
-    PCONTEXT_ENTRY pContext)
+    _In_ PCONTEXT_ENTRY pContext)
 {
     if (pContext != pRootContext)
     {
@@ -394,6 +395,8 @@ InterpretInteractive(VOID)
         memset(args_vector, 0, sizeof(args_vector));
 
         /* Shown just before the input where the user places commands */
+        if (pszMachine)
+            ConPrintf(StdOut, L"[%s] ", pszMachine);
         PrintPrompt(pCurrentContext);
         ConPuts(StdOut, L">");
 
@@ -423,7 +426,9 @@ InterpretInteractive(VOID)
         dwError = InterpretCommand(args_vector, dwArgCount, &bDone);
         if (dwError == ERROR_CMD_NOT_FOUND)
         {
-            ConResPrintf(StdErr, IDS_INVALID_COMMAND, input_line);
+            PWSTR pszCommandString = MergeStrings(args_vector, dwArgCount);
+            ConResPrintf(StdErr, IDS_INVALID_COMMAND, pszCommandString);
+            HeapFree(GetProcessHeap(), 0, pszCommandString);
         }
 
         if (bDone)
diff --git a/base/applications/network/netsh/lang/en-US.rc b/base/applications/network/netsh/lang/en-US.rc
index bb474ac7812..8cdaac1f666 100644
--- a/base/applications/network/netsh/lang/en-US.rc
+++ b/base/applications/network/netsh/lang/en-US.rc
@@ -26,47 +26,50 @@ BEGIN
     IDS_SUBCONTEXT_HEADER "\nThe following sub-contexts are available:\n"
 
     IDS_HLP_UP             "Goes up one context level.\n"
-    IDS_HLP_UP_EX          "Usage: %1!s!\n\n        Goes up one context level.\n"
+    IDS_HLP_UP_EX          "\nUsage: %1!s!\n\n        Goes up one context level.\n"
     IDS_HLP_EXIT           "Exits the program.\n"
-    IDS_HLP_EXIT_EX        "Usage: %1!s!\n\n        Exits the program.\n"
+    IDS_HLP_EXIT_EX        "\nUsage: %1!s!\n\n        Exits the program.\n"
     IDS_HLP_HELP           "Displays a list of commands.\n"
-    IDS_HLP_HELP_EX        "Usage: %1!s!\n\n        Displays a list of commands.\n"
+    IDS_HLP_HELP_EX        "\nUsage: %1!s!\n\n        Displays a list of commands.\n"
     IDS_HLP_POPD           "Changes to the context on the stack.\n"
-    IDS_HLP_POPD_EX        "Usage: %1!s!\n\n        Changes to the context on the stack.\n"
+    IDS_HLP_POPD_EX        "\nUsage: %1!s!\n\n        Changes to the context on the stack.\n"
     IDS_HLP_PUSHD          "Stores the current context on the stack.\n"
-    IDS_HLP_PUSHD_EX       "Usage: %1!s!\n\n        Stores the current context on the stack.\n"
+    IDS_HLP_PUSHD_EX       "\nUsage: %1!s!\n\n        Stores the current context on the stack.\n"
     IDS_HLP_EXEC           "Runs a script file.\n"
-    IDS_HLP_EXEC_EX        "Usage: %1!s! <script file name>\n\n        Loads the script file and runs it.\n"
+    IDS_HLP_EXEC_EX        "\nUsage: %1!s! <script file name>\n\n        Loads the script file and runs it.\n"
     IDS_HLP_DUMP           "Displays a configuration script.\n"
-    IDS_HLP_DUMP_EX        "Usage: %1!s!\n\n        Creates a script that contains the current configuration. If saved to a\n\
+    IDS_HLP_DUMP_EX        "\nUsage: %1!s!\n\n        Creates a script that contains the current configuration. If saved to a\n\
         file, the script can be used to altered configuration settings.\n"
     IDS_HLP_OFFLINE        "Sets the current mode to offline.\n"
-    IDS_HLP_OFFLINE_EX     "Usage: %1!s!\n\n        Sets the current mode to offline. Changes made while in offline mode\n\
+    IDS_HLP_OFFLINE_EX     "\nUsage: %1!s!\n\n        Sets the current mode to offline. Changes made while in offline mode\n\
         are saved and made in the running configuration when the mode is\n        switched back to online.\n"
     IDS_HLP_ONLINE         "Sets the current mode to online.\n"
-    IDS_HLP_ONLINE_EX      "Usage: %1!s!\n\n        Sets the current mode to online. Changes made while in online mode are\n\
+    IDS_HLP_ONLINE_EX      "\nUsage: %1!s!\n\n        Sets the current mode to online. Changes made while in online mode are\n\
         immediately reflected in the running configuration. If changes are\n        made while in offline mode, they are reflected in the running\n\
         configuration when the mode is switched back to online.\n"
     IDS_HLP_ABORT          "Discards changes made while in offline mode.\n"
-    IDS_HLP_ABORT_EX       "Usage: %1!s!\n\n        Discards changes made while in the offline mode. This does not affect\n\
+    IDS_HLP_ABORT_EX       "\nUsage: %1!s!\n\n        Discards changes made while in the offline mode. This does not affect\n\
         changes made while in online mode.\n"
     IDS_HLP_COMMIT         "Commits changes made while in offline mode.\n"
-    IDS_HLP_COMMIT_EX      "Usage: %1!s!\n\n        Commits changes to the running configuration that were made while in\n\
+    IDS_HLP_COMMIT_EX      "\nUsage: %1!s!\n\n        Commits changes to the running configuration that were made while in\n\
         offline mode. No action is taken for this command while in online\n        mode.\n"
 
     IDS_HLP_ADD_HELPER     "Installs a helper DLL.\n"
-    IDS_HLP_ADD_HELPER_EX  "Usage: %1!s! <dll file name>\n\n        Installs the specified helper DLL in netsh.\n"
+    IDS_HLP_ADD_HELPER_EX  "\nUsage: %1!s! <dll file name>\n\n        Installs the specified helper DLL in netsh.\n"
 
     IDS_HLP_DEL_HELPER     "Removes a helper DLL.\n"
-    IDS_HLP_DEL_HELPER_EX  "Usage: %1!s! <dll file name>\n\n        Removes the specified helper DLL from netsh.\n"
+    IDS_HLP_DEL_HELPER_EX  "\nUsage: %1!s! <dll file name>\n\n        Removes the specified helper DLL from netsh.\n"
 
+    IDS_HLP_SET_MACHINE    "Sets the current machine on which to operate.\n"
+    IDS_HLP_SET_MACHINE_EX "\nUsage: %1!s! [[name=]<string>]\n\n        Sets the current machine on which to operate. If a machine name\n\
+        is not specified, the local machine is used.\n"
     IDS_HLP_SET_MODE       "Sets the current mode to online or offline.\n"
-    IDS_HLP_SET_MODE_EX    "Usage: %1!s! [mode=]{online|offline}\n\n        Sets the current mode to online or offline.\n"
+    IDS_HLP_SET_MODE_EX    "\nUsage: %1!s! [mode=]{online|offline}\n\n        Sets the current mode to online or offline.\n"
 
     IDS_HLP_SHOW_HELPER    "Lists all the top-level helpers.\n"
-    IDS_HLP_SHOW_HELPER_EX "Usage: %1!s!\n\n        Lists all the top-level helpers.\n"
+    IDS_HLP_SHOW_HELPER_EX "\nUsage: %1!s!\n\n        Lists all the top-level helpers.\n"
     IDS_HLP_SHOW_MODE      "Shows the current mode.\n"
-    IDS_HLP_SHOW_MODE_EX   "Usage: %1!s!\n\n        Shows the current mode (offline or online).\n"
+    IDS_HLP_SHOW_MODE_EX   "\nUsage: %1!s!\n\n        Shows the current mode (offline or online).\n"
 
     IDS_HLP_GROUP_ADD      "Adds a configuration entry to a list of entries.\n"
     IDS_HLP_GROUP_DELETE   "Deletes a configuration entry from a list of entries.\n"
diff --git a/base/applications/network/netsh/netsh.c b/base/applications/network/netsh/netsh.c
index f0f092b32f9..a6f4785556d 100644
--- a/base/applications/network/netsh/netsh.c
+++ b/base/applications/network/netsh/netsh.c
@@ -12,6 +12,10 @@
 #define NDEBUG
 #include <debug.h>
 
+/* GLOBALS ********************************************************************/
+
+HMODULE hModule = NULL;
+
 /* FUNCTIONS ******************************************************************/
 
 DWORD
@@ -95,6 +99,8 @@ wmain(
 
     DPRINT("wmain(%S)\n", GetCommandLineW());
 
+    hModule = GetModuleHandle(NULL);
+
     /* Initialize the Console Standard Streams */
     ConInitStdStreams();
 
@@ -171,8 +177,15 @@ wmain(
             if ((index + 1) < argc)
             {
                 index++;
-                ConPuts(StdOut, L"\nThe -r option is not implemented yet\n");
-//                remote = argv[index];
+                pszMachine = HeapAlloc(GetProcessHeap(), 0, (wcslen(argv[index]) + 1) * sizeof(WCHAR));
+                if (pszMachine == NULL)
+                {
+                    dwError = ERROR_NOT_ENOUGH_MEMORY;
+                    PrintError(hModule, dwError);
+                    goto done;
+                }
+
+                wcscpy(pszMachine, argv[index]);
             }
             else
             {
@@ -192,8 +205,14 @@ wmain(
             else if (pszCommand == NULL)
             {
                 pszCommand = MergeStrings((LPWSTR*)&argv[index], argc - index);
-                if (pszCommand)
-                    break;
+                if (pszCommand == NULL)
+                {
+                    dwError = ERROR_NOT_ENOUGH_MEMORY;
+                    PrintError(hModule, dwError);
+                    goto done;
+                }
+
+                break;
             }
         }
     }
@@ -222,8 +241,12 @@ wmain(
 
 done:
     /* FIXME: Cleanup code goes here */
+    if (pszMachine != NULL)
+        HeapFree(GetProcessHeap(), 0, pszMachine);
+
     if (pszCommand != NULL)
         HeapFree(GetProcessHeap(), 0, pszCommand);
+
     CleanupContext();
     UnloadHelpers();
 
diff --git a/base/applications/network/netsh/precomp.h b/base/applications/network/netsh/precomp.h
index e80a977fb27..ef2162c6638 100644
--- a/base/applications/network/netsh/precomp.h
+++ b/base/applications/network/netsh/precomp.h
@@ -132,6 +132,9 @@ extern PCONTEXT_ENTRY pCurrentContext;
 
 extern PHELPER_ENTRY pHelperListHead;
 
+extern HMODULE hModule;
+extern PWSTR pszMachine;
+
 /* PROTOTYPES *****************************************************************/
 
 /* context.c */
diff --git a/base/applications/network/netsh/resource.h b/base/applications/network/netsh/resource.h
index ca24c701632..5cce164fddb 100644
--- a/base/applications/network/netsh/resource.h
+++ b/base/applications/network/netsh/resource.h
@@ -48,12 +48,14 @@
 #define IDS_HLP_ADD_HELPER_EX    341
 #define IDS_HLP_DEL_HELPER       342
 #define IDS_HLP_DEL_HELPER_EX    343
-#define IDS_HLP_SET_MODE         344
-#define IDS_HLP_SET_MODE_EX      345
-#define IDS_HLP_SHOW_HELPER      346
-#define IDS_HLP_SHOW_HELPER_EX   347
-#define IDS_HLP_SHOW_MODE        348
-#define IDS_HLP_SHOW_MODE_EX     349
+#define IDS_HLP_SET_MACHINE      344
+#define IDS_HLP_SET_MACHINE_EX   345
+#define IDS_HLP_SET_MODE         346
+#define IDS_HLP_SET_MODE_EX      347
+#define IDS_HLP_SHOW_HELPER      348
+#define IDS_HLP_SHOW_HELPER_EX   349
+#define IDS_HLP_SHOW_MODE        350
+#define IDS_HLP_SHOW_MODE_EX     351
 
 #define IDS_HLP_GROUP_ADD        360
 #define IDS_HLP_GROUP_DELETE     361