[PATCH v2 0/3] MR3473: whoami: Refactor and add more commands.

[Maxim Karasev (＠mxkrsv)]

Particularly it implements '/upn', '/logonid' and '/user' options,
where the first one uses newly added NameUserPrincipal format in GetUserNameExW.

--
  v2: whoami: Refactor and add more commands.

https://gitlab.winehq.org/wine/wine/-/merge_requests/3473

[PATCH v2 1/3] secur32: Improve NameSamCompatible format in GetUserNameExW.

[Maxim Karasev]

From: Maxim Karasev

---
 dlls/secur32/secur32.c | 60 +++++++++++++++++++++++++++---------------
 1 file changed, 39 insertions(+), 21 deletions(-)

diff --git a/dlls/secur32/secur32.c b/dlls/secur32/secur32.c
index d703757bae7..beb52d7d6da 100644
--- a/dlls/secur32/secur32.c
+++ b/dlls/secur32/secur32.c
@@ -1108,31 +1108,49 @@ BOOLEAN WINAPI GetUserNameExW(
     {
     case NameSamCompatible:
         {
-            WCHAR samname[UNLEN + 1 + MAX_COMPUTERNAME_LENGTH + 1];
-            LPWSTR out;
-            DWORD len;
+            WCHAR *output;
+            DWORD len = 0;
+            BOOL status;

-            /* This assumes the current user is always a local account */
-            len = MAX_COMPUTERNAME_LENGTH + 1;
-            if (GetComputerNameW(samname, &len))
+            status = GetComputerNameExW(ComputerNameDnsHostname, NULL, &len);
+            if (status || GetLastError() != ERROR_MORE_DATA)
             {
-                out = samname + lstrlenW(samname);
-                *out++ = '\';
-                len = UNLEN + 1;
-                if (GetUserNameW(out, &len))
-                {
-                    if (lstrlenW(samname) < *nSize)
-                    {
-                        lstrcpyW(lpNameBuffer, samname);
-                        *nSize = lstrlenW(samname);
-                        return TRUE;
-                    }
+                ERR("GetComputerNameExW expected ERROR_MORE_DATA, error %lu\n", GetLastError());
+                return FALSE;
+            }

-                    SetLastError(ERROR_MORE_DATA);
-                    *nSize = lstrlenW(samname) + 1;
-                }
+            output = HeapAlloc(GetProcessHeap(), 0, sizeof(WCHAR) * (len + 1 + UNLEN + 1));
+
+            status = GetComputerNameExW(ComputerNameDnsHostname, output, &len);
+            if (!status)
+            {
+                ERR("GetComputerNameExW failed, error %lu\n", GetLastError());
+                return FALSE;
             }
-            return FALSE;
+
+            wcscat(output, L"\");
+
+            len = UNLEN + 1;
+
+            status = GetUserNameW(&output[wcslen(output)], &len);
+            if (!status)
+            {
+                ERR("GetUserNameW failed, error %lu\n", GetLastError());
+                return FALSE;
+            }
+
+            if (lstrlenW(output) >= *nSize)
+            {
+                TRACE("Output buffer too small\n");
+                SetLastError(ERROR_MORE_DATA);
+                *nSize = lstrlenW(output) + 1;
+                return FALSE;
+            }
+
+            lstrcpyW(lpNameBuffer, output);
+            *nSize = lstrlenW(output);
+
+            return TRUE;
         }

case NameUnknown:

[PATCH v2 2/3] secur32: Implement NameUserPrincipal format in GetUserNameExW.

[Maxim Karasev]

From: Maxim Karasev

---
 dlls/secur32/secur32.c | 47 +++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 46 insertions(+), 1 deletion(-)

diff --git a/dlls/secur32/secur32.c b/dlls/secur32/secur32.c
index beb52d7d6da..1b1a91950bb 100644
--- a/dlls/secur32/secur32.c
+++ b/dlls/secur32/secur32.c
@@ -1153,12 +1153,57 @@ BOOLEAN WINAPI GetUserNameExW(
             return TRUE;
         }

+    case NameUserPrincipal:
+        {
+            WCHAR *output;
+            DWORD len = 0;
+            BOOL status;
+            DWORD username_len = UNLEN + 1;
+
+            status = GetComputerNameExW(ComputerNameDnsFullyQualified, NULL, &len);
+            if (status || GetLastError() != ERROR_MORE_DATA)
+            {
+                ERR("GetComputerNameExW expected ERROR_MORE_DATA, error %lu\n", GetLastError());
+                return FALSE;
+            }
+
+            output = HeapAlloc(GetProcessHeap(), 0, sizeof(WCHAR) * (username_len + 1 + len));
+
+            status = GetUserNameW(output, &username_len);
+            if (!status)
+            {
+                ERR("GetUserNameW failed, error %lu\n", GetLastError());
+                return FALSE;
+            }
+
+            wcscat(output, L"@");
+
+            status = GetComputerNameExW(ComputerNameDnsFullyQualified, &output[wcslen(output)], &len);
+            if (!status)
+            {
+                ERR("GetComputerNameExW failed, error %lu\n", GetLastError());
+                return FALSE;
+            }
+
+            if (lstrlenW(output) >= *nSize)
+            {
+                TRACE("Output buffer too small\n");
+                SetLastError(ERROR_MORE_DATA);
+                *nSize = lstrlenW(output) + 1;
+                return FALSE;
+            }
+
+            lstrcpyW(lpNameBuffer, output);
+            *nSize = lstrlenW(output);
+
+            return TRUE;
+        }
+
     case NameUnknown:
     case NameFullyQualifiedDN:
     case NameDisplay:
     case NameUniqueId:
     case NameCanonical:
-    case NameUserPrincipal:
     case NameCanonicalEx:
     case NameServicePrincipal:
     case NameDnsDomain:

[PATCH v2 3/3] whoami: Refactor and add more commands.

[Maxim Karasev]

From: Maxim Karasev

Particularly it implements '/upn', '/logonid' and '/user' options,
where the first one uses newly added NameUserPrincipal format in GetUserNameExW.
---
 programs/whoami/Makefile.in |   2 +-
 programs/whoami/main.c      | 295 ++++++++++++++++++++++++++++++++----
 2 files changed, 269 insertions(+), 28 deletions(-)

diff --git a/programs/whoami/Makefile.in b/programs/whoami/Makefile.in
index 4898a96f456..5be08c702a8 100644
--- a/programs/whoami/Makefile.in
+++ b/programs/whoami/Makefile.in
@@ -1,5 +1,5 @@
 MODULE    = whoami.exe
-IMPORTS   = secur32
+IMPORTS   = secur32 advapi32

EXTRADLLFLAGS = -mconsole -municode

diff --git a/programs/whoami/main.c b/programs/whoami/main.c
index 7e93de998ef..4f545bf38b4 100644
--- a/programs/whoami/main.c
+++ b/programs/whoami/main.c
@@ -1,5 +1,6 @@
 /*
  * Copyright 2020 Brendan Shanks for CodeWeavers
+ * Copyright 2023 Maxim Karasev 
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -16,78 +17,318 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */

+#define WIN32_LEAN_AND_MEAN
 #define SECURITY_WIN32
 #include <windows.h>
 #include <security.h>
+#include <sddl.h>
+#include <stdarg.h>

#include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(whoami);

-static int output_write(const WCHAR* str, int len)
+/* Behaves like the regular wprintf, but is able to fall back to the OEMCP
+ * when redirected.
+ * Most importantly, it prints fully in Unicode by default,
+ * so any language characters are shown regardless of the current locale.
+ */
+static int unicode_wprintf(const WCHAR *fmt, ...)
 {
     DWORD count;
-    if (!WriteConsoleW(GetStdHandle(STD_OUTPUT_HANDLE), str, len, &count, NULL))
+    BOOL status;
+    int formatted_len;
+    int formatted_len2;
+    WCHAR *formatted;
+    va_list args;
+
+    va_start(args, fmt);
+
+    formatted_len = vswprintf(NULL, 0, fmt, args);
+
+    formatted = HeapAlloc(GetProcessHeap(), 0, (formatted_len + 1) * sizeof(WCHAR));
+
+    formatted_len2 = vswprintf(formatted, formatted_len + 1, fmt, args);
+    if (formatted_len2 != formatted_len)
+    {
+        ERR("formatted_len mismatch: %d != %d\n", formatted_len, formatted_len2);
+        return 0;
+    }
+
+    va_end(args);
+
+    status = WriteConsoleW(GetStdHandle(STD_OUTPUT_HANDLE), formatted, formatted_len,
+            &count, NULL);
+    if (!status)
     {
         DWORD lenA;
-        char* strA;
+        char *strA;

/* On Windows WriteConsoleW() fails if the output is redirected. So fall
          * back to WriteFile() with OEM code page.
          */
-        lenA = WideCharToMultiByte(GetOEMCP(), 0, str, len,
+        lenA = WideCharToMultiByte(GetOEMCP(), 0, formatted, formatted_len,
                                    NULL, 0, NULL, NULL);
         strA = HeapAlloc(GetProcessHeap(), 0, lenA);
         if (!strA)
             return 0;

-        WideCharToMultiByte(GetOEMCP(), 0, str, len, strA, lenA,
+        WideCharToMultiByte(GetOEMCP(), 0, formatted, formatted_len, strA, lenA,
                             NULL, NULL);
         WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), strA, lenA, &count, FALSE);
         HeapFree(GetProcessHeap(), 0, strA);
     }
+
+    HeapFree(GetProcessHeap(), 0, formatted);
+
     return count;
 }

-int __cdecl wmain(int argc, WCHAR *argv[])
+static BOOL get_user_name(EXTENDED_NAME_FORMAT name_format, WCHAR **name)
 {
-    WCHAR *buf = NULL;
-    ULONG size = 0;
+    ULONG size;
     BOOL result;

-    if (argc > 1)
+    result = GetUserNameExW(name_format, NULL, &size);
+    if (result || GetLastError() != ERROR_MORE_DATA)
     {
-        int i;
+        ERR("GetUserNameExW expected ERROR_MORE_DATA, error %ld\n", GetLastError());
+        return FALSE;
+    }

-        WINE_FIXME("unsupported arguments:");
-        for (i = 0; i < argc; i++)
-            WINE_FIXME(" %s", wine_dbgstr_w(argv[i]));
-        WINE_FIXME("\n");
+    *name = HeapAlloc(GetProcessHeap(), 0, size * sizeof(WCHAR));
+    if (!*name)
+    {
+        ERR("Memory allocation failed\n");
+        return FALSE;
     }

-    result = GetUserNameExW(NameSamCompatible, NULL, &size);
-    if (result || GetLastError() != ERROR_MORE_DATA)
+    result = GetUserNameExW(name_format, *name, &size);
+    if (!result)
+    {
+        ERR("GetUserNameExW failed, error %ld\n", GetLastError());
+        return FALSE;
+    }
+
+    return TRUE;
+}
+
+static BOOL get_process_sid(PSID *sid)
+{
+    HANDLE token_handle;
+    DWORD buf[256]; /* GetTokenInformation wants a dword-aligned buffer */
+    TOKEN_USER *token_user = (TOKEN_USER*)buf;
+    DWORD token_user_len;
+    BOOL err;
+
+    err = OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &token_handle);
+    if (!err)
+    {
+        ERR("OpenProcessToken failed, error %ld\n", GetLastError());
+        return FALSE;
+    }
+
+    err = GetTokenInformation(token_handle, TokenUser, (void*)buf,
+            sizeof(buf), &token_user_len);
+    if (!err)
+    {
+        ERR("GetTokenInformation failed, error %ld\n", GetLastError());
+        return FALSE;
+    }
+
+    token_user_len = GetLengthSid(token_user->User.Sid);
+    *sid = HeapAlloc(GetProcessHeap(), 0, token_user_len);
+    if (!*sid)
+    {
+        ERR("Memory allocation failed\n");
+        return FALSE;
+    }
+
+    err = CopySid(token_user_len, *sid, token_user->User.Sid);
+    if (!err)
+    {
+        ERR("CopySid failed, error %ld\n", GetLastError());
+        return FALSE;
+    }
+
+    *sid = token_user->User.Sid;
+
+    return TRUE;
+}
+
+static BOOL get_logon_sid(PSID *sid)
+{
+    HANDLE token_handle;
+    DWORD buf[256]; /* GetTokenInformation wants a dword-aligned buffer */
+    TOKEN_GROUPS *token_groups = (TOKEN_GROUPS*)buf;
+    DWORD token_groups_len;
+    BOOL err;
+    DWORD i;
+
+    err = OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &token_handle);
+    if (!err)
+    {
+        ERR("OpenProcessToken failed, error %ld\n", GetLastError());
+        return FALSE;
+    }
+
+    err = GetTokenInformation(token_handle, TokenGroups, (void*)buf,
+            sizeof(buf), &token_groups_len);
+    if (!err)
+    {
+        ERR("GetTokenInformation failed, error %ld\n", GetLastError());
+        return FALSE;
+    }
+
+    for (i = 0; i < token_groups->GroupCount; i++)
+    {
+        if ((token_groups->Groups[i].Attributes & SE_GROUP_LOGON_ID) == SE_GROUP_LOGON_ID)
+        {
+            token_groups_len = GetLengthSid(token_groups->Groups[i].Sid);
+            *sid = HeapAlloc(GetProcessHeap(), 0, token_groups_len);
+            if (!*sid)
+            {
+                ERR("Memory allocation failed\n");
+                return FALSE;
+            }
+
+            err = CopySid(token_groups_len, *sid, token_groups->Groups[i].Sid);
+            if (!err)
+            {
+                ERR("CopySid failed, error %ld\n", GetLastError());
+                return FALSE;
+            }
+            break;
+        }
+    }
+
+    return TRUE;
+}
+
+static int simple(EXTENDED_NAME_FORMAT name_format)
+{
+    WCHAR *name;
+    BOOL result;
+
+    result = get_user_name(name_format, &name);
+    if (!result)
     {
-        WINE_ERR("GetUserNameExW failed, result %d, error %ld\n", result, GetLastError());
+        ERR("get_user_name failed\n");
         return 1;
     }

-    buf = HeapAlloc(GetProcessHeap(), 0, size * sizeof(WCHAR));
-    if (!buf)
+    unicode_wprintf(L"%ls\n", name);
+
+    HeapFree(GetProcessHeap(), 0, name);
+
+    return 0;
+}
+
+static int logon_id(void)
+{
+    PSID sid;
+    BOOL status;
+    WCHAR *sid_string;
+
+    status = get_logon_sid(&sid);
+    if (!status)
     {
-        WINE_ERR("Memory allocation failed\n");
+        ERR("get_logon_sid failed\n");
         return 1;
     }

-    result = GetUserNameExW(NameSamCompatible, buf, &size);
-    if (result)
+    status = ConvertSidToStringSidW(sid, &sid_string);
+    if (!status)
     {
-        output_write(buf, size);
-        output_write(L"\r\n", 2);
+        ERR("ConvertSidToStringSidW failed, error %ld\n", GetLastError());
+        return 1;
     }
-    else
-        WINE_ERR("GetUserNameExW failed, error %ld\n", GetLastError());

-    HeapFree(GetProcessHeap(), 0, buf);
+    unicode_wprintf(L"%ls\n", sid_string);
+
+    HeapFree(GetProcessHeap(), 0, sid);
+    LocalFree(sid_string);
+
     return 0;
 }
+
+static int user(void)
+{
+    PSID sid;
+    BOOL status;
+    WCHAR *name;
+    WCHAR *sid_string;
+
+    status = get_user_name(NameSamCompatible, &name);
+    if (!status)
+    {
+        ERR("get_user_name failed\n");
+        return 1;
+    }
+
+    status = get_process_sid(&sid);
+    if (!status)
+    {
+        ERR("get_process_sid failed\n");
+        return 1;
+    }
+
+    status = ConvertSidToStringSidW(sid, &sid_string);
+    if (!status)
+    {
+        ERR("ConvertSidToStringSidW failed, error %ld\n", GetLastError());
+        return 1;
+    }
+
+    /* TODO: prettify the table */
+    unicode_wprintf(L"\n");
+    unicode_wprintf(L"%ls\n", L"USER INFORMATION");
+    unicode_wprintf(L"%ls\n", L"----------------");
+    unicode_wprintf(L"\n");
+    unicode_wprintf(L"%ls %ls\n", L"User Name                ", L"SID");
+    unicode_wprintf(L"%ls %ls\n", L"=========================", L"===============================");
+    unicode_wprintf(L"%-25ls %ls\n", name, sid_string);
+
+    HeapFree(GetProcessHeap(), 0, name);
+    HeapFree(GetProcessHeap(), 0, sid);
+    LocalFree(sid_string);
+
+    return 0;
+}
+
+int __cdecl wmain(int argc, WCHAR *argv[])
+{
+    if (argv[1] == NULL)
+    {
+
+        return simple(NameSamCompatible);
+    }
+    else
+    {
+        wcslwr(argv[1]);
+
+        if (!wcscmp(argv[1], L"/upn"))
+        {
+            return simple(NameUserPrincipal);
+        }
+        else if (!wcscmp(argv[1], L"/logonid"))
+        {
+            return logon_id();
+        }
+        else if (!wcscmp(argv[1], L"/user"))
+        {
+            return user();
+        }
+        else if (!wcscmp(argv[1], L"/fqdn"))
+        {
+            /* Needs NameFullyQualifiedDN format in GetUserNameExW */
+            FIXME("stub\n");
+            return 0;
+        }
+        else
+        {
+            FIXME("stub\n");
+            return 0;
+        }
+    }
+}