Paul Gofman : wtsapi32: Implement WTSEnumerateSessionsA() on top of WTSEnumerateSessionsW().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 7c248ff4c4ae72c7498ebc61f74022f3f6d40799
URL:    https://gitlab.winehq.org/wine/wine/-/commit/7c248ff4c4ae72c7498ebc61f74022f...

Author: Paul Gofman <pgofman(a)codeweavers.com>
Date:   Thu Sep  7 10:51:07 2023 -0600

wtsapi32: Implement WTSEnumerateSessionsA() on top of WTSEnumerateSessionsW().

---

 dlls/wtsapi32/tests/wtsapi.c | 10 +++++++-
 dlls/wtsapi32/wtsapi32.c     | 55 ++++++++++++++++++++++++++++++++++++--------
 2 files changed, 55 insertions(+), 10 deletions(-)

diff --git a/dlls/wtsapi32/tests/wtsapi.c b/dlls/wtsapi32/tests/wtsapi.c
index 39634985dae..cac5da94e77 100644
--- a/dlls/wtsapi32/tests/wtsapi.c
+++ b/dlls/wtsapi32/tests/wtsapi.c
@@ -310,14 +310,19 @@ static void test_WTSEnumerateSessions(void)
 {
     BOOL console_found = FALSE, services_found = FALSE;
     WTS_SESSION_INFOW *info;
+    WTS_SESSION_INFOA *infoA;
+    DWORD count, count2;
     unsigned int i;
-    DWORD count;
     BOOL bret;
 
     bret = WTSEnumerateSessionsW(WTS_CURRENT_SERVER_HANDLE, 0, 1, &info, &count);
     ok(bret, "got error %lu.\n", GetLastError());
     todo_wine_if(count == 1) ok(count >= 2, "got %lu.\n", count);
 
+    bret = WTSEnumerateSessionsA(WTS_CURRENT_SERVER_HANDLE, 0, 1, &infoA, &count2);
+    ok(bret, "got error %lu.\n", GetLastError());
+    ok(count2 == count, "got %lu.\n", count2);
+
     for (i = 0; i < count; ++i)
     {
         trace("SessionId %lu, name %s, State %d.\n", info[i].SessionId, debugstr_w(info[i].pWinStationName), info[i].State);
@@ -325,17 +330,20 @@ static void test_WTSEnumerateSessions(void)
         {
             console_found = TRUE;
             ok(info[i].State == WTSActive, "got State %d.\n", info[i].State);
+            ok(!strcmp(infoA[i].pWinStationName, "Console"), "got %s.\n", debugstr_a(infoA[i].pWinStationName));
         }
         else if (!wcscmp(info[i].pWinStationName, L"Services"))
         {
             services_found = TRUE;
             ok(info[i].State == WTSDisconnected, "got State %d.\n", info[i].State);
+            ok(!strcmp(infoA[i].pWinStationName, "Services"), "got %s.\n", debugstr_a(infoA[i].pWinStationName));
         }
     }
     ok(console_found, "Console session not found.\n");
     todo_wine ok(services_found, "Services session not found.\n");
 
     WTSFreeMemory(info);
+    WTSFreeMemory(infoA);
 }
 
 START_TEST (wtsapi)
diff --git a/dlls/wtsapi32/wtsapi32.c b/dlls/wtsapi32/wtsapi32.c
index 0071922d866..6eaea8d3c6f 100644
--- a/dlls/wtsapi32/wtsapi32.c
+++ b/dlls/wtsapi32/wtsapi32.c
@@ -266,7 +266,6 @@ BOOL WINAPI WTSEnumerateServersW(LPWSTR pDomainName, DWORD Reserved, DWORD Versi
     return FALSE;
 }
 
-
 /************************************************************
  *                WTSEnumerateEnumerateSessionsExW  (WTSAPI32.@)
  */
@@ -290,19 +289,57 @@ BOOL WINAPI WTSEnumerateSessionsExA(HANDLE server, DWORD *level, DWORD filter, W
 /************************************************************
  *                WTSEnumerateEnumerateSessionsA  (WTSAPI32.@)
  */
-BOOL WINAPI WTSEnumerateSessionsA(HANDLE hServer, DWORD Reserved, DWORD Version,
-    PWTS_SESSION_INFOA* ppSessionInfo, DWORD* pCount)
+BOOL WINAPI WTSEnumerateSessionsA(HANDLE server, DWORD reserved, DWORD version,
+        PWTS_SESSION_INFOA *session_info, DWORD *count)
 {
-    static int once;
+    PWTS_SESSION_INFOW infoW;
+    DWORD size, offset;
+    unsigned int i;
+    int len;
 
-    if (!once++) FIXME("Stub %p 0x%08lx 0x%08lx %p %p\n", hServer, Reserved, Version,
-          ppSessionInfo, pCount);
+    TRACE("%p 0x%08lx 0x%08lx %p %p.\n", server, reserved, version, session_info, count);
 
-    if (!ppSessionInfo || !pCount) return FALSE;
+    if (!session_info || !count) return FALSE;
 
-    *pCount = 0;
-    *ppSessionInfo = NULL;
+    if (!WTSEnumerateSessionsW(server, reserved, version, &infoW, count)) return FALSE;
+
+    size = 0;
+    for (i = 0; i < *count; ++i)
+    {
+        if (!(len = WideCharToMultiByte(CP_ACP, 0, infoW[i].pWinStationName, -1, NULL, 0, NULL, NULL)))
+        {
+            ERR("WideCharToMultiByte failed.\n");
+            WTSFreeMemory(infoW);
+            return FALSE;
+        }
+        size += sizeof(**session_info) + len;
+    }
+
+    if (!(*session_info = heap_alloc(size)))
+    {
+        WTSFreeMemory(infoW);
+        SetLastError(ERROR_OUTOFMEMORY);
+        return FALSE;
+    }
+
+    offset = *count * sizeof(**session_info);
+    for (i = 0; i < *count; ++i)
+    {
+        (*session_info)[i].State = infoW[i].State;
+        (*session_info)[i].SessionId = infoW[i].SessionId;
+        (*session_info)[i].pWinStationName = (char *)(*session_info) + offset;
+        len = WideCharToMultiByte(CP_ACP, 0, infoW[i].pWinStationName, -1, (*session_info)[i].pWinStationName,
+                size - offset, NULL, NULL);
+        if (!len)
+        {
+            ERR("WideCharToMultiByte failed.\n");
+            WTSFreeMemory(*session_info);
+            WTSFreeMemory(infoW);
+        }
+        offset += len;
+    }
 
+    WTSFreeMemory(infoW);
     return TRUE;
 }