Added appletGetMainAppletAvailableUsers.

nx/include/switch/services/applet.h

@@ -1437,6 +1437,16 @@ Result appletGetCurrentApplicationId(u64 *titleID);
  */
 Result appletRequestExitToSelf(void);
 
+/**
+ * @brief Gets an array of userIDs for the MainApplet AvailableUsers.
+ * @note Only available with AppletType_LibraryApplet on [6.0.0+].
+ * @param[out] userIDs Output array of userIDs.
+ * @param[in] count Size of the userID array, must be at least ACC_USER_LIST_SIZE.
+ * @param[out] flag When true, this indicates that no users are available.
+ * @param[out] total_out Total output entries. This is -1 when flag is true.
+ */
+Result appletGetMainAppletAvailableUsers(u128 *userIDs, s32 count, bool *flag, s32 *total_out);
+
 // IFunctions for AppletType_OverlayApplet (IOverlayFunctions).
 
 /**

nx/source/services/applet.c

@@ -4252,6 +4252,50 @@ Result appletRequestExitToSelf(void) {
     return _appletCmdNoIO(&g_appletILibraryAppletSelfAccessor, 80);
 }
 
+Result appletGetMainAppletAvailableUsers(u128 *userIDs, s32 count, bool *flag, s32 *total_out) {
+    if (__nx_applet_type != AppletType_LibraryApplet)
+        return MAKERESULT(Module_Libnx, LibnxError_NotInitialized);
+    if (hosversionBefore(6,0,0))
+        return MAKERESULT(Module_Libnx, LibnxError_IncompatSysVer);
+
+    IpcCommand c;
+    ipcInitialize(&c);
+
+    ipcAddRecvBuffer(&c, userIDs, count*sizeof(u128), BufferType_Normal);
+
+    struct {
+        u64 magic;
+        u64 cmd_id;
+    } *raw;
+
+    raw = serviceIpcPrepareHeader(&g_appletILibraryAppletSelfAccessor, &c, sizeof(*raw));
+
+    raw->magic = SFCI_MAGIC;
+    raw->cmd_id = 110;
+
+    Result rc = serviceIpcDispatch(&g_appletILibraryAppletSelfAccessor);
+
+    if (R_SUCCEEDED(rc)) {
+        IpcParsedCommand r;
+        struct {
+            u64 magic;
+            u64 result;
+            u8 flag;
+            s32 total_out;
+        } *resp;
+
+        serviceIpcParse(&g_appletILibraryAppletSelfAccessor, &r, sizeof(*resp));
+        resp = r.Raw;
+
+        rc = resp->result;
+
+        if (R_SUCCEEDED(rc) && flag) *flag = resp->flag!=0;
+        if (R_SUCCEEDED(rc) && total_out) *total_out = resp->total_out;
+    }
+
+    return rc;
+}
+
 // IOverlayFunctions
 
 Result appletBeginToWatchShortHomeButtonMessage(void) {