Added ns impl, and added nsGetApplicationControlData. Imported nacp.h from nx-hbmenu with adjustments.

nx/include/switch.h

@@ -13,6 +13,7 @@ extern "C" {
 #include "switch/result.h"
 
 #include "switch/nro.h"
+#include "switch/nacp.h"
 
 #include "switch/arm/tls.h"
 #include "switch/arm/cache.h"
@@ -45,6 +46,7 @@ extern "C" {
 #include "switch/services/irs.h"
 #include "switch/services/vi.h"
 #include "switch/services/nv.h"
+#include "switch/services/ns.h"
 #include "switch/services/pm.h"
 #include "switch/services/set.h"
 

nx/include/switch/nacp.h

@@ -0,0 +1,48 @@
+/**
+ * @file nro.h
+ * @brief Control.nacp structure.
+ * @copyright libnx Authors
+ */
+
+#pragma once
+
+/// Language entry. These strings are UTF-8.
+typedef struct {
+    char name[0x200];
+    char author[0x100];
+} NacpLanguageEntry;
+
+typedef struct {
+    NacpLanguageEntry lang[16];
+
+    u8  x3000_unk[0x24];////Normally all-zero?
+    u32 x3024_unk;
+    u32 x3028_unk;
+    u32 x302C_unk;
+    u32 x3030_unk;
+    u32 x3034_unk;
+    u64 titleID0;
+
+    u8 x3040_unk[0x20];
+    char version[0x10];
+
+    u64 titleID_DlcBase;
+    u64 titleID1;
+
+    u32 x3080_unk;
+    u32 x3084_unk;
+    u32 x3088_unk;
+    u8 x308C_unk[0x24];//zeros?
+
+    u64 titleID2;
+    u64 titleIDs[7];//"Array of application titleIDs, normally the same as the above app-titleIDs. Only set for game-updates?"
+
+    u32 x30F0_unk;
+    u32 x30F4_unk;
+
+    u64 titleID3;//"Application titleID. Only set for game-updates?"
+
+    char bcatPassphrase[0x40];
+    u8 x3140_unk[0xEC0];//Normally all-zero?
+} NacpStruct;
+

nx/include/switch/services/ns.h

@@ -0,0 +1,19 @@
+/**
+ * @file ns.h
+ * @brief NS service IPC wrapper.
+ * @author yellows8
+ * @copyright libnx Authors
+ */
+#pragma once
+#include "../types.h"
+#include "../nacp.h"
+
+typedef struct {
+    NacpStruct nacp;
+    u8 icon[0x20000];//JPEG
+} nsApplicationControlData;
+
+Result nsInitialize(void);
+void nsExit(void);
+
+Result nsGetApplicationControlData(u8 flag, u64 titleID, nsApplicationControlData* buffer, size_t size, size_t* actual_size);

nx/source/services/ns.c

@@ -0,0 +1,67 @@
+#include "types.h"
+#include "result.h"
+#include "arm/atomics.h"
+#include "kernel/ipc.h"
+#include "services/sm.h"
+#include "services/ns.h"
+
+//TODO: >=3.0.0 support.
+
+static Service g_nsSrv;
+static u64 g_nsRefCnt;
+
+Result nsInitialize(void)
+{
+    atomicIncrement64(&g_nsRefCnt);
+
+    if (serviceIsActive(&g_nsSrv))
+        return 0;
+
+    return smGetService(&g_nsSrv, "ns:am");//This will fail on >=3.0.0.
+}
+
+void nsExit(void)
+{
+    if (atomicDecrement64(&g_nsRefCnt) == 0) {
+        serviceClose(&g_nsSrv);
+    }
+}
+
+Result nsGetApplicationControlData(u8 flag, u64 titleID, nsApplicationControlData* buffer, size_t size, size_t* actual_size) {
+    IpcCommand c;
+    ipcInitialize(&c);
+    ipcAddRecvBuffer(&c, buffer, size, 0);
+
+    struct {
+        u64 magic;
+        u64 cmd_id;
+        u8 flag;
+        u64 titleID;
+    } *raw;
+
+    raw = ipcPrepareHeader(&c, sizeof(*raw));
+
+    raw->magic = SFCI_MAGIC;
+    raw->cmd_id = 400;
+    raw->flag = flag;
+    raw->titleID = titleID;
+
+    Result rc = serviceIpcDispatch(&g_nsSrv);
+
+    if (R_SUCCEEDED(rc)) {
+        IpcParsedCommand r;
+        ipcParse(&r);
+
+        struct {
+            u64 magic;
+            u64 result;
+            u64 actual_size;
+        } *resp = r.Raw;
+
+        rc = resp->result;
+
+        if (R_SUCCEEDED(rc) && actual_size) *actual_size = resp->actual_size;
+    }
+
+    return rc;
+}