From 91f33b6d489ef95d508ec214c037fcd8e6e2a37e Mon Sep 17 00:00:00 2001
From: Dmitry Isaenko <developer.su@gmail.com>
Date: Fri, 30 Aug 2019 08:49:00 +0300
Subject: [PATCH] NPDM KAC improvements

---
 README.md                                     |  4 +-
 src/main/java/konogonka/RainbowHexDump.java   |  4 +
 .../ACID/KernelAccessControlProvider.java     | 82 ++++++++++++++++++-
 3 files changed, 87 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index 59aa9e4..1d188ff 100644
--- a/README.md
+++ b/README.md
@@ -27,8 +27,8 @@ JRE/JDK 8u60 or higher.
 * [X] XCI (+HFS0)
 * [X] TIK
 * [X] XML 
-
-* [ ] LogPrinter to singleton implementation
+* [X] NRO
+* [ ] LogPrinter to singleton implementation.
 * [ ] NPDM support
 * [ ] CNMT support
 * [ ] NSO support
diff --git a/src/main/java/konogonka/RainbowHexDump.java b/src/main/java/konogonka/RainbowHexDump.java
index 9a29400..f53a6f7 100644
--- a/src/main/java/konogonka/RainbowHexDump.java
+++ b/src/main/java/konogonka/RainbowHexDump.java
@@ -29,4 +29,8 @@ public class RainbowHexDump {
         System.out.println();
         System.out.print(new String(byteArray, StandardCharsets.UTF_8)+"\n");
     }
+
+    public static void octDumpInt(int value){
+        System.out.println(String.format("%32s", Integer.toBinaryString( value )).replace(' ', '0')+" | "+value);
+    }
 }
diff --git a/src/main/java/konogonka/Tools/NPDM/ACID/KernelAccessControlProvider.java b/src/main/java/konogonka/Tools/NPDM/ACID/KernelAccessControlProvider.java
index d916315..add60ab 100644
--- a/src/main/java/konogonka/Tools/NPDM/ACID/KernelAccessControlProvider.java
+++ b/src/main/java/konogonka/Tools/NPDM/ACID/KernelAccessControlProvider.java
@@ -1,10 +1,90 @@
 package konogonka.Tools.NPDM.ACID;
 
+import konogonka.LoperConverter;
 import konogonka.RainbowHexDump;
 
+/*
+NOTE:
+KAC is set of 4-byes blocks
+Consider them as uInt32 (Read as Little endian)
+Look on the tail of each block (low bits). If tail is equals to mask like 0111111 then such block is related to one of the possible sections (KernelFlags etc.)
+If it's related to the one of the blocks, then we could pick useful data from this block.
+Example:
+36 BYES on this section, then 9 blocks with len = 4-bytes each available
+1 00-01-02-03
+2 04-05-06-07
+3 08-09-10-11
+4 12-13-14-15
+5 16-17-18-19
+6 20-21-22-23
+7 24-25-26-27
+8 28-29-30-31
+9 32-33-34-35
+
+Possible patterns are:
+Octal                            | Decimal
+00000000000000000000000000000111 | 7 <- KernelFlags
+00000000000000000000000000001111 | 15 <- SyscallMask
+00000000000000000000000000111111 | 63 <- MapIoOrNormalRange
+00000000000000000000000001111111 | 127 <- MapNormalPage (RW)
+00000000000000000000011111111111 | 2047 <- InterruptPair
+00000000000000000001111111111111 | 8191 <- ApplicationType
+00000000000000000011111111111111 | 16383 <- KernelReleaseVersion
+00000000000000000111111111111111 | 32767 <- HandleTableSize
+00000000000000001111111111111111 | 65535 <- DebugFlags
+Other masks could be implemented by N in future (?).
+
+TIP: Generate
+int j = 0xFFFFFFFF;
+for (byte i = 0; i < 16; i++){
+    j = (j << 1);
+    RainbowHexDump.octDumpInt(~j);
+}
+ */
+
 public class KernelAccessControlProvider {
 
-    KernelAccessControlProvider(byte[] bytes){
+    KernelAccessControlProvider(byte[] bytes) throws Exception{
+        if (bytes.length < 4)
+            throw new Exception("ACID-> KernelAccessControlProvider: too small size of the Kernel Access Control");
+        final int pattrnKernFlags = 7;
+        final int pattrnSyscallMsk = 15;
+        final int pattrnMapIoNormalRange = 63;
+        final int pattrnRw = 127;
+        final int pattrnInterrPair = 2047;
+        final int pattrnAppType = 8191;
+        final int pattrnKernRelVer = 16383;
+        final int pattrnHandlTblSize = 32767;
+        final int pattrnDbgFlags = 65535;
+
         RainbowHexDump.hexDumpUTF8(bytes);
+        for (int o = 0; o < bytes.length; o += 4) {
+            RainbowHexDump.octDumpInt(LoperConverter.getLEint(bytes, o));
+        }
+        System.out.println();
+
+        RainbowHexDump.octDumpInt(pattrnKernFlags);
+        RainbowHexDump.octDumpInt(pattrnSyscallMsk);
+        RainbowHexDump.octDumpInt(pattrnMapIoNormalRange);
+        RainbowHexDump.octDumpInt(pattrnRw);
+        RainbowHexDump.octDumpInt(pattrnInterrPair);
+        RainbowHexDump.octDumpInt(pattrnAppType);
+        RainbowHexDump.octDumpInt(pattrnKernRelVer);
+        RainbowHexDump.octDumpInt(pattrnHandlTblSize);
+        RainbowHexDump.octDumpInt(pattrnDbgFlags);
+
+
+        int KernelFlagsHiCpuId; // 7 31-24
+        int KernelFlagsLoCpuId; // 7 23-16
+        int KernelFlagsHiThreadPrio; // 5 15-10
+        int KernelFlagsLoThreadPrio; // 5 9-4
+        int SyscallMask;
+        int MapIoOrNormalRange;
+        int MapNormalPage_RW;
+        int InterruptPair;
+        int ApplicationType;
+        int KernelReleaseVersion;
+        int HandleTableSize ;
+        int DebugFlags;
     }
 }