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* [PATCH V3] BaseTools: add ASSERT checker for array buffer value assignment.
@ 2018-09-25  6:01 Zhaozh1x
  2018-10-15  7:19 ` Gao, Liming
  0 siblings, 1 reply; 2+ messages in thread
From: Zhaozh1x @ 2018-09-25  6:01 UTC (permalink / raw)
  To: edk2-devel; +Cc: Zhaozh1x, Liming Gao, Yonghong Zhu, Bob Feng

V3:
Update the error message for array checker.
V2:
1. Add comments for each ASSERT.
2. ASSERT need to skip the case of array size of array as zero. For
example, TestArray[] in struct in header file.
V1:
For structure PCD,
1. use compiler time assert to check the array index, report error
if array index exceeds the array number.
2. use compiler time assert to check the array size, report error
if the user declared size in header file is smaller than the user
defined in DEC/DSC file.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: ZhiqiangX Zhao <zhiqiangx.zhao@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Bob Feng <bob.c.feng@intel.com>
---
 BaseTools/Source/C/Common/PcdValueCommon.h        | 7 +++++++
 BaseTools/Source/Python/Workspace/DscBuildData.py | 8 ++++++++
 2 files changed, 15 insertions(+)

diff --git a/BaseTools/Source/C/Common/PcdValueCommon.h b/BaseTools/Source/C/Common/PcdValueCommon.h
index 3922428ded..255afdfcc3 100644
--- a/BaseTools/Source/C/Common/PcdValueCommon.h
+++ b/BaseTools/Source/C/Common/PcdValueCommon.h
@@ -22,6 +22,13 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #define __ARRAY_ELEMENT_SIZE(TYPE, Field) (sizeof((TYPE *)0)->Field[0])
 #define __OFFSET_OF(TYPE, Field) ((UINT32) &(((TYPE *)0)->Field))
 #define __FLEXIBLE_SIZE(Size, TYPE, Field, MaxIndex)   if (__FIELD_SIZE(TYPE, Field) == 0) Size = MAX((__OFFSET_OF(TYPE, Field) + __ARRAY_ELEMENT_SIZE(TYPE, Field) * (MaxIndex)), Size)
+#define __ARRAY_SIZE(Array) (sizeof(Array)/sizeof(Array[0]))
+
+#if defined(_MSC_EXTENSIONS)
+#define __STATIC_ASSERT static_assert
+#else
+#define __STATIC_ASSERT _Static_assert
+#endif
 
 VOID
 PcdEntryPoint (
diff --git a/BaseTools/Source/Python/Workspace/DscBuildData.py b/BaseTools/Source/Python/Workspace/DscBuildData.py
index ac0f0bee47..224c8eda62 100644
--- a/BaseTools/Source/Python/Workspace/DscBuildData.py
+++ b/BaseTools/Source/Python/Workspace/DscBuildData.py
@@ -1826,8 +1826,12 @@ class DscBuildData(PlatformBuildClassObject):
                     #
                     CApp = CApp + '  FieldSize = __FIELD_SIZE(%s, %s);\n' % (Pcd.DatumType, FieldName)
                     CApp = CApp + '  Value     = %s; // From %s Line %d Value %s\n' % (DscBuildData.IntToCString(Value, ValueSize), FieldList[FieldName][1], FieldList[FieldName][2], FieldList[FieldName][0])
+                    CApp = CApp + '  __STATIC_ASSERT((__FIELD_SIZE(%s, %s) >= %d) || (__FIELD_SIZE(%s, %s) == 0), "Input buffer exceeds the buffer array"); // From %s Line %d Value %s\n' % (Pcd.DatumType, FieldName, ValueSize, Pcd.DatumType, FieldName, FieldList[FieldName][1], FieldList[FieldName][2], FieldList[FieldName][0])
                     CApp = CApp + '  memcpy (&Pcd->%s, Value, (FieldSize > 0 && FieldSize < %d) ? FieldSize : %d);\n' % (FieldName, ValueSize, ValueSize)
                 else:
+                    if '[' in FieldName and ']' in FieldName:
+                        Index = int(FieldName.split('[')[1].split(']')[0])
+                        CApp = CApp + '  __STATIC_ASSERT((%d < __ARRAY_SIZE(Pcd->%s)) || (__ARRAY_SIZE(Pcd->%s) == 0), "array index exceeds the array number"); // From %s Line %d Index of %s\n' % (Index, FieldName.split('[')[0], FieldName.split('[')[0], FieldList[FieldName][1], FieldList[FieldName][2], FieldName)
                     if ValueSize > 4:
                         CApp = CApp + '  Pcd->%s = %dULL; // From %s Line %d Value %s\n' % (FieldName, Value, FieldList[FieldName][1], FieldList[FieldName][2], FieldList[FieldName][0])
                     else:
@@ -1905,8 +1909,12 @@ class DscBuildData(PlatformBuildClassObject):
                     #
                         CApp = CApp + '  FieldSize = __FIELD_SIZE(%s, %s);\n' % (Pcd.DatumType, FieldName)
                         CApp = CApp + '  Value     = %s; // From %s Line %d Value %s\n' % (DscBuildData.IntToCString(Value, ValueSize), FieldList[FieldName][1], FieldList[FieldName][2], FieldList[FieldName][0])
+                        CApp = CApp + '  __STATIC_ASSERT((__FIELD_SIZE(%s, %s) >= %d) || (__FIELD_SIZE(%s, %s) == 0), "Input buffer exceeds the buffer array"); // From %s Line %d Value %s\n' % (Pcd.DatumType, FieldName, ValueSize, Pcd.DatumType, FieldName, FieldList[FieldName][1], FieldList[FieldName][2], FieldList[FieldName][0])
                         CApp = CApp + '  memcpy (&Pcd->%s, Value, (FieldSize > 0 && FieldSize < %d) ? FieldSize : %d);\n' % (FieldName, ValueSize, ValueSize)
                     else:
+                        if '[' in FieldName and ']' in FieldName:
+                            Index = int(FieldName.split('[')[1].split(']')[0])
+                            CApp = CApp + '  __STATIC_ASSERT((%d < __ARRAY_SIZE(Pcd->%s)) || (__ARRAY_SIZE(Pcd->%s) == 0), "array index exceeds the array number"); // From %s Line %d Index of %s\n' % (Index, FieldName.split('[')[0], FieldName.split('[')[0], FieldList[FieldName][1], FieldList[FieldName][2], FieldName)
                         if ValueSize > 4:
                             CApp = CApp + '  Pcd->%s = %dULL; // From %s Line %d Value %s\n' % (FieldName, Value, FieldList[FieldName][1], FieldList[FieldName][2], FieldList[FieldName][0])
                         else:
-- 
2.14.1.windows.1



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2018-09-25  6:01 [PATCH V3] BaseTools: add ASSERT checker for array buffer value assignment Zhaozh1x
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