Issue #29319: Prevent RunMainFromImporter overwriting sys.path[0].

1 files changed, 134 insertions, 0 deletions

diff --git a/Modules/_sha3/kcp/SnP-Relaned.h b/Modules/_sha3/kcp/SnP-Relaned.h
new file mode 100644
index 0000000000..086e635ff8
--- /dev/null
+++ b/Modules/_sha3/kcp/SnP-Relaned.h
@@ -0,0 +1,134 @@
+/*
+Implementation by the Keccak, Keyak and Ketje Teams, namely, Guido Bertoni,
+Joan Daemen, Michaël Peeters, Gilles Van Assche and Ronny Van Keer, hereby
+denoted as "the implementer".
+
+For more information, feedback or questions, please refer to our websites:
+http://keccak.noekeon.org/
+http://keyak.noekeon.org/
+http://ketje.noekeon.org/
+
+To the extent possible under law, the implementer has waived all copyright
+and related or neighboring rights to the source code in this file.
+http://creativecommons.org/publicdomain/zero/1.0/
+*/
+
+#ifndef _SnP_Relaned_h_
+#define _SnP_Relaned_h_
+
+#define SnP_AddBytes(state, data, offset, length, SnP_AddLanes, SnP_AddBytesInLane, SnP_laneLengthInBytes) \
+    { \
+        if ((offset) == 0) { \
+            SnP_AddLanes(state, data, (length)/SnP_laneLengthInBytes); \
+            SnP_AddBytesInLane(state, \
+                (length)/SnP_laneLengthInBytes, \
+                (data)+((length)/SnP_laneLengthInBytes)*SnP_laneLengthInBytes, \
+                0, \
+                (length)%SnP_laneLengthInBytes); \
+        } \
+        else { \
+            unsigned int _sizeLeft = (length); \
+            unsigned int _lanePosition = (offset)/SnP_laneLengthInBytes; \
+            unsigned int _offsetInLane = (offset)%SnP_laneLengthInBytes; \
+            const unsigned char *_curData = (data); \
+            while(_sizeLeft > 0) { \
+                unsigned int _bytesInLane = SnP_laneLengthInBytes - _offsetInLane; \
+                if (_bytesInLane > _sizeLeft) \
+                    _bytesInLane = _sizeLeft; \
+                SnP_AddBytesInLane(state, _lanePosition, _curData, _offsetInLane, _bytesInLane); \
+                _sizeLeft -= _bytesInLane; \
+                _lanePosition++; \
+                _offsetInLane = 0; \
+                _curData += _bytesInLane; \
+            } \
+        } \
+    }
+
+#define SnP_OverwriteBytes(state, data, offset, length, SnP_OverwriteLanes, SnP_OverwriteBytesInLane, SnP_laneLengthInBytes) \
+    { \
+        if ((offset) == 0) { \
+            SnP_OverwriteLanes(state, data, (length)/SnP_laneLengthInBytes); \
+            SnP_OverwriteBytesInLane(state, \
+                (length)/SnP_laneLengthInBytes, \
+                (data)+((length)/SnP_laneLengthInBytes)*SnP_laneLengthInBytes, \
+                0, \
+                (length)%SnP_laneLengthInBytes); \
+        } \
+        else { \
+            unsigned int _sizeLeft = (length); \
+            unsigned int _lanePosition = (offset)/SnP_laneLengthInBytes; \
+            unsigned int _offsetInLane = (offset)%SnP_laneLengthInBytes; \
+            const unsigned char *_curData = (data); \
+            while(_sizeLeft > 0) { \
+                unsigned int _bytesInLane = SnP_laneLengthInBytes - _offsetInLane; \
+                if (_bytesInLane > _sizeLeft) \
+                    _bytesInLane = _sizeLeft; \
+                SnP_OverwriteBytesInLane(state, _lanePosition, _curData, _offsetInLane, _bytesInLane); \
+                _sizeLeft -= _bytesInLane; \
+                _lanePosition++; \
+                _offsetInLane = 0; \
+                _curData += _bytesInLane; \
+            } \
+        } \
+    }
+
+#define SnP_ExtractBytes(state, data, offset, length, SnP_ExtractLanes, SnP_ExtractBytesInLane, SnP_laneLengthInBytes) \
+    { \
+        if ((offset) == 0) { \
+            SnP_ExtractLanes(state, data, (length)/SnP_laneLengthInBytes); \
+            SnP_ExtractBytesInLane(state, \
+                (length)/SnP_laneLengthInBytes, \
+                (data)+((length)/SnP_laneLengthInBytes)*SnP_laneLengthInBytes, \
+                0, \
+                (length)%SnP_laneLengthInBytes); \
+        } \
+        else { \
+            unsigned int _sizeLeft = (length); \
+            unsigned int _lanePosition = (offset)/SnP_laneLengthInBytes; \
+            unsigned int _offsetInLane = (offset)%SnP_laneLengthInBytes; \
+            unsigned char *_curData = (data); \
+            while(_sizeLeft > 0) { \
+                unsigned int _bytesInLane = SnP_laneLengthInBytes - _offsetInLane; \
+                if (_bytesInLane > _sizeLeft) \
+                    _bytesInLane = _sizeLeft; \
+                SnP_ExtractBytesInLane(state, _lanePosition, _curData, _offsetInLane, _bytesInLane); \
+                _sizeLeft -= _bytesInLane; \
+                _lanePosition++; \
+                _offsetInLane = 0; \
+                _curData += _bytesInLane; \
+            } \
+        } \
+    }
+
+#define SnP_ExtractAndAddBytes(state, input, output, offset, length, SnP_ExtractAndAddLanes, SnP_ExtractAndAddBytesInLane, SnP_laneLengthInBytes) \
+    { \
+        if ((offset) == 0) { \
+            SnP_ExtractAndAddLanes(state, input, output, (length)/SnP_laneLengthInBytes); \
+            SnP_ExtractAndAddBytesInLane(state, \
+                (length)/SnP_laneLengthInBytes, \
+                (input)+((length)/SnP_laneLengthInBytes)*SnP_laneLengthInBytes, \
+                (output)+((length)/SnP_laneLengthInBytes)*SnP_laneLengthInBytes, \
+                0, \
+                (length)%SnP_laneLengthInBytes); \
+        } \
+        else { \
+            unsigned int _sizeLeft = (length); \
+            unsigned int _lanePosition = (offset)/SnP_laneLengthInBytes; \
+            unsigned int _offsetInLane = (offset)%SnP_laneLengthInBytes; \
+            const unsigned char *_curInput = (input); \
+            unsigned char *_curOutput = (output); \
+            while(_sizeLeft > 0) { \
+                unsigned int _bytesInLane = SnP_laneLengthInBytes - _offsetInLane; \
+                if (_bytesInLane > _sizeLeft) \
+                    _bytesInLane = _sizeLeft; \
+                SnP_ExtractAndAddBytesInLane(state, _lanePosition, _curInput, _curOutput, _offsetInLane, _bytesInLane); \
+                _sizeLeft -= _bytesInLane; \
+                _lanePosition++; \
+                _offsetInLane = 0; \
+                _curInput += _bytesInLane; \
+                _curOutput += _bytesInLane; \
+            } \
+        } \
+    }
+
+#endif