3 files changed, 164 insertions, 0 deletions
diff --git a/src/lib/entropy/win32_stats/es_win32.cpp b/src/lib/entropy/win32_stats/es_win32.cpp
new file mode 100644
index 000000000..fff11592d
--- /dev/null
+++ b/src/lib/entropy/win32_stats/es_win32.cpp
@@ -0,0 +1,118 @@
+/*
+* Win32 EntropySource
+* (C) 1999-2009 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include <botan/internal/es_win32.h>
+#include <windows.h>
+#include <tlhelp32.h>
+
+namespace Botan {
+
+/**
+* Win32 poll using stats functions including Tooltip32
+*/
+void Win32_EntropySource::poll(Entropy_Accumulator& accum)
+   {
+   /*
+   First query a bunch of basic statistical stuff, though
+   don't count it for much in terms of contributed entropy.
+   */
+   accum.add(GetTickCount(), 0);
+   accum.add(GetMessagePos(), 0);
+   accum.add(GetMessageTime(), 0);
+   accum.add(GetInputState(), 0);
+   accum.add(GetCurrentProcessId(), 0);
+   accum.add(GetCurrentThreadId(), 0);
+
+   SYSTEM_INFO sys_info;
+   GetSystemInfo(&sys_info);
+   accum.add(sys_info, 1);
+
+   MEMORYSTATUS mem_info;
+   GlobalMemoryStatus(&mem_info);
+   accum.add(mem_info, 1);
+
+   POINT point;
+   GetCursorPos(&point);
+   accum.add(point, 1);
+
+   GetCaretPos(&point);
+   accum.add(point, 1);
+
+   LARGE_INTEGER perf_counter;
+   QueryPerformanceCounter(&perf_counter);
+   accum.add(perf_counter, 0);
+
+   /*
+   Now use the Tooltip library to iterate throug various objects on
+   the system, including processes, threads, and heap objects.
+   */
+
+   HANDLE snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPALL, 0);
+
+#define TOOLHELP32_ITER(DATA_TYPE, FUNC_FIRST, FUNC_NEXT) \
+   if(!accum.polling_goal_achieved())                     \
+      {                                                   \
+      DATA_TYPE info;                                     \
+      info.dwSize = sizeof(DATA_TYPE);                    \
+      if(FUNC_FIRST(snapshot, &info))                     \
+         {                                                \
+         do                                               \
+            {                                             \
+            accum.add(info, 1);                           \
+            } while(FUNC_NEXT(snapshot, &info));          \
+         }                                                \
+      }
+
+   TOOLHELP32_ITER(MODULEENTRY32, Module32First, Module32Next);
+   TOOLHELP32_ITER(PROCESSENTRY32, Process32First, Process32Next);
+   TOOLHELP32_ITER(THREADENTRY32, Thread32First, Thread32Next);
+
+#undef TOOLHELP32_ITER
+
+   if(!accum.polling_goal_achieved())
+      {
+      size_t heap_lists_found = 0;
+      HEAPLIST32 heap_list;
+      heap_list.dwSize = sizeof(HEAPLIST32);
+
+      const size_t HEAP_LISTS_MAX = 32;
+      const size_t HEAP_OBJS_PER_LIST = 128;
+
+      if(Heap32ListFirst(snapshot, &heap_list))
+         {
+         do
+            {
+            accum.add(heap_list, 1);
+
+            if(++heap_lists_found > HEAP_LISTS_MAX)
+               break;
+
+            size_t heap_objs_found = 0;
+            HEAPENTRY32 heap_entry;
+            heap_entry.dwSize = sizeof(HEAPENTRY32);
+            if(Heap32First(&heap_entry, heap_list.th32ProcessID,
+                           heap_list.th32HeapID))
+               {
+               do
+                  {
+                  if(heap_objs_found++ > HEAP_OBJS_PER_LIST)
+                     break;
+                  accum.add(heap_entry, 1);
+                  } while(Heap32Next(&heap_entry));
+               }
+
+            if(accum.polling_goal_achieved())
+               break;
+
+            } while(Heap32ListNext(snapshot, &heap_list));
+         }
+      }
+
+   CloseHandle(snapshot);
+   }
+
+}
diff --git a/src/lib/entropy/win32_stats/es_win32.h b/src/lib/entropy/win32_stats/es_win32.h
new file mode 100644
index 000000000..6c7c9ee09
--- /dev/null
+++ b/src/lib/entropy/win32_stats/es_win32.h
@@ -0,0 +1,27 @@
+/*
+* Win32 EntropySource
+* (C) 1999-2009 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_ENTROPY_SRC_WIN32_H__
+#define BOTAN_ENTROPY_SRC_WIN32_H__
+
+#include <botan/entropy_src.h>
+
+namespace Botan {
+
+/**
+* Win32 Entropy Source
+*/
+class Win32_EntropySource : public EntropySource
+   {
+   public:
+      std::string name() const { return "Win32 Statistics"; }
+      void poll(Entropy_Accumulator& accum);
+   };
+
+}
+
+#endif
diff --git a/src/lib/entropy/win32_stats/info.txt b/src/lib/entropy/win32_stats/info.txt
new file mode 100644
index 000000000..48eb91faa
--- /dev/null
+++ b/src/lib/entropy/win32_stats/info.txt
@@ -0,0 +1,19 @@
+define ENTROPY_SRC_WIN32 20131128
+
+<source>
+es_win32.cpp
+</source>
+
+<header:internal>
+es_win32.h
+</header:internal>
+
+<os>
+windows
+cygwin
+mingw
+</os>
+
+<libs>
+windows -> user32.lib
+</libs>