Git conversion: Make reactos the root directory, move rosapps, rostests, wallpapers into modules, and delete rossubsys.

base/applications/rapps/integrity.cpp

@@ -0,0 +1,65 @@
+/*
+ * PROJECT:     ReactOS Applications Manager
+ * LICENSE:     GPL-2.0+ (https://spdx.org/licenses/GPL-2.0+)
+ * FILE:        base/applications/rapps/integrity.cpp
+ * PURPOSE:     Various integrity check mechanisms
+ * COPYRIGHT:   Copyright Ismael Ferreras Morezuelas (swyterzone+ros@gmail.com)
+ *              Copyright Mark Jansen
+ */
+#include "rapps.h"
+
+#include <sha1.h>
+
+BOOL VerifyInteg(const ATL::CStringW &SHA1Hash, const ATL::CStringW &FileName)
+{
+    return VerifyInteg(SHA1Hash.GetString(), FileName.GetString());
+}
+
+BOOL VerifyInteg(LPCWSTR lpSHA1Hash, LPCWSTR lpFileName)
+{
+    BOOL ret = FALSE;
+
+    /* first off, does it exist at all? */
+    HANDLE file = CreateFileW(lpFileName, GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_READONLY, NULL);
+
+    if (file == INVALID_HANDLE_VALUE)
+        return FALSE;
+
+    /* let's grab the actual file size to organize the mmap'ing rounds */
+    LARGE_INTEGER size;
+    GetFileSizeEx(file, &size);
+
+    /* retrieve a handle to map the file contents to memory */
+    HANDLE map = CreateFileMappingW(file, NULL, PAGE_READONLY, 0, 0, NULL);
+    if (map)
+    {
+        /* map that thing in address space */
+        const unsigned char *file_map = static_cast<const unsigned char *>(MapViewOfFile(map, FILE_MAP_READ, 0, 0, 0));
+        if (file_map)
+        {
+            SHA_CTX ctx;
+            /* initialize the SHA-1 context */
+            A_SHAInit(&ctx);
+
+            /* feed the data to the cookie monster */
+            A_SHAUpdate(&ctx, file_map, size.LowPart);
+
+            /* cool, we don't need this anymore */
+            UnmapViewOfFile(file_map);
+
+            /* we're done, compute the final hash */
+            ULONG sha[5];
+            A_SHAFinal(&ctx, sha);
+
+            WCHAR buf[(sizeof(sha) * 2) + 1];
+            for (UINT i = 0; i < sizeof(sha); i++)
+                swprintf(buf + 2 * i, L"%02x", ((unsigned char *) sha)[i]);
+            /* does the resulting SHA1 match with the provided one? */
+            if (!_wcsicmp(buf, lpSHA1Hash))
+                ret = TRUE;
+        }
+        CloseHandle(map);
+    }
+    CloseHandle(file);
+    return ret;
+}