From 31c69b6ca1b91e7fd9fd8e14082fd2584c5f538c Mon Sep 17 00:00:00 2001
From: Toni Uhlig <matzeton@googlemail.com>
Date: Sun, 24 May 2020 16:48:22 +0200
Subject: first public release
Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
---
source/file.c | 116 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 116 insertions(+)
create mode 100644 source/file.c
(limited to 'source/file.c')
diff --git a/source/file.c b/source/file.c
new file mode 100644
index 0000000..046bcdd
--- /dev/null
+++ b/source/file.c
@@ -0,0 +1,116 @@
+#include "compat.h"
+#include "crypt_strings.h"
+#include "log.h"
+#include "file.h"
+
+
+BOOL bOpenFile(const char* filepath, int oflags, HANDLE* hPtr)
+{
+ HANDLE file = _CreateFile(filepath, GENERIC_READ | ((oflags & OF_WRITEACCESS) ? GENERIC_WRITE : 0),
+ 0, NULL, ((oflags & OF_CREATENEW) ? CREATE_ALWAYS : OPEN_EXISTING), FILE_ATTRIBUTE_NORMAL, NULL);
+ if (file == INVALID_HANDLE_VALUE)
+ return FALSE;
+ *hPtr = file;
+ return TRUE;
+}
+
+BOOL bHandleToBuf(HANDLE hFile, BYTE** bufPtr, SIZE_T* szFilePtr, SIZE_T* szReadPtr)
+{
+ if ( (*szFilePtr = _GetFileSize(hFile, NULL)) <= 0 ) return FALSE;
+ if ( (*bufPtr = calloc(*szFilePtr, sizeof(BYTE))) == NULL ) return FALSE;
+ return _ReadFile(hFile, *bufPtr, *szFilePtr, szReadPtr, NULL);
+}
+
+BOOL bFileToBuf(HANDLE hFile, BYTE** bufPtr, SIZE_T* szBufPtr)
+{
+ BOOL ret = FALSE;
+
+ *bufPtr = NULL;
+ *szBufPtr = 0;
+
+ if (_SetFilePointer(hFile, 0, NULL, FILE_BEGIN) == INVALID_SET_FILE_POINTER) {
+ LOG_MARKER
+ return ret;
+ }
+ if (hFile)
+ {
+ BYTE *buf;
+ DWORD szFile;
+ DWORD szRead;
+ if (bHandleToBuf(hFile, &buf, &szFile, &szRead))
+ {
+ if (szFile == szRead)
+ {
+ *bufPtr = buf;
+ *szBufPtr = szFile;
+ ret = TRUE;
+ }
+ else if (buf != NULL)
+ {
+ LOG_MARKER
+ free(buf);
+ }
+ }
+ else
+ {
+ LOG_MARKER
+ }
+ }
+ else
+ {
+ LOG_MARKER
+ }
+ return ret;
+}
+
+BOOL bFileNameToBuf(const char* szFullPath, BYTE** pBuf, SIZE_T* pBufSiz)
+{
+ HANDLE hFile = NULL;
+ if (!bOpenFile(szFullPath, 0, &hFile) || hFile == INVALID_HANDLE_VALUE)
+ return FALSE;
+ BOOL ret = bFileToBuf(hFile, pBuf, pBufSiz);
+ _CloseHandle(hFile);
+ return ret;
+}
+
+inline SIZE_T nBufToFile(HANDLE hFile, const BYTE* buf, SIZE_T szBuf)
+{
+ SIZE_T szWritten = 0;
+
+ if (hFile)
+ {
+ if (_SetFilePointer(hFile, 0, NULL, FILE_BEGIN) == INVALID_SET_FILE_POINTER) {
+ LOG_MARKER
+ return 0;
+ }
+ if (!_WriteFile(hFile, buf, szBuf, &szWritten, NULL))
+ {
+ szWritten = 0;
+ }
+ }
+ return szWritten;
+}
+
+BOOL bBufToFileName(const char* szFullPath, int oflags, BYTE* buf, SIZE_T bufSiz)
+{
+ HANDLE hFile = NULL;
+ if (!bOpenFile(szFullPath, oflags, &hFile) || hFile == INVALID_HANDLE_VALUE)
+ return FALSE;
+ BOOL ret = nBufToFile(hFile, buf, bufSiz) == bufSiz;
+ _CloseHandle(hFile);
+ return ret;
+}
+
+BOOL isFileInDir(LPSTR szDirName, LPSTR szFileName)
+{
+ char* fullPath = COMPAT(calloc)(MAX_PATH+1, sizeof(char));
+ DBUF(DIRFILE_FMT_ENUM, __fmt);
+
+ if (COMPAT(snprintf)(fullPath, MAX_PATH+1, __fmt, szDirName, szFileName) <= 0)
+ return FALSE;
+
+ DWORD dwAttrib = _GetFileAttributes(fullPath);
+ COMPAT(free)(fullPath);
+ return (dwAttrib != INVALID_FILE_ATTRIBUTES &&
+ !(dwAttrib & FILE_ATTRIBUTE_DIRECTORY));
+}
--
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