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simplify and reduce logic

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This commit is contained in:
Brent Cook 2017-07-22 05:59:14 -07:00
parent 770d0f65f4
commit 9118645a6e
1 changed files with 25 additions and 36 deletions
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61
c/meterpreter/source/extensions/stdapi/server/fs/fs_win.c
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@ -287,33 +287,32 @@ out:
return rc;
}
#define Py_SAFE_DOWNCASTM(VALUE, WIDE, NARROW) (NARROW)(VALUE)
static int
attributes_to_mode(DWORD attr)
{
int m = 0;
if (attr & FILE_ATTRIBUTE_DIRECTORY)
if (attr & FILE_ATTRIBUTE_DIRECTORY) {
m |= _S_IFDIR | 0111; /* IFEXEC for user,group,other */
else
} else {
m |= _S_IFREG;
if (attr & FILE_ATTRIBUTE_READONLY)
}
if (attr & FILE_ATTRIBUTE_READONLY) {
m |= 0444;
else
} else {
m |= 0666;
}
return m;
}
static __int64 secs_between_epochs = 11644473600;
static BOOL
static int
attributes_from_dir_w(LPCWSTR pszFile, LPWIN32_FILE_ATTRIBUTE_DATA pfad)
{
HANDLE hFindFile;
WIN32_FIND_DATAW FileData;
hFindFile = FindFirstFileW(pszFile, &FileData);
if (hFindFile == INVALID_HANDLE_VALUE)
return FALSE;
if (hFindFile == INVALID_HANDLE_VALUE) {
return -1;
}
FindClose(hFindFile);
pfad->dwFileAttributes = FileData.dwFileAttributes;
pfad->ftCreationTime = FileData.ftCreationTime;
@ -321,30 +320,33 @@ attributes_from_dir_w(LPCWSTR pszFile, LPWIN32_FILE_ATTRIBUTE_DATA pfad)
pfad->ftLastWriteTime = FileData.ftLastWriteTime;
pfad->nFileSizeHigh = FileData.nFileSizeHigh;
pfad->nFileSizeLow = FileData.nFileSizeLow;
return TRUE;
return 0;
}
static void
FILE_TIME_to_time_t_nsec(FILETIME *in_ptr, time_t *time_out)
FILE_TIME_to_nsec(FILETIME *in_ptr, uint64_t *time_out)
{
__int64 in;
int64_t in;
const int64_t secs_between_epochs = 11644473600;
memcpy(&in, in_ptr, sizeof(in));
*time_out = Py_SAFE_DOWNCASTM((in / 10000000) - secs_between_epochs, __int64, time_t);
*time_out = (in / 10000000) - secs_between_epochs;
}
static int attribute_data_to_stat(WIN32_FILE_ATTRIBUTE_DATA *info, struct meterp_stat *result)
static int
attribute_data_to_stat(WIN32_FILE_ATTRIBUTE_DATA *info, struct meterp_stat *result)
{
memset(result, 0, sizeof(*result));
result->st_mode = attributes_to_mode(info->dwFileAttributes);
result->st_size = (((__int64)info->nFileSizeHigh) << 32) + info->nFileSizeLow;
FILE_TIME_to_time_t_nsec(&info->ftCreationTime, &result->st_ctime);
FILE_TIME_to_time_t_nsec(&info->ftLastWriteTime, &result->st_mtime);
FILE_TIME_to_time_t_nsec(&info->ftLastAccessTime, &result->st_atime);
FILE_TIME_to_nsec(&info->ftCreationTime, &result->st_ctime);
FILE_TIME_to_nsec(&info->ftLastWriteTime, &result->st_mtime);
FILE_TIME_to_nsec(&info->ftLastAccessTime, &result->st_atime);
return 0;
}
static int win32_wstatM(const wchar_t* path, struct meterp_stat *result)
static int
win32_wstat(const wchar_t* path, struct meterp_stat *result)
{
int code;
const wchar_t *dot;
@ -360,8 +362,9 @@ static int win32_wstatM(const wchar_t* path, struct meterp_stat *result)
}
}
code = attribute_data_to_stat(&info, result);
if (code < 0)
if (code < 0) {
return code;
}
/* Set IFEXEC if it is an .exe, .bat, ... */
dot = wcsrchr(path, '.');
if (dot) {
@ -376,30 +379,16 @@ static int win32_wstatM(const wchar_t* path, struct meterp_stat *result)
int fs_stat(char *filename, struct meterp_stat *buf)
{
struct meterp_stat sbuf;
wchar_t *filename_w = utf8_to_wchar(filename);
if (filename_w == NULL) {
return -1;
}
if (win32_wstatM(filename_w, &sbuf) == -1) {
if (win32_wstat(filename_w, buf) == -1) {
return GetLastError();
}
free(filename_w);
buf->st_dev = sbuf.st_dev;
buf->st_ino = sbuf.st_ino;
buf->st_mode = sbuf.st_mode;
buf->st_nlink = sbuf.st_nlink;
buf->st_uid = sbuf.st_uid;
buf->st_gid = sbuf.st_gid;
buf->st_rdev = sbuf.st_rdev;
buf->st_size = sbuf.st_size;
buf->st_atime = sbuf.st_atime;
buf->st_mtime = sbuf.st_mtime;
buf->st_ctime = sbuf.st_ctime;
return ERROR_SUCCESS;
}