/*
   BAREOS® - Backup Archiving REcovery Open Sourced

   Copyright (C) 2004-2011 Free Software Foundation Europe e.V.
   Copyright (C) 2019-2024 Bareos GmbH & Co. KG

   This program is Free Software; you can redistribute it and/or
   modify it under the terms of version three of the GNU Affero General Public
   License as published by the Free Software Foundation and included
   in the file LICENSE.

   This program is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   Affero General Public License for more details.

   You should have received a copy of the GNU Affero General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
   02110-1301, USA.
*/
/*                               -*- Mode: C -*-
 * compat.h --
 */
#ifndef BAREOS_WIN32_COMPAT_INCLUDE_COMPAT_H_
#define BAREOS_WIN32_COMPAT_INCLUDE_COMPAT_H_


#ifdef HAVE_MSVC
#  define NOMINMAX
// not #if defined(_WIN32) || defined(_WIN64) because we have strncasecmp in
// mingw
#  define strncasecmp _strnicmp
#  define strcasecmp _stricmp
#endif

#include <winsock2.h>
#include <windows.h>
#include <ws2tcpip.h>
#include <stdint.h>
#include <stdio.h>
#include <sys/types.h>
#include <time.h>
#include <syslog.h>
#include "include/fcntl_def.h"
#include "include/bc_types.h"

// Copyright transferred from Raider Solutions, Inc to
//   Kern Sibbald and John Walker by express permission.
//
/*
 * Author          : Christopher S. Hull
 * Created On      : Fri Jan 30 13:00:51 2004
 */

#if !defined(_STAT_H)
#  define _STAT_H /* don't pull in MinGW stat.h */
#endif

#ifndef _STAT_DEFINED
#  define _STAT_DEFINED 1 /* don't pull in MinGW struct stat from wchar.h */
#endif

#if defined(_MSC_VER) && (_MSC_VER >= 1400)  // VC8+
#  pragma warning(disable : 4996)  // Either disable all deprecation warnings,
// #define _CRT_SECURE_NO_DEPRECATE // Or just turn off warnings about the newly
// deprecated CRT functions.
#elif !defined(HAVE_MINGW) && !defined(HAVE_WXCONSOLE)
#  define __STDC__ 1
#endif

#include <malloc.h>
#include <direct.h>

#if defined(HAVE_MINGW)
/*
 * MINGW uses __declspec while Microsoft Visual C uses _declspec so map all
 * _declspec to __declspec
 */
#  define _declspec __declspec
#endif

#include <winioctl.h>

#ifdef _WIN64
#  define GWL_USERDATA GWLP_USERDATA
#endif

void sleep(int);

typedef UINT32 key_t;

#if defined(HAVE_MINGW)
#  if !defined(uid_t)
typedef UINT32 uid_t;
typedef UINT32 gid_t;
#  endif
#else
typedef UINT32 uid_t;
typedef UINT32 gid_t;
typedef UINT32 mode_t;
typedef INT64 ssize_t;
#  define HAVE_SSIZE_T 1
#endif /* HAVE_MINGW */

#if defined(HAVE_MSVC)
#  define NO_OLDNAMES
#endif

typedef struct _REPARSE_DATA_BUFFER {
  ULONG ReparseTag;
  USHORT ReparseDataLength;
  USHORT Reserved;
  union {
    struct {
      USHORT SubstituteNameOffset;
      USHORT SubstituteNameLength;
      USHORT PrintNameOffset;
      USHORT PrintNameLength;
      ULONG Flags;
      WCHAR PathBuffer[1];
    } SymbolicLinkReparseBuffer;
    struct {
      USHORT SubstituteNameOffset;
      USHORT SubstituteNameLength;
      USHORT PrintNameOffset;
      USHORT PrintNameLength;
      WCHAR PathBuffer[1];
    } MountPointReparseBuffer;
    struct {
      UCHAR DataBuffer[1];
    } GenericReparseBuffer;
  } DUMMYUNIONNAME;
} REPARSE_DATA_BUFFER, *PREPARSE_DATA_BUFFER;

#define ftello _ftelli64
#define fseeko _fseeki64

struct dirent {
  uint64_t d_ino;
  uint32_t d_off;
  uint16_t d_reclen;
  char d_name[256];
};
typedef void DIR;

#if !defined(__cplusplus)
#  if !defined(true)
#    define true 1
#  endif
#  if !defined(false)
#    define false 0
#  endif
#endif

#ifndef _TIMEZONE_DEFINED /* also in sys/time.h */
#  define _TIMEZONE_DEFINED
struct timezone {
  int foo;
};
#endif

#ifndef HAVE_MINGW
int strcasecmp(const char*, const char*);
#endif
int gettimeofday(struct timeval*, struct timezone*);

#if !defined(EETXTBUSY)
#  define EETXTBUSY 26
#endif

#if !defined(ETIMEDOUT)
#  define ETIMEDOUT 55
#endif

#if !defined(ENOMEDIUM)
#  define ENOMEDIUM 123
#endif

#if !defined(ENODATA)
#  define ENODATA 61
#endif

struct stat {
  _dev_t st_dev;
  uint64_t st_ino;
  uint16_t st_mode;
  int16_t st_nlink;
  uint32_t st_uid;
  uint32_t st_gid;
  _dev_t st_rdev;
  uint64_t st_size;
  time_t st_atime;
  time_t st_mtime;
  time_t st_ctime;
  uint32_t st_blksize;
  uint64_t st_blocks;
};

#undef S_IFMT
#define S_IFMT 0170000 /* file type mask */
#undef S_IFDIR
#define S_IFDIR 0040000 /* directory */
#define S_IFCHR 0020000 /* character special */
#define S_IFBLK 0060000 /* block special */
#define S_IFIFO 0010000 /* pipe */
#undef S_IFREG
#define S_IFREG 0100000 /* regular */
#undef S_IFLNK
#define S_IFLNK 0120000  /* symbolic link */
#define S_IREAD 0000400  /* read permission, owner */
#define S_IWRITE 0000200 /* write permission, owner */
#define S_IEXEC 0000100  /* execute/search permission, owner */

#define S_IRUSR S_IREAD
#define S_IWUSR S_IWRITE
#define S_IXUSR S_IEXEC
#define S_ISREG(x) (((x) & S_IFMT) == S_IFREG)
#define S_ISLNK(x) (((x) & S_IFMT) == S_IFLNK)
#define S_ISDIR(x) (((x) & S_IFMT) == S_IFDIR)
#define S_ISCHR(x) 0
#define S_ISBLK(x) (((x) & S_IFMT) == S_IFBLK)
#define S_ISFIFO(x) 0

#define S_IRGRP 000040
#define S_IWGRP 000020
#define S_IXGRP 000010

#define S_IROTH 00004
#define S_IWOTH 00002
#define S_IXOTH 00001

#define S_IRWXO 000007
#define S_IRWXG 000070
#define S_ISUID 004000
#define S_ISGID 002000
#define S_ISVTX 001000
#define S_ISSOCK(x) 0

#define _S_IFDIR S_IFDIR
#define _stat stat

#if __STDC__
#  define O_RDONLY _O_RDONLY
#  define O_WRONLY _O_WRONLY
#  define O_RDWR _O_RDWR
#  define O_CREAT _O_CREAT
#  define O_TRUNC _O_TRUNC
#  ifndef O_NOFOLLOW
#    define O_NOFOLLOW 0x80000
#  endif

#  define isascii __isascii
#  define toascii __toascii
#  define iscsymf __iscsymf
#  define iscsym __iscsym
#endif

bool InitializeComSecurity();

bool CreateJunction(const char* szJunction, const char* szPath);
const char* errorString(void);

typedef char* (*t_pVSSPathConvert)(const char* szFilePath);
typedef wchar_t* (*t_pVSSPathConvertW)(const wchar_t* szFilePath);
bool SetVSSPathConvert(t_pVSSPathConvert pPathConvert,
                       t_pVSSPathConvertW pPathConvertW);

int lchown(const char*, uid_t uid, gid_t gid);
int chown(const char*, uid_t uid, gid_t gid);
#define O_NONBLOCK 04000
#define F_GETFL 3
#define F_SETFL 4

#ifndef MINGW64
#  define open _open
#endif

int fcntl(int fd, int cmd, long arg);
int fstat(intptr_t fd, struct stat* sb);

int inet_aton(const char* cp, struct in_addr* inp);
int kill(int pid, int signo);
int pipe(int[]);
int fork();
int waitpid(int, int*, int);

#if defined(HAVE_MSVC)
#  define strncasecmp strnicmp
#endif  // HAVE_MSVC

#define WNOHANG 0
#define WIFEXITED(x) 0
#define WEXITSTATUS(x) x
#define WIFSIGNALED(x) 0
#define WTERMSIG(x) x
#define SIGKILL 9
#define SIGUSR2 9999

#define HAVE_OLD_SOCKOPT

struct timespec;
int readdir(unsigned int fd, struct dirent* dirp, unsigned int count);
long int random(void);
void srandom(unsigned int seed);
int lstat(const char* filename, struct stat* sb);
int stat(const char* file, struct stat* sb);
long pathconf(const char* path, int name);
ssize_t readlink(const char* path, char* buf, size_t bufsiz);
int win32_symlink(const char* name1, const char* name2, _dev_t st_rdev);
int link(const char* existing, const char* newfile);

#define _PC_PATH_MAX 1
#define _PC_NAME_MAX 2

int geteuid();

DIR* opendir(const char* filename);
int closedir(DIR* dir);

struct passwd {
  char* foo;
};

struct group {
  char* foo;
};

struct passwd* getpwuid(uid_t);
struct group* getgrgid(uid_t);

struct sigaction {
  int sa_flags;
  void (*sa_handler)(int);
};
#define sigfillset(x)
#define sigaction(a, b, c)

#define mkdir(p, m) win32_mkdir(p)
#define chdir win32_chdir
extern "C" void syslog(int type, const char* fmt, ...);
#if !defined(LOG_DAEMON)
#  define LOG_DAEMON 0
#endif

#if !defined(HAVE_MINGW)
#  define R_OK 04
#  define W_OK 02
int stat(const char*, struct stat*);
#  if defined(__cplusplus)
#    define access _access
int execvp(const char*, char*[]);
extern "C" void* __cdecl _alloca(size_t);
#  endif
#endif  // !HAVE_MINGW

#define getpid _getpid

#define getppid() 0
#define gethostid() 0
#define getuid() 0
#define getgid() 0

#define getcwd win32_getcwd
#define chdir win32_chdir
#define fputs win32_fputs
char* win32_getcwd(char* buf, int maxlen);
int win32_chdir(const char* buf);
int win32_mkdir(const char* buf);
int win32_fputs(const char* string, FILE* stream);
#if defined(HAVE_MINGW)
#  define unlink win32_unlink
int win32_unlink(char const* filename);
#endif
int win32_chmod(const char*, mode_t, _dev_t);

char* win32_cgets(char* buffer, int len);

int WSA_Init(void);

/* Don't let OS go to sleep (usually a Laptop) while we are backing up */
void PreventOsSuspensions();
void AllowOsSuspensions();

typedef DWORD EXECUTION_STATE;
#ifndef ES_CONTINUOUS
#  define ES_CONTINUOUS 0x80000000
#endif
#ifndef ES_SYSTEM_REQUIRED
#  define ES_SYSTEM_REQUIRED 0x00000001
#endif
#ifndef ES_DISPLAY_REQUIRED
#  define ES_DISPLAY_REQUIRED 0x00000002
#endif
#ifndef ES_USER_PRESENT
#  define ES_USER_PRESENT 0x00000004
#endif

#if !defined(INVALID_FILE_ATTRIBUTES)
#  define INVALID_FILE_ATTRIBUTES ((DWORD) - 1)
#endif

#if defined(HAVE_MSVC)
inline unsigned long ffs(unsigned long word)
{
  unsigned long index;

  if (_BitScanForward(&index, word) != 0)
    return index + 1;
  else
    return 0;
}

#else
#  define ffs __builtin_ffs
#endif

bool win32_get_vmp_devicename(const char* filename, POOLMEM*& device);
int win32_ftruncate(int fd, int64_t length);
bool win32_restore_file_attributes(POOLMEM* ofname,
                                   HANDLE handle,
                                   WIN32_FILE_ATTRIBUTE_DATA* atts);

void Win32ResetConversionCache();
#undef ftruncate
#define ftruncate win32_ftruncate

#define FILE_ATTRIBUTE_VOLUME_MOUNT_POINT 0x10000000
#define FILE_ATTRIBUTES_JUNCTION_POINT 0x20000000
#define FILE_ATTRIBUTES_DEDUPED_ITEM 0x40000000
#define FILE_ATTRIBUTES_SYMBOLIC_LINK 0x80000000

#ifndef IO_REPARSE_TAG_DEDUP
#  define IO_REPARSE_TAG_DEDUP (0x80000013)
#endif

/*
 * use Readdir_r on windows as the compat layer has
 * an emulation for this call
 */
#define USE_READDIR_R

int win32_link(const char* target, const char* link);

#endif  // BAREOS_WIN32_COMPAT_INCLUDE_COMPAT_H_
