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Diffstat (limited to 'lib/win32/emu.h')
| -rw-r--r-- | lib/win32/emu.h | 424 |
1 files changed, 424 insertions, 0 deletions
diff --git a/lib/win32/emu.h b/lib/win32/emu.h new file mode 100644 index 00000000..f3389590 --- /dev/null +++ b/lib/win32/emu.h @@ -0,0 +1,424 @@ +// emulates unix syscalls to win32 functions + +#ifdef WIN32 + #define EMU_STRUCT_STAT struct emu_stat + #define EMU_STAT emu_stat + #define EMU_FSTAT emu_fstat + #define EMU_LSTAT emu_stat +#else + #define EMU_STRUCT_STAT struct stat + #define EMU_STAT ::stat + #define EMU_FSTAT ::fstat + #define EMU_LSTAT ::lstat +#endif + +#if ! defined EMU_INCLUDE && defined WIN32 +#define EMU_INCLUDE + +// basic types, may be required by other headers since we +// don't include sys/types.h + +#ifdef __MINGW32__ + #include <stdint.h> +#else // MSVC + typedef unsigned __int64 u_int64_t; + typedef unsigned __int64 uint64_t; + typedef __int64 int64_t; + typedef unsigned __int32 uint32_t; + typedef unsigned __int32 u_int32_t; + typedef __int32 int32_t; + typedef unsigned __int16 uint16_t; + typedef __int16 int16_t; + typedef unsigned __int8 uint8_t; + typedef __int8 int8_t; +#endif + +// emulated types, present on MinGW but not MSVC or vice versa + +#ifdef __MINGW32__ + typedef uint32_t u_int32_t; +#else + typedef unsigned int mode_t; + typedef unsigned int pid_t; +#endif + +// set up to include the necessary parts of Windows headers + +#define WIN32_LEAN_AND_MEAN + +#ifndef __MSVCRT_VERSION__ +#define __MSVCRT_VERSION__ 0x0601 +#endif + +// Windows headers + +#include <winsock2.h> +#include <fcntl.h> +#include <sys/stat.h> +#include <direct.h> +#include <errno.h> +#include <io.h> +#include <stdlib.h> +#include <string.h> +#include <stdio.h> +#include <stdarg.h> +#include <time.h> + +#include <string> + +// emulated functions + +#define gmtime_r( _clock, _result ) \ + ( *(_result) = *gmtime( (_clock) ), \ + (_result) ) + +#define ITIMER_REAL 0 + +#ifdef _MSC_VER +// Microsoft decided to deprecate the standard POSIX functions. Great! +#define open(file,flags,mode) _open(file,flags,mode) +#define close(fd) _close(fd) +#define dup(fd) _dup(fd) +#define read(fd,buf,count) _read(fd,buf,count) +#define write(fd,buf,count) _write(fd,buf,count) +#define lseek(fd,off,whence) _lseek(fd,off,whence) +#define fileno(struct_file) _fileno(struct_file) +#endif + +struct passwd { + char *pw_name; + char *pw_passwd; + int pw_uid; + int pw_gid; + time_t pw_change; + char *pw_class; + char *pw_gecos; + char *pw_dir; + char *pw_shell; + time_t pw_expire; +}; + +extern passwd gTempPasswd; +inline struct passwd * getpwnam(const char * name) +{ + //for the mo pretend to be root + gTempPasswd.pw_uid = 0; + gTempPasswd.pw_gid = 0; + + return &gTempPasswd; +} + +#define S_IRWXG 1 +#define S_IRWXO 2 +#define S_ISUID 4 +#define S_ISGID 8 +#define S_ISVTX 16 + +#ifndef __MINGW32__ + //not sure if these are correct + //S_IWRITE - writing permitted + //_S_IREAD - reading permitted + //_S_IREAD | _S_IWRITE - + #define S_IRUSR S_IWRITE + #define S_IWUSR S_IREAD + #define S_IRWXU (S_IREAD|S_IWRITE|S_IEXEC) + + #define S_ISREG(x) (S_IFREG & x) + #define S_ISDIR(x) (S_IFDIR & x) +#endif + +inline int chown(const char * Filename, u_int32_t uid, u_int32_t gid) +{ + //important - this needs implementing + //If a large restore is required then + //it needs to restore files AND permissions + //reference AdjustTokenPrivileges + //GetAccountSid + //InitializeSecurityDescriptor + //SetSecurityDescriptorOwner + //The next function looks like the guy to use... + //SetFileSecurity + + //indicate success + return 0; +} + +// Windows and Unix owners and groups are pretty fundamentally different. +// Ben prefers that we kludge here rather than litter the code with #ifdefs. +// Pretend to be root, and pretend that set...() operations succeed. +inline int setegid(int) +{ + return true; +} +inline int seteuid(int) +{ + return true; +} +inline int setgid(int) +{ + return true; +} +inline int setuid(int) +{ + return true; +} +inline int getgid(void) +{ + return 0; +} +inline int getuid(void) +{ + return 0; +} +inline int geteuid(void) +{ + return 0; +} + +#ifndef PATH_MAX +#define PATH_MAX MAX_PATH +#endif + +// MinGW provides a getopt implementation +#ifndef __MINGW32__ +#include "getopt.h" +#endif // !__MINGW32__ + +#define timespec timeval + +//win32 deals in usec not nsec - so need to ensure this follows through +#define tv_nsec tv_usec + +#ifndef __MINGW32__ + typedef int socklen_t; +#endif + +#define S_IRGRP S_IWRITE +#define S_IWGRP S_IREAD +#define S_IROTH S_IWRITE | S_IREAD +#define S_IWOTH S_IREAD | S_IREAD + +//again need to verify these +#define S_IFLNK 1 +#define S_IFSOCK 0 + +#define S_ISLNK(x) ( false ) + +#define vsnprintf _vsnprintf + +#ifndef __MINGW32__ +inline int strcasecmp(const char *s1, const char *s2) +{ + return _stricmp(s1,s2); +} +#endif + +#ifdef _DIRENT_H_ +#error You must not include the MinGW dirent.h! +#endif + +struct dirent +{ + char *d_name; + unsigned long d_type; +}; + +struct DIR +{ + intptr_t fd; // filedescriptor + // struct _finddata_t info; + struct _wfinddata_t info; + // struct _finddata_t info; + struct dirent result; // d_name (first time null) + wchar_t *name; // null-terminated byte string +}; + +DIR *opendir(const char *name); +struct dirent *readdir(DIR *dp); +int closedir(DIR *dp); + +// local constant to open file exclusively without shared access +#define O_LOCK 0x10000 + +extern DWORD winerrno; /* used to report errors from openfile() */ +HANDLE openfile(const char *filename, int flags, int mode); +inline int closefile(HANDLE handle) +{ + if (CloseHandle(handle) != TRUE) + { + errno = EINVAL; + return -1; + } + return 0; +} + +#define LOG_DEBUG LOG_INFO +#define LOG_INFO 6 +#define LOG_NOTICE LOG_INFO +#define LOG_WARNING 4 +#define LOG_ERR 3 +#define LOG_CRIT LOG_ERR +#define LOG_PID 0 +#define LOG_LOCAL5 0 +#define LOG_LOCAL6 0 + +void openlog (const char * daemonName, int, int); +void closelog(void); +void syslog (int loglevel, const char *fmt, ...); + +#define LOG_LOCAL0 0 +#define LOG_LOCAL1 0 +#define LOG_LOCAL2 0 +#define LOG_LOCAL3 0 +#define LOG_LOCAL4 0 +#define LOG_LOCAL5 0 +#define LOG_LOCAL6 0 +#define LOG_DAEMON 0 + +#ifndef __MINGW32__ +#define strtoll _strtoi64 +#endif + +inline unsigned int sleep(unsigned int secs) +{ + Sleep(secs*1000); + return(ERROR_SUCCESS); +} + +#define INFTIM -1 +#define POLLIN 0x1 +#define POLLERR 0x8 +#define POLLOUT 0x4 + +#define SHUT_RDWR SD_BOTH +#define SHUT_RD SD_RECEIVE +#define SHUT_WR SD_SEND + +struct pollfd +{ + SOCKET fd; + short int events; + short int revents; +}; + +inline int ioctl(SOCKET sock, int flag, int * something) +{ + //indicate success + return 0; +} + +extern "C" inline int getpid() +{ + return (int)GetCurrentProcessId(); +} + +inline int waitpid(pid_t pid, int *status, int) +{ + return 0; +} + +//this shouldn't be needed. +struct statfs +{ + TCHAR f_mntonname[MAX_PATH]; +}; + +struct emu_stat { + int st_dev; + uint64_t st_ino; + DWORD st_mode; + short st_nlink; + short st_uid; + short st_gid; + //_dev_t st_rdev; + uint64_t st_size; + time_t st_atime; + time_t st_mtime; + time_t st_ctime; +}; + +// need this for conversions +time_t ConvertFileTimeToTime_t(FILETIME *fileTime); +bool ConvertTime_tToFileTime(const time_t from, FILETIME *pTo); + +int emu_chdir (const char* pDirName); +int emu_mkdir (const char* pPathName); +int emu_unlink (const char* pFileName); +int emu_fstat (HANDLE file, struct emu_stat* st); +int emu_stat (const char* pName, struct emu_stat* st); +int emu_utimes (const char* pName, const struct timeval[]); +int emu_chmod (const char* pName, mode_t mode); +char* emu_getcwd (char* pBuffer, int BufSize); +int emu_rename (const char* pOldName, const char* pNewName); + +#define chdir(directory) emu_chdir (directory) +#define mkdir(path, mode) emu_mkdir (path) +#define unlink(file) emu_unlink (file) +#define utimes(buffer, times) emu_utimes (buffer, times) +#define chmod(file, mode) emu_chmod (file, mode) +#define getcwd(buffer, size) emu_getcwd (buffer, size) +#define rename(oldname, newname) emu_rename (oldname, newname) + +// Not safe to replace stat/fstat/lstat on mingw at least, as struct stat +// has a 16-bit st_ino and we need a 64-bit one. +// +// #define stat(filename, struct) emu_stat (filename, struct) +// #define lstat(filename, struct) emu_stat (filename, struct) +// #define fstat(handle, struct) emu_fstat (handle, struct) +// +// But lstat doesn't exist on Windows, so we have to provide something: + +#define lstat(filename, struct) stat(filename, struct) + +int statfs(const char * name, struct statfs * s); + +int poll(struct pollfd *ufds, unsigned long nfds, int timeout); + +struct iovec { + void *iov_base; /* Starting address */ + size_t iov_len; /* Number of bytes */ +}; + +int readv (int filedes, const struct iovec *vector, size_t count); +int writev(int filedes, const struct iovec *vector, size_t count); + +// The following functions are not emulations, but utilities for other +// parts of the code where Windows API is used or windows-specific stuff +// is needed, like codepage conversion. + +bool EnableBackupRights( void ); + +bool ConvertEncoding (const std::string& rSource, int sourceCodePage, + std::string& rDest, int destCodePage); +bool ConvertToUtf8 (const std::string& rSource, std::string& rDest, + int sourceCodePage); +bool ConvertFromUtf8 (const std::string& rSource, std::string& rDest, + int destCodePage); +bool ConvertUtf8ToConsole(const std::string& rSource, std::string& rDest); +bool ConvertConsoleToUtf8(const std::string& rSource, std::string& rDest); + +// Utility function which returns a default config file name, +// based on the path of the current executable. +std::string GetDefaultConfigFilePath(const std::string& rName); + +// GetErrorMessage() returns a system error message, like strerror() +// but for Windows error codes. +std::string GetErrorMessage(DWORD errorCode); + +// console_read() is a replacement for _cgetws which requires a +// relatively recent C runtime lib +int console_read(char* pBuffer, size_t BufferSize); + +#ifdef _MSC_VER + /* disable certain compiler warnings to be able to actually see the show-stopper ones */ + #pragma warning(disable:4101) // unreferenced local variable + #pragma warning(disable:4244) // conversion, possible loss of data + #pragma warning(disable:4267) // conversion, possible loss of data + #pragma warning(disable:4311) // pointer truncation + #pragma warning(disable:4700) // uninitialized local variable used (hmmmmm...) + #pragma warning(disable:4805) // unsafe mix of type and type 'bool' in operation + #pragma warning(disable:4800) // forcing value to bool 'true' or 'false' (performance warning) + #pragma warning(disable:4996) // POSIX name for this item is deprecated +#endif // _MSC_VER + +#endif // !EMU_INCLUDE && WIN32 |