dllmain.c File Reference

#include "precomp.h"
#include <mbctype.h>
#include <sys/stat.h>
#include <internal/wine/msvcrt.h>
#include <wine/debug.h>

Include dependency graph for dllmain.c:

Go to the source code of this file.

Classes
struct	crtdll_stat

Typedefs
typedef short	crtdll_dev_t

Functions
	WINE_DEFAULT_DEBUG_CHANNEL (crtdll)
void	__getmainargs (int *argc, char ***argv, char ***envp, int expand_wildcards, int *new_mode)
BOOL	crt_process_init (void)
void	FreeEnvironment (char **environment)
static void	convert_struct_stat (struct crtdll_stat *dst, const struct _stat *src)
BOOL WINAPI	DllMain (PVOID hinstDll, ULONG dwReason, PVOID reserved)
void	__GetMainArgs (int *argc, char ***argv, char ***envp, int expand_wildcards)
int	CRTDLL__fstat (int fd, struct crtdll_stat *buf)
int	CRTDLL__stat (const char *path, struct crtdll_stat *buf)
char *	_strdec (const char *str1, const char *str2)
char *	_strinc (const char *str)
size_t	_strncnt (const char *str, size_t maxlen)
unsigned int	_strnextc (const char *str)
char *	_strninc (const char *str, size_t len)
char *	_strspnp (const char *str1, const char *str2)

Variables
unsigned int	CRTDLL__basemajor_dll = 0
unsigned int	CRTDLL__baseminor_dll = 0
unsigned int	CRTDLL__baseversion_dll = 0
unsigned int	CRTDLL__cpumode_dll = 0
unsigned int	CRTDLL__osmajor_dll = 0
unsigned int	CRTDLL__osminor_dll = 0
unsigned int	CRTDLL__osmode_dll = 0
unsigned int	CRTDLL__osversion_dll = 0
int	_fileinfo_dll
char **	_environ
char **	__initenv
wchar_t **	_wenviron
wchar_t **	__winitenv

Typedef Documentation

crtdll_dev_t

typedef short crtdll_dev_t

Definition at line 54 of file dllmain.c.

Function Documentation

__GetMainArgs()

void __GetMainArgs	(	int *	argc,
		char ***	argv,
		char ***	envp,
		int	expand_wildcards
	)

Definition at line 160 of file dllmain.c.

{
    int new_mode = 0;
    __getmainargs( argc, argv, envp, expand_wildcards, &new_mode );
}

__getmainargs()

void __getmainargs	(	int *	argc,
		char ***	argv,
		char ***	envp,
		int	expand_wildcards,
		int *	new_mode
	)

Definition at line 182 of file getargs.c.

{
   int i, doexpand, slashesAdded, escapedQuote, inQuotes, bufferIndex, anyLetter;
   size_t len;
   char* buffer;
 
   /* missing threading init */
 
   i = 0;
   doexpand = expand_wildcards;
   escapedQuote = FALSE;
   anyLetter = FALSE;
   slashesAdded = 0;
   inQuotes = 0;
   bufferIndex = 0;
 
   if (__argv && _environ)
   {
      *argv = __argv;
      *env = _environ;
      *argc = __argc;
      return;
   }
 
   __argc = 0;
 
   len = strlen(_acmdln);
   buffer = malloc(sizeof(char) * len);
 
   // Reference: https://learn.microsoft.com/en-us/cpp/c-language/parsing-c-command-line-arguments?view=msvc-170
   while (TRUE)
   {
      // Arguments are delimited by white space, which is either a space or a tab.
      if (i >= len || ((_acmdln[i] == ' ' || _acmdln[i] == '\t') && !inQuotes))
      {
         // Handle the case when empty spaces are in the end of the cmdline
         if (anyLetter)
         {
            aexpand(strndup(buffer, bufferIndex), doexpand);
         }
         // Copy the last element from buffer and quit the loop
         if (i >= len)
         {
            break;
         }
 
         while (_acmdln[i] == ' ' || _acmdln[i] == '\t')
            ++i;
         anyLetter = FALSE;
         bufferIndex = 0;
         slashesAdded = 0;
         escapedQuote = FALSE;
         continue;
      }
 
      anyLetter = TRUE;
 
      if (_acmdln[i] == '\\')
      {
         buffer[bufferIndex++] = _acmdln[i];
         ++slashesAdded;
         ++i;
         escapedQuote = FALSE;
         continue;
      }
 
      if (_acmdln[i] == '\"')
      {
         if (slashesAdded > 0)
         {
            if (slashesAdded % 2 == 0)
            {
               // If an even number of backslashes is followed by a double quotation mark, then one backslash (\‍)
               // is placed in the argv array for every pair of backslashes (\\‍), and the double quotation mark (")
               // is interpreted as a string delimiter.
               bufferIndex -= slashesAdded / 2;
            }
            else
            {
               // If an odd number of backslashes is followed by a double quotation mark, then one backslash (\‍)
               // is placed in the argv array for every pair of backslashes (\\‍) and the double quotation mark is
               // interpreted as an escape sequence by the remaining backslash, causing a literal double quotation mark (")
               // to be placed in argv.
               bufferIndex -= slashesAdded / 2 + 1;
               buffer[bufferIndex++] = '\"';
               slashesAdded = 0;
               escapedQuote = TRUE;
               ++i;
               continue;
            }
            slashesAdded = 0;
         }
         else if (!inQuotes && i > 0 && _acmdln[i - 1] == '\"' && !escapedQuote)
         {
            buffer[bufferIndex++] = '\"';
            ++i;
            escapedQuote = TRUE;
            continue;
         }
         slashesAdded = 0;
         escapedQuote = FALSE;
         inQuotes = !inQuotes;
         doexpand = inQuotes ? FALSE : expand_wildcards;
         ++i;
         continue;
      }
 
      buffer[bufferIndex++] = _acmdln[i];
      slashesAdded = 0;
      escapedQuote = FALSE;
      ++i;
   }
 
   /* Free the temporary buffer. */
   free(buffer);
 
   *argc = __argc;
   if (__argv == NULL)
   {
      __argv = (char**)malloc(sizeof(char*));
      __argv[0] = 0;
   }
   *argv = __argv;
   *env  = _environ;
 
   _pgmptr = malloc(MAX_PATH * sizeof(char));
   if (_pgmptr)
   {
      if (!GetModuleFileNameA(NULL, _pgmptr, MAX_PATH))
        _pgmptr[0] = '\0';
      else
        _pgmptr[MAX_PATH - 1] = '\0';
   }
   else
   {
      _pgmptr = _strdup(__argv[0]);
   }
 
   HeapValidate(GetProcessHeap(), 0, NULL);
 
   // if (new_mode) _set_new_mode(*new_mode);
}

Referenced by __GetMainArgs(), test___getmainargs(), test__environ(), and test__wenviron().

_strdec()

char * _strdec	(	const char *	str1,
		const char *	str2
	)

Definition at line 198 of file dllmain.c.

{
    return (char *)(str2 - 1);
}

_strinc()

char * _strinc

(

const char *

str

)

Definition at line 207 of file dllmain.c.

{
    return (char *)(str + 1);
}

_strncnt()

size_t _strncnt	(	const char *	str,
		size_t	maxlen
	)

Definition at line 216 of file dllmain.c.

{
    size_t len = strlen(str);
    return (len > maxlen) ? maxlen : len;
}

_strnextc()

unsigned int _strnextc

(

const char *

str

)

Definition at line 226 of file dllmain.c.

{
    return (unsigned int)str[0];
}

_strninc()

char * _strninc	(	const char *	str,
		size_t	len
	)

Definition at line 235 of file dllmain.c.

{
    return (char *)(str + len);
}

_strspnp()

char * _strspnp	(	const char *	str1,
		const char *	str2
	)

Definition at line 244 of file dllmain.c.

{
    str1 += strspn( str1, str2 );
    return *str1 ? (char*)str1 : NULL;
}

convert_struct_stat()

static void convert_struct_stat ( struct crtdll_stat *  dst, const struct _stat *  src  )

static

Definition at line 72 of file dllmain.c.

{
    dst->st_dev   = src->st_dev;
    dst->st_ino   = src->st_ino;
    dst->st_mode  = src->st_mode;
    dst->st_nlink = src->st_nlink;
    dst->st_uid   = src->st_uid;
    dst->st_gid   = src->st_gid;
    dst->st_rdev  = src->st_rdev;
    dst->st_size  = src->st_size;
    dst->st_atime = src->st_atime;
    dst->st_mtime = src->st_mtime;
    dst->st_ctime = src->st_ctime;
}

Referenced by CRTDLL__fstat(), and CRTDLL__stat().

crt_process_init()

BOOL crt_process_init

(

void

)

Definition at line 21 of file crt_init.c.

{
    OSVERSIONINFOW osvi;
 
    /* initialize version info */
    osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOW);
    GetVersionExW(&osvi);
    _winver     = (osvi.dwMajorVersion << 8) | osvi.dwMinorVersion;
    _winmajor   = osvi.dwMajorVersion;
    _winminor   = osvi.dwMinorVersion;
    _osplatform = osvi.dwPlatformId;
    _osver      = osvi.dwBuildNumber;
 
    /* create tls stuff */
    if (!msvcrt_init_tls())
        return FALSE;
 
    if (!msvcrt_init_heap())
        return FALSE;
 
    if (BlockEnvToEnvironA() < 0)
        return FALSE;
 
    if (BlockEnvToEnvironW() < 0)
    {
        FreeEnvironment(_environ);
        return FALSE;
    }
 
    _acmdln = _strdup(GetCommandLineA());
    _wcmdln = _wcsdup(GetCommandLineW());
 
    /* Initialization of the WINE code */
    msvcrt_init_mt_locks();
 
    //msvcrt_init_math();
    msvcrt_init_io();
    //msvcrt_init_console();
    //msvcrt_init_args();
    //msvcrt_init_signals();
 
    return TRUE;
}

Referenced by DllMain(), and msvcrt_init_exception().

CRTDLL__fstat()

int CRTDLL__fstat	(	int	fd,
		struct crtdll_stat *	buf
	)

Definition at line 170 of file dllmain.c.

{
    extern int _fstat(int,struct _stat*);
    struct _stat st;
    int ret;
 
    if (!(ret = _fstat( fd, &st ))) convert_struct_stat( buf, &st );
    return ret;
}

CRTDLL__stat()

int CRTDLL__stat	(	const char *	path,
		struct crtdll_stat *	buf
	)

Definition at line 184 of file dllmain.c.

{
    extern int _stat(const char*,struct _stat*);
    struct _stat st;
    int ret;
 
    if (!(ret = _stat( path, &st ))) convert_struct_stat( buf, &st );
    return ret;
}

DllMain()

BOOL WINAPI DllMain	(	PVOID	hinstDll,
		ULONG	dwReason,
		PVOID	reserved
	)

Definition at line 91 of file dllmain.c.

{
    DWORD version;
    switch (dwReason)
    {
    case DLL_PROCESS_ATTACH:
        version = GetVersion();
 
        /* initialize version info */
        CRTDLL__basemajor_dll   = (version >> 24) & 0xFF;
        CRTDLL__baseminor_dll   = (version >> 16) & 0xFF;
        CRTDLL__baseversion_dll = (version >> 16);
        CRTDLL__cpumode_dll     = 1; /* FIXME */
        CRTDLL__osmajor_dll     = (version >>8) & 0xFF;
        CRTDLL__osminor_dll     = (version & 0xFF);
        CRTDLL__osmode_dll      = 1; /* FIXME */
        CRTDLL__osversion_dll   = (version & 0xFFFF);
 
        if (!crt_process_init())
        {
            ERR("crt_init() failed!\n");
            return FALSE;
        }
 
        TRACE("Attach done\n");
        break;
    case DLL_THREAD_ATTACH:
        break;
 
    case DLL_THREAD_DETACH:
        msvcrt_free_tls_mem();
        break;
 
    case DLL_PROCESS_DETACH:
        TRACE("Detach\n");
        /* Deinit of the WINE code */
        msvcrt_free_io();
        if (reserved) break;
        msvcrt_free_popen_data();
        msvcrt_free_mt_locks();
        //msvcrt_free_console();
        //msvcrt_free_args();
        //msvcrt_free_signals();
        msvcrt_free_tls_mem();
        if (!msvcrt_free_tls())
          return FALSE;
        //MSVCRT__free_locale(MSVCRT_locale);
 
        if (__winitenv && __winitenv != _wenviron)
            FreeEnvironment((char**)__winitenv);
        if (_wenviron)
            FreeEnvironment((char**)_wenviron);
 
        if (__initenv && __initenv != _environ)
            FreeEnvironment(__initenv);
        if (_environ)
            FreeEnvironment(_environ);
 
        TRACE("Detach done\n");
        break;
    }
 
    return TRUE;
}

FreeEnvironment()

void FreeEnvironment

(

char **

environment

)

Internal function to deallocate environment block. Although it's parameter are defined as char**, it's able to work also with wide character environment block which are of type wchar_t**.

Parameters

environment

Environment to free.

Definition at line 190 of file environ.c.

{
   char **envptr;
   for (envptr = environment; *envptr != NULL; envptr++)
      free(*envptr);
   free(environment);
}

Referenced by DllMain(), and msvcrt_init_exception().

WINE_DEFAULT_DEBUG_CHANNEL()

WINE_DEFAULT_DEBUG_CHANNEL

(

crtdll

)

Variable Documentation

__initenv

char** __initenv

extern

Definition at line 24 of file environ.c.

Referenced by DllMain(), msvcrt_init_exception(), and Test___initenv().

__winitenv

wchar_t** __winitenv

extern

Definition at line 25 of file environ.c.

Referenced by DllMain(), msvcrt_init_exception(), and Test___winitenv().

_environ

char** _environ

extern

Definition at line 22 of file environ.c.

Referenced by DllMain(), and msvcrt_init_exception().

_fileinfo_dll

int _fileinfo_dll

Definition at line 45 of file dllmain.c.

_wenviron

wchar_t** _wenviron

extern

Definition at line 23 of file environ.c.

Referenced by DllMain(), and msvcrt_init_exception().

CRTDLL__basemajor_dll

unsigned int CRTDLL__basemajor_dll = 0

Definition at line 37 of file dllmain.c.

Referenced by DllMain().

CRTDLL__baseminor_dll

unsigned int CRTDLL__baseminor_dll = 0

Definition at line 38 of file dllmain.c.

Referenced by DllMain().

CRTDLL__baseversion_dll

unsigned int CRTDLL__baseversion_dll = 0

Definition at line 39 of file dllmain.c.

Referenced by DllMain().

CRTDLL__cpumode_dll

unsigned int CRTDLL__cpumode_dll = 0

Definition at line 40 of file dllmain.c.

Referenced by DllMain().

CRTDLL__osmajor_dll

unsigned int CRTDLL__osmajor_dll = 0

Definition at line 41 of file dllmain.c.

Referenced by DllMain().

CRTDLL__osminor_dll

unsigned int CRTDLL__osminor_dll = 0

Definition at line 42 of file dllmain.c.

Referenced by DllMain().

CRTDLL__osmode_dll

unsigned int CRTDLL__osmode_dll = 0

Definition at line 43 of file dllmain.c.

Referenced by DllMain().

CRTDLL__osversion_dll

unsigned int CRTDLL__osversion_dll = 0

Definition at line 44 of file dllmain.c.

Referenced by DllMain().