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Sweden-Number/libs/wine/config.c

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/*
* Configuration parameters shared between Wine server and clients
*
* Copyright 2002 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include "wine/asm.h"
#ifdef __ASM_OBSOLETE
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/stat.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_PWD_H
#include <pwd.h>
#endif
#ifdef __APPLE__
#include <crt_externs.h>
#include <spawn.h>
#ifndef _POSIX_SPAWN_DISABLE_ASLR
#define _POSIX_SPAWN_DISABLE_ASLR 0x0100
#endif
#endif
static char *bindir;
static char *dlldir;
static char *datadir;
const char *build_dir;
static char *argv0_name;
static char *wineserver64;
#ifdef __GNUC__
static void fatal_error( const char *err, ... ) __attribute__((noreturn,format(printf,1,2)));
#endif
#if defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__)
static const char exe_link[] = "/proc/self/exe";
#elif defined (__FreeBSD__) || defined(__DragonFly__)
static const char exe_link[] = "/proc/curproc/file";
#else
static const char exe_link[] = "";
#endif
/* die on a fatal error */
static void fatal_error( const char *err, ... )
{
va_list args;
va_start( args, err );
fprintf( stderr, "wine: " );
vfprintf( stderr, err, args );
va_end( args );
exit(1);
}
/* malloc wrapper */
static void *xmalloc( size_t size )
{
void *res;
if (!size) size = 1;
if (!(res = malloc( size ))) fatal_error( "virtual memory exhausted\n");
return res;
}
/* strdup wrapper */
static char *xstrdup( const char *str )
{
size_t len = strlen(str) + 1;
char *res = xmalloc( len );
memcpy( res, str, len );
return res;
}
/* build a path from the specified dir and name */
static char *build_path( const char *dir, const char *name )
{
size_t len = strlen(dir);
char *ret = xmalloc( len + strlen(name) + 2 );
memcpy( ret, dir, len );
if (len && ret[len-1] != '/') ret[len++] = '/';
strcpy( ret + len, name );
return ret;
}
/* return the directory that contains the library at run-time */
static char *get_runtime_libdir(void)
{
Dl_info info;
char *libdir;
if (dladdr( get_runtime_libdir, &info ) && info.dli_fname[0] == '/')
{
const char *p = strrchr( info.dli_fname, '/' );
unsigned int len = p - info.dli_fname;
if (!len) len++; /* include initial slash */
libdir = xmalloc( len + 1 );
memcpy( libdir, info.dli_fname, len );
libdir[len] = 0;
return libdir;
}
return NULL;
}
/* read a symlink and return its directory */
static char *symlink_dirname( const char *name )
{
char *p, *fullpath = realpath( name, NULL );
if (fullpath)
{
p = strrchr( fullpath, '/' );
if (p == fullpath) p++;
if (p) *p = 0;
}
return fullpath;
}
/* return the directory that contains the main exe at run-time */
static char *get_runtime_exedir(void)
{
if (exe_link[0]) return symlink_dirname( exe_link );
return NULL;
}
/* return the base directory from argv0 */
static char *get_runtime_argvdir( const char *argv0 )
{
char *p, *bindir, *cwd;
int len, size;
if (!(p = strrchr( argv0, '/' ))) return NULL;
len = p - argv0;
if (!len) len++; /* include leading slash */
if (argv0[0] == '/') /* absolute path */
{
bindir = xmalloc( len + 1 );
memcpy( bindir, argv0, len );
bindir[len] = 0;
}
else
{
/* relative path, make it absolute */
for (size = 256 + len; ; size *= 2)
{
if (!(cwd = malloc( size ))) return NULL;
if (getcwd( cwd, size - len ))
{
bindir = cwd;
cwd += strlen(cwd);
*cwd++ = '/';
memcpy( cwd, argv0, len );
cwd[len] = 0;
break;
}
free( cwd );
if (errno != ERANGE) return NULL;
}
}
return bindir;
}
/* retrieve the default dll dir */
const char *get_dlldir( const char **default_dlldir )
{
*default_dlldir = DLLDIR;
return dlldir;
}
/* check if bindir is valid by checking for wineserver */
static int is_valid_bindir( const char *bindir )
{
struct stat st;
char *path = build_path( bindir, "wineserver" );
int ret = (stat( path, &st ) != -1);
free( path );
return ret;
}
/* check if dlldir is valid by checking for ntdll */
static int is_valid_dlldir( const char *dlldir )
{
struct stat st;
char *path = build_path( dlldir, "ntdll.dll.so" );
int ret = (stat( path, &st ) != -1);
free( path );
return ret;
}
/* check if basedir is a valid build dir by checking for wineserver and ntdll */
/* helper for running_from_build_dir */
static inline int is_valid_build_dir( char *basedir, int baselen )
{
struct stat st;
strcpy( basedir + baselen, "/server/wineserver" );
if (stat( basedir, &st ) == -1) return 0; /* no wineserver found */
/* check for ntdll too to make sure */
strcpy( basedir + baselen, "/dlls/ntdll/ntdll.dll.so" );
if (stat( basedir, &st ) == -1) return 0; /* no ntdll found */
basedir[baselen] = 0;
return 1;
}
/* check if we are running from the build directory */
static char *running_from_build_dir( const char *basedir )
{
const char *p;
char *path;
/* remove last component from basedir */
p = basedir + strlen(basedir) - 1;
while (p > basedir && *p == '/') p--;
while (p > basedir && *p != '/') p--;
if (p == basedir) return NULL;
path = xmalloc( p - basedir + sizeof("/dlls/ntdll/ntdll.dll.so") );
memcpy( path, basedir, p - basedir );
if (!is_valid_build_dir( path, p - basedir ))
{
/* remove another component */
while (p > basedir && *p == '/') p--;
while (p > basedir && *p != '/') p--;
if (p == basedir || !is_valid_build_dir( path, p - basedir ))
{
free( path );
return NULL;
}
}
return path;
}
/* try to set the specified directory as bindir, or set build_dir if it's inside the build directory */
static int set_bindir( char *dir )
{
if (!dir) return 0;
if (is_valid_bindir( dir ))
{
bindir = dir;
dlldir = build_path( bindir, BIN_TO_DLLDIR );
}
else
{
build_dir = running_from_build_dir( dir );
free( dir );
}
return bindir || build_dir;
}
/* try to set the specified directory as dlldir, or set build_dir if it's inside the build directory */
static int set_dlldir( char *libdir )
{
char *path;
if (!libdir) return 0;
path = build_path( libdir, LIB_TO_DLLDIR );
if (is_valid_dlldir( path ))
{
dlldir = path;
bindir = build_path( libdir, LIB_TO_BINDIR );
}
else
{
build_dir = running_from_build_dir( libdir );
free( path );
}
free( libdir );
return dlldir || build_dir;
}
/* initialize the argv0 path */
void wine_init_argv0_path_obsolete( const char *argv0 )
{
const char *basename, *wineloader;
if (!(basename = strrchr( argv0, '/' ))) basename = argv0;
else basename++;
if (set_bindir( get_runtime_exedir() )) goto done;
if (set_dlldir( get_runtime_libdir() )) goto done;
if (set_bindir( get_runtime_argvdir( argv0 ))) goto done;
if ((wineloader = getenv( "WINELOADER" ))) set_bindir( get_runtime_argvdir( wineloader ));
done:
if (build_dir)
{
argv0_name = build_path( "loader/", basename );
if (sizeof(int) == sizeof(void *))
{
char *loader, *linkname = build_path( build_dir, "loader/wine64" );
if ((loader = symlink_dirname( linkname )))
{
wineserver64 = build_path( loader, "../server/wineserver" );
free( loader );
}
free( linkname );
}
}
else
{
if (bindir) datadir = build_path( bindir, BIN_TO_DATADIR );
argv0_name = xstrdup( basename );
}
}
static const char server_config_dir[] = "/.wine"; /* config dir relative to $HOME */
static const char server_root_prefix[] = "/tmp/.wine"; /* prefix for server root dir */
static const char server_dir_prefix[] = "/server-"; /* prefix for server dir */
static char *config_dir;
static char *server_dir;
static char *user_name;
/* check if a string ends in a given substring */
static inline int strendswith( const char* str, const char* end )
{
size_t len = strlen( str );
size_t tail = strlen( end );
return len >= tail && !strcmp( str + len - tail, end );
}
/* remove all trailing slashes from a path name */
static inline void remove_trailing_slashes( char *path )
{
int len = strlen( path );
while (len > 1 && path[len-1] == '/') path[--len] = 0;
}
/* die on a fatal error */
static void fatal_perror( const char *err, ... )
{
va_list args;
va_start( args, err );
fprintf( stderr, "wine: " );
vfprintf( stderr, err, args );
perror( " " );
va_end( args );
exit(1);
}
/* initialize the server directory value */
static void init_server_dir( dev_t dev, ino_t ino )
{
char *p, *root;
#ifdef __ANDROID__ /* there's no /tmp dir on Android */
root = build_path( config_dir, ".wineserver" );
#else
root = xmalloc( sizeof(server_root_prefix) + 12 );
sprintf( root, "%s-%u", server_root_prefix, getuid() );
#endif
server_dir = xmalloc( strlen(root) + sizeof(server_dir_prefix) + 2*sizeof(dev) + 2*sizeof(ino) + 2 );
strcpy( server_dir, root );
strcat( server_dir, server_dir_prefix );
p = server_dir + strlen(server_dir);
if (dev != (unsigned long)dev)
p += sprintf( p, "%lx%08lx-", (unsigned long)((unsigned long long)dev >> 32), (unsigned long)dev );
else
p += sprintf( p, "%lx-", (unsigned long)dev );
if (ino != (unsigned long)ino)
sprintf( p, "%lx%08lx", (unsigned long)((unsigned long long)ino >> 32), (unsigned long)ino );
else
sprintf( p, "%lx", (unsigned long)ino );
free( root );
}
/* initialize all the paths values */
static void init_paths(void)
{
struct stat st;
const char *home = getenv( "HOME" );
const char *user = NULL;
const char *prefix = getenv( "WINEPREFIX" );
char uid_str[32];
struct passwd *pwd = getpwuid( getuid() );
if (pwd)
{
user = pwd->pw_name;
if (!home) home = pwd->pw_dir;
}
if (!user)
{
sprintf( uid_str, "%lu", (unsigned long)getuid() );
user = uid_str;
}
user_name = xstrdup( user );
/* build config_dir */
if (prefix)
{
config_dir = xstrdup( prefix );
remove_trailing_slashes( config_dir );
if (config_dir[0] != '/')
fatal_error( "invalid directory %s in WINEPREFIX: not an absolute path\n", prefix );
if (stat( config_dir, &st ) == -1)
{
if (errno == ENOENT) return; /* will be created later on */
fatal_perror( "cannot open %s as specified in WINEPREFIX", config_dir );
}
}
else
{
if (!home) fatal_error( "could not determine your home directory\n" );
if (home[0] != '/') fatal_error( "your home directory %s is not an absolute path\n", home );
config_dir = xmalloc( strlen(home) + sizeof(server_config_dir) );
strcpy( config_dir, home );
remove_trailing_slashes( config_dir );
strcat( config_dir, server_config_dir );
if (stat( config_dir, &st ) == -1)
{
if (errno == ENOENT) return; /* will be created later on */
fatal_perror( "cannot open %s", config_dir );
}
}
if (!S_ISDIR(st.st_mode)) fatal_error( "%s is not a directory\n", config_dir );
if (st.st_uid != getuid()) fatal_error( "%s is not owned by you\n", config_dir );
init_server_dir( st.st_dev, st.st_ino );
}
/* return the configuration directory ($WINEPREFIX or $HOME/.wine) */
const char *wine_get_config_dir_obsolete(void)
{
if (!config_dir) init_paths();
return config_dir;
}
/* retrieve the wine data dir */
const char *wine_get_data_dir_obsolete(void)
{
return datadir;
}
/* retrieve the wine build dir (if we are running from there) */
const char *wine_get_build_dir_obsolete(void)
{
return build_dir;
}
/* return the full name of the server directory (the one containing the socket) */
const char *wine_get_server_dir_obsolete(void)
{
if (!server_dir)
{
if (!config_dir) init_paths();
else
{
struct stat st;
if (stat( config_dir, &st ) == -1)
{
if (errno != ENOENT) fatal_error( "cannot stat %s\n", config_dir );
return NULL; /* will have to try again once config_dir has been created */
}
init_server_dir( st.st_dev, st.st_ino );
}
}
return server_dir;
}
/* return the current user name */
const char *wine_get_user_name_obsolete(void)
{
if (!user_name) init_paths();
return user_name;
}
/* return the standard version string */
const char *wine_get_version_obsolete(void)
{
return PACKAGE_VERSION;
}
/* return the build id string */
const char *wine_get_build_id_obsolete(void)
{
return PACKAGE_VERSION;
}
/* exec a binary using the preloader if requested; helper for wine_exec_wine_binary */
static void preloader_exec( char **argv, int use_preloader )
{
if (use_preloader)
{
static const char preloader[] = "wine-preloader";
static const char preloader64[] = "wine64-preloader";
char *p, *full_name;
char **last_arg = argv, **new_argv;
if (!(p = strrchr( argv[0], '/' ))) p = argv[0];
else p++;
full_name = xmalloc( p - argv[0] + sizeof(preloader64) );
memcpy( full_name, argv[0], p - argv[0] );
if (strendswith( p, "64" ))
memcpy( full_name + (p - argv[0]), preloader64, sizeof(preloader64) );
else
memcpy( full_name + (p - argv[0]), preloader, sizeof(preloader) );
/* make a copy of argv */
while (*last_arg) last_arg++;
new_argv = xmalloc( (last_arg - argv + 2) * sizeof(*argv) );
memcpy( new_argv + 1, argv, (last_arg - argv + 1) * sizeof(*argv) );
new_argv[0] = full_name;
#ifdef __APPLE__
{
posix_spawnattr_t attr;
posix_spawnattr_init( &attr );
posix_spawnattr_setflags( &attr, POSIX_SPAWN_SETEXEC | _POSIX_SPAWN_DISABLE_ASLR );
posix_spawn( NULL, full_name, NULL, &attr, new_argv, *_NSGetEnviron() );
posix_spawnattr_destroy( &attr );
}
#endif
execv( full_name, new_argv );
free( new_argv );
free( full_name );
}
execv( argv[0], argv );
}
/* exec a wine internal binary (either the wine loader or the wine server) */
void wine_exec_wine_binary_obsolete( const char *name, char **argv, const char *env_var )
{
const char *path, *pos, *ptr;
int use_preloader;
if (!name) name = argv0_name; /* no name means default loader */
#if defined(linux) || defined(__APPLE__)
use_preloader = !strendswith( name, "wineserver" );
#else
use_preloader = 0;
#endif
if ((ptr = strrchr( name, '/' )))
{
/* if we are in build dir and name contains a path, try that */
if (build_dir)
{
if (wineserver64 && !strcmp( name, "server/wineserver" ))
argv[0] = xstrdup( wineserver64 );
else
argv[0] = build_path( build_dir, name );
preloader_exec( argv, use_preloader );
free( argv[0] );
}
name = ptr + 1; /* get rid of path */
}
/* first, bin directory from the current libdir or argv0 */
if (bindir)
{
argv[0] = build_path( bindir, name );
preloader_exec( argv, use_preloader );
free( argv[0] );
}
/* then specified environment variable */
if (env_var)
{
argv[0] = (char *)env_var;
preloader_exec( argv, use_preloader );
}
/* now search in the Unix path */
if ((path = getenv( "PATH" )))
{
argv[0] = xmalloc( strlen(path) + strlen(name) + 2 );
pos = path;
for (;;)
{
while (*pos == ':') pos++;
if (!*pos) break;
if (!(ptr = strchr( pos, ':' ))) ptr = pos + strlen(pos);
memcpy( argv[0], pos, ptr - pos );
strcpy( argv[0] + (ptr - pos), "/" );
strcat( argv[0] + (ptr - pos), name );
preloader_exec( argv, use_preloader );
pos = ptr;
}
free( argv[0] );
}
/* and finally try BINDIR */
argv[0] = build_path( BINDIR, name );
preloader_exec( argv, use_preloader );
free( argv[0] );
}
__ASM_OBSOLETE(wine_init_argv0_path);
__ASM_OBSOLETE(wine_get_build_dir);
__ASM_OBSOLETE(wine_get_build_id);
__ASM_OBSOLETE(wine_get_config_dir);
__ASM_OBSOLETE(wine_get_data_dir);
__ASM_OBSOLETE(wine_get_server_dir);
__ASM_OBSOLETE(wine_get_user_name);
__ASM_OBSOLETE(wine_get_version);
__ASM_OBSOLETE(wine_exec_wine_binary);
#endif /* __ASM_OBSOLETE */
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