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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
***************************************************************************/
#include "setup.h"
#if defined(MSDOS) || defined(WIN32)
#if defined(HAVE_LIBGEN_H) && defined(HAVE_BASENAME)
# include <libgen.h>
#endif
#include "tool_bname.h"
#include "tool_doswin.h"
#include "memdebug.h" /* keep this as LAST include */
/*
* Macros ALWAYS_TRUE and ALWAYS_FALSE are used to avoid compiler warnings.
*/
#define ALWAYS_TRUE (1)
#define ALWAYS_FALSE (0)
#if defined(_MSC_VER) && !defined(__POCC__)
# undef ALWAYS_TRUE
# undef ALWAYS_FALSE
# if (_MSC_VER < 1500)
# define ALWAYS_TRUE (0, 1)
# define ALWAYS_FALSE (1, 0)
# else
# define ALWAYS_TRUE \
__pragma(warning(push)) \
__pragma(warning(disable:4127)) \
(1) \
__pragma(warning(pop))
# define ALWAYS_FALSE \
__pragma(warning(push)) \
__pragma(warning(disable:4127)) \
(0) \
__pragma(warning(pop))
# endif
#endif
#ifdef WIN32
# undef PATH_MAX
# define PATH_MAX MAX_PATH
#endif
#ifndef S_ISCHR
# ifdef S_IFCHR
# define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
# else
# define S_ISCHR(m) (0) /* cannot tell if file is a device */
# endif
#endif
#ifdef WIN32
# define _use_lfn(f) ALWAYS_TRUE /* long file names always available */
#elif !defined(__DJGPP__) || (__DJGPP__ < 2) /* DJGPP 2.0 has _use_lfn() */
# define _use_lfn(f) ALWAYS_FALSE /* long file names never available */
#endif
static const char *msdosify (const char *file_name);
static char *rename_if_dos_device_name (char *file_name);
/*
* sanitize_dos_name: returns a newly allocated string holding a
* valid file name which will be a transformation of given argument
* in case this wasn't already a valid file name.
*
* This function takes ownership of given argument, free'ing it before
* returning. Caller is responsible of free'ing returned string. Upon
* out of memory condition function returns NULL.
*/
char *sanitize_dos_name(char *file_name)
{
char new_name[PATH_MAX];
if(!file_name)
return NULL;
if(strlen(file_name) >= PATH_MAX)
file_name[PATH_MAX-1] = '\0'; /* truncate it */
strcpy(new_name, msdosify(file_name));
free(file_name);
return strdup(rename_if_dos_device_name(new_name));
}
/* The following functions are taken with modification from the DJGPP
* port of tar 1.12. They use algorithms originally from DJTAR. */
static const char *msdosify (const char *file_name)
{
static char dos_name[PATH_MAX];
static const char illegal_chars_dos[] = ".+, ;=[]" /* illegal in DOS */
"|<>\\\":?*"; /* illegal in DOS & W95 */
static const char *illegal_chars_w95 = &illegal_chars_dos[8];
int idx, dot_idx;
const char *s = file_name;
char *d = dos_name;
const char *const dlimit = dos_name + sizeof(dos_name) - 1;
const char *illegal_aliens = illegal_chars_dos;
size_t len = sizeof(illegal_chars_dos) - 1;
/* Support for Windows 9X VFAT systems, when available. */
if(_use_lfn(file_name)) {
illegal_aliens = illegal_chars_w95;
len -= (illegal_chars_w95 - illegal_chars_dos);
}
/* Get past the drive letter, if any. */
if(s[0] >= 'A' && s[0] <= 'z' && s[1] == ':') {
*d++ = *s++;
*d++ = *s++;
}
for(idx = 0, dot_idx = -1; *s && d < dlimit; s++, d++) {
if(memchr(illegal_aliens, *s, len)) {
/* Dots are special: DOS doesn't allow them as the leading character,
and a file name cannot have more than a single dot. We leave the
first non-leading dot alone, unless it comes too close to the
beginning of the name: we want sh.lex.c to become sh_lex.c, not
sh.lex-c. */
if(*s == '.') {
if(idx == 0 && (s[1] == '/' || (s[1] == '.' && s[2] == '/'))) {
/* Copy "./" and "../" verbatim. */
*d++ = *s++;
if(*s == '.')
*d++ = *s++;
*d = *s;
}
else if(idx == 0)
*d = '_';
else if(dot_idx >= 0) {
if(dot_idx < 5) { /* 5 is a heuristic ad-hoc'ery */
d[dot_idx - idx] = '_'; /* replace previous dot */
*d = '.';
}
else
*d = '-';
}
else
*d = '.';
if(*s == '.')
dot_idx = idx;
}
else if(*s == '+' && s[1] == '+') {
if(idx - 2 == dot_idx) { /* .c++, .h++ etc. */
*d++ = 'x';
*d = 'x';
}
else {
/* libg++ etc. */
memcpy (d, "plus", 4);
d += 3;
}
s++;
idx++;
}
else
*d = '_';
}
else
*d = *s;
if(*s == '/') {
idx = 0;
dot_idx = -1;
}
else
idx++;
}
*d = '\0';
return dos_name;
}
static char *rename_if_dos_device_name (char *file_name)
{
/* We could have a file whose name is a device on MS-DOS. Trying to
* retrieve such a file would fail at best and wedge us at worst. We need
* to rename such files. */
char *base;
struct_stat st_buf;
char fname[PATH_MAX];
strncpy(fname, file_name, PATH_MAX-1);
fname[PATH_MAX-1] = '\0';
base = basename(fname);
if(((stat(base, &st_buf)) == 0) && (S_ISCHR(st_buf.st_mode))) {
size_t blen = strlen(base);
if(strlen(fname) >= PATH_MAX-1) {
/* Make room for the '_' */
blen--;
base[blen] = '\0';
}
/* Prepend a '_'. */
memmove(base + 1, base, blen + 1);
base[0] = '_';
strcpy(file_name, fname);
}
return file_name;
}
#endif /* MSDOS || WIN32 */
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