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msdos.c

/*
  Copyright (c) 1990-2005 Info-ZIP.  All rights reserved.

  See the accompanying file LICENSE, version 2004-May-22 or later
  (the contents of which are also included in zip.h) for terms of use.
  If, for some reason, both of these files are missing, the Info-ZIP license
  also may be found at:  ftp://ftp.info-zip.org/pub/infozip/license.html
*/
#include "zip.h"

#ifndef UTIL    /* little or no material in this file is used by UTIL */

#include <dos.h>
#include <time.h>


#if defined(__GO32__) || defined(__TURBOC__)
#  include <dir.h> /* prototypes of find*() */
   typedef struct ffblk   ff_dir;
#  define FATTR (hidden_files ? FA_HIDDEN+FA_SYSTEM+FA_DIREC : FA_DIREC)
#  define FFIRST(n,d,a)   findfirst(n,(struct ffblk *)d,a)
#  define FNEXT(d)        findnext((struct ffblk *)d)
#  if (defined(__TURBOC__) || (defined(__DJGPP__) && (__DJGPP__ >=2)))
#    if (defined(__DJGPP__) && (__DJGPP__ == 2) && (__DJGPP_MINOR__ == 0))
#      include <libc/dosio.h>
#    endif
#    define GetFileMode(name) _chmod(name, 0)
#    define SetFileMode(name, attr) _chmod(name, 1, attr)
#  else /* DJGPP v1.x */
#    define GetFileMode(name) bdosptr(0x43, (name), 0)
#  endif
#endif /* __GO32__ || __TURBOC__ */

#if defined(MSC) || defined(__WATCOMC__)
   typedef struct find_t  ff_dir;
#  define FATTR (hidden_files ? _A_HIDDEN+_A_SYSTEM+_A_SUBDIR : _A_SUBDIR)
#  ifndef FA_LABEL
#    define FA_LABEL      _A_VOLID
#  endif
#  define FFIRST(n,d,a)   _dos_findfirst(n,a,(struct find_t *)d)
#  define FNEXT(d)        _dos_findnext((struct find_t *)d)
#  define ff_name         name
#  define ff_fdate        wr_date
#  define ff_ftime        wr_time
#  define ff_attrib       attrib
#endif /* MSC || __WATCOMC__ */

#ifdef __EMX__
#  ifdef EMX_OBSOLETE           /* emx 0.9b or earlier */
#    define size_t xxx_size_t
#    define wchar_t xxx_wchar_t
#    define tm xxx_tm
#    include <sys/emx.h>
#    undef size_t
#    undef wchar_t
#    undef tm
#  else /* !EMX_OBSOLETE */     /* emx 0.9c or newer */
#    include <emx/syscalls.h>
#  endif /* ?EMX_OBSOLETE */
   typedef struct _find   ff_dir;
#  define FATTR (hidden_files ? _A_HIDDEN+_A_SYSTEM+_A_SUBDIR : _A_SUBDIR)
#  define FA_LABEL        _A_VOLID
#  define FFIRST(n,d,a)   __findfirst(n,a,d)
#  define FNEXT(d)        __findnext(d)
#  define ff_name         name
#  define ff_fdate        date
#  define ff_ftime        time
#  define ff_attrib       attr
#  define GetFileMode(name) __chmod(name, 0, 0)
#  define SetFileMode(name, attr) __chmod(name, 1, attr)
#endif /* __EMX__ */

#ifndef SetFileMode
#  define SetFileMode(name, attr) _dos_setfileattr(name, attr)
#endif


#define PAD  0
#define PATH_END '/'

/* Library functions not in (most) header files */
int rmdir OF((const char *));
int utime OF((char *, ztimbuf *));

/* Local functions */
#ifndef GetFileMode
int GetFileMode OF((char *name));
#endif /* !GetFileMode */

local int  initDirSearch OF((char *name, ff_dir *ff_context_p));
local char *getVolumeLabel OF((int, ulg *, ulg *, time_t *));
local int  wild_recurse OF((char *, char *));

/* Module level variables */
extern char *label;
local ulg label_time = 0;
local ulg label_mode = 0;
local time_t label_utim = 0;

/* Module level constants */
local ZCONST char wild_match_all[] = "*.*";


#ifndef GetFileMode
int GetFileMode(char *name)
{
  unsigned int attr = 0;
  return (_dos_getfileattr(name, &attr) ? -1 : attr);
}
#endif /* !GetFileMode */

local int initDirSearch(name, ff_context_p)
  char *name;                   /* name of directory to scan */
  ff_dir *ff_context_p;         /* pointer to FFIRST/FNEXT context structure */
{
  int r;                        /* FFIRST return value */
  char *p, *q;                  /* temporary copy of name, and aux pointer */

  if ((p = malloc(strlen(name) + (2 + sizeof(wild_match_all)))) == NULL)
    return ZE_MEM;

  strcpy(p, name);
  q = p + strlen(p);
  if (q[-1] == ':')
    *q++ = '.';
  if ((q - p) > 0 && *(q - 1) != '/')
    *q++ = '/';
  strcpy(q, wild_match_all);
  r = FFIRST(p, ff_context_p, FATTR);
  free((zvoid *)p);

  return (r ? ZE_MISS : ZE_OK);
}

local char *getVolumeLabel(drive, vtime, vmode, vutim)
  int drive;    /* drive name: 'A' .. 'Z' or '\0' for current drive */
  ulg *vtime;   /* volume label creation time (DOS format) */
  ulg *vmode;   /* volume label file mode */
  time_t *vutim;/* volume label creation time (UNIX format) */

/* If a volume label exists for the given drive, return its name and
   set its time and mode. The returned name must be static data. */
{
  static char vol[14];
  ff_dir d;
  char *p;

  if (drive) {
    vol[0] = (char)drive;
    strcpy(vol+1, ":/");
  } else {
    strcpy(vol, "/");
  }
  strcat(vol, wild_match_all);
  if (FFIRST(vol, &d, FA_LABEL) == 0) {
    strncpy(vol, d.ff_name, sizeof(vol)-1);
    vol[sizeof(vol)-1] = '\0';   /* just in case */
    if ((p = strchr(vol, '.')) != NULL) /* remove dot, though PKZIP doesn't */
      strcpy(p, p + 1);
    *vtime = ((ulg)d.ff_fdate << 16) | ((ulg)d.ff_ftime & 0xffff);
    *vmode = (ulg)d.ff_attrib;
    *vutim = dos2unixtime(*vtime);
    return vol;
  }
  return NULL;
}


#ifdef MSDOS16
#define ONENAMELEN 12   /* no 16-bit compilers supports LFN */
#else
#define ONENAMELEN 255
#endif

/* whole is a pathname with wildcards, wildtail points somewhere in the  */
/* middle of it.  All wildcards to be expanded must come AFTER wildtail. */

local int wild_recurse(whole, wildtail)
char *whole;
char *wildtail;
{
    ff_dir dir;
    char *subwild, *name, *newwhole = NULL, *glue = NULL, plug = 0, plug2;
    ush newlen, amatch = 0;
    int e = ZE_MISS;

    if (!isshexp(wildtail)) {
        struct stat s;                          /* dummy buffer for stat() */

        if (!LSSTAT(whole, &s))                 /* file exists ? */
            return procname(whole, 0);
        else
            return ZE_MISS;                     /* woops, no wildcards! */
    }

    /* back up thru path components till existing dir found */
    do {
        name = wildtail + strlen(wildtail) - 1;
        for (;;)
            if (name-- <= wildtail || *name == PATH_END) {
                subwild = name + 1;
                plug2 = *subwild;
                *subwild = 0;
                break;
            }
        if (glue)
            *glue = plug;
        glue = subwild;
        plug = plug2;
        e = initDirSearch(whole, &dir);
    } while (e == ZE_MISS && subwild > wildtail);
    wildtail = subwild;                 /* skip past non-wild components */
    if (e != ZE_OK) {
        if (glue)
            *glue = plug;
        goto ohforgetit;
    }
    subwild = strchr(wildtail + 1, PATH_END);
    /* this "+ 1" dodges the  ^^^ hole left by *glue == 0 */
    if (subwild != NULL) {
        *(subwild++) = 0;               /* wildtail = one component pattern */
        newlen = strlen(whole) + strlen(subwild) + (ONENAMELEN + 2);
    } else
        newlen = strlen(whole) + (ONENAMELEN + 1);
    if ((newwhole = malloc(newlen)) == NULL) {
        if (glue)
            *glue = plug;
        e = ZE_MEM;
        goto ohforgetit;
    }
    strcpy(newwhole, whole);
    newlen = strlen(newwhole);
    if (glue)
        *glue = plug;                           /* repair damage to whole */
    if (!isshexp(wildtail)) {
        e = ZE_MISS;                            /* non-wild name not found */
        goto ohforgetit;
    }

    do {
        if (strcmp(dir.ff_name, ".") && strcmp(dir.ff_name, "..")
                                  && MATCH(wildtail, dir.ff_name, 0)) {
            strcpy(newwhole + newlen, dir.ff_name);
            if (subwild) {
                name = newwhole + strlen(newwhole);
                *(name++) = PATH_END;
                strcpy(name, subwild);
                e = wild_recurse(newwhole, name);
            } else
                e = procname(newwhole, 0);
            newwhole[newlen] = 0;
            if (e == ZE_OK)
                amatch = 1;
            else if (e != ZE_MISS)
                break;
        }
    } while (FNEXT(&dir) == 0);

  ohforgetit:
    if (subwild)
        *--subwild = PATH_END;
    if (newwhole)
        free(newwhole);
    if (e == ZE_MISS && amatch)
        e = ZE_OK;
    return e;
}

int wild(w)
char *w;                /* path/pattern to match */
/* If not in exclude mode, expand the pattern based on the contents of the
   file system.  Return an error code in the ZE_ class. */
{
    char *p;            /* path */
    char *q;            /* diskless path */
    int e;              /* result */

    if (volume_label == 1) {
      volume_label = 2;
      label = getVolumeLabel((w != NULL && w[1] == ':') ? to_up(w[0]) : '\0',
                             &label_time, &label_mode, &label_utim);
      if (label != NULL)
        (void)newname(label, 0, 0);
      if (w == NULL || (w[1] == ':' && w[2] == '\0')) return ZE_OK;
      /* "zip -$ foo a:" can be used to force drive name */
    }
    /* special handling of stdin request */
    if (strcmp(w, "-") == 0)   /* if compressing stdin */
        return newname(w, 0, 0);

    /* Allocate and copy pattern, leaving room to add "." if needed */
    if ((p = malloc(strlen(w) + 2)) == NULL)
        return ZE_MEM;
    strcpy(p, w);

    /* Normalize path delimiter as '/' */
    for (q = p; *q; q++)                  /* use / consistently */
        if (*q == '\\')
            *q = '/';

    /* Separate the disk part of the path */
    q = strchr(p, ':');
    if (q != NULL) {
        if (strchr(++q, ':'))     /* sanity check for safety of wild_recurse */
            return ZE_MISS;
    } else
        q = p;

    /* Normalize bare disk names */
    if (q > p && !*q)
        strcpy(q, ".");

    /* Here we go */
    e = wild_recurse(p, q);
    free((zvoid *)p);
    return e;
}

int procname(n, caseflag)
char *n;                /* name to process */
int caseflag;           /* true to force case-sensitive match */
/* Process a name or sh expression to operate on (or exclude).  Return
   an error code in the ZE_ class. */
{
  char *a;              /* path and name for recursion */
  ff_dir *d;            /* control structure for FFIRST/FNEXT */
  char *e;              /* pointer to name from readd() */
  int m;                /* matched flag */
  int ff_status;        /* return value of FFIRST/FNEXT */
  char *p;              /* path for recursion */
  struct stat s;        /* result of stat() */
  struct zlist far *z;  /* steps through zfiles list */

  if (n == NULL)        /* volume_label request in freshen|delete mode ?? */
    return ZE_OK;

  if (strcmp(n, "-") == 0)   /* if compressing stdin */
    return newname(n, 0, caseflag);
  else if (*n == '\0') return ZE_MISS;
  else if (LSSTAT(n, &s)
#ifdef __TURBOC__
           /* For this compiler, stat() succeeds on wild card names! */
           || isshexp(n)
#endif
          )
  {
    /* Not a file or directory--search for shell expression in zip file */
    if (caseflag) {
      p = malloc(strlen(n) + 1);
      if (p != NULL)
        strcpy(p, n);
    } else
      p = ex2in(n, 0, (int *)NULL);     /* shouldn't affect matching chars */
    m = 1;
    for (z = zfiles; z != NULL; z = z->nxt) {
      if (MATCH(p, z->iname, caseflag))
      {
        z->mark = pcount ? filter(z->zname, caseflag) : 1;
        if (z->mark) z->dosflag = 1;    /* force DOS attribs for incl. names */
        if (verbose)
            fprintf(mesg, "zip diagnostic: %scluding %s\n",
               z->mark ? "in" : "ex", z->name);
        m = 0;
      }
    }
    free((zvoid *)p);
    return m ? ZE_MISS : ZE_OK;
  }

  /* Live name--use if file, recurse if directory */
  for (p = n; *p; p++)          /* use / consistently */
    if (*p == '\\')
      *p = '/';
  if ((s.st_mode & S_IFDIR) == 0)
  {
    /* add or remove name of file */
    if ((m = newname(n, 0, caseflag)) != ZE_OK)
      return m;
  } else {
    /* Add trailing / to the directory name */
    if ((p = malloc(strlen(n)+2)) == NULL)
      return ZE_MEM;
    if (strcmp(n, ".") == 0 || strcmp(n, "/.") == 0) {
      *p = '\0';  /* avoid "./" prefix and do not create zip entry */
    } else {
      strcpy(p, n);
      a = p + strlen(p);
      if (a[-1] != '/')
        strcpy(a, "/");
      if (dirnames && (m = newname(p, 1, caseflag)) != ZE_OK) {
        free((zvoid *)p);
        return m;
      }
    }
    /* recurse into directory */
    if (recurse)
    {
      if ((d = malloc(sizeof(ff_dir))) == NULL ||
          (m = initDirSearch(n, d)) == ZE_MEM)
      {
        if (d != NULL)
          free((zvoid *)d);
        free((zvoid *)p);
        return ZE_MEM;
      }
      for (e = d->ff_name, ff_status = m;
           ff_status == 0;
           ff_status = FNEXT(d))
      {
        if (strcmp(e, ".") && strcmp(e, ".."))
        {
          if ((a = malloc(strlen(p) + strlen(e) + 1)) == NULL)
          {
            free((zvoid *)d);
            free((zvoid *)p);
            return ZE_MEM;
          }
          strcat(strcpy(a, p), e);
          if ((m = procname(a, caseflag)) != ZE_OK)   /* recurse on name */
          {
            if (m == ZE_MISS)
              zipwarn("name not matched: ", a);
            else
              ziperr(m, a);
          }
          free((zvoid *)a);
        }
      }
      free((zvoid *)d);
    }
    free((zvoid *)p);
  } /* (s.st_mode & S_IFDIR) == 0) */
  return ZE_OK;
}

char *ex2in(x, isdir, pdosflag)
char *x;                /* external file name */
int isdir;              /* input: x is a directory */
int *pdosflag;          /* output: force MSDOS file attributes? */
/* Convert the external file name to a zip file name, returning the malloc'ed
   string or NULL if not enough memory. */
{
  char *n;              /* internal file name (malloc'ed) */
  char *t;              /* shortened name */
  int dosflag;

  dosflag = 1;

  /* Find starting point in name before doing malloc */
  /* Strip drive specification */
  t = *x && *(x + 1) == ':' ? x + 2 : x;
  /* Strip "//host/share/" part of a UNC name */
  if ((!strncmp(x,"//",2) || !strncmp(x,"\\\\",2)) &&
      (x[2] != '\0' && x[2] != '/' && x[2] != '\\')) {
    n = x + 2;
    while (*n != '\0' && *n != '/' && *n != '\\')
      n++;              /* strip host name */
    if (*n != '\0') {
      n++;
      while (*n != '\0' && *n != '/' && *n != '\\')
        n++;            /* strip `share' name */
    }
    if (*n != '\0')
      t = n + 1;
  }
  /* Strip leading "/" to convert an absolute path into a relative path */
  while (*t == '/' || *t == '\\')
    t++;
  /* Skip leading "./" as well */
  while (*t == '.' && (t[1] == '/' || t[1] == '\\'))
    t += 2;

  /* Make changes, if any, to the copied name (leave original intact) */
  for (n = t; *n; n++)
    if (*n == '\\')
      *n = '/';

  if (!pathput)
    t = last(t, PATH_END);

  /* Malloc space for internal name and copy it */
  if ((n = malloc(strlen(t) + 1)) == NULL)
    return NULL;
  strcpy(n, t);

  if (isdir == 42) return n;      /* avoid warning on unused variable */

  if (dosify)
    msname(n);
  else
#if defined(__DJGPP__) && __DJGPP__ >= 2
    if (_USE_LFN == 0)
#endif
      strlwr(n);
  if (pdosflag)
    *pdosflag = dosflag;
  return n;
}

char *in2ex(n)
char *n;                /* internal file name */
/* Convert the zip file name to an external file name, returning the malloc'ed
   string or NULL if not enough memory. */
{
  char *x;              /* external file name */

  if ((x = malloc(strlen(n) + 1 + PAD)) == NULL)
      return NULL;
  strcpy(x, n);

  return x;
}

void stamp(f, d)
char *f;                /* name of file to change */
ulg d;                  /* dos-style time to change it to */
/* Set last updated and accessed time of file f to the DOS time d. */
{
#if defined(__TURBOC__) || defined(__GO32__)
  int h;                /* file handle */

  if ((h = open(f, 0)) != -1)
  {
    setftime(h, (struct ftime *)(void *)&d);
    close(h);
  }
#else /* !__TURBOC__ && !__GO32__ */
  ztimbuf u;            /* argument for utime() */

  /* Convert DOS time to time_t format in u.actime and u.modtime */
  u.actime = u.modtime = dos2unixtime(d);

  /* Set updated and accessed times of f */
  utime(f, &u);
#endif /* ?(__TURBOC__ || __GO32__) */
}

ulg filetime(f, a, n, t)
char *f;                /* name of file to get info on */
ulg *a;                 /* return value: file attributes */
long *n;                /* return value: file size */
iztimes *t;             /* return value: access, modific. and creation times */
/* If file *f does not exist, return 0.  Else, return the file's last
   modified date and time as an MSDOS date and time.  The date and
   time is returned in a long with the date most significant to allow
   unsigned integer comparison of absolute times.  Also, if a is not
   a NULL pointer, store the file attributes there, with the high two
   bytes being the Unix attributes, and the low byte being a mapping
   of that to DOS attributes.  If n is not NULL, store the file size
   there.  If t is not NULL, the file's access, modification and creation
   times are stored there as UNIX time_t values.
   If f is "-", use standard input as the file. If f is a device, return
   a file size of -1 */
{
  struct stat s;        /* results of stat() */
  char *name;
  unsigned int len = strlen(f);
  int isstdin = !strcmp(f, "-");

  if (f == label) {
    if (a != NULL)
      *a = label_mode;
    if (n != NULL)
      *n = -2L; /* convention for a label name */
    if (t != NULL)
      t->atime = t->mtime = t->ctime = label_utim;
    return label_time;
  }

  if ((name = malloc(len + 1)) == NULL) {
    ZIPERR(ZE_MEM, "filetime");
  }
  strcpy(name, f);
  if (name[len - 1] == '/')
    name[len - 1] = '\0';
  /* not all systems allow stat'ing a file with / appended */

  if (isstdin) {
    if (fstat(fileno(stdin), &s) != 0) {
      free(name);
      error("fstat(stdin)");
    }
    time((time_t *)&s.st_mtime);       /* some fstat()s return time zero */
  } else if (LSSTAT(name, &s) != 0) {
             /* Accept about any file kind including directories
              * (stored with trailing / with -r option)
              */
    free(name);
    return 0;
  }

  if (a != NULL) {
    *a = ((ulg)s.st_mode << 16) | (isstdin ? 0L : (ulg)GetFileMode(name));
#if (S_IFREG != 0x8000)
    /* kludge to work around non-standard S_IFREG flag used in DJGPP V2.x */
    if ((s.st_mode & S_IFMT) == S_IFREG) *a |= 0x80000000L;
#endif
  }
  if (n != NULL)
    *n = (s.st_mode & S_IFREG) != 0 ? s.st_size : -1L;
  if (t != NULL) {
    t->atime = s.st_atime;
    t->mtime = s.st_mtime;
    t->ctime = s.st_ctime;
  }

  free(name);

  return unix2dostime((time_t *)&s.st_mtime);
}

int deletedir(d)
char *d;                /* directory to delete */
/* Delete the directory *d if it is empty, do nothing otherwise.
   Return the result of rmdir(), delete(), or system().
 */
{
    return rmdir(d);
}

int set_extra_field(z, z_utim)
  struct zlist far *z;
  iztimes *z_utim;
  /* create extra field and change z->att if desired */
{
#ifdef USE_EF_UT_TIME
#ifdef IZ_CHECK_TZ
  if (!zp_tz_is_valid) return ZE_OK;    /* skip silently if no valid TZ info */
#endif

  if ((z->extra = (char *)malloc(EB_HEADSIZE+EB_UT_LEN(1))) == NULL)
    return ZE_MEM;

  z->extra[0]  = 'U';
  z->extra[1]  = 'T';
  z->extra[2]  = EB_UT_LEN(1);          /* length of data part of e.f. */
  z->extra[3]  = 0;
  z->extra[4]  = EB_UT_FL_MTIME;
  z->extra[5]  = (char)(z_utim->mtime);
  z->extra[6]  = (char)(z_utim->mtime >> 8);
  z->extra[7]  = (char)(z_utim->mtime >> 16);
  z->extra[8]  = (char)(z_utim->mtime >> 24);

  z->cext = z->ext = (EB_HEADSIZE+EB_UT_LEN(1));
  z->cextra = z->extra;

  return ZE_OK;
#else /* !USE_EF_UT_TIME */
  return (int)(z-z);
#endif /* ?USE_EF_UT_TIME */
}


#ifdef MY_ZCALLOC       /* Special zcalloc function for MEMORY16 (MSDOS/OS2) */

#if defined(__TURBOC__) && !defined(OS2)
/* Small and medium model are for now limited to near allocation with
 * reduced MAX_WBITS and MAX_MEM_LEVEL
 */

/* Turbo C malloc() does not allow dynamic allocation of 64K bytes
 * and farmalloc(64K) returns a pointer with an offset of 8, so we
 * must fix the pointer. Warning: the pointer must be put back to its
 * original form in order to free it, use zcfree().
 */

#define MAX_PTR 10
/* 10*64K = 640K */

local int next_ptr = 0;

typedef struct ptr_table_s {
    zvoid far *org_ptr;
    zvoid far *new_ptr;
} ptr_table;

local ptr_table table[MAX_PTR];
/* This table is used to remember the original form of pointers
 * to large buffers (64K). Such pointers are normalized with a zero offset.
 * Since MSDOS is not a preemptive multitasking OS, this table is not
 * protected from concurrent access. This hack doesn't work anyway on
 * a protected system like OS/2. Use Microsoft C instead.
 */

zvoid far *zcalloc (unsigned items, unsigned size)
{
    zvoid far *buf;
    ulg bsize = (ulg)items*size;

    if (bsize < (65536L-16L)) {
        buf = farmalloc(bsize);
        if (*(ush*)&buf != 0) return buf;
    } else {
        buf = farmalloc(bsize + 16L);
    }
    if (buf == NULL || next_ptr >= MAX_PTR) return NULL;
    table[next_ptr].org_ptr = buf;

    /* Normalize the pointer to seg:0 */
    *((ush*)&buf+1) += ((ush)((uch*)buf-NULL) + 15) >> 4;
    *(ush*)&buf = 0;
    table[next_ptr++].new_ptr = buf;
    return buf;
}

zvoid zcfree (zvoid far *ptr)
{
    int n;
    if (*(ush*)&ptr != 0) { /* object < 64K */
        farfree(ptr);
        return;
    }
    /* Find the original pointer */
    for (n = next_ptr - 1; n >= 0; n--) {
        if (ptr != table[n].new_ptr) continue;

        farfree(table[n].org_ptr);
        while (++n < next_ptr) {
            table[n-1] = table[n];
        }
        next_ptr--;
        return;
    }
    ziperr(ZE_MEM, "zcfree: ptr not found");
}
#endif /* __TURBOC__ */

#if defined(MSC) || defined(__WATCOMC__)
#if (!defined(_MSC_VER) || (_MSC_VER < 700))
#  define _halloc  halloc
#  define _hfree   hfree
#endif

zvoid far *zcalloc (unsigned items, unsigned size)
{
    return (zvoid far *)_halloc((long)items, size);
}

zvoid zcfree (zvoid far *ptr)
{
    _hfree((void huge *)ptr);
}
#endif /* MSC || __WATCOMC__ */

#endif /* MY_ZCALLOC */

#if (defined(__WATCOMC__) && defined(ASMV) && !defined(__386__))
/* This is a hack to connect "call _exit" in match.asm to exit() */
#pragma aux xit "_exit" parm caller []
void xit(void)
{
    exit(20);
}
#endif

#endif /* !UTIL */


#ifndef WINDLL
/******************************/
/*  Function version_local()  */
/******************************/

static ZCONST char CompiledWith[] = "Compiled with %s%s for %s%s%s.\n\n";
                        /* At module level to keep Turbo C++ 1.0 happy !! */

void version_local()
{
#if defined(__DJGPP__) || defined(__WATCOMC__) || \
    (defined(_MSC_VER) && (_MSC_VER != 800))
    char buf[80];
#endif

/* Define the compiler name and version strings */
#if defined(__GNUC__)
#  if defined(__DJGPP__)
    sprintf(buf, "djgpp v%d.%02d / gcc ", __DJGPP__, __DJGPP_MINOR__);
#    define COMPILER_NAME1      buf
#  elif defined(__GO32__)         /* __GO32__ is defined as "1" only (sigh) */
#    define COMPILER_NAME1      "djgpp v1.x / gcc "
#  elif defined(__EMX__)          /* ...so is __EMX__ (double sigh) */
#    define COMPILER_NAME1      "emx+gcc "
#  else
#    define COMPILER_NAME1      "gcc "
#  endif
#  define COMPILER_NAME2        __VERSION__
#elif defined(__WATCOMC__)
#  if (__WATCOMC__ % 10 > 0)
/* We do this silly test because __WATCOMC__ gives two digits for the  */
/* minor version, but Watcom packaging prefers to show only one digit. */
    sprintf(buf, "Watcom C/C++ %d.%02d", __WATCOMC__ / 100,
            __WATCOMC__ % 100);
#  else
    sprintf(buf, "Watcom C/C++ %d.%d", __WATCOMC__ / 100,
            (__WATCOMC__ % 100) / 10);
#  endif
#  define COMPILER_NAME1        buf
#  define COMPILER_NAME2        ""
#elif defined(__TURBOC__)
#  ifdef __BORLANDC__
#    define COMPILER_NAME1      "Borland C++"
#    if (__BORLANDC__ < 0x0200)
#      define COMPILER_NAME2    " 1.0"
#    elif (__BORLANDC__ == 0x0200)   /* James:  __TURBOC__ = 0x0297 */
#      define COMPILER_NAME2    " 2.0"
#    elif (__BORLANDC__ == 0x0400)
#      define COMPILER_NAME2    " 3.0"
#    elif (__BORLANDC__ == 0x0410)   /* __BCPLUSPLUS__ = 0x0310 */
#      define COMPILER_NAME2    " 3.1"
#    elif (__BORLANDC__ == 0x0452)   /* __BCPLUSPLUS__ = 0x0320 */
#      define COMPILER_NAME2    " 4.0 or 4.02"
#    elif (__BORLANDC__ == 0x0460)   /* __BCPLUSPLUS__ = 0x0340 */
#      define COMPILER_NAME2    " 4.5"
#    elif (__BORLANDC__ == 0x0500)   /* __TURBOC__ = 0x0500 */
#      define COMPILER_NAME2    " 5.0"
#    else
#      define COMPILER_NAME2    " later than 5.0"
#    endif
#  else
#    define COMPILER_NAME1      "Turbo C"
#    if (__TURBOC__ > 0x0401)
#      define COMPILER_NAME2    "++ later than 3.0"
#    elif (__TURBOC__ == 0x0401)     /* Kevin:  3.0 -> 0x0401 */
#      define COMPILER_NAME2    "++ 3.0"
#    elif (__TURBOC__ == 0x0296)     /* [662] checked by SPC */
#      define COMPILER_NAME2    "++ 1.01"
#    elif (__TURBOC__ == 0x0295)     /* [661] vfy'd by Kevin */
#      define COMPILER_NAME2    "++ 1.0"
#    elif (__TURBOC__ == 0x0201)     /* Brian:  2.01 -> 0x0201 */
#      define COMPILER_NAME2    " 2.01"
#    elif ((__TURBOC__ >= 0x018d) && (__TURBOC__ <= 0x0200)) /* James: 0x0200 */
#      define COMPILER_NAME2    " 2.0"
#    elif (__TURBOC__ > 0x0100)
#      define COMPILER_NAME2    " 1.5"          /* James:  0x0105? */
#    else
#      define COMPILER_NAME2    " 1.0"          /* James:  0x0100 */
#    endif
#  endif
#elif defined(MSC)
#  if defined(_QC) && !defined(_MSC_VER)
#    define COMPILER_NAME1      "Microsoft Quick C"
#    define COMPILER_NAME2      ""      /* _QC is defined as 1 */
#  else
#    define COMPILER_NAME1      "Microsoft C "
#    ifdef _MSC_VER
#      if (_MSC_VER == 800)
#        define COMPILER_NAME2  "8.0/8.0c (Visual C++ 1.0/1.5)"
#      else
#        define COMPILER_NAME2 \
           (sprintf(buf, "%d.%02d", _MSC_VER/100, _MSC_VER%100), buf)
#      endif
#    else
#      define COMPILER_NAME2    "5.1 or earlier"
#    endif
#  endif
#else
#    define COMPILER_NAME1      "unknown compiler"
#    define COMPILER_NAME2      ""
#endif

/* Define the OS name and memory environment strings */
#if defined(__WATCOMC__) || defined(__TURBOC__) || defined(MSC) || \
    defined(__GNUC__)
#  define OS_NAME1      "\nMS-DOS"
#else
#  define OS_NAME1      "MS-DOS"
#endif

#if (defined(__GNUC__) || (defined(__WATCOMC__) && defined(__386__)))
#  define OS_NAME2      " (32-bit)"
#elif defined(M_I86HM) || defined(__HUGE__)
#  define OS_NAME2      " (16-bit, huge)"
#elif defined(M_I86LM) || defined(__LARGE__)
#  define OS_NAME2      " (16-bit, large)"
#elif defined(M_I86MM) || defined(__MEDIUM__)
#  define OS_NAME2      " (16-bit, medium)"
#elif defined(M_I86CM) || defined(__COMPACT__)
#  define OS_NAME2      " (16-bit, compact)"
#elif defined(M_I86SM) || defined(__SMALL__)
#  define OS_NAME2      " (16-bit, small)"
#elif defined(M_I86TM) || defined(__TINY__)
#  define OS_NAME2      " (16-bit, tiny)"
#else
#  define OS_NAME2      " (16-bit)"
#endif

/* Define the compile date string */
#ifdef __DATE__
#  define COMPILE_DATE " on " __DATE__
#else
#  define COMPILE_DATE ""
#endif

    printf(CompiledWith, COMPILER_NAME1, COMPILER_NAME2,
           OS_NAME1, OS_NAME2, COMPILE_DATE);

} /* end function version_local() */
#endif /* !WINDLL */


#if 0 /* inserted here for future use (clearing of archive bits) */
#if (defined(__GO32__) && (!defined(__DJGPP__) || (__DJGPP__ < 2)))

#include <errno.h>
int volatile _doserrno;

unsigned _dos_setfileattr(char *name, unsigned attr)
{
#if 0   /* stripping of trailing '/' is not needed for zip-internal use */
    unsigned namlen = strlen(name);
    char *i_name = alloca(namlen + 1);

    strcpy(i_name, name);
    if (namlen > 1 && i_name[namlen-1] == '/' && i_name[namlen-2] != ':')
        i_name[namlen-1] = '\0';
    asm("movl %0, %%edx": : "g" (i_name));
#else
    asm("movl %0, %%edx": : "g" (name));
#endif
    asm("movl %0, %%ecx": : "g" (attr));
    asm("movl $0x4301, %eax");
    asm("int $0x21": : : "%eax", "%ebx", "%ecx", "%edx", "%esi", "%edi");
    _doserrno = 0;
    asm("jnc 1f");
    asm("movl %%eax, %0": "=m" (_doserrno));
    switch (_doserrno) {
    case 2:
    case 3:
           errno = ENOENT;
           break;
    case 5:
           errno = EACCES;
           break;
    }
    asm("1:");
    return (unsigned)_doserrno;
}

#endif /* DJGPP v1.x */
#endif /* never (not yet used) */


#if (defined(__DJGPP__) && (__DJGPP__ >= 2))

/* Disable determination of "x" bit in st_mode field for [f]stat() calls. */
int _is_executable (const char *path, int fhandle, const char *ext)
{
    return 0;
}

/* Prevent globbing of filenames.  This gives the same functionality as
 * "stubedit <program> globbing=no" did with DJGPP v1.
 */
#ifndef USE_DJGPP_GLOB
char **__crt0_glob_function(char *_arg)
{
    return NULL;
}
#endif

/* Reduce the size of the executable and remove the functionality to read
 * the program's environment from whatever $DJGPP points to.
 */
#if !defined(USE_DJGPP_ENV) || defined(UTIL)
void __crt0_load_environment_file(char *_app_name)
{
}
#endif

#endif /* __DJGPP__ >= 2 */


#if defined(_MSC_VER) && _MSC_VER == 700

/*
 * ARGH.  MSC 7.0 libraries think times are based on 1899 Dec 31 00:00, not
 *  1970 Jan 1 00:00.  So we have to diddle time_t's appropriately:  add
 *  70 years' worth of seconds for localtime() wrapper function;
 *  (70*365 regular days + 17 leap days + 1 1899 day) * 86400 ==
 *  (25550 + 17 + 1) * 86400 == 2209075200 seconds.
 *  Let time() and stat() return seconds since 1970 by using our own
 *  _dtoxtime() which is the routine that is called by these two functions.
 */


#ifdef UTIL
#  include <time.h>
#endif

#ifndef UTIL
#undef localtime
struct tm *localtime(const time_t *);

struct tm *msc7_localtime(const time_t *clock)
{
   time_t t = *clock;

   t += 2209075200L;
   return localtime(&t);
}
#endif /* !UTIL */


void __tzset(void);
int _isindst(struct tm *);

extern int _days[];

/* Nonzero if `y' is a leap year, else zero. */
#define leap(y) (((y) % 4 == 0 && (y) % 100 != 0) || (y) % 400 == 0)

/* Number of leap years from 1970 to `y' (not including `y' itself). */
#define nleap(y) (((y) - 1969) / 4 - ((y) - 1901) / 100 + ((y) - 1601) / 400)

time_t _dtoxtime(year, month, mday, hour, min, sec)
int year, month, mday, year, hour, min, sec;
{
   struct tm tm;
   time_t t;
   int days;

   days = _days[month - 1] + mday;
   year += 1980;
   if (leap(year) && month > 2)
     ++days;
   tm.tm_yday = days;
   tm.tm_mon = month - 1;
   tm.tm_year = year - 1900;
   tm.tm_hour = hour;
   __tzset();
   days += 365 * (year - 1970) + nleap (year);
   t = 86400L * days + 3600L * hour + 60 * min + sec + _timezone;
   if (_daylight && _isindst(&tm))
      t -= 3600;
   return t;
}

#endif /* _MSC_VER && _MSC_VER == 700 */


#ifdef __WATCOMC__

/* This papers over a bug in Watcom 10.6's standard library... sigh */
/* Apparently it applies to both the DOS and Win32 stat()s.         */

int stat_bandaid(const char *path, struct stat *buf)
{
  char newname[4];
  if (!stat(path, buf))
    return 0;
  else if (!strcmp(path, ".") || (path[0] && !strcmp(path + 1, ":."))) {
    strcpy(newname, path);
    newname[strlen(path) - 1] = '\\';   /* stat(".") fails for root! */
    return stat(newname, buf);
  } else
    return -1;
}

#endif

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