text: /*
    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    /* the companion #endif is a bit of ways down ... */
  
  #include <time.h>
  #if defined(__IBMC__) || defined(MSC)
  #include <direct.h>
  #endif
  
  /* Extra malloc() space in names for cutpath() */
  #define PAD 0
  #define PATH_END '/'
  
  
  #include "os2zip.h"
  
  /* Library functions not in (most) header files */
  
  extern char *label;
  local ulg label_time = 0;
  local ulg label_mode = 0;
  local time_t label_utim = 0;
  
  /* Local functions */
  local char *readd OF((DIR *));
  
  
  local char *readd(d)
  DIR *d;                 /* directory stream to read from */
  /* Return a pointer to the next name in the directory stream d, or NULL if
     no more entries or an error occurs. */
  {
    struct dirent *e;
  
    e = readdir(d);
    return e == NULL ? (char *) NULL : e->d_name;
  }
  
  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. */
  {
    DIR *d;               /* stream for reading directory */
    char *e;              /* name found in directory */
    int r;                /* temporary variable */
    char *n;              /* constructed name from directory */
    int f;                /* true if there was a match */
    char *a;              /* alloc'ed space for name */
    char *p;              /* path */
    char *q;              /* name */
    char v[5];            /* space for device current directory */
  
    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) {
         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 */
    }
  
    if (w == NULL)
      return ZE_OK;
  
    /* special handling of stdin request */
    if (strcmp(w, "-") == 0)   /* if compressing stdin */
      return newname(w, 0, 0);
  
    /* Allocate and copy pattern */
    if ((p = a = malloc(strlen(w) + 1)) == NULL)
      return ZE_MEM;
    strcpy(p, w);
  
    /* catch special case: treat "*.*" as "*" for DOS-impaired people */
    r = strlen(p);
    if (strcmp(p + r - 3, "*.*") == 0)
      p[r - 2] = '\0';
  
    /* Normalize path delimiter as '/'. */
    for (q = p; *q; q++)                  /* use / consistently */
      if (*q == '\\')
        *q = '/';
  
    /* Only name can have special matching characters */
    if ((q = isshexp(p)) != NULL &&
        (strrchr(q, '/') != NULL || strrchr(q, ':') != NULL))
    {
      free((zvoid *)a);
      return ZE_PARMS;
    }
  
    /* Separate path and name into p and q */
    if ((q = strrchr(p, '/')) != NULL && (q == p || q[-1] != ':'))
    {
      *q++ = '\0';                        /* path/name -> path, name */
      if (*p == '\0')                     /* path is just / */
        p = strcpy(v, "/.");
    }
    else if ((q = strrchr(p, ':')) != NULL)
    {                                     /* has device and no or root path */
      *q++ = '\0';
      p = strcat(strcpy(v, p), ":");      /* copy device as path */
      if (*q == '/')                      /* -> device:/., name */
      {
        strcat(p, "/");
        q++;
      }
      strcat(p, ".");
    }
    else if (recurse && (strcmp(p, ".") == 0 ||  strcmp(p, "..") == 0))
    {                                    /* current or parent directory */
      /* I can't understand Mark's code so I am adding a hack here to get
       * "zip -r foo ." to work. Allow the dubious "zip -r foo .." but
       * reject "zip -rm foo ..".
       */
      if (dispose && strcmp(p, "..") == 0)
         ziperr(ZE_PARMS, "cannot remove parent directory");
      q = "*";
    }
    else                                  /* no path or device */
    {
      q = p;
      p = strcpy(v, ".");
    }
    if (recurse && *q == '\0') {
      q = "*";
    }
    /* Search that level for matching names */
    if ((d = opendir(p)) == NULL)
    {
      free((zvoid *)a);
      return ZE_MISS;
    }
    if ((r = strlen(p)) > 1 &&
        (strcmp(p + r - 2, ":.") == 0 || strcmp(p + r - 2, "/.") == 0))
      *(p + r - 1) = '\0';
    f = 0;
    while ((e = readd(d)) != NULL) {
      if (strcmp(e, ".") && strcmp(e, "..") && MATCH(q, e, 0))
      {
        f = 1;
        if (strcmp(p, ".") == 0) {                /* path is . */
          r = procname(e, 0);                     /* name is name */
          if (r) {
             f = 0;
             break;
          }
        } else
        {
          if ((n = malloc(strlen(p) + strlen(e) + 2)) == NULL)
          {
            free((zvoid *)a);
            closedir(d);
            return ZE_MEM;
          }
          n = strcpy(n, p);
          if (n[r = strlen(n) - 1] != '/' && n[r] != ':')
            strcat(n, "/");
          r = procname(strcat(n, e), 0);          /* name is path/name */
          free((zvoid *)n);
          if (r) {
            f = 0;
            break;
          }
        }
      }
    }
    closedir(d);
  
    /* Done */
    free((zvoid *)a);
    return f ? ZE_OK : ZE_MISS;
  }
  
  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 */
    DIR *d;               /* directory stream from opendir() */
    char *e;              /* pointer to name from readd() */
    int m;                /* matched flag */
    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 (LSSTAT(n, &s)
  #if defined(__TURBOC__) || defined(__WATCOMC__)
             /* For these 2 compilers, stat() succeeds on wild card names! */
             || isshexp(n)
  #endif
            )
    {
      /* Not a file or directory--search for shell expression in zip file */
      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 (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 && (d = opendir(n)) != NULL)
      {
        while ((e = readd(d)) != NULL) {
          if (strcmp(e, ".") && strcmp(e, ".."))
          {
            if ((a = malloc(strlen(p) + strlen(e) + 1)) == NULL)
            {
              closedir(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);
          }
        }
        closedir(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 = dosify || IsFileSystemFAT(x) || (x == label);
    if (!dosify && use_longname_ea && (t = GetLongPathEA(x)) != NULL)
    {
      x = t;
      dosflag = 0;
    }
  
    /* 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++;
    /* Strip leading "./" as well as drive letter */
    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 (dosify)
      msname(n);
  
    /* Returned malloc'ed name */
    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. */
  {
    SetFileTime(f, d);
  }
  
  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;
    ulg r;
    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) {
      /* it is common for some PC based compilers to
         fail with fstat() on devices or pipes */
      if (fstat(fileno(stdin), &s) != 0) {
        s.st_mode = S_IFREG; s.st_size = -1L;
      }
      time(&s.st_ctime);
      s.st_atime = s.st_mtime = s.st_ctime;
    } 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 (n != NULL)
      *n = (s.st_mode & S_IFMT) == S_IFREG ? s.st_size : -1L;
  #ifdef __WATCOMC__
    /* of course, Watcom always has to make an exception */
    if (s.st_atime == 312764400)
      s.st_atime = s.st_mtime;
    if (s.st_ctime == 312764400)
      s.st_ctime = s.st_mtime;
  #endif
    if (t != NULL) {
      t->atime = s.st_atime;
      t->mtime = s.st_mtime;
      t->ctime = s.st_ctime;
    }
  
    r = GetFileTime(name);
    free(name);
  
    return r;
  }
  
  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);
  }
  
  
  #if defined MY_ZCALLOC /* Special zcalloc function for MEMORY16 (MSDOS/OS2) */
  
  #ifdef MSC  /* Microsoft C */
  
  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 */
  
  #endif /* MY_ZCALLOC */
  
  #endif /* !UTIL */
  