dosutils: use NCP87 DOS info fields in NDIR

Add a Client32 NCP87 helper for obtaining DOS namespace file and
subdirectory information and use it in NDIR.

The new helper reads the classic NCP87 subfunction 6 RIM_ALL DOS info
block, including timestamps, inherited rights, directory identifiers and
size metadata.

Use the NCP87 inherited rights mask for the inherited-rights column while
keeping the existing Client32 effective-rights path for the effective
rights column.  Also use the NCP87 modify, archive, last-access and
creation date fields for the /DATES display, falling back to DOS
findfirst timestamps when the NCP87 info request is not available.

Tighten the /DATES layout so the full Created/Copied timestamp remains
within an 80-column DOS screen.

c32ncp.c

@@ -314,6 +314,121 @@ int c32_ncp87_obtain_rim_attributes(const char *name,
 }
 
 
+int c32_ncp87_obtain_ndir_info(const char *path_name,
+                               uint16 dir_handle,
+                               C32_NDIR_INFO *info_out,
+                               uint16 *actual_out,
+                               uint16 *handle_lo_out,
+                               uint16 *handle_hi_out)
+{
+  uint16 handle_lo, handle_hi;
+  uint8 hdr[16];
+  uint8 path[0x140];
+  uint8 rep0[0x180];
+  uint8 rep1[0x40];
+  uint8 rawout[32];
+  uint16 raw_ret_ax, raw_ret_dx;
+  uint16 actual_lo;
+  UI path_len;
+  int rc;
+  int namelen;
+
+  if (!info_out)
+    return(1);
+
+  memset(info_out, 0, sizeof(*info_out));
+  if (actual_out) *actual_out = 0;
+  if (handle_lo_out) *handle_lo_out = 0;
+  if (handle_hi_out) *handle_hi_out = 0;
+
+  rc = c32_get_ncp_handle(&handle_lo, &handle_hi);
+  if (rc)
+    return(10 + rc);
+
+  /*
+   * NCP87 subfunction 6: Obtain File or Subdirectory Information.
+   *
+   * This asks for the classic DOS info block (RIM_ALL).  ncpfs' old
+   * nw_info_struct layout is:
+   *   +00 space allocated
+   *   +04 attributes
+   *   +20 creation time/date/id
+   *   +28 modify time/date/id
+   *   +36 last access date
+   *   +38 archive time/date/id
+   *   +46 inherited rights mask
+   *   +48 directory numbers
+   *   +76 name length/name
+   */
+  memset(hdr, 0, sizeof(hdr));
+  hdr[0] = 6;                       /* NCP87 subfunction 6 */
+  hdr[1] = 0;                       /* source namespace DOS */
+  hdr[2] = 0;                       /* target namespace DOS */
+  c32_put_word_lh(hdr + 3, 0x0006); /* SA_ALL */
+  c32_put_dword_lh(hdr + 5, 0x00000FFFUL); /* RIM_ALL */
+
+  path_len = c32_build_handle_path_from_dos_path(path, (uint8)dir_handle,
+                                                 0, 0, path_name);
+
+  memset(rep0, 0, sizeof(rep0));
+  memset(rep1, 0, sizeof(rep1));
+  memset(rawout, 0, sizeof(rawout));
+
+  C32_NCP87_Raw5_Probe(handle_lo, handle_hi,
+                       hdr, 9,
+                       path, path_len,
+                       rep0, sizeof(rep0),
+                       rep1, sizeof(rep1),
+                       rawout);
+
+  raw_ret_ax = c32_get_word_lh(rawout + 14);
+  raw_ret_dx = c32_get_word_lh(rawout + 16);
+  actual_lo  = c32_get_word_lh(rawout + 18);
+
+  if (actual_out) *actual_out = actual_lo;
+  if (handle_lo_out) *handle_lo_out = handle_lo;
+  if (handle_hi_out) *handle_hi_out = handle_hi;
+
+  if (raw_ret_ax != 0 || raw_ret_dx != 0)
+    return(20);
+
+  info_out->space_allocated   = c32_get_dword_lh(rep0 + 0);
+  info_out->attributes        = c32_get_dword_lh(rep0 + 4);
+  info_out->flags             = c32_get_word_lh(rep0 + 8);
+  info_out->data_size         = c32_get_dword_lh(rep0 + 10);
+  info_out->total_size        = c32_get_dword_lh(rep0 + 14);
+  info_out->number_of_streams = c32_get_word_lh(rep0 + 18);
+  info_out->creation_time     = c32_get_word_lh(rep0 + 20);
+  info_out->creation_date     = c32_get_word_lh(rep0 + 22);
+  info_out->creator_id        = c32_get_dword_hl(rep0 + 24);
+  info_out->modify_time       = c32_get_word_lh(rep0 + 28);
+  info_out->modify_date       = c32_get_word_lh(rep0 + 30);
+  info_out->modifier_id       = c32_get_dword_hl(rep0 + 32);
+  info_out->last_access_date  = c32_get_word_lh(rep0 + 36);
+  info_out->archive_time      = c32_get_word_lh(rep0 + 38);
+  info_out->archive_date      = c32_get_word_lh(rep0 + 40);
+  info_out->archiver_id       = c32_get_dword_hl(rep0 + 42);
+  info_out->inherited_rights  = c32_get_word_lh(rep0 + 46);
+  info_out->dir_ent_num       = c32_get_dword_lh(rep0 + 48);
+  info_out->dos_dir_num       = c32_get_dword_lh(rep0 + 52);
+  info_out->vol_number        = c32_get_dword_lh(rep0 + 56);
+  info_out->ea_data_size      = c32_get_dword_lh(rep0 + 60);
+  info_out->ea_key_count      = c32_get_dword_lh(rep0 + 64);
+  info_out->ea_key_size       = c32_get_dword_lh(rep0 + 68);
+  info_out->ns_creator        = c32_get_dword_lh(rep0 + 72);
+
+  namelen = rep0[76];
+  if (namelen > 255)
+    namelen = 255;
+  info_out->name_len = (uint8)namelen;
+  memcpy(info_out->name, rep0 + 77, namelen);
+  info_out->name[namelen] = '\0';
+
+  return(0);
+}
+
+
+
 int c32_ncp87_modify_dos_attributes(char *name,
                                     uint16 dir_handle,
                                     uint32 attrs,