release/src/router/libncurses/ncurses/tinfo/write_entry.c

   1 /****************************************************************************
   2  * Copyright (c) 1998-2013,2014 Free Software Foundation, Inc.              *
   3  *                                                                          *
   4  * Permission is hereby granted, free of charge, to any person obtaining a  *
   5  * copy of this software and associated documentation files (the            *
   6  * "Software"), to deal in the Software without restriction, including      *
   7  * without limitation the rights to use, copy, modify, merge, publish,      *
   8  * distribute, distribute with modifications, sublicense, and/or sell       *
   9  * copies of the Software, and to permit persons to whom the Software is    *
  10  * furnished to do so, subject to the following conditions:                 *
  11  *                                                                          *
  12  * The above copyright notice and this permission notice shall be included  *
  13  * in all copies or substantial portions of the Software.                   *
  14  *                                                                          *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
  16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
  18  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
  21  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
  22  *                                                                          *
  23  * Except as contained in this notice, the name(s) of the above copyright   *
  24  * holders shall not be used in advertising or otherwise to promote the     *
  25  * sale, use or other dealings in this Software without prior written       *
  26  * authorization.                                                           *
  27  ****************************************************************************/
  28
  29 /****************************************************************************
  30  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
  31  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
  32  *     and: Thomas E. Dickey                        1996-on                 *
  33  ****************************************************************************/
  34
  35 /*
  36  *      write_entry.c -- write a terminfo structure onto the file system
  37  */
  38
  39 #include <curses.priv.h>
  40 #include <hashed_db.h>
  41
  42 #include <tic.h>
  43
  44 #if 1
  45 #define TRACE_OUT(p) DEBUG(2, p)
  46 #else
  47 #define TRACE_OUT(p)            /*nothing */
  48 #endif
  49
  50 MODULE_ID("$Id: write_entry.c,v 1.92 2014/11/01 14:47:00 tom Exp $")
  51
  52 static int total_written;
  53
  54 static int make_db_root(const char *);
  55 static int write_object(TERMTYPE *, char *, unsigned *, unsigned);
  56
  57 #if !USE_HASHED_DB
  58 static void
  59 write_file(char *filename, TERMTYPE *tp)
  60 {
  61     char buffer[MAX_ENTRY_SIZE];
  62     unsigned limit = sizeof(buffer);
  63     unsigned offset = 0;
  64
  65     FILE *fp = (_nc_access(filename, W_OK) == 0) ? fopen(filename, "wb") : 0;
  66     if (fp == 0) {
  67         perror(filename);
  68         _nc_syserr_abort("can't open %s/%s", _nc_tic_dir(0), filename);
  69     }
  70     DEBUG(1, ("Created %s", filename));
  71
  72     if (write_object(tp, buffer, &offset, limit) == ERR
  73         || fwrite(buffer, sizeof(char), (size_t) offset, fp) != offset) {
  74         _nc_syserr_abort("error writing %s/%s", _nc_tic_dir(0), filename);
  75     }
  76
  77     fclose(fp);
  78 }
  79
  80 /*
  81  * Check for access rights to destination directories
  82  * Create any directories which don't exist.
  83  *
  84  * Note:  there's no reason to return the result of make_db_root(), since
  85  * this function is called only in instances where that has to succeed.
  86  */
  87 static void
  88 check_writeable(int code)
  89 {
  90     static const char dirnames[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
  91     static bool verified[sizeof(dirnames)];
  92
  93     char dir[sizeof(LEAF_FMT)];
  94     char *s = 0;
  95
  96     if (code == 0 || (s = (strchr) (dirnames, code)) == 0)
  97         _nc_err_abort("Illegal terminfo subdirectory \"" LEAF_FMT "\"", code);
  98
  99     if (verified[s - dirnames])
 100         return;
 101
 102     _nc_SPRINTF(dir, _nc_SLIMIT(sizeof(dir)) LEAF_FMT, code);
 103     if (make_db_root(dir) < 0) {
 104         _nc_err_abort("%s/%s: permission denied", _nc_tic_dir(0), dir);
 105     }
 106
 107     verified[s - dirnames] = TRUE;
 108 }
 109 #endif /* !USE_HASHED_DB */
 110
 111 static int
 112 make_db_path(char *dst, const char *src, size_t limit)
 113 {
 114     int rc = -1;
 115     const char *top = _nc_tic_dir(0);
 116
 117     if (src == top || _nc_is_abs_path(src)) {
 118         if (strlen(src) + 1 <= limit) {
 119             _nc_STRCPY(dst, src, limit);
 120             rc = 0;
 121         }
 122     } else {
 123         if (strlen(top) + strlen(src) + 2 <= limit) {
 124             _nc_SPRINTF(dst, _nc_SLIMIT(limit) "%s/%s", top, src);
 125             rc = 0;
 126         }
 127     }
 128 #if USE_HASHED_DB
 129     if (rc == 0) {
 130         static const char suffix[] = DBM_SUFFIX;
 131         size_t have = strlen(dst);
 132         size_t need = strlen(suffix);
 133         if (have > need && strcmp(dst + (int) (have - need), suffix)) {
 134             if (have + need <= limit) {
 135                 _nc_STRCAT(dst, suffix, limit);
 136             } else {
 137                 rc = -1;
 138             }
 139         } else if (_nc_is_dir_path(dst)) {
 140             rc = -1;
 141         }
 142     }
 143 #endif
 144     return rc;
 145 }
 146
 147 /*
 148  * Make a database-root if it doesn't exist.
 149  */
 150 static int
 151 make_db_root(const char *path)
 152 {
 153     int rc;
 154     char fullpath[PATH_MAX];
 155
 156     if ((rc = make_db_path(fullpath, path, sizeof(fullpath))) == 0) {
 157 #if USE_HASHED_DB
 158         DB *capdbp;
 159
 160         if ((capdbp = _nc_db_open(fullpath, TRUE)) == NULL) {
 161             rc = -1;
 162         } else if (_nc_db_close(capdbp) < 0) {
 163             rc = -1;
 164         }
 165 #else
 166         struct stat statbuf;
 167
 168         if ((rc = stat(path, &statbuf)) < 0) {
 169             rc = mkdir(path
 170 #if !defined(__MINGW32__)
 171                        ,0777
 172 #endif
 173                 );
 174         } else if (_nc_access(path, R_OK | W_OK | X_OK) < 0) {
 175             rc = -1;            /* permission denied */
 176         } else if (!(S_ISDIR(statbuf.st_mode))) {
 177             rc = -1;            /* not a directory */
 178         }
 179 #endif
 180     }
 181     return rc;
 182 }
 183
 184 /*
 185  * Set the write directory for compiled entries.
 186  */
 187 NCURSES_EXPORT(void)
 188 _nc_set_writedir(const char *dir)
 189 {
 190     const char *destination;
 191     char actual[PATH_MAX];
 192
 193     if (dir == 0
 194 #ifndef USE_ROOT_ENVIRON
 195         && use_terminfo_vars()
 196 #endif
 197         )
 198         dir = getenv("TERMINFO");
 199
 200     if (dir != 0)
 201         (void) _nc_tic_dir(dir);
 202
 203     destination = _nc_tic_dir(0);
 204     if (make_db_root(destination) < 0) {
 205         char *home = _nc_home_terminfo();
 206
 207         if (home != 0) {
 208             destination = home;
 209             if (make_db_root(destination) < 0)
 210                 _nc_err_abort("%s: permission denied (errno %d)",
 211                               destination, errno);
 212         }
 213     }
 214
 215     /*
 216      * Note: because of this code, this logic should be exercised
 217      * *once only* per run.
 218      */
 219 #if USE_HASHED_DB
 220     make_db_path(actual, destination, sizeof(actual));
 221 #else
 222     if (chdir(_nc_tic_dir(destination)) < 0
 223         || getcwd(actual, sizeof(actual)) == 0)
 224         _nc_err_abort("%s: not a directory", destination);
 225 #endif
 226     _nc_keep_tic_dir(strdup(actual));
 227 }
 228
 229 /*
 230  *      Save the compiled version of a description in the filesystem.
 231  *
 232  *      make a copy of the name-list
 233  *      break it up into first-name and all-but-last-name
 234  *      creat(first-name)
 235  *      write object information to first-name
 236  *      close(first-name)
 237  *      for each name in all-but-last-name
 238  *          link to first-name
 239  *
 240  *      Using 'time()' to obtain a reference for file timestamps is unreliable,
 241  *      e.g., with NFS, because the filesystem may have a different time
 242  *      reference.  We check for pre-existence of links by latching the first
 243  *      timestamp from a file that we create.
 244  *
 245  *      The _nc_warning() calls will report a correct line number only if
 246  *      _nc_curr_line is properly set before the write_entry() call.
 247  */
 248
 249 NCURSES_EXPORT(void)
 250 _nc_write_entry(TERMTYPE *const tp)
 251 {
 252 #if USE_HASHED_DB
 253
 254     char buffer[MAX_ENTRY_SIZE + 1];
 255     unsigned limit = sizeof(buffer);
 256     unsigned offset = 0;
 257
 258 #else /* !USE_HASHED_DB */
 259
 260     struct stat statbuf;
 261     char filename[PATH_MAX];
 262     char linkname[PATH_MAX];
 263 #if USE_SYMLINKS
 264     char symlinkname[PATH_MAX];
 265 #if !HAVE_LINK
 266 #undef HAVE_LINK
 267 #define HAVE_LINK 1
 268 #endif
 269 #endif /* USE_SYMLINKS */
 270
 271     static int call_count;
 272     static time_t start_time;   /* time at start of writes */
 273
 274 #endif /* USE_HASHED_DB */
 275
 276     char name_list[MAX_TERMINFO_LENGTH];
 277     char *first_name, *other_names;
 278     char *ptr;
 279     char *term_names = tp->term_names;
 280     size_t name_size = strlen(term_names);
 281
 282     if (name_size == 0) {
 283         _nc_syserr_abort("no terminal name found.");
 284     } else if (name_size >= sizeof(name_list) - 1) {
 285         _nc_syserr_abort("terminal name too long: %s", term_names);
 286     }
 287
 288     _nc_STRCPY(name_list, term_names, sizeof(name_list));
 289     DEBUG(7, ("Name list = '%s'", name_list));
 290
 291     first_name = name_list;
 292
 293     ptr = &name_list[name_size - 1];
 294     other_names = ptr + 1;
 295
 296     while (ptr > name_list && *ptr != '|')
 297         ptr--;
 298
 299     if (ptr != name_list) {
 300         *ptr = '\0';
 301
 302         for (ptr = name_list; *ptr != '\0' && *ptr != '|'; ptr++)
 303             continue;
 304
 305         if (*ptr == '\0')
 306             other_names = ptr;
 307         else {
 308             *ptr = '\0';
 309             other_names = ptr + 1;
 310         }
 311     }
 312
 313     DEBUG(7, ("First name = '%s'", first_name));
 314     DEBUG(7, ("Other names = '%s'", other_names));
 315
 316     _nc_set_type(first_name);
 317
 318 #if USE_HASHED_DB
 319     if (write_object(tp, buffer + 1, &offset, limit - 1) != ERR) {
 320         DB *capdb = _nc_db_open(_nc_tic_dir(0), TRUE);
 321         DBT key, data;
 322
 323         if (capdb != 0) {
 324             buffer[0] = 0;
 325
 326             memset(&key, 0, sizeof(key));
 327             key.data = term_names;
 328             key.size = name_size;
 329
 330             memset(&data, 0, sizeof(data));
 331             data.data = buffer;
 332             data.size = offset + 1;
 333
 334             _nc_db_put(capdb, &key, &data);
 335
 336             buffer[0] = 2;
 337
 338             key.data = name_list;
 339             key.size = strlen(name_list);
 340
 341             _nc_STRCPY(buffer + 1,
 342                        term_names,
 343                        sizeof(buffer) - 1);
 344             data.size = name_size + 1;
 345
 346             _nc_db_put(capdb, &key, &data);
 347
 348             while (*other_names != '\0') {
 349                 ptr = other_names++;
 350                 assert(ptr < buffer + sizeof(buffer) - 1);
 351                 while (*other_names != '|' && *other_names != '\0')
 352                     other_names++;
 353
 354                 if (*other_names != '\0')
 355                     *(other_names++) = '\0';
 356
 357                 key.data = ptr;
 358                 key.size = strlen(ptr);
 359
 360                 _nc_db_put(capdb, &key, &data);
 361             }
 362         }
 363     }
 364 #else /* !USE_HASHED_DB */
 365     if (call_count++ == 0) {
 366         start_time = 0;
 367     }
 368
 369     if (strlen(first_name) >= sizeof(filename) - (2 + LEAF_LEN))
 370         _nc_warning("terminal name too long.");
 371
 372     _nc_SPRINTF(filename, _nc_SLIMIT(sizeof(filename))
 373                 LEAF_FMT "/%s", first_name[0], first_name);
 374
 375     /*
 376      * Has this primary name been written since the first call to
 377      * write_entry()?  If so, the newer write will step on the older,
 378      * so warn the user.
 379      */
 380     if (start_time > 0 &&
 381         stat(filename, &statbuf) >= 0
 382         && statbuf.st_mtime >= start_time) {
 383 #if HAVE_LINK && !USE_SYMLINKS
 384         /*
 385          * If the file has more than one link, the reason for the previous
 386          * write could be that the current primary name used to be an alias for
 387          * the previous entry.  In that case, unlink the file so that we will
 388          * not modify the previous entry as we write this one.
 389          */
 390         if (statbuf.st_nlink > 1) {
 391             _nc_warning("name redefined.");
 392             unlink(filename);
 393         } else {
 394             _nc_warning("name multiply defined.");
 395         }
 396 #else
 397         _nc_warning("name multiply defined.");
 398 #endif
 399     }
 400
 401     check_writeable(first_name[0]);
 402     write_file(filename, tp);
 403
 404     if (start_time == 0) {
 405         if (stat(filename, &statbuf) < 0
 406             || (start_time = statbuf.st_mtime) == 0) {
 407             _nc_syserr_abort("error obtaining time from %s/%s",
 408                              _nc_tic_dir(0), filename);
 409         }
 410     }
 411     while (*other_names != '\0') {
 412         ptr = other_names++;
 413         while (*other_names != '|' && *other_names != '\0')
 414             other_names++;
 415
 416         if (*other_names != '\0')
 417             *(other_names++) = '\0';
 418
 419         if (strlen(ptr) > sizeof(linkname) - (2 + LEAF_LEN)) {
 420             _nc_warning("terminal alias %s too long.", ptr);
 421             continue;
 422         }
 423         if (strchr(ptr, '/') != 0) {
 424             _nc_warning("cannot link alias %s.", ptr);
 425             continue;
 426         }
 427
 428         check_writeable(ptr[0]);
 429         _nc_SPRINTF(linkname, _nc_SLIMIT(sizeof(linkname))
 430                     LEAF_FMT "/%s", ptr[0], ptr);
 431
 432         if (strcmp(filename, linkname) == 0) {
 433             _nc_warning("self-synonym ignored");
 434         } else if (stat(linkname, &statbuf) >= 0 &&
 435                    statbuf.st_mtime < start_time) {
 436             _nc_warning("alias %s multiply defined.", ptr);
 437         } else if (_nc_access(linkname, W_OK) == 0)
 438 #if HAVE_LINK
 439         {
 440             int code;
 441 #if USE_SYMLINKS
 442             if (first_name[0] == linkname[0])
 443                 strncpy(symlinkname, first_name, sizeof(symlinkname) - 1);
 444             else {
 445                 _nc_STRCPY(symlinkname, "../", sizeof(suymlinkname));
 446                 strncat(symlinkname, filename, sizeof(symlinkname) - 4);
 447             }
 448             symlinkname[sizeof(symlinkname) - 1] = '\0';
 449 #endif /* USE_SYMLINKS */
 450 #if HAVE_REMOVE
 451             code = remove(linkname);
 452 #else
 453             code = unlink(linkname);
 454 #endif
 455             if (code != 0 && errno == ENOENT)
 456                 code = 0;
 457 #if USE_SYMLINKS
 458             if (symlink(symlinkname, linkname) < 0)
 459 #else
 460             if (link(filename, linkname) < 0)
 461 #endif /* USE_SYMLINKS */
 462             {
 463                 /*
 464                  * If there wasn't anything there, and we cannot
 465                  * link to the target because it is the same as the
 466                  * target, then the source must be on a filesystem
 467                  * that uses caseless filenames, such as Win32, etc.
 468                  */
 469                 if (code == 0 && errno == EEXIST)
 470                     _nc_warning("can't link %s to %s", filename, linkname);
 471                 else if (code == 0 && (errno == EPERM || errno == ENOENT))
 472                     write_file(linkname, tp);
 473                 else {
 474 #if MIXEDCASE_FILENAMES
 475                     _nc_syserr_abort("can't link %s to %s", filename, linkname);
 476 #else
 477                     _nc_warning("can't link %s to %s (errno=%d)", filename,
 478                                 linkname, errno);
 479 #endif
 480                 }
 481             } else {
 482                 DEBUG(1, ("Linked %s", linkname));
 483             }
 484         }
 485 #else /* just make copies */
 486             write_file(linkname, tp);
 487 #endif /* HAVE_LINK */
 488     }
 489 #endif /* USE_HASHED_DB */
 490 }
 491
 492 static size_t
 493 fake_write(char *dst,
 494            unsigned *offset,
 495            size_t limit,
 496            char *src,
 497            size_t want,
 498            size_t size)
 499 {
 500     size_t have = (limit - *offset);
 501
 502     want *= size;
 503     if (have > 0) {
 504         if (want > have)
 505             want = have;
 506         memcpy(dst + *offset, src, want);
 507         *offset += (unsigned) want;
 508     } else {
 509         want = 0;
 510     }
 511     return (want / size);
 512 }
 513
 514 #define Write(buf, size, count) fake_write(buffer, offset, (size_t) limit, (char *) buf, (size_t) count, (size_t) size)
 515
 516 #undef LITTLE_ENDIAN            /* BSD/OS defines this as a feature macro */
 517 #define HI(x)                   ((x) / 256)
 518 #define LO(x)                   ((x) % 256)
 519 #define LITTLE_ENDIAN(p, x)     (p)[0] = (unsigned char)LO(x),  \
 520                                 (p)[1] = (unsigned char)HI(x)
 521
 522 #define WRITE_STRING(str) (Write(str, sizeof(char), strlen(str) + 1) == strlen(str) + 1)
 523
 524 static int
 525 compute_offsets(char **Strings, size_t strmax, short *offsets)
 526 {
 527     int nextfree = 0;
 528     size_t i;
 529
 530     for (i = 0; i < strmax; i++) {
 531         if (Strings[i] == ABSENT_STRING) {
 532             offsets[i] = -1;
 533         } else if (Strings[i] == CANCELLED_STRING) {
 534             offsets[i] = -2;
 535         } else {
 536             offsets[i] = (short) nextfree;
 537             nextfree += (int) strlen(Strings[i]) + 1;
 538             TRACE_OUT(("put Strings[%d]=%s(%d)", (int) i,
 539                        _nc_visbuf(Strings[i]), (int) nextfree));
 540         }
 541     }
 542     return nextfree;
 543 }
 544
 545 static void
 546 convert_shorts(unsigned char *buf, short *Numbers, size_t count)
 547 {
 548     size_t i;
 549     for (i = 0; i < count; i++) {
 550         if (Numbers[i] == ABSENT_NUMERIC) {     /* HI/LO won't work */
 551             buf[2 * i] = buf[2 * i + 1] = 0377;
 552         } else if (Numbers[i] == CANCELLED_NUMERIC) {   /* HI/LO won't work */
 553             buf[2 * i] = 0376;
 554             buf[2 * i + 1] = 0377;
 555         } else {
 556             LITTLE_ENDIAN(buf + 2 * i, Numbers[i]);
 557             TRACE_OUT(("put Numbers[%u]=%d", (unsigned) i, Numbers[i]));
 558         }
 559     }
 560 }
 561
 562 #define even_boundary(value) \
 563             ((value) % 2 != 0 && Write(&zero, sizeof(char), 1) != 1)
 564
 565 #if NCURSES_XNAMES
 566 static unsigned
 567 extended_Booleans(TERMTYPE *tp)
 568 {
 569     unsigned result = 0;
 570     unsigned i;
 571
 572     for (i = 0; i < tp->ext_Booleans; ++i) {
 573         if (tp->Booleans[BOOLCOUNT + i] == TRUE)
 574             result = (i + 1);
 575     }
 576     return result;
 577 }
 578
 579 static unsigned
 580 extended_Numbers(TERMTYPE *tp)
 581 {
 582     unsigned result = 0;
 583     unsigned i;
 584
 585     for (i = 0; i < tp->ext_Numbers; ++i) {
 586         if (tp->Numbers[NUMCOUNT + i] != ABSENT_NUMERIC)
 587             result = (i + 1);
 588     }
 589     return result;
 590 }
 591
 592 static unsigned
 593 extended_Strings(TERMTYPE *tp)
 594 {
 595     unsigned short result = 0;
 596     unsigned short i;
 597
 598     for (i = 0; i < tp->ext_Strings; ++i) {
 599         if (tp->Strings[STRCOUNT + i] != ABSENT_STRING)
 600             result = (unsigned short) (i + 1);
 601     }
 602     return result;
 603 }
 604
 605 /*
 606  * _nc_align_termtype() will extend entries that are referenced in a use=
 607  * clause - discard the unneeded data.
 608  */
 609 static bool
 610 extended_object(TERMTYPE *tp)
 611 {
 612     bool result = FALSE;
 613
 614     if (_nc_user_definable) {
 615         result = ((extended_Booleans(tp)
 616                    + extended_Numbers(tp)
 617                    + extended_Strings(tp)) != 0);
 618     }
 619     return result;
 620 }
 621 #endif
 622
 623 static int
 624 write_object(TERMTYPE *tp, char *buffer, unsigned *offset, unsigned limit)
 625 {
 626     char *namelist;
 627     size_t namelen, boolmax, nummax, strmax;
 628     char zero = '\0';
 629     size_t i;
 630     int nextfree;
 631     short offsets[MAX_ENTRY_SIZE / 2];
 632     unsigned char buf[MAX_ENTRY_SIZE];
 633     unsigned last_bool = BOOLWRITE;
 634     unsigned last_num = NUMWRITE;
 635     unsigned last_str = STRWRITE;
 636
 637 #if NCURSES_XNAMES
 638     /*
 639      * Normally we limit the list of values to exclude the "obsolete"
 640      * capabilities.  However, if we are accepting extended names, add
 641      * these as well, since they are used for supporting translation
 642      * to/from termcap.
 643      */
 644     if (_nc_user_definable) {
 645         last_bool = BOOLCOUNT;
 646         last_num = NUMCOUNT;
 647         last_str = STRCOUNT;
 648     }
 649 #endif
 650
 651     namelist = tp->term_names;
 652     namelen = strlen(namelist) + 1;
 653
 654     boolmax = 0;
 655     for (i = 0; i < last_bool; i++) {
 656         if (tp->Booleans[i] == TRUE)
 657             boolmax = i + 1;
 658     }
 659
 660     nummax = 0;
 661     for (i = 0; i < last_num; i++) {
 662         if (tp->Numbers[i] != ABSENT_NUMERIC)
 663             nummax = i + 1;
 664     }
 665
 666     strmax = 0;
 667     for (i = 0; i < last_str; i++) {
 668         if (tp->Strings[i] != ABSENT_STRING)
 669             strmax = i + 1;
 670     }
 671
 672     nextfree = compute_offsets(tp->Strings, strmax, offsets);
 673
 674     /* fill in the header */
 675     LITTLE_ENDIAN(buf, MAGIC);
 676     LITTLE_ENDIAN(buf + 2, min(namelen, MAX_NAME_SIZE + 1));
 677     LITTLE_ENDIAN(buf + 4, boolmax);
 678     LITTLE_ENDIAN(buf + 6, nummax);
 679     LITTLE_ENDIAN(buf + 8, strmax);
 680     LITTLE_ENDIAN(buf + 10, nextfree);
 681
 682     /* write out the header */
 683     TRACE_OUT(("Header of %s @%d", namelist, *offset));
 684     if (Write(buf, 12, 1) != 1
 685         || Write(namelist, sizeof(char), namelen) != namelen)
 686           return (ERR);
 687
 688     for (i = 0; i < boolmax; i++)
 689         if (tp->Booleans[i] == TRUE)
 690             buf[i] = TRUE;
 691         else
 692             buf[i] = FALSE;
 693     if (Write(buf, sizeof(char), boolmax) != boolmax)
 694           return (ERR);
 695
 696     if (even_boundary(namelen + boolmax))
 697         return (ERR);
 698
 699     TRACE_OUT(("Numerics begin at %04x", *offset));
 700
 701     /* the numerics */
 702     convert_shorts(buf, tp->Numbers, nummax);
 703     if (Write(buf, 2, nummax) != nummax)
 704         return (ERR);
 705
 706     TRACE_OUT(("String offsets begin at %04x", *offset));
 707
 708     /* the string offsets */
 709     convert_shorts(buf, offsets, strmax);
 710     if (Write(buf, 2, strmax) != strmax)
 711         return (ERR);
 712
 713     TRACE_OUT(("String table begins at %04x", *offset));
 714
 715     /* the strings */
 716     for (i = 0; i < strmax; i++)
 717         if (VALID_STRING(tp->Strings[i]))
 718             if (!WRITE_STRING(tp->Strings[i]))
 719                 return (ERR);
 720
 721 #if NCURSES_XNAMES
 722     if (extended_object(tp)) {
 723         unsigned extcnt = (unsigned) NUM_EXT_NAMES(tp);
 724
 725         if (even_boundary(nextfree))
 726             return (ERR);
 727
 728         nextfree = compute_offsets(tp->Strings + STRCOUNT,
 729                                    (size_t) tp->ext_Strings,
 730                                    offsets);
 731         TRACE_OUT(("after extended string capabilities, nextfree=%d", nextfree));
 732
 733         if (tp->ext_Strings >= SIZEOF(offsets))
 734             return (ERR);
 735
 736         nextfree += compute_offsets(tp->ext_Names,
 737                                     (size_t) extcnt,
 738                                     offsets + tp->ext_Strings);
 739         TRACE_OUT(("after extended capnames, nextfree=%d", nextfree));
 740         strmax = tp->ext_Strings + extcnt;
 741
 742         /*
 743          * Write the extended header
 744          */
 745         LITTLE_ENDIAN(buf + 0, tp->ext_Booleans);
 746         LITTLE_ENDIAN(buf + 2, tp->ext_Numbers);
 747         LITTLE_ENDIAN(buf + 4, tp->ext_Strings);
 748         LITTLE_ENDIAN(buf + 6, strmax);
 749         LITTLE_ENDIAN(buf + 8, nextfree);
 750         TRACE_OUT(("WRITE extended-header @%d", *offset));
 751         if (Write(buf, 10, 1) != 1)
 752             return (ERR);
 753
 754         TRACE_OUT(("WRITE %d booleans @%d", tp->ext_Booleans, *offset));
 755         if (tp->ext_Booleans
 756             && Write(tp->Booleans + BOOLCOUNT, sizeof(char),
 757                      tp->ext_Booleans) != tp->ext_Booleans)
 758               return (ERR);
 759
 760         if (even_boundary(tp->ext_Booleans))
 761             return (ERR);
 762
 763         TRACE_OUT(("WRITE %d numbers @%d", tp->ext_Numbers, *offset));
 764         if (tp->ext_Numbers) {
 765             convert_shorts(buf, tp->Numbers + NUMCOUNT, (size_t) tp->ext_Numbers);
 766             if (Write(buf, 2, tp->ext_Numbers) != tp->ext_Numbers)
 767                 return (ERR);
 768         }
 769
 770         /*
 771          * Convert the offsets for the ext_Strings and ext_Names tables,
 772          * in that order.
 773          */
 774         convert_shorts(buf, offsets, strmax);
 775         TRACE_OUT(("WRITE offsets @%d", *offset));
 776         if (Write(buf, 2, strmax) != strmax)
 777             return (ERR);
 778
 779         /*
 780          * Write the string table after the offset tables so we do not
 781          * have to do anything about alignment.
 782          */
 783         for (i = 0; i < tp->ext_Strings; i++) {
 784             if (VALID_STRING(tp->Strings[i + STRCOUNT])) {
 785                 TRACE_OUT(("WRITE ext_Strings[%d]=%s", (int) i,
 786                            _nc_visbuf(tp->Strings[i + STRCOUNT])));
 787                 if (!WRITE_STRING(tp->Strings[i + STRCOUNT]))
 788                     return (ERR);
 789             }
 790         }
 791
 792         /*
 793          * Write the extended names
 794          */
 795         for (i = 0; i < extcnt; i++) {
 796             TRACE_OUT(("WRITE ext_Names[%d]=%s", (int) i, tp->ext_Names[i]));
 797             if (!WRITE_STRING(tp->ext_Names[i]))
 798                 return (ERR);
 799         }
 800
 801     }
 802 #endif /* NCURSES_XNAMES */
 803
 804     total_written++;
 805     return (OK);
 806 }
 807
 808 /*
 809  * Returns the total number of entries written by this process
 810  */
 811 NCURSES_EXPORT(int)
 812 _nc_tic_written(void)
 813 {
 814     return total_written;
 815 }