progs/toe.c

   1 /****************************************************************************
   2  * Copyright (c) 1998-2008,2010 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  *      toe.c --- table of entries report generator
  37  */
  38
  39 #include <progs.priv.h>
  40
  41 #include <sys/stat.h>
  42
  43 #if USE_HASHED_DB
  44 #include <hashed_db.h>
  45 #endif
  46
  47 MODULE_ID("$Id: toe.c,v 1.52 2010/05/01 22:04:08 tom Exp $")
  48
  49 #define isDotname(name) (!strcmp(name, ".") || !strcmp(name, ".."))
  50
  51 const char *_nc_progname;
  52
  53 #if NO_LEAKS
  54 #undef ExitProgram
  55 static void ExitProgram(int code) GCC_NORETURN;
  56 static void
  57 ExitProgram(int code)
  58 {
  59     _nc_free_entries(_nc_head);
  60     _nc_free_tic(code);
  61 }
  62 #endif
  63
  64 static void
  65 failed(const char *msg)
  66 {
  67     perror(msg);
  68     ExitProgram(EXIT_FAILURE);
  69 }
  70
  71 #if USE_HASHED_DB
  72 static bool
  73 make_db_name(char *dst, const char *src, unsigned limit)
  74 {
  75     static const char suffix[] = DBM_SUFFIX;
  76
  77     bool result = FALSE;
  78     unsigned lens = sizeof(suffix) - 1;
  79     unsigned size = strlen(src);
  80     unsigned need = lens + size;
  81
  82     if (need <= limit) {
  83         if (size >= lens
  84             && !strcmp(src + size - lens, suffix))
  85             (void) strcpy(dst, src);
  86         else
  87             (void) sprintf(dst, "%s%s", src, suffix);
  88         result = TRUE;
  89     }
  90     return result;
  91 }
  92 #endif
  93
  94 static bool
  95 is_database(const char *path)
  96 {
  97     bool result = FALSE;
  98 #if USE_DATABASE
  99     if (_nc_is_dir_path(path) && access(path, R_OK | X_OK) == 0) {
 100         result = TRUE;
 101     }
 102 #endif
 103 #if USE_TERMCAP
 104     if (_nc_is_file_path(path) && access(path, R_OK) == 0) {
 105         result = TRUE;
 106     }
 107 #endif
 108 #if USE_HASHED_DB
 109     if (!result) {
 110         char filename[PATH_MAX];
 111         if (_nc_is_file_path(path) && access(path, R_OK) == 0) {
 112             result = TRUE;
 113         } else if (make_db_name(filename, path, sizeof(filename))) {
 114             if (_nc_is_file_path(filename) && access(filename, R_OK) == 0) {
 115                 result = TRUE;
 116             }
 117         }
 118     }
 119 #endif
 120     return result;
 121 }
 122
 123 static void
 124 deschook(const char *cn, TERMTYPE *tp)
 125 /* display a description for the type */
 126 {
 127     const char *desc;
 128
 129     if ((desc = strrchr(tp->term_names, '|')) == 0 || *++desc == '\0')
 130         desc = "(No description)";
 131
 132     (void) printf("%-10s\t%s\n", cn, desc);
 133 }
 134
 135 #if USE_TERMCAP
 136 static void
 137 show_termcap(char *buffer,
 138              void (*hook) (const char *, TERMTYPE *tp))
 139 {
 140     TERMTYPE data;
 141     char *next = strchr(buffer, ':');
 142     char *last;
 143     char *list = buffer;
 144
 145     if (next)
 146         *next = '\0';
 147
 148     last = strrchr(buffer, '|');
 149     if (last)
 150         ++last;
 151
 152     data.term_names = strdup(buffer);
 153     while ((next = strtok(list, "|")) != 0) {
 154         if (next != last)
 155             hook(next, &data);
 156         list = 0;
 157     }
 158     free(data.term_names);
 159 }
 160 #endif
 161
 162 static int
 163 typelist(int eargc, char *eargv[],
 164          bool verbosity,
 165          void (*hook) (const char *, TERMTYPE *tp))
 166 /* apply a function to each entry in given terminfo directories */
 167 {
 168     int i;
 169
 170     for (i = 0; i < eargc; i++) {
 171 #if USE_DATABASE
 172         if (_nc_is_dir_path(eargv[i])) {
 173             char *cwd_buf = 0;
 174             DIR *termdir;
 175             DIRENT *subdir;
 176
 177             if ((termdir = opendir(eargv[i])) == 0) {
 178                 (void) fflush(stdout);
 179                 (void) fprintf(stderr,
 180                                "%s: can't open terminfo directory %s\n",
 181                                _nc_progname, eargv[i]);
 182                 return (EXIT_FAILURE);
 183             } else if (verbosity)
 184                 (void) printf("#\n#%s:\n#\n", eargv[i]);
 185
 186             while ((subdir = readdir(termdir)) != 0) {
 187                 size_t len = NAMLEN(subdir);
 188                 size_t cwd_len = len + strlen(eargv[i]) + 3;
 189                 char name_1[PATH_MAX];
 190                 DIR *entrydir;
 191                 DIRENT *entry;
 192
 193                 cwd_buf = typeRealloc(char, cwd_len, cwd_buf);
 194                 if (cwd_buf == 0)
 195                     failed("realloc cwd_buf");
 196
 197                 assert(cwd_buf != 0);
 198
 199                 strncpy(name_1, subdir->d_name, len)[len] = '\0';
 200                 if (isDotname(name_1))
 201                     continue;
 202
 203                 (void) sprintf(cwd_buf, "%s/%.*s/", eargv[i], (int) len, name_1);
 204                 if (chdir(cwd_buf) != 0)
 205                     continue;
 206
 207                 entrydir = opendir(".");
 208                 if (entrydir == 0) {
 209                     perror(cwd_buf);
 210                     continue;
 211                 }
 212                 while ((entry = readdir(entrydir)) != 0) {
 213                     char name_2[PATH_MAX];
 214                     TERMTYPE lterm;
 215                     char *cn;
 216                     int status;
 217
 218                     len = NAMLEN(entry);
 219                     strncpy(name_2, entry->d_name, len)[len] = '\0';
 220                     if (isDotname(name_2) || !_nc_is_file_path(name_2))
 221                         continue;
 222
 223                     status = _nc_read_file_entry(name_2, &lterm);
 224                     if (status <= 0) {
 225                         (void) fflush(stdout);
 226                         (void) fprintf(stderr,
 227                                        "%s: couldn't open terminfo file %s.\n",
 228                                        _nc_progname, name_2);
 229                         return (EXIT_FAILURE);
 230                     }
 231
 232                     /* only visit things once, by primary name */
 233                     cn = _nc_first_name(lterm.term_names);
 234                     if (!strcmp(cn, name_2)) {
 235                         /* apply the selected hook function */
 236                         (*hook) (cn, &lterm);
 237                     }
 238                     _nc_free_termtype(&lterm);
 239                 }
 240                 closedir(entrydir);
 241             }
 242             closedir(termdir);
 243             if (cwd_buf != 0)
 244                 free(cwd_buf);
 245         }
 246 #if USE_HASHED_DB
 247         else {
 248             DB *capdbp;
 249             char filename[PATH_MAX];
 250
 251             if (make_db_name(filename, eargv[i], sizeof(filename))) {
 252                 if ((capdbp = _nc_db_open(filename, FALSE)) != 0) {
 253                     DBT key, data;
 254                     int code;
 255
 256                     code = _nc_db_first(capdbp, &key, &data);
 257                     while (code == 0) {
 258                         TERMTYPE lterm;
 259                         int used;
 260                         char *have;
 261                         char *cn;
 262
 263                         if (_nc_db_have_data(&key, &data, &have, &used)) {
 264                             if (_nc_read_termtype(&lterm, have, used) > 0) {
 265                                 /* only visit things once, by primary name */
 266                                 cn = _nc_first_name(lterm.term_names);
 267                                 /* apply the selected hook function */
 268                                 (*hook) (cn, &lterm);
 269                                 _nc_free_termtype(&lterm);
 270                             }
 271                         }
 272                         code = _nc_db_next(capdbp, &key, &data);
 273                     }
 274
 275                     _nc_db_close(capdbp);
 276                 }
 277             }
 278         }
 279 #endif
 280 #endif
 281 #if USE_TERMCAP
 282 #if HAVE_BSD_CGETENT
 283         char *db_array[2];
 284         char *buffer = 0;
 285
 286         if (verbosity)
 287             (void) printf("#\n#%s:\n#\n", eargv[i]);
 288
 289         db_array[0] = eargv[i];
 290         db_array[1] = 0;
 291
 292         if (cgetfirst(&buffer, db_array)) {
 293             show_termcap(buffer, hook);
 294             free(buffer);
 295             while (cgetnext(&buffer, db_array)) {
 296                 show_termcap(buffer, hook);
 297                 free(buffer);
 298             }
 299         }
 300         cgetclose();
 301 #else
 302         /* scan termcap text-file only */
 303         if (_nc_is_file_path(eargv[i])) {
 304             char buffer[2048];
 305             FILE *fp;
 306
 307             if ((fp = fopen(eargv[i], "r")) != 0) {
 308                 while (fgets(buffer, sizeof(buffer), fp) != 0) {
 309                     if (*buffer == '#')
 310                         continue;
 311                     if (isspace(*buffer))
 312                         continue;
 313                     show_termcap(buffer, hook);
 314                 }
 315                 fclose(fp);
 316             }
 317         }
 318 #endif
 319 #endif
 320     }
 321
 322     return (EXIT_SUCCESS);
 323 }
 324
 325 static void
 326 usage(void)
 327 {
 328     (void) fprintf(stderr, "usage: %s [-ahuUV] [-v n] [file...]\n", _nc_progname);
 329     ExitProgram(EXIT_FAILURE);
 330 }
 331
 332 int
 333 main(int argc, char *argv[])
 334 {
 335     bool all_dirs = FALSE;
 336     bool direct_dependencies = FALSE;
 337     bool invert_dependencies = FALSE;
 338     bool header = FALSE;
 339     char *report_file = 0;
 340     unsigned i;
 341     int code;
 342     int this_opt, last_opt = '?';
 343     int v_opt = 0;
 344
 345     _nc_progname = _nc_rootname(argv[0]);
 346
 347     while ((this_opt = getopt(argc, argv, "0123456789ahu:vU:V")) != -1) {
 348         /* handle optional parameter */
 349         if (isdigit(this_opt)) {
 350             switch (last_opt) {
 351             case 'v':
 352                 v_opt = (this_opt - '0');
 353                 break;
 354             default:
 355                 if (isdigit(last_opt))
 356                     v_opt *= 10;
 357                 else
 358                     v_opt = 0;
 359                 v_opt += (this_opt - '0');
 360                 last_opt = this_opt;
 361             }
 362             continue;
 363         }
 364         switch (this_opt) {
 365         case 'a':
 366             all_dirs = TRUE;
 367             break;
 368         case 'h':
 369             header = TRUE;
 370             break;
 371         case 'u':
 372             direct_dependencies = TRUE;
 373             report_file = optarg;
 374             break;
 375         case 'v':
 376             v_opt = 1;
 377             break;
 378         case 'U':
 379             invert_dependencies = TRUE;
 380             report_file = optarg;
 381             break;
 382         case 'V':
 383             puts(curses_version());
 384             ExitProgram(EXIT_SUCCESS);
 385         default:
 386             usage();
 387         }
 388     }
 389     set_trace_level(v_opt);
 390
 391     if (report_file != 0) {
 392         if (freopen(report_file, "r", stdin) == 0) {
 393             (void) fflush(stdout);
 394             fprintf(stderr, "%s: can't open %s\n", _nc_progname, report_file);
 395             ExitProgram(EXIT_FAILURE);
 396         }
 397
 398         /* parse entries out of the source file */
 399         _nc_set_source(report_file);
 400         _nc_read_entry_source(stdin, 0, FALSE, FALSE, NULLHOOK);
 401     }
 402
 403     /* maybe we want a direct-dependency listing? */
 404     if (direct_dependencies) {
 405         ENTRY *qp;
 406
 407         for_entry_list(qp) {
 408             if (qp->nuses) {
 409                 unsigned j;
 410
 411                 (void) printf("%s:", _nc_first_name(qp->tterm.term_names));
 412                 for (j = 0; j < qp->nuses; j++)
 413                     (void) printf(" %s", qp->uses[j].name);
 414                 putchar('\n');
 415             }
 416         }
 417
 418         ExitProgram(EXIT_SUCCESS);
 419     }
 420
 421     /* maybe we want a reverse-dependency listing? */
 422     if (invert_dependencies) {
 423         ENTRY *qp, *rp;
 424         int matchcount;
 425
 426         for_entry_list(qp) {
 427             matchcount = 0;
 428             for_entry_list(rp) {
 429                 if (rp->nuses == 0)
 430                     continue;
 431
 432                 for (i = 0; i < rp->nuses; i++)
 433                     if (_nc_name_match(qp->tterm.term_names,
 434                                        rp->uses[i].name, "|")) {
 435                         if (matchcount++ == 0)
 436                             (void) printf("%s:",
 437                                           _nc_first_name(qp->tterm.term_names));
 438                         (void) printf(" %s",
 439                                       _nc_first_name(rp->tterm.term_names));
 440                     }
 441             }
 442             if (matchcount)
 443                 putchar('\n');
 444         }
 445
 446         ExitProgram(EXIT_SUCCESS);
 447     }
 448
 449     /*
 450      * If we get this far, user wants a simple terminal type listing.
 451      */
 452     if (optind < argc) {
 453         code = typelist(argc - optind, argv + optind, header, deschook);
 454     } else if (all_dirs) {
 455         DBDIRS state;
 456         int offset;
 457         int pass;
 458         const char *path;
 459         char **eargv = 0;
 460
 461         code = EXIT_FAILURE;
 462         for (pass = 0; pass < 2; ++pass) {
 463             unsigned count = 0;
 464
 465             _nc_first_db(&state, &offset);
 466             while ((path = _nc_next_db(&state, &offset)) != 0) {
 467                 if (!is_database(path)) {
 468                     ;
 469                 } else if (eargv != 0) {
 470                     unsigned n;
 471                     int found = FALSE;
 472
 473                     /* eliminate duplicates */
 474                     for (n = 0; n < count; ++n) {
 475                         if (!strcmp(path, eargv[n])) {
 476                             found = TRUE;
 477                             break;
 478                         }
 479                     }
 480                     if (!found) {
 481                         eargv[count] = strdup(path);
 482                         ++count;
 483                     }
 484                 } else {
 485                     ++count;
 486                 }
 487             }
 488             if (!pass) {
 489                 eargv = typeCalloc(char *, count + 1);
 490                 if (eargv == 0)
 491                     failed("realloc eargv");
 492
 493                 assert(eargv != 0);
 494             } else {
 495                 code = typelist((int) count, eargv, header, deschook);
 496                 while (count-- > 0)
 497                     free(eargv[count]);
 498                 free(eargv);
 499             }
 500         }
 501     } else {
 502         DBDIRS state;
 503         int offset;
 504         const char *path;
 505         char *eargv[3];
 506         int count = 0;
 507
 508         _nc_first_db(&state, &offset);
 509         while ((path = _nc_next_db(&state, &offset)) != 0) {
 510             if (is_database(path)) {
 511                 eargv[count++] = strdup(path);
 512                 break;
 513             }
 514         }
 515         eargv[count] = 0;
 516
 517         code = typelist(count, eargv, header, deschook);
 518
 519         while (count-- > 0)
 520             free(eargv[count]);
 521     }
 522     _nc_last_db();
 523
 524     ExitProgram(code);
 525 }