man_validate.c

   1 /*      $OpenBSD$ */
   2 /*
   3  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
   4  * Copyright (c) 2010, 2012-2015 Ingo Schwarze <schwarze@openbsd.org>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18 #include "config.h"
  19
  20 #include <sys/types.h>
  21
  22 #include <assert.h>
  23 #include <ctype.h>
  24 #include <errno.h>
  25 #include <limits.h>
  26 #include <stdarg.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <time.h>
  30
  31 #include "man.h"
  32 #include "mandoc.h"
  33 #include "mandoc_aux.h"
  34 #include "libman.h"
  35 #include "libmandoc.h"
  36
  37 #define CHKARGS   struct man *man, struct man_node *n
  38
  39 typedef void    (*v_check)(CHKARGS);
  40
  41 static  void      check_par(CHKARGS);
  42 static  void      check_part(CHKARGS);
  43 static  void      check_root(CHKARGS);
  44 static  void      check_text(CHKARGS);
  45
  46 static  void      post_AT(CHKARGS);
  47 static  void      post_IP(CHKARGS);
  48 static  void      post_vs(CHKARGS);
  49 static  void      post_fi(CHKARGS);
  50 static  void      post_ft(CHKARGS);
  51 static  void      post_nf(CHKARGS);
  52 static  void      post_OP(CHKARGS);
  53 static  void      post_TH(CHKARGS);
  54 static  void      post_UC(CHKARGS);
  55 static  void      post_UR(CHKARGS);
  56
  57 static  v_check man_valids[MAN_MAX] = {
  58         post_vs,    /* br */
  59         post_TH,    /* TH */
  60         NULL,       /* SH */
  61         NULL,       /* SS */
  62         NULL,       /* TP */
  63         check_par,  /* LP */
  64         check_par,  /* PP */
  65         check_par,  /* P */
  66         post_IP,    /* IP */
  67         NULL,       /* HP */
  68         NULL,       /* SM */
  69         NULL,       /* SB */
  70         NULL,       /* BI */
  71         NULL,       /* IB */
  72         NULL,       /* BR */
  73         NULL,       /* RB */
  74         NULL,       /* R */
  75         NULL,       /* B */
  76         NULL,       /* I */
  77         NULL,       /* IR */
  78         NULL,       /* RI */
  79         post_vs,    /* sp */
  80         post_nf,    /* nf */
  81         post_fi,    /* fi */
  82         NULL,       /* RE */
  83         check_part, /* RS */
  84         NULL,       /* DT */
  85         post_UC,    /* UC */
  86         NULL,       /* PD */
  87         post_AT,    /* AT */
  88         NULL,       /* in */
  89         post_ft,    /* ft */
  90         post_OP,    /* OP */
  91         post_nf,    /* EX */
  92         post_fi,    /* EE */
  93         post_UR,    /* UR */
  94         NULL,       /* UE */
  95         NULL,       /* ll */
  96 };
  97
  98
  99 void
 100 man_valid_post(struct man *man)
 101 {
 102         struct man_node *n;
 103         v_check         *cp;
 104
 105         n = man->last;
 106         if (n->flags & MAN_VALID)
 107                 return;
 108         n->flags |= MAN_VALID;
 109
 110         switch (n->type) {
 111         case MAN_TEXT:
 112                 check_text(man, n);
 113                 break;
 114         case MAN_ROOT:
 115                 check_root(man, n);
 116                 break;
 117         case MAN_EQN:
 118                 /* FALLTHROUGH */
 119         case MAN_TBL:
 120                 break;
 121         default:
 122                 cp = man_valids + n->tok;
 123                 if (*cp)
 124                         (*cp)(man, n);
 125                 break;
 126         }
 127 }
 128
 129 static void
 130 check_root(CHKARGS)
 131 {
 132
 133         assert((man->flags & (MAN_BLINE | MAN_ELINE)) == 0);
 134
 135         if (NULL == man->first->child)
 136                 mandoc_msg(MANDOCERR_DOC_EMPTY, man->parse,
 137                     n->line, n->pos, NULL);
 138         else
 139                 man->meta.hasbody = 1;
 140
 141         if (NULL == man->meta.title) {
 142                 mandoc_msg(MANDOCERR_TH_NOTITLE, man->parse,
 143                     n->line, n->pos, NULL);
 144
 145                 /*
 146                  * If a title hasn't been set, do so now (by
 147                  * implication, date and section also aren't set).
 148                  */
 149
 150                 man->meta.title = mandoc_strdup("");
 151                 man->meta.msec = mandoc_strdup("");
 152                 man->meta.date = man->quick ? mandoc_strdup("") :
 153                     mandoc_normdate(man->parse, NULL, n->line, n->pos);
 154         }
 155 }
 156
 157 static void
 158 check_text(CHKARGS)
 159 {
 160         char            *cp, *p;
 161
 162         if (MAN_LITERAL & man->flags)
 163                 return;
 164
 165         cp = n->string;
 166         for (p = cp; NULL != (p = strchr(p, '\t')); p++)
 167                 mandoc_msg(MANDOCERR_FI_TAB, man->parse,
 168                     n->line, n->pos + (p - cp), NULL);
 169 }
 170
 171 static void
 172 post_OP(CHKARGS)
 173 {
 174
 175         if (n->nchild == 0)
 176                 mandoc_msg(MANDOCERR_OP_EMPTY, man->parse,
 177                     n->line, n->pos, "OP");
 178         else if (n->nchild > 2) {
 179                 n = n->child->next->next;
 180                 mandoc_vmsg(MANDOCERR_ARG_EXCESS, man->parse,
 181                     n->line, n->pos, "OP ... %s", n->string);
 182         }
 183 }
 184
 185 static void
 186 post_UR(CHKARGS)
 187 {
 188
 189         if (n->type == MAN_HEAD && n->child == NULL)
 190                 mandoc_vmsg(MANDOCERR_UR_NOHEAD, man->parse,
 191                     n->line, n->pos, "UR");
 192         check_part(man, n);
 193 }
 194
 195 static void
 196 post_ft(CHKARGS)
 197 {
 198         char    *cp;
 199         int      ok;
 200
 201         if (0 == n->nchild)
 202                 return;
 203
 204         ok = 0;
 205         cp = n->child->string;
 206         switch (*cp) {
 207         case '1':
 208                 /* FALLTHROUGH */
 209         case '2':
 210                 /* FALLTHROUGH */
 211         case '3':
 212                 /* FALLTHROUGH */
 213         case '4':
 214                 /* FALLTHROUGH */
 215         case 'I':
 216                 /* FALLTHROUGH */
 217         case 'P':
 218                 /* FALLTHROUGH */
 219         case 'R':
 220                 if ('\0' == cp[1])
 221                         ok = 1;
 222                 break;
 223         case 'B':
 224                 if ('\0' == cp[1] || ('I' == cp[1] && '\0' == cp[2]))
 225                         ok = 1;
 226                 break;
 227         case 'C':
 228                 if ('W' == cp[1] && '\0' == cp[2])
 229                         ok = 1;
 230                 break;
 231         default:
 232                 break;
 233         }
 234
 235         if (0 == ok) {
 236                 mandoc_vmsg(MANDOCERR_FT_BAD, man->parse,
 237                     n->line, n->pos, "ft %s", cp);
 238                 *cp = '\0';
 239         }
 240 }
 241
 242 static void
 243 check_part(CHKARGS)
 244 {
 245
 246         if (n->type == MAN_BODY && n->child == NULL)
 247                 mandoc_msg(MANDOCERR_BLK_EMPTY, man->parse,
 248                     n->line, n->pos, man_macronames[n->tok]);
 249 }
 250
 251 static void
 252 check_par(CHKARGS)
 253 {
 254
 255         switch (n->type) {
 256         case MAN_BLOCK:
 257                 if (0 == n->body->nchild)
 258                         man_node_delete(man, n);
 259                 break;
 260         case MAN_BODY:
 261                 if (0 == n->nchild)
 262                         mandoc_vmsg(MANDOCERR_PAR_SKIP,
 263                             man->parse, n->line, n->pos,
 264                             "%s empty", man_macronames[n->tok]);
 265                 break;
 266         case MAN_HEAD:
 267                 if (n->nchild)
 268                         mandoc_vmsg(MANDOCERR_ARG_SKIP,
 269                             man->parse, n->line, n->pos,
 270                             "%s %s%s", man_macronames[n->tok],
 271                             n->child->string,
 272                             n->nchild > 1 ? " ..." : "");
 273                 break;
 274         default:
 275                 break;
 276         }
 277 }
 278
 279 static void
 280 post_IP(CHKARGS)
 281 {
 282
 283         switch (n->type) {
 284         case MAN_BLOCK:
 285                 if (0 == n->head->nchild && 0 == n->body->nchild)
 286                         man_node_delete(man, n);
 287                 break;
 288         case MAN_BODY:
 289                 if (0 == n->parent->head->nchild && 0 == n->nchild)
 290                         mandoc_vmsg(MANDOCERR_PAR_SKIP,
 291                             man->parse, n->line, n->pos,
 292                             "%s empty", man_macronames[n->tok]);
 293                 break;
 294         default:
 295                 break;
 296         }
 297 }
 298
 299 static void
 300 post_TH(CHKARGS)
 301 {
 302         struct man_node *nb;
 303         const char      *p;
 304
 305         free(man->meta.title);
 306         free(man->meta.vol);
 307         free(man->meta.source);
 308         free(man->meta.msec);
 309         free(man->meta.date);
 310
 311         man->meta.title = man->meta.vol = man->meta.date =
 312             man->meta.msec = man->meta.source = NULL;
 313
 314         nb = n;
 315
 316         /* ->TITLE<- MSEC DATE SOURCE VOL */
 317
 318         n = n->child;
 319         if (n && n->string) {
 320                 for (p = n->string; '\0' != *p; p++) {
 321                         /* Only warn about this once... */
 322                         if (isalpha((unsigned char)*p) &&
 323                             ! isupper((unsigned char)*p)) {
 324                                 mandoc_vmsg(MANDOCERR_TITLE_CASE,
 325                                     man->parse, n->line,
 326                                     n->pos + (p - n->string),
 327                                     "TH %s", n->string);
 328                                 break;
 329                         }
 330                 }
 331                 man->meta.title = mandoc_strdup(n->string);
 332         } else {
 333                 man->meta.title = mandoc_strdup("");
 334                 mandoc_msg(MANDOCERR_TH_NOTITLE, man->parse,
 335                     nb->line, nb->pos, "TH");
 336         }
 337
 338         /* TITLE ->MSEC<- DATE SOURCE VOL */
 339
 340         if (n)
 341                 n = n->next;
 342         if (n && n->string)
 343                 man->meta.msec = mandoc_strdup(n->string);
 344         else {
 345                 man->meta.msec = mandoc_strdup("");
 346                 mandoc_vmsg(MANDOCERR_MSEC_MISSING, man->parse,
 347                     nb->line, nb->pos, "TH %s", man->meta.title);
 348         }
 349
 350         /* TITLE MSEC ->DATE<- SOURCE VOL */
 351
 352         if (n)
 353                 n = n->next;
 354         if (n && n->string && '\0' != n->string[0]) {
 355                 man->meta.date = man->quick ?
 356                     mandoc_strdup(n->string) :
 357                     mandoc_normdate(man->parse, n->string,
 358                         n->line, n->pos);
 359         } else {
 360                 man->meta.date = mandoc_strdup("");
 361                 mandoc_msg(MANDOCERR_DATE_MISSING, man->parse,
 362                     n ? n->line : nb->line,
 363                     n ? n->pos : nb->pos, "TH");
 364         }
 365
 366         /* TITLE MSEC DATE ->SOURCE<- VOL */
 367
 368         if (n && (n = n->next))
 369                 man->meta.source = mandoc_strdup(n->string);
 370         else if (man->defos != NULL)
 371                 man->meta.source = mandoc_strdup(man->defos);
 372
 373         /* TITLE MSEC DATE SOURCE ->VOL<- */
 374         /* If missing, use the default VOL name for MSEC. */
 375
 376         if (n && (n = n->next))
 377                 man->meta.vol = mandoc_strdup(n->string);
 378         else if ('\0' != man->meta.msec[0] &&
 379             (NULL != (p = mandoc_a2msec(man->meta.msec))))
 380                 man->meta.vol = mandoc_strdup(p);
 381
 382         if (n != NULL && (n = n->next) != NULL)
 383                 mandoc_vmsg(MANDOCERR_ARG_EXCESS, man->parse,
 384                     n->line, n->pos, "TH ... %s", n->string);
 385
 386         /*
 387          * Remove the `TH' node after we've processed it for our
 388          * meta-data.
 389          */
 390         man_node_delete(man, man->last);
 391 }
 392
 393 static void
 394 post_nf(CHKARGS)
 395 {
 396
 397         if (man->flags & MAN_LITERAL)
 398                 mandoc_msg(MANDOCERR_NF_SKIP, man->parse,
 399                     n->line, n->pos, "nf");
 400
 401         man->flags |= MAN_LITERAL;
 402 }
 403
 404 static void
 405 post_fi(CHKARGS)
 406 {
 407
 408         if ( ! (MAN_LITERAL & man->flags))
 409                 mandoc_msg(MANDOCERR_FI_SKIP, man->parse,
 410                     n->line, n->pos, "fi");
 411
 412         man->flags &= ~MAN_LITERAL;
 413 }
 414
 415 static void
 416 post_UC(CHKARGS)
 417 {
 418         static const char * const bsd_versions[] = {
 419             "3rd Berkeley Distribution",
 420             "4th Berkeley Distribution",
 421             "4.2 Berkeley Distribution",
 422             "4.3 Berkeley Distribution",
 423             "4.4 Berkeley Distribution",
 424         };
 425
 426         const char      *p, *s;
 427
 428         n = n->child;
 429
 430         if (NULL == n || MAN_TEXT != n->type)
 431                 p = bsd_versions[0];
 432         else {
 433                 s = n->string;
 434                 if (0 == strcmp(s, "3"))
 435                         p = bsd_versions[0];
 436                 else if (0 == strcmp(s, "4"))
 437                         p = bsd_versions[1];
 438                 else if (0 == strcmp(s, "5"))
 439                         p = bsd_versions[2];
 440                 else if (0 == strcmp(s, "6"))
 441                         p = bsd_versions[3];
 442                 else if (0 == strcmp(s, "7"))
 443                         p = bsd_versions[4];
 444                 else
 445                         p = bsd_versions[0];
 446         }
 447
 448         free(man->meta.source);
 449         man->meta.source = mandoc_strdup(p);
 450 }
 451
 452 static void
 453 post_AT(CHKARGS)
 454 {
 455         static const char * const unix_versions[] = {
 456             "7th Edition",
 457             "System III",
 458             "System V",
 459             "System V Release 2",
 460         };
 461
 462         const char      *p, *s;
 463         struct man_node *nn;
 464
 465         n = n->child;
 466
 467         if (NULL == n || MAN_TEXT != n->type)
 468                 p = unix_versions[0];
 469         else {
 470                 s = n->string;
 471                 if (0 == strcmp(s, "3"))
 472                         p = unix_versions[0];
 473                 else if (0 == strcmp(s, "4"))
 474                         p = unix_versions[1];
 475                 else if (0 == strcmp(s, "5")) {
 476                         nn = n->next;
 477                         if (nn && MAN_TEXT == nn->type && nn->string[0])
 478                                 p = unix_versions[3];
 479                         else
 480                                 p = unix_versions[2];
 481                 } else
 482                         p = unix_versions[0];
 483         }
 484
 485         free(man->meta.source);
 486         man->meta.source = mandoc_strdup(p);
 487 }
 488
 489 static void
 490 post_vs(CHKARGS)
 491 {
 492
 493         if (NULL != n->prev)
 494                 return;
 495
 496         switch (n->parent->tok) {
 497         case MAN_SH:
 498                 /* FALLTHROUGH */
 499         case MAN_SS:
 500                 mandoc_vmsg(MANDOCERR_PAR_SKIP, man->parse, n->line, n->pos,
 501                     "%s after %s", man_macronames[n->tok],
 502                     man_macronames[n->parent->tok]);
 503                 /* FALLTHROUGH */
 504         case MAN_MAX:
 505                 /*
 506                  * Don't warn about this because it occurs in pod2man
 507                  * and would cause considerable (unfixable) warnage.
 508                  */
 509                 man_node_delete(man, n);
 510                 break;
 511         default:
 512                 break;
 513         }
 514 }