summaryrefslogtreecommitdiffstats
path: root/man_validate.c
blob: 3a774965536406724e759bf6ea7c8712ab56c81d (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
/*	$OpenBSD$ */
/*
 * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
 * Copyright (c) 2010, 2012, 2013, 2014 Ingo Schwarze <schwarze@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#include "config.h"

#include <sys/types.h>

#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <limits.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#include "man.h"
#include "mandoc.h"
#include "mandoc_aux.h"
#include "libman.h"
#include "libmandoc.h"

#define	CHKARGS	  struct man *man, struct man_node *n

typedef	void	(*v_check)(CHKARGS);

static	void	  check_eq0(CHKARGS);
static	void	  check_eq2(CHKARGS);
static	void	  check_le1(CHKARGS);
static	void	  check_le5(CHKARGS);
static	void	  check_par(CHKARGS);
static	void	  check_part(CHKARGS);
static	void	  check_root(CHKARGS);
static	void	  check_text(CHKARGS);

static	void	  post_AT(CHKARGS);
static	void	  post_IP(CHKARGS);
static	void	  post_vs(CHKARGS);
static	void	  post_fi(CHKARGS);
static	void	  post_ft(CHKARGS);
static	void	  post_nf(CHKARGS);
static	void	  post_TH(CHKARGS);
static	void	  post_UC(CHKARGS);
static	void	  post_UR(CHKARGS);

static	v_check man_valids[MAN_MAX] = {
	post_vs,    /* br */
	post_TH,    /* TH */
	NULL,       /* SH */
	NULL,       /* SS */
	NULL,       /* TP */
	check_par,  /* LP */
	check_par,  /* PP */
	check_par,  /* P */
	post_IP,    /* IP */
	NULL,       /* HP */
	NULL,       /* SM */
	NULL,       /* SB */
	NULL,       /* BI */
	NULL,       /* IB */
	NULL,       /* BR */
	NULL,       /* RB */
	NULL,       /* R */
	NULL,       /* B */
	NULL,       /* I */
	NULL,       /* IR */
	NULL,       /* RI */
	post_vs,    /* sp */
	post_nf,    /* nf */
	post_fi,    /* fi */
	NULL,       /* RE */
	check_part, /* RS */
	NULL,       /* DT */
	post_UC,    /* UC */
	check_le1,  /* PD */
	post_AT,    /* AT */
	NULL,       /* in */
	post_ft,    /* ft */
	check_eq2,  /* OP */
	post_nf,    /* EX */
	post_fi,    /* EE */
	post_UR,    /* UR */
	NULL,       /* UE */
	NULL,       /* ll */
};


void
man_valid_post(struct man *man)
{
	struct man_node	*n;
	v_check		*cp;

	n = man->last;
	if (n->flags & MAN_VALID)
		return;
	n->flags |= MAN_VALID;

	switch (n->type) {
	case MAN_TEXT:
		check_text(man, n);
		break;
	case MAN_ROOT:
		check_root(man, n);
		break;
	case MAN_EQN:
		/* FALLTHROUGH */
	case MAN_TBL:
		break;
	default:
		cp = man_valids + n->tok;
		if (*cp)
			(*cp)(man, n);
		break;
	}
}

static void
check_root(CHKARGS)
{

	assert((man->flags & (MAN_BLINE | MAN_ELINE)) == 0);

	if (NULL == man->first->child)
		mandoc_msg(MANDOCERR_DOC_EMPTY, man->parse,
		    n->line, n->pos, NULL);
	else
		man->meta.hasbody = 1;

	if (NULL == man->meta.title) {
		mandoc_msg(MANDOCERR_TH_NOTITLE, man->parse,
		    n->line, n->pos, NULL);

		/*
		 * If a title hasn't been set, do so now (by
		 * implication, date and section also aren't set).
		 */

		man->meta.title = mandoc_strdup("");
		man->meta.msec = mandoc_strdup("");
		man->meta.date = man->quick ? mandoc_strdup("") :
		    mandoc_normdate(man->parse, NULL, n->line, n->pos);
	}
}

static void
check_text(CHKARGS)
{
	char		*cp, *p;

	if (MAN_LITERAL & man->flags)
		return;

	cp = n->string;
	for (p = cp; NULL != (p = strchr(p, '\t')); p++)
		mandoc_msg(MANDOCERR_FI_TAB, man->parse,
		    n->line, n->pos + (p - cp), NULL);
}

#define	INEQ_DEFINE(x, ineq, name) \
static void \
check_##name(CHKARGS) \
{ \
	if (n->nchild ineq (x)) \
		return; \
	mandoc_vmsg(MANDOCERR_ARGCOUNT, man->parse, n->line, n->pos, \
	    "line arguments %s %d (have %d)", \
	    #ineq, (x), n->nchild); \
}

INEQ_DEFINE(0, ==, eq0)
INEQ_DEFINE(2, ==, eq2)
INEQ_DEFINE(1, <=, le1)
INEQ_DEFINE(5, <=, le5)

static void
post_UR(CHKARGS)
{

	if (MAN_HEAD == n->type && 1 != n->nchild)
		mandoc_vmsg(MANDOCERR_ARGCOUNT, man->parse, n->line,
		    n->pos, "line arguments eq 1 (have %d)", n->nchild);
	check_part(man, n);
}

static void
post_ft(CHKARGS)
{
	char	*cp;
	int	 ok;

	if (0 == n->nchild)
		return;

	ok = 0;
	cp = n->child->string;
	switch (*cp) {
	case '1':
		/* FALLTHROUGH */
	case '2':
		/* FALLTHROUGH */
	case '3':
		/* FALLTHROUGH */
	case '4':
		/* FALLTHROUGH */
	case 'I':
		/* FALLTHROUGH */
	case 'P':
		/* FALLTHROUGH */
	case 'R':
		if ('\0' == cp[1])
			ok = 1;
		break;
	case 'B':
		if ('\0' == cp[1] || ('I' == cp[1] && '\0' == cp[2]))
			ok = 1;
		break;
	case 'C':
		if ('W' == cp[1] && '\0' == cp[2])
			ok = 1;
		break;
	default:
		break;
	}

	if (0 == ok) {
		mandoc_vmsg(MANDOCERR_FT_BAD, man->parse,
		    n->line, n->pos, "ft %s", cp);
		*cp = '\0';
	}

	if (1 < n->nchild)
		mandoc_vmsg(MANDOCERR_ARGCOUNT, man->parse, n->line,
		    n->pos, "want one child (have %d)", n->nchild);
}

static void
check_part(CHKARGS)
{

	if (MAN_BODY == n->type && 0 == n->nchild)
		mandoc_msg(MANDOCERR_ARGCWARN, man->parse, n->line,
		    n->pos, "want children (have none)");
}

static void
check_par(CHKARGS)
{

	switch (n->type) {
	case MAN_BLOCK:
		if (0 == n->body->nchild)
			man_node_delete(man, n);
		break;
	case MAN_BODY:
		if (0 == n->nchild)
			mandoc_vmsg(MANDOCERR_PAR_SKIP,
			    man->parse, n->line, n->pos,
			    "%s empty", man_macronames[n->tok]);
		break;
	case MAN_HEAD:
		if (n->nchild)
			mandoc_vmsg(MANDOCERR_ARG_SKIP,
			    man->parse, n->line, n->pos,
			    "%s %s%s", man_macronames[n->tok],
			    n->child->string,
			    n->nchild > 1 ? " ..." : "");
		break;
	default:
		break;
	}
}

static void
post_IP(CHKARGS)
{

	switch (n->type) {
	case MAN_BLOCK:
		if (0 == n->head->nchild && 0 == n->body->nchild)
			man_node_delete(man, n);
		break;
	case MAN_BODY:
		if (0 == n->parent->head->nchild && 0 == n->nchild)
			mandoc_vmsg(MANDOCERR_PAR_SKIP,
			    man->parse, n->line, n->pos,
			    "%s empty", man_macronames[n->tok]);
		break;
	default:
		break;
	}
}

static void
post_TH(CHKARGS)
{
	struct man_node	*nb;
	const char	*p;

	check_le5(man, n);

	free(man->meta.title);
	free(man->meta.vol);
	free(man->meta.source);
	free(man->meta.msec);
	free(man->meta.date);

	man->meta.title = man->meta.vol = man->meta.date =
	    man->meta.msec = man->meta.source = NULL;

	nb = n;

	/* ->TITLE<- MSEC DATE SOURCE VOL */

	n = n->child;
	if (n && n->string) {
		for (p = n->string; '\0' != *p; p++) {
			/* Only warn about this once... */
			if (isalpha((unsigned char)*p) &&
			    ! isupper((unsigned char)*p)) {
				mandoc_vmsg(MANDOCERR_TITLE_CASE,
				    man->parse, n->line,
				    n->pos + (p - n->string),
				    "TH %s", n->string);
				break;
			}
		}
		man->meta.title = mandoc_strdup(n->string);
	} else {
		man->meta.title = mandoc_strdup("");
		mandoc_msg(MANDOCERR_TH_NOTITLE, man->parse,
		    nb->line, nb->pos, "TH");
	}

	/* TITLE ->MSEC<- DATE SOURCE VOL */

	if (n)
		n = n->next;
	if (n && n->string)
		man->meta.msec = mandoc_strdup(n->string);
	else {
		man->meta.msec = mandoc_strdup("");
		mandoc_vmsg(MANDOCERR_MSEC_MISSING, man->parse,
		    nb->line, nb->pos, "TH %s", man->meta.title);
	}

	/* TITLE MSEC ->DATE<- SOURCE VOL */

	if (n)
		n = n->next;
	if (n && n->string && '\0' != n->string[0]) {
		man->meta.date = man->quick ?
		    mandoc_strdup(n->string) :
		    mandoc_normdate(man->parse, n->string,
			n->line, n->pos);
	} else {
		man->meta.date = mandoc_strdup("");
		mandoc_msg(MANDOCERR_DATE_MISSING, man->parse,
		    n ? n->line : nb->line,
		    n ? n->pos : nb->pos, "TH");
	}

	/* TITLE MSEC DATE ->SOURCE<- VOL */

	if (n && (n = n->next))
		man->meta.source = mandoc_strdup(n->string);
	else if (man->defos != NULL)
		man->meta.source = mandoc_strdup(man->defos);

	/* TITLE MSEC DATE SOURCE ->VOL<- */
	/* If missing, use the default VOL name for MSEC. */

	if (n && (n = n->next))
		man->meta.vol = mandoc_strdup(n->string);
	else if ('\0' != man->meta.msec[0] &&
	    (NULL != (p = mandoc_a2msec(man->meta.msec))))
		man->meta.vol = mandoc_strdup(p);

	/*
	 * Remove the `TH' node after we've processed it for our
	 * meta-data.
	 */
	man_node_delete(man, man->last);
}

static void
post_nf(CHKARGS)
{

	check_eq0(man, n);

	if (MAN_LITERAL & man->flags)
		mandoc_msg(MANDOCERR_NF_SKIP, man->parse,
		    n->line, n->pos, "nf");

	man->flags |= MAN_LITERAL;
}

static void
post_fi(CHKARGS)
{

	check_eq0(man, n);

	if ( ! (MAN_LITERAL & man->flags))
		mandoc_msg(MANDOCERR_FI_SKIP, man->parse,
		    n->line, n->pos, "fi");

	man->flags &= ~MAN_LITERAL;
}

static void
post_UC(CHKARGS)
{
	static const char * const bsd_versions[] = {
	    "3rd Berkeley Distribution",
	    "4th Berkeley Distribution",
	    "4.2 Berkeley Distribution",
	    "4.3 Berkeley Distribution",
	    "4.4 Berkeley Distribution",
	};

	const char	*p, *s;

	n = n->child;

	if (NULL == n || MAN_TEXT != n->type)
		p = bsd_versions[0];
	else {
		s = n->string;
		if (0 == strcmp(s, "3"))
			p = bsd_versions[0];
		else if (0 == strcmp(s, "4"))
			p = bsd_versions[1];
		else if (0 == strcmp(s, "5"))
			p = bsd_versions[2];
		else if (0 == strcmp(s, "6"))
			p = bsd_versions[3];
		else if (0 == strcmp(s, "7"))
			p = bsd_versions[4];
		else
			p = bsd_versions[0];
	}

	free(man->meta.source);
	man->meta.source = mandoc_strdup(p);
}

static void
post_AT(CHKARGS)
{
	static const char * const unix_versions[] = {
	    "7th Edition",
	    "System III",
	    "System V",
	    "System V Release 2",
	};

	const char	*p, *s;
	struct man_node	*nn;

	n = n->child;

	if (NULL == n || MAN_TEXT != n->type)
		p = unix_versions[0];
	else {
		s = n->string;
		if (0 == strcmp(s, "3"))
			p = unix_versions[0];
		else if (0 == strcmp(s, "4"))
			p = unix_versions[1];
		else if (0 == strcmp(s, "5")) {
			nn = n->next;
			if (nn && MAN_TEXT == nn->type && nn->string[0])
				p = unix_versions[3];
			else
				p = unix_versions[2];
		} else
			p = unix_versions[0];
	}

	free(man->meta.source);
	man->meta.source = mandoc_strdup(p);
}

static void
post_vs(CHKARGS)
{

	if (n->tok == MAN_br)
		check_eq0(man, n);
	else
		check_le1(man, n);

	if (NULL != n->prev)
		return;

	switch (n->parent->tok) {
	case MAN_SH:
		/* FALLTHROUGH */
	case MAN_SS:
		mandoc_vmsg(MANDOCERR_PAR_SKIP, man->parse, n->line, n->pos,
		    "%s after %s", man_macronames[n->tok],
		    man_macronames[n->parent->tok]);
		/* FALLTHROUGH */
	case MAN_MAX:
		/*
		 * Don't warn about this because it occurs in pod2man
		 * and would cause considerable (unfixable) warnage.
		 */
		man_node_delete(man, n);
		break;
	default:
		break;
	}
}