551 lines
11 KiB
C
551 lines
11 KiB
C
/* $Id: man_validate.c,v 1.80 2012/01/03 15:16:24 kristaps Exp $ */
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/*
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* Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
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* Copyright (c) 2010 Ingo Schwarze <schwarze@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <sys/types.h>
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#include <assert.h>
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#include <ctype.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include "man.h"
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#include "mandoc.h"
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#include "libman.h"
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#include "libmandoc.h"
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#define CHKARGS struct man *m, struct man_node *n
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typedef int (*v_check)(CHKARGS);
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struct man_valid {
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v_check *pres;
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v_check *posts;
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};
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static int check_eq0(CHKARGS);
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static int check_eq2(CHKARGS);
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static int check_le1(CHKARGS);
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static int check_ge2(CHKARGS);
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static int check_le5(CHKARGS);
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static int check_par(CHKARGS);
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static int check_part(CHKARGS);
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static int check_root(CHKARGS);
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static void check_text(CHKARGS);
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static int post_AT(CHKARGS);
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static int post_vs(CHKARGS);
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static int post_fi(CHKARGS);
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static int post_ft(CHKARGS);
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static int post_nf(CHKARGS);
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static int post_sec(CHKARGS);
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static int post_TH(CHKARGS);
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static int post_UC(CHKARGS);
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static int pre_sec(CHKARGS);
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static v_check posts_at[] = { post_AT, NULL };
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static v_check posts_br[] = { post_vs, check_eq0, NULL };
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static v_check posts_eq0[] = { check_eq0, NULL };
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static v_check posts_eq2[] = { check_eq2, NULL };
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static v_check posts_fi[] = { check_eq0, post_fi, NULL };
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static v_check posts_ft[] = { post_ft, NULL };
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static v_check posts_nf[] = { check_eq0, post_nf, NULL };
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static v_check posts_par[] = { check_par, NULL };
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static v_check posts_part[] = { check_part, NULL };
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static v_check posts_sec[] = { post_sec, NULL };
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static v_check posts_sp[] = { post_vs, check_le1, NULL };
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static v_check posts_th[] = { check_ge2, check_le5, post_TH, NULL };
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static v_check posts_uc[] = { post_UC, NULL };
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static v_check pres_sec[] = { pre_sec, NULL };
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static const struct man_valid man_valids[MAN_MAX] = {
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{ NULL, posts_br }, /* br */
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{ NULL, posts_th }, /* TH */
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{ pres_sec, posts_sec }, /* SH */
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{ pres_sec, posts_sec }, /* SS */
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{ NULL, NULL }, /* TP */
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{ NULL, posts_par }, /* LP */
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{ NULL, posts_par }, /* PP */
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{ NULL, posts_par }, /* P */
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{ NULL, NULL }, /* IP */
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{ NULL, NULL }, /* HP */
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{ NULL, NULL }, /* SM */
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{ NULL, NULL }, /* SB */
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{ NULL, NULL }, /* BI */
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{ NULL, NULL }, /* IB */
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{ NULL, NULL }, /* BR */
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{ NULL, NULL }, /* RB */
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{ NULL, NULL }, /* R */
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{ NULL, NULL }, /* B */
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{ NULL, NULL }, /* I */
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{ NULL, NULL }, /* IR */
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{ NULL, NULL }, /* RI */
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{ NULL, posts_eq0 }, /* na */
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{ NULL, posts_sp }, /* sp */
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{ NULL, posts_nf }, /* nf */
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{ NULL, posts_fi }, /* fi */
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{ NULL, NULL }, /* RE */
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{ NULL, posts_part }, /* RS */
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{ NULL, NULL }, /* DT */
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{ NULL, posts_uc }, /* UC */
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{ NULL, NULL }, /* PD */
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{ NULL, posts_at }, /* AT */
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{ NULL, NULL }, /* in */
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{ NULL, posts_ft }, /* ft */
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{ NULL, posts_eq2 }, /* OP */
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};
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int
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man_valid_pre(struct man *m, struct man_node *n)
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{
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v_check *cp;
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switch (n->type) {
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case (MAN_TEXT):
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/* FALLTHROUGH */
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case (MAN_ROOT):
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/* FALLTHROUGH */
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case (MAN_EQN):
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/* FALLTHROUGH */
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case (MAN_TBL):
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return(1);
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default:
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break;
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}
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if (NULL == (cp = man_valids[n->tok].pres))
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return(1);
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for ( ; *cp; cp++)
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if ( ! (*cp)(m, n))
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return(0);
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return(1);
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}
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int
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man_valid_post(struct man *m)
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{
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v_check *cp;
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if (MAN_VALID & m->last->flags)
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return(1);
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m->last->flags |= MAN_VALID;
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switch (m->last->type) {
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case (MAN_TEXT):
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check_text(m, m->last);
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return(1);
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case (MAN_ROOT):
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return(check_root(m, m->last));
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case (MAN_EQN):
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/* FALLTHROUGH */
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case (MAN_TBL):
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return(1);
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default:
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break;
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}
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if (NULL == (cp = man_valids[m->last->tok].posts))
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return(1);
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for ( ; *cp; cp++)
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if ( ! (*cp)(m, m->last))
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return(0);
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return(1);
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}
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static int
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check_root(CHKARGS)
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{
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if (MAN_BLINE & m->flags)
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man_nmsg(m, n, MANDOCERR_SCOPEEXIT);
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else if (MAN_ELINE & m->flags)
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man_nmsg(m, n, MANDOCERR_SCOPEEXIT);
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m->flags &= ~MAN_BLINE;
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m->flags &= ~MAN_ELINE;
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if (NULL == m->first->child) {
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man_nmsg(m, n, MANDOCERR_NODOCBODY);
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return(0);
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} else if (NULL == m->meta.title) {
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man_nmsg(m, n, MANDOCERR_NOTITLE);
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/*
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* If a title hasn't been set, do so now (by
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* implication, date and section also aren't set).
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*/
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m->meta.title = mandoc_strdup("unknown");
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m->meta.msec = mandoc_strdup("1");
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m->meta.date = mandoc_normdate
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(m->parse, NULL, n->line, n->pos);
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}
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return(1);
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}
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static void
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check_text(CHKARGS)
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{
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char *cp, *p;
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if (MAN_LITERAL & m->flags)
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return;
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cp = n->string;
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for (p = cp; NULL != (p = strchr(p, '\t')); p++)
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man_pmsg(m, n->line, (int)(p - cp), MANDOCERR_BADTAB);
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}
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#define INEQ_DEFINE(x, ineq, name) \
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static int \
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check_##name(CHKARGS) \
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{ \
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if (n->nchild ineq (x)) \
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return(1); \
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mandoc_vmsg(MANDOCERR_ARGCOUNT, m->parse, n->line, n->pos, \
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"line arguments %s %d (have %d)", \
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#ineq, (x), n->nchild); \
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return(1); \
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}
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INEQ_DEFINE(0, ==, eq0)
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INEQ_DEFINE(2, ==, eq2)
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INEQ_DEFINE(1, <=, le1)
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INEQ_DEFINE(2, >=, ge2)
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INEQ_DEFINE(5, <=, le5)
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static int
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post_ft(CHKARGS)
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{
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char *cp;
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int ok;
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if (0 == n->nchild)
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return(1);
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ok = 0;
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cp = n->child->string;
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switch (*cp) {
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case ('1'):
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/* FALLTHROUGH */
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case ('2'):
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/* FALLTHROUGH */
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case ('3'):
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/* FALLTHROUGH */
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case ('4'):
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/* FALLTHROUGH */
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case ('I'):
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/* FALLTHROUGH */
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case ('P'):
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/* FALLTHROUGH */
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case ('R'):
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if ('\0' == cp[1])
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ok = 1;
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break;
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case ('B'):
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if ('\0' == cp[1] || ('I' == cp[1] && '\0' == cp[2]))
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ok = 1;
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break;
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case ('C'):
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if ('W' == cp[1] && '\0' == cp[2])
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ok = 1;
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break;
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default:
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break;
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}
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if (0 == ok) {
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mandoc_vmsg
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(MANDOCERR_BADFONT, m->parse,
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n->line, n->pos, "%s", cp);
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*cp = '\0';
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}
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if (1 < n->nchild)
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mandoc_vmsg
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(MANDOCERR_ARGCOUNT, m->parse, n->line,
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n->pos, "want one child (have %d)",
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n->nchild);
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return(1);
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}
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static int
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pre_sec(CHKARGS)
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{
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if (MAN_BLOCK == n->type)
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m->flags &= ~MAN_LITERAL;
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return(1);
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}
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static int
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post_sec(CHKARGS)
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{
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if ( ! (MAN_HEAD == n->type && 0 == n->nchild))
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return(1);
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man_nmsg(m, n, MANDOCERR_SYNTARGCOUNT);
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return(0);
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}
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static int
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check_part(CHKARGS)
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{
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if (MAN_BODY == n->type && 0 == n->nchild)
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mandoc_msg(MANDOCERR_ARGCWARN, m->parse, n->line,
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n->pos, "want children (have none)");
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return(1);
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}
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static int
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check_par(CHKARGS)
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{
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switch (n->type) {
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case (MAN_BLOCK):
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if (0 == n->body->nchild)
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man_node_delete(m, n);
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break;
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case (MAN_BODY):
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if (0 == n->nchild)
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man_nmsg(m, n, MANDOCERR_IGNPAR);
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break;
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case (MAN_HEAD):
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if (n->nchild)
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man_nmsg(m, n, MANDOCERR_ARGSLOST);
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break;
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default:
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break;
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}
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return(1);
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}
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static int
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post_TH(CHKARGS)
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{
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const char *p;
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int line, pos;
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if (m->meta.title)
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free(m->meta.title);
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if (m->meta.vol)
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free(m->meta.vol);
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if (m->meta.source)
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free(m->meta.source);
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if (m->meta.msec)
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free(m->meta.msec);
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if (m->meta.date)
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free(m->meta.date);
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line = n->line;
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pos = n->pos;
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m->meta.title = m->meta.vol = m->meta.date =
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m->meta.msec = m->meta.source = NULL;
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/* ->TITLE<- MSEC DATE SOURCE VOL */
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n = n->child;
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if (n && n->string) {
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for (p = n->string; '\0' != *p; p++) {
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/* Only warn about this once... */
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if (isalpha((unsigned char)*p) &&
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! isupper((unsigned char)*p)) {
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man_nmsg(m, n, MANDOCERR_UPPERCASE);
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break;
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}
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}
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m->meta.title = mandoc_strdup(n->string);
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} else
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m->meta.title = mandoc_strdup("");
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/* TITLE ->MSEC<- DATE SOURCE VOL */
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if (n)
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n = n->next;
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if (n && n->string)
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m->meta.msec = mandoc_strdup(n->string);
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else
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m->meta.msec = mandoc_strdup("");
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/* TITLE MSEC ->DATE<- SOURCE VOL */
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if (n)
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n = n->next;
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if (n && n->string && '\0' != n->string[0]) {
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pos = n->pos;
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m->meta.date = mandoc_normdate
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(m->parse, n->string, line, pos);
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} else
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m->meta.date = mandoc_strdup("");
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/* TITLE MSEC DATE ->SOURCE<- VOL */
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if (n && (n = n->next))
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m->meta.source = mandoc_strdup(n->string);
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/* TITLE MSEC DATE SOURCE ->VOL<- */
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/* If missing, use the default VOL name for MSEC. */
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if (n && (n = n->next))
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m->meta.vol = mandoc_strdup(n->string);
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else if ('\0' != m->meta.msec[0] &&
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(NULL != (p = mandoc_a2msec(m->meta.msec))))
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m->meta.vol = mandoc_strdup(p);
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/*
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* Remove the `TH' node after we've processed it for our
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* meta-data.
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*/
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man_node_delete(m, m->last);
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return(1);
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}
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static int
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post_nf(CHKARGS)
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{
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if (MAN_LITERAL & m->flags)
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man_nmsg(m, n, MANDOCERR_SCOPEREP);
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m->flags |= MAN_LITERAL;
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return(1);
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}
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static int
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post_fi(CHKARGS)
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{
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if ( ! (MAN_LITERAL & m->flags))
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man_nmsg(m, n, MANDOCERR_WNOSCOPE);
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m->flags &= ~MAN_LITERAL;
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return(1);
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}
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static int
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post_UC(CHKARGS)
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{
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static const char * const bsd_versions[] = {
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"3rd Berkeley Distribution",
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"4th Berkeley Distribution",
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"4.2 Berkeley Distribution",
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"4.3 Berkeley Distribution",
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"4.4 Berkeley Distribution",
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};
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const char *p, *s;
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n = n->child;
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if (NULL == n || MAN_TEXT != n->type)
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p = bsd_versions[0];
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else {
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s = n->string;
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if (0 == strcmp(s, "3"))
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p = bsd_versions[0];
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else if (0 == strcmp(s, "4"))
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p = bsd_versions[1];
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else if (0 == strcmp(s, "5"))
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p = bsd_versions[2];
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else if (0 == strcmp(s, "6"))
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p = bsd_versions[3];
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else if (0 == strcmp(s, "7"))
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p = bsd_versions[4];
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else
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p = bsd_versions[0];
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}
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if (m->meta.source)
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free(m->meta.source);
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m->meta.source = mandoc_strdup(p);
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return(1);
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}
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static int
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post_AT(CHKARGS)
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{
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static const char * const unix_versions[] = {
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"7th Edition",
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"System III",
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"System V",
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"System V Release 2",
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};
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const char *p, *s;
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struct man_node *nn;
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n = n->child;
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if (NULL == n || MAN_TEXT != n->type)
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p = unix_versions[0];
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else {
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s = n->string;
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if (0 == strcmp(s, "3"))
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p = unix_versions[0];
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else if (0 == strcmp(s, "4"))
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p = unix_versions[1];
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else if (0 == strcmp(s, "5")) {
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nn = n->next;
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if (nn && MAN_TEXT == nn->type && nn->string[0])
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p = unix_versions[3];
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else
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p = unix_versions[2];
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} else
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p = unix_versions[0];
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}
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if (m->meta.source)
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free(m->meta.source);
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m->meta.source = mandoc_strdup(p);
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return(1);
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}
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static int
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post_vs(CHKARGS)
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{
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/*
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* Don't warn about this because it occurs in pod2man and would
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* cause considerable (unfixable) warnage.
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*/
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if (NULL == n->prev && MAN_ROOT == n->parent->type)
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man_node_delete(m, n);
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return(1);
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}
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