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minix/usr.bin/mdocml/dist/man_validate.c
Ben Gras 0c3983b25a update/fix manpage support 
. add bsd-style MLINKS to minix man set, restoring aliases
	  (e.g. man add64 -> int64)
	. update daily cron script to run makewhatis and restore makewhatis
	  in man Makefile (makedb), restores functionality of man -k
	. netbsd imports of man, mdocml, makewhatis, libutil, apropos
	. update man.conf with manpage locations, restoring man [-s] <section>
	. throws out some obsolete manpages
2011-09-28 15:24:15 +00:00

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/* $Vendor-Id: man_validate.c,v 1.57 2011/01/01 12:59:17 kristaps Exp $ */
/*
* Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#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 "mandoc.h"
#include "libman.h"
#include "libmandoc.h"
#define CHKARGS struct man *m, struct man_node *n
typedef int (*v_check)(CHKARGS);
struct man_valid {
v_check *pres;
v_check *posts;
};
static int check_bline(CHKARGS);
static int check_eq0(CHKARGS);
static int check_ft(CHKARGS);
static int check_le1(CHKARGS);
static int check_ge2(CHKARGS);
static int check_le5(CHKARGS);
static int check_par(CHKARGS);
static int check_part(CHKARGS);
static int check_root(CHKARGS);
static int check_sec(CHKARGS);
static int check_text(CHKARGS);
static int check_title(CHKARGS);
static int post_AT(CHKARGS);
static int post_fi(CHKARGS);
static int post_nf(CHKARGS);
static int post_TH(CHKARGS);
static int post_UC(CHKARGS);
static v_check posts_at[] = { post_AT, NULL };
static v_check posts_eq0[] = { check_eq0, NULL };
static v_check posts_fi[] = { check_eq0, post_fi, NULL };
static v_check posts_le1[] = { check_le1, NULL };
static v_check posts_ft[] = { check_ft, NULL };
static v_check posts_nf[] = { check_eq0, post_nf, NULL };
static v_check posts_par[] = { check_par, NULL };
static v_check posts_part[] = { check_part, NULL };
static v_check posts_sec[] = { check_sec, NULL };
static v_check posts_th[] = { check_ge2, check_le5, check_title, post_TH, NULL };
static v_check posts_uc[] = { post_UC, NULL };
static v_check pres_bline[] = { check_bline, NULL };
static const struct man_valid man_valids[MAN_MAX] = {
{ NULL, posts_eq0 }, /* br */
{ pres_bline, posts_th }, /* TH */
{ pres_bline, posts_sec }, /* SH */
{ pres_bline, posts_sec }, /* SS */
{ pres_bline, posts_par }, /* TP */
{ pres_bline, posts_par }, /* LP */
{ pres_bline, posts_par }, /* PP */
{ pres_bline, posts_par }, /* P */
{ pres_bline, posts_par }, /* IP */
{ pres_bline, posts_par }, /* HP */
{ NULL, NULL }, /* SM */
{ NULL, NULL }, /* SB */
{ NULL, NULL }, /* BI */
{ NULL, NULL }, /* IB */
{ NULL, NULL }, /* BR */
{ NULL, NULL }, /* RB */
{ NULL, NULL }, /* R */
{ NULL, NULL }, /* B */
{ NULL, NULL }, /* I */
{ NULL, NULL }, /* IR */
{ NULL, NULL }, /* RI */
{ NULL, posts_eq0 }, /* na */ /* FIXME: should warn only. */
{ NULL, posts_le1 }, /* sp */ /* FIXME: should warn only. */
{ pres_bline, posts_nf }, /* nf */
{ pres_bline, posts_fi }, /* fi */
{ NULL, NULL }, /* RE */
{ NULL, posts_part }, /* RS */
{ NULL, NULL }, /* DT */
{ NULL, posts_uc }, /* UC */
{ NULL, NULL }, /* PD */
{ NULL, posts_at }, /* AT */
{ NULL, NULL }, /* in */
{ NULL, posts_ft }, /* ft */
};
int
man_valid_pre(struct man *m, struct man_node *n)
{
v_check *cp;
switch (n->type) {
case (MAN_TEXT):
/* FALLTHROUGH */
case (MAN_ROOT):
/* FALLTHROUGH */
case (MAN_TBL):
return(1);
default:
break;
}
if (NULL == (cp = man_valids[n->tok].pres))
return(1);
for ( ; *cp; cp++)
if ( ! (*cp)(m, n))
return(0);
return(1);
}
int
man_valid_post(struct man *m)
{
v_check *cp;
if (MAN_VALID & m->last->flags)
return(1);
m->last->flags |= MAN_VALID;
switch (m->last->type) {
case (MAN_TEXT):
return(check_text(m, m->last));
case (MAN_ROOT):
return(check_root(m, m->last));
case (MAN_TBL):
return(1);
default:
break;
}
if (NULL == (cp = man_valids[m->last->tok].posts))
return(1);
for ( ; *cp; cp++)
if ( ! (*cp)(m, m->last))
return(0);
return(1);
}
static int
check_root(CHKARGS)
{
if (MAN_BLINE & m->flags)
man_nmsg(m, n, MANDOCERR_SCOPEEXIT);
else if (MAN_ELINE & m->flags)
man_nmsg(m, n, MANDOCERR_SCOPEEXIT);
m->flags &= ~MAN_BLINE;
m->flags &= ~MAN_ELINE;
if (NULL == m->first->child) {
man_nmsg(m, n, MANDOCERR_NODOCBODY);
return(0);
} else if (NULL == m->meta.title) {
man_nmsg(m, n, MANDOCERR_NOTITLE);
/*
* If a title hasn't been set, do so now (by
* implication, date and section also aren't set).
*/
m->meta.title = mandoc_strdup("unknown");
m->meta.date = time(NULL);
m->meta.msec = mandoc_strdup("1");
}
return(1);
}
static int
check_title(CHKARGS)
{
const char *p;
assert(n->child);
/* FIXME: is this sufficient? */
if ('\0' == *n->child->string) {
man_nmsg(m, n, MANDOCERR_SYNTARGCOUNT);
return(0);
}
for (p = n->child->string; '\0' != *p; p++)
/* Only warn about this once... */
if (isalpha((u_char)*p) && ! isupper((u_char)*p)) {
man_nmsg(m, n, MANDOCERR_UPPERCASE);
break;
}
return(1);
}
static int
check_text(CHKARGS)
{
char *p;
int pos, c;
size_t sz;
for (p = n->string, pos = n->pos + 1; *p; p++, pos++) {
sz = strcspn(p, "\t\\");
p += (int)sz;
if ('\0' == *p)
break;
pos += (int)sz;
if ('\t' == *p) {
if (MAN_LITERAL & m->flags)
continue;
if (man_pmsg(m, n->line, pos, MANDOCERR_BADTAB))
continue;
return(0);
}
/* Check the special character. */
c = mandoc_special(p);
if (c) {
p += c - 1;
pos += c - 1;
} else
man_pmsg(m, n->line, pos, MANDOCERR_BADESCAPE);
}
return(1);
}
#define INEQ_DEFINE(x, ineq, name) \
static int \
check_##name(CHKARGS) \
{ \
if (n->nchild ineq (x)) \
return(1); \
man_vmsg(m, MANDOCERR_SYNTARGCOUNT, n->line, n->pos, \
"line arguments %s %d (have %d)", \
#ineq, (x), n->nchild); \
return(0); \
}
INEQ_DEFINE(0, ==, eq0)
INEQ_DEFINE(1, <=, le1)
INEQ_DEFINE(2, >=, ge2)
INEQ_DEFINE(5, <=, le5)
static int
check_ft(CHKARGS)
{
char *cp;
int ok;
if (0 == n->nchild)
return(1);
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) {
man_vmsg(m, MANDOCERR_BADFONT,
n->line, n->pos, "%s", cp);
*cp = '\0';
}
if (1 < n->nchild)
man_vmsg(m, MANDOCERR_ARGCOUNT, n->line, n->pos,
"want one child (have %d)", n->nchild);
return(1);
}
static int
check_sec(CHKARGS)
{
if (MAN_HEAD == n->type && 0 == n->nchild) {
man_nmsg(m, n, MANDOCERR_SYNTARGCOUNT);
return(0);
} else if (MAN_BODY == n->type && 0 == n->nchild)
man_nmsg(m, n, MANDOCERR_NOBODY);
return(1);
}
static int
check_part(CHKARGS)
{
if (MAN_BODY == n->type && 0 == n->nchild)
man_nmsg(m, n, MANDOCERR_NOBODY);
return(1);
}
static int
check_par(CHKARGS)
{
if (MAN_BODY == n->type)
switch (n->tok) {
case (MAN_IP):
/* FALLTHROUGH */
case (MAN_HP):
/* FALLTHROUGH */
case (MAN_TP):
/* Body-less lists are ok. */
break;
default:
if (0 == n->nchild)
man_nmsg(m, n, MANDOCERR_NOBODY);
break;
}
if (MAN_HEAD == n->type)
switch (n->tok) {
case (MAN_PP):
/* FALLTHROUGH */
case (MAN_P):
/* FALLTHROUGH */
case (MAN_LP):
if (n->nchild)
man_nmsg(m, n, MANDOCERR_ARGSLOST);
break;
default:
break;
}
return(1);
}
static int
check_bline(CHKARGS)
{
assert( ! (MAN_ELINE & m->flags));
if (MAN_BLINE & m->flags) {
man_nmsg(m, n, MANDOCERR_SYNTLINESCOPE);
return(0);
}
return(1);
}
static int
post_TH(CHKARGS)
{
if (m->meta.title)
free(m->meta.title);
if (m->meta.vol)
free(m->meta.vol);
if (m->meta.source)
free(m->meta.source);
if (m->meta.msec)
free(m->meta.msec);
if (m->meta.rawdate)
free(m->meta.rawdate);
m->meta.title = m->meta.vol = m->meta.rawdate =
m->meta.msec = m->meta.source = NULL;
m->meta.date = 0;
/* ->TITLE<- MSEC DATE SOURCE VOL */
n = n->child;
assert(n);
m->meta.title = mandoc_strdup(n->string);
/* TITLE ->MSEC<- DATE SOURCE VOL */
n = n->next;
assert(n);
m->meta.msec = mandoc_strdup(n->string);
/* TITLE MSEC ->DATE<- SOURCE VOL */
/*
* Try to parse the date. If this works, stash the epoch (this
* is optimal because we can reformat it in the canonical form).
* If it doesn't parse, isn't specified at all, or is an empty
* string, then use the current date.
*/
n = n->next;
if (n && n->string && *n->string) {
m->meta.date = mandoc_a2time
(MTIME_ISO_8601, n->string);
if (0 == m->meta.date) {
man_nmsg(m, n, MANDOCERR_BADDATE);
m->meta.rawdate = mandoc_strdup(n->string);
}
} else
m->meta.date = time(NULL);
/* TITLE MSEC DATE ->SOURCE<- VOL */
if (n && (n = n->next))
m->meta.source = mandoc_strdup(n->string);
/* TITLE MSEC DATE SOURCE ->VOL<- */
if (n && (n = n->next))
m->meta.vol = mandoc_strdup(n->string);
/*
* Remove the `TH' node after we've processed it for our
* meta-data.
*/
man_node_delete(m, m->last);
return(1);
}
static int
post_nf(CHKARGS)
{
if (MAN_LITERAL & m->flags)
man_nmsg(m, n, MANDOCERR_SCOPEREP);
m->flags |= MAN_LITERAL;
return(1);
}
static int
post_fi(CHKARGS)
{
if ( ! (MAN_LITERAL & m->flags))
man_nmsg(m, n, MANDOCERR_NOSCOPE);
m->flags &= ~MAN_LITERAL;
return(1);
}
static int
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;
n = m->last->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];
}
if (m->meta.source)
free(m->meta.source);
m->meta.source = mandoc_strdup(p);
return(1);
}
static int
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];
}
if (m->meta.source)
free(m->meta.source);
m->meta.source = mandoc_strdup(p);
return(1);
}
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