/* $Id$ */
/*
* Copyright (c) 2011,2014,2015,2017-2019 Ingo Schwarze <schwarze@openbsd.org>
* Copyright (c) 2011 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 AUTHORS DISCLAIM ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS 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 <sys/stat.h>
#include <ctype.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mandoc_aux.h"
#include "mandoc.h"
#include "manconf.h"
static void manconf_file(struct manconf *, const char *, int);
static void manpath_add(struct manpaths *, const char *, char);
static void manpath_parseline(struct manpaths *, char *, char);
void
manconf_parse(struct manconf *conf, const char *file, char *pend, char *pbeg)
{
int use_path_from_file = 1;
/* Always prepend -m. */
manpath_parseline(&conf->manpath, pbeg, 'm');
if (pend != NULL && *pend != '\0') {
/* If -M is given, it overrides everything else. */
manpath_parseline(&conf->manpath, pend, 'M');
use_path_from_file = 0;
pbeg = pend = NULL;
} else if ((pbeg = getenv("MANPATH")) == NULL || *pbeg == '\0') {
/* No MANPATH; use man.conf(5) only. */
pbeg = pend = NULL;
} else if (*pbeg == ':') {
/* Prepend man.conf(5) to MANPATH. */
pend = pbeg + 1;
pbeg = NULL;
} else if ((pend = strstr(pbeg, "::")) != NULL) {
/* Insert man.conf(5) into MANPATH. */
*pend = '\0';
pend += 2;
} else if (pbeg[strlen(pbeg) - 1] == ':') {
/* Append man.conf(5) to MANPATH. */
pend = NULL;
} else {
/* MANPATH overrides man.conf(5) completely. */
use_path_from_file = 0;
pend = NULL;
}
manpath_parseline(&conf->manpath, pbeg, '\0');
if (file == NULL)
file = MAN_CONF_FILE;
manconf_file(conf, file, use_path_from_file);
manpath_parseline(&conf->manpath, pend, '\0');
}
void
manpath_base(struct manpaths *dirs)
{
char path_base[] = MANPATH_BASE;
manpath_parseline(dirs, path_base, '\0');
}
/*
* Parse a FULL pathname from a colon-separated list of arrays.
*/
static void
manpath_parseline(struct manpaths *dirs, char *path, char option)
{
char *dir;
if (NULL == path)
return;
for (dir = strtok(path, ":"); dir; dir = strtok(NULL, ":"))
manpath_add(dirs, dir, option);
}
/*
* Add a directory to the array, ignoring bad directories.
* Grow the array one-by-one for simplicity's sake.
*/
static void
manpath_add(struct manpaths *dirs, const char *dir, char option)
{
char buf[PATH_MAX];
struct stat sb;
char *cp;
size_t i;
if ((cp = realpath(dir, buf)) == NULL)
goto fail;
for (i = 0; i < dirs->sz; i++)
if (strcmp(dirs->paths[i], dir) == 0)
return;
if (stat(cp, &sb) == -1)
goto fail;
dirs->paths = mandoc_reallocarray(dirs->paths,
dirs->sz + 1, sizeof(*dirs->paths));
dirs->paths[dirs->sz++] = mandoc_strdup(cp);
return;
fail:
if (option != '\0')
mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0,
"-%c %s: %s", option, dir, strerror(errno));
}
void
manconf_free(struct manconf *conf)
{
size_t i;
for (i = 0; i < conf->manpath.sz; i++)
free(conf->manpath.paths[i]);
free(conf->manpath.paths);
free(conf->output.includes);
free(conf->output.man);
free(conf->output.paper);
free(conf->output.style);
}
static void
manconf_file(struct manconf *conf, const char *file, int use_path_from_file)
{
const char *const toks[] = { "manpath", "output" };
char manpath_default[] = MANPATH_DEFAULT;
FILE *stream;
char *line, *cp, *ep;
size_t linesz, tok, toklen;
ssize_t linelen;
if ((stream = fopen(file, "r")) == NULL)
goto out;
line = NULL;
linesz = 0;
while ((linelen = getline(&line, &linesz, stream)) != -1) {
cp = line;
ep = cp + linelen - 1;
while (ep > cp && isspace((unsigned char)*ep))
*ep-- = '\0';
while (isspace((unsigned char)*cp))
cp++;
if (cp == ep || *cp == '#')
continue;
for (tok = 0; tok < sizeof(toks)/sizeof(toks[0]); tok++) {
toklen = strlen(toks[tok]);
if (cp + toklen < ep &&
isspace((unsigned char)cp[toklen]) &&
strncmp(cp, toks[tok], toklen) == 0) {
cp += toklen;
while (isspace((unsigned char)*cp))
cp++;
break;
}
}
switch (tok) {
case 0: /* manpath */
if (use_path_from_file)
manpath_add(&conf->manpath, cp, '\0');
*manpath_default = '\0';
break;
case 1: /* output */
manconf_output(&conf->output, cp, 1);
break;
default:
break;
}
}
free(line);
fclose(stream);
out:
if (use_path_from_file && *manpath_default != '\0')
manpath_parseline(&conf->manpath, manpath_default, '\0');
}
int
manconf_output(struct manoutput *conf, const char *cp, int fromfile)
{
const char *const toks[] = {
/* Tokens requiring an argument. */
"includes", "man", "paper", "style", "indent", "width",
"outfilename", "tagfilename",
/* Token taking an optional argument. */
"tag",
/* Tokens not taking arguments. */
"fragment", "mdoc", "noval", "toc"
};
const size_t ntoks = sizeof(toks) / sizeof(toks[0]);
const char *errstr;
char *oldval;
size_t len, tok;
for (tok = 0; tok < ntoks; tok++) {
len = strlen(toks[tok]);
if (strncmp(cp, toks[tok], len) == 0 &&
strchr(" = ", cp[len]) != NULL) {
cp += len;
if (*cp == '=')
cp++;
while (isspace((unsigned char)*cp))
cp++;
break;
}
}
if (tok < 8 && *cp == '\0') {
mandoc_msg(MANDOCERR_BADVAL_MISS, 0, 0, "-O %s=?", toks[tok]);
return -1;
}
if (tok > 8 && tok < ntoks && *cp != '\0') {
mandoc_msg(MANDOCERR_BADVAL, 0, 0, "-O %s=%s", toks[tok], cp);
return -1;
}
switch (tok) {
case 0:
if (conf->includes != NULL) {
oldval = mandoc_strdup(conf->includes);
break;
}
conf->includes = mandoc_strdup(cp);
return 0;
case 1:
if (conf->man != NULL) {
oldval = mandoc_strdup(conf->man);
break;
}
conf->man = mandoc_strdup(cp);
return 0;
case 2:
if (conf->paper != NULL) {
oldval = mandoc_strdup(conf->paper);
break;
}
conf->paper = mandoc_strdup(cp);
return 0;
case 3:
if (conf->style != NULL) {
oldval = mandoc_strdup(conf->style);
break;
}
conf->style = mandoc_strdup(cp);
return 0;
case 4:
if (conf->indent) {
mandoc_asprintf(&oldval, "%zu", conf->indent);
break;
}
conf->indent = strtonum(cp, 0, 1000, &errstr);
if (errstr == NULL)
return 0;
mandoc_msg(MANDOCERR_BADVAL_BAD, 0, 0,
"-O indent=%s is %s", cp, errstr);
return -1;
case 5:
if (conf->width) {
mandoc_asprintf(&oldval, "%zu", conf->width);
break;
}
conf->width = strtonum(cp, 1, 1000, &errstr);
if (errstr == NULL)
return 0;
mandoc_msg(MANDOCERR_BADVAL_BAD, 0, 0,
"-O width=%s is %s", cp, errstr);
return -1;
case 6:
if (conf->outfilename != NULL) {
oldval = mandoc_strdup(conf->outfilename);
break;
}
conf->outfilename = mandoc_strdup(cp);
return 0;
case 7:
if (conf->tagfilename != NULL) {
oldval = mandoc_strdup(conf->tagfilename);
break;
}
conf->tagfilename = mandoc_strdup(cp);
return 0;
/*
* If the index of the following token changes,
* do not forget to adjust the range check above the switch.
*/
case 8:
if (conf->tag != NULL) {
oldval = mandoc_strdup(conf->tag);
break;
}
conf->tag = mandoc_strdup(cp);
return 0;
case 9:
conf->fragment = 1;
return 0;
case 10:
conf->mdoc = 1;
return 0;
case 11:
conf->noval = 1;
return 0;
case 12:
conf->toc = 1;
return 0;
default:
mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0, "-O %s", cp);
return -1;
}
if (fromfile) {
free(oldval);
return 0;
} else {
mandoc_msg(MANDOCERR_BADVAL_DUPE, 0, 0,
"-O %s=%s: already set to %s", toks[tok], cp, oldval);
free(oldval);
return -1;
}
}
