/* $Id$ */
/*
* Copyright (c) 2011, 2014, 2015 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>
#if HAVE_ERR
#include <err.h>
#endif
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mandoc_aux.h"
#include "manconf.h"
#if !HAVE_MANPATH
static void manconf_file(struct manconf *, const char *);
#endif
static void manpath_add(struct manpaths *, const char *, int);
static void manpath_parseline(struct manpaths *, char *, int);
void
manconf_parse(struct manconf *conf, const char *file,
char *defp, char *auxp)
{
#if HAVE_MANPATH
char cmd[(PATH_MAX * 3) + 20];
FILE *stream;
char *buf;
size_t sz, bsz;
strlcpy(cmd, "manpath", sizeof(cmd));
if (file) {
strlcat(cmd, " -C ", sizeof(cmd));
strlcat(cmd, file, sizeof(cmd));
}
if (auxp) {
strlcat(cmd, " -m ", sizeof(cmd));
strlcat(cmd, auxp, sizeof(cmd));
}
if (defp) {
strlcat(cmd, " -M ", sizeof(cmd));
strlcat(cmd, defp, sizeof(cmd));
}
/* Open manpath(1). Ignore errors. */
stream = popen(cmd, "r");
if (NULL == stream)
return;
buf = NULL;
bsz = 0;
/* Read in as much output as we can. */
do {
buf = mandoc_realloc(buf, bsz + 1024);
sz = fread(buf + bsz, 1, 1024, stream);
bsz += sz;
} while (sz > 0);
if ( ! ferror(stream) && feof(stream) &&
bsz && '\n' == buf[bsz - 1]) {
buf[bsz - 1] = '\0';
manpath_parseline(&conf->manpath, buf, 1);
}
free(buf);
pclose(stream);
#else
char *insert;
/* Always prepend -m. */
manpath_parseline(&conf->manpath, auxp, 1);
/* If -M is given, it overrides everything else. */
if (NULL != defp) {
manpath_parseline(&conf->manpath, defp, 1);
return;
}
/* MANPATH and man.conf(5) cooperate. */
defp = getenv("MANPATH");
if (NULL == file)
file = MAN_CONF_FILE;
/* No MANPATH; use man.conf(5) only. */
if (NULL == defp || '\0' == defp[0]) {
manconf_file(conf, file);
return;
}
/* Prepend man.conf(5) to MANPATH. */
if (':' == defp[0]) {
manconf_file(conf, file);
manpath_parseline(&conf->manpath, defp, 0);
return;
}
/* Append man.conf(5) to MANPATH. */
if (':' == defp[strlen(defp) - 1]) {
manpath_parseline(&conf->manpath, defp, 0);
manconf_file(conf, file);
return;
}
/* Insert man.conf(5) into MANPATH. */
insert = strstr(defp, "::");
if (NULL != insert) {
*insert++ = '\0';
manpath_parseline(&conf->manpath, defp, 0);
manconf_file(conf, file);
manpath_parseline(&conf->manpath, insert + 1, 0);
return;
}
/* MANPATH overrides man.conf(5) completely. */
manpath_parseline(&conf->manpath, defp, 0);
#endif
}
/*
* Parse a FULL pathname from a colon-separated list of arrays.
*/
static void
manpath_parseline(struct manpaths *dirs, char *path, int complain)
{
char *dir;
if (NULL == path)
return;
for (dir = strtok(path, ":"); dir; dir = strtok(NULL, ":"))
manpath_add(dirs, dir, complain);
}
/*
* 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, int complain)
{
char buf[PATH_MAX];
struct stat sb;
char *cp;
size_t i;
if (NULL == (cp = realpath(dir, buf))) {
if (complain)
warn("manpath: %s", dir);
return;
}
for (i = 0; i < dirs->sz; i++)
if (0 == strcmp(dirs->paths[i], dir))
return;
if (stat(cp, &sb) == -1) {
if (complain)
warn("manpath: %s", dir);
return;
}
dirs->paths = mandoc_reallocarray(dirs->paths,
dirs->sz + 1, sizeof(char *));
dirs->paths[dirs->sz++] = mandoc_strdup(cp);
}
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);
}
#if !HAVE_MANPATH
static void
manconf_file(struct manconf *conf, const char *file)
{
const char *const toks[] = { "manpath", "output", "_whatdb" };
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 2: /* _whatdb */
while (ep > cp && ep[-1] != '/')
ep--;
if (ep == cp)
continue;
*ep = '\0';
/* FALLTHROUGH */
case 0: /* manpath */
manpath_add(&conf->manpath, cp, 0);
*manpath_default = '\0';
break;
case 1: /* output */
manconf_output(&conf->output, cp);
break;
default:
break;
}
}
free(line);
fclose(stream);
out:
if (*manpath_default != '\0')
manpath_parseline(&conf->manpath, manpath_default, 0);
}
#endif
void
manconf_output(struct manoutput *conf, const char *cp)
{
const char *const toks[] = {
"includes", "man", "paper", "style",
"indent", "width", "fragment", "mdoc"
};
size_t len, tok;
for (tok = 0; tok < sizeof(toks)/sizeof(toks[0]); tok++) {
len = strlen(toks[tok]);
if ( ! strncmp(cp, toks[tok], len) &&
strchr(" = ", cp[len]) != NULL) {
cp += len;
if (*cp == '=')
cp++;
while (isspace((unsigned char)*cp))
cp++;
break;
}
}
if (tok < 6 && *cp == '\0')
return;
switch (tok) {
case 0:
if (conf->includes == NULL)
conf->includes = mandoc_strdup(cp);
break;
case 1:
if (conf->man == NULL)
conf->man = mandoc_strdup(cp);
break;
case 2:
if (conf->paper == NULL)
conf->paper = mandoc_strdup(cp);
break;
case 3:
if (conf->style == NULL)
conf->style = mandoc_strdup(cp);
break;
case 4:
if (conf->indent == 0)
conf->indent = strtonum(cp, 0, 1000, NULL);
break;
case 5:
if (conf->width == 0)
conf->width = strtonum(cp, 58, 1000, NULL);
break;
case 6:
conf->fragment = 1;
break;
case 7:
conf->mdoc = 1;
break;
default:
break;
}
}
