/*
 * Copyright (c) 1989 Jan-Simon Pendry
 * Copyright (c) 1989 Imperial College of Science, Technology & Medicine
 * Copyright (c) 1989, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	from: @(#)fsi_util.c	8.1 (Berkeley) 6/6/93
 *	$Id: fsi_util.c,v 1.8 2013/04/17 15:55:46 deraadt Exp $
 */

#include "../fsinfo/fsinfo.h"

/*
 * Lots of ways of reporting errors...
 */
void error(s, s1, s2, s3, s4)
char *s, *s1, *s2, *s3, *s4;
{
	col_cleanup(0);
	fprintf(stderr, "%s: Error, ", __progname);
	fprintf(stderr, s, s1, s2, s3, s4);
	fputc('\n', stderr);
	errors++;
}

void lerror(l, s, s1, s2, s3, s4)
ioloc *l;
char *s, *s1, *s2, *s3, *s4;
{
	col_cleanup(0);
	fprintf(stderr, "%s:%d: ", l->i_file, l->i_line);
	fprintf(stderr, s, s1, s2, s3, s4);
	fputc('\n', stderr);
	errors++;
}

void lwarning(l, s, s1, s2, s3, s4)
ioloc *l;
char *s, *s1, *s2, *s3, *s4;
{
	col_cleanup(0);
	fprintf(stderr, "%s:%d: ", l->i_file, l->i_line);
	fprintf(stderr, s, s1, s2, s3, s4);
	fputc('\n', stderr);
	
}

void fatal(s, s1, s2, s3, s4)
char *s, *s1, *s2, *s3, *s4;
{
	col_cleanup(1);
	fprintf(stderr, "%s: Fatal, ", __progname);
	fprintf(stderr, s, s1, s2, s3, s4);
	fputc('\n', stderr);
	exit(1);
}

#if !(defined(__NetBSD__) || defined(__OpenBSD__))
/*
 * Dup a string
 */
char *strdup(s)
char *s;
{
	int len = strlen(s);
	char *sp = (char *) xmalloc(len+1);

	bcopy(s, sp, len);
	sp[len] = 0;

	return sp;
}
#endif /* !(defined(__NetBSD__) || defined(__OpenBSD)) */

/*
 * Debug log
 */
void log(s, s1, s2, s3, s4)
char *s, *s1, *s2, *s3, *s4;
{
	if (verbose > 0) {
		fputc('#', stdout);
		fprintf(stdout, "%s: ", __progname);
		fprintf(stdout, s, s1, s2, s3, s4);
		putc('\n', stdout);
	}
}

void info_hdr(ef, info)
FILE *ef;
char *info;
{
	fprintf(ef, "# *** NOTE: This file contains %s info\n", info);
}

void gen_hdr(ef, hn)
FILE *ef;
char *hn;
{
	fprintf(ef, "# *** NOTE: Only for use on %s\n", hn);
}

static void make_banner(fp)
FILE *fp;
{
	time_t t = time(NULL);
	char *ctime(), *cp = ctime(&t);

	fprintf(fp,
"\
# *** This file was automatically generated -- DO NOT EDIT HERE ***\n\
# \"%s\" run by %s@%s on %s\
#\n\
",
	__progname, username, hostname, cp);
}

static int show_range = 10;
static int col = 0;
static int total_shown = 0;
static int total_mmm = 8;

static int col_output(len)
int len;
{
	int wrapped = 0;
	col += len;
	if (col > 77) {
		fputc('\n', stdout);
		col = len;
		wrapped = 1;
	}
	return wrapped;
}

static void show_total()
{
	if (total_mmm != -show_range+1) {
		char n[8];
		int len;
		if (total_mmm < 0)
			fputc('*', stdout);
		snprintf(n, sizeof(n), "%d", total_shown);
		len = strlen(n);
		if (col_output(len))
			fputc(' ', stdout);
		fputs(n, stdout); fflush(stdout);
		total_mmm = -show_range;
	}
}

col_cleanup(eoj)
int eoj;
{
	if (verbose < 0) return;
	if (eoj) {
		show_total();
		fputs(")]", stdout);
	}
	if (col) {
		fputc('\n', stdout);
		col = 0;
	}
}

void show_new(msg)
char *msg;
{
	if (verbose < 0) return;
	total_shown++;
	if (total_mmm > show_range) {
		show_total();
	} else if (total_mmm == 0) {
		fputc('*', stdout); fflush(stdout);
		col += 1;
	}
	total_mmm++;
}

void show_area_being_processed(area, n)
char *area;
int n;
{
static char *last_area = 0;
	if (verbose < 0) return;
	if (last_area) {
		if (total_shown)
			show_total();
		fputs(")", stdout);
		col += 1;
	}
	if (!last_area || strcmp(area, last_area) != 0) {
		if (last_area) {
			col_cleanup(0);
			total_shown = 0;
			total_mmm = show_range+1;
		}
		(void) col_output(strlen(area)+2);
		fprintf(stdout, "[%s", area);
		last_area = area;
	}

	fputs(" (", stdout);
	col += 2;
	show_range = n;
	total_mmm = n + 1;

	fflush(stdout);
}

/*
 * Open a file with the given prefix and name
 */
FILE *pref_open(pref, hn, hdr, arg)
char *pref;
char *hn;
void (*hdr)();
char *arg;
{
	char p[MAXPATHLEN];
	FILE *ef;
	snprintf(p, sizeof(p), "%s%s", pref, hn);
	log("Writing %s info for %s to %s", pref, hn, p);
	ef = fopen(p, "w");
	if (ef) {
		(*hdr)(ef, arg);
		make_banner(ef, hn);
	} else {
		error("can't open %s for writing", p);
	}

	return ef;
}

int pref_close(fp)
FILE *fp;
{
	return fclose(fp) == 0;
}

/*
 * Determine where Amd would automount the host/volname pair
 */
void compute_automount_point(buf, buflen, hp, vn)
char *buf;
size_t buflen;
host *hp;
char *vn;
{
#ifdef AMD_USES_HOSTPATH
	snprintf(buf, buflen, "%s/%s%s", autodir, hp->h_hostpath, vn);
#else
	snprintf(buf, buflen, "%s/%s%s", autodir, hp->h_lochost, vn);
#endif
}

char *xcalloc(i, s)
int i;
int s;
{
	char *p = (char *) calloc(i, (unsigned) s);
	if (!p)
		fatal("Out of memory");
	return p;
}

char *xmalloc(i)
int i;
{
	char *p = (char *) malloc(i);
	if (!p)
		fatal("Out of memory");
	return p;
}

/*
 * Data constructors..
 */

automount *new_automount(name)
char *name;
{
	automount *ap = ALLOC(automount);
	ap->a_ioloc = current_location();
	ap->a_name = name;
	ap->a_volname = 0;
	ap->a_mount = 0;
	show_new("automount");
	return ap;
}

auto_tree *new_auto_tree(def, ap)
char *def;
qelem *ap;
{
	auto_tree *tp = ALLOC(auto_tree);
	tp->t_ioloc = current_location();
	tp->t_defaults = def;
	tp->t_mount = ap;
	show_new("auto_tree");
	return tp;
}

host *new_host()
{
	host *hp = ALLOC(host);
	hp->h_ioloc = current_location();
	hp->h_mask = 0;
	show_new("host");
	return hp;
}

void set_host(hp, k, v)
host *hp;
int k;
char *v;
{
	int m = 1 << k;
	if (hp->h_mask & m) {
		yyerror("host field \"%s\" already set", host_strings[k]);
		return;
	}

	hp->h_mask |= m;

	switch (k) {
	case HF_HOST: {
		char *p = strdup(v);
		dict_ent *de = dict_locate(dict_of_hosts, v);
		if (de)
			yyerror("duplicate host %s!", v);
		else
			dict_add(dict_of_hosts, v, (char *) hp);
		hp->h_hostname = v;
		domain_strip(p, hostname);
		if (strchr(p, '.') != 0)
			free(p);
		else
			hp->h_lochost = p;
	} break;
	case HF_CONFIG: {
		qelem *q;
		qelem *vq = (qelem *) v;
		hp->h_mask &= ~m;
		if (hp->h_config)
			q = hp->h_config;
		else
			q = hp->h_config = new_que();
		ins_que(vq, q->q_back);
	} break;
	case HF_ETHER: {
		qelem *q;
		qelem *vq = (qelem *) v;
		hp->h_mask &= ~m;
		if (hp->h_ether)
			q = hp->h_ether;
		else
			q = hp->h_ether = new_que();
		ins_que(vq, q->q_back);
	} break;
	case HF_ARCH: hp->h_arch = v; break;
	case HF_OS: hp->h_os = v; break;
	case HF_CLUSTER: hp->h_cluster = v; break;
	default: abort(); break;
	}
}

ether_if *new_ether_if()
{
	ether_if *ep = ALLOC(ether_if);
	ep->e_mask = 0;
	ep->e_ioloc = current_location();
	show_new("ether_if");
	return ep;
}

void set_ether_if(ep,k, v)
ether_if *ep;
int k;
char *v;
{
	int m = 1 << k;
	if (ep->e_mask & m) {
		yyerror("netif field \"%s\" already set", ether_if_strings[k]);
		return;
	}

	ep->e_mask |= m;

	switch (k) {
	case EF_INADDR: {
		if (inet_aton(v, &ep->e_inaddr) == 0)
			yyerror("malformed IP dotted quad: %s", v);
		free(v);
	} break;
	case EF_NETMASK: {
		u_int32_t nm = 0;
		if ((sscanf(v, "0x%x", &nm) == 1 || sscanf(v, "%x", &nm) == 1) && nm != 0)
			ep->e_netmask = htonl(nm);
		else
			yyerror("malformed netmask: %s", v);
		free(v);
	} break;
	case EF_HWADDR:
		ep->e_hwaddr = v;
		break;
	default: abort(); break;
	}
}

void set_disk_fs(dp, k, v)
disk_fs *dp;
int k;
char *v;
{
	int m = 1 << k;
	if (dp->d_mask & m) {
		yyerror("fs field \"%s\" already set", disk_fs_strings[k]);
		return;
	}

	dp->d_mask |= m;

	switch (k) {
	case DF_FSTYPE: dp->d_fstype = v; break;
	case DF_OPTS: dp->d_opts = v; break;
	case DF_DUMPSET: dp->d_dumpset = v; break;
	case DF_LOG: dp->d_log = v; break;
	case DF_PASSNO: dp->d_passno = atoi(v); free(v); break;
	case DF_FREQ: dp->d_freq = atoi(v); free(v); break;
	case DF_MOUNT: dp->d_mount = &((mount *) v)->m_q; break;
	default: abort(); break;
	}
}

disk_fs *new_disk_fs()
{
	disk_fs *dp = ALLOC(disk_fs);
	dp->d_ioloc = current_location();
	show_new("disk_fs");
	return dp;
}

void set_mount(mp, k, v)
mount *mp;
int k;
char *v;
{
	int m = 1 << k;
	if (mp->m_mask & m) {
		yyerror("mount tree field \"%s\" already set", mount_strings[k]);
		return;
	}

	mp->m_mask |= m;

	switch (k) {
	case DM_VOLNAME:
		dict_add(dict_of_volnames, v, (char *) mp);
		mp->m_volname = v;
		break;
	case DM_EXPORTFS:
		mp->m_exportfs = v;
		break;
	case DM_SEL:
		mp->m_sel = v;
		break;
	default: abort(); break;
	}
}

mount *new_mount()
{
	mount *fp = ALLOC(mount);
	fp->m_ioloc = current_location();
	show_new("mount");
	return fp;
}

void set_fsmount(fp, k, v)
fsmount *fp;
int k;
char *v;
{
	int m = 1 << k;
	if (fp->f_mask & m) {
		yyerror("mount field \"%s\" already set", fsmount_strings[k]);
		return;
	}

	fp->f_mask |= m;

	switch (k) {
	case FM_LOCALNAME: fp->f_localname = v; break;
	case FM_VOLNAME: fp->f_volname = v; break;
	case FM_FSTYPE: fp->f_fstype = v; break;
	case FM_OPTS: fp->f_opts = v; break;
	case FM_FROM: fp->f_from = v; break;
	default: abort(); break;
	}
}

fsmount *new_fsmount()
{
	fsmount *fp = ALLOC(fsmount);
	fp->f_ioloc = current_location();
	show_new("fsmount");
	return fp;
}

void init_que(q)
qelem *q;
{
	q->q_forw = q->q_back = q;
}

qelem *new_que()
{
	qelem *q = ALLOC(qelem);
	init_que(q);
	return q;
}

void ins_que(elem, pred)
qelem *elem, *pred;
{
	qelem *p;
	p = pred->q_forw;
	elem->q_back = pred;
	elem->q_forw = p;
	pred->q_forw = elem;
	p->q_back = elem;
}

void rem_que(elem)
qelem *elem;
{
	qelem *p, *p2;
	p = elem->q_forw;
	p2 = elem->q_back;

	p2->q_forw = p;
	p->q_back = p2;
}