/*      $NetBSD: fsi_util.c,v 1.1.1.3 2015/01/17 16:34:17 christos Exp $        */

/*
* Copyright (c) 1997-2014 Erez Zadok
* Copyright (c) 1989 Jan-Simon Pendry
* Copyright (c) 1989 Imperial College of Science, Technology & Medicine
* Copyright (c) 1989 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.
*
*
* File: am-utils/fsinfo/fsi_util.c
*
*/

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <am_defs.h>
#include <fsi_data.h>
#include <fsinfo.h>

/* static variables */
static int show_range = 10;
static int col = 0;
static int total_shown = 0;
static int total_mmm = 8;


static int
col_output(int len)
{
 int wrapped = 0;

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


static void
show_total(void)
{
 if (total_mmm != -show_range + 1) {
   char n[8];
   int len;

   if (total_mmm < 0)
     fputc('*', stdout);
   xsnprintf(n, sizeof(n), "%d", total_shown);
   len = strlen(n);
   if (col_output(len))
     fputc(' ', stdout);
   fputs(n, stdout);
   fflush(stdout);
   total_mmm = -show_range;
 }
}


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


/*
* Lots of ways of reporting errors...
*/
void
error(char *fmt, ...)
{
 va_list ap;

 va_start(ap, fmt);
 col_cleanup(0);
 fprintf(stderr, "%s: Error, ", progname);
 vfprintf(stderr, fmt, ap);
 fputc('\n', stderr);
 errors++;
 va_end(ap);
}


void
lerror(ioloc *l, char *fmt, ...)
{
 va_list ap;

 va_start(ap, fmt);
 col_cleanup(0);
 fprintf(stderr, "%s:%d: ", l->i_file, l->i_line);
 vfprintf(stderr, fmt, ap);
 fputc('\n', stderr);
 errors++;
 va_end(ap);
}


void
lwarning(ioloc *l, char *fmt, ...)
{
 va_list ap;

 va_start(ap, fmt);
 col_cleanup(0);
 fprintf(stderr, "%s:%d: ", l->i_file, l->i_line);
 vfprintf(stderr, fmt, ap);
 fputc('\n', stderr);
 va_end(ap);
}


void
fatal(char *fmt, ...)
{
 va_list ap;

 va_start(ap, fmt);
 col_cleanup(1);
 fprintf(stderr, "%s: Fatal, ", progname);
 vfprintf(stderr, fmt, ap);
 fputc('\n', stderr);
 va_end(ap);
 exit(1);
}


/*
* Debug log
*/
void
fsi_log(char *fmt, ...)
{
 va_list ap;

 if (verbose > 0) {
   va_start(ap, fmt);
   fputc('#', stdout);
   fprintf(stdout, "%s: ", progname);
   vfprintf(stdout, fmt, ap);
   putc('\n', stdout);
   va_end(ap);
 }
}


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


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


static void
make_banner(FILE *fp)
{
 time_t t = time((time_t *) NULL);
 char *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);
}


void
show_new(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(char *area, int n)
{
 static char *last_area = NULL;

 if (verbose < 0)
   return;
 if (last_area) {
   if (total_shown)
     show_total();
   fputs(")", stdout);
   col += 1;
 }

 if (!last_area || !STREQ(area, last_area)) {
   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(char *pref, char *hn, void (*hdr) (FILE *, char *), char *arg)
{
 char p[MAXPATHLEN];
 FILE *ef;

 xsnprintf(p, sizeof(p), "%s%s", pref, hn);
 fsi_log("Writing %s info for %s to %s", pref, hn, p);
 ef = fopen(p, "w");
 if (ef) {
   (*hdr) (ef, arg);
   make_banner(ef);
 } else {
   error("can't open %s for writing", p);
 }

 return ef;
}


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


/*
* Determine where Amd would automount the host/volname pair
*/
void
compute_automount_point(char *buf, size_t l, host *hp, char *vn)
{
 xsnprintf(buf, l, "%s/%s%s", autodir, hp->h_lochost, vn);
}


/*
* Data constructors..
*/
automount *
new_automount(char *name)
{
 automount *ap = CALLOC(struct automount);

 ap->a_ioloc = current_location();
 ap->a_name = name;
 ap->a_volname = NULL;
 ap->a_mount = NULL;
 ap->a_opts = NULL;
 show_new("automount");
 return ap;
}


auto_tree *
new_auto_tree(char *def, qelem *ap)
{
 auto_tree *tp = CALLOC(struct auto_tree);

 tp->t_ioloc = current_location();
 tp->t_defaults = def;
 tp->t_mount = ap;
 show_new("auto_tree");
 return tp;
}


host *
new_host(void)
{
 host *hp = CALLOC(struct host);

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


void
set_host(host *hp, int k, char *v)
{
 int m = 1 << k;

 if (hp->h_mask & m) {
   fsi_error("host field \"%s\" already set", host_strings[k]);
   return;
 }
 hp->h_mask |= m;

 switch (k) {

 case HF_HOST:{
     char *p = xstrdup(v);
     dict_ent *de = dict_locate(dict_of_hosts, v);

     if (de)
       fsi_error("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)
       XFREE(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(void)
{
 ether_if *ep = CALLOC(struct ether_if);

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


void
set_ether_if(ether_if *ep, int k, char *v)
{
 int m = 1 << k;

 if (ep->e_mask & m) {
   fsi_error("netif field \"%s\" already set", ether_if_strings[k]);
   return;
 }
 ep->e_mask |= m;

 switch (k) {

 case EF_INADDR:{
     ep->e_inaddr.s_addr = inet_addr(v);
     if ((int) ep->e_inaddr.s_addr == (int) INADDR_NONE)
       fsi_error("malformed IP dotted quad: %s", v);
     XFREE(v);
   }
   break;

 case EF_NETMASK:{
     u_long nm = 0;

     if ((sscanf(v, "0x%lx", &nm) == 1 || sscanf(v, "%lx", &nm) == 1) && nm != 0)
       ep->e_netmask = htonl(nm);
     else
       fsi_error("malformed netmask: %s", v);
     XFREE(v);
   }
   break;

 case EF_HWADDR:
   ep->e_hwaddr = v;
   break;

 default:
   abort();
   break;
 }
}


void
set_disk_fs(disk_fs *dp, int k, char *v)
{
 int m = 1 << k;

 if (dp->d_mask & m) {
   fsi_error("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);
   XFREE(v);
   break;

 case DF_FREQ:
   dp->d_freq = atoi(v);
   XFREE(v);
   break;

 case DF_MOUNT:
   dp->d_mount = &((fsi_mount *) v)->m_q;
   break;

 default:
   abort();
   break;
 }
}


disk_fs *
new_disk_fs(void)
{
 disk_fs *dp = CALLOC(struct disk_fs);

 dp->d_ioloc = current_location();
 show_new("disk_fs");
 return dp;
}


void
set_mount(fsi_mount *mp, int k, char *v)
{
 int m = 1 << k;

 if (mp->m_mask & m) {
   fsi_error("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;
 }
}


fsi_mount *
new_mount(void)
{
 fsi_mount *fp = CALLOC(struct fsi_mount);

 fp->m_ioloc = current_location();
 show_new("mount");
 return fp;
}


void
set_fsmount(fsmount *fp, int k, char *v)
{
 int m = 1 << k;

 if (fp->f_mask & m) {
   fsi_error("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;

 case FM_DIRECT:
   break;

 default:
   abort();
   break;
 }
}


fsmount *
new_fsmount(void)
{
 fsmount *fp = CALLOC(struct fsmount);

 fp->f_ioloc = current_location();
 show_new("fsmount");
 return fp;
}


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


qelem *
new_que(void)
{
 qelem *q = CALLOC(qelem);

 init_que(q);
 return q;
}


void
ins_que(qelem *elem, qelem *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(qelem *elem)
{
 qelem *p, *p2;

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

 p2->q_forw = p;
 p->q_back = p2;
}

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