/* $Header$
 *
 * This generates some useful reports.
 *
 *  (c) Copyright 1993 by the Massachusetts Institute of Technology.
 *  For copying and distribution information, please see the file
 *  <mit-copyright.h>.
 */

#include <mit-copyright.h>
#include <stdio.h>
#include <moira.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
EXEC SQL INCLUDE sqlca;

extern int errno;
char *whoami = "report.gen";
FILE *out = stdout;

struct user {
    char name[9];
    int uid;
    int status;
};
struct hash *users = NULL;
struct hash *kmaps = NULL;

main(argc, argv)
int argc;
char **argv;
{
    char *outf = NULL, outft[64], *p, buf[256];
    struct stat sb;
    struct timeval now;
    int flag1, flag2, i;
    struct hash *aliases = NULL;
    struct hash *nets = NULL;
    struct user *u;

    EXEC SQL BEGIN DECLARE SECTION;
    int id, sid, status, uid, ustatus, owner, creator, modby;
    char login[9];
    char name[65], vendor[33], model[33], os[33], addr[17];
    char location[17], owner_type[16];
    char schange[25], modtime[25], modwith[33], created[25];
    EXEC SQL END DECLARE SECTION;

#ifsql INGRES
    EXEC SQL CONNECT moira;
    EXEC SQL SET LOCKMODE SESSION WHERE LEVEL=TABLE, READLOCK=SHARED;
#endsql
#ifsql INFORMIX
    EXEC SQL DATABASE moira;
#endsql

    if (argc == 2) 
      {
	if (stat(argv[1], &sb) == 0) 
	  {
	    if (ModDiff(&flag1, "machine", sb.st_mtime) ||
		ModDiff(&flag2, "subnet", sb.st_mtime))
	      exit(MR_DATE);
	    if (flag1 < 0 && flag2 < 0) 
	      {
		fprintf(stderr, "File %s does not need to be rebuilt.\n",
			argv[1]);
		exit(MR_NO_CHANGE);
	      }
	  }
	outf = argv[1];
	sprintf(outft, "%s~", outf);
	if ((out = fopen(outft, "w")) == NULL) 
	  {
	    fprintf(stderr, "unable to open %s for output\n", outf);
	    exit(MR_OCONFIG);
	  }
      } else if (argc != 1) 
	{
	  fprintf(stderr, "usage: %s [outfile]\n", argv[0]);
	  exit(MR_ARGS);
	} else 
	  {
	    outf = NULL;
	  }
    
    EXEC SQL WHENEVER SQLERROR GOTO sqlerr;

    users = create_hash(12001);

    /* 
     * suck in user table
     */

    EXEC SQL SELECT modtime INTO :name FROM users WHERE users_id = 0;

    EXEC SQL DECLARE u_cursor CURSOR FOR
      SELECT login, uid, users_id, status
      FROM users;
    EXEC SQL OPEN u_cursor;
    
    while (1) 
      {
        EXEC SQL FETCH u_cursor INTO :login, :uid, :id, :ustatus;
	if (sqlca.sqlcode != 0) break;
	strtrim(login);
	u = (struct user *) malloc(sizeof(struct user));
	strcpy(u->name, login);
	u->uid = uid;
	u->status = ustatus;
	hash_store(users, id, u);
      }

    EXEC SQL CLOSE u_cursor;

    /*
     * suck in host alias table
     */

    EXEC SQL SELECT modtime INTO :name FROM machine WHERE mach_id = 0;
    
    gettimeofday(&now, NULL);
    
    fprintf(out, "# Moira host table dump generated at %s\n",
	    ctime(&now.tv_sec));

    EXEC SQL DECLARE y CURSOR FOR SELECT
      mach_id, name FROM hostalias;
    EXEC SQL OPEN y;

    aliases = create_hash(1001);
    while (1) 
      {
	EXEC SQL FETCH y INTO :id, :name;
	
	if (sqlca.sqlcode != 0) break;
	if (id == 0) continue;
	if (p = hash_lookup(aliases, id)) 
	  {
	    sprintf(buf, "%s,%s", p, name);
	    hash_update(aliases, id, strsave(buf));
	    free(p);
	  } else
	    hash_store(aliases, id, strsave(name));
      }

    EXEC SQL CLOSE y;

    
    /*
     * suck in network table
     */

    EXEC SQL SELECT modtime INTO :name FROM subnet WHERE snet_id = 0;

    EXEC SQL DECLARE n_cursor CURSOR FOR SELECT
      snet_id, name FROM subnet;
    EXEC SQL OPEN n_cursor;

    nets = create_hash(301);
    while (1) 
      {
	EXEC SQL FETCH n_cursor INTO :id, :name;
	
	if (sqlca.sqlcode != 0) break;
	if (id == 0) continue;
	hash_store(nets, id, strsave(name));
      }

    EXEC SQL CLOSE n_cursor;

    /*
     * dump machine table
     */


    EXEC SQL DECLARE x CURSOR FOR SELECT 
      name, mach_id, status, statuschange, vendor, model, os, address,  location, snet_id, owner_type, owner_id, modby, modtime, modwith, created, creator
      FROM machine;
    EXEC SQL OPEN x;

    while (1) 
      {
        EXEC SQL FETCH x INTO :name, :id, :status, :schange, :vendor, :model, :os, :addr, :location, :sid, :owner_type, :owner, :modby, :modtime, :modwith, :created, :creator;

	if (sqlca.sqlcode != 0) break;
	if (id == 0) continue;

	if (p = hash_lookup(aliases, id))
	  sprintf(buf, "%s,%s", name, p);
	else
	  strcpy(buf, name);

	fprintf(out, "HOST|%s|", buf);
	if(p = hash_lookup(nets, sid))
	  fprintf(out, "%s|", strtrim(p));
	else
	  if(sid == 0)
	    fprintf(out, "NONE|");
	  else
	    fprintf(out, "%d|", sid);
	   
	fprintf(out, "%s|%s|", strtrim(addr), 
		status == 3 ? "deleted" :
		status == 2 ? "none" : status == 1 ? "active" : status == 0 ?
		"reserved" : "unknown");
	
	fprintf(out, "%s|", strtrim(schange));
	fprintf(out, "%s|", strtrim(location));
	fprintf(out, "%s|", strtrim(vendor));
	fprintf(out, "%s|", strtrim(model));
	fprintf(out, "%s|", strtrim(os));
	
	print_user(strtrim(owner_type), owner);
	print_user("STRING", creator);
	fprintf(out, "%s|", strtrim(created));
	print_user("STRING", modby < 0 ? -modby : modby);

	fprintf(out, "%s|", strtrim(modtime));
	fprintf(out, "%s|", strtrim(modwith));
	fprintf(out, "\n");
      }

    EXEC SQL CLOSE x;
#ifsql INGRES
    EXEC SQL DISCONNECT;
#endsql
#ifsql INFORMIX
    EXEC SQL CLOSE DATABASE;
#endsql

    fprintf(out, "# End of Report\n");
    if (fclose(out)) {
	perror("close failed");
	exit(MR_CCONFIG);
    }
    if (outf)
      fix_file(outf);
    exit(MR_SUCCESS);

 sqlerr:
    com_err(whoami, MR_INGRES_ERR, " code %d\n", sqlca.sqlcode);
#ifsql INGRES
    if (sqlca.sqlcode == 17700 || sqlca.sqlcode == -37000)
      exit(MR_DEADLOCK);
#endsql
    critical_alert("DCM", "Report build encountered INGRES ERROR %d",
		   sqlca.sqlcode);
    exit(MR_INGRES_ERR);
}


print_user(type, user)
     char *type;
     unsigned int user;
{
  struct user *u;
  char *c;
  EXEC SQL BEGIN DECLARE SECTION;
  int id;
  char name[128];
  EXEC SQL END DECLARE SECTION;

  if(strcmp(type, "USER") == 0)
    {
      if(u = (struct user *) hash_lookup(users, user))
	fprintf(out, "USER %s|", u->name);
      else
	fprintf(out, "USER %d|", user);
    }
  else 
    if(id == 0)
      fprintf(out, "smsuser|");
    else
      {
	id = user;
	EXEC SQL SELECT string INTO :name FROM strings WHERE string_id = :id;
	if (sqlca.sqlcode == 0)
	  fprintf(out, "%s|", strtrim(name));
	else
	  fprintf(out, "UNKNOWN|");
      }
 sqlerr:
  return;
}