/* Great hacking proggie by the eleet p0nk B) */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <pwd.h>
#include <unistd.h>
#include <paths.h>

#include <rpc/rpc.h>
#include <rpcsvc/rwall.h>

#define FLASH "\033c\033(0\033#8\033[1;3r\033[J\033[5m\033[?5h"


struct timeval timeout =
    {
      25, 0
    };
int mbufsize;
char *mbuf;

void makemsg ();

int
main(argc, argv)
int argc;
char **argv;
{
  char *wallhost, res;
  CLIENT *cl;
  if ((argc < 2) || (argc > 3))
    {
      fprintf(stderr, "usage: %s hostname [file]\n", argv[0]);
      exit(1);
    }

  wallhost = argv[1];

  makemsg(argv[2]);

  /*
   * Create client "handle" used for calling MESSAGEPROG on the
   * server designated on the command line. We tell the rpc package
   * to use the "tcp" protocol when contacting the server.
  */
  cl = clnt_create(wallhost, WALLPROG, WALLVERS, "udp");
  if (cl == NULL)
    {
      /*
       * Couldn't establish connection with server.
       * Print error message and die.
 [2000]*/
      clnt_pcreateerror(wallhost);
      exit(1);
    }

  if (clnt_call(cl, WALLPROC_WALL, xdr_wrapstring, &mbuf, xdr_void, &res, timeout) != RPC_SUCCESS)
    {
      /*
       * An error occurred while calling the server. 
       * Print error message and die.
 [2000]*/
      clnt_perror(cl, wallhost);
      exit(1);
    }

  exit(0);
}

void
makemsg(fname)
char *fname;
{
  struct tm *lt;
  struct passwd *pw;
  struct stat sbuf;
  time_t now;
  FILE *fp;
  int fd;
  char whom[30]=FLASH, hostname[MAXHOSTNAMELEN], lbuf[100], tmpname[32];

  (void)strcpy(tmpname, _PATH_TMP);
  (void)strcat(tmpname, "/wall.XXXXXX");
  if (!(fd = mkstemp(tmpname)) || !(fp = fdopen(fd, "r+")))
    {
      (void)fprintf(stderr, "wall: can't open temporary file.\n");
      exit(1);
    }
  (void)unlink(tmpname);

  (void)gethostname(hostname, sizeof(hostname));
  (void)time(&now);
  lt = localtime(&now);

  /*
   * all this stuff is to blank out a square for the message;
   * we wrap message lines at column 79, not 80, because some
   * terminals wrap after 79, some do not, and we can't tell.
   * Which means that we may leave a non-blank character
   * in column 80, but that can't be helped.
   */
  (void)fprintf(fp, "Remote Broadcast Message from %s@%s\n",
                whom, hostname);
  (void)fprintf(fp, "        (%s) at %d:%02d ...\n", ttyname(2),
                lt->tm_hour, lt->tm_min);

  putc('\n', fp);

  if (fname && !(freopen(fname, "r", stdin)))
    {
      (void)fprintf(stderr, "wall: can't read %s.\n", fname);
      exit(1);
    }
  while (fgets(lbuf, sizeof(lbuf), stdin))
    fputs(lbuf, fp);
  rewind(fp);

  if (fstat(fd, &sbuf))
    {
      (void)fprintf(stderr, "wall: can't stat temporary file.\n");
      exit(1);
    }
  mbufsize = sbuf.st_size;
  if (!(mbuf = malloc((u_int)mbufsize)))
    {
      (void)fprintf(stderr, "wall: out of memory.\n");
      exit(1);
    }
  if (fread(mbuf, sizeof(*mbuf), mbufsize, fp) != mbufsize)
    {
      (void)fprintf(stderr, "wall: can't read temporary file.\n");
      exit(1);
    }
  (void)close(fd);
}
/*                    www.hack.co.za              [2000]*/