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/*
* Program: $RCSfile: protocol.c,v $ $Revision: 4.5 $
*
* Purpose: Protocol routines of internet "youbin" service.
*
* Author: K.Agusa agusa@nuie.nagoya-u.ac.jp
* S.Yamamoto yamamoto@nuie.nagoya-u.ac.jp
*
* Date: 1993/07/24
* Modified: $Date: 1995/01/07 10:35:34 $
*
* Copyright: K.Agusa and S.Yamamoto 1993 - 94
*
* The X Consortium, and any party obtaining a copy of these files from
* the X Consortium, directly or indirectly, is granted, free of charge,
* a full and unrestricted irrevocable, world-wide, paid up, royalty-free,
* nonexclusive right and license to deal in this software and documentation
* files (the "Software"), including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons who receive copies from any such
* party to do so. This license includes without limitation a license to do
* the foregoing actions under any patents of the party supplying this
* software to the X Consortium.
*/
#ifndef lint
static char rcsid[] =
"$Id: protocol.c,v 4.5 1995/01/07 10:35:34 yamamoto Exp $";
#endif /* not lint */
#include <sys/types.h> /* Must be included before "sys/socket.h". */
#include <sys/socket.h> /* For struct sockaddr. */
#include <netinet/in.h> /* For struct sockaddr_in. */
#include <arpa/inet.h> /* For inet_ntoa(). */
#include <netdb.h> /* For gethostbyname() and gethostbyaddr(). */
#include <stdio.h>
#include "youbin.h"
#include "server.h"
void
do_Wakeup(mess, endp)
char *mess, *endp;
{
/*
* mess := "<user name> <protocol version>"
* | "<user name> <protocol version> <options>"
*/
char *cp; /* Pointer to <protocol version>. */
char *cp1; /* Pointer to <option>. */
StateP id; /* User ID. */
if ((cp = strchr(mess, ' ')) == NULL) {
strcpy(NAK_reason, "Invalid version");
send_packet(NAK_buff, CA_ADDR);
return;
}
*cp++ = '\0'; /* Trim protocol version. */
if ((cp1 = strchr(cp, ' ')) == NULL) {
cp1 = endp; /* No options. */
} else {
*cp1++ = '\0'; /* Trim options. */
}
if (strcmp(cp, PROTOCOL_VERSION) != 0) { /* Check protocol version. */
strcpy(NAK_reason, "Invalid version");
send_packet(NAK_buff, CA_ADDR);
return;
}
if ((id = make_user(mess, cp1, NAK_reason)) != NULL) {
if (debug_mode || trace_mode) {
char buff_log[LOG_LEN]; /* Only for log. */
struct hostent *hp;
if ((hp = gethostbyaddr((char *)&ca.sin_addr,
sizeof(ca.sin_addr), ca.sin_family)) == NULL) {
sys_error_log("gethostbyaddr");
}
sprintf(buff_log, "Wakeup packet: %s [%ld]: host = %s, port = %d\n",
mess, (long)id,
((hp != NULL) ? hp->h_name : inet_ntoa(ca.sin_addr)),
ntohs(ca.sin_port));
debug_log(" %s", buff_log);
trace(buff_log);
}
send_Registerd(id);
send_Status(id);
} else { /* Invalid user. */
send_packet(NAK_buff, CA_ADDR); /* Send to global ca. */
}
}
void
do_Update(mess)
char *mess;
{
/*
* Value of mess is one of below:
* (1) packet = "U <user name>", mess = "<user name>"
* (2) packet = "U /<user id>", mess = "/<user id>"
* (3) packet = "<user name>@<mailbox offset>", mess = "<user name>".
*/
UserP up;
StateP sp;
if (*mess == '/') { /* Case (2). */
if ((sp = get_id(mess + 1)) != NULL) {
up = sp->parent;
} else {
up = NULL;
}
} else { /* Case (1) or (3). */
up = find_user(mess);
}
if (up != NULL) {
check_spool(up);
for (sp = up->stat; sp != NULL; sp = sp->next) {
send_Status(sp);
}
}
}
void
send_Registerd(sp)
StateP sp;
{
char buff[MESS_LEN + 1];
sprintf(buff, "R %ld %d", (long)sp, CLIENT_TIME_OUT);
send_packet(buff, sp);
}
void
send_Status(sp)
StateP sp;
{
UserP up;
char buff[MESS_LEN + 1];
up = sp->parent;
sprintf(buff, "S %d %d", up->size, up->time);
send_packet(buff, sp);
}
void
send_Quit(reason)
char *reason;
{
StateP sp;
UserP up;
char buff[MESS_LEN + 1];
sprintf(buff, "Q %s", reason);
for (up = UserList.next; up != NULL; up = up->next) {
for (sp = up->stat; sp != NULL; sp = sp->next) {
send_packet(buff, sp);
}
}
}
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