Esempio n. 1
0
/** Attempt to send data queued for a client.
 * @param[in] to Client to send data to.
 */
void send_queued(struct Client *to)
{
  assert(0 != to);
  assert(0 != cli_local(to));

  if (IsBlocked(to) || !can_send(to))
    return;                     /* Don't bother */

  while (MsgQLength(&(cli_sendQ(to))) > 0) {
    unsigned int len;

    if ((len = deliver_it(to, &(cli_sendQ(to))))) {
      msgq_delete(&(cli_sendQ(to)), len);
      cli_lastsq(to) = MsgQLength(&(cli_sendQ(to))) / 1024;
      if (IsBlocked(to)) {
	update_write(to);
        return;
      }
    }
    else {
      if (IsDead(to)) {
        char tmp[512];
        sprintf(tmp,"Write error: %s", ((cli_sslerror(to)) ? (cli_sslerror(to)) :
                ((strerror(cli_error(to))) ? (strerror(cli_error(to))) : "Unknown error")) );
        dead_link(to, tmp);
      }
      return;
    }
  }

  /* Ok, sendq is now empty... */
  client_drop_sendq(cli_connect(to));
  update_write(to);
}
Esempio n. 2
0
/*
 * Create a new struct Client structure and set it to initial state.
 *
 *   from == NULL,   create local client (a client connected to a socket).
 *
 *   from != NULL,   create remote client (behind a socket associated with
 *                   the client defined by 'from').
 *                   ('from' is a local client!!).
 */
struct Client* make_client(struct Client *from, int status)
{
  struct Client* cptr = 0;
  struct Connection* con = 0;

  assert(!from || cli_verify(from));

  cptr = alloc_client();

  assert(0 != cptr);
  assert(!cli_magic(cptr));
  assert(0 == from || 0 != cli_connect(from));

  if (!from) { /* local client, allocate a struct Connection */
    con = alloc_connection();

    assert(0 != con);
    assert(!con_magic(con));

    con_magic(con) = CONNECTION_MAGIC;
    con_fd(con) = -1; /* initialize struct Connection */
    con_freeflag(con) = 0;
    con_nextnick(con) = CurrentTime - NICK_DELAY;
    con_nexttarget(con) = CurrentTime - (TARGET_DELAY * (STARTTARGETS - 1));
    con_handler(con) = UNREGISTERED_HANDLER;
    con_client(con) = cptr;

    cli_local(cptr) = 1; /* Set certain fields of the struct Client */
    cli_since(cptr) = cli_lasttime(cptr) = cli_firsttime(cptr) = CurrentTime;
    cli_lastnick(cptr) = TStime();
  } else
    con = cli_connect(from); /* use 'from's connection */

  assert(0 != con);
  assert(con_verify(con));

  cli_magic(cptr) = CLIENT_MAGIC;
  cli_connect(cptr) = con; /* set the connection and other fields */
  cli_status(cptr) = status;
  cli_hnext(cptr) = cptr;
  strcpy(cli_username(cptr), "unknown");

  return cptr;
}
Esempio n. 3
0
/** Return maximum SendQ length for a client.
 * @param[in] cptr Local client to check.
 * @return Number of bytes allowed in SendQ for \a cptr.
 */
unsigned int
get_sendq(struct Client *cptr)
{
  assert(0 != cptr);
  assert(0 != cli_local(cptr));

  if (cli_max_sendq(cptr))
    return cli_max_sendq(cptr);

  else if (cli_confs(cptr)) {
    struct SLink*     tmp;
    struct ConnectionClass* cl;

    for (tmp = cli_confs(cptr); tmp; tmp = tmp->next) {
      if (!tmp->value.aconf || !(cl = tmp->value.aconf->conn_class))
        continue;
      if (ConClass(cl) != NULL) {
        cli_max_sendq(cptr) = MaxSendq(cl);
        return cli_max_sendq(cptr);
      }
    }
  }
  return feature_uint(FEAT_DEFAULTMAXSENDQLENGTH);
}
Esempio n. 4
0
/** Handle a connection that has sent a valid PASS and SERVER.
 * @param cptr New peer server.
 * @param aconf Connect block for \a cptr.
 * @return Zero.
 */
int server_estab(struct Client *cptr, struct ConfItem *aconf)
{
  struct Client* acptr = 0;
  const char*    inpath;
  int            i;

  assert(0 != cptr);
  assert(0 != cli_local(cptr));

  inpath = cli_name(cptr);

  if (IsUnknown(cptr)) {
    if (aconf->passwd[0])
      sendrawto_one(cptr, MSG_PASS " :%s", aconf->passwd);
    /*
     *  Pass my info to the new server
     */
    sendrawto_one(cptr, MSG_SERVER " %s 1 %Tu %Tu J%s %s%s +%s6 :%s",
		  cli_name(&me), cli_serv(&me)->timestamp,
		  cli_serv(cptr)->timestamp, MAJOR_PROTOCOL, NumServCap(&me),
		  feature_bool(FEAT_HUB) ? "h" : "",
		  *(cli_info(&me)) ? cli_info(&me) : "IRCers United");
  }

  det_confs_butmask(cptr, CONF_SERVER);

  if (!IsHandshake(cptr))
    hAddClient(cptr);
  SetServer(cptr);
  cli_handler(cptr) = SERVER_HANDLER;
  Count_unknownbecomesserver(UserStats);
  SetBurst(cptr);

/*    nextping = CurrentTime; */

  /*
   * NOTE: check for acptr->user == cptr->serv->user is necessary to insure
   * that we got the same one... bleah
   */
  if (cli_serv(cptr)->user && *(cli_serv(cptr))->by &&
      (acptr = findNUser(cli_serv(cptr)->by))) {
    if (cli_user(acptr) == cli_serv(cptr)->user) {
      sendcmdto_one(&me, CMD_NOTICE, acptr, "%C :Link with %s established.",
                    acptr, inpath);
    }
    else {
      /*
       * if not the same client, set by to empty string
       */
      acptr = 0;
      *(cli_serv(cptr))->by = '\0';
    }
  }

  sendto_opmask(acptr, SNO_OLDSNO, "Link with %s established.", inpath);
  cli_serv(cptr)->up = &me;
  cli_serv(cptr)->updown = add_dlink(&(cli_serv(&me))->down, cptr);
  sendto_opmask(0, SNO_NETWORK, "Net junction: %s %s", cli_name(&me),
                cli_name(cptr));
  SetJunction(cptr);
  /*
   * Old sendto_serv_but_one() call removed because we now
   * need to send different names to different servers
   * (domain name matching) Send new server to other servers.
   */
  for (i = 0; i <= HighestFd; i++)
  {
    if (!(acptr = LocalClientArray[i]) || !IsServer(acptr) ||
        acptr == cptr || IsMe(acptr))
      continue;
    if (!match(cli_name(&me), cli_name(cptr)))
      continue;
    sendcmdto_one(&me, CMD_SERVER, acptr,
		  "%s 2 0 %Tu J%02u %s%s +%s%s%s :%s", cli_name(cptr),
		  cli_serv(cptr)->timestamp, Protocol(cptr), NumServCap(cptr),
		  IsHub(cptr) ? "h" : "", IsService(cptr) ? "s" : "",
		  IsIPv6(cptr) ? "6" : "", cli_info(cptr));
  }

  /* Send these as early as possible so that glined users/juped servers can
   * be removed from the network while the remote server is still chewing
   * our burst.
   */
  gline_burst(cptr);
  jupe_burst(cptr);

  /*
   * Pass on my client information to the new server
   *
   * First, pass only servers (idea is that if the link gets
   * canceled because the server was already there,
   * there are no NICK's to be canceled...). Of course,
   * if cancellation occurs, all this info is sent anyway,
   * and I guess the link dies when a read is attempted...? --msa
   *
   * Note: Link cancellation to occur at this point means
   * that at least two servers from my fragment are building
   * up connection this other fragment at the same time, it's
   * a race condition, not the normal way of operation...
   */

  for (acptr = &me; acptr; acptr = cli_prev(acptr)) {
    /* acptr->from == acptr for acptr == cptr */
    if (cli_from(acptr) == cptr)
      continue;
    if (IsServer(acptr)) {
      const char* protocol_str;

      if (Protocol(acptr) > 9)
        protocol_str = IsBurst(acptr) ? "J" : "P";
      else
        protocol_str = IsBurst(acptr) ? "J0" : "P0";

      if (0 == match(cli_name(&me), cli_name(acptr)))
        continue;
      sendcmdto_one(cli_serv(acptr)->up, CMD_SERVER, cptr,
		    "%s %d 0 %Tu %s%u %s%s +%s%s%s :%s", cli_name(acptr),
		    cli_hopcount(acptr) + 1, cli_serv(acptr)->timestamp,
		    protocol_str, Protocol(acptr), NumServCap(acptr),
		    IsHub(acptr) ? "h" : "", IsService(acptr) ? "s" : "",
		    IsIPv6(acptr) ? "6" : "", cli_info(acptr));
    }
  }

  for (acptr = &me; acptr; acptr = cli_prev(acptr))
  {
    /* acptr->from == acptr for acptr == cptr */
    if (cli_from(acptr) == cptr)
      continue;
    if (IsUser(acptr))
    {
      char xxx_buf[25];
      char *s = umode_str(acptr);
      sendcmdto_one(cli_user(acptr)->server, CMD_NICK, cptr,
		    "%s %d %Tu %s %s %s%s%s%s %s%s :%s",
		    cli_name(acptr), cli_hopcount(acptr) + 1, cli_lastnick(acptr),
		    cli_user(acptr)->username, cli_user(acptr)->realhost,
		    *s ? "+" : "", s, *s ? " " : "",
		    iptobase64(xxx_buf, &cli_ip(acptr), sizeof(xxx_buf), IsIPv6(cptr)),
		    NumNick(acptr), cli_info(acptr));
    }
  }
  /*
   * Last, send the BURST.
   * (Or for 2.9 servers: pass all channels plus statuses)
   */
  {
    struct Channel *chptr;
    for (chptr = GlobalChannelList; chptr; chptr = chptr->next)
      send_channel_modes(cptr, chptr);
  }
  sendcmdto_one(&me, CMD_END_OF_BURST, cptr, "");
  return 0;
}