예제 #1
0
파일: ei_resolve.c 프로젝트: Chylis/otp
static struct hostent *my_gethostbyname_r(const char *name, 
					  struct hostent *hostp, 
					  char *buffer, 
					  int buflen, 
					  int *h_errnop)
{
  struct hostent dest;
  struct hostent *src;
  struct hostent *rval = NULL;

  /* FIXME this should have been done in 'erl'_init()? */
  if (!ei_resolve_initialized) ei_init_resolve(); 

#ifdef _REENTRANT
  /* === BEGIN critical section === */
  if (ei_mutex_lock(ei_gethost_sem,0) != 0) {
    *h_errnop = NO_RECOVERY;
    return NULL;
  }
#endif /* _REENTRANT */

  /* lookup the data */
  if ((src = ei_gethostbyname(name))) {
    /* copy to caller's buffer */
    if (!copy_hostent(&dest,src,buffer,buflen)) {
      /* success */ 
      *hostp = dest;               
      *h_errnop = 0;
      rval = hostp;
    }
    
    else {
      /* failure - buffer size */
#ifdef __WIN32__
      SetLastError(ERROR_INSUFFICIENT_BUFFER);
#else
      errno = ERANGE;
#endif
      *h_errnop = 0;
    }
  }
  
  else {
    /* failure - lookup */
#ifdef __WIN32__
    *h_errnop = WSAGetLastError();
#else
    *h_errnop = h_errno;
#endif
  }

#ifdef _REENTRANT
  /* === END critical section === */
  ei_mutex_unlock(ei_gethost_sem);
#endif /* _REENTRANT */
  return rval;
}
예제 #2
0
파일: erl_start.c 프로젝트: ask/erlang-otp
static struct in_addr *get_addr(const char *hostname, struct in_addr *oaddr)
{
  struct hostent *hp;

#if !defined (__WIN32__)
  char buf[1024];
  struct hostent host;
  int herror;

  hp = ei_gethostbyname_r(hostname,&host,buf,1024,&herror);
#else
  hp = ei_gethostbyname(hostname);
#endif

  if (hp) {
    memmove(oaddr,hp->h_addr_list[0],sizeof(oaddr));
    return oaddr;
  }
  return NULL;
}
예제 #3
0
파일: ei_fake_prog.c 프로젝트: caox/otp
int main(void)
#endif
{
  ErlConnect conp;
  Erl_IpAddr thisipaddr = (Erl_IpAddr)0;
  FILE *fp = (FILE *)0;
  char* charp = "foo";
  double *doublep = NULL;
  double doublex = 0.0;
  ei_cnode xec;
  ei_reg *ei_regp = NULL;
  ei_term eterm;
  ei_x_buff eix;
  erlang_big *bigp = NULL;
  erlang_fun efun;
  erlang_msg *msgp = NULL;
  erlang_msg emsg;
  erlang_pid *pidp = NULL;
  erlang_pid epid;
  erlang_port eport;
  erlang_ref eref;
  erlang_trace etrace;
  int *intp = NULL;
  int intx = 0;
  long *longp = NULL;
  long longx = 0;
  short creation = 0;
  struct ei_reg_stat *ei_reg_statp = NULL;
  struct ei_reg_tabstat *ei_reg_tabstatp = NULL;
  struct hostent *hostp = NULL;
  unsigned char * ucharp = (unsigned char *)"foo";
  unsigned long *ulongp = NULL;
  unsigned long ulongx = 0;
  void *voidp = NULL;
#ifndef VXWORKS
  EI_LONGLONG *longlongp = (EI_LONGLONG*)NULL;
  EI_LONGLONG longlongx = 0;
  EI_ULONGLONG *ulonglongp = (EI_ULONGLONG*)NULL;
  EI_ULONGLONG ulonglongx = 0;
#endif
  enum erlang_char_encoding enc;

  intx = erl_errno;

  ei_connect_init(&xec, charp, charp, creation);
  ei_connect_xinit (&xec, charp, charp, charp, thisipaddr, charp, creation);

  ei_connect(&xec, charp);
  ei_xconnect (&xec, thisipaddr, charp);

  ei_receive(intx, ucharp, intx);
  ei_receive_msg(intx, &emsg, &eix);
  ei_xreceive_msg(intx, &emsg, &eix);

  ei_send(intx, &epid, charp, intx);
  ei_reg_send(&xec, intx, charp, charp, intx);

  ei_rpc(&xec, intx, charp, charp, charp, intx, &eix);
  ei_rpc_to(&xec, intx, charp, charp, charp, intx);
  ei_rpc_from(&xec, intx, intx, &emsg, &eix);

  ei_publish(&xec, intx);
  ei_accept(&xec, intx, &conp);
  ei_unpublish(&xec);

  ei_thisnodename(&xec);
  ei_thishostname(&xec);
  ei_thisalivename(&xec);

  ei_self(&xec);

  ei_gethostbyname(charp);
  ei_gethostbyaddr(charp, intx, intx);
  ei_gethostbyname_r(charp, hostp, charp, intx, intp);
  ei_gethostbyaddr_r(charp, intx, intx, hostp, charp, intx, intp);

  ei_encode_version(charp, intp);
  ei_x_encode_version(&eix);
  ei_encode_long(charp, intp, longx);
  ei_x_encode_long(&eix, longx);
  ei_encode_ulong(charp, intp, ulongx);
  ei_x_encode_ulong(&eix, ulongx);
  ei_encode_double(charp, intp, doublex);
  ei_x_encode_double(&eix, doublex);
  ei_encode_boolean(charp, intp, intx);
  ei_x_encode_boolean(&eix, intx);
  ei_encode_char(charp, intp, 'a');
  ei_x_encode_char(&eix, 'a');
  ei_encode_string(charp, intp, charp);
  ei_encode_string_len(charp, intp, charp, intx);
  ei_x_encode_string(&eix, charp);
  ei_x_encode_string_len(&eix, charp, intx);
  ei_encode_atom(charp, intp, charp);
  ei_encode_atom_as(charp, intp, charp, ERLANG_LATIN1, ERLANG_UTF8);
  ei_encode_atom_len(charp, intp, charp, intx);
  ei_encode_atom_len_as(charp, intp, charp, intx, ERLANG_ASCII, ERLANG_LATIN1);
  ei_x_encode_atom(&eix, charp);
  ei_x_encode_atom_as(&eix, charp, ERLANG_LATIN1, ERLANG_UTF8);
  ei_x_encode_atom_len(&eix, charp, intx);
  ei_x_encode_atom_len_as(&eix, charp, intx, ERLANG_LATIN1, ERLANG_UTF8);
  ei_encode_binary(charp, intp, (void *)0, longx);
  ei_x_encode_binary(&eix, (void*)0, intx);
  ei_encode_pid(charp, intp, &epid);
  ei_x_encode_pid(&eix, &epid);
  ei_encode_fun(charp, intp, &efun);
  ei_x_encode_fun(&eix, &efun);
  ei_encode_port(charp, intp, &eport);
  ei_x_encode_port(&eix, &eport);
  ei_encode_ref(charp, intp, &eref);
  ei_x_encode_ref(&eix, &eref);
  ei_encode_trace(charp, intp, &etrace);
  ei_x_encode_trace(&eix, &etrace);
  ei_encode_tuple_header(charp, intp, intx);
  ei_x_encode_tuple_header(&eix, longx);
  ei_encode_list_header(charp, intp, intx);
  ei_x_encode_list_header(&eix, longx);
/* #define ei_encode_empty_list(buf,i) ei_encode_list_header(buf,i,0) */
  ei_x_encode_empty_list(&eix);

  ei_get_type(charp, intp, intp, intp);
  ei_get_type_internal(charp, intp, intp, intp);

  ei_decode_version(charp, intp, intp);
  ei_decode_long(charp, intp, longp);
  ei_decode_ulong(charp, intp, ulongp);
  ei_decode_double(charp, intp, doublep);
  ei_decode_boolean(charp, intp, intp);
  ei_decode_char(charp, intp, charp);
  ei_decode_string(charp, intp, charp);
  ei_decode_atom(charp, intp, charp);
  ei_decode_atom_as(charp, intp, charp, MAXATOMLEN_UTF8, ERLANG_WHATEVER, &enc, &enc);
  ei_decode_binary(charp, intp, (void *)0, longp);
  ei_decode_fun(charp, intp, &efun);
  free_fun(&efun);
  ei_decode_pid(charp, intp, &epid);
  ei_decode_port(charp, intp, &eport);
  ei_decode_ref(charp, intp, &eref);
  ei_decode_trace(charp, intp, &etrace);
  ei_decode_tuple_header(charp, intp, intp);
  ei_decode_list_header(charp, intp, intp);

  ei_decode_ei_term(charp, intp, &eterm);

  ei_print_term(fp, charp, intp);
  ei_s_print_term(&charp, charp, intp);

  ei_x_format(&eix, charp);
  ei_x_format_wo_ver(&eix, charp);

  ei_x_new(&eix);
  ei_x_new_with_version(&eix);
  ei_x_free(&eix);
  ei_x_append(&eix, &eix);
  ei_x_append_buf(&eix, charp, intx);
  ei_skip_term(charp, intp);

  ei_reg_open(intx);
  ei_reg_resize(ei_regp, intx);
  ei_reg_close(ei_regp);

  ei_reg_setival(ei_regp, charp, longx);
  ei_reg_setfval(ei_regp, charp, doublex);
  ei_reg_setsval(ei_regp, charp, charp);
  ei_reg_setpval(ei_regp, charp, voidp, intx);

  ei_reg_setval(ei_regp, charp, intx);

  ei_reg_getival(ei_regp, charp);
  ei_reg_getfval(ei_regp, charp);
  ei_reg_getsval(ei_regp, charp);
  ei_reg_getpval(ei_regp, charp, intp);

  ei_reg_getval(ei_regp, charp, intx);

  ei_reg_markdirty(ei_regp, charp);

  ei_reg_delete(ei_regp, charp);

  ei_reg_stat(ei_regp, charp, ei_reg_statp);

  ei_reg_tabstat(ei_regp, ei_reg_tabstatp);

  ei_reg_dump(intx, ei_regp, charp, intx);
  ei_reg_restore(intx, ei_regp, charp);
  ei_reg_purge(ei_regp);

#if defined(HAVE_GMP_H) && defined(HAVE_LIBGMP)
  {
      mpz_t obj;
      ei_decode_bignum(charp, intp, obj);
      ei_encode_bignum(charp, intp, obj);
      ei_x_encode_bignum(&eix, obj);
  }
#endif /* HAVE_GMP_H && HAVE_LIBGMP */

#ifndef VXWORKS

  ei_decode_longlong(charp, intp, longlongp);
  ei_decode_ulonglong(charp, intp, ulonglongp);
  ei_encode_longlong(charp, intp, longlongx);
  ei_encode_ulonglong(charp, intp, ulonglongx);
  ei_x_encode_longlong(&eix, longlongx);
  ei_x_encode_ulonglong(&eix, ulonglongx);

#endif

#ifdef USE_EI_UNDOCUMENTED

  ei_decode_intlist(charp, intp, longp, intp);

  ei_receive_encoded(intx, &charp, intp, msgp, intp);
  ei_send_encoded(intx, pidp, charp, intx);
  ei_send_reg_encoded(intx, pidp, charp, charp, intx);

  ei_decode_big(charp, intp, bigp);
  ei_big_comp(bigp, bigp);
  ei_big_to_double(bigp, doublep);
  ei_small_to_big(intx, bigp);
  ei_alloc_big(intx);
  ei_free_big(bigp);

#endif /* USE_EI_UNDOCUMENTED */

  return
      BUFSIZ +
      EAGAIN +
      EHOSTUNREACH +
      EIO +
      EI_BIN +
      EI_DELET +
      EI_DIRTY +
      EI_FLT +
      EI_FORCE +
      EI_INT +
      EI_NOPURGE +
      EI_STR +
      EMSGSIZE +
      ENOMEM +
      ERL_ERROR +
      ERL_EXIT +
      ERL_LINK +
      ERL_MSG +
      ERL_NO_TIMEOUT +
      ERL_REG_SEND +
      ERL_SEND +
      ERL_TICK +
      ERL_TIMEOUT +
      ERL_UNLINK +
      ETIMEDOUT +
      MAXATOMLEN;
}
예제 #4
0
파일: ei_connect.c 프로젝트: 616050468/otp
  /* 
  * Set up a connection to a given Node, and 
  * interchange hand shake messages with it.
  * Returns a valid file descriptor at success,
  * otherwise a negative error code.
*/
int ei_connect_tmo(ei_cnode* ec, char *nodename, unsigned ms)
{
    char *hostname, alivename[BUFSIZ];
    struct hostent *hp;
#if !defined (__WIN32__) 
    /* these are needed for the call to gethostbyname_r */
    struct hostent host;
    char buffer[1024];
    int ei_h_errno;
#endif /* !win32 */
    
    /* extract the host and alive parts from nodename */
    if (!(hostname = strchr(nodename,'@'))) {
	EI_TRACE_ERR0("ei_connect","Node name has no @ in name");
	return ERL_ERROR;
    } else {
	strncpy(alivename, nodename, hostname - nodename);
	alivename[hostname - nodename] = 0x0;
	hostname++;
    }
    
#ifndef __WIN32__
    hp = ei_gethostbyname_r(hostname,&host,buffer,1024,&ei_h_errno);
    if (hp == NULL) {
	char thishostname[EI_MAXHOSTNAMELEN+1];
	if (gethostname(thishostname,EI_MAXHOSTNAMELEN) < 0) {
	    EI_TRACE_ERR0("ei_connect_tmo",
			  "Failed to get name of this host");
	    erl_errno = EHOSTUNREACH;
	    return ERL_ERROR;
	} else {
	    char *ct;
	    /* We use a short node name */    
	    if ((ct = strchr(thishostname, '.')) != NULL) *ct = '\0';
	}
	if (strcmp(hostname,thishostname) == 0)
	    /* Both nodes on same standalone host, use loopback */
	    hp = ei_gethostbyname_r("localhost",&host,buffer,1024,&ei_h_errno);
	if (hp == NULL) {
	    EI_TRACE_ERR2("ei_connect",
			  "Can't find host for %s: %d\n",nodename,ei_h_errno);
	    erl_errno = EHOSTUNREACH;
	    return ERL_ERROR;
	}
    }
#else /* __WIN32__ */
    if ((hp = ei_gethostbyname(hostname)) == NULL) {
	char thishostname[EI_MAXHOSTNAMELEN+1];
	if (gethostname(thishostname,EI_MAXHOSTNAMELEN) < 0) {
	    EI_TRACE_ERR1("ei_connect_tmo",
			  "Failed to get name of this host: %d", 
			  WSAGetLastError());
	    erl_errno = EHOSTUNREACH;
	    return ERL_ERROR;
	} else {
	    char *ct;
	    /* We use a short node name */    
	    if ((ct = strchr(thishostname, '.')) != NULL) *ct = '\0';
	}
	if (strcmp(hostname,thishostname) == 0)
	    /* Both nodes on same standalone host, use loopback */
	    hp = ei_gethostbyname("localhost");
	if (hp == NULL) {
	    char reason[1024];
	    win32_error(reason,sizeof(reason));
	    EI_TRACE_ERR2("ei_connect",
			  "Can't find host for %s: %s",nodename,reason);
	    erl_errno = EHOSTUNREACH;
	    return ERL_ERROR;
	}
    }
#endif /* win32 */
    return ei_xconnect_tmo(ec, (Erl_IpAddr) *hp->h_addr_list, alivename, ms);
} /* ei_connect */
예제 #5
0
파일: ei_connect.c 프로젝트: 616050468/otp
/*
* Initialize by set: thishostname, thisalivename, 
* thisnodename and thisipaddr. At success return 0,
* otherwise return -1.
*/
int ei_connect_init(ei_cnode* ec, const char* this_node_name,
		    const char *cookie, short creation)
{
    struct hostent *hp;
    char thishostname[EI_MAXHOSTNAMELEN+1];
    char thisnodename[MAXNODELEN+1];
    char thisalivename[EI_MAXALIVELEN+1];

#ifdef __WIN32__
    if (!initWinSock()) {
	EI_TRACE_ERR0("ei_connect_xinit","can't initiate winsock");
	return ERL_ERROR;
    }
#endif /* win32 */
#ifdef _REENTRANT
    if (ei_sockets_lock == NULL) {
	ei_sockets_lock = ei_mutex_create();
    }
#endif /* _REENTRANT */
    
    if (gethostname(thishostname, EI_MAXHOSTNAMELEN) == -1) {
#ifdef __WIN32__
	EI_TRACE_ERR1("ei_connect_init","Failed to get host name: %d",
		      WSAGetLastError());
#else
	EI_TRACE_ERR1("ei_connect_init","Failed to get host name: %d", errno);
#endif /* win32 */
	return ERL_ERROR;
    }

    if (this_node_name == NULL) {
	sprintf(thisalivename, "c%d", (int) getpid());
    } else if (strlen(this_node_name) >= sizeof(thisalivename)) {
	EI_TRACE_ERR0("ei_connect_init","ERROR: this_node_name too long");
	return ERL_ERROR;
    } else {
	strcpy(thisalivename, this_node_name);
    }
    
    if ((hp = ei_gethostbyname(thishostname)) == 0) {
	/* Looking up IP given hostname fails. We must be on a standalone
	   host so let's use loopback for communication instead. */
	if ((hp = ei_gethostbyname("localhost")) == 0) {
#ifdef __WIN32__
	    char reason[1024];
	
	    win32_error(reason,sizeof(reason));
	    EI_TRACE_ERR2("ei_connect_init",
			  "Can't get ip address for host %s: %s",
			  thishostname, reason);
#else
	    EI_TRACE_ERR2("ei_connect_init",
			  "Can't get ip address for host %s: %d",
			  thishostname, h_errno);
#endif /* win32 */
	    return ERL_ERROR;
	}
    }
    {
	char* ct;
	if (strcmp(hp->h_name, "localhost") == 0) {
	    /* We use a short node name */    
	    if ((ct = strchr(thishostname, '.')) != NULL) *ct = '\0';
	    sprintf(thisnodename, "%s@%s", this_node_name, thishostname);
	} else {
	    /* We use a short node name */    
	    if ((ct = strchr(hp->h_name, '.')) != NULL) *ct = '\0';
	    strcpy(thishostname, hp->h_name);
	    sprintf(thisnodename, "%s@%s", this_node_name, hp->h_name);
	}
    }
    return ei_connect_xinit(ec, thishostname, thisalivename, thisnodename,
			    (struct in_addr *)*hp->h_addr_list, cookie, creation);
}