int start_cnode(const char *cookie_file, ei_cnode *ec, int *epmd_sock, int *listen_sock, const char *reg_name, const char *host_name) {
char *cookie = 0, *default_node_name = 0, *node_name;
short creation = 0;
int s, port, pub, tries;
socklen_t addr_len;
struct sockaddr_in addr;
cookie = read_cookie(cookie_file);
node_name = (char *)malloc(strlen(reg_name) + strlen(host_name) + 2);
strcpy(node_name, reg_name);
strcat(node_name, "@");
strcat(node_name, host_name);
/* The thisipaddr parameter is unused at the moment (R13B01). */
ei_connect_xinit(ec, host_name, reg_name, node_name, 0, cookie, creation);
if (cookie)
free(cookie);
if (default_node_name)
free(default_node_name);
free(node_name);
s = open_port();
addr_len = sizeof addr;
getsockname(s, (struct sockaddr *)&addr, &addr_len);
port = ntohs(addr.sin_port);
DEBUG_V("bound port %d", port);
/* It's possible that epmd has been started, but hasn't yet finished starting
* up, so we have a few goes at connecting. Like erl, epmd goes directly into
* the background when started, not indicating when it's ready. */
DEBUG("connecting to epmd");
tries = 0;
while (1) {
pub = ei_publish(ec, port);
if (pub != -1)
break;
if (!tries)
fprintf(stderr, "Waiting for connection to epmd.\n");
if (tries++ < ERLD_MAX_TRIES) {
if (debug_flag)
erl_err_ret("epmd connection failed, polling (attempt %d/%d)", tries, ERLD_MAX_TRIES);
usleep(ERLD_POLL_TIME * 1000);
}
else {
erl_err_ret("Unable to connect to epmd");
return -1;
}
}
*epmd_sock = pub;
*listen_sock = s;
return 0;
}
static switch_status_t create_acceptor() {
switch_sockaddr_t *sa;
uint16_t port;
char ipbuf[25];
const char *ip_addr;
/* if the config has specified an erlang release compatibility then pass that along to the erlang interface */
if (globals.ei_compat_rel) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Compatability with OTP R%d requested\n", globals.ei_compat_rel);
ei_set_compat_rel(globals.ei_compat_rel);
}
if (!(globals.acceptor = create_socket_with_port(globals.pool, globals.port))) {
return SWITCH_STATUS_SOCKERR;
}
switch_socket_addr_get(&sa, SWITCH_FALSE, globals.acceptor);
port = switch_sockaddr_get_port(sa);
ip_addr = switch_get_addr(ipbuf, sizeof (ipbuf), sa);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Erlang connection acceptor listening on %s:%u\n", ip_addr, port);
/* try to initialize the erlang interface */
if (create_ei_cnode(ip_addr, globals.ei_nodename, &globals.ei_cnode) != SWITCH_STATUS_SUCCESS) {
return SWITCH_STATUS_SOCKERR;
}
/* tell the erlang port manager where we can be reached. this returns a file descriptor pointing to epmd or -1 */
if ((globals.epmdfd = ei_publish(&globals.ei_cnode, port)) == -1) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR,
"Failed to publish port to epmd. Try starting it yourself or run an erl shell with the -sname or -name option.\n");
return SWITCH_STATUS_SOCKERR;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Connected to epmd and published erlang cnode name %s at port %d\n", globals.ei_cnode.thisnodename, port);
return SWITCH_STATUS_SUCCESS;
}
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;
}
int erl_publish(int port)
{
return ei_publish(&erl_if_ec, port);
}
int erlang_init() {
char *host;
struct sockaddr_in sin;
socklen_t slen = sizeof(struct sockaddr_in);
char *ip = NULL;
char *nodename;
struct in_addr addr;
uerl.lock = uwsgi_lock_init("erlang");
if (uerl.name) {
host = strchr(uerl.name, '@');
if (!host) {
if (ei_connect_init(&uerl.cnode, uerl.name, uerl.cookie, 0) < 0) {
uwsgi_log("unable to initialize erlang connection\n");
exit(1);
}
}
else {
nodename = uwsgi_concat2n(uerl.name, host-uerl.name, "",0);
ip = uwsgi_resolve_ip(host+1);
if (ip) {
#ifdef UWSGI_DEBUG
uwsgi_log("ip: %s\n", ip);
#endif
addr.s_addr = inet_addr(ip);
if (ei_connect_xinit(&uerl.cnode, host+1, nodename, uerl.name, &addr, uerl.cookie, 0) < 0) {
uwsgi_log("unable to initialize erlang connection\n");
exit(1);
}
}
else {
if (ei_connect_init(&uerl.cnode, nodename, uerl.cookie, 0) < 0) {
uwsgi_log("unable to initialize erlang connection\n");
exit(1);
}
}
free(nodename);
}
if (ip) {
uerl.fd = bind_to_tcp(ip, uwsgi.listen_queue, NULL);
}
else {
uerl.fd = bind_to_tcp("", uwsgi.listen_queue, NULL);
}
if (uerl.fd < 0) {
exit(1);
}
if (getsockname(uerl.fd, (struct sockaddr *) &sin, &slen)) {
uwsgi_error("getsockname()");
exit(1);
}
if (ei_publish(&uerl.cnode, ntohs(sin.sin_port)) < 0) {
uwsgi_log( "*** unable to subscribe with EPMD ***\n");
exit(1);
}
uwsgi_log("Erlang C-Node %s registered on port %d\n", ei_thisnodename(&uerl.cnode), ntohs(sin.sin_port));
if (register_gateway("uWSGI erlang c-node", erlang_loop, NULL) == NULL) {
uwsgi_log("unable to register the erlang gateway\n");
exit(1);
}
}
return 0;
}
static DWORD WINAPI
#else
static void*
#endif
einode_thread(void* num)
{
int n = (int)num;
ei_cnode ec;
char myname[100], destname[100];
int r, fd, listen;
ErlConnect conn;
erlang_msg msg;
/* FILE* f;*/
sprintf(myname, "eiacc%d", n);
printf("thread %d (%s) listening\n", n, myname, destname);
r = ei_connect_init(&ec, myname, cookie, 0);
if ((listen = my_listen(port+n)) <= 0) {
printf("listen err\n");
exit(7);
}
if (ei_publish(&ec, port + n) == -1) {
printf("ei_publish port %d\n", port+n);
exit(8);
}
fd = ei_accept(&ec, listen, &conn);
printf("ei_accept %d\n", fd);
if (fd >= 0) {
ei_x_buff x, xs;
int index, version;
erlang_pid pid;
ei_x_new(&x);
for (;;) {
int got = ei_xreceive_msg(fd, &msg, &x);
if (got == ERL_TICK)
continue;
if (got == ERL_ERROR) {
printf("receive error %d\n", n);
return 0;
}
printf("received %d\n", got);
break;
}
index = 0;
if (ei_decode_version(x.buff, &index, &version) != 0) {
printf("ei_decode_version %d\n", n);
return 0;
}
if (ei_decode_pid(x.buff, &index, &pid) != 0) {
printf("ei_decode_pid %d\n", n);
return 0;
}
/* fprintf(f, "got pid from %s \n", pid.node);*/
ei_x_new_with_version(&xs);
ei_x_encode_tuple_header(&xs, 2);
ei_x_encode_long(&xs, n);
ei_x_encode_pid(&xs, &pid);
r = ei_send(fd, &pid, xs.buff, xs.index);
/* fprintf(f, "sent %d bytes %d\n", xs.index, r);*/
shutdown(fd, SD_SEND);
closesocket(fd);
ei_x_free(&x);
ei_x_free(&xs);
} else {
printf("coudn't connect fd %d r %d\n", fd, r);
}
printf("done thread %d\n", n);
/* fclose(f);*/
return 0;
}
