int ei_x_encode_version(ei_x_buff* x)
{
int i = x->index;
ei_encode_version(NULL, &i);
if (!x_fix_buff(x, i))
return -1;
return ei_encode_version(x->buff, &x->index);
}
/* this sends either link or unlink ('which' decides) */
static int link_unlink(int fd, const erlang_pid *from, const erlang_pid *to,
int which, unsigned ms)
{
char msgbuf[EISMALLBUF];
char *s;
int index = 0;
int n;
index = 5; /* max sizes: */
ei_encode_version(msgbuf,&index); /* 1 */
ei_encode_tuple_header(msgbuf,&index,3);
ei_encode_long(msgbuf,&index,which);
ei_encode_pid(msgbuf,&index,from); /* 268 */
ei_encode_pid(msgbuf,&index,to); /* 268 */
/* 5 byte header missing */
s = msgbuf;
put32be(s, index - 4); /* 4 */
put8(s, ERL_PASS_THROUGH); /* 1 */
/* sum: 542 */
#ifdef DEBUG_DIST
if (ei_trace_distribution > 1) ei_show_sendmsg(stderr,msgbuf,NULL);
#endif
n = ei_write_fill_t(fd,msgbuf,index,ms);
return (n==index ? 0 : -1);
}
void ei_link(listener_t *listener, erlang_pid * from, erlang_pid * to)
{
char msgbuf[2048];
char *s;
int index = 0;
int ret;
index = 5; /* max sizes: */
ei_encode_version(msgbuf, &index); /* 1 */
ei_encode_tuple_header(msgbuf, &index, 3);
ei_encode_long(msgbuf, &index, ERL_LINK);
ei_encode_pid(msgbuf, &index, from); /* 268 */
ei_encode_pid(msgbuf, &index, to); /* 268 */
/* 5 byte header missing */
s = msgbuf;
put32be(s, index - 4); /* 4 */
put8(s, ERL_PASS_THROUGH); /* 1 */
/* sum: 542 */
switch_mutex_lock(listener->sock_mutex);
#ifdef WIN32
ret = send(listener->sockfd, msgbuf, index, 0);
#else
ret = write(listener->sockfd, msgbuf, index);
#endif
switch_mutex_unlock(listener->sock_mutex);
}
void ei_link(listener_t *listener, erlang_pid * from, erlang_pid * to)
{
char msgbuf[2048];
char *s;
int index = 0;
switch_socket_t *sock = NULL;
switch_os_sock_put(&sock, &listener->sockdes, listener->pool);
index = 5; /* max sizes: */
ei_encode_version(msgbuf, &index); /* 1 */
ei_encode_tuple_header(msgbuf, &index, 3);
ei_encode_long(msgbuf, &index, ERL_LINK);
ei_encode_pid(msgbuf, &index, from); /* 268 */
ei_encode_pid(msgbuf, &index, to); /* 268 */
/* 5 byte header missing */
s = msgbuf;
put32be(s, index - 4); /* 4 */
put8(s, ERL_PASS_THROUGH); /* 1 */
/* sum: 542 */
switch_mutex_lock(listener->sock_mutex);
if (switch_socket_send(sock, msgbuf, (switch_size_t *) &index)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Failed to link to process on %s\n", listener->peer_nodename);
}
switch_mutex_unlock(listener->sock_mutex);
}
void ei_link(listener_t *listener, erlang_pid * from, erlang_pid * to)
{
char msgbuf[2048];
char *s;
int index = 0;
index = 5; /* max sizes: */
ei_encode_version(msgbuf, &index); /* 1 */
ei_encode_tuple_header(msgbuf, &index, 3);
ei_encode_long(msgbuf, &index, ERL_LINK);
ei_encode_pid(msgbuf, &index, from); /* 268 */
ei_encode_pid(msgbuf, &index, to); /* 268 */
/* 5 byte header missing */
s = msgbuf;
put32be(s, index - 4); /* 4 */
put8(s, ERL_PASS_THROUGH); /* 1 */
/* sum: 542 */
switch_mutex_lock(listener->sock_mutex);
#ifdef WIN32
send(listener->sockfd, msgbuf, index, 0);
#else
if (write(listener->sockfd, msgbuf, index) == -1) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Failed to link to process on %s\n", listener->peer_nodename);
}
#endif
switch_mutex_unlock(listener->sock_mutex);
}
static void handle_signals(const char *req, int *req_index)
{
// No arguments
(void) req;
(void) req_index;
if (!uart_is_open(uart)) {
send_error_response("ebadf");
return;
}
struct uart_signals sig;
if (uart_get_signals(uart, &sig) >= 0) {
char resp[128];
int resp_index = sizeof(uint16_t);
resp[resp_index++] = response_id;
ei_encode_version(resp, &resp_index);
ei_encode_tuple_header(resp, &resp_index, 2);
ei_encode_atom(resp, &resp_index, "ok");
ei_encode_map_header(resp, &resp_index, 8);
encode_kv_bool(resp, &resp_index, "dsr", sig.dsr);
encode_kv_bool(resp, &resp_index, "dtr", sig.dtr);
encode_kv_bool(resp, &resp_index, "rts", sig.rts);
encode_kv_bool(resp, &resp_index, "st", sig.st);
encode_kv_bool(resp, &resp_index, "sr", sig.sr);
encode_kv_bool(resp, &resp_index, "cts", sig.cts);
encode_kv_bool(resp, &resp_index, "cd", sig.cd);
encode_kv_bool(resp, &resp_index, "rng", sig.rng);
erlcmd_send(resp, resp_index);
} else
send_error_response(uart_last_error());
}
static int mn_send_delete(int fd, erlang_pid *mnesia, const char *key)
{
char sbuf[EISMALLBUF];
char *dbuf = NULL;
char *msgbuf;
int index = 0;
int len = strlen(key) + 32; /* 32 is a slight overestimate */
if (len > EISMALLBUF)
if (!(dbuf = malloc(len)))
return -1;
msgbuf = (dbuf ? dbuf : sbuf);
/* set up delete message { delete, Key } */
ei_encode_version(msgbuf,&index);
ei_encode_tuple_header(msgbuf,&index,2);
ei_encode_atom(msgbuf,&index,EI_MNESIA_DELETE);
ei_encode_string(msgbuf,&index,key);
/* send it */
if (ei_send_encoded(fd,mnesia,msgbuf,index)) {
if (dbuf) free(dbuf);
return -1;
}
if (dbuf) free(dbuf);
return 0;
}
/* length (4), PASS_THROUGH (1), header, message */
int ei_ei_send_reg_encoded(ei_cnode* ec, int fd, const erlang_pid *from,
const char *to, const char *msg, int msglen)
{
char *s, header[1400]; /* see size calculation below */
erlang_trace *token = NULL;
int index = 5; /* reserve 5 bytes for control message */
#ifdef HAVE_WRITEV
struct iovec v[2];
#endif
/* are we tracing? */
/* check that he can receive trace tokens first */
if (ei_distversion(fd) > 0)
token = ei_trace(0,(erlang_trace *)NULL);
/* header = REG_SEND, from, cookie, toname max sizes: */
ei_encode_version(header,&index); /* 1 */
if (token) {
ei_encode_tuple_header(header,&index,5); /* 2 */
ei_encode_long(header,&index,ERL_REG_SEND_TT); /* 2 */
} else {
ei_encode_tuple_header(header,&index,4);
ei_encode_long(header,&index,ERL_REG_SEND);
}
ei_encode_pid(header,&index,from); /* 268 */
ei_encode_atom(header,&index,"" /*ei_getfdcookie(ec, fd)*/ ); /* 258 */
ei_encode_atom(header,&index,to); /* 268 */
if (token) ei_encode_trace(header,&index,token); /* 534 */
/* control message (precedes header actually) */
/* length = 1 ('p') + header len + message len */
s = header;
put32be(s, index + msglen - 4); /* 4 */
put8(s, ERL_PASS_THROUGH); /* 1 */
/*** sum: 1336 */
#ifdef DEBUG_DIST
if (ei_trace_distribution > 0) ei_show_sendmsg(stderr,header,msg);
#endif
#ifdef HAVE_WRITEV
v[0].iov_base = (char *)header;
v[0].iov_len = index;
v[1].iov_base = (char *)msg;
v[1].iov_len = msglen;
if (writev(fd,v,2) != index+msglen) return -1;
#else
/* no writev() */
if (writesocket(fd,header,index) != index) return -1;
if (writesocket(fd,msg,msglen) != msglen) return -1;
#endif
return 0;
}
/**
* @brief Send :ok back to Elixir
*/
static void send_ok_response()
{
char resp[256];
int resp_index = sizeof(uint16_t); // Space for payload size
ei_encode_version(resp, &resp_index);
ei_encode_atom(resp, &resp_index, "ok");
erlcmd_send(resp, resp_index);
}
ETERM *erl_global_whereis(int fd, const char *name, char *node)
{
char buf[EISMALLBUF];
char *bufp=buf;
char tmpbuf[64];
int index = 0;
erlang_pid *self = erl_self();
erlang_pid epid;
ETERM *opid;
erlang_msg msg;
int i;
int version,arity,msglen;
self->num = fd; /* FIXME looks strange to change something?! */
ei_encode_version(buf,&index);
ei_encode_tuple_header(buf,&index,2);
ei_encode_pid(buf,&index,self); /* PidFrom */
ei_encode_tuple_header(buf,&index,5);
ei_encode_atom(buf,&index,"call"); /* call */
ei_encode_atom(buf,&index,"global"); /* Mod */
ei_encode_atom(buf,&index,"whereis_name"); /* Fun */
ei_encode_list_header(buf,&index,1); /* Args: [ name ] */
ei_encode_atom(buf,&index,name);
ei_encode_empty_list(buf,&index);
ei_encode_atom(buf,&index,"user"); /* user */
/* make the rpc call */
if (ei_send_reg_encoded(fd,self,"rex",buf,index)) return NULL;
while (1) {
index = EISMALLBUF;
if (!(i = ei_recv_internal(fd,&bufp,&index,&msg,&msglen,1,0))) continue;
else break;
}
if (i != ERL_SEND) return NULL;
/* expecting { rex, pid } */
index = 0;
if (ei_decode_version(buf,&index,&version)
|| ei_decode_tuple_header(buf,&index,&arity)
|| (arity != 2)
|| ei_decode_atom(buf,&index,tmpbuf)
|| strcmp(tmpbuf,"rex")
|| ei_decode_pid(buf,&index,&epid))
return NULL; /* bad response from other side */
/* put the pid into a format for the caller */
index = 0;
ei_encode_pid(buf,&index,&epid);
opid = erl_decode((unsigned char*)buf);
/* extract the nodename for the caller */
if (node) strcpy(node,epid.node);
return opid;
}
/**
* @brief Send a response of the form {:error, reason}
*
* @param reason a reason (sent back as an atom)
*/
static void send_error_response(const char *reason)
{
char resp[256];
int resp_index = sizeof(uint16_t); // Space for payload size
ei_encode_version(resp, &resp_index);
ei_encode_tuple_header(resp, &resp_index, 2);
ei_encode_atom(resp, &resp_index, "error");
ei_encode_atom(resp, &resp_index, reason);
erlcmd_send(resp, resp_index);
}
static ErlDrvSSizeT encode_error(char* buf, char* error) {
int index = 0;
if (ei_encode_version(buf, &index) ||
ei_encode_tuple_header(buf, &index, 2) ||
ei_encode_atom(buf, &index, "error") ||
ei_encode_atom(buf, &index, error)) {
return (ErlDrvSSizeT)ERL_DRV_ERROR_GENERAL;
}
return index+1;
}
int ei_send_exit_tmo(int fd, const erlang_pid *from, const erlang_pid *to,
const char *reason, unsigned ms)
{
char sbuf[EISMALLBUF];
erlang_trace *token = NULL;
char *dbuf = NULL;
char *msgbuf;
char *s;
int index = 0;
int len = strlen(reason) + 1080; /* see below */
if (len > EISMALLBUF)
if (!(dbuf = malloc(len)))
return -1;
msgbuf = (dbuf ? dbuf : sbuf);
/* are we tracing? */
/* check that he can receive trace tokens first */
if (ei_distversion(fd) > 0) token = ei_trace(0,NULL);
index = 5; /* max sizes: */
ei_encode_version(msgbuf,&index); /* 1 */
if (token) {
ei_encode_tuple_header(msgbuf,&index,5); /* 2 */
ei_encode_long(msgbuf,&index,ERL_EXIT_TT); /* 2 */
}
else {
ei_encode_tuple_header(msgbuf,&index,4);
ei_encode_long(msgbuf,&index,ERL_EXIT);
}
ei_encode_pid(msgbuf,&index,from); /* 268 */
ei_encode_pid(msgbuf,&index,to); /* 268 */
if (token) ei_encode_trace(msgbuf,&index,token); /* 534 */
/* Reason */
ei_encode_string(msgbuf,&index,reason); /* len */
/* 5 byte header missing */
s = msgbuf;
put32be(s, index - 4); /* 4 */
put8(s, ERL_PASS_THROUGH); /* 1 */
/*** sum: len + 1080 */
/* FIXME incorrect level */
if (ei_tracelevel > 1)
ei_show_sendmsg(stderr,msgbuf,NULL);
ei_write_fill_t(fd,msgbuf,index,ms);
/* FIXME ignore timeout etc? erl_errno?! */
if (dbuf) free(dbuf);
return 0;
}
static ErlDrvSSizeT test_drv_call(ErlDrvData drv_data, unsigned int command, char *buf, ErlDrvSizeT len, char **rbuf, ErlDrvSizeT rlen, unsigned int *flags) {
int index = 0, vsn;
char arg, res;
ei_decode_version(buf, &index, &vsn);
ei_decode_char(buf, &index, &arg);
res = (char) do_f((char) command, arg);
index = 0;
ei_encode_version(*rbuf, &index);
ei_encode_char(*rbuf, &index, res);
return index+1;
}
static void enumerate_ports()
{
struct serial_info *port_list = find_serialports();
int port_list_len = 0;
for (struct serial_info *port = port_list;
port != NULL;
port = port->next)
port_list_len++;
debug("Found %d ports", port_list_len);
char resp[4096];
int resp_index = sizeof(uint16_t); // Space for payload size
resp[resp_index++] = response_id;
ei_encode_version(resp, &resp_index);
ei_encode_map_header(resp, &resp_index, port_list_len);
for (struct serial_info *port = port_list;
port != NULL;
port = port->next) {
ei_encode_binary(resp, &resp_index, port->name, strlen(port->name));
int info_count = (port->description ? 1 : 0) +
(port->manufacturer ? 1 : 0) +
(port->serial_number ? 1 : 0) +
(port->vid > 0 ? 1 : 0) +
(port->pid > 0 ? 1 : 0);
ei_encode_map_header(resp, &resp_index, info_count);
if (port->description) {
ei_encode_atom(resp, &resp_index, "description");
ei_encode_binary(resp, &resp_index, port->description, strlen(port->description));
}
if (port->manufacturer) {
ei_encode_atom(resp, &resp_index, "manufacturer");
ei_encode_binary(resp, &resp_index, port->manufacturer, strlen(port->manufacturer));
}
if (port->serial_number) {
ei_encode_atom(resp, &resp_index, "serial_number");
ei_encode_binary(resp, &resp_index, port->serial_number, strlen(port->serial_number));
}
if (port->vid > 0) {
ei_encode_atom(resp, &resp_index, "vendor_id");
ei_encode_ulong(resp, &resp_index, port->vid);
}
if (port->pid > 0) {
ei_encode_atom(resp, &resp_index, "product_id");
ei_encode_ulong(resp, &resp_index, port->pid);
}
}
erlcmd_send(resp, resp_index);
serial_info_free_list(port_list);
}
void
erl_lua_tonumber(lua_drv_t *driver_data, char *buf, int index)
{
long i;
double res;
int encode_i = 0;
int size;
char *eibuf;
ei_decode_long(buf, &index, &i);
res = lua_tonumber(driver_data->L, i);
ei_encode_version(NULL, &encode_i);
if ((long long) res == res) {
ei_encode_longlong(NULL, &encode_i, (long long) res);
size = encode_i;
encode_i = 0;
eibuf = malloc(sizeof(char) * (size + 1));
ei_encode_version(eibuf, &encode_i);
ei_encode_longlong(eibuf, &encode_i, res);
} else {
ei_encode_double(NULL, &encode_i, res);
size = encode_i;
encode_i = 0;
eibuf = malloc(sizeof(char) * (size + 1));
ei_encode_version(eibuf, &encode_i);
ei_encode_double(eibuf, &encode_i, res);
}
ErlDrvTermData spec[] = {
ERL_DRV_ATOM, ATOM_OK,
ERL_DRV_BUF2BINARY, (ErlDrvTermData) eibuf, size,
ERL_DRV_TUPLE, 2
};
erl_drv_output_term(driver_data->drvport, spec, sizeof(spec) / sizeof(spec[0]));
free(eibuf);
}
static int mn_send_write(int fd, erlang_pid *mnesia, const char *key, ei_reg_obj *obj)
{
char sbuf[EISMALLBUF];
char *dbuf = NULL;
char *msgbuf;
int index = 0;
int keylen = strlen(key) + 1;
int len = 32 + keylen + obj->size;
if (len > EISMALLBUF)
if (!(dbuf = malloc(len)))
return -1;
msgbuf = (dbuf ? dbuf : sbuf);
ei_encode_version(msgbuf,&index);
ei_encode_tuple_header(msgbuf,&index,6);
ei_encode_atom(msgbuf,&index,EI_MNESIA_WRITE);
ei_encode_string(msgbuf,&index,key);
ei_encode_long(msgbuf,&index,keylen);
ei_encode_long(msgbuf,&index,obj->attr);
ei_encode_long(msgbuf,&index,obj->size);
switch (ei_reg_typeof(obj)) {
case EI_INT:
ei_encode_long(msgbuf,&index,obj->val.i);
break;
case EI_FLT:
ei_encode_double(msgbuf,&index,obj->val.f);
break;
case EI_STR:
if (obj->size > 0) ei_encode_string(msgbuf,&index,obj->val.s);
else ei_encode_long(msgbuf,&index, (long)NULL); /* just the NULL pointer */
break;
case EI_BIN:
if (obj->size > 0) ei_encode_binary(msgbuf,&index,obj->val.p,obj->size);
else ei_encode_long(msgbuf,&index,(long)(obj->val.p)); /* just the pointer */
break;
default:
if (dbuf) free(dbuf);
return -1;
}
/* send it */
if (ei_send_encoded(fd,mnesia,msgbuf,index)) {
if (dbuf) free(dbuf);
return -1;
}
if (dbuf) free(dbuf);
return 0;
}
/* Called when uart_read completes or fails */
static void handle_read_completed(int rc, const uint8_t *data, size_t len)
{
if (rc >= 0) {
char *resp = malloc(32 + len);
int resp_index = sizeof(uint16_t);
ei_encode_version(resp, &resp_index);
ei_encode_tuple_header(resp, &resp_index, 2);
ei_encode_atom(resp, &resp_index, "ok");
ei_encode_binary(resp, &resp_index, data, len);
erlcmd_send(resp, resp_index);
free(resp);
} else
send_error_response(uart_last_error());
}
static void handle_configuration(const char *req, int *req_index)
{
char resp[256];
int resp_index = sizeof(uint16_t); // Space for payload size
resp[resp_index++] = response_id;
ei_encode_version(resp, &resp_index);
ei_encode_list_header(resp, &resp_index, 5);
ei_encode_tuple_header(resp, &resp_index, 2);
ei_encode_atom(resp, &resp_index, "speed");
ei_encode_long(resp, &resp_index, current_config.speed);
ei_encode_tuple_header(resp, &resp_index, 2);
ei_encode_atom(resp, &resp_index, "data_bits");
ei_encode_long(resp, &resp_index, current_config.data_bits);
ei_encode_tuple_header(resp, &resp_index, 2);
ei_encode_atom(resp, &resp_index, "stop_bits");
ei_encode_long(resp, &resp_index, current_config.stop_bits);
ei_encode_tuple_header(resp, &resp_index, 2);
ei_encode_atom(resp, &resp_index, "parity");
switch (current_config.parity) {
default:
case UART_PARITY_NONE: ei_encode_atom(resp, &resp_index, "none"); break;
case UART_PARITY_EVEN: ei_encode_atom(resp, &resp_index, "even"); break;
case UART_PARITY_ODD: ei_encode_atom(resp, &resp_index, "odd"); break;
case UART_PARITY_SPACE: ei_encode_atom(resp, &resp_index, "space"); break;
case UART_PARITY_MARK: ei_encode_atom(resp, &resp_index, "mark"); break;
case UART_PARITY_IGNORE: ei_encode_atom(resp, &resp_index, "ignore"); break;
}
ei_encode_tuple_header(resp, &resp_index, 2);
ei_encode_atom(resp, &resp_index, "flow_control");
switch (current_config.parity) {
default:
case UART_FLOWCONTROL_NONE: ei_encode_atom(resp, &resp_index, "none"); break;
case UART_FLOWCONTROL_HARDWARE: ei_encode_atom(resp, &resp_index, "hardware"); break;
case UART_FLOWCONTROL_SOFTWARE: ei_encode_atom(resp, &resp_index, "software"); break;
}
ei_encode_empty_list(resp, &resp_index);
erlcmd_send(resp, resp_index);
}
int oe_ei_encode_version(CORBA_Environment *ev) {
int size = ev->_iout + __OE_VSNSZ__;
if (size >= ev->_outbufsz) {
char *buf = ev->_outbuf;
int bufsz = ev->_outbufsz + ev->_memchunk;
if ((buf = realloc(buf,bufsz)) != NULL) {
ev->_outbuf = buf;
ev->_outbufsz += ev->_memchunk;
}
else {
CORBA_exc_set(ev, CORBA_SYSTEM_EXCEPTION, NO_MEMORY, "End of heap memory while encoding");
return -1; /* OUT OF MEMORY */
}
}
return ei_encode_version(ev->_outbuf, &ev->_iout);
}
/* Called in active mode when there's a read or an error */
static void handle_notify_read(int error_reason, const uint8_t *data, size_t len)
{
char *resp = malloc(64 + len);
int resp_index = sizeof(uint16_t);
ei_encode_version(resp, &resp_index);
ei_encode_tuple_header(resp, &resp_index, 2);
ei_encode_atom(resp, &resp_index, "notif");
if (error_reason == 0) {
// Normal receive
ei_encode_binary(resp, &resp_index, data, len);
} else {
// Error notification
ei_encode_tuple_header(resp, &resp_index, 2);
ei_encode_atom(resp, &resp_index, "error");
ei_encode_atom(resp, &resp_index, uart_last_error());
}
erlcmd_send(resp, resp_index);
free(resp);
}
static int mn_send_commit(int fd, erlang_pid *mnesia, erlang_pid *self)
{
char buf[EISMALLBUF];
char *bufp=buf;
char string[256];
int index = 0;
int version,arity;
int msglen;
erlang_msg msg;
int i;
/* set up commit message { commit, self() } */
ei_encode_version(buf,&index);
ei_encode_tuple_header(buf,&index,2);
ei_encode_atom(buf,&index,EI_MNESIA_COMMIT);
ei_encode_pid(buf,&index,self);
/* send it */
if (ei_send_encoded(fd,mnesia,buf,index)) return -1;
/* get reply */
while (1) {
index = EISMALLBUF;
if (!(i=ei_recv_internal(fd,&bufp,&index,&msg,&msglen,1,0))) continue;
else if (i < 0) return -1;
else break;
}
if (i == ERL_SEND) {
index = 0;
if (ei_decode_version(buf,&index,&version)
|| ei_decode_tuple_header(buf,&index,&arity)
|| ei_decode_atom(buf,&index,string))
return -1;
if (!strcmp(string,"ok")) return 0;
}
/* wrong message type */
return -1;
}
static ErlDrvSSizeT syslogdrv_call(ErlDrvData handle, unsigned int command,
char *buf, ErlDrvSizeT len,
char **rbuf, ErlDrvSizeT rlen, unsigned int* flags)
{
syslogdrv_t* d = (syslogdrv_t*)handle;
int index = 0;
if (command != SYSLOGDRV_CLOSE) {
return (ErlDrvSSizeT)ERL_DRV_ERROR_BADARG;
}
if (d->ident) {
driver_free(d->ident);
}
d->ident = NULL;
d->open = 0;
if (ei_encode_version(*rbuf, &index) ||
ei_encode_atom(*rbuf, &index, "ok")) {
return (ErlDrvSSizeT)ERL_DRV_ERROR_GENERAL;
}
return index+1;
}
void ei_link(ei_node_t *ei_node, erlang_pid * from, erlang_pid * to) {
char msgbuf[2048];
char *s;
int index = 0;
index = 5; /* max sizes: */
ei_encode_version(msgbuf, &index); /* 1 */
ei_encode_tuple_header(msgbuf, &index, 3);
ei_encode_long(msgbuf, &index, ERL_LINK);
ei_encode_pid(msgbuf, &index, from); /* 268 */
ei_encode_pid(msgbuf, &index, to); /* 268 */
/* 5 byte header missing */
s = msgbuf;
put32be(s, index - 4); /* 4 */
put8(s, ERL_PASS_THROUGH); /* 1 */
/* sum: 542 */
if (write(ei_node->nodefd, msgbuf, index) == -1) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Failed to link to process on %s\n", ei_node->peer_nodename);
}
}
static void
enm_stop(ErlDrvData drv_data)
{
EnmData* d = (EnmData*)drv_data;
EnmRecv* rcv = d->waiting_recvs;
ErlDrvTermData port = driver_mk_port(d->port);
char refbuf[64];
int index;
enm_write_select(d, 0);
enm_read_select(d, 0);
while (rcv != 0) {
EnmRecv* p = rcv;
if (driver_demonitor_process(d->port, &rcv->monitor) == 0) {
index = 0;
ei_encode_version(refbuf, &index);
ei_encode_ref(refbuf, &index, &rcv->ref);
{
ErlDrvTermData term[] = {
ERL_DRV_EXT2TERM, (ErlDrvTermData)refbuf, index+1,
ERL_DRV_ATOM, driver_mk_atom("error"),
ERL_DRV_ATOM, enm_errno_atom(ETERM),
ERL_DRV_TUPLE, 2,
ERL_DRV_TUPLE, 2,
};
erl_drv_send_term(port, rcv->rcvr, term,
sizeof term/sizeof *term);
}
}
rcv = rcv->next;
driver_free(p);
}
if (d->fd != -1)
nn_close(d->fd);
d->fd = d->sfd = d->rfd = -1;
driver_free(d);
}
int erl_global_register(int fd, const char *name, ETERM *pid)
{
char buf[EISMALLBUF];
char *bufp=buf;
char tmpbuf[64];
int index = 0;
erlang_pid self;
erlang_msg msg;
int needlink, needatom, needmonitor;
int arity;
int version;
int msglen;
int i;
/* get that pid into a better format */
if (!erl_encode(pid,(unsigned char*)buf)) return -1;
if (ei_decode_version(buf,&index,&version)
|| ei_decode_pid(buf,&index,&self)) return -1;
/* set up rpc arguments */
/* { PidFrom, { call, Mod, Fun, Args, user }} */
index = 0;
ei_encode_version(buf,&index);
ei_encode_tuple_header(buf,&index,2);
ei_encode_pid(buf,&index,&self); /* PidFrom */
ei_encode_tuple_header(buf,&index,5);
ei_encode_atom(buf,&index,"call"); /* call */
ei_encode_atom(buf,&index,"global"); /* Mod */
ei_encode_atom(buf,&index,"register_name_external"); /* Fun */
ei_encode_list_header(buf,&index,3); /* Args: [ name, self(), cnode ] */
ei_encode_atom(buf,&index,name);
ei_encode_pid(buf,&index,&self);
ei_encode_tuple_header(buf,&index,2);
ei_encode_atom(buf,&index,"global"); /* special "resolve" treatment */
ei_encode_atom(buf,&index,"cnode"); /* i.e. we get a SEND when conflict */
ei_encode_empty_list(buf,&index);
ei_encode_atom(buf,&index,"user"); /* user */
/* make the rpc call */
if (ei_send_reg_encoded(fd,&self,"rex",buf,index)) return -1;
/* get the reply: expect link and an atom, or just an atom */
needlink = needatom = needmonitor = 1;
while (1) {
/* get message */
while (1) {
index = EISMALLBUF;
if (!(i = ei_recv_internal(fd,&bufp,&index,&msg,&msglen,1,0))) continue;
else break;
}
switch (i) {
case ERL_LINK:
/* got link */
if (!needlink) return -1;
needlink = 0;
break;
case ERL_MONITOR_P-10:
/* got monitor */
if (!needmonitor) { return -1;}
needmonitor = 0;
break;
case ERL_SEND:
/* got message - does it contain our atom? */
if (!needatom) return -1;
else {
/* expecting { rex, yes } */
index = 0;
if (ei_decode_version(buf,&index,&version)
|| ei_decode_tuple_header(buf,&index,&arity)
|| (arity != 2)
|| ei_decode_atom(buf,&index,tmpbuf)
|| strcmp(tmpbuf,"rex")
|| ei_decode_atom(buf,&index,tmpbuf)
|| strcmp(tmpbuf,"yes"))
return -1; /* bad response from other side */
/* we're done */
return 0;
}
break;
default:
return -1; /* something else */
}
}
return 0;
}
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 ei_send_encoded_tmo(int fd, const erlang_pid *to,
char *msg, int msglen, unsigned ms)
{
char *s, header[1200]; /* see size calculation below */
erlang_trace *token = NULL;
int index = 5; /* reserve 5 bytes for control message */
int res;
#ifdef HAVE_WRITEV
struct iovec v[2];
#endif
/* are we tracing? */
/* check that he can receive trace tokens first */
if (ei_distversion(fd) > 0) token = ei_trace(0,NULL);
/* header = SEND, cookie, to max sizes: */
ei_encode_version(header,&index); /* 1 */
if (token) {
ei_encode_tuple_header(header,&index,4); /* 2 */
ei_encode_long(header,&index,ERL_SEND_TT); /* 2 */
} else {
ei_encode_tuple_header(header,&index,3);
ei_encode_long(header,&index,ERL_SEND);
}
ei_encode_atom(header,&index,ei_getfdcookie(fd)); /* 258 */
ei_encode_pid(header,&index,to); /* 268 */
if (token) ei_encode_trace(header,&index,token); /* 534 */
/* control message (precedes header actually) */
/* length = 1 ('p') + header len + message len */
s = header;
put32be(s, index + msglen - 4); /* 4 */
put8(s, ERL_PASS_THROUGH); /* 1 */
/*** sum: 1070 */
if (ei_tracelevel >= 4)
ei_show_sendmsg(stderr,header,msg);
#ifdef HAVE_WRITEV
v[0].iov_base = (char *)header;
v[0].iov_len = index;
v[1].iov_base = (char *)msg;
v[1].iov_len = msglen;
if ((res = ei_writev_fill_t(fd,v,2,ms)) != index+msglen) {
erl_errno = (res == -2) ? ETIMEDOUT : EIO;
return -1;
}
#else /* !HAVE_WRITEV */
if ((res = ei_write_fill_t(fd,header,index,ms)) != index) {
erl_errno = (res == -2) ? ETIMEDOUT : EIO;
return -1;
}
if ((res = ei_write_fill_t(fd,msg,msglen,ms)) != msglen) {
erl_errno = (res == -2) ? ETIMEDOUT : EIO;
return -1;
}
#endif /* !HAVE_WRITEV */
return 0;
}
int ei_reg_restore(int fd, ei_reg *reg, const char *mntab)
{
int i,j;
char tag[32];
char sbuf[EISMALLBUF];
char *dbuf = NULL;
char *msgbuf = NULL;
char *keybuf = NULL;
erlang_pid self;
erlang_pid mnesia = {"",0,0,0};
erlang_msg msg;
int index = 0;
int len = 0;
int msglen;
int version = 0;
int arity = 0;
long count = 0;
long maxkey = 0;
long maxobj = 0;
ei_cnode *ec;
if (!reg || !mntab) return -1; /* return EI_BADARG; */
/* make a self pid */
if ((ec = ei_fd_to_cnode(fd)) == NULL) {
return -1;
}
strcpy(self.node,ei_thisnodename(ec));
self.num = fd;
self.serial = 0;
self.creation = ei_thiscreation(ec);
if (mn_start_restore(fd,&self,&mnesia,mntab,&count,&maxkey,&maxobj)) {
/* send exit *only* if we have pid */
if (mnesia.node[0]) ei_send_exit(fd,&self,&mnesia,"bad response from rpc start");
return -1;
}
if (count <= 0) {
ei_send_exit(fd,&self,&mnesia,"nothing to do");
return 0;
}
/* make sure receive buffer can handle largest expected message */
len = maxkey + maxobj + 512;
if (len > EISMALLBUF)
if (!(dbuf = malloc(len))) {
ei_send_exit(fd,&self,&mnesia,"cannot allocate space for incoming data");
return -1;
}
msgbuf = (dbuf ? dbuf : sbuf);
/* allocate space for largest key */
if (!(keybuf = malloc(maxkey+1))) goto restore_failure;
/* get this ball rolling */
index = 0;
ei_encode_version(msgbuf,&index);
ei_encode_tuple_header(msgbuf,&index,2);
ei_encode_atom(msgbuf,&index,"send_records");
ei_encode_pid(msgbuf,&index,&self);
if (ei_send_encoded(fd,&mnesia,msgbuf,index)) goto restore_failure;
/* read as much as possible, until count or EXIT */
for (i=0; i<count; i++) {
index = len;
while ((j = ei_recv_internal(fd,&msgbuf,&index,&msg,&msglen,1,0)) == 0) index = len;
if (j<0) goto restore_failure;
/* decode the first part of the message */
index = 0;
if ((msg.msgtype != ERL_SEND)
|| ei_decode_version(msgbuf,&index,&version)
|| ei_decode_tuple_header(msgbuf,&index,&arity)
|| (arity != 6)
|| ei_decode_atom(msgbuf,&index,tag)
|| strcmp(tag,EI_MNESIA_RECV))
goto restore_failure;
/* decode the rest of the message and insert data into table */
if (mn_decode_insert(reg,msgbuf,&index,keybuf)) goto restore_failure;
}
if (keybuf) free(keybuf);
if (dbuf) free(dbuf);
/* wait for unlink */
if (mn_unlink(fd)) return -1;
/* clear all the dirty bits */
ei_hash_foreach(reg->tab,clean_obj);
/* success */
return 0;
restore_failure:
ei_send_exit(fd,&self,&mnesia,"restore failure");
if (keybuf) free(keybuf);
if (dbuf) free(dbuf);
return -1;
}
static int mn_start_restore(int fd, const erlang_pid *self, erlang_pid *mnesia, const char *mntab, long *count, long *maxkey,long *maxobj)
{
char buf[EISMALLBUF];
char *bufp=buf;
char tmpbuf[64];
int index = 0;
erlang_msg msg;
int arity;
int version;
int i;
int needlink;
int needmsg;
int msglen;
/* set up rpc arguments */
/* { PidFrom, { call, Mod, Fun, Args, user }} */
ei_encode_version(buf,&index);
ei_encode_tuple_header(buf,&index,2);
ei_encode_pid(buf,&index,self); /* PidFrom */
ei_encode_tuple_header(buf,&index,5);
ei_encode_atom(buf,&index,"call"); /* call */
ei_encode_atom(buf,&index,EI_MNESIA_MODULE); /* Mod */
ei_encode_atom(buf,&index,EI_MNESIA_RESTORE); /* Fun */
ei_encode_list_header(buf,&index,2); /* Args: [ table, self() ] */
ei_encode_atom(buf,&index,mntab);
ei_encode_pid(buf,&index,self);
ei_encode_empty_list(buf,&index);
ei_encode_atom(buf,&index,"user"); /* user */
/* make the rpc call */
if (ei_send_reg_encoded(fd,self,"rex",buf,index)) return -1;
/* get the reply: expect link and message (not sure which will come first though) */
needlink = needmsg = 1;
while (needlink || needmsg) {
/* get message */
index = EISMALLBUF;
while (!(i = ei_recv_internal(fd,&bufp,&index,&msg,&msglen,1,0))) index = EISMALLBUF;
switch (i) {
case ERL_LINK:
/* got link */
if (!needlink) return -1;
needlink = 0;
break;
case ERL_SEND:
/* got message - is it the right one? */
if (!needmsg) return -1;
else {
/* expecting { rex, { size, Pid, Count, MaxKey, MaxObj }} */
index = 0;
if (ei_decode_version(buf,&index,&version)
|| ei_decode_tuple_header(buf,&index,&arity)
|| (arity != 2)
|| ei_decode_atom(buf,&index,tmpbuf)
|| strcmp(tmpbuf,"rex")
|| ei_decode_tuple_header(buf,&index,&arity)
|| (arity != 5)
|| ei_decode_atom(buf,&index,tmpbuf)
|| strcmp(tmpbuf,EI_MNESIA_SIZE)
|| ei_decode_pid(buf,&index,mnesia)
|| ei_decode_long(buf,&index,count)
|| ei_decode_long(buf,&index,maxkey)
|| ei_decode_long(buf,&index,maxobj))
return -1; /* bad response from other side */
/* got msg */
needmsg = 0;
}
break;
default:
return -1; /* wasn't link or pid */
}
}
return 0;
}