//HsBool
HsInt vaskerl_init_connect (char *name, char *ip, char *host,
char *dest, char *cookie)
{
if (fd > -1)
return fd;
struct in_addr addr;
addr.s_addr = inet_addr(ip);
// struct hostent *he = erl_gethostbyname("127.0.0.1");
// printf("... %s\n", he->h_name);
char fullname[256];
sprintf(fullname, "%s@%s", name, host);
erl_init(NULL, 0);
if (erl_connect_xinit(host, name, fullname, &addr, cookie, 0) < 0)
//if (erl_connect_xinit("McHoovy.rd.shawcable.net", "vaskerl",
// "*****@*****.**", &addr,
// cookie, 0) < 0)
erl_err_quit("erl_connect_xinit failed");
printf("node=%s, host=%s, alive=%s, creation=%d\n",
erl_thisnodename(), erl_thishostname(),
erl_thisalivename(), erl_thiscreation());
if ((fd = erl_xconnect(&addr, dest)) < 0)
erl_err_quit("erl_xconnect failed");
return fd;
//return HS_BOOL_TRUE;
}
int main(int argc, char **argv) {
int fd; /* fd to Erlang node */
int loop = 1; /* Loop flag */
int got; /* Result of receive */
unsigned char buf[BUFSIZE]; /* Buffer for incoming message */
ErlMessage emsg; /* Incoming message */
ETERM *fromp, *tuplep, *fnp, *argp, *resp;
int res;
erl_init(NULL, 0);
if (erl_connect_init(1, "secretcookie", 0) == -1)
erl_err_quit("erl_connect_init");
if ((fd = erl_connect("e1@hostname")) < 0)
erl_err_quit("erl_connect");
fprintf(stderr, "Connected to e1@hostname\n\r");
while (loop) {
got = erl_receive_msg(fd, buf, BUFSIZE, &emsg);
if (got == ERL_TICK) {
/* ignore */
} else if (got == ERL_ERROR) {
loop = 0;
} else {
if (emsg.type == ERL_REG_SEND) {
fromp = erl_element(1, emsg.msg);
tuplep = erl_element(2, emsg.msg);
fnp = erl_element(1, tuplep);
argp = erl_element(2, tuplep);
if (strncmp(ERL_ATOM_PTR(fnp), "foo", 3) == 0) {
res = foo(ERL_INT_VALUE(argp));
} else if (strncmp(ERL_ATOM_PTR(fnp), "bar", 3) == 0) {
res = bar(ERL_INT_VALUE(argp));
}
resp = erl_format("{cnode, ~i}", res);
erl_send(fd, fromp, resp);
erl_free_term(emsg.from); erl_free_term(emsg.msg);
erl_free_term(fromp); erl_free_term(tuplep);
erl_free_term(fnp); erl_free_term(argp);
erl_free_term(resp);
}
}
}
}
int main(int argc, char **argv) {
int fd; /* file descriptor of Erlang node */
int loop = 1; /* Loop flag */
int got; /* Result of receive */
unsigned char buf[BUFSIZE]; /* Buffer for incoming message */
ErlMessage emsg; /* Incoming message */
ETERM *fromp, *argp, *resp; /* Reps of Erlang terms */
int res; /* Result of the fac call */
/* initialize erl_interface (once only) */
erl_init(NULL, 0);
/* initialize the connection mechanism */
if (erl_connect_init(1, "refactorcookie", 0) == -1)
erl_err_quit("erl_connect_init");
/* connect to a running Erlang node */
if ((fd = erl_connect("blah@Simon-Thompsons-Computer-2")) < 0)
erl_err_quit("erl_connect");
while (loop) {
/* message received */
got = erl_receive_msg(fd, buf, BUFSIZE, &emsg);
if (got == ERL_TICK) {
/* ignore */
} else if (got == ERL_ERROR) {
loop = 0;
} else {
if (emsg.type == ERL_REG_SEND) {
/* unpack message fields */
fromp = erl_element(1, emsg.msg);
argp = erl_element(2, emsg.msg);
/* call fac and send result back */
resp = erl_format("{ok, ~i}", fac(ERL_INT_VALUE(argp)));
erl_send(fd, fromp, resp);
/* free the term storage used */
erl_free_term(emsg.from); erl_free_term(emsg.msg);
erl_free_term(fromp); erl_free_term(argp);
erl_free_term(resp);
}
}
}
}
void quit_with_error(const char *fmt, ...) {
char buf[512];
va_list ap;
va_start(ap, fmt);
int rv = vsprintf(buf, fmt, ap);
va_end(ap);
erl_err_quit("Erlycairo FATAL ERROR: %s\n", buf);
}
/* -------------------------------------------------- */
int efs_init()
{
int ret, fd;
erl_init(NULL, 0);
if (erl_connect_init(1, "secretcookie", 0) == -1)
erl_err_quit("erl_connect_init");
if ((fd = erl_connect("e1@uss")) < 0)
erl_err_quit("erl_connect");
fprintf(stderr, "Connected to e1@uss\n\r");
erlang_fd = fd;
return 0;
}
int main(int argc, char *argv[])
{
erl_init(NULL, 0);
if (erl_connect_init(1, "secretcookie", 0) == -1)
erl_err_quit("erl_connect_init");
int fd = -1;
if ((fd = erl_connect("nefs@Daniels-MacBook")) < 0)
erl_err_quit("erl_connect");
ferl_state FS={
.erlang_fd = fd
};
fprintf(stderr, "Connected to nefs@Daniels-MacBook\n\r");
erl_rpc(fd,"io","format",erl_format("[ping]"));
int retval = fuse_main(argc, argv, &hello_oper, (void *)&FS);
fprintf(stderr, "Finished\n\r");
return retval;
}
int setup_connection(int number, char* cookie, short creation, char* nodename)
{
int erl_fd;
erl_init(NULL, 0);
if(erl_connect_init(number, cookie, creation) == -1)
{
erl_err_quit("erl_connect_init failed");
}
TRACE(("erl connection initialized"));
erl_fd = erl_connect(nodename);
if (erl_fd < 0)
{
erl_err_quit("erl_connect failed");
}
TRACE(("connected!"));
return erl_fd;
}
int main(int argc, char **argv) {
int port; // Listen port number
int fd; // Socket descriptor
int listen; // Listen socket
ErlConnect conn; // Connection data
char *cookie; // Erlang magic cookie
pid_t pid;
int x;
pthread_t thread;
pthread_attr_t thread_attrs;
thread_data_t *data; // Per thread data: thread ID,
// connection node name
static unsigned int tidx = 0;
pid = fork();
if (pid < 0)
exit(EXIT_FAILURE);
if (pid > 0)
exit(EXIT_SUCCESS);
if (setsid() < 0)
exit(EXIT_FAILURE);
umask(0);
chdir("/");
signal(SIGCHLD, SIG_DFL);
signal(SIGHUP, SIG_DFL);
if (argc == 3)
{
port = atoi(argv[1]);
cookie = argv[2];
} else {
fprintf(stderr, "Usage: %s <port number> <erlang secret cookie>\n\r",argv[0]);
exit(EXIT_FAILURE);
}
for (x = sysconf(_SC_OPEN_MAX); x>0; x--)
close (x);
setlogmask (LOG_UPTO (LOG_NOTICE));
openlog("nfq_node", LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL0);
erl_init(NULL, 0);
if (erl_connect_init(1, cookie, 0) == -1)
erl_err_quit("erl_connect_init");
if ((listen = my_listen(port)) <= 0)
erl_err_quit("my_listen");
if (erl_publish(port) == -1)
erl_err_quit("erl_publish");
if (pthread_attr_init(&thread_attrs)) {
syslog(LOG_ERR, "error while init pthread attr struct\n\r");
exit(EXIT_FAILURE);
}
if ((pthread_attr_setdetachstate(&thread_attrs, PTHREAD_CREATE_DETACHED))) {
syslog(LOG_ERR, "error while set pthread attributes\n\r");
exit(EXIT_FAILURE);
}
syslog(LOG_NOTICE,"Waiting for connections...\n\r");
for(;;) {
while((fd = erl_accept(listen, &conn)) == ERL_ERROR)
syslog(LOG_ERR,"%s Connection error\n\r", argv[0]);
if((data = (thread_data_t *)malloc(sizeof(thread_data_t))) == NULL) {
syslog(LOG_ERR, "Memory allocation error\n\r");
exit(EXIT_FAILURE);
}
if((data->node = (char *)malloc(strlen(conn.nodename)+1)) == NULL) {
syslog(LOG_ERR, "Memory allocation error\n\r");
exit(EXIT_FAILURE);
}
data->fd = fd;
data->idx = tidx;
strcpy(data->node, conn.nodename);
if (pthread_create(&thread, &thread_attrs, erl_message_read_loop, data)) {
syslog(LOG_ERR, "Thread create failure\n\r");
exit(EXIT_FAILURE);
}
tidx++;
}
closelog();
return 0;
}
int main(void)
#endif
{
ei_x_buff eix;
int index = 0;
ETERM **etermpp = NULL, *etermp = NULL;
char *charp = NULL;
unsigned char uchar, **ucharpp = NULL, *ucharp = NULL;
void *voidp = NULL;
Erl_Heap *erl_heapp = NULL;
int intx = 0;
int *intp = NULL;
unsigned int uintx, *uintp;
unsigned long *ulongp = NULL;
long longx = 0;
double doublex = 0.0;
short shortx = 42;
FILE *filep = NULL;
Erl_IpAddr erl_ipaddr = NULL;
ErlMessage *erlmessagep = NULL;
ErlConnect *erlconnectp = NULL;
struct hostent *hostp = NULL;
struct in_addr *inaddrp = NULL;
/* Converion to erl_interface format is in liberl_interface */
intx = erl_errno;
ei_encode_term(charp, &index, voidp);
ei_x_encode_term(&eix, voidp);
ei_decode_term(charp, &index, voidp);
erl_init(voidp, longx);
erl_connect_init(intx, charp,shortx);
erl_connect_xinit(charp,charp,charp,erl_ipaddr,charp,shortx);
erl_connect(charp);
erl_xconnect(erl_ipaddr,charp);
erl_close_connection(intx);
erl_receive(intx, ucharp, intx);
erl_receive_msg(intx, ucharp, intx, erlmessagep);
erl_xreceive_msg(intx, ucharpp, intp, erlmessagep);
erl_send(intx, etermp, etermp);
erl_reg_send(intx, charp, etermp);
erl_rpc(intx,charp,charp,etermp);
erl_rpc_to(intx,charp,charp,etermp);
erl_rpc_from(intx,intx,erlmessagep);
erl_publish(intx);
erl_accept(intx,erlconnectp);
erl_thiscookie();
erl_thisnodename();
erl_thishostname();
erl_thisalivename();
erl_thiscreation();
erl_unpublish(charp);
erl_err_msg(charp);
erl_err_quit(charp);
erl_err_ret(charp);
erl_err_sys(charp);
erl_cons(etermp,etermp);
erl_copy_term(etermp);
erl_element(intx,etermp);
erl_hd(etermp);
erl_iolist_to_binary(etermp);
erl_iolist_to_string(etermp);
erl_iolist_length(etermp);
erl_length(etermp);
erl_mk_atom(charp);
erl_mk_binary(charp,intx);
erl_mk_empty_list();
erl_mk_estring(charp, intx);
erl_mk_float(doublex);
erl_mk_int(intx);
erl_mk_list(etermpp,intx);
erl_mk_pid(charp,uintx,uintx,uchar);
erl_mk_port(charp,uintx,uchar);
erl_mk_ref(charp,uintx,uchar);
erl_mk_long_ref(charp,uintx,uintx,uintx,uchar);
erl_mk_string(charp);
erl_mk_tuple(etermpp,intx);
erl_mk_uint(uintx);
erl_mk_var(charp);
erl_print_term(filep,etermp);
/* erl_sprint_term(charp,etermp); */
erl_size(etermp);
erl_tl(etermp);
erl_var_content(etermp, charp);
erl_format(charp);
erl_match(etermp, etermp);
erl_global_names(intx, intp);
erl_global_register(intx, charp, etermp);
erl_global_unregister(intx, charp);
erl_global_whereis(intx, charp, charp);
erl_init_malloc(erl_heapp,longx);
erl_alloc_eterm(uchar);
erl_eterm_release();
erl_eterm_statistics(ulongp,ulongp);
erl_free_array(etermpp,intx);
erl_free_term(etermp);
erl_free_compound(etermp);
erl_malloc(longx);
erl_free(voidp);
erl_compare_ext(ucharp, ucharp);
erl_decode(ucharp);
erl_decode_buf(ucharpp);
erl_encode(etermp,ucharp);
erl_encode_buf(etermp,ucharpp);
erl_ext_size(ucharp);
erl_ext_type(ucharp);
erl_peek_ext(ucharp,intx);
erl_term_len(etermp);
erl_gethostbyname(charp);
erl_gethostbyaddr(charp, intx, intx);
erl_gethostbyname_r(charp, hostp, charp, intx, intp);
erl_gethostbyaddr_r(charp, intx, intx, hostp, charp, intx, intp);
erl_init_resolve();
erl_distversion(intx);
erl_epmd_connect(inaddrp);
erl_epmd_port(inaddrp, charp, intp);
charp = ERL_ATOM_PTR(etermp);
intx = ERL_ATOM_SIZE(etermp);
ucharp = ERL_BIN_PTR(etermp);
intx = ERL_BIN_SIZE(etermp);
etermp = ERL_CONS_HEAD(etermp);
etermp = ERL_CONS_TAIL(etermp);
intx = ERL_COUNT(etermp);
doublex= ERL_FLOAT_VALUE(etermp);
uintx = ERL_INT_UVALUE(etermp);
intx = ERL_INT_VALUE(etermp);
intx = ERL_IS_ATOM(etermp);
intx = ERL_IS_BINARY(etermp);
intx = ERL_IS_CONS(etermp);
intx = ERL_IS_EMPTY_LIST(etermp);
intx = ERL_IS_FLOAT(etermp);
intx = ERL_IS_INTEGER(etermp);
intx = ERL_IS_LIST(etermp);
intx = ERL_IS_PID(etermp);
intx = ERL_IS_PORT(etermp);
intx = ERL_IS_REF(etermp);
intx = ERL_IS_TUPLE(etermp);
intx = ERL_IS_UNSIGNED_INTEGER(etermp);
uchar = ERL_PID_CREATION(etermp);
charp = ERL_PID_NODE(etermp);
uintx = ERL_PID_NUMBER(etermp);
uintx = ERL_PID_SERIAL(etermp);
uchar = ERL_PORT_CREATION(etermp);
charp = ERL_PORT_NODE(etermp);
uintx = ERL_PORT_NUMBER(etermp);
uchar = ERL_REF_CREATION(etermp);
intx = ERL_REF_LEN(etermp);
charp = ERL_REF_NODE(etermp);
uintx = ERL_REF_NUMBER(etermp);
uintp = ERL_REF_NUMBERS(etermp);
etermp = ERL_TUPLE_ELEMENT(etermp,intx);
intx = ERL_TUPLE_SIZE(etermp);
return
BUFSIZ +
EAGAIN +
EHOSTUNREACH +
EINVAL +
EIO +
EMSGSIZE +
ENOMEM +
ERL_ATOM +
ERL_BINARY +
ERL_ERROR +
ERL_EXIT +
ERL_FLOAT +
ERL_INTEGER +
ERL_LINK +
ERL_LIST +
ERL_MSG +
ERL_NO_TIMEOUT +
ERL_PID +
ERL_PORT +
ERL_REF +
ERL_REG_SEND +
ERL_SEND +
ERL_SMALL_BIG +
ERL_TICK +
ERL_TIMEOUT +
ERL_TUPLE +
ERL_UNLINK +
ERL_U_INTEGER +
ERL_U_SMALL_BIG +
ERL_VARIABLE +
ETIMEDOUT +
MAXNODELEN +
MAXREGLEN;
}
int
main(int argc, char **argv) {
/* int fd; /\* fd to Erlang node *\/ */
int loop = 1; /* Loop flag */
int got; /* Result of receive */
unsigned char buf[BUFSIZE]; /* Buffer for incoming message */
ErlMessage emsg; /* Incoming message */
ETERM *msg_type, *fromp, *refp, *tuplep, *fnp, *arg1p, *arg2p, *resp;
char hostname[255];
char erlang_nodename[255] = "e1@";
erl_init(NULL, 0);
if (erl_connect_init(1, "secretcookie", 0) == -1)
erl_err_quit("erl_connect_init");
/* now we figure out where to connect to */
get_hostname(hostname);
strcat(erlang_nodename, hostname);
strstrip(erlang_nodename);
if ((fd_erlang_node = erl_connect(erlang_nodename)) < 0)
erl_err_quit("erl_connect");
fprintf(stderr, "Connected to %s\n\r",erlang_nodename);
while (loop) {
got = erl_receive_msg(fd_erlang_node, buf, BUFSIZE, &emsg);
if (got == ERL_TICK) {
/* ignore */
} else if (got == ERL_ERROR) {
loop = 0;
} else {
if (emsg.type == ERL_REG_SEND) {
msg_type = erl_element(1, emsg.msg);
fromp = erl_element(2, emsg.msg);
refp = erl_element(3, emsg.msg);
tuplep = erl_element(4, emsg.msg);
fnp = erl_element(1, tuplep);
if (strncmp(ERL_ATOM_PTR(msg_type), "call", 4) == 0) {
/* call expects a msg back */
/* always at least one argument so we get that out first*/
arg1p = erl_element(2, tuplep);
if (strncmp(ERL_ATOM_PTR(fnp), "init", 4) == 0) {
printf("init requested\n");
arg2p = erl_element(3, tuplep);
resp = gpio_init(arg1p, arg2p);
} else if (strncmp(ERL_ATOM_PTR(fnp), "write", 5) == 0) {
arg2p = erl_element(3, tuplep);
/* @todo implement the real impl here */
resp = gpio_write(arg1p, arg2p);
} else if (strncmp(ERL_ATOM_PTR(fnp), "read", 4) == 0) {
resp = gpio_read(arg1p);
} else if (strncmp(ERL_ATOM_PTR(fnp), "set_int", 7) == 0) {
arg2p = erl_element(3, tuplep);
/* @todo implement the real impl here */
resp = gpio_set_int(arg1p, fromp,
handle_gpio_interrupt, arg2p);
} else if (strncmp(ERL_ATOM_PTR(fnp), "release", 7) == 0) {
resp = gpio_release(arg1p);
}
printf("going to send resp: %s\n", ERL_ATOM_PTR(resp));
erl_send(fd_erlang_node, fromp, erl_format("{~w,~w}", refp, resp));
} else if (strncmp(ERL_ATOM_PTR(msg_type), "cast", 4) == 0) {
/* cast does not expect a msg back */
}
erl_free_term(emsg.from); erl_free_term(emsg.msg);
erl_free_term(fromp); erl_free_term(refp);
erl_free_term(tuplep);
erl_free_term(fnp); erl_free_term(arg1p);
erl_free_term(arg2p); erl_free_term(resp);
}
}
}
}
int main(int argc, char **argv) {
struct in_addr addr; /* 32-bit IP number of host */
int port; /* Listen port number */
int listen; /* Listen socket */
int fd; /* fd to Erlang node */
ErlConnect conn; /* Connection data */
int loop = 1; /* Lopp flag */
int got; /* Result of receive */
unsigned char buf[BUFSIZE]; /* Buffer for incoming message */
ErlMessage emsg; /* Incoming message */
ETERM *fromp, *tuplep, *fnp, *argp, *resp;
int res;
port = atoi(argv[1]);
erl_init(NULL, 0);
addr.s_addr = inet_addr("127.0.0.1");
if (erl_connect_xinit("alpha", "cnode", "*****@*****.**",
&addr, "secretcookie", 0) == -1)
erl_err_quit("erl_connect_xinit");
/* Make a listen socket */
if ((listen = my_listen(port)) <= 0)
erl_err_quit("my_listen");
if (erl_publish(port) == -1)
erl_err_quit("erl_publish");
if ((fd = erl_accept(listen, &conn)) == ERL_ERROR)
erl_err_quit("erl_accept");
fprintf(stderr, "Connected to %s\n\r", conn.nodename);
while (loop) {
got = erl_receive_msg(fd, buf, BUFSIZE, &emsg);
if (got == ERL_TICK) {
/* ignore */
} else if (got == ERL_ERROR) {
loop = 0;
} else {
if (emsg.type == ERL_REG_SEND) {
fromp = erl_element(2, emsg.msg);
tuplep = erl_element(3, emsg.msg);
fnp = erl_element(1, tuplep);
argp = erl_element(2, tuplep);
if (strncmp(ERL_ATOM_PTR(fnp), "foo", 3) == 0) {
res = foo(ERL_INT_VALUE(argp));
} else if (strncmp(ERL_ATOM_PTR(fnp), "bar", 3) == 0) {
res = bar(ERL_INT_VALUE(argp));
}
resp = erl_format("{cnode, ~i}", res);
erl_send(fd, fromp, resp);
erl_free_term(emsg.from);
erl_free_term(emsg.msg);
erl_free_term(fromp);
erl_free_term(tuplep);
erl_free_term(fnp);
erl_free_term(argp);
erl_free_term(resp);
}
}
} /* while */
}
void *cnode_run()
{
int fd; /* fd to Erlang node */
int got; /* Result of receive */
unsigned char buf[BUFSIZE]; /* Buffer for incoming message */
ErlMessage emsg; /* Incoming message */
ETERM *uid, *msg;
erl_init(NULL, 0);
if (erl_connect_init(1, "secretcookie", 0) == -1)
erl_err_quit("erl_connect_init");
if ((fd = erl_connect("httpdmaster@localhost")) < 0)
erl_err_quit("erl_connect");
fprintf(stderr, "Connected to httpdmaster@localhost\n\r");
struct evbuffer *evbuf;
while (1) {
got = erl_receive_msg(fd, buf, BUFSIZE, &emsg);
if (got == ERL_TICK) {
continue;
} else if (got == ERL_ERROR) {
fprintf(stderr, "ERL_ERROR from erl_receive_msg.\n");
break;
} else {
if (emsg.type == ERL_REG_SEND) {
fprintf(stderr, "type of emsg is ERL_REG_SEND\n");
// get uid and body data from eg: {123, <<"Hello">>}
uid = erl_element(1, emsg.msg);
msg = erl_element(2, emsg.msg);
char *token = (char *) ERL_BIN_PTR(uid);
char *body = (char *) ERL_BIN_PTR(msg);
int body_len = ERL_BIN_SIZE(msg);
char *cached = fetch_memcached(token);
int userid = atoi(cached);
fprintf(stderr, "memc: %d\n\r", userid);
if(clients[userid]){
fprintf(stderr, "Sending %d bytes to token %s\n", body_len, token);
evbuf = evbuffer_new();
evbuffer_add(evbuf, (const void*)body, (size_t) body_len);
evhttp_send_reply_chunk(clients[userid], evbuf);
evhttp_send_reply_end(clients[userid]);
evbuffer_free(evbuf);
}else{
fprintf(stderr, "Discarding %d bytes to uid %d - user not connected\n",
body_len, userid);
}
free(cached);
erl_free_term(emsg.msg);
erl_free_term(uid);
erl_free_term(msg);
}
}
fprintf(stderr, ".");
}
pthread_exit(0);
}
