static void gen_q_drv_output(ErlDrvData handle, char *buff,
ErlDrvSizeT bufflen) {
GenQData *d = (GenQData*)handle;
QWork* work = genq_alloc_work(buff, bufflen);
if(work->op == FUNC_OPTS) {
LOG("received opts %ld\n", work->op);
copy_qopts((QOpts*)work->data, &d->opts);
genq_free_work(work);
LOG("responding %s\n", "ok");
ei_x_buff ok;
ei_x_new(&ok);
ei_x_encode_ok(&ok);
driver_output(d->port, ok.buff, ok.index);
ei_x_free(&ok);
return;
} else if(work->data == NULL) {
genq_free_work(work);
ei_x_buff error;
ei_x_new(&error);
ei_x_encode_error_tuple_atom(&error, "badarg");
driver_output(d->port, error.buff, error.index);
ei_x_free(&error);
return;
}
work->opts = &d->opts;
driver_async(d->port, work->dispatch_key,
genq_work,
work,
genq_free_work);
}
/* buf is the name of the intented user */
static ErlDrvData setuid_start(ErlDrvPort port, char *buf)
{
char *t;
char xbuf[BUFSIZ];
struct passwd *pe;
if ((t = strchr(buf, ' ')) == NULL)
return (ErlDrvData) -1;
t++;
switch (*t++) {
case 's': /* setuid */
while ((pe = getpwent())) {
if (strcmp(pe->pw_name , t) == 0) {
if ((setuid(pe->pw_uid) != 0) ||
(setreuid(pe->pw_uid, pe->pw_uid) != 0)) {
return (ErlDrvData) -1;
}
sprintf(xbuf, "ok %d", pe->pw_uid);
endpwent();
driver_output(port,xbuf, strlen(xbuf));
return (ErlDrvData) port;
}
}
endpwent();
return (ErlDrvData) -1;
case 'g': /* getuid */
sprintf(xbuf, "ok %d", getuid());
driver_output(port,xbuf, strlen(xbuf));
return (ErlDrvData) port;
case 'u':
while ((pe = getpwent())) {
if (strcmp(pe->pw_name , t) == 0) {
sprintf(xbuf, "ok %d", pe->pw_uid);
endpwent();
driver_output(port,xbuf, strlen(xbuf));
return (ErlDrvData) port;
}
}
endpwent();
return (ErlDrvData) -1;
case 'h':
while ((pe = getpwent())) {
if (strcmp(pe->pw_name , t) == 0) {
sprintf(xbuf, "ok %s", pe->pw_dir);
endpwent();
driver_output(port,xbuf, strlen(xbuf));
return (ErlDrvData) port;
}
}
endpwent();
return (ErlDrvData) -1;
}
}
// function ehecatl_driver_output, hanldes the ouput to erlang, when receives a
// request from it (erlang request)
static void ehecatl_driver_output(ErlDrvData handle, char *buff, int bufflen)
{
erl_port* to_erl_port = (erl_port*)handle;
char fun = buff[0], arg = buff[1], res;
if (fun == 1) {
char* ehecatl_api = (char*)ehecatl_api_sc(arg);
driver_output(to_erl_port->port, ehecatl_api, strlen(ehecatl_api));
} else {
char* ehecatl_api = (char*)ehecatl_api_sc(arg);
driver_output(to_erl_port->port, ehecatl_api, strlen(ehecatl_api));
}
}
bool CCESUT::TradeOrder(PTradeOrderTxnInput pTxnInput,
INT32 iTradeType, bool bExecutorIsAccountOwner) {
ei_x_buff x;
ei_x_new_with_version(&x);
ei_x_encode_tuple_header(&x, 2);
{
ei_x_encode_atom(&x, "ok");
ei_x_encode_tuple_header(&x, 2);
{
ei_x_encode_atom(&x, APP ".BH.TO");
ei_x_encode_tuple_header(&x, 3);
{
m_Encoder.encode(&x, "trade_type", iTradeType);
m_Encoder.encode(&x, "executor_is_account_owner", bExecutorIsAccountOwner);
m_Encoder.encode(&x, *pTxnInput);
}
}
}
int result = driver_output(m_ErlDrvPort, x.buff, x.index);
#ifdef _TRACE
cout << "[TO] ! " << *pTxnInput << ", result=" << result << '\r' << endl;
#endif
ei_x_free(&x);
return result;
}
static int control_control(ErlDrvData port, unsigned command, char* buf, int count,
char** res, int res_size)
{
switch (command) {
case 'e':
if (count > res_size) {
*res = (char *) driver_alloc(count);
}
memcpy(*res, buf, count);
return count;
case 'b':
set_busy_port(erlang_port, buf[0]);
return 0;
case 'i':
driver_output(erlang_port, buf, count);
return 0;
default:
if (command < 256) {
return -1;
} else {
char* p = *res;
int i;
for (i = 3; i >= 0; i--) {
p[i] = command;
command >>= 8;
}
return 4;
}
}
}
static int
state_reply(RegPort* rp, /* Pointer to port structure. */
HKEY root, /* Handle to root key for this key. */
LPSTR name, /* Pointer to name. */
DWORD nameSize) /* Length of name. */
{
char sbuf[512];
char* s = sbuf;
int needed = 1+4+nameSize;
int i;
if (sizeof sbuf < needed) {
s = driver_alloc(needed);
}
s[0] = 's';
i = 1;
put_int32((DWORD) root, s+i);
i += 4;
memcpy(s+i, name, nameSize);
ASSERT(i+nameSize == needed);
driver_output(rp->port, s, needed);
if (s != sbuf) {
driver_free(s);
}
return 1;
}
bool CCESUT::MarketWatch(PMarketWatchTxnInput pTxnInput) {
ei_x_buff x;
ei_x_new_with_version(&x);
ei_x_encode_tuple_header(&x, 2);
{
ei_x_encode_atom(&x, "ok");
ei_x_encode_tuple_header(&x, 2);
{
ei_x_encode_atom(&x, APP ".BH.MW");
m_Encoder.encode(&x, *pTxnInput);
}
}
int result = driver_output(m_ErlDrvPort, x.buff, x.index);
#ifdef _TRACE
cout << "[MW] ! " << *pTxnInput << ", result=" << result << '\r' << endl;
#endif
ei_x_free(&x);
return result;
}
bool CDMSUT::TradeCleanup(PTradeCleanupTxnInput pTxnInput) {
ei_x_buff x;
ei_x_new_with_version(&x);
ei_x_encode_tuple_header(&x, 2);
{
ei_x_encode_atom(&x, "ok");
ei_x_encode_tuple_header(&x, 2);
{
ei_x_encode_atom(&x, APP ".BH.TC");
m_Encoder.encode(&x, *pTxnInput);
}
}
int result = driver_output(m_ErlDrvPort, x.buff, x.index);
#ifdef _TRACE
cout << "[TC] ! " << *pTxnInput << ", result=" << result << '\r' << endl;
#endif
ei_x_free(&x);
return result;
}
static void drv_output(ErlDrvData handle, char *buf,ErlDrvSizeT sz){
ei_x_buff packed_data;
char* html_content = NULL;
char* url_address = NULL;
//first - url, second - html content
decode_result process_data_result = process_data(handle,(unsigned char*)buf,&sz,html_content,url_address);
if (!process_data_result.decode_success){
packed_data = make_error(process_data_result.error_msg);
}
else{
//first - links, second - wholeText
parse_result process_html_result =
process_html_source(process_data_result.html_content.second,process_data_result.html_content.first);
packed_data = pack_parse_data(process_html_result);
if (html_content != NULL && url_address != NULL){
driver_free(html_content);
driver_free(url_address);
}
}
drv_data_t* drv_t = (drv_data_t*)handle;
driver_output(drv_t->port, packed_data.buff, packed_data.buffsz);
ei_x_free(&packed_data);
}
static int
value_reply(RegPort* rp, /* Pointer to port structure. */
DWORD type, /* Type of value */
LPSTR name, /* Pointer to name. */
DWORD nameSize, /* Length of name. */
LPSTR value, /* Pointer to value. */
DWORD valueSize) /* Size of value. */
{
char sbuf[512];
char* s = sbuf;
int needed = 1+4+nameSize+1+valueSize;
int i;
if (sizeof sbuf < needed) {
s = driver_alloc(needed);
}
s[0] = 'v';
i = 1;
put_int32(type, s+i);
i += 4;
memcpy(s+i, name, nameSize);
i += nameSize;
s[i++] = '\0';
memcpy(s+i, value, valueSize);
ASSERT(i+valueSize == needed);
driver_output(rp->port, s, needed);
if (s != sbuf) {
driver_free(s);
}
return 1;
}
static void send_atom(ErlDrvPort port, const char *str) {
ei_x_buff x;
ei_x_new_with_version(&x);
ei_x_encode_atom(&x, str);
driver_output(port, x.buff, x.index);
ei_x_free(&x);
}
static void sendfile_drv_output(ErlDrvData handle, char* buf,
ErlDrvSizeT buflen)
{
int fd, socket_fd;
Desc* d = (Desc*)handle;
Buffer b;
b.buffer = buf;
socket_fd = get_int32(&(b.args->out_fd));
fd = open(b.args->filename, O_RDONLY | O_NONBLOCK);
if (fd < 0) {
ErlDrvSizeT out_buflen = set_error_buffer(&b, socket_fd, errno);
driver_output(d->port, buf, out_buflen);
} else {
Transfer* xfer;
SocketFd sfd;
sfd.socket_fd = socket_fd;
xfer = (Transfer*)hashtable_search(d->xfer_table, sfd.hashkey);
if (xfer == NULL) {
/* Transfer objects are intentionally not freed until the
driver stops, or if an insertion error occurs below. */
xfer = (Transfer*)malloc(sizeof(Transfer));
if (xfer == NULL) {
ErlDrvSizeT out_buflen = set_error_buffer(&b, socket_fd,
ENOMEM);
driver_output(d->port, buf, out_buflen);
return;
}
if (!hashtable_insert(d->xfer_table, sfd.hashkey, xfer)) {
ErlDrvSizeT out_buflen = set_error_buffer(&b, socket_fd,
ENOMEM);
driver_output(d->port, buf, out_buflen);
free(xfer);
return;
}
}
xfer->file_fd = fd;
xfer->offset = get_int64(&(b.args->offset.offset));
xfer->count = get_int64(&(b.args->count.size));
xfer->total = 0;
#if defined(ERL_DRV_USE) && defined(ERL_DRV_WRITE)
driver_select(d->port, sfd.ev_data, ERL_DRV_USE|ERL_DRV_WRITE, 1);
#else
driver_select(d->port, sfd.ev_data, DO_WRITE, 1);
#endif
}
}
static void timer(ErlDrvData port)
{
char reply[1];
/* fprintf(stderr, "[timer_drv] timer timed out\n"); */
reply[0] = TIMER;
driver_output((ErlDrvPort)port, reply, 1);
}
static void startc_drv_output(ErlDrvData handle, char *buff, int bufflen)
{
startc_data* d = (startc_data*)handle;
CString strNodeName;
strNodeName = startc(atoi(buff));
driver_output(d->port, (char*)(LPCTSTR)strNodeName, strNodeName.GetLength());
}
static void send_hash(ErlDrvPort port, unsigned long hash) {
ei_x_buff x;
ei_x_new_with_version(&x);
ei_x_encode_ulong(&x, hash);
driver_output(port, x.buff, x.index);
// printf("sent hash %d\n", hash);
ei_x_free(&x);
}
void handle_winch(int sig){
ei_x_buff eixb;
ei_x_new_with_version(&eixb);
tuple(&eixb, 2);
atom(&eixb, "sigwinch", 8);
atom(&eixb, "sigwinch", 8);
driver_output(stpt->drv_port, eixb.buff, eixb.index);
}
static int ret_int(int port, int ret)
{
char buf[5];
buf[0] = 1;
put_int32(ret, buf+1);
driver_output(port, buf, 5);
return ret;
}
doio(ErlDrvData port, ErlDrvEvent ino)
{
/* First go get the io, unless we already did that */
/* In the sighandler */
/* Then send it to erlang */
driver_output(this_port, "y", 1);
}
static int ret_int_int(int port, int i, int j)
{
char buf[9];
buf[0] = 1;
put_int32(i, buf+1);
put_int32(j, buf+5);
driver_output(port, buf, 9);
return i;
}
static void do_getch(ErlDrvData drvstate, ErlDrvEvent event) {
state *st = (state *)drvstate;
ei_x_buff eixb;
int keycode;
ei_x_new_with_version(&eixb);
keycode = getch();
integer(&eixb, keycode);
driver_output(st->drv_port, eixb.buff, eixb.index);
}
static void tiger_drv_output(ErlDrvData handle, char *buff, int bufflen)
{
tiger_data* d = (tiger_data*)handle;
uint64_t tiger_res[3];
tiger((uint64_t*) buff, bufflen, (uint64_t*) tiger_res);
driver_output(d->port, tiger_res, 24);
}
static void key_size(bloom_drv_t *driver) {
long result;
ei_x_buff x;
result = bloom_key_size(driver->bloom);
ei_x_new_with_version(&x);
ei_x_encode_long(&x, result);
driver_output(driver->port, x.buff, x.index);
ei_x_free(&x);
}
static void has(bloom_drv_t *driver, char *buf, int len) {
int result;
ei_x_buff x;
result = bloom_has(driver->bloom, buf, len);
ei_x_new_with_version(&x);
ei_x_encode_boolean(&x, result);
driver_output(driver->port, x.buff, x.index);
ei_x_free(&x);
}
static void example_drv_output(ErlDrvData handle, char *buff, int bufflen)
{
example_data* d = (example_data*)handle;
char fn = buff[0], arg = buff[1], res;
if (fn == 1) {
res = twice(arg);
} else if (fn == 2) {
res = sum(buff[1], buff[2]);
}
driver_output(d->port, &res, 1);
}
static void example_drv_output(ErlDrvData handle, char *buff,
ErlDrvSizeT bufflen)
{
example_data* d = (example_data*)handle;
char fn = buff[0], arg = buff[1], res;
if (fn == 1) {
res = foo(arg);
} else if (fn == 2) {
res = bar(arg);
}
driver_output(d->port, &res, 1);
}
static void
reply(RegPort* rp, LONG result)
{
char sbuf[256];
if (result == ERROR_SUCCESS) {
sbuf[0] = 'o';
driver_output(rp->port, sbuf, 1);
} else {
char* s;
char* t;
int err;
sbuf[0] = 'e';
err = maperror(result);
for (s = erl_errno_id(err), t = sbuf+1; *s; s++, t++) {
*t = tolower(*s);
}
driver_output(rp->port, sbuf, t-sbuf);
}
/* return 1; */
}
static void ready_async(ErlDrvData handle, ErlDrvThreadData w) {
GenQData* d = (GenQData*)handle;
QWork* work = (QWork*)w;
ei_x_buff result;
ei_x_new(&result);
genq_work_result(work, &result);
genq_free_work(work);
driver_output(d->port, result.buff, result.index);
ei_x_free(&result);
}
static void sendfile_drv_ready_output(ErlDrvData handle, ErlDrvEvent ev)
{
Desc* d = (Desc*)handle;
ssize_t result;
off_t cur_offset;
Transfer* xfer;
SocketFd* sfd = (SocketFd*)&ev;
xfer = (Transfer*)hashtable_search(d->xfer_table, sfd->hashkey);
if (xfer == NULL) {
/* fatal error, something is very wrong */
driver_failure_atom(d->port, "socket_fd_not_found");
return;
}
cur_offset = xfer->offset;
result = sendfile_call(sfd->socket_fd, xfer->file_fd,
&xfer->offset, xfer->count);
if (result < 0 && (errno == EAGAIN || errno == EWOULDBLOCK ||
errno == EINPROGRESS || errno == EALREADY)) {
if (xfer->offset != cur_offset) {
off_t written = xfer->offset - cur_offset;
xfer->count -= written;
xfer->total += written;
}
} else {
int save_errno = errno;
ErlDrvSizeT out_buflen;
char buf[36];
Buffer b;
b.buffer = buf;
memset(buf, 0, sizeof buf);
#ifdef ERL_DRV_WRITE
driver_select(d->port, ev, ERL_DRV_WRITE, 0);
#else
driver_select(d->port, ev, DO_WRITE, 0);
#endif
close(xfer->file_fd);
if (result < 0) {
out_buflen = set_error_buffer(&b, sfd->socket_fd, save_errno);
} else {
uint64_t total = xfer->total + result;
put_int64(total, &(b.result->count.count));
put_int32(sfd->socket_fd, &(b.result->out_fd));
b.result->success = 1;
b.result->errno_string[0] = '\0';
out_buflen = sizeof(*b.result);
}
xfer->file_fd = -1;
xfer->offset = xfer->count = xfer->total = 0;
driver_output(d->port, buf, out_buflen);
}
}
static void tun_input(ErlDrvData data, ErlDrvEvent nil)
{
struct tun_state *state = (struct tun_state *)data;
int len;
len = read(state->fd, state->buf, TUNNEL_BUF_SIZE);
if (len > 0) {
driver_output(state->port, state->buf, len);
}
if (state->active == ACTIVE_ONCE) {
state->active = ACTIVE_FALSE;
set_input(state, 0);
}
}
static void do_getch(ErlDrvData drvstate, ErlDrvEvent event) {
state *st = (state *)drvstate;
ei_x_buff eixb;
int keycode;
ei_x_new_with_version(&eixb);
keycode = getch();
if(keycode == KEY_RESIZE) {
encode_ok_reply(st, OK);
} else {
tuple(&eixb, 2);
atom(&eixb, "getch", 5);
integer(&eixb, keycode);
driver_output(st->drv_port, eixb.buff, eixb.index);
}
}