/* returns error
data coming in from the channel handler, send it to the client */
static int APP_CC
xrdp_mm_trans_process_channel_data(struct xrdp_mm* self, struct trans* trans)
{
struct stream* s = (struct stream *)NULL;
int size = 0;
int total_size = 0;
int chan_id = 0;
int chan_flags = 0;
int rv = 0;
s = trans_get_in_s(trans);
if (s == 0)
{
return 1;
}
in_uint16_le(s, chan_id);
in_uint16_le(s, chan_flags);
in_uint16_le(s, size);
in_uint32_le(s, total_size);
rv = xrdp_mm_trans_send_channel_data_response(self, trans);
if (rv == 0)
{
rv = libxrdp_send_to_channel(self->wm->session, chan_id, s->p, size, total_size,
chan_flags);
}
return rv;
}
/* this is callback from trans obj
returns error */
static int APP_CC
xrdp_mm_chan_data_in(struct trans* trans)
{
struct xrdp_mm* self = (struct xrdp_mm *)NULL;
struct stream* s = (struct stream *)NULL;
int id = 0;
int size = 0;
int error = 0;
if (trans == 0)
{
return 1;
}
self = (struct xrdp_mm*)(trans->callback_data);
s = trans_get_in_s(trans);
if (s == 0)
{
return 1;
}
in_uint32_le(s, id);
in_uint32_le(s, size);
error = trans_force_read(trans, size - 8);
if (error == 0)
{
/* here, the entire message block is read in, process it */
error = xrdp_mm_chan_process_msg(self, trans, s);
}
return error;
}
/* returns error */
int DEFAULT_CC
my_trans_data_in(struct trans *trans)
{
struct stream *s = (struct stream *)NULL;
int id = 0;
int size = 0;
int error = 0;
if (trans == 0)
{
return 0;
}
if (trans != g_con_trans)
{
return 1;
}
LOGM((LOG_LEVEL_DEBUG, "my_trans_data_in:"));
s = trans_get_in_s(trans);
in_uint32_le(s, id);
in_uint32_le(s, size);
error = trans_force_read(trans, size - 8);
if (error == 0)
{
/* here, the entire message block is read in, process it */
error = process_message();
}
return error;
}
/* returns error */
int DEFAULT_CC
my_trans_data_in(struct trans* trans)
{
struct stream* s;
int id;
int size;
int error;
if (trans == 0)
{
return 0;
}
if (trans != g_con_trans)
{
return 1;
}
log_message(&log_conf, LOG_LEVEL_DEBUG, "chansrv[my_trans_data_in]: "
"my_trans_data_in:");
s = trans_get_in_s(trans);
in_uint32_le(s, id);
in_uint32_le(s, size);
error = trans_force_read(trans, size - 8);
if (error == 0)
{
/* here, the entire message block is read in, process it */
error = process_message();
}
return error;
}
/* returns error */
static int APP_CC
process_message(void)
{
struct stream *s = (struct stream *)NULL;
int size = 0;
int id = 0;
int rv = 0;
char *next_msg = (char *)NULL;
if (g_con_trans == 0)
{
return 1;
}
s = trans_get_in_s(g_con_trans);
if (s == 0)
{
return 1;
}
rv = 0;
while (s_check_rem(s, 8))
{
next_msg = s->p;
in_uint32_le(s, id);
in_uint32_le(s, size);
next_msg += size;
switch (id)
{
case 1: /* init */
rv = process_message_init(s);
break;
case 3: /* channel setup */
rv = process_message_channel_setup(s);
break;
case 5: /* channel data */
rv = process_message_channel_data(s);
break;
case 7: /* channel data response */
rv = process_message_channel_data_response(s);
break;
default:
LOGM((LOG_LEVEL_ERROR, "process_message: error in process_message ",
"unknown msg %d", id));
break;
}
if (rv != 0)
{
break;
}
s->p = next_msg;
}
return rv;
}
/* returns error */
static int APP_CC
process_message(void)
{
struct stream* s;
int size;
int id;
int rv;
char* next_msg;
if (g_con_trans == 0)
{
return 1;
}
s = trans_get_in_s(g_con_trans);
if (s == 0)
{
return 1;
}
rv = 0;
while (s_check_rem(s, 8))
{
next_msg = s->p;
in_uint32_le(s, id);
in_uint32_le(s, size);
next_msg += size;
switch (id)
{
case 1: /* init */
rv = process_message_init(s);
break;
case 3: /* channel setup */
rv = process_message_channel_setup(s);
break;
case 5: /* channel data */
rv = process_message_channel_data(s);
break;
case 7: /* channel data response */
rv = process_message_channel_data_response(s);
break;
default:
log_message(&log_conf, LOG_LEVEL_DEBUG, "chansrv[process_message]: "
"unknown msg %d", id);
break;
}
if (rv != 0)
{
break;
}
s->p = next_msg;
}
return rv;
}
static int APP_CC
xrdp_mm_sesman_data_in(struct trans* trans)
{
struct xrdp_mm* self = (struct xrdp_mm *)NULL;
struct stream* s = (struct stream *)NULL;
int version = 0;
int size = 0;
int error = 0;
int code = 0;
if (trans == 0)
{
return 1;
}
self = (struct xrdp_mm*)(trans->callback_data);
s = trans_get_in_s(trans);
if (s == 0)
{
return 1;
}
in_uint32_be(s, version);
in_uint32_be(s, size);
error = trans_force_read(trans, size - 8);
if (error == 0)
{
in_uint16_be(s, code);
switch (code)
{
case 3:
error = xrdp_mm_process_login_response(self, s);
break;
default:
g_writeln("xrdp_mm_sesman_data_in: unknown code %d", code);
break;
}
}
return error;
}
/* data coming in from audio source, eg pulse, alsa */
static int DEFAULT_CC
sound_trans_audio_data_in(struct trans *trans)
{
struct stream *s;
int id;
int size;
int error;
if (trans == 0)
{
return 0;
}
if (trans != g_audio_c_trans)
{
return 1;
}
s = trans_get_in_s(trans);
in_uint32_le(s, id);
in_uint32_le(s, size);
if ((id != 0) || (size > 128 * 1024 + 8) || (size < 8))
{
LOG(0, ("sound_trans_audio_data_in: bad message id %d size %d", id, size));
return 1;
}
LOG(10, ("sound_trans_audio_data_in: good message id %d size %d", id, size));
error = trans_force_read(trans, size - 8);
if (error == 0)
{
/* here, the entire message block is read in, process it */
error = process_pcm_message(id, size - 8, s);
}
return error;
}
/*
* called when WTSVirtualChannelOpenEx is invoked in xrdpapi.c
*
******************************************************************************/
int DEFAULT_CC
my_api_trans_conn_in(struct trans *trans, struct trans *new_trans)
{
struct xrdp_api_data *ad;
struct stream *s;
int error;
int index;
char chan_pri;
if ((trans == 0) || (trans != g_api_lis_trans) || (new_trans == 0))
{
return 1;
}
LOGM((LOG_LEVEL_DEBUG, "my_api_trans_conn_in:"));
LOG(10, ("my_api_trans_conn_in: got incoming"));
s = trans_get_in_s(new_trans);
s->end = s->data;
error = trans_force_read(new_trans, 64);
if (error != 0)
{
LOG(0, ("my_api_trans_conn_in: trans_force_read failed"));
trans_delete(new_trans);
}
s->end = s->data;
ad = (struct xrdp_api_data *) g_malloc(sizeof(struct xrdp_api_data), 1);
g_memcpy(ad->header, s->data, 64);
ad->flags = GGET_UINT32(ad->header, 16);
ad->chan_id = -1;
ad->dvc_chan_id = -1;
if (ad->flags > 0)
{
/* opening a dynamic virtual channel */
if ((index = find_empty_slot_in_dvc_channels()) < 0)
{
/* exceeded MAX_DVC_CHANNELS */
LOG(0, ("my_api_trans_conn_in: MAX_DVC_CHANNELS reached; giving up!"))
g_free(ad);
trans_delete(new_trans);
return 1;
}
g_dvc_channels[index] = ad;
chan_pri = 4 - ad->flags;
ad->dvc_chan_id = g_dvc_chan_id++;
ad->is_connected = 0;
ad->transp = new_trans;
drdynvc_send_open_channel_request(chan_pri, ad->dvc_chan_id, ad->header);
}
else
{
/* opening a static virtual channel */
for (index = 0; index < g_num_chan_items; index++)
{
LOG(10, ("my_api_trans_conn_in: %s %s", ad->header,
g_chan_items[index].name));
if (g_strcasecmp(ad->header, g_chan_items[index].name) == 0)
{
LOG(10, ("my_api_trans_conn_in: found it at %d", index));
ad->chan_id = g_chan_items[index].id;
break;
}
}
if (index == g_num_chan_items)
{
g_writeln("did not find SVC named %s", ad->header);
}
}
new_trans->callback_data = ad;
trans_delete(g_api_con_trans);
g_api_con_trans = new_trans;
g_api_con_trans->trans_data_in = my_api_trans_data_in;
g_api_con_trans->header_size = 0;
return 0;
}
/*
* called when WTSVirtualChannelWrite() is invoked in xrdpapi.c
*
******************************************************************************/
int DEFAULT_CC
my_api_trans_data_in(struct trans *trans)
{
struct stream *s;
int bytes_read;
int i32;
struct xrdp_api_data *ad;
//g_writeln("my_api_trans_data_in:");
LOG(10, ("my_api_trans_data_in:"));
if (trans == 0)
{
return 0;
}
if (trans != g_api_con_trans)
{
return 1;
}
LOGM((LOG_LEVEL_DEBUG, "my_api_trans_data_in:"));
s = trans_get_in_s(trans);
bytes_read = g_tcp_recv(trans->sck, s->data, 16, 0);
if (bytes_read == 16)
{
if (g_memcmp(s->data, g_xrdpapi_magic, 12) == 0)
{
in_uint8s(s, 12);
in_uint32_le(s, bytes_read);
init_stream(s, bytes_read);
trans_force_read(trans, bytes_read);
}
else if (g_tcp_select(trans->sck, 0) & 1)
{
i32 = bytes_read;
bytes_read = g_tcp_recv(trans->sck, s->data + bytes_read,
8192 * 4 - bytes_read, 0);
if (bytes_read > 0)
{
bytes_read += i32;
}
}
}
//g_writeln("bytes_read %d", bytes_read);
if (bytes_read > 0)
{
LOG(10, ("my_api_trans_data_in: got data %d", bytes_read));
ad = (struct xrdp_api_data *) trans->callback_data;
if (ad->dvc_chan_id < 0)
{
/* writing data to a static virtual channel */
if (send_channel_data(ad->chan_id, s->data, bytes_read) != 0)
{
LOG(0, ("my_api_trans_data_in: send_channel_data failed"));
}
}
else
{
/* writing data to a dynamic virtual channel */
drdynvc_write_data(ad->dvc_chan_id, s->data, bytes_read);
}
}
else
{
ad = (struct xrdp_api_data *) (trans->callback_data);
if ((ad != NULL) && (ad->dvc_chan_id > 0))
{
/* WTSVirtualChannelClose() was invoked, or connection dropped */
LOG(10, ("my_api_trans_data_in: g_tcp_recv failed or disconnected for DVC"));
ad->transp = NULL;
ad->is_connected = 0;
remove_struct_with_chan_id(ad->dvc_chan_id);
}
else
{
LOG(10, ("my_api_trans_data_in: g_tcp_recv failed or disconnected for SVC"));
}
return 1;
}
return 0;
}