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#include <errno.h>
#include "intf.h"
#include "debug.h"
extern struct tsnif_np_prot udp_prot;
extern struct tsnif_np_prot tcp_prot;
struct tsnif_np_prot *prot[TSNIF_NP_PROT_MAX] = {
&udp_prot,
&tcp_prot,
};
#define UDP (prot[TSNIF_NP_PROT_UDP])
#define TCP (prot[TSNIF_NP_PROT_TCP])
static int udp_init(struct tsnif_handle *h, struct tsnif_np_args *np, int flags)
{
int ret;
if (flags & TSNIF_NP_UDP_CLIENT)
ret = UDP->init_client(h, np);
else
ret = UDP->init_server(h, np);
return ret;
}
int tsnif_np_init(struct tsnif_handle *h, struct tsnif_np_args *np)
{
int ret;
int flags = np->flags;
struct tsnif_np_handle *nph = &h->np;
TSNIF_DEBUG(NP, "flags = %x, client %d, udp %d\n",
np ? np->flags : 0,
np ? np->flags & TSNIF_NP_CLIENT : 0,
np ? np->flags & TSNIF_NP_UDP : 0 );
/* no proxy requested */
if (!np && (!np->flags))
return 0;
memset(nph, 0x0, sizeof(*nph));
nph->flags = flags;
nph->fd_udp = -1;
nph->fd_tcp = -1;
if (flags & TSNIF_NP_CLIENT) {
/* only one client protocol allowed */
if ((flags & TSNIF_NP_UDP_CLIENT) &&
(flags & TSNIF_NP_TCP_CLIENT))
return -EINVAL;
h->np_only = 1;
}
if (TSNIF_NP_UDP & flags)
ret = udp_init(h, np, flags);
TSNIF_DEBUG(NP, "ret = %d\n", ret);
return ret;
}
int tsnif_np_fd(struct tsnif_handle *h, fd_set *set)
{
struct tsnif_np_handle *nph = &h->np;
int fd_udp = nph->fd_udp;
int fd_tcp = nph->fd_tcp;
if ((TSNIF_NP_UDP & nph->flags) &&
(-1 != fd_udp))
FD_SET(fd_udp, set);
if ((TSNIF_NP_TCP & nph->flags) &&
(-1 != fd_tcp))
FD_SET(fd_tcp, set);
return (fd_udp > fd_tcp ? fd_udp : fd_tcp);
}
int tsnif_np_process(struct tsnif_handle *h, fd_set *set)
{
struct tsnif_np_handle *nph = &h->np;
int ret = 0;
if ((TSNIF_NP_UDP & nph->flags) &&
FD_ISSET(nph->fd_udp, set))
ret = UDP->process(h);
return ret;
}
int tsnif_np_close(struct tsnif_handle *h)
{
struct tsnif_np_handle *nph = &h->np;
if (TSNIF_NP_UDP & nph->flags)
UDP->close(h);
return 0;
}
int tsnif_np_send_client(struct tsnif_handle *h, struct trans_msg *msg)
{
struct tsnif_np_handle *nph = &h->np;
int ret = 0;
/* pro bile, cernochu!!! ;) */
if (!(TSNIF_NP_CLIENT & nph->flags))
return 0;
if (TSNIF_NP_UDP & nph->flags)
ret = UDP->send(h, msg);
return ret;
}
int tsnif_np_send_server(struct tsnif_handle *h, struct trans_msg *msg)
{
struct tsnif_np_handle *nph = &h->np;
int ret = 0;
if (!(TSNIF_NP_SERVER & nph->flags))
return 0;
if (TSNIF_NP_UDP & nph->flags)
ret = UDP->send(h, msg);
return ret;
}
static int dispatch_server_attach(struct tsnif_handle *h, struct trans_msg *msg)
{
struct tsnif_np_handle *nph = &h->np;
struct tsnif_term *term;
TSNIF_DEBUG(NP, "type = %d, idx = %d\n", msg->type, msg->idx);
term = term_find(h, msg->type, msg->idx);
if (!term) {
TSNIF_DEBUG(NP, "term not found\n");
msg->err = 1;
msg->error = -EINVAL;
return tsnif_np_send_server(h, msg);
}
if (nph->flags & TSNIF_NP_UDP)
nph->udp_client.term = term;
TSNIF_DEBUG(NP, "term attached\n");
msg->ack = 1;
return tsnif_np_send_server(h, msg);
}
static int dispatch_server_detach(struct tsnif_handle *h, struct trans_msg *msg)
{
struct tsnif_np_handle *nph = &h->np;
struct tsnif_term *term;
TSNIF_DEBUG(NP, "type = %d, idx = %d\n", msg->type, msg->idx);
term = term_find(h, msg->type, msg->idx);
if ((!term) ||
(term != nph->udp_client.term)) {
TSNIF_DEBUG(NP, "term not found\n");
msg->err = 1;
msg->error = -EINVAL;
return tsnif_np_send_server(h, msg);
}
if (nph->flags & TSNIF_NP_UDP)
memset(&nph->udp_client, 0x0, sizeof(nph->udp_client));
TSNIF_DEBUG(NP, "term detached\n");
msg->ack = 1;
return tsnif_np_send_server(h, msg);
}
static int dispatch_server_list(struct tsnif_handle *h, struct trans_msg *msg)
{
return 0;
}
static int dispatch_server(struct tsnif_handle *h, struct trans_msg *msg)
{
int ret = -EINVAL;
struct tsnif_np_handle *nph = &h->np;
/* is there any client */
if ((nph->flags & TSNIF_NP_UDP) &&
(!nph->udp_client.connected))
return 0;
switch(msg->cmd) {
case TSNIF_CMD_ATTACH:
ret = dispatch_server_attach(h, msg);
break;
case TSNIF_CMD_DETACH:
ret = dispatch_server_detach(h, msg);
break;
case TSNIF_CMD_TTY_LIST:
ret = dispatch_server_list(h, msg);
break;
}
return ret;
}
int tsnif_np_dispatch(struct tsnif_handle *h, struct trans_msg *msg)
{
struct tsnif_np_handle *nph = &h->np;
if (nph->flags & TSNIF_NP_CLIENT)
return tsnif_dispatch(h, msg);
if (nph->flags & TSNIF_NP_SERVER)
return dispatch_server(h, msg);
return 0;
}
/* XXX - finish parsing
* host is expected to be int format:
*
* hostname (default port is used)
* ip (default port is used)
* hostname:port
* ip:port
*
*/
void tsnif_np_args(struct tsnif_np_args *args, int flag, char *host)
{
args->flags = flag;
args->host = host;
args->port = TSNIF_NP_PORT;
}
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