зеркало из https://github.com/github/putty.git
121 строка
3.9 KiB
C
121 строка
3.9 KiB
C
struct ssh1_channel;
|
|
|
|
struct outstanding_succfail;
|
|
|
|
struct ssh1_connection_state {
|
|
int crState;
|
|
|
|
Ssh *ssh;
|
|
|
|
Conf *conf;
|
|
int local_protoflags, remote_protoflags;
|
|
|
|
tree234 *channels; /* indexed by local id */
|
|
|
|
/* In SSH-1, the main session doesn't take the form of a 'channel'
|
|
* according to the wire protocol. But we want to use the same API
|
|
* for it, so we define an SshChannel here - but one that uses a
|
|
* separate vtable from the usual one, so it doesn't map to a
|
|
* struct ssh1_channel as all the others do. */
|
|
SshChannel mainchan_sc;
|
|
Channel *mainchan_chan; /* the other end of mainchan_sc */
|
|
mainchan *mainchan; /* and its subtype */
|
|
|
|
bool got_pty;
|
|
bool ldisc_opts[LD_N_OPTIONS];
|
|
bool stdout_throttling;
|
|
bool want_user_input;
|
|
bool session_terminated;
|
|
int term_width, term_height, term_width_orig, term_height_orig;
|
|
|
|
bool X11_fwd_enabled;
|
|
struct X11Display *x11disp;
|
|
struct X11FakeAuth *x11auth;
|
|
tree234 *x11authtree;
|
|
|
|
bool agent_fwd_enabled;
|
|
|
|
tree234 *rportfwds;
|
|
PortFwdManager *portfwdmgr;
|
|
bool portfwdmgr_configured;
|
|
|
|
bool finished_setup;
|
|
|
|
/*
|
|
* These store the list of requests that we're waiting for
|
|
* SSH_SMSG_{SUCCESS,FAILURE} replies to. (Those messages don't
|
|
* come with any indication of what they're in response to, so we
|
|
* have to keep track of the queue ourselves.)
|
|
*/
|
|
struct outstanding_succfail *succfail_head, *succfail_tail;
|
|
|
|
bool compressing; /* used in server mode only */
|
|
bool sent_exit_status; /* also for server mode */
|
|
|
|
ConnectionLayer cl;
|
|
PacketProtocolLayer ppl;
|
|
};
|
|
|
|
struct ssh1_channel {
|
|
struct ssh1_connection_state *connlayer;
|
|
|
|
unsigned remoteid, localid;
|
|
int type;
|
|
/* True if we opened this channel but server hasn't confirmed. */
|
|
bool halfopen;
|
|
|
|
/* Bitmap of whether we've sent/received CHANNEL_CLOSE and
|
|
* CHANNEL_CLOSE_CONFIRMATION. */
|
|
#define CLOSES_SENT_CLOSE 1
|
|
#define CLOSES_SENT_CLOSECONF 2
|
|
#define CLOSES_RCVD_CLOSE 4
|
|
#define CLOSES_RCVD_CLOSECONF 8
|
|
int closes;
|
|
|
|
/*
|
|
* This flag indicates that an EOF is pending on the outgoing side
|
|
* of the channel: that is, wherever we're getting the data for
|
|
* this channel has sent us some data followed by EOF. We can't
|
|
* actually send the EOF until we've finished sending the data, so
|
|
* we set this flag instead to remind us to do so once our buffer
|
|
* is clear.
|
|
*/
|
|
bool pending_eof;
|
|
|
|
/*
|
|
* True if this channel is causing the underlying connection to be
|
|
* throttled.
|
|
*/
|
|
bool throttling_conn;
|
|
|
|
/*
|
|
* True if we currently have backed-up data on the direction of
|
|
* this channel pointing out of the SSH connection, and therefore
|
|
* would prefer the 'Channel' implementation not to read further
|
|
* local input if possible.
|
|
*/
|
|
bool throttled_by_backlog;
|
|
|
|
Channel *chan; /* handle the client side of this channel, if not */
|
|
SshChannel sc; /* entry point for chan to talk back to */
|
|
};
|
|
|
|
SshChannel *ssh1_session_open(ConnectionLayer *cl, Channel *chan);
|
|
void ssh1_channel_init(struct ssh1_channel *c);
|
|
void ssh1_channel_free(struct ssh1_channel *c);
|
|
struct ssh_rportfwd *ssh1_rportfwd_alloc(
|
|
ConnectionLayer *cl,
|
|
const char *shost, int sport, const char *dhost, int dport,
|
|
int addressfamily, const char *log_description, PortFwdRecord *pfr,
|
|
ssh_sharing_connstate *share_ctx);
|
|
SshChannel *ssh1_serverside_x11_open(
|
|
ConnectionLayer *cl, Channel *chan, const SocketPeerInfo *pi);
|
|
SshChannel *ssh1_serverside_agent_open(ConnectionLayer *cl, Channel *chan);
|
|
|
|
void ssh1_connection_direction_specific_setup(
|
|
struct ssh1_connection_state *s);
|
|
bool ssh1_handle_direction_specific_packet(
|
|
struct ssh1_connection_state *s, PktIn *pktin);
|
|
|
|
bool ssh1_check_termination(struct ssh1_connection_state *s);
|