/* * the same for SSH2 */ static void chan_rcvd_close2(Channel *c) { debug("channel %d: rcvd close", c->self); if (c->flags & CHAN_CLOSE_RCVD) error("channel %d: protocol error: close rcvd twice", c->self); c->flags |= CHAN_CLOSE_RCVD; if (c->type == SSH_CHANNEL_LARVAL) { /* tear down larval channels immediately */ chan_set_ostate(c, CHAN_OUTPUT_CLOSED); chan_set_istate(c, CHAN_INPUT_CLOSED); return; } switch (c->ostate) { case CHAN_OUTPUT_OPEN: /* * wait until a data from the channel is consumed if a CLOSE * is received */ chan_set_ostate(c, CHAN_OUTPUT_WAIT_DRAIN); break; } switch (c->istate) { case CHAN_INPUT_OPEN: chan_shutdown_read(c); chan_set_istate(c, CHAN_INPUT_CLOSED); break; case CHAN_INPUT_WAIT_DRAIN: chan_send_eof2(c); chan_set_istate(c, CHAN_INPUT_CLOSED); break; } }
static void chan_rcvd_eof2(Channel *c) { debug2("channel %d: rcvd eof", c->self); c->flags |= CHAN_EOF_RCVD; if (c->ostate == CHAN_OUTPUT_OPEN) chan_set_ostate(c, CHAN_OUTPUT_WAIT_DRAIN); }
static void chan_rcvd_ieof1(Channel *c) { debug2("channel %d: rcvd ieof", c->self); switch (c->ostate) { case CHAN_OUTPUT_OPEN: chan_set_ostate(c, CHAN_OUTPUT_WAIT_DRAIN); break; case CHAN_OUTPUT_WAIT_IEOF: chan_set_ostate(c, CHAN_OUTPUT_CLOSED); break; default: error("channel %d: protocol error: rcvd_ieof for ostate %d", c->self, c->ostate); break; } }
static void chan_write_failed1(Channel *c) { debug2("channel %d: write failed", c->self); switch (c->ostate) { case CHAN_OUTPUT_OPEN: chan_shutdown_write(c); chan_send_oclose1(c); chan_set_ostate(c, CHAN_OUTPUT_WAIT_IEOF); break; case CHAN_OUTPUT_WAIT_DRAIN: chan_shutdown_write(c); chan_send_oclose1(c); chan_set_ostate(c, CHAN_OUTPUT_CLOSED); break; default: error("channel %d: chan_write_failed for ostate %d", c->self, c->ostate); break; } }
void chan_rcvd_ieof(struct ssh *ssh, Channel *c) { debug2("channel %d: rcvd eof", c->self); c->flags |= CHAN_EOF_RCVD; if (c->ostate == CHAN_OUTPUT_OPEN) chan_set_ostate(c, CHAN_OUTPUT_WAIT_DRAIN); if (c->ostate == CHAN_OUTPUT_WAIT_DRAIN && sshbuf_len(c->output) == 0 && !CHANNEL_EFD_OUTPUT_ACTIVE(c)) chan_obuf_empty(ssh, c); }
static void chan_write_failed2(Channel *c) { debug2("channel %d: write failed", c->self); switch (c->ostate) { case CHAN_OUTPUT_OPEN: case CHAN_OUTPUT_WAIT_DRAIN: chan_shutdown_write(c); if (strcmp(c->ctype, "session") == 0) chan_send_eow2(c); chan_set_ostate(c, CHAN_OUTPUT_CLOSED); break; default: error("channel %d: chan_write_failed for ostate %d", c->self, c->ostate); break; } }
void chan_obuf_empty(struct ssh *ssh, Channel *c) { debug2("channel %d: obuf empty", c->self); if (sshbuf_len(c->output)) { error("channel %d: chan_obuf_empty for non empty buffer", c->self); return; } switch (c->ostate) { case CHAN_OUTPUT_WAIT_DRAIN: chan_shutdown_write(ssh, c); chan_set_ostate(c, CHAN_OUTPUT_CLOSED); break; default: error("channel %d: internal error: obuf_empty for ostate %d", c->self, c->ostate); break; } }
void chan_obuf_empty(Channel *c) { debug2("channel %d: obuf empty", c->self); if (buffer_len(&c->output)) { error("channel %d: chan_obuf_empty for non empty buffer", c->self); return; } switch (c->ostate) { case CHAN_OUTPUT_WAIT_DRAIN: chan_shutdown_write(c); if (!compat20) chan_send_oclose1(c); chan_set_ostate(c, CHAN_OUTPUT_CLOSED); break; default: error("channel %d: internal error: obuf_empty for ostate %d", c->self, c->ostate); break; } }