#include "libsmb/nmblib.h"
#include "read_smb.h"
-/**
- * Fetch an error out of a NBT packet
- * @param[in] buf The SMB packet
- * @retval The error, converted to NTSTATUS
- */
-
-NTSTATUS cli_pull_error(char *buf)
+static NTSTATUS cli_pull_raw_error(const uint8_t *buf)
{
uint32_t flags2 = SVAL(buf, smb_flg2);
+ NTSTATUS status = NT_STATUS(IVAL(buf, smb_rcls));
- if (flags2 & FLAGS2_32_BIT_ERROR_CODES) {
- return NT_STATUS(IVAL(buf, smb_rcls));
+ if (NT_STATUS_IS_OK(status)) {
+ return NT_STATUS_OK;
}
- return dos_to_ntstatus(CVAL(buf, smb_rcls), SVAL(buf,smb_err));
-}
-
-/**
- * Compatibility helper for the sync APIs: Fake NTSTATUS in cli->inbuf
- * @param[in] cli The client connection that just received an error
- * @param[in] status The error to set on "cli"
- */
-
-void cli_set_error(struct cli_state *cli, NTSTATUS status)
-{
- uint32_t flags2 = SVAL(cli->inbuf, smb_flg2);
-
- if (NT_STATUS_IS_DOS(status)) {
- SSVAL(cli->inbuf, smb_flg2,
- flags2 & ~FLAGS2_32_BIT_ERROR_CODES);
- SCVAL(cli->inbuf, smb_rcls, NT_STATUS_DOS_CLASS(status));
- SSVAL(cli->inbuf, smb_err, NT_STATUS_DOS_CODE(status));
- return;
+ if (flags2 & FLAGS2_32_BIT_ERROR_CODES) {
+ return status;
}
- SSVAL(cli->inbuf, smb_flg2, flags2 | FLAGS2_32_BIT_ERROR_CODES);
- SIVAL(cli->inbuf, smb_rcls, NT_STATUS_V(status));
- return;
+ return NT_STATUS_DOS(CVAL(buf, smb_rcls), SVAL(buf,smb_err));
}
/**
int chain_num;
int chain_length;
struct tevent_req **chained_requests;
+
+ bool one_way;
};
static uint16_t cli_alloc_mid(struct cli_state *cli)
{
- int num_pending = talloc_array_length(cli->pending);
+ int num_pending = talloc_array_length(cli->conn.pending);
uint16_t result;
while (true) {
int i;
- result = cli->mid++;
+ result = cli->conn.smb1.mid++;
if ((result == 0) || (result == 0xffff)) {
continue;
}
for (i=0; i<num_pending; i++) {
- if (result == cli_smb_req_mid(cli->pending[i])) {
+ if (result == cli_smb_req_mid(cli->conn.pending[i])) {
break;
}
}
struct cli_smb_state *state = tevent_req_data(
req, struct cli_smb_state);
struct cli_state *cli = state->cli;
- int num_pending = talloc_array_length(cli->pending);
+ int num_pending = talloc_array_length(cli->conn.pending);
int i;
if (state->mid != 0) {
return;
}
+ talloc_set_destructor(req, NULL);
+
if (num_pending == 1) {
/*
* The pending read_smb tevent_req is a child of
* cli->pending. So if nothing is pending anymore, we need to
* delete the socket read fde.
*/
- TALLOC_FREE(cli->pending);
+ TALLOC_FREE(cli->conn.pending);
+ cli->conn.read_smb_req = NULL;
return;
}
for (i=0; i<num_pending; i++) {
- if (req == cli->pending[i]) {
+ if (req == cli->conn.pending[i]) {
break;
}
}
/*
* Something's seriously broken. Just returning here is the
* right thing nevertheless, the point of this routine is to
- * remove ourselves from cli->pending.
+ * remove ourselves from cli->conn.pending.
*/
return;
}
/*
- * Remove ourselves from the cli->pending array
+ * Remove ourselves from the cli->conn.pending array
*/
- cli->pending[i] = cli->pending[num_pending-1];
+ for (; i < (num_pending - 1); i++) {
+ cli->conn.pending[i] = cli->conn.pending[i+1];
+ }
/*
* No NULL check here, we're shrinking by sizeof(void *), and
* talloc_realloc just adjusts the size for this.
*/
- cli->pending = talloc_realloc(NULL, cli->pending, struct tevent_req *,
- num_pending - 1);
+ cli->conn.pending = talloc_realloc(NULL, cli->conn.pending,
+ struct tevent_req *,
+ num_pending - 1);
return;
}
return 0;
}
-static void cli_smb_received(struct tevent_req *subreq);
+static bool cli_state_receive_next(struct cli_state *cli);
+static void cli_state_notify_pending(struct cli_state *cli, NTSTATUS status);
bool cli_smb_req_set_pending(struct tevent_req *req)
{
struct cli_state *cli;
struct tevent_req **pending;
int num_pending;
- struct tevent_req *subreq;
cli = state->cli;
- num_pending = talloc_array_length(cli->pending);
+ num_pending = talloc_array_length(cli->conn.pending);
- pending = talloc_realloc(cli, cli->pending, struct tevent_req *,
+ pending = talloc_realloc(cli, cli->conn.pending, struct tevent_req *,
num_pending+1);
if (pending == NULL) {
return false;
}
pending[num_pending] = req;
- cli->pending = pending;
+ cli->conn.pending = pending;
talloc_set_destructor(req, cli_smb_req_destructor);
- if (num_pending > 0) {
+ if (!cli_state_receive_next(cli)) {
+ /*
+ * the caller should notify the current request
+ *
+ * And all other pending requests get notified
+ * by cli_state_notify_pending().
+ */
+ cli_smb_req_unset_pending(req);
+ cli_state_notify_pending(cli, NT_STATUS_NO_MEMORY);
+ return false;
+ }
+
+ return true;
+}
+
+static void cli_smb_received(struct tevent_req *subreq);
+static NTSTATUS cli_state_dispatch_smb1(struct cli_state *cli,
+ TALLOC_CTX *frame,
+ uint8_t *inbuf);
+
+static bool cli_state_receive_next(struct cli_state *cli)
+{
+ size_t num_pending = talloc_array_length(cli->conn.pending);
+ struct tevent_req *req;
+ struct cli_smb_state *state;
+
+ if (cli->conn.read_smb_req != NULL) {
return true;
}
+ if (num_pending == 0) {
+ return true;
+ }
+
+ req = cli->conn.pending[0];
+ state = tevent_req_data(req, struct cli_smb_state);
+
+ cli->conn.dispatch_incoming = cli_state_dispatch_smb1;
+
/*
* We're the first ones, add the read_smb request that waits for the
* answer from the server
*/
- subreq = read_smb_send(cli->pending, state->ev, cli->fd);
- if (subreq == NULL) {
- cli_smb_req_unset_pending(req);
+ cli->conn.read_smb_req = read_smb_send(cli->conn.pending, state->ev,
+ cli->conn.fd);
+ if (cli->conn.read_smb_req == NULL) {
return false;
}
- tevent_req_set_callback(subreq, cli_smb_received, cli);
+ tevent_req_set_callback(cli->conn.read_smb_req, cli_smb_received, cli);
return true;
}
+static void cli_state_notify_pending(struct cli_state *cli, NTSTATUS status)
+{
+ cli_state_disconnect(cli);
+
+ /*
+ * Cancel all pending requests. We do not do a for-loop walking
+ * cli->conn.pending because that array changes in
+ * cli_smb_req_destructor().
+ */
+ while (talloc_array_length(cli->conn.pending) > 0) {
+ struct tevent_req *req;
+ struct cli_smb_state *state;
+
+ req = cli->conn.pending[0];
+ state = tevent_req_data(req, struct cli_smb_state);
+
+ /*
+ * We're dead. No point waiting for trans2
+ * replies.
+ */
+ state->mid = 0;
+
+ cli_smb_req_unset_pending(req);
+
+ /*
+ * we need to defer the callback, because we may notify more
+ * then one caller.
+ */
+ tevent_req_defer_callback(req, state->ev);
+ tevent_req_nterror(req, status);
+ }
+}
+
/*
* Fetch a smb request's mid. Only valid after the request has been sent by
* cli_smb_req_send().
{
struct cli_smb_state *state = tevent_req_data(
req, struct cli_smb_state);
+
+ if (state->mid != 0) {
+ return state->mid;
+ }
+
return SVAL(state->header, smb_mid);
}
cli_setup_packet_buf(cli, (char *)state->header);
SCVAL(state->header, smb_com, smb_command);
- SSVAL(state->header, smb_tid, cli->cnum);
+ SSVAL(state->header, smb_tid, cli->smb1.tid);
SCVAL(state->header, smb_wct, wct);
state->vwv = vwv;
if (cli->timeout) {
endtime = timeval_current_ofs_msec(cli->timeout);
if (!tevent_req_set_endtime(result, ev, endtime)) {
- tevent_req_oom(result);
+ return result;
+ }
+ }
+
+ switch (smb_command) {
+ case SMBtranss:
+ case SMBtranss2:
+ case SMBnttranss:
+ case SMBntcancel:
+ state->one_way = true;
+ break;
+ case SMBlockingX:
+ if ((wct == 8) &&
+ (CVAL(vwv+3, 0) == LOCKING_ANDX_OPLOCK_RELEASE)) {
+ state->one_way = true;
}
+ break;
}
+
return result;
}
struct tevent_req *subreq;
NTSTATUS status;
- if (state->cli->fd == -1) {
- return NT_STATUS_CONNECTION_INVALID;
+ if (!cli_state_is_connected(state->cli)) {
+ return NT_STATUS_CONNECTION_DISCONNECTED;
}
if (iov[0].iov_len < smb_wct) {
return status;
}
- if (cli_encryption_on(state->cli)) {
+ if (cli_state_encryption_on(state->cli)) {
char *buf, *enc_buf;
buf = (char *)iov_concat(talloc_tos(), iov, iov_count);
iov[0].iov_len = talloc_get_size(buf);
iov_count = 1;
}
- subreq = writev_send(state, state->ev, state->cli->outgoing,
- state->cli->fd, false, iov, iov_count);
+ subreq = writev_send(state, state->ev, state->cli->conn.outgoing,
+ state->cli->conn.fd, false, iov, iov_count);
if (subreq == NULL) {
return NT_STATUS_NO_MEMORY;
}
struct cli_smb_state *state = tevent_req_data(
req, struct cli_smb_state);
+ if (!tevent_req_is_in_progress(req)) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
return cli_smb_req_iov_send(req, state, state->iov, state->iov_count);
}
if (req == NULL) {
return NULL;
}
-
+ if (!tevent_req_is_in_progress(req)) {
+ return tevent_req_post(req, ev);
+ }
status = cli_smb_req_send(req);
if (!NT_STATUS_IS_OK(status)) {
tevent_req_nterror(req, status);
nwritten = writev_recv(subreq, &err);
TALLOC_FREE(subreq);
if (nwritten == -1) {
- if (state->cli->fd != -1) {
- close(state->cli->fd);
- state->cli->fd = -1;
- }
- tevent_req_nterror(req, map_nt_error_from_unix(err));
+ NTSTATUS status = map_nt_error_from_unix(err);
+ cli_state_notify_pending(state->cli, status);
return;
}
- switch (CVAL(state->header, smb_com)) {
- case SMBtranss:
- case SMBtranss2:
- case SMBnttranss:
- case SMBntcancel:
+ if (state->one_way) {
state->inbuf = NULL;
tevent_req_done(req);
return;
- case SMBlockingX:
- if ((CVAL(state->header, smb_wct) == 8) &&
- (CVAL(state->vwv+3, 0) == LOCKING_ANDX_OPLOCK_RELEASE)) {
- state->inbuf = NULL;
- tevent_req_done(req);
- return;
- }
}
if (!cli_smb_req_set_pending(req)) {
{
struct cli_state *cli = tevent_req_callback_data(
subreq, struct cli_state);
- struct tevent_req *req;
- struct cli_smb_state *state;
+ TALLOC_CTX *frame = talloc_stackframe();
NTSTATUS status;
uint8_t *inbuf;
ssize_t received;
- int num_pending;
- int i, err;
- uint16_t mid;
- bool oplock_break;
+ int err;
- received = read_smb_recv(subreq, talloc_tos(), &inbuf, &err);
+ if (subreq != cli->conn.read_smb_req) {
+ DEBUG(1, ("Internal error: cli_smb_received called with "
+ "unexpected subreq\n"));
+ status = NT_STATUS_INTERNAL_ERROR;
+ cli_state_notify_pending(cli, status);
+ TALLOC_FREE(frame);
+ return;
+ }
+
+ received = read_smb_recv(subreq, frame, &inbuf, &err);
TALLOC_FREE(subreq);
+ cli->conn.read_smb_req = NULL;
if (received == -1) {
- if (cli->fd != -1) {
- close(cli->fd);
- cli->fd = -1;
- }
status = map_nt_error_from_unix(err);
- goto fail;
+ cli_state_notify_pending(cli, status);
+ TALLOC_FREE(frame);
+ return;
+ }
+
+ status = cli->conn.dispatch_incoming(cli, frame, inbuf);
+ TALLOC_FREE(frame);
+ if (NT_STATUS_IS_OK(status)) {
+ /*
+ * We should not do any more processing
+ * as the dispatch function called
+ * tevent_req_done().
+ */
+ return;
+ } else if (!NT_STATUS_EQUAL(status, NT_STATUS_RETRY)) {
+ /*
+ * We got an error, so notify all pending requests
+ */
+ cli_state_notify_pending(cli, status);
+ return;
}
+ /*
+ * We got NT_STATUS_RETRY, so we may ask for a
+ * next incoming pdu.
+ */
+ if (!cli_state_receive_next(cli)) {
+ cli_state_notify_pending(cli, NT_STATUS_NO_MEMORY);
+ }
+}
+
+static NTSTATUS cli_state_dispatch_smb1(struct cli_state *cli,
+ TALLOC_CTX *frame,
+ uint8_t *inbuf)
+{
+ struct tevent_req *req;
+ struct cli_smb_state *state;
+ NTSTATUS status;
+ int num_pending;
+ int i;
+ uint16_t mid;
+ bool oplock_break;
+
if ((IVAL(inbuf, 4) != 0x424d53ff) /* 0xFF"SMB" */
&& (SVAL(inbuf, 4) != 0x45ff)) /* 0xFF"E" */ {
DEBUG(10, ("Got non-SMB PDU\n"));
- status = NT_STATUS_INVALID_NETWORK_RESPONSE;
- goto fail;
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
}
- if (cli_encryption_on(cli) && (CVAL(inbuf, 0) == 0)) {
+ if (cli_state_encryption_on(cli) && (CVAL(inbuf, 0) == 0)) {
uint16_t enc_ctx_num;
status = get_enc_ctx_num(inbuf, &enc_ctx_num);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("get_enc_ctx_num returned %s\n",
nt_errstr(status)));
- goto fail;
+ return status;
}
if (enc_ctx_num != cli->trans_enc_state->enc_ctx_num) {
DEBUG(10, ("wrong enc_ctx %d, expected %d\n",
enc_ctx_num,
cli->trans_enc_state->enc_ctx_num));
- status = NT_STATUS_INVALID_HANDLE;
- goto fail;
+ return NT_STATUS_INVALID_HANDLE;
}
status = common_decrypt_buffer(cli->trans_enc_state,
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("common_decrypt_buffer returned %s\n",
nt_errstr(status)));
- goto fail;
+ return status;
}
}
mid = SVAL(inbuf, smb_mid);
- num_pending = talloc_array_length(cli->pending);
+ num_pending = talloc_array_length(cli->conn.pending);
for (i=0; i<num_pending; i++) {
- if (mid == cli_smb_req_mid(cli->pending[i])) {
+ if (mid == cli_smb_req_mid(cli->conn.pending[i])) {
break;
}
}
if (i == num_pending) {
/* Dump unexpected reply */
- TALLOC_FREE(inbuf);
- goto done;
+ return NT_STATUS_RETRY;
}
oplock_break = false;
if (!oplock_break) {
/* Dump unexpected reply */
- TALLOC_FREE(inbuf);
- goto done;
+ return NT_STATUS_RETRY;
}
}
- req = cli->pending[i];
+ req = cli->conn.pending[i];
state = tevent_req_data(req, struct cli_smb_state);
if (!oplock_break /* oplock breaks are not signed */
&& !cli_check_sign_mac(cli, (char *)inbuf, state->seqnum+1)) {
DEBUG(10, ("cli_check_sign_mac failed\n"));
- TALLOC_FREE(inbuf);
- status = NT_STATUS_ACCESS_DENIED;
- close(cli->fd);
- cli->fd = -1;
- goto fail;
+ return NT_STATUS_ACCESS_DENIED;
}
- if (state->chained_requests == NULL) {
- state->inbuf = talloc_move(state, &inbuf);
- talloc_set_destructor(req, NULL);
- cli_smb_req_unset_pending(req);
- state->chain_num = 0;
- state->chain_length = 1;
- tevent_req_done(req);
- } else {
- struct tevent_req **chain = talloc_move(
- talloc_tos(), &state->chained_requests);
+ if (state->chained_requests != NULL) {
+ struct tevent_req **chain = talloc_move(frame,
+ &state->chained_requests);
int num_chained = talloc_array_length(chain);
+ /*
+ * We steal the inbuf to the chain,
+ * so that it will stay until all
+ * requests of the chain are finished.
+ *
+ * Each requests in the chain will
+ * hold a talloc reference to the chain.
+ * This way we do not expose the talloc_reference()
+ * behavior to the callers.
+ */
+ talloc_steal(chain, inbuf);
+
for (i=0; i<num_chained; i++) {
- state = tevent_req_data(chain[i], struct
- cli_smb_state);
+ struct tevent_req **ref;
+
+ req = chain[i];
+ state = tevent_req_data(req, struct cli_smb_state);
+
+ cli_smb_req_unset_pending(req);
+
+ /*
+ * as we finish multiple requests here
+ * we need to defer the callbacks as
+ * they could destroy our current stack state.
+ */
+ tevent_req_defer_callback(req, state->ev);
+
+ ref = talloc_reference(state, chain);
+ if (tevent_req_nomem(ref, req)) {
+ continue;
+ }
+
state->inbuf = inbuf;
state->chain_num = i;
state->chain_length = num_chained;
- tevent_req_done(chain[i]);
- }
- TALLOC_FREE(inbuf);
- TALLOC_FREE(chain);
- }
- done:
- if (talloc_array_length(cli->pending) > 0) {
- /*
- * Set up another read request for the other pending cli_smb
- * requests
- */
- state = tevent_req_data(cli->pending[0], struct cli_smb_state);
- subreq = read_smb_send(cli->pending, state->ev, cli->fd);
- if (subreq == NULL) {
- status = NT_STATUS_NO_MEMORY;
- goto fail;
+
+ tevent_req_done(req);
}
- tevent_req_set_callback(subreq, cli_smb_received, cli);
+
+ return NT_STATUS_RETRY;
}
- return;
- fail:
- /*
- * Cancel all pending requests. We don't do a for-loop walking
- * cli->pending because that array changes in
- * cli_smb_req_destructor().
- */
- while (talloc_array_length(cli->pending) > 0) {
- req = cli->pending[0];
- talloc_set_destructor(req, NULL);
- cli_smb_req_unset_pending(req);
- tevent_req_nterror(req, status);
+
+ cli_smb_req_unset_pending(req);
+
+ state->inbuf = talloc_move(state, &inbuf);
+ state->chain_num = 0;
+ state->chain_length = 1;
+
+ if (talloc_array_length(cli->conn.pending) == 0) {
+ tevent_req_done(req);
+ return NT_STATUS_OK;
}
+
+ tevent_req_defer_callback(req, state->ev);
+ tevent_req_done(req);
+ return NT_STATUS_RETRY;
}
NTSTATUS cli_smb_recv(struct tevent_req *req,
cmd = CVAL(state->inbuf, wct_ofs + 1);
}
- status = cli_pull_error((char *)state->inbuf);
-
- cli_set_error(state->cli, status);
+ state->cli->raw_status = cli_pull_raw_error(state->inbuf);
+ if (NT_STATUS_IS_DOS(state->cli->raw_status)) {
+ uint8_t eclass = NT_STATUS_DOS_CLASS(state->cli->raw_status);
+ uint16_t ecode = NT_STATUS_DOS_CODE(state->cli->raw_status);
+ /*
+ * TODO: is it really a good idea to do a mapping here?
+ *
+ * The old cli_pull_error() also does it, so I do not change
+ * the behavior yet.
+ */
+ status = dos_to_ntstatus(eclass, ecode);
+ } else {
+ status = state->cli->raw_status;
+ }
if (!have_andx_command((char *)state->inbuf, wct_ofs)) {
iovlen = 0;
for (i=0; i<num_reqs; i++) {
+ if (!tevent_req_is_in_progress(reqs[i])) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
state = tevent_req_data(reqs[i], struct cli_smb_state);
iovlen += state->iov_count;
}
return NT_STATUS_OK;
}
-uint8_t *cli_smb_inbuf(struct tevent_req *req)
-{
- struct cli_smb_state *state = tevent_req_data(
- req, struct cli_smb_state);
- return state->inbuf;
-}
-
bool cli_has_async_calls(struct cli_state *cli)
{
- return ((tevent_queue_length(cli->outgoing) != 0)
- || (talloc_array_length(cli->pending) != 0));
-}
-
-struct cli_smb_oplock_break_waiter_state {
- uint16_t fnum;
- uint8_t level;
-};
-
-static void cli_smb_oplock_break_waiter_done(struct tevent_req *subreq);
-
-struct tevent_req *cli_smb_oplock_break_waiter_send(TALLOC_CTX *mem_ctx,
- struct event_context *ev,
- struct cli_state *cli)
-{
- struct tevent_req *req, *subreq;
- struct cli_smb_oplock_break_waiter_state *state;
- struct cli_smb_state *smb_state;
-
- req = tevent_req_create(mem_ctx, &state,
- struct cli_smb_oplock_break_waiter_state);
- if (req == NULL) {
- return NULL;
- }
-
- /*
- * Create a fake SMB request that we will never send out. This is only
- * used to be set into the pending queue with the right mid.
- */
- subreq = cli_smb_req_create(mem_ctx, ev, cli, 0, 0, 0, NULL, 0, NULL);
- if (tevent_req_nomem(subreq, req)) {
- return tevent_req_post(req, ev);
- }
- smb_state = tevent_req_data(subreq, struct cli_smb_state);
- SSVAL(smb_state->header, smb_mid, 0xffff);
-
- if (!cli_smb_req_set_pending(subreq)) {
- tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
- return tevent_req_post(req, ev);
- }
- tevent_req_set_callback(subreq, cli_smb_oplock_break_waiter_done, req);
- return req;
-}
-
-static void cli_smb_oplock_break_waiter_done(struct tevent_req *subreq)
-{
- struct tevent_req *req = tevent_req_callback_data(
- subreq, struct tevent_req);
- struct cli_smb_oplock_break_waiter_state *state = tevent_req_data(
- req, struct cli_smb_oplock_break_waiter_state);
- uint8_t wct;
- uint16_t *vwv;
- uint32_t num_bytes;
- uint8_t *bytes;
- uint8_t *inbuf;
- NTSTATUS status;
-
- status = cli_smb_recv(subreq, state, &inbuf, 8, &wct, &vwv,
- &num_bytes, &bytes);
- TALLOC_FREE(subreq);
- if (!NT_STATUS_IS_OK(status)) {
- tevent_req_nterror(req, status);
- return;
- }
- state->fnum = SVAL(vwv+2, 0);
- state->level = CVAL(vwv+3, 1);
- tevent_req_done(req);
-}
-
-NTSTATUS cli_smb_oplock_break_waiter_recv(struct tevent_req *req,
- uint16_t *pfnum,
- uint8_t *plevel)
-{
- struct cli_smb_oplock_break_waiter_state *state = tevent_req_data(
- req, struct cli_smb_oplock_break_waiter_state);
- NTSTATUS status;
-
- if (tevent_req_is_nterror(req, &status)) {
- return status;
- }
- *pfnum = state->fnum;
- *plevel = state->level;
- return NT_STATUS_OK;
-}
-
-
-struct cli_session_request_state {
- struct tevent_context *ev;
- int sock;
- uint32 len_hdr;
- struct iovec iov[3];
- uint8_t nb_session_response;
-};
-
-static void cli_session_request_sent(struct tevent_req *subreq);
-static void cli_session_request_recvd(struct tevent_req *subreq);
-
-struct tevent_req *cli_session_request_send(TALLOC_CTX *mem_ctx,
- struct tevent_context *ev,
- int sock,
- const struct nmb_name *called,
- const struct nmb_name *calling)
-{
- struct tevent_req *req, *subreq;
- struct cli_session_request_state *state;
-
- req = tevent_req_create(mem_ctx, &state,
- struct cli_session_request_state);
- if (req == NULL) {
- return NULL;
- }
- state->ev = ev;
- state->sock = sock;
-
- state->iov[1].iov_base = name_mangle(
- state, called->name, called->name_type);
- if (tevent_req_nomem(state->iov[1].iov_base, req)) {
- return tevent_req_post(req, ev);
- }
- state->iov[1].iov_len = name_len(
- (unsigned char *)state->iov[1].iov_base,
- talloc_get_size(state->iov[1].iov_base));
-
- state->iov[2].iov_base = name_mangle(
- state, calling->name, calling->name_type);
- if (tevent_req_nomem(state->iov[2].iov_base, req)) {
- return tevent_req_post(req, ev);
- }
- state->iov[2].iov_len = name_len(
- (unsigned char *)state->iov[2].iov_base,
- talloc_get_size(state->iov[2].iov_base));
-
- _smb_setlen(((char *)&state->len_hdr),
- state->iov[1].iov_len + state->iov[2].iov_len);
- SCVAL((char *)&state->len_hdr, 0, 0x81);
-
- state->iov[0].iov_base = &state->len_hdr;
- state->iov[0].iov_len = sizeof(state->len_hdr);
-
- subreq = writev_send(state, ev, NULL, sock, true, state->iov, 3);
- if (tevent_req_nomem(subreq, req)) {
- return tevent_req_post(req, ev);
- }
- tevent_req_set_callback(subreq, cli_session_request_sent, req);
- return req;
-}
-
-static void cli_session_request_sent(struct tevent_req *subreq)
-{
- struct tevent_req *req = tevent_req_callback_data(
- subreq, struct tevent_req);
- struct cli_session_request_state *state = tevent_req_data(
- req, struct cli_session_request_state);
- ssize_t ret;
- int err;
-
- ret = writev_recv(subreq, &err);
- TALLOC_FREE(subreq);
- if (ret == -1) {
- tevent_req_error(req, err);
- return;
- }
- subreq = read_smb_send(state, state->ev, state->sock);
- if (tevent_req_nomem(subreq, req)) {
- return;
- }
- tevent_req_set_callback(subreq, cli_session_request_recvd, req);
-}
-
-static void cli_session_request_recvd(struct tevent_req *subreq)
-{
- struct tevent_req *req = tevent_req_callback_data(
- subreq, struct tevent_req);
- struct cli_session_request_state *state = tevent_req_data(
- req, struct cli_session_request_state);
- uint8_t *buf;
- ssize_t ret;
- int err;
-
- ret = read_smb_recv(subreq, talloc_tos(), &buf, &err);
- TALLOC_FREE(subreq);
-
- if (ret < 4) {
- ret = -1;
- err = EIO;
- }
- if (ret == -1) {
- tevent_req_error(req, err);
- return;
- }
- /*
- * In case of an error there is more information in the data
- * portion according to RFC1002. We're not subtle enough to
- * respond to the different error conditions, so drop the
- * error info here.
- */
- state->nb_session_response = CVAL(buf, 0);
- tevent_req_done(req);
-}
-
-bool cli_session_request_recv(struct tevent_req *req, int *err, uint8_t *resp)
-{
- struct cli_session_request_state *state = tevent_req_data(
- req, struct cli_session_request_state);
-
- if (tevent_req_is_unix_error(req, err)) {
- return false;
- }
- *resp = state->nb_session_response;
- return true;
+ return ((tevent_queue_length(cli->conn.outgoing) != 0)
+ || (talloc_array_length(cli->conn.pending) != 0));
}
git.samba.org / rusty / samba.git / blobdiff