#include "includes.h"
-static void cli_state_handler(struct event_context *event_ctx,
- struct fd_event *event, uint16 flags, void *p);
-
/**
* Fetch an error out of a NBT packet
* @param[in] buf The SMB packet
return;
}
-/**
- * Allocate a new mid
- * @param[in] cli The client connection
- * @retval The new, unused mid
- */
-
-static uint16_t cli_new_mid(struct cli_state *cli)
-{
- uint16_t result;
- struct cli_request *req;
-
- while (true) {
- result = cli->mid++;
- if (result == 0) {
- continue;
- }
-
- for (req = cli->outstanding_requests; req; req = req->next) {
- if (result == req->mid) {
- break;
- }
- }
-
- if (req == NULL) {
- return result;
- }
- }
-}
-
-/**
- * Print an async req that happens to be a cli_request
- * @param[in] mem_ctx The TALLOC_CTX to put the result on
- * @param[in] req The request to print
- * @retval The string representation of "req"
- */
-
-static char *cli_request_print(TALLOC_CTX *mem_ctx, struct async_req *req)
-{
- char *result = async_req_print(mem_ctx, req);
- struct cli_request *cli_req = talloc_get_type_abort(
- req->private_data, struct cli_request);
-
- if (result == NULL) {
- return NULL;
- }
-
- return talloc_asprintf_append_buffer(
- result, "mid=%d\n", cli_req->mid);
-}
-
-/**
- * Destroy a cli_request
- * @param[in] req The cli_request to kill
- * @retval Can't fail
- */
-
-static int cli_request_destructor(struct cli_request *req)
-{
- if (req->enc_state != NULL) {
- common_free_enc_buffer(req->enc_state, req->outbuf);
- }
- DLIST_REMOVE(req->cli->outstanding_requests, req);
- if (req->cli->outstanding_requests == NULL) {
- TALLOC_FREE(req->cli->fd_event);
- }
- return 0;
-}
-
-/**
- * Are there already requests waiting in the chain_accumulator?
- * @param[in] cli The cli_state we want to check
- * @retval reply :-)
- */
-
-bool cli_in_chain(struct cli_state *cli)
-{
- if (cli->chain_accumulator == NULL) {
- return false;
- }
-
- return (cli->chain_accumulator->num_async != 0);
-}
-
-/**
- * Is the SMB command able to hold an AND_X successor
- * @param[in] cmd The SMB command in question
- * @retval Can we add a chained request after "cmd"?
- */
-
-static bool is_andx_req(uint8_t cmd)
-{
- switch (cmd) {
- case SMBtconX:
- case SMBlockingX:
- case SMBopenX:
- case SMBreadX:
- case SMBwriteX:
- case SMBsesssetupX:
- case SMBulogoffX:
- case SMBntcreateX:
- return true;
- break;
- default:
- break;
- }
-
- return false;
-}
-
/**
* @brief Find the smb_cmd offset of the last command pushed
* @param[in] buf The buffer we're building up
* to the chain. Find the offset to the place where we have to put our cmd.
*/
-static bool find_andx_cmd_ofs(char *buf, size_t *pofs)
+static bool find_andx_cmd_ofs(uint8_t *buf, size_t *pofs)
{
uint8_t cmd;
size_t ofs;
* *poutbuf.
*/
-bool smb_splice_chain(char **poutbuf, uint8_t smb_command,
+bool smb_splice_chain(uint8_t **poutbuf, uint8_t smb_command,
uint8_t wct, const uint16_t *vwv,
size_t bytes_alignment,
- uint16_t num_bytes, const uint8_t *bytes)
+ uint32_t num_bytes, const uint8_t *bytes)
{
- char *outbuf;
+ uint8_t *outbuf;
size_t old_size, new_size;
size_t ofs;
size_t chain_padding = 0;
new_size = old_size + chain_padding + 1 + wct * sizeof(uint16_t) + 2;
if ((bytes_alignment != 0) && ((new_size % bytes_alignment) != 0)) {
- bytes_padding = bytes_alignment + (new_size % bytes_alignment);
+ bytes_padding = bytes_alignment - (new_size % bytes_alignment);
}
new_size += bytes_padding + num_bytes;
- if (new_size > 0xffff) {
+ if ((smb_command != SMBwriteX) && (new_size > 0xffff)) {
DEBUG(1, ("splice_chain: %u bytes won't fit\n",
(unsigned)new_size));
return false;
}
- outbuf = TALLOC_REALLOC_ARRAY(NULL, *poutbuf, char, new_size);
+ outbuf = TALLOC_REALLOC_ARRAY(NULL, *poutbuf, uint8_t, new_size);
if (outbuf == NULL) {
DEBUG(0, ("talloc failed\n"));
return false;
if (!find_andx_cmd_ofs(outbuf, &andx_cmd_ofs)) {
DEBUG(1, ("invalid command chain\n"));
*poutbuf = TALLOC_REALLOC_ARRAY(
- NULL, *poutbuf, char, old_size);
+ NULL, *poutbuf, uint8_t, old_size);
return false;
}
ofs = old_size;
+ /*
+ * Push the chained request:
+ *
+ * wct field
+ */
+
SCVAL(outbuf, ofs, wct);
ofs += 1;
+ /*
+ * vwv array
+ */
+
memcpy(outbuf + ofs, vwv, sizeof(uint16_t) * wct);
ofs += sizeof(uint16_t) * wct;
+ /*
+ * bcc (byte count)
+ */
+
SSVAL(outbuf, ofs, num_bytes + bytes_padding);
ofs += sizeof(uint16_t);
+ /*
+ * padding
+ */
+
if (bytes_padding != 0) {
memset(outbuf + ofs, 0, bytes_padding);
ofs += bytes_padding;
}
+ /*
+ * The bytes field
+ */
+
memcpy(outbuf + ofs, bytes, num_bytes);
return true;
}
/**
- * @brief Destroy an async_req that is the visible part of a cli_request
- * @param[in] req The request to kill
- * @retval Return 0 to make talloc happy
- *
- * This destructor is a bit tricky: Because a cli_request can host more than
- * one async_req for chained requests, we need to make sure that the
- * "cli_request" that we were part of is correctly destroyed at the right
- * time. This is done by NULLing out ourself from the "async" member of our
- * "cli_request". If there is none left, then also TALLOC_FREE() the
- * cli_request, which was a talloc child of the client connection cli_state.
+ * Figure out if there is an andx command behind the current one
+ * @param[in] buf The smb buffer to look at
+ * @param[in] ofs The offset to the wct field that is followed by the cmd
+ * @retval Is there a command following?
*/
-static int cli_async_req_destructor(struct async_req *req)
+static bool have_andx_command(const char *buf, uint16_t ofs)
{
- struct cli_request *cli_req = talloc_get_type_abort(
- req->private_data, struct cli_request);
- int i, pending;
- bool found = false;
+ uint8_t wct;
+ size_t buflen = talloc_get_size(buf);
- pending = 0;
+ if ((ofs == buflen-1) || (ofs == buflen)) {
+ return false;
+ }
- for (i=0; i<cli_req->num_async; i++) {
- if (cli_req->async[i] == req) {
- cli_req->async[i] = NULL;
- found = true;
- }
- if (cli_req->async[i] != NULL) {
- pending += 1;
- }
+ wct = CVAL(buf, ofs);
+ if (wct < 2) {
+ /*
+ * Not enough space for the command and a following pointer
+ */
+ return false;
}
+ return (CVAL(buf, ofs+1) != 0xff);
+}
- SMB_ASSERT(found);
+#define MAX_SMB_IOV 5
- if (pending == 0) {
- TALLOC_FREE(cli_req);
- }
+struct cli_smb_state {
+ struct tevent_context *ev;
+ struct cli_state *cli;
+ uint8_t header[smb_wct+1]; /* Space for the header including the wct */
- return 0;
-}
+ /*
+ * For normal requests, cli_smb_req_send chooses a mid. Secondary
+ * trans requests need to use the mid of the primary request, so we
+ * need a place to store it. Assume it's set if != 0.
+ */
+ uint16_t mid;
-/**
- * @brief Chain up a request
- * @param[in] mem_ctx The TALLOC_CTX for the result
- * @param[in] ev The event context that will call us back
- * @param[in] cli The cli_state we queue the request up for
- * @param[in] smb_command The command that we want to issue
- * @param[in] additional_flags open_and_x wants to add oplock header flags
- * @param[in] wct How many words?
- * @param[in] vwv The words, already in network order
- * @param[in] num_bytes How many bytes?
- * @param[in] bytes The data the request ships
- *
- * cli_request_chain() is the core of the SMB request marshalling routine. It
- * will create a new async_req structure in the cli->chain_accumulator->async
- * array and marshall the smb_cmd, the vwv array and the bytes into
- * cli->chain_accumulator->outbuf.
- */
+ uint16_t *vwv;
+ uint8_t bytecount_buf[2];
+
+ struct iovec iov[MAX_SMB_IOV+3];
+ int iov_count;
-static struct async_req *cli_request_chain(TALLOC_CTX *mem_ctx,
- struct event_context *ev,
- struct cli_state *cli,
- uint8_t smb_command,
- uint8_t additional_flags,
- uint8_t wct, const uint16_t *vwv,
- uint16_t num_bytes,
- const uint8_t *bytes)
+ uint8_t *inbuf;
+ uint32_t seqnum;
+ int chain_num;
+ struct tevent_req **chained_requests;
+};
+
+static uint16_t cli_alloc_mid(struct cli_state *cli)
{
- struct async_req **tmp_reqs;
- struct cli_request *req;
+ int num_pending = talloc_array_length(cli->pending);
+ uint16_t result;
- req = cli->chain_accumulator;
+ while (true) {
+ int i;
- tmp_reqs = TALLOC_REALLOC_ARRAY(req, req->async, struct async_req *,
- req->num_async + 1);
- if (tmp_reqs == NULL) {
- DEBUG(0, ("talloc failed\n"));
- return NULL;
+ result = cli->mid++;
+ if ((result == 0) || (result == 0xffff)) {
+ continue;
+ }
+
+ for (i=0; i<num_pending; i++) {
+ if (result == cli_smb_req_mid(cli->pending[i])) {
+ break;
+ }
+ }
+
+ if (i == num_pending) {
+ return result;
+ }
}
- req->async = tmp_reqs;
- req->num_async += 1;
+}
- req->async[req->num_async-1] = async_req_new(mem_ctx, ev);
- if (req->async[req->num_async-1] == NULL) {
- DEBUG(0, ("async_req_new failed\n"));
- req->num_async -= 1;
- return NULL;
+void cli_smb_req_unset_pending(struct tevent_req *req)
+{
+ 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 i;
+
+ 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);
+ return;
}
- req->async[req->num_async-1]->private_data = req;
- req->async[req->num_async-1]->print = cli_request_print;
- talloc_set_destructor(req->async[req->num_async-1],
- cli_async_req_destructor);
- if (!smb_splice_chain(&req->outbuf, smb_command, wct, vwv,
- 0, num_bytes, bytes)) {
- goto fail;
+ for (i=0; i<num_pending; i++) {
+ if (req == cli->pending[i]) {
+ break;
+ }
+ }
+ if (i == num_pending) {
+ /*
+ * Something's seriously broken. Just returning here is the
+ * right thing nevertheless, the point of this routine is to
+ * remove ourselves from cli->pending.
+ */
+ return;
}
- return req->async[req->num_async-1];
+ /*
+ * Remove ourselves from the cli->pending array
+ */
+ if (num_pending > 1) {
+ cli->pending[i] = cli->pending[num_pending-1];
+ }
- fail:
- TALLOC_FREE(req->async[req->num_async-1]);
- req->num_async -= 1;
- return NULL;
+ /*
+ * 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);
+ return;
}
-/**
- * @brief prepare a cli_state to accept a chain of requests
- * @param[in] cli The cli_state we want to queue up in
- * @param[in] ev The event_context that will call us back for the socket
- * @param[in] size_hint How many bytes are expected, just an optimization
- * @retval Did we have enough memory?
- *
- * cli_chain_cork() sets up a new cli_request in cli->chain_accumulator. If
- * cli is used in an async fashion, i.e. if we have outstanding requests, then
- * we do not have to create a fd event. If cli is used only with the sync
- * helpers, we need to create the fd_event here.
- *
- * If you want to issue a chained request to the server, do a
- * cli_chain_cork(), then do you cli_open_send(), cli_read_and_x_send(),
- * cli_close_send() and so on. The async requests that come out of
- * cli_xxx_send() are normal async requests with the difference that they
- * won't be shipped individually. But the event_context will still trigger the
- * req->async.fn to be called on every single request.
- *
- * You have to take care yourself that you only issue chainable requests in
- * the middle of the chain.
- */
+static int cli_smb_req_destructor(struct tevent_req *req)
+{
+ cli_smb_req_unset_pending(req);
+ return 0;
+}
-bool cli_chain_cork(struct cli_state *cli, struct event_context *ev,
- size_t size_hint)
+static void cli_smb_received(struct tevent_req *subreq);
+
+bool cli_smb_req_set_pending(struct tevent_req *req)
{
- struct cli_request *req = NULL;
+ struct cli_smb_state *state = tevent_req_data(
+ req, struct cli_smb_state);
+ 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);
+
+ pending = talloc_realloc(cli, cli->pending, struct tevent_req *,
+ num_pending+1);
+ if (pending == NULL) {
+ return false;
+ }
+ pending[num_pending] = req;
+ cli->pending = pending;
+ talloc_set_destructor(req, cli_smb_req_destructor);
- SMB_ASSERT(cli->chain_accumulator == NULL);
+ if (num_pending > 0) {
+ return true;
+ }
- if (cli->fd == -1) {
- DEBUG(10, ("cli->fd closed\n"));
+ /*
+ * 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);
return false;
}
+ tevent_req_set_callback(subreq, cli_smb_received, cli);
+ return true;
+}
- if (cli->fd_event == NULL) {
- SMB_ASSERT(cli->outstanding_requests == NULL);
- cli->fd_event = event_add_fd(ev, cli, cli->fd,
- EVENT_FD_READ,
- cli_state_handler, cli);
- if (cli->fd_event == NULL) {
- return false;
- }
+/*
+ * Fetch a smb request's mid. Only valid after the request has been sent by
+ * cli_smb_req_send().
+ */
+uint16_t cli_smb_req_mid(struct tevent_req *req)
+{
+ struct cli_smb_state *state = tevent_req_data(
+ req, struct cli_smb_state);
+ return SVAL(state->header, smb_mid);
+}
+
+void cli_smb_req_set_mid(struct tevent_req *req, uint16_t mid)
+{
+ struct cli_smb_state *state = tevent_req_data(
+ req, struct cli_smb_state);
+ state->mid = mid;
+}
+
+static size_t iov_len(const struct iovec *iov, int count)
+{
+ size_t result = 0;
+ int i;
+ for (i=0; i<count; i++) {
+ result += iov[i].iov_len;
}
+ return result;
+}
- req = talloc(cli, struct cli_request);
- if (req == NULL) {
- goto fail;
+static uint8_t *iov_concat(TALLOC_CTX *mem_ctx, const struct iovec *iov,
+ int count)
+{
+ size_t len = iov_len(iov, count);
+ size_t copied;
+ uint8_t *buf;
+ int i;
+
+ buf = talloc_array(mem_ctx, uint8_t, len);
+ if (buf == NULL) {
+ return NULL;
+ }
+ copied = 0;
+ for (i=0; i<count; i++) {
+ memcpy(buf+copied, iov[i].iov_base, iov[i].iov_len);
+ copied += iov[i].iov_len;
+ }
+ return buf;
+}
+
+struct tevent_req *cli_smb_req_create(TALLOC_CTX *mem_ctx,
+ struct event_context *ev,
+ struct cli_state *cli,
+ uint8_t smb_command,
+ uint8_t additional_flags,
+ uint8_t wct, uint16_t *vwv,
+ int iov_count,
+ struct iovec *bytes_iov)
+{
+ struct tevent_req *result;
+ struct cli_smb_state *state;
+
+ if (iov_count > MAX_SMB_IOV) {
+ /*
+ * Should not happen :-)
+ */
+ return NULL;
}
- req->cli = cli;
- if (size_hint == 0) {
- size_hint = 100;
+ result = tevent_req_create(mem_ctx, &state, struct cli_smb_state);
+ if (result == NULL) {
+ return NULL;
}
- req->outbuf = talloc_array(req, char, smb_wct + size_hint);
- if (req->outbuf == NULL) {
- goto fail;
+ state->ev = ev;
+ state->cli = cli;
+ state->mid = 0; /* Set to auto-choose in cli_smb_req_send */
+ state->chain_num = 0;
+ state->chained_requests = NULL;
+
+ cli_setup_packet_buf(cli, (char *)state->header);
+ SCVAL(state->header, smb_com, smb_command);
+ SSVAL(state->header, smb_tid, cli->cnum);
+ SCVAL(state->header, smb_wct, wct);
+
+ state->vwv = vwv;
+
+ SSVAL(state->bytecount_buf, 0, iov_len(bytes_iov, iov_count));
+
+ state->iov[0].iov_base = state->header;
+ state->iov[0].iov_len = sizeof(state->header);
+ state->iov[1].iov_base = state->vwv;
+ state->iov[1].iov_len = wct * sizeof(uint16_t);
+ state->iov[2].iov_base = state->bytecount_buf;
+ state->iov[2].iov_len = sizeof(uint16_t);
+
+ if (iov_count != 0) {
+ memcpy(&state->iov[3], bytes_iov,
+ iov_count * sizeof(*bytes_iov));
}
- req->outbuf = TALLOC_REALLOC_ARRAY(NULL, req->outbuf, char, smb_wct);
+ state->iov_count = iov_count + 3;
- req->num_async = 0;
- req->async = NULL;
+ return result;
+}
- req->enc_state = NULL;
- req->recv_helper.fn = NULL;
+static bool cli_signv(struct cli_state *cli, struct iovec *iov, int count,
+ uint32_t *seqnum)
+{
+ uint8_t *buf;
- SSVAL(req->outbuf, smb_tid, cli->cnum);
- cli_setup_packet_buf(cli, req->outbuf);
+ /*
+ * Obvious optimization: Make cli_calculate_sign_mac work with struct
+ * iovec directly. MD5Update would do that just fine.
+ */
- req->mid = cli_new_mid(cli);
+ if ((count <= 0) || (iov[0].iov_len < smb_wct)) {
+ return false;
+ }
- cli->chain_accumulator = req;
+ buf = iov_concat(talloc_tos(), iov, count);
+ if (buf == NULL) {
+ return false;
+ }
- DEBUG(10, ("cli_chain_cork: mid=%d\n", req->mid));
+ cli_calculate_sign_mac(cli, (char *)buf, seqnum);
+ memcpy(iov[0].iov_base, buf, iov[0].iov_len);
+ TALLOC_FREE(buf);
return true;
- fail:
- TALLOC_FREE(req);
- if (cli->outstanding_requests == NULL) {
- TALLOC_FREE(cli->fd_event);
- }
- return false;
}
-/**
- * Ship a request queued up via cli_request_chain()
- * @param[in] cl The connection
- */
+static void cli_smb_sent(struct tevent_req *subreq);
-void cli_chain_uncork(struct cli_state *cli)
+static bool cli_smb_req_iov_send(struct tevent_req *req,
+ struct cli_smb_state *state,
+ struct iovec *iov, int iov_count)
{
- struct cli_request *req = cli->chain_accumulator;
-
- SMB_ASSERT(req != NULL);
+ struct tevent_req *subreq;
- DLIST_ADD_END(cli->outstanding_requests, req, struct cli_request *);
- talloc_set_destructor(req, cli_request_destructor);
+ if (iov[0].iov_len < smb_wct) {
+ return false;
+ }
- cli->chain_accumulator = NULL;
+ if (state->mid != 0) {
+ SSVAL(iov[0].iov_base, smb_mid, state->mid);
+ } else {
+ SSVAL(iov[0].iov_base, smb_mid, cli_alloc_mid(state->cli));
+ }
- SSVAL(req->outbuf, smb_mid, req->mid);
- smb_setlen(req->outbuf, talloc_get_size(req->outbuf) - 4);
+ smb_setlen((char *)iov[0].iov_base, iov_len(iov, iov_count) - 4);
- cli_calculate_sign_mac(cli, req->outbuf);
+ if (!cli_signv(state->cli, iov, iov_count, &state->seqnum)) {
+ return false;
+ }
- if (cli_encryption_on(cli)) {
+ if (cli_encryption_on(state->cli)) {
NTSTATUS status;
- char *enc_buf;
+ char *buf, *enc_buf;
- status = cli_encrypt_message(cli, req->outbuf, &enc_buf);
+ buf = (char *)iov_concat(talloc_tos(), iov, iov_count);
+ if (buf == NULL) {
+ return false;
+ }
+ status = cli_encrypt_message(state->cli, (char *)buf,
+ &enc_buf);
+ TALLOC_FREE(buf);
if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("Error in encrypting client message. "
- "Error %s\n", nt_errstr(status)));
- TALLOC_FREE(req);
- return;
+ DEBUG(0, ("Error in encrypting client message: %s\n",
+ nt_errstr(status)));
+ return false;
+ }
+ buf = (char *)talloc_memdup(state, enc_buf,
+ smb_len(enc_buf)+4);
+ SAFE_FREE(enc_buf);
+ if (buf == NULL) {
+ return false;
}
- req->outbuf = enc_buf;
- req->enc_state = cli->trans_enc_state;
+ iov[0].iov_base = buf;
+ iov[0].iov_len = talloc_get_size(buf);
+ subreq = writev_send(state, state->ev, state->cli->outgoing,
+ state->cli->fd, iov, 1);
+ } else {
+ subreq = writev_send(state, state->ev, state->cli->outgoing,
+ state->cli->fd, iov, iov_count);
}
+ if (subreq == NULL) {
+ return false;
+ }
+ tevent_req_set_callback(subreq, cli_smb_sent, req);
+ return true;
+}
+
+bool cli_smb_req_send(struct tevent_req *req)
+{
+ struct cli_smb_state *state = tevent_req_data(
+ req, struct cli_smb_state);
- req->sent = 0;
+ if (state->cli->fd == -1) {
+ return false;
+ }
- event_fd_set_writeable(cli->fd_event);
+ return cli_smb_req_iov_send(req, state, state->iov, state->iov_count);
}
-/**
- * @brief Send a request to the server
- * @param[in] mem_ctx The TALLOC_CTX for the result
- * @param[in] ev The event context that will call us back
- * @param[in] cli The cli_state we queue the request up for
- * @param[in] smb_command The command that we want to issue
- * @param[in] additional_flags open_and_x wants to add oplock header flags
- * @param[in] wct How many words?
- * @param[in] vwv The words, already in network order
- * @param[in] num_bytes How many bytes?
- * @param[in] bytes The data the request ships
- *
- * This is the generic routine to be used by the cli_xxx_send routines.
- */
+struct tevent_req *cli_smb_send(TALLOC_CTX *mem_ctx,
+ struct event_context *ev,
+ struct cli_state *cli,
+ uint8_t smb_command,
+ uint8_t additional_flags,
+ uint8_t wct, uint16_t *vwv,
+ uint32_t num_bytes,
+ const uint8_t *bytes)
+{
+ struct tevent_req *req;
+ struct iovec iov;
+
+ iov.iov_base = CONST_DISCARD(char *, bytes);
+ iov.iov_len = num_bytes;
-struct async_req *cli_request_send(TALLOC_CTX *mem_ctx,
- struct event_context *ev,
- struct cli_state *cli,
- uint8_t smb_command,
- uint8_t additional_flags,
- uint8_t wct, const uint16_t *vwv,
- uint16_t num_bytes, const uint8_t *bytes)
+ req = cli_smb_req_create(mem_ctx, ev, cli, smb_command,
+ additional_flags, wct, vwv, 1, &iov);
+ if (req == NULL) {
+ return NULL;
+ }
+ if (!cli_smb_req_send(req)) {
+ TALLOC_FREE(req);
+ }
+ return req;
+}
+
+static void cli_smb_sent(struct tevent_req *subreq)
{
- struct async_req *result;
- bool uncork = false;
-
- if (cli->chain_accumulator == NULL) {
- if (!cli_chain_cork(cli, ev,
- wct * sizeof(uint16_t) + num_bytes + 3)) {
- DEBUG(1, ("cli_chain_cork failed\n"));
- return NULL;
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct cli_smb_state *state = tevent_req_data(
+ req, struct cli_smb_state);
+ ssize_t nwritten;
+ int err;
+
+ nwritten = writev_recv(subreq, &err);
+ TALLOC_FREE(subreq);
+ if (nwritten == -1) {
+ tevent_req_nterror(req, map_nt_error_from_unix(err));
+ return;
+ }
+
+ switch (CVAL(state->header, smb_com)) {
+ case SMBtranss:
+ case SMBtranss2:
+ case SMBnttranss:
+ case SMBntcancel:
+ 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;
}
- uncork = true;
}
- result = cli_request_chain(mem_ctx, ev, cli, smb_command,
- additional_flags, wct, vwv,
- num_bytes, bytes);
+ if (!cli_smb_req_set_pending(req)) {
+ tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
+ return;
+ }
+}
- if (result == NULL) {
- DEBUG(1, ("cli_request_chain failed\n"));
+static void cli_smb_received(struct tevent_req *subreq)
+{
+ struct cli_state *cli = tevent_req_callback_data(
+ subreq, struct cli_state);
+ struct tevent_req *req;
+ struct cli_smb_state *state;
+ struct tevent_context *ev;
+ NTSTATUS status;
+ uint8_t *inbuf;
+ ssize_t received;
+ int num_pending;
+ int i, err;
+ uint16_t mid;
+ bool oplock_break;
+
+ received = read_smb_recv(subreq, talloc_tos(), &inbuf, &err);
+ TALLOC_FREE(subreq);
+ if (received == -1) {
+ status = map_nt_error_from_unix(err);
+ goto fail;
}
- if (uncork) {
- cli_chain_uncork(cli);
+ 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 result;
-}
+ if (cli_encryption_on(cli) && (CVAL(inbuf, 0) == 0)) {
+ uint16_t enc_ctx_num;
-/**
- * Figure out if there is an andx command behind the current one
- * @param[in] buf The smb buffer to look at
- * @param[in] ofs The offset to the wct field that is followed by the cmd
- * @retval Is there a command following?
- */
+ 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;
+ }
-static bool have_andx_command(const char *buf, uint16_t ofs)
-{
- uint8_t wct;
- size_t buflen = talloc_get_size(buf);
+ 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;
+ }
- if ((ofs == buflen-1) || (ofs == buflen)) {
- return false;
+ status = common_decrypt_buffer(cli->trans_enc_state,
+ (char *)inbuf);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10, ("common_decrypt_buffer returned %s\n",
+ nt_errstr(status)));
+ goto fail;
+ }
}
- wct = CVAL(buf, ofs);
- if (wct < 2) {
+ mid = SVAL(inbuf, smb_mid);
+ num_pending = talloc_array_length(cli->pending);
+
+ for (i=0; i<num_pending; i++) {
+ if (mid == cli_smb_req_mid(cli->pending[i])) {
+ break;
+ }
+ }
+ if (i == num_pending) {
+ /* Dump unexpected reply */
+ TALLOC_FREE(inbuf);
+ goto done;
+ }
+
+ oplock_break = false;
+
+ if (mid == 0xffff) {
/*
- * Not enough space for the command and a following pointer
+ * Paranoia checks that this is really an oplock break request.
*/
- return false;
+ oplock_break = (smb_len(inbuf) == 51); /* hdr + 8 words */
+ oplock_break &= ((CVAL(inbuf, smb_flg) & FLAG_REPLY) == 0);
+ oplock_break &= (CVAL(inbuf, smb_com) == SMBlockingX);
+ oplock_break &= (SVAL(inbuf, smb_vwv6) == 0);
+ oplock_break &= (SVAL(inbuf, smb_vwv7) == 0);
+
+ if (!oplock_break) {
+ /* Dump unexpected reply */
+ TALLOC_FREE(inbuf);
+ goto done;
+ }
}
- return (CVAL(buf, ofs+1) != 0xff);
-}
-/**
- * @brief Pull reply data out of a request
- * @param[in] req The request that we just received a reply for
- * @param[out] pwct How many words did the server send?
- * @param[out] pvwv The words themselves
- * @param[out] pnum_bytes How many bytes did the server send?
- * @param[out] pbytes The bytes themselves
- * @retval Was the reply formally correct?
- */
+ req = cli->pending[i];
+ state = tevent_req_data(req, struct cli_smb_state);
+ ev = state->ev;
-NTSTATUS cli_pull_reply(struct async_req *req,
- uint8_t *pwct, uint16_t **pvwv,
- uint16_t *pnum_bytes, uint8_t **pbytes)
-{
- struct cli_request *cli_req = talloc_get_type_abort(
- req->private_data, struct cli_request);
- uint8_t wct, cmd;
- uint16_t num_bytes;
- size_t wct_ofs, bytes_offset;
- int i, j;
- NTSTATUS status;
+ 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;
+ goto fail;
+ }
- for (i = 0; i < cli_req->num_async; i++) {
- if (req == cli_req->async[i]) {
- break;
+ if (state->chained_requests == NULL) {
+ state->inbuf = talloc_move(state, &inbuf);
+ talloc_set_destructor(req, NULL);
+ cli_smb_req_destructor(req);
+ tevent_req_done(req);
+ } else {
+ struct tevent_req **chain = talloc_move(
+ talloc_tos(), &state->chained_requests);
+ int num_chained = talloc_array_length(chain);
+
+ for (i=0; i<num_chained; i++) {
+ state = tevent_req_data(chain[i], struct
+ cli_smb_state);
+ state->inbuf = inbuf;
+ state->chain_num = i;
+ tevent_req_done(chain[i]);
}
+ TALLOC_FREE(inbuf);
+ TALLOC_FREE(chain);
}
-
- if (i == cli_req->num_async) {
- cli_set_error(cli_req->cli, NT_STATUS_INVALID_PARAMETER);
- return NT_STATUS_INVALID_PARAMETER;
+ 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_set_callback(subreq, cli_smb_received, cli);
}
-
- /**
- * The status we pull here is only relevant for the last reply in the
- * chain.
+ 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_destructor(req);
+ tevent_req_nterror(req, status);
+ }
+}
- status = cli_pull_error(cli_req->inbuf);
+NTSTATUS cli_smb_recv(struct tevent_req *req, uint8_t min_wct,
+ uint8_t *pwct, uint16_t **pvwv,
+ uint32_t *pnum_bytes, uint8_t **pbytes)
+{
+ struct cli_smb_state *state = tevent_req_data(
+ req, struct cli_smb_state);
+ NTSTATUS status = NT_STATUS_OK;
+ uint8_t cmd, wct;
+ uint16_t num_bytes;
+ size_t wct_ofs, bytes_offset;
+ int i;
- if (i == 0) {
- if (NT_STATUS_IS_ERR(status)
- && !have_andx_command(cli_req->inbuf, smb_wct)) {
- cli_set_error(cli_req->cli, status);
- return status;
- }
- wct_ofs = smb_wct;
- goto done;
+ if (tevent_req_is_nterror(req, &status)) {
+ return status;
+ }
+
+ if (state->inbuf == NULL) {
+ /* This was a request without a reply */
+ return NT_STATUS_OK;
}
- cmd = CVAL(cli_req->inbuf, smb_com);
wct_ofs = smb_wct;
+ cmd = CVAL(state->inbuf, smb_com);
- for (j = 0; j < i; j++) {
- if (j < i-1) {
+ for (i=0; i<state->chain_num; i++) {
+ if (i < state->chain_num-1) {
if (cmd == 0xff) {
return NT_STATUS_REQUEST_ABORTED;
}
}
}
- if (!have_andx_command(cli_req->inbuf, wct_ofs)) {
+ if (!have_andx_command((char *)state->inbuf, wct_ofs)) {
/*
* This request was not completed because a previous
* request in the chain had received an error.
return NT_STATUS_REQUEST_ABORTED;
}
- wct_ofs = SVAL(cli_req->inbuf, wct_ofs + 3);
+ wct_ofs = SVAL(state->inbuf, wct_ofs + 3);
/*
* Skip the all-present length field. No overflow, we've just
*/
wct_ofs += 4;
- if (wct_ofs+2 > talloc_get_size(cli_req->inbuf)) {
+ if (wct_ofs+2 > talloc_get_size(state->inbuf)) {
return NT_STATUS_INVALID_NETWORK_RESPONSE;
}
- cmd = CVAL(cli_req->inbuf, wct_ofs + 1);
+ cmd = CVAL(state->inbuf, wct_ofs + 1);
}
- if (!have_andx_command(cli_req->inbuf, wct_ofs)
+ status = cli_pull_error((char *)state->inbuf);
+
+ if (!have_andx_command((char *)state->inbuf, wct_ofs)
&& NT_STATUS_IS_ERR(status)) {
/*
* The last command takes the error code. All further commands
return status;
}
- done:
- wct = CVAL(cli_req->inbuf, wct_ofs);
-
+ wct = CVAL(state->inbuf, wct_ofs);
bytes_offset = wct_ofs + 1 + wct * sizeof(uint16_t);
- num_bytes = SVAL(cli_req->inbuf, bytes_offset);
+ num_bytes = SVAL(state->inbuf, bytes_offset);
+
+ if (wct < min_wct) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
/*
* wct_ofs is a 16-bit value plus 4, wct is a 8-bit value, num_bytes
* is a 16-bit value. So bytes_offset being size_t should be far from
* wrapping.
*/
-
- if ((bytes_offset + 2 > talloc_get_size(cli_req->inbuf))
+ if ((bytes_offset + 2 > talloc_get_size(state->inbuf))
|| (bytes_offset > 0xffff)) {
return NT_STATUS_INVALID_NETWORK_RESPONSE;
}
- *pwct = wct;
- *pvwv = (uint16_t *)(cli_req->inbuf + wct_ofs + 1);
- *pnum_bytes = num_bytes;
- *pbytes = (uint8_t *)cli_req->inbuf + bytes_offset + 2;
+ if (pwct != NULL) {
+ *pwct = wct;
+ }
+ if (pvwv != NULL) {
+ *pvwv = (uint16_t *)(state->inbuf + wct_ofs + 1);
+ }
+ if (pnum_bytes != NULL) {
+ *pnum_bytes = num_bytes;
+ }
+ if (pbytes != NULL) {
+ *pbytes = (uint8_t *)state->inbuf + bytes_offset + 2;
+ }
return NT_STATUS_OK;
}
-/**
- * Decrypt a PDU, check the signature
- * @param[in] cli The cli_state that received something
- * @param[in] pdu The incoming bytes
- * @retval error code
- */
-
-
-static NTSTATUS validate_smb_crypto(struct cli_state *cli, char *pdu)
+size_t cli_smb_wct_ofs(struct tevent_req **reqs, int num_reqs)
{
- NTSTATUS status;
-
- if ((IVAL(pdu, 4) != 0x424d53ff) /* 0xFF"SMB" */
- && (SVAL(pdu, 4) != 0x45ff)) /* 0xFF"E" */ {
- DEBUG(10, ("Got non-SMB PDU\n"));
- return NT_STATUS_INVALID_NETWORK_RESPONSE;
- }
-
- if (cli_encryption_on(cli) && CVAL(pdu, 0) == 0) {
- uint16_t enc_ctx_num;
-
- status = get_enc_ctx_num((uint8_t *)pdu, &enc_ctx_num);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(10, ("get_enc_ctx_num returned %s\n",
- nt_errstr(status)));
- return status;
- }
+ size_t wct_ofs;
+ int i;
- 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));
- return NT_STATUS_INVALID_HANDLE;
- }
+ wct_ofs = smb_wct - 4;
- status = common_decrypt_buffer(cli->trans_enc_state, pdu);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(10, ("common_decrypt_buffer returned %s\n",
- nt_errstr(status)));
- return status;
- }
+ for (i=0; i<num_reqs; i++) {
+ struct cli_smb_state *state;
+ state = tevent_req_data(reqs[i], struct cli_smb_state);
+ wct_ofs += iov_len(state->iov+1, state->iov_count-1);
+ wct_ofs = (wct_ofs + 3) & ~3;
}
-
- if (!cli_check_sign_mac(cli, pdu)) {
- DEBUG(10, ("cli_check_sign_mac failed\n"));
- return NT_STATUS_ACCESS_DENIED;
- }
-
- return NT_STATUS_OK;
+ return wct_ofs;
}
-/**
- * A PDU has arrived on cli->evt_inbuf
- * @param[in] cli The cli_state that received something
- */
-
-static void handle_incoming_pdu(struct cli_state *cli)
+bool cli_smb_chain_send(struct tevent_req **reqs, int num_reqs)
{
- struct cli_request *req;
- uint16_t mid;
- size_t raw_pdu_len, buf_len, pdu_len, rest_len;
- char *pdu;
- int i;
- NTSTATUS status;
-
- int num_async;
+ struct cli_smb_state *first_state = tevent_req_data(
+ reqs[0], struct cli_smb_state);
+ struct cli_smb_state *last_state = tevent_req_data(
+ reqs[num_reqs-1], struct cli_smb_state);
+ struct cli_smb_state *state;
+ size_t wct_offset;
+ size_t chain_padding = 0;
+ int i, iovlen;
+ struct iovec *iov = NULL;
+ struct iovec *this_iov;
+
+ iovlen = 0;
+ for (i=0; i<num_reqs; i++) {
+ state = tevent_req_data(reqs[i], struct cli_smb_state);
+ iovlen += state->iov_count;
+ }
- /*
- * The encrypted PDU len might differ from the unencrypted one
- */
- raw_pdu_len = smb_len(cli->evt_inbuf) + 4;
- buf_len = talloc_get_size(cli->evt_inbuf);
- rest_len = buf_len - raw_pdu_len;
+ iov = talloc_array(last_state, struct iovec, iovlen);
+ if (iov == NULL) {
+ goto fail;
+ }
- if (buf_len == raw_pdu_len) {
- /*
- * Optimal case: Exactly one PDU was in the socket buffer
- */
- pdu = cli->evt_inbuf;
- cli->evt_inbuf = NULL;
+ first_state->chained_requests = (struct tevent_req **)talloc_memdup(
+ last_state, reqs, sizeof(*reqs) * num_reqs);
+ if (first_state->chained_requests == NULL) {
+ goto fail;
}
- else {
- DEBUG(11, ("buf_len = %d, raw_pdu_len = %d, splitting "
- "buffer\n", (int)buf_len, (int)raw_pdu_len));
- if (raw_pdu_len < rest_len) {
- /*
- * The PDU is shorter, talloc_memdup that one.
- */
- pdu = (char *)talloc_memdup(
- cli, cli->evt_inbuf, raw_pdu_len);
+ wct_offset = smb_wct - 4;
+ this_iov = iov;
- memmove(cli->evt_inbuf, cli->evt_inbuf + raw_pdu_len,
- buf_len - raw_pdu_len);
+ for (i=0; i<num_reqs; i++) {
+ size_t next_padding = 0;
+ uint16_t *vwv;
- cli->evt_inbuf = TALLOC_REALLOC_ARRAY(
- NULL, cli->evt_inbuf, char, rest_len);
+ state = tevent_req_data(reqs[i], struct cli_smb_state);
- if (pdu == NULL) {
- status = NT_STATUS_NO_MEMORY;
- goto invalidate_requests;
+ if (i < num_reqs-1) {
+ if (!is_andx_req(CVAL(state->header, smb_com))
+ || CVAL(state->header, smb_wct) < 2) {
+ goto fail;
}
}
- else {
- /*
- * The PDU is larger than the rest, talloc_memdup the
- * rest
- */
- pdu = cli->evt_inbuf;
- cli->evt_inbuf = (char *)talloc_memdup(
- cli, pdu + raw_pdu_len, rest_len);
+ wct_offset += iov_len(state->iov+1, state->iov_count-1) + 1;
+ if ((wct_offset % 4) != 0) {
+ next_padding = 4 - (wct_offset % 4);
+ }
+ wct_offset += next_padding;
+ vwv = state->vwv;
+
+ if (i < num_reqs-1) {
+ struct cli_smb_state *next_state = tevent_req_data(
+ reqs[i+1], struct cli_smb_state);
+ SCVAL(vwv+0, 0, CVAL(next_state->header, smb_com));
+ SCVAL(vwv+0, 1, 0);
+ SSVAL(vwv+1, 0, wct_offset);
+ } else if (is_andx_req(CVAL(state->header, smb_com))) {
+ /* properly end the chain */
+ SCVAL(vwv+0, 0, 0xff);
+ SCVAL(vwv+0, 1, 0xff);
+ SSVAL(vwv+1, 0, 0);
+ }
- if (cli->evt_inbuf == NULL) {
- status = NT_STATUS_NO_MEMORY;
- goto invalidate_requests;
- }
+ if (i == 0) {
+ this_iov[0] = state->iov[0];
+ } else {
+ /*
+ * This one is a bit subtle. We have to add
+ * chain_padding bytes between the requests, and we
+ * have to also include the wct field of the
+ * subsequent requests. We use the subsequent header
+ * for the padding, it contains the wct field in its
+ * last byte.
+ */
+ this_iov[0].iov_len = chain_padding+1;
+ this_iov[0].iov_base = &state->header[
+ sizeof(state->header) - this_iov[0].iov_len];
+ memset(this_iov[0].iov_base, 0, this_iov[0].iov_len-1);
}
+ memcpy(this_iov+1, state->iov+1,
+ sizeof(struct iovec) * (state->iov_count-1));
+ this_iov += state->iov_count;
+ chain_padding = next_padding;
}
- status = validate_smb_crypto(cli, pdu);
- if (!NT_STATUS_IS_OK(status)) {
- goto invalidate_requests;
+ if (!cli_smb_req_iov_send(reqs[0], last_state, iov, iovlen)) {
+ goto fail;
}
+ return true;
+ fail:
+ TALLOC_FREE(iov);
+ return false;
+}
- mid = SVAL(pdu, smb_mid);
+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;
+}
- DEBUG(10, ("handle_incoming_pdu: got mid %d\n", mid));
+bool cli_has_async_calls(struct cli_state *cli)
+{
+ return ((tevent_queue_length(cli->outgoing) != 0)
+ || (talloc_array_length(cli->pending) != 0));
+}
- for (req = cli->outstanding_requests; req; req = req->next) {
- if (req->mid == mid) {
- break;
- }
- }
+struct cli_smb_oplock_break_waiter_state {
+ uint16_t fnum;
+ uint8_t level;
+};
- pdu_len = smb_len(pdu) + 4;
+static void cli_smb_oplock_break_waiter_done(struct tevent_req *subreq);
- if (req == NULL) {
- DEBUG(3, ("Request for mid %d not found, dumping PDU\n", mid));
+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;
- TALLOC_FREE(pdu);
- return;
+ req = tevent_req_create(mem_ctx, &state,
+ struct cli_smb_oplock_break_waiter_state);
+ if (req == NULL) {
+ return NULL;
}
- req->inbuf = talloc_move(req, &pdu);
-
/*
- * Freeing the last async_req will free the req (see
- * cli_async_req_destructor). So make a copy of req->num_async, we
- * can't reference it in the last round.
+ * 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.
*/
-
- num_async = req->num_async;
-
- for (i=0; i<num_async; i++) {
- /**
- * A request might have been talloc_free()'ed before we arrive
- * here. It will have removed itself from req->async via its
- * destructor cli_async_req_destructor().
- */
- if (req->async[i] != NULL) {
- if (req->recv_helper.fn != NULL) {
- req->recv_helper.fn(req->async[i]);
- } else {
- async_req_done(req->async[i]);
- }
- }
+ 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);
}
- return;
+ smb_state = tevent_req_data(subreq, struct cli_smb_state);
+ SSVAL(smb_state->header, smb_mid, 0xffff);
- invalidate_requests:
-
- DEBUG(10, ("handle_incoming_pdu: Aborting with %s\n",
- nt_errstr(status)));
-
- for (req = cli->outstanding_requests; req; req = req->next) {
- async_req_error(req->async[0], status);
+ if (!cli_smb_req_set_pending(subreq)) {
+ tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
+ return tevent_req_post(req, ev);
}
- return;
+ tevent_req_set_callback(subreq, cli_smb_oplock_break_waiter_done, req);
+ return req;
}
-/**
- * fd event callback. This is the basic connection to the socket
- * @param[in] event_ctx The event context that called us
- * @param[in] event The event that fired
- * @param[in] flags EVENT_FD_READ | EVENT_FD_WRITE
- * @param[in] p private_data, in this case the cli_state
- */
-
-static void cli_state_handler(struct event_context *event_ctx,
- struct fd_event *event, uint16 flags, void *p)
+static void cli_smb_oplock_break_waiter_done(struct tevent_req *subreq)
{
- struct cli_state *cli = (struct cli_state *)p;
- struct cli_request *req;
+ 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;
NTSTATUS status;
- DEBUG(11, ("cli_state_handler called with flags %d\n", flags));
-
- if (flags & EVENT_FD_READ) {
- int res, available;
- size_t old_size, new_size;
- char *tmp;
-
- res = ioctl(cli->fd, FIONREAD, &available);
- if (res == -1) {
- DEBUG(10, ("ioctl(FIONREAD) failed: %s\n",
- strerror(errno)));
- status = map_nt_error_from_unix(errno);
- goto sock_error;
- }
-
- if (available == 0) {
- /* EOF */
- status = NT_STATUS_END_OF_FILE;
- goto sock_error;
- }
-
- old_size = talloc_get_size(cli->evt_inbuf);
- new_size = old_size + available;
-
- if (new_size < old_size) {
- /* wrap */
- status = NT_STATUS_UNEXPECTED_IO_ERROR;
- goto sock_error;
- }
-
- tmp = TALLOC_REALLOC_ARRAY(cli, cli->evt_inbuf, char,
- new_size);
- if (tmp == NULL) {
- /* nomem */
- status = NT_STATUS_NO_MEMORY;
- goto sock_error;
- }
- cli->evt_inbuf = tmp;
-
- res = sys_recv(cli->fd, cli->evt_inbuf + old_size, available, 0);
- if (res == -1) {
- DEBUG(10, ("recv failed: %s\n", strerror(errno)));
- status = map_nt_error_from_unix(errno);
- goto sock_error;
- }
-
- DEBUG(11, ("cli_state_handler: received %d bytes, "
- "smb_len(evt_inbuf) = %d\n", (int)res,
- smb_len(cli->evt_inbuf)));
-
- /* recv *might* have returned less than announced */
- new_size = old_size + res;
-
- /* shrink, so I don't expect errors here */
- cli->evt_inbuf = TALLOC_REALLOC_ARRAY(cli, cli->evt_inbuf,
- char, new_size);
-
- while ((cli->evt_inbuf != NULL)
- && ((smb_len(cli->evt_inbuf) + 4) <= new_size)) {
- /*
- * we've got a complete NBT level PDU in evt_inbuf
- */
- handle_incoming_pdu(cli);
- new_size = talloc_get_size(cli->evt_inbuf);
- }
+ status = cli_smb_recv(subreq, 8, &wct, &vwv, &num_bytes, &bytes);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(subreq);
+ tevent_req_nterror(req, status);
+ return;
}
+ state->fnum = SVAL(vwv+2, 0);
+ state->level = CVAL(vwv+3, 1);
+ tevent_req_done(req);
+}
- if (flags & EVENT_FD_WRITE) {
- size_t to_send;
- ssize_t sent;
-
- for (req = cli->outstanding_requests; req; req = req->next) {
- to_send = smb_len(req->outbuf)+4;
- if (to_send > req->sent) {
- break;
- }
- }
-
- if (req == NULL) {
- if (cli->fd_event != NULL) {
- event_fd_set_not_writeable(cli->fd_event);
- }
- return;
- }
-
- sent = sys_send(cli->fd, req->outbuf + req->sent,
- to_send - req->sent, 0);
-
- if (sent < 0) {
- status = map_nt_error_from_unix(errno);
- goto sock_error;
- }
-
- req->sent += sent;
-
- if (req->sent == to_send) {
- return;
- }
- }
- return;
+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;
- sock_error:
- for (req = cli->outstanding_requests; req; req = req->next) {
- int i;
- for (i=0; i<req->num_async; i++) {
- async_req_error(req->async[i], status);
- }
+ if (tevent_req_is_nterror(req, &status)) {
+ return status;
}
- TALLOC_FREE(cli->fd_event);
- close(cli->fd);
- cli->fd = -1;
+ *pfnum = state->fnum;
+ *plevel = state->level;
+ return NT_STATUS_OK;
}
git.samba.org / ira / wip.git / blobdiff