#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, (char *)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);
-}
-
/**
* @brief Find the smb_cmd offset of the last command pushed
* @param[in] buf The buffer we're building up
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.
- */
-
-static int cli_async_req_destructor(struct async_req *req)
-{
- struct cli_request *cli_req = talloc_get_type_abort(
- req->private_data, struct cli_request);
- int i, pending;
- bool found = false;
-
- pending = 0;
-
- 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;
- }
- }
-
- SMB_ASSERT(found);
-
- if (pending == 0) {
- TALLOC_FREE(cli_req);
- }
-
- return 0;
-}
-
-/**
- * @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] bytes_alignment How shall we align "bytes"?
- * @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.
- */
-
-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,
- size_t bytes_alignment,
- uint32_t num_bytes,
- const uint8_t *bytes)
-{
- struct async_req **tmp_reqs;
- struct cli_request *req;
-
- req = cli->chain_accumulator;
-
- 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;
- }
- req->async = tmp_reqs;
- req->num_async += 1;
-
- req->async[req->num_async-1] = async_req_new(mem_ctx);
- if (req->async[req->num_async-1] == NULL) {
- DEBUG(0, ("async_req_new failed\n"));
- req->num_async -= 1;
- return NULL;
- }
- 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,
- bytes_alignment, num_bytes, bytes)) {
- goto fail;
- }
-
- return req->async[req->num_async-1];
-
- fail:
- TALLOC_FREE(req->async[req->num_async-1]);
- req->num_async -= 1;
- return NULL;
-}
-
-/**
- * @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.
- */
-
-bool cli_chain_cork(struct cli_state *cli, struct event_context *ev,
- size_t size_hint)
-{
- struct cli_request *req = NULL;
-
- SMB_ASSERT(cli->chain_accumulator == NULL);
-
- if (cli->fd == -1) {
- DEBUG(10, ("cli->fd closed\n"));
- return false;
- }
-
- 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;
- }
- }
-
- req = talloc(cli, struct cli_request);
- if (req == NULL) {
- goto fail;
- }
- req->cli = cli;
-
- if (size_hint == 0) {
- size_hint = 100;
- }
- req->outbuf = talloc_array(req, uint8_t, smb_wct + size_hint);
- if (req->outbuf == NULL) {
- goto fail;
- }
- req->outbuf = TALLOC_REALLOC_ARRAY(NULL, req->outbuf, uint8_t,
- smb_wct);
-
- req->num_async = 0;
- req->async = NULL;
-
- req->enc_state = NULL;
- req->recv_helper.fn = NULL;
-
- SSVAL(req->outbuf, smb_tid, cli->cnum);
- cli_setup_packet_buf(cli, (char *)req->outbuf);
-
- req->mid = cli_new_mid(cli);
-
- cli->chain_accumulator = req;
-
- DEBUG(10, ("cli_chain_cork: mid=%d\n", req->mid));
-
- 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
- */
-
-void cli_chain_uncork(struct cli_state *cli)
-{
- struct cli_request *req = cli->chain_accumulator;
- size_t smblen;
-
- SMB_ASSERT(req != NULL);
-
- DLIST_ADD_END(cli->outstanding_requests, req, struct cli_request *);
- talloc_set_destructor(req, cli_request_destructor);
-
- cli->chain_accumulator = NULL;
-
- SSVAL(req->outbuf, smb_mid, req->mid);
-
- smblen = talloc_get_size(req->outbuf) - 4;
-
- smb_setlen((char *)req->outbuf, smblen);
-
- if (smblen > 0x1ffff) {
- /*
- * This is a POSIX 14 word large write. Overwrite just the
- * size field, the '0xFFSMB' has been set by smb_setlen which
- * _smb_setlen_large does not do.
- */
- _smb_setlen_large(((char *)req->outbuf), smblen);
- }
-
- cli_calculate_sign_mac(cli, (char *)req->outbuf, &req->seqnum);
-
- if (cli_encryption_on(cli)) {
- NTSTATUS status;
- char *enc_buf;
-
- status = cli_encrypt_message(cli, (char *)req->outbuf,
- &enc_buf);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("Error in encrypting client message. "
- "Error %s\n", nt_errstr(status)));
- TALLOC_FREE(req);
- return;
- }
- req->outbuf = (uint8_t *)enc_buf;
- req->enc_state = cli->trans_enc_state;
- }
-
- req->sent = 0;
-
- event_fd_set_writeable(cli->fd_event);
-}
-
-/**
- * @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] bytes_alignment How shall we align "bytes"?
- * @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 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,
- size_t bytes_alignment,
- uint32_t num_bytes, const uint8_t *bytes)
-{
- 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;
- }
- uncork = true;
- }
-
- result = cli_request_chain(mem_ctx, ev, cli, smb_command,
- additional_flags, wct, vwv, bytes_alignment,
- num_bytes, bytes);
-
- if (result == NULL) {
- DEBUG(1, ("cli_request_chain failed\n"));
- }
-
- if (uncork) {
- cli_chain_uncork(cli);
- }
-
- return result;
-}
-
-/**
- * Calculate the current ofs to wct for requests like write&x
- * @param[in] req The smb request we're currently building
- * @retval how many bytes offset have we accumulated?
- */
-
-uint16_t cli_wct_ofs(const struct cli_state *cli)
-{
- size_t buf_size;
-
- if (cli->chain_accumulator == NULL) {
- return smb_wct - 4;
- }
-
- buf_size = talloc_get_size(cli->chain_accumulator->outbuf);
-
- if (buf_size == smb_wct) {
- return smb_wct - 4;
- }
-
- /*
- * Add alignment for subsequent requests
- */
-
- if ((buf_size % 4) != 0) {
- buf_size += (4 - (buf_size % 4));
- }
-
- return buf_size - 4;
-}
-
/**
* Figure out if there is an andx command behind the current one
* @param[in] buf The smb buffer to look at
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?
- */
-
-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;
-
- for (i = 0; i < cli_req->num_async; i++) {
- if (req == cli_req->async[i]) {
- break;
- }
- }
-
- if (i == cli_req->num_async) {
- cli_set_error(cli_req->cli, NT_STATUS_INVALID_PARAMETER);
- return NT_STATUS_INVALID_PARAMETER;
- }
-
- /**
- * The status we pull here is only relevant for the last reply in the
- * chain.
- */
-
- status = cli_pull_error(cli_req->inbuf);
-
- 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;
- }
-
- cmd = CVAL(cli_req->inbuf, smb_com);
- wct_ofs = smb_wct;
-
- for (j = 0; j < i; j++) {
- if (j < i-1) {
- if (cmd == 0xff) {
- return NT_STATUS_REQUEST_ABORTED;
- }
- if (!is_andx_req(cmd)) {
- return NT_STATUS_INVALID_NETWORK_RESPONSE;
- }
- }
-
- if (!have_andx_command(cli_req->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);
-
- /*
- * Skip the all-present length field. No overflow, we've just
- * put a 16-bit value into a size_t.
- */
- wct_ofs += 4;
-
- if (wct_ofs+2 > talloc_get_size(cli_req->inbuf)) {
- return NT_STATUS_INVALID_NETWORK_RESPONSE;
- }
-
- cmd = CVAL(cli_req->inbuf, wct_ofs + 1);
- }
-
- if (!have_andx_command(cli_req->inbuf, wct_ofs)
- && NT_STATUS_IS_ERR(status)) {
- /*
- * The last command takes the error code. All further commands
- * down the requested chain will get a
- * NT_STATUS_REQUEST_ABORTED.
- */
- return status;
- }
-
- done:
- wct = CVAL(cli_req->inbuf, wct_ofs);
-
- bytes_offset = wct_ofs + 1 + wct * sizeof(uint16_t);
- num_bytes = SVAL(cli_req->inbuf, bytes_offset);
-
- /*
- * 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))
- || (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;
-
- 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,
- struct cli_request **_req,
- uint16_t *_mid)
-{
- NTSTATUS status;
- struct cli_request *req = NULL;
- uint16_t mid;
-
- *_req = NULL;
- *_mid = 0;
-
- 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;
- }
-
- 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;
- }
-
- 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;
- }
- }
-
- mid = SVAL(pdu, smb_mid);
-
- for (req = cli->outstanding_requests; req; req = req->next) {
- if (req->mid == mid) {
- break;
- }
- }
-
- if (!req) {
- /* oplock breaks are not signed */
- goto done;
- }
-
- if (!cli_check_sign_mac(cli, pdu, req->seqnum+1)) {
- DEBUG(10, ("cli_check_sign_mac failed\n"));
- return NT_STATUS_ACCESS_DENIED;
- }
-
-done:
- *_req = req;
- *_mid = mid;
- return NT_STATUS_OK;
-}
-
-/**
- * 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)
-{
- struct cli_request *req, *next;
- uint16_t mid;
- size_t raw_pdu_len, buf_len, rest_len;
- char *pdu;
- int i;
- NTSTATUS status;
-
- int num_async;
-
- /*
- * 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;
-
- if (buf_len == raw_pdu_len) {
- /*
- * Optimal case: Exactly one PDU was in the socket buffer
- */
- pdu = cli->evt_inbuf;
- cli->evt_inbuf = NULL;
- }
- 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);
-
- memmove(cli->evt_inbuf, cli->evt_inbuf + raw_pdu_len,
- buf_len - raw_pdu_len);
-
- cli->evt_inbuf = TALLOC_REALLOC_ARRAY(
- NULL, cli->evt_inbuf, char, rest_len);
-
- if (pdu == NULL) {
- status = NT_STATUS_NO_MEMORY;
- goto invalidate_requests;
- }
- }
- 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);
-
- if (cli->evt_inbuf == NULL) {
- status = NT_STATUS_NO_MEMORY;
- goto invalidate_requests;
- }
- }
- }
-
- status = validate_smb_crypto(cli, pdu, &req, &mid);
- if (!NT_STATUS_IS_OK(status)) {
- goto invalidate_requests;
- }
-
- DEBUG(10, ("handle_incoming_pdu: got mid %d\n", mid));
-
- if (req == NULL) {
- DEBUG(3, ("Request for mid %d not found, dumping PDU\n", mid));
-
- TALLOC_FREE(pdu);
- return;
- }
-
- 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.
- */
-
- 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]);
- }
- }
- }
- return;
-
- invalidate_requests:
-
- DEBUG(10, ("handle_incoming_pdu: Aborting with %s\n",
- nt_errstr(status)));
-
- for (req = cli->outstanding_requests; req; req = next) {
- next = req->next;
- if (req->num_async) {
- async_req_nterror(req->async[0], status);
- }
- }
- return;
-}
-
-/**
- * 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)
-{
- struct cli_state *cli = (struct cli_state *)p;
- struct cli_request *req, *next;
- NTSTATUS status;
-
- DEBUG(11, ("cli_state_handler called with flags %d\n", flags));
-
- 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;
- }
- }
-
- 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);
- }
- }
-
- return;
-
- sock_error:
-
- for (req = cli->outstanding_requests; req; req = next) {
- int i, num_async;
-
- next = req->next;
- num_async = req->num_async;
-
- for (i=0; i<num_async; i++) {
- async_req_nterror(req->async[i], status);
- }
- }
- TALLOC_FREE(cli->fd_event);
- close(cli->fd);
- cli->fd = -1;
-}
-
#define MAX_SMB_IOV 5
struct cli_smb_state {
git.samba.org / abartlet / samba.git / .git / commitdiff