Unix SMB/CIFS implementation.
Infrastructure for async SMB client requests
Copyright (C) Volker Lendecke 2008
+ Copyright (C) Stefan Metzmacher 2011
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
*/
#include "includes.h"
-#include "libsmb/libsmb.h"
+#include "system/network.h"
#include "../lib/async_req/async_sock.h"
#include "../lib/util/tevent_ntstatus.h"
#include "../lib/util/tevent_unix.h"
-#include "async_smb.h"
+#include "lib/util/util_net.h"
+#include "lib/util/dlinklist.h"
+#include "../libcli/smb/smb_common.h"
#include "../libcli/smb/smb_seal.h"
-#include "libsmb/nmblib.h"
+#include "../libcli/smb/smb_signing.h"
#include "../libcli/smb/read_smb.h"
+#include "smbXcli_base.h"
+#include "librpc/ndr/libndr.h"
-static NTSTATUS cli_pull_raw_error(const uint8_t *buf)
+struct smbXcli_conn;
+struct smbXcli_req;
+struct smbXcli_session;
+
+struct smbXcli_conn {
+ int read_fd;
+ int write_fd;
+ struct sockaddr_storage local_ss;
+ struct sockaddr_storage remote_ss;
+ const char *remote_name;
+
+ struct tevent_queue *outgoing;
+ struct tevent_req **pending;
+ struct tevent_req *read_smb_req;
+
+ enum protocol_types protocol;
+ bool allow_signing;
+ bool desire_signing;
+ bool mandatory_signing;
+
+ /*
+ * The incoming dispatch function should return:
+ * - NT_STATUS_RETRY, if more incoming PDUs are expected.
+ * - NT_STATUS_OK, if no more processing is desired, e.g.
+ * the dispatch function called
+ * tevent_req_done().
+ * - All other return values disconnect the connection.
+ */
+ NTSTATUS (*dispatch_incoming)(struct smbXcli_conn *conn,
+ TALLOC_CTX *tmp_mem,
+ uint8_t *inbuf);
+
+ struct {
+ struct {
+ uint32_t capabilities;
+ uint32_t max_xmit;
+ } client;
+
+ struct {
+ uint32_t capabilities;
+ uint32_t max_xmit;
+ uint16_t max_mux;
+ uint16_t security_mode;
+ bool readbraw;
+ bool writebraw;
+ bool lockread;
+ bool writeunlock;
+ uint32_t session_key;
+ struct GUID guid;
+ DATA_BLOB gss_blob;
+ uint8_t challenge[8];
+ const char *workgroup;
+ const char *name;
+ int time_zone;
+ NTTIME system_time;
+ } server;
+
+ uint32_t capabilities;
+ uint32_t max_xmit;
+
+ uint16_t mid;
+
+ struct smb_signing_state *signing;
+ struct smb_trans_enc_state *trans_enc;
+
+ struct tevent_req *read_braw_req;
+ } smb1;
+
+ struct {
+ struct {
+ uint32_t capabilities;
+ uint16_t security_mode;
+ struct GUID guid;
+ } client;
+
+ struct {
+ uint32_t capabilities;
+ uint16_t security_mode;
+ struct GUID guid;
+ uint32_t max_trans_size;
+ uint32_t max_read_size;
+ uint32_t max_write_size;
+ NTTIME system_time;
+ NTTIME start_time;
+ DATA_BLOB gss_blob;
+ } server;
+
+ uint64_t mid;
+ uint16_t cur_credits;
+ uint16_t max_credits;
+ } smb2;
+
+ struct smbXcli_session *sessions;
+};
+
+struct smbXcli_session {
+ struct smbXcli_session *prev, *next;
+ struct smbXcli_conn *conn;
+
+ struct {
+ uint64_t session_id;
+ uint16_t session_flags;
+ DATA_BLOB application_key;
+ DATA_BLOB signing_key;
+ bool should_sign;
+ DATA_BLOB channel_signing_key;
+ } smb2;
+};
+
+struct smbXcli_req_state {
+ struct tevent_context *ev;
+ struct smbXcli_conn *conn;
+ struct smbXcli_session *session; /* maybe NULL */
+
+ uint8_t length_hdr[4];
+
+ bool one_way;
+
+ uint8_t *inbuf;
+
+ struct {
+ /* Space for the header including the wct */
+ uint8_t hdr[HDR_VWV];
+
+ /*
+ * For normal requests, smb1cli_req_send chooses a mid.
+ * SecondaryV trans requests need to use the mid of the primary
+ * request, so we need a place to store it.
+ * Assume it is set if != 0.
+ */
+ uint16_t mid;
+
+ uint16_t *vwv;
+ uint8_t bytecount_buf[2];
+
+#define MAX_SMB_IOV 10
+ /* length_hdr, hdr, words, byte_count, buffers */
+ struct iovec iov[1 + 3 + MAX_SMB_IOV];
+ int iov_count;
+
+ bool one_way_seqnum;
+ uint32_t seqnum;
+ struct tevent_req **chained_requests;
+
+ uint8_t recv_cmd;
+ NTSTATUS recv_status;
+ /* always an array of 3 talloc elements */
+ struct iovec *recv_iov;
+ } smb1;
+
+ struct {
+ const uint8_t *fixed;
+ uint16_t fixed_len;
+ const uint8_t *dyn;
+ uint32_t dyn_len;
+
+ uint8_t hdr[64];
+ uint8_t pad[7]; /* padding space for compounding */
+
+ /* always an array of 3 talloc elements */
+ struct iovec *recv_iov;
+
+ uint16_t credit_charge;
+
+ bool signing_skipped;
+ bool notify_async;
+ bool got_async;
+ } smb2;
+};
+
+static int smbXcli_conn_destructor(struct smbXcli_conn *conn)
{
- const uint8_t *hdr = buf + NBT_HDR_SIZE;
- uint32_t flags2 = SVAL(hdr, HDR_FLG2);
- NTSTATUS status = NT_STATUS(IVAL(hdr, HDR_RCLS));
+ /*
+ * NT_STATUS_OK, means we do not notify the callers
+ */
+ smbXcli_conn_disconnect(conn, NT_STATUS_OK);
- if (NT_STATUS_IS_OK(status)) {
- return NT_STATUS_OK;
+ while (conn->sessions) {
+ conn->sessions->conn = NULL;
+ DLIST_REMOVE(conn->sessions, conn->sessions);
}
- if (flags2 & FLAGS2_32_BIT_ERROR_CODES) {
- return status;
+<<<<<<< HEAD
+ if (conn->smb1.trans_enc) {
+ TALLOC_FREE(conn->smb1.trans_enc);
}
- return NT_STATUS_DOS(CVAL(hdr, HDR_RCLS), SVAL(hdr, HDR_ERR));
+=======
+>>>>>>> 7efc635... s3-libsmb: Convert struct smb_trans_enc_state to talloc
+ return 0;
}
-/**
- * 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 bool have_andx_command(const char *buf, uint16_t ofs, uint8_t cmd)
+struct smbXcli_conn *smbXcli_conn_create(TALLOC_CTX *mem_ctx,
+ int fd,
+ const char *remote_name,
+ enum smb_signing_setting signing_state,
+ uint32_t smb1_capabilities,
+ struct GUID *client_guid,
+ uint32_t smb2_capabilities)
{
- uint8_t wct;
- size_t buflen = talloc_get_size(buf);
+ struct smbXcli_conn *conn = NULL;
+ void *ss = NULL;
+ struct sockaddr *sa = NULL;
+ socklen_t sa_length;
+ int ret;
+
+ conn = talloc_zero(mem_ctx, struct smbXcli_conn);
+ if (!conn) {
+ return NULL;
+ }
+
+ conn->read_fd = fd;
+ conn->write_fd = dup(fd);
+ if (conn->write_fd == -1) {
+ goto error;
+ }
+
+ conn->remote_name = talloc_strdup(conn, remote_name);
+ if (conn->remote_name == NULL) {
+ goto error;
+ }
+
+
+ ss = (void *)&conn->local_ss;
+ sa = (struct sockaddr *)ss;
+ sa_length = sizeof(conn->local_ss);
+ ret = getsockname(fd, sa, &sa_length);
+ if (ret == -1) {
+ goto error;
+ }
+ ss = (void *)&conn->remote_ss;
+ sa = (struct sockaddr *)ss;
+ sa_length = sizeof(conn->remote_ss);
+ ret = getpeername(fd, sa, &sa_length);
+ if (ret == -1) {
+ goto error;
+ }
+
+ conn->outgoing = tevent_queue_create(conn, "smbXcli_outgoing");
+ if (conn->outgoing == NULL) {
+ goto error;
+ }
+ conn->pending = NULL;
+
+ conn->protocol = PROTOCOL_NONE;
+
+ switch (signing_state) {
+ case SMB_SIGNING_OFF:
+ /* never */
+ conn->allow_signing = false;
+ conn->desire_signing = false;
+ conn->mandatory_signing = false;
+ break;
+ case SMB_SIGNING_DEFAULT:
+ case SMB_SIGNING_IF_REQUIRED:
+ /* if the server requires it */
+ conn->allow_signing = true;
+ conn->desire_signing = false;
+ conn->mandatory_signing = false;
+ break;
+ case SMB_SIGNING_REQUIRED:
+ /* always */
+ conn->allow_signing = true;
+ conn->desire_signing = true;
+ conn->mandatory_signing = true;
+ break;
+ }
+
+ conn->smb1.client.capabilities = smb1_capabilities;
+ conn->smb1.client.max_xmit = UINT16_MAX;
+
+ conn->smb1.capabilities = conn->smb1.client.capabilities;
+ conn->smb1.max_xmit = 1024;
+
+ conn->smb1.mid = 1;
+
+ /* initialise signing */
+ conn->smb1.signing = smb_signing_init(conn,
+ conn->allow_signing,
+ conn->desire_signing,
+ conn->mandatory_signing);
+ if (!conn->smb1.signing) {
+ goto error;
+ }
+
+ conn->smb2.client.security_mode = SMB2_NEGOTIATE_SIGNING_ENABLED;
+ if (conn->mandatory_signing) {
+ conn->smb2.client.security_mode |= SMB2_NEGOTIATE_SIGNING_REQUIRED;
+ }
+ if (client_guid) {
+ conn->smb2.client.guid = *client_guid;
+ }
+ conn->smb2.client.capabilities = smb2_capabilities;
+
+ conn->smb2.cur_credits = 1;
+ conn->smb2.max_credits = 0;
+
+ talloc_set_destructor(conn, smbXcli_conn_destructor);
+ return conn;
+
+ error:
+ if (conn->write_fd != -1) {
+ close(conn->write_fd);
+ }
+ TALLOC_FREE(conn);
+ return NULL;
+}
- if (!is_andx_req(cmd)) {
+bool smbXcli_conn_is_connected(struct smbXcli_conn *conn)
+{
+ if (conn == NULL) {
return false;
}
- if ((ofs == buflen-1) || (ofs == buflen)) {
+ if (conn->read_fd == -1) {
return false;
}
- wct = CVAL(buf, ofs);
- if (wct < 2) {
+ return true;
+}
+
+enum protocol_types smbXcli_conn_protocol(struct smbXcli_conn *conn)
+{
+ return conn->protocol;
+}
+
+bool smbXcli_conn_use_unicode(struct smbXcli_conn *conn)
+{
+ if (conn->protocol >= PROTOCOL_SMB2_02) {
+ return true;
+ }
+
+ if (conn->smb1.capabilities & CAP_UNICODE) {
+ return true;
+ }
+
+ return false;
+}
+
+void smbXcli_conn_set_sockopt(struct smbXcli_conn *conn, const char *options)
+{
+ set_socket_options(conn->read_fd, options);
+}
+
+const struct sockaddr_storage *smbXcli_conn_local_sockaddr(struct smbXcli_conn *conn)
+{
+ return &conn->local_ss;
+}
+
+const struct sockaddr_storage *smbXcli_conn_remote_sockaddr(struct smbXcli_conn *conn)
+{
+ return &conn->remote_ss;
+}
+
+const char *smbXcli_conn_remote_name(struct smbXcli_conn *conn)
+{
+ return conn->remote_name;
+}
+
+uint16_t smbXcli_conn_max_requests(struct smbXcli_conn *conn)
+{
+ if (conn->protocol >= PROTOCOL_SMB2_02) {
/*
- * Not enough space for the command and a following pointer
+ * TODO...
*/
- return false;
+ return 1;
}
- return (CVAL(buf, ofs+1) != 0xff);
+
+ return conn->smb1.server.max_mux;
}
-#define MAX_SMB_IOV 5
+NTTIME smbXcli_conn_server_system_time(struct smbXcli_conn *conn)
+{
+ if (conn->protocol >= PROTOCOL_SMB2_02) {
+ return conn->smb2.server.system_time;
+ }
-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 conn->smb1.server.system_time;
+}
- /*
- * 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;
+const DATA_BLOB *smbXcli_conn_server_gss_blob(struct smbXcli_conn *conn)
+{
+ if (conn->protocol >= PROTOCOL_SMB2_02) {
+ return &conn->smb2.server.gss_blob;
+ }
- uint16_t *vwv;
- uint8_t bytecount_buf[2];
+ return &conn->smb1.server.gss_blob;
+}
- struct iovec iov[MAX_SMB_IOV+3];
- int iov_count;
+const struct GUID *smbXcli_conn_server_guid(struct smbXcli_conn *conn)
+{
+ if (conn->protocol >= PROTOCOL_SMB2_02) {
+ return &conn->smb2.server.guid;
+ }
- uint8_t *inbuf;
- uint32_t seqnum;
- int chain_num;
- int chain_length;
- struct tevent_req **chained_requests;
+ return &conn->smb1.server.guid;
+}
- bool one_way;
+struct smbXcli_conn_samba_suicide_state {
+ struct smbXcli_conn *conn;
+ struct iovec iov;
+ uint8_t buf[9];
};
-static uint16_t cli_alloc_mid(struct cli_state *cli)
+static void smbXcli_conn_samba_suicide_done(struct tevent_req *subreq);
+
+struct tevent_req *smbXcli_conn_samba_suicide_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct smbXcli_conn *conn,
+ uint8_t exitcode)
+{
+ struct tevent_req *req, *subreq;
+ struct smbXcli_conn_samba_suicide_state *state;
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct smbXcli_conn_samba_suicide_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->conn = conn;
+ SIVAL(state->buf, 4, 0x74697865);
+ SCVAL(state->buf, 8, exitcode);
+ _smb_setlen_nbt(state->buf, sizeof(state->buf)-4);
+
+ state->iov.iov_base = state->buf;
+ state->iov.iov_len = sizeof(state->buf);
+
+ subreq = writev_send(state, ev, conn->outgoing, conn->write_fd,
+ false, &state->iov, 1);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, smbXcli_conn_samba_suicide_done, req);
+ return req;
+}
+
+static void smbXcli_conn_samba_suicide_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct smbXcli_conn_samba_suicide_state *state = tevent_req_data(
+ req, struct smbXcli_conn_samba_suicide_state);
+ ssize_t nwritten;
+ int err;
+
+ nwritten = writev_recv(subreq, &err);
+ TALLOC_FREE(subreq);
+ if (nwritten == -1) {
+ NTSTATUS status = map_nt_error_from_unix_common(err);
+ smbXcli_conn_disconnect(state->conn, status);
+ return;
+ }
+ tevent_req_done(req);
+}
+
+NTSTATUS smbXcli_conn_samba_suicide_recv(struct tevent_req *req)
+{
+ return tevent_req_simple_recv_ntstatus(req);
+}
+
+NTSTATUS smbXcli_conn_samba_suicide(struct smbXcli_conn *conn,
+ uint8_t exitcode)
+{
+ TALLOC_CTX *frame = talloc_stackframe();
+ struct tevent_context *ev;
+ struct tevent_req *req;
+ NTSTATUS status = NT_STATUS_NO_MEMORY;
+ bool ok;
+
+ if (smbXcli_conn_has_async_calls(conn)) {
+ /*
+ * Can't use sync call while an async call is in flight
+ */
+ status = NT_STATUS_INVALID_PARAMETER_MIX;
+ goto fail;
+ }
+ ev = tevent_context_init(frame);
+ if (ev == NULL) {
+ goto fail;
+ }
+ req = smbXcli_conn_samba_suicide_send(frame, ev, conn, exitcode);
+ if (req == NULL) {
+ goto fail;
+ }
+ ok = tevent_req_poll(req, ev);
+ if (!ok) {
+ status = map_nt_error_from_unix_common(errno);
+ goto fail;
+ }
+ status = smbXcli_conn_samba_suicide_recv(req);
+ fail:
+ TALLOC_FREE(frame);
+ return status;
+}
+
+uint32_t smb1cli_conn_capabilities(struct smbXcli_conn *conn)
+{
+ return conn->smb1.capabilities;
+}
+
+uint32_t smb1cli_conn_max_xmit(struct smbXcli_conn *conn)
+{
+ return conn->smb1.max_xmit;
+}
+
+uint32_t smb1cli_conn_server_session_key(struct smbXcli_conn *conn)
+{
+ return conn->smb1.server.session_key;
+}
+
+const uint8_t *smb1cli_conn_server_challenge(struct smbXcli_conn *conn)
+{
+ return conn->smb1.server.challenge;
+}
+
+uint16_t smb1cli_conn_server_security_mode(struct smbXcli_conn *conn)
+{
+ return conn->smb1.server.security_mode;
+}
+
+bool smb1cli_conn_server_readbraw(struct smbXcli_conn *conn)
+{
+ return conn->smb1.server.readbraw;
+}
+
+bool smb1cli_conn_server_writebraw(struct smbXcli_conn *conn)
+{
+ return conn->smb1.server.writebraw;
+}
+
+bool smb1cli_conn_server_lockread(struct smbXcli_conn *conn)
+{
+ return conn->smb1.server.lockread;
+}
+
+bool smb1cli_conn_server_writeunlock(struct smbXcli_conn *conn)
+{
+ return conn->smb1.server.writeunlock;
+}
+
+int smb1cli_conn_server_time_zone(struct smbXcli_conn *conn)
+{
+ return conn->smb1.server.time_zone;
+}
+
+bool smb1cli_conn_activate_signing(struct smbXcli_conn *conn,
+ const DATA_BLOB user_session_key,
+ const DATA_BLOB response)
+{
+ return smb_signing_activate(conn->smb1.signing,
+ user_session_key,
+ response);
+}
+
+bool smb1cli_conn_check_signing(struct smbXcli_conn *conn,
+ const uint8_t *buf, uint32_t seqnum)
+{
+ return smb_signing_check_pdu(conn->smb1.signing, buf, seqnum);
+}
+
+bool smb1cli_conn_signing_is_active(struct smbXcli_conn *conn)
+{
+ return smb_signing_is_active(conn->smb1.signing);
+}
+
+void smb1cli_conn_set_encryption(struct smbXcli_conn *conn,
+ struct smb_trans_enc_state **es)
+{
+ /* Replace the old state, if any. */
+<<<<<<< HEAD
+ if (conn->smb1.trans_enc) {
+ TALLOC_FREE(conn->smb1.trans_enc);
+ }
+ conn->smb1.trans_enc = es;
+=======
+ TALLOC_FREE(conn->smb1.trans_enc);
+ conn->smb1.trans_enc = talloc_move(conn, es);
+>>>>>>> 7efc635... s3-libsmb: Convert struct smb_trans_enc_state to talloc
+}
+
+bool smb1cli_conn_encryption_on(struct smbXcli_conn *conn)
+{
+ return common_encryption_on(conn->smb1.trans_enc);
+}
+
+
+static NTSTATUS smb1cli_pull_raw_error(const uint8_t *hdr)
+{
+ uint32_t flags2 = SVAL(hdr, HDR_FLG2);
+ NTSTATUS status = NT_STATUS(IVAL(hdr, HDR_RCLS));
+
+ if (NT_STATUS_IS_OK(status)) {
+ return NT_STATUS_OK;
+ }
+
+ if (flags2 & FLAGS2_32_BIT_ERROR_CODES) {
+ return status;
+ }
+
+ return NT_STATUS_DOS(CVAL(hdr, HDR_RCLS), SVAL(hdr, HDR_ERR));
+}
+
+/**
+ * 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"?
+ */
+bool smb1cli_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;
+}
+
+static uint16_t smb1cli_alloc_mid(struct smbXcli_conn *conn)
{
- int num_pending = talloc_array_length(cli->conn.pending);
+ size_t num_pending = talloc_array_length(conn->pending);
uint16_t result;
while (true) {
- int i;
+ size_t i;
- result = cli->conn.smb1.mid++;
+ result = conn->smb1.mid++;
if ((result == 0) || (result == 0xffff)) {
continue;
}
for (i=0; i<num_pending; i++) {
- if (result == cli_smb_req_mid(cli->conn.pending[i])) {
+ if (result == smb1cli_req_mid(conn->pending[i])) {
break;
}
}
}
}
-void cli_smb_req_unset_pending(struct tevent_req *req)
+void smbXcli_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->conn.pending);
- int i;
-
- if (state->mid != 0) {
+ struct smbXcli_req_state *state =
+ tevent_req_data(req,
+ struct smbXcli_req_state);
+ struct smbXcli_conn *conn = state->conn;
+ size_t num_pending = talloc_array_length(conn->pending);
+ size_t i;
+
+ if (state->smb1.mid != 0) {
/*
* This is a [nt]trans[2] request which waits
* for more than one reply.
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
+ * conn->pending. So if nothing is pending anymore, we need to
* delete the socket read fde.
*/
- TALLOC_FREE(cli->conn.pending);
- cli->conn.read_smb_req = NULL;
+ TALLOC_FREE(conn->pending);
+ conn->read_smb_req = NULL;
return;
}
for (i=0; i<num_pending; i++) {
- if (req == cli->conn.pending[i]) {
+ if (req == 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->conn.pending.
+ * remove ourselves from conn->pending.
*/
return;
}
/*
- * Remove ourselves from the cli->conn.pending array
+ * Remove ourselves from the conn->pending array
*/
for (; i < (num_pending - 1); i++) {
- cli->conn.pending[i] = cli->conn.pending[i+1];
+ conn->pending[i] = conn->pending[i+1];
}
/*
* No NULL check here, we're shrinking by sizeof(void *), and
* talloc_realloc just adjusts the size for this.
*/
- cli->conn.pending = talloc_realloc(NULL, cli->conn.pending,
- struct tevent_req *,
- num_pending - 1);
+ conn->pending = talloc_realloc(conn, conn->pending, struct tevent_req *,
+ num_pending - 1);
return;
}
-static int cli_smb_req_destructor(struct tevent_req *req)
+static int smbXcli_req_destructor(struct tevent_req *req)
{
- struct cli_smb_state *state = tevent_req_data(
- req, struct cli_smb_state);
+ struct smbXcli_req_state *state =
+ tevent_req_data(req,
+ struct smbXcli_req_state);
+
/*
* Make sure we really remove it from
* the pending array on destruction.
*/
- state->mid = 0;
- cli_smb_req_unset_pending(req);
+ state->smb1.mid = 0;
+ smbXcli_req_unset_pending(req);
return 0;
}
-static bool cli_state_receive_next(struct cli_state *cli);
-static void cli_state_notify_pending(struct cli_state *cli, NTSTATUS status);
+static bool smb1cli_req_cancel(struct tevent_req *req);
+static bool smb2cli_req_cancel(struct tevent_req *req);
-bool cli_smb_req_set_pending(struct tevent_req *req)
+static bool smbXcli_req_cancel(struct tevent_req *req)
{
- 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 smbXcli_req_state *state =
+ tevent_req_data(req,
+ struct smbXcli_req_state);
- cli = state->cli;
- num_pending = talloc_array_length(cli->conn.pending);
+ if (!smbXcli_conn_is_connected(state->conn)) {
+ return false;
+ }
- pending = talloc_realloc(cli, cli->conn.pending, struct tevent_req *,
- num_pending+1);
- if (pending == NULL) {
+ if (state->conn->protocol == PROTOCOL_NONE) {
return false;
}
- pending[num_pending] = req;
- cli->conn.pending = pending;
- talloc_set_destructor(req, cli_smb_req_destructor);
- if (!cli_state_receive_next(cli)) {
- /*
+ if (state->conn->protocol >= PROTOCOL_SMB2_02) {
+ return smb2cli_req_cancel(req);
+ }
+
+ return smb1cli_req_cancel(req);
+}
+
+static bool smbXcli_conn_receive_next(struct smbXcli_conn *conn);
+
+bool smbXcli_req_set_pending(struct tevent_req *req)
+{
+ struct smbXcli_req_state *state =
+ tevent_req_data(req,
+ struct smbXcli_req_state);
+ struct smbXcli_conn *conn;
+ struct tevent_req **pending;
+ size_t num_pending;
+
+ conn = state->conn;
+
+ if (!smbXcli_conn_is_connected(conn)) {
+ return false;
+ }
+
+ num_pending = talloc_array_length(conn->pending);
+
+ pending = talloc_realloc(conn, conn->pending, struct tevent_req *,
+ num_pending+1);
+ if (pending == NULL) {
+ return false;
+ }
+ pending[num_pending] = req;
+ conn->pending = pending;
+ talloc_set_destructor(req, smbXcli_req_destructor);
+ tevent_req_set_cancel_fn(req, smbXcli_req_cancel);
+
+ if (!smbXcli_conn_receive_next(conn)) {
+ /*
* the caller should notify the current request
*
* And all other pending requests get notified
- * by cli_state_notify_pending().
+ * by smbXcli_conn_disconnect().
*/
- cli_smb_req_unset_pending(req);
- cli_state_notify_pending(cli, NT_STATUS_NO_MEMORY);
+ smbXcli_req_unset_pending(req);
+ smbXcli_conn_disconnect(conn, 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 void smbXcli_conn_received(struct tevent_req *subreq);
-static bool cli_state_receive_next(struct cli_state *cli)
+static bool smbXcli_conn_receive_next(struct smbXcli_conn *conn)
{
- size_t num_pending = talloc_array_length(cli->conn.pending);
+ size_t num_pending = talloc_array_length(conn->pending);
struct tevent_req *req;
- struct cli_smb_state *state;
+ struct smbXcli_req_state *state;
- if (cli->conn.read_smb_req != NULL) {
+ if (conn->read_smb_req != NULL) {
return true;
}
if (num_pending == 0) {
+ if (conn->smb2.mid < UINT64_MAX) {
+ /* no more pending requests, so we are done for now */
+ return true;
+ }
+
+ /*
+ * If there are no more SMB2 requests possible,
+ * because we are out of message ids,
+ * we need to disconnect.
+ */
+ smbXcli_conn_disconnect(conn, NT_STATUS_CONNECTION_ABORTED);
return true;
}
- req = cli->conn.pending[0];
- state = tevent_req_data(req, struct cli_smb_state);
-
- cli->conn.dispatch_incoming = cli_state_dispatch_smb1;
+ req = conn->pending[0];
+ state = tevent_req_data(req, struct smbXcli_req_state);
/*
* We're the first ones, add the read_smb request that waits for the
* answer from the server
*/
- cli->conn.read_smb_req = read_smb_send(cli->conn.pending, state->ev,
- cli->conn.fd);
- if (cli->conn.read_smb_req == NULL) {
+ conn->read_smb_req = read_smb_send(conn->pending,
+ state->ev,
+ conn->read_fd);
+ if (conn->read_smb_req == NULL) {
return false;
}
- tevent_req_set_callback(cli->conn.read_smb_req, cli_smb_received, cli);
+ tevent_req_set_callback(conn->read_smb_req, smbXcli_conn_received, conn);
return true;
}
-static void cli_state_notify_pending(struct cli_state *cli, NTSTATUS status)
+void smbXcli_conn_disconnect(struct smbXcli_conn *conn, NTSTATUS status)
{
- cli_state_disconnect(cli);
+ tevent_queue_stop(conn->outgoing);
+
+ if (conn->read_fd != -1) {
+ close(conn->read_fd);
+ }
+ if (conn->write_fd != -1) {
+ close(conn->write_fd);
+ }
+ conn->read_fd = -1;
+ conn->write_fd = -1;
/*
* Cancel all pending requests. We do not do a for-loop walking
- * cli->conn.pending because that array changes in
- * cli_smb_req_destructor().
+ * conn->pending because that array changes in
+ * smbXcli_req_unset_pending.
*/
- while (talloc_array_length(cli->conn.pending) > 0) {
+ while (talloc_array_length(conn->pending) > 0) {
struct tevent_req *req;
- struct cli_smb_state *state;
+ struct smbXcli_req_state *state;
+ struct tevent_req **chain;
+ size_t num_chained;
+ size_t i;
- req = cli->conn.pending[0];
- state = tevent_req_data(req, struct cli_smb_state);
+ req = conn->pending[0];
+ state = tevent_req_data(req, struct smbXcli_req_state);
- /*
- * We're dead. No point waiting for trans2
- * replies.
- */
- state->mid = 0;
+ if (state->smb1.chained_requests == NULL) {
+ /*
+ * We're dead. No point waiting for trans2
+ * replies.
+ */
+ state->smb1.mid = 0;
- cli_smb_req_unset_pending(req);
+ smbXcli_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);
+ if (NT_STATUS_IS_OK(status)) {
+ /* do not notify the callers */
+ continue;
+ }
+
+ /*
+ * 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);
+ continue;
+ }
+
+ chain = talloc_move(conn, &state->smb1.chained_requests);
+ num_chained = talloc_array_length(chain);
+
+ for (i=0; i<num_chained; i++) {
+ req = chain[i];
+ state = tevent_req_data(req, struct smbXcli_req_state);
+
+ /*
+ * We're dead. No point waiting for trans2
+ * replies.
+ */
+ state->smb1.mid = 0;
+
+ smbXcli_req_unset_pending(req);
+
+ if (NT_STATUS_IS_OK(status)) {
+ /* do not notify the callers */
+ continue;
+ }
+
+ /*
+ * we need to defer the callback, because we may notify
+ * more than one caller.
+ */
+ tevent_req_defer_callback(req, state->ev);
+ tevent_req_nterror(req, status);
+ }
+ TALLOC_FREE(chain);
}
}
/*
* Fetch a smb request's mid. Only valid after the request has been sent by
- * cli_smb_req_send().
+ * smb1cli_req_send().
*/
-uint16_t cli_smb_req_mid(struct tevent_req *req)
+uint16_t smb1cli_req_mid(struct tevent_req *req)
{
- struct cli_smb_state *state = tevent_req_data(
- req, struct cli_smb_state);
+ struct smbXcli_req_state *state =
+ tevent_req_data(req,
+ struct smbXcli_req_state);
- if (state->mid != 0) {
- return state->mid;
+ if (state->smb1.mid != 0) {
+ return state->smb1.mid;
}
- return SVAL(state->header, smb_mid);
+ return SVAL(state->smb1.hdr, HDR_MID);
}
-void cli_smb_req_set_mid(struct tevent_req *req, uint16_t mid)
+void smb1cli_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;
+ struct smbXcli_req_state *state =
+ tevent_req_data(req,
+ struct smbXcli_req_state);
+
+ state->smb1.mid = mid;
}
-uint32_t cli_smb_req_seqnum(struct tevent_req *req)
+uint32_t smb1cli_req_seqnum(struct tevent_req *req)
{
- struct cli_smb_state *state = tevent_req_data(
- req, struct cli_smb_state);
- return state->seqnum;
+ struct smbXcli_req_state *state =
+ tevent_req_data(req,
+ struct smbXcli_req_state);
+
+ return state->smb1.seqnum;
}
-void cli_smb_req_set_seqnum(struct tevent_req *req, uint32_t seqnum)
+void smb1cli_req_set_seqnum(struct tevent_req *req, uint32_t seqnum)
{
- struct cli_smb_state *state = tevent_req_data(
- req, struct cli_smb_state);
- state->seqnum = seqnum;
+ struct smbXcli_req_state *state =
+ tevent_req_data(req,
+ struct smbXcli_req_state);
+
+ state->smb1.seqnum = seqnum;
}
-static size_t iov_len(const struct iovec *iov, int count)
+static size_t smbXcli_iov_len(const struct iovec *iov, int count)
{
size_t result = 0;
int i;
return result;
}
-static uint8_t *iov_concat(TALLOC_CTX *mem_ctx, const struct iovec *iov,
- int count)
+static uint8_t *smbXcli_iov_concat(TALLOC_CTX *mem_ctx,
+ const struct iovec *iov,
+ int count)
{
- size_t len = iov_len(iov, count);
+ size_t len = smbXcli_iov_len(iov, count);
size_t copied;
uint8_t *buf;
int i;
return buf;
}
-struct tevent_req *cli_smb_req_create(TALLOC_CTX *mem_ctx,
+static void smb1cli_req_flags(enum protocol_types protocol,
+ uint32_t smb1_capabilities,
+ uint8_t smb_command,
+ uint8_t additional_flags,
+ uint8_t clear_flags,
+ uint8_t *_flags,
+ uint16_t additional_flags2,
+ uint16_t clear_flags2,
+ uint16_t *_flags2)
+{
+ uint8_t flags = 0;
+ uint16_t flags2 = 0;
+
+ if (protocol >= PROTOCOL_LANMAN1) {
+ flags |= FLAG_CASELESS_PATHNAMES;
+ flags |= FLAG_CANONICAL_PATHNAMES;
+ }
+
+ if (protocol >= PROTOCOL_LANMAN2) {
+ flags2 |= FLAGS2_LONG_PATH_COMPONENTS;
+ flags2 |= FLAGS2_EXTENDED_ATTRIBUTES;
+ }
+
+ if (protocol >= PROTOCOL_NT1) {
+ flags2 |= FLAGS2_IS_LONG_NAME;
+
+ if (smb1_capabilities & CAP_UNICODE) {
+ flags2 |= FLAGS2_UNICODE_STRINGS;
+ }
+ if (smb1_capabilities & CAP_STATUS32) {
+ flags2 |= FLAGS2_32_BIT_ERROR_CODES;
+ }
+ if (smb1_capabilities & CAP_EXTENDED_SECURITY) {
+ flags2 |= FLAGS2_EXTENDED_SECURITY;
+ }
+ }
+
+ flags |= additional_flags;
+ flags &= ~clear_flags;
+ flags2 |= additional_flags2;
+ flags2 &= ~clear_flags2;
+
+ *_flags = flags;
+ *_flags2 = flags2;
+}
+
+static void smb1cli_req_cancel_done(struct tevent_req *subreq);
+
+static bool smb1cli_req_cancel(struct tevent_req *req)
+{
+ struct smbXcli_req_state *state =
+ tevent_req_data(req,
+ struct smbXcli_req_state);
+ uint8_t flags;
+ uint16_t flags2;
+ uint32_t pid;
+ uint16_t tid;
+ uint16_t uid;
+ uint16_t mid;
+ struct tevent_req *subreq;
+ NTSTATUS status;
+
+ flags = CVAL(state->smb1.hdr, HDR_FLG);
+ flags2 = SVAL(state->smb1.hdr, HDR_FLG2);
+ pid = SVAL(state->smb1.hdr, HDR_PID);
+ pid |= SVAL(state->smb1.hdr, HDR_PIDHIGH)<<16;
+ tid = SVAL(state->smb1.hdr, HDR_TID);
+ uid = SVAL(state->smb1.hdr, HDR_UID);
+ mid = SVAL(state->smb1.hdr, HDR_MID);
+
+ subreq = smb1cli_req_create(state, state->ev,
+ state->conn,
+ SMBntcancel,
+ flags, 0,
+ flags2, 0,
+ 0, /* timeout */
+ pid, tid, uid,
+ 0, NULL, /* vwv */
+ 0, NULL); /* bytes */
+ if (subreq == NULL) {
+ return false;
+ }
+ smb1cli_req_set_mid(subreq, mid);
+
+ status = smb1cli_req_chain_submit(&subreq, 1);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(subreq);
+ return false;
+ }
+ smb1cli_req_set_mid(subreq, 0);
+
+ tevent_req_set_callback(subreq, smb1cli_req_cancel_done, NULL);
+
+ return true;
+}
+
+static void smb1cli_req_cancel_done(struct tevent_req *subreq)
+{
+ /* we do not care about the result */
+ TALLOC_FREE(subreq);
+}
+
+struct tevent_req *smb1cli_req_create(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
- struct cli_state *cli,
+ struct smbXcli_conn *conn,
uint8_t smb_command,
uint8_t additional_flags,
+ uint8_t clear_flags,
+ uint16_t additional_flags2,
+ uint16_t clear_flags2,
+ uint32_t timeout_msec,
+ uint32_t pid,
+ uint16_t tid,
+ uint16_t uid,
uint8_t wct, uint16_t *vwv,
int iov_count,
struct iovec *bytes_iov)
{
- struct tevent_req *result;
- struct cli_smb_state *state;
- struct timeval endtime;
+ struct tevent_req *req;
+ struct smbXcli_req_state *state;
+ uint8_t flags = 0;
+ uint16_t flags2 = 0;
if (iov_count > MAX_SMB_IOV) {
/*
return NULL;
}
- result = tevent_req_create(mem_ctx, &state, struct cli_smb_state);
- if (result == NULL) {
+ req = tevent_req_create(mem_ctx, &state,
+ struct smbXcli_req_state);
+ if (req == NULL) {
return NULL;
}
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->smb1.tid);
- SCVAL(state->header, smb_wct, wct);
+ state->conn = conn;
- state->vwv = vwv;
-
- SSVAL(state->bytecount_buf, 0, iov_len(bytes_iov, iov_count));
+ state->smb1.recv_cmd = 0xFF;
+ state->smb1.recv_status = NT_STATUS_INTERNAL_ERROR;
+ state->smb1.recv_iov = talloc_zero_array(state, struct iovec, 3);
+ if (state->smb1.recv_iov == NULL) {
+ TALLOC_FREE(req);
+ return NULL;
+ }
- state->iov[0].iov_base = (void *)state->header;
- state->iov[0].iov_len = sizeof(state->header);
- state->iov[1].iov_base = (void *)state->vwv;
- state->iov[1].iov_len = wct * sizeof(uint16_t);
- state->iov[2].iov_base = (void *)state->bytecount_buf;
- state->iov[2].iov_len = sizeof(uint16_t);
+ smb1cli_req_flags(conn->protocol,
+ conn->smb1.capabilities,
+ smb_command,
+ additional_flags,
+ clear_flags,
+ &flags,
+ additional_flags2,
+ clear_flags2,
+ &flags2);
+
+ SIVAL(state->smb1.hdr, 0, SMB_MAGIC);
+ SCVAL(state->smb1.hdr, HDR_COM, smb_command);
+ SIVAL(state->smb1.hdr, HDR_RCLS, NT_STATUS_V(NT_STATUS_OK));
+ SCVAL(state->smb1.hdr, HDR_FLG, flags);
+ SSVAL(state->smb1.hdr, HDR_FLG2, flags2);
+ SSVAL(state->smb1.hdr, HDR_PIDHIGH, pid >> 16);
+ SSVAL(state->smb1.hdr, HDR_TID, tid);
+ SSVAL(state->smb1.hdr, HDR_PID, pid);
+ SSVAL(state->smb1.hdr, HDR_UID, uid);
+ SSVAL(state->smb1.hdr, HDR_MID, 0); /* this comes later */
+ SCVAL(state->smb1.hdr, HDR_WCT, wct);
+
+ state->smb1.vwv = vwv;
+
+ SSVAL(state->smb1.bytecount_buf, 0, smbXcli_iov_len(bytes_iov, iov_count));
+
+ state->smb1.iov[0].iov_base = (void *)state->length_hdr;
+ state->smb1.iov[0].iov_len = sizeof(state->length_hdr);
+ state->smb1.iov[1].iov_base = (void *)state->smb1.hdr;
+ state->smb1.iov[1].iov_len = sizeof(state->smb1.hdr);
+ state->smb1.iov[2].iov_base = (void *)state->smb1.vwv;
+ state->smb1.iov[2].iov_len = wct * sizeof(uint16_t);
+ state->smb1.iov[3].iov_base = (void *)state->smb1.bytecount_buf;
+ state->smb1.iov[3].iov_len = sizeof(uint16_t);
if (iov_count != 0) {
- memcpy(&state->iov[3], bytes_iov,
+ memcpy(&state->smb1.iov[4], bytes_iov,
iov_count * sizeof(*bytes_iov));
}
- state->iov_count = iov_count + 3;
+ state->smb1.iov_count = iov_count + 4;
- if (cli->timeout) {
- endtime = timeval_current_ofs_msec(cli->timeout);
- if (!tevent_req_set_endtime(result, ev, endtime)) {
- return result;
+ if (timeout_msec > 0) {
+ struct timeval endtime;
+
+ endtime = timeval_current_ofs_msec(timeout_msec);
+ if (!tevent_req_set_endtime(req, ev, endtime)) {
+ return req;
}
}
case SMBtranss:
case SMBtranss2:
case SMBnttranss:
+ state->one_way = true;
+ break;
case SMBntcancel:
state->one_way = true;
+ state->smb1.one_way_seqnum = true;
break;
case SMBlockingX:
if ((wct == 8) &&
break;
}
- return result;
+ return req;
}
-static NTSTATUS cli_signv(struct cli_state *cli, struct iovec *iov, int count,
- uint32_t *seqnum)
+static NTSTATUS smb1cli_conn_signv(struct smbXcli_conn *conn,
+ struct iovec *iov, int iov_count,
+ uint32_t *seqnum,
+ bool one_way_seqnum)
{
+ TALLOC_CTX *frame = NULL;
uint8_t *buf;
/*
* iovec directly. MD5Update would do that just fine.
*/
- if ((count <= 0) || (iov[0].iov_len < smb_wct)) {
- return NT_STATUS_INVALID_PARAMETER;
+ if (iov_count < 4) {
+ return NT_STATUS_INVALID_PARAMETER_MIX;
+ }
+ if (iov[0].iov_len != NBT_HDR_SIZE) {
+ return NT_STATUS_INVALID_PARAMETER_MIX;
}
+ if (iov[1].iov_len != (MIN_SMB_SIZE-sizeof(uint16_t))) {
+ return NT_STATUS_INVALID_PARAMETER_MIX;
+ }
+ if (iov[2].iov_len > (0xFF * sizeof(uint16_t))) {
+ return NT_STATUS_INVALID_PARAMETER_MIX;
+ }
+ if (iov[3].iov_len != sizeof(uint16_t)) {
+ return NT_STATUS_INVALID_PARAMETER_MIX;
+ }
+
+ frame = talloc_stackframe();
- buf = iov_concat(talloc_tos(), iov, count);
+ buf = smbXcli_iov_concat(frame, iov, iov_count);
if (buf == NULL) {
return NT_STATUS_NO_MEMORY;
}
- cli_calculate_sign_mac(cli, (char *)buf, seqnum);
- memcpy(iov[0].iov_base, buf, iov[0].iov_len);
+ *seqnum = smb_signing_next_seqnum(conn->smb1.signing,
+ one_way_seqnum);
+ smb_signing_sign_pdu(conn->smb1.signing, buf, *seqnum);
+ memcpy(iov[1].iov_base, buf+4, iov[1].iov_len);
- TALLOC_FREE(buf);
+ TALLOC_FREE(frame);
return NT_STATUS_OK;
}
-static void cli_smb_sent(struct tevent_req *subreq);
+static void smb1cli_req_writev_done(struct tevent_req *subreq);
+static NTSTATUS smb1cli_conn_dispatch_incoming(struct smbXcli_conn *conn,
+ TALLOC_CTX *tmp_mem,
+ uint8_t *inbuf);
-static NTSTATUS cli_smb_req_iov_send(struct tevent_req *req,
- struct cli_smb_state *state,
- struct iovec *iov, int iov_count)
+static NTSTATUS smb1cli_req_writev_submit(struct tevent_req *req,
+ struct smbXcli_req_state *state,
+ struct iovec *iov, int iov_count)
{
struct tevent_req *subreq;
NTSTATUS status;
+ uint8_t cmd;
+ uint16_t mid;
- if (!cli_state_is_connected(state->cli)) {
+ if (!smbXcli_conn_is_connected(state->conn)) {
return NT_STATUS_CONNECTION_DISCONNECTED;
}
- if (iov[0].iov_len < smb_wct) {
- return NT_STATUS_INVALID_PARAMETER;
+ if (state->conn->protocol > PROTOCOL_NT1) {
+ return NT_STATUS_REVISION_MISMATCH;
+ }
+
+ if (iov_count < 4) {
+ return NT_STATUS_INVALID_PARAMETER_MIX;
+ }
+ if (iov[0].iov_len != NBT_HDR_SIZE) {
+ return NT_STATUS_INVALID_PARAMETER_MIX;
+ }
+ if (iov[1].iov_len != (MIN_SMB_SIZE-sizeof(uint16_t))) {
+ return NT_STATUS_INVALID_PARAMETER_MIX;
+ }
+ if (iov[2].iov_len > (0xFF * sizeof(uint16_t))) {
+ return NT_STATUS_INVALID_PARAMETER_MIX;
+ }
+ if (iov[3].iov_len != sizeof(uint16_t)) {
+ return NT_STATUS_INVALID_PARAMETER_MIX;
}
- if (state->mid != 0) {
- SSVAL(iov[0].iov_base, smb_mid, state->mid);
+ cmd = CVAL(iov[1].iov_base, HDR_COM);
+ if (cmd == SMBreadBraw) {
+ if (smbXcli_conn_has_async_calls(state->conn)) {
+ return NT_STATUS_INVALID_PARAMETER_MIX;
+ }
+ state->conn->smb1.read_braw_req = req;
+ }
+
+ if (state->smb1.mid != 0) {
+ mid = state->smb1.mid;
} else {
- uint16_t mid = cli_alloc_mid(state->cli);
- SSVAL(iov[0].iov_base, smb_mid, mid);
+ mid = smb1cli_alloc_mid(state->conn);
}
+ SSVAL(iov[1].iov_base, HDR_MID, mid);
- smb_setlen_nbt((char *)iov[0].iov_base, iov_len(iov, iov_count) - 4);
+ _smb_setlen_nbt(iov[0].iov_base, smbXcli_iov_len(&iov[1], iov_count-1));
- status = cli_signv(state->cli, iov, iov_count, &state->seqnum);
+ status = smb1cli_conn_signv(state->conn, iov, iov_count,
+ &state->smb1.seqnum,
+ state->smb1.one_way_seqnum);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
- if (cli_state_encryption_on(state->cli)) {
+ /*
+ * If we supported multiple encrytion contexts
+ * here we'd look up based on tid.
+ */
+ if (common_encryption_on(state->conn->smb1.trans_enc)) {
char *buf, *enc_buf;
- buf = (char *)iov_concat(talloc_tos(), iov, iov_count);
+ buf = (char *)smbXcli_iov_concat(talloc_tos(), iov, iov_count);
if (buf == NULL) {
return NT_STATUS_NO_MEMORY;
}
- status = common_encrypt_buffer(state->cli->trans_enc_state,
+ status = common_encrypt_buffer(state->conn->smb1.trans_enc,
(char *)buf, &enc_buf);
TALLOC_FREE(buf);
if (!NT_STATUS_IS_OK(status)) {
iov[0].iov_len = talloc_get_size(buf);
iov_count = 1;
}
- 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;
+
+ if (state->conn->dispatch_incoming == NULL) {
+ state->conn->dispatch_incoming = smb1cli_conn_dispatch_incoming;
}
- tevent_req_set_callback(subreq, cli_smb_sent, req);
- return NT_STATUS_OK;
-}
-NTSTATUS cli_smb_req_send(struct tevent_req *req)
-{
- struct cli_smb_state *state = tevent_req_data(
- req, struct cli_smb_state);
+ tevent_req_set_cancel_fn(req, smbXcli_req_cancel);
- if (!tevent_req_is_in_progress(req)) {
- return NT_STATUS_INTERNAL_ERROR;
+ subreq = writev_send(state, state->ev, state->conn->outgoing,
+ state->conn->write_fd, false, iov, iov_count);
+ if (subreq == NULL) {
+ return NT_STATUS_NO_MEMORY;
}
-
- return cli_smb_req_iov_send(req, state, state->iov, state->iov_count);
+ tevent_req_set_callback(subreq, smb1cli_req_writev_done, req);
+ return NT_STATUS_OK;
}
-struct tevent_req *cli_smb_send(TALLOC_CTX *mem_ctx,
- struct tevent_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 *smb1cli_req_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct smbXcli_conn *conn,
+ uint8_t smb_command,
+ uint8_t additional_flags,
+ uint8_t clear_flags,
+ uint16_t additional_flags2,
+ uint16_t clear_flags2,
+ uint32_t timeout_msec,
+ uint32_t pid,
+ uint16_t tid,
+ uint16_t uid,
+ uint8_t wct, uint16_t *vwv,
+ uint32_t num_bytes,
+ const uint8_t *bytes)
{
struct tevent_req *req;
struct iovec iov;
iov.iov_base = discard_const_p(void, bytes);
iov.iov_len = num_bytes;
- req = cli_smb_req_create(mem_ctx, ev, cli, smb_command,
- additional_flags, wct, vwv, 1, &iov);
+ req = smb1cli_req_create(mem_ctx, ev, conn, smb_command,
+ additional_flags, clear_flags,
+ additional_flags2, clear_flags2,
+ timeout_msec,
+ pid, tid, uid,
+ wct, vwv, 1, &iov);
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);
+ status = smb1cli_req_chain_submit(&req, 1);
+ if (tevent_req_nterror(req, status)) {
return tevent_req_post(req, ev);
}
return req;
}
-static void cli_smb_sent(struct tevent_req *subreq)
+static void smb1cli_req_writev_done(struct tevent_req *subreq)
{
- 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);
+ struct tevent_req *req =
+ tevent_req_callback_data(subreq,
+ struct tevent_req);
+ struct smbXcli_req_state *state =
+ tevent_req_data(req,
+ struct smbXcli_req_state);
ssize_t nwritten;
int err;
TALLOC_FREE(subreq);
if (nwritten == -1) {
NTSTATUS status = map_nt_error_from_unix_common(err);
- cli_state_notify_pending(state->cli, status);
+ smbXcli_conn_disconnect(state->conn, status);
return;
}
return;
}
- if (!cli_smb_req_set_pending(req)) {
+ if (!smbXcli_req_set_pending(req)) {
tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
}
-static void cli_smb_received(struct tevent_req *subreq)
+static void smbXcli_conn_received(struct tevent_req *subreq)
{
- struct cli_state *cli = tevent_req_callback_data(
- subreq, struct cli_state);
+ struct smbXcli_conn *conn =
+ tevent_req_callback_data(subreq,
+ struct smbXcli_conn);
TALLOC_CTX *frame = talloc_stackframe();
NTSTATUS status;
uint8_t *inbuf;
ssize_t received;
int err;
- if (subreq != cli->conn.read_smb_req) {
+ if (subreq != 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);
+ smbXcli_conn_disconnect(conn, status);
TALLOC_FREE(frame);
return;
}
+ conn->read_smb_req = NULL;
received = read_smb_recv(subreq, frame, &inbuf, &err);
TALLOC_FREE(subreq);
- cli->conn.read_smb_req = NULL;
if (received == -1) {
status = map_nt_error_from_unix_common(err);
- cli_state_notify_pending(cli, status);
+ smbXcli_conn_disconnect(conn, status);
TALLOC_FREE(frame);
return;
}
- status = cli->conn.dispatch_incoming(cli, frame, inbuf);
+ status = conn->dispatch_incoming(conn, frame, inbuf);
TALLOC_FREE(frame);
if (NT_STATUS_IS_OK(status)) {
/*
/*
* We got an error, so notify all pending requests
*/
- cli_state_notify_pending(cli, status);
+ smbXcli_conn_disconnect(conn, 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);
+ if (!smbXcli_conn_receive_next(conn)) {
+ smbXcli_conn_disconnect(conn, NT_STATUS_NO_MEMORY);
+ }
+}
+
+static NTSTATUS smb1cli_inbuf_parse_chain(uint8_t *buf, TALLOC_CTX *mem_ctx,
+ struct iovec **piov, int *pnum_iov)
+{
+ struct iovec *iov;
+ int num_iov;
+ size_t buflen;
+ size_t taken;
+ size_t remaining;
+ uint8_t *hdr;
+ uint8_t cmd;
+ uint32_t wct_ofs;
+
+ buflen = smb_len_nbt(buf);
+ taken = 0;
+
+ hdr = buf + NBT_HDR_SIZE;
+
+ if (buflen < MIN_SMB_SIZE) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
+
+ /*
+ * This returns iovec elements in the following order:
+ *
+ * - SMB header
+ *
+ * - Parameter Block
+ * - Data Block
+ *
+ * - Parameter Block
+ * - Data Block
+ *
+ * - Parameter Block
+ * - Data Block
+ */
+ num_iov = 1;
+
+ iov = talloc_array(mem_ctx, struct iovec, num_iov);
+ if (iov == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ iov[0].iov_base = hdr;
+ iov[0].iov_len = HDR_WCT;
+ taken += HDR_WCT;
+
+ cmd = CVAL(hdr, HDR_COM);
+ wct_ofs = HDR_WCT;
+
+ while (true) {
+ size_t len = buflen - taken;
+ struct iovec *cur;
+ struct iovec *iov_tmp;
+ uint8_t wct;
+ uint32_t bcc_ofs;
+ uint16_t bcc;
+ size_t needed;
+
+ /*
+ * we need at least WCT and BCC
+ */
+ needed = sizeof(uint8_t) + sizeof(uint16_t);
+ if (len < needed) {
+ DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
+ __location__, (int)len, (int)needed));
+ goto inval;
+ }
+
+ /*
+ * Now we check if the specified words are there
+ */
+ wct = CVAL(hdr, wct_ofs);
+ needed += wct * sizeof(uint16_t);
+ if (len < needed) {
+ DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
+ __location__, (int)len, (int)needed));
+ goto inval;
+ }
+
+ /*
+ * Now we check if the specified bytes are there
+ */
+ bcc_ofs = wct_ofs + sizeof(uint8_t) + wct * sizeof(uint16_t);
+ bcc = SVAL(hdr, bcc_ofs);
+ needed += bcc * sizeof(uint8_t);
+ if (len < needed) {
+ DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
+ __location__, (int)len, (int)needed));
+ goto inval;
+ }
+
+ /*
+ * we allocate 2 iovec structures for words and bytes
+ */
+ iov_tmp = talloc_realloc(mem_ctx, iov, struct iovec,
+ num_iov + 2);
+ if (iov_tmp == NULL) {
+ TALLOC_FREE(iov);
+ return NT_STATUS_NO_MEMORY;
+ }
+ iov = iov_tmp;
+ cur = &iov[num_iov];
+ num_iov += 2;
+
+ cur[0].iov_len = wct * sizeof(uint16_t);
+ cur[0].iov_base = hdr + (wct_ofs + sizeof(uint8_t));
+ cur[1].iov_len = bcc * sizeof(uint8_t);
+ cur[1].iov_base = hdr + (bcc_ofs + sizeof(uint16_t));
+
+ taken += needed;
+
+ if (!smb1cli_is_andx_req(cmd)) {
+ /*
+ * If the current command does not have AndX chanining
+ * we are done.
+ */
+ break;
+ }
+
+ if (wct == 0 && bcc == 0) {
+ /*
+ * An empty response also ends the chain,
+ * most likely with an error.
+ */
+ break;
+ }
+
+ if (wct < 2) {
+ DEBUG(10, ("%s: wct[%d] < 2 for cmd[0x%02X]\n",
+ __location__, (int)wct, (int)cmd));
+ goto inval;
+ }
+ cmd = CVAL(cur[0].iov_base, 0);
+ if (cmd == 0xFF) {
+ /*
+ * If it is the end of the chain we are also done.
+ */
+ break;
+ }
+ wct_ofs = SVAL(cur[0].iov_base, 2);
+
+ if (wct_ofs < taken) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
+ if (wct_ofs > buflen) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
+
+ /*
+ * we consumed everything up to the start of the next
+ * parameter block.
+ */
+ taken = wct_ofs;
+ }
+
+ remaining = buflen - taken;
+
+ if (remaining > 0 && num_iov >= 3) {
+ /*
+ * The last DATA block gets the remaining
+ * bytes, this is needed to support
+ * CAP_LARGE_WRITEX and CAP_LARGE_READX.
+ */
+ iov[num_iov-1].iov_len += remaining;
}
+
+ *piov = iov;
+ *pnum_iov = num_iov;
+ return NT_STATUS_OK;
+
+inval:
+ TALLOC_FREE(iov);
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
}
-static NTSTATUS cli_state_dispatch_smb1(struct cli_state *cli,
- TALLOC_CTX *frame,
- uint8_t *inbuf)
+static NTSTATUS smb1cli_conn_dispatch_incoming(struct smbXcli_conn *conn,
+ TALLOC_CTX *tmp_mem,
+ uint8_t *inbuf)
{
struct tevent_req *req;
- struct cli_smb_state *state;
+ struct smbXcli_req_state *state;
NTSTATUS status;
- int num_pending;
- int i;
+ size_t num_pending;
+ size_t i;
+ uint8_t cmd;
uint16_t mid;
bool oplock_break;
const uint8_t *inhdr = inbuf + NBT_HDR_SIZE;
+ struct iovec *iov = NULL;
+ int num_iov = 0;
+ struct tevent_req **chain = NULL;
+ size_t num_chained = 0;
+ size_t num_responses = 0;
+
+ if (conn->smb1.read_braw_req != NULL) {
+ req = conn->smb1.read_braw_req;
+ conn->smb1.read_braw_req = NULL;
+ state = tevent_req_data(req, struct smbXcli_req_state);
+
+ smbXcli_req_unset_pending(req);
+
+ if (state->smb1.recv_iov == NULL) {
+ /*
+ * For requests with more than
+ * one response, we have to readd the
+ * recv_iov array.
+ */
+ state->smb1.recv_iov = talloc_zero_array(state,
+ struct iovec,
+ 3);
+ if (tevent_req_nomem(state->smb1.recv_iov, req)) {
+ return NT_STATUS_OK;
+ }
+ }
+
+ state->smb1.recv_iov[0].iov_base = (void *)(inbuf + NBT_HDR_SIZE);
+ state->smb1.recv_iov[0].iov_len = smb_len_nbt(inbuf);
+ ZERO_STRUCT(state->smb1.recv_iov[1]);
+ ZERO_STRUCT(state->smb1.recv_iov[2]);
+
+ state->smb1.recv_cmd = SMBreadBraw;
+ state->smb1.recv_status = NT_STATUS_OK;
+ state->inbuf = talloc_move(state->smb1.recv_iov, &inbuf);
+
+ tevent_req_done(req);
+ return NT_STATUS_OK;
+ }
if ((IVAL(inhdr, 0) != SMB_MAGIC) /* 0xFF"SMB" */
&& (SVAL(inhdr, 0) != 0x45ff)) /* 0xFF"E" */ {
return NT_STATUS_INVALID_NETWORK_RESPONSE;
}
- if (cli_state_encryption_on(cli) && (CVAL(inbuf, 0) == 0)) {
+ /*
+ * If we supported multiple encrytion contexts
+ * here we'd look up based on tid.
+ */
+ if (common_encryption_on(conn->smb1.trans_enc)
+ && (CVAL(inbuf, 0) == 0)) {
uint16_t enc_ctx_num;
status = get_enc_ctx_num(inbuf, &enc_ctx_num);
return status;
}
- if (enc_ctx_num != cli->trans_enc_state->enc_ctx_num) {
+ if (enc_ctx_num != conn->smb1.trans_enc->enc_ctx_num) {
DEBUG(10, ("wrong enc_ctx %d, expected %d\n",
enc_ctx_num,
- cli->trans_enc_state->enc_ctx_num));
+ conn->smb1.trans_enc->enc_ctx_num));
return NT_STATUS_INVALID_HANDLE;
}
- status = common_decrypt_buffer(cli->trans_enc_state,
+ status = common_decrypt_buffer(conn->smb1.trans_enc,
(char *)inbuf);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("common_decrypt_buffer returned %s\n",
}
mid = SVAL(inhdr, HDR_MID);
- num_pending = talloc_array_length(cli->conn.pending);
+ num_pending = talloc_array_length(conn->pending);
for (i=0; i<num_pending; i++) {
- if (mid == cli_smb_req_mid(cli->conn.pending[i])) {
+ if (mid == smb1cli_req_mid(conn->pending[i])) {
break;
}
}
}
}
- req = cli->conn.pending[i];
- state = tevent_req_data(req, struct cli_smb_state);
+ req = conn->pending[i];
+ state = tevent_req_data(req, struct smbXcli_req_state);
if (!oplock_break /* oplock breaks are not signed */
- && !cli_check_sign_mac(cli, (char *)inbuf, state->seqnum+1)) {
+ && !smb_signing_check_pdu(conn->smb1.signing,
+ inbuf, state->smb1.seqnum+1)) {
DEBUG(10, ("cli_check_sign_mac failed\n"));
return NT_STATUS_ACCESS_DENIED;
}
- 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);
+ status = smb1cli_inbuf_parse_chain(inbuf, tmp_mem,
+ &iov, &num_iov);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10,("smb1cli_inbuf_parse_chain - %s\n",
+ nt_errstr(status)));
+ return status;
+ }
- for (i=0; i<num_chained; i++) {
- struct tevent_req **ref;
+ cmd = CVAL(inhdr, HDR_COM);
+ status = smb1cli_pull_raw_error(inhdr);
- req = chain[i];
- state = tevent_req_data(req, struct cli_smb_state);
+ if (state->smb1.chained_requests == NULL) {
+ if (num_iov != 3) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
- cli_smb_req_unset_pending(req);
+ smbXcli_req_unset_pending(req);
+ if (state->smb1.recv_iov == NULL) {
/*
- * as we finish multiple requests here
- * we need to defer the callbacks as
- * they could destroy our current stack state.
+ * For requests with more than
+ * one response, we have to readd the
+ * recv_iov array.
*/
- tevent_req_defer_callback(req, state->ev);
-
- ref = talloc_reference(state, chain);
- if (tevent_req_nomem(ref, req)) {
- continue;
+ state->smb1.recv_iov = talloc_zero_array(state,
+ struct iovec,
+ 3);
+ if (tevent_req_nomem(state->smb1.recv_iov, req)) {
+ return NT_STATUS_OK;
}
+ }
- state->inbuf = inbuf;
- state->chain_num = i;
- state->chain_length = num_chained;
+ state->smb1.recv_cmd = cmd;
+ state->smb1.recv_status = status;
+ state->inbuf = talloc_move(state->smb1.recv_iov, &inbuf);
+ state->smb1.recv_iov[0] = iov[0];
+ state->smb1.recv_iov[1] = iov[1];
+ state->smb1.recv_iov[2] = iov[2];
+
+ if (talloc_array_length(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;
}
- cli_smb_req_unset_pending(req);
-
- state->inbuf = talloc_move(state, &inbuf);
- state->chain_num = 0;
- state->chain_length = 1;
+ chain = talloc_move(tmp_mem, &state->smb1.chained_requests);
+ num_chained = talloc_array_length(chain);
+ num_responses = (num_iov - 1)/2;
- if (talloc_array_length(cli->conn.pending) == 0) {
- tevent_req_done(req);
- return NT_STATUS_OK;
+ if (num_responses > num_chained) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
}
- tevent_req_defer_callback(req, state->ev);
- tevent_req_done(req);
- return NT_STATUS_RETRY;
-}
+ for (i=0; i<num_chained; i++) {
+ size_t iov_idx = 1 + (i*2);
+ struct iovec *cur = &iov[iov_idx];
+ uint8_t *inbuf_ref;
-NTSTATUS cli_smb_recv(struct tevent_req *req,
- TALLOC_CTX *mem_ctx, uint8_t **pinbuf,
- 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;
+ req = chain[i];
+ state = tevent_req_data(req, struct smbXcli_req_state);
- if (tevent_req_is_nterror(req, &status)) {
- return status;
- }
+ smbXcli_req_unset_pending(req);
- if (state->inbuf == NULL) {
- if (min_wct != 0) {
- return NT_STATUS_INVALID_NETWORK_RESPONSE;
- }
- if (pinbuf) {
- *pinbuf = NULL;
- }
- if (pwct) {
- *pwct = 0;
- }
- if (pvwv) {
- *pvwv = NULL;
- }
- if (pnum_bytes) {
- *pnum_bytes = 0;
- }
- if (pbytes) {
- *pbytes = NULL;
- }
- /* This was a request without a reply */
- return NT_STATUS_OK;
- }
+ /*
+ * 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);
- wct_ofs = smb_wct;
- cmd = CVAL(state->inbuf, smb_com);
+ if (i >= num_responses) {
+ tevent_req_nterror(req, NT_STATUS_REQUEST_ABORTED);
+ continue;
+ }
- for (i=0; i<state->chain_num; i++) {
- if (i < state->chain_num-1) {
- if (cmd == 0xff) {
- return NT_STATUS_REQUEST_ABORTED;
- }
- if (!is_andx_req(cmd)) {
- return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ if (state->smb1.recv_iov == NULL) {
+ /*
+ * For requests with more than
+ * one response, we have to readd the
+ * recv_iov array.
+ */
+ state->smb1.recv_iov = talloc_zero_array(state,
+ struct iovec,
+ 3);
+ if (tevent_req_nomem(state->smb1.recv_iov, req)) {
+ continue;
}
}
- if (!have_andx_command((char *)state->inbuf, wct_ofs, cmd)) {
+ state->smb1.recv_cmd = cmd;
+
+ if (i == (num_responses - 1)) {
/*
- * This request was not completed because a previous
- * request in the chain had received an error.
+ * The last request in the chain gets the status
*/
- return NT_STATUS_REQUEST_ABORTED;
+ state->smb1.recv_status = status;
+ } else {
+ cmd = CVAL(cur[0].iov_base, 0);
+ state->smb1.recv_status = NT_STATUS_OK;
}
- cmd = CVAL(state->inbuf, wct_ofs + 1);
- wct_ofs = SVAL(state->inbuf, wct_ofs + 3);
+ state->inbuf = inbuf;
/*
- * Skip the all-present length field. No overflow, we've just
- * put a 16-bit value into a size_t.
+ * Note: here we use talloc_reference() in a way
+ * that does not expose it to the caller.
*/
- wct_ofs += 4;
-
- if (wct_ofs+2 > talloc_get_size(state->inbuf)) {
- return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ inbuf_ref = talloc_reference(state->smb1.recv_iov, inbuf);
+ if (tevent_req_nomem(inbuf_ref, req)) {
+ continue;
}
+
+ /* copy the related buffers */
+ state->smb1.recv_iov[0] = iov[0];
+ state->smb1.recv_iov[1] = cur[0];
+ state->smb1.recv_iov[2] = cur[1];
+
+ tevent_req_done(req);
}
- state->cli->raw_status = cli_pull_raw_error(state->inbuf);
- if (NT_STATUS_IS_DOS(state->cli->raw_status) &&
- state->cli->map_dos_errors) {
- 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;
+ return NT_STATUS_RETRY;
+}
+
+NTSTATUS smb1cli_req_recv(struct tevent_req *req,
+ TALLOC_CTX *mem_ctx,
+ struct iovec **piov,
+ uint8_t **phdr,
+ uint8_t *pwct,
+ uint16_t **pvwv,
+ uint32_t *pvwv_offset,
+ uint32_t *pnum_bytes,
+ uint8_t **pbytes,
+ uint32_t *pbytes_offset,
+ uint8_t **pinbuf,
+ const struct smb1cli_req_expected_response *expected,
+ size_t num_expected)
+{
+ struct smbXcli_req_state *state =
+ tevent_req_data(req,
+ struct smbXcli_req_state);
+ NTSTATUS status = NT_STATUS_OK;
+ struct iovec *recv_iov = NULL;
+ uint8_t *hdr = NULL;
+ uint8_t wct = 0;
+ uint32_t vwv_offset = 0;
+ uint16_t *vwv = NULL;
+ uint32_t num_bytes = 0;
+ uint32_t bytes_offset = 0;
+ uint8_t *bytes = NULL;
+ size_t i;
+ bool found_status = false;
+ bool found_size = false;
+
+ if (piov != NULL) {
+ *piov = NULL;
+ }
+ if (phdr != NULL) {
+ *phdr = 0;
+ }
+ if (pwct != NULL) {
+ *pwct = 0;
+ }
+ if (pvwv != NULL) {
+ *pvwv = NULL;
+ }
+ if (pvwv_offset != NULL) {
+ *pvwv_offset = 0;
+ }
+ if (pnum_bytes != NULL) {
+ *pnum_bytes = 0;
+ }
+ if (pbytes != NULL) {
+ *pbytes = NULL;
+ }
+ if (pbytes_offset != NULL) {
+ *pbytes_offset = 0;
+ }
+ if (pinbuf != NULL) {
+ *pinbuf = NULL;
}
- if (!have_andx_command((char *)state->inbuf, wct_ofs, cmd)) {
+ if (state->inbuf != NULL) {
+ recv_iov = state->smb1.recv_iov;
+ state->smb1.recv_iov = NULL;
+ if (state->smb1.recv_cmd != SMBreadBraw) {
+ hdr = (uint8_t *)recv_iov[0].iov_base;
+ wct = recv_iov[1].iov_len/2;
+ vwv = (uint16_t *)recv_iov[1].iov_base;
+ vwv_offset = PTR_DIFF(vwv, hdr);
+ num_bytes = recv_iov[2].iov_len;
+ bytes = (uint8_t *)recv_iov[2].iov_base;
+ bytes_offset = PTR_DIFF(bytes, hdr);
+ }
+ }
- if ((cmd == SMBsesssetupX)
- && NT_STATUS_EQUAL(
- status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- /*
- * NT_STATUS_MORE_PROCESSING_REQUIRED is a
- * valid return code for session setup
- */
- goto no_err;
+ if (tevent_req_is_nterror(req, &status)) {
+ for (i=0; i < num_expected; i++) {
+ if (NT_STATUS_EQUAL(status, expected[i].status)) {
+ found_status = true;
+ break;
+ }
}
- if (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;
+ if (found_status) {
+ return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
}
- } else {
- /*
- * Only the last request in the chain get the returned
- * status.
- */
- status = NT_STATUS_OK;
+
+ return status;
}
-no_err:
+ if (num_expected == 0) {
+ found_status = true;
+ found_size = true;
+ }
- wct = CVAL(state->inbuf, wct_ofs);
- bytes_offset = wct_ofs + 1 + wct * sizeof(uint16_t);
- num_bytes = SVAL(state->inbuf, bytes_offset);
+ status = state->smb1.recv_status;
- if (wct < min_wct) {
- return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ for (i=0; i < num_expected; i++) {
+ if (!NT_STATUS_EQUAL(status, expected[i].status)) {
+ continue;
+ }
+
+ found_status = true;
+ if (expected[i].wct == 0) {
+ found_size = true;
+ break;
+ }
+
+ if (expected[i].wct == wct) {
+ found_size = true;
+ break;
+ }
}
- /*
- * 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(state->inbuf))
- || (bytes_offset > 0xffff)) {
+ if (!found_status) {
+ return status;
+ }
+
+ if (!found_size) {
return NT_STATUS_INVALID_NETWORK_RESPONSE;
}
+ if (piov != NULL) {
+ *piov = talloc_move(mem_ctx, &recv_iov);
+ }
+
+ if (phdr != NULL) {
+ *phdr = hdr;
+ }
if (pwct != NULL) {
*pwct = wct;
}
if (pvwv != NULL) {
- *pvwv = (uint16_t *)(state->inbuf + wct_ofs + 1);
+ *pvwv = vwv;
+ }
+ if (pvwv_offset != NULL) {
+ *pvwv_offset = vwv_offset;
}
if (pnum_bytes != NULL) {
*pnum_bytes = num_bytes;
}
if (pbytes != NULL) {
- *pbytes = (uint8_t *)state->inbuf + bytes_offset + 2;
+ *pbytes = bytes;
}
- if ((mem_ctx != NULL) && (pinbuf != NULL)) {
- if (state->chain_num == state->chain_length-1) {
- *pinbuf = talloc_move(mem_ctx, &state->inbuf);
- } else {
- *pinbuf = state->inbuf;
- }
+ if (pbytes_offset != NULL) {
+ *pbytes_offset = bytes_offset;
+ }
+ if (pinbuf != NULL) {
+ *pinbuf = state->inbuf;
}
return status;
}
-size_t cli_smb_wct_ofs(struct tevent_req **reqs, int num_reqs)
+size_t smb1cli_req_wct_ofs(struct tevent_req **reqs, int num_reqs)
{
size_t wct_ofs;
int i;
- wct_ofs = smb_wct - 4;
+ wct_ofs = HDR_WCT;
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);
+ struct smbXcli_req_state *state;
+ state = tevent_req_data(reqs[i], struct smbXcli_req_state);
+ wct_ofs += smbXcli_iov_len(state->smb1.iov+2,
+ state->smb1.iov_count-2);
wct_ofs = (wct_ofs + 3) & ~3;
}
return wct_ofs;
}
-NTSTATUS cli_smb_chain_send(struct tevent_req **reqs, int num_reqs)
+NTSTATUS smb1cli_req_chain_submit(struct tevent_req **reqs, int num_reqs)
{
- 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;
+ struct smbXcli_req_state *first_state =
+ tevent_req_data(reqs[0],
+ struct smbXcli_req_state);
+ struct smbXcli_req_state *state;
size_t wct_offset;
size_t chain_padding = 0;
int i, iovlen;
struct iovec *iov = NULL;
struct iovec *this_iov;
NTSTATUS status;
+ size_t nbt_len;
+
+ if (num_reqs == 1) {
+ return smb1cli_req_writev_submit(reqs[0], first_state,
+ first_state->smb1.iov,
+ first_state->smb1.iov_count);
+ }
iovlen = 0;
for (i=0; i<num_reqs; i++) {
return NT_STATUS_INTERNAL_ERROR;
}
- state = tevent_req_data(reqs[i], struct cli_smb_state);
- iovlen += state->iov_count;
+ state = tevent_req_data(reqs[i], struct smbXcli_req_state);
+
+ if (state->smb1.iov_count < 4) {
+ return NT_STATUS_INVALID_PARAMETER_MIX;
+ }
+
+ if (i == 0) {
+ /*
+ * The NBT and SMB header
+ */
+ iovlen += 2;
+ } else {
+ /*
+ * Chain padding
+ */
+ iovlen += 1;
+ }
+
+ /*
+ * words and bytes
+ */
+ iovlen += state->smb1.iov_count - 2;
}
- iov = talloc_array(last_state, struct iovec, iovlen);
+ iov = talloc_zero_array(first_state, struct iovec, iovlen);
if (iov == NULL) {
return NT_STATUS_NO_MEMORY;
}
- first_state->chained_requests = (struct tevent_req **)talloc_memdup(
- last_state, reqs, sizeof(*reqs) * num_reqs);
- if (first_state->chained_requests == NULL) {
+ first_state->smb1.chained_requests = (struct tevent_req **)talloc_memdup(
+ first_state, reqs, sizeof(*reqs) * num_reqs);
+ if (first_state->smb1.chained_requests == NULL) {
TALLOC_FREE(iov);
return NT_STATUS_NO_MEMORY;
}
- wct_offset = smb_wct - 4;
+ wct_offset = HDR_WCT;
this_iov = iov;
for (i=0; i<num_reqs; i++) {
size_t next_padding = 0;
uint16_t *vwv;
- state = tevent_req_data(reqs[i], struct cli_smb_state);
+ state = tevent_req_data(reqs[i], struct smbXcli_req_state);
if (i < num_reqs-1) {
- if (!is_andx_req(CVAL(state->header, smb_com))
- || CVAL(state->header, smb_wct) < 2) {
+ if (!smb1cli_is_andx_req(CVAL(state->smb1.hdr, HDR_COM))
+ || CVAL(state->smb1.hdr, HDR_WCT) < 2) {
TALLOC_FREE(iov);
- TALLOC_FREE(first_state->chained_requests);
- return NT_STATUS_INVALID_PARAMETER;
+ TALLOC_FREE(first_state->smb1.chained_requests);
+ return NT_STATUS_INVALID_PARAMETER_MIX;
}
}
- wct_offset += iov_len(state->iov+1, state->iov_count-1) + 1;
+ wct_offset += smbXcli_iov_len(state->smb1.iov+2,
+ state->smb1.iov_count-2) + 1;
if ((wct_offset % 4) != 0) {
next_padding = 4 - (wct_offset % 4);
}
wct_offset += next_padding;
- vwv = state->vwv;
+ vwv = state->smb1.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));
+ struct smbXcli_req_state *next_state =
+ tevent_req_data(reqs[i+1],
+ struct smbXcli_req_state);
+ SCVAL(vwv+0, 0, CVAL(next_state->smb1.hdr, HDR_COM));
SCVAL(vwv+0, 1, 0);
SSVAL(vwv+1, 0, wct_offset);
- } else if (is_andx_req(CVAL(state->header, smb_com))) {
+ } else if (smb1cli_is_andx_req(CVAL(state->smb1.hdr, HDR_COM))) {
/* properly end the chain */
SCVAL(vwv+0, 0, 0xff);
SCVAL(vwv+0, 1, 0xff);
}
if (i == 0) {
- this_iov[0] = state->iov[0];
+ /*
+ * The NBT and SMB header
+ */
+ this_iov[0] = state->smb1.iov[0];
+ this_iov[1] = state->smb1.iov[1];
+ this_iov += 2;
} else {
/*
* This one is a bit subtle. We have to add
* last byte.
*/
this_iov[0].iov_len = chain_padding+1;
- this_iov[0].iov_base = (void *)&state->header[
- sizeof(state->header) - this_iov[0].iov_len];
+ this_iov[0].iov_base = (void *)&state->smb1.hdr[
+ sizeof(state->smb1.hdr) - this_iov[0].iov_len];
memset(this_iov[0].iov_base, 0, this_iov[0].iov_len-1);
+ this_iov += 1;
}
- memcpy(this_iov+1, state->iov+1,
- sizeof(struct iovec) * (state->iov_count-1));
- this_iov += state->iov_count;
+
+ /*
+ * copy the words and bytes
+ */
+ memcpy(this_iov, state->smb1.iov+2,
+ sizeof(struct iovec) * (state->smb1.iov_count-2));
+ this_iov += state->smb1.iov_count - 2;
chain_padding = next_padding;
}
- status = cli_smb_req_iov_send(reqs[0], last_state, iov, iovlen);
+ nbt_len = smbXcli_iov_len(&iov[1], iovlen-1);
+ if (nbt_len > first_state->conn->smb1.max_xmit) {
+ TALLOC_FREE(iov);
+ TALLOC_FREE(first_state->smb1.chained_requests);
+ return NT_STATUS_INVALID_PARAMETER_MIX;
+ }
+
+ status = smb1cli_req_writev_submit(reqs[0], first_state, iov, iovlen);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(iov);
- TALLOC_FREE(first_state->chained_requests);
+ TALLOC_FREE(first_state->smb1.chained_requests);
return status;
}
- for (i=0; i < (num_reqs - 1); i++) {
- state = tevent_req_data(reqs[i], struct cli_smb_state);
+ return NT_STATUS_OK;
+}
+
+bool smbXcli_conn_has_async_calls(struct smbXcli_conn *conn)
+{
+ return ((tevent_queue_length(conn->outgoing) != 0)
+ || (talloc_array_length(conn->pending) != 0));
+}
+
+uint32_t smb2cli_conn_server_capabilities(struct smbXcli_conn *conn)
+{
+ return conn->smb2.server.capabilities;
+}
+
+uint16_t smb2cli_conn_server_security_mode(struct smbXcli_conn *conn)
+{
+ return conn->smb2.server.security_mode;
+}
+
+uint32_t smb2cli_conn_max_trans_size(struct smbXcli_conn *conn)
+{
+ return conn->smb2.server.max_trans_size;
+}
+
+uint32_t smb2cli_conn_max_read_size(struct smbXcli_conn *conn)
+{
+ return conn->smb2.server.max_read_size;
+}
+
+uint32_t smb2cli_conn_max_write_size(struct smbXcli_conn *conn)
+{
+ return conn->smb2.server.max_write_size;
+}
+
+void smb2cli_conn_set_max_credits(struct smbXcli_conn *conn,
+ uint16_t max_credits)
+{
+ conn->smb2.max_credits = max_credits;
+}
+
+static void smb2cli_req_cancel_done(struct tevent_req *subreq);
+
+static bool smb2cli_req_cancel(struct tevent_req *req)
+{
+ struct smbXcli_req_state *state =
+ tevent_req_data(req,
+ struct smbXcli_req_state);
+ uint32_t flags = IVAL(state->smb2.hdr, SMB2_HDR_FLAGS);
+ uint32_t pid = IVAL(state->smb2.hdr, SMB2_HDR_PID);
+ uint32_t tid = IVAL(state->smb2.hdr, SMB2_HDR_TID);
+ uint64_t mid = BVAL(state->smb2.hdr, SMB2_HDR_MESSAGE_ID);
+ uint64_t aid = BVAL(state->smb2.hdr, SMB2_HDR_ASYNC_ID);
+ struct smbXcli_session *session = state->session;
+ uint8_t *fixed = state->smb2.pad;
+ uint16_t fixed_len = 4;
+ struct tevent_req *subreq;
+ struct smbXcli_req_state *substate;
+ NTSTATUS status;
+
+ SSVAL(fixed, 0, 0x04);
+ SSVAL(fixed, 2, 0);
+
+ subreq = smb2cli_req_create(state, state->ev,
+ state->conn,
+ SMB2_OP_CANCEL,
+ flags, 0,
+ 0, /* timeout */
+ pid, tid, session,
+ fixed, fixed_len,
+ NULL, 0);
+ if (subreq == NULL) {
+ return false;
+ }
+ substate = tevent_req_data(subreq, struct smbXcli_req_state);
+
+ if (flags & SMB2_HDR_FLAG_ASYNC) {
+ mid = 0;
+ }
+
+ SIVAL(substate->smb2.hdr, SMB2_HDR_FLAGS, flags);
+ SIVAL(substate->smb2.hdr, SMB2_HDR_PID, pid);
+ SIVAL(substate->smb2.hdr, SMB2_HDR_TID, tid);
+ SBVAL(substate->smb2.hdr, SMB2_HDR_MESSAGE_ID, mid);
+ SBVAL(substate->smb2.hdr, SMB2_HDR_ASYNC_ID, aid);
- state->seqnum = last_state->seqnum;
+ status = smb2cli_req_compound_submit(&subreq, 1);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(subreq);
+ return false;
}
- return NT_STATUS_OK;
+ tevent_req_set_callback(subreq, smb2cli_req_cancel_done, NULL);
+
+ return true;
+}
+
+static void smb2cli_req_cancel_done(struct tevent_req *subreq)
+{
+ /* we do not care about the result */
+ TALLOC_FREE(subreq);
+}
+
+struct tevent_req *smb2cli_req_create(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct smbXcli_conn *conn,
+ uint16_t cmd,
+ uint32_t additional_flags,
+ uint32_t clear_flags,
+ uint32_t timeout_msec,
+ uint32_t pid,
+ uint32_t tid,
+ struct smbXcli_session *session,
+ const uint8_t *fixed,
+ uint16_t fixed_len,
+ const uint8_t *dyn,
+ uint32_t dyn_len)
+{
+ struct tevent_req *req;
+ struct smbXcli_req_state *state;
+ uint32_t flags = 0;
+ uint64_t uid = 0;
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct smbXcli_req_state);
+ if (req == NULL) {
+ return NULL;
+ }
+
+ state->ev = ev;
+ state->conn = conn;
+ state->session = session;
+
+ if (session) {
+ uid = session->smb2.session_id;
+ }
+
+ state->smb2.recv_iov = talloc_zero_array(state, struct iovec, 3);
+ if (state->smb2.recv_iov == NULL) {
+ TALLOC_FREE(req);
+ return NULL;
+ }
+
+ flags |= additional_flags;
+ flags &= ~clear_flags;
+
+ state->smb2.fixed = fixed;
+ state->smb2.fixed_len = fixed_len;
+ state->smb2.dyn = dyn;
+ state->smb2.dyn_len = dyn_len;
+
+ SIVAL(state->smb2.hdr, SMB2_HDR_PROTOCOL_ID, SMB2_MAGIC);
+ SSVAL(state->smb2.hdr, SMB2_HDR_LENGTH, SMB2_HDR_BODY);
+ SSVAL(state->smb2.hdr, SMB2_HDR_OPCODE, cmd);
+ SIVAL(state->smb2.hdr, SMB2_HDR_FLAGS, flags);
+ SIVAL(state->smb2.hdr, SMB2_HDR_PID, pid);
+ SIVAL(state->smb2.hdr, SMB2_HDR_TID, tid);
+ SBVAL(state->smb2.hdr, SMB2_HDR_SESSION_ID, uid);
+
+ switch (cmd) {
+ case SMB2_OP_CANCEL:
+ state->one_way = true;
+ break;
+ case SMB2_OP_BREAK:
+ /*
+ * If this is a dummy request, it will have
+ * UINT64_MAX as message id.
+ * If we send on break acknowledgement,
+ * this gets overwritten later.
+ */
+ SBVAL(state->smb2.hdr, SMB2_HDR_MESSAGE_ID, UINT64_MAX);
+ break;
+ }
+
+ if (timeout_msec > 0) {
+ struct timeval endtime;
+
+ endtime = timeval_current_ofs_msec(timeout_msec);
+ if (!tevent_req_set_endtime(req, ev, endtime)) {
+ return req;
+ }
+ }
+
+ return req;
+}
+
+void smb2cli_req_set_notify_async(struct tevent_req *req)
+{
+ struct smbXcli_req_state *state =
+ tevent_req_data(req,
+ struct smbXcli_req_state);
+
+ state->smb2.notify_async = true;
}
-bool cli_has_async_calls(struct cli_state *cli)
+static void smb2cli_req_writev_done(struct tevent_req *subreq);
+static NTSTATUS smb2cli_conn_dispatch_incoming(struct smbXcli_conn *conn,
+ TALLOC_CTX *tmp_mem,
+ uint8_t *inbuf);
+
+NTSTATUS smb2cli_req_compound_submit(struct tevent_req **reqs,
+ int num_reqs)
{
- return ((tevent_queue_length(cli->conn.outgoing) != 0)
- || (talloc_array_length(cli->conn.pending) != 0));
+ struct smbXcli_req_state *state;
+ struct tevent_req *subreq;
+ struct iovec *iov;
+ int i, num_iov, nbt_len;
+
+ /*
+ * 1 for the nbt length
+ * per request: HDR, fixed, dyn, padding
+ * -1 because the last one does not need padding
+ */
+
+ iov = talloc_array(reqs[0], struct iovec, 1 + 4*num_reqs - 1);
+ if (iov == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ num_iov = 1;
+ nbt_len = 0;
+
+ for (i=0; i<num_reqs; i++) {
+ int hdr_iov;
+ size_t reqlen;
+ bool ret;
+ uint16_t opcode;
+ uint64_t avail;
+ uint16_t charge;
+ uint16_t credits;
+ uint64_t mid;
+ const DATA_BLOB *signing_key = NULL;
+
+ if (!tevent_req_is_in_progress(reqs[i])) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ state = tevent_req_data(reqs[i], struct smbXcli_req_state);
+
+ if (!smbXcli_conn_is_connected(state->conn)) {
+ return NT_STATUS_CONNECTION_DISCONNECTED;
+ }
+
+ if ((state->conn->protocol != PROTOCOL_NONE) &&
+ (state->conn->protocol < PROTOCOL_SMB2_02)) {
+ return NT_STATUS_REVISION_MISMATCH;
+ }
+
+ opcode = SVAL(state->smb2.hdr, SMB2_HDR_OPCODE);
+ if (opcode == SMB2_OP_CANCEL) {
+ goto skip_credits;
+ }
+
+ avail = UINT64_MAX - state->conn->smb2.mid;
+ if (avail < 1) {
+ return NT_STATUS_CONNECTION_ABORTED;
+ }
+
+ if (state->conn->smb2.server.capabilities & SMB2_CAP_LARGE_MTU) {
+ charge = (MAX(state->smb2.dyn_len, 1) - 1)/ 65536 + 1;
+ } else {
+ charge = 1;
+ }
+
+ charge = MAX(state->smb2.credit_charge, charge);
+
+ avail = MIN(avail, state->conn->smb2.cur_credits);
+ if (avail < charge) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ credits = 0;
+ if (state->conn->smb2.max_credits > state->conn->smb2.cur_credits) {
+ credits = state->conn->smb2.max_credits -
+ state->conn->smb2.cur_credits;
+ }
+ if (state->conn->smb2.max_credits >= state->conn->smb2.cur_credits) {
+ credits += 1;
+ }
+
+ mid = state->conn->smb2.mid;
+ state->conn->smb2.mid += charge;
+ state->conn->smb2.cur_credits -= charge;
+
+ if (state->conn->smb2.server.capabilities & SMB2_CAP_LARGE_MTU) {
+ SSVAL(state->smb2.hdr, SMB2_HDR_CREDIT_CHARGE, charge);
+ }
+ SSVAL(state->smb2.hdr, SMB2_HDR_CREDIT, credits);
+ SBVAL(state->smb2.hdr, SMB2_HDR_MESSAGE_ID, mid);
+
+skip_credits:
+ hdr_iov = num_iov;
+ iov[num_iov].iov_base = state->smb2.hdr;
+ iov[num_iov].iov_len = sizeof(state->smb2.hdr);
+ num_iov += 1;
+
+ iov[num_iov].iov_base = discard_const(state->smb2.fixed);
+ iov[num_iov].iov_len = state->smb2.fixed_len;
+ num_iov += 1;
+
+ if (state->smb2.dyn != NULL) {
+ iov[num_iov].iov_base = discard_const(state->smb2.dyn);
+ iov[num_iov].iov_len = state->smb2.dyn_len;
+ num_iov += 1;
+ }
+
+ reqlen = sizeof(state->smb2.hdr);
+ reqlen += state->smb2.fixed_len;
+ reqlen += state->smb2.dyn_len;
+
+ if (i < num_reqs-1) {
+ if ((reqlen % 8) > 0) {
+ uint8_t pad = 8 - (reqlen % 8);
+ iov[num_iov].iov_base = state->smb2.pad;
+ iov[num_iov].iov_len = pad;
+ num_iov += 1;
+ reqlen += pad;
+ }
+ SIVAL(state->smb2.hdr, SMB2_HDR_NEXT_COMMAND, reqlen);
+ }
+ nbt_len += reqlen;
+
+ if (state->session) {
+ bool should_sign = state->session->smb2.should_sign;
+
+ if (opcode == SMB2_OP_SESSSETUP &&
+ state->session->smb2.signing_key.length != 0) {
+ should_sign = true;
+ }
+
+ /*
+ * We prefer the channel signing key if it is
+ * already there.
+ */
+ if (should_sign) {
+ signing_key = &state->session->smb2.channel_signing_key;
+ }
+
+ /*
+ * If it is a channel binding, we already have the main
+ * signing key and try that one.
+ */
+ if (signing_key && signing_key->length == 0) {
+ signing_key = &state->session->smb2.signing_key;
+ }
+
+ /*
+ * If we do not have any session key yet, we skip the
+ * signing of SMB2_OP_SESSSETUP requests.
+ */
+ if (signing_key && signing_key->length == 0) {
+ signing_key = NULL;
+ }
+ }
+
+ if (signing_key) {
+ NTSTATUS status;
+
+ status = smb2_signing_sign_pdu(*signing_key,
+ state->session->conn->protocol,
+ &iov[hdr_iov], num_iov - hdr_iov);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+ }
+
+ ret = smbXcli_req_set_pending(reqs[i]);
+ if (!ret) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ }
+
+ state = tevent_req_data(reqs[0], struct smbXcli_req_state);
+ _smb_setlen_tcp(state->length_hdr, nbt_len);
+ iov[0].iov_base = state->length_hdr;
+ iov[0].iov_len = sizeof(state->length_hdr);
+
+ if (state->conn->dispatch_incoming == NULL) {
+ state->conn->dispatch_incoming = smb2cli_conn_dispatch_incoming;
+ }
+
+ subreq = writev_send(state, state->ev, state->conn->outgoing,
+ state->conn->write_fd, false, iov, num_iov);
+ if (subreq == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ tevent_req_set_callback(subreq, smb2cli_req_writev_done, reqs[0]);
+ return NT_STATUS_OK;
+}
+
+void smb2cli_req_set_credit_charge(struct tevent_req *req, uint16_t charge)
+{
+ struct smbXcli_req_state *state =
+ tevent_req_data(req,
+ struct smbXcli_req_state);
+
+ state->smb2.credit_charge = charge;
+}
+
+struct tevent_req *smb2cli_req_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct smbXcli_conn *conn,
+ uint16_t cmd,
+ uint32_t additional_flags,
+ uint32_t clear_flags,
+ uint32_t timeout_msec,
+ uint32_t pid,
+ uint32_t tid,
+ struct smbXcli_session *session,
+ const uint8_t *fixed,
+ uint16_t fixed_len,
+ const uint8_t *dyn,
+ uint32_t dyn_len)
+{
+ struct tevent_req *req;
+ NTSTATUS status;
+
+ req = smb2cli_req_create(mem_ctx, ev, conn, cmd,
+ additional_flags, clear_flags,
+ timeout_msec,
+ pid, tid, session,
+ fixed, fixed_len, dyn, dyn_len);
+ if (req == NULL) {
+ return NULL;
+ }
+ if (!tevent_req_is_in_progress(req)) {
+ return tevent_req_post(req, ev);
+ }
+ status = smb2cli_req_compound_submit(&req, 1);
+ if (tevent_req_nterror(req, status)) {
+ return tevent_req_post(req, ev);
+ }
+ return req;
+}
+
+static void smb2cli_req_writev_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req =
+ tevent_req_callback_data(subreq,
+ struct tevent_req);
+ struct smbXcli_req_state *state =
+ tevent_req_data(req,
+ struct smbXcli_req_state);
+ ssize_t nwritten;
+ int err;
+
+ nwritten = writev_recv(subreq, &err);
+ TALLOC_FREE(subreq);
+ if (nwritten == -1) {
+ /* here, we need to notify all pending requests */
+ NTSTATUS status = map_nt_error_from_unix_common(err);
+ smbXcli_conn_disconnect(state->conn, status);
+ return;
+ }
+}
+
+static NTSTATUS smb2cli_inbuf_parse_compound(uint8_t *buf, TALLOC_CTX *mem_ctx,
+ struct iovec **piov, int *pnum_iov)
+{
+ struct iovec *iov;
+ int num_iov;
+ size_t buflen;
+ size_t taken;
+ uint8_t *first_hdr;
+
+ num_iov = 0;
+
+ iov = talloc_array(mem_ctx, struct iovec, num_iov);
+ if (iov == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ buflen = smb_len_tcp(buf);
+ taken = 0;
+ first_hdr = buf + NBT_HDR_SIZE;
+
+ while (taken < buflen) {
+ size_t len = buflen - taken;
+ uint8_t *hdr = first_hdr + taken;
+ struct iovec *cur;
+ size_t full_size;
+ size_t next_command_ofs;
+ uint16_t body_size;
+ struct iovec *iov_tmp;
+
+ /*
+ * We need the header plus the body length field
+ */
+
+ if (len < SMB2_HDR_BODY + 2) {
+ DEBUG(10, ("%d bytes left, expected at least %d\n",
+ (int)len, SMB2_HDR_BODY));
+ goto inval;
+ }
+ if (IVAL(hdr, 0) != SMB2_MAGIC) {
+ DEBUG(10, ("Got non-SMB2 PDU: %x\n",
+ IVAL(hdr, 0)));
+ goto inval;
+ }
+ if (SVAL(hdr, 4) != SMB2_HDR_BODY) {
+ DEBUG(10, ("Got HDR len %d, expected %d\n",
+ SVAL(hdr, 4), SMB2_HDR_BODY));
+ goto inval;
+ }
+
+ full_size = len;
+ next_command_ofs = IVAL(hdr, SMB2_HDR_NEXT_COMMAND);
+ body_size = SVAL(hdr, SMB2_HDR_BODY);
+
+ if (next_command_ofs != 0) {
+ if (next_command_ofs < (SMB2_HDR_BODY + 2)) {
+ goto inval;
+ }
+ if (next_command_ofs > full_size) {
+ goto inval;
+ }
+ full_size = next_command_ofs;
+ }
+ if (body_size < 2) {
+ goto inval;
+ }
+ body_size &= 0xfffe;
+
+ if (body_size > (full_size - SMB2_HDR_BODY)) {
+ goto inval;
+ }
+
+ iov_tmp = talloc_realloc(mem_ctx, iov, struct iovec,
+ num_iov + 3);
+ if (iov_tmp == NULL) {
+ TALLOC_FREE(iov);
+ return NT_STATUS_NO_MEMORY;
+ }
+ iov = iov_tmp;
+ cur = &iov[num_iov];
+ num_iov += 3;
+
+ cur[0].iov_base = hdr;
+ cur[0].iov_len = SMB2_HDR_BODY;
+ cur[1].iov_base = hdr + SMB2_HDR_BODY;
+ cur[1].iov_len = body_size;
+ cur[2].iov_base = hdr + SMB2_HDR_BODY + body_size;
+ cur[2].iov_len = full_size - (SMB2_HDR_BODY + body_size);
+
+ taken += full_size;
+ }
+
+ *piov = iov;
+ *pnum_iov = num_iov;
+ return NT_STATUS_OK;
+
+inval:
+ TALLOC_FREE(iov);
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+}
+
+static struct tevent_req *smb2cli_conn_find_pending(struct smbXcli_conn *conn,
+ uint64_t mid)
+{
+ size_t num_pending = talloc_array_length(conn->pending);
+ size_t i;
+
+ for (i=0; i<num_pending; i++) {
+ struct tevent_req *req = conn->pending[i];
+ struct smbXcli_req_state *state =
+ tevent_req_data(req,
+ struct smbXcli_req_state);
+
+ if (mid == BVAL(state->smb2.hdr, SMB2_HDR_MESSAGE_ID)) {
+ return req;
+ }
+ }
+ return NULL;
+}
+
+static NTSTATUS smb2cli_conn_dispatch_incoming(struct smbXcli_conn *conn,
+ TALLOC_CTX *tmp_mem,
+ uint8_t *inbuf)
+{
+ struct tevent_req *req;
+ struct smbXcli_req_state *state = NULL;
+ struct iovec *iov;
+ int i, num_iov;
+ NTSTATUS status;
+ bool defer = true;
+ struct smbXcli_session *last_session = NULL;
+
+ status = smb2cli_inbuf_parse_compound(inbuf, tmp_mem,
+ &iov, &num_iov);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ for (i=0; i<num_iov; i+=3) {
+ uint8_t *inbuf_ref = NULL;
+ struct iovec *cur = &iov[i];
+ uint8_t *inhdr = (uint8_t *)cur[0].iov_base;
+ uint16_t opcode = SVAL(inhdr, SMB2_HDR_OPCODE);
+ uint32_t flags = IVAL(inhdr, SMB2_HDR_FLAGS);
+ uint64_t mid = BVAL(inhdr, SMB2_HDR_MESSAGE_ID);
+ uint16_t req_opcode;
+ uint32_t req_flags;
+ uint16_t credits = SVAL(inhdr, SMB2_HDR_CREDIT);
+ uint32_t new_credits;
+ struct smbXcli_session *session = NULL;
+ const DATA_BLOB *signing_key = NULL;
+ bool should_sign = false;
+
+ new_credits = conn->smb2.cur_credits;
+ new_credits += credits;
+ if (new_credits > UINT16_MAX) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
+ conn->smb2.cur_credits += credits;
+
+ req = smb2cli_conn_find_pending(conn, mid);
+ if (req == NULL) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
+ state = tevent_req_data(req, struct smbXcli_req_state);
+
+ state->smb2.got_async = false;
+
+ req_opcode = SVAL(state->smb2.hdr, SMB2_HDR_OPCODE);
+ if (opcode != req_opcode) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
+ req_flags = SVAL(state->smb2.hdr, SMB2_HDR_FLAGS);
+
+ if (!(flags & SMB2_HDR_FLAG_REDIRECT)) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
+
+ status = NT_STATUS(IVAL(inhdr, SMB2_HDR_STATUS));
+ if ((flags & SMB2_HDR_FLAG_ASYNC) &&
+ NT_STATUS_EQUAL(status, STATUS_PENDING)) {
+ uint64_t async_id = BVAL(inhdr, SMB2_HDR_ASYNC_ID);
+
+ /*
+ * async interim responses are not signed,
+ * even if the SMB2_HDR_FLAG_SIGNED flag
+ * is set.
+ */
+ req_flags |= SMB2_HDR_FLAG_ASYNC;
+ SBVAL(state->smb2.hdr, SMB2_HDR_FLAGS, req_flags);
+ SBVAL(state->smb2.hdr, SMB2_HDR_ASYNC_ID, async_id);
+
+ if (state->smb2.notify_async) {
+ state->smb2.got_async = true;
+ tevent_req_defer_callback(req, state->ev);
+ tevent_req_notify_callback(req);
+ }
+ continue;
+ }
+
+ session = state->session;
+ if (req_flags & SMB2_HDR_FLAG_CHAINED) {
+ session = last_session;
+ }
+ last_session = session;
+
+ if (session) {
+ should_sign = session->smb2.should_sign;
+ if (opcode == SMB2_OP_SESSSETUP &&
+ session->smb2.signing_key.length != 0) {
+ should_sign = true;
+ }
+ }
+
+ if (should_sign) {
+ if (!(flags & SMB2_HDR_FLAG_SIGNED)) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+ }
+
+ if (flags & SMB2_HDR_FLAG_SIGNED) {
+ uint64_t uid = BVAL(inhdr, SMB2_HDR_SESSION_ID);
+
+ if (session == NULL) {
+ struct smbXcli_session *s;
+
+ s = state->conn->sessions;
+ for (; s; s = s->next) {
+ if (s->smb2.session_id != uid) {
+ continue;
+ }
+
+ session = s;
+ break;
+ }
+ }
+
+ if (session == NULL) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
+
+ last_session = session;
+ signing_key = &session->smb2.channel_signing_key;
+ }
+
+ if (opcode == SMB2_OP_SESSSETUP) {
+ /*
+ * We prefer the channel signing key, if it is
+ * already there.
+ *
+ * If we do not have a channel signing key yet,
+ * we try the main signing key, if it is not
+ * the final response.
+ */
+ if (signing_key && signing_key->length == 0 &&
+ !NT_STATUS_IS_OK(status)) {
+ signing_key = &session->smb2.signing_key;
+ }
+
+ if (signing_key && signing_key->length == 0) {
+ /*
+ * If we do not have a session key to
+ * verify the signature, we defer the
+ * signing check to the caller.
+ *
+ * The caller gets NT_STATUS_OK, it
+ * has to call
+ * smb2cli_session_set_session_key()
+ * or
+ * smb2cli_session_set_channel_key()
+ * which will check the signature
+ * with the channel signing key.
+ */
+ signing_key = NULL;
+ }
+ }
+
+ if (NT_STATUS_EQUAL(status, NT_STATUS_USER_SESSION_DELETED)) {
+ /*
+ * if the server returns NT_STATUS_USER_SESSION_DELETED
+ * the response is not signed and we should
+ * propagate the NT_STATUS_USER_SESSION_DELETED
+ * status to the caller.
+ */
+ signing_key = NULL;
+ }
+
+ if (NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_NAME_DELETED) ||
+ NT_STATUS_EQUAL(status, NT_STATUS_FILE_CLOSED) ||
+ NT_STATUS_EQUAL(status, NT_STATUS_INVALID_PARAMETER)) {
+ /*
+ * if the server returns
+ * NT_STATUS_NETWORK_NAME_DELETED
+ * NT_STATUS_FILE_CLOSED
+ * NT_STATUS_INVALID_PARAMETER
+ * the response might not be signed
+ * as this happens before the signing checks.
+ *
+ * If server echos the signature (or all zeros)
+ * we should report the status from the server
+ * to the caller.
+ */
+ if (signing_key) {
+ int cmp;
+
+ cmp = memcmp(inhdr+SMB2_HDR_SIGNATURE,
+ state->smb2.hdr+SMB2_HDR_SIGNATURE,
+ 16);
+ if (cmp == 0) {
+ state->smb2.signing_skipped = true;
+ signing_key = NULL;
+ }
+ }
+ if (signing_key) {
+ int cmp;
+ static const uint8_t zeros[16];
+
+ cmp = memcmp(inhdr+SMB2_HDR_SIGNATURE,
+ zeros,
+ 16);
+ if (cmp == 0) {
+ state->smb2.signing_skipped = true;
+ signing_key = NULL;
+ }
+ }
+ }
+
+ if (signing_key) {
+ status = smb2_signing_check_pdu(*signing_key,
+ state->conn->protocol,
+ cur, 3);
+ if (!NT_STATUS_IS_OK(status)) {
+ /*
+ * If the signing check fails, we disconnect
+ * the connection.
+ */
+ return status;
+ }
+ }
+
+ smbXcli_req_unset_pending(req);
+
+ /*
+ * There might be more than one response
+ * we need to defer the notifications
+ */
+ if ((num_iov == 4) && (talloc_array_length(conn->pending) == 0)) {
+ defer = false;
+ }
+
+ if (defer) {
+ tevent_req_defer_callback(req, state->ev);
+ }
+
+ /*
+ * Note: here we use talloc_reference() in a way
+ * that does not expose it to the caller.
+ */
+ inbuf_ref = talloc_reference(state->smb2.recv_iov, inbuf);
+ if (tevent_req_nomem(inbuf_ref, req)) {
+ continue;
+ }
+
+ /* copy the related buffers */
+ state->smb2.recv_iov[0] = cur[0];
+ state->smb2.recv_iov[1] = cur[1];
+ state->smb2.recv_iov[2] = cur[2];
+
+ tevent_req_done(req);
+ }
+
+ if (defer) {
+ return NT_STATUS_RETRY;
+ }
+
+ return NT_STATUS_OK;
+}
+
+NTSTATUS smb2cli_req_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
+ struct iovec **piov,
+ const struct smb2cli_req_expected_response *expected,
+ size_t num_expected)
+{
+ struct smbXcli_req_state *state =
+ tevent_req_data(req,
+ struct smbXcli_req_state);
+ NTSTATUS status;
+ size_t body_size;
+ bool found_status = false;
+ bool found_size = false;
+ size_t i;
+
+ if (piov != NULL) {
+ *piov = NULL;
+ }
+
+ if (state->smb2.got_async) {
+ return STATUS_PENDING;
+ }
+
+ if (tevent_req_is_nterror(req, &status)) {
+ for (i=0; i < num_expected; i++) {
+ if (NT_STATUS_EQUAL(status, expected[i].status)) {
+ found_status = true;
+ break;
+ }
+ }
+
+ if (found_status) {
+ return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
+ }
+
+ return status;
+ }
+
+ if (num_expected == 0) {
+ found_status = true;
+ found_size = true;
+ }
+
+ status = NT_STATUS(IVAL(state->smb2.recv_iov[0].iov_base, SMB2_HDR_STATUS));
+ body_size = SVAL(state->smb2.recv_iov[1].iov_base, 0);
+
+ for (i=0; i < num_expected; i++) {
+ if (!NT_STATUS_EQUAL(status, expected[i].status)) {
+ continue;
+ }
+
+ found_status = true;
+ if (expected[i].body_size == 0) {
+ found_size = true;
+ break;
+ }
+
+ if (expected[i].body_size == body_size) {
+ found_size = true;
+ break;
+ }
+ }
+
+ if (!found_status) {
+ return status;
+ }
+
+ if (state->smb2.signing_skipped) {
+ if (num_expected > 0) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+ if (!NT_STATUS_IS_ERR(status)) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+ }
+
+ if (!found_size) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
+
+ if (piov != NULL) {
+ *piov = talloc_move(mem_ctx, &state->smb2.recv_iov);
+ }
+
+ return status;
+}
+
+static const struct {
+ enum protocol_types proto;
+ const char *smb1_name;
+} smb1cli_prots[] = {
+ {PROTOCOL_CORE, "PC NETWORK PROGRAM 1.0"},
+ {PROTOCOL_COREPLUS, "MICROSOFT NETWORKS 1.03"},
+ {PROTOCOL_LANMAN1, "MICROSOFT NETWORKS 3.0"},
+ {PROTOCOL_LANMAN1, "LANMAN1.0"},
+ {PROTOCOL_LANMAN2, "LM1.2X002"},
+ {PROTOCOL_LANMAN2, "DOS LANMAN2.1"},
+ {PROTOCOL_LANMAN2, "LANMAN2.1"},
+ {PROTOCOL_LANMAN2, "Samba"},
+ {PROTOCOL_NT1, "NT LANMAN 1.0"},
+ {PROTOCOL_NT1, "NT LM 0.12"},
+ {PROTOCOL_SMB2_02, "SMB 2.002"},
+ {PROTOCOL_SMB2_10, "SMB 2.???"},
+};
+
+static const struct {
+ enum protocol_types proto;
+ uint16_t smb2_dialect;
+} smb2cli_prots[] = {
+ {PROTOCOL_SMB2_02, SMB2_DIALECT_REVISION_202},
+ {PROTOCOL_SMB2_10, SMB2_DIALECT_REVISION_210},
+ {PROTOCOL_SMB2_22, SMB2_DIALECT_REVISION_222},
+ {PROTOCOL_SMB2_24, SMB2_DIALECT_REVISION_224},
+ {PROTOCOL_SMB3_00, SMB3_DIALECT_REVISION_300},
+};
+
+struct smbXcli_negprot_state {
+ struct smbXcli_conn *conn;
+ struct tevent_context *ev;
+ uint32_t timeout_msec;
+ enum protocol_types min_protocol;
+ enum protocol_types max_protocol;
+
+ struct {
+ uint8_t fixed[36];
+ uint8_t dyn[ARRAY_SIZE(smb2cli_prots)*2];
+ } smb2;
+};
+
+static void smbXcli_negprot_invalid_done(struct tevent_req *subreq);
+static struct tevent_req *smbXcli_negprot_smb1_subreq(struct smbXcli_negprot_state *state);
+static void smbXcli_negprot_smb1_done(struct tevent_req *subreq);
+static struct tevent_req *smbXcli_negprot_smb2_subreq(struct smbXcli_negprot_state *state);
+static void smbXcli_negprot_smb2_done(struct tevent_req *subreq);
+static NTSTATUS smbXcli_negprot_dispatch_incoming(struct smbXcli_conn *conn,
+ TALLOC_CTX *frame,
+ uint8_t *inbuf);
+
+struct tevent_req *smbXcli_negprot_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct smbXcli_conn *conn,
+ uint32_t timeout_msec,
+ enum protocol_types min_protocol,
+ enum protocol_types max_protocol)
+{
+ struct tevent_req *req, *subreq;
+ struct smbXcli_negprot_state *state;
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct smbXcli_negprot_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->conn = conn;
+ state->ev = ev;
+ state->timeout_msec = timeout_msec;
+ state->min_protocol = min_protocol;
+ state->max_protocol = max_protocol;
+
+ if (min_protocol == PROTOCOL_NONE) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER_MIX);
+ return tevent_req_post(req, ev);
+ }
+
+ if (max_protocol == PROTOCOL_NONE) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER_MIX);
+ return tevent_req_post(req, ev);
+ }
+
+ if (min_protocol > max_protocol) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER_MIX);
+ return tevent_req_post(req, ev);
+ }
+
+ if ((min_protocol < PROTOCOL_SMB2_02) &&
+ (max_protocol < PROTOCOL_SMB2_02)) {
+ /*
+ * SMB1 only...
+ */
+ conn->dispatch_incoming = smb1cli_conn_dispatch_incoming;
+
+ subreq = smbXcli_negprot_smb1_subreq(state);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, smbXcli_negprot_smb1_done, req);
+ return req;
+ }
+
+ if ((min_protocol >= PROTOCOL_SMB2_02) &&
+ (max_protocol >= PROTOCOL_SMB2_02)) {
+ /*
+ * SMB2 only...
+ */
+ conn->dispatch_incoming = smb2cli_conn_dispatch_incoming;
+
+ subreq = smbXcli_negprot_smb2_subreq(state);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, smbXcli_negprot_smb2_done, req);
+ return req;
+ }
+
+ /*
+ * We send an SMB1 negprot with the SMB2 dialects
+ * and expect a SMB1 or a SMB2 response.
+ *
+ * smbXcli_negprot_dispatch_incoming() will fix the
+ * callback to match protocol of the response.
+ */
+ conn->dispatch_incoming = smbXcli_negprot_dispatch_incoming;
+
+ subreq = smbXcli_negprot_smb1_subreq(state);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, smbXcli_negprot_invalid_done, req);
+ return req;
+}
+
+static void smbXcli_negprot_invalid_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req =
+ tevent_req_callback_data(subreq,
+ struct tevent_req);
+ NTSTATUS status;
+
+ /*
+ * we just want the low level error
+ */
+ status = tevent_req_simple_recv_ntstatus(subreq);
+ TALLOC_FREE(subreq);
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+
+ /* this should never happen */
+ tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
+}
+
+static struct tevent_req *smbXcli_negprot_smb1_subreq(struct smbXcli_negprot_state *state)
+{
+ size_t i;
+ DATA_BLOB bytes = data_blob_null;
+ uint8_t flags;
+ uint16_t flags2;
+
+ /* setup the protocol strings */
+ for (i=0; i < ARRAY_SIZE(smb1cli_prots); i++) {
+ uint8_t c = 2;
+ bool ok;
+
+ if (smb1cli_prots[i].proto < state->min_protocol) {
+ continue;
+ }
+
+ if (smb1cli_prots[i].proto > state->max_protocol) {
+ continue;
+ }
+
+ ok = data_blob_append(state, &bytes, &c, sizeof(c));
+ if (!ok) {
+ return NULL;
+ }
+
+ /*
+ * We now it is already ascii and
+ * we want NULL termination.
+ */
+ ok = data_blob_append(state, &bytes,
+ smb1cli_prots[i].smb1_name,
+ strlen(smb1cli_prots[i].smb1_name)+1);
+ if (!ok) {
+ return NULL;
+ }
+ }
+
+ smb1cli_req_flags(state->max_protocol,
+ state->conn->smb1.client.capabilities,
+ SMBnegprot,
+ 0, 0, &flags,
+ 0, 0, &flags2);
+
+ return smb1cli_req_send(state, state->ev, state->conn,
+ SMBnegprot,
+ flags, ~flags,
+ flags2, ~flags2,
+ state->timeout_msec,
+ 0xFFFE, 0, 0, /* pid, tid, uid */
+ 0, NULL, /* wct, vwv */
+ bytes.length, bytes.data);
+}
+
+static void smbXcli_negprot_smb1_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req =
+ tevent_req_callback_data(subreq,
+ struct tevent_req);
+ struct smbXcli_negprot_state *state =
+ tevent_req_data(req,
+ struct smbXcli_negprot_state);
+ struct smbXcli_conn *conn = state->conn;
+ struct iovec *recv_iov = NULL;
+ uint8_t *inhdr;
+ uint8_t wct;
+ uint16_t *vwv;
+ uint32_t num_bytes;
+ uint8_t *bytes;
+ NTSTATUS status;
+ uint16_t protnum;
+ size_t i;
+ size_t num_prots = 0;
+ uint8_t flags;
+ uint32_t client_capabilities = conn->smb1.client.capabilities;
+ uint32_t both_capabilities;
+ uint32_t server_capabilities = 0;
+ uint32_t capabilities;
+ uint32_t client_max_xmit = conn->smb1.client.max_xmit;
+ uint32_t server_max_xmit = 0;
+ uint32_t max_xmit;
+ uint32_t server_max_mux = 0;
+ uint16_t server_security_mode = 0;
+ uint32_t server_session_key = 0;
+ bool server_readbraw = false;
+ bool server_writebraw = false;
+ bool server_lockread = false;
+ bool server_writeunlock = false;
+ struct GUID server_guid = GUID_zero();
+ DATA_BLOB server_gss_blob = data_blob_null;
+ uint8_t server_challenge[8];
+ char *server_workgroup = NULL;
+ char *server_name = NULL;
+ int server_time_zone = 0;
+ NTTIME server_system_time = 0;
+ static const struct smb1cli_req_expected_response expected[] = {
+ {
+ .status = NT_STATUS_OK,
+ .wct = 0x11, /* NT1 */
+ },
+ {
+ .status = NT_STATUS_OK,
+ .wct = 0x0D, /* LM */
+ },
+ {
+ .status = NT_STATUS_OK,
+ .wct = 0x01, /* CORE */
+ }
+ };
+
+ ZERO_STRUCT(server_challenge);
+
+ status = smb1cli_req_recv(subreq, state,
+ &recv_iov,
+ &inhdr,
+ &wct,
+ &vwv,
+ NULL, /* pvwv_offset */
+ &num_bytes,
+ &bytes,
+ NULL, /* pbytes_offset */
+ NULL, /* pinbuf */
+ expected, ARRAY_SIZE(expected));
+ TALLOC_FREE(subreq);
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+
+ flags = CVAL(inhdr, HDR_FLG);
+
+ protnum = SVAL(vwv, 0);
+
+ for (i=0; i < ARRAY_SIZE(smb1cli_prots); i++) {
+ if (smb1cli_prots[i].proto < state->min_protocol) {
+ continue;
+ }
+
+ if (smb1cli_prots[i].proto > state->max_protocol) {
+ continue;
+ }
+
+ if (protnum != num_prots) {
+ num_prots++;
+ continue;
+ }
+
+ conn->protocol = smb1cli_prots[i].proto;
+ break;
+ }
+
+ if (conn->protocol == PROTOCOL_NONE) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+ return;
+ }
+
+ if ((conn->protocol < PROTOCOL_NT1) && conn->mandatory_signing) {
+ DEBUG(0,("smbXcli_negprot: SMB signing is mandatory "
+ "and the selected protocol level doesn't support it.\n"));
+ tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
+ return;
+ }
+
+ if (flags & FLAG_SUPPORT_LOCKREAD) {
+ server_lockread = true;
+ server_writeunlock = true;
+ }
+
+ if (conn->protocol >= PROTOCOL_NT1) {
+ const char *client_signing = NULL;
+ bool server_mandatory = false;
+ bool server_allowed = false;
+ const char *server_signing = NULL;
+ bool ok;
+ uint8_t key_len;
+
+ if (wct != 0x11) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+ return;
+ }
+
+ /* NT protocol */
+ server_security_mode = CVAL(vwv + 1, 0);
+ server_max_mux = SVAL(vwv + 1, 1);
+ server_max_xmit = IVAL(vwv + 3, 1);
+ server_session_key = IVAL(vwv + 7, 1);
+ server_time_zone = SVALS(vwv + 15, 1);
+ server_time_zone *= 60;
+ /* this time arrives in real GMT */
+ server_system_time = BVAL(vwv + 11, 1);
+ server_capabilities = IVAL(vwv + 9, 1);
+
+ key_len = CVAL(vwv + 16, 1);
+
+ if (server_capabilities & CAP_RAW_MODE) {
+ server_readbraw = true;
+ server_writebraw = true;
+ }
+ if (server_capabilities & CAP_LOCK_AND_READ) {
+ server_lockread = true;
+ }
+
+ if (server_capabilities & CAP_EXTENDED_SECURITY) {
+ DATA_BLOB blob1, blob2;
+
+ if (num_bytes < 16) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+ return;
+ }
+
+ blob1 = data_blob_const(bytes, 16);
+ status = GUID_from_data_blob(&blob1, &server_guid);
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+
+ blob1 = data_blob_const(bytes+16, num_bytes-16);
+ blob2 = data_blob_dup_talloc(state, blob1);
+ if (blob1.length > 0 &&
+ tevent_req_nomem(blob2.data, req)) {
+ return;
+ }
+ server_gss_blob = blob2;
+ } else {
+ DATA_BLOB blob1, blob2;
+
+ if (num_bytes < key_len) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+ return;
+ }
+
+ if (key_len != 0 && key_len != 8) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+ return;
+ }
+
+ if (key_len == 8) {
+ memcpy(server_challenge, bytes, 8);
+ }
+
+ blob1 = data_blob_const(bytes+key_len, num_bytes-key_len);
+ blob2 = data_blob_const(bytes+key_len, num_bytes-key_len);
+ if (blob1.length > 0) {
+ size_t len;
+
+ len = utf16_len_n(blob1.data,
+ blob1.length);
+ blob1.length = len;
+
+ ok = convert_string_talloc(state,
+ CH_UTF16LE,
+ CH_UNIX,
+ blob1.data,
+ blob1.length,
+ &server_workgroup,
+ &len);
+ if (!ok) {
+ status = map_nt_error_from_unix_common(errno);
+ tevent_req_nterror(req, status);
+ return;
+ }
+ }
+
+ blob2.data += blob1.length;
+ blob2.length -= blob1.length;
+ if (blob2.length > 0) {
+ size_t len;
+
+ len = utf16_len_n(blob1.data,
+ blob1.length);
+ blob1.length = len;
+
+ ok = convert_string_talloc(state,
+ CH_UTF16LE,
+ CH_UNIX,
+ blob2.data,
+ blob2.length,
+ &server_name,
+ &len);
+ if (!ok) {
+ status = map_nt_error_from_unix_common(errno);
+ tevent_req_nterror(req, status);
+ return;
+ }
+ }
+ }
+
+ client_signing = "disabled";
+ if (conn->allow_signing) {
+ client_signing = "allowed";
+ }
+ if (conn->mandatory_signing) {
+ client_signing = "required";
+ }
+
+ server_signing = "not supported";
+ if (server_security_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED) {
+ server_signing = "supported";
+ server_allowed = true;
+ }
+ if (server_security_mode & NEGOTIATE_SECURITY_SIGNATURES_REQUIRED) {
+ server_signing = "required";
+ server_mandatory = true;
+ }
+
+ ok = smb_signing_set_negotiated(conn->smb1.signing,
+ server_allowed,
+ server_mandatory);
+ if (!ok) {
+ DEBUG(1,("cli_negprot: SMB signing is required, "
+ "but client[%s] and server[%s] mismatch\n",
+ client_signing, server_signing));
+ tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
+ return;
+ }
+
+ } else if (conn->protocol >= PROTOCOL_LANMAN1) {
+ DATA_BLOB blob1;
+ uint8_t key_len;
+ time_t t;
+
+ if (wct != 0x0D) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+ return;
+ }
+
+ server_security_mode = SVAL(vwv + 1, 0);
+ server_max_xmit = SVAL(vwv + 2, 0);
+ server_max_mux = SVAL(vwv + 3, 0);
+ server_readbraw = ((SVAL(vwv + 5, 0) & 0x1) != 0);
+ server_writebraw = ((SVAL(vwv + 5, 0) & 0x2) != 0);
+ server_session_key = IVAL(vwv + 6, 0);
+ server_time_zone = SVALS(vwv + 10, 0);
+ server_time_zone *= 60;
+ /* this time is converted to GMT by make_unix_date */
+ t = pull_dos_date((const uint8_t *)(vwv + 8), server_time_zone);
+ unix_to_nt_time(&server_system_time, t);
+ key_len = SVAL(vwv + 11, 0);
+
+ if (num_bytes < key_len) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+ return;
+ }
+
+ if (key_len != 0 && key_len != 8) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+ return;
+ }
+
+ if (key_len == 8) {
+ memcpy(server_challenge, bytes, 8);
+ }
+
+ blob1 = data_blob_const(bytes+key_len, num_bytes-key_len);
+ if (blob1.length > 0) {
+ size_t len;
+ bool ok;
+
+ len = utf16_len_n(blob1.data,
+ blob1.length);
+ blob1.length = len;
+
+ ok = convert_string_talloc(state,
+ CH_DOS,
+ CH_UNIX,
+ blob1.data,
+ blob1.length,
+ &server_workgroup,
+ &len);
+ if (!ok) {
+ status = map_nt_error_from_unix_common(errno);
+ tevent_req_nterror(req, status);
+ return;
+ }
+ }
+
+ } else {
+ /* the old core protocol */
+ server_time_zone = get_time_zone(time(NULL));
+ server_max_xmit = 1024;
+ server_max_mux = 1;
+ }
+
+ if (server_max_xmit < 1024) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+ return;
+ }
+
+ if (server_max_mux < 1) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+ return;
+ }
+
+ /*
+ * Now calculate the negotiated capabilities
+ * based on the mask for:
+ * - client only flags
+ * - flags used in both directions
+ * - server only flags
+ */
+ both_capabilities = client_capabilities & server_capabilities;
+ capabilities = client_capabilities & SMB_CAP_CLIENT_MASK;
+ capabilities |= both_capabilities & SMB_CAP_BOTH_MASK;
+ capabilities |= server_capabilities & SMB_CAP_SERVER_MASK;
+
+ max_xmit = MIN(client_max_xmit, server_max_xmit);
+
+ conn->smb1.server.capabilities = server_capabilities;
+ conn->smb1.capabilities = capabilities;
+
+ conn->smb1.server.max_xmit = server_max_xmit;
+ conn->smb1.max_xmit = max_xmit;
+
+ conn->smb1.server.max_mux = server_max_mux;
+
+ conn->smb1.server.security_mode = server_security_mode;
+
+ conn->smb1.server.readbraw = server_readbraw;
+ conn->smb1.server.writebraw = server_writebraw;
+ conn->smb1.server.lockread = server_lockread;
+ conn->smb1.server.writeunlock = server_writeunlock;
+
+ conn->smb1.server.session_key = server_session_key;
+
+ talloc_steal(conn, server_gss_blob.data);
+ conn->smb1.server.gss_blob = server_gss_blob;
+ conn->smb1.server.guid = server_guid;
+ memcpy(conn->smb1.server.challenge, server_challenge, 8);
+ conn->smb1.server.workgroup = talloc_move(conn, &server_workgroup);
+ conn->smb1.server.name = talloc_move(conn, &server_name);
+
+ conn->smb1.server.time_zone = server_time_zone;
+ conn->smb1.server.system_time = server_system_time;
+
+ tevent_req_done(req);
+}
+
+static struct tevent_req *smbXcli_negprot_smb2_subreq(struct smbXcli_negprot_state *state)
+{
+ size_t i;
+ uint8_t *buf;
+ uint16_t dialect_count = 0;
+
+ buf = state->smb2.dyn;
+ for (i=0; i < ARRAY_SIZE(smb2cli_prots); i++) {
+ if (smb2cli_prots[i].proto < state->min_protocol) {
+ continue;
+ }
+
+ if (smb2cli_prots[i].proto > state->max_protocol) {
+ continue;
+ }
+
+ SSVAL(buf, dialect_count*2, smb2cli_prots[i].smb2_dialect);
+ dialect_count++;
+ }
+
+ buf = state->smb2.fixed;
+ SSVAL(buf, 0, 36);
+ SSVAL(buf, 2, dialect_count);
+ SSVAL(buf, 4, state->conn->smb2.client.security_mode);
+ SSVAL(buf, 6, 0); /* Reserved */
+ if (state->max_protocol >= PROTOCOL_SMB2_22) {
+ SIVAL(buf, 8, state->conn->smb2.client.capabilities);
+ } else {
+ SIVAL(buf, 8, 0); /* Capabilities */
+ }
+ if (state->max_protocol >= PROTOCOL_SMB2_10) {
+ NTSTATUS status;
+ DATA_BLOB blob;
+
+ status = GUID_to_ndr_blob(&state->conn->smb2.client.guid,
+ state, &blob);
+ if (!NT_STATUS_IS_OK(status)) {
+ return NULL;
+ }
+ memcpy(buf+12, blob.data, 16); /* ClientGuid */
+ } else {
+ memset(buf+12, 0, 16); /* ClientGuid */
+ }
+ SBVAL(buf, 28, 0); /* ClientStartTime */
+
+ return smb2cli_req_send(state, state->ev,
+ state->conn, SMB2_OP_NEGPROT,
+ 0, 0, /* flags */
+ state->timeout_msec,
+ 0xFEFF, 0, NULL, /* pid, tid, session */
+ state->smb2.fixed, sizeof(state->smb2.fixed),
+ state->smb2.dyn, dialect_count*2);
+}
+
+static void smbXcli_negprot_smb2_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req =
+ tevent_req_callback_data(subreq,
+ struct tevent_req);
+ struct smbXcli_negprot_state *state =
+ tevent_req_data(req,
+ struct smbXcli_negprot_state);
+ struct smbXcli_conn *conn = state->conn;
+ size_t security_offset, security_length;
+ DATA_BLOB blob;
+ NTSTATUS status;
+ struct iovec *iov;
+ uint8_t *body;
+ size_t i;
+ uint16_t dialect_revision;
+ static const struct smb2cli_req_expected_response expected[] = {
+ {
+ .status = NT_STATUS_OK,
+ .body_size = 0x41
+ }
+ };
+
+ status = smb2cli_req_recv(subreq, state, &iov,
+ expected, ARRAY_SIZE(expected));
+ TALLOC_FREE(subreq);
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+
+ body = (uint8_t *)iov[1].iov_base;
+
+ dialect_revision = SVAL(body, 4);
+
+ for (i=0; i < ARRAY_SIZE(smb2cli_prots); i++) {
+ if (smb2cli_prots[i].proto < state->min_protocol) {
+ continue;
+ }
+
+ if (smb2cli_prots[i].proto > state->max_protocol) {
+ continue;
+ }
+
+ if (smb2cli_prots[i].smb2_dialect != dialect_revision) {
+ continue;
+ }
+
+ conn->protocol = smb2cli_prots[i].proto;
+ break;
+ }
+
+ if (conn->protocol == PROTOCOL_NONE) {
+ if (state->min_protocol >= PROTOCOL_SMB2_02) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+ return;
+ }
+
+ if (dialect_revision != SMB2_DIALECT_REVISION_2FF) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+ return;
+ }
+
+ /* make sure we do not loop forever */
+ state->min_protocol = PROTOCOL_SMB2_02;
+
+ /*
+ * send a SMB2 negprot, in order to negotiate
+ * the SMB2 dialect.
+ */
+ subreq = smbXcli_negprot_smb2_subreq(state);
+ if (tevent_req_nomem(subreq, req)) {
+ return;
+ }
+ tevent_req_set_callback(subreq, smbXcli_negprot_smb2_done, req);
+ return;
+ }
+
+ conn->smb2.server.security_mode = SVAL(body, 2);
+
+ blob = data_blob_const(body + 8, 16);
+ status = GUID_from_data_blob(&blob, &conn->smb2.server.guid);
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+
+ conn->smb2.server.capabilities = IVAL(body, 24);
+ conn->smb2.server.max_trans_size= IVAL(body, 28);
+ conn->smb2.server.max_read_size = IVAL(body, 32);
+ conn->smb2.server.max_write_size= IVAL(body, 36);
+ conn->smb2.server.system_time = BVAL(body, 40);
+ conn->smb2.server.start_time = BVAL(body, 48);
+
+ security_offset = SVAL(body, 56);
+ security_length = SVAL(body, 58);
+
+ if (security_offset != SMB2_HDR_BODY + iov[1].iov_len) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+ return;
+ }
+
+ if (security_length > iov[2].iov_len) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+ return;
+ }
+
+ conn->smb2.server.gss_blob = data_blob_talloc(conn,
+ iov[2].iov_base,
+ security_length);
+ if (tevent_req_nomem(conn->smb2.server.gss_blob.data, req)) {
+ return;
+ }
+
+ tevent_req_done(req);
+}
+
+static NTSTATUS smbXcli_negprot_dispatch_incoming(struct smbXcli_conn *conn,
+ TALLOC_CTX *tmp_mem,
+ uint8_t *inbuf)
+{
+ size_t num_pending = talloc_array_length(conn->pending);
+ struct tevent_req *subreq;
+ struct smbXcli_req_state *substate;
+ struct tevent_req *req;
+ uint32_t protocol_magic = IVAL(inbuf, 4);
+
+ if (num_pending != 1) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ subreq = conn->pending[0];
+ substate = tevent_req_data(subreq, struct smbXcli_req_state);
+ req = tevent_req_callback_data(subreq, struct tevent_req);
+
+ switch (protocol_magic) {
+ case SMB_MAGIC:
+ tevent_req_set_callback(subreq, smbXcli_negprot_smb1_done, req);
+ conn->dispatch_incoming = smb1cli_conn_dispatch_incoming;
+ return smb1cli_conn_dispatch_incoming(conn, tmp_mem, inbuf);
+
+ case SMB2_MAGIC:
+ if (substate->smb2.recv_iov == NULL) {
+ /*
+ * For the SMB1 negprot we have move it.
+ */
+ substate->smb2.recv_iov = substate->smb1.recv_iov;
+ substate->smb1.recv_iov = NULL;
+ }
+
+ /*
+ * we got an SMB2 answer, which consumed sequence number 0
+ * so we need to use 1 as the next one
+ */
+ conn->smb2.mid = 1;
+ tevent_req_set_callback(subreq, smbXcli_negprot_smb2_done, req);
+ conn->dispatch_incoming = smb2cli_conn_dispatch_incoming;
+ return smb2cli_conn_dispatch_incoming(conn, tmp_mem, inbuf);
+ }
+
+ DEBUG(10, ("Got non-SMB PDU\n"));
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+}
+
+NTSTATUS smbXcli_negprot_recv(struct tevent_req *req)
+{
+ return tevent_req_simple_recv_ntstatus(req);
+}
+
+NTSTATUS smbXcli_negprot(struct smbXcli_conn *conn,
+ uint32_t timeout_msec,
+ enum protocol_types min_protocol,
+ enum protocol_types max_protocol)
+{
+ TALLOC_CTX *frame = talloc_stackframe();
+ struct tevent_context *ev;
+ struct tevent_req *req;
+ NTSTATUS status = NT_STATUS_NO_MEMORY;
+ bool ok;
+
+ if (smbXcli_conn_has_async_calls(conn)) {
+ /*
+ * Can't use sync call while an async call is in flight
+ */
+ status = NT_STATUS_INVALID_PARAMETER_MIX;
+ goto fail;
+ }
+ ev = tevent_context_init(frame);
+ if (ev == NULL) {
+ goto fail;
+ }
+ req = smbXcli_negprot_send(frame, ev, conn, timeout_msec,
+ min_protocol, max_protocol);
+ if (req == NULL) {
+ goto fail;
+ }
+ ok = tevent_req_poll(req, ev);
+ if (!ok) {
+ status = map_nt_error_from_unix_common(errno);
+ goto fail;
+ }
+ status = smbXcli_negprot_recv(req);
+ fail:
+ TALLOC_FREE(frame);
+ return status;
+}
+
+static int smbXcli_session_destructor(struct smbXcli_session *session)
+{
+ if (session->conn == NULL) {
+ return 0;
+ }
+
+ DLIST_REMOVE(session->conn->sessions, session);
+ return 0;
+}
+
+struct smbXcli_session *smbXcli_session_create(TALLOC_CTX *mem_ctx,
+ struct smbXcli_conn *conn)
+{
+ struct smbXcli_session *session;
+
+ session = talloc_zero(mem_ctx, struct smbXcli_session);
+ if (session == NULL) {
+ return NULL;
+ }
+ talloc_set_destructor(session, smbXcli_session_destructor);
+
+ DLIST_ADD_END(conn->sessions, session, struct smbXcli_session *);
+ session->conn = conn;
+
+ return session;
+}
+
+uint8_t smb2cli_session_security_mode(struct smbXcli_session *session)
+{
+ struct smbXcli_conn *conn = session->conn;
+ uint8_t security_mode = 0;
+
+ if (conn == NULL) {
+ return security_mode;
+ }
+
+ security_mode = SMB2_NEGOTIATE_SIGNING_ENABLED;
+ if (conn->mandatory_signing) {
+ security_mode |= SMB2_NEGOTIATE_SIGNING_REQUIRED;
+ }
+
+ return security_mode;
+}
+
+uint64_t smb2cli_session_current_id(struct smbXcli_session *session)
+{
+ return session->smb2.session_id;
+}
+
+uint16_t smb2cli_session_get_flags(struct smbXcli_session *session)
+{
+ return session->smb2.session_flags;
+}
+
+NTSTATUS smb2cli_session_application_key(struct smbXcli_session *session,
+ TALLOC_CTX *mem_ctx,
+ DATA_BLOB *key)
+{
+ *key = data_blob_null;
+
+ if (session->smb2.application_key.length == 0) {
+ return NT_STATUS_NO_USER_SESSION_KEY;
+ }
+
+ *key = data_blob_dup_talloc(mem_ctx, session->smb2.application_key);
+ if (key->data == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ return NT_STATUS_OK;
+}
+
+void smb2cli_session_set_id_and_flags(struct smbXcli_session *session,
+ uint64_t session_id,
+ uint16_t session_flags)
+{
+ session->smb2.session_id = session_id;
+ session->smb2.session_flags = session_flags;
+}
+
+NTSTATUS smb2cli_session_set_session_key(struct smbXcli_session *session,
+ const DATA_BLOB _session_key,
+ const struct iovec *recv_iov)
+{
+ struct smbXcli_conn *conn = session->conn;
+ uint16_t no_sign_flags;
+ uint8_t session_key[16];
+ NTSTATUS status;
+
+ if (conn == NULL) {
+ return NT_STATUS_INVALID_PARAMETER_MIX;
+ }
+
+ no_sign_flags = SMB2_SESSION_FLAG_IS_GUEST | SMB2_SESSION_FLAG_IS_NULL;
+
+ if (session->smb2.session_flags & no_sign_flags) {
+ session->smb2.should_sign = false;
+ return NT_STATUS_OK;
+ }
+
+ if (session->smb2.signing_key.length != 0) {
+ return NT_STATUS_INVALID_PARAMETER_MIX;
+ }
+
+ ZERO_STRUCT(session_key);
+ memcpy(session_key, _session_key.data,
+ MIN(_session_key.length, sizeof(session_key)));
+
+ session->smb2.signing_key = data_blob_talloc(session,
+ session_key,
+ sizeof(session_key));
+ if (session->smb2.signing_key.data == NULL) {
+ ZERO_STRUCT(session_key);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (conn->protocol >= PROTOCOL_SMB2_24) {
+ const DATA_BLOB label = data_blob_string_const_null("SMB2AESCMAC");
+ const DATA_BLOB context = data_blob_string_const_null("SmbSign");
+
+ smb2_key_derivation(session_key, sizeof(session_key),
+ label.data, label.length,
+ context.data, context.length,
+ session->smb2.signing_key.data);
+ }
+
+ session->smb2.application_key = data_blob_dup_talloc(session,
+ session->smb2.signing_key);
+ if (session->smb2.application_key.data == NULL) {
+ ZERO_STRUCT(session_key);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (conn->protocol >= PROTOCOL_SMB2_24) {
+ const DATA_BLOB label = data_blob_string_const_null("SMB2APP");
+ const DATA_BLOB context = data_blob_string_const_null("SmbRpc");
+
+ smb2_key_derivation(session_key, sizeof(session_key),
+ label.data, label.length,
+ context.data, context.length,
+ session->smb2.application_key.data);
+ }
+ ZERO_STRUCT(session_key);
+
+ session->smb2.channel_signing_key = data_blob_dup_talloc(session,
+ session->smb2.signing_key);
+ if (session->smb2.channel_signing_key.data == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ status = smb2_signing_check_pdu(session->smb2.channel_signing_key,
+ session->conn->protocol,
+ recv_iov, 3);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ session->smb2.should_sign = false;
+
+ if (conn->desire_signing) {
+ session->smb2.should_sign = true;
+ }
+
+ if (conn->smb2.server.security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) {
+ session->smb2.should_sign = true;
+ }
+
+ return NT_STATUS_OK;
+}
+
+NTSTATUS smb2cli_session_create_channel(TALLOC_CTX *mem_ctx,
+ struct smbXcli_session *session1,
+ struct smbXcli_conn *conn,
+ struct smbXcli_session **_session2)
+{
+ struct smbXcli_session *session2;
+
+ if (session1->smb2.signing_key.length == 0) {
+ return NT_STATUS_INVALID_PARAMETER_MIX;
+ }
+
+ if (conn == NULL) {
+ return NT_STATUS_INVALID_PARAMETER_MIX;
+ }
+
+ session2 = talloc_zero(mem_ctx, struct smbXcli_session);
+ if (session2 == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ session2->smb2.session_id = session1->smb2.session_id;
+ session2->smb2.session_flags = session1->smb2.session_flags;
+
+ session2->smb2.signing_key = data_blob_dup_talloc(session2,
+ session1->smb2.signing_key);
+ if (session2->smb2.signing_key.data == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ session2->smb2.should_sign = session1->smb2.should_sign;
+
+ talloc_set_destructor(session2, smbXcli_session_destructor);
+ DLIST_ADD_END(conn->sessions, session2, struct smbXcli_session *);
+ session2->conn = conn;
+
+ *_session2 = session2;
+ return NT_STATUS_OK;
+}
+
+NTSTATUS smb2cli_session_set_channel_key(struct smbXcli_session *session,
+ const DATA_BLOB _channel_key,
+ const struct iovec *recv_iov)
+{
+ struct smbXcli_conn *conn = session->conn;
+ uint8_t channel_key[16];
+ NTSTATUS status;
+
+ if (conn == NULL) {
+ return NT_STATUS_INVALID_PARAMETER_MIX;
+ }
+
+ if (session->smb2.channel_signing_key.length != 0) {
+ return NT_STATUS_INVALID_PARAMETER_MIX;
+ }
+
+ ZERO_STRUCT(channel_key);
+ memcpy(channel_key, _channel_key.data,
+ MIN(_channel_key.length, sizeof(channel_key)));
+
+ session->smb2.channel_signing_key = data_blob_talloc(session,
+ channel_key,
+ sizeof(channel_key));
+ if (session->smb2.channel_signing_key.data == NULL) {
+ ZERO_STRUCT(channel_key);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (conn->protocol >= PROTOCOL_SMB2_24) {
+ const DATA_BLOB label = data_blob_string_const_null("SMB2AESCMAC");
+ const DATA_BLOB context = data_blob_string_const_null("SmbSign");
+
+ smb2_key_derivation(channel_key, sizeof(channel_key),
+ label.data, label.length,
+ context.data, context.length,
+ session->smb2.channel_signing_key.data);
+ }
+ ZERO_STRUCT(channel_key);
+
+ status = smb2_signing_check_pdu(session->smb2.channel_signing_key,
+ session->conn->protocol,
+ recv_iov, 3);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ return NT_STATUS_OK;
}