2 Unix SMB/CIFS implementation.
3 SMB client generic functions
4 Copyright (C) Andrew Tridgell 1994-1998
5 Copyright (C) Jeremy Allison 2007.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #include "libsmb/libsmb.h"
23 #include "../lib/util/tevent_ntstatus.h"
24 #include "../libcli/smb/smb_signing.h"
25 #include "../libcli/smb/smb_seal.h"
26 #include "async_smb.h"
27 #include "../libcli/smb/smbXcli_base.h"
28 #include "../librpc/ndr/libndr.h"
29 #include "../include/client.h"
31 /*******************************************************************
32 Setup the word count and byte count for a client smb message.
33 ********************************************************************/
35 int cli_set_message(char *buf,int num_words,int num_bytes,bool zero)
37 if (zero && (num_words || num_bytes)) {
38 memset(buf + smb_size,'\0',num_words*2 + num_bytes);
40 SCVAL(buf,smb_wct,num_words);
41 SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
42 smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
43 return (smb_size + num_words*2 + num_bytes);
46 /****************************************************************************
47 Change the timeout (in milliseconds).
48 ****************************************************************************/
50 unsigned int cli_set_timeout(struct cli_state *cli, unsigned int timeout)
52 unsigned int old_timeout = cli->timeout;
53 cli->timeout = timeout;
57 /****************************************************************************
58 Set the 'backup_intent' flag.
59 ****************************************************************************/
61 bool cli_set_backup_intent(struct cli_state *cli, bool flag)
63 bool old_state = cli->backup_intent;
64 cli->backup_intent = flag;
68 /****************************************************************************
69 Initialize Domain, user or password.
70 ****************************************************************************/
72 NTSTATUS cli_set_domain(struct cli_state *cli, const char *domain)
74 TALLOC_FREE(cli->domain);
75 cli->domain = talloc_strdup(cli, domain ? domain : "");
76 if (cli->domain == NULL) {
77 return NT_STATUS_NO_MEMORY;
82 NTSTATUS cli_set_username(struct cli_state *cli, const char *username)
84 TALLOC_FREE(cli->user_name);
85 cli->user_name = talloc_strdup(cli, username ? username : "");
86 if (cli->user_name == NULL) {
87 return NT_STATUS_NO_MEMORY;
92 NTSTATUS cli_set_password(struct cli_state *cli, const char *password)
94 TALLOC_FREE(cli->password);
96 /* Password can be NULL. */
98 cli->password = talloc_strdup(cli, password);
99 if (cli->password == NULL) {
100 return NT_STATUS_NO_MEMORY;
103 /* Use zero NTLMSSP hashes and session key. */
104 cli->password = NULL;
110 /****************************************************************************
111 Initialise credentials of a client structure.
112 ****************************************************************************/
114 NTSTATUS cli_init_creds(struct cli_state *cli, const char *username, const char *domain, const char *password)
116 NTSTATUS status = cli_set_username(cli, username);
117 if (!NT_STATUS_IS_OK(status)) {
120 status = cli_set_domain(cli, domain);
121 if (!NT_STATUS_IS_OK(status)) {
124 DEBUG(10,("cli_init_creds: user %s domain %s\n", cli->user_name, cli->domain));
126 return cli_set_password(cli, password);
129 /****************************************************************************
130 Initialise a client structure. Always returns a talloc'ed struct.
131 Set the signing state (used from the command line).
132 ****************************************************************************/
134 struct GUID cli_state_client_guid;
136 struct cli_state *cli_state_create(TALLOC_CTX *mem_ctx,
138 const char *remote_name,
139 const char *remote_realm,
140 int signing_state, int flags)
142 struct cli_state *cli = NULL;
143 bool use_spnego = lp_client_use_spnego();
144 bool force_dos_errors = false;
145 bool force_ascii = false;
146 bool use_level_II_oplocks = false;
147 uint32_t smb1_capabilities = 0;
148 uint32_t smb2_capabilities = 0;
149 struct GUID client_guid;
151 if (!GUID_all_zero(&cli_state_client_guid)) {
152 client_guid = cli_state_client_guid;
154 client_guid = GUID_random();
157 /* Check the effective uid - make sure we are not setuid */
158 if (is_setuid_root()) {
159 DEBUG(0,("libsmb based programs must *NOT* be setuid root.\n"));
163 cli = talloc_zero(mem_ctx, struct cli_state);
168 cli->server_domain = talloc_strdup(cli, "");
169 if (!cli->server_domain) {
172 cli->server_os = talloc_strdup(cli, "");
173 if (!cli->server_os) {
176 cli->server_type = talloc_strdup(cli, "");
177 if (!cli->server_type) {
181 cli->dfs_mountpoint = talloc_strdup(cli, "");
182 if (!cli->dfs_mountpoint) {
185 cli->raw_status = NT_STATUS_INTERNAL_ERROR;
186 cli->map_dos_errors = true; /* remove this */
187 cli->timeout = CLIENT_TIMEOUT;
189 /* Set the CLI_FORCE_DOSERR environment variable to test
190 client routines using DOS errors instead of STATUS32
191 ones. This intended only as a temporary hack. */
192 if (getenv("CLI_FORCE_DOSERR")) {
193 force_dos_errors = true;
195 if (flags & CLI_FULL_CONNECTION_FORCE_DOS_ERRORS) {
196 force_dos_errors = true;
199 if (getenv("CLI_FORCE_ASCII")) {
205 if (flags & CLI_FULL_CONNECTION_FORCE_ASCII) {
209 if (flags & CLI_FULL_CONNECTION_DONT_SPNEGO) {
211 } else if (flags & CLI_FULL_CONNECTION_USE_KERBEROS) {
212 cli->use_kerberos = true;
214 if ((flags & CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS) &&
216 cli->fallback_after_kerberos = true;
219 if (flags & CLI_FULL_CONNECTION_USE_CCACHE) {
220 cli->use_ccache = true;
223 if (flags & CLI_FULL_CONNECTION_USE_NT_HASH) {
224 cli->pw_nt_hash = true;
227 if (flags & CLI_FULL_CONNECTION_OPLOCKS) {
228 cli->use_oplocks = true;
230 if (flags & CLI_FULL_CONNECTION_LEVEL_II_OPLOCKS) {
231 use_level_II_oplocks = true;
234 if (signing_state == SMB_SIGNING_DEFAULT) {
235 signing_state = lp_client_signing();
238 smb1_capabilities = 0;
239 smb1_capabilities |= CAP_LARGE_FILES;
240 smb1_capabilities |= CAP_NT_SMBS | CAP_RPC_REMOTE_APIS;
241 smb1_capabilities |= CAP_LOCK_AND_READ | CAP_NT_FIND;
242 smb1_capabilities |= CAP_DFS | CAP_W2K_SMBS;
243 smb1_capabilities |= CAP_LARGE_READX|CAP_LARGE_WRITEX;
244 smb1_capabilities |= CAP_LWIO;
246 if (!force_dos_errors) {
247 smb1_capabilities |= CAP_STATUS32;
251 smb1_capabilities |= CAP_UNICODE;
255 smb1_capabilities |= CAP_EXTENDED_SECURITY;
258 if (use_level_II_oplocks) {
259 smb1_capabilities |= CAP_LEVEL_II_OPLOCKS;
262 smb2_capabilities = SMB2_CAP_ALL;
265 cli->remote_realm = talloc_strdup(cli, remote_realm);
266 if (cli->remote_realm == NULL) {
271 cli->conn = smbXcli_conn_create(cli, fd, remote_name,
276 if (cli->conn == NULL) {
280 cli->smb1.pid = (uint16_t)getpid();
281 cli->smb1.vc_num = cli->smb1.pid;
282 cli->smb1.tcon = smbXcli_tcon_create(cli);
283 if (cli->smb1.tcon == NULL) {
286 smb1cli_tcon_set_id(cli->smb1.tcon, UINT16_MAX);
287 cli->smb1.session = smbXcli_session_create(cli, cli->conn);
288 if (cli->smb1.session == NULL) {
292 cli->initialised = 1;
295 /* Clean up after malloc() error */
303 /****************************************************************************
304 Close all pipes open on this session.
305 ****************************************************************************/
307 void cli_nt_pipes_close(struct cli_state *cli)
309 while (cli->pipe_list != NULL) {
311 * No TALLOC_FREE here!
313 talloc_free(cli->pipe_list);
317 /****************************************************************************
318 Shutdown a client structure.
319 ****************************************************************************/
321 static void _cli_shutdown(struct cli_state *cli)
323 cli_nt_pipes_close(cli);
326 * tell our peer to free his resources. Wihtout this, when an
327 * application attempts to do a graceful shutdown and calls
328 * smbc_free_context() to clean up all connections, some connections
329 * can remain active on the peer end, until some (long) timeout period
330 * later. This tree disconnect forces the peer to clean up, since the
331 * connection will be going away.
333 if (cli_state_has_tcon(cli)) {
337 smbXcli_conn_disconnect(cli->conn, NT_STATUS_OK);
342 void cli_shutdown(struct cli_state *cli)
344 struct cli_state *cli_head;
348 DLIST_HEAD(cli, cli_head);
349 if (cli_head == cli) {
351 * head of a DFS list, shutdown all subsidiary DFS
354 struct cli_state *p, *next;
356 for (p = cli_head->next; p; p = next) {
358 DLIST_REMOVE(cli_head, p);
362 DLIST_REMOVE(cli_head, cli);
368 const char *cli_state_remote_realm(struct cli_state *cli)
370 return cli->remote_realm;
373 uint16_t cli_state_get_vc_num(struct cli_state *cli)
375 return cli->smb1.vc_num;
378 /****************************************************************************
379 Set the PID to use for smb messages. Return the old pid.
380 ****************************************************************************/
382 uint16 cli_setpid(struct cli_state *cli, uint16 pid)
384 uint16_t ret = cli->smb1.pid;
389 uint16_t cli_getpid(struct cli_state *cli)
391 return cli->smb1.pid;
394 bool cli_state_has_tcon(struct cli_state *cli)
396 uint16_t tid = cli_state_get_tid(cli);
398 if (tid == UINT16_MAX) {
405 uint16_t cli_state_get_tid(struct cli_state *cli)
407 return smb1cli_tcon_current_id(cli->smb1.tcon);
410 uint16_t cli_state_set_tid(struct cli_state *cli, uint16_t tid)
412 uint16_t ret = smb1cli_tcon_current_id(cli->smb1.tcon);
413 smb1cli_tcon_set_id(cli->smb1.tcon, tid);
417 uint16_t cli_state_get_uid(struct cli_state *cli)
419 return smb1cli_session_current_id(cli->smb1.session);
422 uint16_t cli_state_set_uid(struct cli_state *cli, uint16_t uid)
424 uint16_t ret = smb1cli_session_current_id(cli->smb1.session);
425 smb1cli_session_set_id(cli->smb1.session, uid);
429 /****************************************************************************
430 Set the case sensitivity flag on the packets. Returns old state.
431 ****************************************************************************/
433 bool cli_set_case_sensitive(struct cli_state *cli, bool case_sensitive)
437 struct smbXcli_tcon *tcon;
439 if (smbXcli_conn_protocol(cli->conn) >= PROTOCOL_SMB2_02) {
440 tcon = cli->smb2.tcon;
442 tcon = cli->smb1.tcon;
445 fs_attrs = smbXcli_tcon_get_fs_attributes(tcon);
446 if (fs_attrs & FILE_CASE_SENSITIVE_SEARCH) {
451 if (case_sensitive) {
452 fs_attrs |= FILE_CASE_SENSITIVE_SEARCH;
454 fs_attrs &= ~FILE_CASE_SENSITIVE_SEARCH;
456 smbXcli_tcon_set_fs_attributes(tcon, fs_attrs);
461 uint32_t cli_state_available_size(struct cli_state *cli, uint32_t ofs)
463 uint32_t ret = smb1cli_conn_max_xmit(cli->conn);
474 time_t cli_state_server_time(struct cli_state *cli)
479 nt = smbXcli_conn_server_system_time(cli->conn);
480 t = nt_time_to_unix(nt);
485 struct cli_echo_state {
489 static void cli_echo_done(struct tevent_req *subreq);
491 struct tevent_req *cli_echo_send(TALLOC_CTX *mem_ctx, struct tevent_context *ev,
492 struct cli_state *cli, uint16_t num_echos,
495 struct tevent_req *req, *subreq;
496 struct cli_echo_state *state;
498 req = tevent_req_create(mem_ctx, &state, struct cli_echo_state);
503 if (smbXcli_conn_protocol(cli->conn) >= PROTOCOL_SMB2_02) {
504 state->is_smb2 = true;
505 subreq = smb2cli_echo_send(state, ev,
509 subreq = smb1cli_echo_send(state, ev,
515 if (tevent_req_nomem(subreq, req)) {
516 return tevent_req_post(req, ev);
518 tevent_req_set_callback(subreq, cli_echo_done, req);
523 static void cli_echo_done(struct tevent_req *subreq)
525 struct tevent_req *req = tevent_req_callback_data(
526 subreq, struct tevent_req);
527 struct cli_echo_state *state = tevent_req_data(
528 req, struct cli_echo_state);
531 if (state->is_smb2) {
532 status = smb2cli_echo_recv(subreq);
534 status = smb1cli_echo_recv(subreq);
537 if (!NT_STATUS_IS_OK(status)) {
538 tevent_req_nterror(req, status);
542 tevent_req_done(req);
546 * Get the result out from an echo request
547 * @param[in] req The async_req from cli_echo_send
548 * @retval Did the server reply correctly?
551 NTSTATUS cli_echo_recv(struct tevent_req *req)
553 return tevent_req_simple_recv_ntstatus(req);
557 * @brief Send/Receive SMBEcho requests
558 * @param[in] mem_ctx The memory context to put the async_req on
559 * @param[in] ev The event context that will call us back
560 * @param[in] cli The connection to send the echo to
561 * @param[in] num_echos How many times do we want to get the reply?
562 * @param[in] data The data we want to get back
563 * @retval Did the server reply correctly?
566 NTSTATUS cli_echo(struct cli_state *cli, uint16_t num_echos, DATA_BLOB data)
568 TALLOC_CTX *frame = talloc_stackframe();
569 struct tevent_context *ev;
570 struct tevent_req *req;
571 NTSTATUS status = NT_STATUS_OK;
573 if (smbXcli_conn_has_async_calls(cli->conn)) {
575 * Can't use sync call while an async call is in flight
577 status = NT_STATUS_INVALID_PARAMETER;
581 ev = samba_tevent_context_init(frame);
583 status = NT_STATUS_NO_MEMORY;
587 req = cli_echo_send(frame, ev, cli, num_echos, data);
589 status = NT_STATUS_NO_MEMORY;
593 if (!tevent_req_poll(req, ev)) {
594 status = map_nt_error_from_unix(errno);
598 status = cli_echo_recv(req);
605 * Is the SMB command able to hold an AND_X successor
606 * @param[in] cmd The SMB command in question
607 * @retval Can we add a chained request after "cmd"?
609 bool is_andx_req(uint8_t cmd)
629 NTSTATUS cli_smb(TALLOC_CTX *mem_ctx, struct cli_state *cli,
630 uint8_t smb_command, uint8_t additional_flags,
631 uint8_t wct, uint16_t *vwv,
632 uint32_t num_bytes, const uint8_t *bytes,
633 struct tevent_req **result_parent,
634 uint8_t min_wct, uint8_t *pwct, uint16_t **pvwv,
635 uint32_t *pnum_bytes, uint8_t **pbytes)
637 struct tevent_context *ev;
638 struct tevent_req *req = NULL;
639 NTSTATUS status = NT_STATUS_NO_MEMORY;
641 if (smbXcli_conn_has_async_calls(cli->conn)) {
642 return NT_STATUS_INVALID_PARAMETER;
644 ev = samba_tevent_context_init(mem_ctx);
648 req = cli_smb_send(mem_ctx, ev, cli, smb_command, additional_flags,
649 wct, vwv, num_bytes, bytes);
653 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
656 status = cli_smb_recv(req, NULL, NULL, min_wct, pwct, pvwv,
660 if (NT_STATUS_IS_OK(status) && (result_parent != NULL)) {
661 *result_parent = req;