2 Test the SMB_WHOAMI Unix extension.
4 Copyright (C) 2007 James Peach
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 #include "libcli/libcli.h"
22 #include "libcli/raw/raw_proto.h"
23 #include "torture/torture.h"
24 #include "torture/unix/proto.h"
25 #include "lib/cmdline/popt_common.h"
26 #include "auth/credentials/credentials.h"
27 #include "param/param.h"
28 #include "libcli/resolve/resolve.h"
30 #include "lib/util/util_ldb.h"
32 #include "dsdb/samdb/samdb.h"
33 #include "../libcli/security/security.h"
36 /* Size (in bytes) of the required fields in the SMBwhoami response. */
37 #define WHOAMI_REQUIRED_SIZE 40
40 SMBWhoami - Query the user mapping performed by the server for the
41 connected tree. This is a subcommand of the TRANS2_QFSINFO.
44 4 bytes unsigned - mapping flags (smb_whoami_flags)
45 4 bytes unsigned - flags mask
47 8 bytes unsigned - primary UID
48 8 bytes unsigned - primary GID
49 4 bytes unsigned - number of supplementary GIDs
50 4 bytes unsigned - number of SIDs
51 4 bytes unsigned - SID list byte count
52 4 bytes - pad / reserved (must be zero)
54 8 bytes unsigned[] - list of GIDs (may be empty)
55 struct dom_sid[] - list of SIDs (may be empty)
60 uint32_t mapping_flags;
61 uint32_t mapping_mask;
66 uint32_t num_sid_bytes;
67 uint32_t reserved; /* Must be zero */
69 struct dom_sid ** sid_list;
72 static struct smbcli_state *connect_to_server(struct torture_context *tctx,
73 struct cli_credentials *creds)
76 struct smbcli_state *cli;
78 const char *host = torture_setting_string(tctx, "host", NULL);
79 const char *share = torture_setting_string(tctx, "share", NULL);
80 struct smbcli_options options;
81 struct smbcli_session_options session_options;
83 lpcfg_smbcli_options(tctx->lp_ctx, &options);
84 lpcfg_smbcli_session_options(tctx->lp_ctx, &session_options);
86 status = smbcli_full_connection(tctx, &cli, host,
87 lpcfg_smb_ports(tctx->lp_ctx),
88 share, NULL, lpcfg_socket_options(tctx->lp_ctx),
89 creds, lpcfg_resolve_context(tctx->lp_ctx),
90 tctx->ev, &options, &session_options,
91 lpcfg_gensec_settings(tctx, tctx->lp_ctx));
93 if (!NT_STATUS_IS_OK(status)) {
95 "FATAL: Failed to connect to //%s/%s "
99 cli_credentials_get_username(creds),
107 static bool whoami_sid_parse(void *mem_ctx,
108 struct torture_context *torture,
109 DATA_BLOB *data, size_t *offset,
110 struct dom_sid **psid)
112 size_t remain = data->length - *offset;
115 *psid = talloc_zero(mem_ctx, struct dom_sid);
116 torture_assert(torture, *psid != NULL, "out of memory");
118 torture_assert(torture, remain >= 8,
119 "invalid SID format");
121 (*psid)->sid_rev_num = CVAL(data->data, *offset);
122 (*psid)->num_auths = CVAL(data->data, *offset + 1);
123 memcpy((*psid)->id_auth, data->data + *offset + 2, 6);
126 remain = data->length - *offset;
128 torture_assert(torture, remain >= ((*psid)->num_auths * 4),
129 "invalid sub_auth byte count");
130 torture_assert(torture, (*psid)->num_auths >= 0,
131 "invalid sub_auth value");
132 torture_assert(torture, (*psid)->num_auths <= 15,
133 "invalid sub_auth value");
135 for (i = 0; i < (*psid)->num_auths; i++) {
136 (*psid)->sub_auths[i] = IVAL(data->data, *offset);
143 static bool smb_raw_query_posix_whoami(void *mem_ctx,
144 struct torture_context *torture,
145 struct smbcli_state *cli,
146 struct smb_whoami *whoami,
149 struct smb_trans2 tp;
154 uint16_t setup = TRANSACT2_QFSINFO;
157 ZERO_STRUCTP(whoami);
162 tp.in.setup_count = 1;
163 tp.in.max_param = 10;
164 tp.in.max_data = (uint16_t)max_data;
165 tp.in.setup = &setup;
166 tp.in.trans_name = NULL;
167 SSVAL(&info_level, 0, SMB_QFS_POSIX_WHOAMI);
168 tp.in.params = data_blob_talloc(mem_ctx, &info_level, 2);
169 tp.in.data = data_blob_talloc(mem_ctx, NULL, 0);
171 status = smb_raw_trans2(cli->tree, mem_ctx, &tp);
172 torture_assert_ntstatus_equal(torture, status, NT_STATUS_OK,
173 "doing SMB_QFS_POSIX_WHOAMI");
175 /* Make sure we got back all the required fields. */
176 torture_assert(torture, tp.out.params.length == 0,
177 "trans2 params should be empty");
178 torture_assert(torture, tp.out.data.length >= WHOAMI_REQUIRED_SIZE,
179 "checking for required response fields");
181 whoami->mapping_flags = IVAL(tp.out.data.data, 0);
182 whoami->mapping_mask = IVAL(tp.out.data.data, 4);
183 whoami->server_uid = BVAL(tp.out.data.data, 8);
184 whoami->server_gid = BVAL(tp.out.data.data, 16);
185 whoami->num_gids = IVAL(tp.out.data.data, 24);
186 whoami->num_sids = IVAL(tp.out.data.data, 28);
187 whoami->num_sid_bytes = IVAL(tp.out.data.data, 32);
188 whoami->reserved = IVAL(tp.out.data.data, 36);
190 /* The GID list and SID list are optional, depending on the count
193 if (whoami->num_sids != 0) {
194 torture_assert(torture, whoami->num_sid_bytes != 0,
195 "SID count does not match byte count");
198 printf("\tmapping_flags=0x%08x mapping_mask=0x%08x\n",
199 whoami->mapping_flags, whoami->mapping_mask);
200 printf("\tserver UID=%llu GID=%llu\n",
201 (unsigned long long)whoami->server_uid, (unsigned long long)whoami->server_gid);
202 printf("\t%u GIDs, %u SIDs, %u SID bytes\n",
203 whoami->num_gids, whoami->num_sids,
204 whoami->num_sid_bytes);
206 offset = WHOAMI_REQUIRED_SIZE;
208 torture_assert_int_equal(torture, whoami->reserved, 0,
209 "invalid reserved field");
211 if (tp.out.data.length == offset) {
212 /* No SIDs or GIDs returned */
213 torture_assert_int_equal(torture, whoami->num_gids, 0,
214 "invalid GID count");
215 torture_assert_int_equal(torture, whoami->num_sids, 0,
216 "invalid SID count");
217 torture_assert_int_equal(torture, whoami->num_sid_bytes, 0,
218 "invalid SID byte count");
222 if (whoami->num_gids != 0) {
223 int remain = tp.out.data.length - offset;
224 int gid_bytes = whoami->num_gids * 8;
226 if (whoami->num_sids == 0) {
227 torture_assert_int_equal(torture, remain, gid_bytes,
228 "GID count does not match data length");
230 torture_assert(torture, remain > gid_bytes,
231 "invalid GID count");
234 whoami->gid_list = talloc_array(mem_ctx, uint64_t, whoami->num_gids);
235 torture_assert(torture, whoami->gid_list != NULL, "out of memory");
237 torture_comment(torture, "\tGIDs:\n");
239 for (i = 0; i < whoami->num_gids; ++i) {
240 whoami->gid_list[i] = BVAL(tp.out.data.data, offset);
242 torture_comment(torture, "\t\t%u\n", (unsigned int)whoami->gid_list[i]);
246 /* Check if there should be data left for the SID list. */
247 if (tp.out.data.length == offset) {
248 torture_assert_int_equal(torture, whoami->num_sids, 0,
249 "invalid SID count");
253 /* All the remaining bytes must be the SID list. */
254 torture_assert_int_equal(torture,
255 whoami->num_sid_bytes, (tp.out.data.length - offset),
256 "invalid SID byte count");
258 if (whoami->num_sids != 0) {
260 whoami->sid_list = talloc_array(mem_ctx, struct dom_sid *,
262 torture_assert(torture, whoami->sid_list != NULL,
265 torture_comment(torture, "\tSIDs:\n");
267 for (i = 0; i < whoami->num_sids; ++i) {
268 if (!whoami_sid_parse(mem_ctx, torture,
269 &tp.out.data, &offset,
270 &whoami->sid_list[i])) {
274 torture_comment(torture, "\t\t%s\n",
275 dom_sid_string(torture, whoami->sid_list[i]));
279 /* We should be at the end of the response now. */
280 torture_assert_int_equal(torture, tp.out.data.length, offset,
281 "trailing garbage bytes");
286 static bool test_against_ldap(struct torture_context *torture, struct ldb_context *ldb, bool is_dc,
287 struct smb_whoami *whoami)
289 struct ldb_message *msg;
290 struct ldb_message_element *el;
292 const char *attrs[] = { "tokenGroups", NULL };
295 torture_assert_int_equal(torture, dsdb_search_one(ldb, torture, &msg, NULL, LDB_SCOPE_BASE, attrs, 0, NULL), LDB_SUCCESS, "searching for tokenGroups");
296 el = ldb_msg_find_element(msg, "tokenGroups");
297 torture_assert(torture, el, "obtaining tokenGroups");
298 torture_assert(torture, el->num_values > 0, "Number of SIDs from LDAP needs to be more than 0");
299 torture_assert(torture, whoami->num_sids > 0, "Number of SIDs from LDAP needs to be more than 0");
302 torture_assert_int_equal(torture, el->num_values, whoami->num_sids, "Number of SIDs from LDAP and number of SIDs from CIFS does not match!");
304 for (i = 0; i < el->num_values; i++) {
305 struct dom_sid *sid = talloc(torture, struct dom_sid);
306 struct sid_parse_ret ret;
307 torture_assert(torture, sid != NULL, "talloc failed");
309 ret = sid_parse(el->values[i].data,
310 el->values[i].length, sid);
311 torture_assert(torture,
314 torture_assert_str_equal(torture, dom_sid_string(sid, sid), dom_sid_string(sid, whoami->sid_list[i]), "SID from LDAP and SID from CIFS does not match!");
318 unsigned int num_domain_sids_dc = 0, num_domain_sids_member = 0;
319 struct dom_sid *user_sid = talloc(torture, struct dom_sid);
320 struct dom_sid *dom_sid = talloc(torture, struct dom_sid);
321 struct dom_sid *dc_sids = talloc_array(torture, struct dom_sid, el->num_values);
322 struct dom_sid *member_sids = talloc_array(torture, struct dom_sid, whoami->num_sids);
323 struct sid_parse_ret ret;
324 torture_assert(torture, user_sid != NULL, "talloc failed");
325 ret = sid_parse(el->values[0].data,
326 el->values[0].length,
328 torture_assert(torture,
331 torture_assert_ntstatus_equal(torture, dom_sid_split_rid(torture, user_sid, &dom_sid, NULL), NT_STATUS_OK, "failed to split domain SID from user SID");
332 for (i = 0; i < el->num_values; i++) {
333 struct dom_sid *sid = talloc(dc_sids, struct dom_sid);
334 torture_assert(torture, sid != NULL, "talloc failed");
336 ret = sid_parse(el->values[i].data,
337 el->values[i].length,
339 torture_assert(torture,
342 if (dom_sid_in_domain(dom_sid, sid)) {
343 dc_sids[num_domain_sids_dc] = *sid;
344 num_domain_sids_dc++;
349 for (i = 0; i < whoami->num_sids; i++) {
350 if (dom_sid_in_domain(dom_sid, whoami->sid_list[i])) {
351 member_sids[num_domain_sids_member] = *whoami->sid_list[i];
352 num_domain_sids_member++;
356 torture_assert_int_equal(torture, num_domain_sids_dc, num_domain_sids_member, "Number of Domain SIDs from LDAP DC and number of SIDs from CIFS member does not match!");
357 for (i = 0; i < num_domain_sids_dc; i++) {
358 torture_assert_str_equal(torture, dom_sid_string(dc_sids, &dc_sids[i]), dom_sid_string(member_sids, &member_sids[i]), "Domain SID from LDAP DC and SID from CIFS member server does not match!");
360 talloc_free(dc_sids);
361 talloc_free(member_sids);
366 bool torture_unix_whoami(struct torture_context *torture)
368 struct smbcli_state *cli;
369 struct smb_whoami whoami;
371 struct ldb_context *ldb;
372 const char *addc, *host;
374 cli = connect_to_server(torture, popt_get_cmdline_credentials());
375 torture_assert(torture, cli, "connecting to server with authenticated credentials");
377 /* Test basic authenticated mapping. */
378 torture_assert_goto(torture, smb_raw_query_posix_whoami(torture, torture,
379 cli, &whoami, 0xFFFF), ret, fail,
380 "calling SMB_QFS_POSIX_WHOAMI on an authenticated connection");
382 /* Check that our anonymous login mapped us to guest on the server, but
383 * only if the server supports this.
385 if (whoami.mapping_mask & SMB_WHOAMI_GUEST) {
386 bool guest = whoami.mapping_flags & SMB_WHOAMI_GUEST;
387 torture_comment(torture, "checking whether we were logged in as guest... %s\n",
388 guest ? "YES" : "NO");
389 torture_assert(torture,
390 cli_credentials_is_anonymous(
391 popt_get_cmdline_credentials()) == guest,
392 "login did not credentials map to guest");
394 torture_comment(torture, "server does not support SMB_WHOAMI_GUEST flag\n");
397 addc = torture_setting_string(torture, "addc", NULL);
398 host = torture_setting_string(torture, "host", NULL);
401 ldb = ldb_wrap_connect(torture, torture->ev, torture->lp_ctx, talloc_asprintf(torture, "ldap://%s", addc),
402 NULL, popt_get_cmdline_credentials(), 0);
403 torture_assert(torture, ldb, "ldb connect failed");
405 /* We skip this testing if we could not contact the LDAP server */
406 if (!test_against_ldap(torture, ldb, strcasecmp(addc, host) == 0, &whoami)) {
411 /* Test that the server drops the UID and GID list. */
412 torture_assert_goto(torture, smb_raw_query_posix_whoami(torture, torture,
413 cli, &whoami, 0x40), ret, fail,
414 "calling SMB_QFS_POSIX_WHOAMI with a small buffer\n");
416 torture_assert_int_equal(torture, whoami.num_gids, 0,
417 "invalid GID count");
418 torture_assert_int_equal(torture, whoami.num_sids, 0,
419 "invalid SID count");
420 torture_assert_int_equal(torture, whoami.num_sid_bytes, 0,
421 "invalid SID bytes count");
432 /* vim: set sts=8 sw=8 : */