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-rw-r--r--source4/torture/unix/whoami.c433
1 files changed, 433 insertions, 0 deletions
diff --git a/source4/torture/unix/whoami.c b/source4/torture/unix/whoami.c
new file mode 100644
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+++ b/source4/torture/unix/whoami.c
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+/*
+ Test the SMB_WHOAMI Unix extension.
+
+ Copyright (C) 2007 James Peach
+
+ 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
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "libcli/libcli.h"
+#include "libcli/raw/raw_proto.h"
+#include "torture/torture.h"
+#include "torture/unix/proto.h"
+#include "lib/cmdline/cmdline.h"
+#include "auth/credentials/credentials.h"
+#include "param/param.h"
+#include "libcli/resolve/resolve.h"
+#include <ldb.h>
+#include "lib/util/util_ldb.h"
+#include "ldb_wrap.h"
+#include "dsdb/samdb/samdb.h"
+#include "../libcli/security/security.h"
+
+#undef strcasecmp
+
+/* Size (in bytes) of the required fields in the SMBwhoami response. */
+#define WHOAMI_REQUIRED_SIZE 40
+
+/*
+ SMBWhoami - Query the user mapping performed by the server for the
+ connected tree. This is a subcommand of the TRANS2_QFSINFO.
+
+ Returns:
+ 4 bytes unsigned - mapping flags (smb_whoami_flags)
+ 4 bytes unsigned - flags mask
+
+ 8 bytes unsigned - primary UID
+ 8 bytes unsigned - primary GID
+ 4 bytes unsigned - number of supplementary GIDs
+ 4 bytes unsigned - number of SIDs
+ 4 bytes unsigned - SID list byte count
+ 4 bytes - pad / reserved (must be zero)
+
+ 8 bytes unsigned[] - list of GIDs (may be empty)
+ struct dom_sid[] - list of SIDs (may be empty)
+*/
+
+struct smb_whoami
+{
+ uint32_t mapping_flags;
+ uint32_t mapping_mask;
+ uint64_t server_uid;
+ uint64_t server_gid;
+ uint32_t num_gids;
+ uint32_t num_sids;
+ uint32_t num_sid_bytes;
+ uint32_t reserved; /* Must be zero */
+ uint64_t * gid_list;
+ struct dom_sid ** sid_list;
+};
+
+static struct smbcli_state *connect_to_server(struct torture_context *tctx,
+ struct cli_credentials *creds)
+{
+ NTSTATUS status;
+ struct smbcli_state *cli;
+
+ const char *host = torture_setting_string(tctx, "host", NULL);
+ const char *share = torture_setting_string(tctx, "share", NULL);
+ struct smbcli_options options;
+ struct smbcli_session_options session_options;
+
+ lpcfg_smbcli_options(tctx->lp_ctx, &options);
+ lpcfg_smbcli_session_options(tctx->lp_ctx, &session_options);
+
+ status = smbcli_full_connection(tctx, &cli, host,
+ lpcfg_smb_ports(tctx->lp_ctx),
+ share, NULL, lpcfg_socket_options(tctx->lp_ctx),
+ creds, lpcfg_resolve_context(tctx->lp_ctx),
+ tctx->ev, &options, &session_options,
+ lpcfg_gensec_settings(tctx, tctx->lp_ctx));
+
+ if (!NT_STATUS_IS_OK(status)) {
+ torture_comment(tctx,
+ "FATAL: Failed to connect to //%s/%s "
+ "with %s - %s\n",
+ host,
+ share,
+ cli_credentials_get_username(creds),
+ nt_errstr(status));
+ return NULL;
+ }
+
+ return cli;
+}
+
+static bool whoami_sid_parse(void *mem_ctx,
+ struct torture_context *torture,
+ DATA_BLOB *data, size_t *offset,
+ struct dom_sid **psid)
+{
+ size_t remain = data->length - *offset;
+ int i;
+
+ *psid = talloc_zero(mem_ctx, struct dom_sid);
+ torture_assert(torture, *psid != NULL, "out of memory");
+
+ torture_assert(torture, remain >= 8,
+ "invalid SID format");
+
+ (*psid)->sid_rev_num = CVAL(data->data, *offset);
+ (*psid)->num_auths = CVAL(data->data, *offset + 1);
+ memcpy((*psid)->id_auth, data->data + *offset + 2, 6);
+
+ (*offset) += 8;
+ remain = data->length - *offset;
+
+ torture_assert(torture, remain >= ((*psid)->num_auths * 4),
+ "invalid sub_auth byte count");
+ torture_assert(torture, (*psid)->num_auths >= 0,
+ "invalid sub_auth value");
+ torture_assert(torture, (*psid)->num_auths <= 15,
+ "invalid sub_auth value");
+
+ for (i = 0; i < (*psid)->num_auths; i++) {
+ (*psid)->sub_auths[i] = IVAL(data->data, *offset);
+ (*offset) += 4;
+ }
+
+ return true;
+}
+
+static bool smb_raw_query_posix_whoami(void *mem_ctx,
+ struct torture_context *torture,
+ struct smbcli_state *cli,
+ struct smb_whoami *whoami,
+ unsigned max_data)
+{
+ struct smb_trans2 tp;
+ NTSTATUS status;
+ size_t offset;
+ int i;
+
+ uint16_t setup = TRANSACT2_QFSINFO;
+ uint16_t info_level;
+
+ ZERO_STRUCTP(whoami);
+
+ tp.in.max_setup = 0;
+ tp.in.flags = 0;
+ tp.in.timeout = 0;
+ tp.in.setup_count = 1;
+ tp.in.max_param = 10;
+ tp.in.max_data = (uint16_t)max_data;
+ tp.in.setup = &setup;
+ tp.in.trans_name = NULL;
+ SSVAL(&info_level, 0, SMB_QFS_POSIX_WHOAMI);
+ tp.in.params = data_blob_talloc(mem_ctx, &info_level, 2);
+ tp.in.data = data_blob_talloc(mem_ctx, NULL, 0);
+
+ status = smb_raw_trans2(cli->tree, mem_ctx, &tp);
+ torture_assert_ntstatus_equal(torture, status, NT_STATUS_OK,
+ "doing SMB_QFS_POSIX_WHOAMI");
+
+ /* Make sure we got back all the required fields. */
+ torture_assert(torture, tp.out.params.length == 0,
+ "trans2 params should be empty");
+ torture_assert(torture, tp.out.data.length >= WHOAMI_REQUIRED_SIZE,
+ "checking for required response fields");
+
+ whoami->mapping_flags = IVAL(tp.out.data.data, 0);
+ whoami->mapping_mask = IVAL(tp.out.data.data, 4);
+ whoami->server_uid = BVAL(tp.out.data.data, 8);
+ whoami->server_gid = BVAL(tp.out.data.data, 16);
+ whoami->num_gids = IVAL(tp.out.data.data, 24);
+ whoami->num_sids = IVAL(tp.out.data.data, 28);
+ whoami->num_sid_bytes = IVAL(tp.out.data.data, 32);
+ whoami->reserved = IVAL(tp.out.data.data, 36);
+
+ /* The GID list and SID list are optional, depending on the count
+ * and length fields.
+ */
+ if (whoami->num_sids != 0) {
+ torture_assert(torture, whoami->num_sid_bytes != 0,
+ "SID count does not match byte count");
+ }
+
+ printf("\tmapping_flags=0x%08x mapping_mask=0x%08x\n",
+ whoami->mapping_flags, whoami->mapping_mask);
+ printf("\tserver UID=%llu GID=%llu\n",
+ (unsigned long long)whoami->server_uid, (unsigned long long)whoami->server_gid);
+ printf("\t%u GIDs, %u SIDs, %u SID bytes\n",
+ whoami->num_gids, whoami->num_sids,
+ whoami->num_sid_bytes);
+
+ offset = WHOAMI_REQUIRED_SIZE;
+
+ torture_assert_int_equal(torture, whoami->reserved, 0,
+ "invalid reserved field");
+
+ if (tp.out.data.length == offset) {
+ /* No SIDs or GIDs returned */
+ torture_assert_int_equal(torture, whoami->num_gids, 0,
+ "invalid GID count");
+ torture_assert_int_equal(torture, whoami->num_sids, 0,
+ "invalid SID count");
+ torture_assert_int_equal(torture, whoami->num_sid_bytes, 0,
+ "invalid SID byte count");
+ return true;
+ }
+
+ if (whoami->num_gids != 0) {
+ int remain = tp.out.data.length - offset;
+ int gid_bytes = whoami->num_gids * 8;
+
+ if (whoami->num_sids == 0) {
+ torture_assert_int_equal(torture, remain, gid_bytes,
+ "GID count does not match data length");
+ } else {
+ torture_assert(torture, remain > gid_bytes,
+ "invalid GID count");
+ }
+
+ whoami->gid_list = talloc_array(mem_ctx, uint64_t, whoami->num_gids);
+ torture_assert(torture, whoami->gid_list != NULL, "out of memory");
+
+ torture_comment(torture, "\tGIDs:\n");
+
+ for (i = 0; i < whoami->num_gids; ++i) {
+ whoami->gid_list[i] = BVAL(tp.out.data.data, offset);
+ offset += 8;
+ torture_comment(torture, "\t\t%u\n", (unsigned int)whoami->gid_list[i]);
+ }
+ }
+
+ /* Check if there should be data left for the SID list. */
+ if (tp.out.data.length == offset) {
+ torture_assert_int_equal(torture, whoami->num_sids, 0,
+ "invalid SID count");
+ return true;
+ }
+
+ /* All the remaining bytes must be the SID list. */
+ torture_assert_int_equal(torture,
+ whoami->num_sid_bytes, (tp.out.data.length - offset),
+ "invalid SID byte count");
+
+ if (whoami->num_sids != 0) {
+
+ whoami->sid_list = talloc_array(mem_ctx, struct dom_sid *,
+ whoami->num_sids);
+ torture_assert(torture, whoami->sid_list != NULL,
+ "out of memory");
+
+ torture_comment(torture, "\tSIDs:\n");
+
+ for (i = 0; i < whoami->num_sids; ++i) {
+ if (!whoami_sid_parse(mem_ctx, torture,
+ &tp.out.data, &offset,
+ &whoami->sid_list[i])) {
+ return false;
+ }
+
+ torture_comment(torture, "\t\t%s\n",
+ dom_sid_string(torture, whoami->sid_list[i]));
+ }
+ }
+
+ /* We should be at the end of the response now. */
+ torture_assert_int_equal(torture, tp.out.data.length, offset,
+ "trailing garbage bytes");
+
+ return true;
+}
+
+static bool test_against_ldap(struct torture_context *torture, struct ldb_context *ldb, bool is_dc,
+ struct smb_whoami *whoami)
+{
+ struct ldb_message *msg;
+ struct ldb_message_element *el;
+
+ const char *attrs[] = { "tokenGroups", NULL };
+ int i;
+
+ torture_assert_int_equal(torture, dsdb_search_one(ldb, torture, &msg, NULL, LDB_SCOPE_BASE, attrs, 0, NULL), LDB_SUCCESS, "searching for tokenGroups");
+ el = ldb_msg_find_element(msg, "tokenGroups");
+ torture_assert(torture, el, "obtaining tokenGroups");
+ torture_assert(torture, el->num_values > 0, "Number of SIDs from LDAP needs to be more than 0");
+ torture_assert(torture, whoami->num_sids > 0, "Number of SIDs from LDAP needs to be more than 0");
+
+ if (is_dc) {
+ 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!");
+
+ for (i = 0; i < el->num_values; i++) {
+ struct dom_sid *sid = talloc(torture, struct dom_sid);
+ ssize_t ret;
+ torture_assert(torture, sid != NULL, "talloc failed");
+
+ ret = sid_parse(el->values[i].data,
+ el->values[i].length, sid);
+ torture_assert(torture,
+ ret != -1,
+ "sid parse failed");
+ 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!");
+ talloc_free(sid);
+ }
+ } else {
+ unsigned int num_domain_sids_dc = 0, num_domain_sids_member = 0;
+ struct dom_sid *user_sid = talloc(torture, struct dom_sid);
+ struct dom_sid *dom_sid = talloc(torture, struct dom_sid);
+ struct dom_sid *dc_sids = talloc_array(torture, struct dom_sid, el->num_values);
+ struct dom_sid *member_sids = talloc_array(torture, struct dom_sid, whoami->num_sids);
+ ssize_t ret;
+ torture_assert(torture, user_sid != NULL, "talloc failed");
+ ret = sid_parse(el->values[0].data,
+ el->values[0].length,
+ user_sid);
+ torture_assert(torture,
+ ret != -1,
+ "sid parse failed");
+ 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");
+ for (i = 0; i < el->num_values; i++) {
+ struct dom_sid *sid = talloc(dc_sids, struct dom_sid);
+ torture_assert(torture, sid != NULL, "talloc failed");
+
+ ret = sid_parse(el->values[i].data,
+ el->values[i].length,
+ sid);
+ torture_assert(torture,
+ ret != -1,
+ "sid parse failed");
+ if (dom_sid_in_domain(dom_sid, sid)) {
+ dc_sids[num_domain_sids_dc] = *sid;
+ num_domain_sids_dc++;
+ }
+ talloc_free(sid);
+ }
+
+ for (i = 0; i < whoami->num_sids; i++) {
+ if (dom_sid_in_domain(dom_sid, whoami->sid_list[i])) {
+ member_sids[num_domain_sids_member] = *whoami->sid_list[i];
+ num_domain_sids_member++;
+ }
+ }
+
+ 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!");
+ for (i = 0; i < num_domain_sids_dc; i++) {
+ 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!");
+ }
+ talloc_free(dc_sids);
+ talloc_free(member_sids);
+ }
+ return true;
+}
+
+bool torture_unix_whoami(struct torture_context *torture)
+{
+ struct smbcli_state *cli;
+ struct smb_whoami whoami;
+ bool ret = false;
+ struct ldb_context *ldb;
+ const char *addc, *host;
+
+ cli = connect_to_server(torture, samba_cmdline_get_creds());
+ torture_assert(torture, cli, "connecting to server with authenticated credentials");
+
+ /* Test basic authenticated mapping. */
+ torture_assert_goto(torture, smb_raw_query_posix_whoami(torture, torture,
+ cli, &whoami, 0xFFFF), ret, fail,
+ "calling SMB_QFS_POSIX_WHOAMI on an authenticated connection");
+
+ /* Check that our anonymous login mapped us to guest on the server, but
+ * only if the server supports this.
+ */
+ if (whoami.mapping_mask & SMB_WHOAMI_GUEST) {
+ bool guest = whoami.mapping_flags & SMB_WHOAMI_GUEST;
+ torture_comment(torture, "checking whether we were logged in as guest... %s\n",
+ guest ? "YES" : "NO");
+ torture_assert(torture,
+ cli_credentials_is_anonymous(
+ samba_cmdline_get_creds()) == guest,
+ "login did not credentials map to guest");
+ } else {
+ torture_comment(torture, "server does not support SMB_WHOAMI_GUEST flag\n");
+ }
+
+ addc = torture_setting_string(torture, "addc", NULL);
+ host = torture_setting_string(torture, "host", NULL);
+
+ if (addc) {
+ ldb = ldb_wrap_connect(torture, torture->ev, torture->lp_ctx, talloc_asprintf(torture, "ldap://%s", addc),
+ NULL, samba_cmdline_get_creds(), 0);
+ torture_assert(torture, ldb, "ldb connect failed");
+
+ /* We skip this testing if we could not contact the LDAP server */
+ if (!test_against_ldap(torture, ldb, strcasecmp(addc, host) == 0, &whoami)) {
+ goto fail;
+ }
+ }
+
+ /* Test that the server drops the UID and GID list. */
+ torture_assert_goto(torture, smb_raw_query_posix_whoami(torture, torture,
+ cli, &whoami, 0x40), ret, fail,
+ "calling SMB_QFS_POSIX_WHOAMI with a small buffer\n");
+
+ torture_assert_int_equal(torture, whoami.num_gids, 0,
+ "invalid GID count");
+ torture_assert_int_equal(torture, whoami.num_sids, 0,
+ "invalid SID count");
+ torture_assert_int_equal(torture, whoami.num_sid_bytes, 0,
+ "invalid SID bytes count");
+
+ smbcli_tdis(cli);
+
+ return true;
+fail:
+
+ smbcli_tdis(cli);
+ return ret;
+}
+
+/* vim: set sts=8 sw=8 : */
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-12 21:30:14 +0000