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Test the SMB_WHOAMI Unix extension.
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Copyright (C) 2007 James Peach
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include "libcli/libcli.h"
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#include "libcli/raw/interfaces.h"
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#include "libcli/raw/raw_proto.h"
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#include "torture/torture.h"
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#include "torture/basic/proto.h"
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#include "lib/cmdline/popt_common.h"
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#include "auth/credentials/credentials.h"
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#include "param/param.h"
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#include "libcli/resolve/resolve.h"
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/* Size (in bytes) of the required fields in the SMBwhoami response. */
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#define WHOAMI_REQUIRED_SIZE 40
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enum smb_whoami_flags {
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SMB_WHOAMI_GUEST = 0x1 /* Logged in as (or squashed to) guest */
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SMBWhoami - Query the user mapping performed by the server for the
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connected tree. This is a subcommand of the TRANS2_QFSINFO.
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4 bytes unsigned - mapping flags (smb_whoami_flags)
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4 bytes unsigned - flags mask
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8 bytes unsigned - primary UID
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8 bytes unsigned - primary GID
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4 bytes unsigned - number of supplementary GIDs
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4 bytes unsigned - number of SIDs
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4 bytes unsigned - SID list byte count
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4 bytes - pad / reserved (must be zero)
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8 bytes unsigned[] - list of GIDs (may be empty)
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DOM_SID[] - list of SIDs (may be empty)
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uint32_t mapping_flags;
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uint32_t mapping_mask;
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uint32_t num_sid_bytes;
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uint32_t reserved; /* Must be zero */
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struct dom_sid ** sid_list;
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static struct smbcli_state *connect_to_server(struct torture_context *tctx,
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struct cli_credentials *creds)
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struct smbcli_state *cli;
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const char *host = torture_setting_string(tctx, "host", NULL);
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const char *share = torture_setting_string(tctx, "share", NULL);
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struct smbcli_options options;
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struct smbcli_session_options session_options;
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lp_smbcli_options(tctx->lp_ctx, &options);
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lp_smbcli_session_options(tctx->lp_ctx, &session_options);
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status = smbcli_full_connection(tctx, &cli, host,
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lp_smb_ports(tctx->lp_ctx),
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share, NULL, lp_socket_options(tctx->lp_ctx),
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creds, lp_resolve_context(tctx->lp_ctx),
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tctx->ev, &options, &session_options,
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lp_iconv_convenience(tctx->lp_ctx),
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lp_gensec_settings(tctx, tctx->lp_ctx));
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if (!NT_STATUS_IS_OK(status)) {
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printf("failed to connect to //%s/%s: %s\n",
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host, share, nt_errstr(status));
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static bool sid_parse(void *mem_ctx,
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struct torture_context *torture,
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DATA_BLOB *data, size_t *offset,
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struct dom_sid **psid)
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size_t remain = data->length - *offset;
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*psid = talloc_zero(mem_ctx, struct dom_sid);
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torture_assert(torture, *psid != NULL, "out of memory");
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torture_assert(torture, remain >= 8,
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"invalid SID format");
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(*psid)->sid_rev_num = CVAL(data->data, *offset);
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(*psid)->num_auths = CVAL(data->data, *offset + 1);
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memcpy((*psid)->id_auth, data->data + *offset + 2, 6);
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remain = data->length - *offset;
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torture_assert(torture, remain >= ((*psid)->num_auths * 4),
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"invalid sub_auth byte count");
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torture_assert(torture, (*psid)->num_auths >= 0,
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"invalid sub_auth value");
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torture_assert(torture, (*psid)->num_auths <= 15,
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"invalid sub_auth value");
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for (i = 0; i < (*psid)->num_auths; i++) {
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(*psid)->sub_auths[i] = IVAL(data->data, *offset);
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static bool smb_raw_query_posix_whoami(void *mem_ctx,
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struct torture_context *torture,
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struct smbcli_state *cli,
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struct smb_whoami *whoami,
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struct smb_trans2 tp;
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uint16_t setup = TRANSACT2_QFSINFO;
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ZERO_STRUCTP(whoami);
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tp.in.setup_count = 1;
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tp.in.max_param = 10;
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tp.in.max_data = (uint16_t)max_data;
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tp.in.setup = &setup;
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tp.in.trans_name = NULL;
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SSVAL(&info_level, 0, SMB_QFS_POSIX_WHOAMI);
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tp.in.params = data_blob_talloc(mem_ctx, &info_level, 2);
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tp.in.data = data_blob_talloc(mem_ctx, NULL, 0);
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status = smb_raw_trans2(cli->tree, mem_ctx, &tp);
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torture_assert_ntstatus_equal(torture, status, NT_STATUS_OK,
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"doing SMB_QFS_POSIX_WHOAMI");
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/* Make sure we got back all the required fields. */
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torture_assert(torture, tp.out.params.length == 0,
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"trans2 params should be empty");
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torture_assert(torture, tp.out.data.length >= WHOAMI_REQUIRED_SIZE,
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"checking for required response fields");
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whoami->mapping_flags = IVAL(tp.out.data.data, 0);
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whoami->mapping_mask = IVAL(tp.out.data.data, 4);
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whoami->server_uid = BVAL(tp.out.data.data, 8);
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whoami->server_gid = BVAL(tp.out.data.data, 16);
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whoami->num_gids = IVAL(tp.out.data.data, 24);
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whoami->num_sids = IVAL(tp.out.data.data, 28);
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whoami->num_sid_bytes = IVAL(tp.out.data.data, 32);
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whoami->reserved = IVAL(tp.out.data.data, 36);
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/* The GID list and SID list are optional, depending on the count
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if (whoami->num_sids != 0) {
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torture_assert(torture, whoami->num_sid_bytes != 0,
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"SID count does not match byte count");
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printf("\tmapping_flags=0x%08x mapping_mask=0x%08x\n",
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whoami->mapping_flags, whoami->mapping_mask);
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printf("\tserver UID=%llu GID=%llu\n",
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(unsigned long long)whoami->server_uid, (unsigned long long)whoami->server_gid);
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printf("\t%u GIDs, %u SIDs, %u SID bytes\n",
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whoami->num_gids, whoami->num_sids,
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whoami->num_sid_bytes);
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offset = WHOAMI_REQUIRED_SIZE;
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torture_assert_int_equal(torture, whoami->reserved, 0,
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"invalid reserved field");
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if (tp.out.data.length == offset) {
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/* No SIDs or GIDs returned */
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torture_assert_int_equal(torture, whoami->num_gids, 0,
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"invalid GID count");
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torture_assert_int_equal(torture, whoami->num_sids, 0,
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"invalid SID count");
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torture_assert_int_equal(torture, whoami->num_sid_bytes, 0,
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"invalid SID byte count");
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if (whoami->num_gids != 0) {
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int remain = tp.out.data.length - offset;
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int gid_bytes = whoami->num_gids * 8;
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if (whoami->num_sids == 0) {
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torture_assert_int_equal(torture, remain, gid_bytes,
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"GID count does not match data length");
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torture_assert(torture, remain > gid_bytes,
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"invalid GID count");
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whoami->gid_list = talloc_array(mem_ctx, uint64_t, whoami->num_gids);
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torture_assert(torture, whoami->gid_list != NULL, "out of memory");
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for (i = 0; i < whoami->num_gids; ++i) {
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whoami->gid_list[i] = BVAL(tp.out.data.data, offset);
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/* Check if there should be data left for the SID list. */
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if (tp.out.data.length == offset) {
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torture_assert_int_equal(torture, whoami->num_sids, 0,
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"invalid SID count");
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/* All the remaining bytes must be the SID list. */
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torture_assert_int_equal(torture,
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whoami->num_sid_bytes, (tp.out.data.length - offset),
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"invalid SID byte count");
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if (whoami->num_sids != 0) {
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whoami->sid_list = talloc_array(mem_ctx, struct dom_sid *,
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torture_assert(torture, whoami->sid_list != NULL,
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for (i = 0; i < whoami->num_sids; ++i) {
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if (!sid_parse(mem_ctx, torture,
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&tp.out.data, &offset,
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&whoami->sid_list[i])) {
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/* We should be at the end of the response now. */
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torture_assert_int_equal(torture, tp.out.data.length, offset,
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"trailing garbage bytes");
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bool torture_unix_whoami(struct torture_context *torture)
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struct smbcli_state *cli;
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struct cli_credentials *anon_credentials;
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struct smb_whoami whoami;
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if (!(cli = connect_to_server(torture, cmdline_credentials))) {
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/* Test basic authenticated mapping. */
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printf("calling SMB_QFS_POSIX_WHOAMI on an authenticated connection\n");
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if (!smb_raw_query_posix_whoami(torture, torture,
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cli, &whoami, 0xFFFF)) {
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/* Test that the server drops the UID and GID list. */
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printf("calling SMB_QFS_POSIX_WHOAMI with a small buffer\n");
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if (!smb_raw_query_posix_whoami(torture, torture,
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cli, &whoami, 0x40)) {
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torture_assert_int_equal(torture, whoami.num_gids, 0,
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"invalid GID count");
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torture_assert_int_equal(torture, whoami.num_sids, 0,
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"invalid SID count");
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torture_assert_int_equal(torture, whoami.num_sid_bytes, 0,
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"invalid SID bytes count");
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printf("calling SMB_QFS_POSIX_WHOAMI on an anonymous connection\n");
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anon_credentials = cli_credentials_init_anon(torture);
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if (!(cli = connect_to_server(torture, anon_credentials))) {
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if (!smb_raw_query_posix_whoami(torture, torture,
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cli, &whoami, 0xFFFF)) {
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/* Check that our anonymous login mapped us to guest on the server, but
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* only if the server supports this.
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if (whoami.mapping_mask & SMB_WHOAMI_GUEST) {
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printf("checking whether we were logged in as guest... %s\n",
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whoami.mapping_flags & SMB_WHOAMI_GUEST ? "YES" : "NO");
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torture_assert(torture, whoami.mapping_flags & SMB_WHOAMI_GUEST,
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"anonymous login did not map to guest");
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printf("server does not support SMB_WHOAMI_GUEST flag\n");
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/* vim: set sts=8 sw=8 : */