/** * Obtain the client principal for this credentials context. * @param cred credentials context * @retval The username set on this context. * @note Return value will never be NULL except by programmer error. */ _PUBLIC_ const char *cli_credentials_get_principal_and_obtained(struct cli_credentials *cred, TALLOC_CTX *mem_ctx, enum credentials_obtained *obtained) { if (cred->machine_account_pending) { cli_credentials_set_machine_account(cred, cred->machine_account_pending_lp_ctx); } if (cred->principal_obtained == CRED_CALLBACK && !cred->callback_running) { cred->callback_running = true; cred->principal = cred->principal_cb(cred); cred->callback_running = false; if (cred->principal_obtained == CRED_CALLBACK) { cred->principal_obtained = CRED_CALLBACK_RESULT; cli_credentials_invalidate_ccache(cred, cred->principal_obtained); } } if (cred->principal_obtained < cred->username_obtained || cred->principal_obtained < MAX(cred->domain_obtained, cred->realm_obtained)) { if (cred->domain_obtained > cred->realm_obtained) { *obtained = MIN(cred->domain_obtained, cred->username_obtained); return talloc_asprintf(mem_ctx, "%s@%s", cli_credentials_get_username(cred), cli_credentials_get_domain(cred)); } else { *obtained = MIN(cred->domain_obtained, cred->username_obtained); return talloc_asprintf(mem_ctx, "%s@%s", cli_credentials_get_username(cred), cli_credentials_get_realm(cred)); } } *obtained = cred->principal_obtained; return talloc_strdup(mem_ctx, cred->principal); }
_PUBLIC_ bool cli_credentials_set_username(struct cli_credentials *cred, const char *val, enum credentials_obtained obtained) { if (obtained >= cred->username_obtained) { cred->username = talloc_strdup(cred, val); cred->username_obtained = obtained; cli_credentials_invalidate_ccache(cred, cred->username_obtained); return true; } return false; }
/** * Set the realm for this credentials context, and force it to * uppercase for the sainity of our local kerberos libraries */ _PUBLIC_ bool cli_credentials_set_realm(struct cli_credentials *cred, const char *val, enum credentials_obtained obtained) { if (obtained >= cred->realm_obtained) { cred->realm = strupper_talloc(cred, val); cred->realm_obtained = obtained; cli_credentials_invalidate_ccache(cred, cred->realm_obtained); return true; } return false; }
_PUBLIC_ bool cli_credentials_set_password_callback(struct cli_credentials *cred, const char *(*password_cb) (struct cli_credentials *)) { if (cred->password_obtained < CRED_CALLBACK) { cred->password_tries = 3; cred->password_cb = password_cb; cred->password_obtained = CRED_CALLBACK; cli_credentials_invalidate_ccache(cred, cred->password_obtained); return true; } return false; }
/** * Obtain the Kerberos realm for this credentials context. * @param cred credentials context * @retval The realm set on this context. * @note Return value will never be NULL except by programmer error. */ _PUBLIC_ const char *cli_credentials_get_realm(struct cli_credentials *cred) { if (cred->machine_account_pending) { cli_credentials_set_machine_account(cred, cred->machine_account_pending_lp_ctx); } if (cred->realm_obtained == CRED_CALLBACK && !cred->callback_running) { cred->callback_running = true; cred->realm = cred->realm_cb(cred); cred->callback_running = false; if (cred->realm_obtained == CRED_CALLBACK) { cred->realm_obtained = CRED_CALLBACK_RESULT; cli_credentials_invalidate_ccache(cred, cred->realm_obtained); } } return cred->realm; }
_PUBLIC_ bool cli_credentials_set_password(struct cli_credentials *cred, const char *val, enum credentials_obtained obtained) { if (obtained >= cred->password_obtained) { cred->password_tries = 0; cred->password = talloc_strdup(cred, val); if (cred->password) { /* Don't print the actual password in talloc memory dumps */ talloc_set_name_const(cred->password, "password set via cli_credentials_set_password"); } cred->password_obtained = obtained; cli_credentials_invalidate_ccache(cred, cred->password_obtained); cred->nt_hash = NULL; cred->lm_response = data_blob(NULL, 0); cred->nt_response = data_blob(NULL, 0); return true; } return false; }
/* connect to a share - used when a tree_connect operation comes in. */ static NTSTATUS cvfs_connect(struct ntvfs_module_context *ntvfs, struct ntvfs_request *req, union smb_tcon *tcon) { NTSTATUS status; struct cvfs_private *p; const char *host, *user, *pass, *domain, *remote_share; struct smb_composite_connect io; struct composite_context *creq; struct share_config *scfg = ntvfs->ctx->config; struct cli_credentials *credentials; bool machine_account; bool s4u2proxy; const char* sharename; switch (tcon->generic.level) { case RAW_TCON_TCON: sharename = tcon->tcon.in.service; break; case RAW_TCON_TCONX: sharename = tcon->tconx.in.path; break; case RAW_TCON_SMB2: sharename = tcon->smb2.in.path; break; default: return NT_STATUS_INVALID_LEVEL; } if (strncmp(sharename, "\\\\", 2) == 0) { char *str = strchr(sharename+2, '\\'); if (str) { sharename = str + 1; } } /* Here we need to determine which server to connect to. * For now we use parametric options, type cifs. * Later we will use security=server and auth_server.c. */ host = share_string_option(scfg, CIFS_SERVER, NULL); user = share_string_option(scfg, CIFS_USER, NULL); pass = share_string_option(scfg, CIFS_PASSWORD, NULL); domain = share_string_option(scfg, CIFS_DOMAIN, NULL); remote_share = share_string_option(scfg, CIFS_SHARE, NULL); if (!remote_share) { remote_share = sharename; } machine_account = share_bool_option(scfg, CIFS_USE_MACHINE_ACCT, CIFS_USE_MACHINE_ACCT_DEFAULT); s4u2proxy = share_bool_option(scfg, CIFS_USE_S4U2PROXY, CIFS_USE_S4U2PROXY_DEFAULT); p = talloc_zero(ntvfs, struct cvfs_private); if (!p) { return NT_STATUS_NO_MEMORY; } ntvfs->private_data = p; if (!host) { DEBUG(1,("CIFS backend: You must supply server\n")); return NT_STATUS_INVALID_PARAMETER; } if (user && pass) { DEBUG(5, ("CIFS backend: Using specified password\n")); credentials = cli_credentials_init(p); if (!credentials) { return NT_STATUS_NO_MEMORY; } cli_credentials_set_conf(credentials, ntvfs->ctx->lp_ctx); cli_credentials_set_username(credentials, user, CRED_SPECIFIED); if (domain) { cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED); } cli_credentials_set_password(credentials, pass, CRED_SPECIFIED); } else if (machine_account) { DEBUG(5, ("CIFS backend: Using machine account\n")); credentials = cli_credentials_init(p); cli_credentials_set_conf(credentials, ntvfs->ctx->lp_ctx); if (domain) { cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED); } status = cli_credentials_set_machine_account(credentials, ntvfs->ctx->lp_ctx); if (!NT_STATUS_IS_OK(status)) { return status; } } else if (req->session_info->credentials) { DEBUG(5, ("CIFS backend: Using delegated credentials\n")); credentials = req->session_info->credentials; } else if (s4u2proxy) { struct ccache_container *ccc = NULL; const char *err_str = NULL; int ret; char *impersonate_principal; char *self_service; char *target_service; impersonate_principal = talloc_asprintf(req, "%s@%s", req->session_info->info->account_name, req->session_info->info->domain_name); self_service = talloc_asprintf(req, "cifs/%s", lpcfg_netbios_name(ntvfs->ctx->lp_ctx)); target_service = talloc_asprintf(req, "cifs/%s", host); DEBUG(5, ("CIFS backend: Using S4U2Proxy credentials\n")); credentials = cli_credentials_init(p); cli_credentials_set_conf(credentials, ntvfs->ctx->lp_ctx); if (domain) { cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED); } status = cli_credentials_set_machine_account(credentials, ntvfs->ctx->lp_ctx); if (!NT_STATUS_IS_OK(status)) { return status; } cli_credentials_invalidate_ccache(credentials, CRED_SPECIFIED); cli_credentials_set_impersonate_principal(credentials, impersonate_principal, self_service); cli_credentials_set_target_service(credentials, target_service); ret = cli_credentials_get_ccache(credentials, ntvfs->ctx->event_ctx, ntvfs->ctx->lp_ctx, &ccc, &err_str); if (ret != 0) { status = NT_STATUS_CROSSREALM_DELEGATION_FAILURE; DEBUG(1,("S4U2Proxy: cli_credentials_get_ccache() gave: ret[%d] str[%s] - %s\n", ret, err_str, nt_errstr(status))); return status; } } else { DEBUG(1,("CIFS backend: NO delegated credentials found: You must supply server, user and password or the client must supply delegated credentials\n")); return NT_STATUS_INTERNAL_ERROR; } /* connect to the server, using the smbd event context */ io.in.dest_host = host; io.in.dest_ports = lpcfg_smb_ports(ntvfs->ctx->lp_ctx); io.in.socket_options = lpcfg_socket_options(ntvfs->ctx->lp_ctx); io.in.called_name = host; io.in.credentials = credentials; io.in.fallback_to_anonymous = false; io.in.workgroup = lpcfg_workgroup(ntvfs->ctx->lp_ctx); io.in.service = remote_share; io.in.service_type = "?????"; io.in.gensec_settings = lpcfg_gensec_settings(p, ntvfs->ctx->lp_ctx); lpcfg_smbcli_options(ntvfs->ctx->lp_ctx, &io.in.options); lpcfg_smbcli_session_options(ntvfs->ctx->lp_ctx, &io.in.session_options); if (!(ntvfs->ctx->client_caps & NTVFS_CLIENT_CAP_LEVEL_II_OPLOCKS)) { io.in.options.use_level2_oplocks = false; } creq = smb_composite_connect_send(&io, p, lpcfg_resolve_context(ntvfs->ctx->lp_ctx), ntvfs->ctx->event_ctx); status = smb_composite_connect_recv(creq, p); NT_STATUS_NOT_OK_RETURN(status); p->tree = io.out.tree; p->transport = p->tree->session->transport; SETUP_PID; p->ntvfs = ntvfs; ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "NTFS"); NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->fs_type); ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "A:"); NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->dev_type); if (tcon->generic.level == RAW_TCON_TCONX) { tcon->tconx.out.fs_type = ntvfs->ctx->fs_type; tcon->tconx.out.dev_type = ntvfs->ctx->dev_type; } /* we need to receive oplock break requests from the server */ smbcli_oplock_handler(p->transport, oplock_handler, p); p->map_generic = share_bool_option(scfg, CIFS_MAP_GENERIC, CIFS_MAP_GENERIC_DEFAULT); p->map_trans2 = share_bool_option(scfg, CIFS_MAP_TRANS2, CIFS_MAP_TRANS2_DEFAULT); return NT_STATUS_OK; }
static bool test_session_expire1(struct torture_context *tctx) { NTSTATUS status; bool ret = false; struct smbcli_options options; const char *host = torture_setting_string(tctx, "host", NULL); const char *share = torture_setting_string(tctx, "share", NULL); struct cli_credentials *credentials = cmdline_credentials; struct smb2_tree *tree = NULL; enum credentials_use_kerberos use_kerberos; char fname[256]; struct smb2_handle _h1; struct smb2_handle *h1 = NULL; struct smb2_create io1; union smb_fileinfo qfinfo; size_t i; use_kerberos = cli_credentials_get_kerberos_state(credentials); if (use_kerberos != CRED_MUST_USE_KERBEROS) { torture_warning(tctx, "smb2.session.expire1 requires -k yes!"); torture_skip(tctx, "smb2.session.expire1 requires -k yes!"); } torture_assert_int_equal(tctx, use_kerberos, CRED_MUST_USE_KERBEROS, "please use -k yes"); lpcfg_set_option(tctx->lp_ctx, "gensec_gssapi:requested_life_time=4"); lpcfg_smbcli_options(tctx->lp_ctx, &options); status = smb2_connect(tctx, host, lpcfg_smb_ports(tctx->lp_ctx), share, lpcfg_resolve_context(tctx->lp_ctx), credentials, &tree, tctx->ev, &options, lpcfg_socket_options(tctx->lp_ctx), lpcfg_gensec_settings(tctx, tctx->lp_ctx) ); torture_assert_ntstatus_ok_goto(tctx, status, ret, done, "smb2_connect failed"); /* Add some random component to the file name. */ snprintf(fname, 256, "session_expire1_%s.dat", generate_random_str(tctx, 8)); smb2_util_unlink(tree, fname); smb2_oplock_create_share(&io1, fname, smb2_util_share_access(""), smb2_util_oplock_level("b")); io1.in.create_options |= NTCREATEX_OPTIONS_DELETE_ON_CLOSE; status = smb2_create(tree, tctx, &io1); CHECK_STATUS(status, NT_STATUS_OK); _h1 = io1.out.file.handle; h1 = &_h1; CHECK_CREATED(&io1, CREATED, FILE_ATTRIBUTE_ARCHIVE); CHECK_VAL(io1.out.oplock_level, smb2_util_oplock_level("b")); /* get the security descriptor */ ZERO_STRUCT(qfinfo); qfinfo.access_information.level = RAW_FILEINFO_ACCESS_INFORMATION; qfinfo.access_information.in.file.handle = _h1; for (i=0; i < 2; i++) { torture_comment(tctx, "query info => OK\n"); ZERO_STRUCT(qfinfo.access_information.out); status = smb2_getinfo_file(tree, tctx, &qfinfo); CHECK_STATUS(status, NT_STATUS_OK); torture_comment(tctx, "sleep 5 seconds\n"); smb_msleep(5*1000); torture_comment(tctx, "query info => EXPIRED\n"); ZERO_STRUCT(qfinfo.access_information.out); status = smb2_getinfo_file(tree, tctx, &qfinfo); CHECK_STATUS(status, NT_STATUS_NETWORK_SESSION_EXPIRED); /* * the krb5 library may not handle expired creds * well, lets start with an empty ccache. */ cli_credentials_invalidate_ccache(credentials, CRED_SPECIFIED); torture_comment(tctx, "reauth => OK\n"); status = smb2_session_setup_spnego(tree->session, credentials, 0 /* previous_session_id */); CHECK_STATUS(status, NT_STATUS_OK); } ZERO_STRUCT(qfinfo.access_information.out); status = smb2_getinfo_file(tree, tctx, &qfinfo); CHECK_STATUS(status, NT_STATUS_OK); ret = true; done: if (h1 != NULL) { smb2_util_close(tree, *h1); } talloc_free(tree); lpcfg_set_option(tctx->lp_ctx, "gensec_gssapi:requested_life_time=0"); return ret; }
static bool test_session_expire1(struct torture_context *tctx) { NTSTATUS status; bool ret = false; struct smbcli_options options; struct smbcli_session_options session_options; const char *host = torture_setting_string(tctx, "host", NULL); const char *share = torture_setting_string(tctx, "share", NULL); struct cli_credentials *credentials = cmdline_credentials; struct smbcli_state *cli = NULL; enum credentials_use_kerberos use_kerberos; char fname[256]; union smb_fileinfo qfinfo; uint16_t vuid; uint16_t fnum = 0; struct smb_composite_sesssetup io_sesssetup; size_t i; use_kerberos = cli_credentials_get_kerberos_state(credentials); if (use_kerberos != CRED_MUST_USE_KERBEROS) { torture_warning(tctx, "smb2.session.expire1 requires -k yes!"); torture_skip(tctx, "smb2.session.expire1 requires -k yes!"); } torture_assert_int_equal(tctx, use_kerberos, CRED_MUST_USE_KERBEROS, "please use -k yes"); lpcfg_set_option(tctx->lp_ctx, "gensec_gssapi:requested_life_time=4"); 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), credentials, lpcfg_resolve_context(tctx->lp_ctx), tctx->ev, &options, &session_options, lpcfg_gensec_settings(tctx, tctx->lp_ctx)); torture_assert_ntstatus_ok_goto(tctx, status, ret, done, "smbcli_full_connection failed"); vuid = cli->session->vuid; /* Add some random component to the file name. */ snprintf(fname, 256, "session_expire1_%s.dat", generate_random_str(tctx, 8)); smbcli_unlink(cli->tree, fname); fnum = smbcli_nt_create_full(cli->tree, fname, 0, SEC_RIGHTS_FILE_ALL, FILE_ATTRIBUTE_NORMAL, NTCREATEX_SHARE_ACCESS_NONE, NTCREATEX_DISP_OPEN_IF, NTCREATEX_OPTIONS_DELETE_ON_CLOSE, 0); torture_assert_ntstatus_ok_goto(tctx, smbcli_nt_error(cli->tree), ret, done, "create file"); torture_assert_goto(tctx, fnum > 0, ret, done, "create file"); /* get the access information */ ZERO_STRUCT(qfinfo); qfinfo.access_information.level = RAW_FILEINFO_ACCESS_INFORMATION; qfinfo.access_information.in.file.fnum = fnum; for (i=0; i < 2; i++) { torture_comment(tctx, "query info => OK\n"); ZERO_STRUCT(qfinfo.access_information.out); status = smb_raw_fileinfo(cli->tree, tctx, &qfinfo); torture_assert_ntstatus_ok_goto(tctx, status, ret, done, "raw_fileinfo failed"); torture_comment(tctx, "sleep 5 seconds\n"); smb_msleep(5*1000); } /* * the krb5 library may not handle expired creds * well, lets start with an empty ccache. */ cli_credentials_invalidate_ccache(credentials, CRED_SPECIFIED); /* * now with CAP_DYNAMIC_REAUTH * * This should trigger NT_STATUS_NETWORK_SESSION_EXPIRED */ ZERO_STRUCT(io_sesssetup); io_sesssetup.in.sesskey = cli->transport->negotiate.sesskey; io_sesssetup.in.capabilities = cli->transport->negotiate.capabilities; io_sesssetup.in.capabilities |= CAP_DYNAMIC_REAUTH; io_sesssetup.in.credentials = credentials; io_sesssetup.in.workgroup = lpcfg_workgroup(tctx->lp_ctx); io_sesssetup.in.gensec_settings = lpcfg_gensec_settings(tctx, tctx->lp_ctx); torture_comment(tctx, "reauth with CAP_DYNAMIC_REAUTH => OK\n"); ZERO_STRUCT(io_sesssetup.out); status = smb_composite_sesssetup(cli->session, &io_sesssetup); torture_assert_ntstatus_ok_goto(tctx, status, ret, done, "reauth failed"); torture_assert_int_equal_goto(tctx, io_sesssetup.out.vuid, vuid, ret, done, "reauth"); for (i=0; i < 2; i++) { torture_comment(tctx, "query info => OK\n"); ZERO_STRUCT(qfinfo.access_information.out); status = smb_raw_fileinfo(cli->tree, tctx, &qfinfo); torture_assert_ntstatus_ok_goto(tctx, status, ret, done, "raw_fileinfo failed"); torture_comment(tctx, "sleep 5 seconds\n"); smb_msleep(5*1000); torture_comment(tctx, "query info => EXPIRED\n"); ZERO_STRUCT(qfinfo.access_information.out); status = smb_raw_fileinfo(cli->tree, tctx, &qfinfo); torture_assert_ntstatus_equal_goto(tctx, status, NT_STATUS_NETWORK_SESSION_EXPIRED, ret, done, "raw_fileinfo expired"); /* * the krb5 library may not handle expired creds * well, lets start with an empty ccache. */ cli_credentials_invalidate_ccache(credentials, CRED_SPECIFIED); torture_comment(tctx, "reauth with CAP_DYNAMIC_REAUTH => OK\n"); ZERO_STRUCT(io_sesssetup.out); status = smb_composite_sesssetup(cli->session, &io_sesssetup); torture_assert_ntstatus_ok_goto(tctx, status, ret, done, "reauth failed"); torture_assert_int_equal_goto(tctx, io_sesssetup.out.vuid, vuid, ret, done, "reauth"); } torture_comment(tctx, "query info => OK\n"); ZERO_STRUCT(qfinfo.access_information.out); status = smb_raw_fileinfo(cli->tree, tctx, &qfinfo); torture_assert_ntstatus_ok_goto(tctx, status, ret, done, "raw_fileinfo failed"); /* * the krb5 library may not handle expired creds * well, lets start with an empty ccache. */ cli_credentials_invalidate_ccache(credentials, CRED_SPECIFIED); /* * now without CAP_DYNAMIC_REAUTH * * This should not trigger NT_STATUS_NETWORK_SESSION_EXPIRED */ torture_comment(tctx, "reauth without CAP_DYNAMIC_REAUTH => OK\n"); io_sesssetup.in.capabilities &= ~CAP_DYNAMIC_REAUTH; ZERO_STRUCT(io_sesssetup.out); status = smb_composite_sesssetup(cli->session, &io_sesssetup); torture_assert_ntstatus_ok_goto(tctx, status, ret, done, "reauth failed"); torture_assert_int_equal_goto(tctx, io_sesssetup.out.vuid, vuid, ret, done, "reauth"); for (i=0; i < 2; i++) { torture_comment(tctx, "query info => OK\n"); ZERO_STRUCT(qfinfo.access_information.out); status = smb_raw_fileinfo(cli->tree, tctx, &qfinfo); torture_assert_ntstatus_ok_goto(tctx, status, ret, done, "raw_fileinfo failed"); torture_comment(tctx, "sleep 5 seconds\n"); smb_msleep(5*1000); } torture_comment(tctx, "query info => OK\n"); ZERO_STRUCT(qfinfo.access_information.out); status = smb_raw_fileinfo(cli->tree, tctx, &qfinfo); torture_assert_ntstatus_ok_goto(tctx, status, ret, done, "raw_fileinfo failed"); ret = true; done: if (fnum > 0) { smbcli_close(cli->tree, fnum); } talloc_free(cli); lpcfg_set_option(tctx->lp_ctx, "gensec_gssapi:requested_life_time=0"); return ret; }