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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 17:20:00 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 17:20:00 +0000
commit8daa83a594a2e98f39d764422bfbdbc62c9efd44 (patch)
tree4099e8021376c7d8c05bdf8503093d80e9c7bad0 /source3/winbindd/winbindd_pam.c
parentInitial commit. (diff)
downloadsamba-8daa83a594a2e98f39d764422bfbdbc62c9efd44.tar.xz
samba-8daa83a594a2e98f39d764422bfbdbc62c9efd44.zip
Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'source3/winbindd/winbindd_pam.c')
-rw-r--r--source3/winbindd/winbindd_pam.c3616
1 files changed, 3616 insertions, 0 deletions
diff --git a/source3/winbindd/winbindd_pam.c b/source3/winbindd/winbindd_pam.c
new file mode 100644
index 0000000..6c890c8
--- /dev/null
+++ b/source3/winbindd/winbindd_pam.c
@@ -0,0 +1,3616 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ Winbind daemon - pam auth functions
+
+ Copyright (C) Andrew Tridgell 2000
+ Copyright (C) Tim Potter 2001
+ Copyright (C) Andrew Bartlett 2001-2002
+ Copyright (C) Guenther Deschner 2005
+
+ 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 "ntdomain.h"
+#include "winbindd.h"
+#include "libsmb/namequery.h"
+#include "../libcli/auth/libcli_auth.h"
+#include "libcli/auth/pam_errors.h"
+#include "../librpc/gen_ndr/ndr_samr_c.h"
+#include "librpc/rpc/dcesrv_core.h"
+#include "librpc/gen_ndr/ndr_winbind.h"
+#include "rpc_client/cli_pipe.h"
+#include "rpc_client/cli_samr.h"
+#include "../librpc/gen_ndr/ndr_netlogon.h"
+#include "rpc_client/cli_netlogon.h"
+#include "smb_krb5.h"
+#include "../libcli/security/security.h"
+#include "ads.h"
+#include "../librpc/gen_ndr/krb5pac.h"
+#include "passdb/machine_sid.h"
+#include "auth.h"
+#include "../lib/tsocket/tsocket.h"
+#include "auth/kerberos/pac_utils.h"
+#include "auth/gensec/gensec.h"
+#include "librpc/crypto/gse_krb5.h"
+#include "lib/afs/afs_funcs.h"
+#include "libsmb/samlogon_cache.h"
+#include "rpc_client/util_netlogon.h"
+#include "param/param.h"
+#include "messaging/messaging.h"
+#include "lib/util/string_wrappers.h"
+#include "lib/crypto/gnutls_helpers.h"
+
+#include "lib/crypto/gnutls_helpers.h"
+#include <gnutls/crypto.h>
+#include "lib/global_contexts.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_WINBIND
+
+#define LOGON_KRB5_FAIL_CLOCK_SKEW 0x02000000
+
+static NTSTATUS append_info3_as_txt(TALLOC_CTX *mem_ctx,
+ struct winbindd_response *resp,
+ uint16_t validation_level,
+ union netr_Validation *validation)
+{
+ struct netr_SamInfo3 *info3 = NULL;
+ char *ex = NULL;
+ uint32_t i;
+ NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+ TALLOC_CTX *frame = talloc_stackframe();
+
+ status = map_validation_to_info3(frame,
+ validation_level,
+ validation,
+ &info3);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto out;
+ }
+
+ resp->data.auth.info3.logon_time =
+ nt_time_to_unix(info3->base.logon_time);
+ resp->data.auth.info3.logoff_time =
+ nt_time_to_unix(info3->base.logoff_time);
+ resp->data.auth.info3.kickoff_time =
+ nt_time_to_unix(info3->base.kickoff_time);
+ resp->data.auth.info3.pass_last_set_time =
+ nt_time_to_unix(info3->base.last_password_change);
+ resp->data.auth.info3.pass_can_change_time =
+ nt_time_to_unix(info3->base.allow_password_change);
+ resp->data.auth.info3.pass_must_change_time =
+ nt_time_to_unix(info3->base.force_password_change);
+
+ resp->data.auth.info3.logon_count = info3->base.logon_count;
+ resp->data.auth.info3.bad_pw_count = info3->base.bad_password_count;
+
+ resp->data.auth.info3.user_rid = info3->base.rid;
+ resp->data.auth.info3.group_rid = info3->base.primary_gid;
+ sid_to_fstring(resp->data.auth.info3.dom_sid, info3->base.domain_sid);
+
+ resp->data.auth.info3.num_groups = info3->base.groups.count;
+ resp->data.auth.info3.user_flgs = info3->base.user_flags;
+
+ resp->data.auth.info3.acct_flags = info3->base.acct_flags;
+ resp->data.auth.info3.num_other_sids = info3->sidcount;
+
+ fstrcpy(resp->data.auth.info3.user_name,
+ info3->base.account_name.string);
+ fstrcpy(resp->data.auth.info3.full_name,
+ info3->base.full_name.string);
+ fstrcpy(resp->data.auth.info3.logon_script,
+ info3->base.logon_script.string);
+ fstrcpy(resp->data.auth.info3.profile_path,
+ info3->base.profile_path.string);
+ fstrcpy(resp->data.auth.info3.home_dir,
+ info3->base.home_directory.string);
+ fstrcpy(resp->data.auth.info3.dir_drive,
+ info3->base.home_drive.string);
+
+ fstrcpy(resp->data.auth.info3.logon_srv,
+ info3->base.logon_server.string);
+ fstrcpy(resp->data.auth.info3.logon_dom,
+ info3->base.logon_domain.string);
+
+ resp->data.auth.validation_level = validation_level;
+ if (validation_level == 6) {
+ fstrcpy(resp->data.auth.info6.dns_domainname,
+ validation->sam6->dns_domainname.string);
+ fstrcpy(resp->data.auth.info6.principal_name,
+ validation->sam6->principal_name.string);
+ }
+
+ ex = talloc_strdup(frame, "");
+ if (ex == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto out;
+ }
+
+ for (i=0; i < info3->base.groups.count; i++) {
+ ex = talloc_asprintf_append_buffer(ex, "0x%08X:0x%08X\n",
+ info3->base.groups.rids[i].rid,
+ info3->base.groups.rids[i].attributes);
+ if (ex == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto out;
+ }
+ }
+
+ for (i=0; i < info3->sidcount; i++) {
+ struct dom_sid_buf sidbuf;
+
+ ex = talloc_asprintf_append_buffer(
+ ex,
+ "%s:0x%08X\n",
+ dom_sid_str_buf(info3->sids[i].sid, &sidbuf),
+ info3->sids[i].attributes);
+ if (ex == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto out;
+ }
+ }
+
+ resp->length += talloc_get_size(ex);
+ resp->extra_data.data = talloc_move(mem_ctx, &ex);
+
+ status = NT_STATUS_OK;
+out:
+ TALLOC_FREE(frame);
+ return status;
+}
+
+static NTSTATUS append_info3_as_ndr(TALLOC_CTX *mem_ctx,
+ struct winbindd_response *resp,
+ struct netr_SamInfo3 *info3)
+{
+ DATA_BLOB blob;
+ enum ndr_err_code ndr_err;
+
+ ndr_err = ndr_push_struct_blob(&blob, mem_ctx, info3,
+ (ndr_push_flags_fn_t)ndr_push_netr_SamInfo3);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ DEBUG(0,("append_info3_as_ndr: failed to append\n"));
+ return ndr_map_error2ntstatus(ndr_err);
+ }
+
+ resp->extra_data.data = blob.data;
+ resp->length += blob.length;
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS append_unix_username(uint16_t validation_level,
+ union netr_Validation *validation,
+ const char *name_domain,
+ const char *name_user,
+ TALLOC_CTX *mem_ctx,
+ char **_unix_username)
+{
+ TALLOC_CTX *tmp_ctx = NULL;
+ const char *nt_username = NULL;
+ const char *nt_domain = NULL;
+ char *unix_username = NULL;
+ struct netr_SamBaseInfo *base_info = NULL;
+ NTSTATUS status;
+
+ tmp_ctx = talloc_new(mem_ctx);
+ if (tmp_ctx == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* We've been asked to return the unix username, per
+ 'winbind use default domain' settings and the like */
+
+ switch (validation_level) {
+ case 3:
+ base_info = &validation->sam3->base;
+ break;
+ case 6:
+ base_info = &validation->sam6->base;
+ break;
+ default:
+ DBG_ERR("Invalid validation level %d\n", validation_level);
+ status = NT_STATUS_INTERNAL_ERROR;
+ goto out;
+ }
+
+ nt_domain = talloc_strdup(tmp_ctx, base_info->logon_domain.string);
+ if (!nt_domain) {
+ /* If the server didn't give us one, just use the one
+ * we sent them */
+ nt_domain = name_domain;
+ }
+
+ nt_username = talloc_strdup(tmp_ctx, base_info->account_name.string);
+ if (!nt_username) {
+ /* If the server didn't give us one, just use the one
+ * we sent them */
+ nt_username = name_user;
+ }
+
+ unix_username = fill_domain_username_talloc(tmp_ctx,
+ nt_domain,
+ nt_username,
+ true);
+ if (unix_username == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto out;
+ }
+
+ DBG_INFO("Setting unix username to [%s]\n", unix_username);
+
+ *_unix_username = talloc_move(mem_ctx, &unix_username);
+
+ status = NT_STATUS_OK;
+out:
+ TALLOC_FREE(tmp_ctx);
+
+ return status;
+}
+
+static NTSTATUS append_afs_token(uint16_t validation_level,
+ union netr_Validation *validation,
+ const char *name_domain,
+ const char *name_user,
+ TALLOC_CTX *mem_ctx,
+ DATA_BLOB *_blob)
+{
+ TALLOC_CTX *tmp_ctx = NULL;
+ char *afsname = NULL;
+ char *cell;
+ char *token;
+ struct netr_SamBaseInfo *base_info = NULL;
+ NTSTATUS status;
+
+ tmp_ctx = talloc_new(mem_ctx);
+ if (tmp_ctx == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ switch (validation_level) {
+ case 3:
+ base_info = &validation->sam3->base;
+ break;
+ case 6:
+ base_info = &validation->sam6->base;
+ break;
+ default:
+ DBG_ERR("Invalid validation level %d\n", validation_level);
+ status = NT_STATUS_INTERNAL_ERROR;
+ goto out;
+ }
+
+ afsname = talloc_strdup(tmp_ctx, lp_afs_username_map());
+ if (afsname == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto out;
+ }
+
+ afsname = talloc_string_sub(tmp_ctx,
+ lp_afs_username_map(),
+ "%D", name_domain);
+ afsname = talloc_string_sub(tmp_ctx, afsname,
+ "%u", name_user);
+ afsname = talloc_string_sub(tmp_ctx, afsname,
+ "%U", name_user);
+
+ {
+ struct dom_sid user_sid;
+ struct dom_sid_buf sidstr;
+
+ sid_compose(&user_sid, base_info->domain_sid, base_info->rid);
+ afsname = talloc_string_sub(
+ tmp_ctx,
+ afsname,
+ "%s",
+ dom_sid_str_buf(&user_sid, &sidstr));
+ }
+
+ if (afsname == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto out;
+ }
+
+ if (!strlower_m(afsname)) {
+ status = NT_STATUS_INVALID_PARAMETER;
+ goto out;
+ }
+
+ DEBUG(10, ("Generating token for user %s\n", afsname));
+
+ cell = strchr(afsname, '@');
+
+ if (cell == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto out;
+ }
+
+ *cell = '\0';
+ cell += 1;
+
+ token = afs_createtoken_str(afsname, cell);
+ if (token == NULL) {
+ status = NT_STATUS_OK;
+ goto out;
+ }
+
+ talloc_steal(mem_ctx, token);
+ *_blob = data_blob_string_const_null(token);
+
+ status = NT_STATUS_OK;
+out:
+ TALLOC_FREE(tmp_ctx);
+
+ return status;
+}
+
+NTSTATUS extra_data_to_sid_array(const char *group_sid,
+ TALLOC_CTX *mem_ctx,
+ struct wbint_SidArray **_sid_array)
+{
+ TALLOC_CTX *tmp_ctx = NULL;
+ struct wbint_SidArray *sid_array = NULL;
+ struct dom_sid *require_membership_of_sid = NULL;
+ uint32_t num_require_membership_of_sid = 0;
+ char *req_sid = NULL;
+ const char *p = NULL;
+ NTSTATUS status;
+
+ if (_sid_array == NULL) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ *_sid_array = NULL;
+
+ tmp_ctx = talloc_new(mem_ctx);
+ if (tmp_ctx == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ sid_array = talloc_zero(tmp_ctx, struct wbint_SidArray);
+ if (sid_array == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto fail;
+ }
+
+ if (!group_sid || !group_sid[0]) {
+ /* NO sid supplied, all users may access */
+ status = NT_STATUS_OK;
+ /*
+ * Always return an allocated wbint_SidArray,
+ * even if the array is empty.
+ */
+ goto out;
+ }
+
+ num_require_membership_of_sid = 0;
+ require_membership_of_sid = NULL;
+ p = group_sid;
+
+ while (next_token_talloc(tmp_ctx, &p, &req_sid, ",")) {
+ struct dom_sid sid;
+
+ if (!string_to_sid(&sid, req_sid)) {
+ DBG_ERR("check_info3_in_group: could not parse %s "
+ "as a SID!\n", req_sid);
+ status = NT_STATUS_INVALID_PARAMETER;
+ goto fail;
+ }
+
+ status = add_sid_to_array(tmp_ctx, &sid,
+ &require_membership_of_sid,
+ &num_require_membership_of_sid);
+ if (!NT_STATUS_IS_OK(status)) {
+ DBG_ERR("add_sid_to_array failed\n");
+ goto fail;
+ }
+ }
+
+ sid_array->num_sids = num_require_membership_of_sid;
+ sid_array->sids = talloc_move(sid_array, &require_membership_of_sid);
+
+ status = NT_STATUS_OK;
+out:
+ *_sid_array = talloc_move(mem_ctx, &sid_array);
+
+fail:
+ TALLOC_FREE(tmp_ctx);
+
+ return status;
+}
+
+static NTSTATUS check_info3_in_group(struct netr_SamInfo3 *info3,
+ struct wbint_SidArray *sid_array)
+/**
+ * Check whether a user belongs to a group or list of groups.
+ *
+ * @param mem_ctx talloc memory context.
+ * @param info3 user information, including group membership info.
+ * @param group_sid One or more groups , separated by commas.
+ *
+ * @return NT_STATUS_OK on success,
+ * NT_STATUS_LOGON_FAILURE if the user does not belong,
+ * or other NT_STATUS_IS_ERR(status) for other kinds of failure.
+ */
+{
+ size_t i;
+ struct security_token *token;
+ NTSTATUS status;
+
+ /* Parse the 'required group' SID */
+
+ if (sid_array == NULL || sid_array->num_sids == 0) {
+ /* NO sid supplied, all users may access */
+ return NT_STATUS_OK;
+ }
+
+ /*
+ * This is a limited-use security_token for the purpose of
+ * checking the SID list below, so no claims need to be added
+ * and se_access_check() will never run.
+ */
+ token = security_token_initialise(talloc_tos(),
+ CLAIMS_EVALUATION_INVALID_STATE);
+ if (token == NULL) {
+ DEBUG(0, ("talloc failed\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ status = sid_array_from_info3(token, info3,
+ &token->sids,
+ &token->num_sids,
+ true);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ if (!NT_STATUS_IS_OK(status = add_aliases(get_global_sam_sid(),
+ token))
+ || !NT_STATUS_IS_OK(status = add_aliases(&global_sid_Builtin,
+ token))) {
+ DEBUG(3, ("could not add aliases: %s\n",
+ nt_errstr(status)));
+ return status;
+ }
+
+ security_token_debug(DBGC_CLASS, 10, token);
+
+ for (i=0; i<sid_array->num_sids; i++) {
+ struct dom_sid_buf buf;
+ DEBUG(10, ("Checking SID %s\n",
+ dom_sid_str_buf(&sid_array->sids[i],
+ &buf)));
+ if (nt_token_check_sid(&sid_array->sids[i],
+ token)) {
+ DEBUG(10, ("Access ok\n"));
+ return NT_STATUS_OK;
+ }
+ }
+
+ /* Do not distinguish this error from a wrong username/pw */
+
+ return NT_STATUS_LOGON_FAILURE;
+}
+
+struct winbindd_domain *find_auth_domain(uint8_t flags,
+ const char *domain_name)
+{
+ struct winbindd_domain *domain;
+
+ if (IS_DC) {
+ domain = find_domain_from_name_noinit(domain_name);
+ if (domain == NULL) {
+ DEBUG(3, ("Authentication for domain [%s] refused "
+ "as it is not a trusted domain\n",
+ domain_name));
+ return NULL;
+ }
+
+ if (domain->secure_channel_type != SEC_CHAN_NULL) {
+ return domain;
+ }
+
+ return domain->routing_domain;
+ }
+
+ if (strequal(domain_name, get_global_sam_name())) {
+ return find_domain_from_name_noinit(domain_name);
+ }
+
+ if (lp_winbind_use_krb5_enterprise_principals()) {
+ /*
+ * If we use enterprise principals
+ * we always go through our primary domain
+ * and follow the WRONG_REALM replies.
+ */
+ flags &= ~WBFLAG_PAM_CONTACT_TRUSTDOM;
+ }
+
+ /* we can auth against trusted domains */
+ if (flags & WBFLAG_PAM_CONTACT_TRUSTDOM) {
+ domain = find_domain_from_name_noinit(domain_name);
+ if (domain == NULL) {
+ DEBUG(3, ("Authentication for domain [%s] skipped "
+ "as it is not a trusted domain\n",
+ domain_name));
+ } else {
+ return domain;
+ }
+ }
+
+ return find_our_domain();
+}
+
+static NTSTATUS get_password_policy(struct winbindd_domain *domain,
+ TALLOC_CTX *mem_ctx,
+ struct samr_DomInfo1 **_policy)
+{
+ NTSTATUS status;
+ struct samr_DomInfo1 *policy = NULL;
+
+ if ( !winbindd_can_contact_domain( domain ) ) {
+ DBG_INFO("No inbound trust to contact domain %s\n",
+ domain->name);
+ return NT_STATUS_NOT_SUPPORTED;
+ }
+
+ policy = talloc_zero(mem_ctx, struct samr_DomInfo1);
+ if (policy == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ status = wb_cache_password_policy(domain, mem_ctx, policy);
+ if (NT_STATUS_IS_ERR(status)) {
+ TALLOC_FREE(policy);
+ return status;
+ }
+
+ *_policy = talloc_move(mem_ctx, &policy);
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS get_max_bad_attempts_from_lockout_policy(struct winbindd_domain *domain,
+ TALLOC_CTX *mem_ctx,
+ uint16_t *lockout_threshold)
+{
+ NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+ struct samr_DomInfo12 lockout_policy;
+
+ *lockout_threshold = 0;
+
+ status = wb_cache_lockout_policy(domain, mem_ctx, &lockout_policy);
+ if (NT_STATUS_IS_ERR(status)) {
+ return status;
+ }
+
+ *lockout_threshold = lockout_policy.lockout_threshold;
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS get_pwd_properties(struct winbindd_domain *domain,
+ TALLOC_CTX *mem_ctx,
+ uint32_t *password_properties)
+{
+ NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+ struct samr_DomInfo1 password_policy;
+
+ *password_properties = 0;
+
+ status = wb_cache_password_policy(domain, mem_ctx, &password_policy);
+ if (NT_STATUS_IS_ERR(status)) {
+ return status;
+ }
+
+ *password_properties = password_policy.password_properties;
+
+ return NT_STATUS_OK;
+}
+
+#ifdef HAVE_KRB5
+
+static const char *generate_krb5_ccache(TALLOC_CTX *mem_ctx,
+ const char *type,
+ uid_t uid,
+ const char **user_ccache_file)
+{
+ /* accept FILE and WRFILE as krb5_cc_type from the client and then
+ * build the full ccname string based on the user's uid here -
+ * Guenther*/
+
+ const char *gen_cc = NULL;
+
+ if (uid != -1) {
+ if (strequal(type, "FILE")) {
+ gen_cc = talloc_asprintf(
+ mem_ctx, "FILE:/tmp/krb5cc_%d", uid);
+ }
+ if (strequal(type, "WRFILE")) {
+ gen_cc = talloc_asprintf(
+ mem_ctx, "WRFILE:/tmp/krb5cc_%d", uid);
+ }
+ if (strequal(type, "KEYRING")) {
+ gen_cc = talloc_asprintf(
+ mem_ctx, "KEYRING:persistent:%d", uid);
+ }
+ if (strequal(type, "KCM")) {
+ gen_cc = talloc_asprintf(mem_ctx,
+ "KCM:%d",
+ uid);
+ }
+
+ if (strnequal(type, "FILE:/", 6) ||
+ strnequal(type, "WRFILE:/", 8) ||
+ strnequal(type, "DIR:/", 5)) {
+
+ /* we allow only one "%u" substitution */
+
+ char *p;
+
+ p = strchr(type, '%');
+ if (p != NULL) {
+
+ p++;
+
+ if (p != NULL && *p == 'u' && strchr(p, '%') == NULL) {
+ char uid_str[sizeof("18446744073709551615")];
+
+ snprintf(uid_str, sizeof(uid_str), "%u", uid);
+
+ gen_cc = talloc_string_sub2(mem_ctx,
+ type,
+ "%u",
+ uid_str,
+ /* remove_unsafe_characters */
+ false,
+ /* replace_once */
+ true,
+ /* allow_trailing_dollar */
+ false);
+ }
+ }
+ }
+ }
+
+ *user_ccache_file = gen_cc;
+
+ if (gen_cc == NULL) {
+ gen_cc = talloc_strdup(mem_ctx, "MEMORY:winbindd_pam_ccache");
+ }
+ if (gen_cc == NULL) {
+ DEBUG(0,("out of memory\n"));
+ return NULL;
+ }
+
+ DEBUG(10, ("using ccache: %s%s\n", gen_cc,
+ (*user_ccache_file == NULL) ? " (internal)":""));
+
+ return gen_cc;
+}
+
+#endif
+
+uid_t get_uid_from_request(struct winbindd_request *request)
+{
+ uid_t uid;
+
+ uid = request->data.auth.uid;
+
+ if (uid == (uid_t)-1) {
+ DEBUG(1,("invalid uid: '%u'\n", (unsigned int)uid));
+ return -1;
+ }
+ return uid;
+}
+
+/**********************************************************************
+ Authenticate a user with a clear text password using Kerberos and fill up
+ ccache if required
+ **********************************************************************/
+
+static NTSTATUS winbindd_raw_kerberos_login(TALLOC_CTX *mem_ctx,
+ struct winbindd_domain *domain,
+ const char *user,
+ const char *pass,
+ const char *krb5_cc_type,
+ uid_t uid,
+ struct netr_SamInfo6 **info6,
+ const char **_krb5ccname)
+{
+#ifdef HAVE_KRB5
+ NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
+ krb5_error_code krb5_ret;
+ const char *cc = NULL;
+ const char *principal_s = NULL;
+ char *realm = NULL;
+ char *name_namespace = NULL;
+ char *name_domain = NULL;
+ char *name_user = NULL;
+ time_t ticket_lifetime = 0;
+ time_t renewal_until = 0;
+ time_t time_offset = 0;
+ const char *user_ccache_file;
+ struct PAC_LOGON_INFO *logon_info = NULL;
+ struct PAC_UPN_DNS_INFO *upn_dns_info = NULL;
+ struct PAC_DATA *pac_data = NULL;
+ struct PAC_DATA_CTR *pac_data_ctr = NULL;
+ const char *local_service;
+ uint32_t i;
+ struct netr_SamInfo6 *info6_copy = NULL;
+ char *canon_principal = NULL;
+ char *canon_realm = NULL;
+ bool ok;
+
+ *info6 = NULL;
+
+ if (domain->alt_name == NULL) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (_krb5ccname != NULL) {
+ *_krb5ccname = NULL;
+ }
+
+ /* 1st step:
+ * prepare a krb5_cc_cache string for the user */
+
+ if (uid == -1) {
+ DEBUG(0,("no valid uid\n"));
+ }
+
+ cc = generate_krb5_ccache(mem_ctx,
+ krb5_cc_type,
+ uid,
+ &user_ccache_file);
+ if (cc == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+
+ /* 2nd step:
+ * get kerberos properties */
+
+ if (domain->backend_data.ads_conn != NULL) {
+ time_offset = domain->backend_data.ads_conn->auth.time_offset;
+ }
+
+
+ /* 3rd step:
+ * do kerberos auth and setup ccache as the user */
+
+ ok = parse_domain_user(mem_ctx,
+ user,
+ &name_namespace,
+ &name_domain,
+ &name_user);
+ if (!ok) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ realm = talloc_strdup(mem_ctx, domain->alt_name);
+ if (realm == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (!strupper_m(realm)) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (lp_winbind_use_krb5_enterprise_principals() &&
+ name_namespace[0] != '\0')
+ {
+ principal_s = talloc_asprintf(mem_ctx,
+ "%s@%s@%s",
+ name_user,
+ name_namespace,
+ realm);
+ } else {
+ principal_s = talloc_asprintf(mem_ctx,
+ "%s@%s",
+ name_user,
+ realm);
+ }
+ if (principal_s == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ local_service = talloc_asprintf(mem_ctx, "%s$@%s",
+ lp_netbios_name(), lp_realm());
+ if (local_service == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+
+ /* if this is a user ccache, we need to act as the user to let the krb5
+ * library handle the chown, etc. */
+
+ /************************ ENTERING NON-ROOT **********************/
+
+ if (user_ccache_file != NULL) {
+ set_effective_uid(uid);
+ DEBUG(10,("winbindd_raw_kerberos_login: uid is %d\n", uid));
+ }
+
+ result = kerberos_return_pac(mem_ctx,
+ principal_s,
+ pass,
+ time_offset,
+ &ticket_lifetime,
+ &renewal_until,
+ cc,
+ true,
+ true,
+ WINBINDD_PAM_AUTH_KRB5_RENEW_TIME,
+ NULL,
+ local_service,
+ &canon_principal,
+ &canon_realm,
+ &pac_data_ctr);
+ if (user_ccache_file != NULL) {
+ gain_root_privilege();
+ }
+
+ /************************ RETURNED TO ROOT **********************/
+
+ if (!NT_STATUS_IS_OK(result)) {
+ goto failed;
+ }
+
+ if (pac_data_ctr == NULL) {
+ goto failed;
+ }
+
+ pac_data = pac_data_ctr->pac_data;
+ if (pac_data == NULL) {
+ goto failed;
+ }
+
+ for (i=0; i < pac_data->num_buffers; i++) {
+
+ if (pac_data->buffers[i].type == PAC_TYPE_LOGON_INFO) {
+ logon_info = pac_data->buffers[i].info->logon_info.info;
+ continue;
+ }
+
+ if (pac_data->buffers[i].type == PAC_TYPE_UPN_DNS_INFO) {
+ upn_dns_info = &pac_data->buffers[i].info->upn_dns_info;
+ continue;
+ }
+ }
+
+ if (logon_info == NULL) {
+ DEBUG(10,("Missing logon_info in ticket of %s\n",
+ principal_s));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ DEBUG(10,("winbindd_raw_kerberos_login: winbindd validated ticket of %s\n",
+ principal_s));
+
+ result = create_info6_from_pac(mem_ctx, logon_info,
+ upn_dns_info, &info6_copy);
+ if (!NT_STATUS_IS_OK(result)) {
+ goto failed;
+ }
+
+ /* if we had a user's ccache then return that string for the pam
+ * environment */
+
+ if (user_ccache_file != NULL) {
+
+ if (_krb5ccname != NULL) {
+ *_krb5ccname = talloc_steal(mem_ctx, user_ccache_file);
+ }
+
+ result = add_ccache_to_list(principal_s,
+ cc,
+ user,
+ pass,
+ realm,
+ uid,
+ time(NULL),
+ ticket_lifetime,
+ renewal_until,
+ false,
+ canon_principal,
+ canon_realm);
+
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(10,("winbindd_raw_kerberos_login: failed to add ccache to list: %s\n",
+ nt_errstr(result)));
+ }
+ } else {
+
+ /* need to delete the memory cred cache, it is not used anymore */
+
+ krb5_ret = ads_kdestroy(cc);
+ if (krb5_ret) {
+ DEBUG(3,("winbindd_raw_kerberos_login: "
+ "could not destroy krb5 credential cache: "
+ "%s\n", error_message(krb5_ret)));
+ }
+
+ }
+ *info6 = info6_copy;
+ return NT_STATUS_OK;
+
+failed:
+ /*
+ * Do not delete an existing valid credential cache, if the user
+ * e.g. enters a wrong password
+ */
+ if ((strequal(krb5_cc_type, "FILE") || strequal(krb5_cc_type, "WRFILE"))
+ && user_ccache_file != NULL) {
+ return result;
+ }
+
+ /* we could have created a new credential cache with a valid tgt in it
+ * but we weren't able to get or verify the service ticket for this
+ * local host and therefore didn't get the PAC, we need to remove that
+ * cache entirely now */
+
+ krb5_ret = ads_kdestroy(cc);
+ if (krb5_ret) {
+ DEBUG(3,("winbindd_raw_kerberos_login: "
+ "could not destroy krb5 credential cache: "
+ "%s\n", error_message(krb5_ret)));
+ }
+
+ if (!NT_STATUS_IS_OK(remove_ccache(user))) {
+ DEBUG(3,("winbindd_raw_kerberos_login: "
+ "could not remove ccache for user %s\n",
+ user));
+ }
+
+ return result;
+#else
+ return NT_STATUS_NOT_SUPPORTED;
+#endif /* HAVE_KRB5 */
+}
+
+/****************************************************************
+****************************************************************/
+
+bool check_request_flags(uint32_t flags)
+{
+ uint32_t flags_edata = WBFLAG_PAM_AFS_TOKEN |
+ WBFLAG_PAM_INFO3_TEXT |
+ WBFLAG_PAM_INFO3_NDR;
+
+ if ( ( (flags & flags_edata) == WBFLAG_PAM_AFS_TOKEN) ||
+ ( (flags & flags_edata) == WBFLAG_PAM_INFO3_NDR) ||
+ ( (flags & flags_edata) == WBFLAG_PAM_INFO3_TEXT)||
+ !(flags & flags_edata) ) {
+ return true;
+ }
+
+ DEBUG(1, ("check_request_flags: invalid request flags[0x%08X]\n",
+ flags));
+
+ return false;
+}
+
+/****************************************************************
+****************************************************************/
+
+NTSTATUS append_auth_data(TALLOC_CTX *mem_ctx,
+ struct winbindd_response *resp,
+ uint32_t request_flags,
+ uint16_t validation_level,
+ union netr_Validation *validation,
+ const char *name_domain,
+ const char *name_user)
+{
+ struct netr_SamInfo3 *info3 = NULL;
+ NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
+
+ result = map_validation_to_info3(talloc_tos(),
+ validation_level,
+ validation,
+ &info3);
+ if (!NT_STATUS_IS_OK(result)) {
+ goto out;
+ }
+
+ if (request_flags & WBFLAG_PAM_USER_SESSION_KEY) {
+ memcpy(resp->data.auth.user_session_key,
+ info3->base.key.key,
+ sizeof(resp->data.auth.user_session_key)
+ /* 16 */);
+ }
+
+ if (request_flags & WBFLAG_PAM_LMKEY) {
+ memcpy(resp->data.auth.first_8_lm_hash,
+ info3->base.LMSessKey.key,
+ sizeof(resp->data.auth.first_8_lm_hash)
+ /* 8 */);
+ }
+
+ if (request_flags & WBFLAG_PAM_UNIX_NAME) {
+ char *unix_username = NULL;
+ result = append_unix_username(validation_level,
+ validation,
+ name_domain,
+ name_user,
+ mem_ctx,
+ &unix_username);
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(10,("Failed to append Unix Username: %s\n",
+ nt_errstr(result)));
+ goto out;
+ }
+ fstrcpy(resp->data.auth.unix_username, unix_username);
+ TALLOC_FREE(unix_username);
+ }
+
+ /* currently, anything from here on potentially overwrites extra_data. */
+
+ if (request_flags & WBFLAG_PAM_INFO3_NDR) {
+ result = append_info3_as_ndr(mem_ctx, resp, info3);
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(10,("Failed to append INFO3 (NDR): %s\n",
+ nt_errstr(result)));
+ goto out;
+ }
+ }
+
+ if (request_flags & WBFLAG_PAM_INFO3_TEXT) {
+ result = append_info3_as_txt(mem_ctx, resp,
+ validation_level,
+ validation);
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(10,("Failed to append INFO3 (TXT): %s\n",
+ nt_errstr(result)));
+ goto out;
+ }
+ }
+
+ if (request_flags & WBFLAG_PAM_AFS_TOKEN) {
+ DATA_BLOB blob = data_blob_null;
+ result = append_afs_token(validation_level,
+ validation,
+ name_domain,
+ name_user,
+ mem_ctx,
+ &blob);
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(10,("Failed to append AFS token: %s\n",
+ nt_errstr(result)));
+ goto out;
+ }
+ resp->extra_data.data = blob.data;
+ resp->length += blob.length;
+ }
+
+ result = NT_STATUS_OK;
+out:
+ TALLOC_FREE(info3);
+ return result;
+}
+
+static NTSTATUS winbindd_dual_pam_auth_cached(struct winbindd_domain *domain,
+ bool krb5_auth,
+ const char *user,
+ const char *pass,
+ const char *krb5_cc_type,
+ uid_t uid,
+ TALLOC_CTX *mem_ctx,
+ uint16_t *_validation_level,
+ union netr_Validation **_validation,
+ const char **_krb5ccname)
+{
+ TALLOC_CTX *tmp_ctx = NULL;
+ NTSTATUS result = NT_STATUS_LOGON_FAILURE;
+ uint16_t max_allowed_bad_attempts;
+ char *name_namespace = NULL;
+ char *name_domain = NULL;
+ char *name_user = NULL;
+ struct dom_sid sid;
+ enum lsa_SidType type;
+ uchar new_nt_pass[NT_HASH_LEN];
+ const uint8_t *cached_nt_pass;
+ const uint8_t *cached_salt;
+ struct netr_SamInfo3 *my_info3;
+ time_t kickoff_time, must_change_time;
+ bool password_good = false;
+ bool ok;
+#ifdef HAVE_KRB5
+ struct winbindd_tdc_domain *tdc_domain = NULL;
+#endif
+
+ if (_validation == NULL) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ *_validation = NULL;
+
+ if (_krb5ccname != NULL) {
+ *_krb5ccname = NULL;
+ }
+
+ DEBUG(10,("winbindd_dual_pam_auth_cached\n"));
+
+ tmp_ctx = talloc_new(mem_ctx);
+ if (tmp_ctx == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* Parse domain and username */
+
+ ok = parse_domain_user(tmp_ctx,
+ user,
+ &name_namespace,
+ &name_domain,
+ &name_user);
+ if (!ok) {
+ DBG_DEBUG("parse_domain_user failed\n");
+ result = NT_STATUS_NO_SUCH_USER;
+ goto out;
+ }
+
+ if (!lookup_cached_name(name_namespace,
+ name_domain,
+ name_user,
+ &sid,
+ &type)) {
+ DEBUG(10,("winbindd_dual_pam_auth_cached: no such user in the cache\n"));
+ result = NT_STATUS_NO_SUCH_USER;
+ goto out;
+ }
+
+ if (type != SID_NAME_USER) {
+ DEBUG(10,("winbindd_dual_pam_auth_cached: not a user (%s)\n", sid_type_lookup(type)));
+ result = NT_STATUS_LOGON_FAILURE;
+ goto out;
+ }
+
+ result = winbindd_get_creds(domain,
+ tmp_ctx,
+ &sid,
+ &my_info3,
+ &cached_nt_pass,
+ &cached_salt);
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(10,("winbindd_dual_pam_auth_cached: failed to get creds: %s\n", nt_errstr(result)));
+ goto out;
+ }
+
+ E_md4hash(pass, new_nt_pass);
+
+ dump_data_pw("new_nt_pass", new_nt_pass, NT_HASH_LEN);
+ dump_data_pw("cached_nt_pass", cached_nt_pass, NT_HASH_LEN);
+ if (cached_salt) {
+ dump_data_pw("cached_salt", cached_salt, NT_HASH_LEN);
+ }
+
+ if (cached_salt) {
+ /* In this case we didn't store the nt_hash itself,
+ but the MD5 combination of salt + nt_hash. */
+ uchar salted_hash[NT_HASH_LEN];
+ gnutls_hash_hd_t hash_hnd = NULL;
+ int rc;
+
+ rc = gnutls_hash_init(&hash_hnd, GNUTLS_DIG_MD5);
+ if (rc < 0) {
+ result = gnutls_error_to_ntstatus(
+ rc, NT_STATUS_HASH_NOT_SUPPORTED);
+ goto out;
+ }
+
+ rc = gnutls_hash(hash_hnd, cached_salt, 16);
+ if (rc < 0) {
+ gnutls_hash_deinit(hash_hnd, NULL);
+ result = gnutls_error_to_ntstatus(
+ rc, NT_STATUS_HASH_NOT_SUPPORTED);
+ goto out;
+ }
+ rc = gnutls_hash(hash_hnd, new_nt_pass, 16);
+ if (rc < 0) {
+ gnutls_hash_deinit(hash_hnd, NULL);
+ result = gnutls_error_to_ntstatus(
+ rc, NT_STATUS_HASH_NOT_SUPPORTED);
+ goto out;
+ }
+ gnutls_hash_deinit(hash_hnd, salted_hash);
+
+ password_good = mem_equal_const_time(cached_nt_pass, salted_hash,
+ NT_HASH_LEN);
+ } else {
+ /* Old cached cred - direct store of nt_hash (bad bad bad !). */
+ password_good = mem_equal_const_time(cached_nt_pass, new_nt_pass,
+ NT_HASH_LEN);
+ }
+
+ if (password_good) {
+
+ /* User *DOES* know the password, update logon_time and reset
+ * bad_pw_count */
+
+ my_info3->base.user_flags |= NETLOGON_CACHED_ACCOUNT;
+
+ if (my_info3->base.acct_flags & ACB_AUTOLOCK) {
+ result = NT_STATUS_ACCOUNT_LOCKED_OUT;
+ goto out;
+ }
+
+ if (my_info3->base.acct_flags & ACB_DISABLED) {
+ result = NT_STATUS_ACCOUNT_DISABLED;
+ goto out;
+ }
+
+ if (my_info3->base.acct_flags & ACB_WSTRUST) {
+ result = NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT;
+ goto out;
+ }
+
+ if (my_info3->base.acct_flags & ACB_SVRTRUST) {
+ result = NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT;
+ goto out;
+ }
+
+ if (my_info3->base.acct_flags & ACB_DOMTRUST) {
+ result = NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT;
+ goto out;
+ }
+
+ if (!(my_info3->base.acct_flags & ACB_NORMAL)) {
+ DEBUG(0,("winbindd_dual_pam_auth_cached: what's wrong with that one?: 0x%08x\n",
+ my_info3->base.acct_flags));
+ result = NT_STATUS_LOGON_FAILURE;
+ goto out;
+ }
+
+ kickoff_time = nt_time_to_unix(my_info3->base.kickoff_time);
+ if (kickoff_time != 0 && time(NULL) > kickoff_time) {
+ result = NT_STATUS_ACCOUNT_EXPIRED;
+ goto out;
+ }
+
+ must_change_time = nt_time_to_unix(my_info3->base.force_password_change);
+ if (must_change_time != 0 && must_change_time < time(NULL)) {
+ /* we allow grace logons when the password has expired */
+ my_info3->base.user_flags |= NETLOGON_GRACE_LOGON;
+ /* return NT_STATUS_PASSWORD_EXPIRED; */
+ goto success;
+ }
+
+#ifdef HAVE_KRB5
+ if ((krb5_auth) &&
+ ((tdc_domain = wcache_tdc_fetch_domain(tmp_ctx, name_domain)) != NULL) &&
+ ((tdc_domain->trust_type & LSA_TRUST_TYPE_UPLEVEL) ||
+ /* used to cope with the case winbindd starting without network. */
+ !strequal(tdc_domain->domain_name, tdc_domain->dns_name))) {
+ const char *cc = NULL;
+ char *realm = NULL;
+ const char *principal_s = NULL;
+ const char *user_ccache_file;
+
+ if (domain->alt_name == NULL) {
+ result = NT_STATUS_INVALID_PARAMETER;
+ goto out;
+ }
+
+ if (uid == -1) {
+ DEBUG(0,("winbindd_dual_pam_auth_cached: invalid uid\n"));
+ result = NT_STATUS_INVALID_PARAMETER;
+ goto out;
+ }
+
+ cc = generate_krb5_ccache(tmp_ctx,
+ krb5_cc_type,
+ uid,
+ &user_ccache_file);
+ if (cc == NULL) {
+ result = NT_STATUS_NO_MEMORY;
+ goto out;
+ }
+
+ realm = talloc_strdup(tmp_ctx, domain->alt_name);
+ if (realm == NULL) {
+ result = NT_STATUS_NO_MEMORY;
+ goto out;
+ }
+
+ if (!strupper_m(realm)) {
+ result = NT_STATUS_INVALID_PARAMETER;
+ goto out;
+ }
+
+ principal_s = talloc_asprintf(tmp_ctx, "%s@%s", name_user, realm);
+ if (principal_s == NULL) {
+ result = NT_STATUS_NO_MEMORY;
+ goto out;
+ }
+
+ if (user_ccache_file != NULL) {
+
+ if (_krb5ccname != NULL) {
+ *_krb5ccname = talloc_move(mem_ctx,
+ &user_ccache_file);
+ }
+
+ result = add_ccache_to_list(principal_s,
+ cc,
+ user,
+ pass,
+ realm,
+ uid,
+ time(NULL),
+ time(NULL) + lp_winbind_cache_time(),
+ time(NULL) + WINBINDD_PAM_AUTH_KRB5_RENEW_TIME,
+ true,
+ principal_s,
+ realm);
+
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(10,("winbindd_dual_pam_auth_cached: failed "
+ "to add ccache to list: %s\n",
+ nt_errstr(result)));
+ }
+ }
+ }
+#endif /* HAVE_KRB5 */
+ success:
+ /* FIXME: we possibly should handle logon hours as well (does xp when
+ * offline?) see auth/auth_sam.c:sam_account_ok for details */
+
+ unix_to_nt_time(&my_info3->base.logon_time, time(NULL));
+ my_info3->base.bad_password_count = 0;
+
+ result = winbindd_update_creds_by_info3(domain,
+ user,
+ pass,
+ my_info3);
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(1,("winbindd_dual_pam_auth_cached: failed to update creds: %s\n",
+ nt_errstr(result)));
+ goto out;
+ }
+
+ result = map_info3_to_validation(mem_ctx,
+ my_info3,
+ _validation_level,
+ _validation);
+ if (!NT_STATUS_IS_OK(result)) {
+ DBG_ERR("map_info3_to_validation failed: %s\n",
+ nt_errstr(result));
+ goto out;
+ }
+
+ result = NT_STATUS_OK;
+ goto out;
+ }
+
+ /* User does *NOT* know the correct password, modify info3 accordingly, but only if online */
+ if (domain->online == false) {
+ goto failed;
+ }
+
+ /* failure of this is not critical */
+ result = get_max_bad_attempts_from_lockout_policy(domain, tmp_ctx, &max_allowed_bad_attempts);
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(10,("winbindd_dual_pam_auth_cached: failed to get max_allowed_bad_attempts. "
+ "Won't be able to honour account lockout policies\n"));
+ }
+
+ /* increase counter */
+ my_info3->base.bad_password_count++;
+
+ if (max_allowed_bad_attempts == 0) {
+ goto failed;
+ }
+
+ /* lockout user */
+ if (my_info3->base.bad_password_count >= max_allowed_bad_attempts) {
+
+ uint32_t password_properties;
+
+ result = get_pwd_properties(domain, tmp_ctx, &password_properties);
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(10,("winbindd_dual_pam_auth_cached: failed to get password properties.\n"));
+ }
+
+ if ((my_info3->base.rid != DOMAIN_RID_ADMINISTRATOR) ||
+ (password_properties & DOMAIN_PASSWORD_LOCKOUT_ADMINS)) {
+ my_info3->base.acct_flags |= ACB_AUTOLOCK;
+ }
+ }
+
+failed:
+ result = winbindd_update_creds_by_info3(domain, user, NULL, my_info3);
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(0,("winbindd_dual_pam_auth_cached: failed to update creds %s\n",
+ nt_errstr(result)));
+ }
+
+ result = NT_STATUS_LOGON_FAILURE;
+
+out:
+ TALLOC_FREE(tmp_ctx);
+
+ return result;
+}
+
+static NTSTATUS winbindd_dual_pam_auth_kerberos(struct winbindd_domain *domain,
+ const char *user,
+ const char *pass,
+ const char *krb5_cc_type,
+ uid_t uid,
+ TALLOC_CTX *mem_ctx,
+ uint16_t *_validation_level,
+ union netr_Validation **_validation,
+ const char **_krb5ccname)
+{
+ struct netr_SamInfo6 *info6 = NULL;
+ struct winbindd_domain *contact_domain;
+ char *name_namespace = NULL;
+ char *name_domain = NULL;
+ char *name_user = NULL;
+ NTSTATUS result;
+ bool ok;
+
+ DEBUG(10,("winbindd_dual_pam_auth_kerberos\n"));
+
+ /* Parse domain and username */
+
+ ok = parse_domain_user(mem_ctx,
+ user,
+ &name_namespace,
+ &name_domain,
+ &name_user);
+ if (!ok) {
+ result = NT_STATUS_INVALID_PARAMETER;
+ goto done;
+ }
+
+ /* what domain should we contact? */
+
+ if (lp_winbind_use_krb5_enterprise_principals()) {
+ contact_domain = find_auth_domain(0, name_namespace);
+ } else {
+ contact_domain = find_domain_from_name(name_namespace);
+ }
+ if (contact_domain == NULL) {
+ DEBUG(3, ("Authentication for domain for [%s] -> [%s]\\[%s] failed as %s is not a trusted domain\n",
+ user, name_domain, name_user, name_namespace));
+ result = NT_STATUS_NO_SUCH_USER;
+ goto done;
+ }
+
+ if (contact_domain->initialized &&
+ contact_domain->active_directory) {
+ goto try_login;
+ }
+
+ if (!contact_domain->initialized) {
+ init_dc_connection(contact_domain, false);
+ }
+
+ if (!contact_domain->active_directory) {
+ DEBUG(3,("krb5 auth requested but domain (%s) is not Active Directory\n",
+ contact_domain->name));
+ return NT_STATUS_INVALID_LOGON_TYPE;
+ }
+try_login:
+ result = winbindd_raw_kerberos_login(
+ mem_ctx,
+ contact_domain,
+ user,
+ pass,
+ krb5_cc_type,
+ uid,
+ &info6,
+ _krb5ccname);
+ if (!NT_STATUS_IS_OK(result)) {
+ goto done;
+ }
+
+ result = map_info6_to_validation(mem_ctx,
+ info6,
+ _validation_level,
+ _validation);
+ TALLOC_FREE(info6);
+ if (!NT_STATUS_IS_OK(result)) {
+ DBG_ERR("map_info6_to_validation failed: %s\n",
+ nt_errstr(result));
+ }
+
+done:
+ return result;
+}
+
+static NTSTATUS winbindd_dual_auth_passdb(TALLOC_CTX *mem_ctx,
+ uint32_t logon_parameters,
+ const char *domain,
+ const char *user,
+ const uint64_t logon_id,
+ const char *client_name,
+ const int client_pid,
+ const DATA_BLOB *challenge,
+ const DATA_BLOB *lm_resp,
+ const DATA_BLOB *nt_resp,
+ const struct tsocket_address *remote,
+ const struct tsocket_address *local,
+ bool interactive,
+ uint8_t *pauthoritative,
+ struct netr_SamInfo3 **pinfo3)
+{
+ struct auth_context *auth_context;
+ struct auth_serversupplied_info *server_info;
+ struct auth_usersupplied_info *user_info = NULL;
+ struct netr_SamInfo3 *info3;
+ NTSTATUS status;
+ bool ok;
+ TALLOC_CTX *frame = talloc_stackframe();
+
+ /*
+ * We are authoritative by default
+ */
+ *pauthoritative = 1;
+
+ status = make_user_info(frame, &user_info, user, user, domain, domain,
+ lp_netbios_name(), remote, local,
+ "winbind",
+ lm_resp, nt_resp, NULL, NULL,
+ NULL, AUTH_PASSWORD_RESPONSE);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10, ("make_user_info failed: %s\n", nt_errstr(status)));
+ TALLOC_FREE(frame);
+ return status;
+ }
+
+ user_info->logon_parameters = logon_parameters;
+ user_info->logon_id = logon_id;
+ user_info->auth_description = talloc_asprintf(
+ frame, "PASSDB, %s, %d", client_name, client_pid);
+ if (user_info->auth_description == NULL) {
+ TALLOC_FREE(frame);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* We don't want to come back to winbindd or to do PAM account checks */
+ user_info->flags |= USER_INFO_INFO3_AND_NO_AUTHZ;
+
+ if (interactive) {
+ user_info->flags |= USER_INFO_INTERACTIVE_LOGON;
+ }
+
+ status = make_auth3_context_for_winbind(frame, &auth_context);
+ if (!NT_STATUS_IS_OK(status)) {
+ DBG_ERR("make_auth3_context_for_winbind failed: %s\n",
+ nt_errstr(status));
+ TALLOC_FREE(frame);
+ return status;
+ }
+
+ ok = auth3_context_set_challenge(auth_context,
+ challenge->data, "fixed");
+ if (!ok) {
+ TALLOC_FREE(frame);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ status = auth_check_ntlm_password(mem_ctx,
+ auth_context,
+ user_info,
+ &server_info,
+ pauthoritative);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(frame);
+ return status;
+ }
+
+ info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
+ if (info3 == NULL) {
+ TALLOC_FREE(frame);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ status = serverinfo_to_SamInfo3(server_info, info3);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(frame);
+ TALLOC_FREE(info3);
+ DEBUG(0, ("serverinfo_to_SamInfo3 failed: %s\n",
+ nt_errstr(status)));
+ return status;
+ }
+
+ *pinfo3 = info3;
+ DBG_DEBUG("Authenticating user %s\\%s returned %s\n",
+ domain,
+ user,
+ nt_errstr(status));
+ TALLOC_FREE(frame);
+ return status;
+}
+
+static NTSTATUS winbind_samlogon_retry_loop(struct winbindd_domain *domain,
+ TALLOC_CTX *mem_ctx,
+ uint32_t logon_parameters,
+ const char *username,
+ const char *password,
+ const char *domainname,
+ const char *workstation,
+ const uint64_t logon_id,
+ bool plaintext_given,
+ DATA_BLOB chal,
+ DATA_BLOB lm_response,
+ DATA_BLOB nt_response,
+ bool interactive,
+ uint8_t *authoritative,
+ uint32_t *flags,
+ uint16_t *_validation_level,
+ union netr_Validation **_validation)
+{
+ int attempts = 0;
+ int netr_attempts = 0;
+ bool retry = false;
+ bool valid_result = false;
+ NTSTATUS result;
+ enum netr_LogonInfoClass logon_type_i;
+ enum netr_LogonInfoClass logon_type_n;
+ uint16_t validation_level = UINT16_MAX;
+ union netr_Validation *validation = NULL;
+ TALLOC_CTX *base_ctx = NULL;
+ struct netr_SamBaseInfo *base_info = NULL;
+
+ do {
+ struct rpc_pipe_client *netlogon_pipe;
+ struct netlogon_creds_cli_context *netlogon_creds_ctx = NULL;
+
+ /*
+ * We should always reset authoritative to 1
+ * before calling a server again.
+ *
+ * Otherwise we could treat a local problem as
+ * non-authoritative.
+ */
+ *authoritative = 1;
+
+ retry = false;
+
+ D_DEBUG("Creating a DCERPC netlogon connection for SAM logon. "
+ "netlogon attempt: %d, samlogon attempt: %d.\n",
+ netr_attempts,
+ attempts);
+ result = cm_connect_netlogon_secure(domain, &netlogon_pipe,
+ &netlogon_creds_ctx);
+
+ if (NT_STATUS_EQUAL(result,
+ NT_STATUS_CANT_ACCESS_DOMAIN_INFO)) {
+ /*
+ * This means we don't have a trust account.
+ */
+ *authoritative = 0;
+ result = NT_STATUS_NO_SUCH_USER;
+ break;
+ }
+
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(3,("Could not open handle to NETLOGON pipe "
+ "(error: %s, attempts: %d)\n",
+ nt_errstr(result), netr_attempts));
+
+ reset_cm_connection_on_error(domain, NULL, result);
+
+ /* After the first retry always close the connection */
+ if (netr_attempts > 0) {
+ DEBUG(3, ("This is again a problem for this "
+ "particular call, forcing the close "
+ "of this connection\n"));
+ invalidate_cm_connection(domain);
+ }
+
+ /* After the second retry failover to the next DC */
+ if (netr_attempts > 1) {
+ /*
+ * If the netlogon server is not reachable then
+ * it is possible that the DC is rebuilding
+ * sysvol and shutdown netlogon for that time.
+ * We should failover to the next dc.
+ */
+ DEBUG(3, ("This is the third problem for this "
+ "particular call, adding DC to the "
+ "negative cache list: %s %s\n", domain->name, domain->dcname));
+ add_failed_connection_entry(domain->name,
+ domain->dcname,
+ result);
+ saf_delete(domain->name);
+ }
+
+ /* Only allow 3 retries */
+ if (netr_attempts < 3) {
+ DEBUG(3, ("The connection to netlogon "
+ "failed, retrying\n"));
+ netr_attempts++;
+ retry = true;
+ continue;
+ }
+ return result;
+ }
+
+ logon_type_i = NetlogonInteractiveInformation;
+ logon_type_n = NetlogonNetworkInformation;
+ if (domain->domain_trust_attribs & LSA_TRUST_ATTRIBUTE_WITHIN_FOREST) {
+ logon_type_i = NetlogonInteractiveTransitiveInformation;
+ logon_type_n = NetlogonNetworkTransitiveInformation;
+ }
+
+ if (domain->domain_trust_attribs & LSA_TRUST_ATTRIBUTE_FOREST_TRANSITIVE) {
+ logon_type_i = NetlogonInteractiveTransitiveInformation;
+ logon_type_n = NetlogonNetworkTransitiveInformation;
+ }
+
+ if (domain->domain_trust_attribs & LSA_TRUST_ATTRIBUTE_NON_TRANSITIVE) {
+ logon_type_i = NetlogonInteractiveInformation;
+ logon_type_n = NetlogonNetworkInformation;
+ }
+
+ if (domain->domain_trust_attribs & LSA_TRUST_ATTRIBUTE_QUARANTINED_DOMAIN) {
+ logon_type_i = NetlogonInteractiveInformation;
+ logon_type_n = NetlogonNetworkInformation;
+ }
+
+ netr_attempts = 0;
+ if (plaintext_given) {
+ result = rpccli_netlogon_password_logon(
+ netlogon_creds_ctx,
+ netlogon_pipe->binding_handle,
+ mem_ctx,
+ logon_parameters,
+ domainname,
+ username,
+ password,
+ workstation,
+ logon_id,
+ logon_type_i,
+ authoritative,
+ flags,
+ &validation_level,
+ &validation);
+ } else if (interactive) {
+ result = rpccli_netlogon_interactive_logon(
+ netlogon_creds_ctx,
+ netlogon_pipe->binding_handle,
+ mem_ctx,
+ logon_parameters,
+ username,
+ domainname,
+ workstation,
+ logon_id,
+ lm_response,
+ nt_response,
+ logon_type_i,
+ authoritative,
+ flags,
+ &validation_level,
+ &validation);
+ } else {
+ result = rpccli_netlogon_network_logon(
+ netlogon_creds_ctx,
+ netlogon_pipe->binding_handle,
+ mem_ctx,
+ logon_parameters,
+ username,
+ domainname,
+ workstation,
+ logon_id,
+ chal,
+ lm_response,
+ nt_response,
+ logon_type_n,
+ authoritative,
+ flags,
+ &validation_level,
+ &validation);
+ }
+
+ /*
+ * we increment this after the "feature negotiation"
+ * for can_do_samlogon_ex and can_do_validation6
+ */
+ attempts += 1;
+
+ /* We have to try a second time as cm_connect_netlogon
+ might not yet have noticed that the DC has killed
+ our connection. */
+
+ retry = reset_cm_connection_on_error(domain,
+ netlogon_pipe->binding_handle,
+ result);
+ if (retry) {
+ DBG_PREFIX(attempts > 1 ? DBGLVL_NOTICE : DBGLVL_INFO, (
+ "This is problem %d for this "
+ "particular call,"
+ "DOMAIN[%s] DC[%s] - %s\n",
+ attempts,
+ domain->name,
+ domain->dcname,
+ nt_errstr(result)));
+ continue;
+ }
+
+ valid_result = true;
+
+ if (NT_STATUS_EQUAL(result, NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE)) {
+ /*
+ * Got DCERPC_FAULT_OP_RNG_ERROR for SamLogon
+ * (no Ex). This happens against old Samba
+ * DCs, if LogonSamLogonEx() fails with an error
+ * e.g. NT_STATUS_NO_SUCH_USER or NT_STATUS_WRONG_PASSWORD.
+ *
+ * The server will log something like this:
+ * api_net_sam_logon_ex: Failed to marshall NET_R_SAM_LOGON_EX.
+ *
+ * This sets the whole connection into a fault_state mode
+ * and all following request get NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE.
+ *
+ * This also happens to our retry with LogonSamLogonWithFlags()
+ * and LogonSamLogon().
+ *
+ * In order to recover from this situation, we need to
+ * drop the connection.
+ */
+ invalidate_cm_connection(domain);
+ result = NT_STATUS_LOGON_FAILURE;
+ break;
+ }
+
+ } while ( (attempts < 3) && retry );
+
+ if (!valid_result) {
+ /*
+ * This matches what windows does. In a chain of transitive
+ * trusts the ACCESS_DENIED/authoritative=0 is not propagated
+ * instead of NT_STATUS_NO_LOGON_SERVERS/authoritative=1 is
+ * passed along the chain if there's no other DC is available.
+ */
+ DBG_WARNING("Mapping %s/authoritative=%u to "
+ "NT_STATUS_NO_LOGON_SERVERS/authoritative=1 for"
+ "USERNAME[%s] USERDOMAIN[%s] REMOTE-DOMAIN[%s] \n",
+ nt_errstr(result),
+ *authoritative,
+ username,
+ domainname,
+ domain->name);
+ *authoritative = 1;
+ return NT_STATUS_NO_LOGON_SERVERS;
+ }
+
+ if (!NT_STATUS_IS_OK(result)) {
+ return result;
+ }
+
+ switch (validation_level) {
+ case 3:
+ base_ctx = validation->sam3;
+ base_info = &validation->sam3->base;
+ break;
+ case 6:
+ base_ctx = validation->sam6;
+ base_info = &validation->sam6->base;
+ break;
+ default:
+ smb_panic(__location__);
+ }
+
+ if (base_info->acct_flags == 0 || base_info->account_name.string == NULL) {
+ struct dom_sid user_sid;
+ struct dom_sid_buf sid_buf;
+ const char *acct_flags_src = "server";
+ const char *acct_name_src = "server";
+
+ /*
+ * Handle the case where a NT4 DC does not fill in the acct_flags in
+ * the samlogon reply info3. Yes, in 2021, there are still admins
+ * around with real NT4 DCs.
+ *
+ * We used to call dcerpc_samr_QueryUserInfo(level=16) to fetch
+ * acct_flags, but as NT4 DCs reject authentication with workstation
+ * accounts with NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT, even if
+ * MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT is specified, we only ever got
+ * ACB_NORMAL back (maybe with ACB_PWNOEXP in addition).
+ *
+ * For network logons NT4 DCs also skip the
+ * account_name, so we have to fallback to the
+ * one given by the client.
+ */
+
+ if (base_info->acct_flags == 0) {
+ base_info->acct_flags = ACB_NORMAL;
+ if (base_info->force_password_change == NTTIME_MAX) {
+ base_info->acct_flags |= ACB_PWNOEXP;
+ }
+ acct_flags_src = "calculated";
+ }
+
+ if (base_info->account_name.string == NULL) {
+ base_info->account_name.string = talloc_strdup(base_ctx,
+ username);
+ if (base_info->account_name.string == NULL) {
+ TALLOC_FREE(validation);
+ return NT_STATUS_NO_MEMORY;
+ }
+ acct_name_src = "client";
+ }
+
+ sid_compose(&user_sid, base_info->domain_sid, base_info->rid);
+
+ DBG_DEBUG("Fallback to %s_acct_flags[0x%x] %s_acct_name[%s] for %s\n",
+ acct_flags_src,
+ base_info->acct_flags,
+ acct_name_src,
+ base_info->account_name.string,
+ dom_sid_str_buf(&user_sid, &sid_buf));
+ }
+
+ *_validation_level = validation_level;
+ *_validation = validation;
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS nt_dual_auth_passdb(TALLOC_CTX *mem_ctx,
+ fstring name_user,
+ fstring name_domain,
+ const char *pass,
+ uint64_t logon_id,
+ const char *client_name,
+ const int client_pid,
+ const struct tsocket_address *remote,
+ const struct tsocket_address *local,
+ uint8_t *authoritative,
+ struct netr_SamInfo3 **info3)
+{
+ unsigned char local_nt_response[24];
+ uchar chal[8];
+ DATA_BLOB chal_blob;
+ DATA_BLOB lm_resp;
+ DATA_BLOB nt_resp;
+
+ /* do password magic */
+
+ generate_random_buffer(chal, sizeof(chal));
+ chal_blob = data_blob_const(chal, sizeof(chal));
+
+ if (lp_client_ntlmv2_auth()) {
+ DATA_BLOB server_chal;
+ DATA_BLOB names_blob;
+ server_chal = data_blob_const(chal, 8);
+
+ /* note that the 'workgroup' here is for the local
+ machine. The 'server name' must match the
+ 'workstation' passed to the actual SamLogon call.
+ */
+ names_blob = NTLMv2_generate_names_blob(mem_ctx,
+ lp_netbios_name(),
+ lp_workgroup());
+
+ if (!SMBNTLMv2encrypt(mem_ctx, name_user, name_domain,
+ pass, &server_chal, &names_blob,
+ &lm_resp, &nt_resp, NULL, NULL)) {
+ data_blob_free(&names_blob);
+ DEBUG(0, ("SMBNTLMv2encrypt() failed!\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+ data_blob_free(&names_blob);
+ } else {
+ int rc;
+ lm_resp = data_blob_null;
+
+ rc = SMBNTencrypt(pass, chal, local_nt_response);
+ if (rc != 0) {
+ DEBUG(0, ("SMBNTencrypt() failed!\n"));
+ return gnutls_error_to_ntstatus(rc,
+ NT_STATUS_ACCESS_DISABLED_BY_POLICY_OTHER);
+ }
+
+ nt_resp = data_blob_talloc(mem_ctx, local_nt_response,
+ sizeof(local_nt_response));
+ }
+
+ return winbindd_dual_auth_passdb(talloc_tos(), 0, name_domain,
+ name_user, logon_id, client_name,
+ client_pid, &chal_blob, &lm_resp,
+ &nt_resp, remote, local,
+ true, /* interactive */
+ authoritative, info3);
+}
+
+static NTSTATUS winbindd_dual_pam_auth_samlogon(
+ TALLOC_CTX *mem_ctx,
+ struct winbindd_domain *domain,
+ const char *user,
+ const char *pass,
+ uint64_t logon_id,
+ const char *client_name,
+ const int client_pid,
+ uint32_t request_flags,
+ const struct tsocket_address *remote,
+ const struct tsocket_address *local,
+ uint16_t *_validation_level,
+ union netr_Validation **_validation)
+{
+ char *name_namespace = NULL;
+ char *name_domain = NULL;
+ char *name_user = NULL;
+ NTSTATUS result;
+ uint8_t authoritative = 1;
+ uint32_t flags = 0;
+ uint16_t validation_level = 0;
+ union netr_Validation *validation = NULL;
+ bool ok;
+
+ DEBUG(10,("winbindd_dual_pam_auth_samlogon\n"));
+
+ /* Parse domain and username */
+
+ ok = parse_domain_user(mem_ctx,
+ user,
+ &name_namespace,
+ &name_domain,
+ &name_user);
+ if (!ok) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /*
+ * We check against domain->name instead of
+ * name_domain, as find_auth_domain() ->
+ * find_domain_from_name_noinit() already decided
+ * that we are in a child for the correct domain.
+ *
+ * name_domain can also be lp_realm()
+ * we need to check against domain->name.
+ */
+ if (strequal(domain->name, get_global_sam_name())) {
+ struct netr_SamInfo3 *info3 = NULL;
+
+ result = nt_dual_auth_passdb(mem_ctx, name_user, name_domain,
+ pass, logon_id, client_name,
+ client_pid, remote, local,
+ &authoritative, &info3);
+
+ /*
+ * We need to try the remote NETLOGON server if this is
+ * not authoritative (for example on the RODC).
+ */
+ if (authoritative != 0) {
+ if (!NT_STATUS_IS_OK(result)) {
+ return result;
+ }
+ result = map_info3_to_validation(mem_ctx,
+ info3,
+ &validation_level,
+ &validation);
+ TALLOC_FREE(info3);
+ if (!NT_STATUS_IS_OK(result)) {
+ return result;
+ }
+
+ goto done;
+ }
+ }
+
+ /* check authentication loop */
+
+ result = winbind_samlogon_retry_loop(domain,
+ mem_ctx,
+ 0,
+ name_user,
+ pass,
+ name_domain,
+ lp_netbios_name(),
+ logon_id,
+ true, /* plaintext_given */
+ data_blob_null,
+ data_blob_null, data_blob_null,
+ true, /* interactive */
+ &authoritative,
+ &flags,
+ &validation_level,
+ &validation);
+ if (!NT_STATUS_IS_OK(result)) {
+ return result;
+ }
+
+done:
+ *_validation_level = validation_level;
+ *_validation = validation;
+
+ return NT_STATUS_OK;
+}
+
+/*
+ * @brief generate an authentication message in the logs.
+ *
+ */
+static void log_authentication(
+ TALLOC_CTX *mem_ctx,
+ const struct winbindd_domain *domain,
+ const char *client_name,
+ pid_t client_pid,
+ uint16_t validation_level,
+ union netr_Validation *validation,
+ const struct timeval start_time,
+ const uint64_t logon_id,
+ const char *command,
+ const char *user_name,
+ const char *domain_name,
+ const char *workstation,
+ const DATA_BLOB lm_resp,
+ const DATA_BLOB nt_resp,
+ const struct tsocket_address *remote,
+ const struct tsocket_address *local,
+ NTSTATUS result)
+{
+ struct auth_usersupplied_info *ui = NULL;
+ struct dom_sid *sid = NULL;
+ struct loadparm_context *lp_ctx = NULL;
+ struct imessaging_context *msg_ctx = NULL;
+ struct netr_SamBaseInfo *base_info = NULL;
+
+ if (validation != NULL) {
+ switch (validation_level) {
+ case 3:
+ base_info = &validation->sam3->base;
+ break;
+ case 6:
+ base_info = &validation->sam6->base;
+ break;
+ default:
+ DBG_WARNING("Unexpected validation level '%d'\n",
+ validation_level);
+ break;
+ }
+ }
+
+ ui = talloc_zero(mem_ctx, struct auth_usersupplied_info);
+ ui->logon_id = logon_id;
+ ui->service_description = "winbind";
+ ui->password.response.nt.length = nt_resp.length;
+ ui->password.response.nt.data = nt_resp.data;
+ ui->password.response.lanman.length = lm_resp.length;
+ ui->password.response.lanman.data = lm_resp.data;
+ if (nt_resp.length == 0 && lm_resp.length == 0) {
+ ui->password_state = AUTH_PASSWORD_PLAIN;
+ } else {
+ ui->password_state = AUTH_PASSWORD_RESPONSE;
+ }
+ /*
+ * In the event of a failure ui->auth_description will be null,
+ * the logging code handles this correctly so it can be ignored.
+ */
+ ui->auth_description = talloc_asprintf(
+ ui,
+ "%s, %s, %d",
+ command,
+ client_name,
+ client_pid);
+ if (ui->auth_description == NULL) {
+ DBG_ERR("OOM Unable to create auth_description\n");
+ }
+ ui->client.account_name = user_name;
+ ui->client.domain_name = domain_name;
+ ui->workstation_name = workstation;
+ ui->remote_host = remote;
+ ui->local_host = local;
+
+ if (base_info != NULL) {
+ sid = dom_sid_dup(ui, base_info->domain_sid);
+ if (sid != NULL) {
+ sid_append_rid(sid, base_info->rid);
+ }
+ }
+
+ if (lp_auth_event_notification()) {
+ lp_ctx = loadparm_init_s3(ui, loadparm_s3_helpers());
+ msg_ctx = imessaging_client_init(
+ ui, lp_ctx, global_event_context());
+ }
+ log_authentication_event(
+ msg_ctx,
+ lp_ctx,
+ &start_time,
+ ui,
+ result,
+ base_info != NULL ? base_info->logon_domain.string : "",
+ base_info != NULL ? base_info->account_name.string : "",
+ sid,
+ NULL /* client_audit_info */,
+ NULL /* server_audit_info */);
+ TALLOC_FREE(ui);
+}
+
+NTSTATUS _wbint_PamAuth(struct pipes_struct *p,
+ struct wbint_PamAuth *r)
+{
+ struct winbindd_domain *domain = wb_child_domain();
+ NTSTATUS result = NT_STATUS_LOGON_FAILURE;
+ NTSTATUS krb5_result = NT_STATUS_OK;
+ char *name_namespace = NULL;
+ char *name_domain = NULL;
+ char *name_user = NULL;
+ char *mapped_user = NULL;
+ const char *domain_user = NULL;
+ uint16_t validation_level = UINT16_MAX;
+ union netr_Validation *validation = NULL;
+ struct netr_SamBaseInfo *base_info = NULL;
+ NTSTATUS name_map_status = NT_STATUS_UNSUCCESSFUL;
+ bool ok;
+ uint64_t logon_id = 0;
+ const struct timeval start_time = timeval_current();
+ const struct tsocket_address *remote = NULL;
+ const struct tsocket_address *local = NULL;
+ const char *krb5ccname = NULL;
+ uid_t uid;
+ pid_t client_pid;
+
+ if (domain == NULL) {
+ return NT_STATUS_REQUEST_NOT_ACCEPTED;
+ }
+
+ /* Cut client_pid to 32bit */
+ client_pid = r->in.client_pid;
+ if ((uint64_t)client_pid != r->in.client_pid) {
+ DBG_DEBUG("pid out of range\n");
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* Cut uid to 32bit */
+ uid = r->in.info->uid;
+ if ((uint64_t)uid != r->in.info->uid) {
+ DBG_DEBUG("uid out of range\n");
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /*
+ * Generate a logon_id for this session.
+ */
+ logon_id = generate_random_u64();
+ remote = dcesrv_connection_get_remote_address(p->dce_call->conn);
+ local = dcesrv_connection_get_local_address(p->dce_call->conn);
+ DEBUG(3, ("[%"PRIu32"]: dual pam auth %s\n", client_pid,
+ r->in.info->username));
+
+ /* Parse domain and username */
+
+ name_map_status = normalize_name_unmap(p->mem_ctx,
+ r->in.info->username,
+ &mapped_user);
+
+ /* If the name normalization didn't actually do anything,
+ just use the original name */
+
+ if (!NT_STATUS_IS_OK(name_map_status) &&
+ !NT_STATUS_EQUAL(name_map_status, NT_STATUS_FILE_RENAMED))
+ {
+ mapped_user = discard_const(r->in.info->username);
+ }
+
+ ok = parse_domain_user(p->mem_ctx,
+ mapped_user,
+ &name_namespace,
+ &name_domain,
+ &name_user);
+ if (!ok) {
+ result = NT_STATUS_INVALID_PARAMETER;
+ goto done;
+ }
+
+ if (mapped_user != r->in.info->username) {
+ domain_user = talloc_asprintf(talloc_tos(),
+ "%s%c%s",
+ name_domain,
+ *lp_winbind_separator(),
+ name_user);
+ if (domain_user == NULL) {
+ result = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+ r->in.info->username = domain_user;
+ }
+
+ if (!domain->online) {
+ result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
+ if (domain->startup) {
+ /* Logons are very important to users. If we're offline and
+ we get a request within the first 30 seconds of startup,
+ try very hard to find a DC and go online. */
+
+ DEBUG(10,("winbindd_dual_pam_auth: domain: %s offline and auth "
+ "request in startup mode.\n", domain->name ));
+
+ winbindd_flush_negative_conn_cache(domain);
+ result = init_dc_connection(domain, false);
+ }
+ }
+
+ DEBUG(10,("winbindd_dual_pam_auth: domain: %s last was %s\n", domain->name, domain->online ? "online":"offline"));
+
+ /* Check for Kerberos authentication */
+ if (domain->online && (r->in.flags & WBFLAG_PAM_KRB5)) {
+ result = winbindd_dual_pam_auth_kerberos(
+ domain,
+ r->in.info->username,
+ r->in.info->password,
+ r->in.info->krb5_cc_type,
+ uid,
+ p->mem_ctx,
+ &validation_level,
+ &validation,
+ &krb5ccname);
+
+ /* save for later */
+ krb5_result = result;
+
+ if (NT_STATUS_IS_OK(result)) {
+ DEBUG(10,("winbindd_dual_pam_auth_kerberos succeeded\n"));
+ goto process_result;
+ }
+
+ DBG_DEBUG("winbindd_dual_pam_auth_kerberos failed: %s\n",
+ nt_errstr(result));
+
+ if (NT_STATUS_EQUAL(result, NT_STATUS_NO_LOGON_SERVERS) ||
+ NT_STATUS_EQUAL(result, NT_STATUS_IO_TIMEOUT) ||
+ NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND)) {
+ DEBUG(10,("winbindd_dual_pam_auth_kerberos setting domain to offline\n"));
+ set_domain_offline( domain );
+ goto cached_logon;
+ }
+
+ /* there are quite some NT_STATUS errors where there is no
+ * point in retrying with a samlogon, we explicitly have to take
+ * care not to increase the bad logon counter on the DC */
+
+ if (NT_STATUS_EQUAL(result, NT_STATUS_ACCOUNT_DISABLED) ||
+ NT_STATUS_EQUAL(result, NT_STATUS_ACCOUNT_EXPIRED) ||
+ NT_STATUS_EQUAL(result, NT_STATUS_ACCOUNT_LOCKED_OUT) ||
+ NT_STATUS_EQUAL(result, NT_STATUS_INVALID_LOGON_HOURS) ||
+ NT_STATUS_EQUAL(result, NT_STATUS_INVALID_WORKSTATION) ||
+ NT_STATUS_EQUAL(result, NT_STATUS_LOGON_FAILURE) ||
+ NT_STATUS_EQUAL(result, NT_STATUS_NO_SUCH_USER) ||
+ NT_STATUS_EQUAL(result, NT_STATUS_PASSWORD_EXPIRED) ||
+ NT_STATUS_EQUAL(result, NT_STATUS_PASSWORD_MUST_CHANGE) ||
+ NT_STATUS_EQUAL(result, NT_STATUS_WRONG_PASSWORD)) {
+ goto done;
+ }
+
+ if (r->in.flags & WBFLAG_PAM_FALLBACK_AFTER_KRB5) {
+ DEBUG(3,("falling back to samlogon\n"));
+ goto sam_logon;
+ } else {
+ goto cached_logon;
+ }
+ }
+
+sam_logon:
+ /* Check for Samlogon authentication */
+ if (domain->online) {
+ result = winbindd_dual_pam_auth_samlogon(
+ p->mem_ctx,
+ domain,
+ r->in.info->username,
+ r->in.info->password,
+ logon_id,
+ r->in.client_name,
+ client_pid,
+ r->in.flags,
+ remote,
+ local,
+ &validation_level,
+ &validation);
+
+ if (NT_STATUS_IS_OK(result)) {
+ DEBUG(10,("winbindd_dual_pam_auth_samlogon succeeded\n"));
+
+ switch (validation_level) {
+ case 3:
+ base_info = &validation->sam3->base;
+ break;
+ case 6:
+ base_info = &validation->sam6->base;
+ break;
+ default:
+ DBG_ERR("Bad validation level %d\n",
+ validation_level);
+ result = NT_STATUS_INTERNAL_ERROR;
+ goto done;
+ }
+
+ /* add the Krb5 err if we have one */
+ if ( NT_STATUS_EQUAL(krb5_result, NT_STATUS_TIME_DIFFERENCE_AT_DC ) ) {
+ base_info->user_flags |= LOGON_KRB5_FAIL_CLOCK_SKEW;
+ }
+
+ goto process_result;
+ }
+
+ DEBUG(10,("winbindd_dual_pam_auth_samlogon failed: %s\n",
+ nt_errstr(result)));
+
+ if (NT_STATUS_EQUAL(result, NT_STATUS_NO_LOGON_SERVERS) ||
+ NT_STATUS_EQUAL(result, NT_STATUS_IO_TIMEOUT) ||
+ NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND))
+ {
+ DEBUG(10,("winbindd_dual_pam_auth_samlogon setting domain to offline\n"));
+ set_domain_offline( domain );
+ goto cached_logon;
+ }
+
+ if (domain->online) {
+ /* We're still online - fail. */
+ goto done;
+ }
+ }
+
+cached_logon:
+ /* Check for Cached logons */
+ if (!domain->online && (r->in.flags & WBFLAG_PAM_CACHED_LOGIN) &&
+ lp_winbind_offline_logon()) {
+ result = winbindd_dual_pam_auth_cached(domain,
+ (r->in.flags & WBFLAG_PAM_KRB5),
+ r->in.info->username,
+ r->in.info->password,
+ r->in.info->krb5_cc_type,
+ uid,
+ p->mem_ctx,
+ &validation_level,
+ &validation,
+ &krb5ccname);
+
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(10,("winbindd_dual_pam_auth_cached failed: %s\n", nt_errstr(result)));
+ goto done;
+ }
+ DEBUG(10,("winbindd_dual_pam_auth_cached succeeded\n"));
+ }
+
+process_result:
+
+ if (NT_STATUS_IS_OK(result)) {
+ struct dom_sid user_sid;
+ TALLOC_CTX *base_ctx = NULL;
+ struct netr_SamInfo3 *info3 = NULL;
+
+ switch (validation_level) {
+ case 3:
+ base_ctx = validation->sam3;
+ base_info = &validation->sam3->base;
+ break;
+ case 6:
+ base_ctx = validation->sam6;
+ base_info = &validation->sam6->base;
+ break;
+ default:
+ DBG_ERR("Bad validation level %d\n", validation_level);
+ result = NT_STATUS_INTERNAL_ERROR;
+ goto done;
+ }
+
+ sid_compose(&user_sid, base_info->domain_sid, base_info->rid);
+
+ if (base_info->full_name.string == NULL) {
+ struct netr_SamInfo3 *cached_info3;
+
+ cached_info3 = netsamlogon_cache_get(p->mem_ctx,
+ &user_sid);
+ if (cached_info3 != NULL &&
+ cached_info3->base.full_name.string != NULL) {
+ base_info->full_name.string = talloc_strdup(
+ base_ctx,
+ cached_info3->base.full_name.string);
+ if (base_info->full_name.string == NULL) {
+ result = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+ } else {
+
+ /* this might fail so we don't check the return code */
+ wcache_query_user_fullname(domain,
+ base_ctx,
+ &user_sid,
+ &base_info->full_name.string);
+ }
+ }
+
+ result = map_validation_to_info3(talloc_tos(),
+ validation_level,
+ validation,
+ &info3);
+ if (!NT_STATUS_IS_OK(result)) {
+ goto done;
+ }
+
+ wcache_invalidate_samlogon(find_domain_from_name(name_domain),
+ &user_sid);
+ netsamlogon_cache_store(name_user, info3);
+
+ /* save name_to_sid info as early as possible (only if
+ this is our primary domain so we don't invalidate
+ the cache entry by storing the seq_num for the wrong
+ domain). */
+ if ( domain->primary ) {
+ cache_name2sid(domain, name_domain, name_user,
+ SID_NAME_USER, &user_sid);
+ }
+
+ /* Check if the user is in the right group */
+
+ result = check_info3_in_group(info3,
+ r->in.require_membership_of_sid);
+ if (!NT_STATUS_IS_OK(result)) {
+ char *s = NDR_PRINT_STRUCT_STRING(p->mem_ctx,
+ wbint_SidArray,
+ r->in.require_membership_of_sid);
+ DBG_NOTICE("User %s is not in the required groups:\n",
+ r->in.info->username);
+ DEBUGADD(DBGLVL_NOTICE, ("%s", s));
+ DEBUGADD(DBGLVL_NOTICE,
+ ("Plaintext authentication is rejected\n"));
+ goto done;
+ }
+
+ if (!is_allowed_domain(info3->base.logon_domain.string)) {
+ DBG_NOTICE("Authentication failed for user [%s] "
+ "from firewalled domain [%s]\n",
+ info3->base.account_name.string,
+ info3->base.logon_domain.string);
+ result = NT_STATUS_AUTHENTICATION_FIREWALL_FAILED;
+ goto done;
+ }
+
+ r->out.validation = talloc_zero(p->mem_ctx,
+ struct wbint_Validation);
+ if (r->out.validation == NULL) {
+ result = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+
+ r->out.validation->level = validation_level;
+ r->out.validation->validation = talloc_steal(r->out.validation,
+ validation);
+ r->out.validation->krb5ccname = talloc_steal(r->out.validation,
+ krb5ccname);
+ if ((r->in.flags & WBFLAG_PAM_CACHED_LOGIN)
+ && lp_winbind_offline_logon()) {
+
+ result = winbindd_store_creds(domain,
+ r->in.info->username,
+ r->in.info->password,
+ info3);
+ }
+
+ result = NT_STATUS_OK;
+ }
+
+done:
+ /* give us a more useful (more correct?) error code */
+ if ((NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND) ||
+ (NT_STATUS_EQUAL(result, NT_STATUS_UNSUCCESSFUL)))) {
+ result = NT_STATUS_NO_LOGON_SERVERS;
+ }
+
+ DBG_PREFIX(NT_STATUS_IS_OK(result) ? 5 : 2,
+ ("Plain-text authentication for user %s returned %s"
+ " (PAM: %d)\n",
+ r->in.info->username,
+ nt_errstr(result),
+ nt_status_to_pam(result)));
+
+ /*
+ * Log the winbind pam authentication, the logon_id will tie this to
+ * any of the logons invoked from this request.
+ */
+
+ log_authentication(
+ p->mem_ctx,
+ domain,
+ r->in.client_name,
+ client_pid,
+ validation_level,
+ validation,
+ start_time,
+ logon_id,
+ "PAM_AUTH",
+ name_user,
+ name_domain,
+ NULL,
+ data_blob_null,
+ data_blob_null,
+ remote,
+ local,
+ result);
+
+ if (NT_STATUS_IS_OK(result)) {
+ gpupdate_user_init(r->in.info->username);
+ }
+
+ return result;
+}
+
+NTSTATUS winbind_dual_SamLogon(struct winbindd_domain *domain,
+ TALLOC_CTX *mem_ctx,
+ bool interactive,
+ uint32_t logon_parameters,
+ const char *name_user,
+ const char *name_domain,
+ const char *workstation,
+ const uint64_t logon_id,
+ const char* client_name,
+ const int client_pid,
+ DATA_BLOB chal_blob,
+ DATA_BLOB lm_response,
+ DATA_BLOB nt_response,
+ const struct tsocket_address *remote,
+ const struct tsocket_address *local,
+ uint8_t *authoritative,
+ bool skip_sam,
+ uint32_t *flags,
+ uint16_t *_validation_level,
+ union netr_Validation **_validation)
+{
+ uint16_t validation_level = 0;
+ union netr_Validation *validation = NULL;
+ NTSTATUS result;
+
+ /*
+ * We check against domain->name instead of
+ * name_domain, as find_auth_domain() ->
+ * find_domain_from_name_noinit() already decided
+ * that we are in a child for the correct domain.
+ *
+ * name_domain can also be lp_realm()
+ * we need to check against domain->name.
+ */
+ if (!skip_sam && strequal(domain->name, get_global_sam_name())) {
+ struct netr_SamInfo3 *info3 = NULL;
+
+ result = winbindd_dual_auth_passdb(
+ talloc_tos(),
+ logon_parameters,
+ name_domain, name_user,
+ logon_id,
+ client_name,
+ client_pid,
+ &chal_blob, &lm_response, &nt_response,
+ remote,
+ local,
+ interactive,
+ authoritative,
+ &info3);
+ if (NT_STATUS_IS_OK(result)) {
+ result = map_info3_to_validation(mem_ctx,
+ info3,
+ &validation_level,
+ &validation);
+ TALLOC_FREE(info3);
+ if (!NT_STATUS_IS_OK(result)) {
+ goto done;
+ }
+ }
+
+ /*
+ * We need to try the remote NETLOGON server if this is
+ * not authoritative.
+ */
+ if (*authoritative != 0) {
+ *flags = 0;
+ goto process_result;
+ }
+ }
+
+ result = winbind_samlogon_retry_loop(domain,
+ mem_ctx,
+ logon_parameters,
+ name_user,
+ NULL, /* password */
+ name_domain,
+ /* Bug #3248 - found by Stefan Burkei. */
+ workstation, /* We carefully set this above so use it... */
+ logon_id,
+ false, /* plaintext_given */
+ chal_blob,
+ lm_response,
+ nt_response,
+ interactive,
+ authoritative,
+ flags,
+ &validation_level,
+ &validation);
+ if (!NT_STATUS_IS_OK(result)) {
+ goto done;
+ }
+
+process_result:
+
+ if (NT_STATUS_IS_OK(result)) {
+ struct dom_sid user_sid;
+ TALLOC_CTX *base_ctx = NULL;
+ struct netr_SamBaseInfo *base_info = NULL;
+ struct netr_SamInfo3 *info3 = NULL;
+
+ switch (validation_level) {
+ case 3:
+ base_ctx = validation->sam3;
+ base_info = &validation->sam3->base;
+ break;
+ case 6:
+ base_ctx = validation->sam6;
+ base_info = &validation->sam6->base;
+ break;
+ default:
+ result = NT_STATUS_INTERNAL_ERROR;
+ goto done;
+ }
+
+ sid_compose(&user_sid, base_info->domain_sid, base_info->rid);
+
+ if (base_info->full_name.string == NULL) {
+ struct netr_SamInfo3 *cached_info3;
+
+ cached_info3 = netsamlogon_cache_get(mem_ctx,
+ &user_sid);
+ if (cached_info3 != NULL &&
+ cached_info3->base.full_name.string != NULL)
+ {
+ base_info->full_name.string = talloc_strdup(
+ base_ctx,
+ cached_info3->base.full_name.string);
+ } else {
+
+ /* this might fail so we don't check the return code */
+ wcache_query_user_fullname(domain,
+ base_ctx,
+ &user_sid,
+ &base_info->full_name.string);
+ }
+ }
+
+ result = map_validation_to_info3(talloc_tos(),
+ validation_level,
+ validation,
+ &info3);
+ if (!NT_STATUS_IS_OK(result)) {
+ goto done;
+ }
+ wcache_invalidate_samlogon(find_domain_from_name(name_domain),
+ &user_sid);
+ netsamlogon_cache_store(name_user, info3);
+ TALLOC_FREE(info3);
+ }
+
+done:
+
+ /* give us a more useful (more correct?) error code */
+ if ((NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND) ||
+ (NT_STATUS_EQUAL(result, NT_STATUS_UNSUCCESSFUL)))) {
+ result = NT_STATUS_NO_LOGON_SERVERS;
+ }
+
+ DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2,
+ ("NTLM CRAP authentication for user [%s]\\[%s] returned %s\n",
+ name_domain,
+ name_user,
+ nt_errstr(result)));
+
+ if (!NT_STATUS_IS_OK(result)) {
+ return result;
+ }
+
+ *_validation_level = validation_level;
+ *_validation = validation;
+ return NT_STATUS_OK;
+}
+
+NTSTATUS _wbint_PamAuthCrap(struct pipes_struct *p, struct wbint_PamAuthCrap *r)
+{
+ struct winbindd_domain *domain = wb_child_domain();
+ NTSTATUS result;
+ uint64_t logon_id = 0;
+ uint8_t authoritative = 1;
+ uint32_t flags = 0;
+ uint16_t validation_level = UINT16_MAX;
+ union netr_Validation *validation = NULL;
+ const struct timeval start_time = timeval_current();
+ const struct tsocket_address *remote = NULL;
+ const struct tsocket_address *local = NULL;
+ struct netr_SamInfo3 *info3 = NULL;
+ pid_t client_pid;
+
+ if (domain == NULL) {
+ return NT_STATUS_REQUEST_NOT_ACCEPTED;
+ }
+
+ /* Cut client_pid to 32bit */
+ client_pid = r->in.client_pid;
+ if ((uint64_t)client_pid != r->in.client_pid) {
+ DBG_DEBUG("pid out of range\n");
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ logon_id = generate_random_u64();
+ remote = dcesrv_connection_get_remote_address(p->dce_call->conn);
+ local = dcesrv_connection_get_local_address(p->dce_call->conn);
+
+ DBG_NOTICE("[%"PRIu32"]: pam auth crap domain: %s user: %s\n",
+ client_pid, r->in.domain, r->in.user);
+
+ result = winbind_dual_SamLogon(domain,
+ p->mem_ctx,
+ false, /* interactive */
+ r->in.logon_parameters,
+ r->in.user,
+ r->in.domain,
+ r->in.workstation,
+ logon_id,
+ r->in.client_name,
+ client_pid,
+ r->in.chal,
+ r->in.lm_resp,
+ r->in.nt_resp,
+ remote,
+ local,
+ &authoritative,
+ false,
+ &flags,
+ &validation_level,
+ &validation);
+ if (!NT_STATUS_IS_OK(result)) {
+ goto done;
+ }
+
+ result = map_validation_to_info3(p->mem_ctx,
+ validation_level,
+ validation,
+ &info3);
+ if (!NT_STATUS_IS_OK(result)) {
+ goto done;
+ }
+
+ /* Check if the user is in the right group */
+ result = check_info3_in_group(info3, r->in.require_membership_of_sid);
+ if (!NT_STATUS_IS_OK(result)) {
+ char *s = NDR_PRINT_STRUCT_STRING(p->mem_ctx,
+ wbint_SidArray,
+ r->in.require_membership_of_sid);
+ DBG_NOTICE("User %s is not in the required groups:\n",
+ r->in.user);
+ DEBUGADD(DBGLVL_NOTICE, ("%s", s));
+ DEBUGADD(DBGLVL_NOTICE,
+ ("CRAP authentication is rejected\n"));
+ goto done;
+ }
+
+ if (!is_allowed_domain(info3->base.logon_domain.string)) {
+ DBG_NOTICE("Authentication failed for user [%s] "
+ "from firewalled domain [%s]\n",
+ info3->base.account_name.string,
+ info3->base.logon_domain.string);
+ result = NT_STATUS_AUTHENTICATION_FIREWALL_FAILED;
+ goto done;
+ }
+
+ r->out.validation = talloc_zero(p->mem_ctx,
+ struct wbint_PamAuthCrapValidation);
+ if (r->out.validation == NULL) {
+ result = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+
+ r->out.validation->level = validation_level;
+ r->out.validation->validation = talloc_move(r->out.validation,
+ &validation);
+done:
+
+ if (r->in.flags & WBFLAG_PAM_NT_STATUS_SQUASH) {
+ result = nt_status_squash(result);
+ }
+
+ *r->out.authoritative = authoritative;
+
+ /*
+ * Log the winbind pam authentication, the logon_id will tie this to
+ * any of the logons invoked from this request.
+ */
+ log_authentication(
+ p->mem_ctx,
+ domain,
+ r->in.client_name,
+ client_pid,
+ r->out.validation->level,
+ r->out.validation->validation,
+ start_time,
+ logon_id,
+ "NTLM_AUTH",
+ r->in.user,
+ r->in.domain,
+ r->in.workstation,
+ r->in.lm_resp,
+ r->in.nt_resp,
+ remote,
+ local,
+ result);
+
+ return result;
+}
+
+NTSTATUS _wbint_PamAuthChangePassword(struct pipes_struct *p,
+ struct wbint_PamAuthChangePassword *r)
+{
+ struct winbindd_domain *contact_domain = wb_child_domain();
+ struct policy_handle dom_pol;
+ struct rpc_pipe_client *cli = NULL;
+ bool got_info = false;
+ struct samr_DomInfo1 *info = NULL;
+ struct userPwdChangeFailureInformation *reject = NULL;
+ NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+ NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
+ char *namespace = NULL;
+ char *domain = NULL;
+ char *user = NULL;
+ struct dcerpc_binding_handle *b = NULL;
+ bool ok;
+ pid_t client_pid;
+
+ ZERO_STRUCT(dom_pol);
+
+ if (contact_domain == NULL) {
+ return NT_STATUS_REQUEST_NOT_ACCEPTED;
+ }
+
+ /* Cut client_pid to 32bit */
+ client_pid = r->in.client_pid;
+ if ((uint64_t)client_pid != r->in.client_pid) {
+ DBG_DEBUG("pid out of range\n");
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ DBG_NOTICE("[%"PRIu32"]: dual pam chauthtok %s\n",
+ client_pid, r->in.user);
+
+ ok = parse_domain_user(p->mem_ctx,
+ r->in.user,
+ &namespace,
+ &domain,
+ &user);
+ if (!ok) {
+ goto done;
+ }
+
+ if (!is_allowed_domain(domain)) {
+ DBG_NOTICE("Authentication failed for user [%s] "
+ "from firewalled domain [%s]\n",
+ user, domain);
+ result = NT_STATUS_AUTHENTICATION_FIREWALL_FAILED;
+ goto done;
+ }
+
+ /* Initialize reject reason */
+ *r->out.reject_reason = Undefined;
+
+ /* Get sam handle */
+
+ result = cm_connect_sam(contact_domain,
+ p->mem_ctx,
+ true,
+ &cli,
+ &dom_pol);
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(1, ("could not get SAM handle on DC for %s\n", domain));
+ goto done;
+ }
+
+ b = cli->binding_handle;
+
+ status = dcerpc_samr_chgpasswd_user4(cli->binding_handle,
+ p->mem_ctx,
+ cli->srv_name_slash,
+ user,
+ r->in.old_password,
+ r->in.new_password,
+ &result);
+ if (NT_STATUS_IS_OK(status) && NT_STATUS_IS_OK(result)) {
+ /* Password successfully changed. */
+ goto done;
+ }
+ if (!NT_STATUS_IS_OK(status)) {
+ if (NT_STATUS_EQUAL(status, NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE) ||
+ NT_STATUS_EQUAL(status, NT_STATUS_NOT_SUPPORTED) ||
+ NT_STATUS_EQUAL(status, NT_STATUS_NOT_IMPLEMENTED)) {
+ /* DO NOT FALLBACK TO RC4 */
+ if (lp_weak_crypto() == SAMBA_WEAK_CRYPTO_DISALLOWED) {
+ result = NT_STATUS_STRONG_CRYPTO_NOT_SUPPORTED;
+ goto process_result;
+ }
+ }
+ } else {
+ /* Password change was unsuccessful. */
+ if (!NT_STATUS_IS_OK(result)) {
+ goto done;
+ }
+ }
+
+ result = rpccli_samr_chgpasswd_user3(cli,
+ p->mem_ctx,
+ user,
+ r->in.new_password,
+ r->in.old_password,
+ &info,
+ &reject);
+
+ /* Windows 2003 returns NT_STATUS_PASSWORD_RESTRICTION */
+
+ if (NT_STATUS_EQUAL(result, NT_STATUS_PASSWORD_RESTRICTION) ) {
+
+ *r->out.dominfo = talloc_steal(p->mem_ctx, info);
+ *r->out.reject_reason = reject->extendedFailureReason;
+
+ got_info = true;
+ }
+
+ /* atm the pidl generated rpccli_samr_ChangePasswordUser3 function will
+ * return with NT_STATUS_BUFFER_TOO_SMALL for w2k dcs as w2k just
+ * returns with 4byte error code (NT_STATUS_NOT_SUPPORTED) which is too
+ * short to comply with the samr_ChangePasswordUser3 idl - gd */
+
+ /* only fallback when the chgpasswd_user3 call is not supported */
+ if (NT_STATUS_EQUAL(result, NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE) ||
+ NT_STATUS_EQUAL(result, NT_STATUS_NOT_SUPPORTED) ||
+ NT_STATUS_EQUAL(result, NT_STATUS_BUFFER_TOO_SMALL) ||
+ NT_STATUS_EQUAL(result, NT_STATUS_NOT_IMPLEMENTED)) {
+
+ DEBUG(10,("Password change with chgpasswd_user3 failed with: %s, retrying chgpasswd_user2\n",
+ nt_errstr(result)));
+
+ result = rpccli_samr_chgpasswd_user2(cli,
+ p->mem_ctx,
+ user,
+ r->in.new_password,
+ r->in.old_password);
+
+ /* Windows 2000 returns NT_STATUS_ACCOUNT_RESTRICTION.
+ Map to the same status code as Windows 2003. */
+
+ if ( NT_STATUS_EQUAL(NT_STATUS_ACCOUNT_RESTRICTION, result ) ) {
+ result = NT_STATUS_PASSWORD_RESTRICTION;
+ }
+ }
+
+done:
+
+ if (NT_STATUS_IS_OK(result)
+ && (r->in.flags & WBFLAG_PAM_CACHED_LOGIN)
+ && lp_winbind_offline_logon()) {
+ result = winbindd_update_creds_by_name(contact_domain, user,
+ r->in.new_password);
+ /* Again, this happens when we login from gdm or xdm
+ * and the password expires, *BUT* cached credentials
+ * don't exist. winbindd_update_creds_by_name()
+ * returns NT_STATUS_NO_SUCH_USER.
+ * This is not a failure.
+ * --- BoYang
+ * */
+ if (NT_STATUS_EQUAL(result, NT_STATUS_NO_SUCH_USER)) {
+ result = NT_STATUS_OK;
+ }
+
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(10, ("Failed to store creds: %s\n",
+ nt_errstr(result)));
+ goto process_result;
+ }
+ }
+
+ if (!NT_STATUS_IS_OK(result) && !got_info && contact_domain) {
+
+ NTSTATUS policy_ret;
+
+ policy_ret = get_password_policy(contact_domain,
+ p->mem_ctx,
+ &info);
+
+ /* failure of this is non critical, it will just provide no
+ * additional information to the client why the change has
+ * failed - Guenther */
+
+ if (!NT_STATUS_IS_OK(policy_ret)) {
+ DEBUG(10,("Failed to get password policies: %s\n", nt_errstr(policy_ret)));
+ goto process_result;
+ }
+
+ *r->out.dominfo = talloc_steal(p->mem_ctx, info);
+ }
+
+process_result:
+
+ if (strequal(contact_domain->name, get_global_sam_name())) {
+ /* FIXME: internal rpc pipe does not cache handles yet */
+ if (b) {
+ if (is_valid_policy_hnd(&dom_pol)) {
+ NTSTATUS _result;
+ dcerpc_samr_Close(b,
+ p->mem_ctx,
+ &dom_pol,
+ &_result);
+ }
+ TALLOC_FREE(cli);
+ }
+ }
+
+ DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2,
+ ("Password change for user [%s]\\[%s] returned %s (PAM: %d)\n",
+ domain,
+ user,
+ nt_errstr(result),
+ nt_status_to_pam(result)));
+
+ return result;
+}
+
+NTSTATUS _wbint_PamLogOff(struct pipes_struct *p, struct wbint_PamLogOff *r)
+{
+ struct winbindd_domain *domain = wb_child_domain();
+ NTSTATUS result = NT_STATUS_NOT_SUPPORTED;
+ pid_t client_pid;
+ uid_t user_uid;
+
+ if (domain == NULL) {
+ return NT_STATUS_REQUEST_NOT_ACCEPTED;
+ }
+
+ /* Cut client_pid to 32bit */
+ client_pid = r->in.client_pid;
+ if ((uint64_t)client_pid != r->in.client_pid) {
+ DBG_DEBUG("pid out of range\n");
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* Cut uid to 32bit */
+ user_uid = r->in.uid;
+ if ((uint64_t)user_uid != r->in.uid) {
+ DBG_DEBUG("uid out of range\n");
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ DBG_NOTICE("[%"PRIu32"]: pam dual logoff %s\n", client_pid, r->in.user);
+
+ if (!(r->in.flags & WBFLAG_PAM_KRB5)) {
+ result = NT_STATUS_OK;
+ goto process_result;
+ }
+
+ if ((r->in.krb5ccname == NULL) || (strlen(r->in.krb5ccname) == 0)) {
+ result = NT_STATUS_OK;
+ goto process_result;
+ }
+
+#ifdef HAVE_KRB5
+
+ if (user_uid == (uid_t)-1) {
+ DBG_DEBUG("Invalid uid for user '%s'\n", r->in.user);
+ goto process_result;
+ }
+
+ /* what we need here is to find the corresponding krb5 ccache name *we*
+ * created for a given username and destroy it */
+
+ if (!ccache_entry_exists(r->in.user)) {
+ result = NT_STATUS_OK;
+ DBG_DEBUG("No entry found for user '%s'.\n", r->in.user);
+ goto process_result;
+ }
+
+ if (!ccache_entry_identical(r->in.user, user_uid, r->in.krb5ccname)) {
+ DBG_DEBUG("Cached entry differs for user '%s'\n", r->in.user);
+ goto process_result;
+ }
+
+ result = remove_ccache(r->in.user);
+ if (!NT_STATUS_IS_OK(result)) {
+ DBG_DEBUG("Failed to remove ccache for user '%s': %s\n",
+ r->in.user, nt_errstr(result));
+ goto process_result;
+ }
+
+ /*
+ * Remove any mlock'ed memory creds in the child
+ * we might be using for krb5 ticket renewal.
+ */
+
+ winbindd_delete_memory_creds(r->in.user);
+
+#else
+ result = NT_STATUS_NOT_SUPPORTED;
+#endif
+
+process_result:
+
+ return result;
+}
+
+/* Change user password with auth crap*/
+
+NTSTATUS _wbint_PamAuthCrapChangePassword(struct pipes_struct *p,
+ struct wbint_PamAuthCrapChangePassword *r)
+{
+ NTSTATUS result;
+ char *namespace = NULL;
+ char *domain = NULL;
+ char *user = NULL;
+ struct policy_handle dom_pol;
+ struct winbindd_domain *contact_domain = wb_child_domain();
+ struct rpc_pipe_client *cli = NULL;
+ struct dcerpc_binding_handle *b = NULL;
+ TALLOC_CTX *frame = talloc_stackframe();
+ pid_t client_pid;
+
+ ZERO_STRUCT(dom_pol);
+
+ if (contact_domain == NULL) {
+ return NT_STATUS_REQUEST_NOT_ACCEPTED;
+ }
+
+ /* Cut client_pid to 32bit */
+ client_pid = r->in.client_pid;
+ if ((uint64_t)client_pid != r->in.client_pid) {
+ DBG_DEBUG("pid out of range\n");
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ DBG_NOTICE("[%"PRIu32"]: pam change pswd auth crap domain: %s "
+ "user: %s\n", client_pid, r->in.domain, r->in.user);
+
+ if (lp_winbind_offline_logon()) {
+ DEBUG(0,("Refusing password change as winbind offline logons are enabled. "));
+ DEBUGADD(0,("Changing passwords here would risk inconsistent logons\n"));
+ result = NT_STATUS_ACCESS_DENIED;
+ goto done;
+ }
+
+ if (r->in.domain != NULL && strlen(r->in.domain) > 0) {
+ user = talloc_strdup(frame, "");
+ namespace = talloc_strdup(frame, "");
+ domain = talloc_strdup(frame, r->in.domain);
+ if (domain == NULL || user == NULL || namespace == NULL) {
+ result = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+
+ } else {
+ bool ok;
+
+ ok = parse_domain_user(frame,
+ r->in.user,
+ &namespace,
+ &domain,
+ &user);
+ if (!ok) {
+ result = NT_STATUS_INVALID_PARAMETER;
+ goto done;
+ }
+
+ if (strlen(domain) == 0) {
+ DBG_NOTICE("no domain specified with username (%s) - "
+ "failing auth\n", r->in.user);
+ result = NT_STATUS_NO_SUCH_USER;
+ goto done;
+ }
+ }
+
+ if (!*domain && lp_winbind_use_default_domain()) {
+ TALLOC_FREE(domain);
+ domain = talloc_strdup(frame, lp_workgroup());
+ if (domain == NULL) {
+ result = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+ }
+
+ if (!is_allowed_domain(domain)) {
+ DBG_NOTICE("Authentication failed for user [%s] "
+ "from firewalled domain [%s]\n",
+ r->in.user,
+ domain);
+ result = NT_STATUS_AUTHENTICATION_FIREWALL_FAILED;
+ goto done;
+ }
+
+ if(!*user) {
+ TALLOC_FREE(user);
+ user = talloc_strdup(frame, r->in.user);
+ if (user == NULL) {
+ result = NT_STATUS_NO_SUCH_USER;
+ goto done;
+ }
+ }
+
+ /* Get sam handle */
+
+ result = cm_connect_sam(contact_domain,
+ p->mem_ctx,
+ true,
+ &cli,
+ &dom_pol);
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(1, ("could not get SAM handle on DC for %s\n", domain));
+ goto done;
+ }
+
+ b = cli->binding_handle;
+
+ result = rpccli_samr_chng_pswd_auth_crap(cli,
+ p->mem_ctx,
+ user,
+ r->in.new_nt_pswd,
+ r->in.old_nt_hash_enc,
+ r->in.new_lm_pswd,
+ r->in.old_lm_hash_enc);
+
+ done:
+
+ if (strequal(contact_domain->name, get_global_sam_name())) {
+ /* FIXME: internal rpc pipe does not cache handles yet */
+ if (b) {
+ if (is_valid_policy_hnd(&dom_pol)) {
+ NTSTATUS _result;
+ dcerpc_samr_Close(b,
+ p->mem_ctx,
+ &dom_pol,
+ &_result);
+ }
+ TALLOC_FREE(cli);
+ }
+ }
+
+ DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2,
+ ("Password change for user [%s]\\[%s] returned %s (PAM: %d)\n",
+ domain, user,
+ nt_errstr(result),
+ nt_status_to_pam(result)));
+ TALLOC_FREE(frame);
+ return result;
+}
+
+#ifdef HAVE_KRB5
+static NTSTATUS extract_pac_vrfy_sigs(TALLOC_CTX *mem_ctx, DATA_BLOB pac_blob,
+ struct PAC_DATA **p_pac_data)
+{
+ krb5_context krbctx = NULL;
+ krb5_error_code k5ret;
+ krb5_keytab keytab;
+ krb5_kt_cursor cursor;
+ krb5_keytab_entry entry;
+ NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+
+ ZERO_STRUCT(entry);
+ ZERO_STRUCT(cursor);
+
+ k5ret = smb_krb5_init_context_common(&krbctx);
+ if (k5ret) {
+ DBG_ERR("kerberos init context failed (%s)\n",
+ error_message(k5ret));
+ status = krb5_to_nt_status(k5ret);
+ goto out;
+ }
+
+ k5ret = gse_krb5_get_server_keytab(krbctx, &keytab);
+ if (k5ret) {
+ DEBUG(1, ("Failed to get keytab: %s\n",
+ error_message(k5ret)));
+ status = krb5_to_nt_status(k5ret);
+ goto out_free;
+ }
+
+ k5ret = krb5_kt_start_seq_get(krbctx, keytab, &cursor);
+ if (k5ret) {
+ DEBUG(1, ("Failed to start seq: %s\n",
+ error_message(k5ret)));
+ status = krb5_to_nt_status(k5ret);
+ goto out_keytab;
+ }
+
+ k5ret = krb5_kt_next_entry(krbctx, keytab, &entry, &cursor);
+ while (k5ret == 0) {
+ status = kerberos_decode_pac(mem_ctx,
+ pac_blob,
+ krbctx,
+ NULL, /* krbtgt_keyblock */
+ KRB5_KT_KEY(&entry), /* service_keyblock */
+ NULL, /* client_principal */
+ 0, /* tgs_authtime */
+ p_pac_data);
+ if (NT_STATUS_IS_OK(status)) {
+ break;
+ }
+ k5ret = smb_krb5_kt_free_entry(krbctx, &entry);
+ k5ret = krb5_kt_next_entry(krbctx, keytab, &entry, &cursor);
+ }
+
+ k5ret = krb5_kt_end_seq_get(krbctx, keytab, &cursor);
+ if (k5ret) {
+ DEBUG(1, ("Failed to end seq: %s\n",
+ error_message(k5ret)));
+ }
+out_keytab:
+ k5ret = krb5_kt_close(krbctx, keytab);
+ if (k5ret) {
+ DEBUG(1, ("Failed to close keytab: %s\n",
+ error_message(k5ret)));
+ }
+out_free:
+ krb5_free_context(krbctx);
+out:
+ return status;
+}
+
+NTSTATUS winbindd_pam_auth_pac_verify(struct winbindd_cli_state *state,
+ TALLOC_CTX *mem_ctx,
+ bool *p_is_trusted,
+ uint16_t *p_validation_level,
+ union netr_Validation **p_validation)
+{
+ struct winbindd_request *req = state->request;
+ DATA_BLOB pac_blob;
+ struct PAC_DATA *pac_data = NULL;
+ struct PAC_LOGON_INFO *logon_info = NULL;
+ struct PAC_UPN_DNS_INFO *upn_dns_info = NULL;
+ struct netr_SamInfo6 *info6 = NULL;
+ uint16_t validation_level = 0;
+ union netr_Validation *validation = NULL;
+ struct netr_SamInfo3 *info3_copy = NULL;
+ NTSTATUS result;
+ bool is_trusted = false;
+ uint32_t i;
+ TALLOC_CTX *tmp_ctx = NULL;
+
+ tmp_ctx = talloc_new(mem_ctx);
+ if (tmp_ctx == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ *p_is_trusted = false;
+ *p_validation_level = 0;
+ *p_validation = NULL;
+
+ pac_blob = data_blob_const(req->extra_data.data, req->extra_len);
+ result = extract_pac_vrfy_sigs(tmp_ctx, pac_blob, &pac_data);
+ if (NT_STATUS_IS_OK(result)) {
+ is_trusted = true;
+ }
+ if (NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED)) {
+ /* Try without signature verification */
+ result = kerberos_decode_pac(tmp_ctx,
+ pac_blob,
+ NULL, /* krb5_context */
+ NULL, /* krbtgt_keyblock */
+ NULL, /* service_keyblock */
+ NULL, /* client_principal */
+ 0, /* tgs_authtime */
+ &pac_data);
+ }
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(1, ("Error during PAC signature verification: %s\n",
+ nt_errstr(result)));
+ goto out;
+ }
+
+ for (i=0; i < pac_data->num_buffers; i++) {
+ if (pac_data->buffers[i].type == PAC_TYPE_LOGON_INFO) {
+ logon_info = pac_data->buffers[i].info->logon_info.info;
+ continue;
+ }
+ if (pac_data->buffers[i].type == PAC_TYPE_UPN_DNS_INFO) {
+ upn_dns_info = &pac_data->buffers[i].info->upn_dns_info;
+ continue;
+ }
+ }
+
+ result = create_info6_from_pac(tmp_ctx,
+ logon_info,
+ upn_dns_info,
+ &info6);
+ if (!NT_STATUS_IS_OK(result)) {
+ goto out;
+ }
+
+ if (!is_allowed_domain(info6->base.logon_domain.string)) {
+ DBG_NOTICE("Authentication failed for user [%s] "
+ "from firewalled domain [%s]\n",
+ info6->base.account_name.string,
+ info6->base.logon_domain.string);
+ result = NT_STATUS_AUTHENTICATION_FIREWALL_FAILED;
+ goto out;
+ }
+
+ result = map_info6_to_validation(tmp_ctx,
+ info6,
+ &validation_level,
+ &validation);
+ if (!NT_STATUS_IS_OK(result)) {
+ goto out;
+ }
+
+ result = map_validation_to_info3(tmp_ctx,
+ validation_level,
+ validation,
+ &info3_copy);
+ if (!NT_STATUS_IS_OK(result)) {
+ goto out;
+ }
+
+ if (is_trusted) {
+ /*
+ * Signature verification succeeded, we can
+ * trust the PAC and prime the netsamlogon
+ * and name2sid caches. DO NOT DO THIS
+ * in the signature verification failed
+ * code path.
+ */
+ struct winbindd_domain *domain = NULL;
+
+ netsamlogon_cache_store(NULL, info3_copy);
+
+ /*
+ * We're in the parent here, so find the child
+ * pointer from the PAC domain name.
+ */
+ domain = find_lookup_domain_from_name(
+ info3_copy->base.logon_domain.string);
+ if (domain && domain->primary ) {
+ struct dom_sid user_sid;
+ struct dom_sid_buf buf;
+
+ sid_compose(&user_sid,
+ info3_copy->base.domain_sid,
+ info3_copy->base.rid);
+
+ cache_name2sid_trusted(domain,
+ info3_copy->base.logon_domain.string,
+ info3_copy->base.account_name.string,
+ SID_NAME_USER,
+ &user_sid);
+
+ DBG_INFO("PAC for user %s\\%s SID %s primed cache\n",
+ info3_copy->base.logon_domain.string,
+ info3_copy->base.account_name.string,
+ dom_sid_str_buf(&user_sid, &buf));
+ }
+ }
+
+ *p_is_trusted = is_trusted;
+ *p_validation_level = validation_level;
+ *p_validation = talloc_move(mem_ctx, &validation);
+
+ result = NT_STATUS_OK;
+out:
+ TALLOC_FREE(tmp_ctx);
+ return result;
+}
+#else /* HAVE_KRB5 */
+NTSTATUS winbindd_pam_auth_pac_verify(struct winbindd_cli_state *state,
+ TALLOC_CTX *mem_ctx,
+ bool *p_is_trusted,
+ uint16_t *p_validation_level,
+ union netr_Validation **p_validation);
+{
+
+ *p_is_trusted = false;
+ *p_validation_level = 0;
+ *p_validation = NULL;
+ return NT_STATUS_NO_SUCH_USER;
+}
+#endif /* HAVE_KRB5 */