Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 955 insertions, 0 deletions

diff --git a/auth/auth_sam_reply.c b/auth/auth_sam_reply.c
new file mode 100644
index 0000000..8c0ebe5
--- /dev/null
+++ b/auth/auth_sam_reply.c
@@ -0,0 +1,955 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Convert a server info struct into the form for PAC and NETLOGON replies
+
+   Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2011
+   Copyright (C) Stefan Metzmacher <metze@samba.org>  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 "librpc/gen_ndr/auth.h"
+#include "libcli/security/security.h"
+#include "auth/auth_sam_reply.h"
+
+/* Returns true if this SID belongs in SamBaseInfo, otherwise false. */
+static bool is_base_sid(const struct auth_SidAttr *sid,
+			const struct dom_sid *domain_sid)
+{
+	if (sid->attrs & SE_GROUP_RESOURCE) {
+		/*
+		 * Resource groups don't belong in the base
+		 * RIDs, they're handled elsewhere.
+		 */
+		return false;
+	}
+
+	/*
+	 * This SID belongs in the base structure only if it's in the account's
+	 * domain.
+	 */
+	return dom_sid_in_domain(domain_sid, &sid->sid);
+}
+
+/* Stores a SID in a previously allocated array. */
+static NTSTATUS store_extra_sid(struct netr_SidAttr *sids,
+				uint32_t *sidcount,
+				const uint32_t allocated_sids,
+				const struct auth_SidAttr *sid)
+{
+	/* Check we aren't about to overflow our allocation. */
+	if (*sidcount >= allocated_sids) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	sids[*sidcount].sid = dom_sid_dup(sids, &sid->sid);
+	if (sids[*sidcount].sid == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	sids[*sidcount].attributes = sid->attrs;
+	*sidcount += 1;
+
+	return NT_STATUS_OK;
+}
+
+/*
+ * Stores a resource SID in a previously allocated array, either Extra SIDs or
+ * Resource SIDs. Any SID within the domain of the first SID so added is stored
+ * there, while remaining SIDs are stored in Extra SIDs.
+ */
+static NTSTATUS store_resource_sid(struct netr_SidAttr *sids,
+				   uint32_t *sidcount,
+				   const uint32_t allocated_sids,
+				   const struct auth_SidAttr *sid,
+				   struct PAC_DOMAIN_GROUP_MEMBERSHIP *resource_groups,
+				   const uint32_t allocated_resource_groups)
+{
+	NTSTATUS status;
+
+	struct dom_sid *resource_domain = NULL;
+	uint32_t rid;
+
+	if (resource_groups == NULL) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	/* Split the SID into domain and RID.  */
+	status = dom_sid_split_rid(resource_groups, &sid->sid, &resource_domain, &rid);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	if (resource_groups->domain_sid == NULL) {
+		/*
+		 * There is no domain SID set. Set it to the domain of this SID.
+		 */
+		resource_groups->domain_sid = resource_domain;
+	} else {
+		/*
+		 * A domain SID has already been set. Check whether this SID's
+		 * domain matches.
+		 *
+		 * Assuming that resource SIDs have been obtained with
+		 * dsdb_expand_nested_groups(), they should all be within the
+		 * same domain (ours), so unless something has gone horribly
+		 * wrong, we should always find that they match.
+		 */
+		bool match = dom_sid_equal(resource_groups->domain_sid, resource_domain);
+		talloc_free(resource_domain);
+		if (!match) {
+			/*
+			 * It doesn't match, so we can't store this SID here. It
+			 * will have to go in Extra SIDs.
+			 */
+			return store_extra_sid(sids, sidcount, allocated_sids, sid);
+		}
+	}
+
+	/* Store the SID in Resource SIDs. */
+
+	/* Check we aren't about to overflow our allocation. */
+	if (resource_groups->groups.count >= allocated_resource_groups) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	resource_groups->groups.rids[resource_groups->groups.count].rid = rid;
+	resource_groups->groups.rids[resource_groups->groups.count].attributes = sid->attrs;
+	resource_groups->groups.count++;
+
+	return NT_STATUS_OK;
+}
+
+/*
+ * Stores a SID in a previously allocated array, or excludes it if we are not
+ * storing resource groups. It will be placed in either Extra SIDs or Resource
+ * SIDs, depending on which is appropriate.
+ */
+static NTSTATUS store_sid(struct netr_SidAttr *sids,
+			  uint32_t *sidcount,
+			  const uint32_t allocated_sids,
+			  const struct auth_SidAttr *sid,
+			  struct PAC_DOMAIN_GROUP_MEMBERSHIP *resource_groups,
+			  const uint32_t allocated_resource_groups,
+			  const enum auth_group_inclusion group_inclusion)
+{
+	/* See if it's a resource SID. */
+	if (sid->attrs & SE_GROUP_RESOURCE) {
+		/*
+		 * If this is the SID of a resource group, determine whether it
+		 * should be included or filtered out.
+		 */
+		switch (group_inclusion) {
+		case AUTH_INCLUDE_RESOURCE_GROUPS:
+			/* Include this SID in Extra SIDs. */
+			break;
+		case AUTH_INCLUDE_RESOURCE_GROUPS_COMPRESSED:
+			/*
+			 * Try to include this SID in Resource Groups. If this
+			 * can't be arranged, we shall fall back to Extra
+			 * SIDs.
+			 */
+			return store_resource_sid(sids,
+						  sidcount,
+						  allocated_sids,
+						  sid,
+						  resource_groups,
+						  allocated_resource_groups);
+		case AUTH_EXCLUDE_RESOURCE_GROUPS:
+			/* Ignore this SID. */
+			return NT_STATUS_OK;
+		default:
+			/* This means we have a bug. */
+			DBG_ERR("invalid group inclusion parameter: %u\n", group_inclusion);
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+	}
+
+	/* Just store the SID in Extra SIDs. */
+	return store_extra_sid(sids,
+			       sidcount,
+			       allocated_sids,
+			       sid);
+}
+
+static NTSTATUS auth_convert_user_info_dc_sambaseinfo(TALLOC_CTX *mem_ctx,
+				const struct auth_user_info_dc *user_info_dc,
+				struct netr_SamBaseInfo *sam)
+{
+	NTSTATUS status;
+	const struct auth_user_info *info;
+
+	ZERO_STRUCTP(sam);
+
+	if (user_info_dc->num_sids > PRIMARY_USER_SID_INDEX) {
+		status = dom_sid_split_rid(sam, &user_info_dc->sids[PRIMARY_USER_SID_INDEX].sid,
+					   &sam->domain_sid, &sam->rid);
+		if (!NT_STATUS_IS_OK(status)) {
+			return status;
+		}
+	} else {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (user_info_dc->num_sids > PRIMARY_GROUP_SID_INDEX) {
+		status = dom_sid_split_rid(NULL, &user_info_dc->sids[PRIMARY_GROUP_SID_INDEX].sid,
+					   NULL, &sam->primary_gid);
+		if (!NT_STATUS_IS_OK(status)) {
+			return status;
+		}
+	} else {
+		/* if we have to encode something like SYSTEM (with no
+		 * second SID in the token) then this is the only
+		 * choice */
+		sam->primary_gid = sam->rid;
+	}
+
+	info = user_info_dc->info;
+
+	sam->logon_time = info->last_logon;
+	sam->logoff_time =  info->last_logoff;
+	sam->kickoff_time = info->acct_expiry;
+	sam->last_password_change = info->last_password_change;
+	sam->allow_password_change = info->allow_password_change;
+	sam->force_password_change = info->force_password_change;
+
+#define _COPY_STRING_TALLOC(src_name, dst_name) do { \
+	if (info->src_name != NULL) {\
+		sam->dst_name.string = talloc_strdup(mem_ctx, info->src_name); \
+		if (sam->dst_name.string == NULL) { \
+			return NT_STATUS_NO_MEMORY; \
+		} \
+	} \
+} while(0)
+	_COPY_STRING_TALLOC(account_name, account_name);
+	_COPY_STRING_TALLOC(full_name, full_name);
+	_COPY_STRING_TALLOC(logon_script, logon_script);
+	_COPY_STRING_TALLOC(profile_path, profile_path);
+	_COPY_STRING_TALLOC(home_directory, home_directory);
+	_COPY_STRING_TALLOC(home_drive, home_drive);
+	_COPY_STRING_TALLOC(logon_server, logon_server);
+	_COPY_STRING_TALLOC(domain_name, logon_domain);
+#undef _COPY_STRING_TALLOC
+
+	sam->logon_count = info->logon_count;
+	sam->bad_password_count = info->bad_password_count;
+	sam->groups.count = 0;
+	sam->groups.rids = NULL;
+
+	if (user_info_dc->num_sids > REMAINING_SIDS_INDEX) {
+		size_t i;
+		sam->groups.rids = talloc_array(mem_ctx, struct samr_RidWithAttribute,
+						user_info_dc->num_sids);
+
+		if (sam->groups.rids == NULL)
+			return NT_STATUS_NO_MEMORY;
+
+		for (i=REMAINING_SIDS_INDEX; i<user_info_dc->num_sids; i++) {
+			struct auth_SidAttr *group_sid = &user_info_dc->sids[i];
+
+			bool belongs_in_base = is_base_sid(group_sid, sam->domain_sid);
+			if (!belongs_in_base) {
+				/* We handle this elsewhere */
+				continue;
+			}
+			sam->groups.rids[sam->groups.count].rid =
+				group_sid->sid.sub_auths[group_sid->sid.num_auths-1];
+
+			sam->groups.rids[sam->groups.count].attributes = group_sid->attrs;
+			sam->groups.count += 1;
+		}
+
+		if (sam->groups.count == 0) {
+			TALLOC_FREE(sam->groups.rids);
+		}
+	}
+
+	sam->user_flags = info->user_flags; /* w2k3 uses NETLOGON_EXTRA_SIDS | NETLOGON_NTLMV2_ENABLED */
+	sam->acct_flags = user_info_dc->info->acct_flags;
+	sam->sub_auth_status = 0;
+	sam->last_successful_logon = 0;
+	sam->last_failed_logon = 0;
+	sam->failed_logon_count = 0;
+	sam->reserved = 0;
+
+	ZERO_STRUCT(sam->key);
+	if (user_info_dc->user_session_key.length == sizeof(sam->key.key)) {
+		memcpy(sam->key.key, user_info_dc->user_session_key.data, sizeof(sam->key.key));
+	}
+
+	ZERO_STRUCT(sam->LMSessKey);
+	if (user_info_dc->lm_session_key.length == sizeof(sam->LMSessKey.key)) {
+		memcpy(sam->LMSessKey.key, user_info_dc->lm_session_key.data,
+		       sizeof(sam->LMSessKey.key));
+	}
+
+	return NT_STATUS_OK;
+}
+
+/* Note that the validity of the _sam6 and resource_groups structures is only as
+ * long as the user_info_dc it was generated from */
+NTSTATUS auth_convert_user_info_dc_saminfo6(TALLOC_CTX *mem_ctx,
+					    const struct auth_user_info_dc *user_info_dc,
+					    enum auth_group_inclusion group_inclusion,
+					    struct netr_SamInfo6 **_sam6,
+					    struct PAC_DOMAIN_GROUP_MEMBERSHIP **_resource_groups)
+{
+	NTSTATUS status;
+	struct netr_SamInfo6 *sam6 = NULL;
+	struct PAC_DOMAIN_GROUP_MEMBERSHIP *resource_groups = NULL;
+	size_t i;
+
+	const uint32_t allocated_sids = user_info_dc->num_sids;
+	uint32_t allocated_resource_groups = 0;
+
+	sam6 = talloc_zero(mem_ctx, struct netr_SamInfo6);
+	if (sam6 == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	if (_resource_groups == NULL) {
+		if (group_inclusion == AUTH_INCLUDE_RESOURCE_GROUPS_COMPRESSED) {
+			DBG_ERR("_resource_groups parameter not provided to receive resource groups!\n");
+			TALLOC_FREE(sam6);
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+	} else if (group_inclusion == AUTH_INCLUDE_RESOURCE_GROUPS_COMPRESSED) {
+		*_resource_groups = NULL;
+
+		/* Allocate resource groups structure. */
+		resource_groups = talloc_zero(mem_ctx, struct PAC_DOMAIN_GROUP_MEMBERSHIP);
+		if (resource_groups == NULL) {
+			TALLOC_FREE(sam6);
+			return NT_STATUS_NO_MEMORY;
+		}
+
+		/*
+		 * Allocate enough space to store user_info_dc->num_sids
+		 * RIDs in the worst case.
+		 */
+		allocated_resource_groups = user_info_dc->num_sids;
+		resource_groups->groups.rids = talloc_zero_array(resource_groups,
+								 struct samr_RidWithAttribute,
+								 allocated_resource_groups);
+		if (resource_groups->groups.rids == NULL) {
+			TALLOC_FREE(sam6);
+			TALLOC_FREE(resource_groups);
+			return NT_STATUS_NO_MEMORY;
+		}
+	} else {
+		/* No resource groups will be provided. */
+		*_resource_groups = NULL;
+	}
+
+	status = auth_convert_user_info_dc_sambaseinfo(sam6,
+						       user_info_dc,
+						       &sam6->base);
+	if (!NT_STATUS_IS_OK(status)) {
+		TALLOC_FREE(sam6);
+		TALLOC_FREE(resource_groups);
+		return status;
+	}
+
+	/*
+	 * Allocate enough space to store user_info_dc->num_sids SIDs in the
+	 * worst case.
+	 */
+	sam6->sids = talloc_zero_array(sam6, struct netr_SidAttr,
+				       allocated_sids);
+	if (sam6->sids == NULL) {
+		TALLOC_FREE(sam6);
+		TALLOC_FREE(resource_groups);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	/* We don't put the user and group SIDs in there */
+	for (i=REMAINING_SIDS_INDEX; i<user_info_dc->num_sids; i++) {
+		struct auth_SidAttr *group_sid = &user_info_dc->sids[i];
+		bool belongs_in_base = is_base_sid(group_sid, sam6->base.domain_sid);
+		if (belongs_in_base) {
+			/* We already handled this in the base. */
+			continue;
+		}
+
+		status = store_sid(sam6->sids,
+				   &sam6->sidcount,
+				   allocated_sids,
+				   group_sid,
+				   resource_groups,
+				   allocated_resource_groups,
+				   group_inclusion);
+		if (!NT_STATUS_IS_OK(status)) {
+			TALLOC_FREE(sam6);
+			TALLOC_FREE(resource_groups);
+			return status;
+		}
+	}
+	if (sam6->sidcount) {
+		sam6->base.user_flags |= NETLOGON_EXTRA_SIDS;
+	} else {
+		sam6->base.user_flags &= ~NETLOGON_EXTRA_SIDS;
+		TALLOC_FREE(sam6->sids);
+	}
+
+	if (user_info_dc->info->dns_domain_name != NULL) {
+		sam6->dns_domainname.string = talloc_strdup(sam6,
+					user_info_dc->info->dns_domain_name);
+		if (sam6->dns_domainname.string == NULL) {
+			TALLOC_FREE(sam6);
+			TALLOC_FREE(resource_groups);
+			return NT_STATUS_NO_MEMORY;
+		}
+	}
+
+	if (user_info_dc->info->user_principal_name != NULL) {
+		sam6->principal_name.string = talloc_strdup(sam6,
+					user_info_dc->info->user_principal_name);
+		if (sam6->principal_name.string == NULL) {
+			TALLOC_FREE(sam6);
+			TALLOC_FREE(resource_groups);
+			return NT_STATUS_NO_MEMORY;
+		}
+	}
+
+	*_sam6 = sam6;
+	if (resource_groups != NULL) {
+		if (resource_groups->groups.count > 0) {
+			*_resource_groups = resource_groups;
+		} else {
+			TALLOC_FREE(resource_groups);
+		}
+	}
+	return NT_STATUS_OK;
+}
+
+/* Note that the validity of the _sam2 structure is only as long as
+ * the user_info_dc it was generated from */
+NTSTATUS auth_convert_user_info_dc_saminfo2(TALLOC_CTX *mem_ctx,
+					   const struct auth_user_info_dc *user_info_dc,
+					   enum auth_group_inclusion group_inclusion,
+					   struct netr_SamInfo2 **_sam2)
+{
+	NTSTATUS status;
+	struct netr_SamInfo6 *sam6 = NULL;
+	struct netr_SamInfo2 *sam2 = NULL;
+
+	sam2 = talloc_zero(mem_ctx, struct netr_SamInfo2);
+	if (sam2 == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	status = auth_convert_user_info_dc_saminfo6(sam2, user_info_dc,
+						    group_inclusion, &sam6,
+						    NULL);
+	if (!NT_STATUS_IS_OK(status)) {
+		TALLOC_FREE(sam2);
+		return status;
+	}
+	sam2->base	= sam6->base;
+	/*
+	 * We have nowhere to put sam6->sids, so we follow Windows here and drop
+	 * it. Any resource groups it happened to contain are lost.
+	 */
+	sam2->base.user_flags &= ~NETLOGON_EXTRA_SIDS;
+	TALLOC_FREE(sam6->sids);
+
+	*_sam2 = sam2;
+	return NT_STATUS_OK;
+}
+
+/* Note that the validity of the _sam3 structure is only as long as
+ * the user_info_dc it was generated from */
+NTSTATUS auth_convert_user_info_dc_saminfo3(TALLOC_CTX *mem_ctx,
+					   const struct auth_user_info_dc *user_info_dc,
+					   enum auth_group_inclusion group_inclusion,
+					   struct netr_SamInfo3 **_sam3,
+					   struct PAC_DOMAIN_GROUP_MEMBERSHIP **_resource_groups)
+{
+	NTSTATUS status;
+	struct netr_SamInfo6 *sam6 = NULL;
+	struct netr_SamInfo3 *sam3 = NULL;
+
+	sam3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
+	if (sam3 == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	status = auth_convert_user_info_dc_saminfo6(sam3, user_info_dc,
+						    group_inclusion, &sam6,
+						    _resource_groups);
+	if (!NT_STATUS_IS_OK(status)) {
+		TALLOC_FREE(sam3);
+		return status;
+	}
+	sam3->base	= sam6->base;
+	sam3->sidcount	= sam6->sidcount;
+	sam3->sids	= sam6->sids;
+
+	*_sam3 = sam3;
+	return NT_STATUS_OK;
+}
+
+/**
+ * Make a user_info struct from the info3 or similar returned by a domain logon.
+ *
+ * The netr_SamInfo3 is also a key structure in the source3 auth subsystem
+ */
+
+NTSTATUS make_user_info_SamBaseInfo(TALLOC_CTX *mem_ctx,
+				    const char *account_name,
+				    const struct netr_SamBaseInfo *base,
+				    bool authenticated,
+				    struct auth_user_info **_user_info)
+{
+	struct auth_user_info *info;
+
+	info = talloc_zero(mem_ctx, struct auth_user_info);
+	if (info == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	if (base->account_name.string) {
+		info->account_name = talloc_strdup(info, base->account_name.string);
+	} else {
+		info->account_name = talloc_strdup(info, account_name);
+	}
+	if (info->account_name == NULL) {
+		talloc_free(info);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	if (base->logon_domain.string) {
+		info->domain_name = talloc_strdup(info, base->logon_domain.string);
+		if (info->domain_name == NULL) {
+			talloc_free(info);
+			return NT_STATUS_NO_MEMORY;
+		}
+	}
+
+	if (base->full_name.string) {
+		info->full_name = talloc_strdup(info, base->full_name.string);
+		if (info->full_name == NULL) {
+			talloc_free(info);
+			return NT_STATUS_NO_MEMORY;
+		}
+	}
+	if (base->logon_script.string) {
+		info->logon_script = talloc_strdup(info, base->logon_script.string);
+		if (info->logon_script == NULL) {
+			talloc_free(info);
+			return NT_STATUS_NO_MEMORY;
+		}
+	}
+	if (base->profile_path.string) {
+		info->profile_path = talloc_strdup(info, base->profile_path.string);
+		if (info->profile_path == NULL) {
+			talloc_free(info);
+			return NT_STATUS_NO_MEMORY;
+		}
+	}
+	if (base->home_directory.string) {
+		info->home_directory = talloc_strdup(info, base->home_directory.string);
+		if (info->home_directory == NULL) {
+			talloc_free(info);
+			return NT_STATUS_NO_MEMORY;
+		}
+	}
+	if (base->home_drive.string) {
+		info->home_drive = talloc_strdup(info, base->home_drive.string);
+		if (info->home_drive == NULL) {
+			talloc_free(info);
+			return NT_STATUS_NO_MEMORY;
+		}
+	}
+	if (base->logon_server.string) {
+		info->logon_server = talloc_strdup(info, base->logon_server.string);
+		if (info->logon_server == NULL) {
+			talloc_free(info);
+			return NT_STATUS_NO_MEMORY;
+		}
+	}
+	info->last_logon = base->logon_time;
+	info->last_logoff = base->logoff_time;
+	info->acct_expiry = base->kickoff_time;
+	info->last_password_change = base->last_password_change;
+	info->allow_password_change = base->allow_password_change;
+	info->force_password_change = base->force_password_change;
+	info->logon_count = base->logon_count;
+	info->bad_password_count = base->bad_password_count;
+	info->acct_flags = base->acct_flags;
+
+	info->user_flags = base->user_flags;
+	if (!authenticated) {
+		/*
+		 * We only consider the user authenticated if NETLOGON_GUEST is
+		 * not set, and authenticated is set
+		 */
+		info->user_flags |= NETLOGON_GUEST;
+	}
+
+	*_user_info = info;
+	return NT_STATUS_OK;
+}
+
+struct auth_user_info *auth_user_info_copy(TALLOC_CTX *mem_ctx,
+					   const struct auth_user_info *src)
+{
+	struct auth_user_info *dst = NULL;
+
+	dst = talloc_zero(mem_ctx, struct auth_user_info);
+	if (dst == NULL) {
+		return NULL;
+	}
+
+	*dst = *src;
+#define _COPY_STRING(_mem, _str) do { \
+	if ((_str) != NULL) { \
+		(_str) = talloc_strdup((_mem), (_str)); \
+		if ((_str) == NULL) { \
+			TALLOC_FREE(dst); \
+			return NULL; \
+		} \
+	} \
+} while(0)
+	_COPY_STRING(dst, dst->account_name);
+	_COPY_STRING(dst, dst->user_principal_name);
+	_COPY_STRING(dst, dst->domain_name);
+	_COPY_STRING(dst, dst->dns_domain_name);
+	_COPY_STRING(dst, dst->full_name);
+	_COPY_STRING(dst, dst->logon_script);
+	_COPY_STRING(dst, dst->profile_path);
+	_COPY_STRING(dst, dst->home_directory);
+	_COPY_STRING(dst, dst->home_drive);
+	_COPY_STRING(dst, dst->logon_server);
+#undef _COPY_STRING
+
+	return dst;
+}
+
+/**
+ * Make a user_info_dc struct from the info3 returned by a domain logon
+ */
+NTSTATUS make_user_info_dc_netlogon_validation(TALLOC_CTX *mem_ctx,
+					      const char *account_name,
+					      uint16_t validation_level,
+					      const union netr_Validation *validation,
+					       bool authenticated,
+					      struct auth_user_info_dc **_user_info_dc)
+{
+	NTSTATUS status;
+	struct auth_user_info_dc *user_info_dc = NULL;
+	const struct netr_SamBaseInfo *base = NULL;
+	uint32_t sidcount = 0;
+	const struct netr_SidAttr *sids = NULL;
+	const char *dns_domainname = NULL;
+	const char *principal = NULL;
+	uint32_t i;
+
+	switch (validation_level) {
+	case 2:
+		if (!validation || !validation->sam2) {
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+		base = &validation->sam2->base;
+		break;
+	case 3:
+		if (!validation || !validation->sam3) {
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+		base = &validation->sam3->base;
+		sidcount = validation->sam3->sidcount;
+		sids = validation->sam3->sids;
+		break;
+	case 6:
+		if (!validation || !validation->sam6) {
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+		base = &validation->sam6->base;
+		sidcount = validation->sam6->sidcount;
+		sids = validation->sam6->sids;
+		dns_domainname = validation->sam6->dns_domainname.string;
+		principal = validation->sam6->principal_name.string;
+		break;
+	default:
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	user_info_dc = talloc_zero(mem_ctx, struct auth_user_info_dc);
+	if (user_info_dc == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	/*
+	   Here is where we should check the list of
+	   trusted domains, and verify that the SID
+	   matches.
+	*/
+	if (!base->domain_sid) {
+		DEBUG(0, ("Cannot operate on a Netlogon Validation without a domain SID\n"));
+		talloc_free(user_info_dc);
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	/* The IDL layer would be a better place to check this, but to
+	 * guard the integer addition below, we double-check */
+	if (base->groups.count > 65535) {
+		talloc_free(user_info_dc);
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	user_info_dc->num_sids = PRIMARY_SIDS_COUNT;
+
+	user_info_dc->sids = talloc_array(user_info_dc, struct auth_SidAttr,  user_info_dc->num_sids + base->groups.count);
+	if (user_info_dc->sids == NULL) {
+		talloc_free(user_info_dc);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	user_info_dc->sids[PRIMARY_USER_SID_INDEX].sid = *base->domain_sid;
+	if (!sid_append_rid(&user_info_dc->sids[PRIMARY_USER_SID_INDEX].sid, base->rid)) {
+		talloc_free(user_info_dc);
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+	user_info_dc->sids[PRIMARY_USER_SID_INDEX].attrs = SE_GROUP_DEFAULT_FLAGS;
+
+	user_info_dc->sids[PRIMARY_GROUP_SID_INDEX].sid = *base->domain_sid;
+	if (!sid_append_rid(&user_info_dc->sids[PRIMARY_GROUP_SID_INDEX].sid, base->primary_gid)) {
+		talloc_free(user_info_dc);
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+	/*
+	 * This attribute value might be wrong if the primary group is a
+	 * resource group. But a resource group is not meant to be in a primary
+	 * group in the first place, and besides, these attributes will never
+	 * make their way into a PAC.
+	 */
+	user_info_dc->sids[PRIMARY_GROUP_SID_INDEX].attrs = SE_GROUP_DEFAULT_FLAGS;
+
+	for (i = 0; i < base->groups.count; i++) {
+		user_info_dc->sids[user_info_dc->num_sids].sid = *base->domain_sid;
+		if (!sid_append_rid(&user_info_dc->sids[user_info_dc->num_sids].sid, base->groups.rids[i].rid)) {
+			talloc_free(user_info_dc);
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+		user_info_dc->sids[user_info_dc->num_sids].attrs = base->groups.rids[i].attributes;
+		user_info_dc->num_sids++;
+	}
+
+	/* Copy 'other' sids.  We need to do sid filtering here to
+	   prevent possible elevation of privileges.  See:
+
+           http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
+         */
+
+	/*
+	 * The IDL layer would be a better place to check this, but to
+	 * guard the integer addition below, we double-check
+	 */
+	if (sidcount > UINT16_MAX) {
+		talloc_free(user_info_dc);
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (sidcount > 0) {
+		struct auth_SidAttr *dgrps = user_info_dc->sids;
+		size_t dgrps_count;
+
+		dgrps_count = user_info_dc->num_sids + sidcount;
+		dgrps = talloc_realloc(user_info_dc, dgrps, struct auth_SidAttr,
+				       dgrps_count);
+		if (dgrps == NULL) {
+			talloc_free(user_info_dc);
+			return NT_STATUS_NO_MEMORY;
+		}
+
+		for (i = 0; i < sidcount; i++) {
+			if (sids[i].sid) {
+				dgrps[user_info_dc->num_sids].sid = *sids[i].sid;
+				dgrps[user_info_dc->num_sids].attrs = sids[i].attributes;
+				user_info_dc->num_sids++;
+			}
+		}
+
+		user_info_dc->sids = dgrps;
+
+		/* Where are the 'global' sids?... */
+	}
+
+	status = make_user_info_SamBaseInfo(user_info_dc, account_name, base, authenticated, &user_info_dc->info);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(user_info_dc);
+		return status;
+	}
+
+	if (dns_domainname != NULL) {
+		user_info_dc->info->dns_domain_name = talloc_strdup(user_info_dc->info,
+								    dns_domainname);
+		if (user_info_dc->info->dns_domain_name == NULL) {
+			talloc_free(user_info_dc);
+			return NT_STATUS_NO_MEMORY;
+		}
+	}
+
+	if (principal != NULL) {
+		user_info_dc->info->user_principal_name = talloc_strdup(user_info_dc->info,
+									principal);
+		if (user_info_dc->info->user_principal_name == NULL) {
+			talloc_free(user_info_dc);
+			return NT_STATUS_NO_MEMORY;
+		}
+	}
+
+	/* ensure we are never given NULL session keys */
+
+	if (all_zero(base->key.key, sizeof(base->key.key))) {
+		user_info_dc->user_session_key = data_blob(NULL, 0);
+	} else {
+		user_info_dc->user_session_key = data_blob_talloc(user_info_dc, base->key.key, sizeof(base->key.key));
+		if (user_info_dc->user_session_key.data == NULL) {
+			talloc_free(user_info_dc);
+			return NT_STATUS_NO_MEMORY;
+		}
+	}
+
+	if (all_zero(base->LMSessKey.key, sizeof(base->LMSessKey.key))) {
+		user_info_dc->lm_session_key = data_blob(NULL, 0);
+	} else {
+		user_info_dc->lm_session_key = data_blob_talloc(user_info_dc, base->LMSessKey.key, sizeof(base->LMSessKey.key));
+		if (user_info_dc->lm_session_key.data == NULL) {
+			talloc_free(user_info_dc);
+			return NT_STATUS_NO_MEMORY;
+		}
+	}
+
+	*_user_info_dc = user_info_dc;
+	return NT_STATUS_OK;
+}
+
+/**
+ * Make a user_info_dc struct from the PAC_LOGON_INFO supplied in the krb5
+ * logon. For group_inclusion, pass AUTH_INCLUDE_RESOURCE_GROUPS if SIDs from
+ * the resource groups are to be included in the resulting structure, and pass
+ * AUTH_EXCLUDE_RESOURCE_GROUPS otherwise.
+ */
+NTSTATUS make_user_info_dc_pac(TALLOC_CTX *mem_ctx,
+			      const struct PAC_LOGON_INFO *pac_logon_info,
+			      const struct PAC_UPN_DNS_INFO *pac_upn_dns_info,
+			      const enum auth_group_inclusion group_inclusion,
+			      struct auth_user_info_dc **_user_info_dc)
+{
+	uint32_t i;
+	NTSTATUS nt_status;
+	union netr_Validation validation;
+	struct auth_user_info_dc *user_info_dc;
+	const struct PAC_DOMAIN_GROUP_MEMBERSHIP *rg = NULL;
+	size_t sidcount;
+
+	validation.sam3 = discard_const_p(struct netr_SamInfo3, &pac_logon_info->info3);
+
+	nt_status = make_user_info_dc_netlogon_validation(mem_ctx, "", 3, &validation,
+							  true, /* This user was authenticated */
+							  &user_info_dc);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		return nt_status;
+	}
+
+	if (pac_logon_info->info3.base.user_flags & NETLOGON_RESOURCE_GROUPS) {
+		switch (group_inclusion) {
+		case AUTH_INCLUDE_RESOURCE_GROUPS:
+			/* Take resource groups from the PAC. */
+			rg = &pac_logon_info->resource_groups;
+			break;
+		case AUTH_EXCLUDE_RESOURCE_GROUPS:
+			/*
+			 * The PAC is from a TGT, or we don't want to process
+			 * its resource groups.
+			 */
+			break;
+		default:
+			DBG_ERR("invalid group inclusion parameter: %u\n", group_inclusion);
+			talloc_free(user_info_dc);
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+	}
+
+	if (rg != NULL && rg->groups.count > 0) {
+		/* The IDL layer would be a better place to check this, but to
+		 * guard the integer addition below, we double-check */
+		if (rg->groups.count > 65535) {
+			talloc_free(user_info_dc);
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+
+		/*
+		  Here is where we should check the list of
+		  trusted domains, and verify that the SID
+		  matches.
+		*/
+		if (rg->domain_sid == NULL) {
+			talloc_free(user_info_dc);
+			DEBUG(0, ("Cannot operate on a PAC without a resource domain SID\n"));
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+
+		sidcount = user_info_dc->num_sids + rg->groups.count;
+		user_info_dc->sids
+			= talloc_realloc(user_info_dc, user_info_dc->sids, struct auth_SidAttr, sidcount);
+		if (user_info_dc->sids == NULL) {
+			TALLOC_FREE(user_info_dc);
+			return NT_STATUS_NO_MEMORY;
+		}
+
+		for (i = 0; i < rg->groups.count; i++) {
+			bool ok;
+
+			user_info_dc->sids[user_info_dc->num_sids].sid = *rg->domain_sid;
+			ok = sid_append_rid(&user_info_dc->sids[user_info_dc->num_sids].sid,
+					    rg->groups.rids[i].rid);
+			if (!ok) {
+				talloc_free(user_info_dc);
+				return NT_STATUS_INVALID_PARAMETER;
+			}
+			user_info_dc->sids[user_info_dc->num_sids].attrs = rg->groups.rids[i].attributes;
+			user_info_dc->num_sids++;
+		}
+	}
+
+	if (pac_upn_dns_info != NULL) {
+		if (pac_upn_dns_info->upn_name != NULL) {
+			user_info_dc->info->user_principal_name =
+				talloc_strdup(user_info_dc->info,
+					      pac_upn_dns_info->upn_name);
+			if (user_info_dc->info->user_principal_name == NULL) {
+				talloc_free(user_info_dc);
+				return NT_STATUS_NO_MEMORY;
+			}
+		}
+
+		user_info_dc->info->dns_domain_name =
+			talloc_strdup(user_info_dc->info,
+				      pac_upn_dns_info->dns_domain_name);
+		if (user_info_dc->info->dns_domain_name == NULL) {
+			talloc_free(user_info_dc);
+			return NT_STATUS_NO_MEMORY;
+		}
+
+		if (pac_upn_dns_info->flags & PAC_UPN_DNS_FLAG_CONSTRUCTED) {
+			user_info_dc->info->user_principal_constructed = true;
+		}
+	}
+
+	*_user_info_dc = user_info_dc;
+	return NT_STATUS_OK;
+}