r26127: Move session code out of auth_util.c. No longer making it part of auth but making it usable independently will be the next step.

(This used to be commit b3fcb8e8103304fede865b02ca5169d5793a571d)

1 files changed, 328 insertions, 0 deletions

diff --git a/source4/auth/session.c b/source4/auth/session.c
new file mode 100644
index 0000000000..1a87e98bed
--- /dev/null
+++ b/source4/auth/session.c
@@ -0,0 +1,328 @@
+/* 
+   Unix SMB/CIFS implementation.
+   Authentication utility functions
+   Copyright (C) Andrew Tridgell 1992-1998
+   Copyright (C) Andrew Bartlett 2001
+   Copyright (C) Jeremy Allison 2000-2001
+   Copyright (C) Rafal Szczesniak 2002
+   Copyright (C) Stefan Metzmacher 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 "auth/auth.h"
+#include "libcli/security/security.h"
+#include "libcli/auth/libcli_auth.h"
+#include "dsdb/samdb/samdb.h"
+#include "auth/credentials/credentials.h"
+#include "param/param.h"
+
+struct auth_session_info *anonymous_session(TALLOC_CTX *mem_ctx) 
+{
+	NTSTATUS nt_status;
+	struct auth_session_info *session_info = NULL;
+	nt_status = auth_anonymous_session_info(mem_ctx, &session_info);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		return NULL;
+	}
+	return session_info;
+}
+
+NTSTATUS auth_anonymous_session_info(TALLOC_CTX *parent_ctx, 
+				     struct auth_session_info **_session_info) 
+{
+	NTSTATUS nt_status;
+	struct auth_serversupplied_info *server_info = NULL;
+	struct auth_session_info *session_info = NULL;
+	TALLOC_CTX *mem_ctx = talloc_new(parent_ctx);
+	
+	nt_status = auth_anonymous_server_info(mem_ctx,
+					       &server_info);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		talloc_free(mem_ctx);
+		return nt_status;
+	}
+
+	/* references the server_info into the session_info */
+	nt_status = auth_generate_session_info(parent_ctx, server_info, &session_info);
+	talloc_free(mem_ctx);
+
+	NT_STATUS_NOT_OK_RETURN(nt_status);
+
+	session_info->credentials = cli_credentials_init(session_info);
+	if (!session_info->credentials) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	cli_credentials_set_conf(session_info->credentials, global_loadparm);
+	cli_credentials_set_anonymous(session_info->credentials);
+	
+	*_session_info = session_info;
+
+	return NT_STATUS_OK;
+}
+
+NTSTATUS auth_anonymous_server_info(TALLOC_CTX *mem_ctx, struct auth_serversupplied_info **_server_info) 
+{
+	struct auth_serversupplied_info *server_info;
+	server_info = talloc(mem_ctx, struct auth_serversupplied_info);
+	NT_STATUS_HAVE_NO_MEMORY(server_info);
+
+	server_info->account_sid = dom_sid_parse_talloc(server_info, SID_NT_ANONYMOUS);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->account_sid);
+
+	/* is this correct? */
+	server_info->primary_group_sid = dom_sid_parse_talloc(server_info, SID_BUILTIN_GUESTS);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->primary_group_sid);
+
+	server_info->n_domain_groups = 0;
+	server_info->domain_groups = NULL;
+
+	/* annoying, but the Anonymous really does have a session key, 
+	   and it is all zeros! */
+	server_info->user_session_key = data_blob_talloc(server_info, NULL, 16);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->user_session_key.data);
+
+	server_info->lm_session_key = data_blob_talloc(server_info, NULL, 16);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->lm_session_key.data);
+
+	data_blob_clear(&server_info->user_session_key);
+	data_blob_clear(&server_info->lm_session_key);
+
+	server_info->account_name = talloc_strdup(server_info, "ANONYMOUS LOGON");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->account_name);
+
+	server_info->domain_name = talloc_strdup(server_info, "NT AUTHORITY");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->domain_name);
+
+	server_info->full_name = talloc_strdup(server_info, "Anonymous Logon");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->full_name);
+
+	server_info->logon_script = talloc_strdup(server_info, "");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->logon_script);
+
+	server_info->profile_path = talloc_strdup(server_info, "");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->profile_path);
+
+	server_info->home_directory = talloc_strdup(server_info, "");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->home_directory);
+
+	server_info->home_drive = talloc_strdup(server_info, "");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->home_drive);
+
+	server_info->logon_server = talloc_strdup(server_info, lp_netbios_name(global_loadparm));
+	NT_STATUS_HAVE_NO_MEMORY(server_info->logon_server);
+
+	server_info->last_logon = 0;
+	server_info->last_logoff = 0;
+	server_info->acct_expiry = 0;
+	server_info->last_password_change = 0;
+	server_info->allow_password_change = 0;
+	server_info->force_password_change = 0;
+
+	server_info->logon_count = 0;
+	server_info->bad_password_count = 0;
+
+	server_info->acct_flags = ACB_NORMAL;
+
+	server_info->authenticated = false;
+
+	*_server_info = server_info;
+
+	return NT_STATUS_OK;
+}
+
+NTSTATUS auth_generate_session_info(TALLOC_CTX *mem_ctx, 
+				    struct auth_serversupplied_info *server_info, 
+				    struct auth_session_info **_session_info) 
+{
+	struct auth_session_info *session_info;
+	NTSTATUS nt_status;
+
+	session_info = talloc(mem_ctx, struct auth_session_info);
+	NT_STATUS_HAVE_NO_MEMORY(session_info);
+
+	session_info->server_info = talloc_reference(session_info, server_info);
+
+	/* unless set otherwise, the session key is the user session
+	 * key from the auth subsystem */ 
+	session_info->session_key = server_info->user_session_key;
+
+	nt_status = security_token_create(session_info,
+					  server_info->account_sid,
+					  server_info->primary_group_sid,
+					  server_info->n_domain_groups,
+					  server_info->domain_groups,
+					  server_info->authenticated,
+					  &session_info->security_token);
+	NT_STATUS_NOT_OK_RETURN(nt_status);
+
+	session_info->credentials = NULL;
+
+	*_session_info = session_info;
+	return NT_STATUS_OK;
+}
+
+/**
+ * prints a struct auth_session_info security token to debug output.
+ */
+void auth_session_info_debug(int dbg_lev, 
+			     const struct auth_session_info *session_info)
+{
+	if (!session_info) {
+		DEBUG(dbg_lev, ("Session Info: (NULL)\n"));
+		return;	
+	}
+
+	security_token_debug(dbg_lev, session_info->security_token);
+}
+
+/**
+ * Make a server_info struct from the info3 returned by a domain logon 
+ */
+NTSTATUS make_server_info_netlogon_validation(TALLOC_CTX *mem_ctx,
+					      const char *account_name,
+					      uint16_t validation_level,
+					      union netr_Validation *validation,
+					      struct auth_serversupplied_info **_server_info)
+{
+	struct auth_serversupplied_info *server_info;
+	struct netr_SamBaseInfo *base = NULL;
+	int 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;
+		break;
+	case 6:
+		if (!validation || !validation->sam6) {
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+		base = &validation->sam6->base;
+		break;
+	default:
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	server_info = talloc(mem_ctx, struct auth_serversupplied_info);
+	NT_STATUS_HAVE_NO_MEMORY(server_info);
+
+	/*
+	   Here is where we should check the list of
+	   trusted domains, and verify that the SID 
+	   matches.
+	*/
+	server_info->account_sid = dom_sid_add_rid(server_info, base->domain_sid, base->rid);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->account_sid);
+
+
+	server_info->primary_group_sid = dom_sid_add_rid(server_info, base->domain_sid, base->primary_gid);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->primary_group_sid);
+
+	server_info->n_domain_groups = base->groups.count;
+	if (base->groups.count) {
+		server_info->domain_groups = talloc_array(server_info, struct dom_sid*, base->groups.count);
+		NT_STATUS_HAVE_NO_MEMORY(server_info->domain_groups);
+	} else {
+		server_info->domain_groups = NULL;
+	}
+
+	for (i = 0; i < base->groups.count; i++) {
+		server_info->domain_groups[i] = dom_sid_add_rid(server_info, base->domain_sid, base->groups.rids[i].rid);
+		NT_STATUS_HAVE_NO_MEMORY(server_info->domain_groups[i]);
+	}
+
+	/* 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
+         */
+
+	if (validation_level == 3) {
+		struct dom_sid **dgrps = server_info->domain_groups;
+		size_t sidcount = server_info->n_domain_groups + validation->sam3->sidcount;
+		size_t n_dgrps = server_info->n_domain_groups;
+
+		if (validation->sam3->sidcount > 0) {
+			dgrps = talloc_realloc(server_info, dgrps, struct dom_sid*, sidcount);
+			NT_STATUS_HAVE_NO_MEMORY(dgrps);
+
+			for (i = 0; i < validation->sam3->sidcount; i++) {
+				dgrps[n_dgrps + i] = talloc_reference(dgrps, validation->sam3->sids[i].sid);
+			}
+		}
+
+		server_info->n_domain_groups = sidcount;
+		server_info->domain_groups = dgrps;
+
+		/* Where are the 'global' sids?... */
+	}
+
+	if (base->account_name.string) {
+		server_info->account_name = talloc_reference(server_info, base->account_name.string);
+	} else {
+		server_info->account_name = talloc_strdup(server_info, account_name);
+		NT_STATUS_HAVE_NO_MEMORY(server_info->account_name);
+	}
+
+	server_info->domain_name = talloc_reference(server_info, base->domain.string);
+	server_info->full_name = talloc_reference(server_info, base->full_name.string);
+	server_info->logon_script = talloc_reference(server_info, base->logon_script.string);
+	server_info->profile_path = talloc_reference(server_info, base->profile_path.string);
+	server_info->home_directory = talloc_reference(server_info, base->home_directory.string);
+	server_info->home_drive = talloc_reference(server_info, base->home_drive.string);
+	server_info->logon_server = talloc_reference(server_info, base->logon_server.string);
+	server_info->last_logon = base->last_logon;
+	server_info->last_logoff = base->last_logoff;
+	server_info->acct_expiry = base->acct_expiry;
+	server_info->last_password_change = base->last_password_change;
+	server_info->allow_password_change = base->allow_password_change;
+	server_info->force_password_change = base->force_password_change;
+	server_info->logon_count = base->logon_count;
+	server_info->bad_password_count = base->bad_password_count;
+	server_info->acct_flags = base->acct_flags;
+
+	server_info->authenticated = true;
+
+	/* ensure we are never given NULL session keys */
+
+	if (all_zero(base->key.key, sizeof(base->key.key))) {
+		server_info->user_session_key = data_blob(NULL, 0);
+	} else {
+		server_info->user_session_key = data_blob_talloc(server_info, base->key.key, sizeof(base->key.key));
+		NT_STATUS_HAVE_NO_MEMORY(server_info->user_session_key.data);
+	}
+
+	if (all_zero(base->LMSessKey.key, sizeof(base->LMSessKey.key))) {
+		server_info->lm_session_key = data_blob(NULL, 0);
+	} else {
+		server_info->lm_session_key = data_blob_talloc(server_info, base->LMSessKey.key, sizeof(base->LMSessKey.key));
+		NT_STATUS_HAVE_NO_MEMORY(server_info->lm_session_key.data);
+	}
+
+	*_server_info = server_info;
+	return NT_STATUS_OK;
+}
+
+