[SCM] Samba Shared Repository - branch master updated

Andrew Bartlett abartlet at samba.org
Tue Feb 18 17:29:04 MST 2014


The branch, master has been updated
       via  79e2725 s3-auth: Pass mem_ctx to do_map_to_guest_server_info().
       via  4d792db s3-auth: Pass mem_ctx to auth_check_ntlm_password().
       via  3dc7226 s3-auth: Pass mem_ctx to make_server_info_sam().
      from  0d9bb86 build: find FILE_OFFSET_BITS via array

http://gitweb.samba.org/?p=samba.git;a=shortlog;h=master


- Log -----------------------------------------------------------------
commit 79e2725f339e7c5336b4053348c4266268de6ca3
Author: Andreas Schneider <asn at samba.org>
Date:   Tue Feb 18 13:52:49 2014 +0100

    s3-auth: Pass mem_ctx to do_map_to_guest_server_info().
    
    Change-Id: If53117023e3ab37c810193edd00a81d247fdde7a
    Reviewed-by: Andrew Bartlett <abartlet at samba.org>
    
    Autobuild-User(master): Andrew Bartlett <abartlet at samba.org>
    Autobuild-Date(master): Wed Feb 19 01:28:14 CET 2014 on sn-devel-104

commit 4d792db03f18aa164b565c7fdc7b446c174fba28
Author: Andreas Schneider <asn at samba.org>
Date:   Tue Feb 18 10:19:57 2014 +0100

    s3-auth: Pass mem_ctx to auth_check_ntlm_password().
    
    Coverity-Id: 1168009
    BUG: https://bugzilla.samba.org/show_bug.cgi?id=8598
    
    Signed-off-by: Andreas Schneider <asn at samba.org>
    
    Change-Id: Ie01674561a6a75239a13918d3190c2f21c3efc7a
    Reviewed-by: Andrew Bartlett <abartlet at samba.org>

commit 3dc72266005e87a291f5bf9847257e8c54314d39
Author: Andreas Schneider <asn at samba.org>
Date:   Tue Feb 18 10:02:57 2014 +0100

    s3-auth: Pass mem_ctx to make_server_info_sam().
    
    Coverity-Id: 1168009
    BUG: https://bugzilla.samba.org/show_bug.cgi?id=8598
    
    Signed-off-by: Andreas Schneider <asn at samba.org>
    
    Change-Id: Ie614b0654c3a7eec1ebb10dbb9763696eec795bd
    Reviewed-by: Andrew Bartlett <abartlet at samba.org>

-----------------------------------------------------------------------

Summary of changes:
 source3/auth/auth.c                         |   50 +++++++++++++++---------
 source3/auth/auth_ntlmssp.c                 |   13 ++++--
 source3/auth/auth_util.c                    |   12 +++--
 source3/auth/check_samsec.c                 |    2 +-
 source3/auth/proto.h                        |   21 ++++++----
 source3/auth/server_info_sam.c              |   56 +++++++++++++++++---------
 source3/auth/user_krb5.c                    |   12 +++--
 source3/rpc_server/netlogon/srv_netlog_nt.c |    6 ++-
 source3/torture/pdbtest.c                   |    5 ++-
 9 files changed, 111 insertions(+), 66 deletions(-)


Changeset truncated at 500 lines:

diff --git a/source3/auth/auth.c b/source3/auth/auth.c
index 0fc8b63..7718142 100644
--- a/source3/auth/auth.c
+++ b/source3/auth/auth.c
@@ -160,18 +160,19 @@ static bool check_domain_match(const char *user, const char *domain)
  *
  **/
 
-NTSTATUS auth_check_ntlm_password(const struct auth_context *auth_context,
-				  const struct auth_usersupplied_info *user_info, 
-				  struct auth_serversupplied_info **server_info)
+NTSTATUS auth_check_ntlm_password(TALLOC_CTX *mem_ctx,
+				  const struct auth_context *auth_context,
+				  const struct auth_usersupplied_info *user_info,
+				  struct auth_serversupplied_info **pserver_info)
 {
 	/* if all the modules say 'not for me' this is reasonable */
 	NTSTATUS nt_status = NT_STATUS_NO_SUCH_USER;
 	const char *unix_username;
 	auth_methods *auth_method;
-	TALLOC_CTX *mem_ctx;
 
-	if (!user_info || !auth_context || !server_info)
+	if (user_info == NULL || auth_context == NULL || pserver_info == NULL) {
 		return NT_STATUS_LOGON_FAILURE;
+	}
 
 	DEBUG(3, ("check_ntlm_password:  Checking password for unmapped user [%s]\\[%s]@[%s] with the new password interface\n", 
 		  user_info->client.domain_name, user_info->client.account_name, user_info->workstation_name));
@@ -205,17 +206,27 @@ NTSTATUS auth_check_ntlm_password(const struct auth_context *auth_context,
 		return NT_STATUS_LOGON_FAILURE;
 
 	for (auth_method = auth_context->auth_method_list;auth_method; auth_method = auth_method->next) {
+		struct auth_serversupplied_info *server_info;
+		TALLOC_CTX *tmp_ctx;
 		NTSTATUS result;
 
-		mem_ctx = talloc_init("%s authentication for user %s\\%s", auth_method->name,
-				      user_info->mapped.domain_name, user_info->client.account_name);
+		tmp_ctx = talloc_named(mem_ctx,
+				       0,
+				       "%s authentication for user %s\\%s",
+				       auth_method->name,
+				       user_info->mapped.domain_name,
+				       user_info->client.account_name);
 
-		result = auth_method->auth(auth_context, auth_method->private_data, mem_ctx, user_info, server_info);
+		result = auth_method->auth(auth_context,
+					   auth_method->private_data,
+					   tmp_ctx,
+					   user_info,
+					   &server_info);
 
 		/* check if the module did anything */
 		if ( NT_STATUS_V(result) == NT_STATUS_V(NT_STATUS_NOT_IMPLEMENTED) ) {
 			DEBUG(10,("check_ntlm_password: %s had nothing to say\n", auth_method->name));
-			talloc_destroy(mem_ctx);
+			TALLOC_FREE(tmp_ctx);
 			continue;
 		}
 
@@ -229,19 +240,20 @@ NTSTATUS auth_check_ntlm_password(const struct auth_context *auth_context,
 				  auth_method->name, user_info->client.account_name, nt_errstr(nt_status)));
 		}
 
-		talloc_destroy(mem_ctx);
-
-		if ( NT_STATUS_IS_OK(nt_status))
-		{
-				break;			
+		if (NT_STATUS_IS_OK(nt_status)) {
+			*pserver_info = talloc_steal(mem_ctx, server_info);
+			TALLOC_FREE(tmp_ctx);
+			break;
 		}
+
+		TALLOC_FREE(tmp_ctx);
 	}
 
 	/* successful authentication */
 
 	if (NT_STATUS_IS_OK(nt_status)) {
-		unix_username = (*server_info)->unix_name;
-		if (!(*server_info)->guest) {
+		unix_username = (*pserver_info)->unix_name;
+		if (!(*pserver_info)->guest) {
 			const char *rhost;
 
 			if (tsocket_address_is_inet(user_info->remote_host, "ip")) {
@@ -270,9 +282,9 @@ NTSTATUS auth_check_ntlm_password(const struct auth_context *auth_context,
 		}
 
 		if (NT_STATUS_IS_OK(nt_status)) {
-			DEBUG((*server_info)->guest ? 5 : 2, 
+			DEBUG((*pserver_info)->guest ? 5 : 2,
 			      ("check_ntlm_password:  %sauthentication for user [%s] -> [%s] -> [%s] succeeded\n",
-			       (*server_info)->guest ? "guest " : "",
+			       (*pserver_info)->guest ? "guest " : "",
 			       user_info->client.account_name,
 			       user_info->mapped.account_name,
 			       unix_username));
@@ -286,7 +298,7 @@ NTSTATUS auth_check_ntlm_password(const struct auth_context *auth_context,
 	DEBUG(2, ("check_ntlm_password:  Authentication for user [%s] -> [%s] FAILED with error %s\n",
 		  user_info->client.account_name, user_info->mapped.account_name,
 		  nt_errstr(nt_status)));
-	ZERO_STRUCTP(server_info);
+	ZERO_STRUCTP(pserver_info);
 
 	return nt_status;
 }
diff --git a/source3/auth/auth_ntlmssp.c b/source3/auth/auth_ntlmssp.c
index f99bd44..d4fe901 100644
--- a/source3/auth/auth_ntlmssp.c
+++ b/source3/auth/auth_ntlmssp.c
@@ -134,8 +134,10 @@ NTSTATUS auth3_check_password(struct auth4_context *auth4_context,
 
 	mapped_user_info->flags = user_info->flags;
 
-	nt_status = auth_check_ntlm_password(auth_context,
-					     mapped_user_info, &server_info);
+	nt_status = auth_check_ntlm_password(mem_ctx,
+					     auth_context,
+					     mapped_user_info,
+					     &server_info);
 
 	if (!NT_STATUS_IS_OK(nt_status)) {
 		DEBUG(5,("Checking NTLMSSP password for %s\\%s failed: %s\n",
@@ -149,10 +151,11 @@ NTSTATUS auth3_check_password(struct auth4_context *auth4_context,
 	free_user_info(&mapped_user_info);
 
 	if (!NT_STATUS_IS_OK(nt_status)) {
-		nt_status = do_map_to_guest_server_info(nt_status,
-							&server_info,
+		nt_status = do_map_to_guest_server_info(mem_ctx,
+							nt_status,
 							user_info->client.account_name,
-							user_info->client.domain_name);
+							user_info->client.domain_name,
+							&server_info);
 		*server_returned_info = talloc_steal(mem_ctx, server_info);
 		return nt_status;
 	}
diff --git a/source3/auth/auth_util.c b/source3/auth/auth_util.c
index 2b6b13f..fb9e8c8 100644
--- a/source3/auth/auth_util.c
+++ b/source3/auth/auth_util.c
@@ -1536,9 +1536,11 @@ bool is_trusted_domain(const char* dom_name)
   on a logon error possibly map the error to success if "map to guest"
   is set approriately
 */
-NTSTATUS do_map_to_guest_server_info(NTSTATUS status,
-				     struct auth_serversupplied_info **server_info,
-				     const char *user, const char *domain)
+NTSTATUS do_map_to_guest_server_info(TALLOC_CTX *mem_ctx,
+				     NTSTATUS status,
+				     const char *user,
+				     const char *domain,
+				     struct auth_serversupplied_info **server_info)
 {
 	user = user ? user : "";
 	domain = domain ? domain : "";
@@ -1548,13 +1550,13 @@ NTSTATUS do_map_to_guest_server_info(NTSTATUS status,
 		    (lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_PASSWORD)) {
 			DEBUG(3,("No such user %s [%s] - using guest account\n",
 				 user, domain));
-			return make_server_info_guest(NULL, server_info);
+			return make_server_info_guest(mem_ctx, server_info);
 		}
 	} else if (NT_STATUS_EQUAL(status, NT_STATUS_WRONG_PASSWORD)) {
 		if (lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_PASSWORD) {
 			DEBUG(3,("Registered username %s for guest access\n",
 				user));
-			return make_server_info_guest(NULL, server_info);
+			return make_server_info_guest(mem_ctx, server_info);
 		}
 	}
 
diff --git a/source3/auth/check_samsec.c b/source3/auth/check_samsec.c
index 7ed8cc2..b6cac60 100644
--- a/source3/auth/check_samsec.c
+++ b/source3/auth/check_samsec.c
@@ -482,7 +482,7 @@ NTSTATUS check_sam_security(const DATA_BLOB *challenge,
 	}
 
 	become_root();
-	nt_status = make_server_info_sam(server_info, sampass);
+	nt_status = make_server_info_sam(mem_ctx, sampass, server_info);
 	unbecome_root();
 
 	TALLOC_FREE(sampass);
diff --git a/source3/auth/proto.h b/source3/auth/proto.h
index 7abca07..7b8959f 100644
--- a/source3/auth/proto.h
+++ b/source3/auth/proto.h
@@ -65,6 +65,8 @@ NTSTATUS auth_get_ntlm_challenge(struct auth_context *auth_context,
  * struct.  When the return is other than NT_STATUS_OK the contents 
  * of that structure is undefined.
  *
+ * @param mem_ctx   The memory context to use to allocate server_info
+ *
  * @param user_info Contains the user supplied components, including the passwords.
  *                  Must be created with make_user_info() or one of its wrappers.
  *
@@ -79,9 +81,9 @@ NTSTATUS auth_get_ntlm_challenge(struct auth_context *auth_context,
  * @return An NTSTATUS with NT_STATUS_OK or an appropriate error.
  *
  **/
-
-NTSTATUS auth_check_ntlm_password(const struct auth_context *auth_context,
-				  const struct auth_usersupplied_info *user_info, 
+NTSTATUS auth_check_ntlm_password(TALLOC_CTX *mem_ctx,
+				  const struct auth_context *auth_context,
+				  const struct auth_usersupplied_info *user_info,
 				  struct auth_serversupplied_info **server_info);
 
 /* The following definitions come from auth/auth_builtin.c  */
@@ -190,8 +192,9 @@ bool make_user_info_guest(const struct tsocket_address *remote_address,
 			  struct auth_usersupplied_info **user_info);
 
 struct samu;
-NTSTATUS make_server_info_sam(struct auth_serversupplied_info **server_info,
-			      struct samu *sampass);
+NTSTATUS make_server_info_sam(TALLOC_CTX *mem_ctx,
+			      struct samu *sampass,
+			      struct auth_serversupplied_info **pserver_info);
 NTSTATUS create_local_token(TALLOC_CTX *mem_ctx,
 			    const struct auth_serversupplied_info *server_info,
 			    DATA_BLOB *session_key,
@@ -261,9 +264,11 @@ NTSTATUS make_user_info(struct auth_usersupplied_info **ret_user_info,
 			enum auth_password_state password_state);
 void free_user_info(struct auth_usersupplied_info **user_info);
 
-NTSTATUS do_map_to_guest_server_info(NTSTATUS status,
-				     struct auth_serversupplied_info **server_info,
-				     const char *user, const char *domain);
+NTSTATUS do_map_to_guest_server_info(TALLOC_CTX *mem_ctx,
+				     NTSTATUS status,
+				     const char *user,
+				     const char *domain,
+				     struct auth_serversupplied_info **server_info);
 
 /* The following definitions come from auth/auth_winbind.c  */
 
diff --git a/source3/auth/server_info_sam.c b/source3/auth/server_info_sam.c
index 5d657f9..47087b1 100644
--- a/source3/auth/server_info_sam.c
+++ b/source3/auth/server_info_sam.c
@@ -58,39 +58,51 @@ static bool is_our_machine_account(const char *username)
  Make (and fill) a user_info struct from a struct samu
 ***************************************************************************/
 
-NTSTATUS make_server_info_sam(struct auth_serversupplied_info **server_info,
-			      struct samu *sampass)
+NTSTATUS make_server_info_sam(TALLOC_CTX *mem_ctx,
+			      struct samu *sampass,
+			      struct auth_serversupplied_info **pserver_info)
 {
 	struct passwd *pwd;
-	struct auth_serversupplied_info *result;
+	struct auth_serversupplied_info *server_info;
 	const char *username = pdb_get_username(sampass);
+	TALLOC_CTX *tmp_ctx;
 	NTSTATUS status;
 
-	if ( !(result = make_server_info(NULL)) ) {
+	tmp_ctx = talloc_stackframe();
+	if (tmp_ctx == NULL) {
 		return NT_STATUS_NO_MEMORY;
 	}
 
-	if ( !(pwd = Get_Pwnam_alloc(result, username)) ) {
+	server_info = make_server_info(tmp_ctx);
+	if (server_info == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	pwd = Get_Pwnam_alloc(tmp_ctx, username);
+	if (pwd == NULL) {
 		DEBUG(1, ("User %s in passdb, but getpwnam() fails!\n",
 			  pdb_get_username(sampass)));
-		TALLOC_FREE(result);
-		return NT_STATUS_NO_SUCH_USER;
+		status = NT_STATUS_NO_SUCH_USER;
+		goto out;
 	}
 
-	status = samu_to_SamInfo3(result, sampass, lp_netbios_name(),
-				  &result->info3, &result->extra);
+	status = samu_to_SamInfo3(server_info,
+				  sampass,
+				  lp_netbios_name(),
+				  &server_info->info3,
+				  &server_info->extra);
 	if (!NT_STATUS_IS_OK(status)) {
-		TALLOC_FREE(result);
-		return status;
+		goto out;
 	}
 
-	result->unix_name = pwd->pw_name;
-	/* Ensure that we keep pwd->pw_name, because we will free pwd below */
-	talloc_steal(result, pwd->pw_name);
-	result->utok.gid = pwd->pw_gid;
-	result->utok.uid = pwd->pw_uid;
+	server_info->unix_name = talloc_strdup(server_info, pwd->pw_name);
+	if (server_info->unix_name == NULL) {
+		status = NT_STATUS_NO_MEMORY;
+		goto out;
+	}
 
-	TALLOC_FREE(pwd);
+	server_info->utok.gid = pwd->pw_gid;
+	server_info->utok.uid = pwd->pw_uid;
 
 	if (IS_DC && is_our_machine_account(username)) {
 		/*
@@ -110,9 +122,13 @@ NTSTATUS make_server_info_sam(struct auth_serversupplied_info **server_info,
 	}
 
 	DEBUG(5,("make_server_info_sam: made server info for user %s -> %s\n",
-		 pdb_get_username(sampass), result->unix_name));
+		 pdb_get_username(sampass), server_info->unix_name));
+
+	*pserver_info = talloc_steal(mem_ctx, server_info);
 
-	*server_info = result;
+	status = NT_STATUS_OK;
+out:
+	talloc_free(tmp_ctx);
 
-	return NT_STATUS_OK;
+	return status;
 }
diff --git a/source3/auth/user_krb5.c b/source3/auth/user_krb5.c
index 2650e27..6b8fad2 100644
--- a/source3/auth/user_krb5.c
+++ b/source3/auth/user_krb5.c
@@ -223,9 +223,6 @@ NTSTATUS make_session_info_krb5(TALLOC_CTX *mem_ctx,
 		 * SID consistency with ntlmssp session setup
 		 */
 		struct samu *sampass;
-		/* The stupid make_server_info_XX functions here
-		   don't take a talloc context. */
-		struct auth_serversupplied_info *tmp = NULL;
 
 		sampass = samu_new(talloc_tos());
 		if (sampass == NULL) {
@@ -235,14 +232,19 @@ NTSTATUS make_session_info_krb5(TALLOC_CTX *mem_ctx,
 		if (pdb_getsampwnam(sampass, username)) {
 			DEBUG(10, ("found user %s in passdb, calling "
 				   "make_server_info_sam\n", username));
-			status = make_server_info_sam(&tmp, sampass);
+			status = make_server_info_sam(mem_ctx,
+						      sampass,
+						      &server_info);
 		} else {
 			/*
 			 * User not in passdb, make it up artificially
 			 */
 			DEBUG(10, ("didn't find user %s in passdb, calling "
 				   "make_server_info_pw\n", username));
-			status = make_server_info_pw(mem_ctx, username, pw, &tmp);
+			status = make_server_info_pw(mem_ctx,
+						     username,
+						     pw,
+						     &server_info);
 		}
 
 		TALLOC_FREE(sampass);
diff --git a/source3/rpc_server/netlogon/srv_netlog_nt.c b/source3/rpc_server/netlogon/srv_netlog_nt.c
index e3e7a3e..f600f74 100644
--- a/source3/rpc_server/netlogon/srv_netlog_nt.c
+++ b/source3/rpc_server/netlogon/srv_netlog_nt.c
@@ -1646,8 +1646,10 @@ static NTSTATUS _netr_LogonSamLogon_base(struct pipes_struct *p,
 	} /* end switch */
 
 	if ( NT_STATUS_IS_OK(status) ) {
-		status = auth_check_ntlm_password(auth_context,
-			user_info, &server_info);
+		status = auth_check_ntlm_password(p->mem_ctx,
+						  auth_context,
+						  user_info,
+						  &server_info);
 	}
 
 	TALLOC_FREE(auth_context);
diff --git a/source3/torture/pdbtest.c b/source3/torture/pdbtest.c
index df2c326..990917f 100644
--- a/source3/torture/pdbtest.c
+++ b/source3/torture/pdbtest.c
@@ -304,7 +304,10 @@ static bool test_auth(TALLOC_CTX *mem_ctx, struct samu *pdb_entry)
 		return False;
 	}
 	
-	status = auth_check_ntlm_password(auth_context, user_info, &server_info);
+	status = auth_check_ntlm_password(mem_ctx,
+					  auth_context,
+					  user_info,
+					  &server_info);
 
 	if (!NT_STATUS_IS_OK(status)) {
 		DEBUG(0, ("Failed to test authentication with auth module: %s\n", nt_errstr(status)));


-- 
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