s3:auth: remove unused auth_server.c

metze

3 files changed, 0 insertions, 500 deletions

diff --git a/source3/auth/auth_server.c b/source3/auth/auth_server.c
deleted file mode 100644
index 3bd69cda4d..0000000000
--- a/source3/auth/auth_server.c
+++ /dev/null
@@ -1,487 +0,0 @@
-/* 
-   Unix SMB/CIFS implementation.
-   Authenticate to a remote server
-   Copyright (C) Andrew Tridgell 1992-1998
-   Copyright (C) Andrew Bartlett 2001
-
-   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.h"
-#include "system/passwd.h"
-#include "smbd/smbd.h"
-#include "libsmb/libsmb.h"
-
-#undef DBGC_CLASS
-#define DBGC_CLASS DBGC_AUTH
-
-extern userdom_struct current_user_info;
-
-/****************************************************************************
- Support for server level security.
-****************************************************************************/
-
-static struct cli_state *server_cryptkey(TALLOC_CTX *mem_ctx)
-{
-	struct cli_state *cli = NULL;
-	char *desthost = NULL;
-	struct sockaddr_storage dest_ss;
-	const char *p;
-	char *pserver = NULL;
-	bool connected_ok = False;
-	struct named_mutex *mutex = NULL;
-	NTSTATUS status;
-	/* security = server just can't function with spnego */
-	int flags = CLI_FULL_CONNECTION_DONT_SPNEGO;
-	uint16_t sec_mode = 0;
-
-        pserver = talloc_strdup(mem_ctx, lp_passwordserver());
-	p = pserver;
-
-        while(next_token_talloc(mem_ctx, &p, &desthost, LIST_SEP)) {
-
-		desthost = talloc_sub_basic(mem_ctx,
-				current_user_info.smb_name,
-				current_user_info.domain,
-				desthost);
-		if (!desthost) {
-			return NULL;
-		}
-		strupper_m(desthost);
-
-		if (strequal(desthost, myhostname())) {
-			DEBUG(1,("Password server loop - disabling "
-				 "password server %s\n", desthost));
-			continue;
-		}
-
-		if(!resolve_name( desthost, &dest_ss, 0x20, false)) {
-			DEBUG(1,("server_cryptkey: Can't resolve address for %s\n",desthost));
-			continue;
-		}
-
-		if (ismyaddr((struct sockaddr *)(void *)&dest_ss)) {
-			DEBUG(1,("Password server loop - disabling password server %s\n",desthost));
-			continue;
-		}
-
-		/* we use a mutex to prevent two connections at once - when a
-		   Win2k PDC get two connections where one hasn't completed a
-		   session setup yet it will send a TCP reset to the first
-		   connection (tridge) */
-
-		mutex = grab_named_mutex(talloc_tos(), desthost, 10);
-		if (mutex == NULL) {
-			return NULL;
-		}
-
-		status = cli_connect_nb(desthost, &dest_ss, 0, 0x20,
-					lp_netbios_name(), SMB_SIGNING_DEFAULT,
-					flags, &cli);
-		if (NT_STATUS_IS_OK(status)) {
-			DEBUG(3,("connected to password server %s\n",desthost));
-			connected_ok = True;
-			break;
-		}
-		DEBUG(10,("server_cryptkey: failed to connect to server %s. Error %s\n",
-			desthost, nt_errstr(status) ));
-		TALLOC_FREE(mutex);
-	}
-
-	if (!connected_ok) {
-		DEBUG(0,("password server not available\n"));
-		return NULL;
-	}
-
-	DEBUG(3,("got session\n"));
-
-	status = cli_negprot(cli, PROTOCOL_NT1);
-
-	if (!NT_STATUS_IS_OK(status)) {
-		TALLOC_FREE(mutex);
-		DEBUG(1, ("%s rejected the negprot: %s\n",
-			  desthost, nt_errstr(status)));
-		cli_shutdown(cli);
-		return NULL;
-	}
-
-	sec_mode = cli_state_security_mode(cli);
-	if (cli_state_protocol(cli) < PROTOCOL_LANMAN2 ||
-	    !(sec_mode & NEGOTIATE_SECURITY_USER_LEVEL)) {
-		TALLOC_FREE(mutex);
-		DEBUG(1,("%s isn't in user level security mode\n",desthost));
-		cli_shutdown(cli);
-		return NULL;
-	}
-
-	/* Get the first session setup done quickly, to avoid silly
-	   Win2k bugs.  (The next connection to the server will kill
-	   this one...
-	*/
-
-	status = cli_session_setup(cli, "", "", 0, "", 0, "");
-	if (!NT_STATUS_IS_OK(status)) {
-		TALLOC_FREE(mutex);
-		DEBUG(0,("%s rejected the initial session setup (%s)\n",
-			 desthost, nt_errstr(status)));
-		cli_shutdown(cli);
-		return NULL;
-	}
-
-	TALLOC_FREE(mutex);
-
-	DEBUG(3,("password server OK\n"));
-
-	return cli;
-}
-
-struct server_security_state {
-	struct cli_state *cli;
-};
-
-/****************************************************************************
- Send a 'keepalive' packet down the cli pipe.
-****************************************************************************/
-
-static bool send_server_keepalive(const struct timeval *now,
-				  void *private_data)
-{
-	struct server_security_state *state = talloc_get_type_abort(
-		private_data, struct server_security_state);
-	NTSTATUS status;
-	unsigned char garbage[16];
-
-	if (!cli_state_is_connected(state->cli)) {
-		return false;
-	}
-
-	/* Ping the server to keep the connection alive using SMBecho. */
-	memset(garbage, 0xf0, sizeof(garbage));
-	status = cli_echo(state->cli, 1, data_blob_const(garbage, sizeof(garbage)));
-	if (NT_STATUS_IS_OK(status)) {
-		return true;
-	}
-
-	DEBUG(2,("send_server_keepalive: password server SMBecho failed: %s\n",
-		 nt_errstr(status)));
-	cli_shutdown(state->cli);
-	state->cli = NULL;
-	return false;
-}
-
-static int destroy_server_security(struct server_security_state *state)
-{
-	if (state->cli) {
-		cli_shutdown(state->cli);
-	}
-	return 0;
-}
-
-static struct server_security_state *make_server_security_state(struct cli_state *cli)
-{
-	struct server_security_state *result;
-
-	if (!(result = talloc(NULL, struct server_security_state))) {
-		DEBUG(0, ("talloc failed\n"));
-		cli_shutdown(cli);
-		return NULL;
-	}
-
-	result->cli = cli;
-	talloc_set_destructor(result, destroy_server_security);
-
-	if (lp_keepalive() != 0) {
-		struct timeval interval;
-		interval.tv_sec = lp_keepalive();
-		interval.tv_usec = 0;
-
-		if (event_add_idle(server_event_context(), result, interval,
-				   "server_security_keepalive",
-				   send_server_keepalive,
-				   result) == NULL) {
-			DEBUG(0, ("event_add_idle failed\n"));
-			TALLOC_FREE(result);
-			return NULL;
-		}
-	}
-
-	return result;
-}
-
-/****************************************************************************
- Get the challenge out of a password server.
-****************************************************************************/
-
-static DATA_BLOB auth_get_challenge_server(const struct auth_context *auth_context,
-					   void **my_private_data, 
-					   TALLOC_CTX *mem_ctx)
-{
-	struct cli_state *cli = server_cryptkey(mem_ctx);
-
-	if (cli) {
-		uint16_t sec_mode = cli_state_security_mode(cli);
-		const uint8_t *server_challenge = cli_state_server_challenge(cli);
-
-		DEBUG(3,("using password server validation\n"));
-
-		if ((sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0) {
-			/* We can't work with unencrypted password servers
-			   unless 'encrypt passwords = no' */
-			DEBUG(5,("make_auth_info_server: Server is unencrypted, no challenge available..\n"));
-
-			/* However, it is still a perfectly fine connection
-			   to pass that unencrypted password over */
-			*my_private_data =
-				(void *)make_server_security_state(cli);
-			return data_blob_null;
-		}
-
-		if (!(*my_private_data = (void *)make_server_security_state(cli))) {
-			return data_blob(NULL,0);
-		}
-
-		/* The return must be allocated on the caller's mem_ctx, as our own will be
-		   destoyed just after the call. */
-		return data_blob_talloc(discard_const_p(TALLOC_CTX, auth_context), server_challenge ,8);
-	} else {
-		return data_blob_null;
-	}
-}
-
-
-/****************************************************************************
- Check for a valid username and password in security=server mode.
-  - Validate a password with the password server.
-****************************************************************************/
-
-static NTSTATUS check_smbserver_security(const struct auth_context *auth_context,
-					 void *my_private_data, 
-					 TALLOC_CTX *mem_ctx,
-					 const struct auth_usersupplied_info *user_info,
-					 struct auth_serversupplied_info **server_info)
-{
-	struct server_security_state *state = NULL;
-	struct cli_state *cli = NULL;
-	static bool tested_password_server = False;
-	static bool bad_password_server = False;
-	NTSTATUS nt_status = NT_STATUS_NOT_IMPLEMENTED;
-	bool locally_made_cli = False;
-	uint16_t sec_mode = 0;
-
-	DEBUG(10, ("check_smbserver_security: Check auth for: [%s]\n",
-		user_info->mapped.account_name));
-
-	if (my_private_data == NULL) {
-		DEBUG(10,("check_smbserver_security: "
-			"password server is not connected\n"));
-		return NT_STATUS_LOGON_FAILURE;
-	}
-
-	state = talloc_get_type_abort(my_private_data, struct server_security_state);
-	cli = state->cli;
-
-	if (cli) {
-	} else {
-		cli = server_cryptkey(mem_ctx);
-		locally_made_cli = True;
-	}
-
-	if (!cli_state_is_connected(cli)) {
-		DEBUG(1,("password server is not connected (cli not initialised)\n"));
-		return NT_STATUS_LOGON_FAILURE;
-	}  
-
-	sec_mode = cli_state_security_mode(cli);
-	if ((sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0) {
-		if (user_info->password_state != AUTH_PASSWORD_PLAIN) {
-			DEBUG(1,("password server %s is plaintext, but we are encrypted. This just can't work :-(\n", cli_state_remote_name(cli)));
-			return NT_STATUS_LOGON_FAILURE;		
-		}
-	} else {
-		const uint8_t *server_challenge = cli_state_server_challenge(cli);
-
-		if (memcmp(server_challenge, auth_context->challenge.data, 8) != 0) {
-			DEBUG(1,("the challenge that the password server (%s) supplied us is not the one we gave our client. This just can't work :-(\n", cli_state_remote_name(cli)));
-			return NT_STATUS_LOGON_FAILURE;		
-		}
-	}
-
-	/*
-	 * Attempt a session setup with a totally incorrect password.
-	 * If this succeeds with the guest bit *NOT* set then the password
-	 * server is broken and is not correctly setting the guest bit. We
-	 * need to detect this as some versions of NT4.x are broken. JRA.
-	 */
-
-	/* I sure as hell hope that there aren't servers out there that take 
-	 * NTLMv2 and have this bug, as we don't test for that... 
-	 *  - abartlet@samba.org
-	 */
-
-	if ((!tested_password_server) && (lp_paranoid_server_security())) {
-		unsigned char badpass[24];
-		char *baduser = NULL;
-
-		memset(badpass, 0x1f, sizeof(badpass));
-
-		if((user_info->password.response.nt.length == sizeof(badpass)) &&
-		   !memcmp(badpass, user_info->password.response.nt.data, sizeof(badpass))) {
-			/* 
-			 * Very unlikely, our random bad password is the same as the users
-			 * password.
-			 */
-			memset(badpass, badpass[0]+1, sizeof(badpass));
-		}
-
-		baduser = talloc_asprintf(mem_ctx,
-					"%s%s",
-					INVALID_USER_PREFIX,
-					lp_netbios_name());
-		if (!baduser) {
-			return NT_STATUS_NO_MEMORY;
-		}
-
-		if (NT_STATUS_IS_OK(cli_session_setup(cli, baduser,
-						      (char *)badpass,
-						      sizeof(badpass), 
-						      (char *)badpass,
-						      sizeof(badpass),
-						      user_info->mapped.domain_name))) {
-
-			/*
-			 * We connected to the password server so we
-			 * can say we've tested it.
-			 */
-			tested_password_server = True;
-
-			if (!cli->is_guestlogin) {
-				DEBUG(0,("server_validate: password server %s allows users as non-guest \
-with a bad password.\n", cli_state_remote_name(cli)));
-				DEBUG(0,("server_validate: This is broken (and insecure) behaviour. Please do not \
-use this machine as the password server.\n"));
-				cli_ulogoff(cli);
-
-				/*
-				 * Password server has the bug.
-				 */
-				bad_password_server = True;
-				return NT_STATUS_LOGON_FAILURE;
-			}
-			cli_ulogoff(cli);
-		}
-	} else {
-
-		/*
-		 * We have already tested the password server.
-		 * Fail immediately if it has the bug.
-		 */
-
-		if(bad_password_server) {
-			DEBUG(0,("server_validate: [1] password server %s allows users as non-guest \
-with a bad password.\n", cli_state_remote_name(cli)));
-			DEBUG(0,("server_validate: [1] This is broken (and insecure) behaviour. Please do not \
-use this machine as the password server.\n"));
-			return NT_STATUS_LOGON_FAILURE;
-		}
-	}
-
-	/*
-	 * Now we know the password server will correctly set the guest bit, or is
-	 * not guest enabled, we can try with the real password.
-	 */
-	switch (user_info->password_state) {
-	case AUTH_PASSWORD_PLAIN:
-		/* Plaintext available */
-		nt_status = cli_session_setup(
-			cli, user_info->client.account_name,
-			user_info->password.plaintext,
-			strlen(user_info->password.plaintext),
-			NULL, 0, user_info->mapped.domain_name);
-		break;
-
-	/* currently the hash values include a challenge-response as well */
-	case AUTH_PASSWORD_HASH:
-	case AUTH_PASSWORD_RESPONSE:
-		nt_status = cli_session_setup(
-			cli, user_info->client.account_name,
-			(char *)user_info->password.response.lanman.data,
-			user_info->password.response.lanman.length,
-			(char *)user_info->password.response.nt.data,
-			user_info->password.response.nt.length,
-			user_info->mapped.domain_name);
-		break;
-	default:
-		DEBUG(0,("user_info constructed for user '%s' was invalid - password_state=%u invalid.\n",user_info->mapped.account_name, user_info->password_state));
-		nt_status = NT_STATUS_INTERNAL_ERROR;
-	}
-
-	if (!NT_STATUS_IS_OK(nt_status)) {
-		DEBUG(1,("password server %s rejected the password: %s\n",
-			 cli_state_remote_name(cli), nt_errstr(nt_status)));
-	}
-
-	/* if logged in as guest then reject */
-	if (cli->is_guestlogin) {
-		DEBUG(1,("password server %s gave us guest only\n",
-			 cli_state_remote_name(cli)));
-		nt_status = NT_STATUS_LOGON_FAILURE;
-	}
-
-	cli_ulogoff(cli);
-
-	if (NT_STATUS_IS_OK(nt_status)) {
-		char *real_username = NULL;
-		struct passwd *pass = NULL;
-
-		if ( (pass = smb_getpwnam(talloc_tos(), user_info->mapped.account_name,
-			&real_username, True )) != NULL )
-		{
-			nt_status = make_server_info_pw(server_info, pass->pw_name, pass);
-			TALLOC_FREE(pass);
-			TALLOC_FREE(real_username);
-		}
-		else
-		{
-			nt_status = NT_STATUS_NO_SUCH_USER;
-		}
-	}
-
-	if (locally_made_cli) {
-		cli_shutdown(cli);
-	}
-
-	return(nt_status);
-}
-
-static NTSTATUS auth_init_smbserver(struct auth_context *auth_context, const char* param, auth_methods **auth_method) 
-{
-	struct auth_methods *result;
-
-	result = talloc_zero(auth_context, struct auth_methods);
-	if (result == NULL) {
-		return NT_STATUS_NO_MEMORY;
-	}
-	result->name = "smbserver";
-	result->auth = check_smbserver_security;
-	result->get_chal = auth_get_challenge_server;
-
-        *auth_method = result;
-	return NT_STATUS_OK;
-}
-
-NTSTATUS auth_server_init(void)
-{
-	return smb_register_auth(AUTH_INTERFACE_VERSION, "smbserver", auth_init_smbserver);
-}
diff --git a/source3/auth/proto.h b/source3/auth/proto.h
index 2754e86ddb..d383f38cdc 100644
--- a/source3/auth/proto.h
+++ b/source3/auth/proto.h
@@ -140,10 +140,6 @@ NTSTATUS check_sam_security_info3(const DATA_BLOB *challenge,
 				  struct netr_SamInfo3 **pinfo3);
 NTSTATUS auth_sam_init(void);
 
-/* The following definitions come from auth/auth_server.c  */
-
-NTSTATUS auth_server_init(void);
-
 /* The following definitions come from auth/auth_unix.c  */
 
 NTSTATUS auth_unix_init(void);
diff --git a/source3/auth/wscript_build b/source3/auth/wscript_build
index cf0db42431..54d710c95d 100644
--- a/source3/auth/wscript_build
+++ b/source3/auth/wscript_build
@@ -3,7 +3,6 @@
 AUTH_BUILTIN_SRC = 'auth_builtin.c'
 AUTH_DOMAIN_SRC = 'auth_domain.c'
 AUTH_SAM_SRC = 'auth_sam.c'
-AUTH_SERVER_SRC = 'auth_server.c'
 AUTH_UNIX_SRC = 'auth_unix.c'
 AUTH_WINBIND_SRC = 'auth_winbind.c'
 AUTH_WBC_SRC = 'auth_wbc.c'
@@ -69,14 +68,6 @@ bld.SAMBA3_MODULE('auth_wbc',
                  internal_module=bld.SAMBA3_IS_STATIC_MODULE('auth_wbc'),
                  enabled=bld.SAMBA3_IS_ENABLED_MODULE('auth_wbc'))
 
-bld.SAMBA3_MODULE('auth_server',
-                 subsystem='auth',
-                 source=AUTH_SERVER_SRC,
-                 deps='samba-util',
-                 init_function='',
-                 internal_module=bld.SAMBA3_IS_STATIC_MODULE('auth_server'),
-                 enabled=bld.SAMBA3_IS_ENABLED_MODULE('auth_server'))
-
 bld.SAMBA3_MODULE('auth_domain',
                  subsystem='auth',
                  source=AUTH_DOMAIN_SRC,