/*
- Unix SMB/Netbios implementation.
- Version 1.9.
+ Unix SMB/CIFS implementation.
Authenticate to a remote server
Copyright (C) Andrew Tridgell 1992-1998
Copyright (C) Andrew Bartlett 2001
#include "includes.h"
-extern pstring global_myname;
+#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(void)
+static struct cli_state *server_cryptkey(TALLOC_CTX *mem_ctx)
{
struct cli_state *cli = NULL;
fstring desthost;
struct in_addr dest_ip;
- char *p, *pserver;
+ const char *p;
+ char *pserver;
BOOL connected_ok = False;
if (!(cli = cli_initialise(cli)))
/* security = server just can't function with spnego */
cli->use_spnego = False;
- pserver = strdup(lp_passwordserver());
+ pserver = talloc_strdup(mem_ctx, lp_passwordserver());
p = pserver;
while(next_token( &p, desthost, LIST_SEP, sizeof(desthost))) {
- standard_sub_basic(desthost);
+ standard_sub_basic(current_user_info.smb_name, desthost, sizeof(desthost));
strupper(desthost);
if(!resolve_name( desthost, &dest_ip, 0x20)) {
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) */
+
+ if (!grab_server_mutex(desthost)) {
+ return NULL;
+ }
+
if (cli_connect(cli, desthost, &dest_ip)) {
DEBUG(3,("connected to password server %s\n",desthost));
connected_ok = True;
}
}
- SAFE_FREE(pserver);
-
if (!connected_ok) {
+ release_server_mutex();
DEBUG(0,("password server not available\n"));
cli_shutdown(cli);
return NULL;
}
-
- if (!attempt_netbios_session_request(cli, global_myname, desthost, &dest_ip))
+
+ if (!attempt_netbios_session_request(cli, global_myname(),
+ desthost, &dest_ip)) {
+ release_server_mutex();
+ DEBUG(1,("password server fails session request\n"));
+ cli_shutdown(cli);
return NULL;
+ }
if (strequal(desthost,myhostname())) {
exit_server("Password server loop!");
if (!cli_negprot(cli)) {
DEBUG(1,("%s rejected the negprot\n",desthost));
+ release_server_mutex();
cli_shutdown(cli);
return NULL;
}
if (cli->protocol < PROTOCOL_LANMAN2 ||
- !(cli->sec_mode & 1)) {
+ !(cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL)) {
DEBUG(1,("%s isn't in user level security mode\n",desthost));
+ release_server_mutex();
cli_shutdown(cli);
return NULL;
}
- DEBUG(3,("password server OK\n"));
+ /* Get the first session setup done quickly, to avoid silly
+ Win2k bugs. (The next connection to the server will kill
+ this one...
+ */
+ if (!cli_session_setup(cli, "", "", 0, "", 0,
+ "")) {
+ DEBUG(0,("%s rejected the initial session setup (%s)\n",
+ desthost, cli_errstr(cli)));
+ release_server_mutex();
+ cli_shutdown(cli);
+ return NULL;
+ }
+
+ release_server_mutex();
+
+ DEBUG(3,("password server OK\n"));
+
return cli;
}
struct cli_state **cli = (struct cli_state **)private_data_pointer;
if (*cli && (*cli)->initialised) {
cli_shutdown(*cli);
-
- SAFE_FREE(*cli);
}
}
if (!send_keepalive((*cli)->fd)) {
DEBUG( 2, ( "password server keepalive failed.\n"));
cli_shutdown(*cli);
- SAFE_FREE(*cli);
}
}
}
Get the challenge out of a password server.
****************************************************************************/
-static DATA_BLOB auth_get_challenge_server(void **my_private_data, const struct authsupplied_info *auth_info)
+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();
+ struct cli_state *cli = server_cryptkey(mem_ctx);
if (cli) {
DEBUG(3,("using password server validation\n"));
- if ((cli->sec_mode & 2) == 0) {
+
+ if ((cli->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 *)cli;
return data_blob(NULL, 0);
}
*my_private_data = (void *)cli;
-
- return data_blob(cli->secblob.data,8);
+
+ /* 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(auth_context->mem_ctx, cli->secblob.data,8);
} else {
return data_blob(NULL, 0);
}
- Validate a password with the password server.
****************************************************************************/
-static NTSTATUS check_smbserver_security(void *my_private_data,
- const auth_usersupplied_info *user_info,
- const auth_authsupplied_info *auth_info,
- auth_serversupplied_info **server_info)
+static NTSTATUS check_smbserver_security(const struct auth_context *auth_context,
+ void *my_private_data,
+ TALLOC_CTX *mem_ctx,
+ const auth_usersupplied_info *user_info,
+ auth_serversupplied_info **server_info)
{
struct cli_state *cli;
static unsigned char badpass[24];
* password file.
*/
- if(is_netbios_alias_or_name(user_info->domain.str)) {
+ if(is_myname(user_info->domain.str)) {
DEBUG(3,("check_smbserver_security: Requested domain was for this machine.\n"));
return NT_STATUS_LOGON_FAILURE;
}
if (cli) {
} else {
- cli = server_cryptkey();
+ cli = server_cryptkey(mem_ctx);
locally_made_cli = True;
}
if (!cli || !cli->initialised) {
- DEBUG(1,("password server %s is not connected\n", cli->desthost));
+ DEBUG(1,("password server is not connected (cli not initilised)\n"));
return NT_STATUS_LOGON_FAILURE;
}
- if ((cli->sec_mode & 2) == 0) {
+ if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0) {
if (user_info->encrypted) {
DEBUG(1,("password server %s is plaintext, but we are encrypted. This just can't work :-(\n", cli->desthost));
return NT_STATUS_LOGON_FAILURE;
}
} else {
- if (memcmp(cli->secblob.data, auth_info->challenge.data, 8) != 0) {
+ if (memcmp(cli->secblob.data, 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->desthost));
return NT_STATUS_LOGON_FAILURE;
}
if(baduser[0] == 0) {
fstrcpy(baduser, INVALID_USER_PREFIX);
- fstrcat(baduser, global_myname);
+ fstrcat(baduser, global_myname());
}
/*
* need to detect this as some versions of NT4.x are broken. JRA.
*/
- /* I sure as hell hope that there arn't servers out there that take
+ /* 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 NT_STATUS_IS_OK(nt_status) {
struct passwd *pass = Get_Pwnam(user_info->internal_username.str);
if (pass) {
- if (!make_server_info_pw(server_info, pass)) {
- nt_status = NT_STATUS_NO_MEMORY;
- }
+ nt_status = make_server_info_pw(server_info, pass);
} else {
nt_status = NT_STATUS_NO_SUCH_USER;
}
if (locally_made_cli) {
cli_shutdown(cli);
- SAFE_FREE(cli);
}
return(nt_status);
}
-BOOL auth_init_smbserver(auth_methods **auth_method)
+NTSTATUS auth_init_smbserver(struct auth_context *auth_context, const char* param, auth_methods **auth_method)
{
- if (!make_auth_methods(auth_method)) {
- return False;
+ if (!make_auth_methods(auth_context, auth_method)) {
+ return NT_STATUS_NO_MEMORY;
}
+ (*auth_method)->name = "smbserver";
(*auth_method)->auth = check_smbserver_security;
(*auth_method)->get_chal = auth_get_challenge_server;
(*auth_method)->send_keepalive = send_server_keepalive;
(*auth_method)->free_private_data = free_server_private_data;
- return True;
+ return NT_STATUS_OK;
+}
+
+int auth_server_init(void)
+{
+ return smb_register_auth("smbserver", auth_init_smbserver, AUTH_INTERFACE_VERSION);
}
git.samba.org / nivanova / samba-autobuild / .git / blobdiff