Unix SMB/CIFS implementation.
Authentication utility functions
Copyright (C) Andrew Tridgell 1992-1998
- Copyright (C) Andrew Bartlett 2001
+ Copyright (C) Andrew Bartlett 2001-2011
Copyright (C) Jeremy Allison 2000-2001
Copyright (C) Rafal Szczesniak 2002
- Copyright (C) Volker Lendecke 2006
+ Copyright (C) Volker Lendecke 2006-2008
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
#include "../lib/util/util_pw.h"
#include "lib/winbind_util.h"
#include "passdb.h"
+#include "../librpc/gen_ndr/ndr_auth.h"
+#include "../auth/auth_sam_reply.h"
+#include "../librpc/gen_ndr/idmap.h"
+#include "lib/param/loadparm.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_AUTH
char *add_script;
int ret;
- add_script = talloc_strdup(ctx, lp_adduser_script());
+ add_script = lp_adduser_script(ctx);
if (!add_script || !*add_script) {
return -1;
}
const char *smb_name,
const char *client_domain,
const char *workstation_name,
- DATA_BLOB *lm_pwd,
- DATA_BLOB *nt_pwd,
+ const struct tsocket_address *remote_address,
+ const DATA_BLOB *lm_pwd,
+ const DATA_BLOB *nt_pwd,
const struct samr_Password *lm_interactive_pwd,
const struct samr_Password *nt_interactive_pwd,
const char *plaintext,
result = make_user_info(user_info, smb_name, internal_username,
client_domain, domain, workstation_name,
- lm_pwd, nt_pwd,
+ remote_address, lm_pwd, nt_pwd,
lm_interactive_pwd, nt_interactive_pwd,
plaintext, password_state);
if (NT_STATUS_IS_OK(result)) {
/* We have tried mapping */
- (*user_info)->mapped_state = True;
+ (*user_info)->mapped_state = true;
/* did we actually map the user to a different name? */
(*user_info)->was_mapped = was_mapped;
}
const char *smb_name,
const char *client_domain,
const char *workstation_name,
+ const struct tsocket_address *remote_address,
uint32 logon_parameters,
const uchar *lm_network_pwd,
int lm_pwd_len,
status = make_user_info_map(user_info,
smb_name, client_domain,
workstation_name,
+ remote_address,
lm_pwd_len ? &lm_blob : NULL,
nt_pwd_len ? &nt_blob : NULL,
NULL, NULL, NULL,
if (NT_STATUS_IS_OK(status)) {
(*user_info)->logon_parameters = logon_parameters;
}
- ret = NT_STATUS_IS_OK(status) ? True : False;
+ ret = NT_STATUS_IS_OK(status) ? true : false;
data_blob_free(&lm_blob);
data_blob_free(&nt_blob);
const char *smb_name,
const char *client_domain,
const char *workstation_name,
+ const struct tsocket_address *remote_address,
uint32 logon_parameters,
const uchar chal[8],
const uchar lm_interactive_pwd[16],
- const uchar nt_interactive_pwd[16],
- const uchar *dc_sess_key)
+ const uchar nt_interactive_pwd[16])
{
struct samr_Password lm_pwd;
struct samr_Password nt_pwd;
unsigned char local_lm_response[24];
unsigned char local_nt_response[24];
- unsigned char key[16];
-
- memcpy(key, dc_sess_key, 16);
if (lm_interactive_pwd)
memcpy(lm_pwd.hash, lm_interactive_pwd, sizeof(lm_pwd.hash));
if (nt_interactive_pwd)
memcpy(nt_pwd.hash, nt_interactive_pwd, sizeof(nt_pwd.hash));
-#ifdef DEBUG_PASSWORD
- DEBUG(100,("key:"));
- dump_data(100, key, sizeof(key));
-
- DEBUG(100,("lm owf password:"));
- dump_data(100, lm_pwd.hash, sizeof(lm_pwd.hash));
-
- DEBUG(100,("nt owf password:"));
- dump_data(100, nt_pwd.hash, sizeof(nt_pwd.hash));
-#endif
-
- if (lm_interactive_pwd)
- arcfour_crypt(lm_pwd.hash, key, sizeof(lm_pwd.hash));
-
- if (nt_interactive_pwd)
- arcfour_crypt(nt_pwd.hash, key, sizeof(nt_pwd.hash));
-
-#ifdef DEBUG_PASSWORD
- DEBUG(100,("decrypt of lm owf password:"));
- dump_data(100, lm_pwd.hash, sizeof(lm_pwd));
-
- DEBUG(100,("decrypt of nt owf password:"));
- dump_data(100, nt_pwd.hash, sizeof(nt_pwd));
-#endif
-
if (lm_interactive_pwd)
SMBOWFencrypt(lm_pwd.hash, chal,
local_lm_response);
SMBOWFencrypt(nt_pwd.hash, chal,
local_nt_response);
- /* Password info paranoia */
- ZERO_STRUCT(key);
-
{
bool ret;
NTSTATUS nt_status;
nt_status = make_user_info_map(
user_info,
smb_name, client_domain, workstation_name,
+ remote_address,
lm_interactive_pwd ? &local_lm_blob : NULL,
nt_interactive_pwd ? &local_nt_blob : NULL,
lm_interactive_pwd ? &lm_pwd : NULL,
(*user_info)->logon_parameters = logon_parameters;
}
- ret = NT_STATUS_IS_OK(nt_status) ? True : False;
+ ret = NT_STATUS_IS_OK(nt_status) ? true : false;
data_blob_free(&local_lm_blob);
data_blob_free(&local_nt_blob);
return ret;
bool make_user_info_for_reply(struct auth_usersupplied_info **user_info,
const char *smb_name,
const char *client_domain,
+ const struct tsocket_address *remote_address,
const uint8 chal[8],
DATA_BLOB plaintext_password)
{
(const char *)plaintext_password.data,
plaintext_password.length);
if (!plaintext_password_string) {
- return False;
+ return false;
}
- ret = make_user_info_map(
- user_info, smb_name, client_domain,
+ ret = make_user_info(
+ user_info, smb_name, smb_name, client_domain, client_domain,
get_remote_machine_name(),
+ remote_address,
local_lm_blob.data ? &local_lm_blob : NULL,
local_nt_blob.data ? &local_nt_blob : NULL,
NULL, NULL,
}
data_blob_free(&local_lm_blob);
- return NT_STATUS_IS_OK(ret) ? True : False;
+ return NT_STATUS_IS_OK(ret) ? true : false;
}
/****************************************************************************
NTSTATUS make_user_info_for_reply_enc(struct auth_usersupplied_info **user_info,
const char *smb_name,
- const char *client_domain,
+ const char *client_domain,
+ const struct tsocket_address *remote_address,
DATA_BLOB lm_resp, DATA_BLOB nt_resp)
{
- return make_user_info_map(user_info, smb_name,
- client_domain,
- get_remote_machine_name(),
- lm_resp.data && (lm_resp.length > 0) ? &lm_resp : NULL,
- nt_resp.data && (nt_resp.length > 0) ? &nt_resp : NULL,
- NULL, NULL, NULL,
- AUTH_PASSWORD_RESPONSE);
+ return make_user_info(user_info, smb_name, smb_name,
+ client_domain, client_domain,
+ get_remote_machine_name(),
+ remote_address,
+ lm_resp.data && (lm_resp.length > 0) ? &lm_resp : NULL,
+ nt_resp.data && (nt_resp.length > 0) ? &nt_resp : NULL,
+ NULL, NULL, NULL,
+ AUTH_PASSWORD_RESPONSE);
}
/****************************************************************************
- Create a guest user_info blob, for anonymous authenticaion.
+ Create a guest user_info blob, for anonymous authentication.
****************************************************************************/
-bool make_user_info_guest(struct auth_usersupplied_info **user_info)
+bool make_user_info_guest(const struct tsocket_address *remote_address,
+ struct auth_usersupplied_info **user_info)
{
NTSTATUS nt_status;
"","",
"","",
"",
+ remote_address,
NULL, NULL,
NULL, NULL,
NULL,
AUTH_PASSWORD_RESPONSE);
- return NT_STATUS_IS_OK(nt_status) ? True : False;
+ return NT_STATUS_IS_OK(nt_status) ? true : false;
}
static NTSTATUS log_nt_token(struct security_token *token)
char *group_sidstr;
size_t i;
- if ((lp_log_nt_token_command() == NULL) ||
- (strlen(lp_log_nt_token_command()) == 0)) {
+ if ((lp_log_nt_token_command(frame) == NULL) ||
+ (strlen(lp_log_nt_token_command(frame)) == 0)) {
TALLOC_FREE(frame);
return NT_STATUS_OK;
}
}
command = talloc_string_sub(
- frame, lp_log_nt_token_command(),
+ frame, lp_log_nt_token_command(frame),
"%s", sid_string_talloc(frame, &token->sids[0]));
command = talloc_string_sub(frame, command, "%t", group_sidstr);
NTSTATUS create_local_token(TALLOC_CTX *mem_ctx,
const struct auth_serversupplied_info *server_info,
DATA_BLOB *session_key,
- struct auth_serversupplied_info **session_info_out)
+ const char *smb_username, /* for ->sanitized_username, for %U subs */
+ struct auth_session_info **session_info_out)
{
struct security_token *t;
NTSTATUS status;
size_t i;
struct dom_sid tmp_sid;
- struct auth_serversupplied_info *session_info;
- struct wbcUnixId *ids;
+ struct auth_session_info *session_info;
+ struct unixid *ids;
+ fstring tmp;
/* Ensure we can't possible take a code path leading to a
* null defref. */
return NT_STATUS_LOGON_FAILURE;
}
- session_info = copy_serverinfo(mem_ctx, server_info);
-
+ session_info = talloc_zero(mem_ctx, struct auth_session_info);
if (!session_info) {
return NT_STATUS_NO_MEMORY;
}
+ session_info->unix_token = talloc_zero(session_info, struct security_unix_token);
+ if (!session_info->unix_token) {
+ TALLOC_FREE(session_info);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ session_info->unix_token->uid = server_info->utok.uid;
+ session_info->unix_token->gid = server_info->utok.gid;
+
+ session_info->unix_info = talloc_zero(session_info, struct auth_user_info_unix);
+ if (!session_info->unix_info) {
+ TALLOC_FREE(session_info);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ session_info->unix_info->unix_name = talloc_strdup(session_info, server_info->unix_name);
+ if (!session_info->unix_info->unix_name) {
+ TALLOC_FREE(session_info);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* This is a potentially untrusted username for use in %U */
+ alpha_strcpy(tmp, smb_username, ". _-$", sizeof(tmp));
+ session_info->unix_info->sanitized_username =
+ talloc_strdup(session_info->unix_info, tmp);
+
if (session_key) {
data_blob_free(&session_info->session_key);
session_info->session_key = data_blob_talloc(session_info,
if (!session_info->session_key.data && session_key->length) {
return NT_STATUS_NO_MEMORY;
}
+ } else {
+ session_info->session_key = data_blob_talloc( session_info, server_info->session_key.data,
+ server_info->session_key.length);
+ }
+
+ /* We need to populate session_info->info with the information found in server_info->info3 */
+ status = make_user_info_SamBaseInfo(session_info, "", &server_info->info3->base,
+ server_info->guest == false,
+ &session_info->info);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("conversion of info3 into auth_user_info failed!\n"));
+ TALLOC_FREE(session_info);
+ return status;
}
- if (session_info->security_token) {
+ if (server_info->security_token) {
/* Just copy the token, it has already been finalised
- * (nasty hack to support a cached guest session_info,
- * and a possible strategy for auth_samba4 to pass in
- * a finalised session) */
+ * (nasty hack to support a cached guest/system session_info
+ */
+
+ session_info->security_token = dup_nt_token(session_info, server_info->security_token);
+ if (!session_info->security_token) {
+ TALLOC_FREE(session_info);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ session_info->unix_token->ngroups = server_info->utok.ngroups;
+ if (server_info->utok.ngroups != 0) {
+ session_info->unix_token->groups = (gid_t *)talloc_memdup(
+ session_info->unix_token, server_info->utok.groups,
+ sizeof(gid_t)*session_info->unix_token->ngroups);
+ } else {
+ session_info->unix_token->groups = NULL;
+ }
+
*session_info_out = session_info;
return NT_STATUS_OK;
}
*/
if (((lp_server_role() == ROLE_DOMAIN_MEMBER) && !winbind_ping()) ||
- (session_info->nss_token)) {
+ (server_info->nss_token)) {
+ char *found_username = NULL;
status = create_token_from_username(session_info,
- session_info->unix_name,
- session_info->guest,
- &session_info->utok.uid,
- &session_info->utok.gid,
- &session_info->unix_name,
+ server_info->unix_name,
+ server_info->guest,
+ &session_info->unix_token->uid,
+ &session_info->unix_token->gid,
+ &found_username,
&session_info->security_token);
-
+ if (NT_STATUS_IS_OK(status)) {
+ session_info->unix_info->unix_name = found_username;
+ }
} else {
status = create_local_nt_token_from_info3(session_info,
- session_info->guest,
- session_info->info3,
- &session_info->extra,
+ server_info->guest,
+ server_info->info3,
+ &server_info->extra,
&session_info->security_token);
}
/* Convert the SIDs to gids. */
- session_info->utok.ngroups = 0;
- session_info->utok.groups = NULL;
+ session_info->unix_token->ngroups = 0;
+ session_info->unix_token->groups = NULL;
t = session_info->security_token;
- ids = talloc_array(talloc_tos(), struct wbcUnixId,
+ ids = talloc_array(talloc_tos(), struct unixid,
t->num_sids);
if (ids == NULL) {
return NT_STATUS_NO_MEMORY;
}
- if (!sids_to_unix_ids(t->sids, t->num_sids, ids)) {
+ if (!sids_to_unixids(t->sids, t->num_sids, ids)) {
TALLOC_FREE(ids);
return NT_STATUS_NO_MEMORY;
}
- /* Start at index 1, where the groups start. */
+ for (i=0; i<t->num_sids; i++) {
- for (i=1; i<t->num_sids; i++) {
+ if (i == 0 && ids[i].type != ID_TYPE_BOTH) {
+ continue;
+ }
- if (ids[i].type != WBC_ID_TYPE_GID) {
+ if (ids[i].type != ID_TYPE_GID &&
+ ids[i].type != ID_TYPE_BOTH) {
DEBUG(10, ("Could not convert SID %s to gid, "
"ignoring it\n",
sid_string_dbg(&t->sids[i])));
continue;
}
- if (!add_gid_to_array_unique(session_info, ids[i].id.gid,
- &session_info->utok.groups,
- &session_info->utok.ngroups)) {
+ if (!add_gid_to_array_unique(session_info, ids[i].id,
+ &session_info->unix_token->groups,
+ &session_info->unix_token->ngroups)) {
return NT_STATUS_NO_MEMORY;
}
}
* the nt token.
*/
- uid_to_unix_users_sid(session_info->utok.uid, &tmp_sid);
+ uid_to_unix_users_sid(session_info->unix_token->uid, &tmp_sid);
add_sid_to_array_unique(session_info->security_token, &tmp_sid,
&session_info->security_token->sids,
&session_info->security_token->num_sids);
- for ( i=0; i<session_info->utok.ngroups; i++ ) {
- gid_to_unix_groups_sid(session_info->utok.groups[i], &tmp_sid);
+ for ( i=0; i<session_info->unix_token->ngroups; i++ ) {
+ gid_to_unix_groups_sid(session_info->unix_token->groups[i], &tmp_sid);
add_sid_to_array_unique(session_info->security_token, &tmp_sid,
&session_info->security_token->sids,
&session_info->security_token->num_sids);
security_token_debug(DBGC_AUTH, 10, session_info->security_token);
debug_unix_user_token(DBGC_AUTH, 10,
- session_info->utok.uid,
- session_info->utok.gid,
- session_info->utok.ngroups,
- session_info->utok.groups);
+ session_info->unix_token->uid,
+ session_info->unix_token->gid,
+ session_info->unix_token->ngroups,
+ session_info->unix_token->groups);
status = log_nt_token(session_info->security_token);
if (!NT_STATUS_IS_OK(status)) {
}
result->unix_name = talloc_strdup(result, unix_username);
- result->sanitized_username = sanitize_username(result, unix_username);
- if ((result->unix_name == NULL)
- || (result->sanitized_username == NULL)) {
+ if (result->unix_name == NULL) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
return NT_STATUS_OK;
}
+static NTSTATUS get_system_info3(TALLOC_CTX *mem_ctx,
+ struct netr_SamInfo3 *info3)
+{
+ NTSTATUS status;
+ struct dom_sid *system_sid;
+
+ /* Set account name */
+ init_lsa_String(&info3->base.account_name, "SYSTEM");
+
+ /* Set domain name */
+ init_lsa_StringLarge(&info3->base.logon_domain, "NT AUTHORITY");
+
+
+ /* The SID set here will be overwirtten anyway, but try and make it SID_NT_SYSTEM anyway */
+ /* Domain sid is NT_AUTHORITY */
+
+ system_sid = dom_sid_parse_talloc(mem_ctx, SID_NT_SYSTEM);
+ if (system_sid == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ status = dom_sid_split_rid(mem_ctx, system_sid, &info3->base.domain_sid,
+ &info3->base.rid);
+ TALLOC_FREE(system_sid);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ /* Primary gid is the same */
+ info3->base.primary_gid = info3->base.rid;
+
+ return NT_STATUS_OK;
+}
+
static NTSTATUS get_guest_info3(TALLOC_CTX *mem_ctx,
struct netr_SamInfo3 *info3)
{
return NT_STATUS_NO_SUCH_USER;
}
- /* Set acount name */
+ /* Set account name */
tmp = talloc_strdup(mem_ctx, pwd->pw_name);
if (tmp == NULL) {
return NT_STATUS_NO_MEMORY;
if (tmp == NULL) {
return NT_STATUS_NO_MEMORY;
}
- init_lsa_StringLarge(&info3->base.domain, tmp);
+ init_lsa_StringLarge(&info3->base.logon_domain, tmp);
/* Domain sid */
sid_copy(&domain_sid, get_global_sam_sid());
info3->base.rid = DOMAIN_RID_GUEST;
/* Primary gid */
- info3->base.primary_gid = BUILTIN_RID_GUESTS;
+ info3->base.primary_gid = DOMAIN_RID_GUESTS;
+
+ /* Set as guest */
+ info3->base.user_flags = NETLOGON_GUEST;
TALLOC_FREE(pwd);
return NT_STATUS_OK;
The resulting structure is a 'session_info' because
create_local_token() has already been called on it. This is quite
- nasty, as the auth subsystem isn't expect this, but the behaviour is
+ nasty, as the auth subsystem isn't expect this, but the behavior is
left as-is for now.
***************************************************************************/
-static NTSTATUS make_new_server_info_guest(struct auth_serversupplied_info **session_info)
+static NTSTATUS make_new_session_info_guest(struct auth_session_info **session_info, struct auth_serversupplied_info **server_info)
{
- struct auth_serversupplied_info *server_info;
static const char zeros[16] = {0};
const char *guest_account = lp_guestaccount();
const char *domain = lp_netbios_name();
struct netr_SamInfo3 info3;
TALLOC_CTX *tmp_ctx;
NTSTATUS status;
- fstring tmp;
tmp_ctx = talloc_stackframe();
if (tmp_ctx == NULL) {
status = get_guest_info3(tmp_ctx, &info3);
if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("get_guest_info3 failed with %s\n",
+ nt_errstr(status)));
goto done;
}
status = make_server_info_info3(tmp_ctx,
guest_account,
domain,
- &server_info,
+ server_info,
&info3);
if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("make_server_info_info3 failed with %s\n",
+ nt_errstr(status)));
goto done;
}
- server_info->guest = True;
+ (*server_info)->guest = true;
/* This should not be done here (we should produce a server
* info, and later construct a session info from it), but for
- * now this does not change the previous behaviours */
- status = create_local_token(tmp_ctx, server_info, NULL, session_info);
- TALLOC_FREE(server_info);
+ * now this does not change the previous behavior */
+ status = create_local_token(tmp_ctx, *server_info, NULL,
+ (*server_info)->info3->base.account_name.string,
+ session_info);
if (!NT_STATUS_IS_OK(status)) {
- DEBUG(10, ("create_local_token failed: %s\n",
- nt_errstr(status)));
+ DEBUG(0, ("create_local_token failed: %s\n",
+ nt_errstr(status)));
goto done;
}
talloc_steal(NULL, *session_info);
+ talloc_steal(NULL, *server_info);
/* annoying, but the Guest really does have a session key, and it is
all zeros! */
(*session_info)->session_key = data_blob(zeros, sizeof(zeros));
- (*session_info)->lm_session_key = data_blob(zeros, sizeof(zeros));
-
- alpha_strcpy(tmp, (*session_info)->info3->base.account_name.string,
- ". _-$", sizeof(tmp));
- (*session_info)->sanitized_username = talloc_strdup(*session_info, tmp);
status = NT_STATUS_OK;
done:
***************************************************************************/
static NTSTATUS make_new_session_info_system(TALLOC_CTX *mem_ctx,
- struct auth_serversupplied_info **session_info)
+ struct auth_session_info **session_info)
{
- struct passwd *pwd;
NTSTATUS status;
+ struct auth_serversupplied_info *server_info;
+ TALLOC_CTX *tmp_ctx;
- pwd = getpwuid_alloc(mem_ctx, sec_initial_uid());
- if (pwd == NULL) {
- return NT_STATUS_NO_SUCH_USER;
+ tmp_ctx = talloc_stackframe();
+ if (tmp_ctx == NULL) {
+ return NT_STATUS_NO_MEMORY;
}
- status = make_session_info_from_username(mem_ctx,
- pwd->pw_name,
- false,
- session_info);
- TALLOC_FREE(pwd);
+ server_info = make_server_info(tmp_ctx);
+ if (!server_info) {
+ status = NT_STATUS_NO_MEMORY;
+ DEBUG(0, ("failed making server_info\n"));
+ goto done;
+ }
+
+ server_info->info3 = talloc_zero(server_info, struct netr_SamInfo3);
+ if (!server_info->info3) {
+ status = NT_STATUS_NO_MEMORY;
+ DEBUG(0, ("talloc failed setting info3\n"));
+ goto done;
+ }
+
+ status = get_system_info3(server_info, server_info->info3);
if (!NT_STATUS_IS_OK(status)) {
- return status;
+ DEBUG(0, ("Failed creating system info3 with %s\n",
+ nt_errstr(status)));
+ goto done;
+ }
+
+ server_info->utok.uid = sec_initial_uid();
+ server_info->utok.gid = sec_initial_gid();
+ server_info->unix_name = talloc_asprintf(server_info,
+ "NT AUTHORITY%cSYSTEM",
+ *lp_winbind_separator());
+
+ if (!server_info->unix_name) {
+ status = NT_STATUS_NO_MEMORY;
+ DEBUG(0, ("talloc_asprintf failed setting unix_name\n"));
+ goto done;
}
- (*session_info)->system = true;
+ server_info->security_token = talloc_zero(server_info, struct security_token);
+ if (!server_info->security_token) {
+ status = NT_STATUS_NO_MEMORY;
+ DEBUG(0, ("talloc failed setting security token\n"));
+ goto done;
+ }
- status = add_sid_to_array_unique((*session_info)->security_token->sids,
+ status = add_sid_to_array_unique(server_info->security_token->sids,
&global_sid_System,
- &(*session_info)->security_token->sids,
- &(*session_info)->security_token->num_sids);
+ &server_info->security_token->sids,
+ &server_info->security_token->num_sids);
if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE((*session_info));
- return status;
+ goto done;
}
- return NT_STATUS_OK;
+ /* SYSTEM has all privilages */
+ server_info->security_token->privilege_mask = ~0;
+
+ /* Now turn the server_info into a session_info with the full token etc */
+ status = create_local_token(mem_ctx, server_info, NULL, "SYSTEM", session_info);
+ talloc_free(server_info);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("create_local_token failed: %s\n",
+ nt_errstr(status)));
+ goto done;
+ }
+
+ talloc_steal(mem_ctx, *session_info);
+
+done:
+ TALLOC_FREE(tmp_ctx);
+ return status;
}
/****************************************************************************
- Fake a auth_serversupplied_info just from a username (as a
+ Fake a auth_session_info just from a username (as a
session_info structure, with create_local_token() already called on
it.
****************************************************************************/
NTSTATUS make_session_info_from_username(TALLOC_CTX *mem_ctx,
const char *username,
bool is_guest,
- struct auth_serversupplied_info **session_info)
+ struct auth_session_info **session_info)
{
- struct auth_serversupplied_info *result;
struct passwd *pwd;
NTSTATUS status;
+ struct auth_serversupplied_info *result;
pwd = Get_Pwnam_alloc(talloc_tos(), username);
if (pwd == NULL) {
status = make_server_info_pw(&result, pwd->pw_name, pwd);
- TALLOC_FREE(pwd);
-
if (!NT_STATUS_IS_OK(status)) {
return status;
}
result->guest = is_guest;
/* Now turn the server_info into a session_info with the full token etc */
- status = create_local_token(mem_ctx, result, NULL, session_info);
- talloc_free(result);
+ status = create_local_token(mem_ctx, result, NULL, pwd->pw_name, session_info);
+ TALLOC_FREE(result);
+ TALLOC_FREE(pwd);
+
return status;
}
-
-struct auth_serversupplied_info *copy_serverinfo(TALLOC_CTX *mem_ctx,
- const struct auth_serversupplied_info *src)
+/* This function MUST only used to create the cached server_info for
+ * guest.
+ *
+ * This is a lossy conversion. Variables known to be lost so far
+ * include:
+ *
+ * - nss_token (not needed because the only read doesn't happen
+ * for the GUEST user, as this routine populates ->security_token
+ *
+ * - extra (not needed because the guest account must have valid RIDs per the output of get_guest_info3())
+ *
+ * - The 'server_info' parameter allows the missing 'info3' to be copied across.
+ */
+static struct auth_serversupplied_info *copy_session_info_serverinfo_guest(TALLOC_CTX *mem_ctx,
+ const struct auth_session_info *src,
+ struct auth_serversupplied_info *server_info)
{
struct auth_serversupplied_info *dst;
return NULL;
}
- dst->guest = src->guest;
- dst->system = src->system;
- dst->utok.uid = src->utok.uid;
- dst->utok.gid = src->utok.gid;
- dst->utok.ngroups = src->utok.ngroups;
- if (src->utok.ngroups != 0) {
+ /* This element must be provided to convert back to an auth_serversupplied_info */
+ SMB_ASSERT(src->unix_info);
+
+ dst->guest = true;
+ dst->system = false;
+
+ /* This element must be provided to convert back to an
+ * auth_serversupplied_info. This needs to be from the
+ * auth_session_info because the group values in particular
+ * may change during create_local_token() processing */
+ SMB_ASSERT(src->unix_token);
+ dst->utok.uid = src->unix_token->uid;
+ dst->utok.gid = src->unix_token->gid;
+ dst->utok.ngroups = src->unix_token->ngroups;
+ if (src->unix_token->ngroups != 0) {
dst->utok.groups = (gid_t *)talloc_memdup(
- dst, src->utok.groups,
+ dst, src->unix_token->groups,
sizeof(gid_t)*dst->utok.ngroups);
} else {
dst->utok.groups = NULL;
}
- if (src->security_token) {
- dst->security_token = dup_nt_token(dst, src->security_token);
- if (!dst->security_token) {
- TALLOC_FREE(dst);
- return NULL;
- }
+ /* We must have a security_token as otherwise the lossy
+ * conversion without nss_token would cause create_local_token
+ * to take the wrong path */
+ SMB_ASSERT(src->security_token);
+
+ dst->security_token = dup_nt_token(dst, src->security_token);
+ if (!dst->security_token) {
+ TALLOC_FREE(dst);
+ return NULL;
}
dst->session_key = data_blob_talloc( dst, src->session_key.data,
src->session_key.length);
- dst->lm_session_key = data_blob_talloc(dst, src->lm_session_key.data,
- src->lm_session_key.length);
+ /* This is OK because this functions is only used for the
+ * GUEST account, which has all-zero keys for both values */
+ dst->lm_session_key = data_blob_talloc(dst, src->session_key.data,
+ src->session_key.length);
- dst->info3 = copy_netr_SamInfo3(dst, src->info3);
+ dst->info3 = copy_netr_SamInfo3(dst, server_info->info3);
if (!dst->info3) {
TALLOC_FREE(dst);
return NULL;
}
- dst->extra = src->extra;
- dst->unix_name = talloc_strdup(dst, src->unix_name);
+ dst->unix_name = talloc_strdup(dst, src->unix_info->unix_name);
if (!dst->unix_name) {
TALLOC_FREE(dst);
return NULL;
}
- dst->sanitized_username = talloc_strdup(dst, src->sanitized_username);
- if (!dst->sanitized_username) {
+ return dst;
+}
+
+struct auth_session_info *copy_session_info(TALLOC_CTX *mem_ctx,
+ const struct auth_session_info *src)
+{
+ struct auth_session_info *dst;
+ DATA_BLOB blob;
+ enum ndr_err_code ndr_err;
+
+ ndr_err = ndr_push_struct_blob(
+ &blob, talloc_tos(), src,
+ (ndr_push_flags_fn_t)ndr_push_auth_session_info);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ DEBUG(0, ("copy_session_info(): ndr_push_auth_session_info failed: "
+ "%s\n", ndr_errstr(ndr_err)));
+ return NULL;
+ }
+
+ dst = talloc(mem_ctx, struct auth_session_info);
+ if (dst == NULL) {
+ DEBUG(0, ("talloc failed\n"));
+ TALLOC_FREE(blob.data);
+ return NULL;
+ }
+
+ ndr_err = ndr_pull_struct_blob(
+ &blob, dst, dst,
+ (ndr_pull_flags_fn_t)ndr_pull_auth_session_info);
+ TALLOC_FREE(blob.data);
+
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ DEBUG(0, ("copy_session_info(): ndr_pull_auth_session_info failed: "
+ "%s\n", ndr_errstr(ndr_err)));
TALLOC_FREE(dst);
return NULL;
}
* SMB level session key with SystemLibraryDTC
*/
-bool session_info_set_session_key(struct auth_serversupplied_info *info,
+bool session_info_set_session_key(struct auth_session_info *info,
DATA_BLOB session_key)
{
TALLOC_FREE(info->session_key.data);
return (info->session_key.data != NULL);
}
-static struct auth_serversupplied_info *guest_info = NULL;
+static struct auth_session_info *guest_info = NULL;
+
+static struct auth_serversupplied_info *guest_server_info = NULL;
bool init_guest_info(void)
{
if (guest_info != NULL)
- return True;
+ return true;
- return NT_STATUS_IS_OK(make_new_server_info_guest(&guest_info));
+ return NT_STATUS_IS_OK(make_new_session_info_guest(&guest_info, &guest_server_info));
}
NTSTATUS make_server_info_guest(TALLOC_CTX *mem_ctx,
struct auth_serversupplied_info **server_info)
{
- *server_info = copy_serverinfo(mem_ctx, guest_info);
+ /* This is trickier than it would appear to need to be because
+ * we are trying to avoid certain costly operations when the
+ * structure is converted to a 'auth_session_info' again in
+ * create_local_token() */
+ *server_info = copy_session_info_serverinfo_guest(mem_ctx, guest_info, guest_server_info);
return (*server_info != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
}
-static struct auth_serversupplied_info *system_info = NULL;
+NTSTATUS make_session_info_guest(TALLOC_CTX *mem_ctx,
+ struct auth_session_info **session_info)
+{
+ *session_info = copy_session_info(mem_ctx, guest_info);
+ return (*session_info != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
+}
+
+static struct auth_session_info *system_info = NULL;
-NTSTATUS init_system_info(void)
+NTSTATUS init_system_session_info(void)
{
if (system_info != NULL)
return NT_STATUS_OK;
}
NTSTATUS make_session_info_system(TALLOC_CTX *mem_ctx,
- struct auth_serversupplied_info **session_info)
+ struct auth_session_info **session_info)
{
if (system_info == NULL) return NT_STATUS_UNSUCCESSFUL;
- *session_info = copy_serverinfo(mem_ctx, system_info);
+ *session_info = copy_session_info(mem_ctx, system_info);
return (*session_info != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
}
-const struct auth_serversupplied_info *get_session_info_system(void)
+const struct auth_session_info *get_session_info_system(void)
{
return system_info;
}
-bool copy_current_user(struct current_user *dst, struct current_user *src)
-{
- gid_t *groups;
- struct security_token *nt_token;
-
- groups = (gid_t *)memdup(src->ut.groups,
- sizeof(gid_t) * src->ut.ngroups);
- if ((src->ut.ngroups != 0) && (groups == NULL)) {
- return False;
- }
-
- nt_token = dup_nt_token(NULL, src->nt_user_token);
- if (nt_token == NULL) {
- SAFE_FREE(groups);
- return False;
- }
-
- dst->conn = src->conn;
- dst->vuid = src->vuid;
- dst->ut.uid = src->ut.uid;
- dst->ut.gid = src->ut.gid;
- dst->ut.ngroups = src->ut.ngroups;
- dst->ut.groups = groups;
- dst->nt_user_token = nt_token;
- return True;
-}
-
/***************************************************************************
Purely internal function for make_server_info_info3
***************************************************************************/
if (!lower_username) {
return NT_STATUS_NO_MEMORY;
}
- strlower_m( lower_username );
+ if (!strlower_m( lower_username )) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
orig_dom_user = talloc_asprintf(mem_ctx,
"%s%c%s",
return NT_STATUS_NO_MEMORY;
}
- passwd = smb_getpwnam(mem_ctx, dom_user, &real_username, True );
+ passwd = smb_getpwnam(mem_ctx, dom_user, &real_username, true );
if (!passwd) {
DEBUG(3, ("Failed to find authenticated user %s via "
"getpwnam(), denying access.\n", dom_user));
*pwd = passwd;
- /* This is pointless -- there is no suport for differing
+ /* This is pointless -- there is no support for differing
unix and windows names. Make sure to always store the
one we actually looked up and succeeded. Have I mentioned
why I hate the 'winbind use default domain' parameter?
/* make sure we get the case of the username correct */
/* work around 'winbind use default domain = yes' */
- if ( !strchr_m( pw->pw_name, *lp_winbind_separator() ) ) {
+ if ( lp_winbind_use_default_domain() &&
+ !strchr_m( pw->pw_name, *lp_winbind_separator() ) ) {
char *domain;
/* split the domain and username into 2 strings */
char *found_username = NULL;
const char *nt_domain;
const char *nt_username;
+ struct dom_sid user_sid;
+ struct dom_sid group_sid;
bool username_was_mapped;
struct passwd *pwd;
struct auth_serversupplied_info *result;
- struct dom_sid *group_sid;
- struct netr_SamInfo3 *i3;
/*
Here is where we should check the list of
matches.
*/
+ if (!sid_compose(&user_sid, info3->base.domain_sid, info3->base.rid)) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (!sid_compose(&group_sid, info3->base.domain_sid,
+ info3->base.primary_gid)) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
nt_username = talloc_strdup(mem_ctx, info3->base.account_name.string);
if (!nt_username) {
/* If the server didn't give us one, just use the one we sent
nt_username = sent_nt_username;
}
- nt_domain = talloc_strdup(mem_ctx, info3->base.domain.string);
+ nt_domain = talloc_strdup(mem_ctx, info3->base.logon_domain.string);
if (!nt_domain) {
/* If the server didn't give us one, just use the one we sent
* them */
result->unix_name = talloc_strdup(result, found_username);
- result->sanitized_username = sanitize_username(result,
- result->unix_name);
- if (result->sanitized_username == NULL) {
- TALLOC_FREE(result);
- return NT_STATUS_NO_MEMORY;
- }
-
/* copy in the info3 */
- result->info3 = i3 = copy_netr_SamInfo3(result, info3);
+ result->info3 = copy_netr_SamInfo3(result, info3);
if (result->info3 == NULL) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
/* Fill in the unix info we found on the way */
+
result->utok.uid = pwd->pw_uid;
result->utok.gid = pwd->pw_gid;
- /* We can't just trust that the primary group sid sent us is something
- * we can really use. Obtain the useable sid, and store the original
- * one as an additional group if it had to be replaced */
- nt_status = get_primary_group_sid(mem_ctx, found_username,
- &pwd, &group_sid);
- if (!NT_STATUS_IS_OK(nt_status)) {
- TALLOC_FREE(result);
- return nt_status;
- }
-
- /* store and check if it is the same we got originally */
- sid_peek_rid(group_sid, &i3->base.primary_gid);
- if (i3->base.primary_gid != info3->base.primary_gid) {
- uint32_t n = i3->base.groups.count;
- /* not the same, store the original as an additional group */
- i3->base.groups.rids =
- talloc_realloc(i3, i3->base.groups.rids,
- struct samr_RidWithAttribute, n + 1);
- if (i3->base.groups.rids == NULL) {
- TALLOC_FREE(result);
- return NT_STATUS_NO_MEMORY;
- }
- i3->base.groups.rids[n].rid = info3->base.primary_gid;
- i3->base.groups.rids[n].attributes = SE_GROUP_ENABLED;
- i3->base.groups.count = n + 1;
- }
-
/* ensure we are never given NULL session keys */
if (memcmp(info3->base.key.key, zeros, sizeof(zeros)) == 0) {
result->nss_token |= username_was_mapped;
+ result->guest = (info3->base.user_flags & NETLOGON_GUEST);
+
*server_info = result;
return NT_STATUS_OK;
/* no trusted domains for a standalone server */
if ( lp_server_role() == ROLE_STANDALONE )
- return False;
+ return false;
if (dom_name == NULL || dom_name[0] == '\0') {
return false;
ret = pdb_get_trusteddom_pw(dom_name, NULL, NULL, NULL);
unbecome_root();
if (ret)
- return True;
+ return true;
}
else {
wbcErr result;
result = wb_is_trusted_domain(dom_name);
if (result == WBC_ERR_SUCCESS) {
- return True;
+ return true;
}
if (result == WBC_ERR_DOMAIN_NOT_FOUND) {
/* winbind could not find the domain */
- return False;
+ return false;
}
/* The only other possible result is that winbind is not up
* domains (like a domain member would use */
if ( trustdom_cache_fetch(dom_name, &trustdom_sid) ) {
- return True;
+ return true;
+ }
+
+ return false;
+}
+
+
+
+/*
+ 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)
+{
+ user = user ? user : "";
+ domain = domain ? domain : "";
+
+ if (NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER)) {
+ if ((lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_USER) ||
+ (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);
+ }
+ } 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 False;
+ return status;
}
+/*
+ Extract session key from a session info and return it in a blob
+ if intent is KEY_USE_16BYTES, truncate it to 16 bytes
+
+ See sections 3.2.4.15 and 3.3.4.2 of MS-SMB
+ Also see https://lists.samba.org/archive/cifs-protocol/2012-January/002265.html for details
+
+ Note that returned session_key is referencing the original key, it is supposed to be
+ short-lived. If original session_info->session_key is gone, the reference will be broken.
+*/
+NTSTATUS session_extract_session_key(const struct auth_session_info *session_info, DATA_BLOB *session_key, enum session_key_use_intent intent)
+{
+
+ if (session_key == NULL || session_info == NULL) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (session_info->session_key.length == 0) {
+ return NT_STATUS_NO_USER_SESSION_KEY;
+ }
+
+ *session_key = session_info->session_key;
+ if (intent == KEY_USE_16BYTES) {
+ session_key->length = MIN(session_info->session_key.length, 16);
+ }
+ return NT_STATUS_OK;
+}
git.samba.org / kai / samba.git / blobdiff