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 "includes.h"
-#include "smbd/globals.h"
+#include "auth.h"
#include "../libcli/auth/libcli_auth.h"
#include "../lib/crypto/arcfour.h"
+#include "rpc_client/init_lsa.h"
+#include "../libcli/security/security.h"
+#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"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_AUTH
-/****************************************************************************
- Ensure primary group SID is always at position 0 in a
- auth_serversupplied_info struct.
-****************************************************************************/
-
-static void sort_sid_array_for_smbd(struct auth_serversupplied_info *result,
- const struct dom_sid *pgroup_sid)
-{
- unsigned int i;
-
- if (!result->sids) {
- return;
- }
-
- if (sid_compare(&result->sids[0], pgroup_sid)==0) {
- return;
- }
-
- for (i = 1; i < result->num_sids; i++) {
- if (sid_compare(pgroup_sid,
- &result->sids[i]) == 0) {
- sid_copy(&result->sids[i], &result->sids[0]);
- sid_copy(&result->sids[0], pgroup_sid);
- return;
- }
- }
-}
-
/****************************************************************************
Create a UNIX user on demand.
****************************************************************************/
const char *smb_name,
const char *client_domain,
const char *workstation_name,
+ const struct tsocket_address *remote_address,
DATA_BLOB *lm_pwd,
DATA_BLOB *nt_pwd,
- DATA_BLOB *lm_interactive_pwd,
- DATA_BLOB *nt_interactive_pwd,
- DATA_BLOB *plaintext,
- bool encrypted)
+ const struct samr_Password *lm_interactive_pwd,
+ const struct samr_Password *nt_interactive_pwd,
+ const char *plaintext,
+ enum auth_password_state password_state)
{
const char *domain;
NTSTATUS result;
bool was_mapped;
- fstring internal_username;
- fstrcpy(internal_username, smb_name);
- was_mapped = map_username(internal_username);
+ char *internal_username = NULL;
+
+ was_mapped = map_username(talloc_tos(), smb_name, &internal_username);
+ if (!internal_username) {
+ return NT_STATUS_NO_MEMORY;
+ }
DEBUG(5, ("Mapping user [%s]\\[%s] from workstation [%s]\n",
client_domain, smb_name, workstation_name));
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, encrypted);
+ plaintext, password_state);
if (NT_STATUS_IS_OK(result)) {
+ /* We have tried mapping */
+ (*user_info)->mapped_state = True;
+ /* did we actually map the user to a different name? */
(*user_info)->was_mapped = was_mapped;
}
return result;
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,
- True);
+ AUTH_PASSWORD_RESPONSE);
if (NT_STATUS_IS_OK(status)) {
(*user_info)->logon_parameters = logon_parameters;
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)
{
- unsigned char lm_pwd[16];
- unsigned char nt_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, lm_interactive_pwd, sizeof(lm_pwd));
+ memcpy(lm_pwd.hash, lm_interactive_pwd, sizeof(lm_pwd.hash));
if (nt_interactive_pwd)
- memcpy(nt_pwd, nt_interactive_pwd, sizeof(nt_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, sizeof(lm_pwd));
+ dump_data(100, lm_pwd.hash, sizeof(lm_pwd.hash));
DEBUG(100,("nt owf password:"));
- dump_data(100, nt_pwd, sizeof(nt_pwd));
+ dump_data(100, nt_pwd.hash, sizeof(nt_pwd.hash));
#endif
if (lm_interactive_pwd)
- arcfour_crypt(lm_pwd, key, sizeof(lm_pwd));
+ arcfour_crypt(lm_pwd.hash, key, sizeof(lm_pwd.hash));
if (nt_interactive_pwd)
- arcfour_crypt(nt_pwd, key, sizeof(nt_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, sizeof(lm_pwd));
+ dump_data(100, lm_pwd.hash, sizeof(lm_pwd));
DEBUG(100,("decrypt of nt owf password:"));
- dump_data(100, nt_pwd, sizeof(nt_pwd));
+ dump_data(100, nt_pwd.hash, sizeof(nt_pwd));
#endif
if (lm_interactive_pwd)
- SMBOWFencrypt(lm_pwd, chal,
+ SMBOWFencrypt(lm_pwd.hash, chal,
local_lm_response);
if (nt_interactive_pwd)
- SMBOWFencrypt(nt_pwd, chal,
+ SMBOWFencrypt(nt_pwd.hash, chal,
local_nt_response);
/* Password info paranoia */
DATA_BLOB local_lm_blob;
DATA_BLOB local_nt_blob;
- DATA_BLOB lm_interactive_blob;
- DATA_BLOB nt_interactive_blob;
-
if (lm_interactive_pwd) {
local_lm_blob = data_blob(local_lm_response,
sizeof(local_lm_response));
- lm_interactive_blob = data_blob(lm_pwd,
- sizeof(lm_pwd));
- ZERO_STRUCT(lm_pwd);
}
if (nt_interactive_pwd) {
local_nt_blob = data_blob(local_nt_response,
sizeof(local_nt_response));
- nt_interactive_blob = data_blob(nt_pwd,
- sizeof(nt_pwd));
- ZERO_STRUCT(nt_pwd);
}
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_interactive_blob : NULL,
- nt_interactive_pwd ? &nt_interactive_blob : NULL,
- NULL, True);
+ lm_interactive_pwd ? &lm_pwd : NULL,
+ nt_interactive_pwd ? &nt_pwd : NULL,
+ NULL, AUTH_PASSWORD_HASH);
if (NT_STATUS_IS_OK(nt_status)) {
(*user_info)->logon_parameters = logon_parameters;
ret = NT_STATUS_IS_OK(nt_status) ? True : False;
data_blob_free(&local_lm_blob);
data_blob_free(&local_nt_blob);
- data_blob_free(&lm_interactive_blob);
- data_blob_free(&nt_interactive_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)
{
DATA_BLOB local_lm_blob;
DATA_BLOB local_nt_blob;
NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
-
+ char *plaintext_password_string;
/*
* Not encrypted - do so.
*/
DEBUG(5,("make_user_info_for_reply: User passwords not in encrypted "
"format.\n"));
-
if (plaintext_password.data && plaintext_password.length) {
unsigned char local_lm_response[24];
local_nt_blob = data_blob_null;
}
+ plaintext_password_string = talloc_strndup(talloc_tos(),
+ (const char *)plaintext_password.data,
+ plaintext_password.length);
+ if (!plaintext_password_string) {
+ return False;
+ }
+
ret = make_user_info_map(
user_info, smb_name, 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,
- plaintext_password.data && plaintext_password.length ? &plaintext_password : NULL,
- False);
+ plaintext_password_string,
+ AUTH_PASSWORD_PLAIN);
+
+ if (plaintext_password_string) {
+ memset(plaintext_password_string, '\0', strlen(plaintext_password_string));
+ talloc_free(plaintext_password_string);
+ }
data_blob_free(&local_lm_blob);
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 : NULL,
- nt_resp.data ? &nt_resp : NULL,
+ 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,
- True);
+ 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,
- True);
+ AUTH_PASSWORD_RESPONSE);
return NT_STATUS_IS_OK(nt_status) ? True : False;
}
-static NTSTATUS log_nt_token(NT_USER_TOKEN *token)
+static NTSTATUS log_nt_token(struct security_token *token)
{
TALLOC_CTX *frame = talloc_stackframe();
char *command;
for (i=1; i<token->num_sids; i++) {
group_sidstr = talloc_asprintf(
frame, "%s %s", group_sidstr,
- sid_string_talloc(frame, &token->user_sids[i]));
+ sid_string_talloc(frame, &token->sids[i]));
}
command = talloc_string_sub(
frame, lp_log_nt_token_command(),
- "%s", sid_string_talloc(frame, &token->user_sids[0]));
+ "%s", sid_string_talloc(frame, &token->sids[0]));
command = talloc_string_sub(frame, command, "%t", group_sidstr);
if (command == NULL) {
* server_info->sids (the info3/sam groups). Find the unix gids.
*/
-NTSTATUS create_local_token(struct auth_serversupplied_info *server_info)
+NTSTATUS create_local_token(TALLOC_CTX *mem_ctx,
+ const struct auth_serversupplied_info *server_info,
+ DATA_BLOB *session_key,
+ struct auth_session_info **session_info_out)
{
+ struct security_token *t;
NTSTATUS status;
size_t i;
struct dom_sid tmp_sid;
+ struct auth_session_info *session_info;
+ struct wbcUnixId *ids;
+
+ /* Ensure we can't possible take a code path leading to a
+ * null defref. */
+ if (!server_info) {
+ return NT_STATUS_LOGON_FAILURE;
+ }
+
+ 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;
+ }
+
+ session_info->unix_info->sanitized_username = talloc_strdup(session_info, server_info->sanitized_username);
+ if (!session_info->unix_info->sanitized_username) {
+ TALLOC_FREE(session_info);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ session_info->unix_info->system = server_info->system;
+
+ if (session_key) {
+ data_blob_free(&session_info->session_key);
+ session_info->session_key = data_blob_talloc(session_info,
+ session_key->data,
+ session_key->length);
+ 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);
+ }
+
+ if (session_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) */
+
+ 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;
+ }
+
+ /* 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 winbind is not around, we can not make much use of the SIDs the
if (((lp_server_role() == ROLE_DOMAIN_MEMBER) && !winbind_ping()) ||
(server_info->nss_token)) {
- status = create_token_from_username(server_info,
+ status = create_token_from_username(session_info,
server_info->unix_name,
server_info->guest,
- &server_info->utok.uid,
- &server_info->utok.gid,
- &server_info->unix_name,
- &server_info->ptok);
+ &session_info->unix_token->uid,
+ &session_info->unix_token->gid,
+ &session_info->unix_info->unix_name,
+ &session_info->security_token);
} else {
- status = create_local_nt_token_from_info3(server_info,
+ status = create_local_nt_token_from_info3(session_info,
server_info->guest,
server_info->info3,
&server_info->extra,
- &server_info->ptok);
+ &session_info->security_token);
}
if (!NT_STATUS_IS_OK(status)) {
/* Convert the SIDs to gids. */
- server_info->utok.ngroups = 0;
- server_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,
+ t->num_sids);
+ if (ids == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (!sids_to_unix_ids(t->sids, t->num_sids, ids)) {
+ TALLOC_FREE(ids);
+ return NT_STATUS_NO_MEMORY;
+ }
/* Start at index 1, where the groups start. */
- for (i=1; i<server_info->ptok->num_sids; i++) {
- gid_t gid;
- struct dom_sid *sid = &server_info->ptok->user_sids[i];
+ for (i=1; i<t->num_sids; i++) {
- if (!sid_to_gid(sid, &gid)) {
+ if (ids[i].type != WBC_ID_TYPE_GID) {
DEBUG(10, ("Could not convert SID %s to gid, "
- "ignoring it\n", sid_string_dbg(sid)));
+ "ignoring it\n",
+ sid_string_dbg(&t->sids[i])));
continue;
}
- add_gid_to_array_unique(server_info, gid,
- &server_info->utok.groups,
- &server_info->utok.ngroups);
+ if (!add_gid_to_array_unique(session_info, ids[i].id.gid,
+ &session_info->unix_token->groups,
+ &session_info->unix_token->ngroups)) {
+ return NT_STATUS_NO_MEMORY;
+ }
}
/*
* the nt token.
*/
- if (!uid_to_unix_users_sid(server_info->utok.uid, &tmp_sid)) {
- DEBUG(1,("create_local_token: Failed to create SID "
- "for uid %u!\n", (unsigned int)server_info->utok.uid));
- }
- add_sid_to_array_unique(server_info->ptok, &tmp_sid,
- &server_info->ptok->user_sids,
- &server_info->ptok->num_sids);
+ uid_to_unix_users_sid(session_info->unix_token->uid, &tmp_sid);
- for ( i=0; i<server_info->utok.ngroups; i++ ) {
- if (!gid_to_unix_groups_sid( server_info->utok.groups[i], &tmp_sid ) ) {
- DEBUG(1,("create_local_token: Failed to create SID "
- "for gid %u!\n", (unsigned int)server_info->utok.groups[i]));
- continue;
- }
- add_sid_to_array_unique(server_info->ptok, &tmp_sid,
- &server_info->ptok->user_sids,
- &server_info->ptok->num_sids);
+ 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->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);
}
- debug_nt_user_token(DBGC_AUTH, 10, server_info->ptok);
+ security_token_debug(DBGC_AUTH, 10, session_info->security_token);
debug_unix_user_token(DBGC_AUTH, 10,
- server_info->utok.uid,
- server_info->utok.gid,
- server_info->utok.ngroups,
- server_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(server_info->ptok);
- return status;
+ status = log_nt_token(session_info->security_token);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ *session_info_out = session_info;
+ return NT_STATUS_OK;
}
/***************************************************************************
{
NTSTATUS status;
struct samu *sampass = NULL;
- gid_t *gids;
char *qualified_name = NULL;
TALLOC_CTX *mem_ctx = NULL;
struct dom_sid u_sid;
return NT_STATUS_NO_MEMORY;
}
- status = samu_to_SamInfo3(result, sampass, global_myname(),
+ status = samu_to_SamInfo3(result, sampass, lp_netbios_name(),
&result->info3, &result->extra);
+ TALLOC_FREE(sampass);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("Failed to convert samu to info3: %s\n",
nt_errstr(status)));
- TALLOC_FREE(sampass);
TALLOC_FREE(result);
return 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)) {
- TALLOC_FREE(sampass);
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
result->utok.uid = pwd->pw_uid;
result->utok.gid = pwd->pw_gid;
- status = pdb_enum_group_memberships(result, sampass,
- &result->sids, &gids,
- &result->num_sids);
+ *server_info = result;
+
+ return NT_STATUS_OK;
+}
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(10, ("pdb_enum_group_memberships failed: %s\n",
- nt_errstr(status)));
- TALLOC_FREE(sampass);
- TALLOC_FREE(result);
- return status;
+static NTSTATUS get_guest_info3(TALLOC_CTX *mem_ctx,
+ struct netr_SamInfo3 *info3)
+{
+ const char *guest_account = lp_guestaccount();
+ struct dom_sid domain_sid;
+ struct passwd *pwd;
+ const char *tmp;
+
+ pwd = Get_Pwnam_alloc(mem_ctx, guest_account);
+ if (pwd == NULL) {
+ DEBUG(0,("SamInfo3_for_guest: Unable to locate guest "
+ "account [%s]!\n", guest_account));
+ return NT_STATUS_NO_SUCH_USER;
}
- TALLOC_FREE(sampass);
+ /* Set account name */
+ tmp = talloc_strdup(mem_ctx, pwd->pw_name);
+ if (tmp == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ init_lsa_String(&info3->base.account_name, tmp);
- /* FIXME: add to info3 too ? */
- status = add_sid_to_array_unique(result, &u_sid,
- &result->sids,
- &result->num_sids);
- if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(result);
- return status;
+ /* Set domain name */
+ tmp = talloc_strdup(mem_ctx, get_global_sam_name());
+ if (tmp == NULL) {
+ return NT_STATUS_NO_MEMORY;
}
+ init_lsa_StringLarge(&info3->base.domain, tmp);
- /* For now we throw away the gids and convert via sid_to_gid
- * later. This needs fixing, but I'd like to get the code straight and
- * simple first. */
- TALLOC_FREE(gids);
+ /* Domain sid */
+ sid_copy(&domain_sid, get_global_sam_sid());
- *server_info = result;
+ info3->base.domain_sid = dom_sid_dup(mem_ctx, &domain_sid);
+ if (info3->base.domain_sid == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* Guest rid */
+ info3->base.rid = DOMAIN_RID_GUEST;
+
+ /* Primary gid */
+ info3->base.primary_gid = BUILTIN_RID_GUESTS;
+
+ /* Set as guest */
+ info3->base.user_flags = NETLOGON_GUEST;
+ TALLOC_FREE(pwd);
return NT_STATUS_OK;
}
Make (and fill) a user_info struct for a guest login.
This *must* succeed for smbd to start. If there is no mapping entry for
the guest gid, then create one.
+
+ 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 behavior is
+ left as-is for now.
***************************************************************************/
-static NTSTATUS make_new_server_info_guest(struct auth_serversupplied_info **server_info)
+static NTSTATUS make_new_session_info_guest(struct auth_session_info **session_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;
- struct samu *sampass = NULL;
- struct dom_sid guest_sid;
- bool ret;
- static const char zeros[16] = {0, };
fstring tmp;
- if ( !(sampass = samu_new( NULL )) ) {
+ tmp_ctx = talloc_stackframe();
+ if (tmp_ctx == NULL) {
return NT_STATUS_NO_MEMORY;
}
- sid_compose(&guest_sid, get_global_sam_sid(), DOMAIN_RID_GUEST);
-
- become_root();
- ret = pdb_getsampwsid(sampass, &guest_sid);
- unbecome_root();
+ ZERO_STRUCT(info3);
- if (!ret) {
- TALLOC_FREE(sampass);
- return NT_STATUS_NO_SUCH_USER;
+ 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_sam(server_info, sampass);
+ status = make_server_info_info3(tmp_ctx,
+ guest_account,
+ domain,
+ server_info,
+ &info3);
if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(sampass);
- return status;
+ DEBUG(0, ("make_server_info_info3 failed with %s\n",
+ nt_errstr(status)));
+ goto done;
}
- TALLOC_FREE(sampass);
-
(*server_info)->guest = True;
- status = create_local_token(*server_info);
+ /* 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 behavior */
+ status = create_local_token(tmp_ctx, *server_info, NULL, session_info);
if (!NT_STATUS_IS_OK(status)) {
- DEBUG(10, ("create_local_token failed: %s\n",
- nt_errstr(status)));
- return 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! */
- (*server_info)->user_session_key = data_blob(zeros, sizeof(zeros));
- (*server_info)->lm_session_key = data_blob(zeros, sizeof(zeros));
+ (*session_info)->session_key = data_blob(zeros, sizeof(zeros));
alpha_strcpy(tmp, (*server_info)->info3->base.account_name.string,
". _-$", sizeof(tmp));
- (*server_info)->sanitized_username = talloc_strdup(*server_info, tmp);
+ (*session_info)->unix_info->sanitized_username = talloc_strdup(*session_info, tmp);
- return NT_STATUS_OK;
+ status = NT_STATUS_OK;
+done:
+ TALLOC_FREE(tmp_ctx);
+ return status;
}
/***************************************************************************
- Make (and fill) a user_info struct for a system user login.
+ Make (and fill) a auth_session_info struct for a system user login.
This *must* succeed for smbd to start.
***************************************************************************/
-static NTSTATUS make_new_server_info_system(TALLOC_CTX *mem_ctx,
- struct auth_serversupplied_info **server_info)
+static NTSTATUS make_new_session_info_system(TALLOC_CTX *mem_ctx,
+ struct auth_session_info **session_info)
{
struct passwd *pwd;
NTSTATUS status;
pwd = getpwuid_alloc(mem_ctx, sec_initial_uid());
if (pwd == NULL) {
- return NT_STATUS_NO_MEMORY;
+ return NT_STATUS_NO_SUCH_USER;
}
- status = make_serverinfo_from_username(mem_ctx,
- pwd->pw_name,
- false,
- server_info);
+ status = make_session_info_from_username(mem_ctx,
+ pwd->pw_name,
+ false,
+ session_info);
+ TALLOC_FREE(pwd);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
- (*server_info)->system = true;
+ (*session_info)->unix_info->system = true;
+
+ status = add_sid_to_array_unique((*session_info)->security_token->sids,
+ &global_sid_System,
+ &(*session_info)->security_token->sids,
+ &(*session_info)->security_token->num_sids);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE((*session_info));
+ return status;
+ }
return NT_STATUS_OK;
}
/****************************************************************************
- Fake a auth_serversupplied_info just from a username
+ Fake a auth_session_info just from a username (as a
+ session_info structure, with create_local_token() already called on
+ it.
****************************************************************************/
-NTSTATUS make_serverinfo_from_username(TALLOC_CTX *mem_ctx,
- const char *username,
- bool is_guest,
- struct auth_serversupplied_info **presult)
+NTSTATUS make_session_info_from_username(TALLOC_CTX *mem_ctx,
+ const char *username,
+ bool is_guest,
+ struct auth_session_info **session_info)
{
struct auth_serversupplied_info *result;
struct passwd *pwd;
NTSTATUS status;
- pwd = getpwnam_alloc(talloc_tos(), username);
+ pwd = Get_Pwnam_alloc(talloc_tos(), username);
if (pwd == NULL) {
return NT_STATUS_NO_SUCH_USER;
}
result->nss_token = true;
result->guest = is_guest;
- status = create_local_token(result);
-
- if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(result);
- return status;
- }
-
- *presult = result;
- return NT_STATUS_OK;
+ /* 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);
+ 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) {
- dst->utok.groups = (gid_t *)TALLOC_MEMDUP(
- dst, src->utok.groups,
+ /* 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->unix_token->groups,
sizeof(gid_t)*dst->utok.ngroups);
} else {
dst->utok.groups = NULL;
}
- if (src->ptok) {
- dst->ptok = dup_nt_token(dst, src->ptok);
- if (!dst->ptok) {
- 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->user_session_key = data_blob_talloc( dst, src->user_session_key.data,
- src->user_session_key.length);
+ 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->pam_handle = NULL;
- 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);
+ dst->sanitized_username = talloc_strdup(dst, src->unix_info->sanitized_username);
if (!dst->sanitized_username) {
TALLOC_FREE(dst);
return NULL;
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;
+ }
+
+ return dst;
+}
+
/*
* Set a new session key. Used in the rpc server where we have to override the
* SMB level session key with SystemLibraryDTC
*/
-bool server_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->user_session_key.data);
+ TALLOC_FREE(info->session_key.data);
- info->user_session_key = data_blob_talloc(
+ info->session_key = data_blob_talloc(
info, session_key.data, session_key.length);
- return (info->user_session_key.data != NULL);
+ 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 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;
-bool init_system_info(void)
+NTSTATUS init_system_info(void)
{
if (system_info != NULL)
- return True;
+ return NT_STATUS_OK;
- return NT_STATUS_IS_OK(make_new_server_info_system(talloc_autofree_context(), &system_info));
+ return make_new_session_info_system(NULL, &system_info);
}
-NTSTATUS make_server_info_system(TALLOC_CTX *mem_ctx,
- struct auth_serversupplied_info **server_info)
+NTSTATUS make_session_info_system(TALLOC_CTX *mem_ctx,
+ struct auth_session_info **session_info)
{
if (system_info == NULL) return NT_STATUS_UNSUCCESSFUL;
- *server_info = copy_serverinfo(mem_ctx, system_info);
- return (*server_info != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
+ *session_info = copy_session_info(mem_ctx, system_info);
+ return (*session_info != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
+}
+
+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;
- NT_USER_TOKEN *nt_token;
+ struct security_token *nt_token;
groups = (gid_t *)memdup(src->ut.groups,
sizeof(gid_t) * src->ut.ngroups);
static NTSTATUS check_account(TALLOC_CTX *mem_ctx, const char *domain,
const char *username, char **found_username,
- uid_t *uid, gid_t *gid,
+ struct passwd **pwd,
bool *username_was_mapped)
{
- fstring dom_user, lower_username;
- fstring real_username;
+ char *orig_dom_user = NULL;
+ char *dom_user = NULL;
+ char *lower_username = NULL;
+ char *real_username = NULL;
struct passwd *passwd;
- fstrcpy( lower_username, username );
+ lower_username = talloc_strdup(mem_ctx, username);
+ if (!lower_username) {
+ return NT_STATUS_NO_MEMORY;
+ }
strlower_m( lower_username );
- fstr_sprintf(dom_user, "%s%c%s", domain, *lp_winbind_separator(),
- lower_username);
+ orig_dom_user = talloc_asprintf(mem_ctx,
+ "%s%c%s",
+ domain,
+ *lp_winbind_separator(),
+ lower_username);
+ if (!orig_dom_user) {
+ return NT_STATUS_NO_MEMORY;
+ }
/* Get the passwd struct. Try to create the account if necessary. */
- *username_was_mapped = map_username(dom_user);
+ *username_was_mapped = map_username(mem_ctx, orig_dom_user, &dom_user);
+ if (!dom_user) {
+ return NT_STATUS_NO_MEMORY;
+ }
- passwd = smb_getpwnam( NULL, 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));
return NT_STATUS_NO_SUCH_USER;
}
- *uid = passwd->pw_uid;
- *gid = passwd->pw_gid;
+ if (!real_username) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ *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?
*found_username = talloc_strdup( mem_ctx, real_username );
- TALLOC_FREE(passwd);
-
return NT_STATUS_OK;
}
the username if we fallback to the username only.
****************************************************************************/
-struct passwd *smb_getpwnam( TALLOC_CTX *mem_ctx, char *domuser,
- fstring save_username, bool create )
+struct passwd *smb_getpwnam( TALLOC_CTX *mem_ctx, const char *domuser,
+ char **p_save_username, bool create )
{
struct passwd *pw = NULL;
- char *p;
- fstring username;
+ char *p = NULL;
+ char *username = NULL;
/* we only save a copy of the username it has been mangled
by winbindd use default domain */
-
- save_username[0] = '\0';
+ *p_save_username = NULL;
/* don't call map_username() here since it has to be done higher
up the stack so we don't call it multiple times */
- fstrcpy( username, domuser );
+ username = talloc_strdup(mem_ctx, domuser);
+ if (!username) {
+ return NULL;
+ }
p = strchr_m( username, *lp_winbind_separator() );
/* code for a DOMAIN\user string */
if ( p ) {
- fstring strip_username;
-
pw = Get_Pwnam_alloc( mem_ctx, domuser );
- if ( pw ) {
+ if ( pw ) {
/* make sure we get the case of the username correct */
/* work around 'winbind use default domain = yes' */
*p = '\0';
domain = username;
- fstr_sprintf(save_username, "%s%c%s", domain, *lp_winbind_separator(), pw->pw_name);
+ *p_save_username = talloc_asprintf(mem_ctx,
+ "%s%c%s",
+ domain,
+ *lp_winbind_separator(),
+ pw->pw_name);
+ if (!*p_save_username) {
+ TALLOC_FREE(pw);
+ return NULL;
+ }
+ } else {
+ *p_save_username = talloc_strdup(mem_ctx, pw->pw_name);
}
- else
- fstrcpy( save_username, pw->pw_name );
- /* whew -- done! */
+ /* whew -- done! */
return pw;
}
/* remember that p and username are overlapping memory */
p++;
- fstrcpy( strip_username, p );
- fstrcpy( username, strip_username );
+ username = talloc_strdup(mem_ctx, p);
+ if (!username) {
+ return NULL;
+ }
}
/* just lookup a plain username */
/* one last check for a valid passwd struct */
- if ( pw )
- fstrcpy( save_username, pw->pw_name );
-
+ if (pw) {
+ *p_save_username = talloc_strdup(mem_ctx, pw->pw_name);
+ }
return pw;
}
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;
-
- uid_t uid = (uid_t)-1;
- gid_t gid = (gid_t)-1;
-
+ 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
/* this call will try to create the user if necessary */
nt_status = check_account(mem_ctx, nt_domain, sent_nt_username,
- &found_username, &uid, &gid,
+ &found_username, &pwd,
&username_was_mapped);
if (!NT_STATUS_IS_OK(nt_status)) {
}
/* copy in the info3 */
- result->info3 = copy_netr_SamInfo3(result, info3);
+ result->info3 = i3 = 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;
- result->utok.uid = uid;
- result->utok.gid = gid;
-
- /* Create a 'combined' list of all SIDs we might want in the SD */
-
- result->num_sids = 0;
- result->sids = NULL;
-
- nt_status = sid_array_from_info3(result, info3,
- &result->sids,
- &result->num_sids,
- false, false);
+ /* We can't just trust that the primary group sid sent us is something
+ * we can really use. Obtain the usable 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;
}
- /* Ensure the primary group sid is at position 0. */
- sort_sid_array_for_smbd(result, &group_sid);
+ /* 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->user_session_key = data_blob_null;
+ result->session_key = data_blob_null;
} else {
- result->user_session_key = data_blob_talloc(
+ result->session_key = data_blob_talloc(
result, info3->base.key.key,
sizeof(info3->base.key.key));
}
result->nss_token |= username_was_mapped;
+ result->guest = (info3->base.user_flags & NETLOGON_GUEST);
+
*server_info = result;
return NT_STATUS_OK;
git.samba.org / amitay / samba.git / blobdiff