*/
#include "includes.h"
+#include "smbd/smbd.h"
#include "smbd/globals.h"
#include "../libcli/smb/smb_common.h"
#include "../libcli/auth/spnego.h"
#include "../libcli/auth/ntlmssp.h"
+#include "ntlmssp_wrap.h"
+#include "../librpc/gen_ndr/krb5pac.h"
+#include "libads/kerberos_proto.h"
+#include "../lib/util/asn1.h"
+#include "auth.h"
+#include "../lib/tsocket/tsocket.h"
+#include "../libcli/security/security.h"
static NTSTATUS smbd_smb2_session_setup(struct smbd_smb2_request *smb2req,
uint64_t in_session_id,
return 0;
}
-static NTSTATUS setup_ntlmssp_server_info(struct smbd_smb2_session *session,
- NTSTATUS status)
-{
- if (NT_STATUS_IS_OK(status)) {
- status = auth_ntlmssp_server_info(session,
- session->auth_ntlmssp_state,
- &session->server_info);
- } else {
- /* Note that this server_info won't have a session
- * key. But for map to guest, that's exactly the right
- * thing - we can't reasonably guess the key the
- * client wants, as the password was wrong */
- status = do_map_to_guest(status,
- &session->server_info,
- auth_ntlmssp_get_username(session->auth_ntlmssp_state),
- auth_ntlmssp_get_domain(session->auth_ntlmssp_state));
- }
- return status;
-}
-
#ifdef HAVE_KRB5
static NTSTATUS smbd_smb2_session_setup_krb5(struct smbd_smb2_session *session,
struct smbd_smb2_request *smb2req,
DATA_BLOB secblob_out = data_blob_null;
uint8 tok_id[2];
struct PAC_LOGON_INFO *logon_info = NULL;
- char *client = NULL;
- char *p = NULL;
+ char *principal = NULL;
+ char *user = NULL;
char *domain = NULL;
struct passwd *pw = NULL;
NTSTATUS status;
- fstring user;
- fstring real_username;
+ char *real_username;
fstring tmp;
bool username_was_mapped = false;
bool map_domainuser_to_guest = false;
- if (!spnego_parse_krb5_wrap(*secblob, &ticket, tok_id)) {
+ if (!spnego_parse_krb5_wrap(talloc_tos(), *secblob, &ticket, tok_id)) {
status = NT_STATUS_LOGON_FAILURE;
goto fail;
}
status = ads_verify_ticket(smb2req, lp_realm(), 0, &ticket,
- &client, &logon_info, &ap_rep,
- &session_key, true);
+ &principal, &logon_info, &ap_rep,
+ &session_key, true);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1,("smb2: Failed to verify incoming ticket with error %s!\n",
goto fail;
}
- DEBUG(3,("smb2: Ticket name is [%s]\n", client));
-
- p = strchr_m(client, '@');
- if (!p) {
- DEBUG(3,("smb2: %s Doesn't look like a valid principal\n",
- client));
- status = NT_STATUS_LOGON_FAILURE;
+ status = get_user_from_kerberos_info(talloc_tos(),
+ session->sconn->remote_hostname,
+ principal, logon_info,
+ &username_was_mapped,
+ &map_domainuser_to_guest,
+ &user, &domain,
+ &real_username, &pw);
+ if (!NT_STATUS_IS_OK(status)) {
goto fail;
}
- *p = 0;
-
/* save the PAC data if we have it */
-
if (logon_info) {
- netsamlogon_cache_store(client, &logon_info->info3);
- }
-
- if (!strequal(p+1, lp_realm())) {
- DEBUG(3,("smb2: Ticket for foreign realm %s@%s\n", client, p+1));
- if (!lp_allow_trusted_domains()) {
- status = NT_STATUS_LOGON_FAILURE;
- goto fail;
- }
- }
-
- /* this gives a fully qualified user name (ie. with full realm).
- that leads to very long usernames, but what else can we do? */
-
- domain = p+1;
-
- if (logon_info && logon_info->info3.base.domain.string) {
- domain = talloc_strdup(talloc_tos(),
- logon_info->info3.base.domain.string);
- if (!domain) {
- status = NT_STATUS_NO_MEMORY;
- goto fail;
- }
- DEBUG(10, ("smb2: Mapped to [%s] (using PAC)\n", domain));
- } else {
-
- /* If we have winbind running, we can (and must) shorten the
- username by using the short netbios name. Otherwise we will
- have inconsistent user names. With Kerberos, we get the
- fully qualified realm, with ntlmssp we get the short
- name. And even w2k3 does use ntlmssp if you for example
- connect to an ip address. */
-
- wbcErr wbc_status;
- struct wbcDomainInfo *info = NULL;
-
- DEBUG(10, ("smb2: Mapping [%s] to short name\n", domain));
-
- wbc_status = wbcDomainInfo(domain, &info);
-
- if (WBC_ERROR_IS_OK(wbc_status)) {
- domain = talloc_strdup(talloc_tos(), info->short_name);
-
- wbcFreeMemory(info);
- if (!domain) {
- status = NT_STATUS_NO_MEMORY;
- goto fail;
- }
- DEBUG(10, ("smb2: Mapped to [%s] (using Winbind)\n", domain));
- } else {
- DEBUG(3, ("smb2: Could not find short name: %s\n",
- wbcErrorString(wbc_status)));
- }
- }
-
- /* We have to use fstring for this - map_username requires it. */
- fstr_sprintf(user, "%s%c%s", domain, *lp_winbind_separator(), client);
-
- /* lookup the passwd struct, create a new user if necessary */
-
- username_was_mapped = map_username(user);
-
- pw = smb_getpwnam(talloc_tos(), user, real_username, true );
- if (pw) {
- /* if a real user check pam account restrictions */
- /* only really perfomed if "obey pam restriction" is true */
- /* do this before an eventual mapping to guest occurs */
- status = smb_pam_accountcheck(pw->pw_name);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(1,("smb2: PAM account restriction "
- "prevents user login\n"));
- goto fail;
- }
- }
-
- if (!pw) {
-
- /* this was originally the behavior of Samba 2.2, if a user
- did not have a local uid but has been authenticated, then
- map them to a guest account */
-
- if (lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_UID){
- map_domainuser_to_guest = true;
- fstrcpy(user,lp_guestaccount());
- pw = smb_getpwnam(talloc_tos(), user, real_username, true );
- }
-
- /* extra sanity check that the guest account is valid */
-
- if (!pw) {
- DEBUG(1,("smb2: Username %s is invalid on this system\n",
- user));
- status = NT_STATUS_LOGON_FAILURE;
- goto fail;
- }
+ netsamlogon_cache_store(user, &logon_info->info3);
}
/* setup the string used by %U */
-
sub_set_smb_name(real_username);
- reload_services(true);
-
- if (map_domainuser_to_guest) {
- make_server_info_guest(session, &session->server_info);
- } else if (logon_info) {
- /* pass the unmapped username here since map_username()
- will be called again from inside make_server_info_info3() */
-
- status = make_server_info_info3(session,
- client,
- domain,
- &session->server_info,
- &logon_info->info3);
- if (!NT_STATUS_IS_OK(status) ) {
- DEBUG(1,("smb2: make_server_info_info3 failed: %s!\n",
- nt_errstr(status)));
- goto fail;
- }
-
- } else {
- /*
- * We didn't get a PAC, we have to make up the user
- * ourselves. Try to ask the pdb backend to provide
- * SID consistency with ntlmssp session setup
- */
- struct samu *sampass;
- /* The stupid make_server_info_XX functions here
- don't take a talloc context. */
- struct auth_serversupplied_info *tmp_server_info = NULL;
-
- sampass = samu_new(talloc_tos());
- if (sampass == NULL) {
- status = NT_STATUS_NO_MEMORY;
- goto fail;
- }
- if (pdb_getsampwnam(sampass, real_username)) {
- DEBUG(10, ("smb2: found user %s in passdb, calling "
- "make_server_info_sam\n", real_username));
- status = make_server_info_sam(&tmp_server_info, sampass);
- TALLOC_FREE(sampass);
- } else {
- /*
- * User not in passdb, make it up artificially
- */
- TALLOC_FREE(sampass);
- DEBUG(10, ("smb2: didn't find user %s in passdb, calling "
- "make_server_info_pw\n", real_username));
- status = make_server_info_pw(&tmp_server_info,
- real_username,
- pw);
- }
-
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(1,("smb2: make_server_info_[sam|pw] failed: %s!\n",
- nt_errstr(status)));
- goto fail;
- }
-
- /* Steal tmp_server_info into the session->server_info
- pointer. */
- session->server_info = talloc_move(session, &tmp_server_info);
-
- /* make_server_info_pw does not set the domain. Without this
- * we end up with the local netbios name in substitutions for
- * %D. */
-
- if (session->server_info->info3 != NULL) {
- session->server_info->info3->base.domain.string =
- talloc_strdup(session->server_info->info3, domain);
- }
-
- }
-
- session->server_info->nss_token |= username_was_mapped;
+ /* reload services so that the new %U is taken into account */
+ reload_services(smb2req->sconn->msg_ctx, smb2req->sconn->sock, true);
- /* we need to build the token for the user. make_server_info_guest()
- already does this */
-
- if (!session->server_info->ptok ) {
- status = create_local_token(session->server_info);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(10,("smb2: failed to create local token: %s\n",
- nt_errstr(status)));
- goto fail;
- }
+ status = make_session_info_krb5(session,
+ user, domain, real_username, pw,
+ logon_info, map_domainuser_to_guest,
+ username_was_mapped,
+ &session_key,
+ &session->session_info);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("smb2: make_server_info_krb5 failed\n"));
+ goto fail;
}
if ((in_security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) ||
session->do_signing = true;
}
- if (session->server_info->guest) {
+ if (security_session_user_level(session->session_info, NULL) < SECURITY_USER) {
/* we map anonymous to guest internally */
*out_session_flags |= SMB2_SESSION_FLAG_IS_GUEST;
*out_session_flags |= SMB2_SESSION_FLAG_IS_NULL;
session->do_signing = false;
}
- data_blob_free(&session->server_info->user_session_key);
- session->server_info->user_session_key =
- data_blob_talloc(
- session->server_info,
- session_key.data,
- session_key.length);
- if (session_key.length > 0) {
- if (session->server_info->user_session_key.data == NULL) {
- status = NT_STATUS_NO_MEMORY;
- goto fail;
- }
- }
- session->session_key = session->server_info->user_session_key;
+ session->session_key = session->session_info->session_key;
session->compat_vuser = talloc_zero(session, user_struct);
if (session->compat_vuser == NULL) {
}
session->compat_vuser->auth_ntlmssp_state = NULL;
session->compat_vuser->homes_snum = -1;
- session->compat_vuser->server_info = session->server_info;
+ session->compat_vuser->session_info = session->session_info;
session->compat_vuser->session_keystr = NULL;
session->compat_vuser->vuid = session->vuid;
DLIST_ADD(session->sconn->smb1.sessions.validated_users, session->compat_vuser);
/* This is a potentially untrusted username */
- alpha_strcpy(tmp,
- client,
- ". _-$",
- sizeof(tmp));
- session->server_info->sanitized_username = talloc_strdup(
- session->server_info, tmp);
+ alpha_strcpy(tmp, user, ". _-$", sizeof(tmp));
+ session->session_info->unix_info->sanitized_username =
+ talloc_strdup(session->session_info, tmp);
- if (!session->server_info->guest) {
+ if (security_session_user_level(session->session_info, NULL) >= SECURITY_USER) {
session->compat_vuser->homes_snum =
- register_homes_share(session->server_info->unix_name);
+ register_homes_share(session->session_info->unix_info->unix_name);
}
- if (!session_claim(sconn_server_id(session->sconn),
- session->compat_vuser)) {
+ if (!session_claim(session->sconn, session->compat_vuser)) {
DEBUG(1, ("smb2: Failed to claim session "
"for vuid=%d\n",
session->compat_vuser->vuid));
status = NT_STATUS_OK;
/* wrap that up in a nice GSS-API wrapping */
- ap_rep_wrapped = spnego_gen_krb5_wrap(ap_rep,
+ ap_rep_wrapped = spnego_gen_krb5_wrap(talloc_tos(), ap_rep,
TOK_ID_KRB_AP_REP);
secblob_out = spnego_gen_auth_response(
+ talloc_tos(),
&ap_rep_wrapped,
status,
mechOID);
ap_rep_wrapped = data_blob_null;
secblob_out = spnego_gen_auth_response(
+ talloc_tos(),
&ap_rep_wrapped,
status,
mechOID);
{
DATA_BLOB secblob_in = data_blob_null;
DATA_BLOB chal_out = data_blob_null;
- DATA_BLOB secblob_out = data_blob_null;
char *kerb_mech = NULL;
NTSTATUS status;
/* Ensure we have no old NTLM state around. */
- auth_ntlmssp_end(&session->auth_ntlmssp_state);
+ TALLOC_FREE(session->auth_ntlmssp_state);
- status = parse_spnego_mechanisms(in_security_buffer,
+ status = parse_spnego_mechanisms(talloc_tos(), in_security_buffer,
&secblob_in, &kerb_mech);
if (!NT_STATUS_IS_OK(status)) {
goto out;
status = NT_STATUS_MORE_PROCESSING_REQUIRED;
} else {
/* Fall back to NTLMSSP. */
- status = auth_ntlmssp_start(&session->auth_ntlmssp_state);
+ status = auth_ntlmssp_start(session->sconn->remote_address,
+ &session->auth_ntlmssp_state);
if (!NT_STATUS_IS_OK(status)) {
goto out;
}
goto out;
}
- secblob_out = spnego_gen_auth_response(&chal_out,
+ *out_security_buffer = spnego_gen_auth_response(smb2req,
+ &chal_out,
status,
OID_NTLMSSP);
- *out_security_buffer = data_blob_talloc(smb2req,
- secblob_out.data,
- secblob_out.length);
- if (secblob_out.data && out_security_buffer->data == NULL) {
+ if (out_security_buffer->data == NULL) {
status = NT_STATUS_NO_MEMORY;
goto out;
}
out:
data_blob_free(&secblob_in);
- data_blob_free(&secblob_out);
data_blob_free(&chal_out);
- SAFE_FREE(kerb_mech);
+ TALLOC_FREE(kerb_mech);
if (!NT_STATUS_IS_OK(status) &&
!NT_STATUS_EQUAL(status,
NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- auth_ntlmssp_end(&session->auth_ntlmssp_state);
+ TALLOC_FREE(session->auth_ntlmssp_state);
TALLOC_FREE(session);
}
return status;
session->do_signing = true;
}
- if (session->server_info->guest) {
+ if (security_session_user_level(session->session_info, NULL) < SECURITY_USER) {
/* we map anonymous to guest internally */
*out_session_flags |= SMB2_SESSION_FLAG_IS_GUEST;
*out_session_flags |= SMB2_SESSION_FLAG_IS_NULL;
session->do_signing = false;
}
- session->session_key = session->server_info->user_session_key;
+ session->session_key = session->session_info->session_key;
session->compat_vuser = talloc_zero(session, user_struct);
if (session->compat_vuser == NULL) {
- auth_ntlmssp_end(&session->auth_ntlmssp_state);
+ TALLOC_FREE(session->auth_ntlmssp_state);
TALLOC_FREE(session);
return NT_STATUS_NO_MEMORY;
}
session->compat_vuser->auth_ntlmssp_state = session->auth_ntlmssp_state;
session->compat_vuser->homes_snum = -1;
- session->compat_vuser->server_info = session->server_info;
+ session->compat_vuser->session_info = session->session_info;
session->compat_vuser->session_keystr = NULL;
session->compat_vuser->vuid = session->vuid;
DLIST_ADD(session->sconn->smb1.sessions.validated_users, session->compat_vuser);
auth_ntlmssp_get_username(session->auth_ntlmssp_state),
". _-$",
sizeof(tmp));
- session->server_info->sanitized_username = talloc_strdup(
- session->server_info, tmp);
+ session->session_info->unix_info->sanitized_username = talloc_strdup(
+ session->session_info, tmp);
- if (!session->compat_vuser->server_info->guest) {
+ if (security_session_user_level(session->session_info, NULL) >= SECURITY_USER) {
session->compat_vuser->homes_snum =
- register_homes_share(session->server_info->unix_name);
+ register_homes_share(session->session_info->unix_info->unix_name);
}
- if (!session_claim(sconn_server_id(session->sconn),
- session->compat_vuser)) {
+ if (!session_claim(session->sconn, session->compat_vuser)) {
DEBUG(1, ("smb2: Failed to claim session "
"for vuid=%d\n",
session->compat_vuser->vuid));
- auth_ntlmssp_end(&session->auth_ntlmssp_state);
+ TALLOC_FREE(session->auth_ntlmssp_state);
TALLOC_FREE(session);
return NT_STATUS_LOGON_FAILURE;
}
{
DATA_BLOB auth = data_blob_null;
DATA_BLOB auth_out = data_blob_null;
- DATA_BLOB secblob_out = data_blob_null;
NTSTATUS status;
- if (!spnego_parse_auth(in_security_buffer, &auth)) {
+ if (!spnego_parse_auth(talloc_tos(), in_security_buffer, &auth)) {
TALLOC_FREE(session);
return NT_STATUS_LOGON_FAILURE;
}
DATA_BLOB secblob_in = data_blob_null;
char *kerb_mech = NULL;
- status = parse_spnego_mechanisms(in_security_buffer,
+ status = parse_spnego_mechanisms(talloc_tos(),
+ in_security_buffer,
&secblob_in, &kerb_mech);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(session);
out_session_id);
data_blob_free(&secblob_in);
- SAFE_FREE(kerb_mech);
+ TALLOC_FREE(kerb_mech);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(session);
}
"not enabled\n"));
TALLOC_FREE(session);
data_blob_free(&secblob_in);
- SAFE_FREE(kerb_mech);
+ TALLOC_FREE(kerb_mech);
return NT_STATUS_LOGON_FAILURE;
}
}
if (session->auth_ntlmssp_state == NULL) {
- status = auth_ntlmssp_start(&session->auth_ntlmssp_state);
+ status = auth_ntlmssp_start(session->sconn->remote_address,
+ &session->auth_ntlmssp_state);
if (!NT_STATUS_IS_OK(status)) {
data_blob_free(&auth);
TALLOC_FREE(session);
status = auth_ntlmssp_update(session->auth_ntlmssp_state,
auth,
&auth_out);
- if (!NT_STATUS_IS_OK(status) &&
- !NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- status = setup_ntlmssp_server_info(session, status);
+ /* If status is NT_STATUS_OK then we need to get the token.
+ * Map to guest is now internal to auth_ntlmssp */
+ if (NT_STATUS_IS_OK(status)) {
+ status = auth_ntlmssp_steal_session_info(session,
+ session->auth_ntlmssp_state,
+ &session->session_info);
}
if (!NT_STATUS_IS_OK(status) &&
!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- auth_ntlmssp_end(&session->auth_ntlmssp_state);
+ TALLOC_FREE(session->auth_ntlmssp_state);
data_blob_free(&auth);
TALLOC_FREE(session);
return status;
data_blob_free(&auth);
- secblob_out = spnego_gen_auth_response(&auth_out,
- status, NULL);
+ *out_security_buffer = spnego_gen_auth_response(smb2req,
+ &auth_out, status, NULL);
- *out_security_buffer = data_blob_talloc(smb2req,
- secblob_out.data,
- secblob_out.length);
- if (secblob_out.data && out_security_buffer->data == NULL) {
- auth_ntlmssp_end(&session->auth_ntlmssp_state);
+ if (out_security_buffer->data == NULL) {
+ TALLOC_FREE(session->auth_ntlmssp_state);
TALLOC_FREE(session);
return NT_STATUS_NO_MEMORY;
}
DATA_BLOB secblob_out = data_blob_null;
if (session->auth_ntlmssp_state == NULL) {
- status = auth_ntlmssp_start(&session->auth_ntlmssp_state);
+ status = auth_ntlmssp_start(session->sconn->remote_address,
+ &session->auth_ntlmssp_state);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(session);
return status;
secblob_out.data,
secblob_out.length);
if (secblob_out.data && out_security_buffer->data == NULL) {
- auth_ntlmssp_end(&session->auth_ntlmssp_state);
+ TALLOC_FREE(session->auth_ntlmssp_state);
TALLOC_FREE(session);
return NT_STATUS_NO_MEMORY;
}
return status;
}
- status = setup_ntlmssp_server_info(session, status);
+ status = auth_ntlmssp_steal_session_info(session,
+ session->auth_ntlmssp_state,
+ &session->session_info);
if (!NT_STATUS_IS_OK(status)) {
- auth_ntlmssp_end(&session->auth_ntlmssp_state);
+ TALLOC_FREE(session->auth_ntlmssp_state);
TALLOC_FREE(session);
return status;
}
/* Unknown packet type. */
DEBUG(1,("Unknown packet type %u in smb2 sessionsetup\n",
(unsigned int)in_security_buffer.data[0] ));
- auth_ntlmssp_end(&session->auth_ntlmssp_state);
+ TALLOC_FREE(session->auth_ntlmssp_state);
TALLOC_FREE(session);
return NT_STATUS_LOGON_FAILURE;
}
-NTSTATUS smbd_smb2_request_check_session(struct smbd_smb2_request *req)
-{
- const uint8_t *inhdr;
- const uint8_t *outhdr;
- int i = req->current_idx;
- uint64_t in_session_id;
- void *p;
- struct smbd_smb2_session *session;
- bool chained_fixup = false;
-
- inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
-
- in_session_id = BVAL(inhdr, SMB2_HDR_SESSION_ID);
-
- if (in_session_id == (0xFFFFFFFFFFFFFFFFLL)) {
- if (req->async) {
- /*
- * async request - fill in session_id from
- * already setup request out.vector[].iov_base.
- */
- outhdr = (const uint8_t *)req->out.vector[i].iov_base;
- in_session_id = BVAL(outhdr, SMB2_HDR_SESSION_ID);
- } else if (i > 2) {
- /*
- * Chained request - fill in session_id from
- * the previous request out.vector[].iov_base.
- */
- outhdr = (const uint8_t *)req->out.vector[i-3].iov_base;
- in_session_id = BVAL(outhdr, SMB2_HDR_SESSION_ID);
- chained_fixup = true;
- }
- }
-
- /* lookup an existing session */
- p = idr_find(req->sconn->smb2.sessions.idtree, in_session_id);
- if (p == NULL) {
- return NT_STATUS_USER_SESSION_DELETED;
- }
- session = talloc_get_type_abort(p, struct smbd_smb2_session);
-
- if (!NT_STATUS_IS_OK(session->status)) {
- return NT_STATUS_ACCESS_DENIED;
- }
-
- set_current_user_info(session->server_info->sanitized_username,
- session->server_info->unix_name,
- session->server_info->info3->base.domain.string);
-
- req->session = session;
-
- if (chained_fixup) {
- /* Fix up our own outhdr. */
- outhdr = (const uint8_t *)req->out.vector[i].iov_base;
- SBVAL(outhdr, SMB2_HDR_SESSION_ID, in_session_id);
- }
- return NT_STATUS_OK;
-}
-
NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req)
{
const uint8_t *inbody;
git.samba.org / amitay / samba.git / blobdiff