static int next_vuid = VUID_OFFSET;
static int num_validated_vuids;
-/****************************************************************************
- Check if a uid has been validated, and return an pointer to the user_struct
- if it has. NULL if not. vuid is biased by an offset. This allows us to
- tell random client vuid's (normally zero) from valid vuids.
-****************************************************************************/
+enum server_allocated_state { SERVER_ALLOCATED_REQUIRED_YES,
+ SERVER_ALLOCATED_REQUIRED_NO,
+ SERVER_ALLOCATED_REQUIRED_ANY};
-user_struct *get_valid_user_struct(uint16 vuid)
+static user_struct *get_valid_user_struct_internal(uint16 vuid,
+ enum server_allocated_state server_allocated)
{
user_struct *usp;
int count=0;
return NULL;
for (usp=validated_users;usp;usp=usp->next,count++) {
- if (vuid == usp->vuid && usp->server_info) {
+ if (vuid == usp->vuid) {
+ switch (server_allocated) {
+ case SERVER_ALLOCATED_REQUIRED_YES:
+ if (usp->server_info == NULL) {
+ continue;
+ }
+ break;
+ case SERVER_ALLOCATED_REQUIRED_NO:
+ if (usp->server_info != NULL) {
+ continue;
+ }
+ case SERVER_ALLOCATED_REQUIRED_ANY:
+ break;
+ }
if (count > 10) {
DLIST_PROMOTE(validated_users, usp);
}
}
/****************************************************************************
- Get the user struct of a partial NTLMSSP login
+ Check if a uid has been validated, and return an pointer to the user_struct
+ if it has. NULL if not. vuid is biased by an offset. This allows us to
+ tell random client vuid's (normally zero) from valid vuids.
****************************************************************************/
-user_struct *get_partial_auth_user_struct(uint16 vuid)
+user_struct *get_valid_user_struct(uint16 vuid)
{
- user_struct *usp;
- int count=0;
-
- if (vuid == UID_FIELD_INVALID)
- return NULL;
+ return get_valid_user_struct_internal(vuid, SERVER_ALLOCATED_REQUIRED_YES);
+}
- for (usp=validated_users;usp;usp=usp->next,count++) {
- if (vuid == usp->vuid && !usp->server_info) {
- if (count > 10) {
- DLIST_PROMOTE(validated_users, usp);
- }
- return usp;
- }
+BOOL is_partial_auth_vuid(uint16 vuid)
+{
+ if (vuid == UID_FIELD_INVALID) {
+ return False;
}
+ return get_valid_user_struct_internal(vuid,
+ SERVER_ALLOCATED_REQUIRED_NO) ? True : False;
+}
- return NULL;
+/****************************************************************************
+ Get the user struct of a partial NTLMSSP login
+****************************************************************************/
+
+user_struct *get_partial_auth_user_struct(uint16 vuid)
+{
+ return get_valid_user_struct_internal(vuid,
+ SERVER_ALLOCATED_REQUIRED_NO);
}
/****************************************************************************
void invalidate_vuid(uint16 vuid)
{
- user_struct *vuser = get_valid_user_struct(vuid);
+ user_struct *vuser = NULL;
- if (vuser == NULL)
+ if (vuid == UID_FIELD_INVALID) {
return;
-
+ }
+
+ vuser = get_valid_user_struct_internal(vuid,
+ SERVER_ALLOCATED_REQUIRED_ANY);
+ if (vuser == NULL) {
+ return;
+ }
+
session_yield(vuser);
data_blob_free(&vuser->session_key);
for (usp=validated_users;usp;usp=next) {
next = usp->next;
-
invalidate_vuid(usp->vuid);
}
}
-/**
- * register that a valid login has been performed, establish 'session'.
- * @param server_info The token returned from the authentication process.
- * (now 'owned' by register_vuid)
- *
- * @param session_key The User session key for the login session (now also
- * 'owned' by register_vuid)
- *
- * @param respose_blob The NT challenge-response, if available. (May be
- * freed after this call)
- *
- * @param smb_name The untranslated name of the user
- *
- * @return Newly allocated vuid, biased by an offset. (This allows us to
- * tell random client vuid's (normally zero) from valid vuids.)
- *
- */
+/****************************************************
+ Create a new partial auth user struct.
+*****************************************************/
-int register_vuid(auth_serversupplied_info *server_info,
- DATA_BLOB session_key, DATA_BLOB response_blob,
- const char *smb_name)
+int register_initial_vuid(void)
{
user_struct *vuser;
/* Paranoia check. */
if(lp_security() == SEC_SHARE) {
- smb_panic("Tried to register uid in security=share");
+ smb_panic("register_initial_vuid: "
+ "Tried to register uid in security=share");
}
/* Limit allowed vuids to 16bits - VUID_OFFSET. */
if (num_validated_vuids >= 0xFFFF-VUID_OFFSET) {
- data_blob_free(&session_key);
return UID_FIELD_INVALID;
}
- if((vuser = TALLOC_ZERO_P(NULL, user_struct)) == NULL) {
- DEBUG(0,("Failed to talloc users struct!\n"));
- data_blob_free(&session_key);
+ if((vuser = talloc_zero(NULL, user_struct)) == NULL) {
+ DEBUG(0,("register_initial_vuid: "
+ "Failed to talloc users struct!\n"));
return UID_FIELD_INVALID;
}
- /* Allocate a free vuid. Yes this is a linear search... :-) */
- while( get_valid_user_struct(next_vuid) != NULL ) {
+ /* Allocate a free vuid. Yes this is a linear search... */
+ while( get_valid_user_struct_internal(next_vuid,
+ SERVER_ALLOCATED_REQUIRED_ANY) != NULL ) {
next_vuid++;
/* Check for vuid wrap. */
- if (next_vuid == UID_FIELD_INVALID)
+ if (next_vuid == UID_FIELD_INVALID) {
next_vuid = VUID_OFFSET;
+ }
}
- DEBUG(10,("register_vuid: allocated vuid = %u\n",
- (unsigned int)next_vuid ));
+ DEBUG(10,("register_initial_vuid: allocated vuid = %u\n",
+ (unsigned int)next_vuid ));
vuser->vuid = next_vuid;
- if (!server_info) {
- /*
- * This happens in an unfinished NTLMSSP session setup. We
- * need to allocate a vuid between the first and second calls
- * to NTLMSSP.
- */
- next_vuid++;
- num_validated_vuids++;
-
- vuser->server_info = NULL;
-
- DLIST_ADD(validated_users, vuser);
-
- return vuser->vuid;
+ /*
+ * This happens in an unfinished NTLMSSP session setup. We
+ * need to allocate a vuid between the first and second calls
+ * to NTLMSSP.
+ */
+ next_vuid++;
+ num_validated_vuids++;
+
+ DLIST_ADD(validated_users, vuser);
+ return vuser->vuid;
+}
+
+/**
+ * register that a valid login has been performed, establish 'session'.
+ * @param server_info The token returned from the authentication process.
+ * (now 'owned' by register_existing_vuid)
+ *
+ * @param session_key The User session key for the login session (now also
+ * 'owned' by register_existing_vuid)
+ *
+ * @param respose_blob The NT challenge-response, if available. (May be
+ * freed after this call)
+ *
+ * @param smb_name The untranslated name of the user
+ *
+ * @return Newly allocated vuid, biased by an offset. (This allows us to
+ * tell random client vuid's (normally zero) from valid vuids.)
+ *
+ */
+
+int register_existing_vuid(uint16 vuid,
+ auth_serversupplied_info *server_info,
+ DATA_BLOB session_key,
+ DATA_BLOB response_blob,
+ const char *smb_name)
+{
+ user_struct *vuser = get_partial_auth_user_struct(vuid);
+ if (!vuser) {
+ goto fail;
}
- /* use this to keep tabs on all our info from the authentication */
+ /* Use this to keep tabs on all our info from the authentication */
vuser->server_info = server_info;
- /* Ensure that the server_info will dissapear with the vuser it is now attached to */
+
+ /* Ensure that the server_info will disappear with
+ * the vuser it is now attached to */
+
talloc_steal(vuser, vuser->server_info);
/* the next functions should be done by a SID mapping system (SMS) as
* the new real sam db won't have reference to unix uids or gids
*/
-
+
vuser->uid = server_info->uid;
vuser->gid = server_info->gid;
-
+
vuser->n_groups = server_info->n_groups;
if (vuser->n_groups) {
- if (!(vuser->groups = (gid_t *)talloc_memdup(vuser, server_info->groups,
- sizeof(gid_t) *
- vuser->n_groups))) {
- DEBUG(0,("register_vuid: failed to talloc_memdup "
- "vuser->groups\n"));
- data_blob_free(&session_key);
- TALLOC_FREE(vuser);
- return UID_FIELD_INVALID;
+ if (!(vuser->groups = (gid_t *)talloc_memdup(vuser,
+ server_info->groups,
+ sizeof(gid_t)*vuser->n_groups))) {
+ DEBUG(0,("register_existing_vuid: "
+ "failed to talloc_memdup vuser->groups\n"));
+ goto fail;
}
}
vuser->guest = server_info->guest;
- fstrcpy(vuser->user.unix_name, server_info->unix_name);
+ fstrcpy(vuser->user.unix_name, server_info->unix_name);
/* This is a potentially untrusted username */
alpha_strcpy(vuser->user.smb_name, smb_name, ". _-$",
- sizeof(vuser->user.smb_name));
+ sizeof(vuser->user.smb_name));
fstrcpy(vuser->user.domain, pdb_get_domain(server_info->sam_account));
fstrcpy(vuser->user.full_name,
- pdb_get_fullname(server_info->sam_account));
+ pdb_get_fullname(server_info->sam_account));
{
/* Keep the homedir handy */
pdb_get_logon_script(server_info->sam_account);
if (!IS_SAM_DEFAULT(server_info->sam_account,
- PDB_UNIXHOMEDIR)) {
+ PDB_UNIXHOMEDIR)) {
const char *unix_homedir =
pdb_get_unix_homedir(server_info->sam_account);
if (unix_homedir) {
TALLOC_FREE(passwd);
}
}
-
+
if (homedir) {
vuser->homedir = homedir;
}
vuser->logon_script = logon_script;
}
}
-
vuser->session_key = session_key;
- DEBUG(10,("register_vuid: (%u,%u) %s %s %s guest=%d\n",
- (unsigned int)vuser->uid,
- (unsigned int)vuser->gid,
- vuser->user.unix_name, vuser->user.smb_name,
- vuser->user.domain, vuser->guest ));
+ DEBUG(10,("register_existing_vuid: (%u,%u) %s %s %s guest=%d\n",
+ (unsigned int)vuser->uid,
+ (unsigned int)vuser->gid,
+ vuser->user.unix_name, vuser->user.smb_name,
+ vuser->user.domain, vuser->guest ));
- DEBUG(3, ("User name: %s\tReal name: %s\n", vuser->user.unix_name,
- vuser->user.full_name));
+ DEBUG(3, ("register_existing_vuid: User name: %s\t"
+ "Real name: %s\n", vuser->user.unix_name,
+ vuser->user.full_name));
- if (server_info->ptok) {
+ if (server_info->ptok) {
vuser->nt_user_token = dup_nt_token(vuser, server_info->ptok);
} else {
- DEBUG(1, ("server_info does not contain a user_token - "
- "cannot continue\n"));
- TALLOC_FREE(vuser);
- data_blob_free(&session_key);
- return UID_FIELD_INVALID;
+ DEBUG(1, ("register_existing_vuid: server_info does not "
+ "contain a user_token - cannot continue\n"));
+ goto fail;
}
- DEBUG(3,("UNIX uid %d is UNIX user %s, and will be vuid %u\n",
- (int)vuser->uid,vuser->user.unix_name, vuser->vuid));
+ DEBUG(3,("register_existing_vuid: UNIX uid %d is UNIX user %s, "
+ "and will be vuid %u\n",
+ (int)vuser->uid,vuser->user.unix_name, vuser->vuid));
next_vuid++;
num_validated_vuids++;
- DLIST_ADD(validated_users, vuser);
-
if (!session_claim(vuser)) {
- DEBUG(1, ("Failed to claim session for vuid=%d\n",
- vuser->vuid));
- invalidate_vuid(vuser->vuid);
- return UID_FIELD_INVALID;
+ DEBUG(1, ("register_existing_vuid: Failed to claim session "
+ "for vuid=%d\n",
+ vuser->vuid));
+ goto fail;
}
- /* Register a home dir service for this user iff
-
- (a) This is not a guest connection,
- (b) we have a home directory defined
- (c) there s not an existing static share by that name
-
- If a share exists by this name (autoloaded or not) reuse it . */
+ /* Register a home dir service for this user if
+ (a) This is not a guest connection,
+ (b) we have a home directory defined
+ (c) there s not an existing static share by that name
+ If a share exists by this name (autoloaded or not) reuse it . */
vuser->homes_snum = -1;
-
- if ( (!vuser->guest) && vuser->unix_homedir && *(vuser->unix_homedir))
- {
+ if ( (!vuser->guest) && vuser->unix_homedir && *(vuser->unix_homedir)) {
int servicenumber = lp_servicenumber(vuser->user.unix_name);
-
if ( servicenumber == -1 ) {
DEBUG(3, ("Adding homes service for user '%s' using "
- "home directory: '%s'\n",
+ "home directory: '%s'\n",
vuser->user.unix_name, vuser->unix_homedir));
vuser->homes_snum =
- add_home_service(vuser->user.unix_name,
- vuser->user.unix_name,
- vuser->unix_homedir);
+ add_home_service(vuser->user.unix_name,
+ vuser->user.unix_name,
+ vuser->unix_homedir);
} else {
DEBUG(3, ("Using static (or previously created) "
- "service for user '%s'; path = '%s'\n",
- vuser->user.unix_name,
- lp_pathname(servicenumber) ));
+ "service for user '%s'; path = '%s'\n",
+ vuser->user.unix_name,
+ lp_pathname(servicenumber) ));
vuser->homes_snum = servicenumber;
}
- }
-
+ }
+
if (srv_is_signing_negotiated() && !vuser->guest &&
- !srv_signing_started()) {
+ !srv_signing_started()) {
/* Try and turn on server signing on the first non-guest
* sessionsetup. */
srv_set_signing(vuser->session_key, response_blob);
}
-
+
/* fill in the current_user_info struct */
set_current_user_info( &vuser->user );
+ return vuser->vuid;
+ fail:
- return vuser->vuid;
+ if (vuser) {
+ invalidate_vuid(vuid);
+ }
+ return UID_FIELD_INVALID;
}
/****************************************************************************
fstring netbios_domain_name;
struct passwd *pw;
fstring user;
- int sess_vuid;
- NTSTATUS ret;
+ int sess_vuid = SVAL(req->inbuf, smb_uid);
+ NTSTATUS ret = NT_STATUS_OK;
PAC_DATA *pac_data;
DATA_BLOB ap_rep, ap_rep_wrapped, response;
auth_serversupplied_info *server_info = NULL;
}
}
- /* register_vuid keeps the server info */
- /* register_vuid takes ownership of session_key, no need to free after this.
- A better interface would copy it.... */
- sess_vuid = register_vuid(server_info, session_key, nullblob, client);
+ /* register_existing_vuid keeps the server info */
+ /* register_existing_vuid takes ownership of session_key on success,
+ * no need to free after this on success. A better interface would copy
+ * it.... */
+
+ if (!is_partial_auth_vuid(sess_vuid)) {
+ sess_vuid = register_initial_vuid();
+ }
+ sess_vuid = register_existing_vuid(sess_vuid,
+ server_info,
+ session_key,
+ nullblob,
+ client);
SAFE_FREE(client);
reply_outbuf(req, 4, 0);
- SSVAL(req->outbuf,smb_uid,vuid);
+ SSVAL(req->outbuf,smb_uid,sess_vuid);
if (sess_vuid == UID_FIELD_INVALID ) {
ret = NT_STATUS_LOGON_FAILURE;
+ data_blob_free(&session_key);
} else {
/* current_user_info is changed on new vuid */
reload_services( True );
SSVAL(req->outbuf, smb_uid, sess_vuid);
sessionsetup_start_signing_engine(server_info, req->inbuf);
+ /* Successful logon. Keep this vuid. */
+ *p_invalidate_vuid = False;
}
/* wrap that up in a nice GSS-API wrapping */
SSVAL(req->outbuf, smb_uid, vuid);
if (NT_STATUS_IS_OK(nt_status)) {
- int sess_vuid;
DATA_BLOB nullblob = data_blob_null;
DATA_BLOB session_key = data_blob((*auth_ntlmssp_state)->ntlmssp_state->session_key.data, (*auth_ntlmssp_state)->ntlmssp_state->session_key.length);
- /* register_vuid keeps the server info */
- sess_vuid = register_vuid(server_info, session_key, nullblob, (*auth_ntlmssp_state)->ntlmssp_state->user);
+ if (!is_partial_auth_vuid(vuid)) {
+ data_blob_free(&session_key);
+ nt_status = NT_STATUS_LOGON_FAILURE;
+ goto out;
+ }
+ /* register_existing_vuid keeps the server info */
+ if (register_existing_vuid(vuid,
+ server_info,
+ session_key, nullblob,
+ (*auth_ntlmssp_state)->ntlmssp_state->user) !=
+ vuid) {
+ data_blob_free(&session_key);
+ nt_status = NT_STATUS_LOGON_FAILURE;
+ goto out;
+ }
+
(*auth_ntlmssp_state)->server_info = NULL;
- if (sess_vuid == UID_FIELD_INVALID ) {
- nt_status = NT_STATUS_LOGON_FAILURE;
- } else {
-
- /* current_user_info is changed on new vuid */
- reload_services( True );
+ /* current_user_info is changed on new vuid */
+ reload_services( True );
- SSVAL(req->outbuf, smb_vwv3, 0);
-
- if (server_info->guest) {
- SSVAL(req->outbuf,smb_vwv2,1);
- }
-
- SSVAL(req->outbuf,smb_uid,sess_vuid);
+ SSVAL(req->outbuf, smb_vwv3, 0);
- sessionsetup_start_signing_engine(server_info, req->inbuf);
+ if (server_info->guest) {
+ SSVAL(req->outbuf,smb_vwv2,1);
}
+
+ SSVAL(req->outbuf,smb_uid,vuid);
+
+ sessionsetup_start_signing_engine(server_info, req->inbuf);
}
+ out:
+
if (wrap) {
response = spnego_gen_auth_response(ntlmssp_blob, nt_status, OID_NTLMSSP);
} else {
if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
/* NB. This is *NOT* an error case. JRA */
auth_ntlmssp_end(auth_ntlmssp_state);
- /* Kill the intermediate vuid */
- invalidate_vuid(vuid);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ /* Kill the intermediate vuid */
+ invalidate_vuid(vuid);
+ }
}
}
}
}
- vuser = get_partial_auth_user_struct(vuid);
- if (!vuser) {
+ /* Did we get a valid vuid ? */
+ if (!is_partial_auth_vuid(vuid)) {
+ /* No, then try and see if this is an intermediate sessionsetup
+ * for a large SPNEGO packet. */
struct pending_auth_data *pad = get_pending_auth_data(smbpid);
if (pad) {
DEBUG(10,("reply_sesssetup_and_X_spnego: found pending vuid %u\n",
(unsigned int)pad->vuid ));
vuid = pad->vuid;
- vuser = get_partial_auth_user_struct(vuid);
}
}
- if (!vuser) {
- vuid = register_vuid(NULL, data_blob_null, data_blob_null, NULL);
- if (vuid == UID_FIELD_INVALID ) {
+ /* Do we have a valid vuid now ? */
+ if (!is_partial_auth_vuid(vuid)) {
+ /* No, start a new authentication setup. */
+ vuid = register_initial_vuid();
+ if (vuid == UID_FIELD_INVALID) {
data_blob_free(&blob1);
reply_nterror(req, nt_status_squash(
NT_STATUS_INVALID_PARAMETER));
return;
}
-
- vuser = get_partial_auth_user_struct(vuid);
}
+ vuser = get_partial_auth_user_struct(vuid);
+ /* This MUST be valid. */
if (!vuser) {
- data_blob_free(&blob1);
- reply_nterror(req, nt_status_squash(
- NT_STATUS_INVALID_PARAMETER));
- return;
+ smb_panic("reply_sesssetup_and_X_spnego: invalid vuid.");
}
-
+
/* Large (greater than 4k) SPNEGO blobs are split into multiple
* sessionsetup requests as the Windows limit on the security blob
* field is 4k. Bug #4400. JRA.
data_blob_free(&session_key);
TALLOC_FREE(server_info);
} else {
- /* register_vuid keeps the server info */
- sess_vuid = register_vuid(server_info, session_key,
- nt_resp.data ? nt_resp : lm_resp,
- sub_user);
+ /* Ignore the initial vuid. */
+ sess_vuid = register_initial_vuid();
if (sess_vuid == UID_FIELD_INVALID) {
data_blob_free(&nt_resp);
data_blob_free(&lm_resp);
+ data_blob_free(&session_key);
+ reply_nterror(req, nt_status_squash(
+ NT_STATUS_LOGON_FAILURE));
+ }
+ /* register_existing_vuid keeps the server info */
+ sess_vuid = register_existing_vuid(sess_vuid,
+ server_info,
+ session_key,
+ nt_resp.data ? nt_resp : lm_resp,
+ sub_user);
+ if (sess_vuid == UID_FIELD_INVALID) {
+ data_blob_free(&nt_resp);
+ data_blob_free(&lm_resp);
+ data_blob_free(&session_key);
reply_nterror(req, nt_status_squash(
NT_STATUS_LOGON_FAILURE));
return;
git.samba.org / samba.git / commitdiff