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-rw-r--r--source3/nsswitch/winbindd_sid.c240
1 files changed, 215 insertions, 25 deletions
diff --git a/source3/nsswitch/winbindd_sid.c b/source3/nsswitch/winbindd_sid.c
index ac1ee11555..0faeec5636 100644
--- a/source3/nsswitch/winbindd_sid.c
+++ b/source3/nsswitch/winbindd_sid.c
@@ -130,16 +130,75 @@ enum winbindd_result winbindd_sid_to_uid(struct winbindd_cli_state *state)
DEBUG(3, ("[%5lu]: sid to uid %s\n", (unsigned long)state->pid,
state->request.data.sid));
- /* Split sid into domain sid and user rid */
if (!string_to_sid(&sid, state->request.data.sid)) {
DEBUG(1, ("Could not get convert sid %s from string\n", state->request.data.sid));
return WINBINDD_ERROR;
}
+ /* This gets a little tricky. If we assume that usernames are syncd between
+ /etc/passwd and the windows domain (such as a member of a Samba domain),
+ the we need to get the uid from the OS and not alocate one ourselves */
+
+ if ( lp_winbind_trusted_domains_only() ) {
+ struct winbindd_domain *domain = NULL;
+ DOM_SID sid2;
+ uint32 rid;
+
+ domain = find_domain_from_name( lp_workgroup() );
+ if ( !domain ) {
+ DEBUG(0,("winbindd_sid_to_uid: can't find my own domain!\n"));
+ return WINBINDD_ERROR;
+ }
+
+ sid_copy( &sid2, &sid );
+ sid_split_rid( &sid2, &rid );
+
+ if ( sid_equal( &sid2, &domain->sid ) ) {
+
+ fstring domain_name;
+ fstring user;
+ enum SID_NAME_USE type;
+ struct passwd *pw = NULL;
+ unid_t id;
+
+ /* ok...here's we know that we are dealing with our
+ own domain (the one to which we are joined). And
+ we know that there must be a UNIX account for this user.
+ So we lookup the sid and the call getpwnam().*/
+
+
+ /* But first check and see if we don't already have a mapping */
+
+ flags = ID_QUERY_ONLY;
+ if ( NT_STATUS_IS_OK(idmap_sid_to_uid(&sid, &(state->response.data.uid), flags)) )
+ return WINBINDD_OK;
+
+ /* now fall back to the hard way */
+
+ if ( !winbindd_lookup_name_by_sid(&sid, domain_name, user, &type) )
+ return WINBINDD_ERROR;
+
+ if ( !(pw = getpwnam(user)) ) {
+ DEBUG(0,("winbindd_sid_to_uid: 'winbind trusted domains only' is "
+ "set but this user [%s] doesn't exist!\n", user));
+ return WINBINDD_ERROR;
+ }
+
+ state->response.data.uid = pw->pw_uid;
+
+ id.uid = pw->pw_uid;
+ idmap_set_mapping( &sid, id, ID_USERID );
+
+ return WINBINDD_OK;
+ }
+
+ }
+
if ( state->request.flags & WBFLAG_QUERY_ONLY )
flags = ID_QUERY_ONLY;
/* Find uid for this sid and return it */
+
if ( !NT_STATUS_IS_OK(idmap_sid_to_uid(&sid, &(state->response.data.uid), flags)) ) {
DEBUG(1, ("Could not get uid for sid %s\n", state->request.data.sid));
return WINBINDD_ERROR;
@@ -167,6 +226,64 @@ enum winbindd_result winbindd_sid_to_gid(struct winbindd_cli_state *state)
return WINBINDD_ERROR;
}
+ /* This gets a little tricky. If we assume that usernames are syncd between
+ /etc/passwd and the windows domain (such as a member of a Samba domain),
+ the we need to get the uid from the OS and not alocate one ourselves */
+
+ if ( lp_winbind_trusted_domains_only() ) {
+ struct winbindd_domain *domain = NULL;
+ DOM_SID sid2;
+ uint32 rid;
+ unid_t id;
+
+ domain = find_domain_from_name( lp_workgroup() );
+ if ( !domain ) {
+ DEBUG(0,("winbindd_sid_to_uid: can't find my own domain!\n"));
+ return WINBINDD_ERROR;
+ }
+
+ sid_copy( &sid2, &sid );
+ sid_split_rid( &sid2, &rid );
+
+ if ( sid_equal( &sid2, &domain->sid ) ) {
+
+ fstring domain_name;
+ fstring group;
+ enum SID_NAME_USE type;
+ struct group *grp = NULL;
+
+ /* ok...here's we know that we are dealing with our
+ own domain (the one to which we are joined). And
+ we know that there must be a UNIX account for this group.
+ So we lookup the sid and the call getpwnam().*/
+
+ /* But first check and see if we don't already have a mapping */
+
+ flags = ID_QUERY_ONLY;
+ if ( NT_STATUS_IS_OK(idmap_sid_to_gid(&sid, &(state->response.data.gid), flags)) )
+ return WINBINDD_OK;
+
+ /* now fall back to the hard way */
+
+ if ( !winbindd_lookup_name_by_sid(&sid, domain_name, group, &type) )
+ return WINBINDD_ERROR;
+
+ if ( !(grp = getgrnam(group)) ) {
+ DEBUG(0,("winbindd_sid_to_uid: 'winbind trusted domains only' is "
+ "set but this group [%s] doesn't exist!\n", group));
+ return WINBINDD_ERROR;
+ }
+
+ state->response.data.gid = grp->gr_gid;
+
+ id.gid = grp->gr_gid;
+ idmap_set_mapping( &sid, id, ID_GROUPID );
+
+ return WINBINDD_OK;
+ }
+
+ }
+
if ( state->request.flags & WBFLAG_QUERY_ONLY )
flags = ID_QUERY_ONLY;
@@ -185,28 +302,65 @@ enum winbindd_result winbindd_uid_to_sid(struct winbindd_cli_state *state)
{
DOM_SID sid;
-#if 0 /* JERRY */
- /* we cannot do this check this anymore since a domain member of
- a Samba domain may share unix accounts via NIS or LDAP. In this
- case the uid/gid will be out of winbindd's range but still might
- be resolved to a SID via an ldap idmap backend */
-
- if ((state->request.data.uid < server_state.uid_low ) ||
- (state->request.data.uid > server_state.uid_high)) {
- return WINBINDD_ERROR;
- }
-#endif
-
DEBUG(3, ("[%5lu]: uid to sid %lu\n", (unsigned long)state->pid,
(unsigned long)state->request.data.uid));
+ if ( (state->request.data.uid < server_state.uid_low )
+ || (state->request.data.uid > server_state.uid_high) )
+ {
+ struct passwd *pw = NULL;
+ enum SID_NAME_USE type;
+ unid_t id;
+ struct winbindd_domain *domain;
+
+ /* SPECIAL CASE FOR MEMBERS OF SAMBA DOMAINS */
+
+ /* if we don't trust /etc/password then when can't know
+ anything about this uid */
+
+ if ( !lp_winbind_trusted_domains_only() )
+ return WINBINDD_ERROR;
+
+
+ /* look for an idmap entry first */
+
+ if ( NT_STATUS_IS_OK(idmap_uid_to_sid(&sid, state->request.data.uid)) )
+ goto done;
+
+ /* if users exist in /etc/passwd, we should try to
+ use that uid. Get the username and the lookup the SID */
+
+ if ( !(pw = getpwuid(state->request.data.uid)) )
+ return WINBINDD_ERROR;
+
+ if ( !(domain = find_domain_from_name(lp_workgroup())) ) {
+ DEBUG(0,("winbindd_uid_to_sid: can't find my own domain!\n"));
+ return WINBINDD_ERROR;
+ }
+
+ if ( !winbindd_lookup_sid_by_name(domain, pw->pw_name, &sid, &type) )
+ return WINBINDD_ERROR;
+
+ if ( type != SID_NAME_USER )
+ return WINBINDD_ERROR;
+
+ /* don't fail if we can't store it */
+
+ id.uid = pw->pw_uid;
+ idmap_set_mapping( &sid, id, ID_USERID );
+
+ goto done;
+ }
+
/* Lookup rid for this uid */
+
if (!NT_STATUS_IS_OK(idmap_uid_to_sid(&sid, state->request.data.uid))) {
DEBUG(1, ("Could not convert uid %lu to rid\n",
(unsigned long)state->request.data.uid));
return WINBINDD_ERROR;
}
+done:
sid_to_string(state->response.data.sid.sid, &sid);
state->response.data.sid.type = SID_NAME_USER;
@@ -219,28 +373,64 @@ enum winbindd_result winbindd_gid_to_sid(struct winbindd_cli_state *state)
{
DOM_SID sid;
-#if 0 /* JERRY */
- /* we cannot do this check this anymore since a domain member of
- a Samba domain may share unix accounts via NIS or LDAP. In this
- case the uid/gid will be out of winbindd's range but still might
- be resolved to a SID via an ldap idmap backend */
-
- if ((state->request.data.gid < server_state.gid_low) ||
- (state->request.data.gid > server_state.gid_high)) {
- return WINBINDD_ERROR;
- }
-#endif
-
DEBUG(3, ("[%5lu]: gid to sid %lu\n", (unsigned long)state->pid,
(unsigned long)state->request.data.gid));
+
+ if ( (state->request.data.gid < server_state.gid_low)
+ || (state->request.data.gid > server_state.gid_high) )
+ {
+ struct group *grp = NULL;
+ enum SID_NAME_USE type;
+ unid_t id;
+ struct winbindd_domain *domain;
+
+ /* SPECIAL CASE FOR MEMBERS OF SAMBA DOMAINS */
+
+ /* if we don't trust /etc/group then when can't know
+ anything about this gid */
+
+ if ( !lp_winbind_trusted_domains_only() )
+ return WINBINDD_ERROR;
+
+ /* look for an idmap entry first */
+
+ if ( NT_STATUS_IS_OK(idmap_gid_to_sid(&sid, state->request.data.gid)) )
+ goto done;
+
+ /* if users exist in /etc/group, we should try to
+ use that gid. Get the username and the lookup the SID */
+
+ if ( !(grp = getgrgid(state->request.data.gid)) )
+ return WINBINDD_ERROR;
+
+ if ( !(domain = find_domain_from_name(lp_workgroup())) ) {
+ DEBUG(0,("winbindd_uid_to_sid: can't find my own domain!\n"));
+ return WINBINDD_ERROR;
+ }
+
+ if ( !winbindd_lookup_sid_by_name(domain, grp->gr_name, &sid, &type) )
+ return WINBINDD_ERROR;
+
+ if ( type!=SID_NAME_DOM_GRP && type!=SID_NAME_ALIAS )
+ return WINBINDD_ERROR;
+
+ /* don't fail if we can't store it */
+
+ id.gid = grp->gr_gid;
+ idmap_set_mapping( &sid, id, ID_GROUPID );
+
+ goto done;
+ }
/* Lookup sid for this uid */
+
if (!NT_STATUS_IS_OK(idmap_gid_to_sid(&sid, state->request.data.gid))) {
DEBUG(1, ("Could not convert gid %lu to sid\n",
(unsigned long)state->request.data.gid));
return WINBINDD_ERROR;
}
+done:
/* Construct sid and return it */
sid_to_string(state->response.data.sid.sid, &sid);
state->response.data.sid.type = SID_NAME_DOM_GRP;
generated by cgit (git 2.34.1) at 2024-07-09 21:52:30 +0000