/* Unix SMB/CIFS implementation. Winbind daemon - sid related functions Copyright (C) Tim Potter 2000 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 the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include "includes.h" #include "winbindd.h" #undef DBGC_CLASS #define DBGC_CLASS DBGC_WINBIND /* Convert a string */ static void lookupsid_recv(void *private_data, BOOL success, const char *dom_name, const char *name, enum lsa_SidType type); void winbindd_lookupsid(struct winbindd_cli_state *state) { DOM_SID sid; /* Ensure null termination */ state->request.data.sid[sizeof(state->request.data.sid)-1]='\0'; DEBUG(3, ("[%5lu]: lookupsid %s\n", (unsigned long)state->pid, state->request.data.sid)); if (!string_to_sid(&sid, state->request.data.sid)) { DEBUG(5, ("%s not a SID\n", state->request.data.sid)); request_error(state); return; } winbindd_lookupsid_async(state->mem_ctx, &sid, lookupsid_recv, state); } static void lookupsid_recv(void *private_data, BOOL success, const char *dom_name, const char *name, enum lsa_SidType type) { struct winbindd_cli_state *state = talloc_get_type_abort(private_data, struct winbindd_cli_state); if (!success) { DEBUG(5, ("lookupsid returned an error\n")); request_error(state); return; } fstrcpy(state->response.data.name.dom_name, dom_name); fstrcpy(state->response.data.name.name, name); state->response.data.name.type = type; request_ok(state); } /** * Look up the SID for a qualified name. **/ static void lookupname_recv(void *private_data, BOOL success, const DOM_SID *sid, enum lsa_SidType type); void winbindd_lookupname(struct winbindd_cli_state *state) { char *name_domain, *name_user; char *p; /* Ensure null termination */ state->request.data.name.dom_name[sizeof(state->request.data.name.dom_name)-1]='\0'; /* Ensure null termination */ state->request.data.name.name[sizeof(state->request.data.name.name)-1]='\0'; /* cope with the name being a fully qualified name */ p = strstr(state->request.data.name.name, lp_winbind_separator()); if (p) { *p = 0; name_domain = state->request.data.name.name; name_user = p+1; } else { name_domain = state->request.data.name.dom_name; name_user = state->request.data.name.name; } DEBUG(3, ("[%5lu]: lookupname %s%s%s\n", (unsigned long)state->pid, name_domain, lp_winbind_separator(), name_user)); winbindd_lookupname_async(state->mem_ctx, name_domain, name_user, lookupname_recv, WINBINDD_LOOKUPNAME, state); } static void lookupname_recv(void *private_data, BOOL success, const DOM_SID *sid, enum lsa_SidType type) { struct winbindd_cli_state *state = talloc_get_type_abort(private_data, struct winbindd_cli_state); if (!success) { DEBUG(5, ("lookupname returned an error\n")); request_error(state); return; } sid_to_string(state->response.data.sid.sid, sid); state->response.data.sid.type = type; request_ok(state); return; } void winbindd_lookuprids(struct winbindd_cli_state *state) { struct winbindd_domain *domain; DOM_SID domain_sid; /* Ensure null termination */ state->request.data.sid[sizeof(state->request.data.sid)-1]='\0'; DEBUG(10, ("lookup_rids: %s\n", state->request.data.sid)); if (!string_to_sid(&domain_sid, state->request.data.sid)) { DEBUG(5, ("Could not convert %s to SID\n", state->request.data.sid)); request_error(state); return; } domain = find_lookup_domain_from_sid(&domain_sid); if (domain == NULL) { DEBUG(10, ("Could not find domain for name %s\n", state->request.domain_name)); request_error(state); return; } sendto_domain(state, domain); } static struct winbindd_child static_idmap_child; void init_idmap_child(void) { setup_domain_child(NULL, &static_idmap_child, "idmap"); } struct winbindd_child *idmap_child(void) { return &static_idmap_child; } /* Convert a sid to a uid. We assume we only have one rid attached to the sid. */ static void sid2uid_recv(void *private_data, BOOL success, uid_t uid) { struct winbindd_cli_state *state = talloc_get_type_abort(private_data, struct winbindd_cli_state); if (!success) { DEBUG(5, ("Could not convert sid %s\n", state->request.data.sid)); request_error(state); return; } state->response.data.uid = uid; request_ok(state); } static void sid2uid_lookupsid_recv( void *private_data, BOOL success, const char *domain_name, const char *name, enum lsa_SidType type) { struct winbindd_cli_state *state = talloc_get_type_abort(private_data, struct winbindd_cli_state); DOM_SID sid; if (!success) { DEBUG(5, ("sid2uid_lookupsid_recv Could not convert get sid type for %s\n", state->request.data.sid)); request_error(state); return; } if ( (type!=SID_NAME_USER) && (type!=SID_NAME_COMPUTER) ) { DEBUG(5,("sid2uid_lookupsid_recv: Sid %s is not a user or a computer.\n", state->request.data.sid)); request_error(state); return; } if (!string_to_sid(&sid, state->request.data.sid)) { DEBUG(1, ("sid2uid_lookupsid_recv: Could not get convert sid %s from string\n", state->request.data.sid)); request_error(state); return; } /* always use the async interface (may block) */ winbindd_sid2uid_async(state->mem_ctx, &sid, sid2uid_recv, state); } void winbindd_sid_to_uid(struct winbindd_cli_state *state) { DOM_SID sid; /* Ensure null termination */ state->request.data.sid[sizeof(state->request.data.sid)-1]='\0'; DEBUG(3, ("[%5lu]: sid to uid %s\n", (unsigned long)state->pid, state->request.data.sid)); if (!string_to_sid(&sid, state->request.data.sid)) { DEBUG(1, ("Could not get convert sid %s from string\n", state->request.data.sid)); request_error(state); return; } /* Validate the SID as a user. Hopefully this will hit cache. Needed to prevent DoS by exhausting the uid allocation range from random SIDs. */ winbindd_lookupsid_async( state->mem_ctx, &sid, sid2uid_lookupsid_recv, state ); } /* Convert a sid to a gid. We assume we only have one rid attached to the sid.*/ static void sid2gid_recv(void *private_data, BOOL success, gid_t gid) { struct winbindd_cli_state *state = talloc_get_type_abort(private_data, struct winbindd_cli_state); if (!success) { DEBUG(5, ("Could not convert sid %s\n", state->request.data.sid)); request_error(state); return; } state->response.data.gid = gid; request_ok(state); } static void sid2gid_lookupsid_recv( void *private_data, BOOL success, const char *domain_name, const char *name, enum lsa_SidType type) { struct winbindd_cli_state *state = talloc_get_type_abort(private_data, struct winbindd_cli_state); DOM_SID sid; if (!success) { DEBUG(5, ("sid2gid_lookupsid_recv: Could not get sid type for %s\n", state->request.data.sid)); request_error(state); return; } if ( (type!=SID_NAME_DOM_GRP) && (type!=SID_NAME_ALIAS) && (type!=SID_NAME_WKN_GRP) ) { DEBUG(5,("sid2gid_lookupsid_recv: Sid %s is not a group.\n", state->request.data.sid)); request_error(state); return; } if (!string_to_sid(&sid, state->request.data.sid)) { DEBUG(1, ("sid2gid_lookupsid_recv: Could not get convert sid %s from string\n", state->request.data.sid)); request_error(state); return; } /* always use the async interface (may block) */ winbindd_sid2gid_async(state->mem_ctx, &sid, sid2gid_recv, state); } void winbindd_sid_to_gid(struct winbindd_cli_state *state) { DOM_SID sid; /* Ensure null termination */ state->request.data.sid[sizeof(state->request.data.sid)-1]='\0'; DEBUG(3, ("[%5lu]: sid to gid %s\n", (unsigned long)state->pid, state->request.data.sid)); if (!string_to_sid(&sid, state->request.data.sid)) { DEBUG(1, ("Could not get convert sid %s from string\n", state->request.data.sid)); request_error(state); return; } /* Validate the SID as a group. Hopefully this will hit cache. Needed to prevent DoS by exhausting the uid allocation range from random SIDs. */ winbindd_lookupsid_async( state->mem_ctx, &sid, sid2gid_lookupsid_recv, state ); } static void sids2xids_recv(void *private_data, BOOL success, void *data, int len) { struct winbindd_cli_state *state = talloc_get_type_abort(private_data, struct winbindd_cli_state); if (!success) { DEBUG(5, ("Could not convert sids to xids\n")); request_error(state); return; } state->response.extra_data.data = data; state->response.length = sizeof(state->response) + len; request_ok(state); } void winbindd_sids_to_unixids(struct winbindd_cli_state *state) { DEBUG(3, ("[%5lu]: sids to xids\n", (unsigned long)state->pid)); winbindd_sids2xids_async(state->mem_ctx, state->request.extra_data.data, state->request.extra_len, sids2xids_recv, state); } static void set_mapping_recv(void *private_data, BOOL success) { struct winbindd_cli_state *state = talloc_get_type_abort(private_data, struct winbindd_cli_state); if (!success) { DEBUG(5, ("Could not set sid mapping\n")); request_error(state); return; } request_ok(state); } void winbindd_set_mapping(struct winbindd_cli_state *state) { struct id_map map; DOM_SID sid; DEBUG(3, ("[%5lu]: set id map\n", (unsigned long)state->pid)); if ( ! state->privileged) { DEBUG(0, ("Only root is allowed to set mappings!\n")); request_error(state); return; } if (!string_to_sid(&sid, state->request.data.dual_idmapset.sid)) { DEBUG(1, ("Could not get convert sid %s from string\n", state->request.data.sid)); request_error(state); return; } map.sid = &sid; map.xid.id = state->request.data.dual_idmapset.id; map.xid.type = state->request.data.dual_idmapset.type; winbindd_set_mapping_async(state->mem_ctx, &map, set_mapping_recv, state); } static void set_hwm_recv(void *private_data, BOOL success) { struct winbindd_cli_state *state = talloc_get_type_abort(private_data, struct winbindd_cli_state); if (!success) { DEBUG(5, ("Could not set sid mapping\n")); request_error(state); return; } request_ok(state); } void winbindd_set_hwm(struct winbindd_cli_state *state) { struct unixid xid; DEBUG(3, ("[%5lu]: set hwm\n", (unsigned long)state->pid)); if ( ! state->privileged) { DEBUG(0, ("Only root is allowed to set mappings!\n")); request_error(state); return; } xid.id = state->request.data.dual_idmapset.id; xid.type = state->request.data.dual_idmapset.type; winbindd_set_hwm_async(state->mem_ctx, &xid, set_hwm_recv, state); } /* Convert a uid to a sid */ static void uid2sid_recv(void *private_data, BOOL success, const char *sid) { struct winbindd_cli_state *state = (struct winbindd_cli_state *)private_data; if (success) { DEBUG(10,("uid2sid: uid %lu has sid %s\n", (unsigned long)(state->request.data.uid), sid)); fstrcpy(state->response.data.sid.sid, sid); state->response.data.sid.type = SID_NAME_USER; request_ok(state); return; } request_error(state); return; } void winbindd_uid_to_sid(struct winbindd_cli_state *state) { DEBUG(3, ("[%5lu]: uid to sid %lu\n", (unsigned long)state->pid, (unsigned long)state->request.data.uid)); /* always go via the async interface (may block) */ winbindd_uid2sid_async(state->mem_ctx, state->request.data.uid, uid2sid_recv, state); } /* Convert a gid to a sid */ static void gid2sid_recv(void *private_data, BOOL success, const char *sid) { struct winbindd_cli_state *state = (struct winbindd_cli_state *)private_data; if (success) { DEBUG(10,("gid2sid: gid %lu has sid %s\n", (unsigned long)(state->request.data.gid), sid)); fstrcpy(state->response.data.sid.sid, sid); state->response.data.sid.type = SID_NAME_DOM_GRP; request_ok(state); return; } request_error(state); return; } void winbindd_gid_to_sid(struct winbindd_cli_state *state) { DEBUG(3, ("[%5lu]: gid to sid %lu\n", (unsigned long)state->pid, (unsigned long)state->request.data.gid)); /* always use async calls (may block) */ winbindd_gid2sid_async(state->mem_ctx, state->request.data.gid, gid2sid_recv, state); } void winbindd_allocate_uid(struct winbindd_cli_state *state) { if ( !state->privileged ) { DEBUG(2, ("winbindd_allocate_uid: non-privileged access " "denied!\n")); request_error(state); return; } sendto_child(state, idmap_child()); } enum winbindd_result winbindd_dual_allocate_uid(struct winbindd_domain *domain, struct winbindd_cli_state *state) { struct unixid xid; if (!NT_STATUS_IS_OK(idmap_allocate_uid(&xid))) { return WINBINDD_ERROR; } state->response.data.uid = xid.id; return WINBINDD_OK; } void winbindd_allocate_gid(struct winbindd_cli_state *state) { if ( !state->privileged ) { DEBUG(2, ("winbindd_allocate_gid: non-privileged access " "denied!\n")); request_error(state); return; } sendto_child(state, idmap_child()); } enum winbindd_result winbindd_dual_allocate_gid(struct winbindd_domain *domain, struct winbindd_cli_state *state) { struct unixid xid; if (!NT_STATUS_IS_OK(idmap_allocate_gid(&xid))) { return WINBINDD_ERROR; } state->response.data.gid = xid.id; return WINBINDD_OK; } static void dump_maps_recv(void *private_data, BOOL success) { struct winbindd_cli_state *state = talloc_get_type_abort(private_data, struct winbindd_cli_state); if (!success) { DEBUG(5, ("Could not dump maps\n")); request_error(state); return; } request_ok(state); } void winbindd_dump_maps(struct winbindd_cli_state *state) { if ( ! state->privileged) { DEBUG(0, ("Only root is allowed to ask for an idmap dump!\n")); request_error(state); return; } DEBUG(3, ("[%5lu]: dump maps\n", (unsigned long)state->pid)); winbindd_dump_maps_async(state->mem_ctx, state->request.extra_data.data, state->request.extra_len, dump_maps_recv, state); }