X-Git-Url: http://git.samba.org/?a=blobdiff_plain;f=source3%2Fnsswitch%2Fwinbindd_util.c;h=a6fd0a78707d18efbbc1e38864ea7e4d308e7cab;hb=5e54558c6dea67b56bbfaba5698f3a434d3dffb6;hp=efd84bbf73026e7c05ab66664d9b0d2265e6295e;hpb=2d6e5ad90fe358e0d1b94798819713316723125f;p=abartlet%2Fsamba.git%2F.git diff --git a/source3/nsswitch/winbindd_util.c b/source3/nsswitch/winbindd_util.c index efd84bbf730..a6fd0a78707 100644 --- a/source3/nsswitch/winbindd_util.c +++ b/source3/nsswitch/winbindd_util.c @@ -8,7 +8,7 @@ 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 2 of the License, or + 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, @@ -17,34 +17,24 @@ 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, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + along with this program. If not, see . */ #include "includes.h" #include "winbindd.h" -extern struct winbindd_methods cache_methods; -extern struct winbindd_methods passdb_methods; - #undef DBGC_CLASS #define DBGC_CLASS DBGC_WINBIND +extern struct winbindd_methods cache_methods; +extern struct winbindd_methods passdb_methods; + /** * @file winbindd_util.c * * Winbind daemon for NT domain authentication nss module. **/ - -/** - * Used to clobber name fields that have an undefined value. - * - * Correct code should never look at a field that has this value. - **/ - -static const fstring name_deadbeef = ""; - /* The list of trusted domains. Note that the list can be deleted and recreated using the init_domain_list() function so pointers to individual winbindd_domain structures cannot be made. Keep a copy of @@ -64,9 +54,9 @@ struct winbindd_domain *domain_list(void) { /* Initialise list */ - if (!_domain_list) - if (!init_domain_list()) - return NULL; + if ((!_domain_list) && (!init_domain_list())) { + smb_panic("Init_domain_list failed"); + } return _domain_list; } @@ -91,9 +81,23 @@ static BOOL is_internal_domain(const DOM_SID *sid) if (sid == NULL) return False; + if ( IS_DC ) + return sid_check_is_builtin(sid); + return (sid_check_is_domain(sid) || sid_check_is_builtin(sid)); } +static BOOL is_in_internal_domain(const DOM_SID *sid) +{ + if (sid == NULL) + return False; + + if ( IS_DC ) + return sid_check_is_in_builtin(sid); + + return (sid_check_is_in_our_domain(sid) || sid_check_is_in_builtin(sid)); +} + /* Add a trusted domain to our list of domains */ static struct winbindd_domain *add_trusted_domain(const char *domain_name, const char *alt_name, @@ -102,7 +106,6 @@ static struct winbindd_domain *add_trusted_domain(const char *domain_name, const { struct winbindd_domain *domain; const char *alternative_name = NULL; - static const DOM_SID null_sid; /* ignore alt_name if we are not in an AD domain */ @@ -114,24 +117,42 @@ static struct winbindd_domain *add_trusted_domain(const char *domain_name, const init_domain_list() and we'll get stuck in a loop. */ for (domain = _domain_list; domain; domain = domain->next) { if (strequal(domain_name, domain->name) || - strequal(domain_name, domain->alt_name)) { - return domain; + strequal(domain_name, domain->alt_name)) + { + break; } - if (alternative_name && *alternative_name) { + + if (alternative_name && *alternative_name) + { if (strequal(alternative_name, domain->name) || - strequal(alternative_name, domain->alt_name)) { - return domain; + strequal(alternative_name, domain->alt_name)) + { + break; } } - if (sid) { - if (sid_equal(sid, &null_sid) ) { + + if (sid) + { + if (is_null_sid(sid)) { + continue; + } - } else if (sid_equal(sid, &domain->sid)) { - return domain; + if (sid_equal(sid, &domain->sid)) { + break; } } } + /* See if we found a match. Check if we need to update the + SID. */ + + if ( domain ) { + if ( sid_equal( &domain->sid, &global_sid_NULL ) ) + sid_copy( &domain->sid, sid ); + + return domain; + } + /* Create new domain entry */ if ((domain = SMB_MALLOC_P(struct winbindd_domain)) == NULL) @@ -158,6 +179,8 @@ static struct winbindd_domain *add_trusted_domain(const char *domain_name, const domain->sequence_number = DOM_SEQUENCE_NONE; domain->last_seq_check = 0; domain->initialized = False; + domain->online = is_internal_domain(sid); + domain->check_online_timeout = 0; if (sid) { sid_copy(&domain->sid, sid); } @@ -165,6 +188,8 @@ static struct winbindd_domain *add_trusted_domain(const char *domain_name, const /* Link to domain list */ DLIST_ADD(_domain_list, domain); + wcache_tdc_add_domain( domain ); + DEBUG(2,("Added domain %s %s %s\n", domain->name, domain->alt_name, &domain->sid?sid_string_static(&domain->sid):"")); @@ -176,161 +201,573 @@ static struct winbindd_domain *add_trusted_domain(const char *domain_name, const rescan our domains looking for new trusted domains ********************************************************************/ +struct trustdom_state { + TALLOC_CTX *mem_ctx; + BOOL primary; + BOOL forest_root; + struct winbindd_response *response; +}; + +static void trustdom_recv(void *private_data, BOOL success); +static void rescan_forest_root_trusts( void ); +static void rescan_forest_trusts( void ); + static void add_trusted_domains( struct winbindd_domain *domain ) { TALLOC_CTX *mem_ctx; - NTSTATUS result; - time_t t; - char **names; - char **alt_names; - int num_domains = 0; - DOM_SID *dom_sids, null_sid; - int i; - struct winbindd_domain *new_domain; + struct winbindd_request *request; + struct winbindd_response *response; + uint32 fr_flags = (DS_DOMAIN_TREE_ROOT|DS_DOMAIN_IN_FOREST); + + struct trustdom_state *state; + + mem_ctx = talloc_init("add_trusted_domains"); + if (mem_ctx == NULL) { + DEBUG(0, ("talloc_init failed\n")); + return; + } - /* trusted domains might be disabled */ - if (!lp_allow_trusted_domains()) { + request = TALLOC_ZERO_P(mem_ctx, struct winbindd_request); + response = TALLOC_P(mem_ctx, struct winbindd_response); + state = TALLOC_P(mem_ctx, struct trustdom_state); + + if ((request == NULL) || (response == NULL) || (state == NULL)) { + DEBUG(0, ("talloc failed\n")); + talloc_destroy(mem_ctx); return; } - DEBUG(5, ("scanning trusted domain list\n")); + state->mem_ctx = mem_ctx; + state->response = response; + + /* Flags used to know how to continue the forest trust search */ - if (!(mem_ctx = talloc_init("init_domain_list"))) + state->primary = domain->primary; + state->forest_root = ((domain->domain_flags & fr_flags) == fr_flags ); + + request->length = sizeof(*request); + request->cmd = WINBINDD_LIST_TRUSTDOM; + + async_domain_request(mem_ctx, domain, request, response, + trustdom_recv, state); +} + +static void trustdom_recv(void *private_data, BOOL success) +{ + struct trustdom_state *state = + talloc_get_type_abort(private_data, struct trustdom_state); + struct winbindd_response *response = state->response; + char *p; + + if ((!success) || (response->result != WINBINDD_OK)) { + DEBUG(1, ("Could not receive trustdoms\n")); + talloc_destroy(state->mem_ctx); return; - - ZERO_STRUCTP(&null_sid); + } + + p = (char *)response->extra_data.data; - t = time(NULL); + while ((p != NULL) && (*p != '\0')) { + char *q, *sidstr, *alt_name; + DOM_SID sid; + struct winbindd_domain *domain; + char *alternate_name = NULL; + + alt_name = strchr(p, '\\'); + if (alt_name == NULL) { + DEBUG(0, ("Got invalid trustdom response\n")); + break; + } + + *alt_name = '\0'; + alt_name += 1; + + sidstr = strchr(alt_name, '\\'); + if (sidstr == NULL) { + DEBUG(0, ("Got invalid trustdom response\n")); + break; + } + + *sidstr = '\0'; + sidstr += 1; + + q = strchr(sidstr, '\n'); + if (q != NULL) + *q = '\0'; + + if (!string_to_sid(&sid, sidstr)) { + /* Allow NULL sid for sibling domains */ + if ( strcmp(sidstr,"S-0-0") == 0) { + sid_copy( &sid, &global_sid_NULL); + } else { + DEBUG(0, ("Got invalid trustdom response\n")); + break; + } + } + + /* use the real alt_name if we have one, else pass in NULL */ + + if ( !strequal( alt_name, "(null)" ) ) + alternate_name = alt_name; + + /* If we have an existing domain structure, calling + add_trusted_domain() will update the SID if + necessary. This is important because we need the + SID for sibling domains */ + + if ( find_domain_from_name_noinit(p) != NULL ) { + domain = add_trusted_domain(p, alternate_name, + &cache_methods, + &sid); + } else { + domain = add_trusted_domain(p, alternate_name, + &cache_methods, + &sid); + setup_domain_child(domain, &domain->child, NULL); + } + p=q; + if (p != NULL) + p += 1; + } + + SAFE_FREE(response->extra_data.data); + + /* + Cases to consider when scanning trusts: + (a) we are calling from a child domain (primary && !forest_root) + (b) we are calling from the root of the forest (primary && forest_root) + (c) we are calling from a trusted forest domain (!primary + && !forest_root) + */ + + if ( state->primary ) { + /* If this is our primary domain and we are not the in the + forest root, we have to scan the root trusts first */ + + if ( !state->forest_root ) + rescan_forest_root_trusts(); + else + rescan_forest_trusts(); + + } else if ( state->forest_root ) { + /* Once we have done root forest trust search, we can + go on to search thing trusted forests */ + + rescan_forest_trusts(); + } + + talloc_destroy(state->mem_ctx); - /* ask the DC what domains it trusts */ + return; +} + +/******************************************************************** + Scan the trusts of our forest root +********************************************************************/ + +static void rescan_forest_root_trusts( void ) +{ + struct winbindd_tdc_domain *dom_list = NULL; + size_t num_trusts = 0; + int i; + + /* The only transitive trusts supported by Windows 2003 AD are + (a) Parent-Child, (b) Tree-Root, and (c) Forest. The + first two are handled in forest and listed by + DsEnumerateDomainTrusts(). Forest trusts are not so we + have to do that ourselves. */ + + if ( !wcache_tdc_fetch_list( &dom_list, &num_trusts ) ) + return; + + for ( i=0; imethods->trusted_domains(domain, mem_ctx, (unsigned int *)&num_domains, - &names, &alt_names, &dom_sids); + /* Here's the forest root */ + + d = find_domain_from_name_noinit( dom_list[i].domain_name ); + + if ( !d ) { + d = add_trusted_domain( dom_list[i].domain_name, + dom_list[i].dns_name, + &cache_methods, + &dom_list[i].sid ); + } + + DEBUG(10,("rescan_forest_root_trusts: Following trust path " + "for domain tree root %s (%s)\n", + d->name, d->alt_name )); + + d->domain_flags = dom_list[i].trust_flags; + d->domain_type = dom_list[i].trust_type; + d->domain_trust_attribs = dom_list[i].trust_attribs; - if ( NT_STATUS_IS_OK(result) ) { + add_trusted_domains( d ); + + break; + } + + TALLOC_FREE( dom_list ); + + return; +} + +/******************************************************************** + scan the transitive forest trists (not our own) +********************************************************************/ + + +static void rescan_forest_trusts( void ) +{ + struct winbindd_domain *d = NULL; + struct winbindd_tdc_domain *dom_list = NULL; + size_t num_trusts = 0; + int i; + + /* The only transitive trusts supported by Windows 2003 AD are + (a) Parent-Child, (b) Tree-Root, and (c) Forest. The + first two are handled in forest and listed by + DsEnumerateDomainTrusts(). Forest trusts are not so we + have to do that ourselves. */ + + if ( !wcache_tdc_fetch_list( &dom_list, &num_trusts ) ) + return; - /* Add each domain to the trusted domain list */ + for ( i=0; imethods->domain_sid( new_domain, &new_domain->sid ); - - if ( NT_STATUS_IS_OK(result) ) - sid_copy( &dom_sids[i], &new_domain->sid ); + d = find_domain_from_name_noinit( dom_list[i].domain_name ); + + /* ignore our primary and internal domains */ + + if ( d && (d->internal || d->primary ) ) + continue; + + if ( (flags & DS_DOMAIN_DIRECT_INBOUND) && + (type == DS_DOMAIN_TRUST_TYPE_UPLEVEL) && + (attribs == DS_DOMAIN_TRUST_ATTRIB_FOREST_TRANSITIVE) ) + { + /* add the trusted domain if we don't know + about it */ + + if ( !d ) { + d = add_trusted_domain( dom_list[i].domain_name, + dom_list[i].dns_name, + &cache_methods, + &dom_list[i].sid ); } - /* store trusted domain in the cache */ - trustdom_cache_store(names[i], alt_names ? alt_names[i] : NULL, - &dom_sids[i], t + WINBINDD_RESCAN_FREQ); + DEBUG(10,("Following trust path for domain %s (%s)\n", + d->name, d->alt_name )); + add_trusted_domains( d ); } } - talloc_destroy(mem_ctx); + TALLOC_FREE( dom_list ); + + return; } -/******************************************************************** - Periodically we need to refresh the trusted domain cache for smbd -********************************************************************/ +/********************************************************************* + The process of updating the trusted domain list is a three step + async process: + (a) ask our domain + (b) ask the root domain in our forest + (c) ask the a DC in any Win2003 trusted forests +*********************************************************************/ void rescan_trusted_domains( void ) { time_t now = time(NULL); - struct winbindd_domain *mydomain = NULL; /* see if the time has come... */ - if ( (now > last_trustdom_scan) && ((now-last_trustdom_scan) < WINBINDD_RESCAN_FREQ) ) + if ((now >= last_trustdom_scan) && + ((now-last_trustdom_scan) < WINBINDD_RESCAN_FREQ) ) return; - if ( (mydomain = find_our_domain()) == NULL ) { - DEBUG(0,("rescan_trusted_domains: Can't find my own domain!\n")); - return; - } - - /* this will only add new domains we didn't already know about */ + /* clear the TRUSTDOM cache first */ + + wcache_tdc_clear(); + + /* this will only add new domains we didn't already know about + in the domain_list()*/ - add_trusted_domains( mydomain ); + add_trusted_domains( find_our_domain() ); last_trustdom_scan = now; return; } +struct init_child_state { + TALLOC_CTX *mem_ctx; + struct winbindd_domain *domain; + struct winbindd_request *request; + struct winbindd_response *response; + void (*continuation)(void *private_data, BOOL success); + void *private_data; +}; + +static void init_child_recv(void *private_data, BOOL success); +static void init_child_getdc_recv(void *private_data, BOOL success); + +enum winbindd_result init_child_connection(struct winbindd_domain *domain, + void (*continuation)(void *private_data, + BOOL success), + void *private_data) +{ + TALLOC_CTX *mem_ctx; + struct winbindd_request *request; + struct winbindd_response *response; + struct init_child_state *state; + struct winbindd_domain *request_domain; + + mem_ctx = talloc_init("init_child_connection"); + if (mem_ctx == NULL) { + DEBUG(0, ("talloc_init failed\n")); + return WINBINDD_ERROR; + } + + request = TALLOC_ZERO_P(mem_ctx, struct winbindd_request); + response = TALLOC_P(mem_ctx, struct winbindd_response); + state = TALLOC_P(mem_ctx, struct init_child_state); + + if ((request == NULL) || (response == NULL) || (state == NULL)) { + DEBUG(0, ("talloc failed\n")); + TALLOC_FREE(mem_ctx); + continuation(private_data, False); + return WINBINDD_ERROR; + } + + request->length = sizeof(*request); + + state->mem_ctx = mem_ctx; + state->domain = domain; + state->request = request; + state->response = response; + state->continuation = continuation; + state->private_data = private_data; + + if (IS_DC || domain->primary || domain->internal ) { + /* The primary domain has to find the DC name itself */ + request->cmd = WINBINDD_INIT_CONNECTION; + fstrcpy(request->domain_name, domain->name); + request->data.init_conn.is_primary = domain->internal ? False : True; + fstrcpy(request->data.init_conn.dcname, ""); + async_request(mem_ctx, &domain->child, request, response, + init_child_recv, state); + return WINBINDD_PENDING; + } + + /* This is *not* the primary domain, let's ask our DC about a DC + * name */ + + request->cmd = WINBINDD_GETDCNAME; + fstrcpy(request->domain_name, domain->name); + + request_domain = find_our_domain(); + async_domain_request(mem_ctx, request_domain, request, response, + init_child_getdc_recv, state); + return WINBINDD_PENDING; +} + +static void init_child_getdc_recv(void *private_data, BOOL success) +{ + struct init_child_state *state = + talloc_get_type_abort(private_data, struct init_child_state); + const char *dcname = ""; + + DEBUG(10, ("Received getdcname response\n")); + + if (success && (state->response->result == WINBINDD_OK)) { + dcname = state->response->data.dc_name; + } + + state->request->cmd = WINBINDD_INIT_CONNECTION; + fstrcpy(state->request->domain_name, state->domain->name); + state->request->data.init_conn.is_primary = False; + fstrcpy(state->request->data.init_conn.dcname, dcname); + + async_request(state->mem_ctx, &state->domain->child, + state->request, state->response, + init_child_recv, state); +} + +static void init_child_recv(void *private_data, BOOL success) +{ + struct init_child_state *state = + talloc_get_type_abort(private_data, struct init_child_state); + + DEBUG(5, ("Received child initialization response for domain %s\n", + state->domain->name)); + + if ((!success) || (state->response->result != WINBINDD_OK)) { + DEBUG(3, ("Could not init child\n")); + state->continuation(state->private_data, False); + talloc_destroy(state->mem_ctx); + return; + } + + fstrcpy(state->domain->name, + state->response->data.domain_info.name); + fstrcpy(state->domain->alt_name, + state->response->data.domain_info.alt_name); + string_to_sid(&state->domain->sid, + state->response->data.domain_info.sid); + state->domain->native_mode = + state->response->data.domain_info.native_mode; + state->domain->active_directory = + state->response->data.domain_info.active_directory; + state->domain->sequence_number = + state->response->data.domain_info.sequence_number; + + init_dc_connection(state->domain); + + if (state->continuation != NULL) + state->continuation(state->private_data, True); + talloc_destroy(state->mem_ctx); +} + +enum winbindd_result winbindd_dual_init_connection(struct winbindd_domain *domain, + struct winbindd_cli_state *state) +{ + /* Ensure null termination */ + state->request.domain_name + [sizeof(state->request.domain_name)-1]='\0'; + state->request.data.init_conn.dcname + [sizeof(state->request.data.init_conn.dcname)-1]='\0'; + + if (strlen(state->request.data.init_conn.dcname) > 0) { + fstrcpy(domain->dcname, state->request.data.init_conn.dcname); + } + + init_dc_connection(domain); + + if (!domain->initialized) { + /* If we return error here we can't do any cached authentication, + but we may be in disconnected mode and can't initialize correctly. + Do what the previous code did and just return without initialization, + once we go online we'll re-initialize. + */ + DEBUG(5, ("winbindd_dual_init_connection: %s returning without initialization " + "online = %d\n", domain->name, (int)domain->online )); + } + + fstrcpy(state->response.data.domain_info.name, domain->name); + fstrcpy(state->response.data.domain_info.alt_name, domain->alt_name); + fstrcpy(state->response.data.domain_info.sid, + sid_string_static(&domain->sid)); + + state->response.data.domain_info.native_mode + = domain->native_mode; + state->response.data.domain_info.active_directory + = domain->active_directory; + state->response.data.domain_info.primary + = domain->primary; + state->response.data.domain_info.sequence_number = + domain->sequence_number; + + return WINBINDD_OK; +} + /* Look up global info for the winbind daemon */ BOOL init_domain_list(void) { struct winbindd_domain *domain; + int role = lp_server_role(); /* Free existing list */ free_domain_list(); /* Add ourselves as the first entry. */ - if (IS_DC) { - domain = add_trusted_domain(get_global_sam_name(), NULL, - &passdb_methods, get_global_sam_sid()); - } else { + if ( role == ROLE_DOMAIN_MEMBER ) { + DOM_SID our_sid; + + if (!secrets_fetch_domain_sid(lp_workgroup(), &our_sid)) { + DEBUG(0, ("Could not fetch our SID - did we join?\n")); + return False; + } domain = add_trusted_domain( lp_workgroup(), lp_realm(), - &cache_methods, NULL); - - /* set flags about native_mode, active_directory */ - set_dc_type_and_flags(domain); + &cache_methods, &our_sid); + domain->primary = True; + setup_domain_child(domain, &domain->child, NULL); + + /* Even in the parent winbindd we'll need to + talk to the DC, so try and see if we can + contact it. Theoretically this isn't neccessary + as the init_dc_connection() in init_child_recv() + will do this, but we can start detecting the DC + early here. */ + set_domain_online_request(domain); + } + + /* Local SAM */ + + domain = add_trusted_domain(get_global_sam_name(), NULL, + &passdb_methods, get_global_sam_sid()); + if ( role != ROLE_DOMAIN_MEMBER ) { + domain->primary = True; } + setup_domain_child(domain, &domain->child, NULL); + + /* BUILTIN domain */ - domain->primary = True; + domain = add_trusted_domain("BUILTIN", NULL, &passdb_methods, + &global_sid_Builtin); + setup_domain_child(domain, &domain->child, NULL); - /* get any alternate name for the primary domain */ + return True; +} + +void check_domain_trusted( const char *name, const DOM_SID *user_sid ) +{ + struct winbindd_domain *domain; + DOM_SID dom_sid; + uint32 rid; - cache_methods.alternate_name(domain); + domain = find_domain_from_name_noinit( name ); + if ( domain ) + return; - /* now we have the correct netbios (short) domain name */ + sid_copy( &dom_sid, user_sid ); + if ( !sid_split_rid( &dom_sid, &rid ) ) + return; - if ( *domain->name ) - set_global_myworkgroup( domain->name ); - - if (!secrets_fetch_domain_sid(domain->name, &domain->sid)) { - DEBUG(1, ("Could not fetch sid for our domain %s\n", - domain->name)); - return False; - } + /* add the newly discovered trusted domain */ - /* do an initial scan for trusted domains */ - add_trusted_domains(domain); + domain = add_trusted_domain( name, NULL, &cache_methods, + &dom_sid); + if ( !domain ) + return; - /* Add our local SAM domains */ + /* assume this is a trust from a one-way transitive + forest trust */ - add_trusted_domain("BUILTIN", NULL, &passdb_methods, - &global_sid_Builtin); + domain->active_directory = True; + domain->domain_flags = DS_DOMAIN_DIRECT_OUTBOUND; + domain->domain_type = DS_DOMAIN_TRUST_TYPE_UPLEVEL; + domain->internal = False; + domain->online = True; - if (!IS_DC) { - add_trusted_domain(get_global_sam_name(), NULL, - &passdb_methods, get_global_sam_sid()); - } - - /* avoid rescanning this right away */ - last_trustdom_scan = time(NULL); - return True; + setup_domain_child(domain, &domain->child, NULL); + + wcache_tdc_add_domain( domain ); + + return; } /** @@ -345,7 +782,7 @@ BOOL init_domain_list(void) * @return The domain structure for the named domain, if it is working. */ -struct winbindd_domain *find_domain_from_name(const char *domain_name) +struct winbindd_domain *find_domain_from_name_noinit(const char *domain_name) { struct winbindd_domain *domain; @@ -353,10 +790,8 @@ struct winbindd_domain *find_domain_from_name(const char *domain_name) for (domain = domain_list(); domain != NULL; domain = domain->next) { if (strequal(domain_name, domain->name) || - (domain->alt_name[0] && strequal(domain_name, domain->alt_name))) { - if (!domain->initialized) - set_dc_type_and_flags(domain); - + (domain->alt_name[0] && + strequal(domain_name, domain->alt_name))) { return domain; } } @@ -366,20 +801,32 @@ struct winbindd_domain *find_domain_from_name(const char *domain_name) return NULL; } +struct winbindd_domain *find_domain_from_name(const char *domain_name) +{ + struct winbindd_domain *domain; + + domain = find_domain_from_name_noinit(domain_name); + + if (domain == NULL) + return NULL; + + if (!domain->initialized) + init_dc_connection(domain); + + return domain; +} + /* Given a domain sid, return the struct winbindd domain info for it */ -struct winbindd_domain *find_domain_from_sid(const DOM_SID *sid) +struct winbindd_domain *find_domain_from_sid_noinit(const DOM_SID *sid) { struct winbindd_domain *domain; /* Search through list */ for (domain = domain_list(); domain != NULL; domain = domain->next) { - if (sid_compare_domain(sid, &domain->sid) == 0) { - if (!domain->initialized) - set_dc_type_and_flags(domain); + if (sid_compare_domain(sid, &domain->sid) == 0) return domain; - } } /* Not found */ @@ -389,6 +836,21 @@ struct winbindd_domain *find_domain_from_sid(const DOM_SID *sid) /* Given a domain sid, return the struct winbindd domain info for it */ +struct winbindd_domain *find_domain_from_sid(const DOM_SID *sid) +{ + struct winbindd_domain *domain; + + domain = find_domain_from_sid_noinit(sid); + + if (domain == NULL) + return NULL; + + if (!domain->initialized) + init_dc_connection(domain); + + return domain; +} + struct winbindd_domain *find_our_domain(void) { struct winbindd_domain *domain; @@ -400,58 +862,104 @@ struct winbindd_domain *find_our_domain(void) return domain; } - /* Not found */ - + smb_panic("Could not find our domain"); return NULL; } +struct winbindd_domain *find_root_domain(void) +{ + struct winbindd_domain *ours = find_our_domain(); + + if ( !ours ) + return NULL; + + if ( strlen(ours->forest_name) == 0 ) + return NULL; + + return find_domain_from_name( ours->forest_name ); +} + +struct winbindd_domain *find_builtin_domain(void) +{ + DOM_SID sid; + struct winbindd_domain *domain; + + string_to_sid(&sid, "S-1-5-32"); + domain = find_domain_from_sid(&sid); + + if (domain == NULL) { + smb_panic("Could not find BUILTIN domain"); + } + + return domain; +} + /* Find the appropriate domain to lookup a name or SID */ struct winbindd_domain *find_lookup_domain_from_sid(const DOM_SID *sid) { + /* SIDs in the S-1-22-{1,2} domain should be handled by our passdb */ + + if ( sid_check_is_in_unix_groups(sid) || + sid_check_is_unix_groups(sid) || + sid_check_is_in_unix_users(sid) || + sid_check_is_unix_users(sid) ) + { + return find_domain_from_sid(get_global_sam_sid()); + } + /* A DC can't ask the local smbd for remote SIDs, here winbindd is the * one to contact the external DC's. On member servers the internal * domains are different: These are part of the local SAM. */ - if (IS_DC || is_internal_domain(sid)) + DEBUG(10, ("find_lookup_domain_from_sid(%s)\n", + sid_string_static(sid))); + + if (IS_DC || is_internal_domain(sid) || is_in_internal_domain(sid)) { + DEBUG(10, ("calling find_domain_from_sid\n")); return find_domain_from_sid(sid); + } /* On a member server a query for SID or name can always go to our * primary DC. */ + DEBUG(10, ("calling find_our_domain\n")); return find_our_domain(); } struct winbindd_domain *find_lookup_domain_from_name(const char *domain_name) { + if ( strequal(domain_name, unix_users_domain_name() ) || + strequal(domain_name, unix_groups_domain_name() ) ) + { + return find_domain_from_name_noinit( get_global_sam_name() ); + } + if (IS_DC || strequal(domain_name, "BUILTIN") || strequal(domain_name, get_global_sam_name())) - return find_domain_from_name(domain_name); + return find_domain_from_name_noinit(domain_name); + + /* The "Unix User" and "Unix Group" domain our handled by passdb */ return find_our_domain(); } /* Lookup a sid in a domain from a name */ -BOOL winbindd_lookup_sid_by_name(struct winbindd_domain *domain, +BOOL winbindd_lookup_sid_by_name(TALLOC_CTX *mem_ctx, + enum winbindd_cmd orig_cmd, + struct winbindd_domain *domain, const char *domain_name, const char *name, DOM_SID *sid, - enum SID_NAME_USE *type) + enum lsa_SidType *type) { NTSTATUS result; - TALLOC_CTX *mem_ctx; - mem_ctx = talloc_init("lookup_sid_by_name for %s\\%s\n", - domain_name, name); - if (!mem_ctx) - return False; - /* Lookup name */ - result = domain->methods->name_to_sid(domain, mem_ctx, domain_name, name, sid, type); + result = domain->methods->name_to_sid(domain, mem_ctx, orig_cmd, + domain_name, name, sid, type); - talloc_destroy(mem_ctx); - - /* Return rid and type if lookup successful */ + /* Return sid and type if lookup successful */ if (!NT_STATUS_IS_OK(result)) { *type = SID_NAME_UNKNOWN; } @@ -470,48 +978,33 @@ BOOL winbindd_lookup_sid_by_name(struct winbindd_domain *domain, * @retval True if the name exists, in which case @p name and @p type * are set, otherwise False. **/ -BOOL winbindd_lookup_name_by_sid(DOM_SID *sid, - fstring dom_name, - fstring name, - enum SID_NAME_USE *type) +BOOL winbindd_lookup_name_by_sid(TALLOC_CTX *mem_ctx, + struct winbindd_domain *domain, + DOM_SID *sid, + char **dom_name, + char **name, + enum lsa_SidType *type) { - char *names; - char *dom_names; NTSTATUS result; - TALLOC_CTX *mem_ctx; - BOOL rv = False; - struct winbindd_domain *domain; - domain = find_lookup_domain_from_sid(sid); - - if (!domain) { - DEBUG(1,("Can't find domain from sid\n")); - return False; - } + *dom_name = NULL; + *name = NULL; /* Lookup name */ - if (!(mem_ctx = talloc_init("winbindd_lookup_name_by_sid"))) - return False; - - result = domain->methods->sid_to_name(domain, mem_ctx, sid, &dom_names, &names, type); + result = domain->methods->sid_to_name(domain, mem_ctx, sid, dom_name, name, type); /* Return name and type if successful */ - if ((rv = NT_STATUS_IS_OK(result))) { - fstrcpy(dom_name, dom_names); - fstrcpy(name, names); - } else { - *type = SID_NAME_UNKNOWN; - fstrcpy(name, name_deadbeef); + if (NT_STATUS_IS_OK(result)) { + return True; } - - talloc_destroy(mem_ctx); - return rv; + *type = SID_NAME_UNKNOWN; + + return False; } - /* Free state information held for {set,get,end}{pw,gr}ent() functions */ void free_getent_state(struct getent_state *state) @@ -536,55 +1029,35 @@ void free_getent_state(struct getent_state *state) } } -/* Parse winbindd related parameters */ +/* Is this a domain which we may assume no DOMAIN\ prefix? */ -BOOL winbindd_param_init(void) +static BOOL assume_domain(const char *domain) { - /* Parse winbind uid and winbind_gid parameters */ + /* never assume the domain on a standalone server */ - if (!lp_idmap_uid(&server_state.uid_low, &server_state.uid_high)) { - DEBUG(2, ("winbindd: idmap uid range missing or invalid\n")); + if ( lp_server_role() == ROLE_STANDALONE ) return False; - } - - if (!lp_idmap_gid(&server_state.gid_low, &server_state.gid_high)) { - DEBUG(2, ("winbindd: idmap gid range missing or invalid\n")); - return False; - } - - return True; -} -/* Check if a domain is present in a comma-separated list of domains */ + /* domain member servers may possibly assume for the domain name */ -BOOL check_domain_env(char *domain_env, char *domain) -{ - fstring name; - const char *tmp = domain_env; + if ( lp_server_role() == ROLE_DOMAIN_MEMBER ) { + if ( !strequal(lp_workgroup(), domain) ) + return False; - while(next_token(&tmp, name, ",", sizeof(fstring))) { - if (strequal(name, domain)) + if ( lp_winbind_use_default_domain() || lp_winbind_trusted_domains_only() ) return True; - } - - return False; -} - -/* Is this a domain which we may assume no DOMAIN\ prefix? */ + } -static BOOL assume_domain(const char *domain) { - if ((lp_winbind_use_default_domain() - || lp_winbind_trusted_domains_only()) && - strequal(lp_workgroup(), domain)) - return True; + /* only left with a domain controller */ - if (strequal(get_global_sam_name(), domain)) + if ( strequal(get_global_sam_name(), domain) ) { return True; + } return False; } -/* Parse a string of the form DOMAIN/user into a domain and a user */ +/* Parse a string of the form DOMAIN\user into a domain and a user */ BOOL parse_domain_user(const char *domuser, fstring domain, fstring user) { @@ -592,14 +1065,13 @@ BOOL parse_domain_user(const char *domuser, fstring domain, fstring user) if ( !p ) { fstrcpy(user, domuser); - + if ( assume_domain(lp_workgroup())) { fstrcpy(domain, lp_workgroup()); } else { - fstrcpy( domain, get_global_sam_name() ); + return False; } - } - else { + } else { fstrcpy(user, p+1); fstrcpy(domain, domuser); domain[PTR_DIFF(p, domuser)] = 0; @@ -610,6 +1082,38 @@ BOOL parse_domain_user(const char *domuser, fstring domain, fstring user) return True; } +BOOL parse_domain_user_talloc(TALLOC_CTX *mem_ctx, const char *domuser, + char **domain, char **user) +{ + fstring fstr_domain, fstr_user; + if (!parse_domain_user(domuser, fstr_domain, fstr_user)) { + return False; + } + *domain = talloc_strdup(mem_ctx, fstr_domain); + *user = talloc_strdup(mem_ctx, fstr_user); + return ((*domain != NULL) && (*user != NULL)); +} + +/* Ensure an incoming username from NSS is fully qualified. Replace the + incoming fstring with DOMAIN user. Returns the same + values as parse_domain_user() but also replaces the incoming username. + Used to ensure all names are fully qualified within winbindd. + Used by the NSS protocols of auth, chauthtok, logoff and ccache_ntlm_auth. + The protocol definitions of auth_crap, chng_pswd_auth_crap + really should be changed to use this instead of doing things + by hand. JRA. */ + +BOOL canonicalize_username(fstring username_inout, fstring domain, fstring user) +{ + if (!parse_domain_user(username_inout, domain, user)) { + return False; + } + slprintf(username_inout, sizeof(fstring) - 1, "%s%c%s", + domain, *lp_winbind_separator(), + user); + return True; +} + /* Fill DOMAIN\\USERNAME entry accounting 'winbind use default domain' and 'winbind separator' options. @@ -621,18 +1125,22 @@ BOOL parse_domain_user(const char *domuser, fstring domain, fstring user) Also, if omit DOMAIN if 'winbind trusted domains only = true', as the username is then unqualified in unix - + + We always canonicalize as UPPERCASE DOMAIN, lowercase username. */ -void fill_domain_username(fstring name, const char *domain, const char *user) +void fill_domain_username(fstring name, const char *domain, const char *user, BOOL can_assume) { - strlower_m(CONST_DISCARD(char *, user)); + fstring tmp_user; - if (assume_domain(domain)) { - strlcpy(name, user, sizeof(fstring)); + fstrcpy(tmp_user, user); + strlower_m(tmp_user); + + if (can_assume && assume_domain(domain)) { + strlcpy(name, tmp_user, sizeof(fstring)); } else { slprintf(name, sizeof(fstring) - 1, "%s%c%s", domain, *lp_winbind_separator(), - user); + tmp_user); } } @@ -645,53 +1153,6 @@ char *get_winbind_priv_pipe_dir(void) return lock_path(WINBINDD_PRIV_SOCKET_SUBDIR); } -/* Open the winbindd socket */ - -static int _winbindd_socket = -1; -static int _winbindd_priv_socket = -1; - -int open_winbindd_socket(void) -{ - if (_winbindd_socket == -1) { - _winbindd_socket = create_pipe_sock( - WINBINDD_SOCKET_DIR, WINBINDD_SOCKET_NAME, 0755); - DEBUG(10, ("open_winbindd_socket: opened socket fd %d\n", - _winbindd_socket)); - } - - return _winbindd_socket; -} - -int open_winbindd_priv_socket(void) -{ - if (_winbindd_priv_socket == -1) { - _winbindd_priv_socket = create_pipe_sock( - get_winbind_priv_pipe_dir(), WINBINDD_SOCKET_NAME, 0750); - DEBUG(10, ("open_winbindd_priv_socket: opened socket fd %d\n", - _winbindd_priv_socket)); - } - - return _winbindd_priv_socket; -} - -/* Close the winbindd socket */ - -void close_winbindd_socket(void) -{ - if (_winbindd_socket != -1) { - DEBUG(10, ("close_winbindd_socket: closing socket fd %d\n", - _winbindd_socket)); - close(_winbindd_socket); - _winbindd_socket = -1; - } - if (_winbindd_priv_socket != -1) { - DEBUG(10, ("close_winbindd_socket: closing socket fd %d\n", - _winbindd_priv_socket)); - close(_winbindd_priv_socket); - _winbindd_priv_socket = -1; - } -} - /* * Client list accessor functions */ @@ -722,14 +1183,6 @@ void winbindd_remove_client(struct winbindd_cli_state *cli) _num_clients--; } -/* Demote a client to be the last in the list */ - -void winbindd_demote_client(struct winbindd_cli_state *cli) -{ - struct winbindd_cli_state *tmp; - DLIST_DEMOTE(_client_list, cli, tmp); -} - /* Close all open clients */ void winbindd_kill_all_clients(void) @@ -754,274 +1207,122 @@ int winbindd_num_clients(void) return _num_clients; } -/* Help with RID -> SID conversion */ - -DOM_SID *rid_to_talloced_sid(struct winbindd_domain *domain, - TALLOC_CTX *mem_ctx, - uint32 rid) +NTSTATUS lookup_usergroups_cached(struct winbindd_domain *domain, + TALLOC_CTX *mem_ctx, + const DOM_SID *user_sid, + uint32 *p_num_groups, DOM_SID **user_sids) { - DOM_SID *sid; - sid = TALLOC_P(mem_ctx, DOM_SID); - if (!sid) { - smb_panic("rid_to_to_talloced_sid: talloc for DOM_SID failed!\n"); - } - sid_copy(sid, &domain->sid); - sid_append_rid(sid, rid); - return sid; -} + NET_USER_INFO_3 *info3 = NULL; + NTSTATUS status = NT_STATUS_NO_MEMORY; + int i; + size_t num_groups = 0; + DOM_SID group_sid, primary_group; -/***************************************************************************** - For idmap conversion: convert one record to new format - Ancient versions (eg 2.2.3a) of winbindd_idmap.tdb mapped DOMAINNAME/rid - instead of the SID. -*****************************************************************************/ -static int convert_fn(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA data, void *state) -{ - struct winbindd_domain *domain; - char *p; - DOM_SID sid; - uint32 rid; - fstring keystr; - fstring dom_name; - TDB_DATA key2; - BOOL *failed = (BOOL *)state; - - DEBUG(10,("Converting %s\n", key.dptr)); - - p = strchr(key.dptr, '/'); - if (!p) - return 0; - - *p = 0; - fstrcpy(dom_name, key.dptr); - *p++ = '/'; - - domain = find_domain_from_name(dom_name); - if (domain == NULL) { - /* We must delete the old record. */ - DEBUG(0,("Unable to find domain %s\n", dom_name )); - DEBUG(0,("deleting record %s\n", key.dptr )); - - if (tdb_delete(tdb, key) != 0) { - DEBUG(0, ("Unable to delete record %s\n", key.dptr)); - *failed = True; - return -1; - } - - return 0; - } - - rid = atoi(p); - - sid_copy(&sid, &domain->sid); - sid_append_rid(&sid, rid); - - sid_to_string(keystr, &sid); - key2.dptr = keystr; - key2.dsize = strlen(keystr) + 1; + DEBUG(3,(": lookup_usergroups_cached\n")); + + *user_sids = NULL; + num_groups = 0; + *p_num_groups = 0; - if (tdb_store(tdb, key2, data, TDB_INSERT) != 0) { - DEBUG(0,("Unable to add record %s\n", key2.dptr )); - *failed = True; - return -1; - } + info3 = netsamlogon_cache_get(mem_ctx, user_sid); - if (tdb_store(tdb, data, key2, TDB_REPLACE) != 0) { - DEBUG(0,("Unable to update record %s\n", data.dptr )); - *failed = True; - return -1; + if (info3 == NULL) { + return NT_STATUS_OBJECT_NAME_NOT_FOUND; } - if (tdb_delete(tdb, key) != 0) { - DEBUG(0,("Unable to delete record %s\n", key.dptr )); - *failed = True; - return -1; + if (info3->num_groups == 0) { + TALLOC_FREE(info3); + return NT_STATUS_UNSUCCESSFUL; } - - return 0; -} - -/* These definitions are from sam/idmap_tdb.c. Replicated here just - out of laziness.... :-( */ - -/* High water mark keys */ -#define HWM_GROUP "GROUP HWM" -#define HWM_USER "USER HWM" - -/* idmap version determines auto-conversion */ -#define IDMAP_VERSION 2 - - -/***************************************************************************** - Convert the idmap database from an older version. -*****************************************************************************/ - -static BOOL idmap_convert(const char *idmap_name) -{ - int32 vers; - BOOL bigendianheader; - BOOL failed = False; - TDB_CONTEXT *idmap_tdb; - - if (!(idmap_tdb = tdb_open_log(idmap_name, 0, - TDB_DEFAULT, O_RDWR, - 0600))) { - DEBUG(0, ("idmap_convert: Unable to open idmap database\n")); - return False; + + /* always add the primary group to the sid array */ + sid_compose(&primary_group, &info3->dom_sid.sid, info3->user_rid); + + if (!add_sid_to_array(mem_ctx, &primary_group, user_sids, &num_groups)) { + TALLOC_FREE(info3); + return NT_STATUS_NO_MEMORY; } - bigendianheader = (idmap_tdb->flags & TDB_BIGENDIAN) ? True : False; - - vers = tdb_fetch_int32(idmap_tdb, "IDMAP_VERSION"); - - if (((vers == -1) && bigendianheader) || (IREV(vers) == IDMAP_VERSION)) { - /* Arrggghh ! Bytereversed or old big-endian - make order independent ! */ - /* - * high and low records were created on a - * big endian machine and will need byte-reversing. - */ - - int32 wm; - - wm = tdb_fetch_int32(idmap_tdb, HWM_USER); + for (i=0; inum_groups; i++) { + sid_copy(&group_sid, &info3->dom_sid.sid); + sid_append_rid(&group_sid, info3->gids[i].g_rid); - if (wm != -1) { - wm = IREV(wm); - } else { - wm = server_state.uid_low; - } - - if (tdb_store_int32(idmap_tdb, HWM_USER, wm) == -1) { - DEBUG(0, ("idmap_convert: Unable to byteswap user hwm in idmap database\n")); - tdb_close(idmap_tdb); - return False; - } - - wm = tdb_fetch_int32(idmap_tdb, HWM_GROUP); - if (wm != -1) { - wm = IREV(wm); - } else { - wm = server_state.gid_low; + if (!add_sid_to_array(mem_ctx, &group_sid, user_sids, + &num_groups)) { + TALLOC_FREE(info3); + return NT_STATUS_NO_MEMORY; } - - if (tdb_store_int32(idmap_tdb, HWM_GROUP, wm) == -1) { - DEBUG(0, ("idmap_convert: Unable to byteswap group hwm in idmap database\n")); - tdb_close(idmap_tdb); - return False; - } - } - - /* the old format stored as DOMAIN/rid - now we store the SID direct */ - tdb_traverse(idmap_tdb, convert_fn, &failed); - - if (failed) { - DEBUG(0, ("Problem during conversion\n")); - tdb_close(idmap_tdb); - return False; } - if (tdb_store_int32(idmap_tdb, "IDMAP_VERSION", IDMAP_VERSION) == -1) { - DEBUG(0, ("idmap_convert: Unable to dtore idmap version in databse\n")); - tdb_close(idmap_tdb); - return False; - } + TALLOC_FREE(info3); + *p_num_groups = num_groups; + status = (user_sids != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY; + + DEBUG(3,(": lookup_usergroups_cached succeeded\n")); - tdb_close(idmap_tdb); - return True; + return status; } -/***************************************************************************** - Convert the idmap database from an older version if necessary -*****************************************************************************/ +/********************************************************************* + We use this to remove spaces from user and group names +********************************************************************/ -BOOL winbindd_upgrade_idmap(void) +void ws_name_replace( char *name, char replace ) { - pstring idmap_name; - pstring backup_name; - SMB_STRUCT_STAT stbuf; - TDB_CONTEXT *idmap_tdb; - - pstrcpy(idmap_name, lock_path("winbindd_idmap.tdb")); + char replace_char[2] = { 0x0, 0x0 }; + + if ( !lp_winbind_normalize_names() || (replace == '\0') ) + return; - if (!file_exist(idmap_name, &stbuf)) { - /* nothing to convert return */ - return True; - } + replace_char[0] = replace; + all_string_sub( name, " ", replace_char, 0 ); - if (!(idmap_tdb = tdb_open_log(idmap_name, 0, - TDB_DEFAULT, O_RDWR, - 0600))) { - DEBUG(0, ("idmap_convert: Unable to open idmap database\n")); - return False; - } + return; +} - if (tdb_fetch_int32(idmap_tdb, "IDMAP_VERSION") == IDMAP_VERSION) { - /* nothing to convert return */ - tdb_close(idmap_tdb); - return True; - } +/********************************************************************* + We use this to do the inverse of ws_name_replace() +********************************************************************/ - /* backup_tdb expects the tdb not to be open */ - tdb_close(idmap_tdb); +void ws_name_return( char *name, char replace ) +{ + char replace_char[2] = { 0x0, 0x0 }; + + if ( !lp_winbind_normalize_names() || (replace == '\0') ) + return; + + replace_char[0] = replace; + all_string_sub( name, replace_char, " ", 0 ); - DEBUG(0, ("Upgrading winbindd_idmap.tdb from an old version\n")); + return; +} - pstrcpy(backup_name, idmap_name); - pstrcat(backup_name, ".bak"); +/********************************************************************* + ********************************************************************/ - if (backup_tdb(idmap_name, backup_name) != 0) { - DEBUG(0, ("Could not backup idmap database\n")); - return False; - } +BOOL winbindd_can_contact_domain( struct winbindd_domain *domain ) +{ + /* We can contact the domain if it is our primary domain */ - return idmap_convert(idmap_name); -} + if ( domain->primary ) + return True; -/******************************************************************* - wrapper around retrieving the trust account password -*******************************************************************/ + /* Can always contact a domain that is in out forest */ -BOOL get_trust_pw(const char *domain, uint8 ret_pwd[16], - time_t *pass_last_set_time, uint32 *channel) -{ - DOM_SID sid; - char *pwd; + if ( domain->domain_flags & DS_DOMAIN_IN_FOREST ) + return True; - /* if we are a DC and this is not our domain, then lookup an account - for the domain trust */ - - if ( IS_DC && !strequal(domain, lp_workgroup()) && lp_allow_trusted_domains() ) - { - if ( !secrets_fetch_trusted_domain_password(domain, &pwd, &sid, - pass_last_set_time) ) - { - DEBUG(0, ("get_trust_pw: could not fetch trust account " - "password for trusted domain %s\n", domain)); - return False; - } - - *channel = SEC_CHAN_DOMAIN; - E_md4hash(pwd, ret_pwd); - SAFE_FREE(pwd); + /* We cannot contact the domain if it is running AD and + we have no inbound trust */ - return True; - } - else /* just get the account for our domain (covers - ROLE_DOMAIN_MEMBER as well */ + if ( domain->active_directory && + ((domain->domain_flags&DS_DOMAIN_DIRECT_INBOUND) != DS_DOMAIN_DIRECT_INBOUND) ) { - /* get the machine trust account for our domain */ - - if ( !secrets_fetch_trust_account_password (lp_workgroup(), ret_pwd, - pass_last_set_time, channel) ) - { - DEBUG(0, ("get_trust_pw: could not fetch trust account " - "password for my domain %s\n", domain)); - return False; - } - - return True; + return False; } - /* Failure */ + /* Assume everything else is ok (probably not true but what + can you do?) */ + + return True; } -