diff options
Diffstat (limited to 'source/libads/ldap.c')
| -rw-r--r-- | source/libads/ldap.c | 1953 |
1 files changed, 0 insertions, 1953 deletions
diff --git a/source/libads/ldap.c b/source/libads/ldap.c deleted file mode 100644 index 2133bf0719d..00000000000 --- a/source/libads/ldap.c +++ /dev/null @@ -1,1953 +0,0 @@ -/* - Unix SMB/CIFS implementation. - ads (active directory) utility library - Copyright (C) Andrew Tridgell 2001 - Copyright (C) Remus Koos 2001 - Copyright (C) Jim McDonough 2002 - - 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 - (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, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ - -#include "includes.h" - -#ifdef HAVE_LDAP - -/** - * @file ldap.c - * @brief basic ldap client-side routines for ads server communications - * - * The routines contained here should do the necessary ldap calls for - * ads setups. - * - * Important note: attribute names passed into ads_ routines must - * already be in UTF-8 format. We do not convert them because in almost - * all cases, they are just ascii (which is represented with the same - * codepoints in UTF-8). This may have to change at some point - **/ - - -/* - try a connection to a given ldap server, returning True and setting the servers IP - in the ads struct if successful - */ -static BOOL ads_try_connect(ADS_STRUCT *ads, const char *server, unsigned port) -{ - char *srv; - - if (!server || !*server) { - return False; - } - - DEBUG(5,("ads_try_connect: trying ldap server '%s' port %u\n", server, port)); - - /* this copes with inet_ntoa brokenness */ - srv = strdup(server); - - ads->ld = ldap_open(srv, port); - if (!ads->ld) { - free(srv); - return False; - } - ads->ldap_port = port; - ads->ldap_ip = *interpret_addr2(srv); - free(srv); - - return True; -} - -/* - try a connection to a given ldap server, based on URL, returning True if successful - */ -static BOOL ads_try_connect_uri(ADS_STRUCT *ads) -{ -#if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000) - DEBUG(5,("ads_try_connect: trying ldap server at URI '%s'\n", - ads->server.ldap_uri)); - - - if (ldap_initialize((LDAP**)&(ads->ld), ads->server.ldap_uri) == LDAP_SUCCESS) { - return True; - } - DEBUG(0, ("ldap_initialize: %s\n", strerror(errno))); - -#else - - DEBUG(1, ("no URL support in LDAP libs!\n")); -#endif - - return False; -} - -/* used by the IP comparison function */ -struct ldap_ip { - struct in_addr ip; - unsigned port; -}; - -/* compare 2 ldap IPs by nearness to our interfaces - used in qsort */ -static int ldap_ip_compare(struct ldap_ip *ip1, struct ldap_ip *ip2) -{ - return ip_compare(&ip1->ip, &ip2->ip); -} - -/* try connecting to a ldap server via DNS */ -static BOOL ads_try_dns(ADS_STRUCT *ads) -{ - char *realm, *ptr; - char *list = NULL; - pstring tok; - struct ldap_ip *ip_list; - int count, i=0; - - realm = ads->server.realm; - if (!realm || !*realm) { - realm = lp_realm(); - } - if (!realm || !*realm) { - realm = ads->server.workgroup; - } - if (!realm || !*realm) { - realm = lp_workgroup(); - } - if (!realm) { - return False; - } - realm = smb_xstrdup(realm); - - DEBUG(6,("ads_try_dns: looking for realm '%s'\n", realm)); - if (ldap_domain2hostlist(realm, &list) != LDAP_SUCCESS) { - SAFE_FREE(realm); - return False; - } - - DEBUG(6,("ads_try_dns: ldap realm '%s' host list '%s'\n", realm, list)); - SAFE_FREE(realm); - - count = count_chars(list, ' ') + 1; - ip_list = malloc(count * sizeof(struct ldap_ip)); - if (!ip_list) { - return False; - } - - ptr = list; - while (next_token(&ptr, tok, " ", sizeof(tok))) { - unsigned port = LDAP_PORT; - char *p = strchr(tok, ':'); - if (p) { - *p = 0; - port = atoi(p+1); - } - ip_list[i].ip = *interpret_addr2(tok); - ip_list[i].port = port; - if (!is_zero_ip(ip_list[i].ip)) { - i++; - } - } - free(list); - - count = i; - - /* we sort the list of addresses by closeness to our interfaces. This - tries to prevent us using a DC on the other side of the country */ - if (count > 1) { - qsort(ip_list, count, sizeof(struct ldap_ip), - QSORT_CAST ldap_ip_compare); - } - - for (i=0;i<count;i++) { - if (ads_try_connect(ads, inet_ntoa(ip_list[i].ip), ip_list[i].port)) { - free(ip_list); - return True; - } - } - - SAFE_FREE(ip_list); - return False; -} - -/* try connecting to a ldap server via netbios */ -static BOOL ads_try_netbios(ADS_STRUCT *ads) -{ - struct in_addr *ip_list; - int count; - int i; - char *workgroup = ads->server.workgroup; - - if (!workgroup) { - workgroup = lp_workgroup(); - } - - DEBUG(6,("ads_try_netbios: looking for workgroup '%s'\n", workgroup)); - - /* try the PDC first */ - if (get_dc_list(True, workgroup, &ip_list, &count)) { - for (i=0;i<count;i++) { - DEBUG(6,("ads_try_netbios: trying server '%s'\n", - inet_ntoa(ip_list[i]))); - if (ads_try_connect(ads, inet_ntoa(ip_list[i]), LDAP_PORT)) { - free(ip_list); - return True; - } - } - free(ip_list); - } - - /* now any DC, including backups */ - if (get_dc_list(False, workgroup, &ip_list, &count)) { - for (i=0;i<count;i++) { - DEBUG(6,("ads_try_netbios: trying server '%s'\n", - inet_ntoa(ip_list[i]))); - if (ads_try_connect(ads, inet_ntoa(ip_list[i]), LDAP_PORT)) { - free(ip_list); - return True; - } - } - free(ip_list); - } - - return False; -} - -/** - * Connect to the LDAP server - * @param ads Pointer to an existing ADS_STRUCT - * @return status of connection - **/ -ADS_STATUS ads_connect(ADS_STRUCT *ads) -{ - int version = LDAP_VERSION3; - ADS_STATUS status; - - ads->last_attempt = time(NULL); - ads->ld = NULL; - - /* try with a URL based server */ - - if (ads->server.ldap_uri && - ads_try_connect_uri(ads)) { - goto got_connection; - } - - /* try with a user specified server */ - if (ads->server.ldap_server && - ads_try_connect(ads, ads->server.ldap_server, LDAP_PORT)) { - goto got_connection; - } - - /* try with a smb.conf ads server setting if we are connecting - to the primary workgroup or realm */ - if (!ads->server.foreign && - ads_try_connect(ads, lp_ads_server(), LDAP_PORT)) { - goto got_connection; - } - - /* try via DNS */ - if (ads_try_dns(ads)) { - goto got_connection; - } - - /* try via netbios lookups */ - if (!lp_disable_netbios() && ads_try_netbios(ads)) { - goto got_connection; - } - - return ADS_ERROR_SYSTEM(errno?errno:ENOENT); - -got_connection: - DEBUG(3,("Connected to LDAP server %s\n", inet_ntoa(ads->ldap_ip))); - - status = ads_server_info(ads); - if (!ADS_ERR_OK(status)) { - DEBUG(1,("Failed to get ldap server info\n")); - return status; - } - - ldap_set_option(ads->ld, LDAP_OPT_PROTOCOL_VERSION, &version); - - if (!ads->auth.user_name) { - /* by default use the machine account */ - extern pstring global_myname; - fstring myname; - fstrcpy(myname, global_myname); - strlower(myname); - asprintf(&ads->auth.user_name, "HOST/%s", myname); - } - - if (!ads->auth.realm) { - ads->auth.realm = strdup(ads->config.realm); - } - - if (!ads->auth.kdc_server) { - ads->auth.kdc_server = strdup(inet_ntoa(ads->ldap_ip)); - } - -#if KRB5_DNS_HACK - /* this is a really nasty hack to avoid ADS DNS problems. It needs a patch - to MIT kerberos to work (tridge) */ - { - char *env; - asprintf(&env, "KRB5_KDC_ADDRESS_%s", ads->config.realm); - setenv(env, ads->auth.kdc_server, 1); - free(env); - } -#endif - - if (ads->auth.flags & ADS_AUTH_NO_BIND) { - return ADS_SUCCESS; - } - - if (ads->auth.flags & ADS_AUTH_ANON_BIND) { - return ADS_ERROR(ldap_simple_bind_s( ads->ld, NULL, NULL)); - } - - if (ads->auth.flags & ADS_AUTH_SIMPLE_BIND) { - return ADS_ERROR(ldap_simple_bind_s( ads->ld, ads->auth.user_name, ads->auth.password)); - } - - return ads_sasl_bind(ads); -} - -/* - Duplicate a struct berval into talloc'ed memory - */ -static struct berval *dup_berval(TALLOC_CTX *ctx, const struct berval *in_val) -{ - struct berval *value; - - if (!in_val) return NULL; - - value = talloc_zero(ctx, sizeof(struct berval)); - if (in_val->bv_len == 0) return value; - - value->bv_len = in_val->bv_len; - value->bv_val = talloc_memdup(ctx, in_val->bv_val, in_val->bv_len); - return value; -} - -/* - Make a values list out of an array of (struct berval *) - */ -static struct berval **ads_dup_values(TALLOC_CTX *ctx, - const struct berval **in_vals) -{ - struct berval **values; - int i; - - if (!in_vals) return NULL; - for (i=0; in_vals[i]; i++); /* count values */ - values = (struct berval **) talloc_zero(ctx, - (i+1)*sizeof(struct berval *)); - if (!values) return NULL; - - for (i=0; in_vals[i]; i++) { - values[i] = dup_berval(ctx, in_vals[i]); - } - return values; -} - -/* - UTF8-encode a values list out of an array of (char *) - */ -static char **ads_push_strvals(TALLOC_CTX *ctx, const char **in_vals) -{ - char **values; - int i; - - if (!in_vals) return NULL; - for (i=0; in_vals[i]; i++); /* count values */ - values = (char ** ) talloc_zero(ctx, (i+1)*sizeof(char *)); - if (!values) return NULL; - - for (i=0; in_vals[i]; i++) { - push_utf8_talloc(ctx, &values[i], in_vals[i]); - } - return values; -} - -/* - Pull a (char *) array out of a UTF8-encoded values list - */ -static char **ads_pull_strvals(TALLOC_CTX *ctx, const char **in_vals) -{ - char **values; - int i; - - if (!in_vals) return NULL; - for (i=0; in_vals[i]; i++); /* count values */ - values = (char **) talloc_zero(ctx, (i+1)*sizeof(char *)); - if (!values) return NULL; - - for (i=0; in_vals[i]; i++) { - pull_utf8_talloc(ctx, &values[i], in_vals[i]); - } - return values; -} - -/** - * Do a search with paged results. cookie must be null on the first - * call, and then returned on each subsequent call. It will be null - * again when the entire search is complete - * @param ads connection to ads server - * @param bind_path Base dn for the search - * @param scope Scope of search (LDAP_BASE | LDAP_ONE | LDAP_SUBTREE) - * @param exp Search expression - specified in local charset - * @param attrs Attributes to retrieve - specified in utf8 or ascii - * @param res ** which will contain results - free res* with ads_msgfree() - * @param count Number of entries retrieved on this page - * @param cookie The paged results cookie to be returned on subsequent calls - * @return status of search - **/ -ADS_STATUS ads_do_paged_search(ADS_STRUCT *ads, const char *bind_path, - int scope, const char *exp, - const char **attrs, void **res, - int *count, void **cookie) -{ - int rc, i, version; - char *utf8_exp, *utf8_path, **search_attrs; - LDAPControl PagedResults, NoReferrals, *controls[3], **rcontrols; - BerElement *cookie_be = NULL; - struct berval *cookie_bv= NULL; - TALLOC_CTX *ctx; - - *res = NULL; - - if (!(ctx = talloc_init())) - return ADS_ERROR(LDAP_NO_MEMORY); - - /* 0 means the conversion worked but the result was empty - so we only fail if it's negative. In any case, it always - at least nulls out the dest */ - if ((push_utf8_talloc(ctx, &utf8_exp, exp) < 0) || - (push_utf8_talloc(ctx, &utf8_path, bind_path) < 0)) { - rc = LDAP_NO_MEMORY; - goto done; - } - - if (!attrs || !(*attrs)) - search_attrs = NULL; - else { - /* This would be the utf8-encoded version...*/ - /* if (!(search_attrs = ads_push_strvals(ctx, attrs))) */ - if (!(str_list_copy(&search_attrs, attrs))) - { - rc = LDAP_NO_MEMORY; - goto done; - } - } - - - /* Paged results only available on ldap v3 or later */ - ldap_get_option(ads->ld, LDAP_OPT_PROTOCOL_VERSION, &version); - if (version < LDAP_VERSION3) { - rc = LDAP_NOT_SUPPORTED; - goto done; - } - - cookie_be = ber_alloc_t(LBER_USE_DER); - if (cookie && *cookie) { - ber_printf(cookie_be, "{iO}", (ber_int_t) 1000, *cookie); - ber_bvfree(*cookie); /* don't need it from last time */ - *cookie = NULL; - } else { - ber_printf(cookie_be, "{io}", (ber_int_t) 1000, "", 0); - } - ber_flatten(cookie_be, &cookie_bv); - PagedResults.ldctl_oid = ADS_PAGE_CTL_OID; - PagedResults.ldctl_iscritical = (char) 1; - PagedResults.ldctl_value.bv_len = cookie_bv->bv_len; - PagedResults.ldctl_value.bv_val = cookie_bv->bv_val; - - NoReferrals.ldctl_oid = ADS_NO_REFERRALS_OID; - NoReferrals.ldctl_iscritical = (char) 0; - NoReferrals.ldctl_value.bv_len = 0; - NoReferrals.ldctl_value.bv_val = ""; - - - controls[0] = &NoReferrals; - controls[1] = &PagedResults; - controls[2] = NULL; - - *res = NULL; - - /* we need to disable referrals as the openldap libs don't - handle them and paged results at the same time. Using them - together results in the result record containing the server - page control being removed from the result list (tridge/jmcd) - - leaving this in despite the control that says don't generate - referrals, in case the server doesn't support it (jmcd) - */ - ldap_set_option(ads->ld, LDAP_OPT_REFERRALS, LDAP_OPT_OFF); - - rc = ldap_search_ext_s(ads->ld, utf8_path, scope, utf8_exp, - search_attrs, 0, controls, - NULL, NULL, LDAP_NO_LIMIT, (LDAPMessage **)res); - - ber_free(cookie_be, 1); - ber_bvfree(cookie_bv); - - if (rc) { - DEBUG(3,("ldap_search_ext_s(%s) -> %s\n", exp, ldap_err2string(rc))); - goto done; - } - - rc = ldap_parse_result(ads->ld, *res, NULL, NULL, NULL, - NULL, &rcontrols, 0); - - if (!rcontrols) { - goto done; - } - - for (i=0; rcontrols[i]; i++) { - if (strcmp(ADS_PAGE_CTL_OID, rcontrols[i]->ldctl_oid) == 0) { - cookie_be = ber_init(&rcontrols[i]->ldctl_value); - ber_scanf(cookie_be,"{iO}", (ber_int_t *) count, - &cookie_bv); - /* the berval is the cookie, but must be freed when - it is all done */ - if (cookie_bv->bv_len) /* still more to do */ - *cookie=ber_bvdup(cookie_bv); - else - *cookie=NULL; - ber_bvfree(cookie_bv); - ber_free(cookie_be, 1); - break; - } - } - ldap_controls_free(rcontrols); - -done: - talloc_destroy(ctx); - /* if/when we decide to utf8-encode attrs, take out this next line */ - str_list_free(&search_attrs); - - return ADS_ERROR(rc); -} - - -/** - * Get all results for a search. This uses ads_do_paged_search() to return - * all entries in a large search. - * @param ads connection to ads server - * @param bind_path Base dn for the search - * @param scope Scope of search (LDAP_BASE | LDAP_ONE | LDAP_SUBTREE) - * @param exp Search expression - * @param attrs Attributes to retrieve - * @param res ** which will contain results - free res* with ads_msgfree() - * @return status of search - **/ -ADS_STATUS ads_do_search_all(ADS_STRUCT *ads, const char *bind_path, - int scope, const char *exp, - const char **attrs, void **res) -{ - void *cookie = NULL; - int count = 0; - ADS_STATUS status; - - status = ads_do_paged_search(ads, bind_path, scope, exp, attrs, res, - &count, &cookie); - - if (!ADS_ERR_OK(status)) return status; - - while (cookie) { - void *res2 = NULL; - ADS_STATUS status2; - LDAPMessage *msg, *next; - - status2 = ads_do_paged_search(ads, bind_path, scope, exp, - attrs, &res2, &count, &cookie); - - if (!ADS_ERR_OK(status2)) break; - - /* this relies on the way that ldap_add_result_entry() works internally. I hope - that this works on all ldap libs, but I have only tested with openldap */ - for (msg = ads_first_entry(ads, res2); msg; msg = next) { - next = ads_next_entry(ads, msg); - ldap_add_result_entry((LDAPMessage **)res, msg); - } - /* note that we do not free res2, as the memory is now - part of the main returned list */ - } - - return status; -} - -/** - * Run a function on all results for a search. Uses ads_do_paged_search() and - * runs the function as each page is returned, using ads_process_results() - * @param ads connection to ads server - * @param bind_path Base dn for the search - * @param scope Scope of search (LDAP_BASE | LDAP_ONE | LDAP_SUBTREE) - * @param exp Search expression - specified in local charset - * @param attrs Attributes to retrieve - specified in UTF-8 or ascii - * @param fn Function which takes attr name, values list, and data_area - * @param data_area Pointer which is passed to function on each call - * @return status of search - **/ -ADS_STATUS ads_do_search_all_fn(ADS_STRUCT *ads, const char *bind_path, - int scope, const char *exp, const char **attrs, - BOOL(*fn)(char *, void **, void *), - void *data_area) -{ - void *cookie = NULL; - int count = 0; - ADS_STATUS status; - void *res; - - status = ads_do_paged_search(ads, bind_path, scope, exp, attrs, &res, - &count, &cookie); - - if (!ADS_ERR_OK(status)) return status; - - ads_process_results(ads, res, fn, data_area); - ads_msgfree(ads, res); - - while (cookie) { - status = ads_do_paged_search(ads, bind_path, scope, exp, attrs, - &res, &count, &cookie); - - if (!ADS_ERR_OK(status)) break; - - ads_process_results(ads, res, fn, data_area); - ads_msgfree(ads, res); - } - - return status; -} - -/** - * Do a search with a timeout. - * @param ads connection to ads server - * @param bind_path Base dn for the search - * @param scope Scope of search (LDAP_BASE | LDAP_ONE | LDAP_SUBTREE) - * @param exp Search expression - * @param attrs Attributes to retrieve - * @param res ** which will contain results - free res* with ads_msgfree() - * @return status of search - **/ -ADS_STATUS ads_do_search(ADS_STRUCT *ads, const char *bind_path, int scope, - const char *exp, - const char **attrs, void **res) -{ - struct timeval timeout; - int rc; - char *utf8_exp, *utf8_path, **search_attrs = NULL; - TALLOC_CTX *ctx; - - if (!(ctx = talloc_init())) { - DEBUG(1,("ads_do_search: talloc_init() failed!")); - return ADS_ERROR(LDAP_NO_MEMORY); - } - - /* 0 means the conversion worked but the result was empty - so we only fail if it's negative. In any case, it always - at least nulls out the dest */ - if ((push_utf8_talloc(ctx, &utf8_exp, exp) < 0) || - (push_utf8_talloc(ctx, &utf8_path, bind_path) < 0)) { - DEBUG(1,("ads_do_search: push_utf8_talloc() failed!")); - rc = LDAP_NO_MEMORY; - goto done; - } - - if (!attrs || !(*attrs)) - search_attrs = NULL; - else { - /* This would be the utf8-encoded version...*/ - /* if (!(search_attrs = ads_push_strvals(ctx, attrs))) */ - if (!(str_list_copy(&search_attrs, attrs))) - { - DEBUG(1,("ads_do_search: str_list_copy() failed!")); - rc = LDAP_NO_MEMORY; - goto done; - } - } - - timeout.tv_sec = ADS_SEARCH_TIMEOUT; - timeout.tv_usec = 0; - *res = NULL; - - /* see the note in ads_do_paged_search - we *must* disable referrals */ - ldap_set_option(ads->ld, LDAP_OPT_REFERRALS, LDAP_OPT_OFF); - - rc = ldap_search_ext_s(ads->ld, utf8_path, scope, utf8_exp, - search_attrs, 0, NULL, NULL, - &timeout, LDAP_NO_LIMIT, (LDAPMessage **)res); - - if (rc == LDAP_SIZELIMIT_EXCEEDED) { - DEBUG(3,("Warning! sizelimit exceeded in ldap. Truncating.\n")); - rc = 0; - } - - done: - talloc_destroy(ctx); - /* if/when we decide to utf8-encode attrs, take out this next line */ - str_list_free(&search_attrs); - return ADS_ERROR(rc); -} -/** - * Do a general ADS search - * @param ads connection to ads server - * @param res ** which will contain results - free res* with ads_msgfree() - * @param exp Search expression - * @param attrs Attributes to retrieve - * @return status of search - **/ -ADS_STATUS ads_search(ADS_STRUCT *ads, void **res, - const char *exp, - const char **attrs) -{ - return ads_do_search(ads, ads->config.bind_path, LDAP_SCOPE_SUBTREE, - exp, attrs, res); -} - -/** - * Do a search on a specific DistinguishedName - * @param ads connection to ads server - * @param res ** which will contain results - free res* with ads_msgfree() - * @param dn DistinguishName to search - * @param attrs Attributes to retrieve - * @return status of search - **/ -ADS_STATUS ads_search_dn(ADS_STRUCT *ads, void **res, - const char *dn, - const char **attrs) -{ - return ads_do_search(ads, dn, LDAP_SCOPE_BASE, "(objectclass=*)", attrs, res); -} - -/** - * Free up memory from a ads_search - * @param ads connection to ads server - * @param msg Search results to free - **/ -void ads_msgfree(ADS_STRUCT *ads, void *msg) -{ - if (!msg) return; - ldap_msgfree(msg); -} - -/** - * Free up memory from various ads requests - * @param ads connection to ads server - * @param mem Area to free - **/ -void ads_memfree(ADS_STRUCT *ads, void *mem) -{ - SAFE_FREE(mem); -} - -/** - * Get a dn from search results - * @param ads connection to ads server - * @param res Search results - * @return dn string - **/ -char *ads_get_dn(ADS_STRUCT *ads, void *res) -{ - char *utf8_dn, *unix_dn; - - utf8_dn = ldap_get_dn(ads->ld, res); - pull_utf8_allocate((void **) &unix_dn, utf8_dn); - ldap_memfree(utf8_dn); - return unix_dn; -} - -/** - * Find a machine account given a hostname - * @param ads connection to ads server - * @param res ** which will contain results - free res* with ads_msgfree() - * @param host Hostname to search for - * @return status of search - **/ -ADS_STATUS ads_find_machine_acct(ADS_STRUCT *ads, void **res, const char *host) -{ - ADS_STATUS status; - char *exp; - const char *attrs[] = {"*", "nTSecurityDescriptor", NULL}; - - /* the easiest way to find a machine account anywhere in the tree - is to look for hostname$ */ - if (asprintf(&exp, "(samAccountName=%s$)", host) == -1) { - DEBUG(1, ("asprintf failed!\n")); - return ADS_ERROR_NT(NT_STATUS_NO_MEMORY); - } - - status = ads_search(ads, res, exp, attrs); - free(exp); - return status; -} - -/** - * Initialize a list of mods to be used in a modify request - * @param ctx An initialized TALLOC_CTX - * @return allocated ADS_MODLIST - **/ -ADS_MODLIST ads_init_mods(TALLOC_CTX *ctx) -{ -#define ADS_MODLIST_ALLOC_SIZE 10 - LDAPMod **mods; - - if ((mods = (LDAPMod **) talloc_zero(ctx, sizeof(LDAPMod *) * - (ADS_MODLIST_ALLOC_SIZE + 1)))) - /* -1 is safety to make sure we don't go over the end. - need to reset it to NULL before doing ldap modify */ - mods[ADS_MODLIST_ALLOC_SIZE] = (LDAPMod *) -1; - - return mods; -} - - -/* - add an attribute to the list, with values list already constructed -*/ -static ADS_STATUS ads_modlist_add(TALLOC_CTX *ctx, ADS_MODLIST *mods, - int mod_op, const char *name, - const void **invals) -{ - int curmod; - LDAPMod **modlist = (LDAPMod **) *mods; - void **values; - - if (!invals) { - values = NULL; - mod_op = LDAP_MOD_DELETE; - } else { - if (mod_op & LDAP_MOD_BVALUES) - values = (void **) ads_dup_values(ctx, - (const struct berval **)invals); - else - values = (void **) ads_push_strvals(ctx, - (const char **) invals); - } - - /* find the first empty slot */ - for (curmod=0; modlist[curmod] && modlist[curmod] != (LDAPMod *) -1; - curmod++); - if (modlist[curmod] == (LDAPMod *) -1) { - if (!(modlist = talloc_realloc(ctx, modlist, - (curmod+ADS_MODLIST_ALLOC_SIZE+1)*sizeof(LDAPMod *)))) - return ADS_ERROR(LDAP_NO_MEMORY); - memset(&modlist[curmod], 0, - ADS_MODLIST_ALLOC_SIZE*sizeof(LDAPMod *)); - modlist[curmod+ADS_MODLIST_ALLOC_SIZE] = (LDAPMod *) -1; - *mods = modlist; - } - - if (!(modlist[curmod] = talloc_zero(ctx, sizeof(LDAPMod)))) - return ADS_ERROR(LDAP_NO_MEMORY); - modlist[curmod]->mod_type = talloc_strdup(ctx, name); - if (mod_op & LDAP_MOD_BVALUES) - modlist[curmod]->mod_bvalues = (struct berval **) values; - else - modlist[curmod]->mod_values = (char **) values; - modlist[curmod]->mod_op = mod_op; - return ADS_ERROR(LDAP_SUCCESS); -} - -/** - * Add a single string value to a mod list - * @param ctx An initialized TALLOC_CTX - * @param mods An initialized ADS_MODLIST - * @param name The attribute name to add - * @param val The value to add - NULL means DELETE - * @return ADS STATUS indicating success of add - **/ -ADS_STATUS ads_mod_str(TALLOC_CTX *ctx, ADS_MODLIST *mods, - const char *name, const char *val) -{ - const char *values[2]; - - values[0] = val; - values[1] = NULL; - - if (!val) - return ads_modlist_add(ctx, mods, LDAP_MOD_DELETE, name, NULL); - return ads_modlist_add(ctx, mods, LDAP_MOD_REPLACE, name, - (const void **) values); -} - -/** - * Add an array of string values to a mod list - * @param ctx An initialized TALLOC_CTX - * @param mods An initialized ADS_MODLIST - * @param name The attribute name to add - * @param vals The array of string values to add - NULL means DELETE - * @return ADS STATUS indicating success of add - **/ -ADS_STATUS ads_mod_strlist(TALLOC_CTX *ctx, ADS_MODLIST *mods, - const char *name, const char **vals) -{ - if (!vals) - return ads_modlist_add(ctx, mods, LDAP_MOD_DELETE, name, NULL); - return ads_modlist_add(ctx, mods, LDAP_MOD_REPLACE, - name, (const void **) vals); -} - -/** - * Add a single ber-encoded value to a mod list - * @param ctx An initialized TALLOC_CTX - * @param mods An initialized ADS_MODLIST - * @param name The attribute name to add - * @param val The value to add - NULL means DELETE - * @return ADS STATUS indicating success of add - **/ -static ADS_STATUS ads_mod_ber(TALLOC_CTX *ctx, ADS_MODLIST *mods, - const char *name, const struct berval *val) -{ - const struct berval *values[2]; - - values[0] = val; - values[1] = NULL; - if (!val) - return ads_modlist_add(ctx, mods, LDAP_MOD_DELETE, name, NULL); - return ads_modlist_add(ctx, mods, LDAP_MOD_REPLACE|LDAP_MOD_BVALUES, - name, (const void **) values); -} - -/** - * Perform an ldap modify - * @param ads connection to ads server - * @param mod_dn DistinguishedName to modify - * @param mods list of modifications to perform - * @return status of modify - **/ -ADS_STATUS ads_gen_mod(ADS_STRUCT *ads, const char *mod_dn, ADS_MODLIST mods) -{ - int ret,i; - char *utf8_dn = NULL; - /* - this control is needed to modify that contains a currently - non-existent attribute (but allowable for the object) to run - */ - LDAPControl PermitModify = { - ADS_PERMIT_MODIFY_OID, - {0, NULL}, - (char) 1}; - LDAPControl *controls[2]; - - controls[0] = &PermitModify; - controls[1] = NULL; - - if (push_utf8_allocate(&utf8_dn, mod_dn) == -1) { - return ADS_ERROR_NT(NT_STATUS_NO_MEMORY); - } - - /* find the end of the list, marked by NULL or -1 */ - for(i=0;(mods[i]!=0)&&(mods[i]!=(LDAPMod *) -1);i++); - /* make sure the end of the list is NULL */ - mods[i] = NULL; - ret = ldap_modify_ext_s(ads->ld, utf8_dn, - (LDAPMod **) mods, controls, NULL); - SAFE_FREE(utf8_dn); - return ADS_ERROR(ret); -} - -/** - * Perform an ldap add - * @param ads connection to ads server - * @param new_dn DistinguishedName to add - * @param mods list of attributes and values for DN - * @return status of add - **/ -ADS_STATUS ads_gen_add(ADS_STRUCT *ads, const char *new_dn, ADS_MODLIST mods) -{ - int ret, i; - char *utf8_dn = NULL; - - if (push_utf8_allocate(&utf8_dn, new_dn) == -1) { - DEBUG(1, ("ads_gen_add: push_utf8_allocate failed!")); - return ADS_ERROR_NT(NT_STATUS_NO_MEMORY); - } - - /* find the end of the list, marked by NULL or -1 */ - for(i=0;(mods[i]!=0)&&(mods[i]!=(LDAPMod *) -1);i++); - /* make sure the end of the list is NULL */ - mods[i] = NULL; - - ret = ldap_add_s(ads->ld, utf8_dn ? utf8_dn : new_dn, mods); - SAFE_FREE(utf8_dn); - return ADS_ERROR(ret); -} - -/** - * Delete a DistinguishedName - * @param ads connection to ads server - * @param new_dn DistinguishedName to delete - * @return status of delete - **/ -ADS_STATUS ads_del_dn(ADS_STRUCT *ads, char *del_dn) -{ - int ret; - char *utf8_dn = NULL; - if (push_utf8_allocate(&utf8_dn, del_dn) == -1) { - DEBUG(1, ("ads_del_dn: push_utf8_allocate failed!")); - return ADS_ERROR_NT(NT_STATUS_NO_MEMORY); - } - - ret = ldap_delete(ads->ld, utf8_dn ? utf8_dn : del_dn); - return ADS_ERROR(ret); -} - -/** - * Build an org unit string - * if org unit is Computers or blank then assume a container, otherwise - * assume a \ separated list of organisational units - * @param org_unit Organizational unit - * @return org unit string - caller must free - **/ -char *ads_ou_string(const char *org_unit) -{ - if (!org_unit || !*org_unit || strcasecmp(org_unit, "Computers") == 0) { - return strdup("cn=Computers"); - } - - return ads_build_path(org_unit, "\\/", "ou=", 1); -} - - - -/* - add a machine account to the ADS server -*/ -static ADS_STATUS ads_add_machine_acct(ADS_STRUCT *ads, const char *hostname, - const char *org_unit) -{ - ADS_STATUS ret; - char *host_spn, *host_upn, *new_dn, *samAccountName, *controlstr; - char *ou_str; - TALLOC_CTX *ctx; - ADS_MODLIST mods; - const char *objectClass[] = {"top", "person", "organizationalPerson", - "user", "computer", NULL}; - - if (!(ctx = talloc_init_named("machine_account"))) - return ADS_ERROR(LDAP_NO_MEMORY); - - ret = ADS_ERROR(LDAP_NO_MEMORY); - - if (!(host_spn = talloc_asprintf(ctx, "HOST/%s", hostname))) - goto done; - if (!(host_upn = talloc_asprintf(ctx, "%s@%s", host_spn, ads->config.realm))) - goto done; - ou_str = ads_ou_string(org_unit); - if (!ou_str) { - DEBUG(1, ("ads_ou_string returned NULL (malloc failure?)\n")); - goto done; - } - new_dn = talloc_asprintf(ctx, "cn=%s,%s,%s", hostname, ou_str, - ads->config.bind_path); - free(ou_str); - if (!new_dn) - goto done; - - if (!(samAccountName = talloc_asprintf(ctx, "%s$", hostname))) - goto done; - if (!(controlstr = talloc_asprintf(ctx, "%u", - UF_DONT_EXPIRE_PASSWD | UF_WORKSTATION_TRUST_ACCOUNT | - UF_TRUSTED_FOR_DELEGATION | UF_USE_DES_KEY_ONLY))) - goto done; - - if (!(mods = ads_init_mods(ctx))) - goto done; - - ads_mod_str(ctx, &mods, "cn", hostname); - ads_mod_str(ctx, &mods, "sAMAccountName", samAccountName); - ads_mod_strlist(ctx, &mods, "objectClass", objectClass); - ads_mod_str(ctx, &mods, "userPrincipalName", host_upn); - ads_mod_str(ctx, &mods, "servicePrincipalName", host_spn); - ads_mod_str(ctx, &mods, "dNSHostName", hostname); - ads_mod_str(ctx, &mods, "userAccountControl", controlstr); - ads_mod_str(ctx, &mods, "operatingSystem", "Samba"); - ads_mod_str(ctx, &mods, "operatingSystemVersion", VERSION); - - ads_gen_add(ads, new_dn, mods); - ret = ads_set_machine_sd(ads, hostname, new_dn); - -done: - talloc_destroy(ctx); - return ret; -} - -/* - dump a binary result from ldap -*/ -static void dump_binary(const char *field, struct berval **values) -{ - int i, j; - for (i=0; values[i]; i++) { - printf("%s: ", field); - for (j=0; j<values[i]->bv_len; j++) { - printf("%02X", (unsigned char)values[i]->bv_val[j]); - } - printf("\n"); - } -} - -/* - dump a sid result from ldap -*/ -static void dump_sid(const char *field, struct berval **values) -{ - int i; - for (i=0; values[i]; i++) { - DOM_SID sid; - sid_parse(values[i]->bv_val, values[i]->bv_len, &sid); - printf("%s: %s\n", field, sid_string_static(&sid)); - } -} - -/* - dump ntSecurityDescriptor -*/ -static void dump_sd(const char *filed, struct berval **values) -{ - prs_struct ps; - - SEC_DESC *psd = 0; - TALLOC_CTX *ctx = 0; - - if (!(ctx = talloc_init_named("sec_io_desc"))) - return; - - /* prepare data */ - prs_init(&ps, values[0]->bv_len, ctx, UNMARSHALL); - prs_append_data(&ps, values[0]->bv_val, values[0]->bv_len); - ps.data_offset = 0; - - /* parse secdesc */ - if (!sec_io_desc("sd", &psd, &ps, 1)) { - prs_mem_free(&ps); - talloc_destroy(ctx); - return; - } - if (psd) ads_disp_sd(psd); - - prs_mem_free(&ps); - talloc_destroy(ctx); -} - -/* - dump a string result from ldap -*/ -static void dump_string(const char *field, char **values) -{ - int i; - for (i=0; values[i]; i++) { - printf("%s: %s\n", field, values[i]); - } -} - -/* - dump a field from LDAP on stdout - used for debugging -*/ - -static BOOL ads_dump_field(char *field, void **values, void *data_area) -{ - struct { - char *name; - BOOL string; - void (*handler)(const char *, struct berval **); - } handlers[] = { - {"objectGUID", False, dump_binary}, - {"nTSecurityDescriptor", False, dump_sd}, - {"dnsRecord", False, dump_binary}, - {"objectSid", False, dump_sid}, - {NULL, True, NULL} - }; - int i; - - if (!field) { /* must be end of an entry */ - printf("\n"); - return False; - } - - for (i=0; handlers[i].name; i++) { - if (StrCaseCmp(handlers[i].name, field) == 0) { - if (!values) /* first time, indicate string or not */ - return handlers[i].string; - handlers[i].handler(field, (struct berval **) values); - break; - } - } - if (!handlers[i].name) { - if (!values) /* first time, indicate string conversion */ - return True; - dump_string(field, (char **)values); - } - return False; -} - -/** - * Dump a result from LDAP on stdout - * used for debugging - * @param ads connection to ads server - * @param res Results to dump - **/ - -void ads_dump(ADS_STRUCT *ads, void *res) -{ - ads_process_results(ads, res, ads_dump_field, NULL); -} - -/** - * Walk through results, calling a function for each entry found. - * The function receives a field name, a berval * array of values, - * and a data area passed through from the start. The function is - * called once with null for field and values at the end of each - * entry. - * @param ads connection to ads server - * @param res Results to process - * @param fn Function for processing each result - * @param data_area user-defined area to pass to function - **/ -void ads_process_results(ADS_STRUCT *ads, void *res, - BOOL(*fn)(char *, void **, void *), - void *data_area) -{ - void *msg; - TALLOC_CTX *ctx; - - if (!(ctx = talloc_init())) - return; - - for (msg = ads_first_entry(ads, res); msg; - msg = ads_next_entry(ads, msg)) { - char *utf8_field; - BerElement *b; - - for (utf8_field=ldap_first_attribute(ads->ld, - (LDAPMessage *)msg,&b); - utf8_field; - utf8_field=ldap_next_attribute(ads->ld, - (LDAPMessage *)msg,b)) { - struct berval **ber_vals; - char **str_vals, **utf8_vals; - char *field; - BOOL string; - - pull_utf8_talloc(ctx, &field, utf8_field); - string = fn(field, NULL, data_area); - - if (string) { - utf8_vals = ldap_get_values(ads->ld, - (LDAPMessage *)msg, field); - str_vals = ads_pull_strvals(ctx, - (const char **) utf8_vals); - fn(field, (void **) str_vals, data_area); - ldap_value_free(utf8_vals); - } else { - ber_vals = ldap_get_values_len(ads->ld, - (LDAPMessage *)msg, field); - fn(field, (void **) ber_vals, data_area); - - ldap_value_free_len(ber_vals); - } - ldap_memfree(utf8_field); - } - ber_free(b, 0); - talloc_destroy_pool(ctx); - fn(NULL, NULL, data_area); /* completed an entry */ - - } - talloc_destroy(ctx); -} - -/** - * count how many replies are in a LDAPMessage - * @param ads connection to ads server - * @param res Results to count - * @return number of replies - **/ -int ads_count_replies(ADS_STRUCT *ads, void *res) -{ - return ldap_count_entries(ads->ld, (LDAPMessage *)res); -} - -/** - * Join a machine to a realm - * Creates the machine account and sets the machine password - * @param ads connection to ads server - * @param hostname name of host to add - * @param org_unit Organizational unit to place machine in - * @return status of join - **/ -ADS_STATUS ads_join_realm(ADS_STRUCT *ads, const char *hostname, const char *org_unit) -{ - ADS_STATUS status; - LDAPMessage *res; - char *host; - - /* hostname must be lowercase */ - host = strdup(hostname); - strlower(host); - - status = ads_find_machine_acct(ads, (void **)&res, host); - if (ADS_ERR_OK(status) && ads_count_replies(ads, res) == 1) { - DEBUG(0, ("Host account for %s already exists - deleting old account\n", host)); - status = ads_leave_realm(ads, host); - if (!ADS_ERR_OK(status)) { - DEBUG(0, ("Failed to delete host '%s' from the '%s' realm.\n", - host, ads->config.realm)); - return status; - } - } - - status = ads_add_machine_acct(ads, host, org_unit); - if (!ADS_ERR_OK(status)) { - DEBUG(0, ("ads_add_machine_acct: %s\n", ads_errstr(status))); - return status; - } - - status = ads_find_machine_acct(ads, (void **)&res, host); - if (!ADS_ERR_OK(status)) { - DEBUG(0, ("Host account test failed\n")); - return status; - } - - free(host); - - return status; -} - -/** - * Delete a machine from the realm - * @param ads connection to ads server - * @param hostname Machine to remove - * @return status of delete - **/ -ADS_STATUS ads_leave_realm(ADS_STRUCT *ads, const char *hostname) -{ - ADS_STATUS status; - void *res; - char *hostnameDN, *host; - int rc; - - /* hostname must be lowercase */ - host = strdup(hostname); - strlower(host); - - status = ads_find_machine_acct(ads, &res, host); - if (!ADS_ERR_OK(status)) { - DEBUG(0, ("Host account for %s does not exist.\n", host)); - return status; - } - - hostnameDN = ads_get_dn(ads, (LDAPMessage *)res); - rc = ldap_delete_s(ads->ld, hostnameDN); - ads_memfree(ads, hostnameDN); - if (rc != LDAP_SUCCESS) { - return ADS_ERROR(rc); - } - - status = ads_find_machine_acct(ads, &res, host); - if (ADS_ERR_OK(status) && ads_count_replies(ads, res) == 1) { - DEBUG(0, ("Failed to remove host account.\n")); - return status; - } - - free(host); - - return status; -} - -/** - * add machine account to existing security descriptor - * @param ads connection to ads server - * @param hostname machine to add - * @param dn DN of security descriptor - * @return status - **/ -ADS_STATUS ads_set_machine_sd(ADS_STRUCT *ads, const char *hostname, char *dn) -{ - const char *attrs[] = {"ntSecurityDescriptor", "objectSid", 0}; - char *exp = 0; - size_t sd_size = 0; - struct berval bval = {0, NULL}; - prs_struct ps_wire; - - LDAPMessage *res = 0; - LDAPMessage *msg = 0; - ADS_MODLIST mods = 0; - - NTSTATUS status; - ADS_STATUS ret; - DOM_SID sid; - SEC_DESC *psd = 0; - TALLOC_CTX *ctx = 0; - - if (!ads) return ADS_ERROR(LDAP_SERVER_DOWN); - - ret = ADS_ERROR(LDAP_SUCCESS); - - if (asprintf(&exp, "(samAccountName=%s$)", hostname) == -1) { - DEBUG(1, ("ads_set_machine_sd: asprintf failed!\n")); - return ADS_ERROR_NT(NT_STATUS_NO_MEMORY); - } - - ret = ads_search(ads, (void *) &res, exp, attrs); - - if (!ADS_ERR_OK(ret)) return ret; - - msg = ads_first_entry(ads, res); - ads_pull_sid(ads, msg, attrs[1], &sid); - if (!(ctx = talloc_init_named("sec_io_desc"))) { - ret = ADS_ERROR(LDAP_NO_MEMORY); - goto ads_set_sd_error; - } - - if (!ads_pull_sd(ads, ctx, msg, attrs[0], &psd)) { - ret = ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER); - goto ads_set_sd_error; - } - - status = sec_desc_add_sid(ctx, &psd, &sid, SEC_RIGHTS_FULL_CTRL, &sd_size); - - if (!NT_STATUS_IS_OK(status)) { - ret = ADS_ERROR_NT(status); - goto ads_set_sd_error; - } - - prs_init(&ps_wire, sd_size, ctx, MARSHALL); - if (!sec_io_desc("sd_wire", &psd, &ps_wire, 1)) { - ret = ADS_ERROR(LDAP_NO_MEMORY); - goto ads_set_sd_error; - } - -#if 0 - file_save("/tmp/sec_desc.new", ps_wire.data_p, sd_size); -#endif - if (!(mods = ads_init_mods(ctx))) return ADS_ERROR(LDAP_NO_MEMORY); - - bval.bv_len = sd_size; - bval.bv_val = prs_data_p(&ps_wire); - ads_mod_ber(ctx, &mods, attrs[0], &bval); - ret = ads_gen_mod(ads, dn, mods); - -ads_set_sd_error: - ads_msgfree(ads, res); - prs_mem_free(&ps_wire); - talloc_destroy(ctx); - return ret; -} - -/** - * pull the first entry from a ADS result - * @param ads connection to ads server - * @param res Results of search - * @return first entry from result - **/ -void *ads_first_entry(ADS_STRUCT *ads, void *res) -{ - return (void *)ldap_first_entry(ads->ld, (LDAPMessage *)res); -} - -/** - * pull the next entry from a ADS result - * @param ads connection to ads server - * @param res Results of search - * @return next entry from result - **/ -void *ads_next_entry(ADS_STRUCT *ads, void *res) -{ - return (void *)ldap_next_entry(ads->ld, (LDAPMessage *)res); -} - -/** - * pull a single string from a ADS result - * @param ads connection to ads server - * @param mem_ctx TALLOC_CTX to use for allocating result string - * @param msg Results of search - * @param field Attribute to retrieve - * @return Result string in talloc context - **/ -char *ads_pull_string(ADS_STRUCT *ads, - TALLOC_CTX *mem_ctx, void *msg, const char *field) -{ - char **values; - char *ret = NULL; - char *ux_string; - int rc; - - values = ldap_get_values(ads->ld, msg, field); - if (!values) return NULL; - - if (values[0]) { - rc = pull_utf8_talloc(mem_ctx, &ux_string, - values[0]); - if (rc != -1) - ret = ux_string; - - } - ldap_value_free(values); - return ret; -} - -/** - * pull an array of strings from a ADS result - * @param ads connection to ads server - * @param mem_ctx TALLOC_CTX to use for allocating result string - * @param msg Results of search - * @param field Attribute to retrieve - * @return Result strings in talloc context - **/ -char **ads_pull_strings(ADS_STRUCT *ads, - TALLOC_CTX *mem_ctx, void *msg, const char *field) -{ - char **values; - char **ret = NULL; - int i, n; - - values = ldap_get_values(ads->ld, msg, field); - if (!values) return NULL; - - for (i=0;values[i];i++) /* noop */ ; - n = i; - - ret = talloc(mem_ctx, sizeof(char *) * (n+1)); - - for (i=0;i<n;i++) { - if (pull_utf8_talloc(mem_ctx, &ret[i], values[i]) == -1) { - return NULL; - } - } - ret[i] = NULL; - - ldap_value_free(values); - return ret; -} - - -/** - * pull a single uint32 from a ADS result - * @param ads connection to ads server - * @param msg Results of search - * @param field Attribute to retrieve - * @param v Pointer to int to store result - * @return boolean inidicating success -*/ -BOOL ads_pull_uint32(ADS_STRUCT *ads, - void *msg, const char *field, uint32 *v) -{ - char **values; - - values = ldap_get_values(ads->ld, msg, field); - if (!values) return False; - if (!values[0]) { - ldap_value_free(values); - return False; - } - - *v = atoi(values[0]); - ldap_value_free(values); - return True; -} - -/** - * pull a single DOM_SID from a ADS result - * @param ads connection to ads server - * @param msg Results of search - * @param field Attribute to retrieve - * @param sid Pointer to sid to store result - * @return boolean inidicating success -*/ -BOOL ads_pull_sid(ADS_STRUCT *ads, - void *msg, const char *field, DOM_SID *sid) -{ - struct berval **values; - BOOL ret = False; - - values = ldap_get_values_len(ads->ld, msg, field); - - if (!values) return False; - - if (values[0]) { - ret = sid_parse(values[0]->bv_val, values[0]->bv_len, sid); - } - - ldap_value_free_len(values); - return ret; -} - -/** - * pull an array of DOM_SIDs from a ADS result - * @param ads connection to ads server - * @param mem_ctx TALLOC_CTX for allocating sid array - * @param msg Results of search - * @param field Attribute to retrieve - * @param sids pointer to sid array to allocate - * @return the count of SIDs pulled - **/ -int ads_pull_sids(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx, - void *msg, const char *field, DOM_SID **sids) -{ - struct berval **values; - BOOL ret; - int count, i; - - values = ldap_get_values_len(ads->ld, msg, field); - - if (!values) return 0; - - for (i=0; values[i]; i++) /* nop */ ; - - (*sids) = talloc(mem_ctx, sizeof(DOM_SID) * i); - - count = 0; - for (i=0; values[i]; i++) { - ret = sid_parse(values[i]->bv_val, values[i]->bv_len, &(*sids)[count]); - if (ret) count++; - } - - ldap_value_free_len(values); - return count; -} - -/** - * pull a SEC_DESC from a ADS result - * @param ads connection to ads server - * @param mem_ctx TALLOC_CTX for allocating sid array - * @param msg Results of search - * @param field Attribute to retrieve - * @param sd Pointer to *SEC_DESC to store result (talloc()ed) - * @return boolean inidicating success -*/ -BOOL ads_pull_sd(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx, - void *msg, const char *field, SEC_DESC **sd) -{ - struct berval **values; - prs_struct ps; - BOOL ret = False; - - values = ldap_get_values_len(ads->ld, msg, field); - - if (!values) return False; - - if (values[0]) { - prs_init(&ps, values[0]->bv_len, mem_ctx, UNMARSHALL); - prs_append_data(&ps, values[0]->bv_val, values[0]->bv_len); - ps.data_offset = 0; - - ret = sec_io_desc("sd", sd, &ps, 1); - } - - ldap_value_free_len(values); - return ret; -} - -/* - * in order to support usernames longer than 21 characters we need to - * use both the sAMAccountName and the userPrincipalName attributes - * It seems that not all users have the userPrincipalName attribute set - * - * @param ads connection to ads server - * @param mem_ctx TALLOC_CTX for allocating sid array - * @param msg Results of search - * @return the username - */ -char *ads_pull_username(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx, void *msg) -{ - char *ret, *p; - - ret = ads_pull_string(ads, mem_ctx, msg, "userPrincipalName"); - if (ret && (p = strchr(ret, '@'))) { - *p = 0; - return ret; - } - return ads_pull_string(ads, mem_ctx, msg, "sAMAccountName"); -} - - -/** - * find the update serial number - this is the core of the ldap cache - * @param ads connection to ads server - * @param ads connection to ADS server - * @param usn Pointer to retrieved update serial number - * @return status of search - **/ -ADS_STATUS ads_USN(ADS_STRUCT *ads, uint32 *usn) -{ - const char *attrs[] = {"highestCommittedUSN", NULL}; - ADS_STATUS status; - void *res; - - status = ads_do_search(ads, "", LDAP_SCOPE_BASE, "(objectclass=*)", attrs, &res); - if (!ADS_ERR_OK(status)) return status; - - if (ads_count_replies(ads, res) != 1) { - return ADS_ERROR(LDAP_NO_RESULTS_RETURNED); - } - - ads_pull_uint32(ads, res, "highestCommittedUSN", usn); - ads_msgfree(ads, res); - return ADS_SUCCESS; -} - -/* parse a ADS timestring - typical string is - '20020917091222.0Z0' which means 09:12.22 17th September - 2002, timezone 0 */ -static time_t ads_parse_time(const char *str) -{ - struct tm tm; - - ZERO_STRUCT(tm); - - if (sscanf(str, "%4d%2d%2d%2d%2d%2d", - &tm.tm_year, &tm.tm_mon, &tm.tm_mday, - &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6) { - return 0; - } - tm.tm_year -= 1900; - tm.tm_mon -= 1; - - return timegm(&tm); -} - - -/** - * Find the servers name and realm - this can be done before authentication - * The ldapServiceName field on w2k looks like this: - * vnet3.home.samba.org:win2000-vnet3$@VNET3.HOME.SAMBA.ORG - * @param ads connection to ads server - * @return status of search - **/ -ADS_STATUS ads_server_info(ADS_STRUCT *ads) -{ - const char *attrs[] = {"ldapServiceName", "currentTime", NULL}; - ADS_STATUS status; - void *res; - char *value; - char *p; - char *timestr; - TALLOC_CTX *ctx; - - if (!(ctx = talloc_init())) { - return ADS_ERROR(LDAP_NO_MEMORY); - } - - status = ads_do_search(ads, "", LDAP_SCOPE_BASE, "(objectclass=*)", attrs, &res); - if (!ADS_ERR_OK(status)) return status; - - value = ads_pull_string(ads, ctx, res, "ldapServiceName"); - if (!value) { - return ADS_ERROR(LDAP_NO_RESULTS_RETURNED); - } - - timestr = ads_pull_string(ads, ctx, res, "currentTime"); - if (!timestr) { - return ADS_ERROR(LDAP_NO_RESULTS_RETURNED); - } - - ldap_msgfree(res); - - p = strchr(value, ':'); - if (!p) { - talloc_destroy(ctx); - DEBUG(1, ("ads_server_info: returned ldap server name did not contain a ':' so was deemed invalid\n")); - return ADS_ERROR(LDAP_DECODING_ERROR); - } - - SAFE_FREE(ads->config.ldap_server_name); - - ads->config.ldap_server_name = strdup(p+1); - p = strchr(ads->config.ldap_server_name, '$'); - if (!p || p[1] != '@') { - talloc_destroy(ctx); - SAFE_FREE(ads->config.ldap_server_name); - DEBUG(1, ("ads_server_info: returned ldap server name did not contain '$@' so was deemed invalid\n")); - return ADS_ERROR(LDAP_DECODING_ERROR); - } - - *p = 0; - - SAFE_FREE(ads->config.realm); - SAFE_FREE(ads->config.bind_path); - - ads->config.realm = strdup(p+2); - ads->config.bind_path = ads_build_dn(ads->config.realm); - - DEBUG(3,("got ldap server name %s@%s, using bind path: %s\n", - ads->config.ldap_server_name, ads->config.realm, - ads->config.bind_path)); - - ads->config.current_time = ads_parse_time(timestr); - - if (ads->config.current_time != 0) { - ads->auth.time_offset = ads->config.current_time - time(NULL); - DEBUG(4,("time offset is %d seconds\n", ads->auth.time_offset)); - } - - talloc_destroy(ctx); - - return ADS_SUCCESS; -} - - -/** - * find the list of trusted domains - * @param ads connection to ads server - * @param mem_ctx TALLOC_CTX for allocating results - * @param num_trusts pointer to number of trusts - * @param names pointer to trusted domain name list - * @param sids pointer to list of sids of trusted domains - * @return the count of SIDs pulled - **/ -ADS_STATUS ads_trusted_domains(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx, - int *num_trusts, - char ***names, - char ***alt_names, - DOM_SID **sids) -{ - const char *attrs[] = {"name", "flatname", "securityIdentifier", - "trustDirection", NULL}; - ADS_STATUS status; - void *res, *msg; - int count, i; - - *num_trusts = 0; - - status = ads_search(ads, &res, "(objectcategory=trustedDomain)", attrs); - if (!ADS_ERR_OK(status)) return status; - - count = ads_count_replies(ads, res); - if (count == 0) { - ads_msgfree(ads, res); - return ADS_ERROR(LDAP_NO_RESULTS_RETURNED); - } - - (*names) = talloc(mem_ctx, sizeof(char *) * count); - (*alt_names) = talloc(mem_ctx, sizeof(char *) * count); - (*sids) = talloc(mem_ctx, sizeof(DOM_SID) * count); - if (! *names || ! *sids) return ADS_ERROR(LDAP_NO_MEMORY); - - for (i=0, msg = ads_first_entry(ads, res); msg; msg = ads_next_entry(ads, msg)) { - uint32 direction; - - /* direction is a 2 bit bitfield, 1 means they trust us - but we don't trust them, so we should not list them - as users from that domain can't login */ - if (ads_pull_uint32(ads, msg, "trustDirection", &direction) && - direction == 1) { - continue; - } - - (*names)[i] = ads_pull_string(ads, mem_ctx, msg, "name"); - (*alt_names)[i] = ads_pull_string(ads, mem_ctx, msg, "flatname"); - - if ((*alt_names)[i] && (*alt_names)[i][0]) { - /* we prefer the flatname as the primary name - for consistency with RPC */ - char *name = (*alt_names)[i]; - (*alt_names)[i] = (*names)[i]; - (*names)[i] = name; - } - if (ads_pull_sid(ads, msg, "securityIdentifier", &(*sids)[i])) { - i++; - } - } - - ads_msgfree(ads, res); - - *num_trusts = i; - - return ADS_SUCCESS; -} - -/** - * find the domain sid for our domain - * @param ads connection to ads server - * @param sid Pointer to domain sid - * @return status of search - **/ -ADS_STATUS ads_domain_sid(ADS_STRUCT *ads, DOM_SID *sid) -{ - const char *attrs[] = {"objectSid", NULL}; - void *res; - ADS_STATUS rc; - - rc = ads_do_search(ads, ads->config.bind_path, LDAP_SCOPE_BASE, "(objectclass=*)", - attrs, &res); - if (!ADS_ERR_OK(rc)) return rc; - if (!ads_pull_sid(ads, res, "objectSid", sid)) { - return ADS_ERROR_SYSTEM(ENOENT); - } - ads_msgfree(ads, res); - - return ADS_SUCCESS; -} - -/* this is rather complex - we need to find the allternate (netbios) name - for the domain, but there isn't a simple query to do this. Instead - we look for the principle names on the DCs account and find one that has - the right form, then extract the netbios name of the domain from that -*/ -ADS_STATUS ads_workgroup_name(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx, char **workgroup) -{ - char *exp; - ADS_STATUS rc; - char **principles; - char *prefix; - int prefix_length; - int i; - void *res; - const char *attrs[] = {"servicePrincipalName", NULL}; - - (*workgroup) = NULL; - - asprintf(&exp, "(&(objectclass=computer)(dnshostname=%s.%s))", - ads->config.ldap_server_name, ads->config.realm); - rc = ads_search(ads, &res, exp, attrs); - free(exp); - - if (!ADS_ERR_OK(rc)) { - return rc; - } - - principles = ads_pull_strings(ads, mem_ctx, res, "servicePrincipalName"); - - ads_msgfree(ads, res); - - if (!principles) { - return ADS_ERROR(LDAP_NO_RESULTS_RETURNED); - } - - asprintf(&prefix, "HOST/%s.%s/", - ads->config.ldap_server_name, - ads->config.realm); - - prefix_length = strlen(prefix); - - for (i=0;principles[i]; i++) { - if (strncasecmp(principles[i], prefix, prefix_length) == 0 && - strcasecmp(ads->config.realm, principles[i]+prefix_length) != 0 && - !strchr(principles[i]+prefix_length, '.')) { - /* found an alternate (short) name for the domain. */ - DEBUG(3,("Found alternate name '%s' for realm '%s'\n", - principles[i]+prefix_length, - ads->config.realm)); - (*workgroup) = talloc_strdup(mem_ctx, principles[i]+prefix_length); - break; - } - } - free(prefix); - - if (!*workgroup) { - return ADS_ERROR(LDAP_NO_RESULTS_RETURNED); - } - - return ADS_SUCCESS; -} - -#endif |