/* $NetBSD: get_s.c,v 1.2.22.1 2023/08/11 13:40:00 martin Exp $ */ /* * Copyright (c) 1997 - 2006 Kungliga Tekniska Högskolan * (Royal Institute of Technology, Stockholm, Sweden). * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * 3. Neither the name of the Institute nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include "kadm5_locl.h" #include __RCSID("$NetBSD: get_s.c,v 1.2.22.1 2023/08/11 13:40:00 martin Exp $"); static kadm5_ret_t add_tl_data(kadm5_principal_ent_t ent, int16_t type, const void *data, size_t size) { krb5_tl_data *tl; tl = calloc(1, sizeof(*tl)); if (tl == NULL) return _kadm5_error_code(ENOMEM); tl->tl_data_type = type; tl->tl_data_length = size; tl->tl_data_contents = malloc(size); if (tl->tl_data_contents == NULL && size != 0) { free(tl); return _kadm5_error_code(ENOMEM); } memcpy(tl->tl_data_contents, data, size); tl->tl_data_next = ent->tl_data; ent->tl_data = tl; ent->n_tl_data++; return 0; } static krb5_error_code copy_keyset_to_kadm5(kadm5_server_context *context, krb5_kvno kvno, size_t n_keys, Key *keys, krb5_salt *salt, kadm5_principal_ent_t out) { size_t i; Key *key; krb5_key_data *kd; krb5_data *sp; krb5_error_code ret = 0; for (i = 0; i < n_keys; i++) { key = &keys[i]; kd = &out->key_data[out->n_key_data]; kd->key_data_ver = 2; kd->key_data_kvno = kvno; kd->key_data_type[0] = key->key.keytype; if(key->salt) kd->key_data_type[1] = key->salt->type; else kd->key_data_type[1] = KRB5_PADATA_PW_SALT; /* setup key */ kd->key_data_length[0] = key->key.keyvalue.length; kd->key_data_contents[0] = malloc(kd->key_data_length[0]); if(kd->key_data_contents[0] == NULL && kd->key_data_length[0] != 0){ ret = ENOMEM; break; } memcpy(kd->key_data_contents[0], key->key.keyvalue.data, kd->key_data_length[0]); /* setup salt */ if(key->salt) sp = &key->salt->salt; else sp = &salt->saltvalue; kd->key_data_length[1] = sp->length; kd->key_data_contents[1] = malloc(kd->key_data_length[1]); if(kd->key_data_length[1] != 0 && kd->key_data_contents[1] == NULL) { memset(kd->key_data_contents[0], 0, kd->key_data_length[0]); ret = ENOMEM; break; } memcpy(kd->key_data_contents[1], sp->data, kd->key_data_length[1]); out->n_key_data++; } return ret; } kadm5_ret_t kadm5_s_get_principal(void *server_handle, krb5_principal princ, kadm5_principal_ent_t out, uint32_t mask) { kadm5_server_context *context = server_handle; kadm5_ret_t ret; hdb_entry_ex ent; memset(&ent, 0, sizeof(ent)); memset(out, 0, sizeof(*out)); if (!context->keep_open) { ret = context->db->hdb_open(context->context, context->db, O_RDONLY, 0); if (ret) return ret; } /* * We may want to attempt to recover the log on read operations, but we * because the HDB/log lock order is reversed on slaves, in order to avoid * lock contention from kadm5srv apps we need to make sure that the the HDB * open for read-write is optimistic and attempts only a non-blocking lock, * and if it doesn't get it then it should fallback to read-only. But we * don't have that option in the hdb_open() interface at this time. * * For now we won't attempt to recover the log. */ ret = context->db->hdb_fetch_kvno(context->context, context->db, princ, HDB_F_DECRYPT|HDB_F_ALL_KVNOS| HDB_F_GET_ANY|HDB_F_ADMIN_DATA, 0, &ent); if (!context->keep_open) context->db->hdb_close(context->context, context->db); if(ret) return _kadm5_error_code(ret); if(mask & KADM5_PRINCIPAL) ret = krb5_copy_principal(context->context, ent.entry.principal, &out->principal); if(ret) goto out; if(mask & KADM5_PRINC_EXPIRE_TIME && ent.entry.valid_end) out->princ_expire_time = *ent.entry.valid_end; if(mask & KADM5_PW_EXPIRATION && ent.entry.pw_end) out->pw_expiration = *ent.entry.pw_end; if(mask & KADM5_LAST_PWD_CHANGE) hdb_entry_get_pw_change_time(&ent.entry, &out->last_pwd_change); if(mask & KADM5_ATTRIBUTES){ out->attributes |= ent.entry.flags.postdate ? 0 : KRB5_KDB_DISALLOW_POSTDATED; out->attributes |= ent.entry.flags.forwardable ? 0 : KRB5_KDB_DISALLOW_FORWARDABLE; out->attributes |= ent.entry.flags.initial ? KRB5_KDB_DISALLOW_TGT_BASED : 0; out->attributes |= ent.entry.flags.renewable ? 0 : KRB5_KDB_DISALLOW_RENEWABLE; out->attributes |= ent.entry.flags.proxiable ? 0 : KRB5_KDB_DISALLOW_PROXIABLE; out->attributes |= ent.entry.flags.invalid ? KRB5_KDB_DISALLOW_ALL_TIX : 0; out->attributes |= ent.entry.flags.require_preauth ? KRB5_KDB_REQUIRES_PRE_AUTH : 0; out->attributes |= ent.entry.flags.require_pwchange ? KRB5_KDB_REQUIRES_PWCHANGE : 0; out->attributes |= ent.entry.flags.server ? 0 : KRB5_KDB_DISALLOW_SVR; out->attributes |= ent.entry.flags.change_pw ? KRB5_KDB_PWCHANGE_SERVICE : 0; out->attributes |= ent.entry.flags.ok_as_delegate ? KRB5_KDB_OK_AS_DELEGATE : 0; out->attributes |= ent.entry.flags.trusted_for_delegation ? KRB5_KDB_TRUSTED_FOR_DELEGATION : 0; out->attributes |= ent.entry.flags.allow_kerberos4 ? KRB5_KDB_ALLOW_KERBEROS4 : 0; out->attributes |= ent.entry.flags.allow_digest ? KRB5_KDB_ALLOW_DIGEST : 0; } if(mask & KADM5_MAX_LIFE) { if(ent.entry.max_life) out->max_life = *ent.entry.max_life; else out->max_life = INT_MAX; } if(mask & KADM5_MOD_TIME) { if(ent.entry.modified_by) out->mod_date = ent.entry.modified_by->time; else out->mod_date = ent.entry.created_by.time; } if(mask & KADM5_MOD_NAME) { if(ent.entry.modified_by) { if (ent.entry.modified_by->principal != NULL) ret = krb5_copy_principal(context->context, ent.entry.modified_by->principal, &out->mod_name); } else if(ent.entry.created_by.principal != NULL) ret = krb5_copy_principal(context->context, ent.entry.created_by.principal, &out->mod_name); else out->mod_name = NULL; } if(ret) goto out; if(mask & KADM5_KVNO) out->kvno = ent.entry.kvno; if(mask & KADM5_MKVNO) { size_t n; out->mkvno = 0; /* XXX */ for(n = 0; n < ent.entry.keys.len; n++) if(ent.entry.keys.val[n].mkvno) { out->mkvno = *ent.entry.keys.val[n].mkvno; /* XXX this isn't right */ break; } } #if 0 /* XXX implement */ if(mask & KADM5_AUX_ATTRIBUTES) ; if(mask & KADM5_LAST_SUCCESS) ; if(mask & KADM5_LAST_FAILED) ; if(mask & KADM5_FAIL_AUTH_COUNT) ; #endif if(mask & KADM5_POLICY) { HDB_extension *ext; ext = hdb_find_extension(&ent.entry, choice_HDB_extension_data_policy); if (ext == NULL) { out->policy = strdup("default"); /* It's OK if we retun NULL instead of "default" */ } else { out->policy = strdup(ext->data.u.policy); if (out->policy == NULL) { ret = ENOMEM; goto out; } } } if(mask & KADM5_MAX_RLIFE) { if(ent.entry.max_renew) out->max_renewable_life = *ent.entry.max_renew; else out->max_renewable_life = INT_MAX; } if(mask & KADM5_KEY_DATA){ size_t i; size_t n_keys = ent.entry.keys.len; krb5_salt salt; HDB_extension *ext; HDB_Ext_KeySet *hist_keys = NULL; /* Don't return stale keys to kadm5 clients */ ret = hdb_prune_keys(context->context, &ent.entry); if (ret) goto out; ext = hdb_find_extension(&ent.entry, choice_HDB_extension_data_hist_keys); if (ext != NULL) hist_keys = &ext->data.u.hist_keys; krb5_get_pw_salt(context->context, ent.entry.principal, &salt); for (i = 0; hist_keys != NULL && i < hist_keys->len; i++) n_keys += hist_keys->val[i].keys.len; out->key_data = malloc(n_keys * sizeof(*out->key_data)); if (out->key_data == NULL && n_keys != 0) { ret = ENOMEM; goto out; } out->n_key_data = 0; ret = copy_keyset_to_kadm5(context, ent.entry.kvno, ent.entry.keys.len, ent.entry.keys.val, &salt, out); if (ret) goto out; for (i = 0; hist_keys != NULL && i < hist_keys->len; i++) { ret = copy_keyset_to_kadm5(context, hist_keys->val[i].kvno, hist_keys->val[i].keys.len, hist_keys->val[i].keys.val, &salt, out); if (ret) goto out; } krb5_free_salt(context->context, salt); assert( out->n_key_data == n_keys ); } if (ret) goto out; if(mask & KADM5_TL_DATA) { time_t last_pw_expire; const HDB_Ext_PKINIT_acl *acl; const HDB_Ext_Aliases *aliases; ret = hdb_entry_get_pw_change_time(&ent.entry, &last_pw_expire); if (ret == 0 && last_pw_expire) { unsigned char buf[4]; _krb5_put_int(buf, last_pw_expire, sizeof(buf)); ret = add_tl_data(out, KRB5_TL_LAST_PWD_CHANGE, buf, sizeof(buf)); } if (ret) goto out; /* * If the client was allowed to get key data, let it have the * password too. */ if (mask & KADM5_KEY_DATA) { heim_utf8_string pw; ret = hdb_entry_get_password(context->context, context->db, &ent.entry, &pw); if (ret == 0) { (void) add_tl_data(out, KRB5_TL_PASSWORD, pw, strlen(pw) + 1); free(pw); } krb5_clear_error_message(context->context); } ret = hdb_entry_get_pkinit_acl(&ent.entry, &acl); if (ret == 0 && acl) { krb5_data buf; size_t len; ASN1_MALLOC_ENCODE(HDB_Ext_PKINIT_acl, buf.data, buf.length, acl, &len, ret); if (ret) goto out; if (len != buf.length) krb5_abortx(context->context, "internal ASN.1 encoder error"); ret = add_tl_data(out, KRB5_TL_PKINIT_ACL, buf.data, buf.length); free(buf.data); if (ret) goto out; } if (ret) goto out; ret = hdb_entry_get_aliases(&ent.entry, &aliases); if (ret == 0 && aliases) { krb5_data buf; size_t len; ASN1_MALLOC_ENCODE(HDB_Ext_Aliases, buf.data, buf.length, aliases, &len, ret); if (ret) goto out; if (len != buf.length) krb5_abortx(context->context, "internal ASN.1 encoder error"); ret = add_tl_data(out, KRB5_TL_ALIASES, buf.data, buf.length); free(buf.data); if (ret) goto out; } if (ret) goto out; } out: if (ret) kadm5_free_principal_ent(context, out); hdb_free_entry(context->context, &ent); return _kadm5_error_code(ret); }