diff options
Diffstat (limited to 'third_party/heimdal/lib/kadm5/get_s.c')
| -rw-r--r-- | third_party/heimdal/lib/kadm5/get_s.c | 411 |
1 files changed, 411 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/kadm5/get_s.c b/third_party/heimdal/lib/kadm5/get_s.c new file mode 100644 index 0000000..0c87343 --- /dev/null +++ b/third_party/heimdal/lib/kadm5/get_s.c @@ -0,0 +1,411 @@ +/* + * 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 <krb5_locl.h> +#include "kadm5_locl.h" +#include <assert.h> + +RCSID("$Id$"); + +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 = krb5_enomem(context->context); + 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 = krb5_enomem(context->context); + 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 ent; + unsigned int flags = HDB_F_GET_ANY | HDB_F_ADMIN_DATA; + + if ((mask & KADM5_KEY_DATA) || (mask & KADM5_KVNO)) + flags |= HDB_F_ALL_KVNOS | HDB_F_DECRYPT; + + 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 = hdb_fetch_kvno(context->context, context->db, princ, flags, + 0 /*timestamp*/, 0/*etype*/, 0/*kvno*/, &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.principal, + &out->principal); + if(ret) + goto out; + if(mask & KADM5_PRINC_EXPIRE_TIME && ent.valid_end) + out->princ_expire_time = *ent.valid_end; + if(mask & KADM5_PW_EXPIRATION && ent.pw_end) + out->pw_expiration = *ent.pw_end; + if(mask & KADM5_LAST_PWD_CHANGE) + hdb_entry_get_pw_change_time(&ent, &out->last_pwd_change); + if(mask & KADM5_ATTRIBUTES){ + out->attributes |= ent.flags.postdate ? 0 : KRB5_KDB_DISALLOW_POSTDATED; + out->attributes |= ent.flags.forwardable ? 0 : KRB5_KDB_DISALLOW_FORWARDABLE; + out->attributes |= ent.flags.initial ? KRB5_KDB_DISALLOW_TGT_BASED : 0; + out->attributes |= ent.flags.renewable ? 0 : KRB5_KDB_DISALLOW_RENEWABLE; + out->attributes |= ent.flags.proxiable ? 0 : KRB5_KDB_DISALLOW_PROXIABLE; + out->attributes |= ent.flags.invalid ? KRB5_KDB_DISALLOW_ALL_TIX : 0; + out->attributes |= ent.flags.require_preauth ? KRB5_KDB_REQUIRES_PRE_AUTH : 0; + out->attributes |= ent.flags.require_pwchange ? KRB5_KDB_REQUIRES_PWCHANGE : 0; + out->attributes |= ent.flags.client ? 0 : KRB5_KDB_DISALLOW_CLIENT; + out->attributes |= ent.flags.server ? 0 : KRB5_KDB_DISALLOW_SVR; + out->attributes |= ent.flags.change_pw ? KRB5_KDB_PWCHANGE_SERVICE : 0; + out->attributes |= ent.flags.ok_as_delegate ? KRB5_KDB_OK_AS_DELEGATE : 0; + out->attributes |= ent.flags.trusted_for_delegation ? KRB5_KDB_TRUSTED_FOR_DELEGATION : 0; + out->attributes |= ent.flags.allow_kerberos4 ? KRB5_KDB_ALLOW_KERBEROS4 : 0; + out->attributes |= ent.flags.allow_digest ? KRB5_KDB_ALLOW_DIGEST : 0; + out->attributes |= ent.flags.virtual_keys ? KRB5_KDB_VIRTUAL_KEYS : 0; + out->attributes |= ent.flags.virtual ? KRB5_KDB_VIRTUAL : 0; + out->attributes |= ent.flags.no_auth_data_reqd ? KRB5_KDB_NO_AUTH_DATA_REQUIRED : 0; + } + if(mask & KADM5_MAX_LIFE) { + if(ent.max_life) + out->max_life = *ent.max_life; + else + out->max_life = INT_MAX; + } + if(mask & KADM5_MOD_TIME) { + if(ent.modified_by) + out->mod_date = ent.modified_by->time; + else + out->mod_date = ent.created_by.time; + } + if(mask & KADM5_MOD_NAME) { + if(ent.modified_by) { + if (ent.modified_by->principal != NULL) + ret = krb5_copy_principal(context->context, + ent.modified_by->principal, + &out->mod_name); + } else if(ent.created_by.principal != NULL) + ret = krb5_copy_principal(context->context, + ent.created_by.principal, + &out->mod_name); + else + out->mod_name = NULL; + } + if(ret) + goto out; + + if(mask & KADM5_KVNO) + out->kvno = ent.kvno; + if(mask & KADM5_MKVNO) { + size_t n; + out->mkvno = 0; /* XXX */ + for(n = 0; n < ent.keys.len; n++) + if(ent.keys.val[n].mkvno) { + out->mkvno = *ent.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, 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 = krb5_enomem(context->context); + goto out; + } + } + } + if(mask & KADM5_MAX_RLIFE) { + if(ent.max_renew) + out->max_renewable_life = *ent.max_renew; + else + out->max_renewable_life = INT_MAX; + } + if(mask & KADM5_KEY_DATA){ + size_t i; + size_t n_keys = ent.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); + if (ret) + goto out; + ext = hdb_find_extension(&ent, choice_HDB_extension_data_hist_keys); + if (ext != NULL) + hist_keys = &ext->data.u.hist_keys; + + krb5_get_pw_salt(context->context, ent.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 = krb5_enomem(context->context); + goto out; + } + out->n_key_data = 0; + ret = copy_keyset_to_kadm5(context, ent.kvno, ent.keys.len, + ent.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 ); + } + assert(ret == 0); + if(mask & KADM5_TL_DATA) { + time_t last_pw_expire; + const HDB_Ext_PKINIT_acl *acl; + const HDB_Ext_Aliases *aliases; + const HDB_Ext_KeyRotation *kr; + heim_octet_string krb5_config; + + if (ent.etypes) { + krb5_data buf; + size_t len; + + ASN1_MALLOC_ENCODE(HDB_EncTypeList, buf.data, buf.length, + ent.etypes, &len, ret); + if (ret == 0) { + ret = add_tl_data(out, KRB5_TL_ETYPES, buf.data, buf.length); + free(buf.data); + } + if (ret) + goto out; + } + + ret = hdb_entry_get_pw_change_time(&ent, &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; + } + + ret = hdb_entry_get_krb5_config(&ent, &krb5_config); + if (ret == 0 && krb5_config.length) { + ret = add_tl_data(out, KRB5_TL_KRB5_CONFIG, krb5_config.data, + krb5_config.length); + 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; + + /* XXX But not if the client doesn't have ext-keys */ + ret = hdb_entry_get_password(context->context, + context->db, &ent, &pw); + if (ret == 0) { + ret = add_tl_data(out, KRB5_TL_PASSWORD, pw, strlen(pw) + 1); + free(pw); + if (ret) + goto out; + } + krb5_clear_error_message(context->context); + } + + ret = hdb_entry_get_pkinit_acl(&ent, &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; + } + + ret = hdb_entry_get_aliases(&ent, &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; + } + + ret = hdb_entry_get_key_rotation(context->context, &ent, &kr); + if (ret == 0 && kr) { + krb5_data buf; + size_t len; + + ASN1_MALLOC_ENCODE(HDB_Ext_KeyRotation, buf.data, buf.length, + kr, &len, ret); + if (ret == 0) + ret = add_tl_data(out, KRB5_TL_KEY_ROTATION, buf.data, buf.length); + free(buf.data); + } + } + + out: + if (ret) + kadm5_free_principal_ent(context, out); + hdb_free_entry(context->context, context->db, &ent); + + return _kadm5_error_code(ret); +} |