diff options
Diffstat (limited to 'third_party/heimdal/lib/kadm5/setkey3_s.c')
| -rw-r--r-- | third_party/heimdal/lib/kadm5/setkey3_s.c | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/kadm5/setkey3_s.c b/third_party/heimdal/lib/kadm5/setkey3_s.c new file mode 100644 index 00000000000..2f8eda54c09 --- /dev/null +++ b/third_party/heimdal/lib/kadm5/setkey3_s.c @@ -0,0 +1,220 @@ +/* + * Copyright (c) 1997-2001, 2003, 2005-2006 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 "kadm5_locl.h" + +struct setkey_principal_hook_ctx { + kadm5_server_context *context; + enum kadm5_hook_stage stage; + krb5_error_code code; + krb5_const_principal princ; + uint32_t flags; + size_t n_ks_tuple; + krb5_key_salt_tuple *ks_tuple; + size_t n_keys; + krb5_keyblock *keys; +}; + +static krb5_error_code KRB5_LIB_CALL +setkey_principal_hook_cb(krb5_context context, + const void *hook, + void *hookctx, + void *userctx) +{ + krb5_error_code ret; + const struct kadm5_hook_ftable *ftable = hook; + struct setkey_principal_hook_ctx *ctx = userctx; + + ret = ftable->set_keys(context, hookctx, + ctx->stage, ctx->code, + ctx->princ, ctx->flags, + ctx->n_ks_tuple, ctx->ks_tuple, + ctx->n_keys, ctx->keys); + if (ret != 0 && ret != KRB5_PLUGIN_NO_HANDLE) + _kadm5_s_set_hook_error_message(ctx->context, ret, "setkey", + hook, ctx->stage); + + /* only pre-commit plugins can abort */ + if (ret == 0 || ctx->stage == KADM5_HOOK_STAGE_POSTCOMMIT) + ret = KRB5_PLUGIN_NO_HANDLE; + + return ret; +} + +static kadm5_ret_t +setkey_principal_hook(kadm5_server_context *context, + enum kadm5_hook_stage stage, + krb5_error_code code, + krb5_const_principal princ, + uint32_t flags, + size_t n_ks_tuple, + krb5_key_salt_tuple *ks_tuple, + size_t n_keys, + krb5_keyblock *keyblocks) +{ + krb5_error_code ret; + struct setkey_principal_hook_ctx ctx; + + ctx.context = context; + ctx.stage = stage; + ctx.code = code; + ctx.princ = princ; + ctx.flags = flags; + ctx.n_ks_tuple = n_ks_tuple; + ctx.ks_tuple = ks_tuple; + ctx.n_keys = n_keys; + ctx.keys = keyblocks; + + ret = _krb5_plugin_run_f(context->context, &kadm5_hook_plugin_data, + 0, &ctx, setkey_principal_hook_cb); + if (ret == KRB5_PLUGIN_NO_HANDLE) + ret = 0; + + return ret; +} + +/** + * Server-side function to set new keys for a principal. + */ +kadm5_ret_t +kadm5_s_setkey_principal_3(void *server_handle, + krb5_principal princ, + krb5_boolean keepold, + int n_ks_tuple, + krb5_key_salt_tuple *ks_tuple, + krb5_keyblock *keyblocks, int n_keys) +{ + kadm5_server_context *context = server_handle; + hdb_entry_ex ent; + kadm5_ret_t ret = 0; + size_t i; + + memset(&ent, 0, sizeof(ent)); + if (!context->keep_open) + ret = context->db->hdb_open(context->context, context->db, O_RDWR, 0); + if (ret) + return ret; + + ret = kadm5_log_init(context); + if (ret) { + if (!context->keep_open) + context->db->hdb_close(context->context, context->db); + return ret; + } + + /* NOTE: We do not use hdb_fetch_kvno() here (maybe we should?) */ + ret = context->db->hdb_fetch_kvno(context->context, context->db, princ, + HDB_F_DECRYPT|HDB_F_GET_ANY|HDB_F_ADMIN_DATA, + 0, &ent); + if (ret) { + (void) kadm5_log_end(context); + if (!context->keep_open) + context->db->hdb_close(context->context, context->db); + return ret; + } + + ret = setkey_principal_hook(context, KADM5_HOOK_STAGE_PRECOMMIT, 0, + princ, keepold ? KADM5_HOOK_FLAG_KEEPOLD : 0, + n_ks_tuple, ks_tuple, n_keys, keyblocks); + if (ret) { + (void) kadm5_log_end(context); + if (!context->keep_open) + context->db->hdb_close(context->context, context->db); + return ret; + } + + if (keepold) { + ret = hdb_add_current_keys_to_history(context->context, &ent.entry); + } else + ret = hdb_clear_extension(context->context, &ent.entry, + choice_HDB_extension_data_hist_keys); + + /* + * Though in practice all real calls to this function will pass an empty + * ks_tuple, and cannot in any case employ any salts that require + * additional data, we go the extra mile to set any requested salt type + * along with a zero length salt value. While we're at it we check that + * each ks_tuple's enctype matches the corresponding key enctype. + */ + if (ret == 0) { + free_Keys(&ent.entry.keys); + for (i = 0; i < n_keys; ++i) { + Key k; + Salt s; + + k.mkvno = 0; + k.key = keyblocks[i]; + if (n_ks_tuple == 0) + k.salt = 0; + else { + if (ks_tuple[i].ks_enctype != keyblocks[i].keytype) { + ret = KADM5_SETKEY3_ETYPE_MISMATCH; + break; + } + s.type = ks_tuple[i].ks_salttype; + s.salt.data = 0; + s.opaque = 0; + k.salt = &s; + } + if ((ret = add_Keys(&ent.entry.keys, &k)) != 0) + break; + } + } + + if (ret == 0) { + ent.entry.kvno++; + ent.entry.flags.require_pwchange = 0; + hdb_entry_set_pw_change_time(context->context, &ent.entry, 0); + hdb_entry_clear_password(context->context, &ent.entry); + + if ((ret = hdb_seal_keys(context->context, context->db, + &ent.entry)) == 0 + && (ret = _kadm5_set_modifier(context, &ent.entry)) == 0 + && (ret = _kadm5_bump_pw_expire(context, &ent.entry)) == 0) + ret = kadm5_log_modify(context, &ent.entry, + KADM5_ATTRIBUTES | KADM5_PRINCIPAL | + KADM5_MOD_NAME | KADM5_MOD_TIME | + KADM5_KEY_DATA | KADM5_KVNO | + KADM5_PW_EXPIRATION | KADM5_TL_DATA); + } + + (void) setkey_principal_hook(context, KADM5_HOOK_STAGE_POSTCOMMIT, ret, + princ, keepold, n_ks_tuple, ks_tuple, + n_keys, keyblocks); + + hdb_free_entry(context->context, &ent); + (void) kadm5_log_end(context); + if (!context->keep_open) + context->db->hdb_close(context->context, context->db); + return _kadm5_error_code(ret); +} |