/* * 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" RCSID("$Id$"); struct modify_principal_hook_ctx { kadm5_server_context *context; enum kadm5_hook_stage stage; krb5_error_code code; kadm5_principal_ent_t princ; uint32_t mask; }; static krb5_error_code KRB5_LIB_CALL modify_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 modify_principal_hook_ctx *ctx = userctx; ret = ftable->modify(context, hookctx, ctx->stage, ctx->code, ctx->princ, ctx->mask); if (ret != 0 && ret != KRB5_PLUGIN_NO_HANDLE) _kadm5_s_set_hook_error_message(ctx->context, ret, "modify", 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 modify_principal_hook(kadm5_server_context *context, enum kadm5_hook_stage stage, krb5_error_code code, kadm5_principal_ent_t princ, uint32_t mask) { krb5_error_code ret; struct modify_principal_hook_ctx ctx; ctx.context = context; ctx.stage = stage; ctx.code = code; ctx.princ = princ; ctx.mask = mask; ret = _krb5_plugin_run_f(context->context, &kadm5_hook_plugin_data, 0, &ctx, modify_principal_hook_cb); if (ret == KRB5_PLUGIN_NO_HANDLE) ret = 0; return ret; } static kadm5_ret_t modify_principal(void *server_handle, kadm5_principal_ent_t princ, uint32_t mask, uint32_t forbidden_mask) { kadm5_server_context *context = server_handle; hdb_entry ent; kadm5_ret_t ret; memset(&ent, 0, sizeof(ent)); if((mask & forbidden_mask)) return KADM5_BAD_MASK; if((mask & KADM5_POLICY) && strcmp(princ->policy, "default") != 0) return KADM5_UNK_POLICY; 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) goto out; /* * NOTE: We do not use hdb_fetch_kvno() here, which means we'll * automatically reject modifications of would-be virtual principals. */ ret = context->db->hdb_fetch_kvno(context->context, context->db, princ->principal, HDB_F_DECRYPT|HDB_F_GET_ANY|HDB_F_ADMIN_DATA, 0, &ent); if (ret) goto out2; ret = modify_principal_hook(context, KADM5_HOOK_STAGE_PRECOMMIT, 0, princ, mask); if (ret) goto out3; /* * XXX Make sure that _kadm5_setup_entry() checks that the time of last * change in `ent' matches the one in `princ'. */ ret = _kadm5_setup_entry(context, &ent, mask, princ, mask, NULL, 0); if (ret) goto out3; ret = _kadm5_set_modifier(context, &ent); if (ret) goto out3; /* * If any keys are bogus, disallow the modify. If the keys were * bogus as stored in the HDB we could allow those through, but * distinguishing that case from a pre-1.6 client using add_enctype * without the get-keys privilege requires more work (mainly: checking that * the bogus keys in princ->key_data[] have corresponding bogus keys in ent * before calling _kadm5_setup_entry()). */ if ((mask & KADM5_KEY_DATA) && kadm5_some_keys_are_bogus(princ->n_key_data, princ->key_data)) { ret = KADM5_AUTH_GET_KEYS; /* Not quite appropriate, but it'll do */ goto out3; } ret = hdb_seal_keys(context->context, context->db, &ent); if (ret) goto out3; if ((mask & KADM5_POLICY)) { HDB_extension ext; memset(&ext, 0, sizeof(ext)); /* XXX should be TRUE, but we don't yet support policies */ ext.mandatory = FALSE; ext.data.element = choice_HDB_extension_data_policy; ext.data.u.policy = strdup(princ->policy); if (ext.data.u.policy == NULL) { ret = krb5_enomem(context->context); goto out3; } /* This calls free_HDB_extension(), freeing ext.data.u.policy */ ret = hdb_replace_extension(context->context, &ent, &ext); free(ext.data.u.policy); if (ret) goto out3; } /* This logs the change for iprop and writes to the HDB */ ret = kadm5_log_modify(context, &ent, mask | KADM5_MOD_NAME | KADM5_MOD_TIME); (void) modify_principal_hook(context, KADM5_HOOK_STAGE_POSTCOMMIT, ret, princ, mask); out3: hdb_free_entry(context->context, context->db, &ent); out2: (void) kadm5_log_end(context); out: if (!context->keep_open) { kadm5_ret_t ret2; ret2 = context->db->hdb_close(context->context, context->db); if (ret == 0 && ret2 != 0) ret = ret2; } return _kadm5_error_code(ret); } kadm5_ret_t kadm5_s_modify_principal(void *server_handle, kadm5_principal_ent_t princ, uint32_t mask) { return modify_principal(server_handle, princ, mask, KADM5_LAST_PWD_CHANGE | KADM5_MOD_TIME | KADM5_MOD_NAME | KADM5_MKVNO | KADM5_AUX_ATTRIBUTES | KADM5_LAST_SUCCESS | KADM5_LAST_FAILED); }