diff options
Diffstat (limited to 'third_party/heimdal/lib/kadm5/modify_s.c')
| -rw-r--r-- | third_party/heimdal/lib/kadm5/modify_s.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/kadm5/modify_s.c b/third_party/heimdal/lib/kadm5/modify_s.c new file mode 100644 index 0000000..2159caf --- /dev/null +++ b/third_party/heimdal/lib/kadm5/modify_s.c @@ -0,0 +1,215 @@ +/* + * 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); +} |