649 lines
16 KiB
C
649 lines
16 KiB
C
/*
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* Copyright (c) 1997 - 2000 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "kadm5_locl.h"
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netdb.h>
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RCSID("$Id: init_c.c,v 1.40 2000/12/31 08:00:23 assar Exp $");
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static void
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set_funcs(kadm5_client_context *c)
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{
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#define SET(C, F) (C)->funcs.F = kadm5 ## _c_ ## F
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SET(c, chpass_principal);
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SET(c, chpass_principal_with_key);
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SET(c, create_principal);
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SET(c, delete_principal);
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SET(c, destroy);
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SET(c, flush);
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SET(c, get_principal);
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SET(c, get_principals);
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SET(c, get_privs);
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SET(c, modify_principal);
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SET(c, randkey_principal);
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SET(c, rename_principal);
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}
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kadm5_ret_t
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_kadm5_c_init_context(kadm5_client_context **ctx,
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kadm5_config_params *params,
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krb5_context context)
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{
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krb5_error_code ret;
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char *colon;
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*ctx = malloc(sizeof(**ctx));
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if(*ctx == NULL)
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return ENOMEM;
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memset(*ctx, 0, sizeof(**ctx));
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krb5_add_et_list (context, initialize_kadm5_error_table_r);
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set_funcs(*ctx);
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(*ctx)->context = context;
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if(params->mask & KADM5_CONFIG_REALM)
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(*ctx)->realm = strdup(params->realm);
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else
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krb5_get_default_realm((*ctx)->context, &(*ctx)->realm);
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if(params->mask & KADM5_CONFIG_ADMIN_SERVER)
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(*ctx)->admin_server = strdup(params->admin_server);
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else {
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char **hostlist;
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ret = krb5_get_krb_admin_hst (context, &(*ctx)->realm, &hostlist);
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if (ret)
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return ret;
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(*ctx)->admin_server = strdup(*hostlist);
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krb5_free_krbhst (context, hostlist);
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}
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if ((*ctx)->admin_server == NULL)
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return ENOMEM;
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colon = strchr ((*ctx)->admin_server, ':');
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if (colon != NULL)
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*colon++ = '\0';
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(*ctx)->kadmind_port = 0;
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if(params->mask & KADM5_CONFIG_KADMIND_PORT)
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(*ctx)->kadmind_port = params->kadmind_port;
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else if (colon != NULL) {
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char *end;
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(*ctx)->kadmind_port = htons(strtol (colon, &end, 0));
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}
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if ((*ctx)->kadmind_port == 0)
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(*ctx)->kadmind_port = krb5_getportbyname (context, "kerberos-adm",
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"tcp", 749);
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return 0;
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}
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static krb5_error_code
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get_kadm_ticket(krb5_context context,
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krb5_ccache id,
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krb5_principal client,
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const char *server_name)
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{
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krb5_error_code ret;
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krb5_creds in, *out;
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memset(&in, 0, sizeof(in));
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in.client = client;
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ret = krb5_parse_name(context, server_name, &in.server);
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if(ret)
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return ret;
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ret = krb5_get_credentials(context, 0, id, &in, &out);
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if(ret == 0)
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krb5_free_creds(context, out);
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krb5_free_principal(context, in.server);
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return ret;
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}
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static krb5_error_code
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get_new_cache(krb5_context context,
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krb5_principal client,
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const char *password,
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krb5_prompter_fct prompter,
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const char *keytab,
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const char *server_name,
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krb5_ccache *ret_cache)
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{
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krb5_error_code ret;
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krb5_creds cred;
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krb5_get_init_creds_opt opt;
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krb5_ccache id;
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krb5_get_init_creds_opt_init (&opt);
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krb5_get_init_creds_opt_set_forwardable (&opt, FALSE);
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krb5_get_init_creds_opt_set_proxiable (&opt, FALSE);
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if(password == NULL && prompter == NULL) {
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krb5_keytab kt;
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if(keytab == NULL)
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ret = krb5_kt_default(context, &kt);
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else
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ret = krb5_kt_resolve(context, keytab, &kt);
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if(ret)
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return ret;
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ret = krb5_get_init_creds_keytab (context,
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&cred,
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client,
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kt,
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0,
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server_name,
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&opt);
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krb5_kt_close(context, kt);
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} else {
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ret = krb5_get_init_creds_password (context,
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&cred,
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client,
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password,
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prompter,
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NULL,
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0,
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server_name,
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&opt);
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}
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switch(ret){
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case 0:
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break;
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case KRB5_LIBOS_PWDINTR: /* don't print anything if it was just C-c:ed */
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case KRB5KRB_AP_ERR_BAD_INTEGRITY:
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case KRB5KRB_AP_ERR_MODIFIED:
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return KADM5_BAD_PASSWORD;
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default:
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return ret;
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}
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ret = krb5_cc_gen_new(context, &krb5_mcc_ops, &id);
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if(ret)
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return ret;
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ret = krb5_cc_initialize (context, id, cred.client);
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if (ret)
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return ret;
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ret = krb5_cc_store_cred (context, id, &cred);
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if (ret)
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return ret;
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krb5_free_creds_contents (context, &cred);
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*ret_cache = id;
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return 0;
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}
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static krb5_error_code
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get_cred_cache(krb5_context context,
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const char *client_name,
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const char *server_name,
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const char *password,
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krb5_prompter_fct prompter,
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const char *keytab,
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krb5_ccache ccache,
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krb5_ccache *ret_cache)
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{
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krb5_error_code ret;
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krb5_ccache id = NULL;
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krb5_principal default_client = NULL, client = NULL;
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/* treat empty password as NULL */
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if(password && *password == '\0')
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password = NULL;
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if(server_name == NULL)
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server_name = KADM5_ADMIN_SERVICE;
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if(client_name != NULL) {
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ret = krb5_parse_name(context, client_name, &client);
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if(ret)
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return ret;
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}
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if(password != NULL || prompter != NULL) {
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/* get principal from default cache, ok if this doesn't work */
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ret = krb5_cc_default(context, &id);
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if(ret == 0) {
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ret = krb5_cc_get_principal(context, id, &default_client);
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if(ret) {
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krb5_cc_close(context, id);
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id = NULL;
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}
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}
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if(client == NULL)
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client = default_client;
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if(client == NULL) {
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const char *user;
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user = get_default_username ();
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if(user == NULL)
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return KADM5_FAILURE;
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ret = krb5_make_principal(context, &client,
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NULL, user, "admin", NULL);
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if(ret)
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return ret;
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}
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if(client != default_client) {
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krb5_free_principal(context, default_client);
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default_client = NULL;
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if (id != NULL) {
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krb5_cc_close(context, id);
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id = NULL;
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}
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}
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} else if(ccache != NULL)
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id = ccache;
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if(id && (default_client == NULL ||
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krb5_principal_compare(context, client, default_client))) {
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ret = get_kadm_ticket(context, id, client, server_name);
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if(ret == 0) {
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*ret_cache = id;
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krb5_free_principal(context, default_client);
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if (default_client != client)
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krb5_free_principal(context, client);
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return 0;
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}
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if(ccache != NULL)
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/* couldn't get ticket from cache */
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return -1;
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}
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/* get creds via AS request */
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if(id)
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krb5_cc_close(context, id);
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if (client != default_client)
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krb5_free_principal(context, default_client);
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ret = get_new_cache(context, client, password, prompter, keytab,
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server_name, ret_cache);
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krb5_free_principal(context, client);
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return ret;
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}
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static kadm5_ret_t
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kadm_connect(kadm5_client_context *ctx)
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{
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kadm5_ret_t ret;
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krb5_principal server;
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krb5_ccache cc;
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int s;
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struct addrinfo *ai, *a;
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struct addrinfo hints;
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int error;
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char portstr[NI_MAXSERV];
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char *hostname, *slash;
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krb5_context context = ctx->context;
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memset (&hints, 0, sizeof(hints));
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_protocol = IPPROTO_TCP;
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snprintf (portstr, sizeof(portstr), "%u", ntohs(ctx->kadmind_port));
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hostname = ctx->admin_server;
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slash = strchr (hostname, '/');
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if (slash != NULL)
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hostname = slash + 1;
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error = getaddrinfo (hostname, portstr, &hints, &ai);
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if (error)
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return KADM5_BAD_SERVER_NAME;
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for (a = ai; a != NULL; a = a->ai_next) {
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s = socket (a->ai_family, a->ai_socktype, a->ai_protocol);
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if (s < 0)
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continue;
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if (connect (s, a->ai_addr, a->ai_addrlen) < 0) {
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krb5_warn (context, errno, "connect(%s)", hostname);
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close (s);
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continue;
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}
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break;
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}
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if (a == NULL) {
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freeaddrinfo (ai);
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krb5_warnx (context, "failed to contact %s", hostname);
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return KADM5_FAILURE;
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}
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ret = get_cred_cache(context, ctx->client_name, ctx->service_name,
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NULL, ctx->prompter, ctx->keytab,
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ctx->ccache, &cc);
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if(ret) {
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freeaddrinfo (ai);
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close(s);
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return ret;
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}
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ret = krb5_parse_name(context, KADM5_ADMIN_SERVICE, &server);
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if(ret) {
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freeaddrinfo (ai);
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if(ctx->ccache == NULL)
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krb5_cc_close(context, cc);
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close(s);
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return ret;
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}
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ctx->ac = NULL;
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ret = krb5_sendauth(context, &ctx->ac, &s,
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KADMIN_APPL_VERSION, NULL,
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server, AP_OPTS_MUTUAL_REQUIRED,
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NULL, NULL, cc, NULL, NULL, NULL);
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if(ret == 0) {
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krb5_data params;
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ret = _kadm5_marshal_params(context, ctx->realm_params, ¶ms);
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ret = krb5_write_priv_message(context, ctx->ac, &s, ¶ms);
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krb5_data_free(¶ms);
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if(ret) {
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freeaddrinfo (ai);
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close(s);
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if(ctx->ccache == NULL)
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krb5_cc_close(context, cc);
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return ret;
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}
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} else if(ret == KRB5_SENDAUTH_BADAPPLVERS) {
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close(s);
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s = socket (a->ai_family, a->ai_socktype, a->ai_protocol);
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if (s < 0) {
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freeaddrinfo (ai);
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return errno;
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}
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if (connect (s, a->ai_addr, a->ai_addrlen) < 0) {
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close (s);
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freeaddrinfo (ai);
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return errno;
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}
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ret = krb5_sendauth(context, &ctx->ac, &s,
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KADMIN_OLD_APPL_VERSION, NULL,
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server, AP_OPTS_MUTUAL_REQUIRED,
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NULL, NULL, cc, NULL, NULL, NULL);
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}
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freeaddrinfo (ai);
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if(ret) {
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close(s);
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return ret;
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}
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krb5_free_principal(context, server);
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if(ctx->ccache == NULL)
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krb5_cc_close(context, cc);
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if(ret) {
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close(s);
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return ret;
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}
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ctx->sock = s;
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return 0;
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}
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kadm5_ret_t
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_kadm5_connect(void *handle)
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{
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kadm5_client_context *ctx = handle;
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if(ctx->sock == -1)
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return kadm_connect(ctx);
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return 0;
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}
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static kadm5_ret_t
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kadm5_c_init_with_context(krb5_context context,
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const char *client_name,
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const char *password,
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krb5_prompter_fct prompter,
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const char *keytab,
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krb5_ccache ccache,
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const char *service_name,
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kadm5_config_params *realm_params,
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unsigned long struct_version,
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unsigned long api_version,
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void **server_handle)
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{
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kadm5_ret_t ret;
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kadm5_client_context *ctx;
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krb5_ccache cc;
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ret = _kadm5_c_init_context(&ctx, realm_params, context);
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if(ret)
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return ret;
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if(password != NULL && *password != '\0') {
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ret = get_cred_cache(context, client_name, service_name,
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password, prompter, keytab, ccache, &cc);
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if(ret)
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return ret; /* XXX */
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ccache = cc;
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}
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if (client_name != NULL)
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ctx->client_name = strdup(client_name);
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else
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ctx->client_name = NULL;
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if (service_name != NULL)
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ctx->service_name = strdup(service_name);
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else
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ctx->service_name = NULL;
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ctx->prompter = prompter;
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ctx->keytab = keytab;
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ctx->ccache = ccache;
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ctx->realm_params = realm_params;
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ctx->sock = -1;
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*server_handle = ctx;
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return 0;
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}
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static kadm5_ret_t
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init_context(const char *client_name,
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const char *password,
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krb5_prompter_fct prompter,
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const char *keytab,
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krb5_ccache ccache,
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const char *service_name,
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kadm5_config_params *realm_params,
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unsigned long struct_version,
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unsigned long api_version,
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void **server_handle)
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{
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krb5_context context;
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kadm5_ret_t ret;
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kadm5_server_context *ctx;
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ret = krb5_init_context(&context);
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if (ret)
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return ret;
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ret = kadm5_c_init_with_context(context,
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client_name,
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password,
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prompter,
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keytab,
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ccache,
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service_name,
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realm_params,
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struct_version,
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api_version,
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server_handle);
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if(ret){
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krb5_free_context(context);
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return ret;
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}
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ctx = *server_handle;
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ctx->my_context = 1;
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return 0;
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}
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kadm5_ret_t
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kadm5_c_init_with_password_ctx(krb5_context context,
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const char *client_name,
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const char *password,
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const char *service_name,
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kadm5_config_params *realm_params,
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unsigned long struct_version,
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unsigned long api_version,
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void **server_handle)
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{
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return kadm5_c_init_with_context(context,
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client_name,
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password,
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krb5_prompter_posix,
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NULL,
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NULL,
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service_name,
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realm_params,
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struct_version,
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api_version,
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server_handle);
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|
}
|
|
|
|
kadm5_ret_t
|
|
kadm5_c_init_with_password(const char *client_name,
|
|
const char *password,
|
|
const char *service_name,
|
|
kadm5_config_params *realm_params,
|
|
unsigned long struct_version,
|
|
unsigned long api_version,
|
|
void **server_handle)
|
|
{
|
|
return init_context(client_name,
|
|
password,
|
|
krb5_prompter_posix,
|
|
NULL,
|
|
NULL,
|
|
service_name,
|
|
realm_params,
|
|
struct_version,
|
|
api_version,
|
|
server_handle);
|
|
}
|
|
|
|
kadm5_ret_t
|
|
kadm5_c_init_with_skey_ctx(krb5_context context,
|
|
const char *client_name,
|
|
const char *keytab,
|
|
const char *service_name,
|
|
kadm5_config_params *realm_params,
|
|
unsigned long struct_version,
|
|
unsigned long api_version,
|
|
void **server_handle)
|
|
{
|
|
return kadm5_c_init_with_context(context,
|
|
client_name,
|
|
NULL,
|
|
NULL,
|
|
keytab,
|
|
NULL,
|
|
service_name,
|
|
realm_params,
|
|
struct_version,
|
|
api_version,
|
|
server_handle);
|
|
}
|
|
|
|
|
|
kadm5_ret_t
|
|
kadm5_c_init_with_skey(const char *client_name,
|
|
const char *keytab,
|
|
const char *service_name,
|
|
kadm5_config_params *realm_params,
|
|
unsigned long struct_version,
|
|
unsigned long api_version,
|
|
void **server_handle)
|
|
{
|
|
return init_context(client_name,
|
|
NULL,
|
|
NULL,
|
|
keytab,
|
|
NULL,
|
|
service_name,
|
|
realm_params,
|
|
struct_version,
|
|
api_version,
|
|
server_handle);
|
|
}
|
|
|
|
kadm5_ret_t
|
|
kadm5_c_init_with_creds_ctx(krb5_context context,
|
|
const char *client_name,
|
|
krb5_ccache ccache,
|
|
const char *service_name,
|
|
kadm5_config_params *realm_params,
|
|
unsigned long struct_version,
|
|
unsigned long api_version,
|
|
void **server_handle)
|
|
{
|
|
return kadm5_c_init_with_context(context,
|
|
client_name,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
ccache,
|
|
service_name,
|
|
realm_params,
|
|
struct_version,
|
|
api_version,
|
|
server_handle);
|
|
}
|
|
|
|
kadm5_ret_t
|
|
kadm5_c_init_with_creds(const char *client_name,
|
|
krb5_ccache ccache,
|
|
const char *service_name,
|
|
kadm5_config_params *realm_params,
|
|
unsigned long struct_version,
|
|
unsigned long api_version,
|
|
void **server_handle)
|
|
{
|
|
return init_context(client_name,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
ccache,
|
|
service_name,
|
|
realm_params,
|
|
struct_version,
|
|
api_version,
|
|
server_handle);
|
|
}
|
|
|
|
#if 0
|
|
kadm5_ret_t
|
|
kadm5_init(char *client_name, char *pass,
|
|
char *service_name,
|
|
kadm5_config_params *realm_params,
|
|
unsigned long struct_version,
|
|
unsigned long api_version,
|
|
void **server_handle)
|
|
{
|
|
}
|
|
#endif
|
|
|