/*
- * Copyright (c) 1997 - 2007 Kungliga Tekniska Högskolan
- * (Royal Institute of Technology, Stockholm, Sweden).
- * All rights reserved.
+ * Copyright (c) 1997 - 2008 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:
+ * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
*
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
*
- * 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.
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
*
- * 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.
+ * 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.
*
- * 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.
+ * 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"
-RCSID("$Id: init_creds_pw.c 21428 2007-07-10 12:31:58Z lha $");
-
typedef struct krb5_get_init_creds_ctx {
KDCOptions flags;
krb5_creds cred;
krb5_addresses *addrs;
krb5_enctype *etypes;
krb5_preauthtype *pre_auth_types;
- const char *in_tkt_service;
+ char *in_tkt_service;
unsigned nonce;
unsigned pk_nonce;
AS_REQ as_req;
int pa_counter;
- const char *password;
- krb5_s2k_proc key_proc;
+ /* password and keytab_data is freed on completion */
+ char *password;
+ krb5_keytab_key_proc_args *keytab_data;
+
+ krb5_pointer *keyseed;
+ krb5_s2k_proc keyproc;
krb5_get_init_creds_tristate req_pac;
krb5_pk_init_ctx pk_init_ctx;
int ic_flags;
+
+ int used_pa_types;
+#define USED_PKINIT 1
+#define USED_PKINIT_W2K 2
+#define USED_ENC_TS_GUESS 4
+#define USED_ENC_TS_INFO 8
+
+ METHOD_DATA md;
+ KRB_ERROR error;
+ AS_REP as_rep;
+ EncKDCRepPart enc_part;
+
+ krb5_prompter_fct prompter;
+ void *prompter_data;
+
+ struct pa_info_data *ppaid;
+
} krb5_get_init_creds_ctx;
-static krb5_error_code
-default_s2k_func(krb5_context context, krb5_enctype type,
+
+struct pa_info_data {
+ krb5_enctype etype;
+ krb5_salt salt;
+ krb5_data *s2kparams;
+};
+
+static void
+free_paid(krb5_context context, struct pa_info_data *ppaid)
+{
+ krb5_free_salt(context, ppaid->salt);
+ if (ppaid->s2kparams)
+ krb5_free_data(context, ppaid->s2kparams);
+}
+
+static krb5_error_code KRB5_CALLCONV
+default_s2k_func(krb5_context context, krb5_enctype type,
krb5_const_pointer keyseed,
krb5_salt salt, krb5_data *s2kparms,
krb5_keyblock **key)
krb5_data password;
krb5_data opaque;
+ _krb5_debug(context, 5, "krb5_get_init_creds: using default_s2k_func");
+
password.data = rk_UNCONST(keyseed);
password.length = strlen(keyseed);
if (s2kparms)
opaque = *s2kparms;
else
krb5_data_zero(&opaque);
-
+
*key = malloc(sizeof(**key));
if (*key == NULL)
return ENOMEM;
}
static void
-free_init_creds_ctx(krb5_context context, krb5_get_init_creds_ctx *ctx)
+free_init_creds_ctx(krb5_context context, krb5_init_creds_context ctx)
{
if (ctx->etypes)
free(ctx->etypes);
if (ctx->pre_auth_types)
free (ctx->pre_auth_types);
+ if (ctx->in_tkt_service)
+ free(ctx->in_tkt_service);
+ if (ctx->keytab_data)
+ free(ctx->keytab_data);
+ if (ctx->password) {
+ memset(ctx->password, 0, strlen(ctx->password));
+ free(ctx->password);
+ }
+ krb5_data_free(&ctx->req_buffer);
+ krb5_free_cred_contents(context, &ctx->cred);
+ free_METHOD_DATA(&ctx->md);
+ free_AS_REP(&ctx->as_rep);
+ free_EncKDCRepPart(&ctx->enc_part);
+ free_KRB_ERROR(&ctx->error);
free_AS_REQ(&ctx->as_req);
- memset(&ctx->as_req, 0, sizeof(ctx->as_req));
+ if (ctx->ppaid) {
+ free_paid(context, ctx->ppaid);
+ free(ctx->ppaid);
+ }
+ memset(ctx, 0, sizeof(*ctx));
}
static int
krb5_creds *cred,
krb5_principal client,
krb5_deltat start_time,
- const char *in_tkt_service,
krb5_get_init_creds_opt *options)
{
krb5_error_code ret;
- krb5_const_realm client_realm;
int tmp;
krb5_timestamp now;
krb5_timeofday (context, &now);
memset (cred, 0, sizeof(*cred));
-
+
if (client)
krb5_copy_principal(context, client, &cred->client);
else {
goto out;
}
- client_realm = krb5_principal_get_realm (context, cred->client);
-
if (start_time)
cred->times.starttime = now + start_time;
cred->times.renew_till = now + options->renew_life;
}
- if (in_tkt_service) {
- krb5_realm server_realm;
-
- ret = krb5_parse_name (context, in_tkt_service, &cred->server);
- if (ret)
- goto out;
- server_realm = strdup (client_realm);
- free (*krb5_princ_realm(context, cred->server));
- krb5_princ_set_realm (context, cred->server, &server_realm);
- } else {
- ret = krb5_make_principal(context, &cred->server,
- client_realm, KRB5_TGS_NAME, client_realm,
- NULL);
- if (ret)
- goto out;
- }
return 0;
out:
const char *str,
time_t now)
{
- char *p;
-
- asprintf (&p, "%s%s", str, ctime(&now));
- (*prompter) (context, data, NULL, p, 0, NULL);
- free (p);
+ char *p = NULL;
+
+ if (asprintf(&p, "%s%s", str, ctime(&now)) < 0 || p == NULL)
+ return;
+ (*prompter)(context, data, NULL, p, 0, NULL);
+ free(p);
}
/*
- * Parse the last_req data and show it to the user if it's interesting
+ * Check the context, and in the case there is a expiration warning,
+ * use the prompter to print the warning.
+ *
+ * @param context A Kerberos 5 context.
+ * @param options An GIC options structure
+ * @param ctx The krb5_init_creds_context check for expiration.
*/
-static void
-print_expire (krb5_context context,
- krb5_const_realm realm,
- krb5_kdc_rep *rep,
- krb5_prompter_fct prompter,
- krb5_data *data)
+static krb5_error_code
+process_last_request(krb5_context context,
+ krb5_get_init_creds_opt *options,
+ krb5_init_creds_context ctx)
{
- int i;
- LastReq *lr = &rep->enc_part.last_req;
+ krb5_const_realm realm;
+ LastReq *lr;
+ krb5_boolean reported = FALSE;
krb5_timestamp sec;
time_t t;
- krb5_boolean reported = FALSE;
+ size_t i;
+
+ /*
+ * First check if there is a API consumer.
+ */
+
+ realm = krb5_principal_get_realm (context, ctx->cred.client);
+ lr = &ctx->enc_part.last_req;
+
+ if (options && options->opt_private && options->opt_private->lr.func) {
+ krb5_last_req_entry **lre;
+
+ lre = calloc(lr->len + 1, sizeof(**lre));
+ if (lre == NULL) {
+ krb5_set_error_message(context, ENOMEM,
+ N_("malloc: out of memory", ""));
+ return ENOMEM;
+ }
+ for (i = 0; i < lr->len; i++) {
+ lre[i] = calloc(1, sizeof(*lre[i]));
+ if (lre[i] == NULL)
+ break;
+ lre[i]->lr_type = lr->val[i].lr_type;
+ lre[i]->value = lr->val[i].lr_value;
+ }
+
+ (*options->opt_private->lr.func)(context, lre,
+ options->opt_private->lr.ctx);
+
+ for (i = 0; i < lr->len; i++)
+ free(lre[i]);
+ free(lre);
+ }
+
+ /*
+ * Now check if we should prompt the user
+ */
+
+ if (ctx->prompter == NULL)
+ return 0;
krb5_timeofday (context, &sec);
if (lr->val[i].lr_value <= t) {
switch (abs(lr->val[i].lr_type)) {
case LR_PW_EXPTIME :
- report_expiration(context, prompter, data,
+ report_expiration(context, ctx->prompter,
+ ctx->prompter_data,
"Your password will expire at ",
lr->val[i].lr_value);
reported = TRUE;
break;
case LR_ACCT_EXPTIME :
- report_expiration(context, prompter, data,
+ report_expiration(context, ctx->prompter,
+ ctx->prompter_data,
"Your account will expire at ",
lr->val[i].lr_value);
reported = TRUE;
}
if (!reported
- && rep->enc_part.key_expiration
- && *rep->enc_part.key_expiration <= t) {
- report_expiration(context, prompter, data,
+ && ctx->enc_part.key_expiration
+ && *ctx->enc_part.key_expiration <= t) {
+ report_expiration(context, ctx->prompter,
+ ctx->prompter_data,
"Your password/account will expire at ",
- *rep->enc_part.key_expiration);
+ *ctx->enc_part.key_expiration);
}
+ return 0;
}
static krb5_addresses no_addrs = { 0, NULL };
get_init_creds_common(krb5_context context,
krb5_principal client,
krb5_deltat start_time,
- const char *in_tkt_service,
krb5_get_init_creds_opt *options,
- krb5_get_init_creds_ctx *ctx)
+ krb5_init_creds_context ctx)
{
- krb5_get_init_creds_opt default_opt;
+ krb5_get_init_creds_opt *default_opt = NULL;
krb5_error_code ret;
krb5_enctype *etypes;
krb5_preauthtype *pre_auth_types;
memset(ctx, 0, sizeof(*ctx));
if (options == NULL) {
- krb5_get_init_creds_opt_init (&default_opt);
- options = &default_opt;
- } else {
- _krb5_get_init_creds_opt_free_krb5_error(options);
+ const char *realm = krb5_principal_get_realm(context, client);
+
+ krb5_get_init_creds_opt_alloc (context, &default_opt);
+ options = default_opt;
+ krb5_get_init_creds_opt_set_default_flags(context, NULL, realm, options);
}
if (options->opt_private) {
- ctx->password = options->opt_private->password;
- ctx->key_proc = options->opt_private->key_proc;
+ if (options->opt_private->password) {
+ ret = krb5_init_creds_set_password(context, ctx,
+ options->opt_private->password);
+ if (ret)
+ goto out;
+ }
+
+ ctx->keyproc = options->opt_private->key_proc;
ctx->req_pac = options->opt_private->req_pac;
ctx->pk_init_ctx = options->opt_private->pk_init_ctx;
ctx->ic_flags = options->opt_private->flags;
} else
ctx->req_pac = KRB5_INIT_CREDS_TRISTATE_UNSET;
- if (ctx->key_proc == NULL)
- ctx->key_proc = default_s2k_func;
+ if (ctx->keyproc == NULL)
+ ctx->keyproc = default_s2k_func;
- if (ctx->ic_flags & KRB5_INIT_CREDS_CANONICALIZE)
+ /* Enterprise name implicitly turns on canonicalize */
+ if ((ctx->ic_flags & KRB5_INIT_CREDS_CANONICALIZE) ||
+ krb5_principal_get_type(context, client) == KRB5_NT_ENTERPRISE_PRINCIPAL)
ctx->flags.canonicalize = 1;
ctx->pre_auth_types = NULL;
ctx->addrs = NULL;
ctx->etypes = NULL;
ctx->pre_auth_types = NULL;
- ctx->in_tkt_service = in_tkt_service;
- ret = init_cred (context, &ctx->cred, client, start_time,
- in_tkt_service, options);
- if (ret)
+ ret = init_cred(context, &ctx->cred, client, start_time, options);
+ if (ret) {
+ if (default_opt)
+ krb5_get_init_creds_opt_free(context, default_opt);
return ret;
+ }
+
+ ret = krb5_init_creds_set_service(context, ctx, NULL);
+ if (ret)
+ goto out;
if (options->flags & KRB5_GET_INIT_CREDS_OPT_FORWARDABLE)
ctx->flags.forwardable = options->forwardable;
}
}
if (options->flags & KRB5_GET_INIT_CREDS_OPT_ETYPE_LIST) {
+ if (ctx->etypes)
+ free(ctx->etypes);
+
etypes = malloc((options->etype_list_length + 1)
* sizeof(krb5_enctype));
if (etypes == NULL) {
- krb5_set_error_string(context, "malloc: out of memory");
- return ENOMEM;
+ ret = ENOMEM;
+ krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
+ goto out;
}
memcpy (etypes, options->etype_list,
options->etype_list_length * sizeof(krb5_enctype));
pre_auth_types = malloc((options->preauth_list_length + 1)
* sizeof(krb5_preauthtype));
if (pre_auth_types == NULL) {
- krb5_set_error_string(context, "malloc: out of memory");
- return ENOMEM;
+ ret = ENOMEM;
+ krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
+ goto out;
}
memcpy (pre_auth_types, options->preauth_list,
options->preauth_list_length * sizeof(krb5_preauthtype));
pre_auth_types[options->preauth_list_length] = KRB5_PADATA_NONE;
ctx->pre_auth_types = pre_auth_types;
}
- if (options->flags & KRB5_GET_INIT_CREDS_OPT_SALT)
- ; /* XXX */
if (options->flags & KRB5_GET_INIT_CREDS_OPT_ANONYMOUS)
ctx->flags.request_anonymous = options->anonymous;
+ if (default_opt)
+ krb5_get_init_creds_opt_free(context, default_opt);
return 0;
+ out:
+ if (default_opt)
+ krb5_get_init_creds_opt_free(context, default_opt);
+ return ret;
}
static krb5_error_code
krb5_data result_code_string;
krb5_data result_string;
char *p;
- krb5_get_init_creds_opt options;
+ krb5_get_init_creds_opt *options;
memset (&cpw_cred, 0, sizeof(cpw_cred));
- krb5_get_init_creds_opt_init (&options);
- krb5_get_init_creds_opt_set_tkt_life (&options, 60);
- krb5_get_init_creds_opt_set_forwardable (&options, FALSE);
- krb5_get_init_creds_opt_set_proxiable (&options, FALSE);
+ ret = krb5_get_init_creds_opt_alloc(context, &options);
+ if (ret)
+ return ret;
+ krb5_get_init_creds_opt_set_tkt_life (options, 60);
+ krb5_get_init_creds_opt_set_forwardable (options, FALSE);
+ krb5_get_init_creds_opt_set_proxiable (options, FALSE);
if (old_options && old_options->flags & KRB5_GET_INIT_CREDS_OPT_PREAUTH_LIST)
- krb5_get_init_creds_opt_set_preauth_list (&options,
+ krb5_get_init_creds_opt_set_preauth_list (options,
old_options->preauth_list,
- old_options->preauth_list_length);
+ old_options->preauth_list_length);
krb5_data_zero (&result_code_string);
krb5_data_zero (&result_string);
data,
0,
"kadmin/changepw",
- &options);
+ options);
+ krb5_get_init_creds_opt_free(context, options);
if (ret)
goto out;
memset (buf1, 0, sizeof(buf1));
memset (buf2, 0, sizeof(buf2));
}
-
- ret = krb5_change_password (context,
- &cpw_cred,
- buf1,
- &result_code,
- &result_code_string,
- &result_string);
+
+ ret = krb5_set_password (context,
+ &cpw_cred,
+ buf1,
+ client,
+ &result_code,
+ &result_code_string,
+ &result_string);
if (ret)
goto out;
- asprintf (&p, "%s: %.*s\n",
- result_code ? "Error" : "Success",
- (int)result_string.length,
- result_string.length > 0 ? (char*)result_string.data : "");
+ if (asprintf(&p, "%s: %.*s\n",
+ result_code ? "Error" : "Success",
+ (int)result_string.length,
+ result_string.length > 0 ? (char*)result_string.data : "") < 0)
+ {
+ ret = ENOMEM;
+ goto out;
+ }
+
+ /* return the result */
+ (*prompter) (context, data, NULL, p, 0, NULL);
- ret = (*prompter) (context, data, NULL, p, 0, NULL);
free (p);
if (result_code == 0) {
strlcpy (newpw, buf1, newpw_sz);
ret = 0;
} else {
- krb5_set_error_string (context, "failed changing password");
ret = ENOTTY;
+ krb5_set_error_message(context, ret,
+ N_("failed changing password", ""));
}
out:
return ret;
}
-krb5_error_code KRB5_LIB_FUNCTION
+
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_keyblock_key_proc (krb5_context context,
krb5_keytype type,
krb5_data *salt,
return krb5_copy_keyblock (context, keyseed, key);
}
-krb5_error_code KRB5_LIB_FUNCTION
-krb5_get_init_creds_keytab(krb5_context context,
- krb5_creds *creds,
- krb5_principal client,
- krb5_keytab keytab,
- krb5_deltat start_time,
- const char *in_tkt_service,
- krb5_get_init_creds_opt *options)
-{
- krb5_get_init_creds_ctx ctx;
- krb5_error_code ret;
- krb5_keytab_key_proc_args *a;
-
- ret = get_init_creds_common(context, client, start_time,
- in_tkt_service, options, &ctx);
- if (ret)
- goto out;
-
- a = malloc (sizeof(*a));
- if (a == NULL) {
- krb5_set_error_string(context, "malloc: out of memory");
- ret = ENOMEM;
- goto out;
- }
- a->principal = ctx.cred.client;
- a->keytab = keytab;
-
- ret = krb5_get_in_cred (context,
- KDCOptions2int(ctx.flags),
- ctx.addrs,
- ctx.etypes,
- ctx.pre_auth_types,
- NULL,
- krb5_keytab_key_proc,
- a,
- NULL,
- NULL,
- &ctx.cred,
- NULL);
- free (a);
-
- if (ret == 0 && creds)
- *creds = ctx.cred;
- else
- krb5_free_cred_contents (context, &ctx.cred);
-
- out:
- free_init_creds_ctx(context, &ctx);
- return ret;
-}
-
/*
*
*/
static krb5_error_code
-init_creds_init_as_req (krb5_context context,
- KDCOptions opts,
- const krb5_creds *creds,
- const krb5_addresses *addrs,
- const krb5_enctype *etypes,
- AS_REQ *a)
+init_as_req (krb5_context context,
+ KDCOptions opts,
+ const krb5_creds *creds,
+ const krb5_addresses *addrs,
+ const krb5_enctype *etypes,
+ AS_REQ *a)
{
krb5_error_code ret;
a->req_body.cname = malloc(sizeof(*a->req_body.cname));
if (a->req_body.cname == NULL) {
ret = ENOMEM;
- krb5_set_error_string(context, "malloc: out of memory");
+ krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
goto fail;
}
a->req_body.sname = malloc(sizeof(*a->req_body.sname));
if (a->req_body.sname == NULL) {
ret = ENOMEM;
- krb5_set_error_string(context, "malloc: out of memory");
+ krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
goto fail;
}
a->req_body.from = malloc(sizeof(*a->req_body.from));
if (a->req_body.from == NULL) {
ret = ENOMEM;
- krb5_set_error_string(context, "malloc: out of memory");
+ krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
goto fail;
}
*a->req_body.from = creds->times.starttime;
a->req_body.rtime = malloc(sizeof(*a->req_body.rtime));
if (a->req_body.rtime == NULL) {
ret = ENOMEM;
- krb5_set_error_string(context, "malloc: out of memory");
+ krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
goto fail;
}
*a->req_body.rtime = creds->times.renew_till;
a->req_body.addresses = malloc(sizeof(*a->req_body.addresses));
if (a->req_body.addresses == NULL) {
ret = ENOMEM;
- krb5_set_error_string(context, "malloc: out of memory");
+ krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
goto fail;
}
return ret;
}
-struct pa_info_data {
- krb5_enctype etype;
- krb5_salt salt;
- krb5_data *s2kparams;
-};
-
-static void
-free_paid(krb5_context context, struct pa_info_data *ppaid)
-{
- krb5_free_salt(context, ppaid->salt);
- if (ppaid->s2kparams)
- krb5_free_data(context, ppaid->s2kparams);
-}
-
static krb5_error_code
set_paid(struct pa_info_data *paid, krb5_context context,
paid->salt.salttype = salttype;
paid->salt.saltvalue.data = malloc(salt_len + 1);
if (paid->salt.saltvalue.data == NULL) {
- krb5_clear_error_string(context);
+ krb5_clear_error_message(context);
return ENOMEM;
}
memcpy(paid->salt.saltvalue.data, salt_string, salt_len);
ret = krb5_copy_data(context, s2kparams, &paid->s2kparams);
if (ret) {
- krb5_clear_error_string(context);
+ krb5_clear_error_message(context);
krb5_free_salt(context, paid->salt);
return ret;
}
static struct pa_info_data *
pa_etype_info2(krb5_context context,
- const krb5_principal client,
+ const krb5_principal client,
const AS_REQ *asreq,
- struct pa_info_data *paid,
+ struct pa_info_data *paid,
heim_octet_string *data)
{
krb5_error_code ret;
if (ret == 0)
ret = set_paid(paid, context, e.val[i].etype,
KRB5_PW_SALT,
- salt.saltvalue.data,
+ salt.saltvalue.data,
salt.saltvalue.length,
e.val[i].s2kparams);
if (e.val[i].salt == NULL)
static struct pa_info_data *
pa_etype_info(krb5_context context,
- const krb5_principal client,
+ const krb5_principal client,
const AS_REQ *asreq,
struct pa_info_data *paid,
heim_octet_string *data)
if (ret == 0) {
ret = set_paid(paid, context, e.val[i].etype,
salt.salttype,
- salt.saltvalue.data,
+ salt.saltvalue.data,
salt.saltvalue.length,
NULL);
if (e.val[i].salt == NULL)
static struct pa_info_data *
pa_pw_or_afs3_salt(krb5_context context,
- const krb5_principal client,
+ const krb5_principal client,
const AS_REQ *asreq,
struct pa_info_data *paid,
heim_octet_string *data)
krb5_error_code ret;
if (paid->etype == ENCTYPE_NULL)
return NULL;
- ret = set_paid(paid, context,
+ ret = set_paid(paid, context,
paid->etype,
paid->salt.salttype,
- data->data,
+ data->data,
data->length,
NULL);
if (ret)
struct pa_info {
krb5_preauthtype type;
struct pa_info_data *(*salt_info)(krb5_context,
- const krb5_principal,
+ const krb5_principal,
const AS_REQ *,
- struct pa_info_data *,
+ struct pa_info_data *,
heim_octet_string *);
};
{ KRB5_PADATA_PW_SALT, pa_pw_or_afs3_salt },
{ KRB5_PADATA_AFS3_SALT, pa_pw_or_afs3_salt }
};
-
+
static PA_DATA *
find_pa_data(const METHOD_DATA *md, int type)
{
}
static struct pa_info_data *
-process_pa_info(krb5_context context,
- const krb5_principal client,
+process_pa_info(krb5_context context,
+ const krb5_principal client,
const AS_REQ *asreq,
struct pa_info_data *paid,
METHOD_DATA *md)
}
static krb5_error_code
-make_pa_enc_timestamp(krb5_context context, METHOD_DATA *md,
+make_pa_enc_timestamp(krb5_context context, METHOD_DATA *md,
krb5_enctype etype, krb5_keyblock *key)
{
PA_ENC_TS_ENC p;
int32_t usec;
int usec2;
krb5_crypto crypto;
-
+
krb5_us_timeofday (context, &p.patimestamp, &usec);
usec2 = usec;
p.pausec = &usec2;
free(buf);
return ret;
}
- ret = krb5_encrypt_EncryptedData(context,
+ ret = krb5_encrypt_EncryptedData(context,
crypto,
KRB5_KU_PA_ENC_TIMESTAMP,
buf,
krb5_crypto_destroy(context, crypto);
if (ret)
return ret;
-
+
ASN1_MALLOC_ENCODE(EncryptedData, buf, buf_size, &encdata, &len, ret);
free_EncryptedData(&encdata);
if (ret)
static krb5_error_code
add_enc_ts_padata(krb5_context context,
- METHOD_DATA *md,
+ METHOD_DATA *md,
krb5_principal client,
- krb5_s2k_proc key_proc,
+ krb5_s2k_proc keyproc,
krb5_const_pointer keyseed,
krb5_enctype *enctypes,
unsigned netypes,
krb5_salt salt2;
krb5_enctype *ep;
int i;
-
+
if(salt == NULL) {
/* default to standard salt */
ret = krb5_get_pw_salt (context, client, &salt2);
+ if (ret)
+ return ret;
salt = &salt2;
}
if (!enctypes) {
for (i = 0; i < netypes; ++i) {
krb5_keyblock *key;
- ret = (*key_proc)(context, enctypes[i], keyseed,
- *salt, s2kparams, &key);
+ _krb5_debug(context, 5, "krb5_get_init_creds: using ENC-TS with enctype %d", enctypes[i]);
+
+ ret = (*keyproc)(context, enctypes[i], keyseed,
+ *salt, s2kparams, &key);
if (ret)
continue;
ret = make_pa_enc_timestamp (context, md, enctypes[i], key);
struct pa_info_data *ppaid,
METHOD_DATA *md)
{
- if (ctx->key_proc == NULL || ctx->password == NULL)
+ if (ctx->keyproc == NULL || ctx->keyseed == NULL)
return 0;
if (ppaid) {
- add_enc_ts_padata(context, md, client,
- ctx->key_proc, ctx->password,
+ add_enc_ts_padata(context, md, client,
+ ctx->keyproc, ctx->keyseed,
&ppaid->etype, 1,
&ppaid->salt, ppaid->s2kparams);
} else {
krb5_salt salt;
-
+
+ _krb5_debug(context, 5, "krb5_get_init_creds: pa-info not found, guessing salt");
+
/* make a v5 salted pa-data */
- add_enc_ts_padata(context, md, client,
- ctx->key_proc, ctx->password,
- a->req_body.etype.val, a->req_body.etype.len,
+ add_enc_ts_padata(context, md, client,
+ ctx->keyproc, ctx->keyseed,
+ a->req_body.etype.val, a->req_body.etype.len,
NULL, NULL);
-
+
/* make a v4 salted pa-data */
salt.salttype = KRB5_PW_SALT;
krb5_data_zero(&salt.saltvalue);
- add_enc_ts_padata(context, md, client,
- ctx->key_proc, ctx->password,
- a->req_body.etype.val, a->req_body.etype.len,
+ add_enc_ts_padata(context, md, client,
+ ctx->keyproc, ctx->keyseed,
+ a->req_body.etype.val, a->req_body.etype.len,
&salt, NULL);
}
return 0;
{
krb5_error_code ret;
- ret = (*ctx->key_proc)(context, etype, ctx->password,
+ ret = (*ctx->keyproc)(context, etype, ctx->keyseed,
salt, s2kparams, key);
return ret;
}
pa_data_to_md_pkinit(krb5_context context,
const AS_REQ *a,
const krb5_principal client,
+ int win2k,
krb5_get_init_creds_ctx *ctx,
METHOD_DATA *md)
{
return 0;
#ifdef PKINIT
return _krb5_pk_mk_padata(context,
- ctx->pk_init_ctx,
- &a->req_body,
- ctx->pk_nonce,
- md);
+ ctx->pk_init_ctx,
+ ctx->ic_flags,
+ win2k,
+ &a->req_body,
+ ctx->pk_nonce,
+ md);
#else
- krb5_set_error_string(context, "no support for PKINIT compiled in");
+ krb5_set_error_message(context, EINVAL,
+ N_("no support for PKINIT compiled in", ""));
return EINVAL;
#endif
}
krb5_error_code ret;
PA_PAC_REQUEST req;
void *buf;
-
+
switch (ctx->req_pac) {
case KRB5_INIT_CREDS_TRISTATE_UNSET:
return 0; /* don't bother */
break;
case KRB5_INIT_CREDS_TRISTATE_FALSE:
req.include_pac = 0;
- }
+ }
- ASN1_MALLOC_ENCODE(PA_PAC_REQUEST, buf, length,
+ ASN1_MALLOC_ENCODE(PA_PAC_REQUEST, buf, length,
&req, &len, ret);
if (ret)
return ret;
ALLOC(*out_md, 1);
if (*out_md == NULL) {
- krb5_set_error_string(context, "malloc: out of memory");
+ krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", ""));
return ENOMEM;
}
(*out_md)->len = 0;
(*out_md)->val = NULL;
-
+
+ if (_krb5_have_debug(context, 5)) {
+ unsigned i;
+ _krb5_debug(context, 5, "KDC send %d patypes", in_md->len);
+ for (i = 0; i < in_md->len; i++)
+ _krb5_debug(context, 5, "KDC send PA-DATA type: %d", in_md->val[i].padata_type);
+ }
+
/*
* Make sure we don't sent both ENC-TS and PK-INIT pa data, no
* need to expose our password protecting our PKCS12 key.
if (ctx->pk_init_ctx) {
- ret = pa_data_to_md_pkinit(context, a, creds->client, ctx, *out_md);
+ _krb5_debug(context, 5, "krb5_get_init_creds: "
+ "prepareing PKINIT padata (%s)",
+ (ctx->used_pa_types & USED_PKINIT_W2K) ? "win2k" : "ietf");
+
+ if (ctx->used_pa_types & USED_PKINIT_W2K) {
+ krb5_set_error_message(context, KRB5_GET_IN_TKT_LOOP,
+ "Already tried pkinit, looping");
+ return KRB5_GET_IN_TKT_LOOP;
+ }
+
+ ret = pa_data_to_md_pkinit(context, a, creds->client,
+ (ctx->used_pa_types & USED_PKINIT),
+ ctx, *out_md);
if (ret)
return ret;
+ if (ctx->used_pa_types & USED_PKINIT)
+ ctx->used_pa_types |= USED_PKINIT_W2K;
+ else
+ ctx->used_pa_types |= USED_PKINIT;
+
} else if (in_md->len != 0) {
- struct pa_info_data paid, *ppaid;
-
- memset(&paid, 0, sizeof(paid));
-
- paid.etype = ENCTYPE_NULL;
- ppaid = process_pa_info(context, creds->client, a, &paid, in_md);
-
+ struct pa_info_data *paid, *ppaid;
+ unsigned flag;
+
+ paid = calloc(1, sizeof(*paid));
+
+ paid->etype = ENCTYPE_NULL;
+ ppaid = process_pa_info(context, creds->client, a, paid, in_md);
+
+ if (ppaid)
+ flag = USED_ENC_TS_INFO;
+ else
+ flag = USED_ENC_TS_GUESS;
+
+ if (ctx->used_pa_types & flag) {
+ if (ppaid)
+ free_paid(context, ppaid);
+ krb5_set_error_message(context, KRB5_GET_IN_TKT_LOOP,
+ "Already tried ENC-TS-%s, looping",
+ flag == USED_ENC_TS_INFO ? "info" : "guess");
+ return KRB5_GET_IN_TKT_LOOP;
+ }
+
pa_data_to_md_ts_enc(context, a, creds->client, ctx, ppaid, *out_md);
- if (ppaid)
- free_paid(context, ppaid);
+
+ ctx->used_pa_types |= flag;
+
+ if (ppaid) {
+ if (ctx->ppaid) {
+ free_paid(context, ctx->ppaid);
+ free(ctx->ppaid);
+ }
+ ctx->ppaid = ppaid;
+ } else
+ free(paid);
}
pa_data_add_pac_request(context, ctx, *out_md);
krb5_get_init_creds_ctx *ctx,
krb5_creds *creds,
AS_REQ *a,
- krb5_kdc_rep *rep,
+ AS_REP *rep,
const krb5_krbhst_info *hi,
krb5_keyblock **key)
{
memset(&paid, 0, sizeof(paid));
- etype = rep->kdc_rep.enc_part.etype;
+ etype = rep->enc_part.etype;
- if (rep->kdc_rep.padata) {
+ if (rep->padata) {
paid.etype = etype;
- ppaid = process_pa_info(context, creds->client, a, &paid,
- rep->kdc_rep.padata);
+ ppaid = process_pa_info(context, creds->client, a, &paid,
+ rep->padata);
}
+ if (ppaid == NULL)
+ ppaid = ctx->ppaid;
if (ppaid == NULL) {
ret = krb5_get_pw_salt (context, creds->client, &paid.salt);
if (ret)
return ret;
paid.etype = etype;
paid.s2kparams = NULL;
+ ppaid = &paid;
}
pa = NULL;
- if (rep->kdc_rep.padata) {
+ if (rep->padata) {
int idx = 0;
- pa = krb5_find_padata(rep->kdc_rep.padata->val,
- rep->kdc_rep.padata->len,
+ pa = krb5_find_padata(rep->padata->val,
+ rep->padata->len,
KRB5_PADATA_PK_AS_REP,
&idx);
if (pa == NULL) {
idx = 0;
- pa = krb5_find_padata(rep->kdc_rep.padata->val,
- rep->kdc_rep.padata->len,
+ pa = krb5_find_padata(rep->padata->val,
+ rep->padata->len,
KRB5_PADATA_PK_AS_REP_19,
&idx);
}
}
if (pa && ctx->pk_init_ctx) {
#ifdef PKINIT
+ _krb5_debug(context, 5, "krb5_get_init_creds: using PKINIT");
+
ret = _krb5_pk_rd_pa_reply(context,
a->req_body.realm,
ctx->pk_init_ctx,
pa,
key);
#else
- krb5_set_error_string(context, "no support for PKINIT compiled in");
ret = EINVAL;
+ krb5_set_error_message(context, ret, N_("no support for PKINIT compiled in", ""));
#endif
- } else if (ctx->password)
- ret = pa_data_to_key_plain(context, creds->client, ctx,
- paid.salt, paid.s2kparams, etype, key);
- else {
- krb5_set_error_string(context, "No usable pa data type");
+ } else if (ctx->keyseed) {
+ _krb5_debug(context, 5, "krb5_get_init_creds: using keyproc");
+ ret = pa_data_to_key_plain(context, creds->client, ctx,
+ ppaid->salt, ppaid->s2kparams, etype, key);
+ } else {
ret = EINVAL;
+ krb5_set_error_message(context, ret, N_("No usable pa data type", ""));
}
free_paid(context, &paid);
return ret;
}
-static krb5_error_code
-init_cred_loop(krb5_context context,
- krb5_get_init_creds_opt *init_cred_opts,
- const krb5_prompter_fct prompter,
- void *prompter_data,
- krb5_get_init_creds_ctx *ctx,
- krb5_creds *creds,
- krb5_kdc_rep *ret_as_reply)
+/**
+ * Start a new context to get a new initial credential.
+ *
+ * @param context A Kerberos 5 context.
+ * @param client The Kerberos principal to get the credential for, if
+ * NULL is given, the default principal is used as determined by
+ * krb5_get_default_principal().
+ * @param prompter
+ * @param prompter_data
+ * @param start_time the time the ticket should start to be valid or 0 for now.
+ * @param options a options structure, can be NULL for default options.
+ * @param rctx A new allocated free with krb5_init_creds_free().
+ *
+ * @return 0 for success or an Kerberos 5 error code, see krb5_get_error_message().
+ *
+ * @ingroup krb5_credential
+ */
+
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_init_creds_init(krb5_context context,
+ krb5_principal client,
+ krb5_prompter_fct prompter,
+ void *prompter_data,
+ krb5_deltat start_time,
+ krb5_get_init_creds_opt *options,
+ krb5_init_creds_context *rctx)
{
+ krb5_init_creds_context ctx;
krb5_error_code ret;
- krb5_kdc_rep rep;
- METHOD_DATA md;
- krb5_data resp;
- size_t len;
- size_t size;
- krb5_krbhst_info *hi = NULL;
- krb5_sendto_ctx stctx = NULL;
-
-
- memset(&md, 0, sizeof(md));
- memset(&rep, 0, sizeof(rep));
- _krb5_get_init_creds_opt_free_krb5_error(init_cred_opts);
+ *rctx = NULL;
- if (ret_as_reply)
- memset(ret_as_reply, 0, sizeof(*ret_as_reply));
+ ctx = calloc(1, sizeof(*ctx));
+ if (ctx == NULL) {
+ krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", ""));
+ return ENOMEM;
+ }
- ret = init_creds_init_as_req(context, ctx->flags, creds,
- ctx->addrs, ctx->etypes, &ctx->as_req);
- if (ret)
+ ret = get_init_creds_common(context, client, start_time, options, ctx);
+ if (ret) {
+ free(ctx);
return ret;
-
- ret = krb5_sendto_ctx_alloc(context, &stctx);
- if (ret)
- goto out;
- krb5_sendto_ctx_set_func(stctx, _krb5_kdc_retry, NULL);
+ }
/* Set a new nonce. */
krb5_generate_random_block (&ctx->nonce, sizeof(ctx->nonce));
- ctx->nonce &= 0xffffffff;
+ ctx->nonce &= 0x7fffffff;
/* XXX these just needs to be the same when using Windows PK-INIT */
ctx->pk_nonce = ctx->nonce;
- /*
- * Increase counter when we want other pre-auth types then
- * KRB5_PA_ENC_TIMESTAMP.
- */
-#define MAX_PA_COUNTER 3
-
- ctx->pa_counter = 0;
- while (ctx->pa_counter < MAX_PA_COUNTER) {
+ ctx->prompter = prompter;
+ ctx->prompter_data = prompter_data;
- ctx->pa_counter++;
+ *rctx = ctx;
- if (ctx->as_req.padata) {
- free_METHOD_DATA(ctx->as_req.padata);
- free(ctx->as_req.padata);
- ctx->as_req.padata = NULL;
- }
+ return ret;
+}
- /* Set a new nonce. */
- ctx->as_req.req_body.nonce = ctx->nonce;
+/**
+ * Sets the service that the is requested. This call is only neede for
+ * special initial tickets, by default the a krbtgt is fetched in the default realm.
+ *
+ * @param context a Kerberos 5 context.
+ * @param ctx a krb5_init_creds_context context.
+ * @param service the service given as a string, for example
+ * "kadmind/admin". If NULL, the default krbtgt in the clients
+ * realm is set.
+ *
+ * @return 0 for success, or an Kerberos 5 error code, see krb5_get_error_message().
+ * @ingroup krb5_credential
+ */
- /* fill_in_md_data */
- ret = process_pa_data_to_md(context, creds, &ctx->as_req, ctx,
- &md, &ctx->as_req.padata,
- prompter, prompter_data);
- if (ret)
- goto out;
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_init_creds_set_service(krb5_context context,
+ krb5_init_creds_context ctx,
+ const char *service)
+{
+ krb5_const_realm client_realm;
+ krb5_principal principal;
+ krb5_error_code ret;
- krb5_data_free(&ctx->req_buffer);
+ client_realm = krb5_principal_get_realm (context, ctx->cred.client);
- ASN1_MALLOC_ENCODE(AS_REQ,
- ctx->req_buffer.data, ctx->req_buffer.length,
- &ctx->as_req, &len, ret);
+ if (service) {
+ ret = krb5_parse_name (context, service, &principal);
if (ret)
- goto out;
- if(len != ctx->req_buffer.length)
- krb5_abortx(context, "internal error in ASN.1 encoder");
+ return ret;
+ krb5_principal_set_realm (context, principal, client_realm);
+ } else {
+ ret = krb5_make_principal(context, &principal,
+ client_realm, KRB5_TGS_NAME, client_realm,
+ NULL);
+ if (ret)
+ return ret;
+ }
+ krb5_free_principal(context, ctx->cred.server);
+ ctx->cred.server = principal;
- ret = krb5_sendto_context (context, stctx, &ctx->req_buffer,
- creds->client->realm, &resp);
- if (ret)
- goto out;
+ return 0;
+}
- memset (&rep, 0, sizeof(rep));
- ret = decode_AS_REP(resp.data, resp.length, &rep.kdc_rep, &size);
- if (ret == 0) {
- krb5_data_free(&resp);
- krb5_clear_error_string(context);
- break;
- } else {
- /* let's try to parse it as a KRB-ERROR */
- KRB_ERROR error;
+/**
+ * Sets the password that will use for the request.
+ *
+ * @param context a Kerberos 5 context.
+ * @param ctx ctx krb5_init_creds_context context.
+ * @param password the password to use.
+ *
+ * @return 0 for success, or an Kerberos 5 error code, see krb5_get_error_message().
+ * @ingroup krb5_credential
+ */
- ret = krb5_rd_error(context, &resp, &error);
- if(ret && resp.data && ((char*)resp.data)[0] == 4)
- ret = KRB5KRB_AP_ERR_V4_REPLY;
- krb5_data_free(&resp);
- if (ret)
- goto out;
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_init_creds_set_password(krb5_context context,
+ krb5_init_creds_context ctx,
+ const char *password)
+{
+ if (ctx->password) {
+ memset(ctx->password, 0, strlen(ctx->password));
+ free(ctx->password);
+ }
+ if (password) {
+ ctx->password = strdup(password);
+ if (ctx->password == NULL) {
+ krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", ""));
+ return ENOMEM;
+ }
+ ctx->keyseed = (void *) ctx->password;
+ } else {
+ ctx->keyseed = NULL;
+ ctx->password = NULL;
+ }
- ret = krb5_error_from_rd_error(context, &error, creds);
+ return 0;
+}
- /*
- * If no preauth was set and KDC requires it, give it one
- * more try.
- */
+static krb5_error_code KRB5_CALLCONV
+keytab_key_proc(krb5_context context, krb5_enctype enctype,
+ krb5_const_pointer keyseed,
+ krb5_salt salt, krb5_data *s2kparms,
+ krb5_keyblock **key)
+{
+ krb5_keytab_key_proc_args *args = rk_UNCONST(keyseed);
+ krb5_keytab keytab = args->keytab;
+ krb5_principal principal = args->principal;
+ krb5_error_code ret;
+ krb5_keytab real_keytab;
+ krb5_keytab_entry entry;
+
+ if(keytab == NULL)
+ krb5_kt_default(context, &real_keytab);
+ else
+ real_keytab = keytab;
+
+ ret = krb5_kt_get_entry (context, real_keytab, principal,
+ 0, enctype, &entry);
+
+ if (keytab == NULL)
+ krb5_kt_close (context, real_keytab);
+
+ if (ret)
+ return ret;
+
+ ret = krb5_copy_keyblock (context, &entry.keyblock, key);
+ krb5_kt_free_entry(context, &entry);
+ return ret;
+}
+
+
+/**
+ * Set the keytab to use for authentication.
+ *
+ * @param context a Kerberos 5 context.
+ * @param ctx ctx krb5_init_creds_context context.
+ * @param keytab the keytab to read the key from.
+ *
+ * @return 0 for success, or an Kerberos 5 error code, see krb5_get_error_message().
+ * @ingroup krb5_credential
+ */
+
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_init_creds_set_keytab(krb5_context context,
+ krb5_init_creds_context ctx,
+ krb5_keytab keytab)
+{
+ krb5_keytab_key_proc_args *a;
+ krb5_keytab_entry entry;
+ krb5_kt_cursor cursor;
+ krb5_enctype *etypes = NULL;
+ krb5_error_code ret;
+ size_t netypes = 0;
+ int kvno = 0;
+
+ a = malloc(sizeof(*a));
+ if (a == NULL) {
+ krb5_set_error_message(context, ENOMEM,
+ N_("malloc: out of memory", ""));
+ return ENOMEM;
+ }
+
+ a->principal = ctx->cred.client;
+ a->keytab = keytab;
+
+ ctx->keytab_data = a;
+ ctx->keyseed = (void *)a;
+ ctx->keyproc = keytab_key_proc;
+
+ /*
+ * We need to the KDC what enctypes we support for this keytab,
+ * esp if the keytab is really a password based entry, then the
+ * KDC might have more enctypes in the database then what we have
+ * in the keytab.
+ */
+
+ ret = krb5_kt_start_seq_get(context, keytab, &cursor);
+ if(ret)
+ goto out;
+
+ while(krb5_kt_next_entry(context, keytab, &entry, &cursor) == 0){
+ void *ptr;
+
+ if (!krb5_principal_compare(context, entry.principal, ctx->cred.client))
+ goto next;
+
+ /* check if we ahve this kvno already */
+ if (entry.vno > kvno) {
+ /* remove old list of etype */
+ if (etypes)
+ free(etypes);
+ etypes = NULL;
+ netypes = 0;
+ kvno = entry.vno;
+ } else if (entry.vno != kvno)
+ goto next;
+
+ /* check if enctype is supported */
+ if (krb5_enctype_valid(context, entry.keyblock.keytype) != 0)
+ goto next;
+
+ /* add enctype to supported list */
+ ptr = realloc(etypes, sizeof(etypes[0]) * (netypes + 2));
+ if (ptr == NULL)
+ goto next;
+
+ etypes = ptr;
+ etypes[netypes] = entry.keyblock.keytype;
+ etypes[netypes + 1] = ETYPE_NULL;
+ netypes++;
+ next:
+ krb5_kt_free_entry(context, &entry);
+ }
+ krb5_kt_end_seq_get(context, keytab, &cursor);
+
+ if (etypes) {
+ if (ctx->etypes)
+ free(ctx->etypes);
+ ctx->etypes = etypes;
+ }
+
+ out:
+ return 0;
+}
+
+static krb5_error_code KRB5_CALLCONV
+keyblock_key_proc(krb5_context context, krb5_enctype enctype,
+ krb5_const_pointer keyseed,
+ krb5_salt salt, krb5_data *s2kparms,
+ krb5_keyblock **key)
+{
+ return krb5_copy_keyblock (context, keyseed, key);
+}
+
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_init_creds_set_keyblock(krb5_context context,
+ krb5_init_creds_context ctx,
+ krb5_keyblock *keyblock)
+{
+ ctx->keyseed = (void *)keyblock;
+ ctx->keyproc = keyblock_key_proc;
+
+ return 0;
+}
+
+/**
+ * The core loop if krb5_get_init_creds() function family. Create the
+ * packets and have the caller send them off to the KDC.
+ *
+ * If the caller want all work been done for them, use
+ * krb5_init_creds_get() instead.
+ *
+ * @param context a Kerberos 5 context.
+ * @param ctx ctx krb5_init_creds_context context.
+ * @param in input data from KDC, first round it should be reset by krb5_data_zer().
+ * @param out reply to KDC.
+ * @param hostinfo KDC address info, first round it can be NULL.
+ * @param flags status of the round, if
+ * KRB5_INIT_CREDS_STEP_FLAG_CONTINUE is set, continue one more round.
+ *
+ * @return 0 for success, or an Kerberos 5 error code, see
+ * krb5_get_error_message().
+ *
+ * @ingroup krb5_credential
+ */
+
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_init_creds_step(krb5_context context,
+ krb5_init_creds_context ctx,
+ krb5_data *in,
+ krb5_data *out,
+ krb5_krbhst_info *hostinfo,
+ unsigned int *flags)
+{
+ krb5_error_code ret;
+ size_t len;
+ size_t size;
+
+ krb5_data_zero(out);
+
+ if (ctx->as_req.req_body.cname == NULL) {
+ ret = init_as_req(context, ctx->flags, &ctx->cred,
+ ctx->addrs, ctx->etypes, &ctx->as_req);
+ if (ret) {
+ free_init_creds_ctx(context, ctx);
+ return ret;
+ }
+ }
+
+#define MAX_PA_COUNTER 10
+ if (ctx->pa_counter > MAX_PA_COUNTER) {
+ krb5_set_error_message(context, KRB5_GET_IN_TKT_LOOP,
+ N_("Looping %d times while getting "
+ "initial credentials", ""),
+ ctx->pa_counter);
+ return KRB5_GET_IN_TKT_LOOP;
+ }
+ ctx->pa_counter++;
+
+ _krb5_debug(context, 5, "krb5_get_init_creds: loop %d", ctx->pa_counter);
+
+ /* Lets process the input packet */
+ if (in && in->length) {
+ krb5_kdc_rep rep;
+
+ memset(&rep, 0, sizeof(rep));
+
+ _krb5_debug(context, 5, "krb5_get_init_creds: processing input");
+
+ ret = decode_AS_REP(in->data, in->length, &rep.kdc_rep, &size);
+ if (ret == 0) {
+ krb5_keyblock *key = NULL;
+ unsigned eflags = EXTRACT_TICKET_AS_REQ | EXTRACT_TICKET_TIMESYNC;
+
+ if (ctx->flags.canonicalize) {
+ eflags |= EXTRACT_TICKET_ALLOW_SERVER_MISMATCH;
+ eflags |= EXTRACT_TICKET_MATCH_REALM;
+ }
+ if (ctx->ic_flags & KRB5_INIT_CREDS_NO_C_CANON_CHECK)
+ eflags |= EXTRACT_TICKET_ALLOW_CNAME_MISMATCH;
+
+ ret = process_pa_data_to_key(context, ctx, &ctx->cred,
+ &ctx->as_req, &rep.kdc_rep, hostinfo, &key);
+ if (ret) {
+ free_AS_REP(&rep.kdc_rep);
+ goto out;
+ }
+
+ _krb5_debug(context, 5, "krb5_get_init_creds: extracting ticket");
+
+ ret = _krb5_extract_ticket(context,
+ &rep,
+ &ctx->cred,
+ key,
+ NULL,
+ KRB5_KU_AS_REP_ENC_PART,
+ NULL,
+ ctx->nonce,
+ eflags,
+ NULL,
+ NULL);
+ krb5_free_keyblock(context, key);
+
+ *flags = 0;
+
+ if (ret == 0)
+ ret = copy_EncKDCRepPart(&rep.enc_part, &ctx->enc_part);
+
+ free_AS_REP(&rep.kdc_rep);
+ free_EncASRepPart(&rep.enc_part);
+
+ return ret;
+
+ } else {
+ /* let's try to parse it as a KRB-ERROR */
+
+ _krb5_debug(context, 5, "krb5_get_init_creds: got an error");
+
+ free_KRB_ERROR(&ctx->error);
+
+ ret = krb5_rd_error(context, in, &ctx->error);
+ if(ret && in->length && ((char*)in->data)[0] == 4)
+ ret = KRB5KRB_AP_ERR_V4_REPLY;
+ if (ret) {
+ _krb5_debug(context, 5, "krb5_get_init_creds: failed to read error");
+ goto out;
+ }
+
+ ret = krb5_error_from_rd_error(context, &ctx->error, &ctx->cred);
+
+ _krb5_debug(context, 5, "krb5_get_init_creds: KRB-ERROR %d", ret);
+
+ /*
+ * If no preauth was set and KDC requires it, give it one
+ * more try.
+ */
if (ret == KRB5KDC_ERR_PREAUTH_REQUIRED) {
- free_METHOD_DATA(&md);
- memset(&md, 0, sizeof(md));
- if (error.e_data) {
- ret = decode_METHOD_DATA(error.e_data->data,
- error.e_data->length,
- &md,
+ free_METHOD_DATA(&ctx->md);
+ memset(&ctx->md, 0, sizeof(ctx->md));
+
+ if (ctx->error.e_data) {
+ ret = decode_METHOD_DATA(ctx->error.e_data->data,
+ ctx->error.e_data->length,
+ &ctx->md,
NULL);
if (ret)
- krb5_set_error_string(context,
- "failed to decode METHOD DATA");
+ krb5_set_error_message(context, ret,
+ N_("Failed to decode METHOD-DATA", ""));
} else {
- /* XXX guess what the server want here add add md */
+ krb5_set_error_message(context, ret,
+ N_("Preauth required but no preauth "
+ "options send by KDC", ""));
}
- krb5_free_error_contents(context, &error);
- if (ret)
+ } else if (ret == KRB5KRB_AP_ERR_SKEW && context->kdc_sec_offset == 0) {
+ /*
+ * Try adapt to timeskrew when we are using pre-auth, and
+ * if there was a time skew, try again.
+ */
+ krb5_set_real_time(context, ctx->error.stime, -1);
+ if (context->kdc_sec_offset)
+ ret = 0;
+
+ _krb5_debug(context, 10, "init_creds: err skew updateing kdc offset to %d",
+ context->kdc_sec_offset);
+
+ ctx->used_pa_types = 0;
+
+ } else if (ret == KRB5_KDC_ERR_WRONG_REALM && ctx->flags.canonicalize) {
+ /* client referal to a new realm */
+
+ if (ctx->error.crealm == NULL) {
+ krb5_set_error_message(context, ret,
+ N_("Got a client referral, not but no realm", ""));
goto out;
- } else {
- _krb5_get_init_creds_opt_set_krb5_error(context,
- init_cred_opts,
- &error);
- if (ret_as_reply)
- rep.error = error;
- else
- krb5_free_error_contents(context, &error);
- goto out;
+ }
+ _krb5_debug(context, 5,
+ "krb5_get_init_creds: got referal to realm %s",
+ *ctx->error.crealm);
+
+ ret = krb5_principal_set_realm(context,
+ ctx->cred.client,
+ *ctx->error.crealm);
+
+ ctx->used_pa_types = 0;
}
+ if (ret)
+ goto out;
}
}
- {
- krb5_keyblock *key = NULL;
- unsigned flags = 0;
-
- if (ctx->flags.request_anonymous)
- flags |= EXTRACT_TICKET_ALLOW_SERVER_MISMATCH;
- if (ctx->flags.canonicalize) {
- flags |= EXTRACT_TICKET_ALLOW_CNAME_MISMATCH;
- flags |= EXTRACT_TICKET_ALLOW_SERVER_MISMATCH;
- flags |= EXTRACT_TICKET_MATCH_REALM;
- }
-
- ret = process_pa_data_to_key(context, ctx, creds,
- &ctx->as_req, &rep, hi, &key);
- if (ret)
- goto out;
-
- ret = _krb5_extract_ticket(context,
- &rep,
- creds,
- key,
- NULL,
- KRB5_KU_AS_REP_ENC_PART,
- NULL,
- ctx->nonce,
- flags,
- NULL,
- NULL);
- krb5_free_keyblock(context, key);
+ if (ctx->as_req.padata) {
+ free_METHOD_DATA(ctx->as_req.padata);
+ free(ctx->as_req.padata);
+ ctx->as_req.padata = NULL;
}
- /*
- * Verify referral data
- */
- if ((ctx->ic_flags & KRB5_INIT_CREDS_CANONICALIZE) &&
- (ctx->ic_flags & KRB5_INIT_CREDS_NO_C_CANON_CHECK) == 0)
- {
- PA_ClientCanonicalized canon;
- krb5_crypto crypto;
- krb5_data data;
- PA_DATA *pa;
- size_t len;
-
- pa = find_pa_data(rep.kdc_rep.padata, KRB5_PADATA_CLIENT_CANONICALIZED);
- if (pa == NULL) {
- ret = EINVAL;
- krb5_set_error_string(context, "Client canonicalizion not signed");
- goto out;
- }
-
- ret = decode_PA_ClientCanonicalized(pa->padata_value.data,
- pa->padata_value.length,
- &canon, &len);
- if (ret) {
- krb5_set_error_string(context, "Failed to decode "
- "PA_ClientCanonicalized");
- goto out;
- }
- ASN1_MALLOC_ENCODE(PA_ClientCanonicalizedNames, data.data, data.length,
- &canon.names, &len, ret);
- if (ret)
- goto out;
- if (data.length != len)
- krb5_abortx(context, "internal asn.1 error");
+ /* Set a new nonce. */
+ ctx->as_req.req_body.nonce = ctx->nonce;
- ret = krb5_crypto_init(context, &creds->session, 0, &crypto);
- if (ret) {
- free(data.data);
- free_PA_ClientCanonicalized(&canon);
- goto out;
- }
+ /* fill_in_md_data */
+ ret = process_pa_data_to_md(context, &ctx->cred, &ctx->as_req, ctx,
+ &ctx->md, &ctx->as_req.padata,
+ ctx->prompter, ctx->prompter_data);
+ if (ret)
+ goto out;
- ret = krb5_verify_checksum(context, crypto, KRB5_KU_CANONICALIZED_NAMES,
- data.data, data.length,
- &canon.canon_checksum);
- krb5_crypto_destroy(context, crypto);
- free(data.data);
- free_PA_ClientCanonicalized(&canon);
- if (ret) {
- krb5_set_error_string(context, "Failed to verify "
- "client canonicalized data");
- goto out;
- }
- }
-out:
- if (stctx)
- krb5_sendto_ctx_free(context, stctx);
krb5_data_free(&ctx->req_buffer);
- free_METHOD_DATA(&md);
- memset(&md, 0, sizeof(md));
- if (ret == 0 && ret_as_reply)
- *ret_as_reply = rep;
- else
- krb5_free_kdc_rep (context, &rep);
+ ASN1_MALLOC_ENCODE(AS_REQ,
+ ctx->req_buffer.data, ctx->req_buffer.length,
+ &ctx->as_req, &len, ret);
+ if (ret)
+ goto out;
+ if(len != ctx->req_buffer.length)
+ krb5_abortx(context, "internal error in ASN.1 encoder");
+
+ out->data = ctx->req_buffer.data;
+ out->length = ctx->req_buffer.length;
+
+ *flags = KRB5_INIT_CREDS_STEP_FLAG_CONTINUE;
+
+ return 0;
+ out:
return ret;
}
-krb5_error_code KRB5_LIB_FUNCTION
-krb5_get_init_creds(krb5_context context,
- krb5_creds *creds,
- krb5_principal client,
- krb5_prompter_fct prompter,
- void *data,
- krb5_deltat start_time,
- const char *in_tkt_service,
- krb5_get_init_creds_opt *options)
+/**
+ * Extract the newly acquired credentials from krb5_init_creds_context
+ * context.
+ *
+ * @param context A Kerberos 5 context.
+ * @param ctx
+ * @param cred credentials, free with krb5_free_cred_contents().
+ *
+ * @return 0 for sucess or An Kerberos error code, see krb5_get_error_message().
+ */
+
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_init_creds_get_creds(krb5_context context,
+ krb5_init_creds_context ctx,
+ krb5_creds *cred)
{
- krb5_get_init_creds_ctx ctx;
- krb5_kdc_rep kdc_reply;
- krb5_error_code ret;
- char buf[BUFSIZ];
- int done;
+ return krb5_copy_creds_contents(context, &ctx->cred, cred);
+}
- memset(&kdc_reply, 0, sizeof(kdc_reply));
+/**
+ * Get the last error from the transaction.
+ *
+ * @return Returns 0 or an error code
+ *
+ * @ingroup krb5_credential
+ */
- ret = get_init_creds_common(context, client, start_time,
- in_tkt_service, options, &ctx);
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_init_creds_get_error(krb5_context context,
+ krb5_init_creds_context ctx,
+ KRB_ERROR *error)
+{
+ krb5_error_code ret;
+
+ ret = copy_KRB_ERROR(&ctx->error, error);
if (ret)
- goto out;
+ krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
- done = 0;
- while(!done) {
- memset(&kdc_reply, 0, sizeof(kdc_reply));
-
- ret = init_cred_loop(context,
- options,
- prompter,
- data,
- &ctx,
- &ctx.cred,
- &kdc_reply);
-
- switch (ret) {
- case 0 :
- done = 1;
- break;
- case KRB5KDC_ERR_KEY_EXPIRED :
- /* try to avoid recursion */
+ return ret;
+}
- /* don't try to change password where then where none */
- if (prompter == NULL || ctx.password == NULL)
- goto out;
+/**
+ * Free the krb5_init_creds_context allocated by krb5_init_creds_init().
+ *
+ * @param context A Kerberos 5 context.
+ * @param ctx The krb5_init_creds_context to free.
+ *
+ * @ingroup krb5_credential
+ */
- krb5_clear_error_string (context);
+KRB5_LIB_FUNCTION void KRB5_LIB_CALL
+krb5_init_creds_free(krb5_context context,
+ krb5_init_creds_context ctx)
+{
+ free_init_creds_ctx(context, ctx);
+ free(ctx);
+}
- if (ctx.in_tkt_service != NULL
- && strcmp (ctx.in_tkt_service, "kadmin/changepw") == 0)
- goto out;
+/**
+ * Get new credentials as setup by the krb5_init_creds_context.
+ *
+ * @param context A Kerberos 5 context.
+ * @param ctx The krb5_init_creds_context to process.
+ *
+ * @ingroup krb5_credential
+ */
- ret = change_password (context,
- client,
- ctx.password,
- buf,
- sizeof(buf),
- prompter,
- data,
- options);
- if (ret)
- goto out;
- ctx.password = buf;
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_init_creds_get(krb5_context context, krb5_init_creds_context ctx)
+{
+ krb5_sendto_ctx stctx = NULL;
+ krb5_krbhst_info *hostinfo = NULL;
+ krb5_error_code ret;
+ krb5_data in, out;
+ unsigned int flags = 0;
+
+ krb5_data_zero(&in);
+ krb5_data_zero(&out);
+
+ ret = krb5_sendto_ctx_alloc(context, &stctx);
+ if (ret)
+ goto out;
+ krb5_sendto_ctx_set_func(stctx, _krb5_kdc_retry, NULL);
+
+ while (1) {
+ flags = 0;
+ ret = krb5_init_creds_step(context, ctx, &in, &out, hostinfo, &flags);
+ krb5_data_free(&in);
+ if (ret)
+ goto out;
+
+ if ((flags & 1) == 0)
break;
- default:
+
+ ret = krb5_sendto_context (context, stctx, &out,
+ ctx->cred.client->realm, &in);
+ if (ret)
goto out;
- }
- }
- if (prompter)
- print_expire (context,
- krb5_principal_get_realm (context, ctx.cred.client),
- &kdc_reply,
- prompter,
- data);
+ }
out:
- memset (buf, 0, sizeof(buf));
- free_init_creds_ctx(context, &ctx);
- krb5_free_kdc_rep (context, &kdc_reply);
- if (ret == 0)
- *creds = ctx.cred;
- else
- krb5_free_cred_contents (context, &ctx.cred);
+ if (stctx)
+ krb5_sendto_ctx_free(context, stctx);
return ret;
}
-krb5_error_code KRB5_LIB_FUNCTION
+/**
+ * Get new credentials using password.
+ *
+ * @ingroup krb5_credential
+ */
+
+
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_get_init_creds_password(krb5_context context,
krb5_creds *creds,
krb5_principal client,
void *data,
krb5_deltat start_time,
const char *in_tkt_service,
- krb5_get_init_creds_opt *in_options)
+ krb5_get_init_creds_opt *options)
{
- krb5_get_init_creds_opt *options;
+ krb5_init_creds_context ctx;
char buf[BUFSIZ];
krb5_error_code ret;
+ int chpw = 0;
- if (in_options == NULL)
- ret = krb5_get_init_creds_opt_alloc(context, &options);
- else
- ret = _krb5_get_init_creds_opt_copy(context, in_options, &options);
+ again:
+ ret = krb5_init_creds_init(context, client, prompter, data, start_time, options, &ctx);
if (ret)
- return ret;
+ goto out;
- if (password == NULL &&
- options->opt_private->password == NULL &&
- options->opt_private->pk_init_ctx == NULL)
- {
+ ret = krb5_init_creds_set_service(context, ctx, in_tkt_service);
+ if (ret)
+ goto out;
+
+ if (prompter != NULL && ctx->password == NULL && password == NULL) {
krb5_prompt prompt;
krb5_data password_data;
char *p, *q;
free (q);
if (ret) {
memset (buf, 0, sizeof(buf));
- krb5_get_init_creds_opt_free(context, options);
ret = KRB5_LIBOS_PWDINTR;
- krb5_clear_error_string (context);
- return ret;
+ krb5_clear_error_message (context);
+ goto out;
}
password = password_data.data;
}
- if (options->opt_private->password == NULL) {
- ret = krb5_get_init_creds_opt_set_pa_password(context, options,
- password, NULL);
- if (ret) {
- krb5_get_init_creds_opt_free(context, options);
- memset(buf, 0, sizeof(buf));
- return ret;
- }
+ if (password) {
+ ret = krb5_init_creds_set_password(context, ctx, password);
+ if (ret)
+ goto out;
}
- ret = krb5_get_init_creds(context, creds, client, prompter,
- data, start_time, in_tkt_service, options);
- krb5_get_init_creds_opt_free(context, options);
+ ret = krb5_init_creds_get(context, ctx);
+
+ if (ret == 0)
+ process_last_request(context, options, ctx);
+
+
+ if (ret == KRB5KDC_ERR_KEY_EXPIRED && chpw == 0) {
+ char buf2[1024];
+
+ /* try to avoid recursion */
+ if (in_tkt_service != NULL && strcmp(in_tkt_service, "kadmin/changepw") == 0)
+ goto out;
+
+ /* don't try to change password where then where none */
+ if (prompter == NULL)
+ goto out;
+
+ ret = change_password (context,
+ client,
+ ctx->password,
+ buf2,
+ sizeof(buf),
+ prompter,
+ data,
+ options);
+ if (ret)
+ goto out;
+ chpw = 1;
+ krb5_init_creds_free(context, ctx);
+ goto again;
+ }
+
+ out:
+ if (ret == 0)
+ krb5_init_creds_get_creds(context, ctx, creds);
+
+ if (ctx)
+ krb5_init_creds_free(context, ctx);
+
memset(buf, 0, sizeof(buf));
return ret;
}
-static krb5_error_code
-init_creds_keyblock_key_proc (krb5_context context,
- krb5_enctype type,
- krb5_salt salt,
- krb5_const_pointer keyseed,
- krb5_keyblock **key)
-{
- return krb5_copy_keyblock (context, keyseed, key);
-}
+/**
+ * Get new credentials using keyblock.
+ *
+ * @ingroup krb5_credential
+ */
-krb5_error_code KRB5_LIB_FUNCTION
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_get_init_creds_keyblock(krb5_context context,
krb5_creds *creds,
krb5_principal client,
const char *in_tkt_service,
krb5_get_init_creds_opt *options)
{
- struct krb5_get_init_creds_ctx ctx;
+ krb5_init_creds_context ctx;
krb5_error_code ret;
-
- ret = get_init_creds_common(context, client, start_time,
- in_tkt_service, options, &ctx);
+
+ memset(creds, 0, sizeof(*creds));
+
+ ret = krb5_init_creds_init(context, client, NULL, NULL, start_time, options, &ctx);
if (ret)
goto out;
- ret = krb5_get_in_cred (context,
- KDCOptions2int(ctx.flags),
- ctx.addrs,
- ctx.etypes,
- ctx.pre_auth_types,
- NULL,
- init_creds_keyblock_key_proc,
- keyblock,
- NULL,
- NULL,
- &ctx.cred,
- NULL);
-
- if (ret == 0 && creds)
- *creds = ctx.cred;
- else
- krb5_free_cred_contents (context, &ctx.cred);
+ ret = krb5_init_creds_set_service(context, ctx, in_tkt_service);
+ if (ret)
+ goto out;
+
+ ret = krb5_init_creds_set_keyblock(context, ctx, keyblock);
+ if (ret)
+ goto out;
+
+ ret = krb5_init_creds_get(context, ctx);
+
+ if (ret == 0)
+ process_last_request(context, options, ctx);
+
+ out:
+ if (ret == 0)
+ krb5_init_creds_get_creds(context, ctx, creds);
+
+ if (ctx)
+ krb5_init_creds_free(context, ctx);
+
+ return ret;
+}
+
+/**
+ * Get new credentials using keytab.
+ *
+ * @ingroup krb5_credential
+ */
+
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_get_init_creds_keytab(krb5_context context,
+ krb5_creds *creds,
+ krb5_principal client,
+ krb5_keytab keytab,
+ krb5_deltat start_time,
+ const char *in_tkt_service,
+ krb5_get_init_creds_opt *options)
+{
+ krb5_init_creds_context ctx;
+ krb5_error_code ret;
+
+ memset(creds, 0, sizeof(*creds));
+
+ ret = krb5_init_creds_init(context, client, NULL, NULL, start_time, options, &ctx);
+ if (ret)
+ goto out;
+
+ ret = krb5_init_creds_set_service(context, ctx, in_tkt_service);
+ if (ret)
+ goto out;
+
+ ret = krb5_init_creds_set_keytab(context, ctx, keytab);
+ if (ret)
+ goto out;
+
+ ret = krb5_init_creds_get(context, ctx);
+ if (ret == 0)
+ process_last_request(context, options, ctx);
out:
- free_init_creds_ctx(context, &ctx);
+ if (ret == 0)
+ krb5_init_creds_get_creds(context, ctx, creds);
+
+ if (ctx)
+ krb5_init_creds_free(context, ctx);
+
return ret;
}
git.samba.org / samba.git / blobdiff