/* $NetBSD: cache.c,v 1.2 2017/01/28 21:31:49 christos Exp $ */
/*
* Copyright (c) 1997 - 2008 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Portions Copyright (c) 2009 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "krb5_locl.h"
/**
* @page krb5_ccache_intro The credential cache functions
* @section section_krb5_ccache Kerberos credential caches
*
* krb5_ccache structure holds a Kerberos credential cache.
*
* Heimdal support the follow types of credential caches:
*
* - SCC
* Store the credential in a database
* - FILE
* Store the credential in memory
* - MEMORY
* Store the credential in memory
* - API
* A credential cache server based solution for Mac OS X
* - KCM
* A credential cache server based solution for all platforms
*
* @subsection Example
*
* This is a minimalistic version of klist:
@code
#include <krb5/krb5.h>
int
main (int argc, char **argv)
{
krb5_context context;
krb5_cc_cursor cursor;
krb5_error_code ret;
krb5_ccache id;
krb5_creds creds;
if (krb5_init_context (&context) != 0)
errx(1, "krb5_context");
ret = krb5_cc_default (context, &id);
if (ret)
krb5_err(context, 1, ret, "krb5_cc_default");
ret = krb5_cc_start_seq_get(context, id, &cursor);
if (ret)
krb5_err(context, 1, ret, "krb5_cc_start_seq_get");
while((ret = krb5_cc_next_cred(context, id, &cursor, &creds)) == 0){
char *principal;
krb5_unparse_name(context, creds.server, &principal);
printf("principal: %s\\n", principal);
free(principal);
krb5_free_cred_contents (context, &creds);
}
ret = krb5_cc_end_seq_get(context, id, &cursor);
if (ret)
krb5_err(context, 1, ret, "krb5_cc_end_seq_get");
krb5_cc_close(context, id);
krb5_free_context(context);
return 0;
}
* @endcode
*/
/**
* Add a new ccache type with operations `ops', overwriting any
* existing one if `override'.
*
* @param context a Keberos context
* @param ops type of plugin symbol
* @param override flag to select if the registration is to overide
* an existing ops with the same name.
*
* @return Return an error code or 0, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_register(krb5_context context,
const krb5_cc_ops *ops,
krb5_boolean override)
{
int i;
for(i = 0; i < context->num_cc_ops && context->cc_ops[i]->prefix; i++) {
if(strcmp(context->cc_ops[i]->prefix, ops->prefix) == 0) {
if(!override) {
krb5_set_error_message(context,
KRB5_CC_TYPE_EXISTS,
N_("cache type %s already exists", "type"),
ops->prefix);
return KRB5_CC_TYPE_EXISTS;
}
break;
}
}
if(i == context->num_cc_ops) {
const krb5_cc_ops **o = realloc(rk_UNCONST(context->cc_ops),
(context->num_cc_ops + 1) *
sizeof(context->cc_ops[0]));
if(o == NULL) {
krb5_set_error_message(context, KRB5_CC_NOMEM,
N_("malloc: out of memory", ""));
return KRB5_CC_NOMEM;
}
context->cc_ops = o;
context->cc_ops[context->num_cc_ops] = NULL;
context->num_cc_ops++;
}
context->cc_ops[i] = ops;
return 0;
}
/*
* Allocate the memory for a `id' and the that function table to
* `ops'. Returns 0 or and error code.
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
_krb5_cc_allocate(krb5_context context,
const krb5_cc_ops *ops,
krb5_ccache *id)
{
krb5_ccache p;
p = calloc(1, sizeof(*p));
if (p == NULL) {
krb5_set_error_message(context, KRB5_CC_NOMEM,
N_("malloc: out of memory", ""));
return KRB5_CC_NOMEM;
}
p->ops = ops;
*id = p;
return 0;
}
/*
* Allocate memory for a new ccache in `id' with operations `ops'
* and name `residual'. Return 0 or an error code.
*/
static krb5_error_code
allocate_ccache (krb5_context context,
const krb5_cc_ops *ops,
const char *residual,
krb5_ccache *id)
{
krb5_error_code ret;
#ifdef KRB5_USE_PATH_TOKENS
char * exp_residual = NULL;
int filepath;
filepath = (strcmp("FILE", ops->prefix) == 0
|| strcmp("DIR", ops->prefix) == 0
|| strcmp("SCC", ops->prefix) == 0);
ret = _krb5_expand_path_tokens(context, residual, filepath, &exp_residual);
if (ret)
return ret;
residual = exp_residual;
#endif
ret = _krb5_cc_allocate(context, ops, id);
if (ret) {
#ifdef KRB5_USE_PATH_TOKENS
if (exp_residual)
free(exp_residual);
#endif
return ret;
}
ret = (*id)->ops->resolve(context, id, residual);
if(ret) {
free(*id);
*id = NULL;
}
#ifdef KRB5_USE_PATH_TOKENS
if (exp_residual)
free(exp_residual);
#endif
return ret;
}
static int
is_possible_path_name(const char * name)
{
const char * colon;
if ((colon = strchr(name, ':')) == NULL)
return TRUE;
#ifdef _WIN32
/* <drive letter>:\path\to\cache ? */
if (colon == name + 1 &&
strchr(colon + 1, ':') == NULL)
return TRUE;
#endif
return FALSE;
}
/**
* Find and allocate a ccache in `id' from the specification in `residual'.
* If the ccache name doesn't contain any colon, interpret it as a file name.
*
* @param context a Keberos context.
* @param name string name of a credential cache.
* @param id return pointer to a found credential cache.
*
* @return Return 0 or an error code. In case of an error, id is set
* to NULL, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_resolve(krb5_context context,
const char *name,
krb5_ccache *id)
{
int i;
*id = NULL;
for(i = 0; i < context->num_cc_ops && context->cc_ops[i]->prefix; i++) {
size_t prefix_len = strlen(context->cc_ops[i]->prefix);
if(strncmp(context->cc_ops[i]->prefix, name, prefix_len) == 0
&& name[prefix_len] == ':') {
return allocate_ccache (context, context->cc_ops[i],
name + prefix_len + 1,
id);
}
}
if (is_possible_path_name(name))
return allocate_ccache (context, &krb5_fcc_ops, name, id);
else {
krb5_set_error_message(context, KRB5_CC_UNKNOWN_TYPE,
N_("unknown ccache type %s", "name"), name);
return KRB5_CC_UNKNOWN_TYPE;
}
}
/**
* Generates a new unique ccache of `type` in `id'. If `type' is NULL,
* the library chooses the default credential cache type. The supplied
* `hint' (that can be NULL) is a string that the credential cache
* type can use to base the name of the credential on, this is to make
* it easier for the user to differentiate the credentials.
*
* @return Return an error code or 0, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_new_unique(krb5_context context, const char *type,
const char *hint, krb5_ccache *id)
{
const krb5_cc_ops *ops;
krb5_error_code ret;
ops = krb5_cc_get_prefix_ops(context, type);
if (ops == NULL) {
krb5_set_error_message(context, KRB5_CC_UNKNOWN_TYPE,
"Credential cache type %s is unknown", type);
return KRB5_CC_UNKNOWN_TYPE;
}
ret = _krb5_cc_allocate(context, ops, id);
if (ret)
return ret;
ret = (*id)->ops->gen_new(context, id);
if (ret) {
free(*id);
*id = NULL;
}
return ret;
}
/**
* Return the name of the ccache `id'
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION const char* KRB5_LIB_CALL
krb5_cc_get_name(krb5_context context,
krb5_ccache id)
{
return id->ops->get_name(context, id);
}
/**
* Return the type of the ccache `id'.
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION const char* KRB5_LIB_CALL
krb5_cc_get_type(krb5_context context,
krb5_ccache id)
{
return id->ops->prefix;
}
/**
* Return the complete resolvable name the cache
* @param context a Keberos context
* @param id return pointer to a found credential cache
* @param str the returned name of a credential cache, free with krb5_xfree()
*
* @return Returns 0 or an error (and then *str is set to NULL).
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_get_full_name(krb5_context context,
krb5_ccache id,
char **str)
{
const char *type, *name;
*str = NULL;
type = krb5_cc_get_type(context, id);
if (type == NULL) {
krb5_set_error_message(context, KRB5_CC_UNKNOWN_TYPE,
"cache have no name of type");
return KRB5_CC_UNKNOWN_TYPE;
}
name = krb5_cc_get_name(context, id);
if (name == NULL) {
krb5_set_error_message(context, KRB5_CC_BADNAME,
"cache of type %s have no name", type);
return KRB5_CC_BADNAME;
}
if (asprintf(str, "%s:%s", type, name) == -1) {
*str = NULL;
return krb5_enomem(context);
}
return 0;
}
/**
* Return krb5_cc_ops of a the ccache `id'.
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION const krb5_cc_ops * KRB5_LIB_CALL
krb5_cc_get_ops(krb5_context context, krb5_ccache id)
{
return id->ops;
}
/*
* Expand variables in `str' into `res'
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
_krb5_expand_default_cc_name(krb5_context context, const char *str, char **res)
{
int filepath;
filepath = (strncmp("FILE:", str, 5) == 0
|| strncmp("DIR:", str, 4) == 0
|| strncmp("SCC:", str, 4) == 0);
return _krb5_expand_path_tokens(context, str, filepath, res);
}
/*
* Return non-zero if envirnoment that will determine default krb5cc
* name has changed.
*/
static int
environment_changed(krb5_context context)
{
const char *e;
/* if the cc name was set, don't change it */
if (context->default_cc_name_set)
return 0;
/* XXX performance: always ask KCM/API if default name has changed */
if (context->default_cc_name &&
(strncmp(context->default_cc_name, "KCM:", 4) == 0 ||
strncmp(context->default_cc_name, "API:", 4) == 0))
return 1;
if(issuid())
return 0;
e = getenv("KRB5CCNAME");
if (e == NULL) {
if (context->default_cc_name_env) {
free(context->default_cc_name_env);
context->default_cc_name_env = NULL;
return 1;
}
} else {
if (context->default_cc_name_env == NULL)
return 1;
if (strcmp(e, context->default_cc_name_env) != 0)
return 1;
}
return 0;
}
/**
* Switch the default default credential cache for a specific
* credcache type (and name for some implementations).
*
* @return Return an error code or 0, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_switch(krb5_context context, krb5_ccache id)
{
#ifdef _WIN32
_krb5_set_default_cc_name_to_registry(context, id);
#endif
if (id->ops->set_default == NULL)
return 0;
return (*id->ops->set_default)(context, id);
}
/**
* Return true if the default credential cache support switch
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_boolean KRB5_LIB_CALL
krb5_cc_support_switch(krb5_context context, const char *type)
{
const krb5_cc_ops *ops;
ops = krb5_cc_get_prefix_ops(context, type);
if (ops && ops->set_default)
return 1;
return FALSE;
}
/**
* Set the default cc name for `context' to `name'.
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_set_default_name(krb5_context context, const char *name)
{
krb5_error_code ret = 0;
char *p = NULL, *exp_p = NULL;
int filepath;
const krb5_cc_ops *ops = KRB5_DEFAULT_CCTYPE;
if (name == NULL) {
const char *e = NULL;
if (!issuid()) {
e = getenv("KRB5CCNAME");
if (e) {
p = strdup(e);
if (context->default_cc_name_env)
free(context->default_cc_name_env);
context->default_cc_name_env = strdup(e);
}
}
#ifdef _WIN32
if (p == NULL) {
p = _krb5_get_default_cc_name_from_registry(context);
}
#endif
if (p == NULL) {
e = krb5_config_get_string(context, NULL, "libdefaults",
"default_cc_name", NULL);
if (e) {
ret = _krb5_expand_default_cc_name(context, e, &p);
if (ret)
return ret;
}
}
if (p == NULL) {
e = krb5_config_get_string(context, NULL, "libdefaults",
"default_cc_type", NULL);
if (e) {
ops = krb5_cc_get_prefix_ops(context, e);
if (ops == NULL) {
krb5_set_error_message(context,
KRB5_CC_UNKNOWN_TYPE,
"Credential cache type %s "
"is unknown", e);
return KRB5_CC_UNKNOWN_TYPE;
}
}
}
#ifdef _WIN32
if (p == NULL) {
/*
* If the MSLSA ccache type has a principal name,
* use it as the default.
*/
krb5_ccache id;
ret = krb5_cc_resolve(context, "MSLSA:", &id);
if (ret == 0) {
krb5_principal princ;
ret = krb5_cc_get_principal(context, id, &princ);
if (ret == 0) {
krb5_free_principal(context, princ);
p = strdup("MSLSA:");
}
krb5_cc_close(context, id);
}
}
if (p == NULL) {
/*
* If the API:krb5cc ccache can be resolved,
* use it as the default.
*/
krb5_ccache api_id;
ret = krb5_cc_resolve(context, "API:krb5cc", &api_id);
if (ret == 0)
krb5_cc_close(context, api_id);
}
/* Otherwise, fallback to the FILE ccache */
#endif
if (p == NULL) {
ret = (*ops->get_default_name)(context, &p);
if (ret)
return ret;
}
context->default_cc_name_set = 0;
} else {
p = strdup(name);
if (p == NULL)
return krb5_enomem(context);
context->default_cc_name_set = 1;
}
filepath = (strncmp("FILE:", p, 5) == 0
|| strncmp("DIR:", p, 4) == 0
|| strncmp("SCC:", p, 4) == 0);
ret = _krb5_expand_path_tokens(context, p, filepath, &exp_p);
free(p);
p = exp_p;
if (ret)
return ret;
if (context->default_cc_name)
free(context->default_cc_name);
context->default_cc_name = p;
return 0;
}
/**
* Return a pointer to a context static string containing the default
* ccache name.
*
* @return String to the default credential cache name.
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION const char* KRB5_LIB_CALL
krb5_cc_default_name(krb5_context context)
{
if (context->default_cc_name == NULL || environment_changed(context))
krb5_cc_set_default_name(context, NULL);
return context->default_cc_name;
}
/**
* Open the default ccache in `id'.
*
* @return Return an error code or 0, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_default(krb5_context context,
krb5_ccache *id)
{
const char *p = krb5_cc_default_name(context);
if (p == NULL)
return krb5_enomem(context);
return krb5_cc_resolve(context, p, id);
}
/**
* Create a new ccache in `id' for `primary_principal'.
*
* @return Return an error code or 0, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_initialize(krb5_context context,
krb5_ccache id,
krb5_principal primary_principal)
{
krb5_error_code ret;
ret = (*id->ops->init)(context, id, primary_principal);
if (ret == 0)
id->initialized = 1;
return ret;
}
/**
* Remove the ccache `id'.
*
* @return Return an error code or 0, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_destroy(krb5_context context,
krb5_ccache id)
{
krb5_error_code ret;
ret = (*id->ops->destroy)(context, id);
krb5_cc_close (context, id);
return ret;
}
/**
* Stop using the ccache `id' and free the related resources.
*
* @return Return an error code or 0, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_close(krb5_context context,
krb5_ccache id)
{
krb5_error_code ret;
ret = (*id->ops->close)(context, id);
free(id);
return ret;
}
/**
* Store `creds' in the ccache `id'.
*
* @return Return an error code or 0, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_store_cred(krb5_context context,
krb5_ccache id,
krb5_creds *creds)
{
krb5_error_code ret;
krb5_data realm;
ret = (*id->ops->store)(context, id, creds);
/* Look for and mark the first root TGT's realm as the start realm */
if (ret == 0 && id->initialized &&
krb5_principal_is_root_krbtgt(context, creds->server)) {
id->initialized = 0;
realm.length = strlen(creds->server->realm);
realm.data = creds->server->realm;
(void) krb5_cc_set_config(context, id, NULL, "start_realm", &realm);
} else if (ret == 0 && id->initialized &&
krb5_is_config_principal(context, creds->server) &&
strcmp(creds->server->name.name_string.val[1], "start_realm") == 0) {
/*
* But if the caller is storing a start_realm ccconfig, then
* stop looking for root TGTs to mark as the start_realm.
*
* By honoring any start_realm cc config stored, we interop
* both, with ccache implementations that don't preserve
* insertion order, and Kerberos implementations that store this
* cc config before the TGT.
*/
id->initialized = 0;
}
return ret;
}
/**
* Retrieve the credential identified by `mcreds' (and `whichfields')
* from `id' in `creds'. 'creds' must be free by the caller using
* krb5_free_cred_contents.
*
* @param context A Kerberos 5 context
* @param id a Kerberos 5 credential cache
* @param whichfields what fields to use for matching credentials, same
* flags as whichfields in krb5_compare_creds()
* @param mcreds template credential to use for comparing
* @param creds returned credential, free with krb5_free_cred_contents()
*
* @return Return an error code or 0, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_retrieve_cred(krb5_context context,
krb5_ccache id,
krb5_flags whichfields,
const krb5_creds *mcreds,
krb5_creds *creds)
{
krb5_error_code ret;
krb5_cc_cursor cursor;
if (id->ops->retrieve != NULL) {
return (*id->ops->retrieve)(context, id, whichfields,
mcreds, creds);
}
ret = krb5_cc_start_seq_get(context, id, &cursor);
if (ret)
return ret;
while((ret = krb5_cc_next_cred(context, id, &cursor, creds)) == 0){
if(krb5_compare_creds(context, whichfields, mcreds, creds)){
ret = 0;
break;
}
krb5_free_cred_contents (context, creds);
}
krb5_cc_end_seq_get(context, id, &cursor);
return ret;
}
/**
* Return the principal of `id' in `principal'.
*
* @return Return an error code or 0, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_get_principal(krb5_context context,
krb5_ccache id,
krb5_principal *principal)
{
return (*id->ops->get_princ)(context, id, principal);
}
/**
* Start iterating over `id', `cursor' is initialized to the
* beginning. Caller must free the cursor with krb5_cc_end_seq_get().
*
* @return Return an error code or 0, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_start_seq_get (krb5_context context,
const krb5_ccache id,
krb5_cc_cursor *cursor)
{
return (*id->ops->get_first)(context, id, cursor);
}
/**
* Retrieve the next cred pointed to by (`id', `cursor') in `creds'
* and advance `cursor'.
*
* @return Return an error code or 0, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_next_cred (krb5_context context,
const krb5_ccache id,
krb5_cc_cursor *cursor,
krb5_creds *creds)
{
return (*id->ops->get_next)(context, id, cursor, creds);
}
/**
* Destroy the cursor `cursor'.
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_end_seq_get (krb5_context context,
const krb5_ccache id,
krb5_cc_cursor *cursor)
{
return (*id->ops->end_get)(context, id, cursor);
}
/**
* Remove the credential identified by `cred', `which' from `id'.
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_remove_cred(krb5_context context,
krb5_ccache id,
krb5_flags which,
krb5_creds *cred)
{
if(id->ops->remove_cred == NULL) {
krb5_set_error_message(context,
EACCES,
"ccache %s does not support remove_cred",
id->ops->prefix);
return EACCES; /* XXX */
}
return (*id->ops->remove_cred)(context, id, which, cred);
}
/**
* Set the flags of `id' to `flags'.
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_set_flags(krb5_context context,
krb5_ccache id,
krb5_flags flags)
{
return (*id->ops->set_flags)(context, id, flags);
}
/**
* Get the flags of `id', store them in `flags'.
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_get_flags(krb5_context context,
krb5_ccache id,
krb5_flags *flags)
{
*flags = 0;
return 0;
}
/**
* Copy the contents of `from' to `to' if the given match function
* return true.
*
* @param context A Kerberos 5 context.
* @param from the cache to copy data from.
* @param to the cache to copy data to.
* @param match a match function that should return TRUE if cred argument should be copied, if NULL, all credentials are copied.
* @param matchctx context passed to match function.
* @param matched set to true if there was a credential that matched, may be NULL.
*
* @return Return an error code or 0, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_copy_match_f(krb5_context context,
const krb5_ccache from,
krb5_ccache to,
krb5_boolean (*match)(krb5_context, void *, const krb5_creds *),
void *matchctx,
unsigned int *matched)
{
krb5_error_code ret;
krb5_cc_cursor cursor;
krb5_creds cred;
krb5_principal princ;
if (matched)
*matched = 0;
ret = krb5_cc_get_principal(context, from, &princ);
if (ret)
return ret;
ret = krb5_cc_initialize(context, to, princ);
if (ret) {
krb5_free_principal(context, princ);
return ret;
}
ret = krb5_cc_start_seq_get(context, from, &cursor);
if (ret) {
krb5_free_principal(context, princ);
return ret;
}
while ((ret = krb5_cc_next_cred(context, from, &cursor, &cred)) == 0) {
if (match == NULL || (*match)(context, matchctx, &cred)) {
if (matched)
(*matched)++;
ret = krb5_cc_store_cred(context, to, &cred);
if (ret)
break;
}
krb5_free_cred_contents(context, &cred);
}
krb5_cc_end_seq_get(context, from, &cursor);
krb5_free_principal(context, princ);
if (ret == KRB5_CC_END)
ret = 0;
return ret;
}
/**
* Just like krb5_cc_copy_match_f(), but copy everything.
*
* @ingroup @krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_copy_cache(krb5_context context,
const krb5_ccache from,
krb5_ccache to)
{
return krb5_cc_copy_match_f(context, from, to, NULL, NULL, NULL);
}
/**
* Return the version of `id'.
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_get_version(krb5_context context,
const krb5_ccache id)
{
if(id->ops->get_version)
return (*id->ops->get_version)(context, id);
else
return 0;
}
/**
* Clear `mcreds' so it can be used with krb5_cc_retrieve_cred
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION void KRB5_LIB_CALL
krb5_cc_clear_mcred(krb5_creds *mcred)
{
memset(mcred, 0, sizeof(*mcred));
}
/**
* Get the cc ops that is registered in `context' to handle the
* prefix. prefix can be a complete credential cache name or a
* prefix, the function will only use part up to the first colon (:)
* if there is one. If prefix the argument is NULL, the default ccache
* implemtation is returned.
*
* @return Returns NULL if ops not found.
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION const krb5_cc_ops * KRB5_LIB_CALL
krb5_cc_get_prefix_ops(krb5_context context, const char *prefix)
{
char *p, *p1;
int i;
if (prefix == NULL)
return KRB5_DEFAULT_CCTYPE;
/* Is absolute path? Or UNC path? */
if (ISPATHSEP(prefix[0]))
return &krb5_fcc_ops;
#ifdef _WIN32
/* Is drive letter? */
if (isalpha(prefix[0]) && prefix[1] == ':')
return &krb5_fcc_ops;
#endif
p = strdup(prefix);
if (p == NULL) {
krb5_enomem(context);
return NULL;
}
p1 = strchr(p, ':');
if (p1)
*p1 = '\0';
for(i = 0; i < context->num_cc_ops && context->cc_ops[i]->prefix; i++) {
if(strcmp(context->cc_ops[i]->prefix, p) == 0) {
free(p);
return context->cc_ops[i];
}
}
free(p);
return NULL;
}
struct krb5_cc_cache_cursor_data {
const krb5_cc_ops *ops;
krb5_cc_cursor cursor;
};
/**
* Start iterating over all caches of specified type. See also
* krb5_cccol_cursor_new().
* @param context A Kerberos 5 context
* @param type optional type to iterate over, if NULL, the default cache is used.
* @param cursor cursor should be freed with krb5_cc_cache_end_seq_get().
*
* @return Return an error code or 0, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_cache_get_first (krb5_context context,
const char *type,
krb5_cc_cache_cursor *cursor)
{
const krb5_cc_ops *ops;
krb5_error_code ret;
if (type == NULL)
type = krb5_cc_default_name(context);
ops = krb5_cc_get_prefix_ops(context, type);
if (ops == NULL) {
krb5_set_error_message(context, KRB5_CC_UNKNOWN_TYPE,
"Unknown type \"%s\" when iterating "
"trying to iterate the credential caches", type);
return KRB5_CC_UNKNOWN_TYPE;
}
if (ops->get_cache_first == NULL) {
krb5_set_error_message(context, KRB5_CC_NOSUPP,
N_("Credential cache type %s doesn't support "
"iterations over caches", "type"),
ops->prefix);
return KRB5_CC_NOSUPP;
}
*cursor = calloc(1, sizeof(**cursor));
if (*cursor == NULL)
return krb5_enomem(context);
(*cursor)->ops = ops;
ret = ops->get_cache_first(context, &(*cursor)->cursor);
if (ret) {
free(*cursor);
*cursor = NULL;
}
return ret;
}
/**
* Retrieve the next cache pointed to by (`cursor') in `id'
* and advance `cursor'.
*
* @param context A Kerberos 5 context
* @param cursor the iterator cursor, returned by krb5_cc_cache_get_first()
* @param id next ccache
*
* @return Return 0 or an error code. Returns KRB5_CC_END when the end
* of caches is reached, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_cache_next (krb5_context context,
krb5_cc_cache_cursor cursor,
krb5_ccache *id)
{
return cursor->ops->get_cache_next(context, cursor->cursor, id);
}
/**
* Destroy the cursor `cursor'.
*
* @return Return an error code or 0, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_cache_end_seq_get (krb5_context context,
krb5_cc_cache_cursor cursor)
{
krb5_error_code ret;
ret = cursor->ops->end_cache_get(context, cursor->cursor);
cursor->ops = NULL;
free(cursor);
return ret;
}
/**
* Search for a matching credential cache that have the
* `principal' as the default principal. On success, `id' needs to be
* freed with krb5_cc_close() or krb5_cc_destroy().
*
* @param context A Kerberos 5 context
* @param client The principal to search for
* @param id the returned credential cache
*
* @return On failure, error code is returned and `id' is set to NULL.
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_cache_match (krb5_context context,
krb5_principal client,
krb5_ccache *id)
{
krb5_cccol_cursor cursor;
krb5_error_code ret;
krb5_ccache cache = NULL;
krb5_ccache expired_match = NULL;
*id = NULL;
ret = krb5_cccol_cursor_new (context, &cursor);
if (ret)
return ret;
while (krb5_cccol_cursor_next(context, cursor, &cache) == 0 && cache != NULL) {
krb5_principal principal;
krb5_boolean match;
time_t lifetime;
ret = krb5_cc_get_principal(context, cache, &principal);
if (ret)
goto next;
if (client->name.name_string.len == 0)
match = (strcmp(client->realm, principal->realm) == 0);
else
match = krb5_principal_compare(context, principal, client);
krb5_free_principal(context, principal);
if (!match)
goto next;
if (expired_match == NULL &&
(krb5_cc_get_lifetime(context, cache, &lifetime) != 0 || lifetime == 0)) {
expired_match = cache;
cache = NULL;
goto next;
}
break;
next:
if (cache)
krb5_cc_close(context, cache);
cache = NULL;
}
krb5_cccol_cursor_free(context, &cursor);
if (cache == NULL && expired_match) {
cache = expired_match;
expired_match = NULL;
} else if (expired_match) {
krb5_cc_close(context, expired_match);
} else if (cache == NULL) {
char *str;
krb5_unparse_name(context, client, &str);
krb5_set_error_message(context, KRB5_CC_NOTFOUND,
N_("Principal %s not found in any "
"credential cache", ""),
str ? str : "<out of memory>");
if (str)
free(str);
return KRB5_CC_NOTFOUND;
}
*id = cache;
return 0;
}
/**
* Move the content from one credential cache to another. The
* operation is an atomic switch.
*
* @param context a Keberos context
* @param from the credential cache to move the content from
* @param to the credential cache to move the content to
* @return On sucess, from is freed. On failure, error code is
* returned and from and to are both still allocated, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_move(krb5_context context, krb5_ccache from, krb5_ccache to)
{
krb5_error_code ret;
if (strcmp(from->ops->prefix, to->ops->prefix) != 0) {
krb5_set_error_message(context, KRB5_CC_NOSUPP,
N_("Moving credentials between diffrent "
"types not yet supported", ""));
return KRB5_CC_NOSUPP;
}
ret = (*to->ops->move)(context, from, to);
if (ret == 0) {
memset(from, 0, sizeof(*from));
free(from);
}
return ret;
}
#define KRB5_CONF_NAME "krb5_ccache_conf_data"
#define KRB5_REALM_NAME "X-CACHECONF:"
static krb5_error_code
build_conf_principals(krb5_context context, krb5_ccache id,
krb5_const_principal principal,
const char *name, krb5_creds *cred)
{
krb5_principal client;
krb5_error_code ret;
char *pname = NULL;
memset(cred, 0, sizeof(*cred));
ret = krb5_cc_get_principal(context, id, &client);
if (ret)
return ret;
if (principal) {
ret = krb5_unparse_name(context, principal, &pname);
if (ret)
return ret;
}
ret = krb5_make_principal(context, &cred->server,
KRB5_REALM_NAME,
KRB5_CONF_NAME, name, pname, NULL);
free(pname);
if (ret) {
krb5_free_principal(context, client);
return ret;
}
ret = krb5_copy_principal(context, client, &cred->client);
krb5_free_principal(context, client);
return ret;
}
/**
* Return TRUE (non zero) if the principal is a configuration
* principal (generated part of krb5_cc_set_config()). Returns FALSE
* (zero) if not a configuration principal.
*
* @param context a Keberos context
* @param principal principal to check if it a configuration principal
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_boolean KRB5_LIB_CALL
krb5_is_config_principal(krb5_context context,
krb5_const_principal principal)
{
if (strcmp(principal->realm, KRB5_REALM_NAME) != 0)
return FALSE;
if (principal->name.name_string.len == 0 ||
strcmp(principal->name.name_string.val[0], KRB5_CONF_NAME) != 0)
return FALSE;
return TRUE;
}
/**
* Store some configuration for the credential cache in the cache.
* Existing configuration under the same name is over-written.
*
* @param context a Keberos context
* @param id the credential cache to store the data for
* @param principal configuration for a specific principal, if
* NULL, global for the whole cache.
* @param name name under which the configuraion is stored.
* @param data data to store, if NULL, configure is removed.
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_set_config(krb5_context context, krb5_ccache id,
krb5_const_principal principal,
const char *name, krb5_data *data)
{
krb5_error_code ret;
krb5_creds cred;
ret = build_conf_principals(context, id, principal, name, &cred);
if (ret)
goto out;
/* Remove old configuration */
ret = krb5_cc_remove_cred(context, id, 0, &cred);
if (ret && ret != KRB5_CC_NOTFOUND)
goto out;
if (data) {
/* not that anyone care when this expire */
cred.times.authtime = time(NULL);
cred.times.endtime = cred.times.authtime + 3600 * 24 * 30;
ret = krb5_data_copy(&cred.ticket, data->data, data->length);
if (ret)
goto out;
ret = krb5_cc_store_cred(context, id, &cred);
}
out:
krb5_free_cred_contents (context, &cred);
return ret;
}
/**
* Get some configuration for the credential cache in the cache.
*
* @param context a Keberos context
* @param id the credential cache to store the data for
* @param principal configuration for a specific principal, if
* NULL, global for the whole cache.
* @param name name under which the configuraion is stored.
* @param data data to fetched, free with krb5_data_free()
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_get_config(krb5_context context, krb5_ccache id,
krb5_const_principal principal,
const char *name, krb5_data *data)
{
krb5_creds mcred, cred;
krb5_error_code ret;
memset(&cred, 0, sizeof(cred));
krb5_data_zero(data);
ret = build_conf_principals(context, id, principal, name, &mcred);
if (ret)
goto out;
ret = krb5_cc_retrieve_cred(context, id, 0, &mcred, &cred);
if (ret)
goto out;
ret = krb5_data_copy(data, cred.ticket.data, cred.ticket.length);
out:
krb5_free_cred_contents (context, &cred);
krb5_free_cred_contents (context, &mcred);
return ret;
}
/*
*
*/
struct krb5_cccol_cursor_data {
int idx;
krb5_cc_cache_cursor cursor;
};
/**
* Get a new cache interation cursor that will interate over all
* credentials caches independent of type.
*
* @param context a Keberos context
* @param cursor passed into krb5_cccol_cursor_next() and free with krb5_cccol_cursor_free().
*
* @return Returns 0 or and error code, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cccol_cursor_new(krb5_context context, krb5_cccol_cursor *cursor)
{
*cursor = calloc(1, sizeof(**cursor));
if (*cursor == NULL)
return krb5_enomem(context);
(*cursor)->idx = 0;
(*cursor)->cursor = NULL;
return 0;
}
/**
* Get next credential cache from the iteration.
*
* @param context A Kerberos 5 context
* @param cursor the iteration cursor
* @param cache the returned cursor, pointer is set to NULL on failure
* and a cache on success. The returned cache needs to be freed
* with krb5_cc_close() or destroyed with krb5_cc_destroy().
* MIT Kerberos behavies slightly diffrent and sets cache to NULL
* when all caches are iterated over and return 0.
*
* @return Return 0 or and error, KRB5_CC_END is returned at the end
* of iteration. See krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cccol_cursor_next(krb5_context context, krb5_cccol_cursor cursor,
krb5_ccache *cache)
{
krb5_error_code ret;
*cache = NULL;
while (cursor->idx < context->num_cc_ops) {
if (cursor->cursor == NULL) {
ret = krb5_cc_cache_get_first (context,
context->cc_ops[cursor->idx]->prefix,
&cursor->cursor);
if (ret) {
cursor->idx++;
continue;
}
}
ret = krb5_cc_cache_next(context, cursor->cursor, cache);
if (ret == 0)
break;
krb5_cc_cache_end_seq_get(context, cursor->cursor);
cursor->cursor = NULL;
if (ret != KRB5_CC_END)
break;
cursor->idx++;
}
if (cursor->idx >= context->num_cc_ops) {
krb5_set_error_message(context, KRB5_CC_END,
N_("Reached end of credential caches", ""));
return KRB5_CC_END;
}
return 0;
}
/**
* End an iteration and free all resources, can be done before end is reached.
*
* @param context A Kerberos 5 context
* @param cursor the iteration cursor to be freed.
*
* @return Return 0 or and error, KRB5_CC_END is returned at the end
* of iteration. See krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cccol_cursor_free(krb5_context context, krb5_cccol_cursor *cursor)
{
krb5_cccol_cursor c = *cursor;
*cursor = NULL;
if (c) {
if (c->cursor)
krb5_cc_cache_end_seq_get(context, c->cursor);
free(c);
}
return 0;
}
/**
* Return the last time the credential cache was modified.
*
* @param context A Kerberos 5 context
* @param id The credential cache to probe
* @param mtime the last modification time, set to 0 on error.
* @return Return 0 or and error. See krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_last_change_time(krb5_context context,
krb5_ccache id,
krb5_timestamp *mtime)
{
*mtime = 0;
return (*id->ops->lastchange)(context, id, mtime);
}
/**
* Return the last modfication time for a cache collection. The query
* can be limited to a specific cache type. If the function return 0
* and mtime is 0, there was no credentials in the caches.
*
* @param context A Kerberos 5 context
* @param type The credential cache to probe, if NULL, all type are traversed.
* @param mtime the last modification time, set to 0 on error.
* @return Return 0 or and error. See krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cccol_last_change_time(krb5_context context,
const char *type,
krb5_timestamp *mtime)
{
krb5_cccol_cursor cursor;
krb5_error_code ret;
krb5_ccache id;
krb5_timestamp t = 0;
*mtime = 0;
ret = krb5_cccol_cursor_new (context, &cursor);
if (ret)
return ret;
while (krb5_cccol_cursor_next(context, cursor, &id) == 0 && id != NULL) {
if (type && strcmp(krb5_cc_get_type(context, id), type) != 0)
continue;
ret = krb5_cc_last_change_time(context, id, &t);
krb5_cc_close(context, id);
if (ret)
continue;
if (t > *mtime)
*mtime = t;
}
krb5_cccol_cursor_free(context, &cursor);
return 0;
}
/**
* Return a friendly name on credential cache. Free the result with krb5_xfree().
*
* @return Return an error code or 0, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_get_friendly_name(krb5_context context,
krb5_ccache id,
char **name)
{
krb5_error_code ret;
krb5_data data;
ret = krb5_cc_get_config(context, id, NULL, "FriendlyName", &data);
if (ret) {
krb5_principal principal;
ret = krb5_cc_get_principal(context, id, &principal);
if (ret)
return ret;
ret = krb5_unparse_name(context, principal, name);
krb5_free_principal(context, principal);
} else {
ret = asprintf(name, "%.*s", (int)data.length, (char *)data.data);
krb5_data_free(&data);
if (ret <= 0)
ret = krb5_enomem(context);
else
ret = 0;
}
return ret;
}
/**
* Set the friendly name on credential cache.
*
* @return Return an error code or 0, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_set_friendly_name(krb5_context context,
krb5_ccache id,
const char *name)
{
krb5_data data;
data.data = rk_UNCONST(name);
data.length = strlen(name);
return krb5_cc_set_config(context, id, NULL, "FriendlyName", &data);
}
/**
* Get the lifetime of the initial ticket in the cache
*
* Get the lifetime of the initial ticket in the cache, if the initial
* ticket was not found, the error code KRB5_CC_END is returned.
*
* @param context A Kerberos 5 context.
* @param id a credential cache
* @param t the relative lifetime of the initial ticket
*
* @return Return an error code or 0, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_get_lifetime(krb5_context context, krb5_ccache id, time_t *t)
{
krb5_data config_start_realm;
char *start_realm;
krb5_cc_cursor cursor;
krb5_error_code ret;
krb5_creds cred;
time_t now, endtime = 0;
*t = 0;
krb5_timeofday(context, &now);
ret = krb5_cc_get_config(context, id, NULL, "start_realm", &config_start_realm);
if (ret == 0) {
start_realm = strndup(config_start_realm.data, config_start_realm.length);
krb5_data_free(&config_start_realm);
} else {
krb5_principal client;
ret = krb5_cc_get_principal(context, id, &client);
if (ret)
return ret;
start_realm = strdup(krb5_principal_get_realm(context, client));
krb5_free_principal(context, client);
}
if (start_realm == NULL)
return krb5_enomem(context);
ret = krb5_cc_start_seq_get(context, id, &cursor);
if (ret) {
free(start_realm);
return ret;
}
while ((ret = krb5_cc_next_cred(context, id, &cursor, &cred)) == 0) {
/**
* If we find the start krbtgt in the cache, use that as the lifespan.
*/
if (krb5_principal_is_root_krbtgt(context, cred.server) &&
strcmp(cred.server->realm, start_realm) == 0) {
if (now < cred.times.endtime)
endtime = cred.times.endtime;
krb5_free_cred_contents(context, &cred);
break;
}
/*
* Skip config entries
*/
if (krb5_is_config_principal(context, cred.server)) {
krb5_free_cred_contents(context, &cred);
continue;
}
/**
* If there was no krbtgt, use the shortest lifetime of
* service tickets that have yet to expire. If all
* credentials are expired, krb5_cc_get_lifetime() will fail.
*/
if ((endtime == 0 || cred.times.endtime < endtime) && now < cred.times.endtime)
endtime = cred.times.endtime;
krb5_free_cred_contents(context, &cred);
}
free(start_realm);
/* if we found an endtime use that */
if (endtime) {
*t = endtime - now;
ret = 0;
}
krb5_cc_end_seq_get(context, id, &cursor);
return ret;
}
/**
* Set the time offset betwen the client and the KDC
*
* If the backend doesn't support KDC offset, use the context global setting.
*
* @param context A Kerberos 5 context.
* @param id a credential cache
* @param offset the offset in seconds
*
* @return Return an error code or 0, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_set_kdc_offset(krb5_context context, krb5_ccache id, krb5_deltat offset)
{
if (id->ops->set_kdc_offset == NULL) {
context->kdc_sec_offset = offset;
context->kdc_usec_offset = 0;
return 0;
}
return (*id->ops->set_kdc_offset)(context, id, offset);
}
/**
* Get the time offset betwen the client and the KDC
*
* If the backend doesn't support KDC offset, use the context global setting.
*
* @param context A Kerberos 5 context.
* @param id a credential cache
* @param offset the offset in seconds
*
* @return Return an error code or 0, see krb5_get_error_message().
*
* @ingroup krb5_ccache
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_cc_get_kdc_offset(krb5_context context, krb5_ccache id, krb5_deltat *offset)
{
if (id->ops->get_kdc_offset == NULL) {
*offset = context->kdc_sec_offset;
return 0;
}
return (*id->ops->get_kdc_offset)(context, id, offset);
}
#ifdef _WIN32
#define REGPATH_MIT_KRB5 "SOFTWARE\\MIT\\Kerberos5"
static char *
_get_default_cc_name_from_registry(krb5_context context, HKEY hkBase)
{
HKEY hk_k5 = 0;
LONG code;
char *ccname = NULL;
code = RegOpenKeyEx(hkBase,
REGPATH_MIT_KRB5,
0, KEY_READ, &hk_k5);
if (code != ERROR_SUCCESS)
return NULL;
ccname = _krb5_parse_reg_value_as_string(context, hk_k5, "ccname",
REG_NONE, 0);
RegCloseKey(hk_k5);
return ccname;
}
KRB5_LIB_FUNCTION char * KRB5_LIB_CALL
_krb5_get_default_cc_name_from_registry(krb5_context context)
{
char *ccname;
ccname = _get_default_cc_name_from_registry(context, HKEY_CURRENT_USER);
if (ccname == NULL)
ccname = _get_default_cc_name_from_registry(context,
HKEY_LOCAL_MACHINE);
return ccname;
}
KRB5_LIB_FUNCTION int KRB5_LIB_CALL
_krb5_set_default_cc_name_to_registry(krb5_context context, krb5_ccache id)
{
HKEY hk_k5 = 0;
LONG code;
int ret = -1;
char * ccname = NULL;
code = RegOpenKeyEx(HKEY_CURRENT_USER,
REGPATH_MIT_KRB5,
0, KEY_READ|KEY_WRITE, &hk_k5);
if (code != ERROR_SUCCESS)
return -1;
ret = asprintf(&ccname, "%s:%s", krb5_cc_get_type(context, id), krb5_cc_get_name(context, id));
if (ret < 0)
goto cleanup;
ret = _krb5_store_string_to_reg_value(context, hk_k5, "ccname",
REG_SZ, ccname, -1, 0);
cleanup:
if (ccname)
free(ccname);
RegCloseKey(hk_k5);
return ret;
}
#endif