several new kerberos related libraries and applications to FreeBSD: o kgetcred(1) allows one to manually get a ticket for a particular service. o kf(1) securily forwards ticket to another host through an authenticated and encrypted stream. o kcc(1) is an umbrella program around klist(1), kswitch(1), kgetcred(1) and other user kerberos operations. klist and kswitch are just symlinks to kcc(1) now. o kswitch(1) allows you to easily switch between kerberos credentials if you're running KCM. o hxtool(1) is a certificate management tool to use with PKINIT. o string2key(1) maps a password into key. o kdigest(8) is a userland tool to access the KDC's digest interface. o kimpersonate(8) creates a "fake" ticket for a service. We also now install manpages for some lirbaries that were not installed before, libheimntlm and libhx509. - The new HEIMDAL version no longer supports Kerberos 4. All users are recommended to switch to Kerberos 5. - Weak ciphers are now disabled by default. To enable DES support (used by telnet(8)), use "allow_weak_crypto" option in krb5.conf. - libtelnet, pam_ksu and pam_krb5 are now compiled with error on warnings disabled due to the function they use (krb5_get_err_text(3)) being deprecated. I plan to work on this next. - Heimdal's KDC now require sqlite to operate. We use the bundled version and install it as libheimsqlite. If some other FreeBSD components will require it in the future we can rename it to libbsdsqlite and use for these components as well. - This is not a latest Heimdal version, the new one was released while I was working on the update. I will update it to 1.5.2 soon, as it fixes some important bugs and security issues.
521 lines
12 KiB
C
521 lines
12 KiB
C
/*
|
|
* Copyright (c) 1997-2004 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"
|
|
|
|
typedef struct krb5_mcache {
|
|
char *name;
|
|
unsigned int refcnt;
|
|
int dead;
|
|
krb5_principal primary_principal;
|
|
struct link {
|
|
krb5_creds cred;
|
|
struct link *next;
|
|
} *creds;
|
|
struct krb5_mcache *next;
|
|
time_t mtime;
|
|
krb5_deltat kdc_offset;
|
|
} krb5_mcache;
|
|
|
|
static HEIMDAL_MUTEX mcc_mutex = HEIMDAL_MUTEX_INITIALIZER;
|
|
static struct krb5_mcache *mcc_head;
|
|
|
|
#define MCACHE(X) ((krb5_mcache *)(X)->data.data)
|
|
|
|
#define MISDEAD(X) ((X)->dead)
|
|
|
|
static const char* KRB5_CALLCONV
|
|
mcc_get_name(krb5_context context,
|
|
krb5_ccache id)
|
|
{
|
|
return MCACHE(id)->name;
|
|
}
|
|
|
|
static krb5_mcache * KRB5_CALLCONV
|
|
mcc_alloc(const char *name)
|
|
{
|
|
krb5_mcache *m, *m_c;
|
|
int ret = 0;
|
|
|
|
ALLOC(m, 1);
|
|
if(m == NULL)
|
|
return NULL;
|
|
if(name == NULL)
|
|
ret = asprintf(&m->name, "%p", m);
|
|
else
|
|
m->name = strdup(name);
|
|
if(ret < 0 || m->name == NULL) {
|
|
free(m);
|
|
return NULL;
|
|
}
|
|
/* check for dups first */
|
|
HEIMDAL_MUTEX_lock(&mcc_mutex);
|
|
for (m_c = mcc_head; m_c != NULL; m_c = m_c->next)
|
|
if (strcmp(m->name, m_c->name) == 0)
|
|
break;
|
|
if (m_c) {
|
|
free(m->name);
|
|
free(m);
|
|
HEIMDAL_MUTEX_unlock(&mcc_mutex);
|
|
return NULL;
|
|
}
|
|
|
|
m->dead = 0;
|
|
m->refcnt = 1;
|
|
m->primary_principal = NULL;
|
|
m->creds = NULL;
|
|
m->mtime = time(NULL);
|
|
m->kdc_offset = 0;
|
|
m->next = mcc_head;
|
|
mcc_head = m;
|
|
HEIMDAL_MUTEX_unlock(&mcc_mutex);
|
|
return m;
|
|
}
|
|
|
|
static krb5_error_code KRB5_CALLCONV
|
|
mcc_resolve(krb5_context context, krb5_ccache *id, const char *res)
|
|
{
|
|
krb5_mcache *m;
|
|
|
|
HEIMDAL_MUTEX_lock(&mcc_mutex);
|
|
for (m = mcc_head; m != NULL; m = m->next)
|
|
if (strcmp(m->name, res) == 0)
|
|
break;
|
|
HEIMDAL_MUTEX_unlock(&mcc_mutex);
|
|
|
|
if (m != NULL) {
|
|
m->refcnt++;
|
|
(*id)->data.data = m;
|
|
(*id)->data.length = sizeof(*m);
|
|
return 0;
|
|
}
|
|
|
|
m = mcc_alloc(res);
|
|
if (m == NULL) {
|
|
krb5_set_error_message(context, KRB5_CC_NOMEM,
|
|
N_("malloc: out of memory", ""));
|
|
return KRB5_CC_NOMEM;
|
|
}
|
|
|
|
(*id)->data.data = m;
|
|
(*id)->data.length = sizeof(*m);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static krb5_error_code KRB5_CALLCONV
|
|
mcc_gen_new(krb5_context context, krb5_ccache *id)
|
|
{
|
|
krb5_mcache *m;
|
|
|
|
m = mcc_alloc(NULL);
|
|
|
|
if (m == NULL) {
|
|
krb5_set_error_message(context, KRB5_CC_NOMEM,
|
|
N_("malloc: out of memory", ""));
|
|
return KRB5_CC_NOMEM;
|
|
}
|
|
|
|
(*id)->data.data = m;
|
|
(*id)->data.length = sizeof(*m);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static krb5_error_code KRB5_CALLCONV
|
|
mcc_initialize(krb5_context context,
|
|
krb5_ccache id,
|
|
krb5_principal primary_principal)
|
|
{
|
|
krb5_mcache *m = MCACHE(id);
|
|
m->dead = 0;
|
|
m->mtime = time(NULL);
|
|
return krb5_copy_principal (context,
|
|
primary_principal,
|
|
&m->primary_principal);
|
|
}
|
|
|
|
static int
|
|
mcc_close_internal(krb5_mcache *m)
|
|
{
|
|
if (--m->refcnt != 0)
|
|
return 0;
|
|
|
|
if (MISDEAD(m)) {
|
|
free (m->name);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static krb5_error_code KRB5_CALLCONV
|
|
mcc_close(krb5_context context,
|
|
krb5_ccache id)
|
|
{
|
|
if (mcc_close_internal(MCACHE(id)))
|
|
krb5_data_free(&id->data);
|
|
return 0;
|
|
}
|
|
|
|
static krb5_error_code KRB5_CALLCONV
|
|
mcc_destroy(krb5_context context,
|
|
krb5_ccache id)
|
|
{
|
|
krb5_mcache **n, *m = MCACHE(id);
|
|
struct link *l;
|
|
|
|
if (m->refcnt == 0)
|
|
krb5_abortx(context, "mcc_destroy: refcnt already 0");
|
|
|
|
if (!MISDEAD(m)) {
|
|
/* if this is an active mcache, remove it from the linked
|
|
list, and free all data */
|
|
HEIMDAL_MUTEX_lock(&mcc_mutex);
|
|
for(n = &mcc_head; n && *n; n = &(*n)->next) {
|
|
if(m == *n) {
|
|
*n = m->next;
|
|
break;
|
|
}
|
|
}
|
|
HEIMDAL_MUTEX_unlock(&mcc_mutex);
|
|
if (m->primary_principal != NULL) {
|
|
krb5_free_principal (context, m->primary_principal);
|
|
m->primary_principal = NULL;
|
|
}
|
|
m->dead = 1;
|
|
|
|
l = m->creds;
|
|
while (l != NULL) {
|
|
struct link *old;
|
|
|
|
krb5_free_cred_contents (context, &l->cred);
|
|
old = l;
|
|
l = l->next;
|
|
free (old);
|
|
}
|
|
m->creds = NULL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static krb5_error_code KRB5_CALLCONV
|
|
mcc_store_cred(krb5_context context,
|
|
krb5_ccache id,
|
|
krb5_creds *creds)
|
|
{
|
|
krb5_mcache *m = MCACHE(id);
|
|
krb5_error_code ret;
|
|
struct link *l;
|
|
|
|
if (MISDEAD(m))
|
|
return ENOENT;
|
|
|
|
l = malloc (sizeof(*l));
|
|
if (l == NULL) {
|
|
krb5_set_error_message(context, KRB5_CC_NOMEM,
|
|
N_("malloc: out of memory", ""));
|
|
return KRB5_CC_NOMEM;
|
|
}
|
|
l->next = m->creds;
|
|
m->creds = l;
|
|
memset (&l->cred, 0, sizeof(l->cred));
|
|
ret = krb5_copy_creds_contents (context, creds, &l->cred);
|
|
if (ret) {
|
|
m->creds = l->next;
|
|
free (l);
|
|
return ret;
|
|
}
|
|
m->mtime = time(NULL);
|
|
return 0;
|
|
}
|
|
|
|
static krb5_error_code KRB5_CALLCONV
|
|
mcc_get_principal(krb5_context context,
|
|
krb5_ccache id,
|
|
krb5_principal *principal)
|
|
{
|
|
krb5_mcache *m = MCACHE(id);
|
|
|
|
if (MISDEAD(m) || m->primary_principal == NULL)
|
|
return ENOENT;
|
|
return krb5_copy_principal (context,
|
|
m->primary_principal,
|
|
principal);
|
|
}
|
|
|
|
static krb5_error_code KRB5_CALLCONV
|
|
mcc_get_first (krb5_context context,
|
|
krb5_ccache id,
|
|
krb5_cc_cursor *cursor)
|
|
{
|
|
krb5_mcache *m = MCACHE(id);
|
|
|
|
if (MISDEAD(m))
|
|
return ENOENT;
|
|
|
|
*cursor = m->creds;
|
|
return 0;
|
|
}
|
|
|
|
static krb5_error_code KRB5_CALLCONV
|
|
mcc_get_next (krb5_context context,
|
|
krb5_ccache id,
|
|
krb5_cc_cursor *cursor,
|
|
krb5_creds *creds)
|
|
{
|
|
krb5_mcache *m = MCACHE(id);
|
|
struct link *l;
|
|
|
|
if (MISDEAD(m))
|
|
return ENOENT;
|
|
|
|
l = *cursor;
|
|
if (l != NULL) {
|
|
*cursor = l->next;
|
|
return krb5_copy_creds_contents (context,
|
|
&l->cred,
|
|
creds);
|
|
} else
|
|
return KRB5_CC_END;
|
|
}
|
|
|
|
static krb5_error_code KRB5_CALLCONV
|
|
mcc_end_get (krb5_context context,
|
|
krb5_ccache id,
|
|
krb5_cc_cursor *cursor)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static krb5_error_code KRB5_CALLCONV
|
|
mcc_remove_cred(krb5_context context,
|
|
krb5_ccache id,
|
|
krb5_flags which,
|
|
krb5_creds *mcreds)
|
|
{
|
|
krb5_mcache *m = MCACHE(id);
|
|
struct link **q, *p;
|
|
for(q = &m->creds, p = *q; p; p = *q) {
|
|
if(krb5_compare_creds(context, which, mcreds, &p->cred)) {
|
|
*q = p->next;
|
|
krb5_free_cred_contents(context, &p->cred);
|
|
free(p);
|
|
m->mtime = time(NULL);
|
|
} else
|
|
q = &p->next;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static krb5_error_code KRB5_CALLCONV
|
|
mcc_set_flags(krb5_context context,
|
|
krb5_ccache id,
|
|
krb5_flags flags)
|
|
{
|
|
return 0; /* XXX */
|
|
}
|
|
|
|
struct mcache_iter {
|
|
krb5_mcache *cache;
|
|
};
|
|
|
|
static krb5_error_code KRB5_CALLCONV
|
|
mcc_get_cache_first(krb5_context context, krb5_cc_cursor *cursor)
|
|
{
|
|
struct mcache_iter *iter;
|
|
|
|
iter = calloc(1, sizeof(*iter));
|
|
if (iter == NULL) {
|
|
krb5_set_error_message(context, ENOMEM,
|
|
N_("malloc: out of memory", ""));
|
|
return ENOMEM;
|
|
}
|
|
|
|
HEIMDAL_MUTEX_lock(&mcc_mutex);
|
|
iter->cache = mcc_head;
|
|
if (iter->cache)
|
|
iter->cache->refcnt++;
|
|
HEIMDAL_MUTEX_unlock(&mcc_mutex);
|
|
|
|
*cursor = iter;
|
|
return 0;
|
|
}
|
|
|
|
static krb5_error_code KRB5_CALLCONV
|
|
mcc_get_cache_next(krb5_context context, krb5_cc_cursor cursor, krb5_ccache *id)
|
|
{
|
|
struct mcache_iter *iter = cursor;
|
|
krb5_error_code ret;
|
|
krb5_mcache *m;
|
|
|
|
if (iter->cache == NULL)
|
|
return KRB5_CC_END;
|
|
|
|
HEIMDAL_MUTEX_lock(&mcc_mutex);
|
|
m = iter->cache;
|
|
if (m->next)
|
|
m->next->refcnt++;
|
|
iter->cache = m->next;
|
|
HEIMDAL_MUTEX_unlock(&mcc_mutex);
|
|
|
|
ret = _krb5_cc_allocate(context, &krb5_mcc_ops, id);
|
|
if (ret)
|
|
return ret;
|
|
|
|
(*id)->data.data = m;
|
|
(*id)->data.length = sizeof(*m);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static krb5_error_code KRB5_CALLCONV
|
|
mcc_end_cache_get(krb5_context context, krb5_cc_cursor cursor)
|
|
{
|
|
struct mcache_iter *iter = cursor;
|
|
|
|
if (iter->cache)
|
|
mcc_close_internal(iter->cache);
|
|
iter->cache = NULL;
|
|
free(iter);
|
|
return 0;
|
|
}
|
|
|
|
static krb5_error_code KRB5_CALLCONV
|
|
mcc_move(krb5_context context, krb5_ccache from, krb5_ccache to)
|
|
{
|
|
krb5_mcache *mfrom = MCACHE(from), *mto = MCACHE(to);
|
|
struct link *creds;
|
|
krb5_principal principal;
|
|
krb5_mcache **n;
|
|
|
|
HEIMDAL_MUTEX_lock(&mcc_mutex);
|
|
|
|
/* drop the from cache from the linked list to avoid lookups */
|
|
for(n = &mcc_head; n && *n; n = &(*n)->next) {
|
|
if(mfrom == *n) {
|
|
*n = mfrom->next;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* swap creds */
|
|
creds = mto->creds;
|
|
mto->creds = mfrom->creds;
|
|
mfrom->creds = creds;
|
|
/* swap principal */
|
|
principal = mto->primary_principal;
|
|
mto->primary_principal = mfrom->primary_principal;
|
|
mfrom->primary_principal = principal;
|
|
|
|
mto->mtime = mfrom->mtime = time(NULL);
|
|
|
|
HEIMDAL_MUTEX_unlock(&mcc_mutex);
|
|
mcc_destroy(context, from);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static krb5_error_code KRB5_CALLCONV
|
|
mcc_default_name(krb5_context context, char **str)
|
|
{
|
|
*str = strdup("MEMORY:");
|
|
if (*str == NULL) {
|
|
krb5_set_error_message(context, ENOMEM,
|
|
N_("malloc: out of memory", ""));
|
|
return ENOMEM;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static krb5_error_code KRB5_CALLCONV
|
|
mcc_lastchange(krb5_context context, krb5_ccache id, krb5_timestamp *mtime)
|
|
{
|
|
*mtime = MCACHE(id)->mtime;
|
|
return 0;
|
|
}
|
|
|
|
static krb5_error_code KRB5_CALLCONV
|
|
mcc_set_kdc_offset(krb5_context context, krb5_ccache id, krb5_deltat kdc_offset)
|
|
{
|
|
krb5_mcache *m = MCACHE(id);
|
|
m->kdc_offset = kdc_offset;
|
|
return 0;
|
|
}
|
|
|
|
static krb5_error_code KRB5_CALLCONV
|
|
mcc_get_kdc_offset(krb5_context context, krb5_ccache id, krb5_deltat *kdc_offset)
|
|
{
|
|
krb5_mcache *m = MCACHE(id);
|
|
*kdc_offset = m->kdc_offset;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* Variable containing the MEMORY based credential cache implemention.
|
|
*
|
|
* @ingroup krb5_ccache
|
|
*/
|
|
|
|
KRB5_LIB_VARIABLE const krb5_cc_ops krb5_mcc_ops = {
|
|
KRB5_CC_OPS_VERSION,
|
|
"MEMORY",
|
|
mcc_get_name,
|
|
mcc_resolve,
|
|
mcc_gen_new,
|
|
mcc_initialize,
|
|
mcc_destroy,
|
|
mcc_close,
|
|
mcc_store_cred,
|
|
NULL, /* mcc_retrieve */
|
|
mcc_get_principal,
|
|
mcc_get_first,
|
|
mcc_get_next,
|
|
mcc_end_get,
|
|
mcc_remove_cred,
|
|
mcc_set_flags,
|
|
NULL,
|
|
mcc_get_cache_first,
|
|
mcc_get_cache_next,
|
|
mcc_end_cache_get,
|
|
mcc_move,
|
|
mcc_default_name,
|
|
NULL,
|
|
mcc_lastchange,
|
|
mcc_set_kdc_offset,
|
|
mcc_get_kdc_offset
|
|
};
|