7d353d0557
We refactor the code a bit to extend kdc_request_t which until now was only used for the AS. We make the structure extensible and start using it for the TGS as well. We leave digest and kx509 alone for the time being. We also define the concept of kv-pairs in our audit trail which allows us to define a rigorous but extensible format: type error from-addr client server key1=val1 key2=val2 ...
290 lines
7.4 KiB
C
290 lines
7.4 KiB
C
/*
|
|
* Copyright (c) 2006 - 2007 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.
|
|
*/
|
|
|
|
#define HC_DEPRECATED_CRYPTO
|
|
|
|
#include "headers.h"
|
|
#include <digest_asn1.h>
|
|
#include <heimntlm.h>
|
|
#include <heim-ipc.h>
|
|
#include <getarg.h>
|
|
|
|
typedef struct pk_client_params pk_client_params;
|
|
struct DigestREQ;
|
|
struct Kx509Request;
|
|
|
|
#include <kdc-private.h>
|
|
|
|
krb5_kdc_configuration *config;
|
|
|
|
static void
|
|
ntlm_service(void *ctx, const heim_idata *req,
|
|
const heim_icred cred,
|
|
heim_ipc_complete complete,
|
|
heim_sipc_call cctx)
|
|
{
|
|
NTLMRequest2 ntq;
|
|
unsigned char sessionkey[16];
|
|
heim_idata rep = { 0, NULL };
|
|
krb5_context context = ctx;
|
|
hdb_entry_ex *user = NULL;
|
|
Key *key = NULL;
|
|
NTLMReply ntp;
|
|
size_t size;
|
|
int ret;
|
|
const char *domain;
|
|
|
|
kdc_log(context, config, 4, "digest-request: uid=%d",
|
|
(int)heim_ipc_cred_get_uid(cred));
|
|
|
|
if (heim_ipc_cred_get_uid(cred) != 0) {
|
|
(*complete)(cctx, EPERM, NULL);
|
|
return;
|
|
}
|
|
|
|
ntp.success = 0;
|
|
ntp.flags = 0;
|
|
ntp.sessionkey = NULL;
|
|
|
|
ret = decode_NTLMRequest2(req->data, req->length, &ntq, NULL);
|
|
if (ret)
|
|
goto failed;
|
|
|
|
/* XXX forward to NetrLogonSamLogonEx() if not a local domain */
|
|
if (strcmp(ntq.loginDomainName, "BUILTIN") == 0) {
|
|
domain = ntq.loginDomainName;
|
|
} else if (strcmp(ntq.loginDomainName, "") == 0) {
|
|
domain = "BUILTIN";
|
|
} else {
|
|
ret = EINVAL;
|
|
goto failed;
|
|
}
|
|
|
|
kdc_log(context, config, 4, "digest-request: user=%s/%s",
|
|
ntq.loginUserName, domain);
|
|
|
|
if (ntq.lmchallenge.length != 8)
|
|
goto failed;
|
|
|
|
if (ntq.ntChallengeResponce.length == 0)
|
|
goto failed;
|
|
|
|
{
|
|
krb5_principal client;
|
|
|
|
ret = krb5_make_principal(context, &client, domain,
|
|
ntq.loginUserName, NULL);
|
|
if (ret)
|
|
goto failed;
|
|
|
|
krb5_principal_set_type(context, client, KRB5_NT_NTLM);
|
|
|
|
ret = _kdc_db_fetch(context, config, client,
|
|
HDB_F_GET_CLIENT, NULL, NULL, &user);
|
|
krb5_free_principal(context, client);
|
|
if (ret)
|
|
goto failed;
|
|
|
|
ret = hdb_enctype2key(context, &user->entry, NULL,
|
|
ETYPE_ARCFOUR_HMAC_MD5, &key);
|
|
if (ret) {
|
|
krb5_set_error_message(context, ret, "NTLM missing arcfour key");
|
|
goto failed;
|
|
}
|
|
}
|
|
|
|
kdc_log(context, config, 5,
|
|
"digest-request: found user, processing ntlm request");
|
|
|
|
if (ntq.ntChallengeResponce.length != 24) {
|
|
struct ntlm_buf infotarget, answer;
|
|
|
|
answer.length = ntq.ntChallengeResponce.length;
|
|
answer.data = ntq.ntChallengeResponce.data;
|
|
|
|
ret = heim_ntlm_verify_ntlm2(key->key.keyvalue.data,
|
|
key->key.keyvalue.length,
|
|
ntq.loginUserName,
|
|
ntq.loginDomainName,
|
|
0,
|
|
ntq.lmchallenge.data,
|
|
&answer,
|
|
&infotarget,
|
|
sessionkey);
|
|
if (ret) {
|
|
goto failed;
|
|
}
|
|
|
|
free(infotarget.data);
|
|
/* XXX verify info target */
|
|
|
|
} else {
|
|
struct ntlm_buf answer;
|
|
|
|
if (ntq.flags & NTLM_NEG_NTLM2_SESSION) {
|
|
unsigned char sessionhash[MD5_DIGEST_LENGTH];
|
|
EVP_MD_CTX *md5ctx;
|
|
|
|
/* the first first 8 bytes is the challenge, what is the other 16 bytes ? */
|
|
if (ntq.lmChallengeResponce.length != 24)
|
|
goto failed;
|
|
|
|
md5ctx = EVP_MD_CTX_create();
|
|
EVP_DigestInit_ex(md5ctx, EVP_md5(), NULL);
|
|
EVP_DigestUpdate(md5ctx, ntq.lmchallenge.data, 8);
|
|
EVP_DigestUpdate(md5ctx, ntq.lmChallengeResponce.data, 8);
|
|
EVP_DigestFinal_ex(md5ctx, sessionhash, NULL);
|
|
EVP_MD_CTX_destroy(md5ctx);
|
|
memcpy(ntq.lmchallenge.data, sessionhash, ntq.lmchallenge.length);
|
|
}
|
|
|
|
ret = heim_ntlm_calculate_ntlm1(key->key.keyvalue.data,
|
|
key->key.keyvalue.length,
|
|
ntq.lmchallenge.data, &answer);
|
|
if (ret)
|
|
goto failed;
|
|
|
|
if (ntq.ntChallengeResponce.length != answer.length ||
|
|
memcmp(ntq.ntChallengeResponce.data, answer.data, answer.length) != 0) {
|
|
free(answer.data);
|
|
ret = EINVAL;
|
|
goto failed;
|
|
}
|
|
free(answer.data);
|
|
|
|
{
|
|
EVP_MD_CTX *ctxp;
|
|
|
|
ctxp = EVP_MD_CTX_create();
|
|
EVP_DigestInit_ex(ctxp, EVP_md4(), NULL);
|
|
EVP_DigestUpdate(ctxp, key->key.keyvalue.data, key->key.keyvalue.length);
|
|
EVP_DigestFinal_ex(ctxp, sessionkey, NULL);
|
|
EVP_MD_CTX_destroy(ctxp);
|
|
}
|
|
}
|
|
|
|
ntp.success = 1;
|
|
|
|
ASN1_MALLOC_ENCODE(NTLMReply, rep.data, rep.length, &ntp, &size, ret);
|
|
if (ret)
|
|
goto failed;
|
|
if (rep.length != size)
|
|
abort();
|
|
|
|
failed:
|
|
kdc_log(context, config, 4, "digest-request: %d", ret);
|
|
|
|
(*complete)(cctx, ret, &rep);
|
|
|
|
free(rep.data);
|
|
|
|
free_NTLMRequest2(&ntq);
|
|
if (user)
|
|
_kdc_free_ent (context, user);
|
|
}
|
|
|
|
static int help_flag;
|
|
static int version_flag;
|
|
|
|
static struct getargs args[] = {
|
|
{ "help", 'h', arg_flag, &help_flag, NULL, NULL },
|
|
{ "version", 'v', arg_flag, &version_flag, NULL, NULL }
|
|
};
|
|
|
|
static int num_args = sizeof(args) / sizeof(args[0]);
|
|
|
|
static void
|
|
usage(int ret)
|
|
{
|
|
arg_printusage (args, num_args, NULL, "");
|
|
exit (ret);
|
|
}
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
krb5_context context;
|
|
int ret, optidx = 0;
|
|
|
|
setprogname(argv[0]);
|
|
|
|
if (getarg(args, num_args, argc, argv, &optidx))
|
|
usage(1);
|
|
|
|
if (help_flag)
|
|
usage(0);
|
|
|
|
if (version_flag) {
|
|
print_version(NULL);
|
|
exit(0);
|
|
}
|
|
|
|
ret = krb5_init_context(&context);
|
|
if (ret)
|
|
krb5_errx(context, 1, "krb5_init_context");
|
|
|
|
ret = krb5_kdc_get_config(context, &config);
|
|
if (ret)
|
|
krb5_err(context, 1, ret, "krb5_kdc_default_config");
|
|
|
|
kdc_openlog(context, "digest-service", config);
|
|
|
|
ret = krb5_kdc_set_dbinfo(context, config);
|
|
if (ret)
|
|
krb5_err(context, 1, ret, "krb5_kdc_set_dbinfo");
|
|
|
|
#if __APPLE__
|
|
{
|
|
heim_sipc mach;
|
|
heim_sipc_launchd_mach_init("org.h5l.ntlm-service",
|
|
ntlm_service, context, &mach);
|
|
heim_sipc_timeout(60);
|
|
}
|
|
#endif
|
|
#ifdef HAVE_DOOR_CREATE
|
|
{
|
|
heim_sipc door;
|
|
heim_sipc_service_door("org.h5l.ntlm-service", ntlm_service, NULL, &door);
|
|
}
|
|
#endif
|
|
{
|
|
heim_sipc un;
|
|
heim_sipc_service_unix("org.h5l.ntlm-service", ntlm_service, NULL, &un);
|
|
}
|
|
|
|
heim_ipc_main();
|
|
return 0;
|
|
}
|