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/*
* 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;
typedef struct gss_client_params gss_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 *user = NULL;
HDB *db = 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, &db, &user);
krb5_free_principal(context, client);
if (ret)
goto failed;
ret = hdb_enctype2key(context, user, 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 ||
ct_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, db, 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;
}
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