351 lines
7.1 KiB
C
351 lines
7.1 KiB
C
/**
|
|
* FreeRDP: A Remote Desktop Protocol Client
|
|
* Kerberos Auth Protocol
|
|
*
|
|
* Copyright 2011 Samsung, Author Jiten Pathy
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef FREERDP_SSPI_KERBEROS_PRIVATE_H
|
|
#define FREERDP_SSPI_KERBEROS_PRIVATE_H
|
|
|
|
#ifndef _WIN32
|
|
#include <netinet/in.h>
|
|
#include <netdb.h>
|
|
#include <resolv.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/nameser.h>
|
|
#endif
|
|
|
|
#ifndef MSG_NOSIGNAL
|
|
#define MSG_NOSIGNAL 0
|
|
#endif
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <freerdp/types.h>
|
|
#include <freerdp/settings.h>
|
|
#include <freerdp/utils/stream.h>
|
|
#include <freerdp/utils/blob.h>
|
|
#include <freerdp/sspi/sspi.h>
|
|
|
|
#define MSKRB_OID "1.2.840.48018.1.2.2"
|
|
#define STDKRB_OID "1.2.840.113554.1.2.2"
|
|
|
|
#define SERVICE "_kerberos."
|
|
#define KRB_VERSION 5
|
|
#define KRB_SERVER "krbtgt/"
|
|
#define APP_SERVER "TERMSRV/"
|
|
|
|
#define KRB_NAME_PRINCIPAL 1
|
|
#define KRB_NAME_SERVICE 2
|
|
|
|
/* KRB TAGS */
|
|
#define KRB_TAG_ASREQ 10
|
|
#define KRB_TAG_ASREP 11
|
|
#define KRB_TAG_TGSREQ 12
|
|
#define KRB_TAG_TGSREP 13
|
|
#define KRB_TAG_APREQ 14
|
|
#define KRB_TAG_APREP 15
|
|
#define KRB_TAG_ERROR 30
|
|
#define KRB_TAG_U2UTGTREQ 16
|
|
#define KRB_TAG_U2UTGTREP 16
|
|
|
|
#define NAME_TYPE_PRINCIPAL 1
|
|
#define NAME_TYPE_SERVICE 2
|
|
|
|
/* KRB ERROR */
|
|
#define KDC_ERR_PREAUTH_FAILED 24
|
|
#define KDC_ERR_PREAUTH_REQ 25
|
|
#define KRB_AP_ERR_SKEW 37
|
|
#define KDC_ERR_C_PRINCIPAL_UNKNOWN 6
|
|
|
|
#define PA_ENCTYPE_INFO 11
|
|
#define PA_ENCTYPE_INFO2 19
|
|
|
|
/* ENCRYPTION TYPE */
|
|
#define ETYPE_DES_CBC_CRC 1
|
|
#define ETYPE_DES_CBC_MD5 3
|
|
#define ETYPE_AES128_CTS_HMAC 17
|
|
#define ETYPE_AES256_CTS_HMAC 18
|
|
#define ETYPE_RC4_HMAC 23
|
|
|
|
/* CHECKSUM TYPE */
|
|
#define KRB_CKSUM_HMAC_MD5 -138
|
|
|
|
/* AD TYPE */
|
|
#define AD_IF_RELEVANT 1
|
|
|
|
#define GETUINT16( _s, _p) do{ \
|
|
*(_p) = (uint8)(_s)[0] << 8 | (uint8)(_s)[1]; \
|
|
(_s) += 2; } while (0)
|
|
#define _GET_BYTE_LENGTH(_n) (((_n) > 0xFF) ? 3 :(((_n) > 0x7F) ? 2 : 1))
|
|
|
|
enum _KRBCTX_STATE
|
|
{
|
|
KRB_STATE_INITIAL,
|
|
KRB_FAILOVER_NTLM,
|
|
KRB_ASREQ_OK,
|
|
KRB_ASREP_OK,
|
|
KRB_ASREP_ERR,
|
|
KRB_TGSREQ_OK,
|
|
KRB_TGSREP_OK,
|
|
KRB_TGSREP_ERR,
|
|
KRB_U2UTGTREQ_OK,
|
|
KRB_U2UTGTREP_OK,
|
|
KRB_APREQ_OK,
|
|
KRB_APREP_OK,
|
|
KRB_PACKET_ERROR,
|
|
KRB_STATE_FINAL
|
|
};
|
|
typedef enum _KRBCTX_STATE KRBCTX_STATE;
|
|
|
|
struct _kdc_srv_entry
|
|
{
|
|
struct _kdc_srv_entry* next;
|
|
uint16 priority;
|
|
uint16 weight;
|
|
uint16 port;
|
|
char* kdchost;
|
|
};
|
|
typedef struct _kdc_srv_entry KDCENTRY;
|
|
|
|
struct _PA_DATA
|
|
{
|
|
int type;
|
|
rdpBlob value;
|
|
};
|
|
typedef struct _PA_DATA PAData;
|
|
|
|
struct _AUTH_DATA
|
|
{
|
|
int ad_type;
|
|
uint8* ad_data;
|
|
};
|
|
typedef struct _AUTH_DATA AuthData;
|
|
|
|
struct _Krb_ENCData
|
|
{
|
|
sint32 enctype;
|
|
int kvno;
|
|
rdpBlob encblob;
|
|
};
|
|
typedef struct _Krb_ENCData KrbENCData;
|
|
|
|
struct _Krb_ENCKey
|
|
{
|
|
sint32 enctype;
|
|
rdpBlob skey;
|
|
};
|
|
typedef struct _Krb_ENCKey KrbENCKey;
|
|
|
|
struct _ENC_KDC_REPPART
|
|
{
|
|
KrbENCKey key;
|
|
int nonce;
|
|
uint32 flags;
|
|
uint32 authtime;
|
|
uint32 endtime;
|
|
char *realm;
|
|
char *sname;
|
|
};
|
|
typedef struct _ENC_KDC_REPPART ENCKDCREPPart;
|
|
|
|
struct _Krb_Ticket
|
|
{
|
|
int tktvno;
|
|
char* realm;
|
|
char* sname;
|
|
KrbENCData enc_part;
|
|
};
|
|
typedef struct _Krb_Ticket Ticket;
|
|
|
|
struct _Krb_Authenticator
|
|
{
|
|
int avno;
|
|
char* crealm;
|
|
char* cname;
|
|
int cksumtype;
|
|
rdpBlob* cksum;
|
|
uint32 cusec;
|
|
char* ctime;
|
|
uint32 seqno;
|
|
AuthData auth_data;
|
|
};
|
|
typedef struct _Krb_Authenticator Authenticator;
|
|
|
|
struct _KDC_REQ_BODY
|
|
{
|
|
uint32 kdc_options;
|
|
char* cname;
|
|
char* realm;
|
|
char* sname;
|
|
char* from;
|
|
char* till;
|
|
char* rtime;
|
|
uint32 nonce;
|
|
};
|
|
typedef struct _KDC_REQ_BODY KDCReqBody;
|
|
|
|
struct _KRB_KDCREP
|
|
{
|
|
int pvno;
|
|
int type;
|
|
PAData** padata;
|
|
char* realm;
|
|
char* cname;
|
|
Ticket etgt;
|
|
KrbENCData enc_part;
|
|
};
|
|
typedef struct _KRB_KDCREP KrbKDCREP;
|
|
|
|
struct _KRB_AS_REQ
|
|
{
|
|
int pvno;
|
|
int type;
|
|
boolean pa_pac_request;
|
|
PAData** padata;
|
|
KDCReqBody req_body;
|
|
};
|
|
typedef struct _KRB_AS_REQ KrbASREQ;
|
|
|
|
struct _KRB_TGS_REQ
|
|
{
|
|
int pvno;
|
|
int type;
|
|
boolean pa_pac_request;
|
|
PAData** padata;
|
|
KDCReqBody req_body;
|
|
};
|
|
typedef struct _KRB_TGS_REQ KrbTGSREQ;
|
|
|
|
struct _KRB_APREQ
|
|
{
|
|
int pvno;
|
|
int type;
|
|
uint32 ap_options;
|
|
Ticket* ticket;
|
|
KrbENCData enc_auth;
|
|
};
|
|
typedef struct _KRB_APREQ KrbAPREQ;
|
|
|
|
struct _KRB_ERROR
|
|
{
|
|
int pvno;
|
|
int type;
|
|
int errcode;
|
|
char* stime;
|
|
uint32 susec;
|
|
char* realm;
|
|
char* sname;
|
|
rdpBlob edata;
|
|
};
|
|
typedef struct _KRB_ERROR KrbERROR;
|
|
|
|
struct _KRB_ASREP
|
|
{
|
|
KrbKDCREP kdc_rep;
|
|
};
|
|
typedef struct _KRB_ASREP KrbASREP;
|
|
|
|
struct _KRB_TGSREP
|
|
{
|
|
KrbKDCREP kdc_rep;
|
|
};
|
|
typedef struct _KRB_TGSREP KrbTGSREP;
|
|
|
|
struct _KRB_TGTREQ
|
|
{
|
|
int pvno;
|
|
int type;
|
|
char* sname;
|
|
char* realm;
|
|
};
|
|
typedef struct _KRB_TGTREQ KrbTGTREQ;
|
|
|
|
struct _KRB_TGTREP
|
|
{
|
|
int pvno;
|
|
int type;
|
|
Ticket ticket;
|
|
};
|
|
typedef struct _KRB_TGTREP KrbTGTREP;
|
|
|
|
struct _KRB_CONTEXT
|
|
{
|
|
UNICONV* uniconv;
|
|
rdpSettings* settings;
|
|
int ksockfd;
|
|
uint16 krbport;
|
|
char* krbhost;
|
|
char* cname;
|
|
char* realm;
|
|
char* sname;
|
|
char* hostname;
|
|
SEC_WINNT_AUTH_IDENTITY identity;
|
|
rdpBlob passwd;
|
|
sint32 enctype;
|
|
sint32 clockskew;
|
|
uint32 ctime;
|
|
uint32 nonce;
|
|
Ticket asticket;
|
|
KrbENCKey* askey;
|
|
Ticket tgsticket;
|
|
KrbENCKey* tgskey;
|
|
KRBCTX_STATE state;
|
|
CtxtHandle context;
|
|
};
|
|
typedef struct _KRB_CONTEXT KRB_CONTEXT;
|
|
|
|
CtxtHandle* krbctx_client_init(rdpSettings* settings, SEC_WINNT_AUTH_IDENTITY* identity);
|
|
|
|
boolean tcp_is_ipaddr(const char* hostname);
|
|
char* get_utc_time(time_t t);
|
|
time_t get_local_time(char* str);
|
|
uint32 get_clock_skew(char* str);
|
|
char* get_dns_queryname(char *host, char* protocol);
|
|
int krb_get_realm(rdpSettings* settings);
|
|
KDCENTRY* krb_locate_kdc(rdpSettings* settings);
|
|
|
|
int krb_tcp_connect(KRB_CONTEXT* krb_ctx, KDCENTRY* entry);
|
|
int krb_tcp_send(KRB_CONTEXT* krb_ctx, uint8* data, uint32 length);
|
|
int krb_tcp_recv(KRB_CONTEXT* krb_ctx, uint8* data, uint32 length);
|
|
|
|
void krb_asreq_send(KRB_CONTEXT* krb_ctx, uint8 errcode);
|
|
int krb_asrep_recv(KRB_CONTEXT* krb_ctx);
|
|
|
|
void krb_tgsreq_send(KRB_CONTEXT* krb_ctx, uint8 errcode);
|
|
int krb_tgsrep_recv(KRB_CONTEXT* krb_ctx);
|
|
|
|
int krb_verify_kdcrep(KRB_CONTEXT* krb_ctx, KrbKDCREP* kdc_rep, int msgtype);
|
|
void krb_save_ticket(KRB_CONTEXT* krb_ctx, KrbKDCREP* kdc_rep);
|
|
|
|
KrbASREQ* krb_asreq_new(KRB_CONTEXT* krb_ctx, uint8 errcode);
|
|
KrbTGSREQ* krb_tgsreq_new(KRB_CONTEXT* krb_Rss, uint8 errcode);
|
|
KrbAPREQ* krb_apreq_new(KRB_CONTEXT* krb_ctx, Ticket* ticket, Authenticator* krb_auth);
|
|
|
|
void krb_ContextFree(KRB_CONTEXT* krb_ctx);
|
|
void krb_free_ticket(Ticket* ticket);
|
|
void krb_free_padata(PAData** padata);
|
|
void krb_free_req_body(KDCReqBody* req_body);
|
|
void krb_free_kdcrep(KrbKDCREP* kdc_rep);
|
|
void krb_free_reppart(ENCKDCREPPart* reppart);
|
|
void krb_free_asreq(KrbASREQ* krb_asreq);
|
|
void krb_free_asrep(KrbASREP* krb_asrep);
|
|
void krb_free_tgsreq(KrbTGSREQ* krb_tgsreq);
|
|
void krb_free_tgsrep(KrbTGSREP* krb_tgsrep);
|
|
void krb_free_krb_error(KrbERROR* krb_err);
|
|
|
|
#endif /* FREERDP_SSPI_KERBEROS_PRIVATE_H */
|