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memset, memcpy, sizeof consistency fixes
[thirdparty/openssl.git] / ssl / kssl.c
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43fcc1b0 1/* ssl/kssl.c -*- mode: C; c-file-style: "eay" -*- */
0f113f3e
MC		 2/*
3 * Written by Vern Staats <staatsvr@asc.hpc.mil> for the OpenSSL project
4 * 2000.
43fcc1b0
RL		 5 */
6/* ====================================================================
7 * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
0f113f3e 14 * notice, this list of conditions and the following disclaimer.
43fcc1b0
RL		 15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
19 * distribution.
20 *
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 *
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
30 *
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
34 *
35 * 6. Redistributions of any form whatsoever must retain the following
36 * acknowledgment:
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
53 *
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com). This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
57 *
58 */
59
1d97c843
TH		 60/*-
61 * ssl/kssl.c -- Routines to support (& debug) Kerberos5 auth for openssl
62 *
0f113f3e
MC		 63 * 19990701 VRS Started.
64 * 200011?? Jeffrey Altman, Richard Levitte
65 * Generalized for Heimdal, Newer MIT, & Win32.
66 * Integrated into main OpenSSL 0.9.7 snapshots.
67 * 20010413 Simon Wilkinson, VRS
68 * Real RFC2712 KerberosWrapper replaces AP_REQ.
1d97c843 69 */
43fcc1b0 70
7bd51947 71#include <openssl/opensslconf.h>
116daf4c 72
7e998124 73#include <string.h>
2a1ef754 74
0f113f3e 75#define KRB5_PRIVATE 1
0858b71b 76
43fcc1b0 77#include <openssl/ssl.h>
2a1ef754
RL		 78#include <openssl/evp.h>
79#include <openssl/objects.h>
80#include <openssl/krb5_asn.h>
ef236ec3 81#include "kssl_lcl.h"
34fd7e68 82#include "ssl_locl.h"
43fcc1b0 83
116daf4c
RL		 84#ifndef OPENSSL_NO_KRB5
85
0f113f3e
MC		 86# ifndef ENOMEM
87# define ENOMEM KRB5KRB_ERR_GENERIC
88# endif
0858b71b 89
0f113f3e 90/*
f9b3bff6
RL		 91 * When OpenSSL is built on Windows, we do not want to require that
92 * the Kerberos DLLs be available in order for the OpenSSL DLLs to
93 * work. Therefore, all Kerberos routines are loaded at run time
94 * and we do not link to a .LIB file.
95 */
96
0f113f3e
MC		 97# if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32)
98/*
f9b3bff6
RL		 99 * The purpose of the following pre-processor statements is to provide
100 * compatibility with different releases of MIT Kerberos for Windows.
101 * All versions up to 1.2 used macros. But macros do not allow for
102 * a binary compatible interface for DLLs. Therefore, all macros are
103 * being replaced by function calls. The following code will allow
104 * an OpenSSL DLL built on Windows to work whether or not the macro
105 * or function form of the routines are utilized.
106 */
0f113f3e
MC		 107# ifdef krb5_cc_get_principal
108# define NO_DEF_KRB5_CCACHE
109# undef krb5_cc_get_principal
110# endif
111# define krb5_cc_get_principal kssl_krb5_cc_get_principal
112
113# define krb5_free_data_contents kssl_krb5_free_data_contents
114# define krb5_free_context kssl_krb5_free_context
115# define krb5_auth_con_free kssl_krb5_auth_con_free
116# define krb5_free_principal kssl_krb5_free_principal
117# define krb5_mk_req_extended kssl_krb5_mk_req_extended
118# define krb5_get_credentials kssl_krb5_get_credentials
119# define krb5_cc_default kssl_krb5_cc_default
120# define krb5_sname_to_principal kssl_krb5_sname_to_principal
121# define krb5_init_context kssl_krb5_init_context
122# define krb5_free_ticket kssl_krb5_free_ticket
123# define krb5_rd_req kssl_krb5_rd_req
124# define krb5_kt_default kssl_krb5_kt_default
125# define krb5_kt_resolve kssl_krb5_kt_resolve
47ff5c62 126/* macros in mit 1.2.2 and earlier; functions in mit 1.2.3 and greater */
0f113f3e
MC		 127# ifndef krb5_kt_close
128# define krb5_kt_close kssl_krb5_kt_close
129# endif /* krb5_kt_close */
130# ifndef krb5_kt_get_entry
131# define krb5_kt_get_entry kssl_krb5_kt_get_entry
132# endif /* krb5_kt_get_entry */
133# define krb5_auth_con_init kssl_krb5_auth_con_init
134
135# define krb5_principal_compare kssl_krb5_principal_compare
136# define krb5_decrypt_tkt_part kssl_krb5_decrypt_tkt_part
137# define krb5_timeofday kssl_krb5_timeofday
138# define krb5_rc_default kssl_krb5_rc_default
139
140# ifdef krb5_rc_initialize
141# undef krb5_rc_initialize
142# endif
143# define krb5_rc_initialize kssl_krb5_rc_initialize
144
145# ifdef krb5_rc_get_lifespan
146# undef krb5_rc_get_lifespan
147# endif
148# define krb5_rc_get_lifespan kssl_krb5_rc_get_lifespan
149
150# ifdef krb5_rc_destroy
151# undef krb5_rc_destroy
152# endif
153# define krb5_rc_destroy kssl_krb5_rc_destroy
154
155# define valid_cksumtype kssl_valid_cksumtype
156# define krb5_checksum_size kssl_krb5_checksum_size
157# define krb5_kt_free_entry kssl_krb5_kt_free_entry
158# define krb5_auth_con_setrcache kssl_krb5_auth_con_setrcache
159# define krb5_auth_con_getrcache kssl_krb5_auth_con_getrcache
160# define krb5_get_server_rcache kssl_krb5_get_server_rcache
2a1ef754 161
f9b3bff6
RL		 162/* Prototypes for built in stubs */
163void kssl_krb5_free_data_contents(krb5_context, krb5_data *);
0f113f3e 164void kssl_krb5_free_principal(krb5_context, krb5_principal);
f9b3bff6 165krb5_error_code kssl_krb5_kt_resolve(krb5_context,
0f113f3e
MC		 166 krb5_const char *, krb5_keytab *);
167krb5_error_code kssl_krb5_kt_default(krb5_context, krb5_keytab *);
f9b3bff6 168krb5_error_code kssl_krb5_free_ticket(krb5_context, krb5_ticket *);
0f113f3e 169krb5_error_code kssl_krb5_rd_req(krb5_context, krb5_auth_context *,
f9b3bff6 170 krb5_const krb5_data *,
0f113f3e
MC		 171 krb5_const_principal, krb5_keytab,
172 krb5_flags *, krb5_ticket **);
2a1ef754
RL		 173
174krb5_boolean kssl_krb5_principal_compare(krb5_context, krb5_const_principal,
175 krb5_const_principal);
f9b3bff6 176krb5_error_code kssl_krb5_mk_req_extended(krb5_context,
0f113f3e 177 krb5_auth_context *,
f9b3bff6 178 krb5_const krb5_flags,
0f113f3e
MC		 179 krb5_data *,
180 krb5_creds *, krb5_data *);
f9b3bff6
RL		 181krb5_error_code kssl_krb5_init_context(krb5_context *);
182void kssl_krb5_free_context(krb5_context);
0f113f3e 183krb5_error_code kssl_krb5_cc_default(krb5_context, krb5_ccache *);
f9b3bff6 184krb5_error_code kssl_krb5_sname_to_principal(krb5_context,
0f113f3e
MC		 185 krb5_const char *,
186 krb5_const char *,
187 krb5_int32, krb5_principal *);
f9b3bff6
RL		 188krb5_error_code kssl_krb5_get_credentials(krb5_context,
189 krb5_const krb5_flags,
190 krb5_ccache,
0f113f3e
MC		 191 krb5_creds *, krb5_creds * *);
192krb5_error_code kssl_krb5_auth_con_init(krb5_context, krb5_auth_context *);
193krb5_error_code kssl_krb5_cc_get_principal(krb5_context context,
f9b3bff6
RL		 194 krb5_ccache cache,
195 krb5_principal *principal);
0f113f3e
MC		 196krb5_error_code kssl_krb5_auth_con_free(krb5_context, krb5_auth_context);
197size_t kssl_krb5_checksum_size(krb5_context context, krb5_cksumtype ctype);
8de83bf8 198krb5_boolean kssl_valid_cksumtype(krb5_cksumtype ctype);
0f113f3e
MC		 199krb5_error_code krb5_kt_free_entry(krb5_context, krb5_keytab_entry FAR *);
200krb5_error_code kssl_krb5_auth_con_setrcache(krb5_context,
201 krb5_auth_context, krb5_rcache);
202krb5_error_code kssl_krb5_get_server_rcache(krb5_context,
a5224c34
RL		 203 krb5_const krb5_data *,
204 krb5_rcache *);
0f113f3e 205krb5_error_code kssl_krb5_auth_con_getrcache(krb5_context,
a5224c34
RL		 206 krb5_auth_context,
207 krb5_rcache *);
f9b3bff6
RL		 208
209/* Function pointers (almost all Kerberos functions are _stdcall) */
0f113f3e
MC		 210static void (_stdcall *p_krb5_free_data_contents) (krb5_context, krb5_data *)
211 = NULL;
212static void (_stdcall *p_krb5_free_principal) (krb5_context, krb5_principal)
213 = NULL;
2a1ef754 214static krb5_error_code(_stdcall *p_krb5_kt_resolve)
0f113f3e
MC		 215 (krb5_context, krb5_const char *, krb5_keytab *) = NULL;
216static krb5_error_code(_stdcall *p_krb5_kt_default) (krb5_context,
217 krb5_keytab *) = NULL;
218static krb5_error_code(_stdcall *p_krb5_free_ticket) (krb5_context,
219 krb5_ticket *) = NULL;
220static krb5_error_code(_stdcall *p_krb5_rd_req) (krb5_context,
221 krb5_auth_context *,
f9b3bff6 222 krb5_const krb5_data *,
0f113f3e 223 krb5_const_principal,
f9b3bff6 224 krb5_keytab, krb5_flags *,
0f113f3e
MC		 225 krb5_ticket **) = NULL;
226static krb5_error_code(_stdcall *p_krb5_mk_req_extended)
227 (krb5_context, krb5_auth_context *,
228 krb5_const krb5_flags, krb5_data *, krb5_creds *, krb5_data *) = NULL;
229static krb5_error_code(_stdcall *p_krb5_init_context) (krb5_context *) = NULL;
230static void (_stdcall *p_krb5_free_context) (krb5_context) = NULL;
231static krb5_error_code(_stdcall *p_krb5_cc_default) (krb5_context,
232 krb5_ccache *) = NULL;
233static krb5_error_code(_stdcall *p_krb5_sname_to_principal)
234 (krb5_context, krb5_const char *, krb5_const char *,
235 krb5_int32, krb5_principal *) = NULL;
236static krb5_error_code(_stdcall *p_krb5_get_credentials)
237 (krb5_context, krb5_const krb5_flags, krb5_ccache,
238 krb5_creds *, krb5_creds **) = NULL;
239static krb5_error_code(_stdcall *p_krb5_auth_con_init)
240 (krb5_context, krb5_auth_context *) = NULL;
241static krb5_error_code(_stdcall *p_krb5_cc_get_principal)
242 (krb5_context context, krb5_ccache cache, krb5_principal *principal) = NULL;
243static krb5_error_code(_stdcall *p_krb5_auth_con_free)
244 (krb5_context, krb5_auth_context) = NULL;
245static krb5_error_code(_stdcall *p_krb5_decrypt_tkt_part)
246 (krb5_context, krb5_const krb5_keyblock *, krb5_ticket *) = NULL;
247static krb5_error_code(_stdcall *p_krb5_timeofday)
248 (krb5_context context, krb5_int32 *timeret) = NULL;
249static krb5_error_code(_stdcall *p_krb5_rc_default)
250 (krb5_context context, krb5_rcache *rc) = NULL;
251static krb5_error_code(_stdcall *p_krb5_rc_initialize)
252 (krb5_context context, krb5_rcache rc, krb5_deltat lifespan) = NULL;
253static krb5_error_code(_stdcall *p_krb5_rc_get_lifespan)
254 (krb5_context context, krb5_rcache rc, krb5_deltat *lifespan) = NULL;
255static krb5_error_code(_stdcall *p_krb5_rc_destroy)
256 (krb5_context context, krb5_rcache rc) = NULL;
257static krb5_boolean(_stdcall *p_krb5_principal_compare)
258 (krb5_context, krb5_const_principal, krb5_const_principal) = NULL;
259static size_t (_stdcall *p_krb5_checksum_size) (krb5_context context,
260 krb5_cksumtype ctype) = NULL;
261static krb5_boolean(_stdcall *p_valid_cksumtype) (krb5_cksumtype ctype) =
262 NULL;
263static krb5_error_code(_stdcall *p_krb5_kt_free_entry)
264 (krb5_context, krb5_keytab_entry *) = NULL;
265static krb5_error_code(_stdcall *p_krb5_auth_con_setrcache) (krb5_context,
266 krb5_auth_context,
267 krb5_rcache) =
268 NULL;
269static krb5_error_code(_stdcall *p_krb5_get_server_rcache) (krb5_context,
270 krb5_const
271 krb5_data *,
272 krb5_rcache *) =
273 NULL;
274static krb5_error_code(*p_krb5_auth_con_getrcache) (krb5_context,
275 krb5_auth_context,
276 krb5_rcache *) = NULL;
277static krb5_error_code(_stdcall *p_krb5_kt_close) (krb5_context context,
278 krb5_keytab keytab) = NULL;
279static krb5_error_code(_stdcall *p_krb5_kt_get_entry) (krb5_context context,
280 krb5_keytab keytab,
281 krb5_const_principal
282 principal,
283 krb5_kvno vno,
284 krb5_enctype enctype,
285 krb5_keytab_entry
286 *entry) = NULL;
f9b3bff6
RL		 287static int krb5_loaded = 0; /* only attempt to initialize func ptrs once */
288
289/* Function to Load the Kerberos 5 DLL and initialize function pointers */
0f113f3e
MC		 290void load_krb5_dll(void)
291{
292 HANDLE hKRB5_32;
293
294 krb5_loaded++;
295 hKRB5_32 = LoadLibrary(TEXT("KRB5_32"));
296 if (!hKRB5_32)
297 return;
298
299 (FARPROC) p_krb5_free_data_contents =
300 GetProcAddress(hKRB5_32, "krb5_free_data_contents");
301 (FARPROC) p_krb5_free_context =
302 GetProcAddress(hKRB5_32, "krb5_free_context");
303 (FARPROC) p_krb5_auth_con_free =
304 GetProcAddress(hKRB5_32, "krb5_auth_con_free");
305 (FARPROC) p_krb5_free_principal =
306 GetProcAddress(hKRB5_32, "krb5_free_principal");
307 (FARPROC) p_krb5_mk_req_extended =
308 GetProcAddress(hKRB5_32, "krb5_mk_req_extended");
309 (FARPROC) p_krb5_get_credentials =
310 GetProcAddress(hKRB5_32, "krb5_get_credentials");
311 (FARPROC) p_krb5_cc_get_principal =
312 GetProcAddress(hKRB5_32, "krb5_cc_get_principal");
313 (FARPROC) p_krb5_cc_default = GetProcAddress(hKRB5_32, "krb5_cc_default");
314 (FARPROC) p_krb5_sname_to_principal =
315 GetProcAddress(hKRB5_32, "krb5_sname_to_principal");
316 (FARPROC) p_krb5_init_context =
317 GetProcAddress(hKRB5_32, "krb5_init_context");
318 (FARPROC) p_krb5_free_ticket =
319 GetProcAddress(hKRB5_32, "krb5_free_ticket");
320 (FARPROC) p_krb5_rd_req = GetProcAddress(hKRB5_32, "krb5_rd_req");
321 (FARPROC) p_krb5_principal_compare =
322 GetProcAddress(hKRB5_32, "krb5_principal_compare");
323 (FARPROC) p_krb5_decrypt_tkt_part =
324 GetProcAddress(hKRB5_32, "krb5_decrypt_tkt_part");
325 (FARPROC) p_krb5_timeofday = GetProcAddress(hKRB5_32, "krb5_timeofday");
326 (FARPROC) p_krb5_rc_default = GetProcAddress(hKRB5_32, "krb5_rc_default");
327 (FARPROC) p_krb5_rc_initialize =
328 GetProcAddress(hKRB5_32, "krb5_rc_initialize");
329 (FARPROC) p_krb5_rc_get_lifespan =
330 GetProcAddress(hKRB5_32, "krb5_rc_get_lifespan");
331 (FARPROC) p_krb5_rc_destroy = GetProcAddress(hKRB5_32, "krb5_rc_destroy");
332 (FARPROC) p_krb5_kt_default = GetProcAddress(hKRB5_32, "krb5_kt_default");
333 (FARPROC) p_krb5_kt_resolve = GetProcAddress(hKRB5_32, "krb5_kt_resolve");
334 (FARPROC) p_krb5_auth_con_init =
335 GetProcAddress(hKRB5_32, "krb5_auth_con_init");
336 (FARPROC) p_valid_cksumtype = GetProcAddress(hKRB5_32, "valid_cksumtype");
337 (FARPROC) p_krb5_checksum_size =
338 GetProcAddress(hKRB5_32, "krb5_checksum_size");
339 (FARPROC) p_krb5_kt_free_entry =
340 GetProcAddress(hKRB5_32, "krb5_kt_free_entry");
341 (FARPROC) p_krb5_auth_con_setrcache =
342 GetProcAddress(hKRB5_32, "krb5_auth_con_setrcache");
343 (FARPROC) p_krb5_get_server_rcache =
344 GetProcAddress(hKRB5_32, "krb5_get_server_rcache");
345 (FARPROC) p_krb5_auth_con_getrcache =
346 GetProcAddress(hKRB5_32, "krb5_auth_con_getrcache");
347 (FARPROC) p_krb5_kt_close = GetProcAddress(hKRB5_32, "krb5_kt_close");
348 (FARPROC) p_krb5_kt_get_entry =
349 GetProcAddress(hKRB5_32, "krb5_kt_get_entry");
350}
f9b3bff6
RL		 351
352/* Stubs for each function to be dynamicly loaded */
0f113f3e
MC		 353void kssl_krb5_free_data_contents(krb5_context CO, krb5_data *data)
354{
355 if (!krb5_loaded)
356 load_krb5_dll();
f9b3bff6 357
0f113f3e
MC		 358 if (p_krb5_free_data_contents)
359 p_krb5_free_data_contents(CO, data);
360}
f9b3bff6
RL		 361
362krb5_error_code
0f113f3e
MC		 363kssl_krb5_mk_req_extended(krb5_context CO,
364 krb5_auth_context *pACO,
f9b3bff6 365 krb5_const krb5_flags F,
0f113f3e
MC		 366 krb5_data *pD1, krb5_creds *pC, krb5_data *pD2)
367{
368 if (!krb5_loaded)
369 load_krb5_dll();
370
371 if (p_krb5_mk_req_extended)
372 return (p_krb5_mk_req_extended(CO, pACO, F, pD1, pC, pD2));
373 else
374 return KRB5KRB_ERR_GENERIC;
375}
376
f9b3bff6 377krb5_error_code
0f113f3e
MC		 378kssl_krb5_auth_con_init(krb5_context CO, krb5_auth_context *pACO)
379{
380 if (!krb5_loaded)
381 load_krb5_dll();
382
383 if (p_krb5_auth_con_init)
384 return (p_krb5_auth_con_init(CO, pACO));
385 else
386 return KRB5KRB_ERR_GENERIC;
387}
388
f9b3bff6 389krb5_error_code
0f113f3e
MC		 390kssl_krb5_auth_con_free(krb5_context CO, krb5_auth_context ACO)
391{
392 if (!krb5_loaded)
393 load_krb5_dll();
394
395 if (p_krb5_auth_con_free)
396 return (p_krb5_auth_con_free(CO, ACO));
397 else
398 return KRB5KRB_ERR_GENERIC;
399}
400
f9b3bff6
RL		 401krb5_error_code
402kssl_krb5_get_credentials(krb5_context CO,
0f113f3e
MC		 403 krb5_const krb5_flags F,
404 krb5_ccache CC, krb5_creds *pCR, krb5_creds **ppCR)
405{
406 if (!krb5_loaded)
407 load_krb5_dll();
408
409 if (p_krb5_get_credentials)
410 return (p_krb5_get_credentials(CO, F, CC, pCR, ppCR));
411 else
412 return KRB5KRB_ERR_GENERIC;
413}
414
f9b3bff6
RL		 415krb5_error_code
416kssl_krb5_sname_to_principal(krb5_context CO,
0f113f3e
MC		 417 krb5_const char *pC1,
418 krb5_const char *pC2,
419 krb5_int32 I, krb5_principal *pPR)
420{
421 if (!krb5_loaded)
422 load_krb5_dll();
f9b3bff6 423
0f113f3e
MC		 424 if (p_krb5_sname_to_principal)
425 return (p_krb5_sname_to_principal(CO, pC1, pC2, I, pPR));
426 else
427 return KRB5KRB_ERR_GENERIC;
428}
f9b3bff6 429
0f113f3e
MC		 430krb5_error_code kssl_krb5_cc_default(krb5_context CO, krb5_ccache *pCC)
431{
432 if (!krb5_loaded)
433 load_krb5_dll();
f9b3bff6 434
0f113f3e
MC		 435 if (p_krb5_cc_default)
436 return (p_krb5_cc_default(CO, pCC));
437 else
438 return KRB5KRB_ERR_GENERIC;
439}
f9b3bff6 440
0f113f3e
MC		 441krb5_error_code kssl_krb5_init_context(krb5_context *pCO)
442{
443 if (!krb5_loaded)
444 load_krb5_dll();
445
446 if (p_krb5_init_context)
447 return (p_krb5_init_context(pCO));
448 else
449 return KRB5KRB_ERR_GENERIC;
450}
451
452void kssl_krb5_free_context(krb5_context CO)
453{
454 if (!krb5_loaded)
455 load_krb5_dll();
456
457 if (p_krb5_free_context)
458 p_krb5_free_context(CO);
459}
460
461void kssl_krb5_free_principal(krb5_context c, krb5_principal p)
462{
463 if (!krb5_loaded)
464 load_krb5_dll();
465
466 if (p_krb5_free_principal)
467 p_krb5_free_principal(c, p);
468}
f9b3bff6
RL		 469
470krb5_error_code
0f113f3e
MC		 471kssl_krb5_kt_resolve(krb5_context con, krb5_const char *sz, krb5_keytab *kt)
472{
473 if (!krb5_loaded)
474 load_krb5_dll();
475
476 if (p_krb5_kt_resolve)
477 return (p_krb5_kt_resolve(con, sz, kt));
478 else
479 return KRB5KRB_ERR_GENERIC;
480}
481
482krb5_error_code kssl_krb5_kt_default(krb5_context con, krb5_keytab *kt)
483{
484 if (!krb5_loaded)
485 load_krb5_dll();
486
487 if (p_krb5_kt_default)
488 return (p_krb5_kt_default(con, kt));
489 else
490 return KRB5KRB_ERR_GENERIC;
491}
492
493krb5_error_code kssl_krb5_free_ticket(krb5_context con, krb5_ticket *kt)
494{
495 if (!krb5_loaded)
496 load_krb5_dll();
497
498 if (p_krb5_free_ticket)
499 return (p_krb5_free_ticket(con, kt));
500 else
501 return KRB5KRB_ERR_GENERIC;
502}
f9b3bff6
RL		 503
504krb5_error_code
0f113f3e
MC		 505kssl_krb5_rd_req(krb5_context con, krb5_auth_context *pacon,
506 krb5_const krb5_data *data,
507 krb5_const_principal princ, krb5_keytab keytab,
508 krb5_flags *flags, krb5_ticket **pptkt)
509{
510 if (!krb5_loaded)
511 load_krb5_dll();
512
513 if (p_krb5_rd_req)
514 return (p_krb5_rd_req(con, pacon, data, princ, keytab, flags, pptkt));
515 else
516 return KRB5KRB_ERR_GENERIC;
517}
f9b3bff6 518
2a1ef754
RL		 519krb5_boolean
520krb5_principal_compare(krb5_context con, krb5_const_principal princ1,
0f113f3e
MC		 521 krb5_const_principal princ2)
522{
523 if (!krb5_loaded)
524 load_krb5_dll();
2a1ef754 525
0f113f3e
MC		 526 if (p_krb5_principal_compare)
527 return (p_krb5_principal_compare(con, princ1, princ2));
528 else
529 return KRB5KRB_ERR_GENERIC;
530}
2a1ef754
RL		 531
532krb5_error_code
533krb5_decrypt_tkt_part(krb5_context con, krb5_const krb5_keyblock *keys,
0f113f3e
MC		 534 krb5_ticket *ticket)
535{
536 if (!krb5_loaded)
537 load_krb5_dll();
2a1ef754 538
0f113f3e
MC		 539 if (p_krb5_decrypt_tkt_part)
540 return (p_krb5_decrypt_tkt_part(con, keys, ticket));
541 else
542 return KRB5KRB_ERR_GENERIC;
543}
2a1ef754 544
0f113f3e
MC		 545krb5_error_code krb5_timeofday(krb5_context con, krb5_int32 *timeret)
546{
547 if (!krb5_loaded)
548 load_krb5_dll();
2a1ef754 549
0f113f3e
MC		 550 if (p_krb5_timeofday)
551 return (p_krb5_timeofday(con, timeret));
552 else
553 return KRB5KRB_ERR_GENERIC;
554}
2a1ef754 555
0f113f3e
MC		 556krb5_error_code krb5_rc_default(krb5_context con, krb5_rcache *rc)
557{
558 if (!krb5_loaded)
559 load_krb5_dll();
2a1ef754 560
0f113f3e
MC		 561 if (p_krb5_rc_default)
562 return (p_krb5_rc_default(con, rc));
563 else
564 return KRB5KRB_ERR_GENERIC;
565}
2a1ef754
RL		 566
567krb5_error_code
568krb5_rc_initialize(krb5_context con, krb5_rcache rc, krb5_deltat lifespan)
0f113f3e
MC		 569{
570 if (!krb5_loaded)
571 load_krb5_dll();
2a1ef754 572
0f113f3e
MC		 573 if (p_krb5_rc_initialize)
574 return (p_krb5_rc_initialize(con, rc, lifespan));
575 else
576 return KRB5KRB_ERR_GENERIC;
577}
2a1ef754
RL		 578
579krb5_error_code
580krb5_rc_get_lifespan(krb5_context con, krb5_rcache rc, krb5_deltat *lifespanp)
0f113f3e
MC		 581{
582 if (!krb5_loaded)
583 load_krb5_dll();
2a1ef754 584
0f113f3e
MC		 585 if (p_krb5_rc_get_lifespan)
586 return (p_krb5_rc_get_lifespan(con, rc, lifespanp));
587 else
588 return KRB5KRB_ERR_GENERIC;
589}
2a1ef754 590
0f113f3e
MC		 591krb5_error_code krb5_rc_destroy(krb5_context con, krb5_rcache rc)
592{
593 if (!krb5_loaded)
594 load_krb5_dll();
8de83bf8 595
0f113f3e
MC		 596 if (p_krb5_rc_destroy)
597 return (p_krb5_rc_destroy(con, rc));
598 else
599 return KRB5KRB_ERR_GENERIC;
600}
8de83bf8 601
0f113f3e
MC		 602size_t krb5_checksum_size(krb5_context context, krb5_cksumtype ctype)
603{
604 if (!krb5_loaded)
605 load_krb5_dll();
8de83bf8 606
0f113f3e
MC		 607 if (p_krb5_checksum_size)
608 return (p_krb5_checksum_size(context, ctype));
609 else
610 return KRB5KRB_ERR_GENERIC;
611}
8de83bf8 612
0f113f3e
MC		 613krb5_boolean valid_cksumtype(krb5_cksumtype ctype)
614{
615 if (!krb5_loaded)
616 load_krb5_dll();
617
618 if (p_valid_cksumtype)
619 return (p_valid_cksumtype(ctype));
620 else
621 return KRB5KRB_ERR_GENERIC;
622}
623
624krb5_error_code krb5_kt_free_entry(krb5_context con, krb5_keytab_entry *entry)
625{
626 if (!krb5_loaded)
627 load_krb5_dll();
628
629 if (p_krb5_kt_free_entry)
630 return (p_krb5_kt_free_entry(con, entry));
631 else
632 return KRB5KRB_ERR_GENERIC;
633}
8de83bf8 634
f9b3bff6 635/* Structure definitions */
0f113f3e
MC		 636# ifndef NO_DEF_KRB5_CCACHE
637# ifndef krb5_x
638# define krb5_x(ptr,args) ((ptr)?((*(ptr)) args):(abort(),1))
639# define krb5_xc(ptr,args) ((ptr)?((*(ptr)) args):(abort(),(char*)0))
640# endif
641
642typedef krb5_pointer krb5_cc_cursor; /* cursor for sequential lookup */
643
644typedef struct _krb5_ccache {
645 krb5_magic magic;
646 struct _krb5_cc_ops FAR *ops;
647 krb5_pointer data;
648} *krb5_ccache;
649
650typedef struct _krb5_cc_ops {
651 krb5_magic magic;
652 char *prefix;
653 char *(KRB5_CALLCONV *get_name)
654 (krb5_context, krb5_ccache);
655 krb5_error_code(KRB5_CALLCONV *resolve)
656 (krb5_context, krb5_ccache *, const char *);
657 krb5_error_code(KRB5_CALLCONV *gen_new)
658 (krb5_context, krb5_ccache *);
659 krb5_error_code(KRB5_CALLCONV *init)
660 (krb5_context, krb5_ccache, krb5_principal);
661 krb5_error_code(KRB5_CALLCONV *destroy)
662 (krb5_context, krb5_ccache);
663 krb5_error_code(KRB5_CALLCONV *close)
664 (krb5_context, krb5_ccache);
665 krb5_error_code(KRB5_CALLCONV *store)
666 (krb5_context, krb5_ccache, krb5_creds *);
667 krb5_error_code(KRB5_CALLCONV *retrieve)
668 (krb5_context, krb5_ccache, krb5_flags, krb5_creds *, krb5_creds *);
669 krb5_error_code(KRB5_CALLCONV *get_princ)
670 (krb5_context, krb5_ccache, krb5_principal *);
671 krb5_error_code(KRB5_CALLCONV *get_first)
672 (krb5_context, krb5_ccache, krb5_cc_cursor *);
673 krb5_error_code(KRB5_CALLCONV *get_next)
674 (krb5_context, krb5_ccache, krb5_cc_cursor *, krb5_creds *);
675 krb5_error_code(KRB5_CALLCONV *end_get)
676 (krb5_context, krb5_ccache, krb5_cc_cursor *);
677 krb5_error_code(KRB5_CALLCONV *remove_cred)
678 (krb5_context, krb5_ccache, krb5_flags, krb5_creds *);
679 krb5_error_code(KRB5_CALLCONV *set_flags)
680 (krb5_context, krb5_ccache, krb5_flags);
681} krb5_cc_ops;
682# endif /* NO_DEF_KRB5_CCACHE */
683
684krb5_error_code
685 kssl_krb5_cc_get_principal
686 (krb5_context context, krb5_ccache cache, krb5_principal *principal) {
687 if (p_krb5_cc_get_principal)
688 return (p_krb5_cc_get_principal(context, cache, principal));
689 else
690 return (krb5_x((cache)->ops->get_princ, (context, cache, principal)));
691}
a5224c34
RL		 692
693krb5_error_code
694kssl_krb5_auth_con_setrcache(krb5_context con, krb5_auth_context acon,
695 krb5_rcache rcache)
0f113f3e
MC		 696{
697 if (p_krb5_auth_con_setrcache)
698 return (p_krb5_auth_con_setrcache(con, acon, rcache));
699 else
700 return KRB5KRB_ERR_GENERIC;
701}
a5224c34
RL		 702
703krb5_error_code
0f113f3e
MC		 704kssl_krb5_get_server_rcache(krb5_context con, krb5_const krb5_data *data,
705 krb5_rcache *rcache)
706{
707 if (p_krb5_get_server_rcache)
708 return (p_krb5_get_server_rcache(con, data, rcache));
709 else
710 return KRB5KRB_ERR_GENERIC;
711}
a5224c34
RL		 712
713krb5_error_code
714kssl_krb5_auth_con_getrcache(krb5_context con, krb5_auth_context acon,
0f113f3e
MC		 715 krb5_rcache *prcache)
716{
717 if (p_krb5_auth_con_getrcache)
718 return (p_krb5_auth_con_getrcache(con, acon, prcache));
719 else
720 return KRB5KRB_ERR_GENERIC;
721}
722
723krb5_error_code kssl_krb5_kt_close(krb5_context context, krb5_keytab keytab)
724{
725 if (p_krb5_kt_close)
726 return (p_krb5_kt_close(context, keytab));
727 else
728 return KRB5KRB_ERR_GENERIC;
729}
47ff5c62
BM		 730
731krb5_error_code
732kssl_krb5_kt_get_entry(krb5_context context, krb5_keytab keytab,
733 krb5_const_principal principal, krb5_kvno vno,
734 krb5_enctype enctype, krb5_keytab_entry *entry)
15780a1e 735{
0f113f3e
MC		 736 if (p_krb5_kt_get_entry)
737 return (p_krb5_kt_get_entry
738 (context, keytab, principal, vno, enctype, entry));
739 else
740 return KRB5KRB_ERR_GENERIC;
15780a1e 741}
0f113f3e
MC		 742# endif /* OPENSSL_SYS_WINDOWS || OPENSSL_SYS_WIN32 */
743
744/*
745 * memory allocation functions for non-temporary storage (e.g. stuff that
746 * gets saved into the kssl context)
747 */
748static void *kssl_calloc(size_t nmemb, size_t size)
749{
750 void *p;
15780a1e 751
0f113f3e
MC		 752 p = OPENSSL_malloc(nmemb * size);
753 if (p) {
754 memset(p, 0, nmemb * size);
755 }
756 return p;
757}
15780a1e 758
0f113f3e
MC		 759# define kssl_malloc(size) OPENSSL_malloc((size))
760# define kssl_realloc(ptr, size) OPENSSL_realloc(ptr, size)
761# define kssl_free(ptr) OPENSSL_free((ptr))
15780a1e 762
43fcc1b0
RL		 763char
764*kstring(char *string)
0f113f3e
MC		 765{
766 static char *null = "[NULL]";
43fcc1b0 767
0f113f3e
MC		 768 return ((string == NULL) ? null : string);
769}
43fcc1b0 770
0f113f3e
MC		 771/*
772 * Given KRB5 enctype (basically DES or 3DES), return closest match openssl
773 * EVP_ encryption algorithm. Return NULL for unknown or problematic
774 * (krb5_dk_encrypt) enctypes. Assume ENCTYPE_*_RAW (krb5_raw_encrypt) are
775 * OK.
1d97c843 776 */
0f113f3e
MC		 777const EVP_CIPHER *kssl_map_enc(krb5_enctype enctype)
778{
779 switch (enctype) {
780 case ENCTYPE_DES_HMAC_SHA1: /* EVP_des_cbc(); */
781 case ENCTYPE_DES_CBC_CRC:
782 case ENCTYPE_DES_CBC_MD4:
783 case ENCTYPE_DES_CBC_MD5:
784 case ENCTYPE_DES_CBC_RAW:
785 return EVP_des_cbc();
786 break;
787 case ENCTYPE_DES3_CBC_SHA1: /* EVP_des_ede3_cbc(); */
788 case ENCTYPE_DES3_CBC_SHA:
789 case ENCTYPE_DES3_CBC_RAW:
790 return EVP_des_ede3_cbc();
791 break;
792 default:
793 return NULL;
794 break;
795 }
796}
797
798/*
799 * Return true:1 if p "looks like" the start of the real authenticator
800 * described in kssl_skip_confound() below. The ASN.1 pattern is "62 xx 30
801 * yy" (APPLICATION-2, SEQUENCE), where xx-yy =~ 2, and xx and yy are
802 * possibly multi-byte length fields.
1d97c843 803 */
0f113f3e
MC		 804static int kssl_test_confound(unsigned char *p)
805{
806 int len = 2;
807 int xx = 0, yy = 0;
808
809 if (*p++ != 0x62)
810 return 0;
811 if (*p > 0x82)
812 return 0;
813 switch (*p) {
814 case 0x82:
815 p++;
816 xx = (*p++ << 8);
817 xx += *p++;
818 break;
819 case 0x81:
820 p++;
821 xx = *p++;
822 break;
823 case 0x80:
824 return 0;
825 default:
826 xx = *p++;
827 break;
828 }
829 if (*p++ != 0x30)
830 return 0;
831 if (*p > 0x82)
832 return 0;
833 switch (*p) {
834 case 0x82:
835 p++;
836 len += 2;
837 yy = (*p++ << 8);
838 yy += *p++;
839 break;
840 case 0x81:
841 p++;
842 len++;
843 yy = *p++;
844 break;
845 case 0x80:
846 return 0;
847 default:
848 yy = *p++;
849 break;
850 }
851
852 return (xx - len == yy) ? 1 : 0;
853}
854
855/*
856 * Allocate, fill, and return cksumlens array of checksum lengths. This
857 * array holds just the unique elements from the krb5_cksumarray[]. array[n]
858 * == 0 signals end of data. The krb5_cksumarray[] was an internal variable
859 * that has since been replaced by a more general method for storing the
860 * data. It should not be used. Instead we use real API calls and make a
861 * guess for what the highest assigned CKSUMTYPE_ constant is. As of 1.2.2
862 * it is 0x000c (CKSUMTYPE_HMAC_SHA1_DES3). So we will use 0x0010.
1d97c843 863 */
0f113f3e
MC		 864static size_t *populate_cksumlens(void)
865{
866 int i, j, n;
867 static size_t *cklens = NULL;
868
869# ifdef KRB5_MIT_OLD11
870 n = krb5_max_cksum;
871# else
872 n = 0x0010;
873# endif /* KRB5_MIT_OLD11 */
874
875# ifdef KRB5CHECKAUTH
876 if (!cklens && !(cklens = (size_t *)calloc(sizeof(int), n + 1)))
877 return NULL;
878
879 for (i = 0; i < n; i++) {
880 if (!valid_cksumtype(i))
881 continue; /* array has holes */
882 for (j = 0; j < n; j++) {
883 if (cklens[j] == 0) {
884 cklens[j] = krb5_checksum_size(NULL, i);
885 break; /* krb5 elem was new: add */
886 }
887 if (cklens[j] == krb5_checksum_size(NULL, i)) {
888 break; /* ignore duplicate elements */
889 }
890 }
891 }
892# endif /* KRB5CHECKAUTH */
893
894 return cklens;
895}
2a1ef754 896
3a83462d 897/*-
0f113f3e
MC		 898 * Return pointer to start of real authenticator within authenticator, or
899 * return NULL on error.
900 * Decrypted authenticator looks like this:
901 * [0 or 8 byte confounder] [4-24 byte checksum] [real authent'r]
902 * This hackery wouldn't be necessary if MIT KRB5 1.0.6 had the
903 * krb5_auth_con_getcksumtype() function advertised in its krb5.h.
1d97c843 904 */
0f113f3e
MC		 905unsigned char *kssl_skip_confound(krb5_enctype etype, unsigned char *a)
906{
907 int i, conlen;
908 size_t cklen;
909 static size_t *cksumlens = NULL;
910 unsigned char *test_auth;
911
912 conlen = (etype) ? 8 : 0;
913
914 if (!cksumlens && !(cksumlens = populate_cksumlens()))
915 return NULL;
916 for (i = 0; (cklen = cksumlens[i]) != 0; i++) {
917 test_auth = a + conlen + cklen;
918 if (kssl_test_confound(test_auth))
919 return test_auth;
920 }
2a1ef754 921
0f113f3e
MC		 922 return NULL;
923}
2a1ef754 924
0f113f3e
MC		 925/*
926 * Set kssl_err error info when reason text is a simple string kssl_err =
927 * struct { int reason; char text[KSSL_ERR_MAX+1]; }
928 */
929void kssl_err_set(KSSL_ERR *kssl_err, int reason, char *text)
930{
931 if (kssl_err == NULL)
932 return;
2a1ef754 933
0f113f3e
MC		 934 kssl_err->reason = reason;
935 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX, "%s", text);
936 return;
937}
2a1ef754 938
0f113f3e
MC		 939/*
940 * Display contents of krb5_data struct, for debugging
1d97c843 941 */
0f113f3e
MC		 942void print_krb5_data(char *label, krb5_data *kdata)
943{
944 int i;
43fcc1b0 945
0f113f3e
MC		 946 fprintf(stderr, "%s[%d] ", label, kdata->length);
947 for (i = 0; i < (int)kdata->length; i++) {
948 if (0 && isprint((int)kdata->data[i]))
949 fprintf(stderr, "%c ", kdata->data[i]);
950 else
951 fprintf(stderr, "%02x ", (unsigned char)kdata->data[i]);
952 }
953 fprintf(stderr, "\n");
954}
43fcc1b0 955
0f113f3e
MC		 956/*
957 * Display contents of krb5_authdata struct, for debugging
958 */
959void print_krb5_authdata(char *label, krb5_authdata **adata)
960{
961 if (adata == NULL) {
962 fprintf(stderr, "%s, authdata==0\n", label);
963 return;
964 }
965 fprintf(stderr, "%s [%p]\n", label, (void *)adata);
0f113f3e 966}
43fcc1b0 967
0f113f3e
MC		 968/*
969 * Display contents of krb5_keyblock struct, for debugging
970 */
971void print_krb5_keyblock(char *label, krb5_keyblock *keyblk)
972{
973 int i;
43fcc1b0 974
0f113f3e
MC		 975 if (keyblk == NULL) {
976 fprintf(stderr, "%s, keyblk==0\n", label);
977 return;
978 }
979# ifdef KRB5_HEIMDAL
980 fprintf(stderr, "%s\n\t[et%d:%d]: ", label, keyblk->keytype,
981 keyblk->keyvalue->length);
982 for (i = 0; i < (int)keyblk->keyvalue->length; i++) {
983 fprintf(stderr, "%02x",
984 (unsigned char *)(keyblk->keyvalue->contents)[i]);
985 }
986 fprintf(stderr, "\n");
987# else
988 fprintf(stderr, "%s\n\t[et%d:%d]: ", label, keyblk->enctype,
989 keyblk->length);
990 for (i = 0; i < (int)keyblk->length; i++) {
991 fprintf(stderr, "%02x", keyblk->contents[i]);
992 }
993 fprintf(stderr, "\n");
994# endif
995}
43fcc1b0 996
0f113f3e
MC		 997/*
998 * Display contents of krb5_principal_data struct, for debugging
999 * (krb5_principal is typedef'd == krb5_principal_data *)
1d97c843 1000 */
0f113f3e
MC		 1001static void print_krb5_princ(char *label, krb5_principal_data *princ)
1002{
1003 int i, ui, uj;
1004
1005 fprintf(stderr, "%s principal Realm: ", label);
1006 if (princ == NULL)
1007 return;
1008 for (ui = 0; ui < (int)princ->realm.length; ui++)
1009 putchar(princ->realm.data[ui]);
1010 fprintf(stderr, " (nametype %d) has %d strings:\n", princ->type,
1011 princ->length);
1012 for (i = 0; i < (int)princ->length; i++) {
1013 fprintf(stderr, "\t%d [%d]: ", i, princ->data[i].length);
1014 for (uj = 0; uj < (int)princ->data[i].length; uj++) {
1015 putchar(princ->data[i].data[uj]);
2a1ef754 1016 }
0f113f3e
MC		 1017 fprintf(stderr, "\n");
1018 }
1019 return;
1020}
2a1ef754 1021
0f113f3e
MC		 1022/*- Given krb5 service (typically "kssl") and hostname in kssl_ctx,
1023 * Return encrypted Kerberos ticket for service @ hostname.
1024 * If authenp is non-NULL, also return encrypted authenticator,
1025 * whose data should be freed by caller.
1026 * (Originally was: Create Kerberos AP_REQ message for SSL Client.)
1d97c843 1027 *
0f113f3e
MC		 1028 * 19990628 VRS Started; Returns Kerberos AP_REQ message.
1029 * 20010409 VRS Modified for RFC2712; Returns enc tkt.
1030 * 20010606 VRS May also return optional authenticator.
1d97c843 1031 */
0f113f3e
MC		 1032krb5_error_code kssl_cget_tkt( /* UPDATE */ KSSL_CTX *kssl_ctx,
1033 /*
1034 * OUT
1035 */ krb5_data **enc_ticketp,
1036 /*
1037 * UPDATE
1038 */ krb5_data *authenp,
1039 /*
1040 * OUT
1041 */ KSSL_ERR *kssl_err)
1042{
1043 krb5_error_code krb5rc = KRB5KRB_ERR_GENERIC;
1044 krb5_context krb5context = NULL;
1045 krb5_auth_context krb5auth_context = NULL;
1046 krb5_ccache krb5ccdef = NULL;
1047 krb5_creds krb5creds, *krb5credsp = NULL;
1048 krb5_data krb5_app_req;
1049
1050 kssl_err_set(kssl_err, 0, "");
16f8d4eb 1051 memset(&krb5creds, 0, sizeof(krb5creds));
0f113f3e
MC		 1052
1053 if (!kssl_ctx) {
1054 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT, "No kssl_ctx defined.\n");
1055 goto err;
1056 } else if (!kssl_ctx->service_host) {
1057 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1058 "kssl_ctx service_host undefined.\n");
1059 goto err;
1060 }
43fcc1b0 1061
0f113f3e
MC		 1062 if ((krb5rc = krb5_init_context(&krb5context)) != 0) {
1063 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
1064 "krb5_init_context() fails: %d\n", krb5rc);
1065 kssl_err->reason = SSL_R_KRB5_C_INIT;
1066 goto err;
1067 }
43fcc1b0 1068
0f113f3e
MC		 1069 if ((krb5rc = krb5_sname_to_principal(krb5context,
1070 kssl_ctx->service_host,
1071 (kssl_ctx->service_name) ?
1072 kssl_ctx->service_name : KRB5SVC,
1073 KRB5_NT_SRV_HST,
1074 &krb5creds.server)) != 0) {
1075 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
1076 "krb5_sname_to_principal() fails for %s/%s\n",
1077 kssl_ctx->service_host,
1078 (kssl_ctx->
1079 service_name) ? kssl_ctx->service_name : KRB5SVC);
1080 kssl_err->reason = SSL_R_KRB5_C_INIT;
1081 goto err;
1082 }
1083
1084 if ((krb5rc = krb5_cc_default(krb5context, &krb5ccdef)) != 0) {
1085 kssl_err_set(kssl_err, SSL_R_KRB5_C_CC_PRINC,
1086 "krb5_cc_default fails.\n");
1087 goto err;
1088 }
1089
1090 if ((krb5rc = krb5_cc_get_principal(krb5context, krb5ccdef,
1091 &krb5creds.client)) != 0) {
1092 kssl_err_set(kssl_err, SSL_R_KRB5_C_CC_PRINC,
1093 "krb5_cc_get_principal() fails.\n");
1094 goto err;
1095 }
1096
1097 if ((krb5rc = krb5_get_credentials(krb5context, 0, krb5ccdef,
1098 &krb5creds, &krb5credsp)) != 0) {
1099 kssl_err_set(kssl_err, SSL_R_KRB5_C_GET_CRED,
1100 "krb5_get_credentials() fails.\n");
1101 goto err;
1102 }
1103
1104 *enc_ticketp = &krb5credsp->ticket;
1105# ifdef KRB5_HEIMDAL
1106 kssl_ctx->enctype = krb5credsp->session.keytype;
1107# else
1108 kssl_ctx->enctype = krb5credsp->keyblock.enctype;
1109# endif
1110
1111 krb5rc = KRB5KRB_ERR_GENERIC;
1112 /* caller should free data of krb5_app_req */
1113 /*
1114 * 20010406 VRS deleted for real KerberosWrapper 20010605 VRS reinstated
1115 * to offer Authenticator to KerberosWrapper
1116 */
1117 krb5_app_req.length = 0;
1118 if (authenp) {
1119 krb5_data krb5in_data;
1120 const unsigned char *p;
1121 long arlen;
1122 KRB5_APREQBODY *ap_req;
1123
1124 authenp->length = 0;
1125 krb5in_data.data = NULL;
1126 krb5in_data.length = 0;
1127 if ((krb5rc = krb5_mk_req_extended(krb5context,
1128 &krb5auth_context, 0, &krb5in_data,
1129 krb5credsp, &krb5_app_req)) != 0) {
1130 kssl_err_set(kssl_err, SSL_R_KRB5_C_MK_REQ,
1131 "krb5_mk_req_extended() fails.\n");
1132 goto err;
1133 }
43fcc1b0 1134
0f113f3e
MC		 1135 arlen = krb5_app_req.length;
1136 p = (unsigned char *)krb5_app_req.data;
1137 ap_req = (KRB5_APREQBODY *)d2i_KRB5_APREQ(NULL, &p, arlen);
1138 if (ap_req) {
1139 authenp->length = i2d_KRB5_ENCDATA(ap_req->authenticator, NULL);
1140 if (authenp->length && (authenp->data = malloc(authenp->length))) {
1141 unsigned char *adp = (unsigned char *)authenp->data;
1142 authenp->length =
1143 i2d_KRB5_ENCDATA(ap_req->authenticator, &adp);
1144 }
1145 }
1146
1147 if (ap_req)
1148 KRB5_APREQ_free((KRB5_APREQ *) ap_req);
1149 if (krb5_app_req.length)
1150 kssl_krb5_free_data_contents(krb5context, &krb5_app_req);
1151 }
1152# ifdef KRB5_HEIMDAL
1153 if (kssl_ctx_setkey(kssl_ctx, &krb5credsp->session)) {
1154 kssl_err_set(kssl_err, SSL_R_KRB5_C_INIT,
1155 "kssl_ctx_setkey() fails.\n");
1156 }
1157# else
1158 if (kssl_ctx_setkey(kssl_ctx, &krb5credsp->keyblock)) {
1159 kssl_err_set(kssl_err, SSL_R_KRB5_C_INIT,
1160 "kssl_ctx_setkey() fails.\n");
1161 }
1162# endif
1163 else
1164 krb5rc = 0;
1165
1166 err:
1167# ifdef KSSL_DEBUG
1168 kssl_ctx_show(kssl_ctx);
1169# endif /* KSSL_DEBUG */
1170
1171 if (krb5creds.client)
1172 krb5_free_principal(krb5context, krb5creds.client);
1173 if (krb5creds.server)
1174 krb5_free_principal(krb5context, krb5creds.server);
1175 if (krb5auth_context)
1176 krb5_auth_con_free(krb5context, krb5auth_context);
1177 if (krb5context)
1178 krb5_free_context(krb5context);
1179 return (krb5rc);
1180}
43fcc1b0 1181
1d97c843
TH		 1182/*-
1183 * Given d2i_-decoded asn1ticket, allocate and return a new krb5_ticket.
1184 * Return Kerberos error code and kssl_err struct on error.
1185 * Allocates krb5_ticket and krb5_principal; caller should free these.
1186 *
0f113f3e
MC		 1187 * 20010410 VRS Implemented krb5_decode_ticket() as
1188 * old_krb5_decode_ticket(). Missing from MIT1.0.6.
1189 * 20010615 VRS Re-cast as openssl/asn1 d2i_*() functions.
1190 * Re-used some of the old krb5_decode_ticket()
1191 * code here. This tkt should alloc/free just
1192 * like the real thing.
1d97c843 1193 */
0f113f3e
MC		 1194static krb5_error_code kssl_TKT2tkt( /* IN */ krb5_context krb5context,
1195 /*
1196 * IN
1197 */ KRB5_TKTBODY *asn1ticket,
1198 /*
1199 * OUT
1200 */ krb5_ticket **krb5ticket,
1201 /*
1202 * OUT
1203 */ KSSL_ERR *kssl_err)
1204{
1205 krb5_error_code krb5rc = KRB5KRB_ERR_GENERIC;
1206 krb5_ticket *new5ticket = NULL;
1207 ASN1_GENERALSTRING *gstr_svc, *gstr_host;
1208
1209 *krb5ticket = NULL;
1210
1211 if (asn1ticket == NULL || asn1ticket->realm == NULL ||
1212 asn1ticket->sname == NULL ||
1213 sk_ASN1_GENERALSTRING_num(asn1ticket->sname->namestring) < 2) {
1214 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
1215 "Null field in asn1ticket.\n");
1216 kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
1217 return KRB5KRB_ERR_GENERIC;
1218 }
1219
1220 if ((new5ticket = (krb5_ticket *)calloc(1, sizeof(krb5_ticket))) == NULL) {
1221 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
1222 "Unable to allocate new krb5_ticket.\n");
1223 kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
1224 return ENOMEM; /* or KRB5KRB_ERR_GENERIC; */
1225 }
1226
1227 gstr_svc = sk_ASN1_GENERALSTRING_value(asn1ticket->sname->namestring, 0);
1228 gstr_host = sk_ASN1_GENERALSTRING_value(asn1ticket->sname->namestring, 1);
1229
1230 if ((krb5rc = kssl_build_principal_2(krb5context,
1231 &new5ticket->server,
1232 asn1ticket->realm->length,
1233 (char *)asn1ticket->realm->data,
1234 gstr_svc->length,
1235 (char *)gstr_svc->data,
1236 gstr_host->length,
1237 (char *)gstr_host->data)) != 0) {
1238 free(new5ticket);
1239 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
1240 "Error building ticket server principal.\n");
1241 kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
1242 return krb5rc; /* or KRB5KRB_ERR_GENERIC; */
1243 }
2a1ef754 1244
0f113f3e
MC		 1245 krb5_princ_type(krb5context, new5ticket->server) =
1246 asn1ticket->sname->nametype->data[0];
1247 new5ticket->enc_part.enctype = asn1ticket->encdata->etype->data[0];
1248 new5ticket->enc_part.kvno = asn1ticket->encdata->kvno->data[0];
1249 new5ticket->enc_part.ciphertext.length =
1250 asn1ticket->encdata->cipher->length;
1251 if ((new5ticket->enc_part.ciphertext.data =
1252 calloc(1, asn1ticket->encdata->cipher->length)) == NULL) {
1253 free(new5ticket);
1254 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
1255 "Error allocating cipher in krb5ticket.\n");
1256 kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
1257 return KRB5KRB_ERR_GENERIC;
1258 } else {
1259 memcpy(new5ticket->enc_part.ciphertext.data,
1260 asn1ticket->encdata->cipher->data,
1261 asn1ticket->encdata->cipher->length);
1262 }
1263
1264 *krb5ticket = new5ticket;
1265 return 0;
1266}
2a1ef754 1267
23a22b4c 1268/*-
0f113f3e
MC		 1269 * Given krb5 service name in KSSL_CTX *kssl_ctx (typically "kssl"),
1270 * and krb5 AP_REQ message & message length,
1271 * Return Kerberos session key and client principle
1272 * to SSL Server in KSSL_CTX *kssl_ctx.
1d97c843 1273 *
0f113f3e 1274 * 19990702 VRS Started.
1d97c843 1275 */
0f113f3e
MC		 1276krb5_error_code kssl_sget_tkt( /* UPDATE */ KSSL_CTX *kssl_ctx,
1277 /*
1278 * IN
1279 */ krb5_data *indata,
1280 /*
1281 * OUT
1282 */ krb5_ticket_times *ttimes,
1283 /*
1284 * OUT
1285 */ KSSL_ERR *kssl_err)
1286{
1287 krb5_error_code krb5rc = KRB5KRB_ERR_GENERIC;
1288 static krb5_context krb5context = NULL;
1289 static krb5_auth_context krb5auth_context = NULL;
1290 krb5_ticket *krb5ticket = NULL;
1291 KRB5_TKTBODY *asn1ticket = NULL;
1292 const unsigned char *p;
1293 krb5_keytab krb5keytab = NULL;
1294 krb5_keytab_entry kt_entry;
1295 krb5_principal krb5server;
1296 krb5_rcache rcache = NULL;
1297
1298 kssl_err_set(kssl_err, 0, "");
1299
1300 if (!kssl_ctx) {
1301 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT, "No kssl_ctx defined.\n");
1302 goto err;
1303 }
1304# ifdef KSSL_DEBUG
1305 fprintf(stderr, "in kssl_sget_tkt(%s)\n",
1306 kstring(kssl_ctx->service_name));
1307# endif /* KSSL_DEBUG */
1308
1309 if (!krb5context && (krb5rc = krb5_init_context(&krb5context))) {
1310 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1311 "krb5_init_context() fails.\n");
1312 goto err;
1313 }
1314 if (krb5auth_context &&
1315 (krb5rc = krb5_auth_con_free(krb5context, krb5auth_context))) {
1316 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1317 "krb5_auth_con_free() fails.\n");
1318 goto err;
1319 } else
1320 krb5auth_context = NULL;
1321 if (!krb5auth_context &&
1322 (krb5rc = krb5_auth_con_init(krb5context, &krb5auth_context))) {
1323 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1324 "krb5_auth_con_init() fails.\n");
1325 goto err;
1326 }
a5224c34 1327
0f113f3e
MC		 1328 if ((krb5rc = krb5_auth_con_getrcache(krb5context, krb5auth_context,
1329 &rcache))) {
1330 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1331 "krb5_auth_con_getrcache() fails.\n");
1332 goto err;
1333 }
a5224c34 1334
0f113f3e
MC		 1335 if ((krb5rc = krb5_sname_to_principal(krb5context, NULL,
1336 (kssl_ctx->service_name) ?
1337 kssl_ctx->service_name : KRB5SVC,
1338 KRB5_NT_SRV_HST,
1339 &krb5server)) != 0) {
1340 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1341 "krb5_sname_to_principal() fails.\n");
1342 goto err;
1343 }
a5224c34 1344
0f113f3e
MC		 1345 if (rcache == NULL) {
1346 if ((krb5rc = krb5_get_server_rcache(krb5context,
1347 krb5_princ_component(krb5context,
1348 krb5server,
1349 0),
1350 &rcache))) {
1351 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1352 "krb5_get_server_rcache() fails.\n");
1353 goto err;
1354 }
1355 }
2a1ef754 1356
0f113f3e
MC		 1357 if ((krb5rc =
1358 krb5_auth_con_setrcache(krb5context, krb5auth_context, rcache))) {
1359 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1360 "krb5_auth_con_setrcache() fails.\n");
1361 goto err;
1362 }
1363
1364 /*
1365 * kssl_ctx->keytab_file == NULL ==> use Kerberos default
1366 */
1367 if (kssl_ctx->keytab_file) {
1368 krb5rc = krb5_kt_resolve(krb5context, kssl_ctx->keytab_file,
1369 &krb5keytab);
1370 if (krb5rc) {
1371 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1372 "krb5_kt_resolve() fails.\n");
1373 goto err;
43fcc1b0 1374 }
0f113f3e
MC		 1375 } else {
1376 krb5rc = krb5_kt_default(krb5context, &krb5keytab);
1377 if (krb5rc) {
1378 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1379 "krb5_kt_default() fails.\n");
1380 goto err;
1381 }
1382 }
1383
50e735f9
MC		 1384 /*- Actual Kerberos5 krb5_recvauth() has initial conversation here
1385 * o check KRB5_SENDAUTH_BADAUTHVERS
1386 * unless KRB5_RECVAUTH_SKIP_VERSION
1387 * o check KRB5_SENDAUTH_BADAPPLVERS
1388 * o send "0" msg if all OK
1389 */
1390
1391 /*-
1392 * 20010411 was using AP_REQ instead of true KerberosWrapper
1393 *
1394 * if ((krb5rc = krb5_rd_req(krb5context, &krb5auth_context,
1395 * &krb5in_data, krb5server, krb5keytab,
1396 * &ap_option, &krb5ticket)) != 0) { Error }
1397 */
0f113f3e
MC		 1398
1399 p = (unsigned char *)indata->data;
1400 if ((asn1ticket = (KRB5_TKTBODY *)d2i_KRB5_TICKET(NULL, &p,
1401 (long)indata->length))
1402 == NULL) {
1403 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
1404 "d2i_KRB5_TICKET() ASN.1 decode failure.\n");
1405 kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
1406 goto err;
1407 }
43fcc1b0 1408
0f113f3e
MC		 1409 /*
1410 * Was: krb5rc = krb5_decode_ticket(krb5in_data,&krb5ticket)) != 0)
1411 */
1412 if ((krb5rc = kssl_TKT2tkt(krb5context, asn1ticket, &krb5ticket,
1413 kssl_err)) != 0) {
1414 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
1415 "Error converting ASN.1 ticket to krb5_ticket.\n");
1416 kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
1417 goto err;
1418 }
43fcc1b0 1419
0f113f3e
MC		 1420 if (!krb5_principal_compare(krb5context, krb5server, krb5ticket->server)) {
1421 krb5rc = KRB5_PRINC_NOMATCH;
1422 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
1423 "server principal != ticket principal\n");
1424 kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
1425 goto err;
1426 }
1427 if ((krb5rc = krb5_kt_get_entry(krb5context, krb5keytab,
1428 krb5ticket->server,
1429 krb5ticket->enc_part.kvno,
1430 krb5ticket->enc_part.enctype,
1431 &kt_entry)) != 0) {
1432 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
1433 "krb5_kt_get_entry() fails with %x.\n", krb5rc);
1434 kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
1435 goto err;
1436 }
1437 if ((krb5rc = krb5_decrypt_tkt_part(krb5context, &kt_entry.key,
1438 krb5ticket)) != 0) {
1439 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
1440 "krb5_decrypt_tkt_part() failed.\n");
1441 kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
1442 goto err;
1443 } else {
1444 krb5_kt_free_entry(krb5context, &kt_entry);
1445# ifdef KSSL_DEBUG
43fcc1b0 1446 {
0f113f3e
MC		 1447 int i;
1448 krb5_address **paddr = krb5ticket->enc_part2->caddrs;
1449 fprintf(stderr, "Decrypted ticket fields:\n");
1450 fprintf(stderr, "\tflags: %X, transit-type: %X",
1451 krb5ticket->enc_part2->flags,
1452 krb5ticket->enc_part2->transited.tr_type);
1453 print_krb5_data("\ttransit-data: ",
1454 &(krb5ticket->enc_part2->transited.tr_contents));
1455 fprintf(stderr, "\tcaddrs: %p, authdata: %p\n",
1456 krb5ticket->enc_part2->caddrs,
1457 krb5ticket->enc_part2->authorization_data);
1458 if (paddr) {
1459 fprintf(stderr, "\tcaddrs:\n");
1460 for (i = 0; paddr[i] != NULL; i++) {
1461 krb5_data d;
1462 d.length = paddr[i]->length;
1463 d.data = paddr[i]->contents;
1464 print_krb5_data("\t\tIP: ", &d);
1465 }
1466 }
1467 fprintf(stderr, "\tstart/auth/end times: %d / %d / %d\n",
1468 krb5ticket->enc_part2->times.starttime,
1469 krb5ticket->enc_part2->times.authtime,
1470 krb5ticket->enc_part2->times.endtime);
43fcc1b0 1471 }
0f113f3e
MC		 1472# endif /* KSSL_DEBUG */
1473 }
43fcc1b0 1474
0f113f3e
MC		 1475 krb5rc = KRB5_NO_TKT_SUPPLIED;
1476 if (!krb5ticket || !krb5ticket->enc_part2 ||
1477 !krb5ticket->enc_part2->client ||
1478 !krb5ticket->enc_part2->client->data ||
1479 !krb5ticket->enc_part2->session) {
1480 kssl_err_set(kssl_err, SSL_R_KRB5_S_BAD_TICKET,
1481 "bad ticket from krb5_rd_req.\n");
1482 } else if (kssl_ctx_setprinc(kssl_ctx, KSSL_CLIENT,
1483 &krb5ticket->enc_part2->client->realm,
1484 krb5ticket->enc_part2->client->data,
1485 krb5ticket->enc_part2->client->length)) {
1486 kssl_err_set(kssl_err, SSL_R_KRB5_S_BAD_TICKET,
1487 "kssl_ctx_setprinc() fails.\n");
1488 } else if (kssl_ctx_setkey(kssl_ctx, krb5ticket->enc_part2->session)) {
1489 kssl_err_set(kssl_err, SSL_R_KRB5_S_BAD_TICKET,
1490 "kssl_ctx_setkey() fails.\n");
1491 } else if (krb5ticket->enc_part2->flags & TKT_FLG_INVALID) {
1492 krb5rc = KRB5KRB_AP_ERR_TKT_INVALID;
1493 kssl_err_set(kssl_err, SSL_R_KRB5_S_BAD_TICKET,
1494 "invalid ticket from krb5_rd_req.\n");
1495 } else
1496 krb5rc = 0;
1497
1498 kssl_ctx->enctype = krb5ticket->enc_part.enctype;
1499 ttimes->authtime = krb5ticket->enc_part2->times.authtime;
1500 ttimes->starttime = krb5ticket->enc_part2->times.starttime;
1501 ttimes->endtime = krb5ticket->enc_part2->times.endtime;
1502 ttimes->renew_till = krb5ticket->enc_part2->times.renew_till;
43fcc1b0 1503
0f113f3e
MC		 1504 err:
1505# ifdef KSSL_DEBUG
1506 kssl_ctx_show(kssl_ctx);
1507# endif /* KSSL_DEBUG */
1508
1509 if (asn1ticket)
1510 KRB5_TICKET_free((KRB5_TICKET *) asn1ticket);
1511 if (krb5keytab)
1512 krb5_kt_close(krb5context, krb5keytab);
1513 if (krb5ticket)
1514 krb5_free_ticket(krb5context, krb5ticket);
1515 if (krb5server)
1516 krb5_free_principal(krb5context, krb5server);
1517 return (krb5rc);
1518}
1519
1520/*
1521 * Allocate & return a new kssl_ctx struct.
1d97c843 1522 */
0f113f3e
MC		 1523KSSL_CTX *kssl_ctx_new(void)
1524{
1525 return ((KSSL_CTX *)kssl_calloc(1, sizeof(KSSL_CTX)));
1526}
1527
1528/*
1529 * Frees a kssl_ctx struct and any allocated memory it holds. Returns NULL.
1530 */
1531KSSL_CTX *kssl_ctx_free(KSSL_CTX *kssl_ctx)
1532{
1533 if (kssl_ctx == NULL)
1534 return kssl_ctx;
1535
1536 if (kssl_ctx->key)
1537 OPENSSL_cleanse(kssl_ctx->key, kssl_ctx->length);
1538 if (kssl_ctx->key)
1539 kssl_free(kssl_ctx->key);
1540 if (kssl_ctx->client_princ)
1541 kssl_free(kssl_ctx->client_princ);
1542 if (kssl_ctx->service_host)
1543 kssl_free(kssl_ctx->service_host);
1544 if (kssl_ctx->service_name)
1545 kssl_free(kssl_ctx->service_name);
1546 if (kssl_ctx->keytab_file)
1547 kssl_free(kssl_ctx->keytab_file);
43fcc1b0 1548
0f113f3e
MC		 1549 kssl_free(kssl_ctx);
1550 return (KSSL_CTX *)NULL;
1551}
43fcc1b0 1552
0f113f3e
MC		 1553/*
1554 * Given an array of (krb5_data *) entity (and optional realm), set the plain
1555 * (char *) client_princ or service_host member of the kssl_ctx struct.
1d97c843 1556 */
43fcc1b0
RL		 1557krb5_error_code
1558kssl_ctx_setprinc(KSSL_CTX *kssl_ctx, int which,
0f113f3e
MC		 1559 krb5_data *realm, krb5_data *entity, int nentities)
1560{
1561 char **princ;
1562 int length;
1563 int i;
1564
1565 if (kssl_ctx == NULL || entity == NULL)
1566 return KSSL_CTX_ERR;
1567
1568 switch (which) {
1569 case KSSL_CLIENT:
1570 princ = &kssl_ctx->client_princ;
1571 break;
1572 case KSSL_SERVER:
1573 princ = &kssl_ctx->service_host;
1574 break;
1575 default:
1576 return KSSL_CTX_ERR;
1577 break;
1578 }
1579 if (*princ)
1580 kssl_free(*princ);
1581
1582 /* Add up all the entity->lengths */
1583 length = 0;
1584 for (i = 0; i < nentities; i++) {
1585 length += entity[i].length;
1586 }
1587 /* Add in space for the '/' character(s) (if any) */
1588 length += nentities - 1;
1589 /* Space for the ('@'+realm+NULL | NULL) */
1590 length += ((realm) ? realm->length + 2 : 1);
1591
1592 if ((*princ = kssl_calloc(1, length)) == NULL)
1593 return KSSL_CTX_ERR;
1594 else {
1595 for (i = 0; i < nentities; i++) {
1596 strncat(*princ, entity[i].data, entity[i].length);
1597 if (i < nentities - 1) {
1598 strcat(*princ, "/");
1599 }
1600 }
1601 if (realm) {
1602 strcat(*princ, "@");
1603 (void)strncat(*princ, realm->data, realm->length);
43fcc1b0 1604 }
0f113f3e 1605 }
43fcc1b0 1606
0f113f3e
MC		 1607 return KSSL_CTX_OK;
1608}
43fcc1b0 1609
0f113f3e
MC		 1610/*- Set one of the plain (char *) string members of the kssl_ctx struct.
1611 * Default values should be:
1612 * which == KSSL_SERVICE => "khost" (KRB5SVC)
1613 * which == KSSL_KEYTAB => "/etc/krb5.keytab" (KRB5KEYTAB)
1d97c843 1614 */
0f113f3e
MC		 1615krb5_error_code kssl_ctx_setstring(KSSL_CTX *kssl_ctx, int which, char *text)
1616{
1617 char **string;
1618
1619 if (!kssl_ctx)
1620 return KSSL_CTX_ERR;
1621
1622 switch (which) {
1623 case KSSL_SERVICE:
1624 string = &kssl_ctx->service_name;
1625 break;
1626 case KSSL_SERVER:
1627 string = &kssl_ctx->service_host;
1628 break;
1629 case KSSL_CLIENT:
1630 string = &kssl_ctx->client_princ;
1631 break;
1632 case KSSL_KEYTAB:
1633 string = &kssl_ctx->keytab_file;
1634 break;
1635 default:
1636 return KSSL_CTX_ERR;
1637 break;
1638 }
1639 if (*string)
1640 kssl_free(*string);
43fcc1b0 1641
0f113f3e
MC		 1642 if (!text) {
1643 *string = '\0';
1644 return KSSL_CTX_OK;
1645 }
1646
1647 if ((*string = kssl_calloc(1, strlen(text) + 1)) == NULL)
1648 return KSSL_CTX_ERR;
1649 else
1650 strcpy(*string, text);
43fcc1b0 1651
0f113f3e
MC		 1652 return KSSL_CTX_OK;
1653}
1654
1655/*
1656 * Copy the Kerberos session key from a (krb5_keyblock *) to a kssl_ctx
1657 * struct. Clear kssl_ctx->key if Kerberos session key is NULL.
1d97c843 1658 */
0f113f3e
MC		 1659krb5_error_code kssl_ctx_setkey(KSSL_CTX *kssl_ctx, krb5_keyblock *session)
1660{
1661 int length;
1662 krb5_enctype enctype;
1663 krb5_octet FAR *contents = NULL;
43fcc1b0 1664
0f113f3e
MC		 1665 if (!kssl_ctx)
1666 return KSSL_CTX_ERR;
43fcc1b0 1667
0f113f3e
MC		 1668 if (kssl_ctx->key) {
1669 OPENSSL_cleanse(kssl_ctx->key, kssl_ctx->length);
1670 kssl_free(kssl_ctx->key);
1671 }
43fcc1b0 1672
0f113f3e
MC		 1673 if (session) {
1674
1675# ifdef KRB5_HEIMDAL
1676 length = session->keyvalue->length;
1677 enctype = session->keytype;
1678 contents = session->keyvalue->contents;
1679# else
1680 length = session->length;
1681 enctype = session->enctype;
1682 contents = session->contents;
1683# endif
1684 kssl_ctx->enctype = enctype;
1685 kssl_ctx->length = length;
1686 } else {
1687 kssl_ctx->enctype = ENCTYPE_UNKNOWN;
1688 kssl_ctx->length = 0;
1689 return KSSL_CTX_OK;
1690 }
1691
1692 if ((kssl_ctx->key =
1693 (krb5_octet FAR *)kssl_calloc(1, kssl_ctx->length)) == NULL) {
1694 kssl_ctx->length = 0;
1695 return KSSL_CTX_ERR;
1696 } else
1697 memcpy(kssl_ctx->key, contents, length);
1698
1699 return KSSL_CTX_OK;
1700}
1701
1702/*
1703 * Display contents of kssl_ctx struct
1704 */
1705void kssl_ctx_show(KSSL_CTX *kssl_ctx)
1706{
1707 int i;
1708
1709 printf("kssl_ctx: ");
1710 if (kssl_ctx == NULL) {
1711 printf("NULL\n");
1712 return;
1713 } else
1714 printf("%p\n", (void *)kssl_ctx);
1715
1716 printf("\tservice:\t%s\n",
1717 (kssl_ctx->service_name) ? kssl_ctx->service_name : "NULL");
1718 printf("\tclient:\t%s\n",
1719 (kssl_ctx->client_princ) ? kssl_ctx->client_princ : "NULL");
1720 printf("\tserver:\t%s\n",
1721 (kssl_ctx->service_host) ? kssl_ctx->service_host : "NULL");
1722 printf("\tkeytab:\t%s\n",
1723 (kssl_ctx->keytab_file) ? kssl_ctx->keytab_file : "NULL");
1724 printf("\tkey [%d:%d]:\t", kssl_ctx->enctype, kssl_ctx->length);
1725
1726 for (i = 0; i < kssl_ctx->length && kssl_ctx->key; i++) {
1727 printf("%02x", kssl_ctx->key[i]);
1728 }
1729 printf("\n");
1730 return;
1731}
1732
1733int kssl_keytab_is_available(KSSL_CTX *kssl_ctx)
a5224c34 1734{
0f113f3e
MC		 1735 krb5_context krb5context = NULL;
1736 krb5_keytab krb5keytab = NULL;
1737 krb5_keytab_entry entry;
1738 krb5_principal princ = NULL;
1739 krb5_error_code krb5rc = KRB5KRB_ERR_GENERIC;
a5224c34
RL		 1740 int rc = 0;
1741
1742 if ((krb5rc = krb5_init_context(&krb5context)))
0f113f3e 1743 return (0);
a5224c34 1744
0f113f3e
MC		 1745 /*
1746 * kssl_ctx->keytab_file == NULL ==> use Kerberos default
1747 */
1748 if (kssl_ctx->keytab_file) {
a5224c34 1749 krb5rc = krb5_kt_resolve(krb5context, kssl_ctx->keytab_file,
0f113f3e 1750 &krb5keytab);
a5224c34
RL		 1751 if (krb5rc)
1752 goto exit;
0f113f3e
MC		 1753 } else {
1754 krb5rc = krb5_kt_default(krb5context, &krb5keytab);
a5224c34
RL		 1755 if (krb5rc)
1756 goto exit;
1757 }
1758
1759 /* the host key we are looking for */
0f113f3e
MC		 1760 krb5rc = krb5_sname_to_principal(krb5context, NULL,
1761 kssl_ctx->
1762 service_name ? kssl_ctx->service_name :
1763 KRB5SVC, KRB5_NT_SRV_HST, &princ);
a5224c34 1764
cca1cd9a 1765 if (krb5rc)
0f113f3e
MC		 1766 goto exit;
1767
1768 krb5rc = krb5_kt_get_entry(krb5context, krb5keytab, princ,
1769 /* IGNORE_VNO */
1770 0,
1771 /* IGNORE_ENCTYPE */
1772 0, &entry);
1773 if (krb5rc == KRB5_KT_NOTFOUND) {
a5224c34
RL		 1774 rc = 1;
1775 goto exit;
0f113f3e 1776 } else if (krb5rc)
a5224c34 1777 goto exit;
0f113f3e 1778
a5224c34
RL		 1779 krb5_kt_free_entry(krb5context, &entry);
1780 rc = 1;
1781
0f113f3e
MC		 1782 exit:
1783 if (krb5keytab)
1784 krb5_kt_close(krb5context, krb5keytab);
1785 if (princ)
1786 krb5_free_principal(krb5context, princ);
1787 if (krb5context)
1788 krb5_free_context(krb5context);
1789 return (rc);
a5224c34
RL		 1790}
1791
0f113f3e
MC		 1792int kssl_tgt_is_available(KSSL_CTX *kssl_ctx)
1793{
1794 krb5_error_code krb5rc = KRB5KRB_ERR_GENERIC;
1795 krb5_context krb5context = NULL;
1796 krb5_ccache krb5ccdef = NULL;
1797 krb5_creds krb5creds, *krb5credsp = NULL;
1798 int rc = 0;
a5224c34 1799
16f8d4eb 1800 memset(&krb5creds, 0, sizeof(krb5creds));
a5224c34 1801
0f113f3e
MC		 1802 if (!kssl_ctx)
1803 return (0);
a5224c34 1804
0f113f3e
MC		 1805 if (!kssl_ctx->service_host)
1806 return (0);
a5224c34 1807
0f113f3e
MC		 1808 if ((krb5rc = krb5_init_context(&krb5context)) != 0)
1809 goto err;
a5224c34 1810
0f113f3e
MC		 1811 if ((krb5rc = krb5_sname_to_principal(krb5context,
1812 kssl_ctx->service_host,
1813 (kssl_ctx->service_name) ?
1814 kssl_ctx->service_name : KRB5SVC,
1815 KRB5_NT_SRV_HST,
1816 &krb5creds.server)) != 0)
1817 goto err;
a5224c34 1818
0f113f3e
MC		 1819 if ((krb5rc = krb5_cc_default(krb5context, &krb5ccdef)) != 0)
1820 goto err;
a5224c34 1821
0f113f3e
MC		 1822 if ((krb5rc = krb5_cc_get_principal(krb5context, krb5ccdef,
1823 &krb5creds.client)) != 0)
1824 goto err;
a5224c34 1825
0f113f3e
MC		 1826 if ((krb5rc = krb5_get_credentials(krb5context, 0, krb5ccdef,
1827 &krb5creds, &krb5credsp)) != 0)
1828 goto err;
a5224c34 1829
0f113f3e 1830 rc = 1;
a5224c34 1831
0f113f3e
MC		 1832 err:
1833# ifdef KSSL_DEBUG
1834 kssl_ctx_show(kssl_ctx);
1835# endif /* KSSL_DEBUG */
1836
1837 if (krb5creds.client)
1838 krb5_free_principal(krb5context, krb5creds.client);
1839 if (krb5creds.server)
1840 krb5_free_principal(krb5context, krb5creds.server);
1841 if (krb5context)
1842 krb5_free_context(krb5context);
1843 return (rc);
1844}
a5224c34 1845
0f113f3e 1846# if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_WIN32)
f9b3bff6 1847void kssl_krb5_free_data_contents(krb5_context context, krb5_data *data)
0f113f3e
MC		 1848{
1849# ifdef KRB5_HEIMDAL
1850 data->length = 0;
1851 if (data->data)
1852 free(data->data);
1853# elif defined(KRB5_MIT_OLD11)
1854 if (data->data) {
1855 krb5_xfree(data->data);
1856 data->data = 0;
1857 }
1858# else
1859 krb5_free_data_contents(NULL, data);
1860# endif
1861}
1862# endif
68d39f3c 1863/* !OPENSSL_SYS_WINDOWS && !OPENSSL_SYS_WIN32 */
2a1ef754 1864
0f113f3e
MC		 1865/*
1866 * Given pointers to KerberosTime and struct tm structs, convert the
1867 * KerberosTime string to struct tm. Note that KerberosTime is a
1868 * ASN1_GENERALIZEDTIME value, constrained to GMT with no fractional seconds
1869 * as defined in RFC 1510. Return pointer to the (partially) filled in
1870 * struct tm on success, return NULL on failure.
1d97c843 1871 */
ef236ec3 1872static struct tm *k_gmtime(ASN1_GENERALIZEDTIME *gtime, struct tm *k_tm)
0f113f3e
MC		 1873{
1874 char c, *p;
1875
1876 if (!k_tm)
1877 return NULL;
1878 if (gtime == NULL || gtime->length < 14)
1879 return NULL;
1880 if (gtime->data == NULL)
1881 return NULL;
1882
1883 p = (char *)&gtime->data[14];
1884
1885 c = *p;
1886 *p = '\0';
1887 p -= 2;
1888 k_tm->tm_sec = atoi(p);
1889 *(p + 2) = c;
1890 c = *p;
1891 *p = '\0';
1892 p -= 2;
1893 k_tm->tm_min = atoi(p);
1894 *(p + 2) = c;
1895 c = *p;
1896 *p = '\0';
1897 p -= 2;
1898 k_tm->tm_hour = atoi(p);
1899 *(p + 2) = c;
1900 c = *p;
1901 *p = '\0';
1902 p -= 2;
1903 k_tm->tm_mday = atoi(p);
1904 *(p + 2) = c;
1905 c = *p;
1906 *p = '\0';
1907 p -= 2;
1908 k_tm->tm_mon = atoi(p) - 1;
1909 *(p + 2) = c;
1910 c = *p;
1911 *p = '\0';
1912 p -= 4;
1913 k_tm->tm_year = atoi(p) - 1900;
1914 *(p + 4) = c;
1915
1916 return k_tm;
1917}
acdf4afb 1918
0f113f3e
MC		 1919/*
1920 * Helper function for kssl_validate_times(). We need context->clockskew,
1921 * but krb5_context is an opaque struct. So we try to sneek the clockskew
1922 * out through the replay cache. If that fails just return a likely default
1923 * (300 seconds).
1d97c843 1924 */
ef236ec3 1925static krb5_deltat get_rc_clockskew(krb5_context context)
0f113f3e
MC		 1926{
1927 krb5_rcache rc;
1928 krb5_deltat clockskew;
1929
1930 if (krb5_rc_default(context, &rc))
1931 return KSSL_CLOCKSKEW;
1932 if (krb5_rc_initialize(context, rc, 0))
1933 return KSSL_CLOCKSKEW;
1934 if (krb5_rc_get_lifespan(context, rc, &clockskew)) {
1935 clockskew = KSSL_CLOCKSKEW;
1936 }
1937 (void)krb5_rc_destroy(context, rc);
1938 return clockskew;
1939}
1940
1941/*
1942 * kssl_validate_times() combines (and more importantly exposes) the MIT KRB5
1943 * internal function krb5_validate_times() and the in_clock_skew() macro.
1944 * The authenticator client time is checked to be within clockskew secs of
1945 * the current time and the current time is checked to be within the ticket
1946 * start and expire times. Either check may be omitted by supplying a NULL
1947 * value. Returns 0 for valid times, SSL_R_KRB5* error codes otherwise. See
1948 * Also: (Kerberos source)/krb5/lib/krb5/krb/valid_times.c 20010420 VRS
1d97c843 1949 */
0f113f3e
MC		 1950krb5_error_code kssl_validate_times(krb5_timestamp atime,
1951 krb5_ticket_times *ttimes)
1952{
1953 krb5_deltat skew;
1954 krb5_timestamp start, now;
1955 krb5_error_code rc;
1956 krb5_context context;
1957
1958 if ((rc = krb5_init_context(&context)))
1959 return SSL_R_KRB5_S_BAD_TICKET;
1960 skew = get_rc_clockskew(context);
1961 if ((rc = krb5_timeofday(context, &now)))
1962 return SSL_R_KRB5_S_BAD_TICKET;
1963 krb5_free_context(context);
1964
1965 if (atime && labs(atime - now) >= skew)
1966 return SSL_R_KRB5_S_TKT_SKEW;
1967
1968 if (!ttimes)
1969 return 0;
1970
1971 start = (ttimes->starttime != 0) ? ttimes->starttime : ttimes->authtime;
1972 if (start - now > skew)
1973 return SSL_R_KRB5_S_TKT_NYV;
1974 if ((now - ttimes->endtime) > skew)
1975 return SSL_R_KRB5_S_TKT_EXPIRED;
1976
1977# ifdef KSSL_DEBUG
1978 fprintf(stderr, "kssl_validate_times: %d |<- | %d - %d | < %d ->| %d\n",
1979 start, atime, now, skew, ttimes->endtime);
1980# endif /* KSSL_DEBUG */
1981
1982 return 0;
1983}
1984
1985/*
1986 * Decode and decrypt given DER-encoded authenticator, then pass
1987 * authenticator ctime back in *atimep (or 0 if time unavailable). Returns
1988 * krb5_error_code and kssl_err on error. A NULL authenticator
1989 * (authentp->length == 0) is not considered an error. Note that
1990 * kssl_check_authent() makes use of the KRB5 session key; you must call
1991 * kssl_sget_tkt() to get the key before calling this routine.
1d97c843 1992 */
0f113f3e
MC		 1993krb5_error_code kssl_check_authent(
1994 /*
1995 * IN
1996 */ KSSL_CTX *kssl_ctx,
1997 /*
1998 * IN
1999 */ krb5_data *authentp,
2000 /*
2001 * OUT
2002 */ krb5_timestamp *atimep,
2003 /*
2004 * OUT
2005 */ KSSL_ERR *kssl_err)
2006{
2007 krb5_error_code krb5rc = 0;
2008 KRB5_ENCDATA *dec_authent = NULL;
2009 KRB5_AUTHENTBODY *auth = NULL;
2010 krb5_enctype enctype;
2011 EVP_CIPHER_CTX ciph_ctx;
2012 const EVP_CIPHER *enc = NULL;
2013 unsigned char iv[EVP_MAX_IV_LENGTH];
2014 const unsigned char *p;
2015 unsigned char *unenc_authent;
2016 int outl, unencbufsize;
2017 struct tm tm_time, *tm_l, *tm_g;
2018 time_t now, tl, tg, tr, tz_offset;
2019
2020 EVP_CIPHER_CTX_init(&ciph_ctx);
2021 *atimep = 0;
2022 kssl_err_set(kssl_err, 0, "");
2023
2024# ifndef KRB5CHECKAUTH
2025 authentp = NULL;
2026# else
2027# if KRB5CHECKAUTH == 0
2028 authentp = NULL;
2029# endif
2030# endif /* KRB5CHECKAUTH */
2031
2032 if (authentp == NULL || authentp->length == 0)
2033 return 0;
2034
2035# ifdef KSSL_DEBUG
2036 {
45442167 2037 unsigned int ui;
0f113f3e
MC		 2038 fprintf(stderr, "kssl_check_authent: authenticator[%d]:\n",
2039 authentp->length);
2040 p = authentp->data;
2041 for (ui = 0; ui < authentp->length; ui++)
2042 fprintf(stderr, "%02x ", p[ui]);
2043 fprintf(stderr, "\n");
2044 }
2045# endif /* KSSL_DEBUG */
2046
2047 unencbufsize = 2 * authentp->length;
2048 if ((unenc_authent = calloc(1, unencbufsize)) == NULL) {
2049 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
2050 "Unable to allocate authenticator buffer.\n");
2051 krb5rc = KRB5KRB_ERR_GENERIC;
2052 goto err;
2053 }
2054
2055 p = (unsigned char *)authentp->data;
2056 if ((dec_authent = d2i_KRB5_ENCDATA(NULL, &p,
2057 (long)authentp->length)) == NULL) {
2058 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
2059 "Error decoding authenticator.\n");
2060 krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
2061 goto err;
2062 }
2063
2064 enctype = dec_authent->etype->data[0]; /* should = kssl_ctx->enctype */
2065# if !defined(KRB5_MIT_OLD11)
2066 switch (enctype) {
2067 case ENCTYPE_DES3_CBC_SHA1: /* EVP_des_ede3_cbc(); */
2068 case ENCTYPE_DES3_CBC_SHA:
2069 case ENCTYPE_DES3_CBC_RAW:
2070 krb5rc = 0; /* Skip, can't handle derived keys */
2071 goto err;
2072 }
2073# endif
2074 enc = kssl_map_enc(enctype);
16f8d4eb 2075 memset(iv, 0, sizeof(iv)); /* per RFC 1510 */
0f113f3e
MC		 2076
2077 if (enc == NULL) {
2078 /*
2079 * Disable kssl_check_authent for ENCTYPE_DES3_CBC_SHA1. This
2080 * enctype indicates the authenticator was encrypted using key-usage
2081 * derived keys which openssl cannot decrypt.
2082 */
2083 goto err;
2084 }
2085
2086 if (!EVP_CipherInit(&ciph_ctx, enc, kssl_ctx->key, iv, 0)) {
2087 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
2088 "EVP_CipherInit error decrypting authenticator.\n");
2089 krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
2090 goto err;
2091 }
2092 outl = dec_authent->cipher->length;
2093 if (!EVP_Cipher
2094 (&ciph_ctx, unenc_authent, dec_authent->cipher->data, outl)) {
2095 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
2096 "EVP_Cipher error decrypting authenticator.\n");
2097 krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
2098 goto err;
2099 }
2100 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2101
2102# ifdef KSSL_DEBUG
2103 {
2104 int padl;
2105 fprintf(stderr, "kssl_check_authent: decrypted authenticator[%d] =\n",
2106 outl);
2107 for (padl = 0; padl < outl; padl++)
2108 fprintf(stderr, "%02x ", unenc_authent[padl]);
2109 fprintf(stderr, "\n");
2110 }
2111# endif /* KSSL_DEBUG */
2112
2113 if ((p = kssl_skip_confound(enctype, unenc_authent)) == NULL) {
2114 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
2115 "confounded by authenticator.\n");
2116 krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
2117 goto err;
2118 }
2119 outl -= p - unenc_authent;
2120
2121 if ((auth = (KRB5_AUTHENTBODY *)d2i_KRB5_AUTHENT(NULL, &p,
2122 (long)outl)) == NULL) {
2123 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
2124 "Error decoding authenticator body.\n");
2125 krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
2126 goto err;
2127 }
2128
16f8d4eb 2129 memset(&tm_time, 0, sizeof(tm_tmime));
0f113f3e
MC		 2130 if (k_gmtime(auth->ctime, &tm_time) &&
2131 ((tr = mktime(&tm_time)) != (time_t)(-1))) {
2132 now = time(&now);
2133 tm_l = localtime(&now);
2134 tl = mktime(tm_l);
2135 tm_g = gmtime(&now);
2136 tg = mktime(tm_g);
2137 tz_offset = tg - tl;
2138
2139 *atimep = (krb5_timestamp)(tr - tz_offset);
2140 }
2141# ifdef KSSL_DEBUG
2142 fprintf(stderr, "kssl_check_authent: returns %d for client time ",
2143 *atimep);
2144 if (auth->ctime && auth->ctime->length && auth->ctime->data)
2145 fprintf(stderr, "%.*s\n", auth->ctime->length, auth->ctime->data);
2146 else
2147 fprintf(stderr, "NULL\n");
2148# endif /* KSSL_DEBUG */
2a1ef754
RL		 2149
2150 err:
0f113f3e
MC		 2151 if (auth)
2152 KRB5_AUTHENT_free((KRB5_AUTHENT *) auth);
2153 if (dec_authent)
2154 KRB5_ENCDATA_free(dec_authent);
2155 if (unenc_authent)
2156 free(unenc_authent);
2157 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2158 return krb5rc;
2159}
2160
2161/*
2162 * Replaces krb5_build_principal_ext(), with varargs length == 2 (svc, host),
2163 * because I don't know how to stub varargs. Returns krb5_error_code ==
2164 * ENOMEM on alloc error, otherwise passes back newly constructed principal,
2165 * which should be freed by caller.
1d97c843 2166 */
0f113f3e
MC		 2167krb5_error_code kssl_build_principal_2(
2168 /*
2169 * UPDATE
2170 */ krb5_context context,
2171 /*
2172 * OUT
2173 */ krb5_principal *princ,
2174 /*
2175 * IN
2176 */ int rlen, const char *realm,
2177 /*
2178 * IN
2179 */ int slen, const char *svc,
2180 /*
2181 * IN
2182 */ int hlen, const char *host)
2183{
2184 krb5_data *p_data = NULL;
2185 krb5_principal new_p = NULL;
2186 char *new_r = NULL;
2187
2188 if ((p_data = (krb5_data *)calloc(2, sizeof(krb5_data))) == NULL ||
2189 (new_p = (krb5_principal)calloc(1, sizeof(krb5_principal_data)))
2190 == NULL)
2191 goto err;
2192 new_p->length = 2;
2193 new_p->data = p_data;
2194
2195 if ((new_r = calloc(1, rlen + 1)) == NULL)
2196 goto err;
2197 memcpy(new_r, realm, rlen);
2198 krb5_princ_set_realm_length(context, new_p, rlen);
2199 krb5_princ_set_realm_data(context, new_p, new_r);
2200
2201 if ((new_p->data[0].data = calloc(1, slen + 1)) == NULL)
2202 goto err;
2203 memcpy(new_p->data[0].data, svc, slen);
2204 new_p->data[0].length = slen;
2205
2206 if ((new_p->data[1].data = calloc(1, hlen + 1)) == NULL)
2207 goto err;
2208 memcpy(new_p->data[1].data, host, hlen);
2209 new_p->data[1].length = hlen;
2210
2211 krb5_princ_type(context, new_p) = KRB5_NT_UNKNOWN;
2212 *princ = new_p;
2213 return 0;
2a1ef754
RL		 2214
2215 err:
0f113f3e
MC		 2216 if (new_p && new_p[0].data)
2217 free(new_p[0].data);
2218 if (new_p && new_p[1].data)
2219 free(new_p[1].data);
2220 if (new_p)
2221 free(new_p);
2222 if (new_r)
2223 free(new_r);
2224 return ENOMEM;
2225}
2a1ef754 2226
4f7a2ab8 2227void SSL_set0_kssl_ctx(SSL *s, KSSL_CTX *kctx)
0f113f3e
MC		 2228{
2229 s->kssl_ctx = kctx;
2230}
4f7a2ab8 2231
0f113f3e
MC		 2232KSSL_CTX *SSL_get0_kssl_ctx(SSL *s)
2233{
2234 return s->kssl_ctx;
2235}
4f7a2ab8
DSH		 2236
2237char *kssl_ctx_get0_client_princ(KSSL_CTX *kctx)
0f113f3e
MC		 2238{
2239 if (kctx)
2240 return kctx->client_princ;
2241 return NULL;
2242}
b0dc680f 2243
0f113f3e 2244#else /* !OPENSSL_NO_KRB5 */
b0dc680f 2245
0f113f3e
MC		 2246# if defined(PEDANTIC) || defined(OPENSSL_SYS_VMS)
2247static void *dummy = &dummy;
2248# endif
43fcc1b0 2249
0f113f3e 2250#endif /* !OPENSSL_NO_KRB5 */
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