1 /* ssl/kssl.c -*- mode: C; c-file-style: "eay" -*- */
2 /* Written by Vern Staats <staatsvr@asc.hpc.mil> for the OpenSSL project 2000.
4 /* ====================================================================
5 * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
19 * 3. All advertising materials mentioning features or use of this
20 * software must display the following acknowledgment:
21 * "This product includes software developed by the OpenSSL Project
22 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
25 * endorse or promote products derived from this software without
26 * prior written permission. For written permission, please contact
27 * licensing@OpenSSL.org.
29 * 5. Products derived from this software may not be called "OpenSSL"
30 * nor may "OpenSSL" appear in their names without prior written
31 * permission of the OpenSSL Project.
33 * 6. Redistributions of any form whatsoever must retain the following
35 * "This product includes software developed by the OpenSSL Project
36 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
39 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
40 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
41 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
42 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
43 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
44 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
45 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
46 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
47 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
48 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
49 * OF THE POSSIBILITY OF SUCH DAMAGE.
50 * ====================================================================
52 * This product includes cryptographic software written by Eric Young
53 * (eay@cryptsoft.com). This product includes software written by Tim
54 * Hudson (tjh@cryptsoft.com).
60 * ssl/kssl.c -- Routines to support (& debug) Kerberos5 auth for openssl
62 * 19990701 VRS Started.
63 * 200011?? Jeffrey Altman, Richard Levitte
64 * Generalized for Heimdal, Newer MIT, & Win32.
65 * Integrated into main OpenSSL 0.9.7 snapshots.
66 * 20010413 Simon Wilkinson, VRS
67 * Real RFC2712 KerberosWrapper replaces AP_REQ.
70 #include <openssl/opensslconf.h>
74 #define KRB5_PRIVATE 1
76 #include <openssl/ssl.h>
77 #include <openssl/evp.h>
78 #include <openssl/objects.h>
79 #include <openssl/krb5_asn.h>
82 #ifndef OPENSSL_NO_KRB5
85 #define ENOMEM KRB5KRB_ERR_GENERIC
89 * When OpenSSL is built on Windows, we do not want to require that
90 * the Kerberos DLLs be available in order for the OpenSSL DLLs to
91 * work. Therefore, all Kerberos routines are loaded at run time
92 * and we do not link to a .LIB file.
95 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32)
97 * The purpose of the following pre-processor statements is to provide
98 * compatibility with different releases of MIT Kerberos for Windows.
99 * All versions up to 1.2 used macros. But macros do not allow for
100 * a binary compatible interface for DLLs. Therefore, all macros are
101 * being replaced by function calls. The following code will allow
102 * an OpenSSL DLL built on Windows to work whether or not the macro
103 * or function form of the routines are utilized.
105 #ifdef krb5_cc_get_principal
106 #define NO_DEF_KRB5_CCACHE
107 #undef krb5_cc_get_principal
109 #define krb5_cc_get_principal kssl_krb5_cc_get_principal
111 #define krb5_free_data_contents kssl_krb5_free_data_contents
112 #define krb5_free_context kssl_krb5_free_context
113 #define krb5_auth_con_free kssl_krb5_auth_con_free
114 #define krb5_free_principal kssl_krb5_free_principal
115 #define krb5_mk_req_extended kssl_krb5_mk_req_extended
116 #define krb5_get_credentials kssl_krb5_get_credentials
117 #define krb5_cc_default kssl_krb5_cc_default
118 #define krb5_sname_to_principal kssl_krb5_sname_to_principal
119 #define krb5_init_context kssl_krb5_init_context
120 #define krb5_free_ticket kssl_krb5_free_ticket
121 #define krb5_rd_req kssl_krb5_rd_req
122 #define krb5_kt_default kssl_krb5_kt_default
123 #define krb5_kt_resolve kssl_krb5_kt_resolve
124 /* macros in mit 1.2.2 and earlier; functions in mit 1.2.3 and greater */
125 #ifndef krb5_kt_close
126 #define krb5_kt_close kssl_krb5_kt_close
127 #endif /* krb5_kt_close */
128 #ifndef krb5_kt_get_entry
129 #define krb5_kt_get_entry kssl_krb5_kt_get_entry
130 #endif /* krb5_kt_get_entry */
131 #define krb5_auth_con_init kssl_krb5_auth_con_init
133 #define krb5_principal_compare kssl_krb5_principal_compare
134 #define krb5_decrypt_tkt_part kssl_krb5_decrypt_tkt_part
135 #define krb5_timeofday kssl_krb5_timeofday
136 #define krb5_rc_default kssl_krb5_rc_default
138 #ifdef krb5_rc_initialize
139 #undef krb5_rc_initialize
141 #define krb5_rc_initialize kssl_krb5_rc_initialize
143 #ifdef krb5_rc_get_lifespan
144 #undef krb5_rc_get_lifespan
146 #define krb5_rc_get_lifespan kssl_krb5_rc_get_lifespan
148 #ifdef krb5_rc_destroy
149 #undef krb5_rc_destroy
151 #define krb5_rc_destroy kssl_krb5_rc_destroy
153 #define valid_cksumtype kssl_valid_cksumtype
154 #define krb5_checksum_size kssl_krb5_checksum_size
155 #define krb5_kt_free_entry kssl_krb5_kt_free_entry
156 #define krb5_auth_con_setrcache kssl_krb5_auth_con_setrcache
157 #define krb5_auth_con_getrcache kssl_krb5_auth_con_getrcache
158 #define krb5_get_server_rcache kssl_krb5_get_server_rcache
160 /* Prototypes for built in stubs */
161 void kssl_krb5_free_data_contents(krb5_context, krb5_data *);
162 void kssl_krb5_free_principal(krb5_context, krb5_principal );
163 krb5_error_code kssl_krb5_kt_resolve(krb5_context,
166 krb5_error_code kssl_krb5_kt_default(krb5_context,
168 krb5_error_code kssl_krb5_free_ticket(krb5_context, krb5_ticket *);
169 krb5_error_code kssl_krb5_rd_req(krb5_context, krb5_auth_context *,
170 krb5_const krb5_data *,
171 krb5_const_principal, krb5_keytab,
172 krb5_flags *,krb5_ticket **);
174 krb5_boolean kssl_krb5_principal_compare(krb5_context, krb5_const_principal,
175 krb5_const_principal);
176 krb5_error_code kssl_krb5_mk_req_extended(krb5_context,
178 krb5_const krb5_flags,
182 krb5_error_code kssl_krb5_init_context(krb5_context *);
183 void kssl_krb5_free_context(krb5_context);
184 krb5_error_code kssl_krb5_cc_default(krb5_context,krb5_ccache *);
185 krb5_error_code kssl_krb5_sname_to_principal(krb5_context,
190 krb5_error_code kssl_krb5_get_credentials(krb5_context,
191 krb5_const krb5_flags,
195 krb5_error_code kssl_krb5_auth_con_init(krb5_context,
196 krb5_auth_context *);
197 krb5_error_code kssl_krb5_cc_get_principal(krb5_context context,
199 krb5_principal *principal);
200 krb5_error_code kssl_krb5_auth_con_free(krb5_context,krb5_auth_context);
201 size_t kssl_krb5_checksum_size(krb5_context context,krb5_cksumtype ctype);
202 krb5_boolean kssl_valid_cksumtype(krb5_cksumtype ctype);
203 krb5_error_code krb5_kt_free_entry(krb5_context,krb5_keytab_entry FAR * );
204 krb5_error_code kssl_krb5_auth_con_setrcache(krb5_context,
207 krb5_error_code kssl_krb5_get_server_rcache(krb5_context,
208 krb5_const krb5_data *,
210 krb5_error_code kssl_krb5_auth_con_getrcache(krb5_context,
214 /* Function pointers (almost all Kerberos functions are _stdcall) */
215 static void (_stdcall *p_krb5_free_data_contents)(krb5_context, krb5_data *)
217 static void (_stdcall *p_krb5_free_principal)(krb5_context, krb5_principal )
219 static krb5_error_code(_stdcall *p_krb5_kt_resolve)
220 (krb5_context, krb5_const char *, krb5_keytab *)=NULL;
221 static krb5_error_code (_stdcall *p_krb5_kt_default)(krb5_context,
223 static krb5_error_code (_stdcall *p_krb5_free_ticket)(krb5_context,
225 static krb5_error_code (_stdcall *p_krb5_rd_req)(krb5_context,
227 krb5_const krb5_data *,
228 krb5_const_principal,
229 krb5_keytab, krb5_flags *,
230 krb5_ticket **)=NULL;
231 static krb5_error_code (_stdcall *p_krb5_mk_req_extended)
232 (krb5_context, krb5_auth_context *,
233 krb5_const krb5_flags, krb5_data *, krb5_creds *,
235 static krb5_error_code (_stdcall *p_krb5_init_context)(krb5_context *)=NULL;
236 static void (_stdcall *p_krb5_free_context)(krb5_context)=NULL;
237 static krb5_error_code (_stdcall *p_krb5_cc_default)(krb5_context,
239 static krb5_error_code (_stdcall *p_krb5_sname_to_principal)
240 (krb5_context, krb5_const char *, krb5_const char *,
241 krb5_int32, krb5_principal *)=NULL;
242 static krb5_error_code (_stdcall *p_krb5_get_credentials)
243 (krb5_context, krb5_const krb5_flags, krb5_ccache,
244 krb5_creds *, krb5_creds **)=NULL;
245 static krb5_error_code (_stdcall *p_krb5_auth_con_init)
246 (krb5_context, krb5_auth_context *)=NULL;
247 static krb5_error_code (_stdcall *p_krb5_cc_get_principal)
248 (krb5_context context, krb5_ccache cache,
249 krb5_principal *principal)=NULL;
250 static krb5_error_code (_stdcall *p_krb5_auth_con_free)
251 (krb5_context, krb5_auth_context)=NULL;
252 static krb5_error_code (_stdcall *p_krb5_decrypt_tkt_part)
253 (krb5_context, krb5_const krb5_keyblock *,
255 static krb5_error_code (_stdcall *p_krb5_timeofday)
256 (krb5_context context, krb5_int32 *timeret)=NULL;
257 static krb5_error_code (_stdcall *p_krb5_rc_default)
258 (krb5_context context, krb5_rcache *rc)=NULL;
259 static krb5_error_code (_stdcall *p_krb5_rc_initialize)
260 (krb5_context context, krb5_rcache rc,
261 krb5_deltat lifespan)=NULL;
262 static krb5_error_code (_stdcall *p_krb5_rc_get_lifespan)
263 (krb5_context context, krb5_rcache rc,
264 krb5_deltat *lifespan)=NULL;
265 static krb5_error_code (_stdcall *p_krb5_rc_destroy)
266 (krb5_context context, krb5_rcache rc)=NULL;
267 static krb5_boolean (_stdcall *p_krb5_principal_compare)
268 (krb5_context, krb5_const_principal, krb5_const_principal)=NULL;
269 static size_t (_stdcall *p_krb5_checksum_size)(krb5_context context,krb5_cksumtype ctype)=NULL;
270 static krb5_boolean (_stdcall *p_valid_cksumtype)(krb5_cksumtype ctype)=NULL;
271 static krb5_error_code (_stdcall *p_krb5_kt_free_entry)
272 (krb5_context,krb5_keytab_entry * )=NULL;
273 static krb5_error_code (_stdcall * p_krb5_auth_con_setrcache)(krb5_context,
276 static krb5_error_code (_stdcall * p_krb5_get_server_rcache)(krb5_context,
277 krb5_const krb5_data *,
279 static krb5_error_code (* p_krb5_auth_con_getrcache)(krb5_context,
282 static krb5_error_code (_stdcall * p_krb5_kt_close)(krb5_context context,
283 krb5_keytab keytab)=NULL;
284 static krb5_error_code (_stdcall * p_krb5_kt_get_entry)(krb5_context context,
286 krb5_const_principal principal, krb5_kvno vno,
287 krb5_enctype enctype, krb5_keytab_entry *entry)=NULL;
288 static int krb5_loaded = 0; /* only attempt to initialize func ptrs once */
290 /* Function to Load the Kerberos 5 DLL and initialize function pointers */
297 hKRB5_32 = LoadLibrary(TEXT("KRB5_32"));
301 (FARPROC) p_krb5_free_data_contents =
302 GetProcAddress( hKRB5_32, "krb5_free_data_contents" );
303 (FARPROC) p_krb5_free_context =
304 GetProcAddress( hKRB5_32, "krb5_free_context" );
305 (FARPROC) p_krb5_auth_con_free =
306 GetProcAddress( hKRB5_32, "krb5_auth_con_free" );
307 (FARPROC) p_krb5_free_principal =
308 GetProcAddress( hKRB5_32, "krb5_free_principal" );
309 (FARPROC) p_krb5_mk_req_extended =
310 GetProcAddress( hKRB5_32, "krb5_mk_req_extended" );
311 (FARPROC) p_krb5_get_credentials =
312 GetProcAddress( hKRB5_32, "krb5_get_credentials" );
313 (FARPROC) p_krb5_cc_get_principal =
314 GetProcAddress( hKRB5_32, "krb5_cc_get_principal" );
315 (FARPROC) p_krb5_cc_default =
316 GetProcAddress( hKRB5_32, "krb5_cc_default" );
317 (FARPROC) p_krb5_sname_to_principal =
318 GetProcAddress( hKRB5_32, "krb5_sname_to_principal" );
319 (FARPROC) p_krb5_init_context =
320 GetProcAddress( hKRB5_32, "krb5_init_context" );
321 (FARPROC) p_krb5_free_ticket =
322 GetProcAddress( hKRB5_32, "krb5_free_ticket" );
323 (FARPROC) p_krb5_rd_req =
324 GetProcAddress( hKRB5_32, "krb5_rd_req" );
325 (FARPROC) p_krb5_principal_compare =
326 GetProcAddress( hKRB5_32, "krb5_principal_compare" );
327 (FARPROC) p_krb5_decrypt_tkt_part =
328 GetProcAddress( hKRB5_32, "krb5_decrypt_tkt_part" );
329 (FARPROC) p_krb5_timeofday =
330 GetProcAddress( hKRB5_32, "krb5_timeofday" );
331 (FARPROC) p_krb5_rc_default =
332 GetProcAddress( hKRB5_32, "krb5_rc_default" );
333 (FARPROC) p_krb5_rc_initialize =
334 GetProcAddress( hKRB5_32, "krb5_rc_initialize" );
335 (FARPROC) p_krb5_rc_get_lifespan =
336 GetProcAddress( hKRB5_32, "krb5_rc_get_lifespan" );
337 (FARPROC) p_krb5_rc_destroy =
338 GetProcAddress( hKRB5_32, "krb5_rc_destroy" );
339 (FARPROC) p_krb5_kt_default =
340 GetProcAddress( hKRB5_32, "krb5_kt_default" );
341 (FARPROC) p_krb5_kt_resolve =
342 GetProcAddress( hKRB5_32, "krb5_kt_resolve" );
343 (FARPROC) p_krb5_auth_con_init =
344 GetProcAddress( hKRB5_32, "krb5_auth_con_init" );
345 (FARPROC) p_valid_cksumtype =
346 GetProcAddress( hKRB5_32, "valid_cksumtype" );
347 (FARPROC) p_krb5_checksum_size =
348 GetProcAddress( hKRB5_32, "krb5_checksum_size" );
349 (FARPROC) p_krb5_kt_free_entry =
350 GetProcAddress( hKRB5_32, "krb5_kt_free_entry" );
351 (FARPROC) p_krb5_auth_con_setrcache =
352 GetProcAddress( hKRB5_32, "krb5_auth_con_setrcache" );
353 (FARPROC) p_krb5_get_server_rcache =
354 GetProcAddress( hKRB5_32, "krb5_get_server_rcache" );
355 (FARPROC) p_krb5_auth_con_getrcache =
356 GetProcAddress( hKRB5_32, "krb5_auth_con_getrcache" );
357 (FARPROC) p_krb5_kt_close =
358 GetProcAddress( hKRB5_32, "krb5_kt_close" );
359 (FARPROC) p_krb5_kt_get_entry =
360 GetProcAddress( hKRB5_32, "krb5_kt_get_entry" );
363 /* Stubs for each function to be dynamicly loaded */
365 kssl_krb5_free_data_contents(krb5_context CO, krb5_data * data)
370 if ( p_krb5_free_data_contents )
371 p_krb5_free_data_contents(CO,data);
375 kssl_krb5_mk_req_extended (krb5_context CO,
376 krb5_auth_context * pACO,
377 krb5_const krb5_flags F,
385 if ( p_krb5_mk_req_extended )
386 return(p_krb5_mk_req_extended(CO,pACO,F,pD1,pC,pD2));
388 return KRB5KRB_ERR_GENERIC;
391 kssl_krb5_auth_con_init(krb5_context CO,
392 krb5_auth_context * pACO)
397 if ( p_krb5_auth_con_init )
398 return(p_krb5_auth_con_init(CO,pACO));
400 return KRB5KRB_ERR_GENERIC;
403 kssl_krb5_auth_con_free (krb5_context CO,
404 krb5_auth_context ACO)
409 if ( p_krb5_auth_con_free )
410 return(p_krb5_auth_con_free(CO,ACO));
412 return KRB5KRB_ERR_GENERIC;
415 kssl_krb5_get_credentials(krb5_context CO,
416 krb5_const krb5_flags F,
424 if ( p_krb5_get_credentials )
425 return(p_krb5_get_credentials(CO,F,CC,pCR,ppCR));
427 return KRB5KRB_ERR_GENERIC;
430 kssl_krb5_sname_to_principal(krb5_context CO,
431 krb5_const char * pC1,
432 krb5_const char * pC2,
434 krb5_principal * pPR)
439 if ( p_krb5_sname_to_principal )
440 return(p_krb5_sname_to_principal(CO,pC1,pC2,I,pPR));
442 return KRB5KRB_ERR_GENERIC;
446 kssl_krb5_cc_default(krb5_context CO,
452 if ( p_krb5_cc_default )
453 return(p_krb5_cc_default(CO,pCC));
455 return KRB5KRB_ERR_GENERIC;
459 kssl_krb5_init_context(krb5_context * pCO)
464 if ( p_krb5_init_context )
465 return(p_krb5_init_context(pCO));
467 return KRB5KRB_ERR_GENERIC;
471 kssl_krb5_free_context(krb5_context CO)
476 if ( p_krb5_free_context )
477 p_krb5_free_context(CO);
481 kssl_krb5_free_principal(krb5_context c, krb5_principal p)
486 if ( p_krb5_free_principal )
487 p_krb5_free_principal(c,p);
491 kssl_krb5_kt_resolve(krb5_context con,
492 krb5_const char * sz,
498 if ( p_krb5_kt_resolve )
499 return(p_krb5_kt_resolve(con,sz,kt));
501 return KRB5KRB_ERR_GENERIC;
505 kssl_krb5_kt_default(krb5_context con,
511 if ( p_krb5_kt_default )
512 return(p_krb5_kt_default(con,kt));
514 return KRB5KRB_ERR_GENERIC;
518 kssl_krb5_free_ticket(krb5_context con,
524 if ( p_krb5_free_ticket )
525 return(p_krb5_free_ticket(con,kt));
527 return KRB5KRB_ERR_GENERIC;
531 kssl_krb5_rd_req(krb5_context con, krb5_auth_context * pacon,
532 krb5_const krb5_data * data,
533 krb5_const_principal princ, krb5_keytab keytab,
534 krb5_flags * flags, krb5_ticket ** pptkt)
540 return(p_krb5_rd_req(con,pacon,data,princ,keytab,flags,pptkt));
542 return KRB5KRB_ERR_GENERIC;
546 krb5_principal_compare(krb5_context con, krb5_const_principal princ1,
547 krb5_const_principal princ2)
552 if ( p_krb5_principal_compare )
553 return(p_krb5_principal_compare(con,princ1,princ2));
555 return KRB5KRB_ERR_GENERIC;
559 krb5_decrypt_tkt_part(krb5_context con, krb5_const krb5_keyblock *keys,
565 if ( p_krb5_decrypt_tkt_part )
566 return(p_krb5_decrypt_tkt_part(con,keys,ticket));
568 return KRB5KRB_ERR_GENERIC;
572 krb5_timeofday(krb5_context con, krb5_int32 *timeret)
577 if ( p_krb5_timeofday )
578 return(p_krb5_timeofday(con,timeret));
580 return KRB5KRB_ERR_GENERIC;
584 krb5_rc_default(krb5_context con, krb5_rcache *rc)
589 if ( p_krb5_rc_default )
590 return(p_krb5_rc_default(con,rc));
592 return KRB5KRB_ERR_GENERIC;
596 krb5_rc_initialize(krb5_context con, krb5_rcache rc, krb5_deltat lifespan)
601 if ( p_krb5_rc_initialize )
602 return(p_krb5_rc_initialize(con, rc, lifespan));
604 return KRB5KRB_ERR_GENERIC;
608 krb5_rc_get_lifespan(krb5_context con, krb5_rcache rc, krb5_deltat *lifespanp)
613 if ( p_krb5_rc_get_lifespan )
614 return(p_krb5_rc_get_lifespan(con, rc, lifespanp));
616 return KRB5KRB_ERR_GENERIC;
620 krb5_rc_destroy(krb5_context con, krb5_rcache rc)
625 if ( p_krb5_rc_destroy )
626 return(p_krb5_rc_destroy(con, rc));
628 return KRB5KRB_ERR_GENERIC;
632 krb5_checksum_size(krb5_context context,krb5_cksumtype ctype)
637 if ( p_krb5_checksum_size )
638 return(p_krb5_checksum_size(context, ctype));
640 return KRB5KRB_ERR_GENERIC;
644 valid_cksumtype(krb5_cksumtype ctype)
649 if ( p_valid_cksumtype )
650 return(p_valid_cksumtype(ctype));
652 return KRB5KRB_ERR_GENERIC;
656 krb5_kt_free_entry(krb5_context con,krb5_keytab_entry * entry)
661 if ( p_krb5_kt_free_entry )
662 return(p_krb5_kt_free_entry(con,entry));
664 return KRB5KRB_ERR_GENERIC;
667 /* Structure definitions */
668 #ifndef NO_DEF_KRB5_CCACHE
670 #define krb5_x(ptr,args) ((ptr)?((*(ptr)) args):(abort(),1))
671 #define krb5_xc(ptr,args) ((ptr)?((*(ptr)) args):(abort(),(char*)0))
674 typedef krb5_pointer krb5_cc_cursor; /* cursor for sequential lookup */
676 typedef struct _krb5_ccache
679 struct _krb5_cc_ops FAR *ops;
683 typedef struct _krb5_cc_ops
687 char * (KRB5_CALLCONV *get_name)
688 (krb5_context, krb5_ccache);
689 krb5_error_code (KRB5_CALLCONV *resolve)
690 (krb5_context, krb5_ccache *, const char *);
691 krb5_error_code (KRB5_CALLCONV *gen_new)
692 (krb5_context, krb5_ccache *);
693 krb5_error_code (KRB5_CALLCONV *init)
694 (krb5_context, krb5_ccache, krb5_principal);
695 krb5_error_code (KRB5_CALLCONV *destroy)
696 (krb5_context, krb5_ccache);
697 krb5_error_code (KRB5_CALLCONV *close)
698 (krb5_context, krb5_ccache);
699 krb5_error_code (KRB5_CALLCONV *store)
700 (krb5_context, krb5_ccache, krb5_creds *);
701 krb5_error_code (KRB5_CALLCONV *retrieve)
702 (krb5_context, krb5_ccache,
703 krb5_flags, krb5_creds *, krb5_creds *);
704 krb5_error_code (KRB5_CALLCONV *get_princ)
705 (krb5_context, krb5_ccache, krb5_principal *);
706 krb5_error_code (KRB5_CALLCONV *get_first)
707 (krb5_context, krb5_ccache, krb5_cc_cursor *);
708 krb5_error_code (KRB5_CALLCONV *get_next)
709 (krb5_context, krb5_ccache,
710 krb5_cc_cursor *, krb5_creds *);
711 krb5_error_code (KRB5_CALLCONV *end_get)
712 (krb5_context, krb5_ccache, krb5_cc_cursor *);
713 krb5_error_code (KRB5_CALLCONV *remove_cred)
714 (krb5_context, krb5_ccache,
715 krb5_flags, krb5_creds *);
716 krb5_error_code (KRB5_CALLCONV *set_flags)
717 (krb5_context, krb5_ccache, krb5_flags);
719 #endif /* NO_DEF_KRB5_CCACHE */
722 kssl_krb5_cc_get_principal
723 (krb5_context context, krb5_ccache cache,
724 krb5_principal *principal)
726 if ( p_krb5_cc_get_principal )
727 return(p_krb5_cc_get_principal(context,cache,principal));
730 ((cache)->ops->get_princ,(context, cache, principal)));
734 kssl_krb5_auth_con_setrcache(krb5_context con, krb5_auth_context acon,
737 if ( p_krb5_auth_con_setrcache )
738 return(p_krb5_auth_con_setrcache(con,acon,rcache));
740 return KRB5KRB_ERR_GENERIC;
744 kssl_krb5_get_server_rcache(krb5_context con, krb5_const krb5_data * data,
745 krb5_rcache * rcache)
747 if ( p_krb5_get_server_rcache )
748 return(p_krb5_get_server_rcache(con,data,rcache));
750 return KRB5KRB_ERR_GENERIC;
754 kssl_krb5_auth_con_getrcache(krb5_context con, krb5_auth_context acon,
755 krb5_rcache * prcache)
757 if ( p_krb5_auth_con_getrcache )
758 return(p_krb5_auth_con_getrcache(con,acon, prcache));
760 return KRB5KRB_ERR_GENERIC;
764 kssl_krb5_kt_close(krb5_context context, krb5_keytab keytab)
766 if ( p_krb5_kt_close )
767 return(p_krb5_kt_close(context,keytab));
769 return KRB5KRB_ERR_GENERIC;
773 kssl_krb5_kt_get_entry(krb5_context context, krb5_keytab keytab,
774 krb5_const_principal principal, krb5_kvno vno,
775 krb5_enctype enctype, krb5_keytab_entry *entry)
777 if ( p_krb5_kt_get_entry )
778 return(p_krb5_kt_get_entry(context,keytab,principal,vno,enctype,entry));
780 return KRB5KRB_ERR_GENERIC;
782 #endif /* OPENSSL_SYS_WINDOWS || OPENSSL_SYS_WIN32 */
785 /* memory allocation functions for non-temporary storage
786 * (e.g. stuff that gets saved into the kssl context) */
787 static void* kssl_calloc(size_t nmemb, size_t size)
791 p=OPENSSL_malloc(nmemb*size);
793 memset(p, 0, nmemb*size);
798 #define kssl_malloc(size) OPENSSL_malloc((size))
799 #define kssl_realloc(ptr, size) OPENSSL_realloc(ptr, size)
800 #define kssl_free(ptr) OPENSSL_free((ptr))
804 *kstring(char *string)
806 static char *null = "[NULL]";
808 return ((string == NULL)? null: string);
811 /* Given KRB5 enctype (basically DES or 3DES),
812 * return closest match openssl EVP_ encryption algorithm.
813 * Return NULL for unknown or problematic (krb5_dk_encrypt) enctypes.
814 * Assume ENCTYPE_*_RAW (krb5_raw_encrypt) are OK.
817 kssl_map_enc(krb5_enctype enctype)
821 case ENCTYPE_DES_HMAC_SHA1: /* EVP_des_cbc(); */
822 case ENCTYPE_DES_CBC_CRC:
823 case ENCTYPE_DES_CBC_MD4:
824 case ENCTYPE_DES_CBC_MD5:
825 case ENCTYPE_DES_CBC_RAW:
826 return EVP_des_cbc();
828 case ENCTYPE_DES3_CBC_SHA1: /* EVP_des_ede3_cbc(); */
829 case ENCTYPE_DES3_CBC_SHA:
830 case ENCTYPE_DES3_CBC_RAW:
831 return EVP_des_ede3_cbc();
833 default: return NULL;
839 /* Return true:1 if p "looks like" the start of the real authenticator
840 * described in kssl_skip_confound() below. The ASN.1 pattern is
841 * "62 xx 30 yy" (APPLICATION-2, SEQUENCE), where xx-yy =~ 2, and
842 * xx and yy are possibly multi-byte length fields.
844 static int kssl_test_confound(unsigned char *p)
849 if (*p++ != 0x62) return 0;
850 if (*p > 0x82) return 0;
852 case 0x82: p++; xx = (*p++ << 8); xx += *p++; break;
853 case 0x81: p++; xx = *p++; break;
855 default: xx = *p++; break;
857 if (*p++ != 0x30) return 0;
858 if (*p > 0x82) return 0;
860 case 0x82: p++; len+=2; yy = (*p++ << 8); yy += *p++; break;
861 case 0x81: p++; len++; yy = *p++; break;
863 default: yy = *p++; break;
866 return (xx - len == yy)? 1: 0;
869 /* Allocate, fill, and return cksumlens array of checksum lengths.
870 * This array holds just the unique elements from the krb5_cksumarray[].
871 * array[n] == 0 signals end of data.
873 * The krb5_cksumarray[] was an internal variable that has since been
874 * replaced by a more general method for storing the data. It should
875 * not be used. Instead we use real API calls and make a guess for
876 * what the highest assigned CKSUMTYPE_ constant is. As of 1.2.2
877 * it is 0x000c (CKSUMTYPE_HMAC_SHA1_DES3). So we will use 0x0010.
879 static size_t *populate_cksumlens(void)
882 static size_t *cklens = NULL;
884 #ifdef KRB5_MIT_OLD11
888 #endif /* KRB5_MIT_OLD11 */
891 if (!cklens && !(cklens = (size_t *) calloc(sizeof(int),n+1))) return NULL;
893 for (i=0; i < n; i++) {
894 if (!valid_cksumtype(i)) continue; /* array has holes */
895 for (j=0; j < n; j++) {
896 if (cklens[j] == 0) {
897 cklens[j] = krb5_checksum_size(NULL,i);
898 break; /* krb5 elem was new: add */
900 if (cklens[j] == krb5_checksum_size(NULL,i)) {
901 break; /* ignore duplicate elements */
905 #endif /* KRB5CHECKAUTH */
911 * Return pointer to start of real authenticator within authenticator, or
912 * return NULL on error.
913 * Decrypted authenticator looks like this:
914 * [0 or 8 byte confounder] [4-24 byte checksum] [real authent'r]
915 * This hackery wouldn't be necessary if MIT KRB5 1.0.6 had the
916 * krb5_auth_con_getcksumtype() function advertised in its krb5.h.
918 unsigned char *kssl_skip_confound(krb5_enctype etype, unsigned char *a)
922 static size_t *cksumlens = NULL;
923 unsigned char *test_auth;
925 conlen = (etype)? 8: 0;
927 if (!cksumlens && !(cksumlens = populate_cksumlens())) return NULL;
928 for (i=0; (cklen = cksumlens[i]) != 0; i++)
930 test_auth = a + conlen + cklen;
931 if (kssl_test_confound(test_auth)) return test_auth;
938 /* Set kssl_err error info when reason text is a simple string
939 * kssl_err = struct { int reason; char text[KSSL_ERR_MAX+1]; }
942 kssl_err_set(KSSL_ERR *kssl_err, int reason, char *text)
944 if (kssl_err == NULL) return;
946 kssl_err->reason = reason;
947 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX, "%s", text);
952 /* Display contents of krb5_data struct, for debugging
955 print_krb5_data(char *label, krb5_data *kdata)
959 fprintf(stderr,"%s[%d] ", label, kdata->length);
960 for (i=0; i < (int)kdata->length; i++)
962 if (0 && isprint((int) kdata->data[i]))
963 fprintf(stderr, "%c ", kdata->data[i]);
965 fprintf(stderr, "%02x ", (unsigned char) kdata->data[i]);
967 fprintf(stderr,"\n");
971 /* Display contents of krb5_authdata struct, for debugging
974 print_krb5_authdata(char *label, krb5_authdata **adata)
978 fprintf(stderr,"%s, authdata==0\n", label);
981 fprintf(stderr,"%s [%p]\n", label, (void *)adata);
985 fprintf(stderr,"%s[at%d:%d] ", label, adata->ad_type, adata->length);
986 for (i=0; i < adata->length; i++)
988 fprintf(stderr,(isprint(adata->contents[i]))? "%c ": "%02x",
991 fprintf(stderr,"\n");
997 /* Display contents of krb5_keyblock struct, for debugging
1000 print_krb5_keyblock(char *label, krb5_keyblock *keyblk)
1006 fprintf(stderr,"%s, keyblk==0\n", label);
1010 fprintf(stderr,"%s\n\t[et%d:%d]: ", label, keyblk->keytype,
1011 keyblk->keyvalue->length);
1012 for (i=0; i < (int)keyblk->keyvalue->length; i++)
1014 fprintf(stderr,"%02x",(unsigned char *)(keyblk->keyvalue->contents)[i]);
1016 fprintf(stderr,"\n");
1018 fprintf(stderr,"%s\n\t[et%d:%d]: ", label, keyblk->enctype, keyblk->length);
1019 for (i=0; i < (int)keyblk->length; i++)
1021 fprintf(stderr,"%02x",keyblk->contents[i]);
1023 fprintf(stderr,"\n");
1028 /* Display contents of krb5_principal_data struct, for debugging
1029 * (krb5_principal is typedef'd == krb5_principal_data *)
1032 print_krb5_princ(char *label, krb5_principal_data *princ)
1036 fprintf(stderr,"%s principal Realm: ", label);
1037 if (princ == NULL) return;
1038 for (ui=0; ui < (int)princ->realm.length; ui++) putchar(princ->realm.data[ui]);
1039 fprintf(stderr," (nametype %d) has %d strings:\n", princ->type,princ->length);
1040 for (i=0; i < (int)princ->length; i++)
1042 fprintf(stderr,"\t%d [%d]: ", i, princ->data[i].length);
1043 for (uj=0; uj < (int)princ->data[i].length; uj++) {
1044 putchar(princ->data[i].data[uj]);
1046 fprintf(stderr,"\n");
1052 /*- Given krb5 service (typically "kssl") and hostname in kssl_ctx,
1053 * Return encrypted Kerberos ticket for service @ hostname.
1054 * If authenp is non-NULL, also return encrypted authenticator,
1055 * whose data should be freed by caller.
1056 * (Originally was: Create Kerberos AP_REQ message for SSL Client.)
1058 * 19990628 VRS Started; Returns Kerberos AP_REQ message.
1059 * 20010409 VRS Modified for RFC2712; Returns enc tkt.
1060 * 20010606 VRS May also return optional authenticator.
1063 kssl_cget_tkt( /* UPDATE */ KSSL_CTX *kssl_ctx,
1064 /* OUT */ krb5_data **enc_ticketp,
1065 /* UPDATE */ krb5_data *authenp,
1066 /* OUT */ KSSL_ERR *kssl_err)
1068 krb5_error_code krb5rc = KRB5KRB_ERR_GENERIC;
1069 krb5_context krb5context = NULL;
1070 krb5_auth_context krb5auth_context = NULL;
1071 krb5_ccache krb5ccdef = NULL;
1072 krb5_creds krb5creds, *krb5credsp = NULL;
1073 krb5_data krb5_app_req;
1075 kssl_err_set(kssl_err, 0, "");
1076 memset((char *)&krb5creds, 0, sizeof(krb5creds));
1080 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1081 "No kssl_ctx defined.\n");
1084 else if (!kssl_ctx->service_host)
1086 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1087 "kssl_ctx service_host undefined.\n");
1091 if ((krb5rc = krb5_init_context(&krb5context)) != 0)
1093 BIO_snprintf(kssl_err->text,KSSL_ERR_MAX,
1094 "krb5_init_context() fails: %d\n", krb5rc);
1095 kssl_err->reason = SSL_R_KRB5_C_INIT;
1099 if ((krb5rc = krb5_sname_to_principal(krb5context,
1100 kssl_ctx->service_host,
1101 (kssl_ctx->service_name)? kssl_ctx->service_name: KRB5SVC,
1102 KRB5_NT_SRV_HST, &krb5creds.server)) != 0)
1104 BIO_snprintf(kssl_err->text,KSSL_ERR_MAX,
1105 "krb5_sname_to_principal() fails for %s/%s\n",
1106 kssl_ctx->service_host,
1107 (kssl_ctx->service_name)? kssl_ctx->service_name:
1109 kssl_err->reason = SSL_R_KRB5_C_INIT;
1113 if ((krb5rc = krb5_cc_default(krb5context, &krb5ccdef)) != 0)
1115 kssl_err_set(kssl_err, SSL_R_KRB5_C_CC_PRINC,
1116 "krb5_cc_default fails.\n");
1120 if ((krb5rc = krb5_cc_get_principal(krb5context, krb5ccdef,
1121 &krb5creds.client)) != 0)
1123 kssl_err_set(kssl_err, SSL_R_KRB5_C_CC_PRINC,
1124 "krb5_cc_get_principal() fails.\n");
1128 if ((krb5rc = krb5_get_credentials(krb5context, 0, krb5ccdef,
1129 &krb5creds, &krb5credsp)) != 0)
1131 kssl_err_set(kssl_err, SSL_R_KRB5_C_GET_CRED,
1132 "krb5_get_credentials() fails.\n");
1136 *enc_ticketp = &krb5credsp->ticket;
1138 kssl_ctx->enctype = krb5credsp->session.keytype;
1140 kssl_ctx->enctype = krb5credsp->keyblock.enctype;
1143 krb5rc = KRB5KRB_ERR_GENERIC;
1144 /* caller should free data of krb5_app_req */
1145 /* 20010406 VRS deleted for real KerberosWrapper
1146 * 20010605 VRS reinstated to offer Authenticator to KerberosWrapper
1148 krb5_app_req.length = 0;
1151 krb5_data krb5in_data;
1152 const unsigned char *p;
1154 KRB5_APREQBODY *ap_req;
1156 authenp->length = 0;
1157 krb5in_data.data = NULL;
1158 krb5in_data.length = 0;
1159 if ((krb5rc = krb5_mk_req_extended(krb5context,
1160 &krb5auth_context, 0, &krb5in_data, krb5credsp,
1161 &krb5_app_req)) != 0)
1163 kssl_err_set(kssl_err, SSL_R_KRB5_C_MK_REQ,
1164 "krb5_mk_req_extended() fails.\n");
1168 arlen = krb5_app_req.length;
1169 p = (unsigned char *)krb5_app_req.data;
1170 ap_req = (KRB5_APREQBODY *) d2i_KRB5_APREQ(NULL, &p, arlen);
1173 authenp->length = i2d_KRB5_ENCDATA(
1174 ap_req->authenticator, NULL);
1175 if (authenp->length &&
1176 (authenp->data = malloc(authenp->length)))
1178 unsigned char *adp = (unsigned char *)authenp->data;
1179 authenp->length = i2d_KRB5_ENCDATA(
1180 ap_req->authenticator, &adp);
1184 if (ap_req) KRB5_APREQ_free((KRB5_APREQ *) ap_req);
1185 if (krb5_app_req.length)
1186 kssl_krb5_free_data_contents(krb5context,&krb5_app_req);
1189 if (kssl_ctx_setkey(kssl_ctx, &krb5credsp->session))
1191 kssl_err_set(kssl_err, SSL_R_KRB5_C_INIT,
1192 "kssl_ctx_setkey() fails.\n");
1195 if (kssl_ctx_setkey(kssl_ctx, &krb5credsp->keyblock))
1197 kssl_err_set(kssl_err, SSL_R_KRB5_C_INIT,
1198 "kssl_ctx_setkey() fails.\n");
1205 kssl_ctx_show(kssl_ctx);
1206 #endif /* KSSL_DEBUG */
1208 if (krb5creds.client) krb5_free_principal(krb5context,
1210 if (krb5creds.server) krb5_free_principal(krb5context,
1212 if (krb5auth_context) krb5_auth_con_free(krb5context,
1214 if (krb5context) krb5_free_context(krb5context);
1220 * Given d2i_-decoded asn1ticket, allocate and return a new krb5_ticket.
1221 * Return Kerberos error code and kssl_err struct on error.
1222 * Allocates krb5_ticket and krb5_principal; caller should free these.
1224 * 20010410 VRS Implemented krb5_decode_ticket() as
1225 * old_krb5_decode_ticket(). Missing from MIT1.0.6.
1226 * 20010615 VRS Re-cast as openssl/asn1 d2i_*() functions.
1227 * Re-used some of the old krb5_decode_ticket()
1228 * code here. This tkt should alloc/free just
1229 * like the real thing.
1231 static krb5_error_code
1232 kssl_TKT2tkt( /* IN */ krb5_context krb5context,
1233 /* IN */ KRB5_TKTBODY *asn1ticket,
1234 /* OUT */ krb5_ticket **krb5ticket,
1235 /* OUT */ KSSL_ERR *kssl_err )
1237 krb5_error_code krb5rc = KRB5KRB_ERR_GENERIC;
1238 krb5_ticket *new5ticket = NULL;
1239 ASN1_GENERALSTRING *gstr_svc, *gstr_host;
1243 if (asn1ticket == NULL || asn1ticket->realm == NULL ||
1244 asn1ticket->sname == NULL ||
1245 sk_ASN1_GENERALSTRING_num(asn1ticket->sname->namestring) < 2)
1247 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
1248 "Null field in asn1ticket.\n");
1249 kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
1250 return KRB5KRB_ERR_GENERIC;
1253 if ((new5ticket = (krb5_ticket *) calloc(1, sizeof(krb5_ticket)))==NULL)
1255 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
1256 "Unable to allocate new krb5_ticket.\n");
1257 kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
1258 return ENOMEM; /* or KRB5KRB_ERR_GENERIC; */
1261 gstr_svc = sk_ASN1_GENERALSTRING_value(asn1ticket->sname->namestring, 0);
1262 gstr_host = sk_ASN1_GENERALSTRING_value(asn1ticket->sname->namestring, 1);
1264 if ((krb5rc = kssl_build_principal_2(krb5context,
1265 &new5ticket->server,
1266 asn1ticket->realm->length, (char *)asn1ticket->realm->data,
1267 gstr_svc->length, (char *)gstr_svc->data,
1268 gstr_host->length, (char *)gstr_host->data)) != 0)
1271 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
1272 "Error building ticket server principal.\n");
1273 kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
1274 return krb5rc; /* or KRB5KRB_ERR_GENERIC; */
1277 krb5_princ_type(krb5context, new5ticket->server) =
1278 asn1ticket->sname->nametype->data[0];
1279 new5ticket->enc_part.enctype = asn1ticket->encdata->etype->data[0];
1280 new5ticket->enc_part.kvno = asn1ticket->encdata->kvno->data[0];
1281 new5ticket->enc_part.ciphertext.length =
1282 asn1ticket->encdata->cipher->length;
1283 if ((new5ticket->enc_part.ciphertext.data =
1284 calloc(1, asn1ticket->encdata->cipher->length)) == NULL)
1287 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
1288 "Error allocating cipher in krb5ticket.\n");
1289 kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
1290 return KRB5KRB_ERR_GENERIC;
1294 memcpy(new5ticket->enc_part.ciphertext.data,
1295 asn1ticket->encdata->cipher->data,
1296 asn1ticket->encdata->cipher->length);
1299 *krb5ticket = new5ticket;
1304 /* Given krb5 service name in KSSL_CTX *kssl_ctx (typically "kssl"),
1305 * and krb5 AP_REQ message & message length,
1306 * Return Kerberos session key and client principle
1307 * to SSL Server in KSSL_CTX *kssl_ctx.
1309 * 19990702 VRS Started.
1312 kssl_sget_tkt( /* UPDATE */ KSSL_CTX *kssl_ctx,
1313 /* IN */ krb5_data *indata,
1314 /* OUT */ krb5_ticket_times *ttimes,
1315 /* OUT */ KSSL_ERR *kssl_err )
1317 krb5_error_code krb5rc = KRB5KRB_ERR_GENERIC;
1318 static krb5_context krb5context = NULL;
1319 static krb5_auth_context krb5auth_context = NULL;
1320 krb5_ticket *krb5ticket = NULL;
1321 KRB5_TKTBODY *asn1ticket = NULL;
1322 const unsigned char *p;
1323 krb5_keytab krb5keytab = NULL;
1324 krb5_keytab_entry kt_entry;
1325 krb5_principal krb5server;
1326 krb5_rcache rcache = NULL;
1328 kssl_err_set(kssl_err, 0, "");
1332 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1333 "No kssl_ctx defined.\n");
1338 fprintf(stderr,"in kssl_sget_tkt(%s)\n", kstring(kssl_ctx->service_name));
1339 #endif /* KSSL_DEBUG */
1341 if (!krb5context && (krb5rc = krb5_init_context(&krb5context)))
1343 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1344 "krb5_init_context() fails.\n");
1347 if (krb5auth_context &&
1348 (krb5rc = krb5_auth_con_free(krb5context, krb5auth_context)))
1350 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1351 "krb5_auth_con_free() fails.\n");
1354 else krb5auth_context = NULL;
1355 if (!krb5auth_context &&
1356 (krb5rc = krb5_auth_con_init(krb5context, &krb5auth_context)))
1358 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1359 "krb5_auth_con_init() fails.\n");
1364 if ((krb5rc = krb5_auth_con_getrcache(krb5context, krb5auth_context,
1367 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1368 "krb5_auth_con_getrcache() fails.\n");
1372 if ((krb5rc = krb5_sname_to_principal(krb5context, NULL,
1373 (kssl_ctx->service_name)? kssl_ctx->service_name: KRB5SVC,
1374 KRB5_NT_SRV_HST, &krb5server)) != 0)
1376 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1377 "krb5_sname_to_principal() fails.\n");
1383 if ((krb5rc = krb5_get_server_rcache(krb5context,
1384 krb5_princ_component(krb5context, krb5server, 0),
1387 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1388 "krb5_get_server_rcache() fails.\n");
1393 if ((krb5rc = krb5_auth_con_setrcache(krb5context, krb5auth_context, rcache)))
1395 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1396 "krb5_auth_con_setrcache() fails.\n");
1401 /* kssl_ctx->keytab_file == NULL ==> use Kerberos default
1403 if (kssl_ctx->keytab_file)
1405 krb5rc = krb5_kt_resolve(krb5context, kssl_ctx->keytab_file,
1409 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1410 "krb5_kt_resolve() fails.\n");
1416 krb5rc = krb5_kt_default(krb5context,&krb5keytab);
1419 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
1420 "krb5_kt_default() fails.\n");
1425 /*- Actual Kerberos5 krb5_recvauth() has initial conversation here
1426 * o check KRB5_SENDAUTH_BADAUTHVERS
1427 * unless KRB5_RECVAUTH_SKIP_VERSION
1428 * o check KRB5_SENDAUTH_BADAPPLVERS
1429 * o send "0" msg if all OK
1433 * 20010411 was using AP_REQ instead of true KerberosWrapper
1435 * if ((krb5rc = krb5_rd_req(krb5context, &krb5auth_context,
1436 * &krb5in_data, krb5server, krb5keytab,
1437 * &ap_option, &krb5ticket)) != 0) { Error }
1440 p = (unsigned char *)indata->data;
1441 if ((asn1ticket = (KRB5_TKTBODY *) d2i_KRB5_TICKET(NULL, &p,
1442 (long) indata->length)) == NULL)
1444 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
1445 "d2i_KRB5_TICKET() ASN.1 decode failure.\n");
1446 kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
1450 /* Was: krb5rc = krb5_decode_ticket(krb5in_data,&krb5ticket)) != 0) */
1451 if ((krb5rc = kssl_TKT2tkt(krb5context, asn1ticket, &krb5ticket,
1454 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
1455 "Error converting ASN.1 ticket to krb5_ticket.\n");
1456 kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
1460 if (! krb5_principal_compare(krb5context, krb5server,
1461 krb5ticket->server)) {
1462 krb5rc = KRB5_PRINC_NOMATCH;
1463 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
1464 "server principal != ticket principal\n");
1465 kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
1468 if ((krb5rc = krb5_kt_get_entry(krb5context, krb5keytab,
1469 krb5ticket->server, krb5ticket->enc_part.kvno,
1470 krb5ticket->enc_part.enctype, &kt_entry)) != 0) {
1471 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
1472 "krb5_kt_get_entry() fails with %x.\n", krb5rc);
1473 kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
1476 if ((krb5rc = krb5_decrypt_tkt_part(krb5context, &kt_entry.key,
1477 krb5ticket)) != 0) {
1478 BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
1479 "krb5_decrypt_tkt_part() failed.\n");
1480 kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
1484 krb5_kt_free_entry(krb5context, &kt_entry);
1487 int i; krb5_address **paddr = krb5ticket->enc_part2->caddrs;
1488 fprintf(stderr,"Decrypted ticket fields:\n");
1489 fprintf(stderr,"\tflags: %X, transit-type: %X",
1490 krb5ticket->enc_part2->flags,
1491 krb5ticket->enc_part2->transited.tr_type);
1492 print_krb5_data("\ttransit-data: ",
1493 &(krb5ticket->enc_part2->transited.tr_contents));
1494 fprintf(stderr,"\tcaddrs: %p, authdata: %p\n",
1495 krb5ticket->enc_part2->caddrs,
1496 krb5ticket->enc_part2->authorization_data);
1499 fprintf(stderr,"\tcaddrs:\n");
1500 for (i=0; paddr[i] != NULL; i++)
1503 d.length=paddr[i]->length;
1504 d.data=paddr[i]->contents;
1505 print_krb5_data("\t\tIP: ", &d);
1508 fprintf(stderr,"\tstart/auth/end times: %d / %d / %d\n",
1509 krb5ticket->enc_part2->times.starttime,
1510 krb5ticket->enc_part2->times.authtime,
1511 krb5ticket->enc_part2->times.endtime);
1513 #endif /* KSSL_DEBUG */
1516 krb5rc = KRB5_NO_TKT_SUPPLIED;
1517 if (!krb5ticket || !krb5ticket->enc_part2 ||
1518 !krb5ticket->enc_part2->client ||
1519 !krb5ticket->enc_part2->client->data ||
1520 !krb5ticket->enc_part2->session)
1522 kssl_err_set(kssl_err, SSL_R_KRB5_S_BAD_TICKET,
1523 "bad ticket from krb5_rd_req.\n");
1525 else if (kssl_ctx_setprinc(kssl_ctx, KSSL_CLIENT,
1526 &krb5ticket->enc_part2->client->realm,
1527 krb5ticket->enc_part2->client->data,
1528 krb5ticket->enc_part2->client->length))
1530 kssl_err_set(kssl_err, SSL_R_KRB5_S_BAD_TICKET,
1531 "kssl_ctx_setprinc() fails.\n");
1533 else if (kssl_ctx_setkey(kssl_ctx, krb5ticket->enc_part2->session))
1535 kssl_err_set(kssl_err, SSL_R_KRB5_S_BAD_TICKET,
1536 "kssl_ctx_setkey() fails.\n");
1538 else if (krb5ticket->enc_part2->flags & TKT_FLG_INVALID)
1540 krb5rc = KRB5KRB_AP_ERR_TKT_INVALID;
1541 kssl_err_set(kssl_err, SSL_R_KRB5_S_BAD_TICKET,
1542 "invalid ticket from krb5_rd_req.\n");
1546 kssl_ctx->enctype = krb5ticket->enc_part.enctype;
1547 ttimes->authtime = krb5ticket->enc_part2->times.authtime;
1548 ttimes->starttime = krb5ticket->enc_part2->times.starttime;
1549 ttimes->endtime = krb5ticket->enc_part2->times.endtime;
1550 ttimes->renew_till = krb5ticket->enc_part2->times.renew_till;
1554 kssl_ctx_show(kssl_ctx);
1555 #endif /* KSSL_DEBUG */
1557 if (asn1ticket) KRB5_TICKET_free((KRB5_TICKET *) asn1ticket);
1558 if (krb5keytab) krb5_kt_close(krb5context, krb5keytab);
1559 if (krb5ticket) krb5_free_ticket(krb5context, krb5ticket);
1560 if (krb5server) krb5_free_principal(krb5context, krb5server);
1565 /* Allocate & return a new kssl_ctx struct.
1570 return ((KSSL_CTX *) kssl_calloc(1, sizeof(KSSL_CTX)));
1574 /* Frees a kssl_ctx struct and any allocated memory it holds.
1578 kssl_ctx_free(KSSL_CTX *kssl_ctx)
1580 if (kssl_ctx == NULL) return kssl_ctx;
1582 if (kssl_ctx->key) OPENSSL_cleanse(kssl_ctx->key,
1584 if (kssl_ctx->key) kssl_free(kssl_ctx->key);
1585 if (kssl_ctx->client_princ) kssl_free(kssl_ctx->client_princ);
1586 if (kssl_ctx->service_host) kssl_free(kssl_ctx->service_host);
1587 if (kssl_ctx->service_name) kssl_free(kssl_ctx->service_name);
1588 if (kssl_ctx->keytab_file) kssl_free(kssl_ctx->keytab_file);
1590 kssl_free(kssl_ctx);
1591 return (KSSL_CTX *) NULL;
1595 /* Given an array of (krb5_data *) entity (and optional realm),
1596 * set the plain (char *) client_princ or service_host member
1597 * of the kssl_ctx struct.
1600 kssl_ctx_setprinc(KSSL_CTX *kssl_ctx, int which,
1601 krb5_data *realm, krb5_data *entity, int nentities)
1607 if (kssl_ctx == NULL || entity == NULL) return KSSL_CTX_ERR;
1611 case KSSL_CLIENT: princ = &kssl_ctx->client_princ; break;
1612 case KSSL_SERVER: princ = &kssl_ctx->service_host; break;
1613 default: return KSSL_CTX_ERR; break;
1615 if (*princ) kssl_free(*princ);
1617 /* Add up all the entity->lengths */
1619 for (i=0; i < nentities; i++)
1621 length += entity[i].length;
1623 /* Add in space for the '/' character(s) (if any) */
1624 length += nentities-1;
1625 /* Space for the ('@'+realm+NULL | NULL) */
1626 length += ((realm)? realm->length + 2: 1);
1628 if ((*princ = kssl_calloc(1, length)) == NULL)
1629 return KSSL_CTX_ERR;
1632 for (i = 0; i < nentities; i++)
1634 strncat(*princ, entity[i].data, entity[i].length);
1635 if (i < nentities-1)
1637 strcat (*princ, "/");
1642 strcat (*princ, "@");
1643 (void) strncat(*princ, realm->data, realm->length);
1651 /*- Set one of the plain (char *) string members of the kssl_ctx struct.
1652 * Default values should be:
1653 * which == KSSL_SERVICE => "khost" (KRB5SVC)
1654 * which == KSSL_KEYTAB => "/etc/krb5.keytab" (KRB5KEYTAB)
1657 kssl_ctx_setstring(KSSL_CTX *kssl_ctx, int which, char *text)
1661 if (!kssl_ctx) return KSSL_CTX_ERR;
1665 case KSSL_SERVICE: string = &kssl_ctx->service_name; break;
1666 case KSSL_SERVER: string = &kssl_ctx->service_host; break;
1667 case KSSL_CLIENT: string = &kssl_ctx->client_princ; break;
1668 case KSSL_KEYTAB: string = &kssl_ctx->keytab_file; break;
1669 default: return KSSL_CTX_ERR; break;
1671 if (*string) kssl_free(*string);
1679 if ((*string = kssl_calloc(1, strlen(text) + 1)) == NULL)
1680 return KSSL_CTX_ERR;
1682 strcpy(*string, text);
1688 /* Copy the Kerberos session key from a (krb5_keyblock *) to a kssl_ctx
1689 * struct. Clear kssl_ctx->key if Kerberos session key is NULL.
1692 kssl_ctx_setkey(KSSL_CTX *kssl_ctx, krb5_keyblock *session)
1695 krb5_enctype enctype;
1696 krb5_octet FAR *contents = NULL;
1698 if (!kssl_ctx) return KSSL_CTX_ERR;
1702 OPENSSL_cleanse(kssl_ctx->key, kssl_ctx->length);
1703 kssl_free(kssl_ctx->key);
1710 length = session->keyvalue->length;
1711 enctype = session->keytype;
1712 contents = session->keyvalue->contents;
1714 length = session->length;
1715 enctype = session->enctype;
1716 contents = session->contents;
1718 kssl_ctx->enctype = enctype;
1719 kssl_ctx->length = length;
1723 kssl_ctx->enctype = ENCTYPE_UNKNOWN;
1724 kssl_ctx->length = 0;
1728 if ((kssl_ctx->key =
1729 (krb5_octet FAR *) kssl_calloc(1, kssl_ctx->length)) == NULL)
1731 kssl_ctx->length = 0;
1732 return KSSL_CTX_ERR;
1735 memcpy(kssl_ctx->key, contents, length);
1741 /* Display contents of kssl_ctx struct
1744 kssl_ctx_show(KSSL_CTX *kssl_ctx)
1748 printf("kssl_ctx: ");
1749 if (kssl_ctx == NULL)
1755 printf("%p\n", (void *)kssl_ctx);
1757 printf("\tservice:\t%s\n",
1758 (kssl_ctx->service_name)? kssl_ctx->service_name: "NULL");
1759 printf("\tclient:\t%s\n",
1760 (kssl_ctx->client_princ)? kssl_ctx->client_princ: "NULL");
1761 printf("\tserver:\t%s\n",
1762 (kssl_ctx->service_host)? kssl_ctx->service_host: "NULL");
1763 printf("\tkeytab:\t%s\n",
1764 (kssl_ctx->keytab_file)? kssl_ctx->keytab_file: "NULL");
1765 printf("\tkey [%d:%d]:\t",
1766 kssl_ctx->enctype, kssl_ctx->length);
1768 for (i=0; i < kssl_ctx->length && kssl_ctx->key; i++)
1770 printf("%02x", kssl_ctx->key[i]);
1777 kssl_keytab_is_available(KSSL_CTX *kssl_ctx)
1779 krb5_context krb5context = NULL;
1780 krb5_keytab krb5keytab = NULL;
1781 krb5_keytab_entry entry;
1782 krb5_principal princ = NULL;
1783 krb5_error_code krb5rc = KRB5KRB_ERR_GENERIC;
1786 if ((krb5rc = krb5_init_context(&krb5context)))
1789 /* kssl_ctx->keytab_file == NULL ==> use Kerberos default
1791 if (kssl_ctx->keytab_file)
1793 krb5rc = krb5_kt_resolve(krb5context, kssl_ctx->keytab_file,
1800 krb5rc = krb5_kt_default(krb5context,&krb5keytab);
1805 /* the host key we are looking for */
1806 krb5rc = krb5_sname_to_principal(krb5context, NULL,
1807 kssl_ctx->service_name ? kssl_ctx->service_name: KRB5SVC,
1808 KRB5_NT_SRV_HST, &princ);
1813 krb5rc = krb5_kt_get_entry(krb5context, krb5keytab,
1816 0 /* IGNORE_ENCTYPE */,
1818 if ( krb5rc == KRB5_KT_NOTFOUND ) {
1821 } else if ( krb5rc )
1824 krb5_kt_free_entry(krb5context, &entry);
1828 if (krb5keytab) krb5_kt_close(krb5context, krb5keytab);
1829 if (princ) krb5_free_principal(krb5context, princ);
1830 if (krb5context) krb5_free_context(krb5context);
1835 kssl_tgt_is_available(KSSL_CTX *kssl_ctx)
1837 krb5_error_code krb5rc = KRB5KRB_ERR_GENERIC;
1838 krb5_context krb5context = NULL;
1839 krb5_ccache krb5ccdef = NULL;
1840 krb5_creds krb5creds, *krb5credsp = NULL;
1843 memset((char *)&krb5creds, 0, sizeof(krb5creds));
1848 if (!kssl_ctx->service_host)
1851 if ((krb5rc = krb5_init_context(&krb5context)) != 0)
1854 if ((krb5rc = krb5_sname_to_principal(krb5context,
1855 kssl_ctx->service_host,
1856 (kssl_ctx->service_name)? kssl_ctx->service_name: KRB5SVC,
1857 KRB5_NT_SRV_HST, &krb5creds.server)) != 0)
1860 if ((krb5rc = krb5_cc_default(krb5context, &krb5ccdef)) != 0)
1863 if ((krb5rc = krb5_cc_get_principal(krb5context, krb5ccdef,
1864 &krb5creds.client)) != 0)
1867 if ((krb5rc = krb5_get_credentials(krb5context, 0, krb5ccdef,
1868 &krb5creds, &krb5credsp)) != 0)
1875 kssl_ctx_show(kssl_ctx);
1876 #endif /* KSSL_DEBUG */
1878 if (krb5creds.client) krb5_free_principal(krb5context, krb5creds.client);
1879 if (krb5creds.server) krb5_free_principal(krb5context, krb5creds.server);
1880 if (krb5context) krb5_free_context(krb5context);
1884 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_WIN32)
1885 void kssl_krb5_free_data_contents(krb5_context context, krb5_data *data)
1891 #elif defined(KRB5_MIT_OLD11)
1893 krb5_xfree(data->data);
1897 krb5_free_data_contents(NULL, data);
1900 #endif /* !OPENSSL_SYS_WINDOWS && !OPENSSL_SYS_WIN32 */
1903 /* Given pointers to KerberosTime and struct tm structs, convert the
1904 * KerberosTime string to struct tm. Note that KerberosTime is a
1905 * ASN1_GENERALIZEDTIME value, constrained to GMT with no fractional
1906 * seconds as defined in RFC 1510.
1907 * Return pointer to the (partially) filled in struct tm on success,
1908 * return NULL on failure.
1910 static struct tm *k_gmtime(ASN1_GENERALIZEDTIME *gtime, struct tm *k_tm)
1914 if (!k_tm) return NULL;
1915 if (gtime == NULL || gtime->length < 14) return NULL;
1916 if (gtime->data == NULL) return NULL;
1918 p = (char *)>ime->data[14];
1920 c = *p; *p = '\0'; p -= 2; k_tm->tm_sec = atoi(p); *(p+2) = c;
1921 c = *p; *p = '\0'; p -= 2; k_tm->tm_min = atoi(p); *(p+2) = c;
1922 c = *p; *p = '\0'; p -= 2; k_tm->tm_hour = atoi(p); *(p+2) = c;
1923 c = *p; *p = '\0'; p -= 2; k_tm->tm_mday = atoi(p); *(p+2) = c;
1924 c = *p; *p = '\0'; p -= 2; k_tm->tm_mon = atoi(p)-1; *(p+2) = c;
1925 c = *p; *p = '\0'; p -= 4; k_tm->tm_year = atoi(p)-1900; *(p+4) = c;
1931 /* Helper function for kssl_validate_times().
1932 * We need context->clockskew, but krb5_context is an opaque struct.
1933 * So we try to sneek the clockskew out through the replay cache.
1934 * If that fails just return a likely default (300 seconds).
1936 static krb5_deltat get_rc_clockskew(krb5_context context)
1939 krb5_deltat clockskew;
1941 if (krb5_rc_default(context, &rc)) return KSSL_CLOCKSKEW;
1942 if (krb5_rc_initialize(context, rc, 0)) return KSSL_CLOCKSKEW;
1943 if (krb5_rc_get_lifespan(context, rc, &clockskew)) {
1944 clockskew = KSSL_CLOCKSKEW;
1946 (void) krb5_rc_destroy(context, rc);
1951 /* kssl_validate_times() combines (and more importantly exposes)
1952 * the MIT KRB5 internal function krb5_validate_times() and the
1953 * in_clock_skew() macro. The authenticator client time is checked
1954 * to be within clockskew secs of the current time and the current
1955 * time is checked to be within the ticket start and expire times.
1956 * Either check may be omitted by supplying a NULL value.
1957 * Returns 0 for valid times, SSL_R_KRB5* error codes otherwise.
1958 * See Also: (Kerberos source)/krb5/lib/krb5/krb/valid_times.c
1961 krb5_error_code kssl_validate_times( krb5_timestamp atime,
1962 krb5_ticket_times *ttimes)
1965 krb5_timestamp start, now;
1967 krb5_context context;
1969 if ((rc = krb5_init_context(&context))) return SSL_R_KRB5_S_BAD_TICKET;
1970 skew = get_rc_clockskew(context);
1971 if ((rc = krb5_timeofday(context,&now))) return SSL_R_KRB5_S_BAD_TICKET;
1972 krb5_free_context(context);
1974 if (atime && labs(atime - now) >= skew) return SSL_R_KRB5_S_TKT_SKEW;
1976 if (! ttimes) return 0;
1978 start = (ttimes->starttime != 0)? ttimes->starttime: ttimes->authtime;
1979 if (start - now > skew) return SSL_R_KRB5_S_TKT_NYV;
1980 if ((now - ttimes->endtime) > skew) return SSL_R_KRB5_S_TKT_EXPIRED;
1983 fprintf(stderr,"kssl_validate_times: %d |<- | %d - %d | < %d ->| %d\n",
1984 start, atime, now, skew, ttimes->endtime);
1985 #endif /* KSSL_DEBUG */
1991 /* Decode and decrypt given DER-encoded authenticator, then pass
1992 * authenticator ctime back in *atimep (or 0 if time unavailable).
1993 * Returns krb5_error_code and kssl_err on error. A NULL
1994 * authenticator (authentp->length == 0) is not considered an error.
1995 * Note that kssl_check_authent() makes use of the KRB5 session key;
1996 * you must call kssl_sget_tkt() to get the key before calling this routine.
1998 krb5_error_code kssl_check_authent(
1999 /* IN */ KSSL_CTX *kssl_ctx,
2000 /* IN */ krb5_data *authentp,
2001 /* OUT */ krb5_timestamp *atimep,
2002 /* OUT */ KSSL_ERR *kssl_err )
2004 krb5_error_code krb5rc = 0;
2005 KRB5_ENCDATA *dec_authent = NULL;
2006 KRB5_AUTHENTBODY *auth = NULL;
2007 krb5_enctype enctype;
2008 EVP_CIPHER_CTX ciph_ctx;
2009 const EVP_CIPHER *enc = NULL;
2010 unsigned char iv[EVP_MAX_IV_LENGTH];
2011 const unsigned char *p;
2012 unsigned char *unenc_authent;
2013 int outl, unencbufsize;
2014 struct tm tm_time, *tm_l, *tm_g;
2015 time_t now, tl, tg, tr, tz_offset;
2017 EVP_CIPHER_CTX_init(&ciph_ctx);
2019 kssl_err_set(kssl_err, 0, "");
2021 #ifndef KRB5CHECKAUTH
2024 #if KRB5CHECKAUTH == 0
2027 #endif /* KRB5CHECKAUTH */
2029 if (authentp == NULL || authentp->length == 0) return 0;
2034 fprintf(stderr,"kssl_check_authent: authenticator[%d]:\n",authentp->length);
2036 for (ui=0; ui < authentp->length; ui++) fprintf(stderr,"%02x ",p[ui]);
2037 fprintf(stderr,"\n");
2039 #endif /* KSSL_DEBUG */
2041 unencbufsize = 2 * authentp->length;
2042 if ((unenc_authent = calloc(1, unencbufsize)) == NULL)
2044 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
2045 "Unable to allocate authenticator buffer.\n");
2046 krb5rc = KRB5KRB_ERR_GENERIC;
2050 p = (unsigned char *)authentp->data;
2051 if ((dec_authent = d2i_KRB5_ENCDATA(NULL, &p,
2052 (long) authentp->length)) == NULL)
2054 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
2055 "Error decoding authenticator.\n");
2056 krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
2060 enctype = dec_authent->etype->data[0]; /* should = kssl_ctx->enctype */
2061 #if !defined(KRB5_MIT_OLD11)
2062 switch ( enctype ) {
2063 case ENCTYPE_DES3_CBC_SHA1: /* EVP_des_ede3_cbc(); */
2064 case ENCTYPE_DES3_CBC_SHA:
2065 case ENCTYPE_DES3_CBC_RAW:
2066 krb5rc = 0; /* Skip, can't handle derived keys */
2070 enc = kssl_map_enc(enctype);
2071 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2075 /* Disable kssl_check_authent for ENCTYPE_DES3_CBC_SHA1.
2076 * This enctype indicates the authenticator was encrypted
2077 * using key-usage derived keys which openssl cannot decrypt.
2082 if (!EVP_CipherInit(&ciph_ctx,enc,kssl_ctx->key,iv,0))
2084 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
2085 "EVP_CipherInit error decrypting authenticator.\n");
2086 krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
2089 outl = dec_authent->cipher->length;
2090 if (!EVP_Cipher(&ciph_ctx,unenc_authent,dec_authent->cipher->data,outl))
2092 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
2093 "EVP_Cipher error decrypting authenticator.\n");
2094 krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
2097 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2102 fprintf(stderr,"kssl_check_authent: decrypted authenticator[%d] =\n", outl);
2103 for (padl=0; padl < outl; padl++) fprintf(stderr,"%02x ",unenc_authent[padl]);
2104 fprintf(stderr,"\n");
2106 #endif /* KSSL_DEBUG */
2108 if ((p = kssl_skip_confound(enctype, unenc_authent)) == NULL)
2110 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
2111 "confounded by authenticator.\n");
2112 krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
2115 outl -= p - unenc_authent;
2117 if ((auth = (KRB5_AUTHENTBODY *) d2i_KRB5_AUTHENT(NULL, &p,
2118 (long) outl))==NULL)
2120 kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
2121 "Error decoding authenticator body.\n");
2122 krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
2126 memset(&tm_time,0,sizeof(struct tm));
2127 if (k_gmtime(auth->ctime, &tm_time) &&
2128 ((tr = mktime(&tm_time)) != (time_t)(-1)))
2131 tm_l = localtime(&now); tl = mktime(tm_l);
2132 tm_g = gmtime(&now); tg = mktime(tm_g);
2133 tz_offset = tg - tl;
2135 *atimep = (krb5_timestamp)(tr - tz_offset);
2139 fprintf(stderr,"kssl_check_authent: returns %d for client time ", *atimep);
2140 if (auth->ctime && auth->ctime->length && auth->ctime->data)
2141 fprintf(stderr,"%.*s\n", auth->ctime->length, auth->ctime->data);
2142 else fprintf(stderr,"NULL\n");
2143 #endif /* KSSL_DEBUG */
2146 if (auth) KRB5_AUTHENT_free((KRB5_AUTHENT *) auth);
2147 if (dec_authent) KRB5_ENCDATA_free(dec_authent);
2148 if (unenc_authent) free(unenc_authent);
2149 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2154 /* Replaces krb5_build_principal_ext(), with varargs length == 2 (svc, host),
2155 * because I don't know how to stub varargs.
2156 * Returns krb5_error_code == ENOMEM on alloc error, otherwise
2157 * passes back newly constructed principal, which should be freed by caller.
2159 krb5_error_code kssl_build_principal_2(
2160 /* UPDATE */ krb5_context context,
2161 /* OUT */ krb5_principal *princ,
2162 /* IN */ int rlen, const char *realm,
2163 /* IN */ int slen, const char *svc,
2164 /* IN */ int hlen, const char *host)
2166 krb5_data *p_data = NULL;
2167 krb5_principal new_p = NULL;
2170 if ((p_data = (krb5_data *) calloc(2, sizeof(krb5_data))) == NULL ||
2171 (new_p = (krb5_principal) calloc(1, sizeof(krb5_principal_data)))
2174 new_p->data = p_data;
2176 if ((new_r = calloc(1, rlen + 1)) == NULL) goto err;
2177 memcpy(new_r, realm, rlen);
2178 krb5_princ_set_realm_length(context, new_p, rlen);
2179 krb5_princ_set_realm_data(context, new_p, new_r);
2181 if ((new_p->data[0].data = calloc(1, slen + 1)) == NULL) goto err;
2182 memcpy(new_p->data[0].data, svc, slen);
2183 new_p->data[0].length = slen;
2185 if ((new_p->data[1].data = calloc(1, hlen + 1)) == NULL) goto err;
2186 memcpy(new_p->data[1].data, host, hlen);
2187 new_p->data[1].length = hlen;
2189 krb5_princ_type(context, new_p) = KRB5_NT_UNKNOWN;
2194 if (new_p && new_p[0].data) free(new_p[0].data);
2195 if (new_p && new_p[1].data) free(new_p[1].data);
2196 if (new_p) free(new_p);
2197 if (new_r) free(new_r);
2201 void SSL_set0_kssl_ctx(SSL *s, KSSL_CTX *kctx)
2206 KSSL_CTX * SSL_get0_kssl_ctx(SSL *s)
2211 char *kssl_ctx_get0_client_princ(KSSL_CTX *kctx)
2214 return kctx->client_princ;
2218 #else /* !OPENSSL_NO_KRB5 */
2220 #if defined(PEDANTIC) || defined(OPENSSL_SYS_VMS)
2221 static void *dummy=&dummy;
2224 #endif /* !OPENSSL_NO_KRB5 */