1/* 2 * Copyright (c) 1997 - 2002 Kungliga Tekniska H��gskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34#include "krb5_locl.h" 35 36krb5_error_code KRB5_LIB_FUNCTION 37krb5_auth_con_init(krb5_context context, 38 krb5_auth_context *auth_context) 39{ 40 krb5_auth_context p; 41 42 ALLOC(p, 1); 43 if(!p) { 44 krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", "")); 45 return ENOMEM; 46 } 47 memset(p, 0, sizeof(*p)); 48 ALLOC(p->authenticator, 1); 49 if (!p->authenticator) { 50 krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", "")); 51 free(p); 52 return ENOMEM; 53 } 54 memset (p->authenticator, 0, sizeof(*p->authenticator)); 55 p->flags = KRB5_AUTH_CONTEXT_DO_TIME; 56 57 p->local_address = NULL; 58 p->remote_address = NULL; 59 p->local_port = 0; 60 p->remote_port = 0; 61 p->keytype = KEYTYPE_NULL; 62 p->cksumtype = CKSUMTYPE_NONE; 63 *auth_context = p; 64 return 0; 65} 66 67krb5_error_code KRB5_LIB_FUNCTION 68krb5_auth_con_free(krb5_context context, 69 krb5_auth_context auth_context) 70{ 71 if (auth_context != NULL) { 72 krb5_free_authenticator(context, &auth_context->authenticator); 73 if(auth_context->local_address){ 74 free_HostAddress(auth_context->local_address); 75 free(auth_context->local_address); 76 } 77 if(auth_context->remote_address){ 78 free_HostAddress(auth_context->remote_address); 79 free(auth_context->remote_address); 80 } 81 krb5_free_keyblock(context, auth_context->keyblock); 82 krb5_free_keyblock(context, auth_context->remote_subkey); 83 krb5_free_keyblock(context, auth_context->local_subkey); 84 free (auth_context); 85 } 86 return 0; 87} 88 89krb5_error_code KRB5_LIB_FUNCTION 90krb5_auth_con_setflags(krb5_context context, 91 krb5_auth_context auth_context, 92 int32_t flags) 93{ 94 auth_context->flags = flags; 95 return 0; 96} 97 98 99krb5_error_code KRB5_LIB_FUNCTION 100krb5_auth_con_getflags(krb5_context context, 101 krb5_auth_context auth_context, 102 int32_t *flags) 103{ 104 *flags = auth_context->flags; 105 return 0; 106} 107 108krb5_error_code KRB5_LIB_FUNCTION 109krb5_auth_con_addflags(krb5_context context, 110 krb5_auth_context auth_context, 111 int32_t addflags, 112 int32_t *flags) 113{ 114 if (flags) 115 *flags = auth_context->flags; 116 auth_context->flags |= addflags; 117 return 0; 118} 119 120krb5_error_code KRB5_LIB_FUNCTION 121krb5_auth_con_removeflags(krb5_context context, 122 krb5_auth_context auth_context, 123 int32_t removeflags, 124 int32_t *flags) 125{ 126 if (flags) 127 *flags = auth_context->flags; 128 auth_context->flags &= ~removeflags; 129 return 0; 130} 131 132krb5_error_code KRB5_LIB_FUNCTION 133krb5_auth_con_setaddrs(krb5_context context, 134 krb5_auth_context auth_context, 135 krb5_address *local_addr, 136 krb5_address *remote_addr) 137{ 138 if (local_addr) { 139 if (auth_context->local_address) 140 krb5_free_address (context, auth_context->local_address); 141 else 142 if ((auth_context->local_address = malloc(sizeof(krb5_address))) == NULL) 143 return ENOMEM; 144 krb5_copy_address(context, local_addr, auth_context->local_address); 145 } 146 if (remote_addr) { 147 if (auth_context->remote_address) 148 krb5_free_address (context, auth_context->remote_address); 149 else 150 if ((auth_context->remote_address = malloc(sizeof(krb5_address))) == NULL) 151 return ENOMEM; 152 krb5_copy_address(context, remote_addr, auth_context->remote_address); 153 } 154 return 0; 155} 156 157krb5_error_code KRB5_LIB_FUNCTION 158krb5_auth_con_genaddrs(krb5_context context, 159 krb5_auth_context auth_context, 160 int fd, int flags) 161{ 162 krb5_error_code ret; 163 krb5_address local_k_address, remote_k_address; 164 krb5_address *lptr = NULL, *rptr = NULL; 165 struct sockaddr_storage ss_local, ss_remote; 166 struct sockaddr *local = (struct sockaddr *)&ss_local; 167 struct sockaddr *remote = (struct sockaddr *)&ss_remote; 168 socklen_t len; 169 170 if(flags & KRB5_AUTH_CONTEXT_GENERATE_LOCAL_ADDR) { 171 if (auth_context->local_address == NULL) { 172 len = sizeof(ss_local); 173 if(getsockname(fd, local, &len) < 0) { 174 ret = errno; 175 krb5_set_error_message(context, ret, 176 "getsockname: %s", 177 strerror(ret)); 178 goto out; 179 } 180 ret = krb5_sockaddr2address (context, local, &local_k_address); 181 if(ret) goto out; 182 if(flags & KRB5_AUTH_CONTEXT_GENERATE_LOCAL_FULL_ADDR) { 183 krb5_sockaddr2port (context, local, &auth_context->local_port); 184 } else 185 auth_context->local_port = 0; 186 lptr = &local_k_address; 187 } 188 } 189 if(flags & KRB5_AUTH_CONTEXT_GENERATE_REMOTE_ADDR) { 190 len = sizeof(ss_remote); 191 if(getpeername(fd, remote, &len) < 0) { 192 ret = errno; 193 krb5_set_error_message(context, ret, 194 "getpeername: %s", strerror(ret)); 195 goto out; 196 } 197 ret = krb5_sockaddr2address (context, remote, &remote_k_address); 198 if(ret) goto out; 199 if(flags & KRB5_AUTH_CONTEXT_GENERATE_REMOTE_FULL_ADDR) { 200 krb5_sockaddr2port (context, remote, &auth_context->remote_port); 201 } else 202 auth_context->remote_port = 0; 203 rptr = &remote_k_address; 204 } 205 ret = krb5_auth_con_setaddrs (context, 206 auth_context, 207 lptr, 208 rptr); 209 out: 210 if (lptr) 211 krb5_free_address (context, lptr); 212 if (rptr) 213 krb5_free_address (context, rptr); 214 return ret; 215 216} 217 218krb5_error_code KRB5_LIB_FUNCTION 219krb5_auth_con_setaddrs_from_fd (krb5_context context, 220 krb5_auth_context auth_context, 221 void *p_fd) 222{ 223 int fd = *(int*)p_fd; 224 int flags = 0; 225 if(auth_context->local_address == NULL) 226 flags |= KRB5_AUTH_CONTEXT_GENERATE_LOCAL_FULL_ADDR; 227 if(auth_context->remote_address == NULL) 228 flags |= KRB5_AUTH_CONTEXT_GENERATE_REMOTE_FULL_ADDR; 229 return krb5_auth_con_genaddrs(context, auth_context, fd, flags); 230} 231 232krb5_error_code KRB5_LIB_FUNCTION 233krb5_auth_con_getaddrs(krb5_context context, 234 krb5_auth_context auth_context, 235 krb5_address **local_addr, 236 krb5_address **remote_addr) 237{ 238 if(*local_addr) 239 krb5_free_address (context, *local_addr); 240 *local_addr = malloc (sizeof(**local_addr)); 241 if (*local_addr == NULL) { 242 krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", "")); 243 return ENOMEM; 244 } 245 krb5_copy_address(context, 246 auth_context->local_address, 247 *local_addr); 248 249 if(*remote_addr) 250 krb5_free_address (context, *remote_addr); 251 *remote_addr = malloc (sizeof(**remote_addr)); 252 if (*remote_addr == NULL) { 253 krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", "")); 254 krb5_free_address (context, *local_addr); 255 *local_addr = NULL; 256 return ENOMEM; 257 } 258 krb5_copy_address(context, 259 auth_context->remote_address, 260 *remote_addr); 261 return 0; 262} 263 264static krb5_error_code 265copy_key(krb5_context context, 266 krb5_keyblock *in, 267 krb5_keyblock **out) 268{ 269 if(in) 270 return krb5_copy_keyblock(context, in, out); 271 *out = NULL; /* is this right? */ 272 return 0; 273} 274 275krb5_error_code KRB5_LIB_FUNCTION 276krb5_auth_con_getkey(krb5_context context, 277 krb5_auth_context auth_context, 278 krb5_keyblock **keyblock) 279{ 280 return copy_key(context, auth_context->keyblock, keyblock); 281} 282 283krb5_error_code KRB5_LIB_FUNCTION 284krb5_auth_con_getlocalsubkey(krb5_context context, 285 krb5_auth_context auth_context, 286 krb5_keyblock **keyblock) 287{ 288 return copy_key(context, auth_context->local_subkey, keyblock); 289} 290 291krb5_error_code KRB5_LIB_FUNCTION 292krb5_auth_con_getremotesubkey(krb5_context context, 293 krb5_auth_context auth_context, 294 krb5_keyblock **keyblock) 295{ 296 return copy_key(context, auth_context->remote_subkey, keyblock); 297} 298 299krb5_error_code KRB5_LIB_FUNCTION 300krb5_auth_con_setkey(krb5_context context, 301 krb5_auth_context auth_context, 302 krb5_keyblock *keyblock) 303{ 304 if(auth_context->keyblock) 305 krb5_free_keyblock(context, auth_context->keyblock); 306 return copy_key(context, keyblock, &auth_context->keyblock); 307} 308 309krb5_error_code KRB5_LIB_FUNCTION 310krb5_auth_con_setlocalsubkey(krb5_context context, 311 krb5_auth_context auth_context, 312 krb5_keyblock *keyblock) 313{ 314 if(auth_context->local_subkey) 315 krb5_free_keyblock(context, auth_context->local_subkey); 316 return copy_key(context, keyblock, &auth_context->local_subkey); 317} 318 319krb5_error_code KRB5_LIB_FUNCTION 320krb5_auth_con_generatelocalsubkey(krb5_context context, 321 krb5_auth_context auth_context, 322 krb5_keyblock *key) 323{ 324 krb5_error_code ret; 325 krb5_keyblock *subkey; 326 327 ret = krb5_generate_subkey_extended (context, key, 328 auth_context->keytype, 329 &subkey); 330 if(ret) 331 return ret; 332 if(auth_context->local_subkey) 333 krb5_free_keyblock(context, auth_context->local_subkey); 334 auth_context->local_subkey = subkey; 335 return 0; 336} 337 338 339krb5_error_code KRB5_LIB_FUNCTION 340krb5_auth_con_setremotesubkey(krb5_context context, 341 krb5_auth_context auth_context, 342 krb5_keyblock *keyblock) 343{ 344 if(auth_context->remote_subkey) 345 krb5_free_keyblock(context, auth_context->remote_subkey); 346 return copy_key(context, keyblock, &auth_context->remote_subkey); 347} 348 349krb5_error_code KRB5_LIB_FUNCTION 350krb5_auth_con_setcksumtype(krb5_context context, 351 krb5_auth_context auth_context, 352 krb5_cksumtype cksumtype) 353{ 354 auth_context->cksumtype = cksumtype; 355 return 0; 356} 357 358krb5_error_code KRB5_LIB_FUNCTION 359krb5_auth_con_getcksumtype(krb5_context context, 360 krb5_auth_context auth_context, 361 krb5_cksumtype *cksumtype) 362{ 363 *cksumtype = auth_context->cksumtype; 364 return 0; 365} 366 367krb5_error_code KRB5_LIB_FUNCTION 368krb5_auth_con_setkeytype (krb5_context context, 369 krb5_auth_context auth_context, 370 krb5_keytype keytype) 371{ 372 auth_context->keytype = keytype; 373 return 0; 374} 375 376krb5_error_code KRB5_LIB_FUNCTION 377krb5_auth_con_getkeytype (krb5_context context, 378 krb5_auth_context auth_context, 379 krb5_keytype *keytype) 380{ 381 *keytype = auth_context->keytype; 382 return 0; 383} 384 385#if 0 386krb5_error_code KRB5_LIB_FUNCTION 387krb5_auth_con_setenctype(krb5_context context, 388 krb5_auth_context auth_context, 389 krb5_enctype etype) 390{ 391 if(auth_context->keyblock) 392 krb5_free_keyblock(context, auth_context->keyblock); 393 ALLOC(auth_context->keyblock, 1); 394 if(auth_context->keyblock == NULL) 395 return ENOMEM; 396 auth_context->keyblock->keytype = etype; 397 return 0; 398} 399 400krb5_error_code KRB5_LIB_FUNCTION 401krb5_auth_con_getenctype(krb5_context context, 402 krb5_auth_context auth_context, 403 krb5_enctype *etype) 404{ 405 krb5_abortx(context, "unimplemented krb5_auth_getenctype called"); 406} 407#endif 408 409krb5_error_code KRB5_LIB_FUNCTION 410krb5_auth_con_getlocalseqnumber(krb5_context context, 411 krb5_auth_context auth_context, 412 int32_t *seqnumber) 413{ 414 *seqnumber = auth_context->local_seqnumber; 415 return 0; 416} 417 418krb5_error_code KRB5_LIB_FUNCTION 419krb5_auth_con_setlocalseqnumber (krb5_context context, 420 krb5_auth_context auth_context, 421 int32_t seqnumber) 422{ 423 auth_context->local_seqnumber = seqnumber; 424 return 0; 425} 426 427krb5_error_code KRB5_LIB_FUNCTION 428krb5_auth_getremoteseqnumber(krb5_context context, 429 krb5_auth_context auth_context, 430 int32_t *seqnumber) 431{ 432 *seqnumber = auth_context->remote_seqnumber; 433 return 0; 434} 435 436krb5_error_code KRB5_LIB_FUNCTION 437krb5_auth_con_setremoteseqnumber (krb5_context context, 438 krb5_auth_context auth_context, 439 int32_t seqnumber) 440{ 441 auth_context->remote_seqnumber = seqnumber; 442 return 0; 443} 444 445 446krb5_error_code KRB5_LIB_FUNCTION 447krb5_auth_con_getauthenticator(krb5_context context, 448 krb5_auth_context auth_context, 449 krb5_authenticator *authenticator) 450{ 451 *authenticator = malloc(sizeof(**authenticator)); 452 if (*authenticator == NULL) { 453 krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", "")); 454 return ENOMEM; 455 } 456 457 copy_Authenticator(auth_context->authenticator, 458 *authenticator); 459 return 0; 460} 461 462 463void KRB5_LIB_FUNCTION 464krb5_free_authenticator(krb5_context context, 465 krb5_authenticator *authenticator) 466{ 467 free_Authenticator (*authenticator); 468 free (*authenticator); 469 *authenticator = NULL; 470} 471 472 473krb5_error_code KRB5_LIB_FUNCTION 474krb5_auth_con_setuserkey(krb5_context context, 475 krb5_auth_context auth_context, 476 krb5_keyblock *keyblock) 477{ 478 if(auth_context->keyblock) 479 krb5_free_keyblock(context, auth_context->keyblock); 480 return krb5_copy_keyblock(context, keyblock, &auth_context->keyblock); 481} 482 483krb5_error_code KRB5_LIB_FUNCTION 484krb5_auth_con_getrcache(krb5_context context, 485 krb5_auth_context auth_context, 486 krb5_rcache *rcache) 487{ 488 *rcache = auth_context->rcache; 489 return 0; 490} 491 492krb5_error_code KRB5_LIB_FUNCTION 493krb5_auth_con_setrcache(krb5_context context, 494 krb5_auth_context auth_context, 495 krb5_rcache rcache) 496{ 497 auth_context->rcache = rcache; 498 return 0; 499} 500 501#if 0 /* not implemented */ 502 503krb5_error_code KRB5_LIB_FUNCTION 504krb5_auth_con_initivector(krb5_context context, 505 krb5_auth_context auth_context) 506{ 507 krb5_abortx(context, "unimplemented krb5_auth_con_initivector called"); 508} 509 510 511krb5_error_code KRB5_LIB_FUNCTION 512krb5_auth_con_setivector(krb5_context context, 513 krb5_auth_context auth_context, 514 krb5_pointer ivector) 515{ 516 krb5_abortx(context, "unimplemented krb5_auth_con_setivector called"); 517} 518 519#endif /* not implemented */ 520