| File: | aklog/aklog.c |
| Location: | line 1783, column 5 |
| Description: | Value stored to 'enctype' is never read |
| 1 | /* |
| 2 | * $Id$ |
| 3 | * |
| 4 | * Copyright 1990,1991 by the Massachusetts Institute of Technology |
| 5 | * For distribution and copying rights, see the file "mit-copyright.h" |
| 6 | */ |
| 7 | /* |
| 8 | * Copyright (c) 2005, 2006 |
| 9 | * The Linux Box Corporation |
| 10 | * ALL RIGHTS RESERVED |
| 11 | * |
| 12 | * Permission is granted to use, copy, create derivative works |
| 13 | * and redistribute this software and such derivative works |
| 14 | * for any purpose, so long as the name of the Linux Box |
| 15 | * Corporation is not used in any advertising or publicity |
| 16 | * pertaining to the use or distribution of this software |
| 17 | * without specific, written prior authorization. If the |
| 18 | * above copyright notice or any other identification of the |
| 19 | * Linux Box Corporation is included in any copy of any |
| 20 | * portion of this software, then the disclaimer below must |
| 21 | * also be included. |
| 22 | * |
| 23 | * This software is provided as is, without representation |
| 24 | * from the Linux Box Corporation as to its fitness for any |
| 25 | * purpose, and without warranty by the Linux Box Corporation |
| 26 | * of any kind, either express or implied, including |
| 27 | * without limitation the implied warranties of |
| 28 | * merchantability and fitness for a particular purpose. The |
| 29 | * regents of the Linux Box Corporation shall not be liable |
| 30 | * for any damages, including special, indirect, incidental, or |
| 31 | * consequential damages, with respect to any claim arising |
| 32 | * out of or in connection with the use of the software, even |
| 33 | * if it has been or is hereafter advised of the possibility of |
| 34 | * such damages. |
| 35 | */ |
| 36 | |
| 37 | #include <afsconfig.h> |
| 38 | #include <afs/param.h> |
| 39 | #include <afs/stds.h> |
| 40 | |
| 41 | #include <roken.h> |
| 42 | |
| 43 | #include <ctype.h> |
| 44 | |
| 45 | #include <afs/ktc.h> |
| 46 | #include <afs/token.h> |
| 47 | |
| 48 | #include <krb5.h> |
| 49 | #if defined(HAVE_ET_COM_ERR_H) |
| 50 | #include <et/com_err.h> |
| 51 | #else |
| 52 | #include <com_err.h> |
| 53 | #endif |
| 54 | |
| 55 | #ifndef HAVE_KERBEROSV_HEIM_ERR_H |
| 56 | #include <afs/com_err.h> |
| 57 | #endif |
| 58 | |
| 59 | #ifdef AFS_SUN5_ENV |
| 60 | #include <sys/ioccom.h> |
| 61 | #endif |
| 62 | |
| 63 | #include <afs/auth.h> |
| 64 | #include <afs/cellconfig.h> |
| 65 | #include <afs/vice.h> |
| 66 | #include <afs/venus.h> |
| 67 | #include <afs/ptserver.h> |
| 68 | #include <afs/ptuser.h> |
| 69 | #include <afs/pterror.h> |
| 70 | #include <afs/dirpath.h> |
| 71 | #include <afs/afsutil.h> |
| 72 | |
| 73 | #include "aklog.h" |
| 74 | #include "linked_list.h" |
| 75 | |
| 76 | #ifdef HAVE_KRB5_CREDS_KEYBLOCK |
| 77 | #define USING_MIT 1 |
| 78 | #endif |
| 79 | #ifdef HAVE_KRB5_CREDS_SESSION1 |
| 80 | #define USING_HEIMDAL1 1 |
| 81 | #endif |
| 82 | |
| 83 | #define AFSKEY"afs" "afs" |
| 84 | #define AFSINST"" "" |
| 85 | |
| 86 | #ifndef AFS_TRY_FULL_PRINC1 |
| 87 | #define AFS_TRY_FULL_PRINC1 1 |
| 88 | #endif /* AFS_TRY_FULL_PRINC */ |
| 89 | |
| 90 | #define AKLOG_TRYAGAIN-1 -1 |
| 91 | #define AKLOG_SUCCESS0 0 |
| 92 | #define AKLOG_USAGE1 1 |
| 93 | #define AKLOG_SOMETHINGSWRONG2 2 |
| 94 | #define AKLOG_AFS3 3 |
| 95 | #define AKLOG_KERBEROS4 4 |
| 96 | #define AKLOG_TOKEN5 5 |
| 97 | #define AKLOG_BADPATH6 6 |
| 98 | #define AKLOG_MISC7 7 |
| 99 | |
| 100 | #ifndef TRUE1 |
| 101 | #define TRUE1 1 |
| 102 | #endif |
| 103 | |
| 104 | #ifndef FALSE0 |
| 105 | #define FALSE0 0 |
| 106 | #endif |
| 107 | |
| 108 | #ifndef MAXSYMLINKS32 |
| 109 | /* RedHat 4.x doesn't seem to define this */ |
| 110 | #define MAXSYMLINKS32 5 |
| 111 | #endif |
| 112 | |
| 113 | #define DIR'/' '/' /* Character that divides directories */ |
| 114 | #define DIRSTRING"/" "/" /* String form of above */ |
| 115 | #define VOLMARKER':' ':' /* Character separating cellname from mntpt */ |
| 116 | #define VOLMARKERSTRING":" ":" /* String form of above */ |
| 117 | |
| 118 | typedef struct { |
| 119 | char cell[BUFSIZ1024]; |
| 120 | char realm[REALM_SZ40]; |
| 121 | } cellinfo_t; |
| 122 | |
| 123 | static krb5_ccache _krb425_ccache = NULL((void *)0); |
| 124 | |
| 125 | /* |
| 126 | * Why doesn't AFS provide these prototypes? |
| 127 | */ |
| 128 | |
| 129 | extern int pioctl(char *, afs_int32, struct ViceIoctl *, afs_int32); |
| 130 | |
| 131 | /* |
| 132 | * Other prototypes |
| 133 | */ |
| 134 | |
| 135 | extern char *afs_realm_of_cell(krb5_context, struct afsconf_cell *, int); |
| 136 | static int isdir(char *, unsigned char *); |
| 137 | static krb5_error_code get_credv5(krb5_context context, char *, char *, |
| 138 | char *, krb5_creds **); |
| 139 | static int get_user_realm(krb5_context, char **); |
| 140 | |
| 141 | #define TRYAGAIN(x)(x == -1 || x == KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN || x == KRB5KRB_ERR_GENERIC ) (x == AKLOG_TRYAGAIN-1 || \ |
| 142 | x == KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN || \ |
| 143 | x == KRB5KRB_ERR_GENERIC) |
| 144 | |
| 145 | #if defined(HAVE_KRB5_PRINC_SIZE) || defined(krb5_princ_size) |
| 146 | |
| 147 | #define get_princ_str(c, p, n)krb5_principal_get_comp_string(c, p, n) krb5_princ_component(c, p, n)->data |
| 148 | #define get_princ_len(c, p, n)strlen(krb5_principal_get_comp_string(c, p, n)) krb5_princ_component(c, p, n)->length |
| 149 | #define second_comp(c, p)(krb5_principal_get_comp_string(c, p, 1) != ((void *)0)) (krb5_princ_size(c, p) > 1) |
| 150 | #define realm_data(c, p)(krb5_principal_get_realm(c, p)) krb5_princ_realm(c, p)->data |
| 151 | #define realm_len(c, p)strlen(krb5_principal_get_realm(c, p)) krb5_princ_realm(c, p)->length |
| 152 | |
| 153 | #elif defined(HAVE_KRB5_PRINCIPAL_GET_COMP_STRING1) |
| 154 | |
| 155 | #define get_princ_str(c, p, n)krb5_principal_get_comp_string(c, p, n) krb5_principal_get_comp_string(c, p, n) |
| 156 | #define get_princ_len(c, p, n)strlen(krb5_principal_get_comp_string(c, p, n)) strlen(krb5_principal_get_comp_string(c, p, n)) |
| 157 | #define second_comp(c, p)(krb5_principal_get_comp_string(c, p, 1) != ((void *)0)) (krb5_principal_get_comp_string(c, p, 1) != NULL((void *)0)) |
| 158 | #define realm_data(c, p)(krb5_principal_get_realm(c, p)) krb5_realm_data(krb5_principal_get_realm(c, p))(krb5_principal_get_realm(c, p)) |
| 159 | #define realm_len(c, p)strlen(krb5_principal_get_realm(c, p)) krb5_realm_length(krb5_principal_get_realm(c, p))strlen(krb5_principal_get_realm(c, p)) |
| 160 | |
| 161 | #else |
| 162 | #error "Must have either krb5_princ_size or krb5_principal_get_comp_string" |
| 163 | #endif |
| 164 | |
| 165 | #if !defined(HAVE_KRB5_ENCRYPT_TKT_PART) && defined(HAVE_ENCODE_KRB5_ENC_TKT_PART) && defined(HAVE_KRB5_C_ENCRYPT1) |
| 166 | extern krb5_error_code encode_krb5_enc_tkt_part (const krb5_enc_tkt_part *rep, |
| 167 | krb5_data **code); |
| 168 | |
| 169 | krb5_error_code |
| 170 | krb5_encrypt_tkt_part(krb5_context context, |
| 171 | const krb5_keyblock *key, |
| 172 | krb5_ticket *ticket) |
| 173 | { |
| 174 | krb5_data *data = 0; |
| 175 | int code; |
| 176 | size_t enclen; |
| 177 | |
| 178 | if ((code = encode_krb5_enc_tkt_part(ticket->enc_part2, &data))) |
| 179 | goto Done; |
| 180 | if ((code = krb5_c_encrypt_length(context, key->enctype, |
| 181 | data->length, &enclen))) |
| 182 | goto Done; |
| 183 | ticket->enc_part.ciphertext.length = enclen; |
| 184 | if (!(ticket->enc_part.ciphertext.data = malloc(enclen))) { |
| 185 | code = ENOMEM12; |
| 186 | goto Done; |
| 187 | } |
| 188 | if ((code = krb5_c_encrypt(context, key, KRB5_KEYUSAGE_KDC_REP_TICKET, |
| 189 | 0, data, &ticket->enc_part))) { |
| 190 | free(ticket->enc_part.ciphertext.data); |
| 191 | ticket->enc_part.ciphertext.data = 0; |
| 192 | } |
| 193 | Done: |
| 194 | if (data) { |
| 195 | if (data->data) |
| 196 | free(data->data); |
| 197 | free(data); |
| 198 | } |
| 199 | return code; |
| 200 | } |
| 201 | #endif |
| 202 | |
| 203 | #if defined(HAVE_KRB5_CREDS_KEYBLOCK) |
| 204 | |
| 205 | #define get_cred_keydata(c)c->session.keyvalue.data c->keyblock.contents |
| 206 | #define get_cred_keylen(c)c->session.keyvalue.length c->keyblock.length |
| 207 | #define get_creds_enctype(c)c->session.keytype c->keyblock.enctype |
| 208 | |
| 209 | #elif defined(HAVE_KRB5_CREDS_SESSION1) |
| 210 | |
| 211 | #define get_cred_keydata(c)c->session.keyvalue.data c->session.keyvalue.data |
| 212 | #define get_cred_keylen(c)c->session.keyvalue.length c->session.keyvalue.length |
| 213 | #define get_creds_enctype(c)c->session.keytype c->session.keytype |
| 214 | |
| 215 | #else |
| 216 | #error "Must have either keyblock or session member of krb5_creds" |
| 217 | #endif |
| 218 | |
| 219 | #ifdef AFS_DARWIN110_ENV |
| 220 | #define HAVE_NO_KRB5_524 /* MITKerberosShim logs but returns success */ |
| 221 | #elif !defined(HAVE_KRB5_524_CONVERT_CREDS) && defined(HAVE_KRB524_CONVERT_CREDS_KDC1) |
| 222 | #define krb5_524_convert_credskrb524_convert_creds_kdc krb524_convert_creds_kdc |
| 223 | #elif !defined(HAVE_KRB5_524_CONVERT_CREDS) && !defined(HAVE_KRB524_CONVERT_CREDS_KDC1) |
| 224 | #define HAVE_NO_KRB5_524 |
| 225 | #endif |
| 226 | |
| 227 | #if USING_HEIMDAL1 |
| 228 | #define deref_keyblock_enctype(kb)((kb)->keytype) \ |
| 229 | ((kb)->keytype) |
| 230 | |
| 231 | #define deref_entry_keyblock(entry)entry->keyblock \ |
| 232 | entry->keyblock |
| 233 | |
| 234 | #define deref_session_key(creds)creds->session \ |
| 235 | creds->session |
| 236 | |
| 237 | #define deref_enc_tkt_addrs(tkt)tkt->caddr \ |
| 238 | tkt->caddr |
| 239 | |
| 240 | #define deref_enc_length(enc)((enc)->cipher.length) \ |
| 241 | ((enc)->cipher.length) |
| 242 | |
| 243 | #define deref_enc_data(enc)((enc)->cipher.data) \ |
| 244 | ((enc)->cipher.data) |
| 245 | |
| 246 | #define krb5_free_keytab_entry_contentskrb5_kt_free_entry krb5_kt_free_entry |
| 247 | |
| 248 | #else |
| 249 | #define deref_keyblock_enctype(kb)((kb)->keytype) \ |
| 250 | ((kb)->enctype) |
| 251 | |
| 252 | #define deref_entry_keyblock(entry)entry->keyblock \ |
| 253 | entry->key |
| 254 | |
| 255 | #define deref_session_key(creds)creds->session \ |
| 256 | creds->keyblock |
| 257 | |
| 258 | #define deref_enc_tkt_addrs(tkt)tkt->caddr \ |
| 259 | tkt->caddrs |
| 260 | |
| 261 | #define deref_enc_length(enc)((enc)->cipher.length) \ |
| 262 | ((enc)->ciphertext.length) |
| 263 | |
| 264 | #define deref_enc_data(enc)((enc)->cipher.data) \ |
| 265 | ((enc)->ciphertext.data) |
| 266 | |
| 267 | #endif |
| 268 | |
| 269 | #define deref_entry_enctype(entry)((&entry->keyblock)->keytype) \ |
| 270 | deref_keyblock_enctype(&deref_entry_keyblock(entry))((&entry->keyblock)->keytype) |
| 271 | |
| 272 | /* |
| 273 | * Provide a replacement for strerror if we don't have it |
| 274 | */ |
| 275 | |
| 276 | #ifndef HAVE_STRERROR1 |
| 277 | extern char *sys_errlist[]; |
| 278 | #define strerror(x) sys_errlist[x] |
| 279 | #endif /* HAVE_STRERROR */ |
| 280 | |
| 281 | static char *progname = NULL((void *)0); /* Name of this program */ |
| 282 | static int dflag = FALSE0; /* Give debugging information */ |
| 283 | static int noauth = FALSE0; /* If true, don't try to get tokens */ |
| 284 | static int zsubs = FALSE0; /* Are we keeping track of zephyr subs? */ |
| 285 | static int hosts = FALSE0; /* Are we keeping track of hosts? */ |
| 286 | static int noprdb = FALSE0; /* Skip resolving name to id? */ |
| 287 | static int linked = FALSE0; /* try for both AFS nodes */ |
| 288 | static int afssetpag = FALSE0; /* setpag for AFS */ |
| 289 | static int force = FALSE0; /* Bash identical tokens? */ |
| 290 | static int do524 = FALSE0; /* Should we do 524 instead of rxkad2b? */ |
| 291 | static char *keytab = NULL((void *)0); /* keytab for akimpersonate */ |
| 292 | static char *client = NULL((void *)0); /* client principal for akimpersonate */ |
| 293 | static linked_list zsublist; /* List of zephyr subscriptions */ |
| 294 | static linked_list hostlist; /* List of host addresses */ |
| 295 | static linked_list authedcells; /* List of cells already logged to */ |
| 296 | |
| 297 | /* A com_error bodge. The idea here is that this routine lets us lookup |
| 298 | * things in the system com_err, if the AFS one just tells us the error |
| 299 | * is unknown |
| 300 | */ |
| 301 | |
| 302 | void |
| 303 | redirect_errors(const char *who, afs_int32 code, const char *fmt, va_list ap) |
| 304 | { |
| 305 | if (who) { |
| 306 | fputs(who, stderr__stderrp); |
| 307 | fputs(": ", stderr__stderrp); |
| 308 | } |
| 309 | if (code) { |
| 310 | const char *str = afs_error_message(code); |
| 311 | if (strncmp(str, "unknown", strlen("unknown")) == 0) { |
| 312 | #ifdef HAVE_KRB5_SVC_GET_MSG |
| 313 | krb5_svc_get_msg(code,&str); |
| 314 | #elif defined(HAVE_ERROR_MESSAGE) |
| 315 | str = error_message(code); |
| 316 | #else |
| 317 | ; /* IRIX apparently has neither: use the string we have */ |
| 318 | #endif |
| 319 | } |
| 320 | fputs(str, stderr__stderrp); |
| 321 | fputs(" ", stderr__stderrp); |
| 322 | #ifdef HAVE_KRB5_SVC_GET_MSG |
| 323 | krb5_free_string(str); |
| 324 | #endif |
| 325 | } |
| 326 | if (fmt) { |
| 327 | vfprintf(stderr__stderrp, fmt, ap); |
| 328 | } |
| 329 | putc('\n', stderr)(!__isthreaded ? __sputc('\n', __stderrp) : (putc)('\n', __stderrp )); |
| 330 | fflush(stderr__stderrp); |
| 331 | } |
| 332 | |
| 333 | static void |
| 334 | afs_dprintf(char *fmt, ...) { |
| 335 | va_list ap; |
| 336 | |
| 337 | va_start(ap, fmt)__builtin_va_start((ap), (fmt)); |
| 338 | if (dflag) |
| 339 | vprintf(fmt, ap); |
| 340 | va_end(ap)__builtin_va_end(ap); |
| 341 | } |
| 342 | |
| 343 | static char * |
| 344 | copy_cellinfo(cellinfo_t *cellinfo) |
| 345 | { |
| 346 | cellinfo_t *new_cellinfo; |
| 347 | |
| 348 | if ((new_cellinfo = (cellinfo_t *)malloc(sizeof(cellinfo_t)))) |
| 349 | memcpy(new_cellinfo, cellinfo, sizeof(cellinfo_t)); |
| 350 | |
| 351 | return ((char *)new_cellinfo); |
| 352 | } |
| 353 | |
| 354 | |
| 355 | static int |
| 356 | get_cellconfig(char *cell, struct afsconf_cell *cellconfig, char **local_cell) |
| 357 | { |
| 358 | int status = AKLOG_SUCCESS0; |
| 359 | struct afsconf_dir *configdir; |
| 360 | |
| 361 | memset(cellconfig, 0, sizeof(*cellconfig)); |
| 362 | |
| 363 | *local_cell = malloc(MAXCELLCHARS64); |
| 364 | if (*local_cell == NULL((void *)0)) { |
| 365 | fprintf(stderr__stderrp, "%s: can't allocate memory for local cell name\n", |
| 366 | progname); |
| 367 | exit(AKLOG_AFS3); |
| 368 | } |
| 369 | |
| 370 | if (!(configdir = afsconf_Open(AFSDIR_CLIENT_ETC_DIRPATHgetDirPath(AFSDIR_CLIENT_ETC_DIRPATH_ID)))) { |
| 371 | fprintf(stderr__stderrp, |
| 372 | "%s: can't get afs configuration (afsconf_Open(%s))\n", |
| 373 | progname, AFSDIR_CLIENT_ETC_DIRPATHgetDirPath(AFSDIR_CLIENT_ETC_DIRPATH_ID)); |
| 374 | exit(AKLOG_AFS3); |
| 375 | } |
| 376 | |
| 377 | if (afsconf_GetLocalCell(configdir, *local_cell, MAXCELLCHARS64)) { |
| 378 | fprintf(stderr__stderrp, "%s: can't determine local cell.\n", progname); |
| 379 | exit(AKLOG_AFS3); |
| 380 | } |
| 381 | |
| 382 | if ((cell == NULL((void *)0)) || (cell[0] == 0)) |
| 383 | cell = *local_cell; |
| 384 | |
| 385 | /* XXX - This function modifies 'cell' by passing it through lcstring */ |
| 386 | if (afsconf_GetCellInfo(configdir, cell, NULL((void *)0), cellconfig)) { |
| 387 | fprintf(stderr__stderrp, "%s: Can't get information about cell %s.\n", |
| 388 | progname, cell); |
| 389 | status = AKLOG_AFS3; |
| 390 | } |
| 391 | |
| 392 | afsconf_Close(configdir); |
| 393 | |
| 394 | return(status); |
| 395 | } |
| 396 | |
| 397 | static char * |
| 398 | extract_realm(krb5_context context, krb5_principal princ) { |
| 399 | int len; |
| 400 | char *realm; |
| 401 | |
| 402 | len = realm_len(context, princ)strlen(krb5_principal_get_realm(context, princ)); |
| 403 | if (len > REALM_SZ40-1) |
| 404 | len = REALM_SZ40-1; |
| 405 | |
| 406 | realm = malloc(sizeof(char) * (len+1)); |
| 407 | if (realm == NULL((void *)0)) |
| 408 | return NULL((void *)0); |
| 409 | |
| 410 | strncpy(realm, realm_data(context, princ)(krb5_principal_get_realm(context, princ)), len); |
| 411 | realm[len] = '\0'; |
| 412 | |
| 413 | return realm; |
| 414 | } |
| 415 | |
| 416 | static int |
| 417 | get_realm_from_cred(krb5_context context, krb5_creds *v5cred, char **realm) { |
| 418 | #if !defined(HEIMDAL) && defined(HAVE_KRB5_DECODE_TICKET) |
| 419 | krb5_error_code code; |
| 420 | krb5_ticket *ticket; |
| 421 | |
| 422 | *realm = NULL((void *)0); |
| 423 | |
| 424 | code = krb5_decode_ticket(&v5cred->ticket, &ticket); |
| 425 | if (code) |
| 426 | return code; |
| 427 | |
| 428 | *realm = extract_realm(context, ticket->server); |
| 429 | if (*realm == NULL((void *)0)) |
| 430 | code = ENOMEM12; |
| 431 | |
| 432 | krb5_free_ticket(context, ticket); |
| 433 | |
| 434 | return code; |
| 435 | #else |
| 436 | *realm = NULL((void *)0); |
| 437 | return 0; |
| 438 | #endif |
| 439 | } |
| 440 | |
| 441 | /*! |
| 442 | * Get a Kerberos service ticket to use as the base of an rxkad token for |
| 443 | * a given AFS cell. |
| 444 | * |
| 445 | * @param[in] context |
| 446 | * An initialized Kerberos v5 context |
| 447 | * @param[in] realm |
| 448 | * The realm to look in for the service principal. If NULL, then the |
| 449 | * realm is determined from the cell name or the user's credentials |
| 450 | * (see below for the heuristics used) |
| 451 | * @param[in] cell |
| 452 | * The cell information for the cell to obtain a ticket for |
| 453 | * @param[out] v5cred |
| 454 | * A Kerberos credentials structure containing the ticket acquired |
| 455 | * for the cell. This is a dynamically allocated structure, which |
| 456 | * should be freed by using the appropriate Kerberos API function. |
| 457 | * @param[out] realmUsed |
| 458 | * The realm in which the cell's service principal was located. If |
| 459 | * unset, then the principal was located in the same realm as the |
| 460 | * current user. This is a malloc'd string which should be freed |
| 461 | * by the caller. |
| 462 | * |
| 463 | * @returns |
| 464 | * 0 on success, an error value upon failure |
| 465 | * |
| 466 | * @notes |
| 467 | * This code tries principals in the following, much debated, |
| 468 | * order: |
| 469 | * |
| 470 | * If the realm is specified on the command line we do |
| 471 | * - afs/cell@COMMAND-LINE-REALM |
| 472 | * - afs@COMMAND-LINE-REALM |
| 473 | * |
| 474 | * Otherwise, we do |
| 475 | * - afs/cell@REALM-FROM-USERS-PRINCIPAL |
| 476 | * - afs/cell@krb5_get_host_realm(db-server) |
| 477 | * Then, if krb5_get_host_realm(db-server) is non-empty |
| 478 | * - afs@ krb5_get_host_realm(db-server) |
| 479 | * Otherwise |
| 480 | * - afs/cell@ upper-case-domain-of-db-server |
| 481 | * - afs@ upper-case-domain-of-db-server |
| 482 | * |
| 483 | * In all cases, the 'afs@' variant is only tried where the |
| 484 | * cell and the realm match case-insensitively. |
| 485 | */ |
| 486 | |
| 487 | static int |
| 488 | rxkad_get_ticket(krb5_context context, char *realm, |
| 489 | struct afsconf_cell *cell, |
| 490 | krb5_creds **v5cred, char **realmUsed) { |
| 491 | char *realm_of_cell = NULL((void *)0); |
| 492 | char *realm_of_user = NULL((void *)0); |
| 493 | char *realm_from_princ = NULL((void *)0); |
| 494 | int status; |
| 495 | int retry; |
| 496 | |
| 497 | *realmUsed = NULL((void *)0); |
| 498 | |
| 499 | if ((status = get_user_realm(context, &realm_of_user))) { |
| 500 | fprintf(stderr__stderrp, "%s: Couldn't determine realm of user:", progname); |
| 501 | afs_com_err(progname, status, " while getting realm"); |
| 502 | status = AKLOG_KERBEROS4; |
| 503 | goto out; |
| 504 | } |
| 505 | |
| 506 | retry = 1; |
| 507 | |
| 508 | while(retry) { |
| 509 | /* Cell on command line - use that one */ |
| 510 | if (realm && realm[0]) { |
| 511 | realm_of_cell = realm; |
| 512 | status = AKLOG_TRYAGAIN-1; |
| 513 | afs_dprintf("We were told to authenticate to realm %s.\n", realm); |
| 514 | } else { |
| 515 | /* Initially, try using afs/cell@USERREALM */ |
| 516 | afs_dprintf("Trying to authenticate to user's realm %s.\n", |
| 517 | realm_of_user); |
| 518 | realm_of_cell = realm_of_user; |
| 519 | status = get_credv5(context, AFSKEY"afs", cell->name, realm_of_cell, |
| 520 | v5cred); |
| 521 | |
| 522 | /* If that failed, try to determine the realm from the name of |
| 523 | * one of the DB servers */ |
| 524 | if (TRYAGAIN(status)(status == -1 || status == KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN || status == KRB5KRB_ERR_GENERIC)) { |
| 525 | realm_of_cell = afs_realm_of_cell(context, cell, FALSE0); |
| 526 | if (!realm_of_cell) { |
| 527 | fprintf(stderr__stderrp, "%s: Couldn't figure out realm for cell " |
| 528 | "%s.\n", progname, cell->name); |
| 529 | exit(AKLOG_MISC7); |
| 530 | } |
| 531 | |
| 532 | if (realm_of_cell[0]) |
| 533 | afs_dprintf("We've deduced that we need to authenticate" |
| 534 | " to realm %s.\n", realm_of_cell); |
| 535 | else |
| 536 | afs_dprintf("We've deduced that we need to authenticate " |
| 537 | "using referrals.\n"); |
| 538 | } |
| 539 | } |
| 540 | |
| 541 | if (TRYAGAIN(status)(status == -1 || status == KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN || status == KRB5KRB_ERR_GENERIC)) { |
| 542 | /* If we've got the full-princ-first option, or we're in a |
| 543 | * different realm from the cell - use the cell name as the |
| 544 | * instance */ |
| 545 | if (AFS_TRY_FULL_PRINC1 || |
| 546 | strcasecmp(cell->name, realm_of_cell)!=0) { |
| 547 | status = get_credv5(context, AFSKEY"afs", cell->name, |
| 548 | realm_of_cell, v5cred); |
| 549 | |
| 550 | /* If we failed & we've got an empty realm, then try |
| 551 | * calling afs_realm_for_cell again. */ |
| 552 | if (TRYAGAIN(status)(status == -1 || status == KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN || status == KRB5KRB_ERR_GENERIC) && !realm_of_cell[0]) { |
| 553 | /* This time, get the realm by taking the domain |
| 554 | * component of the db server and make it upper case */ |
| 555 | realm_of_cell = afs_realm_of_cell(context, cell, TRUE1); |
| 556 | if (!realm_of_cell) { |
| 557 | fprintf(stderr__stderrp, |
| 558 | "%s: Couldn't figure out realm for cell %s.\n", |
| 559 | progname, cell->name); |
| 560 | exit(AKLOG_MISC7); |
| 561 | } |
| 562 | afs_dprintf("We've deduced that we need to authenticate" |
| 563 | " to realm %s.\n", realm_of_cell); |
| 564 | } |
| 565 | status = get_credv5(context, AFSKEY"afs", cell->name, |
| 566 | realm_of_cell, v5cred); |
| 567 | } |
| 568 | |
| 569 | /* If the realm and cell name match, then try without an |
| 570 | * instance, but only if realm is non-empty */ |
| 571 | |
| 572 | if (TRYAGAIN(status)(status == -1 || status == KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN || status == KRB5KRB_ERR_GENERIC) && |
| 573 | strcasecmp(cell->name, realm_of_cell) == 0) { |
| 574 | status = get_credv5(context, AFSKEY"afs", NULL((void *)0), realm_of_cell, |
| 575 | v5cred); |
| 576 | if (!AFS_TRY_FULL_PRINC1 && TRYAGAIN(status)(status == -1 || status == KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN || status == KRB5KRB_ERR_GENERIC)) { |
| 577 | status = get_credv5(context, AFSKEY"afs", cell->name, |
| 578 | realm_of_cell, v5cred); |
| 579 | } |
| 580 | } |
| 581 | } |
| 582 | |
| 583 | /* Try to find a service principal for this cell. |
| 584 | * Some broken MIT libraries return KRB5KRB_AP_ERR_MSG_TYPE upon |
| 585 | * the first attempt, so we try twice to be sure */ |
| 586 | |
| 587 | if (status == KRB5KRB_AP_ERR_MSG_TYPE && retry == 1) |
| 588 | retry++; |
| 589 | else |
| 590 | retry = 0; |
| 591 | } |
| 592 | |
| 593 | if (status != 0) { |
| 594 | afs_dprintf("Kerberos error code returned by get_cred : %d\n", status); |
| 595 | fprintf(stderr__stderrp, "%s: Couldn't get %s AFS tickets:\n", |
| 596 | progname, cell->name); |
| 597 | afs_com_err(progname, status, "while getting AFS tickets"); |
| 598 | #ifdef KRB5_CC_NOT_KTYPE |
| 599 | if (status == KRB5_CC_NOT_KTYPE) { |
| 600 | fprintf(stderr__stderrp, "allow_weak_enctypes may be required in the Kerberos configuration\n"); |
| 601 | } |
| 602 | #endif |
| 603 | status = AKLOG_KERBEROS4; |
| 604 | goto out; |
| 605 | } |
| 606 | |
| 607 | /* If we've got a valid ticket, and we still don't know the realm name |
| 608 | * try to figure it out from the contents of the ticket |
| 609 | */ |
| 610 | if (strcmp(realm_of_cell, "") == 0) { |
| 611 | status = get_realm_from_cred(context, *v5cred, &realm_from_princ); |
| 612 | if (status) { |
| 613 | fprintf(stderr__stderrp, |
| 614 | "%s: Couldn't decode ticket to determine realm for " |
| 615 | "cell %s.\n", |
| 616 | progname, cell->name); |
| 617 | } else { |
| 618 | if (realm_from_princ) |
| 619 | realm_of_cell = realm_from_princ; |
| 620 | } |
| 621 | } |
| 622 | |
| 623 | /* If the realm of the user and cell differ, then we need to use the |
| 624 | * realm when we later construct the user's principal */ |
| 625 | if (realm_of_cell != NULL((void *)0) && strcmp(realm_of_user, realm_of_cell) != 0) |
| 626 | *realmUsed = realm_of_user; |
| 627 | |
| 628 | out: |
| 629 | if (realm_from_princ) |
| 630 | free(realm_from_princ); |
| 631 | if (realm_of_user && *realmUsed == NULL((void *)0)) |
| 632 | free(realm_of_user); |
| 633 | |
| 634 | return status; |
| 635 | } |
| 636 | |
| 637 | /*! |
| 638 | * Build an rxkad token from a Kerberos ticket, using only local tools (that |
| 639 | * is, without using a 524 conversion service) |
| 640 | * |
| 641 | * @param[in] context |
| 642 | * An initialised Kerberos 5 context |
| 643 | * @param[in] v5cred |
| 644 | * A Kerberos credentials structure containing a suitable service ticket |
| 645 | * @param[out] tokenPtr |
| 646 | * An AFS token structure containing an rxkad token. This is a malloc'd |
| 647 | * structure which should be freed by the caller. |
| 648 | * @param[out[ userPtr |
| 649 | * A string containing the principal of the user to whom the token was |
| 650 | * issued. This is a malloc'd block which should be freed by the caller. |
| 651 | * |
| 652 | * @returns |
| 653 | * 0 on success, an error value upon failure |
| 654 | */ |
| 655 | static int |
| 656 | rxkad_build_native_token(krb5_context context, krb5_creds *v5cred, |
| 657 | struct ktc_tokenUnion **tokenPtr, char **userPtr) { |
| 658 | char username[BUFSIZ1024]; |
| 659 | struct ktc_tokenUnion *token; |
| 660 | struct token_rxkad *rxkadToken; |
| 661 | #ifdef HAVE_NO_KRB5_524 |
| 662 | char *p; |
| 663 | int len; |
| 664 | #else |
| 665 | int status; |
| 666 | char k4name[ANAME_SZ40]; |
| 667 | char k4inst[INST_SZ40]; |
| 668 | char k4realm[REALM_SZ40]; |
| 669 | #endif |
| 670 | |
| 671 | afs_dprintf("Using Kerberos V5 ticket natively\n"); |
| 672 | |
| 673 | *tokenPtr = NULL((void *)0); |
| 674 | *userPtr = NULL((void *)0); |
| 675 | |
| 676 | #ifndef HAVE_NO_KRB5_524 |
| 677 | status = krb5_524_conv_principal (context, v5cred->client, |
| 678 | (char *) &k4name, |
| 679 | (char *) &k4inst, |
| 680 | (char *) &k4realm); |
| 681 | if (status) { |
| 682 | afs_com_err(progname, status, "while converting principal " |
| 683 | "to Kerberos V4 format"); |
| 684 | return AKLOG_KERBEROS4; |
| 685 | } |
| 686 | strcpy (username, k4name); |
| 687 | if (k4inst[0]) { |
| 688 | strcat (username, "."); |
| 689 | strcat (username, k4inst); |
| 690 | } |
| 691 | #else |
| 692 | len = min(get_princ_len(context, v5cred->client, 0),(((strlen(krb5_principal_get_comp_string(context, v5cred-> client, 0))) < ((krb5_principal_get_comp_string(context, v5cred ->client, 1) != ((void *)0)) ? 64 - 2 : 64 - 1)) ? (strlen (krb5_principal_get_comp_string(context, v5cred->client, 0 ))) : ((krb5_principal_get_comp_string(context, v5cred->client , 1) != ((void *)0)) ? 64 - 2 : 64 - 1)) |
| 693 | second_comp(context, v5cred->client) ?(((strlen(krb5_principal_get_comp_string(context, v5cred-> client, 0))) < ((krb5_principal_get_comp_string(context, v5cred ->client, 1) != ((void *)0)) ? 64 - 2 : 64 - 1)) ? (strlen (krb5_principal_get_comp_string(context, v5cred->client, 0 ))) : ((krb5_principal_get_comp_string(context, v5cred->client , 1) != ((void *)0)) ? 64 - 2 : 64 - 1)) |
| 694 | MAXKTCNAMELEN - 2 : MAXKTCNAMELEN - 1)(((strlen(krb5_principal_get_comp_string(context, v5cred-> client, 0))) < ((krb5_principal_get_comp_string(context, v5cred ->client, 1) != ((void *)0)) ? 64 - 2 : 64 - 1)) ? (strlen (krb5_principal_get_comp_string(context, v5cred->client, 0 ))) : ((krb5_principal_get_comp_string(context, v5cred->client , 1) != ((void *)0)) ? 64 - 2 : 64 - 1)); |
| 695 | strncpy(username, get_princ_str(context, v5cred->client, 0)krb5_principal_get_comp_string(context, v5cred->client, 0), len); |
| 696 | username[len] = '\0'; |
| 697 | |
| 698 | if (second_comp(context, v5cred->client)(krb5_principal_get_comp_string(context, v5cred->client, 1 ) != ((void *)0))) { |
| 699 | strcat(username, "."); |
| 700 | p = username + strlen(username); |
| 701 | len = min(get_princ_len(context, v5cred->client, 1),(((strlen(krb5_principal_get_comp_string(context, v5cred-> client, 1))) < (64 - strlen(username) - 1)) ? (strlen(krb5_principal_get_comp_string (context, v5cred->client, 1))) : (64 - strlen(username) - 1 )) |
| 702 | MAXKTCNAMELEN - strlen(username) - 1)(((strlen(krb5_principal_get_comp_string(context, v5cred-> client, 1))) < (64 - strlen(username) - 1)) ? (strlen(krb5_principal_get_comp_string (context, v5cred->client, 1))) : (64 - strlen(username) - 1 )); |
| 703 | strncpy(p, get_princ_str(context, v5cred->client, 1)krb5_principal_get_comp_string(context, v5cred->client, 1), len); |
| 704 | p[len] = '\0'; |
| 705 | } |
| 706 | #endif |
| 707 | |
| 708 | token = malloc(sizeof(struct ktc_tokenUnion)); |
| 709 | if (token == NULL((void *)0)) |
| 710 | return ENOMEM12; |
| 711 | |
| 712 | memset(token, 0, sizeof(struct ktc_tokenUnion)); |
| 713 | |
| 714 | token->at_type = AFSTOKEN_UNION_KAD2; |
| 715 | rxkadToken = &token->ktc_tokenUnion_u.at_kad; |
| 716 | |
| 717 | rxkadToken->rk_kvno = RXKAD_TKT_TYPE_KERBEROS_V5256; |
| 718 | rxkadToken->rk_begintime = v5cred->times.starttime;; |
| 719 | rxkadToken->rk_endtime = v5cred->times.endtime; |
| 720 | memcpy(&rxkadToken->rk_key, get_cred_keydata(v5cred)v5cred->session.keyvalue.data, |
| 721 | get_cred_keylen(v5cred)v5cred->session.keyvalue.length); |
| 722 | rxkadToken->rk_ticket.rk_ticket_len = v5cred->ticket.length; |
| 723 | rxkadToken->rk_ticket.rk_ticket_val = malloc(v5cred->ticket.length); |
| 724 | if (rxkadToken->rk_ticket.rk_ticket_val == NULL((void *)0)) { |
| 725 | free(token); |
| 726 | return ENOMEM12; |
| 727 | } |
| 728 | memcpy(rxkadToken->rk_ticket.rk_ticket_val, v5cred->ticket.data, |
| 729 | rxkadToken->rk_ticket.rk_ticket_len); |
| 730 | |
| 731 | *tokenPtr = token; |
| 732 | *userPtr = strdup(username); |
| 733 | |
| 734 | return 0; |
| 735 | } |
| 736 | |
| 737 | /*! |
| 738 | * Convert a Keberos ticket to an rxkad token, using information obtained |
| 739 | * from an external Kerberos 5->4 conversion service. If the code is built |
| 740 | * with HAVE_NO_KRB5_524 then this is a stub function which will always |
| 741 | * return success without a token. |
| 742 | * |
| 743 | * @param[in] context |
| 744 | * An initialised Kerberos 5 context |
| 745 | * @param[in] v5cred |
| 746 | * A Kerberos credentials structure containing a suitable service ticket |
| 747 | * @param[out] tokenPtr |
| 748 | * An AFS token structure containing an rxkad token. This is a malloc'd |
| 749 | * structure which should be freed by the caller. |
| 750 | * @param[out[ userPtr |
| 751 | * A string containing the principal of the user to whom the token was |
| 752 | * issued. This is a malloc'd block which should be freed by the caller. |
| 753 | * |
| 754 | * @returns |
| 755 | * 0 on success, an error value upon failure |
| 756 | */ |
| 757 | |
| 758 | #ifdef HAVE_NO_KRB5_524 |
| 759 | static int |
| 760 | rxkad_get_converted_token(krb5_context context, krb5_creds *v5cred, |
| 761 | struct ktc_tokenUnion **tokenPtr, char **userPtr) { |
| 762 | *tokenPtr = NULL((void *)0); |
| 763 | *userPtr = NULL((void *)0); |
| 764 | |
| 765 | return 0; |
| 766 | } |
| 767 | #else |
| 768 | static int |
| 769 | rxkad_get_converted_token(krb5_context context, krb5_creds *v5cred, |
| 770 | struct ktc_tokenUnion **tokenPtr, char **userPtr) { |
| 771 | CREDENTIALS cred; |
| 772 | char username[BUFSIZ1024]; |
| 773 | struct ktc_tokenUnion *token; |
| 774 | struct token_rxkad *rxkadToken; |
| 775 | int status; |
| 776 | |
| 777 | *tokenPtr = NULL((void *)0); |
| 778 | *userPtr = NULL((void *)0); |
| 779 | |
| 780 | afs_dprintf("Using Kerberos 524 translator service\n"); |
| 781 | |
| 782 | status = krb5_524_convert_credskrb524_convert_creds_kdc(context, v5cred, &cred); |
| 783 | |
| 784 | if (status) { |
| 785 | afs_com_err(progname, status, "while converting tickets " |
| 786 | "to Kerberos V4 format"); |
| 787 | return AKLOG_KERBEROS4; |
| 788 | } |
| 789 | |
| 790 | strcpy (username, cred.pname); |
| 791 | if (cred.pinst[0]) { |
| 792 | strcat (username, "."); |
| 793 | strcat (username, cred.pinst); |
| 794 | } |
| 795 | |
| 796 | token = malloc(sizeof(struct ktc_tokenUnion)); |
| 797 | if (token == NULL((void *)0)) |
| 798 | return ENOMEM12; |
| 799 | memset(token, 0, sizeof(struct ktc_tokenUnion)); |
| 800 | |
| 801 | token->at_type = AFSTOKEN_UNION_KAD2; |
| 802 | |
| 803 | rxkadToken = &token->ktc_tokenUnion_u.at_kad; |
| 804 | rxkadToken->rk_kvno = cred.kvno; |
| 805 | rxkadToken->rk_begintime = cred.issue_date; |
| 806 | /* |
| 807 | * It seems silly to go through a bunch of contortions to |
| 808 | * extract the expiration time, when the v5 credentials already |
| 809 | * has the exact time! Let's use that instead. |
| 810 | * |
| 811 | * Note that this isn't a security hole, as the expiration time |
| 812 | * is also contained in the encrypted token |
| 813 | */ |
| 814 | rxkadToken->rk_endtime = v5cred->times.endtime; |
| 815 | memcpy(&rxkadToken->rk_key, cred.session, 8); |
| 816 | rxkadToken->rk_ticket.rk_ticket_len = cred.ticket_st.length; |
| 817 | rxkadToken->rk_ticket.rk_ticket_val = malloc(cred.ticket_st.length); |
| 818 | if (rxkadToken->rk_ticket.rk_ticket_val == NULL((void *)0)) { |
| 819 | free(token); |
| 820 | return ENOMEM12; |
| 821 | } |
| 822 | memcpy(rxkadToken->rk_ticket.rk_ticket_val, cred.ticket_st.dat, |
| 823 | rxkadToken->rk_ticket.rk_ticket_len); |
| 824 | |
| 825 | *tokenPtr = token; |
| 826 | *userPtr = strdup(username); |
| 827 | |
| 828 | return 0; |
| 829 | } |
| 830 | #endif |
| 831 | |
| 832 | /*! |
| 833 | * This function gets an rxkad token for a given cell. |
| 834 | * |
| 835 | * @param[in] context |
| 836 | * An initialized Kerberos v5 context |
| 837 | * @param[in] cell |
| 838 | * The cell information for the cell which we're obtaining a token for |
| 839 | * @param[in] realm |
| 840 | * The realm to look in for the service principal. If NULL, then the |
| 841 | * realm is determined from the cell name or the user's credentials |
| 842 | * (see the documentation for rxkad_get_ticket) |
| 843 | * @param[out] token |
| 844 | * The rxkad token produced. This is a malloc'd structure which should |
| 845 | * be freed by the caller. |
| 846 | * @parma[out] authuser |
| 847 | * A string containing the principal of the user to whom the token was |
| 848 | * issued. This is a malloc'd block which should be freed by the caller. |
| 849 | * @param[out] foreign |
| 850 | * Whether the user is considered as 'foreign' to the realm of the cell. |
| 851 | * |
| 852 | * @returns |
| 853 | * 0 on success, an error value upon failuer |
| 854 | */ |
| 855 | static int |
| 856 | rxkad_get_token(krb5_context context, struct afsconf_cell *cell, char *realm, |
| 857 | struct ktc_tokenUnion **token, char **authuser, int *foreign) { |
| 858 | krb5_creds *v5cred; |
| 859 | char *realmUsed = NULL((void *)0); |
| 860 | char *username = NULL((void *)0); |
| 861 | int status; |
| 862 | size_t len; |
| 863 | |
| 864 | *token = NULL((void *)0); |
| 865 | *authuser = NULL((void *)0); |
| 866 | *foreign = 0; |
| 867 | |
| 868 | status = rxkad_get_ticket(context, realm, cell, &v5cred, &realmUsed); |
| 869 | if (status) |
| 870 | return status; |
| 871 | |
| 872 | if (do524) |
| 873 | status = rxkad_get_converted_token(context, v5cred, token, &username); |
| 874 | else |
| 875 | status = rxkad_build_native_token(context, v5cred, token, &username); |
| 876 | |
| 877 | if (status) |
| 878 | goto out; |
| 879 | |
| 880 | /* We now have the username, plus the realm name, so stitch them together |
| 881 | * to give us the name that the ptserver will know the user by */ |
| 882 | if (realmUsed == NULL((void *)0)) { |
| 883 | *authuser = username; |
| 884 | username = NULL((void *)0); |
| 885 | *foreign = 0; |
| 886 | } else { |
| 887 | len = strlen(username)+strlen(realmUsed)+2; |
| 888 | *authuser = malloc(len); |
| 889 | snprintf(*authuser, len, "%s@%s", username, realmUsed); |
| 890 | *foreign = 1; |
| 891 | } |
| 892 | |
| 893 | out: |
| 894 | if (realmUsed) |
| 895 | free(realmUsed); |
| 896 | if (username) |
| 897 | free(username); |
| 898 | |
| 899 | return status; |
| 900 | } |
| 901 | |
| 902 | /* |
| 903 | * Log to a cell. If the cell has already been logged to, return without |
| 904 | * doing anything. Otherwise, log to it and mark that it has been logged |
| 905 | * to. |
| 906 | */ |
| 907 | static int |
| 908 | auth_to_cell(krb5_context context, char *cell, char *realm, char **linkedcell) |
| 909 | { |
| 910 | int status = AKLOG_SUCCESS0; |
| 911 | int isForeign = 0; |
| 912 | char *username = NULL((void *)0); /* To hold client username structure */ |
| 913 | afs_int32 viceId; /* AFS uid of user */ |
| 914 | |
| 915 | char *local_cell = NULL((void *)0); |
| 916 | struct ktc_tokenUnion *rxkadToken = NULL((void *)0); |
| 917 | struct ktc_setTokenData *token; |
| 918 | struct ktc_setTokenData *btoken = NULL((void *)0); |
| 919 | struct afsconf_cell cellconf; |
| 920 | |
| 921 | /* NULL or empty cell returns information on local cell */ |
| 922 | if ((status = get_cellconfig(cell, &cellconf, &local_cell))) |
| 923 | return(status); |
| 924 | |
| 925 | if (linkedcell != NULL((void *)0)) { |
| 926 | if (cellconf.linkedCell != NULL((void *)0)) { |
| 927 | *linkedcell = strdup(cellconf.linkedCell); |
| 928 | if (*linkedcell == NULL((void *)0)) { |
| 929 | status = ENOMEM12; |
| 930 | goto out; |
| 931 | } |
| 932 | } else { |
| 933 | *linkedcell = NULL((void *)0); |
| 934 | } |
| 935 | } |
| 936 | |
| 937 | if (ll_string(&authedcells, ll_s_check, cellconf.name)) { |
| 938 | afs_dprintf("Already authenticated to %s (or tried to)\n", cellconf.name); |
| 939 | status = AKLOG_SUCCESS0; |
| 940 | goto out; |
| 941 | } |
| 942 | |
| 943 | /* |
| 944 | * Record that we have attempted to log to this cell. We do this |
| 945 | * before we try rather than after so that we will not try |
| 946 | * and fail repeatedly for one cell. |
| 947 | */ |
| 948 | ll_string(&authedcells, ll_s_add, cellconf.name); |
| 949 | |
| 950 | /* |
| 951 | * Record this cell in the list of zephyr subscriptions. We may |
| 952 | * want zephyr subscriptions even if authentication fails. |
| 953 | * If this is done after we attempt to get tokens, aklog -zsubs |
| 954 | * can return something different depending on whether or not we |
| 955 | * are in -noauth mode. |
| 956 | */ |
| 957 | if (ll_string(&zsublist, ll_s_add, cellconf.name) == LL_FAILURE-1) { |
| 958 | fprintf(stderr__stderrp, |
| 959 | "%s: failure adding cell %s to zephyr subscriptions list.\n", |
| 960 | progname, cellconf.name); |
| 961 | exit(AKLOG_MISC7); |
| 962 | } |
| 963 | if (ll_string(&zsublist, ll_s_add, local_cell) == LL_FAILURE-1) { |
| 964 | fprintf(stderr__stderrp, |
| 965 | "%s: failure adding cell %s to zephyr subscriptions list.\n", |
| 966 | progname, local_cell); |
| 967 | exit(AKLOG_MISC7); |
| 968 | } |
| 969 | |
| 970 | if (!noauth) { |
| 971 | afs_dprintf("Authenticating to cell %s (server %s).\n", cellconf.name, |
| 972 | cellconf.hostName[0]); |
| 973 | |
| 974 | token = token_buildTokenJar(cellconf.name); |
| 975 | if (token == NULL((void *)0)) { |
| 976 | status = ENOMEM12; |
| 977 | goto out; |
| 978 | } |
| 979 | |
| 980 | status = rxkad_get_token(context, &cellconf, realm, &rxkadToken, |
| 981 | &username, &isForeign); |
| 982 | if (status) |
| 983 | goto out; |
| 984 | |
| 985 | /* We need to keep the token structure around so that we can stick |
| 986 | * the viceId into it (once we know it) */ |
| 987 | status = token_addToken(token, rxkadToken); |
| 988 | if (status) { |
| 989 | afs_dprintf("Add Token failed with %d", status); |
| 990 | goto out; |
| 991 | } |
| 992 | |
| 993 | if (!force && |
| 994 | ktc_GetTokenEx(cellconf.name, &btoken) == 0 && |
| 995 | token_SetsEquivalent(token, btoken)) { |
| 996 | |
| 997 | token_FreeSet(&btoken); |
| 998 | afs_dprintf("Identical tokens already exist; skipping.\n"); |
| 999 | status = AKLOG_SUCCESS0; |
| 1000 | goto out; |
| 1001 | } |
| 1002 | |
| 1003 | if (btoken) |
| 1004 | token_FreeSet(&btoken); |
| 1005 | |
| 1006 | #ifdef FORCE_NOPRDB |
| 1007 | noprdb = 1; |
| 1008 | #endif |
| 1009 | |
| 1010 | if (noprdb) { |
| 1011 | afs_dprintf("Not resolving name %s to id (-noprdb set)\n", username); |
| 1012 | } |
| 1013 | else { |
| 1014 | afs_dprintf("About to resolve name %s to id in cell %s.\n", username, |
| 1015 | cellconf.name); |
| 1016 | |
| 1017 | if (!pr_Initialize (0, AFSDIR_CLIENT_ETC_DIRPATHgetDirPath(AFSDIR_CLIENT_ETC_DIRPATH_ID), cellconf.name)) |
| 1018 | status = pr_SNameToId (username, &viceId); |
| 1019 | |
| 1020 | if (status) |
| 1021 | afs_dprintf("Error %d\n", status); |
| 1022 | else |
| 1023 | afs_dprintf("Id %d\n", (int) viceId); |
| 1024 | |
| 1025 | |
| 1026 | /* |
| 1027 | * This code is taken from cklog -- it lets people |
| 1028 | * automatically register with the ptserver in foreign cells |
| 1029 | */ |
| 1030 | |
| 1031 | #ifdef ALLOW_REGISTER1 |
| 1032 | if ((status == 0) && (viceId == ANONYMOUSID32766) && isForeign) { |
| 1033 | afs_dprintf("doing first-time registration of %s at %s\n", |
| 1034 | username, cellconf.name); |
| 1035 | viceId = 0; |
| 1036 | |
| 1037 | status = ktc_SetTokenEx(token); |
| 1038 | if (status) { |
| 1039 | afs_com_err(progname, status, |
| 1040 | "while obtaining tokens for cell %s", |
| 1041 | cellconf.name); |
| 1042 | status = AKLOG_TOKEN5; |
| 1043 | } |
| 1044 | |
| 1045 | /* |
| 1046 | * In case you're wondering, we don't need to change the |
| 1047 | * filename here because we're still connecting to the |
| 1048 | * same cell -- we're just using a different authenticat ion |
| 1049 | * level |
| 1050 | */ |
| 1051 | |
| 1052 | if ((status = pr_Initialize(1L, AFSDIR_CLIENT_ETC_DIRPATHgetDirPath(AFSDIR_CLIENT_ETC_DIRPATH_ID), |
| 1053 | cellconf.name))) { |
| 1054 | printf("Error %d\n", status); |
| 1055 | } |
| 1056 | |
| 1057 | if ((status = pr_CreateUser(username, &viceId))) { |
| 1058 | fprintf(stderr__stderrp, "%s: %s so unable to create remote PTS " |
| 1059 | "user %s in cell %s (status: %d).\n", progname, |
| 1060 | afs_error_message(status), username, cellconf.name, |
| 1061 | status); |
| 1062 | viceId = ANONYMOUSID32766; |
| 1063 | } else { |
| 1064 | printf("created cross-cell entry for %s (Id %d) at %s\n", |
| 1065 | username, viceId, cellconf.name); |
| 1066 | } |
| 1067 | } |
| 1068 | #endif /* ALLOW_REGISTER */ |
| 1069 | |
| 1070 | if ((status == 0) && (viceId != ANONYMOUSID32766)) { |
| 1071 | rxkadToken->ktc_tokenUnion_u.at_kad.rk_viceid = viceId; |
| 1072 | token_replaceToken(token, rxkadToken); |
| 1073 | } |
| 1074 | } |
| 1075 | |
| 1076 | afs_dprintf("Setting tokens. %s @ %s \n", username, cellconf.name); |
| 1077 | |
| 1078 | #ifndef AFS_AIX51_ENV |
| 1079 | /* on AIX 4.1.4 with AFS 3.4a+ if a write is not done before |
| 1080 | * this routine, it will not add the token. It is not clear what |
| 1081 | * is going on here! So we will do the following operation. |
| 1082 | * On AIX 5, it causes the parent program to die, so we won't. |
| 1083 | */ |
| 1084 | write(2,"",0); /* dummy write */ |
| 1085 | #endif |
| 1086 | token_setPag(token, afssetpag); |
| 1087 | status = ktc_SetTokenEx(token); |
| 1088 | if (status) { |
| 1089 | afs_com_err(progname, status, "while setting tokens for cell %s", |
| 1090 | cellconf.name); |
| 1091 | status = AKLOG_TOKEN5; |
| 1092 | } |
| 1093 | } |
| 1094 | else |
| 1095 | afs_dprintf("Noauth mode; not authenticating.\n"); |
| 1096 | |
| 1097 | out: |
| 1098 | if (rxkadToken) { |
| 1099 | free(rxkadToken->ktc_tokenUnion_u.at_kad.rk_ticket.rk_ticket_val); |
| 1100 | free(rxkadToken); |
| 1101 | } |
| 1102 | |
| 1103 | if (local_cell) |
| 1104 | free(local_cell); |
| 1105 | if (username) |
| 1106 | free(username); |
| 1107 | |
| 1108 | return(status); |
| 1109 | } |
| 1110 | |
| 1111 | static int |
| 1112 | get_afs_mountpoint(char *file, char *mountpoint, int size) |
| 1113 | { |
| 1114 | #ifdef AFS_SUN_ENV |
| 1115 | char V ='V'; /* AFS has problem on Sun with pioctl */ |
| 1116 | #endif |
| 1117 | char our_file[MAXPATHLEN1024 + 1]; |
| 1118 | char *parent_dir; |
| 1119 | char *last_component; |
| 1120 | struct ViceIoctl vio; |
| 1121 | char cellname[BUFSIZ1024]; |
| 1122 | |
| 1123 | memset(our_file, 0, sizeof(our_file)); |
| 1124 | strcpy(our_file, file); |
| 1125 | |
| 1126 | if ((last_component = strrchr(our_file, DIR'/'))) { |
| 1127 | *last_component++ = 0; |
| 1128 | parent_dir = our_file; |
| 1129 | } |
| 1130 | else { |
| 1131 | last_component = our_file; |
| 1132 | parent_dir = "."; |
| 1133 | } |
| 1134 | |
| 1135 | memset(cellname, 0, sizeof(cellname)); |
| 1136 | |
| 1137 | vio.in = last_component; |
| 1138 | vio.in_size = strlen(last_component)+1; |
| 1139 | vio.out_size = size; |
| 1140 | vio.out = mountpoint; |
| 1141 | |
| 1142 | if (!pioctl(parent_dir, VIOC_AFS_STAT_MT_PT((unsigned int) ((unsigned long) ((0x80000000) | (((sizeof(struct ViceIoctl)) & ((1 << 13) - 1)) << 16) | ((('V' )) << 8) | ((29))))), &vio, 0)) { |
| 1143 | if (strchr(mountpoint, VOLMARKER':') == NULL((void *)0)) { |
| 1144 | vio.in = file; |
| 1145 | vio.in_size = strlen(file) + 1; |
| 1146 | vio.out_size = sizeof(cellname); |
| 1147 | vio.out = cellname; |
| 1148 | |
| 1149 | if (!pioctl(file, VIOC_FILE_CELL_NAME((unsigned int) ((unsigned long) ((0x80000000) | (((sizeof(struct ViceIoctl)) & ((1 << 13) - 1)) << 16) | ((('V' )) << 8) | ((30))))), &vio, 1)) { |
| 1150 | strcat(cellname, VOLMARKERSTRING":"); |
| 1151 | strcat(cellname, mountpoint + 1); |
| 1152 | memset(mountpoint + 1, 0, size - 1); |
| 1153 | strcpy(mountpoint + 1, cellname); |
| 1154 | } |
| 1155 | } |
| 1156 | return(TRUE1); |
| 1157 | } |
| 1158 | else |
| 1159 | return(FALSE0); |
| 1160 | } |
| 1161 | |
| 1162 | /* |
| 1163 | * This routine each time it is called returns the next directory |
| 1164 | * down a pathname. It resolves all symbolic links. The first time |
| 1165 | * it is called, it should be called with the name of the path |
| 1166 | * to be descended. After that, it should be called with the arguemnt |
| 1167 | * NULL. |
| 1168 | */ |
| 1169 | static char * |
| 1170 | next_path(char *origpath) |
| 1171 | { |
| 1172 | static char path[MAXPATHLEN1024 + 1]; |
| 1173 | static char pathtocheck[MAXPATHLEN1024 + 1]; |
| 1174 | |
| 1175 | int link = FALSE0; /* Is this a symbolic link? */ |
| 1176 | char linkbuf[MAXPATHLEN1024 + 1]; |
| 1177 | char tmpbuf[MAXPATHLEN1024 + 1]; |
| 1178 | |
| 1179 | static char *last_comp; /* last component of directory name */ |
| 1180 | static char *elast_comp; /* End of last component */ |
| 1181 | char *t; |
| 1182 | int len; |
| 1183 | |
| 1184 | static int symlinkcount = 0; /* We can't exceed MAXSYMLINKS */ |
| 1185 | |
| 1186 | /* If we are given something for origpath, we are initializing only. */ |
| 1187 | if (origpath) { |
| 1188 | memset(path, 0, sizeof(path)); |
| 1189 | memset(pathtocheck, 0, sizeof(pathtocheck)); |
| 1190 | strcpy(path, origpath); |
| 1191 | last_comp = path; |
| 1192 | symlinkcount = 0; |
| 1193 | return(NULL((void *)0)); |
| 1194 | } |
| 1195 | |
| 1196 | /* We were not given origpath; find then next path to check */ |
| 1197 | |
| 1198 | /* If we've gotten all the way through already, return NULL */ |
| 1199 | if (last_comp == NULL((void *)0)) |
| 1200 | return(NULL((void *)0)); |
| 1201 | |
| 1202 | do { |
| 1203 | while (*last_comp == DIR'/') |
| 1204 | strncat(pathtocheck, last_comp++, 1); |
| 1205 | len = (elast_comp = strchr(last_comp, DIR'/')) |
| 1206 | ? elast_comp - last_comp : strlen(last_comp); |
| 1207 | strncat(pathtocheck, last_comp, len); |
| 1208 | memset(linkbuf, 0, sizeof(linkbuf)); |
| 1209 | if ((link = (readlink(pathtocheck, linkbuf, |
| 1210 | sizeof(linkbuf)) > 0))) { |
| 1211 | if (++symlinkcount > MAXSYMLINKS32) { |
| 1212 | fprintf(stderr__stderrp, "%s: %s\n", progname, strerror(ELOOP62)); |
| 1213 | exit(AKLOG_BADPATH6); |
| 1214 | } |
| 1215 | memset(tmpbuf, 0, sizeof(tmpbuf)); |
| 1216 | if (elast_comp) |
| 1217 | strcpy(tmpbuf, elast_comp); |
| 1218 | if (linkbuf[0] == DIR'/') { |
| 1219 | /* |
| 1220 | * If this is a symbolic link to an absolute path, |
| 1221 | * replace what we have by the absolute path. |
| 1222 | */ |
| 1223 | memset(path, 0, strlen(path)); |
| 1224 | memcpy(path, linkbuf, sizeof(linkbuf)); |
| 1225 | strcat(path, tmpbuf); |
| 1226 | last_comp = path; |
| 1227 | elast_comp = NULL((void *)0); |
| 1228 | memset(pathtocheck, 0, sizeof(pathtocheck)); |
| 1229 | } |
| 1230 | else { |
| 1231 | /* |
| 1232 | * If this is a symbolic link to a relative path, |
| 1233 | * replace only the last component with the link name. |
| 1234 | */ |
| 1235 | strncpy(last_comp, linkbuf, strlen(linkbuf) + 1); |
| 1236 | strcat(path, tmpbuf); |
| 1237 | elast_comp = NULL((void *)0); |
| 1238 | if ((t = strrchr(pathtocheck, DIR'/'))) { |
| 1239 | t++; |
| 1240 | memset(t, 0, strlen(t)); |
| 1241 | } |
| 1242 | else |
| 1243 | memset(pathtocheck, 0, sizeof(pathtocheck)); |
| 1244 | } |
| 1245 | } |
| 1246 | else |
| 1247 | last_comp = elast_comp; |
| 1248 | } |
| 1249 | while(link); |
| 1250 | |
| 1251 | return(pathtocheck); |
| 1252 | } |
| 1253 | |
| 1254 | static void |
| 1255 | add_hosts(char *file) |
| 1256 | { |
| 1257 | #ifdef AFS_SUN_ENV |
| 1258 | char V = 'V'; /* AFS has problem on SunOS */ |
| 1259 | #endif |
| 1260 | struct ViceIoctl vio; |
| 1261 | char outbuf[BUFSIZ1024]; |
| 1262 | long *phosts; |
| 1263 | int i; |
| 1264 | struct hostent *hp; |
| 1265 | struct in_addr in; |
| 1266 | |
| 1267 | memset(outbuf, 0, sizeof(outbuf)); |
| 1268 | |
| 1269 | vio.out_size = sizeof(outbuf); |
| 1270 | vio.in_size = 0; |
| 1271 | vio.out = outbuf; |
| 1272 | |
| 1273 | afs_dprintf("Getting list of hosts for %s\n", file); |
| 1274 | |
| 1275 | /* Don't worry about errors. */ |
| 1276 | if (!pioctl(file, VIOCWHEREIS((unsigned int) ((unsigned long) ((0x80000000) | (((sizeof(struct ViceIoctl)) & ((1 << 13) - 1)) << 16) | ((('V' )) << 8) | ((14))))), &vio, 1)) { |
| 1277 | phosts = (long *) outbuf; |
| 1278 | |
| 1279 | /* |
| 1280 | * Lists hosts that we care about. If ALLHOSTS is defined, |
| 1281 | * then all hosts that you ever may possible go through are |
| 1282 | * included in this list. If not, then only hosts that are |
| 1283 | * the only ones appear. That is, if a volume you must use |
| 1284 | * is replaced on only one server, that server is included. |
| 1285 | * If it is replicated on many servers, then none are included. |
| 1286 | * This is not perfect, but the result is that people don't |
| 1287 | * get subscribed to a lot of instances of FILSRV that they |
| 1288 | * probably won't need which reduces the instances of |
| 1289 | * people getting messages that don't apply to them. |
| 1290 | */ |
| 1291 | #ifndef ALLHOSTS |
| 1292 | if (phosts[1] != '\0') |
| 1293 | return; |
| 1294 | #endif |
| 1295 | for (i = 0; phosts[i]; i++) { |
| 1296 | if (hosts) { |
| 1297 | in.s_addr = phosts[i]; |
| 1298 | afs_dprintf("Got host %s\n", inet_ntoa__inet_ntoa(in)); |
| 1299 | ll_string(&hostlist, ll_s_add, (char *)inet_ntoa__inet_ntoa(in)); |
| 1300 | } |
| 1301 | if (zsubs && (hp=gethostbyaddr((char *) &phosts[i],sizeof(long),AF_INET2))) { |
| 1302 | afs_dprintf("Got host %s\n", hp->h_name); |
| 1303 | ll_string(&zsublist, ll_s_add, hp->h_name); |
| 1304 | } |
| 1305 | } |
| 1306 | } |
| 1307 | } |
| 1308 | |
| 1309 | /* |
| 1310 | * This routine descends through a path to a directory, logging to |
| 1311 | * every cell it encounters along the way. |
| 1312 | */ |
| 1313 | static int |
| 1314 | auth_to_path(krb5_context context, char *path) |
| 1315 | { |
| 1316 | int status = AKLOG_SUCCESS0; |
| 1317 | int auth_status = AKLOG_SUCCESS0; |
| 1318 | |
| 1319 | char *nextpath; |
| 1320 | char pathtocheck[MAXPATHLEN1024 + 1]; |
| 1321 | char mountpoint[MAXPATHLEN1024 + 1]; |
| 1322 | |
| 1323 | char *cell; |
| 1324 | char *endofcell; |
| 1325 | |
| 1326 | u_char isdirectory; |
| 1327 | |
| 1328 | /* Initialize */ |
| 1329 | if (path[0] == DIR'/') |
| 1330 | strcpy(pathtocheck, path); |
| 1331 | else { |
| 1332 | if (getcwd(pathtocheck, sizeof(pathtocheck)) == NULL((void *)0)) { |
| 1333 | fprintf(stderr__stderrp, "Unable to find current working directory:\n"); |
| 1334 | fprintf(stderr__stderrp, "%s\n", pathtocheck); |
| 1335 | fprintf(stderr__stderrp, "Try an absolute pathname.\n"); |
| 1336 | exit(AKLOG_BADPATH6); |
| 1337 | } |
| 1338 | else { |
| 1339 | strcat(pathtocheck, DIRSTRING"/"); |
| 1340 | strcat(pathtocheck, path); |
| 1341 | } |
| 1342 | } |
| 1343 | next_path(pathtocheck); |
| 1344 | |
| 1345 | /* Go on to the next level down the path */ |
| 1346 | while ((nextpath = next_path(NULL((void *)0)))) { |
| 1347 | strcpy(pathtocheck, nextpath); |
| 1348 | afs_dprintf("Checking directory %s\n", pathtocheck); |
| 1349 | /* |
| 1350 | * If this is an afs mountpoint, determine what cell from |
| 1351 | * the mountpoint name which is of the form |
| 1352 | * #cellname:volumename or %cellname:volumename. |
| 1353 | */ |
| 1354 | if (get_afs_mountpoint(pathtocheck, mountpoint, sizeof(mountpoint))) { |
| 1355 | /* skip over the '#' or '%' */ |
| 1356 | cell = mountpoint + 1; |
| 1357 | /* Add this (cell:volumename) to the list of zsubs */ |
| 1358 | if (zsubs) |
| 1359 | ll_string(&zsublist, ll_s_add, cell); |
| 1360 | if (zsubs || hosts) |
| 1361 | add_hosts(pathtocheck); |
| 1362 | if ((endofcell = strchr(mountpoint, VOLMARKER':'))) { |
| 1363 | *endofcell = '\0'; |
| 1364 | if ((auth_status = auth_to_cell(context, cell, NULL((void *)0), NULL((void *)0)))) { |
| 1365 | if (status == AKLOG_SUCCESS0) |
| 1366 | status = auth_status; |
| 1367 | else if (status != auth_status) |
| 1368 | status = AKLOG_SOMETHINGSWRONG2; |
| 1369 | } |
| 1370 | } |
| 1371 | } |
| 1372 | else { |
| 1373 | if (isdir(pathtocheck, &isdirectory) < 0) { |
| 1374 | /* |
| 1375 | * If we've logged and still can't stat, there's |
| 1376 | * a problem... |
| 1377 | */ |
| 1378 | fprintf(stderr__stderrp, "%s: stat(%s): %s\n", progname, |
| 1379 | pathtocheck, strerror(errno(* __error()))); |
| 1380 | return(AKLOG_BADPATH6); |
| 1381 | } |
| 1382 | else if (! isdirectory) { |
| 1383 | /* Allow only directories */ |
| 1384 | fprintf(stderr__stderrp, "%s: %s: %s\n", progname, pathtocheck, |
| 1385 | strerror(ENOTDIR20)); |
| 1386 | return(AKLOG_BADPATH6); |
| 1387 | } |
| 1388 | } |
| 1389 | } |
| 1390 | |
| 1391 | |
| 1392 | return(status); |
| 1393 | } |
| 1394 | |
| 1395 | |
| 1396 | /* Print usage message and exit */ |
| 1397 | static void |
| 1398 | usage(void) |
| 1399 | { |
| 1400 | fprintf(stderr__stderrp, "\nUsage: %s %s%s%s\n", progname, |
| 1401 | "[-d] [[-cell | -c] cell [-k krb_realm]] ", |
| 1402 | "[[-p | -path] pathname]\n", |
| 1403 | " [-zsubs] [-hosts] [-noauth] [-noprdb] [-force] [-setpag] \n" |
| 1404 | " [-linked]" |
| 1405 | #ifndef HAVE_NO_KRB5_524 |
| 1406 | " [-524]" |
| 1407 | #endif |
| 1408 | "\n"); |
| 1409 | fprintf(stderr__stderrp, " -d gives debugging information.\n"); |
| 1410 | fprintf(stderr__stderrp, " krb_realm is the kerberos realm of a cell.\n"); |
| 1411 | fprintf(stderr__stderrp, " pathname is the name of a directory to which "); |
| 1412 | fprintf(stderr__stderrp, "you wish to authenticate.\n"); |
| 1413 | fprintf(stderr__stderrp, " -zsubs gives zephyr subscription information.\n"); |
| 1414 | fprintf(stderr__stderrp, " -hosts gives host address information.\n"); |
| 1415 | fprintf(stderr__stderrp, " -noauth does not attempt to get tokens.\n"); |
| 1416 | fprintf(stderr__stderrp, " -noprdb means don't try to determine AFS ID.\n"); |
| 1417 | fprintf(stderr__stderrp, " -force means replace identical tickets. \n"); |
| 1418 | fprintf(stderr__stderrp, " -linked means if AFS node is linked, try both. \n"); |
| 1419 | fprintf(stderr__stderrp, " -setpag set the AFS process authentication group.\n"); |
| 1420 | #ifndef HAVE_NO_KRB5_524 |
| 1421 | fprintf(stderr__stderrp, " -524 means use the 524 converter instead of V5 directly\n"); |
| 1422 | #endif |
| 1423 | fprintf(stderr__stderrp, " No commandline arguments means "); |
| 1424 | fprintf(stderr__stderrp, "authenticate to the local cell.\n"); |
| 1425 | fprintf(stderr__stderrp, "\n"); |
| 1426 | exit(AKLOG_USAGE1); |
| 1427 | } |
| 1428 | |
| 1429 | int |
| 1430 | main(int argc, char *argv[]) |
| 1431 | { |
| 1432 | krb5_context context; |
| 1433 | int status = AKLOG_SUCCESS0; |
| 1434 | int i; |
| 1435 | int somethingswrong = FALSE0; |
| 1436 | |
| 1437 | cellinfo_t cellinfo; |
| 1438 | |
| 1439 | extern char *progname; /* Name of this program */ |
| 1440 | |
| 1441 | int cmode = FALSE0; /* Cellname mode */ |
| 1442 | int pmode = FALSE0; /* Path name mode */ |
| 1443 | |
| 1444 | char realm[REALM_SZ40]; /* Kerberos realm of afs server */ |
| 1445 | char cell[BUFSIZ1024]; /* Cell to which we are authenticating */ |
| 1446 | char path[MAXPATHLEN1024 + 1]; /* Path length for path mode */ |
| 1447 | |
| 1448 | linked_list cells; /* List of cells to log to */ |
| 1449 | linked_list paths; /* List of paths to log to */ |
| 1450 | ll_node *cur_node; |
| 1451 | char *linkedcell; |
| 1452 | |
| 1453 | memset(&cellinfo, 0, sizeof(cellinfo)); |
| 1454 | |
| 1455 | memset(realm, 0, sizeof(realm)); |
| 1456 | memset(cell, 0, sizeof(cell)); |
| 1457 | memset(path, 0, sizeof(path)); |
| 1458 | |
| 1459 | ll_init(&cells); |
| 1460 | ll_init(&paths); |
| 1461 | |
| 1462 | ll_init(&zsublist); |
| 1463 | ll_init(&hostlist); |
| 1464 | |
| 1465 | /* Store the program name here for error messages */ |
| 1466 | if ((progname = strrchr(argv[0], DIR'/'))) |
| 1467 | progname++; |
| 1468 | else |
| 1469 | progname = argv[0]; |
| 1470 | |
| 1471 | krb5_init_context(&context); |
| 1472 | initialize_KTC_error_table (); |
| 1473 | initialize_U_error_table(); |
| 1474 | initialize_RXK_error_table(); |
| 1475 | initialize_ACFG_error_table(); |
| 1476 | initialize_PT_error_table(); |
| 1477 | afs_set_com_err_hook(redirect_errors); |
| 1478 | |
| 1479 | /* |
| 1480 | * Enable DES enctypes, which are currently still required for AFS. |
| 1481 | * krb5_allow_weak_crypto is MIT Kerberos 1.8. krb5_enctype_enable is |
| 1482 | * Heimdal. |
| 1483 | */ |
| 1484 | #if defined(HAVE_KRB5_ENCTYPE_ENABLE) |
| 1485 | i = krb5_enctype_valid(context, ETYPE_DES_CBC_CRC); |
| 1486 | if (i) |
| 1487 | krb5_enctype_enable(context, ETYPE_DES_CBC_CRC); |
| 1488 | #elif defined(HAVE_KRB5_ALLOW_WEAK_CRYPTO) |
| 1489 | krb5_allow_weak_crypto(context, 1); |
| 1490 | #endif |
| 1491 | |
| 1492 | /* Initialize list of cells to which we have authenticated */ |
| 1493 | ll_init(&authedcells); |
| 1494 | |
| 1495 | /* Parse commandline arguments and make list of what to do. */ |
| 1496 | for (i = 1; i < argc; i++) { |
| 1497 | if (strcmp(argv[i], "-d") == 0) |
| 1498 | dflag++; |
| 1499 | else if (strcmp(argv[i], "-noauth") == 0) |
| 1500 | noauth++; |
| 1501 | else if (strcmp(argv[i], "-zsubs") == 0) |
| 1502 | zsubs++; |
| 1503 | else if (strcmp(argv[i], "-hosts") == 0) |
| 1504 | hosts++; |
| 1505 | else if (strcmp(argv[i], "-noprdb") == 0) |
| 1506 | noprdb++; |
| 1507 | else if (strcmp(argv[i], "-linked") == 0) |
| 1508 | linked++; |
| 1509 | else if (strcmp(argv[i], "-force") == 0) |
| 1510 | force++; |
| 1511 | #ifndef HAVE_NO_KRB5_524 |
| 1512 | else if (strcmp(argv[i], "-524") == 0) |
| 1513 | do524++; |
| 1514 | #endif |
| 1515 | else if (strcmp(argv[i], "-setpag") == 0) |
| 1516 | afssetpag++; |
| 1517 | else if (((strcmp(argv[i], "-cell") == 0) || |
| 1518 | (strcmp(argv[i], "-c") == 0)) && !pmode) |
| 1519 | if (++i < argc) { |
| 1520 | cmode++; |
| 1521 | strcpy(cell, argv[i]); |
| 1522 | } |
| 1523 | else |
| 1524 | usage(); |
| 1525 | else if ((strcmp(argv[i], "-keytab") == 0)) |
| 1526 | if (++i < argc) { |
| 1527 | keytab = argv[i]; |
| 1528 | } |
| 1529 | else |
| 1530 | usage(); |
| 1531 | else if ((strcmp(argv[i], "-principal") == 0)) |
| 1532 | if (++i < argc) { |
| 1533 | client = argv[i]; |
| 1534 | } |
| 1535 | else |
| 1536 | usage(); |
| 1537 | else if (((strcmp(argv[i], "-path") == 0) || |
| 1538 | (strcmp(argv[i], "-p") == 0)) && !cmode) |
| 1539 | if (++i < argc) { |
| 1540 | pmode++; |
| 1541 | strcpy(path, argv[i]); |
| 1542 | } |
| 1543 | else |
| 1544 | usage(); |
| 1545 | |
| 1546 | else if (argv[i][0] == '-') |
| 1547 | usage(); |
| 1548 | else if (!pmode && !cmode) { |
| 1549 | if (strchr(argv[i], DIR'/') || (strcmp(argv[i], ".") == 0) || |
| 1550 | (strcmp(argv[i], "..") == 0)) { |
| 1551 | pmode++; |
| 1552 | strcpy(path, argv[i]); |
| 1553 | } |
| 1554 | else { |
| 1555 | cmode++; |
| 1556 | strcpy(cell, argv[i]); |
| 1557 | } |
| 1558 | } |
| 1559 | else |
| 1560 | usage(); |
| 1561 | |
| 1562 | if (cmode) { |
| 1563 | if (((i + 1) < argc) && (strcmp(argv[i + 1], "-k") == 0)) { |
| 1564 | i+=2; |
| 1565 | if (i < argc) |
| 1566 | strcpy(realm, argv[i]); |
| 1567 | else |
| 1568 | usage(); |
| 1569 | } |
| 1570 | /* Add this cell to list of cells */ |
| 1571 | strcpy(cellinfo.cell, cell); |
| 1572 | strcpy(cellinfo.realm, realm); |
| 1573 | if ((cur_node = ll_add_node(&cells, ll_tail))) { |
| 1574 | char *new_cellinfo; |
| 1575 | if ((new_cellinfo = copy_cellinfo(&cellinfo))) |
| 1576 | ll_add_data(cur_node, new_cellinfo)(((cur_node)->data)=(char*)(new_cellinfo)); |
| 1577 | else { |
| 1578 | fprintf(stderr__stderrp, |
| 1579 | "%s: failure copying cellinfo.\n", progname); |
| 1580 | exit(AKLOG_MISC7); |
| 1581 | } |
| 1582 | } |
| 1583 | else { |
| 1584 | fprintf(stderr__stderrp, "%s: failure adding cell to cells list.\n", |
| 1585 | progname); |
| 1586 | exit(AKLOG_MISC7); |
| 1587 | } |
| 1588 | memset(&cellinfo, 0, sizeof(cellinfo)); |
| 1589 | cmode = FALSE0; |
| 1590 | memset(cell, 0, sizeof(cell)); |
| 1591 | memset(realm, 0, sizeof(realm)); |
| 1592 | } |
| 1593 | else if (pmode) { |
| 1594 | /* Add this path to list of paths */ |
| 1595 | if ((cur_node = ll_add_node(&paths, ll_tail))) { |
| 1596 | char *new_path; |
| 1597 | if ((new_path = strdup(path))) |
| 1598 | ll_add_data(cur_node, new_path)(((cur_node)->data)=(char*)(new_path)); |
| 1599 | else { |
| 1600 | fprintf(stderr__stderrp, "%s: failure copying path name.\n", |
| 1601 | progname); |
| 1602 | exit(AKLOG_MISC7); |
| 1603 | } |
| 1604 | } |
| 1605 | else { |
| 1606 | fprintf(stderr__stderrp, "%s: failure adding path to paths list.\n", |
| 1607 | progname); |
| 1608 | exit(AKLOG_MISC7); |
| 1609 | } |
| 1610 | pmode = FALSE0; |
| 1611 | memset(path, 0, sizeof(path)); |
| 1612 | } |
| 1613 | } |
| 1614 | |
| 1615 | /* If nothing was given, log to the local cell. */ |
| 1616 | if ((cells.nelements + paths.nelements) == 0) { |
| 1617 | struct passwd *pwd; |
| 1618 | |
| 1619 | status = auth_to_cell(context, NULL((void *)0), NULL((void *)0), &linkedcell); |
| 1620 | |
| 1621 | /* If this cell is linked to a DCE cell, and user requested -linked, |
| 1622 | * get tokens for both. This is very useful when the AFS cell is |
| 1623 | * linked to a DFS cell and this system does not also have DFS. |
| 1624 | */ |
| 1625 | |
| 1626 | if (!status && linked && linkedcell != NULL((void *)0)) { |
| 1627 | afs_dprintf("Linked cell: %s\n", linkedcell); |
| 1628 | status = auth_to_cell(context, linkedcell, NULL((void *)0), NULL((void *)0)); |
| 1629 | } |
| 1630 | if (linkedcell) { |
| 1631 | free(linkedcell); |
| 1632 | linkedcell = NULL((void *)0); |
| 1633 | } |
| 1634 | |
| 1635 | /* |
| 1636 | * Local hack - if the person has a file in their home |
| 1637 | * directory called ".xlog", read that for a list of |
| 1638 | * extra cells to authenticate to |
| 1639 | */ |
| 1640 | |
| 1641 | if ((pwd = getpwuid(getuid())) != NULL((void *)0)) { |
| 1642 | struct stat sbuf; |
| 1643 | FILE *f; |
| 1644 | char fcell[100], xlog_path[512]; |
| 1645 | |
| 1646 | strcpy(xlog_path, pwd->pw_dir); |
| 1647 | strcat(xlog_path, "/.xlog"); |
| 1648 | |
| 1649 | if ((stat(xlog_path, &sbuf) == 0) && |
| 1650 | ((f = fopen(xlog_path, "r")) != NULL((void *)0))) { |
| 1651 | |
| 1652 | afs_dprintf("Reading %s for cells to authenticate to.\n", |
| 1653 | xlog_path); |
| 1654 | |
| 1655 | while (fgets(fcell, 100, f) != NULL((void *)0)) { |
| 1656 | int auth_status; |
| 1657 | |
| 1658 | fcell[strlen(fcell) - 1] = '\0'; |
| 1659 | |
| 1660 | afs_dprintf("Found cell %s in %s.\n", fcell, xlog_path); |
| 1661 | |
| 1662 | auth_status = auth_to_cell(context, fcell, NULL((void *)0), NULL((void *)0)); |
| 1663 | if (status == AKLOG_SUCCESS0) |
| 1664 | status = auth_status; |
| 1665 | else |
| 1666 | status = AKLOG_SOMETHINGSWRONG2; |
| 1667 | } |
| 1668 | } |
| 1669 | } |
| 1670 | } |
| 1671 | else { |
| 1672 | /* Log to all cells in the cells list first */ |
| 1673 | for (cur_node = cells.first; cur_node; cur_node = cur_node->next) { |
| 1674 | memcpy((char *)&cellinfo, cur_node->data, sizeof(cellinfo)); |
| 1675 | if ((status = auth_to_cell(context, cellinfo.cell, cellinfo.realm, |
| 1676 | &linkedcell))) |
| 1677 | somethingswrong++; |
| 1678 | else { |
| 1679 | if (linked && linkedcell != NULL((void *)0)) { |
| 1680 | afs_dprintf("Linked cell: %s\n", linkedcell); |
| 1681 | if ((status = auth_to_cell(context, linkedcell, |
| 1682 | cellinfo.realm, NULL((void *)0)))) |
| 1683 | somethingswrong++; |
| 1684 | } |
| 1685 | if (linkedcell != NULL((void *)0)) { |
| 1686 | free(linkedcell); |
| 1687 | linkedcell = NULL((void *)0); |
| 1688 | } |
| 1689 | } |
| 1690 | } |
| 1691 | |
| 1692 | /* Then, log to all paths in the paths list */ |
| 1693 | for (cur_node = paths.first; cur_node; cur_node = cur_node->next) { |
| 1694 | if ((status = auth_to_path(context, cur_node->data))) |
| 1695 | somethingswrong++; |
| 1696 | } |
| 1697 | |
| 1698 | /* |
| 1699 | * If only one thing was logged to, we'll return the status |
| 1700 | * of the single call. Otherwise, we'll return a generic |
| 1701 | * something failed status. |
| 1702 | */ |
| 1703 | if (somethingswrong && ((cells.nelements + paths.nelements) > 1)) |
| 1704 | status = AKLOG_SOMETHINGSWRONG2; |
| 1705 | } |
| 1706 | |
| 1707 | /* If we are keeping track of zephyr subscriptions, print them. */ |
| 1708 | if (zsubs) |
| 1709 | for (cur_node = zsublist.first; cur_node; cur_node = cur_node->next) { |
| 1710 | printf("zsub: %s\n", cur_node->data); |
| 1711 | } |
| 1712 | |
| 1713 | /* If we are keeping track of host information, print it. */ |
| 1714 | if (hosts) |
| 1715 | for (cur_node = hostlist.first; cur_node; cur_node = cur_node->next) { |
| 1716 | printf("host: %s\n", cur_node->data); |
| 1717 | } |
| 1718 | |
| 1719 | exit(status); |
| 1720 | } |
| 1721 | |
| 1722 | static int |
| 1723 | isdir(char *path, unsigned char *val) |
| 1724 | { |
| 1725 | struct stat statbuf; |
| 1726 | |
| 1727 | if (lstat(path, &statbuf) < 0) |
| 1728 | return (-1); |
| 1729 | else { |
| 1730 | if ((statbuf.st_mode & S_IFMT0170000) == S_IFDIR0040000) |
| 1731 | *val = TRUE1; |
| 1732 | else |
| 1733 | *val = FALSE0; |
| 1734 | return (0); |
| 1735 | } |
| 1736 | } |
| 1737 | |
| 1738 | static krb5_error_code |
| 1739 | get_credv5_akimpersonate(krb5_context context, |
| 1740 | char* keytab, |
| 1741 | krb5_principal service_principal, |
| 1742 | krb5_principal client_principal, |
| 1743 | time_t starttime, |
| 1744 | time_t endtime, |
| 1745 | int *allowed_enctypes, |
| 1746 | int *paddress, |
| 1747 | krb5_creds** out_creds /* out */ ) |
| 1748 | { |
| 1749 | #if defined(USING_HEIMDAL1) || (defined(HAVE_ENCODE_KRB5_ENC_TKT) && defined(HAVE_ENCODE_KRB5_TICKET) && defined(HAVE_KRB5_C_ENCRYPT1)) |
| 1750 | krb5_error_code code; |
| 1751 | krb5_keytab kt = 0; |
| 1752 | krb5_kt_cursor cursor[1]; |
| 1753 | krb5_keytab_entry entry[1]; |
| 1754 | krb5_ccache cc = 0; |
| 1755 | krb5_creds *creds = 0; |
| 1756 | krb5_enctype enctype; |
| 1757 | krb5_kvno kvno; |
| 1758 | krb5_keyblock session_key[1]; |
| 1759 | #if USING_HEIMDAL1 |
| 1760 | Ticket ticket_reply[1]; |
| 1761 | EncTicketPart enc_tkt_reply[1]; |
| 1762 | krb5_address address[30]; |
| 1763 | krb5_addresses faddr[1]; |
| 1764 | int temp_vno[1]; |
| 1765 | time_t temp_time[2]; |
| 1766 | #else |
| 1767 | krb5_ticket ticket_reply[1]; |
| 1768 | krb5_enc_tkt_part enc_tkt_reply[1]; |
| 1769 | krb5_address address[30], *faddr[30]; |
| 1770 | krb5_data * temp; |
| 1771 | #endif |
| 1772 | int i; |
| 1773 | static int any_enctype[] = {0}; |
| 1774 | *out_creds = 0; |
| 1775 | if (!(creds = malloc(sizeof *creds))) { |
| 1776 | code = ENOMEM12; |
| 1777 | goto cleanup; |
| 1778 | } |
| 1779 | if (!allowed_enctypes) |
| 1780 | allowed_enctypes = any_enctype; |
| 1781 | |
| 1782 | cc = 0; |
| 1783 | enctype = 0; /* AKIMPERSONATE_IGNORE_ENCTYPE */ |
Value stored to 'enctype' is never read | |
| 1784 | kvno = 0; /* AKIMPERSONATE_IGNORE_VNO */ |
| 1785 | memset((char*)creds, 0, sizeof *creds); |
| 1786 | memset((char*)entry, 0, sizeof *entry); |
| 1787 | memset((char*)session_key, 0, sizeof *session_key); |
| 1788 | memset((char*)ticket_reply, 0, sizeof *ticket_reply); |
| 1789 | memset((char*)enc_tkt_reply, 0, sizeof *enc_tkt_reply); |
| 1790 | code = krb5_kt_resolve(context, keytab, &kt); |
| 1791 | if (code) { |
| 1792 | if (keytab) |
| 1793 | afs_com_err(progname, code, "while resolving keytab %s", keytab); |
| 1794 | else |
| 1795 | afs_com_err(progname, code, "while resolving default keytab"); |
| 1796 | goto cleanup; |
| 1797 | } |
| 1798 | |
| 1799 | if (service_principal) { |
| 1800 | for (i = 0; (enctype = allowed_enctypes[i]) || !i; ++i) { |
| 1801 | code = krb5_kt_get_entry(context, |
| 1802 | kt, |
| 1803 | service_principal, |
| 1804 | kvno, |
| 1805 | enctype, |
| 1806 | entry); |
| 1807 | if (!code) { |
| 1808 | if (allowed_enctypes[i]) |
| 1809 | deref_keyblock_enctype(session_key)((session_key)->keytype) = allowed_enctypes[i]; |
| 1810 | break; |
| 1811 | } |
| 1812 | } |
| 1813 | if (code) { |
| 1814 | afs_com_err(progname, code,"while scanning keytab entries"); |
| 1815 | goto cleanup; |
| 1816 | } |
| 1817 | } else { |
| 1818 | krb5_keytab_entry new[1]; |
| 1819 | int best = -1; |
| 1820 | memset(new, 0, sizeof *new); |
| 1821 | if ((code == krb5_kt_start_seq_get(context, kt, cursor))) { |
| 1822 | afs_com_err(progname, code, "while starting keytab scan"); |
| 1823 | goto cleanup; |
| 1824 | } |
| 1825 | while (!(code = krb5_kt_next_entry(context, kt, new, cursor))) { |
| 1826 | for (i = 0; |
| 1827 | allowed_enctypes[i] && allowed_enctypes[i] |
| 1828 | != deref_entry_enctype(new)((&new->keyblock)->keytype); ++i) |
| 1829 | ; |
| 1830 | if ((!i || allowed_enctypes[i]) && |
| 1831 | (best < 0 || best > i)) { |
| 1832 | krb5_free_keytab_entry_contentskrb5_kt_free_entry(context, entry); |
| 1833 | *entry = *new; |
| 1834 | memset(new, 0, sizeof *new); |
| 1835 | } else krb5_free_keytab_entry_contentskrb5_kt_free_entry(context, new); |
| 1836 | } |
| 1837 | if ((i = krb5_kt_end_seq_get(context, kt, cursor))) { |
| 1838 | afs_com_err(progname, i, "while ending keytab scan"); |
| 1839 | code = i; |
| 1840 | goto cleanup; |
| 1841 | } |
| 1842 | if (best < 0) { |
| 1843 | afs_com_err(progname, code, "while scanning keytab"); |
| 1844 | goto cleanup; |
| 1845 | } |
| 1846 | deref_keyblock_enctype(session_key)((session_key)->keytype) = deref_entry_enctype(entry)((&entry->keyblock)->keytype); |
| 1847 | } |
| 1848 | |
| 1849 | /* Make Ticket */ |
| 1850 | |
| 1851 | #if USING_HEIMDAL1 |
| 1852 | if ((code = krb5_generate_random_keyblock(context, |
| 1853 | deref_keyblock_enctype(session_key)((session_key)->keytype), session_key))) { |
| 1854 | afs_com_err(progname, code, "while making session key"); |
| 1855 | goto cleanup; |
| 1856 | } |
| 1857 | enc_tkt_reply->flags.initial = 1; |
| 1858 | enc_tkt_reply->transited.tr_type = DOMAIN_X500_COMPRESS; |
| 1859 | enc_tkt_reply->cname = client_principal->name; |
| 1860 | enc_tkt_reply->crealm = client_principal->realm; |
| 1861 | enc_tkt_reply->key = *session_key; |
| 1862 | { |
| 1863 | static krb5_data empty_string; |
| 1864 | enc_tkt_reply->transited.contents = empty_string; |
| 1865 | } |
| 1866 | enc_tkt_reply->authtime = starttime; |
| 1867 | enc_tkt_reply->starttime = temp_time; |
| 1868 | *enc_tkt_reply->starttime = starttime; |
| 1869 | #if 0 |
| 1870 | enc_tkt_reply->renew_till = temp_time + 1; |
| 1871 | *enc_tkt_reply->renew_till = endtime; |
| 1872 | #endif |
| 1873 | enc_tkt_reply->endtime = endtime; |
| 1874 | #else |
| 1875 | if ((code = krb5_c_make_random_key(context, |
| 1876 | deref_keyblock_enctype(session_key)((session_key)->keytype), session_key))) { |
| 1877 | afs_com_err(progname, code, "while making session key"); |
| 1878 | goto cleanup; |
| 1879 | } |
| 1880 | enc_tkt_reply->magic = KV5M_ENC_TKT_PART; |
| 1881 | #define DATACAST (unsigned char *) |
| 1882 | enc_tkt_reply->flags |= TKT_FLG_INITIAL; |
| 1883 | enc_tkt_reply->transited.tr_type = KRB5_DOMAIN_X500_COMPRESS; |
| 1884 | enc_tkt_reply->session = session_key; |
| 1885 | enc_tkt_reply->client = client_principal; |
| 1886 | { |
| 1887 | static krb5_data empty_string; |
| 1888 | enc_tkt_reply->transited.tr_contents = empty_string; |
| 1889 | } |
| 1890 | enc_tkt_reply->times.authtime = starttime; |
| 1891 | enc_tkt_reply->times.starttime = starttime; /* krb524init needs this */ |
| 1892 | enc_tkt_reply->times.endtime = endtime; |
| 1893 | #endif /* USING_HEIMDAL */ |
| 1894 | /* NB: We will discard address for now--ignoring caddr field |
| 1895 | in any case. MIT branch does what it always did. */ |
| 1896 | |
| 1897 | if (paddress && *paddress) { |
| 1898 | deref_enc_tkt_addrs(enc_tkt_reply)enc_tkt_reply->caddr = faddr; |
| 1899 | #if USING_HEIMDAL1 |
| 1900 | faddr->len = 0; |
| 1901 | faddr->val = address; |
| 1902 | #endif |
| 1903 | for (i = 0; paddress[i]; ++i) { |
| 1904 | #if USING_HEIMDAL1 |
| 1905 | address[i].addr_type = KRB5_ADDRESS_INET; |
| 1906 | address[i].address.data = (void*)(paddress+i); |
| 1907 | address[i].address.length = sizeof(paddress[i]); |
| 1908 | #else |
| 1909 | #if !USING_SSL |
| 1910 | address[i].magic = KV5M_ADDRESS; |
| 1911 | address[i].addrtype = ADDRTYPE_INET; |
| 1912 | #else |
| 1913 | address[i].addrtype = AF_INET2; |
| 1914 | #endif |
| 1915 | address[i].contents = (void*)(paddress+i); |
| 1916 | address[i].length = sizeof(int); |
| 1917 | faddr[i] = address+i; |
| 1918 | #endif |
| 1919 | } |
| 1920 | #if USING_HEIMDAL1 |
| 1921 | faddr->len = i; |
| 1922 | #else |
| 1923 | faddr[i] = 0; |
| 1924 | #endif |
| 1925 | } |
| 1926 | |
| 1927 | #if USING_HEIMDAL1 |
| 1928 | ticket_reply->sname = service_principal->name; |
| 1929 | ticket_reply->realm = service_principal->realm; |
| 1930 | |
| 1931 | { /* crypto block */ |
| 1932 | krb5_crypto crypto = 0; |
| 1933 | unsigned char *buf = 0; |
| 1934 | size_t buf_size, buf_len; |
| 1935 | char *what; |
| 1936 | |
| 1937 | ASN1_MALLOC_ENCODE(EncTicketPart, buf, buf_size,do { (buf_size) = length_EncTicketPart((enc_tkt_reply)); (buf ) = malloc((buf_size)); if((buf) == ((void *)0)) { (code) = 12 ; } else { (code) = encode_EncTicketPart(((unsigned char*)(buf )) + (buf_size) - 1, (buf_size), (enc_tkt_reply), (&buf_len )); if((code) != 0) { free((buf)); (buf) = ((void *)0); } } } while (0) |
| 1938 | enc_tkt_reply, &buf_len, code)do { (buf_size) = length_EncTicketPart((enc_tkt_reply)); (buf ) = malloc((buf_size)); if((buf) == ((void *)0)) { (code) = 12 ; } else { (code) = encode_EncTicketPart(((unsigned char*)(buf )) + (buf_size) - 1, (buf_size), (enc_tkt_reply), (&buf_len )); if((code) != 0) { free((buf)); (buf) = ((void *)0); } } } while (0); |
| 1939 | if(code) { |
| 1940 | afs_com_err(progname, code, "while encoding ticket"); |
| 1941 | goto cleanup; |
| 1942 | } |
| 1943 | |
| 1944 | if(buf_len != buf_size) { |
| 1945 | afs_com_err(progname, code, |
| 1946 | "%u != %u while encoding ticket (internal ASN.1 encoder error", |
| 1947 | (unsigned int)buf_len, (unsigned int)buf_size); |
| 1948 | goto cleanup; |
| 1949 | } |
| 1950 | what = "krb5_crypto_init"; |
| 1951 | code = krb5_crypto_init(context, |
| 1952 | &deref_entry_keyblock(entry)entry->keyblock, |
| 1953 | deref_entry_enctype(entry)((&entry->keyblock)->keytype), |
| 1954 | &crypto); |
| 1955 | if(!code) { |
| 1956 | what = "krb5_encrypt"; |
| 1957 | code = krb5_encrypt_EncryptedData(context, crypto, KRB5_KU_TICKET, |
| 1958 | buf, buf_len, entry->vno, &(ticket_reply->enc_part)); |
| 1959 | } |
| 1960 | if (buf) free(buf); |
| 1961 | if (crypto) krb5_crypto_destroy(context, crypto); |
| 1962 | if(code) { |
| 1963 | afs_com_err(progname, code, "while %s", what); |
| 1964 | goto cleanup; |
| 1965 | } |
| 1966 | } /* crypto block */ |
| 1967 | ticket_reply->enc_part.etype = deref_entry_enctype(entry)((&entry->keyblock)->keytype); |
| 1968 | ticket_reply->enc_part.kvno = temp_vno; |
| 1969 | *ticket_reply->enc_part.kvno = entry->vno; |
| 1970 | ticket_reply->tkt_vno = 5; |
| 1971 | #else |
| 1972 | ticket_reply->server = service_principal; |
| 1973 | ticket_reply->enc_part2 = enc_tkt_reply; |
| 1974 | if ((code = krb5_encrypt_tkt_part(context, &deref_entry_keyblock(entry)entry->keyblock, ticket_reply))) { |
| 1975 | afs_com_err(progname, code, "while making ticket"); |
| 1976 | goto cleanup; |
| 1977 | } |
| 1978 | ticket_reply->enc_part.kvno = entry->vno; |
| 1979 | #endif |
| 1980 | |
| 1981 | /* Construct Creds */ |
| 1982 | |
| 1983 | if ((code = krb5_copy_principal(context, service_principal, |
| 1984 | &creds->server))) { |
| 1985 | afs_com_err(progname, code, "while copying service principal"); |
| 1986 | goto cleanup; |
| 1987 | } |
| 1988 | if ((code = krb5_copy_principal(context, client_principal, |
| 1989 | &creds->client))) { |
| 1990 | afs_com_err(progname, code, "while copying client principal"); |
| 1991 | goto cleanup; |
| 1992 | } |
| 1993 | if ((code = krb5_copy_keyblock_contents(context, session_key, |
| 1994 | &deref_session_key(creds)creds->session))) { |
| 1995 | afs_com_err(progname, code, "while copying session key"); |
| 1996 | goto cleanup; |
| 1997 | } |
| 1998 | |
| 1999 | #if USING_HEIMDAL1 |
| 2000 | creds->times.authtime = enc_tkt_reply->authtime; |
| 2001 | creds->times.starttime = *(enc_tkt_reply->starttime); |
| 2002 | creds->times.endtime = enc_tkt_reply->endtime; |
| 2003 | creds->times.renew_till = 0; /* *(enc_tkt_reply->renew_till) */ |
| 2004 | creds->flags.b = enc_tkt_reply->flags; |
| 2005 | #else |
| 2006 | creds->times = enc_tkt_reply->times; |
| 2007 | creds->ticket_flags = enc_tkt_reply->flags; |
| 2008 | #endif |
| 2009 | if (!deref_enc_tkt_addrs(enc_tkt_reply)enc_tkt_reply->caddr) |
| 2010 | ; |
| 2011 | else if ((code = krb5_copy_addresses(context, |
| 2012 | deref_enc_tkt_addrs(enc_tkt_reply)enc_tkt_reply->caddr, &creds->addresses))) { |
| 2013 | afs_com_err(progname, code, "while copying addresses"); |
| 2014 | goto cleanup; |
| 2015 | } |
| 2016 | |
| 2017 | #if USING_HEIMDAL1 |
| 2018 | { |
| 2019 | size_t creds_tkt_len; |
| 2020 | ASN1_MALLOC_ENCODE(Ticket, creds->ticket.data, creds->ticket.length,do { (creds->ticket.length) = length_Ticket((ticket_reply) ); (creds->ticket.data) = malloc((creds->ticket.length) ); if((creds->ticket.data) == ((void *)0)) { (code) = 12; } else { (code) = encode_Ticket(((unsigned char*)(creds->ticket .data)) + (creds->ticket.length) - 1, (creds->ticket.length ), (ticket_reply), (&creds_tkt_len)); if((code) != 0) { free ((creds->ticket.data)); (creds->ticket.data) = ((void * )0); } } } while (0) |
| 2021 | ticket_reply, &creds_tkt_len, code)do { (creds->ticket.length) = length_Ticket((ticket_reply) ); (creds->ticket.data) = malloc((creds->ticket.length) ); if((creds->ticket.data) == ((void *)0)) { (code) = 12; } else { (code) = encode_Ticket(((unsigned char*)(creds->ticket .data)) + (creds->ticket.length) - 1, (creds->ticket.length ), (ticket_reply), (&creds_tkt_len)); if((code) != 0) { free ((creds->ticket.data)); (creds->ticket.data) = ((void * )0); } } } while (0); |
| 2022 | if(code) { |
| 2023 | afs_com_err(progname, code, "while encoding ticket"); |
| 2024 | goto cleanup; |
| 2025 | } |
| 2026 | } |
| 2027 | #else |
| 2028 | if ((code = encode_krb5_ticket(ticket_reply, &temp))) { |
| 2029 | afs_com_err(progname, code, "while encoding ticket"); |
| 2030 | goto cleanup; |
| 2031 | } |
| 2032 | creds->ticket = *temp; |
| 2033 | free(temp); |
| 2034 | #endif |
| 2035 | /* return creds */ |
| 2036 | *out_creds = creds; |
| 2037 | creds = 0; |
| 2038 | cleanup: |
| 2039 | if (deref_enc_data(&ticket_reply->enc_part)((&ticket_reply->enc_part)->cipher.data)) |
| 2040 | free(deref_enc_data(&ticket_reply->enc_part)((&ticket_reply->enc_part)->cipher.data)); |
| 2041 | krb5_free_keytab_entry_contentskrb5_kt_free_entry(context, entry); |
| 2042 | if (client_principal) |
| 2043 | krb5_free_principal(context, client_principal); |
| 2044 | if (service_principal) |
| 2045 | krb5_free_principal(context, service_principal); |
| 2046 | if (cc) |
| 2047 | krb5_cc_close(context, cc); |
| 2048 | if (kt) |
| 2049 | krb5_kt_close(context, kt); |
| 2050 | if (creds) krb5_free_creds(context, creds); |
| 2051 | krb5_free_keyblock_contents(context, session_key); |
| 2052 | return code; |
| 2053 | #else |
| 2054 | return -1; |
| 2055 | #endif |
| 2056 | } |
| 2057 | |
| 2058 | |
| 2059 | static krb5_error_code |
| 2060 | get_credv5(krb5_context context, char *name, char *inst, char *realm, |
| 2061 | krb5_creds **creds) |
| 2062 | { |
| 2063 | krb5_creds increds; |
| 2064 | krb5_error_code r; |
| 2065 | static krb5_principal client_principal = 0; |
| 2066 | |
| 2067 | afs_dprintf("Getting tickets: %s%s%s@%s\n", name, |
| 2068 | (inst && inst[0]) ? "/" : "", inst ? inst : "", realm); |
| 2069 | |
| 2070 | memset(&increds, 0, sizeof(increds)); |
| 2071 | /* ANL - instance may be ptr to a null string. Pass null then */ |
| 2072 | if ((r = krb5_build_principal(context, &increds.server, |
| 2073 | strlen(realm), realm, |
| 2074 | name, |
| 2075 | (inst && strlen(inst)) ? inst : (void *) NULL((void *)0), |
| 2076 | (void *) NULL((void *)0)))) { |
| 2077 | return r; |
| 2078 | } |
| 2079 | |
| 2080 | |
| 2081 | if (!_krb425_ccache) { |
| 2082 | r = krb5_cc_default(context, &_krb425_ccache); |
| 2083 | if (r) |
| 2084 | return r; |
| 2085 | } |
| 2086 | if (!client_principal) { |
| 2087 | if (client) { |
| 2088 | r = krb5_parse_name(context, client, &client_principal); |
| 2089 | } else { |
| 2090 | r = krb5_cc_get_principal(context, _krb425_ccache, &client_principal); |
| 2091 | } |
| 2092 | if (r) |
| 2093 | return r; |
| 2094 | } |
| 2095 | |
| 2096 | increds.client = client_principal; |
| 2097 | increds.times.endtime = 0; |
| 2098 | /* Ask for DES since that is what V4 understands */ |
| 2099 | get_creds_enctype((&increds))(&increds)->session.keytype = ENCTYPE_DES_CBC_CRC; |
| 2100 | |
| 2101 | if (keytab) { |
| 2102 | int allowed_enctypes[] = { |
| 2103 | ENCTYPE_DES_CBC_CRC, 0 |
| 2104 | }; |
| 2105 | |
| 2106 | r = get_credv5_akimpersonate(context, |
| 2107 | keytab, |
| 2108 | increds.server, |
| 2109 | increds.client, |
| 2110 | 300, ((~0U)>>1), |
| 2111 | allowed_enctypes, |
| 2112 | 0 /* paddress */, |
| 2113 | creds /* out */); |
| 2114 | } else { |
| 2115 | r = krb5_get_credentials(context, 0, _krb425_ccache, &increds, creds); |
| 2116 | } |
| 2117 | return r; |
| 2118 | } |
| 2119 | |
| 2120 | |
| 2121 | static int |
| 2122 | get_user_realm(krb5_context context, char **realm) |
| 2123 | { |
| 2124 | static krb5_principal client_principal = 0; |
| 2125 | krb5_error_code r = 0; |
| 2126 | |
| 2127 | *realm = NULL((void *)0); |
| 2128 | |
| 2129 | if (!_krb425_ccache) { |
| 2130 | r = krb5_cc_default(context, &_krb425_ccache); |
| 2131 | if (r) |
| 2132 | return r; |
| 2133 | } |
| 2134 | if (!client_principal) { |
| 2135 | if (client) { |
| 2136 | r = krb5_parse_name(context, client, &client_principal); |
| 2137 | } else { |
| 2138 | r = krb5_cc_get_principal(context, _krb425_ccache, &client_principal); |
| 2139 | } |
| 2140 | if (r) |
| 2141 | return r; |
| 2142 | } |
| 2143 | |
| 2144 | *realm = extract_realm(context, client_principal); |
| 2145 | if (*realm == NULL((void *)0)) |
| 2146 | return ENOMEM12; |
| 2147 | |
| 2148 | return(r); |
| 2149 | } |