kuser/klist.c

   1 /*
   2  * Copyright (c) 1997-2008 Kungliga Tekniska Högskolan
   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 "kuser_locl.h"
  35 #include "rtbl.h"
  36 #include "parse_units.h"
  37
  38 RCSID("$Id$");
  39
  40 static char*
  41 printable_time(time_t t)
  42 {
  43     static char s[128];
  44     strlcpy(s, ctime(&t)+ 4, sizeof(s));
  45     s[15] = 0;
  46     return s;
  47 }
  48
  49 static char*
  50 printable_time_long(time_t t)
  51 {
  52     static char s[128];
  53     strlcpy(s, ctime(&t)+ 4, sizeof(s));
  54     s[20] = 0;
  55     return s;
  56 }
  57
  58 #define COL_ISSUED              NP_("  Issued","")
  59 #define COL_EXPIRES             NP_("  Expires", "")
  60 #define COL_FLAGS               NP_("Flags", "")
  61 #define COL_NAME                NP_("  Name", "")
  62 #define COL_PRINCIPAL           NP_("  Principal", "")
  63 #define COL_PRINCIPAL_KVNO      NP_("  Principal (kvno)", "")
  64 #define COL_CACHENAME           NP_("  Cache name", "")
  65
  66 static void
  67 print_cred(krb5_context context, krb5_creds *cred, rtbl_t ct, int do_flags)
  68 {
  69     char *str;
  70     krb5_error_code ret;
  71     krb5_timestamp sec;
  72
  73     krb5_timeofday (context, &sec);
  74
  75
  76     if(cred->times.starttime)
  77         rtbl_add_column_entry(ct, COL_ISSUED,
  78                               printable_time(cred->times.starttime));
  79     else
  80         rtbl_add_column_entry(ct, COL_ISSUED,
  81                               printable_time(cred->times.authtime));
  82
  83     if(cred->times.endtime > sec)
  84         rtbl_add_column_entry(ct, COL_EXPIRES,
  85                               printable_time(cred->times.endtime));
  86     else
  87         rtbl_add_column_entry(ct, COL_EXPIRES, N_(">>>Expired<<<", ""));
  88     ret = krb5_unparse_name (context, cred->server, &str);
  89     if (ret)
  90         krb5_err(context, 1, ret, "krb5_unparse_name");
  91     rtbl_add_column_entry(ct, COL_PRINCIPAL, str);
  92     if(do_flags) {
  93         char s[16], *sp = s;
  94         if(cred->flags.b.forwardable)
  95             *sp++ = 'F';
  96         if(cred->flags.b.forwarded)
  97             *sp++ = 'f';
  98         if(cred->flags.b.proxiable)
  99             *sp++ = 'P';
 100         if(cred->flags.b.proxy)
 101             *sp++ = 'p';
 102         if(cred->flags.b.may_postdate)
 103             *sp++ = 'D';
 104         if(cred->flags.b.postdated)
 105             *sp++ = 'd';
 106         if(cred->flags.b.renewable)
 107             *sp++ = 'R';
 108         if(cred->flags.b.initial)
 109             *sp++ = 'I';
 110         if(cred->flags.b.invalid)
 111             *sp++ = 'i';
 112         if(cred->flags.b.pre_authent)
 113             *sp++ = 'A';
 114         if(cred->flags.b.hw_authent)
 115             *sp++ = 'H';
 116         *sp = '\0';
 117         rtbl_add_column_entry(ct, COL_FLAGS, s);
 118     }
 119     free(str);
 120 }
 121
 122 static void
 123 print_cred_verbose(krb5_context context, krb5_creds *cred)
 124 {
 125     int j;
 126     char *str;
 127     krb5_error_code ret;
 128     krb5_timestamp sec;
 129
 130     krb5_timeofday (context, &sec);
 131
 132     ret = krb5_unparse_name(context, cred->server, &str);
 133     if(ret)
 134         exit(1);
 135     printf(N_("Server: %s\n", ""), str);
 136     free (str);
 137
 138     ret = krb5_unparse_name(context, cred->client, &str);
 139     if(ret)
 140         exit(1);
 141     printf(N_("Client: %s\n", ""), str);
 142     free (str);
 143
 144     {
 145         Ticket t;
 146         size_t len;
 147         char *s;
 148
 149         decode_Ticket(cred->ticket.data, cred->ticket.length, &t, &len);
 150         ret = krb5_enctype_to_string(context, t.enc_part.etype, &s);
 151         printf(N_("Ticket etype: ", ""));
 152         if (ret == 0) {
 153             printf("%s", s);
 154             free(s);
 155         } else {
 156             printf(N_("unknown-enctype(%d)", ""), t.enc_part.etype);
 157         }
 158         if(t.enc_part.kvno)
 159             printf(N_(", kvno %d", ""), *t.enc_part.kvno);
 160         printf("\n");
 161         if(cred->session.keytype != t.enc_part.etype) {
 162             ret = krb5_enctype_to_string(context, cred->session.keytype, &str);
 163             if(ret)
 164                 krb5_warn(context, ret, "session keytype");
 165             else {
 166                 printf(N_("Session key: %s\n", "enctype"), str);
 167                 free(str);
 168             }
 169         }
 170         free_Ticket(&t);
 171         printf(N_("Ticket length: %lu\n", ""),
 172                (unsigned long)cred->ticket.length);
 173     }
 174     printf(N_("Auth time:  %s\n", ""),
 175            printable_time_long(cred->times.authtime));
 176     if(cred->times.authtime != cred->times.starttime)
 177         printf(N_("Start time: %s\n", ""),
 178                printable_time_long(cred->times.starttime));
 179     printf(N_("End time:   %s", ""),
 180            printable_time_long(cred->times.endtime));
 181     if(sec > cred->times.endtime)
 182         printf(N_(" (expired)", ""));
 183     printf("\n");
 184     if(cred->flags.b.renewable)
 185         printf(N_("Renew till: %s\n", ""),
 186                printable_time_long(cred->times.renew_till));
 187     {
 188         char flags[1024];
 189         unparse_flags(TicketFlags2int(cred->flags.b),
 190                       asn1_TicketFlags_units(),
 191                       flags, sizeof(flags));
 192         printf(N_("Ticket flags: %s\n", ""), flags);
 193     }
 194     printf(N_("Addresses: ", ""));
 195     if (cred->addresses.len != 0) {
 196         for(j = 0; j < cred->addresses.len; j++){
 197             char buf[128];
 198             size_t len;
 199             if(j) printf(", ");
 200             ret = krb5_print_address(&cred->addresses.val[j],
 201                                      buf, sizeof(buf), &len);
 202
 203             if(ret == 0)
 204                 printf("%s", buf);
 205         }
 206     } else {
 207         printf(N_("addressless", ""));
 208     }
 209     printf("\n\n");
 210 }
 211
 212 /*
 213  * Print all tickets in `ccache' on stdout, verbosily iff do_verbose.
 214  */
 215
 216 static void
 217 print_tickets (krb5_context context,
 218                krb5_ccache ccache,
 219                krb5_principal principal,
 220                int do_verbose,
 221                int do_flags,
 222                int do_hidden)
 223 {
 224     krb5_error_code ret;
 225     char *str, *name;
 226     krb5_cc_cursor cursor;
 227     krb5_creds creds;
 228     int32_t sec, usec;
 229
 230     rtbl_t ct = NULL;
 231
 232     ret = krb5_unparse_name (context, principal, &str);
 233     if (ret)
 234         krb5_err (context, 1, ret, "krb5_unparse_name");
 235
 236     printf ("%17s: %s:%s\n",
 237             N_("Credentials cache", ""),
 238             krb5_cc_get_type(context, ccache),
 239             krb5_cc_get_name(context, ccache));
 240     printf ("%17s: %s\n", N_("Principal", ""), str);
 241
 242     ret = krb5_cc_get_friendly_name(context, ccache, &name);
 243     if (ret == 0) {
 244         if (strcmp(name, str) != 0)
 245             printf ("%17s: %s\n", N_("Friendly name", ""), name);
 246         free(name);
 247     }
 248     free (str);
 249
 250     if(do_verbose)
 251         printf ("%17s: %d\n", N_("Cache version", ""),
 252                 krb5_cc_get_version(context, ccache));
 253
 254     krb5_get_kdc_sec_offset(context, &sec, &usec);
 255
 256     if (do_verbose && sec != 0) {
 257         char buf[BUFSIZ];
 258         int val;
 259         int sig;
 260
 261         val = sec;
 262         sig = 1;
 263         if (val < 0) {
 264             sig = -1;
 265             val = -val;
 266         }
 267
 268         unparse_time (val, buf, sizeof(buf));
 269
 270         printf ("%17s: %s%s\n", N_("KDC time offset", ""),
 271                 sig == -1 ? "-" : "", buf);
 272     }
 273
 274     printf("\n");
 275
 276     ret = krb5_cc_start_seq_get (context, ccache, &cursor);
 277     if (ret)
 278         krb5_err(context, 1, ret, "krb5_cc_start_seq_get");
 279
 280     if(!do_verbose) {
 281         ct = rtbl_create();
 282         rtbl_add_column(ct, COL_ISSUED, 0);
 283         rtbl_add_column(ct, COL_EXPIRES, 0);
 284         if(do_flags)
 285             rtbl_add_column(ct, COL_FLAGS, 0);
 286         rtbl_add_column(ct, COL_PRINCIPAL, 0);
 287         rtbl_set_separator(ct, "  ");
 288     }
 289     while ((ret = krb5_cc_next_cred (context,
 290                                      ccache,
 291                                      &cursor,
 292                                      &creds)) == 0) {
 293         if (!do_hidden && krb5_is_config_principal(context, creds.server)) {
 294             ;
 295         }else if(do_verbose){
 296             print_cred_verbose(context, &creds);
 297         }else{
 298             print_cred(context, &creds, ct, do_flags);
 299         }
 300         krb5_free_cred_contents (context, &creds);
 301     }
 302     if(ret != KRB5_CC_END)
 303         krb5_err(context, 1, ret, "krb5_cc_get_next");
 304     ret = krb5_cc_end_seq_get (context, ccache, &cursor);
 305     if (ret)
 306         krb5_err (context, 1, ret, "krb5_cc_end_seq_get");
 307     if(!do_verbose) {
 308         rtbl_format(ct, stdout);
 309         rtbl_destroy(ct);
 310     }
 311 }
 312
 313 /*
 314  * Check if there's a tgt for the realm of `principal' and ccache and
 315  * if so return 0, else 1
 316  */
 317
 318 static int
 319 check_for_tgt (krb5_context context,
 320                krb5_ccache ccache,
 321                krb5_principal principal,
 322                time_t *expiration)
 323 {
 324     krb5_error_code ret;
 325     krb5_creds pattern;
 326     krb5_creds creds;
 327     krb5_const_realm client_realm;
 328     int expired;
 329
 330     krb5_cc_clear_mcred(&pattern);
 331
 332     client_realm = krb5_principal_get_realm(context, principal);
 333
 334     ret = krb5_make_principal (context, &pattern.server,
 335                                client_realm, KRB5_TGS_NAME, client_realm, NULL);
 336     if (ret)
 337         krb5_err (context, 1, ret, "krb5_make_principal");
 338     pattern.client = principal;
 339
 340     ret = krb5_cc_retrieve_cred (context, ccache, 0, &pattern, &creds);
 341     krb5_free_principal (context, pattern.server);
 342     if (ret) {
 343         if (ret == KRB5_CC_END)
 344             return 1;
 345         krb5_err (context, 1, ret, "krb5_cc_retrieve_cred");
 346     }
 347
 348     expired = time(NULL) > creds.times.endtime;
 349
 350     if (expiration)
 351         *expiration = creds.times.endtime;
 352
 353     krb5_free_cred_contents (context, &creds);
 354
 355     return expired;
 356 }
 357
 358 /*
 359  * Print a list of all AFS tokens
 360  */
 361
 362 #ifndef NO_AFS
 363
 364 static void
 365 display_tokens(int do_verbose)
 366 {
 367     uint32_t i;
 368     unsigned char t[4096];
 369     struct ViceIoctl parms;
 370
 371     parms.in = (void *)&i;
 372     parms.in_size = sizeof(i);
 373     parms.out = (void *)t;
 374     parms.out_size = sizeof(t);
 375
 376     for (i = 0;; i++) {
 377         int32_t size_secret_tok, size_public_tok;
 378         unsigned char *cell;
 379         struct ClearToken ct;
 380         unsigned char *r = t;
 381         struct timeval tv;
 382         char buf1[20], buf2[20];
 383
 384         if(k_pioctl(NULL, VIOCGETTOK, &parms, 0) < 0) {
 385             if(errno == EDOM)
 386                 break;
 387             continue;
 388         }
 389         if(parms.out_size > sizeof(t))
 390             continue;
 391         if(parms.out_size < sizeof(size_secret_tok))
 392             continue;
 393         t[min(parms.out_size,sizeof(t)-1)] = 0;
 394         memcpy(&size_secret_tok, r, sizeof(size_secret_tok));
 395         /* dont bother about the secret token */
 396         r += size_secret_tok + sizeof(size_secret_tok);
 397         if (parms.out_size < (r - t) + sizeof(size_public_tok))
 398             continue;
 399         memcpy(&size_public_tok, r, sizeof(size_public_tok));
 400         r += sizeof(size_public_tok);
 401         if (parms.out_size < (r - t) + size_public_tok + sizeof(int32_t))
 402             continue;
 403         memcpy(&ct, r, size_public_tok);
 404         r += size_public_tok;
 405         /* there is a int32_t with length of cellname, but we dont read it */
 406         r += sizeof(int32_t);
 407         cell = r;
 408
 409         gettimeofday (&tv, NULL);
 410         strlcpy (buf1, printable_time(ct.BeginTimestamp),
 411                  sizeof(buf1));
 412         if (do_verbose || tv.tv_sec < ct.EndTimestamp)
 413             strlcpy (buf2, printable_time(ct.EndTimestamp),
 414                      sizeof(buf2));
 415         else
 416             strlcpy (buf2, N_(">>> Expired <<<", ""), sizeof(buf2));
 417
 418         printf("%s  %s  ", buf1, buf2);
 419
 420         if ((ct.EndTimestamp - ct.BeginTimestamp) & 1)
 421             printf(N_("User's (AFS ID %d) tokens for %s", ""), ct.ViceId, cell);
 422         else
 423             printf(N_("Tokens for %s", ""), cell);
 424         if (do_verbose)
 425             printf(" (%d)", ct.AuthHandle);
 426         putchar('\n');
 427     }
 428 }
 429 #endif
 430
 431 /*
 432  * display the ccache in `cred_cache'
 433  */
 434
 435 static int
 436 display_v5_ccache (const char *cred_cache, int do_test, int do_verbose,
 437                    int do_flags, int do_hidden)
 438 {
 439     krb5_error_code ret;
 440     krb5_context context;
 441     krb5_ccache ccache;
 442     krb5_principal principal;
 443     int exit_status = 0;
 444
 445     ret = krb5_init_context (&context);
 446     if (ret)
 447         errx (1, "krb5_init_context failed: %d", ret);
 448
 449     if(cred_cache) {
 450         ret = krb5_cc_resolve(context, cred_cache, &ccache);
 451         if (ret)
 452             krb5_err (context, 1, ret, "%s", cred_cache);
 453     } else {
 454         ret = krb5_cc_default (context, &ccache);
 455         if (ret)
 456             krb5_err (context, 1, ret, "krb5_cc_resolve");
 457     }
 458
 459     ret = krb5_cc_get_principal (context, ccache, &principal);
 460     if (ret) {
 461         if(ret == ENOENT) {
 462             if (!do_test)
 463                 krb5_warnx(context, N_("No ticket file: %s", ""),
 464                            krb5_cc_get_name(context, ccache));
 465             return 1;
 466         } else
 467             krb5_err (context, 1, ret, "krb5_cc_get_principal");
 468     }
 469     if (do_test)
 470         exit_status = check_for_tgt (context, ccache, principal, NULL);
 471     else
 472         print_tickets (context, ccache, principal, do_verbose,
 473                        do_flags, do_hidden);
 474
 475     ret = krb5_cc_close (context, ccache);
 476     if (ret)
 477         krb5_err (context, 1, ret, "krb5_cc_close");
 478
 479     krb5_free_principal (context, principal);
 480     krb5_free_context (context);
 481     return exit_status;
 482 }
 483
 484 /*
 485  *
 486  */
 487
 488 static int
 489 list_caches(void)
 490 {
 491     krb5_cc_cache_cursor cursor;
 492     krb5_context context;
 493     krb5_error_code ret;
 494     krb5_ccache id;
 495     rtbl_t ct;
 496
 497     ret = krb5_init_context (&context);
 498     if (ret)
 499         errx (1, "krb5_init_context failed: %d", ret);
 500
 501     ret = krb5_cc_cache_get_first (context, NULL, &cursor);
 502     if (ret == KRB5_CC_NOSUPP)
 503         return 0;
 504     else if (ret)
 505         krb5_err (context, 1, ret, "krb5_cc_cache_get_first");
 506
 507     ct = rtbl_create();
 508     rtbl_add_column(ct, COL_NAME, 0);
 509     rtbl_add_column(ct, COL_CACHENAME, 0);
 510     rtbl_add_column(ct, COL_EXPIRES, 0);
 511     rtbl_set_prefix(ct, "   ");
 512     rtbl_set_column_prefix(ct, COL_NAME, "");
 513
 514     while (krb5_cc_cache_next (context, cursor, &id) == 0) {
 515         krb5_principal principal = NULL;
 516         int expired = 0;
 517         char *name;
 518         time_t t;
 519
 520         ret = krb5_cc_get_principal(context, id, &principal);
 521         if (ret)
 522             continue;
 523
 524         expired = check_for_tgt (context, id, principal, &t);
 525
 526         ret = krb5_cc_get_friendly_name(context, id, &name);
 527         if (ret == 0) {
 528             const char *str;
 529             rtbl_add_column_entry(ct, COL_NAME, name);
 530             rtbl_add_column_entry(ct, COL_CACHENAME,
 531                                   krb5_cc_get_name(context, id));
 532             if (expired)
 533                 str = N_(">>> Expired <<<", "");
 534             else
 535                 str = printable_time(t);
 536             rtbl_add_column_entry(ct, COL_EXPIRES, str);
 537             free(name);
 538         }
 539         krb5_cc_close(context, id);
 540         if (principal)
 541             krb5_free_principal(context, principal);
 542     }
 543
 544     krb5_cc_cache_end_seq_get(context, cursor);
 545
 546     rtbl_format(ct, stdout);
 547     rtbl_destroy(ct);
 548
 549     return 0;
 550 }
 551
 552 /*
 553  *
 554  */
 555
 556 static int version_flag         = 0;
 557 static int help_flag            = 0;
 558 static int do_verbose           = 0;
 559 static int do_list_caches       = 0;
 560 static int do_test              = 0;
 561 #ifndef NO_AFS
 562 static int do_tokens            = 0;
 563 #endif
 564 static int do_v5                = 1;
 565 static char *cred_cache;
 566 static int do_flags             = 0;
 567 static int do_hidden            = 0;
 568
 569 static struct getargs args[] = {
 570     { NULL, 'f', arg_flag, &do_flags },
 571     { "cache",                  'c', arg_string, &cred_cache,
 572       NP_("credentials cache to list", ""), "cache" },
 573     { "test",                   't', arg_flag, &do_test,
 574       NP_("test for having tickets", ""), NULL },
 575     { NULL,                     's', arg_flag, &do_test },
 576 #ifndef NO_AFS
 577     { "tokens",                 'T',   arg_flag, &do_tokens,
 578       NP_("display AFS tokens", ""), NULL },
 579 #endif
 580     { "v5",                     '5',    arg_flag, &do_v5,
 581       NP_("display v5 cred cache", ""), NULL},
 582     { "list-caches",            'l', arg_flag, &do_list_caches,
 583       NP_("verbose output", ""), NULL },
 584     { "verbose",                'v', arg_flag, &do_verbose,
 585       NP_("verbose output", ""), NULL },
 586     { "hidden",                 0,   arg_flag, &do_hidden,
 587       NP_("display hidden credentials", ""), NULL },
 588     { NULL,                     'a', arg_flag, &do_verbose },
 589     { NULL,                     'n', arg_flag, &do_verbose },
 590     { "version",                0,   arg_flag, &version_flag,
 591       NP_("print version", ""), NULL },
 592     { "help",                   0,   arg_flag, &help_flag,
 593       NULL, NULL}
 594 };
 595
 596 static void
 597 usage (int ret)
 598 {
 599     arg_printusage_i18n (args,
 600                          sizeof(args)/sizeof(*args),
 601                          N_("Usage: ", ""),
 602                          NULL,
 603                          "",
 604                          getarg_i18n);
 605     exit (ret);
 606 }
 607
 608 int
 609 main (int argc, char **argv)
 610 {
 611     int optidx = 0;
 612     int exit_status = 0;
 613
 614     setprogname (argv[0]);
 615
 616     setlocale (LC_ALL, "");
 617     bindtextdomain ("heimdal_kuser", HEIMDAL_LOCALEDIR);
 618     textdomain("heimdal_kuser");
 619
 620     if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
 621         usage(1);
 622
 623     if (help_flag)
 624         usage (0);
 625
 626     if(version_flag){
 627         print_version(NULL);
 628         exit(0);
 629     }
 630
 631     argc -= optidx;
 632
 633     if (argc != 0)
 634         usage (1);
 635
 636     if (do_list_caches) {
 637         exit_status = list_caches();
 638         return exit_status;
 639     }
 640
 641     if (do_v5)
 642         exit_status = display_v5_ccache (cred_cache, do_test,
 643                                          do_verbose, do_flags, do_hidden);
 644
 645     if (!do_test) {
 646 #ifndef NO_AFS
 647         if (do_tokens && k_hasafs ()) {
 648             if (do_v5)
 649                 printf ("\n");
 650             display_tokens (do_verbose);
 651         }
 652 #endif
 653     }
 654
 655     return exit_status;
 656 }