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