src/libpts/plugins/imv_attestation/attest.c

   1 /*
   2  * Copyright (C) 2011-2012 Andreas Steffen
   3  * HSR Hochschule fuer Technik Rapperswil
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License as published by the
   7  * Free Software Foundation; either version 2 of the License, or (at your
   8  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  12  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * for more details.
  14  */
  15
  16 #define _GNU_SOURCE
  17 #include <getopt.h>
  18 #include <unistd.h>
  19 #include <stdio.h>
  20 #include <string.h>
  21 #include <errno.h>
  22 #include <syslog.h>
  23
  24 #include <library.h>
  25 #include <utils/debug.h>
  26
  27 #include <imcv.h>
  28 #include <libpts.h>
  29 #include <pts/pts_meas_algo.h>
  30
  31 #include "attest_db.h"
  32 #include "attest_usage.h"
  33
  34 /**
  35  * global debug output variables
  36  */
  37 static int debug_level = 1;
  38 static bool stderr_quiet = TRUE;
  39
  40 /**
  41  * attest dbg function
  42  */
  43 static void attest_dbg(debug_t group, level_t level, char *fmt, ...)
  44 {
  45         int priority = LOG_INFO;
  46         char buffer[8192];
  47         char *current = buffer, *next;
  48         va_list args;
  49
  50         if (level <= debug_level)
  51         {
  52                 if (!stderr_quiet)
  53                 {
  54                         va_start(args, fmt);
  55                         vfprintf(stderr, fmt, args);
  56                         fprintf(stderr, "\n");
  57                         va_end(args);
  58                 }
  59
  60                 /* write in memory buffer first */
  61                 va_start(args, fmt);
  62                 vsnprintf(buffer, sizeof(buffer), fmt, args);
  63                 va_end(args);
  64
  65                 /* do a syslog with every line */
  66                 while (current)
  67                 {
  68                         next = strchr(current, '\n');
  69                         if (next)
  70                         {
  71                                 *(next++) = '\0';
  72                         }
  73                         syslog(priority, "%s\n", current);
  74                         current = next;
  75                 }
  76         }
  77 }
  78
  79 /**
  80  * global attestation database object
  81  */
  82 attest_db_t *attest;
  83
  84 /**
  85  * atexit handler to close db on shutdown
  86  */
  87 static void cleanup(void)
  88 {
  89         attest->destroy(attest);
  90         libpts_deinit();
  91         libimcv_deinit();
  92         closelog();
  93 }
  94
  95 static void do_args(int argc, char *argv[])
  96 {
  97         enum {
  98                 OP_UNDEF,
  99                 OP_USAGE,
 100                 OP_KEYS,
 101                 OP_COMPONENTS,
 102                 OP_FILES,
 103                 OP_HASHES,
 104                 OP_MEASUREMENTS,
 105                 OP_PRODUCTS,
 106                 OP_ADD,
 107                 OP_DEL,
 108         } op = OP_UNDEF;
 109
 110         /* reinit getopt state */
 111         optind = 0;
 112
 113         while (TRUE)
 114         {
 115                 int c;
 116
 117                 struct option long_opts[] = {
 118                         { "help", no_argument, NULL, 'h' },
 119                         { "components", no_argument, NULL, 'c' },
 120                         { "files", no_argument, NULL, 'f' },
 121                         { "keys", no_argument, NULL, 'k' },
 122                         { "products", no_argument, NULL, 'p' },
 123                         { "hashes", no_argument, NULL, 'H' },
 124                         { "measurements", no_argument, NULL, 'm' },
 125                         { "add", no_argument, NULL, 'a' },
 126                         { "delete", no_argument, NULL, 'd' },
 127                         { "del", no_argument, NULL, 'd' },
 128                         { "aik", required_argument, NULL, 'A' },
 129                         { "component", required_argument, NULL, 'C' },
 130                         { "comp", required_argument, NULL, 'C' },
 131                         { "directory", required_argument, NULL, 'D' },
 132                         { "dir", required_argument, NULL, 'D' },
 133                         { "file", required_argument, NULL, 'F' },
 134                         { "sha1-ima", no_argument, NULL, 'I' },
 135                         { "key", required_argument, NULL, 'K' },
 136                         { "owner", required_argument, NULL, 'O' },
 137                         { "product", required_argument, NULL, 'P' },
 138                         { "relative", no_argument, NULL, 'R' },
 139                         { "rel", no_argument, NULL, 'R' },
 140                         { "sequence", required_argument, NULL, 'S' },
 141                         { "seq", required_argument, NULL, 'S' },
 142                         { "sha1", no_argument, NULL, '1' },
 143                         { "sha256", no_argument, NULL, '2' },
 144                         { "sha384", no_argument, NULL, '3' },
 145                         { "did", required_argument, NULL, '4' },
 146                         { "fid", required_argument, NULL, '5' },
 147                         { "pid", required_argument, NULL, '6' },
 148                         { "cid", required_argument, NULL, '7' },
 149                         { "kid", required_argument, NULL, '8' },
 150                         { 0,0,0,0 }
 151                 };
 152
 153                 c = getopt_long(argc, argv, "", long_opts, NULL);
 154                 switch (c)
 155                 {
 156                         case EOF:
 157                                 break;
 158                         case 'h':
 159                                 op = OP_USAGE;
 160                                 break;
 161                         case 'c':
 162                                 op = OP_COMPONENTS;
 163                                 continue;
 164                         case 'f':
 165                                 op = OP_FILES;
 166                                 continue;
 167                         case 'k':
 168                                 op = OP_KEYS;
 169                                 continue;
 170                         case 'p':
 171                                 op = OP_PRODUCTS;
 172                                 continue;
 173                         case 'H':
 174                                 op = OP_HASHES;
 175                                 continue;
 176                         case 'm':
 177                                 op = OP_MEASUREMENTS;
 178                                 continue;
 179                         case 'a':
 180                                 op = OP_ADD;
 181                                 continue;
 182                         case 'd':
 183                                 op = OP_DEL;
 184                                 continue;
 185                         case 'A':
 186                         {
 187                                 certificate_t *aik_cert;
 188                                 public_key_t *aik_key;
 189                                 chunk_t aik;
 190
 191                                 aik_cert = lib->creds->create(lib->creds, CRED_CERTIFICATE,
 192                                                                 CERT_X509, BUILD_FROM_FILE, optarg, BUILD_END);
 193                                 if (!aik_cert)
 194                                 {
 195                                         printf("AIK certificate '%s' could not be loaded\n", optarg);
 196                                         exit(EXIT_FAILURE);
 197                                 }
 198                                 aik_key = aik_cert->get_public_key(aik_cert);
 199                                 aik_cert->destroy(aik_cert);
 200
 201                                 if (!aik_key)
 202                                 {
 203                                         printf("AIK public key could not be retrieved\n");
 204                                         exit(EXIT_FAILURE);
 205                                 }
 206                                 if (!aik_key->get_fingerprint(aik_key, KEYID_PUBKEY_INFO_SHA1,
 207                                                                                           &aik))
 208                                 {
 209                                         printf("AIK fingerprint could not be computed\n");
 210                                         aik_key->destroy(aik_key);
 211                                         exit(EXIT_FAILURE);
 212                                 }
 213                                 aik = chunk_clone(aik);
 214                                 aik_key->destroy(aik_key);
 215
 216                                 if (!attest->set_key(attest, aik, op == OP_ADD))
 217                                 {
 218                                         exit(EXIT_FAILURE);
 219                                 }
 220                                 continue;
 221                         }
 222                         case 'C':
 223                                 if (!attest->set_component(attest, optarg, op == OP_ADD))
 224                                 {
 225                                         exit(EXIT_FAILURE);
 226                                 }
 227                                 continue;
 228                         case 'D':
 229                                 if (!attest->set_directory(attest, optarg, op == OP_ADD))
 230                                 {
 231                                         exit(EXIT_FAILURE);
 232                                 }
 233                                 continue;
 234                         case 'F':
 235                                 if (!attest->set_file(attest, optarg, op == OP_ADD))
 236                                 {
 237                                         exit(EXIT_FAILURE);
 238                                 }
 239                                 continue;
 240                         case 'I':
 241                                 attest->set_algo(attest, PTS_MEAS_ALGO_SHA1_IMA);
 242                                 continue;
 243                         case 'K':
 244                         {
 245                                 chunk_t aik;
 246
 247                                 aik = chunk_from_hex(chunk_create(optarg, strlen(optarg)), NULL);
 248                                 if (!attest->set_key(attest, aik, op == OP_ADD))
 249                                 {
 250                                         exit(EXIT_FAILURE);
 251                                 }
 252                                 continue;
 253                         }
 254                         case 'O':
 255                                 attest->set_owner(attest, optarg);
 256                                 continue;
 257                         case 'P':
 258                                 if (!attest->set_product(attest, optarg, op == OP_ADD))
 259                                 {
 260                                         exit(EXIT_FAILURE);
 261                                 }
 262                                 continue;
 263                         case 'R':
 264                                 attest->set_relative(attest);
 265                                 continue;
 266                         case 'S':
 267                                 attest->set_sequence(attest, atoi(optarg));
 268                                 continue;
 269                         case '1':
 270                                 attest->set_algo(attest, PTS_MEAS_ALGO_SHA1);
 271                                 continue;
 272                         case '2':
 273                                 attest->set_algo(attest, PTS_MEAS_ALGO_SHA256);
 274                                 continue;
 275                         case '3':
 276                                 attest->set_algo(attest, PTS_MEAS_ALGO_SHA384);
 277                                 continue;
 278                         case '4':
 279                                 if (!attest->set_did(attest, atoi(optarg)))
 280                                 {
 281                                         exit(EXIT_FAILURE);
 282                                 }
 283                                 continue;
 284                         case '5':
 285                                 if (!attest->set_fid(attest, atoi(optarg)))
 286                                 {
 287                                         exit(EXIT_FAILURE);
 288                                 }
 289                                 continue;
 290                         case '6':
 291                                 if (!attest->set_pid(attest, atoi(optarg)))
 292                                 {
 293                                         exit(EXIT_FAILURE);
 294                                 }
 295                                 continue;
 296                         case '7':
 297                                 if (!attest->set_cid(attest, atoi(optarg)))
 298                                 {
 299                                         exit(EXIT_FAILURE);
 300                                 }
 301                                 continue;
 302                         case '8':
 303                                 if (!attest->set_kid(attest, atoi(optarg)))
 304                                 {
 305                                         exit(EXIT_FAILURE);
 306                                 }
 307                                 continue;
 308                 }
 309                 break;
 310         }
 311
 312         switch (op)
 313         {
 314                 case OP_USAGE:
 315                         usage();
 316                         break;
 317                 case OP_PRODUCTS:
 318                         attest->list_products(attest);
 319                         break;
 320                 case OP_KEYS:
 321                         attest->list_keys(attest);
 322                         break;
 323                 case OP_COMPONENTS:
 324                         attest->list_components(attest);
 325                         break;
 326                 case OP_FILES:
 327                         attest->list_files(attest);
 328                         break;
 329                 case OP_HASHES:
 330                         attest->list_hashes(attest);
 331                         break;
 332                 case OP_MEASUREMENTS:
 333                         attest->list_measurements(attest);
 334                         break;
 335                 case OP_ADD:
 336                         attest->add(attest);
 337                         break;
 338                 case OP_DEL:
 339                         attest->delete(attest);
 340                         break;
 341                 default:
 342                         usage();
 343                         exit(EXIT_FAILURE);
 344         }
 345 }
 346
 347 int main(int argc, char *argv[])
 348 {
 349         char *uri;
 350
 351         /* enable attest debugging hook */
 352         dbg = attest_dbg;
 353         openlog("attest", 0, LOG_DEBUG);
 354
 355         atexit(library_deinit);
 356
 357         /* initialize library */
 358         if (!library_init(NULL))
 359         {
 360                 exit(SS_RC_LIBSTRONGSWAN_INTEGRITY);
 361         }
 362         if (!lib->plugins->load(lib->plugins, NULL,
 363                         lib->settings->get_str(lib->settings, "attest.load", PLUGINS)))
 364         {
 365                 exit(SS_RC_INITIALIZATION_FAILED);
 366         }
 367
 368         uri = lib->settings->get_str(lib->settings, "attest.database", NULL);
 369         if (!uri)
 370         {
 371                 fprintf(stderr, "database URI attest.database not set.\n");
 372                 exit(SS_RC_INITIALIZATION_FAILED);
 373         }
 374         attest = attest_db_create(uri);
 375         if (!attest)
 376         {
 377                 exit(SS_RC_INITIALIZATION_FAILED);
 378         }
 379         atexit(cleanup);
 380         libimcv_init();
 381         libpts_init();
 382
 383         do_args(argc, argv);
 384
 385         exit(EXIT_SUCCESS);
 386 }
 387