scutil.tproj/prefs.c

   1 /*
   2  * Copyright (c) 2003-2008, 2011-2017, 2019, 2020 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 /*
  25  * Modification History
  26  *
  27  * May 29, 2003                 Allan Nathanson <ajn@apple.com>
  28  * - initial revision
  29  */
  30
  31 #include <TargetConditionals.h>
  32 #include <dlfcn.h>
  33 #include <unistd.h>
  34 #include <sys/param.h>
  35 #include <sys/types.h>
  36 #include <sys/stat.h>
  37
  38 #include "scutil.h"
  39 #include "commands.h"
  40 #include "prefs.h"
  41
  42 #include "SCNetworkConfigurationInternal.h"
  43
  44 #if     !TARGET_OS_IPHONE
  45 #include <Security/Authorization.h>
  46 #endif  /* !TARGET_OS_IPHONE */
  47
  48
  49 /* -------------------- */
  50
  51
  52 #if     !TARGET_OS_IPHONE
  53 static void *
  54 __loadSecurity(void) {
  55         static void             *image  = NULL;
  56         static dispatch_once_t  once;
  57
  58         dispatch_once(&once, ^{
  59                 image = _SC_dlopen("/System/Library/Frameworks/Security.framework/Security");
  60         });
  61
  62         return image;
  63 }
  64
  65
  66 static OSStatus
  67 _AuthorizationCreate(const AuthorizationRights *rights, const AuthorizationEnvironment *environment, AuthorizationFlags flags, AuthorizationRef *authorization)
  68 {
  69         #undef AuthorizationCreate
  70         static typeof (AuthorizationCreate) *dyfunc = NULL;
  71         if (dyfunc == NULL) {
  72                 void *image = __loadSecurity();
  73                 if (image) dyfunc = dlsym(image, "AuthorizationCreate");
  74         }
  75         return dyfunc ? dyfunc(rights, environment, flags, authorization) : -1;
  76 }
  77 #define AuthorizationCreate _AuthorizationCreate
  78
  79
  80 static OSStatus
  81 _AuthorizationFree(AuthorizationRef authorization, AuthorizationFlags flags)
  82 {
  83         #undef AuthorizationFree
  84         static typeof (AuthorizationFree) *dyfunc = NULL;
  85         if (dyfunc == NULL) {
  86                 void *image = __loadSecurity();
  87                 if (image) dyfunc = dlsym(image, "AuthorizationFree");
  88         }
  89         return dyfunc ? dyfunc(authorization, flags) : -1;
  90 }
  91 #define AuthorizationFree _AuthorizationFree
  92
  93
  94 /* -------------------- */
  95
  96 __private_extern__
  97 AuthorizationRef
  98 _prefs_AuthorizationCreate()
  99 {
 100         AuthorizationRef        authorization   = NULL;
 101
 102         if (getenv("SCPREFERENCES_USE_ENTITLEMENTS") != NULL) {
 103                 authorization = kSCPreferencesUseEntitlementAuthorization;
 104         } else {
 105                 AuthorizationFlags      flags   = kAuthorizationFlagDefaults;
 106                 OSStatus                status;
 107
 108                 status = AuthorizationCreate(NULL,
 109                                              kAuthorizationEmptyEnvironment,
 110                                              flags,
 111                                              &authorization);
 112                 if (status != errAuthorizationSuccess) {
 113                         SCPrint(TRUE,
 114                                 stdout,
 115                                 CFSTR("AuthorizationCreate() failed: status = %d\n"),
 116                                 (int)status);
 117                         return NULL;
 118                 }
 119         }
 120
 121         return authorization;
 122 }
 123
 124
 125 __private_extern__
 126 void
 127 _prefs_AuthorizationFree(AuthorizationRef authorization)
 128 {
 129         if (authorization != kSCPreferencesUseEntitlementAuthorization) {
 130                 AuthorizationFree(authorization, kAuthorizationFlagDefaults);
 131 //              AuthorizationFree(authorization, kAuthorizationFlagDestroyRights);
 132         }
 133
 134         return;
 135 }
 136
 137 #endif  /* !TARGET_OS_IPHONE */
 138
 139 /* -------------------- */
 140
 141
 142 __private_extern__ Boolean      _prefs_changed  = FALSE;
 143
 144
 145 __private_extern__
 146 Boolean
 147 _prefs_open(CFStringRef name, const char *path)
 148 {
 149         char                    *env            = NULL;
 150         CFMutableDictionaryRef  options         = NULL;
 151         CFStringRef             prefsID         = NULL;
 152         Boolean                 useHelper       = FALSE;
 153         Boolean                 useOptions      = FALSE;
 154
 155         authorization = NULL;
 156
 157         if (geteuid() != 0) {
 158                 // if we need to use a helper
 159                 useHelper = TRUE;
 160
 161 #if     !TARGET_OS_IPHONE
 162                 authorization = _prefs_AuthorizationCreate();
 163 #else
 164                 authorization = kSCPreferencesUseEntitlementAuthorization;
 165 #endif  /* !TARGET_OS_IPHONE */
 166         }
 167
 168         if (getenv("SCPREFERENCES_REMOVE_WHEN_EMPTY") != NULL) {
 169                 if (options == NULL) {
 170                         options = CFDictionaryCreateMutable(NULL,
 171                                                             0,
 172                                                             &kCFTypeDictionaryKeyCallBacks,
 173                                                             &kCFTypeDictionaryValueCallBacks);
 174                         useOptions = TRUE;
 175                 }
 176                 CFDictionarySetValue(options, kSCPreferencesOptionRemoveWhenEmpty, kCFBooleanTrue);
 177         }
 178
 179         env = getenv("SCPREFERENCES_PROTECTION_CLASS");
 180         if (env != NULL) {
 181                 CFStringRef     str;
 182
 183                 if (options == NULL) {
 184                         options = CFDictionaryCreateMutable(NULL,
 185                                                             0,
 186                                                             &kCFTypeDictionaryKeyCallBacks,
 187                                                             &kCFTypeDictionaryValueCallBacks);
 188                         useOptions = TRUE;
 189                 }
 190                 str = CFStringCreateWithCString(NULL, env, kCFStringEncodingASCII);
 191                 CFDictionarySetValue(options, kSCPreferencesOptionProtectionClass, str);
 192                 CFRelease(str);
 193         }
 194
 195         if (path != NULL) {
 196                 prefsPath = strdup(path);
 197                 prefsID = CFStringCreateWithCString(NULL, path, kCFStringEncodingUTF8);
 198         }
 199
 200         if (!useHelper && !useOptions) {
 201                 // if no helper/options needed
 202                 prefs = SCPreferencesCreate(NULL, name, prefsID);
 203         } else if (!useOptions) {
 204                 // if no options needed
 205                 prefs = SCPreferencesCreateWithAuthorization(NULL, name, prefsID, authorization);
 206         } else {
 207                 prefs = SCPreferencesCreateWithOptions(NULL, name, prefsID, authorization, options);
 208                 CFRelease(options);
 209         }
 210
 211         if (prefsID != NULL) CFRelease(prefsID);
 212         if (prefs == NULL) {
 213                 if (prefsPath != NULL) free(prefsPath);
 214                 prefsPath = NULL;
 215                 return FALSE;
 216         }
 217
 218         _prefs_changed = FALSE;
 219         return TRUE;
 220 }
 221
 222
 223 __private_extern__
 224 void
 225 _prefs_save()
 226 {
 227         if (!SCPreferencesCommitChanges(prefs)) {
 228                 switch (SCError()) {
 229                         case kSCStatusAccessError :
 230                                 SCPrint(TRUE, stderr, CFSTR("Permission denied.\n"));
 231                                 break;
 232                         default :
 233                                 SCPrint(TRUE,
 234                                         stdout,
 235                                         CFSTR("SCPreferencesCommitChanges() failed: %s\n"),
 236                                         SCErrorString(SCError()));
 237                                 break;
 238                 }
 239                 exit (1);
 240         }
 241
 242         if (!SCPreferencesApplyChanges(prefs)) {
 243                 SCPrint(TRUE,
 244                         stdout,
 245                         CFSTR("SCPreferencesApplyChanges() failed: %s\n"),
 246                         SCErrorString(SCError()));
 247                 exit (1);
 248         }
 249
 250         _prefs_changed = FALSE;
 251
 252         if (ni_prefs != NULL) {
 253                 if (!SCPreferencesCommitChanges(ni_prefs)) {
 254                         switch (SCError()) {
 255                                 case kSCStatusAccessError :
 256                                         SCPrint(TRUE, stderr, CFSTR("Permission denied.\n"));
 257                                         break;
 258                                 default :
 259                                         SCPrint(TRUE,
 260                                                 stdout,
 261                                                 CFSTR("SCPreferencesCommitChanges( <NetworkInterfaces.plist> ) failed: %s\n"),
 262                                                 SCErrorString(SCError()));
 263                                         break;
 264                         }
 265                         exit (1);
 266                 }
 267
 268                 if (!SCPreferencesApplyChanges(ni_prefs)) {
 269                         SCPrint(TRUE,
 270                                 stdout,
 271                                 CFSTR("SCPreferencesApplyChanges( <NetworkInterfaces.plist> ) failed: %s\n"),
 272                                 SCErrorString(SCError()));
 273                         exit (1);
 274                 }
 275         }
 276
 277         return;
 278 }
 279
 280
 281 __private_extern__
 282 void
 283 _prefs_close()
 284 {
 285         if (prefsPath != NULL) {
 286                 free(prefsPath);
 287                 prefsPath = NULL;
 288         }
 289
 290         if (prefs != NULL) {
 291                 CFRelease(prefs);
 292                 prefs = NULL;
 293                 _prefs_changed = FALSE;
 294         }
 295
 296         if (ni_prefs != NULL) {
 297                 CFRelease(ni_prefs);
 298                 ni_prefs = NULL;
 299         }
 300
 301         if (authorization != NULL) {
 302 #if     !TARGET_OS_IPHONE
 303                 _prefs_AuthorizationFree(authorization);
 304 #else   /* !TARGET_OS_IPHONE */
 305                 // Uh...if authorization isn't NULL, something went horribly wrong.
 306 #endif  /* !TARGET_OS_IPHONE */
 307                 authorization = NULL;
 308         }
 309
 310         return;
 311 }
 312
 313
 314 __private_extern__
 315 Boolean
 316 _prefs_commitRequired(int argc, char **argv, const char *command)
 317 {
 318         if (_prefs_changed) {
 319                 if ((currentInput != NULL)                      &&
 320                     isatty(fileno(currentInput->fp))            &&
 321                     ((argc < 1) || (strcmp(argv[0], "!") != 0))
 322                    ) {
 323                         SCPrint(TRUE, stdout,
 324                                 CFSTR("preference changes have not been committed\n"
 325                                       "use \"commit\" to save changes"));
 326                         if (command != NULL) {
 327                                 SCPrint(TRUE, stdout,
 328                                         CFSTR(" or \"%s !\" to abandon changes"),
 329                                         command);
 330                         }
 331                         SCPrint(TRUE, stdout, CFSTR("\n"));
 332                         return TRUE;
 333                 }
 334
 335                 SCPrint(TRUE, stdout, CFSTR("preference changes abandoned\n"));
 336         }
 337
 338         return FALSE;
 339 }
 340
 341
 342 /* -------------------- */
 343
 344
 345 static void
 346 get_ComputerName(int argc, char **argv)
 347 {
 348 #pragma unused(argc)
 349 #pragma unused(argv)
 350         CFStringEncoding        encoding;
 351         CFStringRef             hostname;
 352
 353         hostname = SCDynamicStoreCopyComputerName(NULL, &encoding);
 354         if (hostname == NULL) {
 355                 int     sc_status       = SCError();
 356
 357                 switch (sc_status) {
 358                         case kSCStatusNoKey :
 359                                 SCPrint(TRUE,
 360                                         stderr,
 361                                         CFSTR("ComputerName: not set\n"));
 362                                 break;
 363                         default :
 364                                 SCPrint(TRUE,
 365                                         stderr,
 366                                         CFSTR("SCDynamicStoreCopyComputerName() failed: %s\n"),
 367                                         SCErrorString(SCError()));
 368                                 break;
 369                 }
 370                 exit (1);
 371         }
 372
 373         SCPrint(TRUE, stdout, CFSTR("%@\n"), hostname);
 374         CFRelease(hostname);
 375
 376         exit(0);
 377 }
 378
 379
 380 static void
 381 set_ComputerName(int argc, char **argv)
 382 {
 383         CFStringRef     hostname        = NULL;
 384         Boolean         ok;
 385
 386         ok = _prefs_open(CFSTR("scutil --set ComputerName"), NULL);
 387         if (!ok) {
 388                 SCPrint(TRUE,
 389                         stdout,
 390                         CFSTR("Could not open prefs: %s\n"),
 391                         SCErrorString(SCError()));
 392                 exit(1);
 393         }
 394
 395         if (argc == 0) {
 396                 CFStringEncoding        old_encoding;
 397                 CFStringRef             old_hostname;
 398
 399                 old_hostname = SCDynamicStoreCopyComputerName(NULL, &old_encoding);
 400                 hostname = _copyStringFromSTDIN(CFSTR("ComputerName"), old_hostname);
 401                 if (old_hostname) CFRelease(old_hostname);
 402         } else if (strlen(argv[0]) > 0) {
 403                 hostname = CFStringCreateWithCString(NULL, argv[0], kCFStringEncodingUTF8);
 404         }
 405
 406         ok = SCPreferencesSetComputerName(prefs, hostname, kCFStringEncodingUTF8);
 407         if (hostname != NULL) CFRelease(hostname);
 408         if (!ok) {
 409                 SCPrint(TRUE,
 410                         stdout,
 411                         CFSTR("Could not open prefs: %s\n"),
 412                         SCErrorString(SCError()));
 413                 _prefs_close();
 414                 exit (1);
 415         }
 416
 417         _prefs_save();
 418         _prefs_close();
 419         exit(0);
 420 }
 421
 422
 423 static void
 424 get_HostName(int argc, char **argv)
 425 {
 426 #pragma unused(argc)
 427 #pragma unused(argv)
 428         CFStringRef     hostname;
 429         Boolean         ok;
 430
 431         ok = _prefs_open(CFSTR("scutil --get HostName"), NULL);
 432         if (!ok) {
 433                 SCPrint(TRUE,
 434                         stdout,
 435                         CFSTR("SCPreferencesCreate() failed: %s\n"),
 436                         SCErrorString(SCError()));
 437                 exit(1);
 438         }
 439
 440         hostname = SCPreferencesGetHostName(prefs);
 441         if (hostname == NULL) {
 442                 int     sc_status       = SCError();
 443
 444                 switch (sc_status) {
 445                         case kSCStatusNoKey :
 446                                 SCPrint(TRUE,
 447                                         stderr,
 448                                         CFSTR("HostName: not set\n"));
 449                                 break;
 450                         default :
 451                                 SCPrint(TRUE,
 452                                         stderr,
 453                                         CFSTR("SCPreferencesGetHostName() failed: %s\n"),
 454                                         SCErrorString(SCError()));
 455                                 break;
 456                 }
 457                 _prefs_close();
 458                 exit (1);
 459         }
 460
 461         SCPrint(TRUE, stdout, CFSTR("%@\n"), hostname);
 462         _prefs_close();
 463         exit(0);
 464 }
 465
 466
 467 static void
 468 set_HostName(int argc, char **argv)
 469 {
 470         CFStringRef     hostname = NULL;
 471         Boolean         ok;
 472
 473         ok = _prefs_open(CFSTR("scutil --set HostName"), NULL);
 474         if (!ok) {
 475                 SCPrint(TRUE,
 476                         stdout,
 477                         CFSTR("Could not open prefs: %s\n"),
 478                         SCErrorString(SCError()));
 479                 exit(1);
 480         }
 481
 482         if (argc == 0) {
 483                 hostname = _copyStringFromSTDIN(CFSTR("HostName"), SCPreferencesGetHostName(prefs));
 484         } else if (strlen(argv[0]) > 0) {
 485                 hostname = CFStringCreateWithCString(NULL, argv[0], kCFStringEncodingUTF8);
 486         }
 487
 488         ok = SCPreferencesSetHostName(prefs, hostname);
 489         if (hostname != NULL) CFRelease(hostname);
 490         if (!ok) {
 491                 SCPrint(TRUE,
 492                         stderr,
 493                         CFSTR("SCPreferencesSetHostName() failed: %s\n"),
 494                         SCErrorString(SCError()));
 495                 _prefs_close();
 496                 exit (1);
 497         }
 498
 499         _prefs_save();
 500         _prefs_close();
 501         exit(0);
 502 }
 503
 504
 505 static void
 506 get_LocalHostName(int argc, char **argv)
 507 {
 508 #pragma unused(argc)
 509 #pragma unused(argv)
 510         CFStringRef     hostname;
 511
 512         hostname = SCDynamicStoreCopyLocalHostName(NULL);
 513         if (hostname == NULL) {
 514                 int     sc_status       = SCError();
 515
 516                 switch (sc_status) {
 517                         case kSCStatusNoKey :
 518                                 SCPrint(TRUE,
 519                                         stderr,
 520                                         CFSTR("LocalHostName: not set\n"));
 521                                 break;
 522                         default :
 523                                 SCPrint(TRUE,
 524                                         stderr,
 525                                         CFSTR("SCDynamicStoreCopyLocalHostName() failed: %s\n"),
 526                                         SCErrorString(SCError()));
 527                                 break;
 528                 }
 529                 exit (1);
 530         }
 531
 532         SCPrint(TRUE, stdout, CFSTR("%@\n"), hostname);
 533         CFRelease(hostname);
 534
 535         exit(0);
 536 }
 537
 538
 539 static void
 540 set_LocalHostName(int argc, char **argv)
 541 {
 542         CFStringRef     hostname        = NULL;
 543         Boolean         ok;
 544
 545         ok = _prefs_open(CFSTR("scutil --set LocalHostName"), NULL);
 546         if (!ok) {
 547                 SCPrint(TRUE,
 548                         stdout,
 549                         CFSTR("Could not open prefs: %s\n"),
 550                         SCErrorString(SCError()));
 551                 exit(1);
 552         }
 553
 554         if (argc == 0) {
 555                 CFStringRef     old_hostname;
 556
 557                 old_hostname = SCDynamicStoreCopyLocalHostName(NULL);
 558                 hostname = _copyStringFromSTDIN(CFSTR("LocalHostName"), old_hostname);
 559                 if (old_hostname) CFRelease(old_hostname);
 560         } else if (strlen(argv[0]) > 0) {
 561                 hostname = CFStringCreateWithCString(NULL, argv[0], kCFStringEncodingUTF8);
 562         }
 563
 564         ok = SCPreferencesSetLocalHostName(prefs, hostname);
 565         if (hostname != NULL) CFRelease(hostname);
 566         if (!ok) {
 567                 SCPrint(TRUE,
 568                         stderr,
 569                         CFSTR("SCPreferencesSetLocalHostName() failed: %s\n"),
 570                         SCErrorString(SCError()));
 571                 _prefs_close();
 572                 exit (1);
 573         }
 574
 575         _prefs_save();
 576         _prefs_close();
 577         exit(0);
 578 }
 579
 580
 581 /* -------------------- */
 582
 583
 584 typedef void (*pref_func) (int argc, char **argv);
 585
 586 static const struct {
 587         char            *pref;
 588         pref_func       get;
 589         pref_func       set;
 590 } pref_keys[] = {
 591         { "ComputerName",       get_ComputerName,       set_ComputerName        },
 592         { "HostName",           get_HostName,           set_HostName            },
 593         { "LocalHostName",      get_LocalHostName,      set_LocalHostName       }
 594 };
 595 #define N_PREF_KEYS     (sizeof(pref_keys) / sizeof(pref_keys[0]))
 596
 597
 598 __private_extern__
 599 int
 600 findPref(char *pref)
 601 {
 602         int     i;
 603
 604         for (i = 0; i < (int)N_PREF_KEYS; i++) {
 605                 if (strcmp(pref, pref_keys[i].pref) == 0) {
 606                         return i;
 607                 }
 608         }
 609
 610         return -1;
 611 }
 612
 613
 614 __private_extern__
 615 void
 616 do_getPref(char *pref, int argc, char **argv)
 617 {
 618         int     i;
 619
 620         if (argc == 0) {
 621                 i = findPref(pref);
 622                 if (i >= 0) {
 623                         (*pref_keys[i].get)(argc, argv);
 624                 }
 625                 return;
 626         }
 627
 628         // process extended get
 629         // ie. scutil --get <filename> <prefs path> <key>
 630         do_prefs_init();
 631
 632         do_prefs_open(argc, argv);
 633         if (SCError() != kSCStatusOK) {
 634                 SCPrint(TRUE, stderr, CFSTR("%s\n"), SCErrorString(SCError()));
 635                 _prefs_close();
 636                 exit(1);
 637         }
 638
 639         do_prefs_get(--argc, ++argv);
 640         if (value != NULL) {
 641                 CFStringRef key;
 642                 CFStringRef prefs_val;
 643
 644                 key = CFStringCreateWithCString(NULL, *(++argv), kCFStringEncodingUTF8);
 645                 prefs_val = CFDictionaryGetValue(value, key);
 646                 CFRelease(key);
 647
 648                 if (prefs_val != NULL) {
 649                         SCPrint(TRUE, stdout, CFSTR("%@\n"), prefs_val);
 650                         _prefs_close();
 651                         exit(0);
 652                 }
 653         }
 654
 655         // if path or key not found
 656         _prefs_close();
 657         exit(1);
 658 }
 659
 660
 661 __private_extern__
 662 void
 663 do_setPref(char *pref, int argc, char **argv)
 664 {
 665         int     i;
 666
 667         i = findPref(pref);
 668         if (i >= 0) {
 669                 (*pref_keys[i].set)(argc, argv);
 670         }
 671         return;
 672 }
 673
 674
 675 /* -------------------- */
 676
 677
 678 __private_extern__
 679 void
 680 do_prefs_init()
 681 {
 682         return;
 683 }
 684
 685
 686 __private_extern__
 687 void
 688 do_prefs_open(int argc, char **argv)
 689 {
 690         Boolean         ok;
 691
 692         if (prefs != NULL) {
 693                 if (_prefs_commitRequired(argc, argv, "close")) {
 694                         return;
 695                 }
 696
 697                 do_prefs_close(0, NULL);
 698         }
 699
 700         ok = _prefs_open(CFSTR("scutil --prefs"), (argc > 0) ? argv[0] : NULL);
 701         if (!ok) {
 702                 SCPrint(TRUE,
 703                         stdout,
 704                         CFSTR("Could not open prefs: %s\n"),
 705                         SCErrorString(SCError()));
 706                 return;
 707         }
 708
 709         return;
 710 }
 711
 712
 713 __private_extern__
 714 void
 715 do_prefs_lock(int argc, char **argv)
 716 {
 717 #pragma unused(argv)
 718         Boolean wait    = (argc > 0) ? TRUE : FALSE;
 719
 720         if (!SCPreferencesLock(prefs, wait)) {
 721                 SCPrint(TRUE, stdout, CFSTR("%s\n"), SCErrorString(SCError()));
 722                 return;
 723         }
 724
 725         return;
 726 }
 727
 728
 729 __private_extern__
 730 void
 731 do_prefs_unlock(int argc, char **argv)
 732 {
 733 #pragma unused(argc)
 734 #pragma unused(argv)
 735         if (!SCPreferencesUnlock(prefs)) {
 736                 SCPrint(TRUE, stdout, CFSTR("%s\n"), SCErrorString(SCError()));
 737                 return;
 738         }
 739
 740         return;
 741 }
 742
 743
 744 __private_extern__
 745 void
 746 do_prefs_commit(int argc, char **argv)
 747 {
 748 #pragma unused(argc)
 749 #pragma unused(argv)
 750         if (!SCPreferencesCommitChanges(prefs)) {
 751                 SCPrint(TRUE, stdout, CFSTR("%s\n"), SCErrorString(SCError()));
 752                 return;
 753         }
 754
 755         _prefs_changed = FALSE;
 756         return;
 757 }
 758
 759
 760 __private_extern__
 761 void
 762 do_prefs_apply(int argc, char **argv)
 763 {
 764 #pragma unused(argc)
 765 #pragma unused(argv)
 766         if (!SCPreferencesApplyChanges(prefs)) {
 767                 SCPrint(TRUE, stdout, CFSTR("%s\n"), SCErrorString(SCError()));
 768         }
 769
 770         return;
 771 }
 772
 773
 774 __private_extern__
 775 void
 776 do_prefs_close(int argc, char **argv)
 777 {
 778         if (_prefs_commitRequired(argc, argv, "close")) {
 779                 return;
 780         }
 781
 782         _prefs_close();
 783         return;
 784 }
 785
 786
 787 __private_extern__
 788 void
 789 do_prefs_quit(int argc, char **argv)
 790 {
 791         if (_prefs_commitRequired(argc, argv, "quit")) {
 792                 return;
 793         }
 794
 795         _prefs_close();
 796
 797         termRequested = TRUE;
 798         return;
 799 }
 800
 801
 802 __private_extern__
 803 void
 804 do_prefs_synchronize(int argc, char **argv)
 805 {
 806 #pragma unused(argc)
 807 #pragma unused(argv)
 808         SCPreferencesSynchronize(prefs);
 809         if (ni_prefs != NULL) {
 810                 SCPreferencesSynchronize(ni_prefs);
 811         }
 812
 813         return;
 814 }
 815
 816
 817 static CFComparisonResult
 818 sort_paths(const void *p1, const void *p2, void *context)
 819 {
 820 #pragma unused(context)
 821         CFStringRef path1 = (CFStringRef)p1;
 822         CFStringRef path2 = (CFStringRef)p2;
 823         return CFStringCompare(path1, path2, 0);
 824 }
 825
 826
 827 __private_extern__
 828 void
 829 do_prefs_list(int argc, char **argv)
 830 {
 831         int                     i;
 832         CFIndex                 n;
 833         CFMutableArrayRef       paths           = NULL;
 834         CFStringRef             prefix;
 835         CFDictionaryRef         entity;
 836
 837         prefix = CFStringCreateWithCString(NULL,
 838                                            (argc >= 1) ? argv[0] : "/",
 839                                            kCFStringEncodingUTF8);
 840
 841         entity = SCPreferencesPathGetValue(prefs, prefix);
 842         if (entity == NULL) {
 843                 SCPrint(TRUE, stdout, CFSTR("  %s\n"), SCErrorString(SCError()));
 844                 goto done;
 845         }
 846
 847         paths = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
 848
 849         n = isA_CFDictionary(entity) ? CFDictionaryGetCount(entity) : 0;
 850         if (n > 0) {
 851                 CFIndex         i;
 852                 const void **   keys;
 853                 const void **   vals;
 854
 855                 keys = CFAllocatorAllocate(NULL, n * sizeof(CFStringRef), 0);
 856                 vals = CFAllocatorAllocate(NULL, n * sizeof(CFPropertyListRef), 0);
 857                 CFDictionaryGetKeysAndValues(entity, keys, vals);
 858                 for (i = 0; i < n; i++) {
 859                         if (isA_CFDictionary(vals[i])) {
 860                                 CFArrayAppendValue(paths, keys[i]);
 861                         }
 862                 }
 863                 CFAllocatorDeallocate(NULL, keys);
 864                 CFAllocatorDeallocate(NULL, vals);
 865         }
 866
 867         n = CFArrayGetCount(paths);
 868         CFArraySortValues(paths,
 869                           CFRangeMake(0, n),
 870                           sort_paths,
 871                           NULL);
 872
 873         if (n > 0) {
 874                 for (i = 0; i < n; i++) {
 875                         SCPrint(TRUE,
 876                                 stdout,
 877                                 CFSTR("  path [%d] = %@/%@\n"),
 878                                 i,
 879                                 CFEqual(prefix, CFSTR("/")) ? CFSTR("") : prefix,
 880                                 CFArrayGetValueAtIndex(paths, i));
 881                 }
 882         } else {
 883                 SCPrint(TRUE, stdout, CFSTR("  no paths.\n"));
 884         }
 885
 886         CFRelease(paths);
 887
 888     done :
 889
 890         CFRelease(prefix);
 891         return;
 892 }
 893
 894
 895 __private_extern__
 896 void
 897 do_prefs_get(int argc, char **argv)
 898 {
 899 #pragma unused(argc)
 900         CFDictionaryRef         dict;
 901         CFStringRef             link;
 902         CFIndex                 n;
 903         CFMutableDictionaryRef  newDict;
 904         CFStringRef             path;
 905
 906         path = CFStringCreateWithCString(NULL, argv[0], kCFStringEncodingUTF8);
 907
 908         link = SCPreferencesPathGetLink(prefs, path);
 909         if (link != NULL) {
 910                 SCPrint(TRUE, stdout, CFSTR("  --> %@\n"), link);
 911         }
 912
 913         dict = SCPreferencesPathGetValue(prefs, path);
 914         CFRelease(path);
 915         if (dict == NULL) {
 916                 SCPrint(TRUE, stdout, CFSTR("  %s\n"), SCErrorString(SCError()));
 917                 return;
 918         }
 919
 920         newDict = CFDictionaryCreateMutable(NULL,
 921                                              0,
 922                                              &kCFTypeDictionaryKeyCallBacks,
 923                                              &kCFTypeDictionaryValueCallBacks);
 924
 925         // remove [path] children
 926         n = isA_CFDictionary(dict) ? CFDictionaryGetCount(dict) : 0;
 927         if (n > 0) {
 928                 CFIndex         i;
 929                 const void **   keys;
 930                 const void **   vals;
 931
 932                 keys = CFAllocatorAllocate(NULL, n * sizeof(CFStringRef), 0);
 933                 vals = CFAllocatorAllocate(NULL, n * sizeof(CFPropertyListRef), 0);
 934                 CFDictionaryGetKeysAndValues(dict, keys, vals);
 935                 for (i = 0; i < n; i++) {
 936                         if (!isA_CFDictionary(vals[i])) {
 937                                 CFDictionaryAddValue(newDict, keys[i], vals[i]);
 938                         }
 939                 }
 940                 CFAllocatorDeallocate(NULL, keys);
 941                 CFAllocatorDeallocate(NULL, vals);
 942         }
 943
 944         if (value != NULL) {
 945                 CFRelease(value);               /* we have new information, release the old */
 946         }
 947
 948         value = newDict;
 949
 950         return;
 951 }
 952
 953
 954 __private_extern__
 955 void
 956 do_prefs_set(int argc, char **argv)
 957 {
 958         CFDictionaryRef         dict;
 959         CFMutableDictionaryRef  newDict = NULL;
 960         CFStringRef             path;
 961
 962         path    = CFStringCreateWithCString(NULL, argv[0], kCFStringEncodingUTF8);
 963         newDict = CFDictionaryCreateMutableCopy(NULL, 0, value);
 964
 965         dict = SCPreferencesPathGetValue(prefs, path);
 966         if (dict != NULL) {
 967                 CFIndex n;
 968
 969                 // retain [path] children
 970                 n = CFDictionaryGetCount(dict);
 971                 if (n > 0) {
 972                         CFIndex         i;
 973                         const void **   keys;
 974                         const void **   vals;
 975
 976                         keys = CFAllocatorAllocate(NULL, n * sizeof(CFStringRef), 0);
 977                         vals = CFAllocatorAllocate(NULL, n * sizeof(CFPropertyListRef), 0);
 978                         CFDictionaryGetKeysAndValues(dict, keys, vals);
 979                         for (i = 0; i < n; i++) {
 980                                 if (isA_CFDictionary(vals[i])) {
 981                                         if (CFDictionaryContainsKey(newDict, keys[i])) {
 982                                                 SCPrint(TRUE, stdout, CFSTR("  key %@ is already a path component and cannot be replaced\n"), keys[i]);
 983                                                 goto done;
 984                                         }
 985                                         CFDictionaryAddValue(newDict, keys[i], vals[i]);
 986                                 }
 987                         }
 988                         CFAllocatorDeallocate(NULL, keys);
 989                         CFAllocatorDeallocate(NULL, vals);
 990                 }
 991         } else if (SCError() == kSCStatusInvalidArgument) {
 992                 SCPrint(TRUE, stdout, CFSTR("  a path component is not a dictionary\n"));
 993                 goto done;
 994         } else if (SCError() != kSCStatusNoKey) {
 995                 SCPrint(TRUE, stdout, CFSTR("  %s\n"), SCErrorString(SCError()));
 996                 goto done;
 997         }
 998
 999         if (argc > 1) {
1000                 CFStringRef     link;
1001                 Boolean         ok;
1002
1003                 // set link
1004                 link = CFStringCreateWithCString(NULL, argv[1], kCFStringEncodingUTF8);
1005                 ok = SCPreferencesPathSetLink(prefs, path, link);
1006                 CFRelease(link);
1007                 if (!ok) {
1008                         SCPrint(TRUE, stdout, CFSTR("  %s\n"), SCErrorString(SCError()));
1009                         goto done;
1010                 }
1011         } else {
1012                 // set value
1013                 if (!SCPreferencesPathSetValue(prefs, path, newDict)) {
1014                         SCPrint(TRUE, stdout, CFSTR("  %s\n"), SCErrorString(SCError()));
1015                         goto done;
1016                 }
1017         }
1018
1019         _prefs_changed = TRUE;
1020
1021     done :
1022
1023         CFRelease(newDict);
1024         CFRelease(path);
1025         return;
1026 }
1027
1028
1029 __private_extern__
1030 void
1031 do_prefs_remove(int argc, char **argv)
1032 {
1033 #pragma unused(argc)
1034         CFStringRef     path;
1035
1036         path = CFStringCreateWithCString(NULL, argv[0], kCFStringEncodingUTF8);
1037
1038         if (!SCPreferencesPathRemoveValue(prefs, path)) {
1039                 SCPrint(TRUE, stdout, CFSTR("  %s\n"), SCErrorString(SCError()));
1040                 goto done;
1041         }
1042
1043         _prefs_changed = TRUE;
1044
1045     done :
1046
1047         CFRelease(path);
1048         return;
1049 }
1050
1051 static const char *
1052 on_off_str(Boolean on)
1053 {
1054         return (on ? "on" : "off");
1055 }
1056
1057 /* -------------------- */
1058
1059 #if     !TARGET_OS_IPHONE
1060
1061 #include "InterfaceNamerControlPrefs.h"
1062
1063 static void
1064 allow_new_interfaces_usage(void)
1065 {
1066         fprintf(stderr, "usage: scutil --allow-new-interfaces [on|off|default]\n");
1067         return;
1068 }
1069
1070 __private_extern__
1071 void
1072 do_ifnamer(char * pref, int argc, char **argv)
1073 {
1074         Boolean allow   = FALSE;
1075
1076         if (argc > 1) {
1077                 allow_new_interfaces_usage();
1078                 exit(1);
1079         }
1080
1081         if (strcmp(pref, "allow-new-interfaces")) {
1082                 exit(0);
1083         }
1084
1085         if (argc == 0) {
1086                 SCPrint(TRUE, stdout, CFSTR("AllowNewInterfaces is %s\n"),
1087                         on_off_str(InterfaceNamerControlPrefsAllowNewInterfaces()));
1088                 exit(0);
1089         }
1090
1091         if        ((strcasecmp(argv[0], "disable") == 0) ||
1092                    (strcasecmp(argv[0], "no"     ) == 0) ||
1093                    (strcasecmp(argv[0], "off"    ) == 0) ||
1094                    (strcasecmp(argv[0], "0"      ) == 0)) {
1095                 allow = FALSE;
1096         } else if ((strcasecmp(argv[0], "enable") == 0) ||
1097                    (strcasecmp(argv[0], "yes"   ) == 0) ||
1098                    (strcasecmp(argv[0], "on"   ) == 0) ||
1099                    (strcasecmp(argv[0], "1"     ) == 0)) {
1100                 allow = TRUE;
1101         } else if (strcasecmp(argv[0], "default") == 0) {
1102                 allow = FALSE;
1103         } else {
1104                 allow_new_interfaces_usage();
1105                 exit(1);
1106         }
1107
1108         if (!InterfaceNamerControlPrefsSetAllowNewInterfaces(allow)) {
1109                 SCPrint(TRUE, stderr, CFSTR("failed to set preferences\n"));
1110                 exit(2);
1111         }
1112
1113         exit(0);
1114         return;
1115 }
1116
1117 #endif  // !TARGET_OS_IPHONE
1118
1119 /* -------------------- */
1120
1121 #include "IPMonitorControlPrefs.h"
1122
1123 __private_extern__
1124 void
1125 do_log(char * log, int argc, char **argv)
1126 {
1127         Boolean verbose = FALSE;
1128
1129         if (strcmp(log, "IPMonitor")) {
1130                 exit(0);
1131         }
1132
1133         if (argc == 0) {
1134                 SCPrint(TRUE, stdout, CFSTR("IPMonitor log is %s\n"),
1135                         on_off_str(IPMonitorControlPrefsIsVerbose()));
1136                 exit(0);
1137         }
1138
1139         if        ((strcasecmp(argv[0], "disable") == 0) ||
1140                    (strcasecmp(argv[0], "no"     ) == 0) ||
1141                    (strcasecmp(argv[0], "off"    ) == 0) ||
1142                    (strcasecmp(argv[0], "0"      ) == 0)) {
1143                 verbose = FALSE;
1144         } else if ((strcasecmp(argv[0], "enable") == 0) ||
1145                    (strcasecmp(argv[0], "yes"   ) == 0) ||
1146                    (strcasecmp(argv[0], "on"   ) == 0) ||
1147                    (strcasecmp(argv[0], "1"     ) == 0)) {
1148                 verbose = TRUE;
1149         } else {
1150                 SCPrint(TRUE, stdout, CFSTR("invalid value, must be 'on' or 'off'\n"));
1151                 exit(1);
1152         }
1153
1154         if (!IPMonitorControlPrefsSetVerbose(verbose)) {
1155                 SCPrint(TRUE, stderr, CFSTR("failed to set preferences\n"));
1156                 exit(2);
1157         }
1158
1159         exit(0);
1160         return;
1161 }
1162
1163
1164 /* -------------------- */
1165
1166 static SCNetworkInterfaceRef
1167 copy_configured_interface(SCPreferencesRef prefs, CFStringRef if_name)
1168 {
1169         SCNetworkSetRef         current_set = NULL;
1170         CFIndex                 count;
1171         CFIndex                 i;
1172         SCNetworkInterfaceRef   ret_if = NULL;
1173         CFArrayRef              services = NULL;
1174
1175         if (prefs == NULL) {
1176                 goto done;
1177         }
1178         current_set = SCNetworkSetCopyCurrent(prefs);
1179         if (current_set == NULL) {
1180                 goto done;
1181         }
1182         services = SCNetworkSetCopyServices(current_set);
1183         if (services == NULL) {
1184                 goto done;
1185         }
1186
1187         count = CFArrayGetCount(services);
1188         for (i = 0; i < count; i++) {
1189                 CFStringRef             this_if_name;
1190                 SCNetworkInterfaceRef   this_if;
1191                 SCNetworkServiceRef     s;
1192
1193                 s = (SCNetworkServiceRef)CFArrayGetValueAtIndex(services, i);
1194                 if (!SCNetworkServiceGetEnabled(s)) {
1195                         /* skip disabled services */
1196                         continue;
1197                 }
1198                 this_if = SCNetworkServiceGetInterface(s);
1199                 if (this_if == NULL) {
1200                         continue;
1201                 }
1202                 this_if_name = SCNetworkInterfaceGetBSDName(this_if);
1203                 if (this_if_name == NULL) {
1204                         continue;
1205                 }
1206                 if (CFEqual(this_if_name, if_name)) {
1207                         CFRetain(this_if);
1208                         ret_if = this_if;
1209                         break;
1210                 }
1211         }
1212
1213  done:
1214         if (current_set != NULL) {
1215                 CFRelease(current_set);
1216         }
1217         if (services != NULL) {
1218                 CFRelease(services);
1219         }
1220         return (ret_if);
1221 }
1222
1223 static void
1224 disable_until_needed_usage(void)
1225 {
1226         fprintf(stderr, "usage: scutil --disable-until-needed <interfaceName> [on|off|default]\n");
1227         return;
1228 }
1229
1230 #include <SystemConfiguration/SCNetworkConfigurationPrivate.h>
1231
1232 __private_extern__
1233 void
1234 do_disable_until_needed(int argc, char **argv)
1235 {
1236         const char *            if_name;
1237         CFStringRef             if_name_cf;
1238         SCNetworkInterfaceRef   net_if;
1239         Boolean                 on              = FALSE;
1240         const char *            on_off          = "?";
1241         Boolean                 ok;
1242         Boolean                 set_default     = FALSE;
1243         Boolean                 set_value       = FALSE;
1244
1245         if (argc < 1 || argc > 2) {
1246                 disable_until_needed_usage();
1247                 exit(1);
1248         }
1249         if_name = argv[0];
1250         if (argc > 1) {
1251                 on_off = argv[1];
1252                 if (strcasecmp(on_off, "on") == 0) {
1253                         on = TRUE;
1254                 } else if (strcasecmp(on_off, "off") == 0) {
1255                         on = FALSE;
1256                 } else if ((strcmp(on_off, "") == 0) || (strcasecmp(on_off, "default") == 0)) {
1257                         set_default = TRUE;
1258                         on_off = "default";
1259                 } else {
1260                         disable_until_needed_usage();
1261                         exit(1);
1262                 }
1263                 set_value = TRUE;
1264         }
1265         ok = _prefs_open(CFSTR("scutil --disable-until-needed"), NULL);
1266         if (!ok) {
1267                 SCPrint(TRUE,
1268                         stdout,
1269                         CFSTR("Could not open prefs: %s\n"),
1270                         SCErrorString(SCError()));
1271                 exit(1);
1272         }
1273         if_name_cf = CFStringCreateWithCStringNoCopy(NULL,
1274                                                      if_name,
1275                                                      kCFStringEncodingASCII,
1276                                                      kCFAllocatorNull);
1277         net_if = copy_configured_interface(prefs, if_name_cf);
1278         if (net_if == NULL) {
1279                 fprintf(stderr, "%s is not configured\n", if_name);
1280                 exit(1);
1281         }
1282         if (set_value) {
1283                 if (!set_default) {
1284                         ok = SCNetworkInterfaceSetDisableUntilNeeded(net_if, on);
1285                 } else {
1286                         ok = __SCNetworkInterfaceSetDisableUntilNeededValue(net_if, NULL);
1287                 }
1288                 if (!ok) {
1289                         fprintf(stderr, "failed to turn disable-until-needed %s\n",
1290                                 on_off);
1291                         exit(1);
1292                 }
1293                 _prefs_save();
1294         } else {
1295                 on = SCNetworkInterfaceGetDisableUntilNeeded(net_if);
1296                 printf("%s disable-until-needed is %s\n", if_name, on_off_str(on));
1297         }
1298         _prefs_close();
1299         exit(0);
1300         return;
1301 }