OSX/libsecurity_cdsa_utilities/lib/objectacl.cpp

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  23
  24
  25 //
  26 // objectacl - core implementation of an ACL-bearing object
  27 //
  28 #include <security_cdsa_utilities/objectacl.h>
  29 #include <security_cdsa_utilities/cssmbridge.h>
  30 #include <security_utilities/endian.h>
  31 #include <security_utilities/debugging.h>
  32 #include <algorithm>
  33 #include <cstdarg>
  34
  35 #include <security_cdsa_utilities/acl_preauth.h>        //@@@ impure - will be removed
  36
  37 using namespace DataWalkers;
  38
  39
  40 //
  41 // The static map of available ACL subject makers.
  42 // These are the kinds of ACL subjects we can deal with.
  43 //
  44 ModuleNexus<ObjectAcl::MakerMap> ObjectAcl::makers;
  45
  46
  47 //
  48 // Create an ObjectAcl
  49 //
  50 ObjectAcl::ObjectAcl(Allocator &alloc) : allocator(alloc), mNextHandle(1)
  51 {
  52 }
  53
  54 ObjectAcl::ObjectAcl(const AclEntryPrototype &proto, Allocator &alloc)
  55     : allocator(alloc), mNextHandle(1)
  56 {
  57     cssmSetInitial(proto);
  58 }
  59
  60 ObjectAcl::~ObjectAcl()
  61 { }
  62
  63
  64 //
  65 // Set an "initial ACL" from a CSSM-style initial ACL argument.
  66 // This will replace the owner, as well as replace the entire ACL
  67 // with a single-item slot, as per CSSM specification.
  68 //
  69 void ObjectAcl::cssmSetInitial(const AclEntryPrototype &proto)
  70 {
  71     mOwner = OwnerEntry(proto);
  72         add(proto.s_tag(), proto);
  73         IFDUMPING("acl", debugDump("create/proto"));
  74 }
  75
  76 void ObjectAcl::cssmSetInitial(const AclSubjectPointer &subject)
  77 {
  78     mOwner = OwnerEntry(subject);
  79         add("", subject);
  80         IFDUMPING("acl", debugDump("create/subject"));
  81 }
  82
  83 ObjectAcl::Entry::~Entry()
  84 {
  85 }
  86
  87
  88 //
  89 // ObjectAcl::validate validates an access authorization claim.
  90 // Returns normally if 'auth' is granted to the bearer of 'cred'.
  91 // Otherwise, throws a suitable (ACL-related) CssmError exception.
  92 //
  93 bool ObjectAcl::validates(AclAuthorization auth, const AccessCredentials *cred,
  94     AclValidationEnvironment *env)
  95 {
  96         BaseValidationContext ctx(cred, auth, env);
  97         return validates(ctx);
  98 }
  99
 100 bool ObjectAcl::validates(AclValidationContext &ctx)
 101 {
 102         // make sure we are ready to go
 103         instantiateAcl();
 104
 105         IFDUMPING("acleval", Debug::dump("<<WANT(%d)<", ctx.authorization()));
 106
 107     //@@@ should pre-screen based on requested auth, maybe?
 108
 109 #if defined(ACL_OMNIPOTENT_OWNER)
 110     // try owner (owner can do anything)
 111     if (mOwner.validates(ctx))
 112         return;
 113 #endif //ACL_OMNIPOTENT_OWNER
 114
 115     // try applicable ACLs
 116     pair<EntryMap::const_iterator, EntryMap::const_iterator> range;
 117     if (getRange(ctx.s_credTag(), range) == 0) {
 118         // no such tag
 119         secinfo("SecAccess", "no tag for cred tag: \"%s\"", ctx.s_credTag().c_str());
 120         CssmError::throwMe(CSSM_ERRCODE_ACL_ENTRY_TAG_NOT_FOUND);
 121     }
 122     // try each entry in turn
 123     for (EntryMap::const_iterator it = range.first; it != range.second; it++) {
 124         const AclEntry &slot = it->second;
 125                 IFDUMPING("acleval", (Debug::dump(" EVAL["), slot.debugDump(), Debug::dump("]")));
 126         if (slot.authorizes(ctx.authorization())) {
 127                         ctx.init(this, slot.subject);
 128                         ctx.entryTag(slot.tag);
 129                         if (slot.validates(ctx)) {
 130                                 IFDUMPING("acleval", Debug::dump(">PASS>>\n"));
 131                                 return true;            // passed
 132                         }
 133                         IFDUMPING("acleval", Debug::dump(" NO"));
 134                 }
 135     }
 136         IFDUMPING("acleval", Debug::dump(">FAIL>>\n"));
 137         return false;   // no joy
 138 }
 139
 140 void ObjectAcl::validate(AclAuthorization auth, const AccessCredentials *cred,
 141         AclValidationEnvironment *env)
 142 {
 143         if (!validates(auth, cred, env))
 144                 CssmError::throwMe(CSSM_ERRCODE_OPERATION_AUTH_DENIED);
 145 }
 146
 147 void ObjectAcl::validate(AclValidationContext &ctx)
 148 {
 149         if (!validates(ctx))
 150                 CssmError::throwMe(CSSM_ERRCODE_OPERATION_AUTH_DENIED);
 151 }
 152
 153
 154 void ObjectAcl::validateOwner(AclAuthorization authorizationHint,
 155         const AccessCredentials *cred, AclValidationEnvironment *env)
 156 {
 157     BaseValidationContext ctx(cred, authorizationHint, env);
 158         validateOwner(ctx);
 159 }
 160
 161 void ObjectAcl::validateOwner(AclValidationContext &ctx)
 162 {
 163     instantiateAcl();
 164
 165     ctx.init(this, mOwner.subject);
 166     if (mOwner.validates(ctx))
 167         return;
 168     CssmError::throwMe(CSSM_ERRCODE_OPERATION_AUTH_DENIED);
 169 }
 170
 171
 172 //
 173 // Export an ObjectAcl to two memory blobs: public and private data separated.
 174 // This is a standard two-pass size+copy operation.
 175 //
 176 void ObjectAcl::exportBlob(CssmData &publicBlob, CssmData &privateBlob)
 177 {
 178         instantiateAcl();
 179     Writer::Counter pubSize, privSize;
 180         Endian<uint32> entryCount = (uint32)mEntries.size();
 181     mOwner.exportBlob(pubSize, privSize);
 182         pubSize(entryCount);
 183     for (EntryMap::iterator it = begin(); it != end(); it++)
 184         it->second.exportBlob(pubSize, privSize);
 185     publicBlob = CssmData(allocator.malloc(pubSize), pubSize);
 186     privateBlob = CssmData(allocator.malloc(privSize), privSize);
 187     Writer pubWriter(publicBlob), privWriter(privateBlob);
 188     mOwner.exportBlob(pubWriter, privWriter);
 189         pubWriter(entryCount);
 190     for (EntryMap::iterator it = begin(); it != end(); it++)
 191         it->second.exportBlob(pubWriter, privWriter);
 192         IFDUMPING("acl", debugDump("exported"));
 193 }
 194
 195
 196 //
 197 // Import an ObjectAcl's contents from two memory blobs representing public and
 198 // private contents, respectively. These blobs must have been generated by the
 199 // export method.
 200 // Prior contents (if any) are deleted and replaced.
 201 //
 202 void ObjectAcl::importBlob(const void *publicBlob, const void *privateBlob)
 203 {
 204     Reader pubReader(publicBlob), privReader(privateBlob);
 205     mOwner.importBlob(pubReader, privReader);
 206         Endian<uint32> entryCountIn; pubReader(entryCountIn);
 207         uint32 entryCount = entryCountIn;
 208
 209         mEntries.erase(begin(), end());
 210         for (uint32 n = 0; n < entryCount; n++) {
 211                 AclEntry newEntry;
 212                 newEntry.importBlob(pubReader, privReader);
 213                 add(newEntry.tag, newEntry);
 214         }
 215         IFDUMPING("acl", debugDump("imported"));
 216 }
 217
 218
 219 //
 220 // Import/export helpers for subjects.
 221 // This is exported to (subject implementation) callers to maintain consistency
 222 // in binary format handling.
 223 //
 224 AclSubject *ObjectAcl::importSubject(Reader &pub, Reader &priv)
 225 {
 226     Endian<uint32> typeAndVersion; pub(typeAndVersion);
 227         return make(typeAndVersion, pub, priv);
 228 }
 229
 230
 231 //
 232 // Setup/update hooks
 233 //
 234 void ObjectAcl::instantiateAcl()
 235 {
 236         // nothing by default
 237 }
 238
 239 void ObjectAcl::changedAcl()
 240 {
 241         // nothing by default
 242 }
 243
 244
 245 //
 246 // ACL utility methods
 247 //
 248 unsigned int ObjectAcl::getRange(const std::string &tag,
 249         pair<EntryMap::const_iterator, EntryMap::const_iterator> &range, bool tolerant /* = false */) const
 250 {
 251     if (!tag.empty()) { // tag restriction in effect
 252         secinfo("SecAccess", "looking for ACL entries matching tag: \"%s\"", tag.c_str());
 253         range = mEntries.equal_range(tag);
 254         unsigned int count = (unsigned int)mEntries.count(tag);
 255         if (count == 0 && !tolerant)
 256             CssmError::throwMe(CSSM_ERRCODE_ACL_ENTRY_TAG_NOT_FOUND);
 257         return count;
 258     } else {                            // try all tags
 259         secinfo("SecAccess", "no tag given; looking for all ACL entries");
 260         range.first = mEntries.begin();
 261         range.second = mEntries.end();
 262         return (unsigned int)mEntries.size();
 263     }
 264 }
 265
 266 ObjectAcl::EntryMap::iterator ObjectAcl::findEntryHandle(CSSM_ACL_HANDLE handle)
 267 {
 268     for (EntryMap::iterator it = mEntries.begin(); it != mEntries.end(); it++)
 269         if (it->second.handle == handle)
 270             return it;
 271     CssmError::throwMe(CSSMERR_CSSM_INVALID_HANDLE_USAGE);      //%%% imprecise error code
 272 }
 273
 274
 275 //
 276 // CSSM style ACL access and modification functions.
 277 //
 278 void ObjectAcl::cssmGetAcl(const char *tag, uint32 &count, AclEntryInfo * &acls)
 279 {
 280         instantiateAcl();
 281     pair<EntryMap::const_iterator, EntryMap::const_iterator> range;
 282     count = getRange(tag ? tag : "", range);
 283     acls = allocator.alloc<AclEntryInfo>(count);
 284     uint32 n = 0;
 285
 286     secinfo("SecAccess", "getting the ACL for %p (%d entries) tag: %s", this, count, tag ? tag : "<none>");
 287
 288     for (EntryMap::const_iterator it = range.first; it != range.second; it++, n++) {
 289         acls[n].EntryHandle = it->second.handle;
 290         it->second.toEntryInfo(acls[n].EntryPublicInfo, allocator);
 291         secinfo("SecAccess", "found an entry of type %d", acls[n].EntryPublicInfo.TypedSubject.Head->WordID);
 292     }
 293     count = n;
 294 }
 295
 296 void ObjectAcl::cssmChangeAcl(const AclEdit &edit,
 297         const AccessCredentials *cred, AclValidationEnvironment *env, const char *preserveTag)
 298 {
 299         IFDUMPING("acl", debugDump("acl-change-from"));
 300
 301         // make sure we're ready to go
 302         instantiateAcl();
 303
 304     // validate access credentials
 305     validateOwner(CSSM_ACL_AUTHORIZATION_CHANGE_ACL, cred, env);
 306
 307     // what is Thy wish, effendi?
 308     switch (edit.EditMode) {
 309     case CSSM_ACL_EDIT_MODE_ADD: {
 310         secinfo("SecAccess", "adding ACL for %p (%ld) while preserving: %s", this, edit.handle(), preserveTag);
 311                 const AclEntryInput &input = Required(edit.newEntry());
 312                 if (preserveTag && input.proto().s_tag() == preserveTag)
 313                         MacOSError::throwMe(CSSM_ERRCODE_OPERATION_AUTH_DENIED);
 314                 add(input.proto().s_tag(), input.proto());
 315         secinfo("SecAccess", "subject type is %d", input.proto().TypedSubject.Head->WordID);
 316                 }
 317         break;
 318     case CSSM_ACL_EDIT_MODE_REPLACE: {
 319         secinfo("SecAccess", "replacing ACL for %p (%ld to %p) while preserving: %s", this, edit.handle(), edit.newEntry(), preserveTag);
 320                 // keep the handle, and try for some modicum of atomicity
 321         EntryMap::iterator it = findEntryHandle(edit.handle());
 322                 if (preserveTag && it->second.tag == preserveTag)
 323                         MacOSError::throwMe(CSSM_ERRCODE_OPERATION_AUTH_DENIED);
 324         AclEntryPrototype proto2;
 325         it->second.toEntryInfo(proto2, allocator);
 326         secinfo("SecAccess", "subject type was %d", proto2.TypedSubject.Head->WordID);
 327         DataWalkers::chunkFree(proto2, allocator);
 328
 329                 AclEntryPrototype proto = Required(edit.newEntry()).proto(); // (bypassing callbacks)
 330                 add(proto.s_tag(), proto, edit.handle());
 331         secinfo("SecAccess", "new subject type is %d", proto.TypedSubject.Head->WordID);
 332                 mEntries.erase(it);
 333         }
 334         break;
 335         case CSSM_ACL_EDIT_MODE_DELETE: {
 336         secinfo("SecAccess", "deleting ACL for %p (%ld) while preserving: %s", this, edit.handle(), preserveTag);
 337                 EntryMap::iterator it = findEntryHandle(edit.handle());
 338                 if (preserveTag && it->second.tag == preserveTag)
 339                         MacOSError::throwMe(CSSM_ERRCODE_OPERATION_AUTH_DENIED);
 340
 341         AclEntryPrototype proto;
 342         it->second.toEntryInfo(proto, allocator);
 343         secinfo("SecAccess", "subject type was %d", proto.TypedSubject.Head->WordID);
 344         DataWalkers::chunkFree(proto, allocator);
 345
 346         mEntries.erase(it);
 347         break;
 348                 }
 349     default:
 350         secinfo("SecAccess", "no idea what this CSSM_ACL_EDIT type is: %d", edit.EditMode);
 351         CssmError::throwMe(CSSM_ERRCODE_INVALID_ACL_EDIT_MODE);
 352     }
 353
 354         // notify change
 355         changedAcl();
 356
 357         IFDUMPING("acl", debugDump("acl-change-to"));
 358 }
 359
 360 void ObjectAcl::cssmGetOwner(AclOwnerPrototype &outOwner)
 361 {
 362         instantiateAcl();
 363     outOwner.TypedSubject = mOwner.subject->toList(allocator);
 364     outOwner.Delegate = mOwner.delegate;
 365
 366     secinfo("SecAccess", "%p: getting the owner ACL: type %d", this, outOwner.TypedSubject.Head->WordID);
 367 }
 368
 369 void ObjectAcl::cssmChangeOwner(const AclOwnerPrototype &newOwner,
 370                                 const AccessCredentials *cred, AclValidationEnvironment *env)
 371 {
 372         IFDUMPING("acl", debugDump("owner-change-from"));
 373
 374         instantiateAcl();
 375
 376     // only the owner entry can match
 377     validateOwner(CSSM_ACL_AUTHORIZATION_CHANGE_OWNER, cred, env);
 378
 379     // okay, replace it
 380     mOwner = newOwner;
 381
 382     secinfo("SecAccess", "%p: new owner's type is %d", this, newOwner.subject().Head->WordID);
 383
 384         changedAcl();
 385
 386         IFDUMPING("acl", debugDump("owner-change-to"));
 387 }
 388
 389
 390 //
 391 // Load a set of ACL entries from an AclEntryInfo array.
 392 // This completely replaces the ACL's entries.
 393 // Note that we will adopt the handles in the infos, so they better be proper
 394 // (unique, nonzero).
 395 //
 396 template <class Input>
 397 void ObjectAcl::owner(const Input &input)
 398 {
 399         IFDUMPING("acl", debugDump("owner-load-old"));
 400         mOwner = OwnerEntry(input);
 401         IFDUMPING("acl", debugDump("owner-load-new"));
 402 }
 403
 404 template void ObjectAcl::owner(const AclOwnerPrototype &);
 405 template void ObjectAcl::owner(const AclSubjectPointer &);
 406
 407
 408 void ObjectAcl::entries(uint32 count, const AclEntryInfo *info)
 409 {
 410         IFDUMPING("acl", debugDump("entries-load-old"));
 411         mEntries.erase(mEntries.begin(), mEntries.end());
 412         for (uint32 n = 0; n < count; n++, info++)
 413                 add(info->proto().s_tag(), info->proto());
 414         IFDUMPING("acl", debugDump("entries-load-new"));
 415 }
 416
 417
 418 //
 419 // Clear out the ACL and return it to un-initialized state
 420 //
 421 void ObjectAcl::clear()
 422 {
 423         mOwner = OwnerEntry();
 424         mEntries.erase(mEntries.begin(), mEntries.end());
 425         secinfo("acl", "%p cleared", this);
 426 }
 427
 428
 429 //
 430 // Common gate to add an ACL entry
 431 //
 432 void ObjectAcl::add(const std::string &tag, const AclEntry &newEntry)
 433 {
 434         add(tag, newEntry, mNextHandle++);
 435 }
 436
 437 void ObjectAcl::add(const std::string &tag, AclEntry newEntry, CSSM_ACL_HANDLE handle)
 438 {
 439         newEntry.tag = tag;
 440         //@@@ This should use a hook-registry mechanism. But for now, we are explicit:
 441         if (!newEntry.authorizesAnything) {
 442                 for (AclAuthorizationSet::const_iterator it = newEntry.authorizations.begin();
 443                                 it != newEntry.authorizations.end(); it++)
 444                         if (*it >= CSSM_ACL_AUTHORIZATION_PREAUTH_BASE &&
 445                                         *it < CSSM_ACL_AUTHORIZATION_PREAUTH_END) {
 446                                 // preauthorization right - special handling
 447                                 if (newEntry.subject->type() != CSSM_ACL_SUBJECT_TYPE_PREAUTH_SOURCE)
 448                                         newEntry.subject =
 449                                                 new PreAuthorizationAcls::SourceAclSubject(newEntry.subject);
 450                         }
 451         }
 452
 453         mEntries.insert(make_pair(tag, newEntry))->second.handle = handle;
 454         if (handle >= mNextHandle)
 455                 mNextHandle = handle + 1;       // don't reuse this handle (in this ACL)
 456 }
 457
 458
 459 //
 460 // Common features of ACL entries/owners
 461 //
 462 void ObjectAcl::Entry::init(const AclSubjectPointer &subject, bool delegate)
 463 {
 464     this->subject = subject;
 465     this->delegate = delegate;
 466 }
 467
 468 void ObjectAcl::Entry::importBlob(Reader &pub, Reader &priv)
 469 {
 470         // the delegation flag is 4 bytes for historic reasons
 471     Endian<uint32> del;
 472         pub(del);
 473         delegate = del;
 474
 475         subject = importSubject(pub, priv);
 476 }
 477
 478
 479 //
 480 // An OwnerEntry is a restricted EntryPrototype for use as the ACL owner.
 481 //
 482 bool ObjectAcl::OwnerEntry::authorizes(AclAuthorization) const
 483 {
 484     return true;        // owner can do anything
 485 }
 486
 487 bool ObjectAcl::OwnerEntry::validates(const AclValidationContext &ctx) const
 488 {
 489         if (AclValidationEnvironment* env = ctx.environment())
 490                 if (env->forceSuccess)
 491                         return true;
 492     return subject->validates(ctx);             // simple subject match - no strings attached
 493 }
 494
 495
 496 //
 497 // An AclEntry has some extra goodies
 498 //
 499 ObjectAcl::AclEntry::AclEntry(const AclEntryPrototype &proto) : Entry(proto)
 500 {
 501     tag = proto.s_tag();
 502     if (proto.authorization().contains(CSSM_ACL_AUTHORIZATION_ANY))
 503         authorizesAnything = true;      // anything else wouldn't add anything
 504     else if (proto.authorization().empty())
 505         authorizesAnything = true;      // not in standard, but common sense
 506     else {
 507         authorizesAnything = false;
 508         authorizations = proto.authorization();
 509     }
 510     //@@@ not setting time range
 511     // handle = not set here. Set by caller when the AclEntry is created.
 512 }
 513
 514 ObjectAcl::AclEntry::AclEntry(const AclSubjectPointer &subject) : Entry(subject)
 515 {
 516     authorizesAnything = true;  // by default, everything
 517     //@@@ not setting time range
 518 }
 519
 520 void ObjectAcl::AclEntry::toEntryInfo(CSSM_ACL_ENTRY_PROTOTYPE &info, Allocator &alloc) const
 521 {
 522     info.TypedSubject = subject->toList(alloc);
 523     info.Delegate = delegate;
 524         info.Authorization = authorizesAnything ?
 525                 AuthorizationGroup(CSSM_ACL_AUTHORIZATION_ANY, alloc) :
 526                 AuthorizationGroup(authorizations, alloc);
 527     //@@@ info.TimeRange =
 528     assert(tag.length() <= CSSM_MODULE_STRING_SIZE);
 529     memcpy(info.EntryTag, tag.c_str(), tag.length() + 1);
 530 }
 531
 532 bool ObjectAcl::AclEntry::authorizes(AclAuthorization auth) const
 533 {
 534     return authorizesAnything || authorizations.find(auth) != authorizations.end();
 535 }
 536
 537 bool ObjectAcl::AclEntry::validates(const AclValidationContext &ctx) const
 538 {
 539     //@@@ not checking time ranges
 540     return subject->validates(ctx);
 541 }
 542
 543 void ObjectAcl::AclEntry::addAuthorization(AclAuthorization auth)
 544 {
 545         authorizations.insert(auth);
 546         authorizesAnything = false;
 547 }
 548
 549
 550 void ObjectAcl::AclEntry::importBlob(Reader &pub, Reader &priv)
 551 {
 552     Entry::importBlob(pub, priv);
 553     const char *s; pub(s); tag = s;
 554
 555         // authorizesAnything is on disk as a 4-byte flag
 556     Endian<uint32> tmpAuthorizesAnything;
 557     pub(tmpAuthorizesAnything);
 558     authorizesAnything = tmpAuthorizesAnything;
 559
 560     authorizations.erase(authorizations.begin(), authorizations.end());
 561     if (!authorizesAnything) {
 562         Endian<uint32> countIn; pub(countIn);
 563                 uint32 count = countIn;
 564
 565         for (uint32 n = 0; n < count; n++) {
 566             Endian<AclAuthorization> auth; pub(auth);
 567             authorizations.insert(auth);
 568         }
 569     }
 570     //@@@ import time range
 571 }
 572
 573
 574 //
 575 // Subject factory and makers
 576 //
 577 AclSubject::Maker::Maker(CSSM_ACL_SUBJECT_TYPE type)
 578         : mType(type)
 579 {
 580     ObjectAcl::makers()[type] = this;
 581 }
 582
 583 AclSubject *ObjectAcl::make(const TypedList &list)
 584 {
 585     if (!list.isProper())
 586         CssmError::throwMe(CSSM_ERRCODE_INVALID_ACL_SUBJECT_VALUE);
 587     return makerFor(list.type()).make(list);
 588 }
 589
 590 AclSubject *ObjectAcl::make(uint32 typeAndVersion, Reader &pub, Reader &priv)
 591 {
 592         // this type is encoded as (version << 24) | type
 593     return makerFor(typeAndVersion & ~AclSubject::versionMask).make(typeAndVersion >> AclSubject::versionShift, pub, priv);
 594 }
 595
 596 AclSubject::Maker &ObjectAcl::makerFor(CSSM_ACL_SUBJECT_TYPE type)
 597 {
 598     AclSubject::Maker *maker = makers()[type];
 599     if (maker == NULL)
 600         CssmError::throwMe(CSSM_ERRCODE_ACL_SUBJECT_TYPE_NOT_SUPPORTED);
 601     return *maker;
 602 }
 603
 604
 605 //
 606 // Parsing helper for subject makers.
 607 // Note that count/array exclude the first element of list, which is the subject type wordid.
 608 //
 609 void AclSubject::Maker::crack(const CssmList &list, uint32 count, ListElement **array, ...)
 610 {
 611     if (count != list.length() - 1)
 612         CssmError::throwMe(CSSM_ERRCODE_INVALID_ACL_SUBJECT_VALUE);
 613     if (count > 0) {
 614         va_list args;
 615         va_start(args, array);
 616         ListElement *elem = list.first()->next();
 617         for (uint32 n = 0; n < count; n++, elem = elem->next()) {
 618             CSSM_LIST_ELEMENT_TYPE expectedType = va_arg(args, CSSM_LIST_ELEMENT_TYPE);
 619             if (elem->type() != expectedType)
 620                 CssmError::throwMe(CSSM_ERRCODE_INVALID_ACL_SUBJECT_VALUE);
 621             array[n] = elem;
 622         }
 623         va_end(args);
 624     }
 625 }
 626
 627 CSSM_WORDID_TYPE AclSubject::Maker::getWord(const ListElement &elem,
 628     int min /*= 0*/, int max /*= INT_MAX*/)
 629 {
 630     if (elem.type() != CSSM_LIST_ELEMENT_WORDID)
 631         CssmError::throwMe(CSSM_ERRCODE_INVALID_ACL_SUBJECT_VALUE);
 632     CSSM_WORDID_TYPE value = elem;
 633     if (value < min || value > max)
 634         CssmError::throwMe(CSSM_ERRCODE_INVALID_ACL_SUBJECT_VALUE);
 635     return value;
 636 }
 637
 638
 639 //
 640 // Debug dumping support.
 641 // Leave the ObjectAcl::debugDump method in (stubbed out)
 642 // to keep the virtual table layout stable, and to allow
 643 // proper linking in weird mix-and-match scenarios.
 644 //
 645 void ObjectAcl::debugDump(const char *what) const
 646 {
 647 #if defined(DEBUGDUMP)
 648         if (!what)
 649                 what = "Dump";
 650         Debug::dump("%p ACL %s: %d entries\n", this, what, int(mEntries.size()));
 651         Debug::dump(" OWNER ["); mOwner.debugDump(); Debug::dump("]\n");
 652         for (EntryMap::const_iterator it = begin(); it != end(); it++) {
 653                 const AclEntry &ent = it->second;
 654                 Debug::dump(" (%ld:%s) [", ent.handle, ent.tag.c_str());
 655                 ent.debugDump();
 656                 Debug::dump("]\n");
 657         }
 658         Debug::dump("%p ACL END\n", this);
 659 #endif //DEBUGDUMP
 660 }
 661
 662 #if defined(DEBUGDUMP)
 663
 664 void ObjectAcl::Entry::debugDump() const
 665 {
 666         if (subject) {
 667                 if (AclSubject::Version v = subject->version())
 668                         Debug::dump("V=%d ", v);
 669                 subject->debugDump();
 670         } else {
 671                 Debug::dump("NULL subject");
 672         }
 673         if (delegate)
 674                 Debug::dump(" DELEGATE");
 675 }
 676
 677 void ObjectAcl::AclEntry::debugDump() const
 678 {
 679         Entry::debugDump();
 680         if (authorizesAnything) {
 681                 Debug::dump(" auth(ALL)");
 682         } else {
 683                 Debug::dump(" auth(");
 684                 for (AclAuthorizationSet::iterator it = authorizations.begin();
 685                                 it != authorizations.end(); it++) {
 686                         if (*it >= CSSM_ACL_AUTHORIZATION_PREAUTH_BASE
 687                                         && *it < CSSM_ACL_AUTHORIZATION_PREAUTH_END)
 688                                 Debug::dump(" PRE(%d)", *it - CSSM_ACL_AUTHORIZATION_PREAUTH_BASE);
 689                         else
 690                                 Debug::dump(" %d", *it);
 691                 }
 692                 Debug::dump(")");
 693         }
 694 }
 695
 696 #endif //DEBUGDUMP