SystemConfiguration.fproj/SCDPrivate.c

   1 /*
   2  * Copyright (c) 2000-2017 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  * June 1, 2001                 Allan Nathanson <ajn@apple.com>
  28  * - public API conversion
  29  *
  30  * November 9, 2000             Allan Nathanson <ajn@apple.com>
  31  * - initial revision
  32  */
  33
  34 //#define DO_NOT_CRASH
  35 //#define DO_NOT_INFORM
  36
  37 #define SC_LOG_HANDLE   _SC_LOG_DEFAULT()
  38 #include <SystemConfiguration/SystemConfiguration.h>
  39 #include <SystemConfiguration/SCValidation.h>
  40 #include <SystemConfiguration/SCPrivate.h>
  41
  42 #include <sys/param.h>
  43 #include <sys/types.h>
  44 #include <sys/socket.h>
  45 #include <sys/ioctl.h>
  46 #include <net/if.h>
  47 #include <net/if_dl.h>
  48 #include <netinet/in.h>
  49 #include <arpa/inet.h>
  50
  51 #include <dispatch/dispatch.h>
  52
  53 #include <mach/mach.h>
  54 #include <mach/notify.h>
  55 #include <mach/mach_error.h>
  56 #include <pthread.h>
  57
  58 #include <execinfo.h>
  59 #include <unistd.h>
  60 #include <dlfcn.h>
  61
  62
  63 #if     TARGET_OS_EMBEDDED && !defined(DO_NOT_INFORM)
  64 #include <CoreFoundation/CFUserNotification.h>
  65 #endif  // TARGET_OS_EMBEDDED && !defined(DO_NOT_INFORM)
  66
  67 #define N_QUICK 32
  68
  69
  70 #pragma mark -
  71 #pragma mark Miscellaneous
  72
  73
  74 __private_extern__ char *
  75 _SC_cfstring_to_cstring_ext(CFStringRef cfstr, char *buf, CFIndex bufLen, CFStringEncoding encoding, UInt8 lossByte, CFIndex *usedBufLen)
  76 {
  77         CFIndex converted;
  78         CFIndex last    = 0;
  79         CFIndex len;
  80
  81         if (cfstr == NULL) {
  82                 cfstr = CFSTR("");
  83         }
  84         len = CFStringGetLength(cfstr);
  85
  86         /* how much buffer space will we really need? */
  87         converted = CFStringGetBytes(cfstr,
  88                                      CFRangeMake(0, len),
  89                                      encoding,
  90                                      lossByte,
  91                                      FALSE,
  92                                      NULL,
  93                                      0,
  94                                      &last);
  95         if (converted < len) {
  96                 /* if full string could not be converted */
  97                 if (buf != NULL) {
  98                         buf[0] = '\0';
  99                 }
 100                 return NULL;
 101         }
 102
 103         if (buf != NULL) {
 104                 if (bufLen < (last + 1)) {
 105                         /* if the size of the provided buffer is too small */
 106                         buf[0] = '\0';
 107                         return NULL;
 108                 }
 109         } else {
 110                 /* allocate a buffer */
 111                 bufLen = last + 1;
 112                 buf = CFAllocatorAllocate(NULL, bufLen, 0);
 113                 if (buf == NULL) {
 114                         return NULL;
 115                 }
 116         }
 117
 118         (void)CFStringGetBytes(cfstr,
 119                                CFRangeMake(0, len),
 120                                encoding,
 121                                lossByte,
 122                                FALSE,
 123                                (UInt8 *)buf,
 124                                bufLen,
 125                                &last);
 126         buf[last] = '\0';
 127
 128         if (usedBufLen != NULL) {
 129                 *usedBufLen = last;
 130         }
 131
 132         return buf;
 133 }
 134
 135
 136 char *
 137 _SC_cfstring_to_cstring(CFStringRef cfstr, char *buf, CFIndex bufLen, CFStringEncoding encoding)
 138 {
 139         return _SC_cfstring_to_cstring_ext(cfstr, buf, bufLen, encoding, 0, NULL);
 140
 141 }
 142
 143
 144 void
 145 _SC_sockaddr_to_string(const struct sockaddr *address, char *buf, size_t bufLen)
 146 {
 147         union {
 148                 const struct sockaddr           *sa;
 149                 const struct sockaddr_in        *sin;
 150                 const struct sockaddr_in6       *sin6;
 151                 const struct sockaddr_dl        *sdl;
 152         } addr;
 153
 154         addr.sa = address;
 155
 156         bzero(buf, bufLen);
 157         switch (address->sa_family) {
 158                 case AF_INET :
 159                         (void)inet_ntop(addr.sin->sin_family,
 160                                         &addr.sin->sin_addr,
 161                                         buf,
 162                                         (socklen_t)bufLen);
 163                         break;
 164                 case AF_INET6 : {
 165                         (void)inet_ntop(addr.sin6->sin6_family,
 166                                         &addr.sin6->sin6_addr,
 167                                         buf,
 168                                         (socklen_t)bufLen);
 169                         if (addr.sin6->sin6_scope_id != 0) {
 170                                 size_t  n;
 171
 172                                 n = strlen(buf);
 173                                 if ((n+IF_NAMESIZE+1) <= bufLen) {
 174                                         buf[n++] = '%';
 175                                         if_indextoname(addr.sin6->sin6_scope_id, &buf[n]);
 176                                 }
 177                         }
 178                         break;
 179                 }
 180                 default :
 181                         snprintf(buf, bufLen, "unexpected address family %d", address->sa_family);
 182                         break;
 183         }
 184
 185         return;
 186 }
 187
 188
 189 struct sockaddr *
 190 _SC_string_to_sockaddr(const char *str, sa_family_t af, void *buf, size_t bufLen)
 191 {
 192         union {
 193                 void                    *buf;
 194                 struct sockaddr         *sa;
 195                 struct sockaddr_in      *sin;
 196                 struct sockaddr_in6     *sin6;
 197         } addr;
 198
 199         if (buf == NULL) {
 200                 bufLen = sizeof(struct sockaddr_storage);
 201                 addr.buf = CFAllocatorAllocate(NULL, bufLen, 0);
 202         } else {
 203                 addr.buf = buf;
 204         }
 205
 206         bzero(addr.buf, bufLen);
 207         if (((af == AF_UNSPEC) || (af == AF_INET)) &&
 208             (bufLen >= sizeof(struct sockaddr_in)) &&
 209             inet_aton(str, &addr.sin->sin_addr) == 1) {
 210                 // if IPv4 address
 211                 addr.sin->sin_len    = sizeof(struct sockaddr_in);
 212                 addr.sin->sin_family = AF_INET;
 213         } else if (((af == AF_UNSPEC) || (af == AF_INET6)) &&
 214                    (bufLen >= sizeof(struct sockaddr_in6)) &&
 215                    inet_pton(AF_INET6, str, &addr.sin6->sin6_addr) == 1) {
 216                 // if IPv6 address
 217                 char    *p;
 218
 219                 addr.sin6->sin6_len    = sizeof(struct sockaddr_in6);
 220                 addr.sin6->sin6_family = AF_INET6;
 221
 222                 p = strchr(str, '%');
 223                 if (p != NULL) {
 224                         addr.sin6->sin6_scope_id = if_nametoindex(p + 1);
 225                 }
 226
 227                 if (IN6_IS_ADDR_LINKLOCAL(&addr.sin6->sin6_addr) ||
 228                     IN6_IS_ADDR_MC_LINKLOCAL(&addr.sin6->sin6_addr)) {
 229                         uint16_t        if_index;
 230
 231                         if_index = ntohs(addr.sin6->sin6_addr.__u6_addr.__u6_addr16[1]);
 232                         addr.sin6->sin6_addr.__u6_addr.__u6_addr16[1] = 0;
 233                         if (addr.sin6->sin6_scope_id == 0) {
 234                                 // use the scope id that was embedded in the [link local] IPv6 address
 235                                 addr.sin6->sin6_scope_id = if_index;
 236                         }
 237                 }
 238         } else {
 239                 if (addr.buf != buf) {
 240                         CFAllocatorDeallocate(NULL, addr.buf);
 241                 }
 242                 addr.buf = NULL;
 243         }
 244
 245         return addr.sa;
 246 }
 247
 248
 249 void
 250 _SC_sendMachMessage(mach_port_t port, mach_msg_id_t msg_id)
 251 {
 252         mach_msg_empty_send_t   msg;
 253         mach_msg_option_t       options;
 254         kern_return_t           status;
 255
 256         msg.header.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, 0);
 257         msg.header.msgh_size = sizeof(msg);
 258         msg.header.msgh_remote_port = port;
 259         msg.header.msgh_local_port = MACH_PORT_NULL;
 260         msg.header.msgh_id = msg_id;
 261         options = MACH_SEND_TIMEOUT;
 262         status = mach_msg(&msg.header,                  /* msg */
 263                           MACH_SEND_MSG|options,        /* options */
 264                           msg.header.msgh_size,         /* send_size */
 265                           0,                            /* rcv_size */
 266                           MACH_PORT_NULL,               /* rcv_name */
 267                           0,                            /* timeout */
 268                           MACH_PORT_NULL);              /* notify */
 269         if (status != MACH_MSG_SUCCESS) {
 270                 mach_msg_destroy(&msg.header);
 271         }
 272
 273         return;
 274 }
 275
 276
 277 CFStringRef
 278 _SC_trimDomain(CFStringRef domain)
 279 {
 280         CFIndex length;
 281
 282         if (!isA_CFString(domain)) {
 283                 return NULL;
 284         }
 285
 286         // remove any leading/trailing dots
 287         length = CFStringGetLength(domain);
 288         if ((length > 0) &&
 289             (CFStringFindWithOptions(domain,
 290                                      CFSTR("."),
 291                                      CFRangeMake(0, 1),
 292                                      kCFCompareAnchored,
 293                                      NULL) ||
 294              CFStringFindWithOptions(domain,
 295                                      CFSTR("."),
 296                                      CFRangeMake(0, length),
 297                                      kCFCompareAnchored|kCFCompareBackwards,
 298                                      NULL))
 299             ) {
 300              CFMutableStringRef trimmed;
 301
 302              trimmed = CFStringCreateMutableCopy(NULL, 0, domain);
 303              CFStringTrim(trimmed, CFSTR("."));
 304              domain = (CFStringRef)trimmed;
 305              length = CFStringGetLength(domain);
 306         } else {
 307              CFRetain(domain);
 308         }
 309
 310         if (length == 0) {
 311                 CFRelease(domain);
 312                 domain = NULL;
 313         }
 314
 315         return domain;
 316 }
 317
 318
 319 CFStringRef
 320 _SC_hw_model(Boolean trim)
 321 {
 322         static CFStringRef      model           = NULL;
 323         static CFStringRef      model_trimmed   = NULL;
 324         static dispatch_once_t  once;
 325
 326         dispatch_once(&once, ^{
 327                 char    *cp;
 328                 char    hwModel[64];
 329                 int     mib[]           = { CTL_HW, HW_MODEL };
 330                 size_t  n               = sizeof(hwModel);
 331                 int     ret;
 332
 333                 // get HW model name
 334                 bzero(&hwModel, sizeof(hwModel));
 335                 ret = sysctl(mib, sizeof(mib) / sizeof(mib[0]), &hwModel, &n, NULL, 0);
 336                 if (ret != 0) {
 337                         SC_log(LOG_NOTICE, "sysctl() CTL_HW/HW_MODEL failed: %s", strerror(errno));
 338                         return;
 339                 }
 340                 hwModel[sizeof(hwModel) - 1] = '\0';
 341                 model = CFStringCreateWithCString(NULL, hwModel, kCFStringEncodingASCII);
 342
 343                 // and the "trimmed" name
 344                 // ... remove everything after (and including) a comma
 345                 // ... and then any trailing digits
 346                 cp = index(hwModel, ',');
 347                 if (cp != NULL) {
 348                         *cp = '\0';
 349                 }
 350                 n = strlen(hwModel) - 1;
 351                 while (n > 0) {
 352                         if (!isdigit(hwModel[n])) {
 353                                 break;
 354                         }
 355                         hwModel[n--] = '\0';
 356                 }
 357                 model_trimmed = CFStringCreateWithCString(NULL, hwModel, kCFStringEncodingASCII);
 358         });
 359
 360         return trim ? model_trimmed : model;
 361 }
 362
 363
 364 #pragma mark -
 365 #pragma mark Serialization
 366
 367
 368 static kern_return_t
 369 __CFDataCopyVMData(CFDataRef data, void **dataRef, CFIndex *dataLen)
 370 {
 371         kern_return_t           kr;
 372
 373         vm_address_t    vm_address;
 374         vm_size_t       vm_size;
 375
 376         vm_address = (vm_address_t)CFDataGetBytePtr(data);
 377         vm_size    = (vm_size_t)CFDataGetLength(data);
 378         kr = vm_allocate(mach_task_self(), &vm_address, vm_size, VM_FLAGS_ANYWHERE);
 379         if (kr != KERN_SUCCESS) {
 380                 *dataRef = NULL;
 381                 *dataLen = 0;
 382                 return kr;
 383         }
 384
 385         bcopy((char *)CFDataGetBytePtr(data), (void *)vm_address, vm_size);
 386         *dataRef = (void *)vm_address;
 387         *dataLen = vm_size;
 388
 389         return kr;
 390 }
 391
 392
 393 Boolean
 394 _SCSerialize(CFPropertyListRef obj, CFDataRef *xml, void **dataRef, CFIndex *dataLen)
 395 {
 396         CFDataRef               myXml;
 397
 398         if ((xml == NULL) && ((dataRef == NULL) || (dataLen == NULL))) {
 399                 /* if not keeping track of allocated space */
 400                 return FALSE;
 401         }
 402
 403         myXml = CFPropertyListCreateData(NULL,
 404                                          obj,
 405                                          kCFPropertyListBinaryFormat_v1_0,
 406                                          0,
 407                                          NULL);
 408         if (myXml == NULL) {
 409                 SC_log(LOG_NOTICE, "CFPropertyListCreateData() failed");
 410                 if (xml != NULL) {
 411                         *xml = NULL;
 412                 }
 413                 if ((dataRef != NULL) && (dataLen != NULL)) {
 414                         *dataLen = 0;
 415                         *dataRef = NULL;
 416                 }
 417                 return FALSE;
 418         }
 419
 420         if (xml != NULL) {
 421                 *xml = myXml;
 422                 if ((dataRef != NULL) && (dataLen != NULL)) {
 423                         *dataRef = (void *)CFDataGetBytePtr(myXml);
 424                         *dataLen = CFDataGetLength(myXml);
 425                 }
 426         } else {
 427                 kern_return_t   kr;
 428
 429                 kr = __CFDataCopyVMData(myXml, dataRef, dataLen);
 430                 CFRelease(myXml);
 431                 if (kr != KERN_SUCCESS) {
 432                         SC_log(LOG_NOTICE, "__CFDataCreateVMData() failed: %s", mach_error_string(kr));
 433                         return FALSE;
 434                 }
 435         }
 436
 437         return TRUE;
 438 }
 439
 440
 441 Boolean
 442 _SCUnserialize(CFPropertyListRef *obj, CFDataRef xml, void *dataRef, CFIndex dataLen)
 443 {
 444         CFErrorRef      error   = NULL;
 445
 446         if (xml == NULL) {
 447                 kern_return_t   status;
 448
 449                 xml = CFDataCreateWithBytesNoCopy(NULL, (void *)dataRef, dataLen, kCFAllocatorNull);
 450                 *obj = CFPropertyListCreateWithData(NULL, xml, kCFPropertyListImmutable, NULL, &error);
 451                 CFRelease(xml);
 452
 453                 status = vm_deallocate(mach_task_self(), (vm_address_t)dataRef, dataLen);
 454                 if (status != KERN_SUCCESS) {
 455                         SC_log(LOG_NOTICE, "vm_deallocate() failed: %s", mach_error_string(status));
 456                         /* non-fatal???, proceed */
 457                 }
 458         } else {
 459                 *obj = CFPropertyListCreateWithData(NULL, xml, kCFPropertyListImmutable, NULL, &error);
 460         }
 461
 462         if (*obj == NULL) {
 463                 if (error != NULL) {
 464                         SC_log(LOG_NOTICE, "CFPropertyListCreateWithData() failed: %@", error);
 465                         CFRelease(error);
 466                 }
 467                 _SCErrorSet(kSCStatusFailed);
 468                 return FALSE;
 469         }
 470
 471         return TRUE;
 472 }
 473
 474
 475 Boolean
 476 _SCSerializeString(CFStringRef str, CFDataRef *data, void **dataRef, CFIndex *dataLen)
 477 {
 478         CFDataRef       myData;
 479
 480         if (!isA_CFString(str)) {
 481                 /* if not a CFString */
 482                 return FALSE;
 483         }
 484
 485         if ((data == NULL) && ((dataRef == NULL) || (dataLen == NULL))) {
 486                 /* if not keeping track of allocated space */
 487                 return FALSE;
 488         }
 489
 490         myData = CFStringCreateExternalRepresentation(NULL, str, kCFStringEncodingUTF8, 0);
 491         if (myData == NULL) {
 492                 SC_log(LOG_NOTICE, "CFStringCreateExternalRepresentation() failed");
 493                 if (data != NULL) {
 494                         *data = NULL;
 495                 }
 496                 if ((dataRef != NULL) && (dataLen != NULL)) {
 497                         *dataRef = NULL;
 498                         *dataLen = 0;
 499                 }
 500                 return FALSE;
 501         }
 502
 503         if (data != NULL) {
 504                 *data = myData;
 505                 if ((dataRef != NULL) && (dataLen != NULL)) {
 506                         *dataRef = (void *)CFDataGetBytePtr(myData);
 507                         *dataLen = CFDataGetLength(myData);
 508                 }
 509         } else {
 510                 kern_return_t   kr;
 511
 512                 kr = __CFDataCopyVMData(myData, dataRef, dataLen);
 513                 CFRelease(myData);
 514                 if (kr != KERN_SUCCESS) {
 515                         SC_log(LOG_NOTICE, "__CFDataCreateVMData() failed: %s", mach_error_string(kr));
 516                         return FALSE;
 517                 }
 518         }
 519
 520         return TRUE;
 521 }
 522
 523
 524 Boolean
 525 _SCUnserializeString(CFStringRef *str, CFDataRef utf8, void *dataRef, CFIndex dataLen)
 526 {
 527         if (utf8 == NULL) {
 528                 kern_return_t   status;
 529
 530                 utf8 = CFDataCreateWithBytesNoCopy(NULL, dataRef, dataLen, kCFAllocatorNull);
 531                 *str = CFStringCreateFromExternalRepresentation(NULL, utf8, kCFStringEncodingUTF8);
 532                 CFRelease(utf8);
 533
 534                 status = vm_deallocate(mach_task_self(), (vm_address_t)dataRef, dataLen);
 535                 if (status != KERN_SUCCESS) {
 536                         SC_log(LOG_NOTICE, "vm_deallocate() failed: %s", mach_error_string(status));
 537                         /* non-fatal???, proceed */
 538                 }
 539         } else {
 540                 *str = CFStringCreateFromExternalRepresentation(NULL, utf8, kCFStringEncodingUTF8);
 541         }
 542
 543         if (*str == NULL) {
 544                 SC_log(LOG_NOTICE, "CFStringCreateFromExternalRepresentation() failed");
 545                 return FALSE;
 546         }
 547
 548         return TRUE;
 549 }
 550
 551
 552 Boolean
 553 _SCSerializeData(CFDataRef data, void **dataRef, CFIndex *dataLen)
 554 {
 555         kern_return_t   kr;
 556
 557         if (!isA_CFData(data)) {
 558                 /* if not a CFData */
 559                 return FALSE;
 560         }
 561
 562         kr = __CFDataCopyVMData(data, dataRef, dataLen);
 563         if (kr != KERN_SUCCESS) {
 564                 SC_log(LOG_NOTICE, "__CFDataCreateVMData() failed: %s", mach_error_string(kr));
 565                 return FALSE;
 566         }
 567
 568         return TRUE;
 569 }
 570
 571
 572 Boolean
 573 _SCUnserializeData(CFDataRef *data, void *dataRef, CFIndex dataLen)
 574 {
 575         kern_return_t           status;
 576
 577         *data = CFDataCreate(NULL, dataRef, dataLen);
 578         status = vm_deallocate(mach_task_self(), (vm_address_t)dataRef, dataLen);
 579         if (status != KERN_SUCCESS) {
 580                 SC_log(LOG_NOTICE, "vm_deallocate() failed: %s", mach_error_string(status));
 581                 _SCErrorSet(kSCStatusFailed);
 582                 return FALSE;
 583         }
 584
 585         return TRUE;
 586 }
 587
 588
 589 CF_RETURNS_RETAINED CFDictionaryRef
 590 _SCSerializeMultiple(CFDictionaryRef dict)
 591 {
 592         CFIndex                 i;
 593         const void *            keys_q[N_QUICK];
 594         const void **           keys            = keys_q;
 595         CFIndex                 nElements;
 596         CFDictionaryRef         newDict         = NULL;
 597         const void *            pLists_q[N_QUICK];
 598         const void **           pLists          = pLists_q;
 599         const void *            values_q[N_QUICK];
 600         const void **           values          = values_q;
 601
 602         nElements = CFDictionaryGetCount(dict);
 603         if (nElements > 0) {
 604                 if (nElements > (CFIndex)(sizeof(keys_q) / sizeof(CFTypeRef))) {
 605                         keys   = CFAllocatorAllocate(NULL, nElements * sizeof(CFTypeRef), 0);
 606                         values = CFAllocatorAllocate(NULL, nElements * sizeof(CFTypeRef), 0);
 607                         pLists = CFAllocatorAllocate(NULL, nElements * sizeof(CFDataRef), 0);
 608                 }
 609                 bzero(pLists, nElements * sizeof(CFDataRef));
 610
 611                 CFDictionaryGetKeysAndValues(dict, keys, values);
 612                 for (i = 0; i < nElements; i++) {
 613                         pLists[i] = NULL;
 614                         if (!_SCSerialize((CFPropertyListRef)values[i], (CFDataRef *)&pLists[i], NULL, NULL)) {
 615                                 goto done;
 616                         }
 617                 }
 618         }
 619
 620         newDict = CFDictionaryCreate(NULL,
 621                                      keys,
 622                                      pLists,
 623                                      nElements,
 624                                      &kCFTypeDictionaryKeyCallBacks,
 625                                      &kCFTypeDictionaryValueCallBacks);
 626
 627     done :
 628
 629         if (nElements > 0) {
 630                 for (i = 0; i < nElements; i++) {
 631                         if (pLists[i] != NULL)  CFRelease((CFDataRef)pLists[i]);
 632                 }
 633
 634                 if (keys != keys_q) {
 635                         CFAllocatorDeallocate(NULL, keys);
 636                         CFAllocatorDeallocate(NULL, values);
 637                         CFAllocatorDeallocate(NULL, pLists);
 638                 }
 639         }
 640
 641         return newDict;
 642 }
 643
 644
 645 CF_RETURNS_RETAINED
 646 CFDictionaryRef
 647 _SCUnserializeMultiple(CFDictionaryRef dict)
 648 {
 649         const void *            keys_q[N_QUICK];
 650         const void **           keys            = keys_q;
 651         CFIndex                 nElements;
 652         CFDictionaryRef         newDict         = NULL;
 653         const void *            pLists_q[N_QUICK];
 654         const void **           pLists          = pLists_q;
 655         const void *            values_q[N_QUICK];
 656         const void **           values          = values_q;
 657
 658         nElements = CFDictionaryGetCount(dict);
 659         if (nElements > 0) {
 660                 CFIndex i;
 661
 662                 if (nElements > (CFIndex)(sizeof(keys_q) / sizeof(CFTypeRef))) {
 663                         keys   = CFAllocatorAllocate(NULL, nElements * sizeof(CFTypeRef), 0);
 664                         values = CFAllocatorAllocate(NULL, nElements * sizeof(CFTypeRef), 0);
 665                         pLists = CFAllocatorAllocate(NULL, nElements * sizeof(CFTypeRef), 0);
 666                 }
 667                 bzero(pLists, nElements * sizeof(CFTypeRef));
 668
 669                 CFDictionaryGetKeysAndValues(dict, keys, values);
 670                 for (i = 0; i < nElements; i++) {
 671                         if (!_SCUnserialize((CFPropertyListRef *)&pLists[i], values[i], NULL, 0)) {
 672                                 goto done;
 673                         }
 674                 }
 675         }
 676
 677         newDict = CFDictionaryCreate(NULL,
 678                                      keys,
 679                                      pLists,
 680                                      nElements,
 681                                      &kCFTypeDictionaryKeyCallBacks,
 682                                      &kCFTypeDictionaryValueCallBacks);
 683
 684     done :
 685
 686         if (nElements > 0) {
 687                 CFIndex i;
 688
 689                 for (i = 0; i < nElements; i++) {
 690                         if (pLists[i])  CFRelease(pLists[i]);
 691                 }
 692
 693                 if (keys != keys_q) {
 694                         CFAllocatorDeallocate(NULL, keys);
 695                         CFAllocatorDeallocate(NULL, values);
 696                         CFAllocatorDeallocate(NULL, pLists);
 697                 }
 698         }
 699
 700         return newDict;
 701 }
 702
 703
 704 #pragma mark -
 705
 706
 707 CFPropertyListRef
 708 _SCCreatePropertyListFromResource(CFURLRef url)
 709 {
 710         CFDictionaryRef dict            = NULL;
 711         SInt64          fileLen         = 0;
 712         Boolean         ok;
 713         CFReadStreamRef readStream;
 714         CFNumberRef     val             = NULL;
 715
 716         if (!CFURLCopyResourcePropertyForKey(url, kCFURLFileSizeKey, &val, NULL) ||
 717             (val == NULL)) {
 718                 // if size not available
 719                 SC_log(LOG_NOTICE, "CFURLCopyResourcePropertyForKey() size not available: %@", url);
 720                 return NULL;
 721         }
 722
 723         ok = CFNumberGetValue(val, kCFNumberSInt64Type, &fileLen);
 724         CFRelease(val);
 725         if (!ok || (fileLen == 0)) {
 726                 // if empty or size too large
 727                 SC_log(LOG_INFO, "_SCCreatePropertyListFromResource() improper size: %@", url);
 728                 return NULL;
 729         }
 730
 731         readStream = CFReadStreamCreateWithFile(NULL, url);
 732         if (readStream != NULL) {
 733                 if (CFReadStreamOpen(readStream)) {
 734                         UInt8           *buffer;
 735                         CFIndex         dataLen;
 736
 737                         buffer = CFAllocatorAllocate(NULL, (CFIndex)fileLen, 0);
 738                         dataLen = CFReadStreamRead(readStream, buffer, (CFIndex)fileLen);
 739                         if (dataLen == (CFIndex)fileLen) {
 740                                 CFDataRef       data;
 741
 742                                 data = CFDataCreateWithBytesNoCopy(NULL, buffer, (CFIndex)fileLen, kCFAllocatorNull);
 743                                 if (data != NULL) {
 744                                         dict = CFPropertyListCreateWithData(NULL,
 745                                                                             data,
 746                                                                             kCFPropertyListImmutable,
 747                                                                             NULL,
 748                                                                             NULL);
 749                                         CFRelease(data);
 750                                 }
 751                         }
 752                         CFAllocatorDeallocate(NULL, buffer);
 753                         CFReadStreamClose(readStream);
 754                 }
 755                 CFRelease(readStream);
 756         }
 757
 758         return dict;
 759 }
 760
 761
 762 #pragma mark -
 763 #pragma mark CFRunLoop scheduling
 764
 765
 766 __private_extern__ void
 767 _SC_signalRunLoop(CFTypeRef obj, CFRunLoopSourceRef rls, CFArrayRef rlList)
 768 {
 769         CFRunLoopRef    rl      = NULL;
 770         CFRunLoopRef    rl1     = NULL;
 771         CFIndex         i;
 772         CFIndex         n       = CFArrayGetCount(rlList);
 773
 774         if (n == 0) {
 775                 return;
 776         }
 777
 778         /* get first runLoop for this object */
 779         for (i = 0; i < n; i += 3) {
 780                 if (!CFEqual(obj, CFArrayGetValueAtIndex(rlList, i))) {
 781                         continue;
 782                 }
 783
 784                 rl1 = (CFRunLoopRef)CFArrayGetValueAtIndex(rlList, i+1);
 785                 break;
 786         }
 787
 788         if (rl1 == NULL) {
 789                 /* if not scheduled */
 790                 return;
 791         }
 792
 793         /* check if we have another runLoop for this object */
 794         rl = rl1;
 795         for (i = i+3; i < n; i += 3) {
 796                 CFRunLoopRef    rl2;
 797
 798                 if (!CFEqual(obj, CFArrayGetValueAtIndex(rlList, i))) {
 799                         continue;
 800                 }
 801
 802                 rl2 = (CFRunLoopRef)CFArrayGetValueAtIndex(rlList, i+1);
 803                 if (!CFEqual(rl1, rl2)) {
 804                         /* we've got more than one runLoop */
 805                         rl = NULL;
 806                         break;
 807                 }
 808         }
 809
 810         if (rl != NULL) {
 811                 /* if we only have one runLoop */
 812                 CFRunLoopWakeUp(rl);
 813                 return;
 814         }
 815
 816         /* more than one different runLoop, so we must pick one */
 817         for (i = 0; i < n; i+=3) {
 818                 CFStringRef     rlMode;
 819
 820                 if (!CFEqual(obj, CFArrayGetValueAtIndex(rlList, i))) {
 821                         continue;
 822                 }
 823
 824                 rl     = (CFRunLoopRef)CFArrayGetValueAtIndex(rlList, i+1);
 825                 rlMode = CFRunLoopCopyCurrentMode(rl);
 826                 if (rlMode != NULL) {
 827                         Boolean waiting;
 828
 829                         waiting = (CFRunLoopIsWaiting(rl) && CFRunLoopContainsSource(rl, rls, rlMode));
 830                         CFRelease(rlMode);
 831                         if (waiting) {
 832                                 /* we've found a runLoop that's "ready" */
 833                                 CFRunLoopWakeUp(rl);
 834                                 return;
 835                         }
 836                 }
 837         }
 838
 839         /* didn't choose one above, so choose first */
 840         CFRunLoopWakeUp(rl1);
 841         return;
 842 }
 843
 844
 845 __private_extern__ Boolean
 846 _SC_isScheduled(CFTypeRef obj, CFRunLoopRef runLoop, CFStringRef runLoopMode, CFMutableArrayRef rlList)
 847 {
 848         CFIndex i;
 849         CFIndex n       = CFArrayGetCount(rlList);
 850
 851         for (i = 0; i < n; i += 3) {
 852                 if ((obj != NULL)         && !CFEqual(obj,         CFArrayGetValueAtIndex(rlList, i))) {
 853                         continue;
 854                 }
 855                 if ((runLoop != NULL)     && !CFEqual(runLoop,     CFArrayGetValueAtIndex(rlList, i+1))) {
 856                         continue;
 857                 }
 858                 if ((runLoopMode != NULL) && !CFEqual(runLoopMode, CFArrayGetValueAtIndex(rlList, i+2))) {
 859                         continue;
 860                 }
 861                 return TRUE;
 862         }
 863
 864         return FALSE;
 865 }
 866
 867
 868 __private_extern__ void
 869 _SC_schedule(CFTypeRef obj, CFRunLoopRef runLoop, CFStringRef runLoopMode, CFMutableArrayRef rlList)
 870 {
 871         CFArrayAppendValue(rlList, obj);
 872         CFArrayAppendValue(rlList, runLoop);
 873         CFArrayAppendValue(rlList, runLoopMode);
 874
 875         return;
 876 }
 877
 878
 879 __private_extern__ Boolean
 880 _SC_unschedule(CFTypeRef obj, CFRunLoopRef runLoop, CFStringRef runLoopMode, CFMutableArrayRef rlList, Boolean all)
 881 {
 882         CFIndex i       = 0;
 883         Boolean found   = FALSE;
 884         CFIndex n       = CFArrayGetCount(rlList);
 885
 886         while (i < n) {
 887                 if ((obj != NULL)         && !CFEqual(obj,         CFArrayGetValueAtIndex(rlList, i))) {
 888                         i += 3;
 889                         continue;
 890                 }
 891                 if ((runLoop != NULL)     && !CFEqual(runLoop,     CFArrayGetValueAtIndex(rlList, i+1))) {
 892                         i += 3;
 893                         continue;
 894                 }
 895                 if ((runLoopMode != NULL) && !CFEqual(runLoopMode, CFArrayGetValueAtIndex(rlList, i+2))) {
 896                         i += 3;
 897                         continue;
 898                 }
 899
 900                 found = TRUE;
 901
 902                 CFArrayRemoveValueAtIndex(rlList, i + 2);
 903                 CFArrayRemoveValueAtIndex(rlList, i + 1);
 904                 CFArrayRemoveValueAtIndex(rlList, i);
 905
 906                 if (!all) {
 907                         return found;
 908                 }
 909
 910                 n -= 3;
 911         }
 912
 913         return found;
 914 }
 915
 916
 917 #pragma mark -
 918 #pragma mark Bundle
 919
 920
 921 #define SYSTEMCONFIGURATION_BUNDLE_ID           CFSTR("com.apple.SystemConfiguration")
 922 #define SYSTEMCONFIGURATION_FRAMEWORK_PATH_LEN  (sizeof(SYSTEMCONFIGURATION_FRAMEWORK_PATH) - 1)
 923
 924 #define SUFFIX_SYM                              "~sym"
 925 #define SUFFIX_SYM_LEN                          (sizeof(SUFFIX_SYM) - 1)
 926
 927 #define SUFFIX_DST                              "~dst"
 928
 929
 930 CFBundleRef
 931 _SC_CFBundleGet(void)
 932 {
 933         static CFBundleRef      bundle  = NULL;
 934         char                    *env;
 935         size_t                  len;
 936         CFURLRef                url;
 937
 938         if (bundle != NULL) {
 939                 goto done;
 940         }
 941
 942         bundle = CFBundleGetBundleWithIdentifier(SYSTEMCONFIGURATION_BUNDLE_ID);
 943         if (bundle != NULL) {
 944                 CFRetain(bundle);       // we want to hold a reference to the bundle
 945                 goto done;
 946         } else {
 947                 SC_log(LOG_NOTICE, "could not get CFBundle for \"%@\". Trying harder...",
 948                        SYSTEMCONFIGURATION_BUNDLE_ID);
 949         }
 950
 951         // if appropriate (e.g. when debugging), try a bit harder
 952
 953         env = getenv("DYLD_FRAMEWORK_PATH");
 954         len = (env != NULL) ? strlen(env) : 0;
 955
 956         if (len > 0) {  /* We are debugging */
 957
 958                 // trim any trailing slashes
 959                 while (len > 1) {
 960                         if (env[len - 1] != '/') {
 961                                 break;
 962                         }
 963                         len--;
 964                 }
 965
 966                 // if DYLD_FRAMEWORK_PATH is ".../xxx~sym" than try ".../xxx~dst"
 967                 if ((len > SUFFIX_SYM_LEN) &&
 968                     (strncmp(&env[len - SUFFIX_SYM_LEN], SUFFIX_SYM, SUFFIX_SYM_LEN) == 0) &&
 969                     ((len + SYSTEMCONFIGURATION_FRAMEWORK_PATH_LEN) < MAXPATHLEN)) {
 970                         char            path[MAXPATHLEN];
 971
 972                         strlcpy(path, env, sizeof(path));
 973                         strlcpy(&path[len - SUFFIX_SYM_LEN], SUFFIX_DST, sizeof(path) - (len - SUFFIX_SYM_LEN));
 974                         strlcat(&path[len], SYSTEMCONFIGURATION_FRAMEWORK_PATH, sizeof(path) - len);
 975
 976                         url = CFURLCreateFromFileSystemRepresentation(NULL,
 977                                                                       (UInt8 *)path,
 978                                                                       len + SYSTEMCONFIGURATION_FRAMEWORK_PATH_LEN,
 979                                                                       TRUE);
 980                         bundle = CFBundleCreate(NULL, url);
 981                         CFRelease(url);
 982                 }
 983         }
 984
 985         if (bundle == NULL) { /* Try a more "direct" route to get the bundle */
 986
 987                 url = CFURLCreateWithFileSystemPath(NULL,
 988                                                     CFSTR(SYSTEMCONFIGURATION_FRAMEWORK_PATH),
 989                                                     kCFURLPOSIXPathStyle,
 990                                                     TRUE);
 991
 992                 bundle = CFBundleCreate(NULL, url);
 993                 CFRelease(url);
 994         }
 995
 996         if (bundle == NULL) {
 997                 SC_log(LOG_ERR, "could not get CFBundle for \"%@\"", SYSTEMCONFIGURATION_BUNDLE_ID);
 998         }
 999
1000 done:
1001         return bundle;
1002 }
1003
1004
1005 /*
1006  * cachedInfo
1007  *   <dict>
1008  *      <key>bundleID-tableName</key>
1009  *      <dict>
1010  *        ... property list from non-localized bundle URL
1011  *      </dict>
1012  *   </dict>
1013  */
1014 static CFMutableDictionaryRef   cachedInfo      = NULL;
1015
1016
1017 static dispatch_queue_t
1018 _SC_CFBundleCachedInfoQueue()
1019 {
1020         static dispatch_once_t  once;
1021         static dispatch_queue_t q;
1022
1023         dispatch_once(&once, ^{
1024                 q = dispatch_queue_create("_SC_CFBundleCachedInfo", NULL);
1025         });
1026
1027         return q;
1028 }
1029
1030
1031 static CFStringRef
1032 _SC_CFBundleCachedInfoCopyTableKey(CFBundleRef bundle, CFStringRef tableName)
1033 {
1034         CFStringRef     bundleID;
1035         CFStringRef     tableKey;
1036
1037         bundleID = CFBundleGetIdentifier(bundle);
1038         tableKey = CFStringCreateWithFormat(NULL, NULL, CFSTR("%@: %@"), bundleID, tableName);
1039         return tableKey;
1040 }
1041
1042
1043 static CFDictionaryRef
1044 _SC_CFBundleCachedInfoCopyTable(CFBundleRef bundle, CFStringRef tableName)
1045 {
1046         __block CFDictionaryRef         dict    = NULL;
1047
1048         dispatch_sync(_SC_CFBundleCachedInfoQueue(), ^{
1049                 if (cachedInfo != NULL) {
1050                         CFStringRef     tableKey;
1051
1052                         tableKey = _SC_CFBundleCachedInfoCopyTableKey(bundle, tableName);
1053                         dict = CFDictionaryGetValue(cachedInfo, tableKey);
1054                         if (dict != NULL) {
1055                                 CFRetain(dict);
1056                         }
1057                         CFRelease(tableKey);
1058                 }
1059         });
1060
1061         return dict;
1062 }
1063
1064
1065 static void
1066 _SC_CFBundleCachedInfoSaveTable(CFBundleRef bundle, CFStringRef tableName, CFDictionaryRef table)
1067 {
1068
1069         dispatch_sync(_SC_CFBundleCachedInfoQueue(), ^{
1070                 CFStringRef     tableKey;
1071
1072                 tableKey = _SC_CFBundleCachedInfoCopyTableKey(bundle, tableName);
1073                 SC_log(LOG_DEBUG, "Caching %@", tableKey);
1074
1075                 if (cachedInfo == NULL) {
1076                         cachedInfo = CFDictionaryCreateMutable(NULL,
1077                                                                0,
1078                                                                &kCFTypeDictionaryKeyCallBacks,
1079                                                                &kCFTypeDictionaryValueCallBacks);
1080                 }
1081                 CFDictionarySetValue(cachedInfo, tableKey, table);
1082                 CFRelease(tableKey);
1083         });
1084
1085         return;
1086 }
1087
1088
1089 CFStringRef
1090 _SC_CFBundleCopyNonLocalizedString(CFBundleRef bundle, CFStringRef key, CFStringRef value, CFStringRef tableName)
1091 {
1092         CFStringRef     str     = NULL;
1093         CFDictionaryRef table   = NULL;
1094         CFURLRef        url;
1095
1096         if ((tableName == NULL) || CFEqual(tableName, CFSTR(""))) {
1097                 tableName = CFSTR("Localizable");
1098         }
1099
1100         table = _SC_CFBundleCachedInfoCopyTable(bundle, tableName);
1101         if (table == NULL) {
1102                 url = CFBundleCopyResourceURLForLocalization(bundle,
1103                                                              tableName,
1104                                                              CFSTR("strings"),
1105                                                              NULL,
1106                                                              CFSTR("English"));
1107                 if (url != NULL) {
1108                         table = _SCCreatePropertyListFromResource(url);
1109                         CFRelease(url);
1110                         if (table != NULL) {
1111                                 _SC_CFBundleCachedInfoSaveTable(bundle, tableName, table);
1112                         }
1113                 } else {
1114                         SC_log(LOG_ERR, "failed to get resource url: {bundle:%@, table: %@}", bundle, tableName);
1115                 }
1116         }
1117
1118         if (table != NULL) {
1119                 if (isA_CFDictionary(table)) {
1120                         str = CFDictionaryGetValue(table, key);
1121                         if (str != NULL) {
1122                                 CFRetain(str);
1123                         }
1124                 }
1125
1126                 CFRelease(table);
1127         }
1128
1129         if (str == NULL) {
1130                 str = CFRetain(value);
1131         }
1132
1133         return str;
1134 }
1135
1136
1137 #pragma mark -
1138 #pragma mark Mach port / CFMachPort management
1139
1140
1141 CFMachPortRef
1142 _SC_CFMachPortCreateWithPort(const char         *portDescription,
1143                              mach_port_t        portNum,
1144                              CFMachPortCallBack callout,
1145                              CFMachPortContext  *context)
1146 {
1147         CFMachPortRef   port;
1148         Boolean shouldFree      = FALSE;
1149
1150         port = CFMachPortCreateWithPort(NULL, portNum, callout, context, &shouldFree);
1151         if ((port == NULL) || shouldFree) {
1152                 CFStringRef     err;
1153                 char            *crash_info     = NULL;
1154
1155                 SC_log(LOG_NOTICE, "%s: CFMachPortCreateWithPort() failed , port = %p",
1156                        portDescription,
1157                        (void *)(uintptr_t)portNum);
1158                 if (port != NULL) {
1159                         err = CFStringCreateWithFormat(NULL, NULL,
1160                                                        CFSTR("%s: CFMachPortCreateWithPort recycled, [old] port = %@"),
1161                                                        portDescription, port);
1162                 } else {
1163                         err = CFStringCreateWithFormat(NULL, NULL,
1164                                                        CFSTR("%s: CFMachPortCreateWithPort returned NULL"),
1165                                                        portDescription);
1166                 }
1167                 crash_info = _SC_cfstring_to_cstring(err, NULL, 0, kCFStringEncodingASCII);
1168                 if (err != NULL) CFRelease(err);
1169
1170
1171                 err = CFStringCreateWithFormat(NULL,
1172                                                NULL,
1173                                                CFSTR("A recycled mach_port has been detected by \"%s\"."),
1174                                                getprogname());
1175                 _SC_crash(crash_info, CFSTR("CFMachPort error"), err);
1176                 CFAllocatorDeallocate(NULL, crash_info);
1177                 if (err != NULL) CFRelease(err);
1178         }
1179
1180         return port;
1181 }
1182
1183
1184 #pragma mark -
1185 #pragma mark DOS encoding/codepage
1186
1187
1188 #if     !TARGET_OS_IPHONE
1189 void
1190 _SC_dos_encoding_and_codepage(CFStringEncoding  macEncoding,
1191                               UInt32            macRegion,
1192                               CFStringEncoding  *dosEncoding,
1193                               UInt32            *dosCodepage)
1194 {
1195         switch (macEncoding) {
1196         case kCFStringEncodingMacRoman:
1197                 if (macRegion != 0) /* anything non-zero is not US */
1198                 *dosEncoding = kCFStringEncodingDOSLatin1;
1199                 else /* US region */
1200                 *dosEncoding = kCFStringEncodingDOSLatinUS;
1201                 break;
1202
1203         case kCFStringEncodingMacJapanese:
1204                 *dosEncoding = kCFStringEncodingDOSJapanese;
1205                 break;
1206
1207         case kCFStringEncodingMacChineseTrad:
1208                 *dosEncoding = kCFStringEncodingDOSChineseTrad;
1209                 break;
1210
1211         case kCFStringEncodingMacKorean:
1212                 *dosEncoding = kCFStringEncodingDOSKorean;
1213                 break;
1214
1215         case kCFStringEncodingMacArabic:
1216                 *dosEncoding = kCFStringEncodingDOSArabic;
1217                 break;
1218
1219         case kCFStringEncodingMacHebrew:
1220                 *dosEncoding = kCFStringEncodingDOSHebrew;
1221                 break;
1222
1223         case kCFStringEncodingMacGreek:
1224                 *dosEncoding = kCFStringEncodingDOSGreek;
1225                 break;
1226
1227         case kCFStringEncodingMacCyrillic:
1228                 *dosEncoding = kCFStringEncodingDOSCyrillic;
1229                 break;
1230
1231         case kCFStringEncodingMacThai:
1232                 *dosEncoding = kCFStringEncodingDOSThai;
1233                 break;
1234
1235         case kCFStringEncodingMacChineseSimp:
1236                 *dosEncoding = kCFStringEncodingDOSChineseSimplif;
1237                 break;
1238
1239         case kCFStringEncodingMacCentralEurRoman:
1240                 *dosEncoding = kCFStringEncodingDOSLatin2;
1241                 break;
1242
1243         case kCFStringEncodingMacTurkish:
1244                 *dosEncoding = kCFStringEncodingDOSTurkish;
1245                 break;
1246
1247         case kCFStringEncodingMacCroatian:
1248                 *dosEncoding = kCFStringEncodingDOSLatin2;
1249                 break;
1250
1251         case kCFStringEncodingMacIcelandic:
1252                 *dosEncoding = kCFStringEncodingDOSIcelandic;
1253                 break;
1254
1255         case kCFStringEncodingMacRomanian:
1256                 *dosEncoding = kCFStringEncodingDOSLatin2;
1257                 break;
1258
1259         case kCFStringEncodingMacFarsi:
1260                 *dosEncoding = kCFStringEncodingDOSArabic;
1261                 break;
1262
1263         case kCFStringEncodingMacUkrainian:
1264                 *dosEncoding = kCFStringEncodingDOSCyrillic;
1265                 break;
1266
1267         default:
1268                 *dosEncoding = kCFStringEncodingDOSLatin1;
1269                 break;
1270         }
1271
1272         *dosCodepage = CFStringConvertEncodingToWindowsCodepage(*dosEncoding);
1273         return;
1274 }
1275 #endif  // !TARGET_OS_IPHONE
1276
1277
1278 #pragma mark -
1279 #pragma mark Debugging
1280
1281
1282 /*
1283  * print status of in-use mach ports
1284  */
1285 void
1286 _SC_logMachPortStatus(void)
1287 {
1288         kern_return_t           status;
1289         mach_port_name_array_t  ports;
1290         mach_port_type_array_t  types;
1291         mach_msg_type_number_t  pi, pn, tn;
1292         CFMutableStringRef      str;
1293
1294         SC_log(LOG_DEBUG, "----------");
1295
1296         /* report on ALL mach ports associated with this task */
1297         status = mach_port_names(mach_task_self(), &ports, &pn, &types, &tn);
1298         if (status == MACH_MSG_SUCCESS) {
1299                 str = CFStringCreateMutable(NULL, 0);
1300                 for (pi = 0; pi < pn; pi++) {
1301                         char    rights[16], *rp = &rights[0];
1302
1303                         if (types[pi] != MACH_PORT_TYPE_NONE) {
1304                                 *rp++ = ' ';
1305                                 *rp++ = '(';
1306                                 if (types[pi] & MACH_PORT_TYPE_SEND)
1307                                         *rp++ = 'S';
1308                                 if (types[pi] & MACH_PORT_TYPE_RECEIVE)
1309                                         *rp++ = 'R';
1310                                 if (types[pi] & MACH_PORT_TYPE_SEND_ONCE)
1311                                         *rp++ = 'O';
1312                                 if (types[pi] & MACH_PORT_TYPE_PORT_SET)
1313                                         *rp++ = 'P';
1314                                 if (types[pi] & MACH_PORT_TYPE_DEAD_NAME)
1315                                         *rp++ = 'D';
1316                                 *rp++ = ')';
1317                         }
1318                         *rp = '\0';
1319                         CFStringAppendFormat(str, NULL, CFSTR(" %d%s"), ports[pi], rights);
1320                 }
1321                 SC_log(LOG_DEBUG, "Task ports (n=%d):%@", pn, str);
1322                 CFRelease(str);
1323         }
1324
1325         return;
1326 }
1327
1328
1329 __private_extern__
1330 kern_return_t
1331 _SC_getMachPortReferences(mach_port_t           port,
1332                           mach_port_type_t      *pt,
1333                           mach_port_urefs_t     *refs_send,
1334                           mach_port_urefs_t     *refs_recv,
1335                           mach_port_status_t    *recv_status,
1336                           mach_port_urefs_t     *refs_once,
1337                           mach_port_urefs_t     *refs_pset,
1338                           mach_port_urefs_t     *refs_dead,
1339                           const char            *err_prefix)
1340 {
1341         kern_return_t           status;
1342
1343         status = mach_port_type(mach_task_self(), port, pt);
1344         if (status != KERN_SUCCESS) {
1345                 SC_log(LOG_DEBUG, "%smach_port_type(..., 0x%x): %s",
1346                        err_prefix,
1347                        port,
1348                        mach_error_string(status));
1349                 return status;
1350         }
1351
1352         if ((refs_send != NULL) && ((*pt & MACH_PORT_TYPE_SEND) != 0)) {
1353                 status = mach_port_get_refs(mach_task_self(), port, MACH_PORT_RIGHT_SEND, refs_send);
1354                 if (status != KERN_SUCCESS) {
1355                         SC_log(LOG_DEBUG, "%smach_port_get_refs(..., 0x%x, MACH_PORT_RIGHT_SEND): %s",
1356                                err_prefix,
1357                                port,
1358                                mach_error_string(status));
1359                         return status;
1360                 }
1361         }
1362
1363         if ((refs_recv != NULL) && (recv_status != NULL) && ((*pt & MACH_PORT_TYPE_RECEIVE) != 0)) {
1364                 mach_msg_type_number_t  count;
1365
1366                 status = mach_port_get_refs(mach_task_self(), port, MACH_PORT_RIGHT_RECEIVE, refs_recv);
1367                 if (status != KERN_SUCCESS) {
1368                         SC_log(LOG_DEBUG, "%smach_port_get_refs(..., 0x%x, MACH_PORT_RIGHT_RECEIVE): %s",
1369                                err_prefix,
1370                                port,
1371                                mach_error_string(status));
1372                         return status;
1373                 }
1374
1375                 count = MACH_PORT_RECEIVE_STATUS_COUNT;
1376                 status = mach_port_get_attributes(mach_task_self(),
1377                                                   port,
1378                                                   MACH_PORT_RECEIVE_STATUS,
1379                                                   (mach_port_info_t)recv_status,
1380                                                   &count);
1381                 if (status != KERN_SUCCESS) {
1382                         SC_log(LOG_DEBUG, "%smach_port_get_attributes(..., 0x%x, MACH_PORT_RECEIVE_STATUS): %s",
1383                                err_prefix,
1384                                port,
1385                                mach_error_string(status));
1386                         return status;
1387                 }
1388         }
1389
1390         if ((refs_once != NULL) && ((*pt & MACH_PORT_TYPE_SEND_ONCE) != 0)) {
1391                 status = mach_port_get_refs(mach_task_self(), port, MACH_PORT_RIGHT_SEND_ONCE, refs_once);
1392                 if (status != KERN_SUCCESS) {
1393                         SC_log(LOG_DEBUG, "%smach_port_get_refs(..., 0x%x, MACH_PORT_RIGHT_SEND_ONCE): %s",
1394                                err_prefix,
1395                                port,
1396                                mach_error_string(status));
1397                         return status;
1398                 }
1399         }
1400
1401         if ((refs_pset != NULL) && ((*pt & MACH_PORT_TYPE_PORT_SET) != 0)) {
1402                 status = mach_port_get_refs(mach_task_self(), port, MACH_PORT_RIGHT_PORT_SET, refs_pset);
1403                 if (status != KERN_SUCCESS) {
1404                         SC_log(LOG_DEBUG, "%smach_port_get_refs(..., 0x%x, MACH_PORT_RIGHT_PORT_SET): %s",
1405                                err_prefix,
1406                                port,
1407                                mach_error_string(status));
1408                         return status;
1409                 }
1410         }
1411
1412         if ((refs_dead != NULL) && ((*pt & MACH_PORT_TYPE_DEAD_NAME) != 0)) {
1413                 status = mach_port_get_refs(mach_task_self(), port, MACH_PORT_RIGHT_DEAD_NAME, refs_dead);
1414                 if (status != KERN_SUCCESS) {
1415                         SC_log(LOG_DEBUG, "%smach_port_get_refs(..., 0x%x, MACH_PORT_RIGHT_DEAD_NAME): %s",
1416                                err_prefix,
1417                                port,
1418                                mach_error_string(status));
1419                         return status;
1420                 }
1421         }
1422
1423         return KERN_SUCCESS;
1424 }
1425
1426
1427 void
1428 _SC_logMachPortReferences(const char *str, mach_port_t port)
1429 {
1430         const char              *blanks         = "                                                            ";
1431         char                    buf[60];
1432         mach_port_type_t        pt;
1433         mach_port_status_t      recv_status     = { .mps_nsrequest = 0, };
1434         mach_port_urefs_t       refs_send       = 0;
1435         mach_port_urefs_t       refs_recv       = 0;
1436         mach_port_urefs_t       refs_once       = 0;
1437         mach_port_urefs_t       refs_pset       = 0;
1438         mach_port_urefs_t       refs_dead       = 0;
1439         kern_return_t           status;
1440
1441         buf[0] = '\0';
1442         if (str != NULL) {
1443                 static int      is_configd      = -1;
1444
1445                 if (is_configd == -1) {
1446                         is_configd = (strcmp(getprogname(), _SC_SERVER_PROG) == 0);
1447                 }
1448                 if (is_configd == 1) {
1449                         // if "configd", add indication if this is the M[ain] or [P]lugin thread
1450                         strlcpy(buf,
1451                                 (CFRunLoopGetMain() == CFRunLoopGetCurrent()) ? "M " : "P ",
1452                                 sizeof(buf));
1453                 }
1454
1455                 // add provided string
1456                 strlcat(buf, str, sizeof(buf));
1457
1458                 // fill
1459                 strlcat(buf, blanks, sizeof(buf));
1460                 if (strcmp(&buf[sizeof(buf) - 3], "  ") == 0) {
1461                         buf[sizeof(buf) - 3] = ':';
1462                 }
1463         }
1464
1465         status = _SC_getMachPortReferences(port,
1466                                            &pt,
1467                                            &refs_send,
1468                                            &refs_recv,
1469                                            &recv_status,
1470                                            &refs_once,
1471                                            &refs_pset,
1472                                            &refs_dead,
1473                                            buf);
1474         if (status != KERN_SUCCESS) {
1475                 return;
1476         }
1477
1478         SC_log(LOG_DEBUG, "%smach port 0x%x (%d): send=%d, receive=%d, send once=%d, port set=%d, dead name=%d%s%s",
1479                buf,
1480                port,
1481                port,
1482                refs_send,
1483                refs_recv,
1484                refs_once,
1485                refs_pset,
1486                refs_dead,
1487                recv_status.mps_nsrequest ? ", no more senders"   : "",
1488                ((pt & MACH_PORT_TYPE_DEAD_NAME) != 0) ? ", dead name request" : "");
1489
1490         return;
1491 }
1492
1493
1494 CFStringRef
1495 _SC_copyBacktrace()
1496 {
1497         int                     n;
1498         void                    *stack[64];
1499         char                    **symbols;
1500         CFMutableStringRef      trace;
1501
1502         n = backtrace(stack, sizeof(stack)/sizeof(stack[0]));
1503         if (n == -1) {
1504                 SC_log(LOG_NOTICE, "backtrace() failed: %s", strerror(errno));
1505                 return NULL;
1506         }
1507
1508         trace = CFStringCreateMutable(NULL, 0);
1509
1510         symbols = backtrace_symbols(stack, n);
1511         if (symbols != NULL) {
1512                 int     i;
1513
1514                 for (i = 0; i < n; i++) {
1515                         CFStringAppendFormat(trace, NULL, CFSTR("%s\n"), symbols[i]);
1516                 }
1517
1518                 free(symbols);
1519         }
1520
1521         return trace;
1522 }
1523
1524
1525 /* CrashReporter info */
1526 #if     !TARGET_OS_IPHONE
1527 #include <CrashReporterClient.h>
1528 #else   // !TARGET_OS_IPHONE
1529 const char *__crashreporter_info__ = NULL;
1530 asm(".desc ___crashreporter_info__, 0x10");
1531 #endif  // !TARGET_OS_IPHONE
1532
1533
1534 static Boolean
1535 _SC_SimulateCrash(const char *crash_info, CFStringRef notifyHeader, CFStringRef notifyMessage)
1536 {
1537 #if     !TARGET_OS_EMBEDDED || defined(DO_NOT_INFORM)
1538 #pragma unused(notifyHeader)
1539 #pragma unused(notifyMessage)
1540 #endif  // !TARGET_OS_EMBEDDED || defined(DO_NOT_INFORM)
1541 #if     TARGET_OS_SIMULATOR
1542 #pragma unused(crash_info)
1543 #endif  // TARGET_OS_SIMULATOR
1544         Boolean ok      = FALSE;
1545
1546 #if     !TARGET_OS_SIMULATOR
1547         static bool             (*dyfunc_SimulateCrash)(pid_t, mach_exception_data_type_t, CFStringRef) = NULL;
1548         static void             *image  = NULL;
1549         static dispatch_once_t  once;
1550
1551         dispatch_once(&once, ^{
1552                 image = _SC_dlopen("/System/Library/PrivateFrameworks/CrashReporterSupport.framework/CrashReporterSupport");
1553                 if (image != NULL) {
1554                         dyfunc_SimulateCrash = dlsym(image, "SimulateCrash");
1555                 }
1556         });
1557
1558         if (dyfunc_SimulateCrash != NULL) {
1559                 CFStringRef     str;
1560
1561                 str = CFStringCreateWithCString(NULL, crash_info, kCFStringEncodingUTF8);
1562                 ok = dyfunc_SimulateCrash(getpid(), 0xbad0005cull, str);
1563                 CFRelease(str);
1564         }
1565
1566 #if     TARGET_OS_EMBEDDED && !defined(DO_NOT_INFORM)
1567         if (ok && (notifyHeader != NULL) && (notifyMessage != NULL)) {
1568                 static Boolean  warned  = FALSE;
1569
1570                 if (!warned) {
1571                         CFStringRef     displayMessage;
1572
1573                         displayMessage = CFStringCreateWithFormat(NULL,
1574                                                                   NULL,
1575                                                                   CFSTR("%@\n\nPlease collect the crash report and file a Radar."),
1576                                                                   notifyMessage);
1577                         CFUserNotificationDisplayNotice(0,
1578                                                         kCFUserNotificationStopAlertLevel,
1579                                                         NULL,
1580                                                         NULL,
1581                                                         NULL,
1582                                                         notifyHeader,
1583                                                         displayMessage,
1584                                                         NULL);
1585                         CFRelease(displayMessage);
1586                         warned = TRUE;
1587                 }
1588         }
1589 #endif  // TARGET_OS_EMBEDDED && !defined(DO_NOT_INFORM)
1590 #endif  // !TARGET_OS_SIMULATOR
1591
1592         return ok;
1593 }
1594
1595
1596 void
1597 _SC_crash(const char *crash_info, CFStringRef notifyHeader, CFStringRef notifyMessage)
1598 {
1599         Boolean ok      = FALSE;
1600
1601         if (crash_info != NULL) {
1602 #if     !TARGET_OS_IPHONE
1603                 CRSetCrashLogMessage(crash_info);
1604 #else   // !TARGET_OS_IPHONE
1605                 __crashreporter_info__ = crash_info;
1606 #endif  // !TARGET_OS_IPHONE
1607
1608                 SC_log(LOG_NOTICE, "%s", crash_info);
1609         }
1610
1611         if (_SC_isAppleInternal()) {
1612                 // simulate a crash report
1613                 ok = _SC_SimulateCrash(crash_info, notifyHeader, notifyMessage);
1614 #ifndef DO_NOT_CRASH
1615                 if (!ok) {
1616                         // if we could not simulate a crash report, crash for real
1617                         __builtin_trap();
1618                 }
1619 #endif  // DO_NOT_CRASH
1620         }
1621
1622 #if     !TARGET_OS_IPHONE
1623         CRSetCrashLogMessage(NULL);
1624 #else   // !TARGET_OS_IPHONE
1625         __crashreporter_info__ = NULL;
1626 #endif  // !TARGET_OS_IPHONE
1627         return;
1628 }
1629
1630
1631 Boolean
1632 _SC_getconninfo(int socket, struct sockaddr_storage *src_addr, struct sockaddr_storage *dest_addr, int *if_index, uint32_t *flags)
1633 {
1634         struct so_cinforeq      request;
1635
1636         memset(&request, 0, sizeof(request));
1637
1638         if (src_addr != NULL) {
1639                 memset(src_addr, 0, sizeof(*src_addr));
1640                 request.scir_src = (struct sockaddr *)src_addr;
1641                 request.scir_src_len = sizeof(*src_addr);
1642         }
1643
1644         if (dest_addr != NULL) {
1645                 memset(dest_addr, 0, sizeof(*dest_addr));
1646                 request.scir_dst = (struct sockaddr *)dest_addr;
1647                 request.scir_dst_len = sizeof(*dest_addr);
1648         }
1649
1650         if (ioctl(socket, SIOCGCONNINFO, &request) != 0) {
1651                 SC_log(LOG_NOTICE, "SIOCGCONNINFO failed: %s", strerror(errno));
1652                 return FALSE;
1653         }
1654
1655         if (if_index != NULL) {
1656                 *if_index = 0;
1657                 *if_index = request.scir_ifindex;
1658         }
1659
1660         if (flags != NULL) {
1661                 *flags = 0;
1662                 *flags = request.scir_flags;
1663         }
1664
1665         return TRUE;
1666 }