SystemConfiguration.fproj/SCDPrivate.c

   1 /*
   2  * Copyright (c) 2000-2019 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 SC_LOG_HANDLE   _SC_LOG_DEFAULT
  35 #include <SystemConfiguration/SystemConfiguration.h>
  36 #include <SystemConfiguration/SCValidation.h>
  37 #include <SystemConfiguration/SCPrivate.h>
  38
  39 #include <sys/param.h>
  40 #include <sys/types.h>
  41 #include <sys/socket.h>
  42 #include <sys/ioctl.h>
  43 #include <net/if.h>
  44 #include <net/if_dl.h>
  45 #include <netinet/in.h>
  46 #include <arpa/inet.h>
  47
  48 #include <dispatch/dispatch.h>
  49
  50 #include <mach/mach.h>
  51 #include <mach/notify.h>
  52 #include <mach/mach_error.h>
  53 #include <pthread.h>
  54
  55 #include <execinfo.h>
  56 #include <unistd.h>
  57
  58 #if     TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR
  59 #include <CoreFoundation/CFUserNotification.h>
  60 #endif  // TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR
  61
  62 /* CrashReporter "Application Specific Information" */
  63 #include <CrashReporterClient.h>
  64
  65 #define N_QUICK 32
  66
  67
  68 #pragma mark -
  69 #pragma mark Miscellaneous
  70
  71
  72 __private_extern__ char *
  73 _SC_cfstring_to_cstring_ext(CFStringRef cfstr, char *buf, CFIndex bufLen, CFStringEncoding encoding, UInt8 lossByte, CFIndex *usedBufLen)
  74 {
  75         CFIndex converted;
  76         CFIndex last    = 0;
  77         CFIndex len;
  78
  79         if (cfstr == NULL) {
  80                 cfstr = CFSTR("");
  81         }
  82         len = CFStringGetLength(cfstr);
  83
  84         /* how much buffer space will we really need? */
  85         converted = CFStringGetBytes(cfstr,
  86                                      CFRangeMake(0, len),
  87                                      encoding,
  88                                      lossByte,
  89                                      FALSE,
  90                                      NULL,
  91                                      0,
  92                                      &last);
  93         if (converted < len) {
  94                 /* if full string could not be converted */
  95                 if (buf != NULL) {
  96                         buf[0] = '\0';
  97                 }
  98                 return NULL;
  99         }
 100
 101         if (buf != NULL) {
 102                 if (bufLen < (last + 1)) {
 103                         /* if the size of the provided buffer is too small */
 104                         buf[0] = '\0';
 105                         return NULL;
 106                 }
 107         } else {
 108                 /* allocate a buffer */
 109                 bufLen = last + 1;
 110                 buf = CFAllocatorAllocate(NULL, bufLen, 0);
 111                 if (buf == NULL) {
 112                         return NULL;
 113                 }
 114         }
 115
 116         (void)CFStringGetBytes(cfstr,
 117                                CFRangeMake(0, len),
 118                                encoding,
 119                                lossByte,
 120                                FALSE,
 121                                (UInt8 *)buf,
 122                                bufLen,
 123                                &last);
 124         buf[last] = '\0';
 125
 126         if (usedBufLen != NULL) {
 127                 *usedBufLen = last;
 128         }
 129
 130         return buf;
 131 }
 132
 133
 134 char *
 135 _SC_cfstring_to_cstring(CFStringRef cfstr, char *buf, CFIndex bufLen, CFStringEncoding encoding)
 136 {
 137         return _SC_cfstring_to_cstring_ext(cfstr, buf, bufLen, encoding, 0, NULL);
 138
 139 }
 140
 141
 142 void
 143 _SC_sockaddr_to_string(const struct sockaddr *address, char *buf, size_t bufLen)
 144 {
 145         union {
 146                 const struct sockaddr           *sa;
 147                 const struct sockaddr_in        *sin;
 148                 const struct sockaddr_in6       *sin6;
 149                 const struct sockaddr_dl        *sdl;
 150         } addr;
 151
 152         addr.sa = address;
 153
 154         memset(buf, 0, bufLen);
 155         switch (address->sa_family) {
 156                 case AF_INET :
 157                         (void)inet_ntop(addr.sin->sin_family,
 158                                         &addr.sin->sin_addr,
 159                                         buf,
 160                                         (socklen_t)bufLen);
 161                         break;
 162                 case AF_INET6 : {
 163                         (void)inet_ntop(addr.sin6->sin6_family,
 164                                         &addr.sin6->sin6_addr,
 165                                         buf,
 166                                         (socklen_t)bufLen);
 167                         if (addr.sin6->sin6_scope_id != 0) {
 168                                 size_t  n;
 169
 170                                 n = strlen(buf);
 171                                 if ((n+IF_NAMESIZE+1) <= bufLen) {
 172                                         buf[n++] = '%';
 173                                         if_indextoname(addr.sin6->sin6_scope_id, &buf[n]);
 174                                 }
 175                         }
 176                         break;
 177                 }
 178                 default :
 179                         snprintf(buf, bufLen, "unexpected address family %d", address->sa_family);
 180                         break;
 181         }
 182
 183         return;
 184 }
 185
 186
 187 struct sockaddr *
 188 _SC_string_to_sockaddr(const char *str, sa_family_t af, void *buf, size_t bufLen)
 189 {
 190         union {
 191                 void                    *buf;
 192                 struct sockaddr         *sa;
 193                 struct sockaddr_in      *sin;
 194                 struct sockaddr_in6     *sin6;
 195         } addr;
 196
 197         if (buf == NULL) {
 198                 bufLen = sizeof(struct sockaddr_storage);
 199                 addr.buf = CFAllocatorAllocate(NULL, bufLen, 0);
 200         } else {
 201                 addr.buf = buf;
 202         }
 203
 204         memset(addr.buf, 0, bufLen);
 205         if (((af == AF_UNSPEC) || (af == AF_INET)) &&
 206             (bufLen >= sizeof(struct sockaddr_in)) &&
 207             inet_aton(str, &addr.sin->sin_addr) == 1) {
 208                 // if IPv4 address
 209                 addr.sin->sin_len    = sizeof(struct sockaddr_in);
 210                 addr.sin->sin_family = AF_INET;
 211         } else if (((af == AF_UNSPEC) || (af == AF_INET6)) &&
 212                    (bufLen >= sizeof(struct sockaddr_in6)) &&
 213                    inet_pton(AF_INET6, str, &addr.sin6->sin6_addr) == 1) {
 214                 // if IPv6 address
 215                 char    *p;
 216
 217                 addr.sin6->sin6_len    = sizeof(struct sockaddr_in6);
 218                 addr.sin6->sin6_family = AF_INET6;
 219
 220                 p = strchr(str, '%');
 221                 if (p != NULL) {
 222                         addr.sin6->sin6_scope_id = if_nametoindex(p + 1);
 223                 }
 224
 225                 if (IN6_IS_ADDR_LINKLOCAL(&addr.sin6->sin6_addr) ||
 226                     IN6_IS_ADDR_MC_LINKLOCAL(&addr.sin6->sin6_addr)) {
 227                         uint16_t        if_index;
 228
 229                         if_index = ntohs(addr.sin6->sin6_addr.__u6_addr.__u6_addr16[1]);
 230                         addr.sin6->sin6_addr.__u6_addr.__u6_addr16[1] = 0;
 231                         if (addr.sin6->sin6_scope_id == 0) {
 232                                 // use the scope id that was embedded in the [link local] IPv6 address
 233                                 addr.sin6->sin6_scope_id = if_index;
 234                         }
 235                 }
 236         } else {
 237                 if (addr.buf != buf) {
 238                         CFAllocatorDeallocate(NULL, addr.buf);
 239                 }
 240                 addr.buf = NULL;
 241         }
 242
 243         return addr.sa;
 244 }
 245
 246
 247 void
 248 _SC_sendMachMessage(mach_port_t port, mach_msg_id_t msg_id)
 249 {
 250         mach_msg_empty_send_t   msg;
 251         mach_msg_option_t       options;
 252         kern_return_t           status;
 253
 254         memset(&msg, 0, sizeof(msg));
 255         msg.header.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, 0);
 256         msg.header.msgh_size = sizeof(msg);
 257         msg.header.msgh_remote_port = port;
 258         msg.header.msgh_local_port = MACH_PORT_NULL;
 259         msg.header.msgh_id = msg_id;
 260         options = MACH_SEND_TIMEOUT;
 261         status = mach_msg(&msg.header,                  /* msg */
 262                           MACH_SEND_MSG|options,        /* options */
 263                           msg.header.msgh_size,         /* send_size */
 264                           0,                            /* rcv_size */
 265                           MACH_PORT_NULL,               /* rcv_name */
 266                           0,                            /* timeout */
 267                           MACH_PORT_NULL);              /* notify */
 268         if ((status == MACH_SEND_INVALID_DEST) || (status == MACH_SEND_TIMED_OUT)) {
 269                 mach_msg_destroy(&msg.header);
 270         }
 271
 272         return;
 273 }
 274
 275
 276 CFStringRef
 277 _SC_trimDomain(CFStringRef domain)
 278 {
 279         CFIndex length;
 280
 281         if (!isA_CFString(domain)) {
 282                 return NULL;
 283         }
 284
 285         // remove any leading/trailing dots
 286         length = CFStringGetLength(domain);
 287         if ((length > 0) &&
 288             (CFStringFindWithOptions(domain,
 289                                      CFSTR("."),
 290                                      CFRangeMake(0, 1),
 291                                      kCFCompareAnchored,
 292                                      NULL) ||
 293              CFStringFindWithOptions(domain,
 294                                      CFSTR("."),
 295                                      CFRangeMake(0, length),
 296                                      kCFCompareAnchored|kCFCompareBackwards,
 297                                      NULL))
 298             ) {
 299              CFMutableStringRef trimmed;
 300
 301              trimmed = CFStringCreateMutableCopy(NULL, 0, domain);
 302              CFStringTrim(trimmed, CFSTR("."));
 303              domain = (CFStringRef)trimmed;
 304              length = CFStringGetLength(domain);
 305         } else {
 306              CFRetain(domain);
 307         }
 308
 309         if (length == 0) {
 310                 CFRelease(domain);
 311                 domain = NULL;
 312         }
 313
 314         return domain;
 315 }
 316
 317
 318 CFStringRef
 319 _SC_hw_model(Boolean trim)
 320 {
 321         static CFStringRef      model           = NULL;
 322         static CFStringRef      model_trimmed   = NULL;
 323         static dispatch_once_t  once;
 324
 325         dispatch_once(&once, ^{
 326                 char    *cp;
 327                 char    hwModel[64];
 328                 int     mib[]           = { CTL_HW, HW_MODEL };
 329                 size_t  n               = sizeof(hwModel);
 330                 int     ret;
 331
 332                 // get HW model name
 333                 memset(&hwModel, 0, sizeof(hwModel));
 334                 ret = sysctl(mib, sizeof(mib) / sizeof(mib[0]), &hwModel, &n, NULL, 0);
 335                 if (ret != 0) {
 336                         SC_log(LOG_NOTICE, "sysctl() CTL_HW/HW_MODEL failed: %s", strerror(errno));
 337                         return;
 338                 }
 339                 hwModel[sizeof(hwModel) - 1] = '\0';
 340                 model = CFStringCreateWithCString(NULL, hwModel, kCFStringEncodingASCII);
 341
 342                 // and the "trimmed" name
 343                 // ... remove everything after (and including) a comma
 344                 // ... and then any trailing digits
 345                 cp = index(hwModel, ',');
 346                 if (cp != NULL) {
 347                         *cp = '\0';
 348                 }
 349                 n = strlen(hwModel) - 1;
 350                 while (n > 0) {
 351                         if (!isdigit(hwModel[n])) {
 352                                 break;
 353                         }
 354                         hwModel[n--] = '\0';
 355                 }
 356                 model_trimmed = CFStringCreateWithCString(NULL, hwModel, kCFStringEncodingASCII);
 357         });
 358
 359         return trim ? model_trimmed : model;
 360 }
 361
 362
 363 #pragma mark -
 364 #pragma mark Serialization
 365
 366
 367 static kern_return_t
 368 __CFDataCopyVMData(CFDataRef data, void **dataRef, CFIndex *dataLen)
 369 {
 370         kern_return_t           kr;
 371
 372         vm_address_t    vm_address;
 373         vm_size_t       vm_size;
 374
 375         vm_address = (vm_address_t)CFDataGetBytePtr(data);
 376         vm_size    = (vm_size_t)CFDataGetLength(data);
 377         kr = vm_allocate(mach_task_self(), &vm_address, vm_size, VM_FLAGS_ANYWHERE);
 378         if (kr != KERN_SUCCESS) {
 379                 *dataRef = NULL;
 380                 *dataLen = 0;
 381                 return kr;
 382         }
 383
 384         memcpy((void *)vm_address, (char *)CFDataGetBytePtr(data), vm_size);
 385         *dataRef = (void *)vm_address;
 386         *dataLen = vm_size;
 387
 388         return kr;
 389 }
 390
 391
 392 Boolean
 393 _SCSerialize(CFPropertyListRef obj, CFDataRef *xml, void **dataRef, CFIndex *dataLen)
 394 {
 395         CFDataRef               myXml;
 396
 397         if ((xml == NULL) && ((dataRef == NULL) || (dataLen == NULL))) {
 398                 /* if not keeping track of allocated space */
 399                 return FALSE;
 400         }
 401
 402         myXml = CFPropertyListCreateData(NULL,
 403                                          obj,
 404                                          kCFPropertyListBinaryFormat_v1_0,
 405                                          0,
 406                                          NULL);
 407         if (myXml == NULL) {
 408                 SC_log(LOG_NOTICE, "CFPropertyListCreateData() failed");
 409                 if (xml != NULL) {
 410                         *xml = NULL;
 411                 }
 412                 if ((dataRef != NULL) && (dataLen != NULL)) {
 413                         *dataLen = 0;
 414                         *dataRef = NULL;
 415                 }
 416                 return FALSE;
 417         }
 418
 419         if (xml != NULL) {
 420                 *xml = myXml;
 421                 if ((dataRef != NULL) && (dataLen != NULL)) {
 422                         *dataRef = (void *)CFDataGetBytePtr(myXml);
 423                         *dataLen = CFDataGetLength(myXml);
 424                 }
 425         } else {
 426                 kern_return_t   kr;
 427
 428                 kr = __CFDataCopyVMData(myXml, dataRef, dataLen);
 429                 CFRelease(myXml);
 430                 if (kr != KERN_SUCCESS) {
 431                         SC_log(LOG_NOTICE, "__CFDataCreateVMData() failed: %s", mach_error_string(kr));
 432                         return FALSE;
 433                 }
 434         }
 435
 436         return TRUE;
 437 }
 438
 439
 440 Boolean
 441 _SCUnserialize(CFPropertyListRef *obj, CFDataRef xml, void *dataRef, CFIndex dataLen)
 442 {
 443         CFErrorRef      error   = NULL;
 444
 445         if (xml == NULL) {
 446                 kern_return_t   status;
 447
 448                 xml = CFDataCreateWithBytesNoCopy(NULL, (void *)dataRef, dataLen, kCFAllocatorNull);
 449                 *obj = CFPropertyListCreateWithData(NULL, xml, kCFPropertyListImmutable, NULL, &error);
 450                 CFRelease(xml);
 451
 452                 status = vm_deallocate(mach_task_self(), (vm_address_t)dataRef, dataLen);
 453                 if (status != KERN_SUCCESS) {
 454                         SC_log(LOG_NOTICE, "vm_deallocate() failed: %s", mach_error_string(status));
 455                         /* non-fatal???, proceed */
 456                 }
 457         } else {
 458                 *obj = CFPropertyListCreateWithData(NULL, xml, kCFPropertyListImmutable, NULL, &error);
 459         }
 460
 461         if (*obj == NULL) {
 462                 if (error != NULL) {
 463                         SC_log(LOG_NOTICE, "CFPropertyListCreateWithData() failed: %@", error);
 464                         CFRelease(error);
 465                 }
 466                 _SCErrorSet(kSCStatusFailed);
 467                 return FALSE;
 468         }
 469
 470         return TRUE;
 471 }
 472
 473
 474 Boolean
 475 _SCSerializeString(CFStringRef str, CFDataRef *data, void **dataRef, CFIndex *dataLen)
 476 {
 477         CFDataRef       myData;
 478
 479         if (!isA_CFString(str)) {
 480                 /* if not a CFString */
 481                 return FALSE;
 482         }
 483
 484         if ((data == NULL) && ((dataRef == NULL) || (dataLen == NULL))) {
 485                 /* if not keeping track of allocated space */
 486                 return FALSE;
 487         }
 488
 489         myData = CFStringCreateExternalRepresentation(NULL, str, kCFStringEncodingUTF8, 0);
 490         if (myData == NULL) {
 491                 SC_log(LOG_NOTICE, "CFStringCreateExternalRepresentation() failed");
 492                 if (data != NULL) {
 493                         *data = NULL;
 494                 }
 495                 if ((dataRef != NULL) && (dataLen != NULL)) {
 496                         *dataRef = NULL;
 497                         *dataLen = 0;
 498                 }
 499                 return FALSE;
 500         }
 501
 502         if (data != NULL) {
 503                 *data = myData;
 504                 if ((dataRef != NULL) && (dataLen != NULL)) {
 505                         *dataRef = (void *)CFDataGetBytePtr(myData);
 506                         *dataLen = CFDataGetLength(myData);
 507                 }
 508         } else {
 509                 kern_return_t   kr;
 510
 511                 kr = __CFDataCopyVMData(myData, dataRef, dataLen);
 512                 CFRelease(myData);
 513                 if (kr != KERN_SUCCESS) {
 514                         SC_log(LOG_NOTICE, "__CFDataCreateVMData() failed: %s", mach_error_string(kr));
 515                         return FALSE;
 516                 }
 517         }
 518
 519         return TRUE;
 520 }
 521
 522
 523 Boolean
 524 _SCUnserializeString(CFStringRef *str, CFDataRef utf8, void *dataRef, CFIndex dataLen)
 525 {
 526         if (utf8 == NULL) {
 527                 kern_return_t   status;
 528
 529                 utf8 = CFDataCreateWithBytesNoCopy(NULL, dataRef, dataLen, kCFAllocatorNull);
 530                 *str = CFStringCreateFromExternalRepresentation(NULL, utf8, kCFStringEncodingUTF8);
 531                 CFRelease(utf8);
 532
 533                 status = vm_deallocate(mach_task_self(), (vm_address_t)dataRef, dataLen);
 534                 if (status != KERN_SUCCESS) {
 535                         SC_log(LOG_NOTICE, "vm_deallocate() failed: %s", mach_error_string(status));
 536                         /* non-fatal???, proceed */
 537                 }
 538         } else {
 539                 *str = CFStringCreateFromExternalRepresentation(NULL, utf8, kCFStringEncodingUTF8);
 540         }
 541
 542         if (*str == NULL) {
 543                 SC_log(LOG_NOTICE, "CFStringCreateFromExternalRepresentation() failed");
 544                 return FALSE;
 545         }
 546
 547         return TRUE;
 548 }
 549
 550
 551 Boolean
 552 _SCSerializeData(CFDataRef data, void **dataRef, CFIndex *dataLen)
 553 {
 554         kern_return_t   kr;
 555
 556         if (!isA_CFData(data)) {
 557                 /* if not a CFData */
 558                 return FALSE;
 559         }
 560
 561         kr = __CFDataCopyVMData(data, dataRef, dataLen);
 562         if (kr != KERN_SUCCESS) {
 563                 SC_log(LOG_NOTICE, "__CFDataCreateVMData() failed: %s", mach_error_string(kr));
 564                 return FALSE;
 565         }
 566
 567         return TRUE;
 568 }
 569
 570
 571 Boolean
 572 _SCUnserializeData(CFDataRef *data, void *dataRef, CFIndex dataLen)
 573 {
 574         kern_return_t           status;
 575
 576         *data = CFDataCreate(NULL, dataRef, dataLen);
 577         status = vm_deallocate(mach_task_self(), (vm_address_t)dataRef, dataLen);
 578         if (status != KERN_SUCCESS) {
 579                 SC_log(LOG_NOTICE, "vm_deallocate() failed: %s", mach_error_string(status));
 580                 _SCErrorSet(kSCStatusFailed);
 581                 return FALSE;
 582         }
 583
 584         return TRUE;
 585 }
 586
 587
 588 CF_RETURNS_RETAINED CFDictionaryRef
 589 _SCSerializeMultiple(CFDictionaryRef dict)
 590 {
 591         CFIndex                 i;
 592         const void *            keys_q[N_QUICK];
 593         const void **           keys            = keys_q;
 594         CFIndex                 nElements;
 595         CFDictionaryRef         newDict         = NULL;
 596         const void *            pLists_q[N_QUICK];
 597         const void **           pLists          = pLists_q;
 598         const void *            values_q[N_QUICK];
 599         const void **           values          = values_q;
 600
 601         nElements = CFDictionaryGetCount(dict);
 602         if (nElements > 0) {
 603                 if (nElements > (CFIndex)(sizeof(keys_q) / sizeof(CFTypeRef))) {
 604                         keys   = CFAllocatorAllocate(NULL, nElements * sizeof(CFTypeRef), 0);
 605                         values = CFAllocatorAllocate(NULL, nElements * sizeof(CFTypeRef), 0);
 606                         pLists = CFAllocatorAllocate(NULL, nElements * sizeof(CFDataRef), 0);
 607                 }
 608                 memset(pLists, 0, nElements * sizeof(CFDataRef));
 609
 610                 CFDictionaryGetKeysAndValues(dict, keys, values);
 611                 for (i = 0; i < nElements; i++) {
 612                         pLists[i] = NULL;
 613                         if (!_SCSerialize((CFPropertyListRef)values[i], (CFDataRef *)&pLists[i], NULL, NULL)) {
 614                                 goto done;
 615                         }
 616                 }
 617         }
 618
 619         newDict = CFDictionaryCreate(NULL,
 620                                      keys,
 621                                      pLists,
 622                                      nElements,
 623                                      &kCFTypeDictionaryKeyCallBacks,
 624                                      &kCFTypeDictionaryValueCallBacks);
 625
 626     done :
 627
 628         if (nElements > 0) {
 629                 for (i = 0; i < nElements; i++) {
 630                         if (pLists[i] != NULL)  CFRelease((CFDataRef)pLists[i]);
 631                 }
 632
 633                 if (keys != keys_q) {
 634                         CFAllocatorDeallocate(NULL, keys);
 635                         CFAllocatorDeallocate(NULL, values);
 636                         CFAllocatorDeallocate(NULL, pLists);
 637                 }
 638         }
 639
 640         return newDict;
 641 }
 642
 643
 644 CF_RETURNS_RETAINED
 645 CFDictionaryRef
 646 _SCUnserializeMultiple(CFDictionaryRef dict)
 647 {
 648         const void *            keys_q[N_QUICK];
 649         const void **           keys            = keys_q;
 650         CFIndex                 nElements;
 651         CFDictionaryRef         newDict         = NULL;
 652         const void *            pLists_q[N_QUICK];
 653         const void **           pLists          = pLists_q;
 654         const void *            values_q[N_QUICK];
 655         const void **           values          = values_q;
 656
 657         nElements = CFDictionaryGetCount(dict);
 658         if (nElements > 0) {
 659                 CFIndex i;
 660
 661                 if (nElements > (CFIndex)(sizeof(keys_q) / sizeof(CFTypeRef))) {
 662                         keys   = CFAllocatorAllocate(NULL, nElements * sizeof(CFTypeRef), 0);
 663                         values = CFAllocatorAllocate(NULL, nElements * sizeof(CFTypeRef), 0);
 664                         pLists = CFAllocatorAllocate(NULL, nElements * sizeof(CFTypeRef), 0);
 665                 }
 666                 memset(pLists, 0, nElements * sizeof(CFTypeRef));
 667
 668                 CFDictionaryGetKeysAndValues(dict, keys, values);
 669                 for (i = 0; i < nElements; i++) {
 670                         if (!_SCUnserialize((CFPropertyListRef *)&pLists[i], values[i], NULL, 0)) {
 671                                 goto done;
 672                         }
 673                 }
 674         }
 675
 676         newDict = CFDictionaryCreate(NULL,
 677                                      keys,
 678                                      pLists,
 679                                      nElements,
 680                                      &kCFTypeDictionaryKeyCallBacks,
 681                                      &kCFTypeDictionaryValueCallBacks);
 682
 683     done :
 684
 685         if (nElements > 0) {
 686                 CFIndex i;
 687
 688                 for (i = 0; i < nElements; i++) {
 689                         if (pLists[i])  CFRelease(pLists[i]);
 690                 }
 691
 692                 if (keys != keys_q) {
 693                         CFAllocatorDeallocate(NULL, keys);
 694                         CFAllocatorDeallocate(NULL, values);
 695                         CFAllocatorDeallocate(NULL, pLists);
 696                 }
 697         }
 698
 699         return newDict;
 700 }
 701
 702
 703 #pragma mark -
 704
 705
 706 CFPropertyListRef
 707 _SCCreatePropertyListFromResource(CFURLRef url)
 708 {
 709         CFDictionaryRef dict            = NULL;
 710         SInt64          fileLen         = 0;
 711         Boolean         ok;
 712         CFReadStreamRef readStream;
 713         CFNumberRef     val             = NULL;
 714
 715         if (!CFURLCopyResourcePropertyForKey(url, kCFURLFileSizeKey, &val, NULL) ||
 716             (val == NULL)) {
 717                 // if size not available
 718                 SC_log(LOG_NOTICE, "CFURLCopyResourcePropertyForKey() size not available: %@", url);
 719                 return NULL;
 720         }
 721
 722         ok = CFNumberGetValue(val, kCFNumberSInt64Type, &fileLen);
 723         CFRelease(val);
 724         if (!ok || (fileLen == 0)) {
 725                 // if empty or size too large
 726                 SC_log(LOG_INFO, "_SCCreatePropertyListFromResource() improper size: %@", url);
 727                 return NULL;
 728         }
 729
 730         readStream = CFReadStreamCreateWithFile(NULL, url);
 731         if (readStream != NULL) {
 732                 if (CFReadStreamOpen(readStream)) {
 733                         UInt8           *buffer;
 734                         CFIndex         dataLen;
 735
 736                         buffer = CFAllocatorAllocate(NULL, (CFIndex)fileLen, 0);
 737                         dataLen = CFReadStreamRead(readStream, buffer, (CFIndex)fileLen);
 738                         if (dataLen == (CFIndex)fileLen) {
 739                                 CFDataRef       data;
 740
 741                                 data = CFDataCreateWithBytesNoCopy(NULL, buffer, (CFIndex)fileLen, kCFAllocatorNull);
 742                                 if (data != NULL) {
 743                                         dict = CFPropertyListCreateWithData(NULL,
 744                                                                             data,
 745                                                                             kCFPropertyListImmutable,
 746                                                                             NULL,
 747                                                                             NULL);
 748                                         CFRelease(data);
 749                                 }
 750                         }
 751                         CFAllocatorDeallocate(NULL, buffer);
 752                         CFReadStreamClose(readStream);
 753                 }
 754                 CFRelease(readStream);
 755         }
 756
 757         return dict;
 758 }
 759
 760
 761 #pragma mark -
 762 #pragma mark CFRunLoop scheduling
 763
 764
 765 __private_extern__ void
 766 _SC_signalRunLoop(CFTypeRef obj, CFRunLoopSourceRef rls, CFArrayRef rlList)
 767 {
 768         CFRunLoopRef    rl      = NULL;
 769         CFRunLoopRef    rl1     = NULL;
 770         CFIndex         i;
 771         CFIndex         n       = CFArrayGetCount(rlList);
 772
 773         if (n == 0) {
 774                 return;
 775         }
 776
 777         /* get first runLoop for this object */
 778         for (i = 0; i < n; i += 3) {
 779                 if (!CFEqual(obj, CFArrayGetValueAtIndex(rlList, i))) {
 780                         continue;
 781                 }
 782
 783                 rl1 = (CFRunLoopRef)CFArrayGetValueAtIndex(rlList, i+1);
 784                 break;
 785         }
 786
 787         if (rl1 == NULL) {
 788                 /* if not scheduled */
 789                 return;
 790         }
 791
 792         /* check if we have another runLoop for this object */
 793         rl = rl1;
 794         for (i = i+3; i < n; i += 3) {
 795                 CFRunLoopRef    rl2;
 796
 797                 if (!CFEqual(obj, CFArrayGetValueAtIndex(rlList, i))) {
 798                         continue;
 799                 }
 800
 801                 rl2 = (CFRunLoopRef)CFArrayGetValueAtIndex(rlList, i+1);
 802                 if (!CFEqual(rl1, rl2)) {
 803                         /* we've got more than one runLoop */
 804                         rl = NULL;
 805                         break;
 806                 }
 807         }
 808
 809         if (rl != NULL) {
 810                 /* if we only have one runLoop */
 811                 CFRunLoopWakeUp(rl);
 812                 return;
 813         }
 814
 815         /* more than one different runLoop, so we must pick one */
 816         for (i = 0; i < n; i+=3) {
 817                 CFStringRef     rlMode;
 818
 819                 if (!CFEqual(obj, CFArrayGetValueAtIndex(rlList, i))) {
 820                         continue;
 821                 }
 822
 823                 rl     = (CFRunLoopRef)CFArrayGetValueAtIndex(rlList, i+1);
 824                 rlMode = CFRunLoopCopyCurrentMode(rl);
 825                 if (rlMode != NULL) {
 826                         Boolean waiting;
 827
 828                         waiting = (CFRunLoopIsWaiting(rl) && CFRunLoopContainsSource(rl, rls, rlMode));
 829                         CFRelease(rlMode);
 830                         if (waiting) {
 831                                 /* we've found a runLoop that's "ready" */
 832                                 CFRunLoopWakeUp(rl);
 833                                 return;
 834                         }
 835                 }
 836         }
 837
 838         /* didn't choose one above, so choose first */
 839         CFRunLoopWakeUp(rl1);
 840         return;
 841 }
 842
 843
 844 __private_extern__ Boolean
 845 _SC_isScheduled(CFTypeRef obj, CFRunLoopRef runLoop, CFStringRef runLoopMode, CFMutableArrayRef rlList)
 846 {
 847         CFIndex i;
 848         CFIndex n       = CFArrayGetCount(rlList);
 849
 850         for (i = 0; i < n; i += 3) {
 851                 if ((obj != NULL)         && !CFEqual(obj,         CFArrayGetValueAtIndex(rlList, i))) {
 852                         continue;
 853                 }
 854                 if ((runLoop != NULL)     && !CFEqual(runLoop,     CFArrayGetValueAtIndex(rlList, i+1))) {
 855                         continue;
 856                 }
 857                 if ((runLoopMode != NULL) && !CFEqual(runLoopMode, CFArrayGetValueAtIndex(rlList, i+2))) {
 858                         continue;
 859                 }
 860                 return TRUE;
 861         }
 862
 863         return FALSE;
 864 }
 865
 866
 867 __private_extern__ void
 868 _SC_schedule(CFTypeRef obj, CFRunLoopRef runLoop, CFStringRef runLoopMode, CFMutableArrayRef rlList)
 869 {
 870         CFArrayAppendValue(rlList, obj);
 871         CFArrayAppendValue(rlList, runLoop);
 872         CFArrayAppendValue(rlList, runLoopMode);
 873
 874         return;
 875 }
 876
 877
 878 __private_extern__ Boolean
 879 _SC_unschedule(CFTypeRef obj, CFRunLoopRef runLoop, CFStringRef runLoopMode, CFMutableArrayRef rlList, Boolean all)
 880 {
 881         CFIndex i       = 0;
 882         Boolean found   = FALSE;
 883         CFIndex n       = CFArrayGetCount(rlList);
 884
 885         while (i < n) {
 886                 if ((obj != NULL)         && !CFEqual(obj,         CFArrayGetValueAtIndex(rlList, i))) {
 887                         i += 3;
 888                         continue;
 889                 }
 890                 if ((runLoop != NULL)     && !CFEqual(runLoop,     CFArrayGetValueAtIndex(rlList, i+1))) {
 891                         i += 3;
 892                         continue;
 893                 }
 894                 if ((runLoopMode != NULL) && !CFEqual(runLoopMode, CFArrayGetValueAtIndex(rlList, i+2))) {
 895                         i += 3;
 896                         continue;
 897                 }
 898
 899                 found = TRUE;
 900
 901                 CFArrayRemoveValueAtIndex(rlList, i + 2);
 902                 CFArrayRemoveValueAtIndex(rlList, i + 1);
 903                 CFArrayRemoveValueAtIndex(rlList, i);
 904
 905                 if (!all) {
 906                         return found;
 907                 }
 908
 909                 n -= 3;
 910         }
 911
 912         return found;
 913 }
 914
 915
 916 #pragma mark -
 917 #pragma mark Bundle
 918
 919
 920 #define SYSTEMCONFIGURATION_BUNDLE_ID           CFSTR("com.apple.SystemConfiguration")
 921 #define SYSTEMCONFIGURATION_FRAMEWORK_PATH_LEN  (sizeof(SYSTEMCONFIGURATION_FRAMEWORK_PATH) - 1)
 922
 923 #define SUFFIX_SYM                              "~sym"
 924 #define SUFFIX_SYM_LEN                          (sizeof(SUFFIX_SYM) - 1)
 925
 926 #define SUFFIX_DST                              "~dst"
 927
 928
 929 CFBundleRef
 930 _SC_CFBundleGet(void)
 931 {
 932         static CFBundleRef      bundle  = NULL;
 933         char                    *env;
 934         size_t                  len;
 935         CFURLRef                url;
 936
 937         if (bundle != NULL) {
 938                 goto done;
 939         }
 940
 941         bundle = CFBundleGetBundleWithIdentifier(SYSTEMCONFIGURATION_BUNDLE_ID);
 942         if (bundle != NULL) {
 943                 CFRetain(bundle);       // we want to hold a reference to the bundle
 944                 goto done;
 945         } else {
 946                 SC_log(LOG_NOTICE, "could not get CFBundle for \"%@\". Trying harder...",
 947                        SYSTEMCONFIGURATION_BUNDLE_ID);
 948         }
 949
 950         // if appropriate (e.g. when debugging), try a bit harder
 951
 952         env = getenv("DYLD_FRAMEWORK_PATH");
 953         len = (env != NULL) ? strlen(env) : 0;
 954
 955         if (len > 0) {  /* We are debugging */
 956
 957                 // trim any trailing slashes
 958                 while (len > 1) {
 959                         if (env[len - 1] != '/') {
 960                                 break;
 961                         }
 962                         len--;
 963                 }
 964
 965                 // if DYLD_FRAMEWORK_PATH is ".../xxx~sym" than try ".../xxx~dst"
 966                 if ((len > SUFFIX_SYM_LEN) &&
 967                     (strncmp(&env[len - SUFFIX_SYM_LEN], SUFFIX_SYM, SUFFIX_SYM_LEN) == 0) &&
 968                     ((len + SYSTEMCONFIGURATION_FRAMEWORK_PATH_LEN) < MAXPATHLEN)) {
 969                         char            path[MAXPATHLEN];
 970
 971                         strlcpy(path, env, sizeof(path));
 972                         strlcpy(&path[len - SUFFIX_SYM_LEN], SUFFIX_DST, sizeof(path) - (len - SUFFIX_SYM_LEN));
 973                         strlcat(&path[len], SYSTEMCONFIGURATION_FRAMEWORK_PATH, sizeof(path) - len);
 974
 975                         url = CFURLCreateFromFileSystemRepresentation(NULL,
 976                                                                       (UInt8 *)path,
 977                                                                       len + SYSTEMCONFIGURATION_FRAMEWORK_PATH_LEN,
 978                                                                       TRUE);
 979                         bundle = CFBundleCreate(NULL, url);
 980                         CFRelease(url);
 981                 }
 982         }
 983
 984         if (bundle == NULL) { /* Try a more "direct" route to get the bundle */
 985
 986                 url = CFURLCreateWithFileSystemPath(NULL,
 987                                                     CFSTR(SYSTEMCONFIGURATION_FRAMEWORK_PATH),
 988                                                     kCFURLPOSIXPathStyle,
 989                                                     TRUE);
 990
 991                 bundle = CFBundleCreate(NULL, url);
 992                 CFRelease(url);
 993         }
 994
 995         if (bundle == NULL) {
 996                 SC_log(LOG_ERR, "could not get CFBundle for \"%@\"", SYSTEMCONFIGURATION_BUNDLE_ID);
 997         }
 998
 999 done:
1000         return bundle;
1001 }
1002
1003
1004 /*
1005  * cachedInfo
1006  *   <dict>
1007  *      <key>bundleID-tableName</key>
1008  *      <dict>
1009  *        ... property list from non-localized bundle URL
1010  *      </dict>
1011  *   </dict>
1012  */
1013 static CFMutableDictionaryRef   cachedInfo      = NULL;
1014
1015
1016 static dispatch_queue_t
1017 _SC_CFBundleCachedInfoQueue()
1018 {
1019         static dispatch_once_t  once;
1020         static dispatch_queue_t q;
1021
1022         dispatch_once(&once, ^{
1023                 q = dispatch_queue_create("_SC_CFBundleCachedInfo", NULL);
1024         });
1025
1026         return q;
1027 }
1028
1029
1030 static CFStringRef
1031 _SC_CFBundleCachedInfoCopyTableKey(CFBundleRef bundle, CFStringRef tableName)
1032 {
1033         CFStringRef     bundleID;
1034         CFStringRef     tableKey;
1035
1036         bundleID = CFBundleGetIdentifier(bundle);
1037         tableKey = CFStringCreateWithFormat(NULL, NULL, CFSTR("%@: %@"), bundleID, tableName);
1038         return tableKey;
1039 }
1040
1041
1042 static CFDictionaryRef
1043 _SC_CFBundleCachedInfoCopyTable(CFBundleRef bundle, CFStringRef tableName)
1044 {
1045         __block CFDictionaryRef         dict    = NULL;
1046
1047         dispatch_sync(_SC_CFBundleCachedInfoQueue(), ^{
1048                 if (cachedInfo != NULL) {
1049                         CFStringRef     tableKey;
1050
1051                         tableKey = _SC_CFBundleCachedInfoCopyTableKey(bundle, tableName);
1052                         dict = CFDictionaryGetValue(cachedInfo, tableKey);
1053                         if (dict != NULL) {
1054                                 CFRetain(dict);
1055                         }
1056                         CFRelease(tableKey);
1057                 }
1058         });
1059
1060         return dict;
1061 }
1062
1063
1064 static void
1065 _SC_CFBundleCachedInfoSaveTable(CFBundleRef bundle, CFStringRef tableName, CFDictionaryRef table)
1066 {
1067
1068         dispatch_sync(_SC_CFBundleCachedInfoQueue(), ^{
1069                 CFStringRef     tableKey;
1070
1071                 tableKey = _SC_CFBundleCachedInfoCopyTableKey(bundle, tableName);
1072                 SC_log(LOG_DEBUG, "Caching %@", tableKey);
1073
1074                 if (cachedInfo == NULL) {
1075                         cachedInfo = CFDictionaryCreateMutable(NULL,
1076                                                                0,
1077                                                                &kCFTypeDictionaryKeyCallBacks,
1078                                                                &kCFTypeDictionaryValueCallBacks);
1079                 }
1080                 CFDictionarySetValue(cachedInfo, tableKey, table);
1081                 CFRelease(tableKey);
1082         });
1083
1084         return;
1085 }
1086
1087
1088 CFStringRef
1089 _SC_CFBundleCopyNonLocalizedString(CFBundleRef bundle, CFStringRef key, CFStringRef value, CFStringRef tableName)
1090 {
1091         CFStringRef     str     = NULL;
1092         CFDictionaryRef table   = NULL;
1093         CFURLRef        url;
1094
1095         if ((tableName == NULL) || CFEqual(tableName, CFSTR(""))) {
1096                 tableName = CFSTR("Localizable");
1097         }
1098
1099         table = _SC_CFBundleCachedInfoCopyTable(bundle, tableName);
1100         if (table == NULL) {
1101                 url = CFBundleCopyResourceURLForLocalization(bundle,
1102                                                              tableName,
1103                                                              CFSTR("strings"),
1104                                                              NULL,
1105                                                              CFSTR("en"));
1106                 if (url != NULL) {
1107                         table = _SCCreatePropertyListFromResource(url);
1108                         CFRelease(url);
1109                         if (table != NULL) {
1110                                 _SC_CFBundleCachedInfoSaveTable(bundle, tableName, table);
1111                         }
1112                 } else {
1113                         SC_log(LOG_ERR, "failed to get resource url: {bundle:%@, table: %@}", bundle, tableName);
1114                 }
1115         }
1116
1117         if (table != NULL) {
1118                 if (isA_CFDictionary(table)) {
1119                         str = CFDictionaryGetValue(table, key);
1120                         if (str != NULL) {
1121                                 CFRetain(str);
1122                         }
1123                 }
1124
1125                 CFRelease(table);
1126         }
1127
1128         if (str == NULL) {
1129                 str = CFRetain(value);
1130         }
1131
1132         return str;
1133 }
1134
1135
1136 #pragma mark -
1137 #pragma mark Mach port / CFMachPort management
1138
1139
1140 CFMachPortRef
1141 _SC_CFMachPortCreateWithPort(const char         *portDescription,
1142                              mach_port_t        portNum,
1143                              CFMachPortCallBack callout,
1144                              CFMachPortContext  *context)
1145 {
1146         CFMachPortRef   port;
1147         Boolean         shouldFree      = FALSE;
1148
1149         port = CFMachPortCreateWithPort(NULL, portNum, callout, context, &shouldFree);
1150         if ((port == NULL) || shouldFree) {
1151                 char            *crash_info;
1152                 CFStringRef     err;
1153
1154                 SC_log(LOG_NOTICE, "%s: CFMachPortCreateWithPort() failed , port = %p",
1155                        portDescription,
1156                        (void *)(uintptr_t)portNum);
1157                 if (port != NULL) {
1158                         err = CFStringCreateWithFormat(NULL, NULL,
1159                                                        CFSTR("%s: CFMachPortCreateWithPort recycled, [old] port = %@"),
1160                                                        portDescription, port);
1161                 } else {
1162                         err = CFStringCreateWithFormat(NULL, NULL,
1163                                                        CFSTR("%s: CFMachPortCreateWithPort returned NULL"),
1164                                                        portDescription);
1165                 }
1166                 crash_info = _SC_cfstring_to_cstring(err, NULL, 0, kCFStringEncodingASCII);
1167                 CFRelease(err);
1168
1169                 err = CFStringCreateWithFormat(NULL,
1170                                                NULL,
1171                                                CFSTR("A recycled mach_port has been detected by \"%s\"."),
1172                                                getprogname());
1173                 _SC_crash(crash_info, CFSTR("CFMachPort error"), err);
1174                 CFAllocatorDeallocate(NULL, crash_info);
1175                 CFRelease(err);
1176         }
1177
1178         return port;
1179 }
1180
1181
1182 #pragma mark -
1183 #pragma mark DOS encoding/codepage
1184
1185
1186 #if     !TARGET_OS_IPHONE
1187 void
1188 _SC_dos_encoding_and_codepage(CFStringEncoding  macEncoding,
1189                               UInt32            macRegion,
1190                               CFStringEncoding  *dosEncoding,
1191                               UInt32            *dosCodepage)
1192 {
1193         switch (macEncoding) {
1194         case kCFStringEncodingMacRoman:
1195                 if (macRegion != 0) /* anything non-zero is not US */
1196                 *dosEncoding = kCFStringEncodingDOSLatin1;
1197                 else /* US region */
1198                 *dosEncoding = kCFStringEncodingDOSLatinUS;
1199                 break;
1200
1201         case kCFStringEncodingMacJapanese:
1202                 *dosEncoding = kCFStringEncodingDOSJapanese;
1203                 break;
1204
1205         case kCFStringEncodingMacChineseTrad:
1206                 *dosEncoding = kCFStringEncodingDOSChineseTrad;
1207                 break;
1208
1209         case kCFStringEncodingMacKorean:
1210                 *dosEncoding = kCFStringEncodingDOSKorean;
1211                 break;
1212
1213         case kCFStringEncodingMacArabic:
1214                 *dosEncoding = kCFStringEncodingDOSArabic;
1215                 break;
1216
1217         case kCFStringEncodingMacHebrew:
1218                 *dosEncoding = kCFStringEncodingDOSHebrew;
1219                 break;
1220
1221         case kCFStringEncodingMacGreek:
1222                 *dosEncoding = kCFStringEncodingDOSGreek;
1223                 break;
1224
1225         case kCFStringEncodingMacCyrillic:
1226                 *dosEncoding = kCFStringEncodingDOSCyrillic;
1227                 break;
1228
1229         case kCFStringEncodingMacThai:
1230                 *dosEncoding = kCFStringEncodingDOSThai;
1231                 break;
1232
1233         case kCFStringEncodingMacChineseSimp:
1234                 *dosEncoding = kCFStringEncodingDOSChineseSimplif;
1235                 break;
1236
1237         case kCFStringEncodingMacCentralEurRoman:
1238                 *dosEncoding = kCFStringEncodingDOSLatin2;
1239                 break;
1240
1241         case kCFStringEncodingMacTurkish:
1242                 *dosEncoding = kCFStringEncodingDOSTurkish;
1243                 break;
1244
1245         case kCFStringEncodingMacCroatian:
1246                 *dosEncoding = kCFStringEncodingDOSLatin2;
1247                 break;
1248
1249         case kCFStringEncodingMacIcelandic:
1250                 *dosEncoding = kCFStringEncodingDOSIcelandic;
1251                 break;
1252
1253         case kCFStringEncodingMacRomanian:
1254                 *dosEncoding = kCFStringEncodingDOSLatin2;
1255                 break;
1256
1257         case kCFStringEncodingMacFarsi:
1258                 *dosEncoding = kCFStringEncodingDOSArabic;
1259                 break;
1260
1261         case kCFStringEncodingMacUkrainian:
1262                 *dosEncoding = kCFStringEncodingDOSCyrillic;
1263                 break;
1264
1265         default:
1266                 *dosEncoding = kCFStringEncodingDOSLatin1;
1267                 break;
1268         }
1269
1270         *dosCodepage = CFStringConvertEncodingToWindowsCodepage(*dosEncoding);
1271         return;
1272 }
1273 #endif  // !TARGET_OS_IPHONE
1274
1275
1276 #pragma mark -
1277 #pragma mark Debugging
1278
1279
1280 /*
1281  * print status of in-use mach ports
1282  */
1283 void
1284 _SC_logMachPortStatus(void)
1285 {
1286         kern_return_t           status;
1287         mach_port_name_array_t  ports;
1288         mach_port_type_array_t  types;
1289         mach_msg_type_number_t  pi, pn, tn;
1290         CFMutableStringRef      str;
1291
1292         SC_log(LOG_DEBUG, "----------");
1293
1294         /* report on ALL mach ports associated with this task */
1295         status = mach_port_names(mach_task_self(), &ports, &pn, &types, &tn);
1296         if (status == MACH_MSG_SUCCESS) {
1297                 str = CFStringCreateMutable(NULL, 0);
1298                 for (pi = 0; pi < pn; pi++) {
1299                         char    rights[16], *rp = &rights[0];
1300
1301                         if (types[pi] != MACH_PORT_TYPE_NONE) {
1302                                 *rp++ = ' ';
1303                                 *rp++ = '(';
1304                                 if (types[pi] & MACH_PORT_TYPE_SEND)
1305                                         *rp++ = 'S';
1306                                 if (types[pi] & MACH_PORT_TYPE_RECEIVE)
1307                                         *rp++ = 'R';
1308                                 if (types[pi] & MACH_PORT_TYPE_SEND_ONCE)
1309                                         *rp++ = 'O';
1310                                 if (types[pi] & MACH_PORT_TYPE_PORT_SET)
1311                                         *rp++ = 'P';
1312                                 if (types[pi] & MACH_PORT_TYPE_DEAD_NAME)
1313                                         *rp++ = 'D';
1314                                 *rp++ = ')';
1315                         }
1316                         *rp = '\0';
1317                         CFStringAppendFormat(str, NULL, CFSTR(" %d%s"), ports[pi], rights);
1318                 }
1319                 SC_log(LOG_DEBUG, "Task ports (n=%d):%@", pn, str);
1320                 CFRelease(str);
1321         }
1322
1323         return;
1324 }
1325
1326
1327 __private_extern__
1328 kern_return_t
1329 _SC_getMachPortReferences(mach_port_t           port,
1330                           mach_port_type_t      *pt,
1331                           mach_port_urefs_t     *refs_send,
1332                           mach_port_urefs_t     *refs_recv,
1333                           mach_port_status_t    *recv_status,
1334                           mach_port_urefs_t     *refs_once,
1335                           mach_port_urefs_t     *refs_pset,
1336                           mach_port_urefs_t     *refs_dead,
1337                           const char            *err_prefix)
1338 {
1339         kern_return_t           status;
1340
1341         status = mach_port_type(mach_task_self(), port, pt);
1342         if (status != KERN_SUCCESS) {
1343                 SC_log(LOG_DEBUG, "%smach_port_type(..., 0x%x): %s",
1344                        err_prefix,
1345                        port,
1346                        mach_error_string(status));
1347                 return status;
1348         }
1349
1350         if ((refs_send != NULL) && ((*pt & MACH_PORT_TYPE_SEND) != 0)) {
1351                 status = mach_port_get_refs(mach_task_self(), port, MACH_PORT_RIGHT_SEND, refs_send);
1352                 if (status != KERN_SUCCESS) {
1353                         SC_log(LOG_DEBUG, "%smach_port_get_refs(..., 0x%x, MACH_PORT_RIGHT_SEND): %s",
1354                                err_prefix,
1355                                port,
1356                                mach_error_string(status));
1357                         return status;
1358                 }
1359         }
1360
1361         if ((refs_recv != NULL) && (recv_status != NULL) && ((*pt & MACH_PORT_TYPE_RECEIVE) != 0)) {
1362                 mach_msg_type_number_t  count;
1363
1364                 status = mach_port_get_refs(mach_task_self(), port, MACH_PORT_RIGHT_RECEIVE, refs_recv);
1365                 if (status != KERN_SUCCESS) {
1366                         SC_log(LOG_DEBUG, "%smach_port_get_refs(..., 0x%x, MACH_PORT_RIGHT_RECEIVE): %s",
1367                                err_prefix,
1368                                port,
1369                                mach_error_string(status));
1370                         return status;
1371                 }
1372
1373                 count = MACH_PORT_RECEIVE_STATUS_COUNT;
1374                 status = mach_port_get_attributes(mach_task_self(),
1375                                                   port,
1376                                                   MACH_PORT_RECEIVE_STATUS,
1377                                                   (mach_port_info_t)recv_status,
1378                                                   &count);
1379                 if (status != KERN_SUCCESS) {
1380                         SC_log(LOG_DEBUG, "%smach_port_get_attributes(..., 0x%x, MACH_PORT_RECEIVE_STATUS): %s",
1381                                err_prefix,
1382                                port,
1383                                mach_error_string(status));
1384                         return status;
1385                 }
1386         }
1387
1388         if ((refs_once != NULL) && ((*pt & MACH_PORT_TYPE_SEND_ONCE) != 0)) {
1389                 status = mach_port_get_refs(mach_task_self(), port, MACH_PORT_RIGHT_SEND_ONCE, refs_once);
1390                 if (status != KERN_SUCCESS) {
1391                         SC_log(LOG_DEBUG, "%smach_port_get_refs(..., 0x%x, MACH_PORT_RIGHT_SEND_ONCE): %s",
1392                                err_prefix,
1393                                port,
1394                                mach_error_string(status));
1395                         return status;
1396                 }
1397         }
1398
1399         if ((refs_pset != NULL) && ((*pt & MACH_PORT_TYPE_PORT_SET) != 0)) {
1400                 status = mach_port_get_refs(mach_task_self(), port, MACH_PORT_RIGHT_PORT_SET, refs_pset);
1401                 if (status != KERN_SUCCESS) {
1402                         SC_log(LOG_DEBUG, "%smach_port_get_refs(..., 0x%x, MACH_PORT_RIGHT_PORT_SET): %s",
1403                                err_prefix,
1404                                port,
1405                                mach_error_string(status));
1406                         return status;
1407                 }
1408         }
1409
1410         if ((refs_dead != NULL) && ((*pt & MACH_PORT_TYPE_DEAD_NAME) != 0)) {
1411                 status = mach_port_get_refs(mach_task_self(), port, MACH_PORT_RIGHT_DEAD_NAME, refs_dead);
1412                 if (status != KERN_SUCCESS) {
1413                         SC_log(LOG_DEBUG, "%smach_port_get_refs(..., 0x%x, MACH_PORT_RIGHT_DEAD_NAME): %s",
1414                                err_prefix,
1415                                port,
1416                                mach_error_string(status));
1417                         return status;
1418                 }
1419         }
1420
1421         return KERN_SUCCESS;
1422 }
1423
1424
1425 void
1426 _SC_logMachPortReferences(const char *str, mach_port_t port)
1427 {
1428         const char              *blanks         = "                                                            ";
1429         char                    buf[60];
1430         mach_port_type_t        pt;
1431         mach_port_status_t      recv_status     = { .mps_nsrequest = 0, };
1432         mach_port_urefs_t       refs_send       = 0;
1433         mach_port_urefs_t       refs_recv       = 0;
1434         mach_port_urefs_t       refs_once       = 0;
1435         mach_port_urefs_t       refs_pset       = 0;
1436         mach_port_urefs_t       refs_dead       = 0;
1437         kern_return_t           status;
1438
1439         buf[0] = '\0';
1440         if (str != NULL) {
1441                 static int      is_configd      = -1;
1442
1443                 if (is_configd == -1) {
1444                         is_configd = (strcmp(getprogname(), _SC_SERVER_PROG) == 0);
1445                 }
1446                 if (is_configd == 1) {
1447                         // if "configd", add indication if this is the M[ain] or [P]lugin thread
1448                         strlcpy(buf,
1449                                 (CFRunLoopGetMain() == CFRunLoopGetCurrent()) ? "M " : "P ",
1450                                 sizeof(buf));
1451                 }
1452
1453                 // add provided string
1454                 strlcat(buf, str, sizeof(buf));
1455
1456                 // fill
1457                 strlcat(buf, blanks, sizeof(buf));
1458                 if (strcmp(&buf[sizeof(buf) - 3], "  ") == 0) {
1459                         buf[sizeof(buf) - 3] = ':';
1460                 }
1461         }
1462
1463         status = _SC_getMachPortReferences(port,
1464                                            &pt,
1465                                            &refs_send,
1466                                            &refs_recv,
1467                                            &recv_status,
1468                                            &refs_once,
1469                                            &refs_pset,
1470                                            &refs_dead,
1471                                            buf);
1472         if (status != KERN_SUCCESS) {
1473                 return;
1474         }
1475
1476         SC_log(LOG_DEBUG, "%smach port 0x%x (%d): send=%d, receive=%d, send once=%d, port set=%d, dead name=%d%s%s",
1477                buf,
1478                port,
1479                port,
1480                refs_send,
1481                refs_recv,
1482                refs_once,
1483                refs_pset,
1484                refs_dead,
1485                recv_status.mps_nsrequest ? ", no more senders"   : "",
1486                ((pt & MACH_PORT_TYPE_DEAD_NAME) != 0) ? ", dead name request" : "");
1487
1488         return;
1489 }
1490
1491
1492 CFStringRef
1493 _SC_copyBacktrace()
1494 {
1495         int                     n;
1496         void                    *stack[64];
1497         char                    **symbols;
1498         CFMutableStringRef      trace;
1499
1500         n = backtrace(stack, sizeof(stack)/sizeof(stack[0]));
1501         if (n == -1) {
1502                 SC_log(LOG_NOTICE, "backtrace() failed: %s", strerror(errno));
1503                 return NULL;
1504         }
1505
1506         trace = CFStringCreateMutable(NULL, 0);
1507
1508         symbols = backtrace_symbols(stack, n);
1509         if (symbols != NULL) {
1510                 int     i;
1511
1512                 for (i = 0; i < n; i++) {
1513                         CFStringAppendFormat(trace, NULL, CFSTR("%s\n"), symbols[i]);
1514                 }
1515
1516                 free(symbols);
1517         }
1518
1519         return trace;
1520 }
1521
1522
1523 static void
1524 _SC_ReportCrash(CFStringRef notifyHeader, CFStringRef notifyMessage)
1525 {
1526 #if     !TARGET_OS_IPHONE || TARGET_OS_SIMULATOR
1527 #pragma unused(notifyHeader)
1528 #pragma unused(notifyMessage)
1529 #endif  // !TARGET_OS_IPHONE || TARGET_OS_SIMULATOR
1530         static Boolean  warned  = FALSE;
1531
1532         if (!warned) {
1533 #if     TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR
1534                 CFStringRef     displayMessage;
1535
1536                 displayMessage = CFStringCreateWithFormat(NULL,
1537                                                           NULL,
1538                                                           CFSTR("%@\n\nPlease collect the crash report and file a Radar."),
1539                                                           notifyMessage);
1540                 CFUserNotificationDisplayNotice(0,
1541                                                 kCFUserNotificationStopAlertLevel,
1542                                                 NULL,
1543                                                 NULL,
1544                                                 NULL,
1545                                                 notifyHeader,
1546                                                 displayMessage,
1547                                                 NULL);
1548                 CFRelease(displayMessage);
1549 #endif  // TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR
1550                 warned = TRUE;
1551         }
1552
1553         return;
1554 }
1555
1556
1557 void
1558 _SC_crash(const char *crash_info, CFStringRef notifyHeader, CFStringRef notifyMessage)
1559 {
1560         if (_SC_isAppleInternal()) {
1561                 if (crash_info != NULL) {
1562                         CRSetCrashLogMessage(crash_info);
1563                         SC_log(LOG_NOTICE, "%s", crash_info);
1564                 }
1565
1566                 // simulate a crash report
1567                 os_log_with_type(SC_LOG_HANDLE(), OS_LOG_TYPE_FAULT, "%s", crash_info);
1568
1569                 // report the crash to the user
1570                 if ((notifyHeader != NULL) && (notifyMessage != NULL)) {
1571                         _SC_ReportCrash(notifyHeader, notifyMessage);
1572                 }
1573
1574                 if (crash_info != NULL) {
1575                         CRSetCrashLogMessage(NULL);
1576                 }
1577         }
1578
1579         return;
1580 }
1581
1582
1583 Boolean
1584 _SC_getconninfo(int socket, struct sockaddr_storage *src_addr, struct sockaddr_storage *dest_addr, int *if_index, uint32_t *flags)
1585 {
1586         struct so_cinforeq      request;
1587
1588         memset(&request, 0, sizeof(request));
1589
1590         if (src_addr != NULL) {
1591                 memset(src_addr, 0, sizeof(*src_addr));
1592                 request.scir_src = (struct sockaddr *)src_addr;
1593                 request.scir_src_len = sizeof(*src_addr);
1594         }
1595
1596         if (dest_addr != NULL) {
1597                 memset(dest_addr, 0, sizeof(*dest_addr));
1598                 request.scir_dst = (struct sockaddr *)dest_addr;
1599                 request.scir_dst_len = sizeof(*dest_addr);
1600         }
1601
1602         if (ioctl(socket, SIOCGCONNINFO, &request) != 0) {
1603                 SC_log(LOG_NOTICE, "SIOCGCONNINFO failed: %s", strerror(errno));
1604                 return FALSE;
1605         }
1606
1607         if (if_index != NULL) {
1608                 *if_index = 0;
1609                 *if_index = request.scir_ifindex;
1610         }
1611
1612         if (flags != NULL) {
1613                 *flags = 0;
1614                 *flags = request.scir_flags;
1615         }
1616
1617         return TRUE;
1618 }