SystemConfiguration.fproj/SCDPrivate.c

   1 /*
   2  * Copyright (c) 2000-2012 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 #include <SystemConfiguration/SystemConfiguration.h>
  38 #include <SystemConfiguration/SCValidation.h>
  39 #include <SystemConfiguration/SCPrivate.h>
  40
  41 #include <sys/param.h>
  42 #include <sys/types.h>
  43 #include <sys/socket.h>
  44 #include <net/if.h>
  45 #include <net/if_dl.h>
  46 #include <netinet/in.h>
  47 #include <arpa/inet.h>
  48
  49 #include <mach/mach.h>
  50 #include <mach/notify.h>
  51 #include <mach/mach_error.h>
  52 #include <pthread.h>
  53
  54 #include <execinfo.h>
  55 #include <unistd.h>
  56 #include <dlfcn.h>
  57
  58
  59 #if     TARGET_OS_EMBEDDED && !TARGET_OS_EMBEDDED_OTHER && !defined(DO_NOT_INFORM)
  60 #include <CoreFoundation/CFUserNotification.h>
  61 #endif  // TARGET_OS_EMBEDDED && !TARGET_OS_EMBEDDED_OTHER && !defined(DO_NOT_INFORM)
  62
  63 #define N_QUICK 32
  64
  65
  66 #pragma mark -
  67 #pragma mark Miscellaneous
  68
  69
  70 char *
  71 _SC_cfstring_to_cstring(CFStringRef cfstr, char *buf, CFIndex bufLen, CFStringEncoding encoding)
  72 {
  73         CFIndex converted;
  74         CFIndex last    = 0;
  75         CFIndex len;
  76
  77         if (cfstr == NULL) {
  78                 cfstr = CFSTR("");
  79         }
  80         len = CFStringGetLength(cfstr);
  81
  82         /* how much buffer space will we really need? */
  83         converted = CFStringGetBytes(cfstr,
  84                                      CFRangeMake(0, len),
  85                                      encoding,
  86                                      0,
  87                                      FALSE,
  88                                      NULL,
  89                                      0,
  90                                      &last);
  91         if (converted < len) {
  92                 /* if full string could not be converted */
  93                 if (buf != NULL) {
  94                         buf[0] = '\0';
  95                 }
  96                 return NULL;
  97         }
  98
  99         if (buf != NULL) {
 100                 if (bufLen < (last + 1)) {
 101                         /* if the size of the provided buffer is too small */
 102                         buf[0] = '\0';
 103                         return NULL;
 104                 }
 105         } else {
 106                 /* allocate a buffer */
 107                 bufLen = last + 1;
 108                 buf = CFAllocatorAllocate(NULL, bufLen, 0);
 109                 if (buf == NULL) {
 110                         return NULL;
 111                 }
 112         }
 113
 114         (void)CFStringGetBytes(cfstr,
 115                                CFRangeMake(0, len),
 116                                encoding,
 117                                0,
 118                                FALSE,
 119                                (UInt8 *)buf,
 120                                bufLen,
 121                                &last);
 122         buf[last] = '\0';
 123
 124         return buf;
 125 }
 126
 127
 128 void
 129 _SC_sockaddr_to_string(const struct sockaddr *address, char *buf, size_t bufLen)
 130 {
 131         union {
 132                 const struct sockaddr           *sa;
 133                 const struct sockaddr_in        *sin;
 134                 const struct sockaddr_in6       *sin6;
 135                 const struct sockaddr_dl        *sdl;
 136         } addr;
 137
 138         addr.sa = address;
 139
 140         bzero(buf, bufLen);
 141         switch (address->sa_family) {
 142                 case AF_INET :
 143                         (void)inet_ntop(addr.sin->sin_family,
 144                                         &addr.sin->sin_addr,
 145                                         buf,
 146                                         bufLen);
 147                         break;
 148                 case AF_INET6 : {
 149                         (void)inet_ntop(addr.sin6->sin6_family,
 150                                         &addr.sin6->sin6_addr,
 151                                         buf,
 152                                         bufLen);
 153                         if (addr.sin6->sin6_scope_id != 0) {
 154                                 int     n;
 155
 156                                 n = strlen(buf);
 157                                 if ((n+IF_NAMESIZE+1) <= (int)bufLen) {
 158                                         buf[n++] = '%';
 159                                         if_indextoname(addr.sin6->sin6_scope_id, &buf[n]);
 160                                 }
 161                         }
 162                         break;
 163                 }
 164                 case AF_LINK :
 165                         if (addr.sdl->sdl_len < bufLen) {
 166                                 bufLen = addr.sdl->sdl_len;
 167                         } else {
 168                                 bufLen = bufLen - 1;
 169                         }
 170
 171                         bcopy(addr.sdl->sdl_data, buf, bufLen);
 172                         break;
 173                 default :
 174                         snprintf(buf, bufLen, "unexpected address family %d", address->sa_family);
 175                         break;
 176         }
 177
 178         return;
 179 }
 180
 181
 182 struct sockaddr *
 183 _SC_string_to_sockaddr(const char *str, sa_family_t af, void *buf, size_t bufLen)
 184 {
 185         union {
 186                 void                    *buf;
 187                 struct sockaddr         *sa;
 188                 struct sockaddr_in      *sin;
 189                 struct sockaddr_in6     *sin6;
 190         } addr;
 191
 192         if (buf == NULL) {
 193                 bufLen = sizeof(struct sockaddr_storage);
 194                 addr.buf = CFAllocatorAllocate(NULL, bufLen, 0);
 195         } else {
 196                 addr.buf = buf;
 197         }
 198
 199         bzero(addr.buf, bufLen);
 200         if (((af == AF_UNSPEC) || (af == AF_INET)) &&
 201             (bufLen >= sizeof(struct sockaddr_in)) &&
 202             inet_aton(str, &addr.sin->sin_addr) == 1) {
 203                 // if IPv4 address
 204                 addr.sin->sin_len    = sizeof(struct sockaddr_in);
 205                 addr.sin->sin_family = AF_INET;
 206         } else if (((af == AF_UNSPEC) || (af == AF_INET6)) &&
 207                    (bufLen >= sizeof(struct sockaddr_in6)) &&
 208                    inet_pton(AF_INET6, str, &addr.sin6->sin6_addr) == 1) {
 209                 // if IPv6 address
 210                 char    *p;
 211
 212                 addr.sin6->sin6_len    = sizeof(struct sockaddr_in6);
 213                 addr.sin6->sin6_family = AF_INET6;
 214
 215                 p = strchr(buf, '%');
 216                 if (p != NULL) {
 217                         addr.sin6->sin6_scope_id = if_nametoindex(p + 1);
 218                 }
 219
 220                 if (IN6_IS_ADDR_LINKLOCAL(&addr.sin6->sin6_addr) ||
 221                     IN6_IS_ADDR_MC_LINKLOCAL(&addr.sin6->sin6_addr)) {
 222                         uint16_t        if_index;
 223
 224                         if_index = ntohs(addr.sin6->sin6_addr.__u6_addr.__u6_addr16[1]);
 225                         addr.sin6->sin6_addr.__u6_addr.__u6_addr16[1] = 0;
 226                         if (addr.sin6->sin6_scope_id == 0) {
 227                                 // use the scope id that was embedded in the [link local] IPv6 address
 228                                 addr.sin6->sin6_scope_id = if_index;
 229                         }
 230                 }
 231         } else {
 232                 if (addr.buf != buf) {
 233                         CFAllocatorDeallocate(NULL, addr.buf);
 234                 }
 235                 addr.buf = NULL;
 236         }
 237
 238         return addr.sa;
 239 }
 240
 241
 242 void
 243 _SC_sendMachMessage(mach_port_t port, mach_msg_id_t msg_id)
 244 {
 245         mach_msg_empty_send_t   msg;
 246         mach_msg_option_t       options;
 247         kern_return_t           status;
 248
 249         msg.header.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, 0);
 250         msg.header.msgh_size = sizeof(msg);
 251         msg.header.msgh_remote_port = port;
 252         msg.header.msgh_local_port = MACH_PORT_NULL;
 253         msg.header.msgh_id = msg_id;
 254         options = MACH_SEND_TIMEOUT;
 255         status = mach_msg(&msg.header,                  /* msg */
 256                           MACH_SEND_MSG|options,        /* options */
 257                           msg.header.msgh_size,         /* send_size */
 258                           0,                            /* rcv_size */
 259                           MACH_PORT_NULL,               /* rcv_name */
 260                           0,                            /* timeout */
 261                           MACH_PORT_NULL);              /* notify */
 262         if (status != MACH_MSG_SUCCESS) {
 263                 mach_msg_destroy(&msg.header);
 264         }
 265
 266         return;
 267 }
 268
 269
 270 CFStringRef
 271 _SC_trimDomain(CFStringRef domain)
 272 {
 273         CFIndex length;
 274
 275         if (!isA_CFString(domain)) {
 276                 return NULL;
 277         }
 278
 279         // remove any leading/trailing dots
 280         length = CFStringGetLength(domain);
 281         if ((length > 0) &&
 282             (CFStringFindWithOptions(domain,
 283                                      CFSTR("."),
 284                                      CFRangeMake(0, 1),
 285                                      kCFCompareAnchored,
 286                                      NULL) ||
 287              CFStringFindWithOptions(domain,
 288                                      CFSTR("."),
 289                                      CFRangeMake(0, length),
 290                                      kCFCompareAnchored|kCFCompareBackwards,
 291                                      NULL))) {
 292                      CFMutableStringRef trimmed;
 293
 294                      trimmed = CFStringCreateMutableCopy(NULL, 0, domain);
 295                      CFStringTrim(trimmed, CFSTR("."));
 296                      domain = (CFStringRef)trimmed;
 297                      length = CFStringGetLength(domain);
 298              } else {
 299                      CFRetain(domain);
 300              }
 301
 302         if (length == 0) {
 303                 CFRelease(domain);
 304                 domain = NULL;
 305         }
 306
 307         return domain;
 308 }
 309
 310
 311 #pragma mark -
 312 #pragma mark Serialization
 313
 314
 315 Boolean
 316 _SCSerialize(CFPropertyListRef obj, CFDataRef *xml, void **dataRef, CFIndex *dataLen)
 317 {
 318         CFDataRef               myXml;
 319
 320         if ((xml == NULL) && ((dataRef == NULL) || (dataLen == NULL))) {
 321                 /* if not keeping track of allocated space */
 322                 return FALSE;
 323         }
 324
 325         myXml = CFPropertyListCreateData(NULL,
 326                                          obj,
 327                                          kCFPropertyListBinaryFormat_v1_0,
 328                                          0,
 329                                          NULL);
 330         if (myXml == NULL) {
 331                 SCLog(TRUE, LOG_ERR, CFSTR("_SCSerialize() failed"));
 332                 if (xml != NULL) {
 333                         *xml = NULL;
 334                 }
 335                 if ((dataRef != NULL) && (dataLen != NULL)) {
 336                         *dataLen = 0;
 337                         *dataRef = NULL;
 338                 }
 339                 return FALSE;
 340         }
 341
 342         if (xml != NULL) {
 343                 *xml = myXml;
 344                 if ((dataRef != NULL) && (dataLen != NULL)) {
 345                         *dataRef = (void *)CFDataGetBytePtr(myXml);
 346                         *dataLen = CFDataGetLength(myXml);
 347                 }
 348         } else {
 349                 mach_msg_type_number_t  len;
 350                 kern_return_t           status;
 351
 352                 status = vm_read(mach_task_self(),
 353                                  (vm_address_t)CFDataGetBytePtr(myXml), // address
 354                                  (vm_size_t)   CFDataGetLength(myXml),  // size
 355                                  (void *)dataRef,
 356                                  &len);
 357                 if (status != KERN_SUCCESS) {
 358                         SCLog(TRUE, LOG_ERR, CFSTR("_SCSerialize(): %s"), mach_error_string(status));
 359                         CFRelease(myXml);
 360                         *dataRef = NULL;
 361                         *dataLen = 0;
 362                         return FALSE;
 363                 }
 364
 365                 *dataLen = len;
 366                 CFRelease(myXml);
 367         }
 368
 369         return TRUE;
 370 }
 371
 372
 373 Boolean
 374 _SCUnserialize(CFPropertyListRef *obj, CFDataRef xml, void *dataRef, CFIndex dataLen)
 375 {
 376         CFErrorRef      error   = NULL;
 377
 378         if (xml == NULL) {
 379                 kern_return_t   status;
 380
 381                 xml = CFDataCreateWithBytesNoCopy(NULL, (void *)dataRef, dataLen, kCFAllocatorNull);
 382                 *obj = CFPropertyListCreateWithData(NULL, xml, kCFPropertyListImmutable, NULL, &error);
 383                 CFRelease(xml);
 384
 385                 status = vm_deallocate(mach_task_self(), (vm_address_t)dataRef, dataLen);
 386                 if (status != KERN_SUCCESS) {
 387                         SCLog(_sc_verbose, LOG_DEBUG, CFSTR("_SCUnserialize(): %s"), mach_error_string(status));
 388                         /* non-fatal???, proceed */
 389                 }
 390         } else {
 391                 *obj = CFPropertyListCreateWithData(NULL, xml, kCFPropertyListImmutable, NULL, &error);
 392         }
 393
 394         if (*obj == NULL) {
 395                 if (error != NULL) {
 396                         SCLog(TRUE, LOG_ERR, CFSTR("_SCUnserialize(): %@"), error);
 397                         CFRelease(error);
 398                 }
 399                 _SCErrorSet(kSCStatusFailed);
 400                 return FALSE;
 401         }
 402
 403         return TRUE;
 404 }
 405
 406
 407 Boolean
 408 _SCSerializeString(CFStringRef str, CFDataRef *data, void **dataRef, CFIndex *dataLen)
 409 {
 410         CFDataRef       myData;
 411
 412         if (!isA_CFString(str)) {
 413                 /* if not a CFString */
 414                 return FALSE;
 415         }
 416
 417         if ((data == NULL) && ((dataRef == NULL) || (dataLen == NULL))) {
 418                 /* if not keeping track of allocated space */
 419                 return FALSE;
 420         }
 421
 422         myData = CFStringCreateExternalRepresentation(NULL, str, kCFStringEncodingUTF8, 0);
 423         if (myData == NULL) {
 424                 SCLog(TRUE, LOG_ERR, CFSTR("_SCSerializeString() failed"));
 425                 if (data != NULL) {
 426                         *data = NULL;
 427                 }
 428                 if ((dataRef != NULL) && (dataLen != NULL)) {
 429                         *dataRef = NULL;
 430                         *dataLen = 0;
 431                 }
 432                 return FALSE;
 433         }
 434
 435         if (data != NULL) {
 436                 *data = myData;
 437                 if ((dataRef != NULL) && (dataLen != NULL)) {
 438                         *dataRef = (void *)CFDataGetBytePtr(myData);
 439                         *dataLen = CFDataGetLength(myData);
 440                 }
 441         } else {
 442                 mach_msg_type_number_t  len;
 443                 kern_return_t           status;
 444
 445                 *dataLen = CFDataGetLength(myData);
 446                 status = vm_read(mach_task_self(),
 447                                  (vm_address_t)CFDataGetBytePtr(myData),        // address
 448                                  *dataLen,                                      // size
 449                                  (void *)dataRef,
 450                                  &len);
 451                 if (status != KERN_SUCCESS) {
 452                         SCLog(TRUE, LOG_ERR, CFSTR("_SCSerializeString(): %s"), mach_error_string(status));
 453                         CFRelease(myData);
 454                         *dataRef = NULL;
 455                         *dataLen = 0;
 456                         return FALSE;
 457                 }
 458
 459                 *dataLen = len;
 460                 CFRelease(myData);
 461         }
 462
 463         return TRUE;
 464 }
 465
 466
 467 Boolean
 468 _SCUnserializeString(CFStringRef *str, CFDataRef utf8, void *dataRef, CFIndex dataLen)
 469 {
 470         if (utf8 == NULL) {
 471                 kern_return_t   status;
 472
 473                 utf8 = CFDataCreateWithBytesNoCopy(NULL, dataRef, dataLen, kCFAllocatorNull);
 474                 *str = CFStringCreateFromExternalRepresentation(NULL, utf8, kCFStringEncodingUTF8);
 475                 CFRelease(utf8);
 476
 477                 status = vm_deallocate(mach_task_self(), (vm_address_t)dataRef, dataLen);
 478                 if (status != KERN_SUCCESS) {
 479                         SCLog(_sc_verbose, LOG_DEBUG, CFSTR("_SCUnserializeString(): %s"), mach_error_string(status));
 480                         /* non-fatal???, proceed */
 481                 }
 482         } else {
 483                 *str = CFStringCreateFromExternalRepresentation(NULL, utf8, kCFStringEncodingUTF8);
 484         }
 485
 486         if (*str == NULL) {
 487                 SCLog(TRUE, LOG_ERR, CFSTR("_SCUnserializeString() failed"));
 488                 return FALSE;
 489         }
 490
 491         return TRUE;
 492 }
 493
 494
 495 Boolean
 496 _SCSerializeData(CFDataRef data, void **dataRef, CFIndex *dataLen)
 497 {
 498         mach_msg_type_number_t  len;
 499         kern_return_t           status;
 500
 501         if (!isA_CFData(data)) {
 502                 /* if not a CFData */
 503                 return FALSE;
 504         }
 505
 506         *dataLen = CFDataGetLength(data);
 507         status = vm_read(mach_task_self(),
 508                          (vm_address_t)CFDataGetBytePtr(data),  // address
 509                          *dataLen,                              // size
 510                          (void *)dataRef,
 511                          &len);
 512         if (status != KERN_SUCCESS) {
 513                 SCLog(TRUE, LOG_ERR, CFSTR("_SCSerializeData(): %s"), mach_error_string(status));
 514                 *dataRef = NULL;
 515                 *dataLen = 0;
 516                 return FALSE;
 517         }
 518
 519         *dataLen = len;
 520
 521         return TRUE;
 522 }
 523
 524
 525 Boolean
 526 _SCUnserializeData(CFDataRef *data, void *dataRef, CFIndex dataLen)
 527 {
 528         kern_return_t           status;
 529
 530         *data = CFDataCreate(NULL, dataRef, dataLen);
 531         status = vm_deallocate(mach_task_self(), (vm_address_t)dataRef, dataLen);
 532         if (status != KERN_SUCCESS) {
 533                 SCLog(_sc_verbose, LOG_DEBUG, CFSTR("_SCUnserializeData(): %s"), mach_error_string(status));
 534                 _SCErrorSet(kSCStatusFailed);
 535                 return FALSE;
 536         }
 537
 538         return TRUE;
 539 }
 540
 541
 542 CF_RETURNS_RETAINED CFDictionaryRef
 543 _SCSerializeMultiple(CFDictionaryRef dict)
 544 {
 545         const void *            keys_q[N_QUICK];
 546         const void **           keys            = keys_q;
 547         CFIndex                 nElements;
 548         CFDictionaryRef         newDict         = NULL;
 549         const void *            pLists_q[N_QUICK];
 550         const void **           pLists          = pLists_q;
 551         const void *            values_q[N_QUICK];
 552         const void **           values          = values_q;
 553
 554         nElements = CFDictionaryGetCount(dict);
 555         if (nElements > 0) {
 556                 CFIndex i;
 557
 558                 if (nElements > (CFIndex)(sizeof(keys_q) / sizeof(CFTypeRef))) {
 559                         keys   = CFAllocatorAllocate(NULL, nElements * sizeof(CFTypeRef), 0);
 560                         values = CFAllocatorAllocate(NULL, nElements * sizeof(CFTypeRef), 0);
 561                         pLists = CFAllocatorAllocate(NULL, nElements * sizeof(CFTypeRef), 0);
 562                 }
 563                 bzero(pLists, nElements * sizeof(CFTypeRef));
 564
 565                 CFDictionaryGetKeysAndValues(dict, keys, values);
 566                 for (i = 0; i < nElements; i++) {
 567                         if (!_SCSerialize((CFPropertyListRef)values[i], (CFDataRef *)&pLists[i], NULL, NULL)) {
 568                                 goto done;
 569                         }
 570                 }
 571         }
 572
 573         newDict = CFDictionaryCreate(NULL,
 574                                      keys,
 575                                      pLists,
 576                                      nElements,
 577                                      &kCFTypeDictionaryKeyCallBacks,
 578                                      &kCFTypeDictionaryValueCallBacks);
 579
 580     done :
 581
 582         if (nElements > 0) {
 583                 CFIndex i;
 584
 585                 for (i = 0; i < nElements; i++) {
 586                         if (pLists[i])  CFRelease(pLists[i]);
 587                 }
 588
 589                 if (keys != keys_q) {
 590                         CFAllocatorDeallocate(NULL, keys);
 591                         CFAllocatorDeallocate(NULL, values);
 592                         CFAllocatorDeallocate(NULL, pLists);
 593                 }
 594         }
 595
 596         return newDict;
 597 }
 598
 599
 600 CF_RETURNS_RETAINED
 601 CFDictionaryRef
 602 _SCUnserializeMultiple(CFDictionaryRef dict)
 603 {
 604         const void *            keys_q[N_QUICK];
 605         const void **           keys            = keys_q;
 606         CFIndex                 nElements;
 607         CFDictionaryRef         newDict         = NULL;
 608         const void *            pLists_q[N_QUICK];
 609         const void **           pLists          = pLists_q;
 610         const void *            values_q[N_QUICK];
 611         const void **           values          = values_q;
 612
 613         nElements = CFDictionaryGetCount(dict);
 614         if (nElements > 0) {
 615                 CFIndex i;
 616
 617                 if (nElements > (CFIndex)(sizeof(keys_q) / sizeof(CFTypeRef))) {
 618                         keys   = CFAllocatorAllocate(NULL, nElements * sizeof(CFTypeRef), 0);
 619                         values = CFAllocatorAllocate(NULL, nElements * sizeof(CFTypeRef), 0);
 620                         pLists = CFAllocatorAllocate(NULL, nElements * sizeof(CFTypeRef), 0);
 621                 }
 622                 bzero(pLists, nElements * sizeof(CFTypeRef));
 623
 624                 CFDictionaryGetKeysAndValues(dict, keys, values);
 625                 for (i = 0; i < nElements; i++) {
 626                         if (!_SCUnserialize((CFPropertyListRef *)&pLists[i], values[i], NULL, 0)) {
 627                                 goto done;
 628                         }
 629                 }
 630         }
 631
 632         newDict = CFDictionaryCreate(NULL,
 633                                      keys,
 634                                      pLists,
 635                                      nElements,
 636                                      &kCFTypeDictionaryKeyCallBacks,
 637                                      &kCFTypeDictionaryValueCallBacks);
 638
 639     done :
 640
 641         if (nElements > 0) {
 642                 CFIndex i;
 643
 644                 for (i = 0; i < nElements; i++) {
 645                         if (pLists[i])  CFRelease(pLists[i]);
 646                 }
 647
 648                 if (keys != keys_q) {
 649                         CFAllocatorDeallocate(NULL, keys);
 650                         CFAllocatorDeallocate(NULL, values);
 651                         CFAllocatorDeallocate(NULL, pLists);
 652                 }
 653         }
 654
 655         return newDict;
 656 }
 657
 658
 659 #pragma mark -
 660 #pragma mark CFRunLoop scheduling
 661
 662
 663 __private_extern__ void
 664 _SC_signalRunLoop(CFTypeRef obj, CFRunLoopSourceRef rls, CFArrayRef rlList)
 665 {
 666         CFRunLoopRef    rl      = NULL;
 667         CFRunLoopRef    rl1     = NULL;
 668         CFIndex         i;
 669         CFIndex         n       = CFArrayGetCount(rlList);
 670
 671         if (n == 0) {
 672                 return;
 673         }
 674
 675         /* get first runLoop for this object */
 676         for (i = 0; i < n; i += 3) {
 677                 if (!CFEqual(obj, CFArrayGetValueAtIndex(rlList, i))) {
 678                         continue;
 679                 }
 680
 681                 rl1 = (CFRunLoopRef)CFArrayGetValueAtIndex(rlList, i+1);
 682                 break;
 683         }
 684
 685         if (rl1 == NULL) {
 686                 /* if not scheduled */
 687                 return;
 688         }
 689
 690         /* check if we have another runLoop for this object */
 691         rl = rl1;
 692         for (i = i+3; i < n; i += 3) {
 693                 CFRunLoopRef    rl2;
 694
 695                 if (!CFEqual(obj, CFArrayGetValueAtIndex(rlList, i))) {
 696                         continue;
 697                 }
 698
 699                 rl2 = (CFRunLoopRef)CFArrayGetValueAtIndex(rlList, i+1);
 700                 if (!CFEqual(rl1, rl2)) {
 701                         /* we've got more than one runLoop */
 702                         rl = NULL;
 703                         break;
 704                 }
 705         }
 706
 707         if (rl != NULL) {
 708                 /* if we only have one runLoop */
 709                 CFRunLoopWakeUp(rl);
 710                 return;
 711         }
 712
 713         /* more than one different runLoop, so we must pick one */
 714         for (i = 0; i < n; i+=3) {
 715                 CFStringRef     rlMode;
 716
 717                 if (!CFEqual(obj, CFArrayGetValueAtIndex(rlList, i))) {
 718                         continue;
 719                 }
 720
 721                 rl     = (CFRunLoopRef)CFArrayGetValueAtIndex(rlList, i+1);
 722                 rlMode = CFRunLoopCopyCurrentMode(rl);
 723                 if (rlMode != NULL) {
 724                         Boolean waiting;
 725
 726                         waiting = (CFRunLoopIsWaiting(rl) && CFRunLoopContainsSource(rl, rls, rlMode));
 727                         CFRelease(rlMode);
 728                         if (waiting) {
 729                                 /* we've found a runLoop that's "ready" */
 730                                 CFRunLoopWakeUp(rl);
 731                                 return;
 732                         }
 733                 }
 734         }
 735
 736         /* didn't choose one above, so choose first */
 737         CFRunLoopWakeUp(rl1);
 738         return;
 739 }
 740
 741
 742 __private_extern__ Boolean
 743 _SC_isScheduled(CFTypeRef obj, CFRunLoopRef runLoop, CFStringRef runLoopMode, CFMutableArrayRef rlList)
 744 {
 745         CFIndex i;
 746         CFIndex n       = CFArrayGetCount(rlList);
 747
 748         for (i = 0; i < n; i += 3) {
 749                 if ((obj != NULL)         && !CFEqual(obj,         CFArrayGetValueAtIndex(rlList, i))) {
 750                         continue;
 751                 }
 752                 if ((runLoop != NULL)     && !CFEqual(runLoop,     CFArrayGetValueAtIndex(rlList, i+1))) {
 753                         continue;
 754                 }
 755                 if ((runLoopMode != NULL) && !CFEqual(runLoopMode, CFArrayGetValueAtIndex(rlList, i+2))) {
 756                         continue;
 757                 }
 758                 return TRUE;
 759         }
 760
 761         return FALSE;
 762 }
 763
 764
 765 __private_extern__ void
 766 _SC_schedule(CFTypeRef obj, CFRunLoopRef runLoop, CFStringRef runLoopMode, CFMutableArrayRef rlList)
 767 {
 768         CFArrayAppendValue(rlList, obj);
 769         CFArrayAppendValue(rlList, runLoop);
 770         CFArrayAppendValue(rlList, runLoopMode);
 771
 772         return;
 773 }
 774
 775
 776 __private_extern__ Boolean
 777 _SC_unschedule(CFTypeRef obj, CFRunLoopRef runLoop, CFStringRef runLoopMode, CFMutableArrayRef rlList, Boolean all)
 778 {
 779         CFIndex i       = 0;
 780         Boolean found   = FALSE;
 781         CFIndex n       = CFArrayGetCount(rlList);
 782
 783         while (i < n) {
 784                 if ((obj != NULL)         && !CFEqual(obj,         CFArrayGetValueAtIndex(rlList, i))) {
 785                         i += 3;
 786                         continue;
 787                 }
 788                 if ((runLoop != NULL)     && !CFEqual(runLoop,     CFArrayGetValueAtIndex(rlList, i+1))) {
 789                         i += 3;
 790                         continue;
 791                 }
 792                 if ((runLoopMode != NULL) && !CFEqual(runLoopMode, CFArrayGetValueAtIndex(rlList, i+2))) {
 793                         i += 3;
 794                         continue;
 795                 }
 796
 797                 found = TRUE;
 798
 799                 CFArrayRemoveValueAtIndex(rlList, i + 2);
 800                 CFArrayRemoveValueAtIndex(rlList, i + 1);
 801                 CFArrayRemoveValueAtIndex(rlList, i);
 802
 803                 if (!all) {
 804                         return found;
 805                 }
 806
 807                 n -= 3;
 808         }
 809
 810         return found;
 811 }
 812
 813
 814 #pragma mark -
 815 #pragma mark Bundle
 816
 817
 818 #define SYSTEMCONFIGURATION_BUNDLE_ID           CFSTR("com.apple.SystemConfiguration")
 819 #define SYSTEMCONFIGURATION_FRAMEWORK_PATH      "/System/Library/Frameworks/SystemConfiguration.framework"
 820 #define SYSTEMCONFIGURATION_FRAMEWORK_PATH_LEN  (sizeof(SYSTEMCONFIGURATION_FRAMEWORK_PATH) - 1)
 821
 822 #define SUFFIX_SYM                              "~sym"
 823 #define SUFFIX_SYM_LEN                          (sizeof(SUFFIX_SYM) - 1)
 824
 825 #define SUFFIX_DST                              "~dst"
 826
 827
 828 CFBundleRef
 829 _SC_CFBundleGet(void)
 830 {
 831         static CFBundleRef      bundle  = NULL;
 832         char                    *env;
 833         size_t                  len;
 834
 835         if (bundle != NULL) {
 836                 return bundle;
 837         }
 838
 839         bundle = CFBundleGetBundleWithIdentifier(SYSTEMCONFIGURATION_BUNDLE_ID);
 840         if (bundle != NULL) {
 841                 CFRetain(bundle);       // we want to hold a reference to the bundle
 842                 return bundle;
 843         }
 844
 845         // if appropriate (e.g. when debugging), try a bit harder
 846
 847         env = getenv("DYLD_FRAMEWORK_PATH");
 848         len = (env != NULL) ? strlen(env) : 0;
 849
 850         // trim any trailing slashes
 851         while (len > 1) {
 852                 if (env[len - 1] != '/') {
 853                         break;
 854                 }
 855                 len--;
 856         }
 857
 858         // if DYLD_FRAMEWORK_PATH is ".../xxx~sym" than try ".../xxx~dst"
 859         if ((len > SUFFIX_SYM_LEN) &&
 860             (strncmp(&env[len - SUFFIX_SYM_LEN], SUFFIX_SYM, SUFFIX_SYM_LEN) == 0) &&
 861             ((len + SYSTEMCONFIGURATION_FRAMEWORK_PATH_LEN) < MAXPATHLEN)) {
 862                 char            path[MAXPATHLEN];
 863                 CFURLRef        url;
 864
 865                 strlcpy(path, env, sizeof(path));
 866                 strlcpy(&path[len - SUFFIX_SYM_LEN], SUFFIX_DST, sizeof(path) - (len - SUFFIX_SYM_LEN));
 867                 strlcat(&path[len], SYSTEMCONFIGURATION_FRAMEWORK_PATH, sizeof(path) - len);
 868
 869                 url = CFURLCreateFromFileSystemRepresentation(NULL,
 870                                                               (UInt8 *)path,
 871                                                               len + SYSTEMCONFIGURATION_FRAMEWORK_PATH_LEN,
 872                                                               TRUE);
 873                 bundle = CFBundleCreate(NULL, url);
 874                 CFRelease(url);
 875         }
 876
 877         if (bundle == NULL) {
 878                 static  Boolean warned  = FALSE;
 879
 880                 SCLog(!warned, LOG_WARNING,
 881                       CFSTR("_SC_CFBundleGet(), could not get CFBundle for \"%@\""),
 882                       SYSTEMCONFIGURATION_BUNDLE_ID);
 883                 warned = TRUE;
 884         }
 885
 886         return bundle;
 887 }
 888
 889
 890 CFStringRef
 891 _SC_CFBundleCopyNonLocalizedString(CFBundleRef bundle, CFStringRef key, CFStringRef value, CFStringRef tableName)
 892 {
 893         CFDataRef       data    = NULL;
 894         SInt32          errCode = 0;
 895         CFURLRef        resourcesURL;
 896         CFStringRef     str     = NULL;
 897         CFURLRef        url;
 898
 899         if ((tableName == NULL) || CFEqual(tableName, CFSTR(""))) tableName = CFSTR("Localizable");
 900
 901         /*
 902          * First, try getting the requested string using a manually constructed
 903          * URL to <bundle>/Resources/English.lproj/<tableName>.strings. Do this
 904          * because CFBundleCopyResourceURLForLocalization() uses CFPreferences
 905          * to get the preferred localizations, CFPreferences talks to
 906          * OpenDirectory, and OpenDirectory tries to obtain the platform UUID.
 907          * On machines where the platform UUID is set by InterfaceNamer, a
 908          * deadlock can occur if InterfaceNamer calls
 909          * CFBundleCopyResourceURLForLocalization() before setting the
 910          * platform UUID in the kernel.
 911          */
 912         resourcesURL = CFBundleCopyResourcesDirectoryURL(bundle);
 913         if (resourcesURL != NULL) {
 914                 CFStringRef fileName = CFStringCreateWithFormat(
 915                                             NULL, NULL, CFSTR("%@.strings"), tableName);
 916                 CFURLRef enlproj = CFURLCreateCopyAppendingPathComponent(
 917                                       NULL, resourcesURL, CFSTR("English.lproj"), true);
 918                 url = CFURLCreateCopyAppendingPathComponent(
 919                                    NULL, enlproj, fileName, false);
 920                 CFRelease(enlproj);
 921                 CFRelease(fileName);
 922                 CFRelease(resourcesURL);
 923
 924                 if (!CFURLCreateDataAndPropertiesFromResource(NULL,
 925                                                               url,
 926                                                               &data,
 927                                                               NULL,
 928                                                               NULL,
 929                                                               &errCode)) {
 930                         /*
 931                          * Failed to get the data using a manually-constructed URL
 932                          * for the given strings table. Fall back to using
 933                          * CFBundleCopyResourceURLForLocalization() below.
 934                          */
 935                         data = NULL;
 936                 }
 937                 CFRelease(url);
 938         }
 939
 940         if (data == NULL) {
 941                 url = CFBundleCopyResourceURLForLocalization(bundle,
 942                                                              tableName,
 943                                                              CFSTR("strings"),
 944                                                              NULL,
 945                                                              CFSTR("English"));
 946                 if (url != NULL) {
 947                         if (!CFURLCreateDataAndPropertiesFromResource(NULL,
 948                                                                       url,
 949                                                                       &data,
 950                                                                       NULL,
 951                                                                       NULL,
 952                                                                       &errCode)) {
 953                                 data = NULL;
 954                         }
 955                         CFRelease(url);
 956                 }
 957         }
 958
 959         if (data != NULL) {
 960                 CFDictionaryRef table;
 961
 962                 table = CFPropertyListCreateWithData(NULL,
 963                                                      data,
 964                                                      kCFPropertyListImmutable,
 965                                                      NULL,
 966                                                      NULL);
 967                 if (table != NULL) {
 968                         if (isA_CFDictionary(table)) {
 969                                 str = CFDictionaryGetValue(table, key);
 970                                 if (str != NULL) {
 971                                         CFRetain(str);
 972                                 }
 973                         }
 974
 975                         CFRelease(table);
 976                 }
 977
 978                 CFRelease(data);
 979         }
 980
 981         if (str == NULL) {
 982                 str = CFRetain(value);
 983         }
 984
 985         return str;
 986 }
 987
 988
 989 #pragma mark -
 990 #pragma mark Mach port / CFMachPort management
 991
 992
 993 CFMachPortRef
 994 _SC_CFMachPortCreateWithPort(const char         *portDescription,
 995                              mach_port_t        portNum,
 996                              CFMachPortCallBack callout,
 997                              CFMachPortContext  *context)
 998 {
 999         CFMachPortRef   port;
1000         Boolean shouldFree      = FALSE;
1001
1002         port = CFMachPortCreateWithPort(NULL, portNum, callout, context, &shouldFree);
1003         if ((port == NULL) || shouldFree) {
1004                 CFStringRef     err;
1005                 char            *crash_info     = NULL;
1006
1007                 SCLog(TRUE, LOG_ERR,
1008                       CFSTR("%s: CFMachPortCreateWithPort() failed , port = %p"),
1009                       portDescription,
1010                       portNum);
1011                 if (port != NULL) {
1012                         err = CFStringCreateWithFormat(NULL, NULL,
1013                                                        CFSTR("%s: CFMachPortCreateWithPort recycled, [old] port = %@"),
1014                                                        portDescription, port);
1015                 } else {
1016                         err = CFStringCreateWithFormat(NULL, NULL,
1017                                                        CFSTR("%s: CFMachPortCreateWithPort returned NULL"),
1018                                                        portDescription);
1019                 }
1020                 crash_info = _SC_cfstring_to_cstring(err, NULL, 0, kCFStringEncodingASCII);
1021                 CFRelease(err);
1022
1023                 err = CFStringCreateWithFormat(NULL,
1024                                                NULL,
1025                                                CFSTR("A recycled mach_port has been detected by \"%s\"."),
1026                                                getprogname());
1027                 _SC_crash(crash_info, CFSTR("CFMachPort error"), err);
1028                 CFAllocatorDeallocate(NULL, crash_info);
1029                 CFRelease(err);
1030         }
1031
1032         return port;
1033 }
1034
1035
1036 #pragma mark -
1037 #pragma mark DOS encoding/codepage
1038
1039
1040 #if     !TARGET_OS_IPHONE
1041 void
1042 _SC_dos_encoding_and_codepage(CFStringEncoding  macEncoding,
1043                               UInt32            macRegion,
1044                               CFStringEncoding  *dosEncoding,
1045                               UInt32            *dosCodepage)
1046 {
1047         switch (macEncoding) {
1048         case kCFStringEncodingMacRoman:
1049                 if (macRegion != 0) /* anything non-zero is not US */
1050                 *dosEncoding = kCFStringEncodingDOSLatin1;
1051                 else /* US region */
1052                 *dosEncoding = kCFStringEncodingDOSLatinUS;
1053                 break;
1054
1055         case kCFStringEncodingMacJapanese:
1056                 *dosEncoding = kCFStringEncodingDOSJapanese;
1057                 break;
1058
1059         case kCFStringEncodingMacChineseTrad:
1060                 *dosEncoding = kCFStringEncodingDOSChineseTrad;
1061                 break;
1062
1063         case kCFStringEncodingMacKorean:
1064                 *dosEncoding = kCFStringEncodingDOSKorean;
1065                 break;
1066
1067         case kCFStringEncodingMacArabic:
1068                 *dosEncoding = kCFStringEncodingDOSArabic;
1069                 break;
1070
1071         case kCFStringEncodingMacHebrew:
1072                 *dosEncoding = kCFStringEncodingDOSHebrew;
1073                 break;
1074
1075         case kCFStringEncodingMacGreek:
1076                 *dosEncoding = kCFStringEncodingDOSGreek;
1077                 break;
1078
1079         case kCFStringEncodingMacCyrillic:
1080                 *dosEncoding = kCFStringEncodingDOSCyrillic;
1081                 break;
1082
1083         case kCFStringEncodingMacThai:
1084                 *dosEncoding = kCFStringEncodingDOSThai;
1085                 break;
1086
1087         case kCFStringEncodingMacChineseSimp:
1088                 *dosEncoding = kCFStringEncodingDOSChineseSimplif;
1089                 break;
1090
1091         case kCFStringEncodingMacCentralEurRoman:
1092                 *dosEncoding = kCFStringEncodingDOSLatin2;
1093                 break;
1094
1095         case kCFStringEncodingMacTurkish:
1096                 *dosEncoding = kCFStringEncodingDOSTurkish;
1097                 break;
1098
1099         case kCFStringEncodingMacCroatian:
1100                 *dosEncoding = kCFStringEncodingDOSLatin2;
1101                 break;
1102
1103         case kCFStringEncodingMacIcelandic:
1104                 *dosEncoding = kCFStringEncodingDOSIcelandic;
1105                 break;
1106
1107         case kCFStringEncodingMacRomanian:
1108                 *dosEncoding = kCFStringEncodingDOSLatin2;
1109                 break;
1110
1111         case kCFStringEncodingMacFarsi:
1112                 *dosEncoding = kCFStringEncodingDOSArabic;
1113                 break;
1114
1115         case kCFStringEncodingMacUkrainian:
1116                 *dosEncoding = kCFStringEncodingDOSCyrillic;
1117                 break;
1118
1119         default:
1120                 *dosEncoding = kCFStringEncodingDOSLatin1;
1121                 break;
1122         }
1123
1124         *dosCodepage = CFStringConvertEncodingToWindowsCodepage(*dosEncoding);
1125         return;
1126 }
1127 #endif  // !TARGET_OS_IPHONE
1128
1129
1130 #pragma mark -
1131 #pragma mark Debugging
1132
1133
1134 /*
1135  * print status of in-use mach ports
1136  */
1137 void
1138 _SC_logMachPortStatus(void)
1139 {
1140         kern_return_t           status;
1141         mach_port_name_array_t  ports;
1142         mach_port_type_array_t  types;
1143         mach_msg_type_number_t  pi, pn, tn;
1144         CFMutableStringRef      str;
1145
1146         SCLog(TRUE, LOG_NOTICE, CFSTR("----------"));
1147
1148         /* report on ALL mach ports associated with this task */
1149         status = mach_port_names(mach_task_self(), &ports, &pn, &types, &tn);
1150         if (status == MACH_MSG_SUCCESS) {
1151                 str = CFStringCreateMutable(NULL, 0);
1152                 for (pi = 0; pi < pn; pi++) {
1153                         char    rights[16], *rp = &rights[0];
1154
1155                         if (types[pi] != MACH_PORT_TYPE_NONE) {
1156                                 *rp++ = ' ';
1157                                 *rp++ = '(';
1158                                 if (types[pi] & MACH_PORT_TYPE_SEND)
1159                                         *rp++ = 'S';
1160                                 if (types[pi] & MACH_PORT_TYPE_RECEIVE)
1161                                         *rp++ = 'R';
1162                                 if (types[pi] & MACH_PORT_TYPE_SEND_ONCE)
1163                                         *rp++ = 'O';
1164                                 if (types[pi] & MACH_PORT_TYPE_PORT_SET)
1165                                         *rp++ = 'P';
1166                                 if (types[pi] & MACH_PORT_TYPE_DEAD_NAME)
1167                                         *rp++ = 'D';
1168                                 *rp++ = ')';
1169                         }
1170                         *rp = '\0';
1171                         CFStringAppendFormat(str, NULL, CFSTR(" %d%s"), ports[pi], rights);
1172                 }
1173                 SCLog(TRUE, LOG_NOTICE, CFSTR("Task ports (n=%d):%@"), pn, str);
1174                 CFRelease(str);
1175         }
1176
1177         return;
1178 }
1179
1180
1181 void
1182 _SC_logMachPortReferences(const char *str, mach_port_t port)
1183 {
1184         const char              *blanks         = "                                                            ";
1185         char                    buf[60];
1186         mach_port_type_t        pt;
1187         mach_port_status_t      recv_status     = { 0 };
1188         mach_port_urefs_t       refs_send       = 0;
1189         mach_port_urefs_t       refs_recv       = 0;
1190         mach_port_urefs_t       refs_once       = 0;
1191         mach_port_urefs_t       refs_pset       = 0;
1192         mach_port_urefs_t       refs_dead       = 0;
1193         kern_return_t           status;
1194
1195         buf[0] = '\0';
1196         if (str != NULL) {
1197                 static int      is_configd      = -1;
1198
1199                 if (is_configd == -1) {
1200                         is_configd = (strcmp(getprogname(), "configd") == 0);
1201                 }
1202                 if (is_configd == 1) {
1203                         // if "configd", add indication if this is the M[ain] or [P]lugin thread
1204                         strlcpy(buf,
1205                                 (CFRunLoopGetMain() == CFRunLoopGetCurrent()) ? "M " : "P ",
1206                                 sizeof(buf));
1207                 }
1208
1209                 // add provided string
1210                 strlcat(buf, str, sizeof(buf));
1211
1212                 // fill
1213                 strlcat(buf, blanks, sizeof(buf));
1214                 if (strcmp(&buf[sizeof(buf) - 3], "  ") == 0) {
1215                         buf[sizeof(buf) - 3] = ':';
1216                 }
1217         }
1218
1219         status = mach_port_type(mach_task_self(), port, &pt);
1220         if (status != KERN_SUCCESS) {
1221                 SCLog(TRUE, LOG_NOTICE,
1222                       CFSTR("%smach_port_get_refs(..., 0x%x, MACH_PORT_RIGHT_SEND): %s"),
1223                       buf,
1224                       port,
1225                       mach_error_string(status));
1226                 return;
1227         }
1228
1229         if ((pt & MACH_PORT_TYPE_SEND) != 0) {
1230                 status = mach_port_get_refs(mach_task_self(), port, MACH_PORT_RIGHT_SEND,      &refs_send);
1231                 if (status != KERN_SUCCESS) {
1232                         SCLog(TRUE, LOG_NOTICE,
1233                               CFSTR("%smach_port_get_refs(..., 0x%x, MACH_PORT_RIGHT_SEND): %s"),
1234                               buf,
1235                               port,
1236                               mach_error_string(status));
1237                         return;
1238                 }
1239         }
1240
1241         if ((pt & MACH_PORT_TYPE_RECEIVE) != 0) {
1242                 mach_msg_type_number_t  count;
1243
1244                 status = mach_port_get_refs(mach_task_self(), port, MACH_PORT_RIGHT_RECEIVE,   &refs_recv);
1245                 if (status != KERN_SUCCESS) {
1246                         SCLog(TRUE, LOG_NOTICE,
1247                               CFSTR("%smach_port_get_refs(..., 0x%x, MACH_PORT_RIGHT_RECEIVE): %s"),
1248                               buf,
1249                               port,
1250                               mach_error_string(status));
1251                         return;
1252                 }
1253
1254                 count = MACH_PORT_RECEIVE_STATUS_COUNT;
1255                 status = mach_port_get_attributes(mach_task_self(),
1256                                                port,
1257                                                MACH_PORT_RECEIVE_STATUS,
1258                                                (mach_port_info_t)&recv_status,
1259                                                &count);
1260                 if (status != KERN_SUCCESS) {
1261                         SCLog(TRUE, LOG_NOTICE,
1262                               CFSTR("%smach_port_get_attributes(..., 0x%x, MACH_PORT_RECEIVE_STATUS): %s"),
1263                               buf,
1264                               port,
1265                               mach_error_string(status));
1266                         return;
1267                 }
1268         }
1269
1270         if ((pt & MACH_PORT_TYPE_SEND_ONCE) != 0) {
1271                 status = mach_port_get_refs(mach_task_self(), port, MACH_PORT_RIGHT_SEND_ONCE, &refs_once);
1272                 if (status != KERN_SUCCESS) {
1273                         SCLog(TRUE, LOG_NOTICE,
1274                               CFSTR("%smach_port_get_refs(..., 0x%x, MACH_PORT_RIGHT_SEND_ONCE): %s"),
1275                               buf,
1276                               port,
1277                               mach_error_string(status));
1278                         return;
1279                 }
1280         }
1281
1282         if ((pt & MACH_PORT_TYPE_PORT_SET) != 0) {
1283                 status = mach_port_get_refs(mach_task_self(), port, MACH_PORT_RIGHT_PORT_SET,  &refs_pset);
1284                 if (status != KERN_SUCCESS) {
1285                         SCLog(TRUE, LOG_NOTICE,
1286                               CFSTR("%smach_port_get_refs(..., 0x%x, MACH_PORT_RIGHT_PORT_SET): %s"),
1287                               buf,
1288                               port,
1289                               mach_error_string(status));
1290                         return;
1291                 }
1292         }
1293
1294         if ((pt & MACH_PORT_TYPE_DEAD_NAME) != 0) {
1295                 status = mach_port_get_refs(mach_task_self(), port, MACH_PORT_RIGHT_DEAD_NAME, &refs_dead);
1296                 if (status != KERN_SUCCESS) {
1297                         SCLog(TRUE, LOG_NOTICE,
1298                               CFSTR("%smach_port_get_refs(..., 0x%x, MACH_PORT_RIGHT_DEAD_NAME): %s"),
1299                               buf,
1300                               port,
1301                               mach_error_string(status));
1302                         return;
1303                 }
1304         }
1305
1306         SCLog(TRUE, LOG_NOTICE,
1307               CFSTR("%smach port 0x%x (%d): send=%d, receive=%d, send once=%d, port set=%d, dead name=%d%s%s"),
1308               buf,
1309               port,
1310               port,
1311               refs_send,
1312               refs_recv,
1313               refs_once,
1314               refs_pset,
1315               refs_dead,
1316               recv_status.mps_nsrequest ? ", no more senders"   : "",
1317               ((pt & MACH_PORT_TYPE_DEAD_NAME) != 0) ? ", dead name request" : "");
1318
1319         return;
1320 }
1321
1322
1323 CFStringRef
1324 _SC_copyBacktrace()
1325 {
1326         int                     n;
1327         void                    *stack[64];
1328         char                    **symbols;
1329         CFMutableStringRef      trace;
1330
1331         n = backtrace(stack, sizeof(stack)/sizeof(stack[0]));
1332         if (n == -1) {
1333                 SCLog(TRUE, LOG_ERR, CFSTR("backtrace() failed: %s"), strerror(errno));
1334                 return NULL;
1335         }
1336
1337         trace = CFStringCreateMutable(NULL, 0);
1338
1339         symbols = backtrace_symbols(stack, n);
1340         if (symbols != NULL) {
1341                 int     i;
1342
1343                 for (i = 0; i < n; i++) {
1344                         CFStringAppendFormat(trace, NULL, CFSTR("%s\n"), symbols[i]);
1345                 }
1346
1347                 free(symbols);
1348         }
1349
1350         return trace;
1351 }
1352
1353
1354 /* CrashReporter info */
1355 const char *__crashreporter_info__ = NULL;
1356 asm(".desc ___crashreporter_info__, 0x10");
1357
1358
1359 static Boolean
1360 _SC_SimulateCrash(const char *crash_info, CFStringRef notifyHeader, CFStringRef notifyMessage)
1361 {
1362         Boolean ok                                                                                      = FALSE;
1363
1364 #if ! TARGET_IPHONE_SIMULATOR
1365         static bool     (*dyfunc_SimulateCrash)(pid_t, mach_exception_data_type_t, CFStringRef) = NULL;
1366         static void     *image                                                                                  = NULL;
1367
1368         if ((dyfunc_SimulateCrash == NULL) && (image == NULL)) {
1369                 const char      *framework      = "/System/Library/PrivateFrameworks/CrashReporterSupport.framework/CrashReporterSupport";
1370                 struct stat     statbuf;
1371                 const char      *suffix = getenv("DYLD_IMAGE_SUFFIX");
1372                 char            path[MAXPATHLEN];
1373
1374                 strlcpy(path, framework, sizeof(path));
1375                 if (suffix) strlcat(path, suffix, sizeof(path));
1376                 if (0 <= stat(path, &statbuf)) {
1377                         image = dlopen(path, RTLD_LAZY | RTLD_LOCAL);
1378                 } else {
1379                         image = dlopen(framework, RTLD_LAZY | RTLD_LOCAL);
1380                 }
1381
1382                 if (image != NULL) {
1383                         dyfunc_SimulateCrash = dlsym(image, "SimulateCrash");
1384                 } else {
1385                         image = (void *)0x1;    // to ensure that we only dlopen() once
1386                 }
1387         }
1388
1389         if (dyfunc_SimulateCrash != NULL) {
1390                 CFStringRef     str;
1391
1392                 str = CFStringCreateWithCString(NULL, crash_info, kCFStringEncodingUTF8);
1393                 ok = dyfunc_SimulateCrash(getpid(), 0xbad0005cull, str);
1394                 CFRelease(str);
1395         }
1396
1397 #if     TARGET_OS_EMBEDDED && !TARGET_OS_EMBEDDED_OTHER && !defined(DO_NOT_INFORM)
1398         if (ok) {
1399                 static Boolean  warned  = FALSE;
1400
1401                 if (!warned) {
1402                         notifyMessage = CFStringCreateWithFormat(NULL,
1403                                                                  NULL,
1404                                                                  CFSTR("%@\n\nPlease collect the crash report and file a Radar."),
1405                                                                  notifyMessage);
1406                         CFUserNotificationDisplayNotice(0,
1407                                                         kCFUserNotificationStopAlertLevel,
1408                                                         NULL,
1409                                                         NULL,
1410                                                         NULL,
1411                                                         notifyHeader,
1412                                                         notifyMessage,
1413                                                         NULL);
1414                         CFRelease(notifyMessage);
1415                         warned = TRUE;
1416                 }
1417         }
1418 #endif  // TARGET_OS_EMBEDDED && !TARGET_OS_EMBEDDED_OTHER && !defined(DO_NOT_INFORM)
1419 #endif /* ! TARGET_IPHONE_SIMULATOR */
1420
1421         return ok;
1422 }
1423
1424
1425 void
1426 _SC_crash(const char *crash_info, CFStringRef notifyHeader, CFStringRef notifyMessage)
1427 {
1428         Boolean ok      = FALSE;
1429
1430         if (crash_info != NULL) {
1431                 __crashreporter_info__ = crash_info;
1432
1433                 SCLog(TRUE, LOG_ERR, CFSTR("%s"), crash_info);
1434         }
1435
1436         if (_SC_isAppleInternal()) {
1437                 // simulate a crash report
1438                 ok = _SC_SimulateCrash(crash_info, notifyHeader, notifyMessage);
1439 #ifndef DO_NOT_CRASH
1440                 if (!ok) {
1441                         // if we could not simulate a crash report, crash for real
1442                         __builtin_trap();
1443                 }
1444 #endif  // DO_NOT_CRASH
1445         }
1446
1447         __crashreporter_info__ = NULL;
1448         return;
1449 }