Plugins/IPMonitor/proxy-configuration.c

   1 /*
   2  * Copyright (c) 2011 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  * January 3, 2011      Allan Nathanson <ajn@apple.com>
  28  * - initial revision
  29  */
  30
  31 #include <TargetConditionals.h>
  32 #include <sys/types.h>
  33 #include <sys/socket.h>
  34 #include <net/if.h>
  35
  36 #include <CoreFoundation/CoreFoundation.h>
  37 #include <SystemConfiguration/SystemConfiguration.h>
  38 #include <SystemConfiguration/SCPrivate.h>
  39 #include <SystemConfiguration/SCValidation.h>
  40
  41
  42 #define DEFAULT_MATCH_ORDER    200000   /* match order for the "default" proxy configuration */
  43
  44
  45 #define PROXY_MATCH_ORDER_KEY   CFSTR("__MATCH_ORDER__")
  46 #define ORDER_KEY               CFSTR("__ORDER__")
  47
  48
  49 static CFBooleanRef     S_proxies_follow_dns    = NULL;
  50
  51
  52 static void
  53 add_proxy(CFMutableArrayRef proxies, CFMutableDictionaryRef proxy)
  54 {
  55         CFIndex         i;
  56         CFIndex         n_proxies;
  57         CFNumberRef     order;
  58
  59         n_proxies = CFArrayGetCount(proxies);
  60         for (i = 0; i < n_proxies; i++) {
  61                 CFDictionaryRef         match_proxy;
  62
  63                 match_proxy = CFArrayGetValueAtIndex(proxies, i);
  64                 if (CFEqual(proxy, match_proxy)) {
  65                         // a real duplicate
  66                         return;
  67                 }
  68         }
  69
  70         order = CFNumberCreate(NULL, kCFNumberIntType, &n_proxies);
  71         CFDictionarySetValue(proxy, ORDER_KEY, order);
  72         CFRelease(order);
  73
  74         CFArrayAppendValue(proxies, proxy);
  75         return;
  76 }
  77
  78
  79 static void
  80 add_supplemental(CFMutableArrayRef proxies, CFDictionaryRef proxy, uint32_t defaultOrder)
  81 {
  82         CFArrayRef      domains;
  83         CFIndex         i;
  84         CFIndex         n_domains;
  85         CFArrayRef      orders;
  86
  87         domains = CFDictionaryGetValue(proxy, kSCPropNetProxiesSupplementalMatchDomains);
  88         n_domains = isA_CFArray(domains) ? CFArrayGetCount(domains) : 0;
  89         if (n_domains == 0) {
  90                 return;
  91         }
  92
  93         orders = CFDictionaryGetValue(proxy, kSCPropNetProxiesSupplementalMatchOrders);
  94         if (orders != NULL) {
  95                 if (!isA_CFArray(orders) || (n_domains != CFArrayGetCount(orders))) {
  96                         return;
  97                 }
  98         }
  99
 100         /*
 101          * yes, this is a "supplemental" proxy configuration, expand
 102          * the match domains and add each to the proxies list.
 103          */
 104         for (i = 0; i < n_domains; i++) {
 105                 CFStringRef             match_domain;
 106                 CFNumberRef             match_order;
 107                 CFMutableDictionaryRef  match_proxy;
 108
 109                 match_domain = CFArrayGetValueAtIndex(domains, i);
 110                 if (!isA_CFString(match_domain)) {
 111                         continue;
 112                 }
 113
 114                 match_proxy = CFDictionaryCreateMutableCopy(NULL, 0, proxy);
 115
 116                 // set supplemental proxy match "domain"
 117                 match_domain = _SC_trimDomain(match_domain);
 118                 if (match_domain != NULL) {
 119                         CFDictionarySetValue(match_proxy, kSCPropNetProxiesSupplementalMatchDomain, match_domain);
 120                         CFRelease(match_domain);
 121                 } else {
 122                         CFDictionaryRemoveValue(match_proxy, kSCPropNetProxiesSupplementalMatchDomain);
 123                 }
 124
 125                 // set supplemental proxy match "order"
 126                 match_order = (orders != NULL) ? CFArrayGetValueAtIndex(orders, i) : NULL;
 127                 if (isA_CFNumber(match_order)) {
 128                         CFDictionarySetValue(match_proxy, PROXY_MATCH_ORDER_KEY, match_order);
 129                 } else {
 130                         CFNumberRef     num;
 131
 132                         num = CFNumberCreate(NULL, kCFNumberIntType, &defaultOrder);
 133                         CFDictionarySetValue(match_proxy, PROXY_MATCH_ORDER_KEY, num);
 134                         CFRelease(num);
 135
 136                         defaultOrder++;         // if multiple domains, maintain ordering
 137                 }
 138
 139                 // remove keys we don't want in a supplemental proxy
 140                 CFDictionaryRemoveValue(match_proxy, kSCPropNetProxiesSupplementalMatchDomains);
 141                 CFDictionaryRemoveValue(match_proxy, kSCPropNetProxiesSupplementalMatchOrders);
 142                 CFDictionaryRemoveValue(match_proxy, kSCPropInterfaceName);
 143
 144                 add_proxy(proxies, match_proxy);
 145                 CFRelease(match_proxy);
 146         }
 147
 148         return;
 149 }
 150
 151
 152 #define N_QUICK 32
 153
 154
 155 static void
 156 add_supplemental_proxies(CFMutableArrayRef proxies, CFDictionaryRef services, CFArrayRef service_order)
 157 {
 158         const void *            keys_q[N_QUICK];
 159         const void **           keys    = keys_q;
 160         CFIndex                 i;
 161         CFIndex                 n_order;
 162         CFIndex                 n_services;
 163         const void *            vals_q[N_QUICK];
 164         const void **           vals    = vals_q;
 165
 166         n_services = isA_CFDictionary(services) ? CFDictionaryGetCount(services) : 0;
 167         if (n_services == 0) {
 168                 return;         // if no services
 169         }
 170
 171         if (n_services > (CFIndex)(sizeof(keys_q) / sizeof(CFTypeRef))) {
 172                 keys = CFAllocatorAllocate(NULL, n_services * sizeof(CFTypeRef), 0);
 173                 vals = CFAllocatorAllocate(NULL, n_services * sizeof(CFTypeRef), 0);
 174         }
 175
 176         n_order = isA_CFArray(service_order) ? CFArrayGetCount(service_order) : 0;
 177
 178         CFDictionaryGetKeysAndValues(services, keys, vals);
 179         for (i = 0; i < n_services; i++) {
 180                 uint32_t                defaultOrder;
 181                 CFDictionaryRef         proxy;
 182                 CFMutableDictionaryRef  proxyWithDNS    = NULL;
 183                 CFDictionaryRef         service         = (CFDictionaryRef)vals[i];
 184
 185                 if (!isA_CFDictionary(service)) {
 186                         continue;
 187                 }
 188
 189                 proxy = CFDictionaryGetValue(service, kSCEntNetProxies);
 190                 if (!isA_CFDictionary(proxy)) {
 191                         continue;
 192                 }
 193
 194                 if ((S_proxies_follow_dns != NULL) && CFBooleanGetValue(S_proxies_follow_dns)) {
 195                         CFDictionaryRef dns;
 196                         CFArrayRef      matchDomains;
 197                         CFArrayRef      matchOrders;
 198
 199                         if (!CFDictionaryContainsKey(proxy, kSCPropNetProxiesSupplementalMatchDomains) &&
 200                             CFDictionaryGetValueIfPresent(service, kSCEntNetDNS, (const void **)&dns) &&
 201                             isA_CFDictionary(dns) &&
 202                             CFDictionaryGetValueIfPresent(dns, kSCPropNetDNSSupplementalMatchDomains, (const void **)&matchDomains) &&
 203                             isA_CFArray(matchDomains)) {
 204                                 proxyWithDNS = CFDictionaryCreateMutableCopy(NULL, 0, proxy);
 205                                 CFDictionarySetValue(proxyWithDNS, kSCPropNetProxiesSupplementalMatchDomains, matchDomains);
 206                                 if (CFDictionaryGetValueIfPresent(dns, kSCPropNetDNSSupplementalMatchOrders, (const void **)&matchOrders) &&
 207                                     isA_CFArray(matchOrders)) {
 208                                         CFDictionarySetValue(proxyWithDNS, kSCPropNetProxiesSupplementalMatchOrders, matchOrders);
 209                                 } else {
 210                                         CFDictionaryRemoveValue(proxyWithDNS, kSCPropNetProxiesSupplementalMatchOrders);
 211                                 }
 212                                 proxy = proxyWithDNS;
 213                         }
 214                 }
 215
 216                 defaultOrder = DEFAULT_MATCH_ORDER
 217                                - (DEFAULT_MATCH_ORDER / 2)
 218                                + ((DEFAULT_MATCH_ORDER / 1000) * i);
 219                 if ((n_order > 0) &&
 220                     !CFArrayContainsValue(service_order, CFRangeMake(0, n_order), keys[i])) {
 221                         // push out services not specified in service order
 222                         defaultOrder += (DEFAULT_MATCH_ORDER / 1000) * n_services;
 223                 }
 224
 225                 add_supplemental(proxies, proxy, defaultOrder);
 226                 if (proxyWithDNS != NULL) CFRelease(proxyWithDNS);
 227         }
 228
 229         if (keys != keys_q) {
 230                 CFAllocatorDeallocate(NULL, keys);
 231                 CFAllocatorDeallocate(NULL, vals);
 232         }
 233
 234         return;
 235 }
 236
 237
 238 static CFComparisonResult
 239 compareBySearchOrder(const void *val1, const void *val2, void *context)
 240 {
 241         CFDictionaryRef proxy1  = (CFDictionaryRef)val1;
 242         CFDictionaryRef proxy2  = (CFDictionaryRef)val2;
 243         CFNumberRef     num1;
 244         CFNumberRef     num2;
 245         uint32_t        order1  = DEFAULT_MATCH_ORDER;
 246         uint32_t        order2  = DEFAULT_MATCH_ORDER;
 247
 248         num1 = CFDictionaryGetValue(proxy1, PROXY_MATCH_ORDER_KEY);
 249         if (!isA_CFNumber(num1) ||
 250             !CFNumberGetValue(num1, kCFNumberIntType, &order1)) {
 251                 order1 = DEFAULT_MATCH_ORDER;
 252         }
 253
 254         num2 = CFDictionaryGetValue(proxy2, PROXY_MATCH_ORDER_KEY);
 255         if (!isA_CFNumber(num2) ||
 256             !CFNumberGetValue(num2, kCFNumberIntType, &order2)) {
 257                 order2 = DEFAULT_MATCH_ORDER;
 258         }
 259
 260         if (order1 == order2) {
 261                 // if same match "order", retain original ordering for configurations
 262                 if (CFDictionaryGetValueIfPresent(proxy1, ORDER_KEY, (const void **)&num1) &&
 263                     CFDictionaryGetValueIfPresent(proxy2, ORDER_KEY, (const void **)&num2) &&
 264                     isA_CFNumber(num1) &&
 265                     isA_CFNumber(num2) &&
 266                     CFNumberGetValue(num1, kCFNumberIntType, &order1) &&
 267                     CFNumberGetValue(num2, kCFNumberIntType, &order2)) {
 268                         if (order1 == order2) {
 269                                 return kCFCompareEqualTo;
 270                         } else {
 271                                 return (order1 < order2) ? kCFCompareLessThan : kCFCompareGreaterThan;
 272                         }
 273                 }
 274
 275                 return kCFCompareEqualTo;
 276         }
 277
 278         return (order1 < order2) ? kCFCompareLessThan : kCFCompareGreaterThan;
 279 }
 280
 281
 282 static __inline__ Boolean
 283 isSupplementalProxy(CFDictionaryRef proxy)
 284 {
 285         if ((proxy != NULL) &&
 286             CFDictionaryContainsKey(proxy, kSCPropNetProxiesSupplementalMatchDomain)) {
 287                 return TRUE;
 288         }
 289
 290         return FALSE;
 291 }
 292
 293
 294 static CFArrayRef
 295 copy_supplemental_proxies(CFArrayRef proxies, Boolean skip)
 296 {
 297         CFIndex                 i;
 298         CFIndex                 n_proxies;
 299         CFMutableArrayRef       supplemental    = NULL;
 300
 301         // iterate over services
 302
 303         n_proxies = isA_CFArray(proxies) ? CFArrayGetCount(proxies) : 0;
 304         for (i = 0; i < n_proxies; i++) {
 305                 CFDictionaryRef         proxy;
 306
 307                 proxy = CFArrayGetValueAtIndex(proxies, i);
 308                 if (!isSupplementalProxy(proxy)) {
 309                         // if not supplemental proxy (i.e. no match domain)
 310                         continue;
 311                 }
 312
 313                 // add [supplemental] proxy entry
 314                 if (supplemental == NULL) {
 315                         supplemental = CFArrayCreateMutable(NULL,
 316                                                             0,
 317                                                             &kCFTypeArrayCallBacks);
 318                 }
 319                 CFArrayAppendValue(supplemental, proxy);
 320         }
 321
 322         return supplemental;
 323 }
 324
 325
 326 static CFDictionaryRef
 327 copy_scoped_proxies(CFDictionaryRef services, CFArrayRef service_order)
 328 {
 329         const void *            keys_q[N_QUICK];
 330         const void **           keys    = keys_q;
 331         CFIndex                 i;
 332         CFIndex                 n_order;
 333         CFIndex                 n_services;
 334         CFMutableArrayRef       order;
 335         CFMutableDictionaryRef  scoped  = NULL;
 336
 337         n_services = isA_CFDictionary(services) ? CFDictionaryGetCount(services) : 0;
 338         if (n_services == 0) {
 339                 return NULL;            // if no services
 340         }
 341
 342         // ensure that we process all services in order
 343
 344         n_order = isA_CFArray(service_order) ? CFArrayGetCount(service_order) : 0;
 345         if (n_order > 0) {
 346                 order = CFArrayCreateMutableCopy(NULL, 0, service_order);
 347         } else{
 348                 order = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
 349         }
 350
 351         if (n_services > (CFIndex)(sizeof(keys_q) / sizeof(CFTypeRef))) {
 352                 keys = CFAllocatorAllocate(NULL, n_services * sizeof(CFTypeRef), 0);
 353         }
 354         CFDictionaryGetKeysAndValues(services, keys, NULL);
 355         for (i = 0; i < n_services; i++) {
 356                 CFStringRef     serviceID = (CFStringRef)keys[i];
 357
 358                 if (!CFArrayContainsValue(order, CFRangeMake(0, n_order), serviceID)) {
 359                         CFArrayAppendValue(order, serviceID);
 360                         n_order++;
 361                 }
 362         }
 363         if (keys != keys_q) {
 364                 CFAllocatorDeallocate(NULL, keys);
 365         }
 366
 367         // iterate over services
 368
 369         for (i = 0; i < n_order; i++) {
 370                 CFDictionaryRef         proxy;
 371                 char                    if_name[IF_NAMESIZE];
 372                 CFStringRef             interface;
 373                 CFMutableDictionaryRef  newProxy;
 374                 CFDictionaryRef         service;
 375                 CFStringRef             serviceID;
 376
 377                 serviceID = CFArrayGetValueAtIndex(order, i);
 378                 service = CFDictionaryGetValue(services, serviceID);
 379                 if (!isA_CFDictionary(service)) {
 380                         // if no service
 381                         continue;
 382                 }
 383
 384                 proxy = CFDictionaryGetValue(service, kSCEntNetProxies);
 385                 if (!isA_CFDictionary(proxy)) {
 386                         // if no proxy
 387                         continue;
 388                 }
 389
 390                 interface = CFDictionaryGetValue(proxy, kSCPropInterfaceName);
 391                 if (interface == NULL) {
 392                         // if no [scoped] interface
 393                         continue;
 394                 }
 395                 if ((scoped != NULL) &&
 396                     CFDictionaryContainsKey(scoped, interface)) {
 397                         // if we've already processed this [scoped] interface
 398                         continue;
 399                 }
 400
 401                 if ((_SC_cfstring_to_cstring(interface,
 402                                              if_name,
 403                                              sizeof(if_name),
 404                                              kCFStringEncodingASCII) == NULL) ||
 405                     ((if_nametoindex(if_name)) == 0)) {
 406                         // if interface index not available
 407                         continue;
 408                 }
 409
 410                 // add [scoped] proxy entry
 411                 // ... and remove keys we don't want in a [scoped] proxy
 412                 CFRetain(interface);
 413                 newProxy = CFDictionaryCreateMutableCopy(NULL, 0, proxy);
 414                 CFDictionaryRemoveValue(newProxy, kSCPropNetProxiesSupplementalMatchDomains);
 415                 CFDictionaryRemoveValue(newProxy, kSCPropNetProxiesSupplementalMatchOrders);
 416                 CFDictionaryRemoveValue(newProxy, kSCPropInterfaceName);
 417                 if (scoped == NULL) {
 418                         scoped = CFDictionaryCreateMutable(NULL,
 419                                                            0,
 420                                                            &kCFTypeDictionaryKeyCallBacks,
 421                                                            &kCFTypeDictionaryValueCallBacks);
 422                 }
 423                 CFDictionarySetValue(scoped, interface, newProxy);
 424                 CFRelease(newProxy);
 425                 CFRelease(interface);
 426         }
 427
 428         CFRelease(order);
 429         return scoped;
 430 }
 431
 432
 433 static void
 434 add_default_proxy(CFMutableArrayRef     proxies,
 435                   CFDictionaryRef       defaultProxy,
 436                   Boolean               *orderAdded)
 437 {
 438         CFMutableDictionaryRef  myDefault;
 439         uint32_t                myOrder = DEFAULT_MATCH_ORDER;
 440         CFNumberRef             order   = NULL;
 441
 442         if (defaultProxy == NULL) {
 443                 myDefault = CFDictionaryCreateMutable(NULL,
 444                                                       0,
 445                                                       &kCFTypeDictionaryKeyCallBacks,
 446                                                       &kCFTypeDictionaryValueCallBacks);
 447         } else {
 448                 myDefault = CFDictionaryCreateMutableCopy(NULL, 0, defaultProxy);
 449                 CFDictionaryRemoveValue(myDefault, kSCPropInterfaceName);
 450                 order = CFDictionaryGetValue(myDefault, PROXY_MATCH_ORDER_KEY);
 451         }
 452
 453         // ensure that the default proxy has a search order
 454
 455         if (!isA_CFNumber(order) ||
 456             !CFNumberGetValue(order, kCFNumberIntType, &myOrder)) {
 457                 myOrder = DEFAULT_MATCH_ORDER;
 458                 order = CFNumberCreate(NULL, kCFNumberIntType, &myOrder);
 459                 CFDictionarySetValue(myDefault, PROXY_MATCH_ORDER_KEY, order);
 460                 CFRelease(order);
 461                 *orderAdded = TRUE;
 462         }
 463
 464         // add the default proxy
 465
 466         add_proxy(proxies, myDefault);
 467         CFRelease(myDefault);
 468         return;
 469 }
 470
 471
 472 static CFComparisonResult
 473 compareDomain(const void *val1, const void *val2, void *context)
 474 {
 475         CFDictionaryRef         proxy1  = (CFDictionaryRef)val1;
 476         CFDictionaryRef         proxy2  = (CFDictionaryRef)val2;
 477         CFStringRef             domain1;
 478         CFStringRef             domain2;
 479         CFArrayRef              labels1 = NULL;
 480         CFArrayRef              labels2 = NULL;
 481         CFIndex                 n1;
 482         CFIndex                 n2;
 483         CFComparisonResult      result;
 484         Boolean                 rev1;
 485         Boolean                 rev2;
 486
 487         // "default" domains sort before "supplemental" domains
 488         domain1 = CFDictionaryGetValue(proxy1, kSCPropNetProxiesSupplementalMatchDomain);
 489         domain2 = CFDictionaryGetValue(proxy2, kSCPropNetProxiesSupplementalMatchDomain);
 490         if (domain1 == NULL) {
 491                 if (domain2 == NULL) {
 492                         return kCFCompareEqualTo;
 493                 }
 494                 return kCFCompareLessThan;
 495         } else if (domain2 == NULL) {
 496                 return kCFCompareGreaterThan;
 497         }
 498
 499         // forward (A, AAAA) domains sort before reverse (PTR) domains
 500         rev1 = CFStringHasSuffix(domain1, CFSTR(".arpa"));
 501         rev2 = CFStringHasSuffix(domain2, CFSTR(".arpa"));
 502         if (rev1 != rev2) {
 503                 if (rev1) {
 504                         return kCFCompareGreaterThan;
 505                 } else {
 506                         return kCFCompareLessThan;
 507                 }
 508         }
 509
 510         labels1 = CFStringCreateArrayBySeparatingStrings(NULL, domain1, CFSTR("."));
 511         n1 = CFArrayGetCount(labels1);
 512
 513         labels2 = CFStringCreateArrayBySeparatingStrings(NULL, domain2, CFSTR("."));
 514         n2 = CFArrayGetCount(labels2);
 515
 516         while ((n1 > 0) && (n2 > 0)) {
 517                 CFStringRef     label1  = CFArrayGetValueAtIndex(labels1, --n1);
 518                 CFStringRef     label2  = CFArrayGetValueAtIndex(labels2, --n2);
 519
 520                 // compare domain labels
 521                 result = CFStringCompare(label1, label2, kCFCompareCaseInsensitive);
 522                 if (result != kCFCompareEqualTo) {
 523                         goto done;
 524                 }
 525         }
 526
 527         // longer labels (corp.apple.com) sort before shorter labels (apple.com)
 528         if (n1 > n2) {
 529                 result = kCFCompareLessThan;
 530                 goto done;
 531         } else if (n1 < n2) {
 532                 result = kCFCompareGreaterThan;
 533                 goto done;
 534         }
 535
 536         // sort by search order
 537         result = compareBySearchOrder(val1, val2, context);
 538
 539     done :
 540
 541         if (labels1 != NULL) CFRelease(labels1);
 542         if (labels2 != NULL) CFRelease(labels2);
 543         return result;
 544 }
 545
 546
 547 __private_extern__
 548 CFDictionaryRef
 549 proxy_configuration_update(CFDictionaryRef      defaultProxy,
 550                            CFDictionaryRef      services,
 551                            CFArrayRef           serviceOrder)
 552 {
 553         CFIndex                 i;
 554         CFMutableDictionaryRef  myDefault;
 555         Boolean                 myOrderAdded    = FALSE;
 556         CFMutableDictionaryRef  newProxy        = NULL;
 557         CFIndex                 n_proxies;
 558         CFDictionaryRef         proxy;
 559         CFMutableArrayRef       proxies;
 560
 561         SCLog(TRUE, LOG_DEBUG, CFSTR("defaultProxy : %@"), defaultProxy ? defaultProxy : (CFTypeRef)CFSTR("NULL"));
 562         SCLog(TRUE, LOG_DEBUG, CFSTR("services : %@"), services ? services : (CFTypeRef)CFSTR("NULL"));
 563         SCLog(TRUE, LOG_DEBUG, CFSTR("serviceOrder : %@"), serviceOrder ? serviceOrder : (CFTypeRef)CFSTR("NULL"));
 564
 565         // establish full list of proxies
 566
 567         proxies = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
 568
 569         // collect (and add) any "supplemental" proxy configurations
 570
 571         add_supplemental_proxies(proxies, services, serviceOrder);
 572
 573         // add the "default" proxy
 574
 575         add_default_proxy(proxies, defaultProxy, &myOrderAdded);
 576
 577         // sort proxies, cleanup
 578
 579         n_proxies = CFArrayGetCount(proxies);
 580         if (n_proxies > 1) {
 581                 CFArraySortValues(proxies, CFRangeMake(0, n_proxies), compareDomain, NULL);
 582         }
 583
 584         // cleanup
 585
 586         for (i = n_proxies - 1; i >= 0; i--) {
 587                 proxy = CFArrayGetValueAtIndex(proxies, i);
 588
 589                 if ((i > 0) &&
 590                     !CFDictionaryContainsKey(proxy, kSCPropNetProxiesSupplementalMatchDomain)) {
 591                         // remove non-supplemental proxy
 592                         CFArrayRemoveValueAtIndex(proxies, i);
 593                         n_proxies--;
 594                         continue;
 595                 }
 596
 597                 newProxy = CFDictionaryCreateMutableCopy(NULL, 0, proxy);
 598                 CFDictionaryRemoveValue(newProxy, PROXY_MATCH_ORDER_KEY);
 599                 CFDictionaryRemoveValue(newProxy, ORDER_KEY);
 600                 CFArraySetValueAtIndex(proxies, i, newProxy);
 601                 CFRelease(newProxy);
 602         }
 603
 604         // update the default proxy
 605
 606         myDefault = CFDictionaryCreateMutableCopy(NULL,
 607                                                   0,
 608                                                   CFArrayGetValueAtIndex(proxies, 0));
 609         if (myOrderAdded && (n_proxies > 1)) {
 610                 CFDictionaryRef proxy;
 611
 612                 proxy = CFArrayGetValueAtIndex(proxies, 1);
 613                 if (CFDictionaryContainsKey(proxy, kSCPropNetProxiesSupplementalMatchDomain)) {
 614                         // if not a supplemental "default" proxy (a match domain name is
 615                         // present)
 616                         CFDictionaryRemoveValue(myDefault, PROXY_MATCH_ORDER_KEY);
 617                 }
 618         }
 619         CFArraySetValueAtIndex(proxies, 0, myDefault);
 620         CFRelease(myDefault);
 621
 622         // establish proxy configuration
 623
 624         if (n_proxies > 0) {
 625                 CFDictionaryRef         scoped;
 626                 Boolean                 skip    = FALSE;
 627                 CFArrayRef              supplemental;
 628
 629                 proxy = CFArrayGetValueAtIndex(proxies, 0);
 630                 if (!CFDictionaryContainsKey(proxy, kSCPropNetProxiesSupplementalMatchDomain)) {
 631                         // if we have "a" default (non-supplemental) proxy
 632                         newProxy = CFDictionaryCreateMutableCopy(NULL, 0, proxy);
 633                         CFDictionaryRemoveValue(newProxy, kSCPropNetProxiesSupplementalMatchDomains);
 634                         CFDictionaryRemoveValue(newProxy, kSCPropNetProxiesSupplementalMatchOrders);
 635                         skip = TRUE;
 636                 } else {
 637                         newProxy = CFDictionaryCreateMutable(NULL,
 638                                                              0,
 639                                                              &kCFTypeDictionaryKeyCallBacks,
 640                                                              &kCFTypeDictionaryValueCallBacks);
 641                 }
 642
 643                 // collect (and add) any "supplemental" proxy configurations
 644
 645                 supplemental = copy_supplemental_proxies(proxies, skip);
 646                 if (supplemental != NULL) {
 647                         CFDictionarySetValue(newProxy, kSCPropNetProxiesSupplemental, supplemental);
 648                         CFRelease(supplemental);
 649                 }
 650
 651                 // collect (and add) any "scoped" proxy configurations
 652
 653                 scoped = copy_scoped_proxies(services, serviceOrder);
 654                 if (scoped != NULL) {
 655                         CFDictionarySetValue(newProxy, kSCPropNetProxiesScoped, scoped);
 656                         CFRelease(scoped);
 657                 }
 658         } else {
 659                 newProxy = NULL;
 660         }
 661
 662         CFRelease(proxies);
 663         return newProxy;
 664 }
 665
 666
 667 __private_extern__
 668 void
 669 proxy_configuration_init(CFBundleRef bundle)
 670 {
 671         CFDictionaryRef dict;
 672
 673         dict = CFBundleGetInfoDictionary(bundle);
 674         if (isA_CFDictionary(dict)) {
 675                 S_proxies_follow_dns = CFDictionaryGetValue(dict, CFSTR("SupplementalProxiesFollowSupplementalDNS"));
 676                 S_proxies_follow_dns = isA_CFBoolean(S_proxies_follow_dns);
 677         }
 678
 679         return;
 680 }
 681
 682
 683 #ifdef  MAIN
 684
 685 static void
 686 mergeDict(const void *key, const void *value, void *context)
 687 {
 688         CFMutableDictionaryRef  newDict = (CFMutableDictionaryRef)context;
 689
 690         CFDictionarySetValue(newDict, key, value);
 691         return;
 692 }
 693
 694
 695 static void
 696 split(const void * key, const void * value, void * context)
 697 {
 698         CFArrayRef              components;
 699         CFStringRef             entity_id;
 700         CFStringRef             service_id;
 701         CFMutableDictionaryRef  state_dict;
 702
 703         components = CFStringCreateArrayBySeparatingStrings(NULL, (CFStringRef)key, CFSTR("/"));
 704         service_id = CFArrayGetValueAtIndex(components, 3);
 705         entity_id  = CFArrayGetValueAtIndex(components, 4);
 706         state_dict = (CFMutableDictionaryRef)CFDictionaryGetValue(context, service_id);
 707         if (state_dict != NULL) {
 708                 state_dict = CFDictionaryCreateMutableCopy(NULL, 0, state_dict);
 709         } else {
 710                 state_dict = CFDictionaryCreateMutable(NULL,
 711                                                        0,
 712                                                        &kCFTypeDictionaryKeyCallBacks,
 713                                                        &kCFTypeDictionaryValueCallBacks);
 714         }
 715
 716         if (CFEqual(entity_id, kSCEntNetIPv4) ||
 717             CFEqual(entity_id, kSCEntNetIPv6)) {
 718                 CFStringRef     interface;
 719
 720                 interface = CFDictionaryGetValue((CFDictionaryRef)value, kSCPropInterfaceName);
 721                 if (interface != NULL) {
 722                         CFDictionaryRef         proxy;
 723                         CFMutableDictionaryRef  new_proxy;
 724
 725                         proxy = CFDictionaryGetValue(state_dict, kSCEntNetProxies);
 726                         if (proxy != NULL) {
 727                                 new_proxy = CFDictionaryCreateMutableCopy(NULL, 0, proxy);
 728                         } else {
 729                                 new_proxy = CFDictionaryCreateMutable(NULL,
 730                                                                 0,
 731                                                                 &kCFTypeDictionaryKeyCallBacks,
 732                                                                 &kCFTypeDictionaryValueCallBacks);
 733                         }
 734                         CFDictionarySetValue(new_proxy, kSCPropInterfaceName, interface);
 735                         CFDictionarySetValue(state_dict, kSCEntNetProxies, new_proxy);
 736                         CFRelease(new_proxy);
 737                 }
 738         } else if (CFEqual(entity_id, kSCEntNetProxies)) {
 739                 CFDictionaryRef proxy;
 740
 741                 proxy = CFDictionaryGetValue(state_dict, kSCEntNetProxies);
 742                 if (proxy != NULL) {
 743                         CFStringRef             domain;
 744                         CFMutableDictionaryRef  new_proxy;
 745
 746                         // if we already have some Setup: or State: proxy content
 747                         domain = CFArrayGetValueAtIndex(components, 0);
 748                         if (CFEqual(domain, kSCDynamicStoreDomainState)) {
 749                                 // if we've already seen the Setup: key
 750                                 new_proxy = CFDictionaryCreateMutableCopy(NULL, 0, (CFDictionaryRef)value);
 751                                 CFDictionaryApplyFunction(proxy, mergeDict, new_proxy);
 752                         } else {
 753                                 // if we've already seen the State: key
 754                                 new_proxy = CFDictionaryCreateMutableCopy(NULL, 0, proxy);
 755                                 CFDictionaryApplyFunction((CFDictionaryRef)value, mergeDict, new_proxy);
 756                         }
 757                         CFDictionarySetValue(state_dict, kSCEntNetProxies, new_proxy);
 758                         CFRelease(new_proxy);
 759                 } else {
 760                         CFDictionarySetValue(state_dict, kSCEntNetProxies, (CFDictionaryRef)value);
 761                 }
 762         } else {
 763                 CFDictionarySetValue(state_dict, entity_id, (CFDictionaryRef)value);
 764         }
 765
 766         CFDictionarySetValue((CFMutableDictionaryRef)context, service_id, state_dict);
 767         CFRelease(state_dict);
 768         CFRelease(components);
 769
 770         return;
 771 }
 772
 773 int
 774 main(int argc, char **argv)
 775 {
 776         CFDictionaryRef         entities;
 777         CFStringRef             key;
 778         CFDictionaryRef         newProxy        = NULL;
 779         CFStringRef             pattern;
 780         CFMutableArrayRef       patterns;
 781         CFStringRef             primary         = NULL;
 782         CFMutableDictionaryRef  primary_proxy   = NULL;
 783         CFArrayRef              service_order   = NULL;
 784         CFMutableDictionaryRef  service_state_dict;
 785         CFDictionaryRef         setup_global_ipv4;
 786         CFDictionaryRef         state_global_ipv4;
 787         SCDynamicStoreRef       store;
 788
 789         _sc_log     = FALSE;
 790         _sc_verbose = (argc > 1) ? TRUE : FALSE;
 791
 792         store = SCDynamicStoreCreate(NULL, CFSTR("TEST"), NULL, NULL);
 793
 794         // get IPv4, IPv6, and Proxies entities
 795         patterns = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
 796         pattern = SCDynamicStoreKeyCreateNetworkServiceEntity(NULL,
 797                                                               kSCDynamicStoreDomainState,
 798                                                               kSCCompAnyRegex,
 799                                                               kSCEntNetIPv4);
 800         CFArrayAppendValue(patterns, pattern);
 801         CFRelease(pattern);
 802         pattern = SCDynamicStoreKeyCreateNetworkServiceEntity(NULL,
 803                                                               kSCDynamicStoreDomainState,
 804                                                               kSCCompAnyRegex,
 805                                                               kSCEntNetIPv6);
 806         CFArrayAppendValue(patterns, pattern);
 807         CFRelease(pattern);
 808         pattern = SCDynamicStoreKeyCreateNetworkServiceEntity(NULL,
 809                                                               kSCDynamicStoreDomainSetup,
 810                                                               kSCCompAnyRegex,
 811                                                               kSCEntNetProxies);
 812         CFArrayAppendValue(patterns, pattern);
 813         CFRelease(pattern);
 814         pattern = SCDynamicStoreKeyCreateNetworkServiceEntity(NULL,
 815                                                               kSCDynamicStoreDomainState,
 816                                                               kSCCompAnyRegex,
 817                                                               kSCEntNetProxies);
 818         CFArrayAppendValue(patterns, pattern);
 819         CFRelease(pattern);
 820         entities = SCDynamicStoreCopyMultiple(store, NULL, patterns);
 821         CFRelease(patterns);
 822
 823         service_state_dict = CFDictionaryCreateMutable(NULL,
 824                                                        0,
 825                                                        &kCFTypeDictionaryKeyCallBacks,
 826                                                        &kCFTypeDictionaryValueCallBacks);
 827         CFDictionaryApplyFunction(entities, split, service_state_dict);
 828         CFRelease(entities);
 829
 830         // get primary service ID
 831         key = SCDynamicStoreKeyCreateNetworkGlobalEntity(NULL,
 832                                                          kSCDynamicStoreDomainState,
 833                                                          kSCEntNetIPv4);
 834         state_global_ipv4 = SCDynamicStoreCopyValue(store, key);
 835         CFRelease(key);
 836         if (state_global_ipv4 != NULL) {
 837                 primary = CFDictionaryGetValue(state_global_ipv4, kSCDynamicStorePropNetPrimaryService);
 838                 if (primary != NULL) {
 839                         CFDictionaryRef service_dict;
 840
 841                         // get proxy configuration for primary service
 842                         service_dict = CFDictionaryGetValue(service_state_dict, primary);
 843                         if (service_dict != NULL) {
 844                                 CFDictionaryRef service_proxy;
 845
 846                                 service_proxy = CFDictionaryGetValue(service_dict, kSCEntNetProxies);
 847                                 if (service_proxy != NULL) {
 848                                         primary_proxy = CFDictionaryCreateMutableCopy(NULL, 0, service_proxy);
 849                                         CFDictionaryRemoveValue(primary_proxy, kSCPropInterfaceName);
 850                                 }
 851                         }
 852                 }
 853         }
 854
 855         // get serviceOrder
 856         key = SCDynamicStoreKeyCreateNetworkGlobalEntity(NULL,
 857                                                          kSCDynamicStoreDomainSetup,
 858                                                          kSCEntNetIPv4);
 859         setup_global_ipv4 = SCDynamicStoreCopyValue(store, key);
 860         CFRelease(key);
 861         if (setup_global_ipv4 != NULL) {
 862                 service_order = CFDictionaryGetValue(setup_global_ipv4, kSCPropNetServiceOrder);
 863         }
 864
 865         // update proxy configuration
 866         proxy_configuration_init(CFBundleGetMainBundle());
 867         newProxy = proxy_configuration_update(primary_proxy,
 868                                               service_state_dict,
 869                                               service_order);
 870         if (newProxy != NULL) {
 871                 SCPrint(TRUE, stdout, CFSTR("%@\n"), newProxy);
 872                 CFRelease(newProxy);
 873         }
 874
 875         // cleanup
 876         if (setup_global_ipv4 != NULL)  CFRelease(setup_global_ipv4);
 877         if (state_global_ipv4 != NULL)  CFRelease(state_global_ipv4);
 878         CFRelease(service_state_dict);
 879         CFRelease(store);
 880
 881         /* not reached */
 882         exit(0);
 883         return 0;
 884 }
 885 #endif
 886