scutil.tproj/scutil.c

   1 /*
   2  * Copyright (c) 2000-2020 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 13, 2005                Allan Nathanson <ajn@apple.com>
  28  * - added SCPreferences support
  29  *
  30  * August 4, 2004               Allan Nathanson <ajn@apple.com>
  31  * - added network configuration (prefs) support
  32  *
  33  * September 25, 2002           Allan Nathanson <ajn@apple.com>
  34  * - added command line history & editing
  35  *
  36  * July 9, 2001                 Allan Nathanson <ajn@apple.com>
  37  * - added "-r" option for checking network reachability
  38  * - added "-w" option to check/wait for the presence of a
  39  *   dynamic store key.
  40  *
  41  * June 1, 2001                 Allan Nathanson <ajn@apple.com>
  42  * - public API conversion
  43  *
  44  * November 9, 2000             Allan Nathanson <ajn@apple.com>
  45  * - initial revision
  46  */
  47
  48 #include <TargetConditionals.h>
  49 #include <ctype.h>
  50 #include <getopt.h>
  51 #include <stdio.h>
  52 #include <stdlib.h>
  53 #include <string.h>
  54 #include <termios.h>
  55 #include <unistd.h>
  56 #include <sysexits.h>
  57
  58 #ifdef  DEBUG
  59 #include <mach/mach.h>
  60 #include <mach/mach_error.h>
  61 #endif  /* DEBUG */
  62
  63 #include "scutil.h"
  64 #include "commands.h"
  65 #include "dictionary.h"
  66 #include "net.h"
  67 #include "nc.h"
  68 #include "prefs.h"
  69 #include "session.h"
  70 #include "tests.h"
  71
  72 #define LINE_LENGTH 2048
  73
  74 __private_extern__ AuthorizationRef     authorization   = NULL;
  75 __private_extern__ InputRef             currentInput    = NULL;
  76 __private_extern__ Boolean              doDispatch      = FALSE;
  77 __private_extern__ int                  nesting         = 0;
  78 __private_extern__ SCPreferencesRef     ni_prefs        = NULL;
  79 __private_extern__ CFRunLoopRef         notifyRl        = NULL;
  80 __private_extern__ CFRunLoopSourceRef   notifyRls       = NULL;
  81 __private_extern__ SCPreferencesRef     prefs           = NULL;
  82 __private_extern__ char                 *prefsPath      = NULL;
  83 __private_extern__ SCDynamicStoreRef    store           = NULL;
  84 __private_extern__ CFPropertyListRef    value           = NULL;
  85 __private_extern__ CFMutableArrayRef    watchedKeys     = NULL;
  86 __private_extern__ CFMutableArrayRef    watchedPatterns = NULL;
  87
  88 static const struct option longopts[] = {
  89 //      { "debug",              no_argument,            NULL,   'd'     },
  90 //      { "dispatch",           no_argument,            NULL,   'D'     },
  91 //      { "verbose",            no_argument,            NULL,   'v'     },
  92 //      { "SPI",                no_argument,            NULL,   'p'     },
  93 //      { "check-reachability", required_argument,      NULL,   'r'     },
  94 //      { "timeout",            required_argument,      NULL,   't'     },
  95 //      { "wait-key",           required_argument,      NULL,   'w'     },
  96 //      { "watch-reachability", no_argument,            NULL,   'W'     },
  97         { "dns",                no_argument,            NULL,   0       },
  98         { "get",                required_argument,      NULL,   0       },
  99         { "error",              required_argument,      NULL,   0       },
 100         { "help",               no_argument,            NULL,   '?'     },
 101         { "nc",                 required_argument,      NULL,   0       },
 102         { "net",                no_argument,            NULL,   0       },
 103         { "nwi",                no_argument,            NULL,   0       },
 104         { "prefs",              no_argument,            NULL,   0       },
 105         { "proxy",              no_argument,            NULL,   0       },
 106         { "renew",              required_argument,      NULL,   0       },
 107         { "set",                required_argument,      NULL,   0       },
 108         { "snapshot",           no_argument,            NULL,   0       },
 109         { "user",               required_argument,      NULL,   0       },
 110         { "password",           required_argument,      NULL,   0       },
 111         { "secret",             required_argument,      NULL,   0       },
 112         { "log",                required_argument,      NULL,   0       },
 113         { "advisory",           required_argument,      NULL,   0       },
 114 #if     !TARGET_OS_IPHONE
 115         { "allow-new-interfaces", no_argument,          NULL,   0       },
 116 #endif  // !TARGET_OS_IPHONE
 117         { "disable-until-needed", no_argument,          NULL,   0       },
 118         { NULL,                 0,                      NULL,   0       }
 119 };
 120
 121
 122 __private_extern__
 123 CFStringRef
 124 _copyStringFromSTDIN(CFStringRef prompt, CFStringRef defaultValue)
 125 {
 126         char            buf[1024];
 127         int             i;
 128         Boolean         is_user_prompt = (prompt != NULL && isatty(STDIN_FILENO) && isatty(STDOUT_FILENO));
 129         int             len;
 130         char            *modbuf;
 131         int             modlen;
 132         CFStringRef     utf8;
 133
 134         /* Print out a prompt to user that entry is desired */
 135         if (is_user_prompt) {
 136                 if (defaultValue != NULL) {
 137                         SCPrint(TRUE, stdout, CFSTR("%@ [%@]: "), prompt, defaultValue);
 138                 } else {
 139                         SCPrint(TRUE, stdout, CFSTR("%@: "), prompt);
 140                 }
 141         }
 142
 143         /* Get user input */
 144         if (fgets(buf, sizeof(buf), stdin) == NULL) {
 145                 return NULL;
 146         }
 147
 148         /* Prepare for trim */
 149         len = (int)strlen(buf);
 150         modbuf = buf;
 151         modlen = len;
 152
 153         /* Trim new-line */
 154         if ((modlen > 0) && (modbuf[modlen - 1] == '\n')) {
 155                 modbuf[modlen - 1] = '\0';
 156                 modlen--;
 157         }
 158
 159         /* If nothing was entered at the user prompt, set default */
 160         if (is_user_prompt && defaultValue != NULL && modlen == 0) {
 161                 CFRetain(defaultValue);
 162                 return defaultValue;
 163         }
 164
 165         /* Trim spaces from front */
 166         while (modlen > 0 && isspace(modbuf[0])) {
 167                 modbuf = &modbuf[1];
 168                 modlen--;
 169         }
 170
 171         /* Trim spaces from back */
 172         for (i = modlen - 1; i >= 0; i--) {
 173                 if (isspace(buf[i])) {
 174                         buf[i] = '\0';
 175                         modlen--;
 176                 } else {
 177                         break;
 178                 }
 179         }
 180
 181         utf8 = CFStringCreateWithBytes(NULL, (UInt8 *)modbuf, modlen, kCFStringEncodingUTF8, TRUE);
 182         return utf8;
 183 }
 184
 185 static char *
 186 getLine(char *buf, int len, InputRef src)
 187 {
 188         int     n;
 189
 190         if (src->el) {
 191                 int             count;
 192                 const char      *line;
 193
 194                 line = el_gets(src->el, &count);
 195                 if (line == NULL)
 196                         return NULL;
 197
 198                 strlcpy(buf, line, len);
 199         } else {
 200                 if (fgets(buf, len, src->fp) == NULL)
 201                         return NULL;
 202         }
 203
 204         n = (int)strlen(buf);
 205         if (buf[n-1] == '\n') {
 206                 /* the entire line fit in the buffer, remove the newline */
 207                 buf[n-1] = '\0';
 208         } else if (!src->el) {
 209                 /* eat the remainder of the line */
 210                 do {
 211                         n = fgetc(src->fp);
 212                 } while ((n != '\n') && (n != EOF));
 213         }
 214
 215         if (src->h && (buf[0] != '\0')) {
 216                 HistEvent       ev;
 217
 218                 history(src->h, &ev, H_ENTER, buf);
 219         }
 220
 221         return buf;
 222 }
 223
 224
 225 static char *
 226 getString(char **line)
 227 {
 228         char *s, *e, c, *string;
 229         int i, isQuoted = 0, escaped = 0;
 230
 231         if (*line == NULL) return NULL;
 232         if (**line == '\0') return NULL;
 233
 234         /* Skip leading white space */
 235         while (isspace(**line)) *line += 1;
 236
 237         /* Grab the next string */
 238         s = *line;
 239         if (*s == '\0') {
 240                 return NULL;                            /* no string available */
 241         } else if (*s == '"') {
 242                 isQuoted = 1;                           /* it's a quoted string */
 243                 s++;
 244         }
 245
 246         for (e = s; (c = *e) != '\0'; e++) {
 247                 if (isQuoted && (c == '"'))
 248                         break;                          /* end of quoted string */
 249                 if (c == '\\') {
 250                         e++;
 251                         if (*e == '\0')
 252                                 break;                  /* if premature end-of-string */
 253                         if ((*e == '"') || isspace(*e))
 254                                 escaped++;              /* if escaped quote or white space */
 255                 }
 256                 if (!isQuoted && isspace(c))
 257                         break;                          /* end of non-quoted string */
 258         }
 259
 260         string = malloc(e - s - escaped + 1);
 261
 262         for (i = 0; s < e; s++) {
 263                 string[i] = *s;
 264                 if (!((s[0] == '\\') && ((s[1] == '"') || isspace(s[1])))) i++;
 265         }
 266         string[i] = '\0';
 267
 268         if (isQuoted)
 269                 e++;                                    /* move past end of quoted string */
 270
 271         *line = e;
 272         return string;
 273 }
 274
 275
 276 __private_extern__
 277 Boolean
 278 process_line(InputRef src)
 279 {
 280         char    *arg;
 281         int     argc                    = 0;
 282         char    **argv                  = NULL;
 283         int     i;
 284         char    line[LINE_LENGTH];
 285         char    *s                      = line;
 286
 287         // if end-of-file, exit
 288         if (getLine(line, sizeof(line), src) == NULL)
 289                 return FALSE;
 290
 291         if (nesting > 0) {
 292                 SCPrint(TRUE, stdout, CFSTR("%d> %s\n"), nesting, line);
 293         }
 294
 295         // break up the input line
 296         while ((arg = getString(&s)) != NULL) {
 297                 if (argc == 0)
 298                         argv = (char **)malloc(2 * sizeof(char *));
 299                 else
 300                         argv = (char **)reallocf(argv, ((argc + 2) * sizeof(char *)));
 301                 argv[argc++] = arg;
 302         }
 303
 304         if (argc == 0) {
 305                 return TRUE;            // if no arguments
 306         }
 307
 308         /* process the command */
 309         if (*argv[0] != '#') {
 310                 argv[argc] = NULL;      // just in case...
 311                 currentInput = src;
 312                 do_command(argc, argv);
 313         }
 314
 315         /* free the arguments */
 316         for (i = 0; i < argc; i++) {
 317                 free(argv[i]);
 318         }
 319         free(argv);
 320
 321         return !termRequested;
 322 }
 323
 324
 325 static void
 326 usage(const char *command)
 327 {
 328         SCPrint(TRUE, stderr, CFSTR("usage: %s\n"), command);
 329         SCPrint(TRUE, stderr, CFSTR("\tinteractive access to the dynamic store.\n"));
 330         SCPrint(TRUE, stderr, CFSTR("\n"));
 331         SCPrint(TRUE, stderr, CFSTR("   or: %s --prefs [preference-file]\n"), command);
 332         SCPrint(TRUE, stderr, CFSTR("\tinteractive access to the [raw] stored preferences.\n"));
 333         SCPrint(TRUE, stderr, CFSTR("\n"));
 334         SCPrint(TRUE, stderr, CFSTR("   or: %s [-W] -r nodename\n"), command);
 335         SCPrint(TRUE, stderr, CFSTR("   or: %s [-W] -r address\n"), command);
 336         SCPrint(TRUE, stderr, CFSTR("   or: %s [-W] -r local-address remote-address\n"), command);
 337         SCPrint(TRUE, stderr, CFSTR("\tcheck reachability of node, address, or address pair (-W to \"watch\").\n"));
 338         SCPrint(TRUE, stderr, CFSTR("\n"));
 339         SCPrint(TRUE, stderr, CFSTR("   or: %s -w dynamic-store-key [ -t timeout ]\n"), command);
 340         SCPrint(TRUE, stderr, CFSTR("\t-w\twait for presense of dynamic store key\n"));
 341         SCPrint(TRUE, stderr, CFSTR("\t-t\ttime to wait for key\n"));
 342         SCPrint(TRUE, stderr, CFSTR("\n"));
 343         SCPrint(TRUE, stderr, CFSTR("   or: %s --get pref\n"), command);
 344         SCPrint(TRUE, stderr, CFSTR("   or: %s --set pref [newval]\n"), command);
 345         SCPrint(TRUE, stderr, CFSTR("   or: %s --get filename path key  \n"), command);
 346         SCPrint(TRUE, stderr, CFSTR("\tpref\tdisplay (or set) the specified preference.  Valid preferences\n"));
 347         SCPrint(TRUE, stderr, CFSTR("\t\tinclude:\n"));
 348         SCPrint(TRUE, stderr, CFSTR("\t\t\tComputerName, LocalHostName, HostName\n"));
 349         SCPrint(TRUE, stderr, CFSTR("\tnewval\tNew preference value to be set.  If not specified,\n"));
 350         SCPrint(TRUE, stderr, CFSTR("\t\tthe new value will be read from standard input.\n"));
 351         SCPrint(TRUE, stderr, CFSTR("\n"));
 352         SCPrint(TRUE, stderr, CFSTR("   or: %s --dns\n"), command);
 353         SCPrint(TRUE, stderr, CFSTR("\tshow DNS configuration.\n"));
 354         SCPrint(TRUE, stderr, CFSTR("\n"));
 355         SCPrint(TRUE, stderr, CFSTR("   or: %s --proxy\n"), command);
 356         SCPrint(TRUE, stderr, CFSTR("\tshow \"proxy\" configuration.\n"));
 357         SCPrint(TRUE, stderr, CFSTR("\n"));
 358         SCPrint(TRUE, stderr, CFSTR("   or: %s --nwi\n"), command);
 359         SCPrint(TRUE, stderr, CFSTR("\tshow network information\n"));
 360         SCPrint(TRUE, stderr, CFSTR("\n"));
 361         SCPrint(TRUE, stderr, CFSTR("   or: %s --nc\n"), command);
 362         SCPrint(TRUE, stderr, CFSTR("\tshow VPN network configuration information. Use --nc help for full command list\n"));
 363
 364         if (_sc_debug) {
 365                 SCPrint(TRUE, stderr, CFSTR("\n"));
 366                 SCPrint(TRUE, stderr, CFSTR("   or: %s --log IPMonitor [off|on]\n"), command);
 367                 SCPrint(TRUE, stderr, CFSTR("\tmanage logging.\n"));
 368
 369                 SCPrint(TRUE, stderr, CFSTR("\n"));
 370                 SCPrint(TRUE, stderr, CFSTR("   or: %s --disable-until-needed <interfaceName> [on|off ]\n"), command);
 371                 SCPrint(TRUE, stderr, CFSTR("\tmanage secondary interface demand.\n"));
 372         }
 373
 374 #if     !TARGET_OS_IPHONE
 375         SCPrint(TRUE, stderr, CFSTR("\n"));
 376         SCPrint(TRUE, stderr, CFSTR("   or: %s --allow-new-interfaces [off|on]\n"), command);
 377         SCPrint(TRUE, stderr, CFSTR("\tmanage new interface creation with screen locked.\n"));
 378 #endif  // !TARGET_OS_IPHONE
 379
 380         if (getenv("ENABLE_EXPERIMENTAL_SCUTIL_COMMANDS")) {
 381                 SCPrint(TRUE, stderr, CFSTR("\n"));
 382                 SCPrint(TRUE, stderr, CFSTR("   or: %s --net\n"), command);
 383                 SCPrint(TRUE, stderr, CFSTR("\tmanage network configuration.\n"));
 384         }
 385
 386         SCPrint(TRUE, stderr, CFSTR("\n"));
 387         SCPrint(TRUE, stderr, CFSTR("   or: %s --error err#\n"), command);
 388         SCPrint(TRUE, stderr, CFSTR("\tdisplay a descriptive message for the given error code\n"));
 389
 390         exit (EX_USAGE);
 391 }
 392
 393
 394 static char *
 395 prompt(EditLine *el)
 396 {
 397 #pragma unused(el)
 398 #if     !TARGET_OS_SIMULATOR
 399         return "> ";
 400 #else   // !TARGET_OS_SIMULATOR
 401         return "sim> ";
 402 #endif  // !TARGET_OS_SIMULATOR
 403 }
 404
 405
 406 int
 407 main(int argc, char * const argv[])
 408 {
 409 #if     !TARGET_OS_IPHONE
 410         Boolean                 allowNewInterfaces      = FALSE;
 411 #endif  // !TARGET_OS_IPHONE
 412         Boolean                 disableUntilNeeded      = FALSE;
 413         const char *            advisoryInterface       = NULL;
 414         Boolean                 doAdvisory              = FALSE;
 415         Boolean                 doDNS                   = FALSE;
 416         Boolean                 doNet                   = FALSE;
 417         Boolean                 doNWI                   = FALSE;
 418         Boolean                 doPrefs                 = FALSE;
 419         Boolean                 doProxy                 = FALSE;
 420         Boolean                 doReach                 = FALSE;
 421         Boolean                 doSnap                  = FALSE;
 422         char                    *error                  = NULL;
 423         char                    *get                    = NULL;
 424         char                    *log                    = NULL;
 425         extern int              optind;
 426         int                     opt;
 427         int                     opti;
 428         const char              *prog                   = argv[0];
 429         char                    *renew                  = NULL;
 430         char                    *set                    = NULL;
 431         char                    *nc_cmd                 = NULL;
 432         InputRef                src;
 433         int                     timeout                 = 15;   /* default timeout (in seconds) */
 434         char                    *wait                   = NULL;
 435         Boolean                 watch                   = FALSE;
 436         int                     xStore                  = 0;    /* non dynamic store command line options */
 437
 438         /* process any arguments */
 439
 440         while ((opt = getopt_long(argc, argv, "dDvprt:w:W", longopts, &opti)) != -1) {
 441                 switch(opt) {
 442                 case 'd':
 443                         _sc_debug = TRUE;
 444                         _sc_log   = FALSE;      /* enable framework logging */
 445                         break;
 446                 case 'D':
 447                         doDispatch = TRUE;
 448                         break;
 449                 case 'v':
 450                         _sc_verbose = TRUE;
 451                         _sc_log     = FALSE;    /* enable framework logging */
 452                         break;
 453                 case 'p':
 454                         enablePrivateAPI = TRUE;
 455                         break;
 456                 case 'r':
 457                         doReach = TRUE;
 458                         xStore++;
 459                         break;
 460                 case 't':
 461                         timeout = atoi(optarg);
 462                         break;
 463                 case 'w':
 464                         wait = optarg;
 465                         xStore++;
 466                         break;
 467                 case 'W':
 468                         watch = TRUE;
 469                         break;
 470                 case 0:
 471                         if        (strcmp(longopts[opti].name, "dns") == 0) {
 472                                 doDNS = TRUE;
 473                                 xStore++;
 474                         } else if (strcmp(longopts[opti].name, "error") == 0) {
 475                                 error = optarg;
 476                                 xStore++;
 477                         } else if (strcmp(longopts[opti].name, "get") == 0) {
 478                                 get = optarg;
 479                                 xStore++;
 480                         } else if (strcmp(longopts[opti].name, "nc") == 0) {
 481                                 nc_cmd = optarg;
 482                                 xStore++;
 483                         } else if (strcmp(longopts[opti].name, "net") == 0) {
 484                                 doNet = TRUE;
 485                                 xStore++;
 486                         } else if (strcmp(longopts[opti].name, "nwi") == 0) {
 487                                 doNWI = TRUE;
 488                                 xStore++;
 489                         } else if (strcmp(longopts[opti].name, "prefs") == 0) {
 490                                 doPrefs = TRUE;
 491                                 xStore++;
 492                         } else if (strcmp(longopts[opti].name, "proxy") == 0) {
 493                                 doProxy = TRUE;
 494                                 xStore++;
 495                         } else if (strcmp(longopts[opti].name, "renew") == 0) {
 496                                 renew = optarg;
 497                                 xStore++;
 498                         } else if (strcmp(longopts[opti].name, "set") == 0) {
 499                                 set = optarg;
 500                                 xStore++;
 501                         } else if (strcmp(longopts[opti].name, "snapshot") == 0) {
 502                                 doSnap = TRUE;
 503                                 xStore++;
 504                         } else if (strcmp(longopts[opti].name, "log") == 0) {
 505                                 log = optarg;
 506                                 xStore++;
 507 #if     !TARGET_OS_IPHONE
 508                         } else if (strcmp(longopts[opti].name, "allow-new-interfaces") == 0) {
 509                                 allowNewInterfaces = TRUE;
 510                                 xStore++;
 511 #endif  // !TARGET_OS_IPHONE
 512                         } else if (strcmp(longopts[opti].name, "disable-until-needed") == 0) {
 513                                 disableUntilNeeded = TRUE;
 514                                 xStore++;
 515                         } else if (strcmp(longopts[opti].name, "user") == 0) {
 516                                 username = CFStringCreateWithCString(NULL, optarg, kCFStringEncodingUTF8);
 517                         } else if (strcmp(longopts[opti].name, "password") == 0) {
 518                                 password = CFStringCreateWithCString(NULL, optarg, kCFStringEncodingUTF8);
 519                         } else if (strcmp(longopts[opti].name, "secret") == 0) {
 520                                 sharedsecret = CFStringCreateWithCString(NULL, optarg, kCFStringEncodingUTF8);
 521                         } else if (strcmp(longopts[opti].name, "advisory") == 0) {
 522                                 doAdvisory = TRUE;
 523                                 advisoryInterface = optarg;
 524                                 xStore++;
 525                         }
 526                         break;
 527                 case '?':
 528                 default :
 529                         usage(prog);
 530                 }
 531         }
 532
 533         argc -= optind;
 534         argv += optind;
 535
 536         if (xStore > 1) {
 537                 // if we are attempting to process more than one type of request
 538                 usage(prog);
 539         }
 540
 541         /* are we checking (or watching) the reachability of a host/address */
 542         if (doReach) {
 543                 if (argc < 1) {
 544                         usage(prog);
 545                 }
 546                 if (watch) {
 547                         do_watchReachability(argc, (char **)argv);
 548                 } else {
 549                         do_checkReachability(argc, (char **)argv);
 550                 }
 551                 /* NOT REACHED */
 552         }
 553
 554         /* are we waiting on the presense of a dynamic store key */
 555         if (wait) {
 556                 do_wait(wait, timeout);
 557                 /* NOT REACHED */
 558         }
 559
 560         /* are we looking up the DNS configuration */
 561         if (doDNS) {
 562                 if (watch) {
 563                         do_watchDNSConfiguration(argc, (char **)argv);
 564                 } else {
 565                         do_showDNSConfiguration(argc, (char **)argv);
 566                 }
 567                 /* NOT REACHED */
 568         }
 569
 570         if (doNWI) {
 571                 if (watch) {
 572                         do_watchNWI(argc, (char**)argv);
 573                 } else {
 574                         do_showNWI(argc, (char**)argv);
 575                 }
 576                 /* NOT REACHED */
 577         }
 578
 579         if (doSnap) {
 580                 if (!enablePrivateAPI) {
 581                         usage(prog);
 582                 }
 583
 584                 do_open(0, NULL);       /* open the dynamic store */
 585                 do_snapshot(argc, (char**)argv);
 586                 exit(0);
 587         }
 588
 589         if (doAdvisory) {
 590                 do_advisory(advisoryInterface, watch, argc, (char**)argv);
 591                 /* NOT REACHED */
 592         }
 593
 594         /* are we translating error #'s to descriptive text */
 595         if (error != NULL) {
 596                 int     sc_status       = atoi(error);
 597
 598                 SCPrint(TRUE, stdout, CFSTR("Error: 0x%08x %d %s\n"),
 599                         sc_status,
 600                         sc_status,
 601                         SCErrorString(sc_status));
 602                 exit(0);
 603         }
 604
 605         /* are we looking up a preference value */
 606         if (get) {
 607                 if (argc == 0) {
 608                         if (findPref(get) < 0) {
 609                                 usage(prog);
 610                         }
 611                 } else if (argc == 2) {
 612                         /*
 613                          * extended --get
 614                          *   i.e. scutil --get <filename> <prefs path> <key>
 615                          *
 616                          * need to go back one argument to re-use the 1st "--get"
 617                          * argument as the prefs path name
 618                          */
 619                         argc++;
 620                         argv--;
 621                 } else {
 622                         usage(prog);
 623                 }
 624
 625                 do_getPref(get, argc, (char **)argv);
 626                 /* NOT REACHED */
 627         }
 628
 629         /* are we looking up the proxy configuration */
 630         if (doProxy) {
 631                 do_showProxyConfiguration(argc, (char **)argv);
 632                 /* NOT REACHED */
 633         }
 634
 635         /* are we changing a preference value */
 636         if (set) {
 637                 if (findPref(set) < 0) {
 638                         usage(prog);
 639                 }
 640                 do_setPref(set, argc, (char **)argv);
 641                 /* NOT REACHED */
 642         }
 643
 644         /* verbose log */
 645         if (log != NULL) {
 646                 if (strcasecmp(log, "IPMonitor")) {
 647                         usage(prog);
 648                 }
 649                 do_log(log, argc, (char * *)argv);
 650                 /* NOT REACHED */
 651         }
 652
 653 #if     !TARGET_OS_IPHONE
 654         /* allowNewInterfaces */
 655         if (allowNewInterfaces) {
 656                 do_ifnamer("allow-new-interfaces", argc, (char * *)argv);
 657                 /* NOT REACHED */
 658         }
 659 #endif  // !TARGET_OS_IPHONE
 660
 661         /* disableUntilNeeded */
 662         if (disableUntilNeeded) {
 663                 do_disable_until_needed(argc, (char * *)argv);
 664                 /* NOT REACHED */
 665         }
 666
 667         /* network connection commands */
 668         if (nc_cmd) {
 669                 if (find_nc_cmd(nc_cmd) < 0) {
 670                         usage(prog);
 671                 }
 672                 do_nc_cmd(nc_cmd, argc, (char **)argv, watch);
 673                 /* NOT REACHED */
 674         }
 675
 676         if (doNet) {
 677                 /* if we are going to be managing the network configuration */
 678                 commands  = (cmdInfo *)commands_net;
 679                 nCommands = nCommands_net;
 680
 681                 if (!getenv("ENABLE_EXPERIMENTAL_SCUTIL_COMMANDS")) {
 682                         usage(prog);
 683                 }
 684
 685                 do_net_init();                          /* initialization */
 686                 do_net_open(argc, (char **)argv);       /* open prefs */
 687         } else if (doPrefs) {
 688                 /* if we are going to be managing the network configuration */
 689                 commands  = (cmdInfo *)commands_prefs;
 690                 nCommands = nCommands_prefs;
 691
 692                 do_dictInit(0, NULL);                   /* start with an empty dictionary */
 693                 do_prefs_init();                        /* initialization */
 694                 do_prefs_open(argc, (char **)argv);     /* open prefs */
 695         } else {
 696                 /* if we are going to be managing the dynamic store */
 697                 commands  = (cmdInfo *)commands_store;
 698                 nCommands = nCommands_store;
 699
 700                 do_dictInit(0, NULL);   /* start with an empty dictionary */
 701                 do_open(0, NULL);       /* open the dynamic store */
 702         }
 703
 704         /* are we trying to renew a DHCP lease */
 705         if (renew != NULL) {
 706                 do_renew(renew);
 707                 /* NOT REACHED */
 708         }
 709
 710         /* allocate command input stream */
 711         src = (InputRef)CFAllocatorAllocate(NULL, sizeof(Input), 0);
 712         src->fp = stdin;
 713         src->el = NULL;
 714         src->h  = NULL;
 715
 716         if (isatty(fileno(src->fp))) {
 717                 int             editmode        = 1;
 718                 HistEvent       ev;
 719                 struct termios  t;
 720
 721                 if (tcgetattr(fileno(src->fp), &t) != -1) {
 722                         if ((t.c_lflag & ECHO) == 0) {
 723                                 editmode = 0;
 724                         }
 725                 }
 726                 src->el = el_init(prog, src->fp, stdout, stderr);
 727                 src->h  = history_init();
 728
 729                 (void)history(src->h, &ev, H_SETSIZE, INT_MAX);
 730                 el_set(src->el, EL_HIST, history, src->h);
 731
 732                 if (!editmode) {
 733                         el_set(src->el, EL_EDITMODE, 0);
 734                 }
 735
 736                 el_set(src->el, EL_EDITOR, "emacs");
 737                 el_set(src->el, EL_PROMPT, prompt);
 738
 739                 el_source(src->el, NULL);
 740
 741                 if ((el_get(src->el, EL_EDITMODE, &editmode) != -1) && editmode != 0) {
 742                         el_set(src->el, EL_SIGNAL, 1);
 743                 } else {
 744                         history_end(src->h);
 745                         src->h = NULL;
 746                         el_end(src->el);
 747                         src->el = NULL;
 748                 }
 749         }
 750
 751         while (TRUE) {
 752                 Boolean ok;
 753
 754                 ok = process_line(src);
 755                 if (!ok) {
 756                         break;
 757                 }
 758         }
 759
 760         /* close the socket, free resources */
 761         if (src->h)     history_end(src->h);
 762         if (src->el)    el_end(src->el);
 763         (void)fclose(src->fp);
 764         CFAllocatorDeallocate(NULL, src);
 765
 766         exit (EX_OK);   // insure the process exit status is 0
 767         return 0;       // ...and make main fit the ANSI spec.
 768 }