scutil.tproj/scutil.c

   1 /*
   2  * Copyright (c) 2000-2017 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 /*
  25  * Modification History
  26  *
  27  * June 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__ CFRunLoopRef         notifyRl        = NULL;
  79 __private_extern__ CFRunLoopSourceRef   notifyRls       = NULL;
  80 __private_extern__ SCPreferencesRef     prefs           = NULL;
  81 __private_extern__ SCDynamicStoreRef    store           = NULL;
  82 __private_extern__ CFPropertyListRef    value           = NULL;
  83 __private_extern__ CFMutableArrayRef    watchedKeys     = NULL;
  84 __private_extern__ CFMutableArrayRef    watchedPatterns = NULL;
  85
  86 static const struct option longopts[] = {
  87 //      { "debug",              no_argument,            NULL,   'd'     },
  88 //      { "dispatch",           no_argument,            NULL,   'D'     },
  89 //      { "verbose",            no_argument,            NULL,   'v'     },
  90 //      { "SPI",                no_argument,            NULL,   'p'     },
  91 //      { "check-reachability", required_argument,      NULL,   'r'     },
  92 //      { "timeout",            required_argument,      NULL,   't'     },
  93 //      { "wait-key",           required_argument,      NULL,   'w'     },
  94 //      { "watch-reachability", no_argument,            NULL,   'W'     },
  95         { "dns",                no_argument,            NULL,   0       },
  96         { "get",                required_argument,      NULL,   0       },
  97         { "error",              required_argument,      NULL,   0       },
  98         { "help",               no_argument,            NULL,   '?'     },
  99         { "nc",                 required_argument,      NULL,   0       },
 100         { "net",                no_argument,            NULL,   0       },
 101         { "nwi",                no_argument,            NULL,   0       },
 102         { "prefs",              no_argument,            NULL,   0       },
 103         { "proxy",              no_argument,            NULL,   0       },
 104         { "renew",              required_argument,      NULL,   0       },
 105         { "set",                required_argument,      NULL,   0       },
 106         { "snapshot",           no_argument,            NULL,   0       },
 107         { "user",               required_argument,      NULL,   0       },
 108         { "password",           required_argument,      NULL,   0       },
 109         { "secret",             required_argument,      NULL,   0       },
 110         { "log",                required_argument,      NULL,   0       },
 111 #if     !TARGET_OS_IPHONE
 112         { "allow-new-interfaces", no_argument,          NULL,   0       },
 113 #endif  // !TARGET_OS_IPHONE
 114         { "disable-until-needed", no_argument,          NULL,   0       },
 115         { NULL,                 0,                      NULL,   0       }
 116 };
 117
 118
 119 __private_extern__
 120 CFStringRef
 121 _copyStringFromSTDIN(CFStringRef prompt, CFStringRef defaultValue)
 122 {
 123         char            buf[1024];
 124         int             i;
 125         Boolean         is_user_prompt = (prompt != NULL && isatty(STDIN_FILENO) && isatty(STDOUT_FILENO));
 126         int             len;
 127         char            *modbuf;
 128         int             modlen;
 129         CFStringRef     utf8;
 130
 131         /* Print out a prompt to user that entry is desired */
 132         if (is_user_prompt) {
 133                 if (defaultValue != NULL) {
 134                         SCPrint(TRUE, stdout, CFSTR("%@ [%@]: "), prompt, defaultValue);
 135                 } else {
 136                         SCPrint(TRUE, stdout, CFSTR("%@: "), prompt);
 137                 }
 138         }
 139
 140         /* Get user input */
 141         if (fgets(buf, sizeof(buf), stdin) == NULL) {
 142                 return NULL;
 143         }
 144
 145         /* Prepare for trim */
 146         len = (int)strlen(buf);
 147         modbuf = buf;
 148         modlen = len;
 149
 150         /* Trim new-line */
 151         if ((modlen > 0) && (modbuf[modlen - 1] == '\n')) {
 152                 modbuf[modlen - 1] = '\0';
 153                 modlen--;
 154         }
 155
 156         /* If nothing was entered at the user prompt, set default */
 157         if (is_user_prompt && defaultValue != NULL && modlen == 0) {
 158                 CFRetain(defaultValue);
 159                 return defaultValue;
 160         }
 161
 162         /* Trim spaces from front */
 163         while (modlen > 0 && isspace(modbuf[0])) {
 164                 modbuf = &modbuf[1];
 165                 modlen--;
 166         }
 167
 168         /* Trim spaces from back */
 169         for (i = modlen - 1; i >= 0; i--) {
 170                 if (isspace(buf[i])) {
 171                         buf[i] = '\0';
 172                         modlen--;
 173                 } else {
 174                         break;
 175                 }
 176         }
 177
 178         utf8 = CFStringCreateWithBytes(NULL, (UInt8 *)modbuf, modlen, kCFStringEncodingUTF8, TRUE);
 179         return utf8;
 180 }
 181
 182 static char *
 183 getLine(char *buf, int len, InputRef src)
 184 {
 185         int     n;
 186
 187         if (src->el) {
 188                 int             count;
 189                 const char      *line;
 190
 191                 line = el_gets(src->el, &count);
 192                 if (line == NULL)
 193                         return NULL;
 194
 195                 strlcpy(buf, line, len);
 196         } else {
 197                 if (fgets(buf, len, src->fp) == NULL)
 198                         return NULL;
 199         }
 200
 201         n = (int)strlen(buf);
 202         if (buf[n-1] == '\n') {
 203                 /* the entire line fit in the buffer, remove the newline */
 204                 buf[n-1] = '\0';
 205         } else if (!src->el) {
 206                 /* eat the remainder of the line */
 207                 do {
 208                         n = fgetc(src->fp);
 209                 } while ((n != '\n') && (n != EOF));
 210         }
 211
 212         if (src->h && (buf[0] != '\0')) {
 213                 HistEvent       ev;
 214
 215                 history(src->h, &ev, H_ENTER, buf);
 216         }
 217
 218         return buf;
 219 }
 220
 221
 222 static char *
 223 getString(char **line)
 224 {
 225         char *s, *e, c, *string;
 226         int i, isQuoted = 0, escaped = 0;
 227
 228         if (*line == NULL) return NULL;
 229         if (**line == '\0') return NULL;
 230
 231         /* Skip leading white space */
 232         while (isspace(**line)) *line += 1;
 233
 234         /* Grab the next string */
 235         s = *line;
 236         if (*s == '\0') {
 237                 return NULL;                            /* no string available */
 238         } else if (*s == '"') {
 239                 isQuoted = 1;                           /* it's a quoted string */
 240                 s++;
 241         }
 242
 243         for (e = s; (c = *e) != '\0'; e++) {
 244                 if (isQuoted && (c == '"'))
 245                         break;                          /* end of quoted string */
 246                 if (c == '\\') {
 247                         e++;
 248                         if (*e == '\0')
 249                                 break;                  /* if premature end-of-string */
 250                         if ((*e == '"') || isspace(*e))
 251                                 escaped++;              /* if escaped quote or white space */
 252                 }
 253                 if (!isQuoted && isspace(c))
 254                         break;                          /* end of non-quoted string */
 255         }
 256
 257         string = malloc(e - s - escaped + 1);
 258
 259         for (i = 0; s < e; s++) {
 260                 string[i] = *s;
 261                 if (!((s[0] == '\\') && ((s[1] == '"') || isspace(s[1])))) i++;
 262         }
 263         string[i] = '\0';
 264
 265         if (isQuoted)
 266                 e++;                                    /* move past end of quoted string */
 267
 268         *line = e;
 269         return string;
 270 }
 271
 272
 273 __private_extern__
 274 Boolean
 275 process_line(InputRef src)
 276 {
 277         char    *arg;
 278         int     argc                    = 0;
 279         char    **argv                  = NULL;
 280         int     i;
 281         char    line[LINE_LENGTH];
 282         char    *s                      = line;
 283
 284         // if end-of-file, exit
 285         if (getLine(line, sizeof(line), src) == NULL)
 286                 return FALSE;
 287
 288         if (nesting > 0) {
 289                 SCPrint(TRUE, stdout, CFSTR("%d> %s\n"), nesting, line);
 290         }
 291
 292         // break up the input line
 293         while ((arg = getString(&s)) != NULL) {
 294                 if (argc == 0)
 295                         argv = (char **)malloc(2 * sizeof(char *));
 296                 else
 297                         argv = (char **)reallocf(argv, ((argc + 2) * sizeof(char *)));
 298                 argv[argc++] = arg;
 299         }
 300
 301         if (argc == 0) {
 302                 return TRUE;            // if no arguments
 303         }
 304
 305         /* process the command */
 306         if (*argv[0] != '#') {
 307                 argv[argc] = NULL;      // just in case...
 308                 currentInput = src;
 309                 do_command(argc, argv);
 310         }
 311
 312         /* free the arguments */
 313         for (i = 0; i < argc; i++) {
 314                 free(argv[i]);
 315         }
 316         free(argv);
 317
 318         return !termRequested;
 319 }
 320
 321
 322 static void
 323 usage(const char *command)
 324 {
 325         SCPrint(TRUE, stderr, CFSTR("usage: %s\n"), command);
 326         SCPrint(TRUE, stderr, CFSTR("\tinteractive access to the dynamic store.\n"));
 327         SCPrint(TRUE, stderr, CFSTR("\n"));
 328         SCPrint(TRUE, stderr, CFSTR("   or: %s --prefs [preference-file]\n"), command);
 329         SCPrint(TRUE, stderr, CFSTR("\tinteractive access to the [raw] stored preferences.\n"));
 330         SCPrint(TRUE, stderr, CFSTR("\n"));
 331         SCPrint(TRUE, stderr, CFSTR("   or: %s [-W] -r nodename\n"), command);
 332         SCPrint(TRUE, stderr, CFSTR("   or: %s [-W] -r address\n"), command);
 333         SCPrint(TRUE, stderr, CFSTR("   or: %s [-W] -r local-address remote-address\n"), command);
 334         SCPrint(TRUE, stderr, CFSTR("\tcheck reachability of node, address, or address pair (-W to \"watch\").\n"));
 335         SCPrint(TRUE, stderr, CFSTR("\n"));
 336         SCPrint(TRUE, stderr, CFSTR("   or: %s -w dynamic-store-key [ -t timeout ]\n"), command);
 337         SCPrint(TRUE, stderr, CFSTR("\t-w\twait for presense of dynamic store key\n"));
 338         SCPrint(TRUE, stderr, CFSTR("\t-t\ttime to wait for key\n"));
 339         SCPrint(TRUE, stderr, CFSTR("\n"));
 340         SCPrint(TRUE, stderr, CFSTR("   or: %s --get pref\n"), command);
 341         SCPrint(TRUE, stderr, CFSTR("   or: %s --set pref [newval]\n"), command);
 342         SCPrint(TRUE, stderr, CFSTR("   or: %s --get filename path key  \n"), command);
 343         SCPrint(TRUE, stderr, CFSTR("\tpref\tdisplay (or set) the specified preference.  Valid preferences\n"));
 344         SCPrint(TRUE, stderr, CFSTR("\t\tinclude:\n"));
 345         SCPrint(TRUE, stderr, CFSTR("\t\t\tComputerName, LocalHostName, HostName\n"));
 346         SCPrint(TRUE, stderr, CFSTR("\tnewval\tNew preference value to be set.  If not specified,\n"));
 347         SCPrint(TRUE, stderr, CFSTR("\t\tthe new value will be read from standard input.\n"));
 348         SCPrint(TRUE, stderr, CFSTR("\n"));
 349         SCPrint(TRUE, stderr, CFSTR("   or: %s --dns\n"), command);
 350         SCPrint(TRUE, stderr, CFSTR("\tshow DNS configuration.\n"));
 351         SCPrint(TRUE, stderr, CFSTR("\n"));
 352         SCPrint(TRUE, stderr, CFSTR("   or: %s --proxy\n"), command);
 353         SCPrint(TRUE, stderr, CFSTR("\tshow \"proxy\" configuration.\n"));
 354         SCPrint(TRUE, stderr, CFSTR("\n"));
 355         SCPrint(TRUE, stderr, CFSTR("   or: %s --nwi\n"), command);
 356         SCPrint(TRUE, stderr, CFSTR("\tshow network information\n"));
 357         SCPrint(TRUE, stderr, CFSTR("\n"));
 358         SCPrint(TRUE, stderr, CFSTR("   or: %s --nc\n"), command);
 359         SCPrint(TRUE, stderr, CFSTR("\tshow VPN network configuration information. Use --nc help for full command list\n"));
 360
 361         if (_sc_debug) {
 362                 SCPrint(TRUE, stderr, CFSTR("\n"));
 363                 SCPrint(TRUE, stderr, CFSTR("   or: %s --log IPMonitor [off|on]\n"), command);
 364                 SCPrint(TRUE, stderr, CFSTR("\tmanage logging.\n"));
 365
 366                 SCPrint(TRUE, stderr, CFSTR("\n"));
 367                 SCPrint(TRUE, stderr, CFSTR("   or: %s --disable-until-needed <interfaceName> [on|off ]\n"), command);
 368                 SCPrint(TRUE, stderr, CFSTR("\tmanage secondary interface demand.\n"));
 369         }
 370
 371 #if     !TARGET_OS_IPHONE
 372         SCPrint(TRUE, stderr, CFSTR("\n"));
 373         SCPrint(TRUE, stderr, CFSTR("   or: %s --allow-new-interfaces [off|on]\n"), command);
 374         SCPrint(TRUE, stderr, CFSTR("\tmanage new interface creation with screen locked.\n"));
 375 #endif  // !TARGET_OS_IPHONE
 376
 377         if (getenv("ENABLE_EXPERIMENTAL_SCUTIL_COMMANDS")) {
 378                 SCPrint(TRUE, stderr, CFSTR("\n"));
 379                 SCPrint(TRUE, stderr, CFSTR("   or: %s --net\n"), command);
 380                 SCPrint(TRUE, stderr, CFSTR("\tmanage network configuration.\n"));
 381         }
 382
 383         SCPrint(TRUE, stderr, CFSTR("\n"));
 384         SCPrint(TRUE, stderr, CFSTR("   or: %s --error err#\n"), command);
 385         SCPrint(TRUE, stderr, CFSTR("\tdisplay a descriptive message for the given error code\n"));
 386
 387         exit (EX_USAGE);
 388 }
 389
 390
 391 static char *
 392 prompt(EditLine *el)
 393 {
 394 #if     !TARGET_OS_SIMULATOR
 395         return "> ";
 396 #else   // !TARGET_OS_SIMULATOR
 397         return "sim> ";
 398 #endif  // !TARGET_OS_SIMULATOR
 399 }
 400
 401
 402 int
 403 main(int argc, char * const argv[])
 404 {
 405 #if     !TARGET_OS_IPHONE
 406         Boolean                 allowNewInterfaces      = FALSE;
 407 #endif  // !TARGET_OS_IPHONE
 408         Boolean                 disableUntilNeeded      = FALSE;
 409         Boolean                 doDNS                   = FALSE;
 410         Boolean                 doNet                   = FALSE;
 411         Boolean                 doNWI                   = FALSE;
 412         Boolean                 doPrefs                 = FALSE;
 413         Boolean                 doProxy                 = FALSE;
 414         Boolean                 doReach                 = FALSE;
 415         Boolean                 doSnap                  = FALSE;
 416         char                    *error                  = NULL;
 417         char                    *get                    = NULL;
 418         char                    *log                    = NULL;
 419         extern int              optind;
 420         int                     opt;
 421         int                     opti;
 422         const char              *prog                   = argv[0];
 423         char                    *renew                  = NULL;
 424         char                    *set                    = NULL;
 425         char                    *nc_cmd                 = NULL;
 426         InputRef                src;
 427         int                     timeout                 = 15;   /* default timeout (in seconds) */
 428         char                    *wait                   = NULL;
 429         Boolean                 watch                   = FALSE;
 430         int                     xStore                  = 0;    /* non dynamic store command line options */
 431
 432         /* process any arguments */
 433
 434         while ((opt = getopt_long(argc, argv, "dDvprt:w:W", longopts, &opti)) != -1)
 435                 switch(opt) {
 436                 case 'd':
 437                         _sc_debug = TRUE;
 438                         _sc_log   = FALSE;      /* enable framework logging */
 439                         break;
 440                 case 'D':
 441                         doDispatch = TRUE;
 442                         break;
 443                 case 'v':
 444                         _sc_verbose = TRUE;
 445                         _sc_log     = FALSE;    /* enable framework logging */
 446                         break;
 447                 case 'p':
 448                         enablePrivateAPI = TRUE;
 449                         break;
 450                 case 'r':
 451                         doReach = TRUE;
 452                         xStore++;
 453                         break;
 454                 case 't':
 455                         timeout = atoi(optarg);
 456                         break;
 457                 case 'w':
 458                         wait = optarg;
 459                         xStore++;
 460                         break;
 461                 case 'W':
 462                         watch = TRUE;
 463                         break;
 464                 case 0:
 465                         if        (strcmp(longopts[opti].name, "dns") == 0) {
 466                                 doDNS = TRUE;
 467                                 xStore++;
 468                         } else if (strcmp(longopts[opti].name, "error") == 0) {
 469                                 error = optarg;
 470                                 xStore++;
 471                         } else if (strcmp(longopts[opti].name, "get") == 0) {
 472                                 get = optarg;
 473                                 xStore++;
 474                         } else if (strcmp(longopts[opti].name, "nc") == 0) {
 475                                 nc_cmd = optarg;
 476                                 xStore++;
 477                         } else if (strcmp(longopts[opti].name, "net") == 0) {
 478                                 doNet = TRUE;
 479                                 xStore++;
 480                         } else if (strcmp(longopts[opti].name, "nwi") == 0) {
 481                                 doNWI = TRUE;
 482                                 xStore++;
 483                         } else if (strcmp(longopts[opti].name, "prefs") == 0) {
 484                                 doPrefs = TRUE;
 485                                 xStore++;
 486                         } else if (strcmp(longopts[opti].name, "proxy") == 0) {
 487                                 doProxy = TRUE;
 488                                 xStore++;
 489                         } else if (strcmp(longopts[opti].name, "renew") == 0) {
 490                                 renew = optarg;
 491                                 xStore++;
 492                         } else if (strcmp(longopts[opti].name, "set") == 0) {
 493                                 set = optarg;
 494                                 xStore++;
 495                         } else if (strcmp(longopts[opti].name, "snapshot") == 0) {
 496                                 doSnap = TRUE;
 497                                 xStore++;
 498                         } else if (strcmp(longopts[opti].name, "log") == 0) {
 499                                 log = optarg;
 500                                 xStore++;
 501 #if     !TARGET_OS_IPHONE
 502                         } else if (strcmp(longopts[opti].name, "allow-new-interfaces") == 0) {
 503                                 allowNewInterfaces = TRUE;
 504                                 xStore++;
 505 #endif  // !TARGET_OS_IPHONE
 506                         } else if (strcmp(longopts[opti].name, "disable-until-needed") == 0) {
 507                                 disableUntilNeeded = TRUE;
 508                                 xStore++;
 509                         } else if (strcmp(longopts[opti].name, "user") == 0) {
 510                                 username = CFStringCreateWithCString(NULL, optarg, kCFStringEncodingUTF8);
 511                         } else if (strcmp(longopts[opti].name, "password") == 0) {
 512                                 password = CFStringCreateWithCString(NULL, optarg, kCFStringEncodingUTF8);
 513                         } else if (strcmp(longopts[opti].name, "secret") == 0) {
 514                                 sharedsecret = CFStringCreateWithCString(NULL, optarg, kCFStringEncodingUTF8);
 515                         }
 516                         break;
 517                 case '?':
 518                 default :
 519                         usage(prog);
 520                 }
 521         argc -= optind;
 522         argv += optind;
 523
 524         if (xStore > 1) {
 525                 // if we are attempting to process more than one type of request
 526                 usage(prog);
 527         }
 528
 529         /* are we checking (or watching) the reachability of a host/address */
 530         if (doReach) {
 531                 if (argc < 1) {
 532                         usage(prog);
 533                 }
 534                 if (watch) {
 535                         do_watchReachability(argc, (char **)argv);
 536                 } else {
 537                         do_checkReachability(argc, (char **)argv);
 538                 }
 539                 /* NOT REACHED */
 540         }
 541
 542         /* are we waiting on the presense of a dynamic store key */
 543         if (wait) {
 544                 do_wait(wait, timeout);
 545                 /* NOT REACHED */
 546         }
 547
 548         /* are we looking up the DNS configuration */
 549         if (doDNS) {
 550                 if (watch) {
 551                         do_watchDNSConfiguration(argc, (char **)argv);
 552                 } else {
 553                         do_showDNSConfiguration(argc, (char **)argv);
 554                 }
 555                 /* NOT REACHED */
 556         }
 557
 558         if (doNWI) {
 559                 if (watch) {
 560                         do_watchNWI(argc, (char**)argv);
 561                 } else {
 562                         do_showNWI(argc, (char**)argv);
 563                 }
 564                 /* NOT REACHED */
 565         }
 566
 567         if (doSnap) {
 568                 if (!enablePrivateAPI
 569 #if     !TARGET_OS_SIMULATOR
 570                     || (geteuid() != 0)
 571 #endif  // !TARGET_OS_SIMULATOR
 572                    ) {
 573                         usage(prog);
 574                 }
 575
 576                 do_open(0, NULL);       /* open the dynamic store */
 577                 do_snapshot(argc, (char**)argv);
 578                 exit(0);
 579         }
 580
 581         /* are we translating error #'s to descriptive text */
 582         if (error != NULL) {
 583                 int     sc_status       = atoi(error);
 584
 585                 SCPrint(TRUE, stdout, CFSTR("Error: 0x%08x %d %s\n"),
 586                         sc_status,
 587                         sc_status,
 588                         SCErrorString(sc_status));
 589                 exit(0);
 590         }
 591
 592         /* are we looking up a preference value */
 593         if (get) {
 594                 if (argc == 0) {
 595                         if (findPref(get) < 0) {
 596                                 usage(prog);
 597                         }
 598                 } else if (argc == 2) {
 599                         /*
 600                          * extended --get
 601                          *   i.e. scutil --get <filename> <prefs path> <key>
 602                          *
 603                          * need to go back one argument to re-use the 1st "--get"
 604                          * argument as the prefs path name
 605                          */
 606                         argc++;
 607                         argv--;
 608                 } else {
 609                         usage(prog);
 610                 }
 611
 612                 do_getPref(get, argc, (char **)argv);
 613                 /* NOT REACHED */
 614         }
 615
 616         /* are we looking up the proxy configuration */
 617         if (doProxy) {
 618                 do_showProxyConfiguration(argc, (char **)argv);
 619                 /* NOT REACHED */
 620         }
 621
 622         /* are we changing a preference value */
 623         if (set) {
 624                 if (findPref(set) < 0) {
 625                         usage(prog);
 626                 }
 627                 do_setPref(set, argc, (char **)argv);
 628                 /* NOT REACHED */
 629         }
 630
 631         /* verbose log */
 632         if (log != NULL) {
 633                 if (strcasecmp(log, "IPMonitor")) {
 634                         usage(prog);
 635                 }
 636                 do_log(log, argc, (char * *)argv);
 637                 /* NOT REACHED */
 638         }
 639
 640 #if     !TARGET_OS_IPHONE
 641         /* allowNewInterfaces */
 642         if (allowNewInterfaces) {
 643                 do_ifnamer("allow-new-interfaces", argc, (char * *)argv);
 644                 /* NOT REACHED */
 645         }
 646 #endif  // !TARGET_OS_IPHONE
 647
 648         /* disableUntilNeeded */
 649         if (disableUntilNeeded) {
 650                 do_disable_until_needed(argc, (char * *)argv);
 651                 /* NOT REACHED */
 652         }
 653
 654         /* network connection commands */
 655         if (nc_cmd) {
 656                 if (find_nc_cmd(nc_cmd) < 0) {
 657                         usage(prog);
 658                 }
 659                 do_nc_cmd(nc_cmd, argc, (char **)argv, watch);
 660                 /* NOT REACHED */
 661         }
 662
 663         if (doNet) {
 664                 /* if we are going to be managing the network configuration */
 665                 commands  = (cmdInfo *)commands_net;
 666                 nCommands = nCommands_net;
 667
 668                 if (!getenv("ENABLE_EXPERIMENTAL_SCUTIL_COMMANDS")) {
 669                         usage(prog);
 670                 }
 671
 672                 do_net_init();                          /* initialization */
 673                 do_net_open(argc, (char **)argv);       /* open prefs */
 674         } else if (doPrefs) {
 675                 /* if we are going to be managing the network configuration */
 676                 commands  = (cmdInfo *)commands_prefs;
 677                 nCommands = nCommands_prefs;
 678
 679                 do_dictInit(0, NULL);                   /* start with an empty dictionary */
 680                 do_prefs_init();                        /* initialization */
 681                 do_prefs_open(argc, (char **)argv);     /* open prefs */
 682         } else {
 683                 /* if we are going to be managing the dynamic store */
 684                 commands  = (cmdInfo *)commands_store;
 685                 nCommands = nCommands_store;
 686
 687                 do_dictInit(0, NULL);   /* start with an empty dictionary */
 688                 do_open(0, NULL);       /* open the dynamic store */
 689         }
 690
 691         /* are we trying to renew a DHCP lease */
 692         if (renew != NULL) {
 693                 do_renew(renew);
 694                 /* NOT REACHED */
 695         }
 696
 697         /* allocate command input stream */
 698         src = (InputRef)CFAllocatorAllocate(NULL, sizeof(Input), 0);
 699         src->fp = stdin;
 700         src->el = NULL;
 701         src->h  = NULL;
 702
 703         if (isatty(fileno(src->fp))) {
 704                 int             editmode        = 1;
 705                 HistEvent       ev;
 706                 struct termios  t;
 707
 708                 if (tcgetattr(fileno(src->fp), &t) != -1) {
 709                         if ((t.c_lflag & ECHO) == 0) {
 710                                 editmode = 0;
 711                         }
 712                 }
 713                 src->el = el_init(prog, src->fp, stdout, stderr);
 714                 src->h  = history_init();
 715
 716                 (void)history(src->h, &ev, H_SETSIZE, INT_MAX);
 717                 el_set(src->el, EL_HIST, history, src->h);
 718
 719                 if (!editmode) {
 720                         el_set(src->el, EL_EDITMODE, 0);
 721                 }
 722
 723                 el_set(src->el, EL_EDITOR, "emacs");
 724                 el_set(src->el, EL_PROMPT, prompt);
 725
 726                 el_source(src->el, NULL);
 727
 728                 if ((el_get(src->el, EL_EDITMODE, &editmode) != -1) && editmode != 0) {
 729                         el_set(src->el, EL_SIGNAL, 1);
 730                 } else {
 731                         history_end(src->h);
 732                         src->h = NULL;
 733                         el_end(src->el);
 734                         src->el = NULL;
 735                 }
 736         }
 737
 738         while (TRUE) {
 739                 Boolean ok;
 740
 741                 ok = process_line(src);
 742                 if (!ok) {
 743                         break;
 744                 }
 745         }
 746
 747         /* close the socket, free resources */
 748         if (src->h)     history_end(src->h);
 749         if (src->el)    el_end(src->el);
 750         (void)fclose(src->fp);
 751         CFAllocatorDeallocate(NULL, src);
 752
 753         exit (EX_OK);   // insure the process exit status is 0
 754         return 0;       // ...and make main fit the ANSI spec.
 755 }