scutil.tproj/scutil.c

   1 /*
   2  * Copyright (c) 2000-2014 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
  73 #define LINE_LENGTH 2048
  74
  75
  76 __private_extern__ AuthorizationRef     authorization   = NULL;
  77 __private_extern__ InputRef             currentInput    = NULL;
  78 __private_extern__ Boolean              doDispatch      = FALSE;
  79 __private_extern__ int                  nesting         = 0;
  80 __private_extern__ CFRunLoopRef         notifyRl        = NULL;
  81 __private_extern__ CFRunLoopSourceRef   notifyRls       = NULL;
  82 __private_extern__ SCPreferencesRef     prefs           = 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         { NULL,                 0,                      NULL,   0       }
 114 };
 115
 116
 117 __private_extern__
 118 CFStringRef
 119 _copyStringFromSTDIN(CFStringRef prompt, CFStringRef defaultValue)
 120 {
 121         char            buf[1024];
 122         int             i;
 123         Boolean         is_user_prompt = (prompt != NULL && isatty(STDIN_FILENO) && isatty(STDOUT_FILENO));
 124         int             len;
 125         char            *modbuf;
 126         int             modlen;
 127         CFStringRef     utf8;
 128
 129         /* Print out a prompt to user that entry is desired */
 130         if (is_user_prompt) {
 131                 if (defaultValue != NULL) {
 132                         SCPrint(TRUE, stdout, CFSTR("%@ [%@]: "), prompt, defaultValue);
 133                 } else {
 134                         SCPrint(TRUE, stdout, CFSTR("%@: "), prompt);
 135                 }
 136         }
 137
 138         /* Get user input */
 139         if (fgets(buf, sizeof(buf), stdin) == NULL) {
 140                 return NULL;
 141         }
 142
 143         /* Prepare for trim */
 144         len = (int)strlen(buf);
 145         modbuf = buf;
 146         modlen = len;
 147
 148         /* Trim new-line */
 149         if ((modlen > 0) && (modbuf[modlen - 1] == '\n')) {
 150                 modbuf[modlen - 1] = '\0';
 151                 modlen--;
 152         }
 153
 154         /* If nothing was entered at the user prompt, set default */
 155         if (is_user_prompt && defaultValue != NULL && modlen == 0) {
 156                 CFRetain(defaultValue);
 157                 return defaultValue;
 158         }
 159
 160         /* Trim spaces from front */
 161         while (modlen > 0 && isspace(modbuf[0])) {
 162                 modbuf = &modbuf[1];
 163                 modlen--;
 164         }
 165
 166         /* Trim spaces from back */
 167         for (i = modlen - 1; i >= 0; i--) {
 168                 if (isspace(buf[i])) {
 169                         buf[i] = '\0';
 170                         modlen--;
 171                 } else {
 172                         break;
 173                 }
 174         }
 175
 176         utf8 = CFStringCreateWithBytes(NULL, (UInt8 *)modbuf, modlen, kCFStringEncodingUTF8, TRUE);
 177         return utf8;
 178 }
 179
 180 static char *
 181 getLine(char *buf, int len, InputRef src)
 182 {
 183         int     n;
 184
 185         if (src->el) {
 186                 int             count;
 187                 const char      *line;
 188
 189                 line = el_gets(src->el, &count);
 190                 if (line == NULL)
 191                         return NULL;
 192
 193                 strncpy(buf, line, len);
 194         } else {
 195                 if (fgets(buf, len, src->fp) == NULL)
 196                         return NULL;
 197         }
 198
 199         n = (int)strlen(buf);
 200         if (buf[n-1] == '\n') {
 201                 /* the entire line fit in the buffer, remove the newline */
 202                 buf[n-1] = '\0';
 203         } else if (!src->el) {
 204                 /* eat the remainder of the line */
 205                 do {
 206                         n = fgetc(src->fp);
 207                 } while ((n != '\n') && (n != EOF));
 208         }
 209
 210         if (src->h && (buf[0] != '\0')) {
 211                 HistEvent       ev;
 212
 213                 history(src->h, &ev, H_ENTER, buf);
 214         }
 215
 216
 217         return buf;
 218 }
 219
 220
 221 static char *
 222 getString(char **line)
 223 {
 224         char *s, *e, c, *string;
 225         int i, isQuoted = 0, escaped = 0;
 226
 227         if (*line == NULL) return NULL;
 228         if (**line == '\0') return NULL;
 229
 230         /* Skip leading white space */
 231         while (isspace(**line)) *line += 1;
 232
 233         /* Grab the next string */
 234         s = *line;
 235         if (*s == '\0') {
 236                 return NULL;                            /* no string available */
 237         } else if (*s == '"') {
 238                 isQuoted = 1;                           /* it's a quoted string */
 239                 s++;
 240         }
 241
 242         for (e = s; (c = *e) != '\0'; e++) {
 243                 if (isQuoted && (c == '"'))
 244                         break;                          /* end of quoted string */
 245                 if (c == '\\') {
 246                         e++;
 247                         if (*e == '\0')
 248                                 break;                  /* if premature end-of-string */
 249                         if ((*e == '"') || isspace(*e))
 250                                 escaped++;              /* if escaped quote or white space */
 251                 }
 252                 if (!isQuoted && isspace(c))
 253                         break;                          /* end of non-quoted string */
 254         }
 255
 256         string = malloc(e - s - escaped + 1);
 257
 258         for (i = 0; s < e; s++) {
 259                 string[i] = *s;
 260                 if (!((s[0] == '\\') && ((s[1] == '"') || isspace(s[1])))) i++;
 261         }
 262         string[i] = '\0';
 263
 264         if (isQuoted)
 265                 e++;                                    /* move past end of quoted string */
 266
 267         *line = e;
 268         return string;
 269 }
 270
 271
 272 __private_extern__
 273 Boolean
 274 process_line(InputRef src)
 275 {
 276         char    *arg;
 277         int     argc                    = 0;
 278         char    **argv                  = NULL;
 279         int     i;
 280         char    line[LINE_LENGTH];
 281         char    *s                      = line;
 282
 283         // if end-of-file, exit
 284         if (getLine(line, sizeof(line), src) == NULL)
 285                 return FALSE;
 286
 287         if (nesting > 0) {
 288                 SCPrint(TRUE, stdout, CFSTR("%d> %s\n"), nesting, line);
 289         }
 290
 291         // break up the input line
 292         while ((arg = getString(&s)) != NULL) {
 293                 if (argc == 0)
 294                         argv = (char **)malloc(2 * sizeof(char *));
 295                 else
 296                         argv = (char **)reallocf(argv, ((argc + 2) * sizeof(char *)));
 297                 argv[argc++] = arg;
 298         }
 299
 300         if (argc == 0) {
 301                 return TRUE;            // if no arguments
 302         }
 303
 304         /* process the command */
 305         if (*argv[0] != '#') {
 306                 argv[argc] = NULL;      // just in case...
 307                 currentInput = src;
 308                 do_command(argc, argv);
 309         }
 310
 311         /* free the arguments */
 312         for (i = 0; i < argc; i++) {
 313                 free(argv[i]);
 314         }
 315         free(argv);
 316
 317         return !termRequested;
 318 }
 319
 320
 321 static void
 322 usage(const char *command)
 323 {
 324         SCPrint(TRUE, stderr, CFSTR("usage: %s\n"), command);
 325         SCPrint(TRUE, stderr, CFSTR("\tinteractive access to the dynamic store.\n"));
 326         SCPrint(TRUE, stderr, CFSTR("\n"));
 327         SCPrint(TRUE, stderr, CFSTR("   or: %s --prefs [preference-file]\n"), command);
 328         SCPrint(TRUE, stderr, CFSTR("\tinteractive access to the [raw] stored preferences.\n"));
 329         SCPrint(TRUE, stderr, CFSTR("\n"));
 330         SCPrint(TRUE, stderr, CFSTR("   or: %s [-W] -r nodename\n"), command);
 331         SCPrint(TRUE, stderr, CFSTR("   or: %s [-W] -r address\n"), command);
 332         SCPrint(TRUE, stderr, CFSTR("   or: %s [-W] -r local-address remote-address\n"), command);
 333         SCPrint(TRUE, stderr, CFSTR("\tcheck reachability of node, address, or address pair (-W to \"watch\").\n"));
 334         SCPrint(TRUE, stderr, CFSTR("\n"));
 335         SCPrint(TRUE, stderr, CFSTR("   or: %s -w dynamic-store-key [ -t timeout ]\n"), command);
 336         SCPrint(TRUE, stderr, CFSTR("\t-w\twait for presense of dynamic store key\n"));
 337         SCPrint(TRUE, stderr, CFSTR("\t-t\ttime to wait for key\n"));
 338         SCPrint(TRUE, stderr, CFSTR("\n"));
 339         SCPrint(TRUE, stderr, CFSTR("   or: %s --get pref\n"), command);
 340         SCPrint(TRUE, stderr, CFSTR("   or: %s --set pref [newval]\n"), command);
 341         SCPrint(TRUE, stderr, CFSTR("   or: %s --get filename path key  \n"), command);
 342         SCPrint(TRUE, stderr, CFSTR("\tpref\tdisplay (or set) the specified preference.  Valid preferences\n"));
 343         SCPrint(TRUE, stderr, CFSTR("\t\tinclude:\n"));
 344         SCPrint(TRUE, stderr, CFSTR("\t\t\tComputerName, LocalHostName, HostName\n"));
 345         SCPrint(TRUE, stderr, CFSTR("\tnewval\tNew preference value to be set.  If not specified,\n"));
 346         SCPrint(TRUE, stderr, CFSTR("\t\tthe new value will be read from standard input.\n"));
 347         SCPrint(TRUE, stderr, CFSTR("\n"));
 348         SCPrint(TRUE, stderr, CFSTR("   or: %s --dns\n"), command);
 349         SCPrint(TRUE, stderr, CFSTR("\tshow DNS configuration.\n"));
 350         SCPrint(TRUE, stderr, CFSTR("\n"));
 351         SCPrint(TRUE, stderr, CFSTR("   or: %s --proxy\n"), command);
 352         SCPrint(TRUE, stderr, CFSTR("\tshow \"proxy\" configuration.\n"));
 353         SCPrint(TRUE, stderr, CFSTR("\n"));
 354         SCPrint(TRUE, stderr, CFSTR("   or: %s --nwi\n"), command);
 355         SCPrint(TRUE, stderr, CFSTR("\tshow network information\n"));
 356         SCPrint(TRUE, stderr, CFSTR("\n"));
 357         SCPrint(TRUE, stderr, CFSTR("   or: %s --nc\n"), command);
 358         SCPrint(TRUE, stderr, CFSTR("\tshow VPN network configuration information. Use --nc help for full command list\n"));
 359
 360         if (_sc_debug) {
 361                 SCPrint(TRUE, stderr, CFSTR("\n"));
 362                 SCPrint(TRUE, stderr, CFSTR("   or: %s --log IPMonitor [off|on]\n"), command);
 363                 SCPrint(TRUE, stderr, CFSTR("\tmanage logging.\n"));
 364         }
 365
 366         if (getenv("ENABLE_EXPERIMENTAL_SCUTIL_COMMANDS")) {
 367                 SCPrint(TRUE, stderr, CFSTR("\n"));
 368                 SCPrint(TRUE, stderr, CFSTR("   or: %s --net\n"), command);
 369                 SCPrint(TRUE, stderr, CFSTR("\tmanage network configuration.\n"));
 370         }
 371
 372         SCPrint(TRUE, stderr, CFSTR("\n"));
 373         SCPrint(TRUE, stderr, CFSTR("   or: %s --error err#\n"), command);
 374         SCPrint(TRUE, stderr, CFSTR("\tdisplay a descriptive message for the given error code\n"));
 375
 376         exit (EX_USAGE);
 377 }
 378
 379
 380 static char *
 381 prompt(EditLine *el)
 382 {
 383 #if     !TARGET_IPHONE_SIMULATOR
 384         return "> ";
 385 #else   // !TARGET_IPHONE_SIMULATOR
 386         return "sim> ";
 387 #endif  // !TARGET_IPHONE_SIMULATOR
 388 }
 389
 390
 391 int
 392 main(int argc, char * const argv[])
 393 {
 394         Boolean                 doDNS   = FALSE;
 395         Boolean                 doNet   = FALSE;
 396         Boolean                 doNWI   = FALSE;
 397         Boolean                 doPrefs = FALSE;
 398         Boolean                 doProxy = FALSE;
 399         Boolean                 doReach = FALSE;
 400         Boolean                 doSnap  = FALSE;
 401         char                    *error  = NULL;
 402         char                    *get    = NULL;
 403         char                    *log    = NULL;
 404         extern int              optind;
 405         int                     opt;
 406         int                     opti;
 407         const char              *prog   = argv[0];
 408         char                    *renew  = NULL;
 409         char                    *set    = NULL;
 410         char                    *nc_cmd = NULL;
 411         InputRef                src;
 412         int                     timeout = 15;   /* default timeout (in seconds) */
 413         char                    *wait   = NULL;
 414         Boolean                 watch   = FALSE;
 415         int                     xStore  = 0;    /* non dynamic store command line options */
 416
 417         /* process any arguments */
 418
 419         while ((opt = getopt_long(argc, argv, "dDvprt:w:W", longopts, &opti)) != -1)
 420                 switch(opt) {
 421                 case 'd':
 422                         _sc_debug = TRUE;
 423                         _sc_log   = FALSE;      /* enable framework logging */
 424                         break;
 425                 case 'D':
 426                         doDispatch = TRUE;
 427                         break;
 428                 case 'v':
 429                         _sc_verbose = TRUE;
 430                         _sc_log     = FALSE;    /* enable framework logging */
 431                         break;
 432                 case 'p':
 433                         enablePrivateAPI = TRUE;
 434                         break;
 435                 case 'r':
 436                         doReach = TRUE;
 437                         xStore++;
 438                         break;
 439                 case 't':
 440                         timeout = atoi(optarg);
 441                         break;
 442                 case 'w':
 443                         wait = optarg;
 444                         xStore++;
 445                         break;
 446                 case 'W':
 447                         watch = TRUE;
 448                         break;
 449                 case 0:
 450                         if        (strcmp(longopts[opti].name, "dns") == 0) {
 451                                 doDNS = TRUE;
 452                                 xStore++;
 453                         } else if (strcmp(longopts[opti].name, "error") == 0) {
 454                                 error = optarg;
 455                                 xStore++;
 456                         } else if (strcmp(longopts[opti].name, "get") == 0) {
 457                                 get = optarg;
 458                                 xStore++;
 459                         } else if (strcmp(longopts[opti].name, "nc") == 0) {
 460                                 nc_cmd = optarg;
 461                                 xStore++;
 462                         } else if (strcmp(longopts[opti].name, "net") == 0) {
 463                                 doNet = TRUE;
 464                                 xStore++;
 465                         } else if (strcmp(longopts[opti].name, "nwi") == 0) {
 466                                 doNWI = TRUE;
 467                                 xStore++;
 468                         } else if (strcmp(longopts[opti].name, "prefs") == 0) {
 469                                 doPrefs = TRUE;
 470                                 xStore++;
 471                         } else if (strcmp(longopts[opti].name, "proxy") == 0) {
 472                                 doProxy = TRUE;
 473                                 xStore++;
 474                         } else if (strcmp(longopts[opti].name, "renew") == 0) {
 475                                 renew = optarg;
 476                                 xStore++;
 477                         } else if (strcmp(longopts[opti].name, "set") == 0) {
 478                                 set = optarg;
 479                                 xStore++;
 480                         } else if (strcmp(longopts[opti].name, "snapshot") == 0) {
 481                                 doSnap = TRUE;
 482                                 xStore++;
 483                         } else if (strcmp(longopts[opti].name, "log") == 0) {
 484                                 log = optarg;
 485                                 xStore++;
 486                         } else if (strcmp(longopts[opti].name, "user") == 0) {
 487                                 username = CFStringCreateWithCString(NULL, optarg, kCFStringEncodingUTF8);
 488                         } else if (strcmp(longopts[opti].name, "password") == 0) {
 489                                 password = CFStringCreateWithCString(NULL, optarg, kCFStringEncodingUTF8);
 490                         } else if (strcmp(longopts[opti].name, "secret") == 0) {
 491                                 sharedsecret = CFStringCreateWithCString(NULL, optarg, kCFStringEncodingUTF8);
 492                         }
 493                         break;
 494                 case '?':
 495                 default :
 496                         usage(prog);
 497                 }
 498         argc -= optind;
 499         argv += optind;
 500
 501         if (xStore > 1) {
 502                 // if we are attempting to process more than one type of request
 503                 usage(prog);
 504         }
 505
 506         /* are we checking (or watching) the reachability of a host/address */
 507         if (doReach) {
 508                 if (argc < 1) {
 509                         usage(prog);
 510                 }
 511                 if (watch) {
 512                         do_watchReachability(argc, (char **)argv);
 513                 } else {
 514                         do_checkReachability(argc, (char **)argv);
 515                 }
 516                 /* NOT REACHED */
 517         }
 518
 519         /* are we waiting on the presense of a dynamic store key */
 520         if (wait) {
 521                 do_wait(wait, timeout);
 522                 /* NOT REACHED */
 523         }
 524
 525         /* are we looking up the DNS configuration */
 526         if (doDNS) {
 527                 if (watch) {
 528                         do_watchDNSConfiguration(argc, (char **)argv);
 529                 } else {
 530                         do_showDNSConfiguration(argc, (char **)argv);
 531                 }
 532                 /* NOT REACHED */
 533         }
 534
 535         if (doNWI) {
 536                 if (watch) {
 537                         do_watchNWI(argc, (char**)argv);
 538                 } else {
 539                         do_showNWI(argc, (char**)argv);
 540                 }
 541                 /* NOT REACHED */
 542         }
 543
 544         if (doSnap) {
 545                 if (!enablePrivateAPI
 546 #if     !TARGET_IPHONE_SIMULATOR
 547                     || (geteuid() != 0)
 548 #endif  // !TARGET_IPHONE_SIMULATOR
 549                    ) {
 550                         usage(prog);
 551                 }
 552
 553                 do_open(0, NULL);       /* open the dynamic store */
 554                 do_snapshot(argc, (char**)argv);
 555                 exit(0);
 556         }
 557
 558         /* are we translating error #'s to descriptive text */
 559         if (error != NULL) {
 560                 int     sc_status       = atoi(error);
 561
 562                 SCPrint(TRUE, stdout, CFSTR("Error: 0x%08x %d %s\n"),
 563                         sc_status,
 564                         sc_status,
 565                         SCErrorString(sc_status));
 566                 exit(0);
 567         }
 568
 569         /* are we looking up a preference value */
 570         if (get) {
 571                 if (argc != 2) {
 572                         if (findPref(get) < 0) {
 573                                 usage(prog);
 574                         }
 575                 } else {
 576                         /* need to go back one argument
 577                          * for the filename */
 578                         argc++;
 579                         argv--;
 580                 }
 581
 582                 do_getPref(get, argc, (char **)argv);
 583                 /* NOT REACHED */
 584         }
 585
 586         /* are we looking up the proxy configuration */
 587         if (doProxy) {
 588                 do_showProxyConfiguration(argc, (char **)argv);
 589                 /* NOT REACHED */
 590         }
 591
 592         /* are we changing a preference value */
 593         if (set) {
 594                 if (findPref(set) < 0) {
 595                         usage(prog);
 596                 }
 597                 do_setPref(set, argc, (char **)argv);
 598                 /* NOT REACHED */
 599         }
 600
 601         /* verbose log */
 602         if (log != NULL) {
 603                 if (strcasecmp(log, "IPMonitor")) {
 604                         usage(prog);
 605                 }
 606                 do_log(log, argc, (char * *)argv);
 607                 /* NOT REACHED */
 608         }
 609
 610         /* network connection commands */
 611         if (nc_cmd) {
 612                 if (find_nc_cmd(nc_cmd) < 0) {
 613                         usage(prog);
 614                 }
 615                 do_nc_cmd(nc_cmd, argc, (char **)argv, watch);
 616                 /* NOT REACHED */
 617         }
 618
 619         if (doNet) {
 620                 /* if we are going to be managing the network configuration */
 621                 commands  = (cmdInfo *)commands_net;
 622                 nCommands = nCommands_net;
 623
 624                 if (!getenv("ENABLE_EXPERIMENTAL_SCUTIL_COMMANDS")) {
 625                         usage(prog);
 626                 }
 627
 628                 do_net_init();                          /* initialization */
 629                 do_net_open(argc, (char **)argv);       /* open prefs */
 630         } else if (doPrefs) {
 631                 /* if we are going to be managing the network configuration */
 632                 commands  = (cmdInfo *)commands_prefs;
 633                 nCommands = nCommands_prefs;
 634
 635                 do_dictInit(0, NULL);                   /* start with an empty dictionary */
 636                 do_prefs_init();                        /* initialization */
 637                 do_prefs_open(argc, (char **)argv);     /* open prefs */
 638         } else {
 639                 /* if we are going to be managing the dynamic store */
 640                 commands  = (cmdInfo *)commands_store;
 641                 nCommands = nCommands_store;
 642
 643                 do_dictInit(0, NULL);   /* start with an empty dictionary */
 644                 do_open(0, NULL);       /* open the dynamic store */
 645         }
 646
 647         /* are we trying to renew a DHCP lease */
 648         if (renew != NULL) {
 649                 do_renew(renew);
 650                 /* NOT REACHED */
 651         }
 652
 653         /* allocate command input stream */
 654         src = (InputRef)CFAllocatorAllocate(NULL, sizeof(Input), 0);
 655         src->fp = stdin;
 656         src->el = NULL;
 657         src->h  = NULL;
 658
 659         if (isatty(fileno(src->fp))) {
 660                 int             editmode        = 1;
 661                 HistEvent       ev;
 662                 struct termios  t;
 663
 664                 if (tcgetattr(fileno(src->fp), &t) != -1) {
 665                         if ((t.c_lflag & ECHO) == 0) {
 666                                 editmode = 0;
 667                         }
 668                 }
 669                 src->el = el_init(prog, src->fp, stdout, stderr);
 670                 src->h  = history_init();
 671
 672                 (void)history(src->h, &ev, H_SETSIZE, INT_MAX);
 673                 el_set(src->el, EL_HIST, history, src->h);
 674
 675                 if (!editmode) {
 676                         el_set(src->el, EL_EDITMODE, 0);
 677                 }
 678
 679                 el_set(src->el, EL_EDITOR, "emacs");
 680                 el_set(src->el, EL_PROMPT, prompt);
 681
 682                 el_source(src->el, NULL);
 683
 684                 if ((el_get(src->el, EL_EDITMODE, &editmode) != -1) && editmode != 0) {
 685                         el_set(src->el, EL_SIGNAL, 1);
 686                 } else {
 687                         history_end(src->h);
 688                         src->h = NULL;
 689                         el_end(src->el);
 690                         src->el = NULL;
 691                 }
 692         }
 693
 694         while (TRUE) {
 695                 Boolean ok;
 696
 697                 ok = process_line(src);
 698                 if (!ok) {
 699                         break;
 700                 }
 701         }
 702
 703         /* close the socket, free resources */
 704         if (src->h)     history_end(src->h);
 705         if (src->el)    el_end(src->el);
 706         (void)fclose(src->fp);
 707         CFAllocatorDeallocate(NULL, src);
 708
 709         exit (EX_OK);   // insure the process exit status is 0
 710         return 0;       // ...and make main fit the ANSI spec.
 711 }