popt/popt.c

   1 /** \ingroup popt
   2  * @file
   3  */
   4
   5 /* (C) 1998-2002 Red Hat, Inc. -- Licensing details are in the COPYING
   6    file accompanying popt source distributions, available from
   7    ftp://ftp.rpm.org/pub/rpm/dist */
   8
   9 #undef  MYDEBUG
  10
  11 #include "system.h"
  12
  13 #include <float.h>
  14 #include <math.h>
  15 #include <unistd.h>
  16 #include <limits.h>
  17 #include <errno.h>
  18
  19 #include "poptint.h"
  20
  21 #ifdef HAVE_STDALIGN_H
  22 #include <stdalign.h>
  23 #define ALIGNOF(x) alignof(x)
  24 #elif defined __GNUC__
  25 #define ALIGNOF(x) __alignof__(x)
  26 #else
  27 #define ALIGNOF(x) sizeof(x)
  28 #endif
  29
  30 #ifdef  MYDEBUG
  31 int _popt_debug = 0;
  32 #endif
  33
  34 unsigned int _poptArgMask = POPT_ARG_MASK;
  35 unsigned int _poptGroupMask = POPT_GROUP_MASK;
  36
  37 #if !defined(HAVE_STRERROR)
  38 static char * strerror(int errno)
  39 {
  40     extern int sys_nerr;
  41     extern char * sys_errlist[];
  42
  43     if ((0 <= errno) && (errno < sys_nerr))
  44         return sys_errlist[errno];
  45     else
  46         return POPT_("unknown errno");
  47 }
  48 #endif
  49
  50 #ifdef MYDEBUG
  51 static void prtcon(const char *msg, poptContext con)
  52 {
  53     if (msg) fprintf(stderr, "%s", msg);
  54     fprintf(stderr, "\tcon %p os %p nextCharArg \"%s\" nextArg \"%s\" argv[%d] \"%s\"\n",
  55         con, con->os,
  56         (con->os->nextCharArg ? con->os->nextCharArg : ""),
  57         (con->os->nextArg ? con->os->nextArg : ""),
  58         con->os->next,
  59         (con->os->argv && con->os->argv[con->os->next]
  60                 ? con->os->argv[con->os->next] : ""));
  61 }
  62 #endif
  63
  64 void poptSetExecPath(poptContext con, const char * path, int allowAbsolute)
  65 {
  66     con->execPath = _free(con->execPath);
  67     con->execPath = xstrdup(path);
  68     con->execAbsolute = allowAbsolute;
  69     return;
  70 }
  71
  72 static void invokeCallbacksPRE(poptContext con, const struct poptOption * opt)
  73 {
  74     if (opt != NULL)
  75     for (; opt->longName || opt->shortName || opt->arg; opt++) {
  76         poptArg arg = { .ptr = opt->arg };
  77         if (arg.ptr)
  78         switch (poptArgType(opt)) {
  79         case POPT_ARG_INCLUDE_TABLE:    /* Recurse on included sub-tables. */
  80             poptSubstituteHelpI18N(arg.opt);    /* XXX side effects */
  81             invokeCallbacksPRE(con, arg.opt);
  82             break;
  83         case POPT_ARG_CALLBACK:         /* Perform callback. */
  84             if (!CBF_ISSET(opt, PRE))
  85                 break;
  86             arg.cb(con, POPT_CALLBACK_REASON_PRE, NULL, NULL, opt->descrip);
  87             break;
  88         }
  89     }
  90 }
  91
  92 static void invokeCallbacksPOST(poptContext con, const struct poptOption * opt)
  93 {
  94     if (opt != NULL)
  95     for (; opt->longName || opt->shortName || opt->arg; opt++) {
  96         poptArg arg = { .ptr = opt->arg };
  97         if (arg.ptr)
  98         switch (poptArgType(opt)) {
  99         case POPT_ARG_INCLUDE_TABLE:    /* Recurse on included sub-tables. */
 100             poptSubstituteHelpI18N(arg.opt);    /* XXX side effects */
 101             invokeCallbacksPOST(con, arg.opt);
 102             break;
 103         case POPT_ARG_CALLBACK:         /* Perform callback. */
 104             if (!CBF_ISSET(opt, POST))
 105                 break;
 106             arg.cb(con, POPT_CALLBACK_REASON_POST, NULL, NULL, opt->descrip);
 107             break;
 108         }
 109     }
 110 }
 111
 112 static void invokeCallbacksOPTION(poptContext con,
 113                                 const struct poptOption * opt,
 114                                 const struct poptOption * myOpt,
 115                                 const void * myData, int shorty)
 116 {
 117     const struct poptOption * cbopt = NULL;
 118     poptArg cbarg = { .ptr = NULL };
 119
 120     if (opt != NULL)
 121     for (; opt->longName || opt->shortName || opt->arg; opt++) {
 122         poptArg arg = { .ptr = opt->arg };
 123         switch (poptArgType(opt)) {
 124         case POPT_ARG_INCLUDE_TABLE:    /* Recurse on included sub-tables. */
 125             poptSubstituteHelpI18N(arg.opt);    /* XXX side effects */
 126             if (opt->arg != NULL)
 127                 invokeCallbacksOPTION(con, opt->arg, myOpt, myData, shorty);
 128             break;
 129         case POPT_ARG_CALLBACK:         /* Save callback info. */
 130             if (CBF_ISSET(opt, SKIPOPTION))
 131                 break;
 132             cbopt = opt;
 133             cbarg.ptr = opt->arg;
 134             break;
 135         default:                /* Perform callback on matching option. */
 136             if (cbopt == NULL || cbarg.cb == NULL)
 137                 break;
 138             if ((myOpt->shortName && opt->shortName && shorty &&
 139                         myOpt->shortName == opt->shortName)
 140              || (myOpt->longName != NULL && opt->longName != NULL &&
 141                         !strcmp(myOpt->longName, opt->longName)))
 142             {   const void *cbData = (cbopt->descrip ? cbopt->descrip : myData);
 143                 cbarg.cb(con, POPT_CALLBACK_REASON_OPTION,
 144                         myOpt, con->os->nextArg, cbData);
 145                 /* Terminate (unless explcitly continuing). */
 146                 if (!CBF_ISSET(cbopt, CONTINUE))
 147                     return;
 148             }
 149             break;
 150         }
 151     }
 152 }
 153
 154 poptContext poptGetContext(const char * name, int argc, const char ** argv,
 155                         const struct poptOption * options, unsigned int flags)
 156 {
 157     poptContext con = malloc(sizeof(*con));
 158
 159     if (con == NULL) return NULL;       /* XXX can't happen */
 160     memset(con, 0, sizeof(*con));
 161
 162     con->os = con->optionStack;
 163     con->os->argc = argc;
 164     con->os->argv = argv;
 165     con->os->argb = NULL;
 166
 167     if (!(flags & POPT_CONTEXT_KEEP_FIRST))
 168         con->os->next = 1;              /* skip argv[0] */
 169
 170     con->leftovers = calloc( (size_t)(argc + 1), sizeof(*con->leftovers) );
 171     con->allocLeftovers = argc + 1;
 172     con->options = options;
 173     con->aliases = NULL;
 174     con->numAliases = 0;
 175     con->flags = flags;
 176     con->execs = NULL;
 177     con->numExecs = 0;
 178     con->execFail = NULL;
 179     con->finalArgvAlloced = argc * 2;
 180     con->finalArgv = calloc( (size_t)con->finalArgvAlloced, sizeof(*con->finalArgv) );
 181     con->execAbsolute = 1;
 182     con->arg_strip = NULL;
 183
 184     if (getenv("POSIXLY_CORRECT") || getenv("POSIX_ME_HARDER"))
 185         con->flags |= POPT_CONTEXT_POSIXMEHARDER;
 186
 187     if (name)
 188         con->appName = xstrdup(name);
 189
 190     invokeCallbacksPRE(con, con->options);
 191
 192     return con;
 193 }
 194
 195 static void cleanOSE(struct optionStackEntry *os)
 196 {
 197     os->nextArg = _free(os->nextArg);
 198     os->argv = _free(os->argv);
 199     os->argb = PBM_FREE(os->argb);
 200 }
 201
 202 void poptResetContext(poptContext con)
 203 {
 204     int i;
 205
 206     if (con == NULL) return;
 207     while (con->os > con->optionStack) {
 208         cleanOSE(con->os--);
 209     }
 210     con->os->argb = PBM_FREE(con->os->argb);
 211     con->os->currAlias = NULL;
 212     con->os->nextCharArg = NULL;
 213     con->os->nextArg = _free(con->os->nextArg);
 214     if (!(con->flags & POPT_CONTEXT_KEEP_FIRST))
 215         con->os->next = 1;              /* skip argv[0] */
 216     else
 217         con->os->next = 0;
 218
 219     for (i = 0; i < con->numLeftovers; i++) {
 220         con->leftovers[i] = _free(con->leftovers[i]);
 221     }
 222     con->numLeftovers = 0;
 223     con->nextLeftover = 0;
 224     con->restLeftover = 0;
 225     con->doExec = NULL;
 226     con->execFail = _free(con->execFail);
 227
 228     if (con->finalArgv != NULL)
 229     for (i = 0; i < con->finalArgvCount; i++) {
 230         con->finalArgv[i] = _free(con->finalArgv[i]);
 231     }
 232
 233     con->finalArgvCount = 0;
 234     con->arg_strip = PBM_FREE(con->arg_strip);
 235     return;
 236 }
 237
 238 /* Only one of longName, shortName should be set, not both. */
 239 static int handleExec(poptContext con,
 240                 const char * longName, char shortName)
 241 {
 242     poptItem item;
 243     int i;
 244
 245     if (con->execs == NULL || con->numExecs <= 0) /* XXX can't happen */
 246         return 0;
 247
 248     for (i = con->numExecs - 1; i >= 0; i--) {
 249         item = con->execs + i;
 250         if (longName && !(item->option.longName &&
 251                         !strcmp(longName, item->option.longName)))
 252             continue;
 253         else if (shortName != item->option.shortName)
 254             continue;
 255         break;
 256     }
 257     if (i < 0) return 0;
 258
 259
 260     if (con->flags & POPT_CONTEXT_NO_EXEC)
 261         return 1;
 262
 263     if (con->doExec == NULL) {
 264         con->doExec = con->execs + i;
 265         return 1;
 266     }
 267
 268     /* We already have an exec to do; remember this option for next
 269        time 'round */
 270     if ((con->finalArgvCount + 1) >= (con->finalArgvAlloced)) {
 271         con->finalArgvAlloced += 10;
 272         con->finalArgv = realloc(con->finalArgv,
 273                         sizeof(*con->finalArgv) * con->finalArgvAlloced);
 274     }
 275
 276     i = con->finalArgvCount++;
 277     if (con->finalArgv != NULL) /* XXX can't happen */
 278     {   char *s  = malloc((longName ? strlen(longName) : 0) + sizeof("--"));
 279         if (s != NULL) {        /* XXX can't happen */
 280             con->finalArgv[i] = s;
 281             *s++ = '-';
 282             if (longName)
 283                 s = stpcpy( stpcpy(s, "-"), longName);
 284             else
 285                 *s++ = shortName;
 286             *s = '\0';
 287         } else
 288             con->finalArgv[i] = NULL;
 289     }
 290
 291     return 1;
 292 }
 293
 294 /**
 295  * Compare long option for equality, adjusting for POPT_ARGFLAG_TOGGLE.
 296  * @param opt           option
 297  * @param longName      arg option
 298  * @param longNameLen   arg option length
 299  * @return              does long option match?
 300  */
 301 static int
 302 longOptionStrcmp(const struct poptOption * opt,
 303                 const char * longName, size_t longNameLen)
 304 {
 305     const char * optLongName = opt->longName;
 306     int rc;
 307
 308     if (optLongName == NULL || longName == NULL)        /* XXX can't heppen */
 309         return 0;
 310
 311     if (F_ISSET(opt, TOGGLE)) {
 312         if (optLongName[0] == 'n' && optLongName[1] == 'o') {
 313             optLongName += sizeof("no") - 1;
 314             if (optLongName[0] == '-')
 315                 optLongName++;
 316         }
 317         if (longName[0] == 'n' && longName[1] == 'o') {
 318             longName += sizeof("no") - 1;
 319             longNameLen -= sizeof("no") - 1;
 320             if (longName[0] == '-') {
 321                 longName++;
 322                 longNameLen--;
 323             }
 324         }
 325     }
 326     rc = (int)(strlen(optLongName) == longNameLen);
 327     if (rc)
 328         rc = (int)(strncmp(optLongName, longName, longNameLen) == 0);
 329     return rc;
 330 }
 331
 332 /* Only one of longName, shortName may be set at a time */
 333 static int handleAlias(poptContext con,
 334                 const char * longName, size_t longNameLen,
 335                 char shortName,
 336                 const char * nextArg)
 337 {
 338     poptItem item = con->os->currAlias;
 339     int rc;
 340     int i;
 341
 342     if (item) {
 343         if (longName && item->option.longName != NULL
 344          && longOptionStrcmp(&item->option, longName, longNameLen))
 345             return 0;
 346         else
 347         if (shortName && shortName == item->option.shortName)
 348             return 0;
 349     }
 350
 351     if (con->aliases == NULL || con->numAliases <= 0) /* XXX can't happen */
 352         return 0;
 353
 354     for (i = con->numAliases - 1; i >= 0; i--) {
 355         item = con->aliases + i;
 356         if (longName) {
 357             if (item->option.longName == NULL)
 358                 continue;
 359             if (!longOptionStrcmp(&item->option, longName, longNameLen))
 360                 continue;
 361         } else if (shortName != item->option.shortName)
 362             continue;
 363         break;
 364     }
 365     if (i < 0) return 0;
 366
 367     if ((con->os - con->optionStack + 1) == POPT_OPTION_DEPTH)
 368         return POPT_ERROR_OPTSTOODEEP;
 369
 370     if (longName == NULL && nextArg != NULL && *nextArg != '\0')
 371         con->os->nextCharArg = nextArg;
 372
 373     con->os++;
 374     con->os->next = 0;
 375     con->os->stuffed = 0;
 376     con->os->nextArg = NULL;
 377     con->os->nextCharArg = NULL;
 378     con->os->currAlias = con->aliases + i;
 379     {   const char ** av;
 380         int ac = con->os->currAlias->argc;
 381         /* Append --foo=bar arg to alias argv array (if present). */
 382         if (longName && nextArg != NULL && *nextArg != '\0') {
 383             av = malloc((ac + 1 + 1) * sizeof(*av));
 384             if (av != NULL) {   /* XXX won't happen. */
 385                 for (i = 0; i < ac; i++) {
 386                     av[i] = con->os->currAlias->argv[i];
 387                 }
 388                 av[ac++] = nextArg;
 389                 av[ac] = NULL;
 390             } else      /* XXX revert to old popt behavior if malloc fails. */
 391                 av = con->os->currAlias->argv;
 392         } else
 393             av = con->os->currAlias->argv;
 394         rc = poptDupArgv(ac, av, &con->os->argc, &con->os->argv);
 395         if (av != NULL && av != con->os->currAlias->argv)
 396             free(av);
 397     }
 398     con->os->argb = NULL;
 399
 400     return (rc ? rc : 1);
 401 }
 402
 403 /**
 404  * Return absolute path to executable by searching PATH.
 405  * @param argv0         name of executable
 406  * @return              (malloc'd) absolute path to executable (or NULL)
 407  */
 408 static
 409 const char * findProgramPath(const char * argv0)
 410 {
 411     char *path = NULL, *s = NULL, *se;
 412     char *t = NULL;
 413
 414     if (argv0 == NULL) return NULL;     /* XXX can't happen */
 415
 416     /* If there is a / in argv[0], it has to be an absolute path. */
 417     /* XXX Hmmm, why not if (argv0[0] == '/') ... instead? */
 418     if (strchr(argv0, '/'))
 419         return xstrdup(argv0);
 420
 421     if ((path = getenv("PATH")) == NULL || (path = xstrdup(path)) == NULL)
 422         return NULL;
 423
 424     /* The return buffer in t is big enough for any path. */
 425     if ((t = malloc(strlen(path) + strlen(argv0) + sizeof("/"))) != NULL)
 426     for (s = path; s && *s; s = se) {
 427
 428         /* Snip PATH element into [s,se). */
 429         if ((se = strchr(s, ':')))
 430             *se++ = '\0';
 431
 432         /* Append argv0 to PATH element. */
 433         (void) stpcpy(stpcpy(stpcpy(t, s), "/"), argv0);
 434
 435         /* If file is executable, bingo! */
 436         if (!access(t, X_OK))
 437             break;
 438     }
 439
 440     /* If no executable was found in PATH, return NULL. */
 441     if (!(s && *s) && t != NULL)
 442         t = _free(t);
 443     path = _free(path);
 444
 445     return t;
 446 }
 447
 448 static int execCommand(poptContext con)
 449 {
 450     poptItem item = con->doExec;
 451     poptArgv argv = NULL;
 452     int argc = 0;
 453     int rc;
 454     int ec = POPT_ERROR_ERRNO;
 455
 456     if (item == NULL) /*XXX can't happen*/
 457         return POPT_ERROR_NOARG;
 458
 459     if (item->argv == NULL || item->argc < 1 ||
 460         (!con->execAbsolute && strchr(item->argv[0], '/')))
 461             return POPT_ERROR_NOARG;
 462
 463     argv = malloc(sizeof(*argv) *
 464                         (6 + item->argc + con->numLeftovers + con->finalArgvCount));
 465     if (argv == NULL) return POPT_ERROR_MALLOC;
 466
 467     if (!strchr(item->argv[0], '/') && con->execPath != NULL) {
 468         char *s = malloc(strlen(con->execPath) + strlen(item->argv[0]) + sizeof("/"));
 469         if (s)
 470             (void)stpcpy(stpcpy(stpcpy(s, con->execPath), "/"), item->argv[0]);
 471
 472         argv[argc] = s;
 473     } else
 474         argv[argc] = findProgramPath(item->argv[0]);
 475     if (argv[argc++] == NULL) {
 476         ec = POPT_ERROR_NOARG;
 477         goto exit;
 478     }
 479
 480     if (item->argc > 1) {
 481         memcpy(argv + argc, item->argv + 1, sizeof(*argv) * (item->argc - 1));
 482         argc += (item->argc - 1);
 483     }
 484
 485     if (con->finalArgv != NULL && con->finalArgvCount > 0) {
 486         memcpy(argv + argc, con->finalArgv,
 487                 sizeof(*argv) * con->finalArgvCount);
 488         argc += con->finalArgvCount;
 489     }
 490
 491     if (con->leftovers != NULL && con->numLeftovers > 0) {
 492         memcpy(argv + argc, con->leftovers, sizeof(*argv) * con->numLeftovers);
 493         argc += con->numLeftovers;
 494     }
 495
 496     argv[argc] = NULL;
 497
 498 #if defined(hpux) || defined(__hpux)
 499     rc = setresgid(getgid(), getgid(),-1);
 500     if (rc) goto exit;
 501     rc = setresuid(getuid(), getuid(),-1);
 502     if (rc) goto exit;
 503 #else
 504 /*
 505  * XXX " ... on BSD systems setuid() should be preferred over setreuid()"
 506  * XXX  sez' Timur Bakeyev <mc@bat.ru>
 507  * XXX  from Norbert Warmuth <nwarmuth@privat.circular.de>
 508  */
 509 #if defined(HAVE_SETUID)
 510     rc = setgid(getgid());
 511     if (rc) goto exit;
 512     rc = setuid(getuid());
 513     if (rc) goto exit;
 514 #elif defined (HAVE_SETREUID)
 515     rc = setregid(getgid(), getgid());
 516     if (rc) goto exit;
 517     rc = setreuid(getuid(), getuid());
 518     if (rc) goto exit;
 519 #else
 520     /* refuse to exec if we cannot drop suid/sgid privileges */
 521     if (getuid() != geteuid() || getgid() != getegid()) {
 522         errno = ENOTSUP;
 523         goto exit;
 524     }
 525 #endif
 526 #endif
 527
 528 #ifdef  MYDEBUG
 529 if (_popt_debug)
 530     {   poptArgv avp;
 531         fprintf(stderr, "==> execvp(%s) argv[%d]:", argv[0], argc);
 532         for (avp = argv; *avp; avp++)
 533             fprintf(stderr, " '%s'", *avp);
 534         fprintf(stderr, "\n");
 535     }
 536 #endif
 537
 538     rc = execvp(argv[0], (char *const *)argv);
 539
 540     /* only reached on execvp() failure */
 541     con->execFail = xstrdup(argv[0]);
 542
 543 exit:
 544     if (argv) {
 545         if (argv[0])
 546             free((void *)argv[0]);
 547         free(argv);
 548     }
 549     return ec;
 550 }
 551
 552 static const struct poptOption *
 553 findOption(const struct poptOption * opt,
 554                 const char * longName, size_t longNameLen,
 555                 char shortName,
 556                 poptCallbackType * callback,
 557                 const void ** callbackData,
 558                 unsigned int argInfo)
 559 {
 560     const struct poptOption * cb = NULL;
 561     poptArg cbarg = { .ptr = NULL };
 562
 563     /* This happens when a single - is given */
 564     if (LF_ISSET(ONEDASH) && !shortName && (longName && *longName == '\0'))
 565         shortName = '-';
 566
 567     for (; opt->longName || opt->shortName || opt->arg; opt++) {
 568         poptArg arg = { .ptr = opt->arg };
 569
 570         switch (poptArgType(opt)) {
 571         case POPT_ARG_INCLUDE_TABLE:    /* Recurse on included sub-tables. */
 572         {   const struct poptOption * opt2;
 573
 574             poptSubstituteHelpI18N(arg.opt);    /* XXX side effects */
 575             if (arg.ptr == NULL) continue;      /* XXX program error */
 576             opt2 = findOption(arg.opt, longName, longNameLen, shortName, callback,
 577                               callbackData, argInfo);
 578             if (opt2 == NULL) continue;
 579             /* Sub-table data will be inheirited if no data yet. */
 580             if (callback && *callback
 581              && callbackData && *callbackData == NULL)
 582                 *callbackData = opt->descrip;
 583             return opt2;
 584         }   break;
 585         case POPT_ARG_CALLBACK:
 586             cb = opt;
 587             cbarg.ptr = opt->arg;
 588             continue;
 589             break;
 590         default:
 591             break;
 592         }
 593
 594         if (longName != NULL && opt->longName != NULL &&
 595                    (!LF_ISSET(ONEDASH) || F_ISSET(opt, ONEDASH)) &&
 596                    longOptionStrcmp(opt, longName, longNameLen))
 597         {
 598             break;
 599         } else if (shortName && shortName == opt->shortName) {
 600             break;
 601         }
 602     }
 603
 604     if (opt->longName == NULL && !opt->shortName)
 605         return NULL;
 606
 607     if (callback)
 608         *callback = (cb ? cbarg.cb : NULL);
 609     if (callbackData)
 610         *callbackData = (cb && !CBF_ISSET(cb, INC_DATA) ? cb->descrip : NULL);
 611
 612     return opt;
 613 }
 614
 615 static const char * findNextArg(poptContext con,
 616                 unsigned argx, int delete_arg)
 617 {
 618     struct optionStackEntry * os = con->os;
 619     const char * arg;
 620
 621     do {
 622         int i;
 623         arg = NULL;
 624         while (os->next == os->argc && os > con->optionStack) os--;
 625         if (os->next == os->argc && os == con->optionStack) break;
 626         if (os->argv != NULL)
 627         for (i = os->next; i < os->argc; i++) {
 628             if (os->argb && PBM_ISSET(i, os->argb))
 629                 continue;
 630             if (*os->argv[i] == '-')
 631                 continue;
 632             if (--argx > 0)
 633                 continue;
 634             arg = os->argv[i];
 635             if (delete_arg) {
 636                 if (os->argb == NULL) os->argb = PBM_ALLOC(os->argc);
 637                 if (os->argb != NULL)   /* XXX can't happen */
 638                     PBM_SET(i, os->argb);
 639             }
 640             break;
 641         }
 642         if (os > con->optionStack) os--;
 643     } while (arg == NULL);
 644     return arg;
 645 }
 646
 647 static const char *
 648 expandNextArg(poptContext con, const char * s)
 649 {
 650     const char * a = NULL;
 651     char *t, *t_tmp, *te;
 652     size_t tn = strlen(s) + 1;
 653     char c;
 654
 655     te = t = malloc(tn);
 656     if (t == NULL) return NULL;         /* XXX can't happen */
 657     *t = '\0';
 658     while ((c = *s++) != '\0') {
 659         switch (c) {
 660 #if 0   /* XXX can't do this */
 661         case '\\':      /* escape */
 662             c = *s++;
 663             break;
 664 #endif
 665         case '!':
 666             if (!(s[0] == '#' && s[1] == ':' && s[2] == '+'))
 667                 break;
 668             /* XXX Make sure that findNextArg deletes only next arg. */
 669             if (a == NULL) {
 670                 if ((a = findNextArg(con, 1U, 1)) == NULL)
 671                     break;
 672             }
 673             s += sizeof("#:+") - 1;
 674
 675             tn += strlen(a);
 676             {   size_t pos = (size_t) (te - t);
 677                 if ((t_tmp = realloc(t, tn)) == NULL) { /* XXX can't happen */
 678                     free(t);
 679                     return NULL;
 680                 }
 681                 t = t_tmp;
 682                 te = stpcpy(t + pos, a);
 683             }
 684             continue;
 685             break;
 686         default:
 687             break;
 688         }
 689         *te++ = c;
 690     }
 691     *te++ = '\0';
 692     /* If the new string is longer than needed, shorten. */
 693     if ((t + tn) > te) {
 694         if ((te = realloc(t, (size_t)(te - t))) == NULL)
 695             free(t);
 696         t = te;
 697     }
 698     return t;
 699 }
 700
 701 static void poptStripArg(poptContext con, int which)
 702 {
 703     if (con->arg_strip == NULL)
 704         con->arg_strip = PBM_ALLOC(con->optionStack[0].argc);
 705     if (con->arg_strip != NULL)         /* XXX can't happen */
 706     PBM_SET(which, con->arg_strip);
 707     return;
 708 }
 709
 710 unsigned int _poptBitsN = _POPT_BITS_N;
 711 unsigned int _poptBitsM = _POPT_BITS_M;
 712 unsigned int _poptBitsK = _POPT_BITS_K;
 713
 714 static int _poptBitsNew(poptBits *bitsp)
 715 {
 716     if (bitsp == NULL)
 717         return POPT_ERROR_NULLARG;
 718
 719     /* XXX handle negated initialization. */
 720     if (*bitsp == NULL) {
 721         if (_poptBitsN == 0) {
 722             _poptBitsN = _POPT_BITS_N;
 723             _poptBitsM = _POPT_BITS_M;
 724         }
 725         if (_poptBitsM == 0U) _poptBitsM = (3 * _poptBitsN) / 2;
 726         if (_poptBitsK == 0U || _poptBitsK > 32U) _poptBitsK = _POPT_BITS_K;
 727         *bitsp = PBM_ALLOC(_poptBitsM-1);
 728     }
 729     return 0;
 730 }
 731
 732 int poptBitsAdd(poptBits bits, const char * s)
 733 {
 734     size_t ns = (s ? strlen(s) : 0);
 735     uint32_t h0 = 0;
 736     uint32_t h1 = 0;
 737
 738     if (bits == NULL || ns == 0)
 739         return POPT_ERROR_NULLARG;
 740
 741     poptJlu32lpair(s, ns, &h0, &h1);
 742
 743     for (ns = 0; ns < (size_t)_poptBitsK; ns++) {
 744         uint32_t h = h0 + ns * h1;
 745         uint32_t ix = (h % _poptBitsM);
 746         PBM_SET(ix, bits);
 747     }
 748     return 0;
 749 }
 750
 751 int poptBitsChk(poptBits bits, const char * s)
 752 {
 753     size_t ns = (s ? strlen(s) : 0);
 754     uint32_t h0 = 0;
 755     uint32_t h1 = 0;
 756     int rc = 1;
 757
 758     if (bits == NULL || ns == 0)
 759         return POPT_ERROR_NULLARG;
 760
 761     poptJlu32lpair(s, ns, &h0, &h1);
 762
 763     for (ns = 0; ns < (size_t)_poptBitsK; ns++) {
 764         uint32_t h = h0 + ns * h1;
 765         uint32_t ix = (h % _poptBitsM);
 766         if (PBM_ISSET(ix, bits))
 767             continue;
 768         rc = 0;
 769         break;
 770     }
 771     return rc;
 772 }
 773
 774 int poptBitsClr(poptBits bits)
 775 {
 776     static size_t nbw = (__PBM_NBITS/8);
 777     size_t nw = (__PBM_IX(_poptBitsM-1) + 1);
 778
 779     if (bits == NULL)
 780         return POPT_ERROR_NULLARG;
 781     memset(bits, 0, nw * nbw);
 782     return 0;
 783 }
 784
 785 int poptBitsDel(poptBits bits, const char * s)
 786 {
 787     size_t ns = (s ? strlen(s) : 0);
 788     uint32_t h0 = 0;
 789     uint32_t h1 = 0;
 790
 791     if (bits == NULL || ns == 0)
 792         return POPT_ERROR_NULLARG;
 793
 794     poptJlu32lpair(s, ns, &h0, &h1);
 795
 796     for (ns = 0; ns < (size_t)_poptBitsK; ns++) {
 797         uint32_t h = h0 + ns * h1;
 798         uint32_t ix = (h % _poptBitsM);
 799         PBM_CLR(ix, bits);
 800     }
 801     return 0;
 802 }
 803
 804 int poptBitsIntersect(poptBits *ap, const poptBits b)
 805 {
 806     __pbm_bits *abits;
 807     __pbm_bits *bbits;
 808     __pbm_bits rc = 0;
 809     size_t nw = (__PBM_IX(_poptBitsM-1) + 1);
 810     size_t i;
 811
 812     if (ap == NULL || b == NULL || _poptBitsNew(ap))
 813         return POPT_ERROR_NULLARG;
 814     abits = __PBM_BITS(*ap);
 815     bbits = __PBM_BITS(b);
 816
 817     for (i = 0; i < nw; i++) {
 818         abits[i] &= bbits[i];
 819         rc |= abits[i];
 820     }
 821     return (rc ? 1 : 0);
 822 }
 823
 824 int poptBitsUnion(poptBits *ap, const poptBits b)
 825 {
 826     __pbm_bits *abits;
 827     __pbm_bits *bbits;
 828     __pbm_bits rc = 0;
 829     size_t nw = (__PBM_IX(_poptBitsM-1) + 1);
 830     size_t i;
 831
 832     if (ap == NULL || b == NULL || _poptBitsNew(ap))
 833         return POPT_ERROR_NULLARG;
 834     abits = __PBM_BITS(*ap);
 835     bbits = __PBM_BITS(b);
 836
 837     for (i = 0; i < nw; i++) {
 838         abits[i] |= bbits[i];
 839         rc |= abits[i];
 840     }
 841     return (rc ? 1 : 0);
 842 }
 843
 844 int poptBitsArgs(poptContext con, poptBits *ap)
 845 {
 846     const char ** av;
 847     int rc = 0;
 848
 849     if (con == NULL || ap == NULL || _poptBitsNew(ap) ||
 850         con->leftovers == NULL || con->numLeftovers == con->nextLeftover)
 851         return POPT_ERROR_NULLARG;
 852
 853     /* some apps like [like RPM ;-) ] need this NULL terminated */
 854     con->leftovers[con->numLeftovers] = NULL;
 855
 856     for (av = con->leftovers + con->nextLeftover; *av != NULL; av++) {
 857         if ((rc = poptBitsAdd(*ap, *av)) != 0)
 858             break;
 859     }
 860     return rc;
 861 }
 862
 863 int poptSaveBits(poptBits * bitsp,
 864                 UNUSED(unsigned int argInfo), const char * s)
 865 {
 866     char *tbuf = NULL;
 867     char *t, *te;
 868     int rc = 0;
 869
 870     if (bitsp == NULL || s == NULL || *s == '\0' || _poptBitsNew(bitsp))
 871         return POPT_ERROR_NULLARG;
 872
 873     /* Parse comma separated attributes. */
 874     te = tbuf = xstrdup(s);
 875     while ((t = te) != NULL && *t) {
 876         while (*te != '\0' && *te != ',')
 877             te++;
 878         if (*te != '\0')
 879             *te++ = '\0';
 880         /* XXX Ignore empty strings. */
 881         if (*t == '\0')
 882             continue;
 883         /* XXX Permit negated attributes. caveat emptor: false negatives. */
 884         if (*t == '!') {
 885             t++;
 886             if ((rc = poptBitsChk(*bitsp, t)) > 0)
 887                 rc = poptBitsDel(*bitsp, t);
 888         } else
 889             rc = poptBitsAdd(*bitsp, t);
 890         if (rc)
 891             break;
 892     }
 893     tbuf = _free(tbuf);
 894     return rc;
 895 }
 896
 897 int poptSaveString(const char *** argvp,
 898                 UNUSED(unsigned int argInfo), const char * val)
 899 {
 900     int argc = 0;
 901
 902     if (argvp == NULL || val == NULL)
 903         return POPT_ERROR_NULLARG;
 904
 905     /* XXX likely needs an upper bound on argc. */
 906     if (*argvp != NULL)
 907     while ((*argvp)[argc] != NULL)
 908         argc++;
 909
 910     if ((*argvp = xrealloc(*argvp, (argc + 1 + 1) * sizeof(**argvp))) != NULL) {
 911         (*argvp)[argc++] = xstrdup(val);
 912         (*argvp)[argc  ] = NULL;
 913     }
 914     return 0;
 915 }
 916
 917 static long long poptRandomValue(long long limit)
 918 {
 919 #if defined(HAVE_SRANDOM)
 920     static int seed = 1;
 921
 922     if (seed) {
 923         srandom((unsigned)getpid());
 924         srandom((unsigned)random());
 925         seed = 0;
 926     }
 927
 928     return random() % limit + 1;
 929 #else
 930     /* XXX avoid adding POPT_ERROR_UNIMPLEMENTED to minimize i18n churn. */
 931     return POPT_ERROR_BADOPERATION;
 932 #endif
 933 }
 934
 935 int poptSaveLongLong(long long * arg, unsigned int argInfo, long long aLongLong)
 936 {
 937     /* XXX Check alignment, may fail on funky platforms. */
 938     if (arg == NULL || (((unsigned long)arg) & (ALIGNOF(*arg)-1)))
 939         return POPT_ERROR_NULLARG;
 940
 941     if (aLongLong != 0 && LF_ISSET(RANDOM)) {
 942         aLongLong = poptRandomValue(aLongLong);
 943         if (aLongLong < 0)
 944             return aLongLong;
 945     }
 946     if (LF_ISSET(NOT))
 947         aLongLong = ~aLongLong;
 948     switch (LF_ISSET(LOGICALOPS)) {
 949     case 0:
 950         *arg = aLongLong;
 951         break;
 952     case POPT_ARGFLAG_OR:
 953         *(unsigned long long *)arg |= (unsigned long long)aLongLong;
 954         break;
 955     case POPT_ARGFLAG_AND:
 956         *(unsigned long long *)arg &= (unsigned long long)aLongLong;
 957         break;
 958     case POPT_ARGFLAG_XOR:
 959         *(unsigned long long *)arg ^= (unsigned long long)aLongLong;
 960         break;
 961     default:
 962         return POPT_ERROR_BADOPERATION;
 963         break;
 964     }
 965     return 0;
 966 }
 967
 968 int poptSaveLong(long * arg, unsigned int argInfo, long aLong)
 969 {
 970     /* XXX Check alignment, may fail on funky platforms. */
 971     if (arg == NULL || (((unsigned long)arg) & (ALIGNOF(*arg)-1)))
 972         return POPT_ERROR_NULLARG;
 973
 974     if (aLong != 0 && LF_ISSET(RANDOM)) {
 975         aLong = (long)poptRandomValue(aLong);
 976         if (aLong < 0)
 977             return aLong;
 978     }
 979     if (LF_ISSET(NOT))
 980         aLong = ~aLong;
 981     switch (LF_ISSET(LOGICALOPS)) {
 982     case 0:                *arg = aLong; break;
 983     case POPT_ARGFLAG_OR:  *(unsigned long *)arg |= (unsigned long)aLong; break;
 984     case POPT_ARGFLAG_AND: *(unsigned long *)arg &= (unsigned long)aLong; break;
 985     case POPT_ARGFLAG_XOR: *(unsigned long *)arg ^= (unsigned long)aLong; break;
 986     default:
 987         return POPT_ERROR_BADOPERATION;
 988         break;
 989     }
 990     return 0;
 991 }
 992
 993 int poptSaveInt(int * arg, unsigned int argInfo, long aLong)
 994 {
 995     /* XXX Check alignment, may fail on funky platforms. */
 996     if (arg == NULL || (((unsigned long)arg) & (ALIGNOF(*arg)-1)))
 997         return POPT_ERROR_NULLARG;
 998
 999     if (aLong != 0 && LF_ISSET(RANDOM)) {
1000         aLong = (int)poptRandomValue(aLong);
1001         if (aLong < 0)
1002             return aLong;
1003     }
1004     if (LF_ISSET(NOT))
1005         aLong = ~aLong;
1006     switch (LF_ISSET(LOGICALOPS)) {
1007     case 0:                *arg = (int) aLong;                          break;
1008     case POPT_ARGFLAG_OR:  *(unsigned int *)arg |= (unsigned int) aLong; break;
1009     case POPT_ARGFLAG_AND: *(unsigned int *)arg &= (unsigned int) aLong; break;
1010     case POPT_ARGFLAG_XOR: *(unsigned int *)arg ^= (unsigned int) aLong; break;
1011     default:
1012         return POPT_ERROR_BADOPERATION;
1013         break;
1014     }
1015     return 0;
1016 }
1017
1018 int poptSaveShort(short * arg, unsigned int argInfo, long aLong)
1019 {
1020     /* XXX Check alignment, may fail on funky platforms. */
1021     if (arg == NULL || (((unsigned long)arg) & (ALIGNOF(*arg)-1)))
1022         return POPT_ERROR_NULLARG;
1023
1024     if (aLong != 0 && LF_ISSET(RANDOM)) {
1025         aLong = (short)poptRandomValue(aLong);
1026         if (aLong < 0)
1027             return aLong;
1028     }
1029     if (LF_ISSET(NOT))
1030         aLong = ~aLong;
1031     switch (LF_ISSET(LOGICALOPS)) {
1032     case 0:                *arg = (short) aLong;
1033         break;
1034     case POPT_ARGFLAG_OR:  *(unsigned short *)arg |= (unsigned short) aLong;
1035         break;
1036     case POPT_ARGFLAG_AND: *(unsigned short *)arg &= (unsigned short) aLong;
1037         break;
1038     case POPT_ARGFLAG_XOR: *(unsigned short *)arg ^= (unsigned short) aLong;
1039         break;
1040     default: return POPT_ERROR_BADOPERATION;
1041         break;
1042     }
1043     return 0;
1044 }
1045
1046 /**
1047  * Return argInfo field, handling POPT_ARGFLAG_TOGGLE overrides.
1048  * @param con           context
1049  * @param opt           option
1050  * @return              argInfo
1051  */
1052 static unsigned int poptArgInfo(poptContext con, const struct poptOption * opt)
1053 {
1054     unsigned int argInfo = opt->argInfo;
1055
1056     if (con->os->argv != NULL && con->os->next > 0 && opt->longName != NULL)
1057     if (LF_ISSET(TOGGLE)) {
1058         const char * longName = con->os->argv[con->os->next-1];
1059         while (*longName == '-') longName++;
1060         /* XXX almost good enough but consider --[no]nofoo corner cases. */
1061         if (longName[0] != opt->longName[0] || longName[1] != opt->longName[1])
1062         {
1063             if (!LF_ISSET(XOR)) {       /* XXX dont toggle with XOR */
1064                 /* Toggle POPT_BIT_SET <=> POPT_BIT_CLR. */
1065                 if (LF_ISSET(LOGICALOPS))
1066                     argInfo ^= (POPT_ARGFLAG_OR|POPT_ARGFLAG_AND);
1067                 argInfo ^= POPT_ARGFLAG_NOT;
1068             }
1069         }
1070     }
1071     return argInfo;
1072 }
1073
1074 /**
1075  * Parse an integer expression.
1076  * @retval *llp         integer expression value
1077  * @param argInfo       integer expression type
1078  * @param val           integer expression string
1079  * @return              0 on success, otherwise POPT_* error.
1080  */
1081 static int poptParseInteger(long long * llp,
1082                 UNUSED(unsigned int argInfo),
1083                 const char * val)
1084 {
1085     if (val) {
1086         char *end = NULL;
1087         *llp = strtoll(val, &end, 0);
1088
1089         /* XXX parse scaling suffixes here. */
1090
1091         if (!(end && *end == '\0'))
1092             return POPT_ERROR_BADNUMBER;
1093     } else
1094         *llp = 0;
1095     return 0;
1096 }
1097
1098 /**
1099  * Save the option argument through the (*opt->arg) pointer.
1100  * @param con           context
1101  * @param opt           option
1102  * @return              0 on success, otherwise POPT_* error.
1103  */
1104 static int poptSaveArg(poptContext con, const struct poptOption * opt)
1105 {
1106     poptArg arg = { .ptr = opt->arg };
1107     int rc = 0;         /* assume success */
1108
1109     switch (poptArgType(opt)) {
1110     case POPT_ARG_BITSET:
1111         /* XXX memory leak, application is responsible for free. */
1112         rc = poptSaveBits(arg.ptr, opt->argInfo, con->os->nextArg);
1113         break;
1114     case POPT_ARG_ARGV:
1115         /* XXX memory leak, application is responsible for free. */
1116         rc = poptSaveString(arg.ptr, opt->argInfo, con->os->nextArg);
1117         break;
1118     case POPT_ARG_STRING:
1119         /* XXX memory leak, application is responsible for free. */
1120         arg.argv[0] = (con->os->nextArg) ? xstrdup(con->os->nextArg) : NULL;
1121         break;
1122
1123     case POPT_ARG_INT:
1124     case POPT_ARG_SHORT:
1125     case POPT_ARG_LONG:
1126     case POPT_ARG_LONGLONG:
1127     {   unsigned int argInfo = poptArgInfo(con, opt);
1128         long long aNUM = 0;
1129
1130         if ((rc = poptParseInteger(&aNUM, argInfo, con->os->nextArg)) != 0)
1131             break;
1132
1133         switch (poptArgType(opt)) {
1134         case POPT_ARG_LONGLONG:
1135 /* XXX let's not demand C99 compiler flags for <limits.h> quite yet. */
1136 #if !defined(LLONG_MAX)
1137 #   define LLONG_MAX    9223372036854775807LL
1138 #   define LLONG_MIN    (-LLONG_MAX - 1LL)
1139 #endif
1140             rc = !(aNUM == LLONG_MIN || aNUM == LLONG_MAX)
1141                 ? poptSaveLongLong(arg.longlongp, argInfo, aNUM)
1142                 : POPT_ERROR_OVERFLOW;
1143             break;
1144         case POPT_ARG_LONG:
1145             rc = !(aNUM < (long long)LONG_MIN || aNUM > (long long)LONG_MAX)
1146                 ? poptSaveLong(arg.longp, argInfo, (long)aNUM)
1147                 : POPT_ERROR_OVERFLOW;
1148             break;
1149         case POPT_ARG_INT:
1150             rc = !(aNUM < (long long)INT_MIN || aNUM > (long long)INT_MAX)
1151                 ? poptSaveInt(arg.intp, argInfo, (long)aNUM)
1152                 : POPT_ERROR_OVERFLOW;
1153             break;
1154         case POPT_ARG_SHORT:
1155             rc = !(aNUM < (long long)SHRT_MIN || aNUM > (long long)SHRT_MAX)
1156                 ? poptSaveShort(arg.shortp, argInfo, (long)aNUM)
1157                 : POPT_ERROR_OVERFLOW;
1158             break;
1159         }
1160     }   break;
1161
1162     case POPT_ARG_FLOAT:
1163     case POPT_ARG_DOUBLE:
1164     {   char *end = NULL;
1165         double aDouble = 0.0;
1166
1167         if (con->os->nextArg) {
1168             int saveerrno = errno;
1169             errno = 0;
1170             aDouble = strtod(con->os->nextArg, &end);
1171             if (errno == ERANGE) {
1172                 rc = POPT_ERROR_OVERFLOW;
1173                 break;
1174             }
1175             errno = saveerrno;
1176             if (*end != '\0') {
1177                 rc = POPT_ERROR_BADNUMBER;
1178                 break;
1179             }
1180         }
1181
1182         switch (poptArgType(opt)) {
1183         case POPT_ARG_DOUBLE:
1184             arg.doublep[0] = aDouble;
1185             break;
1186         case POPT_ARG_FLOAT:
1187 #define POPT_ABS(a)     ((((a) - 0.0) < DBL_EPSILON) ? -(a) : (a))
1188             if ((FLT_MIN - POPT_ABS(aDouble)) > DBL_EPSILON
1189              || (POPT_ABS(aDouble) - FLT_MAX) > DBL_EPSILON)
1190                 rc = POPT_ERROR_OVERFLOW;
1191             else
1192                 arg.floatp[0] = (float) aDouble;
1193             break;
1194         }
1195     }   break;
1196     case POPT_ARG_MAINCALL:
1197         con->maincall = opt->arg;
1198         break;
1199     default:
1200         fprintf(stdout, POPT_("option type (%u) not implemented in popt\n"),
1201                 poptArgType(opt));
1202         exit(EXIT_FAILURE);
1203         break;
1204     }
1205     return rc;
1206 }
1207
1208 /* returns 'val' element, -1 on last item, POPT_ERROR_* on error */
1209 int poptGetNextOpt(poptContext con)
1210 {
1211     const struct poptOption * opt = NULL;
1212     int done = 0;
1213
1214     if (con == NULL)
1215         return -1;
1216     while (!done) {
1217         const char * origOptString = NULL;
1218         poptCallbackType cb = NULL;
1219         const void * cbData = NULL;
1220         const char * longArg = NULL;
1221         int canstrip = 0;
1222         int shorty = 0;
1223
1224         while (!con->os->nextCharArg && con->os->next == con->os->argc
1225                 && con->os > con->optionStack) {
1226             cleanOSE(con->os--);
1227         }
1228         if (!con->os->nextCharArg && con->os->next == con->os->argc) {
1229             invokeCallbacksPOST(con, con->options);
1230
1231             if (con->maincall) {
1232                 (void) (*con->maincall) (con->finalArgvCount, con->finalArgv);
1233                 return -1;
1234             }
1235
1236             if (con->doExec) return execCommand(con);
1237             return -1;
1238         }
1239
1240         /* Process next long option */
1241         if (!con->os->nextCharArg) {
1242             const char * optString;
1243             size_t optStringLen;
1244             int thisopt;
1245
1246             if (con->os->argb && PBM_ISSET(con->os->next, con->os->argb)) {
1247                 con->os->next++;
1248                 continue;
1249             }
1250             thisopt = con->os->next;
1251             if (con->os->argv != NULL)  /* XXX can't happen */
1252             origOptString = con->os->argv[con->os->next++];
1253
1254             if (origOptString == NULL)  /* XXX can't happen */
1255                 return POPT_ERROR_BADOPT;
1256
1257             if (con->restLeftover || *origOptString != '-' ||
1258                 (*origOptString == '-' && origOptString[1] == '\0'))
1259             {
1260                 if (con->flags & POPT_CONTEXT_POSIXMEHARDER)
1261                     con->restLeftover = 1;
1262                 if (con->flags & POPT_CONTEXT_ARG_OPTS) {
1263                     con->os->nextArg = xstrdup(origOptString);
1264                     return 0;
1265                 }
1266                 if (con->leftovers != NULL) {   /* XXX can't happen */
1267                     /* One might think we can never overflow the leftovers
1268                        array.  Actually, that's true, as long as you don't
1269                        use poptStuffArgs()... */
1270                     if ((con->numLeftovers + 1) >= (con->allocLeftovers)) {
1271                         con->allocLeftovers += 10;
1272                         con->leftovers =
1273                             realloc(con->leftovers,
1274                                     sizeof(*con->leftovers) * con->allocLeftovers);
1275                     }
1276                     con->leftovers[con->numLeftovers++]
1277                         = xstrdup(origOptString); /* so a free of a stuffed
1278                                                      argv doesn't give us a
1279                                                      dangling pointer */
1280                 }
1281                 continue;
1282             }
1283
1284             /* Make a copy we can hack at */
1285             optString = origOptString;
1286
1287             if (optString[0] == '\0')
1288                 return POPT_ERROR_BADOPT;
1289
1290             if (optString[1] == '-' && !optString[2]) {
1291                 con->restLeftover = 1;
1292                 continue;
1293             } else {
1294                 const char *oe;
1295                 unsigned int argInfo = 0;
1296
1297                 optString++;
1298                 if (*optString == '-')
1299                     optString++;
1300                 else
1301                     argInfo |= POPT_ARGFLAG_ONEDASH;
1302
1303                 /* Check for "--long=arg" option. */
1304                 for (oe = optString; *oe && *oe != '='; oe++)
1305                     {};
1306                 optStringLen = (size_t)(oe - optString);
1307                 if (*oe == '=')
1308                     longArg = oe + 1;
1309
1310                 /* XXX aliases with arg substitution need "--alias=arg" */
1311                 if (handleAlias(con, optString, optStringLen, '\0', longArg)) {
1312                     longArg = NULL;
1313                     continue;
1314                 }
1315
1316                 if (handleExec(con, optString, '\0'))
1317                     continue;
1318
1319                 opt = findOption(con->options, optString, optStringLen, '\0', &cb, &cbData,
1320                                  argInfo);
1321                 if (!opt && !LF_ISSET(ONEDASH))
1322                     return POPT_ERROR_BADOPT;
1323             }
1324
1325             if (!opt) {
1326                 con->os->nextCharArg = origOptString + 1;
1327                 longArg = NULL;
1328             } else {
1329                 if (con->os == con->optionStack && F_ISSET(opt, STRIP))
1330                 {
1331                     canstrip = 1;
1332                     poptStripArg(con, thisopt);
1333                 }
1334                 shorty = 0;
1335             }
1336         }
1337
1338         /* Process next short option */
1339         if (con->os->nextCharArg) {
1340             const char * nextCharArg = con->os->nextCharArg;
1341
1342             con->os->nextCharArg = NULL;
1343
1344             if (handleAlias(con, NULL, 0, *nextCharArg, nextCharArg + 1))
1345                 continue;
1346
1347             if (handleExec(con, NULL, *nextCharArg)) {
1348                 /* Restore rest of short options for further processing */
1349                 nextCharArg++;
1350                 if (*nextCharArg != '\0')
1351                     con->os->nextCharArg = nextCharArg;
1352                 continue;
1353             }
1354
1355             opt = findOption(con->options, NULL, 0, *nextCharArg, &cb,
1356                              &cbData, 0);
1357             if (!opt)
1358                 return POPT_ERROR_BADOPT;
1359             shorty = 1;
1360
1361             nextCharArg++;
1362             if (*nextCharArg != '\0')
1363                 con->os->nextCharArg = nextCharArg;
1364         }
1365
1366         if (opt == NULL) return POPT_ERROR_BADOPT;      /* XXX can't happen */
1367         if (poptArgType(opt) == POPT_ARG_NONE || poptArgType(opt) == POPT_ARG_VAL) {
1368             if (longArg || (con->os->nextCharArg && con->os->nextCharArg[0] == '='))
1369                 return POPT_ERROR_UNWANTEDARG;
1370             if (opt->arg) {
1371                 long val = poptArgType(opt) == POPT_ARG_VAL ? opt->val : 1;
1372                 unsigned int argInfo = poptArgInfo(con, opt);
1373                 if (poptSaveInt((int *)opt->arg, argInfo, val))
1374                     return POPT_ERROR_BADOPERATION;
1375             }
1376         } else {
1377             int rc;
1378
1379             con->os->nextArg = _free(con->os->nextArg);
1380             if (longArg) {
1381                 longArg = expandNextArg(con, longArg);
1382                 con->os->nextArg = (char *) longArg;
1383             } else if (con->os->nextCharArg) {
1384                 longArg = expandNextArg(con, con->os->nextCharArg + (int)(*con->os->nextCharArg == '='));
1385                 con->os->nextArg = (char *) longArg;
1386                 con->os->nextCharArg = NULL;
1387             } else {
1388                 while (con->os->next == con->os->argc &&
1389                         con->os > con->optionStack)
1390                 {
1391                     cleanOSE(con->os--);
1392                 }
1393                 if (con->os->next == con->os->argc) {
1394                     if (!F_ISSET(opt, OPTIONAL))
1395                         return POPT_ERROR_NOARG;
1396                     con->os->nextArg = NULL;
1397                 } else {
1398
1399                     /*
1400                      * Make sure this isn't part of a short arg or the
1401                      * result of an alias expansion.
1402                      */
1403                     if (con->os == con->optionStack
1404                      && F_ISSET(opt, STRIP) && canstrip)
1405                     {
1406                         poptStripArg(con, con->os->next);
1407                     }
1408
1409                     if (con->os->argv != NULL) {        /* XXX can't happen */
1410                         if (F_ISSET(opt, OPTIONAL) &&
1411                             con->os->argv[con->os->next][0] == '-') {
1412                             con->os->nextArg = NULL;
1413                         } else {
1414                             /* XXX watchout: subtle side-effects live here. */
1415                             longArg = con->os->argv[con->os->next++];
1416                             longArg = expandNextArg(con, longArg);
1417                             con->os->nextArg = (char *) longArg;
1418                         }
1419                     }
1420                 }
1421             }
1422             longArg = NULL;
1423
1424            /* Save the option argument through a (*opt->arg) pointer. */
1425             if (opt->arg != NULL && (rc = poptSaveArg(con, opt)) != 0)
1426                 return rc;
1427         }
1428
1429         if (cb)
1430             invokeCallbacksOPTION(con, con->options, opt, cbData, shorty);
1431         else if (opt->val && (poptArgType(opt) != POPT_ARG_VAL))
1432             done = 1;
1433
1434         if ((con->finalArgvCount + 2) >= (con->finalArgvAlloced)) {
1435             con->finalArgvAlloced += 10;
1436             con->finalArgv = realloc(con->finalArgv,
1437                             sizeof(*con->finalArgv) * con->finalArgvAlloced);
1438         }
1439
1440         if (con->finalArgv != NULL)
1441         {   char *s = malloc((opt->longName ? strlen(opt->longName) : 0) + sizeof("--"));
1442             if (s != NULL) {    /* XXX can't happen */
1443                 con->finalArgv[con->finalArgvCount++] = s;
1444                 *s++ = '-';
1445                 if (opt->longName) {
1446                     if (!F_ISSET(opt, ONEDASH))
1447                         *s++ = '-';
1448                     s = stpcpy(s, opt->longName);
1449                 } else {
1450                     *s++ = opt->shortName;
1451                     *s = '\0';
1452                 }
1453             } else
1454                 con->finalArgv[con->finalArgvCount++] = NULL;
1455         }
1456
1457         if (opt->arg && poptArgType(opt) == POPT_ARG_NONE)
1458             ;
1459         else if (poptArgType(opt) == POPT_ARG_VAL)
1460             ;
1461         else if (poptArgType(opt) != POPT_ARG_NONE) {
1462             if (con->finalArgv != NULL && con->os->nextArg != NULL)
1463                 con->finalArgv[con->finalArgvCount++] =
1464                         xstrdup(con->os->nextArg);
1465         }
1466     }
1467
1468     return (opt ? opt->val : -1);       /* XXX can't happen */
1469 }
1470
1471 char * poptGetOptArg(poptContext con)
1472 {
1473     char * ret = NULL;
1474     if (con) {
1475         ret = con->os->nextArg;
1476         con->os->nextArg = NULL;
1477     }
1478     return ret;
1479 }
1480
1481 const char * poptGetArg(poptContext con)
1482 {
1483     const char * ret = NULL;
1484     if (con && con->leftovers != NULL && con->nextLeftover < con->numLeftovers)
1485         ret = con->leftovers[con->nextLeftover++];
1486     return ret;
1487 }
1488
1489 const char * poptPeekArg(poptContext con)
1490 {
1491     const char * ret = NULL;
1492     if (con && con->leftovers != NULL && con->nextLeftover < con->numLeftovers)
1493         ret = con->leftovers[con->nextLeftover];
1494     return ret;
1495 }
1496
1497 const char ** poptGetArgs(poptContext con)
1498 {
1499     if (con == NULL ||
1500         con->leftovers == NULL || con->numLeftovers == con->nextLeftover)
1501         return NULL;
1502
1503     /* some apps like [like RPM ;-) ] need this NULL terminated */
1504     con->leftovers[con->numLeftovers] = NULL;
1505
1506     return (con->leftovers + con->nextLeftover);
1507 }
1508
1509 static
1510 poptItem poptFreeItems(poptItem items, int nitems)
1511 {
1512     if (items != NULL) {
1513         poptItem item = items;
1514         while (--nitems >= 0) {
1515             item->option.longName = _free(item->option.longName);
1516             item->option.descrip = _free(item->option.descrip);
1517             item->option.argDescrip = _free(item->option.argDescrip);
1518             item->argv = _free(item->argv);
1519             item++;
1520         }
1521         _free(items);
1522     }
1523     return NULL;
1524 }
1525
1526 poptContext poptFreeContext(poptContext con)
1527 {
1528     int i;
1529
1530     if (con == NULL) return con;
1531     poptResetContext(con);
1532
1533     con->aliases = poptFreeItems(con->aliases, con->numAliases);
1534     con->numAliases = 0;
1535
1536     con->execs = poptFreeItems(con->execs, con->numExecs);
1537     con->numExecs = 0;
1538
1539     for (i = 0; i < con->numLeftovers; i++) {
1540         con->leftovers[i] = _free(con->leftovers[i]);
1541     }
1542     con->leftovers = _free(con->leftovers);
1543
1544     con->finalArgv = _free(con->finalArgv);
1545     con->appName = _free(con->appName);
1546     con->otherHelp = _free(con->otherHelp);
1547     con->execPath = _free(con->execPath);
1548     con->arg_strip = PBM_FREE(con->arg_strip);
1549
1550     con = _free(con);
1551     return con;
1552 }
1553
1554 int poptAddAlias(poptContext con, struct poptAlias alias,
1555                 UNUSED(int flags))
1556 {
1557     struct poptItem_s item_buf;
1558     poptItem item = &item_buf;
1559     memset(item, 0, sizeof(*item));
1560     item->option.longName = alias.longName;
1561     item->option.shortName = alias.shortName;
1562     item->option.argInfo = POPT_ARGFLAG_DOC_HIDDEN;
1563     item->option.arg = 0;
1564     item->option.val = 0;
1565     item->option.descrip = NULL;
1566     item->option.argDescrip = NULL;
1567     item->argc = alias.argc;
1568     item->argv = alias.argv;
1569     return poptAddItem(con, item, 0);
1570 }
1571
1572 int poptAddItem(poptContext con, poptItem newItem, int flags)
1573 {
1574     poptItem * items, item_tmp, item;
1575     int * nitems;
1576
1577     switch (flags) {
1578     case 1:
1579         items = &con->execs;
1580         nitems = &con->numExecs;
1581         break;
1582     case 0:
1583         items = &con->aliases;
1584         nitems = &con->numAliases;
1585         break;
1586     default:
1587         return 1;
1588         break;
1589     }
1590
1591     item_tmp = realloc((*items), ((*nitems) + 1) * sizeof(**items));
1592     if (item_tmp == NULL)
1593         return 1;
1594     *items = item_tmp;
1595
1596     item = (*items) + (*nitems);
1597
1598     item->option.longName =
1599         (newItem->option.longName ? xstrdup(newItem->option.longName) : NULL);
1600     item->option.shortName = newItem->option.shortName;
1601     item->option.argInfo = newItem->option.argInfo;
1602     item->option.arg = newItem->option.arg;
1603     item->option.val = newItem->option.val;
1604     item->option.descrip =
1605         (newItem->option.descrip ? xstrdup(newItem->option.descrip) : NULL);
1606     item->option.argDescrip =
1607        (newItem->option.argDescrip ? xstrdup(newItem->option.argDescrip) : NULL);
1608     item->argc = newItem->argc;
1609     item->argv = newItem->argv;
1610
1611     (*nitems)++;
1612
1613     return 0;
1614 }
1615
1616 const char * poptBadOption(poptContext con, unsigned int flags)
1617 {
1618     struct optionStackEntry * os = NULL;
1619     const char *badOpt = NULL;
1620
1621     if (con != NULL) {
1622        /* Stupid hack to return something semi-meaningful from exec failure */
1623        if (con->execFail) {
1624            badOpt = con->execFail;
1625        } else {
1626            os = (flags & POPT_BADOPTION_NOALIAS) ? con->optionStack : con->os;
1627            badOpt = os->argv[os->next - 1];
1628        }
1629     }
1630
1631     return badOpt;
1632 }
1633
1634 const char * poptStrerror(const int error)
1635 {
1636     switch (error) {
1637       case POPT_ERROR_NOARG:
1638         return POPT_("missing argument");
1639       case POPT_ERROR_UNWANTEDARG:
1640         return POPT_("option does not take an argument");
1641       case POPT_ERROR_BADOPT:
1642         return POPT_("unknown option");
1643       case POPT_ERROR_BADOPERATION:
1644         return POPT_("mutually exclusive logical operations requested");
1645       case POPT_ERROR_NULLARG:
1646         return POPT_("opt->arg should not be NULL");
1647       case POPT_ERROR_OPTSTOODEEP:
1648         return POPT_("aliases nested too deeply");
1649       case POPT_ERROR_BADQUOTE:
1650         return POPT_("error in parameter quoting");
1651       case POPT_ERROR_BADNUMBER:
1652         return POPT_("invalid numeric value");
1653       case POPT_ERROR_OVERFLOW:
1654         return POPT_("number too large or too small");
1655       case POPT_ERROR_MALLOC:
1656         return POPT_("memory allocation failed");
1657       case POPT_ERROR_BADCONFIG:
1658         return POPT_("config file failed sanity test");
1659       case POPT_ERROR_ERRNO:
1660         return strerror(errno);
1661       default:
1662         return POPT_("unknown error");
1663     }
1664 }
1665
1666 int poptStuffArgs(poptContext con, const char ** argv)
1667 {
1668     int argc;
1669     int rc;
1670
1671     if ((con->os - con->optionStack) == POPT_OPTION_DEPTH)
1672         return POPT_ERROR_OPTSTOODEEP;
1673
1674     for (argc = 0; argv[argc]; argc++)
1675         {};
1676
1677     con->os++;
1678     con->os->next = 0;
1679     con->os->nextArg = NULL;
1680     con->os->nextCharArg = NULL;
1681     con->os->currAlias = NULL;
1682     rc = poptDupArgv(argc, argv, &con->os->argc, &con->os->argv);
1683     con->os->argb = NULL;
1684     con->os->stuffed = 1;
1685
1686     return rc;
1687 }
1688
1689 const char * poptGetInvocationName(poptContext con)
1690 {
1691     return (con->os->argv ? con->os->argv[0] : "");
1692 }
1693
1694 int poptStrippedArgv(poptContext con, int argc, char ** argv)
1695 {
1696     int numargs = argc;
1697     int j = 1;
1698     int i;
1699
1700     if (con->arg_strip)
1701     for (i = 1; i < argc; i++) {
1702         if (PBM_ISSET(i, con->arg_strip))
1703             numargs--;
1704     }
1705
1706     for (i = 1; i < argc; i++) {
1707         if (con->arg_strip && PBM_ISSET(i, con->arg_strip))
1708             continue;
1709         argv[j] = (j < numargs) ? argv[i] : NULL;
1710         j++;
1711     }
1712
1713     return numargs;
1714 }