popt/popt.c

   1 /** \ingroup popt
   2  * \file popt/popt.c
   3  */
   4
   5 /* (C) 19982000 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 #if HAVE_FLOAT_H
  14 #include <float.h>
  15 #endif
  16 #include <math.h>
  17
  18 #include "findme.h"
  19 #include "poptint.h"
  20
  21 #ifndef HAVE_STRERROR
  22 static char * strerror(int errno) {
  23     extern int sys_nerr;
  24     extern char * sys_errlist[];
  25
  26     if ((0 <= errno) && (errno < sys_nerr))
  27         return sys_errlist[errno];
  28     else
  29         return POPT_("unknown errno");
  30 }
  31 #endif
  32
  33 #ifdef MYDEBUG
  34 /*@unused@*/ static void prtcon(const char *msg, poptContext con)
  35 {
  36     if (msg) fprintf(stderr, "%s", msg);
  37     fprintf(stderr, "\tcon %p os %p nextCharArg \"%s\" nextArg \"%s\" argv[%d] \"%s\"\n",
  38         con, con->os,
  39         (con->os->nextCharArg ? con->os->nextCharArg : ""),
  40         (con->os->nextArg ? con->os->nextArg : ""),
  41         con->os->next,
  42         (con->os->argv && con->os->argv[con->os->next]
  43                 ? con->os->argv[con->os->next] : ""));
  44 }
  45 #endif
  46
  47 void poptSetExecPath(poptContext con, const char * path, int allowAbsolute)
  48 {
  49     con->execPath = _free(con->execPath);
  50     con->execPath = xstrdup(path);
  51     con->execAbsolute = allowAbsolute;
  52     /*@-nullstate@*/ /* LCL: con->execPath can be NULL? */
  53     return;
  54     /*@=nullstate@*/
  55 }
  56
  57 static void invokeCallbacksPRE(poptContext con, const struct poptOption * opt)
  58         /*@globals internalState@*/
  59         /*@modifies internalState@*/
  60 {
  61     if (opt != NULL)
  62     for (; opt->longName || opt->shortName || opt->arg; opt++) {
  63         if (opt->arg == NULL) continue;         /* XXX program error. */
  64         if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_INCLUDE_TABLE) {
  65             /* Recurse on included sub-tables. */
  66             invokeCallbacksPRE(con, opt->arg);
  67         } else if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_CALLBACK &&
  68                    (opt->argInfo & POPT_CBFLAG_PRE))
  69         {   /*@-castfcnptr@*/
  70             poptCallbackType cb = (poptCallbackType)opt->arg;
  71             /*@=castfcnptr@*/
  72             /* Perform callback. */
  73             /*@-moduncon -noeffectuncon @*/
  74             cb(con, POPT_CALLBACK_REASON_PRE, NULL, NULL, opt->descrip);
  75             /*@=moduncon =noeffectuncon @*/
  76         }
  77     }
  78 }
  79
  80 static void invokeCallbacksPOST(poptContext con, const struct poptOption * opt)
  81         /*@globals internalState@*/
  82         /*@modifies internalState@*/
  83 {
  84     if (opt != NULL)
  85     for (; opt->longName || opt->shortName || opt->arg; opt++) {
  86         if (opt->arg == NULL) continue;         /* XXX program error. */
  87         if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_INCLUDE_TABLE) {
  88             /* Recurse on included sub-tables. */
  89             invokeCallbacksPOST(con, opt->arg);
  90         } else if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_CALLBACK &&
  91                    (opt->argInfo & POPT_CBFLAG_POST))
  92         {   /*@-castfcnptr@*/
  93             poptCallbackType cb = (poptCallbackType)opt->arg;
  94             /*@=castfcnptr@*/
  95             /* Perform callback. */
  96             /*@-moduncon -noeffectuncon @*/
  97             cb(con, POPT_CALLBACK_REASON_POST, NULL, NULL, opt->descrip);
  98             /*@=moduncon =noeffectuncon @*/
  99         }
 100     }
 101 }
 102
 103 static void invokeCallbacksOPTION(poptContext con,
 104                                   const struct poptOption * opt,
 105                                   const struct poptOption * myOpt,
 106                                   /*@null@*/ const void * myData, int shorty)
 107         /*@globals internalState@*/
 108         /*@modifies internalState@*/
 109 {
 110     const struct poptOption * cbopt = NULL;
 111
 112     if (opt != NULL)
 113     for (; opt->longName || opt->shortName || opt->arg; opt++) {
 114         if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_INCLUDE_TABLE) {
 115             /* Recurse on included sub-tables. */
 116             if (opt->arg != NULL)       /* XXX program error */
 117                 invokeCallbacksOPTION(con, opt->arg, myOpt, myData, shorty);
 118         } else if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_CALLBACK &&
 119                   !(opt->argInfo & POPT_CBFLAG_SKIPOPTION)) {
 120             /* Save callback info. */
 121             cbopt = opt;
 122         } else if (cbopt != NULL &&
 123                    ((myOpt->shortName && opt->shortName && shorty &&
 124                         myOpt->shortName == opt->shortName) ||
 125                     (myOpt->longName && opt->longName &&
 126                 /*@-nullpass@*/         /* LCL: opt->longName != NULL */
 127                         !strcmp(myOpt->longName, opt->longName)))
 128                 /*@=nullpass@*/
 129                    )
 130         {   /*@-castfcnptr@*/
 131             poptCallbackType cb = (poptCallbackType)cbopt->arg;
 132             /*@=castfcnptr@*/
 133             const void * cbData = (cbopt->descrip ? cbopt->descrip : myData);
 134             /* Perform callback. */
 135             if (cb != NULL) {   /* XXX program error */
 136                 /*@-moduncon -noeffectuncon @*/
 137                 cb(con, POPT_CALLBACK_REASON_OPTION, myOpt,
 138                         con->os->nextArg, cbData);
 139                 /*@=moduncon =noeffectuncon @*/
 140             }
 141             /* Terminate (unless explcitly continuing). */
 142             if (!(cbopt->argInfo & POPT_CBFLAG_CONTINUE))
 143                 return;
 144         }
 145     }
 146 }
 147
 148 poptContext poptGetContext(const char * name, int argc, const char ** argv,
 149                            const struct poptOption * options, int flags)
 150 {
 151     poptContext con = malloc(sizeof(*con));
 152
 153     if (con == NULL) return NULL;       /* XXX can't happen */
 154     memset(con, 0, sizeof(*con));
 155
 156     con->os = con->optionStack;
 157     con->os->argc = argc;
 158     /*@-dependenttrans -assignexpose@*/ /* FIX: W2DO? */
 159     con->os->argv = argv;
 160     /*@=dependenttrans =assignexpose@*/
 161     con->os->argb = NULL;
 162
 163     if (!(flags & POPT_CONTEXT_KEEP_FIRST))
 164         con->os->next = 1;                      /* skip argv[0] */
 165
 166     con->leftovers = calloc( (argc + 1), sizeof(*con->leftovers) );
 167     /*@-dependenttrans -assignexpose@*/ /* FIX: W2DO? */
 168     con->options = options;
 169     /*@=dependenttrans =assignexpose@*/
 170     con->aliases = NULL;
 171     con->numAliases = 0;
 172     con->flags = flags;
 173     con->execs = NULL;
 174     con->numExecs = 0;
 175     con->finalArgvAlloced = argc * 2;
 176     con->finalArgv = calloc( con->finalArgvAlloced, sizeof(*con->finalArgv) );
 177     con->execAbsolute = 1;
 178     con->arg_strip = NULL;
 179
 180     if (getenv("POSIXLY_CORRECT") || getenv("POSIX_ME_HARDER"))
 181         con->flags |= POPT_CONTEXT_POSIXMEHARDER;
 182
 183     if (name) {
 184         char * t = malloc(strlen(name) + 1);
 185         if (t) con->appName = strcpy(t, name);
 186     }
 187
 188     /*@-internalglobs@*/
 189     invokeCallbacksPRE(con, con->options);
 190     /*@=internalglobs@*/
 191
 192     return con;
 193 }
 194
 195 static void cleanOSE(/*@special@*/ struct optionStackEntry *os)
 196         /*@uses os @*/
 197         /*@releases os->nextArg, os->argv, os->argb @*/
 198         /*@modifies os @*/
 199 {
 200     os->nextArg = _free(os->nextArg);
 201     os->argv = _free(os->argv);
 202     os->argb = PBM_FREE(os->argb);
 203 }
 204
 205 void poptResetContext(poptContext con)
 206 {
 207     int i;
 208
 209     if (con == NULL) return;
 210     while (con->os > con->optionStack) {
 211         cleanOSE(con->os--);
 212     }
 213     con->os->argb = PBM_FREE(con->os->argb);
 214     con->os->currAlias = NULL;
 215     con->os->nextCharArg = NULL;
 216     con->os->nextArg = NULL;
 217     con->os->next = 1;                  /* skip argv[0] */
 218
 219     con->numLeftovers = 0;
 220     con->nextLeftover = 0;
 221     con->restLeftover = 0;
 222     con->doExec = NULL;
 223
 224     if (con->finalArgv != NULL)
 225     for (i = 0; i < con->finalArgvCount; i++)
 226         /*@-unqualifiedtrans@*/         /* FIX: typedef double indirection. */
 227         con->finalArgv[i] = _free(con->finalArgv[i]);
 228         /*@=unqualifiedtrans@*/
 229
 230     con->finalArgvCount = 0;
 231     con->arg_strip = PBM_FREE(con->arg_strip);
 232     /*@-nullstate@*/    /* FIX: con->finalArgv != NULL */
 233     return;
 234     /*@=nullstate@*/
 235 }
 236
 237 /* Only one of longName, shortName should be set, not both. */
 238 static int handleExec(/*@special@*/ poptContext con,
 239                 /*@null@*/ const char * longName, char shortName)
 240         /*@uses con->execs, con->numExecs, con->flags, con->doExec,
 241                 con->finalArgv, con->finalArgvAlloced, con->finalArgvCount @*/
 242         /*@modifies con @*/
 243 {
 244     poptItem item;
 245     int i;
 246
 247     if (con->execs == NULL || con->numExecs <= 0) /* XXX can't happen */
 248         return 0;
 249
 250     for (i = con->numExecs - 1; i >= 0; i--) {
 251         item = con->execs + i;
 252         if (longName && !(item->option.longName &&
 253                         !strcmp(longName, item->option.longName)))
 254             continue;
 255         else if (shortName != item->option.shortName)
 256             continue;
 257         break;
 258     }
 259     if (i < 0) return 0;
 260
 261
 262     if (con->flags & POPT_CONTEXT_NO_EXEC)
 263         return 1;
 264
 265     if (con->doExec == NULL) {
 266         con->doExec = con->execs + i;
 267         return 1;
 268     }
 269
 270     /* We already have an exec to do; remember this option for next
 271        time 'round */
 272     if ((con->finalArgvCount + 1) >= (con->finalArgvAlloced)) {
 273         con->finalArgvAlloced += 10;
 274         con->finalArgv = realloc(con->finalArgv,
 275                         sizeof(*con->finalArgv) * con->finalArgvAlloced);
 276     }
 277
 278     i = con->finalArgvCount++;
 279     if (con->finalArgv != NULL) /* XXX can't happen */
 280     {   char *s  = malloc((longName ? strlen(longName) : 0) + 3);
 281         if (s != NULL) {        /* XXX can't happen */
 282             if (longName)
 283                 sprintf(s, "--%s", longName);
 284             else
 285                 sprintf(s, "-%c", shortName);
 286             con->finalArgv[i] = s;
 287         } else
 288             con->finalArgv[i] = NULL;
 289     }
 290
 291     /*@-nullstate@*/    /* FIX: con->finalArgv[] == NULL */
 292     return 1;
 293     /*@=nullstate@*/
 294 }
 295
 296 /* Only one of longName, shortName may be set at a time */
 297 static int handleAlias(/*@special@*/ poptContext con,
 298                 /*@null@*/ const char * longName, char shortName,
 299                 /*@keep@*/ /*@null@*/ const char * nextCharArg)
 300         /*@uses con->aliases, con->numAliases, con->optionStack, con->os,
 301                 con->os->currAlias, con->os->currAlias->option.longName @*/
 302         /*@modifies con @*/
 303 {
 304     poptItem item = con->os->currAlias;
 305     int rc;
 306     int i;
 307
 308     if (item) {
 309         if (longName && (item->option.longName &&
 310                 !strcmp(longName, item->option.longName)))
 311             return 0;
 312         if (shortName && shortName == item->option.shortName)
 313             return 0;
 314     }
 315
 316     if (con->aliases == NULL || con->numAliases <= 0) /* XXX can't happen */
 317         return 0;
 318
 319     for (i = con->numAliases - 1; i >= 0; i--) {
 320         item = con->aliases + i;
 321         if (longName && !(item->option.longName &&
 322                         !strcmp(longName, item->option.longName)))
 323             continue;
 324         else if (shortName != item->option.shortName)
 325             continue;
 326         break;
 327     }
 328     if (i < 0) return 0;
 329
 330     if ((con->os - con->optionStack + 1) == POPT_OPTION_DEPTH)
 331         return POPT_ERROR_OPTSTOODEEP;
 332
 333     if (nextCharArg && *nextCharArg)
 334         con->os->nextCharArg = nextCharArg;
 335
 336     con->os++;
 337     con->os->next = 0;
 338     con->os->stuffed = 0;
 339     con->os->nextArg = NULL;
 340     con->os->nextCharArg = NULL;
 341     con->os->currAlias = con->aliases + i;
 342     rc = poptDupArgv(con->os->currAlias->argc, con->os->currAlias->argv,
 343                 &con->os->argc, &con->os->argv);
 344     con->os->argb = NULL;
 345
 346     return (rc ? rc : 1);
 347 }
 348
 349 static int execCommand(poptContext con)
 350     /*@*/
 351 {
 352     poptItem item = con->doExec;
 353     const char ** argv;
 354     int argc = 0;
 355     int rc;
 356
 357     if (item == NULL) /*XXX can't happen*/
 358         return POPT_ERROR_NOARG;
 359
 360     if (item->argv == NULL || item->argc < 1 ||
 361         (!con->execAbsolute && strchr(item->argv[0], '/')))
 362             return POPT_ERROR_NOARG;
 363
 364     argv = malloc(sizeof(*argv) *
 365                         (6 + item->argc + con->numLeftovers + con->finalArgvCount));
 366     if (argv == NULL) return POPT_ERROR_MALLOC; /* XXX can't happen */
 367
 368     if (!strchr(item->argv[0], '/') && con->execPath) {
 369         char *s = alloca(strlen(con->execPath) + strlen(item->argv[0]) + sizeof("/"));
 370         sprintf(s, "%s/%s", con->execPath, item->argv[0]);
 371         argv[argc] = s;
 372     } else {
 373         argv[argc] = findProgramPath(item->argv[0]);
 374     }
 375     if (argv[argc++] == NULL) return POPT_ERROR_NOARG;
 376
 377     if (item->argc > 1) {
 378         memcpy(argv + argc, item->argv + 1, sizeof(*argv) * (item->argc - 1));
 379         argc += (item->argc - 1);
 380     }
 381
 382     if (con->finalArgv != NULL && con->finalArgvCount > 0) {
 383         memcpy(argv + argc, con->finalArgv,
 384                 sizeof(*argv) * con->finalArgvCount);
 385         argc += con->finalArgvCount;
 386     }
 387
 388     if (con->leftovers != NULL && con->numLeftovers > 0) {
 389 #if 0
 390         argv[argc++] = "--";
 391 #endif
 392         memcpy(argv + argc, con->leftovers, sizeof(*argv) * con->numLeftovers);
 393         argc += con->numLeftovers;
 394     }
 395
 396     argv[argc] = NULL;
 397
 398 #ifdef __hpux
 399     rc = setresuid(getuid(), getuid(),-1);
 400     if (rc) return POPT_ERROR_ERRNO;
 401 #else
 402 /*
 403  * XXX " ... on BSD systems setuid() should be preferred over setreuid()"
 404  * XXX  sez' Timur Bakeyev <mc@bat.ru>
 405  * XXX  from Norbert Warmuth <nwarmuth@privat.circular.de>
 406  */
 407 #if defined(HAVE_SETUID)
 408     rc = setuid(getuid());
 409     if (rc) return POPT_ERROR_ERRNO;
 410 #elif defined (HAVE_SETREUID)
 411     rc = setreuid(getuid(), getuid()); /*hlauer: not portable to hpux9.01 */
 412     if (rc) return POPT_ERROR_ERRNO;
 413 #else
 414     ; /* Can't drop privileges */
 415 #endif
 416 #endif
 417
 418     if (argv[0] == NULL)
 419         return POPT_ERROR_NOARG;
 420 #ifdef MYDEBUG
 421     {   const char ** avp;
 422         fprintf(stderr, "==> execvp(%s) argv[%d]:", argv[0], argc);
 423         for (avp = argv; *avp; avp++)
 424             fprintf(stderr, " '%s'", *avp);
 425         fprintf(stderr, "\n");
 426     }
 427 #endif
 428
 429     rc = execvp(argv[0], (char *const *)argv);
 430     return POPT_ERROR_ERRNO;
 431 }
 432
 433 /*@observer@*/ /*@null@*/ static const struct poptOption *
 434 findOption(const struct poptOption * opt, /*@null@*/ const char * longName,
 435                 char shortName,
 436                 /*@null@*/ /*@out@*/ poptCallbackType * callback,
 437                 /*@null@*/ /*@out@*/ const void ** callbackData,
 438                 int singleDash)
 439         /*@modifies *callback, *callbackData */
 440 {
 441     const struct poptOption * cb = NULL;
 442
 443     /* This happens when a single - is given */
 444     if (singleDash && !shortName && (longName && *longName == '\0'))
 445         shortName = '-';
 446
 447     for (; opt->longName || opt->shortName || opt->arg; opt++) {
 448
 449         if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_INCLUDE_TABLE) {
 450             const struct poptOption * opt2;
 451
 452             /* Recurse on included sub-tables. */
 453             if (opt->arg == NULL) continue;     /* XXX program error */
 454             opt2 = findOption(opt->arg, longName, shortName, callback,
 455                               callbackData, singleDash);
 456             if (opt2 == NULL) continue;
 457             /* Sub-table data will be inheirited if no data yet. */
 458             if (!(callback && *callback)) return opt2;
 459             if (!(callbackData && *callbackData == NULL)) return opt2;
 460             /*@-observertrans -dependenttrans @*/
 461             *callbackData = opt->descrip;
 462             /*@=observertrans =dependenttrans @*/
 463             return opt2;
 464         } else if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_CALLBACK) {
 465             cb = opt;
 466         } else if (longName && opt->longName &&
 467                    (!singleDash || (opt->argInfo & POPT_ARGFLAG_ONEDASH)) &&
 468                 /*@-nullpass@*/         /* LCL: opt->longName != NULL */
 469                    !strcmp(longName, opt->longName))
 470                 /*@=nullpass@*/
 471         {
 472             break;
 473         } else if (shortName && shortName == opt->shortName) {
 474             break;
 475         }
 476     }
 477
 478     if (!opt->longName && !opt->shortName)
 479         return NULL;
 480     /*@-modobserver -mods @*/
 481     if (callback) *callback = NULL;
 482     if (callbackData) *callbackData = NULL;
 483     if (cb) {
 484         if (callback)
 485         /*@-castfcnptr@*/
 486             *callback = (poptCallbackType)cb->arg;
 487         /*@=castfcnptr@*/
 488         if (!(cb->argInfo & POPT_CBFLAG_INC_DATA)) {
 489             if (callbackData)
 490                 /*@-observertrans@*/    /* FIX: typedef double indirection. */
 491                 *callbackData = cb->descrip;
 492                 /*@=observertrans@*/
 493         }
 494     }
 495     /*@=modobserver =mods @*/
 496
 497     return opt;
 498 }
 499
 500 static const char * findNextArg(/*@special@*/ poptContext con,
 501                 unsigned argx, int delete_arg)
 502         /*@uses con->optionStack, con->os,
 503                 con->os->next, con->os->argb, con->os->argc, con->os->argv @*/
 504         /*@modifies con @*/
 505 {
 506     struct optionStackEntry * os = con->os;
 507     const char * arg;
 508
 509     do {
 510         int i;
 511         arg = NULL;
 512         while (os->next == os->argc && os > con->optionStack) os--;
 513         if (os->next == os->argc && os == con->optionStack) break;
 514         if (os->argv != NULL)
 515         for (i = os->next; i < os->argc; i++) {
 516             /*@-sizeoftype@*/
 517             if (os->argb && PBM_ISSET(i, os->argb))
 518                 /*@innercontinue@*/ continue;
 519             if (*os->argv[i] == '-')
 520                 /*@innercontinue@*/ continue;
 521             if (--argx > 0)
 522                 /*@innercontinue@*/ continue;
 523             arg = os->argv[i];
 524             if (delete_arg) {
 525                 if (os->argb == NULL) os->argb = PBM_ALLOC(os->argc);
 526                 if (os->argb != NULL)   /* XXX can't happen */
 527                 PBM_SET(i, os->argb);
 528             }
 529             /*@innerbreak@*/ break;
 530             /*@=sizeoftype@*/
 531         }
 532         if (os > con->optionStack) os--;
 533     } while (arg == NULL);
 534     return arg;
 535 }
 536
 537 static /*@only@*/ /*@null@*/ const char *
 538 expandNextArg(/*@special@*/ poptContext con, const char * s)
 539         /*@uses con->optionStack, con->os,
 540                 con->os->next, con->os->argb, con->os->argc, con->os->argv @*/
 541         /*@modifies con @*/
 542 {
 543     const char * a = NULL;
 544     size_t alen;
 545     char *t, *te;
 546     size_t tn = strlen(s) + 1;
 547     char c;
 548
 549     te = t = malloc(tn);;
 550     if (t == NULL) return NULL;         /* XXX can't happen */
 551     while ((c = *s++) != '\0') {
 552         switch (c) {
 553 #if 0   /* XXX can't do this */
 554         case '\\':      /* escape */
 555             c = *s++;
 556             /*@switchbreak@*/ break;
 557 #endif
 558         case '!':
 559             if (!(s[0] == '#' && s[1] == ':' && s[2] == '+'))
 560                 /*@switchbreak@*/ break;
 561             /* XXX Make sure that findNextArg deletes only next arg. */
 562             if (a == NULL) {
 563                 if ((a = findNextArg(con, 1, 1)) == NULL)
 564                     /*@switchbreak@*/ break;
 565             }
 566             s += 3;
 567
 568             alen = strlen(a);
 569             tn += alen;
 570             *te = '\0';
 571             t = realloc(t, tn);
 572             te = t + strlen(t);
 573             strncpy(te, a, alen); te += alen;
 574             continue;
 575             /*@notreached@*/ /*@switchbreak@*/ break;
 576         default:
 577             /*@switchbreak@*/ break;
 578         }
 579         *te++ = c;
 580     }
 581     *te = '\0';
 582     t = realloc(t, strlen(t) + 1);      /* XXX memory leak, hard to plug */
 583     return t;
 584 }
 585
 586 static void poptStripArg(/*@special@*/ poptContext con, int which)
 587         /*@uses con->arg_strip, con->optionStack @*/
 588         /*@defines con->arg_strip @*/
 589         /*@modifies con @*/
 590 {
 591     /*@-sizeoftype@*/
 592     if (con->arg_strip == NULL)
 593         con->arg_strip = PBM_ALLOC(con->optionStack[0].argc);
 594     if (con->arg_strip != NULL)         /* XXX can't happen */
 595     PBM_SET(which, con->arg_strip);
 596     /*@=sizeoftype@*/
 597     /*@-compdef@*/ /* LCL: con->arg_strip udefined? */
 598     return;
 599     /*@=compdef@*/
 600 }
 601
 602 static int poptSaveLong(const struct poptOption * opt, long aLong)
 603         /*@modifies opt->arg @*/
 604 {
 605     if (opt->arg == NULL)
 606         return POPT_ERROR_NULLARG;
 607
 608     if (opt->argInfo & POPT_ARGFLAG_NOT)
 609         aLong = ~aLong;
 610     switch (opt->argInfo & POPT_ARGFLAG_LOGICALOPS) {
 611     case 0:
 612         *((long *) opt->arg) = aLong;
 613         break;
 614     case POPT_ARGFLAG_OR:
 615         *((long *) opt->arg) |= aLong;
 616         break;
 617     case POPT_ARGFLAG_AND:
 618         *((long *) opt->arg) &= aLong;
 619         break;
 620     case POPT_ARGFLAG_XOR:
 621         *((long *) opt->arg) ^= aLong;
 622         break;
 623     default:
 624         return POPT_ERROR_BADOPERATION;
 625         /*@notreached@*/ break;
 626     }
 627     return 0;
 628 }
 629
 630 static int poptSaveInt(const struct poptOption * opt, long aLong)
 631         /*@modifies opt->arg @*/
 632 {
 633     if (opt->arg == NULL)
 634         return POPT_ERROR_NULLARG;
 635
 636     if (opt->argInfo & POPT_ARGFLAG_NOT)
 637         aLong = ~aLong;
 638     switch (opt->argInfo & POPT_ARGFLAG_LOGICALOPS) {
 639     case 0:
 640         *((int *) opt->arg) = aLong;
 641         break;
 642     case POPT_ARGFLAG_OR:
 643         *((int *) opt->arg) |= aLong;
 644         break;
 645     case POPT_ARGFLAG_AND:
 646         *((int *) opt->arg) &= aLong;
 647         break;
 648     case POPT_ARGFLAG_XOR:
 649         *((int *) opt->arg) ^= aLong;
 650         break;
 651     default:
 652         return POPT_ERROR_BADOPERATION;
 653         /*@notreached@*/ break;
 654     }
 655     return 0;
 656 }
 657
 658 /* returns 'val' element, -1 on last item, POPT_ERROR_* on error */
 659 int poptGetNextOpt(poptContext con)
 660 {
 661     const struct poptOption * opt = NULL;
 662     int done = 0;
 663
 664     if (con == NULL)
 665         return -1;
 666     while (!done) {
 667         const char * origOptString = NULL;
 668         poptCallbackType cb = NULL;
 669         const void * cbData = NULL;
 670         const char * longArg = NULL;
 671         int canstrip = 0;
 672         int shorty = 0;
 673
 674         while (!con->os->nextCharArg && con->os->next == con->os->argc
 675                 && con->os > con->optionStack) {
 676             cleanOSE(con->os--);
 677         }
 678         if (!con->os->nextCharArg && con->os->next == con->os->argc) {
 679             /*@-internalglobs@*/
 680             invokeCallbacksPOST(con, con->options);
 681             /*@=internalglobs@*/
 682             if (con->doExec) return execCommand(con);
 683             return -1;
 684         }
 685
 686         /* Process next long option */
 687         if (!con->os->nextCharArg) {
 688             char * localOptString, * optString;
 689             int thisopt;
 690
 691             /*@-sizeoftype@*/
 692             if (con->os->argb && PBM_ISSET(con->os->next, con->os->argb)) {
 693                 con->os->next++;
 694                 continue;
 695             }
 696             /*@=sizeoftype@*/
 697             thisopt = con->os->next;
 698             if (con->os->argv != NULL)  /* XXX can't happen */
 699             origOptString = con->os->argv[con->os->next++];
 700
 701             if (origOptString == NULL)  /* XXX can't happen */
 702                 return POPT_ERROR_BADOPT;
 703
 704             if (con->restLeftover || *origOptString != '-') {
 705                 if (con->flags & POPT_CONTEXT_POSIXMEHARDER)
 706                     con->restLeftover = 1;
 707                 if (con->flags & POPT_CONTEXT_ARG_OPTS) {
 708                     con->os->nextArg = xstrdup(origOptString);
 709                     return 0;
 710                 }
 711                 if (con->leftovers != NULL)     /* XXX can't happen */
 712                     con->leftovers[con->numLeftovers++] = origOptString;
 713                 continue;
 714             }
 715
 716             /* Make a copy we can hack at */
 717             localOptString = optString =
 718                 strcpy(alloca(strlen(origOptString) + 1), origOptString);
 719
 720             if (optString[0] == '\0')
 721                 return POPT_ERROR_BADOPT;
 722
 723             if (optString[1] == '-' && !optString[2]) {
 724                 con->restLeftover = 1;
 725                 continue;
 726             } else {
 727                 char *oe;
 728                 int singleDash;
 729
 730                 optString++;
 731                 if (*optString == '-')
 732                     singleDash = 0, optString++;
 733                 else
 734                     singleDash = 1;
 735
 736                 /* XXX aliases with arg substitution need "--alias=arg" */
 737                 if (handleAlias(con, optString, '\0', NULL))
 738                     continue;
 739
 740                 if (handleExec(con, optString, '\0'))
 741                     continue;
 742
 743                 /* Check for "--long=arg" option. */
 744                 for (oe = optString; *oe && *oe != '='; oe++)
 745                     {};
 746                 if (*oe == '=') {
 747                     *oe++ = '\0';
 748                     /* XXX longArg is mapped back to persistent storage. */
 749                     longArg = origOptString + (oe - localOptString);
 750                 }
 751
 752                 opt = findOption(con->options, optString, '\0', &cb, &cbData,
 753                                  singleDash);
 754                 if (!opt && !singleDash)
 755                     return POPT_ERROR_BADOPT;
 756             }
 757
 758             if (!opt) {
 759                 con->os->nextCharArg = origOptString + 1;
 760             } else {
 761                 if (con->os == con->optionStack &&
 762                    opt->argInfo & POPT_ARGFLAG_STRIP)
 763                 {
 764                     canstrip = 1;
 765                     poptStripArg(con, thisopt);
 766                 }
 767                 shorty = 0;
 768             }
 769         }
 770
 771         /* Process next short option */
 772         /*@-branchstate@*/              /* FIX: W2DO? */
 773         if (con->os->nextCharArg) {
 774             origOptString = con->os->nextCharArg;
 775
 776             con->os->nextCharArg = NULL;
 777
 778             if (handleAlias(con, NULL, *origOptString, origOptString + 1))
 779                 continue;
 780
 781             if (handleExec(con, NULL, *origOptString)) {
 782                 /* Restore rest of short options for further processing */
 783                 origOptString++;
 784                 if (*origOptString != '\0')
 785                     con->os->nextCharArg = origOptString;
 786                 continue;
 787             }
 788
 789             opt = findOption(con->options, NULL, *origOptString, &cb,
 790                              &cbData, 0);
 791             if (!opt)
 792                 return POPT_ERROR_BADOPT;
 793             shorty = 1;
 794
 795             origOptString++;
 796             if (*origOptString != '\0')
 797                 con->os->nextCharArg = origOptString;
 798         }
 799         /*@=branchstate@*/
 800
 801         if (opt == NULL) return POPT_ERROR_BADOPT;      /* XXX can't happen */
 802         if (opt->arg && (opt->argInfo & POPT_ARG_MASK) == POPT_ARG_NONE) {
 803             if (poptSaveInt(opt, 1L))
 804                 return POPT_ERROR_BADOPERATION;
 805         } else if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_VAL) {
 806             if (opt->arg) {
 807                 if (poptSaveInt(opt, (long)opt->val))
 808                     return POPT_ERROR_BADOPERATION;
 809             }
 810         } else if ((opt->argInfo & POPT_ARG_MASK) != POPT_ARG_NONE) {
 811             con->os->nextArg = _free(con->os->nextArg);
 812             /*@-usedef@*/       /* FIX: W2DO? */
 813             if (longArg) {
 814             /*@=usedef@*/
 815                 longArg = expandNextArg(con, longArg);
 816                 con->os->nextArg = longArg;
 817             } else if (con->os->nextCharArg) {
 818                 longArg = expandNextArg(con, con->os->nextCharArg);
 819                 con->os->nextArg = longArg;
 820                 con->os->nextCharArg = NULL;
 821             } else {
 822                 while (con->os->next == con->os->argc &&
 823                        con->os > con->optionStack) {
 824                     cleanOSE(con->os--);
 825                 }
 826                 if (con->os->next == con->os->argc) {
 827                     if (!(opt->argInfo & POPT_ARGFLAG_OPTIONAL))
 828                         /*@-compdef@*/  /* FIX: con->os->argv not defined */
 829                         return POPT_ERROR_NOARG;
 830                         /*@=compdef@*/
 831                     con->os->nextArg = NULL;
 832                 } else {
 833
 834                     /*
 835                      * Make sure this isn't part of a short arg or the
 836                      * result of an alias expansion.
 837                      */
 838                     if (con->os == con->optionStack &&
 839                         (opt->argInfo & POPT_ARGFLAG_STRIP) &&
 840                         canstrip) {
 841                         poptStripArg(con, con->os->next);
 842                     }
 843
 844                     if (con->os->argv != NULL) {        /* XXX can't happen */
 845                         /* XXX watchout: subtle side-effects live here. */
 846                         longArg = con->os->argv[con->os->next++];
 847                         longArg = expandNextArg(con, longArg);
 848                         con->os->nextArg = longArg;
 849                     }
 850                 }
 851             }
 852             longArg = NULL;
 853
 854             if (opt->arg) {
 855                 switch (opt->argInfo & POPT_ARG_MASK) {
 856                 case POPT_ARG_STRING:
 857                     /* XXX memory leak, hard to plug */
 858                     *((const char **) opt->arg) = (con->os->nextArg)
 859                         ? xstrdup(con->os->nextArg) : NULL;
 860                     /*@switchbreak@*/ break;
 861
 862                 case POPT_ARG_INT:
 863                 case POPT_ARG_LONG:
 864                 {   long aLong = 0;
 865                     char *end;
 866
 867                     if (con->os->nextArg) {
 868                         aLong = strtol(con->os->nextArg, &end, 0);
 869                         if (!(end && *end == '\0'))
 870                             return POPT_ERROR_BADNUMBER;
 871                     }
 872
 873                     if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_LONG) {
 874                         if (aLong == LONG_MIN || aLong == LONG_MAX)
 875                             return POPT_ERROR_OVERFLOW;
 876                         if (poptSaveLong(opt, aLong))
 877                             return POPT_ERROR_BADOPERATION;
 878                     } else {
 879                         if (aLong > INT_MAX || aLong < INT_MIN)
 880                             return POPT_ERROR_OVERFLOW;
 881                         if (poptSaveInt(opt, aLong))
 882                             return POPT_ERROR_BADOPERATION;
 883                     }
 884                 }   /*@switchbreak@*/ break;
 885
 886                 case POPT_ARG_FLOAT:
 887                 case POPT_ARG_DOUBLE:
 888                 {   double aDouble = 0.0;
 889                     char *end;
 890
 891                     if (con->os->nextArg) {
 892                         /*@-mods@*/
 893                         int saveerrno = errno;
 894                         errno = 0;
 895                         aDouble = strtod(con->os->nextArg, &end);
 896                         if (errno == ERANGE)
 897                             return POPT_ERROR_OVERFLOW;
 898                         errno = saveerrno;
 899                         /*@=mods@*/
 900                         if (*end != '\0')
 901                             return POPT_ERROR_BADNUMBER;
 902                     }
 903
 904                     if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_DOUBLE) {
 905                         *((double *) opt->arg) = aDouble;
 906                     } else {
 907 #ifndef DBL_EPSILON
 908 #define DBL_EPSILON 2.2204460492503131e-16
 909 #endif
 910 #define MY_ABS(a) ((((a) - 0.0) < DBL_EPSILON) ? -(a) : (a))
 911                         if ((MY_ABS(aDouble) - FLT_MAX) > DBL_EPSILON)
 912                             return POPT_ERROR_OVERFLOW;
 913                         if ((FLT_MIN - MY_ABS(aDouble)) > DBL_EPSILON)
 914                             return POPT_ERROR_OVERFLOW;
 915                         *((float *) opt->arg) = aDouble;
 916                     }
 917                 }   /*@switchbreak@*/ break;
 918                 default:
 919                     fprintf(stdout,
 920                         POPT_("option type (%d) not implemented in popt\n"),
 921                         (opt->argInfo & POPT_ARG_MASK));
 922                     exit(EXIT_FAILURE);
 923                     /*@notreached@*/ /*@switchbreak@*/ break;
 924                 }
 925             }
 926         }
 927
 928         if (cb) {
 929             /*@-internalglobs@*/
 930             invokeCallbacksOPTION(con, con->options, opt, cbData, shorty);
 931             /*@=internalglobs@*/
 932         } else if (opt->val && ((opt->argInfo & POPT_ARG_MASK) != POPT_ARG_VAL))
 933             done = 1;
 934
 935         if ((con->finalArgvCount + 2) >= (con->finalArgvAlloced)) {
 936             con->finalArgvAlloced += 10;
 937             con->finalArgv = realloc(con->finalArgv,
 938                             sizeof(*con->finalArgv) * con->finalArgvAlloced);
 939         }
 940
 941         if (con->finalArgv != NULL)
 942         {   char *s = malloc((opt->longName ? strlen(opt->longName) : 0) + 3);
 943             if (s != NULL) {    /* XXX can't happen */
 944                 if (opt->longName)
 945                     sprintf(s, "%s%s",
 946                         ((opt->argInfo & POPT_ARGFLAG_ONEDASH) ? "-" : "--"),
 947                         opt->longName);
 948                 else
 949                     sprintf(s, "-%c", opt->shortName);
 950                 con->finalArgv[con->finalArgvCount++] = s;
 951             } else
 952                 con->finalArgv[con->finalArgvCount++] = NULL;
 953         }
 954
 955         if (opt->arg && (opt->argInfo & POPT_ARG_MASK) == POPT_ARG_NONE)
 956             /*@-ifempty@*/ ; /*@=ifempty@*/
 957         else if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_VAL)
 958             /*@-ifempty@*/ ; /*@=ifempty@*/
 959         else if ((opt->argInfo & POPT_ARG_MASK) != POPT_ARG_NONE) {
 960             if (con->finalArgv != NULL && con->os->nextArg)
 961                 con->finalArgv[con->finalArgvCount++] =
 962                         /*@-nullpass@*/ /* LCL: con->os->nextArg != NULL */
 963                         xstrdup(con->os->nextArg);
 964                         /*@=nullpass@*/
 965         }
 966     }
 967
 968     return (opt ? opt->val : -1);       /* XXX can't happen */
 969 }
 970
 971 const char * poptGetOptArg(poptContext con)
 972 {
 973     const char * ret = NULL;
 974     /*@-branchstate@*/
 975     if (con) {
 976         ret = con->os->nextArg;
 977         con->os->nextArg = NULL;
 978     }
 979     /*@=branchstate@*/
 980     return ret;
 981 }
 982
 983 const char * poptGetArg(poptContext con)
 984 {
 985     const char * ret = NULL;
 986     if (con && con->leftovers != NULL && con->nextLeftover < con->numLeftovers)
 987         ret = con->leftovers[con->nextLeftover++];
 988     return ret;
 989 }
 990
 991 const char * poptPeekArg(poptContext con)
 992 {
 993     const char * ret = NULL;
 994     if (con && con->leftovers != NULL && con->nextLeftover < con->numLeftovers)
 995         ret = con->leftovers[con->nextLeftover];
 996     return ret;
 997 }
 998
 999 const char ** poptGetArgs(poptContext con)
1000 {
1001     if (con == NULL ||
1002         con->leftovers == NULL || con->numLeftovers == con->nextLeftover)
1003         return NULL;
1004
1005     /* some apps like [like RPM ;-) ] need this NULL terminated */
1006     con->leftovers[con->numLeftovers] = NULL;
1007
1008     /*@-nullret -nullstate @*/  /* FIX: typedef double indirection. */
1009     return (con->leftovers + con->nextLeftover);
1010     /*@=nullret =nullstate @*/
1011 }
1012
1013 poptContext poptFreeContext(poptContext con)
1014 {
1015     poptItem item;
1016     int i;
1017
1018     if (con == NULL) return con;
1019     poptResetContext(con);
1020     con->os->argb = _free(con->os->argb);
1021
1022     if (con->aliases != NULL)
1023     for (i = 0; i < con->numAliases; i++) {
1024         item = con->aliases + i;
1025         /*@-modobserver -observertrans -dependenttrans@*/
1026         item->option.longName = _free(item->option.longName);
1027         item->option.descrip = _free(item->option.descrip);
1028         item->option.argDescrip = _free(item->option.argDescrip);
1029         /*@=modobserver =observertrans =dependenttrans@*/
1030         item->argv = _free(item->argv);
1031     }
1032     con->aliases = _free(con->aliases);
1033
1034     if (con->execs != NULL)
1035     for (i = 0; i < con->numExecs; i++) {
1036         item = con->execs + i;
1037         /*@-modobserver -observertrans -dependenttrans@*/
1038         item->option.longName = _free(item->option.longName);
1039         item->option.descrip = _free(item->option.descrip);
1040         item->option.argDescrip = _free(item->option.argDescrip);
1041         /*@=modobserver =observertrans =dependenttrans@*/
1042         item->argv = _free(item->argv);
1043     }
1044     con->execs = _free(con->execs);
1045
1046     con->leftovers = _free(con->leftovers);
1047     con->finalArgv = _free(con->finalArgv);
1048     con->appName = _free(con->appName);
1049     con->otherHelp = _free(con->otherHelp);
1050     con->execPath = _free(con->execPath);
1051     con->arg_strip = PBM_FREE(con->arg_strip);
1052
1053     con = _free(con);
1054     return con;
1055 }
1056
1057 int poptAddAlias(poptContext con, struct poptAlias alias,
1058                 /*@unused@*/ UNUSED(int flags))
1059 {
1060     poptItem item = (poptItem) alloca(sizeof(*item));
1061     memset(item, 0, sizeof(*item));
1062     item->option.longName = alias.longName;
1063     item->option.shortName = alias.shortName;
1064     item->option.argInfo = POPT_ARGFLAG_DOC_HIDDEN;
1065     item->option.arg = 0;
1066     item->option.val = 0;
1067     item->option.descrip = NULL;
1068     item->option.argDescrip = NULL;
1069     item->argc = alias.argc;
1070     item->argv = alias.argv;
1071     return poptAddItem(con, item, 0);
1072 }
1073
1074 /*@-mustmod@*/ /* LCL: con not modified? */
1075 int poptAddItem(poptContext con, poptItem newItem, int flags)
1076 {
1077     poptItem * items, item;
1078     int * nitems;
1079
1080     switch (flags) {
1081     case 1:
1082         items = &con->execs;
1083         nitems = &con->numExecs;
1084         break;
1085     case 0:
1086         items = &con->aliases;
1087         nitems = &con->numAliases;
1088         break;
1089     default:
1090         return 1;
1091         /*@notreached@*/ break;
1092     }
1093
1094     *items = realloc((*items), ((*nitems) + 1) * sizeof(**items));
1095     if ((*items) == NULL)
1096         return 1;
1097
1098     item = (*items) + (*nitems);
1099
1100     item->option.longName =
1101         (newItem->option.longName ? xstrdup(newItem->option.longName) : NULL);
1102     item->option.shortName = newItem->option.shortName;
1103     item->option.argInfo = newItem->option.argInfo;
1104     item->option.arg = newItem->option.arg;
1105     item->option.val = newItem->option.val;
1106     item->option.descrip =
1107         (newItem->option.descrip ? xstrdup(newItem->option.descrip) : NULL);
1108     item->option.argDescrip =
1109        (newItem->option.argDescrip ? xstrdup(newItem->option.argDescrip) : NULL);
1110     item->argc = newItem->argc;
1111     item->argv = newItem->argv;
1112
1113     (*nitems)++;
1114
1115     return 0;
1116 }
1117 /*@=mustmod@*/
1118
1119 const char * poptBadOption(poptContext con, int flags)
1120 {
1121     struct optionStackEntry * os = NULL;
1122
1123     if (con != NULL)
1124         os = (flags & POPT_BADOPTION_NOALIAS) ? con->optionStack : con->os;
1125
1126     /*@-nullderef@*/    /* LCL: os->argv != NULL */
1127     return (os && os->argv ? os->argv[os->next - 1] : NULL);
1128     /*@=nullderef@*/
1129 }
1130
1131 const char * poptStrerror(const int error)
1132 {
1133     switch (error) {
1134       case POPT_ERROR_NOARG:
1135         return POPT_("missing argument");
1136       case POPT_ERROR_BADOPT:
1137         return POPT_("unknown option");
1138       case POPT_ERROR_BADOPERATION:
1139         return POPT_("mutually exclusive logical operations requested");
1140       case POPT_ERROR_NULLARG:
1141         return POPT_("opt->arg should not be NULL");
1142       case POPT_ERROR_OPTSTOODEEP:
1143         return POPT_("aliases nested too deeply");
1144       case POPT_ERROR_BADQUOTE:
1145         return POPT_("error in parameter quoting");
1146       case POPT_ERROR_BADNUMBER:
1147         return POPT_("invalid numeric value");
1148       case POPT_ERROR_OVERFLOW:
1149         return POPT_("number too large or too small");
1150       case POPT_ERROR_MALLOC:
1151         return POPT_("memory allocation failed");
1152       case POPT_ERROR_ERRNO:
1153         return strerror(errno);
1154       default:
1155         return POPT_("unknown error");
1156     }
1157 }
1158
1159 int poptStuffArgs(poptContext con, const char ** argv)
1160 {
1161     int argc;
1162     int rc;
1163
1164     if ((con->os - con->optionStack) == POPT_OPTION_DEPTH)
1165         return POPT_ERROR_OPTSTOODEEP;
1166
1167     for (argc = 0; argv[argc]; argc++)
1168         {};
1169
1170     con->os++;
1171     con->os->next = 0;
1172     con->os->nextArg = NULL;
1173     con->os->nextCharArg = NULL;
1174     con->os->currAlias = NULL;
1175     rc = poptDupArgv(argc, argv, &con->os->argc, &con->os->argv);
1176     con->os->argb = NULL;
1177     con->os->stuffed = 1;
1178
1179     return rc;
1180 }
1181
1182 const char * poptGetInvocationName(poptContext con)
1183 {
1184     return (con->os->argv ? con->os->argv[0] : "");
1185 }
1186
1187 int poptStrippedArgv(poptContext con, int argc, char ** argv)
1188 {
1189     int numargs = argc;
1190     int j = 1;
1191     int i;
1192
1193     /*@-sizeoftype@*/
1194     if (con->arg_strip)
1195     for (i = 1; i < argc; i++) {
1196         if (PBM_ISSET(i, con->arg_strip))
1197             numargs--;
1198     }
1199
1200     for (i = 1; i < argc; i++) {
1201         if (con->arg_strip && PBM_ISSET(i, con->arg_strip))
1202             continue;
1203         argv[j] = (j < numargs) ? argv[i] : NULL;
1204         j++;
1205     }
1206     /*@=sizeoftype@*/
1207
1208     return numargs;
1209 }