intl/dcigettext.c

   1 /* Implementation of the internal dcigettext function.
   2    Copyright (C) 1995-2017 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU Lesser General Public License as published by
   6    the Free Software Foundation; either version 2.1 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public License
  15    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  16
  17 /* Tell glibc's <string.h> to provide a prototype for mempcpy().
  18    This must come before <config.h> because <config.h> may include
  19    <features.h>, and once <features.h> has been included, it's too late.  */
  20 #ifndef _GNU_SOURCE
  21 # define _GNU_SOURCE    1
  22 #endif
  23
  24 #ifdef HAVE_CONFIG_H
  25 # include <config.h>
  26 #endif
  27
  28 #include <sys/types.h>
  29
  30 #ifdef __GNUC__
  31 # define alloca __builtin_alloca
  32 # define HAVE_ALLOCA 1
  33 #else
  34 # ifdef _MSC_VER
  35 #  include <malloc.h>
  36 #  define alloca _alloca
  37 # else
  38 #  if defined HAVE_ALLOCA_H || defined _LIBC
  39 #   include <alloca.h>
  40 #  else
  41 #   ifdef _AIX
  42  #pragma alloca
  43 #   else
  44 #    ifndef alloca
  45 char *alloca ();
  46 #    endif
  47 #   endif
  48 #  endif
  49 # endif
  50 #endif
  51
  52 #include <errno.h>
  53 #ifndef errno
  54 extern int errno;
  55 #endif
  56 #ifndef __set_errno
  57 # define __set_errno(val) errno = (val)
  58 #endif
  59
  60 #include <stddef.h>
  61 #include <stdlib.h>
  62 #include <stdio.h>
  63 #include <string.h>
  64
  65 #if defined HAVE_UNISTD_H || defined _LIBC
  66 # include <unistd.h>
  67 #endif
  68
  69 #include <locale.h>
  70
  71 #ifdef _LIBC
  72   /* Guess whether integer division by zero raises signal SIGFPE.
  73      Set to 1 only if you know for sure.  In case of doubt, set to 0.  */
  74 # if defined __alpha__ || defined __arm__ || defined __i386__ \
  75      || defined __m68k__ || defined __s390__
  76 #  define INTDIV0_RAISES_SIGFPE 1
  77 # else
  78 #  define INTDIV0_RAISES_SIGFPE 0
  79 # endif
  80 #endif
  81 #if !INTDIV0_RAISES_SIGFPE
  82 # include <signal.h>
  83 #endif
  84
  85 #if defined HAVE_SYS_PARAM_H || defined _LIBC
  86 # include <sys/param.h>
  87 #endif
  88
  89 #if !defined _LIBC
  90 # include "localcharset.h"
  91 #endif
  92
  93 #include "gettextP.h"
  94 #include "plural-exp.h"
  95 #ifdef _LIBC
  96 # include <libintl.h>
  97 #else
  98 # ifdef IN_LIBGLOCALE
  99 #  include <libintl.h>
 100 # endif
 101 # include "libgnuintl.h"
 102 #endif
 103 #include "hash-string.h"
 104
 105 /* Handle multi-threaded applications.  */
 106 #ifdef _LIBC
 107 # include <libc-lock.h>
 108 # define gl_rwlock_define_initialized __libc_rwlock_define_initialized
 109 # define gl_rwlock_rdlock __libc_rwlock_rdlock
 110 # define gl_rwlock_wrlock __libc_rwlock_wrlock
 111 # define gl_rwlock_unlock __libc_rwlock_unlock
 112 #else
 113 # include "lock.h"
 114 #endif
 115
 116 /* Alignment of types.  */
 117 #if defined __GNUC__ && __GNUC__ >= 2
 118 # define alignof(TYPE) __alignof__ (TYPE)
 119 #else
 120 # define alignof(TYPE) \
 121     ((int) &((struct { char dummy1; TYPE dummy2; } *) 0)->dummy2)
 122 #endif
 123
 124 /* Some compilers, like SunOS4 cc, don't have offsetof in <stddef.h>.  */
 125 #ifndef offsetof
 126 # define offsetof(type,ident) ((size_t)&(((type*)0)->ident))
 127 #endif
 128
 129 /* @@ end of prolog @@ */
 130
 131 #ifdef _LIBC
 132 /* Rename the non ANSI C functions.  This is required by the standard
 133    because some ANSI C functions will require linking with this object
 134    file and the name space must not be polluted.  */
 135 # define strdup __strdup
 136 # define getcwd __getcwd
 137 # ifndef stpcpy
 138 #  define stpcpy __stpcpy
 139 # endif
 140 # define tfind __tfind
 141 #else
 142 # if !defined HAVE_GETCWD
 143 char *getwd ();
 144 #  define getcwd(buf, max) getwd (buf)
 145 # else
 146 #  if VMS
 147 #   define getcwd(buf, max) (getcwd) (buf, max, 0)
 148 #  else
 149 char *getcwd ();
 150 #  endif
 151 # endif
 152 # ifndef HAVE_STPCPY
 153 static char *stpcpy (char *dest, const char *src);
 154 # endif
 155 # ifndef HAVE_MEMPCPY
 156 static void *mempcpy (void *dest, const void *src, size_t n);
 157 # endif
 158 #endif
 159
 160 /* Use a replacement if the system does not provide the `tsearch' function
 161    family.  */
 162 #if defined HAVE_TSEARCH || defined _LIBC
 163 # include <search.h>
 164 #else
 165 # define tsearch libintl_tsearch
 166 # define tfind libintl_tfind
 167 # define tdelete libintl_tdelete
 168 # define twalk libintl_twalk
 169 # include "tsearch.h"
 170 #endif
 171
 172 #ifdef _LIBC
 173 # define tsearch __tsearch
 174 #endif
 175
 176 /* Amount to increase buffer size by in each try.  */
 177 #define PATH_INCR 32
 178
 179 /* The following is from pathmax.h.  */
 180 /* Non-POSIX BSD systems might have gcc's limits.h, which doesn't define
 181    PATH_MAX but might cause redefinition warnings when sys/param.h is
 182    later included (as on MORE/BSD 4.3).  */
 183 #if defined _POSIX_VERSION || (defined HAVE_LIMITS_H && !defined __GNUC__)
 184 # include <limits.h>
 185 #endif
 186
 187 #ifndef _POSIX_PATH_MAX
 188 # define _POSIX_PATH_MAX 255
 189 #endif
 190
 191 #if !defined PATH_MAX && defined _PC_PATH_MAX
 192 # define PATH_MAX (__pathconf ("/", _PC_PATH_MAX) < 1 ? 1024 : __pathconf ("/", _PC_PATH_MAX))
 193 #endif
 194
 195 /* Don't include sys/param.h if it already has been.  */
 196 #if defined HAVE_SYS_PARAM_H && !defined PATH_MAX && !defined MAXPATHLEN
 197 # include <sys/param.h>
 198 #endif
 199
 200 #if !defined PATH_MAX && defined MAXPATHLEN
 201 # define PATH_MAX MAXPATHLEN
 202 #endif
 203
 204 #ifndef PATH_MAX
 205 # define PATH_MAX _POSIX_PATH_MAX
 206 #endif
 207
 208 /* Pathname support.
 209    ISSLASH(C)           tests whether C is a directory separator character.
 210    IS_ABSOLUTE_PATH(P)  tests whether P is an absolute path.  If it is not,
 211                         it may be concatenated to a directory pathname.
 212    IS_PATH_WITH_DIR(P)  tests whether P contains a directory specification.
 213  */
 214 #if defined _WIN32 || defined __WIN32__ || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__
 215   /* Win32, Cygwin, OS/2, DOS */
 216 # define ISSLASH(C) ((C) == '/' || (C) == '\\')
 217 # define HAS_DEVICE(P) \
 218     ((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) \
 219      && (P)[1] == ':')
 220 # define IS_ABSOLUTE_PATH(P) (ISSLASH ((P)[0]) || HAS_DEVICE (P))
 221 # define IS_PATH_WITH_DIR(P) \
 222     (strchr (P, '/') != NULL || strchr (P, '\\') != NULL || HAS_DEVICE (P))
 223 #else
 224   /* Unix */
 225 # define ISSLASH(C) ((C) == '/')
 226 # define IS_ABSOLUTE_PATH(P) ISSLASH ((P)[0])
 227 # define IS_PATH_WITH_DIR(P) (strchr (P, '/') != NULL)
 228 #endif
 229
 230 /* Whether to support different locales in different threads.  */
 231 #if defined _LIBC || HAVE_USELOCALE || defined IN_LIBGLOCALE
 232 # define HAVE_PER_THREAD_LOCALE
 233 #endif
 234
 235 /* This is the type used for the search tree where known translations
 236    are stored.  */
 237 struct known_translation_t
 238 {
 239   /* Domain in which to search.  */
 240   const char *domainname;
 241
 242   /* The category.  */
 243   int category;
 244
 245 #ifdef HAVE_PER_THREAD_LOCALE
 246   /* Name of the relevant locale category, or "" for the global locale.  */
 247   const char *localename;
 248 #endif
 249
 250 #ifdef IN_LIBGLOCALE
 251   /* The character encoding.  */
 252   const char *encoding;
 253 #endif
 254
 255   /* State of the catalog counter at the point the string was found.  */
 256   int counter;
 257
 258   /* Catalog where the string was found.  */
 259   struct loaded_l10nfile *domain;
 260
 261   /* And finally the translation.  */
 262   const char *translation;
 263   size_t translation_length;
 264
 265   /* Pointer to the string in question.  */
 266   union
 267     {
 268       char appended[ZERO];  /* used if domain != NULL */
 269       const char *ptr;      /* used if domain == NULL */
 270     }
 271   msgid;
 272 };
 273
 274 gl_rwlock_define_initialized (static, tree_lock)
 275
 276 /* Root of the search tree with known translations.  */
 277 static void *root;
 278
 279 /* Function to compare two entries in the table of known translations.  */
 280 static int
 281 transcmp (const void *p1, const void *p2)
 282 {
 283   const struct known_translation_t *s1;
 284   const struct known_translation_t *s2;
 285   int result;
 286
 287   s1 = (const struct known_translation_t *) p1;
 288   s2 = (const struct known_translation_t *) p2;
 289
 290   result = strcmp (s1->domain != NULL ? s1->msgid.appended : s1->msgid.ptr,
 291                    s2->domain != NULL ? s2->msgid.appended : s2->msgid.ptr);
 292   if (result == 0)
 293     {
 294       result = strcmp (s1->domainname, s2->domainname);
 295       if (result == 0)
 296         {
 297 #ifdef HAVE_PER_THREAD_LOCALE
 298           result = strcmp (s1->localename, s2->localename);
 299           if (result == 0)
 300 #endif
 301             {
 302 #ifdef IN_LIBGLOCALE
 303               result = strcmp (s1->encoding, s2->encoding);
 304               if (result == 0)
 305 #endif
 306                 /* We compare the category last (though this is the cheapest
 307                    operation) since it is hopefully always the same (namely
 308                    LC_MESSAGES).  */
 309                 result = s1->category - s2->category;
 310             }
 311         }
 312     }
 313
 314   return result;
 315 }
 316
 317 /* Name of the default domain used for gettext(3) prior any call to
 318    textdomain(3).  The default value for this is "messages".  */
 319 const char _nl_default_default_domain[] attribute_hidden = "messages";
 320
 321 #ifndef IN_LIBGLOCALE
 322 /* Value used as the default domain for gettext(3).  */
 323 const char *_nl_current_default_domain attribute_hidden
 324      = _nl_default_default_domain;
 325 #endif
 326
 327 /* Contains the default location of the message catalogs.  */
 328 #if defined __EMX__
 329 extern const char _nl_default_dirname[];
 330 #else
 331 # ifdef _LIBC
 332 extern const char _nl_default_dirname[];
 333 libc_hidden_proto (_nl_default_dirname)
 334 # endif
 335 const char _nl_default_dirname[] = LOCALEDIR;
 336 # ifdef _LIBC
 337 libc_hidden_data_def (_nl_default_dirname)
 338 # endif
 339 #endif
 340
 341 #ifndef IN_LIBGLOCALE
 342 /* List with bindings of specific domains created by bindtextdomain()
 343    calls.  */
 344 struct binding *_nl_domain_bindings;
 345 #endif
 346
 347 /* Prototypes for local functions.  */
 348 static char *plural_lookup (struct loaded_l10nfile *domain,
 349                             unsigned long int n,
 350                             const char *translation, size_t translation_len);
 351
 352 #ifdef IN_LIBGLOCALE
 353 static const char *guess_category_value (int category,
 354                                          const char *categoryname,
 355                                          const char *localename);
 356 #else
 357 static const char *guess_category_value (int category,
 358                                          const char *categoryname);
 359 #endif
 360
 361 #ifdef _LIBC
 362 # include "../locale/localeinfo.h"
 363 # define category_to_name(category) \
 364   _nl_category_names.str + _nl_category_name_idxs[category]
 365 #else
 366 static const char *category_to_name (int category);
 367 #endif
 368 #if (defined _LIBC || HAVE_ICONV) && !defined IN_LIBGLOCALE
 369 static const char *get_output_charset (struct binding *domainbinding);
 370 #endif
 371
 372
 373 /* For those losing systems which don't have `alloca' we have to add
 374    some additional code emulating it.  */
 375 #ifdef HAVE_ALLOCA
 376 /* Nothing has to be done.  */
 377 # define freea(p) /* nothing */
 378 # define ADD_BLOCK(list, address) /* nothing */
 379 # define FREE_BLOCKS(list) /* nothing */
 380 #else
 381 struct block_list
 382 {
 383   void *address;
 384   struct block_list *next;
 385 };
 386 # define ADD_BLOCK(list, addr)                                                \
 387   do {                                                                        \
 388     struct block_list *newp = (struct block_list *) malloc (sizeof (*newp));  \
 389     /* If we cannot get a free block we cannot add the new element to         \
 390        the list.  */                                                          \
 391     if (newp != NULL) {                                                       \
 392       newp->address = (addr);                                                 \
 393       newp->next = (list);                                                    \
 394       (list) = newp;                                                          \
 395     }                                                                         \
 396   } while (0)
 397 # define FREE_BLOCKS(list)                                                    \
 398   do {                                                                        \
 399     while (list != NULL) {                                                    \
 400       struct block_list *old = list;                                          \
 401       list = list->next;                                                      \
 402       free (old->address);                                                    \
 403       free (old);                                                             \
 404     }                                                                         \
 405   } while (0)
 406 # undef alloca
 407 # define alloca(size) (malloc (size))
 408 # define freea(p) free (p)
 409 #endif  /* have alloca */
 410
 411
 412 #ifdef _LIBC
 413 /* List of blocks allocated for translations.  */
 414 typedef struct transmem_list
 415 {
 416   struct transmem_list *next;
 417   char data[ZERO];
 418 } transmem_block_t;
 419 static struct transmem_list *transmem_list;
 420 #else
 421 typedef unsigned char transmem_block_t;
 422 #endif
 423
 424
 425 /* Names for the libintl functions are a problem.  They must not clash
 426    with existing names and they should follow ANSI C.  But this source
 427    code is also used in GNU C Library where the names have a __
 428    prefix.  So we have to make a difference here.  */
 429 #ifdef _LIBC
 430 # define DCIGETTEXT __dcigettext
 431 #else
 432 # define DCIGETTEXT libintl_dcigettext
 433 #endif
 434
 435 /* Lock variable to protect the global data in the gettext implementation.  */
 436 gl_rwlock_define_initialized (, _nl_state_lock attribute_hidden)
 437
 438 /* Checking whether the binaries runs SUID must be done and glibc provides
 439    easier methods therefore we make a difference here.  */
 440 #ifdef _LIBC
 441 # define ENABLE_SECURE __libc_enable_secure
 442 # define DETERMINE_SECURE
 443 #else
 444 # ifndef HAVE_GETUID
 445 #  define getuid() 0
 446 # endif
 447 # ifndef HAVE_GETGID
 448 #  define getgid() 0
 449 # endif
 450 # ifndef HAVE_GETEUID
 451 #  define geteuid() getuid()
 452 # endif
 453 # ifndef HAVE_GETEGID
 454 #  define getegid() getgid()
 455 # endif
 456 static int enable_secure;
 457 # define ENABLE_SECURE (enable_secure == 1)
 458 # define DETERMINE_SECURE \
 459   if (enable_secure == 0)                                                     \
 460     {                                                                         \
 461       if (getuid () != geteuid () || getgid () != getegid ())                 \
 462         enable_secure = 1;                                                    \
 463       else                                                                    \
 464         enable_secure = -1;                                                   \
 465     }
 466 #endif
 467
 468 /* Get the function to evaluate the plural expression.  */
 469 #include "eval-plural.h"
 470
 471 /* Look up MSGID in the DOMAINNAME message catalog for the current
 472    CATEGORY locale and, if PLURAL is nonzero, search over string
 473    depending on the plural form determined by N.  */
 474 #ifdef IN_LIBGLOCALE
 475 char *
 476 gl_dcigettext (const char *domainname,
 477                const char *msgid1, const char *msgid2,
 478                int plural, unsigned long int n,
 479                int category,
 480                const char *localename, const char *encoding)
 481 #else
 482 char *
 483 DCIGETTEXT (const char *domainname, const char *msgid1, const char *msgid2,
 484             int plural, unsigned long int n, int category)
 485 #endif
 486 {
 487 #ifndef HAVE_ALLOCA
 488   struct block_list *block_list = NULL;
 489 #endif
 490   struct loaded_l10nfile *domain;
 491   struct binding *binding;
 492   const char *categoryname;
 493   const char *categoryvalue;
 494   const char *dirname;
 495   char *xdirname = NULL;
 496   char *xdomainname;
 497   char *single_locale;
 498   char *retval;
 499   size_t retlen;
 500   int saved_errno;
 501   struct known_translation_t search;
 502   struct known_translation_t **foundp = NULL;
 503 #if defined HAVE_PER_THREAD_LOCALE && !defined IN_LIBGLOCALE
 504   const char *localename;
 505 #endif
 506   size_t domainname_len;
 507
 508   /* If no real MSGID is given return NULL.  */
 509   if (msgid1 == NULL)
 510     return NULL;
 511
 512 #ifdef _LIBC
 513   if (category < 0 || category >= __LC_LAST || category == LC_ALL)
 514     /* Bogus.  */
 515     return (plural == 0
 516             ? (char *) msgid1
 517             /* Use the Germanic plural rule.  */
 518             : n == 1 ? (char *) msgid1 : (char *) msgid2);
 519 #endif
 520
 521   /* Preserve the `errno' value.  */
 522   saved_errno = errno;
 523
 524 #ifdef _LIBC
 525   __libc_rwlock_define (extern, __libc_setlocale_lock attribute_hidden)
 526   __libc_rwlock_rdlock (__libc_setlocale_lock);
 527 #endif
 528
 529   gl_rwlock_rdlock (_nl_state_lock);
 530
 531   /* If DOMAINNAME is NULL, we are interested in the default domain.  If
 532      CATEGORY is not LC_MESSAGES this might not make much sense but the
 533      definition left this undefined.  */
 534   if (domainname == NULL)
 535     domainname = _nl_current_default_domain;
 536
 537   /* OS/2 specific: backward compatibility with older libintl versions  */
 538 #ifdef LC_MESSAGES_COMPAT
 539   if (category == LC_MESSAGES_COMPAT)
 540     category = LC_MESSAGES;
 541 #endif
 542
 543   /* Try to find the translation among those which we found at
 544      some time.  */
 545   search.domain = NULL;
 546   search.msgid.ptr = msgid1;
 547   search.domainname = domainname;
 548   search.category = category;
 549 #ifdef HAVE_PER_THREAD_LOCALE
 550 # ifndef IN_LIBGLOCALE
 551 #  ifdef _LIBC
 552   localename = __current_locale_name (category);
 553 #  else
 554   categoryname = category_to_name (category);
 555 #   define CATEGORYNAME_INITIALIZED
 556   localename = _nl_locale_name_thread_unsafe (category, categoryname);
 557   if (localename == NULL)
 558     localename = "";
 559 #  endif
 560 # endif
 561   search.localename = localename;
 562 # ifdef IN_LIBGLOCALE
 563   search.encoding = encoding;
 564 # endif
 565
 566   /* Since tfind/tsearch manage a balanced tree, concurrent tfind and
 567      tsearch calls can be fatal.  */
 568   gl_rwlock_rdlock (tree_lock);
 569
 570   foundp = (struct known_translation_t **) tfind (&search, &root, transcmp);
 571
 572   gl_rwlock_unlock (tree_lock);
 573
 574   if (foundp != NULL && (*foundp)->counter == _nl_msg_cat_cntr)
 575     {
 576       /* Now deal with plural.  */
 577       if (plural)
 578         retval = plural_lookup ((*foundp)->domain, n, (*foundp)->translation,
 579                                 (*foundp)->translation_length);
 580       else
 581         retval = (char *) (*foundp)->translation;
 582
 583       gl_rwlock_unlock (_nl_state_lock);
 584 # ifdef _LIBC
 585       __libc_rwlock_unlock (__libc_setlocale_lock);
 586 # endif
 587       __set_errno (saved_errno);
 588       return retval;
 589     }
 590 #endif
 591
 592   /* See whether this is a SUID binary or not.  */
 593   DETERMINE_SECURE;
 594
 595   /* First find matching binding.  */
 596 #ifdef IN_LIBGLOCALE
 597   /* We can use a trivial binding, since _nl_find_msg will ignore it anyway,
 598      and _nl_load_domain and _nl_find_domain just pass it through.  */
 599   binding = NULL;
 600   dirname = bindtextdomain (domainname, NULL);
 601 #else
 602   for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next)
 603     {
 604       int compare = strcmp (domainname, binding->domainname);
 605       if (compare == 0)
 606         /* We found it!  */
 607         break;
 608       if (compare < 0)
 609         {
 610           /* It is not in the list.  */
 611           binding = NULL;
 612           break;
 613         }
 614     }
 615
 616   if (binding == NULL)
 617     dirname = _nl_default_dirname;
 618   else
 619     {
 620       dirname = binding->dirname;
 621 #endif
 622       if (!IS_ABSOLUTE_PATH (dirname))
 623         {
 624           /* We have a relative path.  Make it absolute now.  */
 625           char *cwd = getcwd (NULL, 0);
 626           if (cwd == NULL)
 627             /* We cannot get the current working directory.  Don't
 628                signal an error but simply return the default
 629                string.  */
 630             goto return_untranslated;
 631           int ret = __asprintf (&xdirname, "%s/%s", cwd, dirname);
 632           free (cwd);
 633           if (ret < 0)
 634               return NULL;
 635           dirname = xdirname;
 636         }
 637 #ifndef IN_LIBGLOCALE
 638     }
 639 #endif
 640
 641   /* Now determine the symbolic name of CATEGORY and its value.  */
 642 #ifndef CATEGORYNAME_INITIALIZED
 643   categoryname = category_to_name (category);
 644 #endif
 645 #ifdef IN_LIBGLOCALE
 646   categoryvalue = guess_category_value (category, categoryname, localename);
 647 #else
 648   categoryvalue = guess_category_value (category, categoryname);
 649 #endif
 650
 651   domainname_len = strlen (domainname);
 652   xdomainname = (char *) alloca (strlen (categoryname)
 653                                  + domainname_len + 5);
 654   ADD_BLOCK (block_list, xdomainname);
 655
 656   stpcpy ((char *) mempcpy (stpcpy (stpcpy (xdomainname, categoryname), "/"),
 657                             domainname, domainname_len),
 658           ".mo");
 659
 660   /* Creating working area.  */
 661   single_locale = (char *) alloca (strlen (categoryvalue) + 1);
 662   ADD_BLOCK (block_list, single_locale);
 663
 664
 665   /* Search for the given string.  This is a loop because we perhaps
 666      got an ordered list of languages to consider for the translation.  */
 667   while (1)
 668     {
 669       /* Make CATEGORYVALUE point to the next element of the list.  */
 670       while (categoryvalue[0] != '\0' && categoryvalue[0] == ':')
 671         ++categoryvalue;
 672       if (categoryvalue[0] == '\0')
 673         {
 674           /* The whole contents of CATEGORYVALUE has been searched but
 675              no valid entry has been found.  We solve this situation
 676              by implicitly appending a "C" entry, i.e. no translation
 677              will take place.  */
 678           single_locale[0] = 'C';
 679           single_locale[1] = '\0';
 680         }
 681       else
 682         {
 683           char *cp = single_locale;
 684           while (categoryvalue[0] != '\0' && categoryvalue[0] != ':')
 685             *cp++ = *categoryvalue++;
 686           *cp = '\0';
 687
 688           /* When this is a SUID binary we must not allow accessing files
 689              outside the dedicated directories.  */
 690           if (ENABLE_SECURE && IS_PATH_WITH_DIR (single_locale))
 691             /* Ingore this entry.  */
 692             continue;
 693         }
 694
 695       /* If the current locale value is C (or POSIX) we don't load a
 696          domain.  Return the MSGID.  */
 697       if (strcmp (single_locale, "C") == 0
 698           || strcmp (single_locale, "POSIX") == 0)
 699         break;
 700
 701       /* Find structure describing the message catalog matching the
 702          DOMAINNAME and CATEGORY.  */
 703       domain = _nl_find_domain (dirname, single_locale, xdomainname, binding);
 704
 705       if (domain != NULL)
 706         {
 707 #if defined IN_LIBGLOCALE
 708           retval = _nl_find_msg (domain, binding, encoding, msgid1, &retlen);
 709 #else
 710           retval = _nl_find_msg (domain, binding, msgid1, 1, &retlen);
 711 #endif
 712
 713           if (retval == NULL)
 714             {
 715               int cnt;
 716
 717               for (cnt = 0; domain->successor[cnt] != NULL; ++cnt)
 718                 {
 719 #if defined IN_LIBGLOCALE
 720                   retval = _nl_find_msg (domain->successor[cnt], binding,
 721                                          encoding, msgid1, &retlen);
 722 #else
 723                   retval = _nl_find_msg (domain->successor[cnt], binding,
 724                                          msgid1, 1, &retlen);
 725 #endif
 726
 727                   /* Resource problems are not fatal, instead we return no
 728                      translation.  */
 729                   if (__builtin_expect (retval == (char *) -1, 0))
 730                     goto return_untranslated;
 731
 732                   if (retval != NULL)
 733                     {
 734                       domain = domain->successor[cnt];
 735                       break;
 736                     }
 737                 }
 738             }
 739
 740           /* Returning -1 means that some resource problem exists
 741              (likely memory) and that the strings could not be
 742              converted.  Return the original strings.  */
 743           if (__builtin_expect (retval == (char *) -1, 0))
 744             break;
 745
 746           if (retval != NULL)
 747             {
 748               /* Found the translation of MSGID1 in domain DOMAIN:
 749                  starting at RETVAL, RETLEN bytes.  */
 750               free (xdirname);
 751               FREE_BLOCKS (block_list);
 752               if (foundp == NULL)
 753                 {
 754                   /* Create a new entry and add it to the search tree.  */
 755                   size_t msgid_len;
 756                   size_t size;
 757                   struct known_translation_t *newp;
 758
 759                   msgid_len = strlen (msgid1) + 1;
 760                   size = offsetof (struct known_translation_t, msgid)
 761                          + msgid_len + domainname_len + 1;
 762 #ifdef HAVE_PER_THREAD_LOCALE
 763                   size += strlen (localename) + 1;
 764 #endif
 765                   newp = (struct known_translation_t *) malloc (size);
 766                   if (newp != NULL)
 767                     {
 768                       char *new_domainname;
 769 #ifdef HAVE_PER_THREAD_LOCALE
 770                       char *new_localename;
 771 #endif
 772
 773                       new_domainname =
 774                         (char *) mempcpy (newp->msgid.appended, msgid1,
 775                                           msgid_len);
 776                       memcpy (new_domainname, domainname, domainname_len + 1);
 777 #ifdef HAVE_PER_THREAD_LOCALE
 778                       new_localename = new_domainname + domainname_len + 1;
 779                       strcpy (new_localename, localename);
 780 #endif
 781                       newp->domainname = new_domainname;
 782                       newp->category = category;
 783 #ifdef HAVE_PER_THREAD_LOCALE
 784                       newp->localename = new_localename;
 785 #endif
 786 #ifdef IN_LIBGLOCALE
 787                       newp->encoding = encoding;
 788 #endif
 789                       newp->counter = _nl_msg_cat_cntr;
 790                       newp->domain = domain;
 791                       newp->translation = retval;
 792                       newp->translation_length = retlen;
 793
 794                       gl_rwlock_wrlock (tree_lock);
 795
 796                       /* Insert the entry in the search tree.  */
 797                       foundp = (struct known_translation_t **)
 798                         tsearch (newp, &root, transcmp);
 799
 800                       gl_rwlock_unlock (tree_lock);
 801
 802                       if (foundp == NULL
 803                           || __builtin_expect (*foundp != newp, 0))
 804                         /* The insert failed.  */
 805                         free (newp);
 806                     }
 807                 }
 808               else
 809                 {
 810                   /* We can update the existing entry.  */
 811                   (*foundp)->counter = _nl_msg_cat_cntr;
 812                   (*foundp)->domain = domain;
 813                   (*foundp)->translation = retval;
 814                   (*foundp)->translation_length = retlen;
 815                 }
 816
 817               __set_errno (saved_errno);
 818
 819               /* Now deal with plural.  */
 820               if (plural)
 821                 retval = plural_lookup (domain, n, retval, retlen);
 822
 823               gl_rwlock_unlock (_nl_state_lock);
 824 #ifdef _LIBC
 825               __libc_rwlock_unlock (__libc_setlocale_lock);
 826 #endif
 827               return retval;
 828             }
 829         }
 830     }
 831
 832  return_untranslated:
 833   /* Return the untranslated MSGID.  */
 834   free (xdirname);
 835   FREE_BLOCKS (block_list);
 836   gl_rwlock_unlock (_nl_state_lock);
 837 #ifdef _LIBC
 838   __libc_rwlock_unlock (__libc_setlocale_lock);
 839 #endif
 840 #ifndef _LIBC
 841   if (!ENABLE_SECURE)
 842     {
 843       extern void _nl_log_untranslated (const char *logfilename,
 844                                         const char *domainname,
 845                                         const char *msgid1, const char *msgid2,
 846                                         int plural);
 847       const char *logfilename = getenv ("GETTEXT_LOG_UNTRANSLATED");
 848
 849       if (logfilename != NULL && logfilename[0] != '\0')
 850         _nl_log_untranslated (logfilename, domainname, msgid1, msgid2, plural);
 851     }
 852 #endif
 853   __set_errno (saved_errno);
 854   return (plural == 0
 855           ? (char *) msgid1
 856           /* Use the Germanic plural rule.  */
 857           : n == 1 ? (char *) msgid1 : (char *) msgid2);
 858 }
 859
 860
 861 /* Look up the translation of msgid within DOMAIN_FILE and DOMAINBINDING.
 862    Return it if found.  Return NULL if not found or in case of a conversion
 863    failure (problem in the particular message catalog).  Return (char *) -1
 864    in case of a memory allocation failure during conversion (only if
 865    ENCODING != NULL resp. CONVERT == true).  */
 866 char *
 867 #ifdef IN_LIBGLOCALE
 868 _nl_find_msg (struct loaded_l10nfile *domain_file,
 869               struct binding *domainbinding, const char *encoding,
 870               const char *msgid,
 871               size_t *lengthp)
 872 #else
 873 _nl_find_msg (struct loaded_l10nfile *domain_file,
 874               struct binding *domainbinding,
 875               const char *msgid, int convert,
 876               size_t *lengthp)
 877 #endif
 878 {
 879   struct loaded_domain *domain;
 880   nls_uint32 nstrings;
 881   size_t act;
 882   char *result;
 883   size_t resultlen;
 884
 885   if (domain_file->decided <= 0)
 886     _nl_load_domain (domain_file, domainbinding);
 887
 888   if (domain_file->data == NULL)
 889     return NULL;
 890
 891   domain = (struct loaded_domain *) domain_file->data;
 892
 893   nstrings = domain->nstrings;
 894
 895   /* Locate the MSGID and its translation.  */
 896   if (domain->hash_tab != NULL)
 897     {
 898       /* Use the hashing table.  */
 899       nls_uint32 len = strlen (msgid);
 900       nls_uint32 hash_val = __hash_string (msgid);
 901       nls_uint32 idx = hash_val % domain->hash_size;
 902       nls_uint32 incr = 1 + (hash_val % (domain->hash_size - 2));
 903
 904       while (1)
 905         {
 906           nls_uint32 nstr =
 907             W (domain->must_swap_hash_tab, domain->hash_tab[idx]);
 908
 909           if (nstr == 0)
 910             /* Hash table entry is empty.  */
 911             return NULL;
 912
 913           nstr--;
 914
 915           /* Compare msgid with the original string at index nstr.
 916              We compare the lengths with >=, not ==, because plural entries
 917              are represented by strings with an embedded NUL.  */
 918           if (nstr < nstrings
 919               ? W (domain->must_swap, domain->orig_tab[nstr].length) >= len
 920                 && (strcmp (msgid,
 921                             domain->data + W (domain->must_swap,
 922                                               domain->orig_tab[nstr].offset))
 923                     == 0)
 924               : domain->orig_sysdep_tab[nstr - nstrings].length > len
 925                 && (strcmp (msgid,
 926                             domain->orig_sysdep_tab[nstr - nstrings].pointer)
 927                     == 0))
 928             {
 929               act = nstr;
 930               goto found;
 931             }
 932
 933           if (idx >= domain->hash_size - incr)
 934             idx -= domain->hash_size - incr;
 935           else
 936             idx += incr;
 937         }
 938       /* NOTREACHED */
 939     }
 940   else
 941     {
 942       /* Try the default method:  binary search in the sorted array of
 943          messages.  */
 944       size_t top, bottom;
 945
 946       bottom = 0;
 947       top = nstrings;
 948       while (bottom < top)
 949         {
 950           int cmp_val;
 951
 952           act = (bottom + top) / 2;
 953           cmp_val = strcmp (msgid, (domain->data
 954                                     + W (domain->must_swap,
 955                                          domain->orig_tab[act].offset)));
 956           if (cmp_val < 0)
 957             top = act;
 958           else if (cmp_val > 0)
 959             bottom = act + 1;
 960           else
 961             goto found;
 962         }
 963       /* No translation was found.  */
 964       return NULL;
 965     }
 966
 967  found:
 968   /* The translation was found at index ACT.  If we have to convert the
 969      string to use a different character set, this is the time.  */
 970   if (act < nstrings)
 971     {
 972       result = (char *)
 973         (domain->data + W (domain->must_swap, domain->trans_tab[act].offset));
 974       resultlen = W (domain->must_swap, domain->trans_tab[act].length) + 1;
 975     }
 976   else
 977     {
 978       result = (char *) domain->trans_sysdep_tab[act - nstrings].pointer;
 979       resultlen = domain->trans_sysdep_tab[act - nstrings].length;
 980     }
 981
 982 #if defined _LIBC || HAVE_ICONV
 983 # ifdef IN_LIBGLOCALE
 984   if (encoding != NULL)
 985 # else
 986   if (convert)
 987 # endif
 988     {
 989       /* We are supposed to do a conversion.  */
 990 # ifndef IN_LIBGLOCALE
 991       const char *encoding = get_output_charset (domainbinding);
 992 # endif
 993       size_t nconversions;
 994       struct converted_domain *convd;
 995       size_t i;
 996
 997       /* Protect against reallocation of the table.  */
 998       gl_rwlock_rdlock (domain->conversions_lock);
 999
1000       /* Search whether a table with converted translations for this
1001          encoding has already been allocated.  */
1002       nconversions = domain->nconversions;
1003       convd = NULL;
1004
1005       for (i = nconversions; i > 0; )
1006         {
1007           i--;
1008           if (strcmp (domain->conversions[i].encoding, encoding) == 0)
1009             {
1010               convd = &domain->conversions[i];
1011               break;
1012             }
1013         }
1014
1015       gl_rwlock_unlock (domain->conversions_lock);
1016
1017       if (convd == NULL)
1018         {
1019           /* We have to allocate a new conversions table.  */
1020           gl_rwlock_wrlock (domain->conversions_lock);
1021           nconversions = domain->nconversions;
1022
1023           /* Maybe in the meantime somebody added the translation.
1024              Recheck.  */
1025           for (i = nconversions; i > 0; )
1026             {
1027               i--;
1028               if (strcmp (domain->conversions[i].encoding, encoding) == 0)
1029                 {
1030                   convd = &domain->conversions[i];
1031                   goto found_convd;
1032                 }
1033             }
1034
1035           {
1036             /* Allocate a table for the converted translations for this
1037                encoding.  */
1038             struct converted_domain *new_conversions =
1039               (struct converted_domain *)
1040               (domain->conversions != NULL
1041                ? realloc (domain->conversions,
1042                           (nconversions + 1) * sizeof (struct converted_domain))
1043                : malloc ((nconversions + 1) * sizeof (struct converted_domain)));
1044
1045             if (__builtin_expect (new_conversions == NULL, 0))
1046               {
1047                 /* Nothing we can do, no more memory.  We cannot use the
1048                    translation because it might be encoded incorrectly.  */
1049               unlock_fail:
1050                 gl_rwlock_unlock (domain->conversions_lock);
1051                 return (char *) -1;
1052               }
1053
1054             domain->conversions = new_conversions;
1055
1056             /* Copy the 'encoding' string to permanent storage.  */
1057             encoding = strdup (encoding);
1058             if (__builtin_expect (encoding == NULL, 0))
1059               /* Nothing we can do, no more memory.  We cannot use the
1060                  translation because it might be encoded incorrectly.  */
1061               goto unlock_fail;
1062
1063             convd = &new_conversions[nconversions];
1064             convd->encoding = encoding;
1065
1066             /* Find out about the character set the file is encoded with.
1067                This can be found (in textual form) in the entry "".  If this
1068                entry does not exist or if this does not contain the 'charset='
1069                information, we will assume the charset matches the one the
1070                current locale and we don't have to perform any conversion.  */
1071 # ifdef _LIBC
1072             convd->conv = (__gconv_t) -1;
1073 # else
1074 #  if HAVE_ICONV
1075             convd->conv = (iconv_t) -1;
1076 #  endif
1077 # endif
1078             {
1079               char *nullentry;
1080               size_t nullentrylen;
1081
1082               /* Get the header entry.  This is a recursion, but it doesn't
1083                  reallocate domain->conversions because we pass
1084                  encoding = NULL or convert = 0, respectively.  */
1085               nullentry =
1086 # ifdef IN_LIBGLOCALE
1087                 _nl_find_msg (domain_file, domainbinding, NULL, "",
1088                               &nullentrylen);
1089 # else
1090                 _nl_find_msg (domain_file, domainbinding, "", 0, &nullentrylen);
1091 # endif
1092
1093               /* Resource problems are fatal.  If we continue onwards we will
1094                  only attempt to calloc a new conv_tab and fail later.  */
1095               if (__builtin_expect (nullentry == (char *) -1, 0))
1096                 return (char *) -1;
1097
1098               if (nullentry != NULL)
1099                 {
1100                   const char *charsetstr;
1101
1102                   charsetstr = strstr (nullentry, "charset=");
1103                   if (charsetstr != NULL)
1104                     {
1105                       size_t len;
1106                       char *charset;
1107                       const char *outcharset;
1108
1109                       charsetstr += strlen ("charset=");
1110                       len = strcspn (charsetstr, " \t\n");
1111
1112                       charset = (char *) alloca (len + 1);
1113 # if defined _LIBC || HAVE_MEMPCPY
1114                       *((char *) mempcpy (charset, charsetstr, len)) = '\0';
1115 # else
1116                       memcpy (charset, charsetstr, len);
1117                       charset[len] = '\0';
1118 # endif
1119
1120                       outcharset = encoding;
1121
1122 # ifdef _LIBC
1123                       /* We always want to use transliteration.  */
1124                       outcharset = norm_add_slashes (outcharset, "TRANSLIT");
1125                       charset = norm_add_slashes (charset, "");
1126                       int r = __gconv_open (outcharset, charset, &convd->conv,
1127                                             GCONV_AVOID_NOCONV);
1128                       if (__builtin_expect (r != __GCONV_OK, 0))
1129                         {
1130                           /* If the output encoding is the same there is
1131                              nothing to do.  Otherwise do not use the
1132                              translation at all.  */
1133                           if (__builtin_expect (r != __GCONV_NULCONV, 1))
1134                             {
1135                               gl_rwlock_unlock (domain->conversions_lock);
1136                               free ((char *) encoding);
1137                               return NULL;
1138                             }
1139
1140                           convd->conv = (__gconv_t) -1;
1141                         }
1142 # else
1143 #  if HAVE_ICONV
1144                       /* When using GNU libc >= 2.2 or GNU libiconv >= 1.5,
1145                          we want to use transliteration.  */
1146 #   if (((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) || __GLIBC__ > 2) \
1147         && !defined __UCLIBC__) \
1148        || _LIBICONV_VERSION >= 0x0105
1149                       if (strchr (outcharset, '/') == NULL)
1150                         {
1151                           char *tmp;
1152
1153                           len = strlen (outcharset);
1154                           tmp = (char *) alloca (len + 10 + 1);
1155                           memcpy (tmp, outcharset, len);
1156                           memcpy (tmp + len, "//TRANSLIT", 10 + 1);
1157                           outcharset = tmp;
1158
1159                           convd->conv = iconv_open (outcharset, charset);
1160
1161                           freea (outcharset);
1162                         }
1163                       else
1164 #   endif
1165                         convd->conv = iconv_open (outcharset, charset);
1166 #  endif
1167 # endif
1168
1169                       freea (charset);
1170                     }
1171                 }
1172             }
1173             convd->conv_tab = NULL;
1174             /* Here domain->conversions is still == new_conversions.  */
1175             domain->nconversions++;
1176           }
1177
1178         found_convd:
1179           gl_rwlock_unlock (domain->conversions_lock);
1180         }
1181
1182       if (
1183 # ifdef _LIBC
1184           convd->conv != (__gconv_t) -1
1185 # else
1186 #  if HAVE_ICONV
1187           convd->conv != (iconv_t) -1
1188 #  endif
1189 # endif
1190           )
1191         {
1192           /* We are supposed to do a conversion.  First allocate an
1193              appropriate table with the same structure as the table
1194              of translations in the file, where we can put the pointers
1195              to the converted strings in.
1196              There is a slight complication with plural entries.  They
1197              are represented by consecutive NUL terminated strings.  We
1198              handle this case by converting RESULTLEN bytes, including
1199              NULs.  */
1200
1201           /* This lock primarily protects the memory management variables
1202              freemem, freemem_size.  It also protects write accesses to
1203              convd->conv_tab.  It's not worth using a separate lock (such
1204              as domain->conversions_lock) for this purpose, because when
1205              modifying convd->conv_tab, we also need to lock freemem,
1206              freemem_size for most of the time.  */
1207           __libc_lock_define_initialized (static, lock)
1208
1209           if (__builtin_expect (convd->conv_tab == NULL, 0))
1210             {
1211               __libc_lock_lock (lock);
1212               if (convd->conv_tab == NULL)
1213                 {
1214                   convd->conv_tab =
1215                     (char **) calloc (nstrings + domain->n_sysdep_strings,
1216                                       sizeof (char *));
1217                   if (convd->conv_tab != NULL)
1218                     goto not_translated_yet;
1219                   /* Mark that we didn't succeed allocating a table.  */
1220                   convd->conv_tab = (char **) -1;
1221                 }
1222               __libc_lock_unlock (lock);
1223             }
1224
1225           if (__builtin_expect (convd->conv_tab == (char **) -1, 0))
1226             /* Nothing we can do, no more memory.  We cannot use the
1227                translation because it might be encoded incorrectly.  */
1228             return (char *) -1;
1229
1230           if (convd->conv_tab[act] == NULL)
1231             {
1232               /* We haven't used this string so far, so it is not
1233                  translated yet.  Do this now.  */
1234               /* We use a bit more efficient memory handling.
1235                  We allocate always larger blocks which get used over
1236                  time.  This is faster than many small allocations.   */
1237 # define INITIAL_BLOCK_SIZE     4080
1238               static unsigned char *freemem;
1239               static size_t freemem_size;
1240
1241               const unsigned char *inbuf;
1242               unsigned char *outbuf;
1243               int malloc_count;
1244 # ifndef _LIBC
1245               transmem_block_t *transmem_list;
1246 # endif
1247
1248               __libc_lock_lock (lock);
1249             not_translated_yet:
1250
1251               inbuf = (const unsigned char *) result;
1252               outbuf = freemem + sizeof (size_t);
1253 # ifndef _LIBC
1254               transmem_list = NULL;
1255 # endif
1256
1257               malloc_count = 0;
1258               while (1)
1259                 {
1260                   transmem_block_t *newmem;
1261 # ifdef _LIBC
1262                   size_t non_reversible;
1263                   int res;
1264
1265                   if (freemem_size < sizeof (size_t))
1266                     goto resize_freemem;
1267
1268                   res = __gconv (convd->conv,
1269                                  &inbuf, inbuf + resultlen,
1270                                  &outbuf,
1271                                  outbuf + freemem_size - sizeof (size_t),
1272                                  &non_reversible);
1273
1274                   if (res == __GCONV_OK || res == __GCONV_EMPTY_INPUT)
1275                     break;
1276
1277                   if (res != __GCONV_FULL_OUTPUT)
1278                     {
1279                       /* We should not use the translation at all, it
1280                          is incorrectly encoded.  */
1281                       __libc_lock_unlock (lock);
1282                       return NULL;
1283                     }
1284
1285                   inbuf = (const unsigned char *) result;
1286 # else
1287 #  if HAVE_ICONV
1288                   const char *inptr = (const char *) inbuf;
1289                   size_t inleft = resultlen;
1290                   char *outptr = (char *) outbuf;
1291                   size_t outleft;
1292
1293                   if (freemem_size < sizeof (size_t))
1294                     goto resize_freemem;
1295
1296                   outleft = freemem_size - sizeof (size_t);
1297                   if (iconv (convd->conv,
1298                              (ICONV_CONST char **) &inptr, &inleft,
1299                              &outptr, &outleft)
1300                       != (size_t) (-1))
1301                     {
1302                       outbuf = (unsigned char *) outptr;
1303                       break;
1304                     }
1305                   if (errno != E2BIG)
1306                     {
1307                       __libc_lock_unlock (lock);
1308                       return NULL;
1309                     }
1310 #  endif
1311 # endif
1312
1313                 resize_freemem:
1314                   /* We must allocate a new buffer or resize the old one.  */
1315                   if (malloc_count > 0)
1316                     {
1317                       ++malloc_count;
1318                       freemem_size = malloc_count * INITIAL_BLOCK_SIZE;
1319                       newmem = (transmem_block_t *) realloc (transmem_list,
1320                                                              freemem_size);
1321 # ifdef _LIBC
1322                       if (newmem != NULL)
1323                         transmem_list = newmem;
1324                       else
1325                         {
1326                           struct transmem_list *old = transmem_list;
1327
1328                           transmem_list = transmem_list->next;
1329                           free (old);
1330                         }
1331 # endif
1332                     }
1333                   else
1334                     {
1335                       malloc_count = 1;
1336                       freemem_size = INITIAL_BLOCK_SIZE;
1337                       newmem = (transmem_block_t *) malloc (freemem_size);
1338 # ifdef _LIBC
1339                       if (newmem != NULL)
1340                         {
1341                           /* Add the block to the list of blocks we have to free
1342                              at some point.  */
1343                           newmem->next = transmem_list;
1344                           transmem_list = newmem;
1345                         }
1346                       /* Fall through and return -1.  */
1347 # endif
1348                     }
1349                   if (__builtin_expect (newmem == NULL, 0))
1350                     {
1351                       freemem = NULL;
1352                       freemem_size = 0;
1353                       __libc_lock_unlock (lock);
1354                       return (char *) -1;
1355                     }
1356
1357 # ifdef _LIBC
1358                   freemem = (unsigned char *) newmem->data;
1359                   freemem_size -= offsetof (struct transmem_list, data);
1360 # else
1361                   transmem_list = newmem;
1362                   freemem = newmem;
1363 # endif
1364
1365                   outbuf = freemem + sizeof (size_t);
1366                 }
1367
1368               /* We have now in our buffer a converted string.  Put this
1369                  into the table of conversions.  */
1370               *(size_t *) freemem = outbuf - freemem - sizeof (size_t);
1371               convd->conv_tab[act] = (char *) freemem;
1372               /* Shrink freemem, but keep it aligned.  */
1373               freemem_size -= outbuf - freemem;
1374               freemem = outbuf;
1375               freemem += freemem_size & (alignof (size_t) - 1);
1376               freemem_size = freemem_size & ~ (alignof (size_t) - 1);
1377
1378               __libc_lock_unlock (lock);
1379             }
1380
1381           /* Now convd->conv_tab[act] contains the translation of all
1382              the plural variants.  */
1383           result = convd->conv_tab[act] + sizeof (size_t);
1384           resultlen = *(size_t *) convd->conv_tab[act];
1385         }
1386     }
1387
1388   /* The result string is converted.  */
1389
1390 #endif /* _LIBC || HAVE_ICONV */
1391
1392   *lengthp = resultlen;
1393   return result;
1394 }
1395
1396
1397 /* Look up a plural variant.  */
1398 static char *
1399 plural_lookup (struct loaded_l10nfile *domain, unsigned long int n,
1400                const char *translation, size_t translation_len)
1401 {
1402   struct loaded_domain *domaindata = (struct loaded_domain *) domain->data;
1403   unsigned long int index;
1404   const char *p;
1405
1406   index = plural_eval (domaindata->plural, n);
1407   if (index >= domaindata->nplurals)
1408     /* This should never happen.  It means the plural expression and the
1409        given maximum value do not match.  */
1410     index = 0;
1411
1412   /* Skip INDEX strings at TRANSLATION.  */
1413   p = translation;
1414   while (index-- > 0)
1415     {
1416 #ifdef _LIBC
1417       p = __rawmemchr (p, '\0');
1418 #else
1419       p = strchr (p, '\0');
1420 #endif
1421       /* And skip over the NUL byte.  */
1422       p++;
1423
1424       if (p >= translation + translation_len)
1425         /* This should never happen.  It means the plural expression
1426            evaluated to a value larger than the number of variants
1427            available for MSGID1.  */
1428         return (char *) translation;
1429     }
1430   return (char *) p;
1431 }
1432
1433 #ifndef _LIBC
1434 /* Return string representation of locale CATEGORY.  */
1435 static const char *
1436 category_to_name (int category)
1437 {
1438   const char *retval;
1439
1440   switch (category)
1441   {
1442 #ifdef LC_COLLATE
1443   case LC_COLLATE:
1444     retval = "LC_COLLATE";
1445     break;
1446 #endif
1447 #ifdef LC_CTYPE
1448   case LC_CTYPE:
1449     retval = "LC_CTYPE";
1450     break;
1451 #endif
1452 #ifdef LC_MONETARY
1453   case LC_MONETARY:
1454     retval = "LC_MONETARY";
1455     break;
1456 #endif
1457 #ifdef LC_NUMERIC
1458   case LC_NUMERIC:
1459     retval = "LC_NUMERIC";
1460     break;
1461 #endif
1462 #ifdef LC_TIME
1463   case LC_TIME:
1464     retval = "LC_TIME";
1465     break;
1466 #endif
1467 #ifdef LC_MESSAGES
1468   case LC_MESSAGES:
1469     retval = "LC_MESSAGES";
1470     break;
1471 #endif
1472 #ifdef LC_RESPONSE
1473   case LC_RESPONSE:
1474     retval = "LC_RESPONSE";
1475     break;
1476 #endif
1477 #ifdef LC_ALL
1478   case LC_ALL:
1479     /* This might not make sense but is perhaps better than any other
1480        value.  */
1481     retval = "LC_ALL";
1482     break;
1483 #endif
1484   default:
1485     /* If you have a better idea for a default value let me know.  */
1486     retval = "LC_XXX";
1487   }
1488
1489   return retval;
1490 }
1491 #endif
1492
1493 /* Guess value of current locale from value of the environment variables
1494    or system-dependent defaults.  */
1495 static const char *
1496 #ifdef IN_LIBGLOCALE
1497 guess_category_value (int category, const char *categoryname,
1498                       const char *locale)
1499
1500 #else
1501 guess_category_value (int category, const char *categoryname)
1502 #endif
1503 {
1504   const char *language;
1505 #ifndef IN_LIBGLOCALE
1506   const char *locale;
1507 # ifndef _LIBC
1508   const char *language_default;
1509   int locale_defaulted;
1510 # endif
1511 #endif
1512
1513   /* We use the settings in the following order:
1514      1. The value of the environment variable 'LANGUAGE'.  This is a GNU
1515         extension.  Its value can be a colon-separated list of locale names.
1516      2. The value of the environment variable 'LC_ALL', 'LC_xxx', or 'LANG'.
1517         More precisely, the first among these that is set to a non-empty value.
1518         This is how POSIX specifies it.  The value is a single locale name.
1519      3. A system-dependent preference list of languages.  Its value can be a
1520         colon-separated list of locale names.
1521      4. A system-dependent default locale name.
1522      This way:
1523        - System-dependent settings can be overridden by environment variables.
1524        - If the system provides both a list of languages and a default locale,
1525          the former is used.  */
1526
1527 #ifndef IN_LIBGLOCALE
1528   /* Fetch the locale name, through the POSIX method of looking to `LC_ALL',
1529      `LC_xxx', and `LANG'.  On some systems this can be done by the
1530      `setlocale' function itself.  */
1531 # ifdef _LIBC
1532   locale = __current_locale_name (category);
1533 # else
1534   locale_defaulted = 0;
1535 #  if HAVE_USELOCALE
1536   locale = _nl_locale_name_thread_unsafe (category, categoryname);
1537   if (locale == NULL)
1538 #  endif
1539     {
1540       locale = _nl_locale_name_posix (category, categoryname);
1541       if (locale == NULL)
1542         {
1543           locale = _nl_locale_name_default ();
1544           locale_defaulted = 1;
1545         }
1546     }
1547 # endif
1548 #endif
1549
1550   /* Ignore LANGUAGE and its system-dependent analogon if the locale is set
1551      to "C" because
1552      1. "C" locale usually uses the ASCII encoding, and most international
1553         messages use non-ASCII characters. These characters get displayed
1554         as question marks (if using glibc's iconv()) or as invalid 8-bit
1555         characters (because other iconv()s refuse to convert most non-ASCII
1556         characters to ASCII). In any case, the output is ugly.
1557      2. The precise output of some programs in the "C" locale is specified
1558         by POSIX and should not depend on environment variables like
1559         "LANGUAGE" or system-dependent information.  We allow such programs
1560         to use gettext().  */
1561   if (strcmp (locale, "C") == 0)
1562     return locale;
1563
1564   /* The highest priority value is the value of the 'LANGUAGE' environment
1565      variable.  */
1566   language = getenv ("LANGUAGE");
1567   if (language != NULL && language[0] != '\0')
1568     return language;
1569 #if !defined IN_LIBGLOCALE && !defined _LIBC
1570   /* The next priority value is the locale name, if not defaulted.  */
1571   if (locale_defaulted)
1572     {
1573       /* The next priority value is the default language preferences list. */
1574       language_default = _nl_language_preferences_default ();
1575       if (language_default != NULL)
1576         return language_default;
1577     }
1578   /* The least priority value is the locale name, if defaulted.  */
1579 #endif
1580   return locale;
1581 }
1582
1583 #if (defined _LIBC || HAVE_ICONV) && !defined IN_LIBGLOCALE
1584 /* Returns the output charset.  */
1585 static const char *
1586 get_output_charset (struct binding *domainbinding)
1587 {
1588   /* The output charset should normally be determined by the locale.  But
1589      sometimes the locale is not used or not correctly set up, so we provide
1590      a possibility for the user to override this: the OUTPUT_CHARSET
1591      environment variable.  Moreover, the value specified through
1592      bind_textdomain_codeset overrides both.  */
1593   if (domainbinding != NULL && domainbinding->codeset != NULL)
1594     return domainbinding->codeset;
1595   else
1596     {
1597       /* For speed reasons, we look at the value of OUTPUT_CHARSET only
1598          once.  This is a user variable that is not supposed to change
1599          during a program run.  */
1600       static char *output_charset_cache;
1601       static int output_charset_cached;
1602
1603       if (!output_charset_cached)
1604         {
1605           const char *value = getenv ("OUTPUT_CHARSET");
1606
1607           if (value != NULL && value[0] != '\0')
1608             {
1609               size_t len = strlen (value) + 1;
1610               char *value_copy = (char *) malloc (len);
1611
1612               if (value_copy != NULL)
1613                 memcpy (value_copy, value, len);
1614               output_charset_cache = value_copy;
1615             }
1616           output_charset_cached = 1;
1617         }
1618
1619       if (output_charset_cache != NULL)
1620         return output_charset_cache;
1621       else
1622         {
1623 # ifdef _LIBC
1624           return _NL_CURRENT (LC_CTYPE, CODESET);
1625 # else
1626 #  if HAVE_ICONV
1627           return locale_charset ();
1628 #  endif
1629 # endif
1630         }
1631     }
1632 }
1633 #endif
1634
1635 /* @@ begin of epilog @@ */
1636
1637 /* We don't want libintl.a to depend on any other library.  So we
1638    avoid the non-standard function stpcpy.  In GNU C Library this
1639    function is available, though.  Also allow the symbol HAVE_STPCPY
1640    to be defined.  */
1641 #if !_LIBC && !HAVE_STPCPY
1642 static char *
1643 stpcpy (char *dest, const char *src)
1644 {
1645   while ((*dest++ = *src++) != '\0')
1646     /* Do nothing. */ ;
1647   return dest - 1;
1648 }
1649 #endif
1650
1651 #if !_LIBC && !HAVE_MEMPCPY
1652 static void *
1653 mempcpy (void *dest, const void *src, size_t n)
1654 {
1655   return (void *) ((char *) memcpy (dest, src, n) + n);
1656 }
1657 #endif
1658
1659 #if !_LIBC && !HAVE_TSEARCH
1660 # include "tsearch.c"
1661 #endif
1662
1663
1664 #ifdef _LIBC
1665 /* If we want to free all resources we have to do some work at
1666    program's end.  */
1667 libc_freeres_fn (free_mem)
1668 {
1669   void *old;
1670
1671   while (_nl_domain_bindings != NULL)
1672     {
1673       struct binding *oldp = _nl_domain_bindings;
1674       _nl_domain_bindings = _nl_domain_bindings->next;
1675       if (oldp->dirname != _nl_default_dirname)
1676         /* Yes, this is a pointer comparison.  */
1677         free (oldp->dirname);
1678       free (oldp->codeset);
1679       free (oldp);
1680     }
1681
1682   if (_nl_current_default_domain != _nl_default_default_domain)
1683     /* Yes, again a pointer comparison.  */
1684     free ((char *) _nl_current_default_domain);
1685
1686   /* Remove the search tree with the known translations.  */
1687   __tdestroy (root, free);
1688   root = NULL;
1689
1690   while (transmem_list != NULL)
1691     {
1692       old = transmem_list;
1693       transmem_list = transmem_list->next;
1694       free (old);
1695     }
1696 }
1697 #endif