php-systzdata.patch

   1 Add support for use of the system timezone database, rather
   2 than embedding a copy.  Discussed upstream but was not desired.
   3
   4 History:
   5 r12: adapt for upstream changes for new zic
   6 r11: use canonical names to avoid more case sensitivity issues
   7      round lat/long from zone.tab towards zero per builtin db
   8 r10: make timezone case insensitive
   9 r9: fix another compile error without --with-system-tzdata configured (Michael Heimpold)
  10 r8: fix compile error without --with-system-tzdata configured
  11 r7: improve check for valid timezone id to exclude directories
  12 r6: fix fd leak in r5, fix country code/BC flag use in
  13     timezone_identifiers_list() using system db,
  14     fix use of PECL timezonedb to override system db,
  15 r5: reverts addition of "System/Localtime" fake tzname.
  16     updated for 5.3.0, parses zone.tab to pick up mapping between
  17     timezone name, country code and long/lat coords
  18 r4: added "System/Localtime" tzname which uses /etc/localtime
  19 r3: fix a crash if /usr/share/zoneinfo doesn't exist (Raphael Geissert)
  20 r2: add filesystem trawl to set up name alias index
  21 r1: initial revision
  22
  23 --- php-7.0.0RC1/ext/date/lib/parse_tz.c~       2015-08-27 12:06:04.000000000 +0300
  24 +++ php-7.0.0RC1/ext/date/lib/parse_tz.c        2015-08-27 12:08:08.706661229 +0300
  25 @@ -20,6 +20,16 @@
  26
  27  #include "timelib.h"
  28
  29 +#ifdef HAVE_SYSTEM_TZDATA
  30 +#include <sys/mman.h>
  31 +#include <sys/stat.h>
  32 +#include <limits.h>
  33 +#include <fcntl.h>
  34 +#include <unistd.h>
  35 +
  36 +#include "php_scandir.h"
  37 +#endif
  38 +
  39  #include <stdio.h>
  40
  41  #ifdef HAVE_LOCALE_H
  42 @@ -43,7 +43,11 @@
  43  #endif
  44
  45  #define TIMELIB_SUPPORTS_V2DATA
  46 +#ifndef HAVE_SYSTEM_TZDATA
  47  #include "timezonedb.h"
  48 +#endif
  49 +
  50 +#include <ctype.h>
  51
  52  #if (defined(__APPLE__) || defined(__APPLE_CC__)) && (defined(__BIG_ENDIAN__) || defined(__LITTLE_ENDIAN__))
  53  # if defined(__LITTLE_ENDIAN__)
  54 @@ -53,6 +68,10 @@ static int read_preamble(const unsigned
  55  {
  56         uint32_t version;
  57
  58 +       if (memcmp(*tzf, "TZif", 4) == 0) {
  59 +               *tzf += 20;
  60 +               return 0;
  61 +       }
  62         /* read ID */
  63         version = (*tzf)[3] - '0';
  64         *tzf += 4;
  65 @@ -296,7 +315,418 @@ void timelib_dump_tzinfo(timelib_tzinfo
  66         }
  67  }
  68
  69 -static int seek_to_tz_position(const unsigned char **tzf, char *timezone, const timelib_tzdb *tzdb)
  70 +#ifdef HAVE_SYSTEM_TZDATA
  71 +
  72 +#ifdef HAVE_SYSTEM_TZDATA_PREFIX
  73 +#define ZONEINFO_PREFIX HAVE_SYSTEM_TZDATA_PREFIX
  74 +#else
  75 +#define ZONEINFO_PREFIX "/usr/share/zoneinfo"
  76 +#endif
  77 +
  78 +/* System timezone database pointer. */
  79 +static const timelib_tzdb *timezonedb_system;
  80 +
  81 +/* Hash table entry for the cache of the zone.tab mapping table. */
  82 +struct location_info {
  83 +        char code[2];
  84 +        double latitude, longitude;
  85 +        char name[64];
  86 +        char *comment;
  87 +        struct location_info *next;
  88 +};
  89 +
  90 +/* Cache of zone.tab. */
  91 +static struct location_info **system_location_table;
  92 +
  93 +/* Size of the zone.tab hash table; a random-ish prime big enough to
  94 + * prevent too many collisions. */
  95 +#define LOCINFO_HASH_SIZE (1021)
  96 +
  97 +/* Compute a case insensitive hash of str */
  98 +static uint32_t tz_hash(const char *str)
  99 +{
 100 +    const unsigned char *p = (const unsigned char *)str;
 101 +    uint32_t hash = 5381;
 102 +    int c;
 103 +
 104 +    while ((c = tolower(*p++)) != '\0') {
 105 +        hash = (hash << 5) ^ hash ^ c;
 106 +    }
 107 +
 108 +    return hash % LOCINFO_HASH_SIZE;
 109 +}
 110 +
 111 +/* Parse an ISO-6709 date as used in zone.tab. Returns end of the
 112 + * parsed string on success, or NULL on parse error.  On success,
 113 + * writes the parsed number to *result. */
 114 +static char *parse_iso6709(char *p, double *result)
 115 +{
 116 +    double v, sign;
 117 +    char *pend;
 118 +    size_t len;
 119 +
 120 +    if (*p == '+')
 121 +        sign = 1.0;
 122 +    else if (*p == '-')
 123 +        sign = -1.0;
 124 +    else
 125 +        return NULL;
 126 +
 127 +    p++;
 128 +    for (pend = p; *pend >= '0' && *pend <= '9'; pend++)
 129 +        ;;
 130 +
 131 +    /* Annoying encoding used by zone.tab has no decimal point, so use
 132 +     * the length to determine the format:
 133 +     *
 134 +     * 4 = DDMM
 135 +     * 5 = DDDMM
 136 +     * 6 = DDMMSS
 137 +     * 7 = DDDMMSS
 138 +     */
 139 +    len = pend - p;
 140 +    if (len < 4 || len > 7) {
 141 +        return NULL;
 142 +    }
 143 +
 144 +    /* p => [D]DD */
 145 +    v = (p[0] - '0') * 10.0 + (p[1] - '0');
 146 +    p += 2;
 147 +    if (len == 5 || len == 7)
 148 +        v = v * 10.0 + (*p++ - '0');
 149 +    /* p => MM[SS] */
 150 +    v += (10.0 * (p[0] - '0')
 151 +          + p[1] - '0') / 60.0;
 152 +    p += 2;
 153 +    /* p => [SS] */
 154 +    if (len > 5) {
 155 +        v += (10.0 * (p[0] - '0')
 156 +              + p[1] - '0') / 3600.0;
 157 +        p += 2;
 158 +    }
 159 +
 160 +    /* Round to five decimal place, not because it's a good idea,
 161 +     * but, because the builtin data uses rounded data, so, match
 162 +     * that. */
 163 +    *result = trunc(v * sign * 100000.0) / 100000.0;
 164 +
 165 +    return p;
 166 +}
 167 +
 168 +/* This function parses the zone.tab file to build up the mapping of
 169 + * timezone to country code and geographic location, and returns a
 170 + * hash table.  The hash table is indexed by the function:
 171 + *
 172 + *   tz_hash(timezone-name)
 173 + */
 174 +static struct location_info **create_location_table(void)
 175 +{
 176 +    struct location_info **li, *i;
 177 +    char zone_tab[PATH_MAX];
 178 +    char line[512];
 179 +    FILE *fp;
 180 +
 181 +    strncpy(zone_tab, ZONEINFO_PREFIX "/zone.tab", sizeof zone_tab);
 182 +
 183 +    fp = fopen(zone_tab, "r");
 184 +    if (!fp) {
 185 +        return NULL;
 186 +    }
 187 +
 188 +    li = calloc(LOCINFO_HASH_SIZE, sizeof *li);
 189 +
 190 +    while (fgets(line, sizeof line, fp)) {
 191 +        char *p = line, *code, *name, *comment;
 192 +        uint32_t hash;
 193 +        double latitude, longitude;
 194 +
 195 +        while (isspace(*p))
 196 +            p++;
 197 +
 198 +        if (*p == '#' || *p == '\0' || *p == '\n')
 199 +            continue;
 200 +
 201 +        if (!isalpha(p[0]) || !isalpha(p[1]) || p[2] != '\t')
 202 +            continue;
 203 +
 204 +        /* code => AA */
 205 +        code = p;
 206 +        p[2] = 0;
 207 +        p += 3;
 208 +
 209 +        /* coords => [+-][D]DDMM[SS][+-][D]DDMM[SS] */
 210 +        p = parse_iso6709(p, &latitude);
 211 +        if (!p) {
 212 +            continue;
 213 +        }
 214 +        p = parse_iso6709(p, &longitude);
 215 +        if (!p) {
 216 +            continue;
 217 +        }
 218 +
 219 +        if (!p || *p != '\t') {
 220 +            continue;
 221 +        }
 222 +
 223 +        /* name = string */
 224 +        name = ++p;
 225 +        while (*p != '\t' && *p && *p != '\n')
 226 +            p++;
 227 +
 228 +        *p++ = '\0';
 229 +
 230 +        /* comment = string */
 231 +        comment = p;
 232 +        while (*p != '\t' && *p && *p != '\n')
 233 +            p++;
 234 +
 235 +        if (*p == '\n' || *p == '\t')
 236 +            *p = '\0';
 237 +
 238 +        hash = tz_hash(name);
 239 +        i = malloc(sizeof *i);
 240 +        memcpy(i->code, code, 2);
 241 +        strncpy(i->name, name, sizeof i->name);
 242 +        i->comment = strdup(comment);
 243 +        i->longitude = longitude;
 244 +        i->latitude = latitude;
 245 +        i->next = li[hash];
 246 +        li[hash] = i;
 247 +        /* printf("%s [%u, %f, %f]\n", name, hash, latitude, longitude); */
 248 +    }
 249 +
 250 +    fclose(fp);
 251 +
 252 +    return li;
 253 +}
 254 +
 255 +/* Return location info from hash table, using given timezone name.
 256 + * Returns NULL if the name could not be found. */
 257 +const struct location_info *find_zone_info(struct location_info **li,
 258 +                                           const char *name)
 259 +{
 260 +    uint32_t hash = tz_hash(name);
 261 +    const struct location_info *l;
 262 +
 263 +    if (!li) {
 264 +        return NULL;
 265 +    }
 266 +
 267 +    for (l = li[hash]; l; l = l->next) {
 268 +        if (strcasecmp(l->name, name) == 0)
 269 +            return l;
 270 +    }
 271 +
 272 +    return NULL;
 273 +}
 274 +
 275 +/* Filter out some non-tzdata files and the posix/right databases, if
 276 + * present. */
 277 +static int index_filter(const struct dirent *ent)
 278 +{
 279 +       return strcmp(ent->d_name, ".") != 0
 280 +               && strcmp(ent->d_name, "..") != 0
 281 +               && strcmp(ent->d_name, "posix") != 0
 282 +               && strcmp(ent->d_name, "posixrules") != 0
 283 +               && strcmp(ent->d_name, "right") != 0
 284 +               && strstr(ent->d_name, ".tab") == NULL;
 285 +}
 286 +
 287 +static int sysdbcmp(const void *first, const void *second)
 288 +{
 289 +        const timelib_tzdb_index_entry *alpha = first, *beta = second;
 290 +
 291 +        return strcasecmp(alpha->id, beta->id);
 292 +}
 293 +
 294 +
 295 +/* Create the zone identifier index by trawling the filesystem. */
 296 +static void create_zone_index(timelib_tzdb *db)
 297 +{
 298 +       size_t dirstack_size,  dirstack_top;
 299 +       size_t index_size, index_next;
 300 +       timelib_tzdb_index_entry *db_index;
 301 +       char **dirstack;
 302 +
 303 +       /* LIFO stack to hold directory entries to scan; each slot is a
 304 +        * directory name relative to the zoneinfo prefix. */
 305 +       dirstack_size = 32;
 306 +       dirstack = malloc(dirstack_size * sizeof *dirstack);
 307 +       dirstack_top = 1;
 308 +       dirstack[0] = strdup("");
 309 +
 310 +       /* Index array. */
 311 +       index_size = 64;
 312 +       db_index = malloc(index_size * sizeof *db_index);
 313 +       index_next = 0;
 314 +
 315 +       do {
 316 +               struct dirent **ents;
 317 +               char name[PATH_MAX], *top;
 318 +               int count;
 319 +
 320 +               /* Pop the top stack entry, and iterate through its contents. */
 321 +               top = dirstack[--dirstack_top];
 322 +               snprintf(name, sizeof name, ZONEINFO_PREFIX "/%s", top);
 323 +
 324 +               count = php_scandir(name, &ents, index_filter, php_alphasort);
 325 +
 326 +               while (count > 0) {
 327 +                       struct stat st;
 328 +                       const char *leaf = ents[count - 1]->d_name;
 329 +
 330 +                       snprintf(name, sizeof name, ZONEINFO_PREFIX "/%s/%s",
 331 +                                top, leaf);
 332 +
 333 +                       if (strlen(name) && stat(name, &st) == 0) {
 334 +                               /* Name, relative to the zoneinfo prefix. */
 335 +                               const char *root = top;
 336 +
 337 +                               if (root[0] == '/') root++;
 338 +
 339 +                               snprintf(name, sizeof name, "%s%s%s", root,
 340 +                                        *root ? "/": "", leaf);
 341 +
 342 +                               if (S_ISDIR(st.st_mode)) {
 343 +                                       if (dirstack_top == dirstack_size) {
 344 +                                               dirstack_size *= 2;
 345 +                                               dirstack = realloc(dirstack,
 346 +                                                                  dirstack_size * sizeof *dirstack);
 347 +                                       }
 348 +                                       dirstack[dirstack_top++] = strdup(name);
 349 +                               }
 350 +                               else {
 351 +                                       if (index_next == index_size) {
 352 +                                               index_size *= 2;
 353 +                                               db_index = realloc(db_index,
 354 +                                                                  index_size * sizeof *db_index);
 355 +                                       }
 356 +
 357 +                                       db_index[index_next++].id = strdup(name);
 358 +                               }
 359 +                       }
 360 +
 361 +                       free(ents[--count]);
 362 +               }
 363 +
 364 +               if (count != -1) free(ents);
 365 +               free(top);
 366 +       } while (dirstack_top);
 367 +
 368 +        qsort(db_index, index_next, sizeof *db_index, sysdbcmp);
 369 +
 370 +       db->index = db_index;
 371 +       db->index_size = index_next;
 372 +
 373 +       free(dirstack);
 374 +}
 375 +
 376 +#define FAKE_HEADER "1234\0??\1??"
 377 +#define FAKE_UTC_POS (7 - 4)
 378 +
 379 +/* Create a fake data segment for database 'sysdb'. */
 380 +static void fake_data_segment(timelib_tzdb *sysdb,
 381 +                              struct location_info **info)
 382 +{
 383 +        size_t n;
 384 +        char *data, *p;
 385 +
 386 +        data = malloc(3 * sysdb->index_size + 7);
 387 +
 388 +        p = mempcpy(data, FAKE_HEADER, sizeof(FAKE_HEADER) - 1);
 389 +
 390 +        for (n = 0; n < sysdb->index_size; n++) {
 391 +                const struct location_info *li;
 392 +                timelib_tzdb_index_entry *ent;
 393 +
 394 +                ent = (timelib_tzdb_index_entry *)&sysdb->index[n];
 395 +
 396 +                /* Lookup the timezone name in the hash table. */
 397 +                if (strcmp(ent->id, "UTC") == 0) {
 398 +                        ent->pos = FAKE_UTC_POS;
 399 +                        continue;
 400 +                }
 401 +
 402 +                li = find_zone_info(info, ent->id);
 403 +                if (li) {
 404 +                        /* If found, append the BC byte and the
 405 +                         * country code; set the position for this
 406 +                         * section of timezone data.  */
 407 +                        ent->pos = (p - data) - 4;
 408 +                        *p++ = '\1';
 409 +                        *p++ = li->code[0];
 410 +                        *p++ = li->code[1];
 411 +                }
 412 +                else {
 413 +                        /* If not found, the timezone data can
 414 +                         * point at the header. */
 415 +                        ent->pos = 0;
 416 +                }
 417 +        }
 418 +
 419 +        sysdb->data = (unsigned char *)data;
 420 +}
 421 +
 422 +/* Returns true if the passed-in stat structure describes a
 423 + * probably-valid timezone file. */
 424 +static int is_valid_tzfile(const struct stat *st)
 425 +{
 426 +       return S_ISREG(st->st_mode) && st->st_size > 20;
 427 +}
 428 +
 429 +/* To allow timezone names to be used case-insensitively, find the
 430 + * canonical name for this timezone, if possible. */
 431 +static const char *canonical_tzname(const char *timezone)
 432 +{
 433 +    if (timezonedb_system) {
 434 +        timelib_tzdb_index_entry *ent, lookup;
 435 +
 436 +        lookup.id = (char *)timezone;
 437 +
 438 +        ent = bsearch(&lookup, timezonedb_system->index,
 439 +                      timezonedb_system->index_size, sizeof lookup,
 440 +                      sysdbcmp);
 441 +        if (ent) {
 442 +            return ent->id;
 443 +        }
 444 +    }
 445 +
 446 +    return timezone;
 447 +}
 448 +
 449 +/* Return the mmap()ed tzfile if found, else NULL.  On success, the
 450 + * length of the mapped data is placed in *length. */
 451 +static char *map_tzfile(const char *timezone, size_t *length)
 452 +{
 453 +       char fname[PATH_MAX];
 454 +       struct stat st;
 455 +       char *p;
 456 +       int fd;
 457 +
 458 +       if (timezone[0] == '\0' || strstr(timezone, "..") != NULL) {
 459 +               return NULL;
 460 +       }
 461 +
 462 +       snprintf(fname, sizeof fname, ZONEINFO_PREFIX "/%s", canonical_tzname(timezone));
 463 +
 464 +       fd = open(fname, O_RDONLY);
 465 +       if (fd == -1) {
 466 +               return NULL;
 467 +       } else if (fstat(fd, &st) != 0 || !is_valid_tzfile(&st)) {
 468 +               close(fd);
 469 +               return NULL;
 470 +       }
 471 +
 472 +       *length = st.st_size;
 473 +       p = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
 474 +       close(fd);
 475 +
 476 +       return p != MAP_FAILED ? p : NULL;
 477 +}
 478 +
 479 +#endif
 480 +
 481 +static int inmem_seek_to_tz_position(const unsigned char **tzf, char *timezone, const timelib_tzdb *tzdb)
 482  {
 483         int left = 0, right = tzdb->index_size - 1;
 484  #ifdef HAVE_SETLOCALE
 485 @@ -335,21 +765,87 @@ static int seek_to_tz_position(const uns
 486         return 0;
 487  }
 488
 489 +static int seek_to_tz_position(const unsigned char **tzf, char *timezone,
 490 +                              char **map, size_t *maplen,
 491 +                              const timelib_tzdb *tzdb)
 492 +{
 493 +#ifdef HAVE_SYSTEM_TZDATA
 494 +       if (tzdb == timezonedb_system) {
 495 +               char *orig;
 496 +
 497 +               orig = map_tzfile(timezone, maplen);
 498 +               if (orig == NULL) {
 499 +                       return 0;
 500 +               }
 501 +
 502 +               (*tzf) = (unsigned char *)orig ;
 503 +               *map = orig;
 504 +               return 1;
 505 +       }
 506 +       else
 507 +#endif
 508 +       {
 509 +               return inmem_seek_to_tz_position(tzf, timezone, tzdb);
 510 +       }
 511 +}
 512 +
 513  const timelib_tzdb *timelib_builtin_db(void)
 514  {
 515 +#ifdef HAVE_SYSTEM_TZDATA
 516 +       if (timezonedb_system == NULL) {
 517 +               timelib_tzdb *tmp = malloc(sizeof *tmp);
 518 +
 519 +               tmp->version = "0.system";
 520 +               tmp->data = NULL;
 521 +               create_zone_index(tmp);
 522 +               system_location_table = create_location_table();
 523 +               fake_data_segment(tmp, system_location_table);
 524 +               timezonedb_system = tmp;
 525 +       }
 526 +
 527 +       return timezonedb_system;
 528 +#else
 529         return &timezonedb_builtin;
 530 +#endif
 531  }
 532
 533  const timelib_tzdb_index_entry *timelib_timezone_builtin_identifiers_list(int *count)
 534  {
 535 +#ifdef HAVE_SYSTEM_TZDATA
 536 +       *count = timezonedb_system->index_size;
 537 +       return timezonedb_system->index;
 538 +#else
 539         *count = sizeof(timezonedb_idx_builtin) / sizeof(*timezonedb_idx_builtin);
 540         return timezonedb_idx_builtin;
 541 +#endif
 542  }
 543
 544  int timelib_timezone_id_is_valid(char *timezone, const timelib_tzdb *tzdb)
 545  {
 546         const unsigned char *tzf;
 547 -       return (seek_to_tz_position(&tzf, timezone, tzdb));
 548 +
 549 +#ifdef HAVE_SYSTEM_TZDATA
 550 +       if (tzdb == timezonedb_system) {
 551 +               char fname[PATH_MAX];
 552 +               struct stat st;
 553 +
 554 +               if (timezone[0] == '\0' || strstr(timezone, "..") != NULL) {
 555 +                       return 0;
 556 +               }
 557 +
 558 +               if (system_location_table) {
 559 +                       if (find_zone_info(system_location_table, timezone) != NULL) {
 560 +                               /* found in cache */
 561 +                               return 1;
 562 +                       }
 563 +               }
 564 +
 565 +               snprintf(fname, sizeof fname, ZONEINFO_PREFIX "/%s", canonical_tzname(timezone));
 566 +
 567 +               return stat(fname, &st) == 0 && is_valid_tzfile(&st);
 568 +       }
 569 +#endif
 570 +       return (inmem_seek_to_tz_position(&tzf, timezone, tzdb));
 571  }
 572
 573  static void skip_64bit_preamble(const unsigned char **tzf, timelib_tzinfo *tz)
 574 @@ -374,24 +870,54 @@ static void read_64bit_header(const unsi
 575  timelib_tzinfo *timelib_parse_tzfile(char *timezone, const timelib_tzdb *tzdb)
 576  {
 577         const unsigned char *tzf;
 578 +       char *memmap = NULL;
 579 +       size_t maplen;
 580         timelib_tzinfo *tmp;
 581         int version;
 582
 583 -       if (seek_to_tz_position(&tzf, timezone, tzdb)) {
 584 +       if (seek_to_tz_position(&tzf, timezone, &memmap, &maplen, tzdb)) {
 585                 tmp = timelib_tzinfo_ctor(timezone);
 586
 587                 version = read_preamble(&tzf, tmp);
 588                 read_header(&tzf, tmp);
 589                 read_transistions(&tzf, tmp);
 590                 read_types(&tzf, tmp);
 591 -               if (version == 2) {
 592 -                       skip_64bit_preamble(&tzf, tmp);
 593 -                       read_64bit_header(&tzf, tmp);
 594 -                       skip_64bit_transistions(&tzf, tmp);
 595 -                       skip_64bit_types(&tzf, tmp);
 596 -                       skip_posix_string(&tzf, tmp);
 597 -               }
 598 -               read_location(&tzf, tmp);
 599 +
 600 +#ifdef HAVE_SYSTEM_TZDATA
 601 +               if (memmap) {
 602 +                       const struct location_info *li;
 603 +
 604 +                       /* TZif-style - grok the location info from the system database,
 605 +                        * if possible. */
 606 +
 607 +                       if ((li = find_zone_info(system_location_table, timezone)) != NULL) {
 608 +                               tmp->location.comments = strdup(li->comment);
 609 +                                strncpy(tmp->location.country_code, li->code, 2);
 610 +                               tmp->location.longitude = li->longitude;
 611 +                               tmp->location.latitude = li->latitude;
 612 +                               tmp->bc = 1;
 613 +                       }
 614 +                       else {
 615 +                               strcpy(tmp->location.country_code, "??");
 616 +                               tmp->bc = 0;
 617 +                               tmp->location.comments = strdup("");
 618 +                       }
 619 +
 620 +                       /* Now done with the mmap segment - discard it. */
 621 +                       munmap(memmap, maplen);
 622 +               } else
 623 +#endif
 624 +               {
 625 +                       if (version == 2) {
 626 +                               skip_64bit_preamble(&tzf, tmp);
 627 +                               read_64bit_header(&tzf, tmp);
 628 +                               skip_64bit_transistions(&tzf, tmp);
 629 +                               skip_64bit_types(&tzf, tmp);
 630 +                               skip_posix_string(&tzf, tmp);
 631 +                       }
 632 +                       /* PHP-style - use the embedded info. */
 633 +                       read_location(&tzf, tmp);
 634 +               }
 635         } else {
 636                 tmp = NULL;
 637         }
 638 diff -up php-5.6.9RC1/ext/date/lib/timelib.m4.systzdata php-5.6.9RC1/ext/date/lib/timelib.m4
 639 --- php-5.6.9RC1/ext/date/lib/timelib.m4.systzdata      2015-04-30 00:00:18.000000000 +0200
 640 +++ php-5.6.9RC1/ext/date/lib/timelib.m4        2015-04-30 06:32:08.549500385 +0200
 641 @@ -78,3 +78,17 @@ stdlib.h
 642
 643  dnl Check for strtoll, atoll
 644  AC_CHECK_FUNCS(strtoll atoll strftime)
 645 +
 646 +PHP_ARG_WITH(system-tzdata, for use of system timezone data,
 647 +[  --with-system-tzdata[=DIR]      to specify use of system timezone data],
 648 +no, no)
 649 +
 650 +if test "$PHP_SYSTEM_TZDATA" != "no"; then
 651 +   AC_DEFINE(HAVE_SYSTEM_TZDATA, 1, [Define if system timezone data is used])
 652 +
 653 +   if test "$PHP_SYSTEM_TZDATA" != "yes"; then
 654 +      AC_DEFINE_UNQUOTED(HAVE_SYSTEM_TZDATA_PREFIX, "$PHP_SYSTEM_TZDATA",
 655 +                         [Define for location of system timezone data])
 656 +   fi
 657 +fi
 658 +