You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
746 lines
21 KiB
746 lines
21 KiB
# License: MIT |
|
# http://opensource.org/licenses/MIT |
|
|
|
Add support for use of the system timezone database, rather |
|
than embedding a copy. Discussed upstream but was not desired. |
|
|
|
History: |
|
f24: add internal UTC if tzdata is missing |
|
r23: fix possible buffer overflow |
|
r22: retrieve tzdata version from /usr/share/zoneinfo/tzdata.zi |
|
r21: adapt for timelib 2021.03 (in 8.1.0) |
|
r20: adapt for timelib 2020.03 (in 8.0.10RC1) |
|
r19: adapt for timelib 2020.02 (in 8.0.0beta2) |
|
r18: adapt for autotool change in 7.3.3RC1 |
|
r17: adapt for timelib 2018.01 (in 7.3.2RC1) |
|
r16: adapt for timelib 2017.06 (in 7.2.3RC1) |
|
r15: adapt for timelib 2017.05beta7 (in 7.2.0RC1) |
|
r14: improve check for valid tz file |
|
r13: adapt for upstream changes to use PHP allocator |
|
r12: adapt for upstream changes for new zic |
|
r11: use canonical names to avoid more case sensitivity issues |
|
round lat/long from zone.tab towards zero per builtin db |
|
r10: make timezone case insensitive |
|
r9: fix another compile error without --with-system-tzdata configured (Michael Heimpold) |
|
r8: fix compile error without --with-system-tzdata configured |
|
r7: improve check for valid timezone id to exclude directories |
|
r6: fix fd leak in r5, fix country code/BC flag use in |
|
timezone_identifiers_list() using system db, |
|
fix use of PECL timezonedb to override system db, |
|
r5: reverts addition of "System/Localtime" fake tzname. |
|
updated for 5.3.0, parses zone.tab to pick up mapping between |
|
timezone name, country code and long/lat coords |
|
r4: added "System/Localtime" tzname which uses /etc/localtime |
|
r3: fix a crash if /usr/share/zoneinfo doesn't exist (Raphael Geissert) |
|
r2: add filesystem trawl to set up name alias index |
|
r1: initial revision |
|
|
|
|
|
diff --git a/ext/date/config0.m4 b/ext/date/config0.m4 |
|
index 6b803bf33e..53c3cdb3f4 100644 |
|
--- a/ext/date/config0.m4 |
|
+++ b/ext/date/config0.m4 |
|
@@ -4,6 +4,19 @@ AC_CHECK_HEADERS([io.h]) |
|
dnl Check for strtoll, atoll |
|
AC_CHECK_FUNCS(strtoll atoll) |
|
|
|
+PHP_ARG_WITH(system-tzdata, for use of system timezone data, |
|
+[ --with-system-tzdata[=DIR] to specify use of system timezone data], |
|
+no, no) |
|
+ |
|
+if test "$PHP_SYSTEM_TZDATA" != "no"; then |
|
+ AC_DEFINE(HAVE_SYSTEM_TZDATA, 1, [Define if system timezone data is used]) |
|
+ |
|
+ if test "$PHP_SYSTEM_TZDATA" != "yes"; then |
|
+ AC_DEFINE_UNQUOTED(HAVE_SYSTEM_TZDATA_PREFIX, "$PHP_SYSTEM_TZDATA", |
|
+ [Define for location of system timezone data]) |
|
+ fi |
|
+fi |
|
+ |
|
PHP_DATE_CFLAGS="-Wno-implicit-fallthrough -I@ext_builddir@/lib -DZEND_ENABLE_STATIC_TSRMLS_CACHE=1 -DHAVE_TIMELIB_CONFIG_H=1" |
|
timelib_sources="lib/astro.c lib/dow.c lib/parse_date.c lib/parse_tz.c lib/parse_posix.c |
|
lib/timelib.c lib/tm2unixtime.c lib/unixtime2tm.c lib/parse_iso_intervals.c lib/interval.c" |
|
diff --git a/ext/date/lib/parse_tz.c b/ext/date/lib/parse_tz.c |
|
index c7f93580d7..ec196a98b6 100644 |
|
--- a/ext/date/lib/parse_tz.c |
|
+++ b/ext/date/lib/parse_tz.c |
|
@@ -26,9 +26,33 @@ |
|
#include "timelib.h" |
|
#include "timelib_private.h" |
|
|
|
+#ifdef HAVE_SYSTEM_TZDATA |
|
+#include <sys/mman.h> |
|
+#include <sys/stat.h> |
|
+#include <limits.h> |
|
+#include <fcntl.h> |
|
+#include <unistd.h> |
|
+ |
|
+#include "php_scandir.h" |
|
+ |
|
+static const unsigned char internal_utc[] = { |
|
+ 0x54, 0x5a, 0x69, 0x66, 0x32, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
|
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
|
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, |
|
+ 0x00, 0x00, 0x55, 0x54, 0x43, 0x00, 0x54, 0x5a, 0x69, 0x66, 0x32, 0x00, 0x00, 0x00, 0x00, 0x00, |
|
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
|
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, |
|
+ 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x54, 0x43, 0x00, 0x0a, 0x55, 0x54, 0x43, |
|
+ 0x30, 0x0a |
|
+}; |
|
+ |
|
+#else |
|
#define TIMELIB_SUPPORTS_V2DATA |
|
#define TIMELIB_SUPPORT_SLIM_FILE |
|
#include "timezonedb.h" |
|
+#endif |
|
+ |
|
+#include <ctype.h> |
|
|
|
#if (defined(__APPLE__) || defined(__APPLE_CC__)) && (defined(__BIG_ENDIAN__) || defined(__LITTLE_ENDIAN__)) |
|
# if defined(__LITTLE_ENDIAN__) |
|
@@ -95,6 +119,11 @@ static int read_php_preamble(const unsigned char **tzf, timelib_tzinfo *tz) |
|
{ |
|
uint32_t version; |
|
|
|
+ if (memcmp(*tzf, "TZif", 4) == 0) { |
|
+ *tzf += 20; |
|
+ return 0; |
|
+ } |
|
+ |
|
/* read ID */ |
|
version = (*tzf)[3] - '0'; |
|
*tzf += 4; |
|
@@ -577,7 +606,475 @@ void timelib_dump_tzinfo(timelib_tzinfo *tz) |
|
} |
|
} |
|
|
|
-static int seek_to_tz_position(const unsigned char **tzf, const char *timezone, const timelib_tzdb *tzdb) |
|
+#ifdef HAVE_SYSTEM_TZDATA |
|
+ |
|
+#ifdef HAVE_SYSTEM_TZDATA_PREFIX |
|
+#define ZONEINFO_PREFIX HAVE_SYSTEM_TZDATA_PREFIX |
|
+#else |
|
+#define ZONEINFO_PREFIX "/usr/share/zoneinfo" |
|
+#endif |
|
+ |
|
+/* System timezone database pointer. */ |
|
+static const timelib_tzdb *timezonedb_system; |
|
+ |
|
+/* Hash table entry for the cache of the zone.tab mapping table. */ |
|
+struct location_info { |
|
+ char code[2]; |
|
+ double latitude, longitude; |
|
+ char name[64]; |
|
+ char *comment; |
|
+ struct location_info *next; |
|
+}; |
|
+ |
|
+/* Cache of zone.tab. */ |
|
+static struct location_info **system_location_table; |
|
+ |
|
+/* Size of the zone.tab hash table; a random-ish prime big enough to |
|
+ * prevent too many collisions. */ |
|
+#define LOCINFO_HASH_SIZE (1021) |
|
+ |
|
+/* Compute a case insensitive hash of str */ |
|
+static uint32_t tz_hash(const char *str) |
|
+{ |
|
+ const unsigned char *p = (const unsigned char *)str; |
|
+ uint32_t hash = 5381; |
|
+ int c; |
|
+ |
|
+ while ((c = tolower(*p++)) != '\0') { |
|
+ hash = (hash << 5) ^ hash ^ c; |
|
+ } |
|
+ |
|
+ return hash % LOCINFO_HASH_SIZE; |
|
+} |
|
+ |
|
+/* Parse an ISO-6709 date as used in zone.tab. Returns end of the |
|
+ * parsed string on success, or NULL on parse error. On success, |
|
+ * writes the parsed number to *result. */ |
|
+static char *parse_iso6709(char *p, double *result) |
|
+{ |
|
+ double v, sign; |
|
+ char *pend; |
|
+ size_t len; |
|
+ |
|
+ if (*p == '+') |
|
+ sign = 1.0; |
|
+ else if (*p == '-') |
|
+ sign = -1.0; |
|
+ else |
|
+ return NULL; |
|
+ |
|
+ p++; |
|
+ for (pend = p; *pend >= '0' && *pend <= '9'; pend++) |
|
+ ;; |
|
+ |
|
+ /* Annoying encoding used by zone.tab has no decimal point, so use |
|
+ * the length to determine the format: |
|
+ * |
|
+ * 4 = DDMM |
|
+ * 5 = DDDMM |
|
+ * 6 = DDMMSS |
|
+ * 7 = DDDMMSS |
|
+ */ |
|
+ len = pend - p; |
|
+ if (len < 4 || len > 7) { |
|
+ return NULL; |
|
+ } |
|
+ |
|
+ /* p => [D]DD */ |
|
+ v = (p[0] - '0') * 10.0 + (p[1] - '0'); |
|
+ p += 2; |
|
+ if (len == 5 || len == 7) |
|
+ v = v * 10.0 + (*p++ - '0'); |
|
+ /* p => MM[SS] */ |
|
+ v += (10.0 * (p[0] - '0') |
|
+ + p[1] - '0') / 60.0; |
|
+ p += 2; |
|
+ /* p => [SS] */ |
|
+ if (len > 5) { |
|
+ v += (10.0 * (p[0] - '0') |
|
+ + p[1] - '0') / 3600.0; |
|
+ p += 2; |
|
+ } |
|
+ |
|
+ /* Round to five decimal place, not because it's a good idea, |
|
+ * but, because the builtin data uses rounded data, so, match |
|
+ * that. */ |
|
+ *result = trunc(v * sign * 100000.0) / 100000.0; |
|
+ |
|
+ return p; |
|
+} |
|
+ |
|
+/* This function parses the zone.tab file to build up the mapping of |
|
+ * timezone to country code and geographic location, and returns a |
|
+ * hash table. The hash table is indexed by the function: |
|
+ * |
|
+ * tz_hash(timezone-name) |
|
+ */ |
|
+static struct location_info **create_location_table(void) |
|
+{ |
|
+ struct location_info **li, *i; |
|
+ char zone_tab[PATH_MAX]; |
|
+ char line[512]; |
|
+ FILE *fp; |
|
+ |
|
+ strncpy(zone_tab, ZONEINFO_PREFIX "/zone.tab", sizeof zone_tab); |
|
+ |
|
+ fp = fopen(zone_tab, "r"); |
|
+ if (!fp) { |
|
+ return NULL; |
|
+ } |
|
+ |
|
+ li = calloc(LOCINFO_HASH_SIZE, sizeof *li); |
|
+ |
|
+ while (fgets(line, sizeof line, fp)) { |
|
+ char *p = line, *code, *name, *comment; |
|
+ uint32_t hash; |
|
+ double latitude, longitude; |
|
+ |
|
+ while (isspace(*p)) |
|
+ p++; |
|
+ |
|
+ if (*p == '#' || *p == '\0' || *p == '\n') |
|
+ continue; |
|
+ |
|
+ if (!isalpha(p[0]) || !isalpha(p[1]) || p[2] != '\t') |
|
+ continue; |
|
+ |
|
+ /* code => AA */ |
|
+ code = p; |
|
+ p[2] = 0; |
|
+ p += 3; |
|
+ |
|
+ /* coords => [+-][D]DDMM[SS][+-][D]DDMM[SS] */ |
|
+ p = parse_iso6709(p, &latitude); |
|
+ if (!p) { |
|
+ continue; |
|
+ } |
|
+ p = parse_iso6709(p, &longitude); |
|
+ if (!p) { |
|
+ continue; |
|
+ } |
|
+ |
|
+ if (!p || *p != '\t') { |
|
+ continue; |
|
+ } |
|
+ |
|
+ /* name = string */ |
|
+ name = ++p; |
|
+ while (*p != '\t' && *p && *p != '\n') |
|
+ p++; |
|
+ |
|
+ *p++ = '\0'; |
|
+ |
|
+ /* comment = string */ |
|
+ comment = p; |
|
+ while (*p != '\t' && *p && *p != '\n') |
|
+ p++; |
|
+ |
|
+ if (*p == '\n' || *p == '\t') |
|
+ *p = '\0'; |
|
+ |
|
+ hash = tz_hash(name); |
|
+ i = malloc(sizeof *i); |
|
+ memcpy(i->code, code, 2); |
|
+ strncpy(i->name, name, sizeof i->name); |
|
+ i->comment = strdup(comment); |
|
+ i->longitude = longitude; |
|
+ i->latitude = latitude; |
|
+ i->next = li[hash]; |
|
+ li[hash] = i; |
|
+ /* printf("%s [%u, %f, %f]\n", name, hash, latitude, longitude); */ |
|
+ } |
|
+ |
|
+ fclose(fp); |
|
+ |
|
+ return li; |
|
+} |
|
+ |
|
+/* Return location info from hash table, using given timezone name. |
|
+ * Returns NULL if the name could not be found. */ |
|
+const struct location_info *find_zone_info(struct location_info **li, |
|
+ const char *name) |
|
+{ |
|
+ uint32_t hash = tz_hash(name); |
|
+ const struct location_info *l; |
|
+ |
|
+ if (!li) { |
|
+ return NULL; |
|
+ } |
|
+ |
|
+ for (l = li[hash]; l; l = l->next) { |
|
+ if (timelib_strcasecmp(l->name, name) == 0) |
|
+ return l; |
|
+ } |
|
+ |
|
+ return NULL; |
|
+} |
|
+ |
|
+/* Filter out some non-tzdata files and the posix/right databases, if |
|
+ * present. */ |
|
+static int index_filter(const struct dirent *ent) |
|
+{ |
|
+ return strcmp(ent->d_name, ".") != 0 |
|
+ && strcmp(ent->d_name, "..") != 0 |
|
+ && strcmp(ent->d_name, "posix") != 0 |
|
+ && strcmp(ent->d_name, "posixrules") != 0 |
|
+ && strcmp(ent->d_name, "right") != 0 |
|
+ && strstr(ent->d_name, ".list") == NULL |
|
+ && strstr(ent->d_name, ".tab") == NULL; |
|
+} |
|
+ |
|
+static int sysdbcmp(const void *first, const void *second) |
|
+{ |
|
+ const timelib_tzdb_index_entry *alpha = first, *beta = second; |
|
+ |
|
+ return timelib_strcasecmp(alpha->id, beta->id); |
|
+} |
|
+ |
|
+/* Retrieve tzdata version. */ |
|
+static void retrieve_zone_version(timelib_tzdb *db) |
|
+{ |
|
+ static char buf[30]; |
|
+ char path[PATH_MAX]; |
|
+ FILE *fp; |
|
+ |
|
+ strncpy(path, ZONEINFO_PREFIX "/tzdata.zi", sizeof(path)); |
|
+ |
|
+ fp = fopen(path, "r"); |
|
+ if (fp) { |
|
+ if (fgets(buf, sizeof(buf), fp)) { |
|
+ if (!memcmp(buf, "# version ", 10) && |
|
+ isdigit(buf[10]) && |
|
+ isdigit(buf[11]) && |
|
+ isdigit(buf[12]) && |
|
+ isdigit(buf[13]) && |
|
+ islower(buf[14])) { |
|
+ if (buf[14] >= 't') { /* 2022t = 2022.20 */ |
|
+ buf[17] = 0; |
|
+ buf[16] = buf[14] - 't' + '0'; |
|
+ buf[15] = '2'; |
|
+ } else if (buf[14] >= 'j') { /* 2022j = 2022.10 */ |
|
+ buf[17] = 0; |
|
+ buf[16] = buf[14] - 'j' + '0'; |
|
+ buf[15] = '1'; |
|
+ } else { /* 2022a = 2022.1 */ |
|
+ buf[16] = 0; |
|
+ buf[15] = buf[14] - 'a' + '1'; |
|
+ } |
|
+ buf[14] = '.'; |
|
+ db->version = buf+10; |
|
+ } |
|
+ } |
|
+ fclose(fp); |
|
+ } |
|
+} |
|
+ |
|
+ |
|
+/* Create the zone identifier index by trawling the filesystem. */ |
|
+static void create_zone_index(timelib_tzdb *db) |
|
+{ |
|
+ size_t dirstack_size, dirstack_top; |
|
+ size_t index_size, index_next; |
|
+ timelib_tzdb_index_entry *db_index; |
|
+ char **dirstack; |
|
+ |
|
+ /* LIFO stack to hold directory entries to scan; each slot is a |
|
+ * directory name relative to the zoneinfo prefix. */ |
|
+ dirstack_size = 32; |
|
+ dirstack = malloc(dirstack_size * sizeof *dirstack); |
|
+ dirstack_top = 1; |
|
+ dirstack[0] = strdup(""); |
|
+ |
|
+ /* Index array. */ |
|
+ index_size = 64; |
|
+ db_index = malloc(index_size * sizeof *db_index); |
|
+ index_next = 0; |
|
+ |
|
+ do { |
|
+ struct dirent **ents; |
|
+ char name[PATH_MAX], *top; |
|
+ int count; |
|
+ |
|
+ /* Pop the top stack entry, and iterate through its contents. */ |
|
+ top = dirstack[--dirstack_top]; |
|
+ snprintf(name, sizeof name, ZONEINFO_PREFIX "/%s", top); |
|
+ |
|
+ count = php_scandir(name, &ents, index_filter, php_alphasort); |
|
+ |
|
+ while (count > 0) { |
|
+ struct stat st; |
|
+ const char *leaf = ents[count - 1]->d_name; |
|
+ |
|
+ snprintf(name, sizeof name, ZONEINFO_PREFIX "/%s/%s", |
|
+ top, leaf); |
|
+ |
|
+ if (strlen(name) && stat(name, &st) == 0) { |
|
+ /* Name, relative to the zoneinfo prefix. */ |
|
+ const char *root = top; |
|
+ |
|
+ if (root[0] == '/') root++; |
|
+ |
|
+ snprintf(name, sizeof name, "%s%s%s", root, |
|
+ *root ? "/": "", leaf); |
|
+ |
|
+ if (S_ISDIR(st.st_mode)) { |
|
+ if (dirstack_top == dirstack_size) { |
|
+ dirstack_size *= 2; |
|
+ dirstack = realloc(dirstack, |
|
+ dirstack_size * sizeof *dirstack); |
|
+ } |
|
+ dirstack[dirstack_top++] = strdup(name); |
|
+ } |
|
+ else { |
|
+ if (index_next == index_size) { |
|
+ index_size *= 2; |
|
+ db_index = realloc(db_index, |
|
+ index_size * sizeof *db_index); |
|
+ } |
|
+ |
|
+ db_index[index_next++].id = strdup(name); |
|
+ } |
|
+ } |
|
+ |
|
+ free(ents[--count]); |
|
+ } |
|
+ |
|
+ if (count != -1) free(ents); |
|
+ free(top); |
|
+ } while (dirstack_top); |
|
+ |
|
+ qsort(db_index, index_next, sizeof *db_index, sysdbcmp); |
|
+ |
|
+ if (!index_next) { |
|
+ db_index[index_next++].id = strdup("UTC"); |
|
+ } |
|
+ db->index = db_index; |
|
+ db->index_size = index_next; |
|
+ |
|
+ free(dirstack); |
|
+} |
|
+ |
|
+#define FAKE_HEADER "1234\0??\1??" |
|
+#define FAKE_UTC_POS (7 - 4) |
|
+ |
|
+/* Create a fake data segment for database 'sysdb'. */ |
|
+static void fake_data_segment(timelib_tzdb *sysdb, |
|
+ struct location_info **info) |
|
+{ |
|
+ size_t n; |
|
+ char *data, *p; |
|
+ |
|
+ data = malloc(3 * sysdb->index_size + sizeof(FAKE_HEADER) - 1); |
|
+ |
|
+ p = mempcpy(data, FAKE_HEADER, sizeof(FAKE_HEADER) - 1); |
|
+ |
|
+ for (n = 0; n < sysdb->index_size; n++) { |
|
+ const struct location_info *li; |
|
+ timelib_tzdb_index_entry *ent; |
|
+ |
|
+ ent = (timelib_tzdb_index_entry *)&sysdb->index[n]; |
|
+ |
|
+ /* Lookup the timezone name in the hash table. */ |
|
+ if (strcmp(ent->id, "UTC") == 0) { |
|
+ ent->pos = FAKE_UTC_POS; |
|
+ continue; |
|
+ } |
|
+ |
|
+ li = find_zone_info(info, ent->id); |
|
+ if (li) { |
|
+ /* If found, append the BC byte and the |
|
+ * country code; set the position for this |
|
+ * section of timezone data. */ |
|
+ ent->pos = (p - data) - 4; |
|
+ *p++ = '\1'; |
|
+ *p++ = li->code[0]; |
|
+ *p++ = li->code[1]; |
|
+ } |
|
+ else { |
|
+ /* If not found, the timezone data can |
|
+ * point at the header. */ |
|
+ ent->pos = 0; |
|
+ } |
|
+ } |
|
+ |
|
+ sysdb->data = (unsigned char *)data; |
|
+} |
|
+ |
|
+/* Returns true if the passed-in stat structure describes a |
|
+ * probably-valid timezone file. */ |
|
+static int is_valid_tzfile(const struct stat *st, int fd) |
|
+{ |
|
+ if (fd) { |
|
+ char buf[20]; |
|
+ if (read(fd, buf, 20)!=20) { |
|
+ return 0; |
|
+ } |
|
+ lseek(fd, SEEK_SET, 0); |
|
+ if (memcmp(buf, "TZif", 4)) { |
|
+ return 0; |
|
+ } |
|
+ } |
|
+ return S_ISREG(st->st_mode) && st->st_size > 20; |
|
+} |
|
+ |
|
+/* To allow timezone names to be used case-insensitively, find the |
|
+ * canonical name for this timezone, if possible. */ |
|
+static const char *canonical_tzname(const char *timezone) |
|
+{ |
|
+ if (timezonedb_system) { |
|
+ timelib_tzdb_index_entry *ent, lookup; |
|
+ |
|
+ lookup.id = (char *)timezone; |
|
+ |
|
+ ent = bsearch(&lookup, timezonedb_system->index, |
|
+ timezonedb_system->index_size, sizeof lookup, |
|
+ sysdbcmp); |
|
+ if (ent) { |
|
+ return ent->id; |
|
+ } |
|
+ } |
|
+ |
|
+ return timezone; |
|
+} |
|
+ |
|
+/* Return the mmap()ed tzfile if found, else NULL. On success, the |
|
+ * length of the mapped data is placed in *length. */ |
|
+static char *map_tzfile(const char *timezone, size_t *length) |
|
+{ |
|
+ char fname[PATH_MAX]; |
|
+ struct stat st; |
|
+ char *p; |
|
+ int fd; |
|
+ |
|
+ if (timezone[0] == '\0' || strstr(timezone, "..") != NULL) { |
|
+ return NULL; |
|
+ } |
|
+ |
|
+ snprintf(fname, sizeof fname, ZONEINFO_PREFIX "/%s", canonical_tzname(timezone)); |
|
+ |
|
+ fd = open(fname, O_RDONLY); |
|
+ if (fd == -1) { |
|
+ if (strcmp(timezone, "UTC")) { |
|
+ return NULL; |
|
+ } else { |
|
+ *length = sizeof(internal_utc); |
|
+ return internal_utc; |
|
+ } |
|
+ } else if (fstat(fd, &st) != 0 || !is_valid_tzfile(&st, fd)) { |
|
+ close(fd); |
|
+ return NULL; |
|
+ } |
|
+ |
|
+ *length = st.st_size; |
|
+ p = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0); |
|
+ close(fd); |
|
+ |
|
+ return p != MAP_FAILED ? p : NULL; |
|
+} |
|
+ |
|
+#endif |
|
+ |
|
+static int inmem_seek_to_tz_position(const unsigned char **tzf, const char *timezone, const timelib_tzdb *tzdb) |
|
{ |
|
int left = 0, right = tzdb->index_size - 1; |
|
|
|
@@ -603,9 +1100,49 @@ static int seek_to_tz_position(const unsigned char **tzf, const char *timezone, |
|
return 0; |
|
} |
|
|
|
+static int seek_to_tz_position(const unsigned char **tzf, const char *timezone, |
|
+ char **map, size_t *maplen, |
|
+ const timelib_tzdb *tzdb) |
|
+{ |
|
+#ifdef HAVE_SYSTEM_TZDATA |
|
+ if (tzdb == timezonedb_system) { |
|
+ char *orig; |
|
+ |
|
+ orig = map_tzfile(timezone, maplen); |
|
+ if (orig == NULL) { |
|
+ return 0; |
|
+ } |
|
+ |
|
+ (*tzf) = (unsigned char *)orig; |
|
+ *map = orig; |
|
+ return 1; |
|
+ } |
|
+ else |
|
+#endif |
|
+ { |
|
+ return inmem_seek_to_tz_position(tzf, timezone, tzdb); |
|
+ } |
|
+} |
|
+ |
|
const timelib_tzdb *timelib_builtin_db(void) |
|
{ |
|
+#ifdef HAVE_SYSTEM_TZDATA |
|
+ if (timezonedb_system == NULL) { |
|
+ timelib_tzdb *tmp = malloc(sizeof *tmp); |
|
+ |
|
+ tmp->version = "0"; |
|
+ tmp->data = NULL; |
|
+ create_zone_index(tmp); |
|
+ retrieve_zone_version(tmp); |
|
+ system_location_table = create_location_table(); |
|
+ fake_data_segment(tmp, system_location_table); |
|
+ timezonedb_system = tmp; |
|
+ } |
|
+ |
|
+ return timezonedb_system; |
|
+#else |
|
return &timezonedb_builtin; |
|
+#endif |
|
} |
|
|
|
const timelib_tzdb_index_entry *timelib_timezone_identifiers_list(const timelib_tzdb *tzdb, int *count) |
|
@@ -617,7 +1154,32 @@ const timelib_tzdb_index_entry *timelib_timezone_identifiers_list(const timelib_ |
|
int timelib_timezone_id_is_valid(const char *timezone, const timelib_tzdb *tzdb) |
|
{ |
|
const unsigned char *tzf; |
|
- return (seek_to_tz_position(&tzf, timezone, tzdb)); |
|
+ |
|
+#ifdef HAVE_SYSTEM_TZDATA |
|
+ if (tzdb == timezonedb_system) { |
|
+ char fname[PATH_MAX]; |
|
+ struct stat st; |
|
+ |
|
+ if (timezone[0] == '\0' || strstr(timezone, "..") != NULL) { |
|
+ return 0; |
|
+ } |
|
+ if (!strcmp(timezone, "UTC")) { |
|
+ return 1; |
|
+ } |
|
+ if (system_location_table) { |
|
+ if (find_zone_info(system_location_table, timezone) != NULL) { |
|
+ /* found in cache */ |
|
+ return 1; |
|
+ } |
|
+ } |
|
+ |
|
+ snprintf(fname, sizeof fname, ZONEINFO_PREFIX "/%s", canonical_tzname(timezone)); |
|
+ |
|
+ return stat(fname, &st) == 0 && is_valid_tzfile(&st, 0); |
|
+ } |
|
+#endif |
|
+ |
|
+ return (inmem_seek_to_tz_position(&tzf, timezone, tzdb)); |
|
} |
|
|
|
static int skip_64bit_preamble(const unsigned char **tzf, timelib_tzinfo *tz) |
|
@@ -662,6 +1224,8 @@ static timelib_tzinfo* timelib_tzinfo_ctor(const char *name) |
|
timelib_tzinfo *timelib_parse_tzfile(const char *timezone, const timelib_tzdb *tzdb, int *error_code) |
|
{ |
|
const unsigned char *tzf; |
|
+ char *memmap = NULL; |
|
+ size_t maplen; |
|
timelib_tzinfo *tmp; |
|
int version; |
|
int transitions_result, types_result; |
|
@@ -669,7 +1233,7 @@ timelib_tzinfo *timelib_parse_tzfile(const char *timezone, const timelib_tzdb *t |
|
|
|
*error_code = TIMELIB_ERROR_NO_ERROR; |
|
|
|
- if (seek_to_tz_position(&tzf, timezone, tzdb)) { |
|
+ if (seek_to_tz_position(&tzf, timezone, &memmap, &maplen, tzdb)) { |
|
tmp = timelib_tzinfo_ctor(timezone); |
|
|
|
version = read_preamble(&tzf, tmp, &type); |
|
@@ -712,11 +1276,38 @@ timelib_tzinfo *timelib_parse_tzfile(const char *timezone, const timelib_tzdb *t |
|
return NULL; |
|
} |
|
|
|
+#ifdef HAVE_SYSTEM_TZDATA |
|
+ if (memmap) { |
|
+ const struct location_info *li; |
|
+ |
|
+ /* TZif-style - grok the location info from the system database, |
|
+ * if possible. */ |
|
+ |
|
+ if ((li = find_zone_info(system_location_table, timezone)) != NULL) { |
|
+ tmp->location.comments = timelib_strdup(li->comment); |
|
+ strncpy(tmp->location.country_code, li->code, 2); |
|
+ tmp->location.longitude = li->longitude; |
|
+ tmp->location.latitude = li->latitude; |
|
+ tmp->bc = 1; |
|
+ } |
|
+ else { |
|
+ set_default_location_and_comments(&tzf, tmp); |
|
+ } |
|
+ |
|
+ /* Now done with the mmap segment - discard it. */ |
|
+ if (memmap != internal_utc) { |
|
+ munmap(memmap, maplen); |
|
+ } |
|
+ } else { |
|
+#endif |
|
if (type == TIMELIB_TZINFO_PHP) { |
|
read_location(&tzf, tmp); |
|
} else { |
|
set_default_location_and_comments(&tzf, tmp); |
|
} |
|
+#ifdef HAVE_SYSTEM_TZDATA |
|
+ } |
|
+#endif |
|
} else { |
|
*error_code = TIMELIB_ERROR_NO_SUCH_TIMEZONE; |
|
tmp = NULL; |
|
diff --git a/ext/date/php_date.c b/ext/date/php_date.c |
|
index 48c82bf7ec..443299c089 100644 |
|
--- a/ext/date/php_date.c |
|
+++ b/ext/date/php_date.c |
|
@@ -490,7 +490,11 @@ PHP_MINFO_FUNCTION(date) |
|
php_info_print_table_row(2, "date/time support", "enabled"); |
|
php_info_print_table_row(2, "timelib version", TIMELIB_ASCII_VERSION); |
|
php_info_print_table_row(2, "\"Olson\" Timezone Database Version", tzdb->version); |
|
+#ifdef HAVE_SYSTEM_TZDATA |
|
+ php_info_print_table_row(2, "Timezone Database", "system"); |
|
+#else |
|
php_info_print_table_row(2, "Timezone Database", php_date_global_timezone_db_enabled ? "external" : "internal"); |
|
+#endif |
|
php_info_print_table_row(2, "Default timezone", guess_timezone(tzdb)); |
|
php_info_print_table_end(); |
|
|
|
|