php/php-5.2.6-systzdata.patch
jorton c7718c0f8a * Tue Nov 4 2008 Joe Orton <jorton@redhat.com> 5.2.6-6
- move gd_README to php-gd
- update to r4 of systzdata patch; introduces a default timezone
  name of "System/Localtime", which uses /etc/localtime (#469532)
2008-11-04 11:50:34 +00:00

308 lines
7.5 KiB
Diff

Add support for use of the system timezone database, rather
than embedding a copy. Discussed upstream but was not desired.
History:
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
--- php-5.2.6/ext/date/lib/parse_tz.c.systzdata
+++ php-5.2.6/ext/date/lib/parse_tz.c
@@ -20,6 +20,16 @@
#include "timelib.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"
+#endif
+
#include <stdio.h>
#ifdef HAVE_LOCALE_H
@@ -31,7 +41,10 @@
#else
#include <strings.h>
#endif
+
+#ifndef HAVE_SYSTEM_TZDATA
#include "timezonedb.h"
+#endif
#if (defined(__APPLE__) || defined(__APPLE_CC__)) && (defined(__BIG_ENDIAN__) || defined(__LITTLE_ENDIAN__))
# if defined(__LITTLE_ENDIAN__)
@@ -206,6 +219,211 @@ void timelib_dump_tzinfo(timelib_tzinfo
}
}
+#ifdef HAVE_SYSTEM_TZDATA
+
+#ifdef HAVE_SYSTEM_TZDATA_PREFIX
+#define ZONEINFO_PREFIX HAVE_SYSTEM_TZDATA_PREFIX
+#else
+#define ZONEINFO_PREFIX "/usr/share/zoneinfo"
+#endif
+
+#define SYSTEM_TZFILE "/etc/localtime"
+
+static const timelib_tzdb *timezonedb_system = 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, ".tab") == NULL;
+}
+
+/* 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);
+ db_index[index_next++].pos = 0;
+ }
+ }
+
+ free(ents[--count]);
+ }
+
+ if (count != -1) free(ents);
+ free(top);
+ } while (dirstack_top);
+
+ db->index = db_index;
+ db->index_size = index_next;
+
+ free(dirstack);
+}
+
+/* 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];
+ const char *fn;
+ struct stat st;
+ char *p;
+ int fd;
+
+ if (strcmp(timezone, TIMELIB_SYSTEM_TZID) == 0) {
+ fn = SYSTEM_TZFILE;
+ }
+ else {
+ if (strstr(timezone, "..") != NULL) {
+ return NULL;
+ }
+
+ snprintf(fname, sizeof fname, ZONEINFO_PREFIX "/%s", timezone);
+ fn = fname;
+ }
+
+ fd = open(fn, O_RDONLY);
+ if (fd == -1) {
+ return NULL;
+ } else if (fstat(fd, &st) != 0 || st.st_size < 21) {
+ 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;
+}
+
+const timelib_tzdb *timelib_builtin_db(void)
+{
+ if (timezonedb_system == NULL) {
+ timelib_tzdb *tmp = malloc(sizeof *tmp);
+
+ tmp->version = "0.system";
+ tmp->data = NULL;
+ create_zone_index(tmp);
+ timezonedb_system = tmp;
+ }
+
+ return timezonedb_system;
+}
+
+const timelib_tzdb_index_entry *timelib_timezone_builtin_identifiers_list(int *count)
+{
+ *count = timezonedb_system->index_size;
+ return timezonedb_system->index;
+}
+
+int timelib_timezone_id_is_valid(char *timezone, const timelib_tzdb *tzdb)
+{
+ char fname[PATH_MAX];
+ const char *fn;
+
+ if (strcmp(timezone, TIMELIB_SYSTEM_TZID) == 0) {
+ fn = SYSTEM_TZFILE;
+ }
+ else {
+ if (strstr(timezone, "..") != NULL) {
+ return 0;
+ }
+
+ snprintf(fname, sizeof fname, ZONEINFO_PREFIX "/%s", timezone);
+ fn = fname;
+ }
+
+ return access(fn, R_OK) == 0 ? 1 : 0;
+}
+
+timelib_tzinfo *timelib_parse_tzfile(char *timezone, const timelib_tzdb *tzdb)
+{
+ char *tzf, *orig;
+ timelib_tzinfo *tmp;
+ size_t len;
+
+ orig = map_tzfile(timezone, &len);
+ if (orig == NULL) {
+ return NULL;
+ }
+
+ tmp = timelib_tzinfo_ctor(timezone);
+
+ tzf = orig + 20;
+ read_header(&tzf, tmp);
+ read_transistions(&tzf, tmp);
+ read_types(&tzf, tmp);
+
+ munmap(orig, len);
+
+ return tmp;
+}
+#else /* !HAVE_SYSTEM_TZDATA */
+
static int seek_to_tz_position(const unsigned char **tzf, char *timezone, const timelib_tzdb *tzdb)
{
int left = 0, right = tzdb->index_size - 1;
@@ -279,6 +497,7 @@ timelib_tzinfo *timelib_parse_tzfile(cha
return tmp;
}
+#endif
static ttinfo* fetch_timezone_offset(timelib_tzinfo *tz, timelib_sll ts, timelib_sll *transition_time)
{
--- php-5.2.6/ext/date/lib/timelib.h.systzdata
+++ php-5.2.6/ext/date/lib/timelib.h
@@ -31,6 +31,10 @@
#define TIMELIB_SPECIAL_WEEKDAY 0x01
+#ifdef HAVE_SYSTEM_TZDATA
+#define TIMELIB_SYSTEM_TZID "System/Localtime"
+#endif
+
#ifndef LONG_MAX
#define LONG_MAX 2147483647L
#endif
--- php-5.2.6/ext/date/lib/timelib.m4.systzdata
+++ php-5.2.6/ext/date/lib/timelib.m4
@@ -78,3 +78,17 @@ stdlib.h
dnl Check for strtoll, atoll
AC_CHECK_FUNCS(strtoll atoll strftime)
+
+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-5.2.6/ext/date/php_date.c.systzdata
+++ php-5.2.6/ext/date/php_date.c
@@ -584,6 +584,11 @@ static char* guess_timezone(const timeli
if (DATEG(default_timezone) && (strlen(DATEG(default_timezone)) > 0) && timelib_timezone_id_is_valid(DATEG(default_timezone), tzdb)) {
return DATEG(default_timezone);
}
+#ifdef TIMELIB_SYSTEM_TZID
+ if (timelib_timezone_id_is_valid(TIMELIB_SYSTEM_TZID, tzdb)) {
+ return TIMELIB_SYSTEM_TZID;
+ }
+#endif
#if HAVE_TM_ZONE
/* Try to guess timezone from system information */
{