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-rw-r--r--src/shared/time-util.c103
1 files changed, 103 insertions, 0 deletions
diff --git a/src/shared/time-util.c b/src/shared/time-util.c
index 8e5de77757..fc79c569f4 100644
--- a/src/shared/time-util.c
+++ b/src/shared/time-util.c
@@ -25,6 +25,7 @@
#include "util.h"
#include "time-util.h"
+#include "strv.h"
usec_t now(clockid_t clock_id) {
struct timespec ts;
@@ -826,3 +827,105 @@ bool ntp_synced(void) {
return true;
}
+
+int get_timezones(char ***ret) {
+ _cleanup_fclose_ FILE *f = NULL;
+ _cleanup_strv_free_ char **zones = NULL;
+ size_t n_zones = 0, n_allocated = 0;
+
+ assert(ret);
+
+ zones = strv_new("UTC", NULL);
+ if (!zones)
+ return -ENOMEM;
+
+ n_allocated = 2;
+ n_zones = 1;
+
+ f = fopen("/usr/share/zoneinfo/zone.tab", "re");
+ if (f) {
+ char l[LINE_MAX];
+
+ FOREACH_LINE(l, f, return -errno) {
+ char *p, *w;
+ size_t k;
+
+ p = strstrip(l);
+
+ if (isempty(p) || *p == '#')
+ continue;
+
+ /* Skip over country code */
+ p += strcspn(p, WHITESPACE);
+ p += strspn(p, WHITESPACE);
+
+ /* Skip over coordinates */
+ p += strcspn(p, WHITESPACE);
+ p += strspn(p, WHITESPACE);
+
+ /* Found timezone name */
+ k = strcspn(p, WHITESPACE);
+ if (k <= 0)
+ continue;
+
+ w = strndup(p, k);
+ if (!w)
+ return -ENOMEM;
+
+ if (!GREEDY_REALLOC(zones, n_allocated, n_zones + 2)) {
+ free(w);
+ return -ENOMEM;
+ }
+
+ zones[n_zones++] = w;
+ zones[n_zones] = NULL;
+ }
+
+ strv_sort(zones);
+
+ } else if (errno != ENOENT)
+ return -errno;
+
+ *ret = zones;
+ zones = NULL;
+
+ return 0;
+}
+
+bool timezone_is_valid(const char *name) {
+ bool slash = false;
+ const char *p, *t;
+ struct stat st;
+
+ if (!name || *name == 0 || *name == '/')
+ return false;
+
+ for (p = name; *p; p++) {
+ if (!(*p >= '0' && *p <= '9') &&
+ !(*p >= 'a' && *p <= 'z') &&
+ !(*p >= 'A' && *p <= 'Z') &&
+ !(*p == '-' || *p == '_' || *p == '+' || *p == '/'))
+ return false;
+
+ if (*p == '/') {
+
+ if (slash)
+ return false;
+
+ slash = true;
+ } else
+ slash = false;
+ }
+
+ if (slash)
+ return false;
+
+ t = strappenda("/usr/share/zoneinfo/", name);
+ if (stat(t, &st) < 0)
+ return false;
+
+ if (!S_ISREG(st.st_mode))
+ return false;
+
+ return true;
+}