1 files changed, 42 insertions, 0 deletions
diff --git a/riemann.fmi.uni-sofia.bg/programs/nlogin-0.3-pre/get_tz.c b/riemann.fmi.uni-sofia.bg/programs/nlogin-0.3-pre/get_tz.c
new file mode 100644
index 0000000..94b42e1
--- /dev/null
+++ b/riemann.fmi.uni-sofia.bg/programs/nlogin-0.3-pre/get_tz.c
@@ -0,0 +1,42 @@
+#include <unistd.h>
+#include <fcntl.h>
+#include "parselib.h"
+
+static struct state s;
+
+static int parse(unsigned char *x) 
+  {return (x[0]<<24) | (x[1]<<16) | (x[2]<<8) | x[3];}
+
+static time_t time_offset(time_t *t, int forward) {
+  unsigned char *T = (unsigned char *)s.buffirst, *tmp,*x;
+  size_t L = s.buflen;
+  time_t i, k, res, tzh_timecnt;
+  if (!T || L<44) return 0;
+  tzh_timecnt = parse(T+32);
+  tmp=T+44;
+  x=tmp+tzh_timecnt*4;
+  for (i=tzh_timecnt-1; 0<=i; --i) {
+    k = parse(tmp+i*4);
+    if (forward) if (*t < k) continue;
+
+    res = parse(x +tzh_timecnt +6*(unsigned char)x[i]);
+
+    if (forward) return res;
+    else 
+      if (k+res <= *t) return -res;
+  }
+  return 0;
+}
+
+time_t get_tz(time_t *t, int forward) /*EXTRACT_INCL*/{
+  if (forward==-1) {
+    __end_parse(&s);
+    s.cur=0;
+    return 0;
+  }
+  if (!s.cur) {
+    __prepare_parse("/etc/localtime",&s);
+    s.cur=1;    
+  }
+  return time_offset(t,forward);
+}