From c6a3d03dcde0df7894da8f2d63516ad149238792 Mon Sep 17 00:00:00 2001
From: david <david@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Sat, 24 Oct 2009 05:18:20 +0000
Subject: [PATCH] FIx SSL certificate date parsing to subtract 1 from the month
 to fit the convention of a struct tm. The bug was reported by Matt Selsky.

---
 nse_ssl_cert.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/nse_ssl_cert.cc b/nse_ssl_cert.cc
index 1417d5bc5..9e58339b2 100644
--- a/nse_ssl_cert.cc
+++ b/nse_ssl_cert.cc
@@ -280,6 +280,10 @@ static int time_to_tm(const ASN1_TIME *t, struct tm *result)
   }
 
   result->tm_mon = parse_int(p, 2);
+  /* struct tm uses zero-indexed months. */
+  if (result->tm_mon == 0)
+    return -1;
+  result->tm_mon--;
   result->tm_mday = parse_int(p + 2, 2);
   result->tm_hour = parse_int(p + 4, 2);
   result->tm_min = parse_int(p + 6, 2);
@@ -302,6 +306,7 @@ static void tm_to_table(lua_State *L, const struct tm *tm)
 
   lua_pushnumber(L, tm->tm_year);
   lua_setfield(L, -2, "year");
+  /* Lua uses one-indexed months. */
   lua_pushnumber(L, tm->tm_mon + 1);
   lua_setfield(L, -2, "month");
   lua_pushnumber(L, tm->tm_mday);