Time difference functions.

[openssl.git] / crypto / asn1 / a_time.c

diff --git a/crypto/asn1/a_time.c b/crypto/asn1/a_time.c
index 1cf886757355b46e528b23d56f9c98b368f0859f..d7925bf80ab53bafcd6c0513c6e3980c4fc57c93 100644 (file)
--- a/crypto/asn1/a_time.c
+++ b/crypto/asn1/a_time.c
@@ -66,6 +66,7 @@
 #include "cryptlib.h"
 #include "o_time.h"
 #include <openssl/asn1t.h>
+#include "asn1_locl.h"
 
 IMPLEMENT_ASN1_MSTRING(ASN1_TIME, B_ASN1_TIME)
 
@@ -197,64 +198,32 @@ int ASN1_TIME_set_string(ASN1_TIME *s, const char *str)
        return 1;
        }
 
-#if 0
-static int asn1_time_to_tm(struct tm *tm, const ASN1_TIME *s)
+static int asn1_time_to_tm(struct tm *tm, const ASN1_TIME *t)
        {
-       const unsigned char *p;
-
-       if (!ASN1_TIME_check(s))
-               return 0;
-
-       memset(tm, 0 ,sizeof tm);
-       p = s->data;
-
-#define g2(p) (((p)[0] - '0') * 10 + ((p)[1] - '0'))
-       if (s->type == V_ASN1_GENERALIZEDTIME)
-               {
-               int yr = g2(p) * 100 + g2(p + 2);
-               if (yr < 1900)
-                       return 0;
-               tm->tm_year = yr - 1900;
-               p += 4;
-               }
-       else
-               {
-               tm->tm_year=g2(p);
-               if(tm->tm_year < 50)
-                       tm->tm_year+=100;
-               p += 2;
-               }
-       tm->tm_mon=g2(p)-1;
-       tm->tm_mday=g2(p + 2);
-       tm->tm_hour=g2(p + 4);
-       tm->tm_min=g2(p + 6);
-       p += 8;
-       /* Seconds optional in UTCTime */
-       if (s->type == V_ASN1_GENERALIZEDTIME || (*p >= '0' && *p <= '9'))
-               {
-               tm->tm_sec=g2(p);
-               p += 2;
-               }
-       else
-               tm->tm_sec = 0;
-       if (s->type == V_ASN1_GENERALIZEDTIME)
+       if (t == NULL)
                {
-               /* Skip any fractional seconds */
-               if (*p == '.')
-                       {
-                       p++;
-                       while (*p >= '0' && *p <= '9')
-                               p++;
-                       }
-               }
-       /* Timezone */
-       if(*p != 'Z')
-               {
-               int off_sec = g2(p + 1) * 3600 + g2(p + 3) * 60;
-               if(*p == '-')
-                       off_sec = -off_sec;
-               OPENSSL_gmtime_adj(tm, 0, off_sec);
+               time_t now_t;
+               time(&now_t);
+               if (OPENSSL_gmtime(&now_t, tm))
+                       return 1;
+               return 0;
                }
-       return 1;
+               
+       if (t->type == V_ASN1_UTCTIME)
+               return asn1_utctime_to_tm(tm, t);
+       else if (t->type == V_ASN1_GENERALIZEDTIME)
+               return asn1_generalizedtime_to_tm(tm, t);
+
+       return 0;
        }
-#endif
+
+int ASN1_TIME_diff(int *pday, int *psec,
+                       const ASN1_TIME *from, const ASN1_TIME *to)
+       {
+       struct tm tm_from, tm_to;
+       if (!asn1_time_to_tm(&tm_from, from))
+               return 0;
+       if (!asn1_time_to_tm(&tm_to, to))
+               return 0;
+       return OPENSSL_gmtime_diff(pday, psec, &tm_from, &tm_to);
+       }