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Time difference functions.

Browse source 
Backport of ASN1_TIME_diff and OPENSSL_gmtime_diff functions from master
branch.
This commit is contained in:
Dr. Stephen Henson 2012-11-19 15:12:07 +00:00
parent aaaa18392d
commit 904348a492
9 changed files with 257 additions and 131 deletions
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4
CHANGES
View file

@ -4,6 +4,10 @@
Changes between 1.0.1 and 1.0.2 [xx XXX xxxx]
*) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
difference in days and seconds between two tm or ASN1_TIME structures.
[Steve Henson]
*) Add -rev test option to s_server to just reverse order of characters
received by client and send back to server. Also prints an abbreviated
summary of the connection parameters.

54
crypto/asn1/a_gentm.c
View file

@ -63,6 +63,7 @@
#include "cryptlib.h"
#include "o_time.h"
#include <openssl/asn1.h>
#include "asn1_locl.h"
#if 0
@ -115,7 +116,7 @@ err:
#endif
int ASN1_GENERALIZEDTIME_check(ASN1_GENERALIZEDTIME *d)
int asn1_generalizedtime_to_tm(struct tm *tm, const ASN1_GENERALIZEDTIME *d)
{
static const int min[9]={ 0, 0, 1, 1, 0, 0, 0, 0, 0};
static const int max[9]={99, 99,12,31,23,59,59,12,59};
@ -135,7 +136,12 @@ int ASN1_GENERALIZEDTIME_check(ASN1_GENERALIZEDTIME *d)
{
if ((i == 6) && ((a[o] == 'Z') ||
(a[o] == '+') || (a[o] == '-')))
{ i++; break; }
{
i++;
if (tm)
tm->tm_sec = 0;
break;
}
if ((a[o] < '0') || (a[o] > '9')) goto err;
n= a[o]-'0';
if (++o > l) goto err;
@ -145,6 +151,33 @@ int ASN1_GENERALIZEDTIME_check(ASN1_GENERALIZEDTIME *d)
if (++o > l) goto err;
if ((n < min[i]) || (n > max[i])) goto err;
if (tm)
{
switch(i)
{
case 0:
tm->tm_year = n * 100 - 1900;
break;
case 1:
tm->tm_year += n;
break;
case 2:
tm->tm_mon = n - 1;
break;
case 3:
tm->tm_mday = n;
break;
case 4:
tm->tm_hour = n;
break;
case 5:
tm->tm_min = n;
break;
case 6:
tm->tm_sec = n;
break;
}
}
}
/* Optional fractional seconds: decimal point followed by one
* or more digits.
@ -163,6 +196,7 @@ int ASN1_GENERALIZEDTIME_check(ASN1_GENERALIZEDTIME *d)
o++;
else if ((a[o] == '+') || (a[o] == '-'))
{
int offsign = a[o] == '-' ? -1 : 1, offset = 0;
o++;
if (o+4 > l) goto err;
for (i=7; i<9; i++)
@ -173,10 +207,19 @@ int ASN1_GENERALIZEDTIME_check(ASN1_GENERALIZEDTIME *d)
if ((a[o] < '0') || (a[o] > '9')) goto err;
n=(n*10)+ a[o]-'0';
if ((n < min[i]) || (n > max[i])) goto err;
if (tm)
{
if (i == 7)
offset = n * 3600;
else if (i == 8)
offset += n * 60;
}
o++;
}
if (offset && !OPENSSL_gmtime_adj(tm, 0, offset * offsign))
return 0;
}
else
else if (a[o])
{
/* Missing time zone information. */
goto err;
@ -186,6 +229,11 @@ err:
return(0);
}
int ASN1_GENERALIZEDTIME_check(const ASN1_GENERALIZEDTIME *d)
{
return asn1_generalizedtime_to_tm(NULL, d);
}
int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str)
{
ASN1_GENERALIZEDTIME t;

83
crypto/asn1/a_time.c
View file

@ -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))
if (t == NULL)
{
time_t now_t;
time(&now_t);
if (OPENSSL_gmtime(&now_t, tm))
return 1;
return 0;
}
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);
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)
{
/* 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);
}
return 1;
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);
}

98
crypto/asn1/a_utctm.c
View file

@ -61,6 +61,7 @@
#include "cryptlib.h"
#include "o_time.h"
#include <openssl/asn1.h>
#include "asn1_locl.h"
#if 0
int i2d_ASN1_UTCTIME(ASN1_UTCTIME *a, unsigned char **pp)
@ -112,7 +113,7 @@ err:
#endif
int ASN1_UTCTIME_check(ASN1_UTCTIME *d)
int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d)
{
static const int min[8]={ 0, 1, 1, 0, 0, 0, 0, 0};
static const int max[8]={99,12,31,23,59,59,12,59};
@ -129,7 +130,12 @@ int ASN1_UTCTIME_check(ASN1_UTCTIME *d)
{
if ((i == 5) && ((a[o] == 'Z') ||
(a[o] == '+') || (a[o] == '-')))
{ i++; break; }
{
i++;
if (tm)
tm->tm_sec = 0;
break;
}
if ((a[o] < '0') || (a[o] > '9')) goto err;
n= a[o]-'0';
if (++o > l) goto err;
@ -139,11 +145,36 @@ int ASN1_UTCTIME_check(ASN1_UTCTIME *d)
if (++o > l) goto err;
if ((n < min[i]) || (n > max[i])) goto err;
if (tm)
{
switch(i)
{
case 0:
tm->tm_year = n < 50 ? n + 100 : n;
break;
case 1:
tm->tm_mon = n - 1;
break;
case 2:
tm->tm_mday = n;
break;
case 3:
tm->tm_hour = n;
break;
case 4:
tm->tm_min = n;
break;
case 5:
tm->tm_sec = n;
break;
}
}
}
if (a[o] == 'Z')
o++;
else if ((a[o] == '+') || (a[o] == '-'))
{
int offsign = a[o] == '-' ? -1 : 1, offset = 0;
o++;
if (o+4 > l) goto err;
for (i=6; i<8; i++)
@ -154,12 +185,26 @@ int ASN1_UTCTIME_check(ASN1_UTCTIME *d)
if ((a[o] < '0') || (a[o] > '9')) goto err;
n=(n*10)+ a[o]-'0';
if ((n < min[i]) || (n > max[i])) goto err;
if (tm)
{
if (i == 6)
offset = n * 3600;
else if (i == 7)
offset += n * 60;
}
o++;
}
if (offset && !OPENSSL_gmtime_adj(tm, 0, offset * offsign))
return 0;
}
return(o == l);
return o == l;
err:
return(0);
return 0;
}
int ASN1_UTCTIME_check(const ASN1_UTCTIME *d)
{
return asn1_utctime_to_tm(NULL, d);
}
int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str)
@ -242,39 +287,26 @@ ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t,
int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t)
{
struct tm *tm;
struct tm data;
int offset;
int year;
struct tm stm, ttm;
int day, sec;
#define g2(p) (((p)[0]-'0')*10+(p)[1]-'0')
if (!asn1_utctime_to_tm(&stm, s))
return -2;
if (s->data[12] == 'Z')
offset=0;
else
{
offset = g2(s->data+13)*60+g2(s->data+15);
if (s->data[12] == '-')
offset = -offset;
}
if (!OPENSSL_gmtime(&t, &ttm))
return -2;
t -= offset*60; /* FIXME: may overflow in extreme cases */
tm = OPENSSL_gmtime(&t, &data);
#define return_cmp(a,b) if ((a)<(b)) return -1; else if ((a)>(b)) return 1
year = g2(s->data);
if (year < 50)
year += 100;
return_cmp(year, tm->tm_year);
return_cmp(g2(s->data+2) - 1, tm->tm_mon);
return_cmp(g2(s->data+4), tm->tm_mday);
return_cmp(g2(s->data+6), tm->tm_hour);
return_cmp(g2(s->data+8), tm->tm_min);
return_cmp(g2(s->data+10), tm->tm_sec);
#undef g2
#undef return_cmp
if (!OPENSSL_gmtime_diff(&day, &sec, &stm, &ttm))
return -2;
if (day > 0)
return 1;
if (day < 0)
return -1;
if (sec > 0)
return 1;
if (sec < 0)
return -1;
return 0;
}

6
crypto/asn1/asn1.h
View file

@ -839,7 +839,7 @@ int ASN1_INTEGER_cmp(const ASN1_INTEGER *x, const ASN1_INTEGER *y);
DECLARE_ASN1_FUNCTIONS(ASN1_ENUMERATED)
int ASN1_UTCTIME_check(ASN1_UTCTIME *a);
int ASN1_UTCTIME_check(const ASN1_UTCTIME *a);
ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s,time_t t);
ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t,
int offset_day, long offset_sec);
@ -849,11 +849,13 @@ int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t);
time_t ASN1_UTCTIME_get(const ASN1_UTCTIME *s);
#endif
int ASN1_GENERALIZEDTIME_check(ASN1_GENERALIZEDTIME *a);
int ASN1_GENERALIZEDTIME_check(const ASN1_GENERALIZEDTIME *a);
ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s,time_t t);
ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s,
time_t t, int offset_day, long offset_sec);
int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str);
int ASN1_TIME_diff(int *pday, int *psec,
const ASN1_TIME *from, const ASN1_TIME *to);
DECLARE_ASN1_FUNCTIONS(ASN1_OCTET_STRING)
ASN1_OCTET_STRING * ASN1_OCTET_STRING_dup(const ASN1_OCTET_STRING *a);

3
crypto/asn1/asn1_locl.h
View file

@ -58,6 +58,9 @@
/* Internal ASN1 structures and functions: not for application use */
int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d);
int asn1_generalizedtime_to_tm(struct tm *tm, const ASN1_GENERALIZEDTIME *d);
/* ASN1 print context structure */
struct asn1_pctx_st

2
crypto/asn1/x_crl.c
View file

@ -58,8 +58,8 @@
#include <stdio.h>
#include "cryptlib.h"
#include "asn1_locl.h"
#include <openssl/asn1t.h>
#include "asn1_locl.h"
#include <openssl/x509.h>
#include <openssl/x509v3.h>

136
crypto/o_time.c
View file

@ -234,9 +234,76 @@ struct tm *OPENSSL_gmtime(const time_t *timer, struct tm *result)
static long date_to_julian(int y, int m, int d);
static void julian_to_date(long jd, int *y, int *m, int *d);
static int julian_adj(const struct tm *tm, int off_day, long offset_sec,
long *pday, int *psec);
int OPENSSL_gmtime_adj(struct tm *tm, int off_day, long offset_sec)
{
int time_sec, time_year, time_month, time_day;
long time_jd;
/* Convert time and offset into julian day and seconds */
if (!julian_adj(tm, off_day, offset_sec, &time_jd, &time_sec))
return 0;
/* Convert Julian day back to date */
julian_to_date(time_jd, &time_year, &time_month, &time_day);
if (time_year < 1900 || time_year > 9999)
return 0;
/* Update tm structure */
tm->tm_year = time_year - 1900;
tm->tm_mon = time_month - 1;
tm->tm_mday = time_day;
tm->tm_hour = time_sec / 3600;
tm->tm_min = (time_sec / 60) % 60;
tm->tm_sec = time_sec % 60;
return 1;
}
int OPENSSL_gmtime_diff(int *pday, int *psec,
const struct tm *from, const struct tm *to)
{
int from_sec, to_sec, diff_sec;
long from_jd, to_jd, diff_day;
if (!julian_adj(from, 0, 0, &from_jd, &from_sec))
return 0;
if (!julian_adj(to, 0, 0, &to_jd, &to_sec))
return 0;
diff_day = to_jd - from_jd;
diff_sec = to_sec - from_sec;
/* Adjust differences so both positive or both negative */
if (diff_day > 0 && diff_sec < 0)
{
diff_day--;
diff_sec += SECS_PER_DAY;
}
if (diff_day < 0 && diff_sec > 0)
{
diff_day++;
diff_sec -= SECS_PER_DAY;
}
if (pday)
*pday = (int)diff_day;
if (psec)
*psec = diff_sec;
return 1;
}
/* Convert tm structure and offset into julian day and seconds */
static int julian_adj(const struct tm *tm, int off_day, long offset_sec,
long *pday, int *psec)
{
int offset_hms, offset_day;
long time_jd;
int time_year, time_month, time_day;
@ -274,26 +341,11 @@ int OPENSSL_gmtime_adj(struct tm *tm, int off_day, long offset_sec)
if (time_jd < 0)
return 0;
/* Convert Julian day back to date */
julian_to_date(time_jd, &time_year, &time_month, &time_day);
if (time_year < 1900 || time_year > 9999)
return 0;
/* Update tm structure */
tm->tm_year = time_year - 1900;
tm->tm_mon = time_month - 1;
tm->tm_mday = time_day;
tm->tm_hour = offset_hms / 3600;
tm->tm_min = (offset_hms / 60) % 60;
tm->tm_sec = offset_hms % 60;
*pday = time_jd;
*psec = offset_hms;
return 1;
}
}
/* Convert date to and from julian day
* Uses Fliegel & Van Flandern algorithm
@ -345,28 +397,42 @@ int main(int argc, char **argv)
int check_time(long offset)
{
struct tm tm1, tm2;
struct tm tm1, tm2, o1;
int off_day, off_sec;
long toffset;
time_t t1, t2;
time(&t1);
t2 = t1 + offset;
OPENSSL_gmtime(&t2, &tm2);
OPENSSL_gmtime(&t1, &tm1);
o1 = tm1;
OPENSSL_gmtime_adj(&tm1, 0, offset);
if ((tm1.tm_year == tm2.tm_year) &&
(tm1.tm_mon == tm2.tm_mon) &&
(tm1.tm_mday == tm2.tm_mday) &&
(tm1.tm_hour == tm2.tm_hour) &&
(tm1.tm_min == tm2.tm_min) &&
(tm1.tm_sec == tm2.tm_sec))
return 1;
fprintf(stderr, "TIME ERROR!!\n");
fprintf(stderr, "Time1: %d/%d/%d, %d:%02d:%02d\n",
tm2.tm_mday, tm2.tm_mon + 1, tm2.tm_year + 1900,
tm2.tm_hour, tm2.tm_min, tm2.tm_sec);
fprintf(stderr, "Time2: %d/%d/%d, %d:%02d:%02d\n",
tm1.tm_mday, tm1.tm_mon + 1, tm1.tm_year + 1900,
tm1.tm_hour, tm1.tm_min, tm1.tm_sec);
return 0;
if ((tm1.tm_year != tm2.tm_year) ||
(tm1.tm_mon != tm2.tm_mon) ||
(tm1.tm_mday != tm2.tm_mday) ||
(tm1.tm_hour != tm2.tm_hour) ||
(tm1.tm_min != tm2.tm_min) ||
(tm1.tm_sec != tm2.tm_sec))
{
fprintf(stderr, "TIME ERROR!!\n");
fprintf(stderr, "Time1: %d/%d/%d, %d:%02d:%02d\n",
tm2.tm_mday, tm2.tm_mon + 1, tm2.tm_year + 1900,
tm2.tm_hour, tm2.tm_min, tm2.tm_sec);
fprintf(stderr, "Time2: %d/%d/%d, %d:%02d:%02d\n",
tm1.tm_mday, tm1.tm_mon + 1, tm1.tm_year + 1900,
tm1.tm_hour, tm1.tm_min, tm1.tm_sec);
return 0;
}
OPENSSL_gmtime_diff(&o1, &tm1, &off_day, &off_sec);
toffset = (long)off_day * SECS_PER_DAY + off_sec;
if (offset != toffset)
{
fprintf(stderr, "TIME OFFSET ERROR!!\n");
fprintf(stderr, "Expected %ld, Got %ld (%d:%d)\n",
offset, toffset, off_day, off_sec);
return 0;
}
return 1;
}
#endif

2
crypto/o_time.h
View file

@ -63,5 +63,7 @@
struct tm *OPENSSL_gmtime(const time_t *timer, struct tm *result);
int OPENSSL_gmtime_adj(struct tm *tm, int offset_day, long offset_sec);
int OPENSSL_gmtime_diff(int *pday, int *psec,
const struct tm *from, const struct tm *to);
#endif