X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fo_time.c;h=369023250545d79c2c5072ba7ccba348ef1c6db6;hp=b78f5ca6304b19f6032e09bc28234a275a5bf5e7;hb=a3b0d466930ec45bc3ddf4c9e853d73d37783f44;hpb=46a6cec6998b84d85240dfb99af235c8a0854a31 diff --git a/crypto/o_time.c b/crypto/o_time.c index b78f5ca630..3690232505 100644 --- a/crypto/o_time.c +++ b/crypto/o_time.c @@ -1,231 +1,59 @@ -/* crypto/o_time.c -*- mode:C; c-file-style: "eay" -*- */ -/* Written by Richard Levitte (richard@levitte.org) for the OpenSSL - * project 2001. - */ -/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL - * project 2008. - */ -/* ==================================================================== - * Copyright (c) 2001 The OpenSSL Project. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * 3. All advertising materials mentioning features or use of this - * software must display the following acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" - * - * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to - * endorse or promote products derived from this software without - * prior written permission. For written permission, please contact - * licensing@OpenSSL.org. - * - * 5. Products derived from this software may not be called "OpenSSL" - * nor may "OpenSSL" appear in their names without prior written - * permission of the OpenSSL Project. - * - * 6. Redistributions of any form whatsoever must retain the following - * acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" - * - * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY - * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR - * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * ==================================================================== - * - * This product includes cryptographic software written by Eric Young - * (eay@cryptsoft.com). This product includes software written by Tim - * Hudson (tjh@cryptsoft.com). +/* + * Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved. * + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html */ #include #include -#include "o_time.h" - -#ifdef OPENSSL_SYS_VMS -# if __CRTL_VER >= 70000000 && \ - (defined _POSIX_C_SOURCE || !defined _ANSI_C_SOURCE) -# define VMS_GMTIME_OK -# endif -# ifndef VMS_GMTIME_OK -# include -# include -# include -# include -# include -# include -# endif /* ndef VMS_GMTIME_OK */ -#endif +#include struct tm *OPENSSL_gmtime(const time_t *timer, struct tm *result) - { - struct tm *ts = NULL; - -#if defined(OPENSSL_THREADS) && !defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_SYS_OS2) && (!defined(OPENSSL_SYS_VMS) || defined(gmtime_r)) && !defined(OPENSSL_SYS_MACOSX) && !defined(OPENSSL_SYS_SUNOS) - /* should return &data, but doesn't on some systems, - so we don't even look at the return value */ - gmtime_r(timer,result); - ts = result; -#elif !defined(OPENSSL_SYS_VMS) || defined(VMS_GMTIME_OK) - ts = gmtime(timer); - if (ts == NULL) - return NULL; - - memcpy(result, ts, sizeof(struct tm)); - ts = result; +{ + struct tm *ts = NULL; + +#if defined(OPENSSL_THREADS) && defined(OPENSSL_SYS_VMS) + { + /* + * On VMS, gmtime_r() takes a 32-bit pointer as second argument. + * Since we can't know that |result| is in a space that can easily + * translate to a 32-bit pointer, we must store temporarly on stack + * and copy the result. The stack is always reachable with 32-bit + * pointers. + */ +#if defined(OPENSSL_SYS_VMS) && __INITIAL_POINTER_SIZE +# pragma pointer_size save +# pragma pointer_size 32 #endif -#if defined( OPENSSL_SYS_VMS) && !defined( VMS_GMTIME_OK) - if (ts == NULL) - { - static $DESCRIPTOR(tabnam,"LNM$DCL_LOGICAL"); - static $DESCRIPTOR(lognam,"SYS$TIMEZONE_DIFFERENTIAL"); - char logvalue[256]; - unsigned int reslen = 0; - struct { - short buflen; - short code; - void *bufaddr; - unsigned int *reslen; - } itemlist[] = { - { 0, LNM$_STRING, 0, 0 }, - { 0, 0, 0, 0 }, - }; - int status; - time_t t; - - /* Get the value for SYS$TIMEZONE_DIFFERENTIAL */ - itemlist[0].buflen = sizeof(logvalue); - itemlist[0].bufaddr = logvalue; - itemlist[0].reslen = &reslen; - status = sys$trnlnm(0, &tabnam, &lognam, 0, itemlist); - if (!(status & 1)) - return NULL; - logvalue[reslen] = '\0'; - - t = *timer; - -/* The following is extracted from the DEC C header time.h */ -/* -** Beginning in OpenVMS Version 7.0 mktime, time, ctime, strftime -** have two implementations. One implementation is provided -** for compatibility and deals with time in terms of local time, -** the other __utc_* deals with time in terms of UTC. -*/ -/* We use the same conditions as in said time.h to check if we should - assume that t contains local time (and should therefore be adjusted) - or UTC (and should therefore be left untouched). */ -#if __CRTL_VER < 70000000 || defined _VMS_V6_SOURCE - /* Get the numerical value of the equivalence string */ - status = atoi(logvalue); - - /* and use it to move time to GMT */ - t -= status; + struct tm data, *ts2 = &data; +#if defined OPENSSL_SYS_VMS && __INITIAL_POINTER_SIZE +# pragma pointer_size restore #endif - - /* then convert the result to the time structure */ - - /* Since there was no gmtime_r() to do this stuff for us, - we have to do it the hard way. */ - { - /* The VMS epoch is the astronomical Smithsonian date, - if I remember correctly, which is November 17, 1858. - Furthermore, time is measure in thenths of microseconds - and stored in quadwords (64 bit integers). unix_epoch - below is January 1st 1970 expressed as a VMS time. The - following code was used to get this number: - - #include - #include - #include - #include - - main() - { - unsigned long systime[2]; - unsigned short epoch_values[7] = - { 1970, 1, 1, 0, 0, 0, 0 }; - - lib$cvt_vectim(epoch_values, systime); - - printf("%u %u", systime[0], systime[1]); - } - */ - unsigned long unix_epoch[2] = { 1273708544, 8164711 }; - unsigned long deltatime[2]; - unsigned long systime[2]; - struct vms_vectime - { - short year, month, day, hour, minute, second, - centi_second; - } time_values; - long operation; - - /* Turn the number of seconds since January 1st 1970 to - an internal delta time. - Note that lib$cvt_to_internal_time() will assume - that t is signed, and will therefore break on 32-bit - systems some time in 2038. - */ - operation = LIB$K_DELTA_SECONDS; - status = lib$cvt_to_internal_time(&operation, - &t, deltatime); - - /* Add the delta time with the Unix epoch and we have - the current UTC time in internal format */ - status = lib$add_times(unix_epoch, deltatime, systime); - - /* Turn the internal time into a time vector */ - status = sys$numtim(&time_values, systime); - - /* Fill in the struct tm with the result */ - result->tm_sec = time_values.second; - result->tm_min = time_values.minute; - result->tm_hour = time_values.hour; - result->tm_mday = time_values.day; - result->tm_mon = time_values.month - 1; - result->tm_year = time_values.year - 1900; - - operation = LIB$K_DAY_OF_WEEK; - status = lib$cvt_from_internal_time(&operation, - &result->tm_wday, systime); - result->tm_wday %= 7; - - operation = LIB$K_DAY_OF_YEAR; - status = lib$cvt_from_internal_time(&operation, - &result->tm_yday, systime); - result->tm_yday--; - - result->tm_isdst = 0; /* There's no way to know... */ - - ts = result; - } - } + if (gmtime_r(timer, ts2) == NULL) + return NULL; + memcpy(result, ts2, sizeof(struct tm)); + ts = result; + } +#elif defined(OPENSSL_THREADS) && !defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_SYS_MACOSX) + if (gmtime_r(timer, result) == NULL) + return NULL; + ts = result; +#else + ts = gmtime(timer); + if (ts == NULL) + return NULL; + + memcpy(result, ts, sizeof(struct tm)); + ts = result; #endif - return ts; - } + return ts; +} -/* Take a tm structure and add an offset to it. This avoids any OS issues +/* + * Take a tm structure and add an offset to it. This avoids any OS issues * with restricted date types and overflows which cause the year 2038 * problem. */ @@ -235,204 +63,134 @@ 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); + 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; +{ + 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 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 */ - /* Convert Julian day back to date */ + julian_to_date(time_jd, &time_year, &time_month, &time_day); - julian_to_date(time_jd, &time_year, &time_month, &time_day); + if (time_year < 1900 || time_year > 9999) + return 0; - if (time_year < 1900 || time_year > 9999) - return 0; + /* Update tm structure */ - /* Update tm structure */ + tm->tm_year = time_year - 1900; + tm->tm_mon = time_month - 1; + tm->tm_mday = time_day; - 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; - tm->tm_hour = time_sec / 3600; - tm->tm_min = (time_sec / 60) % 60; - tm->tm_sec = time_sec % 60; + return 1; - 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; + 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; - 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; - /* split offset into days and day seconds */ - offset_day = offset_sec / SECS_PER_DAY; - /* Avoid sign issues with % operator */ - offset_hms = offset_sec - (offset_day * SECS_PER_DAY); - offset_day += off_day; - /* Add current time seconds to offset */ - offset_hms += tm->tm_hour * 3600 + tm->tm_min * 60 + tm->tm_sec; - /* Adjust day seconds if overflow */ - if (offset_hms >= SECS_PER_DAY) - { - offset_day++; - offset_hms -= SECS_PER_DAY; - } - else if (offset_hms < 0) - { - offset_day--; - offset_hms += SECS_PER_DAY; - } - - /* Convert date of time structure into a Julian day number. - */ - - time_year = tm->tm_year + 1900; - time_month = tm->tm_mon + 1; - time_day = tm->tm_mday; - - time_jd = date_to_julian(time_year, time_month, time_day); - - /* Work out Julian day of new date */ - time_jd += offset_day; - - if (time_jd < 0) - return 0; - - *pday = time_jd; - *psec = offset_hms; - return 1; - } - + long *pday, int *psec) +{ + int offset_hms, offset_day; + long time_jd; + int time_year, time_month, time_day; + /* split offset into days and day seconds */ + offset_day = offset_sec / SECS_PER_DAY; + /* Avoid sign issues with % operator */ + offset_hms = offset_sec - (offset_day * SECS_PER_DAY); + offset_day += off_day; + /* Add current time seconds to offset */ + offset_hms += tm->tm_hour * 3600 + tm->tm_min * 60 + tm->tm_sec; + /* Adjust day seconds if overflow */ + if (offset_hms >= SECS_PER_DAY) { + offset_day++; + offset_hms -= SECS_PER_DAY; + } else if (offset_hms < 0) { + offset_day--; + offset_hms += SECS_PER_DAY; + } + + /* + * Convert date of time structure into a Julian day number. + */ + + time_year = tm->tm_year + 1900; + time_month = tm->tm_mon + 1; + time_day = tm->tm_mday; + + time_jd = date_to_julian(time_year, time_month, time_day); + + /* Work out Julian day of new date */ + time_jd += offset_day; + + if (time_jd < 0) + return 0; + + *pday = time_jd; + *psec = offset_hms; + return 1; +} -/* Convert date to and from julian day - * Uses Fliegel & Van Flandern algorithm +/* + * Convert date to and from julian day Uses Fliegel & Van Flandern algorithm */ static long date_to_julian(int y, int m, int d) { - return (1461 * (y + 4800 + (m - 14) / 12)) / 4 + - (367 * (m - 2 - 12 * ((m - 14) / 12))) / 12 - - (3 * ((y + 4900 + (m - 14) / 12) / 100)) / 4 + - d - 32075; + return (1461 * (y + 4800 + (m - 14) / 12)) / 4 + + (367 * (m - 2 - 12 * ((m - 14) / 12))) / 12 - + (3 * ((y + 4900 + (m - 14) / 12) / 100)) / 4 + d - 32075; } static void julian_to_date(long jd, int *y, int *m, int *d) - { - long L = jd + 68569; - long n = (4 * L) / 146097; - long i, j; - - L = L - (146097 * n + 3) / 4; - i = (4000 * (L + 1)) / 1461001; - L = L - (1461 * i) / 4 + 31; - j = (80 * L) / 2447; - *d = L - (2447 * j) / 80; - L = j / 11; - *m = j + 2 - (12 * L); - *y = 100 * (n - 49) + i + L; - } - -#ifdef OPENSSL_TIME_TEST - -#include - -/* Time checking test code. Check times are identical for a wide range of - * offsets. This should be run on a machine with 64 bit time_t or it will - * trigger the very errors the routines fix. - */ - -int main(int argc, char **argv) - { - long offset; - for (offset = 0; offset < 1000000; offset++) - { - check_time(offset); - check_time(-offset); - check_time(offset * 1000); - check_time(-offset * 1000); - } - } - -int check_time(long offset) - { - 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)) - { - 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 +{ + long L = jd + 68569; + long n = (4 * L) / 146097; + long i, j; + + L = L - (146097 * n + 3) / 4; + i = (4000 * (L + 1)) / 1461001; + L = L - (1461 * i) / 4 + 31; + j = (80 * L) / 2447; + *d = L - (2447 * j) / 80; + L = j / 11; + *m = j + 2 - (12 * L); + *y = 100 * (n - 49) + i + L; +}