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Diffstat (limited to 'openssl/crypto/o_time.c')
| -rw-r--r-- | openssl/crypto/o_time.c | 372 |
1 files changed, 372 insertions, 0 deletions
diff --git a/openssl/crypto/o_time.c b/openssl/crypto/o_time.c new file mode 100644 index 00000000..9030fdef --- /dev/null +++ b/openssl/crypto/o_time.c @@ -0,0 +1,372 @@ +/* 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). + * + */ + +#include <openssl/e_os2.h> +#include <string.h> +#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 <libdtdef.h> +# include <lib$routines.h> +# include <lnmdef.h> +# include <starlet.h> +# include <descrip.h> +# include <stdlib.h> +# endif /* ndef VMS_GMTIME_OK */ +#endif + +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; +#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$trnlnm(0, &tabnam, &lognam, 0, itemlist); + if (!(status & 1)) + return NULL; + logvalue[reslen] = '\0'; + + t = *timer; + +/* The following is extracted from the DEC C header time.h */ +/* +** Beginning in OpenVMS Version 7.0 mktime, time, ctime, strftime +** have two implementations. One implementation is provided +** for compatibility and deals with time in terms of local time, +** the other __utc_* deals with time in terms of UTC. +*/ +/* We use the same conditions as in said time.h to check if we should + assume that t contains local time (and should therefore be adjusted) + or UTC (and should therefore be left untouched). */ +#if __CRTL_VER < 70000000 || defined _VMS_V6_SOURCE + /* Get the numerical value of the equivalence string */ + status = atoi(logvalue); + + /* and use it to move time to GMT */ + t -= status; +#endif + + /* then convert the result to the time structure */ + + /* Since there was no gmtime_r() to do this stuff for us, + we have to do it the hard way. */ + { + /* The VMS epoch is the astronomical Smithsonian date, + if I remember correctly, which is November 17, 1858. + Furthermore, time is measure in thenths of microseconds + and stored in quadwords (64 bit integers). unix_epoch + below is January 1st 1970 expressed as a VMS time. The + following code was used to get this number: + + #include <stdio.h> + #include <stdlib.h> + #include <lib$routines.h> + #include <starlet.h> + + 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; + } + } +#endif + return ts; + } + +/* 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. + */ + +#define SECS_PER_DAY (24 * 60 * 60) + +static long date_to_julian(int y, int m, int d); +static void julian_to_date(long jd, int *y, int *m, int *d); + +int OPENSSL_gmtime_adj(struct tm *tm, int off_day, long offset_sec) + { + 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; + + /* 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; + + return 1; + +} + +/* 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; +} + +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 <stdio.h> + +/* 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; + time_t t1, t2; + time(&t1); + t2 = t1 + offset; + OPENSSL_gmtime(&t2, &tm2); + OPENSSL_gmtime(&t1, &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; + } + +#endif |