+++ /dev/null
-/*
-
- silctime.c
-
- Author: Pekka Riikonen <priikone@silcnet.org>
-
- Copyright (C) 2003 - 2007 Pekka Riikonen
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; version 2 of the License.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
-*/
-
-#include "silc.h"
-
-/* Fills the SilcTime structure with correct values */
-
-static SilcBool silc_time_fill(SilcTime time,
- unsigned int year,
- unsigned int month,
- unsigned int day,
- unsigned int hour,
- unsigned int minute,
- unsigned int second,
- unsigned int msec)
-{
- if (year > (1 << 15))
- goto err;
- if (month < 1 || month > 12)
- goto err;
- if (day < 1 || day > 31)
- goto err;
- if (hour > 23)
- goto err;
- if (minute > 60)
- goto err;
- if (second > 61)
- goto err;
- if (msec > 1000)
- goto err;
-
- time->year = year;
- time->month = month;
- time->day = day;
- time->hour = hour;
- time->minute = minute;
- time->second = second;
- time->msecond = msec;
-
- return TRUE;
-
- err:
- silc_set_errno(SILC_ERR_BAD_TIME);
- return FALSE;
-}
-
-/* Return time since Epoch */
-
-SilcInt64 silc_time(void)
-{
- return (SilcInt64)time(NULL);
-}
-
-/* Return time since Epoch in milliseconds */
-
-SilcInt64 silc_time_msec(void)
-{
- struct timeval curtime;
- silc_gettimeofday(&curtime);
- return (curtime.tv_sec * (SilcUInt64)1000) +
- (curtime.tv_usec / (SilcUInt64)1000);
-}
-
-/* Return time since Epoch in microseconds */
-
-SilcInt64 silc_time_usec(void)
-{
- struct timeval curtime;
- if (silc_gettimeofday(&curtime))
- silc_set_errno_posix(errno);
- return (curtime.tv_sec * (SilcUInt64)1000000) + curtime.tv_usec;
-}
-
-/* Returns time as string */
-
-const char *silc_time_string(SilcInt64 time_val)
-{
- time_t curtime;
- char *return_time;
-
- if (!time_val)
- curtime = silc_time();
- else
- curtime = (time_t)time_val;
- return_time = ctime(&curtime);
- if (!return_time) {
- silc_set_errno(SILC_ERR_BAD_TIME);
- return NULL;
- }
- return_time[strlen(return_time) - 1] = '\0';
-
- return (const char *)return_time;
-}
-
-/* Returns time as SilcTime structure */
-
-SilcBool silc_time_value(SilcInt64 time_val, SilcTime ret_time)
-{
- struct tm *t;
- unsigned int msec = 0;
- time_t timeval;
- SilcInt32 ctz = 0;
-
- if (!ret_time)
- return TRUE;
-
- if (!time_val)
- time_val = silc_time_msec();
-
- msec = (SilcUInt64)time_val % (SilcUInt64)1000;
- timeval = (time_t)((SilcUInt64)time_val / (SilcUInt64)1000);
-
- t = localtime(&timeval);
- if (!t) {
- silc_set_errno(SILC_ERR_BAD_TIME);
- return FALSE;
- }
-
- memset(ret_time, 0, sizeof(*ret_time));
- if (!silc_time_fill(ret_time, t->tm_year + 1900, t->tm_mon + 1,
- t->tm_mday, t->tm_hour, t->tm_min,
- t->tm_sec, msec))
- return FALSE;
-
- ret_time->dst = t->tm_isdst ? 1 : 0;
-
-#ifdef SILC_WIN32
- ret_time->utc_east = _timezone < 0 ? 1 : 0;
- ret_time->utc_hour = (ret_time->utc_east ? (-(_timezone)) / 3600 :
- _timezone / 3600);
- ret_time->utc_minute = (ret_time->utc_east ? (-(_timezone)) % 3600 :
- _timezone % 3600);
-#else
-#if defined(HAVE_TIMEZONE)
- ret_time->utc_east = timezone < 0 ? 1 : 0;
- ctz = timezone;
- if (ret_time->dst)
- ctz -= 3600;
-#elif defined(HAVE_TM_GMTOFF)
- ret_time->utc_east = t->tm_gmtoff > 0 ? 1 : 0;
- ctz = -t->tm_gmtoff;
-#elif defined(HAVE___TM_GMTOFF)
- ret_time->utc_east = t->__tm_gmtoff > 0 ? 1 : 0;
- ctz = -t->__tm_gmtoff;
-#elif defined(HAVE___TM_GMTOFF__)
- ret_time->utc_east = t->__tm_gmtoff__ > 0 ? 1 : 0;
- ctz = -t->__tm_gmtoff__;
-#endif /* HAVE_TIMEZONE */
-
- ret_time->utc_hour = (ret_time->utc_east ? (-(ctz)) / 3600 : ctz / 3600);
- ret_time->utc_minute = (ret_time->utc_east ? (-(ctz)) % 3600 : ctz % 3600);
-#endif /* SILC_WIN32 */
-
- if (ret_time->utc_minute)
- ret_time->utc_minute /= 60;
-
- return TRUE;
-}
-
-/* Returns timezone */
-
-SilcBool silc_timezone(char *timezone, SilcUInt32 timezone_size)
-{
- SilcTimeStruct curtime;
-
- if (timezone_size < 6) {
- silc_set_errno(SILC_ERR_INVALID_ARGUMENT);
- return FALSE;
- }
-
- if (!silc_time_value(0, &curtime))
- return FALSE;
-
- if (!curtime.utc_hour && curtime.utc_minute)
- silc_snprintf(timezone, timezone_size, "Z");
- else if (curtime.utc_minute)
- silc_snprintf(timezone, timezone_size, "%c%02d:%02d",
- curtime.utc_east ? '+' : '-', curtime.utc_hour,
- curtime.utc_minute);
- else
- silc_snprintf(timezone, timezone_size, "%c%02d",
- curtime.utc_east ? '+' : '-', curtime.utc_hour);
-
- return TRUE;
-}
-
-/* Returns time from universal time string into SilcTime */
-
-SilcBool silc_time_universal(const char *universal_time, SilcTime ret_time)
-{
- int ret;
- unsigned int year, month, day, hour = 0, minute = 0, second = 0;
- unsigned char z = 0;
-
- if (!ret_time)
- return TRUE;
- memset(ret_time, 0, sizeof(*ret_time));
-
- /* Parse the time string */
- ret = sscanf(universal_time, "%02u%02u%02u%02u%02u%02u%c", &year, &month,
- &day, &hour, &minute, &second, &z);
- if (ret < 3) {
- SILC_LOG_DEBUG(("Invalid UTC time string"));
- silc_set_errno_reason(SILC_ERR_BAD_TIME, "Invalid UTC time string");
- return FALSE;
- }
-
- /* Fill the SilcTime structure */
- ret = silc_time_fill(ret_time, year, month, day, hour, minute, second, 0);
- if (!ret) {
- SILC_LOG_DEBUG(("Incorrect values in UTC time string"));
- return FALSE;
- }
-
- /* Check timezone */
- if (z == '-' || z == '+') {
- ret = sscanf(universal_time + (ret * 2) + 1, "%02u%02u", &hour, &minute);
- if (ret != 2) {
- SILC_LOG_DEBUG(("Malformed UTC time string"));
- silc_set_errno_reason(SILC_ERR_BAD_TIME, "Malformed UTC time string");
- return FALSE;
- }
-
- if (hour > 23 || minute > 60) {
- silc_set_errno(SILC_ERR_BAD_TIME);
- return FALSE;
- }
-
- ret_time->utc_hour = hour;
- ret_time->utc_minute = minute;
- ret_time->utc_east = (z == '-') ? 0 : 1;
- } else if (z != 'Z') {
- SILC_LOG_DEBUG(("Invalid timezone"));
- silc_set_errno_reason(SILC_ERR_BAD_TIME, "Invalid timezone");
- return FALSE;
- }
-
- /* UTC year must be fixed since it's represented only as YY not YYYY. */
- ret_time->year += 1900;
- if (ret_time->year < 1950)
- ret_time->year += 100;
-
- return TRUE;
-}
-
-/* Encode universal time string. */
-
-SilcBool silc_time_universal_string(SilcTime time_val, char *ret_string,
- SilcUInt32 ret_string_size)
-{
- int ret, len = 0;
-
- memset(ret_string, 0, ret_string_size);
- ret = silc_snprintf(ret_string, ret_string_size - 1,
- "%02u%02u%02u%02u%02u%02u",
- time_val->year % 100, time_val->month, time_val->day,
- time_val->hour, time_val->minute, time_val->second);
- if (ret < 0)
- return FALSE;
- len += ret;
-
- if (!time_val->utc_hour && !time_val->utc_minute) {
- ret = silc_snprintf(ret_string + len, ret_string_size - 1 - len, "Z");
- if (ret < 0)
- return FALSE;
- len += ret;
- } else {
- ret = silc_snprintf(ret_string + len, ret_string_size - 1 - len,
- "%c%02u%02u", time_val->utc_east ? '+' : '-',
- time_val->utc_hour, time_val->utc_minute);
- if (ret < 0)
- return FALSE;
- len += ret;
- }
-
- return TRUE;
-}
-
-/* Returns time from generalized time string into SilcTime */
-
-SilcBool silc_time_generalized(const char *generalized_time, SilcTime ret_time)
-{
- int ret, i;
- unsigned int year, month, day, hour = 0, minute = 0, second = 0;
- unsigned int msecond = 0;
- unsigned char z = 0;
-
- if (!ret_time)
- return TRUE;
- memset(ret_time, 0, sizeof(*ret_time));
-
- /* Parse the time string */
- ret = sscanf(generalized_time, "%04u%02u%02u%02u%02u%02u", &year, &month,
- &day, &hour, &minute, &second);
- if (ret < 3) {
- SILC_LOG_DEBUG(("Invalid generalized time string"));
- silc_set_errno_reason(SILC_ERR_BAD_TIME, "Invalid generalized time string");
- return FALSE;
- }
-
- /* Fill the SilcTime structure */
- ret = silc_time_fill(ret_time, year, month, day, hour, minute, second, 0);
- if (!ret) {
- SILC_LOG_DEBUG(("Incorrect values in generalized time string"));
- return FALSE;
- }
-
- /* Check fractions of second and/or timezone */
- i = ret * 4;
- ret = sscanf(generalized_time + i, "%c", &z);
- if (ret != 1) {
- SILC_LOG_DEBUG(("Malformed generalized time string"));
- silc_set_errno_reason(SILC_ERR_BAD_TIME,
- "Malformed generalized time string");
- return FALSE;
- }
-
- if (z == '.') {
- /* Take fractions of second */
- int l;
- i++;
- ret = sscanf(generalized_time + i, "%u%n", &msecond, &l);
- if (ret != 1) {
- SILC_LOG_DEBUG(("Malformed generalized time string"));
- silc_set_errno_reason(SILC_ERR_BAD_TIME,
- "Malformed generalized time string");
- return FALSE;
- }
- while (l > 4) {
- msecond /= 10;
- l--;
- }
- ret_time->msecond = msecond;
- i += l;
-
- /* Read optional timezone */
- if (strlen(generalized_time) < i)
- sscanf(generalized_time + i, "%c", &z);
- }
-
- /* Check timezone if present */
- if (z == '-' || z == '+') {
- ret = sscanf(generalized_time + i + 1, "%02u%02u", &hour, &minute);
- if (ret != 2) {
- SILC_LOG_DEBUG(("Malformed generalized time string"));
- silc_set_errno_reason(SILC_ERR_BAD_TIME,
- "Malformed generalized time string");
- return FALSE;
- }
-
- if (hour > 23 || minute > 60) {
- silc_set_errno(SILC_ERR_BAD_TIME);
- return FALSE;
- }
-
- ret_time->utc_hour = hour;
- ret_time->utc_minute = minute;
- ret_time->utc_east = (z == '-') ? 0 : 1;
- }
-
- return TRUE;
-}
-
-/* Encode generalized time string */
-
-SilcBool silc_time_generalized_string(SilcTime time_val, char *ret_string,
- SilcUInt32 ret_string_size)
-{
- int len = 0, ret;
- memset(ret_string, 0, ret_string_size);
- ret = silc_snprintf(ret_string, ret_string_size - 1,
- "%04u%02u%02u%02u%02u%02u",
- time_val->year, time_val->month,
- time_val->day, time_val->hour,
- time_val->minute, time_val->second);
- if (ret < 0)
- return FALSE;
- len += ret;
-
- if (time_val->msecond) {
- ret = silc_snprintf(ret_string + len, ret_string_size - 1 - len,
- ".%lu", (unsigned long)time_val->msecond);
- if (ret < 0)
- return FALSE;
- len += ret;
- }
-
- if (!time_val->utc_hour && !time_val->utc_minute) {
- ret = silc_snprintf(ret_string + len, ret_string_size - 1 - len, "Z");
- if (ret < 0)
- return FALSE;
- len += ret;
- } else {
- ret = silc_snprintf(ret_string + len, ret_string_size - 1 - len,
- "%c%02u%02u", time_val->utc_east ? '+' : '-',
- time_val->utc_hour, time_val->utc_minute);
- if (ret < 0)
- return FALSE;
- len += ret;
- }
-
- return TRUE;
-}
-
-/* Return TRUE if `smaller' is smaller than `bigger'. */
-
-int silc_compare_timeval(struct timeval *t1, struct timeval *t2)
-{
- SilcInt32 s = t1->tv_sec - t2->tv_sec;
- if (!s)
- return t1->tv_usec - t2->tv_usec;
- return s;
-}
projects / crypto.git / blobdiff