diff options
Diffstat (limited to 'util/miscutil.c')
| -rw-r--r-- | util/miscutil.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/util/miscutil.c b/util/miscutil.c index 4244ccce0..b0a6410e8 100644 --- a/util/miscutil.c +++ b/util/miscutil.c @@ -19,6 +19,7 @@ */ #include <config.h> +#include <stdlib.h> #include <stdio.h> #include <string.h> #include <time.h> @@ -30,12 +31,55 @@ #include "util.h" #include "i18n.h" +/**************** + * I know that the OpenPGP protocol has a Y2106 problem ;-) + */ u32 make_timestamp() { return time(NULL); } +/**************** + * Scan a date string and return a timestamp. + * The only supported format is "yyyy-mm-dd" + * Returns 0 for an invalid date. + */ +u32 +scan_isodatestr( const char *string ) +{ + int year, month, day; + struct tm tmbuf; + time_t stamp; + int i; + + if( strlen(string) != 10 || string[4] != '-' || string[7] != '-' ) + return 0; + for( i=0; i < 4; i++ ) + if( !isdigit(string[i]) ) + return 0; + if( !isdigit(string[5]) || !isdigit(string[6]) ) + return 0; + if( !isdigit(string[8]) || !isdigit(string[9]) ) + return 0; + year = atoi(string); + month = atoi(string+5); + day = atoi(string+8); + /* some basic checks */ + if( year < 1970 || month < 1 || month > 12 || day < 1 || day > 31 ) + return 0; + memset( &tmbuf, 0, sizeof tmbuf ); + tmbuf.tm_mday = day; + tmbuf.tm_mon = month-1; + tmbuf.tm_year = year - 1900; + tmbuf.tm_isdst = -1; + stamp = mktime( &tmbuf ); + if( stamp == (time_t)-1 ) + return 0; + return stamp; +} + + u32 add_days_to_timestamp( u32 stamp, u16 days ) { |