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tools/context/time-key.c
55 строк
945 B
HD Moore
Add new context-keyed encoders from Dimitris Glynos ( http://census-labs.com/news/2010/06/04/athcon-2010-update/ )
09 июн 2010, 20:43
09 июн 2010, 20:43
74a6813
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/* * Outputs the value of time(2) with the 16 least significant bits zeroed out. * For use in context keyed payload encoding. * * Author: Dimitris Glynos <dimitris at census-labs.com> */ #include <stdlib.h> #include <stdio.h> #define __USE_XOPEN #include <time.h> char *app = NULL; void croak_usage(void) { fprintf(stderr, "usage: %s [date & time]\n" "\tSupported date & time format: 'YYYY-MM-DD HH:MM:SS'\n" "\te.g. %s '2003-11-04 14:23:10'\n", app, app); exit(1); } time_t parse_time(const char *input) { struct tm t; char *p; p = strptime(input, "%Y-%m-%d %H:%M:%S", &t); if ((!p) || (*p != '\0')) { fprintf(stderr, "error while processing time spec!\n"); croak_usage(); } return mktime(&t); } int main(int argc, char *argv[]) { time_t t; app = argv[0]; if (argc > 2) croak_usage(); if (argc == 2) t = parse_time(argv[1]); else t = time(NULL); printf("%#.8lx\n", t & 0xffff0000); return 0; }