42 lines
1.1 KiB
C++
42 lines
1.1 KiB
C++
#include "elfspy/SPY.h"
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#include "elfspy/Fake.h"
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#include <time.h>
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#include <string.h>
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#include <unistd.h>
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#include <iostream>
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int main(int argc, char** argv)
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{
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spy::initialise(argc, argv);
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time_t time_diff = 0;
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auto time_spy = SPY(&time);
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auto time_changer = [&time_diff, &time_spy](time_t* tloc) -> time_t {
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time_t fake_time = time_spy.invoke_real(tloc) + time_diff; // call time(time_t*) in libc
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if (tloc) {
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*tloc = fake_time;
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}
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return fake_time;
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};
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auto time_fake = spy::fake(time_spy, time_changer);
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// relive Y2K
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struct tm false_time;
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memset(&false_time, 0, sizeof(false_time));
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false_time.tm_sec = 58;
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false_time.tm_min = 59;
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false_time.tm_hour = 23;
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false_time.tm_mday = 31;
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false_time.tm_mon = 11;
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false_time.tm_year = 1999 - 1900;
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false_time.tm_isdst = -1;
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time_t in_the_past = mktime(&false_time);
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time_t now = time(nullptr);
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time_diff = in_the_past - now; // set the time_changer difference
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time_t reported_time = time(nullptr);
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std::cout << ctime(&reported_time) << std::endl;
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sleep(4);
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reported_time = time(nullptr);
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std::cout << ctime(&reported_time) << std::endl;
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return 0;
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}
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