75 lines
1.6 KiB
C
75 lines
1.6 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <unistd.h>
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#define MAX_MSG_LEN 100
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#define LEN(a) (sizeof(a) / sizeof(a[0]))
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typedef struct {
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unsigned int t;
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char* msg;
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} Timers;
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static Timers timers[] = {
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/* timer(s) comment */
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{ 1500, "Time to start working!" },
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{ 300, "Time to start resting!" },
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{ 1500, "Time to start working!" },
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{ 300, "Time to start resting!" },
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{ 1500, "Time to start working!" },
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{ 300, "Time to start resting!" },
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{ 1500, "Time to start working!" },
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{ 900, "Time to take a longer rest!" },
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};
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void spawn(char* argv[])
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{
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if (fork() == 0) {
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// we need to fork the process so that
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// when we exit the sent screen
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// this program continues.
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setsid();
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execvp(argv[0], argv);
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perror(" failed");
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exit(0);
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}
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}
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void print_time_now()
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{
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time_t timer;
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char buffer[26];
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struct tm* tm_info;
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timer = time(NULL);
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tm_info = localtime(&timer);
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strftime(buffer, 26, "%Y-%m-%d %H:%M:%S", tm_info);
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fprintf(stderr, "%s", buffer);
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}
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void display_message(char* msg)
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{
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char sh_command[MAX_MSG_LEN];
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snprintf(sh_command, MAX_MSG_LEN, "echo '%s' | sent", msg); // NOLINT: We are being carefull here by considering MAX_MSG_LEN explicitly.
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printf("%s", sh_command);
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char* spawn_args[] = {
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"/bin/sh",
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"-c",
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sh_command,
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NULL
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};
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spawn(spawn_args);
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print_time_now();
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fprintf(stderr, " | %s\n", msg);
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}
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int main(int argc, char* argv[])
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{
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for (int i = 0;; i = (i + 1) % LEN(timers)) {
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display_message(timers[i].msg);
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sleep(timers[i].t);
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}
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}
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