57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
#include <stdio.h>
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#include <stdlib.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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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 display_message(char *msg){
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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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// fprintf(stderr, "%s\n", msg);
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}
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int main(int argc, char *argv[]){
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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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