1318 without restofthesignals

#include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <err.h>
#include <sys/sem.h>

key_t key1, key2, key3;           // klucz dla semaforow
int   semid1, semid2, semid3;   // ID semaforow
union semun ctl;            // unia do kontroli semafora
int pid1, pid2, pid3, ppid;
FILE* input;
FILE* temporary;
int pdes[2];


union semun
{
    int val;
    struct semid_ds *buf;
    unsigned short int *array;
    struct seminfo *__buf;
};

int semlock(int semid)
{

    struct sembuf opr;
    opr.sem_num =  0;
    opr.sem_op  = -1;
    opr.sem_flg =  0;

    if (semop(semid, &opr, 1) == -1){
        warn("Blad blokowania semafora!");
        return 0;
    }else{
        return 1;
    }
}

int semunlock(int semid)
{
    struct sembuf opr;

    opr.sem_num = 0;
    opr.sem_op  = 1;
    opr.sem_flg = 0;

    if (semop(semid, &opr, 1) == -1)
    {
        warn("Blad odblokowania semafora!");
        return 0;
    }
    else
    {
        return 1;
    }
}
void charToHex(unsigned char c, char * hex) {
	sprintf(hex, "%x", c);
}
void process1Interactive() {
	char data[256] = "\n\0";	char c; int i;
	while(1){
	    sleep(1);
		fprintf(stderr, "\nPodaj dane (EXIT, by wyjsc):");
		fgets(data,256,stdin);
		if( strcmp( data , "EXIT\n" ) == 0 ) break;
		i = 0;
		while(data[i]!= '\n'){
			semlock(semid1);
			fputc(data[i], temporary);
			fflush(temporary);
			fseek(temporary, -1, SEEK_CUR);
			i++;
			semunlock(semid2);
		}
	}
	fprintf(stderr,"\nKoniec wczytywania danych");
	kill(getpid(), 1);
}
void process1File() {
	char c; int i;
	while((c = fgetc(input))!= EOF) {
		semlock(semid1);
		fputc(c, temporary);
		fflush(temporary);
		fseek(temporary, -1, SEEK_CUR);
		semunlock(semid2);
	}
	fprintf(stderr,"\nKoniec wczytywania danych");
	kill(getpid(), 1);
}
void process1Random() {

	unsigned char c; int i;
	while((c = fgetc(input))!= EOF) {
		semlock(semid1);
		fputc(c, temporary);
		fflush(temporary);
		fseek(temporary, -1, SEEK_CUR);
		semunlock(semid2);
	}

}
void process2() {
	unsigned char c;
	char hex[3];
	close(pdes[0]);
	while(1) {
		semlock(semid2);
		c = fgetc(temporary);
		charToHex(c, hex);
		write(pdes[1], hex, sizeof(hex));
		semunlock(semid3);
	}
}
void process3() {
	unsigned char c;  char heks[3]; int k = 0;
	close(pdes[1]);
	while(1) {
		semlock(semid3);
		read(pdes[0], heks, sizeof(heks));
		fprintf(stderr, "%s ", heks);
		k++;
		if( k == 15 ) {
			fprintf(stderr,"\n");
			k = 0;
		}
		semunlock(semid1);
	}

}
void signalHandler(int signal) {
    if(signal == 2) {
		fprintf(stderr, "\nZabijam proces o pid %d", getpid());
		exit(0);
	}
	else if(signal == 1) { // getpid() == pid1 &&
		kill(pid2, 2);
		kill(pid3, 2);
		kill(ppid, 2);
		kill(pid1, 2);
	}

}
void signalMotherHandler(int signal) {
	if(signal == 2 ) {
	    fprintf(stderr, "\nZabijam proces macierzysty o pid: %d", ppid);
		close((int)input);
		close((int)temporary);
		remove("file");
		exit(0);
	}
}
void signalInit() {
	signal(1, signalHandler);
	signal(2, signalHandler);

}
int main(int argc, char **argv)
{									//////////////
    if ((key1 = ftok(".", 'A')) == -1)
        errx(1, "Blad tworzenia klucza!");
    if ((semid1 = semget(key1, 1, IPC_CREAT | 0600)) == -1)
        errx(2, "Blad tworzenia semafora!");
    ctl.val = 1;
    if (semctl(semid1, 0, SETVAL, ctl) == -1)
        errx(3, "Blad ustawiania semafora!");

    if ((key2 = ftok(".", 'B')) == -1)
        errx(1, "Blad tworzenia klucza!");
    if ((semid2 = semget(key2, 1, IPC_CREAT | 0600)) == -1)
        errx(2, "Blad tworzenia semafora!");
    ctl.val = 1;
    if (semctl(semid2, 0, SETVAL, ctl) == -1)
        errx(3, "Blad ustawiania semafora!");

	if ((key3 = ftok(".", 'C')) == -1)
        errx(1, "Blad tworzenia klucza!");
    if ((semid3 = semget(key3, 1, IPC_CREAT | 0600)) == -1)
        errx(2, "Blad tworzenia semafora!");
    ctl.val = 1;
    if (semctl(semid3, 0, SETVAL, ctl) == -1)
        errx(3, "Blad ustawiania semafora!");

	semlock(semid3);
	semlock(semid2);

	pipe(pdes);

	if(argc>1) {
		input = fopen(argv[1], "r");
		if(input == NULL) {
			fprintf(stderr, "Blad przy otwieraniu pliku do odczytu!");
			return -1;
		}
	}
	temporary = fopen("file", "w+");
	if(temporary == NULL) {
		fprintf(stderr, "Blad przy otwieraniu pliku do zapisu!");
		return -2;
	}

	ppid = getpid();
	fprintf(stderr, "Ppid = %d\n", ppid);
	signal(2, signalMotherHandler);

	if( fork() == 0 ) {         /////////////////////////////////////////////// proces 1 -> przekazuje dane do procesu 2 poprzez file
		pid1 = getpid();
		fprintf(stderr, "Pid1 = %d\n", pid1);
		signalInit();
		if(argc == 1) { // interaktywny
			process1Interactive();
		}
		else if( strcmp(argv[1], "/dev/urandom") == 0 ){  // random
			process1Random();
		}
		else { // plik
			process1File();
		}

	}
	else if(fork() == 0) {     /////////////////////////////////// proces 2 -> pobiera dane z procesu 1 poprzez file i przekazuje do procesu 3 poprzez pipe
		pid2 = getpid();
		fprintf(stderr, "Pid2 = %d\n", pid2);
		signalInit();
		process2();
	}
	else if(fork() == 0) {     ////////////////////////////////// proces 3 -> pobiera dane z procesu 3 poprzez pipe
		pid3 = getpid();
		fprintf(stderr, "Pid3 = %d\n", pid3);
		signalInit();
		process3();
	}

	pause();
	return 0;
}