90 lines
1.8 KiB
C
90 lines
1.8 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/wait.h>
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#define MAX_LENGTH 200
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char** u_get_input(char* buffer, char* user_input, int i);
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int main()
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{
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char *buffer = (char *) malloc(MAX_LENGTH);
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char *user_input1 = (char *) malloc(MAX_LENGTH);
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char *user_input2 = (char *) malloc(MAX_LENGTH);
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int pid1, pid2;
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int my_pipe[2];
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int t = pipe(my_pipe);
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if (t == -1)
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{
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printf("erreur à la création du pipe");
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return 1;
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}
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char **args1 = u_get_input(buffer, user_input1, 1);
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char **args2 = NULL;
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while (strcmp(user_input1, "exit") != 0)
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{
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args2 = u_get_input(buffer, user_input2, 2);
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pid1 = fork();
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if (!pid1)
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{
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dup2(my_pipe[1], STDOUT_FILENO);
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close(my_pipe[0]);
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close(my_pipe[1]);
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execvp(user_input1, args1);
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return 0;
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}
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else {
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pid2 = fork();
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if (!pid2)
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{
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dup2(my_pipe[0], STDIN_FILENO);
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close(my_pipe[1]);
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close(my_pipe[0]);
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execvp(user_input2, args2);
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return 0;
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}
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else
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{
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close(my_pipe[0]);
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close(my_pipe[1]);
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waitpid(pid2, NULL, 0);
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}
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}
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free(args1);
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free(args2);
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args1 = u_get_input(buffer, user_input1, 1);
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pipe(my_pipe);
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}
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free(args1);
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free(buffer);
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free(user_input1);
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free(user_input2);
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return 0;
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}
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char** u_get_input(char* buffer, char* user_input, int j)
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{
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printf("\ncommande%d> ", j);
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memset(buffer, 0, MAX_LENGTH);
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memset(user_input, 0, MAX_LENGTH);
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fgets(buffer, MAX_LENGTH, stdin);
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strncpy(user_input, buffer, strlen(buffer)-1);
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char *token = strtok(user_input, " ");
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char **args = (char **) malloc(MAX_LENGTH);
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int i = 0;
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while (token != NULL && i < MAX_LENGTH)
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{
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args[i] = token;
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i++;
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token = strtok(NULL, " ");
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}
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return args;
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}
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