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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_e_externs_pipes.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: rbousset <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/02/14 17:19:27 by rbousset #+# #+# */
/* Updated: 2020/02/14 17:19:29 by rbousset ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include <sys/wait.h>
#include <libft.h>
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
#include "ft_e_externs_next.h"
#include "ft_m_redirs.h"
#include "ft_s_destroy.h"
#include "ft_s_lcom.h"
#include "ft_s_struct.h"
static void
ft_e_extern_child(const char *fullpath,
t_lcom *ptr,
t_msh *msh)
{
ft_dup_redirs(ptr, msh);
execve(fullpath, ptr->argv, msh->envp);
/* TODO: handle execve failed */
}
static void
ft_exec_path(const char *fullpath[],
struct s_lpipes *ptr,
t_msh *msh)
{
/* TODO: norme */
pid_t pid;
int32_t pipefd[2];
int32_t status;
pipe(pipefd);
if ((pid = fork()) == 0)
{
close(pipefd[0]);
dup2(pipefd[1], STDOUT_FILENO);
ft_e_extern_child(fullpath[0], ptr->one, msh);
}
else if (pid < 0)
{
/* TODO: handle fork failed */
}
else
{
if ((pid = fork()) == 0)
{
close(pipefd[1]);
dup2(pipefd[0], STDIN_FILENO);
ft_e_extern_child(fullpath[1], ptr->next->one, msh);
}
else
{
close(pipefd[0]);
close(pipefd[1]);
waitpid(-1, &status, 0);
}
waitpid(-1, &status, 0);
msh->ret = WEXITSTATUS(status);
}
}
void
ft_e_externs_pipes(struct s_lpipes *ptr,
t_msh *msh)
{
char **envpath;
char **fullpath;
size_t i;
if (!(fullpath = (char**)malloc(3 * sizeof(char*))))
return ;
fullpath[2] = NULL;
i = 0;
while (i < 2)
{
if (ft_ischarset("/.", ptr->one->com[0]))
{
if (!(fullpath[i] = ft_strdup(ptr->one->com)))
return ;
}
else if ((envpath = ft_get_env_path(msh)) != NULL)
{
fullpath[i] = ft_search_in_path(ptr->one->com, envpath, msh);
ft_delwords(envpath);
}
/* TODO: deal if not found etc */
ptr = ptr->next;
i++;
}
ft_exec_path((const char**)fullpath, ptr, msh);
ft_delwords(fullpath);
}
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