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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_e_externs.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 <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include "ft_f_file.h"
#include "ft_e_externs_next.h"
#include "ft_s_lcom.h"
#include "ft_s_struct.h"
#include "ft_s_destroy.h"
static void
ft_dup_redirs(const t_lcom *ptr,
t_msh *msh)
{
int32_t fd;
if (ptr->redir == -1)
{
if ((fd = open(ptr->rdrpath, O_RDONLY)) == -1)
ft_f_file(ptr->rdrpath, msh);
/* TODO: handle < redir */
}
if (ptr->redir == 1)
{
if ((fd = open(ptr->rdrpath,
O_CREAT | O_TRUNC | O_WRONLY, 0644)) == -1)
ft_f_file(ptr->rdrpath, msh);
dup2(fd, STDOUT_FILENO);
close(fd);
}
if (ptr->redir == 2)
{
if ((fd = open(ptr->rdrpath,
O_CREAT | O_APPEND | O_WRONLY, 0644)) == -1)
ft_f_file(ptr->rdrpath, msh);
dup2(fd, STDOUT_FILENO);
close(fd);
}
}
static void
ft_e_extern_child(const char *fullpath,
t_lcom *ptr,
t_msh *msh)
{
int32_t ret;
ft_dup_redirs(ptr, msh);
ret = execve(fullpath, ptr->argv, NULL);
/* TODO: handle execve failed */
ft_lcom_clear(&msh->curr);
ft_s_destroy(msh);
exit(ret);
}
static void
ft_exec_path(const char fullpath[],
t_lcom *ptr,
t_msh *msh)
{
pid_t pid;
int32_t status;
if ((pid = fork()) == 0)
{
ft_e_extern_child(fullpath, ptr, msh);
}
else if (pid < 0)
{
/* TODO: handle fork failed */
}
else
{
while (wait(&status) != pid)
;
msh->ret = WEXITSTATUS(status);
}
}
void
ft_e_extern(t_lcom *ptr,
t_msh *msh)
{
char **envpath;
char *fullpath;
if (ft_ischarset("/.", ptr->com[0]))
{
/* TODO: ft_get_absolute_path(ptr->com); */
}
else if ((envpath = ft_get_env_path(msh)) != NULL)
{
fullpath = ft_search_in_path(ptr->com, envpath, msh);
/* TODO: exec $PATH stuff */
ft_delwords(envpath);
}
/* TODO: deal if not found etc */
ft_exec_path(fullpath, ptr, msh);
ft_memdel((void*)&fullpath);
}
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