1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* 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;
char arg[2][256];
ft_strlcpy(arg[0], "/bin/ls -l", ft_strlen("/bin/ls -l"));
arg[0][2] = '\0';
arg[1][0] = 0;
(void)fullpath;
(void)ptr;
ft_dup_redirs(ptr, msh);
ret = execve("/bin/ls", (char *const*)arg, msh->envp);
/* 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);
}
|
