-
Notifications
You must be signed in to change notification settings - Fork 0
/
ft_minishell_builtin_env_exec.c
138 lines (123 loc) · 3.14 KB
/
ft_minishell_builtin_env_exec.c
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
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_minishell_builtin_env_exec.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: jtaylor <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2019/08/07 21:27:05 by jtaylor #+# #+# */
/* Updated: 2019/08/09 14:27:08 by jtaylor ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
/*
** this is a copy of ft_minishell_exec but modified to take a char** for
** instead of the g_env variable
*/
static int env_minishell_run_command(char *path, char **args, char **envv)
{
pid_t pid;
pid = fork();
signal(SIGINT, process_signal_handle);
if (pid == 0)
{
(execve(path, args, envv) == -1) ? exit(0) : 0;
}
else if (pid < 0)
{
ft_putstr("Fork filed -- create new process\n");
return (-1);
}
wait(&pid);
return (1);
}
/*
** check for builtin commands
*/
static int env_minishell_check_builtins(char *str)
{
int i;
i = 0;
while ((unsigned long)i < sizeof(*g_minishell_builtin_list))
{
if (g_minishell_builtin_list[i][0] == '\0')
break ;
if (ft_strcmp(str, g_minishell_builtin_list[i]) == 0)
return (i);
else
i++;
}
return (-1);
}
static char *env_ft_strjoin_path(char *s1, char *s2, int opt)
{
int i;
char *tmp;
(void)opt;
i = 0;
if (s1 == NULL || s2 == NULL)
return (NULL);
while (s1[i])
i++;
if (s1[i - 1] != '/')
tmp = ft_strjoin_free(s1, "/", 0);
tmp = ft_strjoin_free(tmp, s2, 1);
return (tmp);
}
/*
** check $path
*/
static int env_check_path(char **command_list, char *command_name,
char **envv)
{
int i;
char *binary_path;
char **path_array;
struct stat s;
path_array = ft_strsplit(get_env_variable("PATH"), ':');
i = -1;
while (path_array && path_array[++i])
{
if (ft_strstart_w_str(command_name, path_array[i]))
binary_path = ft_strdup(command_name);
else
binary_path = env_ft_strjoin_path(path_array[i], command_name, 0);
if (lstat(binary_path, &s) == -1)
free(binary_path);
else
{
env_minishell_run_command(binary_path, command_list, envv);
ft_freestrarr(path_array);
free(binary_path);
return (1);
}
}
ft_freestrarr(path_array);
return (0);
}
/*
** the string is already split so we can skip that part
*/
int env_minishell_execute(char **command_list, char **envv)
{
char **str;
int i;
struct stat l;
str = command_list;
if ((i = (env_minishell_check_builtins(str[0]))) != -1)
{
g_builtin_jumptable[i](str, str[0]);
}
else if (env_check_path(str, str[0], envv))
{
;
}
else
{
if (lstat(str[0], &l) == 0)
env_minishell_run_command(str[0], str, envv);
else
ft_dprintf(2, "%s: command not found\n", str[0]);
}
return (0);
}