Minishell/srcs/command_interpretation/command_process.c at 6dc6574e46185f7f91f58a1e19364f9a9f69218b · ShellDigitalFactory-max/Minishell · GitHub

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
/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   command_process.c                                  :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: tchobert <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2025/02/04 14:23:58 by tchobert          #+#    #+#             */
/*   Updated: 2025/02/04 14:24:11 by tchobert         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "minishell.h"

static int	setup_command_redirections(t_command *command)
{
	if (command->command_redirections.in_stream != STDIN_FILENO
		&& command->command_redirections.in_stream != -1)
	{
		dup2(command->command_redirections.in_stream, STDIN_FILENO);
		close(command->command_redirections.in_stream);
	}
	if (command->command_redirections.out_stream != STDOUT_FILENO
		&& command->command_redirections.out_stream != -1)
	{
		dup2(command->command_redirections.out_stream, STDOUT_FILENO);
		close(command->command_redirections.out_stream);
	}
	if (command->command_redirections.opening_status == OPENING_ERROR)
	{
		ft_dprintf(STDERR_FILENO, "%s\n", command->opening_failure_msg);
		return (EXIT_FAILURE);
	}
	return (EXIT_SUCCESS);
}

void	close_command_process_unused_fds(t_minishell_context *minishell_context,
			t_command *command)
{
	t_command_pipeline	cmd_pipeline;

	cmd_pipeline = minishell_context->command_session.command_pipeline;
	while (cmd_pipeline)
	{
		if (cmd_pipeline->content != command)
		{
			if (((t_command *)cmd_pipeline->content)
				->command_redirections.in_stream != -1)
			{
				close(((t_command *)cmd_pipeline->content)
					->command_redirections.in_stream);
			}
			if (((t_command *)cmd_pipeline->content)
				->command_redirections.out_stream != -1)
			{
				close(((t_command *)cmd_pipeline->content)
					->command_redirections.out_stream);
			}
		}
		cmd_pipeline = cmd_pipeline->next;
	}
}

static void	undefined_command_process(t_minishell_context *minishell_context)
{
	const int	exit_value = get_exit_status_value();

	clean_command_process(minishell_context);
	exit(exit_value);
}

void	command_process(t_minishell_context *minishell_context,
			t_command *command)
{
	close_command_process_unused_fds(minishell_context, command);
	if (setup_command_redirections(command) == EXIT_FAILURE)
	{
		clean_command_process(minishell_context);
		exit(EXIT_FAILURE);
	}
	if (command->command_nature == UNDEFINED)
	{
		undefined_command_process(minishell_context);
	}
	if (command->command_nature == BUILTIN)
		execute_builtin(minishell_context, command, BUILTIN_IN_PIPELINE);
	if (command->command_nature == ONLY_ASSIGNATION)
	{
		add_command_env_to_shell_env(command->command_environment);
		clean_command_process(minishell_context);
		exit(SUCCESS);
	}
	if (execute_command(command) == INVALID_COMMAND)
	{
		clean_command_process(minishell_context);
		exit(COMMAND_NOT_FOUND_EXIT_STATUS);
	}
}