148 lines
3.6 KiB
C
148 lines
3.6 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* check.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: cchauvet <cchauvet@student.42angouleme.fr +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2023/03/29 17:32:06 by cchauvet #+# #+# */
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/* Updated: 2023/04/07 15:06:39 by alouis-j ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "./redirection_private.h"
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#include <stdbool.h>
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static bool ft_check_heredoc(t_data *data, t_cmd *cmd,
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char *redirection_identifier, char *redirection)
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{
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int fd;
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if (ft_strcmp(redirection_identifier, "<<") == 0)
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{
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if (cmd->fd_in[0] == -2)
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return (0);
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fd = ft_heredoc(data, redirection);
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if (fd == -2)
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return (1);
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else
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{
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if (cmd->fd_in[0] > 2)
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close(cmd->fd_in[0]);
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cmd->fd_in[0] = fd;
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}
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}
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return (0);
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}
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static bool ft_check_infile(t_data *data, t_cmd *cmd,
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char *redirection_identifier, char *redirection)
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{
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int fd;
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if (ft_strcmp(redirection_identifier, "<") == 0)
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{
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if (cmd->fd_in[0] == -2)
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return (0);
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if (ft_file_is_readable(data, redirection))
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{
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fd = open(redirection, O_RDONLY);
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if (cmd->fd_in[0] > 2)
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close(cmd->fd_in[0]);
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cmd->fd_in[0] = fd;
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}
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else
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{
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if (cmd->fd_in[0] > 2)
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close(cmd->fd_in[0]);
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cmd->fd_in[0] = -2;
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return (0);
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}
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}
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return (0);
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}
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static bool ft_check_outfile(t_data *data, t_cmd *cmd,
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char *redirection_identifier, char *redirection)
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{
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int fd;
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if (ft_strcmp(redirection_identifier, ">") == 0)
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{
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if (cmd->fd_out[0] == -2)
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return (0);
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if (ft_file_is_writable(data, redirection))
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{
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fd = open(redirection,
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O_WRONLY | O_TRUNC | O_CREAT, 0644);
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if (cmd->fd_out[0] > 2)
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close(cmd->fd_out[0]);
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cmd->fd_out[0] = fd;
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}
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else
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{
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if (cmd->fd_out[0] > 2)
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close(cmd->fd_out[0]);
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cmd->fd_out[0] = -2;
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return (0);
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}
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}
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return (0);
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}
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static bool ft_check_outfile_append(t_data *data, t_cmd *cmd,
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char *redirection_identifier, char *redirection)
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{
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int fd;
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if (ft_strcmp(redirection_identifier, ">>") == 0)
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{
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if (cmd->fd_out[0] == -2)
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return (0);
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if (ft_file_is_appendable(data, redirection))
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{
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fd = open(redirection,
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O_WRONLY | O_APPEND | O_CREAT, 0644);
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if (cmd->fd_out[0] > 2)
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close(cmd->fd_out[0]);
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cmd->fd_out[0] = fd;
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}
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else
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{
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if (cmd->fd_out[0] > 2)
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close(cmd->fd_out[0]);
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cmd->fd_out[0] = -2;
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}
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}
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return (0);
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}
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bool ft_check_redirection(t_data *data, t_cmd *cmd,
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char *redirection_identifier, char *redirection)
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{
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char *str;
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bool out;
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if (ft_is_in("<>", redirection_identifier[0])
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&& ft_is_in("<>", redirection[0]))
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{
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ft_eprintf("bozoshell: %s: invalid redirection file\n", redirection);
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return (1);
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}
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str = ft_strdup(redirection);
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if (str == NULL)
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{
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ft_eprintf("bozoshell: malloc failed\n");
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return (1);
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}
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ft_quote_remover(str);
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out = 0;
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if (ft_check_heredoc(data, cmd, redirection_identifier, str)
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|| ft_check_infile(data, cmd, redirection_identifier, str)
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|| ft_check_outfile(data, cmd, redirection_identifier, str)
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|| ft_check_outfile_append(data, cmd, redirection_identifier, str))
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out = 1;
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free(str);
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return (out);
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}
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