76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* builtin_env.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: gwojda <gwojda@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2017/03/22 16:20:31 by gwojda #+# #+# */
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/* Updated: 2017/03/24 15:11:42 by jhalford ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "minishell.h"
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#define ENV_USAGE "env [-i] [name=value]... [utility [argument...]]"
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#define ENV_NOFILE "env: %s: No such file or directory"
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#define ENV_NOPERM "env: %s: Permission denied"
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t_cliopts g_env_opts[] =
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{
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{'i', NULL, BT_ENV_LI, 0, bt_env_geti},
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{0, 0, 0, 0, 0},
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};
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int bt_env_geti(char ***av, t_env_data *data)
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{
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if (!av || !*av || !data)
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return (1);
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while (**av && ft_strchr(**av, '='))
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{
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data->custom_env = ft_sstradd(data->custom_env, **av);
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++(*av);
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}
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--(*av);
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return (0);
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}
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static int bt_env_parse(t_env_data *data, char **av)
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{
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data->flag = 0;
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data->av_data = NULL;
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data->custom_env = NULL;
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if (cliopts_get(av, g_env_opts, data))
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return (1);
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return (0);
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}
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int builtin_env(const char *path,
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char *const argv[], char *const envp[])
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{
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t_env_data data;
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int status;
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pid_t pid;
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struct stat buf;
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(void)envp;
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if (bt_env_parse(&data, (char**)argv))
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return (ft_perror("env") && SH_ERR("usage: %s", ENV_USAGE) ? 0 : 0);
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else if (!*data.av_data)
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return (builtin_setenv(NULL, (char*[]){"setenv", 0}, NULL));
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else if ((pid = fork()) == 0)
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{
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if (!(path = ft_strchr(data.av_data[0], '/') ?
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ft_strdup(data.av_data[0]) : ft_hash(data.av_data[0]))
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|| access(path, F_OK) != 0)
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exit(SH_ERR(ENV_NOFILE, data.av_data[0]));
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stat(path, &buf);
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if (S_ISDIR(buf.st_mode) || access(path, X_OK) != 0)
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exit(SH_ERR(ENV_NOPERM, data.av_data[0]));
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execve(path, data.av_data, data.custom_env);
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}
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waitpid(pid, &status, 0);
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ft_sstrfree(data.custom_env);
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tcsetpgrp(STDIN, data_singleton()->jobc.shell_pgid);
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return (0);
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}
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