109 lines
2.5 KiB
C
109 lines
2.5 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* exec_cmd.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: lderidde <lderidde@student.s19.be> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2025/02/12 10:00:08 by lderidde #+# #+# */
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/* Updated: 2025/02/12 13:31:03 by lderidde ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "../../includes/minishell.h"
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int count_cmds(t_ast_n **pline)
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{
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int i;
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i = 0;
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if (!pline || !*pline)
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return (0);
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while (pline[i])
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i++;
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return (i);
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}
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char *find_path(char *cmd, char **env)
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{
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char *tmp;
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char *path;
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char **paths;
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int i;
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if (access(cmd, F_OK) == 0 && access(cmd, X_OK) == 0)
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return (cmd);
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i = 0;
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while (env[i] && ft_strnstr(env[i], "PATH=", 5) == NULL)
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i++;
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if (!env[i])
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return (NULL);
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paths = ft_split(env[i] + 5, ":");
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i = -1;
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while (paths[++i])
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{
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tmp = ft_strjoin(paths[i], "/");
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path = ft_strjoin(tmp, cmd);
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free(tmp);
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if (access(path, F_OK) == 0)
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return (free_tab(paths), path);
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free(path);
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}
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free_tab(paths);
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return (NULL);
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}
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void return_error(char *arg, char *msg, int code, t_ast_n *node)
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{
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ft_fprintf(2, "%s: %s\n", arg, msg);
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free_child(node->msh);
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exit(code);
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}
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int exec(t_ast_n *node)
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{
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char *path;
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expand_node(node);
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path = find_path(node->cmd, node->msh->env);
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if (!path)
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return_error(node->cmd, "command not found", 127, node);
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if (access(path, X_OK) != 0)
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return_error(path, "Permission denied", 126, node);
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if (execve(path, node->args, node->msh->env) == -1)
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{
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free_child(node->msh);
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perror("execve");
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exit(1);
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}
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return (0);
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}
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int exec_scmd(t_ast_n *node)
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{
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pid_t pid;
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int status;
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if (!node->cmd)
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return (0);
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else if (is_builtin(node->cmd))
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return (exec_builtin(node));
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else
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{
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pid = fork();
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if (pid == 0)
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exec(node);
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else if (pid > 0)
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{
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waitpid(pid, &status, 0);
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if (WIFEXITED(status))
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return (WEXITSTATUS(status));
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else
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return (1);
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}
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else
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perror("fork");
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return (1);
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}
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}
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