110 lines
2.0 KiB
C
110 lines
2.0 KiB
C
#include "libftx/libftx.h"
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#include "minishell.h"
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#include "utils/utils.h"
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#include <unistd.h>
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static char *ft_get_variable(char **env, char *variable)
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{
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size_t i;
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i = 0;
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while (env[i] != NULL)
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{
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if (ft_strncmp(variable, env[i], ft_strlen(variable)) == 0)
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return (ft_strchr(env[i], '=') + 1);
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i++;
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}
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return (NULL);
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}
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static char *ft_get_executable_path(char *executable_name, char **env)
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{
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char *path;
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char *temp;
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char **tab;
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size_t i;
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path = NULL;
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if (executable_name[0] == '.' || executable_name[0] == '/')
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path = ft_strdup(executable_name);
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else
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{
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tab = ft_split(ft_get_variable(env, "PATH"), ':');
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if (tab == NULL)
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return (NULL);
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i = 0;
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while (tab[i] != NULL)
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{
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temp = ft_strmerger(3, tab[i], "/", executable_name);
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if (temp == NULL)
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{
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ft_freer_tab_ultimate(1, tab);
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free(executable_name);
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ft_eprintf("minishell: malloc failed\n");
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}
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if (access(temp, X_OK) == 0)
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{
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path = temp;
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break ;
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}
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free(temp);
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i++;
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}
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if (path == NULL)
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{
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ft_eprintf("%s: command not found\n", executable_name);
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}
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ft_freer_tab_ultimate(1, tab);
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}
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return (path);
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}
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static int ft_excutor(t_cmd *cmd, char **env)
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{
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int pid;
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int return_value;
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pid = fork();
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if (pid == -1)
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return (1);
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if (pid == 0)
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{
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dup2(cmd->fd_out, 1);
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dup2(cmd->fd_in, 0);
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execve(cmd->executable, cmd->args, env);
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}
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else
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waitpid(pid, &return_value, 0);
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return (return_value);
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}
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int ft_cmds_executor(t_list **cmds, char **env)
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{
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t_cmd *content;
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t_list *current;
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int fds[2];
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current = *cmds;
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while (current != NULL)
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{
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content = current->content;
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if (current->next != NULL)
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{
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if (pipe(fds) == -1)
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{
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ft_eprintf("minishell: pipe failed\n");
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return (1);
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}
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content->fd_out = fds[1];
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((t_cmd *) current->next->content)->fd_in = fds[0];
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}
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content->executable = ft_get_executable_path(content->executable, env);
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if (content->executable != NULL)
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ft_excutor(content, env);
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close(content->fd_in);
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close(content->fd_out);
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current = current->next;
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}
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return (0);
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}
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