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This commit is contained in:
Alexandre POMMIER 2022-01-21 01:17:32 +01:00
parent 08314da7dc
commit ccffe2b3c8
1 changed files with 60 additions and 37 deletions
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91
main.c
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@ -6,11 +6,12 @@
/* By: apommier <apommier@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/01/19 12:45:03 by apommier #+# #+# */
/* Updated: 2022/01/20 20:26:59 by apommier ### ########.fr */
/* Updated: 2022/01/21 01:16:22 by apommier ### ########.fr */
/* */
/* ************************************************************************** */
#include "pipex.h"
#include <stdio.h>
char **get_path(char **envp)
{
@ -25,9 +26,9 @@ char **get_path(char **envp)
swap = 0;
while (envp[i++] && envp[i])
{
if (!ft_strncmp(envp[i], "PATH", 4))
if (!ft_strncmp(envp[i], "PATH=", 5))
{
swap = ft_substr(envp[i], -1, 4);
swap = ft_substr(envp[i], 5, ft_strlen(envp[i]));
line = ft_split(swap, ':');
free(swap);
return (line);
@ -41,84 +42,106 @@ char *get_command(char *exec, char **envp)
{
char **path;
char *cmd;
char *del;
char *swap;
int i;
i = 0;
cmd = exec;
swap = 0;
cmd = ft_strjoin("/", exec);
path = get_path(envp);
while (access(cmd, F_OK) && path[i++])
swap = ft_strjoin(path[i], cmd);
while (access(swap, F_OK) == -1 && path[i++])
{
del = cmd;
cmd = ft_strjoin("/", cmd);
free(del);
del = cmd;
cmd = ft_strjoin(path[i], cmd);
free(del);
if (swap)
free(swap);
swap = ft_strjoin(path[i], cmd);
}
return (cmd);
printf("cmd = %s path = %s\n", cmd, swap);
free(cmd);
return (swap);
}
void pipex(char *cmd1, char *cmd2, int fd1, int fd2, char **envp)
void pipex(int fd1, int fd2, char **envp, char **argv)
{
int *pipe;
int pipe_tab[2];
pid_t parent;
pipe = ft_calloc(sizeof(int), 2);
if (pipe(pipe) == -1)
return ;
parent = fork();
if (parent < 0)
{
free(pipe);
printf("here\n");
perror("Error");
return ;
}
if (!parent)
child(cmd1, fd1, path);
child_process(fd1, envp, argv, pipe_tab);
else
parent(cmd2, fd2, path);
else
free(pipe);
parent_process(fd2, envp, argv, pipe_tab);
printf("pipex end\n");
}
void child(int fd1, char **envp, char **argv)
void child_process(int fd1, char **envp, char **argv, int *pipe_tab)
{
int i;
char *cmd1;
cmd1 = 0;
i = 0;
if (!dup2(fd1, STDIN_FILENO))
if (dup2(fd1, 0) == -1)
{
perror("Error");
return ;
if (!dup2(pipe[1], STDIN_FILENO))
}
if (dup2(pipe_tab[1], 1) == -1)
{
perror("Error");
return ;
close(end[0]);
}
close(pipe_tab[0]);
close(fd1);
cmd1 = get_command(argc[0], envp);
cmd1 = get_command(argv[2], envp);
if (cmd1)
execve(cmd1, argv, envp)
{
execve(cmd1, argv, envp);
free(cmd1);
}
}
void parent(int fd2, char **envp, char **argv)
void parent_process(int fd2, char **envp, char **argv, int *pipe_tab)
{
int i;
int status;
char *cmd2;
waitpid(-1, &status, 0);
cmd2 = 0;
i = 0;
if (!dup2(fd2, 1))
return ;
if (!dup2(pipe_tab[0], 0))
return ;
close(pipe_tab[1]);
close(fd2);
cmd2 = get_command(argv[3], envp);
if (cmd2)
{
execve(cmd2, argv, envp);
free(cmd2);
}
}
int main(int argc, char **argv, char **envp)
{
int fd1;
int fd2;
char *path;
if (check_error)
return (0);
//if (check_error)
// return (0);
fd1 = open(argv[1], O_RDONLY);
fd2 = open(argv[4], O_RDWR | O_CREAT | O_TRUNC, 0644);
if (!fd1 || !fd2)
return (0);
pipex(argv[1], argv[4], fd1, fd2);
pipex(fd1, fd2 , envp, argv);
printf("--end--\n");
return (1);
}