76 lines
1.4 KiB
C
76 lines
1.4 KiB
C
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#include "minishell.h"
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void **cmd_path(char **argv, char **envp)
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{
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int i;
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char **path;
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char *cmd;
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i = 0;
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while (envp[i] && ft_strncmp(envp[i], "PATH=", 5))
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i++;
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path = ft_split(envp[i] + 5, ':'); // 5 = lentgh of "PATH="
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i = -1;
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while (*path && i != 0)
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{
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cmd = ft_strjoin(path[0], "/");
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cmd = ft_strjoin(cmd, argv[0]);
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i = access(cmd, X_OK);
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path++;
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}
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argv[0] = cmd;
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return (NULL);
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}
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int handle_fd(char **input, int i, int fdin, int *fd_in, int *fd_out)
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{
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int *pipes_fd;
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int next_in;
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char *tmp;
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*fd_in = fdin;
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*fd_out = 1;
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next_in = 0;
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if (input[i + 1])
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{
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pipes_fd = calloc(2, sizeof(int));
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pipe(pipes_fd);
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*fd_out = pipes_fd[1];
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next_in = pipes_fd[0];
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}
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tmp = ft_strchr(input[i], '>');
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if (tmp)
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{
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tmp[0] = '\0';
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tmp = ft_strtrim(tmp + 2, " "); // +2 for "> "
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*fd_out = open(tmp, O_WRONLY | O_TRUNC);
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next_in = *fd_out;
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}
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return (next_in);
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}
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t_list *parser(char *input, char **envp)
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{
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t_list *cmd;
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t_cmd *element;
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char **input_split;
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int i;
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int tmp_fd;
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input_split = ft_split(input, '|');
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tmp_fd = 0;
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i = 0;
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cmd = NULL;
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while (input_split[i])
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{
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element = calloc(1, sizeof(t_cmd));
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tmp_fd = handle_fd(input_split, i, tmp_fd, &(element->fd_in), &(element->fd_out));
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element->argv = ft_split(input_split[i], ' ');
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element->builtin = cmd_path(element->argv, envp);
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ft_lstadd_back(&cmd, ft_lstnew(element));
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i++;
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}
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return (cmd);
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}
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