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This commit is contained in:
Loic Deridder
2025-02-12 10:10:29 +01:00
parent ced584b17a
commit adc59eb33b
20 changed files with 822 additions and 662 deletions
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16
includes/exec/builtins.h
View File

@@ -23,21 +23,23 @@
# include <stdlib.h>
# include <string.h>
# define UNSET_ARG "not enough arguments"
# define EXPRT_INV "not a valid identifier"
// void echo(char *msg, int flag);
int builtin_echo(t_ast_n *node, char **envp);
int builtin_exit(char **arg, bool depth, t_ast_n *node);
int builtin_pwd(char **arg);
int builtin_env(char **arg, char **envp);
int builtin_unset(char **arg, t_ast_n *head);
int builtin_cd(char **arg, t_ast_n *head);
int builtin_export(char **arg, t_ast_n *head);
int builtin_unset(char **arg, t_ast_n *head);
int builtin_cd(char **arg, t_ast_n *head);
int builtin_export(char **arg, t_ast_n *head);
//UTILS
int count_char(char *str);
int count_args(char **tab);
int extractenv(char *str, char **envp);
int count_char(char *str);
int count_args(char **tab);
int extractenv(char *str, char **envp);
char *ft_getenv(char *str, char **envp);
int err_msg_cmd(char *cmd, char *arg, char *msg, int code);
int err_msg_cmd(char *cmd, char *arg, char *msg, int code);
void char_swap(char **s1, char **s2);
#endif

47
includes/exec/exec.h
View File

@@ -11,7 +11,7 @@
/* ************************************************************************** */
#ifndef EXEC_H
#define EXEC_H
# define EXEC_H
# include "../minishell.h"
# include <stdio.h>
@@ -19,7 +19,50 @@
# include <sys/types.h>
# include <stdlib.h>
# include <unistd.h>
# include <time.h>
int execute_command(t_ast_n *node);
int execute_command(t_ast_n *node);
//EXEC_REDIR
void handle_file(t_ast_n *node, int check, int i);
void handle_redir(t_ast_n *node);
void reset_redir(t_ast_n *node);
int err_fork_pline(int *pipes);
//EXEC_BUILTIN
int is_builtin(char *str);
int exec_builtin(t_ast_n *node);
//EXEC_PLINE
void exec_pcmd(t_ast_n *pcmd);
void exec_pchild(int *pipes, int index, t_ast_n *pcmd, int cmds);
int end_pline(pid_t last_pid, t_ast_n **pline);
int exec_pline(t_ast_n **pline);
//EXEC_SUBSH
int exec_shcmd(t_ast_n *node);
int execute_shcommand(t_ast_n *node);
int exec_subsh(t_ast_n *node);
//EXEC_HEREDOC
void expander_here(char **str, t_ast_n *node);
void here_remove_quote(t_ast_n *node, int j, char c);
int ifhere_remove_quote(t_ast_n *node, int j);
void read_input(t_ast_n *node, int j);
void here_doc(t_ast_n *node, int i);
//EXEC_UTILS
int execis_validchar(char c);
int execget_var_len(char *str, t_ast_n *node, int *j);
int get_dup_len(char *str, t_ast_n *node);
int execvalid_next(char c);
char *execextract_env(char *str, char **envp);
//EXEC_CMD
int count_cmds(t_ast_n **pline);
char *find_path(char *cmd, char **env);
void return_error(char *arg, char *msg, int code, t_ast_n *node);
int exec(t_ast_n *node);
int exec_scmd(t_ast_n *node);
#endif

8
includes/exec/expander.h
View File

@@ -31,4 +31,12 @@ int in_dquote(char *str, char *ch);
int is_exvalidchar(char c);
int exvalid_next(char c);
//EXPANDER_VAR_UTILS
int expand_exit(t_ast_n *node, int j, int k);
int get_new_len(t_ast_n *node, int j);
int valid_expand(t_ast_n *node, int j, int k);
char *create_new(t_ast_n *node, int j, int *len);
void handle_copy(t_ast_n *node, int j, char **new);
void cat_exit(t_ast_n *node, char **new, int i, int *k);
#endif

3
srcs/builtins/cd.c
View File

@@ -37,7 +37,8 @@ int builtin_cd(char **arg, t_ast_n *head)
{
char *path;
if (count_var(arg) == 1 || (count_var(arg) == 2 && ft_strncmp(arg[1], "~", 1) == 0))
if (count_var(arg) == 1 || (count_var(arg) == 2
&& ft_strncmp(arg[1], "~", 1) == 0))
{
path = get_var_value("HOME", head->msh->env);
if (!path)

33
srcs/builtins/echo.c
View File

@@ -46,27 +46,9 @@ char *ft_getenv(char *str, char **envp)
return (&envp[j][len]);
}
int extractenv(char *str, char **envp)
int print_exit(char **arg, t_ast_n *node)
{
int i;
char *var;
char *tmp;
i = 0;
while (str[i] && str[i] != ' ')
i++;
if (i >= 1)
tmp = ft_substr(str, 1, i - 1);
var = get_var_value(tmp, envp);
free(tmp);
if (var)
ft_printf("%s", var);
return (i);
}
int print_exit(char *arg, t_ast_n *node)
{
if (arg && ft_strncmp(arg, "$?", 2) == 0)
if (*arg && ft_strncmp(*arg, "$?", 2) == 0)
{
ft_fprintf(1, "%d", node->msh->ex_code);
return (1);
@@ -84,15 +66,8 @@ static void echo_print(t_ast_n *node, int j, char **envp)
i = 0;
while (node->args[j][i])
{
if (print_exit(node->args[j], node))
break ;
// if (node->args[j][i] == '$')
// {
// if (!node->args[j][i + 1] || node->args[j][i + 1] == ' ')
// ft_put_c(node->args[j][i++]);
// else
// i += extractenv(&node->args[j][i], envp);
// }
if (print_exit(&node->args[j], node))
i += 2;
else
ft_put_c(node->args[j][i++]);
}

16
srcs/builtins/export.c
View File

@@ -19,7 +19,7 @@ int is_export_valid(char *str)
if (!ft_isalpha(*str) && str[0] != '_')
return (0);
equal = ft_strchr(str, '=');
if(!equal)
if (!equal)
{
while (*(++str))
{
@@ -43,7 +43,7 @@ char **key_value(char *str)
{
char **tmp;
char *save;
char *equal;
char *equal;
tmp = malloc(sizeof(char *) * (2 + 1));
if (!tmp)
@@ -85,7 +85,6 @@ int print_export(char **envp)
{
int i;
int j;
char *tmp;
int len;
i = -1;
@@ -97,12 +96,9 @@ int print_export(char **envp)
j = 0;
while (j < len - i - 1)
{
if (ft_strncmp(envp[j], envp[j + 1], ft_strchr(envp[j], '=') - envp[j]) > 0)
{
tmp = envp[j];
envp[j] = envp[j + 1];
envp[j + 1] = tmp;
}
if (ft_strncmp(envp[j], envp[j + 1],
ft_strchr(envp[j], '=') - envp[j]) > 0)
char_swap(&envp[j], &(envp[j + 1]));
j++;
}
}
@@ -112,7 +108,7 @@ int print_export(char **envp)
int builtin_export(char **arg, t_ast_n *head)
{
int i;
int i;
char **tmp;
i = 0;

2
srcs/builtins/pwd.c
View File

@@ -24,7 +24,7 @@ int builtin_pwd(char **arg)
free(cwd);
return (0);
}
else
else
{
perror("pwd");
return (1);

25
srcs/builtins/unset.c
View File

@@ -12,27 +12,6 @@
#include "../../includes/minishell.h"
// void builtin_unset(char *str, char **envp)
// {
// int i;
// char *var;
//
// if (count_char(str) == 5)
// {
// ft_putendl_fd("unset: not enough arguments", 2);
// // exit(1);
// }
// i = 0;
// while(str[5 + i] && str[5 + i] == ' ')
// i++;
// var = &str[5 + i];
// i = 0;
// while (ft_strnstr(envp[i], var, ft_strlen(var)) == NULL)
// i++;
// if (envp[i])
// envp[i][0] = '\0';
// }
//
int builtin_unset(char **arg, t_ast_n *head)
{
int i;
@@ -40,8 +19,8 @@ int builtin_unset(char **arg, t_ast_n *head)
i = 0;
if (count_args(arg) == 1)
return (err_msg_cmd("unset", NULL, "not enough arguments", EXIT_FAILURE));
return (err_msg_cmd("unset", NULL, UNSET_ARG, EXIT_FAILURE));
while (++i < count_args(arg))
ret = remove_env_var(arg[i], head->msh);
ret = remove_env_var(arg[i], head->msh);
return (!ret);
}

9
srcs/builtins/utils.c
View File

@@ -32,3 +32,12 @@ int count_args(char **tab)
i++;
return (i);
}
void char_swap(char **s1, char **s2)
{
char *tmp;
tmp = *s1;
*s1 = *s2;
*s2 = tmp;
}

574
srcs/execution/exec.c
View File

@@ -10,579 +10,7 @@
/* */
/* ************************************************************************** */
#include "../../includes/minishell.h"
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
void handle_file(t_ast_n *node, int check, int i)
{
int fd;
if (check == 1)
fd = open(node->files[i], O_RDONLY);
else if (check == 2)
fd = open(node->files[i], O_WRONLY | O_CREAT | O_TRUNC, 0666);
else if (check == 3)
fd = open(node->files[i], O_WRONLY | O_CREAT | O_APPEND, 0666);
if (fd == -1)
{
perror("open");
exit(1);
}
if (check == 1)
node->_stdin = fd;
else if (check == 2 || check == 3)
node->_stdout = fd;
}
static int is_validchar(char c)
{
if (ft_isalnum(c) || c == '_')
return (1);
return (0);
}
static int get_var_len(char *str, t_ast_n *node, int *j)
{
int len;
int ret;
char *var;
len = *j + 1;
while (str[len] && is_validchar(str[len]))
len++;
var = ft_substr(str, *j + 1, (size_t)len - (*j + 1));
*j = len;
ret = ft_strlen(get_var_value(var, node->msh->env));
ft_free(&var);
return (ret - (len - (*j + 1)));
}
int get_dup_len(char *str, t_ast_n *node)
{
int i;
int len;
i = 0;
len = ft_strlen(str);
while (str[i])
{
if (str[i] == '$')
{
len += get_var_len(str, node, &i);
i--;
}
i++;
}
return (len);
}
static int valid_next(char c)
{
if (c != '\0' && is_validchar(c))
return (1);
return (0);
}
static char *extract_env(char *str, char **envp)
{
int i;
char *var;
char *tmp;
i = 1;
while (str[i] && is_validchar(str[i]))
i++;
if (i > 1)
tmp = ft_substr(str, 1, i - 1);
var = get_var_value(tmp, envp);
ft_free(&tmp);
return (var);
}
void expander_here(char **str, t_ast_n *node)
{
char *new;
int i;
int j;
int len;
i = -1;
len = get_dup_len(*str, node);
new = ft_calloc(len + 1, sizeof(char));
if (!new)
return ;
j = 0;
while ((*str)[j] && ++i < len)
{
if ((*str)[j] != '$')
new[i] = (*str)[j++];
else if ((*str)[j] == '$' && valid_next((*str)[j + 1]))
{
ft_strlcat(new, extract_env(&((*str)[j]), node->msh->env), -1);
i = ft_strlen(new) - 1;
while ((*str)[++j] && is_validchar((*str)[j]))
continue ;
}
}
ft_free(str);
*str = new;
}
void here_remove_quote(t_ast_n *node, int j, char c)
{
char *new;
int i;
int k;
int len;
i = 0;
k = 0;
len = ft_strlen(node->files[j]);
new = ft_calloc(len - 1, sizeof(char));
while (i < len - 2)
{
if ((&(node->files[j][k]) == ft_strchr(node->files[j], c)) ||
(&(node->files[j][k]) == ft_strrchr(node->files[j], c)))
{
k++;
}
else
new[i++] = node->files[j][k++];
}
ft_free(&node->files[j]);
node->files[j] = new;
}
int ifhere_remove_quote(t_ast_n *node, int j)
{
char c;
int ret;
ret = 0;
if (!ft_strchr(node->files[j], '\'') && !ft_strchr(node->files[j], '\"'))
c = 0;
else if (!ft_strchr(node->files[j], '\"'))
c = '\'';
else if (!ft_strchr(node->files[j], '\''))
c = '\"';
else if (ft_strchr(node->files[j], '\'') < ft_strchr(node->files[j], '\"'))
c = '\'';
else
c = '\"';
if (c && (ft_strchr(node->files[j], c) != ft_strrchr(node->files[j], c)))
here_remove_quote(node, j, c);
if (c)
ret = 1;
return (ret);
}
void read_input(t_ast_n *node, int j)
{
char *str;
int len;
int check;
check = ifhere_remove_quote(node, j);
len = ft_strlen(node->files[j]);
str = get_next_line(node->msh->here_fd, 0);
while (str && ft_strncmp(str, node->files[j], len) != 0)
{
if (!check)
expander_here(&str, node);
write(1, str, ft_strlen(str));
ft_free(&str);
str = get_next_line(node->msh->here_fd, 0);
}
if (!str)
get_next_line(node->msh->here_fd, 1);
ft_free(&str);
}
void here_doc(t_ast_n *node, int i)
{
pid_t pid;
pipe(node->fds);
pid = fork();
if (pid == 0)
{
dup2(node->fds[1], STDOUT_FILENO);
close(node->fds[0]);
close(node->fds[1]);
read_input(node, i);
free_child(node->msh);
exit(EXIT_SUCCESS);
}
else if (pid > 0)
{
close(node->fds[1]);
dup2(node->fds[0], STDIN_FILENO);
close(node->fds[0]);
waitpid(pid, NULL, 0);
}
else if (pid < 0)
exit (err_msg_cmd("fork", NULL, "failed to fork", 1));
}
void save_stds(t_ast_n *node)
{
node->save_stdo = dup(STDOUT_FILENO);
node->save_stdi = dup(STDIN_FILENO);
}
void handle_redir(t_ast_n *node)
{
int i;
i = -1;
if (node->state == _PLINE || node->redir[0] != _NR)
save_stds(node);
while (node->state != _PLINE && node->redir[++i] && node->redir[i] != _NR)
{
if (node->redir[i] == _RED_L)
handle_file(node, 1, i);
else if (node->redir[i] == _RED_R)
handle_file(node, 2, i);
else if (node->redir[i] == _RED_DR)
handle_file(node, 3, i);
else if (node->redir[i] == _RED_DL)
here_doc(node, i);
if (node->redir[i] == _RED_L)
{
dup2(node->_stdin, STDIN_FILENO);
close(node->_stdin);
}
else if (node->redir[i] == _RED_R || node->redir[i] == _RED_DR)
{
dup2(node->_stdout, STDOUT_FILENO);
close(node->_stdout);
}
}
}
int is_builtin(char *str)
{
if (ft_strncmp(str, "exit", -1) == 0)
return (1);
else if (ft_strncmp(str, "pwd", -1) == 0)
return (1);
else if (ft_strncmp(str, "echo", -1) == 0)
return (1);
else if (ft_strncmp(str, "env", -1) == 0)
return (1);
else if (ft_strncmp(str, "unset", -1) == 0)
return (1);
else if (ft_strncmp(str, "cd", -1) == 0)
return (1);
else if (ft_strncmp(str, "export", -1) == 0)
return (1);
else
return (0);
}
void reset_redir(t_ast_n *node)
{
if (node->state == _PLINE || node->redir[0] != _NR)
{
dup2(node->save_stdo, STDOUT_FILENO);
close(node->save_stdo);
dup2(node->save_stdi, STDIN_FILENO);
close(node->save_stdi);
}
}
int exec_builtin(t_ast_n *node)
{
int ret;
expand_node(node);
if (ft_strncmp(node->cmd, "exit", -1) == 0)
ret = builtin_exit(node->args, node->sh, node);
else if (ft_strncmp(node->cmd, "pwd", -1) == 0)
ret = builtin_pwd(node->args);
else if (ft_strncmp(node->cmd, "echo", -1) == 0)
ret = builtin_echo(node, node->msh->env);
else if (ft_strncmp(node->cmd, "env", -1) == 0)
ret = builtin_env(node->args, node->msh->env);
else if (ft_strncmp(node->cmd, "unset", -1) == 0)
ret = builtin_unset(node->args, node);
else if (ft_strncmp(node->cmd, "cd", -1) == 0)
ret = builtin_cd(node->args, node);
else
ret = builtin_export(node->args, node);
return (ret);
}
int count_cmds(t_ast_n **pline)
{
int i;
i = 0;
if (!pline || !*pline)
return (0);
while (pline[i])
i++;
return (i);
}
char *find_path(char *cmd, char **env)
{
char *tmp;
char *path;
char **paths;
int i;
if (access(cmd, F_OK) == 0 && access(cmd, X_OK) == 0)
return (cmd);
i = 0;
while (env[i] && ft_strnstr(env[i], "PATH=", 5) == NULL)
i++;
if (!env[i])
return (NULL);
paths = ft_split(env[i] + 5, ":");
i = -1;
while (paths[++i])
{
tmp = ft_strjoin(paths[i], "/");
path = ft_strjoin(tmp, cmd);
free(tmp);
if (access(path, F_OK) == 0)
return (free_tab(paths), path);
free(path);
}
free_tab(paths);
return (NULL);
}
void return_error(char *arg, char *msg, int code, t_ast_n *node)
{
ft_fprintf(2, "%s: %s\n", arg, msg);
free_child(node->msh);
exit(code);
}
int exec(t_ast_n *node)
{
char *path;
expand_node(node);
path = find_path(node->cmd, node->msh->env);
if (!path)
return_error(node->cmd, "command not found", 127, node);
if (access(path, X_OK) != 0)
return_error(path, "Permission denied", 126, node);
if (execve(path, node->args, node->msh->env) == -1)
{
free_child(node->msh);
perror("execve");
exit(1);
}
return (0);
}
int exec_scmd(t_ast_n *node)
{
pid_t pid;
int status;
if (is_builtin(node->cmd))
return (exec_builtin(node));
else
{
pid = fork();
if (pid == 0)
exec(node);
else if (pid > 0)
{
waitpid(pid, &status, 0);
if (WIFEXITED(status))
return (WEXITSTATUS(status));
else
return (1);
}
else
perror("fork");
return (1);
}
}
int err_fork_pline(int *pipes)
{
close(pipes[0]);
close(pipes[1]);
perror("fork");
return (1);
}
void exec_pcmd(t_ast_n *pcmd)
{
int ret;
if (!pcmd->cmd)
exit(0);
if (is_builtin(pcmd->cmd))
{
ret = exec_builtin(pcmd);
free_child(pcmd->msh);
exit(ret);
}
else
exec(pcmd);
}
int exec_subsh(t_ast_n *node);
int execute_shcommand(t_ast_n *node);
void exec_pchild(int *pipes, int index, t_ast_n *pcmd, int cmds)
{
int ret;
ret = 0;
if (index < cmds - 1)
dup2(pipes[1], STDOUT_FILENO);
close(pipes[0]);
close(pipes[1]);
handle_redir(pcmd);
if (pcmd->state == _CMD)
exec_pcmd(pcmd);
else if (pcmd->state == _SUBSH)
{
ret = execute_shcommand(pcmd->left);
free_child(pcmd->msh);
exit(ret);
}
}
int end_pline(pid_t last_pid, t_ast_n **pline)
{
int status;
int i;
i = -1;
waitpid(last_pid, &status, 0);
while (++i < count_cmds(pline) - 1)
wait(NULL);
reset_redir(pline[0]->parent);
if (WIFEXITED(status))
return (WEXITSTATUS(status));
else
return (1);
}
int exec_pline(t_ast_n **pline)
{
int i;
pid_t pid;
pid_t last_pid;
i = -1;
while (pline[++i])
{
if (i == 0)
handle_redir(pline[0]->parent);
pipe(pline[i]->fds);
pid = fork();
if (pid == 0)
exec_pchild(pline[i]->fds, i, pline[i], count_cmds(pline));
else if (pid > 0)
{
dup2(pline[i]->fds[0], STDIN_FILENO);
close(pline[i]->fds[0]);
close(pline[i]->fds[1]);
if (i == count_cmds(pline) - 1)
last_pid = pid;
}
else if (pid < 0)
return (err_fork_pline(pline[i]->fds));
}
return (end_pline(last_pid, pline));
}
int exec_shcmd(t_ast_n *node)
{
pid_t pid;
int status;
if (is_builtin(node->cmd))
return (exec_builtin(node));
else
{
pid = fork();
if (pid == 0)
exec(node);
else if (pid > 0)
{
waitpid(pid, &status, 0);
if (WIFEXITED(status))
return (WEXITSTATUS(status));
else
return (1);
}
else
perror("fork");
return (1);
}
}
int exec_subsh(t_ast_n *node);
int execute_shcommand(t_ast_n *node)
{
if (node->state == _CMD)
handle_redir(node);
if (node->state == _CMD)
node->msh->ex_code = exec_shcmd(node);
else if (node->state == _AND)
{
node->msh->ex_code = execute_shcommand(node->left);
if (node->msh->ex_code == 0)
node->msh->ex_code = execute_shcommand(node->right);
}
else if (node->state == _OR)
{
node->msh->ex_code = execute_shcommand(node->left);
if (node->msh->ex_code != 0)
node->msh->ex_code = execute_shcommand(node->right);
}
else if (node->state == _PLINE)
node->msh->ex_code = exec_pline(node->pline);
else if (node->state == _SUBSH)
node->msh->ex_code = exec_subsh(node->left);
if (node->state == _CMD)
reset_redir(node);
return (node->msh->ex_code);
}
int exec_subsh(t_ast_n *node)
{
int status;
pid_t pid;
int ret;
pid = fork();
if (pid == 0)
{
handle_redir(node->parent);
ret = execute_shcommand(node);
free_child(node->msh);
exit(ret);
}
else if (pid > 0)
{
waitpid(pid, &status, 0);
if (WIFEXITED(status) && node->parent->state != _PLINE)
return (WEXITSTATUS(status));
else
return (1);
}
else
{
perror("fork");
return (1);
}
}
#include "../../includes/exec/exec.h"
int execute_command(t_ast_n *node)
{

55
srcs/execution/exec_builtin.c Normal file
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@@ -0,0 +1,55 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* exec_builtin.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lderidde <lderidde@student.s19.be> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/02/12 09:48:21 by lderidde #+# #+# */
/* Updated: 2025/02/12 09:48:21 by lderidde ### ########.fr */
/* */
/* ************************************************************************** */
#include "../../includes/exec/exec.h"
int is_builtin(char *str)
{
if (ft_strncmp(str, "exit", -1) == 0)
return (1);
else if (ft_strncmp(str, "pwd", -1) == 0)
return (1);
else if (ft_strncmp(str, "echo", -1) == 0)
return (1);
else if (ft_strncmp(str, "env", -1) == 0)
return (1);
else if (ft_strncmp(str, "unset", -1) == 0)
return (1);
else if (ft_strncmp(str, "cd", -1) == 0)
return (1);
else if (ft_strncmp(str, "export", -1) == 0)
return (1);
else
return (0);
}
int exec_builtin(t_ast_n *node)
{
int ret;
expand_node(node);
if (ft_strncmp(node->cmd, "exit", -1) == 0)
ret = builtin_exit(node->args, node->sh, node);
else if (ft_strncmp(node->cmd, "pwd", -1) == 0)
ret = builtin_pwd(node->args);
else if (ft_strncmp(node->cmd, "echo", -1) == 0)
ret = builtin_echo(node, node->msh->env);
else if (ft_strncmp(node->cmd, "env", -1) == 0)
ret = builtin_env(node->args, node->msh->env);
else if (ft_strncmp(node->cmd, "unset", -1) == 0)
ret = builtin_unset(node->args, node);
else if (ft_strncmp(node->cmd, "cd", -1) == 0)
ret = builtin_cd(node->args, node);
else
ret = builtin_export(node->args, node);
return (ret);
}

106
srcs/execution/exec_cmd.c Normal file
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@@ -0,0 +1,106 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* exec_cmd.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lderidde <lderidde@student.s19.be> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/02/12 10:00:08 by lderidde #+# #+# */
/* Updated: 2025/02/12 10:00:08 by lderidde ### ########.fr */
/* */
/* ************************************************************************** */
#include "../../includes/exec/exec.h"
int count_cmds(t_ast_n **pline)
{
int i;
i = 0;
if (!pline || !*pline)
return (0);
while (pline[i])
i++;
return (i);
}
char *find_path(char *cmd, char **env)
{
char *tmp;
char *path;
char **paths;
int i;
if (access(cmd, F_OK) == 0 && access(cmd, X_OK) == 0)
return (cmd);
i = 0;
while (env[i] && ft_strnstr(env[i], "PATH=", 5) == NULL)
i++;
if (!env[i])
return (NULL);
paths = ft_split(env[i] + 5, ":");
i = -1;
while (paths[++i])
{
tmp = ft_strjoin(paths[i], "/");
path = ft_strjoin(tmp, cmd);
free(tmp);
if (access(path, F_OK) == 0)
return (free_tab(paths), path);
free(path);
}
free_tab(paths);
return (NULL);
}
void return_error(char *arg, char *msg, int code, t_ast_n *node)
{
ft_fprintf(2, "%s: %s\n", arg, msg);
free_child(node->msh);
exit(code);
}
int exec(t_ast_n *node)
{
char *path;
expand_node(node);
path = find_path(node->cmd, node->msh->env);
if (!path)
return_error(node->cmd, "command not found", 127, node);
if (access(path, X_OK) != 0)
return_error(path, "Permission denied", 126, node);
if (execve(path, node->args, node->msh->env) == -1)
{
free_child(node->msh);
perror("execve");
exit(1);
}
return (0);
}
int exec_scmd(t_ast_n *node)
{
pid_t pid;
int status;
if (is_builtin(node->cmd))
return (exec_builtin(node));
else
{
pid = fork();
if (pid == 0)
exec(node);
else if (pid > 0)
{
waitpid(pid, &status, 0);
if (WIFEXITED(status))
return (WEXITSTATUS(status));
else
return (1);
}
else
perror("fork");
return (1);
}
}

138
srcs/execution/exec_heredoc.c Normal file
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@@ -0,0 +1,138 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* exec_heredoc.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lderidde <lderidde@student.s19.be> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/02/12 09:53:26 by lderidde #+# #+# */
/* Updated: 2025/02/12 09:53:26 by lderidde ### ########.fr */
/* */
/* ************************************************************************** */
#include "../../includes/exec/exec.h"
void expander_here(char **str, t_ast_n *node)
{
char *new;
int i;
int j;
int len;
i = -1;
len = get_dup_len(*str, node);
new = ft_calloc(len + 1, sizeof(char));
if (!new)
return ;
j = 0;
while ((*str)[j] && ++i < len)
{
if ((*str)[j] != '$')
new[i] = (*str)[j++];
else if ((*str)[j] == '$' && execvalid_next((*str)[j + 1]))
{
ft_strlcat(new, execextract_env(&((*str)[j]), node->msh->env), -1);
i = ft_strlen(new) - 1;
while ((*str)[++j] && execis_validchar((*str)[j]))
continue ;
}
}
ft_free(str);
*str = new;
}
void here_remove_quote(t_ast_n *node, int j, char c)
{
char *new;
int i;
int k;
int len;
i = 0;
k = 0;
len = ft_strlen(node->files[j]);
new = ft_calloc(len - 1, sizeof(char));
while (i < len - 2)
{
if ((&(node->files[j][k]) == ft_strchr(node->files[j], c)) ||
(&(node->files[j][k]) == ft_strrchr(node->files[j], c)))
{
k++;
}
else
new[i++] = node->files[j][k++];
}
ft_free(&node->files[j]);
node->files[j] = new;
}
int ifhere_remove_quote(t_ast_n *node, int j)
{
char c;
int ret;
ret = 0;
if (!ft_strchr(node->files[j], '\'') && !ft_strchr(node->files[j], '\"'))
c = 0;
else if (!ft_strchr(node->files[j], '\"'))
c = '\'';
else if (!ft_strchr(node->files[j], '\''))
c = '\"';
else if (ft_strchr(node->files[j], '\'') < ft_strchr(node->files[j], '\"'))
c = '\'';
else
c = '\"';
if (c && (ft_strchr(node->files[j], c) != ft_strrchr(node->files[j], c)))
here_remove_quote(node, j, c);
if (c)
ret = 1;
return (ret);
}
void read_input(t_ast_n *node, int j)
{
char *str;
int len;
int check;
check = ifhere_remove_quote(node, j);
len = ft_strlen(node->files[j]);
str = get_next_line(node->msh->here_fd, 0);
while (str && ft_strncmp(str, node->files[j], len) != 0)
{
if (!check)
expander_here(&str, node);
write(1, str, ft_strlen(str));
ft_free(&str);
str = get_next_line(node->msh->here_fd, 0);
}
if (!str)
get_next_line(node->msh->here_fd, 1);
ft_free(&str);
}
void here_doc(t_ast_n *node, int i)
{
pid_t pid;
pipe(node->fds);
pid = fork();
if (pid == 0)
{
dup2(node->fds[1], STDOUT_FILENO);
close(node->fds[0]);
close(node->fds[1]);
read_input(node, i);
free_child(node->msh);
exit(EXIT_SUCCESS);
}
else if (pid > 0)
{
close(node->fds[1]);
dup2(node->fds[0], STDIN_FILENO);
close(node->fds[0]);
waitpid(pid, NULL, 0);
}
else if (pid < 0)
exit (err_msg_cmd("fork", NULL, "failed to fork", 1));
}

94
srcs/execution/exec_pline.c Normal file
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@@ -0,0 +1,94 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* exec_pline.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lderidde <lderidde@student.s19.be> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/02/12 09:50:12 by lderidde #+# #+# */
/* Updated: 2025/02/12 09:50:12 by lderidde ### ########.fr */
/* */
/* ************************************************************************** */
#include "../../includes/exec/exec.h"
void exec_pcmd(t_ast_n *pcmd)
{
int ret;
if (!pcmd->cmd)
exit(0);
if (is_builtin(pcmd->cmd))
{
ret = exec_builtin(pcmd);
free_child(pcmd->msh);
exit(ret);
}
else
exec(pcmd);
}
void exec_pchild(int *pipes, int index, t_ast_n *pcmd, int cmds)
{
int ret;
ret = 0;
if (index < cmds - 1)
dup2(pipes[1], STDOUT_FILENO);
close(pipes[0]);
close(pipes[1]);
handle_redir(pcmd);
if (pcmd->state == _CMD)
exec_pcmd(pcmd);
else if (pcmd->state == _SUBSH)
{
ret = execute_shcommand(pcmd->left);
free_child(pcmd->msh);
exit(ret);
}
}
int end_pline(pid_t last_pid, t_ast_n **pline)
{
int status;
int i;
i = -1;
waitpid(last_pid, &status, 0);
while (++i < count_cmds(pline) - 1)
wait(NULL);
reset_redir(pline[0]->parent);
if (WIFEXITED(status))
return (WEXITSTATUS(status));
else
return (1);
}
int exec_pline(t_ast_n **pline)
{
int i;
pid_t pid;
pid_t last_pid;
i = -1;
while (pline[++i])
{
if (i == 0)
handle_redir(pline[0]->parent);
pipe(pline[i]->fds);
pid = fork();
if (pid == 0)
exec_pchild(pline[i]->fds, i, pline[i], count_cmds(pline));
else if (pid > 0)
{
dup2(pline[i]->fds[0], STDIN_FILENO);
close(pline[i]->fds[0]);
close(pline[i]->fds[1]);
if (i == count_cmds(pline) - 1)
last_pid = pid;
}
else if (pid < 0)
return (err_fork_pline(pline[i]->fds));
}
return (end_pline(last_pid, pline));
}

91
srcs/execution/exec_redir.c Normal file
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@@ -0,0 +1,91 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* exec_redir.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lderidde <lderidde@student.s19.be> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/02/12 09:42:31 by lderidde #+# #+# */
/* Updated: 2025/02/12 09:42:31 by lderidde ### ########.fr */
/* */
/* ************************************************************************** */
#include "../../includes/exec/exec.h"
void handle_file(t_ast_n *node, int check, int i)
{
int fd;
if (check == 1)
fd = open(node->files[i], O_RDONLY);
else if (check == 2)
fd = open(node->files[i], O_WRONLY | O_CREAT | O_TRUNC, 0666);
else if (check == 3)
fd = open(node->files[i], O_WRONLY | O_CREAT | O_APPEND, 0666);
if (fd == -1)
{
perror("open");
exit(1);
}
if (check == 1)
node->_stdin = fd;
else if (check == 2 || check == 3)
node->_stdout = fd;
}
static void save_stds(t_ast_n *node)
{
if (node->state == _PLINE || node->redir[0] != _NR)
{
node->save_stdo = dup(STDOUT_FILENO);
node->save_stdi = dup(STDIN_FILENO);
}
}
void handle_redir(t_ast_n *node)
{
int i;
i = -1;
save_stds(node);
while (node->state != _PLINE && node->redir[++i] && node->redir[i] != _NR)
{
if (node->redir[i] == _RED_L)
handle_file(node, 1, i);
else if (node->redir[i] == _RED_R)
handle_file(node, 2, i);
else if (node->redir[i] == _RED_DR)
handle_file(node, 3, i);
else if (node->redir[i] == _RED_DL)
here_doc(node, i);
if (node->redir[i] == _RED_L)
{
dup2(node->_stdin, STDIN_FILENO);
close(node->_stdin);
}
else if (node->redir[i] == _RED_R || node->redir[i] == _RED_DR)
{
dup2(node->_stdout, STDOUT_FILENO);
close(node->_stdout);
}
}
}
void reset_redir(t_ast_n *node)
{
if (node->state == _PLINE || node->redir[0] != _NR)
{
dup2(node->save_stdo, STDOUT_FILENO);
close(node->save_stdo);
dup2(node->save_stdi, STDIN_FILENO);
close(node->save_stdi);
}
}
int err_fork_pline(int *pipes)
{
close(pipes[0]);
close(pipes[1]);
perror("fork");
return (1);
}

95
srcs/execution/exec_subsh.c Normal file
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@@ -0,0 +1,95 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* exec_subsh.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lderidde <lderidde@student.s19.be> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/02/12 09:52:04 by lderidde #+# #+# */
/* Updated: 2025/02/12 09:52:04 by lderidde ### ########.fr */
/* */
/* ************************************************************************** */
#include "../../includes/exec/exec.h"
int exec_shcmd(t_ast_n *node)
{
pid_t pid;
int status;
if (is_builtin(node->cmd))
return (exec_builtin(node));
else
{
pid = fork();
if (pid == 0)
exec(node);
else if (pid > 0)
{
waitpid(pid, &status, 0);
if (WIFEXITED(status))
return (WEXITSTATUS(status));
else
return (1);
}
else
perror("fork");
return (1);
}
}
int execute_shcommand(t_ast_n *node)
{
if (node->state == _CMD)
handle_redir(node);
if (node->state == _CMD)
node->msh->ex_code = exec_shcmd(node);
else if (node->state == _AND)
{
node->msh->ex_code = execute_shcommand(node->left);
if (node->msh->ex_code == 0)
node->msh->ex_code = execute_shcommand(node->right);
}
else if (node->state == _OR)
{
node->msh->ex_code = execute_shcommand(node->left);
if (node->msh->ex_code != 0)
node->msh->ex_code = execute_shcommand(node->right);
}
else if (node->state == _PLINE)
node->msh->ex_code = exec_pline(node->pline);
else if (node->state == _SUBSH)
node->msh->ex_code = exec_subsh(node->left);
if (node->state == _CMD)
reset_redir(node);
return (node->msh->ex_code);
}
int exec_subsh(t_ast_n *node)
{
int status;
pid_t pid;
int ret;
pid = fork();
if (pid == 0)
{
handle_redir(node->parent);
ret = execute_shcommand(node);
free_child(node->msh);
exit(ret);
}
else if (pid > 0)
{
waitpid(pid, &status, 0);
if (WIFEXITED(status) && node->parent->state != _PLINE)
return (WEXITSTATUS(status));
else
return (1);
}
else
{
perror("fork");
return (1);
}
}

78
srcs/execution/exec_utils.c Normal file
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@@ -0,0 +1,78 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* exec_utils.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lderidde <lderidde@student.s19.be> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/02/12 09:57:39 by lderidde #+# #+# */
/* Updated: 2025/02/12 09:57:39 by lderidde ### ########.fr */
/* */
/* ************************************************************************** */
#include "../../includes/exec/exec.h"
int execis_validchar(char c)
{
if (ft_isalnum(c) || c == '_')
return (1);
return (0);
}
int execget_var_len(char *str, t_ast_n *node, int *j)
{
int len;
int ret;
char *var;
len = *j + 1;
while (str[len] && execis_validchar(str[len]))
len++;
var = ft_substr(str, *j + 1, (size_t)len - (*j + 1));
*j = len;
ret = ft_strlen(get_var_value(var, node->msh->env));
ft_free(&var);
return (ret - (len - (*j + 1)));
}
int get_dup_len(char *str, t_ast_n *node)
{
int i;
int len;
i = 0;
len = ft_strlen(str);
while (str[i])
{
if (str[i] == '$')
{
len += execget_var_len(str, node, &i);
i--;
}
i++;
}
return (len);
}
int execvalid_next(char c)
{
if (c != '\0' && execis_validchar(c))
return (1);
return (0);
}
char *execextract_env(char *str, char **envp)
{
int i;
char *var;
char *tmp;
i = 1;
while (str[i] && execis_validchar(str[i]))
i++;
if (i > 1)
tmp = ft_substr(str, 1, i - 1);
var = get_var_value(tmp, envp);
ft_free(&tmp);
return (var);
}

4
srcs/expander/expand_tilde.c
View File

@@ -12,7 +12,7 @@
#include "../../includes/minishell.h"
static int get_new_len(t_ast_n *node, int j)
static int get_nw_len(t_ast_n *node, int j)
{
int i;
int len;
@@ -56,7 +56,7 @@ void expander_tilde(t_ast_n *node, int j)
char *new;
i = -1;
len = get_new_len(node, j);
len = get_nw_len(node, j);
new = ft_calloc(len + 1, sizeof(char));
if (!new)
return ;

35
srcs/expander/expand_var.c
View File

@@ -6,7 +6,7 @@
/* By: lderidde <lderidde@student.s19.be> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/02/07 12:58:25 by lderidde #+# #+# */
/* Updated: 2025/02/11 15:31:05 by lderidde ### ########.fr */
/* Updated: 2025/02/12 09:06:11 by lderidde ### ########.fr */
/* */
/* ************************************************************************** */
@@ -44,7 +44,7 @@ static char *extract_env(char *str, char **envp)
return (var);
}
static int get_new_len(t_ast_n *node, int j)
int get_new_len(t_ast_n *node, int j)
{
int i;
int len;
@@ -53,7 +53,14 @@ static int get_new_len(t_ast_n *node, int j)
len = ft_strlen(node->args[j]);
while (node->args[j][i])
{
if (node->args[j][i] == '$')
if (node->args[j][i] == '$' && (node->args[j][i + 1]
&& node->args[j][i + 1] == '?')
&& !in_squote(node->args[j], &node->args[j][i]))
{
len -= 1;
}
else if (node->args[j][i] == '$' &&
!in_squote(node->args[j], &node->args[j][i]))
{
len += get_var_len(node, j, &i);
i--;
@@ -63,7 +70,7 @@ static int get_new_len(t_ast_n *node, int j)
return (len);
}
void expander_var(t_ast_n *node, int j)
void expander_var(t_ast_n *nd, int j)
{
int i;
int k;
@@ -71,25 +78,25 @@ void expander_var(t_ast_n *node, int j)
char *new;
i = -1;
len = get_new_len(node, j);
new = ft_calloc(len + 1, sizeof(char));
new = create_new(nd, j, &len);
if (!new)
return ;
k = 0;
while (node->args[j][k] && ++i < len)
while (nd->args[j][k] && ++i < len)
{
if (node->args[j][k] != '$')
new[i] = node->args[j][k++];
else if (node->args[j][k] == '$' && exvalid_next(node->args[j][k + 1]))
if (nd->args[j][k] != '$' || in_squote(nd->args[j], &nd->args[j][k]))
new[i] = nd->args[j][k++];
else if (expand_exit(nd, j, k))
cat_exit(nd, &new, i, &k);
else if (valid_expand(nd, j, k))
{
ft_strlcat(new, extract_env(&node->args[j][k], node->msh->env), -1);
ft_strlcat(new, extract_env(&nd->args[j][k], nd->msh->env), -1);
i = ft_strlen(new) - 1;
while (node->args[j][++k] && is_exvalidchar(node->args[j][k]))
while (nd->args[j][++k] && is_exvalidchar(nd->args[j][k]))
continue ;
}
}
ft_free(&node->args[j]);
node->args[j] = new;
handle_copy(nd, j, &new);
}
int expand_var(t_ast_n *node, int j)

55
srcs/expander/expander_var_utils.c Normal file
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@@ -0,0 +1,55 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* expander_var_utils.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lderidde <lderidde@student.s19.be> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/02/12 09:17:28 by lderidde #+# #+# */
/* Updated: 2025/02/12 09:17:28 by lderidde ### ########.fr */
/* */
/* ************************************************************************** */
#include "../../includes/exec/expander.h"
int expand_exit(t_ast_n *node, int j, int k)
{
if (node->args[j][k] == '$' && (node->args[j][k + 1]
&& node->args[j][k + 1] == '?')
&& !in_squote(node->args[j], &node->args[j][k]))
{
return (1);
}
return (0);
}
int valid_expand(t_ast_n *node, int j, int k)
{
if (node->args[j][k] == '$' && exvalid_next(node->args[j][k + 1])
&& !in_squote(node->args[j], &node->args[j][k]))
{
return (1);
}
return (0);
}
char *create_new(t_ast_n *node, int j, int *len)
{
char *new;
*len = get_new_len(node, j);
new = ft_calloc(*len + 1, sizeof(char));
return (new);
}
void handle_copy(t_ast_n *node, int j, char **new)
{
ft_free(&node->args[j]);
node->args[j] = *new;
}
void cat_exit(t_ast_n *node, char **new, int i, int *k)
{
(*new)[i] = node->msh->ex_code + '0';
*k += 2;
}