int call_redir(t_list *list, int i, char **env)
{
t_point point;
int a;
a = 0;
if (i > 0 && (list[i - 1].operand[0] == '<' ||
list[i - 1].operand[0] == '>')
&& (list[i].operand[0] == ';' ||
list[i].operand[0] == '&' ||
(list[i].operand[0] == '|' && list[i].operand[1] == '|')))
{
point.point = 1;
point.env = env;
a = check_redir(list[i].option, list[i + 1].option,
list[i].operand, &point);
}
else
{
point.point = 0;
point.env = env;
a = check_redir(list[i].option, list[i + 1].option,
list[i].operand, &point);
}
return (a);
}
char *check_line_cmd(char *str)
{
int i;
i = 0;
while (str[i] == ' ' && str[i])
++i;
if (!str[i])
return (NULL);
i = 0;
if (check_line(str) == 2 || check_redir(str) == 1)
{
ft_putendl("msh: Parse error");
return (NULL);
}
while (check_line(str) == 1 || str[ft_strlen(str) - 1] == '\\')
{
ft_putstr("parse> ");
str = ft_strjoin(str, take_cmd(1));
}
if (check_line(str) == 2 || check_redir(str) == 1)
{
ft_putendl("msh: Parse error");
return (NULL);
}
return (str);
}
t_lex *parser(t_lex *lex)
{
t_lex *cursor;
t_detail *det_error;
t_lex *sep_error;
cursor = lex;
det_error = NULL;
sep_error = NULL;
while (cursor && !det_error)
{
if (!is_sep(cursor->str))
{
if ((cursor->lst = str_to_lst(cursor->str)) == NULL)
return (free_all(lex));
det_error = check_cmd_syntax(cursor->lst);
if (!det_error && !(det_error = check_redir(cursor->lst)))
assign_redir(cursor->lst, NULL, &det_error);
}
else
cursor->lst = NULL;
cursor = cursor->next;
}
if (det_error)
return (free_all(lex));
sep_error = check_sep_syntax(lex);
return (sep_error ? free_all(lex) : lex);
}
void execute(char *cmd)
{
/* Arguments:
*cmd --- the program to run
Purpose:
this function takes a string and forks off
a new process with the global args array
this will first check to see if aliases exist for
the command. check_alias will deal with
changing arg[0] if an alias exists, so always
call execvp with arg[0] (instead of cmd arg) in
case check_alias changes the cmd
it will then check to see if the cmd is a built in
command. if it is, then this doesnt fork any process
*/
int i;
check_alias(cmd);
i = check_builtin(args[0]);
if(!i) { return;} //cmd was a built in (like "cd")
if(fork() == 0) {
//now in child process
check_redir(); //check for redirections
i = execvp(args[0], args); //using execvp to avoid PATH crap
if(i < 0) {
printf("-fash: %s: command not found\n", cmd); //error, we'll just say not found
exit(1);
}
}
else { handleSig = 1; wait(NULL); }
handleSig = 0;
}
int call_multi_redir(t_list *list, int i, char **env)
{
t_point point;
point.point = 0;
point.env = env;
check_redir(list[i].option, list[i + 2].option, list[i].operand, &point);
return (0);
}
void pipe_execute(char *cmd, int readWrite)
{
/* Arguments:
*cmd --- the program to run
*fds --- array of two file descriptors for pipe
readWrite --- 0 = read, 1 = write, 2 = both
Purpose:
this function takes a string and forks off
a new process with the global args array
this will first check to see if aliases exist for
the command. check_alias will deal with
changing arg[0] if an alias exists, so always
call execvp with arg[0] (instead of cmd arg) in
case check_alias changes the cmd
it will then check to see if the cmd is a built in
command. if it is, then this doesnt fork any process
*/
int i;
check_alias(cmd);
i = check_builtin(args[0]);
if(!i) { return;} //cmd was a built in (like "cd")
if(fork() == 0) {
//in child
check_redir();
int newfd, readfd, writefd;
if(readWrite == 2){ //this is a middle command, no closing, dup both stdin and stdout
readfd = open("pipe", O_RDONLY);
writefd = open("pipe_middle", O_WRONLY | O_CREAT, S_IRWXU | S_IRGRP | S_IROTH);
close(0);
dup(readfd);
close(1);
dup(writefd);
}else if (readWrite == 1){ //first command, purely writing
newfd = open("pipe", O_WRONLY | O_CREAT, S_IRWXU | S_IRGRP | S_IROTH);
dup2(newfd,1);
close(newfd);
}else{ //last command, purely reading
newfd = open("pipe", O_RDONLY);
close(0);
dup(newfd);
close(newfd);
}
i = execvp(args[0], args);
if(i < 0) {
printf("-fash: %s: command not found\n", cmd); //error, we'll just say not found
exit(1);
}
if(readWrite == 0){ close(0);close(newfd);}
else if(readWrite ==1){close(1);close(newfd);}
else{ close(0);close(1);close(readfd);close(writefd);system("mv pipe_middle pipe");}
} else {wait(NULL);} //wait for everyone
}
int cmd_translator(char *cmd, t_data *data)
{
t_his *stor;
data->conf = NULL;
if (!(stor = cmd_to_list(cmd)))
return (SH_FAIL);
if (!check_redir(stor))
return (SH_FAIL);
if (!(list_to_conf(data, stor)))
return (SH_FAIL);
if (!check_cmd(data->conf))
return (SH_FAIL);
return (SH_OK);
}
void my_cmd(t_list *list, char *s, char **env, int i)
{
char *epur_s;
char **tab;
epur_s = epur_str(s);
tab = my_str_to_wordtab(epur_s, &i);
if ((my_builtin(list, s, tab, env)) == 0 && \
check_redir(epur_s, tab, env, i) == 0)
my_fork(tab[0], tab, env);
if (check_env(tab, env) == 1)
env = env_cpy(list);
check_recurs(list, s, env, i - 1);
my_mini_free(epur_s, tab);
}
int gere_redir(char **path, char **cmd)
{
int red;
red = check_redir(cmd);
if (red == 1)
return (redir_droite(path, cmd));
if (red == 2)
return (redir_droite_double(path, cmd));
if (red == 3)
return (redir_gauche(path, cmd));
if (red == 4)
return (redir_gauche_double(path, cmd));
return (0);
}
static int simple(void)
{
struct redir_args args[] = {
{301, DEST, PATH},
{302, DEST, PATH},
{303, DEST, PATH},
{307, DEST, PATH},
{0, NULL, NULL}
};
int n;
for (n = 0; args[n].code; n++)
CALL(check_redir(&args[n], DEST));
return OK;
}
int execute_redir(t_redir *redir, t_fd *fd)
{
if (check_redir(redir) == 1)
return (1);
if (redir->left != NULL)
if (left_redir(fd, redir) == 1)
return (1);
if (redir->right != NULL)
if (right_redir(fd, redir) == 1)
return (1);
if (redir->d_right != NULL)
if (dright_redir(fd, redir) == 1)
return (1);
if (redir->d_left != NULL)
if (dleft_redir(fd, redir) == 1)
return (1);
return (0);
}
static char *sort_chain(char *str, int *cur)
{
int tmp;
char *str2;
tmp = *cur;
*cur = move_curs(str, *cur);
if (str[*cur] == '|' || str[*cur] == ';')
return (check_around(tmp, *cur, str, str[*cur]));
else if (str[*cur] == '>' && (str2 = check_redir(str, cur, tmp)))
return (str2);
else if (str[*cur] == '<' && (str2 = check_left_redir(str, tmp, cur)))
return (str2);
else if (str[*cur] == '&' && (str2 = check_and(tmp, cur, str)))
return (str2);
else if (!str[*cur])
return (cut_chain(tmp, *cur, str));
else
return (NULL);
}
static int relative_2(void)
{
struct redir_args args = {302, "wishbone", "/foo/bar/"};
return check_redir(&args, "http://localhost:7777/foo/bar/wishbone");
}
static int relative_1(void)
{
struct redir_args args = {302, "norman", "/foo/bar"};
return check_redir(&args, "http://localhost:7777/foo/norman");
}
/* check that a non-absoluteURI is qualified properly */
static int non_absolute(void)
{
struct redir_args args = {302, "/foo/bar/blah", PATH};
return check_redir(&args, "http://localhost:7777/foo/bar/blah");
}