char *get_exec_path(t_env env, char *cmd)
{
char path[6000];
char *bin;
char *colon;
if (!cmd)
shell_perror("get_exec_path recieved NULL command string");
if (!*cmd)
return (shell_pwarning("not a valid command: ", "(Empty)"));
if (isdir(cmd))
return (shell_pwarning("is a directory: ", cmd));
if (!access(cmd, X_OK))
return (ft_strdup(cmd));
if (!(bin = fetch_key_val(env, "PATH")))
return (NULL);
while ((colon = ft_strchr(bin, ':')))
{
ft_strncpy(path, bin, (colon - bin) + 1);
ft_strncpy(ft_strchr(path, ':'), "/", 2);
ft_strcat(path, cmd);
if (!access(path, X_OK))
return (ft_strdup(path));
bin = colon + 1;
}
return (parse_exec_string(path, bin, cmd));
}
int main(int argc, char **argv)
{
int sock;
if (argc != 2)
shell_perror("USAGE: ./serveur [port]");
sock = create_server(ft_atoi(argv[1]));
server(sock);
close(sock);
return (0);
}
int create_server(int port)
{
int sock;
struct protoent *proto;
struct sockaddr_in sin;
if (proto = getprotobyname("tcp"), (proto) == 0)
shell_perror("getprotobyname(\"tcp\") returned 0");
if (sock = socket(PF_INET, SOCK_STREAM, proto->p_proto), sock < 0)
shell_perror("socket creation failed");
sin.sin_family = AF_INET;
sin.sin_port = htons(port);
sin.sin_addr.s_addr = htonl(INADDR_ANY);
if (bind(sock, (struct sockaddr *)&sin, sizeof(sin)) < 0)
{
shell_perror("socket bind failed");
}
if (listen(sock, 1) < 0)
shell_perror("socket listen failed");
printf("Server started at address %d port %d\n", INADDR_ANY, port);
return (sock);
}
void handle_signals(int signum)
{
static int sock = -1;
if (sock == -1)
{
sock = signum;
return ;
}
if (sock == 0)
shell_perror("Server encountered an issue. Need a tissue?");
server_sendbuf(sock, "quit");
write(1, "\n", 1);
shell_pwarning("", "Server connection ended");
ft_putstr(GOODBYE);
exit(0);
}
void server(int sock)
{
int pid;
int cs;
struct sockaddr_in csin;
unsigned int cslen;
while (1)
{
cs = accept(sock, (struct sockaddr *)&csin, &cslen);
printf("Client connected:\n\tfamily: %i\n\tport: %u\n\taddr: %s\n",
csin.sin_family, csin.sin_port, inet_ntoa(csin.sin_addr));
if (pid = fork(), pid == 0)
{
close(sock);
while (chdir(SERVER_DIR) == -1)
mkdir(SERVER_DIR, 0777) ? shell_perror("mkdir failed") : 1;
server_root_dir();
handle_child(cs, csin.sin_port);
}
close(cs);
}
}
/* execute_external
*
* takes a subcmd and executes the command by forking and then exec'ing
*/
void execute_external(char *cmd, char **args) {
get_and_check_command(&cmd);
execv(cmd, args);
shell_perror(cmd, errno);
exit(1);
}
