int main(int argc, char* argv[])
{
struct connection conn;
iopoll_fd fds[2];
int selfpipe;
int i;
msg_debug_init();
testmode = getenv("TESTMODE") != 0;
if ((shell_argv = malloc((argc + 3) * sizeof *argv)) == 0)
die_oom(111);
for (i = 1; i < argc; ++i)
shell_argv[i-1] = argv[i];
for (; i < argc + 4; ++i)
shell_argv[i-1] = 0;
shell_argc = argc - 1;
if ((path = getenv("PATH")) == 0)
die1(111, "No PATH is set");
if ((devnull = open("/dev/null", O_RDWR)) == -1)
die1sys(111, "Could not open \"/dev/null\"");
if (!nonblock_on(0))
die1sys(111, "Could not set non-blocking status");
if ((selfpipe = selfpipe_init()) == -1)
die1sys(111, "Could not create self-pipe");
init_slots();
connection_init(&conn, 0, 0);
fds[0].fd = 0;
fds[0].events = IOPOLL_READ;
fds[1].fd = selfpipe;
fds[1].events = IOPOLL_READ;
for (;;) {
if (iopoll_restart(fds, 2, -1) == -1)
die1sys(111, "Poll failed");
if (fds[0].revents)
if (connection_read(&conn, handle_packet) <= 0)
break;
if (fds[1].revents) {
read(selfpipe, &i, 1);
handle_child(WNOHANG);
}
}
msg1("Waiting for remaining slots to complete");
while (slots_used > 0)
handle_child(0);
return 0;
}
void handle_fork(pid_t pid, _Bool in_background, char *tokens[]) {
if (pid == 0) {
handle_child(tokens, in_background);
} else if (pid < 0) {
fprintf(stderr, "Please, make sure to specify a positive integer.\n");
} else {
handle_parent(pid, in_background, tokens);
}
}
int ACE_TMAIN (int argc, ACE_TCHAR *argv[])
{
if (argc == 1) // parent
ACE_ASSERT (handle_parent (argv[0]) == 0);
else
ACE_ASSERT (handle_child () == 0);
ACE_UNUSED_ARG (argv);
return 0;
}
void begin_session(session_t *sess)
{
/*开启接收带外数据*/
activate_oobinline(sess->ctrl_fd);
/*
int sockfds[2];
if (socketpair(AF_UNIX, SOCK_STREAM, 0, sockfds) < 0)
{
ERR_EXIT("socketpair");
}
*/
/*初始化内部进程间通讯通道*/
priv_sock_init(sess);
pid_t pid;
pid = fork();
if (pid < 0)
{
ERR_EXIT("fork");
}
if (pid == 0)
{
//ftp服务进程
/*
close(sockfds[0]);
sess->child_fd = sockfds[1];
*/
/*设置子进程环境*/
priv_sock_set_child_context(sess);
handle_child(sess);
}
else
{
//nobody进程
/*
close(sockfds[1]);
sess->parent_fd = sockfds[0];
*/
/*设置父进程环境*/
priv_sock_set_parent_context(sess);
handle_parent(sess);
}
}
void begin_session(session_t* psess)
{
priv_sock_init(psess);
pid_t pid = fork();
if (pid == -1)
ERR_EXIT("fork");
if (pid == 0)
{//服务进程
priv_sock_set_child_context(psess);
handle_child(psess);
}
else if(pid > 0)
{//nobody进程
priv_sock_set_parent_context(psess);
handle_parent(psess);
}
}
void begin_session(session_t *sess)
{
activate_oobinline(sess->ctrl_fd);
priv_sock_init(sess);
pid_t pid;
pid = fork();
if(pid < 0)
ERR_EXIT("fork");
if(pid == 0)
{
/* ftp process */
priv_sock_set_child_context(sess);
handle_child(sess);
}else
{
/* nobody process */
priv_sock_set_parent_context(sess);
handle_parent(sess);
}
}
void begin_session(session_t *sess)
{
/* struct passwd *pw = getpwnam("nobody");
if(pw == NULL)
return;
if(setegid(pw->pw_gid) < 0)
ERR_EXIT("setegid");
if(seteuid(pw->pw_uid) < 0)
ERR_EXIT("seteuid");*/
int sockfds[2];
if(socketpair(PF_UNIX, SOCK_STREAM, 0, sockfds) < 0)
ERR_EXIT("sockpair");
priv_sock_init(sess);
pid_t pid;
pid = fork();
if(pid < 0)
ERR_EXIT("fork");
if (pid == 0)
{
/* close(sockfds[0]);
sess->parent_fd = sockfds[1];*/
priv_sock_set_child_context(sess);
handle_child(sess);
}
else
{
/* close(sockfds[1]);
sess->child_fd = sockfds[0];*/
priv_sock_set_parent_context(sess);
handle_parent(sess);
}
}
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);
}
}
int handle_event(struct task *task)
{
int ret;
if (!task)
return 0;
debug(DEBUG_EVENT, "+++ process pid=%d event: %d", task->pid, task->event.type);
assert(task->stopped);
if (task->defer_func) {
ret = task->defer_func(task, task->defer_data);
if (ret == RET_DELETED)
return 1;
task->defer_func = NULL;
task->defer_data = NULL;
goto out2;
}
struct event *event = &task->event;
enum event_type type = event->type;
switch (type) {
case EVENT_NONE:
ret = continue_task(task, task->event.e_un.signum);
break;
case EVENT_SIGNAL:
ret = handle_signal(task);
break;
case EVENT_ABOUT_EXIT:
ret = handle_about_exit(task);
goto out1;
case EVENT_EXIT:
ret = handle_exit(task);
break;
case EVENT_EXIT_SIGNAL:
ret = handle_exit_signal(task);
break;
case EVENT_FORK:
case EVENT_VFORK:
case EVENT_CLONE:
ret = handle_child(task);
break;
case EVENT_EXEC:
ret = handle_exec(task);
break;
case EVENT_BREAKPOINT:
ret = handle_breakpoint(task);
goto out2;
case EVENT_NEW:
ret = handle_new(task);
break;
default:
fprintf(stderr, "fatal error, unknown event %d\n", type);
abort();
}
if (ret == RET_DELETED)
return 1;
if (ret != RET_DEFERED) {
assert(task->event.type == EVENT_NONE);
assert(task->stopped == 0);
}
out2:
assert(task->is_new == 0);
out1:
return (ret < 0) ? ret : 0;
}