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Mini Shell
/*
+----------------------------------------------------------------------+
| Swoole |
+----------------------------------------------------------------------+
| This source file is subject to version 2.0 of the Apache license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.apache.org/licenses/LICENSE-2.0.html |
| If you did not receive a copy of the Apache2.0 license and are unable|
| to obtain it through the world-wide-web, please send a note to |
| license@swoole.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Tianfeng Han <mikan.tenny@gmail.com> |
+----------------------------------------------------------------------+
*/
#pragma once
#include "coroutine.h"
#include "connection.h"
#include "socks5.h"
#include <vector>
#include <string>
#define SW_DEFAULT_SOCKET_CONNECT_TIMEOUT 1
#define SW_DEFAULT_SOCKET_READ_TIMEOUT -1
#define SW_DEFAULT_SOCKET_WRITE_TIMEOUT -1
namespace swoole
{
enum swTimeout_type
{
SW_TIMEOUT_CONNECT = 1u << 1,
SW_TIMEOUT_READ = 1u << 2,
SW_TIMEOUT_WRITE = 1u << 3,
SW_TIMEOUT_RDWR = SW_TIMEOUT_READ | SW_TIMEOUT_WRITE,
SW_TIMEOUT_ALL = 0xff,
};
static constexpr enum swTimeout_type swTimeout_type_list[3] =
{
SW_TIMEOUT_CONNECT, SW_TIMEOUT_READ, SW_TIMEOUT_WRITE
};
}
namespace swoole { namespace coroutine {
//-------------------------------------------------------------------------------
class Socket
{
public:
static double default_connect_timeout;
static double default_read_timeout;
static double default_write_timeout;
swSocket *socket = nullptr;
int errCode = 0;
const char *errMsg = "";
bool open_length_check = false;
bool open_eof_check = false;
bool http2 = false;
swProtocol protocol = {0};
struct _swSocks5 *socks5_proxy = nullptr;
struct _http_proxy* http_proxy = nullptr;
#ifdef SW_USE_OPENSSL
bool open_ssl = false;
swSSL_option ssl_option = {0};
#endif
Socket(int domain, int type, int protocol);
Socket(int _fd, int _domain, int _type, int _protocol);
Socket(enum swSocket_type type = SW_SOCK_TCP);
Socket(int _fd, enum swSocket_type _type);
~Socket();
bool connect(std::string host, int port, int flags = 0);
bool connect(const struct sockaddr *addr, socklen_t addrlen);
bool shutdown(int how = SHUT_RDWR);
bool cancel(const enum swEvent_type event);
bool close();
inline bool is_connect()
{
return activated && !closed;
}
bool check_liveness();
ssize_t peek(void *__buf, size_t __n);
ssize_t recv(void *__buf, size_t __n);
ssize_t send(const void *__buf, size_t __n);
ssize_t read(void *__buf, size_t __n);
ssize_t write(const void *__buf, size_t __n);
ssize_t recvmsg(struct msghdr *msg, int flags);
ssize_t sendmsg(const struct msghdr *msg, int flags);
ssize_t recv_all(void *__buf, size_t __n);
ssize_t send_all(const void *__buf, size_t __n);
ssize_t recv_packet(double timeout = 0);
bool poll(enum swEvent_type type);
Socket* accept(double timeout = 0);
bool bind(std::string address, int port = 0);
bool listen(int backlog = 0);
bool sendfile(const char *filename, off_t offset, size_t length);
ssize_t sendto(const char *address, int port, const void *__buf, size_t __n);
ssize_t recvfrom(void *__buf, size_t __n);
ssize_t recvfrom(void *__buf, size_t __n, struct sockaddr *_addr, socklen_t *_socklen);
#ifdef SW_USE_OPENSSL
bool ssl_handshake();
int ssl_verify(bool allow_self_signed);
bool ssl_accept();
bool ssl_check_context();
#endif
static inline enum swSocket_type convert_to_type(int domain, int type, int protocol = 0)
{
switch (domain)
{
case AF_INET:
return type == SOCK_STREAM ? SW_SOCK_TCP : SW_SOCK_UDP;
case AF_INET6:
return type == SOCK_STREAM ? SW_SOCK_TCP6 : SW_SOCK_UDP6;
case AF_UNIX:
return type == SOCK_STREAM ? SW_SOCK_UNIX_STREAM : SW_SOCK_UNIX_DGRAM;
default:
return SW_SOCK_TCP;
}
}
static inline enum swSocket_type convert_to_type(std::string &host)
{
if (host.compare(0, 6, "unix:/", 0, 6) == 0)
{
host = host.substr(sizeof("unix:") - 1);
host.erase(0, host.find_first_not_of('/') - 1);
return SW_SOCK_UNIX_STREAM;
}
else if (host.find(':') != std::string::npos)
{
return SW_SOCK_TCP6;
}
else
{
return SW_SOCK_TCP;
}
}
static inline void init_reactor(swReactor *reactor)
{
swReactor_set_handler(reactor, SW_FD_CORO_SOCKET | SW_EVENT_READ, readable_event_callback);
swReactor_set_handler(reactor, SW_FD_CORO_SOCKET | SW_EVENT_WRITE, writable_event_callback);
swReactor_set_handler(reactor, SW_FD_CORO_SOCKET | SW_EVENT_ERROR, error_event_callback);
}
inline enum swSocket_type get_type()
{
return type;
}
inline int get_sock_domain()
{
return sock_domain;
}
inline int get_sock_type()
{
return sock_type;
}
inline int get_sock_protocol()
{
return sock_protocol;
}
inline int get_fd()
{
return sock_fd;
}
inline int get_bind_port()
{
return bind_port;
}
bool getsockname();
bool getpeername();
const char* get_ip();
int get_port();
inline bool has_bound(const enum swEvent_type event = SW_EVENT_RDWR)
{
return get_bound_co(event) != nullptr;
}
inline Coroutine* get_bound_co(const enum swEvent_type event)
{
if (event & SW_EVENT_READ)
{
if (read_co)
{
return read_co;
}
}
if (event & SW_EVENT_WRITE)
{
if (write_co)
{
return write_co;
}
}
return nullptr;
}
inline long get_bound_cid(const enum swEvent_type event = SW_EVENT_RDWR)
{
Coroutine *co = get_bound_co(event);
return co ? co->get_cid() : 0;
}
inline void check_bound_co(const enum swEvent_type event)
{
long cid = get_bound_cid(event);
if (sw_unlikely(cid))
{
swFatalError(
SW_ERROR_CO_HAS_BEEN_BOUND,
"Socket#%d has already been bound to another coroutine#%ld, "
"%s of the same socket in coroutine#%ld at the same time is not allowed",
sock_fd, cid,
(event == SW_EVENT_READ ? "reading" : (event == SW_EVENT_WRITE ? "writing" :
(read_co && write_co ? "reading or writing" : (read_co ? "reading" : "writing")))),
Coroutine::get_current_cid()
);
}
}
inline void set_err(int e)
{
errCode = errno = e;
errMsg = e ? swoole_strerror(e) : "";
}
inline void set_err(int e, const char *s)
{
errCode = errno = e;
errMsg = s;
}
/* set connect read write timeout */
inline void set_timeout(double timeout, int type = SW_TIMEOUT_ALL)
{
if (timeout == 0)
{
return;
}
if (type & SW_TIMEOUT_CONNECT)
{
connect_timeout = timeout;
}
if (type & SW_TIMEOUT_READ)
{
read_timeout = timeout;
}
if (type & SW_TIMEOUT_WRITE)
{
write_timeout = timeout;
}
}
inline void set_timeout(struct timeval *timeout, int type = SW_TIMEOUT_ALL)
{
set_timeout((double) timeout->tv_sec + ((double) timeout->tv_usec / 1000 / 1000), type);
}
inline double get_timeout(enum swTimeout_type type = SW_TIMEOUT_ALL)
{
SW_ASSERT_1BYTE(type);
if (type == SW_TIMEOUT_CONNECT)
{
return connect_timeout;
}
else if (type == SW_TIMEOUT_READ)
{
return read_timeout;
}
else // if (type == SW_TIMEOUT_WRITE)
{
return write_timeout;
}
}
inline bool set_option(int level, int optname, int optval)
{
if (setsockopt(sock_fd, level, optname, &optval, sizeof(optval)) != 0)
{
swSysWarn("setsockopt(%d, %d, %d, %d) failed", sock_fd, level, optname, optval);
return false;
}
return true;
}
inline swString* get_read_buffer()
{
if (sw_unlikely(!read_buffer))
{
read_buffer = swString_new(SW_BUFFER_SIZE_BIG);
}
return read_buffer;
}
inline swString* get_write_buffer()
{
if (sw_unlikely(!write_buffer))
{
write_buffer = swString_new(SW_BUFFER_SIZE_BIG);
}
return write_buffer;
}
#ifdef SW_USE_OPENSSL
inline bool is_ssl_enable()
{
return socket && socket->ssl != NULL;
}
bool ssl_shutdown();
#endif
private:
enum swSocket_type type;
int sock_domain = 0;
int sock_type = 0;
int sock_protocol = 0;
int sock_fd = -1;
Coroutine *read_co = nullptr;
Coroutine *write_co = nullptr;
#ifdef SW_USE_OPENSSL
enum swEvent_type want_event = SW_EVENT_NULL;
#endif
std::string connect_host;
int connect_port = 0;
std::string bind_address;
int bind_port = 0;
int backlog = 0;
double connect_timeout = default_connect_timeout;
double read_timeout = default_read_timeout;
double write_timeout = default_write_timeout;
swTimer_node *read_timer = nullptr;
swTimer_node *write_timer = nullptr;
swString *read_buffer = nullptr;
swString *write_buffer = nullptr;
swSocketAddress bind_address_info = {{}, 0};
#ifdef SW_USE_OPENSSL
std::string ssl_host_name;
SSL_CTX *ssl_context = nullptr;
#endif
bool activated = true;
bool shutdown_read = false;
bool shutdown_write = false;
bool closed = false;
static void timer_callback(swTimer *timer, swTimer_node *tnode);
static int readable_event_callback(swReactor *reactor, swEvent *event);
static int writable_event_callback(swReactor *reactor, swEvent *event);
static int error_event_callback(swReactor *reactor, swEvent *event);
Socket(int _fd, swSocketAddress *addr, Socket *socket);
inline void init_sock_type(enum swSocket_type _type);
inline bool init_sock();
void init_reactor_socket(int fd);
inline void init_options()
{
if (type == SW_SOCK_TCP || type == SW_SOCK_TCP6)
{
set_option(IPPROTO_TCP, TCP_NODELAY, 1);
}
protocol.package_length_type = 'N';
protocol.package_length_size = 4;
protocol.package_body_offset = 0;
protocol.package_max_length = SW_BUFFER_INPUT_SIZE;
}
bool add_event(const enum swEvent_type event);
bool wait_event(const enum swEvent_type event, const void **__buf = nullptr, size_t __n = 0);
inline bool is_available(const enum swEvent_type event)
{
if (event != SW_EVENT_NULL)
{
check_bound_co(event);
}
if (sw_unlikely(closed))
{
set_err(ECONNRESET);
return false;
}
return true;
}
// TODO: move to client.cc
bool socks5_handshake();
bool http_proxy_handshake();
class timer_controller
{
public:
timer_controller(swTimer_node **timer_pp, double timeout, Socket *sock, swTimerCallback callback) :
timer_pp(timer_pp), timeout(timeout), socket_(sock), callback(callback)
{
}
bool start()
{
if (timeout != 0 && !*timer_pp)
{
enabled = true;
if (timeout > 0)
{
*timer_pp = swoole_timer_add((long) (timeout * 1000), SW_FALSE, callback, socket_);
return *timer_pp != nullptr;
}
else // if (timeout < 0)
{
*timer_pp = (swTimer_node *) -1;
}
}
return true;
}
~timer_controller()
{
if (enabled && *timer_pp)
{
if (*timer_pp != (swTimer_node *) -1)
{
swoole_timer_del(*timer_pp);
}
*timer_pp = nullptr;
}
}
private:
bool enabled = false;
swTimer_node** timer_pp;
double timeout;
Socket *socket_;
swTimerCallback callback;
};
public:
class timeout_setter
{
public:
timeout_setter(Socket *socket, double timeout, const enum swTimeout_type type) :
socket_(socket), timeout(timeout), type(type)
{
if (timeout == 0)
{
return;
}
for (uint8_t i = 0; i < SW_ARRAY_SIZE(swTimeout_type_list); i++)
{
if (type & swTimeout_type_list[i])
{
original_timeout[i] = socket->get_timeout(swTimeout_type_list[i]);
if (timeout != original_timeout[i])
{
socket->set_timeout(timeout, swTimeout_type_list[i]);
}
}
}
}
~timeout_setter()
{
if (timeout == 0)
{
return;
}
for (uint8_t i = 0; i < SW_ARRAY_SIZE(swTimeout_type_list); i++)
{
if (type & swTimeout_type_list[i])
{
if (timeout != original_timeout[i])
{
socket_->set_timeout(original_timeout[i], swTimeout_type_list[i]);
}
}
}
}
protected:
Socket *socket_;
double timeout;
enum swTimeout_type type;
double original_timeout[sizeof(swTimeout_type_list)] = {0};
};
class timeout_controller: public timeout_setter
{
public:
timeout_controller(Socket *socket, double timeout, const enum swTimeout_type type) :
timeout_setter(socket, timeout, type)
{
}
inline bool has_timedout(const enum swTimeout_type type)
{
SW_ASSERT_1BYTE(type);
if (timeout > 0)
{
if (sw_unlikely(startup_time == 0))
{
startup_time = swoole_microtime();
}
else
{
double used_time = swoole_microtime() - startup_time;
if (sw_unlikely(timeout - used_time < SW_TIMER_MIN_SEC))
{
socket_->set_err(ETIMEDOUT);
return true;
}
socket_->set_timeout(timeout - used_time, type);
}
}
return false;
}
protected:
double startup_time = 0;
};
};
std::vector<std::string> dns_lookup(const char *domain, double timeout = 2.0);
//-------------------------------------------------------------------------------
}}
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