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Mini Shell
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 <rango@swoole.com> |
| Twosee <twose@qq.com> |
+----------------------------------------------------------------------+
*/
#pragma once
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/uio.h>
#include <netinet/in.h>
#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
#include <sys/types.h>
#endif
#include <netinet/ip6.h>
#include <netinet/tcp.h>
#include <netinet/udp.h>
#include <arpa/inet.h>
#include <string>
#include <vector>
#include "swoole.h"
#include "swoole_ssl.h"
#include "swoole_buffer.h"
#include "swoole_file.h"
#ifndef SOCK_NONBLOCK
#define SOCK_NONBLOCK O_NONBLOCK
#endif
#ifdef __sun
#define s6_addr8 _S6_un._S6_u8
#define s6_addr16 _S6_un._S6_u16
#define s6_addr32 _S6_un._S6_u32
#endif
static bool IN_IS_ADDR_LOOPBACK(struct in_addr *a) {
return a->s_addr == htonl(INADDR_LOOPBACK);
}
// OS Feature
#if defined(HAVE_KQUEUE) || !defined(HAVE_SENDFILE)
int swoole_sendfile(int out_fd, int in_fd, off_t *offset, size_t size);
#else
#include <sys/sendfile.h>
#define swoole_sendfile(out_fd, in_fd, offset, limit) sendfile(out_fd, in_fd, offset, limit)
#endif
enum {
SW_BAD_SOCKET = -1,
};
namespace swoole {
namespace network {
struct GetaddrinfoRequest {
const char *hostname;
const char *service;
int family;
int socktype;
int protocol;
int error;
void *result;
int count;
void parse_result(std::vector<std::string> &retval);
};
struct SendfileTask {
off_t offset;
size_t length;
char filename[0];
};
struct SendfileRequest {
File file;
size_t length;
off_t offset;
public:
SendfileRequest(const char *filename, off_t _offset, size_t _length) : file(filename, O_RDONLY) {
offset = _offset;
length = _length;
}
};
struct Address {
union {
struct sockaddr ss;
struct sockaddr_in inet_v4;
struct sockaddr_in6 inet_v6;
struct sockaddr_un un;
} addr;
socklen_t len;
SocketType type;
bool assign(SocketType _type, const std::string &_host, int _port);
const char *get_ip() {
return get_addr();
}
int get_port();
const char *get_addr();
bool is_loopback_addr() {
if (type == SW_SOCK_TCP || type == SW_SOCK_UDP) {
return IN_IS_ADDR_LOOPBACK(&addr.inet_v4.sin_addr);
} else if (type == SW_SOCK_TCP6 || type == SW_SOCK_UDP6) {
return IN6_IS_ADDR_LOOPBACK(&addr.inet_v6.sin6_addr);
}
return false;
}
static bool verify_ip(int __af, const std::string &str) {
char tmp_address[INET6_ADDRSTRLEN];
return inet_pton(__af, str.c_str(), tmp_address) != -1;
}
};
struct IOVector {
// we should modify iov_iterator instead of iov, iov is readonly
struct iovec *iov = nullptr;
struct iovec *iov_iterator = nullptr;
int count = 0;
int remain_count = 0;
int index = 0;
size_t offset_bytes = 0;
IOVector(struct iovec *_iov, int _iovcnt);
~IOVector();
void update_iterator(ssize_t __n);
struct iovec *get_iterator() {
return iov_iterator;
}
size_t length() {
size_t len = 0;
SW_LOOP_N(count) {
len += iov[i].iov_len;
}
return len;
}
int get_remain_count() {
return remain_count;
}
int get_index() {
return index;
}
size_t get_offset_bytes() {
return offset_bytes;
}
};
struct Socket {
static double default_dns_timeout;
static double default_connect_timeout;
static double default_read_timeout;
static double default_write_timeout;
static uint32_t default_buffer_size;
int fd;
FdType fd_type;
SocketType socket_type;
int events;
bool enable_tcp_nodelay;
uchar removed : 1;
uchar silent_remove : 1;
uchar nonblock : 1;
uchar cloexec : 1;
uchar direct_send : 1;
#ifdef SW_USE_OPENSSL
uchar ssl_send_ : 1;
uchar ssl_want_read : 1;
uchar ssl_want_write : 1;
uchar ssl_renegotiation : 1;
uchar ssl_handshake_buffer_set : 1;
uchar ssl_quiet_shutdown : 1;
uchar ssl_closed_ : 1;
#ifdef SW_SUPPORT_DTLS
uchar dtls : 1;
#endif
#endif
uchar dontwait : 1;
uchar close_wait : 1;
uchar send_wait : 1;
uchar tcp_nopush : 1;
uchar tcp_nodelay : 1;
uchar skip_recv : 1;
uchar recv_wait : 1;
uchar event_hup : 1;
uchar dont_restart : 1;
// memory buffer size [user space]
uint32_t buffer_size;
uint32_t chunk_size;
void *object;
#ifdef SW_USE_OPENSSL
SSL *ssl;
uint32_t ssl_state;
#endif
Address info;
double recv_timeout_ = default_read_timeout;
double send_timeout_ = default_write_timeout;
double last_received_time;
double last_sent_time;
Buffer *out_buffer;
Buffer *in_buffer;
String *recv_buffer;
TimerNode *recv_timer;
TimerNode *send_timer;
size_t total_recv_bytes;
size_t total_send_bytes;
// for reactor
int handle_send();
int handle_sendfile();
// user space memory buffer
void set_memory_buffer_size(uint32_t _buffer_size) {
buffer_size = _buffer_size;
}
// socket option [kernel buffer]
bool set_buffer_size(uint32_t _buffer_size);
bool set_recv_buffer_size(uint32_t _buffer_size);
bool set_send_buffer_size(uint32_t _buffer_size);
bool set_timeout(double timeout);
bool set_recv_timeout(double timeout);
bool set_send_timeout(double timeout);
bool set_nonblock() {
return set_fd_option(1, -1);
}
bool set_block() {
return set_fd_option(0, -1);
}
bool set_fd_option(int _nonblock, int _cloexec);
int set_option(int level, int optname, int optval) {
return setsockopt(fd, level, optname, &optval, sizeof(optval));
}
int set_option(int level, int optname, const void *optval, socklen_t optlen) {
return setsockopt(fd, level, optname, optval, optlen);
}
int get_option(int level, int optname, void *optval, socklen_t *optlen) {
return getsockopt(fd, level, optname, optval, optlen);
}
int get_option(int level, int optname, int *optval) {
socklen_t optlen = sizeof(*optval);
return get_option(level, optname, optval, &optlen);
}
int get_fd() {
return fd;
}
int get_name(Address *sa) {
sa->len = sizeof(sa->addr);
return getsockname(fd, &sa->addr.ss, &sa->len);
}
int set_tcp_nopush(int nopush) {
#ifdef TCP_CORK
if (set_option(IPPROTO_TCP, TCP_CORK, nopush) == SW_ERR) {
return -1;
} else {
tcp_nopush = nopush;
return 0;
}
#else
return -1;
#endif
}
int set_reuse_addr(int enable = 1) {
return set_option(SOL_SOCKET, SO_REUSEADDR, enable);
}
int set_reuse_port(int enable = 1) {
#ifdef SO_REUSEPORT
return set_option(SOL_SOCKET, SO_REUSEPORT, enable);
#endif
return -1;
}
int set_tcp_nodelay(int nodelay = 1) {
if (set_option(IPPROTO_TCP, TCP_NODELAY, nodelay) == SW_ERR) {
return -1;
} else {
tcp_nodelay = nodelay;
return 0;
}
}
bool check_liveness() {
char buf;
errno = 0;
ssize_t retval = peek(&buf, sizeof(buf), MSG_DONTWAIT);
return !(retval == 0 || (retval < 0 && catch_read_error(errno) == SW_CLOSE));
}
/**
* socket io operation
*/
int sendfile(const char *filename, off_t offset, size_t length);
ssize_t recv(void *__buf, size_t __n, int __flags);
ssize_t send(const void *__buf, size_t __n, int __flags);
ssize_t peek(void *__buf, size_t __n, int __flags);
Socket *accept();
int bind(const std::string &_host, int *port);
ssize_t readv(IOVector *io_vector);
ssize_t writev(IOVector *io_vector);
ssize_t writev(const struct iovec *iov, size_t iovcnt) {
return ::writev(fd, iov, iovcnt);
}
int bind(const Address &sa) {
return ::bind(fd, &sa.addr.ss, sizeof(sa.addr.ss));
}
int listen(int backlog = 0) {
return ::listen(fd, backlog <= 0 ? SW_BACKLOG : backlog);
}
void clean();
ssize_t send_blocking(const void *__data, size_t __len);
ssize_t send_async(const void *__data, size_t __len);
ssize_t recv_blocking(void *__data, size_t __len, int flags);
int sendfile_blocking(const char *filename, off_t offset, size_t length, double timeout);
ssize_t writev_blocking(const struct iovec *iov, size_t iovcnt);
int connect(const Address &sa) {
return ::connect(fd, &sa.addr.ss, sa.len);
}
int connect(const Address *sa) {
return ::connect(fd, &sa->addr.ss, sa->len);
}
int connect(const std::string &host, int port) {
Address addr;
addr.assign(socket_type, host, port);
return connect(addr);
}
#ifdef SW_USE_OPENSSL
void ssl_clear_error() {
ERR_clear_error();
ssl_want_read = 0;
ssl_want_write = 0;
}
int ssl_create(SSLContext *_ssl_context, int _flags);
int ssl_connect();
ReturnCode ssl_accept();
ssize_t ssl_recv(void *__buf, size_t __n);
ssize_t ssl_send(const void *__buf, size_t __n);
ssize_t ssl_readv(IOVector *io_vector);
ssize_t ssl_writev(IOVector *io_vector);
int ssl_sendfile(const File &fp, off_t *offset, size_t size);
STACK_OF(X509) * ssl_get_peer_cert_chain();
std::vector<std::string> ssl_get_peer_cert_chain(int limit);
X509 *ssl_get_peer_certificate();
int ssl_get_peer_certificate(char *buf, size_t n);
bool ssl_get_peer_certificate(String *buf);
bool ssl_verify(bool allow_self_signed);
bool ssl_check_host(const char *tls_host_name);
void ssl_catch_error();
bool ssl_shutdown();
void ssl_close();
const char *ssl_get_error_reason(int *reason);
#endif
ssize_t recvfrom(char *__buf, size_t __len, int flags, Address *sa) {
sa->len = sizeof(sa->addr);
return ::recvfrom(fd, __buf, __len, flags, &sa->addr.ss, &sa->len);
}
bool cork() {
if (tcp_nopush) {
return false;
}
#ifdef TCP_CORK
if (set_tcp_nopush(1) < 0) {
swoole_sys_warning("set_tcp_nopush(fd=%d, ON) failed", fd);
return false;
}
#endif
// Need to turn off tcp nodelay when using nopush
if (tcp_nodelay && set_tcp_nodelay(0) != 0) {
swoole_sys_warning("set_tcp_nodelay(fd=%d, OFF) failed", fd);
}
return true;
}
bool uncork() {
if (!tcp_nopush) {
return false;
}
#ifdef TCP_CORK
if (set_tcp_nopush(0) < 0) {
swoole_sys_warning("set_tcp_nopush(fd=%d, OFF) failed", fd);
return false;
}
#endif
// Restore tcp_nodelay setting
if (enable_tcp_nodelay && tcp_nodelay == 0 && set_tcp_nodelay(1) != 0) {
swoole_sys_warning("set_tcp_nodelay(fd=%d, ON) failed", fd);
return false;
}
return true;
}
bool isset_readable_event() {
return events & SW_EVENT_READ;
}
bool isset_writable_event() {
return events & SW_EVENT_WRITE;
}
int wait_event(int timeout_ms, int events);
void free();
static inline int is_dgram(SocketType type) {
return (type == SW_SOCK_UDP || type == SW_SOCK_UDP6 || type == SW_SOCK_UNIX_DGRAM);
}
static inline int is_stream(SocketType type) {
return (type == SW_SOCK_TCP || type == SW_SOCK_TCP6 || type == SW_SOCK_UNIX_STREAM);
}
bool is_stream() {
return socket_type == SW_SOCK_TCP || socket_type == SW_SOCK_TCP6 || socket_type == SW_SOCK_UNIX_STREAM;
}
bool is_dgram() {
return socket_type == SW_SOCK_UDP || socket_type == SW_SOCK_UDP6 || socket_type == SW_SOCK_UNIX_DGRAM;
}
bool is_inet4() {
return socket_type == SW_SOCK_TCP || socket_type == SW_SOCK_UDP;
}
bool is_inet6() {
return socket_type == SW_SOCK_TCP6 || socket_type == SW_SOCK_UDP6;
}
bool is_inet() {
return is_inet4() || is_inet6();
}
bool is_local() {
return socket_type == SW_SOCK_UNIX_STREAM || socket_type == SW_SOCK_UNIX_DGRAM;
}
ssize_t write(const void *__buf, size_t __len) {
return ::write(fd, __buf, __len);
}
ssize_t read(void *__buf, size_t __len) {
return ::read(fd, __buf, __len);
}
int shutdown(int __how) {
return ::shutdown(fd, __how);
}
ssize_t sendto_blocking(const Address &dst_addr, const void *__buf, size_t __n, int flags = 0);
ssize_t recvfrom_blocking(char *__buf, size_t __len, int flags, Address *sa);
ssize_t sendto(const char *dst_host, int dst_port, const void *data, size_t len, int flags = 0) const {
Address addr = {};
if (!addr.assign(socket_type, dst_host, dst_port)) {
return SW_ERR;
}
return sendto(addr, data, len, flags);
}
ssize_t sendto(const Address &dst_addr, const void *data, size_t len, int flags) const {
return ::sendto(fd, data, len, flags, &dst_addr.addr.ss, dst_addr.len);
}
int catch_error(int err) const {
switch (err) {
case EFAULT:
abort();
return SW_ERROR;
case EBADF:
case ENOENT:
return SW_INVALID;
case ECONNRESET:
case ECONNABORTED:
case EPIPE:
case ENOTCONN:
case ETIMEDOUT:
case ECONNREFUSED:
case ENETDOWN:
case ENETUNREACH:
case EHOSTDOWN:
case EHOSTUNREACH:
case SW_ERROR_SSL_BAD_CLIENT:
case SW_ERROR_SSL_RESET:
return SW_CLOSE;
case EAGAIN:
#if EAGAIN != EWOULDBLOCK
case EWOULDBLOCK:
#endif
#ifdef HAVE_KQUEUE
case ENOBUFS:
#endif
case 0:
return SW_WAIT;
default:
return SW_ERROR;
}
}
int catch_write_error(int err) const {
switch (err) {
case ENOBUFS:
return SW_WAIT;
default:
return catch_error(err);
}
}
int catch_write_pipe_error(int err) {
switch (err) {
case ENOBUFS:
case EMSGSIZE:
return SW_REDUCE_SIZE;
default:
return catch_error(err);
}
}
int catch_read_error(int err) const {
return catch_error(err);
}
static inline SocketType convert_to_type(int domain, int type) {
if (domain == AF_INET && type == SOCK_STREAM) {
return SW_SOCK_TCP;
} else if (domain == AF_INET6 && type == SOCK_STREAM) {
return SW_SOCK_TCP6;
} else if (domain == AF_UNIX && type == SOCK_STREAM) {
return SW_SOCK_UNIX_STREAM;
} else if (domain == AF_INET && type == SOCK_DGRAM) {
return SW_SOCK_UDP;
} else if (domain == AF_INET6 && type == SOCK_DGRAM) {
return SW_SOCK_UDP6;
} else if (domain == AF_UNIX && type == SOCK_DGRAM) {
return SW_SOCK_UNIX_DGRAM;
} else {
return SW_SOCK_RAW;
}
}
static inline SocketType 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 int get_domain_and_type(SocketType type, int *sock_domain, int *sock_type) {
switch (type) {
case SW_SOCK_TCP6:
*sock_domain = AF_INET6;
*sock_type = SOCK_STREAM;
break;
case SW_SOCK_UNIX_STREAM:
*sock_domain = AF_UNIX;
*sock_type = SOCK_STREAM;
break;
case SW_SOCK_UDP:
*sock_domain = AF_INET;
*sock_type = SOCK_DGRAM;
break;
case SW_SOCK_UDP6:
*sock_domain = AF_INET6;
*sock_type = SOCK_DGRAM;
break;
case SW_SOCK_UNIX_DGRAM:
*sock_domain = AF_UNIX;
*sock_type = SOCK_DGRAM;
break;
case SW_SOCK_TCP:
*sock_domain = AF_INET;
*sock_type = SOCK_STREAM;
break;
default:
return SW_ERR;
}
return SW_OK;
}
};
int gethostbyname(int type, const char *name, char *addr);
int getaddrinfo(GetaddrinfoRequest *req);
} // namespace network
network::Socket *make_socket(int fd, FdType fd_type);
network::Socket *make_socket(SocketType socket_type, FdType fd_type, int flags);
network::Socket *make_socket(
SocketType type, FdType fd_type, int sock_domain, int sock_type, int socket_protocol, int flags);
int socket(int sock_domain, int sock_type, int socket_protocol, int flags);
network::Socket *make_server_socket(SocketType socket_type,
const char *address,
int port = 0,
int backlog = SW_BACKLOG);
bool verify_ip(int __af, const std::string &str);
} // namespace swoole
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