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authorDan Klein <danklei@cisco.com>2015-08-24 13:22:48 +0300
committerDan Klein <danklei@cisco.com>2015-08-24 13:22:48 +0300
commitdab741a80699f86e86c91718872a052cca9bbb25 (patch)
tree1959c4a2cea440170a5113dcb067796cb20ffb64 /external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/socks_connecter.cpp
parentd3f26ece7d4383df0b22fe9c3cb3e695381ec737 (diff)
Fixed dependencies of Control Plane to use external_lib sources
Diffstat (limited to 'external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/socks_connecter.cpp')
-rw-r--r--external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/socks_connecter.cpp478
1 files changed, 478 insertions, 0 deletions
diff --git a/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/socks_connecter.cpp b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/socks_connecter.cpp
new file mode 100644
index 00000000..a3b70436
--- /dev/null
+++ b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/socks_connecter.cpp
@@ -0,0 +1,478 @@
+/*
+ Copyright (c) 2007-2015 Contributors as noted in the AUTHORS file
+
+ This file is part of libzmq, the ZeroMQ core engine in C++.
+
+ libzmq is free software; you can redistribute it and/or modify it under
+ the terms of the GNU Lesser General Public License (LGPL) as published
+ by the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ As a special exception, the Contributors give you permission to link
+ this library with independent modules to produce an executable,
+ regardless of the license terms of these independent modules, and to
+ copy and distribute the resulting executable under terms of your choice,
+ provided that you also meet, for each linked independent module, the
+ terms and conditions of the license of that module. An independent
+ module is a module which is not derived from or based on this library.
+ If you modify this library, you must extend this exception to your
+ version of the library.
+
+ libzmq is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+ License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <new>
+#include <string>
+
+#include "socks_connecter.hpp"
+#include "stream_engine.hpp"
+#include "platform.hpp"
+#include "random.hpp"
+#include "err.hpp"
+#include "ip.hpp"
+#include "tcp.hpp"
+#include "address.hpp"
+#include "tcp_address.hpp"
+#include "session_base.hpp"
+#include "socks.hpp"
+
+#ifdef ZMQ_HAVE_WINDOWS
+#include "windows.hpp"
+#else
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#endif
+
+zmq::socks_connecter_t::socks_connecter_t (class io_thread_t *io_thread_,
+ class session_base_t *session_, const options_t &options_,
+ address_t *addr_, address_t *proxy_addr_, bool delayed_start_) :
+ own_t (io_thread_, options_),
+ io_object_t (io_thread_),
+ addr (addr_),
+ proxy_addr (proxy_addr_),
+ status (unplugged),
+ s (retired_fd),
+ delayed_start (delayed_start_),
+ session (session_),
+ current_reconnect_ivl (options.reconnect_ivl)
+{
+ zmq_assert (addr);
+ zmq_assert (addr->protocol == "tcp");
+ proxy_addr->to_string (endpoint);
+ socket = session->get_socket ();
+}
+
+zmq::socks_connecter_t::~socks_connecter_t ()
+{
+ zmq_assert (s == retired_fd);
+ delete proxy_addr;
+}
+
+void zmq::socks_connecter_t::process_plug ()
+{
+ if (delayed_start)
+ start_timer ();
+ else
+ initiate_connect ();
+}
+
+void zmq::socks_connecter_t::process_term (int linger_)
+{
+ switch (status) {
+ case unplugged:
+ break;
+ case waiting_for_reconnect_time:
+ cancel_timer (reconnect_timer_id);
+ break;
+ case waiting_for_proxy_connection:
+ case sending_greeting:
+ case waiting_for_choice:
+ case sending_request:
+ case waiting_for_response:
+ rm_fd (handle);
+ if (s != retired_fd)
+ close ();
+ break;
+ }
+
+ own_t::process_term (linger_);
+}
+
+void zmq::socks_connecter_t::in_event ()
+{
+ zmq_assert (status != unplugged
+ && status != waiting_for_reconnect_time);
+
+ if (status == waiting_for_choice) {
+ const int rc = choice_decoder.input (s);
+ if (rc == 0 || rc == -1)
+ error ();
+ else
+ if (choice_decoder.message_ready ()) {
+ const socks_choice_t choice = choice_decoder.decode ();
+ const int rc = process_server_response (choice);
+ if (rc == -1)
+ error ();
+ else {
+ std::string hostname = "";
+ uint16_t port = 0;
+ if (parse_address (addr->address, hostname, port) == -1)
+ error ();
+ else {
+ request_encoder.encode (
+ socks_request_t (1, hostname, port));
+ reset_pollin (handle);
+ set_pollout (handle);
+ status = sending_request;
+ }
+ }
+ }
+ }
+ else
+ if (status == waiting_for_response) {
+ const int rc = response_decoder.input (s);
+ if (rc == 0 || rc == -1)
+ error ();
+ else
+ if (response_decoder.message_ready ()) {
+ const socks_response_t response = response_decoder.decode ();
+ const int rc = process_server_response (response);
+ if (rc == -1)
+ error ();
+ else {
+ // Remember our fd for ZMQ_SRCFD in messages
+ socket->set_fd (s);
+
+ // Create the engine object for this connection.
+ stream_engine_t *engine = new (std::nothrow)
+ stream_engine_t (s, options, endpoint);
+ alloc_assert (engine);
+
+ // Attach the engine to the corresponding session object.
+ send_attach (session, engine);
+
+ socket->event_connected (endpoint, s);
+
+ rm_fd (handle);
+ s = -1;
+ status = unplugged;
+
+ // Shut the connecter down.
+ terminate ();
+ }
+ }
+ }
+ else
+ error ();
+}
+
+void zmq::socks_connecter_t::out_event ()
+{
+ zmq_assert (status == waiting_for_proxy_connection
+ || status == sending_greeting
+ || status == sending_request);
+
+ if (status == waiting_for_proxy_connection) {
+ const int rc = check_proxy_connection ();
+ if (rc == -1)
+ error ();
+ else {
+ greeting_encoder.encode (
+ socks_greeting_t (socks_no_auth_required));
+ status = sending_greeting;
+ }
+ }
+ else
+ if (status == sending_greeting) {
+ zmq_assert (greeting_encoder.has_pending_data ());
+ const int rc = greeting_encoder.output (s);
+ if (rc == -1 || rc == 0)
+ error ();
+ else
+ if (!greeting_encoder.has_pending_data ()) {
+ reset_pollout (handle);
+ set_pollin (handle);
+ status = waiting_for_choice;
+ }
+ }
+ else {
+ zmq_assert (request_encoder.has_pending_data ());
+ const int rc = request_encoder.output (s);
+ if (rc == -1 || rc == 0)
+ error ();
+ else
+ if (!request_encoder.has_pending_data ()) {
+ reset_pollout (handle);
+ set_pollin (handle);
+ status = waiting_for_response;
+ }
+ }
+}
+
+void zmq::socks_connecter_t::initiate_connect ()
+{
+ // Open the connecting socket.
+ const int rc = connect_to_proxy ();
+
+ // Connect may succeed in synchronous manner.
+ if (rc == 0) {
+ handle = add_fd (s);
+ set_pollout (handle);
+ status = sending_greeting;
+ }
+ // Connection establishment may be delayed. Poll for its completion.
+ else
+ if (errno == EINPROGRESS) {
+ handle = add_fd (s);
+ set_pollout (handle);
+ status = waiting_for_proxy_connection;
+ socket->event_connect_delayed (endpoint, zmq_errno ());
+ }
+ // Handle any other error condition by eventual reconnect.
+ else {
+ if (s != retired_fd)
+ close ();
+ start_timer ();
+ }
+}
+
+int zmq::socks_connecter_t::process_server_response (
+ const socks_choice_t &response)
+{
+ // We do not support any authentication method for now.
+ return response.method == 0? 0: -1;
+}
+
+int zmq::socks_connecter_t::process_server_response (
+ const socks_response_t &response)
+{
+ return response.response_code == 0? 0: -1;
+}
+
+void zmq::socks_connecter_t::timer_event (int id_)
+{
+ zmq_assert (status == waiting_for_reconnect_time);
+ zmq_assert (id_ == reconnect_timer_id);
+ initiate_connect ();
+}
+
+void zmq::socks_connecter_t::error ()
+{
+ rm_fd (handle);
+ close ();
+ greeting_encoder.reset ();
+ choice_decoder.reset ();
+ request_encoder.reset ();
+ response_decoder.reset ();
+ start_timer ();
+}
+
+void zmq::socks_connecter_t::start_timer ()
+{
+ const int interval = get_new_reconnect_ivl ();
+ add_timer (interval, reconnect_timer_id);
+ status = waiting_for_reconnect_time;
+ socket->event_connect_retried (endpoint, interval);
+}
+
+int zmq::socks_connecter_t::get_new_reconnect_ivl ()
+{
+ // The new interval is the current interval + random value.
+ const int interval = current_reconnect_ivl +
+ generate_random () % options.reconnect_ivl;
+
+ // Only change the current reconnect interval if the maximum reconnect
+ // interval was set and if it's larger than the reconnect interval.
+ if (options.reconnect_ivl_max > 0 &&
+ options.reconnect_ivl_max > options.reconnect_ivl)
+ // Calculate the next interval
+ current_reconnect_ivl =
+ std::min (current_reconnect_ivl * 2, options.reconnect_ivl_max);
+ return interval;
+}
+
+int zmq::socks_connecter_t::connect_to_proxy ()
+{
+ zmq_assert (s == retired_fd);
+
+ // Resolve the address
+ delete proxy_addr->resolved.tcp_addr;
+ proxy_addr->resolved.tcp_addr = new (std::nothrow) tcp_address_t ();
+ alloc_assert (proxy_addr->resolved.tcp_addr);
+
+ int rc = proxy_addr->resolved.tcp_addr->resolve (
+ proxy_addr->address.c_str (), false, options.ipv6);
+ if (rc != 0) {
+ delete proxy_addr->resolved.tcp_addr;
+ proxy_addr->resolved.tcp_addr = NULL;
+ return -1;
+ }
+ zmq_assert (proxy_addr->resolved.tcp_addr != NULL);
+ const tcp_address_t *tcp_addr = proxy_addr->resolved.tcp_addr;
+
+ // Create the socket.
+ s = open_socket (tcp_addr->family (), SOCK_STREAM, IPPROTO_TCP);
+#ifdef ZMQ_HAVE_WINDOWS
+ if (s == INVALID_SOCKET)
+ return -1;
+#else
+ if (s == -1)
+ return -1;
+#endif
+
+ // On some systems, IPv4 mapping in IPv6 sockets is disabled by default.
+ // Switch it on in such cases.
+ if (tcp_addr->family () == AF_INET6)
+ enable_ipv4_mapping (s);
+
+ // Set the IP Type-Of-Service priority for this socket
+ if (options.tos != 0)
+ set_ip_type_of_service (s, options.tos);
+
+ // Set the socket to non-blocking mode so that we get async connect().
+ unblock_socket (s);
+
+ // Set the socket buffer limits for the underlying socket.
+ if (options.sndbuf != 0)
+ set_tcp_send_buffer (s, options.sndbuf);
+ if (options.rcvbuf != 0)
+ set_tcp_receive_buffer (s, options.rcvbuf);
+
+ // Set the IP Type-Of-Service for the underlying socket
+ if (options.tos != 0)
+ set_ip_type_of_service (s, options.tos);
+
+ // Set a source address for conversations
+ if (tcp_addr->has_src_addr ()) {
+ rc = ::bind (s, tcp_addr->src_addr (), tcp_addr->src_addrlen ());
+ if (rc == -1) {
+ close ();
+ return -1;
+ }
+ }
+
+ // Connect to the remote peer.
+ rc = ::connect (s, tcp_addr->addr (), tcp_addr->addrlen ());
+
+ // Connect was successfull immediately.
+ if (rc == 0)
+ return 0;
+
+ // Translate error codes indicating asynchronous connect has been
+ // launched to a uniform EINPROGRESS.
+#ifdef ZMQ_HAVE_WINDOWS
+ const int error_code = WSAGetLastError ();
+ if (error_code == WSAEINPROGRESS || error_code == WSAEWOULDBLOCK)
+ errno = EINPROGRESS;
+ else {
+ errno = wsa_error_to_errno (error_code);
+ close ();
+ }
+#else
+ if (errno == EINTR)
+ errno = EINPROGRESS;
+#endif
+ return -1;
+}
+
+zmq::fd_t zmq::socks_connecter_t::check_proxy_connection ()
+{
+ // Async connect has finished. Check whether an error occurred
+ int err = 0;
+#ifdef ZMQ_HAVE_HPUX
+ int len = sizeof err;
+#else
+ socklen_t len = sizeof err;
+#endif
+
+ const int rc = getsockopt (s, SOL_SOCKET, SO_ERROR, (char*) &err, &len);
+
+ // Assert if the error was caused by 0MQ bug.
+ // Networking problems are OK. No need to assert.
+#ifdef ZMQ_HAVE_WINDOWS
+ zmq_assert (rc == 0);
+ if (err != 0) {
+ wsa_assert (err == WSAECONNREFUSED
+ || err == WSAETIMEDOUT
+ || err == WSAECONNABORTED
+ || err == WSAEHOSTUNREACH
+ || err == WSAENETUNREACH
+ || err == WSAENETDOWN
+ || err == WSAEACCES
+ || err == WSAEINVAL
+ || err == WSAEADDRINUSE);
+ return -1;
+ }
+#else
+ // Following code should handle both Berkeley-derived socket
+ // implementations and Solaris.
+ if (rc == -1)
+ err = errno;
+ if (err != 0) {
+ errno = err;
+ errno_assert (
+ errno == ECONNREFUSED ||
+ errno == ECONNRESET ||
+ errno == ETIMEDOUT ||
+ errno == EHOSTUNREACH ||
+ errno == ENETUNREACH ||
+ errno == ENETDOWN ||
+ errno == EINVAL);
+ return -1;
+ }
+#endif
+
+ tune_tcp_socket (s);
+ tune_tcp_keepalives (s, options.tcp_keepalive, options.tcp_keepalive_cnt,
+ options.tcp_keepalive_idle, options.tcp_keepalive_intvl);
+
+ return 0;
+}
+
+void zmq::socks_connecter_t::close ()
+{
+ zmq_assert (s != retired_fd);
+#ifdef ZMQ_HAVE_WINDOWS
+ const int rc = closesocket (s);
+ wsa_assert (rc != SOCKET_ERROR);
+#else
+ const int rc = ::close (s);
+ errno_assert (rc == 0);
+#endif
+ socket->event_closed (endpoint, s);
+ s = retired_fd;
+}
+
+int zmq::socks_connecter_t::parse_address (
+ const std::string &address_, std::string &hostname_, uint16_t &port_)
+{
+ // Find the ':' at end that separates address from the port number.
+ const size_t idx = address_.rfind (':');
+ if (idx == std::string::npos) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Extract hostname
+ if (idx < 2 || address_ [0] != '[' || address_ [idx - 1] != ']')
+ hostname_ = address_.substr (0, idx);
+ else
+ hostname_ = address_.substr (1, idx - 2);
+
+ // Separate the hostname/port.
+ const std::string port_str = address_.substr (idx + 1);
+ // Parse the port number (0 is not a valid port).
+ port_ = (uint16_t) atoi (port_str.c_str ());
+ if (port_ == 0) {
+ errno = EINVAL;
+ return -1;
+ }
+ return 0;
+}