1 files changed, 358 insertions, 0 deletions
diff --git a/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/null_mechanism.cpp b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/null_mechanism.cpp
new file mode 100644
index 00000000..d9157e20
--- /dev/null
+++ b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/null_mechanism.cpp
@@ -0,0 +1,358 @@
+/*
+    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 "platform.hpp"
+#ifdef ZMQ_HAVE_WINDOWS
+#include "windows.hpp"
+#endif
+
+#include <stddef.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "err.hpp"
+#include "msg.hpp"
+#include "session_base.hpp"
+#include "wire.hpp"
+#include "null_mechanism.hpp"
+
+zmq::null_mechanism_t::null_mechanism_t (session_base_t *session_,
+                                         const std::string &peer_address_,
+                                         const options_t &options_) :
+    mechanism_t (options_),
+    session (session_),
+    peer_address (peer_address_),
+    ready_command_sent (false),
+    error_command_sent (false),
+    ready_command_received (false),
+    error_command_received (false),
+    zap_connected (false),
+    zap_request_sent (false),
+    zap_reply_received (false)
+{
+    //  NULL mechanism only uses ZAP if there's a domain defined
+    //  This prevents ZAP requests on naive sockets
+    if (options.zap_domain.size () > 0
+    &&  session->zap_connect () == 0)
+        zap_connected = true;
+}
+
+zmq::null_mechanism_t::~null_mechanism_t ()
+{
+}
+
+int zmq::null_mechanism_t::next_handshake_command (msg_t *msg_)
+{
+    if (ready_command_sent || error_command_sent) {
+        errno = EAGAIN;
+        return -1;
+    }
+    if (zap_connected && !zap_reply_received) {
+        if (zap_request_sent) {
+            errno = EAGAIN;
+            return -1;
+        }
+        send_zap_request ();
+        zap_request_sent = true;
+        const int rc = receive_and_process_zap_reply ();
+        if (rc != 0)
+            return -1;
+        zap_reply_received = true;
+    }
+
+    if (zap_reply_received
+    &&  strncmp (status_code, "200", sizeof status_code) != 0) {
+        const int rc = msg_->init_size (6 + 1 + sizeof status_code);
+        zmq_assert (rc == 0);
+        unsigned char *msg_data =
+            static_cast <unsigned char *> (msg_->data ());
+        memcpy (msg_data, "\5ERROR", 6);
+        msg_data [6] = sizeof status_code;
+        memcpy (msg_data + 7, status_code, sizeof status_code);
+        error_command_sent = true;
+        return 0;
+    }
+
+    unsigned char *const command_buffer = (unsigned char *) malloc (512);
+    alloc_assert (command_buffer);
+
+    unsigned char *ptr = command_buffer;
+
+    //  Add mechanism string
+    memcpy (ptr, "\5READY", 6);
+    ptr += 6;
+
+    //  Add socket type property
+    const char *socket_type = socket_type_string (options.type);
+    ptr += add_property (ptr, "Socket-Type", socket_type, strlen (socket_type));
+
+    //  Add identity property
+    if (options.type == ZMQ_REQ
+    ||  options.type == ZMQ_DEALER
+    ||  options.type == ZMQ_ROUTER)
+        ptr += add_property (ptr, "Identity", options.identity, options.identity_size);
+
+    const size_t command_size = ptr - command_buffer;
+    const int rc = msg_->init_size (command_size);
+    errno_assert (rc == 0);
+    memcpy (msg_->data (), command_buffer, command_size);
+    free (command_buffer);
+
+    ready_command_sent = true;
+
+    return 0;
+}
+
+int zmq::null_mechanism_t::process_handshake_command (msg_t *msg_)
+{
+    if (ready_command_received || error_command_received) {
+        //  Temporary support for security debugging
+        puts ("NULL I: client sent invalid NULL handshake (duplicate READY)");
+        errno = EPROTO;
+        return -1;
+    }
+
+    const unsigned char *cmd_data =
+        static_cast <unsigned char *> (msg_->data ());
+    const size_t data_size = msg_->size ();
+
+    int rc = 0;
+    if (data_size >= 6 && !memcmp (cmd_data, "\5READY", 6))
+        rc = process_ready_command (cmd_data, data_size);
+    else
+    if (data_size >= 6 && !memcmp (cmd_data, "\5ERROR", 6))
+        rc = process_error_command (cmd_data, data_size);
+    else {
+        //  Temporary support for security debugging
+        puts ("NULL I: client sent invalid NULL handshake (not READY)");
+        errno = EPROTO;
+        rc = -1;
+    }
+
+    if (rc == 0) {
+        int rc = msg_->close ();
+        errno_assert (rc == 0);
+        rc = msg_->init ();
+        errno_assert (rc == 0);
+    }
+    return rc;
+}
+
+int zmq::null_mechanism_t::process_ready_command (
+        const unsigned char *cmd_data, size_t data_size)
+{
+    ready_command_received = true;
+    return parse_metadata (cmd_data + 6, data_size - 6);
+}
+
+int zmq::null_mechanism_t::process_error_command (
+        const unsigned char *cmd_data, size_t data_size)
+{
+    if (data_size < 7) {
+        errno = EPROTO;
+        return -1;
+    }
+    const size_t error_reason_len = static_cast <size_t> (cmd_data [6]);
+    if (error_reason_len > data_size - 7) {
+        errno = EPROTO;
+        return -1;
+    }
+    error_command_received = true;
+    return 0;
+}
+
+int zmq::null_mechanism_t::zap_msg_available ()
+{
+    if (zap_reply_received) {
+        errno = EFSM;
+        return -1;
+    }
+    const int rc = receive_and_process_zap_reply ();
+    if (rc == 0)
+        zap_reply_received = true;
+    return rc;
+}
+
+zmq::mechanism_t::status_t zmq::null_mechanism_t::status () const
+{
+    const bool command_sent =
+        ready_command_sent || error_command_sent;
+    const bool command_received =
+        ready_command_received || error_command_received;
+
+    if (ready_command_sent && ready_command_received)
+        return ready;
+    else
+    if (command_sent && command_received)
+        return error;
+    else
+        return handshaking;
+}
+
+void zmq::null_mechanism_t::send_zap_request ()
+{
+    int rc;
+    msg_t msg;
+
+    //  Address delimiter frame
+    rc = msg.init ();
+    errno_assert (rc == 0);
+    msg.set_flags (msg_t::more);
+    rc = session->write_zap_msg (&msg);
+    errno_assert (rc == 0);
+
+    //  Version frame
+    rc = msg.init_size (3);
+    errno_assert (rc == 0);
+    memcpy (msg.data (), "1.0", 3);
+    msg.set_flags (msg_t::more);
+    rc = session->write_zap_msg (&msg);
+    errno_assert (rc == 0);
+
+    //  Request id frame
+    rc = msg.init_size (1);
+    errno_assert (rc == 0);
+    memcpy (msg.data (), "1", 1);
+    msg.set_flags (msg_t::more);
+    rc = session->write_zap_msg (&msg);
+    errno_assert (rc == 0);
+
+    //  Domain frame
+    rc = msg.init_size (options.zap_domain.length ());
+    errno_assert (rc == 0);
+    memcpy (msg.data (), options.zap_domain.c_str (), options.zap_domain.length ());
+    msg.set_flags (msg_t::more);
+    rc = session->write_zap_msg (&msg);
+    errno_assert (rc == 0);
+
+    //  Address frame
+    rc = msg.init_size (peer_address.length ());
+    errno_assert (rc == 0);
+    memcpy (msg.data (), peer_address.c_str (), peer_address.length ());
+    msg.set_flags (msg_t::more);
+    rc = session->write_zap_msg (&msg);
+    errno_assert (rc == 0);
+
+    //  Identity frame
+    rc = msg.init_size (options.identity_size);
+    errno_assert (rc == 0);
+    memcpy (msg.data (), options.identity, options.identity_size);
+    msg.set_flags (msg_t::more);
+    rc = session->write_zap_msg (&msg);
+    errno_assert (rc == 0);
+
+    //  Mechanism frame
+    rc = msg.init_size (4);
+    errno_assert (rc == 0);
+    memcpy (msg.data (), "NULL", 4);
+    rc = session->write_zap_msg (&msg);
+    errno_assert (rc == 0);
+}
+
+int zmq::null_mechanism_t::receive_and_process_zap_reply ()
+{
+    int rc = 0;
+    msg_t msg [7];  //  ZAP reply consists of 7 frames
+
+    //  Initialize all reply frames
+    for (int i = 0; i < 7; i++) {
+        rc = msg [i].init ();
+        errno_assert (rc == 0);
+    }
+
+    for (int i = 0; i < 7; i++) {
+        rc = session->read_zap_msg (&msg [i]);
+        if (rc == -1)
+            break;
+        if ((msg [i].flags () & msg_t::more) == (i < 6? 0: msg_t::more)) {
+            //  Temporary support for security debugging
+            puts ("NULL I: ZAP handler sent incomplete reply message");
+            errno = EPROTO;
+            rc = -1;
+            break;
+        }
+    }
+
+    if (rc != 0)
+        goto error;
+
+    //  Address delimiter frame
+    if (msg [0].size () > 0) {
+        //  Temporary support for security debugging
+        puts ("NULL I: ZAP handler sent malformed reply message");
+        errno = EPROTO;
+        rc = -1;
+        goto error;
+    }
+
+    //  Version frame
+    if (msg [1].size () != 3 || memcmp (msg [1].data (), "1.0", 3)) {
+        //  Temporary support for security debugging
+        puts ("NULL I: ZAP handler sent bad version number");
+        errno = EPROTO;
+        rc = -1;
+        goto error;
+    }
+
+    //  Request id frame
+    if (msg [2].size () != 1 || memcmp (msg [2].data (), "1", 1)) {
+        //  Temporary support for security debugging
+        puts ("NULL I: ZAP handler sent bad request ID");
+        errno = EPROTO;
+        rc = -1;
+        goto error;
+    }
+
+    //  Status code frame
+    if (msg [3].size () != 3) {
+        //  Temporary support for security debugging
+        puts ("NULL I: ZAP handler rejected client authentication");
+        errno = EPROTO;
+        rc = -1;
+        goto error;
+    }
+
+    //  Save status code
+    memcpy (status_code, msg [3].data (), sizeof status_code);
+
+    //  Save user id
+    set_user_id (msg [5].data (), msg [5].size ());
+
+    //  Process metadata frame
+    rc = parse_metadata (static_cast <const unsigned char*> (msg [6].data ()),
+                         msg [6].size (), true);
+
+error:
+    for (int i = 0; i < 7; i++) {
+        const int rc2 = msg [i].close ();
+        errno_assert (rc2 == 0);
+    }
+
+    return rc;
+}