diff options
Diffstat (limited to 'src/v1_decoder.cpp')
-rw-r--r-- | src/v1_decoder.cpp | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/src/v1_decoder.cpp b/src/v1_decoder.cpp deleted file mode 100644 index b50f67f..0000000 --- a/src/v1_decoder.cpp +++ /dev/null @@ -1,148 +0,0 @@ -/* - Copyright (c) 2007-2013 Contributors as noted in the AUTHORS file - - This file is part of 0MQ. - - 0MQ is free software; you can redistribute it and/or modify it under - the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - 0MQ 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 <stdlib.h> -#include <string.h> -#include <limits> - -#include "platform.hpp" -#if defined ZMQ_HAVE_WINDOWS -#include "windows.hpp" -#endif - -#include "decoder.hpp" -#include "v1_decoder.hpp" -#include "likely.hpp" -#include "wire.hpp" -#include "err.hpp" - -zmq::v1_decoder_t::v1_decoder_t (size_t bufsize_, int64_t maxmsgsize_) : - decoder_base_t <v1_decoder_t> (bufsize_), - maxmsgsize (maxmsgsize_) -{ - int rc = in_progress.init (); - errno_assert (rc == 0); - - // At the beginning, read one byte and go to one_byte_size_ready state. - next_step (tmpbuf, 1, &v1_decoder_t::one_byte_size_ready); -} - -zmq::v1_decoder_t::~v1_decoder_t () -{ - int rc = in_progress.close (); - errno_assert (rc == 0); -} - -int zmq::v1_decoder_t::one_byte_size_ready () -{ - // First byte of size is read. If it is 0xff read 8-byte size. - // Otherwise allocate the buffer for message data and read the - // message data into it. - if (*tmpbuf == 0xff) - next_step (tmpbuf, 8, &v1_decoder_t::eight_byte_size_ready); - else { - - // There has to be at least one byte (the flags) in the message). - if (!*tmpbuf) { - errno = EPROTO; - return -1; - } - - if (maxmsgsize >= 0 && (int64_t) (*tmpbuf - 1) > maxmsgsize) { - errno = EMSGSIZE; - return -1; - } - - // in_progress is initialised at this point so in theory we should - // close it before calling zmq_msg_init_size, however, it's a 0-byte - // message and thus we can treat it as uninitialised... - int rc = in_progress.init_size (*tmpbuf - 1); - if (rc != 0) { - errno_assert (errno == ENOMEM); - rc = in_progress.init (); - errno_assert (rc == 0); - errno = ENOMEM; - return -1; - } - - next_step (tmpbuf, 1, &v1_decoder_t::flags_ready); - } - return 0; -} - -int zmq::v1_decoder_t::eight_byte_size_ready () -{ - // 8-byte payload length is read. Allocate the buffer - // for message body and read the message data into it. - const uint64_t payload_length = get_uint64 (tmpbuf); - - // There has to be at least one byte (the flags) in the message). - if (payload_length == 0) { - errno = EPROTO; - return -1; - } - - // Message size must not exceed the maximum allowed size. - if (maxmsgsize >= 0 && payload_length - 1 > (uint64_t) maxmsgsize) { - errno = EMSGSIZE; - return -1; - } - - // Message size must fit within range of size_t data type. - if (payload_length - 1 > std::numeric_limits <size_t>::max ()) { - errno = EMSGSIZE; - return -1; - } - - const size_t msg_size = static_cast <size_t> (payload_length - 1); - - // in_progress is initialised at this point so in theory we should - // close it before calling init_size, however, it's a 0-byte - // message and thus we can treat it as uninitialised... - int rc = in_progress.init_size (msg_size); - if (rc != 0) { - errno_assert (errno == ENOMEM); - rc = in_progress.init (); - errno_assert (rc == 0); - errno = ENOMEM; - return -1; - } - - next_step (tmpbuf, 1, &v1_decoder_t::flags_ready); - return 0; -} - -int zmq::v1_decoder_t::flags_ready () -{ - // Store the flags from the wire into the message structure. - in_progress.set_flags (tmpbuf [0] & msg_t::more); - - next_step (in_progress.data (), in_progress.size (), - &v1_decoder_t::message_ready); - - return 0; -} - -int zmq::v1_decoder_t::message_ready () -{ - // Message is completely read. Push it further and start reading - // new message. (in_progress is a 0-byte message after this point.) - next_step (tmpbuf, 1, &v1_decoder_t::one_byte_size_ready); - return 1; -} |