aa7bac3cc0
Merged in Dan's thermocouple support Define serial port allocation in Pins_duet.h Fixed some leaks of OutputBuffer objects under error conditions The terminating newline character in a gcode response is now added in HandleReply
1384 lines
33 KiB
C++
1384 lines
33 KiB
C++
/****************************************************************************************************
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RepRapFirmware - Network: RepRapPro Ormerod with Arduino Due controller
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2014-04-05 Created from portions taken out of Platform.cpp by dc42
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2014-04-07 Added portions of httpd.c. These portions are subject to the following copyright notice:
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* Copyright (c) 2001-2003 Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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* (end httpd.c copyright notice)
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****************************************************************************************************/
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#include "RepRapFirmware.h"
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#ifdef LWIP_STATS
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#include "lwip/src/include/lwip/stats.h"
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#endif
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extern "C"
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{
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#include "lwipopts.h"
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#include "lwip/src/include/lwip/tcp.h"
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#include "contrib/apps/netbios/netbios.h"
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}
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static tcp_pcb *http_pcb = nullptr;
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static tcp_pcb *ftp_main_pcb = nullptr;
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static tcp_pcb *ftp_pasv_pcb = nullptr;
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static tcp_pcb *telnet_pcb = nullptr;
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static bool closingDataPort = false;
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static volatile bool lwipLocked = false;
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static NetworkTransaction *sendingTransaction = nullptr;
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static uint32_t sendingWindow32[(TCP_WND + 3)/4]; // should be 32-bit aligned for efficiency
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static inline char* sendingWindow() { return reinterpret_cast<char*>(sendingWindow32); }
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static uint16_t sendingWindowSize, sentDataOutstanding;
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static uint8_t sendingRetries;
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static uint16_t httpPort = DEFAULT_HTTP_PORT;
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// Called only by LWIP to put out a message.
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// May be called from C as well as C++
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extern "C" void RepRapNetworkMessage(const char* s)
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{
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#ifdef LWIP_DEBUG
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reprap.GetPlatform()->Message(DEBUG_MESSAGE, s);
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#else
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reprap.GetPlatform()->Message(HOST_MESSAGE, s);
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#endif
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}
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/*-----------------------------------------------------------------------------------*/
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extern "C"
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{
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// Lock functions for LWIP (LWIP generally isn't thread-safe)
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bool LockLWIP()
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{
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if (lwipLocked)
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return false;
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lwipLocked = true;
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return true;
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}
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void UnlockLWIP()
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{
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lwipLocked = false;
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}
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// Callback functions for the EMAC driver (called from ISR)
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static void emac_read_packet(uint32_t ul_status)
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{
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// Because the LWIP stack can become corrupted if we work with it in parallel,
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// we may have to wait for the next Spin() call to read the next packet.
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if (ethernet_is_ready() && LockLWIP())
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{
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do {
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// read all queued packets from the RX buffer
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} while (ethernet_read());
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UnlockLWIP();
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}
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else
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{
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reprap.GetNetwork()->ReadPacket();
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ethernet_set_rx_callback(nullptr);
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}
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}
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// Callback functions called by LWIP (may be called from ISR)
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static void conn_err(void *arg, err_t err)
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{
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// Report the error to the monitor
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reprap.GetPlatform()->MessageF(HOST_MESSAGE, "Network: Connection error, code %d\n", err);
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ConnectionState *cs = (ConnectionState*)arg;
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if (cs != nullptr)
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{
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reprap.GetNetwork()->ConnectionClosed(cs, false); // tell the higher levels about the error
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if (sendingTransaction == cs->sendingTransaction)
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{
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sendingTransaction = nullptr;
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sentDataOutstanding = 0;
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}
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}
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}
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/*-----------------------------------------------------------------------------------*/
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static err_t conn_poll(void *arg, tcp_pcb *pcb)
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{
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ConnectionState *cs = (ConnectionState*)arg;
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if (cs != nullptr && sendingTransaction != nullptr && cs == sendingTransaction->GetConnection())
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{
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// We tried to send data, but didn't receive an ACK within reasonable time.
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sendingRetries++;
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if (sendingRetries == 4)
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{
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reprap.GetPlatform()->Message(HOST_MESSAGE, "Network: Poll received error!\n");
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tcp_abort(pcb);
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return ERR_ABRT;
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}
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// Try to send the remaining data once again
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err_t err = tcp_write(pcb, sendingWindow() + (sendingWindowSize - sentDataOutstanding), sentDataOutstanding, 0);
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if (err == ERR_OK)
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{
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tcp_output(pcb);
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}
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else
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{
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reprap.GetPlatform()->MessageF(HOST_MESSAGE, "Network: tcp_write in conn_poll failed with code %d\n", err);
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tcp_abort(pcb);
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return ERR_ABRT;
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}
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}
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return ERR_OK;
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}
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/*-----------------------------------------------------------------------------------*/
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static err_t conn_sent(void *arg, tcp_pcb *pcb, u16_t len)
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{
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LWIP_UNUSED_ARG(pcb);
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ConnectionState *cs = (ConnectionState*)arg;
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if (cs != nullptr)
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{
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reprap.GetNetwork()->SentPacketAcknowledged(cs, len);
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}
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return ERR_OK;
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}
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/*-----------------------------------------------------------------------------------*/
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static err_t conn_recv(void *arg, tcp_pcb *pcb, pbuf *p, err_t err)
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{
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ConnectionState *cs = (ConnectionState*)arg;
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if (err == ERR_OK && cs != nullptr)
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{
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if (cs->pcb != pcb)
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{
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reprap.GetPlatform()->Message(HOST_MESSAGE, "Network: Mismatched pcb!\n");
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tcp_abort(pcb);
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return ERR_ABRT;
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}
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if (p != nullptr)
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{
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// Tell higher levels that we are receiving data
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reprap.GetNetwork()->ReceiveInput(p, cs);
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}
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else if (cs->persistConnection)
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{
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// This is called when the connection has been gracefully closed, but LWIP doesn't close these
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// connections automatically. That's why we must do it once all packets have been read.
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reprap.GetNetwork()->ConnectionClosedGracefully(cs);
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}
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}
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return ERR_OK;
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}
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/*-----------------------------------------------------------------------------------*/
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static err_t conn_accept(void *arg, tcp_pcb *pcb, err_t err)
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{
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LWIP_UNUSED_ARG(arg);
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LWIP_UNUSED_ARG(err);
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tcp_setprio(pcb, TCP_PRIO_MIN);
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//RepRapNetworkMessage("conn_accept\n");
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/* Allocate a new ConnectionState for this connection */
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ConnectionState *cs = reprap.GetNetwork()->ConnectionAccepted(pcb);
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if (cs == nullptr)
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{
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tcp_abort(pcb);
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return ERR_ABRT;
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}
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/* Keep the listening PCBs running */
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switch (pcb->local_port) // tell LWIP to accept further connections on the listening PCB
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{
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case FTP_PORT: // FTP
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tcp_accepted(ftp_main_pcb);
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break;
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case TELNET_PORT: // Telnet
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tcp_accepted(telnet_pcb);
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break;
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default: // HTTP and FTP data
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tcp_accepted((pcb->local_port == httpPort) ? http_pcb : ftp_pasv_pcb);
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break;
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}
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tcp_arg(pcb, cs); // tell LWIP that this is the structure we wish to be passed for our callbacks
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tcp_recv(pcb, conn_recv); // tell LWIP that we wish to be informed of incoming data by a call to the conn_recv() function
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tcp_err(pcb, conn_err);
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tcp_poll(pcb, conn_poll, 4);
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return ERR_OK;
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}
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} // end extern "C"
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/*-----------------------------------------------------------------------------------*/
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void httpd_init()
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{
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tcp_pcb* pcb = tcp_new();
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tcp_bind(pcb, IP_ADDR_ANY, httpPort);
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http_pcb = tcp_listen(pcb);
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tcp_accept(http_pcb, conn_accept);
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}
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void ftpd_init()
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{
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tcp_pcb* pcb = tcp_new();
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tcp_bind(pcb, IP_ADDR_ANY, FTP_PORT);
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ftp_main_pcb = tcp_listen(pcb);
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tcp_accept(ftp_main_pcb, conn_accept);
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}
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void telnetd_init()
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{
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tcp_pcb* pcb = tcp_new();
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tcp_bind(pcb, IP_ADDR_ANY, TELNET_PORT);
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telnet_pcb = tcp_listen(pcb);
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tcp_accept(telnet_pcb, conn_accept);
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}
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//***************************************************************************************************
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// Network/Ethernet class
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Network::Network(Platform* p)
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: platform(p), freeTransactions(nullptr), readyTransactions(nullptr), writingTransactions(nullptr),
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state(NetworkInactive), isEnabled(true), readingData(false),
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dataCs(nullptr), ftpCs(nullptr), telnetCs(nullptr), freeConnections(nullptr)
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{
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for (size_t i = 0; i < NETWORK_TRANSACTION_COUNT; i++)
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{
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freeTransactions = new NetworkTransaction(freeTransactions);
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}
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for (size_t i = 0; i < MEMP_NUM_TCP_PCB; i++)
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{
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ConnectionState *cs = new ConnectionState;
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cs->next = freeConnections;
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freeConnections = cs;
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}
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strcpy(hostname, HOSTNAME);
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ethPinsInit();
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}
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void Network::AppendTransaction(NetworkTransaction* volatile* list, NetworkTransaction *r)
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{
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r->next = nullptr;
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while (*list != nullptr)
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{
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list = &((*list)->next);
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}
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*list = r;
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}
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void Network::PrependTransaction(NetworkTransaction* volatile* list, NetworkTransaction *r)
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{
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r->next = *list;
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*list = r;
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}
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void Network::Init()
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{
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longWait = platform->Time();
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state = NetworkPreInitializing;
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}
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void Network::Spin()
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{
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// Basically we can't do anything if we can't interact with LWIP
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if (!isEnabled || !LockLWIP())
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{
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platform->ClassReport(longWait);
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return;
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}
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if (state == NetworkActive)
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{
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// See if we can read any packets
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if (readingData)
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{
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do {
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// read all queued packets from the RX buffer
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} while (ethernet_read());
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if (ethernet_is_ready())
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{
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readingData = false;
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ethernet_set_rx_callback(&emac_read_packet);
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}
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}
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// See if we can send anything
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NetworkTransaction *r = writingTransactions;
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if (r != nullptr && r->Send())
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{
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// We're done, free up this transaction
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ConnectionState *cs = r->cs;
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NetworkTransaction *rn = r->nextWrite;
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writingTransactions = r->next;
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AppendTransaction(&freeTransactions, r);
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// If there is more data to write on this connection, do it next time
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if (cs != nullptr)
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{
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cs->sendingTransaction = rn;
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}
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if (rn != nullptr)
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{
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PrependTransaction(&writingTransactions, rn);
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}
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}
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}
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else if (state == NetworkPostInitializing && establish_ethernet_link())
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{
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start_ethernet(platform->IPAddress(), platform->NetMask(), platform->GateWay());
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ethernet_set_rx_callback(&emac_read_packet);
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httpd_init();
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ftpd_init();
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telnetd_init();
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netbios_init();
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state = NetworkActive;
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}
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UnlockLWIP();
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platform->ClassReport(longWait);
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}
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void Network::Interrupt()
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{
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if (isEnabled && LockLWIP())
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{
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ethernet_timers_update();
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UnlockLWIP();
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}
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}
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void Network::Diagnostics()
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{
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platform->Message(GENERIC_MESSAGE, "Network Diagnostics:\n");
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size_t numFreeConnections = 0;
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ConnectionState *freeConn = freeConnections;
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while (freeConn != nullptr)
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{
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numFreeConnections++;
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freeConn = freeConn->next;
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}
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platform->MessageF(GENERIC_MESSAGE, "Free connections: %d of %d\n", numFreeConnections, MEMP_NUM_TCP_PCB);
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size_t numFreeTransactions = 0;
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NetworkTransaction *freeTrans = freeTransactions;
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while (freeTrans != nullptr)
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{
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numFreeTransactions++;
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freeTrans = freeTrans->next;
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}
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platform->MessageF(GENERIC_MESSAGE, "Free transactions: %d of %d\n", numFreeTransactions, NETWORK_TRANSACTION_COUNT);
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#if LWIP_STATS
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// Normally we should NOT try to display LWIP stats here, because it uses debugPrintf(), which will hang the system is no USB cable is connected.
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if (reprap.Debug(moduleNetwork))
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{
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stats_display();
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}
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#endif
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}
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void Network::Enable()
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{
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if (state == NetworkPreInitializing)
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{
|
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// We must call this one only once, otherwise we risk a firmware crash
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init_ethernet(platform->MACAddress(), hostname);
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state = NetworkPostInitializing;
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}
|
|
|
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if (!isEnabled)
|
|
{
|
|
readingData = true;
|
|
isEnabled = true;
|
|
// EMAC RX callback will be reset on next Spin calls
|
|
if (state == NetworkInactive)
|
|
{
|
|
state = NetworkActive;
|
|
}
|
|
}
|
|
}
|
|
|
|
void Network::Disable()
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|
{
|
|
if (isEnabled)
|
|
{
|
|
readingData = false;
|
|
ethernet_set_rx_callback(nullptr);
|
|
if (state == NetworkActive)
|
|
{
|
|
state = NetworkInactive;
|
|
}
|
|
isEnabled = false;
|
|
}
|
|
}
|
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|
|
bool Network::IsEnabled() const
|
|
{
|
|
return isEnabled;
|
|
}
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|
|
|
uint16_t Network::GetHttpPort() const
|
|
{
|
|
return httpPort;
|
|
}
|
|
|
|
void Network::SetHttpPort(uint16_t port)
|
|
{
|
|
if (state == NetworkActive && port != httpPort)
|
|
{
|
|
// Close old HTTP port
|
|
tcp_close(http_pcb);
|
|
|
|
// Create a new one for the new port
|
|
tcp_pcb* pcb = tcp_new();
|
|
tcp_bind(pcb, IP_ADDR_ANY, port);
|
|
http_pcb = tcp_listen(pcb);
|
|
tcp_accept(http_pcb, conn_accept);
|
|
}
|
|
httpPort = port;
|
|
}
|
|
|
|
void Network::SentPacketAcknowledged(ConnectionState *cs, unsigned int len)
|
|
{
|
|
if (cs != nullptr && sendingTransaction != nullptr && cs == sendingTransaction->GetConnection())
|
|
{
|
|
if (sentDataOutstanding > len)
|
|
{
|
|
sentDataOutstanding -= len;
|
|
}
|
|
else
|
|
{
|
|
sendingTransaction = nullptr;
|
|
sentDataOutstanding = 0;
|
|
}
|
|
}
|
|
|
|
// debugPrintf("Network SentPacketAcknowledged: invalid cs=%08x\n", (unsigned int)cs);
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|
}
|
|
|
|
// This is called when a connection is being established and returns an initialised ConnectionState instance.
|
|
ConnectionState *Network::ConnectionAccepted(tcp_pcb *pcb)
|
|
{
|
|
ConnectionState *cs = freeConnections;
|
|
if (cs == nullptr)
|
|
{
|
|
platform->Message(HOST_MESSAGE, "Network::ConnectionAccepted() - no free ConnectionStates!\n");
|
|
return nullptr;
|
|
}
|
|
|
|
NetworkTransaction* r = freeTransactions;
|
|
if (r == nullptr)
|
|
{
|
|
platform->Message(HOST_MESSAGE, "Network::ConnectionAccepted() - no free transactions!\n");
|
|
return nullptr;
|
|
}
|
|
|
|
freeConnections = cs->next;
|
|
cs->Init(pcb);
|
|
|
|
r->Set(nullptr, cs, connected);
|
|
freeTransactions = r->next;
|
|
AppendTransaction(&readyTransactions, r);
|
|
|
|
return cs;
|
|
}
|
|
|
|
// This is called when a connection is being closed or has gone down.
|
|
// It must set the state of any NetworkTransaction that refers to it to connection lost.
|
|
void Network::ConnectionClosed(ConnectionState* cs, bool closeConnection)
|
|
{
|
|
// make sure these connections are not reused
|
|
if (cs == dataCs)
|
|
{
|
|
dataCs = nullptr;
|
|
}
|
|
if (cs == ftpCs)
|
|
{
|
|
ftpCs = nullptr;
|
|
}
|
|
if (cs == telnetCs)
|
|
{
|
|
telnetCs = nullptr;
|
|
}
|
|
|
|
// inform the Webserver that we are about to remove an existing connection
|
|
tcp_pcb *pcb = cs->pcb;
|
|
if (pcb != nullptr)
|
|
{
|
|
reprap.GetWebserver()->ConnectionLost(cs);
|
|
if (closeConnection)
|
|
{
|
|
tcp_arg(pcb, nullptr);
|
|
tcp_sent(pcb, nullptr);
|
|
tcp_recv(pcb, nullptr);
|
|
tcp_poll(pcb, nullptr, 4);
|
|
tcp_close(pcb);
|
|
cs->pcb = nullptr;
|
|
}
|
|
}
|
|
|
|
// cs points to a connection state block that the caller is about to release, so we need to stop referring to it.
|
|
// There may be one NetworkTransaction in the writing or closing list referring to it, and possibly more than one in the ready list.
|
|
|
|
for (NetworkTransaction* r = readyTransactions; r != nullptr; r = r->next)
|
|
{
|
|
if (r->cs == cs)
|
|
{
|
|
r->SetConnectionLost();
|
|
}
|
|
}
|
|
|
|
if (cs->sendingTransaction != nullptr)
|
|
{
|
|
cs->sendingTransaction->SetConnectionLost();
|
|
cs->sendingTransaction = nullptr;
|
|
}
|
|
|
|
cs->next = freeConnections;
|
|
freeConnections = cs;
|
|
}
|
|
|
|
void Network::ConnectionClosedGracefully(ConnectionState *cs)
|
|
{
|
|
NetworkTransaction* r = freeTransactions;
|
|
if (r == nullptr)
|
|
{
|
|
platform->Message(HOST_MESSAGE, "Network::ConnectionClosedGracefully() - no free transactions!\n");
|
|
return;
|
|
}
|
|
freeTransactions = r->next;
|
|
r->Set(nullptr, cs, disconnected);
|
|
|
|
AppendTransaction(&readyTransactions, r);
|
|
}
|
|
|
|
bool Network::Lock()
|
|
{
|
|
return LockLWIP();
|
|
}
|
|
|
|
void Network::Unlock()
|
|
{
|
|
UnlockLWIP();
|
|
}
|
|
|
|
bool Network::InLwip() const
|
|
{
|
|
return lwipLocked;
|
|
}
|
|
|
|
void Network::ReadPacket()
|
|
{
|
|
readingData = true;
|
|
}
|
|
|
|
void Network::ReceiveInput(pbuf *pb, ConnectionState* cs)
|
|
{
|
|
NetworkTransaction* r = freeTransactions;
|
|
if (r == nullptr)
|
|
{
|
|
platform->Message(HOST_MESSAGE, "Network::ReceiveInput() - no free transactions!\n");
|
|
return;
|
|
}
|
|
|
|
freeTransactions = r->next;
|
|
r->Set(pb, cs, dataReceiving);
|
|
|
|
AppendTransaction(&readyTransactions, r);
|
|
// debugPrintf("Network - input received\n");
|
|
}
|
|
|
|
// This is called by the web server to get a new received packet.
|
|
// If the connection parameter is nullptr, we just return the request at the head of the ready list.
|
|
// Otherwise, we are only interested in packets received from the specified connection. If we find one then
|
|
// we move it to the head of the ready list, so that a subsequent call with a null connection parameter
|
|
// will return the same one.
|
|
NetworkTransaction *Network::GetTransaction(const ConnectionState *cs)
|
|
{
|
|
// See if there is any transaction at all
|
|
NetworkTransaction *rs = readyTransactions;
|
|
if (rs == nullptr)
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
// If we're waiting for a new connection on a data port, see if there is a matching transaction available
|
|
if (cs == nullptr && rs->waitingForDataConnection)
|
|
{
|
|
for (NetworkTransaction *rsNext = rs->next; rsNext != nullptr; rsNext = rs->next)
|
|
{
|
|
if (rsNext->status == connected && rsNext->GetLocalPort() > 1023)
|
|
{
|
|
rs->next = rsNext->next; // remove rsNext from the list
|
|
rsNext->next = readyTransactions;
|
|
readyTransactions = rsNext;
|
|
return rsNext;
|
|
}
|
|
|
|
rs = rsNext;
|
|
}
|
|
|
|
return readyTransactions; // nothing found, process this transaction once again
|
|
}
|
|
|
|
// See if the first one is the transaction we're looking for
|
|
if (cs == nullptr || rs->cs == cs)
|
|
{
|
|
return rs;
|
|
}
|
|
|
|
// There is at least one ready transaction, but it's not on the connection we are looking for
|
|
for (NetworkTransaction *rsNext = rs->next; rsNext != nullptr; rsNext = rs->next)
|
|
{
|
|
if (rsNext->cs == cs)
|
|
{
|
|
rs->next = rsNext->next; // remove rsNext from the list
|
|
rsNext->next = readyTransactions;
|
|
readyTransactions = rsNext;
|
|
return rsNext;
|
|
}
|
|
|
|
rs = rsNext;
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
|
|
|
|
// The current NetworkTransaction must be processed again,
|
|
// e.g. because we're still waiting for another data connection.
|
|
void Network::WaitForDataConection()
|
|
{
|
|
NetworkTransaction *r = readyTransactions;
|
|
r->waitingForDataConnection = true;
|
|
r->inputPointer = 0; // behave as if this request hasn't been processed yet
|
|
}
|
|
|
|
uint8_t *Network::IPAddress() const
|
|
{
|
|
return reinterpret_cast<uint8_t*>(ðernet_get_configuration()->ip_addr.addr);
|
|
}
|
|
|
|
void Network::SetIPAddress(const uint8_t ipAddress[], const uint8_t netmask[], const uint8_t gateway[])
|
|
{
|
|
if (state == NetworkActive)
|
|
{
|
|
// This performs IP changes on-the-fly
|
|
ethernet_set_configuration(ipAddress, netmask, gateway);
|
|
}
|
|
}
|
|
|
|
void Network::OpenDataPort(uint16_t port)
|
|
{
|
|
closingDataPort = false;
|
|
tcp_pcb* pcb = tcp_new();
|
|
tcp_bind(pcb, IP_ADDR_ANY, port);
|
|
ftp_pasv_pcb = tcp_listen(pcb);
|
|
tcp_accept(ftp_pasv_pcb, conn_accept);
|
|
}
|
|
|
|
uint16_t Network::GetDataPort() const
|
|
{
|
|
return (closingDataPort || (ftp_pasv_pcb == nullptr) ? 0 : ftp_pasv_pcb->local_port);
|
|
}
|
|
|
|
// Close FTP data port and purge associated PCB
|
|
void Network::CloseDataPort()
|
|
{
|
|
// See if it's already being closed
|
|
if (closingDataPort)
|
|
{
|
|
return;
|
|
}
|
|
closingDataPort = true;
|
|
|
|
// Close remote connection of our data port or do it as soon as the current transaction has finished
|
|
if (dataCs != nullptr && dataCs->pcb != nullptr)
|
|
{
|
|
NetworkTransaction *mySendingTransaction = dataCs->sendingTransaction;
|
|
if (mySendingTransaction != nullptr)
|
|
{
|
|
mySendingTransaction->Close();
|
|
return;
|
|
}
|
|
}
|
|
|
|
// We can close it now, so do it here
|
|
if (ftp_pasv_pcb != nullptr)
|
|
{
|
|
tcp_accept(ftp_pasv_pcb, nullptr);
|
|
tcp_close(ftp_pasv_pcb);
|
|
ftp_pasv_pcb = nullptr;
|
|
}
|
|
closingDataPort = false;
|
|
}
|
|
|
|
// These methods keep track of our connections in case we need to send to one of them
|
|
void Network::SaveDataConnection()
|
|
{
|
|
dataCs = readyTransactions->cs;
|
|
}
|
|
|
|
void Network::SaveFTPConnection()
|
|
{
|
|
ftpCs = readyTransactions->cs;
|
|
}
|
|
|
|
void Network::SaveTelnetConnection()
|
|
{
|
|
telnetCs = readyTransactions->cs;
|
|
}
|
|
|
|
// Check if there are enough resources left to allocate another NetworkTransaction for sending
|
|
bool Network::CanAcquireTransaction()
|
|
{
|
|
return (freeTransactions != nullptr);
|
|
}
|
|
|
|
bool Network::AcquireFTPTransaction()
|
|
{
|
|
return AcquireTransaction(ftpCs);
|
|
}
|
|
|
|
bool Network::AcquireDataTransaction()
|
|
{
|
|
return AcquireTransaction(dataCs);
|
|
}
|
|
|
|
bool Network::AcquireTelnetTransaction()
|
|
{
|
|
return AcquireTransaction(telnetCs);
|
|
}
|
|
|
|
// Retrieves the NetworkTransaction of a sending connection to which data can be appended to,
|
|
// or prepares a released NetworkTransaction, which can easily be sent via Commit().
|
|
bool Network::AcquireTransaction(ConnectionState *cs)
|
|
{
|
|
// Make sure we have a valid connection
|
|
if (cs == nullptr)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// If our current transaction already belongs to cs and can be used, don't look for another one
|
|
NetworkTransaction *currentTransaction = readyTransactions;
|
|
if (currentTransaction != nullptr && currentTransaction->GetConnection() == cs && currentTransaction->fileBeingSent == nullptr)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
// See if we're already writing on this connection
|
|
NetworkTransaction *lastTransaction = cs->sendingTransaction;
|
|
if (lastTransaction != nullptr)
|
|
{
|
|
while (lastTransaction->nextWrite != nullptr)
|
|
{
|
|
lastTransaction = lastTransaction->nextWrite;
|
|
}
|
|
}
|
|
|
|
// Then check if this transaction is valid and safe to use
|
|
NetworkTransaction *transactionToUse;
|
|
if (lastTransaction != nullptr && sendingTransaction != lastTransaction && lastTransaction->fileBeingSent == nullptr)
|
|
{
|
|
transactionToUse = lastTransaction;
|
|
}
|
|
// We cannot use it, so try to allocate a free one
|
|
else
|
|
{
|
|
transactionToUse = freeTransactions;
|
|
if (transactionToUse == nullptr)
|
|
{
|
|
platform->Message(HOST_MESSAGE, "Network: Could not acquire free transaction!\n");
|
|
return false;
|
|
}
|
|
freeTransactions = transactionToUse->next;
|
|
transactionToUse->Set(nullptr, cs, dataReceiving); // set it to dataReceiving as we expect a response
|
|
}
|
|
|
|
// Replace the first entry of readyTransactions with our new transaction, so it can be used by Commit().
|
|
PrependTransaction(&readyTransactions, transactionToUse);
|
|
return true;
|
|
}
|
|
|
|
// Set the DHCP hostname. Removes all whitespaces and converts the name to lower-case.
|
|
void Network::SetHostname(const char *name)
|
|
{
|
|
size_t i = 0;
|
|
while (*name && i < ARRAY_UPB(hostname))
|
|
{
|
|
char c = *name++;
|
|
if (c >= 'A' && c <= 'Z')
|
|
{
|
|
c += 'a' - 'A';
|
|
}
|
|
|
|
if ((c >= 'a' && c <= 'z') || (c >= '0' && c <= '9') || (c == '-') || (c == '_'))
|
|
{
|
|
hostname[i++] = c;
|
|
}
|
|
}
|
|
|
|
if (i)
|
|
{
|
|
hostname[i] = 0;
|
|
}
|
|
else
|
|
{
|
|
strcpy(hostname, HOSTNAME);
|
|
}
|
|
}
|
|
|
|
// Initialise a ConnectionState for a new connection
|
|
void ConnectionState::Init(tcp_pcb *p)
|
|
{
|
|
pcb = p;
|
|
next = nullptr;
|
|
sendingTransaction = nullptr;
|
|
persistConnection = true;
|
|
}
|
|
|
|
// Get local port from a ConnectionState
|
|
uint16_t ConnectionState::GetLocalPort() const
|
|
{
|
|
return pcb->local_port;
|
|
}
|
|
|
|
// Get remote IP from a ConnectionState
|
|
uint32_t ConnectionState::GetRemoteIP() const
|
|
{
|
|
return pcb->remote_ip.addr;
|
|
}
|
|
|
|
// Get remote port from a ConnectionState
|
|
uint16_t ConnectionState::GetRemotePort() const
|
|
{
|
|
return pcb->remote_port;
|
|
}
|
|
|
|
// NetworkTransaction class members
|
|
|
|
void NetworkTransaction::Set(pbuf *p, ConnectionState *c, TransactionStatus s)
|
|
{
|
|
cs = c;
|
|
pb = p;
|
|
bufferLength = (p == nullptr) ? 0 : pb->tot_len;
|
|
status = s;
|
|
inputPointer = 0;
|
|
sendBuffer = nullptr;
|
|
fileBeingSent = nullptr;
|
|
closeRequested = false;
|
|
nextWrite = nullptr;
|
|
lastWriteTime = NAN;
|
|
waitingForDataConnection = false;
|
|
}
|
|
|
|
// How many incoming bytes do we have to process?
|
|
uint16_t NetworkTransaction::DataLength() const
|
|
{
|
|
return (pb == nullptr) ? 0 : pb->tot_len;
|
|
}
|
|
|
|
// Webserver calls this to read bytes that have come in from the network.
|
|
bool NetworkTransaction::Read(char& b)
|
|
{
|
|
if (LostConnection() || pb == nullptr)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (inputPointer == pb->len)
|
|
{
|
|
// See if there is another pbuf in the chain
|
|
if (inputPointer < pb->tot_len)
|
|
{
|
|
pb = pbuf_dechain(pb);
|
|
if (pb == nullptr)
|
|
{
|
|
return false;
|
|
}
|
|
inputPointer = 0;
|
|
}
|
|
else
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
b = ((const char*)pb->payload)[inputPointer++];
|
|
return true;
|
|
}
|
|
|
|
// Read an entire pbuf from the NetworkTransaction
|
|
bool NetworkTransaction::ReadBuffer(char *&buffer, unsigned int &len)
|
|
{
|
|
if (LostConnection() || pb == nullptr)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (inputPointer == pb->len)
|
|
{
|
|
// See if there is another pbuf in the chain
|
|
if (inputPointer < pb->tot_len)
|
|
{
|
|
pb = pbuf_dechain(pb);
|
|
if (pb == nullptr)
|
|
{
|
|
return false;
|
|
}
|
|
inputPointer = 0;
|
|
}
|
|
else
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
len = pb->len;
|
|
buffer = static_cast<char *>(pb->payload);
|
|
inputPointer += len;
|
|
|
|
return true;
|
|
}
|
|
|
|
// Webserver calls this to write bytes that need to go out to the network
|
|
|
|
void NetworkTransaction::Write(char b)
|
|
{
|
|
if (!LostConnection() && status != disconnected)
|
|
{
|
|
if (sendBuffer == nullptr && !reprap.AllocateOutput(sendBuffer))
|
|
{
|
|
return;
|
|
}
|
|
sendBuffer->cat(b);
|
|
}
|
|
}
|
|
|
|
// These functions attempt to store a whole string for sending.
|
|
// It may be necessary to split it up into multiple SendBuffers.
|
|
void NetworkTransaction::Write(const char* s)
|
|
{
|
|
if (!LostConnection() && status != disconnected)
|
|
{
|
|
if (sendBuffer == nullptr && !reprap.AllocateOutput(sendBuffer))
|
|
{
|
|
return;
|
|
}
|
|
sendBuffer->cat(s);
|
|
}
|
|
}
|
|
|
|
void NetworkTransaction::Write(StringRef ref)
|
|
{
|
|
Write(ref.Pointer(), ref.strlen());
|
|
}
|
|
|
|
void NetworkTransaction::Write(const char* s, size_t len)
|
|
{
|
|
if (!LostConnection() && status != disconnected)
|
|
{
|
|
if (sendBuffer == nullptr && !reprap.AllocateOutput(sendBuffer))
|
|
{
|
|
return;
|
|
}
|
|
sendBuffer->cat(s, len);
|
|
}
|
|
}
|
|
|
|
void NetworkTransaction::Write(OutputBuffer *buffer)
|
|
{
|
|
if (!LostConnection() && status != disconnected)
|
|
{
|
|
if (sendBuffer == nullptr)
|
|
{
|
|
sendBuffer = buffer;
|
|
}
|
|
else
|
|
{
|
|
sendBuffer->Append(buffer);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
while (buffer != nullptr)
|
|
{
|
|
buffer = reprap.ReleaseOutput(buffer);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Write formatted data to the output buffer
|
|
void NetworkTransaction::Printf(const char* fmt, ...)
|
|
{
|
|
if (LostConnection() || status == disconnected)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (sendBuffer == nullptr && !reprap.AllocateOutput(sendBuffer))
|
|
{
|
|
return;
|
|
}
|
|
|
|
va_list p;
|
|
va_start(p, fmt);
|
|
sendBuffer->vprintf(fmt, p);
|
|
va_end(p);
|
|
}
|
|
|
|
void NetworkTransaction::SetFileToWrite(FileStore *file)
|
|
{
|
|
fileBeingSent = file;
|
|
}
|
|
|
|
// Send exactly one TCP window of data or return true if we can free up this object
|
|
bool NetworkTransaction::Send()
|
|
{
|
|
// Free up this transaction if we either lost our connection or are supposed to close it now
|
|
|
|
if (LostConnection() || closeRequested)
|
|
{
|
|
if (fileBeingSent != nullptr)
|
|
{
|
|
fileBeingSent->Close();
|
|
fileBeingSent = nullptr;
|
|
}
|
|
|
|
while (sendBuffer != nullptr)
|
|
{
|
|
sendBuffer = reprap.ReleaseOutput(sendBuffer);
|
|
}
|
|
|
|
if (!LostConnection())
|
|
{
|
|
// debugPrintf("NetworkTransaction is closing connection cs=%08x\n", (unsigned int)cs);
|
|
reprap.GetNetwork()->ConnectionClosed(cs, true);
|
|
}
|
|
|
|
if (closingDataPort)
|
|
{
|
|
if (ftp_pasv_pcb != nullptr)
|
|
{
|
|
tcp_accept(ftp_pasv_pcb, nullptr);
|
|
tcp_close(ftp_pasv_pcb);
|
|
ftp_pasv_pcb = nullptr;
|
|
}
|
|
|
|
closingDataPort = false;
|
|
}
|
|
|
|
sendingTransaction = nullptr;
|
|
sentDataOutstanding = 0;
|
|
|
|
return true;
|
|
}
|
|
|
|
// We're still waiting for data to be ACK'ed, so check timeouts here
|
|
if (sentDataOutstanding)
|
|
{
|
|
if (!isnan(lastWriteTime))
|
|
{
|
|
float timeNow = reprap.GetPlatform()->Time();
|
|
if (timeNow - lastWriteTime > TCP_WRITE_TIMEOUT)
|
|
{
|
|
// reprap.GetPlatform()->Message(HOST_MESSAGE, "Network: Timing out connection cs=%08x\n", (unsigned int)cs);
|
|
tcp_abort(cs->pcb);
|
|
cs->pcb = nullptr;
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
sendingTransaction = nullptr;
|
|
}
|
|
|
|
// See if we can fill up the TCP window with some data chunks from our OutputBuffer instances
|
|
size_t bytesBeingSent = 0, bytesLeftToSend = TCP_WND;
|
|
while (sendBuffer != nullptr && bytesLeftToSend > 0)
|
|
{
|
|
size_t copyLength = min<size_t>(bytesLeftToSend, sendBuffer->BytesLeft());
|
|
memcpy(sendingWindow() + bytesBeingSent, sendBuffer->Read(copyLength), copyLength);
|
|
bytesBeingSent += copyLength;
|
|
bytesLeftToSend -= copyLength;
|
|
|
|
if (sendBuffer->BytesLeft() == 0)
|
|
{
|
|
sendBuffer = reprap.ReleaseOutput(sendBuffer);
|
|
}
|
|
}
|
|
|
|
// We also intend to send a file, so check if we can fill up the TCP window
|
|
if (sendBuffer == nullptr && bytesLeftToSend != 0 && fileBeingSent != nullptr)
|
|
{
|
|
// For HSMCI efficiency, read from the file in multiples of 4 bytes except at the end.
|
|
// This ensures that the second and subsequent chunks can be DMA'd directly into sendingWindow.
|
|
size_t bytesToRead = bytesLeftToSend & (~3);
|
|
if (bytesToRead != 0)
|
|
{
|
|
int bytesRead = fileBeingSent->Read(sendingWindow() + bytesBeingSent, bytesToRead);
|
|
if (bytesRead > 0)
|
|
{
|
|
bytesBeingSent += bytesRead;
|
|
}
|
|
|
|
if (bytesRead != (int)bytesToRead)
|
|
{
|
|
fileBeingSent->Close();
|
|
fileBeingSent = nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (bytesBeingSent == 0)
|
|
{
|
|
// If we have no data to send and fileBeingSent is nullptr, we can close the connection
|
|
if (!cs->persistConnection && nextWrite == nullptr)
|
|
{
|
|
Close();
|
|
return false;
|
|
}
|
|
|
|
// We want to send data from another transaction, so only free up this one
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
// The TCP window has been filled up as much as possible, so send it now. There is no need to check
|
|
// the available space in the SNDBUF queue, because we really write only one TCP window at once.
|
|
tcp_sent(cs->pcb, conn_sent);
|
|
err_t result = tcp_write(cs->pcb, sendingWindow(), bytesBeingSent, 0);
|
|
if (result != ERR_OK) // Final arg - 1 means make a copy
|
|
{
|
|
reprap.GetPlatform()->MessageF(HOST_MESSAGE, "Network: tcp_write returned error code %d, this should never happen!\n", result);
|
|
tcp_abort(cs->pcb);
|
|
cs->pcb = nullptr;
|
|
}
|
|
else
|
|
{
|
|
sendingTransaction = this;
|
|
sendingRetries = 0;
|
|
sendingWindowSize = sentDataOutstanding = bytesBeingSent;
|
|
|
|
lastWriteTime = reprap.GetPlatform()->Time();
|
|
|
|
tcp_output(cs->pcb);
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// This is called by the Webserer to send output data to a client. If keepConnectionAlive is set to false,
|
|
// the current connection is terminated once everything has been sent.
|
|
void NetworkTransaction::Commit(bool keepConnectionAlive)
|
|
{
|
|
// If this transaction is already in use for sending, just pretend it was complete
|
|
if (status == dataSending)
|
|
{
|
|
reprap.GetNetwork()->readyTransactions = next;
|
|
}
|
|
else
|
|
{
|
|
if (LostConnection())
|
|
{
|
|
Discard();
|
|
// debugPrintf("Conn lost before send\n");
|
|
}
|
|
else
|
|
{
|
|
// We're actually sending, so this transaction must be complete
|
|
reprap.GetNetwork()->readyTransactions = next;
|
|
FreePbuf();
|
|
cs->persistConnection = keepConnectionAlive;
|
|
status = dataSending;
|
|
|
|
// Enqueue this transaction, so it's sent in the right order
|
|
NetworkTransaction *mySendingTransaction = cs->sendingTransaction;
|
|
if (mySendingTransaction == nullptr)
|
|
{
|
|
cs->sendingTransaction = this;
|
|
NetworkTransaction * volatile * writingTransactions = &reprap.GetNetwork()->writingTransactions;
|
|
reprap.GetNetwork()->AppendTransaction(writingTransactions, this);
|
|
// debugPrintf("Transaction queued for writing to network, file=%c, data=%s\n", (f ? 'Y' : 'N'), r->outputBuffer);
|
|
}
|
|
else
|
|
{
|
|
while (mySendingTransaction->nextWrite != nullptr)
|
|
{
|
|
mySendingTransaction = mySendingTransaction->nextWrite;
|
|
}
|
|
mySendingTransaction->nextWrite = this;
|
|
// debugPrintf("Transaction appended to sending RS\n");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void NetworkTransaction::Defer()
|
|
{
|
|
// First free up the allocated pbufs
|
|
FreePbuf();
|
|
|
|
// Call LWIP task to process tcp_recved(). This will hopefully send an ACK
|
|
while (ethernet_read());
|
|
}
|
|
|
|
// This method should be called if we don't want to send data to the client and if
|
|
// we don't want to interfere with the connection state, i.e. keep it alive.
|
|
void NetworkTransaction::Discard()
|
|
{
|
|
// Is this the transaction we should be dealing with?
|
|
if (reprap.GetNetwork()->readyTransactions != this)
|
|
{
|
|
return;
|
|
}
|
|
reprap.GetNetwork()->readyTransactions = next;
|
|
|
|
// Free up some resources...
|
|
FreePbuf();
|
|
|
|
if (fileBeingSent != nullptr)
|
|
{
|
|
fileBeingSent->Close();
|
|
}
|
|
|
|
while (sendBuffer != nullptr)
|
|
{
|
|
sendBuffer = reprap.ReleaseOutput(sendBuffer);
|
|
}
|
|
|
|
// Free this transaction again unless it's still referenced
|
|
if (status != dataSending)
|
|
{
|
|
NetworkTransaction * volatile * freeTransactions = &reprap.GetNetwork()->freeTransactions;
|
|
reprap.GetNetwork()->AppendTransaction(freeTransactions, this);
|
|
}
|
|
|
|
// Call disconnect events if this transaction indicates a graceful disconnect
|
|
if (!LostConnection() && status == disconnected)
|
|
{
|
|
// debugPrintf("Network: CloseRequest is closing connection cs=%08x\n", (unsigned int)locCs);
|
|
reprap.GetNetwork()->ConnectionClosed(cs, true);
|
|
}
|
|
}
|
|
|
|
void NetworkTransaction::SetConnectionLost()
|
|
{
|
|
cs = nullptr;
|
|
FreePbuf();
|
|
for (NetworkTransaction *rs = nextWrite; rs != nullptr; rs = rs->nextWrite)
|
|
{
|
|
rs->cs = nullptr;
|
|
}
|
|
}
|
|
|
|
uint32_t NetworkTransaction::GetRemoteIP() const
|
|
{
|
|
return (cs != nullptr) ? cs->pcb->remote_ip.addr : 0;
|
|
}
|
|
|
|
uint16_t NetworkTransaction::GetRemotePort() const
|
|
{
|
|
return (cs != nullptr) ? cs->pcb->remote_port : 0;
|
|
}
|
|
|
|
uint16_t NetworkTransaction::GetLocalPort() const
|
|
{
|
|
return (cs != nullptr) ? cs->pcb->local_port : 0;
|
|
}
|
|
|
|
void NetworkTransaction::Close()
|
|
{
|
|
tcp_pcb *pcb = cs->pcb;
|
|
tcp_poll(pcb, nullptr, 4);
|
|
tcp_recv(pcb, nullptr);
|
|
closeRequested = true;
|
|
}
|
|
|
|
void NetworkTransaction::FreePbuf()
|
|
{
|
|
// Tell LWIP that we have processed data
|
|
if (cs != nullptr && bufferLength > 0 && cs->pcb != nullptr)
|
|
{
|
|
tcp_recved(cs->pcb, bufferLength);
|
|
bufferLength = 0;
|
|
}
|
|
|
|
// Free pbuf (pbufs are thread-safe)
|
|
if (pb != nullptr)
|
|
{
|
|
pbuf_free(pb);
|
|
pb = nullptr;
|
|
}
|
|
}
|
|
|
|
// vim: ts=4:sw=4
|