diff options
Diffstat (limited to 'nuttx/netutils/tftpc/tftpc_get.c')
-rw-r--r-- | nuttx/netutils/tftpc/tftpc_get.c | 328 |
1 files changed, 0 insertions, 328 deletions
diff --git a/nuttx/netutils/tftpc/tftpc_get.c b/nuttx/netutils/tftpc/tftpc_get.c deleted file mode 100644 index e0779d17d..000000000 --- a/nuttx/netutils/tftpc/tftpc_get.c +++ /dev/null @@ -1,328 +0,0 @@ -/**************************************************************************** - * netuils/tftp/tftpc_get.c - * - * Copyright (C) 2008-2009, 2011 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <spudmonkey@racsa.co.cr> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * 3. Neither the name NuttX nor the names of its contributors may be - * used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, TFTP_DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN - * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - ****************************************************************************/ - -/**************************************************************************** - * Included Files - ****************************************************************************/ - -#include <nuttx/config.h> - -#include <sys/types.h> -#include <sys/stat.h> -#include <stdint.h> -#include <stdbool.h> -#include <stdlib.h> -#include <unistd.h> -#include <fcntl.h> -#include <errno.h> -#include <debug.h> - -#include <net/uip/uipopt.h> -#include <net/uip/uip.h> -#include <apps/netutils/tftp.h> - -#include "tftpc_internal.h" - -#if defined(CONFIG_NET) && defined(CONFIG_NET_UDP) && CONFIG_NFILE_DESCRIPTORS > 0 - -/**************************************************************************** - * Pre-processor Definitions - ****************************************************************************/ - -#define TFTP_RETRIES 3 - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: tftp_write - ****************************************************************************/ - -static inline ssize_t tftp_write(int fd, const uint8_t *buf, size_t len) -{ - size_t left = len; - ssize_t nbyteswritten; - - while (left > 0) - { - /* Write the data... repeating the write in the event that it was - * interrupted by a signal. - */ - - do - { - nbyteswritten = write(fd, buf, left); - } - while (nbyteswritten < 0 && errno == EINTR); - - /* Check for non-EINTR errors */ - - if (nbyteswritten < 0) - { - ndbg("write failed: %d\n", errno); - return ERROR; - } - - /* Handle partial writes */ - - nvdbg("Wrote %d bytes to file\n", nbyteswritten); - left -= nbyteswritten; - buf += nbyteswritten; - } - return len; -} - -/**************************************************************************** - * Name: tftp_parsedatapacket - ****************************************************************************/ - -static inline int tftp_parsedatapacket(const uint8_t *packet, - uint16_t *opcode, uint16_t *blockno) -{ - *opcode = (uint16_t)packet[0] << 8 | (uint16_t)packet[1]; - if (*opcode == TFTP_DATA) - { - *blockno = (uint16_t)packet[2] << 8 | (uint16_t)packet[3]; - return OK; - } -#if defined(CONFIG_DEBUG) && defined(CONFIG_DEBUG_NET) - else if (*opcode == TFTP_ERR) - { - (void)tftp_parseerrpacket(packet); - } -#endif - return ERROR; -} - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: tftpget - * - * Input Parameters: - * remote - The name of the file on the TFTP server. - * local - Path to the location on a mounted filesystem where the file - * will be stored. - * addr - The IP address of the server in network order - * binary - TRUE: Perform binary ('octect') transfer - * FALSE: Perform text ('netascii') transfer - * - ****************************************************************************/ - -int tftpget(const char *remote, const char *local, in_addr_t addr, bool binary) -{ - struct sockaddr_in server; /* The address of the TFTP server */ - struct sockaddr_in from; /* The address the last UDP message recv'd from */ - uint8_t *packet; /* Allocated memory to hold one packet */ - uint16_t blockno = 0; /* The current transfer block number */ - uint16_t opcode; /* Received opcode */ - uint16_t rblockno; /* Received block number */ - int len; /* Generic length */ - int sd; /* Socket descriptor for socket I/O */ - int fd; /* File descriptor for file I/O */ - int retry; /* Retry counter */ - int nbytesrecvd = 0; /* The number of bytes received in the packet */ - int ndatabytes; /* The number of data bytes received */ - int result = ERROR; /* Assume failure */ - int ret; /* Generic return status */ - - /* Allocate the buffer to used for socket/disk I/O */ - - packet = (uint8_t*)zalloc(TFTP_IOBUFSIZE); - if (!packet) - { - ndbg("packet memory allocation failure\n"); - errno = ENOMEM; - goto errout; - } - - /* Open the file for writing */ - - fd = open(local, O_WRONLY|O_CREAT|O_TRUNC, 0666); - if (fd < 0) - { - ndbg("open failed: %d\n", errno); - goto errout_with_packet; - } - - /* Initialize a UDP socket and setup the server addresss */ - - sd = tftp_sockinit(&server, addr); - if (sd < 0) - { - goto errout_with_fd; - } - - /* Then enter the transfer loop. Loop until the entire file has - * been received or until an error occurs. - */ - - do - { - /* Increment the TFTP block number for the next transfer */ - - blockno++; - - /* Send the next block if the file within a loop. We will - * retry up to TFTP_RETRIES times before giving up on the - * transfer. - */ - - for (retry = 0; retry < TFTP_RETRIES; retry++) - { - /* Send the read request using the well-known port number before - * receiving the first block. Each retry of the first block will - * re-send the request. - */ - - if (blockno == 1) - { - len = tftp_mkreqpacket(packet, TFTP_RRQ, remote, binary); - server.sin_port = HTONS(CONFIG_NETUTILS_TFTP_PORT); - ret = tftp_sendto(sd, packet, len, &server); - if (ret != len) - { - goto errout_with_sd; - } - - /* Subsequent sendto will use the port number selected by the TFTP - * server in the DATA packet. Setting the server port to zero - * here indicates that we have not yet received the server port number. - */ - - server.sin_port = 0; - } - - /* Get the next packet from the server */ - - nbytesrecvd = tftp_recvfrom(sd, packet, TFTP_IOBUFSIZE, &from); - - /* Check if anything valid was received */ - - if (nbytesrecvd >= 0) - { - /* Verify the sender address and port number */ - - if (server.sin_addr.s_addr != from.sin_addr.s_addr) - { - nvdbg("Invalid address in DATA\n"); - retry--; - continue; - } - - if (server.sin_port && server.sin_port != from.sin_port) - { - nvdbg("Invalid port in DATA\n"); - len = tftp_mkerrpacket(packet, TFTP_ERR_UNKID, TFTP_ERRST_UNKID); - ret = tftp_sendto(sd, packet, len, &from); - retry--; - continue; - } - - /* Parse the incoming DATA packet */ - - if (nbytesrecvd < TFTP_DATAHEADERSIZE || - tftp_parsedatapacket(packet, &opcode, &rblockno) != OK || - blockno != rblockno) - { - nvdbg("Parse failure\n"); - if (opcode > TFTP_MAXRFC1350) - { - len = tftp_mkerrpacket(packet, TFTP_ERR_ILLEGALOP, TFTP_ERRST_ILLEGALOP); - ret = tftp_sendto(sd, packet, len, &from); - } - continue; - } - - /* Replace the server port to the one in the good data response */ - - if (!server.sin_port) - { - server.sin_port = from.sin_port; - } - - /* Then break out of the loop */ - - break; - } - } - - /* Did we exhaust all of the retries? */ - - if (retry == TFTP_RETRIES) - { - nvdbg("Retry limit exceeded\n"); - goto errout_with_sd; - } - - /* Write the received data chunk to the file */ - - ndatabytes = nbytesrecvd - TFTP_DATAHEADERSIZE; - tftp_dumpbuffer("Recvd DATA", packet + TFTP_DATAHEADERSIZE, ndatabytes); - if (tftp_write(fd, packet + TFTP_DATAHEADERSIZE, ndatabytes) < 0) - { - goto errout_with_sd; - } - - /* Send the acknowledgment */ - - len = tftp_mkackpacket(packet, blockno); - ret = tftp_sendto(sd, packet, len, &server); - if (ret != len) - { - goto errout_with_sd; - } - nvdbg("ACK blockno %d\n", blockno); - } - while (ndatabytes >= TFTP_DATASIZE); - - /* Return success */ - - result = OK; - -errout_with_sd: - close(sd); -errout_with_fd: - close(fd); -errout_with_packet: - free(packet); -errout: - return result; -} - -#endif /* CONFIG_NET && CONFIG_NET_UDP && CONFIG_NFILE_DESCRIPTORS > 0 */ |