/**************************************************************************** * netutils/tftoc/tftpc_internal.h * * Copyright (C) 2008-2009 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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, 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. * ****************************************************************************/ #ifndef __NETUTILS_TFTP_TFTPC_INTERNAL_H #define __NETUTILS_TFTP_TFTPC_INTERNAL_H /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include #include #include #include /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /* Verify TFTP configuration settings ***************************************/ /* The settings beginning with CONFIG_NETUTILS_TFTP_* can all be set in the * NuttX configuration file. If they are are defined in the configuration * then default values are assigned here. */ /* The "well-known" server TFTP port number (usually 69). This port number * is only used for the initial server contact. The server will negotiate * a new transfer port number after the initial client request. */ #ifndef CONFIG_NETUTILS_TFTP_PORT # define CONFIG_NETUTILS_TFTP_PORT 69 #endif /* recvfrom timeout in deci-seconds */ #ifndef CONFIG_NETUTILS_TFTP_TIMEOUT # define CONFIG_NETUTILS_TFTP_TIMEOUT 10 /* One second */ #endif /* Dump received buffers */ #undef CONFIG_NETUTILS_TFTP_DUMPBUFFERS /* Sizes of TFTP message headers */ #define TFTP_ACKHEADERSIZE 4 #define TFTP_ERRHEADERSIZE 4 #define TFTP_DATAHEADERSIZE 4 /* The maximum size for TFTP data is determined by the configured UDP packet * payload size (UDP_MSS), but cannot exceed 512 + sizeof(TFTP_DATA header). * * In the case where there are multiple network devices with different * link layer protocols, each network device may support a different UDP MSS * value. Here, if Ethernet is enabled, we (arbitrarily) assume that the * Ethernet is link that will be used. If Ethernet is not one of the * enabled interfaces, we (arbitrarily) select the minimum MSS. */ #define TFTP_DATAHEADERSIZE 4 #define TFTP_MAXPACKETSIZE (TFTP_DATAHEADERSIZE+512) #if defined(CONFIG_NET_ETHERNET) # if ETH_UDP_MSS(IPv4_HDRLEN) < TFTP_MAXPACKETSIZE # define TFTP_PACKETSIZE ETH_UDP_MSS(IPv4_HDRLEN) # ifdef CONFIG_CPP_HAVE_WARNING # warning "Ethernet MSS is too small for TFTP" # endif # else # define TFTP_PACKETSIZE TFTP_MAXPACKETSIZE # endif #elif MIN_UDP_MSS < TFTP_MAXPACKETSIZE # define TFTP_PACKETSIZE MIN_UDP_MSS # ifdef CONFIG_CPP_HAVE_WARNING # warning "Minimum MSS is too small for TFTP" # endif #else # define TFTP_PACKETSIZE TFTP_MAXPACKETSIZE #endif #define TFTP_DATASIZE (TFTP_PACKETSIZE-TFTP_DATAHEADERSIZE) #define TFTP_IOBUFSIZE (TFTP_PACKETSIZE+8) /* TFTP Opcodes *************************************************************/ #define TFTP_RRQ 1 /* Read Request RFC 1350, RFC 2090 */ #define TFTP_WRQ 2 /* Write Request RFC 1350 */ #define TFTP_DATA 3 /* Data chunk RFC 1350 */ #define TFTP_ACK 4 /* Acknowledgement RFC 1350 */ #define TFTP_ERR 5 /* Error Message RFC 1350 */ #define TFTP_OACK 6 /* Option acknowledgment RFC 2347 */ #define TFTP_MAXRFC1350 5 /* TFTP Error Codes *********************************************************/ /* Error codes */ #define TFTP_ERR_NONE 0 /* No error */ #define TFTP_ERR_NOSUCHFILE 1 /* File not found */ #define TFTP_ERR_ACCESS 2 /* Access violation */ #define TFTP_ERR_FULL 3 /* Disk full or allocation exceeded */ #define TFTP_ERR_ILLEGALOP 4 /* Illegal TFTP operation */ #define TFTP_ERR_UNKID 5 /* Unknown transfer ID */ #define TFTP_ERR_EXISTS 6 /* File already exists */ #define TFTP_ERR_UNKUSER 7 /* No such user */ #define TFTP_ERR_NEGOTIATE 8 /* Terminate transfer due to option negotiation */ /* Error strings */ #define TFTP_ERR_STNOSUCHFILE "File not found" #define TFTP_ERRST_ACCESS "Access violation" #define TFTP_ERRST_FULL "Disk full or allocation exceeded" #define TFTP_ERRST_ILLEGALOP "Illegal TFTP operation" #define TFTP_ERRST_UNKID "Unknown transfer ID" #define TFTP_ERRST_EXISTS "File already exists" #define TFTP_ERRST_UNKUSER "No such user" #define TFTP_ERRST_NEGOTIATE "Terminate transfer due to option negotiation" /**************************************************************************** * Public Type Definitions ****************************************************************************/ /**************************************************************************** * Public Data ****************************************************************************/ /**************************************************************************** * Public Function Prototypes ****************************************************************************/ /* Defined in tftp_packet.c *************************************************/ extern int tftp_sockinit(struct sockaddr_in *server, in_addr_t addr); extern int tftp_mkreqpacket(uint8_t *buffer, int opcode, const char *path, bool binary); extern int tftp_mkackpacket(uint8_t *buffer, uint16_t blockno); extern int tftp_mkerrpacket(uint8_t *buffer, uint16_t errorcode, const char *errormsg); #ifdef CONFIG_DEBUG_NET_WARN extern int tftp_parseerrpacket(const uint8_t *packet); #endif extern ssize_t tftp_recvfrom(int sd, void *buf, size_t len, struct sockaddr_in *from); extern ssize_t tftp_sendto(int sd, const void *buf, size_t len, struct sockaddr_in *to); #ifdef CONFIG_NETUTILS_TFTP_DUMPBUFFERS # define tftp_dumpbuffer(msg, buffer, nbytes) ninfodumpbuffer(msg, buffer, nbytes) #else # define tftp_dumpbuffer(msg, buffer, nbytes) #endif #endif /* __NETUTILS_TFTP_TFTPC_INTERNAL_H */