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XProtocol.cc
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XProtocol.cc
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/******************************************************************************/
/* */
/* X P r o t o c o l . c c */
/* */
/* (c) 2016 by the Board of Trustees of the Leland Stanford, Jr., University */
/* Produced by Andrew Hanushevsky for Stanford University under contract */
/* DE-AC02-76-SFO0515 with the Department of Energy */
/* */
/* This file is part of the XRootD software suite. */
/* */
/* XRootD 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. */
/* */
/* The XRootD protocol definition, documented in this file, is distributed */
/* under a modified BSD license and may be freely used to reimplement it. */
/* Any references to "source" in this license refers to this file or any */
/* other file that specifically contains the following license. */
/* */
/* 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 of the copyright holder nor the names of its */
/* contributors may be used to endorse or promote products derived from */
/* this software without specific prior written permission. */
/* */
/* 4. Derived software may not use the name XRootD or cmsd (regardless of */
/* capitilization) in association with the derived work if the protocol */
/* documented in this file is changed in any way. */
/* */
/* 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 */
/* HOLDER 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. */
/******************************************************************************/
#include <inttypes.h>
#include <netinet/in.h>
#include <sys/types.h>
#include "XProtocol/XProtocol.hh"
/******************************************************************************/
/* G l o b a l s */
/******************************************************************************/
namespace
{
const char *errNames[kXR_ERRFENCE-kXR_ArgInvalid] =
{"Invalid argument", // kXR_ArgInvalid = 3000,
"Missing agument", // kXR_ArgMissing
"Argument is too long", // kXR_ArgTooLong
"File or object is locked", // kXR_FileLocked
"File or object not open", // kXR_FileNotOpen
"Filesystem error", // kXR_FSError
"Invalid request", // kXR_InvalidRequest
"I/O error", // kXR_IOError
"Insufficient memory", // kXR_NoMemory
"Insufficient space", // kXR_NoSpace
"Request not authorized", // kXR_NotAuthorized
"File or object not found", // kXR_NotFound
"Internal server error", // kXR_ServerError
"Unsupported request", // kXR_Unsupported
"No serves available", // kXR_noserver
"Target is not a file", // kXR_NotFile
"Target is a directory", // kXR_isDirectory
"Request cancelled", // kXR_Cancelled
"Checksum length error", // kXR_ChkLenErr
"Checksum is invalid", // kXR_ChkSumErr
"Request in progress", // kXR_inProgress
"Quota exceeded", // kXR_overQuota
"Invalid signature", // kXR_SigVerErr
"Decryption failed", // kXR_DecryptErr
"Overloaded", // kXR_Overloaded
"Invalid payload format" // kXR_BadPayload
};
const char *reqNames[kXR_REQFENCE-kXR_auth] =
{"auth", "query", "chmod", "close",
"dirlist", "getfile", "protocol", "login",
"mkdir", "mv", "open", "ping",
"putfile", "read", "rm", "rmdir",
"sync", "stat", "set", "write",
"admin", "prepare", "statx", "endsess",
"bind", "readv", "verifyw", "locate",
"truncate", "sigver", "decrypt", "writev",
"fattr"
};
// Following value is used to determine if the error or request code is
// host byte or network byte order making use of the fact each starts at 3000
//
union Endianness {kXR_unt16 xyz; unsigned char Endian[2];} little = {1};
}
/******************************************************************************/
/* e r r N a m e */
/******************************************************************************/
const char *XProtocol::errName(kXR_int32 errCode)
{
// Mangle request code if the byte orderdoesn't match our host order
//
if ((errCode < 0 || errCode > kXR_ERRFENCE) && little.Endian[0])
errCode = ntohl(errCode);
// Validate the request code
//
if (errCode < kXR_ArgInvalid || errCode >= kXR_ERRFENCE)
return "!undefined error";
// Return the proper table
//
return errNames[errCode - kXR_ArgInvalid];
}
/******************************************************************************/
/* r e q N a m e */
/******************************************************************************/
const char *XProtocol::reqName(kXR_unt16 reqCode)
{
// Mangle request code if the byte orderdoesn't match our host order
//
if (reqCode > kXR_REQFENCE && little.Endian[0]) reqCode = ntohs(reqCode);
// Validate the request code
//
if (reqCode < kXR_auth || reqCode >= kXR_REQFENCE) return "!unknown";
// Return the proper table
//
return reqNames[reqCode - kXR_auth];
}