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XrdXrootdConfig.cc
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XrdXrootdConfig.cc
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/******************************************************************************/
/* */
/* X r d X r o o t d C o n f i g . c c */
/* */
/* (c) 2010 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 Deprtment 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. */
/* */
/* XRootD 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 XRootD in a file called COPYING.LESSER (LGPL license) and file */
/* COPYING (GPL license). If not, see <http://www.gnu.org/licenses/>. */
/* */
/* The copyright holder's institutional names and contributor's names may not */
/* be used to endorse or promote products derived from this software without */
/* specific prior written permission of the institution or contributor. */
/******************************************************************************/
#include <unistd.h>
#include <cctype>
#include <fcntl.h>
#include <string>
#include <cstring>
#include <cstdio>
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <vector>
#ifdef __solaris__
#include <sys/isa_defs.h>
#endif
#include "XrdVersion.hh"
#include "XProtocol/XProtocol.hh"
#include "XrdSfs/XrdSfsFlags.hh"
#include "XrdSfs/XrdSfsInterface.hh"
#include "XrdNet/XrdNetOpts.hh"
#include "XrdNet/XrdNetPMarkCfg.hh"
#include "XrdNet/XrdNetSocket.hh"
#include "XrdOuc/XrdOuca2x.hh"
#include "XrdOuc/XrdOucEnv.hh"
#include "XrdOuc/XrdOucProg.hh"
#include "XrdOuc/XrdOucReqID.hh"
#include "XrdOuc/XrdOucString.hh"
#include "XrdOuc/XrdOucStream.hh"
#include "XrdOuc/XrdOucUtils.hh"
#include "XrdSec/XrdSecLoadSecurity.hh"
#include "XrdSys/XrdSysError.hh"
#include "XrdSys/XrdSysHeaders.hh"
#include "XrdSys/XrdSysLogger.hh"
#include "XrdTls/XrdTlsContext.hh"
#include "XrdXrootd/XrdXrootdAdmin.hh"
#include "XrdXrootd/XrdXrootdCallBack.hh"
#include "XrdXrootd/XrdXrootdFile.hh"
#include "XrdXrootd/XrdXrootdFileLock.hh"
#include "XrdXrootd/XrdXrootdFileLock1.hh"
#include "XrdXrootd/XrdXrootdJob.hh"
#include "XrdXrootd/XrdXrootdPrepare.hh"
#include "XrdXrootd/XrdXrootdProtocol.hh"
#include "XrdXrootd/XrdXrootdStats.hh"
#include "XrdXrootd/XrdXrootdTrace.hh"
#include "XrdXrootd/XrdXrootdTransit.hh"
#include "XrdXrootd/XrdXrootdXPath.hh"
#include "Xrd/XrdBuffer.hh"
#include "Xrd/XrdInet.hh"
#include "Xrd/XrdLink.hh"
/******************************************************************************/
/* P r o t o c o l C o m m a n d L i n e O p t i o n s */
/******************************************************************************/
/* This is the XRootd server. The syntax is:
xrootd [options]
options: [<xopt>] [-r] [-t] [-y] [path]
Where:
xopt are xrd specified options that are screened out.
-r This is a redirecting server.
-t This server is a redirection target.
-y This server is a proxy server.
path Export path. Any number of paths may be specified.
By default, only '/tmp' is exported.
*/
/******************************************************************************/
/* G l o b a l s */
/******************************************************************************/
XrdOucString *XrdXrootdCF;
extern XrdSysTrace XrdXrootdTrace;
XrdXrootdPrepare *XrdXrootdPrepQ;
const char *XrdXrootdInstance;
int XrdXrootdPort;
extern XrdSfsFileSystem *XrdXrootdloadFileSystem(XrdSysError *,
XrdSfsFileSystem *,
const char *,
const char *, XrdOucEnv *);
extern XrdSfsFileSystem *XrdSfsGetDefaultFileSystem
(XrdSfsFileSystem *nativeFS,
XrdSysLogger *Logger,
const char *configFn,
XrdOucEnv *EnvInfo);
/******************************************************************************/
/* G l o b a l S t a t i c s */
/******************************************************************************/
namespace XrdXrootd
{
extern XrdBuffManager *BPool;
extern XrdScheduler *Sched;
extern XrdXrootdStats *SI;
}
/******************************************************************************/
/* L o c a l S t a t i c s */
/******************************************************************************/
namespace
{
char *digParm = 0;
char *FSLib[2] = {0,0};
std::vector<std::string> FSLPath;
char *gpfLib = 0;// Normally zero for default
char *gpfParm = 0;
char *SecLib;
int tlsCache= XrdTlsContext::scNone;
int asyncFlags = 0;
static const int asDebug = 0x01;
static const int asNoCache = 0x02;
}
/******************************************************************************/
/* C o n f i g u r e */
/******************************************************************************/
int XrdXrootdProtocol::Configure(char *parms, XrdProtocol_Config *pi)
{
/*
Function: Establish configuration at load time.
Input: None.
Output: 0 upon success or !0 otherwise.
*/
extern XrdSfsFileSystem *XrdDigGetFS
(XrdSfsFileSystem *nativeFS,
XrdSysLogger *Logger,
const char *configFn,
const char *theParms);
XrdOucEnv xrootdEnv;
XrdXrootdXPath *xp;
char *adminp, *rdf, *bP, *tmp, buff[1024];
int i, n;
// Copy out the special info we want to use at top level
//
eDest.logger(pi->eDest->logger());
XrdXrootdTrace.SetLogger(pi->eDest->logger());
SI = new XrdXrootdStats(pi->Stats);
XrdXrootd::SI= SI;
Sched = pi->Sched; XrdXrootd::Sched = pi->Sched;
BPool = pi->BPool; XrdXrootd::BPool = pi->BPool;
hailWait = pi->hailWait;
readWait = pi->readWait;
Port = pi->Port;
myInst = pi->myInst;
Window = pi->WSize;
tlsPort = pi->tlsPort;
tlsCtx = pi->tlsCtx;
XrdXrootdCF = pi->totalCF;
// Record globally accessible values
//
XrdXrootdInstance = pi->myInst;
XrdXrootdPort = pi->Port;
// Set the callback object static areas now!
//
XrdXrootdCallBack::setVals(&eDest, SI, Sched, Port);
// Pick up exported paths from the command line
//
for (i = 1; i < pi->argc; i++) xexpdo(pi->argv[i]);
// Pre-initialize some i/o values. Note that we now set maximum readv element
// transfer size to the buffer size (before it was a reasonable 256K).
//
n = (pi->theEnv ? pi->theEnv->GetInt("MaxBuffSize") : 0);
maxTransz = maxBuffsz = (n ? n : BPool->MaxSize());
memset(Route, 0, sizeof(Route));
// Now process and configuration parameters
//
rdf = (parms && *parms ? parms : pi->ConfigFN);
if (rdf && Config(rdf)) return 0;
if (pi->DebugON) XrdXrootdTrace.What = TRACE_ALL;
// Initialize the packet marking framework if configured. We do that here as
// nothing else following this code can fail but we can so be consistent.
//
bool bad = false;
PMark = XrdNetPMarkCfg::Config(&eDest, pi->Sched, &XrdXrootdTrace, bad);
if (PMark)
{if (pi->theEnv) pi->theEnv->PutPtr("XrdNetPMark*", PMark);
xrootdEnv.PutPtr("XrdNetPMark*", PMark);
}
else if (bad) return 0;
// Check if we are exporting a generic object name
//
if (XPList.Opts() & XROOTDXP_NOSLASH)
{eDest.Say("Config exporting ", XPList.Path(n)); n += 2;}
else n = 0;
// Check if we are exporting anything
//
if (!(xp = XPList.Next()) && !n)
{XPList.Insert("/tmp"); n = 8;
eDest.Say("Config warning: only '/tmp' will be exported.");
} else {
while(xp) {eDest.Say("Config exporting ", xp->Path(i));
n += i+2; xp = xp->Next();
}
}
// Export the exports
//
bP = tmp = (char *)malloc(n);
if (XPList.Opts() & XROOTDXP_NOSLASH)
{strcpy(bP, XPList.Path(i)); bP += i, *bP++ = ' ';}
xp = XPList.Next();
while(xp) {strcpy(bP, xp->Path(i)); bP += i; *bP++ = ' '; xp = xp->Next();}
*(bP-1) = '\0';
XrdOucEnv::Export("XRDEXPORTS", tmp); free(tmp);
// Initialize the security system if this is wanted
//
if (!ConfigSecurity(xrootdEnv, pi->ConfigFN)) return 0;
// Set up the network for self-identification and display it
//
pi->NetTCP->netIF.Port(Port);
pi->NetTCP->netIF.Display("Config ");
// Establish our specific environment that will be passed along
//
xrootdEnv.PutPtr("XrdInet*", (void *)(pi->NetTCP));
xrootdEnv.PutPtr("XrdNetIF*", (void *)(&(pi->NetTCP->netIF)));
xrootdEnv.PutPtr("XrdScheduler*", Sched);
// Copy over the xrd environment which contains plugin argv's
//
if (pi->theEnv) xrootdEnv.PutPtr("xrdEnv*", pi->theEnv);
// Initialize monitoring (it won't do anything if it wasn't enabled). This
// needs to be done before we load any plugins as plugins may need monitoring.
//
if (!ConfigMon(pi, xrootdEnv)) return 0;
// Get the filesystem to be used and its features.
//
if (!ConfigFS(xrootdEnv, pi->ConfigFN)) return 0;
fsFeatures = osFS->Features();
isProxy = (fsFeatures & XrdSfs::hasPRXY) != 0;
if (pi->theEnv) pi->theEnv->PutPtr("XrdSfsFileSystem*", osFS);
// Check if the file system includes a custom prepare handler as this will
// affect how we handle prepare requests.
//
if (fsFeatures & XrdSfs::hasPRP2 || xrootdEnv.Get("XRD_PrepHandler"))
PrepareAlt = true;
// Check if the diglib should be loaded. We only support the builtin one. In
// the future we will have to change this code to be like the above.
//
if (digParm)
{TRACE(DEBUG, "Loading dig filesystem builtin");
digFS = XrdDigGetFS(osFS, eDest.logger(), pi->ConfigFN, digParm);
if (!digFS) eDest.Emsg("Config","Unable to load digFS; "
"remote debugging disabled!");
}
// Check if we are going to be processing checksums locally
//
if (JobCKT && JobLCL)
{XrdOucErrInfo myError("Config");
XrdOucTList *tP = JobCKTLST;
do {if (osFS->chksum(XrdSfsFileSystem::csSize,tP->text,0,myError))
{eDest.Emsg("Config",tP->text,"checksum is not natively supported.");
return 0;
}
tP->ival[1] = myError.getErrInfo();
tP = tP->next;
} while(tP);
}
// Initialiaze for AIO. If we are not in debug mode and aio is enabled then we
// turn off async I/O if tghe filesystem requests it or if this is a caching
// proxy and we were asked not to use aio in such a cacse.
//
if (!(asyncFlags & asDebug) && as_aioOK)
{if (fsFeatures & XrdSfs::hasNAIO) as_aioOK = 0;
else if (asyncFlags & asNoCache && fsFeatures & XrdSfs::hasCACH)
as_aioOK = 0;
if (!as_aioOK) eDest.Say("Config asynchronous I/O has been disabled!");
}
// Compute the maximum stutter allowed during async I/O (one per 64k)
//
if (as_segsize > 65536) as_okstutter = as_segsize/65536;
// Establish final sendfile processing mode. This may be turned off by the
// link or by the SFS plugin usually because it's a proxy.
//
const char *why = 0;
if (!as_nosf)
{if (fsFeatures & XrdSfs::hasNOSF) why = "file system plugin.";
else if (!XrdLink::sfOK) why = "OS kernel.";
if (why)
{as_nosf = true;
eDest.Say("Config sendfile has been disabled by ", why);
}
}
// Create the file lock manager and initialize file handling
//
Locker = (XrdXrootdFileLock *)new XrdXrootdFileLock1();
XrdXrootdFile::Init(Locker, &eDest, !as_nosf);
// Schedule protocol object cleanup (also advise the transit protocol)
//
ProtStack.Set(pi->Sched, &XrdXrootdTrace, TRACE_MEM);
n = (pi->ConnMax/3 ? pi->ConnMax/3 : 30);
ProtStack.Set(n, 60*60);
XrdXrootdTransit::Init(pi->Sched, n, 60*60);
// Initialize the request ID generation object
//
PrepID = new XrdOucReqID(pi->urAddr, (int)Port);
// Initialize for prepare processing
//
XrdXrootdPrepQ = new XrdXrootdPrepare(&eDest, pi->Sched, PrepareAlt);
sprintf(buff, "%%s://%s:%d/&L=%%d&U=%%s", pi->myName, pi->Port);
Notify = strdup(buff);
// Set the redirect flag if we are a pure redirector
//
int tlsFlags = myRole & kXR_tlsAny;
myRole = kXR_isServer; myRolf = kXR_DataServer;
if ((rdf = getenv("XRDREDIRECT"))
&& (!strcmp(rdf, "R") || !strcmp(rdf, "M")))
{isRedir = *rdf;
myRole = kXR_isManager; myRolf = kXR_LBalServer;
if (!strcmp(rdf, "M")) myRole |=kXR_attrMeta;
}
if (fsFeatures & XrdSfs::hasPRXY) myRole |= kXR_attrProxy;
myRole |= tlsFlags;
// Turn off client redirects if we are neither a redirector nor a proxy server
//
if (CL_Redir && !isRedir && !isProxy)
{CL_Redir = false;
eDest.Say("Config warning: 'redirect client' ignored; "
"not a redirector nor a proxy server");
}
// Check if we are redirecting anything
//
if ((xp = RPList.Next()))
{int k;
char buff[2048], puff[1024];
do {k = xp->Opts();
if (Route[k].Host[0] == Route[k].Host[1]
&& Route[k].Port[0] == Route[k].Port[1]) *puff = 0;
else sprintf(puff, "%%%s:%d", Route[k].Host[1], Route[k].Port[1]);
sprintf(buff," to %s:%d%s",Route[k].Host[0],Route[k].Port[0],puff);
eDest.Say("Config redirect static ", xp->Path(), buff);
xp = xp->Next();
} while(xp);
}
if ((xp = RQList.Next()))
{int k;
const char *cgi1, *cgi2;
char buff[2048], puff[1024], xCgi[RD_Num] = {0};
if (isRedir) {cgi1 = "+"; cgi2 = getenv("XRDCMSCLUSTERID");}
else {cgi1 = ""; cgi2 = pi->myName;}
myCNlen = snprintf(buff, sizeof(buff), "%s%s", cgi1, cgi2);
myCName = strdup(buff);
do {k = xp->Opts();
if (Route[k].Host[0] == Route[k].Host[1]
&& Route[k].Port[0] == Route[k].Port[1]) *puff = 0;
else sprintf(puff, "%%%s:%d", Route[k].Host[1], Route[k].Port[1]);
sprintf(buff," to %s:%d%s",Route[k].Host[0],Route[k].Port[0],puff);
eDest.Say("Config redirect enoent ", xp->Path(), buff);
if (!xCgi[k] && cgi2)
{bool isdup = Route[k].Host[0] == Route[k].Host[1]
&& Route[k].Port[0] == Route[k].Port[1];
for (i = 0; i < 2; i++)
{n = snprintf(buff,sizeof(buff), "%s?tried=%s%s",
Route[k].Host[i], cgi1, cgi2);
free(Route[k].Host[i]); Route[k].Host[i] = strdup(buff);
Route[k].RDSz[i] = n;
if (isdup) {Route[k].Host[1] = Route[k].Host[0];
Route[k].RDSz[1] = n; break;
}
}
}
xCgi[k] = 1;
xp = xp->Next();
} while(xp);
}
// Add all jobs that we can run to the admin object
//
if (JobCKS) XrdXrootdAdmin::addJob("chksum", JobCKS);
// Establish the path to be used for admin functions. We will loose this
// storage upon an error but we don't care because we'll just exit.
//
adminp = XrdOucUtils::genPath(pi->AdmPath, 0, ".xrootd");
// Setup the admin path (used in all roles).
//
if (!(AdminSock = XrdNetSocket::Create(&eDest, adminp, "admin", pi->AdmMode))
|| !XrdXrootdAdmin::Init(&eDest, AdminSock)) return 0;
// Indicate whether or not we support extended attributes
//
{XrdOucEnv myEnv;
XrdOucErrInfo eInfo("", &myEnv);
char buff[128];
if (osFS->FAttr(0, eInfo, 0) == SFS_OK)
{usxMaxNsz = myEnv.GetInt("usxMaxNsz");
if (usxMaxNsz < 0) usxMaxNsz = 0;
usxMaxVsz = myEnv.GetInt("usxMaxVsz");
if (usxMaxVsz < 0) usxMaxVsz = 0;
snprintf(buff, sizeof(buff), "%d %d", usxMaxNsz, usxMaxVsz);
usxParms = strdup(buff);
} else {
usxMaxNsz = 0;
usxMaxVsz = 0;
usxParms = strdup("0 0");
}
}
// Finally, check if we really need to be in bypass mode if it is set
//
if (OD_Bypass)
{const char *penv = getenv("XRDXROOTD_PROXY");
if (!penv || *penv != '=')
{OD_Bypass = false;
eDest.Say("Config warning: 'fsoverload bypass' ignored; "
"not a forwarding proxy.");
}
}
// Add any additional features
//
if (fsFeatures & XrdSfs::hasPOSC) myRole |= kXR_supposc;
if (fsFeatures & XrdSfs::hasPGRW) myRole |= kXR_suppgrw;
if (fsFeatures & XrdSfs::hasGPF) myRole |= kXR_supgpf;
if (fsFeatures & XrdSfs::hasGPFA && myRole & kXR_supgpf)
myRole |= kXR_anongpf;
// Finally note whether or not we have TLS enabled
//
if (tlsCtx) myRole |= kXR_haveTLS;
// Return success
//
free(adminp);
return 1;
}
/******************************************************************************/
/* C o n f i g */
/******************************************************************************/
#define TS_Xeq(x,m) (!strcmp(x,var)) GoNo = m(Config)
#define TS_Zeq(x,m) (!strcmp(x,var)) GoNo = m(&eDest, Config)
int XrdXrootdProtocol::Config(const char *ConfigFN)
{
XrdOucEnv myEnv;
XrdOucStream Config(&eDest, getenv("XRDINSTANCE"), &myEnv, "=====> ");
char *var;
int cfgFD, GoNo, NoGo = 0, ismine;
// Open and attach the config file
//
if ((cfgFD = open(ConfigFN, O_RDONLY, 0)) < 0)
return eDest.Emsg("Config", errno, "open config file", ConfigFN);
Config.Attach(cfgFD);
// Indicate what we are about to do in the capture stream
//
static const char *cvec[] = { "*** xroot protocol config:", 0 };
Config.Capture(cvec);
// Process items
//
while((var = Config.GetMyFirstWord()))
{ if ((ismine = !strncmp("xrootd.", var, 7)) && var[7]) var += 7;
else if ((ismine = !strcmp("all.export", var))) var += 4;
else if ((ismine = !strcmp("all.seclib", var))) var += 4;
if (ismine)
{ if TS_Xeq("async", xasync);
else if TS_Xeq("bindif", xbif);
else if TS_Xeq("chksum", xcksum);
else if TS_Xeq("diglib", xdig);
else if TS_Xeq("export", xexp);
else if TS_Xeq("fslib", xfsl);
else if TS_Xeq("fsoverload", xfso);
else if TS_Xeq("gpflib", xgpf);
else if TS_Xeq("log", xlog);
else if TS_Xeq("mongstream", xmongs);
else if TS_Xeq("monitor", xmon);
else if TS_Zeq("pmark", XrdNetPMarkCfg::Parse);
else if TS_Xeq("prep", xprep);
else if TS_Xeq("redirect", xred);
else if TS_Xeq("seclib", xsecl);
else if TS_Xeq("tls", xtls);
else if TS_Xeq("tlsreuse", xtlsr);
else if TS_Xeq("trace", xtrace);
else if TS_Xeq("limit", xlimit);
else {if (!strcmp(var, "pidpath"))
{eDest.Say("Config warning: 'xrootd.pidpath' no longer "
"supported; use 'all.pidpath'.");
} else {
eDest.Say("Config warning: ignoring unknown "
"directive '", var, "'.");
}
Config.Echo(false);
continue;
}
if (GoNo) {Config.Echo(); NoGo = 1;}
}
}
// We now have to generate the correct TLS context if one was specified. Our
// context must be of the non-verified kind as we don't accept certs.
//
if (!NoGo && tlsCtx)
{tlsCtx = tlsCtx->Clone(false);
if (!tlsCtx)
{eDest.Say("Config failure: unable to setup TLS for protocol!");
NoGo = 1;
} else {
static const char *sessID = "xroots";
tlsCtx->SessionCache(tlsCache, sessID, 6);
}
}
// Add our config to our environment and return
//
return NoGo;
}
/******************************************************************************/
/* P r i v a t e F u n c t i o n s */
/******************************************************************************/
/******************************************************************************/
/* C h e c k T L S */
/******************************************************************************/
int XrdXrootdProtocol::CheckTLS(const char *tlsProt)
{
// If login specified, turn off session as it doesn't make sense together.
//
if (myRole & kXR_tlsLogin) myRole &= ~kXR_tlsSess;
if (tlsCap & Req_TLSLogin) tlsCap &= ~Req_TLSSess;
if (tlsNot & Req_TLSLogin) tlsNot &= ~Req_TLSSess;
// Turn off TPC TLS requirement if login or session is required to have TLS
// However, that flag must remain to be set in the protocol response.
//
if (tlsCap & (Req_TLSLogin|Req_TLSSess)) tlsCap &= ~Req_TLSTPC;
if (tlsNot & (Req_TLSLogin|Req_TLSSess)) tlsNot &= ~Req_TLSTPC;
// If some authnetication protocols need TLS then we must requie that login
// uses TLS. For incapable clients, we leave this alone as we will skip
// TLS authnetication based protocols should the login phase not have TLS.
//
if (tlsProt && !(tlsCap & Req_TLSLogin))
{eDest.Say("Config Authentication protocol(s)", tlsProt,
" require TLS; login now requires TLS.");
myRole |= kXR_tlsLogin;
tlsCap |= Req_TLSLogin;
}
// If there are any TLS requirements then TLS must have been configured.
//
if (myRole & kXR_tlsAny && !tlsCtx)
{eDest.Say("Config failure: unable to honor TLS requirement; "
"TLS not configured!");
return 0;
}
// All done
//
return 1;
}
/******************************************************************************/
/* C o n f i g F S */
/******************************************************************************/
bool XrdXrootdProtocol::ConfigFS(XrdOucEnv &xEnv, const char *cfn)
{
const char *fsLoc;
int n;
// Get the filesystem to be used
//
if (FSLib[0])
{TRACE(DEBUG, "Loading base filesystem library " <<FSLib[0]);
osFS = XrdXrootdloadFileSystem(&eDest, 0, FSLib[0], cfn, &xEnv);
fsLoc = FSLib[0];
} else {
osFS = XrdSfsGetDefaultFileSystem(0, eDest.logger(), cfn, &xEnv);
fsLoc = "default";
}
// Make sure we have loaded something
//
if (!osFS)
{eDest.Emsg("Config", "Unable to load base file system using", fsLoc);
return false;
}
if (FSLib[0]) osFS->EnvInfo(&xEnv);
// If there is an old style wrapper, load it now.
//
if (FSLib[1] && !ConfigFS(FSLib[1], xEnv, cfn)) return false;
// Run through any other pushdowns
//
if ((n = FSLPath.size()))
for (int i = 0; i < n; i++)
{if (!ConfigFS(FSLPath[i].c_str(), xEnv, cfn)) return false;}
// Inform the statistics object which filesystem to use
//
SI->setFS(osFS);
// All done here
//
return true;
}
/******************************************************************************/
bool XrdXrootdProtocol::ConfigFS(const char *path, XrdOucEnv &xEnv,
const char *cfn)
{
// Try to load this wrapper library
//
TRACE(DEBUG, "Loading wrapper filesystem library " <<path);
osFS = XrdXrootdloadFileSystem(&eDest, osFS, path, cfn, &xEnv);
if (!osFS)
{eDest.Emsg("Config", "Unable to load file system wrapper from", path);
return false;
}
osFS->EnvInfo(&xEnv);
return true;
}
/******************************************************************************/
/* C o n f i g S e c u r i t y */
/******************************************************************************/
int XrdXrootdProtocol::ConfigSecurity(XrdOucEnv &xEnv, const char *cfn)
{
XrdSecGetProt_t secGetProt = 0;
char idBuff[256];
int n;
// Obtain our uid and username
//
myUID = geteuid();
if ((n = XrdOucUtils::UidName(myUID, idBuff, sizeof(idBuff))))
{myUName = strdup(idBuff);
myUNLen = n;
}
// Obtain our gid and groupname
//
myGID = getegid();
if ((n = XrdOucUtils::GidName(myGID, idBuff, sizeof(idBuff))))
{myGName = strdup(idBuff);
myGNLen = n;
}
// TLS support is independent of security per se. Record context, if any.
//
if (tlsCtx) xEnv.PutPtr("XrdTLSContext*", (void *)tlsCtx);
// Check if we need to load anything
//
if (!SecLib)
{eDest.Say("Config warning: 'xrootd.seclib' not specified;"
" strong authentication disabled!");
xEnv.PutPtr("XrdSecGetProtocol*", (void *)0);
xEnv.PutPtr("XrdSecProtector*" , (void *)0);
return 1;
}
// Blad some debugging info
//
TRACE(DEBUG, "Loading security library " <<SecLib);
// Load the security server
//
if (!(CIA = XrdSecLoadSecService(&eDest, cfn,
(strcmp(SecLib,"default") ? SecLib : 0),
&secGetProt, &DHS)))
{eDest.Emsg("Config", "Unable to load security system.");
return 0;
}
// Set environmental pointers
//
xEnv.PutPtr("XrdSecGetProtocol*", (void *)secGetProt);
xEnv.PutPtr("XrdSecProtector*" , (void *)DHS);
// If any protocol needs TLS then all logins must use TLS, ufortunately.
//
const char *tlsProt = CIA->protTLS();
if (tlsProt) return CheckTLS(tlsProt);
return 1;
}
/******************************************************************************/
/* x a s y n c */
/******************************************************************************/
/* Function: xasync
Purpose: To parse directive: async [limit <aiopl>] [maxsegs <msegs>]
[maxtot <mtot>] [segsize <segsize>]
[minsize <iosz>] [maxstalls <cnt>]
[timeout <tos>]
[Debug] [force] [syncw] [off]
[nocache] [nosf]
<aiopl> maximum number of async req per link. Default 8.
<msegs> maximum number of async ops per request. Default 8.
<mtot> maximum number of async ops per server. Default is 4096.
of maximum connection times aiopl divided by two.
<segsz> The aio segment size. This is the maximum size that data
will be read or written. The defaults to 64K but is
adjusted for each request to minimize latency.
<iosz> the minimum number of bytes that must be read or written
to allow async processing to occur (default is maxbsz/2
typically 1M).
<tos> second timeout for async I/O.
<cnt> Maximum number of client stalls before synchronous i/o is
used. Async mode is tried after <cnt> requests.
Debug Turns on async I/O for everything. This an internal
undocumented option used for testing purposes.
force Uses async i/o for all requests, even when not explicitly
requested (this is compatible with synchronous clients).
syncw Use synchronous i/o for write requests.
off Disables async i/o
nocache Disables async I/O is this is a caching proxy.
nosf Disables use of sendfile to send data to the client.
Output: 0 upon success or 1 upon failure.
*/
int XrdXrootdProtocol::xasync(XrdOucStream &Config)
{
char *val;
int i, ppp;
int V_force=-1, V_syncw = -1, V_off = -1, V_mstall = -1, V_nosf = -1;
int V_limit=-1, V_msegs=-1, V_mtot=-1, V_minsz=-1, V_segsz=-1;
int V_minsf=-1, V_debug=-1, V_noca=-1, V_tmo=-1;
long long llp;
struct asyncopts {const char *opname; int minv; int *oploc;
const char *opmsg;} asopts[] =
{
{"Debug", -1, &V_debug, ""},
{"force", -1, &V_force, ""},
{"off", -1, &V_off, ""},
{"nocache", -1, &V_noca, ""},
{"nosf", -1, &V_nosf, ""},
{"syncw", -1, &V_syncw, ""},
{"limit", 0, &V_limit, "async limit"},
{"segsize", 4096, &V_segsz, "async segsize"},
{"timeout", 0, &V_tmo, "async timeout"},
{"maxsegs", 0, &V_msegs, "async maxsegs"},
{"maxstalls", 0, &V_mstall,"async maxstalls"},
{"maxtot", 0, &V_mtot, "async maxtot"},
{"minsfsz", 1, &V_minsf, "async minsfsz"},
{"minsize", 4096, &V_minsz, "async minsize"}};
int numopts = sizeof(asopts)/sizeof(struct asyncopts);
if (!(val = Config.GetWord()))
{eDest.Emsg("Config", "async option not specified"); return 1;}
while (val)
{for (i = 0; i < numopts; i++)
if (!strcmp(val, asopts[i].opname))
{if (asopts[i].minv >= 0 && !(val = Config.GetWord()))
{eDest.Emsg("Config","async",(char *)asopts[i].opname,
"value not specified");
return 1;
}
if (asopts[i].minv > 0)
if (XrdOuca2x::a2sz(eDest,asopts[i].opmsg, val, &llp,
(long long)asopts[i].minv)) return 1;
else *asopts[i].oploc = (int)llp;
else if (asopts[i].minv == 0)
if (XrdOuca2x::a2i(eDest,asopts[i].opmsg,val,&ppp,1))
return 1;
else *asopts[i].oploc = ppp;
else *asopts[i].oploc = 1;
break;
}
if (i >= numopts)
eDest.Emsg("Config", "Warning, invalid async option", val);
val = Config.GetWord();
}
// Make sure max values are consistent
//
if (V_limit > 0 && V_mtot > 0 && V_limit > V_mtot)
{eDest.Emsg("Config", "async limit may not be greater than maxtot");
return 1;
}
// Calculate the actual segment size
//
if (V_segsz > 0)
{i = BPool->Recalc(V_segsz);
if (!i) {eDest.Emsg("Config", "async segsize is too large"); return 1;}
if (i != V_segsz)
{char buff[64];
sprintf(buff, "%d readjusted to %d", V_segsz, i);
eDest.Emsg("Config", "async segsize", buff);
V_segsz = i;
}
}
// Calculate actual timeout
//
if (V_tmo >= 0)
{i = V_tmo;
if (V_tmo < 1) i = 1;
else if (V_tmo > 360) i = 360;
if (i != V_tmo)
{char buff[64];
sprintf(buff, "%d readjusted to %d", V_tmo, i);
eDest.Emsg("Config", "async timeout", buff);
V_tmo = i;
}
}
// Establish async options
//
if (V_limit > 0) as_maxperlnk = V_limit;
if (V_msegs > 0) as_maxperreq = V_msegs;
if (V_mtot > 0) as_maxpersrv = V_mtot;
if (V_minsz > 0) as_miniosz = V_minsz;
if (V_segsz > 0){as_segsize = V_segsz; as_seghalf = V_segsz/2;}
if (V_tmo > 0) as_timeout = V_tmo;
if (V_mstall> 0) as_maxstalls = V_mstall;
if (V_debug > 0) asyncFlags |= asDebug;
if (V_force > 0) as_force = true;
if (V_off > 0) as_aioOK = false;
if (V_syncw > 0) as_syncw = true;
if (V_noca > 0) asyncFlags |= asNoCache;
if (V_nosf > 0) as_nosf = true;
if (V_minsf > 0) as_minsfsz = V_minsf;
return 0;
}
/******************************************************************************/
/* x b i f */
/******************************************************************************/
/* Function: xbif
Purpose: To parse the directive: bindif <trg>
<trg>: <host>:<port>[%<prvhost>:<port>]] [<trg>]
*/
namespace XrdXrootd
{
char *bifResp[2] = {0,0};
int bifRLen[2] = {0,0};
}
int XrdXrootdProtocol::xbif(XrdOucStream &Config)
{
static const int brSize = sizeof(XrdProto::bifReqs);
using XrdXrootd::bifResp;
using XrdXrootd::bifRLen;
XrdOucString bSpec[2];
char *bHost[2], *val, buff[512];
int bPort[2], thePort;
// Cleanup any previous bif specification
//
if (bifResp[1])
{if (bifResp[1] != bifResp[0]) free(bifResp[1]);
bifResp[1] = 0; bifRLen[1] = 0;
}
if (bifResp[0])
{free(bifResp[0]);
bifResp[0] = 0; bifRLen[0] = 0;
}
// Process all of the options
//
while((val = Config.GetWord()) && *val)
{if (!xred_php(val, bHost, bPort, "bindif", true)) return 1;
for (int i = 0; i < 2 && bHost[i] != 0; i++)
{thePort = (bPort[i] ? bPort[i] : XrdXrootdPort);
snprintf(buff, sizeof(buff), "%s%s:%d",
(bSpec[i].length() ? "," : ""), bHost[i], thePort);
bSpec[i] += buff;
}
}
// Generate the "b" record for each type of interface
//
for (int i = 0; i < 2 && bSpec[i].length(); i++)
{int n = brSize + bSpec[i].length() + 1;
n = (n + 7) & ~7;
XrdProto::bifReqs *bifRec = (XrdProto::bifReqs *)malloc(n);
memset(bifRec, 0, n);
bifRec->theTag = 'B';
bifRec->bifILen = htons(static_cast<kXR_unt16>(n-brSize));
strcpy(((char *)bifRec)+brSize, bSpec[i].c_str());
bifResp[i] = (char *)bifRec;
bifRLen[i] = n;
}
// Now complete the definition
//
if (bifResp[0] && bifResp[1] == 0)
{bifResp[1] = bifResp[0];
bifRLen[1] = bifRLen[0];
}
// All done
//
return 0;
}
/******************************************************************************/
/* x c k s u m */
/******************************************************************************/
/* Function: xcksum
Purpose: To parse the directive: chksum [chkcgi] [max <n>] <type> [<path>]
max maximum number of simultaneous jobs