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XrdSecProtocolgsi.cc
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XrdSecProtocolgsi.cc
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/******************************************************************************/
/* */
/* X r d S e c P r o t o c o l g s i . c c */
/* */
/* (c) 2005 G. Ganis / CERN */
/* */
/* 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 <ctype.h>
#include <errno.h>
#include <stdlib.h>
#include <strings.h>
#include <stdio.h>
#include <sys/param.h>
#include <pwd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <dirent.h>
#include "XrdVersion.hh"
#include "XrdNet/XrdNetAddr.hh"
#include "XrdSys/XrdSysHeaders.hh"
#include "XrdSys/XrdSysLogger.hh"
#include "XrdSys/XrdSysError.hh"
#include "XrdOuc/XrdOucPinLoader.hh"
#include "XrdOuc/XrdOucStream.hh"
#include "XrdOuc/XrdOucEnv.hh"
#include "XrdSut/XrdSutAux.hh"
#include "XrdCrypto/XrdCryptoMsgDigest.hh"
#include "XrdCrypto/XrdCryptoX509Chain.hh"
#include "XrdCrypto/XrdCryptoX509Req.hh"
#include "XrdSecgsi/XrdSecProtocolgsi.hh"
/******************************************************************************/
/* T r a c i n g I n i t O p t i o n s */
/******************************************************************************/
#ifndef NODEBUG
#define POPTS(t,y) {if (t) {t->Beg(epname); cerr <<y; t->End();}}
#else
#define POPTS(t,y)
#endif
/******************************************************************************/
/* S t a t i c D a t a */
/******************************************************************************/
static String Prefix = "xrd";
static String ProtoID = XrdSecPROTOIDENT;
static const kXR_int32 Version = XrdSecgsiVERSION;
static const char *gsiClientSteps[] = {
"kXGC_none",
"kXGC_certreq",
"kXGC_cert",
"kXGC_reserved"
};
static const char *gsiServerSteps[] = {
"kXGS_none",
"kXGS_init",
"kXGS_cert",
"kXGS_reserved"
};
static const char *gGSErrStr[] = {
"ErrParseBuffer", // 10000
"ErrDecodeBuffer", // 10001
"ErrLoadCrypto", // 10002
"ErrBadProtocol", // 10003
"ErrCreateBucket", // 10004
"ErrDuplicateBucket", // 10005
"ErrCreateBuffer", // 10006
"ErrSerialBuffer", // 10007
"ErrGenCipher", // 10008
"ErrExportPuK", // 10009
"ErrEncRndmTag", // 10010
"ErrBadRndmTag", // 10011
"ErrNoRndmTag", // 10012
"ErrNoCipher", // 10013
"ErrNoCreds", // 10014
"ErrBadOpt", // 10015
"ErrMarshal", // 10016
"ErrUnmarshal", // 10017
"ErrSaveCreds", // 10018
"ErrNoBuffer", // 10019
"ErrRefCipher", // 10020
"ErrNoPublic", // 10021
"ErrAddBucket", // 10022
"ErrFinCipher", // 10023
"ErrInit", // 10024
"ErrBadCreds", // 10025
"ErrError" // 10026
};
// One day in secs
static const int kOneDay = 86400;
static const char *gUsrPxyDef = "/tmp/x509up_u";
/******************************************************************************/
/* S t a t i c C l a s s D a t a */
/******************************************************************************/
XrdSysMutex XrdSecProtocolgsi::gsiContext;
String XrdSecProtocolgsi::CAdir = "/etc/grid-security/certificates/";
String XrdSecProtocolgsi::CRLdir = "/etc/grid-security/certificates/";
String XrdSecProtocolgsi::DefCRLext= ".r0";
String XrdSecProtocolgsi::GMAPFile = "/etc/grid-security/grid-mapfile";
String XrdSecProtocolgsi::SrvCert = "/etc/grid-security/xrd/xrdcert.pem";
String XrdSecProtocolgsi::SrvKey = "/etc/grid-security/xrd/xrdkey.pem";
String XrdSecProtocolgsi::UsrProxy;
String XrdSecProtocolgsi::UsrCert = "/.globus/usercert.pem";
String XrdSecProtocolgsi::UsrKey = "/.globus/userkey.pem";
String XrdSecProtocolgsi::PxyValid = "12:00";
int XrdSecProtocolgsi::DepLength= 0;
int XrdSecProtocolgsi::DefBits = 512;
int XrdSecProtocolgsi::CACheck = 1;
int XrdSecProtocolgsi::CRLCheck = 1;
int XrdSecProtocolgsi::CRLDownload = 0;
int XrdSecProtocolgsi::CRLRefresh = 86400;
int XrdSecProtocolgsi::GMAPOpt = 1;
bool XrdSecProtocolgsi::GMAPuseDNname = 0;
String XrdSecProtocolgsi::DefCrypto= "ssl";
String XrdSecProtocolgsi::DefCipher= "aes-128-cbc:bf-cbc:des-ede3-cbc";
String XrdSecProtocolgsi::DefMD = "sha1:md5";
String XrdSecProtocolgsi::DefError = "invalid credentials ";
int XrdSecProtocolgsi::PxyReqOpts = 0;
int XrdSecProtocolgsi::AuthzPxyWhat = -1;
int XrdSecProtocolgsi::AuthzPxyWhere = -1;
XrdSecgsiGMAP_t XrdSecProtocolgsi::GMAPFun = 0;
XrdSecgsiAuthz_t XrdSecProtocolgsi::AuthzFun = 0;
XrdSecgsiAuthzKey_t XrdSecProtocolgsi::AuthzKey = 0;
int XrdSecProtocolgsi::AuthzCertFmt = -1;
int XrdSecProtocolgsi::GMAPCacheTimeOut = -1;
int XrdSecProtocolgsi::AuthzCacheTimeOut = 43200; // 12h, default
String XrdSecProtocolgsi::SrvAllowedNames;
int XrdSecProtocolgsi::VOMSAttrOpt = 1;
XrdSecgsiAuthz_t XrdSecProtocolgsi::VOMSFun = 0;
int XrdSecProtocolgsi::VOMSCertFmt = -1;
int XrdSecProtocolgsi::MonInfoOpt = 0;
bool XrdSecProtocolgsi::HashCompatibility = 1;
bool XrdSecProtocolgsi::TrustDNS = true;
//
// Crypto related info
int XrdSecProtocolgsi::ncrypt = 0; // Number of factories
XrdCryptoFactory *XrdSecProtocolgsi::cryptF[XrdCryptoMax] = {0}; // their hooks
int XrdSecProtocolgsi::cryptID[XrdCryptoMax] = {0}; // their IDs
String XrdSecProtocolgsi::cryptName[XrdCryptoMax] = {0}; // their names
XrdCryptoCipher *XrdSecProtocolgsi::refcip[XrdCryptoMax] = {0}; // ref for session ciphers
//
// Caches
XrdSutCache XrdSecProtocolgsi::cacheCA; // Server certificates info cache (default size 144)
XrdSutCache XrdSecProtocolgsi::cacheCert(8,13); // Server certificates info cache (Fibonacci-based sizes)
XrdSutCache XrdSecProtocolgsi::cachePxy(8,13); // Client proxies cache (Fibonacci-based sizes)
XrdSutCache XrdSecProtocolgsi::cacheGMAPFun; // Entries mapped by GMAPFun (default size 144)
XrdSutCache XrdSecProtocolgsi::cacheAuthzFun; // Entities filled by AuthzFun (default size 144)
//
// Services
XrdOucGMap *XrdSecProtocolgsi::servGMap = 0; // Grid map service
//
// CA and CRL stacks
GSIStack<XrdCryptoX509Chain> XrdSecProtocolgsi::stackCA; // Stack of CA in use
GSIStack<XrdCryptoX509Crl> XrdSecProtocolgsi::stackCRL; // Stack of CRL in use
//
// GMAP control vars
time_t XrdSecProtocolgsi::lastGMAPCheck = -1; // Time of last check
XrdSysMutex XrdSecProtocolgsi::mutexGMAP; // Mutex to control GMAP reloads
//
// Running options / settings
int XrdSecProtocolgsi::Debug = 0; // [CS] Debug level
bool XrdSecProtocolgsi::Server = 1; // [CS] If server mode
int XrdSecProtocolgsi::TimeSkew = 300; // [CS] Allowed skew in secs for time stamps
//
// Debug an tracing
XrdSysError XrdSecProtocolgsi::eDest(0, "secgsi_");
XrdSysLogger XrdSecProtocolgsi::Logger;
XrdOucTrace *XrdSecProtocolgsi::GSITrace = 0;
XrdOucTrace *gsiTrace = 0;
/******************************************************************************/
/* S t a t i c F u n c t i o n s */
/******************************************************************************/
//_____________________________________________________________________________
static const char *ClientStepStr(int kclt)
{
// Return string with client step
static const char *ukn = "Unknown";
kclt = (kclt < 0) ? 0 : kclt;
kclt = (kclt > kXGC_reserved) ? 0 : kclt;
kclt = (kclt >= kXGC_certreq) ? (kclt - kXGC_certreq + 1) : kclt;
if (kclt < 0 || kclt > (kXGC_reserved - kXGC_certreq + 1))
return ukn;
else
return gsiClientSteps[kclt];
}
//_____________________________________________________________________________
static const char *ServerStepStr(int ksrv)
{
// Return string with server step
static const char *ukn = "Unknown";
ksrv = (ksrv < 0) ? 0 : ksrv;
ksrv = (ksrv > kXGS_reserved) ? 0 : ksrv;
ksrv = (ksrv >= kXGS_init) ? (ksrv - kXGS_init + 1) : ksrv;
if (ksrv < 0 || ksrv > (kXGS_reserved - kXGS_init + 1))
return ukn;
else
return gsiServerSteps[ksrv];
}
/******************************************************************************/
/* D u m p o f H a n d s h a k e v a r i a b l e s */
/******************************************************************************/
//_____________________________________________________________________________
void gsiHSVars::Dump(XrdSecProtocolgsi *p)
{
// Dump content
EPNAME("HSVars::Dump");
PRINT("----------------------------------------------------------------");
PRINT("protocol instance: "<<p);
PRINT("this: "<<this);
PRINT(" ");
PRINT("Time stamp: "<<TimeStamp);
PRINT("Crypto mod: "<<CryptoMod);
PRINT("Remote version: "<<RemVers);
PRINT("Ref cipher: "<<Rcip);
PRINT("Bucket for exp cert: "<<Cbck);
PRINT("Handshake ID: "<<ID);
PRINT("Cache reference: "<<Cref);
PRINT("Relevant file entry: "<<Pent);
PRINT("Chain pointer: "<<Chain);
PRINT("CRL pointer: "<<Crl);
PRINT("Proxy chain: "<<PxyChain);
PRINT("Rndm tag checked: "<<RtagOK);
PRINT("Last step: "<<LastStep);
PRINT("Options: "<<Options);
PRINT("----------------------------------------------------------------");
}
/******************************************************************************/
/* P r o t o c o l I n i t i a l i z a t i o n M e t h o d s */
/******************************************************************************/
//_____________________________________________________________________________
XrdSecProtocolgsi::XrdSecProtocolgsi(int opts, const char *hname,
XrdNetAddrInfo &endPoint,
const char *parms) : XrdSecProtocol("gsi")
{
// Default constructor
EPNAME("XrdSecProtocolgsi");
if (QTRACE(Authen)) { PRINT("constructing: "<<this); }
// Create instance of the handshake vars
if ((hs = new gsiHSVars())) {
// Update time stamp
hs->TimeStamp = time(0);
// Local handshake variables
hs->Tty = (isatty(0) == 0 || isatty(1) == 0) ? 0 : 1;
} else {
PRINT("could not create handshake vars object");
}
// Set host name and address
// The hostname is critical for the GSI protocol; it must match the potential
// names on the remote EEC. We default to the hostname requested by the user to
// the client (or proxy). However, as we may have been redirected to an IP
// address instead of an actual hostname, we must fallback to a reverse DNS lookup.
// As of time of testing (June 2018), EOS will redirect to an IP address to handle
// metadata commands and rely on the reverse DNS lookup for GSI security to function.
// Hence, this fallback likely needs to be kept for some time.
//
// We provide servers a switch and clients an environment variable to override all
// usage of DNS (processed on XrdSecProtocolgsiInit).
// Default is to fallback to DNS lookups in limited
// cases for backward compatibility.
if (TrustDNS) {
if (!hname || !XrdNetAddrInfo::isHostName(hname)) {
Entity.host = strdup(endPoint.Name(""));
} else {
// At this point, hname still may possibly be a non-qualified domain name.
// If there is a '.' character, then we assume it is a qualified domain name --
// otherwise, we use DNS.
//
// NOTE: We can definitively test whether this is a qualified domain name by
// simply appending a '.' to `hname` and performing a lookup. However, this
// causes DNS to be used by every lookup - meaning we rely on the security
// of DNS for all cases; we want to avoid this.
if (strchr(hname, '.')) {
// We have a valid hostname; proceed.
Entity.host = strdup(hname);
} else {
XrdNetAddr xrd_addr;
char canonname[256];
if (!xrd_addr.Set(hname) || (xrd_addr.Format(canonname, 256, XrdNetAddrInfo::fmtName, XrdNetAddrInfo::noPort) <= 0)) {
Entity.host = strdup(hname);
} else {
Entity.host = strdup(canonname);
}
}
}
} else {
// We have been told via environment variable to not trust DNS; use the exact
// hostname provided by the user.
Entity.host = strdup(hname);
}
epAddr = endPoint;
Entity.addrInfo = &epAddr;
// Init session variables
sessionCF = 0;
sessionKey = 0;
bucketKey = 0;
sessionMD = 0;
sessionKsig = 0;
sessionKver = 0;
sessionKver = 0;
proxyChain = 0;
//
// Notify, if required
DEBUG("constructing: host: "<< Entity.host);
DEBUG("p: "<<XrdSecPROTOIDENT<<", plen: "<<XrdSecPROTOIDLEN);
//
// basic settings
options = opts;
srvMode = 0;
//
// Mode specific initializations
if (Server) {
srvMode = 1;
DEBUG("mode: server");
} else {
DEBUG("mode: client");
//
// Decode received buffer
if (parms) {
XrdOucString p("&P=gsi,");
p += parms;
hs->Parms = new XrdSutBuffer(p.c_str(), p.length());
}
}
// We are done
String vers = Version;
vers.insert('.',vers.length()-2);
vers.insert('.',vers.length()-5);
DEBUG("object created: v"<<vers.c_str());
}
//_____________________________________________________________________________
char *XrdSecProtocolgsi::Init(gsiOptions opt, XrdOucErrInfo *erp)
{
// Static method to the configure the static part of the protocol
// Called once by XrdSecProtocolgsiInit
EPNAME("Init");
char *Parms = 0;
//
// Debug an tracing
Debug = (opt.debug > -1) ? opt.debug : Debug;
// We must have the tracing object at this point
// (initialized in XrdSecProtocolgsiInit)
if (!gsiTrace) {
ErrF(erp,kGSErrInit,"tracing object (gsiTrace) not initialized! cannot continue");
return Parms;
}
// Set debug mask ... also for auxilliary libs
int trace = 0, traceSut = 0, traceCrypto = 0;
if (Debug >= 3) {
trace = cryptoTRACE_Dump;
traceSut = sutTRACE_Dump;
traceCrypto = cryptoTRACE_Dump;
GSITrace->What = TRACE_ALL;
} else if (Debug >= 2) {
trace = cryptoTRACE_Debug;
traceSut = sutTRACE_Debug;
traceCrypto = cryptoTRACE_Debug;
GSITrace->What = TRACE_Debug;
GSITrace->What |= TRACE_Authen;
} else if (Debug >= 1) {
trace = cryptoTRACE_Debug;
traceSut = sutTRACE_Notify;
traceCrypto = cryptoTRACE_Notify;
GSITrace->What = TRACE_Debug;
}
// ... also for auxilliary libs
XrdSutSetTrace(traceSut);
XrdCryptoSetTrace(traceCrypto);
// Name hashing algorithm compatibility
if (opt.hashcomp == 0) HashCompatibility = 0;
//
// Operation mode
Server = (opt.mode == 's');
//
// CA verification level
//
// 0 do not verify
// 1 verify if self-signed; warn if not
// 2 verify in all cases; fail if not possible
//
if (opt.ca >= 0 && opt.ca <= 2)
CACheck = opt.ca;
DEBUG("option CACheck: "<<CACheck);
//
// Check existence of CA directory
struct stat st;
if (opt.certdir) {
DEBUG("testing CA dir(s): "<<opt.certdir);
String CAtmp;
String tmp = opt.certdir;
String dp;
int from = 0;
while ((from = tmp.tokenize(dp, from, ',')) != -1) {
if (dp.length() > 0) {
if (XrdSutExpand(dp) == 0) {
if (stat(dp.c_str(),&st) == -1) {
if (errno == ENOENT) {
ErrF(erp,kGSErrError,"CA directory non existing:",dp.c_str());
PRINT(erp->getErrText());
} else {
ErrF(erp,kGSErrError,"cannot stat CA directory:",dp.c_str());
PRINT(erp->getErrText());
}
} else {
if (!(dp.endswith('/'))) dp += '/';
if (!(CAtmp.endswith(','))) CAtmp += ',';
CAtmp += dp;
}
} else {
PRINT("Warning: could not expand: "<<dp);
}
}
}
if (CAtmp.length() > 0)
CAdir = CAtmp;
}
DEBUG("using CA dir(s): "<<CAdir);
//
// CRL check level
//
// 0 do not care
// 1 use if available
// 2 require
// 3 require not expired
// 12 require; try download if missing
// 13 require not expired; try download if missing
//
const char *cocrl[] = { "do-not-care", "use-if-available", "require", "require-not-expired" };
const char *codwld[] = { "no", "yes"};
if (opt.crl >= 10) {
CRLDownload = 1;
opt.crl %= 10;
}
if (opt.crl >= 0 && opt.crl <= 3)
CRLCheck = opt.crl;
DEBUG("option CRLCheck: "<<CRLCheck<<" ('"<<cocrl[CRLCheck]<<"'; download? "<<
codwld[CRLDownload]<<")");
//
// Check existence of CRL directory
if (opt.crldir) {
DEBUG("testing CRL dir(s): "<<opt.crldir);
String CRLtmp;
String tmp = opt.crldir;
String dp;
int from = 0;
while ((from = tmp.tokenize(dp, from, ',')) != -1) {
if (dp.length() > 0) {
if (XrdSutExpand(dp) == 0) {
if (stat(dp.c_str(),&st) == -1) {
if (errno == ENOENT) {
ErrF(erp,kGSErrError,"CRL directory non existing:",dp.c_str());
PRINT(erp->getErrText());
} else {
ErrF(erp,kGSErrError,"cannot stat CRL directory:",dp.c_str());
PRINT(erp->getErrText());
}
} else {
if (!(dp.endswith('/'))) dp += '/';
if (!(CRLtmp.endswith(','))) CRLtmp += ',';
CRLtmp += dp;
}
} else {
PRINT("Warning: could not expand: "<<dp);
}
}
}
if (CRLtmp.length() > 0)
CRLdir = CRLtmp;
} else {
// Use CAdir
CRLdir = CAdir;
}
if (CRLCheck > 0)
DEBUG("using CRL dir(s): "<<CRLdir);
//
// Default extension for CRL files
if (opt.crlext)
DefCRLext = opt.crlext;
//
// Refresh or expiration time for CRLs
if (opt.crlrefresh)
CRLRefresh = opt.crlrefresh;
DEBUG("CRL information refreshed every "<<CRLRefresh<<" secs");
//
// Honour trust / unstrust DNS settings (switch or env)
TrustDNS = opt.trustdns;
DEBUG("trust DNS option: "<<TrustDNS);
//
// Server specific options
if (Server) {
//
// List of supported / wanted crypto modules
if (opt.clist)
DefCrypto = opt.clist;
//
// List of crypto modules
String cryptlist(DefCrypto,0,-1,64);
//
// Load crypto modules
XrdSutPFEntry ent;
XrdCryptoFactory *cf = 0;
if (cryptlist.length()) {
String ncpt = "";
int from = 0;
while ((from = cryptlist.tokenize(ncpt, from, '|')) != -1) {
if (ncpt.length() > 0 && ncpt[0] != '-') {
// Try loading
if ((cf = XrdCryptoFactory::GetCryptoFactory(ncpt.c_str()))) {
// Add it to the list
cryptF[ncrypt] = cf;
cryptID[ncrypt] = cf->ID();
cryptName[ncrypt].insert(cf->Name(),0,strlen(cf->Name())+1);
cf->SetTrace(trace);
cf->Notify();
// Ref cipher
if (!(refcip[ncrypt] = cf->Cipher(0,0,0))) {
PRINT("ref cipher for module "<<ncpt<<
" cannot be instantiated : disable");
from -= ncpt.length();
cryptlist.erase(ncpt);
} else {
ncrypt++;
if (ncrypt >= XrdCryptoMax) {
PRINT("max number of crypto modules ("
<< XrdCryptoMax <<") reached ");
break;
}
}
} else {
PRINT("cannot instantiate crypto factory "<<ncpt<<
": disable");
from -= ncpt.length();
cryptlist.erase(ncpt);
}
}
}
}
//
// We need at least one valid crypto module
if (ncrypt <= 0) {
ErrF(erp,kGSErrInit,"could not find any valid crypto module");
PRINT(erp->getErrText());
return Parms;
}
//
// List of supported / wanted ciphers
if (opt.cipher)
DefCipher = opt.cipher;
// make sure we support all of them
String cip = "";
int from = 0;
while ((from = DefCipher.tokenize(cip, from, ':')) != -1) {
if (cip.length() > 0) {
int i = 0;
for (; i < ncrypt; i++) {
if (!(cryptF[i]->SupportedCipher(cip.c_str()))) {
// Not supported: drop from the list
DEBUG("cipher type not supported ("<<cip<<") - disabling");
from -= cip.length();
DefCipher.erase(cip);
}
}
}
}
//
// List of supported / wanted Message Digest
if (opt.md)
DefMD = opt.md;
// make sure we support all of them
String md = "";
from = 0;
while ((from = DefMD.tokenize(md, from, ':')) != -1) {
if (md.length() > 0) {
int i = 0;
for (; i < ncrypt; i++) {
if (!(cryptF[i]->SupportedMsgDigest(md.c_str()))) {
// Not supported: drop from the list
PRINT("MD type not supported ("<<md<<") - disabling");
from -= md.length();
DefMD.erase(md);
}
}
}
}
//
// Load server certificate and key
if (opt.cert) {
String TmpCert = opt.cert;
if (XrdSutExpand(TmpCert) == 0) {
SrvCert = TmpCert;
} else {
PRINT("Could not expand: "<<opt.cert<<": use default");
}
}
if (opt.key) {
String TmpKey = opt.key;
if (XrdSutExpand(TmpKey) == 0) {
SrvKey = TmpKey;
} else {
PRINT("Could not expand: "<<opt.key<<": use default");
}
}
//
// Check if we can read the certificate key
if (access(SrvKey.c_str(), R_OK)) {
PRINT("WARNING: process has no permission to read the certificate key file: "<<SrvKey);
}
int i = 0;
String certcalist = ""; // list of CA for server certificates
XrdSutCERef ceref;
for (; i<ncrypt; i++) {
if (!GetSrvCertEnt(ceref, cryptF[i], time(0), certcalist)) {
PRINT("problems loading srv cert");
ceref.UnLock();
continue;
}
}
// Rehash cache
ceref.UnLock();
//
// We must have got at least one valid certificate
if (cacheCert.Num() <= 0) {
ErrF(erp,kGSErrError,"no valid server certificate found");
PRINT(erp->getErrText());
return Parms;
}
DEBUG("CA list: "<<certcalist);
//
// GRID map check option
//
// 0 do not use (DN hash will be used as identifier)
// 1 use if available; otherwise as 0
// 2 require
// 10 do not use (DN name will be used as identifier)
// 11 use if available; otherwise as 10
const char *cogmap[] = { "do-not-use", "use-if-available", "require" };
const char *codnnm[] = { "DN hash", "DN name"};
if (opt.ogmap >= 10) {
GMAPuseDNname = 1;
opt.ogmap %= 10;
}
if (opt.ogmap >= 0 && opt.ogmap <= 2)
GMAPOpt = opt.ogmap;
DEBUG("user mapping file option: "<<cogmap[GMAPOpt]);
if (GMAPOpt < 2)
DEBUG("default option for entity name if no mapping available: "<<codnnm[(int)GMAPuseDNname]);
//
// Check existence of GRID map file
if (opt.gridmap) {
String GMAPTmp = opt.gridmap;
if (XrdSutExpand(GMAPTmp) == 0) {
GMAPFile = GMAPTmp;
} else {
PRINT("Could not expand: "<<opt.gridmap<<": use default");
}
}
bool hasgmap = 0;
if (GMAPOpt > 0) {
// Initialize the GMap service
//
String pars;
if (Debug) pars += "dbg|";
if (opt.gmapto > 0) { pars += "to="; pars += (int)opt.gmapto; }
if (!(servGMap = XrdOucgetGMap(&eDest, GMAPFile.c_str(), pars.c_str()))) {
if (GMAPOpt > 1) {
ErrF(erp,kGSErrError,"error loading grid map file:",GMAPFile.c_str());
PRINT(erp->getErrText());
return Parms;
} else {
NOTIFY("Grid map file: "<<GMAPFile<<" cannot be 'access'ed: do not use");
}
} else {
DEBUG("using grid map file: "<<GMAPFile);
hasgmap = 1;
}
}
//
// Load function be used to map DN to usernames, if specified
bool hasgmapfun = 0;
if (opt.gmapfun && GMAPOpt > 0) {
if (!(GMAPFun = LoadGMAPFun((const char *) opt.gmapfun,
(const char *) opt.gmapfunparms))) {
ErrF(erp, kGSErrError, "GMAP plug-in could not be loaded", opt.gmapfun);
PRINT(erp->getErrText());
return Parms;
} else {
hasgmapfun = 1;
}
}
//
// Disable GMAP if neither a grid mapfile nor a GMAP function are available
if (!hasgmap && !hasgmapfun) {
if (GMAPOpt > 1) {
ErrF(erp,kGSErrError,"User mapping required, but neither a grid mapfile"
" nor a mapping function are available");
PRINT(erp->getErrText());
return Parms;
}
GMAPOpt = 0;
}
//
// Authorization function
bool hasauthzfun = 0;
if (opt.authzfun) {
if (!(AuthzFun = LoadAuthzFun((const char *) opt.authzfun,
(const char *) opt.authzfunparms, AuthzCertFmt))) {
ErrF(erp, kGSErrError, "Authz plug-in could not be loaded", opt.authzfun);
PRINT(erp->getErrText());
return Parms;
} else {
hasauthzfun = 1;
// Notify certificate format
if (AuthzCertFmt >= 0 && AuthzCertFmt <= 1) {
const char *ccfmt[] = { "raw", "PEM base64" };
DEBUG("authzfun: proxy certificate format: "<<ccfmt[AuthzCertFmt]);
} else {
NOTIFY("authzfun: proxy certificate format: unknown (code: "<<AuthzCertFmt<<")");
}
// Expiration of Authz related cache entries
if (opt.authzto > 0) {
AuthzCacheTimeOut = opt.authzto;
DEBUG("grid-map cache entries expire after "<<AuthzCacheTimeOut<<" secs");
}
}
}
//
// Expiration of GRIDMAP related cache entries
if (GMAPOpt > 0 && !hasauthzfun && opt.gmapto > 0) {
GMAPCacheTimeOut = opt.gmapto;
DEBUG("grid-map cache entries expire after "<<GMAPCacheTimeOut<<" secs");
}
//
// Request for proxy export for authorization
// authzpxy = opt_what*10 + opt_where
// opt_what = 0 full chain
// 1 last proxy only
// opt_where = 1 Entity.creds
// 2 Entity.endorsements
if (opt.authzpxy > 0) {
AuthzPxyWhat = opt.authzpxy / 10;
AuthzPxyWhere = opt.authzpxy % 10;
// Some notification
const char *capxy_what = (AuthzPxyWhat == 1) ? "'last proxy only'"
: "'full proxy chain'";
const char *capxy_where = (AuthzPxyWhere == 1) ? "XrdSecEntity.creds"
: "XrdSecEntity.endorsements";
DEBUG("Export proxy for authorization in '"<<capxy_where<<"': "<<capxy_what);
if (hasauthzfun) {
// Warn user about possible overwriting of Entity.creds or Entity.endorsements
PRINT("WARNING: proxy export for authz enabled: be aware that any setting of '"<<capxy_what<<
"' done by '"<<opt.authzfun<<"' will get overwritten with "<<capxy_what);
}
}
//
// Handle delegated proxies options
if (opt.dlgpxy == -1) {
// Will not accept any delegated proxies
DEBUG("Will not accept delegated proxies");
} else {
// Ask the client to sign a delegated proxy; client may decide to forward its proxy
if (opt.dlgpxy == 1)
PxyReqOpts |= kOptsSrvReq;
// Exporting options (default none: delegated proxy kept in memory, in proxyChain)
if (opt.exppxy) {
if (!strcmp(opt.exppxy, "=creds")) {
// register the delegated proxy in Entity.creds (in HEX format)
PxyReqOpts |= kOptsPxCred;
DEBUG("Delegated proxy saved in Entity.creds ");
} else {
String TmpProxy = gUsrPxyDef;
if (strcmp(opt.exppxy, "=default"))
TmpProxy = opt.exppxy;
if (XrdSutExpand(TmpProxy) == 0) {
UsrProxy = TmpProxy;
} else {
UsrProxy = gUsrPxyDef;
UsrProxy += "u<uid>";
}
DEBUG("File template for delegated proxy: "<<UsrProxy);
}
}
DEBUG("Delegated proxies options: "<<PxyReqOpts);
}
//
// VOMS attributes switch
// vomsat = 0 do not look for
// 1 extract if any (fill 'vorg', 'role'; the full string in 'endorsements');
// 2 require (fill 'vorg', 'role'; the full string in 'endorsements');
VOMSAttrOpt = (opt.vomsat <= 2 && opt.vomsat >= 0) ? opt.vomsat : VOMSAttrOpt;
//
// Alternative VOMS extraction function
if (opt.vomsfun) {
if (!(VOMSFun = LoadVOMSFun((const char *) opt.vomsfun,
(const char *) opt.vomsfunparms, VOMSCertFmt))) {
ErrF(erp, kGSErrError, "VOMS plug-in could not be loaded", opt.vomsfun);
PRINT(erp->getErrText());
return Parms;
} else {
// We at least check VOMS attributes if we have a function ...
if (VOMSAttrOpt < 1) VOMSAttrOpt = 1;
// Notify certificate format
if (VOMSCertFmt >= 0 && VOMSCertFmt <= 1) {
const char *ccfmt[] = { "raw", "PEM base64" };
DEBUG("vomsfun: proxy certificate format: "<<ccfmt[VOMSCertFmt]);
} else {
NOTIFY("vomsfun: proxy certificate format: unknown (code: "<<VOMSCertFmt<<")");
}
}
}
const char *cvomsat[3] = { "ignore", "extract", "require" };
DEBUG("VOMS attributes options: "<<cvomsat[VOMSAttrOpt]);
//
// Default moninfo option
// 0 nothing
// 1 DN
MonInfoOpt = opt.moninfo;
const char *cmoninfo = (MonInfoOpt == 1) ? "DN" : "none";
DEBUG("Monitor information options: "<<cmoninfo);
//
// Parms in the form:
// &P=gsi,v:<version>,c:<cryptomod>,ca:<list_of_srv_cert_ca>
Parms = new char[cryptlist.length()+3+12+certcalist.length()+5];
if (Parms) {
sprintf(Parms,"v:%d,c:%s,ca:%s",
Version,cryptlist.c_str(),certcalist.c_str());
} else {
ErrF(erp,kGSErrInit,"no system resources for 'Parms'");
PRINT(erp->getErrText());
}
// Some notification
DEBUG("available crypto modules: "<<cryptlist);
DEBUG("issuer CAs of server certs (hashes): "<<certcalist);
}
//
// Client specific options
if (!Server) {
// use default dir $(HOME)/.<prefix>
struct passwd *pw = getpwuid(getuid());
if (!pw) {
NOTIFY("WARNING: cannot get user information (uid:"<<getuid()<<")");
}
//
// Define user proxy file
UsrProxy = gUsrPxyDef;
if (opt.proxy) {
String TmpProxy = opt.proxy;
if (XrdSutExpand(TmpProxy) == 0) {
UsrProxy = TmpProxy;
} else {
PRINT("Could not expand: "<<opt.proxy<<": use default");
}
} else {
if (pw)
UsrProxy += (int)(pw->pw_uid);
}
// Define user certificate file
if (opt.cert) {
String TmpCert = opt.cert;
if (XrdSutExpand(TmpCert) == 0) {
UsrCert = TmpCert;
} else {
PRINT("Could not expand: "<<opt.cert<<": use default");
}
} else {
if (pw)
UsrCert.insert(XrdSutHome(),0);
}
// Define user private key file
if (opt.key) {
String TmpKey = opt.key;
if (XrdSutExpand(TmpKey) == 0) {
UsrKey = TmpKey;
} else {
PRINT("Could not expand: "<<opt.key<<": use default");
}
} else {
if (pw)
UsrKey.insert(XrdSutHome(),0);
}
// Define proxy validity at renewal
if (opt.valid)
PxyValid = opt.valid;
// Set depth of signature path
if (opt.deplen != DepLength)
DepLength = opt.deplen;
// Set number of bits for proxy key
if (opt.bits > DefBits)
DefBits = opt.bits;
//
// Delegate proxy options
if (opt.dlgpxy > 0) {
PxyReqOpts |= kOptsSigReq;
if (opt.dlgpxy == 2) {
PxyReqOpts |= kOptsFwdPxy;
} else {
PxyReqOpts |= kOptsDlgPxy;
}
}
//
// Define valid CNs for the server certificates; default is null, which means that
// the server CN must be in the form "*/<hostname>"
if (opt.srvnames)
SrvAllowedNames = opt.srvnames;
//
// Notify
TRACE(Authen, "using certificate file: "<<UsrCert);
TRACE(Authen, "using private key file: "<<UsrKey);
TRACE(Authen, "proxy: file: "<<UsrProxy);
TRACE(Authen, "proxy: validity: "<<PxyValid);
TRACE(Authen, "proxy: depth of signature path: "<<DepLength);
TRACE(Authen, "proxy: bits in key: "<<DefBits);
TRACE(Authen, "server cert: allowed names: "<<SrvAllowedNames);
// We are done
Parms = (char *)"";
}