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XrdHttpProtocol.cc
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XrdHttpProtocol.cc
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//------------------------------------------------------------------------------
// This file is part of XrdHTTP: A pragmatic implementation of the
// HTTP/WebDAV protocol for the Xrootd framework
//
// Copyright (c) 2013 by European Organization for Nuclear Research (CERN)
// Author: Fabrizio Furano <furano@cern.ch>
// File Date: Nov 2012
//------------------------------------------------------------------------------
// 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 General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with XRootD. If not, see <http://www.gnu.org/licenses/>.
//------------------------------------------------------------------------------
#include "XrdVersion.hh"
#include "Xrd/XrdBuffer.hh"
#include "Xrd/XrdLink.hh"
#include "XProtocol/XProtocol.hh"
#include "XrdOuc/XrdOucStream.hh"
#include "XrdOuc/XrdOucEnv.hh"
#include "XrdOuc/XrdOucGMap.hh"
#include "XrdSys/XrdSysE2T.hh"
#include "XrdSys/XrdSysTimer.hh"
#include "XrdOuc/XrdOucPinLoader.hh"
#include "XrdHttpTrace.hh"
#include "XrdHttpProtocol.hh"
#include <sys/stat.h>
#include "XrdHttpUtils.hh"
#include "XrdHttpSecXtractor.hh"
#include "XrdHttpExtHandler.hh"
#include "XrdTls/XrdTls.hh"
#include "XrdTls/XrdTlsContext.hh"
#include <openssl/err.h>
#include <openssl/ssl.h>
#include <vector>
#include <arpa/inet.h>
#include <sstream>
#include <cctype>
#include <sys/stat.h>
#include <fcntl.h>
#define XRHTTP_TK_GRACETIME 600
/******************************************************************************/
/* G l o b a l s */
/******************************************************************************/
// It seems that eos needs this to be present
const char *XrdHttpSecEntityTident = "http";
//
// Static stuff
//
int XrdHttpProtocol::hailWait = 0;
int XrdHttpProtocol::readWait = 0;
int XrdHttpProtocol::Port = 1094;
char *XrdHttpProtocol::Port_str = 0;
//XrdXrootdStats *XrdHttpProtocol::SI = 0;
char *XrdHttpProtocol::sslcert = 0;
char *XrdHttpProtocol::sslkey = 0;
char *XrdHttpProtocol::sslcadir = 0;
char *XrdHttpProtocol::sslcipherfilter = 0;
char *XrdHttpProtocol::listredir = 0;
bool XrdHttpProtocol::listdeny = false;
bool XrdHttpProtocol::embeddedstatic = true;
char *XrdHttpProtocol::staticredir = 0;
XrdOucHash<XrdHttpProtocol::StaticPreloadInfo> *XrdHttpProtocol::staticpreload = 0;
kXR_int32 XrdHttpProtocol::myRole = kXR_isManager;
bool XrdHttpProtocol::selfhttps2http = false;
bool XrdHttpProtocol::isdesthttps = false;
char *XrdHttpProtocol::sslcafile = 0;
char *XrdHttpProtocol::secretkey = 0;
char *XrdHttpProtocol::gridmap = 0;
bool XrdHttpProtocol::isRequiredGridmap = false;
int XrdHttpProtocol::sslverifydepth = 9;
BIO *XrdHttpProtocol::sslbio_err = 0;
XrdHttpSecXtractor *XrdHttpProtocol::secxtractor = 0;
bool XrdHttpProtocol::isRequiredXtractor = false;
struct XrdHttpProtocol::XrdHttpExtHandlerInfo XrdHttpProtocol::exthandler[MAX_XRDHTTPEXTHANDLERS];
int XrdHttpProtocol::exthandlercnt = 0;
std::map< std::string, std::string > XrdHttpProtocol::hdr2cgimap;
XrdScheduler *XrdHttpProtocol::Sched = 0; // System scheduler
XrdBuffManager *XrdHttpProtocol::BPool = 0; // Buffer manager
XrdSysError XrdHttpProtocol::eDest = 0; // Error message handler
XrdSecService *XrdHttpProtocol::CIA = 0; // Authentication Server
int XrdHttpProtocol::m_bio_type = 0; // BIO type identifier for our custom BIO.
BIO_METHOD *XrdHttpProtocol::m_bio_method = NULL; // BIO method constructor.
XrdSysTrace XrdHttpTrace("http");
namespace
{
const char *TraceID = "Protocol";
}
namespace XrdHttpProtoInfo
{
XrdTlsContext *xrdctx = 0;
static const int hsmAuto = -1;
static const int hsmOff = 0;
static const int hsmMan = 1;
static const int hsmOn = 1; // Dual purpose but use a meaningful varname
int httpsmode = hsmAuto;
int tlsCache = XrdTlsContext::scOff;
bool httpsspec = false;
bool xrdctxVer = false;
}
using namespace XrdHttpProtoInfo;
/******************************************************************************/
/* P r o t o c o l M a n a g e m e n t S t a c k s */
/******************************************************************************/
XrdObjectQ<XrdHttpProtocol>
XrdHttpProtocol::ProtStack("ProtStack",
"xrootd protocol anchor");
/******************************************************************************/
/* U g l y O p e n S S L w o r k a r o u n d s */
/******************************************************************************/
#if OPENSSL_VERSION_NUMBER < 0x10100000L
void *BIO_get_data(BIO *bio) {
return bio->ptr;
}
void BIO_set_data(BIO *bio, void *ptr) {
bio->ptr = ptr;
}
#if OPENSSL_VERSION_NUMBER < 0x1000105fL
int BIO_get_flags(BIO *bio) {
return bio->flags;
}
#endif
void BIO_set_flags(BIO *bio, int flags) {
bio->flags = flags;
}
int BIO_get_init(BIO *bio) {
return bio->init;
}
void BIO_set_init(BIO *bio, int init) {
bio->init = init;
}
void BIO_set_shutdown(BIO *bio, int shut) {
bio->shutdown = shut;
}
int BIO_get_shutdown(BIO *bio) {
return bio->shutdown;
}
#endif
/******************************************************************************/
/* X r d H T T P P r o t o c o l C l a s s */
/******************************************************************************/
/******************************************************************************/
/* C o n s t r u c t o r */
/******************************************************************************/
XrdHttpProtocol::XrdHttpProtocol(bool imhttps)
: XrdProtocol("HTTP protocol handler"), ProtLink(this),
SecEntity(""), CurrentReq(this) {
myBuff = 0;
Addr_str = 0;
Reset();
ishttps = imhttps;
}
/******************************************************************************/
/* A s s i g n m e n t O p e r a t o r */
/******************************************************************************/
XrdHttpProtocol XrdHttpProtocol::operator =(const XrdHttpProtocol &rhs) {
return *this;
}
/******************************************************************************/
/* M a t c h */
/******************************************************************************/
#define TRACELINK lp
XrdProtocol *XrdHttpProtocol::Match(XrdLink *lp) {
char mybuf[16], mybuf2[1024];
XrdHttpProtocol *hp;
int dlen;
bool myishttps = false;
// Peek at the first 20 bytes of data
//
if ((dlen = lp->Peek(mybuf, (int) sizeof (mybuf), hailWait)) < (int) sizeof (mybuf)) {
if (dlen <= 0) lp->setEtext("handshake not received");
return (XrdProtocol *) 0;
}
mybuf[dlen - 1] = '\0';
// Trace the data
//
TRACEI(DEBUG, "received dlen: " << dlen);
//TRACEI(REQ, "received buf: " << mybuf);
mybuf2[0] = '\0';
for (int i = 0; i < dlen; i++) {
char mybuf3[16];
sprintf(mybuf3, "%.02d ", mybuf[i]);
strcat(mybuf2, mybuf3);
}
TRACEI(DEBUG, "received dump: " << mybuf2);
// Decide if it looks http or not. For now we are happy if all the received characters are alphanumeric
bool ismine = true;
for (int i = 0; i < dlen - 1; i++)
if (!isprint(mybuf[i]) && (mybuf[i] != '\r') && (mybuf[i] != '\n')) {
ismine = false;
TRACEI(DEBUG, "This does not look like http at pos " << i);
break;
}
// If it does not look http then look if it looks like https
if ((!ismine) && (dlen >= 4)) {
char check[4] = {00, 00, 00, 00};
if (memcmp(mybuf, check, 4)) {
if (httpsmode) {
ismine = true;
myishttps = true;
TRACEI(DEBUG, "This may look like https");
} else {
TRACEI(ALL, "This may look like https, but https is not configured");
}
}
}
if (!ismine) {
TRACEI(DEBUG, "This does not look like https. Protocol not matched.");
return (XrdProtocol *) 0;
}
// It does look http or https...
// Get a protocol object off the stack (if none, allocate a new one)
//
TRACEI(REQ, "Protocol matched. https: " << myishttps);
if (!(hp = ProtStack.Pop())) hp = new XrdHttpProtocol(myishttps);
else
hp->ishttps = myishttps;
// We now have to do some work arounds to tell the underlying framework
// that is is https without invoking TLS on the actual link. Eventually,
// we should just use the link's TLS native implementation.
//
XrdNetAddr *netP = const_cast<XrdNetAddr*>(lp->NetAddr());
netP->SetDialect("https");
netP->SetTLS(true);
// Allocate 1MB buffer from pool
if (!hp->myBuff) {
hp->myBuff = BPool->Obtain(1024 * 1024);
}
hp->myBuffStart = hp->myBuffEnd = hp->myBuff->buff;
// Bind the protocol to the link and return the protocol
//
hp->Link = lp;
return (XrdProtocol *) hp;
}
char *XrdHttpProtocol::GetClientIPStr() {
char buf[256];
buf[0] = '\0';
if (!Link) return strdup("unknown");
XrdNetAddrInfo *ai = Link->AddrInfo();
if (!ai) return strdup("unknown");
if (!Link->AddrInfo()->Format(buf, 255, XrdNetAddrInfo::fmtAddr, XrdNetAddrInfo::noPort)) return strdup("unknown");
return strdup(buf);
}
// Various routines for handling XrdLink as BIO objects within OpenSSL.
#if OPENSSL_VERSION_NUMBER < 0x1000105fL
int BIO_XrdLink_write(BIO *bio, const char *data, size_t datal, size_t *written)
{
if (!data || !bio) {
*written = 0;
return 0;
}
XrdLink *lp=static_cast<XrdLink *>(BIO_get_data(bio));
errno = 0;
int ret = lp->Send(data, datal);
BIO_clear_retry_flags(bio);
if (ret <= 0) {
*written = 0;
if ((errno == EINTR) || (errno == EINPROGRESS) || (errno == EAGAIN) || (errno == EWOULDBLOCK))
BIO_set_retry_write(bio);
return ret;
}
*written = ret;
return 1;
}
#else
int BIO_XrdLink_write(BIO *bio, const char *data, int datal)
{
if (!data || !bio) {
errno = ENOMEM;
return -1;
}
errno = 0;
XrdLink *lp = static_cast<XrdLink *>(BIO_get_data(bio));
int ret = lp->Send(data, datal);
BIO_clear_retry_flags(bio);
if (ret <= 0) {
if ((errno == EINTR) || (errno == EINPROGRESS) || (errno == EAGAIN) || (errno == EWOULDBLOCK))
BIO_set_retry_write(bio);
}
return ret;
}
#endif
#if OPENSSL_VERSION_NUMBER < 0x1000105fL
static int BIO_XrdLink_read(BIO *bio, char *data, size_t datal, size_t *read)
{
if (!data || !bio) {
*read = 0;
return 0;
}
errno = 0;
XrdLink *lp = static_cast<XrdLink *>(BIO_get_data(bio));
int ret = lp->Recv(data, datal);
BIO_clear_retry_flags(bio);
if (ret <= 0) {
*read = 0;
if ((errno == EINTR) || (errno == EINPROGRESS) || (errno == EAGAIN) || (errno == EWOULDBLOCK))
BIO_set_retry_read(bio);
return ret;
}
*read = ret;
}
#else
static int BIO_XrdLink_read(BIO *bio, char *data, int datal)
{
if (!data || !bio) {
errno = ENOMEM;
return -1;
}
errno = 0;
XrdLink *lp = static_cast<XrdLink *>(BIO_get_data(bio));
int ret = lp->Recv(data, datal);
BIO_clear_retry_flags(bio);
if (ret <= 0) {
if ((errno == EINTR) || (errno == EINPROGRESS) || (errno == EAGAIN) || (errno == EWOULDBLOCK))
BIO_set_retry_read(bio);
}
return ret;
}
#endif
static int BIO_XrdLink_create(BIO *bio)
{
BIO_set_init(bio, 0);
//BIO_set_next(bio, 0);
BIO_set_data(bio, NULL);
BIO_set_flags(bio, 0);
#if OPENSSL_VERSION_NUMBER < 0x10100000L
bio->num = 0;
#endif
return 1;
}
static int BIO_XrdLink_destroy(BIO *bio)
{
if (bio == NULL) return 0;
if (BIO_get_shutdown(bio)) {
if (BIO_get_data(bio)) {
static_cast<XrdLink*>(BIO_get_data(bio))->Close();
}
BIO_set_init(bio, 0);
BIO_set_flags(bio, 0);
}
return 1;
}
static long BIO_XrdLink_ctrl(BIO *bio, int cmd, long num, void * ptr)
{
long ret = 1;
switch (cmd) {
case BIO_CTRL_GET_CLOSE:
ret = BIO_get_shutdown(bio);
break;
case BIO_CTRL_SET_CLOSE:
BIO_set_shutdown(bio, (int)num);
break;
case BIO_CTRL_DUP:
case BIO_CTRL_FLUSH:
ret = 1;
break;
default:
ret = 0;
break;
}
return ret;
}
BIO *XrdHttpProtocol::CreateBIO(XrdLink *lp)
{
if (m_bio_method == NULL)
return NULL;
BIO *ret = BIO_new(m_bio_method);
BIO_set_shutdown(ret, 0);
BIO_set_data(ret, lp);
BIO_set_init(ret, 1);
return ret;
}
/******************************************************************************/
/* P r o c e s s */
/******************************************************************************/
#undef TRACELINK
#define TRACELINK Link
int XrdHttpProtocol::Process(XrdLink *lp) // We ignore the argument here
{
int rc = 0;
TRACEI(DEBUG, " Process. lp:"<<(void *)lp<<" reqstate: "<<CurrentReq.reqstate);
if (!myBuff || !myBuff->buff || !myBuff->bsize) {
TRACE(ALL, " Process. No buffer available. Internal error.");
return -1;
}
if (!SecEntity.host) {
char *nfo = GetClientIPStr();
if (nfo) {
TRACEI(REQ, " Setting host: " << nfo);
SecEntity.host = nfo;
strcpy(SecEntity.prot, "http");
}
}
// If https then check independently for the ssl handshake
if (ishttps && !ssldone) {
if (!ssl) {
sbio = CreateBIO(Link);
BIO_set_nbio(sbio, 1);
ssl = (SSL*)xrdctx->Session();
}
if (!ssl) {
TRACEI(DEBUG, " SSL_new returned NULL");
ERR_print_errors(sslbio_err);
return -1;
}
// If a secxtractor has been loaded
// maybe it wants to add its own initialization bits
if (secxtractor)
secxtractor->InitSSL(ssl, sslcadir);
SSL_set_bio(ssl, sbio, sbio);
//SSL_set_connect_state(ssl);
//SSL_set_fd(ssl, Link->FDnum());
struct timeval tv;
tv.tv_sec = 10;
tv.tv_usec = 0;
setsockopt(Link->FDnum(), SOL_SOCKET, SO_RCVTIMEO, (struct timeval *)&tv, sizeof(struct timeval));
setsockopt(Link->FDnum(), SOL_SOCKET, SO_SNDTIMEO, (struct timeval *)&tv, sizeof(struct timeval));
TRACEI(DEBUG, " Entering SSL_accept...");
int res = SSL_accept(ssl);
TRACEI(DEBUG, " SSL_accept returned :" << res);
ERR_print_errors(sslbio_err);
if ((res == -1) && (SSL_get_error(ssl, res) == SSL_ERROR_WANT_READ)) {
TRACEI(DEBUG, " SSL_accept wants to read more bytes... err:" << SSL_get_error(ssl, res));
return 1;
}
if (res < 0) {
ERR_print_errors(sslbio_err);
SSL_free(ssl);
ssl = 0;
return -1;
}
BIO_set_nbio(sbio, 0);
ERR_print_errors(sslbio_err);
strcpy(SecEntity.prot, "https");
// Get the voms string and auth information
if (HandleAuthentication(Link)) {
SSL_free(ssl);
ssl = 0;
return -1;
}
ssldone = true;
if (TRACING(TRACE_AUTH)) {
SecEntity.Display(eDest);
}
}
if (!DoingLogin) {
// Re-invocations triggered by the bridge have lp==0
// In this case we keep track of a different request state
if (lp) {
// This is an invocation that was triggered by a socket event
// Read all the data that is available, throw it into the buffer
if ((rc = getDataOneShot(BuffAvailable())) < 0) {
// Error -> exit
return -1;
}
// If we need more bytes, let's wait for another invokation
if (BuffUsed() < ResumeBytes) return 1;
} else
CurrentReq.reqstate++;
}
DoingLogin = false;
// Read the next request header, that is, read until a double CRLF is found
if (!CurrentReq.headerok) {
// Read as many lines as possible into the buffer. An empty line breaks
while ((rc = BuffgetLine(tmpline)) > 0) {
TRACE(DEBUG, " rc:" << rc << " got hdr line: " << tmpline.c_str());
if ((rc == 2) && (tmpline.length() > 1) && (tmpline[rc - 1] == '\n')) {
CurrentReq.headerok = true;
TRACE(DEBUG, " rc:" << rc << " detected header end.");
break;
}
if (CurrentReq.request == CurrentReq.rtUnset) {
TRACE(DEBUG, " Parsing first line: " << tmpline.c_str());
int result = CurrentReq.parseFirstLine((char *)tmpline.c_str(), rc);
if (result < 0) {
TRACE(DEBUG, " Parsing of first line failed with " << result);
return -1;
}
}
else
CurrentReq.parseLine((char *)tmpline.c_str(), rc);
}
// Here we have CurrentReq loaded with the header, or its relevant fields
if (!CurrentReq.headerok) {
TRACEI(REQ, " rc:" << rc << "Header not yet complete.");
// Here a subtle error condition. IF we failed reading a line AND the buffer
// has a reasonable amount of data available THEN we consider the header
// as corrupted and shutdown the client
if ((rc <= 0) && (BuffUsed() >= 16384)) {
TRACEI(ALL, "Corrupted header detected, or line too long. Disconnecting client.");
return -1;
}
if (CurrentReq.reqstate > 0)
CurrentReq.reqstate--;
// Waiting for more data
return 1;
}
}
// If we are in self-redirect mode, then let's do it
// Do selfredirect only with 'simple' requests, otherwise poor clients may misbehave
if (ishttps && ssldone && selfhttps2http &&
( (CurrentReq.request == XrdHttpReq::rtGET) || (CurrentReq.request == XrdHttpReq::rtPUT) ||
(CurrentReq.request == XrdHttpReq::rtPROPFIND)) ) {
char hash[512];
time_t timenow = time(0);
calcHashes(hash, CurrentReq.resource.c_str(), (kXR_int16) CurrentReq.request,
&SecEntity,
timenow,
secretkey);
if (hash[0]) {
// Workaround... delete the previous opaque information
if (CurrentReq.opaque) {
delete CurrentReq.opaque;
CurrentReq.opaque = 0;
}
TRACEI(REQ, " rc:" << rc << " self-redirecting to http with security token.");
XrdOucString dest = "Location: http://";
// Here I should put the IP addr of the server
// We have to recompute it here because we don't know to which
// interface the client had connected to
struct sockaddr_storage sa;
socklen_t sl = sizeof(sa);
getsockname(this->Link->AddrInfo()->SockFD(), (struct sockaddr*)&sa, &sl);
// now get it back and print it
char buf[256];
bool ok = false;
switch (sa.ss_family) {
case AF_INET:
if (inet_ntop(AF_INET, &(((sockaddr_in*)&sa)->sin_addr), buf, INET_ADDRSTRLEN)) {
if (Addr_str) free(Addr_str);
Addr_str = strdup(buf);
ok = true;
}
break;
case AF_INET6:
if (inet_ntop(AF_INET6, &(((sockaddr_in6*)&sa)->sin6_addr), buf, INET6_ADDRSTRLEN)) {
if (Addr_str) free(Addr_str);
Addr_str = (char *)malloc(strlen(buf)+3);
strcpy(Addr_str, "[");
strcat(Addr_str, buf);
strcat(Addr_str, "]");
ok = true;
}
break;
default:
TRACEI(REQ, " Can't recognize the address family of the local host.");
}
if (ok) {
dest += Addr_str;
dest += ":";
dest += Port_str;
dest += CurrentReq.resource.c_str();
TRACEI(REQ," rc:"<<rc<<" self-redirecting to http with security token: '"
<< dest.c_str() << "'");
CurrentReq.appendOpaque(dest, &SecEntity, hash, timenow);
SendSimpleResp(302, NULL, (char *) dest.c_str(), 0, 0, true);
CurrentReq.reset();
return -1;
}
TRACEI(REQ, " rc:" << rc << " Can't perform self-redirection.");
}
else {
TRACEI(ALL, " Could not calculate self-redirection hash");
}
}
// If this is not https, then extract the signed information from the url
// and fill the SecEntity structure as if we were using https
if (!ishttps && !ssldone) {
if (CurrentReq.opaque) {
char * tk = CurrentReq.opaque->Get("xrdhttptk");
// If there is a hash then we use it as authn info
if (tk) {
time_t tim = 0;
char * t = CurrentReq.opaque->Get("xrdhttptime");
if (t) tim = atoi(t);
if (!t) {
TRACEI(REQ, " xrdhttptime not specified. Authentication failed.");
return -1;
}
if (abs(time(0) - tim) > XRHTTP_TK_GRACETIME) {
TRACEI(REQ, " Token expired. Authentication failed.");
return -1;
}
// Fill the Secentity from the fields in the URL:name, vo, host
char *nfo;
nfo = CurrentReq.opaque->Get("xrdhttpvorg");
if (nfo) {
TRACEI(DEBUG, " Setting vorg: " << nfo);
SecEntity.vorg = strdup(nfo);
TRACEI(REQ, " Setting vorg: " << SecEntity.vorg);
}
nfo = CurrentReq.opaque->Get("xrdhttpname");
if (nfo) {
TRACEI(DEBUG, " Setting name: " << nfo);
SecEntity.name = unquote(nfo);
TRACEI(REQ, " Setting name: " << SecEntity.name);
}
nfo = CurrentReq.opaque->Get("xrdhttphost");
if (nfo) {
TRACEI(DEBUG, " Setting host: " << nfo);
if (SecEntity.host) free(SecEntity.host);
SecEntity.host = unquote(nfo);
TRACEI(REQ, " Setting host: " << SecEntity.host);
}
nfo = CurrentReq.opaque->Get("xrdhttpdn");
if (nfo) {
TRACEI(DEBUG, " Setting dn: " << nfo);
SecEntity.moninfo = unquote(nfo);
TRACEI(REQ, " Setting dn: " << SecEntity.moninfo);
}
nfo = CurrentReq.opaque->Get("xrdhttprole");
if (nfo) {
TRACEI(DEBUG, " Setting role: " << nfo);
SecEntity.role = unquote(nfo);
TRACEI(REQ, " Setting role: " << SecEntity.role);
}
nfo = CurrentReq.opaque->Get("xrdhttpgrps");
if (nfo) {
TRACEI(DEBUG, " Setting grps: " << nfo);
SecEntity.grps = unquote(nfo);
TRACEI(REQ, " Setting grps: " << SecEntity.grps);
}
nfo = CurrentReq.opaque->Get("xrdhttpendorsements");
if (nfo) {
TRACEI(DEBUG, " Setting endorsements: " << nfo);
SecEntity.endorsements = unquote(nfo);
TRACEI(REQ, " Setting endorsements: " << SecEntity.endorsements);
}
nfo = CurrentReq.opaque->Get("xrdhttpcredslen");
if (nfo) {
TRACEI(DEBUG, " Setting credslen: " << nfo);
char *s1 = unquote(nfo);
if (s1 && s1[0]) {
SecEntity.credslen = atoi(s1);
TRACEI(REQ, " Setting credslen: " << SecEntity.credslen);
}
if (s1) free(s1);
}
if (SecEntity.credslen) {
nfo = CurrentReq.opaque->Get("xrdhttpcreds");
if (nfo) {
TRACEI(DEBUG, " Setting creds: " << nfo);
SecEntity.creds = unquote(nfo);
TRACEI(REQ, " Setting creds: " << SecEntity.creds);
}
}
char hash[512];
calcHashes(hash, CurrentReq.resource.c_str(), (kXR_int16) CurrentReq.request,
&SecEntity,
tim,
secretkey);
if (compareHash(hash, tk)) {
TRACEI(REQ, " Invalid tk '" << tk << "' != '" << hash << "'(calculated). Authentication failed.");
return -1;
}
} else {
// Client is plain http. If we have a secret key then we reject it
if (secretkey) {
TRACEI(ALL, " Rejecting plain http with no valid token as we have a secretkey.");
return -1;
}
}
} else {
// Client is plain http. If we have a secret key then we reject it
if (secretkey) {
TRACEI(ALL, " Rejecting plain http with no valid token as we have a secretkey.");
return -1;
}
}
ssldone = true;
}
// Now we have everything that is needed to try the login
// Remember that if there is an exthandler then it has the responsibility
// for authorization in the paths that it manages
if (!Bridge && !FindMatchingExtHandler(CurrentReq)) {
if (SecEntity.name)
Bridge = XrdXrootd::Bridge::Login(&CurrentReq, Link, &SecEntity, SecEntity.name, ishttps ? "https" : "http");
else
Bridge = XrdXrootd::Bridge::Login(&CurrentReq, Link, &SecEntity, "unknown", ishttps ? "https" : "http");
if (!Bridge) {
TRACEI(REQ, " Authorization failed.");
return -1;
}
// Let the bridge process the login, and then reinvoke us
DoingLogin = true;
return 0;
}
// Compute and send the response. This may involve further reading from the socket
rc = CurrentReq.ProcessHTTPReq();
if (rc < 0)
CurrentReq.reset();
TRACEI(REQ, "Process is exiting rc:" << rc);
return rc;
}
/******************************************************************************/
/* R e c y c l e */
/******************************************************************************/
#undef TRACELINK
#define TRACELINK Link
void XrdHttpProtocol::Recycle(XrdLink *lp, int csec, const char *reason) {
// Release all appendages
//
Cleanup();
// Set fields to starting point (debugging mostly)
//
Reset();
// Push ourselves on the stack
//
ProtStack.Push(&ProtLink);
}
int XrdHttpProtocol::Stats(char *buff, int blen, int do_sync) {
// Synchronize statistics if need be
//
// if (do_sync) {
//
// SI->statsMutex.Lock();
// SI->readCnt += numReads;
// cumReads += numReads;
// numReads = 0;
// SI->prerCnt += numReadP;
// cumReadP += numReadP;
// numReadP = 0;
// SI->rvecCnt += numReadV;
// cumReadV += numReadV;
// numReadV = 0;
// SI->rsegCnt += numSegsV;
// cumSegsV += numSegsV;
// numSegsV = 0;
// SI->writeCnt += numWrites;
// cumWrites += numWrites;
// numWrites = 0;
// SI->statsMutex.UnLock();
// }
//
// // Now return the statistics
// //
// return SI->Stats(buff, blen, do_sync);
return 0;
}
/******************************************************************************/
/* C o n f i g */
/******************************************************************************/
#define TS_Xeq(x,m) (!strcmp(x,var)) GoNo = m(Config)
//#define TS_Xeq3(x,m) (!strcmp(x,var)) GoNo = m(Config, ConfigFN, myEnv)
#define TS_Xeq3(x,m) (!strcmp(x,var)) GoNo = m(Config, extHIVec)
#define HTTPS_ALERT(x,y,z) httpsspec = true;\
if (xrdctx && httpsmode == hsmAuto && (z || xrdctx->x509Verify())) \
eDest.Say("Config http." x " overrides the xrd." y " directive.")
int XrdHttpProtocol::Config(const char *ConfigFN, XrdOucEnv *myEnv) {
XrdOucEnv cfgEnv;
XrdOucStream Config(&eDest, getenv("XRDINSTANCE"), &cfgEnv, "=====> ");
std::vector<extHInfo> extHIVec;
char *var;
int cfgFD, GoNo, NoGo = 0, ismine;
// Initialize our custom BIO type.
if (!m_bio_type) {
#if OPENSSL_VERSION_NUMBER < 0x10100000L
m_bio_type = (26|0x0400|0x0100);
m_bio_method = static_cast<BIO_METHOD*>(OPENSSL_malloc(sizeof(BIO_METHOD)));
if (m_bio_method) {
memset(m_bio_method, '\0', sizeof(BIO_METHOD));
m_bio_method->type = m_bio_type;
m_bio_method->bwrite = BIO_XrdLink_write;
m_bio_method->bread = BIO_XrdLink_read;
m_bio_method->create = BIO_XrdLink_create;
m_bio_method->destroy = BIO_XrdLink_destroy;
m_bio_method->ctrl = BIO_XrdLink_ctrl;
}
#else
// OpenSSL 1.1 has an internal counter for generating unique types.
// We'll switch to that when widely available.
m_bio_type = BIO_get_new_index();
m_bio_method = BIO_meth_new(m_bio_type, "xrdhttp-bio-method");
if (m_bio_method) {
BIO_meth_set_write(m_bio_method, BIO_XrdLink_write);
BIO_meth_set_read(m_bio_method, BIO_XrdLink_read);
BIO_meth_set_create(m_bio_method, BIO_XrdLink_create);
BIO_meth_set_destroy(m_bio_method, BIO_XrdLink_destroy);
BIO_meth_set_ctrl(m_bio_method, BIO_XrdLink_ctrl);
}
#endif
}
// If we have a tls context record whether it configured for verification
// so that we can provide meaningful error and warning messages.
//
xrdctxVer = xrdctx && xrdctx->x509Verify();
// 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);
static const char *cvec[] = { "*** http protocol config:", 0 };
Config.Capture(cvec);
// Process items
//
while ((var = Config.GetMyFirstWord())) {
if ((ismine = !strncmp("http.", var, 5)) && var[5]) var += 5;
if (ismine) {
if TS_Xeq("trace", xtrace);
else if TS_Xeq("cert", xsslcert);