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/*
* DEBUG: section 75 WHOIS protocol
* AUTHOR: Duane Wessels, Kostas Anagnostakis
*
* SQUID Web Proxy Cache http://www.squid-cache.org/
* ----------------------------------------------------------
*
* Squid is the result of efforts by numerous individuals from
* the Internet community; see the CONTRIBUTORS file for full
* details. Many organizations have provided support for Squid's
* development; see the SPONSORS file for full details. Squid is
* Copyrighted (C) 2001 by the Regents of the University of
* California; see the COPYRIGHT file for full details. Squid
* incorporates software developed and/or copyrighted by other
* sources; see the CREDITS file for full details.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
*
*/
#include "squid.h"
#include "comm.h"
#include "comm/Write.h"
#include "errorpage.h"
#include "FwdState.h"
#include "HttpReply.h"
#include "HttpRequest.h"
#include "HttpRequest.h"
#include "SquidConfig.h"
#include "StatCounters.h"
#include "Store.h"
#include "tools.h"
#if HAVE_ERRNO_H
#include <errno.h>
#endif
#define WHOIS_PORT 43
class WhoisState
{
public:
~WhoisState();
void readReply(const Comm::ConnectionPointer &, char *aBuffer, size_t aBufferLength, comm_err_t flag, int xerrno);
void setReplyToOK(StoreEntry *sentry);
StoreEntry *entry;
HttpRequest *request;
FwdState::Pointer fwd;
char buf[BUFSIZ+1]; /* readReply adds terminating NULL */
bool dataWritten;
};
static CLCB whoisClose;
static CTCB whoisTimeout;
static IOCB whoisReadReply;
/* PUBLIC */
CBDATA_TYPE(WhoisState);
WhoisState::~WhoisState()
{
fwd = NULL; // refcounted
}
static void
whoisWriteComplete(const Comm::ConnectionPointer &, char *buf, size_t size, comm_err_t flag, int xerrno, void *data)
{
xfree(buf);
}
void
whoisStart(FwdState * fwd)
{
WhoisState *p;
char *buf;
size_t l;
CBDATA_INIT_TYPE(WhoisState);
p = cbdataAlloc(WhoisState);
p->request = fwd->request;
p->entry = fwd->entry;
p->fwd = fwd;
p->dataWritten = false;
p->entry->lock();
comm_add_close_handler(fwd->serverConnection()->fd, whoisClose, p);
l = p->request->urlpath.size() + 3;
buf = (char *)xmalloc(l);
String str_print=p->request->urlpath.substr(1,p->request->urlpath.size());
snprintf(buf, l, SQUIDSTRINGPH"\r\n", SQUIDSTRINGPRINT(str_print));
AsyncCall::Pointer writeCall = commCbCall(5,5, "whoisWriteComplete",
CommIoCbPtrFun(whoisWriteComplete, p));
Comm::Write(fwd->serverConnection(), buf, strlen(buf), writeCall, NULL);
AsyncCall::Pointer readCall = commCbCall(5,4, "whoisReadReply",
CommIoCbPtrFun(whoisReadReply, p));
comm_read(fwd->serverConnection(), p->buf, BUFSIZ, readCall);
AsyncCall::Pointer timeoutCall = commCbCall(5, 4, "whoisTimeout",
CommTimeoutCbPtrFun(whoisTimeout, p));
commSetConnTimeout(fwd->serverConnection(), Config.Timeout.read, timeoutCall);
}
/* PRIVATE */
static void
whoisTimeout(const CommTimeoutCbParams &io)
{
WhoisState *p = static_cast<WhoisState *>(io.data);
debugs(75, 3, HERE << io.conn << ", URL " << p->entry->url());
io.conn->close();
}
static void
whoisReadReply(const Comm::ConnectionPointer &conn, char *buf, size_t len, comm_err_t flag, int xerrno, void *data)
{
WhoisState *p = (WhoisState *)data;
p->readReply(conn, buf, len, flag, xerrno);
}
void
WhoisState::setReplyToOK(StoreEntry *sentry)
{
HttpReply *reply = new HttpReply;
sentry->buffer();
reply->setHeaders(Http::scOkay, "Gatewaying", "text/plain", -1, -1, -2);
sentry->replaceHttpReply(reply);
}
void
WhoisState::readReply(const Comm::ConnectionPointer &conn, char *aBuffer, size_t aBufferLength, comm_err_t flag, int xerrno)
{
/* Bail out early on COMM_ERR_CLOSING - close handlers will tidy up for us */
if (flag == COMM_ERR_CLOSING)
return;
aBuffer[aBufferLength] = '\0';
debugs(75, 3, HERE << conn << " read " << aBufferLength << " bytes");
debugs(75, 5, "{" << aBuffer << "}");
if (flag != COMM_OK) {
debugs(50, 2, HERE << conn << ": read failure: " << xstrerror() << ".");
if (ignoreErrno(errno)) {
AsyncCall::Pointer call = commCbCall(5,4, "whoisReadReply",
CommIoCbPtrFun(whoisReadReply, this));
comm_read(conn, aBuffer, BUFSIZ, call);
} else {
ErrorState *err = new ErrorState(ERR_READ_ERROR, Http::scInternalServerError, fwd->request);
err->xerrno = xerrno;
fwd->fail(err);
conn->close();
}
return;
}
if (aBufferLength > 0) {
if (!dataWritten)
setReplyToOK(entry);
kb_incr(&(statCounter.server.all.kbytes_in), aBufferLength);
kb_incr(&(statCounter.server.http.kbytes_in), aBufferLength);
/* No range support, we always grab it all */
dataWritten = true;
entry->append(aBuffer, aBufferLength);
entry->flush();
AsyncCall::Pointer call = commCbCall(5,4, "whoisReadReply",
CommIoCbPtrFun(whoisReadReply, this));
comm_read(conn, aBuffer, BUFSIZ, call);
return;
}
/* no bytes read. stop reading */
entry->timestampsSet();
entry->flush();
if (!EBIT_TEST(entry->flags, RELEASE_REQUEST))
entry->setPublicKey();
fwd->complete();
debugs(75, 3, "whoisReadReply: Done: " << entry->url());
conn->close();
}
static void
whoisClose(const CommCloseCbParams ¶ms)
{
WhoisState *p = (WhoisState *)params.data;
debugs(75, 3, "whoisClose: FD " << params.fd);
p->entry->unlock();
cbdataFree(p);
}
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