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gecko/netwerk/protocol/ftp/nsFtpConnectionThread.cpp
Dan Witte c4091d7694 Back out Bug 536324 part 3.
2010-08-30 13:20:39 -07:00

2314 lines
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:set tw=80 ts=4 sts=4 sw=4 et cin: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Bradley Baetz <bbaetz@student.usyd.edu.au>
* Darin Fisher <darin@meer.net>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include <limits.h>
#include <ctype.h>
#include "prprf.h"
#include "prlog.h"
#include "prtime.h"
#include "nsIOService.h"
#include "nsFTPChannel.h"
#include "nsFtpConnectionThread.h"
#include "nsFtpControlConnection.h"
#include "nsFtpProtocolHandler.h"
#include "ftpCore.h"
#include "netCore.h"
#include "nsCRT.h"
#include "nsEscape.h"
#include "nsMimeTypes.h"
#include "nsNetUtil.h"
#include "nsThreadUtils.h"
#include "nsStreamUtils.h"
#include "nsICacheService.h"
#include "nsIURL.h"
#include "nsISocketTransport.h"
#include "nsIStreamListenerTee.h"
#include "nsIPrefService.h"
#include "nsIPrefBranch.h"
#include "nsIStringBundle.h"
#include "nsAuthInformationHolder.h"
#include "nsICharsetConverterManager.h"
#if defined(PR_LOGGING)
extern PRLogModuleInfo* gFTPLog;
#endif
#define LOG(args) PR_LOG(gFTPLog, PR_LOG_DEBUG, args)
#define LOG_ALWAYS(args) PR_LOG(gFTPLog, PR_LOG_ALWAYS, args)
NS_IMPL_ISUPPORTS_INHERITED4(nsFtpState,
nsBaseContentStream,
nsIInputStreamCallback,
nsITransportEventSink,
nsICacheListener,
nsIRequestObserver)
nsFtpState::nsFtpState()
: nsBaseContentStream(PR_TRUE)
, mState(FTP_INIT)
, mNextState(FTP_S_USER)
, mKeepRunning(PR_TRUE)
, mReceivedControlData(PR_FALSE)
, mTryingCachedControl(PR_FALSE)
, mRETRFailed(PR_FALSE)
, mFileSize(LL_MAXUINT)
, mServerType(FTP_GENERIC_TYPE)
, mAction(GET)
, mAnonymous(PR_TRUE)
, mRetryPass(PR_FALSE)
, mStorReplyReceived(PR_FALSE)
, mInternalError(NS_OK)
, mReconnectAndLoginAgain(PR_FALSE)
, mPort(21)
, mAddressChecked(PR_FALSE)
, mServerIsIPv6(PR_FALSE)
, mControlStatus(NS_OK)
{
LOG_ALWAYS(("FTP:(%x) nsFtpState created", this));
// make sure handler stays around
NS_ADDREF(gFtpHandler);
}
nsFtpState::~nsFtpState()
{
LOG_ALWAYS(("FTP:(%x) nsFtpState destroyed", this));
// release reference to handler
nsFtpProtocolHandler *handler = gFtpHandler;
NS_RELEASE(handler);
}
// nsIInputStreamCallback implementation
NS_IMETHODIMP
nsFtpState::OnInputStreamReady(nsIAsyncInputStream *aInStream)
{
LOG(("FTP:(%p) data stream ready\n", this));
// We are receiving a notification from our data stream, so just forward it
// on to our stream callback.
if (HasPendingCallback())
DispatchCallbackSync();
return NS_OK;
}
void
nsFtpState::OnControlDataAvailable(const char *aData, PRUint32 aDataLen)
{
LOG(("FTP:(%p) control data available [%u]\n", this, aDataLen));
mControlConnection->WaitData(this); // queue up another call
if (!mReceivedControlData) {
// parameter can be null cause the channel fills them in.
OnTransportStatus(nsnull, NS_NET_STATUS_BEGIN_FTP_TRANSACTION, 0, 0);
mReceivedControlData = PR_TRUE;
}
// Sometimes we can get two responses in the same packet, eg from LIST.
// So we need to parse the response line by line
nsCString buffer = mControlReadCarryOverBuf;
// Clear the carryover buf - if we still don't have a line, then it will
// be reappended below
mControlReadCarryOverBuf.Truncate();
buffer.Append(aData, aDataLen);
const char* currLine = buffer.get();
while (*currLine && mKeepRunning) {
PRInt32 eolLength = strcspn(currLine, CRLF);
PRInt32 currLineLength = strlen(currLine);
// if currLine is empty or only contains CR or LF, then bail. we can
// sometimes get an ODA event with the full response line + CR without
// the trailing LF. the trailing LF might come in the next ODA event.
// because we are happy enough to process a response line ending only
// in CR, we need to take care to discard the extra LF (bug 191220).
if (eolLength == 0 && currLineLength <= 1)
break;
if (eolLength == currLineLength) {
mControlReadCarryOverBuf.Assign(currLine);
break;
}
// Append the current segment, including the LF
nsCAutoString line;
PRInt32 crlfLength = 0;
if ((currLineLength > eolLength) &&
(currLine[eolLength] == nsCRT::CR) &&
(currLine[eolLength+1] == nsCRT::LF)) {
crlfLength = 2; // CR +LF
} else {
crlfLength = 1; // + LF or CR
}
line.Assign(currLine, eolLength + crlfLength);
// Does this start with a response code?
PRBool startNum = (line.Length() >= 3 &&
isdigit(line[0]) &&
isdigit(line[1]) &&
isdigit(line[2]));
if (mResponseMsg.IsEmpty()) {
// If we get here, then we know that we have a complete line, and
// that it is the first one
NS_ASSERTION(line.Length() > 4 && startNum,
"Read buffer doesn't include response code");
mResponseCode = atoi(PromiseFlatCString(Substring(line,0,3)).get());
}
mResponseMsg.Append(line);
// This is the last line if its 3 numbers followed by a space
if (startNum && line[3] == ' ') {
// yup. last line, let's move on.
if (mState == mNextState) {
NS_ERROR("ftp read state mixup");
mInternalError = NS_ERROR_FAILURE;
mState = FTP_ERROR;
} else {
mState = mNextState;
}
nsCOMPtr<nsIFTPEventSink> ftpSink;
mChannel->GetFTPEventSink(ftpSink);
if (ftpSink)
ftpSink->OnFTPControlLog(PR_TRUE, mResponseMsg.get());
nsresult rv = Process();
mResponseMsg.Truncate();
if (NS_FAILED(rv)) {
CloseWithStatus(rv);
return;
}
}
currLine = currLine + eolLength + crlfLength;
}
}
void
nsFtpState::OnControlError(nsresult status)
{
NS_ASSERTION(NS_FAILED(status), "expecting error condition");
LOG(("FTP:(%p) CC(%p) error [%x was-cached=%u]\n",
this, mControlConnection.get(), status, mTryingCachedControl));
mControlStatus = status;
if (mReconnectAndLoginAgain && NS_SUCCEEDED(mInternalError)) {
mReconnectAndLoginAgain = PR_FALSE;
mAnonymous = PR_FALSE;
mControlStatus = NS_OK;
Connect();
} else if (mTryingCachedControl && NS_SUCCEEDED(mInternalError)) {
mTryingCachedControl = PR_FALSE;
Connect();
} else {
CloseWithStatus(status);
}
}
nsresult
nsFtpState::EstablishControlConnection()
{
NS_ASSERTION(!mControlConnection, "we already have a control connection");
nsresult rv;
LOG(("FTP:(%x) trying cached control\n", this));
// Look to see if we can use a cached control connection:
nsFtpControlConnection *connection = nsnull;
// Don't use cached control if anonymous (bug #473371)
if (!mChannel->HasLoadFlag(nsIRequest::LOAD_ANONYMOUS))
gFtpHandler->RemoveConnection(mChannel->URI(), &connection);
if (connection) {
mControlConnection.swap(connection);
if (mControlConnection->IsAlive())
{
// set stream listener of the control connection to be us.
mControlConnection->WaitData(this);
// read cached variables into us.
mServerType = mControlConnection->mServerType;
mPassword = mControlConnection->mPassword;
mPwd = mControlConnection->mPwd;
mTryingCachedControl = PR_TRUE;
// we're already connected to this server, skip login.
mState = FTP_S_PASV;
mResponseCode = 530; // assume the control connection was dropped.
mControlStatus = NS_OK;
mReceivedControlData = PR_FALSE; // For this request, we have not.
// if we succeed, return. Otherwise, we need to create a transport
rv = mControlConnection->Connect(mChannel->ProxyInfo(), this);
if (NS_SUCCEEDED(rv))
return rv;
}
LOG(("FTP:(%p) cached CC(%p) is unusable\n", this,
mControlConnection.get()));
mControlConnection->WaitData(nsnull);
mControlConnection = nsnull;
}
LOG(("FTP:(%p) creating CC\n", this));
mState = FTP_READ_BUF;
mNextState = FTP_S_USER;
nsCAutoString host;
rv = mChannel->URI()->GetAsciiHost(host);
if (NS_FAILED(rv))
return rv;
mControlConnection = new nsFtpControlConnection(host, mPort);
if (!mControlConnection)
return NS_ERROR_OUT_OF_MEMORY;
rv = mControlConnection->Connect(mChannel->ProxyInfo(), this);
if (NS_FAILED(rv)) {
LOG(("FTP:(%p) CC(%p) failed to connect [rv=%x]\n", this,
mControlConnection.get(), rv));
mControlConnection = nsnull;
return rv;
}
return mControlConnection->WaitData(this);
}
void
nsFtpState::MoveToNextState(FTP_STATE nextState)
{
if (NS_FAILED(mInternalError)) {
mState = FTP_ERROR;
LOG(("FTP:(%x) FAILED (%x)\n", this, mInternalError));
} else {
mState = FTP_READ_BUF;
mNextState = nextState;
}
}
nsresult
nsFtpState::Process()
{
nsresult rv = NS_OK;
PRBool processingRead = PR_TRUE;
while (mKeepRunning && processingRead) {
switch (mState) {
case FTP_COMMAND_CONNECT:
KillControlConnection();
LOG(("FTP:(%p) establishing CC", this));
mInternalError = EstablishControlConnection(); // sets mState
if (NS_FAILED(mInternalError)) {
mState = FTP_ERROR;
LOG(("FTP:(%p) FAILED\n", this));
} else {
LOG(("FTP:(%p) SUCCEEDED\n", this));
}
break;
case FTP_READ_BUF:
LOG(("FTP:(%p) Waiting for CC(%p)\n", this,
mControlConnection.get()));
processingRead = PR_FALSE;
break;
case FTP_ERROR: // xx needs more work to handle dropped control connection cases
if ((mTryingCachedControl && mResponseCode == 530 &&
mInternalError == NS_ERROR_FTP_PASV) ||
(mResponseCode == 425 &&
mInternalError == NS_ERROR_FTP_PASV)) {
// The user was logged out during an pasv operation
// we want to restart this request with a new control
// channel.
mState = FTP_COMMAND_CONNECT;
} else if (mResponseCode == 421 &&
mInternalError != NS_ERROR_FTP_LOGIN) {
// The command channel dropped for some reason.
// Fire it back up, unless we were trying to login
// in which case the server might just be telling us
// that the max number of users has been reached...
mState = FTP_COMMAND_CONNECT;
} else if (mAnonymous &&
mInternalError == NS_ERROR_FTP_LOGIN) {
// If the login was anonymous, and it failed, try again with a username
// Don't reuse old control connection, see #386167
mAnonymous = PR_FALSE;
mState = FTP_COMMAND_CONNECT;
} else {
LOG(("FTP:(%x) FTP_ERROR - calling StopProcessing\n", this));
rv = StopProcessing();
NS_ASSERTION(NS_SUCCEEDED(rv), "StopProcessing failed.");
processingRead = PR_FALSE;
}
break;
case FTP_COMPLETE:
LOG(("FTP:(%x) COMPLETE\n", this));
rv = StopProcessing();
NS_ASSERTION(NS_SUCCEEDED(rv), "StopProcessing failed.");
processingRead = PR_FALSE;
break;
// USER
case FTP_S_USER:
rv = S_user();
if (NS_FAILED(rv))
mInternalError = NS_ERROR_FTP_LOGIN;
MoveToNextState(FTP_R_USER);
break;
case FTP_R_USER:
mState = R_user();
if (FTP_ERROR == mState)
mInternalError = NS_ERROR_FTP_LOGIN;
break;
// PASS
case FTP_S_PASS:
rv = S_pass();
if (NS_FAILED(rv))
mInternalError = NS_ERROR_FTP_LOGIN;
MoveToNextState(FTP_R_PASS);
break;
case FTP_R_PASS:
mState = R_pass();
if (FTP_ERROR == mState)
mInternalError = NS_ERROR_FTP_LOGIN;
break;
// ACCT
case FTP_S_ACCT:
rv = S_acct();
if (NS_FAILED(rv))
mInternalError = NS_ERROR_FTP_LOGIN;
MoveToNextState(FTP_R_ACCT);
break;
case FTP_R_ACCT:
mState = R_acct();
if (FTP_ERROR == mState)
mInternalError = NS_ERROR_FTP_LOGIN;
break;
// SYST
case FTP_S_SYST:
rv = S_syst();
if (NS_FAILED(rv))
mInternalError = NS_ERROR_FTP_LOGIN;
MoveToNextState(FTP_R_SYST);
break;
case FTP_R_SYST:
mState = R_syst();
if (FTP_ERROR == mState)
mInternalError = NS_ERROR_FTP_LOGIN;
break;
// TYPE
case FTP_S_TYPE:
rv = S_type();
if (NS_FAILED(rv))
mInternalError = rv;
MoveToNextState(FTP_R_TYPE);
break;
case FTP_R_TYPE:
mState = R_type();
if (FTP_ERROR == mState)
mInternalError = NS_ERROR_FAILURE;
break;
// CWD
case FTP_S_CWD:
rv = S_cwd();
if (NS_FAILED(rv))
mInternalError = NS_ERROR_FTP_CWD;
MoveToNextState(FTP_R_CWD);
break;
case FTP_R_CWD:
mState = R_cwd();
if (FTP_ERROR == mState)
mInternalError = NS_ERROR_FTP_CWD;
break;
// LIST
case FTP_S_LIST:
rv = S_list();
if (rv == NS_ERROR_NOT_RESUMABLE) {
mInternalError = rv;
} else if (NS_FAILED(rv)) {
mInternalError = NS_ERROR_FTP_CWD;
}
MoveToNextState(FTP_R_LIST);
break;
case FTP_R_LIST:
mState = R_list();
if (FTP_ERROR == mState)
mInternalError = NS_ERROR_FAILURE;
break;
// SIZE
case FTP_S_SIZE:
rv = S_size();
if (NS_FAILED(rv))
mInternalError = rv;
MoveToNextState(FTP_R_SIZE);
break;
case FTP_R_SIZE:
mState = R_size();
if (FTP_ERROR == mState)
mInternalError = NS_ERROR_FAILURE;
break;
// REST
case FTP_S_REST:
rv = S_rest();
if (NS_FAILED(rv))
mInternalError = rv;
MoveToNextState(FTP_R_REST);
break;
case FTP_R_REST:
mState = R_rest();
if (FTP_ERROR == mState)
mInternalError = NS_ERROR_FAILURE;
break;
// MDTM
case FTP_S_MDTM:
rv = S_mdtm();
if (NS_FAILED(rv))
mInternalError = rv;
MoveToNextState(FTP_R_MDTM);
break;
case FTP_R_MDTM:
mState = R_mdtm();
// Don't want to overwrite a more explicit status code
if (FTP_ERROR == mState && NS_SUCCEEDED(mInternalError))
mInternalError = NS_ERROR_FAILURE;
break;
// RETR
case FTP_S_RETR:
rv = S_retr();
if (NS_FAILED(rv))
mInternalError = rv;
MoveToNextState(FTP_R_RETR);
break;
case FTP_R_RETR:
mState = R_retr();
if (FTP_ERROR == mState)
mInternalError = NS_ERROR_FAILURE;
break;
// STOR
case FTP_S_STOR:
rv = S_stor();
if (NS_FAILED(rv))
mInternalError = rv;
MoveToNextState(FTP_R_STOR);
break;
case FTP_R_STOR:
mState = R_stor();
if (FTP_ERROR == mState)
mInternalError = NS_ERROR_FAILURE;
break;
// PASV
case FTP_S_PASV:
rv = S_pasv();
if (NS_FAILED(rv))
mInternalError = NS_ERROR_FTP_PASV;
MoveToNextState(FTP_R_PASV);
break;
case FTP_R_PASV:
mState = R_pasv();
if (FTP_ERROR == mState)
mInternalError = NS_ERROR_FTP_PASV;
break;
// PWD
case FTP_S_PWD:
rv = S_pwd();
if (NS_FAILED(rv))
mInternalError = NS_ERROR_FTP_PWD;
MoveToNextState(FTP_R_PWD);
break;
case FTP_R_PWD:
mState = R_pwd();
if (FTP_ERROR == mState)
mInternalError = NS_ERROR_FTP_PWD;
break;
default:
;
}
}
return rv;
}
///////////////////////////////////
// STATE METHODS
///////////////////////////////////
nsresult
nsFtpState::S_user() {
// some servers on connect send us a 421 or 521. (84525) (141784)
if ((mResponseCode == 421) || (mResponseCode == 521))
return NS_ERROR_FAILURE;
nsresult rv;
nsCAutoString usernameStr("USER ");
mResponseMsg = "";
if (mAnonymous) {
mReconnectAndLoginAgain = PR_TRUE;
usernameStr.AppendLiteral("anonymous");
} else {
mReconnectAndLoginAgain = PR_FALSE;
if (mUsername.IsEmpty()) {
// No prompt for anonymous requests (bug #473371)
if (mChannel->HasLoadFlag(nsIRequest::LOAD_ANONYMOUS))
return NS_ERROR_FAILURE;
nsCOMPtr<nsIAuthPrompt2> prompter;
NS_QueryAuthPrompt2(static_cast<nsIChannel*>(mChannel),
getter_AddRefs(prompter));
if (!prompter)
return NS_ERROR_NOT_INITIALIZED;
nsRefPtr<nsAuthInformationHolder> info =
new nsAuthInformationHolder(nsIAuthInformation::AUTH_HOST,
EmptyString(),
EmptyCString());
PRBool retval;
rv = prompter->PromptAuth(mChannel, nsIAuthPrompt2::LEVEL_NONE,
info, &retval);
// if the user canceled or didn't supply a username we want to fail
if (NS_FAILED(rv) || !retval || info->User().IsEmpty())
return NS_ERROR_FAILURE;
mUsername = info->User();
mPassword = info->Password();
}
// XXX Is UTF-8 the best choice?
AppendUTF16toUTF8(mUsername, usernameStr);
}
usernameStr.Append(CRLF);
return SendFTPCommand(usernameStr);
}
FTP_STATE
nsFtpState::R_user() {
mReconnectAndLoginAgain = PR_FALSE;
if (mResponseCode/100 == 3) {
// send off the password
return FTP_S_PASS;
}
if (mResponseCode/100 == 2) {
// no password required, we're already logged in
return FTP_S_SYST;
}
if (mResponseCode/100 == 5) {
// problem logging in. typically this means the server
// has reached it's user limit.
return FTP_ERROR;
}
// LOGIN FAILED
return FTP_ERROR;
}
nsresult
nsFtpState::S_pass() {
nsresult rv;
nsCAutoString passwordStr("PASS ");
mResponseMsg = "";
if (mAnonymous) {
if (!mPassword.IsEmpty()) {
// XXX Is UTF-8 the best choice?
AppendUTF16toUTF8(mPassword, passwordStr);
} else {
nsXPIDLCString anonPassword;
PRBool useRealEmail = PR_FALSE;
nsCOMPtr<nsIPrefBranch> prefs =
do_GetService(NS_PREFSERVICE_CONTRACTID);
if (prefs) {
rv = prefs->GetBoolPref("advanced.mailftp", &useRealEmail);
if (NS_SUCCEEDED(rv) && useRealEmail) {
prefs->GetCharPref("network.ftp.anonymous_password",
getter_Copies(anonPassword));
}
}
if (!anonPassword.IsEmpty()) {
passwordStr.AppendASCII(anonPassword);
} else {
// We need to default to a valid email address - bug 101027
// example.com is reserved (rfc2606), so use that
passwordStr.AppendLiteral("mozilla@example.com");
}
}
} else {
if (mPassword.IsEmpty() || mRetryPass) {
// No prompt for anonymous requests (bug #473371)
if (mChannel->HasLoadFlag(nsIRequest::LOAD_ANONYMOUS))
return NS_ERROR_FAILURE;
nsCOMPtr<nsIAuthPrompt2> prompter;
NS_QueryAuthPrompt2(static_cast<nsIChannel*>(mChannel),
getter_AddRefs(prompter));
if (!prompter)
return NS_ERROR_NOT_INITIALIZED;
nsRefPtr<nsAuthInformationHolder> info =
new nsAuthInformationHolder(nsIAuthInformation::AUTH_HOST |
nsIAuthInformation::ONLY_PASSWORD,
EmptyString(),
EmptyCString());
info->SetUserInternal(mUsername);
PRBool retval;
rv = prompter->PromptAuth(mChannel, nsIAuthPrompt2::LEVEL_NONE,
info, &retval);
// we want to fail if the user canceled. Note here that if they want
// a blank password, we will pass it along.
if (NS_FAILED(rv) || !retval)
return NS_ERROR_FAILURE;
mPassword = info->Password();
}
// XXX Is UTF-8 the best choice?
AppendUTF16toUTF8(mPassword, passwordStr);
}
passwordStr.Append(CRLF);
return SendFTPCommand(passwordStr);
}
FTP_STATE
nsFtpState::R_pass() {
if (mResponseCode/100 == 3) {
// send account info
return FTP_S_ACCT;
}
if (mResponseCode/100 == 2) {
// logged in
return FTP_S_SYST;
}
if (mResponseCode == 503) {
// start over w/ the user command.
// note: the password was successful, and it's stored in mPassword
mRetryPass = PR_FALSE;
return FTP_S_USER;
}
if (mResponseCode/100 == 5 || mResponseCode==421) {
// There is no difference between a too-many-users error,
// a wrong-password error, or any other sort of error
if (!mAnonymous)
mRetryPass = PR_TRUE;
return FTP_ERROR;
}
// unexpected response code
return FTP_ERROR;
}
nsresult
nsFtpState::S_pwd() {
return SendFTPCommand(NS_LITERAL_CSTRING("PWD" CRLF));
}
FTP_STATE
nsFtpState::R_pwd() {
if (mResponseCode/100 != 2)
return FTP_ERROR;
nsCAutoString respStr(mResponseMsg);
PRInt32 pos = respStr.FindChar('"');
if (pos > -1) {
respStr.Cut(0, pos+1);
pos = respStr.FindChar('"');
if (pos > -1) {
respStr.Truncate(pos);
if (mServerType == FTP_VMS_TYPE)
ConvertDirspecFromVMS(respStr);
if (respStr.Last() != '/')
respStr.Append('/');
mPwd = respStr;
}
}
return FTP_S_TYPE;
}
nsresult
nsFtpState::S_syst() {
return SendFTPCommand(NS_LITERAL_CSTRING("SYST" CRLF));
}
FTP_STATE
nsFtpState::R_syst() {
if (mResponseCode/100 == 2) {
if (( mResponseMsg.Find("L8") > -1) ||
( mResponseMsg.Find("UNIX") > -1) ||
( mResponseMsg.Find("BSD") > -1) ||
( mResponseMsg.Find("MACOS Peter's Server") > -1) ||
( mResponseMsg.Find("MACOS WebSTAR FTP") > -1) ||
( mResponseMsg.Find("MVS") > -1) ||
( mResponseMsg.Find("OS/390") > -1) ||
( mResponseMsg.Find("OS/400") > -1)) {
mServerType = FTP_UNIX_TYPE;
} else if (( mResponseMsg.Find("WIN32", PR_TRUE) > -1) ||
( mResponseMsg.Find("windows", PR_TRUE) > -1)) {
mServerType = FTP_NT_TYPE;
} else if (mResponseMsg.Find("OS/2", PR_TRUE) > -1) {
mServerType = FTP_OS2_TYPE;
} else if (mResponseMsg.Find("VMS", PR_TRUE) > -1) {
mServerType = FTP_VMS_TYPE;
} else {
NS_ERROR("Server type list format unrecognized.");
// Guessing causes crashes.
// (Of course, the parsing code should be more robust...)
nsCOMPtr<nsIStringBundleService> bundleService =
do_GetService(NS_STRINGBUNDLE_CONTRACTID);
if (!bundleService)
return FTP_ERROR;
nsCOMPtr<nsIStringBundle> bundle;
nsresult rv = bundleService->CreateBundle(NECKO_MSGS_URL,
getter_AddRefs(bundle));
if (NS_FAILED(rv))
return FTP_ERROR;
PRUnichar* ucs2Response = ToNewUnicode(mResponseMsg);
const PRUnichar *formatStrings[1] = { ucs2Response };
NS_NAMED_LITERAL_STRING(name, "UnsupportedFTPServer");
nsXPIDLString formattedString;
rv = bundle->FormatStringFromName(name.get(), formatStrings, 1,
getter_Copies(formattedString));
nsMemory::Free(ucs2Response);
if (NS_FAILED(rv))
return FTP_ERROR;
// TODO(darin): this code should not be dictating UI like this!
nsCOMPtr<nsIPrompt> prompter;
mChannel->GetCallback(prompter);
if (prompter)
prompter->Alert(nsnull, formattedString.get());
// since we just alerted the user, clear mResponseMsg,
// which is displayed to the user.
mResponseMsg = "";
return FTP_ERROR;
}
return FTP_S_PWD;
}
if (mResponseCode/100 == 5) {
// server didn't like the SYST command. Probably (500, 501, 502)
// No clue. We will just hope it is UNIX type server.
mServerType = FTP_UNIX_TYPE;
return FTP_S_PWD;
}
return FTP_ERROR;
}
nsresult
nsFtpState::S_acct() {
return SendFTPCommand(NS_LITERAL_CSTRING("ACCT noaccount" CRLF));
}
FTP_STATE
nsFtpState::R_acct() {
if (mResponseCode/100 == 2)
return FTP_S_SYST;
return FTP_ERROR;
}
nsresult
nsFtpState::S_type() {
return SendFTPCommand(NS_LITERAL_CSTRING("TYPE I" CRLF));
}
FTP_STATE
nsFtpState::R_type() {
if (mResponseCode/100 != 2)
return FTP_ERROR;
return FTP_S_PASV;
}
nsresult
nsFtpState::S_cwd() {
nsCAutoString cwdStr;
if (mAction != PUT)
cwdStr = mPath;
if (cwdStr.IsEmpty() || cwdStr.First() != '/')
cwdStr.Insert(mPwd,0);
if (mServerType == FTP_VMS_TYPE)
ConvertDirspecToVMS(cwdStr);
cwdStr.Insert("CWD ",0);
cwdStr.Append(CRLF);
return SendFTPCommand(cwdStr);
}
FTP_STATE
nsFtpState::R_cwd() {
if (mResponseCode/100 == 2) {
if (mAction == PUT)
return FTP_S_STOR;
return FTP_S_LIST;
}
return FTP_ERROR;
}
nsresult
nsFtpState::S_size() {
nsCAutoString sizeBuf(mPath);
if (sizeBuf.IsEmpty() || sizeBuf.First() != '/')
sizeBuf.Insert(mPwd,0);
if (mServerType == FTP_VMS_TYPE)
ConvertFilespecToVMS(sizeBuf);
sizeBuf.Insert("SIZE ",0);
sizeBuf.Append(CRLF);
return SendFTPCommand(sizeBuf);
}
FTP_STATE
nsFtpState::R_size() {
if (mResponseCode/100 == 2) {
PR_sscanf(mResponseMsg.get() + 4, "%llu", &mFileSize);
mChannel->SetContentLength64(mFileSize);
}
// We may want to be able to resume this
return FTP_S_MDTM;
}
nsresult
nsFtpState::S_mdtm() {
nsCAutoString mdtmBuf(mPath);
if (mdtmBuf.IsEmpty() || mdtmBuf.First() != '/')
mdtmBuf.Insert(mPwd,0);
if (mServerType == FTP_VMS_TYPE)
ConvertFilespecToVMS(mdtmBuf);
mdtmBuf.Insert("MDTM ",0);
mdtmBuf.Append(CRLF);
return SendFTPCommand(mdtmBuf);
}
FTP_STATE
nsFtpState::R_mdtm() {
if (mResponseCode == 213) {
mResponseMsg.Cut(0,4);
mResponseMsg.Trim(" \t\r\n");
// yyyymmddhhmmss
if (mResponseMsg.Length() != 14) {
NS_ASSERTION(mResponseMsg.Length() == 14, "Unknown MDTM response");
} else {
mModTime = mResponseMsg;
// Save lastModified time for downloaded files.
nsCAutoString timeString;
PRInt32 error;
PRExplodedTime exTime;
mResponseMsg.Mid(timeString, 0, 4);
exTime.tm_year = timeString.ToInteger(&error, 10);
mResponseMsg.Mid(timeString, 4, 2);
exTime.tm_month = timeString.ToInteger(&error, 10) - 1; //january = 0
mResponseMsg.Mid(timeString, 6, 2);
exTime.tm_mday = timeString.ToInteger(&error, 10);
mResponseMsg.Mid(timeString, 8, 2);
exTime.tm_hour = timeString.ToInteger(&error, 10);
mResponseMsg.Mid(timeString, 10, 2);
exTime.tm_min = timeString.ToInteger(&error, 10);
mResponseMsg.Mid(timeString, 12, 2);
exTime.tm_sec = timeString.ToInteger(&error, 10);
exTime.tm_usec = 0;
exTime.tm_params.tp_gmt_offset = 0;
exTime.tm_params.tp_dst_offset = 0;
PR_NormalizeTime(&exTime, PR_GMTParameters);
exTime.tm_params = PR_LocalTimeParameters(&exTime);
PRTime time = PR_ImplodeTime(&exTime);
(void)mChannel->SetLastModifiedTime(time);
}
}
nsCString entityID;
entityID.Truncate();
entityID.AppendInt(PRInt64(mFileSize));
entityID.Append('/');
entityID.Append(mModTime);
mChannel->SetEntityID(entityID);
// We weren't asked to resume
if (!mChannel->ResumeRequested())
return FTP_S_RETR;
//if (our entityID == supplied one (if any))
if (mSuppliedEntityID.IsEmpty() || entityID.Equals(mSuppliedEntityID))
return FTP_S_REST;
mInternalError = NS_ERROR_ENTITY_CHANGED;
mResponseMsg.Truncate();
return FTP_ERROR;
}
nsresult
nsFtpState::SetContentType()
{
// FTP directory URLs don't always end in a slash. Make sure they do.
// This check needs to be here rather than a more obvious place
// (e.g. LIST command processing) so that it ensures the terminating
// slash is appended for the new request case, as well as the case
// where the URL is being loaded from the cache.
if (!mPath.IsEmpty() && mPath.Last() != '/') {
nsCOMPtr<nsIURL> url = (do_QueryInterface(mChannel->URI()));
nsCAutoString filePath;
if(NS_SUCCEEDED(url->GetFilePath(filePath))) {
filePath.Append('/');
url->SetFilePath(filePath);
}
}
return mChannel->SetContentType(
NS_LITERAL_CSTRING(APPLICATION_HTTP_INDEX_FORMAT));
}
nsresult
nsFtpState::S_list() {
nsresult rv = SetContentType();
if (NS_FAILED(rv))
return FTP_ERROR;
rv = mChannel->PushStreamConverter("text/ftp-dir",
APPLICATION_HTTP_INDEX_FORMAT);
if (NS_FAILED(rv)) {
// clear mResponseMsg which is displayed to the user.
// TODO: we should probably set this to something meaningful.
mResponseMsg = "";
return rv;
}
if (mCacheEntry) {
// save off the server type if we are caching.
nsCAutoString serverType;
serverType.AppendInt(mServerType);
mCacheEntry->SetMetaDataElement("servertype", serverType.get());
// open cache entry for writing, and configure it to receive data.
if (NS_FAILED(InstallCacheListener())) {
mCacheEntry->Doom();
mCacheEntry = nsnull;
}
}
// dir listings aren't resumable
NS_ENSURE_TRUE(!mChannel->ResumeRequested(), NS_ERROR_NOT_RESUMABLE);
mChannel->SetEntityID(EmptyCString());
const char *listString;
if (mServerType == FTP_VMS_TYPE) {
listString = "LIST *.*;0" CRLF;
} else {
listString = "LIST" CRLF;
}
return SendFTPCommand(nsDependentCString(listString));
}
FTP_STATE
nsFtpState::R_list() {
if (mResponseCode/100 == 1) {
// OK, time to start reading from the data connection.
if (HasPendingCallback())
mDataStream->AsyncWait(this, 0, 0, CallbackTarget());
return FTP_READ_BUF;
}
if (mResponseCode/100 == 2) {
//(DONE)
mNextState = FTP_COMPLETE;
mDoomCache = PR_FALSE;
return FTP_COMPLETE;
}
return FTP_ERROR;
}
nsresult
nsFtpState::S_retr() {
nsCAutoString retrStr(mPath);
if (retrStr.IsEmpty() || retrStr.First() != '/')
retrStr.Insert(mPwd,0);
if (mServerType == FTP_VMS_TYPE)
ConvertFilespecToVMS(retrStr);
retrStr.Insert("RETR ",0);
retrStr.Append(CRLF);
return SendFTPCommand(retrStr);
}
FTP_STATE
nsFtpState::R_retr() {
if (mResponseCode/100 == 2) {
//(DONE)
mNextState = FTP_COMPLETE;
return FTP_COMPLETE;
}
if (mResponseCode/100 == 1) {
// We're going to grab a file, not a directory. So we need to clear
// any cache entry, otherwise we'll have problems reading it later.
// See bug 122548
if (mCacheEntry) {
(void)mCacheEntry->Doom();
mCacheEntry = nsnull;
}
if (HasPendingCallback())
mDataStream->AsyncWait(this, 0, 0, CallbackTarget());
return FTP_READ_BUF;
}
// These error codes are related to problems with the connection.
// If we encounter any at this point, do not try CWD and abort.
if (mResponseCode == 421 || mResponseCode == 425 || mResponseCode == 426)
return FTP_ERROR;
if (mResponseCode/100 == 5) {
mRETRFailed = PR_TRUE;
return FTP_S_PASV;
}
return FTP_S_CWD;
}
nsresult
nsFtpState::S_rest() {
nsCAutoString restString("REST ");
// The PRInt64 cast is needed to avoid ambiguity
restString.AppendInt(PRInt64(mChannel->StartPos()), 10);
restString.Append(CRLF);
return SendFTPCommand(restString);
}
FTP_STATE
nsFtpState::R_rest() {
if (mResponseCode/100 == 4) {
// If REST fails, then we can't resume
mChannel->SetEntityID(EmptyCString());
mInternalError = NS_ERROR_NOT_RESUMABLE;
mResponseMsg.Truncate();
return FTP_ERROR;
}
return FTP_S_RETR;
}
nsresult
nsFtpState::S_stor() {
NS_ENSURE_STATE(mChannel->UploadStream());
NS_ASSERTION(mAction == PUT, "Wrong state to be here");
nsCOMPtr<nsIURL> url = do_QueryInterface(mChannel->URI());
NS_ASSERTION(url, "I thought you were a nsStandardURL");
nsCAutoString storStr;
url->GetFilePath(storStr);
NS_ASSERTION(!storStr.IsEmpty(), "What does it mean to store a empty path");
// kill the first slash since we want to be relative to CWD.
if (storStr.First() == '/')
storStr.Cut(0,1);
if (mServerType == FTP_VMS_TYPE)
ConvertFilespecToVMS(storStr);
NS_UnescapeURL(storStr);
storStr.Insert("STOR ",0);
storStr.Append(CRLF);
return SendFTPCommand(storStr);
}
FTP_STATE
nsFtpState::R_stor() {
if (mResponseCode/100 == 2) {
//(DONE)
mNextState = FTP_COMPLETE;
mStorReplyReceived = PR_TRUE;
// Call Close() if it was not called in nsFtpState::OnStoprequest()
if (!mUploadRequest && !IsClosed())
Close();
return FTP_COMPLETE;
}
if (mResponseCode/100 == 1) {
LOG(("FTP:(%x) writing on DT\n", this));
return FTP_READ_BUF;
}
mStorReplyReceived = PR_TRUE;
return FTP_ERROR;
}
nsresult
nsFtpState::S_pasv() {
if (!mAddressChecked) {
// Find socket address
mAddressChecked = PR_TRUE;
PR_InitializeNetAddr(PR_IpAddrAny, 0, &mServerAddress);
nsITransport *controlSocket = mControlConnection->Transport();
if (!controlSocket)
return FTP_ERROR;
nsCOMPtr<nsISocketTransport> sTrans = do_QueryInterface(controlSocket);
if (sTrans) {
nsresult rv = sTrans->GetPeerAddr(&mServerAddress);
if (NS_SUCCEEDED(rv)) {
if (!PR_IsNetAddrType(&mServerAddress, PR_IpAddrAny))
mServerIsIPv6 = mServerAddress.raw.family == PR_AF_INET6 &&
!PR_IsNetAddrType(&mServerAddress, PR_IpAddrV4Mapped);
else {
/*
* In case of SOCKS5 remote DNS resolution, we do
* not know the remote IP address. Still, if it is
* an IPV6 host, then the external address of the
* socks server should also be IPv6, and this is the
* self address of the transport.
*/
PRNetAddr selfAddress;
rv = sTrans->GetSelfAddr(&selfAddress);
if (NS_SUCCEEDED(rv))
mServerIsIPv6 = selfAddress.raw.family == PR_AF_INET6
&& !PR_IsNetAddrType(&selfAddress,
PR_IpAddrV4Mapped);
}
}
}
}
const char *string;
if (mServerIsIPv6) {
string = "EPSV" CRLF;
} else {
string = "PASV" CRLF;
}
return SendFTPCommand(nsDependentCString(string));
}
FTP_STATE
nsFtpState::R_pasv() {
if (mResponseCode/100 != 2)
return FTP_ERROR;
nsresult rv;
PRInt32 port;
nsCAutoString responseCopy(mResponseMsg);
char *response = responseCopy.BeginWriting();
char *ptr = response;
// Make sure to ignore the address in the PASV response (bug 370559)
if (mServerIsIPv6) {
// The returned string is of the form
// text (|||ppp|)
// Where '|' can be any single character
char delim;
while (*ptr && *ptr != '(')
ptr++;
if (*ptr++ != '(')
return FTP_ERROR;
delim = *ptr++;
if (!delim || *ptr++ != delim ||
*ptr++ != delim ||
*ptr < '0' || *ptr > '9')
return FTP_ERROR;
port = 0;
do {
port = port * 10 + *ptr++ - '0';
} while (*ptr >= '0' && *ptr <= '9');
if (*ptr++ != delim || *ptr != ')')
return FTP_ERROR;
} else {
// The returned address string can be of the form
// (xxx,xxx,xxx,xxx,ppp,ppp) or
// xxx,xxx,xxx,xxx,ppp,ppp (without parens)
PRInt32 h0, h1, h2, h3, p0, p1;
PRUint32 fields = 0;
// First try with parens
while (*ptr && *ptr != '(')
++ptr;
if (*ptr) {
++ptr;
fields = PR_sscanf(ptr,
"%ld,%ld,%ld,%ld,%ld,%ld",
&h0, &h1, &h2, &h3, &p0, &p1);
}
if (!*ptr || fields < 6) {
// OK, lets try w/o parens
ptr = response;
while (*ptr && *ptr != ',')
++ptr;
if (*ptr) {
// backup to the start of the digits
do {
ptr--;
} while ((ptr >=response) && (*ptr >= '0') && (*ptr <= '9'));
ptr++; // get back onto the numbers
fields = PR_sscanf(ptr,
"%ld,%ld,%ld,%ld,%ld,%ld",
&h0, &h1, &h2, &h3, &p0, &p1);
}
}
NS_ASSERTION(fields == 6, "Can't parse PASV response");
if (fields < 6)
return FTP_ERROR;
port = ((PRInt32) (p0<<8)) + p1;
}
PRBool newDataConn = PR_TRUE;
if (mDataTransport) {
// Reuse this connection only if its still alive, and the port
// is the same
nsCOMPtr<nsISocketTransport> strans = do_QueryInterface(mDataTransport);
if (strans) {
PRInt32 oldPort;
nsresult rv = strans->GetPort(&oldPort);
if (NS_SUCCEEDED(rv)) {
if (oldPort == port) {
PRBool isAlive;
if (NS_SUCCEEDED(strans->IsAlive(&isAlive)) && isAlive)
newDataConn = PR_FALSE;
}
}
}
if (newDataConn) {
mDataTransport->Close(NS_ERROR_ABORT);
mDataTransport = nsnull;
mDataStream = nsnull;
}
}
if (newDataConn) {
// now we know where to connect our data channel
nsCOMPtr<nsISocketTransportService> sts =
do_GetService(NS_SOCKETTRANSPORTSERVICE_CONTRACTID);
if (!sts)
return FTP_ERROR;
nsCOMPtr<nsISocketTransport> strans;
nsCAutoString host;
if (!PR_IsNetAddrType(&mServerAddress, PR_IpAddrAny)) {
char buf[64];
PR_NetAddrToString(&mServerAddress, buf, sizeof(buf));
host.Assign(buf);
} else {
/*
* In case of SOCKS5 remote DNS resolving, the peer address
* fetched previously will be invalid (0.0.0.0): it is unknown
* to us. But we can pass on the original hostname to the
* connect for the data connection.
*/
rv = mChannel->URI()->GetAsciiHost(host);
if (NS_FAILED(rv))
return FTP_ERROR;
}
rv = sts->CreateTransport(nsnull, 0, host,
port, mChannel->ProxyInfo(),
getter_AddRefs(strans)); // the data socket
if (NS_FAILED(rv))
return FTP_ERROR;
mDataTransport = strans;
strans->SetQoSBits(gFtpHandler->GetDataQoSBits());
LOG(("FTP:(%x) created DT (%s:%x)\n", this, host.get(), port));
// hook ourself up as a proxy for status notifications
rv = mDataTransport->SetEventSink(this, NS_GetCurrentThread());
NS_ENSURE_SUCCESS(rv, FTP_ERROR);
if (mAction == PUT) {
NS_ASSERTION(!mRETRFailed, "Failed before uploading");
// nsIUploadChannel requires the upload stream to support ReadSegments.
// therefore, we can open an unbuffered socket output stream.
nsCOMPtr<nsIOutputStream> output;
rv = mDataTransport->OpenOutputStream(nsITransport::OPEN_UNBUFFERED,
0, 0, getter_AddRefs(output));
if (NS_FAILED(rv))
return FTP_ERROR;
// perform the data copy on the socket transport thread. we do this
// because "output" is a socket output stream, so the result is that
// all work will be done on the socket transport thread.
nsCOMPtr<nsIEventTarget> stEventTarget =
do_GetService(NS_SOCKETTRANSPORTSERVICE_CONTRACTID);
if (!stEventTarget)
return FTP_ERROR;
nsCOMPtr<nsIAsyncStreamCopier> copier;
rv = NS_NewAsyncStreamCopier(getter_AddRefs(copier),
mChannel->UploadStream(),
output,
stEventTarget,
PR_TRUE, // upload stream is buffered
PR_FALSE); // output is NOT buffered
if (NS_FAILED(rv))
return FTP_ERROR;
rv = copier->AsyncCopy(this, nsnull);
if (NS_FAILED(rv))
return FTP_ERROR;
// hold a reference to the copier so we can cancel it if necessary.
mUploadRequest = copier;
// update the current working directory before sending the STOR
// command. this is needed since we might be reusing a control
// connection.
return FTP_S_CWD;
}
//
// else, we are reading from the data connection...
//
// open a buffered, asynchronous socket input stream
nsCOMPtr<nsIInputStream> input;
rv = mDataTransport->OpenInputStream(0,
nsIOService::gDefaultSegmentSize,
nsIOService::gDefaultSegmentCount,
getter_AddRefs(input));
NS_ENSURE_SUCCESS(rv, FTP_ERROR);
mDataStream = do_QueryInterface(input);
}
if (mRETRFailed || mPath.IsEmpty() || mPath.Last() == '/')
return FTP_S_CWD;
return FTP_S_SIZE;
}
////////////////////////////////////////////////////////////////////////////////
// nsIRequest methods:
static inline
PRUint32 NowInSeconds()
{
return PRUint32(PR_Now() / PR_USEC_PER_SEC);
}
PRUint32 nsFtpState::mSessionStartTime = NowInSeconds();
/* Is this cache entry valid to use for reading?
* Since we make up an expiration time for ftp, use the following rules:
* (see bug 103726)
*
* LOAD_FROM_CACHE : always use cache entry, even if expired
* LOAD_BYPASS_CACHE : overwrite cache entry
* LOAD_NORMAL|VALIDATE_ALWAYS : overwrite cache entry
* LOAD_NORMAL : honor expiration time
* LOAD_NORMAL|VALIDATE_ONCE_PER_SESSION : overwrite cache entry if first access
* this session, otherwise use cache entry
* even if expired.
* LOAD_NORMAL|VALIDATE_NEVER : always use cache entry, even if expired
*
* Note that in theory we could use the mdtm time on the directory
* In practice, the lack of a timezone plus the general lack of support for that
* on directories means that its not worth it, I suspect. Revisit if we start
* caching files - bbaetz
*/
PRBool
nsFtpState::CanReadCacheEntry()
{
NS_ASSERTION(mCacheEntry, "must have a cache entry");
nsCacheAccessMode access;
nsresult rv = mCacheEntry->GetAccessGranted(&access);
if (NS_FAILED(rv))
return PR_FALSE;
// If I'm not granted read access, then I can't reuse it...
if (!(access & nsICache::ACCESS_READ))
return PR_FALSE;
if (mChannel->HasLoadFlag(nsIRequest::LOAD_FROM_CACHE))
return PR_TRUE;
if (mChannel->HasLoadFlag(nsIRequest::LOAD_BYPASS_CACHE))
return PR_FALSE;
if (mChannel->HasLoadFlag(nsIRequest::VALIDATE_ALWAYS))
return PR_FALSE;
PRUint32 time;
if (mChannel->HasLoadFlag(nsIRequest::VALIDATE_ONCE_PER_SESSION)) {
rv = mCacheEntry->GetLastModified(&time);
if (NS_FAILED(rv))
return PR_FALSE;
return (mSessionStartTime > time);
}
if (mChannel->HasLoadFlag(nsIRequest::VALIDATE_NEVER))
return PR_TRUE;
// OK, now we just check the expiration time as usual
rv = mCacheEntry->GetExpirationTime(&time);
if (NS_FAILED(rv))
return PR_FALSE;
return (NowInSeconds() <= time);
}
nsresult
nsFtpState::InstallCacheListener()
{
NS_ASSERTION(mCacheEntry, "must have a cache entry");
nsCOMPtr<nsIOutputStream> out;
mCacheEntry->OpenOutputStream(0, getter_AddRefs(out));
NS_ENSURE_STATE(out);
nsCOMPtr<nsIStreamListenerTee> tee =
do_CreateInstance(NS_STREAMLISTENERTEE_CONTRACTID);
NS_ENSURE_STATE(tee);
nsresult rv = tee->Init(mChannel->StreamListener(), out, nsnull);
NS_ENSURE_SUCCESS(rv, rv);
mChannel->SetStreamListener(tee);
return NS_OK;
}
nsresult
nsFtpState::OpenCacheDataStream()
{
NS_ASSERTION(mCacheEntry, "must have a cache entry");
// Get a transport to the cached data...
nsCOMPtr<nsIInputStream> input;
mCacheEntry->OpenInputStream(0, getter_AddRefs(input));
NS_ENSURE_STATE(input);
nsCOMPtr<nsIStreamTransportService> sts =
do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID);
NS_ENSURE_STATE(sts);
nsCOMPtr<nsITransport> transport;
sts->CreateInputTransport(input, -1, -1, PR_TRUE,
getter_AddRefs(transport));
NS_ENSURE_STATE(transport);
nsresult rv = transport->SetEventSink(this, NS_GetCurrentThread());
NS_ENSURE_SUCCESS(rv, rv);
// Open a non-blocking, buffered input stream...
nsCOMPtr<nsIInputStream> transportInput;
transport->OpenInputStream(0,
nsIOService::gDefaultSegmentSize,
nsIOService::gDefaultSegmentCount,
getter_AddRefs(transportInput));
NS_ENSURE_STATE(transportInput);
mDataStream = do_QueryInterface(transportInput);
NS_ENSURE_STATE(mDataStream);
mDataTransport = transport;
return NS_OK;
}
nsresult
nsFtpState::Init(nsFtpChannel *channel)
{
// parameter validation
NS_ASSERTION(channel, "FTP: needs a channel");
mChannel = channel; // a straight ref ptr to the channel
mKeepRunning = PR_TRUE;
mSuppliedEntityID = channel->EntityID();
if (channel->UploadStream())
mAction = PUT;
nsresult rv;
nsCAutoString path;
nsCOMPtr<nsIURL> url = do_QueryInterface(mChannel->URI());
if (url) {
rv = url->GetFilePath(path);
} else {
rv = mChannel->URI()->GetPath(path);
}
if (NS_FAILED(rv))
return rv;
// Skip leading slash
char *fwdPtr = path.BeginWriting();
if (fwdPtr && (*fwdPtr == '/'))
fwdPtr++;
if (*fwdPtr != '\0') {
// now unescape it... %xx reduced inline to resulting character
PRInt32 len = NS_UnescapeURL(fwdPtr);
mPath.Assign(fwdPtr, len);
if (IsUTF8(mPath)) {
nsCAutoString originCharset;
rv = mChannel->URI()->GetOriginCharset(originCharset);
if (NS_SUCCEEDED(rv) && !originCharset.EqualsLiteral("UTF-8"))
ConvertUTF8PathToCharset(originCharset);
}
#ifdef DEBUG
if (mPath.FindCharInSet(CRLF) >= 0)
NS_ERROR("NewURI() should've prevented this!!!");
#endif
}
// pull any username and/or password out of the uri
nsCAutoString uname;
rv = mChannel->URI()->GetUsername(uname);
if (NS_FAILED(rv))
return rv;
if (!uname.IsEmpty() && !uname.EqualsLiteral("anonymous")) {
mAnonymous = PR_FALSE;
CopyUTF8toUTF16(NS_UnescapeURL(uname), mUsername);
// return an error if we find a CR or LF in the username
if (uname.FindCharInSet(CRLF) >= 0)
return NS_ERROR_MALFORMED_URI;
}
nsCAutoString password;
rv = mChannel->URI()->GetPassword(password);
if (NS_FAILED(rv))
return rv;
CopyUTF8toUTF16(NS_UnescapeURL(password), mPassword);
// return an error if we find a CR or LF in the password
if (mPassword.FindCharInSet(CRLF) >= 0)
return NS_ERROR_MALFORMED_URI;
// setup the connection cache key
PRInt32 port;
rv = mChannel->URI()->GetPort(&port);
if (NS_FAILED(rv))
return rv;
if (port > 0)
mPort = port;
return NS_OK;
}
void
nsFtpState::Connect()
{
mState = FTP_COMMAND_CONNECT;
mNextState = FTP_S_USER;
nsresult rv = Process();
// check for errors.
if (NS_FAILED(rv)) {
LOG(("FTP:Process() failed: %x\n", rv));
mInternalError = NS_ERROR_FAILURE;
mState = FTP_ERROR;
CloseWithStatus(mInternalError);
}
}
void
nsFtpState::KillControlConnection()
{
mControlReadCarryOverBuf.Truncate(0);
mAddressChecked = PR_FALSE;
mServerIsIPv6 = PR_FALSE;
// if everything went okay, save the connection.
// FIX: need a better way to determine if we can cache the connections.
// there are some errors which do not mean that we need to kill the connection
// e.g. fnf.
if (!mControlConnection)
return;
// kill the reference to ourselves in the control connection.
mControlConnection->WaitData(nsnull);
if (NS_SUCCEEDED(mInternalError) &&
NS_SUCCEEDED(mControlStatus) &&
mControlConnection->IsAlive()) {
LOG_ALWAYS(("FTP:(%p) caching CC(%p)", this, mControlConnection.get()));
// Store connection persistent data
mControlConnection->mServerType = mServerType;
mControlConnection->mPassword = mPassword;
mControlConnection->mPwd = mPwd;
nsresult rv = NS_OK;
// Don't cache controlconnection if anonymous (bug #473371)
if (!mChannel->HasLoadFlag(nsIRequest::LOAD_ANONYMOUS))
rv = gFtpHandler->InsertConnection(mChannel->URI(),
mControlConnection);
// Can't cache it? Kill it then.
mControlConnection->Disconnect(rv);
} else {
mControlConnection->Disconnect(NS_BINDING_ABORTED);
}
mControlConnection = nsnull;
}
nsresult
nsFtpState::StopProcessing()
{
// Only do this function once.
if (!mKeepRunning)
return NS_OK;
mKeepRunning = PR_FALSE;
LOG_ALWAYS(("FTP:(%x) nsFtpState stopping", this));
#ifdef DEBUG_dougt
printf("FTP Stopped: [response code %d] [response msg follows:]\n%s\n", mResponseCode, mResponseMsg.get());
#endif
if (NS_FAILED(mInternalError) && !mResponseMsg.IsEmpty()) {
// check to see if the control status is bad.
// web shell wont throw an alert. we better:
// XXX(darin): this code should not be dictating UI like this!
nsCOMPtr<nsIPrompt> prompter;
mChannel->GetCallback(prompter);
if (prompter)
prompter->Alert(nsnull, NS_ConvertASCIItoUTF16(mResponseMsg).get());
}
nsresult broadcastErrorCode = mControlStatus;
if (NS_SUCCEEDED(broadcastErrorCode))
broadcastErrorCode = mInternalError;
mInternalError = broadcastErrorCode;
KillControlConnection();
// XXX This can fire before we are done loading data. Is that a problem?
OnTransportStatus(nsnull, NS_NET_STATUS_END_FTP_TRANSACTION, 0, 0);
if (NS_FAILED(broadcastErrorCode))
CloseWithStatus(broadcastErrorCode);
return NS_OK;
}
nsresult
nsFtpState::SendFTPCommand(const nsCSubstring& command)
{
NS_ASSERTION(mControlConnection, "null control connection");
// we don't want to log the password:
nsCAutoString logcmd(command);
if (StringBeginsWith(command, NS_LITERAL_CSTRING("PASS ")))
logcmd = "PASS xxxxx";
LOG(("FTP:(%x) writing \"%s\"\n", this, logcmd.get()));
nsCOMPtr<nsIFTPEventSink> ftpSink;
mChannel->GetFTPEventSink(ftpSink);
if (ftpSink)
ftpSink->OnFTPControlLog(PR_FALSE, logcmd.get());
if (mControlConnection)
return mControlConnection->Write(command);
return NS_ERROR_FAILURE;
}
// Convert a unix-style filespec to VMS format
// /foo/fred/barney/file.txt -> foo:[fred.barney]file.txt
// /foo/file.txt -> foo:[000000]file.txt
void
nsFtpState::ConvertFilespecToVMS(nsCString& fileString)
{
int ntok=1;
char *t, *nextToken;
nsCAutoString fileStringCopy;
// Get a writeable copy we can strtok with.
fileStringCopy = fileString;
t = nsCRT::strtok(fileStringCopy.BeginWriting(), "/", &nextToken);
if (t)
while (nsCRT::strtok(nextToken, "/", &nextToken))
ntok++; // count number of terms (tokens)
LOG(("FTP:(%x) ConvertFilespecToVMS ntok: %d\n", this, ntok));
LOG(("FTP:(%x) ConvertFilespecToVMS from: \"%s\"\n", this, fileString.get()));
if (fileString.First() == '/') {
// absolute filespec
// / -> []
// /a -> a (doesn't really make much sense)
// /a/b -> a:[000000]b
// /a/b/c -> a:[b]c
// /a/b/c/d -> a:[b.c]d
if (ntok == 1) {
if (fileString.Length() == 1) {
// Just a slash
fileString.Truncate();
fileString.AppendLiteral("[]");
} else {
// just copy the name part (drop the leading slash)
fileStringCopy = fileString;
fileString = Substring(fileStringCopy, 1,
fileStringCopy.Length()-1);
}
} else {
// Get another copy since the last one was written to.
fileStringCopy = fileString;
fileString.Truncate();
fileString.Append(nsCRT::strtok(fileStringCopy.BeginWriting(),
"/", &nextToken));
fileString.AppendLiteral(":[");
if (ntok > 2) {
for (int i=2; i<ntok; i++) {
if (i > 2) fileString.Append('.');
fileString.Append(nsCRT::strtok(nextToken,
"/", &nextToken));
}
} else {
fileString.AppendLiteral("000000");
}
fileString.Append(']');
fileString.Append(nsCRT::strtok(nextToken, "/", &nextToken));
}
} else {
// relative filespec
// a -> a
// a/b -> [.a]b
// a/b/c -> [.a.b]c
if (ntok == 1) {
// no slashes, just use the name as is
} else {
// Get another copy since the last one was written to.
fileStringCopy = fileString;
fileString.Truncate();
fileString.AppendLiteral("[.");
fileString.Append(nsCRT::strtok(fileStringCopy.BeginWriting(),
"/", &nextToken));
if (ntok > 2) {
for (int i=2; i<ntok; i++) {
fileString.Append('.');
fileString.Append(nsCRT::strtok(nextToken,
"/", &nextToken));
}
}
fileString.Append(']');
fileString.Append(nsCRT::strtok(nextToken, "/", &nextToken));
}
}
LOG(("FTP:(%x) ConvertFilespecToVMS to: \"%s\"\n", this, fileString.get()));
}
// Convert a unix-style dirspec to VMS format
// /foo/fred/barney/rubble -> foo:[fred.barney.rubble]
// /foo/fred -> foo:[fred]
// /foo -> foo:[000000]
// (null) -> (null)
void
nsFtpState::ConvertDirspecToVMS(nsCString& dirSpec)
{
LOG(("FTP:(%x) ConvertDirspecToVMS from: \"%s\"\n", this, dirSpec.get()));
if (!dirSpec.IsEmpty()) {
if (dirSpec.Last() != '/')
dirSpec.Append('/');
// we can use the filespec routine if we make it look like a file name
dirSpec.Append('x');
ConvertFilespecToVMS(dirSpec);
dirSpec.Truncate(dirSpec.Length()-1);
}
LOG(("FTP:(%x) ConvertDirspecToVMS to: \"%s\"\n", this, dirSpec.get()));
}
// Convert an absolute VMS style dirspec to UNIX format
void
nsFtpState::ConvertDirspecFromVMS(nsCString& dirSpec)
{
LOG(("FTP:(%x) ConvertDirspecFromVMS from: \"%s\"\n", this, dirSpec.get()));
if (dirSpec.IsEmpty()) {
dirSpec.Insert('.', 0);
} else {
dirSpec.Insert('/', 0);
dirSpec.ReplaceSubstring(":[", "/");
dirSpec.ReplaceChar('.', '/');
dirSpec.ReplaceChar(']', '/');
}
LOG(("FTP:(%x) ConvertDirspecFromVMS to: \"%s\"\n", this, dirSpec.get()));
}
//-----------------------------------------------------------------------------
NS_IMETHODIMP
nsFtpState::OnTransportStatus(nsITransport *transport, nsresult status,
PRUint64 progress, PRUint64 progressMax)
{
// Mix signals from both the control and data connections.
// Ignore data transfer events on the control connection.
if (mControlConnection && transport == mControlConnection->Transport()) {
switch (status) {
case NS_NET_STATUS_RESOLVING_HOST:
case NS_NET_STATUS_CONNECTING_TO:
case NS_NET_STATUS_CONNECTED_TO:
break;
default:
return NS_OK;
}
}
// Ignore the progressMax value from the socket. We know the true size of
// the file based on the response from our SIZE request. Additionally, only
// report the max progress based on where we started/resumed.
mChannel->OnTransportStatus(nsnull, status, progress,
mFileSize - mChannel->StartPos());
return NS_OK;
}
//-----------------------------------------------------------------------------
NS_IMETHODIMP
nsFtpState::OnCacheEntryAvailable(nsICacheEntryDescriptor *entry,
nsCacheAccessMode access,
nsresult status)
{
// We may have been closed while we were waiting for this cache entry.
if (IsClosed())
return NS_OK;
if (NS_SUCCEEDED(status) && entry) {
mDoomCache = PR_TRUE;
mCacheEntry = entry;
if (CanReadCacheEntry() && ReadCacheEntry()) {
mState = FTP_READ_CACHE;
return NS_OK;
}
}
Connect();
return NS_OK;
}
//-----------------------------------------------------------------------------
NS_IMETHODIMP
nsFtpState::OnStartRequest(nsIRequest *request, nsISupports *context)
{
mStorReplyReceived = PR_FALSE;
return NS_OK;
}
NS_IMETHODIMP
nsFtpState::OnStopRequest(nsIRequest *request, nsISupports *context,
nsresult status)
{
mUploadRequest = nsnull;
// Close() will be called when reply to STOR command is received
// see bug #389394
if (!mStorReplyReceived)
return NS_OK;
// We're done uploading. Let our consumer know that we're done.
Close();
return NS_OK;
}
//-----------------------------------------------------------------------------
NS_IMETHODIMP
nsFtpState::Available(PRUint32 *result)
{
if (mDataStream)
return mDataStream->Available(result);
return nsBaseContentStream::Available(result);
}
NS_IMETHODIMP
nsFtpState::ReadSegments(nsWriteSegmentFun writer, void *closure,
PRUint32 count, PRUint32 *result)
{
// Insert a thunk here so that the input stream passed to the writer is this
// input stream instead of mDataStream.
if (mDataStream) {
nsWriteSegmentThunk thunk = { this, writer, closure };
return mDataStream->ReadSegments(NS_WriteSegmentThunk, &thunk, count,
result);
}
return nsBaseContentStream::ReadSegments(writer, closure, count, result);
}
NS_IMETHODIMP
nsFtpState::CloseWithStatus(nsresult status)
{
LOG(("FTP:(%p) close [%x]\n", this, status));
// Shutdown the control connection processing if we are being closed with an
// error. Note: This method may be called several times.
if (!IsClosed() && status != NS_BASE_STREAM_CLOSED && NS_FAILED(status)) {
if (NS_SUCCEEDED(mInternalError))
mInternalError = status;
StopProcessing();
}
if (mUploadRequest) {
mUploadRequest->Cancel(NS_ERROR_ABORT);
mUploadRequest = nsnull;
}
if (mDataTransport) {
// Shutdown the data transport.
mDataTransport->Close(NS_ERROR_ABORT);
mDataTransport = nsnull;
}
mDataStream = nsnull;
if (mDoomCache && mCacheEntry)
mCacheEntry->Doom();
mCacheEntry = nsnull;
return nsBaseContentStream::CloseWithStatus(status);
}
void
nsFtpState::OnCallbackPending()
{
// If this is the first call, then see if we could use the cache. If we
// aren't going to read from (or write to) the cache, then just proceed to
// connect to the server.
if (mState == FTP_INIT) {
if (CheckCache()) {
mState = FTP_WAIT_CACHE;
return;
}
if (mCacheEntry && CanReadCacheEntry() && ReadCacheEntry()) {
mState = FTP_READ_CACHE;
return;
}
Connect();
} else if (mDataStream) {
mDataStream->AsyncWait(this, 0, 0, CallbackTarget());
}
}
PRBool
nsFtpState::ReadCacheEntry()
{
NS_ASSERTION(mCacheEntry, "should have a cache entry");
// make sure the channel knows wassup
SetContentType();
nsXPIDLCString serverType;
mCacheEntry->GetMetaDataElement("servertype", getter_Copies(serverType));
nsCAutoString serverNum(serverType.get());
PRInt32 err;
mServerType = serverNum.ToInteger(&err);
mChannel->PushStreamConverter("text/ftp-dir",
APPLICATION_HTTP_INDEX_FORMAT);
mChannel->SetEntityID(EmptyCString());
if (NS_FAILED(OpenCacheDataStream()))
return PR_FALSE;
if (HasPendingCallback())
mDataStream->AsyncWait(this, 0, 0, CallbackTarget());
mDoomCache = PR_FALSE;
return PR_TRUE;
}
PRBool
nsFtpState::CheckCache()
{
// This function is responsible for setting mCacheEntry if there is a cache
// entry that we can use. It returns true if we end up waiting for access
// to the cache.
// In some cases, we don't want to use the cache:
if (mChannel->UploadStream() || mChannel->ResumeRequested())
return PR_FALSE;
nsCOMPtr<nsICacheService> cache = do_GetService(NS_CACHESERVICE_CONTRACTID);
if (!cache)
return PR_FALSE;
nsCOMPtr<nsICacheSession> session;
cache->CreateSession("FTP",
nsICache::STORE_ANYWHERE,
nsICache::STREAM_BASED,
getter_AddRefs(session));
if (!session)
return PR_FALSE;
session->SetDoomEntriesIfExpired(PR_FALSE);
// Set cache access requested:
nsCacheAccessMode accessReq;
if (NS_IsOffline()) {
accessReq = nsICache::ACCESS_READ; // can only read
} else if (mChannel->HasLoadFlag(nsIRequest::LOAD_BYPASS_CACHE)) {
accessReq = nsICache::ACCESS_WRITE; // replace cache entry
} else {
accessReq = nsICache::ACCESS_READ_WRITE; // normal browsing
}
// Check to see if we are not allowed to write to the cache:
if (mChannel->HasLoadFlag(nsIRequest::INHIBIT_CACHING)) {
accessReq &= ~nsICache::ACCESS_WRITE;
if (accessReq == nsICache::ACCESS_NONE)
return PR_FALSE;
}
// Generate cache key (remove trailing #ref if any):
nsCAutoString key;
mChannel->URI()->GetAsciiSpec(key);
PRInt32 pos = key.RFindChar('#');
if (pos != kNotFound)
key.Truncate(pos);
NS_ENSURE_FALSE(key.IsEmpty(), PR_FALSE);
// Try to open a cache entry immediately, but if the cache entry is busy,
// then wait for it to be available.
nsresult rv = session->OpenCacheEntry(key, accessReq, PR_FALSE,
getter_AddRefs(mCacheEntry));
if (NS_SUCCEEDED(rv) && mCacheEntry) {
mDoomCache = PR_TRUE;
return PR_FALSE; // great, we're ready to proceed!
}
if (rv == NS_ERROR_CACHE_WAIT_FOR_VALIDATION) {
rv = session->AsyncOpenCacheEntry(key, accessReq, this);
return NS_SUCCEEDED(rv);
}
return PR_FALSE;
}
nsresult
nsFtpState::ConvertUTF8PathToCharset(const nsACString &aCharset)
{
nsresult rv;
NS_ASSERTION(IsUTF8(mPath), "mPath isn't UTF8 string!");
NS_ConvertUTF8toUTF16 ucsPath(mPath);
nsCAutoString result;
nsCOMPtr<nsICharsetConverterManager> charsetMgr(
do_GetService("@mozilla.org/charset-converter-manager;1", &rv));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIUnicodeEncoder> encoder;
rv = charsetMgr->GetUnicodeEncoder(PromiseFlatCString(aCharset).get(),
getter_AddRefs(encoder));
NS_ENSURE_SUCCESS(rv, rv);
PRInt32 len = ucsPath.Length();
PRInt32 maxlen;
rv = encoder->GetMaxLength(ucsPath.get(), len, &maxlen);
NS_ENSURE_SUCCESS(rv, rv);
char buf[256], *p = buf;
if (PRUint32(maxlen) > sizeof(buf) - 1) {
p = (char *) malloc(maxlen + 1);
if (!p)
return NS_ERROR_OUT_OF_MEMORY;
}
rv = encoder->Convert(ucsPath.get(), &len, p, &maxlen);
if (NS_FAILED(rv))
goto end;
if (rv == NS_ERROR_UENC_NOMAPPING) {
NS_WARNING("unicode conversion failed");
rv = NS_ERROR_UNEXPECTED;
goto end;
}
p[maxlen] = 0;
result.Assign(p);
len = sizeof(buf) - 1;
rv = encoder->Finish(buf, &len);
if (NS_FAILED(rv))
goto end;
buf[len] = 0;
result.Append(buf);
mPath = result;
end:
if (p != buf)
free(p);
return rv;
}
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