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pjs/netwerk/streamconv/converters/nsIndexedToHTML.cpp

649 строки
23 KiB
C++
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** 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@cs.mcgill.ca>
* Christopher A. Aillon <christopher@aillon.com>
*
* 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 "nsIndexedToHTML.h"
#include "nsNetUtil.h"
#include "netCore.h"
#include "nsStringStream.h"
#include "nsIFileURL.h"
#include "nsEscape.h"
#include "nsIDirIndex.h"
#include "prtime.h"
#include "nsDateTimeFormatCID.h"
#include "nsURLHelper.h"
#include "nsCRT.h"
#include "nsIPlatformCharset.h"
#include "nsInt64.h"
NS_IMPL_THREADSAFE_ISUPPORTS4(nsIndexedToHTML,
nsIDirIndexListener,
nsIStreamConverter,
nsIRequestObserver,
nsIStreamListener)
static void ConvertNonAsciiToNCR(const nsAString& in, nsAFlatString& out)
{
nsAString::const_iterator start, end;
in.BeginReading(start);
in.EndReading(end);
out.Truncate();
while (start != end) {
if (*start < 128) {
out.Append(*start++);
} else {
out.AppendLiteral("&#x");
nsAutoString hex;
hex.AppendInt(*start++, 16);
out.Append(hex);
out.Append((PRUnichar)';');
}
}
}
NS_METHOD
nsIndexedToHTML::Create(nsISupports *aOuter, REFNSIID aIID, void **aResult) {
nsresult rv;
if (aOuter)
return NS_ERROR_NO_AGGREGATION;
nsIndexedToHTML* _s = new nsIndexedToHTML();
if (_s == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
rv = _s->QueryInterface(aIID, aResult);
return rv;
}
nsresult
nsIndexedToHTML::Init(nsIStreamListener* aListener) {
nsresult rv = NS_OK;
mListener = aListener;
mDateTime = do_CreateInstance(NS_DATETIMEFORMAT_CONTRACTID, &rv);
nsCOMPtr<nsIStringBundleService> sbs =
do_GetService(NS_STRINGBUNDLE_CONTRACTID, &rv);
if (NS_FAILED(rv)) return rv;
rv = sbs->CreateBundle(NECKO_MSGS_URL, getter_AddRefs(mBundle));
mExpectAbsLoc = PR_FALSE;
return rv;
}
NS_IMETHODIMP
nsIndexedToHTML::Convert(nsIInputStream* aFromStream,
const char* aFromType,
const char* aToType,
nsISupports* aCtxt,
nsIInputStream** res) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsIndexedToHTML::AsyncConvertData(const char *aFromType,
const char *aToType,
nsIStreamListener *aListener,
nsISupports *aCtxt) {
return Init(aListener);
}
NS_IMETHODIMP
nsIndexedToHTML::OnStartRequest(nsIRequest* request, nsISupports *aContext) {
nsresult rv;
nsCOMPtr<nsIChannel> channel = do_QueryInterface(request);
nsCOMPtr<nsIURI> uri;
rv = channel->GetURI(getter_AddRefs(uri));
if (NS_FAILED(rv)) return rv;
channel->SetContentType(NS_LITERAL_CSTRING("text/html"));
mParser = do_CreateInstance("@mozilla.org/dirIndexParser;1",&rv);
if (NS_FAILED(rv)) return rv;
rv = mParser->SetListener(this);
if (NS_FAILED(rv)) return rv;
rv = mParser->OnStartRequest(request, aContext);
if (NS_FAILED(rv)) return rv;
nsCAutoString baseUri,titleUri;
rv = uri->GetAsciiSpec(baseUri);
if (NS_FAILED(rv)) return rv;
titleUri = baseUri;
nsCString parentStr;
// XXX - should be using the 300: line from the parser.
// We can't guarantee that that comes before any entry, so we'd have to
// buffer, and do other painful stuff.
// I'll deal with this when I make the changes to handle welcome messages
// The .. stuff should also come from the lower level protocols, but that
// would muck up the XUL display
// - bbaetz
PRBool isScheme = PR_FALSE;
PRBool isSchemeFile = PR_FALSE;
if (NS_SUCCEEDED(uri->SchemeIs("ftp", &isScheme)) && isScheme) {
// ftp urls don't always end in a /
// make sure they do
// but look out for /%2F as path
nsCAutoString path;
rv = uri->GetPath(path);
if (NS_FAILED(rv)) return rv;
if (baseUri.Last() != '/' && !path.LowerCaseEqualsLiteral("/%2f")) {
baseUri.Append('/');
path.Append('/');
uri->SetPath(path);
}
// strip out the password here, so it doesn't show in the page title
// This is done by the 300: line generation in ftp, but we don't use
// that - see above
nsCAutoString pw;
rv = uri->GetPassword(pw);
if (NS_FAILED(rv)) return rv;
if (!pw.IsEmpty()) {
nsCOMPtr<nsIURI> newUri;
rv = uri->Clone(getter_AddRefs(newUri));
if (NS_FAILED(rv)) return rv;
rv = newUri->SetPassword(EmptyCString());
if (NS_FAILED(rv)) return rv;
rv = newUri->GetAsciiSpec(titleUri);
if (NS_FAILED(rv)) return rv;
if (titleUri.Last() != '/' && !path.LowerCaseEqualsLiteral("/%2f"))
titleUri.Append('/');
}
if (!path.EqualsLiteral("//") && !path.LowerCaseEqualsLiteral("/%2f")) {
rv = uri->Resolve(NS_LITERAL_CSTRING(".."),parentStr);
if (NS_FAILED(rv)) return rv;
}
} else if (NS_SUCCEEDED(uri->SchemeIs("file", &isSchemeFile)) && isSchemeFile) {
nsCOMPtr<nsIFileURL> fileUrl = do_QueryInterface(uri);
nsCOMPtr<nsIFile> file;
rv = fileUrl->GetFile(getter_AddRefs(file));
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsILocalFile> lfile = do_QueryInterface(file, &rv);
if (NS_FAILED(rv)) return rv;
lfile->SetFollowLinks(PR_TRUE);
nsCAutoString url;
rv = net_GetURLSpecFromFile(file, url);
if (NS_FAILED(rv)) return rv;
baseUri.Assign(url);
nsCOMPtr<nsIFile> parent;
rv = file->GetParent(getter_AddRefs(parent));
if (parent && NS_SUCCEEDED(rv)) {
net_GetURLSpecFromFile(parent, url);
if (NS_FAILED(rv)) return rv;
parentStr.Assign(url);
}
// Directory index will be always encoded in UTF-8 if this is file url
rv = mParser->SetEncoding("UTF-8");
NS_ENSURE_SUCCESS(rv, rv);
} else if (NS_SUCCEEDED(uri->SchemeIs("gopher", &isScheme)) && isScheme) {
mExpectAbsLoc = PR_TRUE;
} else if (NS_SUCCEEDED(uri->SchemeIs("jar", &isScheme)) && isScheme) {
nsCAutoString path;
rv = uri->GetPath(path);
if (NS_FAILED(rv)) return rv;
// a top-level jar directory URL is of the form jar:foo.zip!/
// path will be of the form foo.zip!/, and its last two characters
// will be "!/"
//XXX this won't work correctly when the name of the directory being
//XXX displayed ends with "!", but then again, jar: URIs don't deal
//XXX particularly well with such directories anyway
if (!StringEndsWith(path, NS_LITERAL_CSTRING("!/"))) {
rv = uri->Resolve(NS_LITERAL_CSTRING(".."), parentStr);
if (NS_FAILED(rv)) return rv;
}
}
else {
// default behavior for other protocols is to assume the channel's
// URL references a directory ending in '/' -- fixup if necessary.
nsCAutoString path;
rv = uri->GetPath(path);
if (NS_FAILED(rv)) return rv;
if (baseUri.Last() != '/') {
baseUri.Append('/');
path.Append('/');
uri->SetPath(path);
}
if (!path.EqualsLiteral("/")) {
rv = uri->Resolve(NS_LITERAL_CSTRING(".."), parentStr);
if (NS_FAILED(rv)) return rv;
}
}
nsString buffer;
buffer.AssignLiteral("<?xml version=\"1.0\" encoding=\"");
// Get the encoding from the parser
// XXX - this won't work for any encoding set via a 301: line in the
// format - this output stuff would need to move to OnDataAvailable
// for that. However, currently only file:// sends that, and file's HTML
// index mode isn't enabled yet (bug 102812)
nsXPIDLCString encoding;
rv = mParser->GetEncoding(getter_Copies(encoding));
if (NS_FAILED(rv)) return rv;
AppendASCIItoUTF16(encoding, buffer);
buffer.AppendLiteral("\"?>\n"
"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1//EN\" "
"\"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd\">\n");
// Anything but a gopher url needs to end in a /,
// otherwise we end up linking to file:///foo/dirfile
buffer.AppendLiteral("<html xmlns=\"http://www.w3.org/1999/xhtml\">\n<head><title>");
nsXPIDLString title;
if (!mTextToSubURI) {
mTextToSubURI = do_GetService(NS_ITEXTTOSUBURI_CONTRACTID, &rv);
if (NS_FAILED(rv)) return rv;
}
nsXPIDLString unEscapeSpec;
rv = mTextToSubURI->UnEscapeAndConvert(encoding, titleUri.get(),
getter_Copies(unEscapeSpec));
// unescape may fail because
// 1. file URL may be encoded in platform charset for backward compatibility
// 2. query part may not be encoded in UTF-8 (see bug 261929)
// so try the platform's default if this is file url
if (NS_FAILED(rv) && isSchemeFile) {
nsCOMPtr<nsIPlatformCharset> platformCharset(do_GetService(NS_PLATFORMCHARSET_CONTRACTID, &rv));
NS_ENSURE_SUCCESS(rv, rv);
nsCAutoString charset;
rv = platformCharset->GetCharset(kPlatformCharsetSel_FileName, charset);
NS_ENSURE_SUCCESS(rv, rv);
rv = mTextToSubURI->UnEscapeAndConvert(charset.get(), titleUri.get(),
getter_Copies(unEscapeSpec));
}
if (NS_FAILED(rv)) return rv;
nsXPIDLString htmlEscSpec;
htmlEscSpec.Adopt(nsEscapeHTML2(unEscapeSpec.get(),
unEscapeSpec.Length()));
const PRUnichar* formatTitle[] = {
htmlEscSpec.get()
};
rv = mBundle->FormatStringFromName(NS_LITERAL_STRING("DirTitle").get(),
formatTitle,
sizeof(formatTitle)/sizeof(PRUnichar*),
getter_Copies(title));
if (NS_FAILED(rv)) return rv;
// we want to convert string bundle to NCR
// to ensure they're shown in any charsets
nsAutoString strNCR;
ConvertNonAsciiToNCR(title, strNCR);
buffer.Append(strNCR);
buffer.AppendLiteral("</title><base href=\"");
AppendASCIItoUTF16(baseUri, buffer);
buffer.AppendLiteral("\"/>\n"
"<style type=\"text/css\">\n"
"img { border: 0; padding: 0 2px; vertical-align: text-bottom; }\n"
"td { font-family: monospace; padding: 2px 3px; text-align: right; vertical-align: bottom; white-space: pre; }\n"
"td:first-child { text-align: left; padding: 2px 10px 2px 3px; }\n"
"table { border: 0; }\n"
"a.symlink { font-style: italic; }\n"
"</style>\n"
"</head>\n<body>\n<h1>");
const PRUnichar* formatHeading[] = {
htmlEscSpec.get()
};
rv = mBundle->FormatStringFromName(NS_LITERAL_STRING("DirTitle").get(),
formatHeading,
sizeof(formatHeading)/sizeof(PRUnichar*),
getter_Copies(title));
if (NS_FAILED(rv)) return rv;
ConvertNonAsciiToNCR(title, strNCR);
buffer.Append(strNCR);
buffer.AppendLiteral("</h1>\n<hr/><table>\n");
//buffer.AppendLiteral("<tr><th>Name</th><th>Size</th><th>Last modified</th></tr>\n");
if (!parentStr.IsEmpty()) {
nsXPIDLString parentText;
rv = mBundle->GetStringFromName(NS_LITERAL_STRING("DirGoUp").get(),
getter_Copies(parentText));
if (NS_FAILED(rv)) return rv;
ConvertNonAsciiToNCR(parentText, strNCR);
buffer.AppendLiteral("<tr><td colspan=\"3\"><a href=\"");
AppendASCIItoUTF16(parentStr, buffer);
buffer.AppendLiteral("\">");
buffer.Append(strNCR);
buffer.AppendLiteral("</a></td></tr>\n");
}
// Push buffer to the listener now, so the initial HTML will not
// be parsed in OnDataAvailable().
rv = mListener->OnStartRequest(request, aContext);
if (NS_FAILED(rv)) return rv;
// The request may have been canceled, and if that happens, we want to
// suppress calls to OnDataAvailable.
request->GetStatus(&rv);
if (NS_FAILED(rv)) return rv;
rv = FormatInputStream(request, aContext, buffer);
return rv;
}
NS_IMETHODIMP
nsIndexedToHTML::OnStopRequest(nsIRequest* request, nsISupports *aContext,
nsresult aStatus) {
if (NS_SUCCEEDED(aStatus)) {
nsString buffer;
buffer.AssignLiteral("</table><hr/></body></html>\n");
aStatus = FormatInputStream(request, aContext, buffer);
}
mParser->OnStopRequest(request, aContext, aStatus);
mParser = 0;
return mListener->OnStopRequest(request, aContext, aStatus);
}
nsresult
nsIndexedToHTML::FormatInputStream(nsIRequest* aRequest, nsISupports *aContext, const nsAString &aBuffer)
{
nsresult rv = NS_OK;
// set up unicode encoder
if (!mUnicodeEncoder) {
nsXPIDLCString encoding;
rv = mParser->GetEncoding(getter_Copies(encoding));
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsICharsetConverterManager> charsetConverterManager;
charsetConverterManager = do_GetService(NS_CHARSETCONVERTERMANAGER_CONTRACTID, &rv);
rv = charsetConverterManager->GetUnicodeEncoder(encoding.get(),
getter_AddRefs(mUnicodeEncoder));
if (NS_SUCCEEDED(rv))
rv = mUnicodeEncoder->SetOutputErrorBehavior(nsIUnicodeEncoder::kOnError_Replace,
nsnull, (PRUnichar)'?');
}
}
// convert the data with unicode encoder
char *buffer = nsnull;
PRInt32 dstLength;
if (NS_SUCCEEDED(rv)) {
PRInt32 unicharLength = aBuffer.Length();
rv = mUnicodeEncoder->GetMaxLength(PromiseFlatString(aBuffer).get(),
unicharLength, &dstLength);
if (NS_SUCCEEDED(rv)) {
buffer = (char *) nsMemory::Alloc(dstLength);
NS_ENSURE_TRUE(buffer, NS_ERROR_OUT_OF_MEMORY);
rv = mUnicodeEncoder->Convert(PromiseFlatString(aBuffer).get(), &unicharLength,
buffer, &dstLength);
if (NS_SUCCEEDED(rv)) {
PRInt32 finLen = 0;
rv = mUnicodeEncoder->Finish(buffer + dstLength, &finLen);
if (NS_SUCCEEDED(rv))
dstLength += finLen;
}
}
}
// if conversion error then fallback to UTF-8
if (NS_FAILED(rv)) {
rv = NS_OK;
if (buffer) {
nsMemory::Free(buffer);
buffer = nsnull;
}
}
nsCOMPtr<nsIInputStream> inputData;
if (buffer) {
rv = NS_NewCStringInputStream(getter_AddRefs(inputData), Substring(buffer, buffer + dstLength));
nsMemory::Free(buffer);
NS_ENSURE_SUCCESS(rv, rv);
rv = mListener->OnDataAvailable(aRequest, aContext,
inputData, 0, dstLength);
}
else {
NS_ConvertUTF16toUTF8 utf8Buffer(aBuffer);
rv = NS_NewCStringInputStream(getter_AddRefs(inputData), utf8Buffer);
NS_ENSURE_SUCCESS(rv, rv);
rv = mListener->OnDataAvailable(aRequest, aContext,
inputData, 0, utf8Buffer.Length());
}
return (rv);
}
NS_IMETHODIMP
nsIndexedToHTML::OnDataAvailable(nsIRequest *aRequest,
nsISupports *aCtxt,
nsIInputStream* aInput,
PRUint32 aOffset,
PRUint32 aCount) {
return mParser->OnDataAvailable(aRequest, aCtxt, aInput, aOffset, aCount);
}
NS_IMETHODIMP
nsIndexedToHTML::OnIndexAvailable(nsIRequest *aRequest,
nsISupports *aCtxt,
nsIDirIndex *aIndex) {
nsresult rv;
if (!aIndex)
return NS_ERROR_NULL_POINTER;
nsString pushBuffer;
pushBuffer.AppendLiteral("<tr>\n <td><a");
PRUint32 type;
aIndex->GetType(&type);
if (type == nsIDirIndex::TYPE_SYMLINK) {
pushBuffer.AppendLiteral(" class=\"symlink\"");
}
pushBuffer.AppendLiteral(" href=\"");
nsXPIDLCString loc;
aIndex->GetLocation(getter_Copies(loc));
if (!mTextToSubURI) {
mTextToSubURI = do_GetService(NS_ITEXTTOSUBURI_CONTRACTID, &rv);
if (NS_FAILED(rv)) return rv;
}
nsXPIDLCString encoding;
rv = mParser->GetEncoding(getter_Copies(encoding));
if (NS_FAILED(rv)) return rv;
nsXPIDLString unEscapeSpec;
rv = mTextToSubURI->UnEscapeAndConvert(encoding, loc,
getter_Copies(unEscapeSpec));
if (NS_FAILED(rv)) return rv;
// need to escape links
nsCAutoString escapeBuf;
NS_ConvertUTF16toUTF8 utf8UnEscapeSpec(unEscapeSpec);
// now minimally re-escape the location...
PRUint32 escFlags;
// for some protocols, like gopher, we expect the location to be absolute.
// if so, and if the location indeed appears to be a valid URI, then go
// ahead and treat it like one.
if (mExpectAbsLoc &&
NS_SUCCEEDED(net_ExtractURLScheme(utf8UnEscapeSpec, nsnull, nsnull, nsnull))) {
// escape as absolute
escFlags = esc_Forced | esc_OnlyASCII | esc_AlwaysCopy | esc_Minimal;
}
else {
// escape as relative
// esc_Directory is needed for protocols which allow the same name for
// both a directory and a file and distinguish between the two by a
// trailing '/' -- without it, the trailing '/' will be escaped, and
// links from within that directory will be incorrect
escFlags = esc_Forced | esc_OnlyASCII | esc_AlwaysCopy | esc_FileBaseName | esc_Colon | esc_Directory;
}
NS_EscapeURL(utf8UnEscapeSpec.get(), utf8UnEscapeSpec.Length(), escFlags, escapeBuf);
AppendUTF8toUTF16(escapeBuf, pushBuffer);
pushBuffer.AppendLiteral("\"><img src=\"");
switch (type) {
case nsIDirIndex::TYPE_DIRECTORY:
case nsIDirIndex::TYPE_SYMLINK:
pushBuffer.AppendLiteral("resource://gre/res/html/gopher-menu.gif\" alt=\"Directory: ");
break;
case nsIDirIndex::TYPE_FILE:
case nsIDirIndex::TYPE_UNKNOWN:
pushBuffer.AppendLiteral("resource://gre/res/html/gopher-unknown.gif\" alt=\"File: ");
break;
}
pushBuffer.AppendLiteral("\"/>");
nsXPIDLString tmp;
aIndex->GetDescription(getter_Copies(tmp));
PRUnichar* escaped = nsEscapeHTML2(tmp.get(), tmp.Length());
pushBuffer.Append(escaped);
nsMemory::Free(escaped);
pushBuffer.AppendLiteral("</a></td>\n <td>");
PRInt64 size;
aIndex->GetSize(&size);
if (nsUint64(PRUint64(size)) != nsUint64(LL_MAXUINT) &&
type != nsIDirIndex::TYPE_DIRECTORY &&
type != nsIDirIndex::TYPE_SYMLINK) {
nsAutoString sizeString;
FormatSizeString(size, sizeString);
pushBuffer.Append(sizeString);
}
pushBuffer.AppendLiteral("</td>\n <td>");
PRTime t;
aIndex->GetLastModified(&t);
if (t == -1) {
pushBuffer.AppendLiteral("</td>\n <td>");
} else {
nsAutoString formatted;
nsAutoString strNCR; // use NCR to show date in any doc charset
mDateTime->FormatPRTime(nsnull,
kDateFormatShort,
kTimeFormatNone,
t,
formatted);
ConvertNonAsciiToNCR(formatted, strNCR);
pushBuffer.Append(strNCR);
pushBuffer.AppendLiteral("</td>\n <td>");
mDateTime->FormatPRTime(nsnull,
kDateFormatNone,
kTimeFormatSeconds,
t,
formatted);
ConvertNonAsciiToNCR(formatted, strNCR);
pushBuffer.Append(strNCR);
}
pushBuffer.AppendLiteral("</td>\n</tr>\n");
return FormatInputStream(aRequest, aCtxt, pushBuffer);
}
NS_IMETHODIMP
nsIndexedToHTML::OnInformationAvailable(nsIRequest *aRequest,
nsISupports *aCtxt,
const nsAString& aInfo) {
nsAutoString pushBuffer;
PRUnichar* escaped = nsEscapeHTML2(PromiseFlatString(aInfo).get());
if (!escaped)
return NS_ERROR_OUT_OF_MEMORY;
pushBuffer.AppendLiteral("<tr>\n <td>");
pushBuffer.Append(escaped);
nsMemory::Free(escaped);
pushBuffer.AppendLiteral("</td>\n <td></td>\n <td></td>\n <td></td>\n</tr>\n");
return FormatInputStream(aRequest, aCtxt, pushBuffer);
}
void nsIndexedToHTML::FormatSizeString(PRInt64 inSize, nsString& outSizeString)
{
nsInt64 size(inSize);
outSizeString.Truncate();
if (size > nsInt64(0)) {
// round up to the nearest Kilobyte
PRInt64 upperSize = (size + nsInt64(1023)) / nsInt64(1024);
outSizeString.AppendInt(upperSize);
outSizeString.AppendLiteral(" KB");
}
}
nsIndexedToHTML::nsIndexedToHTML() {
}
nsIndexedToHTML::~nsIndexedToHTML() {
}
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