mozilla-central/modules/libjar/nsJARURI.cpp (file symbol)

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "base/basictypes.h"
#include "nsJARURI.h"
#include "nsNetUtil.h"
#include "nsIClassInfoImpl.h"
#include "nsIIOService.h"
#include "nsIStandardURL.h"
#include "nsCRT.h"
#include "nsReadableUtils.h"
#include "nsNetCID.h"
#include "nsIObjectInputStream.h"
#include "nsIObjectOutputStream.h"
#include "nsQueryObject.h"
#include "mozilla/ipc/URIUtils.h"
using namespace mozilla::ipc;
////////////////////////////////////////////////////////////////////////////////
NS_IMPL_CLASSINFO(nsJARURI, nullptr, nsIClassInfo::THREADSAFE, NS_JARURI_CID)
// Empty CI getter. We only need nsIClassInfo for Serialization
NS_IMPL_CI_INTERFACE_GETTER0(nsJARURI)
nsJARURI::nsJARURI() {}
nsJARURI::~nsJARURI() {}
// XXX Why is this threadsafe?
NS_IMPL_ADDREF(nsJARURI)
NS_IMPL_RELEASE(nsJARURI)
NS_INTERFACE_MAP_BEGIN(nsJARURI)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIJARURI)
NS_INTERFACE_MAP_ENTRY(nsIURI)
NS_INTERFACE_MAP_ENTRY(nsIURL)
NS_INTERFACE_MAP_ENTRY(nsIJARURI)
NS_INTERFACE_MAP_ENTRY(nsISerializable)
NS_IMPL_QUERY_CLASSINFO(nsJARURI)
NS_INTERFACE_MAP_ENTRY(nsINestedURI)
NS_INTERFACE_MAP_ENTRY_CONCRETE(nsJARURI)
NS_INTERFACE_MAP_END
nsresult nsJARURI::Init(const char* charsetHint) {
mCharsetHint = charsetHint;
return NS_OK;
}
#define NS_JAR_SCHEME "jar:"_ns
#define NS_JAR_DELIMITER "!/"_ns
#define NS_BOGUS_ENTRY_SCHEME "x:///"_ns
// FormatSpec takes the entry spec (including the "x:///" at the
// beginning) and gives us a full JAR spec.
nsresult nsJARURI::FormatSpec(const nsACString& entrySpec, nsACString& result,
bool aIncludeScheme) {
// The entrySpec MUST start with "x:///"
NS_ASSERTION(StringBeginsWith(entrySpec, NS_BOGUS_ENTRY_SCHEME),
"bogus entry spec");
nsAutoCString fileSpec;
nsresult rv = mJARFile->GetSpec(fileSpec);
if (NS_FAILED(rv)) return rv;
if (aIncludeScheme)
result = NS_JAR_SCHEME;
else
result.Truncate();
result.Append(fileSpec + NS_JAR_DELIMITER +
Substring(entrySpec, 5, entrySpec.Length() - 5));
return NS_OK;
}
nsresult nsJARURI::CreateEntryURL(const nsACString& entryFilename,
const char* charset, nsIURL** url) {
*url = nullptr;
// Flatten the concatenation, just in case. See bug 128288
nsAutoCString spec(NS_BOGUS_ENTRY_SCHEME + entryFilename);
return NS_MutateURI(NS_STANDARDURLMUTATOR_CONTRACTID)
.Apply(&nsIStandardURLMutator::Init, nsIStandardURL::URLTYPE_NO_AUTHORITY,
-1, spec, charset, nullptr, nullptr)
.Finalize(url);
}
////////////////////////////////////////////////////////////////////////////////
// nsISerializable methods:
NS_IMETHODIMP
nsJARURI::Read(nsIObjectInputStream* aStream) {
MOZ_ASSERT_UNREACHABLE("Use nsIURIMutator.read() instead");
return NS_ERROR_NOT_IMPLEMENTED;
}
nsresult nsJARURI::ReadPrivate(nsIObjectInputStream* aInputStream) {
nsresult rv;
nsCOMPtr<nsISupports> supports;
rv = aInputStream->ReadObject(true, getter_AddRefs(supports));
NS_ENSURE_SUCCESS(rv, rv);
mJARFile = do_QueryInterface(supports, &rv);
NS_ENSURE_SUCCESS(rv, rv);
rv = aInputStream->ReadObject(true, getter_AddRefs(supports));
NS_ENSURE_SUCCESS(rv, rv);
mJAREntry = do_QueryInterface(supports);
NS_ENSURE_SUCCESS(rv, rv);
rv = aInputStream->ReadCString(mCharsetHint);
return rv;
}
NS_IMETHODIMP
nsJARURI::Write(nsIObjectOutputStream* aOutputStream) {
nsresult rv;
rv = aOutputStream->WriteCompoundObject(mJARFile, NS_GET_IID(nsIURI), true);
NS_ENSURE_SUCCESS(rv, rv);
rv = aOutputStream->WriteCompoundObject(mJAREntry, NS_GET_IID(nsIURL), true);
NS_ENSURE_SUCCESS(rv, rv);
rv = aOutputStream->WriteStringZ(mCharsetHint.get());
return rv;
}
////////////////////////////////////////////////////////////////////////////////
// nsIURI methods:
NS_IMETHODIMP
nsJARURI::GetSpec(nsACString& aSpec) {
nsAutoCString entrySpec;
mJAREntry->GetSpec(entrySpec);
return FormatSpec(entrySpec, aSpec);
}
NS_IMETHODIMP
nsJARURI::GetSpecIgnoringRef(nsACString& aSpec) {
nsAutoCString entrySpec;
mJAREntry->GetSpecIgnoringRef(entrySpec);
return FormatSpec(entrySpec, aSpec);
}
NS_IMETHODIMP
nsJARURI::GetDisplaySpec(nsACString& aUnicodeSpec) {
return GetSpec(aUnicodeSpec);
}
NS_IMETHODIMP
nsJARURI::GetDisplayHostPort(nsACString& aUnicodeHostPort) {
return GetHostPort(aUnicodeHostPort);
}
NS_IMETHODIMP
nsJARURI::GetDisplayPrePath(nsACString& aPrePath) {
return GetPrePath(aPrePath);
}
NS_IMETHODIMP
nsJARURI::GetDisplayHost(nsACString& aUnicodeHost) {
return GetHost(aUnicodeHost);
}
NS_IMETHODIMP
nsJARURI::GetHasRef(bool* result) { return mJAREntry->GetHasRef(result); }
NS_IMETHODIMP
nsJARURI::GetHasUserPass(bool* result) {
return mJAREntry->GetHasUserPass(result);
}
NS_IMETHODIMP
nsJARURI::GetHasQuery(bool* result) { return mJAREntry->GetHasQuery(result); }
nsresult nsJARURI::SetSpecInternal(const nsACString& aSpec) {
return SetSpecWithBase(aSpec, nullptr);
}
// Queries this list of interfaces. If none match, it queries mURI.
NS_IMPL_NSIURIMUTATOR_ISUPPORTS(nsJARURI::Mutator, nsIURISetters, nsIURIMutator,
nsIURLMutator, nsISerializable,
nsIJARURIMutator)
NS_IMETHODIMP
nsJARURI::Mutator::SetFileName(const nsACString& aFileName,
nsIURIMutator** aMutator) {
if (!mURI) {
return NS_ERROR_NULL_POINTER;
}
if (aMutator) {
nsCOMPtr<nsIURIMutator> mutator = this;
mutator.forget(aMutator);
}
return mURI->SetFileNameInternal(aFileName);
}
NS_IMETHODIMP
nsJARURI::Mutator::SetFileBaseName(const nsACString& aFileBaseName,
nsIURIMutator** aMutator) {
if (!mURI) {
return NS_ERROR_NULL_POINTER;
}
if (aMutator) {
nsCOMPtr<nsIURIMutator> mutator = this;
mutator.forget(aMutator);
}
return mURI->SetFileBaseNameInternal(aFileBaseName);
}
NS_IMETHODIMP
nsJARURI::Mutator::SetFileExtension(const nsACString& aFileExtension,
nsIURIMutator** aMutator) {
if (!mURI) {
return NS_ERROR_NULL_POINTER;
}
if (aMutator) {
nsCOMPtr<nsIURIMutator> mutator = this;
mutator.forget(aMutator);
}
return mURI->SetFileExtensionInternal(aFileExtension);
}
NS_IMETHODIMP
nsJARURI::Mutate(nsIURIMutator** aMutator) {
RefPtr<nsJARURI::Mutator> mutator = new nsJARURI::Mutator();
nsresult rv = mutator->InitFromURI(this);
if (NS_FAILED(rv)) {
return rv;
}
mutator.forget(aMutator);
return NS_OK;
}
nsresult nsJARURI::SetSpecWithBase(const nsACString& aSpec, nsIURI* aBaseURL) {
nsresult rv;
nsCOMPtr<nsIIOService> ioServ(do_GetIOService(&rv));
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString scheme;
rv = ioServ->ExtractScheme(aSpec, scheme);
if (NS_FAILED(rv)) {
// not an absolute URI
if (!aBaseURL) return NS_ERROR_MALFORMED_URI;
RefPtr<nsJARURI> otherJAR = do_QueryObject(aBaseURL);
NS_ENSURE_TRUE(otherJAR, NS_NOINTERFACE);
mJARFile = otherJAR->mJARFile;
nsCOMPtr<nsIURI> entry;
rv = NS_MutateURI(NS_STANDARDURLMUTATOR_CONTRACTID)
.Apply(&nsIStandardURLMutator::Init,
nsIStandardURL::URLTYPE_NO_AUTHORITY, -1, aSpec,
mCharsetHint.get(), otherJAR->mJAREntry, nullptr)
.Finalize(entry);
if (NS_FAILED(rv)) {
return rv;
}
mJAREntry = do_QueryInterface(entry);
if (!mJAREntry) return NS_NOINTERFACE;
return NS_OK;
}
NS_ENSURE_TRUE(scheme.EqualsLiteral("jar"), NS_ERROR_MALFORMED_URI);
nsACString::const_iterator begin, end;
aSpec.BeginReading(begin);
aSpec.EndReading(end);
while (begin != end && *begin != ':') ++begin;
++begin; // now we're past the "jar:"
nsACString::const_iterator delim_begin = begin;
nsACString::const_iterator delim_end = end;
nsACString::const_iterator frag = begin;
if (FindInReadable(NS_JAR_DELIMITER, delim_begin, delim_end)) {
frag = delim_end;
}
while (frag != end && (*frag != '#' && *frag != '?')) {
++frag;
}
if (frag != end) {
// there was a fragment or query, mark that as the end of the URL to scan
end = frag;
}
// Search backward from the end for the "!/" delimiter. Remember, jar URLs
// can nest, e.g.:
// This gets the b.html document from out of the a.jar file, that's
// contained within the bar.jar file.
// Also, the outermost "inner" URI may be a relative URI:
// jar:../relative.jar!/a.html
delim_begin = begin;
delim_end = end;
if (!RFindInReadable(NS_JAR_DELIMITER, delim_begin, delim_end)) {
return NS_ERROR_MALFORMED_URI;
}
rv = ioServ->NewURI(Substring(begin, delim_begin), mCharsetHint.get(),
aBaseURL, getter_AddRefs(mJARFile));
if (NS_FAILED(rv)) return rv;
// skip over any extra '/' chars
while (*delim_end == '/') ++delim_end;
aSpec.EndReading(end); // set to the original 'end'
return SetJAREntry(Substring(delim_end, end));
}
NS_IMETHODIMP
nsJARURI::GetPrePath(nsACString& prePath) {
prePath = NS_JAR_SCHEME;
return NS_OK;
}
NS_IMETHODIMP
nsJARURI::GetScheme(nsACString& aScheme) {
aScheme = "jar";
return NS_OK;
}
nsresult nsJARURI::SetScheme(const nsACString& aScheme) {
// doesn't make sense to set the scheme of a jar: URL
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsJARURI::GetUserPass(nsACString& aUserPass) { return NS_ERROR_FAILURE; }
nsresult nsJARURI::SetUserPass(const nsACString& aUserPass) {
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsJARURI::GetUsername(nsACString& aUsername) { return NS_ERROR_FAILURE; }
nsresult nsJARURI::SetUsername(const nsACString& aUsername) {
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsJARURI::GetPassword(nsACString& aPassword) { return NS_ERROR_FAILURE; }
nsresult nsJARURI::SetPassword(const nsACString& aPassword) {
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsJARURI::GetHostPort(nsACString& aHostPort) { return NS_ERROR_FAILURE; }
nsresult nsJARURI::SetHostPort(const nsACString& aHostPort) {
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsJARURI::GetHost(nsACString& aHost) { return NS_ERROR_FAILURE; }
nsresult nsJARURI::SetHost(const nsACString& aHost) { return NS_ERROR_FAILURE; }
NS_IMETHODIMP
nsJARURI::GetPort(int32_t* aPort) { return NS_ERROR_FAILURE; }
nsresult nsJARURI::SetPort(int32_t aPort) { return NS_ERROR_FAILURE; }
nsresult nsJARURI::GetPathQueryRef(nsACString& aPath) {
nsAutoCString entrySpec;
mJAREntry->GetSpec(entrySpec);
return FormatSpec(entrySpec, aPath, false);
}
nsresult nsJARURI::SetPathQueryRef(const nsACString& aPath) {
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsJARURI::GetAsciiSpec(nsACString& aSpec) {
// XXX Shouldn't this like... make sure it returns ASCII or something?
return GetSpec(aSpec);
}
NS_IMETHODIMP
nsJARURI::GetAsciiHostPort(nsACString& aHostPort) { return NS_ERROR_FAILURE; }
NS_IMETHODIMP
nsJARURI::GetAsciiHost(nsACString& aHost) { return NS_ERROR_FAILURE; }
NS_IMETHODIMP
nsJARURI::Equals(nsIURI* other, bool* result) {
return EqualsInternal(other, eHonorRef, result);
}
NS_IMETHODIMP
nsJARURI::EqualsExceptRef(nsIURI* other, bool* result) {
return EqualsInternal(other, eIgnoreRef, result);
}
// Helper method:
/* virtual */
nsresult nsJARURI::EqualsInternal(nsIURI* other,
nsJARURI::RefHandlingEnum refHandlingMode,
bool* result) {
*result = false;
if (!other) return NS_OK; // not equal
RefPtr<nsJARURI> otherJAR = do_QueryObject(other);
if (!otherJAR) return NS_OK; // not equal
bool equal;
nsresult rv = mJARFile->Equals(otherJAR->mJARFile, &equal);
if (NS_FAILED(rv) || !equal) {
return rv; // not equal
}
return refHandlingMode == eHonorRef
? mJAREntry->Equals(otherJAR->mJAREntry, result)
: mJAREntry->EqualsExceptRef(otherJAR->mJAREntry, result);
}
NS_IMETHODIMP
nsJARURI::SchemeIs(const char* i_Scheme, bool* o_Equals) {
MOZ_ASSERT(o_Equals);
if (!i_Scheme) {
*o_Equals = false;
return NS_OK;
}
*o_Equals = nsCRT::strcasecmp("jar", i_Scheme) == 0;
return NS_OK;
}
nsresult nsJARURI::Clone(nsIURI** result) {
RefPtr<nsJARURI> uri = new nsJARURI();
uri->mJARFile = mJARFile;
uri->mJAREntry = mJAREntry;
uri.forget(result);
return NS_OK;
}
NS_IMETHODIMP
nsJARURI::Resolve(const nsACString& relativePath, nsACString& result) {
nsresult rv;
nsCOMPtr<nsIIOService> ioServ(do_GetIOService(&rv));
if (NS_FAILED(rv)) return rv;
nsAutoCString scheme;
rv = ioServ->ExtractScheme(relativePath, scheme);
if (NS_SUCCEEDED(rv)) {
// then aSpec is absolute
result = relativePath;
return NS_OK;
}
nsAutoCString resolvedPath;
mJAREntry->Resolve(relativePath, resolvedPath);
return FormatSpec(resolvedPath, result);
}
////////////////////////////////////////////////////////////////////////////////
// nsIURL methods:
NS_IMETHODIMP
nsJARURI::GetFilePath(nsACString& filePath) {
return mJAREntry->GetFilePath(filePath);
}
nsresult nsJARURI::SetFilePath(const nsACString& filePath) {
return NS_MutateURI(mJAREntry).SetFilePath(filePath).Finalize(mJAREntry);
}
NS_IMETHODIMP
nsJARURI::GetQuery(nsACString& query) { return mJAREntry->GetQuery(query); }
nsresult nsJARURI::SetQuery(const nsACString& query) {
return NS_MutateURI(mJAREntry).SetQuery(query).Finalize(mJAREntry);
}
nsresult nsJARURI::SetQueryWithEncoding(const nsACString& query,
const mozilla::Encoding* encoding) {
return NS_MutateURI(mJAREntry)
.SetQueryWithEncoding(query, encoding)
.Finalize(mJAREntry);
}
NS_IMETHODIMP
nsJARURI::GetRef(nsACString& ref) { return mJAREntry->GetRef(ref); }
nsresult nsJARURI::SetRef(const nsACString& ref) {
return NS_MutateURI(mJAREntry).SetRef(ref).Finalize(mJAREntry);
}
NS_IMETHODIMP
nsJARURI::GetDirectory(nsACString& directory) {
return mJAREntry->GetDirectory(directory);
}
NS_IMETHODIMP
nsJARURI::GetFileName(nsACString& fileName) {
return mJAREntry->GetFileName(fileName);
}
nsresult nsJARURI::SetFileNameInternal(const nsACString& fileName) {
return NS_MutateURI(mJAREntry)
.Apply(&nsIURLMutator::SetFileName, fileName, nullptr)
.Finalize(mJAREntry);
}
NS_IMETHODIMP
nsJARURI::GetFileBaseName(nsACString& fileBaseName) {
return mJAREntry->GetFileBaseName(fileBaseName);
}
nsresult nsJARURI::SetFileBaseNameInternal(const nsACString& fileBaseName) {
return NS_MutateURI(mJAREntry)
.Apply(&nsIURLMutator::SetFileBaseName, fileBaseName, nullptr)
.Finalize(mJAREntry);
}
NS_IMETHODIMP
nsJARURI::GetFileExtension(nsACString& fileExtension) {
return mJAREntry->GetFileExtension(fileExtension);
}
nsresult nsJARURI::SetFileExtensionInternal(const nsACString& fileExtension) {
return NS_MutateURI(mJAREntry)
.Apply(&nsIURLMutator::SetFileExtension, fileExtension, nullptr)
.Finalize(mJAREntry);
}
NS_IMETHODIMP
nsJARURI::GetCommonBaseSpec(nsIURI* uriToCompare, nsACString& commonSpec) {
commonSpec.Truncate();
NS_ENSURE_ARG_POINTER(uriToCompare);
commonSpec.Truncate();
nsCOMPtr<nsIJARURI> otherJARURI(do_QueryInterface(uriToCompare));
if (!otherJARURI) {
// Nothing in common
return NS_OK;
}
nsCOMPtr<nsIURI> otherJARFile;
nsresult rv = otherJARURI->GetJARFile(getter_AddRefs(otherJARFile));
if (NS_FAILED(rv)) return rv;
bool equal;
rv = mJARFile->Equals(otherJARFile, &equal);
if (NS_FAILED(rv)) return rv;
if (!equal) {
// See what the JAR file URIs have in common
nsCOMPtr<nsIURL> ourJARFileURL(do_QueryInterface(mJARFile));
if (!ourJARFileURL) {
// Not a URL, so nothing in common
return NS_OK;
}
nsAutoCString common;
rv = ourJARFileURL->GetCommonBaseSpec(otherJARFile, common);
if (NS_FAILED(rv)) return rv;
commonSpec = NS_JAR_SCHEME + common;
return NS_OK;
}
// At this point we have the same JAR file. Compare the JAREntrys
nsAutoCString otherEntry;
rv = otherJARURI->GetJAREntry(otherEntry);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIURL> url;
rv = CreateEntryURL(otherEntry, nullptr, getter_AddRefs(url));
if (NS_FAILED(rv)) return rv;
nsAutoCString common;
rv = mJAREntry->GetCommonBaseSpec(url, common);
if (NS_FAILED(rv)) return rv;
rv = FormatSpec(common, commonSpec);
return rv;
}
NS_IMETHODIMP
nsJARURI::GetRelativeSpec(nsIURI* uriToCompare, nsACString& relativeSpec) {
GetSpec(relativeSpec);
NS_ENSURE_ARG_POINTER(uriToCompare);
nsCOMPtr<nsIJARURI> otherJARURI(do_QueryInterface(uriToCompare));
if (!otherJARURI) {
// Nothing in common
return NS_OK;
}
nsCOMPtr<nsIURI> otherJARFile;
nsresult rv = otherJARURI->GetJARFile(getter_AddRefs(otherJARFile));
if (NS_FAILED(rv)) return rv;
bool equal;
rv = mJARFile->Equals(otherJARFile, &equal);
if (NS_FAILED(rv)) return rv;
if (!equal) {
// We live in different JAR files. Nothing in common.
return rv;
}
// Same JAR file. Compare the JAREntrys
nsAutoCString otherEntry;
rv = otherJARURI->GetJAREntry(otherEntry);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIURL> url;
rv = CreateEntryURL(otherEntry, nullptr, getter_AddRefs(url));
if (NS_FAILED(rv)) return rv;
nsAutoCString relativeEntrySpec;
rv = mJAREntry->GetRelativeSpec(url, relativeEntrySpec);
if (NS_FAILED(rv)) return rv;
if (!StringBeginsWith(relativeEntrySpec, NS_BOGUS_ENTRY_SCHEME)) {
// An actual relative spec!
relativeSpec = relativeEntrySpec;
}
return rv;
}
////////////////////////////////////////////////////////////////////////////////
// nsIJARURI methods:
NS_IMETHODIMP
nsJARURI::GetJARFile(nsIURI** jarFile) { return GetInnerURI(jarFile); }
NS_IMETHODIMP
nsJARURI::GetJAREntry(nsACString& entryPath) {
nsAutoCString filePath;
mJAREntry->GetFilePath(filePath);
NS_ASSERTION(filePath.Length() > 0, "path should never be empty!");
// Trim off the leading '/'
entryPath = Substring(filePath, 1, filePath.Length() - 1);
return NS_OK;
}
nsresult nsJARURI::SetJAREntry(const nsACString& entryPath) {
return CreateEntryURL(entryPath, mCharsetHint.get(),
getter_AddRefs(mJAREntry));
}
////////////////////////////////////////////////////////////////////////////////
NS_IMETHODIMP
nsJARURI::GetInnerURI(nsIURI** aURI) {
nsCOMPtr<nsIURI> uri = mJARFile;
uri.forget(aURI);
return NS_OK;
}
NS_IMETHODIMP
nsJARURI::GetInnermostURI(nsIURI** uri) {
return NS_ImplGetInnermostURI(this, uri);
}
void nsJARURI::Serialize(URIParams& aParams) {
JARURIParams params;
SerializeURI(mJARFile, params.jarFile());
SerializeURI(mJAREntry, params.jarEntry());
params.charset() = mCharsetHint;
aParams = params;
}
bool nsJARURI::Deserialize(const URIParams& aParams) {
if (aParams.type() != URIParams::TJARURIParams) {
NS_ERROR("Received unknown parameters from the other process!");
return false;
}
const JARURIParams& params = aParams.get_JARURIParams();
nsCOMPtr<nsIURI> file = DeserializeURI(params.jarFile());
if (!file) {
NS_ERROR("Couldn't deserialize jar file URI!");
return false;
}
nsCOMPtr<nsIURI> entry = DeserializeURI(params.jarEntry());
if (!entry) {
NS_ERROR("Couldn't deserialize jar entry URI!");
return false;
}
nsCOMPtr<nsIURL> entryURL = do_QueryInterface(entry);
if (!entryURL) {
NS_ERROR("Couldn't QI jar entry URI to nsIURL!");
return false;
}
mJARFile.swap(file);
mJAREntry.swap(entryURL);
mCharsetHint = params.charset();
return true;
}