Add m-esr52 at 52.6.0

1 files changed, 913 insertions, 0 deletions

diff --git a/modules/libjar/nsJARURI.cpp b/modules/libjar/nsJARURI.cpp
new file mode 100644
index 000000000..e46e51467
--- /dev/null
+++ b/modules/libjar/nsJARURI.cpp
@@ -0,0 +1,913 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * 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 "nsIIOService.h"
+#include "nsIStandardURL.h"
+#include "nsCRT.h"
+#include "nsIComponentManager.h"
+#include "nsIServiceManager.h"
+#include "nsIZipReader.h"
+#include "nsReadableUtils.h"
+#include "nsAutoPtr.h"
+#include "nsNetCID.h"
+#include "nsIObjectInputStream.h"
+#include "nsIObjectOutputStream.h"
+#include "mozilla/ipc/URIUtils.h"
+
+using namespace mozilla::ipc;
+
+static NS_DEFINE_CID(kJARURICID, NS_JARURI_CID);
+
+////////////////////////////////////////////////////////////////////////////////
+ 
+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(nsIURIWithQuery)
+  NS_INTERFACE_MAP_ENTRY(nsIURL)
+  NS_INTERFACE_MAP_ENTRY(nsIJARURI)
+  NS_INTERFACE_MAP_ENTRY(nsISerializable)
+  NS_INTERFACE_MAP_ENTRY(nsIClassInfo)
+  NS_INTERFACE_MAP_ENTRY(nsINestedURI)
+  NS_INTERFACE_MAP_ENTRY(nsIIPCSerializableURI)
+  // see nsJARURI::Equals
+  if (aIID.Equals(NS_GET_IID(nsJARURI)))
+      foundInterface = reinterpret_cast<nsISupports*>(this);
+  else
+NS_INTERFACE_MAP_END
+
+nsresult
+nsJARURI::Init(const char *charsetHint)
+{
+    mCharsetHint = charsetHint;
+    return NS_OK;
+}
+
+#define NS_JAR_SCHEME           NS_LITERAL_CSTRING("jar:")
+#define NS_JAR_DELIMITER        NS_LITERAL_CSTRING("!/")
+#define NS_BOGUS_ENTRY_SCHEME   NS_LITERAL_CSTRING("x:///")
+
+// 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;
+
+    nsCOMPtr<nsIStandardURL> stdURL(do_CreateInstance(NS_STANDARDURL_CONTRACTID));
+    if (!stdURL) {
+        return NS_ERROR_OUT_OF_MEMORY;
+    }
+
+    // Flatten the concatenation, just in case.  See bug 128288
+    nsAutoCString spec(NS_BOGUS_ENTRY_SCHEME + entryFilename);
+    nsresult rv = stdURL->Init(nsIStandardURL::URLTYPE_NO_AUTHORITY, -1,
+                               spec, charset, nullptr);
+    if (NS_FAILED(rv)) {
+        return rv;
+    }
+
+    return CallQueryInterface(stdURL, url);
+}
+    
+////////////////////////////////////////////////////////////////////////////////
+// nsISerializable methods:
+
+NS_IMETHODIMP
+nsJARURI::Read(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;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// nsIClassInfo methods:
+
+NS_IMETHODIMP 
+nsJARURI::GetInterfaces(uint32_t *count, nsIID * **array)
+{
+    *count = 0;
+    *array = nullptr;
+    return NS_OK;
+}
+
+NS_IMETHODIMP 
+nsJARURI::GetScriptableHelper(nsIXPCScriptable **_retval)
+{
+    *_retval = nullptr;
+    return NS_OK;
+}
+
+NS_IMETHODIMP 
+nsJARURI::GetContractID(char * *aContractID)
+{
+    *aContractID = nullptr;
+    return NS_OK;
+}
+
+NS_IMETHODIMP 
+nsJARURI::GetClassDescription(char * *aClassDescription)
+{
+    *aClassDescription = nullptr;
+    return NS_OK;
+}
+
+NS_IMETHODIMP 
+nsJARURI::GetClassID(nsCID * *aClassID)
+{
+    *aClassID = (nsCID*) moz_xmalloc(sizeof(nsCID));
+    if (!*aClassID)
+        return NS_ERROR_OUT_OF_MEMORY;
+    return GetClassIDNoAlloc(*aClassID);
+}
+
+NS_IMETHODIMP 
+nsJARURI::GetFlags(uint32_t *aFlags)
+{
+    // XXX We implement THREADSAFE addref/release, but probably shouldn't.
+    *aFlags = nsIClassInfo::MAIN_THREAD_ONLY;
+    return NS_OK;
+}
+
+NS_IMETHODIMP 
+nsJARURI::GetClassIDNoAlloc(nsCID *aClassIDNoAlloc)
+{
+    *aClassIDNoAlloc = kJARURICID;
+    return NS_OK;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// 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::GetHasRef(bool *result)
+{
+    return mJAREntry->GetHasRef(result);
+}
+
+NS_IMETHODIMP
+nsJARURI::SetSpec(const nsACString& aSpec)
+{
+    return SetSpecWithBase(aSpec, nullptr);
+}
+
+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;
+        aBaseURL->QueryInterface(NS_GET_IID(nsJARURI), getter_AddRefs(otherJAR));
+        NS_ENSURE_TRUE(otherJAR, NS_NOINTERFACE);
+
+        mJARFile = otherJAR->mJARFile;
+
+        nsCOMPtr<nsIStandardURL> entry(do_CreateInstance(NS_STANDARDURL_CONTRACTID));
+        if (!entry)
+            return NS_ERROR_OUT_OF_MEMORY;
+
+        rv = entry->Init(nsIStandardURL::URLTYPE_NO_AUTHORITY, -1,
+                         aSpec, mCharsetHint.get(), otherJAR->mJAREntry);
+        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:"
+
+    // Search backward from the end for the "!/" delimiter. Remember, jar URLs
+    // can nest, e.g.:
+    //    jar:jar:http://www.foo.com/bar.jar!/a.jar!/b.html
+    // 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
+
+    nsACString::const_iterator 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;
+
+    NS_TryToSetImmutable(mJARFile);
+
+    // skip over any extra '/' chars
+    while (*delim_end == '/')
+        ++delim_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;
+}
+
+NS_IMETHODIMP
+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;
+}
+
+NS_IMETHODIMP
+nsJARURI::SetUserPass(const nsACString &aUserPass)
+{
+    return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsJARURI::GetUsername(nsACString &aUsername)
+{
+    return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsJARURI::SetUsername(const nsACString &aUsername)
+{
+    return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsJARURI::GetPassword(nsACString &aPassword)
+{
+    return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsJARURI::SetPassword(const nsACString &aPassword)
+{
+    return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsJARURI::GetHostPort(nsACString &aHostPort)
+{
+    return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsJARURI::SetHostPort(const nsACString &aHostPort)
+{
+    return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsJARURI::SetHostAndPort(const nsACString &aHostPort)
+{
+    return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsJARURI::GetHost(nsACString &aHost)
+{
+    return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsJARURI::SetHost(const nsACString &aHost)
+{
+    return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsJARURI::GetPort(int32_t *aPort)
+{
+    return NS_ERROR_FAILURE;
+}
+ 
+NS_IMETHODIMP
+nsJARURI::SetPort(int32_t aPort)
+{
+    return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsJARURI::GetPath(nsACString &aPath)
+{
+    nsAutoCString entrySpec;
+    mJAREntry->GetSpec(entrySpec);
+    return FormatSpec(entrySpec, aPath, false);
+}
+
+NS_IMETHODIMP
+nsJARURI::SetPath(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::GetOriginCharset(nsACString &aOriginCharset)
+{
+    aOriginCharset = mCharsetHint;
+    return NS_OK;
+}
+
+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;
+    other->QueryInterface(NS_GET_IID(nsJARURI), getter_AddRefs(otherJAR));
+    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)
+{
+    NS_ENSURE_ARG_POINTER(o_Equals);
+    if (!i_Scheme) return NS_ERROR_INVALID_ARG;
+
+    if (*i_Scheme == 'j' || *i_Scheme == 'J') {
+        *o_Equals = PL_strcasecmp("jar", i_Scheme) ? false : true;
+    } else {
+        *o_Equals = false;
+    }
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsJARURI::Clone(nsIURI **result)
+{
+    nsresult rv;
+
+    nsCOMPtr<nsIJARURI> uri;
+    rv = CloneWithJARFileInternal(mJARFile, eHonorRef, getter_AddRefs(uri));
+    if (NS_FAILED(rv)) return rv;
+
+    uri.forget(result);
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsJARURI::CloneIgnoringRef(nsIURI **result)
+{
+    nsresult rv;
+
+    nsCOMPtr<nsIJARURI> uri;
+    rv = CloneWithJARFileInternal(mJARFile, eIgnoreRef, getter_AddRefs(uri));
+    if (NS_FAILED(rv)) return rv;
+
+    uri.forget(result);
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsJARURI::CloneWithNewRef(const nsACString& newRef, nsIURI **result)
+{
+    nsresult rv;
+
+    nsCOMPtr<nsIJARURI> uri;
+    rv = CloneWithJARFileInternal(mJARFile, eReplaceRef, newRef,
+                                  getter_AddRefs(uri));
+    if (NS_FAILED(rv)) return rv;
+
+    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);
+}
+
+NS_IMETHODIMP
+nsJARURI::SetFilePath(const nsACString& filePath)
+{
+    return mJAREntry->SetFilePath(filePath);
+}
+
+NS_IMETHODIMP
+nsJARURI::GetQuery(nsACString& query)
+{
+    return mJAREntry->GetQuery(query);
+}
+
+NS_IMETHODIMP
+nsJARURI::SetQuery(const nsACString& query)
+{
+    return mJAREntry->SetQuery(query);
+}
+
+NS_IMETHODIMP
+nsJARURI::GetRef(nsACString& ref)
+{
+    return mJAREntry->GetRef(ref);
+}
+
+NS_IMETHODIMP
+nsJARURI::SetRef(const nsACString& ref)
+{
+    return mJAREntry->SetRef(ref);
+}
+
+NS_IMETHODIMP
+nsJARURI::GetDirectory(nsACString& directory)
+{
+    return mJAREntry->GetDirectory(directory);
+}
+
+NS_IMETHODIMP
+nsJARURI::SetDirectory(const nsACString& directory)
+{
+    return mJAREntry->SetDirectory(directory);
+}
+
+NS_IMETHODIMP
+nsJARURI::GetFileName(nsACString& fileName)
+{
+    return mJAREntry->GetFileName(fileName);
+}
+
+NS_IMETHODIMP
+nsJARURI::SetFileName(const nsACString& fileName)
+{
+    return mJAREntry->SetFileName(fileName);
+}
+
+NS_IMETHODIMP
+nsJARURI::GetFileBaseName(nsACString& fileBaseName)
+{
+    return mJAREntry->GetFileBaseName(fileBaseName);
+}
+
+NS_IMETHODIMP
+nsJARURI::SetFileBaseName(const nsACString& fileBaseName)
+{
+    return mJAREntry->SetFileBaseName(fileBaseName);
+}
+
+NS_IMETHODIMP
+nsJARURI::GetFileExtension(nsACString& fileExtension)
+{
+    return mJAREntry->GetFileExtension(fileExtension);
+}
+
+NS_IMETHODIMP
+nsJARURI::SetFileExtension(const nsACString& fileExtension)
+{
+    return mJAREntry->SetFileExtension(fileExtension);
+}
+
+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;
+
+    nsAutoCString otherCharset;
+    rv = uriToCompare->GetOriginCharset(otherCharset);
+    if (NS_FAILED(rv)) return rv;
+
+    nsCOMPtr<nsIURL> url;
+    rv = CreateEntryURL(otherEntry, otherCharset.get(), 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;
+
+    nsAutoCString otherCharset;
+    rv = uriToCompare->GetOriginCharset(otherCharset);
+    if (NS_FAILED(rv)) return rv;
+
+    nsCOMPtr<nsIURL> url;
+    rv = CreateEntryURL(otherEntry, otherCharset.get(), 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;
+}
+
+NS_IMETHODIMP
+nsJARURI::SetJAREntry(const nsACString &entryPath)
+{
+    return CreateEntryURL(entryPath, mCharsetHint.get(),
+                          getter_AddRefs(mJAREntry));
+}
+
+NS_IMETHODIMP
+nsJARURI::CloneWithJARFile(nsIURI *jarFile, nsIJARURI **result)
+{
+    return CloneWithJARFileInternal(jarFile, eHonorRef, result);
+}
+
+nsresult
+nsJARURI::CloneWithJARFileInternal(nsIURI *jarFile,
+                                   nsJARURI::RefHandlingEnum refHandlingMode,
+                                   nsIJARURI **result)
+{
+  return CloneWithJARFileInternal(jarFile, refHandlingMode, EmptyCString(), result);
+}
+
+nsresult
+nsJARURI::CloneWithJARFileInternal(nsIURI *jarFile,
+                                   nsJARURI::RefHandlingEnum refHandlingMode,
+                                   const nsACString& newRef,
+                                   nsIJARURI **result)
+{
+    if (!jarFile) {
+        return NS_ERROR_INVALID_ARG;
+    }
+
+    nsresult rv;
+
+    nsCOMPtr<nsIURI> newJARFile;
+    rv = jarFile->Clone(getter_AddRefs(newJARFile));
+    if (NS_FAILED(rv)) return rv;
+
+    NS_TryToSetImmutable(newJARFile);
+
+    nsCOMPtr<nsIURI> newJAREntryURI;
+    if (refHandlingMode == eHonorRef) {
+      rv = mJAREntry->Clone(getter_AddRefs(newJAREntryURI));
+    } else if (refHandlingMode == eReplaceRef) {
+      rv = mJAREntry->CloneWithNewRef(newRef, getter_AddRefs(newJAREntryURI));
+    } else {
+      rv = mJAREntry->CloneIgnoringRef(getter_AddRefs(newJAREntryURI));
+    }
+    if (NS_FAILED(rv)) return rv;
+
+    nsCOMPtr<nsIURL> newJAREntry(do_QueryInterface(newJAREntryURI));
+    NS_ASSERTION(newJAREntry, "This had better QI to nsIURL!");
+    
+    nsJARURI* uri = new nsJARURI();
+    NS_ADDREF(uri);
+    uri->mJARFile = newJARFile;
+    uri->mJAREntry = newJAREntry;
+    *result = uri;
+
+    return NS_OK;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+NS_IMETHODIMP
+nsJARURI::GetInnerURI(nsIURI **uri)
+{
+    return NS_EnsureSafeToReturn(mJARFile, uri);
+}
+
+NS_IMETHODIMP
+nsJARURI::GetInnermostURI(nsIURI** uri)
+{
+    return NS_ImplGetInnermostURI(this, uri);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// nsIIPCSerializableURI methods:
+
+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;
+}