gecko-dev/modules/libjar/nsJARURI.cpp

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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):
*
* 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 "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 "nsIProgrammingLanguage.h"
static NS_DEFINE_CID(kJARURICID, NS_JARURI_CID);
////////////////////////////////////////////////////////////////////////////////
nsJARURI::nsJARURI()
{
}
nsJARURI::~nsJARURI()
{
}
// XXX Why is this threadsafe?
NS_IMPL_THREADSAFE_ADDREF(nsJARURI)
NS_IMPL_THREADSAFE_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_INTERFACE_MAP_ENTRY(nsIClassInfo)
NS_INTERFACE_MAP_ENTRY(nsINestedURI)
// 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,
PRBool aIncludeScheme)
{
// The entrySpec MUST start with "x:///"
NS_ASSERTION(StringBeginsWith(entrySpec, NS_BOGUS_ENTRY_SCHEME),
"bogus entry spec");
nsCAutoString 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 = nsnull;
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
nsCAutoString spec(NS_BOGUS_ENTRY_SCHEME + entryFilename);
nsresult rv = stdURL->Init(nsIStandardURL::URLTYPE_NO_AUTHORITY, -1,
spec, charset, nsnull);
if (NS_FAILED(rv)) {
return rv;
}
return CallQueryInterface(stdURL, url);
}
////////////////////////////////////////////////////////////////////////////////
// nsISerializable methods:
NS_IMETHODIMP
nsJARURI::Read(nsIObjectInputStream* aInputStream)
{
nsresult rv;
rv = aInputStream->ReadObject(PR_TRUE, getter_AddRefs(mJARFile));
NS_ENSURE_SUCCESS(rv, rv);
rv = aInputStream->ReadObject(PR_TRUE, getter_AddRefs(mJAREntry));
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),
PR_TRUE);
NS_ENSURE_SUCCESS(rv, rv);
rv = aOutputStream->WriteCompoundObject(mJAREntry, NS_GET_IID(nsIURL),
PR_TRUE);
NS_ENSURE_SUCCESS(rv, rv);
rv = aOutputStream->WriteStringZ(mCharsetHint.get());
return rv;
}
////////////////////////////////////////////////////////////////////////////////
// nsIClassInfo methods:
NS_IMETHODIMP
nsJARURI::GetInterfaces(PRUint32 *count, nsIID * **array)
{
*count = 0;
*array = nsnull;
return NS_OK;
}
NS_IMETHODIMP
nsJARURI::GetHelperForLanguage(PRUint32 language, nsISupports **_retval)
{
*_retval = nsnull;
return NS_OK;
}
NS_IMETHODIMP
nsJARURI::GetContractID(char * *aContractID)
{
*aContractID = nsnull;
return NS_OK;
}
NS_IMETHODIMP
nsJARURI::GetClassDescription(char * *aClassDescription)
{
*aClassDescription = nsnull;
return NS_OK;
}
NS_IMETHODIMP
nsJARURI::GetClassID(nsCID * *aClassID)
{
*aClassID = (nsCID*) nsMemory::Alloc(sizeof(nsCID));
if (!*aClassID)
return NS_ERROR_OUT_OF_MEMORY;
return GetClassIDNoAlloc(*aClassID);
}
NS_IMETHODIMP
nsJARURI::GetImplementationLanguage(PRUint32 *aImplementationLanguage)
{
*aImplementationLanguage = nsIProgrammingLanguage::CPLUSPLUS;
return NS_OK;
}
NS_IMETHODIMP
nsJARURI::GetFlags(PRUint32 *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)
{
nsCAutoString entrySpec;
mJAREntry->GetSpec(entrySpec);
return FormatSpec(entrySpec, aSpec);
}
NS_IMETHODIMP
nsJARURI::SetSpec(const nsACString& aSpec)
{
return SetSpecWithBase(aSpec, nsnull);
}
nsresult
nsJARURI::SetSpecWithBase(const nsACString &aSpec, nsIURI* aBaseURL)
{
nsresult rv;
nsCOMPtr<nsIIOService> ioServ(do_GetIOService(&rv));
NS_ENSURE_SUCCESS(rv, rv);
nsCAutoString scheme;
rv = ioServ->ExtractScheme(aSpec, scheme);
if (NS_FAILED(rv)) {
// not an absolute URI
if (!aBaseURL)
return NS_ERROR_MALFORMED_URI;
nsRefPtr<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::GetHost(nsACString &aHost)
{
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsJARURI::SetHost(const nsACString &aHost)
{
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsJARURI::GetPort(PRInt32 *aPort)
{
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsJARURI::SetPort(PRInt32 aPort)
{
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsJARURI::GetPath(nsACString &aPath)
{
nsCAutoString entrySpec;
mJAREntry->GetSpec(entrySpec);
return FormatSpec(entrySpec, aPath, PR_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::GetAsciiHost(nsACString &aHost)
{
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsJARURI::GetOriginCharset(nsACString &aOriginCharset)
{
aOriginCharset = mCharsetHint;
return NS_OK;
}
NS_IMETHODIMP
nsJARURI::Equals(nsIURI *other, PRBool *result)
{
nsresult rv;
*result = PR_FALSE;
if (other == nsnull)
return NS_OK; // not equal
nsRefPtr<nsJARURI> otherJAR;
other->QueryInterface(NS_GET_IID(nsJARURI), getter_AddRefs(otherJAR));
if (!otherJAR)
return NS_OK; // not equal
PRBool equal;
rv = mJARFile->Equals(otherJAR->mJARFile, &equal);
if (NS_FAILED(rv) || !equal) {
return rv; // not equal
}
rv = mJAREntry->Equals(otherJAR->mJAREntry, result);
return rv;
}
NS_IMETHODIMP
nsJARURI::SchemeIs(const char *i_Scheme, PRBool *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) ? PR_FALSE : PR_TRUE;
} else {
*o_Equals = PR_FALSE;
}
return NS_OK;
}
NS_IMETHODIMP
nsJARURI::Clone(nsIURI **result)
{
nsresult rv;
nsCOMPtr<nsIJARURI> uri;
rv = CloneWithJARFile(mJARFile, getter_AddRefs(uri));
if (NS_FAILED(rv)) return rv;
return CallQueryInterface(uri, result);
}
NS_IMETHODIMP
nsJARURI::Resolve(const nsACString &relativePath, nsACString &result)
{
nsresult rv;
nsCOMPtr<nsIIOService> ioServ(do_GetIOService(&rv));
if (NS_FAILED(rv))
return rv;
nsCAutoString scheme;
rv = ioServ->ExtractScheme(relativePath, scheme);
if (NS_SUCCEEDED(rv)) {
// then aSpec is absolute
result = relativePath;
return NS_OK;
}
nsCAutoString 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::GetParam(nsACString& param)
{
param.Truncate();
return NS_OK;
}
NS_IMETHODIMP
nsJARURI::SetParam(const nsACString& param)
{
return NS_ERROR_NOT_AVAILABLE;
}
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;
PRBool 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;
}
nsCAutoString 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
nsCAutoString otherEntry;
rv = otherJARURI->GetJAREntry(otherEntry);
if (NS_FAILED(rv)) return rv;
nsCAutoString 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;
nsCAutoString 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;
PRBool 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
nsCAutoString otherEntry;
rv = otherJARURI->GetJAREntry(otherEntry);
if (NS_FAILED(rv)) return rv;
nsCAutoString 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;
nsCAutoString 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)
{
nsCAutoString 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)
{
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;
rv = mJAREntry->Clone(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();
if (uri) {
NS_ADDREF(uri);
uri->mJARFile = newJARFile;
uri->mJAREntry = newJAREntry;
*result = uri;
rv = NS_OK;
} else {
rv = NS_ERROR_OUT_OF_MEMORY;
}
return rv;
}
////////////////////////////////////////////////////////////////////////////////
NS_IMETHODIMP
nsJARURI::GetInnerURI(nsIURI **uri)
{
return NS_EnsureSafeToReturn(mJARFile, uri);
}
NS_IMETHODIMP
nsJARURI::GetInnermostURI(nsIURI** uri)
{
return NS_ImplGetInnermostURI(this, uri);
}