1 files changed, 191 insertions, 0 deletions
diff --git a/modules/libjar/nsJAR.h b/modules/libjar/nsJAR.h
new file mode 100644
index 0000000000..b988c04f1c
--- /dev/null
+++ b/modules/libjar/nsJAR.h
@@ -0,0 +1,191 @@
+/* -*- 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/. */
+
+#ifndef nsJAR_h_
+#define nsJAR_h_
+
+#include "nscore.h"
+#include "prio.h"
+#include "plstr.h"
+#include "mozilla/Logging.h"
+#include "prinrval.h"
+
+#include "mozilla/Atomics.h"
+#include "mozilla/RecursiveMutex.h"
+#include "nsCOMPtr.h"
+#include "nsClassHashtable.h"
+#include "nsString.h"
+#include "nsIFile.h"
+#include "nsStringEnumerator.h"
+#include "nsHashKeys.h"
+#include "nsRefPtrHashtable.h"
+#include "nsTHashtable.h"
+#include "nsIZipReader.h"
+#include "nsZipArchive.h"
+#include "nsWeakReference.h"
+#include "nsIObserver.h"
+#include "mozilla/Attributes.h"
+
+class nsZipReaderCache;
+
+/*-------------------------------------------------------------------------
+ * Class nsJAR declaration.
+ * nsJAR serves as an XPCOM wrapper for nsZipArchive with the addition of
+ * JAR manifest file parsing.
+ *------------------------------------------------------------------------*/
+class nsJAR final : public nsIZipReader {
+  // Allows nsJARInputStream to call the verification functions
+  friend class nsJARInputStream;
+  // Allows nsZipReaderCache to access mOuterZipEntry
+  friend class nsZipReaderCache;
+
+ private:
+  virtual ~nsJAR();
+
+ public:
+  nsJAR();
+
+  NS_DEFINE_STATIC_CID_ACCESSOR(NS_ZIPREADER_CID)
+
+  NS_DECL_THREADSAFE_ISUPPORTS
+
+  NS_DECL_NSIZIPREADER
+
+  nsresult GetFullJarPath(nsACString& aResult);
+
+  // These access to mReleaseTime, which is locked by nsZipReaderCache's
+  // mLock, not nsJAR's mLock
+  PRIntervalTime GetReleaseTime() { return mReleaseTime; }
+
+  bool IsReleased() { return mReleaseTime != PR_INTERVAL_NO_TIMEOUT; }
+
+  void SetReleaseTime() { mReleaseTime = PR_IntervalNow(); }
+
+  void ClearReleaseTime() { mReleaseTime = PR_INTERVAL_NO_TIMEOUT; }
+
+  void SetZipReaderCache(nsZipReaderCache* aCache) {
+    mozilla::RecursiveMutexAutoLock lock(mLock);
+    mCache = aCache;
+  }
+
+  nsresult GetNSPRFileDesc(PRFileDesc** aNSPRFileDesc);
+
+ protected:
+  nsresult LoadEntry(const nsACString& aFilename, nsCString& aBuf);
+  int32_t ReadLine(const char** src);
+
+  // used by nsZipReaderCache for flushing entries; access is locked by
+  // nsZipReaderCache's mLock
+  PRIntervalTime mReleaseTime;
+
+  //-- Private data members, protected by mLock
+  mozilla::RecursiveMutex mLock;
+  // The entry in the zip this zip is reading from
+  nsCString mOuterZipEntry MOZ_GUARDED_BY(mLock);
+  // The zip/jar file on disk
+  nsCOMPtr<nsIFile> mZipFile MOZ_GUARDED_BY(mLock);
+  // The underlying zip archive
+  RefPtr<nsZipArchive> mZip MOZ_GUARDED_BY(mLock);
+  // if cached, this points to the cache it's contained in
+  nsZipReaderCache* mCache MOZ_GUARDED_BY(mLock);
+};
+
+/**
+ * nsJARItem
+ *
+ * An individual JAR entry. A set of nsJARItems matching a
+ * supplied pattern are returned in a nsJAREnumerator.
+ */
+class nsJARItem : public nsIZipEntry {
+ public:
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSIZIPENTRY
+
+  explicit nsJARItem(nsZipItem* aZipItem);
+
+ private:
+  virtual ~nsJARItem() {}
+
+  const uint32_t mSize;     /* size in original file */
+  const uint32_t mRealsize; /* inflated size */
+  const uint32_t mCrc32;
+  const PRTime mLastModTime;
+  const uint16_t mCompression;
+  const uint32_t mPermissions;
+  const bool mIsDirectory;
+  const bool mIsSynthetic;
+};
+
+/**
+ * nsJAREnumerator
+ *
+ * Enumerates a list of files in a zip archive
+ * (based on a pattern match in its member nsZipFind).
+ */
+class nsJAREnumerator final : public nsStringEnumeratorBase {
+ public:
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSIUTF8STRINGENUMERATOR
+
+  using nsStringEnumeratorBase::GetNext;
+
+  explicit nsJAREnumerator(nsZipFind* aFind)
+      : mFind(aFind), mName(nullptr), mNameLen(0) {
+    NS_ASSERTION(mFind, "nsJAREnumerator: Missing zipFind.");
+  }
+
+ private:
+  nsZipFind* mFind;
+  const char* mName;  // pointer to an name owned by mArchive -- DON'T delete
+  uint16_t mNameLen;
+
+  ~nsJAREnumerator() { delete mFind; }
+};
+
+////////////////////////////////////////////////////////////////////////////////
+
+#if defined(DEBUG_warren) || defined(DEBUG_jband)
+#  define ZIP_CACHE_HIT_RATE
+#endif
+
+class nsZipReaderCache : public nsIZipReaderCache,
+                         public nsIObserver,
+                         public nsSupportsWeakReference {
+  friend class nsJAR;
+
+ public:
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSIZIPREADERCACHE
+  NS_DECL_NSIOBSERVER
+
+  nsZipReaderCache();
+
+  nsresult ReleaseZip(nsJAR* reader);
+
+  typedef nsRefPtrHashtable<nsCStringHashKey, nsJAR> ZipsHashtable;
+
+ protected:
+  void AssertLockOwned() { mLock.AssertCurrentThreadOwns(); }
+
+  virtual ~nsZipReaderCache();
+
+  mozilla::Mutex mLock;
+  uint32_t mCacheSize MOZ_GUARDED_BY(mLock);
+  ZipsHashtable mZips MOZ_GUARDED_BY(mLock);
+
+#ifdef ZIP_CACHE_HIT_RATE
+  uint32_t mZipCacheLookups MOZ_GUARDED_BY(mLock);
+  uint32_t mZipCacheHits MOZ_GUARDED_BY(mLock);
+  uint32_t mZipCacheFlushes MOZ_GUARDED_BY(mLock);
+  uint32_t mZipSyncMisses MOZ_GUARDED_BY(mLock);
+#endif
+
+ private:
+  nsresult GetZip(nsIFile* zipFile, nsIZipReader** result, bool failOnMiss);
+};
+
+////////////////////////////////////////////////////////////////////////////////
+
+#endif /* nsJAR_h_ */