1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/* -*- 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 "mozilla/Logging.h"
#include "prinrval.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"
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_ */
|
