зеркало из https://github.com/mozilla/gecko-dev.git
406 строки
14 KiB
C++
406 строки
14 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsStandardURL_h__
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#define nsStandardURL_h__
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#include "nsString.h"
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#include "nsISerializable.h"
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#include "nsIFileURL.h"
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#include "nsIStandardURL.h"
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#include "mozilla/Encoding.h"
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#include "nsIObserver.h"
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#include "nsCOMPtr.h"
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#include "nsURLHelper.h"
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#include "nsIClassInfo.h"
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#include "nsISizeOf.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/LinkedList.h"
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#include "mozilla/MemoryReporting.h"
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#include "nsIIPCSerializableURI.h"
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#include "nsISensitiveInfoHiddenURI.h"
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#ifdef NS_BUILD_REFCNT_LOGGING
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#define DEBUG_DUMP_URLS_AT_SHUTDOWN
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#endif
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class nsIBinaryInputStream;
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class nsIBinaryOutputStream;
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class nsIIDNService;
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class nsIPrefBranch;
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class nsIFile;
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class nsIURLParser;
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namespace mozilla {
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class Encoding;
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namespace net {
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//-----------------------------------------------------------------------------
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// standard URL implementation
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//-----------------------------------------------------------------------------
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class nsStandardURL : public nsIFileURL
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, public nsIStandardURL
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, public nsISerializable
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, public nsIClassInfo
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, public nsISizeOf
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, public nsIIPCSerializableURI
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, public nsISensitiveInfoHiddenURI
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#ifdef DEBUG_DUMP_URLS_AT_SHUTDOWN
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, public LinkedListElement<nsStandardURL>
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#endif
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{
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protected:
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virtual ~nsStandardURL();
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIURI
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NS_DECL_NSIURL
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NS_DECL_NSIFILEURL
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NS_DECL_NSISTANDARDURL
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NS_DECL_NSISERIALIZABLE
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NS_DECL_NSICLASSINFO
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NS_DECL_NSIMUTABLE
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NS_DECL_NSIIPCSERIALIZABLEURI
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NS_DECL_NSISENSITIVEINFOHIDDENURI
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// nsISizeOf
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virtual size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const override;
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virtual size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const override;
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explicit nsStandardURL(bool aSupportsFileURL = false, bool aTrackURL = true);
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static void InitGlobalObjects();
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static void ShutdownGlobalObjects();
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public: /* internal -- HPUX compiler can't handle this being private */
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//
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// location and length of an url segment relative to mSpec
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//
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struct URLSegment
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{
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uint32_t mPos;
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int32_t mLen;
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URLSegment() : mPos(0), mLen(-1) {}
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URLSegment(uint32_t pos, int32_t len) : mPos(pos), mLen(len) {}
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URLSegment(const URLSegment& aCopy) : mPos(aCopy.mPos), mLen(aCopy.mLen) {}
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void Reset() { mPos = 0; mLen = -1; }
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// Merge another segment following this one to it if they're contiguous
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// Assumes we have something like "foo;bar" where this object is 'foo' and right
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// is 'bar'.
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void Merge(const nsCString &spec, const char separator, const URLSegment &right) {
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if (mLen >= 0 &&
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*(spec.get() + mPos + mLen) == separator &&
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mPos + mLen + 1 == right.mPos) {
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mLen += 1 + right.mLen;
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}
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}
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};
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//
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// Pref observer
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//
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class nsPrefObserver final : public nsIObserver
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{
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~nsPrefObserver() {}
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIOBSERVER
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nsPrefObserver() { }
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};
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friend class nsPrefObserver;
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//
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// URL segment encoder : performs charset conversion and URL escaping.
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//
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class nsSegmentEncoder
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{
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public:
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explicit nsSegmentEncoder(const Encoding* encoding = nullptr);
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// Encode the given segment if necessary, and return the length of
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// the encoded segment. The encoded segment is appended to |buf|
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// if and only if encoding is required.
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int32_t EncodeSegmentCount(const char *str,
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const URLSegment &segment,
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int16_t mask,
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nsCString& buf,
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bool& appended,
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uint32_t extraLen = 0);
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// Encode the given string if necessary, and return a reference to
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// the encoded string. Returns a reference to |buf| if encoding
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// is required. Otherwise, a reference to |str| is returned.
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const nsACString& EncodeSegment(const nsACString& str,
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int16_t mask,
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nsCString& buf);
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private:
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const Encoding* mEncoding;
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};
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friend class nsSegmentEncoder;
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static nsresult NormalizeIPv4(const nsACString& host, nsCString& result);
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protected:
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// enum used in a few places to specify how .ref attribute should be handled
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enum RefHandlingEnum {
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eIgnoreRef,
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eHonorRef,
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eReplaceRef
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};
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// Helper to share code between Equals and EqualsExceptRef
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// NOTE: *not* virtual, because no one needs to override this so far...
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nsresult EqualsInternal(nsIURI* unknownOther,
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RefHandlingEnum refHandlingMode,
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bool* result);
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virtual nsStandardURL* StartClone();
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// Helper to share code between Clone methods.
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nsresult CloneInternal(RefHandlingEnum aRefHandlingMode,
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const nsACString& newRef,
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nsIURI** aClone);
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// Helper method that copies member variables from the source StandardURL
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// if copyCached = true, it will also copy mFile and mDisplayHost
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nsresult CopyMembers(nsStandardURL * source, RefHandlingEnum mode,
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const nsACString& newRef,
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bool copyCached = false);
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// Helper for subclass implementation of GetFile(). Subclasses that map
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// URIs to files in a special way should implement this method. It should
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// ensure that our mFile is initialized, if it's possible.
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// returns NS_ERROR_NO_INTERFACE if the url does not map to a file
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virtual nsresult EnsureFile();
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private:
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int32_t Port() { return mPort == -1 ? mDefaultPort : mPort; }
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void ReplacePortInSpec(int32_t aNewPort);
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void Clear();
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void InvalidateCache(bool invalidateCachedFile = true);
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bool ValidIPv6orHostname(const char *host, uint32_t aLen);
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static bool IsValidOfBase(unsigned char c, const uint32_t base);
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nsresult NormalizeIDN(const nsACString& host, nsCString& result);
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nsresult CheckIfHostIsAscii();
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void CoalescePath(netCoalesceFlags coalesceFlag, char *path);
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uint32_t AppendSegmentToBuf(char *, uint32_t, const char *,
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const URLSegment &input, URLSegment &output,
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const nsCString *esc=nullptr,
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bool useEsc = false, int32_t* diff = nullptr);
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uint32_t AppendToBuf(char *, uint32_t, const char *, uint32_t);
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nsresult BuildNormalizedSpec(const char* spec, const Encoding* encoding);
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nsresult SetSpecWithEncoding(const nsACString &input, const Encoding* encoding);
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bool SegmentIs(const URLSegment &s1, const char *val, bool ignoreCase = false);
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bool SegmentIs(const char* spec, const URLSegment &s1, const char *val, bool ignoreCase = false);
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bool SegmentIs(const URLSegment &s1, const char *val, const URLSegment &s2, bool ignoreCase = false);
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int32_t ReplaceSegment(uint32_t pos, uint32_t len, const char *val, uint32_t valLen);
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int32_t ReplaceSegment(uint32_t pos, uint32_t len, const nsACString &val);
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nsresult ParseURL(const char *spec, int32_t specLen);
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nsresult ParsePath(const char *spec, uint32_t pathPos, int32_t pathLen = -1);
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char *AppendToSubstring(uint32_t pos, int32_t len, const char *tail);
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// dependent substring helpers
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const nsDependentCSubstring Segment(uint32_t pos, int32_t len); // see below
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const nsDependentCSubstring Segment(const URLSegment &s) { return Segment(s.mPos, s.mLen); }
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// dependent substring getters
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const nsDependentCSubstring Prepath(); // see below
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const nsDependentCSubstring Scheme() { return Segment(mScheme); }
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const nsDependentCSubstring Userpass(bool includeDelim = false); // see below
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const nsDependentCSubstring Username() { return Segment(mUsername); }
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const nsDependentCSubstring Password() { return Segment(mPassword); }
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const nsDependentCSubstring Hostport(); // see below
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const nsDependentCSubstring Host(); // see below
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const nsDependentCSubstring Path() { return Segment(mPath); }
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const nsDependentCSubstring Filepath() { return Segment(mFilepath); }
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const nsDependentCSubstring Directory() { return Segment(mDirectory); }
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const nsDependentCSubstring Filename(); // see below
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const nsDependentCSubstring Basename() { return Segment(mBasename); }
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const nsDependentCSubstring Extension() { return Segment(mExtension); }
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const nsDependentCSubstring Query() { return Segment(mQuery); }
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const nsDependentCSubstring Ref() { return Segment(mRef); }
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// shift the URLSegments to the right by diff
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void ShiftFromAuthority(int32_t diff);
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void ShiftFromUsername(int32_t diff);
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void ShiftFromPassword(int32_t diff);
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void ShiftFromHost(int32_t diff);
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void ShiftFromPath(int32_t diff);
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void ShiftFromFilepath(int32_t diff);
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void ShiftFromDirectory(int32_t diff);
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void ShiftFromBasename(int32_t diff);
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void ShiftFromExtension(int32_t diff);
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void ShiftFromQuery(int32_t diff);
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void ShiftFromRef(int32_t diff);
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// fastload helper functions
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nsresult ReadSegment(nsIBinaryInputStream *, URLSegment &);
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nsresult WriteSegment(nsIBinaryOutputStream *, const URLSegment &);
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static void PrefsChanged(nsIPrefBranch *prefs, const char *pref);
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void FindHostLimit(nsACString::const_iterator& aStart,
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nsACString::const_iterator& aEnd);
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// mSpec contains the normalized version of the URL spec (UTF-8 encoded).
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nsCString mSpec;
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int32_t mDefaultPort;
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int32_t mPort;
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// url parts (relative to mSpec)
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URLSegment mScheme;
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URLSegment mAuthority;
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URLSegment mUsername;
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URLSegment mPassword;
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URLSegment mHost;
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URLSegment mPath;
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URLSegment mFilepath;
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URLSegment mDirectory;
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URLSegment mBasename;
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URLSegment mExtension;
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URLSegment mQuery;
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URLSegment mRef;
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nsCOMPtr<nsIURLParser> mParser;
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// mFile is protected so subclasses can access it directly
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protected:
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nsCOMPtr<nsIFile> mFile; // cached result for nsIFileURL::GetFile
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private:
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// cached result for nsIURI::GetDisplayHost
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nsCString mDisplayHost;
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enum {
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eEncoding_Unknown,
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eEncoding_ASCII,
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eEncoding_UTF8
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};
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uint32_t mSpecEncoding : 2; // eEncoding_xxx
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uint32_t mURLType : 2; // nsIStandardURL::URLTYPE_xxx
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uint32_t mMutable : 1; // nsIStandardURL::mutable
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uint32_t mSupportsFileURL : 1; // QI to nsIFileURL?
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uint32_t mCheckedIfHostA : 1; // If set to true, it means either that
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// mDisplayHost has a been initialized, or
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// that the hostname is not punycode
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// global objects. don't use COMPtr as its destructor will cause a
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// coredump if we leak it.
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static nsIIDNService *gIDN;
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static const char gHostLimitDigits[];
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static bool gInitialized;
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static bool gPunycodeHost;
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public:
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#ifdef DEBUG_DUMP_URLS_AT_SHUTDOWN
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void PrintSpec() const { printf(" %s\n", mSpec.get()); }
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#endif
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};
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#define NS_THIS_STANDARDURL_IMPL_CID \
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{ /* b8e3e97b-1ccd-4b45-af5a-79596770f5d7 */ \
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0xb8e3e97b, \
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0x1ccd, \
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0x4b45, \
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{0xaf, 0x5a, 0x79, 0x59, 0x67, 0x70, 0xf5, 0xd7} \
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}
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//-----------------------------------------------------------------------------
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// Dependent substring getters
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//-----------------------------------------------------------------------------
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inline const nsDependentCSubstring
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nsStandardURL::Segment(uint32_t pos, int32_t len)
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{
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if (len < 0) {
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pos = 0;
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len = 0;
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}
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return Substring(mSpec, pos, uint32_t(len));
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}
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inline const nsDependentCSubstring
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nsStandardURL::Prepath()
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{
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uint32_t len = 0;
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if (mAuthority.mLen >= 0)
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len = mAuthority.mPos + mAuthority.mLen;
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return Substring(mSpec, 0, len);
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}
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inline const nsDependentCSubstring
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nsStandardURL::Userpass(bool includeDelim)
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{
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uint32_t pos=0, len=0;
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// if there is no username, then there can be no password
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if (mUsername.mLen > 0) {
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pos = mUsername.mPos;
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len = mUsername.mLen;
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if (mPassword.mLen >= 0)
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len += (mPassword.mLen + 1);
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if (includeDelim)
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len++;
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}
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return Substring(mSpec, pos, len);
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}
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inline const nsDependentCSubstring
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nsStandardURL::Hostport()
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{
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uint32_t pos=0, len=0;
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if (mAuthority.mLen > 0) {
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pos = mHost.mPos;
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len = mAuthority.mPos + mAuthority.mLen - pos;
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}
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return Substring(mSpec, pos, len);
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}
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inline const nsDependentCSubstring
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nsStandardURL::Host()
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{
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uint32_t pos=0, len=0;
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if (mHost.mLen > 0) {
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pos = mHost.mPos;
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len = mHost.mLen;
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if (mSpec.CharAt(pos) == '[' && mSpec.CharAt(pos + len - 1) == ']') {
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pos++;
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len -= 2;
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}
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}
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return Substring(mSpec, pos, len);
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}
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inline const nsDependentCSubstring
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nsStandardURL::Filename()
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{
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uint32_t pos=0, len=0;
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// if there is no basename, then there can be no extension
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if (mBasename.mLen > 0) {
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pos = mBasename.mPos;
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len = mBasename.mLen;
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if (mExtension.mLen >= 0)
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len += (mExtension.mLen + 1);
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}
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return Substring(mSpec, pos, len);
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}
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} // namespace net
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} // namespace mozilla
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#endif // nsStandardURL_h__
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