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+/* -*- Mode: C++; tab-width: 2; 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/. */
+
+#include "nsISupports.idl"
+interface nsIURI;
+interface nsIObjectInputStream;
+interface nsIURIMutator;
+
+%{C++
+#include "nsString.h"
+#include "nsCOMPtr.h"
+#include <utility>
+
+#undef SetPort // XXX Windows!
+
+namespace mozilla {
+class Encoding;
+}
+
+namespace mozilla {
+namespace ipc {
+class URIParams;
+} // namespace ipc
+} // namespace mozilla
+
+template <class T>
+class BaseURIMutator
+{
+// This is the base class that can be extended by implementors of nsIURIMutator
+// in order to avoid code duplication
+// Class type T should be the type of the class that implements nsIURI
+protected:
+ virtual T* Create()
+ {
+ return new T();
+ }
+
+ [[nodiscard]] nsresult InitFromURI(T* aURI)
+ {
+ nsCOMPtr<nsIURI> clone;
+ nsresult rv = aURI->Clone(getter_AddRefs(clone));
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+ mURI = static_cast<T*>(clone.get());
+ return NS_OK;
+ }
+
+ [[nodiscard]] nsresult InitFromInputStream(nsIObjectInputStream* aStream)
+ {
+ RefPtr<T> uri = Create();
+ nsresult rv = uri->ReadPrivate(aStream);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+ mURI = std::move(uri);
+ return NS_OK;
+ }
+
+ [[nodiscard]] nsresult InitFromIPCParams(const mozilla::ipc::URIParams& aParams)
+ {
+ RefPtr<T> uri = Create();
+ bool ret = uri->Deserialize(aParams);
+ if (!ret) {
+ return NS_ERROR_FAILURE;
+ }
+ mURI = std::move(uri);
+ return NS_OK;
+ }
+
+ [[nodiscard]] nsresult InitFromSpec(const nsACString& aSpec)
+ {
+ nsresult rv = NS_OK;
+ RefPtr<T> uri;
+ if (mURI) {
+ // This only works because all other Init methods create a new object
+ mURI.swap(uri);
+ } else {
+ uri = Create();
+ }
+
+ rv = uri->SetSpecInternal(aSpec);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+ mURI = std::move(uri);
+ return NS_OK;
+ }
+
+ RefPtr<T> mURI;
+};
+
+// Since most implementations of nsIURIMutator would extend BaseURIMutator,
+// some methods would have the same implementation. We provide a useful macro
+// to avoid code duplication.
+#define NS_DEFINE_NSIMUTATOR_COMMON \
+ [[nodiscard]] NS_IMETHOD \
+ Deserialize(const mozilla::ipc::URIParams& aParams) override \
+ { \
+ return InitFromIPCParams(aParams); \
+ } \
+ \
+ [[nodiscard]] NS_IMETHOD \
+ Finalize(nsIURI** aURI) override \
+ { \
+ mURI.forget(aURI); return NS_OK; \
+ } \
+ \
+ [[nodiscard]] NS_IMETHOD \
+ SetSpec(const nsACString& aSpec, nsIURIMutator** aMutator) override \
+ { \
+ if (aMutator) NS_ADDREF(*aMutator = this); \
+ return InitFromSpec(aSpec); \
+ } \
+
+// Implements AddRef, Release and QueryInterface for the mutator
+#define NS_IMPL_NSIURIMUTATOR_ISUPPORTS(aClass, ...) \
+ NS_IMPL_ADDREF(aClass) \
+ NS_IMPL_RELEASE(aClass) \
+ NS_IMPL_NSIURIMUTATOR_QUERY_INTERFACE(aClass, __VA_ARGS__) \
+
+// The list of interfaces is queried and an AddRef-ed pointer is returned if
+// there is a match. Otherwise, we call QueryInterface on mURI and return.
+// The reason for this specialized QueryInterface implementation is that we
+// we want to be able to instantiate the mutator for a given CID of a
+// nsIURI implementation, call nsISerializable.Read() on the mutator to
+// deserialize the URI then QueryInterface the mutator to an nsIURI interface.
+// See bug 1442239.
+// If you QueryInterface a mutator to an interface of the URI
+// implementation this is similar to calling Finalize.
+#define NS_IMPL_NSIURIMUTATOR_QUERY_INTERFACE(aClass, ...) \
+ static_assert(MOZ_ARG_COUNT(__VA_ARGS__) > 0, \
+ "Need more arguments"); \
+ NS_INTERFACE_MAP_BEGIN(aClass) \
+ nsCOMPtr<nsIURI> uri; \
+ NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIURIMutator) \
+ MOZ_FOR_EACH(NS_INTERFACE_MAP_ENTRY, (), (__VA_ARGS__)) \
+ if (aIID.Equals(NS_GET_IID(nsIClassInfo))) { \
+ foundInterface = nullptr; \
+ } else \
+ if (mURI && \
+ NS_SUCCEEDED(mURI->QueryInterface(aIID, getter_AddRefs(uri)))) { \
+ mURI = nullptr; \
+ foundInterface = uri.get(); \
+ } else \
+ NS_INTERFACE_MAP_END \
+
+%}
+
+[ptr] native Encoding(const mozilla::Encoding);
+[ref] native const_URIParams_ref(const mozilla::ipc::URIParams);
+
+[scriptable, builtinclass, uuid(1fc53257-898b-4c5e-b69c-05bc84b4cd8f)]
+interface nsIURISetSpec : nsISupports
+{
+ /**
+ * This setter is different from all other setters because it may be used to
+ * initialize the object. We define it separately allowing mutator implementors
+ * to define it separately, while the rest of the setters may be simply
+ * forwarded to the mutable URI.
+ */
+ [must_use] nsIURIMutator setSpec(in AUTF8String aSpec);
+};
+
+/**
+ * These methods allow the mutator to change various parts of the URI.
+ * They return the same nsIURIMutator so that we may chain setter operations:
+ * Example:
+ * let newURI = uri.mutate()
+ * .setSpec("http://example.com")
+ * .setQuery("hello")
+ * .finalize();
+ */
+[scriptable, builtinclass, uuid(5403a6ec-99d7-405e-8b45-9f805bbdfcef)]
+interface nsIURISetters : nsIURISetSpec
+{
+ /**
+ * Setting the scheme outside of a protocol handler implementation is highly
+ * discouraged since that will generally lead to incorrect results.
+ */
+ [must_use] nsIURIMutator setScheme(in AUTF8String aScheme);
+ [must_use] nsIURIMutator setUserPass(in AUTF8String aUserPass);
+ [must_use] nsIURIMutator setUsername(in AUTF8String aUsername);
+ [must_use] nsIURIMutator setPassword(in AUTF8String aPassword);
+
+ /**
+ * If you setHostPort to a value that only has a host part, the port
+ * will not be reset. To reset the port set it to -1 beforehand.
+ * If setting the host succeeds, this method will return NS_OK, even if
+ * setting the port fails (error in parsing the port, or value out of range)
+ */
+ [must_use] nsIURIMutator setHostPort(in AUTF8String aHostPort);
+ [must_use] nsIURIMutator setHost(in AUTF8String aHost);
+ [must_use] nsIURIMutator setPort(in long aPort);
+ [must_use] nsIURIMutator setPathQueryRef(in AUTF8String aPathQueryRef);
+ [must_use] nsIURIMutator setRef(in AUTF8String aRef);
+ [must_use] nsIURIMutator setFilePath(in AUTF8String aFilePath);
+ [must_use] nsIURIMutator setQuery(in AUTF8String aQuery);
+ [must_use, noscript] nsIURIMutator setQueryWithEncoding(in AUTF8String query, in Encoding encoding);
+};
+
+%{C++
+
+// Using this macro instead of NS_FORWARD_SAFE_NSIURISETTERS makes chaining
+// setter operations possible.
+#define NS_FORWARD_SAFE_NSIURISETTERS_RET(_to) \
+ [[nodiscard]] NS_IMETHOD \
+ SetScheme(const nsACString& aScheme, nsIURIMutator** aMutator) override \
+ { \
+ if (aMutator) NS_ADDREF(*aMutator = this); \
+ return !_to ? NS_ERROR_NULL_POINTER : _to->SetScheme(aScheme); \
+ } \
+ [[nodiscard]] NS_IMETHOD \
+ SetUserPass(const nsACString& aUserPass, nsIURIMutator** aMutator) override \
+ { \
+ if (aMutator) NS_ADDREF(*aMutator = this); \
+ return !_to ? NS_ERROR_NULL_POINTER : _to->SetUserPass(aUserPass); \
+ } \
+ [[nodiscard]] NS_IMETHOD \
+ SetUsername(const nsACString& aUsername, nsIURIMutator** aMutator) override \
+ { \
+ if (aMutator) NS_ADDREF(*aMutator = this); \
+ return !_to ? NS_ERROR_NULL_POINTER : _to->SetUsername(aUsername); \
+ } \
+ [[nodiscard]] NS_IMETHOD \
+ SetPassword(const nsACString& aPassword, nsIURIMutator** aMutator) override \
+ { \
+ if (aMutator) NS_ADDREF(*aMutator = this); \
+ return !_to ? NS_ERROR_NULL_POINTER : _to->SetPassword(aPassword); \
+ } \
+ [[nodiscard]] NS_IMETHOD \
+ SetHostPort(const nsACString& aHostPort, nsIURIMutator** aMutator) override \
+ { \
+ if (aMutator) NS_ADDREF(*aMutator = this); \
+ return !_to ? NS_ERROR_NULL_POINTER : _to->SetHostPort(aHostPort); \
+ } \
+ [[nodiscard]] NS_IMETHOD \
+ SetHost(const nsACString& aHost, nsIURIMutator** aMutator) override \
+ { \
+ if (aMutator) NS_ADDREF(*aMutator = this); \
+ return !_to ? NS_ERROR_NULL_POINTER : _to->SetHost(aHost); \
+ } \
+ [[nodiscard]] NS_IMETHOD \
+ SetPort(int32_t aPort, nsIURIMutator** aMutator) override \
+ { \
+ if (aMutator) NS_ADDREF(*aMutator = this); \
+ return !_to ? NS_ERROR_NULL_POINTER : _to->SetPort(aPort); \
+ } \
+ [[nodiscard]] NS_IMETHOD \
+ SetPathQueryRef(const nsACString& aPathQueryRef, nsIURIMutator** aMutator) override \
+ { \
+ if (aMutator) NS_ADDREF(*aMutator = this); \
+ return !_to ? NS_ERROR_NULL_POINTER : _to->SetPathQueryRef(aPathQueryRef); \
+ } \
+ [[nodiscard]] NS_IMETHOD \
+ SetRef(const nsACString& aRef, nsIURIMutator** aMutator) override \
+ { \
+ if (aMutator) NS_ADDREF(*aMutator = this); \
+ return !_to ? NS_ERROR_NULL_POINTER : _to->SetRef(aRef); \
+ } \
+ [[nodiscard]] NS_IMETHOD \
+ SetFilePath(const nsACString& aFilePath, nsIURIMutator** aMutator) override \
+ { \
+ if (aMutator) NS_ADDREF(*aMutator = this); \
+ return !_to ? NS_ERROR_NULL_POINTER : _to->SetFilePath(aFilePath); \
+ } \
+ [[nodiscard]] NS_IMETHOD \
+ SetQuery(const nsACString& aQuery, nsIURIMutator** aMutator) override \
+ { \
+ if (aMutator) NS_ADDREF(*aMutator = this); \
+ return !_to ? NS_ERROR_NULL_POINTER : _to->SetQuery(aQuery); \
+ } \
+ [[nodiscard]] NS_IMETHOD \
+ SetQueryWithEncoding(const nsACString& query, const mozilla::Encoding *encoding, nsIURIMutator** aMutator) override \
+ { \
+ if (aMutator) NS_ADDREF(*aMutator = this); \
+ return !_to ? NS_ERROR_NULL_POINTER : _to->SetQueryWithEncoding(query, encoding); \
+ } \
+
+%}
+
+[scriptable, builtinclass, uuid(4d1f3103-1c44-4dcd-b717-5d22a697a7d9)]
+interface nsIURIMutator : nsIURISetters
+{
+ /**
+ * Initalizes the URI by reading IPC URIParams.
+ * See nsIURI.
+ */
+ [noscript, notxpcom, must_use]
+ nsresult deserialize(in const_URIParams_ref aParams);
+
+ /**
+ * Finishes changing or constructing the URI and returns an immutable URI.
+ */
+ [must_use]
+ nsIURI finalize();
+};
+
+%{C++
+
+// This templated struct is used to extract the class type of the method
+template <typename Method>
+struct nsMethodTypeTraits;
+
+template <class C, typename R, typename... As>
+struct nsMethodTypeTraits<R(C::*)(As...)>
+{
+ typedef C class_type;
+};
+
+#ifdef NS_HAVE_STDCALL
+template <class C, typename R, typename... As>
+struct nsMethodTypeTraits<R(__stdcall C::*)(As...)>
+{
+ typedef C class_type;
+};
+#endif
+
+
+// This class provides a useful helper that allows chaining of setter operations
+class MOZ_STACK_CLASS NS_MutateURI
+{
+public:
+ explicit NS_MutateURI(nsIURI* aURI);
+ explicit NS_MutateURI(const char * aContractID);
+
+ explicit NS_MutateURI(nsIURIMutator* m)
+ {
+ mStatus = m ? NS_OK : NS_ERROR_NULL_POINTER;
+ mMutator = m;
+ NS_ENSURE_SUCCESS_VOID(mStatus);
+ }
+
+ NS_MutateURI& SetSpec(const nsACString& aSpec)
+ {
+ if (NS_FAILED(mStatus)) {
+ return *this;
+ }
+ mStatus = mMutator->SetSpec(aSpec, nullptr);
+ return *this;
+ }
+ NS_MutateURI& SetScheme(const nsACString& aScheme)
+ {
+ if (NS_FAILED(mStatus)) {
+ return *this;
+ }
+ mStatus = mMutator->SetScheme(aScheme, nullptr);
+ NS_ENSURE_SUCCESS(mStatus, *this);
+ return *this;
+ }
+ NS_MutateURI& SetUserPass(const nsACString& aUserPass)
+ {
+ if (NS_FAILED(mStatus)) {
+ return *this;
+ }
+ mStatus = mMutator->SetUserPass(aUserPass, nullptr);
+ return *this;
+ }
+ NS_MutateURI& SetUsername(const nsACString& aUsername)
+ {
+ if (NS_FAILED(mStatus)) {
+ return *this;
+ }
+ mStatus = mMutator->SetUsername(aUsername, nullptr);
+ NS_ENSURE_SUCCESS(mStatus, *this);
+ return *this;
+ }
+ NS_MutateURI& SetPassword(const nsACString& aPassword)
+ {
+ if (NS_FAILED(mStatus)) {
+ return *this;
+ }
+ mStatus = mMutator->SetPassword(aPassword, nullptr);
+ NS_ENSURE_SUCCESS(mStatus, *this);
+ return *this;
+ }
+ NS_MutateURI& SetHostPort(const nsACString& aHostPort)
+ {
+ if (NS_FAILED(mStatus)) {
+ return *this;
+ }
+ mStatus = mMutator->SetHostPort(aHostPort, nullptr);
+ NS_ENSURE_SUCCESS(mStatus, *this);
+ return *this;
+ }
+ NS_MutateURI& SetHost(const nsACString& aHost)
+ {
+ if (NS_FAILED(mStatus)) {
+ return *this;
+ }
+ mStatus = mMutator->SetHost(aHost, nullptr);
+ NS_ENSURE_SUCCESS(mStatus, *this);
+ return *this;
+ }
+ NS_MutateURI& SetPort(int32_t aPort)
+ {
+ if (NS_FAILED(mStatus)) {
+ return *this;
+ }
+ mStatus = mMutator->SetPort(aPort, nullptr);
+ NS_ENSURE_SUCCESS(mStatus, *this);
+ return *this;
+ }
+ NS_MutateURI& SetPathQueryRef(const nsACString& aPathQueryRef)
+ {
+ if (NS_FAILED(mStatus)) {
+ return *this;
+ }
+ mStatus = mMutator->SetPathQueryRef(aPathQueryRef, nullptr);
+ NS_ENSURE_SUCCESS(mStatus, *this);
+ return *this;
+ }
+ NS_MutateURI& SetRef(const nsACString& aRef)
+ {
+ if (NS_FAILED(mStatus)) {
+ return *this;
+ }
+ mStatus = mMutator->SetRef(aRef, nullptr);
+ NS_ENSURE_SUCCESS(mStatus, *this);
+ return *this;
+ }
+ NS_MutateURI& SetFilePath(const nsACString& aFilePath)
+ {
+ if (NS_FAILED(mStatus)) {
+ return *this;
+ }
+ mStatus = mMutator->SetFilePath(aFilePath, nullptr);
+ NS_ENSURE_SUCCESS(mStatus, *this);
+ return *this;
+ }
+ NS_MutateURI& SetQuery(const nsACString& aQuery)
+ {
+ if (NS_FAILED(mStatus)) {
+ return *this;
+ }
+ mStatus = mMutator->SetQuery(aQuery, nullptr);
+ NS_ENSURE_SUCCESS(mStatus, *this);
+ return *this;
+ }
+ NS_MutateURI& SetQueryWithEncoding(const nsACString& query, const mozilla::Encoding *encoding)
+ {
+ if (NS_FAILED(mStatus)) {
+ return *this;
+ }
+ mStatus = mMutator->SetQueryWithEncoding(query, encoding, nullptr);
+ NS_ENSURE_SUCCESS(mStatus, *this);
+ return *this;
+ }
+
+ /**
+ * This method allows consumers to call the methods declared in other
+ * interfaces implemented by the mutator object.
+ *
+ * Example:
+ * nsCOMPtr<nsIURI> uri;
+ * nsresult rv = NS_MutateURI(new URIClass::Mutator())
+ * .SetSpec(aSpec)
+ * .Apply(&SomeInterface::Method, arg1, arg2)
+ * .Finalize(uri);
+ *
+ * If mMutator does not implement SomeInterface, do_QueryInterface will fail
+ * and the method will not be called.
+ * If aMethod does not exist, or if there is a mismatch between argument
+ * types, or the number of arguments, then there will be a compile error.
+ */
+ template <typename Method, typename... Args>
+ NS_MutateURI& Apply(Method aMethod, Args&&... aArgs)
+ {
+ typedef typename nsMethodTypeTraits<Method>::class_type Interface;
+ NS_ENSURE_SUCCESS(mStatus, *this);
+ nsCOMPtr<Interface> target = do_QueryInterface(mMutator, &mStatus);
+ MOZ_ASSERT(NS_SUCCEEDED(mStatus), "URL object must implement interface");
+ NS_ENSURE_SUCCESS(mStatus, *this);
+ mStatus = (target->*aMethod)(std::forward<Args>(aArgs)...);
+ return *this;
+ }
+
+ template <class C>
+ [[nodiscard]] nsresult Finalize(nsCOMPtr<C>& aURI)
+ {
+ NS_ENSURE_SUCCESS(mStatus, mStatus);
+
+ nsCOMPtr<nsIURI> uri;
+ mStatus = mMutator->Finalize(getter_AddRefs(uri));
+ NS_ENSURE_SUCCESS(mStatus, mStatus);
+
+ aURI = do_QueryInterface(uri, &mStatus);
+ NS_ENSURE_SUCCESS(mStatus, mStatus);
+
+ mStatus = NS_ERROR_NOT_AVAILABLE; // Second call to Finalize should fail.
+ return NS_OK;
+ }
+
+ // Overload for nsIURI to avoid query interface.
+ [[nodiscard]] nsresult Finalize(nsCOMPtr<nsIURI>& aURI)
+ {
+ if (NS_FAILED(mStatus)) return mStatus;
+ mStatus = mMutator->Finalize(getter_AddRefs(aURI));
+ NS_ENSURE_SUCCESS(mStatus, mStatus);
+
+ mStatus = NS_ERROR_NOT_AVAILABLE; // Second call to Finalize should fail.
+ return NS_OK;
+ }
+
+ template <class C>
+ [[nodiscard]] nsresult Finalize(C** aURI)
+ {
+ NS_ENSURE_SUCCESS(mStatus, mStatus);
+
+ nsCOMPtr<nsIURI> uri;
+ mStatus = mMutator->Finalize(getter_AddRefs(uri));
+ NS_ENSURE_SUCCESS(mStatus, mStatus);
+
+ nsCOMPtr<C> result = do_QueryInterface(uri, &mStatus);
+ NS_ENSURE_SUCCESS(mStatus, mStatus);
+
+ result.forget(aURI);
+ mStatus = NS_ERROR_NOT_AVAILABLE; // Second call to Finalize should fail.
+ return NS_OK;
+ }
+
+ [[nodiscard]] nsresult Finalize(nsIURI** aURI)
+ {
+ if (NS_FAILED(mStatus)) return mStatus;
+ mStatus = mMutator->Finalize(aURI);
+ NS_ENSURE_SUCCESS(mStatus, mStatus);
+
+ mStatus = NS_ERROR_NOT_AVAILABLE; // Second call to Finalize should fail.
+ return NS_OK;
+ }
+
+ nsresult GetStatus() { return mStatus; }
+private:
+ nsresult mStatus;
+ nsCOMPtr<nsIURIMutator> mMutator;
+};
+
+%}