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/*
* Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SecurityOrigin_h
#define SecurityOrigin_h
#include <wtf/ThreadSafeRefCounted.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class KURL;
class SecurityOrigin : public ThreadSafeRefCounted<SecurityOrigin> {
public:
enum Policy {
AlwaysDeny = 0,
AlwaysAllow,
Ask
};
enum StorageBlockingPolicy {
AllowAllStorage = 0,
BlockThirdPartyStorage,
BlockAllStorage
};
static PassRefPtr<SecurityOrigin> create(const KURL&);
static PassRefPtr<SecurityOrigin> createUnique();
static PassRefPtr<SecurityOrigin> createFromDatabaseIdentifier(const String&);
static PassRefPtr<SecurityOrigin> createFromString(const String&);
static PassRefPtr<SecurityOrigin> create(const String& protocol, const String& host, int port);
// Some URL schemes use nested URLs for their security context. For example,
// filesystem URLs look like the following:
//
// filesystem:http://example.com/temporary/path/to/file.png
//
// We're supposed to use "http://example.com" as the origin.
//
// Generally, we add URL schemes to this list when WebKit support them. For
// example, we don't include the "jar" scheme, even though Firefox
// understands that "jar" uses an inner URL for it's security origin.
static bool shouldUseInnerURL(const KURL&);
static KURL extractInnerURL(const KURL&);
// Create a deep copy of this SecurityOrigin. This method is useful
// when marshalling a SecurityOrigin to another thread.
PassRefPtr<SecurityOrigin> isolatedCopy() const;
// Set the domain property of this security origin to newDomain. This
// function does not check whether newDomain is a suffix of the current
// domain. The caller is responsible for validating newDomain.
void setDomainFromDOM(const String& newDomain);
bool domainWasSetInDOM() const { return m_domainWasSetInDOM; }
String protocol() const { return m_protocol; }
String host() const { return m_host; }
String domain() const { return m_domain; }
unsigned short port() const { return m_port; }
// Returns true if a given URL is secure, based either directly on its
// own protocol, or, when relevant, on the protocol of its "inner URL"
// Protocols like blob: and filesystem: fall into this latter category.
static bool isSecure(const KURL&);
// Returns true if this SecurityOrigin can script objects in the given
// SecurityOrigin. For example, call this function before allowing
// script from one security origin to read or write objects from
// another SecurityOrigin.
bool canAccess(const SecurityOrigin*) const;
// Returns true if this SecurityOrigin can read content retrieved from
// the given URL. For example, call this function before issuing
// XMLHttpRequests.
bool canRequest(const KURL&) const;
// Returns true if drawing an image from this URL taints a canvas from
// this security origin. For example, call this function before
// drawing an image onto an HTML canvas element with the drawImage API.
bool taintsCanvas(const KURL&) const;
// Returns true if this SecurityOrigin can receive drag content from the
// initiator. For example, call this function before allowing content to be
// dropped onto a target.
bool canReceiveDragData(const SecurityOrigin* dragInitiator) const;
// Returns true if |document| can display content from the given URL (e.g.,
// in an iframe or as an image). For example, web sites generally cannot
// display content from the user's files system.
bool canDisplay(const KURL&) const;
// Returns true if this SecurityOrigin can load local resources, such
// as images, iframes, and style sheets, and can link to local URLs.
// For example, call this function before creating an iframe to a
// file:// URL.
//
// Note: A SecurityOrigin might be allowed to load local resources
// without being able to issue an XMLHttpRequest for a local URL.
// To determine whether the SecurityOrigin can issue an
// XMLHttpRequest for a URL, call canRequest(url).
bool canLoadLocalResources() const { return m_canLoadLocalResources; }
// Explicitly grant the ability to load local resources to this
// SecurityOrigin.
//
// Note: This method exists only to support backwards compatibility
// with older versions of WebKit.
void grantLoadLocalResources();
// Explicitly grant the ability to access very other SecurityOrigin.
//
// WARNING: This is an extremely powerful ability. Use with caution!
void grantUniversalAccess();
void setStorageBlockingPolicy(StorageBlockingPolicy policy) { m_storageBlockingPolicy = policy; }
#if ENABLE(CACHE_PARTITIONING)
String cachePartition() const;
#endif
bool canAccessDatabase(const SecurityOrigin* topOrigin = 0) const { return canAccessStorage(topOrigin); };
bool canAccessLocalStorage(const SecurityOrigin* topOrigin) const { return canAccessStorage(topOrigin); };
bool canAccessSharedWorkers(const SecurityOrigin* topOrigin) const { return canAccessStorage(topOrigin); }
bool canAccessPluginStorage(const SecurityOrigin* topOrigin) const { return canAccessStorage(topOrigin); }
bool canAccessApplicationCache(const SecurityOrigin* topOrigin) const { return canAccessStorage(topOrigin); }
bool canAccessCookies() const { return !isUnique(); }
bool canAccessPasswordManager() const { return !isUnique(); }
bool canAccessFileSystem() const { return !isUnique(); }
Policy canShowNotifications() const;
// Technically, we should always allow access to sessionStorage, but we
// currently don't handle creating a sessionStorage area for unique
// origins.
bool canAccessSessionStorage() const { return !isUnique(); }
// The local SecurityOrigin is the most privileged SecurityOrigin.
// The local SecurityOrigin can script any document, navigate to local
// resources, and can set arbitrary headers on XMLHttpRequests.
bool isLocal() const;
// The origin is a globally unique identifier assigned when the Document is
// created. http://www.whatwg.org/specs/web-apps/current-work/#sandboxOrigin
//
// There's a subtle difference between a unique origin and an origin that
// has the SandboxOrigin flag set. The latter implies the former, and, in
// addition, the SandboxOrigin flag is inherited by iframes.
bool isUnique() const { return m_isUnique; }
// Marks a file:// origin as being in a domain defined by its path.
// FIXME 81578: The naming of this is confusing. Files with restricted access to other local files
// still can have other privileges that can be remembered, thereby not making them unique.
void enforceFilePathSeparation();
// Convert this SecurityOrigin into a string. The string
// representation of a SecurityOrigin is similar to a URL, except it
// lacks a path component. The string representation does not encode
// the value of the SecurityOrigin's domain property.
//
// When using the string value, it's important to remember that it might be
// "null". This happens when this SecurityOrigin is unique. For example,
// this SecurityOrigin might have come from a sandboxed iframe, the
// SecurityOrigin might be empty, or we might have explicitly decided that
// we shouldTreatURLSchemeAsNoAccess.
String toString() const;
// Similar to toString(), but does not take into account any factors that
// could make the string return "null".
String toRawString() const;
// Serialize the security origin to a string that could be used as part of
// file names. This format should be used in storage APIs only.
String databaseIdentifier() const;
// This method checks for equality between SecurityOrigins, not whether
// one origin can access another. It is used for hash table keys.
// For access checks, use canAccess().
// FIXME: If this method is really only useful for hash table keys, it
// should be refactored into SecurityOriginHash.
bool equal(const SecurityOrigin*) const;
// This method checks for equality, ignoring the value of document.domain
// (and whether it was set) but considering the host. It is used for postMessage.
bool isSameSchemeHostPort(const SecurityOrigin*) const;
static String urlWithUniqueSecurityOrigin();
private:
SecurityOrigin();
explicit SecurityOrigin(const KURL&);
explicit SecurityOrigin(const SecurityOrigin*);
// FIXME: Rename this function to something more semantic.
bool passesFileCheck(const SecurityOrigin*) const;
bool isThirdParty(const SecurityOrigin*) const;
bool canAccessStorage(const SecurityOrigin*) const;
String m_protocol;
String m_host;
String m_domain;
String m_filePath;
unsigned short m_port;
bool m_isUnique;
bool m_universalAccess;
bool m_domainWasSetInDOM;
bool m_canLoadLocalResources;
StorageBlockingPolicy m_storageBlockingPolicy;
bool m_enforceFilePathSeparation;
bool m_needsDatabaseIdentifierQuirkForFiles;
};
} // namespace WebCore
#endif // SecurityOrigin_h