1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef CONTENT_PUBLIC_BROWSER_CHILD_PROCESS_SECURITY_POLICY_H_
6 #define CONTENT_PUBLIC_BROWSER_CHILD_PROCESS_SECURITY_POLICY_H_
10 #include "base/basictypes.h"
11 #include "content/common/content_export.h"
19 // The ChildProcessSecurityPolicy class is used to grant and revoke security
20 // capabilities for child processes. For example, it restricts whether a child
21 // process is permitted to load file:// URLs based on whether the process
22 // has ever been commanded to load file:// URLs by the browser.
24 // ChildProcessSecurityPolicy is a singleton that may be used on any thread.
26 class ChildProcessSecurityPolicy {
28 virtual ~ChildProcessSecurityPolicy() {}
30 // There is one global ChildProcessSecurityPolicy object for the entire
31 // browser process. The object returned by this method may be accessed on
33 static CONTENT_EXPORT ChildProcessSecurityPolicy* GetInstance();
35 // Web-safe schemes can be requested by any child process. Once a web-safe
36 // scheme has been registered, any child process can request URLs with
37 // that scheme. There is no mechanism for revoking web-safe schemes.
38 virtual void RegisterWebSafeScheme(const std::string& scheme) = 0;
40 // Returns true iff |scheme| has been registered as a web-safe scheme.
41 virtual bool IsWebSafeScheme(const std::string& scheme) = 0;
43 // This permission grants only read access to a file.
44 // Whenever the user picks a file from a <input type="file"> element, the
45 // browser should call this function to grant the child process the capability
46 // to upload the file to the web. Grants FILE_PERMISSION_READ_ONLY.
47 virtual void GrantReadFile(int child_id, const base::FilePath& file) = 0;
49 // This permission grants creation, read, and full write access to a file,
50 // including attributes.
51 virtual void GrantCreateReadWriteFile(int child_id,
52 const base::FilePath& file) = 0;
54 // These methods verify whether or not the child process has been granted
55 // permissions perform these functions on |file|.
57 // Before servicing a child process's request to upload a file to the web, the
58 // browser should call this method to determine whether the process has the
59 // capability to upload the requested file.
60 virtual bool CanReadFile(int child_id, const base::FilePath& file) = 0;
61 virtual bool CanCreateReadWriteFile(int child_id,
62 const base::FilePath& file) = 0;
64 // Grants read access permission to the given isolated file system
65 // identified by |filesystem_id|. An isolated file system can be
66 // created for a set of native files/directories (like dropped files)
67 // using fileapi::IsolatedContext. A child process needs to be granted
68 // permission to the file system to access the files in it using
69 // file system URL. You do NOT need to give direct permission to
70 // individual file paths.
72 // Note: files/directories in the same file system share the same
73 // permission as far as they are accessed via the file system, i.e.
74 // using the file system URL (tip: you can create a new file system
75 // to give different permission to part of files).
76 virtual void GrantReadFileSystem(int child_id,
77 const std::string& filesystem_id) = 0;
79 // Grants write access permission to the given isolated file system
80 // identified by |filesystem_id|. See comments for GrantReadFileSystem
81 // for more details. You do NOT need to give direct permission to
82 // individual file paths.
84 // This must be called with a great care as this gives write permission
85 // to all files/directories included in the file system.
86 virtual void GrantWriteFileSystem(int child_id,
87 const std::string& filesystem_id) = 0;
89 // Grants create file permission to the given isolated file system
90 // identified by |filesystem_id|. See comments for GrantReadFileSystem
91 // for more details. You do NOT need to give direct permission to
92 // individual file paths.
94 // This must be called with a great care as this gives create permission
95 // within all directories included in the file system.
96 virtual void GrantCreateFileForFileSystem(
98 const std::string& filesystem_id) = 0;
100 // Grants permission to copy-into filesystem |filesystem_id|. 'copy-into'
101 // is used to allow copying files into the destination filesystem without
102 // granting more general create and write permissions.
103 virtual void GrantCopyIntoFileSystem(int child_id,
104 const std::string& filesystem_id) = 0;
106 // Grants permission to delete from filesystem |filesystem_id|. 'delete-from'
107 // is used to allow deleting files into the destination filesystem without
108 // granting more general create and write permissions.
109 virtual void GrantDeleteFromFileSystem(int child_id,
110 const std::string& filesystem_id) = 0;
112 // Grants the child process the capability to access URLs of the provided
114 virtual void GrantScheme(int child_id, const std::string& scheme) = 0;
116 // Returns true if read access has been granted to |filesystem_id|.
117 virtual bool CanReadFileSystem(int child_id,
118 const std::string& filesystem_id) = 0;
120 // Returns true if read and write access has been granted to |filesystem_id|.
121 virtual bool CanReadWriteFileSystem(int child_id,
122 const std::string& filesystem_id) = 0;
124 // Returns true if copy-into access has been granted to |filesystem_id|.
125 virtual bool CanCopyIntoFileSystem(int child_id,
126 const std::string& filesystem_id) = 0;
128 // Returns true if delete-from access has been granted to |filesystem_id|.
129 virtual bool CanDeleteFromFileSystem(int child_id,
130 const std::string& filesystem_id) = 0;
133 } // namespace content
135 #endif // CONTENT_PUBLIC_BROWSER_CHILD_PROCESS_SECURITY_POLICY_H_