Security-57031.1.35.tar.gz

[apple/security.git] / Security / libsecurity_cdsa_utilities / lib / acl_process.h

diff --git a/Security/libsecurity_cdsa_utilities/lib/acl_process.h b/Security/libsecurity_cdsa_utilities/lib/acl_process.h
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+/*
+ * Copyright (c) 2000-2004,2006,2011,2014 Apple Inc. All Rights Reserved.
+ * 
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+
+//
+// acl_process - Process-attribute ACL subject type.
+//
+// NOTE:
+// The default Environment provides data about the current process (the one that
+// validate() is run in). If this isn't right for you (e.g. because you want to
+// validate against a process on the other side of some IPC connection), you must
+// make your own version of Environment and pass it to validate().
+//
+#ifndef _ACL_PROCESS
+#define _ACL_PROCESS
+
+#include <security_cdsa_utilities/cssmacl.h>
+#include <string>
+
+namespace Security
+{
+
+class AclProcessSubjectSelector
+    : public PodWrapper<AclProcessSubjectSelector, CSSM_ACL_PROCESS_SUBJECT_SELECTOR> {
+public:
+    AclProcessSubjectSelector()
+    { version = CSSM_ACL_PROCESS_SELECTOR_CURRENT_VERSION; mask = 0; }
+    
+    bool uses(uint32 m) const { return mask & m; }
+};
+
+
+//
+// The ProcessAclSubject matches process attributes securely identified
+// by the system across IPC channels.
+//
+class ProcessAclSubject : public AclSubject {
+public:
+    bool validate(const AclValidationContext &baseCtx) const;
+    CssmList toList(Allocator &alloc) const;
+
+    ProcessAclSubject(const AclProcessSubjectSelector &selector)
+    : AclSubject(CSSM_ACL_SUBJECT_TYPE_PROCESS),
+      select(selector) { }
+
+    void exportBlob(Writer::Counter &pub, Writer::Counter &priv);
+    void exportBlob(Writer &pub, Writer &priv);
+       
+       IFDUMP(void debugDump() const);
+    
+public:
+    class Environment : public virtual AclValidationEnvironment {
+    public:
+        virtual uid_t getuid() const;  // retrieve effective userid to match
+        virtual gid_t getgid() const;  // retrieve effective groupid to match
+    };
+    
+public:
+    class Maker : public AclSubject::Maker {
+    public:
+       Maker() : AclSubject::Maker(CSSM_ACL_SUBJECT_TYPE_PROCESS) { }
+       ProcessAclSubject *make(const TypedList &list) const;
+       ProcessAclSubject *make(Version, Reader &pub, Reader &priv) const;
+    };
+
+private:
+    AclProcessSubjectSelector select;
+};
+
+} // end namespace Security
+
+
+#endif //_ACL_PROCESS