securityd/src/process.h

   1 /*
   2  * Copyright (c) 2000-2009 Apple Inc. All Rights Reserved.
   3  *
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   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
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   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
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  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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  23
  24
  25 //
  26 // process - track a single client process and its belongings
  27 //
  28 #ifndef _H_PROCESS
  29 #define _H_PROCESS
  30
  31 #include "structure.h"
  32 #include "session.h"
  33 #include <security_utilities/refcount.h>
  34 #include <security_utilities/ccaudit.h>
  35 #include "clientid.h"
  36 #include "localkey.h"
  37 #include "notifications.h"
  38 #include <string>
  39
  40 using MachPlusPlus::Port;
  41 using MachPlusPlus::TaskPort;
  42
  43 class Session;
  44 class LocalDatabase;
  45 class AuthorizationToken;
  46
  47
  48 //
  49 // A Process object represents a UNIX process (and associated Mach Task) that has
  50 // had contact with us and may have some state associated with it. It primarily tracks
  51 // the process nature of the client. Individual threads in the client are tracked by
  52 // Connection objects.
  53 //
  54 // ClientIdentification tracks the identity of guests in the client *as securityd clients*.
  55 // It is concerned with which guest is asking for securityd services, and whether this
  56 // should be granted.
  57 //
  58 class Process : public PerProcess,
  59                                 public ClientIdentification{
  60 public:
  61         Process(TaskPort tPort, const ClientSetupInfo *info, const CommonCriteria::AuditToken &audit);
  62         virtual ~Process();
  63
  64         void reset(TaskPort tPort, const ClientSetupInfo *info, const CommonCriteria::AuditToken &audit);
  65
  66     uid_t uid() const                   { return mUid; }
  67     gid_t gid() const                   { return mGid; }
  68     pid_t pid() const                   { return mPid; }
  69     Security::CommonCriteria::AuditToken const &audit_token() const { return mAudit; }
  70     TaskPort taskPort() const   { return mTaskPort; }
  71         bool byteFlipped() const        { return mByteFlipped; }
  72
  73         using PerProcess::kill;
  74         void kill();
  75
  76         void changeSession(Session::SessionId sessionId);
  77
  78         Session& session() const;
  79         void checkSession(const audit_token_t &auditToken);
  80
  81         LocalDatabase &localStore();
  82         Key *makeTemporaryKey(const CssmKey &key, CSSM_KEYATTR_FLAGS moreAttributes,
  83                 const AclEntryPrototype *owner);
  84
  85         // aclSequence is taken to serialize ACL validations to pick up mutual changes
  86         Mutex aclSequence;
  87
  88     // Dumping is buggy and only hurts debugging. It's dead Jim.
  89         //IFDUMP(void dumpNode());
  90
  91 private:
  92         void setup(const ClientSetupInfo *info);
  93
  94 private:
  95         // peer state: established during connection startup; fixed thereafter
  96     TaskPort mTaskPort;                                 // task port
  97         bool mByteFlipped;                                      // client's byte order is reverse of ours
  98     pid_t mPid;                                                 // process id
  99     uid_t mUid;                                                 // UNIX uid credential
 100     gid_t mGid;                                                 // primary UNIX gid credential
 101
 102     Security::CommonCriteria::AuditToken const mAudit; // audit token
 103
 104         // canonical local (transient) key store
 105         RefPointer<LocalDatabase> mLocalStore;
 106 };
 107
 108
 109 //
 110 // Convenience comparison
 111 //
 112 inline bool operator == (const Process &p1, const Process &p2)
 113 {
 114         return &p1 == &p2;
 115 }
 116
 117
 118 #endif //_H_PROCESS