src/authority.h

   1 /*
   2  * Copyright (c) 2000-2004 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   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
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24
  25 //
  26 // authority - authorization manager
  27 //
  28 #ifndef _H_AUTHORITY
  29 #define _H_AUTHORITY
  30
  31 #include <security_cdsa_utilities/AuthorizationData.h>
  32 #include <security_utilities/osxcode.h>
  33 #include <security_utilities/ccaudit.h>
  34 #include "database.h"
  35
  36 using Authorization::Credential;
  37 using Authorization::CredentialSet;
  38 using Authorization::AuthItemSet;
  39 using Security::CommonCriteria::AuditToken;
  40
  41 class Process;
  42 class Session;
  43
  44 class AuthorizationToken : public PerSession {
  45 public:
  46         AuthorizationToken(Session &ssn, const CredentialSet &base, const audit_token_t &auditToken);
  47         ~AuthorizationToken();
  48
  49     Session &session() const;
  50
  51         const AuthorizationBlob &handle() const         { return mHandle; }
  52         const CredentialSet &baseCreds() const          { return mBaseCreds; }
  53         CredentialSet effectiveCreds() const;
  54
  55         typedef CredentialSet::iterator iterator;
  56         iterator begin()                { return mBaseCreds.begin(); }
  57         iterator end()                  { return mBaseCreds.end(); }
  58
  59         // add more credential dependencies
  60         void mergeCredentials(const CredentialSet &more);
  61
  62         // maintain process-owning links
  63         void addProcess(Process &proc);
  64         bool endProcess(Process &proc);
  65
  66         // access control for external representations
  67         bool mayExternalize(Process &proc) const;
  68         bool mayInternalize(Process &proc, bool countIt = true);
  69
  70         uid_t creatorUid() const        { return mCreatorUid; }
  71         gid_t creatorGid() const        { return mCreatorGid; }
  72     OSXCode *creatorCode() const { return mCreatorCode; }
  73         pid_t creatorPid() const        { return mCreatorPid; }
  74
  75         const AuditToken &creatorAuditToken() const { return mCreatorAuditToken; }
  76
  77         AuthItemSet infoSet(AuthorizationString tag = NULL);
  78     void setInfoSet(AuthItemSet &newInfoSet);
  79     void setCredentialInfo(const Credential &inCred);
  80     void clearInfoSet();
  81         void scrubInfoSet();
  82
  83 public:
  84         static AuthorizationToken &find(const AuthorizationBlob &blob);
  85
  86     class Deleter {
  87     public:
  88         Deleter(const AuthorizationBlob &blob);
  89
  90         void remove();
  91         operator AuthorizationToken &() const   { return *mAuth; }
  92
  93     private:
  94         AuthorizationToken *mAuth;
  95         StLock<Mutex> lock;
  96     };
  97
  98 private:
  99         Mutex mLock;                                    // object lock
 100         AuthorizationBlob mHandle;              // official randomized blob marker
 101         CredentialSet mBaseCreds;               // credentials we're based on
 102
 103         unsigned int mTransferCount;    // number of internalizations remaining
 104
 105         typedef set<Process *> ProcessSet;
 106         ProcessSet mUsingProcesses;             // set of process objects using this token
 107
 108         uid_t mCreatorUid;                              // Uid of process that created this authorization
 109         gid_t mCreatorGid;                              // Gid of process that created this authorization
 110     RefPointer<OSXCode> mCreatorCode; // code id of creator
 111         pid_t mCreatorPid;                              // Pid of processs that created this authorization
 112
 113         AuditToken mCreatorAuditToken;  // Audit token of the process that created this authorization
 114
 115     AuthItemSet mInfoSet;                       // Side band info gathered from evaluations in this session
 116
 117 private:
 118         typedef map<AuthorizationBlob, RefPointer<AuthorizationToken> > AuthMap;
 119         static AuthMap &authMap;                        // set of extant authorizations
 120     static Mutex authMapLock;           // lock for mAuthorizations (only)
 121 };
 122
 123
 124
 125
 126 #endif //_H_AUTHORITY