OSX/libsecurityd/lib/ssclient.h

   1 /*
   2  * Copyright (c) 2000-2008,2011-2013 Apple 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 // ssclient - SecurityServer client interface library
  27 //
  28 // This interface is private to the Security system. It is not a public interface,
  29 // and it may change at any time. You have been warned.
  30 //
  31 #ifndef _H_SSCLIENT
  32 #define _H_SSCLIENT
  33
  34 #include "sscommon.h"
  35 #include <Security/Authorization.h>
  36 #include <Security/AuthSession.h>
  37 #include <Security/SecCodeHost.h>
  38
  39 #ifdef __cplusplus
  40
  41 #include <security_utilities/osxcode.h>
  42 #include <security_utilities/unix++.h>
  43 #include <security_utilities/globalizer.h>
  44 #include <security_cdsa_utilities/cssmerrors.h>
  45 #include "ssnotify.h"
  46
  47
  48 namespace Security {
  49 namespace SecurityServer {
  50
  51 #endif //__cplusplus
  52
  53
  54 //
  55 // Unique-identifier blobs for key objects
  56 //
  57 typedef struct KeyUID {
  58     uint8 signature[20];
  59 } KeyUID;
  60
  61
  62 //
  63 // Maximum length of hash (digest) arguments (bytes)
  64 //
  65 #define maxUcspHashLength 64
  66
  67
  68 //
  69 // Authorization blobs
  70 //
  71 typedef struct AuthorizationBlob {
  72     uint32 data[2];
  73
  74 #ifdef __cplusplus
  75         bool operator < (const AuthorizationBlob &other) const
  76         { return memcmp(data, other.data, sizeof(data)) < 0; }
  77
  78         bool operator == (const AuthorizationBlob &other) const
  79         { return memcmp(data, other.data, sizeof(data)) == 0; }
  80
  81     size_t hash() const {       //@@@ revisit this hash
  82         return data[0] ^ data[1] << 3;
  83     }
  84 #endif
  85 } AuthorizationBlob;
  86
  87
  88 //
  89 // Initial-setup data for versioning etc.
  90 //
  91 typedef struct {
  92         uint32_t order;
  93         uint32_t version;
  94 } ClientSetupInfo;
  95
  96 #define SSPROTOVERSION 20000
  97
  98
  99 //
 100 // Database parameter structure
 101 //
 102 typedef struct {
 103         uint32_t idleTimeout;                           // seconds idle timout lock
 104         uint8_t lockOnSleep;                            // lock keychain when system sleeps
 105 } DBParameters;
 106
 107
 108 #ifdef __cplusplus
 109
 110
 111 //
 112 // A client connection (session)
 113 //
 114 class ClientSession : public ClientCommon {
 115 public:
 116         ClientSession(Allocator &standard = Allocator::standard(),
 117                 Allocator &returning = Allocator::standard());
 118         virtual ~ClientSession();
 119
 120 public:
 121         void activate();
 122         void reset();
 123
 124 public:
 125         // use this only if you know what you're doing...
 126         void contactName(const char *name);
 127         const char *contactName() const;
 128
 129     static GenericHandle toIPCHandle(CSSM_HANDLE h) {
 130         // implementation subject to change
 131         if (h & (CSSM_HANDLE(~0) ^ GenericHandle(~0)))
 132             CssmError::throwMe(CSSM_ERRCODE_INVALID_CONTEXT_HANDLE);
 133         return h & GenericHandle(~0);
 134     }
 135
 136
 137 public:
 138         //
 139         // common database interface
 140         //
 141         void authenticateDb(DbHandle db, CSSM_DB_ACCESS_TYPE type, const AccessCredentials *cred);
 142         void releaseDb(DbHandle db);
 143
 144         //
 145         // External database interface
 146         //
 147         DbHandle openToken(uint32 ssid, const AccessCredentials *cred, const char *name = NULL);
 148
 149         RecordHandle insertRecord(DbHandle db,
 150                                           CSSM_DB_RECORDTYPE recordType,
 151                                           const CssmDbRecordAttributeData *attributes,
 152                                           const CssmData *data);
 153         void deleteRecord(DbHandle db, RecordHandle record);
 154         void modifyRecord(DbHandle db, RecordHandle &record,
 155                                           CSSM_DB_RECORDTYPE recordType,
 156                                           const CssmDbRecordAttributeData *attributesToBeModified,
 157                                           const CssmData *dataToBeModified,
 158                                           CSSM_DB_MODIFY_MODE modifyMode);
 159
 160         RecordHandle findFirst(DbHandle db,
 161                                                 const CssmQuery &query,
 162                                                 SearchHandle &outSearchHandle,
 163                                                 CssmDbRecordAttributeData *inOutAttributes,
 164                                                 CssmData *outData, KeyHandle &key);
 165         RecordHandle findNext(SearchHandle searchHandle,
 166                                            CssmDbRecordAttributeData *inOutAttributes,
 167                                            CssmData *inOutData, KeyHandle &key);
 168         void findRecordHandle(RecordHandle record,
 169                                                  CssmDbRecordAttributeData *inOutAttributes,
 170                                                  CssmData *inOutData, KeyHandle &key);
 171         void releaseSearch(SearchHandle searchHandle);
 172         void releaseRecord(RecordHandle record);
 173
 174         void getDbName(DbHandle db, std::string &name);
 175         void setDbName(DbHandle db, const std::string &name);
 176
 177         //
 178         // Internal database interface
 179         //
 180         DbHandle createDb(const DLDbIdentifier &dbId,
 181         const AccessCredentials *cred, const AclEntryInput *owner,
 182         const DBParameters &params);
 183     DbHandle cloneDb(const DLDbIdentifier &newDbId, DbHandle srcDb);
 184
 185         DbHandle cloneDbForSync(const CssmData &secretsBlob, DbHandle srcDb,
 186                                                         const CssmData &agentData);
 187         DbHandle recodeDbForSync(DbHandle dbToClone, DbHandle srcDb);
 188     DbHandle recodeDbToVersion(uint32 newVersion, DbHandle srcDb);
 189     void recodeFinished(DbHandle db);
 190         DbHandle authenticateDbsForSync(const CssmData &dbHandleArray, const CssmData &agentData);
 191     void commitDbForSync(DbHandle srcDb, DbHandle cloneDb, CssmData &blob, Allocator &alloc);
 192         DbHandle decodeDb(const DLDbIdentifier &dbId,
 193         const AccessCredentials *cred, const CssmData &blob);
 194         void encodeDb(DbHandle db, CssmData &blob, Allocator &alloc);
 195     void encodeDb(DbHandle db, CssmData &blob) { return encodeDb(db, blob, returnAllocator); }
 196         void setDbParameters(DbHandle db, const DBParameters &params);
 197         void getDbParameters(DbHandle db, DBParameters &params);
 198     void changePassphrase(DbHandle db, const AccessCredentials *cred);
 199     void lock(DbHandle db);
 200     void lockAll(bool forSleep);
 201     void unlock(DbHandle db);
 202     void unlock(DbHandle db, const CssmData &passPhrase);
 203     void stashDb(DbHandle db);
 204     void stashDbCheck(DbHandle db);
 205     bool isLocked(DbHandle db);
 206     void verifyKeyStorePassphrase(uint32_t retries);
 207     void resetKeyStorePassphrase(const CssmData &passphrase);
 208     void changeKeyStorePassphrase();
 209
 210 public:
 211         //
 212         // Key objects
 213         //
 214         void encodeKey(KeyHandle key, CssmData &blob, KeyUID *uid, Allocator &alloc);
 215         void encodeKey(KeyHandle key, CssmData &blob, KeyUID *uid = NULL)
 216     { return encodeKey(key, blob, uid, returnAllocator); }
 217         KeyHandle decodeKey(DbHandle db, const CssmData &blob, CssmKey::Header &header);
 218         void recodeKey(DbHandle oldDb, KeyHandle key, DbHandle newDb, CssmData &blob);
 219         void releaseKey(KeyHandle key);
 220
 221         CssmKeySize queryKeySizeInBits(KeyHandle key);
 222     uint32 getOutputSize(const Security::Context &context, KeyHandle key,
 223         uint32 inputSize, bool encrypt = true);
 224
 225         void getKeyDigest(KeyHandle key, CssmData &digest, Allocator &alloc);
 226         void getKeyDigest(KeyHandle key, CssmData &digest)
 227         { return getKeyDigest(key, digest, returnAllocator); }
 228
 229
 230     // key wrapping and unwrapping
 231         void wrapKey(const Security::Context &context, KeyHandle key, KeyHandle keyToBeWrapped,
 232                 const AccessCredentials *cred,
 233                 const CssmData *descriptiveData, CssmWrappedKey &wrappedKey, Allocator &alloc);
 234         void wrapKey(const Security::Context &context, KeyHandle key, KeyHandle keyToBeWrapped,
 235                 const AccessCredentials *cred,
 236                 const CssmData *descriptiveData, CssmWrappedKey &wrappedKey)
 237     { return wrapKey(context, key, keyToBeWrapped, cred,
 238         descriptiveData, wrappedKey, returnAllocator); }
 239
 240         void unwrapKey(DbHandle db, const Security::Context &context, KeyHandle key, KeyHandle publicKey,
 241                 const CssmWrappedKey &wrappedKey, uint32 keyUsage, uint32 keyAttr,
 242                 const AccessCredentials *cred, const AclEntryInput *owner,
 243                 CssmData &data, KeyHandle &newKey, CssmKey::Header &newKeyHeader, Allocator &alloc);
 244         void unwrapKey(DbHandle db, const Security::Context &context, KeyHandle key, KeyHandle publicKey,
 245                 const CssmWrappedKey &wrappedKey, uint32 keyUsage, uint32 keyAttr,
 246                 const AccessCredentials *cred, const AclEntryInput *owner, CssmData &data,
 247         KeyHandle &newKey, CssmKey::Header &newKeyHeader)
 248     { return unwrapKey(db, context, key, publicKey, wrappedKey, keyUsage, keyAttr,
 249       cred, owner, data, newKey, newKeyHeader, returnAllocator); }
 250
 251     // key generation and derivation
 252         void generateKey(DbHandle db, const Security::Context &context, uint32 keyUsage, uint32 keyAttr,
 253                 const AccessCredentials *cred, const AclEntryInput *owner,
 254         KeyHandle &newKey, CssmKey::Header &newHeader);
 255         void generateKey(DbHandle db, const Security::Context &context,
 256                 uint32 pubKeyUsage, uint32 pubKeyAttr,
 257                 uint32 privKeyUsage, uint32 privKeyAttr,
 258                 const AccessCredentials *cred, const AclEntryInput *owner,
 259                 KeyHandle &pubKey, CssmKey::Header &pubHeader,
 260         KeyHandle &privKey, CssmKey::Header &privHeader);
 261         void deriveKey(DbHandle db, const Security::Context &context, KeyHandle baseKey,
 262         uint32 keyUsage, uint32 keyAttr, CssmData &param,
 263                 const AccessCredentials *cred, const AclEntryInput *owner,
 264         KeyHandle &newKey, CssmKey::Header &newHeader, Allocator &alloc);
 265         void deriveKey(DbHandle db, const Security::Context &context, KeyHandle baseKey,
 266         uint32 keyUsage, uint32 keyAttr, CssmData &param,
 267                 const AccessCredentials *cred, const AclEntryInput *owner,
 268         KeyHandle &newKey, CssmKey::Header &newHeader)
 269     { return deriveKey(db, context, baseKey, keyUsage, keyAttr, param, cred, owner, newKey, newHeader, returnAllocator); }
 270         //void generateAlgorithmParameters();   // not implemented
 271
 272         void generateRandom(const Security::Context &context, CssmData &data, Allocator &alloc);
 273         void generateRandom(const Security::Context &context, CssmData &data)
 274         { return generateRandom(context, data, returnAllocator); }
 275
 276     // encrypt/decrypt
 277         void encrypt(const Security::Context &context, KeyHandle key,
 278         const CssmData &in, CssmData &out, Allocator &alloc);
 279         void encrypt(const Security::Context &context, KeyHandle key, const CssmData &in, CssmData &out)
 280     { return encrypt(context, key, in, out, returnAllocator); }
 281         void decrypt(const Security::Context &context, KeyHandle key,
 282         const CssmData &in, CssmData &out, Allocator &alloc);
 283         void decrypt(const Security::Context &context, KeyHandle key, const CssmData &in, CssmData &out)
 284     { return decrypt(context, key, in, out, returnAllocator); }
 285
 286     // signatures
 287         void generateSignature(const Security::Context &context, KeyHandle key,
 288         const CssmData &data, CssmData &signature, Allocator &alloc,
 289         CSSM_ALGORITHMS signOnlyAlgorithm = CSSM_ALGID_NONE);
 290         void generateSignature(const Security::Context &context, KeyHandle key,
 291                 const CssmData &data, CssmData &signature, CSSM_ALGORITHMS signOnlyAlgorithm = CSSM_ALGID_NONE)
 292     { return generateSignature(context, key, data, signature, returnAllocator, signOnlyAlgorithm); }
 293         void verifySignature(const Security::Context &context, KeyHandle key,
 294                 const CssmData &data, const CssmData &signature,
 295         CSSM_ALGORITHMS verifyOnlyAlgorithm = CSSM_ALGID_NONE);
 296
 297     // MACs
 298         void generateMac(const Security::Context &context, KeyHandle key,
 299                 const CssmData &data, CssmData &mac, Allocator &alloc);
 300         void generateMac(const Security::Context &context, KeyHandle key,
 301                 const CssmData &data, CssmData &mac)
 302     { return generateMac(context, key, data, mac, returnAllocator); }
 303         void verifyMac(const Security::Context &context, KeyHandle key,
 304                 const CssmData &data, const CssmData &mac);
 305
 306     // key ACL management
 307         void getKeyAcl(KeyHandle key, const char *tag,
 308         uint32 &count, AclEntryInfo * &info, Allocator &alloc);
 309         void getKeyAcl(KeyHandle key, const char *tag,
 310         uint32 &count, AclEntryInfo * &info)
 311     { return getKeyAcl(key, tag, count, info, returnAllocator); }
 312         void changeKeyAcl(KeyHandle key, const AccessCredentials &cred, const AclEdit &edit);
 313         void getKeyOwner(KeyHandle key, AclOwnerPrototype &owner, Allocator &alloc);
 314         void getKeyOwner(KeyHandle key, AclOwnerPrototype &owner)
 315     { return getKeyOwner(key, owner, returnAllocator); }
 316         void changeKeyOwner(KeyHandle key, const AccessCredentials &cred,
 317                 const AclOwnerPrototype &edit);
 318
 319     // database ACL management
 320         void getDbAcl(DbHandle db, const char *tag,
 321         uint32 &count, AclEntryInfo * &info, Allocator &alloc);
 322         void getDbAcl(DbHandle db, const char *tag,
 323         uint32 &count, AclEntryInfo * &info)
 324     { return getDbAcl(db, tag, count, info, returnAllocator); }
 325         void changeDbAcl(DbHandle db, const AccessCredentials &cred, const AclEdit &edit);
 326         void getDbOwner(DbHandle db, AclOwnerPrototype &owner, Allocator &alloc);
 327         void getDbOwner(DbHandle db, AclOwnerPrototype &owner)
 328     { return getDbOwner(db, owner, returnAllocator); }
 329     void changeDbOwner(DbHandle db, const AccessCredentials &cred,
 330                 const AclOwnerPrototype &edit);
 331
 332         // database key manipulations
 333         void extractMasterKey(DbHandle db, const Context &context, DbHandle sourceDb,
 334         uint32 keyUsage, uint32 keyAttr,
 335                 const AccessCredentials *cred, const AclEntryInput *owner,
 336         KeyHandle &newKey, CssmKey::Header &newHeader, Allocator &alloc);
 337         void extractMasterKey(DbHandle db, const Context &context, DbHandle sourceDb,
 338         uint32 keyUsage, uint32 keyAttr,
 339                 const AccessCredentials *cred, const AclEntryInput *owner,
 340         KeyHandle &newKey, CssmKey::Header &newHeader)
 341         { return extractMasterKey(db, context, sourceDb, keyUsage, keyAttr, cred, owner,
 342                 newKey, newHeader, returnAllocator); }
 343
 344 public:
 345     // Testing support calls
 346     void getUserPromptAttempts(uint32_t& attempts);
 347
 348 public:
 349     // Notification core support
 350     void postNotification(NotificationDomain domain, NotificationEvent event, const CssmData &data);
 351
 352         // low-level callback (C form)
 353     typedef OSStatus ConsumeNotification(NotificationDomain domain, NotificationEvent event,
 354         const void *data, size_t dataLength, void *context);
 355
 356 public:
 357         // securityd helper support
 358         void childCheckIn(Port serverPort, Port taskPort);
 359
 360 public:
 361         // temporary hack to deal with "edit acl" pseudo-error returns
 362         typedef void DidChangeKeyAclCallback(void *context, ClientSession &clientSession,
 363                 KeyHandle key, CSSM_ACL_AUTHORIZATION_TAG tag);
 364         void registerForAclEdits(DidChangeKeyAclCallback *callback, void *context);
 365
 366 public:
 367         // Code Signing hosting interface
 368         void registerHosting(mach_port_t hostingPort, SecCSFlags flags);
 369         mach_port_t hostingPort(pid_t pid);
 370
 371         SecGuestRef createGuest(SecGuestRef host,
 372                 uint32_t status, const char *path, const CssmData &cdhash, const CssmData &attributes, SecCSFlags flags);
 373         void setGuestStatus(SecGuestRef guest, uint32 status, const CssmData &attributes);
 374         void removeGuest(SecGuestRef host, SecGuestRef guest);
 375
 376         void selectGuest(SecGuestRef guest);
 377         SecGuestRef selectedGuest() const;
 378
 379 private:
 380         static Port findSecurityd();
 381         void getAcl(AclKind kind, GenericHandle key, const char *tag,
 382                 uint32 &count, AclEntryInfo * &info, Allocator &alloc);
 383         void changeAcl(AclKind kind, GenericHandle key,
 384                 const AccessCredentials &cred, const AclEdit &edit);
 385         void getOwner(AclKind kind, GenericHandle key,
 386                 AclOwnerPrototype &owner, Allocator &alloc);
 387         void changeOwner(AclKind kind, GenericHandle key,
 388                 const AccessCredentials &cred, const AclOwnerPrototype &edit);
 389
 390         static OSStatus consumerDispatch(NotificationDomain domain, NotificationEvent event,
 391                 const void *data, size_t dataLength, void *context);
 392
 393         void notifyAclChange(KeyHandle key, CSSM_ACL_AUTHORIZATION_TAG tag);
 394
 395         void returnAttrsAndData(CssmDbRecordAttributeData *inOutAttributes,
 396                 CssmDbRecordAttributeData *attrs, CssmDbRecordAttributeData *attrsBase, mach_msg_type_number_t attrsLength,
 397                 CssmData *inOutData, void *dataPtr, mach_msg_type_number_t dataLength);
 398 private:
 399         DidChangeKeyAclCallback *mCallback;
 400         void *mCallbackContext;
 401
 402         static UnixPlusPlus::StaticForkMonitor mHasForked;      // global fork indicator
 403
 404         struct Thread {
 405                 Thread() : registered(false), notifySeq(0),
 406                         currentGuest(kSecNoGuest), lastGuest(kSecNoGuest) { }
 407                 operator bool() const { return registered; }
 408
 409                 ReceivePort replyPort;  // dedicated reply port (send right held by SecurityServer)
 410         bool registered;                // has been registered with SecurityServer
 411                 uint32 notifySeq; // notification sequence number
 412
 413                 SecGuestRef currentGuest;       // last set guest path
 414                 SecGuestRef lastGuest;          // last transmitted guest path
 415         };
 416
 417         struct Global {
 418         Global();
 419                 Port serverPort;
 420                 RefPointer<OSXCode> myself;
 421                 ThreadNexus<Thread> thread;
 422         };
 423
 424         static ModuleNexus<Global> mGlobal;
 425         static const char *mContactName;
 426         static SecGuestRef mDedicatedGuest;
 427 };
 428
 429
 430 } // end namespace SecurityServer
 431 } // end namespace Security
 432
 433 #endif //__cplusplus
 434
 435
 436 #endif //_H_SSCLIENT