The Tor Browser: security/nss/lib/ckfw/find.c@6474c204b198 (annotated)

security/nss/lib/ckfw/find.c@6474c204b198 (annotated)

security/nss/lib/ckfw/find.c

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 /*
  * find.c
  *
  * This file implements the nssCKFWFindObjects type and methods.
  */
 #ifndef CK_H
 #include "ck.h"
 #endif /* CK_H */
 /*
  * NSSCKFWFindObjects
  *
  *  -- create/destroy --
  *  nssCKFWFindObjects_Create
  *  nssCKFWFindObjects_Destroy
  *
  *  -- public accessors --
  *  NSSCKFWFindObjects_GetMDFindObjects
  *
  *  -- implement public accessors --
  *  nssCKFWFindObjects_GetMDFindObjects
  *
  *  -- private accessors --
  *
  *  -- module fronts --
  *  nssCKFWFindObjects_Next
  */
 struct NSSCKFWFindObjectsStr {
   NSSCKFWMutex *mutex; /* merely to serialise the MDObject calls */
   NSSCKMDFindObjects *mdfo1;
   NSSCKMDFindObjects *mdfo2;
   NSSCKFWSession *fwSession;
   NSSCKMDSession *mdSession;
   NSSCKFWToken *fwToken;
   NSSCKMDToken *mdToken;
   NSSCKFWInstance *fwInstance;
   NSSCKMDInstance *mdInstance;
   NSSCKMDFindObjects *mdFindObjects; /* varies */
 };
 #ifdef DEBUG
 /*
  * But first, the pointer-tracking stuff.
  *
  * NOTE: the pointer-tracking support in NSS/base currently relies
  * upon NSPR's CallOnce support.  That, however, relies upon NSPR's
  * locking, which is tied into the runtime.  We need a pointer-tracker
  * implementation that uses the locks supplied through C_Initialize.
  * That support, however, can be filled in later.  So for now, I'll
  * just do these routines as no-ops.
  */
 static CK_RV
 findObjects_add_pointer
 (
   const NSSCKFWFindObjects *fwFindObjects
 )
 {
   return CKR_OK;
 }
 static CK_RV
 findObjects_remove_pointer
 (
   const NSSCKFWFindObjects *fwFindObjects
 )
 {
   return CKR_OK;
 }
 NSS_IMPLEMENT CK_RV
 nssCKFWFindObjects_verifyPointer
 (
   const NSSCKFWFindObjects *fwFindObjects
 )
 {
   return CKR_OK;
 }
 #endif /* DEBUG */
 /*
  * nssCKFWFindObjects_Create
  *
  */
 NSS_EXTERN NSSCKFWFindObjects *
 nssCKFWFindObjects_Create
 (
   NSSCKFWSession *fwSession,
   NSSCKFWToken *fwToken,
   NSSCKFWInstance *fwInstance,
   NSSCKMDFindObjects *mdFindObjects1,
   NSSCKMDFindObjects *mdFindObjects2,
   CK_RV *pError
 )
 {
   NSSCKFWFindObjects *fwFindObjects = NULL;
   NSSCKMDSession *mdSession;
   NSSCKMDToken *mdToken;
   NSSCKMDInstance *mdInstance;
   mdSession = nssCKFWSession_GetMDSession(fwSession);
   mdToken = nssCKFWToken_GetMDToken(fwToken);
   mdInstance = nssCKFWInstance_GetMDInstance(fwInstance);
   fwFindObjects = nss_ZNEW(NULL, NSSCKFWFindObjects);
   if (!fwFindObjects) {
     *pError = CKR_HOST_MEMORY;
     goto loser;
   }
   fwFindObjects->mdfo1 = mdFindObjects1;
   fwFindObjects->mdfo2 = mdFindObjects2;
   fwFindObjects->fwSession = fwSession;
   fwFindObjects->mdSession = mdSession;
   fwFindObjects->fwToken = fwToken;
   fwFindObjects->mdToken = mdToken;
   fwFindObjects->fwInstance = fwInstance;
   fwFindObjects->mdInstance = mdInstance;
   fwFindObjects->mutex = nssCKFWInstance_CreateMutex(fwInstance, NULL, pError);
   if (!fwFindObjects->mutex) {
     goto loser;
   }
 #ifdef DEBUG
   *pError = findObjects_add_pointer(fwFindObjects);
   if( CKR_OK != *pError ) {
     goto loser;
   }
 #endif /* DEBUG */
   return fwFindObjects;
  loser:
   if( fwFindObjects ) {
     if( NULL != mdFindObjects1 ) {
       if( NULL != mdFindObjects1->Final ) {
         fwFindObjects->mdFindObjects = mdFindObjects1;
         mdFindObjects1->Final(mdFindObjects1, fwFindObjects, mdSession,
           fwSession, mdToken, fwToken, mdInstance, fwInstance);
       }
     }
     if( NULL != mdFindObjects2 ) {
       if( NULL != mdFindObjects2->Final ) {
         fwFindObjects->mdFindObjects = mdFindObjects2;
         mdFindObjects2->Final(mdFindObjects2, fwFindObjects, mdSession,
           fwSession, mdToken, fwToken, mdInstance, fwInstance);
       }
     }
     nss_ZFreeIf(fwFindObjects);
   }
   if( CKR_OK == *pError ) {
     *pError = CKR_GENERAL_ERROR;
   }
   return (NSSCKFWFindObjects *)NULL;
 }
 /*
  * nssCKFWFindObjects_Destroy
  *
  */
 NSS_EXTERN void
 nssCKFWFindObjects_Destroy
 (
   NSSCKFWFindObjects *fwFindObjects
 )
 {
 #ifdef NSSDEBUG
   if( CKR_OK != nssCKFWFindObjects_verifyPointer(fwFindObjects) ) {
     return;
   }
 #endif /* NSSDEBUG */
   (void)nssCKFWMutex_Destroy(fwFindObjects->mutex);
   if (fwFindObjects->mdfo1) {
     if (fwFindObjects->mdfo1->Final) {
       fwFindObjects->mdFindObjects = fwFindObjects->mdfo1;
       fwFindObjects->mdfo1->Final(fwFindObjects->mdfo1, fwFindObjects,
         fwFindObjects->mdSession, fwFindObjects->fwSession,
         fwFindObjects->mdToken, fwFindObjects->fwToken,
         fwFindObjects->mdInstance, fwFindObjects->fwInstance);
     }
   }
   if (fwFindObjects->mdfo2) {
     if (fwFindObjects->mdfo2->Final) {
       fwFindObjects->mdFindObjects = fwFindObjects->mdfo2;
       fwFindObjects->mdfo2->Final(fwFindObjects->mdfo2, fwFindObjects,
         fwFindObjects->mdSession, fwFindObjects->fwSession,
         fwFindObjects->mdToken, fwFindObjects->fwToken,
         fwFindObjects->mdInstance, fwFindObjects->fwInstance);
     }
   }
   nss_ZFreeIf(fwFindObjects);
 #ifdef DEBUG
   (void)findObjects_remove_pointer(fwFindObjects);
 #endif /* DEBUG */
   return;
 }
 /*
  * nssCKFWFindObjects_GetMDFindObjects
  *
  */
 NSS_EXTERN NSSCKMDFindObjects *
 nssCKFWFindObjects_GetMDFindObjects
 (
   NSSCKFWFindObjects *fwFindObjects
 )
 {
 #ifdef NSSDEBUG
   if( CKR_OK != nssCKFWFindObjects_verifyPointer(fwFindObjects) ) {
     return (NSSCKMDFindObjects *)NULL;
   }
 #endif /* NSSDEBUG */
   return fwFindObjects->mdFindObjects;
 }
 /*
  * nssCKFWFindObjects_Next
  *
  */
 NSS_EXTERN NSSCKFWObject *
 nssCKFWFindObjects_Next
 (
   NSSCKFWFindObjects *fwFindObjects,
   NSSArena *arenaOpt,
   CK_RV *pError
 )
 {
   NSSCKMDObject *mdObject;
   NSSCKFWObject *fwObject = (NSSCKFWObject *)NULL;
   NSSArena *objArena;
 #ifdef NSSDEBUG
   if (!pError) {
     return (NSSCKFWObject *)NULL;
   }
   *pError = nssCKFWFindObjects_verifyPointer(fwFindObjects);
   if( CKR_OK != *pError ) {
     return (NSSCKFWObject *)NULL;
   }
 #endif /* NSSDEBUG */
   *pError = nssCKFWMutex_Lock(fwFindObjects->mutex);
   if( CKR_OK != *pError ) {
     return (NSSCKFWObject *)NULL;
   }
   if (fwFindObjects->mdfo1) {
     if (fwFindObjects->mdfo1->Next) {
       fwFindObjects->mdFindObjects = fwFindObjects->mdfo1;
       mdObject = fwFindObjects->mdfo1->Next(fwFindObjects->mdfo1,
         fwFindObjects, fwFindObjects->mdSession, fwFindObjects->fwSession,
         fwFindObjects->mdToken, fwFindObjects->fwToken,
         fwFindObjects->mdInstance, fwFindObjects->fwInstance,
         arenaOpt, pError);
       if (!mdObject) {
         if( CKR_OK != *pError ) {
           goto done;
         }
         /* All done. */
         fwFindObjects->mdfo1->Final(fwFindObjects->mdfo1, fwFindObjects,
           fwFindObjects->mdSession, fwFindObjects->fwSession,
           fwFindObjects->mdToken, fwFindObjects->fwToken,
           fwFindObjects->mdInstance, fwFindObjects->fwInstance);
         fwFindObjects->mdfo1 = (NSSCKMDFindObjects *)NULL;
       } else {
         goto wrap;
       }
     }
   }
   if (fwFindObjects->mdfo2) {
     if (fwFindObjects->mdfo2->Next) {
       fwFindObjects->mdFindObjects = fwFindObjects->mdfo2;
       mdObject = fwFindObjects->mdfo2->Next(fwFindObjects->mdfo2,
         fwFindObjects, fwFindObjects->mdSession, fwFindObjects->fwSession,
         fwFindObjects->mdToken, fwFindObjects->fwToken,
         fwFindObjects->mdInstance, fwFindObjects->fwInstance,
         arenaOpt, pError);
       if (!mdObject) {
         if( CKR_OK != *pError ) {
           goto done;
         }
         /* All done. */
         fwFindObjects->mdfo2->Final(fwFindObjects->mdfo2, fwFindObjects,
           fwFindObjects->mdSession, fwFindObjects->fwSession,
           fwFindObjects->mdToken, fwFindObjects->fwToken,
           fwFindObjects->mdInstance, fwFindObjects->fwInstance);
         fwFindObjects->mdfo2 = (NSSCKMDFindObjects *)NULL;
       } else {
         goto wrap;
       }
     }
   }
   /* No more objects */
   *pError = CKR_OK;
   goto done;
  wrap:
   /*
    * This seems is less than ideal-- we should determine if it's a token
    * object or a session object, and use the appropriate arena.
    * But that duplicates logic in nssCKFWObject_IsTokenObject.
    * Also we should lookup the real session the object was created on
    * if the object was a session object... however this code is actually
    * correct because nssCKFWObject_Create will return a cached version of
    * the object from it's hash. This is necessary because 1) we don't want
    * to create an arena style leak (where our arena grows with every search),
    * and 2) we want the same object to always have the same ID. This means
    * the only case the nssCKFWObject_Create() will need the objArena and the
    * Session is in the case of token objects (session objects should already
    * exist in the cache from their initial creation). So this code is correct,
    * but it depends on nssCKFWObject_Create caching all objects.
    */
   objArena = nssCKFWToken_GetArena(fwFindObjects->fwToken, pError);
   if (!objArena) {
     if( CKR_OK == *pError ) {
       *pError = CKR_HOST_MEMORY;
     }
     goto done;
   }
   fwObject = nssCKFWObject_Create(objArena, mdObject,
                NULL, fwFindObjects->fwToken,
                fwFindObjects->fwInstance, pError);
   if (!fwObject) {
     if( CKR_OK == *pError ) {
       *pError = CKR_GENERAL_ERROR;
     }
   }
  done:
   (void)nssCKFWMutex_Unlock(fwFindObjects->mutex);
   return fwObject;
 }
 /*
  * NSSCKFWFindObjects_GetMDFindObjects
  *
  */
 NSS_EXTERN NSSCKMDFindObjects *
 NSSCKFWFindObjects_GetMDFindObjects
 (
   NSSCKFWFindObjects *fwFindObjects
 )
 {
 #ifdef DEBUG
   if( CKR_OK != nssCKFWFindObjects_verifyPointer(fwFindObjects) ) {
     return (NSSCKMDFindObjects *)NULL;
   }
 #endif /* DEBUG */
   return nssCKFWFindObjects_GetMDFindObjects(fwFindObjects);
 }

The Tor Browser / annotate

security/nss/lib/ckfw/find.c@6474c204b198 (annotated)

security/nss/lib/ckfw/find.c