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

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

security/nss/lib/ckfw/builtins/bfind.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/. */
 #ifndef BUILTINS_H
 #include "builtins.h"
 #endif /* BUILTINS_H */
 /*
  * builtins/find.c
  *
  * This file implements the NSSCKMDFindObjects object for the
  * "builtin objects" cryptoki module.
  */
 struct builtinsFOStr {
   NSSArena *arena;
   CK_ULONG n;
   CK_ULONG i;
   builtinsInternalObject **objs;
 };
 static void
 builtins_mdFindObjects_Final
 (
   NSSCKMDFindObjects *mdFindObjects,
   NSSCKFWFindObjects *fwFindObjects,
   NSSCKMDSession *mdSession,
   NSSCKFWSession *fwSession,
   NSSCKMDToken *mdToken,
   NSSCKFWToken *fwToken,
   NSSCKMDInstance *mdInstance,
   NSSCKFWInstance *fwInstance
 )
 {
   struct builtinsFOStr *fo = (struct builtinsFOStr *)mdFindObjects->etc;
   NSSArena *arena = fo->arena;
   nss_ZFreeIf(fo->objs);
   nss_ZFreeIf(fo);
   nss_ZFreeIf(mdFindObjects);
   if ((NSSArena *)NULL != arena) {
     NSSArena_Destroy(arena);
   }
   return;
 }
 static NSSCKMDObject *
 builtins_mdFindObjects_Next
 (
   NSSCKMDFindObjects *mdFindObjects,
   NSSCKFWFindObjects *fwFindObjects,
   NSSCKMDSession *mdSession,
   NSSCKFWSession *fwSession,
   NSSCKMDToken *mdToken,
   NSSCKFWToken *fwToken,
   NSSCKMDInstance *mdInstance,
   NSSCKFWInstance *fwInstance,
   NSSArena *arena,
   CK_RV *pError
 )
 {
   struct builtinsFOStr *fo = (struct builtinsFOStr *)mdFindObjects->etc;
   builtinsInternalObject *io;
   if( fo->i == fo->n ) {
     *pError = CKR_OK;
     return (NSSCKMDObject *)NULL;
   }
   io = fo->objs[ fo->i ];
   fo->i++;
   return nss_builtins_CreateMDObject(arena, io, pError);
 }
 static int
 builtins_derUnwrapInt(unsigned char *src, int size, unsigned char **dest) {
     unsigned char *start = src;
     int len = 0;
     if (*src ++ != 2) {
 	return 0;
     }
     len = *src++;
     if (len & 0x80) {
 	int count = len & 0x7f;
 	len =0;
 	if (count+2 > size) {
 	    return 0;
 	}
 	while (count-- > 0) {
 	    len = (len << 8) | *src++;
 	}
     }
     if (len + (src-start) != size) {
 	return 0;
     }
     *dest = src;
     return len;
 }
 static CK_BBOOL
 builtins_attrmatch
 (
   CK_ATTRIBUTE_PTR a,
   const NSSItem *b
 )
 {
   PRBool prb;
   if( a->ulValueLen != b->size ) {
     /* match a decoded serial number */
     if ((a->type == CKA_SERIAL_NUMBER) && (a->ulValueLen < b->size)) {
 	int len;
 	unsigned char *data = NULL;
 	len = builtins_derUnwrapInt(b->data,b->size,&data);
 	if (data &&
 	    (len == a->ulValueLen) &&
 	    nsslibc_memequal(a->pValue, data, len, (PRStatus *)NULL)) {
 	    return CK_TRUE;
 	}
     }
     return CK_FALSE;
   }
   prb = nsslibc_memequal(a->pValue, b->data, b->size, (PRStatus *)NULL);
   if( PR_TRUE == prb ) {
     return CK_TRUE;
   } else {
     return CK_FALSE;
   }
 }
 static CK_BBOOL
 builtins_match
 (
   CK_ATTRIBUTE_PTR pTemplate,
   CK_ULONG ulAttributeCount,
   builtinsInternalObject *o
 )
 {
   CK_ULONG i;
   for( i = 0; i < ulAttributeCount; i++ ) {
     CK_ULONG j;
     for( j = 0; j < o->n; j++ ) {
       if( o->types[j] == pTemplate[i].type ) {
         if( CK_FALSE == builtins_attrmatch(&pTemplate[i], &o->items[j]) ) {
           return CK_FALSE;
         } else {
           break;
         }
       }
     }
     if( j == o->n ) {
       /* Loop ran to the end: no matching attribute */
       return CK_FALSE;
     }
   }
   /* Every attribute passed */
   return CK_TRUE;
 }
 NSS_IMPLEMENT NSSCKMDFindObjects *
 nss_builtins_FindObjectsInit
 (
   NSSCKFWSession *fwSession,
   CK_ATTRIBUTE_PTR pTemplate,
   CK_ULONG ulAttributeCount,
   CK_RV *pError
 )
 {
   /* This could be made more efficient.  I'm rather rushed. */
   NSSArena *arena;
   NSSCKMDFindObjects *rv = (NSSCKMDFindObjects *)NULL;
   struct builtinsFOStr *fo = (struct builtinsFOStr *)NULL;
   builtinsInternalObject **temp = (builtinsInternalObject **)NULL;
   PRUint32 i;
   arena = NSSArena_Create();
   if( (NSSArena *)NULL == arena ) {
     goto loser;
   }
   rv = nss_ZNEW(arena, NSSCKMDFindObjects);
   if( (NSSCKMDFindObjects *)NULL == rv ) {
     *pError = CKR_HOST_MEMORY;
     goto loser;
   }
   fo = nss_ZNEW(arena, struct builtinsFOStr);
   if( (struct builtinsFOStr *)NULL == fo ) {
     *pError = CKR_HOST_MEMORY;
     goto loser;
   }
   fo->arena = arena;
   /* fo->n and fo->i are already zero */
   rv->etc = (void *)fo;
   rv->Final = builtins_mdFindObjects_Final;
   rv->Next = builtins_mdFindObjects_Next;
   rv->null = (void *)NULL;
   temp = nss_ZNEWARRAY((NSSArena *)NULL, builtinsInternalObject *,
                        nss_builtins_nObjects);
   if( (builtinsInternalObject **)NULL == temp ) {
     *pError = CKR_HOST_MEMORY;
     goto loser;
   }
   for( i = 0; i < nss_builtins_nObjects; i++ ) {
     builtinsInternalObject *o = (builtinsInternalObject *)&nss_builtins_data[i];
     if( CK_TRUE == builtins_match(pTemplate, ulAttributeCount, o) ) {
       temp[ fo->n ] = o;
       fo->n++;
     }
   }
   fo->objs = nss_ZNEWARRAY(arena, builtinsInternalObject *, fo->n);
   if( (builtinsInternalObject **)NULL == fo->objs ) {
     *pError = CKR_HOST_MEMORY;
     goto loser;
   }
   (void)nsslibc_memcpy(fo->objs, temp, sizeof(builtinsInternalObject *) * fo->n);
   nss_ZFreeIf(temp);
   temp = (builtinsInternalObject **)NULL;
   return rv;
  loser:
   nss_ZFreeIf(temp);
   nss_ZFreeIf(fo);
   nss_ZFreeIf(rv);
   if ((NSSArena *)NULL != arena) {
      NSSArena_Destroy(arena);
   }
   return (NSSCKMDFindObjects *)NULL;
 }

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

security/nss/lib/ckfw/builtins/bfind.c