LCOV - code coverage report
Current view: top level - engine - tb_digest.c (source / functions) Hit Total Coverage
Test: lcov_coverage_final.info Lines: 28 33 84.8 %
Date: 2014-08-02 Functions: 8 9 88.9 %
Branches: 9 14 64.3 %

           Branch data     Line data    Source code
       1                 :            : /* ====================================================================
       2                 :            :  * Copyright (c) 2000 The OpenSSL Project.  All rights reserved.
       3                 :            :  *
       4                 :            :  * Redistribution and use in source and binary forms, with or without
       5                 :            :  * modification, are permitted provided that the following conditions
       6                 :            :  * are met:
       7                 :            :  *
       8                 :            :  * 1. Redistributions of source code must retain the above copyright
       9                 :            :  *    notice, this list of conditions and the following disclaimer. 
      10                 :            :  *
      11                 :            :  * 2. Redistributions in binary form must reproduce the above copyright
      12                 :            :  *    notice, this list of conditions and the following disclaimer in
      13                 :            :  *    the documentation and/or other materials provided with the
      14                 :            :  *    distribution.
      15                 :            :  *
      16                 :            :  * 3. All advertising materials mentioning features or use of this
      17                 :            :  *    software must display the following acknowledgment:
      18                 :            :  *    "This product includes software developed by the OpenSSL Project
      19                 :            :  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
      20                 :            :  *
      21                 :            :  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
      22                 :            :  *    endorse or promote products derived from this software without
      23                 :            :  *    prior written permission. For written permission, please contact
      24                 :            :  *    licensing@OpenSSL.org.
      25                 :            :  *
      26                 :            :  * 5. Products derived from this software may not be called "OpenSSL"
      27                 :            :  *    nor may "OpenSSL" appear in their names without prior written
      28                 :            :  *    permission of the OpenSSL Project.
      29                 :            :  *
      30                 :            :  * 6. Redistributions of any form whatsoever must retain the following
      31                 :            :  *    acknowledgment:
      32                 :            :  *    "This product includes software developed by the OpenSSL Project
      33                 :            :  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
      34                 :            :  *
      35                 :            :  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
      36                 :            :  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
      37                 :            :  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
      38                 :            :  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
      39                 :            :  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      40                 :            :  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
      41                 :            :  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
      42                 :            :  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
      43                 :            :  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
      44                 :            :  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
      45                 :            :  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
      46                 :            :  * OF THE POSSIBILITY OF SUCH DAMAGE.
      47                 :            :  * ====================================================================
      48                 :            :  *
      49                 :            :  * This product includes cryptographic software written by Eric Young
      50                 :            :  * (eay@cryptsoft.com).  This product includes software written by Tim
      51                 :            :  * Hudson (tjh@cryptsoft.com).
      52                 :            :  *
      53                 :            :  */
      54                 :            : 
      55                 :            : #include "eng_int.h"
      56                 :            : 
      57                 :            : /* If this symbol is defined then ENGINE_get_digest_engine(), the function that
      58                 :            :  * is used by EVP to hook in digest code and cache defaults (etc), will display
      59                 :            :  * brief debugging summaries to stderr with the 'nid'. */
      60                 :            : /* #define ENGINE_DIGEST_DEBUG */
      61                 :            : 
      62                 :            : static ENGINE_TABLE *digest_table = NULL;
      63                 :            : 
      64                 :          0 : void ENGINE_unregister_digests(ENGINE *e)
      65                 :            :         {
      66                 :          0 :         engine_table_unregister(&digest_table, e);
      67                 :          0 :         }
      68                 :            : 
      69                 :        727 : static void engine_unregister_all_digests(void)
      70                 :            :         {
      71                 :        727 :         engine_table_cleanup(&digest_table);
      72                 :        727 :         }
      73                 :            : 
      74                 :       8760 : int ENGINE_register_digests(ENGINE *e)
      75                 :            :         {
      76         [ +  + ]:       8760 :         if(e->digests)
      77                 :            :                 {
      78                 :            :                 const int *nids;
      79                 :       1458 :                 int num_nids = e->digests(e, NULL, &nids, 0);
      80         [ +  - ]:       1458 :                 if(num_nids > 0)
      81                 :       1458 :                         return engine_table_register(&digest_table,
      82                 :            :                                         engine_unregister_all_digests, e, nids,
      83                 :            :                                         num_nids, 0);
      84                 :            :                 }
      85                 :            :         return 1;
      86                 :            :         }
      87                 :            : 
      88                 :          2 : void ENGINE_register_all_digests()
      89                 :            :         {
      90                 :            :         ENGINE *e;
      91                 :            : 
      92         [ +  + ]:         26 :         for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e))
      93                 :         24 :                 ENGINE_register_digests(e);
      94                 :          2 :         }
      95                 :            : 
      96                 :          1 : int ENGINE_set_default_digests(ENGINE *e)
      97                 :            :         {
      98         [ +  - ]:          1 :         if(e->digests)
      99                 :            :                 {
     100                 :            :                 const int *nids;
     101                 :          1 :                 int num_nids = e->digests(e, NULL, &nids, 0);
     102         [ +  - ]:          1 :                 if(num_nids > 0)
     103                 :          1 :                         return engine_table_register(&digest_table,
     104                 :            :                                         engine_unregister_all_digests, e, nids,
     105                 :            :                                         num_nids, 1);
     106                 :            :                 }
     107                 :            :         return 1;
     108                 :            :         }
     109                 :            : 
     110                 :            : /* Exposed API function to get a functional reference from the implementation
     111                 :            :  * table (ie. try to get a functional reference from the tabled structural
     112                 :            :  * references) for a given digest 'nid' */
     113                 :    1183151 : ENGINE *ENGINE_get_digest_engine(int nid)
     114                 :            :         {
     115                 :    1183151 :         return engine_table_select(&digest_table, nid);
     116                 :            :         }
     117                 :            : 
     118                 :            : /* Obtains a digest implementation from an ENGINE functional reference */
     119                 :         30 : const EVP_MD *ENGINE_get_digest(ENGINE *e, int nid)
     120                 :            :         {
     121                 :            :         const EVP_MD *ret;
     122                 :         30 :         ENGINE_DIGESTS_PTR fn = ENGINE_get_digests(e);
     123 [ +  - ][ -  + ]:         30 :         if(!fn || !fn(e, &ret, NULL, nid))
     124                 :            :                 {
     125                 :          0 :                 ENGINEerr(ENGINE_F_ENGINE_GET_DIGEST,
     126                 :            :                                 ENGINE_R_UNIMPLEMENTED_DIGEST);
     127                 :          0 :                 return NULL;
     128                 :            :                 }
     129                 :         30 :         return ret;
     130                 :            :         }
     131                 :            : 
     132                 :            : /* Gets the digest callback from an ENGINE structure */
     133                 :         30 : ENGINE_DIGESTS_PTR ENGINE_get_digests(const ENGINE *e)
     134                 :            :         {
     135                 :         30 :         return e->digests;
     136                 :            :         }
     137                 :            : 
     138                 :            : /* Sets the digest callback in an ENGINE structure */
     139                 :        728 : int ENGINE_set_digests(ENGINE *e, ENGINE_DIGESTS_PTR f)
     140                 :            :         {
     141                 :        728 :         e->digests = f;
     142                 :        728 :         return 1;
     143                 :            :         }

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