LCOV - code coverage report
Current view: top level - src - version.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 43 0.0 %
Date: 2017-03-02 16:39:06 Functions: 0 4 0.0 %

          Line data    Source code
       1             : /* version.c - Version checking
       2             :  * Copyright (C) 2001, 2002, 2012 g10 Code GmbH
       3             :  *
       4             :  * This file is part of KSBA.
       5             :  *
       6             :  * KSBA is free software; you can redistribute it and/or modify
       7             :  * it under the terms of either
       8             :  *
       9             :  *   - the GNU Lesser General Public License as published by the Free
      10             :  *     Software Foundation; either version 3 of the License, or (at
      11             :  *     your option) any later version.
      12             :  *
      13             :  * or
      14             :  *
      15             :  *   - the GNU General Public License as published by the Free
      16             :  *     Software Foundation; either version 2 of the License, or (at
      17             :  *     your option) any later version.
      18             :  *
      19             :  * or both in parallel, as here.
      20             :  *
      21             :  * KSBA is distributed in the hope that it will be useful, but WITHOUT
      22             :  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
      23             :  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
      24             :  * License for more details.
      25             :  *
      26             :  * You should have received a copies of the GNU General Public License
      27             :  * and the GNU Lesser General Public License along with this program;
      28             :  * if not, see <http://www.gnu.org/licenses/>.
      29             :  */
      30             : 
      31             : #include <config.h>
      32             : #include <stdio.h>
      33             : #include <stdlib.h>
      34             : #include <string.h>
      35             : 
      36             : #include "util.h"
      37             : 
      38             : static const char*
      39           0 : parse_version_number (const char *s, int *number)
      40             : {
      41           0 :   int val = 0;
      42             : 
      43           0 :   if (*s == '0' && digitp (s+1))
      44           0 :     return NULL;  /* Leading zeros are not allowed.  */
      45           0 :   for (; digitp (s); s++)
      46             :     {
      47           0 :       val *= 10;
      48           0 :       val += *s - '0';
      49             :     }
      50           0 :   *number = val;
      51           0 :   return val < 0 ? NULL : s;
      52             : }
      53             : 
      54             : static const char *
      55           0 : parse_version_string (const char *s, int *major, int *minor, int *micro)
      56             : {
      57           0 :   s = parse_version_number (s, major);
      58           0 :   if (!s || *s != '.')
      59           0 :     return NULL;
      60           0 :   s++;
      61           0 :   s = parse_version_number (s, minor);
      62           0 :   if (!s || *s != '.')
      63           0 :     return NULL;
      64           0 :   s++;
      65           0 :   s = parse_version_number (s, micro);
      66           0 :   if (!s)
      67           0 :     return NULL;
      68           0 :   return s;  /* Patchlevel.  */
      69             : }
      70             : 
      71             : static const char *
      72           0 : compare_versions (const char *my_version, const char *req_version)
      73             : {
      74             :   int my_major, my_minor, my_micro;
      75             :   int rq_major, rq_minor, rq_micro;
      76             :   const char *my_plvl, *rq_plvl;
      77             : 
      78           0 :   if (!req_version)
      79           0 :     return my_version;
      80           0 :   if (!my_version)
      81           0 :     return NULL;
      82             : 
      83           0 :   my_plvl = parse_version_string (my_version, &my_major, &my_minor, &my_micro);
      84           0 :   if (!my_plvl)
      85           0 :     return NULL;        /* Very strange: our own version is bogus.  */
      86           0 :   rq_plvl = parse_version_string(req_version,
      87             :                                  &rq_major, &rq_minor, &rq_micro);
      88           0 :   if (!rq_plvl)
      89           0 :     return NULL;        /* Requested version string is invalid.  */
      90             : 
      91           0 :   if (my_major > rq_major
      92           0 :         || (my_major == rq_major && my_minor > rq_minor)
      93           0 :       || (my_major == rq_major && my_minor == rq_minor
      94           0 :           && my_micro > rq_micro)
      95           0 :       || (my_major == rq_major && my_minor == rq_minor
      96           0 :           && my_micro == rq_micro))
      97             :     {
      98           0 :       return my_version;
      99             :     }
     100           0 :   return NULL;
     101             : }
     102             : 
     103             : /**
     104             :  * ksba_check_version:
     105             :  * @req_version: A string with a version
     106             :  *
     107             :  * Check that the the version of the library is at minimum the requested one
     108             :  * and return the version string; return NULL if the condition is not
     109             :  * met.  If a NULL is passed to this function, no check is done and
     110             :  * the version string is simply returned.  It is a pretty good idea to
     111             :  * run this function as soon as possible, because it also intializes
     112             :  * some subsystems.  In a multithreaded environment if should be called
     113             :  * before the first thread is created.
     114             :  *
     115             :  * Return value: The version string or NULL
     116             :  **/
     117             : const char *
     118           0 : ksba_check_version (const char *req_version)
     119             : {
     120             :   /* fixme: if we need global initializations.
     121             :      Note that these the malloc hook might not have been run yet */
     122           0 :   return compare_versions (VERSION, req_version);
     123             : }

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