package/ead/src/tinysrp/t_getconf.c

   1 /*
   2  * Copyright (c) 1997-1999  The Stanford SRP Authentication Project
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be
  14  * included in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
  17  * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
  18  * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
  19  *
  20  * IN NO EVENT SHALL STANFORD BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
  21  * INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER
  22  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR NOT ADVISED OF
  23  * THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF LIABILITY, ARISING OUT
  24  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  25  *
  26  * In addition, the following conditions apply:
  27  *
  28  * 1. Any software that incorporates the SRP authentication technology
  29  *    must display the following acknowlegment:
  30  *    "This product uses the 'Secure Remote Password' cryptographic
  31  *     authentication system developed by Tom Wu (tjw@CS.Stanford.EDU)."
  32  *
  33  * 2. Any software that incorporates all or part of the SRP distribution
  34  *    itself must also display the following acknowledgment:
  35  *    "This product includes software developed by Tom Wu and Eugene
  36  *     Jhong for the SRP Distribution (http://srp.stanford.edu/srp/)."
  37  *
  38  * 3. Redistributions in source or binary form must retain an intact copy
  39  *    of this copyright notice and list of conditions.
  40  */
  41
  42 #include <stdio.h>
  43
  44 #include "t_defines.h"
  45 #include "t_pwd.h"
  46 #include "t_read.h"
  47
  48 /* Master builtin parameter storage object.  The default that tphrase
  49 uses is the last one. */
  50
  51 static struct pre_struct {
  52   struct t_preconf preconf;
  53   int state;    /* 0 == uninitialized/first time */
  54   unsigned char modbuf[MAXPARAMLEN];
  55   unsigned char genbuf[MAXPARAMLEN];
  56 } pre_params[] = {
  57   { { "2iQzj1CagQc/5ctbuJYLWlhtAsPHc7xWVyCPAKFRLWKADpASkqe9djWPFWTNTdeJtL8nAhImCn3Sr/IAdQ1FrGw0WvQUstPx3FO9KNcXOwisOQ1VlL.gheAHYfbYyBaxXL.NcJx9TUwgWDT0hRzFzqSrdGGTN3FgSTA1v4QnHtEygNj3eZ.u0MThqWUaDiP87nqha7XnT66bkTCkQ8.7T8L4KZjIImrNrUftedTTBi.WCi.zlrBxDuOM0da0JbUkQlXqvp0yvJAPpC11nxmmZOAbQOywZGmu9nhZNuwTlxjfIro0FOdthaDTuZRL9VL7MRPUDo/DQEyW.d4H.UIlzp",
  58       "2",
  59       NULL }, 0 },
  60   { { "dUyyhxav9tgnyIg65wHxkzkb7VIPh4o0lkwfOKiPp4rVJrzLRYVBtb76gKlaO7ef5LYGEw3G.4E0jbMxcYBetDy2YdpiP/3GWJInoBbvYHIRO9uBuxgsFKTKWu7RnR7yTau/IrFTdQ4LY/q.AvoCzMxV0PKvD9Odso/LFIItn8PbTov3VMn/ZEH2SqhtpBUkWtmcIkEflhX/YY/fkBKfBbe27/zUaKUUZEUYZ2H2nlCL60.JIPeZJSzsu/xHDVcx",
  61       "2",
  62       NULL }, 0 },
  63   { { "3NUKQ2Re4P5BEK0TLg2dX3gETNNNECPoe92h4OVMaDn3Xo/0QdjgG/EvM.hiVV1BdIGklSI14HA38Mpe5k04juR5/EXMU0r1WtsLhNXwKBlf2zEfoOh0zVmDvqInpU695f29Iy7sNW3U5RIogcs740oUp2Kdv5wuITwnIx84cnO.e467/IV1lPnvMCr0pd1dgS0a.RV5eBJr03Q65Xy61R",
  64       "2",
  65       NULL }, 0 },
  66   { { "F//////////oG/QeY5emZJ4ncABWDmSqIa2JWYAPynq0Wk.fZiJco9HIWXvZZG4tU.L6RFDEaCRC2iARV9V53TFuJLjRL72HUI5jNPYNdx6z4n2wQOtxMiB/rosz0QtxUuuQ/jQYP.bhfya4NnB7.P9A6PHxEPJWV//////////",
  67       "5",
  68       "oakley prime 2" }, 0 },
  69   { { "Ewl2hcjiutMd3Fu2lgFnUXWSc67TVyy2vwYCKoS9MLsrdJVT9RgWTCuEqWJrfB6uE3LsE9GkOlaZabS7M29sj5TnzUqOLJMjiwEzArfiLr9WbMRANlF68N5AVLcPWvNx6Zjl3m5Scp0BzJBz9TkgfhzKJZ.WtP3Mv/67I/0wmRZ",
  70       "2",
  71       NULL }, 0 },
  72 };
  73
  74 _TYPE( int )
  75 t_getprecount()
  76 {
  77   return (sizeof(pre_params) / sizeof(struct pre_struct));
  78 }
  79
  80 static struct t_confent sysconf;
  81
  82 /* id is index origin 1 */
  83
  84 _TYPE( struct t_confent * )
  85 gettcid
  86 (id)
  87      int id;
  88 {
  89         struct t_preconf *tcp;
  90
  91         if (id <= 0 || id > t_getprecount()) {
  92                 return NULL;
  93         }
  94         tcp = t_getpreparam(id - 1);
  95         sysconf.index = id;
  96         sysconf.modulus = tcp->modulus;
  97         sysconf.generator = tcp->generator;
  98
  99         return &sysconf;
 100 }
 101
 102 _TYPE( struct t_preconf * )
 103 t_getpreparam(idx)
 104      int idx;
 105 {
 106   if(pre_params[idx].state == 0) {
 107     /* Wire up storage */
 108     pre_params[idx].preconf.modulus.data = pre_params[idx].modbuf;
 109     pre_params[idx].preconf.generator.data = pre_params[idx].genbuf;
 110
 111     /* Convert from b64 to t_num */
 112     pre_params[idx].preconf.modulus.len = t_fromb64(pre_params[idx].preconf.modulus.data, pre_params[idx].preconf.mod_b64);
 113     pre_params[idx].preconf.generator.len = t_fromb64(pre_params[idx].preconf.generator.data, pre_params[idx].preconf.gen_b64);
 114
 115     pre_params[idx].state = 1;
 116   }
 117   return &(pre_params[idx].preconf);
 118 }