git.distorted.org.uk Git - u/mdw/catacomb/blob - keycheck.h

   1 /* -*-c-*-
   2  *
   3  * $Id: keycheck.h,v 1.2 2004/04/08 01:36:15 mdw Exp $
   4  *
   5  * Framework for checking consistency of keys
   6  *
   7  * (c) 2001 Straylight/Edgeware
   8  */
   9
  10 /*----- Licensing notice --------------------------------------------------*
  11  *
  12  * This file is part of Catacomb.
  13  *
  14  * Catacomb is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU Library General Public License as
  16  * published by the Free Software Foundation; either version 2 of the
  17  * License, or (at your option) any later version.
  18  *
  19  * Catacomb is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU Library General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU Library General Public
  25  * License along with Catacomb; if not, write to the Free
  26  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  27  * MA 02111-1307, USA.
  28  */
  29
  30 #ifndef CATACOMB_KEYCHECK_H
  31 #define CATACOMB_KEYCHECK_H
  32
  33 #ifdef __cplusplus
  34   extern "C" {
  35 #endif
  36
  37 /*----- Header files ------------------------------------------------------*/
  38
  39 #ifndef CATACOMB_MP_H
  40 #  include "mp.h"
  41 #endif
  42
  43 /*----- Data structures ---------------------------------------------------*/
  44
  45 enum {
  46   KCSEV_ALL,
  47   KCSEV_INFO = KCSEV_ALL,
  48   KCSEV_WARN,
  49   KCSEV_ERR,
  50   KCSEV_MAX
  51 };
  52
  53 typedef struct keycheck {
  54   unsigned sev[KCSEV_MAX];
  55   int (*func)(unsigned /*sev*/, const char */*msg*/, void */*p*/);
  56   void *p;
  57 } keycheck;
  58
  59 typedef struct keycheck_reportctx {
  60   FILE *fp;
  61   unsigned sev;
  62 } keycheck_reportctx;
  63
  64 /*----- Generic functions -------------------------------------------------*/
  65
  66 /* --- @keycheck_report@ --- *
  67  *
  68  * Arguments:   @keycheck *kc@ = keycheck state
  69  *              @unsigned sev@ = severity of this report
  70  *              @const char *msg@ = message to send along
  71  *              @...@ = things to fill the message in with
  72  *
  73  * Returns:     Zero to continue, or nonzero to stop and give up.
  74  *
  75  * Use:         Reports a message to the user function.
  76  */
  77
  78 extern int keycheck_report(keycheck */*kc*/, unsigned /*sev*/,
  79                            const char */*msg*/, ...);
  80
  81 /* --- @keycheck_init@ --- *
  82  *
  83  * Arguments:   @keycheck *kc@ = pointer to block to initialize
  84  *              @int (*func)(unsigned sev, const char *msg, void *p)@ =
  85  *                      handler function for problems
  86  *              @void *p@ = pointer to give to handler
  87  *
  88  * Returns:     ---
  89  *
  90  * Use:         Initializes a key checking context.
  91  */
  92
  93 extern void keycheck_init(keycheck */*kc*/,
  94                           int (*/*func*/)(unsigned /*sev*/,
  95                                           const char */*msg*/,
  96                                           void */*p*/),
  97                           void */*p*/);
  98
  99 /* --- @keycheck_allclear@ --- *
 100  *
 101  * Arguments:   @keycheck *kc@ = pointer to keycheck context
 102  *              @unsigned sev@ = minimum severity to care about
 103  *
 104  * Returns:     Nonzero if no problems of @sev@ or above were noticed.
 105  */
 106
 107 extern int keycheck_allclear(keycheck */*kc*/, unsigned /*sev*/);
 108
 109 /*----- A standard report function ----------------------------------------*/
 110
 111 /* --- @keycheck_stdreport@ --- *
 112  *
 113  * Arguments:   @unsigned sev@ = problem severity
 114  *              @const char *msg@ = message to report
 115  *              @void *p@ = pointer to a @keycheck_reportctx@ structure
 116  *
 117  * Returns:     Zero.
 118  *
 119  * Use:         Reports a message to stderr.
 120  */
 121
 122 extern int keycheck_stdreport(unsigned /*sev*/,
 123                               const char */*msg*/, void */*p*/);
 124
 125 /*----- Special support functions for large integers ----------------------*/
 126
 127 /* --- @keycheck_prime@ --- *
 128  *
 129  * Arguments:   @keycheck *kc@ = keycheck state
 130  *              @unsigned sev@ = severity if not prime
 131  *              @mp *m@ = a number to check for primality
 132  *              @const char *name@ = name of this number
 133  *
 134  * Returns:     Zero if OK, or return status from function.
 135  *
 136  * Use:         Checks that a number is prime.
 137  */
 138
 139 extern int keycheck_prime(keycheck */*kc*/, unsigned /*sev*/,
 140                           mp */*m*/, const char */*name*/);
 141
 142 /*----- That's all, folks -------------------------------------------------*/
 143
 144 #ifdef __cplusplus
 145   }
 146 #endif
 147
 148 #endif