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

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