usr.sbin/i4b/isdntel/alias.c

   1 /*
   2  * Copyright (c) 1997, 1999 Hellmuth Michaelis. 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  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  23  * SUCH DAMAGE.
  24  *
  25  *---------------------------------------------------------------------------
  26  *
  27  *      isdntel - isdn4bsd telephone answering machine support
  28  *      ======================================================
  29  *
  30  *      $Id: alias.c,v 1.9 1999/12/13 21:25:26 hm Exp $
  31  *
  32  * $FreeBSD: src/usr.sbin/i4b/isdntel/alias.c,v 1.6.2.1 2001/08/01 17:45:06 obrien Exp $
  33  * $DragonFly: src/usr.sbin/i4b/isdntel/alias.c,v 1.2 2003/06/17 04:29:55 dillon Exp $
  34  *
  35  *      last edit-date: [Mon Dec 13 21:53:37 1999]
  36  *
  37  *----------------------------------------------------------------------------*/
  38
  39 #include "defs.h"
  40 #include "alias.h"
  41
  42 static struct alias *firsta = NULL;
  43
  44 #define MAXBUFSZ        256
  45
  46 /*---------------------------------------------------------------------------*
  47  *      read in and init aliases
  48  *---------------------------------------------------------------------------*/
  49 void
  50 init_alias(char *filename)
  51 {
  52         FILE *fp;
  53         unsigned char buffer[MAXBUFSZ + 1];
  54         unsigned char number[MAXBUFSZ + 1];
  55         unsigned char name[MAXBUFSZ + 1];
  56         unsigned char *s, *d;
  57         struct alias *newa = NULL;
  58         struct alias *lasta = NULL;
  59
  60         if((fp = fopen(filename, "r")) == NULL)
  61                 return;
  62
  63         while((fgets(buffer, MAXBUFSZ, fp)) != NULL)
  64         {
  65                 if(buffer[0] == '#'  || buffer[0] == ' ' ||
  66                    buffer[0] == '\t' || buffer[0] == '\n')
  67                 {
  68                         continue;
  69                 }
  70
  71                 s = buffer;
  72                 d = number;
  73
  74                 while(*s && (isdigit(*s)))
  75                         *d++ = *s++;
  76
  77                 *d = '\0';
  78
  79                 while(*s && (isspace(*s)))
  80                         s++;
  81
  82                 d = name;
  83
  84                 while(*s && (isprint(*s)))
  85                         *d++ = *s++;
  86
  87                 *d = '\0';
  88
  89                 if((strlen(number) > 1) && (strlen(name) > 1))
  90                 {
  91                         if((newa = (struct alias *) malloc(sizeof(struct alias))) == NULL)
  92                                 fatal("malloc failed for struct alias");
  93                         if((newa->number = (char *) malloc(strlen(number)+1)) == NULL)
  94                                 fatal("malloc failed for number alias");
  95                         if((newa->name = (char *) malloc(strlen(name)+1)) == NULL)
  96                                 fatal("malloc failed for name alias");
  97                         strcpy(newa->name, name);
  98                         strcpy(newa->number, number);
  99                         newa->next = NULL;
 100
 101                         if(firsta == NULL)
 102                         {
 103                                 firsta = newa;
 104                         }
 105                         else
 106                         {
 107                                 lasta->next = newa;
 108                         }
 109                         lasta = newa;
 110                 }
 111         }
 112         fclose(fp);
 113 }
 114
 115 /*---------------------------------------------------------------------------*
 116  *      read in and init aliases
 117  *---------------------------------------------------------------------------*/
 118 char *
 119 get_alias(char *number)
 120 {
 121         struct alias *ca = NULL;
 122
 123         if(firsta == NULL)
 124                 return(NULL);
 125
 126         ca = firsta;
 127
 128         for(;;)
 129         {
 130                 if(strlen(number) == strlen(ca->number))
 131                 {
 132                         if(!(strcmp(number, ca->number)))
 133                                 return(ca->name);
 134                 }
 135                 if(ca->next == NULL)
 136                         break;
 137                 ca = ca->next;
 138         }
 139         return(NULL);
 140 }
 141
 142 /* EOF */