freebsd-dev/usr.sbin/i4b/isdntel/alias.c

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/*
* Copyright (c) 1997, 1999 Hellmuth Michaelis. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*---------------------------------------------------------------------------
*
* isdntel - isdn4bsd telephone answering machine support
* ======================================================
*
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* $Id: alias.c,v 1.9 1999/12/13 21:25:26 hm Exp $
*
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* $FreeBSD$
*
* last edit-date: [Mon Dec 13 21:53:37 1999]
*
*----------------------------------------------------------------------------*/
#include "defs.h"
#include "alias.h"
static struct alias *firsta = NULL;
#define MAXBUFSZ 256
/*---------------------------------------------------------------------------*
* read in and init aliases
*---------------------------------------------------------------------------*/
void
init_alias(char *filename)
{
FILE *fp;
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unsigned char buffer[MAXBUFSZ + 1];
unsigned char number[MAXBUFSZ + 1];
unsigned char name[MAXBUFSZ + 1];
unsigned char *s, *d;
struct alias *newa = NULL;
struct alias *lasta = NULL;
if((fp = fopen(filename, "r")) == NULL)
return;
while((fgets(buffer, MAXBUFSZ, fp)) != NULL)
{
if(buffer[0] == '#' || buffer[0] == ' ' ||
buffer[0] == '\t' || buffer[0] == '\n')
{
continue;
}
s = buffer;
d = number;
while(*s && (isdigit(*s)))
*d++ = *s++;
*d = '\0';
while(*s && (isspace(*s)))
s++;
d = name;
while(*s && (isprint(*s)))
*d++ = *s++;
*d = '\0';
if((strlen(number) > 1) && (strlen(name) > 1))
{
if((newa = (struct alias *) malloc(sizeof(struct alias))) == NULL)
fatal("malloc failed for struct alias");
if((newa->number = (char *) malloc(strlen(number)+1)) == NULL)
fatal("malloc failed for number alias");
if((newa->name = (char *) malloc(strlen(name)+1)) == NULL)
fatal("malloc failed for name alias");
strcpy(newa->name, name);
strcpy(newa->number, number);
newa->next = NULL;
if(firsta == NULL)
{
firsta = newa;
}
else
{
lasta->next = newa;
}
lasta = newa;
}
}
fclose(fp);
}
/*---------------------------------------------------------------------------*
* read in and init aliases
*---------------------------------------------------------------------------*/
char *
get_alias(char *number)
{
struct alias *ca = NULL;
if(firsta == NULL)
return(NULL);
ca = firsta;
for(;;)
{
if(strlen(number) == strlen(ca->number))
{
if(!(strcmp(number, ca->number)))
return(ca->name);
}
if(ca->next == NULL)
break;
ca = ca->next;
}
return(NULL);
}
/* EOF */