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freebsd-skq/usr.sbin/i4b/isdnd/rates.c

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/*
* Copyright (c) 1997 Gary Jennejohn. All rights reserved.
*
* 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.
* 3. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
* 4. Altered versions must be plainly marked as such, and must not be
* misrepresented as being the original software and/or documentation.
*
* 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.
*
*---------------------------------------------------------------------------
*
* i4b daemon - charging rates description file handling
* -----------------------------------------------------
*
* $Id: rates.c,v 1.11 2000/10/09 12:53:29 hm Exp $
*
* $FreeBSD$
*
* last edit-date: [Sat May 13 13:10:09 2006]
*
*---------------------------------------------------------------------------*/
static char error[256];
static int getrate(int rate_type);
#ifdef PARSE_DEBUG_MAIN
#include <stdio.h>
#define MAIN
#define ERROR (-1)
extern int got_rate;
int main( int argc, char **argv )
{
int ret;
ret = readrates("/etc/isdn/isdnd.rates");
if(ret == ERROR)
fprintf(stderr, "readrates returns [%d], [%s]\n", ret, error);
else
{
int type = 0;
got_rate = 1;
fprintf(stderr, "readrates returns [%d]\n", ret);
for( type=0; type<4; type++ )
{
int unit = getrate( type );
fprintf(stderr, "getrate(%d) => %d\n", type, unit );
}
}
return(ret);
}
#endif
#include "isdnd.h"
/*---------------------------------------------------------------------------*
* parse rates file
*---------------------------------------------------------------------------*/
int
readrates(char *filename)
{
char buffer[MAXPATHLEN];
register char *bp;
struct rates *rt, *ort;
int rateindx;
int indx;
int line = 0;
FILE *fp;
int first;
#if DEBUG
int i, j;
#endif
indx = 0;
rt = ort = NULL;
if((fp = fopen(filename, "r")) == NULL)
{
snprintf(error, sizeof(error), "error open %s: %s", filename, sys_errlist[errno]);
rate_error = error;
return(WARNING);
}
while((fgets(buffer, MAXPATHLEN, fp)) != NULL)
{
line++;
/* comments */
if(buffer[0] == '#' || buffer[0] == ' ' ||
buffer[0] == '\t' || buffer[0] == '\n')
{
continue;
}
bp = &buffer[0];
/* rate type */
if (*bp == 'r' && *(bp+1) == 'a' && isdigit(*(bp+2)))
{
rateindx = *(bp+2) - '0';
bp += 3;
/* eat space delimiter */
while(isspace(*bp))
bp++;
}
else
{
snprintf(error, sizeof(error), "rates: invalid rate type %c%c%c in line %d", *bp, *(bp+1), *(bp+2), line);
goto rate_error;
}
if (rateindx >= NRATES)
{
snprintf(error, sizeof(error), "rates: invalid rate index %d in line %d", rateindx, line);
goto rate_error;
}
/* day */
if(isdigit(*bp) && *bp >= '0' && *bp <= '6')
{
indx = *bp - '0';
DBGL(DL_RATES, (llog(LL_DBG, "rates: index = %d", indx)));
}
else
{
snprintf(error, sizeof(error), "rates: invalid day digit %c in line %d", *bp, line);
goto rate_error;
}
if(rates[rateindx][indx] == NULL)
{
rt = (struct rates *)malloc(sizeof (struct rates));
if (rt == NULL)
{
snprintf(error, sizeof(error), "rates: cannot malloc space for rate structure");
goto rate_error;
}
rt->next = NULL;
rates[rateindx][indx] = rt;
}
bp++;
/* eat space delimiter */
while(isspace(*bp))
bp++;
/* now loop to get the rates entries */
first = 1;
while(*bp && isdigit(*bp))
{
int hour = 0;
int min = 0;
if(first)
{
first = 0;
}
else
{
ort = rt;
rt = (struct rates *)malloc(sizeof (struct rates));
if (rt == NULL)
{
snprintf(error, sizeof(error), "rates: cannot malloc space2 for rate structure");
goto rate_error;
}
ort->next = rt;
rt->next = NULL;
}
/* start hour */
if(isdigit(*bp) && isdigit(*(bp+1)))
{
hour = atoi(bp);
bp += 2;
}
else
{
snprintf(error, sizeof(error), "rates: start_hr error in line %d", line);
goto rate_error;
}
/* point */
if(*bp == '.')
{
bp++;
}
else
{
snprintf(error, sizeof(error), "rates: no '.' after start_hr in line %d", line);
goto rate_error;
}
/* start minute */
if(isdigit(*bp) && isdigit(*(bp+1)))
{
min = atoi(bp);
bp += 2;
}
else
{
snprintf(error, sizeof(error), "rates: start_min error in line %d", line);
goto rate_error;
}
rt->start_time = hour*60 + min;
/* minus */
if(*bp == '-')
{
bp++;
}
else
{
snprintf(error, sizeof(error), "rates: no '-' after start_min in line %d", line);
goto rate_error;
}
/* end hour */
if(isdigit(*bp) && isdigit(*(bp+1)))
{
hour = atoi(bp);
bp += 2;
}
else
{
snprintf(error, sizeof(error), "rates: end_hr error in line %d", line);
goto rate_error;
}
/* point */
if(*bp == '.')
{
bp++;
}
else
{
snprintf(error, sizeof(error), "rates: no '.' after end_hr in line %d", line);
goto rate_error;
}
/* end minute */
if(isdigit(*bp) && isdigit(*(bp+1)))
{
min = atoi(bp);
bp += 2;
}
else
{
snprintf(error, sizeof(error), "rates: end_min error in line %d", line);
goto rate_error;
}
/* if hour is 0 assume it means midnight */
if( hour == 0 )
hour = 24;
rt->end_time = hour * 60 + min;
if( rt->end_time <= rt->start_time )
{
snprintf(error, sizeof(error), "rates: end_time must be greater then start_time %d", line);
goto rate_error;
}
/* colon */
if(*bp == ':')
{
bp++;
}
else
{
snprintf(error, sizeof(error), "rates: no ':' after end_min in line %d", line);
goto rate_error;
}
/* time */
if(isdigit(*bp))
{
rt->rate = atoi(bp);
while(!isspace(*bp))
bp++;
}
else
{
snprintf(error, sizeof(error), "rates: first rate digit error in line %d", line);
goto rate_error;
}
/* eat space delimiter */
while(isspace(*bp))
bp++;
}
}
#if DEBUG
if(debug_flags & DL_RATES)
{
for (j = 0; j < NRATES; j++)
{
for (i = 0; i < NDAYS; i++)
{
if (rates [j][i] != NULL)
{
rt = rates [j][i];
for (; rt; rt = rt->next)
{
llog(LL_DBG, "rates: index %d day %d = %d.%2.2d-%d.%2.2d:%d",
j, i, rt->start_time/60, rt->start_time%60,
rt->end_time/60,rt->end_time%60,rt->rate);
}
}
else
{
llog(LL_DBG, "rates: NO entry for day %d !!\n", i);
}
}
}
}
#endif
fclose(fp);
return(GOOD);
rate_error:
fclose(fp);
rate_error = error;
return(ERROR);
}
#ifndef PARSE_DEBUG_MAIN
/*---------------------------------------------------------------------------*
* get unit length time from configured source
*---------------------------------------------------------------------------*/
int
get_current_rate(cfg_entry_t *cep, int logit)
{
int rt;
switch(cep->unitlengthsrc)
{
case ULSRC_CMDL: /* specified on commandline */
if(logit)
llog(LL_CHD, "%05d %s rate %d sec/unit (cmdl)",
cep->cdid, cep->name, unit_length);
return(unit_length);
break;
case ULSRC_CONF: /* get it from config file */
if(logit)
llog(LL_CHD, "%05d %s rate %d sec/unit (conf)",
cep->cdid, cep->name, cep->unitlength);
return(cep->unitlength);
case ULSRC_RATE: /* get it dynamic from ratesfile*/
if(!got_rate) /* got valid rates struct ?? */
{
if(logit)
llog(LL_CHD, "%05d %s rate %d sec/unit (no ratefile)",
cep->cdid, cep->name, UNITLENGTH_DEFAULT);
return(UNITLENGTH_DEFAULT);
}
if((cep->ratetype >= NRATES) ||
(cep->ratetype == INVALID_RATE))
{
if(logit)
llog(LL_CHD, "%05d %s rate %d sec/unit (rate out of range)",
cep->cdid, cep->name, UNITLENGTH_DEFAULT);
return(UNITLENGTH_DEFAULT);
}
if((rt = getrate(cep->ratetype)) != -1)
{
if(logit)
llog(LL_CHD, "%05d %s rate %d sec/unit (rate)",
cep->cdid, cep->name, rt);
return(rt);
}
if(logit)
llog(LL_CHD, "%05d %s rate %d sec/unit (ratescan fail)",
cep->cdid, cep->name, UNITLENGTH_DEFAULT);
return(UNITLENGTH_DEFAULT);
break;
case ULSRC_DYN: /* dynamically calculated from AOC */
if((rt = getrate(cep->ratetype)) != -1)
{
if(logit)
llog(LL_CHD, "%05d %s rate %d sec/unit (aocd, rate)",
cep->cdid, cep->name, rt);
return(rt);
}
if(logit)
llog(LL_CHD, "%05d %s rate %d sec/unit (aocd, default)",
cep->cdid, cep->name, UNITLENGTH_DEFAULT);
return(UNITLENGTH_DEFAULT);
break;
default:
if(logit)
llog(LL_CHD, "%05d %s rate %d sec/unit (unitlen unknown)",
cep->cdid, cep->name, UNITLENGTH_DEFAULT);
return(UNITLENGTH_DEFAULT);
break;
}
}
#endif /* PARSE_DEBUG_MAIN */
/*---------------------------------------------------------------------------*
* get the currently active rate
*---------------------------------------------------------------------------*/
static int
getrate(int rate_type )
{
struct tm *ptr;
time_t now;
register struct rates *hd;
int time_now;
if((!got_rate) ||
(rate_type >= NRATES) ||
(rate_type == INVALID_RATE))
{
return -1;
}
time(&now); /* get current time */
ptr = localtime(&now);
time_now = ptr->tm_hour*60 + ptr->tm_min;
/* walk thru the rates for weekday until rate for current time found */
for (hd = rates[rate_type][ptr->tm_wday]; hd; hd = hd->next)
{
/* current time within window ? */
if((time_now >= hd->start_time ) &&
(time_now < hd->end_time ))
{
DBGL(DL_RATES, (llog(LL_DBG, "rate=%d sec/unit (day=%d, beg=%d:%2.2d, end=%d:2.2d, current=%d:%2.2d)",
hd->rate,
ptr->tm_wday,
hd->start_time/60, hd->start_time%60,
hd->end_time/60, hd->end_time%60,
time_now/60, time_now%60)));
return hd->rate;
}
}
return -1;
}
/* EOF */
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