570 lines
13 KiB
C
570 lines
13 KiB
C
/*
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* Copyright (c) 1997, 1999 Hellmuth Michaelis. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*---------------------------------------------------------------------------
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*
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* i4b_q932fac.c - Q932 facility handling
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* --------------------------------------
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*
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* $FreeBSD$
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*
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* last edit-date: [Sun Feb 14 10:34:02 1999]
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*
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*---------------------------------------------------------------------------*/
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#ifdef __FreeBSD__
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#include "i4bq931.h"
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#else
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#define NI4BQ931 1
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#endif
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#if NI4BQ931 > 0
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#include <sys/param.h>
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#if defined(__FreeBSD__) && __FreeBSD__ >= 3
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#include <sys/ioccom.h>
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#else
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#include <sys/ioctl.h>
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#endif
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#ifdef __FreeBSD__
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#include <machine/i4b_debug.h>
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#include <machine/i4b_ioctl.h>
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#else
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#include <i4b/i4b_debug.h>
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#include <i4b/i4b_ioctl.h>
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#endif
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#include <i4b/include/i4b_isdnq931.h>
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#include <i4b/include/i4b_l2l3.h>
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#include <i4b/include/i4b_l3l4.h>
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#include <i4b/include/i4b_mbuf.h>
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#include <i4b/layer3/i4b_l3.h>
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#include <i4b/layer3/i4b_l3fsm.h>
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#include <i4b/layer3/i4b_q931.h>
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#include <i4b/layer3/i4b_q932fac.h>
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#include <i4b/layer4/i4b_l4.h>
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static int do_component(int length);
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static void next_state(int class, int form, int code, int val);
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static int byte_len;
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static unsigned char *byte_buf;
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static int state;
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static int units;
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static int operation_value;
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/*---------------------------------------------------------------------------*
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* decode Q.931/Q.932 facility info element
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*---------------------------------------------------------------------------*/
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int
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i4b_aoc(unsigned char *buf, call_desc_t *cd)
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{
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int len;
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cd->units_type = CHARGE_INVALID;
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cd->units = -1;
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buf++; /* length */
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len = *buf;
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buf++; /* protocol profile */
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switch(*buf & 0x1f)
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{
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case FAC_PROTO_ROP:
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break;
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case FAC_PROTO_CMIP:
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DBGL3(L3_A_MSG, "i4b_facility", ("CMIP Protocol (Q.941), UNSUPPORTED\n"));
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return(-1);
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break;
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case FAC_PROTO_ACSE:
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DBGL3(L3_A_MSG, "i4b_facility", ("ACSE Protocol (X.217/X.227), UNSUPPORTED!\n"));
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return(-1);
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break;
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default:
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DBGL3(L3_A_ERR, "i4b_facility", ("Unknown Protocol, UNSUPPORTED!\n"));
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return(-1);
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break;
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}
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DBGL3(L3_A_MSG, "i4b_facility", ("Remote Operations Protocol\n"));
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/* next byte */
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buf++;
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len--;
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/* initialize variables for do_component */
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byte_len = 0;
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byte_buf = buf;
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state = ST_EXP_COMP_TYP;
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/* decode facility */
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do_component(len);
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switch(operation_value)
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{
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case FAC_OPVAL_AOC_D_CUR:
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cd->units_type = CHARGE_AOCD;
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cd->units = 0;
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return(0);
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break;
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case FAC_OPVAL_AOC_D_UNIT:
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cd->units_type = CHARGE_AOCD;
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cd->units = units;
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return(0);
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break;
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case FAC_OPVAL_AOC_E_CUR:
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cd->units_type = CHARGE_AOCE;
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cd->units = 0;
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return(0);
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break;
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case FAC_OPVAL_AOC_E_UNIT:
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cd->units_type = CHARGE_AOCE;
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cd->units = units;
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return(0);
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break;
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default:
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cd->units_type = CHARGE_INVALID;
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cd->units = -1;
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return(-1);
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break;
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}
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return(-1);
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}
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/*---------------------------------------------------------------------------*
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* handle a component recursively
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*---------------------------------------------------------------------------*/
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static int
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do_component(int length)
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{
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int comp_tag_class; /* component tag class */
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int comp_tag_form; /* component form: constructor or primitive */
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int comp_tag_code; /* component code depending on class */
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int comp_length = 0; /* component length */
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again:
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/*----------------------------------------*/
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/* first component element: component tag */
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/*----------------------------------------*/
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/* tag class bits */
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comp_tag_class = (*byte_buf & 0xc0) >> 6;
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switch(comp_tag_class)
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{
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case FAC_TAGCLASS_UNI:
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break;
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case FAC_TAGCLASS_APW:
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break;
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case FAC_TAGCLASS_COS:
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break;
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case FAC_TAGCLASS_PRU:
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break;
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}
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/* tag form bit */
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comp_tag_form = (*byte_buf & 0x20) > 5;
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/* tag code bits */
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comp_tag_code = *byte_buf & 0x1f;
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if(comp_tag_code == 0x1f)
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{
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comp_tag_code = 0;
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byte_buf++;
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byte_len++;
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while(*byte_buf & 0x80)
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{
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comp_tag_code += (*byte_buf & 0x7f);
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byte_buf++;
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byte_len++;
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}
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comp_tag_code += (*byte_buf & 0x7f);
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}
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else
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{
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comp_tag_code = (*byte_buf & 0x1f);
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}
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byte_buf++;
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byte_len++;
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/*--------------------------------------------*/
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/* second component element: component length */
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/*--------------------------------------------*/
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comp_length = 0;
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if(*byte_buf & 0x80)
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{
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int i = *byte_buf & 0x7f;
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byte_len += i;
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for(;i > 0;i++)
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{
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byte_buf++;
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comp_length += (*byte_buf * (i*256));
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}
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}
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else
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{
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comp_length = *byte_buf & 0x7f;
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}
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next_state(comp_tag_class, comp_tag_form, comp_tag_code, -1);
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byte_len++;
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byte_buf++;
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/*---------------------------------------------*/
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/* third component element: component contents */
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/*---------------------------------------------*/
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if(comp_tag_form) /* == constructor */
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{
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do_component(comp_length);
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}
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else
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{
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int val = 0;
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if(comp_tag_class == FAC_TAGCLASS_UNI)
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{
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switch(comp_tag_code)
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{
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case FAC_CODEUNI_INT:
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case FAC_CODEUNI_ENUM:
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case FAC_CODEUNI_BOOL:
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if(comp_length)
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{
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int i;
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for(i = comp_length-1; i >= 0; i--)
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{
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val += (*byte_buf + (i*255));
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byte_buf++;
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byte_len++;
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}
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}
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break;
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default:
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if(comp_length)
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{
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int i;
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for(i = comp_length-1; i >= 0; i--)
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{
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byte_buf++;
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byte_len++;
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}
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}
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break;
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}
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}
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else /* comp_tag_class != FAC_TAGCLASS_UNI */
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{
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if(comp_length)
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{
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int i;
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for(i = comp_length-1; i >= 0; i--)
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{
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val += (*byte_buf + (i*255));
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byte_buf++;
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byte_len++;
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}
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}
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}
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next_state(comp_tag_class, comp_tag_form, comp_tag_code, val);
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}
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if(byte_len < length)
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goto again;
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return(byte_len);
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}
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/*---------------------------------------------------------------------------*
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* invoke component
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*---------------------------------------------------------------------------*/
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static void
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F_1_1(int val)
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{
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if(val == -1)
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{
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state = ST_EXP_INV_ID;
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}
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}
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/*---------------------------------------------------------------------------*
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* return result
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*---------------------------------------------------------------------------*/
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static void
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F_1_2(int val)
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{
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if(val == -1)
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state = ST_EXP_NIX;
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}
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/*---------------------------------------------------------------------------*
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* return error
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*---------------------------------------------------------------------------*/
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static void
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F_1_3(int val)
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{
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if(val == -1)
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state = ST_EXP_NIX;
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}
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/*---------------------------------------------------------------------------*
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* reject
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*---------------------------------------------------------------------------*/
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static void
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F_1_4(int val)
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{
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if(val == -1)
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state = ST_EXP_NIX;
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}
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/*---------------------------------------------------------------------------*
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* invoke id
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*---------------------------------------------------------------------------*/
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static void
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F_2(int val)
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{
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if(val != -1)
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{
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DBGL3(L3_A_MSG, "i4b_facility", ("Invoke ID = %d\n", val));
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state = ST_EXP_OP_VAL;
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}
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}
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/*---------------------------------------------------------------------------*
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* operation value
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*---------------------------------------------------------------------------*/
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static void
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F_3(int val)
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{
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if(val != -1)
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{
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DBGL3(L3_A_MSG, "i4b_facility", ("Operation Value = %d\n", val));
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operation_value = val;
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if((val == FAC_OPVAL_AOC_D_UNIT) || (val == FAC_OPVAL_AOC_E_UNIT))
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{
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units = 0;
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state = ST_EXP_INFO;
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}
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else
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{
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state = ST_EXP_NIX;
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}
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}
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}
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/*---------------------------------------------------------------------------*
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* specific charging units
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*---------------------------------------------------------------------------*/
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static void
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F_4(int val)
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{
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if(val == -1)
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state = ST_EXP_RUL;
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}
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/*---------------------------------------------------------------------------*
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* free of charge
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*---------------------------------------------------------------------------*/
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static void
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F_4_1(int val)
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{
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if(val == -1)
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{
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DBGL3(L3_A_MSG, "i4b_facility", ("Free of Charge\n"));
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/* units = 0; XXXX */
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state = ST_EXP_NIX;
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}
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}
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/*---------------------------------------------------------------------------*
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* charge not available
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*---------------------------------------------------------------------------*/
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static void
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F_4_2(int val)
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{
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if(val == -1)
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{
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DBGL3(L3_A_MSG, "i4b_facility", ("Charge not available\n"));
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/* units = -1; XXXXXX ??? */
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state = ST_EXP_NIX;
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}
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}
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/*---------------------------------------------------------------------------*
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* recorded units list
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*---------------------------------------------------------------------------*/
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static void
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F_5(int val)
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{
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if(val == -1)
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state = ST_EXP_RU;
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}
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/*---------------------------------------------------------------------------*
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* recorded units
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*---------------------------------------------------------------------------*/
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static void
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F_6(int val)
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{
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if(val == -1)
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state = ST_EXP_RNOU;
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}
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/*---------------------------------------------------------------------------*
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* number of units
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*---------------------------------------------------------------------------*/
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static void
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F_7(int val)
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{
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if(val != -1)
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{
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DBGL3(L3_A_MSG, "i4b_facility", ("Number of Units = %d\n", val));
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units = val;
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state = ST_EXP_TOCI;
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}
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}
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/*---------------------------------------------------------------------------*
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* subtotal/total
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*---------------------------------------------------------------------------*/
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static void
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F_8(int val)
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{
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if(val != -1)
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{
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DBGL3(L3_A_MSG, "i4b_facility", ("Subtotal/Total = %d\n", val));
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/* type_of_charge = val; */
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state = ST_EXP_DBID;
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}
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}
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/*---------------------------------------------------------------------------*
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* billing_id
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*---------------------------------------------------------------------------*/
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static void
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F_9(int val)
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{
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if(val != -1)
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{
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DBGL3(L3_A_MSG, "i4b_facility", ("Billing ID = %d\n", val));
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/* billing_id = val; */
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state = ST_EXP_NIX;
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}
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}
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/*---------------------------------------------------------------------------*
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*
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*---------------------------------------------------------------------------*/
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static struct statetab {
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int currstate; /* input: current state we are in */
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int form; /* input: current tag form */
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int class; /* input: current tag class */
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int code; /* input: current tag code */
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void (*func)(int); /* output: func to exec */
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} statetab[] = {
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/* current state tag form tag class tag code function */
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/* --------------------- ---------------------- ---------------------- ---------------------- ----------------*/
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{ST_EXP_COMP_TYP, FAC_TAGFORM_CON, FAC_TAGCLASS_COS, 1, F_1_1 },
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{ST_EXP_COMP_TYP, FAC_TAGFORM_CON, FAC_TAGCLASS_COS, 2, F_1_2 },
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{ST_EXP_COMP_TYP, FAC_TAGFORM_CON, FAC_TAGCLASS_COS, 3, F_1_3 },
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{ST_EXP_COMP_TYP, FAC_TAGFORM_CON, FAC_TAGCLASS_COS, 4, F_1_4 },
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{ST_EXP_INV_ID, FAC_TAGFORM_PRI, FAC_TAGCLASS_UNI, FAC_CODEUNI_INT, F_2 },
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{ST_EXP_OP_VAL, FAC_TAGFORM_PRI, FAC_TAGCLASS_UNI, FAC_CODEUNI_INT, F_3 },
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{ST_EXP_INFO, FAC_TAGFORM_CON, FAC_TAGCLASS_UNI, FAC_CODEUNI_SEQ, F_4 },
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{ST_EXP_INFO, FAC_TAGFORM_PRI, FAC_TAGCLASS_UNI, FAC_CODEUNI_NULL, F_4_1 },
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{ST_EXP_INFO, FAC_TAGFORM_PRI, FAC_TAGCLASS_COS, 1, F_4_2 },
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{ST_EXP_RUL, FAC_TAGFORM_CON, FAC_TAGCLASS_COS, 1, F_5 },
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{ST_EXP_RU, FAC_TAGFORM_CON, FAC_TAGCLASS_UNI, FAC_CODEUNI_SEQ, F_6 },
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{ST_EXP_RNOU, FAC_TAGFORM_PRI, FAC_TAGCLASS_UNI, FAC_CODEUNI_INT, F_7 },
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{ST_EXP_TOCI, FAC_TAGFORM_PRI, FAC_TAGCLASS_COS, 2, F_8 },
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{ST_EXP_DBID, FAC_TAGFORM_PRI, FAC_TAGCLASS_COS, 3, F_9 },
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{-1, -1, -1, -1, NULL }
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};
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/*---------------------------------------------------------------------------*
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* state decode for do_component
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*---------------------------------------------------------------------------*/
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static void
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next_state(int class, int form, int code, int val)
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{
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int i;
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for(i=0; ; i++)
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{
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if((statetab[i].currstate > state) ||
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(statetab[i].currstate == -1))
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{
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break;
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}
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if((statetab[i].currstate == state) &&
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(statetab[i].form == form) &&
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(statetab[i].class == class) &&
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(statetab[i].code == code))
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{
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(*statetab[i].func)(val);
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break;
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}
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}
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}
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#endif /* NI4BQ931 > 0 */
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