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/**************************************************************************
*
* Copyright (c) 2013 Alcatel-Lucent
*
* Alcatel Lucent licenses this file to You under the Apache License,
* Version 2.0 (the "License"); you may not use this file except in
* compliance with the License. A copy of the License is contained the
* file LICENSE at the top level of this repository.
* You may also obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
**************************************************************************
*
* dhcp_01.c:
* This is the PPA-specific code used for Videotron Market trial.
* It was built from the dhcp_00.c DHCP-extension template file.
*
* Original author: Ed Sutter (ed.sutter@alcatel-lucent.com)
*
*/
#include "config.h"
#include "cpuio.h"
#include "ether.h"
#include "tfs.h"
#include "tfsprivate.h"
#include "genlib.h"
#include "stddefs.h"
/* Vendor specific option definitions: */
#define VS_PROXYIP 1
#define VS_PHONENUM 2
#define VS_CODER 3
#define VS_PPADHCPSRVR 4
#define VS_MINNETDELAY 5
#define VS_MAXNETDELAY 6
#define VS_APPINFO 7
#define VS_CODERCTL 8
#define VS_NAMEVAL 99
#define PPADHCPSRVR_STR "PPADHCPSRVR"
/* ValidDHCPOffer():
* Target issued the DISCOVER, the incoming packet is the server's
* OFFER reply. If the offer contains the vendor specific
* VS_PPADHCPSRVR option and the string within that
* option is correct, then accept the offer; by issuing a request.
*/
ValidDHCPOffer(struct dhcphdr *dhdr)
{
uchar *op, *op1;
op = op1 = 0;
op1 = DhcpGetOption(DHCPOPT_VENDORSPECIFICINFO,dhdr+1);
if(op1) {
op = DhcpGetOption(VS_PPADHCPSRVR,op1+2);
}
if(op) {
if(!strncmp(op+2,PPADHCPSRVR_STR,sizeof(PPADHCPSRVR_STR)-1)) {
return(1);
}
}
return(0);
}
/* buildDhcpHdr():
* Called by dhcpboot.c to allow application-specific header stuff to
* be added to header. Return 0 if generic stuff in dhcpboot.c is to be
* used; else return 1 and the calling code will assume this function is
* dealing with it (see dhcpboot.c for basic idea).
*/
int
buildDhcpHdr(struct dhcphdr *dhcpdata)
{
return(0);
}
/* DhcpBootpDone():
* Called at the end of the Bootp or Dhcp transaction.
* Input...
* bootp: 1 if BOOTP; else DHCP.
* dhdr: pointer to dhcp or bootp header.
* vsize: size of vendor specific area (for bootp this is fixed at 64,
* but for dhcp it is variable).
*/
void
DhcpBootpDone(int bootp, struct dhcphdr *dhdr, int vsize)
{
return;
}
void
SetPPAOption(type,op1,varname)
int type;
uchar *op1;
char *varname;
{
uchar *op, tmp;
op = DhcpGetOption(type,op1+2);
if(op) {
tmp = op[*(op+1)+2];
op[*(op+1)+2] = 0;
DhcpSetEnv(varname,op+2);
op[*(op+1)+2] = tmp;
}
}
/* DhcpVendorSpecific():
* Process vendor specific stuff within the incoming dhcp header.
*/
DhcpVendorSpecific(struct dhcphdr *dhdr)
{
ulong ip;
uchar *op, *op1, buf[16], tmp;
op = op1 = 0;
op1 = DhcpGetOption(DHCPOPT_VENDORSPECIFICINFO,dhdr+1);
if(op1) {
/* Get PROXY_IP and BPROXY_IP (optionally): */
op = DhcpGetOption(VS_PROXYIP,op1+2);
if(op) {
memcpy(&ip,op+2,4);
DhcpSetEnv("PROXY_IP",IpToString(ip,buf));
if(*(op+1) == 8) {
memcpy(&ip,op+6,4);
DhcpSetEnv("BPROXY_IP",IpToString(ip,buf));
}
}
/* Get PPA phone numbers (1 or 2). */
op = DhcpGetOption(VS_PHONENUM,op1+2);
if(op) {
char *space;
tmp = op[*(op+1)+2];
op[*(op+1)+2] = 0;
space = strchr(op+2,' ');
if(space) {
*space = 0;
DhcpSetEnv("LINE0_NUMBER",op+2);
DhcpSetEnv("LINE1_NUMBER",space+1);
*space = ' ';
} else {
DhcpSetEnv("LINE0_NUMBER",op+2);
}
op[*(op+1)+2] = tmp;
}
/* Set Coder type: */
SetPPAOption(VS_CODER,op1,"CODER");
/* Set Coder control: */
SetPPAOption(VS_CODERCTL,op1,"CODERCTL");
/* Set minimum network delay setting: */
SetPPAOption(VS_MINNETDELAY,op1,"MIN_NET_DELAY");
/* Set maximum network delay setting: */
SetPPAOption(VS_MAXNETDELAY,op1,"MAX_NET_DELAY");
/* Set appinfo: */
SetPPAOption(VS_APPINFO,op1,"APPINFO");
}
/* Check for VS_NAMEVAL here...
* If the Vendor-Specific-Information is present, and within that
* information there is a sub-option of VS_NAMEVAL,
* then consider the content of that sub-option to be one or more
* strings (separated by a comma) of the format "VARNAME=VALUE".
* This is used to allow the DHCP server to configure shell variables
* into the environment prior to the monitor turning over control to
* the application.
* Two examples of VS_NAMEVAL strings:
* First, just one name-value combination...
* VARNAME=VALUE
* Second, a multiple name-value combination...
* VARNAME=VALUE,VAR1=ABC,IP=1.2.3.4
*/
op = op1 = 0;
op1 = DhcpGetOption(DHCPOPT_VENDORSPECIFICINFO,dhdr+1);
if(op1) {
op = DhcpGetOption(VS_NAMEVAL,op1+2);
}
if(op) {
int len;
uchar *end, tmp;
uchar *name, *value, *eqsign, *comma, *base;
op++;
len = (int)*op++;
base = op;
tmp = base[len];
base[len] = 0;
end = base + len;
while(op < end) {
eqsign = (uchar *)strchr(op,'=');
if(!eqsign) {
break;
}
name = op;
*eqsign = 0;
value = eqsign+1;
comma = (uchar *)strchr(value,',');
if(comma) {
*comma = 0;
op = comma+1;
} else {
op = end;
}
DhcpSetEnv(name,value);
*eqsign = '=';
*comma = ',';
}
base[len] = tmp;
}
}
int
printDhcpVSopt(int vsopt, int vsoptlen, char *options)
{
switch(vsopt) {
case VS_PROXYIP:
for(i=0; i<vsoptlen; i++) {
printf("%d ",(unsigned int)*options++);
}
break;
case VS_CODER:
case VS_NAMEVAL:
case VS_MINNETDELAY:
case VS_MAXNETDELAY:
case VS_PPADHCPSRVR:
case VS_PHONENUM:
case VS_APPINFO:
for(i=0; i<vsoptlen; i++) {
printf("%c",*options++);
}
break;
default:
return(0);
}
return(1);
}
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