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/* ### Modified by P.Saratxaga on 4 Jan 1996 ###
* - added pktpwlist from T.Tanaka
* - added pkt 2.2 support
* - added fsc-0048 support
*/
#include <stdio.h>
#include <string.h>
#include "lutil.h"
#include "xutil.h"
#include "ftn.h"
#include "bread.h"
#include "config.h"
#define min(a,b) ((a) <= (b) ? (a) : (b))
faddr pktfrom;
char pktpwd[9];
int getheader(f,t,pkt)
faddr *f,*t;
FILE *pkt;
{
int i,pwdok;
int capword,capvalid;
int tome,pointcheck;
int pkt_sub;
fa_list *al;
char *p,*pktpassword;
f->domain=NULL;
f->name=NULL;
t->domain=NULL;
t->name=NULL;
debug(5,"from node: %u",f->node=iread(pkt));
debug(5,"to node: %u",t->node=iread(pkt));
debug(5,"year : %u",capword=iread(pkt));
debug(5,"month : %u",capvalid=iread(pkt));
debug(5,"day : %u",iread(pkt));
debug(5,"hour : %u",iread(pkt));
debug(5,"min : %u",iread(pkt));
debug(5,"sec : %u",iread(pkt));
debug(5,"rate : %u",pkt_sub=iread(pkt));
if (pkt_sub==2) {
debug(5,"In fact it is a pkt 2.2 packet; so we have");
debug(5,"from pnt : %u",f->point=capword);
debug(5,"to pnt : %u",t->point=capvalid);
debug(5,"subver : %u",pkt_sub);
debug(5,"instead of year, month and rate respectively");
debug(5,"(hour, min, sec are meaningless)");
} else { pkt_sub=0; /* keep pkt sub version at 0 */ }
debug(5,"ver : %u",iread(pkt));
f->net=iread(pkt);
if ((f->net==-1) && (pkt_sub==0)) {
debug(5,"This is an fsc-0048 packet from a point");
} else {
debug(5,"from net : %u",f->net);
}
debug(5,"to net : %u",t->net=iread(pkt));
debug(5,"prodx : 0x%04x",iread(pkt));
for (i=0;i<8;i++) pktpwd[i]=getc(pkt);
pktpwd[8]='\0';
for (p=pktpwd+7;(p >= pktpwd) && (*p == ' ');p--) *p='\0';
debug(5,"password : %s",pktpwd);
if (pktpwd[0]) f->name=pktpwd;
debug(5,"from zone: %u",f->zone=iread(pkt));
debug(5,"to zone: %u",t->zone=iread(pkt));
if (pkt_sub==2) {
for (i=0;i<8;i++) *(p+i)=getc(pkt);
*(p+8)='\0';
debug(5,"from dom : %s",p);
if (*p) f->domain=xstrcpy(p);
for (i=0;i<8;i++) *(p+i)=getc(pkt);
*(p+8)='\0';
debug(5,"to dom : %s",p);
if (*p) t->domain=xstrcpy(p);
} else {
if ((f->net==-1) && (pkt_sub==0)) {
debug(5,"from net : %u",f->net=iread(pkt));
} else {
debug(5,"filler : 0x%04x",iread(pkt));
}
debug(5,"capvalid : 0x%04x",capvalid=iread(pkt));
debug(5,"prodcode : 0x%04x",iread(pkt));
debug(5,"capword : 0x%04x",capword=iread(pkt));
debug(5,"from zone: %u",iread(pkt));
debug(5,"to zone: %u",iread(pkt));
debug(5,"from pnt : %u",f->point=iread(pkt));
debug(5,"to pnt : %u",t->point=iread(pkt));
}
debug(5,"proddata : 0x%08lx",lread(pkt));
if (feof(pkt) || ferror(pkt))
{
logerr("$Could not read packet header");
return 2;
}
pointcheck=0;
if (pkt_sub==2) {
pointcheck=1;
} else {
if (((capword >> 8) == (capvalid & 0xff)) &&
((capvalid >> 8) == (capword & 0xff)))
pointcheck=(capword & 0x0001);
else capword=0;
}
debug(5,"capword=%04x, pointcheck=%s",capword,pointcheck?"yes":"no");
pktfrom.name=NULL;
pktfrom.domain=f->domain;
pktfrom.zone=f->zone;
pktfrom.net=f->net;
pktfrom.node=f->node;
if (pointcheck) pktfrom.point=f->point;
else pktfrom.point=0;
tome=0;
for (al=whoami;al;al=al->next)
{
if (((t->domain == NULL) ||
(strncasecmp(al->addr->domain,t->domain,
min(strlen(al->addr->domain),strlen(t->domain))))) &&
((t->zone == 0) || (t->zone == al->addr->zone)) &&
(t->net == al->addr->net) &&
(t->node == al->addr->node) &&
((!pointcheck) || (t->point == al->addr->point)))
tome=1;
}
pwdok=0;
pktpassword=NULL;
/* look between packetpasswd lines */
for (al=pktpwlist;al;al=al->next)
{
if (((f->domain == NULL) ||
(strncasecmp(al->addr->domain,f->domain,
min(strlen(al->addr->domain),strlen(f->domain))))) &&
((f->zone == 0) || (f->zone == al->addr->zone)) &&
(f->net == al->addr->net) &&
(f->node == al->addr->node) &&
((!pointcheck) || (f->point == al->addr->point)))
{
pktpassword=al->addr->name;
pwdok=1;
}
}
/* if not matching packetpasswd lines, search in password ones */
if (!pwdok) for (al=pwlist;al;al=al->next)
{
if (((f->domain == NULL) ||
(strncasecmp(al->addr->domain,f->domain,
min(strlen(al->addr->domain),strlen(f->domain))))) &&
((f->zone == 0) || (f->zone == al->addr->zone)) &&
(f->net == al->addr->net) &&
(f->node == al->addr->node) &&
((!pointcheck) || (f->point == al->addr->point)))
{
pktpassword=al->addr->name;
pwdok=1;
}
}
/* if we have a password (general or for packets) for that address */
if ((pwdok) && (strcasecmp(pktpassword,pktpwd) != 0))
{
loginf("password got \"%s\", expected \"%s\"",
pktpwd,pktpassword);
pwdok=0;
}
loginf("packet from node %s",ascfnode(f,0x1f));
loginf(" to node %s",ascfnode(t,0x1f));
if (!tome) return 3;
else if (!pwdok) return 4;
else return 0;
}
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