Changing from t3b to t4b signer

[Olafur Gudmundsson]

Edward Lewis writes:
 > There is a change in the way 8.2.2.-t3b's signer and 8.2.2.-t4b's signer
 > parse the SIG record.  The impact of this is that a signed master file
 > generated by t3b ('s signer) will produce parsing errors when t4b reads it.
 > (Specifically, reporting that the TTL field won't fit into 8 bits, for
 > larger sizes of TTL's.)
 > 
 > The fix to this is to delete all SIG records from the master file (via a
 > text editor) and then use the file as input.  Don't worry about the NXT or
 > other records, the signer will make whatever other changes are required.
 > 

Or you can use the attached awk program that handles all "well formed"
signatures and all names that do not include . as non label separator. 

	Olafur





-- Attached file included as plaintext by Listar --
-- File: add_labels.awk
-- Desc: add_labels.awk

#
# A simple awk script to make sure SIG records contain the label count in
# text format 
# This program handles:
#     $ORIGIN lines.
#     lines starting with a name
#     lines starting with @  
#     special rule for label count for wild card records
# Not handled: 
#     names where . is not a label separator ! 
#
# Author: Olafur Gudmundsson ogud at tislabs.com
# Date:  1999-Sept
#

BEGIN{ 
	tail = substr(".",1,1);
	name = 0;  # name not seen
}

# processing of $ORIGIN directive
/^\$ORIGIN/ {
	olab = split($2,list,"."); 
	if (substr($2,length($2),1) == tail)
		olab--;
}

#
# all new names start at beginning of a line and must start with an
# alpanumeric character or the special two characters @ and *
#
/^[a-zA-Z0-9\*@]/ {
	name = $1;
	if (name == "@")
		lab = olab;  
	else {  # normal name ? 
		lab = split(name,list,".");
		lastc = substr(name,length(name),1);
#		printf "#split %d %s+%s!=%s\n", lab, list[lab-1], lastc,tail;
		if (lastc != tail)  # this is not FQDN  add origin to it
		  lab += olab;
		else 
		  lab--;
		if (substr(name, 1, 1) == "*")  # wildcard name decrement
		  lab--;
	}
#	printf "# found name %s %d\n", name, lab;
}

# now process the SIG records there are following fields on the line
# [name] <TTL> IN SIG  <alg> [<labels>] <OTTL> <expiry> <start> <keyid> <signer> (
# 
/ IN /&&/ SIG /{
	if ((name == 0) && (NF == 11)) { # labels missing assuming no name on line
		$5 = $5  " " lab;
		printf "\t\t\t%s\n", $0;
		next;
	}
	else if((name != 0) && (NF==12)) { # name on line 
		$6 = $6  " " lab;
	}
}

{
	print $0; # print out current line
	name = 0;
}