2 dnl ### NSC -- Library Functions For DNS Processing
3 dnl ### (c) 1997--2019 Martin Mares <mj@ucw.cz>
9 define(`NSCVER', `NSC 5.0')
11 # Current date and time
13 define(`CURRENT_DATE', translit(esyscmd(`date'),`
18 define(MINUTES, `eval($1*60)')
19 define(HOURS, `eval($1*3600)')
20 define(DAYS, `eval($1*86400)')
22 # Since slashes can occur in zone names, we convert them to @'s
24 define(nsc_file_name, `translit($1,/,@)')
26 # Reverse an IP address
28 define(nsc_revIPa, `ifelse($#, 1, `$1', `nsc_revIPa(shift($@)).$1')')
29 define(nsc_revaddr, `nsc_revIPa(translit($1, `.', `,'))')
31 # Fix up dots in a name: If the name is not simple (i.e., it contains at least one unescaped
32 # dot), ensure that it ends with a dot. Then unescape all escaped dots (\.).
34 define(nsc_name, `nsc_unescape_name(ifelse(substr($1,decr(len($1))),.,$1,$1`'ifelse(regexp($1,`[^\\]\.'),-1,,.)))')
35 define(nsc_unescape_name,`patsubst(`$1',\\\.,.)')
37 # Normalize IPv6 address
39 define(nsc_if_v6, `ifelse(index($1,:),-1,`$3',`$2')')
41 define(nsc_norm_v6, `nsc_norm_v6_z(ifelse(regexp($1,`::.*::'),-1,`ifelse(index($1,::),-1,`nsc_norm_v6_nn($1)',`nsc_norm_v6_cc($1)')',`nsc_bad_v6($1)'))')
42 # If there is no ::, check the number of :'s
43 define(nsc_norm_v6_nn, `ifelse(nsc_extract_colons($1),:::::::,$1,`nsc_bad_v6($1)')')
44 # Replace :: by the right number of :'s to get 8 (possibly empty) components
45 define(nsc_norm_v6_cc, `regexp($1,`\(.*\)::\(.*\)',`\1'nsc_n_times(eval(9-len(nsc_extract_colons($1))),:)`\2')')
46 # Delete everything except colons
47 define(nsc_extract_colons, `ifelse(index($1,:),-1,,`:nsc_extract_colons(regexp($1,`\(.*\):\(.*\)',`\1\2'))')')
48 # Repeat a given string N times
49 define(nsc_n_times, `ifelse($1,0,,`$2`'nsc_n_times(eval($1-1),`$2')')')
50 # Pad each component to 4 hex digits and convert them to lowercase
51 define(nsc_norm_v6_z, `nsc_norm_v6_digs(translit($1,:,`,'))')
52 define(nsc_norm_v6_digs, `nsc_norm_v6_dig($1)`'ifelse($#,1,,:`nsc_norm_v6_digs(shift($@))')')
53 define(nsc_norm_v6_dig, `ifelse(eval(len($1) > 4),1,`nsc_bad_v6($1)',`nsc_n_times(eval(4-len($1)),0)`'translit($1,A-F,a-f)')')
54 # Report a fatal error in IPv6 address
55 define(nsc_bad_v6, `nsc_fatal_error(`Invalid IPv6 address: '$1)')
57 # Reverse an IPv6 address or block
59 define(nsc_revaddr6, `substr(nsc_do_revaddr6(nsc_norm_v6($1)),1)')
60 define(nsc_do_revaddr6, `ifelse($1,,,substr($1,0,1),:,`nsc_do_revaddr6(substr($1,1))',`nsc_do_revaddr6(substr($1,2)).substr($1,1,1).substr($1,0,1)')')
61 define(nsc_revblock6, `nsc_do_revblock6(translit($1,/,`,'))')
62 define(nsc_do_revblock6, `substr(nsc_revaddr6($1),dnl
63 ifelse(eval($2%4),0,`eval(64-$2/2)',`nsc_fatal_error(`Prefixes must respect hex digit boundary')'))')
67 define(nsc_itera, `ifelse($1,,,`nsc_iter($1)')`'ifelse($#,1,,`nsc_itera(shift($@))')')
68 define(nsc_iterate, `define(`nsc_iter', defn(`$1'))nsc_itera(shift($@))')
70 # Generate name of reverse domain
72 define(REV, `nsc_if_v6($1,`nsc_revblock6($1).ip6.arpa',`nsc_revaddr($1).in-addr.arpa')')
77 define(`DNSSEC', `define(`USE_DNSSEC',1)$1define(`USE_DNSSEC')')
79 # A for loop macro from m4 doc
82 `pushdef(`$1', `$2')nsc__forloop(`$1', `$2', `$3', `$4')popdef(`$1')')
83 define(`nsc__forloop',
84 `$4`'ifelse($1, `$3', ,
85 `define(`$1', incr($1))nsc__forloop(`$1', `$2', `$3', `$4')')')
89 define(`nsc_fatal_error', `errprint(`NSC error: $1
92 # Default values of parameters
94 define(`NAMED_RESTART_CMD', `rndc reload')
97 define(`VERSDIR', `ver')
99 define(`REFRESH', HOURS(8))
100 define(`RETRY', HOURS(2))
101 define(`EXPIRE', DAYS(14))
102 define(`MINTTL', DAYS(1))
103 define(`NSNAME', translit(esyscmd(`hostname -f'),`
105 define(`MAINTNAME', `root'.`nsc_corr_dot(NSNAME)')
107 define(`KEYGEN_OPTIONS', `-a RSASHA256 -b 1024')
108 define(`SIGNZONE_OPTIONS', `-e +'DAYS(365))
109 define(`DSFROMKEY_OPTIONS', `')
111 # And finally we change comments to semicolons to be compatible with the zone files
115 ; User-defined parts of configuration
117 include(CFDIR/config)