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7e282fb5 | 1 | ;;; -*-lisp-*- |
2 | ;;; | |
7e282fb5 | 3 | ;;; DNS zone generation |
4 | ;;; | |
5 | ;;; (c) 2005 Straylight/Edgeware | |
6 | ;;; | |
7 | ||
8 | ;;;----- Licensing notice --------------------------------------------------- | |
9 | ;;; | |
10 | ;;; This program is free software; you can redistribute it and/or modify | |
11 | ;;; it under the terms of the GNU General Public License as published by | |
12 | ;;; the Free Software Foundation; either version 2 of the License, or | |
13 | ;;; (at your option) any later version. | |
7fff3797 | 14 | ;;; |
7e282fb5 | 15 | ;;; This program is distributed in the hope that it will be useful, |
16 | ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;;; GNU General Public License for more details. | |
7fff3797 | 19 | ;;; |
7e282fb5 | 20 | ;;; You should have received a copy of the GNU General Public License |
21 | ;;; along with this program; if not, write to the Free Software Foundation, | |
22 | ;;; Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
23 | ||
fe5fb85a MW |
24 | ;;;-------------------------------------------------------------------------- |
25 | ;;; Packaging. | |
26 | ||
7e282fb5 | 27 | (defpackage #:zone |
716105aa MW |
28 | (:use #:common-lisp |
29 | #:mdw.base #:mdw.str #:collect #:safely | |
afa2e2f1 | 30 | #:net #:services)) |
fe5fb85a | 31 | |
7e282fb5 | 32 | (in-package #:zone) |
33 | ||
fe5fb85a | 34 | ;;;-------------------------------------------------------------------------- |
fe5fb85a MW |
35 | ;;; Various random utilities. |
36 | ||
37 | (defun to-integer (x) | |
38 | "Convert X to an integer in the most straightforward way." | |
39 | (floor (rational x))) | |
40 | ||
41 | (defun from-mixed-base (base val) | |
42 | "BASE is a list of the ranges for the `digits' of a mixed-base | |
2f1d381d | 43 | representation. Convert VAL, a list of digits, into an integer." |
fe5fb85a MW |
44 | (do ((base base (cdr base)) |
45 | (val (cdr val) (cdr val)) | |
46 | (a (car val) (+ (* a (car base)) (car val)))) | |
47 | ((or (null base) (null val)) a))) | |
48 | ||
49 | (defun to-mixed-base (base val) | |
50 | "BASE is a list of the ranges for the `digits' of a mixed-base | |
2f1d381d | 51 | representation. Convert VAL, an integer, into a list of digits." |
fe5fb85a MW |
52 | (let ((base (reverse base)) |
53 | (a nil)) | |
54 | (loop | |
55 | (unless base | |
56 | (push val a) | |
57 | (return a)) | |
58 | (multiple-value-bind (q r) (floor val (pop base)) | |
59 | (push r a) | |
60 | (setf val q))))) | |
61 | ||
afa2e2f1 | 62 | (export 'timespec-seconds) |
fe5fb85a | 63 | (defun timespec-seconds (ts) |
f38bc59e MW |
64 | "Convert a timespec TS to seconds. |
65 | ||
f4e0c48f | 66 | A timespec may be a real count of seconds, or a list (COUNT UNIT). UNIT |
f38bc59e | 67 | may be any of a number of obvious time units." |
fe5fb85a MW |
68 | (cond ((null ts) 0) |
69 | ((realp ts) (floor ts)) | |
70 | ((atom ts) | |
71 | (error "Unknown timespec format ~A" ts)) | |
72 | ((null (cdr ts)) | |
73 | (timespec-seconds (car ts))) | |
74 | (t (+ (to-integer (* (car ts) | |
75 | (case (intern (string-upcase | |
76 | (stringify (cadr ts))) | |
77 | '#:zone) | |
78 | ((s sec secs second seconds) 1) | |
79 | ((m min mins minute minutes) 60) | |
80 | ((h hr hrs hour hours) #.(* 60 60)) | |
81 | ((d dy dys day days) #.(* 24 60 60)) | |
82 | ((w wk wks week weeks) #.(* 7 24 60 60)) | |
83 | ((y yr yrs year years) #.(* 365 24 60 60)) | |
84 | (t (error "Unknown time unit ~A" | |
85 | (cadr ts)))))) | |
86 | (timespec-seconds (cddr ts)))))) | |
87 | ||
88 | (defun hash-table-keys (ht) | |
89 | "Return a list of the keys in hashtable HT." | |
90 | (collecting () | |
91 | (maphash (lambda (key val) (declare (ignore val)) (collect key)) ht))) | |
92 | ||
93 | (defun iso-date (&optional time &key datep timep (sep #\ )) | |
f38bc59e MW |
94 | "Construct a textual date or time in ISO format. |
95 | ||
96 | The TIME is the universal time to convert, which defaults to now; DATEP is | |
97 | whether to emit the date; TIMEP is whether to emit the time, and | |
98 | SEP (default is space) is how to separate the two." | |
fe5fb85a MW |
99 | (multiple-value-bind |
100 | (sec min hr day mon yr dow dstp tz) | |
101 | (decode-universal-time (if (or (null time) (eq time :now)) | |
102 | (get-universal-time) | |
103 | time)) | |
104 | (declare (ignore dow dstp tz)) | |
105 | (with-output-to-string (s) | |
106 | (when datep | |
107 | (format s "~4,'0D-~2,'0D-~2,'0D" yr mon day) | |
108 | (when timep | |
109 | (write-char sep s))) | |
110 | (when timep | |
111 | (format s "~2,'0D:~2,'0D:~2,'0D" hr min sec))))) | |
112 | ||
fe5fb85a MW |
113 | ;;;-------------------------------------------------------------------------- |
114 | ;;; Zone types. | |
7e282fb5 | 115 | |
afa2e2f1 | 116 | (export 'soa) |
7e282fb5 | 117 | (defstruct (soa (:predicate soap)) |
118 | "Start-of-authority record information." | |
119 | source | |
120 | admin | |
121 | refresh | |
122 | retry | |
123 | expire | |
124 | min-ttl | |
125 | serial) | |
fe5fb85a | 126 | |
afa2e2f1 | 127 | (export 'mx) |
7e282fb5 | 128 | (defstruct (mx (:predicate mxp)) |
129 | "Mail-exchange record information." | |
130 | priority | |
131 | domain) | |
fe5fb85a | 132 | |
afa2e2f1 | 133 | (export 'zone) |
7e282fb5 | 134 | (defstruct (zone (:predicate zonep)) |
135 | "Zone information." | |
136 | soa | |
137 | default-ttl | |
138 | name | |
139 | records) | |
140 | ||
fe5fb85a MW |
141 | ;;;-------------------------------------------------------------------------- |
142 | ;;; Zone defaults. It is intended that scripts override these. | |
143 | ||
afa2e2f1 | 144 | (export '*default-zone-source*) |
7e282fb5 | 145 | (defvar *default-zone-source* |
8e7c1366 | 146 | (let ((hn (gethostname))) |
8a4f9a18 | 147 | (and hn (concatenate 'string (canonify-hostname hn) "."))) |
7e282fb5 | 148 | "The default zone source: the current host's name.") |
fe5fb85a | 149 | |
afa2e2f1 | 150 | (export '*default-zone-refresh*) |
7e282fb5 | 151 | (defvar *default-zone-refresh* (* 24 60 60) |
152 | "Default zone refresh interval: one day.") | |
fe5fb85a | 153 | |
afa2e2f1 | 154 | (export '*default-zone-admin*) |
7e282fb5 | 155 | (defvar *default-zone-admin* nil |
156 | "Default zone administrator's email address.") | |
fe5fb85a | 157 | |
afa2e2f1 | 158 | (export '*default-zone-retry*) |
7e282fb5 | 159 | (defvar *default-zone-retry* (* 60 60) |
160 | "Default znoe retry interval: one hour.") | |
fe5fb85a | 161 | |
afa2e2f1 | 162 | (export '*default-zone-expire*) |
7e282fb5 | 163 | (defvar *default-zone-expire* (* 14 24 60 60) |
164 | "Default zone expiry time: two weeks.") | |
fe5fb85a | 165 | |
afa2e2f1 | 166 | (export '*default-zone-min-ttl*) |
7e282fb5 | 167 | (defvar *default-zone-min-ttl* (* 4 60 60) |
168 | "Default zone minimum TTL/negative TTL: four hours.") | |
fe5fb85a | 169 | |
afa2e2f1 | 170 | (export '*default-zone-ttl*) |
7e282fb5 | 171 | (defvar *default-zone-ttl* (* 8 60 60) |
172 | "Default zone TTL (for records without explicit TTLs): 8 hours.") | |
fe5fb85a | 173 | |
afa2e2f1 | 174 | (export '*default-mx-priority*) |
7e282fb5 | 175 | (defvar *default-mx-priority* 50 |
176 | "Default MX priority.") | |
177 | ||
fe5fb85a | 178 | ;;;-------------------------------------------------------------------------- |
fe5fb85a MW |
179 | ;;; Zone variables and structures. |
180 | ||
7e282fb5 | 181 | (defvar *zones* (make-hash-table :test #'equal) |
182 | "Map of known zones.") | |
fe5fb85a | 183 | |
afa2e2f1 | 184 | (export 'zone-find) |
7e282fb5 | 185 | (defun zone-find (name) |
186 | "Find a zone given its NAME." | |
187 | (gethash (string-downcase (stringify name)) *zones*)) | |
188 | (defun (setf zone-find) (zone name) | |
189 | "Make the zone NAME map to ZONE." | |
190 | (setf (gethash (string-downcase (stringify name)) *zones*) zone)) | |
191 | ||
afa2e2f1 | 192 | (export 'zone-record) |
7e282fb5 | 193 | (defstruct (zone-record (:conc-name zr-)) |
194 | "A zone record." | |
195 | (name '<unnamed>) | |
196 | ttl | |
197 | type | |
590ad961 | 198 | (make-ptr-p nil) |
7e282fb5 | 199 | data) |
200 | ||
afa2e2f1 | 201 | (export 'zone-subdomain) |
7e282fb5 | 202 | (defstruct (zone-subdomain (:conc-name zs-)) |
f4e0c48f MW |
203 | "A subdomain. |
204 | ||
205 | Slightly weird. Used internally by `zone-process-records', and shouldn't | |
206 | escape." | |
7e282fb5 | 207 | name |
208 | ttl | |
209 | records) | |
210 | ||
afa2e2f1 | 211 | (export '*zone-output-path*) |
3d7852d9 MW |
212 | (defvar *zone-output-path* nil |
213 | "Pathname defaults to merge into output files. | |
214 | ||
215 | If this is nil then use the prevailing `*default-pathname-defaults*'. | |
216 | This is not the same as capturing the `*default-pathname-defaults*' from | |
217 | load time.") | |
ab87c7bf | 218 | |
afa2e2f1 | 219 | (export '*preferred-subnets*) |
8ce7eb9b MW |
220 | (defvar *preferred-subnets* nil |
221 | "Subnets to prefer when selecting defaults.") | |
222 | ||
fe5fb85a MW |
223 | ;;;-------------------------------------------------------------------------- |
224 | ;;; Zone infrastructure. | |
225 | ||
ab87c7bf MW |
226 | (defun zone-file-name (zone type) |
227 | "Choose a file name for a given ZONE and TYPE." | |
228 | (merge-pathnames (make-pathname :name (string-downcase zone) | |
229 | :type (string-downcase type)) | |
3d7852d9 | 230 | (or *zone-output-path* *default-pathname-defaults*))) |
ab87c7bf | 231 | |
afa2e2f1 | 232 | (export 'zone-preferred-subnet-p) |
8ce7eb9b MW |
233 | (defun zone-preferred-subnet-p (name) |
234 | "Answer whether NAME (a string or symbol) names a preferred subnet." | |
235 | (member name *preferred-subnets* :test #'string-equal)) | |
236 | ||
afa2e2f1 | 237 | (export 'preferred-subnet-case) |
8bd2576e | 238 | (defmacro preferred-subnet-case (&body clauses) |
f4e0c48f | 239 | "Execute a form based on which networks are considered preferred. |
f38bc59e | 240 | |
f4e0c48f MW |
241 | The CLAUSES have the form (SUBNETS . FORMS) -- evaluate the first FORMS |
242 | whose SUBNETS (a list or single symbol, not evaluated) are listed in | |
243 | `*preferred-subnets*'. If SUBNETS is the symbol `t' then the clause | |
244 | always matches." | |
8bd2576e MW |
245 | `(cond |
246 | ,@(mapcar (lambda (clause) | |
247 | (let ((subnets (car clause))) | |
248 | (cons (cond ((eq subnets t) | |
249 | t) | |
250 | ((listp subnets) | |
251 | `(or ,@(mapcar (lambda (subnet) | |
252 | `(zone-preferred-subnet-p | |
253 | ',subnet)) | |
254 | subnets))) | |
255 | (t | |
256 | `(zone-preferred-subnet-p ',subnets))) | |
257 | (cdr clause)))) | |
258 | clauses))) | |
259 | ||
7e282fb5 | 260 | (defun zone-process-records (rec ttl func) |
f38bc59e MW |
261 | "Sort out the list of records in REC, calling FUNC for each one. |
262 | ||
baad8564 MW |
263 | TTL is the default time-to-live for records which don't specify one. |
264 | ||
f4e0c48f MW |
265 | REC is a list of records of the form |
266 | ||
267 | ({ :ttl TTL | TYPE DATA | (LABEL . REC) }*) | |
268 | ||
269 | The various kinds of entries have the following meanings. | |
270 | ||
271 | :ttl TTL Set the TTL for subsequent records (at this level of | |
272 | nesting only). | |
273 | ||
274 | TYPE DATA Define a record with a particular TYPE and DATA. | |
275 | Record types are defined using `defzoneparse' and | |
276 | the syntax of the data is idiosyncratic. | |
277 | ||
278 | ((LABEL ...) . REC) Define records for labels within the zone. Any | |
279 | records defined within REC will have their domains | |
280 | prefixed by each of the LABELs. A singleton list | |
281 | of labels may instead be written as a single | |
282 | label. Note, therefore, that | |
283 | ||
284 | (host (sub :a \"169.254.1.1\")) | |
baad8564 | 285 | |
f4e0c48f | 286 | defines a record for `host.sub' -- not `sub.host'. |
baad8564 | 287 | |
f4e0c48f MW |
288 | If REC contains no top-level records, but it does define records for a |
289 | label listed in `*preferred-subnets*', then the records for the first such | |
290 | label are also promoted to top-level. | |
baad8564 | 291 | |
f4e0c48f MW |
292 | The FUNC is called for each record encountered, represented as a |
293 | `zone-record' object. Zone parsers are not called: you get the record | |
294 | types and data from the input form; see `zone-parse-records' if you want | |
295 | the raw output." | |
baad8564 | 296 | |
7e282fb5 | 297 | (labels ((sift (rec ttl) |
f4e0c48f MW |
298 | ;; Parse the record list REC into lists of `zone-record' and |
299 | ;; `zone-subdomain' objects, sorting out TTLs and so on. | |
300 | ;; Returns them as two values. | |
301 | ||
7e282fb5 | 302 | (collecting (top sub) |
303 | (loop | |
304 | (unless rec | |
305 | (return)) | |
306 | (let ((r (pop rec))) | |
307 | (cond ((eq r :ttl) | |
308 | (setf ttl (pop rec))) | |
309 | ((symbolp r) | |
310 | (collect (make-zone-record :type r | |
311 | :ttl ttl | |
312 | :data (pop rec)) | |
313 | top)) | |
314 | ((listp r) | |
315 | (dolist (name (listify (car r))) | |
316 | (collect (make-zone-subdomain :name name | |
317 | :ttl ttl | |
318 | :records (cdr r)) | |
319 | sub))) | |
320 | (t | |
321 | (error "Unexpected record form ~A" (car r)))))))) | |
f4e0c48f | 322 | |
4e7e3780 | 323 | (process (rec dom ttl) |
f4e0c48f MW |
324 | ;; Recursirvely process the record list REC, with a list DOM of |
325 | ;; prefix labels, and a default TTL. Promote records for a | |
326 | ;; preferred subnet to toplevel if there are no toplevel records | |
327 | ;; already. | |
328 | ||
7e282fb5 | 329 | (multiple-value-bind (top sub) (sift rec ttl) |
330 | (if (and dom (null top) sub) | |
64e34a97 MW |
331 | (let ((preferred |
332 | (or (find-if (lambda (s) | |
333 | (some #'zone-preferred-subnet-p | |
334 | (listify (zs-name s)))) | |
335 | sub) | |
336 | (car sub)))) | |
8ce7eb9b MW |
337 | (when preferred |
338 | (process (zs-records preferred) | |
339 | dom | |
340 | (zs-ttl preferred)))) | |
341 | (let ((name (and dom | |
342 | (string-downcase | |
343 | (join-strings #\. (reverse dom)))))) | |
344 | (dolist (zr top) | |
345 | (setf (zr-name zr) name) | |
346 | (funcall func zr)))) | |
7e282fb5 | 347 | (dolist (s sub) |
348 | (process (zs-records s) | |
349 | (cons (zs-name s) dom) | |
4e7e3780 | 350 | (zs-ttl s)))))) |
f4e0c48f MW |
351 | |
352 | ;; Process the records we're given with no prefix. | |
4e7e3780 | 353 | (process rec nil ttl))) |
7e282fb5 | 354 | |
afa2e2f1 | 355 | (export 'zone-parse-host) |
7e282fb5 | 356 | (defun zone-parse-host (f zname) |
f4e0c48f MW |
357 | "Parse a host name F. |
358 | ||
359 | If F ends in a dot then it's considered absolute; otherwise it's relative | |
360 | to ZNAME." | |
7e282fb5 | 361 | (setf f (stringify f)) |
362 | (cond ((string= f "@") (stringify zname)) | |
363 | ((and (plusp (length f)) | |
364 | (char= (char f (1- (length f))) #\.)) | |
365 | (string-downcase (subseq f 0 (1- (length f))))) | |
366 | (t (string-downcase (concatenate 'string f "." | |
367 | (stringify zname)))))) | |
7e282fb5 | 368 | (defun default-rev-zone (base bytes) |
fe5fb85a | 369 | "Return the default reverse-zone name for the given BASE address and number |
2f1d381d | 370 | of fixed leading BYTES." |
7e282fb5 | 371 | (join-strings #\. (collecting () |
372 | (loop for i from (- 3 bytes) downto 0 | |
373 | do (collect (ipaddr-byte base i))) | |
374 | (collect "in-addr.arpa")))) | |
375 | ||
376 | (defun zone-name-from-net (net &optional bytes) | |
377 | "Given a NET, and maybe the BYTES to use, convert to the appropriate | |
2f1d381d | 378 | subdomain of in-addr.arpa." |
7e282fb5 | 379 | (let ((ipn (net-get-as-ipnet net))) |
380 | (with-ipnet (net mask) ipn | |
381 | (unless bytes | |
382 | (setf bytes (- 4 (ipnet-changeable-bytes mask)))) | |
383 | (join-strings #\. | |
384 | (append (loop | |
385 | for i from (- 4 bytes) below 4 | |
386 | collect (logand #xff (ash net (* -8 i)))) | |
387 | (list "in-addr.arpa")))))) | |
fe5fb85a | 388 | |
7e282fb5 | 389 | (defun zone-net-from-name (name) |
390 | "Given a NAME in the in-addr.arpa space, convert it to an ipnet." | |
391 | (let* ((name (string-downcase (stringify name))) | |
392 | (len (length name)) | |
393 | (suffix ".in-addr.arpa") | |
394 | (sufflen (length suffix)) | |
395 | (addr 0) | |
396 | (n 0) | |
397 | (end (- len sufflen))) | |
398 | (unless (and (> len sufflen) | |
399 | (string= name suffix :start1 end)) | |
400 | (error "`~A' not in ~A." name suffix)) | |
401 | (loop | |
402 | with start = 0 | |
403 | for dot = (position #\. name :start start :end end) | |
404 | for byte = (parse-integer name | |
405 | :start start | |
406 | :end (or dot end)) | |
407 | do (setf addr (logior addr (ash byte (* 8 n)))) | |
408 | (incf n) | |
409 | when (>= n 4) | |
410 | do (error "Can't deduce network from ~A." name) | |
411 | while dot | |
412 | do (setf start (1+ dot))) | |
413 | (setf addr (ash addr (* 8 (- 4 n)))) | |
414 | (make-ipnet addr (* 8 n)))) | |
415 | ||
7e282fb5 | 416 | (defun zone-parse-net (net name) |
2f1d381d MW |
417 | "Given a NET, and the NAME of a domain to guess from if NET is null, return |
418 | the ipnet for the network." | |
7e282fb5 | 419 | (if net |
420 | (net-get-as-ipnet net) | |
421 | (zone-net-from-name name))) | |
422 | ||
423 | (defun zone-cidr-delg-default-name (ipn bytes) | |
424 | "Given a delegated net IPN and the parent's number of changing BYTES, | |
2f1d381d | 425 | return the default deletate zone prefix." |
7e282fb5 | 426 | (with-ipnet (net mask) ipn |
427 | (join-strings #\. | |
428 | (reverse | |
429 | (loop | |
430 | for i from (1- bytes) downto 0 | |
431 | until (zerop (logand mask (ash #xff (* 8 i)))) | |
432 | collect (logand #xff (ash net (* -8 i)))))))) | |
433 | ||
fe5fb85a | 434 | ;;;-------------------------------------------------------------------------- |
ab87c7bf MW |
435 | ;;; Serial numbering. |
436 | ||
afa2e2f1 | 437 | (export 'make-zone-serial) |
ab87c7bf | 438 | (defun make-zone-serial (name) |
f38bc59e MW |
439 | "Given a zone NAME, come up with a new serial number. |
440 | ||
441 | This will (very carefully) update a file ZONE.serial in the current | |
442 | directory." | |
ab87c7bf MW |
443 | (let* ((file (zone-file-name name :serial)) |
444 | (last (with-open-file (in file | |
445 | :direction :input | |
446 | :if-does-not-exist nil) | |
447 | (if in (read in) | |
448 | (list 0 0 0 0)))) | |
449 | (now (multiple-value-bind | |
450 | (sec min hr dy mon yr dow dstp tz) | |
451 | (get-decoded-time) | |
452 | (declare (ignore sec min hr dow dstp tz)) | |
453 | (list dy mon yr))) | |
454 | (seq (cond ((not (equal now (cdr last))) 0) | |
455 | ((< (car last) 99) (1+ (car last))) | |
456 | (t (error "Run out of sequence numbers for ~A" name))))) | |
457 | (safely-writing (out file) | |
458 | (format out | |
459 | ";; Serial number file for zone ~A~%~ | |
b23c65ee MW |
460 | ;; (LAST-SEQ DAY MONTH YEAR)~%~ |
461 | ~S~%" | |
ab87c7bf MW |
462 | name |
463 | (cons seq now))) | |
464 | (from-mixed-base '(100 100 100) (reverse (cons seq now))))) | |
465 | ||
466 | ;;;-------------------------------------------------------------------------- | |
fe5fb85a | 467 | ;;; Zone form parsing. |
7e282fb5 | 468 | |
469 | (defun zone-parse-head (head) | |
f38bc59e MW |
470 | "Parse the HEAD of a zone form. |
471 | ||
472 | This has the form | |
7e282fb5 | 473 | |
474 | (NAME &key :source :admin :refresh :retry | |
b23c65ee | 475 | :expire :min-ttl :ttl :serial) |
7e282fb5 | 476 | |
2f1d381d MW |
477 | though a singleton NAME needn't be a list. Returns the default TTL and an |
478 | soa structure representing the zone head." | |
7e282fb5 | 479 | (destructuring-bind |
480 | (zname | |
481 | &key | |
8a4f9a18 | 482 | (source *default-zone-source*) |
7e282fb5 | 483 | (admin (or *default-zone-admin* |
484 | (format nil "hostmaster@~A" zname))) | |
485 | (refresh *default-zone-refresh*) | |
486 | (retry *default-zone-retry*) | |
487 | (expire *default-zone-expire*) | |
488 | (min-ttl *default-zone-min-ttl*) | |
489 | (ttl min-ttl) | |
490 | (serial (make-zone-serial zname))) | |
491 | (listify head) | |
492 | (values zname | |
493 | (timespec-seconds ttl) | |
494 | (make-soa :admin admin | |
495 | :source (zone-parse-host source zname) | |
496 | :refresh (timespec-seconds refresh) | |
497 | :retry (timespec-seconds retry) | |
498 | :expire (timespec-seconds expire) | |
499 | :min-ttl (timespec-seconds min-ttl) | |
500 | :serial serial)))) | |
501 | ||
afa2e2f1 | 502 | (export 'zone-make-name) |
5bf80328 | 503 | (defun zone-make-name (prefix zone-name) |
f4e0c48f MW |
504 | "Compute a full domain name from a PREFIX and a ZONE-NAME. |
505 | ||
506 | If the PREFIX ends with `.' then it's absolute already; otherwise, append | |
507 | the ZONE-NAME, separated with a `.'. If PREFIX is nil, or `@', then | |
508 | return the ZONE-NAME only." | |
5bf80328 MW |
509 | (if (or (not prefix) (string= prefix "@")) |
510 | zone-name | |
511 | (let ((len (length prefix))) | |
512 | (if (or (zerop len) (char/= (char prefix (1- len)) #\.)) | |
513 | (join-strings #\. (list prefix zone-name)) | |
514 | prefix)))) | |
515 | ||
afa2e2f1 | 516 | (export 'defzoneparse) |
7e282fb5 | 517 | (defmacro defzoneparse (types (name data list |
5bf80328 | 518 | &key (prefix (gensym "PREFIX")) |
b23c65ee MW |
519 | (zname (gensym "ZNAME")) |
520 | (ttl (gensym "TTL"))) | |
7e282fb5 | 521 | &body body) |
f38bc59e MW |
522 | "Define a new zone record type. |
523 | ||
f4e0c48f MW |
524 | The arguments are as follows: |
525 | ||
526 | TYPES A singleton type symbol, or a list of aliases. | |
fe5fb85a | 527 | |
2f1d381d | 528 | NAME The name of the record to be added. |
fe5fb85a | 529 | |
2f1d381d | 530 | DATA The content of the record to be added (a single object, |
7fff3797 | 531 | unevaluated). |
fe5fb85a | 532 | |
2f1d381d | 533 | LIST A function to add a record to the zone. See below. |
fe5fb85a | 534 | |
5bf80328 MW |
535 | PREFIX The prefix tag used in the original form. |
536 | ||
2f1d381d | 537 | ZNAME The name of the zone being constructed. |
fe5fb85a | 538 | |
2f1d381d | 539 | TTL The TTL for this record. |
fe5fb85a | 540 | |
5bf80328 MW |
541 | You get to choose your own names for these. ZNAME, PREFIX and TTL are |
542 | optional: you don't have to accept them if you're not interested. | |
fe5fb85a | 543 | |
2f1d381d MW |
544 | The LIST argument names a function to be bound in the body to add a new |
545 | low-level record to the zone. It has the prototype | |
fe5fb85a | 546 | |
590ad961 | 547 | (LIST &key :name :type :data :ttl :make-ptr-p) |
fe5fb85a | 548 | |
590ad961 MW |
549 | These (except MAKE-PTR-P, which defaults to nil) default to the above |
550 | arguments (even if you didn't accept the arguments)." | |
7e282fb5 | 551 | (setf types (listify types)) |
552 | (let* ((type (car types)) | |
553 | (func (intern (format nil "ZONE-PARSE/~:@(~A~)" type)))) | |
2ec279f5 | 554 | (with-parsed-body (body decls doc) body |
590ad961 | 555 | (with-gensyms (col tname ttype tttl tdata tmakeptrp i) |
40ded1b8 MW |
556 | `(progn |
557 | (dolist (,i ',types) | |
558 | (setf (get ,i 'zone-parse) ',func)) | |
5bf80328 | 559 | (defun ,func (,prefix ,zname ,data ,ttl ,col) |
40ded1b8 MW |
560 | ,@doc |
561 | ,@decls | |
5bf80328 MW |
562 | (let ((,name (zone-make-name ,prefix ,zname))) |
563 | (flet ((,list (&key ((:name ,tname) ,name) | |
564 | ((:type ,ttype) ,type) | |
565 | ((:data ,tdata) ,data) | |
590ad961 MW |
566 | ((:ttl ,tttl) ,ttl) |
567 | ((:make-ptr-p ,tmakeptrp) nil)) | |
f4decf40 | 568 | #+cmu (declare (optimize ext:inhibit-warnings)) |
5bf80328 MW |
569 | (collect (make-zone-record :name ,tname |
570 | :type ,ttype | |
571 | :data ,tdata | |
590ad961 MW |
572 | :ttl ,tttl |
573 | :make-ptr-p ,tmakeptrp) | |
5bf80328 MW |
574 | ,col))) |
575 | ,@body))) | |
f4e0c48f | 576 | ',type))))) |
7e282fb5 | 577 | |
8fcf1ae3 MW |
578 | (export 'zone-parse-records) |
579 | (defun zone-parse-records (zname ttl records) | |
580 | "Parse a sequence of RECORDS and return a list of raw records. | |
581 | ||
582 | The records are parsed relative to the zone name ZNAME, and using the | |
583 | given default TTL." | |
584 | (collecting (rec) | |
585 | (flet ((parse-record (zr) | |
586 | (let ((func (or (get (zr-type zr) 'zone-parse) | |
587 | (error "No parser for record ~A." | |
588 | (zr-type zr)))) | |
589 | (name (and (zr-name zr) (stringify (zr-name zr))))) | |
590 | (funcall func name zname (zr-data zr) (zr-ttl zr) rec)))) | |
591 | (zone-process-records records ttl #'parse-record)))) | |
7e282fb5 | 592 | |
afa2e2f1 | 593 | (export 'zone-parse) |
7e282fb5 | 594 | (defun zone-parse (zf) |
f38bc59e MW |
595 | "Parse a ZONE form. |
596 | ||
f4e0c48f | 597 | The syntax of a zone form is as follows: |
7e282fb5 | 598 | |
2f1d381d MW |
599 | ZONE-FORM: |
600 | ZONE-HEAD ZONE-RECORD* | |
7e282fb5 | 601 | |
2f1d381d MW |
602 | ZONE-RECORD: |
603 | ((NAME*) ZONE-RECORD*) | |
604 | | SYM ARGS" | |
7e282fb5 | 605 | (multiple-value-bind (zname ttl soa) (zone-parse-head (car zf)) |
8fcf1ae3 MW |
606 | (make-zone :name zname |
607 | :default-ttl ttl | |
608 | :soa soa | |
609 | :records (zone-parse-records zname ttl (cdr zf))))) | |
7e282fb5 | 610 | |
afa2e2f1 | 611 | (export 'zone-create) |
fe5fb85a MW |
612 | (defun zone-create (zf) |
613 | "Zone construction function. Given a zone form ZF, construct the zone and | |
2f1d381d | 614 | add it to the table." |
fe5fb85a MW |
615 | (let* ((zone (zone-parse zf)) |
616 | (name (zone-name zone))) | |
617 | (setf (zone-find name) zone) | |
618 | name)) | |
619 | ||
afa2e2f1 | 620 | (export 'defzone) |
fe5fb85a MW |
621 | (defmacro defzone (soa &rest zf) |
622 | "Zone definition macro." | |
623 | `(zone-create '(,soa ,@zf))) | |
624 | ||
afa2e2f1 | 625 | (export 'defrevzone) |
fe5fb85a MW |
626 | (defmacro defrevzone (head &rest zf) |
627 | "Define a reverse zone, with the correct name." | |
628 | (destructuring-bind | |
629 | (net &rest soa-args) | |
630 | (listify head) | |
631 | (let ((bytes nil)) | |
632 | (when (and soa-args (integerp (car soa-args))) | |
633 | (setf bytes (pop soa-args))) | |
634 | `(zone-create '((,(zone-name-from-net net bytes) ,@soa-args) ,@zf))))) | |
635 | ||
636 | ;;;-------------------------------------------------------------------------- | |
637 | ;;; Zone record parsers. | |
638 | ||
4e7e3780 | 639 | (defzoneparse :a (name data rec) |
7e282fb5 | 640 | ":a IPADDR" |
590ad961 MW |
641 | (rec :data (parse-ipaddr data) :make-ptr-p t)) |
642 | ||
643 | (defzoneparse :svc (name data rec) | |
644 | ":svc IPADDR" | |
645 | (rec :type :a :data (parse-ipaddr data))) | |
fe5fb85a | 646 | |
7e282fb5 | 647 | (defzoneparse :ptr (name data rec :zname zname) |
648 | ":ptr HOST" | |
649 | (rec :data (zone-parse-host data zname))) | |
fe5fb85a | 650 | |
7e282fb5 | 651 | (defzoneparse :cname (name data rec :zname zname) |
652 | ":cname HOST" | |
653 | (rec :data (zone-parse-host data zname))) | |
fe5fb85a | 654 | |
90022a23 MW |
655 | (defzoneparse :txt (name data rec) |
656 | ":txt TEXT" | |
657 | (rec :data data)) | |
658 | ||
f760c73a MW |
659 | (export '*dkim-pathname-defaults*) |
660 | (defvar *dkim-pathname-defaults* | |
661 | (make-pathname :directory '(:relative "keys") | |
662 | :type "dkim")) | |
663 | ||
75f39e1a MW |
664 | (defzoneparse :dkim (name data rec) |
665 | ":dkim (KEYFILE {:TAG VALUE}*)" | |
666 | (destructuring-bind (file &rest plist) (listify data) | |
667 | (let ((things nil) (out nil)) | |
668 | (labels ((flush () | |
669 | (when out | |
670 | (push (get-output-stream-string out) things) | |
671 | (setf out nil))) | |
672 | (emit (text) | |
673 | (let ((len (length text))) | |
674 | (when (and out (> (+ (file-position out) | |
675 | (length text)) | |
676 | 64)) | |
677 | (flush)) | |
678 | (when (plusp len) | |
679 | (cond ((< len 64) | |
680 | (unless out (setf out (make-string-output-stream))) | |
681 | (write-string text out)) | |
682 | (t | |
683 | (do ((i 0 j) | |
684 | (j 64 (+ j 64))) | |
685 | ((>= i len)) | |
686 | (push (subseq text i (min j len)) things)))))))) | |
687 | (do ((p plist (cddr p))) | |
688 | ((endp p)) | |
689 | (emit (format nil "~(~A~)=~A;" (car p) (cadr p)))) | |
690 | (emit (with-output-to-string (out) | |
691 | (write-string "p=" out) | |
692 | (when file | |
f760c73a MW |
693 | (with-open-file |
694 | (in (merge-pathnames file *dkim-pathname-defaults*)) | |
75f39e1a MW |
695 | (loop |
696 | (when (string= (read-line in) | |
697 | "-----BEGIN PUBLIC KEY-----") | |
698 | (return))) | |
699 | (loop | |
700 | (let ((line (read-line in))) | |
701 | (if (string= line "-----END PUBLIC KEY-----") | |
702 | (return) | |
703 | (write-string line out))))))))) | |
704 | (rec :type :txt | |
705 | :data (nreverse things))))) | |
706 | ||
f1d7d492 MW |
707 | (eval-when (:load-toplevel :execute) |
708 | (dolist (item '((sshfp-algorithm rsa 1) | |
709 | (sshfp-algorithm dsa 2) | |
710 | (sshfp-algorithm ecdsa 3) | |
711 | (sshfp-type sha-1 1) | |
712 | (sshfp-type sha-256 2))) | |
713 | (destructuring-bind (prop sym val) item | |
714 | (setf (get sym prop) val) | |
715 | (export sym)))) | |
716 | ||
f760c73a MW |
717 | (export '*sshfp-pathname-defaults*) |
718 | (defvar *sshfp-pathname-defaults* | |
719 | (make-pathname :directory '(:relative "keys") | |
720 | :type "sshfp")) | |
721 | ||
f1d7d492 MW |
722 | (defzoneparse :sshfp (name data rec) |
723 | ":sshfp { FILENAME | ((FPR :alg ALG :type HASH)*) }" | |
724 | (if (stringp data) | |
f760c73a | 725 | (with-open-file (in (merge-pathnames data *sshfp-pathname-defaults*)) |
f1d7d492 MW |
726 | (loop (let ((line (read-line in nil))) |
727 | (unless line (return)) | |
728 | (let ((words (str-split-words line))) | |
729 | (pop words) | |
730 | (when (string= (car words) "IN") (pop words)) | |
731 | (unless (and (string= (car words) "SSHFP") | |
732 | (= (length words) 4)) | |
733 | (error "Invalid SSHFP record.")) | |
734 | (pop words) | |
735 | (destructuring-bind (alg type fpr) words | |
736 | (rec :data (list (parse-integer alg) | |
737 | (parse-integer type) | |
738 | fpr))))))) | |
739 | (flet ((lookup (what prop) | |
740 | (etypecase what | |
741 | (fixnum what) | |
742 | (symbol (or (get what prop) | |
743 | (error "~S is not a known ~A" what prop)))))) | |
48608192 MW |
744 | (dolist (item (listify data)) |
745 | (destructuring-bind (fpr &key (alg 'rsa) (type 'sha-1)) | |
746 | (listify item) | |
747 | (rec :data (list (lookup alg 'sshfp-algorithm) | |
748 | (lookup type 'sshfp-type) | |
749 | fpr))))))) | |
f1d7d492 | 750 | |
7e282fb5 | 751 | (defzoneparse :mx (name data rec :zname zname) |
752 | ":mx ((HOST :prio INT :ip IPADDR)*)" | |
753 | (dolist (mx (listify data)) | |
754 | (destructuring-bind | |
755 | (mxname &key (prio *default-mx-priority*) ip) | |
756 | (listify mx) | |
757 | (let ((host (zone-parse-host mxname zname))) | |
758 | (when ip (rec :name host :type :a :data (parse-ipaddr ip))) | |
759 | (rec :data (cons host prio)))))) | |
fe5fb85a | 760 | |
7e282fb5 | 761 | (defzoneparse :ns (name data rec :zname zname) |
762 | ":ns ((HOST :ip IPADDR)*)" | |
763 | (dolist (ns (listify data)) | |
764 | (destructuring-bind | |
765 | (nsname &key ip) | |
766 | (listify ns) | |
767 | (let ((host (zone-parse-host nsname zname))) | |
768 | (when ip (rec :name host :type :a :data (parse-ipaddr ip))) | |
769 | (rec :data host))))) | |
fe5fb85a | 770 | |
7e282fb5 | 771 | (defzoneparse :alias (name data rec :zname zname) |
772 | ":alias (LABEL*)" | |
773 | (dolist (a (listify data)) | |
774 | (rec :name (zone-parse-host a zname) | |
775 | :type :cname | |
776 | :data name))) | |
fe5fb85a | 777 | |
716105aa MW |
778 | (defzoneparse :srv (name data rec :zname zname) |
779 | ":srv (((SERVICE &key :port) (PROVIDER &key :port :prio :weight :ip)*)*)" | |
780 | (dolist (srv data) | |
781 | (destructuring-bind (servopts &rest providers) srv | |
782 | (destructuring-bind | |
783 | (service &key ((:port default-port)) (protocol :tcp)) | |
784 | (listify servopts) | |
785 | (unless default-port | |
786 | (let ((serv (serv-by-name service protocol))) | |
787 | (setf default-port (and serv (serv-port serv))))) | |
788 | (let ((rname (format nil "~(_~A._~A~).~A" service protocol name))) | |
789 | (dolist (prov providers) | |
790 | (destructuring-bind | |
791 | (srvname | |
792 | &key | |
793 | (port default-port) | |
794 | (prio *default-mx-priority*) | |
795 | (weight 0) | |
796 | ip) | |
797 | (listify prov) | |
798 | (let ((host (zone-parse-host srvname zname))) | |
799 | (when ip (rec :name host :type :a :data (parse-ipaddr ip))) | |
800 | (rec :name rname | |
801 | :data (list prio weight port host)))))))))) | |
802 | ||
a15288b4 | 803 | (defzoneparse :net (name data rec) |
804 | ":net (NETWORK*)" | |
805 | (dolist (net (listify data)) | |
806 | (let ((n (net-get-as-ipnet net))) | |
807 | (rec :name (zone-parse-host "net" name) | |
808 | :type :a | |
809 | :data (ipnet-net n)) | |
810 | (rec :name (zone-parse-host "mask" name) | |
811 | :type :a | |
812 | :data (ipnet-mask n)) | |
098b57a2 | 813 | (rec :name (zone-parse-host "bcast" name) |
a15288b4 | 814 | :type :a |
815 | :data (ipnet-broadcast n))))) | |
7fff3797 | 816 | |
7e282fb5 | 817 | (defzoneparse (:rev :reverse) (name data rec) |
679775ba MW |
818 | ":reverse ((NET :bytes BYTES) ZONE*) |
819 | ||
820 | Add a reverse record each host in the ZONEs (or all zones) that lies | |
821 | within NET. The BYTES give the number of prefix labels generated; this | |
822 | defaults to the smallest number of bytes needed to enumerate the net." | |
7e282fb5 | 823 | (setf data (listify data)) |
cc0fa47a | 824 | (destructuring-bind (net &key bytes) (listify (car data)) |
7e282fb5 | 825 | (setf net (zone-parse-net net name)) |
826 | (unless bytes | |
827 | (setf bytes (ipnet-changeable-bytes (ipnet-mask net)))) | |
4e7e3780 MW |
828 | (let ((seen (make-hash-table :test #'equal))) |
829 | (dolist (z (or (cdr data) | |
830 | (hash-table-keys *zones*))) | |
831 | (dolist (zr (zone-records (zone-find z))) | |
832 | (when (and (eq (zr-type zr) :a) | |
590ad961 | 833 | (zr-make-ptr-p zr) |
4e7e3780 MW |
834 | (ipaddr-networkp (zr-data zr) net)) |
835 | (let ((name (string-downcase | |
836 | (join-strings | |
837 | #\. | |
838 | (collecting () | |
839 | (dotimes (i bytes) | |
840 | (collect (logand #xff (ash (zr-data zr) | |
841 | (* -8 i))))) | |
842 | (collect name)))))) | |
843 | (unless (gethash name seen) | |
844 | (rec :name name :type :ptr | |
845 | :ttl (zr-ttl zr) :data (zr-name zr)) | |
846 | (setf (gethash name seen) t))))))))) | |
7e282fb5 | 847 | |
cc0fa47a | 848 | (defzoneparse (:cidr-delegation :cidr) (name data rec :zname zname) |
679775ba MW |
849 | ":cidr-delegation ((NET :bytes BYTES) ((TARGET-NET*) [TARGET-ZONE])*) |
850 | ||
851 | Insert CNAME records for delegating a portion of the reverse-lookup | |
852 | namespace which doesn't align with an octet boundary. | |
853 | ||
854 | The NET specifies the origin network, in which the reverse records | |
855 | naturally lie. The BYTES are the number of labels to supply for each | |
856 | address; the default is the smallest number which suffices to enumerate | |
857 | the entire NET. The TARGET-NETs are subnets of NET which are to be | |
858 | delegated. The TARGET-ZONEs are the zones to which we are delegating | |
859 | authority for the reverse records: the default is to append labels for those | |
860 | octets of the subnet base address which are not the same in all address in | |
861 | the subnet." | |
cc0fa47a MW |
862 | (setf data (listify data)) |
863 | (destructuring-bind (net &key bytes) (listify (car data)) | |
7e282fb5 | 864 | (setf net (zone-parse-net net name)) |
865 | (unless bytes | |
866 | (setf bytes (ipnet-changeable-bytes (ipnet-mask net)))) | |
cc0fa47a | 867 | (dolist (map (or (cdr data) (list (list net)))) |
4440be0d MW |
868 | (destructuring-bind (tnets &optional tdom) (listify map) |
869 | (dolist (tnet (listify tnets)) | |
870 | (setf tnet (zone-parse-net tnet name)) | |
871 | (unless (ipnet-subnetp net tnet) | |
872 | (error "~A is not a subnet of ~A." | |
873 | (ipnet-pretty tnet) | |
874 | (ipnet-pretty net))) | |
875 | (unless tdom | |
876 | (with-ipnet (net mask) tnet | |
877 | (setf tdom | |
878 | (join-strings | |
879 | #\. | |
880 | (append (reverse (loop | |
881 | for i from (1- bytes) downto 0 | |
882 | until (zerop (logand mask | |
883 | (ash #xff | |
884 | (* 8 i)))) | |
885 | collect (ldb (byte 8 (* i 8)) net))) | |
886 | (list name)))))) | |
887 | (setf tdom (string-downcase (stringify tdom))) | |
888 | (dotimes (i (ipnet-hosts tnet)) | |
889 | (unless (zerop i) | |
890 | (let* ((addr (ipnet-host tnet i)) | |
891 | (tail (join-strings #\. | |
892 | (loop | |
893 | for i from 0 below bytes | |
894 | collect | |
895 | (logand #xff | |
896 | (ash addr (* 8 i))))))) | |
897 | (rec :name (format nil "~A.~A" tail name) | |
898 | :type :cname | |
899 | :data (format nil "~A.~A" tail tdom)))))))))) | |
7e282fb5 | 900 | |
fe5fb85a MW |
901 | ;;;-------------------------------------------------------------------------- |
902 | ;;; Zone file output. | |
7e282fb5 | 903 | |
afa2e2f1 | 904 | (export 'zone-write) |
a567a3bc MW |
905 | (defgeneric zone-write (format zone stream) |
906 | (:documentation "Write ZONE's records to STREAM in the specified FORMAT.")) | |
907 | ||
908 | (defvar *writing-zone* nil | |
909 | "The zone currently being written.") | |
910 | ||
911 | (defvar *zone-output-stream* nil | |
912 | "Stream to write zone data on.") | |
913 | ||
914 | (defmethod zone-write :around (format zone stream) | |
b68068e3 | 915 | (declare (ignore format)) |
a567a3bc MW |
916 | (let ((*writing-zone* zone) |
917 | (*zone-output-stream* stream)) | |
918 | (call-next-method))) | |
919 | ||
afa2e2f1 | 920 | (export 'zone-save) |
a567a3bc MW |
921 | (defun zone-save (zones &key (format :bind)) |
922 | "Write the named ZONES to files. If no zones are given, write all the | |
923 | zones." | |
924 | (unless zones | |
925 | (setf zones (hash-table-keys *zones*))) | |
926 | (safely (safe) | |
927 | (dolist (z zones) | |
928 | (let ((zz (zone-find z))) | |
929 | (unless zz | |
930 | (error "Unknown zone `~A'." z)) | |
931 | (let ((stream (safely-open-output-stream safe | |
932 | (zone-file-name z :zone)))) | |
933 | (zone-write format zz stream)))))) | |
934 | ||
935 | ;;;-------------------------------------------------------------------------- | |
936 | ;;; Bind format output. | |
937 | ||
afa2e2f1 | 938 | (export 'bind-hostname) |
a567a3bc MW |
939 | (defun bind-hostname (hostname) |
940 | (if (not hostname) | |
941 | "@" | |
942 | (let* ((h (string-downcase (stringify hostname))) | |
943 | (hl (length h)) | |
944 | (r (string-downcase (zone-name *writing-zone*))) | |
945 | (rl (length r))) | |
946 | (cond ((string= r h) "@") | |
947 | ((and (> hl rl) | |
948 | (char= (char h (- hl rl 1)) #\.) | |
949 | (string= h r :start1 (- hl rl))) | |
950 | (subseq h 0 (- hl rl 1))) | |
951 | (t (concatenate 'string h ".")))))) | |
952 | ||
953 | (defmethod zone-write ((format (eql :bind)) zone stream) | |
954 | (format stream "~ | |
7e282fb5 | 955 | ;;; Zone file `~(~A~)' |
956 | ;;; (generated ~A) | |
957 | ||
7d593efd MW |
958 | $ORIGIN ~0@*~(~A.~) |
959 | $TTL ~2@*~D~2%" | |
7e282fb5 | 960 | (zone-name zone) |
961 | (iso-date :now :datep t :timep t) | |
962 | (zone-default-ttl zone)) | |
a567a3bc MW |
963 | (let* ((soa (zone-soa zone)) |
964 | (admin (let* ((name (soa-admin soa)) | |
965 | (at (position #\@ name)) | |
966 | (copy (format nil "~(~A~)." name))) | |
967 | (when at | |
968 | (setf (char copy at) #\.)) | |
969 | copy))) | |
7e282fb5 | 970 | (format stream "~ |
971 | ~A~30TIN SOA~40T~A ~A ( | |
972 | ~45T~10D~60T ;serial | |
973 | ~45T~10D~60T ;refresh | |
974 | ~45T~10D~60T ;retry | |
975 | ~45T~10D~60T ;expire | |
976 | ~45T~10D )~60T ;min-ttl~2%" | |
a567a3bc MW |
977 | (bind-hostname (zone-name zone)) |
978 | (bind-hostname (soa-source soa)) | |
979 | admin | |
7e282fb5 | 980 | (soa-serial soa) |
981 | (soa-refresh soa) | |
982 | (soa-retry soa) | |
983 | (soa-expire soa) | |
984 | (soa-min-ttl soa))) | |
a567a3bc MW |
985 | (dolist (zr (zone-records zone)) |
986 | (bind-record (zr-type zr) zr))) | |
987 | ||
afa2e2f1 | 988 | (export 'bind-record) |
a567a3bc MW |
989 | (defgeneric bind-record (type zr)) |
990 | ||
afa2e2f1 | 991 | (export 'bind-format-record) |
a567a3bc MW |
992 | (defun bind-format-record (name ttl type format args) |
993 | (format *zone-output-stream* | |
994 | "~A~20T~@[~8D~]~30TIN ~A~40T~?~%" | |
995 | (bind-hostname name) | |
996 | (and (/= ttl (zone-default-ttl *writing-zone*)) | |
997 | ttl) | |
998 | (string-upcase (symbol-name type)) | |
999 | format args)) | |
1000 | ||
1001 | (defmethod bind-record (type zr) | |
1002 | (destructuring-bind (format &rest args) | |
1003 | (bind-record-format-args type (zr-data zr)) | |
1004 | (bind-format-record (zr-name zr) | |
1005 | (zr-ttl zr) | |
1006 | (bind-record-type type) | |
1007 | format args))) | |
1008 | ||
afa2e2f1 | 1009 | (export 'bind-record-type) |
a567a3bc MW |
1010 | (defgeneric bind-record-type (type) |
1011 | (:method (type) type)) | |
1012 | ||
afa2e2f1 | 1013 | (export 'bind-record-format-args) |
a567a3bc MW |
1014 | (defgeneric bind-record-format-args (type data) |
1015 | (:method ((type (eql :a)) data) (list "~A" (ipaddr-string data))) | |
1016 | (:method ((type (eql :ptr)) data) (list "~A" (bind-hostname data))) | |
1017 | (:method ((type (eql :cname)) data) (list "~A" (bind-hostname data))) | |
1018 | (:method ((type (eql :ns)) data) (list "~A" (bind-hostname data))) | |
1019 | (:method ((type (eql :mx)) data) | |
1020 | (list "~2D ~A" (cdr data) (bind-hostname (car data)))) | |
716105aa MW |
1021 | (:method ((type (eql :srv)) data) |
1022 | (destructuring-bind (prio weight port host) data | |
1023 | (list "~2D ~5D ~5D ~A" prio weight port (bind-hostname host)))) | |
f1d7d492 MW |
1024 | (:method ((type (eql :sshfp)) data) |
1025 | (cons "~2D ~2D ~A" data)) | |
9d1d9739 MW |
1026 | (:method ((type (eql :txt)) data) |
1027 | (cons "~#[\"\"~;~S~:;(~@{~%~8T~S~} )~]" | |
1028 | (mapcar #'stringify (listify data))))) | |
7e282fb5 | 1029 | |
1030 | ;;;----- That's all, folks -------------------------------------------------- |