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1 | #! /usr/bin/tclsh8.5 |
2 | ### -*-tcl-*- | |
3 | ### | |
4 | ### Generate `named.conf' stanze for multiple views. | |
5 | ### | |
6 | ### (c) 2011 Mark Wooding | |
7 | ### | |
8 | ||
9 | ###----- Licensing notice --------------------------------------------------- | |
10 | ### | |
11 | ### This program is free software; you can redistribute it and/or modify | |
12 | ### it under the terms of the GNU General Public License as published by | |
13 | ### the Free Software Foundation; either version 2 of the License, or | |
14 | ### (at your option) any later version. | |
15 | ### | |
16 | ### This program is distributed in the hope that it will be useful, | |
17 | ### but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ### GNU General Public License for more details. | |
20 | ### | |
21 | ### You should have received a copy of the GNU General Public License | |
22 | ### along with this program; if not, write to the Free Software Foundation, | |
23 | ### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
24 | ||
25 | ###-------------------------------------------------------------------------- | |
26 | ### Utility functions. | |
27 | ||
28 | proc pushnew {var args} { | |
29 | ## Append each of the ARGS onto the list VAR if they're not there already. | |
30 | ||
31 | upvar 1 $var list | |
32 | foreach item $list { set found($item) t } | |
33 | foreach item $args { | |
34 | if {![info exists found($item)]} { | |
35 | lappend list $item | |
36 | set found($item) t | |
37 | } | |
38 | } | |
39 | } | |
40 | ||
41 | proc merge-lists {lists} { | |
42 | ## Merge the given LISTS into a single list, respecting the order of the | |
43 | ## items in the original list. If that's not possible, signal an error. | |
44 | ## Any ambiguity is resolved by choosing the item from the earlier list. | |
45 | ||
46 | ## Strip out any empty lists in the input. | |
47 | set nlists {} | |
48 | foreach list $lists { | |
49 | if {[llength $list]} { lappend nlists $list } | |
50 | } | |
51 | set lists $nlists | |
52 | ||
53 | ## Clear the output list. | |
54 | set output {} | |
55 | ||
56 | ## Now pick out items one by one. | |
57 | while {[llength $lists]} { | |
58 | ||
59 | ## Find the candidate items | |
60 | set cand {} | |
61 | foreach list $lists { pushnew cand [lindex $list 0] } | |
62 | ||
2042733d | 63 | ## Remove candidate items which are not first in some other list. |
2a65b7cf MW |
64 | set ncand {} |
65 | foreach cand $cand { | |
66 | foreach list $lists { | |
2042733d | 67 | if {[lsearch -exact $list $cand] <= 0} { lappend ncand $cand } |
2a65b7cf MW |
68 | } |
69 | } | |
2042733d | 70 | set cand $ncand |
2a65b7cf MW |
71 | |
72 | ## If there's nothing left, report an error. | |
73 | if {![llength $cand]} { | |
74 | error "Inconsistent lists in `merge-lists'." | |
75 | } | |
76 | ||
77 | ## Otherwise take the first item. | |
78 | set chosen [lindex $cand 0] | |
79 | lappend output $chosen | |
80 | ||
81 | ## Remove the chosen item from the input lists. | |
82 | set nlists {} | |
83 | foreach list $lists { | |
84 | if {[string equal $chosen [lindex $list 0]]} { | |
85 | set list [lrange $list 1 end] | |
86 | if {![llength $list]} { continue } | |
87 | } | |
88 | lappend nlists $list | |
89 | } | |
90 | set lists $nlists | |
91 | } | |
92 | ||
93 | return $output | |
94 | } | |
95 | ||
96 | proc adjust-uplevel {spec offset} { | |
97 | ## Adjust an `uplevel' SPEC by OFFSET to take account of intervening call | |
98 | ## frames. If SPEC begins with `#' then it is left alone; otherwise it is | |
99 | ## incremented by OFFSET. | |
100 | ||
101 | switch -glob -- $spec { | |
102 | \#* { return $spec } | |
103 | default { return [expr {$spec + $offset}] } | |
104 | } | |
105 | } | |
106 | ||
107 | proc unwind-protect {body cleanup} { | |
108 | ## Evaluate BODY; then evaluate CLEANUP, regardless of whether BODY | |
109 | ## returned normally or did something complicated. If CLEANUP completes | |
110 | ## normally then the final result is that of BODY (including any errors or | |
111 | ## abnormal returns it made); otherwise the result of CLEANUP takes | |
112 | ## precedence and the results of BODY are discarded. | |
113 | ||
114 | catch { uplevel 1 $body } bodyval bodyopts | |
115 | if {[catch { uplevel 1 $cleanup } cleanval cleanopts]} { | |
116 | return -options $cleanopts $cleanval | |
117 | } else { | |
118 | return -options $bodyopts $bodyval | |
119 | } | |
120 | } | |
121 | ||
122 | proc let {args} { | |
123 | ## Syntax: let VAR VALUE ... BODY | |
124 | ## | |
125 | ## Evaluate BODY with the VARs bound to the VALUEs. Reestore the previous | |
126 | ## values when the BODY returns. | |
127 | ||
128 | ## Parse the argument syntax. | |
129 | if {[llength $args] % 2 == 0} { | |
130 | error "bad number of arguments to `let'" | |
131 | } | |
132 | set body [lindex $args end] | |
133 | ||
134 | ## Now work through the bindings, setting the variables to their new | |
135 | ## values. As we go, also build up code in `cleanup' to restore everything | |
136 | ## the way it's meant to be. | |
137 | set cleanup {} | |
138 | set i 0 | |
139 | foreach {var value} [lrange $args 0 end-1] { | |
140 | upvar 1 $var fluid-$i | |
141 | if {[info exists fluid-$i]} { | |
142 | append cleanup "set fluid-$i [list [set fluid-$i]]\n" | |
143 | } else { | |
144 | append cleanup "unset fluid-$i\n" | |
145 | } | |
146 | set fluid-$i $value | |
147 | incr i | |
148 | } | |
149 | ||
150 | ## Now evaluate the body. | |
151 | unwind-protect { uplevel 1 $body } $cleanup | |
152 | } | |
153 | ||
154 | proc set* {names values} { | |
155 | ## Set each of the variables listed in NAMES to the corresponding element | |
156 | ## of VALUES. The two lists must have the same length. | |
157 | ||
158 | if {[llength $names] != [llength $values]} { | |
159 | error "length mismatch" | |
160 | } | |
161 | foreach name $names value $values { | |
162 | upvar 1 $name var | |
163 | set var $value | |
164 | } | |
165 | } | |
166 | ||
167 | ###-------------------------------------------------------------------------- | |
168 | ### Configuration spaces. | |
169 | ### | |
170 | ### A configuration space is essentially a collection of Tcl commands and a | |
171 | ### global array which the commands act on. The commands live in their own | |
172 | ### namespace and their availability can be altered by modifying the | |
173 | ### namespace path. The basic idea is to support a structured configuration | |
174 | ### language with short directive names and where the available directives | |
175 | ### varies in a context-sensitive manner. | |
176 | ### | |
177 | ### A configuration space can include other spaces, and they can include | |
178 | ### further spaces. The graph of inclusions must be acyclic; further, since | |
179 | ### the available commands are determined using the C3 linearization | |
180 | ### algorithm, the relation in which a space precedes the spaces it includes, | |
181 | ### and a space A precedes another space B if a third space includes A before | |
182 | ### B, must be a partial order, and the linearizations of all of the spaces | |
183 | ### must be monotonic. Don't worry about that if you don't know what it | |
184 | ### means. If you don't do anything weird, it'll probably be all right. | |
185 | ||
186 | proc confspc-create {space confvar} { | |
187 | ## Define a new configuration space called SPACE. You must do this before | |
188 | ## defining directives or including other spaces. | |
189 | ||
190 | global CONFSPC_CMD CONFSPC_INCL CONFSPC_CPL CONFSPC_CHANGE CONFSPC_VAR | |
191 | if {![info exists CONFSPC_CMD($space)]} { | |
192 | set CONFSPC_CMD($space) {} | |
193 | set CONFSPC_INCL($space) {} | |
194 | set CONFSPC_CPL($space) [list $space] | |
195 | set CONFSPC_CHANGE($space) 0 | |
196 | set CONFSPC_VAR($space) $confvar | |
197 | namespace eval ::confspc::$space {} | |
198 | } | |
199 | } | |
200 | ||
201 | ## Change sequence numbers are used to decide whether the linearized | |
202 | ## inclusion caches are up to date. | |
203 | set CONFSPC_LASTCHANGESEQ 0 | |
204 | set CONFSPC_CHANGESEQ 0 | |
205 | ||
206 | proc confspc-command {space name bvl body} { | |
207 | ## Define a configuration directive NAME in SPACE, accepting the arguments | |
208 | ## specified by the BVL, and executing BODY when invoked. The SPACE's | |
209 | ## configuration array is available within the BODY. | |
210 | ||
211 | global CONFSPC_CMD CONFSPC_VAR | |
212 | pushnew CONFSPC_CMD($space) $name | |
213 | ||
214 | ## Define the configuration command in the caller's namespace. | |
215 | set ns [uplevel 1 { namespace current }] | |
216 | eval [list proc ${ns}::conf/$space/$name $bvl \ | |
217 | "global $CONFSPC_VAR($space)\n$body"] | |
218 | namespace eval $ns [list namespace export conf/$space/$name] | |
219 | ||
220 | ## Now arrange for this command to exist properly in the configuration | |
221 | ## space. | |
222 | namespace eval ::confspc::$space \ | |
223 | [list namespace import ${ns}::conf/$space/$name] | |
224 | catch { | |
225 | namespace eval ::confspc::$space [list rename $name {}] | |
226 | } | |
227 | namespace eval ::confspc::$space \ | |
228 | [list rename conf/$space/$name $name] | |
229 | } | |
230 | ||
231 | proc confspc-include {space includes} { | |
232 | ## Arrange for SPACE to include the directives from the INCLUDES spaces. | |
233 | ||
234 | global CONFSPC_INCL CONFSPC_LASTCHANGESEQ CONFSPC_CHANGESEQ | |
235 | pushnew CONFSPC_INCL($space) $includes | |
236 | if {$CONFSPC_CHANGESEQ <= $CONFSPC_LASTCHANGESEQ} { | |
237 | set CONFSPC_CHANGESEQ [expr {$CONFSPC_LASTCHANGESEQ + 1}] | |
238 | } | |
239 | } | |
240 | ||
241 | proc confspc-update {space} { | |
242 | ## Update cached data for SPACE and its included spaces. We recompute the | |
243 | ## space's class-precedence list, for which we use the C3 linearization | |
244 | ## algorithm, which has known good properties. | |
245 | ||
246 | global CONFSPC_CPL CONFSPC_CHANGE CONFSPC_INCL | |
247 | global CONFSPC_CHANGESEQ CONFSPC_LASTCHANGESEQ | |
248 | set CONFSPC_LASTCHANGESEQ $CONFSPC_CHANGESEQ | |
249 | ||
250 | ## If the space is already up-to-date, do nothing. | |
251 | if {$CONFSPC_CHANGE($space) == $CONFSPC_CHANGESEQ} { return } | |
252 | ||
253 | ## Arrange for the included spaces to be up-to-date, and gather the CPLs | |
254 | ## together so we can merge them. | |
255 | set merge {} | |
256 | lappend merge [concat $space $CONFSPC_INCL($space)] | |
257 | foreach included $CONFSPC_INCL($space) { | |
258 | confspc-update $included | |
259 | lappend merge $CONFSPC_CPL($included) | |
260 | } | |
261 | ||
262 | ## Do the merge and update the change indicator. | |
263 | set CONFSPC_CPL($space) [merge-lists $merge] | |
264 | set CONFSPC_CHANGE($space) $CONFSPC_CHANGESEQ | |
265 | } | |
266 | ||
267 | proc confspc-path {ns cpl} { | |
268 | ## Update namespace NS's command path so that it has (only) the | |
269 | ## directives of the given CPL. Pass an empty CPL to clear the | |
270 | ## configuration space hacking. | |
271 | ||
272 | set path {} | |
273 | ||
274 | ## Add the new namespaces to the front. | |
275 | foreach spc $cpl { lappend path ::confspc::$spc } | |
276 | ||
277 | ## Now add the existing path items, with any existing confspc hacking | |
278 | ## stripped out. | |
279 | foreach item [namespace eval $ns { namespace path }] { | |
280 | if {![string match "::confspc::*" $item]} { lappend npath $item } | |
281 | } | |
282 | ||
283 | ## Commit the result. | |
284 | namespace eval $ns [list namespace path $path] | |
285 | } | |
286 | ||
287 | proc confspc-set {ns space} { | |
288 | ## Set the command path for namespace NS to include the configuration | |
289 | ## directives of SPACE (and its included spaces). | |
290 | ||
291 | global CONFSPC_CPL | |
292 | confspc-update $space | |
293 | confspc-path $ns $CONFSPC_CPL($space) | |
294 | } | |
295 | ||
296 | proc confspc-eval {space body} { | |
297 | ## Evaluate BODY in the current namespace, but augmented with the | |
298 | ## directives from the named SPACE. The command path of the current | |
299 | ## namespace is restored afterwards. | |
300 | ||
301 | set ns [uplevel 1 { namespace current }] | |
302 | set path [namespace eval $ns { namespace path }] | |
303 | unwind-protect { | |
304 | confspc-set $ns $space | |
305 | uplevel 1 $body | |
306 | } { | |
307 | namespace eval $ns [list namespace path $path] | |
308 | } | |
309 | } | |
310 | ||
311 | proc preserving-config {confvar body} { | |
312 | ## Evaluate BODY, but on exit restore the CONFVAR array so that the BODY | |
313 | ## has no lasting effect on it. | |
314 | ||
63ba7a29 | 315 | upvar #0 $confvar CONFIG |
2a65b7cf MW |
316 | set old [array get CONFIG] |
317 | unwind-protect { | |
318 | uplevel 1 $body | |
319 | } { | |
320 | array unset CONFIG | |
321 | array set CONFIG $old | |
322 | } | |
323 | } | |
324 | ||
325 | confspc-create confspc CONFSPC_CONFIG | |
326 | ||
327 | confspc-command confspc include {args} { | |
328 | ## Include the named configuration spaces in the current one. | |
329 | ||
330 | confspc-include $CONFSPC_CONFIG(space) $args | |
331 | } | |
332 | ||
333 | confspc-command confspc define {name bvl body} { | |
334 | ## Define a directive NAME in the current space, taking arguments BVL, and | |
335 | ## having the given BODY. | |
336 | ||
337 | confspc-command $CONFSPC_CONFIG(space) $name $bvl $body | |
338 | } | |
339 | ||
340 | confspc-command confspc define-simple {setting default} { | |
341 | ## Define a directive SETTING which sets the appropriately prefixed entry | |
342 | ## in the CONFIG array to its single arguments, and immediately set the | |
343 | ## CONFIG entry to DEFAULT. | |
344 | ||
345 | global CONFSPC_VAR | |
346 | set space $CONFSPC_CONFIG(space) | |
347 | upvar #0 $CONFSPC_VAR($space) config | |
348 | confspc-command $space $setting arg \ | |
349 | "set $CONFSPC_VAR($space)($CONFSPC_CONFIG(prefix)$setting) \$arg" | |
350 | set config($CONFSPC_CONFIG(prefix)$setting) $default | |
351 | } | |
352 | ||
353 | confspc-command confspc define-list {setting default} { | |
354 | ## Define a directive SETTING which sets the appropriately prefixed entry | |
355 | ## in the CONFIG array to its entire argument list, and immediately set the | |
356 | ## CONFIG entry to DEFAULT (which should be a Tcl list, not a collection of | |
357 | ## arguments). | |
358 | ||
359 | global CONFSPC_VAR | |
360 | set space $CONFSPC_CONFIG(space) | |
361 | upvar #0 $CONFSPC_VAR($space) config | |
362 | confspc-command $space $setting args \ | |
363 | "set $CONFSPC_VAR($space)($CONFSPC_CONFIG(prefix)$setting) \$args" | |
364 | set config($CONFSPC_CONFIG(prefix)$setting) $default | |
365 | } | |
366 | ||
367 | confspc-command confspc prefix {prefix} { | |
368 | set CONFSPC_CONFIG(prefix) $prefix | |
369 | } | |
370 | ||
371 | proc define-configuration-space {space confvar body} { | |
372 | ## Define a new configuration space named SPACE. The BODY is Tcl code, | |
373 | ## though it may make use of `include' and `define'. | |
374 | ||
375 | global CONFSPC_CONFIG | |
376 | set ns [uplevel 1 { namespace current }] | |
377 | set oldpath [namespace eval $ns { namespace path }] | |
378 | confspc-create $space $confvar | |
379 | unwind-protect { | |
380 | preserving-config CONFSPC_CONFIG { | |
381 | array set CONFSPC_CONFIG [list space $space \ | |
382 | prefix ""] | |
383 | confspc-set $ns confspc | |
384 | uplevel 1 $body | |
385 | } | |
386 | } { | |
387 | namespace eval $ns [list namespace path $oldpath] | |
388 | } | |
389 | } | |
390 | ||
391 | ###-------------------------------------------------------------------------- | |
392 | ### Option parsing. | |
393 | ### | |
394 | ### The option parsing machinery makes extensive use of a state array | |
395 | ### OPTPARSE_STATE in order to maintain its context. The procedure | |
396 | ### `with-option-parser' establishes this array correctly, and preserves any | |
397 | ### existing state, so there should be no trouble with multiple parsers in | |
398 | ### the same program. | |
399 | ||
400 | proc optparse-more-p {} { | |
401 | ## Answer whether there are more argument words available. | |
402 | ||
403 | upvar #0 OPTPARSE_STATE state | |
404 | if {[llength $state(words)]} { return true } else { return false } | |
405 | } | |
406 | ||
407 | proc optparse-next-word {} { | |
408 | ## Return the next word in the argument list. It is an error if there are | |
409 | ## no more words left. | |
410 | ||
411 | upvar #0 OPTPARSE_STATE state | |
412 | set word [lindex $state(words) 0] | |
413 | set state(words) [lrange $state(words) 1 end] | |
414 | return $word | |
415 | } | |
416 | ||
417 | proc optparse-error {message} { | |
418 | ## Report an error message and exit. | |
419 | ||
420 | global QUIS | |
421 | puts stderr "$QUIS: $message" | |
422 | exit 1 | |
423 | } | |
424 | ||
425 | proc optparse-option/short {var} { | |
426 | ## Parse the next short option from the current cluster. If there are no | |
427 | ## more short options, set the mode back to `free' and call back into | |
428 | ## `optparse-option/free'. | |
429 | ## | |
430 | ## See the description of `optparse-option/free' for the interface | |
431 | ## implemented by this procedure. | |
432 | ||
433 | ## Get hold of my state and the caller's array. | |
434 | upvar #0 OPTPARSE_STATE state | |
435 | upvar 1 $var opt | |
436 | ||
437 | ## Work out what to do based on the remaining length of the cluster. (The | |
438 | ## cluster shouldn't be empty because the mode should only be set to | |
439 | ## `short' if there is an initial nonempty cluster to parse, and we set it | |
440 | ## back to `free' when we consume the final character from the cluster.) | |
441 | ## Specifically, set `argp' according to whether we have a potential | |
442 | ## argument in the cluster, and `name' to the option character extracted. | |
443 | array unset opt | |
444 | switch [string length $state(rest)] { | |
445 | 0 { | |
446 | error "empty cluster" | |
447 | } | |
448 | 1 { | |
449 | set argp false | |
450 | set state(mode) free | |
451 | set name $state(rest) | |
452 | } | |
453 | default { | |
454 | set argp true | |
455 | set name [string index $state(rest) 0] | |
456 | set state(rest) [string range $state(rest) 1 end] | |
457 | } | |
458 | } | |
459 | ||
460 | ## Try to look up the option in the map. | |
461 | if {![dict exists $state(short-map) $name]} { | |
462 | optparse-error "Unknown option `$state(prefix)$name'" | |
463 | } | |
464 | array set opt [dict get $state(short-map) $name] | |
465 | set state(name) $name | |
466 | ||
467 | ## Collect an argument if one is required. | |
468 | catch { unset state(arg) } | |
469 | switch -glob -- "$opt(arg),$argp" { | |
470 | "required,false" { | |
471 | if {![optparse-more-p]} { | |
472 | optparse-error "Option `$state(prefix)$name' requires an argument" | |
473 | } | |
474 | set state(arg) [optparse-next-word] | |
475 | } | |
476 | "required,true" - "optional,true" { | |
477 | set state(arg) $state(rest) | |
478 | set state(mode) free | |
479 | } | |
480 | } | |
481 | ||
482 | ## Report success. | |
483 | return 1 | |
484 | } | |
485 | ||
486 | proc optparse-option/free {var} { | |
487 | ## Parse the next option from the argument list. This procedure is called | |
488 | ## to process a new argument word, i.e., we are in `free' mode. It | |
489 | ## analyses the next argument word and either processes it internally or | |
490 | ## sets the mode appropriately and calls a specialized handler | |
491 | ## `optparse-option/MODE' for that mode. | |
492 | ## | |
493 | ## The interface works as follows. If an option was found, then the array | |
494 | ## VAR is set according to the option's settings dictionary; and state | |
495 | ## variables are set as follows. | |
496 | ## | |
497 | ## prefix The prefix character(s) to write before the option name in | |
498 | ## messages, e.g., `--' for long options. | |
499 | ## | |
500 | ## name The option name without any prefix attached. | |
501 | ## | |
502 | ## arg The option's argument, if there is one; otherwise unset. | |
503 | ||
504 | upvar #0 OPTPARSE_STATE state | |
505 | upvar 1 $var opt | |
506 | ||
507 | ## Set stuff up. | |
508 | array unset opt | |
509 | catch { unset state(arg) } | |
510 | if {![optparse-more-p]} { return 0 } | |
511 | set word [optparse-next-word] | |
512 | ||
513 | ## Work out what to do based on the word. The order of these tests is | |
514 | ## critically important. | |
515 | switch -glob -- $word { | |
516 | ||
517 | "--" { | |
518 | ## End-of-options marker. | |
519 | ||
520 | return 0 | |
521 | } | |
522 | ||
523 | "--*" { | |
524 | ## Long option. | |
525 | ||
526 | set state(prefix) "--" | |
527 | ||
528 | ## If there's an equals sign, the name is the bit to the left; keep the | |
529 | ## remainder as an argument. | |
530 | set eq [string first "=" $word 2] | |
531 | if {$eq >= 0} { | |
532 | set name [string range $word 2 [expr {$eq - 1}]] | |
533 | set state(arg) [string range $word [expr {$eq + 1}] end] | |
534 | set argp true | |
535 | } else { | |
536 | set name [string range $word 2 end] | |
537 | set argp false | |
538 | } | |
539 | set state(name) name | |
540 | ||
541 | ## Look the name up in the map. | |
542 | if {[dict exists $state(long-map) $name]} { | |
543 | array set opt [dict get $state(long-map) $name] | |
544 | } else { | |
545 | set matches [dict keys $state(long-map) "$name*"] | |
546 | switch -exact -- [llength $matches] { | |
547 | 1 { array set opt [dict get $state(long-map) [lindex $matches 0]] } | |
548 | 0 { optparse-error "Unknown option `--$name'" } | |
549 | default { | |
550 | optparse-error "Ambiaguous option `--$name' \ | |
551 | (matches: --[join $matches {, --}])" | |
552 | } | |
553 | } | |
554 | } | |
555 | ||
556 | ## Now check whether we want an argument. The missing cases are | |
557 | ## because we are already in the correct state. | |
558 | switch -glob -- "$opt(arg),$argp" { | |
559 | "none,true" { | |
560 | optparse-error "Option `$name' doesn't accept an argument" | |
561 | } | |
562 | "required,false" { | |
563 | if {![optparse-more-p]} { | |
564 | optparse-error "Option `$name' requires an argument" | |
565 | } | |
566 | set state(arg) [optparse-next-word] | |
567 | } | |
568 | } | |
569 | ||
570 | ## Done. We consumed either one or two entire argument words, so we | |
571 | ## should remain in the `free' state. | |
572 | return 1 | |
573 | } | |
574 | ||
575 | "-?*" { | |
576 | ## Short option. Set state, initialize the cluster, and go. | |
577 | ||
578 | set state(rest) [string range $word 1 end] | |
579 | set state(mode) short | |
580 | set state(prefix) "-" | |
581 | return [optparse-option/short opt] | |
582 | } | |
583 | ||
584 | default { | |
585 | ## Some non-option thing. Under POSIX rules, this ends the parse. (We | |
586 | ## could do something more adventurous later.) | |
587 | ||
588 | set state(words) [concat [list $word] $state(words)] | |
589 | return 0 | |
590 | } | |
591 | } | |
592 | } | |
593 | ||
594 | proc optparse-arg-p {} { | |
595 | ## Return the whether the most recently processed option had an argument. | |
596 | ||
597 | upvar #0 OPTPARSE_STATE state | |
598 | return [info exists state(arg)] | |
599 | } | |
600 | ||
601 | proc optparse-arg {} { | |
602 | ## Return the argument from the most recently processed option. It is an | |
603 | ## error if no argument was supplied. | |
604 | ||
605 | upvar #0 OPTPARSE_STATE state | |
606 | return $state(arg) | |
607 | } | |
608 | ||
609 | proc optparse-words {} { | |
610 | ## Return the remaining unparsed argument words as a list. | |
611 | ||
612 | upvar #0 OPTPARSE_STATE state | |
613 | return $state(words) | |
614 | } | |
615 | ||
616 | proc optparse-option {} { | |
617 | ## Parse the next option(s). The action taken depends on the option | |
618 | ## dictionary: if an `action' is provided then it is evaluated in the | |
619 | ## caller's context; otherwise the option's `tag' is returned. | |
620 | ||
621 | upvar #0 OPTPARSE_STATE state | |
622 | while 1 { | |
623 | if {![optparse-option/$state(mode) opt]} { | |
624 | return done | |
625 | } elseif {[info exists opt(action)]} { | |
626 | uplevel 1 $opt(action) | |
627 | } elseif {[info exists opt(tag)]} { | |
628 | return $opt(tag) | |
629 | } else { | |
630 | error "Don't know what to do with option `$state(prefix)$state(name)'" | |
631 | } | |
632 | } | |
633 | } | |
634 | ||
635 | proc with-option-parser {state words body} { | |
636 | ## Establish an option parsing context, initialized with the STATE | |
637 | ## (constructed using `define-options') and the lits of argument WORDS. | |
638 | ## The BODY may use `optparse-option', `optparse-arg', etc. to parse the | |
639 | ## options. | |
640 | ||
641 | global OPTPARSE_STATE | |
642 | set old [array get OPTPARSE_STATE] | |
643 | ||
644 | unwind-protect { | |
645 | array unset OPTPARSE_STATE | |
646 | array set OPTPARSE_STATE $state | |
647 | set OPTPARSE_STATE(mode) free | |
648 | set OPTPARSE_STATE(words) $words | |
649 | uplevel 1 $body | |
650 | } { | |
651 | array set OPTPARSE_STATE $old | |
652 | } | |
653 | } | |
654 | ||
655 | define-configuration-space optparse-option OPTCFG { | |
656 | define-list short {} | |
657 | define-list long {} | |
658 | define action {act} { set OPTCFG(action) $act } | |
659 | define tag {tag} { set OPTCFG(tag) $tag } | |
660 | define-simple arg none | |
661 | } | |
662 | ||
663 | define-configuration-space optparse OPTCFG { | |
664 | define option {body} { | |
665 | upvar #0 OPTPARSE_STATE state | |
666 | uplevel 1 [list confspc-eval optparse-option $body] | |
667 | set opt [array get OPTCFG] | |
668 | foreach kind {long short} { | |
669 | foreach name $OPTCFG($kind) { | |
670 | if {[dict exists $state($kind-map) $name]} { | |
671 | error "Already have an option with $kind name `$name'" | |
672 | } | |
673 | dict set state($kind-map) $name $opt | |
674 | } | |
675 | } | |
676 | } | |
677 | } | |
678 | ||
679 | proc define-options {statevar body} { | |
680 | ## Define an option state, and write it to STATEVAR. The BODY may contain | |
681 | ## `optparse' configuration directives to define the available options. | |
682 | ||
683 | global OPTPARSE_STATE | |
684 | upvar 1 $statevar state | |
685 | set old [array get OPTPARSE_STATE] | |
686 | unwind-protect { | |
687 | array unset OPTPARSE_STATE | |
688 | if {[info exists state]} { | |
689 | array set OPTPARSE_STATE $state | |
690 | } else { | |
691 | array set OPTPARSE_STATE { | |
692 | long-map {} | |
693 | short-map {} | |
694 | } | |
695 | } | |
696 | uplevel 1 [list confspc-eval optparse $body] | |
697 | set state [array get OPTPARSE_STATE] | |
698 | } { | |
699 | array set OPTPARSE_STATE $old | |
700 | } | |
701 | } | |
702 | ||
703 | ###-------------------------------------------------------------------------- | |
704 | ### Subcommand handling. | |
705 | ||
706 | ## Determine the program name. | |
707 | set QUIS [file tail $argv0] | |
708 | ||
709 | ## This is fluid-bound to the name of the current command. | |
710 | set COMMAND {} | |
711 | ||
712 | proc find-command {name} { | |
713 | ## Given a command NAME as typed by the user, find the actual command and | |
714 | ## return it. | |
715 | ||
716 | global HELP | |
717 | set matches [info commands cmd/$name*] | |
718 | set cmds {} | |
719 | set doc {} | |
720 | foreach match $matches { | |
721 | set cmd [string range $match 4 end] | |
722 | lappend cmds $cmd | |
723 | if {[info exists HELP($cmd)]} { lappend doc $cmd } | |
724 | } | |
725 | switch -exact -- [llength $cmds] { | |
726 | 1 { return [lindex $cmds 0] } | |
727 | 0 { optparse-error "Unknown command `$name'" } | |
728 | } | |
729 | if {[llength $doc]} { set cmds $doc } | |
730 | switch -exact -- [llength $cmds] { | |
731 | 1 { return [lindex $cmds 0] } | |
732 | 0 { optparse-error "Unknown command `$name'" } | |
733 | default { optparse-error "Ambiguous command `$name' -- matches: $cmds" } | |
734 | } | |
735 | } | |
736 | ||
737 | proc usage {cmd} { | |
738 | ## Return a usage message for CMD. The message is taken from the `USAGE' | |
739 | ## array if that contains an entry for CMD (it should not include the | |
740 | ## command name, and should begin with a leading space); otherwise a | |
741 | ## message is constructed by examining the argument names and defaulting | |
742 | ## arrangements of the Tcl command cmd/CMD. | |
743 | ## | |
744 | ## By convention, the main program is denoted by an empty CMD name. | |
745 | ||
746 | global USAGE | |
747 | if {[info exists USAGE($cmd)]} { | |
748 | set usage $USAGE($cmd) | |
749 | } else { | |
750 | set usage "" | |
751 | foreach arg [info args cmd/$cmd] { | |
752 | if {[string equal $arg "args"]} { | |
753 | append usage " ..." | |
754 | } elseif {[info default cmd/$cmd $arg hunoz]} { | |
755 | append usage " \[[string toupper $arg]\]" | |
756 | } else { | |
757 | append usage " [string toupper $arg]" | |
758 | } | |
759 | } | |
760 | } | |
761 | return $usage | |
762 | } | |
763 | ||
764 | proc usage-error {} { | |
765 | ## Report a usage error in the current command. The message is obtained by | |
766 | ## the `usage' procedure. | |
767 | ||
768 | global QUIS COMMAND | |
769 | if {[string length $COMMAND]} { set cmd " $COMMAND" } else { set cmd "" } | |
770 | puts stderr "Usage: $QUIS$cmd[usage $COMMAND]" | |
771 | exit 1 | |
772 | } | |
773 | ||
774 | proc dispatch {name argv} { | |
775 | ## Invokes the handler for CMD, passing it the argument list ARGV. This | |
776 | ## does some minimal syntax checking by examining the argument list to the | |
777 | ## command handler procedure cmd/COMMAND and issuing a usage error if | |
778 | ## there's a mismatch. | |
779 | ||
780 | global COMMAND | |
781 | let COMMAND [find-command $name] { | |
782 | ||
783 | ## Decode the argument list of the handler and set min and max | |
784 | ## appropriately. | |
785 | set args [info args cmd/$COMMAND] | |
786 | if {![llength $args]} { | |
787 | set* {min max} {0 0} | |
788 | } else { | |
789 | if {[string equal [lindex $args end] "args"]} { | |
790 | set max inf | |
791 | set args [lrange $args 0 end-1] | |
792 | } else { | |
793 | set max [llength $args] | |
794 | } | |
795 | set min 0 | |
796 | foreach arg $args { | |
797 | if {[info default cmd/$COMMAND $arg hunoz]} { break } | |
798 | incr min | |
799 | } | |
800 | } | |
801 | ||
802 | ## Complain if the number of arguments is inappropriate. | |
803 | set n [llength $argv] | |
804 | if {$n < $min || ($max != inf && $n > $max)} { usage-error } | |
805 | ||
806 | ## Invoke the handler. | |
807 | eval cmd/$COMMAND $argv | |
808 | } | |
809 | } | |
810 | ||
811 | define-configuration-space subcommand SUBCMD { | |
812 | define-simple help-text - | |
813 | define-simple usage-text - | |
814 | } | |
815 | ||
816 | proc defcmd {name bvl defs body} { | |
817 | ## Define a command NAME with arguments BVL. The `usage-text' and | |
818 | ## `help-text' commands can be used in DEFS to set messages for the new | |
819 | ## command. | |
820 | ||
821 | global SUBCMD USAGE HELP | |
822 | ||
823 | preserving-config SUBCMD { | |
824 | confspc-eval subcommand { uplevel 1 $defs } | |
825 | foreach tag {usage-text help-text} array {USAGE HELP} { | |
826 | if {![string equal $SUBCMD($tag) -]} { | |
827 | set ${array}($name) $SUBCMD($tag) | |
828 | } | |
829 | } | |
830 | } | |
831 | proc cmd/$name $bvl $body | |
832 | } | |
833 | ||
834 | ## Standard subcommand handler to show information about the program or its | |
835 | ## subcommands. To use this, you need to set a bunch of variables. | |
836 | ## | |
837 | ## USAGE(cmd) Contains the usage message for cmd -- including | |
838 | ## leading space -- to use instead of the `usage' | |
839 | ## procedure's automagic. | |
840 | ## | |
841 | ## HELP(cmd) Contains descriptive text -- not including a final | |
842 | ## trailing newline -- about the command. | |
843 | ## | |
844 | ## VERSION The program's version number. | |
845 | ## | |
846 | ## The `defcmd' procedure can be used to set these things up conveniently. | |
847 | defcmd help {args} { | |
848 | usage-text " \[SUBCOMMAND ...]" | |
849 | help-text "Show help on the given SUBCOMMANDs, or on the overall program." | |
850 | } { | |
851 | global QUIS VERSION USAGE HELP | |
852 | if {[llength $args]} { | |
853 | foreach name $args { | |
854 | set cmd [find-command $name] | |
855 | puts "Usage: $QUIS $cmd[usage $cmd]" | |
856 | if {[info exists HELP($cmd)]} { puts "\n$HELP($cmd)" } | |
857 | } | |
858 | } else { | |
859 | puts "$QUIS, version $VERSION\n" | |
860 | puts "Usage: $QUIS$USAGE()\n" | |
861 | if {[info exists HELP()]} { puts "$HELP()\n" } | |
862 | puts "Subcommands available:" | |
863 | foreach name [info commands cmd/*] { | |
864 | set cmd [string range $name 4 end] | |
865 | puts "\t$cmd[usage $cmd]" | |
866 | } | |
867 | } | |
868 | } | |
869 | ||
870 | ###-------------------------------------------------------------------------- | |
871 | ### Build the configuration space for zone files. | |
872 | ||
873 | proc host-addr {host} { | |
874 | ## Given a HOST name, return a list of its addresses. | |
875 | ||
876 | if {![string match $host {*[!0-9.]*}]} { return $host } | |
877 | set adns [open [list | adnshost +Dc -s $host] r] | |
878 | unwind-protect { | |
879 | set addrs {} | |
880 | while {[gets $adns line] >= 0} { | |
881 | set* {name type fam addr} $line | |
882 | switch -glob -- $type:$fam { | |
883 | A:INET { lappend addrs $addr } | |
884 | } | |
885 | } | |
886 | return [lindex $addrs 0] | |
887 | } { | |
888 | close $adns | |
889 | } | |
890 | } | |
891 | ||
892 | proc host-canonify {host} { | |
893 | ## Given a HOST name, return a canonical version of it. | |
894 | ||
895 | set adns [open [list | adnshost -Dc -s $host] r] | |
896 | unwind-protect { | |
897 | while {[gets $adns line] >= 0} { | |
898 | switch -exact -- [lindex $line 1] { | |
899 | CNAME { return [lindex $line 2] } | |
900 | A - AAAA { return [lindex $line 0] } | |
901 | } | |
902 | } | |
903 | error "failed to canonify $host" | |
904 | } { | |
905 | close $adns | |
906 | } | |
907 | } | |
908 | ||
909 | proc local-address-p {addr} { | |
910 | ## Answer whether the ADDR is one of the host's addresses. | |
911 | ||
912 | if {[catch { set sk [socket -server {} -myaddr $addr 0] }]} { | |
913 | return false | |
914 | } else { | |
915 | close $sk | |
916 | return true | |
917 | } | |
918 | } | |
919 | ||
920 | ## The list of zones configured by the user. | |
921 | set ZONES {} | |
922 | ||
923 | ## Dynamic zone update policy specifications. | |
924 | define-configuration-space policy ZONECFG { | |
925 | define allow {identity nametype name args} { | |
926 | lappend ZONECFG(ddns-policy) \ | |
927 | [concat grant [list $identity $nametype $name] $args] | |
928 | } | |
929 | define deny {identity nametype name args} { | |
930 | lappend ZONECFG(ddns-policy) \ | |
931 | [concat deny [list $identity $nametype $name] $args] | |
932 | } | |
933 | } | |
934 | ||
935 | ## Dynamic zone details. | |
936 | define-configuration-space dynamic ZONECFG { | |
937 | prefix "ddns-" | |
938 | define-simple key "ddns" | |
939 | define-list types {A TXT PTR} | |
940 | ||
941 | define policy {body} { | |
942 | set ZONECFG(ddns-policy) {} | |
943 | uplevel 1 [list confspc-eval policy $body] | |
944 | } | |
945 | ||
946 | set ZONECFG(ddns-policy) {} | |
947 | } | |
948 | ||
949 | ## Everything about a zone. | |
950 | define-configuration-space zone ZONECFG { | |
951 | define-simple user root | |
952 | define-simple master-dir "/var/lib/bind" | |
953 | define-simple slave-dir "/var/cache/bind" | |
954 | define-simple dir-mode 2775 | |
955 | define-simple zone-file "%v/%z.zone" | |
956 | define-list views * | |
957 | define-list reload-command {/usr/sbin/rndc reload %z IN %v} | |
958 | define-list checkzone-command { | |
959 | /usr/sbin/named-checkzone | |
960 | -i full | |
961 | -k fail | |
962 | -M fail | |
963 | -n fail | |
964 | -S fail | |
965 | -W fail | |
966 | %z | |
967 | %f | |
968 | } | |
969 | ||
970 | define primary {map} { | |
971 | if {[llength $map] % 2} { | |
972 | error "master map must have an even number of items" | |
973 | } | |
974 | set ZONECFG(master-map) $map | |
975 | } | |
976 | ||
977 | define dynamic {{body {}}} { | |
978 | array set ZONECFG [list type dynamic] | |
979 | uplevel 1 [list confspc-eval dynamic $body] | |
980 | } | |
981 | ||
982 | define view-map {map} { | |
e83cb954 MW |
983 | |
984 | ## OK, this needs careful documentation. | |
985 | ## | |
986 | ## The local nameserver presents a number of views according to its | |
987 | ## configuration. It is our purpose here to generate a configuration | |
988 | ## snippet for such a view. | |
989 | ## | |
990 | ## A user might have several different views of a zone which are meant to | |
991 | ## be presented to different clients. These map on to the server views | |
992 | ## in a one-to-many fashion. The `view-map' option defines this mapping. | |
993 | ## The argument is a list of alternating SERVER-VIEW USER-VIEW pairs; the | |
994 | ## SERVER-VIEW may be a glob pattern; the USER-VIEW may be the special | |
995 | ## token `=' to mean `same as the SERVER-VIEW'. | |
996 | ## | |
997 | ## We only keep one copy of the zone file for each user view: if the user | |
998 | ## view is used by many server views, then the zone stanza for each of | |
999 | ## those views refers to the same zone file. | |
1000 | ||
2a65b7cf MW |
1001 | if {[llength $map] % 2} { |
1002 | error "view map must have an even number of items" | |
1003 | } | |
1004 | set ZONECFG(view-map) $map | |
1005 | } | |
1006 | ||
1007 | array set ZONECFG { | |
1008 | type static | |
1009 | view-map {* =} | |
1010 | } | |
1011 | } | |
1012 | ||
1013 | ## Top-level configuration. Allow most zone options to be set here, so that | |
1014 | ## one can set defaults for multiple zones conveniently. | |
1015 | define-configuration-space toplevel ZONECFG { | |
1016 | include zone | |
1017 | ||
1018 | define-list all-views {} | |
1019 | define-simple conf-file "/var/lib/zoneconf/config/%v.conf" | |
1020 | define-simple max-zone-size [expr {512*1024}] | |
1021 | define-list reconfig-command {/usr/sbin/rndc reconfig} | |
1022 | ||
1023 | define scope {body} { preserving-config ZONECFG { uplevel 1 $body } } | |
1024 | ||
1025 | define zone {name {body {}}} { | |
1026 | global ZONES | |
1027 | preserving-config ZONECFG { | |
1028 | array set ZONECFG \ | |
1029 | [list name $name \ | |
1030 | type static] | |
1031 | uplevel 1 [list confspc-eval zone $body] | |
1032 | lappend ZONES [array get ZONECFG] | |
1033 | } | |
1034 | } | |
1035 | } | |
1036 | ||
1037 | ###-------------------------------------------------------------------------- | |
1038 | ### Processing the results. | |
1039 | ||
1040 | proc zone-file-name {view config} { | |
1041 | ## Return the relative file name for the zone described by CONFIG, relative | |
1042 | ## to the given VIEW. An absolute filename may be derived later, depending | |
1043 | ## on whether the zone data is static and the calling host is the master | |
1044 | ## for the zone. | |
1045 | ||
1046 | array set zone $config | |
1047 | return [string map [list \ | |
1048 | "%v" $view \ | |
1049 | "%z" $zone(name)] \ | |
1050 | $zone(zone-file)] | |
1051 | } | |
1052 | ||
1053 | proc output-file-name {view} { | |
1054 | ## Return the output file name for the given VIEW. | |
1055 | ||
1056 | global ZONECFG | |
1057 | return [string map [list %v $view] $ZONECFG(conf-file)] | |
1058 | } | |
1059 | ||
1060 | proc compute-zone-properties {view config} { | |
1061 | ## Derive interesting information from the zone configuration plist CONFIG, | |
e83cb954 | 1062 | ## relative to the stated server VIEW. Return a new plist. |
2a65b7cf MW |
1063 | |
1064 | array set zone $config | |
1065 | ||
1066 | ## See whether the zone matches the view. | |
1067 | set match 0 | |
1068 | foreach wanted $zone(views) { | |
1069 | if {[string match $wanted $view]} { set match 1; break } | |
1070 | } | |
1071 | if {!$match} { return {config-type ignore} } | |
1072 | ||
1073 | ## Transform the view name according to the view map. | |
1074 | foreach {inview outview} $zone(view-map) { | |
1075 | if {![string match $inview $view]} { continue } | |
1076 | switch -exact -- $outview { | |
1077 | = { set zone(mapped-view) $view } | |
1078 | default { set zone(mapped-view) $outview } | |
1079 | } | |
1080 | break | |
1081 | } | |
1082 | ||
1083 | ## Find out where the master is supposed to be. | |
1084 | set zone(config-type) ignore | |
1085 | if {[info exists zone(mapped-view)]} { | |
1086 | foreach {outview hosts} $zone(master-map) { | |
1087 | if {[string match $outview $zone(mapped-view)]} { | |
1088 | set zone(masters) $hosts | |
1089 | set zone(config-type) slave | |
1090 | foreach host $hosts { | |
1091 | if {[local-address-p $host]} { | |
1092 | set zone(config-type) master | |
1093 | } | |
1094 | } | |
1095 | break | |
1096 | } | |
1097 | } | |
1098 | } | |
1099 | ||
1100 | ## Main dispatch for zone categorization. | |
1101 | switch -exact -- $zone(config-type) { | |
1102 | master { | |
1103 | switch -exact -- $zone(type) { | |
1104 | static { | |
1105 | set zone(file-name) \ | |
1106 | [file join $zone(master-dir) \ | |
1107 | [zone-file-name $zone(mapped-view) $config]] | |
1108 | } | |
1109 | dynamic { | |
1110 | set zone(file-name) [file join $zone(slave-dir) \ | |
1111 | [zone-file-name $view $config]] | |
1112 | } | |
1113 | } | |
1114 | } | |
1115 | slave { | |
1116 | set zone(file-name) [file join $zone(slave-dir) \ | |
1117 | [zone-file-name $view $config]] | |
1118 | } | |
1119 | } | |
1120 | ||
1121 | ## Done. | |
1122 | return [array get zone] | |
1123 | } | |
1124 | ||
1125 | proc write-ddns-update-policy {prefix chan config} { | |
1126 | ## Write an `update-policy' stanza to CHAN for the zone described by the | |
1127 | ## CONFIG plist. The PREFIX is written to the start of each line. | |
1128 | ||
1129 | array set zone $config | |
1130 | puts $chan "${prefix}update-policy {" | |
1131 | set policyskel "${prefix}\t%s %s %s \"%s\" %s;" | |
1132 | ||
1133 | foreach item $zone(ddns-policy) { | |
1134 | set* {verb ident type name} [lrange $item 0 3] | |
1135 | set rrtypes [lrange $item 4 end] | |
1136 | puts $chan [format $policyskel \ | |
1137 | $verb \ | |
1138 | $ident \ | |
1139 | $type \ | |
1140 | $name \ | |
1141 | $rrtypes] | |
1142 | } | |
1143 | ||
1144 | puts $chan [format $policyskel \ | |
1145 | grant \ | |
1146 | $zone(ddns-key) \ | |
1147 | subdomain \ | |
1148 | $zone(name) \ | |
1149 | $zone(ddns-types)] | |
1150 | ||
1151 | puts $chan "${prefix}};" | |
1152 | } | |
1153 | ||
1154 | proc write-zone-stanza {view chan config} { | |
1155 | ## Write a `zone' stanza to CHAN for the zone described by the CONFIG | |
1156 | ## plist in the given VIEW. | |
1157 | ||
1158 | array set zone [compute-zone-properties $view $config] | |
1159 | if {[string equal $zone(config-type) "ignore"]} { return } | |
1160 | ||
1161 | ## Create the directory for the zone files. | |
1162 | set dir [file dirname $zone(file-name)] | |
1163 | if {![file isdirectory $dir]} { | |
1164 | file mkdir $dir | |
1165 | exec chmod $zone(dir-mode) $dir | |
1166 | } | |
1167 | ||
1168 | ## Write the configuration fragment. | |
1169 | puts $chan "\nzone \"$zone(name)\" {" | |
1170 | switch -glob -- $zone(config-type) { | |
1171 | master { | |
1172 | puts $chan "\ttype master;" | |
1173 | puts $chan "\tfile \"$zone(file-name)\";" | |
1174 | switch -exact -- $zone(type) { | |
1175 | dynamic { write-ddns-update-policy "\t" $chan $config } | |
1176 | } | |
1177 | } | |
1178 | slave { | |
1179 | puts $chan "\ttype slave;" | |
1180 | set masters {} | |
1181 | foreach host $zone(masters) { lappend masters [host-addr $host] } | |
1182 | puts $chan "\tmasters { [join $masters {; }]; };" | |
1183 | puts $chan "\tfile \"$zone(file-name)\";" | |
1184 | switch -exact -- $zone(type) { | |
1185 | dynamic { puts $chan "\tallow-update-forwarding { any; };" } | |
1186 | } | |
1187 | } | |
1188 | } | |
1189 | puts $chan "};"; | |
1190 | } | |
1191 | ||
1192 | ###-------------------------------------------------------------------------- | |
1193 | ### Command-line interface. | |
1194 | ||
1195 | set CONFFILE "/etc/bind/zones.in" | |
1196 | ||
1197 | defcmd outputs {} { | |
1198 | help-text "List the output file names to stdout." | |
1199 | } { | |
1200 | global ZONECFG CONFFILE | |
1201 | ||
1202 | confspc-eval toplevel [list source $CONFFILE] | |
1203 | foreach view $ZONECFG(all-views) { puts [output-file-name $view] } | |
1204 | } | |
1205 | ||
1206 | defcmd update {} { | |
1207 | help-text "Generate BIND configuration files." | |
1208 | } { | |
1209 | global ZONECFG ZONES CONFFILE | |
1210 | ||
1211 | confspc-eval toplevel [list source $CONFFILE] | |
1212 | set win false | |
1213 | unwind-protect { | |
1214 | foreach view $ZONECFG(all-views) { | |
1215 | set out($view) [output-file-name $view] | |
1216 | set chan($view) [open "$out($view).new" w] | |
1217 | set now [clock format [clock seconds] -format "%Y-%m-%d %H:%M:%S"] | |
1218 | puts $chan($view) "### -*-conf-javaprop-*-" | |
1219 | puts $chan($view) "### Generated at $now: do not edit" | |
1220 | foreach zone $ZONES { | |
1221 | write-zone-stanza $view $chan($view) $zone | |
1222 | } | |
1223 | } | |
1224 | set win true | |
1225 | } { | |
0c009ef6 | 1226 | foreach view $ZONECFG(all-views) { close $chan($view) } |
2a65b7cf MW |
1227 | if {$win} { |
1228 | foreach view $ZONECFG(all-views) { | |
1229 | file rename -force -- "$out($view).new" $out($view) | |
1230 | } | |
1231 | eval exec $ZONECFG(reconfig-command) | |
1232 | } else { | |
1233 | file delete -force -- "$out($view).new" | |
1234 | } | |
1235 | } | |
1236 | } | |
1237 | ||
1238 | defcmd install {user view name} { | |
1239 | help-text "Install a new zone file. | |
1240 | ||
1241 | The file is for the given zone NAME and the \(user-side) VIEW. The file is | |
1242 | provided by the named USER" | |
1243 | } { | |
1244 | global QUIS ZONECFG ZONES CONFFILE errorInfo errorCode | |
1245 | ||
1246 | confspc-eval toplevel [list source $CONFFILE] | |
1247 | ||
1248 | file mkdir [file join $ZONECFG(master-dir) "tmp"] | |
1249 | ||
1250 | set cleanup {} | |
1251 | unwind-protect { | |
1252 | ||
1253 | set matchview {} | |
1254 | foreach iview $ZONECFG(all-views) { | |
1255 | foreach info $ZONES { | |
1256 | array unset zone | |
1257 | array set zone [compute-zone-properties $iview $info] | |
1258 | if {[string equal $user $zone(user)] && \ | |
1259 | [string equal "$zone(config-type)/$zone(type)" \ | |
1260 | "master/static"] && \ | |
1261 | [string equal $zone(name) $name] && \ | |
1262 | [string equal $zone(mapped-view) $view]} { | |
1263 | lappend matchview $iview | |
1264 | if {![info exists matchinfo]} { set matchinfo [array get zone] } | |
1265 | } | |
1266 | } | |
1267 | } | |
1268 | if {![llength $matchview]} { | |
1269 | optparse-error "No match for zone `$name' in view `$view'" | |
1270 | } | |
1271 | array unset zone | |
1272 | array set zone $matchinfo | |
1273 | ||
1274 | set pid [pid] | |
1275 | for {set i 0} {$i < 1000} {incr i} { | |
1276 | set tmp [file join $ZONECFG(master-dir) "tmp" \ | |
1277 | "tmp.$pid.$i.$user.$name"] | |
1278 | if {![catch { set chan [open $tmp {WRONLY CREAT EXCL}] } msg]} { | |
1279 | break | |
1280 | } elseif {[string equal [lindex $errorCode 0] POSIX] && \ | |
1281 | ![string equal [lindex $errorCode 1] EEXIST]} { | |
1282 | error $msg $errorInfo $errorCode | |
1283 | } | |
1284 | } | |
1285 | if {![info exists chan]} { error "failed to create temporary file" } | |
1286 | set cleanup [list file delete $tmp] | |
1287 | ||
1288 | set total 0 | |
1289 | while {true} { | |
1290 | set stuff [read stdin 4096] | |
1291 | if {![string length $stuff]} { break } | |
1292 | puts -nonewline $chan $stuff | |
1293 | incr total [string bytelength $stuff] | |
1294 | if {$total > $ZONECFG(max-zone-size)} { | |
1295 | error "zone file size limit exceeded" | |
1296 | } | |
1297 | } | |
1298 | close $chan | |
1299 | ||
1300 | set cmd {} | |
1301 | foreach item $zone(checkzone-command) { | |
1302 | lappend cmd [string map [list \ | |
1303 | "%z" $name \ | |
1304 | "%v" $view \ | |
1305 | "%f" $tmp] \ | |
1306 | $item] | |
1307 | } | |
1308 | set rc [catch { | |
1309 | set out [eval exec $cmd] | |
1310 | } msg] | |
1311 | if {$rc} { set out $msg } | |
1312 | set out "| [string map [list "\n" "\n| "] $out]" | |
1313 | if {$rc} { | |
1314 | puts stderr "$QUIS: zone check failed..." | |
1315 | puts stderr $out | |
1316 | exit 1 | |
1317 | } else { | |
1318 | puts "$QUIS: zone check output..." | |
1319 | puts $out | |
1320 | } | |
1321 | ||
1322 | file rename -force -- $tmp $zone(file-name) | |
1323 | set cleanup {} | |
1324 | foreach view $matchview { | |
1325 | set cmd {} | |
1326 | foreach item $zone(reload-command) { | |
1327 | lappend cmd [string map [list \ | |
1328 | "%v" $view \ | |
1329 | "%z" $zone(name)] \ | |
1330 | $item] | |
1331 | } | |
1332 | eval exec $cmd | |
1333 | } | |
1334 | } { | |
1335 | eval $cleanup | |
1336 | } | |
1337 | } | |
1338 | ||
1339 | ###-------------------------------------------------------------------------- | |
1340 | ### Main program. | |
1341 | ||
1342 | set VERSION "1.0.0" | |
1343 | set USAGE() " \[-OPTIONS] SUBCOMMAND \[ARGUMENTS...]" | |
1344 | ||
1345 | define-options OPTS { | |
1346 | option { | |
1347 | short "h"; long "help" | |
1348 | action { eval cmd/help [optparse-words]; exit } | |
1349 | } | |
1350 | option { | |
1351 | short "v"; long "version" | |
1352 | action { puts "$QUIS, version $VERSION"; exit } | |
1353 | } | |
1354 | option { | |
1355 | short "c"; long "config"; arg required | |
1356 | action { set CONFFILE [optparse-arg] } | |
1357 | } | |
1358 | } | |
1359 | ||
1360 | with-option-parser $OPTS $argv { | |
1361 | optparse-option | |
1362 | set argv [optparse-words] | |
1363 | } | |
1364 | ||
1365 | if {![llength $argv]} { usage-error } | |
1366 | dispatch [lindex $argv 0] [lrange $argv 1 end] | |
1367 | ||
1368 | ###----- That's all, folks -------------------------------------------------- |