3 # Code for a generic cgi wizard. The wizard save
4 # for each stage in the process, provides validation of fields via
5 # regular expressions, and manages button presses etc. It allows pages
6 # to be used to enter multiple sets of values, all of which are stored.
8 # 1) create a wizard array. Each array element specifies
9 # a page in the wizard. Each element should be a comma-separated
10 # string, containing the following values:
11 # - "page": the .cgi file for the page
12 # - "min": the minimum valid number of datafiles
13 # required for this page
14 # - "max": the maximum valid number of datafiles
15 # required for this page.
16 # An example of a valid entry would be "page=mywizpage.cgi,min=1,max=1".
18 # The wizard allows pages to be used to enter multiple sets of
19 # properties. Each wizard page has an associated data file, and
20 # where multiple datafiles are valid (i.e. max_datafiles>1),
21 # they are numbered monotonically.
22 # 2) Create a .cgi file for each wizard page you specified in the
23 # wizard array. Each wizard page will call wizard_header(),
24 # wizard_[inputtype]() for each data field and wizard_footer().
25 # 3) Create a submit .cgi script that processes the set of datafiles
30 # Wizard consists of a main table holding 3 subtables
31 # - the description/image table, taking up the LHS
32 # - the data table, where fields appear, on the RHS
33 # - the button table on the bottom
34 # The data table is opened, and rows are added by calls
35 # to wizard_input(). wizard_footer() adds the button table.
39 # This variable is set to 0 whenever an element in the form fails to
40 # validate against its regular expression. This prevents progress, and the
41 # highlighted elements are marked in red.
42 $validation_success = 1;
44 # Creates tables/subtables, show image etc.
46 # Parameters: ref_to_array_of_wizard_element_hashes, pagename, heading,
47 # description, imagename
51 local ($wizinfo, %wizard, $wizref, $pagename, $heading, $description, $image);
52 ($wizinfo, $pagename, $heading, $description, $image) = @_;
53 %wizard = &read_in_wizard("$wizinfo");
55 $pageinst = &wizard_get_pageinst();
56 $submit = &get_wizard_info_by_name($wizref, "submit");
57 print "<form method=\"POST\" action=\"$submit\">\n";
58 print "<table border cellpadding=0 cellspacing=0 width=100%>\n";
59 print "<tr $cb><td>\n";
60 print "<table noborder cellpadding=0 cellspacing=0 width=100% height=15%>\n";
61 print "<tr $tb><td>$heading</td></tr></table></td></tr>\n";
62 print "<tr $cb><td>\n";
63 print "<table border cellpadding=0 cellspacing=0 width=100% height=70%>\n";
65 # LHS consists description + optional image.
66 print "<tr $cb><td>\n";
67 print "<table noborder cellpadding=0 cellspacing=0>\n";
69 print "<tr $cb><td><img src=$image alt=\"\"></td>\n";
71 print "<td><p>$description</p></td></tr></table></td>\n";
73 # RHS contains information supplied by calls to wizard_input(), i.e.
74 # it`s where data is entered. We open this table and close it with
75 # wizard_footer() below...
77 print "<td><table noborder cellpadding=0 cellspacing=0>\n";
82 local ($wizinfo, $pagename, %wizard, $wizref, $min_datafiles, $max_datafiles,
83 $pageinst, $pagenum, $datafile, $back_disabled, $next_disable,
84 $add_disabled, $remove_disabled, $finish_disabled, @wizard_pages,
86 ($wizinfo, $pagename) = @_;
87 %wizard = &read_in_wizard("$wizinfo");
89 $pageinst = &wizard_get_pageinst();
91 $min_datafiles = &get_wizard_info_by_name($wizref, "min_datafiles", $pagename);
92 $max_datafiles = &get_wizard_info_by_name($wizref, "max_datafiles", $pagename);
93 $pagenum = &get_wizard_info_by_name($wizref, "pagenum", $pagename);
94 $datafile = &wizard_datafile_name($pagename, $pageinst);
96 # which buttons do we show?
99 # first page, first instance, so no back button
100 if (($pagenum == 0) && ($pageinst == 0)) {
101 $back_disabled="disabled=\"disabled\"";
104 $next_disabled = "disabled=\"disabled\"";
105 # if we have met or exceeded minimum requirement of datafiles for
106 # this page, and are not on last page, or there are subsequent
107 # instances, enable next button
108 @datafiles = &list_wizard_datafiles($pagename);
109 @num_pages = &get_wizard_info_by_name($wizref, "pages");
110 @num_pageinsts = &list_wizard_datafiles($pagename);
111 if ((($pagenum < (@num_pages - 1)) && (@datafiles >= $min_datafiles)) ||
112 (($pageinst < (@num_pageinsts - 1)))) {
117 $update_disabled = "disabled=\"disabled\"";
118 $new_disabled = "disabled=\"disabled\"";
119 $remove_disabled="disabled=\"disabled\"";
120 # if we have data already for page, dont disable remove/clear, disable add,
122 @thispage_datafiles = &list_wizard_datafiles("$pagename.$pageinst");
123 if (@thispage_datafiles > 0) {
124 $remove_disabled = "";
125 $add_disabled = "disabled=\"disabled\"";
126 $update_disabled = "";
127 # enable new if we can have more instances....
128 if ($pageinst < ($max_datafiles - 1)) {
133 # can we show finish button? if each page has exceeded it`s minimum
134 # amount of datafiles, and each datafile has validation_success == 1, yes.
135 $finish_disabled = "";
136 @wizard_pages = &get_wizard_info_by_name($wizref, "pages");
137 foreach $page (@wizard_pages) {
138 @datafiles = &list_wizard_datafiles("$page->{'pagename'}");
139 foreach $datafile (@datafiles) {
140 # get instance number...
141 $datafile =~ /$page->{'pagename'}\.([0-9]*)/;
143 $validated = &wizard_get_data_value($page->{'pagename'},
144 $inst, "validation_success");
145 if ($validated != 1) {
146 # instance not valid!
147 $finish_disabled = "disabled=\"disabled\"";
150 $page_min_datafiles = &get_wizard_info_by_name($wizref, "min_datafiles",
151 "$page->{'pagename'}");
152 if (@datafiles < $page_min_datafiles) {
153 # haven't got minimum number of instances!
154 $finish_disabled = "disabled=\"disabled\"";
158 print "</table></td></tr></table></td></tr>\n";
160 # include hidden parameters here. These are:
161 # - pagename: current pagename
162 # - pageinst: current pageinst
163 print "<input type=\"hidden\" name=\"pagename\" value=\"$pagename\">";
164 print "<input type=\"hidden\" name=\"pageinst\" value=\"$pageinst\">";
167 print "<tr $cb><td>\n";
168 print "<table noborder cellpadding=0 cellspacing=0 width=100% height=15%>";
169 print "<tr $cb><td>\n";
171 "<input type=\"submit\" name=\"submit\" value=\"$text{'wizard_back'}\" $back_disabled>\n";
174 "<input type=\"submit\" name=\"submit\" value=\"$text{'wizard_new'}\" $new_disabled>\n";
177 "<input type=\"submit\" name=\"submit\" value=\"$text{'wizard_add'}\" $add_disabled>\n";
180 "<input type=\"submit\" name=\"submit\" value=\"$text{'wizard_update'}\" $update_disabled>\n";
183 "<input type=\"submit\" name=\"submit\" value=\"$text{'wizard_remove'}\" $remove_disabled>\n";
186 "<input type=\"submit\" name=\"submit\" value=\"$text{'wizard_next'}\" $next_disabled>\n";
189 "<input type=\"submit\" name=\"submit\" value=\"$text{'wizard_finish'}\" $finish_disabled>\n";
190 print "</td></tr></table></td></tr></table></form>\n";
192 # if we are validating page, ensure that we redirect!
193 if ($validation_success == 1) {
194 # do redirect if next page/inst are defined
195 &wizard_redirect_next($pagename, $pageinst);
201 local ($pagename, $description, $name, $size, $validation_regexp,
202 $validation_err, $pageinst, $value);
203 ($pagename, $description, $name, $size, $validation_regexp, $validation_err)
205 $value = &wizard_form_input_header($pagename, $description, $name,
206 $validation_regexp, $validation_err);
207 print "<input size=$size name=\"$name\" value=\"$value\">\n";
208 &wizard_form_input_footer();
211 sub wizard_textarea()
213 local ($pagename, $description, $name, $rows, $cols, $validation_regexp,
214 $validation_err, $pageinst, $value);
215 ($pagename, $description, $name, $rows, $cols, $validation_regexp,
216 $validation_err) = @_;
217 $value = &wizard_form_input_header($pagename, $description, $name,
218 $validation_regexp, $validation_err);
219 print "<textarea rows=$rows cols=$cols name=\"$name\" wrap=\"virtual\">\n";
221 print "</textarea>\n";
222 &wizard_form_input_footer();
227 local ($pagename, $description, $name, $selection_arrayref, $validation_regexp,
228 $validation_err, $pageinst, $value, @array, $elt, $select);
229 ($pagename, $description, $name, $selection_arrayref, $validation_regexp,
230 $validation_err) = @_;
231 $value = &wizard_form_input_header($pagename, $description, $name,
232 $validation_regexp, $validation_err);
233 print "<select name=\"$name\" size=1>\n";
234 @array = @$selection_arrayref;
235 foreach $elt (@array) {
237 if ("$elt" eq "$value") {
238 $select = "selected";
240 print "<option $select>$elt</option>\n";
243 &wizard_form_input_footer();
246 # subfns used for wizard form inputs...
248 sub wizard_form_input_header()
250 local ($pagename, $description, $name, $validation_regexp,
251 $validation_err, $pageinst, $value);
252 ($pagename, $description, $name, $validation_regexp, $validation_err) = @_;
253 $pageinst = &wizard_get_pageinst();
254 $value = &wizard_get_data_value($pagename, $pageinst, $name);
255 &wizard_validate_input($value, $validation_regexp, $validation_err);
256 print "<tr $cb><td><p>$description</p></td></tr><tr $cb><td>\n";
260 sub wizard_form_input_footer()
262 print "</td></tr>\n";
265 # Deals with page submission
267 # Parameters: ref_to_array_of_wizard_element_hashes, pagename, heading,
268 # description, imagename
270 sub wizard_process_submit()
272 local ($wizinfo, %wizard, $wizref, $pagename, $heading, $description, $image);
273 ($wizinfo, $pagename, $heading, $description, $image) = @_;
274 %wizard = &read_in_wizard("$wizinfo");
276 $pageinst = &wizard_get_pageinst();
277 if (defined($in{'submit'})) {
278 $button_name = $in{'submit'};
280 &error("No button name passed to wizard_process_submit!");
282 if ($button_name eq "$text{'wizard_finish'}") {
283 # finish is the submit scripts problem!
286 if (defined($in{'pagename'})) {
287 $pagename = $in{'pagename'};
289 &error("No page name passed to wizard_process_submit!");
291 if (defined($in{'pageinst'})) {
292 $pageinst = $in{'pageinst'};
294 &error("No page instance passed to wizard_process_submit!");
296 if ($button_name eq "$text{'wizard_back'}") {
298 $previous_pagename = $pagename;
299 $previous_pageinst = $pageinst;
300 $pagenum = &get_wizard_info_by_name($wizref, "pagenum",
302 if (($pageinst == 0) && ($pagenum > 0)) {
303 $previous_pagenum = $pagenum - 1;
304 $previous_pagename = &get_wizard_info_by_page($wizref,
305 "pagename", $previous_pagenum);
306 @num_pageinsts = &list_wizard_datafiles($previous_pagename);
307 if (@num_pageinsts > 0) {
308 $previous_pageinst = @num_pageinsts - 1;
310 } elsif ($pageinst > 0) {
311 $previous_pageinst = $pageinst - 1;
313 # validation needed? does data already exist for page?
314 $validate_option = "";
315 $previous_datafile = "$previous_pagename.$previous_pageinst";
316 @datafiles = &list_wizard_datafiles($previous_datafile);
317 if (@datafiles > 0) {
318 $validate_option = "&validate=1";
321 ("$previous_pagename?pageinst=$previous_pageinst$validate_option");
323 if ($button_name eq "$text{'wizard_next'}") {
325 $next_pagename = $pagename;
326 $next_pageinst = $pageinst;
327 @num_pageinsts = &list_wizard_datafiles($pagename);
329 if (@num_pageinsts > 0) {
330 $lastinst = @num_pageinsts - 1;
332 if ($pageinst >= $lastinst) {
333 $pagenum = &get_wizard_info_by_name($wizref, "pagenum",
335 @num_pages = &get_wizard_info_by_name($wizref, "pages");
336 if ($pagenum < (@num_pages - 1)) {
337 $next_pagenum = $pagenum + 1;
338 $next_pagename = &get_wizard_info_by_page($wizref,
339 "pagename", $next_pagenum);
343 $next_pageinst = $pageinst + 1;
345 # validation needed? does data already exist for page?
346 $next_datafile = "$next_pagename.$next_pageinst";
347 @datafiles = &list_wizard_datafiles($next_datafile);
348 $validate_option= "";
349 if (@datafiles > 0) {
350 $validate_option = "&validate=1";
352 &redirect("$next_pagename?pageinst=$next_pageinst$validate_option");
354 if ($button_name eq "$text{'wizard_new'}") {
355 # for new, if we have less than full complement of instances,
356 # use the last unused instance, otherwise stay here
357 $next_pagename = $pagename;
358 $next_pageinst = $pageinst;
359 @num_pageinsts = &list_wizard_datafiles($pagename);
360 $max_inst = &get_wizard_info_by_name($wizref, "max_datafiles",
362 if (@num_pageinsts <= $max_inst) {
363 $next_pageinst = @num_pageinsts;
365 &redirect("$next_pagename?pageinst=$next_pageinst");
367 if ($button_name eq "$text{'wizard_remove'}") {
368 &wizard_clear_data($pagename, $pageinst);
369 &redirect("$pagename?pageinst=$pageinst");
371 if (($button_name eq "$text{'wizard_add'}") ||
372 ($button_name eq "$text{'wizard_update'}")) {
374 $next_pagename = $pagename;
375 $next_pageinst = $pageinst;
376 $max_inst = &get_wizard_info_by_name($wizref, "max_datafiles",
378 if ($pageinst < ($max_inst - 1)) {
379 # in this case, add can move to another instance
380 $next_pageinst = $pageinst + 1;
382 # in this case, add moves to next page if possible
383 $pagenum = &get_wizard_info_by_name($wizref, "pagenum",
385 @num_pages = &get_wizard_info_by_name($wizref, "pages");
386 if ($pagenum < (@num_pages - 1)) {
387 $next_pagenum = $pagenum + 1;
388 $next_pagename = &get_wizard_info_by_page($wizref,
389 "pagename", $next_pagenum);
393 # save data and reload validation stage (which includes automatic
394 # redirect if no validation errors occur)
395 &wizard_save_data($pagename, $pageinst);
396 $validation_success = 1;
397 &redirect("$pagename?pageinst=$pageinst&validate=1&next_pagename=$next_pagename&next_pageinst=$next_pageinst");
401 &error("Invalid button name $button_name!");
404 # Return pageinst if defined, 0 otherwise.
408 sub wizard_get_pageinst()
411 if (defined($in{'pageinst'})) {
412 $pageinst = $in{'pageinst'};
419 # Redirect to next target pagename/pageinst are defined...
423 sub wizard_redirect_next()
425 local ($pagename, $pageinst);
426 ($pagename, $pageinst) = @_;
427 if ((defined($in{'next_pagename'})) && (defined($in{'next_pageinst'}))) {
428 # add validation success value to datafile
429 # add validation result to datafile - used to assess if we can finish
430 &wizard_save_validation_value($pagename, $pageinst);
431 # if validation succeeded, move on...
432 if ($validation_success == 1) {
435 location.href = '$in{'next_pagename'}?pageinst=$in{'next_pageinst'}';
442 sub wizard_validate_input()
444 local ($value, $validation_regexp, $validation_err);
445 ($value, $validation_regexp, $validation_err) = @_;
446 # do we do validation here?
447 if (defined($in{'validate'})) {
448 if ($in{'validate'} == 1) {
449 if ($value =~ /^$validation_regexp$/) {
450 # ok, so we can redirect
452 print "<tr $cb><td>\n";
454 "<i><font color=#FF0000>$validation_err</font></i>";
455 print "</td></tr>\n";
456 # flag global var to indicate validation failed - no
457 # redirect will occur as a result...
458 $validation_success = 0;
464 # Give appropriate full path to datafile when given pagename/inst
466 # Parameters: pagename, pageinst
468 sub wizard_datafile_name()
470 local ($pagename, $pageinst);
471 ($pagename, $pageinst) = @_;
472 return "$module_config_directory/${pagename}.${pageinst}.wizdata";
475 # Saves data to datafile for page/inst
477 # Parameters: pagename, pageinst
479 sub wizard_save_data()
481 local ($pagename, $pageinst, @inkeys, $datafile);
482 ($pagename, $pageinst) = @_;
483 $datafile = &wizard_datafile_name($pagename, $pageinst);
484 # save webmin's "in" hash to file
486 open(DATAFILE,">$datafile");
487 foreach $inkey (@inkeys) {
488 print DATAFILE "$inkey=$in{$inkey}\n";
493 sub wizard_save_validation_value()
495 local ($pagename, $pageinst, $datafile);
496 ($pagename, $pageinst) = @_;
497 $datafile = &wizard_datafile_name($pagename, $pageinst);
498 open(DATAFILE,">>$datafile");
499 print DATAFILE "validation_success=$validation_success";
503 # Removes all datafiles for wizard
505 # Parameters: wizard_info
507 sub wizard_clear_all_data()
509 local ($wizinfo, %wizard, $wizref, @pages, $page, @allinsts, $inst);
511 %wizard = &read_in_wizard("$wizinfo");
513 @pages = &get_wizard_info_by_name($wizref, "pages");
514 foreach $page (@pages) {
515 @allinsts = &list_wizard_datafiles("$page->{'pagename'}");
516 foreach $inst (@allinsts) {
522 # Removes datafile, moves those above down one instance
524 # Parameters: pagename, pageinst
526 sub wizard_clear_data()
528 local ($pagename, $pageinst, $datafile, @num_inst, $instnum);
529 ($pagename, $pageinst) = @_;
530 $datafile = &wizard_datafile_name($pagename, $pageinst);
531 @num_inst = &list_wizard_datafiles($pagename);
533 # move all instances above deleted instance down one to fill gap....
534 for ($instnum = $pageinst + 1; $instnum < @num_inst; $instnum++) {
535 $datafile_old = &wizard_datafile_name($pagename,
537 $datafile_new = &wizard_datafile_name($pagename,
539 rename($datafile_old, $datafile_new);
543 # Reads wizard data file into key-value hash
545 # Parameters: pagename, pageinst
547 sub wizard_get_data()
549 local ($pagename, $pageinst, $datafile, @data, $line, $key, $value, %hash);
550 ($pagename, $pageinst) = @_;
551 $datafile = &wizard_datafile_name($pagename, $pageinst);
552 open(DATAFILE, $datafile);
554 foreach $line (@data) {
555 if ($line =~ /^\s*\#/) {
558 if ($line =~ /\s*([^=]+)=(.*)/) {
561 $hash{"$key"} = "$value";
567 # Gets data value for particular page/inst
569 # Parameters: pagename, pageinst, datakey
571 sub wizard_get_data_value()
573 local ($pagename, $pageinst, $datakey, %hash);
574 ($pagename, $pageinst, $datakey) = @_;
575 %hash = &wizard_get_data($pagename, $pageinst);
576 return ($hash{"$datakey"});
579 # Gets data values for all page insts associated with a pagename
581 # Parameters: pagename, datakey
583 sub wizard_get_data_values()
585 local ($pagename, $datakey, @allinsts, $instfile, $pageinst, $value);
586 ($pagename, $datakey) = @_;
587 # get all matching instance files...
588 @allinsts = &list_wizard_datafiles($pagename);
590 foreach $instfile (@allinsts) {
591 $instfile =~ /${pagename}\.([^\.]*)/;
593 $value = &wizard_get_data_value($pagename, $pageinst, $datakey);
594 push (@values, $value);
599 # Read in wizard string, create internal representation (wizard hash).
601 # Parameters: wizard_string;
604 local ($wizard_string, @wizard_array, $pagenum, %wizard, $wiz_elt);
605 $wizard_string = $_[0];
606 @wizard_array = split(/;/, $wizard_string);
608 foreach $wiz_elt (@wizard_array) {
609 if ($wiz_elt =~ /\s*page\s*=\s*([^,\s]*)\s*,\s*min\s*=\s*([^,\s]*)\s*,\s*max\s*=\s*(.+)/) {
610 # standard wizard element
611 $wizard{'pages'}->[$pagenum]->{'pagename'} = $1;
612 $wizard{'pages'}->[$pagenum]->{'min_datafiles'} = $2;
613 $wizard{'pages'}->[$pagenum]->{'max_datafiles'} = $3;
614 $wizard{'pages'}->[$pagenum]->{'pagenum'} = $pagenum;
615 $pagenum = $pagenum + 1;
616 } elsif ($wiz_elt =~ /\s*submit\s*=\s*(\S+)/) {
617 # submit cgi script name
618 $wizard{'submit'} = $1;
620 &error("Syntax error in wizard specification: $wiz_elt");
626 sub get_wizard_info_by_name()
628 local ($wizref, $pagename, @wizard_pages, $page);
629 ($wizref, $data, $pagename) = @_;
630 @wizard_pages = @{$wizref->{'pages'}};
631 if ($data eq "pages") {
632 return @wizard_pages;
633 } elsif ($data eq "submit") {
634 return $wizref->{$data};
636 foreach $page (@wizard_pages) {
637 if ($pagename eq "$page->{'pagename'}") {
638 return $page->{$data};
642 &error("Data $data not found for wizard. Pagename: $pagename");
645 sub get_wizard_info_by_page()
647 local ($wizref, $data, $pagenum);
648 ($wizref, $data, $pagenum) = @_;
649 @wizard_pages = @{$wizref->{'pages'}};
650 return $wizard_pages[$pagenum]->{$data};
653 # list all files matching pattern and ending in .wizdata
655 # Parameters: filematch_pattern
657 sub list_wizard_datafiles()
659 local($filematch, $f,@filelist);
661 opendir(DIR, $module_config_directory);
662 foreach $f (readdir(DIR)) {
663 if ($f =~ /^$filematch.*\.wizdata/) {
664 push(@filelist, "$module_config_directory/$f");