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1#!/usr/bin/perl
2
3#---------------
4#
5#    FreeCheck - a free check printing application released
6#                under the GNU General Public Licene.
7#
8#    Copyright (C) 2000 Eric Sandeen (sandeen-freecheck@sandeen.net)
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.
14#
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.
19#
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
22#    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23#
24#---------------
25
26###########################################
27# WARNING WARNING WARNING WARNING WARNING #
28###########################################
29# THIS CODE EXECUTES AT LEAST ONE EXTERNAL PROGRAM, BASED ON
30# STRINGS PASSED IN FROM THE FORM.  A FEEBLE EFFORT HAS BEEN
31# MADE TO SANITIZE THOSE STRINGS, BUT THERE COULD STILL BE
32# A SECURITY RISK HERE.  YOU HAVE BEEN WARNED
33##########################################
34
35# This script will generate a form that allows users to fill out information to
36# be printed on checks, and they get back either a PostScript or a PDF document.
37# Currently, the freecheck script and config files need to be in the same dir as
38# the CGI.  If you want to generate PDFs, you need GhostScript.  You also really
39# need the 6.x series, or the PDFs will look horrible, and checks printed almost
40# certainly will not be machine readable.
41
42# The freecheck executable script, and the freecheck config file
43# (freecheck.cfg) should be in the same dir as this script.
44
45use CGI qw(:standard);
46
47# The path to the GhostScript executable, with escaped "/"s
48$GS = "\/usr\/bin\/gs";
49
50# Parameters to GhostScript to generate PDFs (trailing "-" means STDIN
51$PDFOptions = "-q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile=- -";
52
53
54# Get the cookie to set the defaults, if it's there...
55%pairs_hash = cookie('FreeCheck');
56
57# If it's not there, set minimum defaults so the main script won't bonk
58if (!%pairs_hash) {
59	%pairs_hash = (	"NumPages", "1",
60			"PrintCheckBody", "true",
61			"PrintMICRLine", "true",
62			"CheckNumber", "100");
63}
64
65# If we have no parameters passed, generate the initial page with default vals
66# Those defaults might be from a cookie (above) if one has been set.
67if (!param()) {
68	print header;
69	print start_html('FreeCheck Online'),
70	#"Cookie:",br,
71	#%pairs_hash,
72	h1('FreeCheck'),
73	"A free check printing utility",
74	br,
75	"Version 0.30",
76	br,
77	"Copyright (C) 2000 Eric Sandeen (sandeen-freecheck @ sandeen.net)",
78	hr,
79	"WARNING - unless you're brave, treat this application as a
80	proof-of-concept, rather than a useful utility.  I have not
81	had a chance to test this stuff with a bank yet, and I'm also
82	a bit concerned about the accuracy during conversion to 
83	PDF.  Just don't go paying your rent with this yet, ok?  :)",
84	hr,
85	start_form,
86	submit(	-name=>"Submit",
87		-label=>" Get my checks! "),
88	h2('Check Information'),
89	h3('Account Holder Information'),
90
91	textfield(	-name=>'Name1',
92			-default=>$pairs_hash{"Name1"},
93			-maxlength=>50),
94	" Name 1", br,
95
96	textfield(	-name=>'Name2',
97			-default=>$pairs_hash{"Name2"},
98			-maxlength=>50),
99	" Name 2", br,
100
101	textfield(	-name=>'Address1',
102			-default=>$pairs_hash{"Address1"},
103			-maxlength=>50),
104	" Address Line 1", br,
105
106	textfield(	-name=>'Address2',
107			-default=>$pairs_hash{"Address2"},
108			-maxlength=>50),
109	" Address Line 2", br,
110
111	textfield(	-name=>'CityStateZip',
112			-default=>$pairs_hash{"CityStateZip"},
113			-maxlength=>50),
114	" City, State, Zip", br,
115
116	textfield(	-name=>'PhoneNumber',
117			-default=>$pairs_hash{"PhoneNumber"},
118			-maxlength=>50),
119	" Phone Number", br,
120
121	h3('MICR Line Information'),
122	"Pay close attention here - this is where you enter the MICR
123	 line at the bottom of your check.  For the following symbols,
124         use these characters:", p,
125
126	hr,
127	img {-src=>'/images/transit.gif'}, " = \"R\"", br,
128	img {-src=>'/images/onus.gif'}, " = \"P\"", br,
129	img {-src=>'/images/dash.gif'}, " = \"-\" (dash, or minus)", p,
130	"For spaces, enter \"S\"", p,
131	"For check numbers, enter a \"C\" for each check digit", p,
132	hr,
133
134	"Auxiliary On-Us field - Everything to the left of the leftmost ",
135	img {-src=>'/images/transit.gif'}, " symbol",  br,
136	em("Don't forget to include trailing spaces (\"S\")!"), br,
137	"This field may not be present on personal checks", br,
138
139	textfield(	-name=>'AuxOnUs',
140			-default=>$pairs_hash{"AuxOnUs"},
141			-maxlength=>50),
142
143	" Auxiliary On-Us field", p,
144	
145	"Transit / Routing Field - 9 numbers between, and including, the ",
146	img {-src=>'/images/transit.gif'}, " symbols",  br, 
147	
148	textfield(	-name=>'Routing',
149			-default=>$pairs_hash{"Routing"},
150			-size=>11, -maxlength=>11),
151
152	" Routing Field", p,
153
154	"On-Us field - everything to the right of the rightmost ",
155	img {-src=>'/images/transit.gif'}, " symbol",  br,
156	em("Don't forget to include leading spaces (\"S\")!"), br,
157
158	textfield(	-name=>'OnUs',
159			-default=>$pairs_hash{"OnUs"},
160			-maxlength=>50),
161
162	" On-Us field", p,
163
164	textfield(	-name=>'Fraction', 
165			-default=>$pairs_hash{"Fraction"},
166			-maxlength=>50), 
167
168	" Fraction (printed at top right of check)", br,
169
170	h3('Bank Information'),
171	textfield(	-name=>'BankName', 
172			-default=>$pairs_hash{"BankName"},
173			-maxlength=>50), 
174	" Bank Name", br,
175
176	textfield(	-name=>'BankAddr1', 
177			-default=>$pairs_hash{"BankAddr1"},
178			-maxlength=>50),
179	" Bank Address1", br,
180
181	textfield(	-name=>'BankAddr2', 
182			-default=>$pairs_hash{"BankAddr2"},
183			-maxlength=>50),
184	" Bank Address 2", br,
185
186	textfield(	-name=>'BankCityStateZip', 
187			-default=>$pairs_hash{"BankCityStateZip"},
188			-maxlength=>50),
189	" Bank City, State, Zip", br,
190
191	h2('Printing Options'),
192	textfield(	-name=>'CheckNumber', 
193			-default=>$pairs_hash{"CheckNumber"}, 
194			-size=>10, 
195			-maxlength=>10),
196	" Starting Check Number", 
197	br,
198
199	"Select check style: ",
200	popup_menu(	-name=>'CheckStyle',
201			-values=>['Normal','Quicken_Personal'],
202			-default=>$pairs_hash{"CheckStyle"}),
203	br,
204
205	"Select check blank: ",
206	popup_menu(	-name=>'CheckType',
207			-values=>['MVG3001','MVG1000','MVD1001'],
208			-default=>$pairs_hash{"CheckType"},
209			-labels=>{	'MVG3001'=>'VersaCheck MVG3001',
210					'MVG1000'=>'VersaCheck MVG1000',
211					'MVD1001'=>'VersaCheck MVD1001'}),
212        p,
213
214
215	checkbox(	-name=>'PrintCheckBody', 
216			-checked=>$pairs_hash{"PrintCheckBody"},
217			-value=>'true', 
218			-label=>' Print Check Body'), 
219	br,
220
221	checkbox(	-name=>'PrintMICRLine', 
222			-checked=>$pairs_hash{"PrintMICRLine"},
223			-value=>'true',
224			-label=>' Print MICR Line'),
225	br,
226
227	checkbox(	-name=>'Test',
228			-checked=>$pairs_hash{"Test"},
229			-value=>'true',
230			-label=>' Print voided test checks'),
231	p,
232
233	"Select Output Format:",
234	br,
235	em("Be sure to de-select \"Fit to Page\" when printing PDFs"),
236	br,
237	em("To view PostScript correctly, you must have the
238	    GnuMICR font installed locally"),
239	br,
240	radio_group(	-name=>'OutputType', 
241			-values=>['PDF', 'PostScript'],
242			-labels=>{'PDF'=>' PDF', 
243				  'PostScript'=>' PostScript'},
244			-default=>$pairs_hash{"OutputType"}, 
245			-linebreak=>'true'), 
246	br,
247
248	"Number of Pages to Print: ",
249	textfield(	-name=>'NumPages', 
250			-default=>$pairs_hash{"NumPages"},
251			-size=>2, 
252			-maxlength=>1),
253	p,
254
255	"Save information in a cookie?",
256	br,
257	em("Note: if you're security-paranoid, and you've entered real data,
258	this might not be a such a good idea at this point..."),
259	br,
260	radio_group(	-name=>'Cookie',
261		 	-values=>['ClearCookie', 'SetCookie'],
262			-default=>$pairs_hash{"Cookie"},
263		 	-labels=>{'ClearCookie'=>' Don\'t set, or clear',
264				 'SetCookie'=>' Set a cookie'},
265			-linebreak=>'true'),
266	br,
267	submit(	-name=>"Submit",
268		-label=>" Get my checks! "),
269	end_form,
270	em("If Netscape wants to save \"freecheck.cgi\" just rename it to
271	    \"mychecks.[pdf,ps]\" - I don't know why this happens"),
272	hr;
273	print end_html;
274}
275
276# If Submit button has been pressed , then process the values
277if (param("Submit")) {
278
279	# Get a hash of all the fields and their values
280	my @names = param();
281	$pairs_string = "";
282	foreach (@names) {
283		$name = $_;
284		$value = param($_);
285		#$pairs_string = $pairs_string . $_ . " $value\n";
286		$pairs_hash{$name} = $value;
287	}
288	# "Submit" is the only thing we don't want to store
289	delete $pairs_hash{"Submit"};
290	
291	# Deal with the form elements that didn't go in the hash:
292	$CheckStyle = param("CheckStyle");
293	$CheckType  = param("CheckType");
294
295	# For checkboxes, delete them from the hash/cookie if not checked
296	if ( param("PrintMICRLine") ne "true" ) {
297		$MICR = "--nomicr";
298		delete $pairs_hash{"PrintMICRLine"};
299	}
300
301	if ( param("PrintCheckBody") ne "true" ) {
302		$BODY = "--nobody";
303		delete $pairs_hash{"PrintCheckBody"};
304	}
305
306	if ( param("Test") eq "true") {
307		$TEST = "--test";
308	} else {
309		delete $pairs_hash{"Test"};
310	}
311
312	# Turn the hash into a string (this is a bit goofy, I guess...)
313	# We do it as a hash initially to make it easier to fill in the
314	# forms, above.
315	# This is what is passed to the check generation script
316
317	$pairs_string = "";
318	$NotDefs="Submit Cookie Test OutputType CheckStyle CheckType";
319	while ( ($name,$value) = each(%pairs_hash) ) {
320		unless ($NotDefs =~ /${name}/ ) {
321			$pairs_string = $pairs_string . "$name $value\n";
322		}
323	}
324
325	# Create the argument string
326	$arguments = "--checkstyle $CheckStyle --checktype $CheckType $MICR $BODY $TEST";
327
328        # This is where we should set the next check number to be printed,
329        # if we knew how many checks per page we had... any good way
330        # to do this....? For now, we'll just set things up semi-manually
331
332	%ChecksPerPage =
333	("MVG3001", "3", "MVG1000", "1", "MVD1001", "1");
334
335	$NextCheckNumber = param("CheckNumber") +
336			param("NumPages") *
337			$ChecksPerPage{param("CheckType")};
338
339	$pairs_hash{"CheckNumber"} = $NextCheckNumber;
340
341	# Sanitize $pairs_string and $arguments
342	# Let's not go spawning any new shells (this is minimal security...)
343	# Also checks for SSI strings
344
345	# Look for SSI
346	if ($pairs_string =~ /\<\!--\#(.*)\s+(.*)\s?=\s?(.*)--\>/s) {
347		kill_input();
348	}
349
350	if ($arguments =~ /\<\!--\#(.*)\s+(.*)\s?=\s?(.*)--\>/s) {
351		kill_input();
352	}
353
354	# Look for shell metachars
355	if ($pairs_string =~ /[;><\*`\|]/s) {
356		kill_input();
357	}
358
359	if ($arguments =~ /[;><\*`\|]/s) {
360		kill_input();
361	}
362
363	if ( param("Cookie") eq "SetCookie" ) {
364		$cookie = cookie(	-name=>'FreeCheck',
365					-value=>\%pairs_hash,
366					-expires=>'+6M',
367					-path=>script_name(),
368					-domain=>server_name());
369	} elsif ( param("Cookie") eq "ClearCookie" ) {
370		$cookie = cookie(	-name=>'FreeCheck',
371					-value=>'',
372					-expires=>'+1m',
373					-path=>script_name(),
374					-domain=>server_name());
375	}
376
377	# Generate the actual output.  
378	# The PDF thing might become an option in the main script
379	# soon...
380	###########################################
381	# WARNING WARNING WARNING WARNING WARNING #
382	###########################################
383	# THIS CODE EXECUTES AT LEAST ONE EXTERNAL PROGRAM, BASED ON
384	# STRINGS PASSED IN FROM THE FORM.  A FEEBLE EFFORT HAS BEEN
385	# MADE TO SANITIZE THOSE STRINGS, BUT THERE COULD STILL BE 
386	# A SECURITY RISK HERE.  YOU HAVE BEEN WARNED
387
388	if (param("OutputType") eq "PDF") {
389		$PDFConvert = "\| $GS $PDFOptions";
390	}
391
392	#print (`.\/freecheck --cgi \"$pairs_string\" $arguments \| $GS $PDFConvert`);
393	# This is just the postscript result, or the error:
394	$Result = `.\/freecheck --cgi \"$pairs_string\" $arguments`;
395
396	if (length($Result) < 500 ) { # Anything this short is an error...
397		print header;
398		print start_html("We encountered an error...");
399		print h1("There are some errors on your form:");
400		# HTML-ify the result ( \n to <br> )
401		$Result =~ s/\n/<br>/gsm;
402		print $Result;
403		print br;
404		print "Press the Back button on your browser to fix them...";
405		print p;
406		print em("If you select \"Print voided test checks\" then
407			  MICR consistency checking will not be performed");
408		print end_html;
409		exit;
410	}
411	
412	# Otherwise, generate the apropriate header...
413	# And send the data
414	if (param("OutputType") eq "PDF") {
415		print header(	-type=>'application/pdf',
416				-attachment=>'mychecks.pdf',
417				-cookie=>$cookie);
418
419	# This is bad... running the script a 2nd time... must be a better
420	# way.  Like open(PDF, "|$GS $PDFConvert
421	#open (PDF, "| $PDFConvert");
422	#print PDF $Result;
423	#close(PDF);
424
425	print (`.\/freecheck --cgi \"$pairs_string\" $arguments \| $GS $PDFOptions`);
426	} else {
427		print header(	-type=>'application/postscript',
428				-attachment=>'mychecks.ps',
429				-cookie=>$cookie);
430
431		print $Result;
432	}
433	
434	exit;
435}
436
437sub kill_input {
438	print header;
439	print start_html("Problem with those strings...");
440	print "You seem to have some shell metacharacters in your ";
441	print "entered strings.  Sorry, you can't do that...";
442	print p;
443	print "Please get those funky things out of your form, and try again";
444	print p;
445	print "You can hit the back button to go back to your form.";
446	print end_html;
447	exit;
448}
449

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