.

.gitignore

@@ -1,3 +1,5 @@
 .DS_Store
 ._.DS_Store
 *.class
+wordsearch.war
+wordsearch.jar

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2018 Matthew Slowe
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

Makefile

@@ -1,31 +1,34 @@
 JAVA  = /usr/bin/java
-# JAVAFLAGS = -version # -classpath $(LIBS)
+LIBS = .:war/WEB-INF/lib/commons-lang.jar:war/WEB-INF/lib/sqlite-jdbc.jar
 JAVAC = /usr/bin/javac
-JFLAGS = -g # -classpath $(LIBS)
+JFLAGS = -g -classpath $(LIBS)
 
-SRCS = uk/org/mafoo/wordsearch/GridFactory.java \
-	uk/org/mafoo/wordsearch/Bounds.java \
-	uk/org/mafoo/wordsearch/CouldNotPlaceWordException.java \
-	uk/org/mafoo/wordsearch/Direction.java \
-	uk/org/mafoo/wordsearch/DistributedRandomNumberGenerator.java
+SRCS = uk/org/mafoo/wordsearch/CouldNotPlaceWordException.java \
+       uk/org/mafoo/wordsearch/Bounds.java \
+       uk/org/mafoo/wordsearch/GridFactory.java \
+       uk/org/mafoo/wordsearch/DistributedRandomNumberGenerator.java \
+       uk/org/mafoo/wordsearch/Direction.java
+
+JSPS = $(wildcard war/*.jsp war/*.css war/WEB-INF/jspf/*.jspf)
 
 OBJS = ${SRCS:.java=.class}
 
 .SUFFIXES: .java .class
 
-all: build wordsearch.jar
-
-run: all
-	$(JAVA) uk.org.mafoo.wordsearch.GridFactory 30 30
-
-.java.class:
-	$(JAVAC) $(JFLAGS) $<
-
-build: $(OBJS)
+.PHONY: default clean
+default: wordsearch.war
 
 clean:
 	rm -f $(OBJS) wordsearch.jar wordsearch.war
 
-wordsearch.jar: build
+.java.class:
+	$(JAVAC) $(JFLAGS) $<
+
+wordsearch.jar: $(OBJS)
 	jar cf $@ $(OBJS)
-	cp wordsearch.jar war/WEB-INF/lib
+
+war/WEB-INF/lib/wordsearch.jar: wordsearch.jar
+	cp $< $@
+
+wordsearch.war: war/WEB-INF/lib/wordsearch.jar  $(JSPS)
+	jar -cvf $@ -C war .

README.md

@@ -12,15 +12,4 @@ A simple ```Makefile``` is provided:
 $ make
 ```
 
-Once built, you need to make a "war" file to deploy to your J2EE container (tested on Tomcat)
-
-```
-$ cd war && jar cfv ../wordsearch.war .
-```
 Then deploy your war file :-)
-
-Alternatively you can test-run the engine...
-```
-$ make run <wordlist.txt
-```
-

schema.sql

@@ -0,0 +1 @@
+CREATE TABLE grids (id integer primary key, ts timestamp default current_timestamp, remotehost varchar, input, size_x int, size_y int, simple tinyint, result varchar);

src/Makefile

@@ -1,12 +0,0 @@
-CC=gcc
-CFLAGS=-DDEBUG_GRID_MAIN -std=c99 -g
-DEPS=dir.o rnd.o grid.o
-
-wordsearch: $(DEPS)
-	$(CC) -o wordsearch $(DEPS) $(CFLAGS)
-
-%.o: %.c 
-	$(CC) -c -o $@ $< $(CFLAGS)
-
-clean:
-	rm $(DEPS)

src/dir.c

@@ -1,39 +0,0 @@
-#include "dir.h"
-#include "rnd.h"
-
-int directions[] = {
-	DIRECTION_N,
-	DIRECTION_NE,
-	DIRECTION_E,
-	DIRECTION_SE,
-	DIRECTION_S,
-	DIRECTION_SW,
-	DIRECTION_W,
-	DIRECTION_NW
-};
-
-int get_direction(int simple)
-{
-	if (simple) {
-		if (random_number(0, 1) == 0) {
-			return DIRECTION_E;
-		} else {
-			return DIRECTION_S;
-		}
-	} else {
-		return directions[random_number(0, NUM_DIRECTIONS)];
-	}
-}
-
-#ifdef DEBUG_DIR_MAIN
-#include <stdio.h>
-
-int main()
-{
-	int n = 32;
-	while (--n > 0) {
-		printf("%d\n", get_direction(1));
-	}
-	return 0;
-}
-#endif

src/dir.h

@@ -1,19 +0,0 @@
-#ifndef WORDSEARCH_DIR
-#define WORDSEARCH_DIR
-
-enum direction {
-	DIRECTION_N,
-	DIRECTION_NE,
-	DIRECTION_E,
-	DIRECTION_SE,
-	DIRECTION_S,
-	DIRECTION_SW,
-	DIRECTION_W,
-	DIRECTION_NW
-};
-
-#define NUM_DIRECTIONS 8
-
-int get_direction(int simple);
-
-#endif

src/grid.c

@@ -1,197 +0,0 @@
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <stdarg.h>
-#include <ctype.h>
-
-#include "rnd.h"
-#include "dir.h"
-#include "grid.h"
-
-enum exitcodes {
-	EXIT_WORDTOOLONG,
-};
-
-bounds *get_bounds(int height, int width, enum direction direction, int length)
-{
-	if (length > height || length > width) {
-		return NULL;
-	}
-
-	length--;
-
-	bounds *b = (bounds *) malloc(sizeof(bounds));
-
-	b->min_x = 0;
-	b->max_x = width-1;
-	b->min_y = 0;
-	b->max_y = height-1;
-	if (direction == DIRECTION_N ||
-	    direction == DIRECTION_NE || direction == DIRECTION_NW) {
-		b->min_y = length;
-	}
-
-	if (direction == DIRECTION_W ||
-	    direction == DIRECTION_NW || direction == DIRECTION_SW) {
-		b->min_x = length;
-	}
-
-	if (direction == DIRECTION_E ||
-	    direction == DIRECTION_NE || direction == DIRECTION_SE) {
-		b->max_x = width - length;
-	}
-
-	if (direction == DIRECTION_S ||
-	    direction == DIRECTION_SW || direction == DIRECTION_SE) {
-		b->max_y = height - length;
-	}
-
-	return b;
-}
-
-int move_x(int x, enum direction d) {
-	if(
-			d == DIRECTION_E  ||
-			d == DIRECTION_NE ||
-			d == DIRECTION_SE
-	  ) {
-		x++;
-	} else if (
-			d == DIRECTION_W  ||
-			d == DIRECTION_NW ||
-			d == DIRECTION_SW
-		  ) {
-		x--;
-	}
-
-	return x;
-}
-
-int move_y(int y, enum direction d) {
-	if(
-			d == DIRECTION_N  ||
-			d == DIRECTION_NE ||
-			d == DIRECTION_NW
-	  ) {
-		y--;
-	} else if (
-			d == DIRECTION_S  ||
-			d == DIRECTION_SE ||
-			d == DIRECTION_SW
-		  ) {
-		y++;
-	}
-
-	return y;
-}
-
-char **make_grid(char **words, int height, int width, int simple, int count)
-{
-	char **grid = init_grid(NULL, height, width);
-	for(int i=0; i<count; i++) {
-		int tries = 0;
-		int placed = 0;
-		while(tries++ < WORDSEARCH_MAXTRIES && placed == 0) {
-			if(place_word(words[i], grid, height, width, simple)) {
-				placed = 1;
-			}
-		}
-	}
-	return grid;
-}
-
-int place_word(char *word, char **grid, int height, int width, int simple)
-{
-	int dir = get_direction(simple);
-	bounds *b;
-
-	if (b = get_bounds(height, width, dir, strlen(word))) {
-		/* word will probably fit... */
-		int x, y;
-		x = random_number(b->min_x, b->max_x);
-		y = random_number(b->min_y, b->max_y);
-
-		char** tempgrid = init_grid(grid, height, width);
-		/* Now we have two copies of the grid, try to place the word... */
-		int i;
-		for(i=0; i<strlen(word); i++) {
-			if(!isalpha(word[i])) continue;
-			if(tempgrid[y][x] != '_') {
-				if(tempgrid[y][x] != word[i]) {
-					/* Failed to place word */
-					free_grid(tempgrid, height);
-					return 0;
-				} else {
-					/* word crossed ok! */
-				}
-			} else {
-				tempgrid[y][x] = word[i];
-			}
-
-			x = move_x(x, dir);
-			y = move_y(y, dir);
-		}
-
-		free_grid(grid, height);
-		free(b);
-		grid = tempgrid;
-		return 1;
-	} else {
-		/* word can't fit */
-		printf("[ERR] Word too long to place in this grid: %s\n", word);
-		exit(EXIT_WORDTOOLONG);
-	}
-
-}
-
-/* Clones or creates an empty grid - pass NULL in as old to get an empty grid */
-char **init_grid(char** old, int height, int width)
-{
-	int row, cell;
-	char **new = malloc(height * sizeof(char*));
-
-	for (row=0; row < height; row++) {
-		new[row] = malloc(width * sizeof(char));
-		for (cell=0; cell < width; cell++) {
-			if(old) {
-				new[row][cell] = old[row][cell];
-			} else {
-				new[row][cell] = '_';
-			}
-		}
-	}	
-
-	return new;
-}
-
-void free_grid(char** grid, int height) {
-	for (int i=0; i<height; i++) {
-		free(grid[i]);
-	}
-	free(grid);
-}
-
-void print_grid(char** grid, int height) {
-	for(int i=0; i<height; i++) {
-		if(grid[i] == NULL) {
-			printf("row error\n");
-		} else {
-			printf("%s\n", grid[i]);
-		}
-	}
-}
-
-#ifdef DEBUG_GRID_MAIN
-#include <stdio.h>
-int main()
-{
-	char *words[4] = {
-		"test",
-		"word",
-		"longer",
-		"verylong"
-	};
-	char **grid = make_grid(words, 10, 10, 0, 4);
-	print_grid(grid, 4);
-}
-#endif

src/grid.h

@@ -1,26 +0,0 @@
-#ifndef WORDSEARCH_GRID
-#define WORDSEARCH_GRID
-
-#define WORDSEARCH_MAXTRIES 500
-
-char **make_grid(char **words, int height, int width, int simple, int count);
-
-typedef struct bounds {
-	int min_y;
-	int max_y;
-	int min_x;
-	int max_x;
-} bounds;
-
-/* returns NULL if cannot fit word; caller needs to free() the response */
-bounds *get_bounds(int height, int width, enum direction direction, int length);
-
-int place_word(char *word, char **grid, int height, int width, int simple);
-
-char **init_grid(char** old, int height, int width);
-void free_grid(char** grid, int height);
-int move_x(int x, enum direction d);
-int move_y(int y, enum direction d);
-void print_grid(char** grid, int height);
-
-#endif

src/rnd.c

@@ -1,90 +0,0 @@
-#include <stdlib.h>
-#include <stdio.h>
-#include <time.h>
-
-#include "rnd.h"
-
- /* https://www.math.cornell.edu/~mec/2003-2004/cryptography/subs/frequencies.html */
-
-#define ALPHABET_SIZE 26
-#define RND_MAXINT 10000
-
-struct letter_frequency {
-	int p;			/* pegged to 10000 rather than 1 */
-	char c;
-} letter_frequencies[] = {
-	{
-	7, 'Z'}, {
-	10, 'J'}, {
-	11, 'Q'}, {
-	17, 'X'}, {
-	69, 'K'}, {
-	111, 'V'}, {
-	149, 'B'}, {
-	182, 'P'}, {
-	203, 'G'}, {
-	209, 'W'}, {
-	211, 'Y'}, {
-	230, 'F'}, {
-	261, 'M'}, {
-	271, 'C'}, {
-	288, 'U'}, {
-	398, 'L'}, {
-	432, 'D'}, {
-	592, 'H'}, {
-	602, 'R'}, {
-	628, 'S'}, {
-	695, 'N'}, {
-	731, 'I'}, {
-	768, 'O'}, {
-	812, 'A'}, {
-	910, 'T'}, {
-1202, 'E'},};
-
-/* from http://stackoverflow.com/questions/822323/how-to-generate-a-random-number-in-c */
-int random_number(int min_num, int max_num)
-{
-	static int initialised = 0;
-	int result = 0;
-	int low_num = 0;
-	int hi_num = 0;
-	if (min_num < max_num) {
-		low_num = min_num;
-		hi_num = max_num + 1;	// this is done to include max_num in output.
-	} else {
-		low_num = max_num + 1;	// this is done to include max_num in output.
-		hi_num = min_num;
-	}
-	if (!initialised) {
-		srand(time(NULL));
-		initialised = 1;
-	}
-	result = (rand() % (hi_num - low_num)) + low_num;
-	return result;
-}
-
-char get_random_letter()
-{
-	int rnd = random_number(0, RND_MAXINT);
-	for (int i = 0; i < ALPHABET_SIZE; i++) {
-		if (rnd < letter_frequencies[i].p) {
-			return letter_frequencies[i].c;
-		}
-		rnd -= letter_frequencies[i].p;
-	}
-	return '\0';
-}
-
-#ifdef DEBUG_RND_MAIN
-#include <stdio.h>
-
-int main()
-{
-	int n = 32;
-	while (--n > 0) {
-		printf("%c", get_random_letter());
-	}
-	return 0;
-}
-
-#endif

src/rnd.h

@@ -1,7 +0,0 @@
-#ifndef WORDSEARCH_RND
-#define WORDSEARCH_RND
-
-char get_random_letter();
-int random_number(int min_num, int max_num);
-
-#endif

test.txt

@@ -0,0 +1,9 @@
+Kitchen
+Lounge
+Study
+Ballroom
+Conservatory
+Billiard Room
+Library
+Hall
+Dining Room

uk/org/mafoo/wordsearch/GridFactory.java

@@ -6,7 +6,7 @@ import java.util.*;
 public class GridFactory {
 
 	static Random rnd = new Random();
-	static final int MAX_TRIES = 500;
+	static final int MAX_TRIES = 5000;
 
 	/* https://www.math.cornell.edu/~mec/2003-2004/cryptography/subs/frequencies.html */
 	static DistributedRandomNumberGenerator drng = new DistributedRandomNumberGenerator();
@@ -37,7 +37,7 @@ public class GridFactory {
 		drng.addNumber(23, 0.0017d); // X
 		drng.addNumber(24, 0.0211d); // Y
 		drng.addNumber(25, 0.0007d); // Z
-	}	
+	}
 
 	private static char[] chars = new char[] {
 		'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'
@@ -77,10 +77,10 @@ public class GridFactory {
 
 		Bounds b = new Bounds(0, height, 0, width);
 		length--; // arrays, duh
-		
+
 		if(
-			direction == Direction.N  || 
-			direction == Direction.NE || 
+			direction == Direction.N  ||
+			direction == Direction.NE ||
 			direction == Direction.NW
 			) {
 			b.min_y = length;
@@ -158,6 +158,10 @@ public class GridFactory {
 		return makeGrid(words, height, width, false, true);
 	}
 
+	public static char[][] makeGrid(List<String> words, int height, int width, boolean simple) {
+		return makeGrid(words, height, width, simple, true);
+	}
+
 	public static char[][] makeGrid(List<String> words, int height, int width, boolean simple, boolean fill) {
 		char[][] grid = new char[height][width];
 
@@ -184,7 +188,7 @@ public class GridFactory {
 		if(fill) {
 			for (int y=0; y<height; y++) {
 				for (int x=0; x<width; x++) {
-					if (grid[y][x] == Character.UNASSIGNED) 
+					if (grid[y][x] == Character.UNASSIGNED)
 						// grid[y][x] = '_';
 						grid[y][x] = getRandomChar();
 				}
@@ -198,7 +202,7 @@ public class GridFactory {
 		Direction direction = getDirection(simple);
 		Bounds b = getBounds(grid.length, grid[0].length, direction, word.length());
 		// System.out.println("[" + word + "] bounds: " + b);
-		
+
 		int x = rnd.nextInt(b.max_x - b.min_x) + b.min_x;
 		int y = rnd.nextInt(b.max_y - b.min_y) + b.min_y;
 
@@ -216,7 +220,7 @@ public class GridFactory {
 			tempgrid[y][x] = c;
 			x = move_x(x, direction);
 			y = move_y(y, direction);
-		
+
 		}
 		return tempgrid;
 	}

war/WEB-INF/jspf/footer.jspf

@@ -0,0 +1,3 @@
+<div id="footer">
+Generated at: https://bombadil.mafoo.org.uk/wordsearch/
+</div>

war/WEB-INF/web.xml

@@ -10,4 +10,20 @@
 	Wordsearch building app
     </description>
 
-</web-app> 
+    <context-param>
+        <param-name>sqlite_db</param-name>
+        <param-value>/tmp/wordsearch.db</param-value>
+    </context-param>
+
+    <security-constraint>
+        <web-resource-collection>
+            <web-resource-name>dump</web-resource-name>
+            <url-pattern>/dump.jsp</url-pattern>
+        </web-resource-collection>
+        <auth-constraint>
+            <role-name>admin</role-name>
+        </auth-constraint>
+    </security-constraint>
+
+
+</web-app>

war/about.jsp

@@ -3,6 +3,7 @@
 <head>
 	<title>Wordsearch Builder: About</title>
 	<link rel="stylesheet" type="text/css" href="base.css" />
+	<link href="https://fonts.googleapis.com/css2?family=Fira+Mono:wght@400;500&family=Roboto:wght@500&display=swap" rel="stylesheet">
 </head>
 
 <body>

war/base.css

@@ -1,5 +1,5 @@
-body { 
-	font-family: sans-serif; 
+body {
+	font-family: 'Roboto', sans-serif;
 }
 
 .tooltip {
@@ -14,17 +14,16 @@ table, th, td {
 }
 
 table#grid td {
-	font-family: monospace; 
-	font-size: 22px;
+	font-family: 'Fira Mono', monospace;
+	font-size: 14pt;
 }
 
 #wrapper {
-	width: 80%;
-	margin: 0 auto 60px auto;
+	align-content: center;
 }
-
 #wordsearch {
 	float: left;
+	margin-bottom: 24px;
 }
 
 #words {
@@ -35,8 +34,11 @@ table#grid td {
 #footer {
 	position:absolute;
 	bottom:0;
-	width:100%;
-	height:60px;   /* Height of the footer */
+}
+
+textarea#textarea_words {
+	font-family: 'Fira Mono', monospace;
+	font-size: 10pt;
 }
 
 @media only print {

war/build.jsp

@@ -3,11 +3,15 @@
 <head>
 	<title>Wordsearch builder</title>
 	<link rel="stylesheet" type="text/css" href="base.css" />
+	<link href="https://fonts.googleapis.com/css2?family=Fira+Mono:wght@400;500&family=Roboto:wght@500&display=swap" rel="stylesheet">
 </head>
 <%@ page import="uk.org.mafoo.wordsearch.*" %>
 <%@ page import="java.util.*" %>
 <%@ page import="org.apache.commons.lang.StringUtils" %>
 <%@ page import="org.apache.commons.lang.StringEscapeUtils" %>
+<%@ page import="java.sql.*" %>
+<%@ page import="org.sqlite.*" %>
+
 <%@ page errorPage="error.jsp" %>
 <%
 
@@ -21,24 +25,55 @@
 
 	List<String> words = new ArrayList<String>();
 	for ( String line : request.getParameter("words").split("\r\n")) {
-		words.add(line.trim());
+		words.add(line.trim().toLowerCase());
 	}
-  	Collections.sort(words);
+	Collections.sort(words);
 
-  	char[][] grid = GridFactory.makeGrid(words, height, width, simple);
+	Connection conn = DriverManager.getConnection(
+		"jdbc:sqlite:" + getServletContext().getRealPath("/WEB-INF/files/database.sqlite"));
+	PreparedStatement stmt = conn.prepareStatement(
+		"INSERT INTO grids (remotehost, input, size_x, size_y, simple) VALUES (?, ?, ?, ?, ?)",
+		Statement.RETURN_GENERATED_KEYS);
+	// PreparedStatement getlastid = conn.prepareStatement("select last_insert_rowid();");
+	PreparedStatement stmt2 = conn.prepareStatement("UPDATE grids SET result=? WHERE id=?");
 
-  	String csv = "";
+	stmt.setString(1, request.getRemoteHost());
+	stmt.setString(2, words.toString());
+	stmt.setInt(3, height);
+	stmt.setInt(4, width);
+	stmt.setBoolean(5, simple);
+	stmt.executeUpdate();
+	ResultSet record_id_rs = stmt.getGeneratedKeys();
+	int record_id = -1;
+	if(record_id_rs.next()){
+		record_id = record_id_rs.getInt(1);
+	}
+
+	// Actually generate the grid
+	char[][] grid = GridFactory.makeGrid(words, height, width, simple);
+
+	StringBuilder _csv = new StringBuilder();
+	for (char[] cs : grid) {
+		for(char c : cs) {
+			_csv.append(c);
+			_csv.append(",");
+		}
+		_csv.append("\r\n");
+	}
+
+	String csv = _csv.toString();
+
+	stmt2.setString(1, csv);
+	stmt2.setInt(2, record_id);
+	stmt2.executeUpdate();
+	conn.close();
 %>
 <body>
 <h1><%= name %></h1>
 <div class="noprint">
-	[ <a href="index.jsp">Start again</a> | <a id='csvdownload'>Download CSV</a> ]
+	[ <a href="index.jsp">Start again</a> | <a id='csvdownload' href="data:text/csv;base64,<%= Base64.getEncoder().encodeToString(csv.getBytes()) %>">Download CSV</a> ]
 </div>
-<script>
-    var csv = '<%= csv %>';
-    var csvdownload = document.getElementById('csvdownload');
-    csvdownload.href='data:text/csv;base64,' + btoa(csv);
-</script>
+
 </div>
 
 <div id="wrapper">
@@ -47,18 +82,18 @@
 	<table id="grid">
 	<% for(char[] row : grid) { %>
 		<tr>
-			<% for(char c : row) { 
+			<% for(char c : row) {
 				csv += "" + c + ',';
 			%>
 			<td class="cell"><%= c %></td>
 			<% 	} %>
 		</tr>
-	<% 
+	<%
 		csv += "\\n";
 		}
 	%>
 	</table>
-</div> <!-- end wordsearch --> 
+</div> <!-- end wordsearch -->
 
 <div id="words">
 	<h2>Words</h2>
@@ -68,7 +103,7 @@
 		<% } %>
 		</ul>
 </div> <!-- end words -->
-</div> <!-- end wrapper --> 
+</div> <!-- end wrapper -->
 <br />
 <br />
 <%@include file="/WEB-INF/jspf/footer.jspf" %>

war/db.jsp

@@ -0,0 +1,53 @@
+<%@ page contentType="text/html" %>
+<%@ page import="java.sql.*" %>
+<%@ page import="org.sqlite.*" %>
+
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <title>Database dump</title>
+    </head>
+    <body>
+        <h1>Database stats</h1>
+        <%
+        Connection conn =
+        DriverManager.getConnection("jdbc:sqlite:" + getServletContext().getRealPath("/WEB-INF/files/database.sqlite"));
+        Statement stmt = conn.createStatement();
+        ResultSet rs = stmt.executeQuery("select * from sqlite_master where type='table' and name='grids';");
+        if(rs.next()) {
+            // we have a row and are probably ok
+        } else {
+            // Initialise the schema
+            PreparedStatement pstmt = conn.prepareStatement("CREATE TABLE grids (id integer primary key, ts timestamp default current_timestamp, remotehost varchar, input, size_x int, size_y int, simple tinyint, result varchar);");
+            pstmt.execute();
+        }
+
+        rs.close();
+
+        PreparedStatement ps_count = conn.prepareStatement("SELECT COUNT(*) FROM grids");
+        PreparedStatement ps_last = conn.prepareStatement("SELECT max(ts) FROM grids;");
+
+        ResultSet rs_count = ps_count.executeQuery();
+        ResultSet rs_last = ps_last.executeQuery();
+        int count = -1;
+        String last = "unknown";
+        if(rs_count.next()) {
+            count = rs_count.getInt(1);
+        }
+        if(rs_last.next()) {
+            last = rs_last.getString(1);
+        }
+        rs_count.close();
+        rs_last.close();
+        %>
+
+        <ul>
+            <li>Number of grids generated: <%= count %></li>
+            <li>Last grid generated at: <%= last %></li>
+            <li>Path to db: <pre><%= getServletContext().getRealPath("/WEB-INF/files/database.sqlite") %></pre></li>
+        </ul>
+    </body>
+    <%
+        conn.close();
+    %>
+</html>

war/dump.jsp

@@ -0,0 +1,50 @@
+<%@ page contentType="text/html" %>
+<%@ page import="java.sql.*" %>
+<%@ page import="org.sqlite.*" %>
+
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <title>Database dump</title>
+    </head>
+    <body>
+        <table border="1">
+            <thead>
+                <th>id</th>
+                <th>timestamp</th>
+                <th>remotehost</th>
+                <th>input</th>
+                <th>size_x</th>
+                <th>size_y</th>
+                <th>simple</th>
+                <th>result</th>
+            </thead>
+            <tbody>
+                <%
+                Connection conn =
+                    DriverManager.getConnection("jdbc:sqlite:" + getServletContext().getInitParameter("sqlite_db"));
+                Statement stat = conn.createStatement();
+
+                ResultSet rs = stat.executeQuery("select * from grids;");
+
+                while (rs.next()) {
+                    out.println("<tr>");
+                    out.println("<td>" + rs.getString("id") + "</td>");
+                    out.println("<td>" + rs.getString("ts") + "</td>");
+                    out.println("<td>" + rs.getString("remotehost") + "</td>");
+                    out.println("<td><pre>" + rs.getString("input") + "</pre></td>");
+                    out.println("<td>" + rs.getInt("size_x") + "</td>");
+                    out.println("<td>" + rs.getInt("size_y") + "</td>");
+                    out.println("<td>" + rs.getInt("simple") + "</td>");
+                    out.println("<td><pre>" + rs.getString("result") + "</pre></td>");
+                    out.println("</tr>");
+                }
+
+                rs.close();
+                conn.close();
+                %>
+            </tbody>
+
+        </table>
+    </body>
+</html>

war/env.jsp

@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html>
+    <head></head>
+    <body>
+        <h1>Environment</h1>
+        <ul>
+            <li>You are connecting from: <%= request.getRemoteHost() %> (<%= request.getRemoteAddr() %>)</li>
+            <li>If present your X-Forwarded-For header is: <%= request.getHeader("X-Forwarded-For") %></li>
+        </ul>
+
+        <h2>Header dump</h2>
+        <pre>
+<%
+for (java.util.Enumeration<String> headers = request.getHeaderNames(); headers.hasMoreElements(); ) {
+    String h = headers.nextElement();
+%>
+    <%= h %>=<%= request.getHeader(h) %>
+<%
+}
+%>
+        </pre>
+    </body>

war/index.jsp

@@ -3,6 +3,7 @@
 <head>
 	<title>Wordsearch Builder</title>
 	<link rel="stylesheet" type="text/css" href="base.css" />
+	<link href="https://fonts.googleapis.com/css2?family=Fira+Mono:wght@400;500&family=Roboto:wght@500&display=swap" rel="stylesheet">
 </head>
 <body>
 <h1>Wordsearch Builder</h1>
@@ -11,7 +12,7 @@
 <h2>Words</h2>
 <form action="build.jsp" method="post">
 Name: <input type="text" size="25" name="name" value="Wordsearch"><br />
-<textarea name="words" rows="10">
+<textarea id="textarea_words" name="words" rows="10">
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