initial code commit

19 files changed, 726 insertions, 0 deletions

diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/exceptions/PDFIOException.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/exceptions/PDFIOException.java
new file mode 100644
index 00000000..57c1e7ab
--- /dev/null
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/exceptions/PDFIOException.java
@@ -0,0 +1,20 @@
+package at.gv.egiz.pdfas.common.exceptions;
+
+/**
+ * Created with IntelliJ IDEA.
+ * User: afitzek
+ * Date: 8/28/13
+ * Time: 12:04 PM
+ * To change this template use File | Settings | File Templates.
+ */
+public class PDFIOException extends PdfAsException {
+
+    public PDFIOException(String msgId) {
+        super(msgId);
+    }
+
+
+    public PDFIOException(String msgId, Throwable e) {
+        super(msgId, e);
+    }
+}
diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/exceptions/PdfAsException.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/exceptions/PdfAsException.java
new file mode 100644
index 00000000..e36aa082
--- /dev/null
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/exceptions/PdfAsException.java
@@ -0,0 +1,31 @@
+package at.gv.egiz.pdfas.common.exceptions;
+
+import at.gv.egiz.pdfas.common.messages.MessageResolver;
+
+public class PdfAsException extends Exception {
+	public PdfAsException() {
+        super();
+    }
+
+    public PdfAsException(String msgId) {
+        super(msgId);
+    }
+
+    public PdfAsException(String msgId, Throwable e) {
+        super(msgId, e);
+    }
+
+    @Override
+    public String getMessage() {
+        return localizeMessage(super.getMessage());
+    }
+
+    @Override
+    public String getLocalizedMessage() {
+        return localizeMessage(super.getMessage());
+    }
+
+    protected String localizeMessage(String msgId) {
+        return MessageResolver.resolveMessage(msgId);
+    }
+}
diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/exceptions/PdfAsSettingsException.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/exceptions/PdfAsSettingsException.java
new file mode 100644
index 00000000..431ffa5d
--- /dev/null
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/exceptions/PdfAsSettingsException.java
@@ -0,0 +1,20 @@
+package at.gv.egiz.pdfas.common.exceptions;
+
+/**
+ * Created with IntelliJ IDEA.
+ * User: afitzek
+ * Date: 9/10/13
+ * Time: 10:54 AM
+ * To change this template use File | Settings | File Templates.
+ */
+public class PdfAsSettingsException extends PdfAsException {
+
+    public PdfAsSettingsException(String msgId) {
+        super(msgId);
+    }
+
+
+    public PdfAsSettingsException(String msgId, Throwable e) {
+        super(msgId, e);
+    }
+}
diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/exceptions/package-info.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/exceptions/package-info.java
new file mode 100644
index 00000000..cfd6a993
--- /dev/null
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/exceptions/package-info.java
@@ -0,0 +1,8 @@
+/**
+ * 
+ */
+/**
+ * @author afitzek
+ *
+ */
+package at.gv.egiz.pdfas.common.exceptions;
\ No newline at end of file
diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/messages/MessageResolver.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/messages/MessageResolver.java
new file mode 100644
index 00000000..0bc1bab7
--- /dev/null
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/messages/MessageResolver.java
@@ -0,0 +1,42 @@
+package at.gv.egiz.pdfas.common.messages;
+
+import java.util.Locale;
+import java.util.ResourceBundle;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class MessageResolver {
+	private static final String messageResource = "resources.messages.common";
+    private static final String missingMsg = "Please add message ";
+
+    private static final Logger logger = LoggerFactory.getLogger(MessageResolver.class);
+
+    private static ResourceBundle bundle;
+
+    static {
+        ResourceBundle bundle = ResourceBundle.getBundle(messageResource);
+        if(bundle == null) {
+            logger.error("Failed to load resource bundle!!");
+            Runtime.getRuntime().exit(-1);
+        }
+    }
+
+    public static void forceLocale(Locale locale) {
+        bundle = ResourceBundle.getBundle(messageResource, locale);
+    }
+
+    public static String resolveMessage(String msgId) {
+        if(bundle == null) {
+            return missingMsg + msgId;
+        }
+        if(bundle.containsKey(msgId)) {
+            String value = bundle.getString(msgId);
+            if(value == null) {
+                return missingMsg + msgId;
+            }
+            return value;
+        }
+        return missingMsg + msgId;
+    }
+}
diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/messages/package-info.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/messages/package-info.java
new file mode 100644
index 00000000..0ac78c22
--- /dev/null
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/messages/package-info.java
@@ -0,0 +1,8 @@
+/**
+ * 
+ */
+/**
+ * @author afitzek
+ *
+ */
+package at.gv.egiz.pdfas.common.messages;
\ No newline at end of file
diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/package-info.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/package-info.java
new file mode 100644
index 00000000..58c99dad
--- /dev/null
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/package-info.java
@@ -0,0 +1,8 @@
+/**
+ * 
+ */
+/**
+ * @author afitzek
+ *
+ */
+package at.gv.egiz.pdfas.common;
\ No newline at end of file
diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/settings/IProfileConstants.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/settings/IProfileConstants.java
new file mode 100644
index 00000000..2e2ee024
--- /dev/null
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/settings/IProfileConstants.java
@@ -0,0 +1,65 @@
+package at.gv.egiz.pdfas.common.settings;
+
+/**
+ * Created with IntelliJ IDEA.
+ * User: afitzek
+ * Date: 9/10/13
+ * Time: 12:58 PM
+ * To change this template use File | Settings | File Templates.
+ */
+public interface IProfileConstants {
+    /**
+     * The settings key prefix for signature definitions. <code>"sig_obj."</code>
+     */
+    public static final String SIG_OBJ = "sig_obj.";
+
+    public static final String SIG_DATE = "SIG_DATE";
+
+    /**
+     * The settings key prefix for the signature table object definition
+     */
+    public static final String TABLE = "table.";
+
+    /**
+     * The settings value refering to a table
+     */
+    public final static String TYPE_TABLE = "TABLE";
+
+    /**
+     * The settings value refering to an image
+     */
+    public final static String TYPE_IMAGE = "i";
+
+    /**
+     * The settings value refering to a text caption
+     */
+    public final static String TYPE_CAPTION = "c";
+
+    /**
+     * The settings value refering to a text value
+     */
+    public final static String TYPE_VALUE = "v";
+
+    /**
+     * The settings key sub prefix getting the width of columns for a table
+     * definition
+     */
+    public final static String COLS_WITH = "ColsWidth";
+
+    /**
+     * The settings key sub prefix getting the style definition
+     */
+    public final static String STYLE = "Style";
+
+    public final static String PROFILE_VALUE = "value";
+
+    public final static String PROFILE_KEY = "key";
+
+    public final static String KEY_SEPARATOR = ".";
+    
+    public final static String INCLUDE = "include";
+    
+    public final static String CFG_DIR = "cfg";
+    public final static String CFG_FILE = "config.properties";
+    
+}
diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/settings/ISettings.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/settings/ISettings.java
new file mode 100644
index 00000000..9e3291d2
--- /dev/null
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/settings/ISettings.java
@@ -0,0 +1,13 @@
+package at.gv.egiz.pdfas.common.settings;
+
+import java.util.Map;
+import java.util.Vector;
+
+public interface ISettings {
+	public String getValue(String key);
+	public boolean hasValue(String key);
+	public boolean hasPrefix(String prefix);
+	public Map<String, String> getValuesPrefix(String prefix);
+	public Vector<String> getFirstLevelKeys(String prefix);
+	public String getWorkingDirectory();
+}
diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/settings/Settings.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/settings/Settings.java
new file mode 100644
index 00000000..da946215
--- /dev/null
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/settings/Settings.java
@@ -0,0 +1,124 @@
+package at.gv.egiz.pdfas.common.settings;
+
+import at.gv.egiz.pdfas.common.exceptions.PdfAsSettingsException;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.util.*;
+
+public class Settings implements ISettings, IProfileConstants{
+
+    private static final Logger logger = LoggerFactory.getLogger(Settings.class);
+
+    protected Properties properties = new Properties();
+
+    protected File workDirectory;
+    
+    public Settings(File workDirectory) {
+        try {
+        	this.workDirectory = workDirectory;
+            loadSettings(workDirectory);
+        } catch (PdfAsSettingsException e) {
+            logger.error(e.getMessage(), e);
+        }
+    }
+
+    public void loadSettings(File workDirectory) throws PdfAsSettingsException {
+        try {
+        	
+        	String configDir = workDirectory.getAbsolutePath() + File.separator + CFG_DIR;
+        	String configFile = configDir + File.separator + CFG_FILE;
+        	logger.debug("Loading cfg file: " + configFile);
+            properties.load(new FileInputStream(configFile));
+            
+            Map<String, String> includes = this.getValuesPrefix(INCLUDE);
+            
+            if(includes != null) {
+            	Iterator<String> includeIterator = includes.values().iterator();
+            	while(includeIterator.hasNext()) {
+            		String includeFile = configDir + File.separator + includeIterator.next();
+            		logger.debug("Loading included cfg file: " + includeFile);
+            		properties.load(new FileInputStream(includeFile));
+            	}
+            }
+            
+            logger.debug("Configured Properties:");
+            if(logger.isDebugEnabled()) {
+            	properties.list(System.out);
+            }
+            
+        } catch (IOException e) {
+            throw new PdfAsSettingsException("Failed to read settings!", e);
+        }
+    }
+
+    public String getValue(String key) {
+        return properties.getProperty(key);
+    }
+
+    public boolean hasValue(String key) {
+        return properties.containsKey(key);
+    }
+
+    public Map<String, String> getValuesPrefix(String prefix) {
+        Iterator<Object> keyIterator = properties.keySet().iterator();
+        Map<String, String> valueMap = new HashMap<String, String>();
+        while(keyIterator.hasNext()) {
+            String key = keyIterator.next().toString();
+
+            if(key.startsWith(prefix)) {
+                valueMap.put(key, properties.getProperty(key));
+            }
+        }
+
+        if(valueMap.isEmpty()) {
+            return null;
+        }
+
+        return valueMap;
+    }
+
+    public Vector<String> getFirstLevelKeys(String prefix) {
+        String mPrefix = prefix.endsWith(".")?prefix:prefix+".";
+        Iterator<Object> keyIterator = properties.keySet().iterator();
+        Vector<String> valueMap = new Vector<String>();
+        while(keyIterator.hasNext()) {
+            String key = keyIterator.next().toString();
+
+            if(key.startsWith(prefix)) {
+                int keyIdx = key.indexOf('.', mPrefix.length()) > 0 ?  key.indexOf('.', mPrefix.length()) : key.length();
+                String firstLevels = key.substring(0, keyIdx);
+                if(!valueMap.contains(firstLevels)) {
+                    valueMap.add(firstLevels);
+                }
+            }
+        }
+
+        if(valueMap.isEmpty()) {
+            return null;
+        }
+
+        return valueMap;
+    }
+
+	public boolean hasPrefix(String prefix) {
+		Iterator<Object> keyIterator = properties.keySet().iterator();
+        while(keyIterator.hasNext()) {
+            String key = keyIterator.next().toString();
+
+            if(key.startsWith(prefix)) {
+                return true;
+            }
+        }
+        return false;
+	}
+
+	public String getWorkingDirectory() {
+		return this.workDirectory.getAbsolutePath();
+	}
+
+}
diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/settings/SignatureProfileEntry.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/settings/SignatureProfileEntry.java
new file mode 100644
index 00000000..3df929b1
--- /dev/null
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/settings/SignatureProfileEntry.java
@@ -0,0 +1,39 @@
+package at.gv.egiz.pdfas.common.settings;
+
+public class SignatureProfileEntry {
+    private String key = null;
+    private String caption = null;
+    private String value = null;
+
+    public SignatureProfileEntry() {
+    }
+
+    public String getKey() {
+        return key;
+    }
+
+    public void setKey(String key) {
+        this.key = key;
+    }
+
+    public String getCaption() {
+        return caption;
+    }
+
+    public void setCaption(String caption) {
+        this.caption = caption;
+    }
+
+    public String getValue() {
+        return value;
+    }
+
+    public void setValue(String value) {
+        this.value = value;
+    }
+
+    @Override
+    public String toString() {
+        return getKey() + "[ " + getCaption() + " : " + getValue() + " ]";
+    }
+}
diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/settings/SignatureProfileSettings.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/settings/SignatureProfileSettings.java
new file mode 100644
index 00000000..46f2ed09
--- /dev/null
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/settings/SignatureProfileSettings.java
@@ -0,0 +1,121 @@
+package at.gv.egiz.pdfas.common.settings;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.*;
+
+public class SignatureProfileSettings implements IProfileConstants {
+
+    private static final Logger logger = LoggerFactory.getLogger(SignatureProfileSettings.class);
+
+    private Map<String, SignatureProfileEntry> profileInformations = new HashMap<String, SignatureProfileEntry>();
+
+    private Map<String, String> profileSettings = new HashMap<String, String>();
+
+    private String profileID;
+
+    public SignatureProfileSettings(String profileID, ISettings configuration) {
+        this.profileID = profileID;
+        String profilePrefix = SIG_OBJ + profileID + KEY_SEPARATOR;
+        String keysPrefix = profilePrefix + PROFILE_KEY;
+        String valuesPrefix = profilePrefix + PROFILE_VALUE;
+        String tablePrefix = profilePrefix + TABLE;
+
+        logger.debug("Reading Profile: " + profileID);
+        logger.debug("Keys Prefix: " + keysPrefix);
+        logger.debug("Values Prefix: " + valuesPrefix);
+        logger.debug("Table Prefix: " + tablePrefix);
+
+        Map<String, String> keys = configuration.getValuesPrefix(keysPrefix);
+        Map<String, String> values = configuration.getValuesPrefix(valuesPrefix);
+
+        Iterator<String> keyIterator = keys.keySet().iterator();
+
+        while(keyIterator.hasNext()) {
+            String key = keyIterator.next();
+            key = key.substring(key.lastIndexOf('.') + 1);
+            String valueKey = keys.get(keysPrefix + KEY_SEPARATOR + key);
+
+            String valueValue = values.get(valuesPrefix + KEY_SEPARATOR + key);
+
+
+            SignatureProfileEntry entry = new SignatureProfileEntry();
+            entry.setKey(key);
+            entry.setCaption(valueKey);
+            entry.setValue(valueValue);
+            profileInformations.put(key, entry);
+            logger.debug("   " + entry.toString());
+        }
+
+        // Find entries where only values exists
+        Iterator<String> valuesIterator = values.keySet().iterator();
+
+        while(valuesIterator.hasNext()) {
+            String key = valuesIterator.next();
+            key = key.substring(key.lastIndexOf('.') + 1);
+
+            String valueValue = values.get(valuesPrefix + KEY_SEPARATOR + key);
+
+            SignatureProfileEntry entry = profileInformations.get(key);
+            if(entry == null) {
+                entry = new SignatureProfileEntry();
+                entry.setKey(key);
+                entry.setCaption(null);
+                entry.setValue(valueValue);
+                profileInformations.put(key, entry);
+            }
+
+            logger.debug("   " + entry.toString());
+        }
+
+        Map<String, String> others = configuration.getValuesPrefix(profilePrefix);
+
+        Iterator<String> otherIterator = others.keySet().iterator();
+
+        while(otherIterator.hasNext()) {
+            String key = otherIterator.next();
+
+            logger.trace("Checking key " + key);
+            if( key.startsWith(keysPrefix) ||
+                key.startsWith(valuesPrefix) ||
+                key.startsWith(tablePrefix)) {
+                continue;
+            }
+
+            String value = others.get(key);
+            key = key.substring(key.lastIndexOf('.') + 1);
+
+            profileSettings.put(key, others.get(value));
+
+            logger.debug("   Settings: " + key + " : " + value);
+        }
+    }
+
+    public String getCaption(String key) {
+        SignatureProfileEntry entry = profileInformations.get(key);
+        if(entry != null) {
+            return entry.getCaption();
+        }
+        return null;
+    }
+
+    public String getValue(String key) {
+        SignatureProfileEntry entry = profileInformations.get(key);
+        if(entry != null) {
+            String value = entry.getValue();
+
+            if(value == null) {
+                // TODO: try to find default value for key!
+            }
+
+            return value;
+        }
+        // TODO: try to find default value for key!
+        return null;
+    }
+
+    public String getProfileID() {
+        return profileID;
+    }
+}
diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/settings/package-info.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/settings/package-info.java
new file mode 100644
index 00000000..c2b123e2
--- /dev/null
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/settings/package-info.java
@@ -0,0 +1,8 @@
+/**
+ * 
+ */
+/**
+ * @author afitzek
+ *
+ */
+package at.gv.egiz.pdfas.common.settings;
\ No newline at end of file
diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/DNUtils.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/DNUtils.java
new file mode 100644
index 00000000..429151ee
--- /dev/null
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/DNUtils.java
@@ -0,0 +1,34 @@
+package at.gv.egiz.pdfas.common.utils;
+
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+
+import javax.naming.InvalidNameException;
+import javax.naming.ldap.LdapName;
+import javax.naming.ldap.Rdn;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class DNUtils {
+	private static final Logger logger = LoggerFactory.getLogger(DNUtils.class);
+
+
+    public static Map<String, String> dnToMap(String dn) throws InvalidNameException {
+        Map<String, String> map = new HashMap<String, String>();
+
+        LdapName ldapName = new LdapName(dn);
+
+        Iterator<Rdn> rdnIterator = ldapName.getRdns().iterator();
+
+        while(rdnIterator.hasNext()) {
+            Rdn rdn = rdnIterator.next();
+
+            logger.debug(rdn.getType() + " = " + rdn.getValue().toString());
+            map.put(rdn.getType(), rdn.getValue().toString());
+        }
+
+        return map;
+    }
+}
diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/OgnlUtils.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/OgnlUtils.java
new file mode 100644
index 00000000..e98cb124
--- /dev/null
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/OgnlUtils.java
@@ -0,0 +1,22 @@
+package at.gv.egiz.pdfas.common.utils;
+
+import ognl.OgnlContext;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Created with IntelliJ IDEA.
+ * User: afitzek
+ * Date: 9/11/13
+ * Time: 1:05 PM
+ * To change this template use File | Settings | File Templates.
+ */
+public class OgnlUtils {
+
+    private static final Logger logger = LoggerFactory.getLogger(OgnlUtils.class);
+
+    public static String resolvsOgnlExpression(String expression, OgnlContext ctx) {
+        // TODO!
+        return expression;
+    }
+}
diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/PDFUtils.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/PDFUtils.java
new file mode 100644
index 00000000..155f9cfb
--- /dev/null
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/PDFUtils.java
@@ -0,0 +1,94 @@
+package at.gv.egiz.pdfas.common.utils;
+
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.List;
+
+
+public class PDFUtils {
+
+    private static final Logger logger = LoggerFactory.getLogger(PDFUtils.class);
+
+
+    private static final byte[] signature_pattern = new byte[] {
+            (byte) 0x0A, (byte) 0x2F, (byte) 0x43, (byte) 0x6F,   // ./Co
+            (byte) 0x6E, (byte) 0x74, (byte) 0x65, (byte) 0x6E,   // nten
+            (byte) 0x74, (byte) 0x73, (byte) 0x20, (byte) 0x0A,   // ts .
+            (byte) 0x2F, (byte) 0x42, (byte) 0x79, (byte) 0x74,   // /Byt
+            (byte) 0x65, (byte) 0x52, (byte) 0x61, (byte) 0x6E,   // eRan
+            (byte) 0x67, (byte) 0x65, (byte) 0x20, (byte) 0x5B,   // ge [
+
+    };
+
+    private static final byte range_seperation = (byte) 0x20;
+    private static final byte range_end = (byte) 0x5D;
+
+    private static int extractASCIIInteger(byte[] data, int offset) {
+       int nextsepp = nextSeperator(data, offset);
+
+        if(nextsepp < offset) {
+            return -1;
+        }
+
+        String asciiString = new String(data, offset, nextsepp - offset);
+
+        logger.debug("Extracted " + asciiString);
+
+        return Integer.parseInt(asciiString);
+    }
+
+    private static int nextSeperator(byte[] data, int offset) {
+        for(int i = offset; i < data.length; i++) {
+            if(data[i] == range_seperation) {
+                return i;
+            } else if(data[i] == range_end) {
+                return i;
+            }
+        }
+        return -2;
+    }
+
+    public static int[] extractSignatureByteRange(byte[] rawPdfData) {
+        int i = 0;
+        for(i = rawPdfData.length - 1; i >= 0; i--) {
+            if(rawPdfData[i] == signature_pattern[0] &&
+                    i+signature_pattern.length < rawPdfData.length) {
+                boolean match = true;
+                for(int j = 0; j < signature_pattern.length; j++) {
+
+                    if(rawPdfData[i+j] != signature_pattern[j]) {
+                        match = false;
+                        break;
+                    }
+                }
+
+                if(match) {
+
+                    int offset = i + signature_pattern.length;
+                    List<Integer> byteRange = new ArrayList<Integer>();
+                    while(offset > 0) {
+                        byteRange.add(extractASCIIInteger(rawPdfData, offset));
+                        offset = nextSeperator(rawPdfData, offset);
+                        if(rawPdfData[offset] == range_end) {
+                            break;
+                        }
+                        offset++;
+                    }
+                    int[] range = new int[byteRange.size()];
+                    for(int j = 0; j < byteRange.size(); j++) {
+                        range[j] = byteRange.get(j);
+                    }
+                    return range;
+                }
+            }
+        }
+        return null;
+    }
+
+    public static void checkPDFPermissions(PDDocument doc) {
+        // TODO: Check permission for document
+    }
+}
diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/StreamUtils.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/StreamUtils.java
new file mode 100644
index 00000000..0b15d700
--- /dev/null
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/StreamUtils.java
@@ -0,0 +1,28 @@
+package at.gv.egiz.pdfas.common.utils;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * Created with IntelliJ IDEA.
+ * User: afitzek
+ * Date: 8/29/13
+ * Time: 9:54 AM
+ * To change this template use File | Settings | File Templates.
+ */
+public class StreamUtils {
+
+    public static byte[] inputStreamToByteArray(InputStream stream) throws IOException {
+        ByteArrayOutputStream bos = new ByteArrayOutputStream();
+        byte[] buffer = new byte[4096];
+        int readBytes = 0;
+
+        while((readBytes = stream.read(buffer)) != -1) {
+            bos.write(buffer, 0, readBytes);
+        }
+        stream.close();
+        bos.close();
+        return bos.toByteArray();
+    }
+}
diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/StringUtils.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/StringUtils.java
new file mode 100644
index 00000000..63aae211
--- /dev/null
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/StringUtils.java
@@ -0,0 +1,33 @@
+package at.gv.egiz.pdfas.common.utils;
+
+import java.util.Formatter;
+
+/**
+ * Created with IntelliJ IDEA.
+ * User: afitzek
+ * Date: 8/28/13
+ * Time: 12:42 PM
+ * To change this template use File | Settings | File Templates.
+ */
+public class StringUtils {
+
+    public static String bytesToHexString(byte[] bytes) {
+        StringBuilder sb = new StringBuilder(bytes.length * 2);
+
+        Formatter formatter = new Formatter(sb);
+        for (byte b : bytes) {
+            formatter.format("%02x", b);
+        }
+
+        return sb.toString();
+    }
+
+    public static String extractLastID(String id) {
+        int lastIDX = id.lastIndexOf('.');
+        String result = id;
+        if(lastIDX > 0) {
+            result = id.substring(lastIDX+1);
+        }
+        return result;
+    }
+}
diff --git a/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/package-info.java b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/package-info.java
new file mode 100644
index 00000000..91b05145
--- /dev/null
+++ b/pdf-as-common/src/main/java/at/gv/egiz/pdfas/common/utils/package-info.java
@@ -0,0 +1,8 @@
+/**
+ * 
+ */
+/**
+ * @author afitzek
+ *
+ */
+package at.gv.egiz.pdfas.common.utils;
\ No newline at end of file