Merge

1 files changed, 232 insertions, 0 deletions

diff --git a/src/de/blinkt/openvpn/ConfigParser.java b/src/de/blinkt/openvpn/ConfigParser.java
new file mode 100644
index 00000000..8497330f
--- /dev/null
+++ b/src/de/blinkt/openvpn/ConfigParser.java
@@ -0,0 +1,232 @@
+package de.blinkt.openvpn;
+
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Vector;
+
+//! Openvpn Config FIle Parser, probably not 100% accurate but close enough
+
+// And rember, this is valid :)
+// --<foo>
+// bar
+// </bar>
+public class ConfigParser {
+
+
+	private HashMap<String,Vector<String>> options = new HashMap<String, Vector<String>>();
+	private void parseConfig(String filename) throws IOException, ConfigParseError {
+
+
+		FileReader fr = new FileReader(filename);
+		BufferedReader br =new BufferedReader(fr);
+
+		int lineno=0;
+
+		while (true){
+			String line = br.readLine();
+			if(line==null)
+				break;
+			lineno++;
+			System.out.print("LINE:");
+			System.out.println(line);
+			Vector<String> args = parseline(line);
+			if(args.size() ==0)
+				continue;
+
+
+
+			if(args.get(0).startsWith("--"))
+				args.set(0, args.get(0).substring(2));
+
+			checkinlinefile(args,br);
+
+			options.put(args.get(0), args);
+		}
+	}
+
+	private void checkinlinefile(Vector<String> args, BufferedReader br) throws IOException, ConfigParseError {
+		String arg0 = args.get(0);
+		// CHeck for <foo>
+		if(arg0.startsWith("<") && arg0.endsWith(">")) {
+			String argname = arg0.substring(1, arg0.length()-1);
+			String inlinefile = "";
+
+			String endtag = String.format("</%s>",argname);
+			do {
+				String line = br.readLine();
+				if(line==null){
+					throw new ConfigParseError(String.format("No endtag </%s> for starttag <%s> found",argname,argname));
+				}
+				if(line.equals(endtag))
+					break;
+				else {
+					inlinefile+=line;
+					inlinefile+= "\n";					
+				}
+			} while(true);
+
+			args.clear();
+			args.add(argname);
+			args.add(inlinefile);
+		}
+
+	}
+
+	enum linestate {
+		initial,
+		readin_single_quote
+		, reading_quoted, reading_unquoted, done}
+
+	private boolean space(char c) {
+		// I really hope nobody is using zero bytes inside his/her config file
+		// to sperate parameter but here we go:
+		return Character.isSpace(c) || c == '\0';
+
+	}
+
+	public class ConfigParseError extends Exception {
+		private static final long serialVersionUID = -60L;
+
+		public ConfigParseError(String msg) {
+			super(msg);
+		}
+	}
+
+
+	// adapted openvpn's parse function to java
+	private Vector<String> parseline(String line) throws ConfigParseError {
+		Vector<String> parameters = new Vector<String>(); 
+
+		if (line.length()==0)
+			return parameters;
+
+
+		linestate state = linestate.initial;
+		boolean backslash = false;
+		char out=0;
+
+		int pos=0;
+		String currentarg="";
+
+		do { 
+			// Emulate the c parsing ...
+			char in;
+			if(pos < line.length())
+				in = line.charAt(pos);
+			else 
+				in = '\0';
+
+			if (!backslash && in == '\\' && state != linestate.readin_single_quote)
+			{
+				backslash = true;
+			}
+			else
+			{
+				if (state == linestate.initial)
+				{
+					if (!space (in))
+					{
+						if (in == ';' || in == '#') /* comment */
+							break;
+						if (!backslash && in == '\"')
+							state = linestate.reading_quoted;
+						else if (!backslash && in == '\'')
+							state = linestate.readin_single_quote;
+						else
+						{
+							out = in;
+							state = linestate.reading_unquoted;
+						}
+					}
+				}
+				else if (state == linestate.reading_unquoted)
+				{
+					if (!backslash && space (in))
+						state = linestate.done;
+					else
+						out = in;
+				}
+				else if (state == linestate.reading_quoted)
+				{
+					if (!backslash && in == '\"')
+						state = linestate.done;
+					else
+						out = in;
+				}
+				else if (state == linestate.readin_single_quote)
+				{
+					if (in == '\'')
+						state = linestate.done;
+					else
+						out = in;
+				}
+
+				if (state == linestate.done)
+				{
+					/* ASSERT (parm_len > 0); */
+					state = linestate.initial;
+					parameters.add(currentarg);
+					currentarg = "";
+					out =0;
+				}
+
+				if (backslash && out!=0)
+				{
+					if (!(out == '\\' || out == '\"' || space (out)))
+					{
+						throw new ConfigParseError("Options warning: Bad backslash ('\\') usage");
+					}
+				}
+				backslash = false;
+			}
+
+			/* store parameter character */
+			if (out!=0)
+			{
+				currentarg+=out;
+			}
+		} while (pos++ < line.length());
+
+		return parameters;
+	}
+
+	void convertProfile() throws ConfigParseError{
+		VpnProfile newprofile = new VpnProfile("converted Profile");
+		// Pull, client, tls-client
+		
+		if(options.containsKey("client") || options.containsKey("pull")) {
+			newprofile.mUsePull=true;
+			options.remove("pull");
+			options.remove("client");
+		}
+		
+		if(options.containsKey("secret")){
+			newprofile.mAuthenticationType=VpnProfile.TYPE_STATICKEYS;
+			options.remove("secret");
+		}
+		
+		if(options.containsKey("redirect-gateway")) {
+			options.remove("redirect-gateway");
+			newprofile.mUseDefaultRoute=true;
+		} else {
+			newprofile.mUseDefaultRoute=true;
+		}
+		
+		Vector<String> mode = options.get("mode");
+		if (mode != null){
+			options.remove("mode");
+			if(mode.size() != 2) 
+				throw new ConfigParseError("--mode has more than one parameter");
+			if(!mode.get(1).equals("p2p"))
+				throw new ConfigParseError("Invalid mode for --mode specified");
+		}
+		
+	}
+
+}
+
+
+
+