Add <config:format> to avoid breaking existing configuration files with XML entity changes

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@11974 e03df62e-2008-0410-955e-edbf42e46eb7

1 files changed, 24 insertions, 2 deletions

diff --git a/src/configparser.cpp b/src/configparser.cpp
index 1373ae5af..495d38fff 100644
--- a/src/configparser.cpp
+++ b/src/configparser.cpp
@@ -18,7 +18,7 @@
 struct Parser
 {
 	ParseStack& stack;
-	const int flags;
+	int flags;
 	FILE* const file;
 	fpos current;
 	fpos last_tag;
@@ -112,7 +112,7 @@ struct Parser
 		while (1)
 		{
 			ch = next();
-			if (ch == '&')
+			if (ch == '&' && (flags & FLAG_USE_XML))
 			{
 				std::string varname;
 				while (1)
@@ -134,6 +134,16 @@ struct Parser
 					throw CoreException("Undefined XML entity reference '&" + varname + ";'");
 				value.append(var->second);
 			}
+			else if (ch == '\\' && !(flags & FLAG_USE_XML))
+			{
+				int esc = next();
+				if (esc == 'n')
+					value.push_back('\n');
+				else if (isalpha(esc))
+					throw CoreException("Unknown escape character \\" + std::string(1, esc));
+				else
+					value.push_back(esc);
+			}
 			else if (ch == '"')
 				break;
 			else
@@ -169,12 +179,24 @@ struct Parser
 		}
 		else if (name == "define")
 		{
+			if (!(flags & FLAG_USE_XML))
+				throw CoreException("<define> tags may only be used in XML-style config (add <config format=\"xml\">)");
 			std::string varname = tag->getString("name");
 			std::string value = tag->getString("value");
 			if (varname.empty())
 				throw CoreException("Variable definition must include variable name");
 			stack.vars[varname] = value;
 		}
+		else if (name == "config")
+		{
+			std::string format = tag->getString("format");
+			if (format == "xml")
+				flags |= FLAG_USE_XML;
+			else if (format == "compat")
+				flags &= ~FLAG_USE_XML;
+			else if (!format.empty())
+				throw CoreException("Unknown configuration format " + format);
+		}
 		else
 		{
 			stack.output.insert(std::make_pair(name, tag));