1 files changed, 56 insertions, 0 deletions
diff --git a/rfc4251.C b/rfc4251.C
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+++ b/rfc4251.C
@@ -0,0 +1,56 @@
+/*
+ * rfc4251.C -- support for name-list type from RFC 4251, section 5
+ *
+ * These are the conversions between an rfc4251string containing a name-list
+ * and vector<string>.
+ *
+ * Copyright (C) 2013 Timo Weingärtner <timo@tiwe.de>
+ *
+ * This file is part of ssh-agent-filter.
+ *
+ * ssh-agent-filter is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ssh-agent-filter is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with ssh-agent-filter.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "rfc4251.h"
+
+rfc4251string::rfc4251string (std::vector<std::string> const & v) {
+	for (auto it = v.begin(); it != v.end();) {
+		if (it->size() == 0)
+			throw std::length_error{"name of zero length"};
+		if (value.size() + it->size() > std::numeric_limits<uint32_t>::max())
+			throw std::length_error{"32-bit limit for rfc4251string exceeded"};
+		value.insert(value.end(), it->data(), it->data() + it->size());
+		++it;
+		if (it == v.end())
+			break;
+		value.push_back(',');
+	}
+}
+
+rfc4251string::operator std::vector<std::string> () const {
+	std::vector<std::string> ret;
+	auto name_start = value.begin();
+	if (name_start != value.end())
+		for (auto it = name_start; ; ++it) {
+			if (it == value.end() or *it == ',') {
+				if (it == name_start)
+					throw std::length_error{"name of zero length"};
+				ret.emplace_back(name_start, it);
+				name_start = it + 1;
+			}
+			if (it == value.end())
+				break;
+		}
+	return ret;
+}