Introduced new mod_radius.

[stg.git] / projects / stargazer / plugins / other / radius / config.cpp

diff --git a/projects/stargazer/plugins/other/radius/config.cpp b/projects/stargazer/plugins/other/radius/config.cpp
new file mode 100644 (file)
index 0000000..8a90567
--- /dev/null
+++ b/projects/stargazer/plugins/other/radius/config.cpp
@@ -0,0 +1,177 @@
+/*
+ *    This program 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 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program 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 this program; if not, write to the Free Software
+ *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ *    Author : Maxim Mamontov <faust@stargazer.dp.ua>
+ */
+
+#include "config.h"
+
+#include "stg/common.h"
+
+#include <vector>
+#include <stdexcept>
+
+#include <strings.h> // strncasecmp
+
+using STG::Config;
+
+namespace
+{
+
+struct ParserError : public std::runtime_error
+{
+    ParserError(size_t pos, const std::string& message)
+        : runtime_error("Parsing error at position " + x2str(pos) + ". " + message),
+          position(pos),
+          error(message)
+    {}
+
+    size_t position;
+    std::string error;
+};
+
+size_t skipSpaces(const std::string& value, size_t start)
+{
+    while (start < value.length() && std::isspace(value[start]))
+        ++start;
+    return start;
+}
+
+size_t checkChar(const std:string& value, size_t start, char ch)
+{
+    if (start >= value.length())
+        throw ParserError(start, "Unexpected end of string. Expected '" + std::string(ch) + "'.");
+    if (value[start] != ch)
+        throw ParserError(start, "Expected '" + std::string(ch) + "', got '" + std::string(value[start]) + "'.");
+    return start + 1;
+}
+
+std::pair<size_t, std::string> readString(const std::string& value, size_t start)
+{
+    std::string dest;
+    while (start < value.length() && !std::isspace(value[start]))
+        dest.push_back(value[start++]);
+    if (dest.empty()) {
+        if (start == value.length())
+            throw ParserError(start, "Unexpected end of string. Expected string.");
+        else
+            throw ParserError(start, "Unexpected whitespace. Expected string.");
+    }
+    return dest;
+}
+
+Config::Pairs toPairs(const std::vector<std::string>& values)
+{
+    if (values.empty())
+        return Config::Pairs();
+    std::string value(values[0]);
+    Config::Pairs res;
+    size_t start = 0;
+    while (start < value.size()) {
+        Config::Pair pair;
+        start = skipSpaces(value, start);
+        size_t pairStart = start;
+        start = checkChar(value, start, '(');
+        std::pair<size_t, std::string> key = readString(value, start);
+        start = key.first;
+        pair.first = key.second;
+        start = skipSpaces(value, start);
+        start = checkChar(value, start, ',')
+        start = skipSpaces(value, start);
+        std::pair<size_t, std::string> value = readString(value, start);
+        start = key.first;
+        pair.second = value.second;
+        start = skipSpaces(value, start);
+        start = checkChar(value, start, ')');
+        if (res.find(pair.first) != res.end())
+            throw ParserError(pairStart, "Duplicate field.");
+        res.insert(pair);
+    }
+    return res;
+}
+
+bool toBool(const std::vector<std::string>& values)
+{
+    if (values.empty())
+        return false;
+    std::string value(values[0]);
+    return strncasecmp(value.c_str(), "yes", 3) == 0;
+}
+
+std::string toString(const std::vector<std::string>& values)
+{
+    if (values.empty())
+        return "";
+    return values[0];
+}
+
+template <typename T>
+T toInt(const std::vector<std::string>& values)
+{
+    if (values.empty())
+        return 0;
+    T res = 0;
+    if (srt2x(values[0], res) == 0)
+        return res;
+    return 0;
+}
+
+Config::Pairs parseVector(const std::string& paramName, const MODULE_SETTINGS& params)
+{
+    for (size_t i = 0; i < params.moduleParams.size(); ++i)
+        if (params.moduleParams[i].first == paramName)
+            return toPairs(params.moduleParams[i].second);
+    return Config::Pairs();
+}
+
+bool parseBool(const std::string& paramName, const MODULE_SETTINGS& params)
+{
+    for (size_t i = 0; i < params.moduleParams.size(); ++i)
+        if (params.moduleParams[i].first == paramName)
+            return toBool(params.moduleParams[i].second);
+    return false;
+}
+
+std::string parseString(const std::string& paramName, const MODULE_SETTINGS& params)
+{
+    for (size_t i = 0; i < params.moduleParams.size(); ++i)
+        if (params.moduleParams[i].first == paramName)
+            return toString(params.moduleParams[i].second);
+    return "";
+}
+
+template <typename T>
+T parseInt(const std::string& paramName, const MODULE_SETTINGS& params)
+{
+    for (size_t i = 0; i < params.moduleParams.size(); ++i)
+        if (params.moduleParams[i].first == paramName)
+            return toInt<T>(params.moduleParams[i].second);
+    return 0;
+}
+
+} // namespace anonymous
+
+Config::Config(const MODULE_SETTINGS& settings)
+    : match(parseVector("match", settings)),
+      modify(parseVector("modify", settings)),
+      reply(parseVector("reply", settings)),
+      verbose(parseBool("verbose", settings)),
+      bindAddress(parseString("bind_address", settings)),
+      port(parseInt<uint16_t>("port", settings)),
+      key(parseString("key", settings))
+{
+}