X-Git-Url: https://git.stg.codes/stg.git/blobdiff_plain/70f8adff2c970496bdc45717cad49ddec0405ae7..8c6fa3fbaccc22127280bf77a48fab5a3ee0716e:/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
index 8a90567d..79822852 100644
--- a/projects/stargazer/plugins/other/radius/config.cpp
+++ b/projects/stargazer/plugins/other/radius/config.cpp
@@ -20,6 +20,7 @@
 
 #include "config.h"
 
+#include "stg/user.h"
 #include "stg/common.h"
 
 #include <vector>
@@ -34,11 +35,17 @@ namespace
 
 struct ParserError : public std::runtime_error
 {
+    ParserError(const std::string& message)
+        : runtime_error("Config is not valid. " + message),
+          position(0),
+          error(message)
+    {}
     ParserError(size_t pos, const std::string& message)
         : runtime_error("Parsing error at position " + x2str(pos) + ". " + message),
           position(pos),
           error(message)
     {}
+    virtual ~ParserError() throw() {}
 
     size_t position;
     std::string error;
@@ -51,19 +58,20 @@ size_t skipSpaces(const std::string& value, size_t start)
     return start;
 }
 
-size_t checkChar(const std:string& value, size_t start, char ch)
+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) + "'.");
+        throw ParserError(start, "Unexpected end of string. Expected '" + std::string(1, ch) + "'.");
     if (value[start] != ch)
-        throw ParserError(start, "Expected '" + std::string(ch) + "', got '" + std::string(value[start]) + "'.");
+        throw ParserError(start, "Expected '" + std::string(1, ch) + "', got '" + std::string(1, 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]))
+    while (start < value.length() && !std::isspace(value[start]) &&
+           value[start] != ',' && value[start] != '(' && value[start] != ')')
         dest.push_back(value[start++]);
     if (dest.empty()) {
         if (start == value.length())
@@ -71,7 +79,7 @@ std::pair<size_t, std::string> readString(const std::string& value, size_t start
         else
             throw ParserError(start, "Unexpected whitespace. Expected string.");
     }
-    return dest;
+    return std::make_pair(start, dest);
 }
 
 Config::Pairs toPairs(const std::vector<std::string>& values)
@@ -84,17 +92,22 @@ Config::Pairs toPairs(const std::vector<std::string>& values)
     while (start < value.size()) {
         Config::Pair pair;
         start = skipSpaces(value, start);
+        if (!res.empty())
+        {
+            start = checkChar(value, start, ',');
+            start = skipSpaces(value, start);
+        }
         size_t pairStart = start;
         start = checkChar(value, start, '(');
-        std::pair<size_t, std::string> key = readString(value, start);
+        const 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 = checkChar(value, start, ',');
         start = skipSpaces(value, start);
-        std::pair<size_t, std::string> value = readString(value, start);
-        start = key.first;
-        pair.second = value.second;
+        const std::pair<size_t, std::string> val = readString(value, start);
+        start = val.first;
+        pair.second = val.second;
         start = skipSpaces(value, start);
         start = checkChar(value, start, ')');
         if (res.find(pair.first) != res.end())
@@ -119,59 +132,255 @@ std::string toString(const std::vector<std::string>& values)
     return values[0];
 }
 
+uid_t toUID(const std::vector<std::string>& values)
+{
+    if (values.empty())
+        return -1;
+    uid_t res = str2uid(values[0]);
+    if (res == static_cast<uid_t>(-1))
+        throw ParserError("Invalid user name: '" + values[0] + "'");
+    return res;
+}
+
+gid_t toGID(const std::vector<std::string>& values)
+{
+    if (values.empty())
+        return -1;
+    gid_t res = str2gid(values[0]);
+    if (res == static_cast<gid_t>(-1))
+        throw ParserError("Invalid group name: '" + values[0] + "'");
+    return res;
+}
+
+mode_t toMode(const std::vector<std::string>& values)
+{
+    if (values.empty())
+        return -1;
+    mode_t res = str2mode(values[0]);
+    if (res == static_cast<mode_t>(-1))
+        throw ParserError("Invalid mode: '" + values[0] + "'");
+    return res;
+}
+
 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)
+    if (str2x(values[0], res) == 0)
         return res;
     return 0;
 }
 
-Config::Pairs parseVector(const std::string& paramName, const MODULE_SETTINGS& params)
+uint16_t toPort(const std::string& value)
+{
+    if (value.empty())
+        return 0;
+    uint16_t res = 0;
+    if (str2x(value, res) == 0)
+        return res;
+    throw ParserError("'" + value + "' is not a valid port number.");
+}
+
+typedef std::map<std::string, Config::ReturnCode> Codes;
+
+// One-time call to initialize the list of codes.
+Codes getCodes()
+{
+    Codes res;
+    res["reject"]   = Config::REJECT;
+    res["fail"]     = Config::FAIL;
+    res["ok"]       = Config::OK;
+    res["handled"]  = Config::HANDLED;
+    res["invalid"]  = Config::INVALID;
+    res["userlock"] = Config::USERLOCK;
+    res["notfound"] = Config::NOTFOUND;
+    res["noop"]     = Config::NOOP;
+    res["updated"]  = Config::UPDATED;
+    return res;
+}
+
+Config::ReturnCode toReturnCode(const std::vector<std::string>& values)
+{
+    static Codes codes(getCodes());
+    if (values.empty())
+        return Config::REJECT;
+    std::string code = ToLower(values[0]);
+    const Codes::const_iterator it = codes.find(code);
+    if (it == codes.end())
+        return Config::REJECT;
+    return it->second;
+}
+
+Config::Pairs parseVector(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
 {
-    for (size_t i = 0; i < params.moduleParams.size(); ++i)
-        if (params.moduleParams[i].first == paramName)
-            return toPairs(params.moduleParams[i].second);
+    for (size_t i = 0; i < params.size(); ++i)
+        if (params[i].param == paramName)
+            return toPairs(params[i].value);
     return Config::Pairs();
 }
 
-bool parseBool(const std::string& paramName, const MODULE_SETTINGS& params)
+Config::Authorize parseAuthorize(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
+{
+    for (size_t i = 0; i < params.size(); ++i)
+        if (params[i].param == paramName)
+            return Config::Authorize(toPairs(params[i].value));
+    return Config::Authorize();
+}
+
+Config::ReturnCode parseReturnCode(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
+{
+    for (size_t i = 0; i < params.size(); ++i)
+        if (params[i].param == paramName)
+            return toReturnCode(params[i].value);
+    return Config::REJECT;
+}
+
+bool parseBool(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
 {
-    for (size_t i = 0; i < params.moduleParams.size(); ++i)
-        if (params.moduleParams[i].first == paramName)
-            return toBool(params.moduleParams[i].second);
+    for (size_t i = 0; i < params.size(); ++i)
+        if (params[i].param == paramName)
+            return toBool(params[i].value);
     return false;
 }
 
-std::string parseString(const std::string& paramName, const MODULE_SETTINGS& params)
+std::string parseString(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
 {
-    for (size_t i = 0; i < params.moduleParams.size(); ++i)
-        if (params.moduleParams[i].first == paramName)
-            return toString(params.moduleParams[i].second);
+    for (size_t i = 0; i < params.size(); ++i)
+        if (params[i].param == paramName)
+            return toString(params[i].value);
     return "";
 }
 
-template <typename T>
-T parseInt(const std::string& paramName, const MODULE_SETTINGS& params)
+std::string parseAddress(Config::Type connectionType, const std::string& value)
 {
-    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;
+    size_t pos = value.find_first_of(':');
+    if (pos == std::string::npos)
+        throw ParserError("Connection type is not specified. Should be either 'unix' or 'tcp'.");
+    if (connectionType == Config::UNIX)
+        return value.substr(pos + 1);
+    std::string address(value.substr(pos + 1));
+    pos = address.find_first_of(':', pos + 1);
+    if (pos == std::string::npos)
+        throw ParserError("Port is not specified.");
+    return address.substr(0, pos - 1);
+}
+
+std::string parsePort(Config::Type connectionType, const std::string& value)
+{
+    size_t pos = value.find_first_of(':');
+    if (pos == std::string::npos)
+        throw ParserError("Connection type is not specified. Should be either 'unix' or 'tcp'.");
+    if (connectionType == Config::UNIX)
+        return "";
+    std::string address(value.substr(pos + 1));
+    pos = address.find_first_of(':', pos + 1);
+    if (pos == std::string::npos)
+        throw ParserError("Port is not specified.");
+    return address.substr(pos + 1);
+}
+
+Config::Type parseConnectionType(const std::string& address)
+{
+    size_t pos = address.find_first_of(':');
+    if (pos == std::string::npos)
+        throw ParserError("Connection type is not specified. Should be either 'unix' or 'tcp'.");
+    std::string type = ToLower(address.substr(0, pos));
+    if (type == "unix")
+        return Config::UNIX;
+    else if (type == "tcp")
+        return Config::TCP;
+    throw ParserError("Invalid connection type. Should be either 'unix' or 'tcp', got '" + type + "'");
+}
+
+Config::Section parseSection(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
+{
+    for (size_t i = 0; i < params.size(); ++i)
+        if (params[i].param == paramName)
+            return Config::Section(parseVector("match", params[i].sections),
+                                   parseVector("modify", params[i].sections),
+                                   parseVector("reply", params[i].sections),
+                                   parseReturnCode("no_match", params[i].sections),
+                                   parseAuthorize("authorize", params[i].sections));
+    return Config::Section();
+}
+
+uid_t parseUID(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
+{
+    for (size_t i = 0; i < params.size(); ++i)
+        if (params[i].param == paramName)
+            return toUID(params[i].value);
+    return -1;
+}
+
+gid_t parseGID(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
+{
+    for (size_t i = 0; i < params.size(); ++i)
+        if (params[i].param == paramName)
+            return toGID(params[i].value);
+    return -1;
+}
+
+mode_t parseMode(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
+{
+    for (size_t i = 0; i < params.size(); ++i)
+        if (params[i].param == paramName)
+            return toMode(params[i].value);
+    return -1;
 }
 
 } // namespace anonymous
 
+bool Config::Authorize::check(const USER& user, const Config::Pairs& radiusData) const
+{
+    if (!m_auth)
+        return false; // No flag - no authorization.
+
+    if (m_cond.empty())
+        return true; // Empty parameter - always authorize.
+
+    Config::Pairs::const_iterator it = m_cond.begin();
+    for (; it != m_cond.end(); ++it)
+    {
+        const Config::Pairs::const_iterator pos = radiusData.find(it->first);
+        if (pos == radiusData.end())
+            return false; // No required Radius parameter.
+        if (user.GetParamValue(it->second) != pos->second)
+            return false; // No match with the user.
+    }
+
+    return true;
+}
+
 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))
+    : autz(parseSection("autz", settings.moduleParams)),
+      auth(parseSection("auth", settings.moduleParams)),
+      postauth(parseSection("postauth", settings.moduleParams)),
+      preacct(parseSection("preacct", settings.moduleParams)),
+      acct(parseSection("acct", settings.moduleParams)),
+      verbose(parseBool("verbose", settings.moduleParams)),
+      address(parseString("bind_address", settings.moduleParams)),
+      connectionType(parseConnectionType(address)),
+      bindAddress(parseAddress(connectionType, address)),
+      portStr(parsePort(connectionType, address)),
+      port(toPort(portStr)),
+      key(parseString("key", settings.moduleParams)),
+      sockUID(parseUID("sock_owner", settings.moduleParams)),
+      sockGID(parseGID("sock_group", settings.moduleParams)),
+      sockMode(parseMode("sock_mode", settings.moduleParams))
 {
+    size_t count = 0;
+    if (autz.authorize.exists())
+        ++count;
+    if (auth.authorize.exists())
+        ++count;
+    if (postauth.authorize.exists())
+        ++count;
+    if (preacct.authorize.exists())
+        ++count;
+    if (acct.authorize.exists())
+        ++count;
+    if (count > 0)
+        throw ParserError("Authorization flag is specified in more than one section.");
 }