2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 * Author : Maxim Mamontov <faust@stargazer.dp.ua>
24 #include "stg/common.h"
29 #include <strings.h> // strncasecmp
36 struct ParserError : public std::runtime_error
38 ParserError(const std::string& message)
39 : runtime_error("Config is not valid. " + message),
43 ParserError(size_t pos, const std::string& message)
44 : runtime_error("Parsing error at position " + x2str(pos) + ". " + message),
48 virtual ~ParserError() throw() {}
54 size_t skipSpaces(const std::string& value, size_t start)
56 while (start < value.length() && std::isspace(value[start]))
61 size_t checkChar(const std::string& value, size_t start, char ch)
63 if (start >= value.length())
64 throw ParserError(start, "Unexpected end of string. Expected '" + std::string(1, ch) + "'.");
65 if (value[start] != ch)
66 throw ParserError(start, "Expected '" + std::string(1, ch) + "', got '" + std::string(1, value[start]) + "'.");
70 std::pair<size_t, std::string> readString(const std::string& value, size_t start)
73 while (start < value.length() && !std::isspace(value[start]) &&
74 value[start] != ',' && value[start] != '(' && value[start] != ')')
75 dest.push_back(value[start++]);
77 if (start == value.length())
78 throw ParserError(start, "Unexpected end of string. Expected string.");
80 throw ParserError(start, "Unexpected whitespace. Expected string.");
82 return std::make_pair(start, dest);
85 Config::Pairs toPairs(const std::vector<std::string>& values)
88 return Config::Pairs();
89 std::string value(values[0]);
92 while (start < value.size()) {
94 start = skipSpaces(value, start);
97 start = checkChar(value, start, ',');
98 start = skipSpaces(value, start);
100 size_t pairStart = start;
101 start = checkChar(value, start, '(');
102 const std::pair<size_t, std::string> key = readString(value, start);
104 pair.first = key.second;
105 start = skipSpaces(value, start);
106 start = checkChar(value, start, ',');
107 start = skipSpaces(value, start);
108 const std::pair<size_t, std::string> val = readString(value, start);
110 pair.second = val.second;
111 start = skipSpaces(value, start);
112 start = checkChar(value, start, ')');
113 if (res.find(pair.first) != res.end())
114 throw ParserError(pairStart, "Duplicate field.");
120 bool toBool(const std::vector<std::string>& values)
124 std::string value(values[0]);
125 return strncasecmp(value.c_str(), "yes", 3) == 0;
128 std::string toString(const std::vector<std::string>& values)
135 uid_t toUID(const std::vector<std::string>& values)
139 uid_t res = str2uid(values[0]);
140 if (res == static_cast<uid_t>(-1))
141 throw ParserError("Invalid user name: '" + values[0] + "'");
145 gid_t toGID(const std::vector<std::string>& values)
149 gid_t res = str2gid(values[0]);
150 if (res == static_cast<gid_t>(-1))
151 throw ParserError("Invalid group name: '" + values[0] + "'");
155 mode_t toMode(const std::vector<std::string>& values)
159 mode_t res = str2mode(values[0]);
160 if (res == static_cast<mode_t>(-1))
161 throw ParserError("Invalid mode: '" + values[0] + "'");
165 template <typename T>
166 T toInt(const std::vector<std::string>& values)
171 if (str2x(values[0], res) == 0)
176 uint16_t toPort(const std::string& value)
181 if (str2x(value, res) == 0)
183 throw ParserError("'" + value + "' is not a valid port number.");
186 typedef std::map<std::string, Config::ReturnCode> Codes;
188 // One-time call to initialize the list of codes.
192 res["reject"] = Config::REJECT;
193 res["fail"] = Config::FAIL;
194 res["ok"] = Config::OK;
195 res["handled"] = Config::HANDLED;
196 res["invalid"] = Config::INVALID;
197 res["userlock"] = Config::USERLOCK;
198 res["notfound"] = Config::NOTFOUND;
199 res["noop"] = Config::NOOP;
200 res["updated"] = Config::UPDATED;
204 Config::ReturnCode toReturnCode(const std::vector<std::string>& values)
206 static Codes codes(getCodes());
208 return Config::REJECT;
209 std::string code = ToLower(values[0]);
210 const Codes::const_iterator it = codes.find(code);
211 if (it == codes.end())
212 return Config::REJECT;
216 Config::Pairs parseVector(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
218 for (size_t i = 0; i < params.size(); ++i)
219 if (params[i].param == paramName)
220 return toPairs(params[i].value);
221 return Config::Pairs();
224 Config::Authorize parseAuthorize(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
226 for (size_t i = 0; i < params.size(); ++i)
227 if (params[i].param == paramName)
228 return Config::Authorize(toPairs(params[i].value));
229 return Config::Authorize();
232 Config::ReturnCode parseReturnCode(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
234 for (size_t i = 0; i < params.size(); ++i)
235 if (params[i].param == paramName)
236 return toReturnCode(params[i].value);
237 return Config::REJECT;
240 bool parseBool(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
242 for (size_t i = 0; i < params.size(); ++i)
243 if (params[i].param == paramName)
244 return toBool(params[i].value);
248 std::string parseString(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
250 for (size_t i = 0; i < params.size(); ++i)
251 if (params[i].param == paramName)
252 return toString(params[i].value);
256 std::string parseAddress(Config::Type connectionType, const std::string& value)
258 size_t pos = value.find_first_of(':');
259 if (pos == std::string::npos)
260 throw ParserError("Connection type is not specified. Should be either 'unix' or 'tcp'.");
261 if (connectionType == Config::UNIX)
262 return value.substr(pos + 1);
263 std::string address(value.substr(pos + 1));
264 pos = address.find_first_of(':', pos + 1);
265 if (pos == std::string::npos)
266 throw ParserError("Port is not specified.");
267 return address.substr(0, pos - 1);
270 std::string parsePort(Config::Type connectionType, const std::string& value)
272 size_t pos = value.find_first_of(':');
273 if (pos == std::string::npos)
274 throw ParserError("Connection type is not specified. Should be either 'unix' or 'tcp'.");
275 if (connectionType == Config::UNIX)
277 std::string address(value.substr(pos + 1));
278 pos = address.find_first_of(':', pos + 1);
279 if (pos == std::string::npos)
280 throw ParserError("Port is not specified.");
281 return address.substr(pos + 1);
284 Config::Type parseConnectionType(const std::string& address)
286 size_t pos = address.find_first_of(':');
287 if (pos == std::string::npos)
288 throw ParserError("Connection type is not specified. Should be either 'unix' or 'tcp'.");
289 std::string type = ToLower(address.substr(0, pos));
292 else if (type == "tcp")
294 throw ParserError("Invalid connection type. Should be either 'unix' or 'tcp', got '" + type + "'");
297 Config::Section parseSection(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
299 for (size_t i = 0; i < params.size(); ++i)
300 if (params[i].param == paramName)
301 return Config::Section(parseVector("match", params[i].sections),
302 parseVector("modify", params[i].sections),
303 parseVector("reply", params[i].sections),
304 parseReturnCode("no_match", params[i].sections),
305 parseAuthorize("authorize", params[i].sections));
306 return Config::Section();
309 uid_t parseUID(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
311 for (size_t i = 0; i < params.size(); ++i)
312 if (params[i].param == paramName)
313 return toUID(params[i].value);
317 gid_t parseGID(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
319 for (size_t i = 0; i < params.size(); ++i)
320 if (params[i].param == paramName)
321 return toGID(params[i].value);
325 mode_t parseMode(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
327 for (size_t i = 0; i < params.size(); ++i)
328 if (params[i].param == paramName)
329 return toMode(params[i].value);
333 } // namespace anonymous
335 bool Config::Authorize::check(const USER& user, const Config::Pairs& radiusData) const
338 return false; // No flag - no authorization.
341 return true; // Empty parameter - always authorize.
343 Config::Pairs::const_iterator it = m_cond.begin();
344 for (; it != m_cond.end(); ++it)
346 const Config::Pairs::const_iterator pos = radiusData.find(it->first);
347 if (pos == radiusData.end())
348 return false; // No required Radius parameter.
349 if (user.GetParamValue(it->second) != pos->second)
350 return false; // No match with the user.
356 Config::Config(const MODULE_SETTINGS& settings)
357 : autz(parseSection("autz", settings.moduleParams)),
358 auth(parseSection("auth", settings.moduleParams)),
359 postauth(parseSection("postauth", settings.moduleParams)),
360 preacct(parseSection("preacct", settings.moduleParams)),
361 acct(parseSection("acct", settings.moduleParams)),
362 verbose(parseBool("verbose", settings.moduleParams)),
363 address(parseString("bind_address", settings.moduleParams)),
364 connectionType(parseConnectionType(address)),
365 bindAddress(parseAddress(connectionType, address)),
366 portStr(parsePort(connectionType, address)),
367 port(toPort(portStr)),
368 key(parseString("key", settings.moduleParams)),
369 sockUID(parseUID("sock_owner", settings.moduleParams)),
370 sockGID(parseGID("sock_group", settings.moduleParams)),
371 sockMode(parseMode("sock_mode", settings.moduleParams))
374 if (autz.authorize.exists())
376 if (auth.authorize.exists())
378 if (postauth.authorize.exists())
380 if (preacct.authorize.exists())
382 if (acct.authorize.exists())
385 throw ParserError("Authorization flag is specified in more than one section.");