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>
23 #include "stg/common.h"
28 #include <strings.h> // strncasecmp
35 struct ParserError : public std::runtime_error
37 ParserError(size_t pos, const std::string& message)
38 : runtime_error("Parsing error at position " + x2str(pos) + ". " + message),
42 virtual ~ParserError() throw() {}
48 size_t skipSpaces(const std::string& value, size_t start)
50 while (start < value.length() && std::isspace(value[start]))
55 size_t checkChar(const std::string& value, size_t start, char ch)
57 if (start >= value.length())
58 throw ParserError(start, "Unexpected end of string. Expected '" + std::string(1, ch) + "'.");
59 if (value[start] != ch)
60 throw ParserError(start, "Expected '" + std::string(1, ch) + "', got '" + std::string(1, value[start]) + "'.");
64 std::pair<size_t, std::string> readString(const std::string& value, size_t start)
67 while (start < value.length() && !std::isspace(value[start]) &&
68 value[start] != ',' && value[start] != '(' && value[start] != ')')
69 dest.push_back(value[start++]);
71 if (start == value.length())
72 throw ParserError(start, "Unexpected end of string. Expected string.");
74 throw ParserError(start, "Unexpected whitespace. Expected string.");
76 return std::make_pair(start, dest);
79 Config::Pairs toPairs(const std::vector<std::string>& values)
82 return Config::Pairs();
83 std::string value(values[0]);
86 while (start < value.size()) {
88 start = skipSpaces(value, start);
91 start = checkChar(value, start, ',');
92 start = skipSpaces(value, start);
94 size_t pairStart = start;
95 start = checkChar(value, start, '(');
96 const std::pair<size_t, std::string> key = readString(value, start);
98 pair.first = key.second;
99 start = skipSpaces(value, start);
100 start = checkChar(value, start, ',');
101 start = skipSpaces(value, start);
102 const std::pair<size_t, std::string> val = readString(value, start);
104 pair.second = val.second;
105 start = skipSpaces(value, start);
106 start = checkChar(value, start, ')');
107 if (res.find(pair.first) != res.end())
108 throw ParserError(pairStart, "Duplicate field.");
114 bool toBool(const std::vector<std::string>& values)
118 std::string value(values[0]);
119 return strncasecmp(value.c_str(), "yes", 3) == 0;
122 std::string toString(const std::vector<std::string>& values)
129 uid_t toUID(const std::vector<std::string>& values)
133 uid_t res = str2uid(values[0]);
134 if (res == static_cast<uid_t>(-1))
135 throw ParserError(0, "Invalid user name: '" + values[0] + "'");
139 gid_t toGID(const std::vector<std::string>& values)
143 gid_t res = str2gid(values[0]);
144 if (res == static_cast<gid_t>(-1))
145 throw ParserError(0, "Invalid group name: '" + values[0] + "'");
149 mode_t toMode(const std::vector<std::string>& values)
153 mode_t res = str2mode(values[0]);
154 if (res == static_cast<mode_t>(-1))
155 throw ParserError(0, "Invalid mode: '" + values[0] + "'");
159 template <typename T>
160 T toInt(const std::vector<std::string>& values)
165 if (str2x(values[0], res) == 0)
170 uint16_t toPort(const std::string& value)
175 if (str2x(value, res) == 0)
177 throw ParserError(0, "'" + value + "' is not a valid port number.");
180 typedef std::map<std::string, Config::ReturnCode> Codes;
182 // One-time call to initialize the list of codes.
186 res["reject"] = Config::REJECT;
187 res["fail"] = Config::FAIL;
188 res["ok"] = Config::OK;
189 res["handled"] = Config::HANDLED;
190 res["invalid"] = Config::INVALID;
191 res["userlock"] = Config::USERLOCK;
192 res["notfound"] = Config::NOTFOUND;
193 res["noop"] = Config::NOOP;
194 res["updated"] = Config::UPDATED;
198 Config::ReturnCode toReturnCode(const std::vector<std::string>& values)
200 static Codes codes(getCodes());
202 return Config::REJECT;
203 std::string code = ToLower(values[0]);
204 const Codes::const_iterator it = codes.find(code);
205 if (it == codes.end())
206 return Config::REJECT;
210 Config::Pairs parseVector(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
212 for (size_t i = 0; i < params.size(); ++i)
213 if (params[i].param == paramName)
214 return toPairs(params[i].value);
215 return Config::Pairs();
218 Config::ReturnCode parseReturnCode(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
220 for (size_t i = 0; i < params.size(); ++i)
221 if (params[i].param == paramName)
222 return toReturnCode(params[i].value);
223 return Config::REJECT;
226 bool parseBool(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
228 for (size_t i = 0; i < params.size(); ++i)
229 if (params[i].param == paramName)
230 return toBool(params[i].value);
234 std::string parseString(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
236 for (size_t i = 0; i < params.size(); ++i)
237 if (params[i].param == paramName)
238 return toString(params[i].value);
242 std::string parseAddress(Config::Type connectionType, const std::string& value)
244 size_t pos = value.find_first_of(':');
245 if (pos == std::string::npos)
246 throw ParserError(0, "Connection type is not specified. Should be either 'unix' or 'tcp'.");
247 if (connectionType == Config::UNIX)
248 return value.substr(pos + 1);
249 std::string address(value.substr(pos + 1));
250 pos = address.find_first_of(':', pos + 1);
251 if (pos == std::string::npos)
252 throw ParserError(0, "Port is not specified.");
253 return address.substr(0, pos - 1);
256 std::string parsePort(Config::Type connectionType, const std::string& value)
258 size_t pos = value.find_first_of(':');
259 if (pos == std::string::npos)
260 throw ParserError(0, "Connection type is not specified. Should be either 'unix' or 'tcp'.");
261 if (connectionType == Config::UNIX)
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(0, "Port is not specified.");
267 return address.substr(pos + 1);
270 Config::Type parseConnectionType(const std::string& address)
272 size_t pos = address.find_first_of(':');
273 if (pos == std::string::npos)
274 throw ParserError(0, "Connection type is not specified. Should be either 'unix' or 'tcp'.");
275 std::string type = ToLower(address.substr(0, pos));
278 else if (type == "tcp")
280 throw ParserError(0, "Invalid connection type. Should be either 'unix' or 'tcp', got '" + type + "'");
283 Config::Section parseSection(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
285 for (size_t i = 0; i < params.size(); ++i)
286 if (params[i].param == paramName)
287 return Config::Section(parseVector("match", params[i].sections),
288 parseVector("modify", params[i].sections),
289 parseVector("reply", params[i].sections),
290 parseReturnCode("no_match", params[i].sections));
291 return Config::Section();
294 uid_t parseUID(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
296 for (size_t i = 0; i < params.size(); ++i)
297 if (params[i].param == paramName)
298 return toUID(params[i].value);
302 gid_t parseGID(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
304 for (size_t i = 0; i < params.size(); ++i)
305 if (params[i].param == paramName)
306 return toGID(params[i].value);
310 mode_t parseMode(const std::string& paramName, const std::vector<PARAM_VALUE>& params)
312 for (size_t i = 0; i < params.size(); ++i)
313 if (params[i].param == paramName)
314 return toMode(params[i].value);
318 } // namespace anonymous
320 Config::Config(const MODULE_SETTINGS& settings)
321 : autz(parseSection("autz", settings.moduleParams)),
322 auth(parseSection("auth", settings.moduleParams)),
323 postauth(parseSection("postauth", settings.moduleParams)),
324 preacct(parseSection("preacct", settings.moduleParams)),
325 acct(parseSection("acct", settings.moduleParams)),
326 verbose(parseBool("verbose", settings.moduleParams)),
327 address(parseString("bind_address", settings.moduleParams)),
328 connectionType(parseConnectionType(address)),
329 bindAddress(parseAddress(connectionType, address)),
330 portStr(parsePort(connectionType, address)),
331 port(toPort(portStr)),
332 key(parseString("key", settings.moduleParams)),
333 sockUID(parseUID("sock_owner", settings.moduleParams)),
334 sockGID(parseGID("sock_group", settings.moduleParams)),
335 sockMode(parseMode("sock_mode", settings.moduleParams))