4 // Fraunhofer Institute for Open Communication Systems (FOKUS)
5 // Competence Center NETwork research (NET), St. Augustin, GERMANY
6 // Stefan Bund <g0dil@berlios.de>
8 // This program is free software; you can redistribute it and/or modify
9 // it under the terms of the GNU General Public License as published by
10 // the Free Software Foundation; either version 2 of the License, or
11 // (at your option) any later version.
13 // This program is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 // GNU General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the
20 // Free Software Foundation, Inc.,
21 // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 \brief Executor public header */
27 #define HH_Executor_ 1
30 #include <boost/utility.hpp>
32 #include "../Utils/Logger/SenfLog.hh"
35 //#include "Executor.mpp"
36 ///////////////////////////////hh.p////////////////////////////////////////
41 /** \brief Execute config/console commands
43 The Executor interprets parsed config/console commands and executes them. It manages the
44 current execution context (current directory, directory stack and so on).
46 The executor is normally called directly by the parser callback for each command.
48 Executing the built-in 'exit' command will throw Executor::ExitException. This exception
49 (which is not derived from std::exception since it's not a real exception) must be handled
52 All directories are managed using weak pointers. If any of the directories expires (current
53 directory, directory stack, last directory) it will be replaced with the root
54 directory. Directories expire when they are destructed or when they are detached from the
55 config tree root node.
60 SENF_LOG_CLASS_AREA();
61 SENF_LOG_DEFAULT_LEVEL( senf::log::VERBOSE );
63 ///////////////////////////////////////////////////////////////////////////
66 /// Thrown by built-in 'exit' command
67 struct ExitException {};
69 /// Executor policy function
70 typedef boost::function<void (DirectoryNode &,std::string const &)> SecurityPolicy;
72 /// Thrown by the SecurityPolicy to silently ignore a command
73 struct IgnoreCommandException {};
75 ///////////////////////////////////////////////////////////////////////////
76 //\/name Structors and default members
82 ///////////////////////////////////////////////////////////////////////////
84 void execute(std::ostream & output, ParseCommandInfo const & command);
86 /**< Output will be written to \a output.
87 Same as operator()(). */
89 void operator()(std::ostream & output, ParseCommandInfo const & command);
91 /**< Output will be written to \a output.
93 DirectoryNode & cwd() const; ///< Current working directory
94 std::string cwdPath() const; ///< Return pathname of current directory
95 bool skipping() const; ///< \c true, if currently skipping a directory group
97 bool autocd() const; ///< Get current autocd status
98 /**< if autocd is enabled, specifying a directory name as
99 command will cd to that directory. Disabled by
100 default (but enabled automatically by the interactive
102 Executor & autocd(bool v); ///< Set autocd status
103 /**< \see autocd() */
105 bool autocomplete() const; ///< Get current autocomplete status
106 /**< if autocomplete is enabled, path components which can
107 be uniquely completed will be completed
108 automatically. Disabled by default (but enabled
109 automatically by the interactive console) void
110 autocomplete(bool v). */
112 Executor & autocomplete(bool v); ///< Set autocomplete status
113 /**< \see autocomplete() */
115 DirectoryNode & chroot() const; ///< Get root node
116 /**< The root node defaults to senf::console::root(). If
117 changed, all path references are relative to this node
118 and objects outside that tree cannot be accessed. */
119 Executor & chroot(DirectoryNode & node); ///< chroot into given directory
120 /**< After this call, all path's are interpreted relative to
121 \a node and only nodes in the tree rooted at \a node
122 are accessible via the executor. This value defaults to
123 senf::console::root(). */
125 Executor & policy(SecurityPolicy policy = SecurityPolicy()); ///< Set security policy
126 /**< The security policy is called before traversing a node
127 to validate that access. */
132 typedef std::vector<DirectoryNode::weak_ptr> Path;
134 void exec(std::ostream & output, ParseCommandInfo const & command);
136 void cd(ParseCommandInfo::TokensRange dir);
137 void ls(std::ostream & output, ParseCommandInfo::TokensRange dir);
138 void pushd(ParseCommandInfo::TokensRange dir);
141 void help(std::ostream & output, ParseCommandInfo::TokensRange path);
143 GenericNode & traverseNode(ParseCommandInfo::TokensRange const & path);
144 void traverseDirectory(ParseCommandInfo::TokensRange const & path,
147 struct InvalidPathException {};
148 struct InvalidDirectoryException {};
149 struct InvalidCommandException {};
151 DirectoryNode::ptr root_;
152 SecurityPolicy policy_;
156 typedef std::vector<Path> DirStack;
165 ///////////////////////////////hh.e////////////////////////////////////////
166 #include "Executor.cci"
167 //#include "Executor.ct"
168 //#include "Executor.cti"
175 // comment-column: 40
176 // c-file-style: "senf"
177 // indent-tabs-mode: nil
178 // ispell-local-dictionary: "american"
179 // compile-command: "scons -u test"