2 * Copyright (c) 2002-2003 M. Warner Losh.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * var_list is a collection of variables. These collections of variables
36 * are stacked up and popped down for each event that we have to process.
37 * We have multiple levels so that we can push variables that are unique
38 * to the event in question, in addition to having global variables. This
39 * allows for future flexibility.
45 virtual ~var_list() {}
46 /** Set a variable in this var list.
48 void set_variable(const std::string &var, const std::string &val);
49 /** Get the variable out of this, and no other, var_list. If
50 * no variable of %var is set, then %bogus will be returned.
52 const std::string &get_variable(const std::string &var) const;
53 /** Is there a variable of %var set in thi stable?
55 bool is_set(const std::string &var) const;
56 /** A completely bogus string.
58 static const std::string bogus;
59 static const std::string nothing;
61 std::map<std::string, std::string> _vars;
65 * eps is short for event_proc_single. It is a single entry in an
66 * event_proc. Each keyword needs its own subclass from eps.
73 /** Does this eps match the current config?
75 virtual bool do_match(config &) = 0;
76 /** Perform some action for this eps.
78 virtual bool do_action(config &) = 0;
82 * match is the subclass used to match an individual variable. Its
85 class match : public eps
88 match(config &, const char *var, const char *re);
90 virtual bool do_match(config &);
91 virtual bool do_action(config &) { return true; }
99 * action is used to fork a process. It matches everything.
101 class action : public eps
104 action(const char *cmd);
106 virtual bool do_match(config &) { return true; }
107 virtual bool do_action(config &);
116 virtual ~event_proc();
117 int get_priority() const { return (_prio); }
118 void set_priority(int prio) { _prio = prio; }
120 bool matches(config &);
124 std::vector<eps *> _epsvec;
130 config() : _pidfile("") { push_var_table(); }
131 virtual ~config() { reset(); }
132 void add_attach(int, event_proc *);
133 void add_detach(int, event_proc *);
134 void add_directory(const char *);
135 void add_nomatch(int, event_proc *);
136 void add_notify(int, event_proc *);
137 void set_pidfile(const char *);
141 void push_var_table();
142 void pop_var_table();
143 void set_variable(const char *var, const char *val);
144 const std::string &get_variable(const std::string &var);
145 const std::string expand_string(const std::string &var);
146 char *set_vars(char *);
147 void find_and_execute(char);
149 void sort_vector(std::vector<event_proc *> &);
150 void parse_one_file(const char *fn);
151 void parse_files_in_dir(const char *dirname);
152 void expand_one(const char *&src, std::string &dst);
153 bool is_id_char(char);
154 bool chop_var(char *&buffer, char *&lhs, char *&rhs);
156 std::vector<std::string> _dir_list;
157 std::string _pidfile;
158 std::vector<var_list *> _var_list_table;
159 std::vector<event_proc *> _attach_list;
160 std::vector<event_proc *> _detach_list;
161 std::vector<event_proc *> _nomatch_list;
162 std::vector<event_proc *> _notify_list;