2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2002-2003 M. Warner Losh <imp@FreeBSD.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * var_list is a collection of variables. These collections of variables
37 * are stacked up and popped down for each event that we have to process.
38 * We have multiple levels so that we can push variables that are unique
39 * to the event in question, in addition to having global variables. This
40 * allows for future flexibility.
45 /** Set a variable in this var list.
47 void set_variable(const std::string &var, const std::string &val);
48 /** Get the variable out of this, and no other, var_list. If
49 * no variable of %var is set, then %bogus will be returned.
51 const std::string &get_variable(const std::string &var) const;
52 /** Is there a variable of %var set in this table?
54 bool is_set(const std::string &var) const;
55 /** A completely bogus string.
57 static const std::string bogus;
58 static const std::string nothing;
61 std::string fix_value(const std::string &val) const;
63 std::map<std::string, std::string> _vars;
67 * eps is short for event_proc_single. It is a single entry in an
68 * event_proc. Each keyword needs its own subclass from eps.
74 /** Does this eps match the current config?
76 virtual bool do_match(config &) = 0;
77 /** Perform some action for this eps.
79 virtual bool do_action(config &) = 0;
83 * match is the subclass used to match an individual variable. Its
86 class match : public eps
89 match(config &, const char *var, const char *re);
91 virtual bool do_match(config &);
92 virtual bool do_action(config &) { return true; }
101 * media is the subclass used to match an individual variable. Its
104 class media : public eps
107 media(config &, const char *var, const char *type);
109 virtual bool do_match(config &);
110 virtual bool do_action(config &) { return true; }
117 * action is used to fork a process. It matches everything.
119 class action : public eps
122 action(const char *cmd);
124 virtual bool do_match(config &) { return true; }
125 virtual bool do_action(config &);
134 virtual ~event_proc();
135 int get_priority() const { return (_prio); }
136 void set_priority(int prio) { _prio = prio; }
138 bool matches(config &) const;
139 bool run(config &) const;
142 std::vector<eps *> _epsvec;
148 config() { push_var_table(); }
149 virtual ~config() { reset(); }
150 void add_attach(int, event_proc *);
151 void add_detach(int, event_proc *);
152 void add_directory(const char *);
153 void add_nomatch(int, event_proc *);
154 void add_notify(int, event_proc *);
155 void set_pidfile(const char *);
158 void close_pidfile();
160 void write_pidfile();
161 void remove_pidfile();
162 void push_var_table();
163 void pop_var_table();
164 void set_variable(const char *var, const char *val);
165 const std::string &get_variable(const std::string &var);
166 const std::string expand_string(const char * var,
167 const char * prepend = NULL, const char * append = NULL);
168 char *set_vars(char *);
169 void find_and_execute(char);
171 void sort_vector(std::vector<event_proc *> &);
172 void parse_one_file(const char *fn);
173 void parse_files_in_dir(const char *dirname);
174 void expand_one(const char *&src, std::string &dst, bool is_shell);
175 std::string shell_quote(const std::string &s);
176 bool is_id_char(char) const;
177 bool chop_var(char *&buffer, char *&lhs, char *&rhs) const;
179 std::vector<std::string> _dir_list;
180 std::string _pidfile;
181 std::vector<var_list *> _var_list_table;
182 std::vector<event_proc *> _attach_list;
183 std::vector<event_proc *> _detach_list;
184 std::vector<event_proc *> _nomatch_list;
185 std::vector<event_proc *> _notify_list;