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https://github.com/servalproject/serval-dna.git
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aa638a9bfd
Introduce CFINCOMPATIBLE config parse result flag. Sort interface rules by unsigned integer key. Legacy and modern 'interfaces' config styles are now incompatible. Validate config_network_interface struct to enforce that only exactly one of 'match' and 'dummy' options are set. Add test cases for 'interface' config option.
317 lines
14 KiB
C
317 lines
14 KiB
C
/*
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Serval DNA configuration
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Copyright (C) 2012 Serval Project Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/* This file contains definitions for the schema of the Serval DNA configuration file. See comments
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* in "config.h" for a description of the internal configuration API.
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*
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* A configuration schema is set of nested structures and arrays. By convention, the top level, or
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* root of the schema is called "main", but every structure and array has its own complete API which
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* can be used by itself. So if there were two independent configuration files, both could be
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* defined in this file, each with a conventional name for its own root element.
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*
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* A configuration file consists of lines of the form:
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*
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* FULLKEY "=" VALUE "\n"
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*
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* where FULLKEY has the form KEY [ "." KEY [ "." KEY [ ... ] ] ] and VALUE is any string not
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* containing newline. Lines ending with "\r\n" have the "\r" stripped from the end of VALUE.
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* Otherwise VALUE is preserved exactly, with all leading and trailing spaces intact.
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*
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* To describe a configuration file that looks like this:
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*
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* some.thing.element1=integer
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* some.thing.element2=string
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* some.list.foo.element1=integer
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* some.list.foo.element2=string
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* some.list.bar.element1=integer
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* some.list.bar.element2=string
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* another_thing=http://my.host.com:1234/path/to/nowhere
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*
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* the following schema would do:
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*
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* STRUCT(happy)
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* ATOM(int32_t, element1, 0, cf_opt_int32_nonnegative,, "An integer >= 0")
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* STRING(80, element2, "boo!", cf_opt_str_nonempty, MANDATORY, "A non-empty string")
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* END_STRUCT
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*
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* ARRAY(joy,)
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* KEY_STRING(3, happy, cf_opt_str)
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* VALUE_SUB_STRUCT(happy)
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* END_ARRAY(16)
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*
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* STRUCT(love)
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* SUB_STRUCT(happy, thing,)
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* SUB_STRUCT(joy, list,)
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* END_STRUCT
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*
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* STRUCT(main)
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* SUB_STRUCT(love, some,)
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* STRING(128, another_thing, "", cf_opt_uri,, "URL; protocol://hostname[:port][/path]")
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* END_STRUCT
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*
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* which would produce an API based on the following definitions (see "config.h" for more
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* information):
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*
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* struct config_happy {
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* int32_t element1;
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* char element2[81];
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* };
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* struct config_joy {
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* unsigned ac;
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* struct config_joy__element {
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* char key[4];
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* struct config_happy value;
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* } av[16];
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* };
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* struct config_love {
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* struct config_happy thing;
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* struct config_joy list;
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* };
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* struct config_main {
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* struct config_love some;
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* char another_thing[129];
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* };
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*
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* A schema definition is composed from the following STRUCT and ARRAY definitions:
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*
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* STRUCT(name[, validatorfunc])
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* element-declaration
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* element-declaration
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* ...
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* END_STRUCT
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*
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* where each element-declaration is one of:
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*
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* ATOM(type, element, default, parsefunc, flags, comment)
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* NODE(type, element, default, parsefunc, flags, comment)
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* STRING(strlen, element, default, parsefunc, flags, comment)
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* SUB_STRUCT(structname, element, flags)
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* NODE_STRUCT(structname, element, parsefunc, flags)
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*
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* ARRAY(name, flags[, validatorfunc])
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* key-declaration
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* value-declaration
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* END_ARRAY(size)
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*
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* where key-declaration is one of:
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*
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* KEY_ATOM(type, parsefunc[, comparefunc])
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* KEY_STRING(strlen, parsefunc[, comparefunc])
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*
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* and value-declaration is one of:
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*
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* VALUE_ATOM(type, parsefunc)
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* VALUE_STRING(strlen, parsefunc)
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* VALUE_NODE(type, parsefunc)
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* VALUE_SUB_STRUCT(structname)
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* VALUE_NODE_STRUCT(structname, parsefunc)
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*
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* The meanings of the parameters are:
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*
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* 'name'
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* A label used to qualify this struct/array's API from the API components of other structs and
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* arrays. This label does not appear anywhere in the config file itself; it is purely for
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* internal code-related purposes.
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* 'strlen'
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* For STRING, LABEL_STRING and VALUE_STRING, gives the maximum length of the string. The
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* string is declared as an array of char[strlen+1] to leave room for a terminating nul.
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* 'size'
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* For all ARRAYs, gives the maximum size of the array.
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* 'type'
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* Used for ATOM, NODE, LABEL_ATOM, VALUE_ATOM and VALUE_NODE declarations. Gives the C type
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* of the element. For STRING, KEY_STRING and VALUE_STRING this is implicitly a char[].
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* 'structname'
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* Only used for SUB_STRUCT, NODE_STRUCT, VALUE_SUB_STRUCT and VALUE_NODE_STRUCT declarations.
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* Identifies a sub- structure by 'name' to nest in the enclosing struct or array.
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* 'element'
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* The name of the struct element and the key in the configuration file. This name does appear
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* in the config file and also in the API, so that an option mamed "some.thing.element1" in the
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* file is referred to as some.thing.element1 in the C code. Arrays are more complicated:
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* "some.list.foo.element1" in the config file is referred to as some.list.av[n].value.element1
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* in the C code, and some.list.ac gives the size of the some.list.av array.
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* 'default'
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* Only used for ATOM and NODE struct elements. Gives the default value for the element if
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* absent from the config file.
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* 'parsefunc'
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* The function used to parse a VALUE from the config file for a STRUCT element, or a KEY or
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* VALUE for an array element. Parse functions for ATOM, STRING, KEY_ATOM, KEY_STRING,
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* VALUE_ATOM and VALUE_STRING all take a string argument (const char *) which is a
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* nul-terminated text. The parse functions for NODE, NODE_STRUCT, VALUE_NODE and
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* VALUE_NODE_STRUCT take a pointer to a COM node (const struct cf_om_node *), and are
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* responsible for parsing the node's text and all of its descendents (children).
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* 'comparefunc'
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* A function used to sort an array after all elements have been parsed, and before being
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* validated (see below).
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* 'validatorfunc'
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* A function that is called after the struct/array is fully parsed and populated. This
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* function can perform validation checks on the whole struct/array that cannot be performed by
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* the parse functions of each element in isolation, and can even alter the contents of the
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* struct/array, eg, sort an array or fill in default values in structs that depend on other
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* elements. Takes as its second argument the CFxxx code produced by the parser, and returns
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* an updated CFxxx result code (which could be the same) as documented in "config.h".
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* 'flags'
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* A space-separated list of flags. At present only the MANDATORY flag is supported, which
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* will cause parsing to fail if the given STRUCT element is not set in the config file. In
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* the case of struct elements that are arrays, the config file must set at least one element
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* of the array, or parsing fails.
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* 'comment'
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* A human-readable string describing the value of the configuration option. Must be
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* informative enough to help users diagnose parse errors. Eg, "An integer" is not enough;
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* better would be "Integer >= 0, number of seconds since Unix epoch".
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*
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* @author Andrew Bettison <andrew@servalproject.com>
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*/
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STRUCT(log)
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STRING(256, file, "", cf_opt_absolute_path,, "Absolute path of log file")
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ATOM(int, show_pid, 1, cf_opt_boolean,, "If true, all log lines contain PID of logging process")
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ATOM(int, show_time, 1, cf_opt_boolean,, "If true, all log lines contain time stamp")
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END_STRUCT
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STRUCT(server)
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STRING(256, chdir, "/", cf_opt_absolute_path,, "Absolute path of chdir(2) for server process")
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STRING(256, dummy_interface_dir, "", cf_opt_str_nonempty,, "Path of directory containing dummy interface files, either absolute or relative to instance directory")
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ATOM(int, respawn_on_crash, 0, cf_opt_boolean,, "If true, server will exec(2) itself on fatal signals, eg SEGV")
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END_STRUCT
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STRUCT(monitor)
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STRING(256, socket, DEFAULT_MONITOR_SOCKET_NAME, cf_opt_str_nonempty,, "Name of socket for monitor interface")
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ATOM(int, uid, -1, cf_opt_int,, "Allowed UID for monitor socket client")
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END_STRUCT
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STRUCT(mdp_iftype)
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ATOM(uint32_t, tick_ms, 0, cf_opt_uint32_nonzero,, "Tick interval for this interface type")
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END_STRUCT
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ARRAY(mdp_iftypelist, NO_DUPLICATES)
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KEY_ATOM(short, cf_opt_interface_type, cmp_short)
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VALUE_SUB_STRUCT(mdp_iftype)
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END_ARRAY(5)
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STRUCT(mdp_selfannounce)
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ATOM(uint32_t, ticks_per_full_address, 4, cf_opt_uint32_nonzero,, "Ticks to elapse between announcing full SID")
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END_STRUCT
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STRUCT(mdp)
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STRING(256, socket, DEFAULT_MDP_SOCKET_NAME, cf_opt_str_nonempty,, "Name of socket for MDP client interface")
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SUB_STRUCT(mdp_iftypelist, iftype,)
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SUB_STRUCT(mdp_selfannounce,selfannounce,)
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END_STRUCT
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STRUCT(olsr)
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ATOM(int, enable, 1, cf_opt_boolean,, "If true, OLSR is used for mesh routing")
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ATOM(uint16_t, remote_port,4130, cf_opt_port,, "Remote port number")
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ATOM(uint16_t, local_port, 4131, cf_opt_port,, "Local port number")
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END_STRUCT
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ARRAY(argv, SORTED NO_DUPLICATES, vld_argv)
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KEY_ATOM(unsigned short, cf_opt_ushort_nonzero, cmp_ushort)
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VALUE_STRING(128, cf_opt_str)
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END_ARRAY(16)
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STRUCT(executable)
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STRING(256, executable, "", cf_opt_absolute_path, MANDATORY, "Absolute path of dna helper executable")
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SUB_STRUCT(argv, argv,)
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END_STRUCT
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STRUCT(dna)
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SUB_STRUCT(executable, helper,)
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END_STRUCT
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STRUCT(rhizome_peer)
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STRING(25, protocol, "http", cf_opt_protocol,, "Protocol name")
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STRING(256, host, "", cf_opt_str_nonempty, MANDATORY, "Host name or IP address")
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ATOM(uint16_t, port, RHIZOME_HTTP_PORT, cf_opt_port,, "Port number")
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END_STRUCT
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ARRAY(peerlist,)
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KEY_STRING(15, cf_opt_str)
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VALUE_NODE_STRUCT(rhizome_peer, cf_opt_rhizome_peer)
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END_ARRAY(10)
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STRUCT(rhizome_direct)
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SUB_STRUCT(peerlist, peer,)
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END_STRUCT
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STRUCT(rhizome_api_addfile)
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STRING(64, uri_path, "", cf_opt_absolute_path,, "URI path for HTTP add-file request")
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ATOM(struct in_addr, allow_host, (struct in_addr){htonl(INADDR_LOOPBACK)}, cf_opt_in_addr,, "IP address of host allowed to make HTTP add-file request")
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STRING(256, manifest_template_file, "", cf_opt_str_nonempty,, "Path of manifest template file, either absolute or relative to instance directory")
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ATOM(sid_t, default_author, SID_ANY, cf_opt_sid,, "Author of add-file bundle if sender not given")
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ATOM(rhizome_bk_t, bundle_secret_key, RHIZOME_BK_NONE, cf_opt_rhizome_bk,, "Secret key of add-file bundle to try if sender not given")
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END_STRUCT
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STRUCT(rhizome_api)
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SUB_STRUCT(rhizome_api_addfile, addfile,)
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END_STRUCT
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STRUCT(rhizome)
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ATOM(int, enable, 1, cf_opt_boolean,, "If true, Rhizome HTTP server is started")
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STRING(256, datastore_path, "", cf_opt_absolute_path,, "Path of rhizome storage directory, absolute or relative to instance directory")
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ATOM(uint64_t, database_size, 1000000, cf_opt_uint64_scaled,, "Size of database in bytes")
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ATOM(uint32_t, fetch_delay_ms, 50, cf_opt_uint32_nonzero,, "Delay from receiving first bundle advert to initiating fetch")
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SUB_STRUCT(rhizome_direct, direct,)
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SUB_STRUCT(rhizome_api, api,)
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END_STRUCT
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STRUCT(directory)
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ATOM(sid_t, service, SID_ANY, cf_opt_sid,, "Subscriber ID of Serval Directory Service")
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END_STRUCT
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STRUCT(host)
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STRING(INTERFACE_NAME_STRLEN, interface, "", cf_opt_str_nonempty, MANDATORY, "Interface name")
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ATOM(struct in_addr, address, (struct in_addr){htonl(INADDR_NONE)}, cf_opt_in_addr, MANDATORY, "Host IP address")
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ATOM(uint16_t, port, PORT_DNA, cf_opt_port,, "Port number")
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END_STRUCT
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ARRAY(host_list, NO_DUPLICATES)
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KEY_ATOM(sid_t, cf_opt_sid, cmp_sid)
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VALUE_SUB_STRUCT(host)
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END_ARRAY(32)
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STRUCT(network_interface, vld_network_interface)
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ATOM(int, exclude, 0, cf_opt_boolean,, "If true, do not use matching interfaces")
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ATOM(struct pattern_list, match, PATTERN_LIST_EMPTY, cf_opt_pattern_list,, "Names that match network interface")
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STRING(256, dummy, "", cf_opt_str_nonempty,, "Path of dummy file, absolute or relative to server.dummy_interface_dir")
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ATOM(short, type, OVERLAY_INTERFACE_WIFI, cf_opt_interface_type,, "Type of network interface")
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ATOM(uint16_t, port, RHIZOME_HTTP_PORT, cf_opt_port,, "Port number for network interface")
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ATOM(uint64_t, speed, 1000000, cf_opt_uint64_scaled,, "Speed in bits per second")
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ATOM(int, mdp_tick_ms, -1, cf_opt_int32_nonneg,, "Override MDP tick interval for this interface")
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END_STRUCT
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ARRAY(interface_list, SORTED NO_DUPLICATES)
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KEY_ATOM(unsigned, cf_opt_uint)
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VALUE_NODE_STRUCT(network_interface, cf_opt_network_interface)
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END_ARRAY(10)
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// The top level.
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STRUCT(main)
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NODE_STRUCT(interface_list, interfaces, cf_opt_interface_list,)
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SUB_STRUCT(log, log,)
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SUB_STRUCT(server, server,)
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SUB_STRUCT(monitor, monitor,)
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SUB_STRUCT(mdp, mdp,)
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SUB_STRUCT(dna, dna,)
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NODE(debugflags_t, debug, 0, cf_opt_debugflags, USES_CHILDREN, "Debug flags")
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SUB_STRUCT(rhizome, rhizome,)
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SUB_STRUCT(directory, directory,)
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SUB_STRUCT(olsr, olsr,)
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SUB_STRUCT(host_list, hosts,)
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END_STRUCT
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