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/*
Copyright (c) 2013, Matthias Schiffer <mschiffer@universe-factory.net>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "context.hpp"
#include "network.hpp"
#include "node.hpp"
#include "protocol.hpp"
#include <config.ll.hpp>
#include <config.yy.hpp>
#include <cstdio>
#include <stack>
#include <libgen.h>
#include <unistd.h>
namespace MMSS {
bool config_t::load_proto(const char *name, const char *module, bool def) {
if (protos.find(name) != protos.end()) {
mmss->logf(LOG_ERR, "config error: duplicate protocol `%s'", name);
return false;
}
std::shared_ptr<const protocol_t> proto = protocol_t::load(mmss, module);
if (!proto)
return false;
if (def)
default_proto = proto;
protos.insert(std::make_pair(name, std::move(proto)));
return true;
}
bool config_t::add_network(const char *name) {
if (networks.find(name) != networks.end()) {
mmss->logf(LOG_ERR, "config error: duplicate network `%s'", name);
return false;
}
networks.insert(std::make_pair(name, std::make_shared<network_t>(name)));
return true;
}
bool config_t::add_node(const char *name, const char *proto) {
if (nodes.find(name) != nodes.end()) {
mmss->logf(LOG_ERR, "config error: duplicate node `%s'", name);
return false;
}
const std::shared_ptr<const protocol_t> *proto_ptr = &default_proto;
if (proto) {
auto it = protos.find(proto);
if (it == protos.end()) {
mmss->logf(LOG_ERR, "config error: no protocol `%s' found", proto);
return false;
}
proto_ptr = &it->second;
}
if (!*proto_ptr) {
mmss->logf(LOG_ERR, "config error: node `%s': no protocol given and no default protocol defined", name);
return false;
}
current_node = &nodes.insert(std::make_pair(name, node_t::create(mmss, name, rand_seed++, *proto_ptr))).first->second;
return true;
}
bool config_t::add_iface(const char *name, const char *net, const gmrf_addr_t *addr) {
// TODO duplicate name, address check
auto it = networks.find(net);
if (it == networks.end()) {
mmss->logf(LOG_ERR, "config error: no network `%s' found", net);
return false;
}
iface_t::add(*current_node, it->second, name, addr);
return true;
}
std::shared_ptr<const config_t> config_t::read(context_t *mmss, const char *filename) {
std::shared_ptr<config_t> conf = std::shared_ptr<config_t>(new config_t(mmss));
char *oldcwd = get_current_dir_name();
char *filename2 = NULL;
char *dir = NULL;
FILE *file;
yyscan_t scanner;
mmss_config_pstate *ps;
int token;
YYSTYPE token_val;
YYLTYPE loc = {1, 0, 1, 0};
int parse_ret;
std::stack<char*> strings;
mmss_config_yylex_init(&scanner);
ps = mmss_config_pstate_new();
if (!filename) {
file = stdin;
}
else {
file = fopen(filename, "r");
if (!file) {
mmss->logf(LOG_ERR, "can't open config file `%s': %s", filename, strerror(errno));
conf.reset();
goto end_free;
}
}
mmss_config_yyset_in(file, scanner);
if (filename) {
filename2 = strdup(filename);
dir = dirname(filename2);
if (chdir(dir)) {
mmss->logf(LOG_ERR, "change from directory `%s' to `%s' failed", oldcwd, dir);
conf.reset();
goto end_free;
}
}
do {
token = mmss_config_yylex(&token_val, &loc, scanner);
if (token < 0) {
mmss->logf(LOG_ERR, "config error: %s at %s:%i:%i", token_val.error, filename, loc.first_line, loc.first_column);
conf.reset();
goto end_free;
}
if (token == TOK_STRING)
strings.push(token_val.str);
parse_ret = mmss_config_push_parse(ps, token, &token_val, &loc, conf, filename);
} while (parse_ret == YYPUSH_MORE);
if (parse_ret)
conf.reset();
end_free:
while (!strings.empty()) {
std::free(strings.top());
strings.pop();
}
mmss_config_pstate_delete(ps);
mmss_config_yylex_destroy(scanner);
if(chdir(oldcwd))
mmss->logf(LOG_ERR, "can't chdir to `%s': %s", oldcwd, strerror(errno));
std::free(filename2);
std::free(oldcwd);
if (filename && file)
std::fclose(file);
return conf;
}
}
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