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/*
* script.hh - Implementation of the Script class
* libhscript, the HorizonScript library for
* Project Horizon
*
* Copyright (c) 2019 Adélie Linux and contributors. All rights reserved.
* This code is licensed under the AGPL 3.0 license, as noted in the
* LICENSE-code file in the root directory of this repository.
*
* SPDX-License-Identifier: AGPL-3.0-only
*/
#include <algorithm>
#include <fstream>
#include <iostream>
#include <map>
#include "script.hh"
#include "disk.hh"
#include "meta.hh"
#include "network.hh"
#include "user.hh"
#include "util/output.hh"
#define LINE_MAX 512
typedef Horizon::Keys::Key *(*key_parse_fn)(std::string, int, int*, int*);
const std::map<std::string, key_parse_fn> valid_keys = {
{"network", &Horizon::Keys::Network::parseFromData},
{"hostname", &Horizon::Keys::Hostname::parseFromData},
{"pkginstall", &Horizon::Keys::PkgInstall::parseFromData},
{"rootpw", &Horizon::Keys::RootPassphrase::parseFromData},
{"language", &Horizon::Keys::Language::parseFromData},
{"keymap", &Horizon::Keys::Keymap::parseFromData},
{"firmware", &Horizon::Keys::Firmware::parseFromData},
{"timezone", &Horizon::Keys::Timezone::parseFromData},
{"repository", &Horizon::Keys::Repository::parseFromData},
{"signingkey", &Horizon::Keys::SigningKey::parseFromData},
{"netaddress", &Horizon::Keys::NetAddress::parseFromData},
{"nameserver", &Horizon::Keys::Nameserver::parseFromData},
{"netssid", &Horizon::Keys::NetSSID::parseFromData},
{"username", &Horizon::Keys::Username::parseFromData},
{"useralias", &Horizon::Keys::UserAlias::parseFromData},
{"userpw", &Horizon::Keys::UserPassphrase::parseFromData},
{"usericon", &Horizon::Keys::UserIcon::parseFromData},
{"usergroups", &Horizon::Keys::UserGroups::parseFromData},
{"diskid", &Horizon::Keys::DiskId::parseFromData},
{"disklabel", &Horizon::Keys::DiskLabel::parseFromData},
{"partition", &Horizon::Keys::Partition::parseFromData},
{"lvm_pv", &Horizon::Keys::LVMPhysical::parseFromData},
{"lvm_vg", &Horizon::Keys::LVMGroup::parseFromData},
{"lvm_lv", &Horizon::Keys::LVMVolume::parseFromData},
{"encrypt", &Horizon::Keys::Encrypt::parseFromData},
{"fs", &Horizon::Keys::Filesystem::parseFromData},
{"mount", &Horizon::Keys::Mount::parseFromData}
};
namespace Horizon {
struct Script::ScriptPrivate {
/*! Determines whether or not to enable networking. */
std::unique_ptr<Horizon::Keys::Network> network;
/*! The target system's hostname. */
std::unique_ptr<Horizon::Keys::Hostname> hostname;
/*! The packages to install to the target system. */
std::vector<std::string> packages;
/*! The root shadow line. */
std::unique_ptr<Horizon::Keys::RootPassphrase> rootpw;
/*! Target system's mountpoints. */
std::vector< std::unique_ptr<Horizon::Keys::Mount> > mounts;
/*! Store +key_obj+ representing the key +key_name+.
* @param key_name The name of the key that is being stored.
* @param key_obj The Key object associated with the key.
* @param errors Output parameter: if given, incremented on error.
* @param warnings Output parameter: if given, incremented on warning.
*/
bool store_key(const std::string key_name, Keys::Key *key_obj, int lineno,
int *errors, int *warnings) {
if(key_name == "network") {
if(this->network) {
std::string err_str("previous value was ");
err_str += this->network->test() ? "true" : "false";
err_str += " at installfile:";
err_str += std::to_string(this->network->lineno());
if(errors) *errors += 1;
output_error("installfile:" + std::to_string(lineno),
"'network' key has already been specified",
err_str);
return false;
}
std::unique_ptr<Keys::Network> net(dynamic_cast<Keys::Network *>(key_obj));
this->network = std::move(net);
return true;
} else if(key_name == "hostname") {
/*! TODO: implement */
return false;
} else if(key_name == "pkginstall") {
/*! TODO: implement */
return false;
} else if(key_name == "rootpw") {
/*! TODO: implement */
return false;
} else {
return false;
}
}
};
Script::Script() {
internal = new ScriptPrivate;
}
const Script *Script::load(const std::string path, const ScriptOptions opts) {
std::ifstream file(path);
if(!file) {
output_error(path, "Cannot open installfile", "",
(opts.test(Pretty)));
return nullptr;
}
return Script::load(file, opts);
}
#define PARSER_ERROR(err_str) \
errors++;\
output_error("installfile:" + std::to_string(lineno),\
err_str, "", (opts.test(Pretty)));\
if(!opts.test(ScriptOptionFlags::KeepGoing)) {\
break;\
}
#define PARSER_WARNING(warn_str) \
warnings++;\
output_warning("installfile:" + std::to_string(lineno),\
warn_str, "", (opts.test(Pretty)));
const Script *Script::load(std::istream &sstream, const ScriptOptions opts) {
using namespace Horizon::Keys;
Script *the_script = new Script;
int lineno = 0;
char nextline[LINE_MAX];
const std::string delim(" \t");
int errors = 0, warnings = 0;
while(sstream.getline(nextline, sizeof(nextline))) {
lineno++;
if(nextline[0] == '#') {
/* This is a comment line; ignore it. */
continue;
}
const std::string line(nextline);
std::string key;
std::string::size_type start, key_end, value_begin;
start = line.find_first_not_of(delim);
if(start == std::string::npos) {
/* This is a blank line; ignore it. */
continue;
}
key_end = line.find_first_of(delim, start);
value_begin = line.find_first_not_of(delim, key_end);
key = line.substr(start, key_end);
if(key_end == std::string::npos || value_begin == std::string::npos) {
/* Key without value */
PARSER_ERROR("key '" + key + "' has no value")
}
/* Normalise key to lower-case */
std::transform(key.begin(), key.end(), key.begin(), ::tolower);
if(valid_keys.find(key) == valid_keys.end()) {
/* Invalid key */
if(opts.test(StrictMode)) {
PARSER_ERROR("key '" + key + "' is not defined")
} else {
PARSER_WARNING("key '" + key + "' is not defined")
}
continue;
}
Key *key_obj = valid_keys.at(key)(line.substr(value_begin), lineno,
&errors, &warnings);
if(!key_obj) {
PARSER_ERROR("value for key '" + key + "' was invalid")
continue;
}
if(!the_script->internal->store_key(key, key_obj, lineno, &errors,
&warnings)) {
PARSER_ERROR("stopping due to prior errors")
continue;
}
}
if(sstream.fail() && !sstream.eof()) {
output_error("installfile:" + std::to_string(lineno + 1),
"line exceeds maximum length",
"Maximum line length is " + std::to_string(LINE_MAX),
(opts.test(Pretty)));
errors++;
}
if(sstream.bad() && !sstream.eof()) {
output_error("installfile:" + std::to_string(lineno),
"I/O error while reading installfile", "",
(opts.test(Pretty)));
errors++;
}
output_message("parser", "0", "installfile",
std::to_string(errors) + " error(s), " +
std::to_string(warnings) + " warning(s).",
"", opts.test(Pretty));
if(errors > 0) {
delete the_script;
return nullptr;
} else {
return the_script;
}
}
bool Script::validate() const {
return false;
}
}
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