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// file : mod/build-config-module.cxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#include <mod/build-config-module.hxx>
#include <errno.h> // EIO
#include <map>
#include <sstream>
#include <libbutl/sha256.mxx>
#include <libbutl/utility.mxx> // throw_generic_error()
#include <libbutl/openssl.mxx>
#include <libbutl/filesystem.mxx> // dir_iterator, dir_entry
namespace brep
{
using namespace std;
using namespace butl;
using namespace bpkg;
using namespace bbot;
// Return pointer to the shared build configurations instance, creating one
// on the first call. Throw tab_parsing on parsing error, io_error on the
// underlying OS error. Note: not thread-safe.
//
static shared_ptr<const build_configs>
shared_build_config (const path& p)
{
static map<path, weak_ptr<build_configs>> configs;
auto i (configs.find (p));
if (i != configs.end ())
{
if (shared_ptr<build_configs> c = i->second.lock ())
return c;
}
shared_ptr<build_configs> c (
make_shared<build_configs> (parse_buildtab (p)));
configs[p] = c;
return c;
}
// Return pointer to the shared build bot agent public keys map, creating
// one on the first call. Throw system_error on the underlying openssl or OS
// error. Note: not thread-safe.
//
using bot_agent_key_map = map<string, path>;
static shared_ptr<const bot_agent_key_map>
shared_bot_agent_keys (const options::openssl_options& o, const dir_path& d)
{
static map<dir_path, weak_ptr<bot_agent_key_map>> keys;
auto i (keys.find (d));
if (i != keys.end ())
{
if (shared_ptr<bot_agent_key_map> k = i->second.lock ())
return k;
}
shared_ptr<bot_agent_key_map> ak (make_shared<bot_agent_key_map> ());
// Intercept exception handling to make error descriptions more
// informative.
//
// Path of the key being converted. Used for diagnostics.
//
path p;
try
{
for (const dir_entry& de: dir_iterator (d, false /* ignore_dangling */))
{
if (de.path ().extension () == "pem" &&
de.type () == entry_type::regular)
{
p = d / de.path ();
openssl os (p, path ("-"), 2,
process_env (o.openssl (), o.openssl_envvar ()),
"pkey",
o.openssl_option (), "-pubin", "-outform", "DER");
string fp (sha256 (os.in).string ());
os.in.close ();
if (!os.wait ())
throw io_error ("");
ak->emplace (move (fp), move (p));
}
}
}
catch (const io_error&)
{
ostringstream os;
os << "unable to convert bbot agent pubkey " << p;
throw_generic_error (EIO, os.str ().c_str ());
}
catch (const process_error& e)
{
ostringstream os;
os << "unable to convert bbot agent pubkey " << p;
throw_generic_error (e.code ().value (), os.str ().c_str ());
}
catch (const system_error& e)
{
ostringstream os;
os<< "unable to iterate over agents keys directory '" << d << "'";
throw_generic_error (e.code ().value (), os.str ().c_str ());
}
keys[d] = ak;
return ak;
}
void build_config_module::
init (const options::build& bo)
{
try
{
build_conf_ = shared_build_config (bo.build_config ());
}
catch (const io_error& e)
{
ostringstream os;
os << "unable to read build configuration '" << bo.build_config ()
<< "': " << e;
throw_generic_error (EIO, os.str ().c_str ());
}
if (bo.build_bot_agent_keys_specified ())
bot_agent_key_map_ =
shared_bot_agent_keys (bo, bo.build_bot_agent_keys ());
cstrings conf_names;
using conf_map_type = map<const char*,
const build_config*,
compare_c_string>;
conf_map_type conf_map;
for (const auto& c: *build_conf_)
{
const char* cn (c.name.c_str ());
conf_map[cn] = &c;
conf_names.push_back (cn);
}
build_conf_names_ = make_shared<cstrings> (move (conf_names));
build_conf_map_ = make_shared<conf_map_type> (move (conf_map));
}
bool build_config_module::
belongs (const bbot::build_config& cfg, const char* cls) const
{
const map<string, string>& im (build_conf_->class_inheritance_map);
for (const string& c: cfg.classes)
{
if (c == cls)
return true;
// Go through base classes.
//
for (auto i (im.find (c)); i != im.end (); )
{
const string& base (i->second);
if (base == cls)
return true;
i = im.find (base);
}
}
return false;
}
}
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