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// file : mod/mod-packages.cxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#include <mod/mod-packages.hxx>
#include <libstudxml/serializer.hxx>
#include <odb/session.hxx>
#include <odb/database.hxx>
#include <odb/transaction.hxx>
#include <odb/schema-catalog.hxx>
#include <web/server/module.hxx>
#include <web/server/mime-url-encoding.hxx>
#include <web/xhtml/serialization.hxx>
#include <libbrep/package.hxx>
#include <libbrep/package-odb.hxx>
#include <mod/page.hxx>
#include <mod/module-options.hxx>
using namespace odb::core;
using namespace brep::cli;
// While currently the user-defined copy constructor is not required (we don't
// need to deep copy nullptr's), it is a good idea to keep the placeholder
// ready for less trivial cases.
//
brep::packages::
packages (const packages& r)
: database_module (r),
options_ (r.initialized_ ? r.options_ : nullptr)
{
}
void brep::packages::
init (scanner& s)
{
HANDLER_DIAG;
options_ = make_shared<options::packages> (
s, unknown_mode::fail, unknown_mode::fail);
database_module::init (*options_, options_->package_db_retry ());
if (options_->root ().empty ())
options_->root (dir_path ("/"));
// Check that the database 'package' schema matches the current one. It's
// enough to perform the check in just a single module implementation (and
// we don't do in the dispatcher because it doesn't use the database).
//
// Note that the failure can be reported by each web server worker process.
// While it could be tempting to move the check to the
// repository_root::version() function, it would be wrong. The function can
// be called by a different process (usually the web server root one) not
// having the proper permissions to access the database.
//
const string ds ("package");
if (schema_catalog::current_version (*package_db_, ds) !=
package_db_->schema_version (ds))
fail << "database 'package' schema differs from the current one (module "
<< BREP_VERSION_ID << ")";
}
template <typename T>
static inline query<T>
search_param (const brep::string& q, const brep::optional<brep::string>& t)
{
using query = query<T>;
return "(" +
(q.empty ()
? query ("NULL")
: "plainto_tsquery (" + query::_val (q) + ")") +
"," +
(!t ? query ("NULL") : query (query::_val (*t))) +
")";
}
bool brep::packages::
handle (request& rq, response& rs)
{
using namespace web::xhtml;
HANDLER_DIAG;
const size_t res_page (options_->search_page_entries ());
const dir_path& root (options_->root ());
const string& title (options_->search_title ());
const string& tenant_name (options_->tenant_name ());
params::packages params;
try
{
name_value_scanner s (rq.parameters (8 * 1024));
params = params::packages (s, unknown_mode::fail, unknown_mode::fail);
}
catch (const cli::exception& e)
{
throw invalid_request (400, e.what ());
}
size_t page (params.page ());
const string& squery (params.q ());
string equery (web::mime_url_encode (squery));
xml::serializer s (rs.content (), title);
s << HTML
<< HEAD
<< TITLE
<< title;
if (!squery.empty ())
s << " " << squery;
s << ~TITLE
<< CSS_LINKS (path ("packages.css"), root)
//
// This hack is required to avoid the "flash of unstyled content", which
// happens due to the presence of the autofocus attribute in the input
// element of the search form. The problem appears in Firefox and has a
// (4-year old, at the time of this writing) bug report:
//
// https://bugzilla.mozilla.org/show_bug.cgi?id=712130
//
// @@ An update: claimed to be fixed in Firefox 60 that is released in
// May 2018. Is it time to cleanup? Remember to cleanup in all places.
//
<< SCRIPT << " " << ~SCRIPT
<< ~HEAD
<< BODY
<< DIV_HEADER (options_->logo (), options_->menu (), root, tenant)
<< DIV(ID="content");
// If the tenant is empty then we are in the global view and will display
// packages from all the public tenants.
//
optional<string> tn;
if (!tenant.empty ())
tn = tenant;
session sn;
transaction t (package_db_->begin ());
auto pkg_count (
package_db_->query_value<latest_package_count> (
search_param<latest_package_count> (squery, tn)));
s << FORM_SEARCH (squery, "packages")
<< DIV_COUNTER (pkg_count, "Package", "Packages");
// Enclose the subsequent tables to be able to use nth-child CSS selector.
//
s << DIV;
for (const auto& pr:
package_db_->query<latest_package_search_rank> (
search_param<latest_package_search_rank> (squery, tn) +
"ORDER BY rank DESC, name, tenant" +
"OFFSET" + to_string (page * res_page) +
"LIMIT" + to_string (res_page)))
{
shared_ptr<package> p (package_db_->load<package> (pr.id));
s << TABLE(CLASS="proplist package")
<< TBODY
<< TR_NAME (p->name, equery, root, p->tenant)
<< TR_SUMMARY (p->summary)
<< TR_LICENSE (p->license_alternatives)
<< TR_DEPENDS (p->dependencies, root, p->tenant)
<< TR_REQUIRES (p->requirements);
// In the global view mode add the tenant packages link. Note that the
// global view (and the link) makes sense only in the multi-tenant mode.
//
if (!tn && !p->tenant.empty ())
s << TR_TENANT (tenant_name, "packages", root, p->tenant);
s << ~TBODY
<< ~TABLE;
}
s << ~DIV;
t.commit ();
string url (tenant_dir (root, tenant).string () + "?packages");
if (!equery.empty ())
{
url += '=';
url += equery;
}
s << DIV_PAGER (page,
pkg_count,
res_page,
options_->search_pages (),
url)
<< ~DIV
<< ~BODY
<< ~HTML;
return true;
}
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