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exheredrey
Exheredludis/paludis/repositories/accounts/passwd_accounts_handler.cc
Saleem Abdulrasool 3f2aca298c C++11: auto convert to nullptr via cpp11-migrate 
This is a blanket migration via the clang C++11 migration tool to convert NULL
pointer to nullptr usage.

Signed-off-by: Saleem Abdulrasool <compnerd@compnerd.org>
2013-06-23 11:59:55 -07:00

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/* vim: set sw=4 sts=4 et foldmethod=syntax : */
/*
* Copyright (c) 2009, 2010, 2011 Ciaran McCreesh
*
* This file is part of the Paludis package manager. Paludis is free software;
* you can redistribute it and/or modify it under the terms of the GNU General
* Public License version 2, as published by the Free Software Foundation.
*
* Paludis is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <paludis/repositories/accounts/passwd_accounts_handler.hh>
#include <paludis/util/system.hh>
#include <paludis/util/stringify.hh>
#include <paludis/util/visitor_cast.hh>
#include <paludis/util/set.hh>
#include <paludis/util/destringify.hh>
#include <paludis/util/join.hh>
#include <paludis/util/process.hh>
#include <paludis/output_manager.hh>
#include <paludis/action.hh>
#include <paludis/repository.hh>
#include <paludis/metadata_key.hh>
#include <paludis/package_id.hh>
#include <sys/types.h>
#include <pwd.h>
#include <grp.h>
using namespace paludis;
using namespace paludis::accounts_repository;
void
PasswdAccountsHandler::merge(const MergeParams & params)
{
Context context("When installing '" + stringify(*params.package_id()) + "':");
params.output_manager()->stdout_stream() << ">>> Installing " << *params.package_id() << " using passwd handler" << std::endl;
if (params.package_id()->end_metadata() != params.package_id()->find_metadata("groupname"))
merge_group(params);
else
merge_user(params);
params.output_manager()->stdout_stream() << ">>> Finished installing " << *params.package_id() << std::endl;
}
void
PasswdAccountsHandler::merge_user(const MergeParams & params)
{
std::string username;
do
{
PackageID::MetadataConstIterator m(params.package_id()->find_metadata("username"));
if (params.package_id()->end_metadata() == m)
throw ActionFailedError("Key 'username' for '" + stringify(*params.package_id()) + "' does not exist");
const MetadataValueKey<std::string> * k(visitor_cast<const MetadataValueKey<std::string> >(**m));
if (! k)
throw ActionFailedError("Key 'username' for '" + stringify(*params.package_id()) + "' is not a string key");
username = k->parse_value();
if (nullptr != getpwnam(username.c_str()))
throw ActionFailedError("User '" + username + "' already exists");
} while (false);
std::string gecos;
do
{
PackageID::MetadataConstIterator m(params.package_id()->find_metadata("gecos"));
if (params.package_id()->end_metadata() == m)
break;
const MetadataValueKey<std::string> * k(visitor_cast<const MetadataValueKey<std::string> >(**m));
if (! k)
throw ActionFailedError("Key 'gecos' for '" + stringify(*params.package_id()) + "' is not a string key");
gecos = k->parse_value();
if (std::string::npos != gecos.find('\''))
throw ActionFailedError("Value for key 'gecos' for '" + stringify(*params.package_id()) + "' must not contain a quote");
if (! gecos.empty())
gecos = " -c '" + gecos + "'";
} while (false);
std::string preferred_uid;
do
{
PackageID::MetadataConstIterator m(params.package_id()->find_metadata("preferred_uid"));
if (params.package_id()->end_metadata() == m)
break;
const MetadataValueKey<std::string> * k(visitor_cast<const MetadataValueKey<std::string> >(**m));
if (! k)
throw ActionFailedError("Key 'preferred_uid' for '" + stringify(*params.package_id()) + "' is not a string key");
preferred_uid = k->parse_value();
if (std::string::npos != preferred_uid.find_first_not_of("0123456789"))
throw ActionFailedError("Value for key 'preferred_uid' for '" + stringify(*params.package_id()) + "' must be a number");
uid_t uid(destringify<uid_t>(preferred_uid));
if (getpwuid(uid))
{
params.output_manager()->stdout_stream() << ">>> Preferred UID " << uid << " already in use, not specifying an ID" << std::endl;
preferred_uid = "";
}
if (! preferred_uid.empty())
preferred_uid = " -u '" + preferred_uid + "'";
} while (false);
std::string primary_group;
do
{
PackageID::MetadataConstIterator m(params.package_id()->find_metadata("primary_group"));
if (params.package_id()->end_metadata() == m)
break;
const MetadataValueKey<std::string> * k(visitor_cast<const MetadataValueKey<std::string> >(**m));
if (! k)
throw ActionFailedError("Key 'primary_group' for '" + stringify(*params.package_id()) + "' is not a string key");
primary_group = k->parse_value();
if (std::string::npos != primary_group.find('\''))
throw ActionFailedError("Value for key 'primary_group' for '" + stringify(*params.package_id()) + "' must not contain a quote");
if (! primary_group.empty())
primary_group = " -g '" + primary_group + "'";
} while (false);
std::string extra_groups;
do
{
PackageID::MetadataConstIterator m(params.package_id()->find_metadata("extra_groups"));
if (params.package_id()->end_metadata() == m)
break;
const MetadataCollectionKey<Set<std::string> > * k(visitor_cast<const MetadataCollectionKey<Set<std::string> > >(**m));
if (! k)
throw ActionFailedError("Key 'extra_groups' for '" + stringify(*params.package_id()) + "' is not a string set key");
auto v(k->parse_value());
extra_groups = join(v->begin(), v->end(), ",");
if (std::string::npos != extra_groups.find('\''))
throw ActionFailedError("Value for key 'extra_groups' for '" + stringify(*params.package_id()) + "' must not contain a quote");
if (! extra_groups.empty())
extra_groups = " -G '" + extra_groups + "'";
} while (false);
std::string shell;
do
{
PackageID::MetadataConstIterator m(params.package_id()->find_metadata("shell"));
if (params.package_id()->end_metadata() == m)
break;
const MetadataValueKey<std::string> * k(visitor_cast<const MetadataValueKey<std::string> >(**m));
if (! k)
throw ActionFailedError("Key 'shell' for '" + stringify(*params.package_id()) + "' is not a string key");
shell = k->parse_value();
if (std::string::npos != shell.find('\''))
throw ActionFailedError("Value for key 'shell' for '" + stringify(*params.package_id()) + "' must not contain a quote");
if (! shell.empty())
shell = " -s '" + shell + "'";
} while (false);
std::string home;
do
{
PackageID::MetadataConstIterator m(params.package_id()->find_metadata("home"));
if (params.package_id()->end_metadata() == m)
break;
const MetadataValueKey<std::string> * k(visitor_cast<const MetadataValueKey<std::string> >(**m));
if (! k)
throw ActionFailedError("Key 'home' for '" + stringify(*params.package_id()) + "' is not a string key");
home = k->parse_value();
if (std::string::npos != home.find('\''))
throw ActionFailedError("Value for key 'home' for '" + stringify(*params.package_id()) + "' must not contain a quote");
if (! home.empty())
home = " -d '" + home + "'";
} while (false);
Process process(ProcessCommand({ "sh", "-c", "useradd -r " + username + preferred_uid + gecos + primary_group + extra_groups + shell + home }));
process.echo_command_to(params.output_manager()->stderr_stream());
int exit_status(process.run().wait());
if (0 != exit_status)
throw ActionFailedError("Install of '" + stringify(*params.package_id()) + "' failed because useradd returned "
+ stringify(exit_status));
}
void
PasswdAccountsHandler::merge_group(const MergeParams & params)
{
std::string groupname;
do
{
PackageID::MetadataConstIterator m(params.package_id()->find_metadata("groupname"));
if (params.package_id()->end_metadata() == m)
throw ActionFailedError("Key 'groupname' for '" + stringify(*params.package_id()) + "' does not exist");
const MetadataValueKey<std::string> * k(visitor_cast<const MetadataValueKey<std::string> >(**m));
if (! k)
throw ActionFailedError("Key 'groupname' for '" + stringify(*params.package_id()) + "' is not a string key");
groupname = k->parse_value();
if (nullptr != getgrnam(groupname.c_str()))
throw ActionFailedError("Group '" + groupname + "' already exists");
} while (false);
std::string preferred_gid;
do
{
PackageID::MetadataConstIterator m(params.package_id()->find_metadata("preferred_gid"));
if (params.package_id()->end_metadata() == m)
break;
const MetadataValueKey<std::string> * k(visitor_cast<const MetadataValueKey<std::string> >(**m));
if (! k)
throw ActionFailedError("Key 'preferred_gid' for '" + stringify(*params.package_id()) + "' is not a string key");
preferred_gid = k->parse_value();
if (std::string::npos != preferred_gid.find_first_not_of("0123456789"))
throw ActionFailedError("Value for key 'preferred_gid' for '" + stringify(*params.package_id()) + "' must be a number");
uid_t gid(destringify<uid_t>(preferred_gid));
if (getgrgid(gid))
{
params.output_manager()->stdout_stream() << ">>> Preferred GID " << gid << " already in use, not specifying an ID" << std::endl;
preferred_gid = "";
}
if (! preferred_gid.empty())
preferred_gid = " -g '" + preferred_gid + "'";
} while (false);
Process process(ProcessCommand({ "sh", "-c", "groupadd -r " + groupname + preferred_gid }));
process.echo_command_to(params.output_manager()->stderr_stream());
int exit_status(process.run().wait());
if (0 != exit_status)
throw ActionFailedError("Install of '" + stringify(*params.package_id()) + "' failed because groupadd returned "
+ stringify(exit_status));
}
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