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/* SLiM - Simple Login Manager
Copyright (C) 1997, 1998 Per Liden
Copyright (C) 2004-06 Simone Rota <sip@varlock.com>
Copyright (C) 2004-06 Johannes Winkelmann <jw@tks6.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
*/
#include <cstdio>
#include "switchuser.h"
#include "util.h"
using namespace std;
SwitchUser::SwitchUser(struct passwd *pw, Cfg *c, const string& display,
char** _env)
: cfg(c),
Pw(pw),
displayName(display),
env(_env)
{
}
SwitchUser::~SwitchUser() {
/* Never called */
}
void SwitchUser::Login(const char* cmd, const char* mcookie) {
SetUserId();
SetClientAuth(mcookie);
Execute(cmd);
}
void SwitchUser::SetUserId() {
if( (Pw == 0) ||
(initgroups(Pw->pw_name, Pw->pw_gid) != 0) ||
(setgid(Pw->pw_gid) != 0) ||
(setuid(Pw->pw_uid) != 0) ) {
logStream << APPNAME << ": could not switch user id" << endl;
exit(ERR_EXIT);
}
}
void SwitchUser::Execute(const char* cmd) {
chdir(Pw->pw_dir);
execle(Pw->pw_shell, Pw->pw_shell, "-c", cmd, NULL, env);
logStream << APPNAME << ": could not execute login command" << endl;
}
void SwitchUser::SetClientAuth(const char* mcookie) {
string home = string(Pw->pw_dir);
string authfile = home + "/.Xauthority";
remove(authfile.c_str());
Util::add_mcookie(mcookie, ":0", cfg->getOption("xauth_path"),
authfile);
}
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