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/**
* This file is part of the KDE project
* Copyright (C) 2008 Michael Leupold <lemma@confuego.org>
* Copyright (C) 2014 Alejandro Fiestas Olivares <afiestas@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License version 2 as published by the Free Software Foundation.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <kuniqueapplication.h>
#include <kaboutdata.h>
#include <kcmdlineargs.h>
#include <kdebug.h>
#include <kconfig.h>
#include <kconfiggroup.h>
#include <klocale.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include "kwalletd.h"
#include "backend/kwalletbackend.h" //For the hash size
#define BSIZE 1000
static int pipefd = 0;
static int socketfd = 0;
static bool isWalletEnabled()
{
KConfig cfg("kwalletrc");
KConfigGroup walletGroup(&cfg, "Wallet");
return walletGroup.readEntry("Enabled", true);
}
//Waits until the PAM_MODULE sends the hash
static char *waitForHash()
{
printf("kwalletd: Waiting for hash on %d-\n", pipefd);
int totalRead = 0;
int readBytes = 0;
int attemps = 0;
char *buf = (char*)malloc(sizeof(char) * PBKDF2_SHA512_KEYSIZE);
memset(buf, '\0', PBKDF2_SHA512_KEYSIZE);
while(totalRead != PBKDF2_SHA512_KEYSIZE) {
readBytes = read(pipefd, buf + totalRead, PBKDF2_SHA512_KEYSIZE - totalRead);
if (readBytes == -1 || attemps > 5) {
free(buf);
return NULL;
}
totalRead += readBytes;
++attemps;
}
close(pipefd);
return buf;
}
//Waits until startkde sends the environment variables
static int waitForEnvironment()
{
printf("kwalletd: waitingForEnvironment on: %d\n", socketfd);
int s2;
struct sockaddr_un remote;
socklen_t t = sizeof(remote);
if ((s2 = accept(socketfd, (struct sockaddr *)&remote, &t)) == -1) {
fprintf(stdout, "kwalletd: Couldn't accept incoming connection\n");
return -1;
}
printf("kwalletd: client connected\n");
char str[BSIZE];
memset(str, '\0', sizeof(char) * BSIZE);
int chop = 0;
FILE *s3 = fdopen(s2, "r");
while(!feof(s3)) {
if (fgets(str, BSIZE, s3)) {
chop = strlen(str) - 1;
str[chop] = '\0';
putenv(strdup(str));
}
}
printf("kwalletd: client disconnected\n");
close(socketfd);
return 1;
}
char* checkPamModule(int argc, char **argv)
{
printf("Checking for pam module\n");
char *hash = NULL;
int x = 1;
for (; x < argc; ++x) {
if (strcmp(argv[x], "--pam-login") != 0) {
continue;
}
printf("Got pam-login\n");
argv[x] = NULL;
x++;
//We need at least 2 extra arguments after --pam-login
if (x + 1 > argc) {
printf("Invalid arguments (less than needed)\n");
return NULL;
}
//first socket for the hash, comes from a pipe
pipefd = atoi(argv[x]);
argv[x] = NULL;
x++;
//second socket for environemtn, comes from a localsock
socketfd = atoi(argv[x]);
argv[x] = NULL;
break;
}
if (!pipefd || !socketfd) {
printf("Lacking a socket, pipe: %d, env:%d\n", pipefd, socketfd);
return NULL;
}
hash = waitForHash();
if (hash == NULL || waitForEnvironment() == -1) {
printf("Hash or environment not received\n");
return NULL;
}
return hash;
}
extern "C" KDE_EXPORT int kdemain(int argc, char **argv)
{
char *hash = NULL;
if (getenv("PAM_KWALLET_LOGIN")) {
hash = checkPamModule(argc, argv);
}
KAboutData aboutdata("kwalletd", 0, ki18n("KDE Wallet Service"),
"0.2", ki18n("KDE Wallet Service"),
KAboutData::License_LGPL, ki18n("(C) 2002-2008 George Staikos, Michael Leupold, Thiago Maceira, Valentin Rusu"));
aboutdata.addAuthor(ki18n("Michael Leupold"),ki18n("Maintainer"),"lemma@confuego.org");
aboutdata.addAuthor(ki18n("George Staikos"),ki18n("Former maintainer"),"staikos@kde.org");
aboutdata.addAuthor(ki18n("Thiago Maceira"),ki18n("D-Bus Interface"),"thiago@kde.org");
aboutdata.addAuthor(ki18n("Valentin Rusu"),ki18n("GPG backend support"),"kde@rusu.info");
aboutdata.setProgramIconName("kwalletmanager");
KCmdLineArgs::init( argc, argv, &aboutdata );
KUniqueApplication::addCmdLineOptions();
KUniqueApplication app;
// This app is started automatically, no need for session management
app.disableSessionManagement();
app.setQuitOnLastWindowClosed( false );
// check if kwallet is disabled
if (!isWalletEnabled()) {
kDebug() << "kwalletd is disabled!";
return (0);
}
if (!KUniqueApplication::start())
{
kDebug() << "kwalletd is already running!";
return (0);
}
kDebug() << "kwalletd started";
KWalletD walletd;
if (hash) {
kDebug() << "LOGIN INSIDE!";
QByteArray passHash(hash, PBKDF2_SHA512_KEYSIZE);
int wallet = walletd.pamOpen(KWallet::Wallet::LocalWallet(), passHash, 0);
kDebug() << "Wallet handler: " << wallet;
free(hash);
} else {
kDebug() << "Not pam login";
}
return app.exec();
}
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