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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2012-01-22 01:02:36 -0600
committerTimothy Pearson <kb9vqf@pearsoncomputing.net>2012-01-22 01:02:36 -0600
commitb81e43465b14836b17e4fe2dea91c78a2bdd29b3 (patch)
tree7815d61ce59a6ccb6e655ed44f5fea786f520985 /kdmlib/kdmtsak.h
parent7021f40c13f949b7cb5ded32d0241d648a43bf6c (diff)
downloadtdebase-b81e43465b14836b17e4fe2dea91c78a2bdd29b3.tar.gz
tdebase-b81e43465b14836b17e4fe2dea91c78a2bdd29b3.zip
Part 2 of prior commit
Diffstat (limited to 'kdmlib/kdmtsak.h')
-rw-r--r--kdmlib/kdmtsak.h144
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diff --git a/kdmlib/kdmtsak.h b/kdmlib/kdmtsak.h
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--- a/kdmlib/kdmtsak.h
+++ /dev/null
@@ -1,144 +0,0 @@
-/*
- This file is part of the TDE project
- Copyright (C) 2011 Timothy Pearson <kb9vqf@pearsoncomputing.net>
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
-
- 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 <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <dirent.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/select.h>
-#include <sys/time.h>
-#include <termios.h>
-#include <signal.h>
-
-#include <tqstring.h>
-
-#include "config.h"
-
-// #define DEBUG
-
-inline int tde_sak_verify_calling_process()
-{
- bool authorized = false;
-
- // Root always has access to everything...
- if (getuid() == 0) {
- return 0;
- }
-
- pid_t parentproc = getppid();
-#ifdef DEBUG
- printf("Parent pid is: %d\n\r", parentproc);
-#endif
-
- char parentexecutable[8192];
- TQString procparent = TQString("/proc/%1/exe").arg(parentproc);
- int chars = readlink(procparent.ascii(), parentexecutable, sizeof(parentexecutable));
- parentexecutable[chars] = 0;
- parentexecutable[8191] = 0;
- procparent = parentexecutable;
-#ifdef DEBUG
- printf("Parent executable name and full path is: %s\n\r", procparent.ascii());
-#endif
-
- TQString tdeBinaryPath = TQString(KDE_BINDIR "/");
-#ifdef DEBUG
- printf("The TDE binary path is: %s\n\r", tdeBinaryPath.ascii());
-#endif
-
- if (!procparent.startsWith(tdeBinaryPath)) {
- printf("Unauthorized path detected in calling process\n\r");
- return 2;
- }
- else {
- procparent = procparent.mid(tdeBinaryPath.length());
-#ifdef DEBUG
- printf("Parent executable name is: %s\n\r", procparent.ascii());
-#endif
- if ((procparent == "kdesktop") || (procparent == "kdesktop_lock") || (procparent == "tdm")) {
- authorized = true;
- }
- else if (procparent == "tdeinit") {
- printf("tdeinit detected\n\r");
- // A bit more digging is needed to see if this is an authorized process or not
- // Get the tdeinit command
- char tdeinitcmdline[8192];
- FILE *fp = fopen(TQString("/proc/%1/cmdline").arg(parentproc).ascii(),"r");
- if (fp != NULL) {
- if (fgets (tdeinitcmdline, 8192, fp) != NULL)
- fclose (fp);
- }
- tdeinitcmdline[8191] = 0;
- TQString tdeinitCommand = tdeinitcmdline;
-
- // Also get the environment, specifically the path
- TQString tdeinitEnvironment;
- char tdeinitenviron[8192];
- fp = fopen(TQString("/proc/%1/environ").arg(parentproc).ascii(),"r");
- if (fp != NULL) {
- int c;
- int pos = 0;
- do {
- c = fgetc(fp);
- tdeinitenviron[pos] = c;
- pos++;
- if (c == 0) {
- TQString curEnvLine = tdeinitenviron;
- if (curEnvLine.startsWith("PATH=")) {
- tdeinitEnvironment = curEnvLine.mid(5);
- }
- pos = 0;
- }
- } while ((c != EOF) && (pos < 8192));
- fclose (fp);
- }
- tdeinitenviron[8191] = 0;
-
-#ifdef DEBUG
- printf("Called executable name is: %s\n\r", tdeinitCommand.ascii());
- printf("Environment is: %s\n\r", tdeinitEnvironment.ascii());
-#endif
-
- if ((tdeinitCommand == "kdesktop [tdeinit]") && (tdeinitEnvironment.startsWith(KDE_BINDIR))) {
- authorized = true;
- }
- else {
- return 4;
- }
- }
- else {
- printf("Unauthorized calling process detected\n\r");
- return 3;
- }
-
- if (authorized == true) {
- return 0;
- }
- }
-
- return 5;
-}
-
-#undef DEBUG \ No newline at end of file