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authortpearson <tpearson@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2011-09-15 02:26:04 +0000
committertpearson <tpearson@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2011-09-15 02:26:04 +0000
commit458b7cead4a2988204b0d9700a0ffc2fd6140ebf (patch)
treea4c3e92b115ef54551d02d51d20158886e0c0eb4 /kdmlib/kdmtsak.cpp
parenta382b3ab3160bc265983c538cb235eb51b87a4c5 (diff)
downloadtdebase-458b7cead4a2988204b0d9700a0ffc2fd6140ebf.tar.gz
tdebase-458b7cead4a2988204b0d9700a0ffc2fd6140ebf.zip
Add kdmtsak program
Fix possible kompmgr segfault under rare circumstances git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdebase@1253695 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
Diffstat (limited to 'kdmlib/kdmtsak.cpp')
-rw-r--r--kdmlib/kdmtsak.cpp89
1 files changed, 89 insertions, 0 deletions
diff --git a/kdmlib/kdmtsak.cpp b/kdmlib/kdmtsak.cpp
new file mode 100644
index 000000000..2c51b58e4
--- /dev/null
+++ b/kdmlib/kdmtsak.cpp
@@ -0,0 +1,89 @@
+#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 FIFO_FILE "/tmp/ksocket-global/tsak"
+
+// #define DEBUG
+
+int main (int argc, char *argv[])
+{
+ int mPipe_fd;
+ char readbuf[128];
+ int numread;
+
+ 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 == "ksmserver") || (procparent == "kdesktop_lock") || (procparent == "kdm")) {
+ // OK, the calling process is authorized to retrieve SAK data
+ // First, flush the buffer
+ mPipe_fd = open(FIFO_FILE, O_RDWR | O_NONBLOCK);
+ numread = 1;
+ while (numread > 0) {
+ numread = read(mPipe_fd, readbuf, 128);
+ }
+ // Now wait for SAK press
+ mPipe_fd = open(FIFO_FILE, O_RDWR);
+ if (mPipe_fd > -1) {
+ numread = read(mPipe_fd, readbuf, 128);
+ readbuf[numread] = 0;
+ readbuf[127] = 0;
+ close(mPipe_fd);
+ if (strcmp(readbuf, "SAK\n\r") == 0) {
+ return 0;
+ }
+ else {
+ return 1;
+ }
+ }
+ }
+ else {
+ printf("Unauthorized calling process detected\n\r");
+ return 3;
+ }
+ }
+
+ return 4;
+} \ No newline at end of file