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#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;
}
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