forked from mirrors/nixpkgs
106 lines
2.5 KiB
Diff
106 lines
2.5 KiB
Diff
|
--- origin/main.c 2016-12-12 12:53:38.344285376 +0100
|
||
|
+++ main.c 2016-12-12 13:01:41.134548824 +0100
|
||
|
@@ -26,11 +26,13 @@
|
||
|
#include <string.h>
|
||
|
|
||
|
#ifdef USE_UNIX_REDIRECTION
|
||
|
-#define DEVNULL ">/dev/null 2>&1"
|
||
|
+#define DEVNULL "/dev/null"
|
||
|
#else
|
||
|
-#define DEVNULL ">NUL 2>&1"
|
||
|
+#define DEVNULL "NUL"
|
||
|
#endif
|
||
|
|
||
|
+#include <errno.h>
|
||
|
+
|
||
|
#include "crack.h"
|
||
|
|
||
|
int use_unzip;
|
||
|
@@ -47,21 +49,77 @@
|
||
|
int REGPARAM
|
||
|
check_unzip (const char *pw)
|
||
|
{
|
||
|
- char buff[1024];
|
||
|
- int status;
|
||
|
+pid_t cpid;
|
||
|
+cpid = fork ();
|
||
|
+if (cpid == -1)
|
||
|
+ {
|
||
|
+ perror ("fork");
|
||
|
+ exit (EXIT_FAILURE);
|
||
|
+ }
|
||
|
+
|
||
|
+if (cpid == 0)
|
||
|
+ {
|
||
|
+ // Redirect STDERR/STDOUT to /dev/null
|
||
|
+ int oldfd_stderr, oldfd_stdout;
|
||
|
+ oldfd_stdout = dup (fileno (stdout));
|
||
|
+ if (oldfd_stdout == -1)
|
||
|
+ {
|
||
|
+ perror ("dup for stdout");
|
||
|
+ _exit (127);
|
||
|
+ }
|
||
|
+ oldfd_stderr = dup (fileno (stderr));
|
||
|
+ if (oldfd_stderr == -1)
|
||
|
+ {
|
||
|
+ perror ("dup for stderr");
|
||
|
+ _exit (127);
|
||
|
+ }
|
||
|
+ if (freopen (DEVNULL, "w", stdout) == NULL)
|
||
|
+ {
|
||
|
+ perror ("freopen " DEVNULL " for stdout");
|
||
|
+ _exit (127);
|
||
|
+ }
|
||
|
+ if (freopen (DEVNULL, "w", stderr) == NULL)
|
||
|
+ {
|
||
|
+ perror ("freopen " DEVNULL " for stderr");
|
||
|
+ _exit (127);
|
||
|
+ }
|
||
|
+ execlp ("unzip", "unzip", "-qqtP", pw, file_path[0], NULL);
|
||
|
+
|
||
|
+ // When execlp failed.
|
||
|
+ // Restores the stderr/stdout redirection to print an error.
|
||
|
+ int errno_saved = errno;
|
||
|
+ dup2 (oldfd_stderr, fileno (stderr));
|
||
|
+ dup2 (oldfd_stdout, fileno (stdout));
|
||
|
+ close (oldfd_stderr);
|
||
|
+ close (oldfd_stdout);
|
||
|
+ errno = errno_saved;
|
||
|
+ perror ("execlp for unzip");
|
||
|
+ _exit (127); // Returns 127 on error as system(3) does
|
||
|
+ }
|
||
|
|
||
|
- sprintf (buff, "unzip -qqtP \"%s\" %s " DEVNULL, pw, file_path[0]);
|
||
|
- status = system (buff);
|
||
|
-
|
||
|
-#undef REDIR
|
||
|
+ int status;
|
||
|
|
||
|
- if (status == EXIT_SUCCESS)
|
||
|
+ if (waitpid (cpid, &status, 0) == -1)
|
||
|
{
|
||
|
- printf("\n\nPASSWORD FOUND!!!!: pw == %s\n", pw);
|
||
|
+ perror ("waitpid");
|
||
|
+ exit (EXIT_FAILURE);
|
||
|
+ }
|
||
|
+
|
||
|
+ // The child process does not terminated normally, OR returns the exit status 127.
|
||
|
+ if (!WIFEXITED (status)
|
||
|
+ || (WIFEXITED (status) && (WEXITSTATUS (status) == 127)))
|
||
|
+ {
|
||
|
+ fprintf (stderr, "Executing unzip failed.\n");
|
||
|
+ exit (EXIT_FAILURE);
|
||
|
+ }
|
||
|
+// unzip exited normally with the exit status 0 then...
|
||
|
+ if (WIFEXITED (status) && (WEXITSTATUS (status) == EXIT_SUCCESS))
|
||
|
+ {
|
||
|
+ printf ("\n\nPASSWORD FOUND!!!!: pw == %s\n", pw);
|
||
|
exit (EXIT_SUCCESS);
|
||
|
}
|
||
|
|
||
|
- return !status;
|
||
|
+ return 0;
|
||
|
}
|
||
|
|
||
|
/* misc. callbacks. */
|