x11 detection support for --audit

1 files changed, 62 insertions, 0 deletions

diff --git a/src/faudit/x11.c b/src/faudit/x11.c
new file mode 100644
index 000000000..e1a4bf66e
--- /dev/null
+++ b/src/faudit/x11.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2014-2016 Firejail Authors
+ *
+ * This file is part of firejail project
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+#include "faudit.h"
+#include <sys/socket.h>
+#include <dirent.h>
+
+
+void x11_test(void) {
+        // check regular display 0 sockets
+        if (check_unix("/tmp/.X11-unix/X0") == 0)
+                printf("MAYBE: X11 socket /tmp/.X11-unix/X0 is available\n");
+
+        if (check_unix("@/tmp/.X11-unix/X0") == 0)
+                printf("MAYBE: X11 socket @/tmp/.X11-unix/X0 is available\n");
+                
+        // check all unix sockets in /tmp/.X11-unix directory
+        DIR *dir;
+        if (!(dir = opendir("/tmp/.X11-unix"))) {
+                // sleep 2 seconds and try again
+                sleep(2);
+                if (!(dir = opendir("/tmp/.X11-unix")))
+                        ;
+        }
+        
+        if (dir == NULL)
+                printf("GOOD: cannot open /tmp/.X11-unix directory\n");
+        else {
+                struct dirent *entry;
+                while ((entry = readdir(dir)) != NULL) {
+                        if (strcmp(entry->d_name, "X0") == 0)
+                                continue;
+                        if (strcmp(entry->d_name, ".") == 0)
+                                continue;
+                        if (strcmp(entry->d_name, "..") == 0)
+                                continue;
+                        char *name;
+                        if (asprintf(&name, "/tmp/.X11-unix/%s", entry->d_name) == -1)
+                                errExit("asprintf");
+                        if (check_unix(name) == 0)
+                                printf("MAYBE: X11 socket %s is available\n", name);
+                        free(name);
+                }
+                closedir(dir);
+        }
+}