faudit: dbus

1 files changed, 74 insertions, 0 deletions

diff --git a/src/faudit/dbus.c b/src/faudit/dbus.c
new file mode 100644
index 000000000..5f25e7312
--- /dev/null
+++ b/src/faudit/dbus.c
@@ -0,0 +1,74 @@
+/*
+ * 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 <sys/un.h>
+
+void check_session_bus(const char *sockfile) {
+        assert(sockfile);
+        
+        // open socket
+        int sock = socket(AF_UNIX, SOCK_STREAM, 0);
+        if (sock == -1) {
+                printf("GOOD: I cannot connect to session bus. If the application misbehaves, please log a bug with the application developer.\n");
+                return;
+        }
+
+        // connect
+        struct sockaddr_un remote;
+        memset(&remote, 0, sizeof(struct sockaddr_un));
+        remote.sun_family = AF_UNIX;
+        strcpy(remote.sun_path, sockfile);
+        int len = strlen(remote.sun_path) + sizeof(remote.sun_family);
+        remote.sun_path[0] = '\0';
+        if (connect(sock, (struct sockaddr *)&remote, len) == -1) {
+                printf("GOOD: I cannot connect to session bus. If the application misbehaves, please log a bug with the application developer.\n");
+        }
+        else {
+                printf("MAYBE: I can connect to session bus. If this is undesirable, use \"--private-tmp\" or blacklist the socket file.\n");
+        }       
+
+        close(sock);
+}
+
+void dbus_test(void) {
+        // check the session bus
+        char *str = getenv("DBUS_SESSION_BUS_ADDRESS");
+        if (str) {
+                char *bus = strdup(str);
+                if (!bus)
+                        errExit("strdup");
+                char *sockfile = strstr(bus, "unix:abstract=");
+                if (sockfile) {
+                        sockfile += 13;
+                        *sockfile = '@';
+                        char *ptr = strchr(sockfile, ',');
+                        if (ptr) {
+                                *ptr = '\0';    
+                                check_session_bus(sockfile);
+                        }
+                        sockfile -= 13;
+                        free(sockfile);
+                }
+        }
+}
+
+
+