2 files changed, 131 insertions, 0 deletions
diff --git a/src/systemd-reply-password/Makefile b/src/systemd-reply-password/Makefile
new file mode 100644
index 0000000000..cf5923da07
--- /dev/null
+++ b/src/systemd-reply-password/Makefile
@@ -0,0 +1,33 @@
+#  -*- Mode: makefile; indent-tabs-mode: t -*-
+#
+#  This file is part of systemd.
+#
+#  Copyright 2010-2012 Lennart Poettering
+#  Copyright 2010-2012 Kay Sievers
+#  Copyright 2013 Zbigniew Jędrzejewski-Szmek
+#  Copyright 2013 David Strauss
+#  Copyright 2016 Luke Shumaker
+#
+#  systemd is free software; you can redistribute it and/or modify it
+#  under the terms of the GNU Lesser General Public License as published by
+#  the Free Software Foundation; either version 2.1 of the License, or
+#  (at your option) any later version.
+#
+#  systemd 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
+#  Lesser General Public License for more details.
+#
+#  You should have received a copy of the GNU Lesser General Public License
+#  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+include $(dir $(lastword $(MAKEFILE_LIST)))/../../config.mk
+include $(topsrcdir)/build-aux/Makefile.head.mk
+
+systemd_reply_password_SOURCES = \
+	src/reply-password/reply-password.c
+
+systemd_reply_password_LDADD = \
+	libshared.la
+
+$(eval $(value automake2autothing))
+include $(topsrcdir)/build-aux/Makefile.tail.mk
diff --git a/src/systemd-reply-password/reply-password.c b/src/systemd-reply-password/reply-password.c
new file mode 100644
index 0000000000..e291758969
--- /dev/null
+++ b/src/systemd-reply-password/reply-password.c
@@ -0,0 +1,98 @@
+/***
+  This file is part of systemd.
+
+  Copyright 2010 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd 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
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+#include <stddef.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include "fd-util.h"
+#include "log.h"
+#include "macro.h"
+#include "string-util.h"
+#include "util.h"
+
+static int send_on_socket(int fd, const char *socket_name, const void *packet, size_t size) {
+        union {
+                struct sockaddr sa;
+                struct sockaddr_un un;
+        } sa = {
+                .un.sun_family = AF_UNIX,
+        };
+
+        assert(fd >= 0);
+        assert(socket_name);
+        assert(packet);
+
+        strncpy(sa.un.sun_path, socket_name, sizeof(sa.un.sun_path));
+
+        if (sendto(fd, packet, size, MSG_NOSIGNAL, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(socket_name)) < 0)
+                return log_error_errno(errno, "Failed to send: %m");
+
+        return 0;
+}
+
+int main(int argc, char *argv[]) {
+        _cleanup_close_ int fd = -1;
+        char packet[LINE_MAX];
+        size_t length;
+        int r;
+
+        log_set_target(LOG_TARGET_AUTO);
+        log_parse_environment();
+        log_open();
+
+        if (argc != 3) {
+                log_error("Wrong number of arguments.");
+                return EXIT_FAILURE;
+        }
+
+        if (streq(argv[1], "1")) {
+
+                packet[0] = '+';
+                if (!fgets(packet+1, sizeof(packet)-1, stdin)) {
+                        r = log_error_errno(errno, "Failed to read password: %m");
+                        goto finish;
+                }
+
+                truncate_nl(packet+1);
+                length = 1 + strlen(packet+1) + 1;
+        } else if (streq(argv[1], "0")) {
+                packet[0] = '-';
+                length = 1;
+        } else {
+                log_error("Invalid first argument %s", argv[1]);
+                r = -EINVAL;
+                goto finish;
+        }
+
+        fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
+        if (fd < 0) {
+                r = log_error_errno(errno, "socket() failed: %m");
+                goto finish;
+        }
+
+        r = send_on_socket(fd, argv[2], packet, length);
+
+finish:
+        memory_erase(packet, sizeof(packet));
+
+        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+}