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663996b3 MS |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <sys/socket.h> | |
23 | #include <sys/poll.h> | |
24 | #include <sys/types.h> | |
25 | #include <assert.h> | |
26 | #include <string.h> | |
27 | #include <errno.h> | |
28 | #include <unistd.h> | |
29 | #include <fcntl.h> | |
30 | #include <sys/un.h> | |
31 | #include <sys/stat.h> | |
32 | #include <sys/signalfd.h> | |
33 | #include <getopt.h> | |
34 | #include <stddef.h> | |
35 | ||
36 | #include "log.h" | |
37 | #include "macro.h" | |
38 | #include "util.h" | |
39 | ||
40 | static int send_on_socket(int fd, const char *socket_name, const void *packet, size_t size) { | |
41 | union { | |
42 | struct sockaddr sa; | |
43 | struct sockaddr_un un; | |
44 | } sa = { | |
45 | .un.sun_family = AF_UNIX, | |
46 | }; | |
47 | ||
48 | assert(fd >= 0); | |
49 | assert(socket_name); | |
50 | assert(packet); | |
51 | ||
52 | strncpy(sa.un.sun_path, socket_name, sizeof(sa.un.sun_path)); | |
53 | ||
f47781d8 MP |
54 | if (sendto(fd, packet, size, MSG_NOSIGNAL, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(socket_name)) < 0) |
55 | return log_error_errno(errno, "Failed to send: %m"); | |
663996b3 MS |
56 | |
57 | return 0; | |
58 | } | |
59 | ||
60 | int main(int argc, char *argv[]) { | |
61 | int fd = -1, r = EXIT_FAILURE; | |
62 | char packet[LINE_MAX]; | |
63 | size_t length; | |
64 | ||
65 | log_set_target(LOG_TARGET_AUTO); | |
66 | log_parse_environment(); | |
67 | log_open(); | |
68 | ||
69 | if (argc != 3) { | |
70 | log_error("Wrong number of arguments."); | |
71 | goto finish; | |
72 | } | |
73 | ||
74 | if (streq(argv[1], "1")) { | |
75 | ||
76 | packet[0] = '+'; | |
77 | if (!fgets(packet+1, sizeof(packet)-1, stdin)) { | |
f47781d8 | 78 | log_error_errno(errno, "Failed to read password: %m"); |
663996b3 MS |
79 | goto finish; |
80 | } | |
81 | ||
82 | truncate_nl(packet+1); | |
83 | length = 1 + strlen(packet+1) + 1; | |
84 | } else if (streq(argv[1], "0")) { | |
85 | packet[0] = '-'; | |
86 | length = 1; | |
87 | } else { | |
88 | log_error("Invalid first argument %s", argv[1]); | |
89 | goto finish; | |
90 | } | |
91 | ||
60f067b4 JS |
92 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); |
93 | if (fd < 0) { | |
f47781d8 | 94 | log_error_errno(errno, "socket() failed: %m"); |
663996b3 MS |
95 | goto finish; |
96 | } | |
97 | ||
98 | if (send_on_socket(fd, argv[2], packet, length) < 0) | |
99 | goto finish; | |
100 | ||
101 | r = EXIT_SUCCESS; | |
102 | ||
103 | finish: | |
60f067b4 | 104 | safe_close(fd); |
663996b3 MS |
105 | |
106 | return r; | |
107 | } |