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490aed58 LP |
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 | |
5430f7f2 LP |
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 | |
490aed58 LP |
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 | |
5430f7f2 | 16 | Lesser General Public License for more details. |
490aed58 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
490aed58 LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
490aed58 | 22 | #include <errno.h> |
0e098b15 | 23 | #include <stddef.h> |
07630cea LP |
24 | #include <string.h> |
25 | #include <sys/socket.h> | |
26 | #include <sys/un.h> | |
490aed58 LP |
27 | |
28 | #include "log.h" | |
29 | #include "macro.h" | |
07630cea | 30 | #include "string-util.h" |
490aed58 LP |
31 | #include "util.h" |
32 | ||
33 | static int send_on_socket(int fd, const char *socket_name, const void *packet, size_t size) { | |
34 | union { | |
35 | struct sockaddr sa; | |
36 | struct sockaddr_un un; | |
b92bea5d ZJS |
37 | } sa = { |
38 | .un.sun_family = AF_UNIX, | |
39 | }; | |
490aed58 LP |
40 | |
41 | assert(fd >= 0); | |
42 | assert(socket_name); | |
43 | assert(packet); | |
44 | ||
ec863ba6 | 45 | strncpy(sa.un.sun_path, socket_name, sizeof(sa.un.sun_path)); |
490aed58 | 46 | |
4a62c710 MS |
47 | if (sendto(fd, packet, size, MSG_NOSIGNAL, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(socket_name)) < 0) |
48 | return log_error_errno(errno, "Failed to send: %m"); | |
490aed58 LP |
49 | |
50 | return 0; | |
51 | } | |
52 | ||
53 | int main(int argc, char *argv[]) { | |
1602b008 | 54 | _cleanup_close_ int fd = -1; |
490aed58 LP |
55 | char packet[LINE_MAX]; |
56 | size_t length; | |
1602b008 | 57 | int r; |
490aed58 | 58 | |
4cfa2c99 | 59 | log_set_target(LOG_TARGET_AUTO); |
490aed58 LP |
60 | log_parse_environment(); |
61 | log_open(); | |
62 | ||
63 | if (argc != 3) { | |
64 | log_error("Wrong number of arguments."); | |
1602b008 | 65 | return EXIT_FAILURE; |
490aed58 LP |
66 | } |
67 | ||
68 | if (streq(argv[1], "1")) { | |
69 | ||
70 | packet[0] = '+'; | |
71 | if (!fgets(packet+1, sizeof(packet)-1, stdin)) { | |
1602b008 | 72 | r = log_error_errno(errno, "Failed to read password: %m"); |
490aed58 LP |
73 | goto finish; |
74 | } | |
75 | ||
76 | truncate_nl(packet+1); | |
d55f4f3f | 77 | length = 1 + strlen(packet+1) + 1; |
490aed58 LP |
78 | } else if (streq(argv[1], "0")) { |
79 | packet[0] = '-'; | |
80 | length = 1; | |
81 | } else { | |
82 | log_error("Invalid first argument %s", argv[1]); | |
1602b008 | 83 | r = -EINVAL; |
490aed58 LP |
84 | goto finish; |
85 | } | |
86 | ||
03e334a1 LP |
87 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); |
88 | if (fd < 0) { | |
1602b008 | 89 | r = log_error_errno(errno, "socket() failed: %m"); |
490aed58 LP |
90 | goto finish; |
91 | } | |
92 | ||
1602b008 | 93 | r = send_on_socket(fd, argv[2], packet, length); |
490aed58 LP |
94 | |
95 | finish: | |
1602b008 | 96 | memory_erase(packet, sizeof(packet)); |
490aed58 | 97 | |
1602b008 | 98 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
490aed58 | 99 | } |