duplicheck: Include required headers for FreeBSD
[strongswan.git] / src / libcharon / plugins / duplicheck / duplicheck.c
1 /*
2 * Copyright (C) 2011 Martin Willi
3 * Copyright (C) 2011 revosec AG
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * for more details.
14 */
15
16 #include <sys/socket.h>
17 #include <sys/un.h>
18 #include <unistd.h>
19 #include <stdlib.h>
20 #include <stddef.h>
21 #include <stdio.h>
22 #include <string.h>
23 #include <errno.h>
24 #include <arpa/inet.h>
25 #include <netinet/in.h>
26
27 #include "duplicheck_msg.h"
28
29 /**
30 * Connect to the daemon, return FD
31 */
32 static int make_connection()
33 {
34 union {
35 struct sockaddr_un un;
36 struct sockaddr_in in;
37 struct sockaddr sa;
38 } addr;
39 int fd, len;
40
41 if (getenv("TCP_PORT"))
42 {
43 addr.in.sin_family = AF_INET;
44 addr.in.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
45 addr.in.sin_port = htons(atoi(getenv("TCP_PORT")));
46 len = sizeof(addr.in);
47 }
48 else
49 {
50 addr.un.sun_family = AF_UNIX;
51 strcpy(addr.un.sun_path, DUPLICHECK_SOCKET);
52
53 len = offsetof(struct sockaddr_un, sun_path) + strlen(addr.un.sun_path);
54 }
55 fd = socket(addr.sa.sa_family, SOCK_STREAM, 0);
56 if (fd < 0)
57 {
58 fprintf(stderr, "opening socket failed: %s\n", strerror(errno));
59 return -1;
60 }
61 if (connect(fd, &addr.sa, len) < 0)
62 {
63 fprintf(stderr, "connecting failed: %s\n", strerror(errno));
64 close(fd);
65 return -1;
66 }
67 return fd;
68 }
69
70 int main(int argc, char *argv[])
71 {
72 char buf[128];
73 int fd, len;
74 u_int16_t msglen;
75
76 fd = make_connection();
77 if (fd < 0)
78 {
79 return 1;
80 }
81 while (1)
82 {
83 len = recv(fd, &msglen, sizeof(msglen), 0);
84 if (len != sizeof(msglen))
85 {
86 break;
87 }
88 msglen = ntohs(msglen);
89 while (msglen)
90 {
91 if (sizeof(buf) > msglen)
92 {
93 len = msglen;
94 }
95 else
96 {
97 len = sizeof(buf);
98 }
99 len = recv(fd, &buf, len, 0);
100 if (len < 0)
101 {
102 break;
103 }
104 msglen -= len;
105 printf("%.*s", len, buf);
106 }
107 printf("\n");
108 if (len < 0)
109 {
110 break;
111 }
112 }
113 fprintf(stderr, "reading from socket failed: %s\n", strerror(errno));
114 close(fd);
115 return 1;
116 }