2 sptps_test.c -- Simple Peer-to-Peer Security test program
3 Copyright (C) 2011-2013 Guus Sliepen <guus@tinc-vpn.org>,
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
29 // Symbols necessary to link with logger.o
30 bool send_request(void *c, const char *msg, ...) { return false; }
31 struct list_t *connection_list = NULL;
32 bool send_meta(void *c, const char *msg , int len) { return false; }
33 char *logfilename = NULL;
36 ecdsa_t *mykey, *hiskey;
38 static bool send_data(void *handle, uint8_t type, const char *data, size_t len) {
39 char hex[len * 2 + 1];
40 bin2hex(data, hex, len);
41 fprintf(stderr, "Sending %d bytes of data:\n%s\n", (int)len, hex);
42 const int *sock = handle;
43 if(send(*sock, data, len, 0) != len)
48 static bool receive_record(void *handle, uint8_t type, const char *data, uint16_t len) {
49 fprintf(stderr, "Received type %d record of %hu bytes:\n", type, len);
50 fwrite(data, len, 1, stdout);
54 static struct option const long_options[] = {
55 {"datagram", no_argument, NULL, 'd'},
56 {"packet-loss", required_argument, NULL, 'l'},
57 {"help", no_argument, NULL, 1},
61 const char *program_name;
64 fprintf(stderr, "Usage: %s [options] my_ecdsa_key_file his_ecdsa_key_file [host] port\n\n", program_name);
65 fprintf(stderr, "Valid options are:\n"
66 " -d, --datagram Enable datagram mode.\n"
67 " -l, --packet-loss RATE Fake packet loss of RATE percent.\n"
69 fprintf(stderr, "Report bugs to tinc@tinc-vpn.org.\n");
72 int main(int argc, char *argv[]) {
73 program_name = argv[0];
74 bool initiator = false;
75 bool datagram = false;
80 while((r = getopt_long(argc, argv, "dl:", long_options, &option_index)) != EOF) {
82 case 0: /* long option */
85 case 'd': /* datagram mode */
89 case 'l': /* packet loss rate */
90 packetloss = atoi(optarg);
93 case '?': /* wrong options */
109 if(argc < 4 || argc > 5) {
110 fprintf(stderr, "Wrong number of arguments.\n");
121 static struct WSAData wsa_state;
122 if(WSAStartup(MAKEWORD(2, 2), &wsa_state))
126 struct addrinfo *ai, hint;
127 memset(&hint, 0, sizeof hint);
129 hint.ai_family = AF_UNSPEC;
130 hint.ai_socktype = datagram ? SOCK_DGRAM : SOCK_STREAM;
131 hint.ai_protocol = datagram ? IPPROTO_UDP : IPPROTO_TCP;
132 hint.ai_flags = initiator ? 0 : AI_PASSIVE;
134 if(getaddrinfo(initiator ? argv[3] : NULL, initiator ? argv[4] : argv[3], &hint, &ai) || !ai) {
135 fprintf(stderr, "getaddrinfo() failed: %s\n", strerror(errno));
139 int sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
141 fprintf(stderr, "Could not create socket: %s\n", strerror(errno));
146 setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void *)&one, sizeof one);
149 if(connect(sock, ai->ai_addr, ai->ai_addrlen)) {
150 fprintf(stderr, "Could not connect to peer: %s\n", strerror(errno));
153 fprintf(stderr, "Connected\n");
155 if(bind(sock, ai->ai_addr, ai->ai_addrlen)) {
156 fprintf(stderr, "Could not bind socket: %s\n", strerror(errno));
161 if(listen(sock, 1)) {
162 fprintf(stderr, "Could not listen on socket: %s\n", strerror(errno));
165 fprintf(stderr, "Listening...\n");
167 sock = accept(sock, NULL, NULL);
169 fprintf(stderr, "Could not accept connection: %s\n", strerror(errno));
173 fprintf(stderr, "Listening...\n");
176 struct sockaddr addr;
177 socklen_t addrlen = sizeof addr;
179 if(recvfrom(sock, buf, sizeof buf, MSG_PEEK, &addr, &addrlen) <= 0) {
180 fprintf(stderr, "Could not read from socket: %s\n", strerror(errno));
184 if(connect(sock, &addr, addrlen)) {
185 fprintf(stderr, "Could not accept connection: %s\n", strerror(errno));
190 fprintf(stderr, "Connected\n");
195 FILE *fp = fopen(argv[1], "r");
196 if(!(mykey = ecdsa_read_pem_private_key(fp)))
200 fp = fopen(argv[2], "r");
201 if(!(hiskey = ecdsa_read_pem_public_key(fp)))
205 fprintf(stderr, "Keys loaded\n");
208 if(!sptps_start(&s, &sock, initiator, datagram, mykey, hiskey, "sptps_test", 10, send_data, receive_record))
212 char buf[65535] = "";
220 if(select(sock + 1, &fds, NULL, NULL, NULL) <= 0)
223 if(FD_ISSET(0, &fds)) {
224 ssize_t len = read(0, buf, sizeof buf);
226 fprintf(stderr, "Could not read from stdin: %s\n", strerror(errno));
232 sptps_send_record(&s, SPTPS_HANDSHAKE, NULL, 0);
233 else if(buf[0] == '$') {
236 sptps_send_record(&s, 0, buf, len);
238 if(!sptps_send_record(&s, buf[0] == '!' ? 1 : 0, buf, buf[0] == '\n' ? 0 : buf[0] == '*' ? sizeof buf : len))
242 if(FD_ISSET(sock, &fds)) {
243 ssize_t len = recv(sock, buf, sizeof buf, 0);
245 fprintf(stderr, "Could not read from socket: %s\n", strerror(errno));
249 fprintf(stderr, "Connection terminated by peer.\n");
252 char hex[len * 2 + 1];
253 bin2hex(buf, hex, len);
254 fprintf(stderr, "Received %d bytes of data:\n%s\n", (int)len, hex);
255 if((rand() % 100) < packetloss) {
256 fprintf(stderr, "Dropped.\n");
259 if(!sptps_receive_data(&s, buf, len))