Start of "Simple Peer-To-Peer Security" protocol.

[tinc] / src / sptps_test.c

diff --git a/src/sptps_test.c b/src/sptps_test.c
new file mode 100644 (file)
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+/*
+    sptps_test.c -- Simple Peer-to-Peer Security test program
+    Copyright (C) 2011 Guus Sliepen <guus@tinc-vpn.org>,
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "system.h"
+#include "poll.h"
+
+#include "crypto.h"
+#include "ecdsa.h"
+#include "sptps.h"
+#include "utils.h"
+
+ecdsa_t mykey, hiskey;
+
+static bool send_data(void *handle, const char *data, size_t len) {
+       char hex[len * 2 + 1];
+       bin2hex(data, hex, len);
+       fprintf(stderr, "Sending %zu bytes of data:\n%s\n", len, hex);
+       const int *sock = handle;
+       if(send(*sock, data, len, 0) != len)
+               return false;
+       return true;
+}
+
+static bool receive_record(void *handle, uint8_t type, const char *data, uint16_t len) {
+       fprintf(stderr, "Received type %d record of %hu bytes:\n", type, len);
+       fwrite(data, len, 1, stdout);
+       return true;
+}
+
+int main(int argc, char *argv[]) {
+       bool initiator = false;
+
+       if(argc < 3) {
+               fprintf(stderr, "Usage: %s my_ecdsa_key_file his_ecdsa_key_file [host] port\n", argv[0]);
+               return 1;
+       }
+
+       if(argc > 4)
+               initiator = true;
+
+       struct addrinfo *ai, hint;
+       memset(&hint, 0, sizeof hint);
+
+       hint.ai_family = AF_UNSPEC;
+       hint.ai_socktype = SOCK_STREAM;
+       hint.ai_protocol = IPPROTO_TCP;
+       hint.ai_flags = initiator ? 0 : AI_PASSIVE;
+       
+       if(getaddrinfo(initiator ? argv[3] : NULL, initiator ? argv[4] : argv[3], &hint, &ai) || !ai) {
+               fprintf(stderr, "getaddrinfo() failed: %s\n", strerror(errno));
+               return 1;
+       }
+
+       int sock = socket(ai->ai_family, SOCK_STREAM, IPPROTO_TCP);
+       if(sock < 0) {
+               fprintf(stderr, "Could not create socket: %s\n", strerror(errno));
+               return 1;
+       }
+
+       int one = 1;
+       setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void *)&one, sizeof one);
+
+       if(initiator) {
+               if(connect(sock, ai->ai_addr, ai->ai_addrlen)) {
+                       fprintf(stderr, "Could not connect to peer: %s\n", strerror(errno));
+                       return 1;
+               }
+               fprintf(stderr, "Connected\n");
+       } else {
+               if(bind(sock, ai->ai_addr, ai->ai_addrlen)) {
+                       fprintf(stderr, "Could not bind socket: %s\n", strerror(errno));
+                       return 1;
+               }
+               if(listen(sock, 1)) {
+                       fprintf(stderr, "Could not listen on socket: %s\n", strerror(errno));
+                       return 1;
+               }
+               fprintf(stderr, "Listening...\n");
+
+               sock = accept(sock, NULL, NULL);
+               if(sock < 0) {
+                       fprintf(stderr, "Could not accept connection: %s\n", strerror(errno));
+                       return 1;
+               }
+
+               fprintf(stderr, "Connected\n");
+       }
+
+       crypto_init();
+
+       FILE *fp = fopen(argv[1], "r");
+       if(!ecdsa_read_pem_private_key(&mykey, fp))
+               return 1;
+       fclose(fp);
+
+       fp = fopen(argv[2], "r");
+       if(!ecdsa_read_pem_public_key(&hiskey, fp))
+               return 1;
+       fclose(fp);
+
+       fprintf(stderr, "Keys loaded\n");
+
+       sptps_t s;
+       if(!start_sptps(&s, &sock, initiator, mykey, hiskey, "sptps_test", 10, send_data, receive_record))
+               return 1;
+
+       while(true) {
+               char buf[4095];
+
+               struct pollfd fds[2];
+               fds[0].fd = 0;
+               fds[0].events = POLLIN;
+               fds[1].fd = sock;
+               fds[1].events = POLLIN;
+               if(poll(fds, 2, -1) < 0)
+                       return 1;
+
+               if(fds[0].revents) {
+                       ssize_t len = read(0, buf, sizeof buf);
+                       if(len < 0) {
+                               fprintf(stderr, "Could not read from stdin: %s\n", strerror(errno));
+                               return 1;
+                       }
+                       if(len == 0)
+                               break;
+                       if(!send_record(&s, 0, buf, len))
+                               return 1;
+               }
+
+               if(fds[1].revents) {
+                       ssize_t len = recv(sock, buf, sizeof buf, 0);
+                       if(len < 0) {
+                               fprintf(stderr, "Could not read from socket: %s\n", strerror(errno));
+                               return 1;
+                       }
+                       if(len == 0) {
+                               fprintf(stderr, "Connection terminated by peer.\n");
+                               break;
+                       }
+                       char hex[len * 2 + 1];
+                       bin2hex(buf, hex, len);
+                       fprintf(stderr, "Received %zd bytes of data:\n%s\n", len, hex);
+                       if(!receive_data(&s, buf, len))
+                               return 1;
+               }
+       }
+
+       return 0;
+}