X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fsptps_test.c;h=9452ed1e0242685b36fdce31c3c4326d6a364b4c;hp=7b33eef1837d733f9b157cd861582137bbedb894;hb=0c7e0210d900185d4c1a9ffd969dc2a26d9523a9;hpb=3d75dbc0880484ff6d2f689a9b981def3cd75b5e diff --git a/src/sptps_test.c b/src/sptps_test.c index 7b33eef1..9452ed1e 100644 --- a/src/sptps_test.c +++ b/src/sptps_test.c @@ -1,6 +1,6 @@ /* sptps_test.c -- Simple Peer-to-Peer Security test program - Copyright (C) 2011 Guus Sliepen , + Copyright (C) 2011-2014 Guus Sliepen 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 @@ -18,58 +18,206 @@ */ #include "system.h" -#include "poll.h" + +#ifdef HAVE_LINUX +#include +#endif + +#include #include "crypto.h" #include "ecdsa.h" #include "sptps.h" #include "utils.h" -ecdsa_t mykey, hiskey; +// Symbols necessary to link with logger.o +bool send_request(void *c, const char *msg, ...) { return false; } +struct list_t *connection_list = NULL; +bool send_meta(void *c, const char *msg , int len) { return false; } +char *logfilename = NULL; +bool do_detach = false; +struct timeval now; + +static bool verbose; +static bool readonly; +static bool writeonly; +static int in = 0; +static int out = 1; -static bool send_data(void *handle, const char *data, size_t len) { +static bool send_data(void *handle, uint8_t type, const void *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); + if(verbose) + fprintf(stderr, "Sending %d bytes of data:\n%s\n", (int)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); +static bool receive_record(void *handle, uint8_t type, const void *data, uint16_t len) { + if(verbose) + fprintf(stderr, "Received type %d record of %hu bytes:\n", type, len); + if(!writeonly) + write(out, data, len); return true; } +static struct option const long_options[] = { + {"datagram", no_argument, NULL, 'd'}, + {"quit", no_argument, NULL, 'q'}, + {"readonly", no_argument, NULL, 'r'}, + {"writeonly", no_argument, NULL, 'w'}, + {"packet-loss", required_argument, NULL, 'L'}, + {"replay-window", required_argument, NULL, 'W'}, + {"verbose", required_argument, NULL, 'v'}, + {"help", no_argument, NULL, 1}, + {NULL, 0, NULL, 0} +}; + +const char *program_name; + +static void usage() { + fprintf(stderr, "Usage: %s [options] my_ed25519_key_file his_ed25519_key_file [host] port\n\n", program_name); + fprintf(stderr, "Valid options are:\n" + " -d, --datagram Enable datagram mode.\n" + " -q, --quit Quit when EOF occurs on stdin.\n" + " -r, --readonly Only send data from the socket to stdout.\n" +#ifdef HAVE_LINUX + " -t, --tun Use a tun device instead of stdio.\n" +#endif + " -w, --writeonly Only send data from stdin to the socket.\n" + " -L, --packet-loss RATE Fake packet loss of RATE percent.\n" + " -R, --replay-window N Set replay window to N bytes.\n" + " -v, --verbose Display debug messages.\n" + "\n"); + fprintf(stderr, "Report bugs to tinc@tinc-vpn.org.\n"); +} + int main(int argc, char *argv[]) { + program_name = argv[0]; bool initiator = false; + bool datagram = false; +#ifdef HAVE_LINUX + bool tun = false; +#endif + int packetloss = 0; + int r; + int option_index = 0; + ecdsa_t *mykey = NULL, *hiskey = NULL; + bool quit = false; + + while((r = getopt_long(argc, argv, "dqrtwL:W:v", long_options, &option_index)) != EOF) { + switch (r) { + case 0: /* long option */ + break; + + case 'd': /* datagram mode */ + datagram = true; + break; + + case 'q': /* close connection on EOF from stdin */ + quit = true; + break; + + case 'r': /* read only */ + readonly = true; + break; + + case 't': /* read only */ +#ifdef HAVE_LINUX + tun = true; +#else + fprintf(stderr, "--tun is only supported on Linux.\n"); + usage(); + return 1; +#endif + break; + + case 'w': /* write only */ + writeonly = true; + break; + + case 'L': /* packet loss rate */ + packetloss = atoi(optarg); + break; + + case 'W': /* replay window size */ + sptps_replaywin = atoi(optarg); + break; + + case 'v': /* be verbose */ + verbose = true; + break; + + case '?': /* wrong options */ + usage(); + return 1; + + case 1: /* help */ + usage(); + return 0; - if(argc < 3) { - fprintf(stderr, "Usage: %s my_ecdsa_key_file his_ecdsa_key_file [host] port\n", argv[0]); + default: + break; + } + } + + argc -= optind - 1; + argv += optind - 1; + + if(argc < 4 || argc > 5) { + fprintf(stderr, "Wrong number of arguments.\n"); + usage(); return 1; } if(argc > 4) initiator = true; + srand(time(NULL)); + +#ifdef HAVE_LINUX + if(tun) { + in = out = open("/dev/net/tun", O_RDWR | O_NONBLOCK); + if(in < 0) { + fprintf(stderr, "Could not open tun device: %s\n", strerror(errno)); + return 1; + } + struct ifreq ifr = { + .ifr_flags = IFF_TUN + }; + if(ioctl(in, TUNSETIFF, &ifr)) { + fprintf(stderr, "Could not configure tun interface: %s\n", strerror(errno)); + return 1; + } + ifr.ifr_name[IFNAMSIZ - 1] = 0; + fprintf(stderr, "Using tun interface %s\n", ifr.ifr_name); + } +#endif + +#ifdef HAVE_MINGW + static struct WSAData wsa_state; + if(WSAStartup(MAKEWORD(2, 2), &wsa_state)) + return 1; +#endif + 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_socktype = datagram ? SOCK_DGRAM : SOCK_STREAM; + hint.ai_protocol = datagram ? IPPROTO_UDP : 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)); + fprintf(stderr, "getaddrinfo() failed: %s\n", sockstrerror(sockerrno)); return 1; } - int sock = socket(ai->ai_family, SOCK_STREAM, IPPROTO_TCP); + int sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); if(sock < 0) { - fprintf(stderr, "Could not create socket: %s\n", strerror(errno)); + fprintf(stderr, "Could not create socket: %s\n", sockstrerror(sockerrno)); return 1; } @@ -78,25 +226,44 @@ int main(int argc, char *argv[]) { if(initiator) { if(connect(sock, ai->ai_addr, ai->ai_addrlen)) { - fprintf(stderr, "Could not connect to peer: %s\n", strerror(errno)); + fprintf(stderr, "Could not connect to peer: %s\n", sockstrerror(sockerrno)); 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)); + fprintf(stderr, "Could not bind socket: %s\n", sockstrerror(sockerrno)); 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; + if(!datagram) { + if(listen(sock, 1)) { + fprintf(stderr, "Could not listen on socket: %s\n", sockstrerror(sockerrno)); + return 1; + } + fprintf(stderr, "Listening...\n"); + + sock = accept(sock, NULL, NULL); + if(sock < 0) { + fprintf(stderr, "Could not accept connection: %s\n", sockstrerror(sockerrno)); + return 1; + } + } else { + fprintf(stderr, "Listening...\n"); + + char buf[65536]; + struct sockaddr addr; + socklen_t addrlen = sizeof addr; + + if(recvfrom(sock, buf, sizeof buf, MSG_PEEK, &addr, &addrlen) <= 0) { + fprintf(stderr, "Could not read from socket: %s\n", sockstrerror(sockerrno)); + return 1; + } + + if(connect(sock, &addr, addrlen)) { + fprintf(stderr, "Could not accept connection: %s\n", sockstrerror(sockerrno)); + return 1; + } } fprintf(stderr, "Connected\n"); @@ -105,61 +272,109 @@ int main(int argc, char *argv[]) { crypto_init(); FILE *fp = fopen(argv[1], "r"); - if(!ecdsa_read_pem_private_key(&mykey, fp)) + if(!fp) { + fprintf(stderr, "Could not open %s: %s\n", argv[1], strerror(errno)); + return 1; + } + if(!(mykey = ecdsa_read_pem_private_key(fp))) return 1; fclose(fp); fp = fopen(argv[2], "r"); - if(!ecdsa_read_pem_public_key(&hiskey, fp)) + if(!fp) { + fprintf(stderr, "Could not open %s: %s\n", argv[2], strerror(errno)); + return 1; + } + if(!(hiskey = ecdsa_read_pem_public_key(fp))) return 1; fclose(fp); - fprintf(stderr, "Keys loaded\n"); + if(verbose) + fprintf(stderr, "Keys loaded\n"); sptps_t s; - if(!start_sptps(&s, &sock, initiator, mykey, hiskey, "sptps_test", 10, send_data, receive_record)) + if(!sptps_start(&s, &sock, initiator, datagram, 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) + if(writeonly && readonly) + break; + + char buf[65535] = ""; + + fd_set fds; + FD_ZERO(&fds); +#ifndef HAVE_MINGW + if(!readonly && s.instate) + FD_SET(in, &fds); +#endif + FD_SET(sock, &fds); + if(select(sock + 1, &fds, NULL, NULL, NULL) <= 0) return 1; - if(fds[0].revents) { - ssize_t len = read(0, buf, sizeof buf); + if(FD_ISSET(in, &fds)) { + ssize_t len = read(in, 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)) + if(len == 0) { + if(quit) + break; + readonly = true; + continue; + } + if(buf[0] == '#') + s.outseqno = atoi(buf + 1); + if(buf[0] == '^') + sptps_send_record(&s, SPTPS_HANDSHAKE, NULL, 0); + else if(buf[0] == '$') { + sptps_force_kex(&s); + if(len > 1) + sptps_send_record(&s, 0, buf, len); + } else + if(!sptps_send_record(&s, buf[0] == '!' ? 1 : 0, buf, (len == 1 && buf[0] == '\n') ? 0 : buf[0] == '*' ? sizeof buf : len)) return 1; } - if(fds[1].revents) { + if(FD_ISSET(sock, &fds)) { ssize_t len = recv(sock, buf, sizeof buf, 0); if(len < 0) { - fprintf(stderr, "Could not read from socket: %s\n", strerror(errno)); + fprintf(stderr, "Could not read from socket: %s\n", sockstrerror(sockerrno)); 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; + if(verbose) { + char hex[len * 2 + 1]; + bin2hex(buf, hex, len); + fprintf(stderr, "Received %d bytes of data:\n%s\n", (int)len, hex); + } + if(packetloss && (rand() % 100) < packetloss) { + if(verbose) + fprintf(stderr, "Dropped.\n"); + continue; + } + char *bufp = buf; + while(len) { + size_t done = sptps_receive_data(&s, bufp, len); + if(!done) { + if(!datagram) + return 1; + } else { + break; + } + + bufp += done; + len -= done; + } } } + if(!sptps_stop(&s)) + return 1; + return 0; }