X-Git-Url: https://www.tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Fsptps_test.c;h=0452b25cc918ae223836e1803896bf2eaeb1b7ac;hb=1af8ca58b86f5956d6acd9f63083a84666647ef0;hp=1815fb72b6de81e11729110b9fcd559aa59b0fee;hpb=a5bcb29fdffe9bb2a9dd59c2e315f13fda6d5b34;p=tinc diff --git a/src/sptps_test.c b/src/sptps_test.c index 1815fb72..0452b25c 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) 2011-2013 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 @@ -19,6 +19,10 @@ #include "system.h" +#ifdef HAVE_LINUX +#include +#endif + #include #include "crypto.h" @@ -27,32 +31,62 @@ #include "utils.h" // Symbols necessary to link with logger.o -bool send_request(void *c, const char *msg, ...) { return false; } +bool send_request(void *c, const char *msg, ...) { + (void)c; + (void)msg; + return false; +} + struct list_t *connection_list = NULL; -bool send_meta(void *c, const char *msg , int len) { return false; } + +bool send_meta(void *c, const char *msg, int len) { + (void)c; + (void)msg; + (void)len; + return false; +} + char *logfilename = NULL; +bool do_detach = false; struct timeval now; +static bool special; static bool verbose; static bool readonly; static bool writeonly; +static int in = 0; +static int out = 1; +static int addressfamily = AF_UNSPEC; -static bool send_data(void *handle, uint8_t type, const char *data, size_t len) { +static bool send_data(void *handle, uint8_t type, const void *data, size_t len) { + (void)type; char hex[len * 2 + 1]; bin2hex(data, hex, len); - if(verbose) + + 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) + + if((size_t)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) { - if(verbose) - fprintf(stderr, "Received type %d record of %hu bytes:\n", type, len); - if(!writeonly) - fwrite(data, len, 1, stdout); +static bool receive_record(void *handle, uint8_t type, const void *data, uint16_t len) { + (void)handle; + + if(verbose) { + fprintf(stderr, "Received type %d record of %u bytes:\n", type, len); + } + + if(!writeonly) { + write(out, data, len); + } + return true; } @@ -63,6 +97,7 @@ static struct option const long_options[] = { {"writeonly", no_argument, NULL, 'w'}, {"packet-loss", required_argument, NULL, 'L'}, {"replay-window", required_argument, NULL, 'W'}, + {"special", no_argument, NULL, 's'}, {"verbose", required_argument, NULL, 'v'}, {"help", no_argument, NULL, 1}, {NULL, 0, NULL, 0} @@ -71,16 +106,22 @@ static struct option const long_options[] = { const char *program_name; static void usage() { - fprintf(stderr, "Usage: %s [options] my_ecdsa_key_file his_ecdsa_key_file [host] port\n\n", program_name); + 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" - " -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"); + " -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" + " -s, --special Enable special handling of lines starting with #, ^ and $.\n" + " -v, --verbose Display debug messages.\n" + " -4 Use IPv4.\n" + " -6 Use IPv6.\n" + "\n"); fprintf(stderr, "Report bugs to tinc@tinc-vpn.org.\n"); } @@ -88,55 +129,80 @@ 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, "dqrwL:W:v", long_options, &option_index)) != EOF) { - switch (r) { - case 0: /* long option */ - break; + while((r = getopt_long(argc, argv, "dqrstwL:W:v46", long_options, &option_index)) != EOF) { + switch(r) { + case 0: /* long option */ + break; - case 'd': /* datagram mode */ - datagram = true; - break; + case 'd': /* datagram mode */ + datagram = true; + break; - case 'q': /* close connection on EOF from stdin */ - quit = true; - break; + case 'q': /* close connection on EOF from stdin */ + quit = true; + break; - case 'r': /* read only */ - readonly = true; - break; + case 'r': /* read only */ + readonly = true; + break; - case 'w': /* write only */ - writeonly = 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 'L': /* packet loss rate */ - packetloss = atoi(optarg); - break; + case 'w': /* write only */ + writeonly = true; + break; - case 'W': /* replay window size */ - sptps_replaywin = atoi(optarg); - break; + case 'L': /* packet loss rate */ + packetloss = atoi(optarg); + break; - case 'v': /* be verbose */ - verbose = true; - break; + case 'W': /* replay window size */ + sptps_replaywin = atoi(optarg); + break; - case '?': /* wrong options */ - usage(); - return 1; + case 'v': /* be verbose */ + verbose = true; + break; - case 1: /* help */ - usage(); - return 0; + case 's': /* special character handling */ + special = true; + break; - default: - break; + case '?': /* wrong options */ + usage(); + return 1; + + case '4': /* IPv4 */ + addressfamily = AF_INET; + break; + + case '6': /* IPv6 */ + addressfamily = AF_INET6; + break; + + case 1: /* help */ + usage(); + return 0; + + default: + break; } } @@ -149,61 +215,94 @@ int main(int argc, char *argv[]) { return 1; } - if(argc > 4) + 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)) + + if(WSAStartup(MAKEWORD(2, 2), &wsa_state)) { return 1; + } + #endif struct addrinfo *ai, hint; - memset(&hint, 0, sizeof hint); + memset(&hint, 0, sizeof(hint)); - hint.ai_family = AF_UNSPEC; + hint.ai_family = addressfamily; 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, 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; } int one = 1; - setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void *)&one, sizeof one); + 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)); + 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)); + fprintf(stderr, "Could not bind socket: %s\n", sockstrerror(sockerrno)); return 1; } if(!datagram) { if(listen(sock, 1)) { - fprintf(stderr, "Could not listen on socket: %s\n", strerror(errno)); + 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", strerror(errno)); + fprintf(stderr, "Could not accept connection: %s\n", sockstrerror(sockerrno)); return 1; } } else { @@ -211,15 +310,15 @@ int main(int argc, char *argv[]) { char buf[65536]; struct sockaddr addr; - socklen_t addrlen = sizeof 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", strerror(errno)); + 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", strerror(errno)); + fprintf(stderr, "Could not accept connection: %s\n", sockstrerror(sockerrno)); return 1; } } @@ -230,90 +329,144 @@ int main(int argc, char *argv[]) { crypto_init(); FILE *fp = fopen(argv[1], "r"); - if(!(mykey = ecdsa_read_pem_private_key(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(!(hiskey = ecdsa_read_pem_public_key(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); - if(verbose) + if(verbose) { fprintf(stderr, "Keys loaded\n"); + } sptps_t s; - if(!sptps_start(&s, &sock, initiator, datagram, 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) { - if(writeonly && readonly) + if(writeonly && readonly) { break; + } char buf[65535] = ""; fd_set fds; FD_ZERO(&fds); #ifndef HAVE_MINGW - if(!readonly && s.instate) - FD_SET(0, &fds); + + if(!readonly && s.instate) { + FD_SET(in, &fds); + } + #endif FD_SET(sock, &fds); - if(select(sock + 1, &fds, NULL, NULL, NULL) <= 0) + + if(select(sock + 1, &fds, NULL, NULL, NULL) <= 0) { return 1; + } + + if(FD_ISSET(in, &fds)) { + ssize_t len = read(in, buf, sizeof(buf)); - if(FD_ISSET(0, &fds)) { - 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) { - if(quit) + if(quit) { break; + } + readonly = true; continue; } - if(buf[0] == '#') + + if(special && buf[0] == '#') { s.outseqno = atoi(buf + 1); - if(buf[0] == '^') + } + + if(special && buf[0] == '^') { sptps_send_record(&s, SPTPS_HANDSHAKE, NULL, 0); - else if(buf[0] == '$') { + } else if(special && buf[0] == '$') { sptps_force_kex(&s); - if(len > 1) + + if(len > 1) { sptps_send_record(&s, 0, buf, len); - } else - if(!sptps_send_record(&s, buf[0] == '!' ? 1 : 0, buf, buf[0] == '\n' ? 0 : buf[0] == '*' ? sizeof buf : len)) + } + } else if(!sptps_send_record(&s, buf[0] == '!' ? 1 : 0, buf, (len == 1 && buf[0] == '\n') ? 0 : buf[0] == '*' ? sizeof(buf) : (size_t)len)) { return 1; + } } if(FD_ISSET(sock, &fds)) { - ssize_t len = recv(sock, buf, sizeof buf, 0); + 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; } + 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) + if(verbose) { fprintf(stderr, "Dropped.\n"); + } + continue; } - if(!sptps_receive_data(&s, buf, len) && !datagram) - return 1; + + char *bufp = buf; + + while(len) { + size_t done = sptps_receive_data(&s, bufp, len); + + if(!done) { + if(!datagram) { + return 1; + } + } + + bufp += done; + len -= done; + } } } - if(!sptps_stop(&s)) + if(!sptps_stop(&s)) { return 1; + } return 0; }