static int echo_start(struct uinet_demo_config *cfg, uinet_instance_t uinst, struct ev_loop *loop) { struct uinet_demo_echo *echo = (struct uinet_demo_echo *)cfg; struct uinet_socket *listen_socket = NULL; struct ev_uinet_ctx *soctx = NULL; struct uinet_in_addr addr; int optlen, optval; int error; struct uinet_sockaddr_in sin; if (uinet_inet_pton(UINET_AF_INET, echo->listen_addr, &addr) <= 0) { printf("%s: Malformed address %s\n", echo->cfg.name, echo->listen_addr); error = UINET_EINVAL; goto fail; } error = uinet_socreate(echo->cfg.uinst, UINET_PF_INET, &listen_socket, UINET_SOCK_STREAM, 0); if (0 != error) { printf("%s: Listen socket creation failed (%d)\n", echo->cfg.name, error); goto fail; } soctx = ev_uinet_attach(listen_socket); if (NULL == soctx) { printf("%s: Failed to alloc libev socket context\n", echo->cfg.name); error = UINET_ENOMEM; goto fail; } if (echo->promisc) { if ((error = uinet_make_socket_promiscuous(listen_socket, NULL))) { printf("%s: Failed to make listen socket promiscuous (%d)\n", echo->cfg.name, error); goto fail; } } if (cfg->copy_mode) { if ((error = uinet_sosetcopymode(listen_socket, cfg->copy_mode, cfg->copy_limit, cfg->copy_uif))) { printf("%s: Failed to set copy mode (%d)\n", echo->cfg.name, error); goto fail; } } /* * Socket needs to be non-blocking to work with the event system */ uinet_sosetnonblocking(listen_socket, 1); /* Set NODELAY on the listen socket so it will be set on all * accepted sockets via inheritance. */ optlen = sizeof(optval); optval = 1; if ((error = uinet_sosetsockopt(listen_socket, UINET_IPPROTO_TCP, UINET_TCP_NODELAY, &optval, optlen))) { printf("%s: Failed to set TCP_NODELAY (%d)\n", echo->cfg.name, error); goto fail; } /* Listen on all VLANs */ if ((error = uinet_setl2info2(listen_socket, NULL, NULL, UINET_INL2I_TAG_ANY, NULL))) { printf("%s: Listen socket L2 info set failed (%d)\n", echo->cfg.name, error); goto fail; } echo->listen_socket = listen_socket; memset(&sin, 0, sizeof(struct uinet_sockaddr_in)); sin.sin_len = sizeof(struct uinet_sockaddr_in); sin.sin_family = UINET_AF_INET; sin.sin_addr = addr; sin.sin_port = htons(echo->listen_port); error = uinet_sobind(listen_socket, (struct uinet_sockaddr *)&sin); if (0 != error) { printf("%s: Bind to %s:%u failed\n", echo->cfg.name, echo->listen_addr, echo->listen_port); goto fail; } error = uinet_solisten(echo->listen_socket, -1); if (0 != error) { printf("%s: Listen on %s:%u failed\n", echo->cfg.name, echo->listen_addr, echo->listen_port); goto fail; } if (echo->cfg.verbose) printf("%s: Listening on %s:%u\n", echo->cfg.name, echo->listen_addr, echo->listen_port); /* * Set up a read watcher to accept new connections */ ev_init(&echo->listen_watcher, echo_accept_cb); ev_uinet_set(&echo->listen_watcher, soctx, EV_READ); echo->listen_watcher.data = echo; ev_uinet_start(echo->cfg.loop, &echo->listen_watcher); return (0); fail: if (soctx) ev_uinet_detach(soctx); if (listen_socket) uinet_soclose(listen_socket); return (error); }
static struct passive_context * create_passive(struct ev_loop *loop, struct server_config *cfg) { struct passive_context *passive = NULL; struct uinet_socket *listener = NULL; struct ev_uinet_ctx *soctx = NULL; struct uinet_in_addr addr; int optlen, optval; int error; struct uinet_sockaddr_in sin; if (uinet_inet_pton(UINET_AF_INET, cfg->listen_addr, &addr) <= 0) { printf("Malformed address %s\n", cfg->listen_addr); goto fail; } error = uinet_socreate(UINET_PF_INET, &listener, UINET_SOCK_STREAM, 0); if (0 != error) { printf("Listen socket creation failed (%d)\n", error); goto fail; } soctx = ev_uinet_attach(listener); if (NULL == soctx) { printf("Failed to alloc libev socket context\n"); goto fail; } if ((error = uinet_make_socket_passive(listener))) { printf("Failed to make listen socket passive (%d)\n", error); goto fail; } if (cfg->interface->promisc) { if ((error = uinet_make_socket_promiscuous(listener, cfg->interface->cdom))) { printf("Failed to make listen socket promiscuous (%d)\n", error); goto fail; } } /* * The following settings will be inherited by all sockets created * by this listen socket. */ /* * Need to be non-blocking to work with the event system. */ uinet_sosetnonblocking(listener, 1); /* Wait 5 seconds for connections to complete */ optlen = sizeof(optval); optval = 5; if ((error = uinet_sosetsockopt(listener, UINET_IPPROTO_TCP, UINET_TCP_KEEPINIT, &optval, optlen))) goto fail; /* Begin counting down to close after 10 seconds of idle */ optlen = sizeof(optval); optval = 10; if ((error = uinet_sosetsockopt(listener, UINET_IPPROTO_TCP, UINET_TCP_KEEPIDLE, &optval, optlen))) goto fail; /* Count down to close once per second */ optlen = sizeof(optval); optval = 1; if ((error = uinet_sosetsockopt(listener, UINET_IPPROTO_TCP, UINET_TCP_KEEPINTVL, &optval, optlen))) goto fail; /* Close after idle for 3 counts */ optlen = sizeof(optval); optval = 3; if ((error = uinet_sosetsockopt(listener, UINET_IPPROTO_TCP, UINET_TCP_KEEPCNT, &optval, optlen))) goto fail; /* Wait 100 milliseconds for missing TCP segments */ optlen = sizeof(optval); optval = 100; if ((error = uinet_sosetsockopt(listener, UINET_IPPROTO_TCP, UINET_TCP_REASSDL, &optval, optlen))) goto fail; passive = calloc(1, sizeof(struct passive_context)); if (NULL == passive) { goto fail; } passive->loop = loop; passive->listener = listener; passive->verbose = cfg->verbose; passive->interface = cfg->interface; passive->extract = cfg->extract; memcpy(passive->content_types, cfg->content_types, sizeof(passive->content_types)); memset(&sin, 0, sizeof(struct uinet_sockaddr_in)); sin.sin_len = sizeof(struct uinet_sockaddr_in); sin.sin_family = UINET_AF_INET; sin.sin_addr = addr; sin.sin_port = htons(cfg->listen_port); error = uinet_sobind(listener, (struct uinet_sockaddr *)&sin); if (0 != error) { printf("bind failed\n"); goto fail; } error = uinet_solisten(passive->listener, -1); if (0 != error) goto fail; if (passive->verbose) { char buf[32]; printf("Listening on %s:%u\n", uinet_inet_ntoa(addr, buf, sizeof(buf)), cfg->listen_port); } ev_init(&passive->listen_watcher, accept_cb); ev_uinet_set(&passive->listen_watcher, soctx, EV_READ); passive->listen_watcher.data = passive; ev_uinet_start(loop, &passive->listen_watcher); return (passive); fail: if (soctx) ev_uinet_detach(soctx); if (listener) uinet_soclose(listener); if (passive) free(passive); return (NULL); }
static struct echo_context * create_echo(struct ev_loop *loop, struct server_config *cfg) { struct echo_context *echo = NULL; struct uinet_socket *listener = NULL; struct ev_uinet_ctx *soctx = NULL; struct uinet_in_addr addr; int optlen, optval; int error; struct uinet_sockaddr_in sin; if (uinet_inet_pton(UINET_AF_INET, cfg->listen_addr, &addr) <= 0) { printf("Malformed address %s\n", cfg->listen_addr); goto fail; } error = uinet_socreate(UINET_PF_INET, &listener, UINET_SOCK_STREAM, 0); if (0 != error) { printf("Listen socket creation failed (%d)\n", error); goto fail; } soctx = ev_uinet_attach(listener); if (NULL == soctx) { printf("Failed to alloc libev socket context\n"); goto fail; } if (cfg->interface->promisc) { if ((error = uinet_make_socket_promiscuous(listener, cfg->interface->cdom))) { printf("Failed to make listen socket promiscuous (%d)\n", error); goto fail; } } uinet_sosetnonblocking(listener, 1); /* Set NODELAY on the listen socket so it will be set on all * accepted sockets via inheritance. */ optlen = sizeof(optval); optval = 1; if ((error = uinet_sosetsockopt(listener, UINET_IPPROTO_TCP, UINET_TCP_NODELAY, &optval, optlen))) goto fail; echo = malloc(sizeof(struct echo_context)); if (NULL == echo) { goto fail; } /* Listen on all VLANs */ if ((error = uinet_setl2info2(listener, NULL, NULL, UINET_INL2I_TAG_ANY, NULL))) { printf("Listen socket L2 info set failed (%d)\n", error); goto fail; } echo->loop = loop; echo->listener = listener; echo->verbose = cfg->verbose; echo->listen_cdom = cfg->interface->cdom; memset(&sin, 0, sizeof(struct uinet_sockaddr_in)); sin.sin_len = sizeof(struct uinet_sockaddr_in); sin.sin_family = UINET_AF_INET; sin.sin_addr = addr; sin.sin_port = htons(cfg->listen_port); error = uinet_sobind(listener, (struct uinet_sockaddr *)&sin); if (0 != error) { printf("bind failed\n"); goto fail; } error = uinet_solisten(echo->listener, -1); if (0 != error) goto fail; if (echo->verbose) { char buf[32]; printf("Listening on %s:%u\n", uinet_inet_ntoa(addr, buf, sizeof(buf)), cfg->listen_port); } ev_init(&echo->listen_watcher, accept_cb); ev_uinet_set(&echo->listen_watcher, soctx, EV_READ); echo->listen_watcher.data = echo; ev_uinet_start(loop, &echo->listen_watcher); return (echo); fail: if (soctx) ev_uinet_detach(soctx); if (listener) uinet_soclose(listener); if (echo) free(echo); return (NULL); }
static int passive_start(struct uinet_demo_config *cfg, uinet_instance_t uinst, struct ev_loop *loop) { struct uinet_demo_passive *passive = (struct uinet_demo_passive *)cfg; struct uinet_socket *listen_socket = NULL; struct ev_uinet_ctx *soctx = NULL; struct uinet_in_addr addr; int optlen, optval; int error; struct uinet_sockaddr_in sin; if (uinet_inet_pton(UINET_AF_INET, passive->listen_addr, &addr) <= 0) { printf("%s: Malformed address %s\n", passive->cfg.name, passive->listen_addr); error = UINET_EINVAL; goto fail; } error = uinet_socreate(passive->cfg.uinst, UINET_PF_INET, &listen_socket, UINET_SOCK_STREAM, 0); if (0 != error) { printf("%s: Listen socket creation failed (%d)\n", passive->cfg.name, error); goto fail; } soctx = ev_uinet_attach(listen_socket); if (NULL == soctx) { printf("%s: Failed to alloc libev socket context\n", passive->cfg.name); error = UINET_ENOMEM; goto fail; } if ((error = uinet_make_socket_passive(listen_socket))) { printf("%s: Failed to make listen socket passive (%d)\n", passive->cfg.name, error); goto fail; } if (passive->promisc) { if ((error = uinet_make_socket_promiscuous(listen_socket, NULL))) { printf("%s: Failed to make listen socket promiscuous (%d)\n", passive->cfg.name, error); goto fail; } } /* * The following settings will be inherited by all sockets created * by this listen socket. */ /* * Need to be non-blocking to work with the event system. */ uinet_sosetnonblocking(listen_socket, 1); /* Wait 5 seconds for connections to complete */ optlen = sizeof(optval); optval = 5; if ((error = uinet_sosetsockopt(listen_socket, UINET_IPPROTO_TCP, UINET_TCP_KEEPINIT, &optval, optlen))) { printf("%s: Failed to set TCP_KEEPINIT (%d)\n", passive->cfg.name, error); goto fail; } /* Begin counting down to close after 10 seconds of idle */ optlen = sizeof(optval); optval = 10; if ((error = uinet_sosetsockopt(listen_socket, UINET_IPPROTO_TCP, UINET_TCP_KEEPIDLE, &optval, optlen))) { printf("%s: Failed to set TCP_KEEPIDLE (%d)\n", passive->cfg.name, error); goto fail; } /* Count down to close once per second */ optlen = sizeof(optval); optval = 1; if ((error = uinet_sosetsockopt(listen_socket, UINET_IPPROTO_TCP, UINET_TCP_KEEPINTVL, &optval, optlen))) { printf("%s: Failed to set TCP_KEEPINTVL (%d)\n", passive->cfg.name, error); goto fail; } /* Close after idle for 3 counts */ optlen = sizeof(optval); optval = 3; if ((error = uinet_sosetsockopt(listen_socket, UINET_IPPROTO_TCP, UINET_TCP_KEEPCNT, &optval, optlen))) { printf("%s: Failed to set TCP_KEEPCNT (%d)\n", passive->cfg.name, error); goto fail; } /* Wait 100 milliseconds for missing TCP segments */ optlen = sizeof(optval); optval = 100; if ((error = uinet_sosetsockopt(listen_socket, UINET_IPPROTO_TCP, UINET_TCP_REASSDL, &optval, optlen))) { printf("%s: Failed to set TCP_REASSDL (%d)\n", passive->cfg.name, error); goto fail; } passive->listen_socket = listen_socket; memset(&sin, 0, sizeof(struct uinet_sockaddr_in)); sin.sin_len = sizeof(struct uinet_sockaddr_in); sin.sin_family = UINET_AF_INET; sin.sin_addr = addr; sin.sin_port = htons(passive->listen_port); error = uinet_sobind(listen_socket, (struct uinet_sockaddr *)&sin); if (0 != error) { printf("%s: Bind to %s:%u failed\n", passive->cfg.name, passive->listen_addr, passive->listen_port); goto fail; } error = uinet_solisten(passive->listen_socket, -1); if (0 != error) { printf("%s: Listen on %s:%u failed\n", passive->cfg.name, passive->listen_addr, passive->listen_port); goto fail; } if (passive->cfg.verbose) printf("%s: Listening on %s:%u\n", passive->cfg.name, passive->listen_addr, passive->listen_port); ev_init(&passive->listen_watcher, passive_accept_cb); ev_uinet_set(&passive->listen_watcher, soctx, EV_READ); passive->listen_watcher.data = passive; ev_uinet_start(loop, &passive->listen_watcher); return (0); fail: if (soctx) ev_uinet_detach(soctx); if (listen_socket) uinet_soclose(listen_socket); return (error); }
static void nproxy_inbound_connected_cb(struct ev_loop *loop, ev_uinet *w, int revents) { struct nproxy_splice *splice = w->data; struct uinet_demo_nproxy *nproxy = splice->nproxy; struct uinet_sockaddr_in *sin_local, *sin_foreign; struct uinet_socket *outbound_socket = NULL; struct ev_uinet_ctx *soctx = NULL; struct uinet_in_l2info l2i; char buf1[32], buf2[32]; int optlen, optval; int error; uinet_sogetsockaddr(w->so, (struct uinet_sockaddr **)&sin_local); uinet_sogetpeeraddr(w->so, (struct uinet_sockaddr **)&sin_foreign); if (splice->verbose) printf("%s: splice %llu: inbound connection established (local=%s:%u foreign=%s:%u)\n", nproxy->cfg.name, (unsigned long long)splice->id, uinet_inet_ntoa(sin_local->sin_addr, buf1, sizeof(buf1)), ntohs(sin_local->sin_port), uinet_inet_ntoa(sin_foreign->sin_addr, buf2, sizeof(buf2)), ntohs(sin_foreign->sin_port)); if ((nproxy->cfg.copy_mode & UINET_IP_COPY_MODE_MAYBE) && ((uinet_sogetserialno(w->so) % nproxy->cfg.copy_every) == 0)){ if ((error = uinet_sosetcopymode(w->so, UINET_IP_COPY_MODE_RX|UINET_IP_COPY_MODE_ON, nproxy->cfg.copy_limit, nproxy->cfg.copy_uif))) printf("%s: splice %llu: Failed to set copy mode (%d)\n", nproxy->cfg.name, (unsigned long long)splice->id, error); } /* don't need this watcher anymore */ ev_uinet_stop(loop, w); /* Create the outbound connection */ error = uinet_socreate(nproxy->cfg.uinst, UINET_PF_INET, &outbound_socket, UINET_SOCK_STREAM, 0); if (error != 0) { printf("%s: splice %llu: outbound socket creation failed (%d)\n", nproxy->cfg.name, (unsigned long long)splice->id, error); goto fail; } if ((error = uinet_make_socket_promiscuous(outbound_socket, nproxy->outbound_if))) { printf("%s: splice %llu: failed to make outbound socket promiscuous (%d)\n", nproxy->cfg.name, (unsigned long long)splice->id, error); goto fail; } /* * Socket needs to be non-blocking to work with the event system */ uinet_sosetnonblocking(outbound_socket, 1); optlen = sizeof(optval); optval = 1; error = uinet_sosetsockopt(outbound_socket, UINET_IPPROTO_TCP, UINET_TCP_NODELAY, &optval, optlen); if (error != 0) { printf("%s: splice %llu: failed to set TCP_NODELAY on outbound socket (%d)\n", nproxy->cfg.name, (unsigned long long)splice->id, error); goto fail; } /* Bind to the foreign address of the inbound connection */ error = uinet_sobind(outbound_socket, (struct uinet_sockaddr *)sin_foreign); if (error != 0) { printf("%s: splice %llu: outbound socket bind failed (%d)\n", nproxy->cfg.name, (unsigned long long)splice->id, error); goto fail; } /* * Use the same MAC addrs and VLAN tag stack as the inbound * connection, which requires swapping the local and foreign MAC * addrs. */ error = uinet_getl2info(w->so, &l2i); if (error != 0) { printf("%s: splice %llu: unable to get l2info from inbound socket (%d)\n", nproxy->cfg.name, (unsigned long long)splice->id, error); goto fail; } error = uinet_setl2info2(outbound_socket, l2i.inl2i_foreign_addr, l2i.inl2i_local_addr, l2i.inl2i_flags, &l2i.inl2i_tagstack); if (error != 0) { printf("%s: splice %llu: unable to set l2info for outbound socket (%d)\n", nproxy->cfg.name, (unsigned long long)splice->id, error); goto fail; } soctx = ev_uinet_attach(outbound_socket); if (NULL == soctx) { printf("%s: splice %llu: failed to alloc libev context for outbound socket\n", nproxy->cfg.name, (unsigned long long)splice->id); goto fail; } /* The connection target is the local address of the inbound connection */ error = uinet_soconnect(outbound_socket, (struct uinet_sockaddr *)sin_local); if ((error != 0) && (error != UINET_EINPROGRESS)) { printf("%s: splice %llu: outbound socket connect failed (%d)\n", nproxy->cfg.name, (unsigned long long)splice->id, error); goto fail; } uinet_free_sockaddr((struct uinet_sockaddr *)sin_local); uinet_free_sockaddr((struct uinet_sockaddr *)sin_foreign); ev_init(&splice->outbound.connected_watcher, nproxy_outbound_connected_cb); ev_uinet_set(&splice->outbound.connected_watcher, soctx, EV_WRITE); splice->outbound.connected_watcher.data = splice; ev_uinet_start(loop, &splice->outbound.connected_watcher); ev_init(&splice->outbound.writable_watcher, nproxy_writable_cb); ev_uinet_set(&splice->outbound.writable_watcher, soctx, EV_WRITE); splice->outbound.writable_watcher.data = &splice->outbound; /* will be started as necessary by the inbound copy watcher */ ev_init(&splice->outbound.copy_watcher, nproxy_copy_cb); ev_uinet_set(&splice->outbound.copy_watcher, soctx, EV_READ); splice->outbound.copy_watcher.data = &splice->outbound; /* will be started when the outbound connection is established */ return; fail: uinet_free_sockaddr((struct uinet_sockaddr *)sin_local); uinet_free_sockaddr((struct uinet_sockaddr *)sin_foreign); if (soctx) ev_uinet_detach(soctx); if (outbound_socket) uinet_soclose(outbound_socket); free(splice); }