mirror of
https://github.com/vanhoefm/fragattacks.git
synced 2024-11-25 08:48:31 -05:00
276 lines
5.8 KiB
C
276 lines
5.8 KiB
C
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/*
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* Testing tool for TLSv1 server routines using HTTPS
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* Copyright (c) 2011-2019, Jouni Malinen <j@w1.fi>
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#include "includes.h"
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#include "common.h"
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#include "crypto/tls.h"
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static void https_tls_event_cb(void *ctx, enum tls_event ev,
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union tls_event_data *data)
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{
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wpa_printf(MSG_DEBUG, "HTTPS: TLS event %d", ev);
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}
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static struct wpabuf * https_recv(int s, int timeout_ms)
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{
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struct wpabuf *in;
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int len, ret;
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fd_set rfds;
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struct timeval tv;
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in = wpabuf_alloc(20000);
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if (in == NULL)
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return NULL;
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FD_ZERO(&rfds);
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FD_SET(s, &rfds);
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tv.tv_sec = timeout_ms / 1000;
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tv.tv_usec = timeout_ms % 1000;
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wpa_printf(MSG_DEBUG, "Waiting for more data");
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ret = select(s + 1, &rfds, NULL, NULL, &tv);
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if (ret < 0) {
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wpa_printf(MSG_ERROR, "select: %s", strerror(errno));
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wpabuf_free(in);
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return NULL;
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}
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if (ret == 0) {
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/* timeout */
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wpa_printf(MSG_INFO, "Timeout on waiting for data");
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wpabuf_free(in);
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return NULL;
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}
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len = recv(s, wpabuf_put(in, 0), wpabuf_tailroom(in), 0);
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if (len < 0) {
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wpa_printf(MSG_ERROR, "recv: %s", strerror(errno));
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wpabuf_free(in);
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return NULL;
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}
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if (len == 0) {
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wpa_printf(MSG_DEBUG, "No more data available");
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wpabuf_free(in);
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return NULL;
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}
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wpa_printf(MSG_DEBUG, "Received %d bytes", len);
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wpabuf_put(in, len);
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return in;
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}
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static void https_tls_log_cb(void *ctx, const char *msg)
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{
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wpa_printf(MSG_DEBUG, "TLS: %s", msg);
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}
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static int https_server(int s)
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{
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struct tls_config conf;
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void *tls;
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struct tls_connection_params params;
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struct tls_connection *conn;
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struct wpabuf *in, *out, *appl;
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int res = -1;
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os_memset(&conf, 0, sizeof(conf));
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conf.event_cb = https_tls_event_cb;
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tls = tls_init(&conf);
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if (!tls)
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return -1;
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os_memset(¶ms, 0, sizeof(params));
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params.ca_cert = "hwsim/auth_serv/ca.pem";
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params.client_cert = "hwsim/auth_serv/server.pem";
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params.private_key = "hwsim/auth_serv/server.key";
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params.dh_file = "hwsim/auth_serv/dh.conf";
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if (tls_global_set_params(tls, ¶ms)) {
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wpa_printf(MSG_ERROR, "Failed to set TLS parameters");
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tls_deinit(tls);
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return -1;
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}
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conn = tls_connection_init(tls);
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if (!conn) {
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tls_deinit(tls);
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return -1;
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}
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tls_connection_set_log_cb(conn, https_tls_log_cb, NULL);
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for (;;) {
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in = https_recv(s, 5000);
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if (!in)
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goto done;
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appl = NULL;
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out = tls_connection_server_handshake(tls, conn, in, &appl);
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wpabuf_free(in);
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in = NULL;
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if (!out) {
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if (!tls_connection_get_failed(tls, conn) &&
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!tls_connection_established(tls, conn))
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continue;
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goto done;
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}
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wpa_printf(MSG_DEBUG, "Sending %d bytes",
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(int) wpabuf_len(out));
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if (send(s, wpabuf_head(out), wpabuf_len(out), 0) < 0) {
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wpa_printf(MSG_ERROR, "send: %s", strerror(errno));
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goto done;
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}
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wpabuf_free(out);
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out = NULL;
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if (tls_connection_get_failed(tls, conn)) {
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wpa_printf(MSG_ERROR, "TLS handshake failed");
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goto done;
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}
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if (tls_connection_established(tls, conn))
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break;
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}
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wpabuf_free(out);
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out = NULL;
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wpa_printf(MSG_INFO, "TLS connection established");
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if (appl)
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wpa_hexdump_buf(MSG_DEBUG, "Received application data", appl);
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wpa_printf(MSG_INFO, "Reading HTTP request");
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for (;;) {
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int need_more_data;
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in = https_recv(s, 5000);
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if (!in)
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goto done;
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out = tls_connection_decrypt2(tls, conn, in, &need_more_data);
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wpabuf_free(in);
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in = NULL;
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if (need_more_data) {
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wpa_printf(MSG_DEBUG, "HTTP: Need more data");
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continue;
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}
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if (!out)
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goto done;
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wpa_hexdump_ascii(MSG_INFO, "Request",
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wpabuf_head(out), wpabuf_len(out));
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wpabuf_free(out);
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out = NULL;
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break;
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}
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in = wpabuf_alloc(1000);
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if (!in)
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goto done;
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wpabuf_put_str(in, "HTTP/1.1 200 OK\r\n"
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"Server: test-https_server\r\n"
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"\r\n"
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"<HTML><BODY>HELLO</BODY></HTML>\n");
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wpa_hexdump_ascii(MSG_DEBUG, "Response",
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wpabuf_head(in), wpabuf_len(in));
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out = tls_connection_encrypt(tls, conn, in);
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wpabuf_free(in);
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in = NULL;
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wpa_hexdump_buf(MSG_DEBUG, "Encrypted response", out);
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if (!out)
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goto done;
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wpa_printf(MSG_INFO, "Sending HTTP response: %d bytes",
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(int) wpabuf_len(out));
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if (send(s, wpabuf_head(out), wpabuf_len(out), 0) < 0) {
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wpa_printf(MSG_ERROR, "send: %s", strerror(errno));
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goto done;
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}
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wpabuf_free(out);
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out = NULL;
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res = 0;
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done:
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wpabuf_free(out);
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wpabuf_free(in);
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wpabuf_free(appl);
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tls_connection_deinit(tls, conn);
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tls_deinit(tls);
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close(s);
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return res;
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}
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int main(int argc, char *argv[])
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{
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struct sockaddr_in sin;
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int port, s, conn;
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int on = 1;
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wpa_debug_level = 0;
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wpa_debug_show_keys = 1;
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if (argc < 2) {
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wpa_printf(MSG_INFO, "usage: test-https_server port");
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return -1;
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}
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port = atoi(argv[1]);
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s = socket(AF_INET, SOCK_STREAM, 0);
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if (s < 0) {
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perror("socket");
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return -1;
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}
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if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) < 0) {
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wpa_printf(MSG_DEBUG,
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"HTTP: setsockopt(SO_REUSEADDR) failed: %s",
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strerror(errno));
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/* try to continue anyway */
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}
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os_memset(&sin, 0, sizeof(sin));
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sin.sin_family = AF_INET;
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sin.sin_port = htons(port);
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if (bind(s, (struct sockaddr *) &sin, sizeof(sin)) < 0) {
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perror("bind");
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close(s);
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return -1;
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}
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if (listen(s, 10) < 0) {
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perror("listen");
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close(s);
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return -1;
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}
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for (;;) {
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struct sockaddr_in addr;
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socklen_t addr_len = sizeof(addr);
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conn = accept(s, (struct sockaddr *) &addr, &addr_len);
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if (conn < 0) {
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perror("accept");
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break;
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}
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wpa_printf(MSG_DEBUG, "-------------------------------------");
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wpa_printf(MSG_DEBUG, "Connection from %s:%d",
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inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
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https_server(conn);
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wpa_printf(MSG_DEBUG, "Done with the connection");
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wpa_printf(MSG_DEBUG, "-------------------------------------");
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}
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close(s);
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return 0;
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}
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