--- /dev/null
+/*
+ * Simple GnuTLS client used for testing.
+ *
+ * Copyright (C) 2011 Simon Ruderich
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+/* socket(), connect() */
+#include <sys/types.h>
+#include <sys/socket.h>
+/* close() */
+#include <unistd.h>
+/* getaddrinfo() */
+#include <netdb.h>
+/* htons() */
+#include <arpa/inet.h>
+/* errno */
+#include <errno.h>
+
+/* GnuTLS */
+#include <gnutls/gnutls.h>
+#include <gnutls/x509.h>
+
+
+#define MAX_REQUEST_LINE 4096
+
+static int connect_to_host(const char *hostname, const char *port);
+static int read_http_request(FILE *client_fd, char *request, size_t length);
+
+
+int main (int argc, char *argv[]) {
+ int result, response;
+ unsigned int status;
+ char buffer[MAX_REQUEST_LINE];
+ int server;
+ FILE *fd;
+
+ gnutls_session_t session;
+ gnutls_certificate_credentials_t xcred;
+
+ gnutls_x509_crt_t cert;
+ const gnutls_datum_t *cert_list;
+ unsigned int cert_list_size;
+
+ if (5 != argc) {
+ fprintf(stderr,
+ "Usage: %s <ca-file> <hostname> <port> <hostname-verify>\n",
+ argv[0]);
+ return EXIT_FAILURE;
+ }
+
+ gnutls_global_init();
+ gnutls_certificate_allocate_credentials(&xcred);
+
+ gnutls_certificate_set_x509_trust_file(xcred,
+ argv[1], GNUTLS_X509_FMT_PEM);
+
+ gnutls_init(&session, GNUTLS_CLIENT);
+ gnutls_priority_set_direct(session, "NORMAL", NULL);
+ gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, xcred);
+
+ server = connect_to_host("localhost", "4711");
+ if (-1 == server) {
+ return EXIT_FAILURE;
+ }
+ fd = fdopen(server, "a+");
+ if (NULL == fd) {
+ perror("fdopen()");
+ return EXIT_FAILURE;
+ }
+
+ /* Talk to tlsproxy. */
+ fprintf(fd, "CONNECT %s:%s HTTP/1.0\r\n", argv[2], argv[3]);
+ fprintf(fd, "\r\n");
+ fflush(fd);
+ if (-1 == read_http_request(fd, buffer, sizeof(buffer))) {
+ fprintf(stderr, "invalid proxy response\n");
+ return EXIT_FAILURE;
+ }
+
+ printf("response: %s\n", buffer);
+
+ if (1 != sscanf(buffer, "HTTP/1.0 %d", &response)) {
+ fprintf(stderr, "invalid proxy response: %s\n", buffer);
+ return EXIT_FAILURE;
+ }
+
+ if (200 != response) {
+ fprintf(stderr, "proxy failure\n");
+ return EXIT_FAILURE;
+ }
+
+ gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t)server);
+
+ result = gnutls_handshake(session);
+ if (GNUTLS_E_SUCCESS != result) {
+ fprintf(stderr, "gnutls_handshake() failed\n");
+ gnutls_perror(result);
+ return EXIT_FAILURE;
+ }
+
+ /* Verify the proxy certificate. */
+ result = gnutls_certificate_verify_peers2(session, &status);
+ if (0 > result) {
+ fprintf(stderr, "gnutls_certificate_verify_peers2() failed\n");
+ gnutls_perror(result);
+ return EXIT_FAILURE;
+ }
+
+ if (status & GNUTLS_CERT_INVALID) {
+ fprintf(stderr, "certificate invalid\n");
+ }
+
+ /* Get proxy certificate. */
+ if (0 > (result = gnutls_x509_crt_init(&cert))) {
+ fprintf(stderr, "gnutls_x509_crt_init() failed");
+ gnutls_perror(result);
+ return EXIT_FAILURE;
+ }
+
+ cert_list = gnutls_certificate_get_peers(session, &cert_list_size);
+ if (NULL == cert_list) {
+ fprintf(stderr, "gnutls_certificate_get_peers() failed");
+ return EXIT_FAILURE;
+ }
+
+ if (0 > (result = gnutls_x509_crt_import(cert, &cert_list[0],
+ GNUTLS_X509_FMT_DER))) {
+ fprintf(stderr, "gnutls_x509_crt_import() failed");
+ gnutls_perror(result);
+ return EXIT_FAILURE;
+ }
+
+ /* Check hostname. */
+ if (!gnutls_x509_crt_check_hostname(cert, argv[4])) {
+ fprintf(stderr, "hostname didn't match '%s'\n", argv[4]);
+ }
+
+ gnutls_x509_crt_deinit(cert);
+
+ gnutls_bye(session, GNUTLS_SHUT_RDWR);
+ fclose(fd);
+
+ gnutls_deinit(session);
+ gnutls_certificate_free_credentials(xcred);
+ gnutls_global_deinit();
+
+ return EXIT_SUCCESS;
+}
+
+
+/* Copied from src/connection.c (and removed LOG_* stuff)! Don't modify. */
+
+static int connect_to_host(const char *hostname, const char *port) {
+ struct addrinfo gai_hints;
+ struct addrinfo *gai_result;
+ int gai_return;
+
+ int server_socket;
+ struct addrinfo *server;
+
+ if (NULL == hostname || NULL == port) {
+ return -1;
+ }
+
+ /* Get IP of hostname server. */
+ memset(&gai_hints, 0, sizeof(gai_hints));
+ gai_hints.ai_family = AF_UNSPEC;
+ gai_hints.ai_socktype = SOCK_STREAM;
+ gai_hints.ai_protocol = 0;
+ gai_hints.ai_flags = AI_NUMERICSERV /* given port is numeric */
+ | AI_ADDRCONFIG /* supported by this computer */
+ | AI_V4MAPPED; /* support IPv4 through IPv6 */
+ gai_return = getaddrinfo(hostname, port, &gai_hints, &gai_result);
+ if (0 != gai_return) {
+ perror("connect_to_host(): getaddrinfo()");
+ return -1;
+ }
+
+ /* Now try to connect to each server returned by getaddrinfo(), use the
+ * first successful connect. */
+ for (server = gai_result; NULL != server; server = server->ai_next) {
+ server_socket = socket(server->ai_family,
+ server->ai_socktype,
+ server->ai_protocol);
+ if (-1 == server_socket) {
+ perror("connect_to_host(): socket(), trying next");
+ continue;
+ }
+
+ if (-1 != connect(server_socket, server->ai_addr,
+ server->ai_addrlen)) {
+ break;
+ }
+ perror("connect_to_host(): connect(), trying next");
+
+ close(server_socket);
+ }
+ /* Make sure we free the result from getaddrinfo(). */
+ freeaddrinfo(gai_result);
+
+ if (NULL == server) {
+ perror("connect_to_host(): no server found, abort");
+ return -1;
+ }
+
+ return server_socket;
+}
+
+static int read_http_request(FILE *client_fd, char *request, size_t length) {
+ char buffer[MAX_REQUEST_LINE];
+
+ if (NULL == fgets(request, (int)length, client_fd)) {
+ if (ferror(client_fd)) {
+ perror("read_http_request(): fgets()");
+ return -1;
+ }
+
+ return -2;
+ }
+
+ while (NULL != fgets(buffer, MAX_REQUEST_LINE, client_fd)) {
+ /* End of header. */
+ if (0 == strcmp(buffer, "\n") || 0 == strcmp(buffer, "\r\n")) {
+ break;
+ }
+ }
+ if (ferror(client_fd)) {
+ perror("read_http_request(): fgets()");
+ return -1;
+ }
+
+ return 0;
+}
ruderich.org/simon / tlsproxy / tlsproxy.git / blobdiff