1 /* Copyright (c) 2014, Google Inc.
2 *
3 * Permission to use, copy, modify, and/or distribute this software for any
4 * purpose with or without fee is hereby granted, provided that the above
5 * copyright notice and this permission notice appear in all copies.
6 *
7 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
8 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
10 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
11 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
12 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
13 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
14
15 #include <openssl/base.h>
16
17 #include <stdio.h>
18
19 #include <openssl/err.h>
20 #include <openssl/pem.h>
21 #include <openssl/ssl.h>
22
23 #include "../crypto/test/scoped_types.h"
24 #include "../ssl/test/scoped_types.h"
25 #include "internal.h"
26 #include "transport_common.h"
27
28
29 static const struct argument kArguments[] = {
30 {
31 "-connect", kRequiredArgument,
32 "The hostname and port of the server to connect to, e.g. foo.com:443",
33 },
34 {
35 "-cipher", kOptionalArgument,
36 "An OpenSSL-style cipher suite string that configures the offered ciphers",
37 },
38 {
39 "-max-version", kOptionalArgument,
40 "The maximum acceptable protocol version",
41 },
42 {
43 "-min-version", kOptionalArgument,
44 "The minimum acceptable protocol version",
45 },
46 {
47 "-server-name", kOptionalArgument,
48 "The server name to advertise",
49 },
50 {
51 "-select-next-proto", kOptionalArgument,
52 "An NPN protocol to select if the server supports NPN",
53 },
54 {
55 "-alpn-protos", kOptionalArgument,
56 "A comma-separated list of ALPN protocols to advertise",
57 },
58 {
59 "-fallback-scsv", kBooleanArgument,
60 "Enable FALLBACK_SCSV",
61 },
62 {
63 "-ocsp-stapling", kBooleanArgument,
64 "Advertise support for OCSP stabling",
65 },
66 {
67 "-signed-certificate-timestamps", kBooleanArgument,
68 "Advertise support for signed certificate timestamps",
69 },
70 {
71 "-channel-id-key", kOptionalArgument,
72 "The key to use for signing a channel ID",
73 },
74 {
75 "-false-start", kBooleanArgument,
76 "Enable False Start",
77 },
78 { "-session-in", kOptionalArgument,
79 "A file containing a session to resume.",
80 },
81 { "-session-out", kOptionalArgument,
82 "A file to write the negotiated session to.",
83 },
84 {
85 "-key", kOptionalArgument,
86 "Private-key file to use (default is no client certificate)",
87 },
88 {
89 "", kOptionalArgument, "",
90 },
91 };
92
LoadPrivateKey(const std::string & file)93 static ScopedEVP_PKEY LoadPrivateKey(const std::string &file) {
94 ScopedBIO bio(BIO_new(BIO_s_file()));
95 if (!bio || !BIO_read_filename(bio.get(), file.c_str())) {
96 return nullptr;
97 }
98 ScopedEVP_PKEY pkey(PEM_read_bio_PrivateKey(bio.get(), nullptr, nullptr,
99 nullptr));
100 return pkey;
101 }
102
VersionFromString(uint16_t * out_version,const std::string & version)103 static bool VersionFromString(uint16_t *out_version,
104 const std::string& version) {
105 if (version == "ssl3") {
106 *out_version = SSL3_VERSION;
107 return true;
108 } else if (version == "tls1" || version == "tls1.0") {
109 *out_version = TLS1_VERSION;
110 return true;
111 } else if (version == "tls1.1") {
112 *out_version = TLS1_1_VERSION;
113 return true;
114 } else if (version == "tls1.2") {
115 *out_version = TLS1_2_VERSION;
116 return true;
117 }
118 return false;
119 }
120
NextProtoSelectCallback(SSL * ssl,uint8_t ** out,uint8_t * outlen,const uint8_t * in,unsigned inlen,void * arg)121 static int NextProtoSelectCallback(SSL* ssl, uint8_t** out, uint8_t* outlen,
122 const uint8_t* in, unsigned inlen, void* arg) {
123 *out = reinterpret_cast<uint8_t *>(arg);
124 *outlen = strlen(reinterpret_cast<const char *>(arg));
125 return SSL_TLSEXT_ERR_OK;
126 }
127
128 static FILE *g_keylog_file = nullptr;
129
KeyLogCallback(const SSL * ssl,const char * line)130 static void KeyLogCallback(const SSL *ssl, const char *line) {
131 fprintf(g_keylog_file, "%s\n", line);
132 fflush(g_keylog_file);
133 }
134
Client(const std::vector<std::string> & args)135 bool Client(const std::vector<std::string> &args) {
136 if (!InitSocketLibrary()) {
137 return false;
138 }
139
140 std::map<std::string, std::string> args_map;
141
142 if (!ParseKeyValueArguments(&args_map, args, kArguments)) {
143 PrintUsage(kArguments);
144 return false;
145 }
146
147 ScopedSSL_CTX ctx(SSL_CTX_new(SSLv23_client_method()));
148
149 const char *keylog_file = getenv("SSLKEYLOGFILE");
150 if (keylog_file) {
151 g_keylog_file = fopen(keylog_file, "a");
152 if (g_keylog_file == nullptr) {
153 perror("fopen");
154 return false;
155 }
156 SSL_CTX_set_keylog_callback(ctx.get(), KeyLogCallback);
157 }
158
159 if (args_map.count("-cipher") != 0 &&
160 !SSL_CTX_set_cipher_list(ctx.get(), args_map["-cipher"].c_str())) {
161 fprintf(stderr, "Failed setting cipher list\n");
162 return false;
163 }
164
165 if (args_map.count("-max-version") != 0) {
166 uint16_t version;
167 if (!VersionFromString(&version, args_map["-max-version"])) {
168 fprintf(stderr, "Unknown protocol version: '%s'\n",
169 args_map["-max-version"].c_str());
170 return false;
171 }
172 SSL_CTX_set_max_version(ctx.get(), version);
173 }
174
175 if (args_map.count("-min-version") != 0) {
176 uint16_t version;
177 if (!VersionFromString(&version, args_map["-min-version"])) {
178 fprintf(stderr, "Unknown protocol version: '%s'\n",
179 args_map["-min-version"].c_str());
180 return false;
181 }
182 SSL_CTX_set_min_version(ctx.get(), version);
183 }
184
185 if (args_map.count("-select-next-proto") != 0) {
186 const std::string &proto = args_map["-select-next-proto"];
187 if (proto.size() > 255) {
188 fprintf(stderr, "Bad NPN protocol: '%s'\n", proto.c_str());
189 return false;
190 }
191 // |SSL_CTX_set_next_proto_select_cb| is not const-correct.
192 SSL_CTX_set_next_proto_select_cb(ctx.get(), NextProtoSelectCallback,
193 const_cast<char *>(proto.c_str()));
194 }
195
196 if (args_map.count("-alpn-protos") != 0) {
197 const std::string &alpn_protos = args_map["-alpn-protos"];
198 std::vector<uint8_t> wire;
199 size_t i = 0;
200 while (i <= alpn_protos.size()) {
201 size_t j = alpn_protos.find(',', i);
202 if (j == std::string::npos) {
203 j = alpn_protos.size();
204 }
205 size_t len = j - i;
206 if (len > 255) {
207 fprintf(stderr, "Invalid ALPN protocols: '%s'\n", alpn_protos.c_str());
208 return false;
209 }
210 wire.push_back(static_cast<uint8_t>(len));
211 wire.resize(wire.size() + len);
212 memcpy(wire.data() + wire.size() - len, alpn_protos.data() + i, len);
213 i = j + 1;
214 }
215 if (SSL_CTX_set_alpn_protos(ctx.get(), wire.data(), wire.size()) != 0) {
216 return false;
217 }
218 }
219
220 if (args_map.count("-fallback-scsv") != 0) {
221 SSL_CTX_set_mode(ctx.get(), SSL_MODE_SEND_FALLBACK_SCSV);
222 }
223
224 if (args_map.count("-ocsp-stapling") != 0) {
225 SSL_CTX_enable_ocsp_stapling(ctx.get());
226 }
227
228 if (args_map.count("-signed-certificate-timestamps") != 0) {
229 SSL_CTX_enable_signed_cert_timestamps(ctx.get());
230 }
231
232 if (args_map.count("-channel-id-key") != 0) {
233 ScopedEVP_PKEY pkey = LoadPrivateKey(args_map["-channel-id-key"]);
234 if (!pkey || !SSL_CTX_set1_tls_channel_id(ctx.get(), pkey.get())) {
235 return false;
236 }
237 }
238
239 if (args_map.count("-false-start") != 0) {
240 SSL_CTX_set_mode(ctx.get(), SSL_MODE_ENABLE_FALSE_START);
241 }
242
243 if (args_map.count("-key") != 0) {
244 const std::string &key = args_map["-key"];
245 if (!SSL_CTX_use_PrivateKey_file(ctx.get(), key.c_str(), SSL_FILETYPE_PEM)) {
246 fprintf(stderr, "Failed to load private key: %s\n", key.c_str());
247 return false;
248 }
249 if (!SSL_CTX_use_certificate_chain_file(ctx.get(), key.c_str())) {
250 fprintf(stderr, "Failed to load cert chain: %s\n", key.c_str());
251 return false;
252 }
253 }
254
255 int sock = -1;
256 if (!Connect(&sock, args_map["-connect"])) {
257 return false;
258 }
259
260 ScopedBIO bio(BIO_new_socket(sock, BIO_CLOSE));
261 ScopedSSL ssl(SSL_new(ctx.get()));
262
263 if (args_map.count("-server-name") != 0) {
264 SSL_set_tlsext_host_name(ssl.get(), args_map["-server-name"].c_str());
265 }
266
267 if (args_map.count("-session-in") != 0) {
268 ScopedBIO in(BIO_new_file(args_map["-session-in"].c_str(), "rb"));
269 if (!in) {
270 fprintf(stderr, "Error reading session\n");
271 ERR_print_errors_cb(PrintErrorCallback, stderr);
272 return false;
273 }
274 ScopedSSL_SESSION session(PEM_read_bio_SSL_SESSION(in.get(), nullptr,
275 nullptr, nullptr));
276 if (!session) {
277 fprintf(stderr, "Error reading session\n");
278 ERR_print_errors_cb(PrintErrorCallback, stderr);
279 return false;
280 }
281 SSL_set_session(ssl.get(), session.get());
282 }
283
284 SSL_set_bio(ssl.get(), bio.get(), bio.get());
285 bio.release();
286
287 int ret = SSL_connect(ssl.get());
288 if (ret != 1) {
289 int ssl_err = SSL_get_error(ssl.get(), ret);
290 fprintf(stderr, "Error while connecting: %d\n", ssl_err);
291 ERR_print_errors_cb(PrintErrorCallback, stderr);
292 return false;
293 }
294
295 fprintf(stderr, "Connected.\n");
296 PrintConnectionInfo(ssl.get());
297
298 if (args_map.count("-session-out") != 0) {
299 ScopedBIO out(BIO_new_file(args_map["-session-out"].c_str(), "wb"));
300 if (!out ||
301 !PEM_write_bio_SSL_SESSION(out.get(), SSL_get0_session(ssl.get()))) {
302 fprintf(stderr, "Error while saving session:\n");
303 ERR_print_errors_cb(PrintErrorCallback, stderr);
304 return false;
305 }
306 }
307
308 bool ok = TransferData(ssl.get(), sock);
309
310 return ok;
311 }
312