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Paul Bakker896ac222011-05-20 12:33:05 +00001/*
Paul Bakkercb79ae0b2011-05-20 12:44:16 +00002 * SSL server demonstration program using fork() for handling multiple clients
Paul Bakker896ac222011-05-20 12:33:05 +00003 *
Manuel Pégourié-Gonnard6fb81872015-07-27 11:11:48 +02004 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
Manuel Pégourié-Gonnard37ff1402015-09-04 14:21:07 +02005 * SPDX-License-Identifier: Apache-2.0
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
8 * not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
Paul Bakker896ac222011-05-20 12:33:05 +000018 *
Manuel Pégourié-Gonnardfe446432015-03-06 13:17:10 +000019 * This file is part of mbed TLS (https://tls.mbed.org)
Paul Bakker896ac222011-05-20 12:33:05 +000020 */
21
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020022#if !defined(MBEDTLS_CONFIG_FILE)
Manuel Pégourié-Gonnard7f809972015-03-09 17:05:11 +000023#include "mbedtls/config.h"
Manuel Pégourié-Gonnardcef4ad22014-04-29 12:39:06 +020024#else
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020025#include MBEDTLS_CONFIG_FILE
Manuel Pégourié-Gonnardcef4ad22014-04-29 12:39:06 +020026#endif
Paul Bakker896ac222011-05-20 12:33:05 +000027
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020028#if defined(MBEDTLS_PLATFORM_C)
Manuel Pégourié-Gonnard7f809972015-03-09 17:05:11 +000029#include "mbedtls/platform.h"
Rich Evansf90016a2015-01-19 14:26:37 +000030#else
Rich Evans18b78c72015-02-11 14:06:19 +000031#include <stdio.h>
Andres Amaya Garcia4be53b52018-04-29 20:57:21 +010032#include <stdlib.h>
33#define mbedtls_fprintf fprintf
34#define mbedtls_printf printf
35#define mbedtls_time_t time_t
Manuel Pégourié-Gonnard3ef6a6d2018-12-10 14:31:45 +010036#define mbedtls_exit exit
Andres Amaya Garcia7d429652018-04-30 22:42:33 +010037#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
Andres Amaya Garcia4be53b52018-04-29 20:57:21 +010038#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
39#endif /* MBEDTLS_PLATFORM_C */
Rich Evansf90016a2015-01-19 14:26:37 +000040
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020041#if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_CERTS_C) || \
42 !defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_SSL_TLS_C) || \
43 !defined(MBEDTLS_SSL_SRV_C) || !defined(MBEDTLS_NET_C) || \
44 !defined(MBEDTLS_RSA_C) || !defined(MBEDTLS_CTR_DRBG_C) || \
45 !defined(MBEDTLS_X509_CRT_PARSE_C) || !defined(MBEDTLS_TIMING_C) || \
46 !defined(MBEDTLS_FS_IO) || !defined(MBEDTLS_PEM_PARSE_C)
Paul Bakkercce9d772011-11-18 14:26:47 +000047int main( int argc, char *argv[] )
Paul Bakkerb892b132011-10-12 09:19:43 +000048{
Paul Bakkercce9d772011-11-18 14:26:47 +000049 ((void) argc);
50 ((void) argv);
51
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020052 mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_CERTS_C and/or MBEDTLS_ENTROPY_C "
53 "and/or MBEDTLS_SSL_TLS_C and/or MBEDTLS_SSL_SRV_C and/or "
54 "MBEDTLS_NET_C and/or MBEDTLS_RSA_C and/or "
55 "MBEDTLS_CTR_DRBG_C and/or MBEDTLS_X509_CRT_PARSE_C and/or "
56 "MBEDTLS_TIMING_C and/or MBEDTLS_PEM_PARSE_C not defined.\n");
Paul Bakkerb892b132011-10-12 09:19:43 +000057 return( 0 );
58}
Paul Bakkercce9d772011-11-18 14:26:47 +000059#elif defined(_WIN32)
Rich Evans85b05ec2015-02-12 11:37:29 +000060int main( void )
Paul Bakkerb892b132011-10-12 09:19:43 +000061{
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020062 mbedtls_printf("_WIN32 defined. This application requires fork() and signals "
Paul Bakkerb892b132011-10-12 09:19:43 +000063 "to work correctly.\n");
64 return( 0 );
65}
66#else
Paul Bakker896ac222011-05-20 12:33:05 +000067
Manuel Pégourié-Gonnard4b3e5ef2015-03-27 11:24:27 +010068#include "mbedtls/entropy.h"
69#include "mbedtls/ctr_drbg.h"
70#include "mbedtls/certs.h"
71#include "mbedtls/x509.h"
72#include "mbedtls/ssl.h"
Andres AG788aa4a2016-09-14 14:32:09 +010073#include "mbedtls/net_sockets.h"
Manuel Pégourié-Gonnard4b3e5ef2015-03-27 11:24:27 +010074#include "mbedtls/timing.h"
75
76#include <string.h>
77#include <signal.h>
78
79#if !defined(_MSC_VER) || defined(EFIX64) || defined(EFI32)
80#include <unistd.h>
81#endif
82
83#define HTTP_RESPONSE \
84 "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n" \
85 "<h2>mbed TLS Test Server</h2>\r\n" \
86 "<p>Successful connection using: %s</p>\r\n"
87
Paul Bakker896ac222011-05-20 12:33:05 +000088#define DEBUG_LEVEL 0
89
Manuel Pégourié-Gonnard3ef6a6d2018-12-10 14:31:45 +010090#if defined(MBEDTLS_CHECK_PARAMS)
91#include "mbedtls/platform_util.h"
92void mbedtls_param_failed( const char *failure_condition,
93 const char *file,
94 int line )
Simon Butcher63cb97e2018-12-06 17:43:31 +000095{
Manuel Pégourié-Gonnard3ef6a6d2018-12-10 14:31:45 +010096 mbedtls_printf( "%s:%i: Input param failed - %s\n",
97 file, line, failure_condition );
Simon Butcher63cb97e2018-12-06 17:43:31 +000098 mbedtls_exit( MBEDTLS_EXIT_FAILURE );
99}
100#endif
101
Manuel Pégourié-Gonnard61ee3512015-06-23 17:35:03 +0200102static void my_debug( void *ctx, int level,
103 const char *file, int line,
104 const char *str )
Paul Bakker896ac222011-05-20 12:33:05 +0000105{
Manuel Pégourié-Gonnard61ee3512015-06-23 17:35:03 +0200106 ((void) level);
107
108 mbedtls_fprintf( (FILE *) ctx, "%s:%04d: %s", file, line, str );
109 fflush( (FILE *) ctx );
Paul Bakker896ac222011-05-20 12:33:05 +0000110}
111
Rich Evans85b05ec2015-02-12 11:37:29 +0000112int main( void )
Paul Bakker896ac222011-05-20 12:33:05 +0000113{
Andres Amaya Garcia4be53b52018-04-29 20:57:21 +0100114 int ret = 1, len, cnt = 0, pid;
115 int exit_code = MBEDTLS_EXIT_FAILURE;
Manuel Pégourié-Gonnard5db64322015-06-30 15:40:39 +0200116 mbedtls_net_context listen_fd, client_fd;
Paul Bakker896ac222011-05-20 12:33:05 +0000117 unsigned char buf[1024];
Paul Bakkeref3f8c72013-06-24 13:01:08 +0200118 const char *pers = "ssl_fork_server";
Paul Bakker896ac222011-05-20 12:33:05 +0000119
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200120 mbedtls_entropy_context entropy;
121 mbedtls_ctr_drbg_context ctr_drbg;
122 mbedtls_ssl_context ssl;
Manuel Pégourié-Gonnarddef0bbe2015-05-04 14:56:36 +0200123 mbedtls_ssl_config conf;
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200124 mbedtls_x509_crt srvcert;
125 mbedtls_pk_context pkey;
Paul Bakker896ac222011-05-20 12:33:05 +0000126
Manuel Pégourié-Gonnard5db64322015-06-30 15:40:39 +0200127 mbedtls_net_init( &listen_fd );
128 mbedtls_net_init( &client_fd );
Manuel Pégourié-Gonnarddef0bbe2015-05-04 14:56:36 +0200129 mbedtls_ssl_init( &ssl );
130 mbedtls_ssl_config_init( &conf );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200131 mbedtls_entropy_init( &entropy );
132 mbedtls_pk_init( &pkey );
133 mbedtls_x509_crt_init( &srvcert );
Manuel Pégourié-Gonnardec160c02015-04-28 22:52:30 +0200134 mbedtls_ctr_drbg_init( &ctr_drbg );
Paul Bakker0c226102014-04-17 16:02:36 +0200135
Paul Bakker896ac222011-05-20 12:33:05 +0000136 signal( SIGCHLD, SIG_IGN );
137
138 /*
Paul Bakker508ad5a2011-12-04 17:09:26 +0000139 * 0. Initial seeding of the RNG
140 */
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200141 mbedtls_printf( "\n . Initial seeding of the random generator..." );
Paul Bakker508ad5a2011-12-04 17:09:26 +0000142 fflush( stdout );
143
Manuel Pégourié-Gonnardec160c02015-04-28 22:52:30 +0200144 if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
Paul Bakkeref3f8c72013-06-24 13:01:08 +0200145 (const unsigned char *) pers,
146 strlen( pers ) ) ) != 0 )
Paul Bakker508ad5a2011-12-04 17:09:26 +0000147 {
Janos Follath582a4612016-04-28 23:37:16 +0100148 mbedtls_printf( " failed! mbedtls_ctr_drbg_seed returned %d\n\n", ret );
Paul Bakker508ad5a2011-12-04 17:09:26 +0000149 goto exit;
150 }
151
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200152 mbedtls_printf( " ok\n" );
Paul Bakker508ad5a2011-12-04 17:09:26 +0000153
154 /*
Paul Bakker896ac222011-05-20 12:33:05 +0000155 * 1. Load the certificates and private RSA key
156 */
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200157 mbedtls_printf( " . Loading the server cert. and key..." );
Paul Bakker896ac222011-05-20 12:33:05 +0000158 fflush( stdout );
159
Paul Bakker896ac222011-05-20 12:33:05 +0000160 /*
161 * This demonstration program uses embedded test certificates.
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200162 * Instead, you may want to use mbedtls_x509_crt_parse_file() to read the
163 * server and CA certificates, as well as mbedtls_pk_parse_keyfile().
Paul Bakker896ac222011-05-20 12:33:05 +0000164 */
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200165 ret = mbedtls_x509_crt_parse( &srvcert, (const unsigned char *) mbedtls_test_srv_crt,
166 mbedtls_test_srv_crt_len );
Paul Bakker896ac222011-05-20 12:33:05 +0000167 if( ret != 0 )
168 {
Janos Follath582a4612016-04-28 23:37:16 +0100169 mbedtls_printf( " failed! mbedtls_x509_crt_parse returned %d\n\n", ret );
Paul Bakker896ac222011-05-20 12:33:05 +0000170 goto exit;
171 }
172
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200173 ret = mbedtls_x509_crt_parse( &srvcert, (const unsigned char *) mbedtls_test_cas_pem,
174 mbedtls_test_cas_pem_len );
Paul Bakker896ac222011-05-20 12:33:05 +0000175 if( ret != 0 )
176 {
Janos Follath582a4612016-04-28 23:37:16 +0100177 mbedtls_printf( " failed! mbedtls_x509_crt_parse returned %d\n\n", ret );
Paul Bakker896ac222011-05-20 12:33:05 +0000178 goto exit;
179 }
180
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200181 ret = mbedtls_pk_parse_key( &pkey, (const unsigned char *) mbedtls_test_srv_key,
182 mbedtls_test_srv_key_len, NULL, 0 );
Paul Bakker896ac222011-05-20 12:33:05 +0000183 if( ret != 0 )
184 {
Janos Follath582a4612016-04-28 23:37:16 +0100185 mbedtls_printf( " failed! mbedtls_pk_parse_key returned %d\n\n", ret );
Paul Bakker896ac222011-05-20 12:33:05 +0000186 goto exit;
187 }
188
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200189 mbedtls_printf( " ok\n" );
Paul Bakker896ac222011-05-20 12:33:05 +0000190
191 /*
Manuel Pégourié-Gonnard0af00e82015-05-11 11:32:43 +0200192 * 1b. Prepare SSL configuration
193 */
194 mbedtls_printf( " . Configuring SSL..." );
195 fflush( stdout );
196
197 if( ( ret = mbedtls_ssl_config_defaults( &conf,
198 MBEDTLS_SSL_IS_SERVER,
Manuel Pégourié-Gonnardb31c5f62015-06-17 13:53:47 +0200199 MBEDTLS_SSL_TRANSPORT_STREAM,
200 MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 )
Manuel Pégourié-Gonnard0af00e82015-05-11 11:32:43 +0200201 {
Janos Follath582a4612016-04-28 23:37:16 +0100202 mbedtls_printf( " failed! mbedtls_ssl_config_defaults returned %d\n\n", ret );
Manuel Pégourié-Gonnard0af00e82015-05-11 11:32:43 +0200203 goto exit;
204 }
205
206 mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg );
207 mbedtls_ssl_conf_dbg( &conf, my_debug, stdout );
208
209 mbedtls_ssl_conf_ca_chain( &conf, srvcert.next, NULL );
210 if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &srvcert, &pkey ) ) != 0 )
211 {
Janos Follath582a4612016-04-28 23:37:16 +0100212 mbedtls_printf( " failed! mbedtls_ssl_conf_own_cert returned %d\n\n", ret );
Manuel Pégourié-Gonnard0af00e82015-05-11 11:32:43 +0200213 goto exit;
214 }
215
216 mbedtls_printf( " ok\n" );
217
218 /*
Paul Bakker896ac222011-05-20 12:33:05 +0000219 * 2. Setup the listening TCP socket
220 */
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200221 mbedtls_printf( " . Bind on https://localhost:4433/ ..." );
Paul Bakker896ac222011-05-20 12:33:05 +0000222 fflush( stdout );
223
Manuel Pégourié-Gonnardc0d74942015-06-23 12:30:57 +0200224 if( ( ret = mbedtls_net_bind( &listen_fd, NULL, "4433", MBEDTLS_NET_PROTO_TCP ) ) != 0 )
Paul Bakker896ac222011-05-20 12:33:05 +0000225 {
Janos Follath582a4612016-04-28 23:37:16 +0100226 mbedtls_printf( " failed! mbedtls_net_bind returned %d\n\n", ret );
Paul Bakker896ac222011-05-20 12:33:05 +0000227 goto exit;
228 }
229
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200230 mbedtls_printf( " ok\n" );
Paul Bakker896ac222011-05-20 12:33:05 +0000231
232 while( 1 )
233 {
234 /*
235 * 3. Wait until a client connects
236 */
Manuel Pégourié-Gonnard5db64322015-06-30 15:40:39 +0200237 mbedtls_net_init( &client_fd );
238 mbedtls_ssl_init( &ssl );
Paul Bakker896ac222011-05-20 12:33:05 +0000239
Janos Follath582a4612016-04-28 23:37:16 +0100240 mbedtls_printf( " . Waiting for a remote connection ...\n" );
Paul Bakker896ac222011-05-20 12:33:05 +0000241 fflush( stdout );
242
Manuel Pégourié-Gonnard5db64322015-06-30 15:40:39 +0200243 if( ( ret = mbedtls_net_accept( &listen_fd, &client_fd,
Manuel Pégourié-Gonnard0b104b02015-05-14 21:52:40 +0200244 NULL, 0, NULL ) ) != 0 )
Paul Bakker896ac222011-05-20 12:33:05 +0000245 {
Janos Follath582a4612016-04-28 23:37:16 +0100246 mbedtls_printf( " failed! mbedtls_net_accept returned %d\n\n", ret );
Paul Bakker896ac222011-05-20 12:33:05 +0000247 goto exit;
248 }
249
Paul Bakker896ac222011-05-20 12:33:05 +0000250 /*
251 * 3.5. Forking server thread
252 */
253
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200254 mbedtls_printf( " . Forking to handle connection ..." );
Paul Bakker896ac222011-05-20 12:33:05 +0000255 fflush( stdout );
256
Janos Follath582a4612016-04-28 23:37:16 +0100257 pid = fork();
258
Paul Bakker896ac222011-05-20 12:33:05 +0000259 if( pid < 0 )
260 {
Janos Follath582a4612016-04-28 23:37:16 +0100261 mbedtls_printf(" failed! fork returned %d\n\n", pid );
Paul Bakker896ac222011-05-20 12:33:05 +0000262 goto exit;
263 }
264
Paul Bakker896ac222011-05-20 12:33:05 +0000265 if( pid != 0 )
266 {
Janos Follath582a4612016-04-28 23:37:16 +0100267 mbedtls_printf( " ok\n" );
268
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200269 if( ( ret = mbedtls_ctr_drbg_reseed( &ctr_drbg,
Paul Bakkeref3f8c72013-06-24 13:01:08 +0200270 (const unsigned char *) "parent",
271 6 ) ) != 0 )
Paul Bakker508ad5a2011-12-04 17:09:26 +0000272 {
Janos Follath582a4612016-04-28 23:37:16 +0100273 mbedtls_printf( " failed! mbedtls_ctr_drbg_reseed returned %d\n\n", ret );
Paul Bakker508ad5a2011-12-04 17:09:26 +0000274 goto exit;
275 }
276
Paul Bakker896ac222011-05-20 12:33:05 +0000277 continue;
278 }
279
Janos Follathfe049db2016-03-31 11:37:33 +0100280 mbedtls_net_init( &listen_fd );
Paul Bakker896ac222011-05-20 12:33:05 +0000281
Janos Follath582a4612016-04-28 23:37:16 +0100282 pid = getpid();
283
Paul Bakker896ac222011-05-20 12:33:05 +0000284 /*
285 * 4. Setup stuff
286 */
Janos Follath582a4612016-04-28 23:37:16 +0100287 mbedtls_printf( "pid %d: Setting up the SSL data.\n", pid );
Paul Bakker896ac222011-05-20 12:33:05 +0000288 fflush( stdout );
289
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200290 if( ( ret = mbedtls_ctr_drbg_reseed( &ctr_drbg,
Paul Bakkeref3f8c72013-06-24 13:01:08 +0200291 (const unsigned char *) "child",
292 5 ) ) != 0 )
Paul Bakker508ad5a2011-12-04 17:09:26 +0000293 {
Janos Follath582a4612016-04-28 23:37:16 +0100294 mbedtls_printf(
295 "pid %d: SSL setup failed! mbedtls_ctr_drbg_reseed returned %d\n\n",
296 pid, ret );
Paul Bakker508ad5a2011-12-04 17:09:26 +0000297 goto exit;
298 }
Paul Bakker0c226102014-04-17 16:02:36 +0200299
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +0200300 if( ( ret = mbedtls_ssl_setup( &ssl, &conf ) ) != 0 )
301 {
Janos Follath582a4612016-04-28 23:37:16 +0100302 mbedtls_printf(
303 "pid %d: SSL setup failed! mbedtls_ssl_setup returned %d\n\n",
304 pid, ret );
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +0200305 goto exit;
306 }
307
308 mbedtls_ssl_set_bio( &ssl, &client_fd, mbedtls_net_send, mbedtls_net_recv, NULL );
309
Janos Follath582a4612016-04-28 23:37:16 +0100310 mbedtls_printf( "pid %d: SSL setup ok\n", pid );
Manuel Pégourié-Gonnard0af00e82015-05-11 11:32:43 +0200311
Paul Bakker896ac222011-05-20 12:33:05 +0000312 /*
313 * 5. Handshake
314 */
Janos Follath582a4612016-04-28 23:37:16 +0100315 mbedtls_printf( "pid %d: Performing the SSL/TLS handshake.\n", pid );
Paul Bakker896ac222011-05-20 12:33:05 +0000316 fflush( stdout );
317
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200318 while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 )
Paul Bakker896ac222011-05-20 12:33:05 +0000319 {
Manuel Pégourié-Gonnard88369942015-05-06 16:19:31 +0100320 if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
Paul Bakker896ac222011-05-20 12:33:05 +0000321 {
Janos Follath582a4612016-04-28 23:37:16 +0100322 mbedtls_printf(
323 "pid %d: SSL handshake failed! mbedtls_ssl_handshake returned %d\n\n",
324 pid, ret );
Paul Bakker896ac222011-05-20 12:33:05 +0000325 goto exit;
326 }
327 }
328
Janos Follath582a4612016-04-28 23:37:16 +0100329 mbedtls_printf( "pid %d: SSL handshake ok\n", pid );
Paul Bakker896ac222011-05-20 12:33:05 +0000330
331 /*
332 * 6. Read the HTTP Request
333 */
Janos Follath582a4612016-04-28 23:37:16 +0100334 mbedtls_printf( "pid %d: Start reading from client.\n", pid );
Paul Bakker896ac222011-05-20 12:33:05 +0000335 fflush( stdout );
336
337 do
338 {
339 len = sizeof( buf ) - 1;
340 memset( buf, 0, sizeof( buf ) );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200341 ret = mbedtls_ssl_read( &ssl, buf, len );
Paul Bakker896ac222011-05-20 12:33:05 +0000342
Manuel Pégourié-Gonnard88369942015-05-06 16:19:31 +0100343 if( ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE )
Paul Bakker896ac222011-05-20 12:33:05 +0000344 continue;
345
346 if( ret <= 0 )
347 {
348 switch( ret )
349 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200350 case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY:
Janos Follath582a4612016-04-28 23:37:16 +0100351 mbedtls_printf( "pid %d: connection was closed gracefully\n", pid );
Paul Bakker896ac222011-05-20 12:33:05 +0000352 break;
353
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200354 case MBEDTLS_ERR_NET_CONN_RESET:
Janos Follath582a4612016-04-28 23:37:16 +0100355 mbedtls_printf( "pid %d: connection was reset by peer\n", pid );
Paul Bakker896ac222011-05-20 12:33:05 +0000356 break;
357
358 default:
Janos Follath582a4612016-04-28 23:37:16 +0100359 mbedtls_printf( "pid %d: mbedtls_ssl_read returned %d\n", pid, ret );
Paul Bakker896ac222011-05-20 12:33:05 +0000360 break;
361 }
362
363 break;
364 }
365
366 len = ret;
Janos Follath582a4612016-04-28 23:37:16 +0100367 mbedtls_printf( "pid %d: %d bytes read\n\n%s", pid, len, (char *) buf );
Manuel Pégourié-Gonnard401caad2015-02-14 15:53:24 +0000368
369 if( ret > 0 )
370 break;
Paul Bakker896ac222011-05-20 12:33:05 +0000371 }
Manuel Pégourié-Gonnard401caad2015-02-14 15:53:24 +0000372 while( 1 );
Paul Bakker896ac222011-05-20 12:33:05 +0000373
374 /*
375 * 7. Write the 200 Response
376 */
Janos Follath582a4612016-04-28 23:37:16 +0100377 mbedtls_printf( "pid %d: Start writing to client.\n", pid );
Paul Bakker896ac222011-05-20 12:33:05 +0000378 fflush( stdout );
379
380 len = sprintf( (char *) buf, HTTP_RESPONSE,
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200381 mbedtls_ssl_get_ciphersuite( &ssl ) );
Paul Bakker896ac222011-05-20 12:33:05 +0000382
Paul Bakker030decd2014-04-17 16:03:23 +0200383 while( cnt++ < 100 )
Paul Bakker896ac222011-05-20 12:33:05 +0000384 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200385 while( ( ret = mbedtls_ssl_write( &ssl, buf, len ) ) <= 0 )
Paul Bakker896ac222011-05-20 12:33:05 +0000386 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200387 if( ret == MBEDTLS_ERR_NET_CONN_RESET )
Paul Bakker896ac222011-05-20 12:33:05 +0000388 {
Janos Follath582a4612016-04-28 23:37:16 +0100389 mbedtls_printf(
390 "pid %d: Write failed! peer closed the connection\n\n", pid );
Paul Bakker896ac222011-05-20 12:33:05 +0000391 goto exit;
392 }
393
Manuel Pégourié-Gonnard88369942015-05-06 16:19:31 +0100394 if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
Paul Bakker896ac222011-05-20 12:33:05 +0000395 {
Janos Follath582a4612016-04-28 23:37:16 +0100396 mbedtls_printf(
397 "pid %d: Write failed! mbedtls_ssl_write returned %d\n\n",
398 pid, ret );
Paul Bakker896ac222011-05-20 12:33:05 +0000399 goto exit;
400 }
401 }
402 len = ret;
Janos Follath582a4612016-04-28 23:37:16 +0100403 mbedtls_printf( "pid %d: %d bytes written\n\n%s\n", pid, len, (char *) buf );
Paul Bakker896ac222011-05-20 12:33:05 +0000404
Manuel Pégourié-Gonnarda63bc942015-05-14 18:22:47 +0200405 mbedtls_net_usleep( 1000000 );
Paul Bakker896ac222011-05-20 12:33:05 +0000406 }
407
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200408 mbedtls_ssl_close_notify( &ssl );
Paul Bakker896ac222011-05-20 12:33:05 +0000409 goto exit;
410 }
411
Andres Amaya Garcia4be53b52018-04-29 20:57:21 +0100412 exit_code = MBEDTLS_EXIT_SUCCESS;
413
Paul Bakker896ac222011-05-20 12:33:05 +0000414exit:
Manuel Pégourié-Gonnard3d7d00a2015-06-30 15:55:03 +0200415 mbedtls_net_free( &client_fd );
416 mbedtls_net_free( &listen_fd );
Paul Bakker0c226102014-04-17 16:02:36 +0200417
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200418 mbedtls_x509_crt_free( &srvcert );
419 mbedtls_pk_free( &pkey );
420 mbedtls_ssl_free( &ssl );
Manuel Pégourié-Gonnarddef0bbe2015-05-04 14:56:36 +0200421 mbedtls_ssl_config_free( &conf );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200422 mbedtls_ctr_drbg_free( &ctr_drbg );
423 mbedtls_entropy_free( &entropy );
Paul Bakker896ac222011-05-20 12:33:05 +0000424
Paul Bakkercce9d772011-11-18 14:26:47 +0000425#if defined(_WIN32)
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200426 mbedtls_printf( " Press Enter to exit this program.\n" );
Paul Bakker896ac222011-05-20 12:33:05 +0000427 fflush( stdout ); getchar();
428#endif
429
Andres Amaya Garcia4be53b52018-04-29 20:57:21 +0100430 return( exit_code );
Paul Bakker896ac222011-05-20 12:33:05 +0000431}
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200432#endif /* MBEDTLS_BIGNUM_C && MBEDTLS_CERTS_C && MBEDTLS_ENTROPY_C &&
433 MBEDTLS_SSL_TLS_C && MBEDTLS_SSL_SRV_C && MBEDTLS_NET_C &&
434 MBEDTLS_RSA_C && MBEDTLS_CTR_DRBG_C && MBEDTLS_PEM_PARSE_C &&
Manuel Pégourié-Gonnard4b3e5ef2015-03-27 11:24:27 +0100435 ! _WIN32 */