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ssl_server2.c
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/*
* SSL client with options
*
* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This file is part of mbed TLS (https://tls.mbed.org)
*/
#if !defined(MBEDTLS_CONFIG_FILE)
#include "mbedtls/config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#if defined(MBEDTLS_PLATFORM_C)
#include "mbedtls/platform.h"
#else
#include <stdio.h>
#include <stdlib.h>
#define mbedtls_calloc calloc
#define mbedtls_free free
#define mbedtls_time time
#define mbedtls_time_t time_t
#define mbedtls_calloc calloc
#define mbedtls_fprintf fprintf
#define mbedtls_printf printf
#define mbedtls_exit exit
#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
#endif
#if !defined(MBEDTLS_ENTROPY_C) || \
!defined(MBEDTLS_SSL_TLS_C) || !defined(MBEDTLS_SSL_SRV_C) || \
!defined(MBEDTLS_NET_C) || !defined(MBEDTLS_CTR_DRBG_C)
int main( void )
{
mbedtls_printf("MBEDTLS_ENTROPY_C and/or "
"MBEDTLS_SSL_TLS_C and/or MBEDTLS_SSL_SRV_C and/or "
"MBEDTLS_NET_C and/or MBEDTLS_CTR_DRBG_C and/or not defined.\n");
return( 0 );
}
#else
#include "mbedtls/net_sockets.h"
#include "mbedtls/ssl.h"
#include "mbedtls/entropy.h"
#include "mbedtls/ctr_drbg.h"
#include "mbedtls/certs.h"
#include "mbedtls/x509.h"
#include "mbedtls/error.h"
#include "mbedtls/debug.h"
#include "mbedtls/timing.h"
#if defined(MBEDTLS_USE_PSA_CRYPTO)
#include "psa/crypto.h"
#include "mbedtls/psa_util.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#if !defined(_MSC_VER)
#include <inttypes.h>
#endif
#if !defined(_WIN32)
#include <signal.h>
#endif
#if defined(MBEDTLS_SSL_CACHE_C)
#include "mbedtls/ssl_cache.h"
#endif
#if defined(MBEDTLS_SSL_TICKET_C)
#include "mbedtls/ssl_ticket.h"
#endif
#if defined(MBEDTLS_SSL_COOKIE_C)
#include "mbedtls/ssl_cookie.h"
#endif
#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
#include "mbedtls/memory_buffer_alloc.h"
#endif
#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION) && defined(MBEDTLS_FS_IO)
#define SNI_OPTION
#endif
#if defined(_WIN32)
#include <windows.h>
#endif
/* Size of memory to be allocated for the heap, when using the library's memory
* management and MBEDTLS_MEMORY_BUFFER_ALLOC_C is enabled. */
#define MEMORY_HEAP_SIZE 120000
#define DFL_SERVER_ADDR NULL
#define DFL_SERVER_PORT "4433"
#define DFL_RESPONSE_SIZE -1
#define DFL_DEBUG_LEVEL 0
#define DFL_NBIO 0
#define DFL_EVENT 0
#define DFL_READ_TIMEOUT 0
#define DFL_CA_FILE ""
#define DFL_CA_PATH ""
#define DFL_CRT_FILE ""
#define DFL_KEY_FILE ""
#define DFL_CRT_FILE2 ""
#define DFL_KEY_FILE2 ""
#define DFL_ASYNC_OPERATIONS "-"
#define DFL_ASYNC_PRIVATE_DELAY1 ( -1 )
#define DFL_ASYNC_PRIVATE_DELAY2 ( -1 )
#define DFL_ASYNC_PRIVATE_ERROR ( 0 )
#define DFL_PSK ""
#define DFL_PSK_OPAQUE 0
#define DFL_PSK_LIST_OPAQUE 0
#define DFL_PSK_IDENTITY "Client_identity"
#define DFL_ECJPAKE_PW NULL
#define DFL_PSK_LIST NULL
#define DFL_FORCE_CIPHER 0
#define DFL_VERSION_SUITES NULL
#define DFL_RENEGOTIATION MBEDTLS_SSL_RENEGOTIATION_DISABLED
#define DFL_ALLOW_LEGACY -2
#define DFL_RENEGOTIATE 0
#define DFL_RENEGO_DELAY -2
#define DFL_RENEGO_PERIOD ( (uint64_t)-1 )
#define DFL_EXCHANGES 1
#define DFL_MIN_VERSION -1
#define DFL_MAX_VERSION -1
#define DFL_ARC4 -1
#define DFL_SHA1 -1
#define DFL_CID_ENABLED 0
#define DFL_CID_VALUE ""
#define DFL_CID_ENABLED_RENEGO -1
#define DFL_CID_VALUE_RENEGO NULL
#define DFL_AUTH_MODE -1
#define DFL_CERT_REQ_CA_LIST MBEDTLS_SSL_CERT_REQ_CA_LIST_ENABLED
#define DFL_MFL_CODE MBEDTLS_SSL_MAX_FRAG_LEN_NONE
#define DFL_TRUNC_HMAC -1
#define DFL_TICKETS MBEDTLS_SSL_SESSION_TICKETS_ENABLED
#define DFL_TICKET_TIMEOUT 86400
#define DFL_CACHE_MAX -1
#define DFL_CACHE_TIMEOUT -1
#define DFL_SNI NULL
#define DFL_ALPN_STRING NULL
#define DFL_CURVES NULL
#define DFL_DHM_FILE NULL
#define DFL_TRANSPORT MBEDTLS_SSL_TRANSPORT_STREAM
#define DFL_COOKIES 1
#define DFL_ANTI_REPLAY -1
#define DFL_HS_TO_MIN 0
#define DFL_HS_TO_MAX 0
#define DFL_DTLS_MTU -1
#define DFL_BADMAC_LIMIT -1
#define DFL_DGRAM_PACKING 1
#define DFL_EXTENDED_MS -1
#define DFL_ETM -1
#define DFL_CA_CALLBACK 0
#define DFL_EAP_TLS 0
#define DFL_REPRODUCIBLE 0
#define LONG_RESPONSE "<p>01-blah-blah-blah-blah-blah-blah-blah-blah-blah\r\n" \
"02-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah\r\n" \
"03-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah\r\n" \
"04-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah\r\n" \
"05-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah\r\n" \
"06-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah\r\n" \
"07-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah</p>\r\n"
/* Uncomment LONG_RESPONSE at the end of HTTP_RESPONSE to test sending longer
* packets (for fragmentation purposes) */
#define HTTP_RESPONSE \
"HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n" \
"<h2>mbed TLS Test Server</h2>\r\n" \
"<p>Successful connection using: %s</p>\r\n" // LONG_RESPONSE
/*
* Size of the basic I/O buffer. Able to hold our default response.
*
* You will need to adapt the mbedtls_ssl_get_bytes_avail() test in ssl-opt.sh
* if you change this value to something outside the range <= 100 or > 500
*/
#define DFL_IO_BUF_LEN 200
#if defined(MBEDTLS_X509_CRT_PARSE_C)
#if defined(MBEDTLS_FS_IO)
#define USAGE_IO \
" ca_file=%%s The single file containing the top-level CA(s) you fully trust\n" \
" default: \"\" (pre-loaded)\n" \
" use \"none\" to skip loading any top-level CAs.\n" \
" ca_path=%%s The path containing the top-level CA(s) you fully trust\n" \
" default: \"\" (pre-loaded) (overrides ca_file)\n" \
" use \"none\" to skip loading any top-level CAs.\n" \
" crt_file=%%s Your own cert and chain (in bottom to top order, top may be omitted)\n" \
" default: see note after key_file2\n" \
" key_file=%%s default: see note after key_file2\n" \
" crt_file2=%%s Your second cert and chain (in bottom to top order, top may be omitted)\n" \
" default: see note after key_file2\n" \
" key_file2=%%s default: see note below\n" \
" note: if neither crt_file/key_file nor crt_file2/key_file2 are used,\n" \
" preloaded certificate(s) and key(s) are used if available\n" \
" dhm_file=%%s File containing Diffie-Hellman parameters\n" \
" default: preloaded parameters\n"
#else
#define USAGE_IO \
"\n" \
" No file operations available (MBEDTLS_FS_IO not defined)\n" \
"\n"
#endif /* MBEDTLS_FS_IO */
#else
#define USAGE_IO ""
#endif /* MBEDTLS_X509_CRT_PARSE_C */
#if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
#define USAGE_SSL_ASYNC \
" async_operations=%%c... d=decrypt, s=sign (default: -=off)\n" \
" async_private_delay1=%%d Asynchronous delay for key_file or preloaded key\n" \
" async_private_delay2=%%d Asynchronous delay for key_file2 and sni\n" \
" default: -1 (not asynchronous)\n" \
" async_private_error=%%d Async callback error injection (default=0=none,\n" \
" 1=start, 2=cancel, 3=resume, negative=first time only)"
#else
#define USAGE_SSL_ASYNC ""
#endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
#define USAGE_CID \
" cid=%%d Disable (0) or enable (1) the use of the DTLS Connection ID extension.\n" \
" default: 0 (disabled)\n" \
" cid_renego=%%d Disable (0) or enable (1) the use of the DTLS Connection ID extension during renegotiation.\n" \
" default: same as 'cid' parameter\n" \
" cid_val=%%s The CID to use for incoming messages (in hex, without 0x).\n" \
" default: \"\"\n" \
" cid_val_renego=%%s The CID to use for incoming messages (in hex, without 0x) after renegotiation.\n" \
" default: same as 'cid_val' parameter\n"
#else /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
#define USAGE_CID ""
#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
#if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)
#define USAGE_PSK_RAW \
" psk=%%s default: \"\" (in hex, without 0x)\n" \
" psk_list=%%s default: \"\"\n" \
" A list of (PSK identity, PSK value) pairs.\n" \
" The PSK values are in hex, without 0x.\n" \
" id1,psk1[,id2,psk2[,...]]\n" \
" psk_identity=%%s default: \"Client_identity\"\n"
#if defined(MBEDTLS_USE_PSA_CRYPTO)
#define USAGE_PSK_SLOT \
" psk_opaque=%%d default: 0 (don't use opaque static PSK)\n" \
" Enable this to store the PSK configured through command line\n" \
" parameter `psk` in a PSA-based key slot.\n" \
" Note: Currently only supported in conjunction with\n" \
" the use of min_version to force TLS 1.2 and force_ciphersuite \n" \
" to force a particular PSK-only ciphersuite.\n" \
" Note: This is to test integration of PSA-based opaque PSKs with\n" \
" Mbed TLS only. Production systems are likely to configure Mbed TLS\n" \
" with prepopulated key slots instead of importing raw key material.\n" \
" psk_list_opaque=%%d default: 0 (don't use opaque dynamic PSKs)\n" \
" Enable this to store the list of dynamically chosen PSKs configured\n" \
" through the command line parameter `psk_list` in PSA-based key slots.\n" \
" Note: Currently only supported in conjunction with\n" \
" the use of min_version to force TLS 1.2 and force_ciphersuite \n" \
" to force a particular PSK-only ciphersuite.\n" \
" Note: This is to test integration of PSA-based opaque PSKs with\n" \
" Mbed TLS only. Production systems are likely to configure Mbed TLS\n" \
" with prepopulated key slots instead of importing raw key material.\n"
#else
#define USAGE_PSK_SLOT ""
#endif /* MBEDTLS_USE_PSA_CRYPTO */
#define USAGE_PSK USAGE_PSK_RAW USAGE_PSK_SLOT
#else
#define USAGE_PSK ""
#endif /* MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED */
#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
#define USAGE_CA_CALLBACK \
" ca_callback=%%d default: 0 (disabled)\n" \
" Enable this to use the trusted certificate callback function\n"
#else
#define USAGE_CA_CALLBACK ""
#endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */
#if defined(MBEDTLS_SSL_SESSION_TICKETS)
#define USAGE_TICKETS \
" tickets=%%d default: 1 (enabled)\n" \
" ticket_timeout=%%d default: 86400 (one day)\n"
#else
#define USAGE_TICKETS ""
#endif /* MBEDTLS_SSL_SESSION_TICKETS */
#if defined(MBEDTLS_SSL_EXPORT_KEYS)
#define USAGE_EAP_TLS \
" eap_tls=%%d default: 0 (disabled)\n"
#else
#define USAGE_EAP_TLS ""
#endif /* MBEDTLS_SSL_EXPORT_KEYS */
#if defined(MBEDTLS_SSL_CACHE_C)
#define USAGE_CACHE \
" cache_max=%%d default: cache default (50)\n" \
" cache_timeout=%%d default: cache default (1d)\n"
#else
#define USAGE_CACHE ""
#endif /* MBEDTLS_SSL_CACHE_C */
#if defined(SNI_OPTION)
#if defined(MBEDTLS_X509_CRL_PARSE_C)
#define SNI_CRL ",crl"
#else
#define SNI_CRL ""
#endif
#define USAGE_SNI \
" sni=%%s name1,cert1,key1,ca1"SNI_CRL",auth1[,...]\n" \
" default: disabled\n"
#else
#define USAGE_SNI ""
#endif /* SNI_OPTION */
#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
#define USAGE_MAX_FRAG_LEN \
" max_frag_len=%%d default: 16384 (tls default)\n" \
" options: 512, 1024, 2048, 4096\n"
#else
#define USAGE_MAX_FRAG_LEN ""
#endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */
#if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
#define USAGE_TRUNC_HMAC \
" trunc_hmac=%%d default: library default\n"
#else
#define USAGE_TRUNC_HMAC ""
#endif
#if defined(MBEDTLS_SSL_ALPN)
#define USAGE_ALPN \
" alpn=%%s default: \"\" (disabled)\n" \
" example: spdy/1,http/1.1\n"
#else
#define USAGE_ALPN ""
#endif /* MBEDTLS_SSL_ALPN */
#if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY)
#define USAGE_COOKIES \
" cookies=0/1/-1 default: 1 (enabled)\n" \
" 0: disabled, -1: library default (broken)\n"
#else
#define USAGE_COOKIES ""
#endif
#if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY)
#define USAGE_ANTI_REPLAY \
" anti_replay=0/1 default: (library default: enabled)\n"
#else
#define USAGE_ANTI_REPLAY ""
#endif
#if defined(MBEDTLS_SSL_DTLS_BADMAC_LIMIT)
#define USAGE_BADMAC_LIMIT \
" badmac_limit=%%d default: (library default: disabled)\n"
#else
#define USAGE_BADMAC_LIMIT ""
#endif
#if defined(MBEDTLS_SSL_PROTO_DTLS)
#define USAGE_DTLS \
" dtls=%%d default: 0 (TLS)\n" \
" hs_timeout=%%d-%%d default: (library default: 1000-60000)\n" \
" range of DTLS handshake timeouts in millisecs\n" \
" mtu=%%d default: (library default: unlimited)\n" \
" dgram_packing=%%d default: 1 (allowed)\n" \
" allow or forbid packing of multiple\n" \
" records within a single datgram.\n"
#else
#define USAGE_DTLS ""
#endif
#if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
#define USAGE_EMS \
" extended_ms=0/1 default: (library default: on)\n"
#else
#define USAGE_EMS ""
#endif
#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
#define USAGE_ETM \
" etm=0/1 default: (library default: on)\n"
#else
#define USAGE_ETM ""
#endif
#define USAGE_REPRODUCIBLE \
" reproducible=0/1 default: 0 (disabled)\n"
#if defined(MBEDTLS_SSL_RENEGOTIATION)
#define USAGE_RENEGO \
" renegotiation=%%d default: 0 (disabled)\n" \
" renegotiate=%%d default: 0 (disabled)\n" \
" renego_delay=%%d default: -2 (library default)\n" \
" renego_period=%%d default: (2^64 - 1 for TLS, 2^48 - 1 for DTLS)\n"
#else
#define USAGE_RENEGO ""
#endif
#if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
#define USAGE_ECJPAKE \
" ecjpake_pw=%%s default: none (disabled)\n"
#else
#define USAGE_ECJPAKE ""
#endif
#if defined(MBEDTLS_ECP_C)
#define USAGE_CURVES \
" curves=a,b,c,d default: \"default\" (library default)\n" \
" example: \"secp521r1,brainpoolP512r1\"\n" \
" - use \"none\" for empty list\n" \
" - see mbedtls_ecp_curve_list()\n" \
" for acceptable curve names\n"
#else
#define USAGE_CURVES ""
#endif
#define USAGE \
"\n usage: ssl_server2 param=<>...\n" \
"\n acceptable parameters:\n" \
" server_addr=%%s default: (all interfaces)\n" \
" server_port=%%d default: 4433\n" \
" debug_level=%%d default: 0 (disabled)\n" \
" buffer_size=%%d default: 200 \n" \
" (minimum: 1, max: 16385)\n" \
" response_size=%%d default: about 152 (basic response)\n" \
" (minimum: 0, max: 16384)\n" \
" increases buffer_size if bigger\n"\
" nbio=%%d default: 0 (blocking I/O)\n" \
" options: 1 (non-blocking), 2 (added delays)\n" \
" event=%%d default: 0 (loop)\n" \
" options: 1 (level-triggered, implies nbio=1),\n" \
" read_timeout=%%d default: 0 ms (no timeout)\n" \
"\n" \
USAGE_DTLS \
USAGE_COOKIES \
USAGE_ANTI_REPLAY \
USAGE_BADMAC_LIMIT \
"\n" \
" auth_mode=%%s default: (library default: none)\n" \
" options: none, optional, required\n" \
" cert_req_ca_list=%%d default: 1 (send ca list)\n" \
" options: 1 (send ca list), 0 (don't send)\n" \
USAGE_IO \
USAGE_SSL_ASYNC \
USAGE_SNI \
"\n" \
USAGE_PSK \
USAGE_CA_CALLBACK \
USAGE_ECJPAKE \
"\n" \
" allow_legacy=%%d default: (library default: no)\n" \
USAGE_RENEGO \
" exchanges=%%d default: 1\n" \
"\n" \
USAGE_TICKETS \
USAGE_EAP_TLS \
USAGE_REPRODUCIBLE \
USAGE_CACHE \
USAGE_MAX_FRAG_LEN \
USAGE_TRUNC_HMAC \
USAGE_ALPN \
USAGE_EMS \
USAGE_ETM \
USAGE_CURVES \
"\n" \
" arc4=%%d default: (library default: 0)\n" \
" allow_sha1=%%d default: 0\n" \
" min_version=%%s default: (library default: tls1)\n" \
" max_version=%%s default: (library default: tls1_2)\n" \
" force_version=%%s default: \"\" (none)\n" \
" options: ssl3, tls1, tls1_1, tls1_2, dtls1, dtls1_2\n" \
"\n" \
" version_suites=a,b,c,d per-version ciphersuites\n" \
" in order from ssl3 to tls1_2\n" \
" default: all enabled\n" \
" force_ciphersuite=<name> default: all enabled\n" \
" query_config=<name> return 0 if the specified\n" \
" configuration macro is defined and 1\n" \
" otherwise. The expansion of the macro\n" \
" is printed if it is defined\n" \
" acceptable ciphersuite names:\n"
#define ALPN_LIST_SIZE 10
#define CURVE_LIST_SIZE 20
#define PUT_UINT64_BE(out_be,in_le,i) \
{ \
(out_be)[(i) + 0] = (unsigned char)( ( (in_le) >> 56 ) & 0xFF ); \
(out_be)[(i) + 1] = (unsigned char)( ( (in_le) >> 48 ) & 0xFF ); \
(out_be)[(i) + 2] = (unsigned char)( ( (in_le) >> 40 ) & 0xFF ); \
(out_be)[(i) + 3] = (unsigned char)( ( (in_le) >> 32 ) & 0xFF ); \
(out_be)[(i) + 4] = (unsigned char)( ( (in_le) >> 24 ) & 0xFF ); \
(out_be)[(i) + 5] = (unsigned char)( ( (in_le) >> 16 ) & 0xFF ); \
(out_be)[(i) + 6] = (unsigned char)( ( (in_le) >> 8 ) & 0xFF ); \
(out_be)[(i) + 7] = (unsigned char)( ( (in_le) >> 0 ) & 0xFF ); \
}
/*
* global options
*/
struct options
{
const char *server_addr; /* address on which the ssl service runs */
const char *server_port; /* port on which the ssl service runs */
int debug_level; /* level of debugging */
int nbio; /* should I/O be blocking? */
int event; /* loop or event-driven IO? level or edge triggered? */
uint32_t read_timeout; /* timeout on mbedtls_ssl_read() in milliseconds */
int response_size; /* pad response with header to requested size */
uint16_t buffer_size; /* IO buffer size */
const char *ca_file; /* the file with the CA certificate(s) */
const char *ca_path; /* the path with the CA certificate(s) reside */
const char *crt_file; /* the file with the server certificate */
const char *key_file; /* the file with the server key */
const char *crt_file2; /* the file with the 2nd server certificate */
const char *key_file2; /* the file with the 2nd server key */
const char *async_operations; /* supported SSL asynchronous operations */
int async_private_delay1; /* number of times f_async_resume needs to be called for key 1, or -1 for no async */
int async_private_delay2; /* number of times f_async_resume needs to be called for key 2, or -1 for no async */
int async_private_error; /* inject error in async private callback */
#if defined(MBEDTLS_USE_PSA_CRYPTO)
int psk_opaque;
int psk_list_opaque;
#endif
#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
int ca_callback; /* Use callback for trusted certificate list */
#endif
const char *psk; /* the pre-shared key */
const char *psk_identity; /* the pre-shared key identity */
char *psk_list; /* list of PSK id/key pairs for callback */
const char *ecjpake_pw; /* the EC J-PAKE password */
int force_ciphersuite[2]; /* protocol/ciphersuite to use, or all */
const char *version_suites; /* per-version ciphersuites */
int renegotiation; /* enable / disable renegotiation */
int allow_legacy; /* allow legacy renegotiation */
int renegotiate; /* attempt renegotiation? */
int renego_delay; /* delay before enforcing renegotiation */
uint64_t renego_period; /* period for automatic renegotiation */
int exchanges; /* number of data exchanges */
int min_version; /* minimum protocol version accepted */
int max_version; /* maximum protocol version accepted */
int arc4; /* flag for arc4 suites support */
int allow_sha1; /* flag for SHA-1 support */
int auth_mode; /* verify mode for connection */
int cert_req_ca_list; /* should we send the CA list? */
unsigned char mfl_code; /* code for maximum fragment length */
int trunc_hmac; /* accept truncated hmac? */
int tickets; /* enable / disable session tickets */
int ticket_timeout; /* session ticket lifetime */
int cache_max; /* max number of session cache entries */
int cache_timeout; /* expiration delay of session cache entries */
char *sni; /* string describing sni information */
const char *curves; /* list of supported elliptic curves */
const char *alpn_string; /* ALPN supported protocols */
const char *dhm_file; /* the file with the DH parameters */
int extended_ms; /* allow negotiation of extended MS? */
int etm; /* allow negotiation of encrypt-then-MAC? */
int transport; /* TLS or DTLS? */
int cookies; /* Use cookies for DTLS? -1 to break them */
int anti_replay; /* Use anti-replay for DTLS? -1 for default */
uint32_t hs_to_min; /* Initial value of DTLS handshake timer */
uint32_t hs_to_max; /* Max value of DTLS handshake timer */
int dtls_mtu; /* UDP Maximum tranport unit for DTLS */
int dgram_packing; /* allow/forbid datagram packing */
int badmac_limit; /* Limit of records with bad MAC */
int eap_tls; /* derive EAP-TLS keying material? */
int cid_enabled; /* whether to use the CID extension or not */
int cid_enabled_renego; /* whether to use the CID extension or not
* during renegotiation */
const char *cid_val; /* the CID to use for incoming messages */
const char *cid_val_renego; /* the CID to use for incoming messages
* after renegotiation */
int reproducible; /* make communication reproducible */
} opt;
int query_config( const char *config );
#if defined(MBEDTLS_SSL_EXPORT_KEYS)
typedef struct eap_tls_keys
{
unsigned char master_secret[48];
unsigned char randbytes[64];
mbedtls_tls_prf_types tls_prf_type;
} eap_tls_keys;
static int eap_tls_key_derivation ( void *p_expkey,
const unsigned char *ms,
const unsigned char *kb,
size_t maclen,
size_t keylen,
size_t ivlen,
unsigned char client_random[32],
unsigned char server_random[32],
mbedtls_tls_prf_types tls_prf_type )
{
eap_tls_keys *keys = (eap_tls_keys *)p_expkey;
( ( void ) kb );
memcpy( keys->master_secret, ms, sizeof( keys->master_secret ) );
memcpy( keys->randbytes, client_random, 32 );
memcpy( keys->randbytes + 32, server_random, 32 );
keys->tls_prf_type = tls_prf_type;
if( opt.debug_level > 2 )
{
mbedtls_printf("exported maclen is %u\n", (unsigned)maclen);
mbedtls_printf("exported keylen is %u\n", (unsigned)keylen);
mbedtls_printf("exported ivlen is %u\n", (unsigned)ivlen);
}
return( 0 );
}
#endif
static void my_debug( void *ctx, int level,
const char *file, int line,
const char *str )
{
const char *p, *basename;
/* Extract basename from file */
for( p = basename = file; *p != '\0'; p++ )
if( *p == '/' || *p == '\\' )
basename = p + 1;
mbedtls_fprintf( (FILE *) ctx, "%s:%04d: |%d| %s", basename, line, level, str );
fflush( (FILE *) ctx );
}
mbedtls_time_t dummy_constant_time( mbedtls_time_t* time )
{
(void) time;
return 0x5af2a056;
}
int dummy_entropy( void *data, unsigned char *output, size_t len )
{
size_t i;
int ret;
(void) data;
ret = mbedtls_entropy_func( data, output, len );
for (i = 0; i < len; i++ ) {
//replace result with pseudo random
output[i] = (unsigned char) rand();
}
return( ret );
}
#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
int ca_callback( void *data, mbedtls_x509_crt const *child,
mbedtls_x509_crt **candidates)
{
int ret = 0;
mbedtls_x509_crt *ca = (mbedtls_x509_crt *) data;
mbedtls_x509_crt *first;
/* This is a test-only implementation of the CA callback
* which always returns the entire list of trusted certificates.
* Production implementations managing a large number of CAs
* should use an efficient presentation and lookup for the
* set of trusted certificates (such as a hashtable) and only
* return those trusted certificates which satisfy basic
* parental checks, such as the matching of child `Issuer`
* and parent `Subject` field. */
((void) child);
first = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) );
if( first == NULL )
{
ret = -1;
goto exit;
}
mbedtls_x509_crt_init( first );
if( mbedtls_x509_crt_parse_der( first, ca->raw.p, ca->raw.len ) != 0 )
{
ret = -1;
goto exit;
}
while( ca->next != NULL )
{
ca = ca->next;
if( mbedtls_x509_crt_parse_der( first, ca->raw.p, ca->raw.len ) != 0 )
{
ret = -1;
goto exit;
}
}
exit:
if( ret != 0 )
{
mbedtls_x509_crt_free( first );
mbedtls_free( first );
first = NULL;
}
*candidates = first;
return( ret );
}
#endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */
/*
* Test recv/send functions that make sure each try returns
* WANT_READ/WANT_WRITE at least once before sucesseding
*/
static int my_recv( void *ctx, unsigned char *buf, size_t len )
{
static int first_try = 1;
int ret;
if( first_try )
{
first_try = 0;
return( MBEDTLS_ERR_SSL_WANT_READ );
}
ret = mbedtls_net_recv( ctx, buf, len );
if( ret != MBEDTLS_ERR_SSL_WANT_READ )
first_try = 1; /* Next call will be a new operation */
return( ret );
}
static int my_send( void *ctx, const unsigned char *buf, size_t len )
{
static int first_try = 1;
int ret;
if( first_try )
{
first_try = 0;
return( MBEDTLS_ERR_SSL_WANT_WRITE );
}
ret = mbedtls_net_send( ctx, buf, len );
if( ret != MBEDTLS_ERR_SSL_WANT_WRITE )
first_try = 1; /* Next call will be a new operation */
return( ret );
}
/*
* Return authmode from string, or -1 on error
*/
static int get_auth_mode( const char *s )
{
if( strcmp( s, "none" ) == 0 )
return( MBEDTLS_SSL_VERIFY_NONE );
if( strcmp( s, "optional" ) == 0 )
return( MBEDTLS_SSL_VERIFY_OPTIONAL );
if( strcmp( s, "required" ) == 0 )
return( MBEDTLS_SSL_VERIFY_REQUIRED );
return( -1 );
}
/*
* Used by sni_parse and psk_parse to handle coma-separated lists
*/
#define GET_ITEM( dst ) \
do \
{ \
(dst) = p; \
while( *p != ',' ) \
if( ++p > end ) \
goto error; \
*p++ = '\0'; \
} while( 0 )
#if defined(SNI_OPTION)
typedef struct _sni_entry sni_entry;
struct _sni_entry {
const char *name;
mbedtls_x509_crt *cert;
mbedtls_pk_context *key;
mbedtls_x509_crt* ca;
mbedtls_x509_crl* crl;
int authmode;
sni_entry *next;
};
void sni_free( sni_entry *head )
{
sni_entry *cur = head, *next;
while( cur != NULL )
{
mbedtls_x509_crt_free( cur->cert );
mbedtls_free( cur->cert );
mbedtls_pk_free( cur->key );
mbedtls_free( cur->key );
mbedtls_x509_crt_free( cur->ca );
mbedtls_free( cur->ca );
#if defined(MBEDTLS_X509_CRL_PARSE_C)
mbedtls_x509_crl_free( cur->crl );
mbedtls_free( cur->crl );
#endif
next = cur->next;
mbedtls_free( cur );
cur = next;
}
}
/*
* Parse a string of sextuples name1,crt1,key1,ca1,crl1,auth1[,...]
* into a usable sni_entry list. For ca1, crl1, auth1, the special value
* '-' means unset. If ca1 is unset, then crl1 is ignored too.
*
* Modifies the input string! This is not production quality!
*/
sni_entry *sni_parse( char *sni_string )
{
sni_entry *cur = NULL, *new = NULL;
char *p = sni_string;
char *end = p;
char *crt_file, *key_file, *ca_file, *auth_str;
#if defined(MBEDTLS_X509_CRL_PARSE_C)
char *crl_file;
#endif
while( *end != '\0' )
++end;
*end = ',';
while( p <= end )
{
if( ( new = mbedtls_calloc( 1, sizeof( sni_entry ) ) ) == NULL )
{
sni_free( cur );
return( NULL );
}
GET_ITEM( new->name );
GET_ITEM( crt_file );
GET_ITEM( key_file );
GET_ITEM( ca_file );
#if defined(MBEDTLS_X509_CRL_PARSE_C)
GET_ITEM( crl_file );
#endif
GET_ITEM( auth_str );
if( ( new->cert = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) ) ) == NULL ||
( new->key = mbedtls_calloc( 1, sizeof( mbedtls_pk_context ) ) ) == NULL )
goto error;
mbedtls_x509_crt_init( new->cert );
mbedtls_pk_init( new->key );
if( mbedtls_x509_crt_parse_file( new->cert, crt_file ) != 0 ||
mbedtls_pk_parse_keyfile( new->key, key_file, "" ) != 0 )
goto error;
if( strcmp( ca_file, "-" ) != 0 )
{
if( ( new->ca = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) ) ) == NULL )
goto error;
mbedtls_x509_crt_init( new->ca );
if( mbedtls_x509_crt_parse_file( new->ca, ca_file ) != 0 )
goto error;
}
#if defined(MBEDTLS_X509_CRL_PARSE_C)
if( strcmp( crl_file, "-" ) != 0 )
{
if( ( new->crl = mbedtls_calloc( 1, sizeof( mbedtls_x509_crl ) ) ) == NULL )
goto error;
mbedtls_x509_crl_init( new->crl );
if( mbedtls_x509_crl_parse_file( new->crl, crl_file ) != 0 )
goto error;
}
#endif
if( strcmp( auth_str, "-" ) != 0 )
{
if( ( new->authmode = get_auth_mode( auth_str ) ) < 0 )
goto error;
}
else
new->authmode = DFL_AUTH_MODE;
new->next = cur;
cur = new;
}
return( cur );
error:
sni_free( new );
sni_free( cur );
return( NULL );
}
/*
* SNI callback.
*/
int sni_callback( void *p_info, mbedtls_ssl_context *ssl,
const unsigned char *name, size_t name_len )
{
const sni_entry *cur = (const sni_entry *) p_info;
while( cur != NULL )
{
if( name_len == strlen( cur->name ) &&
memcmp( name, cur->name, name_len ) == 0 )
{
if( cur->ca != NULL )
mbedtls_ssl_set_hs_ca_chain( ssl, cur->ca, cur->crl );
if( cur->authmode != DFL_AUTH_MODE )
mbedtls_ssl_set_hs_authmode( ssl, cur->authmode );
return( mbedtls_ssl_set_hs_own_cert( ssl, cur->cert, cur->key ) );
}
cur = cur->next;
}
return( -1 );
}
#endif /* SNI_OPTION */
#if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED) || \
defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
#define HEX2NUM( c ) \
do \
{ \
if( (c) >= '0' && (c) <= '9' ) \
(c) -= '0'; \
else if( (c) >= 'a' && (c) <= 'f' ) \
(c) -= 'a' - 10; \
else if( (c) >= 'A' && (c) <= 'F' ) \
(c) -= 'A' - 10; \
else \
return( -1 ); \
} while( 0 )
/*
* Convert a hex string to bytes.
* Return 0 on success, -1 on error.
*/
int unhexify( unsigned char *output, const char *input, size_t *olen )
{
unsigned char c;
size_t j;
*olen = strlen( input );
if( *olen % 2 != 0 || *olen / 2 > MBEDTLS_PSK_MAX_LEN )
return( -1 );
*olen /= 2;
for( j = 0; j < *olen * 2; j += 2 )
{
c = input[j];
HEX2NUM( c );
output[ j / 2 ] = c << 4;
c = input[j + 1];
HEX2NUM( c );
output[ j / 2 ] |= c;
}
return( 0 );
}
#endif
#if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)