/* * 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 #include #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 #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" #include #include #include #include #if !defined(_MSC_VER) #include #endif #if !defined(_WIN32) #include #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 #endif #define DFL_SERVER_ADDR NULL #define DFL_SERVER_PORT "4433" #define DFL_DEBUG_LEVEL 0 #define DFL_NBIO 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_PSK "" #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_AUTH_MODE -1 #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_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_BADMAC_LIMIT -1 #define DFL_EXTENDED_MS -1 #define DFL_ETM -1 #define LONG_RESPONSE "

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

\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" \ "

mbed TLS Test Server

\r\n" \ "

Successful connection using: %s

\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 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" \ " ca_path=%%s The path containing the top-level CA(s) you fully trust\n" \ " default: \"\" (pre-loaded) (overrides ca_file)\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_KEY_EXCHANGE__SOME__PSK_ENABLED) #define USAGE_PSK \ " psk=%%s default: \"\" (in hex, without 0x)\n" \ " psk_identity=%%s default: \"Client_identity\"\n" #else #define USAGE_PSK "" #endif /* MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED */ #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_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) #define USAGE_SNI \ " sni=%%s name1,cert1,key1,ca1,crl1,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" #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 #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 #define USAGE \ "\n usage: ssl_server2 param=<>...\n" \ "\n acceptable parameters:\n" \ " server_addr=%%d default: (all interfaces)\n" \ " server_port=%%d default: 4433\n" \ " debug_level=%%d default: 0 (disabled)\n" \ " nbio=%%d default: 0 (blocking I/O)\n" \ " options: 1 (non-blocking), 2 (added delays)\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" \ USAGE_IO \ USAGE_SNI \ "\n" \ USAGE_PSK \ USAGE_ECJPAKE \ "\n" \ " allow_legacy=%%d default: (library default: no)\n" \ USAGE_RENEGO \ " exchanges=%%d default: 1\n" \ "\n" \ USAGE_TICKETS \ USAGE_CACHE \ USAGE_MAX_FRAG_LEN \ USAGE_TRUNC_HMAC \ USAGE_ALPN \ USAGE_EMS \ USAGE_ETM \ "\n" \ " arc4=%%d default: (library 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= default: all enabled\n" \ " acceptable ciphersuite names:\n" #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? */ uint32_t read_timeout; /* timeout on mbedtls_ssl_read() in milliseconds */ 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 *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 auth_mode; /* verify mode for connection */ 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 *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 badmac_limit; /* Limit of records with bad MAC */ } opt; 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 ); } /* * 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 ) \ dst = p; \ while( *p != ',' ) \ if( ++p > end ) \ goto error; \ *p++ = '\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 ); mbedtls_x509_crl_free( cur->crl ); mbedtls_free( cur->crl ); 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, *crl_file, *auth_str; 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 ); GET_ITEM( crl_file ); 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( 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; } 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) #define HEX2NUM( c ) \ 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 ); /* * 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 ); } typedef struct _psk_entry psk_entry; struct _psk_entry { const char *name; size_t key_len; unsigned char key[MBEDTLS_PSK_MAX_LEN]; psk_entry *next; }; /* * Free a list of psk_entry's */ void psk_free( psk_entry *head ) { psk_entry *next; while( head != NULL ) { next = head->next; mbedtls_free( head ); head = next; } } /* * Parse a string of pairs name1,key1[,name2,key2[,...]] * into a usable psk_entry list. * * Modifies the input string! This is not production quality! */ psk_entry *psk_parse( char *psk_string ) { psk_entry *cur = NULL, *new = NULL; char *p = psk_string; char *end = p; char *key_hex; while( *end != '\0' ) ++end; *end = ','; while( p <= end ) { if( ( new = mbedtls_calloc( 1, sizeof( psk_entry ) ) ) == NULL ) goto error; memset( new, 0, sizeof( psk_entry ) ); GET_ITEM( new->name ); GET_ITEM( key_hex ); if( unhexify( new->key, key_hex, &new->key_len ) != 0 ) goto error; new->next = cur; cur = new; } return( cur ); error: psk_free( new ); psk_free( cur ); return( 0 ); } /* * PSK callback */ int psk_callback( void *p_info, mbedtls_ssl_context *ssl, const unsigned char *name, size_t name_len ) { psk_entry *cur = (psk_entry *) p_info; while( cur != NULL ) { if( name_len == strlen( cur->name ) && memcmp( name, cur->name, name_len ) == 0 ) { return( mbedtls_ssl_set_hs_psk( ssl, cur->key, cur->key_len ) ); } cur = cur->next; } return( -1 ); } #endif /* MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED */ static mbedtls_net_context listen_fd, client_fd; /* Interruption handler to ensure clean exit (for valgrind testing) */ #if !defined(_WIN32) static int received_sigterm = 0; void term_handler( int sig ) { ((void) sig); received_sigterm = 1; mbedtls_net_free( &listen_fd ); /* causes mbedtls_net_accept() to abort */ mbedtls_net_free( &client_fd ); /* causes net_read() to abort */ } #endif int main( int argc, char *argv[] ) { int ret = 0, len, written, frags, exchanges_left; int version_suites[4][2]; unsigned char buf[IO_BUF_LEN]; #if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED) unsigned char psk[MBEDTLS_PSK_MAX_LEN]; size_t psk_len = 0; psk_entry *psk_info = NULL; #endif const char *pers = "ssl_server2"; unsigned char client_ip[16] = { 0 }; size_t cliip_len; #if defined(MBEDTLS_SSL_COOKIE_C) mbedtls_ssl_cookie_ctx cookie_ctx; #endif mbedtls_entropy_context entropy; mbedtls_ctr_drbg_context ctr_drbg; mbedtls_ssl_context ssl; mbedtls_ssl_config conf; #if defined(MBEDTLS_TIMING_C) mbedtls_timing_delay_context timer; #endif #if defined(MBEDTLS_SSL_RENEGOTIATION) unsigned char renego_period[8] = { 0 }; #endif #if defined(MBEDTLS_X509_CRT_PARSE_C) uint32_t flags; mbedtls_x509_crt cacert; mbedtls_x509_crt srvcert; mbedtls_pk_context pkey; mbedtls_x509_crt srvcert2; mbedtls_pk_context pkey2; int key_cert_init = 0, key_cert_init2 = 0; #endif #if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_FS_IO) mbedtls_dhm_context dhm; #endif #if defined(MBEDTLS_SSL_CACHE_C) mbedtls_ssl_cache_context cache; #endif #if defined(MBEDTLS_SSL_SESSION_TICKETS) mbedtls_ssl_ticket_context ticket_ctx; #endif #if defined(SNI_OPTION) sni_entry *sni_info = NULL; #endif #if defined(MBEDTLS_SSL_ALPN) const char *alpn_list[10]; #endif #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) unsigned char alloc_buf[100000]; #endif int i; char *p, *q; const int *list; #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) mbedtls_memory_buffer_alloc_init( alloc_buf, sizeof(alloc_buf) ); #endif /* * Make sure memory references are valid in case we exit early. */ mbedtls_net_init( &client_fd ); mbedtls_net_init( &listen_fd ); mbedtls_ssl_init( &ssl ); mbedtls_ssl_config_init( &conf ); mbedtls_ctr_drbg_init( &ctr_drbg ); #if defined(MBEDTLS_X509_CRT_PARSE_C) mbedtls_x509_crt_init( &cacert ); mbedtls_x509_crt_init( &srvcert ); mbedtls_pk_init( &pkey ); mbedtls_x509_crt_init( &srvcert2 ); mbedtls_pk_init( &pkey2 ); #endif #if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_FS_IO) mbedtls_dhm_init( &dhm ); #endif #if defined(MBEDTLS_SSL_CACHE_C) mbedtls_ssl_cache_init( &cache ); #endif #if defined(MBEDTLS_SSL_SESSION_TICKETS) mbedtls_ssl_ticket_init( &ticket_ctx ); #endif #if defined(MBEDTLS_SSL_ALPN) memset( (void *) alpn_list, 0, sizeof( alpn_list ) ); #endif #if defined(MBEDTLS_SSL_COOKIE_C) mbedtls_ssl_cookie_init( &cookie_ctx ); #endif #if !defined(_WIN32) /* Abort cleanly on SIGTERM and SIGINT */ signal( SIGTERM, term_handler ); signal( SIGINT, term_handler ); #endif if( argc == 0 ) { usage: if( ret == 0 ) ret = 1; mbedtls_printf( USAGE ); list = mbedtls_ssl_list_ciphersuites(); while( *list ) { mbedtls_printf(" %-42s", mbedtls_ssl_get_ciphersuite_name( *list ) ); list++; if( !*list ) break; mbedtls_printf(" %s\n", mbedtls_ssl_get_ciphersuite_name( *list ) ); list++; } mbedtls_printf("\n"); goto exit; } opt.server_addr = DFL_SERVER_ADDR; opt.server_port = DFL_SERVER_PORT; opt.debug_level = DFL_DEBUG_LEVEL; opt.nbio = DFL_NBIO; opt.read_timeout = DFL_READ_TIMEOUT; opt.ca_file = DFL_CA_FILE; opt.ca_path = DFL_CA_PATH; opt.crt_file = DFL_CRT_FILE; opt.key_file = DFL_KEY_FILE; opt.crt_file2 = DFL_CRT_FILE2; opt.key_file2 = DFL_KEY_FILE2; opt.psk = DFL_PSK; opt.psk_identity = DFL_PSK_IDENTITY; opt.psk_list = DFL_PSK_LIST; opt.ecjpake_pw = DFL_ECJPAKE_PW; opt.force_ciphersuite[0]= DFL_FORCE_CIPHER; opt.version_suites = DFL_VERSION_SUITES; opt.renegotiation = DFL_RENEGOTIATION; opt.allow_legacy = DFL_ALLOW_LEGACY; opt.renegotiate = DFL_RENEGOTIATE; opt.renego_delay = DFL_RENEGO_DELAY; opt.renego_period = DFL_RENEGO_PERIOD; opt.exchanges = DFL_EXCHANGES; opt.min_version = DFL_MIN_VERSION; opt.max_version = DFL_MAX_VERSION; opt.arc4 = DFL_ARC4; opt.auth_mode = DFL_AUTH_MODE; opt.mfl_code = DFL_MFL_CODE; opt.trunc_hmac = DFL_TRUNC_HMAC; opt.tickets = DFL_TICKETS; opt.ticket_timeout = DFL_TICKET_TIMEOUT; opt.cache_max = DFL_CACHE_MAX; opt.cache_timeout = DFL_CACHE_TIMEOUT; opt.sni = DFL_SNI; opt.alpn_string = DFL_ALPN_STRING; opt.dhm_file = DFL_DHM_FILE; opt.transport = DFL_TRANSPORT; opt.cookies = DFL_COOKIES; opt.anti_replay = DFL_ANTI_REPLAY; opt.hs_to_min = DFL_HS_TO_MIN; opt.hs_to_max = DFL_HS_TO_MAX; opt.badmac_limit = DFL_BADMAC_LIMIT; opt.extended_ms = DFL_EXTENDED_MS; opt.etm = DFL_ETM; for( i = 1; i < argc; i++ ) { p = argv[i]; if( ( q = strchr( p, '=' ) ) == NULL ) goto usage; *q++ = '\0'; if( strcmp( p, "server_port" ) == 0 ) opt.server_port = q; else if( strcmp( p, "server_addr" ) == 0 ) opt.server_addr = q; else if( strcmp( p, "dtls" ) == 0 ) { int t = atoi( q ); if( t == 0 ) opt.transport = MBEDTLS_SSL_TRANSPORT_STREAM; else if( t == 1 ) opt.transport = MBEDTLS_SSL_TRANSPORT_DATAGRAM; else goto usage; } else if( strcmp( p, "debug_level" ) == 0 ) { opt.debug_level = atoi( q ); if( opt.debug_level < 0 || opt.debug_level > 65535 ) goto usage; } else if( strcmp( p, "nbio" ) == 0 ) { opt.nbio = atoi( q ); if( opt.nbio < 0 || opt.nbio > 2 ) goto usage; } else if( strcmp( p, "read_timeout" ) == 0 ) opt.read_timeout = atoi( q ); else if( strcmp( p, "ca_file" ) == 0 ) opt.ca_file = q; else if( strcmp( p, "ca_path" ) == 0 ) opt.ca_path = q; else if( strcmp( p, "crt_file" ) == 0 ) opt.crt_file = q; else if( strcmp( p, "key_file" ) == 0 ) opt.key_file = q; else if( strcmp( p, "crt_file2" ) == 0 ) opt.crt_file2 = q; else if( strcmp( p, "key_file2" ) == 0 ) opt.key_file2 = q; else if( strcmp( p, "dhm_file" ) == 0 ) opt.dhm_file = q; else if( strcmp( p, "psk" ) == 0 ) opt.psk = q; else if( strcmp( p, "psk_identity" ) == 0 ) opt.psk_identity = q; else if( strcmp( p, "psk_list" ) == 0 ) opt.psk_list = q; else if( strcmp( p, "ecjpake_pw" ) == 0 ) opt.ecjpake_pw = q; else if( strcmp( p, "force_ciphersuite" ) == 0 ) { opt.force_ciphersuite[0] = mbedtls_ssl_get_ciphersuite_id( q ); if( opt.force_ciphersuite[0] == 0 ) { ret = 2; goto usage; } opt.force_ciphersuite[1] = 0; } else if( strcmp( p, "version_suites" ) == 0 ) opt.version_suites = q; else if( strcmp( p, "renegotiation" ) == 0 ) { opt.renegotiation = (atoi( q )) ? MBEDTLS_SSL_RENEGOTIATION_ENABLED : MBEDTLS_SSL_RENEGOTIATION_DISABLED; } else if( strcmp( p, "allow_legacy" ) == 0 ) { switch( atoi( q ) ) { case -1: opt.allow_legacy = MBEDTLS_SSL_LEGACY_BREAK_HANDSHAKE; break; case 0: opt.allow_legacy = MBEDTLS_SSL_LEGACY_NO_RENEGOTIATION; break; case 1: opt.allow_legacy = MBEDTLS_SSL_LEGACY_ALLOW_RENEGOTIATION; break; default: goto usage; } } else if( strcmp( p, "renegotiate" ) == 0 ) { opt.renegotiate = atoi( q ); if( opt.renegotiate < 0 || opt.renegotiate > 1 ) goto usage; } else if( strcmp( p, "renego_delay" ) == 0 ) { opt.renego_delay = atoi( q ); } else if( strcmp( p, "renego_period" ) == 0 ) { #if defined(_MSC_VER) opt.renego_period = _strtoui64( q, NULL, 10 ); #else if( sscanf( q, "%" SCNu64, &opt.renego_period ) != 1 ) goto usage; #endif /* _MSC_VER */ if( opt.renego_period < 2 ) goto usage; } else if( strcmp( p, "exchanges" ) == 0 ) { opt.exchanges = atoi( q ); if( opt.exchanges < 0 ) goto usage; } else if( strcmp( p, "min_version" ) == 0 ) { if( strcmp( q, "ssl3" ) == 0 ) opt.min_version = MBEDTLS_SSL_MINOR_VERSION_0; else if( strcmp( q, "tls1" ) == 0 ) opt.min_version = MBEDTLS_SSL_MINOR_VERSION_1; else if( strcmp( q, "tls1_1" ) == 0 || strcmp( q, "dtls1" ) == 0 ) opt.min_version = MBEDTLS_SSL_MINOR_VERSION_2; else if( strcmp( q, "tls1_2" ) == 0 || strcmp( q, "dtls1_2" ) == 0 ) opt.min_version = MBEDTLS_SSL_MINOR_VERSION_3; else goto usage; } else if( strcmp( p, "max_version" ) == 0 ) { if( strcmp( q, "ssl3" ) == 0 ) opt.max_version = MBEDTLS_SSL_MINOR_VERSION_0; else if( strcmp( q, "tls1" ) == 0 ) opt.max_version = MBEDTLS_SSL_MINOR_VERSION_1; else if( strcmp( q, "tls1_1" ) == 0 || strcmp( q, "dtls1" ) == 0 ) opt.max_version = MBEDTLS_SSL_MINOR_VERSION_2; else if( strcmp( q, "tls1_2" ) == 0 || strcmp( q, "dtls1_2" ) == 0 ) opt.max_version = MBEDTLS_SSL_MINOR_VERSION_3; else goto usage; } else if( strcmp( p, "arc4" ) == 0 ) { switch( atoi( q ) ) { case 0: opt.arc4 = MBEDTLS_SSL_ARC4_DISABLED; break; case 1: opt.arc4 = MBEDTLS_SSL_ARC4_ENABLED; break; default: goto usage; } } else if( strcmp( p, "force_version" ) == 0 ) { if( strcmp( q, "ssl3" ) == 0 ) { opt.min_version = MBEDTLS_SSL_MINOR_VERSION_0; opt.max_version = MBEDTLS_SSL_MINOR_VERSION_0; } else if( strcmp( q, "tls1" ) == 0 ) { opt.min_version = MBEDTLS_SSL_MINOR_VERSION_1; opt.max_version = MBEDTLS_SSL_MINOR_VERSION_1; } else if( strcmp( q, "tls1_1" ) == 0 ) { opt.min_version = MBEDTLS_SSL_MINOR_VERSION_2; opt.max_version = MBEDTLS_SSL_MINOR_VERSION_2; } else if( strcmp( q, "tls1_2" ) == 0 ) { opt.min_version = MBEDTLS_SSL_MINOR_VERSION_3; opt.max_version = MBEDTLS_SSL_MINOR_VERSION_3; } else if( strcmp( q, "dtls1" ) == 0 ) { opt.min_version = MBEDTLS_SSL_MINOR_VERSION_2; opt.max_version = MBEDTLS_SSL_MINOR_VERSION_2; opt.transport = MBEDTLS_SSL_TRANSPORT_DATAGRAM; } else if( strcmp( q, "dtls1_2" ) == 0 ) { opt.min_version = MBEDTLS_SSL_MINOR_VERSION_3; opt.max_version = MBEDTLS_SSL_MINOR_VERSION_3; opt.transport = MBEDTLS_SSL_TRANSPORT_DATAGRAM; } else goto usage; } else if( strcmp( p, "auth_mode" ) == 0 ) { if( ( opt.auth_mode = get_auth_mode( q ) ) < 0 ) goto usage; } else if( strcmp( p, "max_frag_len" ) == 0 ) { if( strcmp( q, "512" ) == 0 ) opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_512; else if( strcmp( q, "1024" ) == 0 ) opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_1024; else if( strcmp( q, "2048" ) == 0 ) opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_2048; else if( strcmp( q, "4096" ) == 0 ) opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_4096; else goto usage; } else if( strcmp( p, "alpn" ) == 0 ) { opt.alpn_string = q; } else if( strcmp( p, "trunc_hmac" ) == 0 ) { switch( atoi( q ) ) { case 0: opt.trunc_hmac = MBEDTLS_SSL_TRUNC_HMAC_DISABLED; break; case 1: opt.trunc_hmac = MBEDTLS_SSL_TRUNC_HMAC_ENABLED; break; default: goto usage; } } else if( strcmp( p, "extended_ms" ) == 0 ) { switch( atoi( q ) ) { case 0: opt.extended_ms = MBEDTLS_SSL_EXTENDED_MS_DISABLED; break; case 1: opt.extended_ms = MBEDTLS_SSL_EXTENDED_MS_ENABLED; break; default: goto usage; } } else if( strcmp( p, "etm" ) == 0 ) { switch( atoi( q ) ) { case 0: opt.etm = MBEDTLS_SSL_ETM_DISABLED; break; case 1: opt.etm = MBEDTLS_SSL_ETM_ENABLED; break; default: goto usage; } } else if( strcmp( p, "tickets" ) == 0 ) { opt.tickets = atoi( q ); if( opt.tickets < 0 || opt.tickets > 1 ) goto usage; } else if( strcmp( p, "ticket_timeout" ) == 0 ) { opt.ticket_timeout = atoi( q ); if( opt.ticket_timeout < 0 ) goto usage; } else if( strcmp( p, "cache_max" ) == 0 ) { opt.cache_max = atoi( q ); if( opt.cache_max < 0 ) goto usage; } else if( strcmp( p, "cache_timeout" ) == 0 ) { opt.cache_timeout = atoi( q ); if( opt.cache_timeout < 0 ) goto usage; } else if( strcmp( p, "cookies" ) == 0 ) { opt.cookies = atoi( q ); if( opt.cookies < -1 || opt.cookies > 1) goto usage; } else if( strcmp( p, "anti_replay" ) == 0 ) { opt.anti_replay = atoi( q ); if( opt.anti_replay < 0 || opt.anti_replay > 1) goto usage; } else if( strcmp( p, "badmac_limit" ) == 0 ) { opt.badmac_limit = atoi( q ); if( opt.badmac_limit < 0 ) goto usage; } else if( strcmp( p, "hs_timeout" ) == 0 ) { if( ( p = strchr( q, '-' ) ) == NULL ) goto usage; *p++ = '\0'; opt.hs_to_min = atoi( q ); opt.hs_to_max = atoi( p ); if( opt.hs_to_min == 0 || opt.hs_to_max < opt.hs_to_min ) goto usage; } else if( strcmp( p, "sni" ) == 0 ) { opt.sni = q; } else goto usage; } #if defined(MBEDTLS_DEBUG_C) mbedtls_debug_set_threshold( opt.debug_level ); #endif if( opt.force_ciphersuite[0] > 0 ) { const mbedtls_ssl_ciphersuite_t *ciphersuite_info; ciphersuite_info = mbedtls_ssl_ciphersuite_from_id( opt.force_ciphersuite[0] ); if( opt.max_version != -1 && ciphersuite_info->min_minor_ver > opt.max_version ) { mbedtls_printf("forced ciphersuite not allowed with this protocol version\n"); ret = 2; goto usage; } if( opt.min_version != -1 && ciphersuite_info->max_minor_ver < opt.min_version ) { mbedtls_printf("forced ciphersuite not allowed with this protocol version\n"); ret = 2; goto usage; } /* If we select a version that's not supported by * this suite, then there will be no common ciphersuite... */ if( opt.max_version == -1 || opt.max_version > ciphersuite_info->max_minor_ver ) { opt.max_version = ciphersuite_info->max_minor_ver; } if( opt.min_version < ciphersuite_info->min_minor_ver ) { opt.min_version = ciphersuite_info->min_minor_ver; /* DTLS starts with TLS 1.1 */ if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM && opt.min_version < MBEDTLS_SSL_MINOR_VERSION_2 ) opt.min_version = MBEDTLS_SSL_MINOR_VERSION_2; } /* Enable RC4 if needed and not explicitly disabled */ if( ciphersuite_info->cipher == MBEDTLS_CIPHER_ARC4_128 ) { if( opt.arc4 == MBEDTLS_SSL_ARC4_DISABLED ) { mbedtls_printf("forced RC4 ciphersuite with RC4 disabled\n"); ret = 2; goto usage; } opt.arc4 = MBEDTLS_SSL_ARC4_ENABLED; } } if( opt.version_suites != NULL ) { const char *name[4] = { 0 }; /* Parse 4-element coma-separated list */ for( i = 0, p = (char *) opt.version_suites; i < 4 && *p != '\0'; i++ ) { name[i] = p; /* Terminate the current string and move on to next one */ while( *p != ',' && *p != '\0' ) p++; if( *p == ',' ) *p++ = '\0'; } if( i != 4 ) { mbedtls_printf( "too few values for version_suites\n" ); ret = 1; goto exit; } memset( version_suites, 0, sizeof( version_suites ) ); /* Get the suites identifiers from their name */ for( i = 0; i < 4; i++ ) { version_suites[i][0] = mbedtls_ssl_get_ciphersuite_id( name[i] ); if( version_suites[i][0] == 0 ) { mbedtls_printf( "unknown ciphersuite: '%s'\n", name[i] ); ret = 2; goto usage; } } } #if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED) /* * Unhexify the pre-shared key and parse the list if any given */ if( unhexify( psk, opt.psk, &psk_len ) != 0 ) { mbedtls_printf( "pre-shared key not valid hex\n" ); goto exit; } if( opt.psk_list != NULL ) { if( ( psk_info = psk_parse( opt.psk_list ) ) == NULL ) { mbedtls_printf( "psk_list invalid" ); goto exit; } } #endif /* MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED */ #if defined(MBEDTLS_SSL_ALPN) if( opt.alpn_string != NULL ) { p = (char *) opt.alpn_string; i = 0; /* Leave room for a final NULL in alpn_list */ while( i < (int) sizeof alpn_list - 1 && *p != '\0' ) { alpn_list[i++] = p; /* Terminate the current string and move on to next one */ while( *p != ',' && *p != '\0' ) p++; if( *p == ',' ) *p++ = '\0'; } } #endif /* MBEDTLS_SSL_ALPN */ /* * 0. Initialize the RNG and the session data */ mbedtls_printf( "\n . Seeding the random number generator..." ); fflush( stdout ); mbedtls_entropy_init( &entropy ); if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy, (const unsigned char *) pers, strlen( pers ) ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned -0x%x\n", -ret ); goto exit; } mbedtls_printf( " ok\n" ); #if defined(MBEDTLS_X509_CRT_PARSE_C) /* * 1.1. Load the trusted CA */ mbedtls_printf( " . Loading the CA root certificate ..." ); fflush( stdout ); #if defined(MBEDTLS_FS_IO) if( strlen( opt.ca_path ) ) if( strcmp( opt.ca_path, "none" ) == 0 ) ret = 0; else ret = mbedtls_x509_crt_parse_path( &cacert, opt.ca_path ); else if( strlen( opt.ca_file ) ) if( strcmp( opt.ca_file, "none" ) == 0 ) ret = 0; else ret = mbedtls_x509_crt_parse_file( &cacert, opt.ca_file ); else #endif #if defined(MBEDTLS_CERTS_C) for( i = 0; mbedtls_test_cas[i] != NULL; i++ ) { ret = mbedtls_x509_crt_parse( &cacert, (const unsigned char *) mbedtls_test_cas[i], mbedtls_test_cas_len[i] ); if( ret != 0 ) break; } #else { ret = 1; mbedtls_printf("MBEDTLS_CERTS_C not defined."); } #endif if( ret < 0 ) { mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse returned -0x%x\n\n", -ret ); goto exit; } mbedtls_printf( " ok (%d skipped)\n", ret ); /* * 1.2. Load own certificate and private key */ mbedtls_printf( " . Loading the server cert. and key..." ); fflush( stdout ); #if defined(MBEDTLS_FS_IO) if( strlen( opt.crt_file ) && strcmp( opt.crt_file, "none" ) != 0 ) { key_cert_init++; if( ( ret = mbedtls_x509_crt_parse_file( &srvcert, opt.crt_file ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse_file returned -0x%x\n\n", -ret ); goto exit; } } if( strlen( opt.key_file ) && strcmp( opt.key_file, "none" ) != 0 ) { key_cert_init++; if( ( ret = mbedtls_pk_parse_keyfile( &pkey, opt.key_file, "" ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_pk_parse_keyfile returned -0x%x\n\n", -ret ); goto exit; } } if( key_cert_init == 1 ) { mbedtls_printf( " failed\n ! crt_file without key_file or vice-versa\n\n" ); goto exit; } if( strlen( opt.crt_file2 ) && strcmp( opt.crt_file2, "none" ) != 0 ) { key_cert_init2++; if( ( ret = mbedtls_x509_crt_parse_file( &srvcert2, opt.crt_file2 ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse_file(2) returned -0x%x\n\n", -ret ); goto exit; } } if( strlen( opt.key_file2 ) && strcmp( opt.key_file2, "none" ) != 0 ) { key_cert_init2++; if( ( ret = mbedtls_pk_parse_keyfile( &pkey2, opt.key_file2, "" ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_pk_parse_keyfile(2) returned -0x%x\n\n", -ret ); goto exit; } } if( key_cert_init2 == 1 ) { mbedtls_printf( " failed\n ! crt_file2 without key_file2 or vice-versa\n\n" ); goto exit; } #endif if( key_cert_init == 0 && strcmp( opt.crt_file, "none" ) != 0 && strcmp( opt.key_file, "none" ) != 0 && key_cert_init2 == 0 && strcmp( opt.crt_file2, "none" ) != 0 && strcmp( opt.key_file2, "none" ) != 0 ) { #if !defined(MBEDTLS_CERTS_C) mbedtls_printf( "Not certificated or key provided, and \n" "MBEDTLS_CERTS_C not defined!\n" ); goto exit; #else #if defined(MBEDTLS_RSA_C) if( ( ret = mbedtls_x509_crt_parse( &srvcert, (const unsigned char *) mbedtls_test_srv_crt_rsa, mbedtls_test_srv_crt_rsa_len ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse returned -0x%x\n\n", -ret ); goto exit; } if( ( ret = mbedtls_pk_parse_key( &pkey, (const unsigned char *) mbedtls_test_srv_key_rsa, mbedtls_test_srv_key_rsa_len, NULL, 0 ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_pk_parse_key returned -0x%x\n\n", -ret ); goto exit; } key_cert_init = 2; #endif /* MBEDTLS_RSA_C */ #if defined(MBEDTLS_ECDSA_C) if( ( ret = mbedtls_x509_crt_parse( &srvcert2, (const unsigned char *) mbedtls_test_srv_crt_ec, mbedtls_test_srv_crt_ec_len ) ) != 0 ) { mbedtls_printf( " failed\n ! x509_crt_parse2 returned -0x%x\n\n", -ret ); goto exit; } if( ( ret = mbedtls_pk_parse_key( &pkey2, (const unsigned char *) mbedtls_test_srv_key_ec, mbedtls_test_srv_key_ec_len, NULL, 0 ) ) != 0 ) { mbedtls_printf( " failed\n ! pk_parse_key2 returned -0x%x\n\n", -ret ); goto exit; } key_cert_init2 = 2; #endif /* MBEDTLS_ECDSA_C */ #endif /* MBEDTLS_CERTS_C */ } mbedtls_printf( " ok\n" ); #endif /* MBEDTLS_X509_CRT_PARSE_C */ #if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_FS_IO) if( opt.dhm_file != NULL ) { mbedtls_printf( " . Loading DHM parameters..." ); fflush( stdout ); if( ( ret = mbedtls_dhm_parse_dhmfile( &dhm, opt.dhm_file ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_dhm_parse_dhmfile returned -0x%04X\n\n", -ret ); goto exit; } mbedtls_printf( " ok\n" ); } #endif #if defined(SNI_OPTION) if( opt.sni != NULL ) { mbedtls_printf( " . Setting up SNI information..." ); fflush( stdout ); if( ( sni_info = sni_parse( opt.sni ) ) == NULL ) { mbedtls_printf( " failed\n" ); goto exit; } mbedtls_printf( " ok\n" ); } #endif /* SNI_OPTION */ /* * 2. Setup the listening TCP socket */ mbedtls_printf( " . Bind on %s://%s:%s/ ...", opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM ? "tcp" : "udp", opt.server_addr ? opt.server_addr : "*", opt.server_port ); fflush( stdout ); if( ( ret = mbedtls_net_bind( &listen_fd, opt.server_addr, opt.server_port, opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM ? MBEDTLS_NET_PROTO_TCP : MBEDTLS_NET_PROTO_UDP ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_net_bind returned -0x%x\n\n", -ret ); goto exit; } mbedtls_printf( " ok\n" ); /* * 3. Setup stuff */ mbedtls_printf( " . Setting up the SSL/TLS structure..." ); fflush( stdout ); if( ( ret = mbedtls_ssl_config_defaults( &conf, MBEDTLS_SSL_IS_SERVER, opt.transport, MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_config_defaults returned -0x%x\n\n", -ret ); goto exit; } if( opt.auth_mode != DFL_AUTH_MODE ) mbedtls_ssl_conf_authmode( &conf, opt.auth_mode ); #if defined(MBEDTLS_SSL_PROTO_DTLS) if( opt.hs_to_min != DFL_HS_TO_MIN || opt.hs_to_max != DFL_HS_TO_MAX ) mbedtls_ssl_conf_handshake_timeout( &conf, opt.hs_to_min, opt.hs_to_max ); #endif /* MBEDTLS_SSL_PROTO_DTLS */ #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) if( ( ret = mbedtls_ssl_conf_max_frag_len( &conf, opt.mfl_code ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_conf_max_frag_len returned %d\n\n", ret ); goto exit; }; #endif #if defined(MBEDTLS_SSL_TRUNCATED_HMAC) if( opt.trunc_hmac != DFL_TRUNC_HMAC ) mbedtls_ssl_conf_truncated_hmac( &conf, opt.trunc_hmac ); #endif #if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET) if( opt.extended_ms != DFL_EXTENDED_MS ) mbedtls_ssl_conf_extended_master_secret( &conf, opt.extended_ms ); #endif #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC) if( opt.etm != DFL_ETM ) mbedtls_ssl_conf_encrypt_then_mac( &conf, opt.etm ); #endif #if defined(MBEDTLS_SSL_ALPN) if( opt.alpn_string != NULL ) if( ( ret = mbedtls_ssl_conf_alpn_protocols( &conf, alpn_list ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_conf_alpn_protocols returned %d\n\n", ret ); goto exit; } #endif mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg ); mbedtls_ssl_conf_dbg( &conf, my_debug, stdout ); #if defined(MBEDTLS_SSL_CACHE_C) if( opt.cache_max != -1 ) mbedtls_ssl_cache_set_max_entries( &cache, opt.cache_max ); if( opt.cache_timeout != -1 ) mbedtls_ssl_cache_set_timeout( &cache, opt.cache_timeout ); mbedtls_ssl_conf_session_cache( &conf, &cache, mbedtls_ssl_cache_get, mbedtls_ssl_cache_set ); #endif #if defined(MBEDTLS_SSL_SESSION_TICKETS) if( opt.tickets == MBEDTLS_SSL_SESSION_TICKETS_ENABLED ) { if( ( ret = mbedtls_ssl_ticket_setup( &ticket_ctx, mbedtls_ctr_drbg_random, &ctr_drbg, MBEDTLS_CIPHER_AES_256_GCM, opt.ticket_timeout ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_ticket_setup returned %d\n\n", ret ); goto exit; } mbedtls_ssl_conf_session_tickets_cb( &conf, mbedtls_ssl_ticket_write, mbedtls_ssl_ticket_parse, &ticket_ctx ); } #endif #if defined(MBEDTLS_SSL_PROTO_DTLS) if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM ) { #if defined(MBEDTLS_SSL_COOKIE_C) if( opt.cookies > 0 ) { if( ( ret = mbedtls_ssl_cookie_setup( &cookie_ctx, mbedtls_ctr_drbg_random, &ctr_drbg ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_cookie_setup returned %d\n\n", ret ); goto exit; } mbedtls_ssl_conf_dtls_cookies( &conf, mbedtls_ssl_cookie_write, mbedtls_ssl_cookie_check, &cookie_ctx ); } else #endif /* MBEDTLS_SSL_COOKIE_C */ #if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY) if( opt.cookies == 0 ) { mbedtls_ssl_conf_dtls_cookies( &conf, NULL, NULL, NULL ); } else #endif /* MBEDTLS_SSL_DTLS_HELLO_VERIFY */ { ; /* Nothing to do */ } #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY) if( opt.anti_replay != DFL_ANTI_REPLAY ) mbedtls_ssl_conf_dtls_anti_replay( &conf, opt.anti_replay ); #endif #if defined(MBEDTLS_SSL_DTLS_BADMAC_LIMIT) if( opt.badmac_limit != DFL_BADMAC_LIMIT ) mbedtls_ssl_conf_dtls_badmac_limit( &conf, opt.badmac_limit ); #endif } #endif /* MBEDTLS_SSL_PROTO_DTLS */ if( opt.force_ciphersuite[0] != DFL_FORCE_CIPHER ) mbedtls_ssl_conf_ciphersuites( &conf, opt.force_ciphersuite ); #if defined(MBEDTLS_ARC4_C) if( opt.arc4 != DFL_ARC4 ) mbedtls_ssl_conf_arc4_support( &conf, opt.arc4 ); #endif if( opt.version_suites != NULL ) { mbedtls_ssl_conf_ciphersuites_for_version( &conf, version_suites[0], MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_0 ); mbedtls_ssl_conf_ciphersuites_for_version( &conf, version_suites[1], MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_1 ); mbedtls_ssl_conf_ciphersuites_for_version( &conf, version_suites[2], MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_2 ); mbedtls_ssl_conf_ciphersuites_for_version( &conf, version_suites[3], MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_3 ); } if( opt.allow_legacy != DFL_ALLOW_LEGACY ) mbedtls_ssl_conf_legacy_renegotiation( &conf, opt.allow_legacy ); #if defined(MBEDTLS_SSL_RENEGOTIATION) mbedtls_ssl_conf_renegotiation( &conf, opt.renegotiation ); if( opt.renego_delay != DFL_RENEGO_DELAY ) mbedtls_ssl_conf_renegotiation_enforced( &conf, opt.renego_delay ); if( opt.renego_period != DFL_RENEGO_PERIOD ) { PUT_UINT64_BE( renego_period, opt.renego_period, 0 ); mbedtls_ssl_conf_renegotiation_period( &conf, renego_period ); } #endif #if defined(MBEDTLS_X509_CRT_PARSE_C) if( strcmp( opt.ca_path, "none" ) != 0 && strcmp( opt.ca_file, "none" ) != 0 ) { mbedtls_ssl_conf_ca_chain( &conf, &cacert, NULL ); } if( key_cert_init ) if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &srvcert, &pkey ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_conf_own_cert returned %d\n\n", ret ); goto exit; } if( key_cert_init2 ) if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &srvcert2, &pkey2 ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_conf_own_cert returned %d\n\n", ret ); goto exit; } #endif #if defined(SNI_OPTION) if( opt.sni != NULL ) mbedtls_ssl_conf_sni( &conf, sni_callback, sni_info ); #endif #if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED) if( strlen( opt.psk ) != 0 && strlen( opt.psk_identity ) != 0 ) { ret = mbedtls_ssl_conf_psk( &conf, psk, psk_len, (const unsigned char *) opt.psk_identity, strlen( opt.psk_identity ) ); if( ret != 0 ) { mbedtls_printf( " failed\n mbedtls_ssl_conf_psk returned -0x%04X\n\n", - ret ); goto exit; } } if( opt.psk_list != NULL ) mbedtls_ssl_conf_psk_cb( &conf, psk_callback, psk_info ); #endif #if defined(MBEDTLS_DHM_C) /* * Use different group than default DHM group */ #if defined(MBEDTLS_FS_IO) if( opt.dhm_file != NULL ) ret = mbedtls_ssl_conf_dh_param_ctx( &conf, &dhm ); #endif if( ret != 0 ) { mbedtls_printf( " failed\n mbedtls_ssl_conf_dh_param returned -0x%04X\n\n", - ret ); goto exit; } #endif if( opt.min_version != DFL_MIN_VERSION ) mbedtls_ssl_conf_min_version( &conf, MBEDTLS_SSL_MAJOR_VERSION_3, opt.min_version ); if( opt.max_version != DFL_MIN_VERSION ) mbedtls_ssl_conf_max_version( &conf, MBEDTLS_SSL_MAJOR_VERSION_3, opt.max_version ); if( ( ret = mbedtls_ssl_setup( &ssl, &conf ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_setup returned -0x%x\n\n", -ret ); goto exit; } if( opt.nbio == 2 ) mbedtls_ssl_set_bio( &ssl, &client_fd, my_send, my_recv, NULL ); else mbedtls_ssl_set_bio( &ssl, &client_fd, mbedtls_net_send, mbedtls_net_recv, opt.nbio == 0 ? mbedtls_net_recv_timeout : NULL ); #if defined(MBEDTLS_TIMING_C) mbedtls_ssl_set_timer_cb( &ssl, &timer, mbedtls_timing_set_delay, mbedtls_timing_get_delay ); #endif mbedtls_printf( " ok\n" ); reset: #if !defined(_WIN32) if( received_sigterm ) { mbedtls_printf( " interrupted by SIGTERM\n" ); ret = 0; goto exit; } #endif if( ret == MBEDTLS_ERR_SSL_CLIENT_RECONNECT ) { mbedtls_printf( " ! Client initiated reconnection from same port\n" ); goto handshake; } #ifdef MBEDTLS_ERROR_C if( ret != 0 ) { char error_buf[100]; mbedtls_strerror( ret, error_buf, 100 ); mbedtls_printf("Last error was: %d - %s\n\n", ret, error_buf ); } #endif mbedtls_net_free( &client_fd ); mbedtls_ssl_session_reset( &ssl ); /* * 3. Wait until a client connects */ mbedtls_printf( " . Waiting for a remote connection ..." ); fflush( stdout ); if( ( ret = mbedtls_net_accept( &listen_fd, &client_fd, client_ip, sizeof( client_ip ), &cliip_len ) ) != 0 ) { #if !defined(_WIN32) if( received_sigterm ) { mbedtls_printf( " interrupted by signal\n" ); ret = 0; goto exit; } #endif mbedtls_printf( " failed\n ! mbedtls_net_accept returned -0x%x\n\n", -ret ); goto exit; } if( opt.nbio > 0 ) ret = mbedtls_net_set_nonblock( &client_fd ); else ret = mbedtls_net_set_block( &client_fd ); if( ret != 0 ) { mbedtls_printf( " failed\n ! net_set_(non)block() returned -0x%x\n\n", -ret ); goto exit; } mbedtls_ssl_conf_read_timeout( &conf, opt.read_timeout ); #if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY) if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM ) { if( ( ret = mbedtls_ssl_set_client_transport_id( &ssl, client_ip, cliip_len ) ) != 0 ) { mbedtls_printf( " failed\n ! " "mbedtls_ssl_set_client_transport_id() returned -0x%x\n\n", -ret ); goto exit; } } #endif /* MBEDTLS_SSL_DTLS_HELLO_VERIFY */ #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED) if( opt.ecjpake_pw != DFL_ECJPAKE_PW ) { if( ( ret = mbedtls_ssl_set_hs_ecjpake_password( &ssl, (const unsigned char *) opt.ecjpake_pw, strlen( opt.ecjpake_pw ) ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_set_hs_ecjpake_password returned %d\n\n", ret ); goto exit; } } #endif mbedtls_printf( " ok\n" ); /* * 4. Handshake */ handshake: mbedtls_printf( " . Performing the SSL/TLS handshake..." ); fflush( stdout ); do ret = mbedtls_ssl_handshake( &ssl ); while( ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE ); if( ret == MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED ) { mbedtls_printf( " hello verification requested\n" ); ret = 0; goto reset; } else if( ret != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_handshake returned -0x%x\n\n", -ret ); #if defined(MBEDTLS_X509_CRT_PARSE_C) if( ret == MBEDTLS_ERR_X509_CERT_VERIFY_FAILED ) { char vrfy_buf[512]; flags = mbedtls_ssl_get_verify_result( &ssl ); mbedtls_x509_crt_verify_info( vrfy_buf, sizeof( vrfy_buf ), " ! ", flags ); mbedtls_printf( "%s\n", vrfy_buf ); } #endif goto reset; } else /* ret == 0 */ { mbedtls_printf( " ok\n [ Protocol is %s ]\n [ Ciphersuite is %s ]\n", mbedtls_ssl_get_version( &ssl ), mbedtls_ssl_get_ciphersuite( &ssl ) ); } if( ( ret = mbedtls_ssl_get_record_expansion( &ssl ) ) >= 0 ) mbedtls_printf( " [ Record expansion is %d ]\n", ret ); else mbedtls_printf( " [ Record expansion is unknown (compression) ]\n" ); #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) mbedtls_printf( " [ Maximum fragment length is %u ]\n", (unsigned int) mbedtls_ssl_get_max_frag_len( &ssl ) ); #endif #if defined(MBEDTLS_SSL_ALPN) if( opt.alpn_string != NULL ) { const char *alp = mbedtls_ssl_get_alpn_protocol( &ssl ); mbedtls_printf( " [ Application Layer Protocol is %s ]\n", alp ? alp : "(none)" ); } #endif #if defined(MBEDTLS_X509_CRT_PARSE_C) /* * 5. Verify the server certificate */ mbedtls_printf( " . Verifying peer X.509 certificate..." ); if( ( flags = mbedtls_ssl_get_verify_result( &ssl ) ) != 0 ) { char vrfy_buf[512]; mbedtls_printf( " failed\n" ); mbedtls_x509_crt_verify_info( vrfy_buf, sizeof( vrfy_buf ), " ! ", flags ); mbedtls_printf( "%s\n", vrfy_buf ); } else mbedtls_printf( " ok\n" ); if( mbedtls_ssl_get_peer_cert( &ssl ) != NULL ) { char crt_buf[512]; mbedtls_printf( " . Peer certificate information ...\n" ); mbedtls_x509_crt_info( crt_buf, sizeof( crt_buf ), " ", mbedtls_ssl_get_peer_cert( &ssl ) ); mbedtls_printf( "%s\n", crt_buf ); } #endif /* MBEDTLS_X509_CRT_PARSE_C */ if( opt.exchanges == 0 ) goto close_notify; exchanges_left = opt.exchanges; data_exchange: /* * 6. Read the HTTP Request */ mbedtls_printf( " < Read from client:" ); fflush( stdout ); /* * TLS and DTLS need different reading styles (stream vs datagram) */ if( opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM ) { do { int terminated = 0; len = sizeof( buf ) - 1; memset( buf, 0, sizeof( buf ) ); ret = mbedtls_ssl_read( &ssl, buf, len ); if( ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE ) continue; if( ret <= 0 ) { switch( ret ) { case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY: mbedtls_printf( " connection was closed gracefully\n" ); goto close_notify; case 0: case MBEDTLS_ERR_NET_CONN_RESET: mbedtls_printf( " connection was reset by peer\n" ); ret = MBEDTLS_ERR_NET_CONN_RESET; goto reset; default: mbedtls_printf( " mbedtls_ssl_read returned -0x%x\n", -ret ); goto reset; } } if( mbedtls_ssl_get_bytes_avail( &ssl ) == 0 ) { len = ret; buf[len] = '\0'; mbedtls_printf( " %d bytes read\n\n%s\n", len, (char *) buf ); /* End of message should be detected according to the syntax of the * application protocol (eg HTTP), just use a dummy test here. */ if( buf[len - 1] == '\n' ) terminated = 1; } else { int extra_len, ori_len; unsigned char *larger_buf; ori_len = ret; extra_len = (int) mbedtls_ssl_get_bytes_avail( &ssl ); larger_buf = mbedtls_calloc( 1, ori_len + extra_len + 1 ); if( larger_buf == NULL ) { mbedtls_printf( " ! memory allocation failed\n" ); ret = 1; goto reset; } memset( larger_buf, 0, ori_len + extra_len ); memcpy( larger_buf, buf, ori_len ); /* This read should never fail and get the whole cached data */ ret = mbedtls_ssl_read( &ssl, larger_buf + ori_len, extra_len ); if( ret != extra_len || mbedtls_ssl_get_bytes_avail( &ssl ) != 0 ) { mbedtls_printf( " ! mbedtls_ssl_read failed on cached data\n" ); ret = 1; goto reset; } larger_buf[ori_len + extra_len] = '\0'; mbedtls_printf( " %u bytes read (%u + %u)\n\n%s\n", ori_len + extra_len, ori_len, extra_len, (char *) larger_buf ); /* End of message should be detected according to the syntax of the * application protocol (eg HTTP), just use a dummy test here. */ if( larger_buf[ori_len + extra_len - 1] == '\n' ) terminated = 1; mbedtls_free( larger_buf ); } if( terminated ) { ret = 0; break; } } while( 1 ); } else /* Not stream, so datagram */ { len = sizeof( buf ) - 1; memset( buf, 0, sizeof( buf ) ); do ret = mbedtls_ssl_read( &ssl, buf, len ); while( ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE ); if( ret <= 0 ) { switch( ret ) { case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY: mbedtls_printf( " connection was closed gracefully\n" ); ret = 0; goto close_notify; default: mbedtls_printf( " mbedtls_ssl_read returned -0x%x\n", -ret ); goto reset; } } len = ret; buf[len] = '\0'; mbedtls_printf( " %d bytes read\n\n%s", len, (char *) buf ); ret = 0; } /* * 7a. Request renegotiation while client is waiting for input from us. * (only on the first exchange, to be able to test retransmission) */ #if defined(MBEDTLS_SSL_RENEGOTIATION) if( opt.renegotiate && exchanges_left == opt.exchanges ) { mbedtls_printf( " . Requestion renegotiation..." ); fflush( stdout ); while( ( ret = mbedtls_ssl_renegotiate( &ssl ) ) != 0 ) { if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE ) { mbedtls_printf( " failed\n ! mbedtls_ssl_renegotiate returned %d\n\n", ret ); goto reset; } } mbedtls_printf( " ok\n" ); } #endif /* MBEDTLS_SSL_RENEGOTIATION */ /* * 7. Write the 200 Response */ mbedtls_printf( " > Write to client:" ); fflush( stdout ); len = sprintf( (char *) buf, HTTP_RESPONSE, mbedtls_ssl_get_ciphersuite( &ssl ) ); if( opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM ) { for( written = 0, frags = 0; written < len; written += ret, frags++ ) { while( ( ret = mbedtls_ssl_write( &ssl, buf + written, len - written ) ) <= 0 ) { if( ret == MBEDTLS_ERR_NET_CONN_RESET ) { mbedtls_printf( " failed\n ! peer closed the connection\n\n" ); goto reset; } if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE ) { mbedtls_printf( " failed\n ! mbedtls_ssl_write returned %d\n\n", ret ); goto reset; } } } } else /* Not stream, so datagram */ { do ret = mbedtls_ssl_write( &ssl, buf, len ); while( ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE ); if( ret < 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_write returned %d\n\n", ret ); goto reset; } frags = 1; written = ret; } buf[written] = '\0'; mbedtls_printf( " %d bytes written in %d fragments\n\n%s\n", written, frags, (char *) buf ); ret = 0; /* * 7b. Continue doing data exchanges? */ if( --exchanges_left > 0 ) goto data_exchange; /* * 8. Done, cleanly close the connection */ close_notify: mbedtls_printf( " . Closing the connection..." ); /* No error checking, the connection might be closed already */ do ret = mbedtls_ssl_close_notify( &ssl ); while( ret == MBEDTLS_ERR_SSL_WANT_WRITE ); ret = 0; mbedtls_printf( " done\n" ); goto reset; /* * Cleanup and exit */ exit: #ifdef MBEDTLS_ERROR_C if( ret != 0 ) { char error_buf[100]; mbedtls_strerror( ret, error_buf, 100 ); mbedtls_printf("Last error was: -0x%X - %s\n\n", -ret, error_buf ); } #endif mbedtls_printf( " . Cleaning up..." ); fflush( stdout ); mbedtls_net_free( &client_fd ); mbedtls_net_free( &listen_fd ); #if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_FS_IO) mbedtls_dhm_free( &dhm ); #endif #if defined(MBEDTLS_X509_CRT_PARSE_C) mbedtls_x509_crt_free( &cacert ); mbedtls_x509_crt_free( &srvcert ); mbedtls_pk_free( &pkey ); mbedtls_x509_crt_free( &srvcert2 ); mbedtls_pk_free( &pkey2 ); #endif #if defined(SNI_OPTION) sni_free( sni_info ); #endif #if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED) psk_free( psk_info ); #endif #if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_FS_IO) mbedtls_dhm_free( &dhm ); #endif mbedtls_ssl_free( &ssl ); mbedtls_ssl_config_free( &conf ); mbedtls_ctr_drbg_free( &ctr_drbg ); mbedtls_entropy_free( &entropy ); #if defined(MBEDTLS_SSL_CACHE_C) mbedtls_ssl_cache_free( &cache ); #endif #if defined(MBEDTLS_SSL_SESSION_TICKETS) mbedtls_ssl_ticket_free( &ticket_ctx ); #endif #if defined(MBEDTLS_SSL_COOKIE_C) mbedtls_ssl_cookie_free( &cookie_ctx ); #endif #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) #if defined(MBEDTLS_MEMORY_DEBUG) mbedtls_memory_buffer_alloc_status(); #endif mbedtls_memory_buffer_alloc_free(); #endif mbedtls_printf( " done.\n" ); #if defined(_WIN32) mbedtls_printf( " + Press Enter to exit this program.\n" ); fflush( stdout ); getchar(); #endif // Shell can not handle large exit numbers -> 1 for errors if( ret < 0 ) ret = 1; return( ret ); } #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_ENTROPY_C && MBEDTLS_SSL_TLS_C && MBEDTLS_SSL_SRV_C && MBEDTLS_NET_C && MBEDTLS_RSA_C && MBEDTLS_CTR_DRBG_C */