diff options
Diffstat (limited to 'apps/s_server.c')
| -rw-r--r-- | apps/s_server.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/apps/s_server.c b/apps/s_server.c index 583bfccd5c..aeec035c62 100644 --- a/apps/s_server.c +++ b/apps/s_server.c @@ -113,6 +113,32 @@ * ECC cipher suite support in OpenSSL originally developed by * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. */ +/* ==================================================================== + * Copyright 2005 Nokia. All rights reserved. + * + * The portions of the attached software ("Contribution") is developed by + * Nokia Corporation and is licensed pursuant to the OpenSSL open source + * license. + * + * The Contribution, originally written by Mika Kousa and Pasi Eronen of + * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites + * support (see RFC 4279) to OpenSSL. + * + * No patent licenses or other rights except those expressly stated in + * the OpenSSL open source license shall be deemed granted or received + * expressly, by implication, estoppel, or otherwise. + * + * No assurances are provided by Nokia that the Contribution does not + * infringe the patent or other intellectual property rights of any third + * party or that the license provides you with all the necessary rights + * to make use of the Contribution. + * + * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN + * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA + * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY + * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR + * OTHERWISE. + */ /* Until the key-gen callbacks are modified to use newer prototypes, we allow * deprecated functions for openssl-internal code */ @@ -121,6 +147,7 @@ #endif #include <assert.h> +#include <ctype.h> #include <stdio.h> #include <stdlib.h> #include <string.h> @@ -263,6 +290,70 @@ static int enable_timeouts = 0; static long socket_mtu; static int cert_chain = 0; +#ifndef OPENSSL_NO_PSK +static char *psk_identity="Client_identity"; +static char *psk_key=NULL; /* by default PSK is not used */ + +static unsigned int psk_server_cb(SSL *ssl, const char *identity, + unsigned char *psk, unsigned int max_psk_len) + { + unsigned int psk_len = 0; + int ret; + BIGNUM *bn = NULL; + + if (s_debug) + BIO_printf(bio_s_out,"psk_server_cb\n"); + if (!identity) + { + BIO_printf(bio_err,"Error: client did not send PSK identity\n"); + goto out_err; + } + if (s_debug) + BIO_printf(bio_s_out,"identity_len=%d identity=%s\n", + identity ? strlen(identity) : 0, identity); + + /* here we could lookup the given identity e.g. from a database */ + if (strcmp(identity, psk_identity) != 0) + { + BIO_printf(bio_s_out, "PSK error: client identity not found\n"); + goto out_err; + } + if (s_debug) + BIO_printf(bio_s_out, "PSK client identity found\n"); + + /* convert the PSK key to binary */ + ret = BN_hex2bn(&bn, psk_key); + if (!ret) + { + BIO_printf(bio_err,"Could not convert PSK key '%s' to BIGNUM\n", psk_key); + if (bn) + BN_free(bn); + return 0; + } + if (BN_num_bytes(bn) > (int)max_psk_len) + { + BIO_printf(bio_err,"psk buffer of callback is too small (%d) for key (%d)\n", + max_psk_len, BN_num_bytes(bn)); + BN_free(bn); + return 0; + } + + ret = BN_bn2bin(bn, psk); + BN_free(bn); + + if (ret < 0) + goto out_err; + psk_len = (unsigned int)ret; + + if (s_debug) + BIO_printf(bio_s_out, "fetched PSK len=%d\n", psk_len); + return psk_len; + out_err: + if (s_debug) + BIO_printf(bio_err, "Error in PSK server callback\n"); + return 0; + } +#endif #ifdef MONOLITH static void s_server_init(void) @@ -339,6 +430,10 @@ static void sv_usage(void) BIO_printf(bio_err," -serverpref - Use server's cipher preferences\n"); BIO_printf(bio_err," -quiet - No server output\n"); BIO_printf(bio_err," -no_tmp_rsa - Do not generate a tmp RSA key\n"); +#ifndef OPENSSL_NO_PSK + BIO_printf(bio_err," -psk_hint arg - PSK identity hint to use\n"); + BIO_printf(bio_err," -psk arg - PSK in hex (without 0x)\n"); +#endif BIO_printf(bio_err," -ssl2 - Just talk SSLv2\n"); BIO_printf(bio_err," -ssl3 - Just talk SSLv3\n"); BIO_printf(bio_err," -tls1 - Just talk TLSv1\n"); @@ -600,6 +695,10 @@ int MAIN(int argc, char *argv[]) #ifndef OPENSSL_NO_TLSEXT tlsextctx tlsextcbp = {NULL, NULL, SSL_TLSEXT_ERR_ALERT_WARNING}; #endif +#ifndef OPENSSL_NO_PSK + /* by default do not send a PSK identity hint */ + static char *psk_identity_hint=NULL; +#endif #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3) meth=SSLv23_server_method(); #elif !defined(OPENSSL_NO_SSL3) @@ -782,6 +881,27 @@ int MAIN(int argc, char *argv[]) { no_dhe=1; } else if (strcmp(*argv,"-no_ecdhe") == 0) { no_ecdhe=1; } +#ifndef OPENSSL_NO_PSK + else if (strcmp(*argv,"-psk_hint") == 0) + { + if (--argc < 1) goto bad; + psk_identity_hint= *(++argv); + } + else if (strcmp(*argv,"-psk") == 0) + { + int i; + + if (--argc < 1) goto bad; + psk_key=*(++argv); + for (i=0; i<strlen(psk_key); i++) + { + if (isxdigit((int)psk_key[i])) + continue; + BIO_printf(bio_err,"Not a hex number '%s'\n",*argv); + goto bad; + } + } +#endif else if (strcmp(*argv,"-www") == 0) { www=1; } else if (strcmp(*argv,"-WWW") == 0) @@ -1259,6 +1379,22 @@ bad: #endif #endif +#ifndef OPENSSL_NO_PSK + if (psk_key != NULL) + { + if (s_debug) + BIO_printf(bio_s_out, "PSK key given, setting server callback\n"); + SSL_CTX_set_psk_server_callback(ctx, psk_server_cb); + } + + if (!SSL_CTX_use_psk_identity_hint(ctx, psk_identity_hint)) + { + BIO_printf(bio_err,"error setting PSK identity hint to context\n"); + ERR_print_errors(bio_err); + goto end; + } +#endif + if (cipher != NULL) { if(!SSL_CTX_set_cipher_list(ctx,cipher)) |