diff options
author | Bodo Möller <bodo@openssl.org> | 2007-09-21 06:54:24 +0000 |
---|---|---|
committer | Bodo Möller <bodo@openssl.org> | 2007-09-21 06:54:24 +0000 |
commit | 761772d7e19145fa9afb2a0c830ead69a33f3fa5 (patch) | |
tree | f6fbfed11e54a5286025bf235889cca1cb87d503 /ssl/s3_lib.c | |
parent | 54ef01b54bd64fdf5820d3860f4c458a9c2fa4f0 (diff) |
Implement the Opaque PRF Input TLS extension
(draft-rescorla-tls-opaque-prf-input-00.txt), and do some cleanups and
bugfixes on the way. In particular, this fixes the buffer bounds
checks in ssl_add_clienthello_tlsext() and in ssl_add_serverhello_tlsext().
Note that the opaque PRF Input TLS extension is not compiled by default;
see CHANGES.
Diffstat (limited to 'ssl/s3_lib.c')
-rw-r--r-- | ssl/s3_lib.c | 55 |
1 files changed, 54 insertions, 1 deletions
diff --git a/ssl/s3_lib.c b/ssl/s3_lib.c index b2d1fefc31..476d27a7b2 100644 --- a/ssl/s3_lib.c +++ b/ssl/s3_lib.c @@ -2083,6 +2083,13 @@ void ssl3_free(SSL *s) if(s == NULL) return; +#ifdef TLSEXT_TYPE_opaque_prf_input + if (s->s3->client_opaque_prf_input != NULL) + OPENSSL_free(s->s3->client_opaque_prf_input); + if (s->s3->server_opaque_prf_input != NULL) + OPENSSL_free(s->s3->server_opaque_prf_input); +#endif + ssl3_cleanup_key_block(s); if (s->s3->rbuf.buf != NULL) OPENSSL_free(s->s3->rbuf.buf); @@ -2115,6 +2122,15 @@ void ssl3_clear(SSL *s) unsigned char *rp,*wp; size_t rlen, wlen; +#ifdef TLSEXT_TYPE_opaque_prf_input + if (s->s3->client_opaque_prf_input != NULL) + OPENSSL_free(s->s3->client_opaque_prf_input); + s->s3->client_opaque_prf_input = NULL; + if (s->s3->server_opaque_prf_input != NULL) + OPENSSL_free(s->s3->server_opaque_prf_input); + s->s3->server_opaque_prf_input = NULL; +#endif + ssl3_cleanup_key_block(s); if (s->s3->tmp.ca_names != NULL) sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free); @@ -2337,11 +2353,33 @@ long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg) SSLerr(SSL_F_SSL3_CTRL, SSL_R_SSL3_EXT_INVALID_SERVERNAME_TYPE); return 0; } - s->options |= SSL_OP_NO_SSLv2; /* can't use extension w/ SSL 2.0 format */ break; case SSL_CTRL_SET_TLSEXT_DEBUG_ARG: s->tlsext_debug_arg=parg; + ret = 1; break; + +#ifdef TLSEXT_TYPE_opaque_prf_input + case SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT: + if (larg > 12288) /* actual internal limit is 2^16 for the complete hello message + * (including the cert chain and everything) */ + { + SSLerr(SSL_F_SSL3_CTRL, SSL_R_OPAQUE_PRF_INPUT_TOO_LONG); + break; + } + if (s->tlsext_opaque_prf_input != NULL) + OPENSSL_free(s->tlsext_opaque_prf_input); + s->tlsext_opaque_prf_input = BUF_memdup(parg, (size_t)larg); + if (s->tlsext_opaque_prf_input != NULL) + { + s->tlsext_opaque_prf_input_len = (size_t)larg; + ret = 1; + } + else + s->tlsext_opaque_prf_input_len = 0; + break; +#endif + #endif /* !OPENSSL_NO_TLSEXT */ default: break; @@ -2562,7 +2600,15 @@ long ssl3_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) } return 1; } + +#ifdef TLSEXT_TYPE_opaque_prf_input + case SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB_ARG: + ctx->tlsext_opaque_prf_input_callback_arg = parg; + return 1; +#endif + #endif /* !OPENSSL_NO_TLSEXT */ + /* A Thawte special :-) */ case SSL_CTRL_EXTRA_CHAIN_CERT: if (ctx->extra_certs == NULL) @@ -2612,6 +2658,13 @@ long ssl3_ctx_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) case SSL_CTRL_SET_TLSEXT_SERVERNAME_CB: ctx->tlsext_servername_callback=(int (*)(SSL *,int *,void *))fp; break; + +#ifdef TLSEXT_TYPE_opaque_prf_input + case SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB: + ctx->tlsext_opaque_prf_input_callback = (int (*)(SSL *,void *, size_t, void *))fp; + break; +#endif + #endif default: return(0); |