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ruby--ruby/ext/openssl/ossl_ssl.c
nahi 3ff2f9f3a3 * ext/openssl/ossl_ssl.c: Add SSL constants and allow to unset SSL 
option to prevent BEAST attack. See [Bug #5353].

  In OpenSSL, OP_DONT_INSERT_EMPTY_FRAGMENTS is used to prevent
  TLS-CBC-IV vulunerability described at
  http://www.openssl.org/~bodo/tls-cbc.txt
  It's known issue of TLSv1/SSLv3 but it attracts lots of attention
  these days as BEAST attack. (CVE-2011-3389)

  Until now ossl sets OP_ALL at SSLContext allocation and call
  SSL_CTX_set_options at connection.  SSL_CTX_set_options updates the
  value by using |= so bits set by OP_ALL cannot be unset afterwards.

  This commit changes to call SSL_CTX_set_options only 1 time for each
  SSLContext. It sets the specified value if SSLContext#options= are
  called and sets OP_ALL if not.

  To help users to unset bits in OP_ALL, this commit also adds several
  constant to SSL such as
  OpenSSL::SSL::OP_DONT_INSERT_EMPTY_FRAGMENTS.  These constants were
  not exposed in Ruby because there's no way to unset bits in OP_ALL
  before.

  Following is an example to enable 0/n split for BEAST prevention.

    ctx.options = OP_ALL & ~OP_DONT_INSERT_EMPTY_FRAGMENTS

* test/openssl/test_ssl.rb: Test above option exists.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34482 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2012-02-08 05:27:14 +00:00

2013 lines
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/*
* $Id$
* 'OpenSSL for Ruby' project
* Copyright (C) 2000-2002 GOTOU Yuuzou <gotoyuzo@notwork.org>
* Copyright (C) 2001-2002 Michal Rokos <m.rokos@sh.cvut.cz>
* Copyright (C) 2001-2007 Technorama Ltd. <oss-ruby@technorama.net>
* All rights reserved.
*/
/*
* This program is licenced under the same licence as Ruby.
* (See the file 'LICENCE'.)
*/
#include "ossl.h"
#if defined(HAVE_UNISTD_H)
# include <unistd.h> /* for read(), and write() */
#endif
#define numberof(ary) (int)(sizeof(ary)/sizeof((ary)[0]))
#ifdef _WIN32
# define TO_SOCKET(s) _get_osfhandle(s)
#else
# define TO_SOCKET(s) (s)
#endif
VALUE mSSL;
VALUE eSSLError;
VALUE cSSLContext;
VALUE cSSLSocket;
#define ossl_sslctx_set_cert(o,v) rb_iv_set((o),"@cert",(v))
#define ossl_sslctx_set_key(o,v) rb_iv_set((o),"@key",(v))
#define ossl_sslctx_set_client_ca(o,v) rb_iv_set((o),"@client_ca",(v))
#define ossl_sslctx_set_ca_file(o,v) rb_iv_set((o),"@ca_file",(v))
#define ossl_sslctx_set_ca_path(o,v) rb_iv_set((o),"@ca_path",(v))
#define ossl_sslctx_set_timeout(o,v) rb_iv_set((o),"@timeout",(v))
#define ossl_sslctx_set_verify_mode(o,v) rb_iv_set((o),"@verify_mode",(v))
#define ossl_sslctx_set_verify_dep(o,v) rb_iv_set((o),"@verify_depth",(v))
#define ossl_sslctx_set_verify_cb(o,v) rb_iv_set((o),"@verify_callback",(v))
#define ossl_sslctx_set_options(o,v) rb_iv_set((o),"@options",(v))
#define ossl_sslctx_set_cert_store(o,v) rb_iv_set((o),"@cert_store",(v))
#define ossl_sslctx_set_extra_cert(o,v) rb_iv_set((o),"@extra_chain_cert",(v))
#define ossl_sslctx_set_client_cert_cb(o,v) rb_iv_set((o),"@client_cert_cb",(v))
#define ossl_sslctx_set_tmp_dh_cb(o,v) rb_iv_set((o),"@tmp_dh_callback",(v))
#define ossl_sslctx_set_sess_id_ctx(o, v) rb_iv_get((o),"@session_id_context"(v))
#define ossl_sslctx_get_cert(o) rb_iv_get((o),"@cert")
#define ossl_sslctx_get_key(o) rb_iv_get((o),"@key")
#define ossl_sslctx_get_client_ca(o) rb_iv_get((o),"@client_ca")
#define ossl_sslctx_get_ca_file(o) rb_iv_get((o),"@ca_file")
#define ossl_sslctx_get_ca_path(o) rb_iv_get((o),"@ca_path")
#define ossl_sslctx_get_timeout(o) rb_iv_get((o),"@timeout")
#define ossl_sslctx_get_verify_mode(o) rb_iv_get((o),"@verify_mode")
#define ossl_sslctx_get_verify_dep(o) rb_iv_get((o),"@verify_depth")
#define ossl_sslctx_get_verify_cb(o) rb_iv_get((o),"@verify_callback")
#define ossl_sslctx_get_options(o) rb_iv_get((o),"@options")
#define ossl_sslctx_get_cert_store(o) rb_iv_get((o),"@cert_store")
#define ossl_sslctx_get_extra_cert(o) rb_iv_get((o),"@extra_chain_cert")
#define ossl_sslctx_get_client_cert_cb(o) rb_iv_get((o),"@client_cert_cb")
#define ossl_sslctx_get_tmp_dh_cb(o) rb_iv_get((o),"@tmp_dh_callback")
#define ossl_sslctx_get_sess_id_ctx(o) rb_iv_get((o),"@session_id_context")
static const char *ossl_sslctx_attrs[] = {
"cert", "key", "client_ca", "ca_file", "ca_path",
"timeout", "verify_mode", "verify_depth",
"verify_callback", "options", "cert_store", "extra_chain_cert",
"client_cert_cb", "tmp_dh_callback", "session_id_context",
"session_get_cb", "session_new_cb", "session_remove_cb",
#ifdef HAVE_SSL_SET_TLSEXT_HOST_NAME
"servername_cb",
#endif
};
#define ossl_ssl_get_io(o) rb_iv_get((o),"@io")
#define ossl_ssl_get_ctx(o) rb_iv_get((o),"@context")
#define ossl_ssl_get_sync_close(o) rb_iv_get((o),"@sync_close")
#define ossl_ssl_get_x509(o) rb_iv_get((o),"@x509")
#define ossl_ssl_get_key(o) rb_iv_get((o),"@key")
#define ossl_ssl_get_tmp_dh(o) rb_iv_get((o),"@tmp_dh")
#define ossl_ssl_set_io(o,v) rb_iv_set((o),"@io",(v))
#define ossl_ssl_set_ctx(o,v) rb_iv_set((o),"@context",(v))
#define ossl_ssl_set_sync_close(o,v) rb_iv_set((o),"@sync_close",(v))
#define ossl_ssl_set_x509(o,v) rb_iv_set((o),"@x509",(v))
#define ossl_ssl_set_key(o,v) rb_iv_set((o),"@key",(v))
#define ossl_ssl_set_tmp_dh(o,v) rb_iv_set((o),"@tmp_dh",(v))
static const char *ossl_ssl_attr_readers[] = { "io", "context", };
static const char *ossl_ssl_attrs[] = {
#ifdef HAVE_SSL_SET_TLSEXT_HOST_NAME
"hostname",
#endif
"sync_close",
};
ID ID_callback_state;
/*
* SSLContext class
*/
struct {
const char *name;
SSL_METHOD *(*func)(void);
} ossl_ssl_method_tab[] = {
#define OSSL_SSL_METHOD_ENTRY(name) { #name, (SSL_METHOD *(*)(void))name##_method }
OSSL_SSL_METHOD_ENTRY(TLSv1),
OSSL_SSL_METHOD_ENTRY(TLSv1_server),
OSSL_SSL_METHOD_ENTRY(TLSv1_client),
#if defined(HAVE_SSLV2_METHOD) && defined(HAVE_SSLV2_SERVER_METHOD) && \
defined(HAVE_SSLV2_CLIENT_METHOD)
OSSL_SSL_METHOD_ENTRY(SSLv2),
OSSL_SSL_METHOD_ENTRY(SSLv2_server),
OSSL_SSL_METHOD_ENTRY(SSLv2_client),
#endif
OSSL_SSL_METHOD_ENTRY(SSLv3),
OSSL_SSL_METHOD_ENTRY(SSLv3_server),
OSSL_SSL_METHOD_ENTRY(SSLv3_client),
OSSL_SSL_METHOD_ENTRY(SSLv23),
OSSL_SSL_METHOD_ENTRY(SSLv23_server),
OSSL_SSL_METHOD_ENTRY(SSLv23_client),
#undef OSSL_SSL_METHOD_ENTRY
};
int ossl_ssl_ex_vcb_idx;
int ossl_ssl_ex_store_p;
int ossl_ssl_ex_ptr_idx;
int ossl_ssl_ex_client_cert_cb_idx;
int ossl_ssl_ex_tmp_dh_callback_idx;
static void
ossl_sslctx_free(SSL_CTX *ctx)
{
if(ctx && SSL_CTX_get_ex_data(ctx, ossl_ssl_ex_store_p)== (void*)1)
ctx->cert_store = NULL;
SSL_CTX_free(ctx);
}
static VALUE
ossl_sslctx_s_alloc(VALUE klass)
{
SSL_CTX *ctx;
long mode = SSL_MODE_ENABLE_PARTIAL_WRITE;
#ifdef SSL_MODE_RELEASE_BUFFERS
mode |= SSL_MODE_RELEASE_BUFFERS;
#endif
ctx = SSL_CTX_new(SSLv23_method());
if (!ctx) {
ossl_raise(eSSLError, "SSL_CTX_new");
}
SSL_CTX_set_mode(ctx, mode);
return Data_Wrap_Struct(klass, 0, ossl_sslctx_free, ctx);
}
/*
* call-seq:
* ctx.ssl_version = :TLSv1
* ctx.ssl_version = "SSLv23_client"
*
* You can get a list of valid versions with OpenSSL::SSL::SSLContext::METHODS
*/
static VALUE
ossl_sslctx_set_ssl_version(VALUE self, VALUE ssl_method)
{
SSL_METHOD *method = NULL;
const char *s;
int i;
SSL_CTX *ctx;
if(TYPE(ssl_method) == T_SYMBOL)
s = rb_id2name(SYM2ID(ssl_method));
else
s = StringValuePtr(ssl_method);
for (i = 0; i < numberof(ossl_ssl_method_tab); i++) {
if (strcmp(ossl_ssl_method_tab[i].name, s) == 0) {
method = ossl_ssl_method_tab[i].func();
break;
}
}
if (!method) {
ossl_raise(rb_eArgError, "unknown SSL method `%s'.", s);
}
Data_Get_Struct(self, SSL_CTX, ctx);
if (SSL_CTX_set_ssl_version(ctx, method) != 1) {
ossl_raise(eSSLError, "SSL_CTX_set_ssl_version");
}
return ssl_method;
}
/*
* call-seq:
* SSLContext.new => ctx
* SSLContext.new(:TLSv1) => ctx
* SSLContext.new("SSLv23_client") => ctx
*
* You can get a list of valid methods with OpenSSL::SSL::SSLContext::METHODS
*/
static VALUE
ossl_sslctx_initialize(int argc, VALUE *argv, VALUE self)
{
VALUE ssl_method;
int i;
for(i = 0; i < numberof(ossl_sslctx_attrs); i++){
char buf[32];
snprintf(buf, sizeof(buf), "@%s", ossl_sslctx_attrs[i]);
rb_iv_set(self, buf, Qnil);
}
if (rb_scan_args(argc, argv, "01", &ssl_method) == 0){
return self;
}
ossl_sslctx_set_ssl_version(self, ssl_method);
return self;
}
static VALUE
ossl_call_client_cert_cb(VALUE obj)
{
VALUE cb, ary, cert, key;
SSL *ssl;
Data_Get_Struct(obj, SSL, ssl);
cb = (VALUE)SSL_get_ex_data(ssl, ossl_ssl_ex_client_cert_cb_idx);
if (NIL_P(cb)) return Qfalse;
ary = rb_funcall(cb, rb_intern("call"), 1, obj);
Check_Type(ary, T_ARRAY);
GetX509CertPtr(cert = rb_ary_entry(ary, 0));
GetPKeyPtr(key = rb_ary_entry(ary, 1));
ossl_ssl_set_x509(obj, cert);
ossl_ssl_set_key(obj, key);
return Qtrue;
}
static int
ossl_client_cert_cb(SSL *ssl, X509 **x509, EVP_PKEY **pkey)
{
VALUE obj, success;
obj = (VALUE)SSL_get_ex_data(ssl, ossl_ssl_ex_ptr_idx);
success = rb_protect((VALUE(*)_((VALUE)))ossl_call_client_cert_cb,
obj, NULL);
if (!RTEST(success)) return 0;
*x509 = DupX509CertPtr(ossl_ssl_get_x509(obj));
*pkey = DupPKeyPtr(ossl_ssl_get_key(obj));
return 1;
}
#if !defined(OPENSSL_NO_DH)
static VALUE
ossl_call_tmp_dh_callback(VALUE *args)
{
SSL *ssl;
VALUE cb, dh;
EVP_PKEY *pkey;
Data_Get_Struct(args[0], SSL, ssl);
cb = (VALUE)SSL_get_ex_data(ssl, ossl_ssl_ex_tmp_dh_callback_idx);
if (NIL_P(cb)) return Qfalse;
dh = rb_funcall(cb, rb_intern("call"), 3, args[0], args[1], args[2]);
pkey = GetPKeyPtr(dh);
if (EVP_PKEY_type(pkey->type) != EVP_PKEY_DH) return Qfalse;
ossl_ssl_set_tmp_dh(args[0], dh);
return Qtrue;
}
static DH*
ossl_tmp_dh_callback(SSL *ssl, int is_export, int keylength)
{
VALUE args[3], success;
args[0] = (VALUE)SSL_get_ex_data(ssl, ossl_ssl_ex_ptr_idx);
args[1] = INT2FIX(is_export);
args[2] = INT2FIX(keylength);
success = rb_protect((VALUE(*)_((VALUE)))ossl_call_tmp_dh_callback,
(VALUE)args, NULL);
if (!RTEST(success)) return NULL;
return GetPKeyPtr(ossl_ssl_get_tmp_dh(args[0]))->pkey.dh;
}
static DH*
ossl_default_tmp_dh_callback(SSL *ssl, int is_export, int keylength)
{
rb_warning("using default DH parameters.");
switch(keylength){
case 512:
return OSSL_DEFAULT_DH_512;
case 1024:
return OSSL_DEFAULT_DH_1024;
}
return NULL;
}
#endif /* OPENSSL_NO_DH */
static int
ossl_ssl_verify_callback(int preverify_ok, X509_STORE_CTX *ctx)
{
VALUE cb;
SSL *ssl;
ssl = X509_STORE_CTX_get_ex_data(ctx, SSL_get_ex_data_X509_STORE_CTX_idx());
cb = (VALUE)SSL_get_ex_data(ssl, ossl_ssl_ex_vcb_idx);
X509_STORE_CTX_set_ex_data(ctx, ossl_verify_cb_idx, (void*)cb);
return ossl_verify_cb(preverify_ok, ctx);
}
static VALUE
ossl_call_session_get_cb(VALUE ary)
{
VALUE ssl_obj, sslctx_obj, cb;
Check_Type(ary, T_ARRAY);
ssl_obj = rb_ary_entry(ary, 0);
sslctx_obj = rb_iv_get(ssl_obj, "@context");
if (NIL_P(sslctx_obj)) return Qnil;
cb = rb_iv_get(sslctx_obj, "@session_get_cb");
if (NIL_P(cb)) return Qnil;
return rb_funcall(cb, rb_intern("call"), 1, ary);
}
/* this method is currently only called for servers (in OpenSSL <= 0.9.8e) */
static SSL_SESSION *
ossl_sslctx_session_get_cb(SSL *ssl, unsigned char *buf, int len, int *copy)
{
VALUE ary, ssl_obj, ret_obj;
SSL_SESSION *sess;
void *ptr;
int state = 0;
OSSL_Debug("SSL SESSION get callback entered");
if ((ptr = SSL_get_ex_data(ssl, ossl_ssl_ex_ptr_idx)) == NULL)
return NULL;
ssl_obj = (VALUE)ptr;
ary = rb_ary_new2(2);
rb_ary_push(ary, ssl_obj);
rb_ary_push(ary, rb_str_new((const char *)buf, len));
ret_obj = rb_protect((VALUE(*)_((VALUE)))ossl_call_session_get_cb, ary, &state);
if (state) {
rb_ivar_set(ssl_obj, ID_callback_state, INT2NUM(state));
return NULL;
}
if (!rb_obj_is_instance_of(ret_obj, cSSLSession))
return NULL;
SafeGetSSLSession(ret_obj, sess);
*copy = 1;
return sess;
}
static VALUE
ossl_call_session_new_cb(VALUE ary)
{
VALUE ssl_obj, sslctx_obj, cb;
Check_Type(ary, T_ARRAY);
ssl_obj = rb_ary_entry(ary, 0);
sslctx_obj = rb_iv_get(ssl_obj, "@context");
if (NIL_P(sslctx_obj)) return Qnil;
cb = rb_iv_get(sslctx_obj, "@session_new_cb");
if (NIL_P(cb)) return Qnil;
return rb_funcall(cb, rb_intern("call"), 1, ary);
}
/* return 1 normal. return 0 removes the session */
static int
ossl_sslctx_session_new_cb(SSL *ssl, SSL_SESSION *sess)
{
VALUE ary, ssl_obj, sess_obj;
void *ptr;
int state = 0;
OSSL_Debug("SSL SESSION new callback entered");
if ((ptr = SSL_get_ex_data(ssl, ossl_ssl_ex_ptr_idx)) == NULL)
return 1;
ssl_obj = (VALUE)ptr;
sess_obj = rb_obj_alloc(cSSLSession);
CRYPTO_add(&sess->references, 1, CRYPTO_LOCK_SSL_SESSION);
DATA_PTR(sess_obj) = sess;
ary = rb_ary_new2(2);
rb_ary_push(ary, ssl_obj);
rb_ary_push(ary, sess_obj);
rb_protect((VALUE(*)_((VALUE)))ossl_call_session_new_cb, ary, &state);
if (state) {
rb_ivar_set(ssl_obj, ID_callback_state, INT2NUM(state));
}
/*
* return 0 which means to OpenSSL that the the session is still
* valid (since we created Ruby Session object) and was not freed by us
* with SSL_SESSION_free(). Call SSLContext#remove_session(sess) in
* session_get_cb block if you don't want OpenSSL to cache the session
* internally.
*/
return 0;
}
static VALUE
ossl_call_session_remove_cb(VALUE ary)
{
VALUE sslctx_obj, cb;
Check_Type(ary, T_ARRAY);
sslctx_obj = rb_ary_entry(ary, 0);
cb = rb_iv_get(sslctx_obj, "@session_remove_cb");
if (NIL_P(cb)) return Qnil;
return rb_funcall(cb, rb_intern("call"), 1, ary);
}
static void
ossl_sslctx_session_remove_cb(SSL_CTX *ctx, SSL_SESSION *sess)
{
VALUE ary, sslctx_obj, sess_obj;
void *ptr;
int state = 0;
OSSL_Debug("SSL SESSION remove callback entered");
if ((ptr = SSL_CTX_get_ex_data(ctx, ossl_ssl_ex_ptr_idx)) == NULL)
return;
sslctx_obj = (VALUE)ptr;
sess_obj = rb_obj_alloc(cSSLSession);
CRYPTO_add(&sess->references, 1, CRYPTO_LOCK_SSL_SESSION);
DATA_PTR(sess_obj) = sess;
ary = rb_ary_new2(2);
rb_ary_push(ary, sslctx_obj);
rb_ary_push(ary, sess_obj);
rb_protect((VALUE(*)_((VALUE)))ossl_call_session_remove_cb, ary, &state);
if (state) {
/*
the SSL_CTX is frozen, nowhere to save state.
there is no common accessor method to check it either.
rb_ivar_set(sslctx_obj, ID_callback_state, INT2NUM(state));
*/
}
}
static VALUE
ossl_sslctx_add_extra_chain_cert_i(VALUE i, VALUE arg)
{
X509 *x509;
SSL_CTX *ctx;
Data_Get_Struct(arg, SSL_CTX, ctx);
x509 = DupX509CertPtr(i);
if(!SSL_CTX_add_extra_chain_cert(ctx, x509)){
ossl_raise(eSSLError, NULL);
}
return i;
}
static VALUE ossl_sslctx_setup(VALUE self);
#ifdef HAVE_SSL_SET_TLSEXT_HOST_NAME
static VALUE
ossl_call_servername_cb(VALUE ary)
{
VALUE ssl_obj, sslctx_obj, cb, ret_obj;
Check_Type(ary, T_ARRAY);
ssl_obj = rb_ary_entry(ary, 0);
sslctx_obj = rb_iv_get(ssl_obj, "@context");
if (NIL_P(sslctx_obj)) return Qnil;
cb = rb_iv_get(sslctx_obj, "@servername_cb");
if (NIL_P(cb)) return Qnil;
ret_obj = rb_funcall(cb, rb_intern("call"), 1, ary);
if (rb_obj_is_kind_of(ret_obj, cSSLContext)) {
SSL *ssl;
SSL_CTX *ctx2;
ossl_sslctx_setup(ret_obj);
Data_Get_Struct(ssl_obj, SSL, ssl);
Data_Get_Struct(ret_obj, SSL_CTX, ctx2);
SSL_set_SSL_CTX(ssl, ctx2);
} else if (!NIL_P(ret_obj)) {
ossl_raise(rb_eArgError, "servername_cb must return an OpenSSL::SSL::SSLContext object or nil");
}
return ret_obj;
}
static int
ssl_servername_cb(SSL *ssl, int *ad, void *arg)
{
VALUE ary, ssl_obj;
void *ptr;
int state = 0;
const char *servername = SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name);
if (!servername)
return SSL_TLSEXT_ERR_OK;
if ((ptr = SSL_get_ex_data(ssl, ossl_ssl_ex_ptr_idx)) == NULL)
return SSL_TLSEXT_ERR_ALERT_FATAL;
ssl_obj = (VALUE)ptr;
ary = rb_ary_new2(2);
rb_ary_push(ary, ssl_obj);
rb_ary_push(ary, rb_str_new2(servername));
rb_protect((VALUE(*)_((VALUE)))ossl_call_servername_cb, ary, &state);
if (state) {
rb_ivar_set(ssl_obj, ID_callback_state, INT2NUM(state));
return SSL_TLSEXT_ERR_ALERT_FATAL;
}
return SSL_TLSEXT_ERR_OK;
}
#endif
/*
* call-seq:
* ctx.setup => Qtrue # first time
* ctx.setup => nil # thereafter
*
* This method is called automatically when a new SSLSocket is created.
* Normally you do not need to call this method (unless you are writing an
* extension in C).
*/
static VALUE
ossl_sslctx_setup(VALUE self)
{
SSL_CTX *ctx;
X509 *cert = NULL, *client_ca = NULL;
X509_STORE *store;
EVP_PKEY *key = NULL;
char *ca_path = NULL, *ca_file = NULL;
int i, verify_mode;
VALUE val;
if(OBJ_FROZEN(self)) return Qnil;
Data_Get_Struct(self, SSL_CTX, ctx);
#if !defined(OPENSSL_NO_DH)
if (RTEST(ossl_sslctx_get_tmp_dh_cb(self))){
SSL_CTX_set_tmp_dh_callback(ctx, ossl_tmp_dh_callback);
}
else{
SSL_CTX_set_tmp_dh_callback(ctx, ossl_default_tmp_dh_callback);
}
#endif
SSL_CTX_set_ex_data(ctx, ossl_ssl_ex_ptr_idx, (void*)self);
val = ossl_sslctx_get_cert_store(self);
if(!NIL_P(val)){
/*
* WORKAROUND:
* X509_STORE can count references, but
* X509_STORE_free() doesn't care it.
* So we won't increment it but mark it by ex_data.
*/
store = GetX509StorePtr(val); /* NO NEED TO DUP */
SSL_CTX_set_cert_store(ctx, store);
SSL_CTX_set_ex_data(ctx, ossl_ssl_ex_store_p, (void*)1);
}
val = ossl_sslctx_get_extra_cert(self);
if(!NIL_P(val)){
rb_block_call(val, rb_intern("each"), 0, 0, ossl_sslctx_add_extra_chain_cert_i, self);
}
/* private key may be bundled in certificate file. */
val = ossl_sslctx_get_cert(self);
cert = NIL_P(val) ? NULL : GetX509CertPtr(val); /* NO DUP NEEDED */
val = ossl_sslctx_get_key(self);
key = NIL_P(val) ? NULL : GetPKeyPtr(val); /* NO DUP NEEDED */
if (cert && key) {
if (!SSL_CTX_use_certificate(ctx, cert)) {
/* Adds a ref => Safe to FREE */
ossl_raise(eSSLError, "SSL_CTX_use_certificate");
}
if (!SSL_CTX_use_PrivateKey(ctx, key)) {
/* Adds a ref => Safe to FREE */
ossl_raise(eSSLError, "SSL_CTX_use_PrivateKey");
}
if (!SSL_CTX_check_private_key(ctx)) {
ossl_raise(eSSLError, "SSL_CTX_check_private_key");
}
}
val = ossl_sslctx_get_client_ca(self);
if(!NIL_P(val)){
if(TYPE(val) == T_ARRAY){
for(i = 0; i < RARRAY_LEN(val); i++){
client_ca = GetX509CertPtr(RARRAY_PTR(val)[i]);
if (!SSL_CTX_add_client_CA(ctx, client_ca)){
/* Copies X509_NAME => FREE it. */
ossl_raise(eSSLError, "SSL_CTX_add_client_CA");
}
}
}
else{
client_ca = GetX509CertPtr(val); /* NO DUP NEEDED. */
if (!SSL_CTX_add_client_CA(ctx, client_ca)){
/* Copies X509_NAME => FREE it. */
ossl_raise(eSSLError, "SSL_CTX_add_client_CA");
}
}
}
val = ossl_sslctx_get_ca_file(self);
ca_file = NIL_P(val) ? NULL : StringValuePtr(val);
val = ossl_sslctx_get_ca_path(self);
ca_path = NIL_P(val) ? NULL : StringValuePtr(val);
if(ca_file || ca_path){
if (!SSL_CTX_load_verify_locations(ctx, ca_file, ca_path))
rb_warning("can't set verify locations");
}
val = ossl_sslctx_get_verify_mode(self);
verify_mode = NIL_P(val) ? SSL_VERIFY_NONE : NUM2INT(val);
SSL_CTX_set_verify(ctx, verify_mode, ossl_ssl_verify_callback);
if (RTEST(ossl_sslctx_get_client_cert_cb(self)))
SSL_CTX_set_client_cert_cb(ctx, ossl_client_cert_cb);
val = ossl_sslctx_get_timeout(self);
if(!NIL_P(val)) SSL_CTX_set_timeout(ctx, NUM2LONG(val));
val = ossl_sslctx_get_verify_dep(self);
if(!NIL_P(val)) SSL_CTX_set_verify_depth(ctx, NUM2INT(val));
val = ossl_sslctx_get_options(self);
if(!NIL_P(val)) {
SSL_CTX_set_options(ctx, NUM2LONG(val));
} else {
SSL_CTX_set_options(ctx, SSL_OP_ALL);
}
rb_obj_freeze(self);
val = ossl_sslctx_get_sess_id_ctx(self);
if (!NIL_P(val)){
StringValue(val);
if (!SSL_CTX_set_session_id_context(ctx, (unsigned char *)RSTRING_PTR(val),
RSTRING_LENINT(val))){
ossl_raise(eSSLError, "SSL_CTX_set_session_id_context");
}
}
if (RTEST(rb_iv_get(self, "@session_get_cb"))) {
SSL_CTX_sess_set_get_cb(ctx, ossl_sslctx_session_get_cb);
OSSL_Debug("SSL SESSION get callback added");
}
if (RTEST(rb_iv_get(self, "@session_new_cb"))) {
SSL_CTX_sess_set_new_cb(ctx, ossl_sslctx_session_new_cb);
OSSL_Debug("SSL SESSION new callback added");
}
if (RTEST(rb_iv_get(self, "@session_remove_cb"))) {
SSL_CTX_sess_set_remove_cb(ctx, ossl_sslctx_session_remove_cb);
OSSL_Debug("SSL SESSION remove callback added");
}
#ifdef HAVE_SSL_SET_TLSEXT_HOST_NAME
val = rb_iv_get(self, "@servername_cb");
if (!NIL_P(val)) {
SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
OSSL_Debug("SSL TLSEXT servername callback added");
}
#endif
return Qtrue;
}
static VALUE
ossl_ssl_cipher_to_ary(SSL_CIPHER *cipher)
{
VALUE ary;
int bits, alg_bits;
ary = rb_ary_new2(4);
rb_ary_push(ary, rb_str_new2(SSL_CIPHER_get_name(cipher)));
rb_ary_push(ary, rb_str_new2(SSL_CIPHER_get_version(cipher)));
bits = SSL_CIPHER_get_bits(cipher, &alg_bits);
rb_ary_push(ary, INT2FIX(bits));
rb_ary_push(ary, INT2FIX(alg_bits));
return ary;
}
/*
* call-seq:
* ctx.ciphers => [[name, version, bits, alg_bits], ...]
*
* The list of ciphers configured for this context.
*/
static VALUE
ossl_sslctx_get_ciphers(VALUE self)
{
SSL_CTX *ctx;
STACK_OF(SSL_CIPHER) *ciphers;
SSL_CIPHER *cipher;
VALUE ary;
int i, num;
Data_Get_Struct(self, SSL_CTX, ctx);
if(!ctx){
rb_warning("SSL_CTX is not initialized.");
return Qnil;
}
ciphers = ctx->cipher_list;
if (!ciphers)
return rb_ary_new();
num = sk_SSL_CIPHER_num(ciphers);
ary = rb_ary_new2(num);
for(i = 0; i < num; i++){
cipher = sk_SSL_CIPHER_value(ciphers, i);
rb_ary_push(ary, ossl_ssl_cipher_to_ary(cipher));
}
return ary;
}
/*
* call-seq:
* ctx.ciphers = "cipher1:cipher2:..."
* ctx.ciphers = [name, ...]
* ctx.ciphers = [[name, version, bits, alg_bits], ...]
*
* Sets the list of available ciphers for this context. Note in a server
* context some ciphers require the appropriate certificates. For example, an
* RSA cipher can only be chosen when an RSA certificate is available.
*
* See also OpenSSL::Cipher and OpenSSL::Cipher::ciphers
*/
static VALUE
ossl_sslctx_set_ciphers(VALUE self, VALUE v)
{
SSL_CTX *ctx;
VALUE str, elem;
int i;
rb_check_frozen(self);
if (NIL_P(v))
return v;
else if (TYPE(v) == T_ARRAY) {
str = rb_str_new(0, 0);
for (i = 0; i < RARRAY_LEN(v); i++) {
elem = rb_ary_entry(v, i);
if (TYPE(elem) == T_ARRAY) elem = rb_ary_entry(elem, 0);
elem = rb_String(elem);
rb_str_append(str, elem);
if (i < RARRAY_LEN(v)-1) rb_str_cat2(str, ":");
}
} else {
str = v;
StringValue(str);
}
Data_Get_Struct(self, SSL_CTX, ctx);
if(!ctx){
ossl_raise(eSSLError, "SSL_CTX is not initialized.");
return Qnil;
}
if (!SSL_CTX_set_cipher_list(ctx, RSTRING_PTR(str))) {
ossl_raise(eSSLError, "SSL_CTX_set_cipher_list");
}
return v;
}
/*
* call-seq:
* ctx.session_add(session) -> true | false
*
* Adds +session+ to the session cache
*/
static VALUE
ossl_sslctx_session_add(VALUE self, VALUE arg)
{
SSL_CTX *ctx;
SSL_SESSION *sess;
Data_Get_Struct(self, SSL_CTX, ctx);
SafeGetSSLSession(arg, sess);
return SSL_CTX_add_session(ctx, sess) == 1 ? Qtrue : Qfalse;
}
/*
* call-seq:
* ctx.session_remove(session) -> true | false
*
* Removes +session+ from the session cache
*/
static VALUE
ossl_sslctx_session_remove(VALUE self, VALUE arg)
{
SSL_CTX *ctx;
SSL_SESSION *sess;
Data_Get_Struct(self, SSL_CTX, ctx);
SafeGetSSLSession(arg, sess);
return SSL_CTX_remove_session(ctx, sess) == 1 ? Qtrue : Qfalse;
}
/*
* call-seq:
* ctx.session_cache_mode -> Integer
*
* The current session cache mode.
*/
static VALUE
ossl_sslctx_get_session_cache_mode(VALUE self)
{
SSL_CTX *ctx;
Data_Get_Struct(self, SSL_CTX, ctx);
return LONG2NUM(SSL_CTX_get_session_cache_mode(ctx));
}
/*
* call-seq:
* ctx.session_cache_mode=(integer) -> Integer
*
* Sets the SSL session cache mode. Bitwise-or together the desired
* SESSION_CACHE_* constants to set. See SSL_CTX_set_session_cache_mode(3) for
* details.
*/
static VALUE
ossl_sslctx_set_session_cache_mode(VALUE self, VALUE arg)
{
SSL_CTX *ctx;
Data_Get_Struct(self, SSL_CTX, ctx);
SSL_CTX_set_session_cache_mode(ctx, NUM2LONG(arg));
return arg;
}
/*
* call-seq:
* ctx.session_cache_size -> Integer
*
* Returns the current session cache size. Zero is used to represent an
* unlimited cache size.
*/
static VALUE
ossl_sslctx_get_session_cache_size(VALUE self)
{
SSL_CTX *ctx;
Data_Get_Struct(self, SSL_CTX, ctx);
return LONG2NUM(SSL_CTX_sess_get_cache_size(ctx));
}
/*
* call-seq:
* ctx.session_cache_size=(integer) -> Integer
*
* Sets the session cache size. Returns the previously valid session cache
* size. Zero is used to represent an unlimited session cache size.
*/
static VALUE
ossl_sslctx_set_session_cache_size(VALUE self, VALUE arg)
{
SSL_CTX *ctx;
Data_Get_Struct(self, SSL_CTX, ctx);
SSL_CTX_sess_set_cache_size(ctx, NUM2LONG(arg));
return arg;
}
/*
* call-seq:
* ctx.session_cache_stats -> Hash
*
* Returns a Hash containing the following keys:
*
* :accept:: Number of started SSL/TLS handshakes in server mode
* :accept_good:: Number of established SSL/TLS sessions in server mode
* :accept_renegotiate:: Number of start renegotiations in server mode
* :cache_full:: Number of sessions that were removed due to cache overflow
* :cache_hits:: Number of successfully reused connections
* :cache_misses:: Number of sessions proposed by clients that were not found
* in the cache
* :cache_num:: Number of sessions in the internal session cache
* :cb_hits:: Number of sessions retrieved from the external cache in server
* mode
* :connect:: Number of started SSL/TLS handshakes in client mode
* :connect_good:: Number of established SSL/TLS sessions in client mode
* :connect_renegotiate:: Number of start renegotiations in client mode
* :timeouts:: Number of sessions proposed by clients that were found in the
* cache but had expired due to timeouts
*/
static VALUE
ossl_sslctx_get_session_cache_stats(VALUE self)
{
SSL_CTX *ctx;
VALUE hash;
Data_Get_Struct(self, SSL_CTX, ctx);
hash = rb_hash_new();
rb_hash_aset(hash, ID2SYM(rb_intern("cache_num")), LONG2NUM(SSL_CTX_sess_number(ctx)));
rb_hash_aset(hash, ID2SYM(rb_intern("connect")), LONG2NUM(SSL_CTX_sess_connect(ctx)));
rb_hash_aset(hash, ID2SYM(rb_intern("connect_good")), LONG2NUM(SSL_CTX_sess_connect_good(ctx)));
rb_hash_aset(hash, ID2SYM(rb_intern("connect_renegotiate")), LONG2NUM(SSL_CTX_sess_connect_renegotiate(ctx)));
rb_hash_aset(hash, ID2SYM(rb_intern("accept")), LONG2NUM(SSL_CTX_sess_accept(ctx)));
rb_hash_aset(hash, ID2SYM(rb_intern("accept_good")), LONG2NUM(SSL_CTX_sess_accept_good(ctx)));
rb_hash_aset(hash, ID2SYM(rb_intern("accept_renegotiate")), LONG2NUM(SSL_CTX_sess_accept_renegotiate(ctx)));
rb_hash_aset(hash, ID2SYM(rb_intern("cache_hits")), LONG2NUM(SSL_CTX_sess_hits(ctx)));
rb_hash_aset(hash, ID2SYM(rb_intern("cb_hits")), LONG2NUM(SSL_CTX_sess_cb_hits(ctx)));
rb_hash_aset(hash, ID2SYM(rb_intern("cache_misses")), LONG2NUM(SSL_CTX_sess_misses(ctx)));
rb_hash_aset(hash, ID2SYM(rb_intern("cache_full")), LONG2NUM(SSL_CTX_sess_cache_full(ctx)));
rb_hash_aset(hash, ID2SYM(rb_intern("timeouts")), LONG2NUM(SSL_CTX_sess_timeouts(ctx)));
return hash;
}
/*
* call-seq:
* ctx.flush_sessions(time | nil) -> self
*
* Removes sessions in the internal cache that have expired at +time+.
*/
static VALUE
ossl_sslctx_flush_sessions(int argc, VALUE *argv, VALUE self)
{
VALUE arg1;
SSL_CTX *ctx;
time_t tm = 0;
rb_scan_args(argc, argv, "01", &arg1);
Data_Get_Struct(self, SSL_CTX, ctx);
if (NIL_P(arg1)) {
tm = time(0);
} else if (rb_obj_is_instance_of(arg1, rb_cTime)) {
tm = NUM2LONG(rb_funcall(arg1, rb_intern("to_i"), 0));
} else {
ossl_raise(rb_eArgError, "arg must be Time or nil");
}
SSL_CTX_flush_sessions(ctx, (long)tm);
return self;
}
/*
* SSLSocket class
*/
static void
ossl_ssl_shutdown(SSL *ssl)
{
int i, rc;
if (ssl) {
/* 4 is from SSL_smart_shutdown() of mod_ssl.c (v2.2.19) */
/* It says max 2x pending + 2x data = 4 */
for (i = 0; i < 4; ++i) {
/*
* Ignore the case SSL_shutdown returns -1. Empty handshake_func
* must not happen.
*/
if (rc = SSL_shutdown(ssl))
break;
}
ERR_clear_error();
SSL_clear(ssl);
}
}
static void
ossl_ssl_free(SSL *ssl)
{
ossl_ssl_shutdown(ssl);
SSL_free(ssl);
}
static VALUE
ossl_ssl_s_alloc(VALUE klass)
{
return Data_Wrap_Struct(klass, 0, ossl_ssl_free, NULL);
}
/*
* call-seq:
* SSLSocket.new(io) => aSSLSocket
* SSLSocket.new(io, ctx) => aSSLSocket
*
* Creates a new SSL socket from +io+ which must be a real ruby object (not an
* IO-like object that responds to read/write.
*
* If +ctx+ is provided the SSL Sockets initial params will be taken from
* the context.
*
* The OpenSSL::Buffering module provides additional IO methods.
*
* This method will freeze the SSLContext if one is provided;
* however, session management is still allowed in the frozen SSLContext.
*/
static VALUE
ossl_ssl_initialize(int argc, VALUE *argv, VALUE self)
{
VALUE io, ctx;
if (rb_scan_args(argc, argv, "11", &io, &ctx) == 1) {
ctx = rb_funcall(cSSLContext, rb_intern("new"), 0);
}
OSSL_Check_Kind(ctx, cSSLContext);
Check_Type(io, T_FILE);
ossl_ssl_set_io(self, io);
ossl_ssl_set_ctx(self, ctx);
ossl_ssl_set_sync_close(self, Qfalse);
ossl_sslctx_setup(ctx);
rb_iv_set(self, "@hostname", Qnil);
rb_call_super(0, 0);
return self;
}
static VALUE
ossl_ssl_setup(VALUE self)
{
VALUE io, v_ctx, cb;
SSL_CTX *ctx;
SSL *ssl;
rb_io_t *fptr;
Data_Get_Struct(self, SSL, ssl);
if(!ssl){
#ifdef HAVE_SSL_SET_TLSEXT_HOST_NAME
VALUE hostname = rb_iv_get(self, "@hostname");
#endif
v_ctx = ossl_ssl_get_ctx(self);
Data_Get_Struct(v_ctx, SSL_CTX, ctx);
ssl = SSL_new(ctx);
if (!ssl) {
ossl_raise(eSSLError, "SSL_new");
}
DATA_PTR(self) = ssl;
#ifdef HAVE_SSL_SET_TLSEXT_HOST_NAME
if (!NIL_P(hostname)) {
if (SSL_set_tlsext_host_name(ssl, StringValuePtr(hostname)) != 1)
ossl_raise(eSSLError, "SSL_set_tlsext_host_name");
}
#endif
io = ossl_ssl_get_io(self);
GetOpenFile(io, fptr);
rb_io_check_readable(fptr);
rb_io_check_writable(fptr);
SSL_set_fd(ssl, TO_SOCKET(FPTR_TO_FD(fptr)));
SSL_set_ex_data(ssl, ossl_ssl_ex_ptr_idx, (void*)self);
cb = ossl_sslctx_get_verify_cb(v_ctx);
SSL_set_ex_data(ssl, ossl_ssl_ex_vcb_idx, (void*)cb);
cb = ossl_sslctx_get_client_cert_cb(v_ctx);
SSL_set_ex_data(ssl, ossl_ssl_ex_client_cert_cb_idx, (void*)cb);
cb = ossl_sslctx_get_tmp_dh_cb(v_ctx);
SSL_set_ex_data(ssl, ossl_ssl_ex_tmp_dh_callback_idx, (void*)cb);
}
return Qtrue;
}
#ifdef _WIN32
#define ssl_get_error(ssl, ret) (errno = rb_w32_map_errno(WSAGetLastError()), SSL_get_error((ssl), (ret)))
#else
#define ssl_get_error(ssl, ret) SSL_get_error((ssl), (ret))
#endif
static void
write_would_block(int nonblock)
{
if (nonblock) {
VALUE exc = ossl_exc_new(eSSLError, "write would block");
rb_extend_object(exc, rb_mWaitWritable);
rb_exc_raise(exc);
}
}
static void
read_would_block(int nonblock)
{
if (nonblock) {
VALUE exc = ossl_exc_new(eSSLError, "read would block");
rb_extend_object(exc, rb_mWaitReadable);
rb_exc_raise(exc);
}
}
static VALUE
ossl_start_ssl(VALUE self, int (*func)(), const char *funcname, int nonblock)
{
SSL *ssl;
rb_io_t *fptr;
int ret, ret2;
VALUE cb_state;
rb_ivar_set(self, ID_callback_state, Qnil);
Data_Get_Struct(self, SSL, ssl);
GetOpenFile(ossl_ssl_get_io(self), fptr);
for(;;){
ret = func(ssl);
cb_state = rb_ivar_get(self, ID_callback_state);
if (!NIL_P(cb_state))
rb_jump_tag(NUM2INT(cb_state));
if (ret > 0)
break;
switch((ret2 = ssl_get_error(ssl, ret))){
case SSL_ERROR_WANT_WRITE:
write_would_block(nonblock);
rb_io_wait_writable(FPTR_TO_FD(fptr));
continue;
case SSL_ERROR_WANT_READ:
read_would_block(nonblock);
rb_io_wait_readable(FPTR_TO_FD(fptr));
continue;
case SSL_ERROR_SYSCALL:
if (errno) rb_sys_fail(funcname);
ossl_raise(eSSLError, "%s SYSCALL returned=%d errno=%d state=%s", funcname, ret2, errno, SSL_state_string_long(ssl));
default:
ossl_raise(eSSLError, "%s returned=%d errno=%d state=%s", funcname, ret2, errno, SSL_state_string_long(ssl));
}
}
return self;
}
/*
* call-seq:
* ssl.connect => self
*
* Initiates an SSL/TLS handshake with a server. The handshake may be started
* after unencrypted data has been sent over the socket.
*/
static VALUE
ossl_ssl_connect(VALUE self)
{
ossl_ssl_setup(self);
return ossl_start_ssl(self, SSL_connect, "SSL_connect", 0);
}
/*
* call-seq:
* ssl.connect_nonblock => self
*
* Initiates the SSL/TLS handshake as a client in non-blocking manner.
*
* # emulates blocking connect
* begin
* ssl.connect_nonblock
* rescue IO::WaitReadable
* IO.select([s2])
* retry
* rescue IO::WaitWritable
* IO.select(nil, [s2])
* retry
* end
*
*/
static VALUE
ossl_ssl_connect_nonblock(VALUE self)
{
ossl_ssl_setup(self);
return ossl_start_ssl(self, SSL_connect, "SSL_connect", 1);
}
/*
* call-seq:
* ssl.accept => self
*
* Waits for a SSL/TLS client to initiate a handshake. The handshake may be
* started after unencrypted data has been sent over the socket.
*/
static VALUE
ossl_ssl_accept(VALUE self)
{
ossl_ssl_setup(self);
return ossl_start_ssl(self, SSL_accept, "SSL_accept", 0);
}
/*
* call-seq:
* ssl.accept_nonblock => self
*
* Initiates the SSL/TLS handshake as a server in non-blocking manner.
*
* # emulates blocking accept
* begin
* ssl.accept_nonblock
* rescue IO::WaitReadable
* IO.select([s2])
* retry
* rescue IO::WaitWritable
* IO.select(nil, [s2])
* retry
* end
*
*/
static VALUE
ossl_ssl_accept_nonblock(VALUE self)
{
ossl_ssl_setup(self);
return ossl_start_ssl(self, SSL_accept, "SSL_accept", 1);
}
static VALUE
ossl_ssl_read_internal(int argc, VALUE *argv, VALUE self, int nonblock)
{
SSL *ssl;
int ilen, nread = 0;
VALUE len, str;
rb_io_t *fptr;
rb_scan_args(argc, argv, "11", &len, &str);
ilen = NUM2INT(len);
if(NIL_P(str)) str = rb_str_new(0, ilen);
else{
StringValue(str);
rb_str_modify(str);
rb_str_resize(str, ilen);
}
if(ilen == 0) return str;
Data_Get_Struct(self, SSL, ssl);
GetOpenFile(ossl_ssl_get_io(self), fptr);
if (ssl) {
if(!nonblock && SSL_pending(ssl) <= 0)
rb_thread_wait_fd(FPTR_TO_FD(fptr));
for (;;){
nread = SSL_read(ssl, RSTRING_PTR(str), RSTRING_LENINT(str));
switch(ssl_get_error(ssl, nread)){
case SSL_ERROR_NONE:
goto end;
case SSL_ERROR_ZERO_RETURN:
rb_eof_error();
case SSL_ERROR_WANT_WRITE:
write_would_block(nonblock);
rb_io_wait_writable(FPTR_TO_FD(fptr));
continue;
case SSL_ERROR_WANT_READ:
read_would_block(nonblock);
rb_io_wait_readable(FPTR_TO_FD(fptr));
continue;
case SSL_ERROR_SYSCALL:
if(ERR_peek_error() == 0 && nread == 0) rb_eof_error();
rb_sys_fail(0);
default:
ossl_raise(eSSLError, "SSL_read");
}
}
}
else {
ID meth = nonblock ? rb_intern("read_nonblock") : rb_intern("sysread");
rb_warning("SSL session is not started yet.");
return rb_funcall(ossl_ssl_get_io(self), meth, 2, len, str);
}
end:
rb_str_set_len(str, nread);
OBJ_TAINT(str);
return str;
}
/*
* call-seq:
* ssl.sysread(length) => string
* ssl.sysread(length, buffer) => buffer
*
* Reads +length+ bytes from the SSL connection. If a pre-allocated +buffer+
* is provided the data will be written into it.
*/
static VALUE
ossl_ssl_read(int argc, VALUE *argv, VALUE self)
{
return ossl_ssl_read_internal(argc, argv, self, 0);
}
/*
* call-seq:
* ssl.sysread_nonblock(length) => string
* ssl.sysread_nonblock(length, buffer) => buffer
*
* A non-blocking version of #sysread. Raises an SSLError if reading would
* block.
*
* Reads +length+ bytes from the SSL connection. If a pre-allocated +buffer+
* is provided the data will be written into it.
*/
static VALUE
ossl_ssl_read_nonblock(int argc, VALUE *argv, VALUE self)
{
return ossl_ssl_read_internal(argc, argv, self, 1);
}
static VALUE
ossl_ssl_write_internal(VALUE self, VALUE str, int nonblock)
{
SSL *ssl;
int nwrite = 0;
rb_io_t *fptr;
StringValue(str);
Data_Get_Struct(self, SSL, ssl);
GetOpenFile(ossl_ssl_get_io(self), fptr);
if (ssl) {
for (;;){
nwrite = SSL_write(ssl, RSTRING_PTR(str), RSTRING_LENINT(str));
switch(ssl_get_error(ssl, nwrite)){
case SSL_ERROR_NONE:
goto end;
case SSL_ERROR_WANT_WRITE:
write_would_block(nonblock);
rb_io_wait_writable(FPTR_TO_FD(fptr));
continue;
case SSL_ERROR_WANT_READ:
read_would_block(nonblock);
rb_io_wait_readable(FPTR_TO_FD(fptr));
continue;
case SSL_ERROR_SYSCALL:
if (errno) rb_sys_fail(0);
default:
ossl_raise(eSSLError, "SSL_write");
}
}
}
else {
ID id_syswrite = rb_intern("syswrite");
rb_warning("SSL session is not started yet.");
return rb_funcall(ossl_ssl_get_io(self), id_syswrite, 1, str);
}
end:
return INT2NUM(nwrite);
}
/*
* call-seq:
* ssl.syswrite(string) => Integer
*
* Writes +string+ to the SSL connection.
*/
static VALUE
ossl_ssl_write(VALUE self, VALUE str)
{
return ossl_ssl_write_internal(self, str, 0);
}
/*
* call-seq:
* ssl.syswrite_nonblock(string) => Integer
*
* Writes +string+ to the SSL connection in a non-blocking manner. Raises an
* SSLError if writing would block.
*/
static VALUE
ossl_ssl_write_nonblock(VALUE self, VALUE str)
{
return ossl_ssl_write_internal(self, str, 1);
}
/*
* call-seq:
* ssl.sysclose => nil
*
* Shuts down the SSL connection and prepares it for another connection.
*/
static VALUE
ossl_ssl_close(VALUE self)
{
SSL *ssl;
Data_Get_Struct(self, SSL, ssl);
ossl_ssl_shutdown(ssl);
if (RTEST(ossl_ssl_get_sync_close(self)))
rb_funcall(ossl_ssl_get_io(self), rb_intern("close"), 0);
return Qnil;
}
/*
* call-seq:
* ssl.cert => cert or nil
*
* The X509 certificate for this socket endpoint.
*/
static VALUE
ossl_ssl_get_cert(VALUE self)
{
SSL *ssl;
X509 *cert = NULL;
Data_Get_Struct(self, SSL, ssl);
if (!ssl) {
rb_warning("SSL session is not started yet.");
return Qnil;
}
/*
* Is this OpenSSL bug? Should add a ref?
* TODO: Ask for.
*/
cert = SSL_get_certificate(ssl); /* NO DUPs => DON'T FREE. */
if (!cert) {
return Qnil;
}
return ossl_x509_new(cert);
}
/*
* call-seq:
* ssl.peer_cert => cert or nil
*
* The X509 certificate for this socket's peer.
*/
static VALUE
ossl_ssl_get_peer_cert(VALUE self)
{
SSL *ssl;
X509 *cert = NULL;
VALUE obj;
Data_Get_Struct(self, SSL, ssl);
if (!ssl){
rb_warning("SSL session is not started yet.");
return Qnil;
}
cert = SSL_get_peer_certificate(ssl); /* Adds a ref => Safe to FREE. */
if (!cert) {
return Qnil;
}
obj = ossl_x509_new(cert);
X509_free(cert);
return obj;
}
/*
* call-seq:
* ssl.peer_cert_chain => [cert, ...] or nil
*
* The X509 certificate chain for this socket's peer.
*/
static VALUE
ossl_ssl_get_peer_cert_chain(VALUE self)
{
SSL *ssl;
STACK_OF(X509) *chain;
X509 *cert;
VALUE ary;
int i, num;
Data_Get_Struct(self, SSL, ssl);
if(!ssl){
rb_warning("SSL session is not started yet.");
return Qnil;
}
chain = SSL_get_peer_cert_chain(ssl);
if(!chain) return Qnil;
num = sk_X509_num(chain);
ary = rb_ary_new2(num);
for (i = 0; i < num; i++){
cert = sk_X509_value(chain, i);
rb_ary_push(ary, ossl_x509_new(cert));
}
return ary;
}
/*
* call-seq:
* ssl.cipher => [name, version, bits, alg_bits]
*
* The cipher being used for the current connection
*/
static VALUE
ossl_ssl_get_cipher(VALUE self)
{
SSL *ssl;
SSL_CIPHER *cipher;
Data_Get_Struct(self, SSL, ssl);
if (!ssl) {
rb_warning("SSL session is not started yet.");
return Qnil;
}
cipher = (SSL_CIPHER *)SSL_get_current_cipher(ssl);
return ossl_ssl_cipher_to_ary(cipher);
}
/*
* call-seq:
* ssl.state => string
*
* A description of the current connection state.
*/
static VALUE
ossl_ssl_get_state(VALUE self)
{
SSL *ssl;
VALUE ret;
Data_Get_Struct(self, SSL, ssl);
if (!ssl) {
rb_warning("SSL session is not started yet.");
return Qnil;
}
ret = rb_str_new2(SSL_state_string(ssl));
if (ruby_verbose) {
rb_str_cat2(ret, ": ");
rb_str_cat2(ret, SSL_state_string_long(ssl));
}
return ret;
}
/*
* call-seq:
* ssl.pending => Integer
*
* The number of bytes that are immediately available for reading
*/
static VALUE
ossl_ssl_pending(VALUE self)
{
SSL *ssl;
Data_Get_Struct(self, SSL, ssl);
if (!ssl) {
rb_warning("SSL session is not started yet.");
return Qnil;
}
return INT2NUM(SSL_pending(ssl));
}
/*
* call-seq:
* ssl.session_reused? -> true | false
*
* Returns true if a reused session was negotiated during the handshake.
*/
static VALUE
ossl_ssl_session_reused(VALUE self)
{
SSL *ssl;
Data_Get_Struct(self, SSL, ssl);
if (!ssl) {
rb_warning("SSL session is not started yet.");
return Qnil;
}
switch(SSL_session_reused(ssl)) {
case 1: return Qtrue;
case 0: return Qfalse;
default: ossl_raise(eSSLError, "SSL_session_reused");
}
}
/*
* call-seq:
* ssl.session = session -> session
*
* Sets the Session to be used when the connection is established.
*/
static VALUE
ossl_ssl_set_session(VALUE self, VALUE arg1)
{
SSL *ssl;
SSL_SESSION *sess;
/* why is ossl_ssl_setup delayed? */
ossl_ssl_setup(self);
Data_Get_Struct(self, SSL, ssl);
if (!ssl) {
rb_warning("SSL session is not started yet.");
return Qnil;
}
SafeGetSSLSession(arg1, sess);
if (SSL_set_session(ssl, sess) != 1)
ossl_raise(eSSLError, "SSL_set_session");
return arg1;
}
/*
* call-seq:
* ssl.verify_result => Integer
*
* Returns the result of the peer certificates verification. See verify(1)
* for error values and descriptions.
*
* If no peer certificate was presented X509_V_OK is returned.
*/
static VALUE
ossl_ssl_get_verify_result(VALUE self)
{
SSL *ssl;
Data_Get_Struct(self, SSL, ssl);
if (!ssl) {
rb_warning("SSL session is not started yet.");
return Qnil;
}
return INT2FIX(SSL_get_verify_result(ssl));
}
/*
* call-seq:
* ssl.client_ca => [x509name, ...]
*
* Returns the list of client CAs. Please note that in contrast to
* SSLContext#client_ca= no array of X509::Certificate is returned but
* X509::Name instances of the CA's subject distinguished name.
*
* In server mode, returns the list set by SSLContext#client_ca=.
* In client mode, returns the list of client CAs sent from the server.
*/
static VALUE
ossl_ssl_get_client_ca_list(VALUE self)
{
SSL *ssl;
STACK_OF(X509_NAME) *ca;
Data_Get_Struct(self, SSL, ssl);
if (!ssl) {
rb_warning("SSL session is not started yet.");
return Qnil;
}
ca = SSL_get_client_CA_list(ssl);
return ossl_x509name_sk2ary(ca);
}
void
Init_ossl_ssl()
{
int i;
VALUE ary;
#if 0
mOSSL = rb_define_module("OpenSSL"); /* let rdoc know about mOSSL */
#endif
ID_callback_state = rb_intern("@callback_state");
ossl_ssl_ex_vcb_idx = SSL_get_ex_new_index(0,(void *)"ossl_ssl_ex_vcb_idx",0,0,0);
ossl_ssl_ex_store_p = SSL_get_ex_new_index(0,(void *)"ossl_ssl_ex_store_p",0,0,0);
ossl_ssl_ex_ptr_idx = SSL_get_ex_new_index(0,(void *)"ossl_ssl_ex_ptr_idx",0,0,0);
ossl_ssl_ex_client_cert_cb_idx =
SSL_get_ex_new_index(0,(void *)"ossl_ssl_ex_client_cert_cb_idx",0,0,0);
ossl_ssl_ex_tmp_dh_callback_idx =
SSL_get_ex_new_index(0,(void *)"ossl_ssl_ex_tmp_dh_callback_idx",0,0,0);
mSSL = rb_define_module_under(mOSSL, "SSL");
eSSLError = rb_define_class_under(mSSL, "SSLError", eOSSLError);
Init_ossl_ssl_session();
/* Document-class: OpenSSL::SSL::SSLContext
*
* An SSLContext is used to set various options regarding certificates,
* algorithms, verification, session caching, etc. The SSLContext is
* used to create an SSLSocket.
*
* All attributes must be set before creating an SSLSocket as the
* SSLContext will be frozen afterward.
*
* The following attributes are available but don't show up in rdoc:
* * ssl_version, cert, key, client_ca, ca_file, ca_path, timeout,
* * verify_mode, verify_depth client_cert_cb, tmp_dh_callback,
* * session_id_context, session_add_cb, session_new_cb, session_remove_cb
*/
cSSLContext = rb_define_class_under(mSSL, "SSLContext", rb_cObject);
rb_define_alloc_func(cSSLContext, ossl_sslctx_s_alloc);
/*
* Context certificate
*/
rb_attr(cSSLContext, rb_intern("cert"), 1, 1, Qfalse);
/*
* Context private key
*/
rb_attr(cSSLContext, rb_intern("key"), 1, 1, Qfalse);
/*
* A certificate or Array of certificates that will be sent to the client.
*/
rb_attr(cSSLContext, rb_intern("client_ca"), 1, 1, Qfalse);
/*
* The path to a file containing a PEM-format CA certificate
*/
rb_attr(cSSLContext, rb_intern("ca_file"), 1, 1, Qfalse);
/*
* The path to a directory containing CA certificates in PEM format.
*
* Files are looked up by subject's X509 name's hash value.
*/
rb_attr(cSSLContext, rb_intern("ca_path"), 1, 1, Qfalse);
/*
* Maximum session lifetime.
*/
rb_attr(cSSLContext, rb_intern("timeout"), 1, 1, Qfalse);
/*
* Session verification mode.
*
* Valid modes are VERIFY_NONE, VERIFY_PEER, VERIFY_CLIENT_ONCE,
* VERIFY_FAIL_IF_NO_PEER_CERT and defined on OpenSSL::SSL
*/
rb_attr(cSSLContext, rb_intern("verify_mode"), 1, 1, Qfalse);
/*
* Number of CA certificates to walk when verifying a certificate chain.
*/
rb_attr(cSSLContext, rb_intern("verify_depth"), 1, 1, Qfalse);
/*
* A callback for additional certificate verification. The callback is
* invoked for each certificate in the chain.
*
* The callback is invoked with two values. +preverify_ok+ indicates
* indicates if the verification was passed (true) or not (false).
* +store_context+ is an OpenSSL::X509::StoreContext containing the
* context used for certificate verification.
*
* If the callback returns false verification is stopped.
*/
rb_attr(cSSLContext, rb_intern("verify_callback"), 1, 1, Qfalse);
/*
* Sets various OpenSSL options.
*/
rb_attr(cSSLContext, rb_intern("options"), 1, 1, Qfalse);
/*
* An OpenSSL::X509::Store used for certificate verification
*/
rb_attr(cSSLContext, rb_intern("cert_store"), 1, 1, Qfalse);
/*
* An Array of extra X509 certificates to be added to the certificate
* chain.
*/
rb_attr(cSSLContext, rb_intern("extra_chain_cert"), 1, 1, Qfalse);
/*
* A callback invoked when a client certificate is requested by a server
* and no certificate has been set.
*
* The callback is invoked with a Session and must return an Array
* containing an OpenSSL::X509::Certificate and an OpenSSL::PKey. If any
* other value is returned the handshake is suspended.
*/
rb_attr(cSSLContext, rb_intern("client_cert_cb"), 1, 1, Qfalse);
/*
* A callback invoked when DH parameters are required.
*
* The callback is invoked with the Session for the key exchange, an
* flag indicating the use of an export cipher and the keylength
* required.
*
* The callback must return an OpenSSL::PKey::DH instance of the correct
* key length.
*/
rb_attr(cSSLContext, rb_intern("tmp_dh_callback"), 1, 1, Qfalse);
/*
* Sets the context in which a session can be reused. This allows
* sessions for multiple applications to be distinguished, for exapmle, by
* name.
*/
rb_attr(cSSLContext, rb_intern("session_id_context"), 1, 1, Qfalse);
/*
* A callback invoked on a server when a session is proposed by the client
* but the session could not be found in the server's internal cache.
*
* The callback is invoked with the SSLSocket and session id. The
* callback may return a Session from an external cache.
*/
rb_attr(cSSLContext, rb_intern("session_get_cb"), 1, 1, Qfalse);
/*
* A callback invoked when a new session was negotiatied.
*
* The callback is invoked with an SSLSocket. If false is returned the
* session will be removed from the internal cache.
*/
rb_attr(cSSLContext, rb_intern("session_new_cb"), 1, 1, Qfalse);
/*
* A callback invoked when a session is removed from the internal cache.
*
* The callback is invoked with an SSLContext and a Session.
*/
rb_attr(cSSLContext, rb_intern("session_remove_cb"), 1, 1, Qfalse);
#ifdef HAVE_SSL_SET_TLSEXT_HOST_NAME
/*
* A callback invoked at connect time to distinguish between multiple
* server names.
*
* The callback is invoked with an SSLSocket and a server name. The
* callback must return an SSLContext for the server name or nil.
*/
rb_attr(cSSLContext, rb_intern("servername_cb"), 1, 1, Qfalse);
#endif
rb_define_alias(cSSLContext, "ssl_timeout", "timeout");
rb_define_alias(cSSLContext, "ssl_timeout=", "timeout=");
rb_define_method(cSSLContext, "initialize", ossl_sslctx_initialize, -1);
rb_define_method(cSSLContext, "ssl_version=", ossl_sslctx_set_ssl_version, 1);
rb_define_method(cSSLContext, "ciphers", ossl_sslctx_get_ciphers, 0);
rb_define_method(cSSLContext, "ciphers=", ossl_sslctx_set_ciphers, 1);
rb_define_method(cSSLContext, "setup", ossl_sslctx_setup, 0);
/*
* No session caching for client or server
*/
rb_define_const(cSSLContext, "SESSION_CACHE_OFF", LONG2FIX(SSL_SESS_CACHE_OFF));
/*
* Client sessions are added to the session cache
*/
rb_define_const(cSSLContext, "SESSION_CACHE_CLIENT", LONG2FIX(SSL_SESS_CACHE_CLIENT)); /* doesn't actually do anything in 0.9.8e */
/*
* Server sessions are added to the session cache
*/
rb_define_const(cSSLContext, "SESSION_CACHE_SERVER", LONG2FIX(SSL_SESS_CACHE_SERVER));
/*
* Both client and server sessions are added to the session cache
*/
rb_define_const(cSSLContext, "SESSION_CACHE_BOTH", LONG2FIX(SSL_SESS_CACHE_BOTH)); /* no different than CACHE_SERVER in 0.9.8e */
/*
* Normally the sesison cache is checked for expired sessions every 255
* connections. Since this may lead to a delay that cannot be controlled,
* the automatic flushing may be disabled and #flush_sessions can be
* called explicitly.
*/
rb_define_const(cSSLContext, "SESSION_CACHE_NO_AUTO_CLEAR", LONG2FIX(SSL_SESS_CACHE_NO_AUTO_CLEAR));
/*
* Always perform external lookups of sessions even if they are in the
* internal cache.
*
* This flag has no effect on clients
*/
rb_define_const(cSSLContext, "SESSION_CACHE_NO_INTERNAL_LOOKUP", LONG2FIX(SSL_SESS_CACHE_NO_INTERNAL_LOOKUP));
/*
* Never automatically store sessions in the internal store.
*/
rb_define_const(cSSLContext, "SESSION_CACHE_NO_INTERNAL_STORE", LONG2FIX(SSL_SESS_CACHE_NO_INTERNAL_STORE));
/*
* Enables both SESSION_CACHE_NO_INTERNAL_LOOKUP and
* SESSION_CACHE_NO_INTERNAL_STORE.
*/
rb_define_const(cSSLContext, "SESSION_CACHE_NO_INTERNAL", LONG2FIX(SSL_SESS_CACHE_NO_INTERNAL));
rb_define_method(cSSLContext, "session_add", ossl_sslctx_session_add, 1);
rb_define_method(cSSLContext, "session_remove", ossl_sslctx_session_remove, 1);
rb_define_method(cSSLContext, "session_cache_mode", ossl_sslctx_get_session_cache_mode, 0);
rb_define_method(cSSLContext, "session_cache_mode=", ossl_sslctx_set_session_cache_mode, 1);
rb_define_method(cSSLContext, "session_cache_size", ossl_sslctx_get_session_cache_size, 0);
rb_define_method(cSSLContext, "session_cache_size=", ossl_sslctx_set_session_cache_size, 1);
rb_define_method(cSSLContext, "session_cache_stats", ossl_sslctx_get_session_cache_stats, 0);
rb_define_method(cSSLContext, "flush_sessions", ossl_sslctx_flush_sessions, -1);
ary = rb_ary_new2(numberof(ossl_ssl_method_tab));
for (i = 0; i < numberof(ossl_ssl_method_tab); i++) {
rb_ary_push(ary, ID2SYM(rb_intern(ossl_ssl_method_tab[i].name)));
}
rb_obj_freeze(ary);
/* The list of available SSL/TLS methods */
rb_define_const(cSSLContext, "METHODS", ary);
/*
* Document-class: OpenSSL::SSL::SSLSocket
*
* The following attributes are available but don't show up in rdoc.
* * io, context, sync_close
*
*/
cSSLSocket = rb_define_class_under(mSSL, "SSLSocket", rb_cObject);
rb_define_alloc_func(cSSLSocket, ossl_ssl_s_alloc);
for(i = 0; i < numberof(ossl_ssl_attr_readers); i++)
rb_attr(cSSLSocket, rb_intern(ossl_ssl_attr_readers[i]), 1, 0, Qfalse);
for(i = 0; i < numberof(ossl_ssl_attrs); i++)
rb_attr(cSSLSocket, rb_intern(ossl_ssl_attrs[i]), 1, 1, Qfalse);
rb_define_alias(cSSLSocket, "to_io", "io");
rb_define_method(cSSLSocket, "initialize", ossl_ssl_initialize, -1);
rb_define_method(cSSLSocket, "connect", ossl_ssl_connect, 0);
rb_define_method(cSSLSocket, "connect_nonblock", ossl_ssl_connect_nonblock, 0);
rb_define_method(cSSLSocket, "accept", ossl_ssl_accept, 0);
rb_define_method(cSSLSocket, "accept_nonblock", ossl_ssl_accept_nonblock, 0);
rb_define_method(cSSLSocket, "sysread", ossl_ssl_read, -1);
rb_define_private_method(cSSLSocket, "sysread_nonblock", ossl_ssl_read_nonblock, -1);
rb_define_method(cSSLSocket, "syswrite", ossl_ssl_write, 1);
rb_define_private_method(cSSLSocket, "syswrite_nonblock", ossl_ssl_write_nonblock, 1);
rb_define_method(cSSLSocket, "sysclose", ossl_ssl_close, 0);
rb_define_method(cSSLSocket, "cert", ossl_ssl_get_cert, 0);
rb_define_method(cSSLSocket, "peer_cert", ossl_ssl_get_peer_cert, 0);
rb_define_method(cSSLSocket, "peer_cert_chain", ossl_ssl_get_peer_cert_chain, 0);
rb_define_method(cSSLSocket, "cipher", ossl_ssl_get_cipher, 0);
rb_define_method(cSSLSocket, "state", ossl_ssl_get_state, 0);
rb_define_method(cSSLSocket, "pending", ossl_ssl_pending, 0);
rb_define_method(cSSLSocket, "session_reused?", ossl_ssl_session_reused, 0);
/* implementation of OpenSSL::SSL::SSLSocket#session is in lib/openssl/ssl.rb */
rb_define_method(cSSLSocket, "session=", ossl_ssl_set_session, 1);
rb_define_method(cSSLSocket, "verify_result", ossl_ssl_get_verify_result, 0);
rb_define_method(cSSLSocket, "client_ca", ossl_ssl_get_client_ca_list, 0);
#define ossl_ssl_def_const(x) rb_define_const(mSSL, #x, INT2NUM(SSL_##x))
ossl_ssl_def_const(VERIFY_NONE);
ossl_ssl_def_const(VERIFY_PEER);
ossl_ssl_def_const(VERIFY_FAIL_IF_NO_PEER_CERT);
ossl_ssl_def_const(VERIFY_CLIENT_ONCE);
/* Introduce constants included in OP_ALL. These constants are mostly for
* unset some bits in OP_ALL such as;
* ctx.options = OP_ALL & ~OP_DONT_INSERT_EMPTY_FRAGMENTS
*/
ossl_ssl_def_const(OP_MICROSOFT_SESS_ID_BUG);
ossl_ssl_def_const(OP_NETSCAPE_CHALLENGE_BUG);
ossl_ssl_def_const(OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG);
ossl_ssl_def_const(OP_SSLREF2_REUSE_CERT_TYPE_BUG);
ossl_ssl_def_const(OP_MICROSOFT_BIG_SSLV3_BUFFER);
ossl_ssl_def_const(OP_MSIE_SSLV2_RSA_PADDING);
ossl_ssl_def_const(OP_SSLEAY_080_CLIENT_DH_BUG);
ossl_ssl_def_const(OP_TLS_D5_BUG);
ossl_ssl_def_const(OP_TLS_BLOCK_PADDING_BUG);
ossl_ssl_def_const(OP_DONT_INSERT_EMPTY_FRAGMENTS);
ossl_ssl_def_const(OP_ALL);
#if defined(SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION)
ossl_ssl_def_const(OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION);
#endif
#if defined(SSL_OP_SINGLE_ECDH_USE)
ossl_ssl_def_const(OP_SINGLE_ECDH_USE);
#endif
ossl_ssl_def_const(OP_SINGLE_DH_USE);
ossl_ssl_def_const(OP_EPHEMERAL_RSA);
#if defined(SSL_OP_CIPHER_SERVER_PREFERENCE)
ossl_ssl_def_const(OP_CIPHER_SERVER_PREFERENCE);
#endif
ossl_ssl_def_const(OP_TLS_ROLLBACK_BUG);
ossl_ssl_def_const(OP_NO_SSLv2);
ossl_ssl_def_const(OP_NO_SSLv3);
ossl_ssl_def_const(OP_NO_TLSv1);
#if defined(SSL_OP_NO_TICKET)
ossl_ssl_def_const(OP_NO_TICKET);
#endif
#if defined(SSL_OP_NO_COMPRESSION)
ossl_ssl_def_const(OP_NO_COMPRESSION);
#endif
ossl_ssl_def_const(OP_PKCS1_CHECK_1);
ossl_ssl_def_const(OP_PKCS1_CHECK_2);
ossl_ssl_def_const(OP_NETSCAPE_CA_DN_BUG);
ossl_ssl_def_const(OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
}
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