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openssl/ssl/ssl_lib.c
Richard Levitte 26a3a48d65 There have been a number of complaints from a number of sources that names 
like Malloc, Realloc and especially Free conflict with already existing names
on some operating systems or other packages.  That is reason enough to change
the names of the OpenSSL memory allocation macros to something that has a
better chance of being unique, like prepending them with OPENSSL_.

This change includes all the name changes needed throughout all C files.
2000-06-01 22:19:21 +00:00

2062 lines
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/*! \file ssl/ssl_lib.c
* \brief Version independent SSL functions.
*/
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include <stdio.h>
#include <openssl/objects.h>
#include <openssl/lhash.h>
#include <openssl/x509v3.h>
#include "ssl_locl.h"
const char *SSL_version_str=OPENSSL_VERSION_TEXT;
static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ssl_meth=NULL;
static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ssl_ctx_meth=NULL;
static int ssl_meth_num=0;
static int ssl_ctx_meth_num=0;
OPENSSL_GLOBAL SSL3_ENC_METHOD ssl3_undef_enc_method={
/* evil casts, but these functions are only called if there's a library bug */
(int (*)(SSL *,int))ssl_undefined_function,
(int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
ssl_undefined_function,
(int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
(int (*)(SSL*, int))ssl_undefined_function,
(int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function
};
int SSL_clear(SSL *s)
{
int state;
if (s->method == NULL)
{
SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
return(0);
}
s->error=0;
s->hit=0;
s->shutdown=0;
#if 0 /* Disabled since version 1.10 of this file (early return not
* needed because SSL_clear is not called when doing renegotiation) */
/* This is set if we are doing dynamic renegotiation so keep
* the old cipher. It is sort of a SSL_clear_lite :-) */
if (s->new_session) return(1);
#else
if (s->new_session)
{
SSLerr(SSL_F_SSL_CLEAR,SSL_R_INTERNAL_ERROR);
return 0;
}
#endif
state=s->state; /* Keep to check if we throw away the session-id */
s->type=0;
s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
s->version=s->method->version;
s->client_version=s->version;
s->rwstate=SSL_NOTHING;
s->rstate=SSL_ST_READ_HEADER;
s->read_ahead=s->ctx->read_ahead;
if (s->init_buf != NULL)
{
BUF_MEM_free(s->init_buf);
s->init_buf=NULL;
}
ssl_clear_cipher_ctx(s);
if (ssl_clear_bad_session(s))
{
SSL_SESSION_free(s->session);
s->session=NULL;
}
s->first_packet=0;
#if 1
/* Check to see if we were changed into a different method, if
* so, revert back if we are not doing session-id reuse. */
if ((s->session == NULL) && (s->method != s->ctx->method))
{
s->method->ssl_free(s);
s->method=s->ctx->method;
if (!s->method->ssl_new(s))
return(0);
}
else
#endif
s->method->ssl_clear(s);
return(1);
}
/** Used to change an SSL_CTXs default SSL method type */
int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth)
{
STACK_OF(SSL_CIPHER) *sk;
ctx->method=meth;
sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
&(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST);
if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
{
SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
return(0);
}
return(1);
}
SSL *SSL_new(SSL_CTX *ctx)
{
SSL *s;
if (ctx == NULL)
{
SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
return(NULL);
}
if (ctx->method == NULL)
{
SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
return(NULL);
}
s=(SSL *)OPENSSL_malloc(sizeof(SSL));
if (s == NULL) goto err;
memset(s,0,sizeof(SSL));
if (ctx->cert != NULL)
{
/* Earlier library versions used to copy the pointer to
* the CERT, not its contents; only when setting new
* parameters for the per-SSL copy, ssl_cert_new would be
* called (and the direct reference to the per-SSL_CTX
* settings would be lost, but those still were indirectly
* accessed for various purposes, and for that reason they
* used to be known as s->ctx->default_cert).
* Now we don't look at the SSL_CTX's CERT after having
* duplicated it once. */
s->cert = ssl_cert_dup(ctx->cert);
if (s->cert == NULL)
goto err;
}
else
s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
s->sid_ctx_length=ctx->sid_ctx_length;
memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
s->verify_mode=ctx->verify_mode;
s->verify_depth=ctx->verify_depth;
s->verify_callback=ctx->default_verify_callback;
s->purpose = ctx->purpose;
s->trust = ctx->trust;
CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
s->ctx=ctx;
s->verify_result=X509_V_OK;
s->method=ctx->method;
if (!s->method->ssl_new(s))
goto err;
s->quiet_shutdown=ctx->quiet_shutdown;
s->references=1;
s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
s->options=ctx->options;
s->mode=ctx->mode;
SSL_clear(s);
CRYPTO_new_ex_data(ssl_meth,s,&s->ex_data);
return(s);
err:
if (s != NULL)
{
if (s->cert != NULL)
ssl_cert_free(s->cert);
if (s->ctx != NULL)
SSL_CTX_free(s->ctx); /* decrement reference count */
OPENSSL_free(s);
}
SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
return(NULL);
}
int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
unsigned int sid_ctx_len)
{
if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
{
SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
return 0;
}
ctx->sid_ctx_length=sid_ctx_len;
memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
return 1;
}
int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
unsigned int sid_ctx_len)
{
if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
{
SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
return 0;
}
ssl->sid_ctx_length=sid_ctx_len;
memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
return 1;
}
int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
{
if(X509_PURPOSE_get_by_id(purpose) == -1) {
SSLerr(SSL_F_SSL_CTX_SET_PURPOSE, SSL_R_INVALID_PURPOSE);
return 0;
}
s->purpose = purpose;
return 1;
}
int SSL_set_purpose(SSL *s, int purpose)
{
if(X509_PURPOSE_get_by_id(purpose) == -1) {
SSLerr(SSL_F_SSL_SET_PURPOSE, SSL_R_INVALID_PURPOSE);
return 0;
}
s->purpose = purpose;
return 1;
}
int SSL_CTX_set_trust(SSL_CTX *s, int trust)
{
if(X509_TRUST_get_by_id(trust) == -1) {
SSLerr(SSL_F_SSL_CTX_SET_TRUST, SSL_R_INVALID_TRUST);
return 0;
}
s->trust = trust;
return 1;
}
int SSL_set_trust(SSL *s, int trust)
{
if(X509_TRUST_get_by_id(trust) == -1) {
SSLerr(SSL_F_SSL_SET_TRUST, SSL_R_INVALID_TRUST);
return 0;
}
s->trust = trust;
return 1;
}
void SSL_free(SSL *s)
{
int i;
if(s == NULL)
return;
i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
#ifdef REF_PRINT
REF_PRINT("SSL",s);
#endif
if (i > 0) return;
#ifdef REF_CHECK
if (i < 0)
{
fprintf(stderr,"SSL_free, bad reference count\n");
abort(); /* ok */
}
#endif
CRYPTO_free_ex_data(ssl_meth,(char *)s,&s->ex_data);
if (s->bbio != NULL)
{
/* If the buffering BIO is in place, pop it off */
if (s->bbio == s->wbio)
{
s->wbio=BIO_pop(s->wbio);
}
BIO_free(s->bbio);
s->bbio=NULL;
}
if (s->rbio != NULL)
BIO_free_all(s->rbio);
if ((s->wbio != NULL) && (s->wbio != s->rbio))
BIO_free_all(s->wbio);
if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
/* add extra stuff */
if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
/* Make the next call work :-) */
if (s->session != NULL)
{
ssl_clear_bad_session(s);
SSL_SESSION_free(s->session);
}
ssl_clear_cipher_ctx(s);
if (s->cert != NULL) ssl_cert_free(s->cert);
/* Free up if allocated */
if (s->ctx) SSL_CTX_free(s->ctx);
if (s->client_CA != NULL)
sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
if (s->method != NULL) s->method->ssl_free(s);
OPENSSL_free(s);
}
void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
{
/* If the output buffering BIO is still in place, remove it
*/
if (s->bbio != NULL)
{
if (s->wbio == s->bbio)
{
s->wbio=s->wbio->next_bio;
s->bbio->next_bio=NULL;
}
}
if ((s->rbio != NULL) && (s->rbio != rbio))
BIO_free_all(s->rbio);
if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
BIO_free_all(s->wbio);
s->rbio=rbio;
s->wbio=wbio;
}
BIO *SSL_get_rbio(SSL *s)
{ return(s->rbio); }
BIO *SSL_get_wbio(SSL *s)
{ return(s->wbio); }
int SSL_get_fd(SSL *s)
{
int ret= -1;
BIO *b,*r;
b=SSL_get_rbio(s);
r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
if (r != NULL)
BIO_get_fd(r,&ret);
return(ret);
}
#ifndef NO_SOCK
int SSL_set_fd(SSL *s,int fd)
{
int ret=0;
BIO *bio=NULL;
bio=BIO_new(BIO_s_socket());
if (bio == NULL)
{
SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
goto err;
}
BIO_set_fd(bio,fd,BIO_NOCLOSE);
SSL_set_bio(s,bio,bio);
ret=1;
err:
return(ret);
}
int SSL_set_wfd(SSL *s,int fd)
{
int ret=0;
BIO *bio=NULL;
if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
|| ((int)BIO_get_fd(s->rbio,NULL) != fd))
{
bio=BIO_new(BIO_s_socket());
if (bio == NULL)
{ SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
BIO_set_fd(bio,fd,BIO_NOCLOSE);
SSL_set_bio(s,SSL_get_rbio(s),bio);
}
else
SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
ret=1;
err:
return(ret);
}
int SSL_set_rfd(SSL *s,int fd)
{
int ret=0;
BIO *bio=NULL;
if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
|| ((int)BIO_get_fd(s->wbio,NULL) != fd))
{
bio=BIO_new(BIO_s_socket());
if (bio == NULL)
{
SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
goto err;
}
BIO_set_fd(bio,fd,BIO_NOCLOSE);
SSL_set_bio(s,bio,SSL_get_wbio(s));
}
else
SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
ret=1;
err:
return(ret);
}
#endif
/* return length of latest Finished message we sent, copy to 'buf' */
size_t SSL_get_finished(SSL *s, void *buf, size_t count)
{
size_t ret = 0;
if (s->s3 != NULL)
{
ret = s->s3->tmp.finish_md_len;
if (count > ret)
count = ret;
memcpy(buf, s->s3->tmp.finish_md, count);
}
return ret;
}
/* return length of latest Finished message we expected, copy to 'buf' */
size_t SSL_get_peer_finished(SSL *s, void *buf, size_t count)
{
size_t ret = 0;
if (s->s3 != NULL)
{
ret = s->s3->tmp.peer_finish_md_len;
if (count > ret)
count = ret;
memcpy(buf, s->s3->tmp.peer_finish_md, count);
}
return ret;
}
int SSL_get_verify_mode(SSL *s)
{
return(s->verify_mode);
}
int SSL_get_verify_depth(SSL *s)
{
return(s->verify_depth);
}
int (*SSL_get_verify_callback(SSL *s))(int,X509_STORE_CTX *)
{
return(s->verify_callback);
}
int SSL_CTX_get_verify_mode(SSL_CTX *ctx)
{
return(ctx->verify_mode);
}
int SSL_CTX_get_verify_depth(SSL_CTX *ctx)
{
return(ctx->verify_depth);
}
int (*SSL_CTX_get_verify_callback(SSL_CTX *ctx))(int,X509_STORE_CTX *)
{
return(ctx->default_verify_callback);
}
void SSL_set_verify(SSL *s,int mode,
int (*callback)(int ok,X509_STORE_CTX *ctx))
{
s->verify_mode=mode;
if (callback != NULL)
s->verify_callback=callback;
}
void SSL_set_verify_depth(SSL *s,int depth)
{
s->verify_depth=depth;
}
void SSL_set_read_ahead(SSL *s,int yes)
{
s->read_ahead=yes;
}
int SSL_get_read_ahead(SSL *s)
{
return(s->read_ahead);
}
int SSL_pending(SSL *s)
{
return(s->method->ssl_pending(s));
}
X509 *SSL_get_peer_certificate(SSL *s)
{
X509 *r;
if ((s == NULL) || (s->session == NULL))
r=NULL;
else
r=s->session->peer;
if (r == NULL) return(r);
CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
return(r);
}
STACK_OF(X509) *SSL_get_peer_cert_chain(SSL *s)
{
STACK_OF(X509) *r;
if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
r=NULL;
else
r=s->session->sess_cert->cert_chain;
/* If we are a client, cert_chain includes the peer's own
* certificate; if we are a server, it does not. */
return(r);
}
/* Now in theory, since the calling process own 't' it should be safe to
* modify. We need to be able to read f without being hassled */
void SSL_copy_session_id(SSL *t,SSL *f)
{
CERT *tmp;
/* Do we need to to SSL locking? */
SSL_set_session(t,SSL_get_session(f));
/* what if we are setup as SSLv2 but want to talk SSLv3 or
* vice-versa */
if (t->method != f->method)
{
t->method->ssl_free(t); /* cleanup current */
t->method=f->method; /* change method */
t->method->ssl_new(t); /* setup new */
}
tmp=t->cert;
if (f->cert != NULL)
{
CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
t->cert=f->cert;
}
else
t->cert=NULL;
if (tmp != NULL) ssl_cert_free(tmp);
SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
}
/* Fix this so it checks all the valid key/cert options */
int SSL_CTX_check_private_key(SSL_CTX *ctx)
{
if ( (ctx == NULL) ||
(ctx->cert == NULL) ||
(ctx->cert->key->x509 == NULL))
{
SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
return(0);
}
if (ctx->cert->key->privatekey == NULL)
{
SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
return(0);
}
return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
}
/* Fix this function so that it takes an optional type parameter */
int SSL_check_private_key(SSL *ssl)
{
if (ssl == NULL)
{
SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
return(0);
}
if (ssl->cert == NULL)
{
SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
return 0;
}
if (ssl->cert->key->x509 == NULL)
{
SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
return(0);
}
if (ssl->cert->key->privatekey == NULL)
{
SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
return(0);
}
return(X509_check_private_key(ssl->cert->key->x509,
ssl->cert->key->privatekey));
}
int SSL_accept(SSL *s)
{
if (s->handshake_func == 0)
/* Not properly initialized yet */
SSL_set_accept_state(s);
return(s->method->ssl_accept(s));
}
int SSL_connect(SSL *s)
{
if (s->handshake_func == 0)
/* Not properly initialized yet */
SSL_set_connect_state(s);
return(s->method->ssl_connect(s));
}
long SSL_get_default_timeout(SSL *s)
{
return(s->method->get_timeout());
}
int SSL_read(SSL *s,char *buf,int num)
{
if (s->handshake_func == 0)
{
SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
return -1;
}
if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
{
s->rwstate=SSL_NOTHING;
return(0);
}
return(s->method->ssl_read(s,buf,num));
}
int SSL_peek(SSL *s,char *buf,int num)
{
if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
{
return(0);
}
return(s->method->ssl_peek(s,buf,num));
}
int SSL_write(SSL *s,const char *buf,int num)
{
if (s->handshake_func == 0)
{
SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
return -1;
}
if (s->shutdown & SSL_SENT_SHUTDOWN)
{
s->rwstate=SSL_NOTHING;
SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
return(-1);
}
return(s->method->ssl_write(s,buf,num));
}
int SSL_shutdown(SSL *s)
{
/* Note that this function behaves differently from what one might
* expect. Return values are 0 for no success (yet),
* 1 for success; but calling it once is usually not enough,
* even if blocking I/O is used (see ssl3_shutdown).
*/
if (s->handshake_func == 0)
{
SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
return -1;
}
if ((s != NULL) && !SSL_in_init(s))
return(s->method->ssl_shutdown(s));
else
return(1);
}
int SSL_renegotiate(SSL *s)
{
s->new_session=1;
return(s->method->ssl_renegotiate(s));
}
long SSL_ctrl(SSL *s,int cmd,long larg,char *parg)
{
long l;
switch (cmd)
{
case SSL_CTRL_GET_READ_AHEAD:
return(s->read_ahead);
case SSL_CTRL_SET_READ_AHEAD:
l=s->read_ahead;
s->read_ahead=larg;
return(l);
case SSL_CTRL_OPTIONS:
return(s->options|=larg);
case SSL_CTRL_MODE:
return(s->mode|=larg);
default:
return(s->method->ssl_ctrl(s,cmd,larg,parg));
}
}
long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)())
{
switch(cmd)
{
default:
return(s->method->ssl_callback_ctrl(s,cmd,fp));
}
}
struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx)
{
return ctx->sessions;
}
long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,char *parg)
{
long l;
switch (cmd)
{
case SSL_CTRL_GET_READ_AHEAD:
return(ctx->read_ahead);
case SSL_CTRL_SET_READ_AHEAD:
l=ctx->read_ahead;
ctx->read_ahead=larg;
return(l);
case SSL_CTRL_SET_SESS_CACHE_SIZE:
l=ctx->session_cache_size;
ctx->session_cache_size=larg;
return(l);
case SSL_CTRL_GET_SESS_CACHE_SIZE:
return(ctx->session_cache_size);
case SSL_CTRL_SET_SESS_CACHE_MODE:
l=ctx->session_cache_mode;
ctx->session_cache_mode=larg;
return(l);
case SSL_CTRL_GET_SESS_CACHE_MODE:
return(ctx->session_cache_mode);
case SSL_CTRL_SESS_NUMBER:
return(ctx->sessions->num_items);
case SSL_CTRL_SESS_CONNECT:
return(ctx->stats.sess_connect);
case SSL_CTRL_SESS_CONNECT_GOOD:
return(ctx->stats.sess_connect_good);
case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
return(ctx->stats.sess_connect_renegotiate);
case SSL_CTRL_SESS_ACCEPT:
return(ctx->stats.sess_accept);
case SSL_CTRL_SESS_ACCEPT_GOOD:
return(ctx->stats.sess_accept_good);
case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
return(ctx->stats.sess_accept_renegotiate);
case SSL_CTRL_SESS_HIT:
return(ctx->stats.sess_hit);
case SSL_CTRL_SESS_CB_HIT:
return(ctx->stats.sess_cb_hit);
case SSL_CTRL_SESS_MISSES:
return(ctx->stats.sess_miss);
case SSL_CTRL_SESS_TIMEOUTS:
return(ctx->stats.sess_timeout);
case SSL_CTRL_SESS_CACHE_FULL:
return(ctx->stats.sess_cache_full);
case SSL_CTRL_OPTIONS:
return(ctx->options|=larg);
case SSL_CTRL_MODE:
return(ctx->mode|=larg);
default:
return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
}
}
long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)())
{
switch(cmd)
{
default:
return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
}
}
int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
{
long l;
l=a->id-b->id;
if (l == 0L)
return(0);
else
return((l > 0)?1:-1);
}
int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
const SSL_CIPHER * const *bp)
{
long l;
l=(*ap)->id-(*bp)->id;
if (l == 0L)
return(0);
else
return((l > 0)?1:-1);
}
/** return a STACK of the ciphers available for the SSL and in order of
* preference */
STACK_OF(SSL_CIPHER) *SSL_get_ciphers(SSL *s)
{
if ((s != NULL) && (s->cipher_list != NULL))
{
return(s->cipher_list);
}
else if ((s->ctx != NULL) &&
(s->ctx->cipher_list != NULL))
{
return(s->ctx->cipher_list);
}
return(NULL);
}
/** return a STACK of the ciphers available for the SSL and in order of
* algorithm id */
STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
{
if ((s != NULL) && (s->cipher_list_by_id != NULL))
{
return(s->cipher_list_by_id);
}
else if ((s != NULL) && (s->ctx != NULL) &&
(s->ctx->cipher_list_by_id != NULL))
{
return(s->ctx->cipher_list_by_id);
}
return(NULL);
}
/** The old interface to get the same thing as SSL_get_ciphers() */
const char *SSL_get_cipher_list(SSL *s,int n)
{
SSL_CIPHER *c;
STACK_OF(SSL_CIPHER) *sk;
if (s == NULL) return(NULL);
sk=SSL_get_ciphers(s);
if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
return(NULL);
c=sk_SSL_CIPHER_value(sk,n);
if (c == NULL) return(NULL);
return(c->name);
}
/** specify the ciphers to be used by default by the SSL_CTX */
int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
{
STACK_OF(SSL_CIPHER) *sk;
sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
&ctx->cipher_list_by_id,str);
/* XXXX */
return((sk == NULL)?0:1);
}
/** specify the ciphers to be used by the SSL */
int SSL_set_cipher_list(SSL *s,const char *str)
{
STACK_OF(SSL_CIPHER) *sk;
sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
&s->cipher_list_by_id,str);
/* XXXX */
return((sk == NULL)?0:1);
}
/* works well for SSLv2, not so good for SSLv3 */
char *SSL_get_shared_ciphers(SSL *s,char *buf,int len)
{
char *p;
const char *cp;
STACK_OF(SSL_CIPHER) *sk;
SSL_CIPHER *c;
int i;
if ((s->session == NULL) || (s->session->ciphers == NULL) ||
(len < 2))
return(NULL);
p=buf;
sk=s->session->ciphers;
for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
{
/* Decrement for either the ':' or a '\0' */
len--;
c=sk_SSL_CIPHER_value(sk,i);
for (cp=c->name; *cp; )
{
if (len-- == 0)
{
*p='\0';
return(buf);
}
else
*(p++)= *(cp++);
}
*(p++)=':';
}
p[-1]='\0';
return(buf);
}
int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p)
{
int i,j=0;
SSL_CIPHER *c;
unsigned char *q;
if (sk == NULL) return(0);
q=p;
for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
{
c=sk_SSL_CIPHER_value(sk,i);
j=ssl_put_cipher_by_char(s,c,p);
p+=j;
}
return(p-q);
}
STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
STACK_OF(SSL_CIPHER) **skp)
{
SSL_CIPHER *c;
STACK_OF(SSL_CIPHER) *sk;
int i,n;
n=ssl_put_cipher_by_char(s,NULL,NULL);
if ((num%n) != 0)
{
SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
return(NULL);
}
if ((skp == NULL) || (*skp == NULL))
sk=sk_SSL_CIPHER_new(NULL); /* change perhaps later */
else
{
sk= *skp;
sk_SSL_CIPHER_zero(sk);
}
for (i=0; i<num; i+=n)
{
c=ssl_get_cipher_by_char(s,p);
p+=n;
if (c != NULL)
{
if (!sk_SSL_CIPHER_push(sk,c))
{
SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
goto err;
}
}
}
if (skp != NULL)
*skp=sk;
return(sk);
err:
if ((skp == NULL) || (*skp == NULL))
sk_SSL_CIPHER_free(sk);
return(NULL);
}
unsigned long SSL_SESSION_hash(SSL_SESSION *a)
{
unsigned long l;
l=(unsigned long)
((unsigned int) a->session_id[0] )|
((unsigned int) a->session_id[1]<< 8L)|
((unsigned long)a->session_id[2]<<16L)|
((unsigned long)a->session_id[3]<<24L);
return(l);
}
int SSL_SESSION_cmp(SSL_SESSION *a,SSL_SESSION *b)
{
if (a->ssl_version != b->ssl_version)
return(1);
if (a->session_id_length != b->session_id_length)
return(1);
return(memcmp(a->session_id,b->session_id,a->session_id_length));
}
SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
{
SSL_CTX *ret=NULL;
if (meth == NULL)
{
SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
return(NULL);
}
if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
{
SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
goto err;
}
ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
if (ret == NULL)
goto err;
memset(ret,0,sizeof(SSL_CTX));
ret->method=meth;
ret->cert_store=NULL;
ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
ret->session_cache_head=NULL;
ret->session_cache_tail=NULL;
/* We take the system default */
ret->session_timeout=meth->get_timeout();
ret->new_session_cb=NULL;
ret->remove_session_cb=NULL;
ret->get_session_cb=NULL;
memset((char *)&ret->stats,0,sizeof(ret->stats));
ret->references=1;
ret->quiet_shutdown=0;
/* ret->cipher=NULL;*/
/* ret->s2->challenge=NULL;
ret->master_key=NULL;
ret->key_arg=NULL;
ret->s2->conn_id=NULL; */
ret->info_callback=NULL;
ret->app_verify_callback=NULL;
ret->app_verify_arg=NULL;
ret->read_ahead=0;
ret->verify_mode=SSL_VERIFY_NONE;
ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
ret->default_verify_callback=NULL;
if ((ret->cert=ssl_cert_new()) == NULL)
goto err;
ret->default_passwd_callback=NULL;
ret->default_passwd_callback_userdata=NULL;
ret->client_cert_cb=NULL;
ret->sessions=lh_new(SSL_SESSION_hash,SSL_SESSION_cmp);
if (ret->sessions == NULL) goto err;
ret->cert_store=X509_STORE_new();
if (ret->cert_store == NULL) goto err;
ssl_create_cipher_list(ret->method,
&ret->cipher_list,&ret->cipher_list_by_id,
SSL_DEFAULT_CIPHER_LIST);
if (ret->cipher_list == NULL
|| sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
{
SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
goto err2;
}
if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
{
SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
goto err2;
}
if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
{
SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
goto err2;
}
if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
{
SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
goto err2;
}
if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
goto err;
CRYPTO_new_ex_data(ssl_ctx_meth,(char *)ret,&ret->ex_data);
ret->extra_certs=NULL;
ret->comp_methods=SSL_COMP_get_compression_methods();
return(ret);
err:
SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
err2:
if (ret != NULL) SSL_CTX_free(ret);
return(NULL);
}
static void SSL_COMP_free(SSL_COMP *comp)
{ OPENSSL_free(comp); }
void SSL_CTX_free(SSL_CTX *a)
{
int i;
if (a == NULL) return;
i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
#ifdef REF_PRINT
REF_PRINT("SSL_CTX",a);
#endif
if (i > 0) return;
#ifdef REF_CHECK
if (i < 0)
{
fprintf(stderr,"SSL_CTX_free, bad reference count\n");
abort(); /* ok */
}
#endif
CRYPTO_free_ex_data(ssl_ctx_meth,(char *)a,&a->ex_data);
if (a->sessions != NULL)
{
SSL_CTX_flush_sessions(a,0);
lh_free(a->sessions);
}
if (a->cert_store != NULL)
X509_STORE_free(a->cert_store);
if (a->cipher_list != NULL)
sk_SSL_CIPHER_free(a->cipher_list);
if (a->cipher_list_by_id != NULL)
sk_SSL_CIPHER_free(a->cipher_list_by_id);
if (a->cert != NULL)
ssl_cert_free(a->cert);
if (a->client_CA != NULL)
sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
if (a->extra_certs != NULL)
sk_X509_pop_free(a->extra_certs,X509_free);
if (a->comp_methods != NULL)
sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
OPENSSL_free(a);
}
void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
{
ctx->default_passwd_callback=cb;
}
void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
{
ctx->default_passwd_callback_userdata=u;
}
void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,int (*cb)(),char *arg)
{
/* now
* int (*cb)(X509_STORE_CTX *),
* but should be
* int (*cb)(X509_STORE_CTX *, void *arg)
*/
ctx->app_verify_callback=cb;
ctx->app_verify_arg=arg; /* never used */
}
void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
{
ctx->verify_mode=mode;
ctx->default_verify_callback=cb;
/* This needs cleaning up EAY EAY EAY */
X509_STORE_set_verify_cb_func(ctx->cert_store,cb);
}
void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
{
ctx->verify_depth=depth;
}
void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
{
CERT_PKEY *cpk;
int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
int rsa_enc_export,dh_rsa_export,dh_dsa_export;
int rsa_tmp_export,dh_tmp_export,kl;
unsigned long mask,emask;
if (c == NULL) return;
kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
#ifndef NO_RSA
rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
(rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
#else
rsa_tmp=rsa_tmp_export=0;
#endif
#ifndef NO_DH
dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
dh_tmp_export=(c->dh_tmp_cb != NULL ||
(dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
#else
dh_tmp=dh_tmp_export=0;
#endif
cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
/* FIX THIS EAY EAY EAY */
dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
mask=0;
emask=0;
#ifdef CIPHER_DEBUG
printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
rsa_tmp,rsa_tmp_export,dh_tmp,
rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
#endif
if (rsa_enc || (rsa_tmp && rsa_sign))
mask|=SSL_kRSA;
if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
emask|=SSL_kRSA;
#if 0
/* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
if ( (dh_tmp || dh_rsa || dh_dsa) &&
(rsa_enc || rsa_sign || dsa_sign))
mask|=SSL_kEDH;
if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
(rsa_enc || rsa_sign || dsa_sign))
emask|=SSL_kEDH;
#endif
if (dh_tmp_export)
emask|=SSL_kEDH;
if (dh_tmp)
mask|=SSL_kEDH;
if (dh_rsa) mask|=SSL_kDHr;
if (dh_rsa_export) emask|=SSL_kDHr;
if (dh_dsa) mask|=SSL_kDHd;
if (dh_dsa_export) emask|=SSL_kDHd;
if (rsa_enc || rsa_sign)
{
mask|=SSL_aRSA;
emask|=SSL_aRSA;
}
if (dsa_sign)
{
mask|=SSL_aDSS;
emask|=SSL_aDSS;
}
mask|=SSL_aNULL;
emask|=SSL_aNULL;
c->mask=mask;
c->export_mask=emask;
c->valid=1;
}
/* THIS NEEDS CLEANING UP */
X509 *ssl_get_server_send_cert(SSL *s)
{
unsigned long alg,mask,kalg;
CERT *c;
int i,is_export;
c=s->cert;
ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
alg=s->s3->tmp.new_cipher->algorithms;
is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
mask=is_export?c->export_mask:c->mask;
kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK);
if (kalg & SSL_kDHr)
i=SSL_PKEY_DH_RSA;
else if (kalg & SSL_kDHd)
i=SSL_PKEY_DH_DSA;
else if (kalg & SSL_aDSS)
i=SSL_PKEY_DSA_SIGN;
else if (kalg & SSL_aRSA)
{
if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
i=SSL_PKEY_RSA_SIGN;
else
i=SSL_PKEY_RSA_ENC;
}
else /* if (kalg & SSL_aNULL) */
{
SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,SSL_R_INTERNAL_ERROR);
return(NULL);
}
if (c->pkeys[i].x509 == NULL) return(NULL);
return(c->pkeys[i].x509);
}
EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
{
unsigned long alg;
CERT *c;
alg=cipher->algorithms;
c=s->cert;
if ((alg & SSL_aDSS) &&
(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
else if (alg & SSL_aRSA)
{
if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
else
return(NULL);
}
else /* if (alg & SSL_aNULL) */
{
SSLerr(SSL_F_SSL_GET_SIGN_PKEY,SSL_R_INTERNAL_ERROR);
return(NULL);
}
}
void ssl_update_cache(SSL *s,int mode)
{
int i;
/* If the session_id_length is 0, we are not supposed to cache it,
* and it would be rather hard to do anyway :-) */
if (s->session->session_id_length == 0) return;
if ((s->ctx->session_cache_mode & mode)
&& (!s->hit)
&& SSL_CTX_add_session(s->ctx,s->session)
&& (s->ctx->new_session_cb != NULL))
{
CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
if (!s->ctx->new_session_cb(s,s->session))
SSL_SESSION_free(s->session);
}
/* auto flush every 255 connections */
i=s->ctx->session_cache_mode;
if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
((i & mode) == mode))
{
if ( (((mode & SSL_SESS_CACHE_CLIENT)
?s->ctx->stats.sess_connect_good
:s->ctx->stats.sess_accept_good) & 0xff) == 0xff)
{
SSL_CTX_flush_sessions(s->ctx,time(NULL));
}
}
}
SSL_METHOD *SSL_get_ssl_method(SSL *s)
{
return(s->method);
}
int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth)
{
int conn= -1;
int ret=1;
if (s->method != meth)
{
if (s->handshake_func != NULL)
conn=(s->handshake_func == s->method->ssl_connect);
if (s->method->version == meth->version)
s->method=meth;
else
{
s->method->ssl_free(s);
s->method=meth;
ret=s->method->ssl_new(s);
}
if (conn == 1)
s->handshake_func=meth->ssl_connect;
else if (conn == 0)
s->handshake_func=meth->ssl_accept;
}
return(ret);
}
int SSL_get_error(SSL *s,int i)
{
int reason;
unsigned long l;
BIO *bio;
if (i > 0) return(SSL_ERROR_NONE);
/* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
* etc, where we do encode the error */
if ((l=ERR_peek_error()) != 0)
{
if (ERR_GET_LIB(l) == ERR_LIB_SYS)
return(SSL_ERROR_SYSCALL);
else
return(SSL_ERROR_SSL);
}
if ((i < 0) && SSL_want_read(s))
{
bio=SSL_get_rbio(s);
if (BIO_should_read(bio))
return(SSL_ERROR_WANT_READ);
else if (BIO_should_write(bio))
/* This one doesn't make too much sense ... We never try
* to write to the rbio, and an application program where
* rbio and wbio are separate couldn't even know what it
* should wait for.
* However if we ever set s->rwstate incorrectly
* (so that we have SSL_want_read(s) instead of
* SSL_want_write(s)) and rbio and wbio *are* the same,
* this test works around that bug; so it might be safer
* to keep it. */
return(SSL_ERROR_WANT_WRITE);
else if (BIO_should_io_special(bio))
{
reason=BIO_get_retry_reason(bio);
if (reason == BIO_RR_CONNECT)
return(SSL_ERROR_WANT_CONNECT);
else
return(SSL_ERROR_SYSCALL); /* unknown */
}
}
if ((i < 0) && SSL_want_write(s))
{
bio=SSL_get_wbio(s);
if (BIO_should_write(bio))
return(SSL_ERROR_WANT_WRITE);
else if (BIO_should_read(bio))
/* See above (SSL_want_read(s) with BIO_should_write(bio)) */
return(SSL_ERROR_WANT_READ);
else if (BIO_should_io_special(bio))
{
reason=BIO_get_retry_reason(bio);
if (reason == BIO_RR_CONNECT)
return(SSL_ERROR_WANT_CONNECT);
else
return(SSL_ERROR_SYSCALL);
}
}
if ((i < 0) && SSL_want_x509_lookup(s))
{
return(SSL_ERROR_WANT_X509_LOOKUP);
}
if (i == 0)
{
if (s->version == SSL2_VERSION)
{
/* assume it is the socket being closed */
return(SSL_ERROR_ZERO_RETURN);
}
else
{
if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
(s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
return(SSL_ERROR_ZERO_RETURN);
}
}
return(SSL_ERROR_SYSCALL);
}
int SSL_do_handshake(SSL *s)
{
int ret=1;
if (s->handshake_func == NULL)
{
SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
return(-1);
}
s->method->ssl_renegotiate_check(s);
if (SSL_in_init(s) || SSL_in_before(s))
{
ret=s->handshake_func(s);
}
return(ret);
}
/* For the next 2 functions, SSL_clear() sets shutdown and so
* one of these calls will reset it */
void SSL_set_accept_state(SSL *s)
{
s->server=1;
s->shutdown=0;
s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
s->handshake_func=s->method->ssl_accept;
/* clear the current cipher */
ssl_clear_cipher_ctx(s);
}
void SSL_set_connect_state(SSL *s)
{
s->server=0;
s->shutdown=0;
s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
s->handshake_func=s->method->ssl_connect;
/* clear the current cipher */
ssl_clear_cipher_ctx(s);
}
int ssl_undefined_function(SSL *s)
{
SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
return(0);
}
SSL_METHOD *ssl_bad_method(int ver)
{
SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
return(NULL);
}
const char *SSL_get_version(SSL *s)
{
if (s->version == TLS1_VERSION)
return("TLSv1");
else if (s->version == SSL3_VERSION)
return("SSLv3");
else if (s->version == SSL2_VERSION)
return("SSLv2");
else
return("unknown");
}
SSL *SSL_dup(SSL *s)
{
STACK_OF(X509_NAME) *sk;
X509_NAME *xn;
SSL *ret;
int i;
if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
return(NULL);
if (s->session != NULL)
{
/* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
SSL_copy_session_id(ret,s);
}
else
{
/* No session has been established yet, so we have to expect
* that s->cert or ret->cert will be changed later --
* they should not both point to the same object,
* and thus we can't use SSL_copy_session_id. */
ret->method = s->method;
ret->method->ssl_new(ret);
if (s->cert != NULL)
{
ret->cert = ssl_cert_dup(s->cert);
if (ret->cert == NULL)
goto err;
}
SSL_set_session_id_context(ret,
s->sid_ctx, s->sid_ctx_length);
}
SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
SSL_set_verify(ret,SSL_get_verify_mode(s),
SSL_get_verify_callback(s));
SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
SSL_set_info_callback(ret,SSL_get_info_callback(s));
ret->debug=s->debug;
ret->options=s->options;
/* copy app data, a little dangerous perhaps */
if (!CRYPTO_dup_ex_data(ssl_meth,&ret->ex_data,&s->ex_data))
goto err;
/* setup rbio, and wbio */
if (s->rbio != NULL)
{
if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
goto err;
}
if (s->wbio != NULL)
{
if (s->wbio != s->rbio)
{
if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
goto err;
}
else
ret->wbio=ret->rbio;
}
/* dup the cipher_list and cipher_list_by_id stacks */
if (s->cipher_list != NULL)
{
if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
goto err;
}
if (s->cipher_list_by_id != NULL)
if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
== NULL)
goto err;
/* Dup the client_CA list */
if (s->client_CA != NULL)
{
if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
ret->client_CA=sk;
for (i=0; i<sk_X509_NAME_num(sk); i++)
{
xn=sk_X509_NAME_value(sk,i);
if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
{
X509_NAME_free(xn);
goto err;
}
}
}
ret->shutdown=s->shutdown;
ret->state=s->state;
ret->handshake_func=s->handshake_func;
ret->server=s->server;
if (0)
{
err:
if (ret != NULL) SSL_free(ret);
ret=NULL;
}
return(ret);
}
void ssl_clear_cipher_ctx(SSL *s)
{
if (s->enc_read_ctx != NULL)
{
EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
OPENSSL_free(s->enc_read_ctx);
s->enc_read_ctx=NULL;
}
if (s->enc_write_ctx != NULL)
{
EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
OPENSSL_free(s->enc_write_ctx);
s->enc_write_ctx=NULL;
}
if (s->expand != NULL)
{
COMP_CTX_free(s->expand);
s->expand=NULL;
}
if (s->compress != NULL)
{
COMP_CTX_free(s->compress);
s->compress=NULL;
}
}
/* Fix this function so that it takes an optional type parameter */
X509 *SSL_get_certificate(SSL *s)
{
if (s->cert != NULL)
return(s->cert->key->x509);
else
return(NULL);
}
/* Fix this function so that it takes an optional type parameter */
EVP_PKEY *SSL_get_privatekey(SSL *s)
{
if (s->cert != NULL)
return(s->cert->key->privatekey);
else
return(NULL);
}
SSL_CIPHER *SSL_get_current_cipher(SSL *s)
{
if ((s->session != NULL) && (s->session->cipher != NULL))
return(s->session->cipher);
return(NULL);
}
int ssl_init_wbio_buffer(SSL *s,int push)
{
BIO *bbio;
if (s->bbio == NULL)
{
bbio=BIO_new(BIO_f_buffer());
if (bbio == NULL) return(0);
s->bbio=bbio;
}
else
{
bbio=s->bbio;
if (s->bbio == s->wbio)
s->wbio=BIO_pop(s->wbio);
}
(void)BIO_reset(bbio);
/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
if (!BIO_set_read_buffer_size(bbio,1))
{
SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
return(0);
}
if (push)
{
if (s->wbio != bbio)
s->wbio=BIO_push(bbio,s->wbio);
}
else
{
if (s->wbio == bbio)
s->wbio=BIO_pop(bbio);
}
return(1);
}
void ssl_free_wbio_buffer(SSL *s)
{
BIO *under;
if (s->bbio == NULL) return;
if (s->bbio == s->wbio)
{
/* remove buffering */
under=BIO_pop(s->wbio);
if (under != NULL)
s->wbio=under;
else
abort(); /* ok */
}
BIO_free(s->bbio);
s->bbio=NULL;
}
void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
{
ctx->quiet_shutdown=mode;
}
int SSL_CTX_get_quiet_shutdown(SSL_CTX *ctx)
{
return(ctx->quiet_shutdown);
}
void SSL_set_quiet_shutdown(SSL *s,int mode)
{
s->quiet_shutdown=mode;
}
int SSL_get_quiet_shutdown(SSL *s)
{
return(s->quiet_shutdown);
}
void SSL_set_shutdown(SSL *s,int mode)
{
s->shutdown=mode;
}
int SSL_get_shutdown(SSL *s)
{
return(s->shutdown);
}
int SSL_version(SSL *s)
{
return(s->version);
}
SSL_CTX *SSL_get_SSL_CTX(SSL *ssl)
{
return(ssl->ctx);
}
#ifndef NO_STDIO
int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
{
return(X509_STORE_set_default_paths(ctx->cert_store));
}
int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
const char *CApath)
{
return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
}
#endif
void SSL_set_info_callback(SSL *ssl,void (*cb)())
{
ssl->info_callback=cb;
}
void (*SSL_get_info_callback(SSL *ssl))(void)
{
return((void (*)())ssl->info_callback);
}
int SSL_state(SSL *ssl)
{
return(ssl->state);
}
void SSL_set_verify_result(SSL *ssl,long arg)
{
ssl->verify_result=arg;
}
long SSL_get_verify_result(SSL *ssl)
{
return(ssl->verify_result);
}
int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
{
ssl_meth_num++;
return(CRYPTO_get_ex_new_index(ssl_meth_num-1,
&ssl_meth,argl,argp,new_func,dup_func,free_func));
}
int SSL_set_ex_data(SSL *s,int idx,void *arg)
{
return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
}
void *SSL_get_ex_data(SSL *s,int idx)
{
return(CRYPTO_get_ex_data(&s->ex_data,idx));
}
int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
{
ssl_ctx_meth_num++;
return(CRYPTO_get_ex_new_index(ssl_ctx_meth_num-1,
&ssl_ctx_meth,argl,argp,new_func,dup_func,free_func));
}
int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
{
return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
}
void *SSL_CTX_get_ex_data(SSL_CTX *s,int idx)
{
return(CRYPTO_get_ex_data(&s->ex_data,idx));
}
int ssl_ok(SSL *s)
{
return(1);
}
X509_STORE *SSL_CTX_get_cert_store(SSL_CTX *ctx)
{
return(ctx->cert_store);
}
void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
{
if (ctx->cert_store != NULL)
X509_STORE_free(ctx->cert_store);
ctx->cert_store=store;
}
int SSL_want(SSL *s)
{
return(s->rwstate);
}
/*!
* \brief Set the callback for generating temporary RSA keys.
* \param ctx the SSL context.
* \param cb the callback
*/
#ifndef NO_RSA
void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
int is_export,
int keylength))
{
SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
}
void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
int is_export,
int keylength))
{
SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
}
#endif
#ifdef DOXYGEN
/*!
* \brief The RSA temporary key callback function.
* \param ssl the SSL session.
* \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
* \param keylength if \c is_export is \c TRUE, then \c keylength is the size
* of the required key in bits.
* \return the temporary RSA key.
* \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
*/
RSA *cb(SSL *ssl,int is_export,int keylength)
{}
#endif
/*!
* \brief Set the callback for generating temporary DH keys.
* \param ctx the SSL context.
* \param dh the callback
*/
#ifndef NO_DH
void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
int keylength))
{
SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
}
void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
int keylength))
{
SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
}
#endif
#if defined(_WINDLL) && defined(WIN16)
#include "../crypto/bio/bss_file.c"
#endif
IMPLEMENT_STACK_OF(SSL_CIPHER)
IMPLEMENT_STACK_OF(SSL_COMP)
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