X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=ssl%2Fssl_lib.c;h=9b02b6a3438f8d5f3ee80361988195551525ac5a;hp=09c837cc97052f0604e8fb3a10e5bd5c0aa0f362;hb=29a5374fb6afe1c1fd4e742f854ea475ab503c67;hpb=3ae76679c7aeebd455173bb65b720b97c3261a79

diff --git a/ssl/ssl_lib.c b/ssl/ssl_lib.c
index 09c837cc97..9b02b6a343 100644
--- a/ssl/ssl_lib.c
+++ b/ssl/ssl_lib.c
@@ -61,22 +61,24 @@
 #include <stdio.h>
 #include <openssl/objects.h>
 #include <openssl/lhash.h>
+#include <openssl/x509v3.h>
 #include "ssl_locl.h"
 
-char *SSL_version_str=OPENSSL_VERSION_TEXT;
+const char *SSL_version_str=OPENSSL_VERSION_TEXT;
 
-static STACK *ssl_meth=NULL;
-static STACK *ssl_ctx_meth=NULL;
+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;
 
-GLOBAL SSL3_ENC_METHOD ssl3_undef_enc_method={
-	ssl_undefined_function,
-	ssl_undefined_function,
-	ssl_undefined_function,
-	ssl_undefined_function,
-	ssl_undefined_function,
+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)
@@ -93,10 +95,17 @@ int SSL_clear(SSL *s)
 	s->hit=0;
 	s->shutdown=0;
 
-#if 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 */
@@ -201,6 +210,8 @@ SSL *SSL_new(SSL_CTX *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;
 
@@ -215,9 +226,10 @@ SSL *SSL_new(SSL_CTX *ctx)
 	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,(char *)s,&s->ex_data);
+	CRYPTO_new_ex_data(ssl_meth,s,&s->ex_data);
 
 	return(s);
 err:
@@ -261,6 +273,46 @@ int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
     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;
@@ -323,7 +375,7 @@ void SSL_free(SSL *s)
 
 	if (s->method != NULL) s->method->ssl_free(s);
 
-	Free((char *)s);
+	Free(s);
 	}
 
 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
@@ -432,6 +484,38 @@ err:
 	}
 #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);
@@ -575,7 +659,10 @@ int SSL_check_private_key(SSL *ssl)
 		return(0);
 		}
 	if (ssl->cert == NULL)
-		return(SSL_CTX_check_private_key(ssl->ctx));
+		{
+                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);
@@ -657,6 +744,12 @@ int SSL_write(SSL *s,const char *buf,int 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);
@@ -689,11 +782,22 @@ long SSL_ctrl(SSL *s,int cmd,long larg,char *parg)
 		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));
+		}
+	}
+
 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,char *parg)
 	{
 	long l;
@@ -746,11 +850,22 @@ long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,char *parg)
 		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(SSL_CIPHER *a,SSL_CIPHER *b)
 	{
 	long l;
@@ -820,8 +935,8 @@ const char *SSL_get_cipher_list(SSL *s,int n)
 	return(c->name);
 	}
 
-/** specify the ciphers to be used by defaut by the SSL_CTX */
-int SSL_CTX_set_cipher_list(SSL_CTX *ctx,char *str)
+/** 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;
 	
@@ -832,7 +947,7 @@ int SSL_CTX_set_cipher_list(SSL_CTX *ctx,char *str)
 	}
 
 /** specify the ciphers to be used by the SSL */
-int SSL_set_cipher_list(SSL *s,char *str)
+int SSL_set_cipher_list(SSL *s,const char *str)
 	{
 	STACK_OF(SSL_CIPHER) *sk;
 	
@@ -1021,6 +1136,7 @@ SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
 		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);
@@ -1112,7 +1228,7 @@ void SSL_CTX_free(SSL_CTX *a)
 		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);
-	Free((char *)a);
+	Free(a);
 	}
 
 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
@@ -1120,10 +1236,20 @@ void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
 	ctx->default_passwd_callback=cb;
 	}
 
-void SSL_CTX_set_cert_verify_cb(SSL_CTX *ctx,int (*cb)(),char *arg)
+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;
+	ctx->app_verify_arg=arg; /* never used */
 	}
 
 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
@@ -1229,10 +1355,8 @@ void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
 		emask|=SSL_aDSS;
 		}
 
-#ifdef SSL_ALLOW_ADH
 	mask|=SSL_aNULL;
 	emask|=SSL_aNULL;
-#endif
 
 	c->mask=mask;
 	c->export_mask=emask;
@@ -1244,13 +1368,13 @@ X509 *ssl_get_server_send_cert(SSL *s)
 	{
 	unsigned long alg,mask,kalg;
 	CERT *c;
-	int i,export;
+	int i,is_export;
 
 	c=s->cert;
 	ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
 	alg=s->s3->tmp.new_cipher->algorithms;
-	export=SSL_IS_EXPORT(alg);
-	mask=export?c->export_mask:c->mask;
+	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)
@@ -1390,6 +1514,15 @@ int SSL_get_error(SSL *s,int i)
 		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))
 			{
@@ -1407,6 +1540,7 @@ int SSL_get_error(SSL *s,int i)
 		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))
 			{
@@ -1492,7 +1626,7 @@ SSL_METHOD *ssl_bad_method(int ver)
 	return(NULL);
 	}
 
-char *SSL_get_version(SSL *s)
+const char *SSL_get_version(SSL *s)
 	{
 	if (s->version == TLS1_VERSION)
 		return("TLSv1");
@@ -1508,7 +1642,7 @@ SSL *SSL_dup(SSL *s)
 	{
 	STACK_OF(X509_NAME) *sk;
 	X509_NAME *xn;
-        SSL *ret;
+	SSL *ret;
 	int i;
 		 
 	if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
@@ -1658,9 +1792,9 @@ EVP_PKEY *SSL_get_privatekey(SSL *s)
 
 SSL_CIPHER *SSL_get_current_cipher(SSL *s)
 	{
-        if ((s->session != NULL) && (s->session->cipher != NULL))
-                return(s->session->cipher);
-        return(NULL);
+	if ((s->session != NULL) && (s->session->cipher != NULL))
+		return(s->session->cipher);
+	return(NULL);
 	}
 
 int ssl_init_wbio_buffer(SSL *s,int push)
@@ -1679,7 +1813,7 @@ int ssl_init_wbio_buffer(SSL *s,int push)
 		if (s->bbio == s->wbio)
 			s->wbio=BIO_pop(s->wbio);
 		}
-	BIO_reset(bbio);
+	(void)BIO_reset(bbio);
 /*	if (!BIO_set_write_buffer_size(bbio,16*1024)) */
 	if (!BIO_set_read_buffer_size(bbio,1))
 		{
@@ -1796,13 +1930,13 @@ long SSL_get_verify_result(SSL *ssl)
 	return(ssl->verify_result);
 	}
 
-int SSL_get_ex_new_index(long argl,char *argp,int (*new_func)(),
-			 int (*dup_func)(),void (*free_func)())
-        {
+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)
 	{
@@ -1814,13 +1948,13 @@ 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,char *argp,int (*new_func)(),
-			     int (*dup_func)(),void (*free_func)())
-        {
+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)
 	{
@@ -1861,29 +1995,33 @@ int SSL_want(SSL *s)
  */
 
 #ifndef NO_RSA
-void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,int export,
+void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
+							  int is_export,
 							  int keylength))
-    { SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,0,(char *)cb); }
-#endif
+    {
+    SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
+    }
 
-#ifndef NO_RSA
-void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,int export,
-							  int keylength))
-    { SSL_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,0,(char *)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 export \c TRUE if the temp RSA key is for an export ciphersuite.
- * \param keylength if \c export is \c TRUE, then \c keylength is the size of
- * the required key in bits.
+ * \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 export,int keylength)
+RSA *cb(SSL *ssl,int is_export,int keylength)
     {}
 #endif
 
@@ -1894,13 +2032,17 @@ RSA *cb(SSL *ssl,int export,int keylength)
  */
 
 #ifndef NO_DH
-void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int export,
+void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
 							int keylength))
-    { SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,0,(char *)dh); }
+    {
+    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 export,
-							int keylength))
-    { SSL_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,0,(char *)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)