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Add SSL_CTX_get_ciphers()

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Add an accessor for SSL_CTX.

Since libssl was made opaque, there is no way for users to access the
cipher_list, while users can set the cipher_list by
SSL_CTX_set_cipher_list().

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
This commit is contained in:
Kazuki Yamaguchi 2016-04-10 13:18:50 +09:00 committed by Rich Salz
parent 3012e65039
commit 9d5ac9532c
5 changed files with 22 additions and 6 deletions
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15
doc/ssl/SSL_get_ciphers.pod
View file

@ -2,13 +2,14 @@
=head1 NAME
SSL_get_ciphers, SSL_get_cipher_list - get list of available SSL_CIPHERs
SSL_get_ciphers, SSL_CTX_get_ciphers, SSL_get_cipher_list - get list of available SSL_CIPHERs
=head1 SYNOPSIS
#include <openssl/ssl.h>
STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *ssl);
STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx);
STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s);
STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *ssl);
const char *SSL_get_cipher_list(const SSL *ssl, int priority);
@ -19,6 +20,8 @@ SSL_get_ciphers() returns the stack of available SSL_CIPHERs for B<ssl>,
sorted by preference. If B<ssl> is NULL or no ciphers are available, NULL
is returned.
SSL_CTX_get_ciphers() returns the stack of available SSL_CIPHERs for B<ctx>.
SSL_get1_supported_ciphers() returns the stack of enabled SSL_CIPHERs for
B<ssl>, sorted by preference.
The list depends on settings like the cipher list, the supported protocol
@ -43,17 +46,17 @@ is returned.
=head1 NOTES
The details of the ciphers obtained by SSL_get_ciphers(),
The details of the ciphers obtained by SSL_get_ciphers(), SSL_CTX_get_ciphers()
SSL_get1_supported_ciphers() and SSL_get_client_ciphers() can be obtained using
the L<SSL_CIPHER_get_name(3)> family of functions.
Call SSL_get_cipher_list() with B<priority> starting from 0 to obtain the
sorted list of available ciphers, until NULL is returned.
Note: SSL_get_ciphers() and SSL_get_client_ciphers() return a pointer
to an internal cipher stack, which will be freed later on when the SSL
or SSL_SESSION object is freed. Therefore, the calling code B<MUST
NOT> free the return value itself.
Note: SSL_get_ciphers(), SSL_CTX_get_ciphers() and SSL_get_client_ciphers()
return a pointer to an internal cipher stack, which will be freed later on when
the SSL or SSL_SESSION object is freed. Therefore, the calling code B<MUST NOT>
free the return value itself.
The stack returned by SSL_get1_supported_ciphers() should be freed using
sk_SSL_CIPHER_free().

2
doc/ssl/ssl.pod
View file

@ -239,6 +239,8 @@ protocol context defined in the B<SSL_CTX> structure.
=item X509_STORE *B<SSL_CTX_get_cert_store>(SSL_CTX *ctx);
=item STACK *B<SSL_CTX_get_ciphers>(const SSL_CTX *ctx);
=item STACK *B<SSL_CTX_get_client_CA_list>(const SSL_CTX *ctx);
=item int (*B<SSL_CTX_get_client_cert_cb>(SSL_CTX *ctx))(SSL *ssl, X509 **x509, EVP_PKEY **pkey);

1
include/openssl/ssl.h
View file

@ -1683,6 +1683,7 @@ __owur const SSL_METHOD *DTLS_server_method(void); /* DTLS 1.0 and 1.2 */
__owur const SSL_METHOD *DTLS_client_method(void); /* DTLS 1.0 and 1.2 */
__owur STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s);
__owur STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx);
__owur STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s);
__owur STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s);

9
ssl/ssl_lib.c
View file

@ -1999,6 +1999,15 @@ const char *SSL_get_cipher_list(const SSL *s, int n)
return (c->name);
}
/** return a STACK of the ciphers available for the SSL_CTX and in order of
* preference */
STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
{
if (ctx != NULL)
return ctx->cipher_list;
return NULL;
}
/** specify the ciphers to be used by default by the SSL_CTX */
int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
{

1
util/libssl.num
View file

@ -392,3 +392,4 @@ SSL_CTX_set0_ctlog_store 391 1_1_0 EXIST::FUNCTION:CT
SSL_CTX_get0_ctlog_store 392 1_1_0 EXIST::FUNCTION:CT
SSL_enable_ct 393 1_1_0 EXIST::FUNCTION:CT
SSL_CTX_enable_ct 394 1_1_0 EXIST::FUNCTION:CT
SSL_CTX_get_ciphers 395 1_1_0 EXIST::FUNCTION