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Rename some callbacks, fix alignment.

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Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit 0cfefe4b6d)
This commit is contained in:
Dr. Stephen Henson
2014-08-19 14:02:50 +01:00
parent 4164d631bb
commit cf8d6c1000
5 changed files with 106 additions and 99 deletions
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84
ssl/t1_ext.c
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@@ -59,10 +59,9 @@
#ifndef OPENSSL_NO_TLSEXT
/* Find a custom extension from the list */
/* Find a custom extension from the list. */
static custom_ext_method *custom_ext_find(custom_ext_methods *exts,
unsigned short ext_type)
unsigned int ext_type)
{
size_t i;
custom_ext_method *meth = exts->meths;
@@ -84,18 +83,16 @@ void custom_ext_init(custom_ext_methods *exts)
meth->ext_flags = 0;
}
/* pass received custom extension data to the application for parsing */
/* Pass received custom extension data to the application for parsing. */
int custom_ext_parse(SSL *s, int server,
unsigned int ext_type,
const unsigned char *ext_data,
size_t ext_size,
int *al)
unsigned int ext_type,
const unsigned char *ext_data,
size_t ext_size,
int *al)
{
custom_ext_methods *exts = server ? &s->cert->srv_ext : &s->cert->cli_ext;
custom_ext_method *meth;
meth = custom_ext_find(exts, ext_type);
/* If not found or no parse function set, return success */
/* If not found return success */
if (!meth)
return 1;
@@ -117,20 +114,20 @@ int custom_ext_parse(SSL *s, int server,
return 0;
}
meth->ext_flags |= SSL_EXT_FLAG_RECEIVED;
/* If no parse function set return success */
if (!meth->parse_cb)
return 1;
return meth->parse_cb(s, ext_type, ext_data, ext_size, al, meth->parse_arg);
}
/* request custom extension data from the application and add to the
* return buffer
/* Request custom extension data from the application and add to the
* return buffer.
*/
int custom_ext_add(SSL *s, int server,
unsigned char **pret,
unsigned char *limit,
int *al)
unsigned char **pret,
unsigned char *limit,
int *al)
{
custom_ext_methods *exts = server ? &s->cert->srv_ext : &s->cert->cli_ext;
custom_ext_method *meth;
@@ -174,12 +171,12 @@ int custom_ext_add(SSL *s, int server,
memcpy(ret, out, outlen);
ret += outlen;
}
/* We can't send duplicates: code logic should prevent this */
/* We can't send duplicates: code logic should prevent this. */
OPENSSL_assert(!(meth->ext_flags & SSL_EXT_FLAG_SENT));
/* Indicate extension has been sent: this is both a sanity
* check to ensure we don't send duplicate extensions
* and indicates to servers that an extension can be
* sent in ServerHello.
* and indicates that it is not an error if the extension
* is present in ServerHello.
*/
meth->ext_flags |= SSL_EXT_FLAG_SENT;
if (meth->free_cb)
@@ -190,7 +187,6 @@ int custom_ext_add(SSL *s, int server,
}
/* Copy table of custom extensions */
int custom_exts_copy(custom_ext_methods *dst, const custom_ext_methods *src)
{
if (src->meths_count)
@@ -209,16 +205,21 @@ void custom_exts_free(custom_ext_methods *exts)
OPENSSL_free(exts->meths);
}
/* Set callbacks for a custom extension */
/* Set callbacks for a custom extension. */
static int custom_ext_meth_add(custom_ext_methods *exts,
unsigned int ext_type,
custom_ext_add_cb add_cb,
custom_ext_free_cb free_cb,
void *add_arg,
custom_ext_parse_cb parse_cb, void *parse_arg)
unsigned int ext_type,
custom_ext_add_cb add_cb,
custom_ext_free_cb free_cb,
void *add_arg,
custom_ext_parse_cb parse_cb, void *parse_arg)
{
custom_ext_method *meth;
/* Don't add if extension supported internall */
/* Check application error: if add_cb is not set free_cb will never
* be called.
*/
if (!add_cb && free_cb)
return 0;
/* Don't add if extension supported internally. */
if (SSL_extension_supported(ext_type))
return 0;
/* Extension type must fit in 16 bits */
@@ -228,7 +229,7 @@ static int custom_ext_meth_add(custom_ext_methods *exts,
if (custom_ext_find(exts, ext_type))
return 0;
exts->meths = OPENSSL_realloc(exts->meths,
(exts->meths_count + 1) * sizeof(custom_ext_method));
(exts->meths_count + 1) * sizeof(custom_ext_method));
if (!exts->meths)
{
@@ -249,35 +250,34 @@ static int custom_ext_meth_add(custom_ext_methods *exts,
}
/* Application level functions to add custom extension callbacks */
int SSL_CTX_add_client_custom_ext(SSL_CTX *ctx, unsigned int ext_type,
custom_ext_add_cb add_cb,
custom_ext_free_cb free_cb,
void *add_arg,
custom_ext_parse_cb parse_cb, void *parse_arg)
custom_ext_add_cb add_cb,
custom_ext_free_cb free_cb,
void *add_arg,
custom_ext_parse_cb parse_cb, void *parse_arg)
{
return custom_ext_meth_add(&ctx->cert->cli_ext, ext_type,
add_cb, free_cb, add_arg,
parse_cb, parse_arg);
add_cb, free_cb, add_arg,
parse_cb, parse_arg);
}
int SSL_CTX_add_server_custom_ext(SSL_CTX *ctx, unsigned int ext_type,
custom_ext_add_cb add_cb,
custom_ext_free_cb free_cb,
void *add_arg,
custom_ext_parse_cb parse_cb, void *parse_arg)
custom_ext_add_cb add_cb,
custom_ext_free_cb free_cb,
void *add_arg,
custom_ext_parse_cb parse_cb, void *parse_arg)
{
return custom_ext_meth_add(&ctx->cert->srv_ext, ext_type,
add_cb, free_cb, add_arg,
parse_cb, parse_arg);
add_cb, free_cb, add_arg,
parse_cb, parse_arg);
}
int SSL_extension_supported(unsigned int ext_type)
{
/* See if it is a supported internally */
switch(ext_type)
{
/* Internally supported extensions. */
case TLSEXT_TYPE_application_layer_protocol_negotiation:
case TLSEXT_TYPE_ec_point_formats:
case TLSEXT_TYPE_elliptic_curves: