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ITS#9521 Set TLSv1.3 cipher suites for OpenSSL 1.1

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This commit is contained in:
Howard Chu 2021-04-09 15:59:22 +01:00
parent dde1bdf48f
commit b72bce2400
1 changed files with 55 additions and 8 deletions
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63
libraries/libldap/tls_o.c
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@ -275,6 +275,51 @@ tlso_ctx_free ( tls_ctx *ctx )
SSL_CTX_free( c );
}
static char *
tlso_stecpy( char *dst, const char *src, const char *end )
{
while ( dst < end && *src )
*dst++ = *src++;
if ( dst < end )
*dst = '\0';
return dst;
}
/* OpenSSL 1.1 uses a separate API for TLS1.3 ciphersuites.
* Try to find any TLS1.3 ciphers in the given list of suites.
*/
static void
tlso_ctx_cipher13( tlso_ctx *ctx, char *suites )
{
char tls13_suites[1024], *ts = tls13_suites, *te = tls13_suites + sizeof(tls13_suites);
char *ptr, *colon, *nptr;
char sname[128];
int ret;
*ts = '\0';
for ( ptr = suites;; ) {
colon = strchr( ptr, ':' );
if ( colon ) {
int len = colon - ptr;
if ( len > 63 ) len = 63;
strncpy( sname, ptr, len );
sname[len] = '\0';
nptr = sname;
} else {
nptr = ptr;
}
if ( SSL_CTX_set_ciphersuites( ctx, nptr )) {
if ( tls13_suites[0] )
ts = tlso_stecpy( ts, ":", te );
ts = tlso_stecpy( ts, sname, te );
}
if ( !colon || ts >= te )
break;
ptr = colon+1;
}
SSL_CTX_set_ciphersuites( ctx, tls13_suites );
}
/*
* initialize a new TLS context
*/
@ -322,14 +367,16 @@ tlso_ctx_init( struct ldapoptions *lo, struct ldaptls *lt, int is_server )
SSL_CTX_clear_options( ctx, SSL_OP_NO_SSLv3 );
}
if ( lo->ldo_tls_ciphersuite &&
!SSL_CTX_set_cipher_list( ctx, lt->lt_ciphersuite ) )
{
Debug1( LDAP_DEBUG_ANY,
"TLS: could not set cipher list %s.\n",
lo->ldo_tls_ciphersuite );
tlso_report_error();
return -1;
if ( lo->ldo_tls_ciphersuite ) {
tlso_ctx_cipher13( ctx, lt->lt_ciphersuite );
if ( !SSL_CTX_set_cipher_list( ctx, lt->lt_ciphersuite ) )
{
Debug1( LDAP_DEBUG_ANY,
"TLS: could not set cipher list %s.\n",
lo->ldo_tls_ciphersuite );
tlso_report_error();
return -1;
}
}
if ( lo->ldo_tls_cacertfile == NULL && lo->ldo_tls_cacertdir == NULL &&