Remove SRP and Kerberos support from libssl. These are complex protocols

all on their own and we can't effectively maintain them without using them,
which we don't. If the need arises, the code can be resurrected.

1 files changed, 0 insertions, 516 deletions

diff --git a/lib/libssl/src/ssl/tls_srp.c b/lib/libssl/src/ssl/tls_srp.c
deleted file mode 100644
index e03eabcef66..00000000000
--- a/lib/libssl/src/ssl/tls_srp.c
+++ /dev/null
@@ -1,516 +0,0 @@
-/* ssl/tls_srp.c */
-/* Written by Christophe Renou (christophe.renou@edelweb.fr) with
- * the precious help of Peter Sylvester (peter.sylvester@edelweb.fr)
- * for the EdelKey project and contributed to the OpenSSL project 2004.
- */
-/* ====================================================================
- * Copyright (c) 2004-2011 The OpenSSL Project.  All rights reserved.
- *
- * 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 above 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 acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- *    endorse or promote products derived from this software without
- *    prior written permission. For written permission, please contact
- *    licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- *    nor may "OpenSSL" appear in their names without prior written
- *    permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- *    acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED 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 OpenSSL PROJECT OR
- * ITS 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.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com).  This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
-#include "ssl_locl.h"
-#ifndef OPENSSL_NO_SRP
-
-#include <openssl/rand.h>
-#include <openssl/srp.h>
-#include <openssl/err.h>
-
-int
-SSL_CTX_SRP_CTX_free(struct ssl_ctx_st *ctx)
-{
-	if (ctx == NULL)
-		return 0;
-	free(ctx->srp_ctx.login);
-	BN_free(ctx->srp_ctx.N);
-	BN_free(ctx->srp_ctx.g);
-	BN_free(ctx->srp_ctx.s);
-	BN_free(ctx->srp_ctx.B);
-	BN_free(ctx->srp_ctx.A);
-	BN_free(ctx->srp_ctx.a);
-	BN_free(ctx->srp_ctx.b);
-	BN_free(ctx->srp_ctx.v);
-	ctx->srp_ctx.TLS_ext_srp_username_callback = NULL;
-	ctx->srp_ctx.SRP_cb_arg = NULL;
-	ctx->srp_ctx.SRP_verify_param_callback = NULL;
-	ctx->srp_ctx.SRP_give_srp_client_pwd_callback = NULL;
-	ctx->srp_ctx.N = NULL;
-	ctx->srp_ctx.g = NULL;
-	ctx->srp_ctx.s = NULL;
-	ctx->srp_ctx.B = NULL;
-	ctx->srp_ctx.A = NULL;
-	ctx->srp_ctx.a = NULL;
-	ctx->srp_ctx.b = NULL;
-	ctx->srp_ctx.v = NULL;
-	ctx->srp_ctx.login = NULL;
-	ctx->srp_ctx.info = NULL;
-	ctx->srp_ctx.strength = SRP_MINIMAL_N;
-	ctx->srp_ctx.srp_Mask = 0;
-	return (1);
-}
-
-int
-SSL_SRP_CTX_free(struct ssl_st *s)
-{
-	if (s == NULL)
-		return 0;
-	free(s->srp_ctx.login);
-	BN_free(s->srp_ctx.N);
-	BN_free(s->srp_ctx.g);
-	BN_free(s->srp_ctx.s);
-	BN_free(s->srp_ctx.B);
-	BN_free(s->srp_ctx.A);
-	BN_free(s->srp_ctx.a);
-	BN_free(s->srp_ctx.b);
-	BN_free(s->srp_ctx.v);
-	s->srp_ctx.TLS_ext_srp_username_callback = NULL;
-	s->srp_ctx.SRP_cb_arg = NULL;
-	s->srp_ctx.SRP_verify_param_callback = NULL;
-	s->srp_ctx.SRP_give_srp_client_pwd_callback = NULL;
-	s->srp_ctx.N = NULL;
-	s->srp_ctx.g = NULL;
-	s->srp_ctx.s = NULL;
-	s->srp_ctx.B = NULL;
-	s->srp_ctx.A = NULL;
-	s->srp_ctx.a = NULL;
-	s->srp_ctx.b = NULL;
-	s->srp_ctx.v = NULL;
-	s->srp_ctx.login = NULL;
-	s->srp_ctx.info = NULL;
-	s->srp_ctx.strength = SRP_MINIMAL_N;
-	s->srp_ctx.srp_Mask = 0;
-	return (1);
-}
-
-int
-SSL_SRP_CTX_init(struct ssl_st *s)
-{
-	SSL_CTX *ctx;
-
-	if ((s == NULL) || ((ctx = s->ctx) == NULL))
-		return 0;
-	s->srp_ctx.SRP_cb_arg = ctx->srp_ctx.SRP_cb_arg;
-	/* set client Hello login callback */
-	s->srp_ctx.TLS_ext_srp_username_callback = ctx->srp_ctx.TLS_ext_srp_username_callback;
-	/* set SRP N/g param callback for verification */
-	s->srp_ctx.SRP_verify_param_callback = ctx->srp_ctx.SRP_verify_param_callback;
-	/* set SRP client passwd callback */
-	s->srp_ctx.SRP_give_srp_client_pwd_callback = ctx->srp_ctx.SRP_give_srp_client_pwd_callback;
-
-	s->srp_ctx.N = NULL;
-	s->srp_ctx.g = NULL;
-	s->srp_ctx.s = NULL;
-	s->srp_ctx.B = NULL;
-	s->srp_ctx.A = NULL;
-	s->srp_ctx.a = NULL;
-	s->srp_ctx.b = NULL;
-	s->srp_ctx.v = NULL;
-	s->srp_ctx.login = NULL;
-	s->srp_ctx.info = ctx->srp_ctx.info;
-	s->srp_ctx.strength = ctx->srp_ctx.strength;
-
-	if (((ctx->srp_ctx.N != NULL) &&
-	    ((s->srp_ctx.N = BN_dup(ctx->srp_ctx.N)) == NULL)) ||
-	    ((ctx->srp_ctx.g != NULL) &&
-	    ((s->srp_ctx.g = BN_dup(ctx->srp_ctx.g)) == NULL)) ||
-	    ((ctx->srp_ctx.s != NULL) &&
-	    ((s->srp_ctx.s = BN_dup(ctx->srp_ctx.s)) == NULL)) ||
-	    ((ctx->srp_ctx.B != NULL) &&
-	    ((s->srp_ctx.B = BN_dup(ctx->srp_ctx.B)) == NULL)) ||
-	    ((ctx->srp_ctx.A != NULL) &&
-	    ((s->srp_ctx.A = BN_dup(ctx->srp_ctx.A)) == NULL)) ||
-	    ((ctx->srp_ctx.a != NULL) &&
-	    ((s->srp_ctx.a = BN_dup(ctx->srp_ctx.a)) == NULL)) ||
-	    ((ctx->srp_ctx.v != NULL) &&
-	    ((s->srp_ctx.v = BN_dup(ctx->srp_ctx.v)) == NULL)) ||
-	    ((ctx->srp_ctx.b != NULL) &&
-	    ((s->srp_ctx.b = BN_dup(ctx->srp_ctx.b)) == NULL))) {
-		SSLerr(SSL_F_SSL_SRP_CTX_INIT, ERR_R_BN_LIB);
-		goto err;
-	}
-	if ((ctx->srp_ctx.login != NULL) &&
-	    ((s->srp_ctx.login = BUF_strdup(ctx->srp_ctx.login)) == NULL)) {
-		SSLerr(SSL_F_SSL_SRP_CTX_INIT, ERR_R_INTERNAL_ERROR);
-		goto err;
-	}
-	s->srp_ctx.srp_Mask = ctx->srp_ctx.srp_Mask;
-
-	return (1);
-err:
-	free(s->srp_ctx.login);
-	BN_free(s->srp_ctx.N);
-	BN_free(s->srp_ctx.g);
-	BN_free(s->srp_ctx.s);
-	BN_free(s->srp_ctx.B);
-	BN_free(s->srp_ctx.A);
-	BN_free(s->srp_ctx.a);
-	BN_free(s->srp_ctx.b);
-	BN_free(s->srp_ctx.v);
-	return (0);
-}
-
-int
-SSL_CTX_SRP_CTX_init(struct ssl_ctx_st *ctx)
-{
-	if (ctx == NULL)
-		return 0;
-
-	ctx->srp_ctx.SRP_cb_arg = NULL;
-	/* set client Hello login callback */
-	ctx->srp_ctx.TLS_ext_srp_username_callback = NULL;
-	/* set SRP N/g param callback for verification */
-	ctx->srp_ctx.SRP_verify_param_callback = NULL;
-	/* set SRP client passwd callback */
-	ctx->srp_ctx.SRP_give_srp_client_pwd_callback = NULL;
-
-	ctx->srp_ctx.N = NULL;
-	ctx->srp_ctx.g = NULL;
-	ctx->srp_ctx.s = NULL;
-	ctx->srp_ctx.B = NULL;
-	ctx->srp_ctx.A = NULL;
-	ctx->srp_ctx.a = NULL;
-	ctx->srp_ctx.b = NULL;
-	ctx->srp_ctx.v = NULL;
-	ctx->srp_ctx.login = NULL;
-	ctx->srp_ctx.srp_Mask = 0;
-	ctx->srp_ctx.info = NULL;
-	ctx->srp_ctx.strength = SRP_MINIMAL_N;
-
-	return (1);
-}
-
-/* server side */
-int
-SSL_srp_server_param_with_username(SSL *s, int *ad)
-{
-	unsigned char b[SSL_MAX_MASTER_KEY_LENGTH];
-	int al;
-
-	*ad = SSL_AD_UNKNOWN_PSK_IDENTITY;
-	if ((s->srp_ctx.TLS_ext_srp_username_callback !=NULL) &&
-	    ((al = s->srp_ctx.TLS_ext_srp_username_callback(s, ad,
-	    s->srp_ctx.SRP_cb_arg)) != SSL_ERROR_NONE))
-		return al;
-
-	*ad = SSL_AD_INTERNAL_ERROR;
-	if ((s->srp_ctx.N == NULL) || (s->srp_ctx.g == NULL) ||
-	    (s->srp_ctx.s == NULL) || (s->srp_ctx.v == NULL))
-		return SSL3_AL_FATAL;
-
-	if (RAND_bytes(b, sizeof(b)) <= 0)
-		return SSL3_AL_FATAL;
-	s->srp_ctx.b = BN_bin2bn(b, sizeof(b), NULL);
-	OPENSSL_cleanse(b, sizeof(b));
-
-	/* Calculate:  B = (kv + g^b) % N  */
-
-	return ((s->srp_ctx.B = SRP_Calc_B(s->srp_ctx.b, s->srp_ctx.N, s->srp_ctx.g, s->srp_ctx.v)) != NULL) ?  SSL_ERROR_NONE : SSL3_AL_FATAL;
-}
-
-/* If the server just has the raw password, make up a verifier entry on the fly */
-int
-SSL_set_srp_server_param_pw(SSL *s, const char *user, const char *pass, const char *grp)
-{
-	SRP_gN *GN = SRP_get_default_gN(grp);
-	if (GN == NULL)
-		return -1;
-	s->srp_ctx.N = BN_dup(GN->N);
-	s->srp_ctx.g = BN_dup(GN->g);
-	if (s->srp_ctx.v != NULL) {
-		BN_clear_free(s->srp_ctx.v);
-		s->srp_ctx.v = NULL;
-	}
-	if (s->srp_ctx.s != NULL) {
-		BN_clear_free(s->srp_ctx.s);
-		s->srp_ctx.s = NULL;
-	}
-	if (!SRP_create_verifier_BN(user, pass, &s->srp_ctx.s, &s->srp_ctx.v,
-	    GN->N, GN->g))
-		return -1;
-
-	return 1;
-}
-
-int
-SSL_set_srp_server_param(SSL *s, const BIGNUM *N, const BIGNUM *g,
-    BIGNUM *sa, BIGNUM *v, char *info)
-{
-	if (N != NULL) {
-		if (s->srp_ctx.N != NULL) {
-			if (!BN_copy(s->srp_ctx.N, N)) {
-				BN_free(s->srp_ctx.N);
-				s->srp_ctx.N = NULL;
-			}
-		} else
-			s->srp_ctx.N = BN_dup(N);
-	}
-	if (g != NULL) {
-		if (s->srp_ctx.g != NULL) {
-			if (!BN_copy(s->srp_ctx.g, g)) {
-				BN_free(s->srp_ctx.g);
-				s->srp_ctx.g = NULL;
-			}
-		} else
-			s->srp_ctx.g = BN_dup(g);
-	}
-	if (sa != NULL) {
-		if (s->srp_ctx.s != NULL) {
-			if (!BN_copy(s->srp_ctx.s, sa)) {
-				BN_free(s->srp_ctx.s);
-				s->srp_ctx.s = NULL;
-			}
-		} else
-			s->srp_ctx.s = BN_dup(sa);
-	}
-	if (v != NULL) {
-		if (s->srp_ctx.v != NULL) {
-			if (!BN_copy(s->srp_ctx.v, v)) {
-				BN_free(s->srp_ctx.v);
-				s->srp_ctx.v = NULL;
-			}
-		} else
-			s->srp_ctx.v = BN_dup(v);
-	}
-	s->srp_ctx.info = info;
-
-	if (!(s->srp_ctx.N) || !(s->srp_ctx.g) ||
-	    !(s->srp_ctx.s) || !(s->srp_ctx.v))
-		return -1;
-
-	return 1;
-}
-
-int
-SRP_generate_server_master_secret(SSL *s, unsigned char *master_key)
-{
-	BIGNUM *K = NULL, *u = NULL;
-	int ret = -1, tmp_len;
-	unsigned char *tmp = NULL;
-
-	if (!SRP_Verify_A_mod_N(s->srp_ctx.A, s->srp_ctx.N))
-		goto err;
-	if (!(u = SRP_Calc_u(s->srp_ctx.A, s->srp_ctx.B, s->srp_ctx.N)))
-		goto err;
-	if (!(K = SRP_Calc_server_key(s->srp_ctx.A, s->srp_ctx.v, u, s->srp_ctx.b, s->srp_ctx.N)))
-		goto err;
-
-	tmp_len = BN_num_bytes(K);
-	if ((tmp = malloc(tmp_len)) == NULL)
-		goto err;
-	BN_bn2bin(K, tmp);
-	ret = s->method->ssl3_enc->generate_master_secret(s, master_key, tmp, tmp_len);
-err:
-	if (tmp) {
-		OPENSSL_cleanse(tmp, tmp_len);
-		free(tmp);
-	}
-	BN_clear_free(K);
-	BN_clear_free(u);
-	return ret;
-}
-
-/* client side */
-int
-SRP_generate_client_master_secret(SSL *s, unsigned char *master_key)
-{
-	BIGNUM *x = NULL, *u = NULL, *K = NULL;
-	int ret = -1, tmp_len;
-	char *passwd = NULL;
-	unsigned char *tmp = NULL;
-
-	/* Checks if b % n == 0
-	 */
-	if (SRP_Verify_B_mod_N(s->srp_ctx.B, s->srp_ctx.N) == 0)
-		goto err;
-	if (!(u = SRP_Calc_u(s->srp_ctx.A, s->srp_ctx.B, s->srp_ctx.N)))
-		goto err;
-	if (s->srp_ctx.SRP_give_srp_client_pwd_callback == NULL)
-		goto err;
-	if (!(passwd = s->srp_ctx.SRP_give_srp_client_pwd_callback(s,
-	    s->srp_ctx.SRP_cb_arg)))
-		goto err;
-	if (!(x = SRP_Calc_x(s->srp_ctx.s, s->srp_ctx.login, passwd)))
-		goto err;
-	if (!(K = SRP_Calc_client_key(s->srp_ctx.N, s->srp_ctx.B, s->srp_ctx.g,
-	    x, s->srp_ctx.a, u)))
-		goto err;
-
-	tmp_len = BN_num_bytes(K);
-	if ((tmp = malloc(tmp_len)) == NULL)
-		goto err;
-	BN_bn2bin(K, tmp);
-	ret = s->method->ssl3_enc->generate_master_secret(s, master_key,
-	    tmp, tmp_len);
-err:
-	if (tmp) {
-		OPENSSL_cleanse(tmp, tmp_len);
-		free(tmp);
-	}
-	BN_clear_free(K);
-	BN_clear_free(x);
-	if (passwd) {
-		OPENSSL_cleanse(passwd, strlen(passwd));
-		free(passwd);
-	}
-	BN_clear_free(u);
-	return ret;
-}
-
-int
-SRP_Calc_A_param(SSL *s)
-{
-	unsigned char rnd[SSL_MAX_MASTER_KEY_LENGTH];
-
-	if (BN_num_bits(s->srp_ctx.N) < s->srp_ctx.strength)
-		return -1;
-
-	if (s->srp_ctx.SRP_verify_param_callback ==NULL &&
-	    !SRP_check_known_gN_param(s->srp_ctx.g, s->srp_ctx.N))
-		return -1;
-
-	RAND_bytes(rnd, sizeof(rnd));
-	s->srp_ctx.a = BN_bin2bn(rnd, sizeof(rnd), s->srp_ctx.a);
-	OPENSSL_cleanse(rnd, sizeof(rnd));
-
-	if (!(s->srp_ctx.A = SRP_Calc_A(s->srp_ctx.a, s->srp_ctx.N,
-	    s->srp_ctx.g)))
-		return -1;
-
-	/* We can have a callback to verify SRP param!! */
-	if (s->srp_ctx.SRP_verify_param_callback !=NULL)
-		return s->srp_ctx.SRP_verify_param_callback(s,
-		    s->srp_ctx.SRP_cb_arg);
-
-	return 1;
-}
-
-BIGNUM *
-SSL_get_srp_g(SSL *s)
-{
-	if (s->srp_ctx.g != NULL)
-		return s->srp_ctx.g;
-	return s->ctx->srp_ctx.g;
-}
-
-BIGNUM *
-SSL_get_srp_N(SSL *s)
-{
-	if (s->srp_ctx.N != NULL)
-		return s->srp_ctx.N;
-	return s->ctx->srp_ctx.N;
-}
-
-char *
-SSL_get_srp_username(SSL *s)
-{
-	if (s->srp_ctx.login != NULL)
-		return s->srp_ctx.login;
-	return s->ctx->srp_ctx.login;
-}
-
-char *
-SSL_get_srp_userinfo(SSL *s)
-{
-	if (s->srp_ctx.info != NULL)
-		return s->srp_ctx.info;
-	return s->ctx->srp_ctx.info;
-}
-
-#define tls1_ctx_ctrl ssl3_ctx_ctrl
-#define tls1_ctx_callback_ctrl ssl3_ctx_callback_ctrl
-
-int
-SSL_CTX_set_srp_username(SSL_CTX *ctx, char *name)
-{
-	return tls1_ctx_ctrl(ctx, SSL_CTRL_SET_TLS_EXT_SRP_USERNAME, 0, name);
-}
-
-int
-SSL_CTX_set_srp_password(SSL_CTX *ctx, char *password)
-{
-	return tls1_ctx_ctrl(ctx, SSL_CTRL_SET_TLS_EXT_SRP_PASSWORD, 0, password);
-}
-
-int
-SSL_CTX_set_srp_strength(SSL_CTX *ctx, int strength)
-{
-	return tls1_ctx_ctrl(ctx, SSL_CTRL_SET_TLS_EXT_SRP_STRENGTH, strength,
-	    NULL);
-}
-
-int
-SSL_CTX_set_srp_verify_param_callback(SSL_CTX *ctx, int (*cb)(SSL *, void *))
-{
-	return tls1_ctx_callback_ctrl(ctx, SSL_CTRL_SET_SRP_VERIFY_PARAM_CB,
-	    (void (*)(void))cb);
-}
-
-int
-SSL_CTX_set_srp_cb_arg(SSL_CTX *ctx, void *arg)
-{
-	return tls1_ctx_ctrl(ctx, SSL_CTRL_SET_SRP_ARG, 0, arg);
-}
-
-int
-SSL_CTX_set_srp_username_callback(SSL_CTX *ctx,
-    int (*cb)(SSL *, int *, void *))
-{
-	return tls1_ctx_callback_ctrl(ctx, SSL_CTRL_SET_TLS_EXT_SRP_USERNAME_CB,
-	    (void (*)(void))cb);
-}
-
-int
-SSL_CTX_set_srp_client_pwd_callback(SSL_CTX *ctx, char *(*cb)(SSL *, void *))
-{
-	return tls1_ctx_callback_ctrl(ctx, SSL_CTRL_SET_SRP_GIVE_CLIENT_PWD_CB,
-	    (void (*)(void))cb);
-}
-
-#endif