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openssl/ssl/ssl_rsa.c
Зишан Мирза 3ef1b7426b Check file name for not being NULL before opening it 
Fixes #24416

Reviewed-by: Tom Cosgrove <tom.cosgrove@arm.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/25458)
2024-09-26 20:35:26 +02:00

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/*
* Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include "ssl_local.h"
#include "internal/packet.h"
#include <openssl/bio.h>
#include <openssl/objects.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
#include <openssl/pem.h>
static int ssl_set_cert(CERT *c, X509 *x509, SSL_CTX *ctx);
static int ssl_set_pkey(CERT *c, EVP_PKEY *pkey, SSL_CTX *ctx);
#define SYNTHV1CONTEXT (SSL_EXT_TLS1_2_AND_BELOW_ONLY \
| SSL_EXT_CLIENT_HELLO \
| SSL_EXT_TLS1_2_SERVER_HELLO \
| SSL_EXT_IGNORE_ON_RESUMPTION)
#define NAME_PREFIX1 "SERVERINFO FOR "
#define NAME_PREFIX2 "SERVERINFOV2 FOR "
int SSL_use_certificate(SSL *ssl, X509 *x)
{
int rv;
SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
if (sc == NULL)
return 0;
if (x == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
rv = ssl_security_cert(sc, NULL, x, 0, 1);
if (rv != 1) {
ERR_raise(ERR_LIB_SSL, rv);
return 0;
}
return ssl_set_cert(sc->cert, x, SSL_CONNECTION_GET_CTX(sc));
}
int SSL_use_certificate_file(SSL *ssl, const char *file, int type)
{
int j;
BIO *in = NULL;
int ret = 0;
X509 *cert = NULL, *x = NULL;
if (file == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
goto end;
}
in = BIO_new(BIO_s_file());
if (in == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in, file) <= 0) {
ERR_raise(ERR_LIB_SSL, ERR_R_SYS_LIB);
goto end;
}
x = X509_new_ex(ssl->ctx->libctx, ssl->ctx->propq);
if (x == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
goto end;
}
if (type == SSL_FILETYPE_ASN1) {
j = ERR_R_ASN1_LIB;
cert = d2i_X509_bio(in, &x);
} else if (type == SSL_FILETYPE_PEM) {
SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
if (sc == NULL)
goto end;
j = ERR_R_PEM_LIB;
cert = PEM_read_bio_X509(in, &x, sc->default_passwd_callback,
sc->default_passwd_callback_userdata);
} else {
ERR_raise(ERR_LIB_SSL, SSL_R_BAD_SSL_FILETYPE);
goto end;
}
if (cert == NULL) {
ERR_raise(ERR_LIB_SSL, j);
goto end;
}
ret = SSL_use_certificate(ssl, x);
end:
X509_free(x);
BIO_free(in);
return ret;
}
int SSL_use_certificate_ASN1(SSL *ssl, const unsigned char *d, int len)
{
X509 *x;
int ret;
x = X509_new_ex(ssl->ctx->libctx, ssl->ctx->propq);
if (x == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
return 0;
}
if (d2i_X509(&x, &d, (long)len)== NULL) {
X509_free(x);
ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
return 0;
}
ret = SSL_use_certificate(ssl, x);
X509_free(x);
return ret;
}
static int ssl_set_pkey(CERT *c, EVP_PKEY *pkey, SSL_CTX *ctx)
{
size_t i;
if (ssl_cert_lookup_by_pkey(pkey, &i, ctx) == NULL) {
ERR_raise(ERR_LIB_SSL, SSL_R_UNKNOWN_CERTIFICATE_TYPE);
return 0;
}
if (c->pkeys[i].x509 != NULL
&& !X509_check_private_key(c->pkeys[i].x509, pkey))
return 0;
EVP_PKEY_free(c->pkeys[i].privatekey);
EVP_PKEY_up_ref(pkey);
c->pkeys[i].privatekey = pkey;
c->key = &c->pkeys[i];
return 1;
}
int SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey)
{
int ret;
SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
if (sc == NULL)
return 0;
if (pkey == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
ret = ssl_set_pkey(sc->cert, pkey, SSL_CONNECTION_GET_CTX(sc));
return ret;
}
int SSL_use_PrivateKey_file(SSL *ssl, const char *file, int type)
{
int j, ret = 0;
BIO *in = NULL;
EVP_PKEY *pkey = NULL;
if (file == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
goto end;
}
in = BIO_new(BIO_s_file());
if (in == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in, file) <= 0) {
ERR_raise(ERR_LIB_SSL, ERR_R_SYS_LIB);
goto end;
}
if (type == SSL_FILETYPE_PEM) {
SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
if (sc == NULL)
goto end;
j = ERR_R_PEM_LIB;
pkey = PEM_read_bio_PrivateKey_ex(in, NULL,
sc->default_passwd_callback,
sc->default_passwd_callback_userdata,
ssl->ctx->libctx,
ssl->ctx->propq);
} else if (type == SSL_FILETYPE_ASN1) {
j = ERR_R_ASN1_LIB;
pkey = d2i_PrivateKey_ex_bio(in, NULL, ssl->ctx->libctx,
ssl->ctx->propq);
} else {
ERR_raise(ERR_LIB_SSL, SSL_R_BAD_SSL_FILETYPE);
goto end;
}
if (pkey == NULL) {
ERR_raise(ERR_LIB_SSL, j);
goto end;
}
ret = SSL_use_PrivateKey(ssl, pkey);
EVP_PKEY_free(pkey);
end:
BIO_free(in);
return ret;
}
int SSL_use_PrivateKey_ASN1(int type, SSL *ssl, const unsigned char *d,
long len)
{
int ret;
const unsigned char *p;
EVP_PKEY *pkey;
p = d;
if ((pkey = d2i_PrivateKey_ex(type, NULL, &p, (long)len, ssl->ctx->libctx,
ssl->ctx->propq)) == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
return 0;
}
ret = SSL_use_PrivateKey(ssl, pkey);
EVP_PKEY_free(pkey);
return ret;
}
int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x)
{
int rv;
if (x == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
rv = ssl_security_cert(NULL, ctx, x, 0, 1);
if (rv != 1) {
ERR_raise(ERR_LIB_SSL, rv);
return 0;
}
return ssl_set_cert(ctx->cert, x, ctx);
}
static int ssl_set_cert(CERT *c, X509 *x, SSL_CTX *ctx)
{
EVP_PKEY *pkey;
size_t i;
pkey = X509_get0_pubkey(x);
if (pkey == NULL) {
ERR_raise(ERR_LIB_SSL, SSL_R_X509_LIB);
return 0;
}
if (ssl_cert_lookup_by_pkey(pkey, &i, ctx) == NULL) {
ERR_raise(ERR_LIB_SSL, SSL_R_UNKNOWN_CERTIFICATE_TYPE);
return 0;
}
if (i == SSL_PKEY_ECC && !EVP_PKEY_can_sign(pkey)) {
ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
return 0;
}
if (c->pkeys[i].privatekey != NULL) {
/*
* The return code from EVP_PKEY_copy_parameters is deliberately
* ignored. Some EVP_PKEY types cannot do this.
* coverity[check_return]
*/
EVP_PKEY_copy_parameters(pkey, c->pkeys[i].privatekey);
ERR_clear_error();
if (!X509_check_private_key(x, c->pkeys[i].privatekey)) {
/*
* don't fail for a cert/key mismatch, just free current private
* key (when switching to a different cert & key, first this
* function should be used, then ssl_set_pkey
*/
EVP_PKEY_free(c->pkeys[i].privatekey);
c->pkeys[i].privatekey = NULL;
/* clear error queue */
ERR_clear_error();
}
}
X509_free(c->pkeys[i].x509);
X509_up_ref(x);
c->pkeys[i].x509 = x;
c->key = &(c->pkeys[i]);
return 1;
}
int SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file, int type)
{
int j = SSL_R_BAD_VALUE;
BIO *in = NULL;
int ret = 0;
X509 *x = NULL, *cert = NULL;
if (file == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
goto end;
}
in = BIO_new(BIO_s_file());
if (in == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in, file) <= 0) {
ERR_raise(ERR_LIB_SSL, ERR_R_SYS_LIB);
goto end;
}
x = X509_new_ex(ctx->libctx, ctx->propq);
if (x == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
goto end;
}
if (type == SSL_FILETYPE_ASN1) {
j = ERR_R_ASN1_LIB;
cert = d2i_X509_bio(in, &x);
} else if (type == SSL_FILETYPE_PEM) {
j = ERR_R_PEM_LIB;
cert = PEM_read_bio_X509(in, &x, ctx->default_passwd_callback,
ctx->default_passwd_callback_userdata);
} else {
ERR_raise(ERR_LIB_SSL, SSL_R_BAD_SSL_FILETYPE);
goto end;
}
if (cert == NULL) {
ERR_raise(ERR_LIB_SSL, j);
goto end;
}
ret = SSL_CTX_use_certificate(ctx, x);
end:
X509_free(x);
BIO_free(in);
return ret;
}
int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len, const unsigned char *d)
{
X509 *x;
int ret;
x = X509_new_ex(ctx->libctx, ctx->propq);
if (x == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
return 0;
}
if (d2i_X509(&x, &d, (long)len) == NULL) {
X509_free(x);
ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
return 0;
}
ret = SSL_CTX_use_certificate(ctx, x);
X509_free(x);
return ret;
}
int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey)
{
if (pkey == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
return ssl_set_pkey(ctx->cert, pkey, ctx);
}
int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file, int type)
{
int j, ret = 0;
BIO *in = NULL;
EVP_PKEY *pkey = NULL;
if (file == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
goto end;
}
in = BIO_new(BIO_s_file());
if (in == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in, file) <= 0) {
ERR_raise(ERR_LIB_SSL, ERR_R_SYS_LIB);
goto end;
}
if (type == SSL_FILETYPE_PEM) {
j = ERR_R_PEM_LIB;
pkey = PEM_read_bio_PrivateKey_ex(in, NULL,
ctx->default_passwd_callback,
ctx->default_passwd_callback_userdata,
ctx->libctx, ctx->propq);
} else if (type == SSL_FILETYPE_ASN1) {
j = ERR_R_ASN1_LIB;
pkey = d2i_PrivateKey_ex_bio(in, NULL, ctx->libctx, ctx->propq);
} else {
ERR_raise(ERR_LIB_SSL, SSL_R_BAD_SSL_FILETYPE);
goto end;
}
if (pkey == NULL) {
ERR_raise(ERR_LIB_SSL, j);
goto end;
}
ret = SSL_CTX_use_PrivateKey(ctx, pkey);
EVP_PKEY_free(pkey);
end:
BIO_free(in);
return ret;
}
int SSL_CTX_use_PrivateKey_ASN1(int type, SSL_CTX *ctx,
const unsigned char *d, long len)
{
int ret;
const unsigned char *p;
EVP_PKEY *pkey;
p = d;
if ((pkey = d2i_PrivateKey_ex(type, NULL, &p, (long)len, ctx->libctx,
ctx->propq)) == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
return 0;
}
ret = SSL_CTX_use_PrivateKey(ctx, pkey);
EVP_PKEY_free(pkey);
return ret;
}
/*
* Read a file that contains our certificate in "PEM" format, possibly
* followed by a sequence of CA certificates that should be sent to the peer
* in the Certificate message.
*/
static int use_certificate_chain_file(SSL_CTX *ctx, SSL *ssl, const char *file)
{
BIO *in = NULL;
int ret = 0;
X509 *x = NULL;
pem_password_cb *passwd_callback;
void *passwd_callback_userdata;
SSL_CTX *real_ctx = (ssl == NULL) ? ctx : ssl->ctx;
if (ctx == NULL && ssl == NULL)
return 0;
ERR_clear_error(); /* clear error stack for
* SSL_CTX_use_certificate() */
if (ctx != NULL) {
passwd_callback = ctx->default_passwd_callback;
passwd_callback_userdata = ctx->default_passwd_callback_userdata;
} else {
SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
if (sc == NULL)
return 0;
passwd_callback = sc->default_passwd_callback;
passwd_callback_userdata = sc->default_passwd_callback_userdata;
}
if (file == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
goto end;
}
in = BIO_new(BIO_s_file());
if (in == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in, file) <= 0) {
ERR_raise(ERR_LIB_SSL, ERR_R_SYS_LIB);
goto end;
}
x = X509_new_ex(real_ctx->libctx, real_ctx->propq);
if (x == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
goto end;
}
if (PEM_read_bio_X509_AUX(in, &x, passwd_callback,
passwd_callback_userdata) == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_PEM_LIB);
goto end;
}
if (ctx)
ret = SSL_CTX_use_certificate(ctx, x);
else
ret = SSL_use_certificate(ssl, x);
if (ERR_peek_error() != 0)
ret = 0; /* Key/certificate mismatch doesn't imply
* ret==0 ... */
if (ret) {
/*
* If we could set up our certificate, now proceed to the CA
* certificates.
*/
X509 *ca;
int r;
unsigned long err;
if (ctx)
r = SSL_CTX_clear_chain_certs(ctx);
else
r = SSL_clear_chain_certs(ssl);
if (r == 0) {
ret = 0;
goto end;
}
while (1) {
ca = X509_new_ex(real_ctx->libctx, real_ctx->propq);
if (ca == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
goto end;
}
if (PEM_read_bio_X509(in, &ca, passwd_callback,
passwd_callback_userdata) != NULL) {
if (ctx)
r = SSL_CTX_add0_chain_cert(ctx, ca);
else
r = SSL_add0_chain_cert(ssl, ca);
/*
* Note that we must not free ca if it was successfully added to
* the chain (while we must free the main certificate, since its
* reference count is increased by SSL_CTX_use_certificate).
*/
if (!r) {
X509_free(ca);
ret = 0;
goto end;
}
} else {
X509_free(ca);
break;
}
}
/* When the while loop ends, it's usually just EOF. */
err = ERR_peek_last_error();
if (ERR_GET_LIB(err) == ERR_LIB_PEM
&& ERR_GET_REASON(err) == PEM_R_NO_START_LINE)
ERR_clear_error();
else
ret = 0; /* some real error */
}
end:
X509_free(x);
BIO_free(in);
return ret;
}
int SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx, const char *file)
{
return use_certificate_chain_file(ctx, NULL, file);
}
int SSL_use_certificate_chain_file(SSL *ssl, const char *file)
{
return use_certificate_chain_file(NULL, ssl, file);
}
static int serverinfo_find_extension(const unsigned char *serverinfo,
size_t serverinfo_length,
unsigned int extension_type,
const unsigned char **extension_data,
size_t *extension_length)
{
PACKET pkt, data;
*extension_data = NULL;
*extension_length = 0;
if (serverinfo == NULL || serverinfo_length == 0)
return -1;
if (!PACKET_buf_init(&pkt, serverinfo, serverinfo_length))
return -1;
for (;;) {
unsigned int type = 0;
unsigned long context = 0;
/* end of serverinfo */
if (PACKET_remaining(&pkt) == 0)
return 0; /* Extension not found */
if (!PACKET_get_net_4(&pkt, &context)
|| !PACKET_get_net_2(&pkt, &type)
|| !PACKET_get_length_prefixed_2(&pkt, &data))
return -1;
if (type == extension_type) {
*extension_data = PACKET_data(&data);
*extension_length = PACKET_remaining(&data);
return 1; /* Success */
}
}
/* Unreachable */
}
static int serverinfoex_srv_parse_cb(SSL *s, unsigned int ext_type,
unsigned int context,
const unsigned char *in,
size_t inlen, X509 *x, size_t chainidx,
int *al, void *arg)
{
if (inlen != 0) {
*al = SSL_AD_DECODE_ERROR;
return 0;
}
return 1;
}
static int serverinfo_srv_parse_cb(SSL *s, unsigned int ext_type,
const unsigned char *in,
size_t inlen, int *al, void *arg)
{
return serverinfoex_srv_parse_cb(s, ext_type, 0, in, inlen, NULL, 0, al,
arg);
}
static int serverinfoex_srv_add_cb(SSL *s, unsigned int ext_type,
unsigned int context,
const unsigned char **out,
size_t *outlen, X509 *x, size_t chainidx,
int *al, void *arg)
{
const unsigned char *serverinfo = NULL;
size_t serverinfo_length = 0;
SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
if (sc == NULL) {
*al = SSL_AD_INTERNAL_ERROR;
return -1;
}
/* We only support extensions for the first Certificate */
if ((context & SSL_EXT_TLS1_3_CERTIFICATE) != 0 && chainidx > 0)
return 0;
/* Is there serverinfo data for the chosen server cert? */
if ((ssl_get_server_cert_serverinfo(sc, &serverinfo,
&serverinfo_length)) != 0) {
/* Find the relevant extension from the serverinfo */
int retval = serverinfo_find_extension(serverinfo, serverinfo_length,
ext_type, out, outlen);
if (retval == -1) {
*al = SSL_AD_INTERNAL_ERROR;
return -1; /* Error */
}
if (retval == 0)
return 0; /* No extension found, don't send extension */
return 1; /* Send extension */
}
return 0; /* No serverinfo data found, don't send
* extension */
}
static int serverinfo_srv_add_cb(SSL *s, unsigned int ext_type,
const unsigned char **out, size_t *outlen,
int *al, void *arg)
{
return serverinfoex_srv_add_cb(s, ext_type, 0, out, outlen, NULL, 0, al,
arg);
}
/*
* With a NULL context, this function just checks that the serverinfo data
* parses correctly. With a non-NULL context, it registers callbacks for
* the included extensions.
*/
static int serverinfo_process_buffer(unsigned int version,
const unsigned char *serverinfo,
size_t serverinfo_length, SSL_CTX *ctx)
{
PACKET pkt;
if (serverinfo == NULL || serverinfo_length == 0)
return 0;
if (version != SSL_SERVERINFOV1 && version != SSL_SERVERINFOV2)
return 0;
if (!PACKET_buf_init(&pkt, serverinfo, serverinfo_length))
return 0;
while (PACKET_remaining(&pkt)) {
unsigned long context = 0;
unsigned int ext_type = 0;
PACKET data;
if ((version == SSL_SERVERINFOV2 && !PACKET_get_net_4(&pkt, &context))
|| !PACKET_get_net_2(&pkt, &ext_type)
|| !PACKET_get_length_prefixed_2(&pkt, &data))
return 0;
if (ctx == NULL)
continue;
/*
* The old style custom extensions API could be set separately for
* server/client, i.e. you could set one custom extension for a client,
* and *for the same extension in the same SSL_CTX* you could set a
* custom extension for the server as well. It seems quite weird to be
* setting a custom extension for both client and server in a single
* SSL_CTX - but theoretically possible. This isn't possible in the
* new API. Therefore, if we have V1 serverinfo we use the old API. We
* also use the old API even if we have V2 serverinfo but the context
* looks like an old style <= TLSv1.2 extension.
*/
if (version == SSL_SERVERINFOV1 || context == SYNTHV1CONTEXT) {
if (!SSL_CTX_add_server_custom_ext(ctx, ext_type,
serverinfo_srv_add_cb,
NULL, NULL,
serverinfo_srv_parse_cb,
NULL))
return 0;
} else {
if (!SSL_CTX_add_custom_ext(ctx, ext_type, context,
serverinfoex_srv_add_cb,
NULL, NULL,
serverinfoex_srv_parse_cb,
NULL))
return 0;
}
}
return 1;
}
static size_t extension_contextoff(unsigned int version)
{
return version == SSL_SERVERINFOV1 ? 4 : 0;
}
static size_t extension_append_length(unsigned int version, size_t extension_length)
{
return extension_length + extension_contextoff(version);
}
static void extension_append(unsigned int version,
const unsigned char *extension,
const size_t extension_length,
unsigned char *serverinfo)
{
const size_t contextoff = extension_contextoff(version);
if (contextoff > 0) {
/* We know this only uses the last 2 bytes */
serverinfo[0] = 0;
serverinfo[1] = 0;
serverinfo[2] = (SYNTHV1CONTEXT >> 8) & 0xff;
serverinfo[3] = SYNTHV1CONTEXT & 0xff;
}
memcpy(serverinfo + contextoff, extension, extension_length);
}
int SSL_CTX_use_serverinfo_ex(SSL_CTX *ctx, unsigned int version,
const unsigned char *serverinfo,
size_t serverinfo_length)
{
unsigned char *new_serverinfo = NULL;
if (ctx == NULL || serverinfo == NULL || serverinfo_length == 0) {
ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
if (version == SSL_SERVERINFOV1) {
/*
* Convert serverinfo version v1 to v2 and call yourself recursively
* over the converted serverinfo.
*/
const size_t sinfo_length = extension_append_length(SSL_SERVERINFOV1,
serverinfo_length);
unsigned char *sinfo;
int ret;
sinfo = OPENSSL_malloc(sinfo_length);
if (sinfo == NULL)
return 0;
extension_append(SSL_SERVERINFOV1, serverinfo, serverinfo_length, sinfo);
ret = SSL_CTX_use_serverinfo_ex(ctx, SSL_SERVERINFOV2, sinfo,
sinfo_length);
OPENSSL_free(sinfo);
return ret;
}
if (!serverinfo_process_buffer(version, serverinfo, serverinfo_length,
NULL)) {
ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_SERVERINFO_DATA);
return 0;
}
if (ctx->cert->key == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
return 0;
}
new_serverinfo = OPENSSL_realloc(ctx->cert->key->serverinfo,
serverinfo_length);
if (new_serverinfo == NULL)
return 0;
ctx->cert->key->serverinfo = new_serverinfo;
memcpy(ctx->cert->key->serverinfo, serverinfo, serverinfo_length);
ctx->cert->key->serverinfo_length = serverinfo_length;
/*
* Now that the serverinfo is validated and stored, go ahead and
* register callbacks.
*/
if (!serverinfo_process_buffer(version, serverinfo, serverinfo_length,
ctx)) {
ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_SERVERINFO_DATA);
return 0;
}
return 1;
}
int SSL_CTX_use_serverinfo(SSL_CTX *ctx, const unsigned char *serverinfo,
size_t serverinfo_length)
{
return SSL_CTX_use_serverinfo_ex(ctx, SSL_SERVERINFOV1, serverinfo,
serverinfo_length);
}
int SSL_CTX_use_serverinfo_file(SSL_CTX *ctx, const char *file)
{
unsigned char *serverinfo = NULL;
unsigned char *tmp;
size_t serverinfo_length = 0;
unsigned char *extension = 0;
long extension_length = 0;
char *name = NULL;
char *header = NULL;
unsigned int name_len;
int ret = 0;
BIO *bin = NULL;
size_t num_extensions = 0;
if (ctx == NULL || file == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
goto end;
}
bin = BIO_new(BIO_s_file());
if (bin == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(bin, file) <= 0) {
ERR_raise(ERR_LIB_SSL, ERR_R_SYS_LIB);
goto end;
}
for (num_extensions = 0;; num_extensions++) {
unsigned int version;
size_t append_length;
if (PEM_read_bio(bin, &name, &header, &extension, &extension_length)
== 0) {
/*
* There must be at least one extension in this file
*/
if (num_extensions == 0) {
ERR_raise(ERR_LIB_SSL, SSL_R_NO_PEM_EXTENSIONS);
goto end;
} else /* End of file, we're done */
break;
}
/* Check that PEM name starts with "BEGIN SERVERINFO FOR " */
name_len = strlen(name);
if (name_len < sizeof(NAME_PREFIX1) - 1) {
ERR_raise(ERR_LIB_SSL, SSL_R_PEM_NAME_TOO_SHORT);
goto end;
}
if (HAS_PREFIX(name, NAME_PREFIX1)) {
version = SSL_SERVERINFOV1;
} else {
if (name_len < sizeof(NAME_PREFIX2) - 1) {
ERR_raise(ERR_LIB_SSL, SSL_R_PEM_NAME_TOO_SHORT);
goto end;
}
if (!HAS_PREFIX(name, NAME_PREFIX2)) {
ERR_raise(ERR_LIB_SSL, SSL_R_PEM_NAME_BAD_PREFIX);
goto end;
}
version = SSL_SERVERINFOV2;
}
/*
* Check that the decoded PEM data is plausible (valid length field)
*/
if (version == SSL_SERVERINFOV1) {
/* 4 byte header: 2 bytes type, 2 bytes len */
if (extension_length < 4
|| (extension[2] << 8) + extension[3]
!= extension_length - 4) {
ERR_raise(ERR_LIB_SSL, SSL_R_BAD_DATA);
goto end;
}
} else {
/* 8 byte header: 4 bytes context, 2 bytes type, 2 bytes len */
if (extension_length < 8
|| (extension[6] << 8) + extension[7]
!= extension_length - 8) {
ERR_raise(ERR_LIB_SSL, SSL_R_BAD_DATA);
goto end;
}
}
/* Append the decoded extension to the serverinfo buffer */
append_length = extension_append_length(version, extension_length);
tmp = OPENSSL_realloc(serverinfo, serverinfo_length + append_length);
if (tmp == NULL)
goto end;
serverinfo = tmp;
extension_append(version, extension, extension_length,
serverinfo + serverinfo_length);
serverinfo_length += append_length;
OPENSSL_free(name);
name = NULL;
OPENSSL_free(header);
header = NULL;
OPENSSL_free(extension);
extension = NULL;
}
ret = SSL_CTX_use_serverinfo_ex(ctx, SSL_SERVERINFOV2, serverinfo,
serverinfo_length);
end:
/* SSL_CTX_use_serverinfo makes a local copy of the serverinfo. */
OPENSSL_free(name);
OPENSSL_free(header);
OPENSSL_free(extension);
OPENSSL_free(serverinfo);
BIO_free(bin);
return ret;
}
static int ssl_set_cert_and_key(SSL *ssl, SSL_CTX *ctx, X509 *x509, EVP_PKEY *privatekey,
STACK_OF(X509) *chain, int override)
{
int ret = 0;
size_t i;
int j;
int rv;
CERT *c;
STACK_OF(X509) *dup_chain = NULL;
EVP_PKEY *pubkey = NULL;
SSL_CONNECTION *sc = NULL;
if (ctx == NULL &&
(sc = SSL_CONNECTION_FROM_SSL(ssl)) == NULL)
return 0;
c = sc != NULL ? sc->cert : ctx->cert;
/* Do all security checks before anything else */
rv = ssl_security_cert(sc, ctx, x509, 0, 1);
if (rv != 1) {
ERR_raise(ERR_LIB_SSL, rv);
goto out;
}
for (j = 0; j < sk_X509_num(chain); j++) {
rv = ssl_security_cert(sc, ctx, sk_X509_value(chain, j), 0, 0);
if (rv != 1) {
ERR_raise(ERR_LIB_SSL, rv);
goto out;
}
}
pubkey = X509_get_pubkey(x509); /* bumps reference */
if (pubkey == NULL)
goto out;
if (privatekey == NULL) {
privatekey = pubkey;
} else {
/* For RSA, which has no parameters, missing returns 0 */
if (EVP_PKEY_missing_parameters(privatekey)) {
if (EVP_PKEY_missing_parameters(pubkey)) {
/* nobody has parameters? - error */
ERR_raise(ERR_LIB_SSL, SSL_R_MISSING_PARAMETERS);
goto out;
} else {
/* copy to privatekey from pubkey */
if (!EVP_PKEY_copy_parameters(privatekey, pubkey)) {
ERR_raise(ERR_LIB_SSL, SSL_R_COPY_PARAMETERS_FAILED);
goto out;
}
}
} else if (EVP_PKEY_missing_parameters(pubkey)) {
/* copy to pubkey from privatekey */
if (!EVP_PKEY_copy_parameters(pubkey, privatekey)) {
ERR_raise(ERR_LIB_SSL, SSL_R_COPY_PARAMETERS_FAILED);
goto out;
}
} /* else both have parameters */
/* check that key <-> cert match */
if (EVP_PKEY_eq(pubkey, privatekey) != 1) {
ERR_raise(ERR_LIB_SSL, SSL_R_PRIVATE_KEY_MISMATCH);
goto out;
}
}
if (ssl_cert_lookup_by_pkey(pubkey, &i, ctx) == NULL) {
ERR_raise(ERR_LIB_SSL, SSL_R_UNKNOWN_CERTIFICATE_TYPE);
goto out;
}
if (!override && (c->pkeys[i].x509 != NULL
|| c->pkeys[i].privatekey != NULL
|| c->pkeys[i].chain != NULL)) {
/* No override, and something already there */
ERR_raise(ERR_LIB_SSL, SSL_R_NOT_REPLACING_CERTIFICATE);
goto out;
}
if (chain != NULL) {
dup_chain = X509_chain_up_ref(chain);
if (dup_chain == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
goto out;
}
}
OSSL_STACK_OF_X509_free(c->pkeys[i].chain);
c->pkeys[i].chain = dup_chain;
X509_free(c->pkeys[i].x509);
X509_up_ref(x509);
c->pkeys[i].x509 = x509;
EVP_PKEY_free(c->pkeys[i].privatekey);
EVP_PKEY_up_ref(privatekey);
c->pkeys[i].privatekey = privatekey;
c->key = &(c->pkeys[i]);
ret = 1;
out:
EVP_PKEY_free(pubkey);
return ret;
}
int SSL_use_cert_and_key(SSL *ssl, X509 *x509, EVP_PKEY *privatekey,
STACK_OF(X509) *chain, int override)
{
return ssl_set_cert_and_key(ssl, NULL, x509, privatekey, chain, override);
}
int SSL_CTX_use_cert_and_key(SSL_CTX *ctx, X509 *x509, EVP_PKEY *privatekey,
STACK_OF(X509) *chain, int override)
{
return ssl_set_cert_and_key(NULL, ctx, x509, privatekey, chain, override);
}
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