Openssl 1.1.0h

2018-04-02 22:33:38 +09:00
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+/*
+ * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (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
+ */
+
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "ssl_locl.h"
+#include "internal/asn1t.h"
+#include <openssl/x509.h>
+
+typedef struct {
+    uint32_t version;
+    int32_t ssl_version;
+    ASN1_OCTET_STRING *cipher;
+    ASN1_OCTET_STRING *comp_id;
+    ASN1_OCTET_STRING *master_key;
+    ASN1_OCTET_STRING *session_id;
+    ASN1_OCTET_STRING *key_arg;
+    int64_t time;
+    int64_t timeout;
+    X509 *peer;
+    ASN1_OCTET_STRING *session_id_context;
+    int32_t verify_result;
+    ASN1_OCTET_STRING *tlsext_hostname;
+    int64_t tlsext_tick_lifetime_hint;
+    ASN1_OCTET_STRING *tlsext_tick;
+#ifndef OPENSSL_NO_PSK
+    ASN1_OCTET_STRING *psk_identity_hint;
+    ASN1_OCTET_STRING *psk_identity;
+#endif
+#ifndef OPENSSL_NO_SRP
+    ASN1_OCTET_STRING *srp_username;
+#endif
+    uint64_t flags;
+} SSL_SESSION_ASN1;
+
+ASN1_SEQUENCE(SSL_SESSION_ASN1) = {
+    ASN1_EMBED(SSL_SESSION_ASN1, version, UINT32),
+    ASN1_EMBED(SSL_SESSION_ASN1, ssl_version, INT32),
+    ASN1_SIMPLE(SSL_SESSION_ASN1, cipher, ASN1_OCTET_STRING),
+    ASN1_SIMPLE(SSL_SESSION_ASN1, session_id, ASN1_OCTET_STRING),
+    ASN1_SIMPLE(SSL_SESSION_ASN1, master_key, ASN1_OCTET_STRING),
+    ASN1_IMP_OPT(SSL_SESSION_ASN1, key_arg, ASN1_OCTET_STRING, 0),
+    ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, time, ZINT64, 1),
+    ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, timeout, ZINT64, 2),
+    ASN1_EXP_OPT(SSL_SESSION_ASN1, peer, X509, 3),
+    ASN1_EXP_OPT(SSL_SESSION_ASN1, session_id_context, ASN1_OCTET_STRING, 4),
+    ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, verify_result, ZINT32, 5),
+    ASN1_EXP_OPT(SSL_SESSION_ASN1, tlsext_hostname, ASN1_OCTET_STRING, 6),
+#ifndef OPENSSL_NO_PSK
+    ASN1_EXP_OPT(SSL_SESSION_ASN1, psk_identity_hint, ASN1_OCTET_STRING, 7),
+    ASN1_EXP_OPT(SSL_SESSION_ASN1, psk_identity, ASN1_OCTET_STRING, 8),
+#endif
+    ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, tlsext_tick_lifetime_hint, ZUINT64, 9),
+    ASN1_EXP_OPT(SSL_SESSION_ASN1, tlsext_tick, ASN1_OCTET_STRING, 10),
+    ASN1_EXP_OPT(SSL_SESSION_ASN1, comp_id, ASN1_OCTET_STRING, 11),
+#ifndef OPENSSL_NO_SRP
+    ASN1_EXP_OPT(SSL_SESSION_ASN1, srp_username, ASN1_OCTET_STRING, 12),
+#endif
+    ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, flags, ZUINT64, 13)
+} static_ASN1_SEQUENCE_END(SSL_SESSION_ASN1)
+
+IMPLEMENT_STATIC_ASN1_ENCODE_FUNCTIONS(SSL_SESSION_ASN1)
+
+/* Utility functions for i2d_SSL_SESSION */
+
+/* Initialise OCTET STRING from buffer and length */
+
+static void ssl_session_oinit(ASN1_OCTET_STRING **dest, ASN1_OCTET_STRING *os,
+                              unsigned char *data, size_t len)
+{
+    os->data = data;
+    os->length = len;
+    os->flags = 0;
+    *dest = os;
+}
+
+/* Initialise OCTET STRING from string */
+static void ssl_session_sinit(ASN1_OCTET_STRING **dest, ASN1_OCTET_STRING *os,
+                              char *data)
+{
+    if (data != NULL)
+        ssl_session_oinit(dest, os, (unsigned char *)data, strlen(data));
+    else
+        *dest = NULL;
+}
+
+int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
+{
+
+    SSL_SESSION_ASN1 as;
+
+    ASN1_OCTET_STRING cipher;
+    unsigned char cipher_data[2];
+    ASN1_OCTET_STRING master_key, session_id, sid_ctx;
+
+#ifndef OPENSSL_NO_COMP
+    ASN1_OCTET_STRING comp_id;
+    unsigned char comp_id_data;
+#endif
+
+    ASN1_OCTET_STRING tlsext_hostname, tlsext_tick;
+
+#ifndef OPENSSL_NO_SRP
+    ASN1_OCTET_STRING srp_username;
+#endif
+
+#ifndef OPENSSL_NO_PSK
+    ASN1_OCTET_STRING psk_identity, psk_identity_hint;
+#endif
+
+    long l;
+
+    if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0)))
+        return 0;
+
+    memset(&as, 0, sizeof(as));
+
+    as.version = SSL_SESSION_ASN1_VERSION;
+    as.ssl_version = in->ssl_version;
+
+    if (in->cipher == NULL)
+        l = in->cipher_id;
+    else
+        l = in->cipher->id;
+    cipher_data[0] = ((unsigned char)(l >> 8L)) & 0xff;
+    cipher_data[1] = ((unsigned char)(l)) & 0xff;
+
+    ssl_session_oinit(&as.cipher, &cipher, cipher_data, 2);
+
+#ifndef OPENSSL_NO_COMP
+    if (in->compress_meth) {
+        comp_id_data = (unsigned char)in->compress_meth;
+        ssl_session_oinit(&as.comp_id, &comp_id, &comp_id_data, 1);
+    }
+#endif
+
+    ssl_session_oinit(&as.master_key, &master_key,
+                      in->master_key, in->master_key_length);
+
+    ssl_session_oinit(&as.session_id, &session_id,
+                      in->session_id, in->session_id_length);
+
+    ssl_session_oinit(&as.session_id_context, &sid_ctx,
+                      in->sid_ctx, in->sid_ctx_length);
+
+    as.time = in->time;
+    as.timeout = in->timeout;
+    as.verify_result = in->verify_result;
+
+    as.peer = in->peer;
+
+    ssl_session_sinit(&as.tlsext_hostname, &tlsext_hostname,
+                      in->tlsext_hostname);
+    if (in->tlsext_tick) {
+        ssl_session_oinit(&as.tlsext_tick, &tlsext_tick,
+                          in->tlsext_tick, in->tlsext_ticklen);
+    }
+    if (in->tlsext_tick_lifetime_hint > 0)
+        as.tlsext_tick_lifetime_hint = in->tlsext_tick_lifetime_hint;
+#ifndef OPENSSL_NO_PSK
+    ssl_session_sinit(&as.psk_identity_hint, &psk_identity_hint,
+                      in->psk_identity_hint);
+    ssl_session_sinit(&as.psk_identity, &psk_identity, in->psk_identity);
+#endif                          /* OPENSSL_NO_PSK */
+#ifndef OPENSSL_NO_SRP
+    ssl_session_sinit(&as.srp_username, &srp_username, in->srp_username);
+#endif                          /* OPENSSL_NO_SRP */
+
+    as.flags = in->flags;
+
+    return i2d_SSL_SESSION_ASN1(&as, pp);
+
+}
+
+/* Utility functions for d2i_SSL_SESSION */
+
+/* OPENSSL_strndup an OCTET STRING */
+
+static int ssl_session_strndup(char **pdst, ASN1_OCTET_STRING *src)
+{
+    OPENSSL_free(*pdst);
+    *pdst = NULL;
+    if (src == NULL)
+        return 1;
+    *pdst = OPENSSL_strndup((char *)src->data, src->length);
+    if (*pdst == NULL)
+        return 0;
+    return 1;
+}
+
+/* Copy an OCTET STRING, return error if it exceeds maximum length */
+
+static int ssl_session_memcpy(unsigned char *dst, unsigned int *pdstlen,
+                              ASN1_OCTET_STRING *src, int maxlen)
+{
+    if (src == NULL) {
+        *pdstlen = 0;
+        return 1;
+    }
+    if (src->length > maxlen)
+        return 0;
+    memcpy(dst, src->data, src->length);
+    *pdstlen = src->length;
+    return 1;
+}
+
+SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
+                             long length)
+{
+    long id;
+    unsigned int tmpl;
+    const unsigned char *p = *pp;
+    SSL_SESSION_ASN1 *as = NULL;
+    SSL_SESSION *ret = NULL;
+
+    as = d2i_SSL_SESSION_ASN1(NULL, &p, length);
+    /* ASN.1 code returns suitable error */
+    if (as == NULL)
+        goto err;
+
+    if (!a || !*a) {
+        ret = SSL_SESSION_new();
+        if (ret == NULL)
+            goto err;
+    } else {
+        ret = *a;
+    }
+
+    if (as->version != SSL_SESSION_ASN1_VERSION) {
+        SSLerr(SSL_F_D2I_SSL_SESSION, SSL_R_UNKNOWN_SSL_VERSION);
+        goto err;
+    }
+
+    if ((as->ssl_version >> 8) != SSL3_VERSION_MAJOR
+        && (as->ssl_version >> 8) != DTLS1_VERSION_MAJOR
+        && as->ssl_version != DTLS1_BAD_VER) {
+        SSLerr(SSL_F_D2I_SSL_SESSION, SSL_R_UNSUPPORTED_SSL_VERSION);
+        goto err;
+    }
+
+    ret->ssl_version = (int)as->ssl_version;
+
+    if (as->cipher->length != 2) {
+        SSLerr(SSL_F_D2I_SSL_SESSION, SSL_R_CIPHER_CODE_WRONG_LENGTH);
+        goto err;
+    }
+
+    id = 0x03000000L | ((unsigned long)as->cipher->data[0] << 8L)
+                     | (unsigned long)as->cipher->data[1];
+
+    ret->cipher = NULL;
+    ret->cipher_id = id;
+
+    if (!ssl_session_memcpy(ret->session_id, &ret->session_id_length,
+                            as->session_id, SSL3_MAX_SSL_SESSION_ID_LENGTH))
+        goto err;
+
+    if (!ssl_session_memcpy(ret->master_key, &tmpl,
+                            as->master_key, SSL_MAX_MASTER_KEY_LENGTH))
+        goto err;
+
+    ret->master_key_length = tmpl;
+
+    if (as->time != 0)
+        ret->time = as->time;
+    else
+        ret->time = (unsigned long)time(NULL);
+
+    if (as->timeout != 0)
+        ret->timeout = as->timeout;
+    else
+        ret->timeout = 3;
+
+    X509_free(ret->peer);
+    ret->peer = as->peer;
+    as->peer = NULL;
+
+    if (!ssl_session_memcpy(ret->sid_ctx, &ret->sid_ctx_length,
+                            as->session_id_context, SSL_MAX_SID_CTX_LENGTH))
+        goto err;
+
+    /* NB: this defaults to zero which is X509_V_OK */
+    ret->verify_result = as->verify_result;
+
+    if (!ssl_session_strndup(&ret->tlsext_hostname, as->tlsext_hostname))
+        goto err;
+
+#ifndef OPENSSL_NO_PSK
+    if (!ssl_session_strndup(&ret->psk_identity_hint, as->psk_identity_hint))
+        goto err;
+    if (!ssl_session_strndup(&ret->psk_identity, as->psk_identity))
+        goto err;
+#endif
+
+    ret->tlsext_tick_lifetime_hint = as->tlsext_tick_lifetime_hint;
+    if (as->tlsext_tick) {
+        ret->tlsext_tick = as->tlsext_tick->data;
+        ret->tlsext_ticklen = as->tlsext_tick->length;
+        as->tlsext_tick->data = NULL;
+    } else {
+        ret->tlsext_tick = NULL;
+    }
+#ifndef OPENSSL_NO_COMP
+    if (as->comp_id) {
+        if (as->comp_id->length != 1) {
+            SSLerr(SSL_F_D2I_SSL_SESSION, SSL_R_BAD_LENGTH);
+            goto err;
+        }
+        ret->compress_meth = as->comp_id->data[0];
+    } else {
+        ret->compress_meth = 0;
+    }
+#endif
+
+#ifndef OPENSSL_NO_SRP
+    if (!ssl_session_strndup(&ret->srp_username, as->srp_username))
+        goto err;
+#endif                          /* OPENSSL_NO_SRP */
+    /* Flags defaults to zero which is fine */
+    ret->flags = as->flags;
+
+    M_ASN1_free_of(as, SSL_SESSION_ASN1);
+
+    if ((a != NULL) && (*a == NULL))
+        *a = ret;
+    *pp = p;
+    return ret;
+
+ err:
+    M_ASN1_free_of(as, SSL_SESSION_ASN1);
+    if ((a == NULL) || (*a != ret))
+        SSL_SESSION_free(ret);
+    return NULL;
+}