Openssl 1.1.0h

2018-04-02 22:33:38 +09:00
commit 1fd4faa81c
2471 changed files with 719220 additions and 0 deletions
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+/*
+ * Copyright 2008-2016 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
+ */
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/bio.h>
+#include <openssl/err.h>
+
+#include <stdio.h>
+
+/* Experimental NDEF ASN1 BIO support routines */
+
+/*
+ * The usage is quite simple, initialize an ASN1 structure, get a BIO from it
+ * then any data written through the BIO will end up translated to
+ * appropriate format on the fly. The data is streamed out and does *not*
+ * need to be all held in memory at once. When the BIO is flushed the output
+ * is finalized and any signatures etc written out. The BIO is a 'proper'
+ * BIO and can handle non blocking I/O correctly. The usage is simple. The
+ * implementation is *not*...
+ */
+
+/* BIO support data stored in the ASN1 BIO ex_arg */
+
+typedef struct ndef_aux_st {
+    /* ASN1 structure this BIO refers to */
+    ASN1_VALUE *val;
+    const ASN1_ITEM *it;
+    /* Top of the BIO chain */
+    BIO *ndef_bio;
+    /* Output BIO */
+    BIO *out;
+    /* Boundary where content is inserted */
+    unsigned char **boundary;
+    /* DER buffer start */
+    unsigned char *derbuf;
+} NDEF_SUPPORT;
+
+static int ndef_prefix(BIO *b, unsigned char **pbuf, int *plen, void *parg);
+static int ndef_prefix_free(BIO *b, unsigned char **pbuf, int *plen,
+                            void *parg);
+static int ndef_suffix(BIO *b, unsigned char **pbuf, int *plen, void *parg);
+static int ndef_suffix_free(BIO *b, unsigned char **pbuf, int *plen,
+                            void *parg);
+
+BIO *BIO_new_NDEF(BIO *out, ASN1_VALUE *val, const ASN1_ITEM *it)
+{
+    NDEF_SUPPORT *ndef_aux = NULL;
+    BIO *asn_bio = NULL;
+    const ASN1_AUX *aux = it->funcs;
+    ASN1_STREAM_ARG sarg;
+
+    if (!aux || !aux->asn1_cb) {
+        ASN1err(ASN1_F_BIO_NEW_NDEF, ASN1_R_STREAMING_NOT_SUPPORTED);
+        return NULL;
+    }
+    ndef_aux = OPENSSL_zalloc(sizeof(*ndef_aux));
+    asn_bio = BIO_new(BIO_f_asn1());
+    if (ndef_aux == NULL || asn_bio == NULL)
+        goto err;
+
+    /* ASN1 bio needs to be next to output BIO */
+    out = BIO_push(asn_bio, out);
+    if (out == NULL)
+        goto err;
+
+    BIO_asn1_set_prefix(asn_bio, ndef_prefix, ndef_prefix_free);
+    BIO_asn1_set_suffix(asn_bio, ndef_suffix, ndef_suffix_free);
+
+    /*
+     * Now let callback prepends any digest, cipher etc BIOs ASN1 structure
+     * needs.
+     */
+
+    sarg.out = out;
+    sarg.ndef_bio = NULL;
+    sarg.boundary = NULL;
+
+    if (aux->asn1_cb(ASN1_OP_STREAM_PRE, &val, it, &sarg) <= 0)
+        goto err;
+
+    ndef_aux->val = val;
+    ndef_aux->it = it;
+    ndef_aux->ndef_bio = sarg.ndef_bio;
+    ndef_aux->boundary = sarg.boundary;
+    ndef_aux->out = out;
+
+    BIO_ctrl(asn_bio, BIO_C_SET_EX_ARG, 0, ndef_aux);
+
+    return sarg.ndef_bio;
+
+ err:
+    BIO_free(asn_bio);
+    OPENSSL_free(ndef_aux);
+    return NULL;
+}
+
+static int ndef_prefix(BIO *b, unsigned char **pbuf, int *plen, void *parg)
+{
+    NDEF_SUPPORT *ndef_aux;
+    unsigned char *p;
+    int derlen;
+
+    if (!parg)
+        return 0;
+
+    ndef_aux = *(NDEF_SUPPORT **)parg;
+
+    derlen = ASN1_item_ndef_i2d(ndef_aux->val, NULL, ndef_aux->it);
+    p = OPENSSL_malloc(derlen);
+    if (p == NULL)
+        return 0;
+
+    ndef_aux->derbuf = p;
+    *pbuf = p;
+    derlen = ASN1_item_ndef_i2d(ndef_aux->val, &p, ndef_aux->it);
+
+    if (!*ndef_aux->boundary)
+        return 0;
+
+    *plen = *ndef_aux->boundary - *pbuf;
+
+    return 1;
+}
+
+static int ndef_prefix_free(BIO *b, unsigned char **pbuf, int *plen,
+                            void *parg)
+{
+    NDEF_SUPPORT *ndef_aux;
+
+    if (!parg)
+        return 0;
+
+    ndef_aux = *(NDEF_SUPPORT **)parg;
+
+    OPENSSL_free(ndef_aux->derbuf);
+
+    ndef_aux->derbuf = NULL;
+    *pbuf = NULL;
+    *plen = 0;
+    return 1;
+}
+
+static int ndef_suffix_free(BIO *b, unsigned char **pbuf, int *plen,
+                            void *parg)
+{
+    NDEF_SUPPORT **pndef_aux = (NDEF_SUPPORT **)parg;
+    if (!ndef_prefix_free(b, pbuf, plen, parg))
+        return 0;
+    OPENSSL_free(*pndef_aux);
+    *pndef_aux = NULL;
+    return 1;
+}
+
+static int ndef_suffix(BIO *b, unsigned char **pbuf, int *plen, void *parg)
+{
+    NDEF_SUPPORT *ndef_aux;
+    unsigned char *p;
+    int derlen;
+    const ASN1_AUX *aux;
+    ASN1_STREAM_ARG sarg;
+
+    if (!parg)
+        return 0;
+
+    ndef_aux = *(NDEF_SUPPORT **)parg;
+
+    aux = ndef_aux->it->funcs;
+
+    /* Finalize structures */
+    sarg.ndef_bio = ndef_aux->ndef_bio;
+    sarg.out = ndef_aux->out;
+    sarg.boundary = ndef_aux->boundary;
+    if (aux->asn1_cb(ASN1_OP_STREAM_POST,
+                     &ndef_aux->val, ndef_aux->it, &sarg) <= 0)
+        return 0;
+
+    derlen = ASN1_item_ndef_i2d(ndef_aux->val, NULL, ndef_aux->it);
+    p = OPENSSL_malloc(derlen);
+    if (p == NULL)
+        return 0;
+
+    ndef_aux->derbuf = p;
+    *pbuf = p;
+    derlen = ASN1_item_ndef_i2d(ndef_aux->val, &p, ndef_aux->it);
+
+    if (!*ndef_aux->boundary)
+        return 0;
+    *pbuf = *ndef_aux->boundary;
+    *plen = derlen - (*ndef_aux->boundary - ndef_aux->derbuf);
+
+    return 1;
+}