Merge remote-tracking branch 'origin/main' into experimental-bots-pr

1 files changed, 104 insertions, 0 deletions

diff --git a/include/internal/dane.h b/include/internal/dane.h
new file mode 100644
index 00000000..a3d78a7f
--- /dev/null
+++ b/include/internal/dane.h
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2015-2021 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
+ */
+
+#ifndef OSSL_INTERNAL_DANE_H
+#define OSSL_INTERNAL_DANE_H
+# pragma once
+
+# include <openssl/safestack.h>
+
+/*-
+ * Certificate usages:
+ * https://tools.ietf.org/html/rfc6698#section-2.1.1
+ */
+#define DANETLS_USAGE_PKIX_TA   0
+#define DANETLS_USAGE_PKIX_EE   1
+#define DANETLS_USAGE_DANE_TA   2
+#define DANETLS_USAGE_DANE_EE   3
+#define DANETLS_USAGE_LAST      DANETLS_USAGE_DANE_EE
+
+/*-
+ * Selectors:
+ * https://tools.ietf.org/html/rfc6698#section-2.1.2
+ */
+#define DANETLS_SELECTOR_CERT   0
+#define DANETLS_SELECTOR_SPKI   1
+#define DANETLS_SELECTOR_LAST   DANETLS_SELECTOR_SPKI
+
+/*-
+ * Matching types:
+ * https://tools.ietf.org/html/rfc6698#section-2.1.3
+ */
+#define DANETLS_MATCHING_FULL   0
+#define DANETLS_MATCHING_2256   1
+#define DANETLS_MATCHING_2512   2
+#define DANETLS_MATCHING_LAST   DANETLS_MATCHING_2512
+
+typedef struct danetls_record_st {
+    uint8_t usage;
+    uint8_t selector;
+    uint8_t mtype;
+    unsigned char *data;
+    size_t dlen;
+    EVP_PKEY *spki;
+} danetls_record;
+
+DEFINE_STACK_OF(danetls_record)
+
+/*
+ * Shared DANE context
+ */
+struct dane_ctx_st {
+    const EVP_MD  **mdevp;      /* mtype -> digest */
+    uint8_t        *mdord;      /* mtype -> preference */
+    uint8_t         mdmax;      /* highest supported mtype */
+    unsigned long   flags;      /* feature bitmask */
+};
+
+/*
+ * Per connection DANE state
+ */
+struct ssl_dane_st {
+    struct dane_ctx_st *dctx;
+    STACK_OF(danetls_record) *trecs;
+    STACK_OF(X509) *certs;      /* DANE-TA(2) Cert(0) Full(0) certs */
+    danetls_record *mtlsa;      /* Matching TLSA record */
+    X509           *mcert;      /* DANE matched cert */
+    uint32_t        umask;      /* Usages present */
+    int             mdpth;      /* Depth of matched cert */
+    int             pdpth;      /* Depth of PKIX trust */
+    unsigned long   flags;      /* feature bitmask */
+};
+
+#define DANETLS_ENABLED(dane)  \
+    ((dane) != NULL && sk_danetls_record_num((dane)->trecs) > 0)
+
+#define DANETLS_USAGE_BIT(u)   (((uint32_t)1) << u)
+
+#define DANETLS_PKIX_TA_MASK (DANETLS_USAGE_BIT(DANETLS_USAGE_PKIX_TA))
+#define DANETLS_PKIX_EE_MASK (DANETLS_USAGE_BIT(DANETLS_USAGE_PKIX_EE))
+#define DANETLS_DANE_TA_MASK (DANETLS_USAGE_BIT(DANETLS_USAGE_DANE_TA))
+#define DANETLS_DANE_EE_MASK (DANETLS_USAGE_BIT(DANETLS_USAGE_DANE_EE))
+
+#define DANETLS_PKIX_MASK (DANETLS_PKIX_TA_MASK | DANETLS_PKIX_EE_MASK)
+#define DANETLS_DANE_MASK (DANETLS_DANE_TA_MASK | DANETLS_DANE_EE_MASK)
+#define DANETLS_TA_MASK (DANETLS_PKIX_TA_MASK | DANETLS_DANE_TA_MASK)
+#define DANETLS_EE_MASK (DANETLS_PKIX_EE_MASK | DANETLS_DANE_EE_MASK)
+
+#define DANETLS_HAS_PKIX(dane) ((dane) && ((dane)->umask & DANETLS_PKIX_MASK))
+#define DANETLS_HAS_DANE(dane) ((dane) && ((dane)->umask & DANETLS_DANE_MASK))
+#define DANETLS_HAS_TA(dane)   ((dane) && ((dane)->umask & DANETLS_TA_MASK))
+#define DANETLS_HAS_EE(dane)   ((dane) && ((dane)->umask & DANETLS_EE_MASK))
+
+#define DANETLS_HAS_PKIX_TA(dane) ((dane)&&((dane)->umask & DANETLS_PKIX_TA_MASK))
+#define DANETLS_HAS_PKIX_EE(dane) ((dane)&&((dane)->umask & DANETLS_PKIX_EE_MASK))
+#define DANETLS_HAS_DANE_TA(dane) ((dane)&&((dane)->umask & DANETLS_DANE_TA_MASK))
+#define DANETLS_HAS_DANE_EE(dane) ((dane)&&((dane)->umask & DANETLS_DANE_EE_MASK))
+
+#endif /* OSSL_INTERNAL_DANE_H */