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From a1968db524e087a36a19a351b89bf6f1633819aa Mon Sep 17 00:00:00 2001
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From: minfrin <minfrin@users.noreply.github.com>
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Date: Tue, 5 Jan 2021 23:17:14 +0000
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Subject: [PATCH] Add support for digests detected from ECC certificates
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Previously, the digest could be detected on RSA certificates only. This
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patch adds detection for ECC certificates.
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[ bvanassche: changed _htmap2 into a two-dimensional array and renamed _htmap2
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back to _htmap ]
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---
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snmplib/snmp_openssl.c | 60 +++++++++++++++++++++++++++++++++++-------
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1 file changed, 50 insertions(+), 10 deletions(-)
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diff --git a/snmplib/snmp_openssl.c b/snmplib/snmp_openssl.c
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index c092a007a..432cb5c27 100644
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--- a/snmplib/snmp_openssl.c
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+++ b/snmplib/snmp_openssl.c
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@@ -521,18 +521,54 @@ netsnmp_openssl_cert_dump_extensions(X509 *ocert)
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}
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}
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-static int _htmap[NS_HASH_MAX + 1] = {
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- 0, NID_md5WithRSAEncryption, NID_sha1WithRSAEncryption,
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- NID_sha224WithRSAEncryption, NID_sha256WithRSAEncryption,
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- NID_sha384WithRSAEncryption, NID_sha512WithRSAEncryption };
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+static const struct {
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+ uint16_t nid;
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+ uint16_t ht;
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+} _htmap[] = {
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+ { 0, NS_HASH_NONE },
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+#ifdef NID_md5WithRSAEncryption
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+ { NID_md5WithRSAEncryption, NS_HASH_MD5 },
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+#endif
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+#ifdef NID_sha1WithRSAEncryption
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+ { NID_sha1WithRSAEncryption, NS_HASH_SHA1 },
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+#endif
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+#ifdef NID_ecdsa_with_SHA1
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+ { NID_ecdsa_with_SHA1, NS_HASH_SHA1 },
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+#endif
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+#ifdef NID_sha224WithRSAEncryption
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+ { NID_sha224WithRSAEncryption, NS_HASH_SHA224 },
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+#endif
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+#ifdef NID_ecdsa_with_SHA224
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+ { NID_ecdsa_with_SHA224, NS_HASH_SHA224 },
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+#endif
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+#ifdef NID_sha256WithRSAEncryption
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+ { NID_sha256WithRSAEncryption, NS_HASH_SHA256 },
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+#endif
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+#ifdef NID_ecdsa_with_SHA256
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+ { NID_ecdsa_with_SHA256, NS_HASH_SHA256 },
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+#endif
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+#ifdef NID_sha384WithRSAEncryption
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+ { NID_sha384WithRSAEncryption, NS_HASH_SHA384 },
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+#endif
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+#ifdef NID_ecdsa_with_SHA384
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+ { NID_ecdsa_with_SHA384, NS_HASH_SHA384 },
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+#endif
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+#ifdef NID_sha512WithRSAEncryption
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+ { NID_sha512WithRSAEncryption, NS_HASH_SHA512 },
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+#endif
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+#ifdef NID_ecdsa_with_SHA512
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+ { NID_ecdsa_with_SHA512, NS_HASH_SHA512 },
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+#endif
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+};
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int
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_nid2ht(int nid)
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{
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int i;
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- for (i=1; i<= NS_HASH_MAX; ++i) {
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- if (nid == _htmap[i])
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- return i;
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+
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+ for (i = 0; i < sizeof(_htmap) / sizeof(_htmap[0]); i++) {
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+ if (_htmap[i].nid == nid)
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+ return _htmap[i].ht;
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}
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return 0;
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}
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@@ -541,9 +577,13 @@ _nid2ht(int nid)
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int
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_ht2nid(int ht)
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{
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- if ((ht < 0) || (ht > NS_HASH_MAX))
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- return 0;
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- return _htmap[ht];
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+ int i;
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+
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+ for (i = 0; i < sizeof(_htmap) / sizeof(_htmap[0]); i++) {
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+ if (_htmap[i].ht == ht)
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+ return _htmap[i].nid;
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+ }
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+ return 0;
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}
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#endif /* NETSNMP_FEATURE_REMOVE_OPENSSL_HT2NID */
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