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authorJeremy Harris <jgh146exb@wizmail.org>2018-12-30 22:51:18 +0000
committerJeremy Harris <jgh146exb@wizmail.org>2018-12-30 22:51:18 +0000
commit3c1f3b85aa4139ba062268ca958bab0dd0d64140 (patch)
tree9de99a26ee250257293ff5b7c6dbac7c54bfa074 /src
parent190404d75c168ce1e6dbf6ee08bdbbf62b365e4b (diff)
OpenSSL: Debug output TLS 1.3 keying
Diffstat (limited to 'src')
-rw-r--r--src/src/tls-openssl.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/src/src/tls-openssl.c b/src/src/tls-openssl.c
index 8f888824f..692022063 100644
--- a/src/src/tls-openssl.c
+++ b/src/src/tls-openssl.c
@@ -91,6 +91,12 @@ change this guard and punt the issue for a while longer. */
# endif
#endif
+#ifndef LIBRESSL_VERSION_NUMBER
+# if OPENSSL_VERSION_NUMBER >= 0x010101000L
+# define OPENSSL_HAVE_KEYLOG_CB
+# endif
+#endif
+
#if !defined(EXIM_HAVE_OPENSSL_TLSEXT) && !defined(DISABLE_OCSP)
# warning "OpenSSL library version too old; define DISABLE_OCSP in Makefile"
# define DISABLE_OCSP
@@ -774,6 +780,12 @@ DEBUG(D_tls)
}
}
+static void
+keylog_callback(const SSL *ssl, const char *line)
+{
+DEBUG(D_tls) debug_printf("%.200s\n", line);
+}
+
/*************************************************
@@ -1768,6 +1780,9 @@ if (!RAND_status())
level. */
DEBUG(D_tls) SSL_CTX_set_info_callback(ctx, (void (*)())info_callback);
+#ifdef OPENSSL_HAVE_KEYLOG_CB
+DEBUG(D_tls) SSL_CTX_set_keylog_callback(ctx, (void (*)())keylog_callback);
+#endif
/* Automatically re-try reads/writes after renegotiation. */
(void) SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);