kike: add some OpenSSL information to debug log

1 files changed, 33 insertions, 0 deletions

diff --git a/kike.c b/kike.c
index d2766d7..108ef72 100644
--- a/kike.c
+++ b/kike.c
@@ -3445,6 +3445,36 @@ irc_ssl_verify_callback (int verify_ok, X509_STORE_CTX *ctx)
 	return 1;
 }
 
+static void
+irc_ssl_info_callback (const SSL *ssl, int where, int ret)
+{
+	// For debugging only; provides us with the most important information
+
+	struct str s;
+	str_init (&s);
+
+	if (where & SSL_CB_LOOP)
+		str_append_printf (&s, "loop (%s) ",
+			SSL_state_string_long (ssl));
+	if (where & SSL_CB_EXIT)
+		str_append_printf (&s, "exit (%d in %s) ", ret,
+			SSL_state_string_long (ssl));
+
+	if (where & SSL_CB_READ)   str_append (&s, "read ");
+	if (where & SSL_CB_WRITE)  str_append (&s, "write ");
+
+	if (where & SSL_CB_ALERT)
+		str_append_printf (&s, "alert (%s: %s) ",
+			SSL_alert_type_string_long (ret),
+			SSL_alert_desc_string_long (ret));
+
+	if (where & SSL_CB_HANDSHAKE_START)  str_append (&s, "handshake start ");
+	if (where & SSL_CB_HANDSHAKE_DONE)   str_append (&s, "handshake done ");
+
+	print_debug ("ssl <%p> %s", ssl, s.str);
+	str_free (&s);
+}
+
 static bool
 irc_initialize_ssl_ctx (struct server_context *ctx,
 	const char *cert_path, const char *key_path, struct error **e)
@@ -3462,6 +3492,9 @@ irc_initialize_ssl_ctx (struct server_context *ctx,
 		SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE, irc_ssl_verify_callback);
 	// XXX: maybe we should call SSL_CTX_set_options() for some workarounds
 
+	if (g_debug_mode)
+		SSL_CTX_set_info_callback (ctx->ssl_ctx, irc_ssl_info_callback);
+
 	const unsigned char session_id_context[SSL_MAX_SSL_SESSION_ID_LENGTH]
 		= PROGRAM_NAME;
 	(void) SSL_CTX_set_session_id_context (ctx->ssl_ctx,