no warnings in random with openssl-1.1 and minor refactor

include/libtorrent/aux_/session_impl.hpp

@@ -357,7 +357,7 @@ namespace libtorrent
 			void dht_announce(sha1_hash const& info_hash, int port = 0, int flags = 0);
 
 			void dht_direct_request(udp::endpoint ep, entry& e
-				, void* userdata = 0);
+				, void* userdata = nullptr);
 
 #ifndef TORRENT_NO_DEPRECATE
 			entry dht_state() const;

include/libtorrent/kademlia/rpc_manager.hpp

@@ -47,8 +47,6 @@ POSSIBILITY OF SUCH DAMAGE.
 
 #include "libtorrent/time.hpp"
 
-namespace libtorrent { namespace aux { struct session_impl; } }
-
 namespace libtorrent { struct dht_settings; class entry; }
 
 namespace libtorrent { namespace dht

include/libtorrent/session_handle.hpp

@@ -422,7 +422,7 @@ namespace libtorrent
 		// the DHT works, it is natural to always do a lookup before storing and
 		// calling the callback in between is convenient.
 		void dht_put_item(std::array<char, 32> key
-			, std::function<void(entry&, std::array<char,64>&
+			, std::function<void(entry&, std::array<char, 64>&
 				, std::uint64_t&, std::string const&)> cb
 			, std::string salt = std::string());
 
@@ -435,7 +435,7 @@ namespace libtorrent
 		// with the response (if any) and the userdata pointer passed in here.
 		// Since this alert is a response to an explicit call, it will always be
 		// posted, regardless of the alert mask.
-		void dht_direct_request(udp::endpoint ep, entry const& e, void* userdata = 0);
+		void dht_direct_request(udp::endpoint ep, entry const& e, void* userdata = nullptr);
 
 #ifndef TORRENT_NO_DEPRECATE
 		// deprecated in 0.15

src/kademlia/node.cpp

@@ -197,7 +197,7 @@ std::string node::generate_token(udp::endpoint const& addr
 	h.update(info_hash);
 
 	sha1_hash const hash = h.final();
-	std::copy(hash.begin(), hash.begin() + 4, reinterpret_cast<char*>(&token[0]));
+	std::copy(hash.begin(), hash.begin() + 4, token.begin());
 	TORRENT_ASSERT(std::equal(token.begin(), token.end(), hash.data()));
 	return token;
 }
@@ -866,11 +866,11 @@ void node::incoming_request(msg const& m, entry& e)
 			return;
 		}
 
-		reply["token"] = generate_token(m.addr, sha1_hash(msg_keys[0].string_ptr()));
+		sha1_hash const info_hash(msg_keys[0].string_ptr());
+		reply["token"] = generate_token(m.addr, info_hash);
 
 		m_counters.inc_stats_counter(counters::dht_get_peers_in);
 
-		sha1_hash info_hash(msg_keys[0].string_ptr());
 		// always return nodes as well as peers
 		write_nodes_entries(info_hash, msg_keys[3], reply);
 

src/kademlia/rpc_manager.cpp

@@ -510,4 +510,3 @@ observer::~observer()
 }
 
 } } // namespace libtorrent::dht
-

src/random.cpp

@@ -34,6 +34,8 @@ POSSIBILITY OF SUCH DAMAGE.
 #include "libtorrent/random.hpp"
 #include "libtorrent/error_code.hpp"
 
+#include "libtorrent/aux_/disable_warnings_push.hpp"
+
 #if TORRENT_USE_CRYPTOAPI
 #include <windows.h>
 #include <wincrypt.h>
@@ -46,6 +48,8 @@ extern "C" {
 
 #endif
 
+#include "libtorrent/aux_/disable_warnings_pop.hpp"
+
 namespace libtorrent
 {
 	namespace aux

src/session_impl.cpp

@@ -567,7 +567,7 @@ namespace aux {
 #endif
 
 #ifndef TORRENT_DISABLE_EXTENSIONS
-		for (auto& ext : m_ses_extensions[plugins_all_idx])
+		for (auto const& ext : m_ses_extensions[plugins_all_idx])
 		{
 			TORRENT_TRY {
 				ext->save_state(*eptr);
@@ -6589,7 +6589,7 @@ namespace aux {
 		, dht::msg const& request, entry& response)
 	{
 #ifndef TORRENT_DISABLE_EXTENSIONS
-		for (auto& ext : m_ses_extensions[plugins_dht_request_idx])
+		for (auto const& ext : m_ses_extensions[plugins_dht_request_idx])
 		{
 			if (ext->on_dht_request(query
 				, request.addr, request.message, response))
@@ -6875,7 +6875,7 @@ namespace aux {
 			i != resp.peers.end(); ++i)
 			{
 				debug_log("  %16s %5d %s %s", i->hostname.c_str(), i->port
-					, i->pid.is_all_zeros()?"":to_hex(i->pid).c_str()
+					, i->pid.is_all_zeros() ? "" : to_hex(i->pid).c_str()
 					, identify_client(i->pid).c_str());
 			}
 			for (std::vector<ipv4_peer_entry>::const_iterator i = resp.peers4.begin();