transition merkle tree support over to the new read_resume_data()

include/libtorrent/add_torrent_params.hpp

@@ -468,6 +468,11 @@ namespace libtorrent
 		// precedence.
 		std::vector<boost::uint8_t> piece_priorities;
 
+		// if this is a merkle tree torrent, and you're seeding, this field must
+		// be set. It is all the hashes in the binary tree, with the root as the
+		// first entry. See torrent_info::set_merkle_tree() for more info.
+		std::vector<sha1_hash> merkle_tree;
+
 #ifndef TORRENT_NO_DEPRECATE
 		// The optional parameter, ``resume_data`` can be given if up to date
 		// fast-resume data is available. The fast-resume data can be acquired

src/read_resume_data.cpp

@@ -215,29 +215,9 @@ namespace libtorrent
 		bdecode_node mt = rd.dict_find_string("merkle tree");
 		if (mt)
 		{
-#error add field for this
-			std::vector<sha1_hash> tree;
-			tree.resize(m_torrent_file->merkle_tree().size());
-			std::memcpy(&tree[0], mt.string_ptr()
-				, (std::min)(mt.string_length(), int(tree.size()) * 20));
-			if (mt.string_length() < int(tree.size()) * 20)
-				std::memset(&tree[0] + mt.string_length() / 20, 0
-					, tree.size() - mt.string_length() / 20);
-			m_torrent_file->set_merkle_tree(tree);
-		}
-
-
-#error this is the case where the torrent is a merkle torrent but the resume \
-		data does not contain the merkle tree, we need some kind of check in the \
-		torrent constructor and error reporting
-		{
-			// TODO: 0 if this is a merkle torrent and we can't
-			// restore the tree, we need to wipe all the
-			// bits in the have array, but not necessarily
-			// we might want to do a full check to see if we have
-			// all the pieces. This is low priority since almost
-			// no one uses merkle torrents
-			TORRENT_ASSERT(false);
+			ret.merkle_tree.resize(mt.string_length() / 20);
+			std::memcpy(&ret.merkle_tree[0], mt.string_ptr()
+				, int(ret.merkle_tree.size()) * 20);
 		}
 
 		// some sanity checking. Maybe we shouldn't be in seed mode anymore

src/session_handle.cpp

@@ -237,6 +237,8 @@ namespace libtorrent
 			atp.verified_pieces.swap(resume_data.verified_pieces);
 			atp.piece_priorities.swap(resume_data.piece_priorities);
 
+			atp.merkle_tree.swap(resume_data.merkle_tree);
+
 			if ((atp.flags & add_torrent_params::flag_override_resume_data) == 0)
 			{
 				atp.download_limit = resume_data.download_limit;

src/torrent.cpp

@@ -283,6 +283,7 @@ namespace libtorrent
 		// being initialized, which happens after the constructor returns.
 
 		// TODO: 3 we could probably get away with just saving a few fields here
+		// TODO: 2 p should probably be moved in here
 		m_add_torrent_params.reset(new add_torrent_params(p));
 
 		if (m_pinned)
@@ -367,7 +368,6 @@ namespace libtorrent
 			e.source = announce_entry::source_magnet_link;
 			e.tier = tier;
 			m_trackers.push_back(e);
-			m_torrent_file->add_tracker(*i, tier);
 		}
 
 		std::sort(m_trackers.begin(), m_trackers.end(), boost::bind(&announce_entry::tier, _1)
@@ -376,6 +376,29 @@ namespace libtorrent
 		if (settings().get_bool(settings_pack::prefer_udp_trackers))
 			prioritize_udp_trackers();
 
+		// --- MERKLE TREE ---
+
+		if (m_torrent_file->is_valid()
+			&& m_torrent_file->is_merkle_torrent())
+		{
+			if (p.merkle_tree.size() == m_torrent_file->merkle_tree().size())
+			{
+				// TODO: 2 set_merkle_tree should probably take the vector as &&
+				std::vector<sha1_hash> tree(p.merkle_tree);
+				m_torrent_file->set_merkle_tree(tree);
+			}
+			else
+			{
+				// TODO: 0 if this is a merkle torrent and we can't
+				// restore the tree, we need to wipe all the
+				// bits in the have array, but not necessarily
+				// we might want to do a full check to see if we have
+				// all the pieces. This is low priority since almost
+				// no one uses merkle torrents
+				TORRENT_ASSERT(false);
+			}
+		}
+
 		if (m_torrent_file->is_valid())
 		{
 			m_seed_mode = (p.flags & add_torrent_params::flag_seed_mode) != 0;
@@ -398,9 +421,6 @@ namespace libtorrent
 			m_verifying.resize(m_torrent_file->num_pieces(), false);
 		}
 
-		if (settings().get_bool(settings_pack::prefer_udp_trackers))
-			prioritize_udp_trackers();
-
 		m_total_uploaded = p.total_uploaded;
 		m_total_downloaded = p.total_downloaded;